diff options
Diffstat (limited to 'drivers/staging/wavelan')
| -rw-r--r-- | drivers/staging/wavelan/Kconfig | 38 | ||||
| -rw-r--r-- | drivers/staging/wavelan/Makefile | 2 | ||||
| -rw-r--r-- | drivers/staging/wavelan/TODO | 7 | ||||
| -rw-r--r-- | drivers/staging/wavelan/i82586.h | 413 | ||||
| -rw-r--r-- | drivers/staging/wavelan/wavelan.c | 4383 | ||||
| -rw-r--r-- | drivers/staging/wavelan/wavelan.h | 370 | ||||
| -rw-r--r-- | drivers/staging/wavelan/wavelan.p.h | 696 | ||||
| -rw-r--r-- | drivers/staging/wavelan/wavelan_cs.c | 4610 | ||||
| -rw-r--r-- | drivers/staging/wavelan/wavelan_cs.h | 386 | ||||
| -rw-r--r-- | drivers/staging/wavelan/wavelan_cs.p.h | 766 |
10 files changed, 11671 insertions, 0 deletions
diff --git a/drivers/staging/wavelan/Kconfig b/drivers/staging/wavelan/Kconfig new file mode 100644 index 000000000000..af655668c2a7 --- /dev/null +++ b/drivers/staging/wavelan/Kconfig @@ -0,0 +1,38 @@ +config WAVELAN + tristate "AT&T/Lucent old WaveLAN & DEC RoamAbout DS ISA support" + depends on ISA && WLAN + select WIRELESS_EXT + select WEXT_SPY + select WEXT_PRIV + ---help--- + The Lucent WaveLAN (formerly NCR and AT&T; or DEC RoamAbout DS) is + a Radio LAN (wireless Ethernet-like Local Area Network) using the + radio frequencies 900 MHz and 2.4 GHz. + + If you want to use an ISA WaveLAN card under Linux, say Y and read + the Ethernet-HOWTO, available from + <http://www.tldp.org/docs.html#howto>. Some more specific + information is contained in + <file:Documentation/networking/wavelan.txt> and in the source code + <file:drivers/net/wireless/wavelan.p.h>. + + You will also need the wireless tools package available from + <http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Tools.html>. + Please read the man pages contained therein. + + To compile this driver as a module, choose M here: the module will be + called wavelan. + +config PCMCIA_WAVELAN + tristate "AT&T/Lucent old WaveLAN Pcmcia wireless support" + depends on PCMCIA && WLAN + select WIRELESS_EXT + select WEXT_SPY + select WEXT_PRIV + help + Say Y here if you intend to attach an AT&T/Lucent Wavelan PCMCIA + (PC-card) wireless Ethernet networking card to your computer. This + driver is for the non-IEEE-802.11 Wavelan cards. + + To compile this driver as a module, choose M here: the module will be + called wavelan_cs. If unsure, say N. diff --git a/drivers/staging/wavelan/Makefile b/drivers/staging/wavelan/Makefile new file mode 100644 index 000000000000..1cde17c69a43 --- /dev/null +++ b/drivers/staging/wavelan/Makefile @@ -0,0 +1,2 @@ +obj-$(CONFIG_WAVELAN) += wavelan.o +obj-$(CONFIG_PCMCIA_WAVELAN) += wavelan_cs.o diff --git a/drivers/staging/wavelan/TODO b/drivers/staging/wavelan/TODO new file mode 100644 index 000000000000..9bd15a2f6d9e --- /dev/null +++ b/drivers/staging/wavelan/TODO @@ -0,0 +1,7 @@ +TODO: + - step up and maintain this driver to ensure that it continues + to work. Having the hardware for this is pretty much a + requirement. If this does not happen, the will be removed in + the 2.6.35 kernel release. + +Please send patches to Greg Kroah-Hartman <greg@kroah.com>. diff --git a/drivers/staging/wavelan/i82586.h b/drivers/staging/wavelan/i82586.h new file mode 100644 index 000000000000..5f65b250646f --- /dev/null +++ b/drivers/staging/wavelan/i82586.h @@ -0,0 +1,413 @@ +/* + * Intel 82586 IEEE 802.3 Ethernet LAN Coprocessor. + * + * See: + * Intel Microcommunications 1991 + * p1-1 to p1-37 + * Intel order No. 231658 + * ISBN 1-55512-119-5 + * + * Unfortunately, the above chapter mentions neither + * the System Configuration Pointer (SCP) nor the + * Intermediate System Configuration Pointer (ISCP), + * so we probably need to look elsewhere for the + * whole story -- some recommend the "Intel LAN + * Components manual" but I have neither a copy + * nor a full reference. But "elsewhere" may be + * in the same publication... + * The description of a later device, the + * "82596CA High-Performance 32-Bit Local Area Network + * Coprocessor", (ibid. p1-38 to p1-109) does mention + * the SCP and ISCP and also has an i82586 compatibility + * mode. Even more useful is "AP-235 An 82586 Data Link + * Driver" (ibid. p1-337 to p1-417). + */ + +#define I82586_MEMZ (64 * 1024) + +#define I82586_SCP_ADDR (I82586_MEMZ - sizeof(scp_t)) + +#define ADDR_LEN 6 +#define I82586NULL 0xFFFF + +#define toff(t,p,f) (unsigned short)((void *)(&((t *)((void *)0 + (p)))->f) - (void *)0) + +/* + * System Configuration Pointer (SCP). + */ +typedef struct scp_t scp_t; +struct scp_t +{ + unsigned short scp_sysbus; /* 82586 bus width: */ +#define SCP_SY_16BBUS (0x0 << 0) /* 16 bits */ +#define SCP_SY_8BBUS (0x1 << 0) /* 8 bits. */ + unsigned short scp_junk[2]; /* Unused */ + unsigned short scp_iscpl; /* lower 16 bits of ISCP_ADDR */ + unsigned short scp_iscph; /* upper 16 bits of ISCP_ADDR */ +}; + +/* + * Intermediate System Configuration Pointer (ISCP). + */ +typedef struct iscp_t iscp_t; +struct iscp_t +{ + unsigned short iscp_busy; /* set by CPU before first CA, */ + /* cleared by 82586 after read. */ + unsigned short iscp_offset; /* offset of SCB */ + unsigned short iscp_basel; /* base of SCB */ + unsigned short iscp_baseh; /* " */ +}; + +/* + * System Control Block (SCB). + * The 82586 writes its status to scb_status and then + * raises an interrupt to alert the CPU. + * The CPU writes a command to scb_command and + * then issues a Channel Attention (CA) to alert the 82586. + */ +typedef struct scb_t scb_t; +struct scb_t +{ + unsigned short scb_status; /* Status of 82586 */ +#define SCB_ST_INT (0xF << 12) /* Some of: */ +#define SCB_ST_CX (0x1 << 15) /* Cmd completed */ +#define SCB_ST_FR (0x1 << 14) /* Frame received */ +#define SCB_ST_CNA (0x1 << 13) /* Cmd unit not active */ +#define SCB_ST_RNR (0x1 << 12) /* Rcv unit not ready */ +#define SCB_ST_JUNK0 (0x1 << 11) /* 0 */ +#define SCB_ST_CUS (0x7 << 8) /* Cmd unit status */ +#define SCB_ST_CUS_IDLE (0 << 8) /* Idle */ +#define SCB_ST_CUS_SUSP (1 << 8) /* Suspended */ +#define SCB_ST_CUS_ACTV (2 << 8) /* Active */ +#define SCB_ST_JUNK1 (0x1 << 7) /* 0 */ +#define SCB_ST_RUS (0x7 << 4) /* Rcv unit status */ +#define SCB_ST_RUS_IDLE (0 << 4) /* Idle */ +#define SCB_ST_RUS_SUSP (1 << 4) /* Suspended */ +#define SCB_ST_RUS_NRES (2 << 4) /* No resources */ +#define SCB_ST_RUS_RDY (4 << 4) /* Ready */ + unsigned short scb_command; /* Next command */ +#define SCB_CMD_ACK_CX (0x1 << 15) /* Ack cmd completion */ +#define SCB_CMD_ACK_FR (0x1 << 14) /* Ack frame received */ +#define SCB_CMD_ACK_CNA (0x1 << 13) /* Ack CU not active */ +#define SCB_CMD_ACK_RNR (0x1 << 12) /* Ack RU not ready */ +#define SCB_CMD_JUNKX (0x1 << 11) /* Unused */ +#define SCB_CMD_CUC (0x7 << 8) /* Command Unit command */ +#define SCB_CMD_CUC_NOP (0 << 8) /* Nop */ +#define SCB_CMD_CUC_GO (1 << 8) /* Start cbl_offset */ +#define SCB_CMD_CUC_RES (2 << 8) /* Resume execution */ +#define SCB_CMD_CUC_SUS (3 << 8) /* Suspend " */ +#define SCB_CMD_CUC_ABT (4 << 8) /* Abort " */ +#define SCB_CMD_RESET (0x1 << 7) /* Reset chip (hardware) */ +#define SCB_CMD_RUC (0x7 << 4) /* Receive Unit command */ +#define SCB_CMD_RUC_NOP (0 << 4) /* Nop */ +#define SCB_CMD_RUC_GO (1 << 4) /* Start rfa_offset */ +#define SCB_CMD_RUC_RES (2 << 4) /* Resume reception */ +#define SCB_CMD_RUC_SUS (3 << 4) /* Suspend " */ +#define SCB_CMD_RUC_ABT (4 << 4) /* Abort " */ + unsigned short scb_cbl_offset; /* Offset of first command unit */ + /* Action Command */ + unsigned short scb_rfa_offset; /* Offset of first Receive */ + /* Frame Descriptor in the */ + /* Receive Frame Area */ + unsigned short scb_crcerrs; /* Properly aligned frames */ + /* received with a CRC error */ + unsigned short scb_alnerrs; /* Misaligned frames received */ + /* with a CRC error */ + unsigned short scb_rscerrs; /* Frames lost due to no space */ + unsigned short scb_ovrnerrs; /* Frames lost due to slow bus */ +}; + +#define scboff(p,f) toff(scb_t, p, f) + +/* + * The eight Action Commands. + */ +typedef enum acmd_e acmd_e; +enum acmd_e +{ + acmd_nop = 0, /* Do nothing */ + acmd_ia_setup = 1, /* Load an (ethernet) address into the */ + /* 82586 */ + acmd_configure = 2, /* Update the 82586 operating parameters */ + acmd_mc_setup = 3, /* Load a list of (ethernet) multicast */ + /* addresses into the 82586 */ + acmd_transmit = 4, /* Transmit a frame */ + acmd_tdr = 5, /* Perform a Time Domain Reflectometer */ + /* test on the serial link */ + acmd_dump = 6, /* Copy 82586 registers to memory */ + acmd_diagnose = 7, /* Run an internal self test */ +}; + +/* + * Generic Action Command header. + */ +typedef struct ach_t ach_t; +struct ach_t +{ + unsigned short ac_status; /* Command status: */ +#define AC_SFLD_C (0x1 << 15) /* Command completed */ +#define AC_SFLD_B (0x1 << 14) /* Busy executing */ +#define AC_SFLD_OK (0x1 << 13) /* Completed error free */ +#define AC_SFLD_A (0x1 << 12) /* Command aborted */ +#define AC_SFLD_FAIL (0x1 << 11) /* Selftest failed */ +#define AC_SFLD_S10 (0x1 << 10) /* No carrier sense */ + /* during transmission */ +#define AC_SFLD_S9 (0x1 << 9) /* Tx unsuccessful: */ + /* (stopped) lost CTS */ +#define AC_SFLD_S8 (0x1 << 8) /* Tx unsuccessful: */ + /* (stopped) slow DMA */ +#define AC_SFLD_S7 (0x1 << 7) /* Tx deferred: */ + /* other link traffic */ +#define AC_SFLD_S6 (0x1 << 6) /* Heart Beat: collision */ + /* detect after last tx */ +#define AC_SFLD_S5 (0x1 << 5) /* Tx stopped: */ + /* excessive collisions */ +#define AC_SFLD_MAXCOL (0xF << 0) /* Collision count */ + unsigned short ac_command; /* Command specifier: */ +#define AC_CFLD_EL (0x1 << 15) /* End of command list */ +#define AC_CFLD_S (0x1 << 14) /* Suspend on completion */ +#define AC_CFLD_I (0x1 << 13) /* Interrupt on completion */ +#define AC_CFLD_CMD (0x7 << 0) /* acmd_e */ + unsigned short ac_link; /* Next Action Command */ +}; + +#define acoff(p,f) toff(ach_t, p, f) + +/* + * The Nop Action Command. + */ +typedef struct ac_nop_t ac_nop_t; +struct ac_nop_t +{ + ach_t nop_h; +}; + +/* + * The IA-Setup Action Command. + */ +typedef struct ac_ias_t ac_ias_t; +struct ac_ias_t +{ + ach_t ias_h; + unsigned char ias_addr[ADDR_LEN]; /* The (ethernet) address */ +}; + +/* + * The Configure Action Command. + */ +typedef struct ac_cfg_t ac_cfg_t; +struct ac_cfg_t +{ + ach_t cfg_h; + unsigned char cfg_byte_cnt; /* Size foll data: 4-12 */ +#define AC_CFG_BYTE_CNT(v) (((v) & 0xF) << 0) + unsigned char cfg_fifolim; /* FIFO threshold */ +#define AC_CFG_FIFOLIM(v) (((v) & 0xF) << 0) + unsigned char cfg_byte8; +#define AC_CFG_SAV_BF(v) (((v) & 0x1) << 7) /* Save rxd bad frames */ +#define AC_CFG_SRDY(v) (((v) & 0x1) << 6) /* SRDY/ARDY pin means */ + /* external sync. */ + unsigned char cfg_byte9; +#define AC_CFG_ELPBCK(v) (((v) & 0x1) << 7) /* External loopback */ +#define AC_CFG_ILPBCK(v) (((v) & 0x1) << 6) /* Internal loopback */ +#define AC_CFG_PRELEN(v) (((v) & 0x3) << 4) /* Preamble length */ +#define AC_CFG_PLEN_2 0 /* 2 bytes */ +#define AC_CFG_PLEN_4 1 /* 4 bytes */ +#define AC_CFG_PLEN_8 2 /* 8 bytes */ +#define AC_CFG_PLEN_16 3 /* 16 bytes */ +#define AC_CFG_ALOC(v) (((v) & 0x1) << 3) /* Addr/len data is */ + /* explicit in buffers */ +#define AC_CFG_ADDRLEN(v) (((v) & 0x7) << 0) /* Bytes per address */ + unsigned char cfg_byte10; +#define AC_CFG_BOFMET(v) (((v) & 0x1) << 7) /* Use alternate expo. */ + /* backoff method */ +#define AC_CFG_ACR(v) (((v) & 0x7) << 4) /* Accelerated cont. res. */ +#define AC_CFG_LINPRIO(v) (((v) & 0x7) << 0) /* Linear priority */ + unsigned char cfg_ifs; /* Interframe spacing */ + unsigned char cfg_slotl; /* Slot time (low byte) */ + unsigned char cfg_byte13; +#define AC_CFG_RETRYNUM(v) (((v) & 0xF) << 4) /* Max. collision retry */ +#define AC_CFG_SLTTMHI(v) (((v) & 0x7) << 0) /* Slot time (high bits) */ + unsigned char cfg_byte14; +#define AC_CFG_FLGPAD(v) (((v) & 0x1) << 7) /* Pad with HDLC flags */ +#define AC_CFG_BTSTF(v) (((v) & 0x1) << 6) /* Do HDLC bitstuffing */ +#define AC_CFG_CRC16(v) (((v) & 0x1) << 5) /* 16 bit CCITT CRC */ +#define AC_CFG_NCRC(v) (((v) & 0x1) << 4) /* Insert no CRC */ +#define AC_CFG_TNCRS(v) (((v) & 0x1) << 3) /* Tx even if no carrier */ +#define AC_CFG_MANCH(v) (((v) & 0x1) << 2) /* Manchester coding */ +#define AC_CFG_BCDIS(v) (((v) & 0x1) << 1) /* Disable broadcast */ +#define AC_CFG_PRM(v) (((v) & 0x1) << 0) /* Promiscuous mode */ + unsigned char cfg_byte15; +#define AC_CFG_ICDS(v) (((v) & 0x1) << 7) /* Internal collision */ + /* detect source */ +#define AC_CFG_CDTF(v) (((v) & 0x7) << 4) /* Collision detect */ + /* filter in bit times */ +#define AC_CFG_ICSS(v) (((v) & 0x1) << 3) /* Internal carrier */ + /* sense source */ +#define AC_CFG_CSTF(v) (((v) & 0x7) << 0) /* Carrier sense */ + /* filter in bit times */ + unsigned short cfg_min_frm_len; +#define AC_CFG_MNFRM(v) (((v) & 0xFF) << 0) /* Min. bytes/frame (<= 255) */ +}; + +/* + * The MC-Setup Action Command. + */ +typedef struct ac_mcs_t ac_mcs_t; +struct ac_mcs_t +{ + ach_t mcs_h; + unsigned short mcs_cnt; /* No. of bytes of MC addresses */ +#if 0 + unsigned char mcs_data[ADDR_LEN]; /* The first MC address .. */ + ... +#endif +}; + +#define I82586_MAX_MULTICAST_ADDRESSES 128 /* Hardware hashed filter */ + +/* + * The Transmit Action Command. + */ +typedef struct ac_tx_t ac_tx_t; +struct ac_tx_t +{ + ach_t tx_h; + unsigned short tx_tbd_offset; /* Address of list of buffers. */ +#if 0 +Linux packets are passed down with the destination MAC address +and length/type field already prepended to the data, +so we do not need to insert it. Consistent with this +we must also set the AC_CFG_ALOC(..) flag during the +ac_cfg_t action command. + unsigned char tx_addr[ADDR_LEN]; /* The frame dest. address */ + unsigned short tx_length; /* The frame length */ +#endif /* 0 */ +}; + +/* + * The Time Domain Reflectometer Action Command. + */ +typedef struct ac_tdr_t ac_tdr_t; +struct ac_tdr_t +{ + ach_t tdr_h; + unsigned short tdr_result; /* Result. */ +#define AC_TDR_LNK_OK (0x1 << 15) /* No link problem */ +#define AC_TDR_XCVR_PRB (0x1 << 14) /* Txcvr cable problem */ +#define AC_TDR_ET_OPN (0x1 << 13) /* Open on the link */ +#define AC_TDR_ET_SRT (0x1 << 12) /* Short on the link */ +#define AC_TDR_TIME (0x7FF << 0) /* Distance to problem */ + /* site in transmit */ + /* clock cycles */ +}; + +/* + * The Dump Action Command. + */ +typedef struct ac_dmp_t ac_dmp_t; +struct ac_dmp_t +{ + ach_t dmp_h; + unsigned short dmp_offset; /* Result. */ +}; + +/* + * Size of the result of the dump command. + */ +#define DUMPBYTES 170 + +/* + * The Diagnose Action Command. + */ +typedef struct ac_dgn_t ac_dgn_t; +struct ac_dgn_t +{ + ach_t dgn_h; +}; + +/* + * Transmit Buffer Descriptor (TBD). + */ +typedef struct tbd_t tbd_t; +struct tbd_t +{ + unsigned short tbd_status; /* Written by the CPU */ +#define TBD_STATUS_EOF (0x1 << 15) /* This TBD is the */ + /* last for this frame */ +#define TBD_STATUS_ACNT (0x3FFF << 0) /* Actual count of data */ + /* bytes in this buffer */ + unsigned short tbd_next_bd_offset; /* Next in list */ + unsigned short tbd_bufl; /* Buffer address (low) */ + unsigned short tbd_bufh; /* " " (high) */ +}; + +/* + * Receive Buffer Descriptor (RBD). + */ +typedef struct rbd_t rbd_t; +struct rbd_t +{ + unsigned short rbd_status; /* Written by the 82586 */ +#define RBD_STATUS_EOF (0x1 << 15) /* This RBD is the */ + /* last for this frame */ +#define RBD_STATUS_F (0x1 << 14) /* ACNT field is valid */ +#define RBD_STATUS_ACNT (0x3FFF << 0) /* Actual no. of data */ + /* bytes in this buffer */ + unsigned short rbd_next_rbd_offset; /* Next rbd in list */ + unsigned short rbd_bufl; /* Data pointer (low) */ + unsigned short rbd_bufh; /* " " (high) */ + unsigned short rbd_el_size; /* EL+Data buf. size */ +#define RBD_EL (0x1 << 15) /* This BD is the */ + /* last in the list */ +#define RBD_SIZE (0x3FFF << 0) /* No. of bytes the */ + /* buffer can hold */ +}; + +#define rbdoff(p,f) toff(rbd_t, p, f) + +/* + * Frame Descriptor (FD). + */ +typedef struct fd_t fd_t; +struct fd_t +{ + unsigned short fd_status; /* Written by the 82586 */ +#define FD_STATUS_C (0x1 << 15) /* Completed storing frame */ +#define FD_STATUS_B (0x1 << 14) /* FD was consumed by RU */ +#define FD_STATUS_OK (0x1 << 13) /* Frame rxd successfully */ +#define FD_STATUS_S11 (0x1 << 11) /* CRC error */ +#define FD_STATUS_S10 (0x1 << 10) /* Alignment error */ +#define FD_STATUS_S9 (0x1 << 9) /* Ran out of resources */ +#define FD_STATUS_S8 (0x1 << 8) /* Rx DMA overrun */ +#define FD_STATUS_S7 (0x1 << 7) /* Frame too short */ +#define FD_STATUS_S6 (0x1 << 6) /* No EOF flag */ + unsigned short fd_command; /* Command */ +#define FD_COMMAND_EL (0x1 << 15) /* Last FD in list */ +#define FD_COMMAND_S (0x1 << 14) /* Suspend RU after rx */ + unsigned short fd_link_offset; /* Next FD */ + unsigned short fd_rbd_offset; /* First RBD (data) */ + /* Prepared by CPU, */ + /* updated by 82586 */ +#if 0 +I think the rest is unused since we +have set AC_CFG_ALOC(..). However, just +in case, we leave the space. +#endif /* 0 */ + unsigned char fd_dest[ADDR_LEN]; /* Destination address */ + /* Written by 82586 */ + unsigned char fd_src[ADDR_LEN]; /* Source address */ + /* Written by 82586 */ + unsigned short fd_length; /* Frame length or type */ + /* Written by 82586 */ +}; + +#define fdoff(p,f) toff(fd_t, p, f) + +/* + * This software may only be used and distributed + * according to the terms of the GNU General Public License. + * + * For more details, see wavelan.c. + */ diff --git a/drivers/staging/wavelan/wavelan.c b/drivers/staging/wavelan/wavelan.c new file mode 100644 index 000000000000..d634b2da3b84 --- /dev/null +++ b/drivers/staging/wavelan/wavelan.c @@ -0,0 +1,4383 @@ +/* + * WaveLAN ISA driver + * + * Jean II - HPLB '96 + * + * Reorganisation and extension of the driver. + * Original copyright follows (also see the end of this file). + * See wavelan.p.h for details. + * + * + * + * AT&T GIS (nee NCR) WaveLAN card: + * An Ethernet-like radio transceiver + * controlled by an Intel 82586 coprocessor. + */ + +#include "wavelan.p.h" /* Private header */ + +/************************* MISC SUBROUTINES **************************/ +/* + * Subroutines which won't fit in one of the following category + * (WaveLAN modem or i82586) + */ + +/*------------------------------------------------------------------*/ +/* + * Translate irq number to PSA irq parameter + */ +static u8 wv_irq_to_psa(int irq) +{ + if (irq < 0 || irq >= ARRAY_SIZE(irqvals)) + return 0; + + return irqvals[irq]; +} + +/*------------------------------------------------------------------*/ +/* + * Translate PSA irq parameter to irq number + */ +static int __init wv_psa_to_irq(u8 irqval) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(irqvals); i++) + if (irqvals[i] == irqval) + return i; + + return -1; +} + +/********************* HOST ADAPTER SUBROUTINES *********************/ +/* + * Useful subroutines to manage the WaveLAN ISA interface + * + * One major difference with the PCMCIA hardware (except the port mapping) + * is that we have to keep the state of the Host Control Register + * because of the interrupt enable & bus size flags. + */ + +/*------------------------------------------------------------------*/ +/* + * Read from card's Host Adaptor Status Register. + */ +static inline u16 hasr_read(unsigned long ioaddr) +{ + return (inw(HASR(ioaddr))); +} /* hasr_read */ + +/*------------------------------------------------------------------*/ +/* + * Write to card's Host Adapter Command Register. + */ +static inline void hacr_write(unsigned long ioaddr, u16 hacr) +{ + outw(hacr, HACR(ioaddr)); +} /* hacr_write */ + +/*------------------------------------------------------------------*/ +/* + * Write to card's Host Adapter Command Register. Include a delay for + * those times when it is needed. + */ +static void hacr_write_slow(unsigned long ioaddr, u16 hacr) +{ + hacr_write(ioaddr, hacr); + /* delay might only be needed sometimes */ + mdelay(1); +} /* hacr_write_slow */ + +/*------------------------------------------------------------------*/ +/* + * Set the channel attention bit. + */ +static inline void set_chan_attn(unsigned long ioaddr, u16 hacr) +{ + hacr_write(ioaddr, hacr | HACR_CA); +} /* set_chan_attn */ + +/*------------------------------------------------------------------*/ +/* + * Reset, and then set host adaptor into default mode. + */ +static inline void wv_hacr_reset(unsigned long ioaddr) +{ + hacr_write_slow(ioaddr, HACR_RESET); + hacr_write(ioaddr, HACR_DEFAULT); +} /* wv_hacr_reset */ + +/*------------------------------------------------------------------*/ +/* + * Set the I/O transfer over the ISA bus to 8-bit mode + */ +static inline void wv_16_off(unsigned long ioaddr, u16 hacr) +{ + hacr &= ~HACR_16BITS; + hacr_write(ioaddr, hacr); +} /* wv_16_off */ + +/*------------------------------------------------------------------*/ +/* + * Set the I/O transfer over the ISA bus to 8-bit mode + */ +static inline void wv_16_on(unsigned long ioaddr, u16 hacr) +{ + hacr |= HACR_16BITS; + hacr_write(ioaddr, hacr); +} /* wv_16_on */ + +/*------------------------------------------------------------------*/ +/* + * Disable interrupts on the WaveLAN hardware. + * (called by wv_82586_stop()) + */ +static inline void wv_ints_off(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + + lp->hacr &= ~HACR_INTRON; + hacr_write(ioaddr, lp->hacr); +} /* wv_ints_off */ + +/*------------------------------------------------------------------*/ +/* + * Enable interrupts on the WaveLAN hardware. + * (called by wv_hw_reset()) + */ +static inline void wv_ints_on(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + + lp->hacr |= HACR_INTRON; + hacr_write(ioaddr, lp->hacr); +} /* wv_ints_on */ + +/******************* MODEM MANAGEMENT SUBROUTINES *******************/ +/* + * Useful subroutines to manage the modem of the WaveLAN + */ + +/*------------------------------------------------------------------*/ +/* + * Read the Parameter Storage Area from the WaveLAN card's memory + */ +/* + * Read bytes from the PSA. + */ +static void psa_read(unsigned long ioaddr, u16 hacr, int o, /* offset in PSA */ + u8 * b, /* buffer to fill */ + int n) +{ /* size to read */ + wv_16_off(ioaddr, hacr); + + while (n-- > 0) { + outw(o, PIOR2(ioaddr)); + o++; + *b++ = inb(PIOP2(ioaddr)); + } + + wv_16_on(ioaddr, hacr); +} /* psa_read */ + +/*------------------------------------------------------------------*/ +/* + * Write the Parameter Storage Area to the WaveLAN card's memory. + */ +static void psa_write(unsigned long ioaddr, u16 hacr, int o, /* Offset in PSA */ + u8 * b, /* Buffer in memory */ + int n) +{ /* Length of buffer */ + int count = 0; + + wv_16_off(ioaddr, hacr); + + while (n-- > 0) { + outw(o, PIOR2(ioaddr)); + o++; + + outb(*b, PIOP2(ioaddr)); + b++; + + /* Wait for the memory to finish its write cycle */ + count = 0; + while ((count++ < 100) && + (hasr_read(ioaddr) & HASR_PSA_BUSY)) mdelay(1); + } + + wv_16_on(ioaddr, hacr); +} /* psa_write */ + +#ifdef SET_PSA_CRC +/*------------------------------------------------------------------*/ +/* + * Calculate the PSA CRC + * Thanks to Valster, Nico <NVALSTER@wcnd.nl.lucent.com> for the code + * NOTE: By specifying a length including the CRC position the + * returned value should be zero. (i.e. a correct checksum in the PSA) + * + * The Windows drivers don't use the CRC, but the AP and the PtP tool + * depend on it. + */ +static u16 psa_crc(u8 * psa, /* The PSA */ + int size) +{ /* Number of short for CRC */ + int byte_cnt; /* Loop on the PSA */ + u16 crc_bytes = 0; /* Data in the PSA */ + int bit_cnt; /* Loop on the bits of the short */ + + for (byte_cnt = 0; byte_cnt < size; byte_cnt++) { + crc_bytes ^= psa[byte_cnt]; /* Its an xor */ + + for (bit_cnt = 1; bit_cnt < 9; bit_cnt++) { + if (crc_bytes & 0x0001) + crc_bytes = (crc_bytes >> 1) ^ 0xA001; + else + crc_bytes >>= 1; + } + } + + return crc_bytes; +} /* psa_crc */ +#endif /* SET_PSA_CRC */ + +/*------------------------------------------------------------------*/ +/* + * update the checksum field in the Wavelan's PSA + */ +static void update_psa_checksum(struct net_device * dev, unsigned long ioaddr, u16 hacr) +{ +#ifdef SET_PSA_CRC + psa_t psa; + u16 crc; + + /* read the parameter storage area */ + psa_read(ioaddr, hacr, 0, (unsigned char *) &psa, sizeof(psa)); + + /* update the checksum */ + crc = psa_crc((unsigned char *) &psa, + sizeof(psa) - sizeof(psa.psa_crc[0]) - + sizeof(psa.psa_crc[1]) + - sizeof(psa.psa_crc_status)); + + psa.psa_crc[0] = crc & 0xFF; + psa.psa_crc[1] = (crc & 0xFF00) >> 8; + + /* Write it ! */ + psa_write(ioaddr, hacr, (char *) &psa.psa_crc - (char *) &psa, + (unsigned char *) &psa.psa_crc, 2); + +#ifdef DEBUG_IOCTL_INFO + printk(KERN_DEBUG "%s: update_psa_checksum(): crc = 0x%02x%02x\n", + dev->name, psa.psa_crc[0], psa.psa_crc[1]); + + /* Check again (luxury !) */ + crc = psa_crc((unsigned char *) &psa, + sizeof(psa) - sizeof(psa.psa_crc_status)); + + if (crc != 0) + printk(KERN_WARNING + "%s: update_psa_checksum(): CRC does not agree with PSA data (even after recalculating)\n", + dev->name); +#endif /* DEBUG_IOCTL_INFO */ +#endif /* SET_PSA_CRC */ +} /* update_psa_checksum */ + +/*------------------------------------------------------------------*/ +/* + * Write 1 byte to the MMC. + */ +static void mmc_out(unsigned long ioaddr, u16 o, u8 d) +{ + int count = 0; + + /* Wait for MMC to go idle */ + while ((count++ < 100) && (inw(HASR(ioaddr)) & HASR_MMC_BUSY)) + udelay(10); + + outw((u16) (((u16) d << 8) | (o << 1) | 1), MMCR(ioaddr)); +} + +/*------------------------------------------------------------------*/ +/* + * Routine to write bytes to the Modem Management Controller. + * We start at the end because it is the way it should be! + */ +static void mmc_write(unsigned long ioaddr, u8 o, u8 * b, int n) +{ + o += n; + b += n; + + while (n-- > 0) + mmc_out(ioaddr, --o, *(--b)); +} /* mmc_write */ + +/*------------------------------------------------------------------*/ +/* + * Read a byte from the MMC. + * Optimised version for 1 byte, avoid using memory. + */ +static u8 mmc_in(unsigned long ioaddr, u16 o) +{ + int count = 0; + + while ((count++ < 100) && (inw(HASR(ioaddr)) & HASR_MMC_BUSY)) + udelay(10); + outw(o << 1, MMCR(ioaddr)); + + while ((count++ < 100) && (inw(HASR(ioaddr)) & HASR_MMC_BUSY)) + udelay(10); + return (u8) (inw(MMCR(ioaddr)) >> 8); +} + +/*------------------------------------------------------------------*/ +/* + * Routine to read bytes from the Modem Management Controller. + * The implementation is complicated by a lack of address lines, + * which prevents decoding of the low-order bit. + * (code has just been moved in the above function) + * We start at the end because it is the way it should be! + */ +static inline void mmc_read(unsigned long ioaddr, u8 o, u8 * b, int n) +{ + o += n; + b += n; + + while (n-- > 0) + *(--b) = mmc_in(ioaddr, --o); +} /* mmc_read */ + +/*------------------------------------------------------------------*/ +/* + * Get the type of encryption available. + */ +static inline int mmc_encr(unsigned long ioaddr) +{ /* I/O port of the card */ + int temp; + + temp = mmc_in(ioaddr, mmroff(0, mmr_des_avail)); + if ((temp != MMR_DES_AVAIL_DES) && (temp != MMR_DES_AVAIL_AES)) + return 0; + else + return temp; +} + +/*------------------------------------------------------------------*/ +/* + * Wait for the frequency EEPROM to complete a command. + * I hope this one will be optimally inlined. + */ +static inline void fee_wait(unsigned long ioaddr, /* I/O port of the card */ + int delay, /* Base delay to wait for */ + int number) +{ /* Number of time to wait */ + int count = 0; /* Wait only a limited time */ + + while ((count++ < number) && + (mmc_in(ioaddr, mmroff(0, mmr_fee_status)) & + MMR_FEE_STATUS_BUSY)) udelay(delay); +} + +/*------------------------------------------------------------------*/ +/* + * Read bytes from the Frequency EEPROM (frequency select cards). + */ +static void fee_read(unsigned long ioaddr, /* I/O port of the card */ + u16 o, /* destination offset */ + u16 * b, /* data buffer */ + int n) +{ /* number of registers */ + b += n; /* Position at the end of the area */ + + /* Write the address */ + mmc_out(ioaddr, mmwoff(0, mmw_fee_addr), o + n - 1); + + /* Loop on all buffer */ + while (n-- > 0) { + /* Write the read command */ + mmc_out(ioaddr, mmwoff(0, mmw_fee_ctrl), + MMW_FEE_CTRL_READ); + + /* Wait until EEPROM is ready (should be quick). */ + fee_wait(ioaddr, 10, 100); + + /* Read the value. */ + *--b = ((mmc_in(ioaddr, mmroff(0, mmr_fee_data_h)) << 8) | + mmc_in(ioaddr, mmroff(0, mmr_fee_data_l))); + } +} + + +/*------------------------------------------------------------------*/ +/* + * Write bytes from the Frequency EEPROM (frequency select cards). + * This is a bit complicated, because the frequency EEPROM has to + * be unprotected and the write enabled. + * Jean II + */ +static void fee_write(unsigned long ioaddr, /* I/O port of the card */ + u16 o, /* destination offset */ + u16 * b, /* data buffer */ + int n) +{ /* number of registers */ + b += n; /* Position at the end of the area. */ + +#ifdef EEPROM_IS_PROTECTED /* disabled */ +#ifdef DOESNT_SEEM_TO_WORK /* disabled */ + /* Ask to read the protected register */ + mmc_out(ioaddr, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_PRREAD); + + fee_wait(ioaddr, 10, 100); + + /* Read the protected register. */ + printk("Protected 2: %02X-%02X\n", + mmc_in(ioaddr, mmroff(0, mmr_fee_data_h)), + mmc_in(ioaddr, mmroff(0, mmr_fee_data_l))); +#endif /* DOESNT_SEEM_TO_WORK */ + + /* Enable protected register. */ + mmc_out(ioaddr, mmwoff(0, mmw_fee_addr), MMW_FEE_ADDR_EN); + mmc_out(ioaddr, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_PREN); + + fee_wait(ioaddr, 10, 100); + + /* Unprotect area. */ + mmc_out(ioaddr, mmwoff(0, mmw_fee_addr), o + n); + mmc_out(ioaddr, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_PRWRITE); +#ifdef DOESNT_SEEM_TO_WORK /* disabled */ + /* or use: */ + mmc_out(ioaddr, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_PRCLEAR); +#endif /* DOESNT_SEEM_TO_WORK */ + + fee_wait(ioaddr, 10, 100); +#endif /* EEPROM_IS_PROTECTED */ + + /* Write enable. */ + mmc_out(ioaddr, mmwoff(0, mmw_fee_addr), MMW_FEE_ADDR_EN); + mmc_out(ioaddr, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_WREN); + + fee_wait(ioaddr, 10, 100); + + /* Write the EEPROM address. */ + mmc_out(ioaddr, mmwoff(0, mmw_fee_addr), o + n - 1); + + /* Loop on all buffer */ + while (n-- > 0) { + /* Write the value. */ + mmc_out(ioaddr, mmwoff(0, mmw_fee_data_h), (*--b) >> 8); + mmc_out(ioaddr, mmwoff(0, mmw_fee_data_l), *b & 0xFF); + + /* Write the write command. */ + mmc_out(ioaddr, mmwoff(0, mmw_fee_ctrl), + MMW_FEE_CTRL_WRITE); + + /* WaveLAN documentation says to wait at least 10 ms for EEBUSY = 0 */ + mdelay(10); + fee_wait(ioaddr, 10, 100); + } + + /* Write disable. */ + mmc_out(ioaddr, mmwoff(0, mmw_fee_addr), MMW_FEE_ADDR_DS); + mmc_out(ioaddr, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_WDS); + + fee_wait(ioaddr, 10, 100); + +#ifdef EEPROM_IS_PROTECTED /* disabled */ + /* Reprotect EEPROM. */ + mmc_out(ioaddr, mmwoff(0, mmw_fee_addr), 0x00); + mmc_out(ioaddr, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_PRWRITE); + + fee_wait(ioaddr, 10, 100); +#endif /* EEPROM_IS_PROTECTED */ +} + +/************************ I82586 SUBROUTINES *************************/ +/* + * Useful subroutines to manage the Ethernet controller + */ + +/*------------------------------------------------------------------*/ +/* + * Read bytes from the on-board RAM. + * Why does inlining this function make it fail? + */ +static /*inline */ void obram_read(unsigned long ioaddr, + u16 o, u8 * b, int n) +{ + outw(o, PIOR1(ioaddr)); + insw(PIOP1(ioaddr), (unsigned short *) b, (n + 1) >> 1); +} + +/*------------------------------------------------------------------*/ +/* + * Write bytes to the on-board RAM. + */ +static inline void obram_write(unsigned long ioaddr, u16 o, u8 * b, int n) +{ + outw(o, PIOR1(ioaddr)); + outsw(PIOP1(ioaddr), (unsigned short *) b, (n + 1) >> 1); +} + +/*------------------------------------------------------------------*/ +/* + * Acknowledge the reading of the status issued by the i82586. + */ +static void wv_ack(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + u16 scb_cs; + int i; + + obram_read(ioaddr, scboff(OFFSET_SCB, scb_status), + (unsigned char *) &scb_cs, sizeof(scb_cs)); + scb_cs &= SCB_ST_INT; + + if (scb_cs == 0) + return; + + obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), + (unsigned char *) &scb_cs, sizeof(scb_cs)); + + set_chan_attn(ioaddr, lp->hacr); + + for (i = 1000; i > 0; i--) { + obram_read(ioaddr, scboff(OFFSET_SCB, scb_command), + (unsigned char *) &scb_cs, sizeof(scb_cs)); + if (scb_cs == 0) + break; + + udelay(10); + } + udelay(100); + +#ifdef DEBUG_CONFIG_ERROR + if (i <= 0) + printk(KERN_INFO + "%s: wv_ack(): board not accepting command.\n", + dev->name); +#endif +} + +/*------------------------------------------------------------------*/ +/* + * Set channel attention bit and busy wait until command has + * completed, then acknowledge completion of the command. + */ +static int wv_synchronous_cmd(struct net_device * dev, const char *str) +{ + net_local *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + u16 scb_cmd; + ach_t cb; + int i; + + scb_cmd = SCB_CMD_CUC & SCB_CMD_CUC_GO; + obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), + (unsigned char *) &scb_cmd, sizeof(scb_cmd)); + + set_chan_attn(ioaddr, lp->hacr); + + for (i = 1000; i > 0; i--) { + obram_read(ioaddr, OFFSET_CU, (unsigned char *) &cb, + sizeof(cb)); + if (cb.ac_status & AC_SFLD_C) + break; + + udelay(10); + } + udelay(100); + + if (i <= 0 || !(cb.ac_status & AC_SFLD_OK)) { +#ifdef DEBUG_CONFIG_ERROR + printk(KERN_INFO "%s: %s failed; status = 0x%x\n", + dev->name, str, cb.ac_status); +#endif +#ifdef DEBUG_I82586_SHOW + wv_scb_show(ioaddr); +#endif + return -1; + } + + /* Ack the status */ + wv_ack(dev); + + return 0; +} + +/*------------------------------------------------------------------*/ +/* + * Configuration commands completion interrupt. + * Check if done, and if OK. + */ +static int +wv_config_complete(struct net_device * dev, unsigned long ioaddr, net_local * lp) +{ + unsigned short mcs_addr; + unsigned short status; + int ret; + +#ifdef DEBUG_INTERRUPT_TRACE + printk(KERN_DEBUG "%s: ->wv_config_complete()\n", dev->name); +#endif + + mcs_addr = lp->tx_first_in_use + sizeof(ac_tx_t) + sizeof(ac_nop_t) + + sizeof(tbd_t) + sizeof(ac_cfg_t) + sizeof(ac_ias_t); + + /* Read the status of the last command (set mc list). */ + obram_read(ioaddr, acoff(mcs_addr, ac_status), + (unsigned char *) &status, sizeof(status)); + + /* If not completed -> exit */ + if ((status & AC_SFLD_C) == 0) + ret = 0; /* Not ready to be scrapped */ + else { +#ifdef DEBUG_CONFIG_ERROR + unsigned short cfg_addr; + unsigned short ias_addr; + + /* Check mc_config command */ + if ((status & AC_SFLD_OK) != AC_SFLD_OK) + printk(KERN_INFO + "%s: wv_config_complete(): set_multicast_address failed; status = 0x%x\n", + dev->name, status); + + /* check ia-config command */ + ias_addr = mcs_addr - sizeof(ac_ias_t); + obram_read(ioaddr, acoff(ias_addr, ac_status), + (unsigned char *) &status, sizeof(status)); + if ((status & AC_SFLD_OK) != AC_SFLD_OK) + printk(KERN_INFO + "%s: wv_config_complete(): set_MAC_address failed; status = 0x%x\n", + dev->name, status); + + /* Check config command. */ + cfg_addr = ias_addr - sizeof(ac_cfg_t); + obram_read(ioaddr, acoff(cfg_addr, ac_status), + (unsigned char *) &status, sizeof(status)); + if ((status & AC_SFLD_OK) != AC_SFLD_OK) + printk(KERN_INFO + "%s: wv_config_complete(): configure failed; status = 0x%x\n", + dev->name, status); +#endif /* DEBUG_CONFIG_ERROR */ + + ret = 1; /* Ready to be scrapped */ + } + +#ifdef DEBUG_INTERRUPT_TRACE + printk(KERN_DEBUG "%s: <-wv_config_complete() - %d\n", dev->name, + ret); +#endif + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Command completion interrupt. + * Reclaim as many freed tx buffers as we can. + * (called in wavelan_interrupt()). + * Note : the spinlock is already grabbed for us. + */ +static int wv_complete(struct net_device * dev, unsigned long ioaddr, net_local * lp) +{ + int nreaped = 0; + +#ifdef DEBUG_INTERRUPT_TRACE + printk(KERN_DEBUG "%s: ->wv_complete()\n", dev->name); +#endif + + /* Loop on all the transmit buffers */ + while (lp->tx_first_in_use != I82586NULL) { + unsigned short tx_status; + + /* Read the first transmit buffer */ + obram_read(ioaddr, acoff(lp->tx_first_in_use, ac_status), + (unsigned char *) &tx_status, + sizeof(tx_status)); + + /* If not completed -> exit */ + if ((tx_status & AC_SFLD_C) == 0) + break; + + /* Hack for reconfiguration */ + if (tx_status == 0xFFFF) + if (!wv_config_complete(dev, ioaddr, lp)) + break; /* Not completed */ + + /* We now remove this buffer */ + nreaped++; + --lp->tx_n_in_use; + +/* +if (lp->tx_n_in_use > 0) + printk("%c", "0123456789abcdefghijk"[lp->tx_n_in_use]); +*/ + + /* Was it the last one? */ + if (lp->tx_n_in_use <= 0) + lp->tx_first_in_use = I82586NULL; + else { + /* Next one in the chain */ + lp->tx_first_in_use += TXBLOCKZ; + if (lp->tx_first_in_use >= + OFFSET_CU + + NTXBLOCKS * TXBLOCKZ) lp->tx_first_in_use -= + NTXBLOCKS * TXBLOCKZ; + } + + /* Hack for reconfiguration */ + if (tx_status == 0xFFFF) + continue; + + /* Now, check status of the finished command */ + if (tx_status & AC_SFLD_OK) { + int ncollisions; + + dev->stats.tx_packets++; + ncollisions = tx_status & AC_SFLD_MAXCOL; + dev->stats.collisions += ncollisions; +#ifdef DEBUG_TX_INFO + if (ncollisions > 0) + printk(KERN_DEBUG + "%s: wv_complete(): tx completed after %d collisions.\n", + dev->name, ncollisions); +#endif + } else { + dev->stats.tx_errors++; + if (tx_status & AC_SFLD_S10) { + dev->stats.tx_carrier_errors++; +#ifdef DEBUG_TX_FAIL + printk(KERN_DEBUG + "%s: wv_complete(): tx error: no CS.\n", + dev->name); +#endif + } + if (tx_status & AC_SFLD_S9) { + dev->stats.tx_carrier_errors++; +#ifdef DEBUG_TX_FAIL + printk(KERN_DEBUG + "%s: wv_complete(): tx error: lost CTS.\n", + dev->name); +#endif + } + if (tx_status & AC_SFLD_S8) { + dev->stats.tx_fifo_errors++; +#ifdef DEBUG_TX_FAIL + printk(KERN_DEBUG + "%s: wv_complete(): tx error: slow DMA.\n", + dev->name); +#endif + } + if (tx_status & AC_SFLD_S6) { + dev->stats.tx_heartbeat_errors++; +#ifdef DEBUG_TX_FAIL + printk(KERN_DEBUG + "%s: wv_complete(): tx error: heart beat.\n", + dev->name); +#endif + } + if (tx_status & AC_SFLD_S5) { + dev->stats.tx_aborted_errors++; +#ifdef DEBUG_TX_FAIL + printk(KERN_DEBUG + "%s: wv_complete(): tx error: too many collisions.\n", + dev->name); +#endif + } + } + +#ifdef DEBUG_TX_INFO + printk(KERN_DEBUG + "%s: wv_complete(): tx completed, tx_status 0x%04x\n", + dev->name, tx_status); +#endif + } + +#ifdef DEBUG_INTERRUPT_INFO + if (nreaped > 1) + printk(KERN_DEBUG "%s: wv_complete(): reaped %d\n", + dev->name, nreaped); +#endif + + /* + * Inform upper layers. + */ + if (lp->tx_n_in_use < NTXBLOCKS - 1) { + netif_wake_queue(dev); + } +#ifdef DEBUG_INTERRUPT_TRACE + printk(KERN_DEBUG "%s: <-wv_complete()\n", dev->name); +#endif + return nreaped; +} + +/*------------------------------------------------------------------*/ +/* + * Reconfigure the i82586, or at least ask for it. + * Because wv_82586_config uses a transmission buffer, we must do it + * when we are sure that there is one left, so we do it now + * or in wavelan_packet_xmit() (I can't find any better place, + * wavelan_interrupt is not an option), so you may experience + * delays sometimes. + */ +static void wv_82586_reconfig(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + unsigned long flags; + + /* Arm the flag, will be cleard in wv_82586_config() */ + lp->reconfig_82586 = 1; + + /* Check if we can do it now ! */ + if((netif_running(dev)) && !(netif_queue_stopped(dev))) { + spin_lock_irqsave(&lp->spinlock, flags); + /* May fail */ + wv_82586_config(dev); + spin_unlock_irqrestore(&lp->spinlock, flags); + } + else { +#ifdef DEBUG_CONFIG_INFO + printk(KERN_DEBUG + "%s: wv_82586_reconfig(): delayed (state = %lX)\n", + dev->name, dev->state); +#endif + } +} + +/********************* DEBUG & INFO SUBROUTINES *********************/ +/* + * This routine is used in the code to show information for debugging. + * Most of the time, it dumps the contents of hardware structures. + */ + +#ifdef DEBUG_PSA_SHOW +/*------------------------------------------------------------------*/ +/* + * Print the formatted contents of the Parameter Storage Area. + */ +static void wv_psa_show(psa_t * p) +{ + printk(KERN_DEBUG "##### WaveLAN PSA contents: #####\n"); + printk(KERN_DEBUG "psa_io_base_addr_1: 0x%02X %02X %02X %02X\n", + p->psa_io_base_addr_1, + p->psa_io_base_addr_2, + p->psa_io_base_addr_3, p->psa_io_base_addr_4); + printk(KERN_DEBUG "psa_rem_boot_addr_1: 0x%02X %02X %02X\n", + p->psa_rem_boot_addr_1, + p->psa_rem_boot_addr_2, p->psa_rem_boot_addr_3); + printk(KERN_DEBUG "psa_holi_params: 0x%02x, ", p->psa_holi_params); + printk("psa_int_req_no: %d\n", p->psa_int_req_no); +#ifdef DEBUG_SHOW_UNUSED + printk(KERN_DEBUG "psa_unused0[]: %pM\n", p->psa_unused0); +#endif /* DEBUG_SHOW_UNUSED */ + printk(KERN_DEBUG "psa_univ_mac_addr[]: %pM\n", p->psa_univ_mac_addr); + printk(KERN_DEBUG "psa_local_mac_addr[]: %pM\n", p->psa_local_mac_addr); + printk(KERN_DEBUG "psa_univ_local_sel: %d, ", + p->psa_univ_local_sel); + printk("psa_comp_number: %d, ", p->psa_comp_number); + printk("psa_thr_pre_set: 0x%02x\n", p->psa_thr_pre_set); + printk(KERN_DEBUG "psa_feature_select/decay_prm: 0x%02x, ", + p->psa_feature_select); + printk("psa_subband/decay_update_prm: %d\n", p->psa_subband); + printk(KERN_DEBUG "psa_quality_thr: 0x%02x, ", p->psa_quality_thr); + printk("psa_mod_delay: 0x%02x\n", p->psa_mod_delay); + printk(KERN_DEBUG "psa_nwid: 0x%02x%02x, ", p->psa_nwid[0], + p->psa_nwid[1]); + printk("psa_nwid_select: %d\n", p->psa_nwid_select); + printk(KERN_DEBUG "psa_encryption_select: %d, ", + p->psa_encryption_select); + printk + ("psa_encryption_key[]: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", + p->psa_encryption_key[0], p->psa_encryption_key[1], + p->psa_encryption_key[2], p->psa_encryption_key[3], + p->psa_encryption_key[4], p->psa_encryption_key[5], + p->psa_encryption_key[6], p->psa_encryption_key[7]); + printk(KERN_DEBUG "psa_databus_width: %d\n", p->psa_databus_width); + printk(KERN_DEBUG "psa_call_code/auto_squelch: 0x%02x, ", + p->psa_call_code[0]); + printk + ("psa_call_code[]: %02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n", + p->psa_call_code[0], p->psa_call_code[1], p->psa_call_code[2], + p->psa_call_code[3], p->psa_call_code[4], p->psa_call_code[5], + p->psa_call_code[6], p->psa_call_code[7]); +#ifdef DEBUG_SHOW_UNUSED + printk(KERN_DEBUG "psa_reserved[]: %02X:%02X\n", + p->psa_reserved[0], + p->psa_reserved[1]); +#endif /* DEBUG_SHOW_UNUSED */ + printk(KERN_DEBUG "psa_conf_status: %d, ", p->psa_conf_status); + printk("psa_crc: 0x%02x%02x, ", p->psa_crc[0], p->psa_crc[1]); + printk("psa_crc_status: 0x%02x\n", p->psa_crc_status); +} /* wv_psa_show */ +#endif /* DEBUG_PSA_SHOW */ + +#ifdef DEBUG_MMC_SHOW +/*------------------------------------------------------------------*/ +/* + * Print the formatted status of the Modem Management Controller. + * This function needs to be completed. + */ +static void wv_mmc_show(struct net_device * dev) +{ + unsigned long ioaddr = dev->base_addr; + net_local *lp = netdev_priv(dev); + mmr_t m; + + /* Basic check */ + if (hasr_read(ioaddr) & HASR_NO_CLK) { + printk(KERN_WARNING + "%s: wv_mmc_show: modem not connected\n", + dev->name); + return; + } + + /* Read the mmc */ + mmc_out(ioaddr, mmwoff(0, mmw_freeze), 1); + mmc_read(ioaddr, 0, (u8 *) & m, sizeof(m)); + mmc_out(ioaddr, mmwoff(0, mmw_freeze), 0); + + /* Don't forget to update statistics */ + lp->wstats.discard.nwid += + (m.mmr_wrong_nwid_h << 8) | m.mmr_wrong_nwid_l; + + printk(KERN_DEBUG "##### WaveLAN modem status registers: #####\n"); +#ifdef DEBUG_SHOW_UNUSED + printk(KERN_DEBUG + "mmc_unused0[]: %02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n", + m.mmr_unused0[0], m.mmr_unused0[1], m.mmr_unused0[2], + m.mmr_unused0[3], m.mmr_unused0[4], m.mmr_unused0[5], + m.mmr_unused0[6], m.mmr_unused0[7]); +#endif /* DEBUG_SHOW_UNUSED */ + printk(KERN_DEBUG "Encryption algorithm: %02X - Status: %02X\n", + m.mmr_des_avail, m.mmr_des_status); +#ifdef DEBUG_SHOW_UNUSED + printk(KERN_DEBUG "mmc_unused1[]: %02X:%02X:%02X:%02X:%02X\n", + m.mmr_unused1[0], + m.mmr_unused1[1], + m.mmr_unused1[2], m.mmr_unused1[3], m.mmr_unused1[4]); +#endif /* DEBUG_SHOW_UNUSED */ + printk(KERN_DEBUG "dce_status: 0x%x [%s%s%s%s]\n", + m.mmr_dce_status, + (m. + mmr_dce_status & MMR_DCE_STATUS_RX_BUSY) ? + "energy detected," : "", + (m. + mmr_dce_status & MMR_DCE_STATUS_LOOPT_IND) ? + "loop test indicated," : "", + (m. + mmr_dce_status & MMR_DCE_STATUS_TX_BUSY) ? + "transmitter on," : "", + (m. + mmr_dce_status & MMR_DCE_STATUS_JBR_EXPIRED) ? + "jabber timer expired," : ""); + printk(KERN_DEBUG "Dsp ID: %02X\n", m.mmr_dsp_id); +#ifdef DEBUG_SHOW_UNUSED + printk(KERN_DEBUG "mmc_unused2[]: %02X:%02X\n", + m.mmr_unused2[0], m.mmr_unused2[1]); +#endif /* DEBUG_SHOW_UNUSED */ + printk(KERN_DEBUG "# correct_nwid: %d, # wrong_nwid: %d\n", + (m.mmr_correct_nwid_h << 8) | m.mmr_correct_nwid_l, + (m.mmr_wrong_nwid_h << 8) | m.mmr_wrong_nwid_l); + printk(KERN_DEBUG "thr_pre_set: 0x%x [current signal %s]\n", + m.mmr_thr_pre_set & MMR_THR_PRE_SET, + (m. + mmr_thr_pre_set & MMR_THR_PRE_SET_CUR) ? "above" : + "below"); + printk(KERN_DEBUG "signal_lvl: %d [%s], ", + m.mmr_signal_lvl & MMR_SIGNAL_LVL, + (m. + mmr_signal_lvl & MMR_SIGNAL_LVL_VALID) ? "new msg" : + "no new msg"); + printk("silence_lvl: %d [%s], ", + m.mmr_silence_lvl & MMR_SILENCE_LVL, + (m. + mmr_silence_lvl & MMR_SILENCE_LVL_VALID) ? "update done" : + "no new update"); + printk("sgnl_qual: 0x%x [%s]\n", m.mmr_sgnl_qual & MMR_SGNL_QUAL, + (m. + mmr_sgnl_qual & MMR_SGNL_QUAL_ANT) ? "Antenna 1" : + "Antenna 0"); +#ifdef DEBUG_SHOW_UNUSED + printk(KERN_DEBUG "netw_id_l: %x\n", m.mmr_netw_id_l); +#endif /* DEBUG_SHOW_UNUSED */ +} /* wv_mmc_show */ +#endif /* DEBUG_MMC_SHOW */ + +#ifdef DEBUG_I82586_SHOW +/*------------------------------------------------------------------*/ +/* + * Print the last block of the i82586 memory. + */ +static void wv_scb_show(unsigned long ioaddr) +{ + scb_t scb; + + obram_read(ioaddr, OFFSET_SCB, (unsigned char *) &scb, + sizeof(scb)); + + printk(KERN_DEBUG "##### WaveLAN system control block: #####\n"); + + printk(KERN_DEBUG "status: "); + printk("stat 0x%x[%s%s%s%s] ", + (scb. + scb_status & (SCB_ST_CX | SCB_ST_FR | SCB_ST_CNA | + SCB_ST_RNR)) >> 12, + (scb. + scb_status & SCB_ST_CX) ? "command completion interrupt," : + "", (scb.scb_status & SCB_ST_FR) ? "frame received," : "", + (scb. + scb_status & SCB_ST_CNA) ? "command unit not active," : "", + (scb. + scb_status & SCB_ST_RNR) ? "receiving unit not ready," : + ""); + printk("cus 0x%x[%s%s%s] ", (scb.scb_status & SCB_ST_CUS) >> 8, + ((scb.scb_status & SCB_ST_CUS) == + SCB_ST_CUS_IDLE) ? "idle" : "", + ((scb.scb_status & SCB_ST_CUS) == + SCB_ST_CUS_SUSP) ? "suspended" : "", + ((scb.scb_status & SCB_ST_CUS) == + SCB_ST_CUS_ACTV) ? "active" : ""); + printk("rus 0x%x[%s%s%s%s]\n", (scb.scb_status & SCB_ST_RUS) >> 4, + ((scb.scb_status & SCB_ST_RUS) == + SCB_ST_RUS_IDLE) ? "idle" : "", + ((scb.scb_status & SCB_ST_RUS) == + SCB_ST_RUS_SUSP) ? "suspended" : "", + ((scb.scb_status & SCB_ST_RUS) == + SCB_ST_RUS_NRES) ? "no resources" : "", + ((scb.scb_status & SCB_ST_RUS) == + SCB_ST_RUS_RDY) ? "ready" : ""); + + printk(KERN_DEBUG "command: "); + printk("ack 0x%x[%s%s%s%s] ", + (scb. + scb_command & (SCB_CMD_ACK_CX | SCB_CMD_ACK_FR | + SCB_CMD_ACK_CNA | SCB_CMD_ACK_RNR)) >> 12, + (scb. + scb_command & SCB_CMD_ACK_CX) ? "ack cmd completion," : "", + (scb. + scb_command & SCB_CMD_ACK_FR) ? "ack frame received," : "", + (scb. + scb_command & SCB_CMD_ACK_CNA) ? "ack CU not active," : "", + (scb. + scb_command & SCB_CMD_ACK_RNR) ? "ack RU not ready," : ""); + printk("cuc 0x%x[%s%s%s%s%s] ", + (scb.scb_command & SCB_CMD_CUC) >> 8, + ((scb.scb_command & SCB_CMD_CUC) == + SCB_CMD_CUC_NOP) ? "nop" : "", + ((scb.scb_command & SCB_CMD_CUC) == + SCB_CMD_CUC_GO) ? "start cbl_offset" : "", + ((scb.scb_command & SCB_CMD_CUC) == + SCB_CMD_CUC_RES) ? "resume execution" : "", + ((scb.scb_command & SCB_CMD_CUC) == + SCB_CMD_CUC_SUS) ? "suspend execution" : "", + ((scb.scb_command & SCB_CMD_CUC) == + SCB_CMD_CUC_ABT) ? "abort execution" : ""); + printk("ruc 0x%x[%s%s%s%s%s]\n", + (scb.scb_command & SCB_CMD_RUC) >> 4, + ((scb.scb_command & SCB_CMD_RUC) == + SCB_CMD_RUC_NOP) ? "nop" : "", + ((scb.scb_command & SCB_CMD_RUC) == + SCB_CMD_RUC_GO) ? "start rfa_offset" : "", + ((scb.scb_command & SCB_CMD_RUC) == + SCB_CMD_RUC_RES) ? "resume reception" : "", + ((scb.scb_command & SCB_CMD_RUC) == + SCB_CMD_RUC_SUS) ? "suspend reception" : "", + ((scb.scb_command & SCB_CMD_RUC) == + SCB_CMD_RUC_ABT) ? "abort reception" : ""); + + printk(KERN_DEBUG "cbl_offset 0x%x ", scb.scb_cbl_offset); + printk("rfa_offset 0x%x\n", scb.scb_rfa_offset); + + printk(KERN_DEBUG "crcerrs %d ", scb.scb_crcerrs); + printk("alnerrs %d ", scb.scb_alnerrs); + printk("rscerrs %d ", scb.scb_rscerrs); + printk("ovrnerrs %d\n", scb.scb_ovrnerrs); +} + +/*------------------------------------------------------------------*/ +/* + * Print the formatted status of the i82586's receive unit. + */ +static void wv_ru_show(struct net_device * dev) +{ + printk(KERN_DEBUG + "##### WaveLAN i82586 receiver unit status: #####\n"); + printk(KERN_DEBUG "ru:"); + /* + * Not implemented yet + */ + printk("\n"); +} /* wv_ru_show */ + +/*------------------------------------------------------------------*/ +/* + * Display info about one control block of the i82586 memory. + */ +static void wv_cu_show_one(struct net_device * dev, net_local * lp, int i, u16 p) +{ + unsigned long ioaddr; + ac_tx_t actx; + + ioaddr = dev->base_addr; + + printk("%d: 0x%x:", i, p); + + obram_read(ioaddr, p, (unsigned char *) &actx, sizeof(actx)); + printk(" status=0x%x,", actx.tx_h.ac_status); + printk(" command=0x%x,", actx.tx_h.ac_command); + + /* + { + tbd_t tbd; + + obram_read(ioaddr, actx.tx_tbd_offset, (unsigned char *)&tbd, sizeof(tbd)); + printk(" tbd_status=0x%x,", tbd.tbd_status); + } + */ + + printk("|"); +} + +/*------------------------------------------------------------------*/ +/* + * Print status of the command unit of the i82586. + */ +static void wv_cu_show(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + unsigned int i; + u16 p; + + printk(KERN_DEBUG + "##### WaveLAN i82586 command unit status: #####\n"); + + printk(KERN_DEBUG); + for (i = 0, p = lp->tx_first_in_use; i < NTXBLOCKS; i++) { + wv_cu_show_one(dev, lp, i, p); + + p += TXBLOCKZ; + if (p >= OFFSET_CU + NTXBLOCKS * TXBLOCKZ) + p -= NTXBLOCKS * TXBLOCKZ; + } + printk("\n"); +} +#endif /* DEBUG_I82586_SHOW */ + +#ifdef DEBUG_DEVICE_SHOW +/*------------------------------------------------------------------*/ +/* + * Print the formatted status of the WaveLAN PCMCIA device driver. + */ +static void wv_dev_show(struct net_device * dev) +{ + printk(KERN_DEBUG "dev:"); + printk(" state=%lX,", dev->state); + printk(" trans_start=%ld,", dev->trans_start); + printk(" flags=0x%x,", dev->flags); + printk("\n"); +} /* wv_dev_show */ + +/*------------------------------------------------------------------*/ +/* + * Print the formatted status of the WaveLAN PCMCIA device driver's + * private information. + */ +static void wv_local_show(struct net_device * dev) +{ + net_local *lp; + + lp = netdev_priv(dev); + + printk(KERN_DEBUG "local:"); + printk(" tx_n_in_use=%d,", lp->tx_n_in_use); + printk(" hacr=0x%x,", lp->hacr); + printk(" rx_head=0x%x,", lp->rx_head); + printk(" rx_last=0x%x,", lp->rx_last); + printk(" tx_first_free=0x%x,", lp->tx_first_free); + printk(" tx_first_in_use=0x%x,", lp->tx_first_in_use); + printk("\n"); +} /* wv_local_show */ +#endif /* DEBUG_DEVICE_SHOW */ + +#if defined(DEBUG_RX_INFO) || defined(DEBUG_TX_INFO) +/*------------------------------------------------------------------*/ +/* + * Dump packet header (and content if necessary) on the screen + */ +static inline void wv_packet_info(u8 * p, /* Packet to dump */ + int length, /* Length of the packet */ + char *msg1, /* Name of the device */ + char *msg2) +{ /* Name of the function */ + int i; + int maxi; + + printk(KERN_DEBUG + "%s: %s(): dest %pM, length %d\n", + msg1, msg2, p, length); + printk(KERN_DEBUG + "%s: %s(): src %pM, type 0x%02X%02X\n", + msg1, msg2, &p[6], p[12], p[13]); + +#ifdef DEBUG_PACKET_DUMP + + printk(KERN_DEBUG "data=\""); + + if ((maxi = length) > DEBUG_PACKET_DUMP) + maxi = DEBUG_PACKET_DUMP; + for (i = 14; i < maxi; i++) + if (p[i] >= ' ' && p[i] <= '~') + printk(" %c", p[i]); + else + printk("%02X", p[i]); + if (maxi < length) + printk(".."); + printk("\"\n"); + printk(KERN_DEBUG "\n"); +#endif /* DEBUG_PACKET_DUMP */ +} +#endif /* defined(DEBUG_RX_INFO) || defined(DEBUG_TX_INFO) */ + +/*------------------------------------------------------------------*/ +/* + * This is the information which is displayed by the driver at startup. + * There are lots of flags for configuring it to your liking. + */ +static void wv_init_info(struct net_device * dev) +{ + short ioaddr = dev->base_addr; + net_local *lp = netdev_priv(dev); + psa_t psa; + + /* Read the parameter storage area */ + psa_read(ioaddr, lp->hacr, 0, (unsigned char *) &psa, sizeof(psa)); + +#ifdef DEBUG_PSA_SHOW + wv_psa_show(&psa); +#endif +#ifdef DEBUG_MMC_SHOW + wv_mmc_show(dev); +#endif +#ifdef DEBUG_I82586_SHOW + wv_cu_show(dev); +#endif + +#ifdef DEBUG_BASIC_SHOW + /* Now, let's go for the basic stuff. */ + printk(KERN_NOTICE "%s: WaveLAN at %#x, %pM, IRQ %d", + dev->name, ioaddr, dev->dev_addr, dev->irq); + + /* Print current network ID. */ + if (psa.psa_nwid_select) + printk(", nwid 0x%02X-%02X", psa.psa_nwid[0], + psa.psa_nwid[1]); + else + printk(", nwid off"); + + /* If 2.00 card */ + if (!(mmc_in(ioaddr, mmroff(0, mmr_fee_status)) & + (MMR_FEE_STATUS_DWLD | MMR_FEE_STATUS_BUSY))) { + unsigned short freq; + + /* Ask the EEPROM to read the frequency from the first area. */ + fee_read(ioaddr, 0x00, &freq, 1); + + /* Print frequency */ + printk(", 2.00, %ld", (freq >> 6) + 2400L); + + /* Hack! */ + if (freq & 0x20) + printk(".5"); + } else { + printk(", PC"); + switch (psa.psa_comp_number) { + case PSA_COMP_PC_AT_915: + case PSA_COMP_PC_AT_2400: + printk("-AT"); + break; + case PSA_COMP_PC_MC_915: + case PSA_COMP_PC_MC_2400: + printk("-MC"); + break; + case PSA_COMP_PCMCIA_915: + printk("MCIA"); + break; + default: + printk("?"); + } + printk(", "); + switch (psa.psa_subband) { + case PSA_SUBBAND_915: + printk("915"); + break; + case PSA_SUBBAND_2425: + printk("2425"); + break; + case PSA_SUBBAND_2460: + printk("2460"); + break; + case PSA_SUBBAND_2484: + printk("2484"); + break; + case PSA_SUBBAND_2430_5: + printk("2430.5"); + break; + default: + printk("?"); + } + } + + printk(" MHz\n"); +#endif /* DEBUG_BASIC_SHOW */ + +#ifdef DEBUG_VERSION_SHOW + /* Print version information */ + printk(KERN_NOTICE "%s", version); +#endif +} /* wv_init_info */ + +/********************* IOCTL, STATS & RECONFIG *********************/ +/* + * We found here routines that are called by Linux on different + * occasions after the configuration and not for transmitting data + * These may be called when the user use ifconfig, /proc/net/dev + * or wireless extensions + */ + + +/*------------------------------------------------------------------*/ +/* + * Set or clear the multicast filter for this adaptor. + * num_addrs == -1 Promiscuous mode, receive all packets + * num_addrs == 0 Normal mode, clear multicast list + * num_addrs > 0 Multicast mode, receive normal and MC packets, + * and do best-effort filtering. + */ +static void wavelan_set_multicast_list(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + +#ifdef DEBUG_IOCTL_TRACE + printk(KERN_DEBUG "%s: ->wavelan_set_multicast_list()\n", + dev->name); +#endif + +#ifdef DEBUG_IOCTL_INFO + printk(KERN_DEBUG + "%s: wavelan_set_multicast_list(): setting Rx mode %02X to %d addresses.\n", + dev->name, dev->flags, dev->mc_count); +#endif + + /* Are we asking for promiscuous mode, + * or all multicast addresses (we don't have that!) + * or too many multicast addresses for the hardware filter? */ + if ((dev->flags & IFF_PROMISC) || + (dev->flags & IFF_ALLMULTI) || + (dev->mc_count > I82586_MAX_MULTICAST_ADDRESSES)) { + /* + * Enable promiscuous mode: receive all packets. + */ + if (!lp->promiscuous) { + lp->promiscuous = 1; + lp->mc_count = 0; + + wv_82586_reconfig(dev); + } + } else + /* Are there multicast addresses to send? */ + if (dev->mc_list != (struct dev_mc_list *) NULL) { + /* + * Disable promiscuous mode, but receive all packets + * in multicast list + */ +#ifdef MULTICAST_AVOID + if (lp->promiscuous || (dev->mc_count != lp->mc_count)) +#endif + { + lp->promiscuous = 0; + lp->mc_count = dev->mc_count; + + wv_82586_reconfig(dev); + } + } else { + /* + * Switch to normal mode: disable promiscuous mode and + * clear the multicast list. + */ + if (lp->promiscuous || lp->mc_count == 0) { + lp->promiscuous = 0; + lp->mc_count = 0; + + wv_82586_reconfig(dev); + } + } +#ifdef DEBUG_IOCTL_TRACE + printk(KERN_DEBUG "%s: <-wavelan_set_multicast_list()\n", + dev->name); +#endif +} + +/*------------------------------------------------------------------*/ +/* + * This function doesn't exist. + * (Note : it was a nice way to test the reconfigure stuff...) + */ +#ifdef SET_MAC_ADDRESS +static int wavelan_set_mac_address(struct net_device * dev, void *addr) +{ + struct sockaddr *mac = addr; + + /* Copy the address. */ + memcpy(dev->dev_addr, mac->sa_data, WAVELAN_ADDR_SIZE); + + /* Reconfigure the beast. */ + wv_82586_reconfig(dev); + + return 0; +} +#endif /* SET_MAC_ADDRESS */ + + +/*------------------------------------------------------------------*/ +/* + * Frequency setting (for hardware capable of it) + * It's a bit complicated and you don't really want to look into it. + * (called in wavelan_ioctl) + */ +static int wv_set_frequency(unsigned long ioaddr, /* I/O port of the card */ + iw_freq * frequency) +{ + const int BAND_NUM = 10; /* Number of bands */ + long freq = 0L; /* offset to 2.4 GHz in .5 MHz */ +#ifdef DEBUG_IOCTL_INFO + int i; +#endif + + /* Setting by frequency */ + /* Theoretically, you may set any frequency between + * the two limits with a 0.5 MHz precision. In practice, + * I don't want you to have trouble with local regulations. + */ + if ((frequency->e == 1) && + (frequency->m >= (int) 2.412e8) + && (frequency->m <= (int) 2.487e8)) { + freq = ((frequency->m / 10000) - 24000L) / 5; + } + + /* Setting by channel (same as wfreqsel) */ + /* Warning: each channel is 22 MHz wide, so some of the channels + * will interfere. */ + if ((frequency->e == 0) && (frequency->m < BAND_NUM)) { + /* Get frequency offset. */ + freq = channel_bands[frequency->m] >> 1; + } + + /* Verify that the frequency is allowed. */ + if (freq != 0L) { + u16 table[10]; /* Authorized frequency table */ + + /* Read the frequency table. */ + fee_read(ioaddr, 0x71, table, 10); + +#ifdef DEBUG_IOCTL_INFO + printk(KERN_DEBUG "Frequency table: "); + for (i = 0; i < 10; i++) { + printk(" %04X", table[i]); + } + printk("\n"); +#endif + + /* Look in the table to see whether the frequency is allowed. */ + if (!(table[9 - ((freq - 24) / 16)] & + (1 << ((freq - 24) % 16)))) return -EINVAL; /* not allowed */ + } else + return -EINVAL; + + /* if we get a usable frequency */ + if (freq != 0L) { + unsigned short area[16]; + unsigned short dac[2]; + unsigned short area_verify[16]; + unsigned short dac_verify[2]; + /* Corresponding gain (in the power adjust value table) + * See AT&T WaveLAN Data Manual, REF 407-024689/E, page 3-8 + * and WCIN062D.DOC, page 6.2.9. */ + unsigned short power_limit[] = { 40, 80, 120, 160, 0 }; + int power_band = 0; /* Selected band */ + unsigned short power_adjust; /* Correct value */ + + /* Search for the gain. */ + power_band = 0; + while ((freq > power_limit[power_band]) && + (power_limit[++power_band] != 0)); + + /* Read the first area. */ + fee_read(ioaddr, 0x00, area, 16); + + /* Read the DAC. */ + fee_read(ioaddr, 0x60, dac, 2); + + /* Read the new power adjust value. */ + fee_read(ioaddr, 0x6B - (power_band >> 1), &power_adjust, + 1); + if (power_band & 0x1) + power_adjust >>= 8; + else + power_adjust &= 0xFF; + +#ifdef DEBUG_IOCTL_INFO + printk(KERN_DEBUG "WaveLAN EEPROM Area 1: "); + for (i = 0; i < 16; i++) { + printk(" %04X", area[i]); + } + printk("\n"); + + printk(KERN_DEBUG "WaveLAN EEPROM DAC: %04X %04X\n", + dac[0], dac[1]); +#endif + + /* Frequency offset (for info only) */ + area[0] = ((freq << 5) & 0xFFE0) | (area[0] & 0x1F); + + /* Receiver Principle main divider coefficient */ + area[3] = (freq >> 1) + 2400L - 352L; + area[2] = ((freq & 0x1) << 4) | (area[2] & 0xFFEF); + + /* Transmitter Main divider coefficient */ + area[13] = (freq >> 1) + 2400L; + area[12] = ((freq & 0x1) << 4) | (area[2] & 0xFFEF); + + /* Other parts of the area are flags, bit streams or unused. */ + + /* Set the value in the DAC. */ + dac[1] = ((power_adjust >> 1) & 0x7F) | (dac[1] & 0xFF80); + dac[0] = ((power_adjust & 0x1) << 4) | (dac[0] & 0xFFEF); + + /* Write the first area. */ + fee_write(ioaddr, 0x00, area, 16); + + /* Write the DAC. */ + fee_write(ioaddr, 0x60, dac, 2); + + /* We now should verify here that the writing of the EEPROM went OK. */ + + /* Reread the first area. */ + fee_read(ioaddr, 0x00, area_verify, 16); + + /* Reread the DAC. */ + fee_read(ioaddr, 0x60, dac_verify, 2); + + /* Compare. */ + if (memcmp(area, area_verify, 16 * 2) || + memcmp(dac, dac_verify, 2 * 2)) { +#ifdef DEBUG_IOCTL_ERROR + printk(KERN_INFO + "WaveLAN: wv_set_frequency: unable to write new frequency to EEPROM(?).\n"); +#endif + return -EOPNOTSUPP; + } + + /* We must download the frequency parameters to the + * synthesizers (from the EEPROM - area 1) + * Note: as the EEPROM is automatically decremented, we set the end + * if the area... */ + mmc_out(ioaddr, mmwoff(0, mmw_fee_addr), 0x0F); + mmc_out(ioaddr, mmwoff(0, mmw_fee_ctrl), + MMW_FEE_CTRL_READ | MMW_FEE_CTRL_DWLD); + + /* Wait until the download is finished. */ + fee_wait(ioaddr, 100, 100); + + /* We must now download the power adjust value (gain) to + * the synthesizers (from the EEPROM - area 7 - DAC). */ + mmc_out(ioaddr, mmwoff(0, mmw_fee_addr), 0x61); + mmc_out(ioaddr, mmwoff(0, mmw_fee_ctrl), + MMW_FEE_CTRL_READ | MMW_FEE_CTRL_DWLD); + + /* Wait for the download to finish. */ + fee_wait(ioaddr, 100, 100); + +#ifdef DEBUG_IOCTL_INFO + /* Verification of what we have done */ + + printk(KERN_DEBUG "WaveLAN EEPROM Area 1: "); + for (i = 0; i < 16; i++) { + printk(" %04X", area_verify[i]); + } + printk("\n"); + + printk(KERN_DEBUG "WaveLAN EEPROM DAC: %04X %04X\n", + dac_verify[0], dac_verify[1]); +#endif + + return 0; + } else + return -EINVAL; /* Bah, never get there... */ +} + +/*------------------------------------------------------------------*/ +/* + * Give the list of available frequencies. + */ +static int wv_frequency_list(unsigned long ioaddr, /* I/O port of the card */ + iw_freq * list, /* List of frequencies to fill */ + int max) +{ /* Maximum number of frequencies */ + u16 table[10]; /* Authorized frequency table */ + long freq = 0L; /* offset to 2.4 GHz in .5 MHz + 12 MHz */ + int i; /* index in the table */ + int c = 0; /* Channel number */ + + /* Read the frequency table. */ + fee_read(ioaddr, 0x71 /* frequency table */ , table, 10); + + /* Check all frequencies. */ + i = 0; + for (freq = 0; freq < 150; freq++) + /* Look in the table if the frequency is allowed */ + if (table[9 - (freq / 16)] & (1 << (freq % 16))) { + /* Compute approximate channel number */ + while ((c < ARRAY_SIZE(channel_bands)) && + (((channel_bands[c] >> 1) - 24) < freq)) + c++; + list[i].i = c; /* Set the list index */ + + /* put in the list */ + list[i].m = (((freq + 24) * 5) + 24000L) * 10000; + list[i++].e = 1; + + /* Check number. */ + if (i >= max) + return (i); + } + + return (i); +} + +#ifdef IW_WIRELESS_SPY +/*------------------------------------------------------------------*/ +/* + * Gather wireless spy statistics: for each packet, compare the source + * address with our list, and if they match, get the statistics. + * Sorry, but this function really needs the wireless extensions. + */ +static inline void wl_spy_gather(struct net_device * dev, + u8 * mac, /* MAC address */ + u8 * stats) /* Statistics to gather */ +{ + struct iw_quality wstats; + + wstats.qual = stats[2] & MMR_SGNL_QUAL; + wstats.level = stats[0] & MMR_SIGNAL_LVL; + wstats.noise = stats[1] & MMR_SILENCE_LVL; + wstats.updated = 0x7; + + /* Update spy records */ + wireless_spy_update(dev, mac, &wstats); +} +#endif /* IW_WIRELESS_SPY */ + +#ifdef HISTOGRAM +/*------------------------------------------------------------------*/ +/* + * This function calculates a histogram of the signal level. + * As the noise is quite constant, it's like doing it on the SNR. + * We have defined a set of interval (lp->his_range), and each time + * the level goes in that interval, we increment the count (lp->his_sum). + * With this histogram you may detect if one WaveLAN is really weak, + * or you may also calculate the mean and standard deviation of the level. + */ +static inline void wl_his_gather(struct net_device * dev, u8 * stats) +{ /* Statistics to gather */ + net_local *lp = netdev_priv(dev); + u8 level = stats[0] & MMR_SIGNAL_LVL; + int i; + + /* Find the correct interval. */ + i = 0; + while ((i < (lp->his_number - 1)) + && (level >= lp->his_range[i++])); + + /* Increment interval counter. */ + (lp->his_sum[i])++; +} +#endif /* HISTOGRAM */ + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : get protocol name + */ +static int wavelan_get_name(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + strcpy(wrqu->name, "WaveLAN"); + return 0; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : set NWID + */ +static int wavelan_set_nwid(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned long ioaddr = dev->base_addr; + net_local *lp = netdev_priv(dev); /* lp is not unused */ + psa_t psa; + mm_t m; + unsigned long flags; + int ret = 0; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Set NWID in WaveLAN. */ + if (!wrqu->nwid.disabled) { + /* Set NWID in psa */ + psa.psa_nwid[0] = (wrqu->nwid.value & 0xFF00) >> 8; + psa.psa_nwid[1] = wrqu->nwid.value & 0xFF; + psa.psa_nwid_select = 0x01; + psa_write(ioaddr, lp->hacr, + (char *) psa.psa_nwid - (char *) &psa, + (unsigned char *) psa.psa_nwid, 3); + + /* Set NWID in mmc. */ + m.w.mmw_netw_id_l = psa.psa_nwid[1]; + m.w.mmw_netw_id_h = psa.psa_nwid[0]; + mmc_write(ioaddr, + (char *) &m.w.mmw_netw_id_l - + (char *) &m, + (unsigned char *) &m.w.mmw_netw_id_l, 2); + mmc_out(ioaddr, mmwoff(0, mmw_loopt_sel), 0x00); + } else { + /* Disable NWID in the psa. */ + psa.psa_nwid_select = 0x00; + psa_write(ioaddr, lp->hacr, + (char *) &psa.psa_nwid_select - + (char *) &psa, + (unsigned char *) &psa.psa_nwid_select, + 1); + + /* Disable NWID in the mmc (no filtering). */ + mmc_out(ioaddr, mmwoff(0, mmw_loopt_sel), + MMW_LOOPT_SEL_DIS_NWID); + } + /* update the Wavelan checksum */ + update_psa_checksum(dev, ioaddr, lp->hacr); + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : get NWID + */ +static int wavelan_get_nwid(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned long ioaddr = dev->base_addr; + net_local *lp = netdev_priv(dev); /* lp is not unused */ + psa_t psa; + unsigned long flags; + int ret = 0; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Read the NWID. */ + psa_read(ioaddr, lp->hacr, + (char *) psa.psa_nwid - (char *) &psa, + (unsigned char *) psa.psa_nwid, 3); + wrqu->nwid.value = (psa.psa_nwid[0] << 8) + psa.psa_nwid[1]; + wrqu->nwid.disabled = !(psa.psa_nwid_select); + wrqu->nwid.fixed = 1; /* Superfluous */ + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : set frequency + */ +static int wavelan_set_freq(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned long ioaddr = dev->base_addr; + net_local *lp = netdev_priv(dev); /* lp is not unused */ + unsigned long flags; + int ret; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Attempt to recognise 2.00 cards (2.4 GHz frequency selectable). */ + if (!(mmc_in(ioaddr, mmroff(0, mmr_fee_status)) & + (MMR_FEE_STATUS_DWLD | MMR_FEE_STATUS_BUSY))) + ret = wv_set_frequency(ioaddr, &(wrqu->freq)); + else + ret = -EOPNOTSUPP; + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : get frequency + */ +static int wavelan_get_freq(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned long ioaddr = dev->base_addr; + net_local *lp = netdev_priv(dev); /* lp is not unused */ + psa_t psa; + unsigned long flags; + int ret = 0; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Attempt to recognise 2.00 cards (2.4 GHz frequency selectable). + * Does it work for everybody, especially old cards? */ + if (!(mmc_in(ioaddr, mmroff(0, mmr_fee_status)) & + (MMR_FEE_STATUS_DWLD | MMR_FEE_STATUS_BUSY))) { + unsigned short freq; + + /* Ask the EEPROM to read the frequency from the first area. */ + fee_read(ioaddr, 0x00, &freq, 1); + wrqu->freq.m = ((freq >> 5) * 5 + 24000L) * 10000; + wrqu->freq.e = 1; + } else { + psa_read(ioaddr, lp->hacr, + (char *) &psa.psa_subband - (char *) &psa, + (unsigned char *) &psa.psa_subband, 1); + + if (psa.psa_subband <= 4) { + wrqu->freq.m = fixed_bands[psa.psa_subband]; + wrqu->freq.e = (psa.psa_subband != 0); + } else + ret = -EOPNOTSUPP; + } + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : set level threshold + */ +static int wavelan_set_sens(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned long ioaddr = dev->base_addr; + net_local *lp = netdev_priv(dev); /* lp is not unused */ + psa_t psa; + unsigned long flags; + int ret = 0; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Set the level threshold. */ + /* We should complain loudly if wrqu->sens.fixed = 0, because we + * can't set auto mode... */ + psa.psa_thr_pre_set = wrqu->sens.value & 0x3F; + psa_write(ioaddr, lp->hacr, + (char *) &psa.psa_thr_pre_set - (char *) &psa, + (unsigned char *) &psa.psa_thr_pre_set, 1); + /* update the Wavelan checksum */ + update_psa_checksum(dev, ioaddr, lp->hacr); + mmc_out(ioaddr, mmwoff(0, mmw_thr_pre_set), + psa.psa_thr_pre_set); + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : get level threshold + */ +static int wavelan_get_sens(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned long ioaddr = dev->base_addr; + net_local *lp = netdev_priv(dev); /* lp is not unused */ + psa_t psa; + unsigned long flags; + int ret = 0; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Read the level threshold. */ + psa_read(ioaddr, lp->hacr, + (char *) &psa.psa_thr_pre_set - (char *) &psa, + (unsigned char *) &psa.psa_thr_pre_set, 1); + wrqu->sens.value = psa.psa_thr_pre_set & 0x3F; + wrqu->sens.fixed = 1; + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : set encryption key + */ +static int wavelan_set_encode(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned long ioaddr = dev->base_addr; + net_local *lp = netdev_priv(dev); /* lp is not unused */ + unsigned long flags; + psa_t psa; + int ret = 0; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Check if capable of encryption */ + if (!mmc_encr(ioaddr)) { + ret = -EOPNOTSUPP; + } + + /* Check the size of the key */ + if((wrqu->encoding.length != 8) && (wrqu->encoding.length != 0)) { + ret = -EINVAL; + } + + if(!ret) { + /* Basic checking... */ + if (wrqu->encoding.length == 8) { + /* Copy the key in the driver */ + memcpy(psa.psa_encryption_key, extra, + wrqu->encoding.length); + psa.psa_encryption_select = 1; + + psa_write(ioaddr, lp->hacr, + (char *) &psa.psa_encryption_select - + (char *) &psa, + (unsigned char *) &psa. + psa_encryption_select, 8 + 1); + + mmc_out(ioaddr, mmwoff(0, mmw_encr_enable), + MMW_ENCR_ENABLE_EN | MMW_ENCR_ENABLE_MODE); + mmc_write(ioaddr, mmwoff(0, mmw_encr_key), + (unsigned char *) &psa. + psa_encryption_key, 8); + } + + /* disable encryption */ + if (wrqu->encoding.flags & IW_ENCODE_DISABLED) { + psa.psa_encryption_select = 0; + psa_write(ioaddr, lp->hacr, + (char *) &psa.psa_encryption_select - + (char *) &psa, + (unsigned char *) &psa. + psa_encryption_select, 1); + + mmc_out(ioaddr, mmwoff(0, mmw_encr_enable), 0); + } + /* update the Wavelan checksum */ + update_psa_checksum(dev, ioaddr, lp->hacr); + } + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : get encryption key + */ +static int wavelan_get_encode(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned long ioaddr = dev->base_addr; + net_local *lp = netdev_priv(dev); /* lp is not unused */ + psa_t psa; + unsigned long flags; + int ret = 0; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Check if encryption is available */ + if (!mmc_encr(ioaddr)) { + ret = -EOPNOTSUPP; + } else { + /* Read the encryption key */ + psa_read(ioaddr, lp->hacr, + (char *) &psa.psa_encryption_select - + (char *) &psa, + (unsigned char *) &psa. + psa_encryption_select, 1 + 8); + + /* encryption is enabled ? */ + if (psa.psa_encryption_select) + wrqu->encoding.flags = IW_ENCODE_ENABLED; + else + wrqu->encoding.flags = IW_ENCODE_DISABLED; + wrqu->encoding.flags |= mmc_encr(ioaddr); + + /* Copy the key to the user buffer */ + wrqu->encoding.length = 8; + memcpy(extra, psa.psa_encryption_key, wrqu->encoding.length); + } + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : get range info + */ +static int wavelan_get_range(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned long ioaddr = dev->base_addr; + net_local *lp = netdev_priv(dev); /* lp is not unused */ + struct iw_range *range = (struct iw_range *) extra; + unsigned long flags; + int ret = 0; + + /* Set the length (very important for backward compatibility) */ + wrqu->data.length = sizeof(struct iw_range); + + /* Set all the info we don't care or don't know about to zero */ + memset(range, 0, sizeof(struct iw_range)); + + /* Set the Wireless Extension versions */ + range->we_version_compiled = WIRELESS_EXT; + range->we_version_source = 9; + + /* Set information in the range struct. */ + range->throughput = 1.6 * 1000 * 1000; /* don't argue on this ! */ + range->min_nwid = 0x0000; + range->max_nwid = 0xFFFF; + + range->sensitivity = 0x3F; + range->max_qual.qual = MMR_SGNL_QUAL; + range->max_qual.level = MMR_SIGNAL_LVL; + range->max_qual.noise = MMR_SILENCE_LVL; + range->avg_qual.qual = MMR_SGNL_QUAL; /* Always max */ + /* Need to get better values for those two */ + range->avg_qual.level = 30; + range->avg_qual.noise = 8; + + range->num_bitrates = 1; + range->bitrate[0] = 2000000; /* 2 Mb/s */ + + /* Event capability (kernel + driver) */ + range->event_capa[0] = (IW_EVENT_CAPA_MASK(0x8B02) | + IW_EVENT_CAPA_MASK(0x8B04)); + range->event_capa[1] = IW_EVENT_CAPA_K_1; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Attempt to recognise 2.00 cards (2.4 GHz frequency selectable). */ + if (!(mmc_in(ioaddr, mmroff(0, mmr_fee_status)) & + (MMR_FEE_STATUS_DWLD | MMR_FEE_STATUS_BUSY))) { + range->num_channels = 10; + range->num_frequency = wv_frequency_list(ioaddr, range->freq, + IW_MAX_FREQUENCIES); + } else + range->num_channels = range->num_frequency = 0; + + /* Encryption supported ? */ + if (mmc_encr(ioaddr)) { + range->encoding_size[0] = 8; /* DES = 64 bits key */ + range->num_encoding_sizes = 1; + range->max_encoding_tokens = 1; /* Only one key possible */ + } else { + range->num_encoding_sizes = 0; + range->max_encoding_tokens = 0; + } + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Private Handler : set quality threshold + */ +static int wavelan_set_qthr(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned long ioaddr = dev->base_addr; + net_local *lp = netdev_priv(dev); /* lp is not unused */ + psa_t psa; + unsigned long flags; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + psa.psa_quality_thr = *(extra) & 0x0F; + psa_write(ioaddr, lp->hacr, + (char *) &psa.psa_quality_thr - (char *) &psa, + (unsigned char *) &psa.psa_quality_thr, 1); + /* update the Wavelan checksum */ + update_psa_checksum(dev, ioaddr, lp->hacr); + mmc_out(ioaddr, mmwoff(0, mmw_quality_thr), + psa.psa_quality_thr); + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return 0; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Private Handler : get quality threshold + */ +static int wavelan_get_qthr(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned long ioaddr = dev->base_addr; + net_local *lp = netdev_priv(dev); /* lp is not unused */ + psa_t psa; + unsigned long flags; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + psa_read(ioaddr, lp->hacr, + (char *) &psa.psa_quality_thr - (char *) &psa, + (unsigned char *) &psa.psa_quality_thr, 1); + *(extra) = psa.psa_quality_thr & 0x0F; + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return 0; +} + +#ifdef HISTOGRAM +/*------------------------------------------------------------------*/ +/* + * Wireless Private Handler : set histogram + */ +static int wavelan_set_histo(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + net_local *lp = netdev_priv(dev); /* lp is not unused */ + + /* Check the number of intervals. */ + if (wrqu->data.length > 16) { + return(-E2BIG); + } + + /* Disable histo while we copy the addresses. + * As we don't disable interrupts, we need to do this */ + lp->his_number = 0; + + /* Are there ranges to copy? */ + if (wrqu->data.length > 0) { + /* Copy interval ranges to the driver */ + memcpy(lp->his_range, extra, wrqu->data.length); + + { + int i; + printk(KERN_DEBUG "Histo :"); + for(i = 0; i < wrqu->data.length; i++) + printk(" %d", lp->his_range[i]); + printk("\n"); + } + + /* Reset result structure. */ + memset(lp->his_sum, 0x00, sizeof(long) * 16); + } + + /* Now we can set the number of ranges */ + lp->his_number = wrqu->data.length; + + return(0); +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Private Handler : get histogram + */ +static int wavelan_get_histo(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + net_local *lp = netdev_priv(dev); /* lp is not unused */ + + /* Set the number of intervals. */ + wrqu->data.length = lp->his_number; + + /* Give back the distribution statistics */ + if(lp->his_number > 0) + memcpy(extra, lp->his_sum, sizeof(long) * lp->his_number); + + return(0); +} +#endif /* HISTOGRAM */ + +/*------------------------------------------------------------------*/ +/* + * Structures to export the Wireless Handlers + */ + +static const iw_handler wavelan_handler[] = +{ + NULL, /* SIOCSIWNAME */ + wavelan_get_name, /* SIOCGIWNAME */ + wavelan_set_nwid, /* SIOCSIWNWID */ + wavelan_get_nwid, /* SIOCGIWNWID */ + wavelan_set_freq, /* SIOCSIWFREQ */ + wavelan_get_freq, /* SIOCGIWFREQ */ + NULL, /* SIOCSIWMODE */ + NULL, /* SIOCGIWMODE */ + wavelan_set_sens, /* SIOCSIWSENS */ + wavelan_get_sens, /* SIOCGIWSENS */ + NULL, /* SIOCSIWRANGE */ + wavelan_get_range, /* SIOCGIWRANGE */ + NULL, /* SIOCSIWPRIV */ + NULL, /* SIOCGIWPRIV */ + NULL, /* SIOCSIWSTATS */ + NULL, /* SIOCGIWSTATS */ + iw_handler_set_spy, /* SIOCSIWSPY */ + iw_handler_get_spy, /* SIOCGIWSPY */ + iw_handler_set_thrspy, /* SIOCSIWTHRSPY */ + iw_handler_get_thrspy, /* SIOCGIWTHRSPY */ + NULL, /* SIOCSIWAP */ + NULL, /* SIOCGIWAP */ + NULL, /* -- hole -- */ + NULL, /* SIOCGIWAPLIST */ + NULL, /* -- hole -- */ + NULL, /* -- hole -- */ + NULL, /* SIOCSIWESSID */ + NULL, /* SIOCGIWESSID */ + NULL, /* SIOCSIWNICKN */ + NULL, /* SIOCGIWNICKN */ + NULL, /* -- hole -- */ + NULL, /* -- hole -- */ + NULL, /* SIOCSIWRATE */ + NULL, /* SIOCGIWRATE */ + NULL, /* SIOCSIWRTS */ + NULL, /* SIOCGIWRTS */ + NULL, /* SIOCSIWFRAG */ + NULL, /* SIOCGIWFRAG */ + NULL, /* SIOCSIWTXPOW */ + NULL, /* SIOCGIWTXPOW */ + NULL, /* SIOCSIWRETRY */ + NULL, /* SIOCGIWRETRY */ + /* Bummer ! Why those are only at the end ??? */ + wavelan_set_encode, /* SIOCSIWENCODE */ + wavelan_get_encode, /* SIOCGIWENCODE */ +}; + +static const iw_handler wavelan_private_handler[] = +{ + wavelan_set_qthr, /* SIOCIWFIRSTPRIV */ + wavelan_get_qthr, /* SIOCIWFIRSTPRIV + 1 */ +#ifdef HISTOGRAM + wavelan_set_histo, /* SIOCIWFIRSTPRIV + 2 */ + wavelan_get_histo, /* SIOCIWFIRSTPRIV + 3 */ +#endif /* HISTOGRAM */ +}; + +static const struct iw_priv_args wavelan_private_args[] = { +/*{ cmd, set_args, get_args, name } */ + { SIOCSIPQTHR, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | 1, 0, "setqualthr" }, + { SIOCGIPQTHR, 0, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | 1, "getqualthr" }, + { SIOCSIPHISTO, IW_PRIV_TYPE_BYTE | 16, 0, "sethisto" }, + { SIOCGIPHISTO, 0, IW_PRIV_TYPE_INT | 16, "gethisto" }, +}; + +static const struct iw_handler_def wavelan_handler_def = +{ + .num_standard = ARRAY_SIZE(wavelan_handler), + .num_private = ARRAY_SIZE(wavelan_private_handler), + .num_private_args = ARRAY_SIZE(wavelan_private_args), + .standard = wavelan_handler, + .private = wavelan_private_handler, + .private_args = wavelan_private_args, + .get_wireless_stats = wavelan_get_wireless_stats, +}; + +/*------------------------------------------------------------------*/ +/* + * Get wireless statistics. + * Called by /proc/net/wireless + */ +static iw_stats *wavelan_get_wireless_stats(struct net_device * dev) +{ + unsigned long ioaddr = dev->base_addr; + net_local *lp = netdev_priv(dev); + mmr_t m; + iw_stats *wstats; + unsigned long flags; + +#ifdef DEBUG_IOCTL_TRACE + printk(KERN_DEBUG "%s: ->wavelan_get_wireless_stats()\n", + dev->name); +#endif + + /* Check */ + if (lp == (net_local *) NULL) + return (iw_stats *) NULL; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + wstats = &lp->wstats; + + /* Get data from the mmc. */ + mmc_out(ioaddr, mmwoff(0, mmw_freeze), 1); + + mmc_read(ioaddr, mmroff(0, mmr_dce_status), &m.mmr_dce_status, 1); + mmc_read(ioaddr, mmroff(0, mmr_wrong_nwid_l), &m.mmr_wrong_nwid_l, + 2); + mmc_read(ioaddr, mmroff(0, mmr_thr_pre_set), &m.mmr_thr_pre_set, + 4); + + mmc_out(ioaddr, mmwoff(0, mmw_freeze), 0); + + /* Copy data to wireless stuff. */ + wstats->status = m.mmr_dce_status & MMR_DCE_STATUS; + wstats->qual.qual = m.mmr_sgnl_qual & MMR_SGNL_QUAL; + wstats->qual.level = m.mmr_signal_lvl & MMR_SIGNAL_LVL; + wstats->qual.noise = m.mmr_silence_lvl & MMR_SILENCE_LVL; + wstats->qual.updated = (((m. mmr_signal_lvl & MMR_SIGNAL_LVL_VALID) >> 7) + | ((m.mmr_signal_lvl & MMR_SIGNAL_LVL_VALID) >> 6) + | ((m.mmr_silence_lvl & MMR_SILENCE_LVL_VALID) >> 5)); + wstats->discard.nwid += (m.mmr_wrong_nwid_h << 8) | m.mmr_wrong_nwid_l; + wstats->discard.code = 0L; + wstats->discard.misc = 0L; + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + +#ifdef DEBUG_IOCTL_TRACE + printk(KERN_DEBUG "%s: <-wavelan_get_wireless_stats()\n", + dev->name); +#endif + return &lp->wstats; +} + +/************************* PACKET RECEPTION *************************/ +/* + * This part deals with receiving the packets. + * The interrupt handler gets an interrupt when a packet has been + * successfully received and calls this part. + */ + +/*------------------------------------------------------------------*/ +/* + * This routine does the actual copying of data (including the Ethernet + * header structure) from the WaveLAN card to an sk_buff chain that + * will be passed up to the network interface layer. NOTE: we + * currently don't handle trailer protocols (neither does the rest of + * the network interface), so if that is needed, it will (at least in + * part) be added here. The contents of the receive ring buffer are + * copied to a message chain that is then passed to the kernel. + * + * Note: if any errors occur, the packet is "dropped on the floor". + * (called by wv_packet_rcv()) + */ +static void +wv_packet_read(struct net_device * dev, u16 buf_off, int sksize) +{ + net_local *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + struct sk_buff *skb; + +#ifdef DEBUG_RX_TRACE + printk(KERN_DEBUG "%s: ->wv_packet_read(0x%X, %d)\n", + dev->name, buf_off, sksize); +#endif + + /* Allocate buffer for the data */ + if ((skb = dev_alloc_skb(sksize)) == (struct sk_buff *) NULL) { +#ifdef DEBUG_RX_ERROR + printk(KERN_INFO + "%s: wv_packet_read(): could not alloc_skb(%d, GFP_ATOMIC).\n", + dev->name, sksize); +#endif + dev->stats.rx_dropped++; + return; + } + + /* Copy the packet to the buffer. */ + obram_read(ioaddr, buf_off, skb_put(skb, sksize), sksize); + skb->protocol = eth_type_trans(skb, dev); + +#ifdef DEBUG_RX_INFO + wv_packet_info(skb_mac_header(skb), sksize, dev->name, + "wv_packet_read"); +#endif /* DEBUG_RX_INFO */ + + /* Statistics-gathering and associated stuff. + * It seem a bit messy with all the define, but it's really + * simple... */ + if ( +#ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */ + (lp->spy_data.spy_number > 0) || +#endif /* IW_WIRELESS_SPY */ +#ifdef HISTOGRAM + (lp->his_number > 0) || +#endif /* HISTOGRAM */ + 0) { + u8 stats[3]; /* signal level, noise level, signal quality */ + + /* Read signal level, silence level and signal quality bytes */ + /* Note: in the PCMCIA hardware, these are part of the frame. + * It seems that for the ISA hardware, it's nowhere to be + * found in the frame, so I'm obliged to do this (it has a + * side effect on /proc/net/wireless). + * Any ideas? + */ + mmc_out(ioaddr, mmwoff(0, mmw_freeze), 1); + mmc_read(ioaddr, mmroff(0, mmr_signal_lvl), stats, 3); + mmc_out(ioaddr, mmwoff(0, mmw_freeze), 0); + +#ifdef DEBUG_RX_INFO + printk(KERN_DEBUG + "%s: wv_packet_read(): Signal level %d/63, Silence level %d/63, signal quality %d/16\n", + dev->name, stats[0] & 0x3F, stats[1] & 0x3F, + stats[2] & 0x0F); +#endif + + /* Spying stuff */ +#ifdef IW_WIRELESS_SPY + wl_spy_gather(dev, skb_mac_header(skb) + WAVELAN_ADDR_SIZE, + stats); +#endif /* IW_WIRELESS_SPY */ +#ifdef HISTOGRAM + wl_his_gather(dev, stats); +#endif /* HISTOGRAM */ + } + + /* + * Hand the packet to the network module. + */ + netif_rx(skb); + + /* Keep statistics up to date */ + dev->stats.rx_packets++; + dev->stats.rx_bytes += sksize; + +#ifdef DEBUG_RX_TRACE + printk(KERN_DEBUG "%s: <-wv_packet_read()\n", dev->name); +#endif +} + +/*------------------------------------------------------------------*/ +/* + * Transfer as many packets as we can + * from the device RAM. + * (called in wavelan_interrupt()). + * Note : the spinlock is already grabbed for us. + */ +static void wv_receive(struct net_device * dev) +{ + unsigned long ioaddr = dev->base_addr; + net_local *lp = netdev_priv(dev); + fd_t fd; + rbd_t rbd; + int nreaped = 0; + +#ifdef DEBUG_RX_TRACE + printk(KERN_DEBUG "%s: ->wv_receive()\n", dev->name); +#endif + + /* Loop on each received packet. */ + for (;;) { + obram_read(ioaddr, lp->rx_head, (unsigned char *) &fd, + sizeof(fd)); + + /* Note about the status : + * It start up to be 0 (the value we set). Then, when the RU + * grab the buffer to prepare for reception, it sets the + * FD_STATUS_B flag. When the RU has finished receiving the + * frame, it clears FD_STATUS_B, set FD_STATUS_C to indicate + * completion and set the other flags to indicate the eventual + * errors. FD_STATUS_OK indicates that the reception was OK. + */ + + /* If the current frame is not complete, we have reached the end. */ + if ((fd.fd_status & FD_STATUS_C) != FD_STATUS_C) + break; /* This is how we exit the loop. */ + + nreaped++; + + /* Check whether frame was correctly received. */ + if ((fd.fd_status & FD_STATUS_OK) == FD_STATUS_OK) { + /* Does the frame contain a pointer to the data? Let's check. */ + if (fd.fd_rbd_offset != I82586NULL) { + /* Read the receive buffer descriptor */ + obram_read(ioaddr, fd.fd_rbd_offset, + (unsigned char *) &rbd, + sizeof(rbd)); + +#ifdef DEBUG_RX_ERROR + if ((rbd.rbd_status & RBD_STATUS_EOF) != + RBD_STATUS_EOF) printk(KERN_INFO + "%s: wv_receive(): missing EOF flag.\n", + dev->name); + + if ((rbd.rbd_status & RBD_STATUS_F) != + RBD_STATUS_F) printk(KERN_INFO + "%s: wv_receive(): missing F flag.\n", + dev->name); +#endif /* DEBUG_RX_ERROR */ + + /* Read the packet and transmit to Linux */ + wv_packet_read(dev, rbd.rbd_bufl, + rbd. + rbd_status & + RBD_STATUS_ACNT); + } +#ifdef DEBUG_RX_ERROR + else /* if frame has no data */ + printk(KERN_INFO + "%s: wv_receive(): frame has no data.\n", + dev->name); +#endif + } else { /* If reception was no successful */ + + dev->stats.rx_errors++; + +#ifdef DEBUG_RX_INFO + printk(KERN_DEBUG + "%s: wv_receive(): frame not received successfully (%X).\n", + dev->name, fd.fd_status); +#endif + +#ifdef DEBUG_RX_ERROR + if ((fd.fd_status & FD_STATUS_S6) != 0) + printk(KERN_INFO + "%s: wv_receive(): no EOF flag.\n", + dev->name); +#endif + + if ((fd.fd_status & FD_STATUS_S7) != 0) { + dev->stats.rx_length_errors++; +#ifdef DEBUG_RX_FAIL + printk(KERN_DEBUG + "%s: wv_receive(): frame too short.\n", + dev->name); +#endif + } + + if ((fd.fd_status & FD_STATUS_S8) != 0) { + dev->stats.rx_over_errors++; +#ifdef DEBUG_RX_FAIL + printk(KERN_DEBUG + "%s: wv_receive(): rx DMA overrun.\n", + dev->name); +#endif + } + + if ((fd.fd_status & FD_STATUS_S9) != 0) { + dev->stats.rx_fifo_errors++; +#ifdef DEBUG_RX_FAIL + printk(KERN_DEBUG + "%s: wv_receive(): ran out of resources.\n", + dev->name); +#endif + } + + if ((fd.fd_status & FD_STATUS_S10) != 0) { + dev->stats.rx_frame_errors++; +#ifdef DEBUG_RX_FAIL + printk(KERN_DEBUG + "%s: wv_receive(): alignment error.\n", + dev->name); +#endif + } + + if ((fd.fd_status & FD_STATUS_S11) != 0) { + dev->stats.rx_crc_errors++; +#ifdef DEBUG_RX_FAIL + printk(KERN_DEBUG + "%s: wv_receive(): CRC error.\n", + dev->name); +#endif + } + } + + fd.fd_status = 0; + obram_write(ioaddr, fdoff(lp->rx_head, fd_status), + (unsigned char *) &fd.fd_status, + sizeof(fd.fd_status)); + + fd.fd_command = FD_COMMAND_EL; + obram_write(ioaddr, fdoff(lp->rx_head, fd_command), + (unsigned char *) &fd.fd_command, + sizeof(fd.fd_command)); + + fd.fd_command = 0; + obram_write(ioaddr, fdoff(lp->rx_last, fd_command), + (unsigned char *) &fd.fd_command, + sizeof(fd.fd_command)); + + lp->rx_last = lp->rx_head; + lp->rx_head = fd.fd_link_offset; + } /* for(;;) -> loop on all frames */ + +#ifdef DEBUG_RX_INFO + if (nreaped > 1) + printk(KERN_DEBUG "%s: wv_receive(): reaped %d\n", + dev->name, nreaped); +#endif +#ifdef DEBUG_RX_TRACE + printk(KERN_DEBUG "%s: <-wv_receive()\n", dev->name); +#endif +} + +/*********************** PACKET TRANSMISSION ***********************/ +/* + * This part deals with sending packets through the WaveLAN. + * + */ + +/*------------------------------------------------------------------*/ +/* + * This routine fills in the appropriate registers and memory + * locations on the WaveLAN card and starts the card off on + * the transmit. + * + * The principle: + * Each block contains a transmit command, a NOP command, + * a transmit block descriptor and a buffer. + * The CU read the transmit block which point to the tbd, + * read the tbd and the content of the buffer. + * When it has finish with it, it goes to the next command + * which in our case is the NOP. The NOP points on itself, + * so the CU stop here. + * When we add the next block, we modify the previous nop + * to make it point on the new tx command. + * Simple, isn't it ? + * + * (called in wavelan_packet_xmit()) + */ +static int wv_packet_write(struct net_device * dev, void *buf, short length) +{ + net_local *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + unsigned short txblock; + unsigned short txpred; + unsigned short tx_addr; + unsigned short nop_addr; + unsigned short tbd_addr; + unsigned short buf_addr; + ac_tx_t tx; + ac_nop_t nop; + tbd_t tbd; + int clen = length; + unsigned long flags; + +#ifdef DEBUG_TX_TRACE + printk(KERN_DEBUG "%s: ->wv_packet_write(%d)\n", dev->name, + length); +#endif + + spin_lock_irqsave(&lp->spinlock, flags); + + /* Check nothing bad has happened */ + if (lp->tx_n_in_use == (NTXBLOCKS - 1)) { +#ifdef DEBUG_TX_ERROR + printk(KERN_INFO "%s: wv_packet_write(): Tx queue full.\n", + dev->name); +#endif + spin_unlock_irqrestore(&lp->spinlock, flags); + return 1; + } + + /* Calculate addresses of next block and previous block. */ + txblock = lp->tx_first_free; + txpred = txblock - TXBLOCKZ; + if (txpred < OFFSET_CU) + txpred += NTXBLOCKS * TXBLOCKZ; + lp->tx_first_free += TXBLOCKZ; + if (lp->tx_first_free >= OFFSET_CU + NTXBLOCKS * TXBLOCKZ) + lp->tx_first_free -= NTXBLOCKS * TXBLOCKZ; + + lp->tx_n_in_use++; + + /* Calculate addresses of the different parts of the block. */ + tx_addr = txblock; + nop_addr = tx_addr + sizeof(tx); + tbd_addr = nop_addr + sizeof(nop); + buf_addr = tbd_addr + sizeof(tbd); + + /* + * Transmit command + */ + tx.tx_h.ac_status = 0; + obram_write(ioaddr, toff(ac_tx_t, tx_addr, tx_h.ac_status), + (unsigned char *) &tx.tx_h.ac_status, + sizeof(tx.tx_h.ac_status)); + + /* + * NOP command + */ + nop.nop_h.ac_status = 0; + obram_write(ioaddr, toff(ac_nop_t, nop_addr, nop_h.ac_status), + (unsigned char *) &nop.nop_h.ac_status, + sizeof(nop.nop_h.ac_status)); + nop.nop_h.ac_link = nop_addr; + obram_write(ioaddr, toff(ac_nop_t, nop_addr, nop_h.ac_link), + (unsigned char *) &nop.nop_h.ac_link, + sizeof(nop.nop_h.ac_link)); + + /* + * Transmit buffer descriptor + */ + tbd.tbd_status = TBD_STATUS_EOF | (TBD_STATUS_ACNT & clen); + tbd.tbd_next_bd_offset = I82586NULL; + tbd.tbd_bufl = buf_addr; + tbd.tbd_bufh = 0; + obram_write(ioaddr, tbd_addr, (unsigned char *) &tbd, sizeof(tbd)); + + /* + * Data + */ + obram_write(ioaddr, buf_addr, buf, length); + + /* + * Overwrite the predecessor NOP link + * so that it points to this txblock. + */ + nop_addr = txpred + sizeof(tx); + nop.nop_h.ac_status = 0; + obram_write(ioaddr, toff(ac_nop_t, nop_addr, nop_h.ac_status), + (unsigned char *) &nop.nop_h.ac_status, + sizeof(nop.nop_h.ac_status)); + nop.nop_h.ac_link = txblock; + obram_write(ioaddr, toff(ac_nop_t, nop_addr, nop_h.ac_link), + (unsigned char *) &nop.nop_h.ac_link, + sizeof(nop.nop_h.ac_link)); + + /* Make sure the watchdog will keep quiet for a while */ + dev->trans_start = jiffies; + + /* Keep stats up to date. */ + dev->stats.tx_bytes += length; + + if (lp->tx_first_in_use == I82586NULL) + lp->tx_first_in_use = txblock; + + if (lp->tx_n_in_use < NTXBLOCKS - 1) + netif_wake_queue(dev); + + spin_unlock_irqrestore(&lp->spinlock, flags); + +#ifdef DEBUG_TX_INFO + wv_packet_info((u8 *) buf, length, dev->name, + "wv_packet_write"); +#endif /* DEBUG_TX_INFO */ + +#ifdef DEBUG_TX_TRACE + printk(KERN_DEBUG "%s: <-wv_packet_write()\n", dev->name); +#endif + + return 0; +} + +/*------------------------------------------------------------------*/ +/* + * This routine is called when we want to send a packet (NET3 callback) + * In this routine, we check if the harware is ready to accept + * the packet. We also prevent reentrance. Then we call the function + * to send the packet. + */ +static netdev_tx_t wavelan_packet_xmit(struct sk_buff *skb, + struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + unsigned long flags; + char data[ETH_ZLEN]; + +#ifdef DEBUG_TX_TRACE + printk(KERN_DEBUG "%s: ->wavelan_packet_xmit(0x%X)\n", dev->name, + (unsigned) skb); +#endif + + /* + * Block a timer-based transmit from overlapping. + * In other words, prevent reentering this routine. + */ + netif_stop_queue(dev); + + /* If somebody has asked to reconfigure the controller, + * we can do it now. + */ + if (lp->reconfig_82586) { + spin_lock_irqsave(&lp->spinlock, flags); + wv_82586_config(dev); + spin_unlock_irqrestore(&lp->spinlock, flags); + /* Check that we can continue */ + if (lp->tx_n_in_use == (NTXBLOCKS - 1)) + return NETDEV_TX_BUSY; + } + + /* Do we need some padding? */ + /* Note : on wireless the propagation time is in the order of 1us, + * and we don't have the Ethernet specific requirement of beeing + * able to detect collisions, therefore in theory we don't really + * need to pad. Jean II */ + if (skb->len < ETH_ZLEN) { + memset(data, 0, ETH_ZLEN); + skb_copy_from_linear_data(skb, data, skb->len); + /* Write packet on the card */ + if(wv_packet_write(dev, data, ETH_ZLEN)) + return NETDEV_TX_BUSY; /* We failed */ + } + else if(wv_packet_write(dev, skb->data, skb->len)) + return NETDEV_TX_BUSY; /* We failed */ + + + dev_kfree_skb(skb); + +#ifdef DEBUG_TX_TRACE + printk(KERN_DEBUG "%s: <-wavelan_packet_xmit()\n", dev->name); +#endif + return NETDEV_TX_OK; +} + +/*********************** HARDWARE CONFIGURATION ***********************/ +/* + * This part does the real job of starting and configuring the hardware. + */ + +/*--------------------------------------------------------------------*/ +/* + * Routine to initialize the Modem Management Controller. + * (called by wv_hw_reset()) + */ +static int wv_mmc_init(struct net_device * dev) +{ + unsigned long ioaddr = dev->base_addr; + net_local *lp = netdev_priv(dev); + psa_t psa; + mmw_t m; + int configured; + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: ->wv_mmc_init()\n", dev->name); +#endif + + /* Read the parameter storage area. */ + psa_read(ioaddr, lp->hacr, 0, (unsigned char *) &psa, sizeof(psa)); + +#ifdef USE_PSA_CONFIG + configured = psa.psa_conf_status & 1; +#else + configured = 0; +#endif + + /* Is the PSA is not configured */ + if (!configured) { + /* User will be able to configure NWID later (with iwconfig). */ + psa.psa_nwid[0] = 0; + psa.psa_nwid[1] = 0; + + /* no NWID checking since NWID is not set */ + psa.psa_nwid_select = 0; + + /* Disable encryption */ + psa.psa_encryption_select = 0; + + /* Set to standard values: + * 0x04 for AT, + * 0x01 for MCA, + * 0x04 for PCMCIA and 2.00 card (AT&T 407-024689/E document) + */ + if (psa.psa_comp_number & 1) + psa.psa_thr_pre_set = 0x01; + else + psa.psa_thr_pre_set = 0x04; + psa.psa_quality_thr = 0x03; + + /* It is configured */ + psa.psa_conf_status |= 1; + +#ifdef USE_PSA_CONFIG + /* Write the psa. */ + psa_write(ioaddr, lp->hacr, + (char *) psa.psa_nwid - (char *) &psa, + (unsigned char *) psa.psa_nwid, 4); + psa_write(ioaddr, lp->hacr, + (char *) &psa.psa_thr_pre_set - (char *) &psa, + (unsigned char *) &psa.psa_thr_pre_set, 1); + psa_write(ioaddr, lp->hacr, + (char *) &psa.psa_quality_thr - (char *) &psa, + (unsigned char *) &psa.psa_quality_thr, 1); + psa_write(ioaddr, lp->hacr, + (char *) &psa.psa_conf_status - (char *) &psa, + (unsigned char *) &psa.psa_conf_status, 1); + /* update the Wavelan checksum */ + update_psa_checksum(dev, ioaddr, lp->hacr); +#endif + } + + /* Zero the mmc structure. */ + memset(&m, 0x00, sizeof(m)); + + /* Copy PSA info to the mmc. */ + m.mmw_netw_id_l = psa.psa_nwid[1]; + m.mmw_netw_id_h = psa.psa_nwid[0]; + + if (psa.psa_nwid_select & 1) + m.mmw_loopt_sel = 0x00; + else + m.mmw_loopt_sel = MMW_LOOPT_SEL_DIS_NWID; + + memcpy(&m.mmw_encr_key, &psa.psa_encryption_key, + sizeof(m.mmw_encr_key)); + + if (psa.psa_encryption_select) + m.mmw_encr_enable = + MMW_ENCR_ENABLE_EN | MMW_ENCR_ENABLE_MODE; + else + m.mmw_encr_enable = 0; + + m.mmw_thr_pre_set = psa.psa_thr_pre_set & 0x3F; + m.mmw_quality_thr = psa.psa_quality_thr & 0x0F; + + /* + * Set default modem control parameters. + * See NCR document 407-0024326 Rev. A. + */ + m.mmw_jabber_enable = 0x01; + m.mmw_freeze = 0; + m.mmw_anten_sel = MMW_ANTEN_SEL_ALG_EN; + m.mmw_ifs = 0x20; + m.mmw_mod_delay = 0x04; + m.mmw_jam_time = 0x38; + + m.mmw_des_io_invert = 0; + m.mmw_decay_prm = 0; + m.mmw_decay_updat_prm = 0; + + /* Write all info to MMC. */ + mmc_write(ioaddr, 0, (u8 *) & m, sizeof(m)); + + /* The following code starts the modem of the 2.00 frequency + * selectable cards at power on. It's not strictly needed for the + * following boots. + * The original patch was by Joe Finney for the PCMCIA driver, but + * I've cleaned it up a bit and added documentation. + * Thanks to Loeke Brederveld from Lucent for the info. + */ + + /* Attempt to recognise 2.00 cards (2.4 GHz frequency selectable) + * Does it work for everybody, especially old cards? */ + /* Note: WFREQSEL verifies that it is able to read a sensible + * frequency from EEPROM (address 0x00) and that MMR_FEE_STATUS_ID + * is 0xA (Xilinx version) or 0xB (Ariadne version). + * My test is more crude but does work. */ + if (!(mmc_in(ioaddr, mmroff(0, mmr_fee_status)) & + (MMR_FEE_STATUS_DWLD | MMR_FEE_STATUS_BUSY))) { + /* We must download the frequency parameters to the + * synthesizers (from the EEPROM - area 1) + * Note: as the EEPROM is automatically decremented, we set the end + * if the area... */ + m.mmw_fee_addr = 0x0F; + m.mmw_fee_ctrl = MMW_FEE_CTRL_READ | MMW_FEE_CTRL_DWLD; + mmc_write(ioaddr, (char *) &m.mmw_fee_ctrl - (char *) &m, + (unsigned char *) &m.mmw_fee_ctrl, 2); + + /* Wait until the download is finished. */ + fee_wait(ioaddr, 100, 100); + +#ifdef DEBUG_CONFIG_INFO + /* The frequency was in the last word downloaded. */ + mmc_read(ioaddr, (char *) &m.mmw_fee_data_l - (char *) &m, + (unsigned char *) &m.mmw_fee_data_l, 2); + + /* Print some info for the user. */ + printk(KERN_DEBUG + "%s: WaveLAN 2.00 recognised (frequency select). Current frequency = %ld\n", + dev->name, + ((m. + mmw_fee_data_h << 4) | (m.mmw_fee_data_l >> 4)) * + 5 / 2 + 24000L); +#endif + + /* We must now download the power adjust value (gain) to + * the synthesizers (from the EEPROM - area 7 - DAC). */ + m.mmw_fee_addr = 0x61; + m.mmw_fee_ctrl = MMW_FEE_CTRL_READ | MMW_FEE_CTRL_DWLD; + mmc_write(ioaddr, (char *) &m.mmw_fee_ctrl - (char *) &m, + (unsigned char *) &m.mmw_fee_ctrl, 2); + + /* Wait until the download is finished. */ + } + /* if 2.00 card */ +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: <-wv_mmc_init()\n", dev->name); +#endif + return 0; +} + +/*------------------------------------------------------------------*/ +/* + * Construct the fd and rbd structures. + * Start the receive unit. + * (called by wv_hw_reset()) + */ +static int wv_ru_start(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + u16 scb_cs; + fd_t fd; + rbd_t rbd; + u16 rx; + u16 rx_next; + int i; + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: ->wv_ru_start()\n", dev->name); +#endif + + obram_read(ioaddr, scboff(OFFSET_SCB, scb_status), + (unsigned char *) &scb_cs, sizeof(scb_cs)); + if ((scb_cs & SCB_ST_RUS) == SCB_ST_RUS_RDY) + return 0; + + lp->rx_head = OFFSET_RU; + + for (i = 0, rx = lp->rx_head; i < NRXBLOCKS; i++, rx = rx_next) { + rx_next = + (i == NRXBLOCKS - 1) ? lp->rx_head : rx + RXBLOCKZ; + + fd.fd_status = 0; + fd.fd_command = (i == NRXBLOCKS - 1) ? FD_COMMAND_EL : 0; + fd.fd_link_offset = rx_next; + fd.fd_rbd_offset = rx + sizeof(fd); + obram_write(ioaddr, rx, (unsigned char *) &fd, sizeof(fd)); + + rbd.rbd_status = 0; + rbd.rbd_next_rbd_offset = I82586NULL; + rbd.rbd_bufl = rx + sizeof(fd) + sizeof(rbd); + rbd.rbd_bufh = 0; + rbd.rbd_el_size = RBD_EL | (RBD_SIZE & MAXDATAZ); + obram_write(ioaddr, rx + sizeof(fd), + (unsigned char *) &rbd, sizeof(rbd)); + + lp->rx_last = rx; + } + + obram_write(ioaddr, scboff(OFFSET_SCB, scb_rfa_offset), + (unsigned char *) &lp->rx_head, sizeof(lp->rx_head)); + + scb_cs = SCB_CMD_RUC_GO; + obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), + (unsigned char *) &scb_cs, sizeof(scb_cs)); + + set_chan_attn(ioaddr, lp->hacr); + + for (i = 1000; i > 0; i--) { + obram_read(ioaddr, scboff(OFFSET_SCB, scb_command), + (unsigned char *) &scb_cs, sizeof(scb_cs)); + if (scb_cs == 0) + break; + + udelay(10); + } + + if (i <= 0) { +#ifdef DEBUG_CONFIG_ERROR + printk(KERN_INFO + "%s: wavelan_ru_start(): board not accepting command.\n", + dev->name); +#endif + return -1; + } +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: <-wv_ru_start()\n", dev->name); +#endif + return 0; +} + +/*------------------------------------------------------------------*/ +/* + * Initialise the transmit blocks. + * Start the command unit executing the NOP + * self-loop of the first transmit block. + * + * Here we create the list of send buffers used to transmit packets + * between the PC and the command unit. For each buffer, we create a + * buffer descriptor (pointing on the buffer), a transmit command + * (pointing to the buffer descriptor) and a NOP command. + * The transmit command is linked to the NOP, and the NOP to itself. + * When we will have finished executing the transmit command, we will + * then loop on the NOP. By releasing the NOP link to a new command, + * we may send another buffer. + * + * (called by wv_hw_reset()) + */ +static int wv_cu_start(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + int i; + u16 txblock; + u16 first_nop; + u16 scb_cs; + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: ->wv_cu_start()\n", dev->name); +#endif + + lp->tx_first_free = OFFSET_CU; + lp->tx_first_in_use = I82586NULL; + + for (i = 0, txblock = OFFSET_CU; + i < NTXBLOCKS; i++, txblock += TXBLOCKZ) { + ac_tx_t tx; + ac_nop_t nop; + tbd_t tbd; + unsigned short tx_addr; + unsigned short nop_addr; + unsigned short tbd_addr; + unsigned short buf_addr; + + tx_addr = txblock; + nop_addr = tx_addr + sizeof(tx); + tbd_addr = nop_addr + sizeof(nop); + buf_addr = tbd_addr + sizeof(tbd); + + tx.tx_h.ac_status = 0; + tx.tx_h.ac_command = acmd_transmit | AC_CFLD_I; + tx.tx_h.ac_link = nop_addr; + tx.tx_tbd_offset = tbd_addr; + obram_write(ioaddr, tx_addr, (unsigned char *) &tx, + sizeof(tx)); + + nop.nop_h.ac_status = 0; + nop.nop_h.ac_command = acmd_nop; + nop.nop_h.ac_link = nop_addr; + obram_write(ioaddr, nop_addr, (unsigned char *) &nop, + sizeof(nop)); + + tbd.tbd_status = TBD_STATUS_EOF; + tbd.tbd_next_bd_offset = I82586NULL; + tbd.tbd_bufl = buf_addr; + tbd.tbd_bufh = 0; + obram_write(ioaddr, tbd_addr, (unsigned char *) &tbd, + sizeof(tbd)); + } + + first_nop = + OFFSET_CU + (NTXBLOCKS - 1) * TXBLOCKZ + sizeof(ac_tx_t); + obram_write(ioaddr, scboff(OFFSET_SCB, scb_cbl_offset), + (unsigned char *) &first_nop, sizeof(first_nop)); + + scb_cs = SCB_CMD_CUC_GO; + obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), + (unsigned char *) &scb_cs, sizeof(scb_cs)); + + set_chan_attn(ioaddr, lp->hacr); + + for (i = 1000; i > 0; i--) { + obram_read(ioaddr, scboff(OFFSET_SCB, scb_command), + (unsigned char *) &scb_cs, sizeof(scb_cs)); + if (scb_cs == 0) + break; + + udelay(10); + } + + if (i <= 0) { +#ifdef DEBUG_CONFIG_ERROR + printk(KERN_INFO + "%s: wavelan_cu_start(): board not accepting command.\n", + dev->name); +#endif + return -1; + } + + lp->tx_n_in_use = 0; + netif_start_queue(dev); +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: <-wv_cu_start()\n", dev->name); +#endif + return 0; +} + +/*------------------------------------------------------------------*/ +/* + * This routine does a standard configuration of the WaveLAN + * controller (i82586). + * + * It initialises the scp, iscp and scb structure + * The first two are just pointers to the next. + * The last one is used for basic configuration and for basic + * communication (interrupt status). + * + * (called by wv_hw_reset()) + */ +static int wv_82586_start(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + scp_t scp; /* system configuration pointer */ + iscp_t iscp; /* intermediate scp */ + scb_t scb; /* system control block */ + ach_t cb; /* Action command header */ + u8 zeroes[512]; + int i; + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: ->wv_82586_start()\n", dev->name); +#endif + + /* + * Clear the onboard RAM. + */ + memset(&zeroes[0], 0x00, sizeof(zeroes)); + for (i = 0; i < I82586_MEMZ; i += sizeof(zeroes)) + obram_write(ioaddr, i, &zeroes[0], sizeof(zeroes)); + + /* + * Construct the command unit structures: + * scp, iscp, scb, cb. + */ + memset(&scp, 0x00, sizeof(scp)); + scp.scp_sysbus = SCP_SY_16BBUS; + scp.scp_iscpl = OFFSET_ISCP; + obram_write(ioaddr, OFFSET_SCP, (unsigned char *) &scp, + sizeof(scp)); + + memset(&iscp, 0x00, sizeof(iscp)); + iscp.iscp_busy = 1; + iscp.iscp_offset = OFFSET_SCB; + obram_write(ioaddr, OFFSET_ISCP, (unsigned char *) &iscp, + sizeof(iscp)); + + /* Our first command is to reset the i82586. */ + memset(&scb, 0x00, sizeof(scb)); + scb.scb_command = SCB_CMD_RESET; + scb.scb_cbl_offset = OFFSET_CU; + scb.scb_rfa_offset = OFFSET_RU; + obram_write(ioaddr, OFFSET_SCB, (unsigned char *) &scb, + sizeof(scb)); + + set_chan_attn(ioaddr, lp->hacr); + + /* Wait for command to finish. */ + for (i = 1000; i > 0; i--) { + obram_read(ioaddr, OFFSET_ISCP, (unsigned char *) &iscp, + sizeof(iscp)); + + if (iscp.iscp_busy == (unsigned short) 0) + break; + + udelay(10); + } + + if (i <= 0) { +#ifdef DEBUG_CONFIG_ERROR + printk(KERN_INFO + "%s: wv_82586_start(): iscp_busy timeout.\n", + dev->name); +#endif + return -1; + } + + /* Check command completion. */ + for (i = 15; i > 0; i--) { + obram_read(ioaddr, OFFSET_SCB, (unsigned char *) &scb, + sizeof(scb)); + + if (scb.scb_status == (SCB_ST_CX | SCB_ST_CNA)) + break; + + udelay(10); + } + + if (i <= 0) { +#ifdef DEBUG_CONFIG_ERROR + printk(KERN_INFO + "%s: wv_82586_start(): status: expected 0x%02x, got 0x%02x.\n", + dev->name, SCB_ST_CX | SCB_ST_CNA, scb.scb_status); +#endif + return -1; + } + + wv_ack(dev); + + /* Set the action command header. */ + memset(&cb, 0x00, sizeof(cb)); + cb.ac_command = AC_CFLD_EL | (AC_CFLD_CMD & acmd_diagnose); + cb.ac_link = OFFSET_CU; + obram_write(ioaddr, OFFSET_CU, (unsigned char *) &cb, sizeof(cb)); + + if (wv_synchronous_cmd(dev, "diag()") == -1) + return -1; + + obram_read(ioaddr, OFFSET_CU, (unsigned char *) &cb, sizeof(cb)); + if (cb.ac_status & AC_SFLD_FAIL) { +#ifdef DEBUG_CONFIG_ERROR + printk(KERN_INFO + "%s: wv_82586_start(): i82586 Self Test failed.\n", + dev->name); +#endif + return -1; + } +#ifdef DEBUG_I82586_SHOW + wv_scb_show(ioaddr); +#endif + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: <-wv_82586_start()\n", dev->name); +#endif + return 0; +} + +/*------------------------------------------------------------------*/ +/* + * This routine does a standard configuration of the WaveLAN + * controller (i82586). + * + * This routine is a violent hack. We use the first free transmit block + * to make our configuration. In the buffer area, we create the three + * configuration commands (linked). We make the previous NOP point to + * the beginning of the buffer instead of the tx command. After, we go + * as usual to the NOP command. + * Note that only the last command (mc_set) will generate an interrupt. + * + * (called by wv_hw_reset(), wv_82586_reconfig(), wavelan_packet_xmit()) + */ +static void wv_82586_config(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + unsigned short txblock; + unsigned short txpred; + unsigned short tx_addr; + unsigned short nop_addr; + unsigned short tbd_addr; + unsigned short cfg_addr; + unsigned short ias_addr; + unsigned short mcs_addr; + ac_tx_t tx; + ac_nop_t nop; + ac_cfg_t cfg; /* Configure action */ + ac_ias_t ias; /* IA-setup action */ + ac_mcs_t mcs; /* Multicast setup */ + struct dev_mc_list *dmi; + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: ->wv_82586_config()\n", dev->name); +#endif + + /* Check nothing bad has happened */ + if (lp->tx_n_in_use == (NTXBLOCKS - 1)) { +#ifdef DEBUG_CONFIG_ERROR + printk(KERN_INFO "%s: wv_82586_config(): Tx queue full.\n", + dev->name); +#endif + return; + } + + /* Calculate addresses of next block and previous block. */ + txblock = lp->tx_first_free; + txpred = txblock - TXBLOCKZ; + if (txpred < OFFSET_CU) + txpred += NTXBLOCKS * TXBLOCKZ; + lp->tx_first_free += TXBLOCKZ; + if (lp->tx_first_free >= OFFSET_CU + NTXBLOCKS * TXBLOCKZ) + lp->tx_first_free -= NTXBLOCKS * TXBLOCKZ; + + lp->tx_n_in_use++; + + /* Calculate addresses of the different parts of the block. */ + tx_addr = txblock; + nop_addr = tx_addr + sizeof(tx); + tbd_addr = nop_addr + sizeof(nop); + cfg_addr = tbd_addr + sizeof(tbd_t); /* beginning of the buffer */ + ias_addr = cfg_addr + sizeof(cfg); + mcs_addr = ias_addr + sizeof(ias); + + /* + * Transmit command + */ + tx.tx_h.ac_status = 0xFFFF; /* Fake completion value */ + obram_write(ioaddr, toff(ac_tx_t, tx_addr, tx_h.ac_status), + (unsigned char *) &tx.tx_h.ac_status, + sizeof(tx.tx_h.ac_status)); + + /* + * NOP command + */ + nop.nop_h.ac_status = 0; + obram_write(ioaddr, toff(ac_nop_t, nop_addr, nop_h.ac_status), + (unsigned char *) &nop.nop_h.ac_status, + sizeof(nop.nop_h.ac_status)); + nop.nop_h.ac_link = nop_addr; + obram_write(ioaddr, toff(ac_nop_t, nop_addr, nop_h.ac_link), + (unsigned char *) &nop.nop_h.ac_link, + sizeof(nop.nop_h.ac_link)); + + /* Create a configure action. */ + memset(&cfg, 0x00, sizeof(cfg)); + + /* + * For Linux we invert AC_CFG_ALOC() so as to conform + * to the way that net packets reach us from above. + * (See also ac_tx_t.) + * + * Updated from Wavelan Manual WCIN085B + */ + cfg.cfg_byte_cnt = + AC_CFG_BYTE_CNT(sizeof(ac_cfg_t) - sizeof(ach_t)); + cfg.cfg_fifolim = AC_CFG_FIFOLIM(4); + cfg.cfg_byte8 = AC_CFG_SAV_BF(1) | AC_CFG_SRDY(0); + cfg.cfg_byte9 = AC_CFG_ELPBCK(0) | + AC_CFG_ILPBCK(0) | + AC_CFG_PRELEN(AC_CFG_PLEN_2) | + AC_CFG_ALOC(1) | AC_CFG_ADDRLEN(WAVELAN_ADDR_SIZE); + cfg.cfg_byte10 = AC_CFG_BOFMET(1) | + AC_CFG_ACR(6) | AC_CFG_LINPRIO(0); + cfg.cfg_ifs = 0x20; + cfg.cfg_slotl = 0x0C; + cfg.cfg_byte13 = AC_CFG_RETRYNUM(15) | AC_CFG_SLTTMHI(0); + cfg.cfg_byte14 = AC_CFG_FLGPAD(0) | + AC_CFG_BTSTF(0) | + AC_CFG_CRC16(0) | + AC_CFG_NCRC(0) | + AC_CFG_TNCRS(1) | + AC_CFG_MANCH(0) | + AC_CFG_BCDIS(0) | AC_CFG_PRM(lp->promiscuous); + cfg.cfg_byte15 = AC_CFG_ICDS(0) | + AC_CFG_CDTF(0) | AC_CFG_ICSS(0) | AC_CFG_CSTF(0); +/* + cfg.cfg_min_frm_len = AC_CFG_MNFRM(64); +*/ + cfg.cfg_min_frm_len = AC_CFG_MNFRM(8); + + cfg.cfg_h.ac_command = (AC_CFLD_CMD & acmd_configure); + cfg.cfg_h.ac_link = ias_addr; + obram_write(ioaddr, cfg_addr, (unsigned char *) &cfg, sizeof(cfg)); + + /* Set up the MAC address */ + memset(&ias, 0x00, sizeof(ias)); + ias.ias_h.ac_command = (AC_CFLD_CMD & acmd_ia_setup); + ias.ias_h.ac_link = mcs_addr; + memcpy(&ias.ias_addr[0], (unsigned char *) &dev->dev_addr[0], + sizeof(ias.ias_addr)); + obram_write(ioaddr, ias_addr, (unsigned char *) &ias, sizeof(ias)); + + /* Initialize adapter's Ethernet multicast addresses */ + memset(&mcs, 0x00, sizeof(mcs)); + mcs.mcs_h.ac_command = AC_CFLD_I | (AC_CFLD_CMD & acmd_mc_setup); + mcs.mcs_h.ac_link = nop_addr; + mcs.mcs_cnt = WAVELAN_ADDR_SIZE * lp->mc_count; + obram_write(ioaddr, mcs_addr, (unsigned char *) &mcs, sizeof(mcs)); + + /* Any address to set? */ + if (lp->mc_count) { + for (dmi = dev->mc_list; dmi; dmi = dmi->next) + outsw(PIOP1(ioaddr), (u16 *) dmi->dmi_addr, + WAVELAN_ADDR_SIZE >> 1); + +#ifdef DEBUG_CONFIG_INFO + printk(KERN_DEBUG + "%s: wv_82586_config(): set %d multicast addresses:\n", + dev->name, lp->mc_count); + for (dmi = dev->mc_list; dmi; dmi = dmi->next) + printk(KERN_DEBUG " %pM\n", dmi->dmi_addr); +#endif + } + + /* + * Overwrite the predecessor NOP link + * so that it points to the configure action. + */ + nop_addr = txpred + sizeof(tx); + nop.nop_h.ac_status = 0; + obram_write(ioaddr, toff(ac_nop_t, nop_addr, nop_h.ac_status), + (unsigned char *) &nop.nop_h.ac_status, + sizeof(nop.nop_h.ac_status)); + nop.nop_h.ac_link = cfg_addr; + obram_write(ioaddr, toff(ac_nop_t, nop_addr, nop_h.ac_link), + (unsigned char *) &nop.nop_h.ac_link, + sizeof(nop.nop_h.ac_link)); + + /* Job done, clear the flag */ + lp->reconfig_82586 = 0; + + if (lp->tx_first_in_use == I82586NULL) + lp->tx_first_in_use = txblock; + + if (lp->tx_n_in_use == (NTXBLOCKS - 1)) + netif_stop_queue(dev); + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: <-wv_82586_config()\n", dev->name); +#endif +} + +/*------------------------------------------------------------------*/ +/* + * This routine, called by wavelan_close(), gracefully stops the + * WaveLAN controller (i82586). + * (called by wavelan_close()) + */ +static void wv_82586_stop(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + u16 scb_cmd; + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: ->wv_82586_stop()\n", dev->name); +#endif + + /* Suspend both command unit and receive unit. */ + scb_cmd = + (SCB_CMD_CUC & SCB_CMD_CUC_SUS) | (SCB_CMD_RUC & + SCB_CMD_RUC_SUS); + obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), + (unsigned char *) &scb_cmd, sizeof(scb_cmd)); + set_chan_attn(ioaddr, lp->hacr); + + /* No more interrupts */ + wv_ints_off(dev); + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: <-wv_82586_stop()\n", dev->name); +#endif +} + +/*------------------------------------------------------------------*/ +/* + * Totally reset the WaveLAN and restart it. + * Performs the following actions: + * 1. A power reset (reset DMA) + * 2. Initialize the radio modem (using wv_mmc_init) + * 3. Reset & Configure LAN controller (using wv_82586_start) + * 4. Start the LAN controller's command unit + * 5. Start the LAN controller's receive unit + * (called by wavelan_interrupt(), wavelan_watchdog() & wavelan_open()) + */ +static int wv_hw_reset(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + unsigned long ioaddr = dev->base_addr; + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: ->wv_hw_reset(dev=0x%x)\n", dev->name, + (unsigned int) dev); +#endif + + /* Increase the number of resets done. */ + lp->nresets++; + + wv_hacr_reset(ioaddr); + lp->hacr = HACR_DEFAULT; + + if ((wv_mmc_init(dev) < 0) || (wv_82586_start(dev) < 0)) + return -1; + + /* Enable the card to send interrupts. */ + wv_ints_on(dev); + + /* Start card functions */ + if (wv_cu_start(dev) < 0) + return -1; + + /* Setup the controller and parameters */ + wv_82586_config(dev); + + /* Finish configuration with the receive unit */ + if (wv_ru_start(dev) < 0) + return -1; + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: <-wv_hw_reset()\n", dev->name); +#endif + return 0; +} + +/*------------------------------------------------------------------*/ +/* + * Check if there is a WaveLAN at the specific base address. + * As a side effect, this reads the MAC address. + * (called in wavelan_probe() and init_module()) + */ +static int wv_check_ioaddr(unsigned long ioaddr, u8 * mac) +{ + int i; /* Loop counter */ + + /* Check if the base address if available. */ + if (!request_region(ioaddr, sizeof(ha_t), "wavelan probe")) + return -EBUSY; /* ioaddr already used */ + + /* Reset host interface */ + wv_hacr_reset(ioaddr); + + /* Read the MAC address from the parameter storage area. */ + psa_read(ioaddr, HACR_DEFAULT, psaoff(0, psa_univ_mac_addr), + mac, 6); + + release_region(ioaddr, sizeof(ha_t)); + + /* + * Check the first three octets of the address for the manufacturer's code. + * Note: if this can't find your WaveLAN card, you've got a + * non-NCR/AT&T/Lucent ISA card. See wavelan.p.h for detail on + * how to configure your card. + */ + for (i = 0; i < ARRAY_SIZE(MAC_ADDRESSES); i++) + if ((mac[0] == MAC_ADDRESSES[i][0]) && + (mac[1] == MAC_ADDRESSES[i][1]) && + (mac[2] == MAC_ADDRESSES[i][2])) + return 0; + +#ifdef DEBUG_CONFIG_INFO + printk(KERN_WARNING + "WaveLAN (0x%3X): your MAC address might be %02X:%02X:%02X.\n", + ioaddr, mac[0], mac[1], mac[2]); +#endif + return -ENODEV; +} + +/************************ INTERRUPT HANDLING ************************/ + +/* + * This function is the interrupt handler for the WaveLAN card. This + * routine will be called whenever: + */ +static irqreturn_t wavelan_interrupt(int irq, void *dev_id) +{ + struct net_device *dev; + unsigned long ioaddr; + net_local *lp; + u16 hasr; + u16 status; + u16 ack_cmd; + + dev = dev_id; + +#ifdef DEBUG_INTERRUPT_TRACE + printk(KERN_DEBUG "%s: ->wavelan_interrupt()\n", dev->name); +#endif + + lp = netdev_priv(dev); + ioaddr = dev->base_addr; + +#ifdef DEBUG_INTERRUPT_INFO + /* Check state of our spinlock */ + if(spin_is_locked(&lp->spinlock)) + printk(KERN_DEBUG + "%s: wavelan_interrupt(): spinlock is already locked !!!\n", + dev->name); +#endif + + /* Prevent reentrancy. We need to do that because we may have + * multiple interrupt handler running concurrently. + * It is safe because interrupts are disabled before acquiring + * the spinlock. */ + spin_lock(&lp->spinlock); + + /* We always had spurious interrupts at startup, but lately I + * saw them comming *between* the request_irq() and the + * spin_lock_irqsave() in wavelan_open(), so the spinlock + * protection is no enough. + * So, we also check lp->hacr that will tell us is we enabled + * irqs or not (see wv_ints_on()). + * We can't use netif_running(dev) because we depend on the + * proper processing of the irq generated during the config. */ + + /* Which interrupt it is ? */ + hasr = hasr_read(ioaddr); + +#ifdef DEBUG_INTERRUPT_INFO + printk(KERN_INFO + "%s: wavelan_interrupt(): hasr 0x%04x; hacr 0x%04x.\n", + dev->name, hasr, lp->hacr); +#endif + + /* Check modem interrupt */ + if ((hasr & HASR_MMC_INTR) && (lp->hacr & HACR_MMC_INT_ENABLE)) { + u8 dce_status; + + /* + * Interrupt from the modem management controller. + * This will clear it -- ignored for now. + */ + mmc_read(ioaddr, mmroff(0, mmr_dce_status), &dce_status, + sizeof(dce_status)); + +#ifdef DEBUG_INTERRUPT_ERROR + printk(KERN_INFO + "%s: wavelan_interrupt(): unexpected mmc interrupt: status 0x%04x.\n", + dev->name, dce_status); +#endif + } + + /* Check if not controller interrupt */ + if (((hasr & HASR_82586_INTR) == 0) || + ((lp->hacr & HACR_82586_INT_ENABLE) == 0)) { +#ifdef DEBUG_INTERRUPT_ERROR + printk(KERN_INFO + "%s: wavelan_interrupt(): interrupt not coming from i82586 - hasr 0x%04x.\n", + dev->name, hasr); +#endif + spin_unlock (&lp->spinlock); + return IRQ_NONE; + } + + /* Read interrupt data. */ + obram_read(ioaddr, scboff(OFFSET_SCB, scb_status), + (unsigned char *) &status, sizeof(status)); + + /* + * Acknowledge the interrupt(s). + */ + ack_cmd = status & SCB_ST_INT; + obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), + (unsigned char *) &ack_cmd, sizeof(ack_cmd)); + set_chan_attn(ioaddr, lp->hacr); + +#ifdef DEBUG_INTERRUPT_INFO + printk(KERN_DEBUG "%s: wavelan_interrupt(): status 0x%04x.\n", + dev->name, status); +#endif + + /* Command completed. */ + if ((status & SCB_ST_CX) == SCB_ST_CX) { +#ifdef DEBUG_INTERRUPT_INFO + printk(KERN_DEBUG + "%s: wavelan_interrupt(): command completed.\n", + dev->name); +#endif + wv_complete(dev, ioaddr, lp); + } + + /* Frame received. */ + if ((status & SCB_ST_FR) == SCB_ST_FR) { +#ifdef DEBUG_INTERRUPT_INFO + printk(KERN_DEBUG + "%s: wavelan_interrupt(): received packet.\n", + dev->name); +#endif + wv_receive(dev); + } + + /* Check the state of the command unit. */ + if (((status & SCB_ST_CNA) == SCB_ST_CNA) || + (((status & SCB_ST_CUS) != SCB_ST_CUS_ACTV) && + (netif_running(dev)))) { +#ifdef DEBUG_INTERRUPT_ERROR + printk(KERN_INFO + "%s: wavelan_interrupt(): CU inactive -- restarting\n", + dev->name); +#endif + wv_hw_reset(dev); + } + + /* Check the state of the command unit. */ + if (((status & SCB_ST_RNR) == SCB_ST_RNR) || + (((status & SCB_ST_RUS) != SCB_ST_RUS_RDY) && + (netif_running(dev)))) { +#ifdef DEBUG_INTERRUPT_ERROR + printk(KERN_INFO + "%s: wavelan_interrupt(): RU not ready -- restarting\n", + dev->name); +#endif + wv_hw_reset(dev); + } + + /* Release spinlock */ + spin_unlock (&lp->spinlock); + +#ifdef DEBUG_INTERRUPT_TRACE + printk(KERN_DEBUG "%s: <-wavelan_interrupt()\n", dev->name); +#endif + return IRQ_HANDLED; +} + +/*------------------------------------------------------------------*/ +/* + * Watchdog: when we start a transmission, a timer is set for us in the + * kernel. If the transmission completes, this timer is disabled. If + * the timer expires, we are called and we try to unlock the hardware. + */ +static void wavelan_watchdog(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + u_long ioaddr = dev->base_addr; + unsigned long flags; + unsigned int nreaped; + +#ifdef DEBUG_INTERRUPT_TRACE + printk(KERN_DEBUG "%s: ->wavelan_watchdog()\n", dev->name); +#endif + +#ifdef DEBUG_INTERRUPT_ERROR + printk(KERN_INFO "%s: wavelan_watchdog: watchdog timer expired\n", + dev->name); +#endif + + /* Check that we came here for something */ + if (lp->tx_n_in_use <= 0) { + return; + } + + spin_lock_irqsave(&lp->spinlock, flags); + + /* Try to see if some buffers are not free (in case we missed + * an interrupt */ + nreaped = wv_complete(dev, ioaddr, lp); + +#ifdef DEBUG_INTERRUPT_INFO + printk(KERN_DEBUG + "%s: wavelan_watchdog(): %d reaped, %d remain.\n", + dev->name, nreaped, lp->tx_n_in_use); +#endif + +#ifdef DEBUG_PSA_SHOW + { + psa_t psa; + psa_read(dev, 0, (unsigned char *) &psa, sizeof(psa)); + wv_psa_show(&psa); + } +#endif +#ifdef DEBUG_MMC_SHOW + wv_mmc_show(dev); +#endif +#ifdef DEBUG_I82586_SHOW + wv_cu_show(dev); +#endif + + /* If no buffer has been freed */ + if (nreaped == 0) { +#ifdef DEBUG_INTERRUPT_ERROR + printk(KERN_INFO + "%s: wavelan_watchdog(): cleanup failed, trying reset\n", + dev->name); +#endif + wv_hw_reset(dev); + } + + /* At this point, we should have some free Tx buffer ;-) */ + if (lp->tx_n_in_use < NTXBLOCKS - 1) + netif_wake_queue(dev); + + spin_unlock_irqrestore(&lp->spinlock, flags); + +#ifdef DEBUG_INTERRUPT_TRACE + printk(KERN_DEBUG "%s: <-wavelan_watchdog()\n", dev->name); +#endif +} + +/********************* CONFIGURATION CALLBACKS *********************/ +/* + * Here are the functions called by the Linux networking code (NET3) + * for initialization, configuration and deinstallations of the + * WaveLAN ISA hardware. + */ + +/*------------------------------------------------------------------*/ +/* + * Configure and start up the WaveLAN PCMCIA adaptor. + * Called by NET3 when it "opens" the device. + */ +static int wavelan_open(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + unsigned long flags; + +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG "%s: ->wavelan_open(dev=0x%x)\n", dev->name, + (unsigned int) dev); +#endif + + /* Check irq */ + if (dev->irq == 0) { +#ifdef DEBUG_CONFIG_ERROR + printk(KERN_WARNING "%s: wavelan_open(): no IRQ\n", + dev->name); +#endif + return -ENXIO; + } + + if (request_irq(dev->irq, &wavelan_interrupt, 0, "WaveLAN", dev) != 0) + { +#ifdef DEBUG_CONFIG_ERROR + printk(KERN_WARNING "%s: wavelan_open(): invalid IRQ\n", + dev->name); +#endif + return -EAGAIN; + } + + spin_lock_irqsave(&lp->spinlock, flags); + + if (wv_hw_reset(dev) != -1) { + netif_start_queue(dev); + } else { + free_irq(dev->irq, dev); +#ifdef DEBUG_CONFIG_ERROR + printk(KERN_INFO + "%s: wavelan_open(): impossible to start the card\n", + dev->name); +#endif + spin_unlock_irqrestore(&lp->spinlock, flags); + return -EAGAIN; + } + spin_unlock_irqrestore(&lp->spinlock, flags); + +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG "%s: <-wavelan_open()\n", dev->name); +#endif + return 0; +} + +/*------------------------------------------------------------------*/ +/* + * Shut down the WaveLAN ISA card. + * Called by NET3 when it "closes" the device. + */ +static int wavelan_close(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + unsigned long flags; + +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG "%s: ->wavelan_close(dev=0x%x)\n", dev->name, + (unsigned int) dev); +#endif + + netif_stop_queue(dev); + + /* + * Flush the Tx and disable Rx. + */ + spin_lock_irqsave(&lp->spinlock, flags); + wv_82586_stop(dev); + spin_unlock_irqrestore(&lp->spinlock, flags); + + free_irq(dev->irq, dev); + +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG "%s: <-wavelan_close()\n", dev->name); +#endif + return 0; +} + +static const struct net_device_ops wavelan_netdev_ops = { + .ndo_open = wavelan_open, + .ndo_stop = wavelan_close, + .ndo_start_xmit = wavelan_packet_xmit, + .ndo_set_multicast_list = wavelan_set_multicast_list, + .ndo_tx_timeout = wavelan_watchdog, + .ndo_change_mtu = eth_change_mtu, + .ndo_validate_addr = eth_validate_addr, +#ifdef SET_MAC_ADDRESS + .ndo_set_mac_address = wavelan_set_mac_address +#else + .ndo_set_mac_address = eth_mac_addr, +#endif +}; + + +/*------------------------------------------------------------------*/ +/* + * Probe an I/O address, and if the WaveLAN is there configure the + * device structure + * (called by wavelan_probe() and via init_module()). + */ +static int __init wavelan_config(struct net_device *dev, unsigned short ioaddr) +{ + u8 irq_mask; + int irq; + net_local *lp; + mac_addr mac; + int err; + + if (!request_region(ioaddr, sizeof(ha_t), "wavelan")) + return -EADDRINUSE; + + err = wv_check_ioaddr(ioaddr, mac); + if (err) + goto out; + + memcpy(dev->dev_addr, mac, 6); + + dev->base_addr = ioaddr; + +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG "%s: ->wavelan_config(dev=0x%x, ioaddr=0x%lx)\n", + dev->name, (unsigned int) dev, ioaddr); +#endif + + /* Check IRQ argument on command line. */ + if (dev->irq != 0) { + irq_mask = wv_irq_to_psa(dev->irq); + + if (irq_mask == 0) { +#ifdef DEBUG_CONFIG_ERROR + printk(KERN_WARNING + "%s: wavelan_config(): invalid IRQ %d ignored.\n", + dev->name, dev->irq); +#endif + dev->irq = 0; + } else { +#ifdef DEBUG_CONFIG_INFO + printk(KERN_DEBUG + "%s: wavelan_config(): changing IRQ to %d\n", + dev->name, dev->irq); +#endif + psa_write(ioaddr, HACR_DEFAULT, + psaoff(0, psa_int_req_no), &irq_mask, 1); + /* update the Wavelan checksum */ + update_psa_checksum(dev, ioaddr, HACR_DEFAULT); + wv_hacr_reset(ioaddr); + } + } + + psa_read(ioaddr, HACR_DEFAULT, psaoff(0, psa_int_req_no), + &irq_mask, 1); + if ((irq = wv_psa_to_irq(irq_mask)) == -1) { +#ifdef DEBUG_CONFIG_ERROR + printk(KERN_INFO + "%s: wavelan_config(): could not wavelan_map_irq(%d).\n", + dev->name, irq_mask); +#endif + err = -EAGAIN; + goto out; + } + + dev->irq = irq; + + dev->mem_start = 0x0000; + dev->mem_end = 0x0000; + dev->if_port = 0; + + /* Initialize device structures */ + memset(netdev_priv(dev), 0, sizeof(net_local)); + lp = netdev_priv(dev); + + /* Back link to the device structure. */ + lp->dev = dev; + /* Add the device at the beginning of the linked list. */ + lp->next = wavelan_list; + wavelan_list = lp; + + lp->hacr = HACR_DEFAULT; + + /* Multicast stuff */ + lp->promiscuous = 0; + lp->mc_count = 0; + + /* Init spinlock */ + spin_lock_init(&lp->spinlock); + + dev->netdev_ops = &wavelan_netdev_ops; + dev->watchdog_timeo = WATCHDOG_JIFFIES; + dev->wireless_handlers = &wavelan_handler_def; + lp->wireless_data.spy_data = &lp->spy_data; + dev->wireless_data = &lp->wireless_data; + + dev->mtu = WAVELAN_MTU; + + /* Display nice information. */ + wv_init_info(dev); + +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG "%s: <-wavelan_config()\n", dev->name); +#endif + return 0; +out: + release_region(ioaddr, sizeof(ha_t)); + return err; +} + +/*------------------------------------------------------------------*/ +/* + * Check for a network adaptor of this type. Return '0' iff one + * exists. There seem to be different interpretations of + * the initial value of dev->base_addr. + * We follow the example in drivers/net/ne.c. + * (called in "Space.c") + */ +struct net_device * __init wavelan_probe(int unit) +{ + struct net_device *dev; + short base_addr; + int def_irq; + int i; + int r = 0; + + /* compile-time check the sizes of structures */ + BUILD_BUG_ON(sizeof(psa_t) != PSA_SIZE); + BUILD_BUG_ON(sizeof(mmw_t) != MMW_SIZE); + BUILD_BUG_ON(sizeof(mmr_t) != MMR_SIZE); + BUILD_BUG_ON(sizeof(ha_t) != HA_SIZE); + + dev = alloc_etherdev(sizeof(net_local)); + if (!dev) + return ERR_PTR(-ENOMEM); + + sprintf(dev->name, "eth%d", unit); + netdev_boot_setup_check(dev); + base_addr = dev->base_addr; + def_irq = dev->irq; + +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG + "%s: ->wavelan_probe(dev=%p (base_addr=0x%x))\n", + dev->name, dev, (unsigned int) dev->base_addr); +#endif + + /* Don't probe at all. */ + if (base_addr < 0) { +#ifdef DEBUG_CONFIG_ERROR + printk(KERN_WARNING + "%s: wavelan_probe(): invalid base address\n", + dev->name); +#endif + r = -ENXIO; + } else if (base_addr > 0x100) { /* Check a single specified location. */ + r = wavelan_config(dev, base_addr); +#ifdef DEBUG_CONFIG_INFO + if (r != 0) + printk(KERN_DEBUG + "%s: wavelan_probe(): no device at specified base address (0x%X) or address already in use\n", + dev->name, base_addr); +#endif + +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG "%s: <-wavelan_probe()\n", dev->name); +#endif + } else { /* Scan all possible addresses of the WaveLAN hardware. */ + for (i = 0; i < ARRAY_SIZE(iobase); i++) { + dev->irq = def_irq; + if (wavelan_config(dev, iobase[i]) == 0) { +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG + "%s: <-wavelan_probe()\n", + dev->name); +#endif + break; + } + } + if (i == ARRAY_SIZE(iobase)) + r = -ENODEV; + } + if (r) + goto out; + r = register_netdev(dev); + if (r) + goto out1; + return dev; +out1: + release_region(dev->base_addr, sizeof(ha_t)); + wavelan_list = wavelan_list->next; +out: + free_netdev(dev); + return ERR_PTR(r); +} + +/****************************** MODULE ******************************/ +/* + * Module entry point: insertion and removal + */ + +#ifdef MODULE +/*------------------------------------------------------------------*/ +/* + * Insertion of the module + * I'm now quite proud of the multi-device support. + */ +int __init init_module(void) +{ + int ret = -EIO; /* Return error if no cards found */ + int i; + +#ifdef DEBUG_MODULE_TRACE + printk(KERN_DEBUG "-> init_module()\n"); +#endif + + /* If probing is asked */ + if (io[0] == 0) { +#ifdef DEBUG_CONFIG_ERROR + printk(KERN_WARNING + "WaveLAN init_module(): doing device probing (bad !)\n"); + printk(KERN_WARNING + "Specify base addresses while loading module to correct the problem\n"); +#endif + + /* Copy the basic set of address to be probed. */ + for (i = 0; i < ARRAY_SIZE(iobase); i++) + io[i] = iobase[i]; + } + + + /* Loop on all possible base addresses. */ + for (i = 0; i < ARRAY_SIZE(io) && io[i] != 0; i++) { + struct net_device *dev = alloc_etherdev(sizeof(net_local)); + if (!dev) + break; + if (name[i]) + strcpy(dev->name, name[i]); /* Copy name */ + dev->base_addr = io[i]; + dev->irq = irq[i]; + + /* Check if there is something at this base address. */ + if (wavelan_config(dev, io[i]) == 0) { + if (register_netdev(dev) != 0) { + release_region(dev->base_addr, sizeof(ha_t)); + wavelan_list = wavelan_list->next; + } else { + ret = 0; + continue; + } + } + free_netdev(dev); + } + +#ifdef DEBUG_CONFIG_ERROR + if (!wavelan_list) + printk(KERN_WARNING + "WaveLAN init_module(): no device found\n"); +#endif + +#ifdef DEBUG_MODULE_TRACE + printk(KERN_DEBUG "<- init_module()\n"); +#endif + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Removal of the module + */ +void cleanup_module(void) +{ +#ifdef DEBUG_MODULE_TRACE + printk(KERN_DEBUG "-> cleanup_module()\n"); +#endif + + /* Loop on all devices and release them. */ + while (wavelan_list) { + struct net_device *dev = wavelan_list->dev; + +#ifdef DEBUG_CONFIG_INFO + printk(KERN_DEBUG + "%s: cleanup_module(): removing device at 0x%x\n", + dev->name, (unsigned int) dev); +#endif + unregister_netdev(dev); + + release_region(dev->base_addr, sizeof(ha_t)); + wavelan_list = wavelan_list->next; + + free_netdev(dev); + } + +#ifdef DEBUG_MODULE_TRACE + printk(KERN_DEBUG "<- cleanup_module()\n"); +#endif +} +#endif /* MODULE */ +MODULE_LICENSE("GPL"); + +/* + * This software may only be used and distributed + * according to the terms of the GNU General Public License. + * + * This software was developed as a component of the + * Linux operating system. + * It is based on other device drivers and information + * either written or supplied by: + * Ajay Bakre (bakre@paul.rutgers.edu), + * Donald Becker (becker@scyld.com), + * Loeke Brederveld (Loeke.Brederveld@Utrecht.NCR.com), + * Anders Klemets (klemets@it.kth.se), + * Vladimir V. Kolpakov (w@stier.koenig.ru), + * Marc Meertens (Marc.Meertens@Utrecht.NCR.com), + * Pauline Middelink (middelin@polyware.iaf.nl), + * Robert Morris (rtm@das.harvard.edu), + * Jean Tourrilhes (jt@hplb.hpl.hp.com), + * Girish Welling (welling@paul.rutgers.edu), + * + * Thanks go also to: + * James Ashton (jaa101@syseng.anu.edu.au), + * Alan Cox (alan@lxorguk.ukuu.org.uk), + * Allan Creighton (allanc@cs.usyd.edu.au), + * Matthew Geier (matthew@cs.usyd.edu.au), + * Remo di Giovanni (remo@cs.usyd.edu.au), + * Eckhard Grah (grah@wrcs1.urz.uni-wuppertal.de), + * Vipul Gupta (vgupta@cs.binghamton.edu), + * Mark Hagan (mhagan@wtcpost.daytonoh.NCR.COM), + * Tim Nicholson (tim@cs.usyd.edu.au), + * Ian Parkin (ian@cs.usyd.edu.au), + * John Rosenberg (johnr@cs.usyd.edu.au), + * George Rossi (george@phm.gov.au), + * Arthur Scott (arthur@cs.usyd.edu.au), + * Peter Storey, + * for their assistance and advice. + * + * Please send bug reports, updates, comments to: + * + * Bruce Janson Email: bruce@cs.usyd.edu.au + * Basser Department of Computer Science Phone: +61-2-9351-3423 + * University of Sydney, N.S.W., 2006, AUSTRALIA Fax: +61-2-9351-3838 + */ diff --git a/drivers/staging/wavelan/wavelan.h b/drivers/staging/wavelan/wavelan.h new file mode 100644 index 000000000000..9ab360558ffd --- /dev/null +++ b/drivers/staging/wavelan/wavelan.h @@ -0,0 +1,370 @@ +/* + * WaveLAN ISA driver + * + * Jean II - HPLB '96 + * + * Reorganisation and extension of the driver. + * Original copyright follows. See wavelan.p.h for details. + * + * This file contains the declarations for the WaveLAN hardware. Note that + * the WaveLAN ISA includes a i82586 controller (see definitions in + * file i82586.h). + * + * The main difference between the ISA hardware and the PCMCIA one is + * the Ethernet controller (i82586 instead of i82593). + * The i82586 allows multiple transmit buffers. The PSA needs to be accessed + * through the host interface. + */ + +#ifndef _WAVELAN_H +#define _WAVELAN_H + +/************************** MAGIC NUMBERS ***************************/ + +/* Detection of the WaveLAN card is done by reading the MAC + * address from the card and checking it. If you have a non-AT&T + * product (OEM, like DEC RoamAbout, Digital Ocean, or Epson), + * you might need to modify this part to accommodate your hardware. + */ +static const char MAC_ADDRESSES[][3] = +{ + { 0x08, 0x00, 0x0E }, /* AT&T WaveLAN (standard) & DEC RoamAbout */ + { 0x08, 0x00, 0x6A }, /* AT&T WaveLAN (alternate) */ + { 0x00, 0x00, 0xE1 }, /* Hitachi Wavelan */ + { 0x00, 0x60, 0x1D } /* Lucent Wavelan (another one) */ + /* Add your card here and send me the patch! */ +}; + +#define WAVELAN_ADDR_SIZE 6 /* Size of a MAC address */ + +#define WAVELAN_MTU 1500 /* Maximum size of WaveLAN packet */ + +#define MAXDATAZ (WAVELAN_ADDR_SIZE + WAVELAN_ADDR_SIZE + 2 + WAVELAN_MTU) + +/* + * Constants used to convert channels to frequencies + */ + +/* Frequency available in the 2.0 modem, in units of 250 kHz + * (as read in the offset register of the dac area). + * Used to map channel numbers used by `wfreqsel' to frequencies + */ +static const short channel_bands[] = { 0x30, 0x58, 0x64, 0x7A, 0x80, 0xA8, + 0xD0, 0xF0, 0xF8, 0x150 }; + +/* Frequencies of the 1.0 modem (fixed frequencies). + * Use to map the PSA `subband' to a frequency + * Note : all frequencies apart from the first one need to be multiplied by 10 + */ +static const int fixed_bands[] = { 915e6, 2.425e8, 2.46e8, 2.484e8, 2.4305e8 }; + + + +/*************************** PC INTERFACE ****************************/ + +/* + * Host Adaptor structure. + * (base is board port address). + */ +typedef union hacs_u hacs_u; +union hacs_u +{ + unsigned short hu_command; /* Command register */ +#define HACR_RESET 0x0001 /* Reset board */ +#define HACR_CA 0x0002 /* Set Channel Attention for 82586 */ +#define HACR_16BITS 0x0004 /* 16-bit operation (0 => 8bits) */ +#define HACR_OUT0 0x0008 /* General purpose output pin 0 */ + /* not used - must be 1 */ +#define HACR_OUT1 0x0010 /* General purpose output pin 1 */ + /* not used - must be 1 */ +#define HACR_82586_INT_ENABLE 0x0020 /* Enable 82586 interrupts */ +#define HACR_MMC_INT_ENABLE 0x0040 /* Enable MMC interrupts */ +#define HACR_INTR_CLR_ENABLE 0x0080 /* Enable interrupt status read/clear */ + unsigned short hu_status; /* Status Register */ +#define HASR_82586_INTR 0x0001 /* Interrupt request from 82586 */ +#define HASR_MMC_INTR 0x0002 /* Interrupt request from MMC */ +#define HASR_MMC_BUSY 0x0004 /* MMC busy indication */ +#define HASR_PSA_BUSY 0x0008 /* LAN parameter storage area busy */ +} __attribute__ ((packed)); + +typedef struct ha_t ha_t; +struct ha_t +{ + hacs_u ha_cs; /* Command and status registers */ +#define ha_command ha_cs.hu_command +#define ha_status ha_cs.hu_status + unsigned short ha_mmcr; /* Modem Management Ctrl Register */ + unsigned short ha_pior0; /* Program I/O Address Register Port 0 */ + unsigned short ha_piop0; /* Program I/O Port 0 */ + unsigned short ha_pior1; /* Program I/O Address Register Port 1 */ + unsigned short ha_piop1; /* Program I/O Port 1 */ + unsigned short ha_pior2; /* Program I/O Address Register Port 2 */ + unsigned short ha_piop2; /* Program I/O Port 2 */ +}; + +#define HA_SIZE 16 + +#define hoff(p,f) (unsigned short)((void *)(&((ha_t *)((void *)0 + (p)))->f) - (void *)0) +#define HACR(p) hoff(p, ha_command) +#define HASR(p) hoff(p, ha_status) +#define MMCR(p) hoff(p, ha_mmcr) +#define PIOR0(p) hoff(p, ha_pior0) +#define PIOP0(p) hoff(p, ha_piop0) +#define PIOR1(p) hoff(p, ha_pior1) +#define PIOP1(p) hoff(p, ha_piop1) +#define PIOR2(p) hoff(p, ha_pior2) +#define PIOP2(p) hoff(p, ha_piop2) + +/* + * Program I/O Mode Register values. + */ +#define STATIC_PIO 0 /* Mode 1: static mode */ + /* RAM access ??? */ +#define AUTOINCR_PIO 1 /* Mode 2: auto increment mode */ + /* RAM access ??? */ +#define AUTODECR_PIO 2 /* Mode 3: auto decrement mode */ + /* RAM access ??? */ +#define PARAM_ACCESS_PIO 3 /* Mode 4: LAN parameter access mode */ + /* Parameter access. */ +#define PIO_MASK 3 /* register mask */ +#define PIOM(cmd,piono) ((u_short)cmd << 10 << (piono * 2)) + +#define HACR_DEFAULT (HACR_OUT0 | HACR_OUT1 | HACR_16BITS | PIOM(STATIC_PIO, 0) | PIOM(AUTOINCR_PIO, 1) | PIOM(PARAM_ACCESS_PIO, 2)) +#define HACR_INTRON (HACR_82586_INT_ENABLE | HACR_MMC_INT_ENABLE | HACR_INTR_CLR_ENABLE) + +/************************** MEMORY LAYOUT **************************/ + +/* + * Onboard 64 k RAM layout. + * (Offsets from 0x0000.) + */ +#define OFFSET_RU 0x0000 /* 75% memory */ +#define OFFSET_CU 0xC000 /* 25% memory */ +#define OFFSET_SCB (OFFSET_ISCP - sizeof(scb_t)) +#define OFFSET_ISCP (OFFSET_SCP - sizeof(iscp_t)) +#define OFFSET_SCP I82586_SCP_ADDR + +#define RXBLOCKZ (sizeof(fd_t) + sizeof(rbd_t) + MAXDATAZ) +#define TXBLOCKZ (sizeof(ac_tx_t) + sizeof(ac_nop_t) + sizeof(tbd_t) + MAXDATAZ) + +#define NRXBLOCKS ((OFFSET_CU - OFFSET_RU) / RXBLOCKZ) +#define NTXBLOCKS ((OFFSET_SCB - OFFSET_CU) / TXBLOCKZ) + +/********************** PARAMETER STORAGE AREA **********************/ + +/* + * Parameter Storage Area (PSA). + */ +typedef struct psa_t psa_t; +struct psa_t +{ + unsigned char psa_io_base_addr_1; /* [0x00] Base address 1 ??? */ + unsigned char psa_io_base_addr_2; /* [0x01] Base address 2 */ + unsigned char psa_io_base_addr_3; /* [0x02] Base address 3 */ + unsigned char psa_io_base_addr_4; /* [0x03] Base address 4 */ + unsigned char psa_rem_boot_addr_1; /* [0x04] Remote Boot Address 1 */ + unsigned char psa_rem_boot_addr_2; /* [0x05] Remote Boot Address 2 */ + unsigned char psa_rem_boot_addr_3; /* [0x06] Remote Boot Address 3 */ + unsigned char psa_holi_params; /* [0x07] HOst Lan Interface (HOLI) Parameters */ + unsigned char psa_int_req_no; /* [0x08] Interrupt Request Line */ + unsigned char psa_unused0[7]; /* [0x09-0x0F] unused */ + + unsigned char psa_univ_mac_addr[WAVELAN_ADDR_SIZE]; /* [0x10-0x15] Universal (factory) MAC Address */ + unsigned char psa_local_mac_addr[WAVELAN_ADDR_SIZE]; /* [0x16-1B] Local MAC Address */ + unsigned char psa_univ_local_sel; /* [0x1C] Universal Local Selection */ +#define PSA_UNIVERSAL 0 /* Universal (factory) */ +#define PSA_LOCAL 1 /* Local */ + unsigned char psa_comp_number; /* [0x1D] Compatibility Number: */ +#define PSA_COMP_PC_AT_915 0 /* PC-AT 915 MHz */ +#define PSA_COMP_PC_MC_915 1 /* PC-MC 915 MHz */ +#define PSA_COMP_PC_AT_2400 2 /* PC-AT 2.4 GHz */ +#define PSA_COMP_PC_MC_2400 3 /* PC-MC 2.4 GHz */ +#define PSA_COMP_PCMCIA_915 4 /* PCMCIA 915 MHz or 2.0 */ + unsigned char psa_thr_pre_set; /* [0x1E] Modem Threshold Preset */ + unsigned char psa_feature_select; /* [0x1F] Call code required (1=on) */ +#define PSA_FEATURE_CALL_CODE 0x01 /* Call code required (Japan) */ + unsigned char psa_subband; /* [0x20] Subband */ +#define PSA_SUBBAND_915 0 /* 915 MHz or 2.0 */ +#define PSA_SUBBAND_2425 1 /* 2425 MHz */ +#define PSA_SUBBAND_2460 2 /* 2460 MHz */ +#define PSA_SUBBAND_2484 3 /* 2484 MHz */ +#define PSA_SUBBAND_2430_5 4 /* 2430.5 MHz */ + unsigned char psa_quality_thr; /* [0x21] Modem Quality Threshold */ + unsigned char psa_mod_delay; /* [0x22] Modem Delay (?) (reserved) */ + unsigned char psa_nwid[2]; /* [0x23-0x24] Network ID */ + unsigned char psa_nwid_select; /* [0x25] Network ID Select On/Off */ + unsigned char psa_encryption_select; /* [0x26] Encryption On/Off */ + unsigned char psa_encryption_key[8]; /* [0x27-0x2E] Encryption Key */ + unsigned char psa_databus_width; /* [0x2F] AT bus width select 8/16 */ + unsigned char psa_call_code[8]; /* [0x30-0x37] (Japan) Call Code */ + unsigned char psa_nwid_prefix[2]; /* [0x38-0x39] Roaming domain */ + unsigned char psa_reserved[2]; /* [0x3A-0x3B] Reserved - fixed 00 */ + unsigned char psa_conf_status; /* [0x3C] Conf Status, bit 0=1:config*/ + unsigned char psa_crc[2]; /* [0x3D] CRC-16 over PSA */ + unsigned char psa_crc_status; /* [0x3F] CRC Valid Flag */ +}; + +#define PSA_SIZE 64 + +/* Calculate offset of a field in the above structure. + * Warning: only even addresses are used. */ +#define psaoff(p,f) ((unsigned short) ((void *)(&((psa_t *) ((void *) NULL + (p)))->f) - (void *) NULL)) + +/******************** MODEM MANAGEMENT INTERFACE ********************/ + +/* + * Modem Management Controller (MMC) write structure. + */ +typedef struct mmw_t mmw_t; +struct mmw_t +{ + unsigned char mmw_encr_key[8]; /* encryption key */ + unsigned char mmw_encr_enable; /* Enable or disable encryption. */ +#define MMW_ENCR_ENABLE_MODE 0x02 /* mode of security option */ +#define MMW_ENCR_ENABLE_EN 0x01 /* Enable security option. */ + unsigned char mmw_unused0[1]; /* unused */ + unsigned char mmw_des_io_invert; /* encryption option */ +#define MMW_DES_IO_INVERT_RES 0x0F /* reserved */ +#define MMW_DES_IO_INVERT_CTRL 0xF0 /* control (?) (set to 0) */ + unsigned char mmw_unused1[5]; /* unused */ + unsigned char mmw_loopt_sel; /* looptest selection */ +#define MMW_LOOPT_SEL_DIS_NWID 0x40 /* Disable NWID filtering. */ +#define MMW_LOOPT_SEL_INT 0x20 /* Activate Attention Request. */ +#define MMW_LOOPT_SEL_LS 0x10 /* looptest, no collision avoidance */ +#define MMW_LOOPT_SEL_LT3A 0x08 /* looptest 3a */ +#define MMW_LOOPT_SEL_LT3B 0x04 /* looptest 3b */ +#define MMW_LOOPT_SEL_LT3C 0x02 /* looptest 3c */ +#define MMW_LOOPT_SEL_LT3D 0x01 /* looptest 3d */ + unsigned char mmw_jabber_enable; /* jabber timer enable */ + /* Abort transmissions > 200 ms */ + unsigned char mmw_freeze; /* freeze or unfreeze signal level */ + /* 0 : signal level & qual updated for every new message, 1 : frozen */ + unsigned char mmw_anten_sel; /* antenna selection */ +#define MMW_ANTEN_SEL_SEL 0x01 /* direct antenna selection */ +#define MMW_ANTEN_SEL_ALG_EN 0x02 /* antenna selection algo. enable */ + unsigned char mmw_ifs; /* inter frame spacing */ + /* min time between transmission in bit periods (.5 us) - bit 0 ignored */ + unsigned char mmw_mod_delay; /* modem delay (synchro) */ + unsigned char mmw_jam_time; /* jamming time (after collision) */ + unsigned char mmw_unused2[1]; /* unused */ + unsigned char mmw_thr_pre_set; /* level threshold preset */ + /* Discard all packet with signal < this value (4) */ + unsigned char mmw_decay_prm; /* decay parameters */ + unsigned char mmw_decay_updat_prm; /* decay update parameters */ + unsigned char mmw_quality_thr; /* quality (z-quotient) threshold */ + /* Discard all packet with quality < this value (3) */ + unsigned char mmw_netw_id_l; /* NWID low order byte */ + unsigned char mmw_netw_id_h; /* NWID high order byte */ + /* Network ID or Domain : create virtual net on the air */ + + /* 2.0 Hardware extension - frequency selection support */ + unsigned char mmw_mode_select; /* for analog tests (set to 0) */ + unsigned char mmw_unused3[1]; /* unused */ + unsigned char mmw_fee_ctrl; /* frequency EEPROM control */ +#define MMW_FEE_CTRL_PRE 0x10 /* Enable protected instructions. */ +#define MMW_FEE_CTRL_DWLD 0x08 /* Download EEPROM to mmc. */ +#define MMW_FEE_CTRL_CMD 0x07 /* EEPROM commands: */ +#define MMW_FEE_CTRL_READ 0x06 /* Read */ +#define MMW_FEE_CTRL_WREN 0x04 /* Write enable */ +#define MMW_FEE_CTRL_WRITE 0x05 /* Write data to address. */ +#define MMW_FEE_CTRL_WRALL 0x04 /* Write data to all addresses. */ +#define MMW_FEE_CTRL_WDS 0x04 /* Write disable */ +#define MMW_FEE_CTRL_PRREAD 0x16 /* Read addr from protect register */ +#define MMW_FEE_CTRL_PREN 0x14 /* Protect register enable */ +#define MMW_FEE_CTRL_PRCLEAR 0x17 /* Unprotect all registers. */ +#define MMW_FEE_CTRL_PRWRITE 0x15 /* Write address in protect register */ +#define MMW_FEE_CTRL_PRDS 0x14 /* Protect register disable */ + /* Never issue the PRDS command: it's irreversible! */ + + unsigned char mmw_fee_addr; /* EEPROM address */ +#define MMW_FEE_ADDR_CHANNEL 0xF0 /* Select the channel. */ +#define MMW_FEE_ADDR_OFFSET 0x0F /* Offset in channel data */ +#define MMW_FEE_ADDR_EN 0xC0 /* FEE_CTRL enable operations */ +#define MMW_FEE_ADDR_DS 0x00 /* FEE_CTRL disable operations */ +#define MMW_FEE_ADDR_ALL 0x40 /* FEE_CTRL all operations */ +#define MMW_FEE_ADDR_CLEAR 0xFF /* FEE_CTRL clear operations */ + + unsigned char mmw_fee_data_l; /* Write data to EEPROM. */ + unsigned char mmw_fee_data_h; /* high octet */ + unsigned char mmw_ext_ant; /* Setting for external antenna */ +#define MMW_EXT_ANT_EXTANT 0x01 /* Select external antenna */ +#define MMW_EXT_ANT_POL 0x02 /* Polarity of the antenna */ +#define MMW_EXT_ANT_INTERNAL 0x00 /* Internal antenna */ +#define MMW_EXT_ANT_EXTERNAL 0x03 /* External antenna */ +#define MMW_EXT_ANT_IQ_TEST 0x1C /* IQ test pattern (set to 0) */ +} __attribute__ ((packed)); + +#define MMW_SIZE 37 + +#define mmwoff(p,f) (unsigned short)((void *)(&((mmw_t *)((void *)0 + (p)))->f) - (void *)0) + +/* + * Modem Management Controller (MMC) read structure. + */ +typedef struct mmr_t mmr_t; +struct mmr_t +{ + unsigned char mmr_unused0[8]; /* unused */ + unsigned char mmr_des_status; /* encryption status */ + unsigned char mmr_des_avail; /* encryption available (0x55 read) */ +#define MMR_DES_AVAIL_DES 0x55 /* DES available */ +#define MMR_DES_AVAIL_AES 0x33 /* AES (AT&T) available */ + unsigned char mmr_des_io_invert; /* des I/O invert register */ + unsigned char mmr_unused1[5]; /* unused */ + unsigned char mmr_dce_status; /* DCE status */ +#define MMR_DCE_STATUS_RX_BUSY 0x01 /* receiver busy */ +#define MMR_DCE_STATUS_LOOPT_IND 0x02 /* loop test indicated */ +#define MMR_DCE_STATUS_TX_BUSY 0x04 /* transmitter on */ +#define MMR_DCE_STATUS_JBR_EXPIRED 0x08 /* jabber timer expired */ +#define MMR_DCE_STATUS 0x0F /* mask to get the bits */ + unsigned char mmr_dsp_id; /* DSP ID (AA = Daedalus rev A) */ + unsigned char mmr_unused2[2]; /* unused */ + unsigned char mmr_correct_nwid_l; /* # of correct NWIDs rxd (low) */ + unsigned char mmr_correct_nwid_h; /* # of correct NWIDs rxd (high) */ + /* Warning: read high-order octet first! */ + unsigned char mmr_wrong_nwid_l; /* # of wrong NWIDs rxd (low) */ + unsigned char mmr_wrong_nwid_h; /* # of wrong NWIDs rxd (high) */ + unsigned char mmr_thr_pre_set; /* level threshold preset */ +#define MMR_THR_PRE_SET 0x3F /* level threshold preset */ +#define MMR_THR_PRE_SET_CUR 0x80 /* Current signal above it */ + unsigned char mmr_signal_lvl; /* signal level */ +#define MMR_SIGNAL_LVL 0x3F /* signal level */ +#define MMR_SIGNAL_LVL_VALID 0x80 /* Updated since last read */ + unsigned char mmr_silence_lvl; /* silence level (noise) */ +#define MMR_SILENCE_LVL 0x3F /* silence level */ +#define MMR_SILENCE_LVL_VALID 0x80 /* Updated since last read */ + unsigned char mmr_sgnl_qual; /* signal quality */ +#define MMR_SGNL_QUAL 0x0F /* signal quality */ +#define MMR_SGNL_QUAL_ANT 0x80 /* current antenna used */ + unsigned char mmr_netw_id_l; /* NWID low order byte (?) */ + unsigned char mmr_unused3[3]; /* unused */ + + /* 2.0 Hardware extension - frequency selection support */ + unsigned char mmr_fee_status; /* Status of frequency EEPROM */ +#define MMR_FEE_STATUS_ID 0xF0 /* Modem revision ID */ +#define MMR_FEE_STATUS_DWLD 0x08 /* Download in progress */ +#define MMR_FEE_STATUS_BUSY 0x04 /* EEPROM busy */ + unsigned char mmr_unused4[1]; /* unused */ + unsigned char mmr_fee_data_l; /* Read data from EEPROM (low) */ + unsigned char mmr_fee_data_h; /* Read data from EEPROM (high) */ +} __attribute__ ((packed)); + +#define MMR_SIZE 36 + +#define mmroff(p,f) (unsigned short)((void *)(&((mmr_t *)((void *)0 + (p)))->f) - (void *)0) + +/* Make the two above structures one */ +typedef union mm_t +{ + struct mmw_t w; /* Write to the mmc */ + struct mmr_t r; /* Read from the mmc */ +} mm_t; + +#endif /* _WAVELAN_H */ + +/* + * This software may only be used and distributed + * according to the terms of the GNU General Public License. + * + * For more details, see wavelan.c. + */ diff --git a/drivers/staging/wavelan/wavelan.p.h b/drivers/staging/wavelan/wavelan.p.h new file mode 100644 index 000000000000..dbe8de6e5f52 --- /dev/null +++ b/drivers/staging/wavelan/wavelan.p.h @@ -0,0 +1,696 @@ +/* + * WaveLAN ISA driver + * + * Jean II - HPLB '96 + * + * Reorganisation and extension of the driver. + * + * This file contains all definitions and declarations necessary for the + * WaveLAN ISA driver. This file is a private header, so it should + * be included only in wavelan.c! + */ + +#ifndef WAVELAN_P_H +#define WAVELAN_P_H + +/************************** DOCUMENTATION ***************************/ +/* + * This driver provides a Linux interface to the WaveLAN ISA hardware. + * The WaveLAN is a product of Lucent (http://www.wavelan.com/). + * This division was formerly part of NCR and then AT&T. + * WaveLANs are also distributed by DEC (RoamAbout DS) and Digital Ocean. + * + * To learn how to use this driver, read the NET3 HOWTO. + * If you want to exploit the many other functionalities, read the comments + * in the code. + * + * This driver is the result of the effort of many people (see below). + */ + +/* ------------------------ SPECIFIC NOTES ------------------------ */ +/* + * Web page + * -------- + * I try to maintain a web page with the Wireless LAN Howto at : + * http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Wavelan.html + * + * SMP + * --- + * We now are SMP compliant (I eventually fixed the remaining bugs). + * The driver has been tested on a dual P6-150 and survived my usual + * set of torture tests. + * Anyway, I spent enough time chasing interrupt re-entrancy during + * errors or reconfigure, and I designed the locked/unlocked sections + * of the driver with great care, and with the recent addition of + * the spinlock (thanks to the new API), we should be quite close to + * the truth. + * The SMP/IRQ locking is quite coarse and conservative (i.e. not fast), + * but better safe than sorry (especially at 2 Mb/s ;-). + * + * I have also looked into disabling only our interrupt on the card + * (via HACR) instead of all interrupts in the processor (via cli), + * so that other driver are not impacted, and it look like it's + * possible, but it's very tricky to do right (full of races). As + * the gain would be mostly for SMP systems, it can wait... + * + * Debugging and options + * --------------------- + * You will find below a set of '#define" allowing a very fine control + * on the driver behaviour and the debug messages printed. + * The main options are : + * o SET_PSA_CRC, to have your card correctly recognised by + * an access point and the Point-to-Point diagnostic tool. + * o USE_PSA_CONFIG, to read configuration from the PSA (EEprom) + * (otherwise we always start afresh with some defaults) + * + * wavelan.o is too darned big + * --------------------------- + * That's true! There is a very simple way to reduce the driver + * object by 33%! Comment out the following line: + * #include <linux/wireless.h> + * Other compile options can also reduce the size of it... + * + * MAC address and hardware detection: + * ----------------------------------- + * The detection code for the WaveLAN checks that the first three + * octets of the MAC address fit the company code. This type of + * detection works well for AT&T cards (because the AT&T code is + * hardcoded in wavelan.h), but of course will fail for other + * manufacturers. + * + * If you are sure that your card is derived from the WaveLAN, + * here is the way to configure it: + * 1) Get your MAC address + * a) With your card utilities (wfreqsel, instconf, etc.) + * b) With the driver: + * o compile the kernel with DEBUG_CONFIG_INFO enabled + * o Boot and look the card messages + * 2) Set your MAC code (3 octets) in MAC_ADDRESSES[][3] (wavelan.h) + * 3) Compile and verify + * 4) Send me the MAC code. I will include it in the next version. + * + */ + +/* --------------------- WIRELESS EXTENSIONS --------------------- */ +/* + * This driver is the first to support "wireless extensions". + * This set of extensions provides a standard way to control the wireless + * characteristics of the hardware. Applications such as mobile IP may + * take advantage of it. + * + * It might be a good idea as well to fetch the wireless tools to + * configure the device and play a bit. + */ + +/* ---------------------------- FILES ---------------------------- */ +/* + * wavelan.c: actual code for the driver: C functions + * + * wavelan.p.h: private header: local types and variables for driver + * + * wavelan.h: description of the hardware interface and structs + * + * i82586.h: description of the Ethernet controller + */ + +/* --------------------------- HISTORY --------------------------- */ +/* + * This is based on information in the drivers' headers. It may not be + * accurate, and I guarantee only my best effort. + * + * The history of the WaveLAN drivers is as complicated as the history of + * the WaveLAN itself (NCR -> AT&T -> Lucent). + * + * It all started with Anders Klemets <klemets@paul.rutgers.edu> + * writing a WaveLAN ISA driver for the Mach microkernel. Girish + * Welling <welling@paul.rutgers.edu> had also worked on it. + * Keith Moore modified this for the PCMCIA hardware. + * + * Robert Morris <rtm@das.harvard.edu> ported these two drivers to BSDI + * and added specific PCMCIA support (there is currently no equivalent + * of the PCMCIA package under BSD). + * + * Jim Binkley <jrb@cs.pdx.edu> ported both BSDI drivers to FreeBSD. + * + * Bruce Janson <bruce@cs.usyd.edu.au> ported the BSDI ISA driver to Linux. + * + * Anthony D. Joseph <adj@lcs.mit.edu> started to modify Bruce's driver + * (with help of the BSDI PCMCIA driver) for PCMCIA. + * Yunzhou Li <yunzhou@strat.iol.unh.edu> finished this work. + * Joe Finney <joe@comp.lancs.ac.uk> patched the driver to start + * 2.00 cards correctly (2.4 GHz with frequency selection). + * David Hinds <dahinds@users.sourceforge.net> integrated the whole in his + * PCMCIA package (and bug corrections). + * + * I (Jean Tourrilhes - jt@hplb.hpl.hp.com) then started to make some + * patches to the PCMCIA driver. Later, I added code in the ISA driver + * for Wireless Extensions and full support of frequency selection + * cards. Then, I did the same to the PCMCIA driver, and did some + * reorganisation. Finally, I came back to the ISA driver to + * upgrade it at the same level as the PCMCIA one and reorganise + * the code. + * Loeke Brederveld <lbrederv@wavelan.com> from Lucent has given me + * much needed information on the WaveLAN hardware. + */ + +/* The original copyrights and literature mention others' names and + * credits. I don't know what their part in this development was. + */ + +/* By the way, for the copyright and legal stuff: + * almost everybody wrote code under the GNU or BSD license (or similar), + * and want their original copyright to remain somewhere in the + * code (for myself, I go with the GPL). + * Nobody wants to take responsibility for anything, except the fame. + */ + +/* --------------------------- CREDITS --------------------------- */ +/* + * This software was developed as a component of the + * Linux operating system. + * It is based on other device drivers and information + * either written or supplied by: + * Ajay Bakre <bakre@paul.rutgers.edu>, + * Donald Becker <becker@cesdis.gsfc.nasa.gov>, + * Loeke Brederveld <Loeke.Brederveld@Utrecht.NCR.com>, + * Brent Elphick <belphick@uwaterloo.ca>, + * Anders Klemets <klemets@it.kth.se>, + * Vladimir V. Kolpakov <w@stier.koenig.ru>, + * Marc Meertens <Marc.Meertens@Utrecht.NCR.com>, + * Pauline Middelink <middelin@polyware.iaf.nl>, + * Robert Morris <rtm@das.harvard.edu>, + * Jean Tourrilhes <jt@hpl.hp.com>, + * Girish Welling <welling@paul.rutgers.edu>, + * Clark Woodworth <clark@hiway1.exit109.com> + * Yongguang Zhang <ygz@isl.hrl.hac.com> + * + * Thanks go also to: + * James Ashton <jaa101@syseng.anu.edu.au>, + * Alan Cox <alan@lxorguk.ukuu.org.uk>, + * Allan Creighton <allanc@cs.usyd.edu.au>, + * Matthew Geier <matthew@cs.usyd.edu.au>, + * Remo di Giovanni <remo@cs.usyd.edu.au>, + * Eckhard Grah <grah@wrcs1.urz.uni-wuppertal.de>, + * Vipul Gupta <vgupta@cs.binghamton.edu>, + * Mark Hagan <mhagan@wtcpost.daytonoh.NCR.COM>, + * Tim Nicholson <tim@cs.usyd.edu.au>, + * Ian Parkin <ian@cs.usyd.edu.au>, + * John Rosenberg <johnr@cs.usyd.edu.au>, + * George Rossi <george@phm.gov.au>, + * Arthur Scott <arthur@cs.usyd.edu.au>, + * Stanislav Sinyagin <stas@isf.ru> + * and Peter Storey for their assistance and advice. + * + * Additional Credits: + * + * My development has been done initially under Debian 1.1 (Linux 2.0.x) + * and now under Debian 2.2, initially with an HP Vectra XP/60, and now + * an HP Vectra XP/90. + * + */ + +/* ------------------------- IMPROVEMENTS ------------------------- */ +/* + * I proudly present: + * + * Changes made in first pre-release: + * ---------------------------------- + * - reorganisation of the code, function name change + * - creation of private header (wavelan.p.h) + * - reorganised debug messages + * - more comments, history, etc. + * - mmc_init: configure the PSA if not done + * - mmc_init: correct default value of level threshold for PCMCIA + * - mmc_init: 2.00 detection better code for 2.00 initialization + * - better info at startup + * - IRQ setting (note: this setting is permanent) + * - watchdog: change strategy (and solve module removal problems) + * - add wireless extensions (ioctl and get_wireless_stats) + * get/set nwid/frequency on fly, info for /proc/net/wireless + * - more wireless extensions: SETSPY and GETSPY + * - make wireless extensions optional + * - private ioctl to set/get quality and level threshold, histogram + * - remove /proc/net/wavelan + * - suppress useless stuff from lp (net_local) + * - kernel 2.1 support (copy_to/from_user instead of memcpy_to/fromfs) + * - add message level (debug stuff in /var/adm/debug and errors not + * displayed at console and still in /var/adm/messages) + * - multi device support + * - start fixing the probe (init code) + * - more inlines + * - man page + * - many other minor details and cleanups + * + * Changes made in second pre-release: + * ----------------------------------- + * - clean up init code (probe and module init) + * - better multiple device support (module) + * - name assignment (module) + * + * Changes made in third pre-release: + * ---------------------------------- + * - be more conservative on timers + * - preliminary support for multicast (I still lack some details) + * + * Changes made in fourth pre-release: + * ----------------------------------- + * - multicast (revisited and finished) + * - avoid reset in set_multicast_list (a really big hack) + * if somebody could apply this code for other i82586 based drivers + * - share onboard memory 75% RU and 25% CU (instead of 50/50) + * + * Changes made for release in 2.1.15: + * ----------------------------------- + * - change the detection code for multi manufacturer code support + * + * Changes made for release in 2.1.17: + * ----------------------------------- + * - update to wireless extensions changes + * - silly bug in card initial configuration (psa_conf_status) + * + * Changes made for release in 2.1.27 & 2.0.30: + * -------------------------------------------- + * - small bug in debug code (probably not the last one...) + * - remove extern keyword for wavelan_probe() + * - level threshold is now a standard wireless extension (version 4 !) + * - modules parameters types (new module interface) + * + * Changes made for release in 2.1.36: + * ----------------------------------- + * - byte count stats (courtesy of David Hinds) + * - remove dev_tint stuff (courtesy of David Hinds) + * - encryption setting from Brent Elphick (thanks a lot!) + * - 'ioaddr' to 'u_long' for the Alpha (thanks to Stanislav Sinyagin) + * + * Other changes (not by me) : + * ------------------------- + * - Spelling and gramar "rectification". + * + * Changes made for release in 2.0.37 & 2.2.2 : + * ------------------------------------------ + * - Correct status in /proc/net/wireless + * - Set PSA CRC to make PtP diagnostic tool happy (Bob Gray) + * - Module init code don't fail if we found at least one card in + * the address list (Karlis Peisenieks) + * - Missing parenthesis (Christopher Peterson) + * - Correct i82586 configuration parameters + * - Encryption initialisation bug (Robert McCormack) + * - New mac addresses detected in the probe + * - Increase watchdog for busy environments + * + * Changes made for release in 2.0.38 & 2.2.7 : + * ------------------------------------------ + * - Correct the reception logic to better report errors and avoid + * sending bogus packet up the stack + * - Delay RU config to avoid corrupting first received packet + * - Change config completion code (to actually check something) + * - Avoid reading out of bound in skbuf to transmit + * - Rectify a lot of (useless) debugging code + * - Change the way to `#ifdef SET_PSA_CRC' + * + * Changes made for release in 2.2.11 & 2.3.13 : + * ------------------------------------------- + * - Change e-mail and web page addresses + * - Watchdog timer is now correctly expressed in HZ, not in jiffies + * - Add channel number to the list of frequencies in range + * - Add the (short) list of bit-rates in range + * - Developp a new sensitivity... (sens.value & sens.fixed) + * + * Changes made for release in 2.2.14 & 2.3.23 : + * ------------------------------------------- + * - Fix check for root permission (break instead of exit) + * - New nwid & encoding setting (Wireless Extension 9) + * + * Changes made for release in 2.3.49 : + * ---------------------------------- + * - Indentation reformating (Alan) + * - Update to new network API (softnet - 2.3.43) : + * o replace dev->tbusy (Alan) + * o replace dev->tstart (Alan) + * o remove dev->interrupt (Alan) + * o add SMP locking via spinlock in splxx (me) + * o add spinlock in interrupt handler (me) + * o use kernel watchdog instead of ours (me) + * o increase watchdog timeout (kernel is more sensitive) (me) + * o verify that all the changes make sense and work (me) + * - Fixup a potential gotcha when reconfiguring and thighten a bit + * the interactions with Tx queue. + * + * Changes made for release in 2.4.0 : + * --------------------------------- + * - Fix spinlock stupid bugs that I left in. The driver is now SMP + * compliant and doesn't lockup at startup. + * + * Changes made for release in 2.5.2 : + * --------------------------------- + * - Use new driver API for Wireless Extensions : + * o got rid of wavelan_ioctl() + * o use a bunch of iw_handler instead + * + * Changes made for release in 2.5.35 : + * ---------------------------------- + * - Set dev->trans_start to avoid filling the logs + * - Handle better spurious/bogus interrupt + * - Avoid deadlocks in mmc_out()/mmc_in() + * + * Wishes & dreams: + * ---------------- + * - roaming (see Pcmcia driver) + */ + +/***************************** INCLUDES *****************************/ + +#include <linux/module.h> + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/types.h> +#include <linux/fcntl.h> +#include <linux/interrupt.h> +#include <linux/stat.h> +#include <linux/ptrace.h> +#include <linux/ioport.h> +#include <linux/in.h> +#include <linux/string.h> +#include <linux/delay.h> +#include <linux/bitops.h> +#include <asm/system.h> +#include <asm/io.h> +#include <asm/dma.h> +#include <asm/uaccess.h> +#include <linux/errno.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/slab.h> +#include <linux/timer.h> +#include <linux/init.h> + +#include <linux/wireless.h> /* Wireless extensions */ +#include <net/iw_handler.h> /* Wireless handlers */ + +/* WaveLAN declarations */ +#include "i82586.h" +#include "wavelan.h" + +/************************** DRIVER OPTIONS **************************/ +/* + * `#define' or `#undef' the following constant to change the behaviour + * of the driver... + */ +#undef SET_PSA_CRC /* Calculate and set the CRC on PSA (slower) */ +#define USE_PSA_CONFIG /* Use info from the PSA. */ +#undef EEPROM_IS_PROTECTED /* doesn't seem to be necessary */ +#define MULTICAST_AVOID /* Avoid extra multicast (I'm sceptical). */ +#undef SET_MAC_ADDRESS /* Experimental */ + +/* Warning: this stuff will slow down the driver. */ +#define WIRELESS_SPY /* Enable spying addresses. */ +#undef HISTOGRAM /* Enable histogram of signal level. */ + +/****************************** DEBUG ******************************/ + +#undef DEBUG_MODULE_TRACE /* module insertion/removal */ +#undef DEBUG_CALLBACK_TRACE /* calls made by Linux */ +#undef DEBUG_INTERRUPT_TRACE /* calls to handler */ +#undef DEBUG_INTERRUPT_INFO /* type of interrupt and so on */ +#define DEBUG_INTERRUPT_ERROR /* problems */ +#undef DEBUG_CONFIG_TRACE /* Trace the config functions. */ +#undef DEBUG_CONFIG_INFO /* what's going on */ +#define DEBUG_CONFIG_ERROR /* errors on configuration */ +#undef DEBUG_TX_TRACE /* transmission calls */ +#undef DEBUG_TX_INFO /* header of the transmitted packet */ +#undef DEBUG_TX_FAIL /* Normal failure conditions */ +#define DEBUG_TX_ERROR /* Unexpected conditions */ +#undef DEBUG_RX_TRACE /* transmission calls */ +#undef DEBUG_RX_INFO /* header of the received packet */ +#undef DEBUG_RX_FAIL /* Normal failure conditions */ +#define DEBUG_RX_ERROR /* Unexpected conditions */ + +#undef DEBUG_PACKET_DUMP /* Dump packet on the screen if defined to 32. */ +#undef DEBUG_IOCTL_TRACE /* misc. call by Linux */ +#undef DEBUG_IOCTL_INFO /* various debugging info */ +#define DEBUG_IOCTL_ERROR /* what's going wrong */ +#define DEBUG_BASIC_SHOW /* Show basic startup info. */ +#undef DEBUG_VERSION_SHOW /* Print version info. */ +#undef DEBUG_PSA_SHOW /* Dump PSA to screen. */ +#undef DEBUG_MMC_SHOW /* Dump mmc to screen. */ +#undef DEBUG_SHOW_UNUSED /* Show unused fields too. */ +#undef DEBUG_I82586_SHOW /* Show i82586 status. */ +#undef DEBUG_DEVICE_SHOW /* Show device parameters. */ + +/************************ CONSTANTS & MACROS ************************/ + +#ifdef DEBUG_VERSION_SHOW +static const char *version = "wavelan.c : v24 (SMP + wireless extensions) 11/12/01\n"; +#endif + +/* Watchdog temporisation */ +#define WATCHDOG_JIFFIES (512*HZ/100) + +/* ------------------------ PRIVATE IOCTL ------------------------ */ + +#define SIOCSIPQTHR SIOCIWFIRSTPRIV /* Set quality threshold */ +#define SIOCGIPQTHR SIOCIWFIRSTPRIV + 1 /* Get quality threshold */ + +#define SIOCSIPHISTO SIOCIWFIRSTPRIV + 2 /* Set histogram ranges */ +#define SIOCGIPHISTO SIOCIWFIRSTPRIV + 3 /* Get histogram values */ + +/****************************** TYPES ******************************/ + +/* Shortcuts */ +typedef struct iw_statistics iw_stats; +typedef struct iw_quality iw_qual; +typedef struct iw_freq iw_freq;typedef struct net_local net_local; +typedef struct timer_list timer_list; + +/* Basic types */ +typedef u_char mac_addr[WAVELAN_ADDR_SIZE]; /* Hardware address */ + +/* + * Static specific data for the interface. + * + * For each network interface, Linux keeps data in two structures: "device" + * keeps the generic data (same format for everybody) and "net_local" keeps + * additional specific data. + */ +struct net_local +{ + net_local * next; /* linked list of the devices */ + struct net_device * dev; /* reverse link */ + spinlock_t spinlock; /* Serialize access to the hardware (SMP) */ + int nresets; /* number of hardware resets */ + u_char reconfig_82586; /* We need to reconfigure the controller. */ + u_char promiscuous; /* promiscuous mode */ + int mc_count; /* number of multicast addresses */ + u_short hacr; /* current host interface state */ + + int tx_n_in_use; + u_short rx_head; + u_short rx_last; + u_short tx_first_free; + u_short tx_first_in_use; + + iw_stats wstats; /* Wireless-specific statistics */ + + struct iw_spy_data spy_data; + struct iw_public_data wireless_data; + +#ifdef HISTOGRAM + int his_number; /* number of intervals */ + u_char his_range[16]; /* boundaries of interval ]n-1; n] */ + u_long his_sum[16]; /* sum in interval */ +#endif /* HISTOGRAM */ +}; + +/**************************** PROTOTYPES ****************************/ + +/* ----------------------- MISC. SUBROUTINES ------------------------ */ +static u_char + wv_irq_to_psa(int); +static int + wv_psa_to_irq(u_char); +/* ------------------- HOST ADAPTER SUBROUTINES ------------------- */ +static inline u_short /* data */ + hasr_read(u_long); /* Read the host interface: base address */ +static inline void + hacr_write(u_long, /* Write to host interface: base address */ + u_short), /* data */ + hacr_write_slow(u_long, + u_short), + set_chan_attn(u_long, /* ioaddr */ + u_short), /* hacr */ + wv_hacr_reset(u_long), /* ioaddr */ + wv_16_off(u_long, /* ioaddr */ + u_short), /* hacr */ + wv_16_on(u_long, /* ioaddr */ + u_short), /* hacr */ + wv_ints_off(struct net_device *), + wv_ints_on(struct net_device *); +/* ----------------- MODEM MANAGEMENT SUBROUTINES ----------------- */ +static void + psa_read(u_long, /* Read the Parameter Storage Area. */ + u_short, /* hacr */ + int, /* offset in PSA */ + u_char *, /* buffer to fill */ + int), /* size to read */ + psa_write(u_long, /* Write to the PSA. */ + u_short, /* hacr */ + int, /* offset in PSA */ + u_char *, /* buffer in memory */ + int); /* length of buffer */ +static inline void + mmc_out(u_long, /* Write 1 byte to the Modem Manag Control. */ + u_short, + u_char), + mmc_write(u_long, /* Write n bytes to the MMC. */ + u_char, + u_char *, + int); +static inline u_char /* Read 1 byte from the MMC. */ + mmc_in(u_long, + u_short); +static inline void + mmc_read(u_long, /* Read n bytes from the MMC. */ + u_char, + u_char *, + int), + fee_wait(u_long, /* Wait for frequency EEPROM: base address */ + int, /* base delay to wait for */ + int); /* time to wait */ +static void + fee_read(u_long, /* Read the frequency EEPROM: base address */ + u_short, /* destination offset */ + u_short *, /* data buffer */ + int); /* number of registers */ +/* ---------------------- I82586 SUBROUTINES ----------------------- */ +static /*inline*/ void + obram_read(u_long, /* ioaddr */ + u_short, /* o */ + u_char *, /* b */ + int); /* n */ +static inline void + obram_write(u_long, /* ioaddr */ + u_short, /* o */ + u_char *, /* b */ + int); /* n */ +static void + wv_ack(struct net_device *); +static inline int + wv_synchronous_cmd(struct net_device *, + const char *), + wv_config_complete(struct net_device *, + u_long, + net_local *); +static int + wv_complete(struct net_device *, + u_long, + net_local *); +static inline void + wv_82586_reconfig(struct net_device *); +/* ------------------- DEBUG & INFO SUBROUTINES ------------------- */ +#ifdef DEBUG_I82586_SHOW +static void + wv_scb_show(unsigned short); +#endif +static inline void + wv_init_info(struct net_device *); /* display startup info */ +/* ------------------- IOCTL, STATS & RECONFIG ------------------- */ +static iw_stats * + wavelan_get_wireless_stats(struct net_device *); +static void + wavelan_set_multicast_list(struct net_device *); +/* ----------------------- PACKET RECEPTION ----------------------- */ +static inline void + wv_packet_read(struct net_device *, /* Read a packet from a frame. */ + u_short, + int), + wv_receive(struct net_device *); /* Read all packets waiting. */ +/* --------------------- PACKET TRANSMISSION --------------------- */ +static inline int + wv_packet_write(struct net_device *, /* Write a packet to the Tx buffer. */ + void *, + short); +static netdev_tx_t + wavelan_packet_xmit(struct sk_buff *, /* Send a packet. */ + struct net_device *); +/* -------------------- HARDWARE CONFIGURATION -------------------- */ +static inline int + wv_mmc_init(struct net_device *), /* Initialize the modem. */ + wv_ru_start(struct net_device *), /* Start the i82586 receiver unit. */ + wv_cu_start(struct net_device *), /* Start the i82586 command unit. */ + wv_82586_start(struct net_device *); /* Start the i82586. */ +static void + wv_82586_config(struct net_device *); /* Configure the i82586. */ +static inline void + wv_82586_stop(struct net_device *); +static int + wv_hw_reset(struct net_device *), /* Reset the WaveLAN hardware. */ + wv_check_ioaddr(u_long, /* ioaddr */ + u_char *); /* mac address (read) */ +/* ---------------------- INTERRUPT HANDLING ---------------------- */ +static irqreturn_t + wavelan_interrupt(int, /* interrupt handler */ + void *); +static void + wavelan_watchdog(struct net_device *); /* transmission watchdog */ +/* ------------------- CONFIGURATION CALLBACKS ------------------- */ +static int + wavelan_open(struct net_device *), /* Open the device. */ + wavelan_close(struct net_device *), /* Close the device. */ + wavelan_config(struct net_device *, unsigned short);/* Configure one device. */ +extern struct net_device *wavelan_probe(int unit); /* See Space.c. */ + +/**************************** VARIABLES ****************************/ + +/* + * This is the root of the linked list of WaveLAN drivers + * It is use to verify that we don't reuse the same base address + * for two different drivers and to clean up when removing the module. + */ +static net_local * wavelan_list = (net_local *) NULL; + +/* + * This table is used to translate the PSA value to IRQ number + * and vice versa. + */ +static u_char irqvals[] = +{ + 0, 0, 0, 0x01, + 0x02, 0x04, 0, 0x08, + 0, 0, 0x10, 0x20, + 0x40, 0, 0, 0x80, +}; + +/* + * Table of the available I/O addresses (base addresses) for WaveLAN + */ +static unsigned short iobase[] = +{ +#if 0 + /* Leave out 0x3C0 for now -- seems to clash with some video + * controllers. + * Leave out the others too -- we will always use 0x390 and leave + * 0x300 for the Ethernet device. + * Jean II: 0x3E0 is fine as well. + */ + 0x300, 0x390, 0x3E0, 0x3C0 +#endif /* 0 */ + 0x390, 0x3E0 +}; + +#ifdef MODULE +/* Parameters set by insmod */ +static int io[4]; +static int irq[4]; +static char *name[4]; +module_param_array(io, int, NULL, 0); +module_param_array(irq, int, NULL, 0); +module_param_array(name, charp, NULL, 0); + +MODULE_PARM_DESC(io, "WaveLAN I/O base address(es),required"); +MODULE_PARM_DESC(irq, "WaveLAN IRQ number(s)"); +MODULE_PARM_DESC(name, "WaveLAN interface neme(s)"); +#endif /* MODULE */ + +#endif /* WAVELAN_P_H */ diff --git a/drivers/staging/wavelan/wavelan_cs.c b/drivers/staging/wavelan/wavelan_cs.c new file mode 100644 index 000000000000..33918fd5b231 --- /dev/null +++ b/drivers/staging/wavelan/wavelan_cs.c @@ -0,0 +1,4610 @@ +/* + * Wavelan Pcmcia driver + * + * Jean II - HPLB '96 + * + * Reorganisation and extension of the driver. + * Original copyright follow. See wavelan_cs.p.h for details. + * + * This code is derived from Anthony D. Joseph's code and all the changes here + * are also under the original copyright below. + * + * This code supports version 2.00 of WaveLAN/PCMCIA cards (2.4GHz), and + * can work on Linux 2.0.36 with support of David Hinds' PCMCIA Card Services + * + * Joe Finney (joe@comp.lancs.ac.uk) at Lancaster University in UK added + * critical code in the routine to initialize the Modem Management Controller. + * + * Thanks to Alan Cox and Bruce Janson for their advice. + * + * -- Yunzhou Li (scip4166@nus.sg) + * +#ifdef WAVELAN_ROAMING + * Roaming support added 07/22/98 by Justin Seger (jseger@media.mit.edu) + * based on patch by Joe Finney from Lancaster University. +#endif + * + * Lucent (formerly AT&T GIS, formerly NCR) WaveLAN PCMCIA card: An + * Ethernet-like radio transceiver controlled by an Intel 82593 coprocessor. + * + * A non-shared memory PCMCIA ethernet driver for linux + * + * ISA version modified to support PCMCIA by Anthony Joseph (adj@lcs.mit.edu) + * + * + * Joseph O'Sullivan & John Langford (josullvn@cs.cmu.edu & jcl@cs.cmu.edu) + * + * Apr 2 '98 made changes to bring the i82593 control/int handling in line + * with offical specs... + * + **************************************************************************** + * Copyright 1995 + * Anthony D. Joseph + * Massachusetts Institute of Technology + * + * Permission to use, copy, modify, and distribute this program + * for any purpose and without fee is hereby granted, provided + * that this copyright and permission notice appear on all copies + * and supporting documentation, the name of M.I.T. not be used + * in advertising or publicity pertaining to distribution of the + * program without specific prior permission, and notice be given + * in supporting documentation that copying and distribution is + * by permission of M.I.T. M.I.T. makes no representations about + * the suitability of this software for any purpose. It is pro- + * vided "as is" without express or implied warranty. + **************************************************************************** + * + */ + +/* Do *NOT* add other headers here, you are guaranteed to be wrong - Jean II */ +#include "wavelan_cs.p.h" /* Private header */ + +#ifdef WAVELAN_ROAMING +static void wl_cell_expiry(unsigned long data); +static void wl_del_wavepoint(wavepoint_history *wavepoint, struct net_local *lp); +static void wv_nwid_filter(unsigned char mode, net_local *lp); +#endif /* WAVELAN_ROAMING */ + +/************************* MISC SUBROUTINES **************************/ +/* + * Subroutines which won't fit in one of the following category + * (wavelan modem or i82593) + */ + +/******************* MODEM MANAGEMENT SUBROUTINES *******************/ +/* + * Useful subroutines to manage the modem of the wavelan + */ + +/*------------------------------------------------------------------*/ +/* + * Read from card's Host Adaptor Status Register. + */ +static inline u_char +hasr_read(u_long base) +{ + return(inb(HASR(base))); +} /* hasr_read */ + +/*------------------------------------------------------------------*/ +/* + * Write to card's Host Adapter Command Register. + */ +static inline void +hacr_write(u_long base, + u_char hacr) +{ + outb(hacr, HACR(base)); +} /* hacr_write */ + +/*------------------------------------------------------------------*/ +/* + * Write to card's Host Adapter Command Register. Include a delay for + * those times when it is needed. + */ +static void +hacr_write_slow(u_long base, + u_char hacr) +{ + hacr_write(base, hacr); + /* delay might only be needed sometimes */ + mdelay(1); +} /* hacr_write_slow */ + +/*------------------------------------------------------------------*/ +/* + * Read the Parameter Storage Area from the WaveLAN card's memory + */ +static void +psa_read(struct net_device * dev, + int o, /* offset in PSA */ + u_char * b, /* buffer to fill */ + int n) /* size to read */ +{ + net_local *lp = netdev_priv(dev); + u_char __iomem *ptr = lp->mem + PSA_ADDR + (o << 1); + + while(n-- > 0) + { + *b++ = readb(ptr); + /* Due to a lack of address decode pins, the WaveLAN PCMCIA card + * only supports reading even memory addresses. That means the + * increment here MUST be two. + * Because of that, we can't use memcpy_fromio()... + */ + ptr += 2; + } +} /* psa_read */ + +/*------------------------------------------------------------------*/ +/* + * Write the Parameter Storage Area to the WaveLAN card's memory + */ +static void +psa_write(struct net_device * dev, + int o, /* Offset in psa */ + u_char * b, /* Buffer in memory */ + int n) /* Length of buffer */ +{ + net_local *lp = netdev_priv(dev); + u_char __iomem *ptr = lp->mem + PSA_ADDR + (o << 1); + int count = 0; + unsigned int base = dev->base_addr; + /* As there seem to have no flag PSA_BUSY as in the ISA model, we are + * oblige to verify this address to know when the PSA is ready... */ + volatile u_char __iomem *verify = lp->mem + PSA_ADDR + + (psaoff(0, psa_comp_number) << 1); + + /* Authorize writing to PSA */ + hacr_write(base, HACR_PWR_STAT | HACR_ROM_WEN); + + while(n-- > 0) + { + /* write to PSA */ + writeb(*b++, ptr); + ptr += 2; + + /* I don't have the spec, so I don't know what the correct + * sequence to write is. This hack seem to work for me... */ + count = 0; + while((readb(verify) != PSA_COMP_PCMCIA_915) && (count++ < 100)) + mdelay(1); + } + + /* Put the host interface back in standard state */ + hacr_write(base, HACR_DEFAULT); +} /* psa_write */ + +#ifdef SET_PSA_CRC +/*------------------------------------------------------------------*/ +/* + * Calculate the PSA CRC + * Thanks to Valster, Nico <NVALSTER@wcnd.nl.lucent.com> for the code + * NOTE: By specifying a length including the CRC position the + * returned value should be zero. (i.e. a correct checksum in the PSA) + * + * The Windows drivers don't use the CRC, but the AP and the PtP tool + * depend on it. + */ +static u_short +psa_crc(unsigned char * psa, /* The PSA */ + int size) /* Number of short for CRC */ +{ + int byte_cnt; /* Loop on the PSA */ + u_short crc_bytes = 0; /* Data in the PSA */ + int bit_cnt; /* Loop on the bits of the short */ + + for(byte_cnt = 0; byte_cnt < size; byte_cnt++ ) + { + crc_bytes ^= psa[byte_cnt]; /* Its an xor */ + + for(bit_cnt = 1; bit_cnt < 9; bit_cnt++ ) + { + if(crc_bytes & 0x0001) + crc_bytes = (crc_bytes >> 1) ^ 0xA001; + else + crc_bytes >>= 1 ; + } + } + + return crc_bytes; +} /* psa_crc */ +#endif /* SET_PSA_CRC */ + +/*------------------------------------------------------------------*/ +/* + * update the checksum field in the Wavelan's PSA + */ +static void +update_psa_checksum(struct net_device * dev) +{ +#ifdef SET_PSA_CRC + psa_t psa; + u_short crc; + + /* read the parameter storage area */ + psa_read(dev, 0, (unsigned char *) &psa, sizeof(psa)); + + /* update the checksum */ + crc = psa_crc((unsigned char *) &psa, + sizeof(psa) - sizeof(psa.psa_crc[0]) - sizeof(psa.psa_crc[1]) + - sizeof(psa.psa_crc_status)); + + psa.psa_crc[0] = crc & 0xFF; + psa.psa_crc[1] = (crc & 0xFF00) >> 8; + + /* Write it ! */ + psa_write(dev, (char *)&psa.psa_crc - (char *)&psa, + (unsigned char *)&psa.psa_crc, 2); + +#ifdef DEBUG_IOCTL_INFO + printk (KERN_DEBUG "%s: update_psa_checksum(): crc = 0x%02x%02x\n", + dev->name, psa.psa_crc[0], psa.psa_crc[1]); + + /* Check again (luxury !) */ + crc = psa_crc((unsigned char *) &psa, + sizeof(psa) - sizeof(psa.psa_crc_status)); + + if(crc != 0) + printk(KERN_WARNING "%s: update_psa_checksum(): CRC does not agree with PSA data (even after recalculating)\n", dev->name); +#endif /* DEBUG_IOCTL_INFO */ +#endif /* SET_PSA_CRC */ +} /* update_psa_checksum */ + +/*------------------------------------------------------------------*/ +/* + * Write 1 byte to the MMC. + */ +static void +mmc_out(u_long base, + u_short o, + u_char d) +{ + int count = 0; + + /* Wait for MMC to go idle */ + while((count++ < 100) && (inb(HASR(base)) & HASR_MMI_BUSY)) + udelay(10); + + outb((u_char)((o << 1) | MMR_MMI_WR), MMR(base)); + outb(d, MMD(base)); +} + +/*------------------------------------------------------------------*/ +/* + * Routine to write bytes to the Modem Management Controller. + * We start by the end because it is the way it should be ! + */ +static void +mmc_write(u_long base, + u_char o, + u_char * b, + int n) +{ + o += n; + b += n; + + while(n-- > 0 ) + mmc_out(base, --o, *(--b)); +} /* mmc_write */ + +/*------------------------------------------------------------------*/ +/* + * Read 1 byte from the MMC. + * Optimised version for 1 byte, avoid using memory... + */ +static u_char +mmc_in(u_long base, + u_short o) +{ + int count = 0; + + while((count++ < 100) && (inb(HASR(base)) & HASR_MMI_BUSY)) + udelay(10); + outb(o << 1, MMR(base)); /* Set the read address */ + + outb(0, MMD(base)); /* Required dummy write */ + + while((count++ < 100) && (inb(HASR(base)) & HASR_MMI_BUSY)) + udelay(10); + return (u_char) (inb(MMD(base))); /* Now do the actual read */ +} + +/*------------------------------------------------------------------*/ +/* + * Routine to read bytes from the Modem Management Controller. + * The implementation is complicated by a lack of address lines, + * which prevents decoding of the low-order bit. + * (code has just been moved in the above function) + * We start by the end because it is the way it should be ! + */ +static void +mmc_read(u_long base, + u_char o, + u_char * b, + int n) +{ + o += n; + b += n; + + while(n-- > 0) + *(--b) = mmc_in(base, --o); +} /* mmc_read */ + +/*------------------------------------------------------------------*/ +/* + * Get the type of encryption available... + */ +static inline int +mmc_encr(u_long base) /* i/o port of the card */ +{ + int temp; + + temp = mmc_in(base, mmroff(0, mmr_des_avail)); + if((temp != MMR_DES_AVAIL_DES) && (temp != MMR_DES_AVAIL_AES)) + return 0; + else + return temp; +} + +/*------------------------------------------------------------------*/ +/* + * Wait for the frequency EEprom to complete a command... + */ +static void +fee_wait(u_long base, /* i/o port of the card */ + int delay, /* Base delay to wait for */ + int number) /* Number of time to wait */ +{ + int count = 0; /* Wait only a limited time */ + + while((count++ < number) && + (mmc_in(base, mmroff(0, mmr_fee_status)) & MMR_FEE_STATUS_BUSY)) + udelay(delay); +} + +/*------------------------------------------------------------------*/ +/* + * Read bytes from the Frequency EEprom (frequency select cards). + */ +static void +fee_read(u_long base, /* i/o port of the card */ + u_short o, /* destination offset */ + u_short * b, /* data buffer */ + int n) /* number of registers */ +{ + b += n; /* Position at the end of the area */ + + /* Write the address */ + mmc_out(base, mmwoff(0, mmw_fee_addr), o + n - 1); + + /* Loop on all buffer */ + while(n-- > 0) + { + /* Write the read command */ + mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_READ); + + /* Wait until EEprom is ready (should be quick !) */ + fee_wait(base, 10, 100); + + /* Read the value */ + *--b = ((mmc_in(base, mmroff(0, mmr_fee_data_h)) << 8) | + mmc_in(base, mmroff(0, mmr_fee_data_l))); + } +} + + +/*------------------------------------------------------------------*/ +/* + * Write bytes from the Frequency EEprom (frequency select cards). + * This is a bit complicated, because the frequency eeprom has to + * be unprotected and the write enabled. + * Jean II + */ +static void +fee_write(u_long base, /* i/o port of the card */ + u_short o, /* destination offset */ + u_short * b, /* data buffer */ + int n) /* number of registers */ +{ + b += n; /* Position at the end of the area */ + +#ifdef EEPROM_IS_PROTECTED /* disabled */ +#ifdef DOESNT_SEEM_TO_WORK /* disabled */ + /* Ask to read the protected register */ + mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_PRREAD); + + fee_wait(base, 10, 100); + + /* Read the protected register */ + printk("Protected 2 : %02X-%02X\n", + mmc_in(base, mmroff(0, mmr_fee_data_h)), + mmc_in(base, mmroff(0, mmr_fee_data_l))); +#endif /* DOESNT_SEEM_TO_WORK */ + + /* Enable protected register */ + mmc_out(base, mmwoff(0, mmw_fee_addr), MMW_FEE_ADDR_EN); + mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_PREN); + + fee_wait(base, 10, 100); + + /* Unprotect area */ + mmc_out(base, mmwoff(0, mmw_fee_addr), o + n); + mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_PRWRITE); +#ifdef DOESNT_SEEM_TO_WORK /* disabled */ + /* Or use : */ + mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_PRCLEAR); +#endif /* DOESNT_SEEM_TO_WORK */ + + fee_wait(base, 10, 100); +#endif /* EEPROM_IS_PROTECTED */ + + /* Write enable */ + mmc_out(base, mmwoff(0, mmw_fee_addr), MMW_FEE_ADDR_EN); + mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_WREN); + + fee_wait(base, 10, 100); + + /* Write the EEprom address */ + mmc_out(base, mmwoff(0, mmw_fee_addr), o + n - 1); + + /* Loop on all buffer */ + while(n-- > 0) + { + /* Write the value */ + mmc_out(base, mmwoff(0, mmw_fee_data_h), (*--b) >> 8); + mmc_out(base, mmwoff(0, mmw_fee_data_l), *b & 0xFF); + + /* Write the write command */ + mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_WRITE); + + /* Wavelan doc says : wait at least 10 ms for EEBUSY = 0 */ + mdelay(10); + fee_wait(base, 10, 100); + } + + /* Write disable */ + mmc_out(base, mmwoff(0, mmw_fee_addr), MMW_FEE_ADDR_DS); + mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_WDS); + + fee_wait(base, 10, 100); + +#ifdef EEPROM_IS_PROTECTED /* disabled */ + /* Reprotect EEprom */ + mmc_out(base, mmwoff(0, mmw_fee_addr), 0x00); + mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_PRWRITE); + + fee_wait(base, 10, 100); +#endif /* EEPROM_IS_PROTECTED */ +} + +/******************* WaveLAN Roaming routines... ********************/ + +#ifdef WAVELAN_ROAMING /* Conditional compile, see wavelan_cs.h */ + +static unsigned char WAVELAN_BEACON_ADDRESS[] = {0x09,0x00,0x0e,0x20,0x03,0x00}; + +static void wv_roam_init(struct net_device *dev) +{ + net_local *lp= netdev_priv(dev); + + /* Do not remove this unless you have a good reason */ + printk(KERN_NOTICE "%s: Warning, you have enabled roaming on" + " device %s !\n", dev->name, dev->name); + printk(KERN_NOTICE "Roaming is currently an experimental unsupported feature" + " of the Wavelan driver.\n"); + printk(KERN_NOTICE "It may work, but may also make the driver behave in" + " erratic ways or crash.\n"); + + lp->wavepoint_table.head=NULL; /* Initialise WavePoint table */ + lp->wavepoint_table.num_wavepoints=0; + lp->wavepoint_table.locked=0; + lp->curr_point=NULL; /* No default WavePoint */ + lp->cell_search=0; + + lp->cell_timer.data=(long)lp; /* Start cell expiry timer */ + lp->cell_timer.function=wl_cell_expiry; + lp->cell_timer.expires=jiffies+CELL_TIMEOUT; + add_timer(&lp->cell_timer); + + wv_nwid_filter(NWID_PROMISC,lp) ; /* Enter NWID promiscuous mode */ + /* to build up a good WavePoint */ + /* table... */ + printk(KERN_DEBUG "WaveLAN: Roaming enabled on device %s\n",dev->name); +} + +static void wv_roam_cleanup(struct net_device *dev) +{ + wavepoint_history *ptr,*old_ptr; + net_local *lp= netdev_priv(dev); + + printk(KERN_DEBUG "WaveLAN: Roaming Disabled on device %s\n",dev->name); + + /* Fixme : maybe we should check that the timer exist before deleting it */ + del_timer(&lp->cell_timer); /* Remove cell expiry timer */ + ptr=lp->wavepoint_table.head; /* Clear device's WavePoint table */ + while(ptr!=NULL) + { + old_ptr=ptr; + ptr=ptr->next; + wl_del_wavepoint(old_ptr,lp); + } +} + +/* Enable/Disable NWID promiscuous mode on a given device */ +static void wv_nwid_filter(unsigned char mode, net_local *lp) +{ + mm_t m; + unsigned long flags; + +#ifdef WAVELAN_ROAMING_DEBUG + printk(KERN_DEBUG "WaveLAN: NWID promisc %s, device %s\n",(mode==NWID_PROMISC) ? "on" : "off", lp->dev->name); +#endif + + /* Disable interrupts & save flags */ + spin_lock_irqsave(&lp->spinlock, flags); + + m.w.mmw_loopt_sel = (mode==NWID_PROMISC) ? MMW_LOOPT_SEL_DIS_NWID : 0x00; + mmc_write(lp->dev->base_addr, (char *)&m.w.mmw_loopt_sel - (char *)&m, (unsigned char *)&m.w.mmw_loopt_sel, 1); + + if(mode==NWID_PROMISC) + lp->cell_search=1; + else + lp->cell_search=0; + + /* ReEnable interrupts & restore flags */ + spin_unlock_irqrestore(&lp->spinlock, flags); +} + +/* Find a record in the WavePoint table matching a given NWID */ +static wavepoint_history *wl_roam_check(unsigned short nwid, net_local *lp) +{ + wavepoint_history *ptr=lp->wavepoint_table.head; + + while(ptr!=NULL){ + if(ptr->nwid==nwid) + return ptr; + ptr=ptr->next; + } + return NULL; +} + +/* Create a new wavepoint table entry */ +static wavepoint_history *wl_new_wavepoint(unsigned short nwid, unsigned char seq, net_local* lp) +{ + wavepoint_history *new_wavepoint; + +#ifdef WAVELAN_ROAMING_DEBUG + printk(KERN_DEBUG "WaveLAN: New Wavepoint, NWID:%.4X\n",nwid); +#endif + + if(lp->wavepoint_table.num_wavepoints==MAX_WAVEPOINTS) + return NULL; + + new_wavepoint = kmalloc(sizeof(wavepoint_history),GFP_ATOMIC); + if(new_wavepoint==NULL) + return NULL; + + new_wavepoint->nwid=nwid; /* New WavePoints NWID */ + new_wavepoint->average_fast=0; /* Running Averages..*/ + new_wavepoint->average_slow=0; + new_wavepoint->qualptr=0; /* Start of ringbuffer */ + new_wavepoint->last_seq=seq-1; /* Last sequence no.seen */ + memset(new_wavepoint->sigqual,0,WAVEPOINT_HISTORY);/* Empty ringbuffer */ + + new_wavepoint->next=lp->wavepoint_table.head;/* Add to wavepoint table */ + new_wavepoint->prev=NULL; + + if(lp->wavepoint_table.head!=NULL) + lp->wavepoint_table.head->prev=new_wavepoint; + + lp->wavepoint_table.head=new_wavepoint; + + lp->wavepoint_table.num_wavepoints++; /* no. of visible wavepoints */ + + return new_wavepoint; +} + +/* Remove a wavepoint entry from WavePoint table */ +static void wl_del_wavepoint(wavepoint_history *wavepoint, struct net_local *lp) +{ + if(wavepoint==NULL) + return; + + if(lp->curr_point==wavepoint) + lp->curr_point=NULL; + + if(wavepoint->prev!=NULL) + wavepoint->prev->next=wavepoint->next; + + if(wavepoint->next!=NULL) + wavepoint->next->prev=wavepoint->prev; + + if(lp->wavepoint_table.head==wavepoint) + lp->wavepoint_table.head=wavepoint->next; + + lp->wavepoint_table.num_wavepoints--; + kfree(wavepoint); +} + +/* Timer callback function - checks WavePoint table for stale entries */ +static void wl_cell_expiry(unsigned long data) +{ + net_local *lp=(net_local *)data; + wavepoint_history *wavepoint=lp->wavepoint_table.head,*old_point; + +#if WAVELAN_ROAMING_DEBUG > 1 + printk(KERN_DEBUG "WaveLAN: Wavepoint timeout, dev %s\n",lp->dev->name); +#endif + + if(lp->wavepoint_table.locked) + { +#if WAVELAN_ROAMING_DEBUG > 1 + printk(KERN_DEBUG "WaveLAN: Wavepoint table locked...\n"); +#endif + + lp->cell_timer.expires=jiffies+1; /* If table in use, come back later */ + add_timer(&lp->cell_timer); + return; + } + + while(wavepoint!=NULL) + { + if(time_after(jiffies, wavepoint->last_seen + CELL_TIMEOUT)) + { +#ifdef WAVELAN_ROAMING_DEBUG + printk(KERN_DEBUG "WaveLAN: Bye bye %.4X\n",wavepoint->nwid); +#endif + + old_point=wavepoint; + wavepoint=wavepoint->next; + wl_del_wavepoint(old_point,lp); + } + else + wavepoint=wavepoint->next; + } + lp->cell_timer.expires=jiffies+CELL_TIMEOUT; + add_timer(&lp->cell_timer); +} + +/* Update SNR history of a wavepoint */ +static void wl_update_history(wavepoint_history *wavepoint, unsigned char sigqual, unsigned char seq) +{ + int i=0,num_missed=0,ptr=0; + int average_fast=0,average_slow=0; + + num_missed=(seq-wavepoint->last_seq)%WAVEPOINT_HISTORY;/* Have we missed + any beacons? */ + if(num_missed) + for(i=0;i<num_missed;i++) + { + wavepoint->sigqual[wavepoint->qualptr++]=0; /* If so, enter them as 0's */ + wavepoint->qualptr %=WAVEPOINT_HISTORY; /* in the ringbuffer. */ + } + wavepoint->last_seen=jiffies; /* Add beacon to history */ + wavepoint->last_seq=seq; + wavepoint->sigqual[wavepoint->qualptr++]=sigqual; + wavepoint->qualptr %=WAVEPOINT_HISTORY; + ptr=(wavepoint->qualptr-WAVEPOINT_FAST_HISTORY+WAVEPOINT_HISTORY)%WAVEPOINT_HISTORY; + + for(i=0;i<WAVEPOINT_FAST_HISTORY;i++) /* Update running averages */ + { + average_fast+=wavepoint->sigqual[ptr++]; + ptr %=WAVEPOINT_HISTORY; + } + + average_slow=average_fast; + for(i=WAVEPOINT_FAST_HISTORY;i<WAVEPOINT_HISTORY;i++) + { + average_slow+=wavepoint->sigqual[ptr++]; + ptr %=WAVEPOINT_HISTORY; + } + + wavepoint->average_fast=average_fast/WAVEPOINT_FAST_HISTORY; + wavepoint->average_slow=average_slow/WAVEPOINT_HISTORY; +} + +/* Perform a handover to a new WavePoint */ +static void wv_roam_handover(wavepoint_history *wavepoint, net_local *lp) +{ + unsigned int base = lp->dev->base_addr; + mm_t m; + unsigned long flags; + + if(wavepoint==lp->curr_point) /* Sanity check... */ + { + wv_nwid_filter(!NWID_PROMISC,lp); + return; + } + +#ifdef WAVELAN_ROAMING_DEBUG + printk(KERN_DEBUG "WaveLAN: Doing handover to %.4X, dev %s\n",wavepoint->nwid,lp->dev->name); +#endif + + /* Disable interrupts & save flags */ + spin_lock_irqsave(&lp->spinlock, flags); + + m.w.mmw_netw_id_l = wavepoint->nwid & 0xFF; + m.w.mmw_netw_id_h = (wavepoint->nwid & 0xFF00) >> 8; + + mmc_write(base, (char *)&m.w.mmw_netw_id_l - (char *)&m, (unsigned char *)&m.w.mmw_netw_id_l, 2); + + /* ReEnable interrupts & restore flags */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + wv_nwid_filter(!NWID_PROMISC,lp); + lp->curr_point=wavepoint; +} + +/* Called when a WavePoint beacon is received */ +static void wl_roam_gather(struct net_device * dev, + u_char * hdr, /* Beacon header */ + u_char * stats) /* SNR, Signal quality + of packet */ +{ + wavepoint_beacon *beacon= (wavepoint_beacon *)hdr; /* Rcvd. Beacon */ + unsigned short nwid=ntohs(beacon->nwid); + unsigned short sigqual=stats[2] & MMR_SGNL_QUAL; /* SNR of beacon */ + wavepoint_history *wavepoint=NULL; /* WavePoint table entry */ + net_local *lp = netdev_priv(dev); /* Device info */ + +#ifdef I_NEED_THIS_FEATURE + /* Some people don't need this, some other may need it */ + nwid=nwid^ntohs(beacon->domain_id); +#endif + +#if WAVELAN_ROAMING_DEBUG > 1 + printk(KERN_DEBUG "WaveLAN: beacon, dev %s:\n",dev->name); + printk(KERN_DEBUG "Domain: %.4X NWID: %.4X SigQual=%d\n",ntohs(beacon->domain_id),nwid,sigqual); +#endif + + lp->wavepoint_table.locked=1; /* <Mutex> */ + + wavepoint=wl_roam_check(nwid,lp); /* Find WavePoint table entry */ + if(wavepoint==NULL) /* If no entry, Create a new one... */ + { + wavepoint=wl_new_wavepoint(nwid,beacon->seq,lp); + if(wavepoint==NULL) + goto out; + } + if(lp->curr_point==NULL) /* If this is the only WavePoint, */ + wv_roam_handover(wavepoint, lp); /* Jump on it! */ + + wl_update_history(wavepoint, sigqual, beacon->seq); /* Update SNR history + stats. */ + + if(lp->curr_point->average_slow < SEARCH_THRESH_LOW) /* If our current */ + if(!lp->cell_search) /* WavePoint is getting faint, */ + wv_nwid_filter(NWID_PROMISC,lp); /* start looking for a new one */ + + if(wavepoint->average_slow > + lp->curr_point->average_slow + WAVELAN_ROAMING_DELTA) + wv_roam_handover(wavepoint, lp); /* Handover to a better WavePoint */ + + if(lp->curr_point->average_slow > SEARCH_THRESH_HIGH) /* If our SNR is */ + if(lp->cell_search) /* getting better, drop out of cell search mode */ + wv_nwid_filter(!NWID_PROMISC,lp); + +out: + lp->wavepoint_table.locked=0; /* </MUTEX> :-) */ +} + +/* Test this MAC frame a WavePoint beacon */ +static inline int WAVELAN_BEACON(unsigned char *data) +{ + wavepoint_beacon *beacon= (wavepoint_beacon *)data; + static const wavepoint_beacon beacon_template={0xaa,0xaa,0x03,0x08,0x00,0x0e,0x20,0x03,0x00}; + + if(memcmp(beacon,&beacon_template,9)==0) + return 1; + else + return 0; +} +#endif /* WAVELAN_ROAMING */ + +/************************ I82593 SUBROUTINES *************************/ +/* + * Useful subroutines to manage the Ethernet controller + */ + +/*------------------------------------------------------------------*/ +/* + * Routine to synchronously send a command to the i82593 chip. + * Should be called with interrupts disabled. + * (called by wv_packet_write(), wv_ru_stop(), wv_ru_start(), + * wv_82593_config() & wv_diag()) + */ +static int +wv_82593_cmd(struct net_device * dev, + char * str, + int cmd, + int result) +{ + unsigned int base = dev->base_addr; + int status; + int wait_completed; + long spin; + + /* Spin until the chip finishes executing its current command (if any) */ + spin = 1000; + do + { + /* Time calibration of the loop */ + udelay(10); + + /* Read the interrupt register */ + outb(OP0_NOP | CR0_STATUS_3, LCCR(base)); + status = inb(LCSR(base)); + } + while(((status & SR3_EXEC_STATE_MASK) != SR3_EXEC_IDLE) && (spin-- > 0)); + + /* If the interrupt hasn't been posted */ + if (spin < 0) { +#ifdef DEBUG_INTERRUPT_ERROR + printk(KERN_INFO "wv_82593_cmd: %s timeout (previous command), status 0x%02x\n", + str, status); +#endif + return(FALSE); + } + + /* Issue the command to the controller */ + outb(cmd, LCCR(base)); + + /* If we don't have to check the result of the command + * Note : this mean that the irq handler will deal with that */ + if(result == SR0_NO_RESULT) + return(TRUE); + + /* We are waiting for command completion */ + wait_completed = TRUE; + + /* Busy wait while the LAN controller executes the command. */ + spin = 1000; + do + { + /* Time calibration of the loop */ + udelay(10); + + /* Read the interrupt register */ + outb(CR0_STATUS_0 | OP0_NOP, LCCR(base)); + status = inb(LCSR(base)); + + /* Check if there was an interrupt posted */ + if((status & SR0_INTERRUPT)) + { + /* Acknowledge the interrupt */ + outb(CR0_INT_ACK | OP0_NOP, LCCR(base)); + + /* Check if interrupt is a command completion */ + if(((status & SR0_BOTH_RX_TX) != SR0_BOTH_RX_TX) && + ((status & SR0_BOTH_RX_TX) != 0x0) && + !(status & SR0_RECEPTION)) + { + /* Signal command completion */ + wait_completed = FALSE; + } + else + { + /* Note : Rx interrupts will be handled later, because we can + * handle multiple Rx packets at once */ +#ifdef DEBUG_INTERRUPT_INFO + printk(KERN_INFO "wv_82593_cmd: not our interrupt\n"); +#endif + } + } + } + while(wait_completed && (spin-- > 0)); + + /* If the interrupt hasn't be posted */ + if(wait_completed) + { +#ifdef DEBUG_INTERRUPT_ERROR + printk(KERN_INFO "wv_82593_cmd: %s timeout, status 0x%02x\n", + str, status); +#endif + return(FALSE); + } + + /* Check the return code returned by the card (see above) against + * the expected return code provided by the caller */ + if((status & SR0_EVENT_MASK) != result) + { +#ifdef DEBUG_INTERRUPT_ERROR + printk(KERN_INFO "wv_82593_cmd: %s failed, status = 0x%x\n", + str, status); +#endif + return(FALSE); + } + + return(TRUE); +} /* wv_82593_cmd */ + +/*------------------------------------------------------------------*/ +/* + * This routine does a 593 op-code number 7, and obtains the diagnose + * status for the WaveLAN. + */ +static inline int +wv_diag(struct net_device * dev) +{ + return(wv_82593_cmd(dev, "wv_diag(): diagnose", + OP0_DIAGNOSE, SR0_DIAGNOSE_PASSED)); +} /* wv_diag */ + +/*------------------------------------------------------------------*/ +/* + * Routine to read len bytes from the i82593's ring buffer, starting at + * chip address addr. The results read from the chip are stored in buf. + * The return value is the address to use for next the call. + */ +static int +read_ringbuf(struct net_device * dev, + int addr, + char * buf, + int len) +{ + unsigned int base = dev->base_addr; + int ring_ptr = addr; + int chunk_len; + char * buf_ptr = buf; + + /* Get all the buffer */ + while(len > 0) + { + /* Position the Program I/O Register at the ring buffer pointer */ + outb(ring_ptr & 0xff, PIORL(base)); + outb(((ring_ptr >> 8) & PIORH_MASK), PIORH(base)); + + /* First, determine how much we can read without wrapping around the + ring buffer */ + if((addr + len) < (RX_BASE + RX_SIZE)) + chunk_len = len; + else + chunk_len = RX_BASE + RX_SIZE - addr; + insb(PIOP(base), buf_ptr, chunk_len); + buf_ptr += chunk_len; + len -= chunk_len; + ring_ptr = (ring_ptr - RX_BASE + chunk_len) % RX_SIZE + RX_BASE; + } + return(ring_ptr); +} /* read_ringbuf */ + +/*------------------------------------------------------------------*/ +/* + * Reconfigure the i82593, or at least ask for it... + * Because wv_82593_config use the transmission buffer, we must do it + * when we are sure that there is no transmission, so we do it now + * or in wavelan_packet_xmit() (I can't find any better place, + * wavelan_interrupt is not an option...), so you may experience + * some delay sometime... + */ +static void +wv_82593_reconfig(struct net_device * dev) +{ + net_local * lp = netdev_priv(dev); + struct pcmcia_device * link = lp->link; + unsigned long flags; + + /* Arm the flag, will be cleard in wv_82593_config() */ + lp->reconfig_82593 = TRUE; + + /* Check if we can do it now ! */ + if((link->open) && (netif_running(dev)) && !(netif_queue_stopped(dev))) + { + spin_lock_irqsave(&lp->spinlock, flags); /* Disable interrupts */ + wv_82593_config(dev); + spin_unlock_irqrestore(&lp->spinlock, flags); /* Re-enable interrupts */ + } + else + { +#ifdef DEBUG_IOCTL_INFO + printk(KERN_DEBUG + "%s: wv_82593_reconfig(): delayed (state = %lX, link = %d)\n", + dev->name, dev->state, link->open); +#endif + } +} + +/********************* DEBUG & INFO SUBROUTINES *********************/ +/* + * This routines are used in the code to show debug informations. + * Most of the time, it dump the content of hardware structures... + */ + +#ifdef DEBUG_PSA_SHOW +/*------------------------------------------------------------------*/ +/* + * Print the formatted contents of the Parameter Storage Area. + */ +static void +wv_psa_show(psa_t * p) +{ + printk(KERN_DEBUG "##### wavelan psa contents: #####\n"); + printk(KERN_DEBUG "psa_io_base_addr_1: 0x%02X %02X %02X %02X\n", + p->psa_io_base_addr_1, + p->psa_io_base_addr_2, + p->psa_io_base_addr_3, + p->psa_io_base_addr_4); + printk(KERN_DEBUG "psa_rem_boot_addr_1: 0x%02X %02X %02X\n", + p->psa_rem_boot_addr_1, + p->psa_rem_boot_addr_2, + p->psa_rem_boot_addr_3); + printk(KERN_DEBUG "psa_holi_params: 0x%02x, ", p->psa_holi_params); + printk("psa_int_req_no: %d\n", p->psa_int_req_no); +#ifdef DEBUG_SHOW_UNUSED + printk(KERN_DEBUG "psa_unused0[]: %pM\n", p->psa_unused0); +#endif /* DEBUG_SHOW_UNUSED */ + printk(KERN_DEBUG "psa_univ_mac_addr[]: %pM\n", p->psa_univ_mac_addr); + printk(KERN_DEBUG "psa_local_mac_addr[]: %pM\n", p->psa_local_mac_addr); + printk(KERN_DEBUG "psa_univ_local_sel: %d, ", p->psa_univ_local_sel); + printk("psa_comp_number: %d, ", p->psa_comp_number); + printk("psa_thr_pre_set: 0x%02x\n", p->psa_thr_pre_set); + printk(KERN_DEBUG "psa_feature_select/decay_prm: 0x%02x, ", + p->psa_feature_select); + printk("psa_subband/decay_update_prm: %d\n", p->psa_subband); + printk(KERN_DEBUG "psa_quality_thr: 0x%02x, ", p->psa_quality_thr); + printk("psa_mod_delay: 0x%02x\n", p->psa_mod_delay); + printk(KERN_DEBUG "psa_nwid: 0x%02x%02x, ", p->psa_nwid[0], p->psa_nwid[1]); + printk("psa_nwid_select: %d\n", p->psa_nwid_select); + printk(KERN_DEBUG "psa_encryption_select: %d, ", p->psa_encryption_select); + printk("psa_encryption_key[]: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", + p->psa_encryption_key[0], + p->psa_encryption_key[1], + p->psa_encryption_key[2], + p->psa_encryption_key[3], + p->psa_encryption_key[4], + p->psa_encryption_key[5], + p->psa_encryption_key[6], + p->psa_encryption_key[7]); + printk(KERN_DEBUG "psa_databus_width: %d\n", p->psa_databus_width); + printk(KERN_DEBUG "psa_call_code/auto_squelch: 0x%02x, ", + p->psa_call_code[0]); + printk("psa_call_code[]: %02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n", + p->psa_call_code[0], + p->psa_call_code[1], + p->psa_call_code[2], + p->psa_call_code[3], + p->psa_call_code[4], + p->psa_call_code[5], + p->psa_call_code[6], + p->psa_call_code[7]); +#ifdef DEBUG_SHOW_UNUSED + printk(KERN_DEBUG "psa_reserved[]: %02X:%02X\n", + p->psa_reserved[0], + p->psa_reserved[1]); +#endif /* DEBUG_SHOW_UNUSED */ + printk(KERN_DEBUG "psa_conf_status: %d, ", p->psa_conf_status); + printk("psa_crc: 0x%02x%02x, ", p->psa_crc[0], p->psa_crc[1]); + printk("psa_crc_status: 0x%02x\n", p->psa_crc_status); +} /* wv_psa_show */ +#endif /* DEBUG_PSA_SHOW */ + +#ifdef DEBUG_MMC_SHOW +/*------------------------------------------------------------------*/ +/* + * Print the formatted status of the Modem Management Controller. + * This function need to be completed... + */ +static void +wv_mmc_show(struct net_device * dev) +{ + unsigned int base = dev->base_addr; + net_local * lp = netdev_priv(dev); + mmr_t m; + + /* Basic check */ + if(hasr_read(base) & HASR_NO_CLK) + { + printk(KERN_WARNING "%s: wv_mmc_show: modem not connected\n", + dev->name); + return; + } + + spin_lock_irqsave(&lp->spinlock, flags); + + /* Read the mmc */ + mmc_out(base, mmwoff(0, mmw_freeze), 1); + mmc_read(base, 0, (u_char *)&m, sizeof(m)); + mmc_out(base, mmwoff(0, mmw_freeze), 0); + + /* Don't forget to update statistics */ + lp->wstats.discard.nwid += (m.mmr_wrong_nwid_h << 8) | m.mmr_wrong_nwid_l; + + spin_unlock_irqrestore(&lp->spinlock, flags); + + printk(KERN_DEBUG "##### wavelan modem status registers: #####\n"); +#ifdef DEBUG_SHOW_UNUSED + printk(KERN_DEBUG "mmc_unused0[]: %02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n", + m.mmr_unused0[0], + m.mmr_unused0[1], + m.mmr_unused0[2], + m.mmr_unused0[3], + m.mmr_unused0[4], + m.mmr_unused0[5], + m.mmr_unused0[6], + m.mmr_unused0[7]); +#endif /* DEBUG_SHOW_UNUSED */ + printk(KERN_DEBUG "Encryption algorithm: %02X - Status: %02X\n", + m.mmr_des_avail, m.mmr_des_status); +#ifdef DEBUG_SHOW_UNUSED + printk(KERN_DEBUG "mmc_unused1[]: %02X:%02X:%02X:%02X:%02X\n", + m.mmr_unused1[0], + m.mmr_unused1[1], + m.mmr_unused1[2], + m.mmr_unused1[3], + m.mmr_unused1[4]); +#endif /* DEBUG_SHOW_UNUSED */ + printk(KERN_DEBUG "dce_status: 0x%x [%s%s%s%s]\n", + m.mmr_dce_status, + (m.mmr_dce_status & MMR_DCE_STATUS_RX_BUSY) ? "energy detected,":"", + (m.mmr_dce_status & MMR_DCE_STATUS_LOOPT_IND) ? + "loop test indicated," : "", + (m.mmr_dce_status & MMR_DCE_STATUS_TX_BUSY) ? "transmitter on," : "", + (m.mmr_dce_status & MMR_DCE_STATUS_JBR_EXPIRED) ? + "jabber timer expired," : ""); + printk(KERN_DEBUG "Dsp ID: %02X\n", + m.mmr_dsp_id); +#ifdef DEBUG_SHOW_UNUSED + printk(KERN_DEBUG "mmc_unused2[]: %02X:%02X\n", + m.mmr_unused2[0], + m.mmr_unused2[1]); +#endif /* DEBUG_SHOW_UNUSED */ + printk(KERN_DEBUG "# correct_nwid: %d, # wrong_nwid: %d\n", + (m.mmr_correct_nwid_h << 8) | m.mmr_correct_nwid_l, + (m.mmr_wrong_nwid_h << 8) | m.mmr_wrong_nwid_l); + printk(KERN_DEBUG "thr_pre_set: 0x%x [current signal %s]\n", + m.mmr_thr_pre_set & MMR_THR_PRE_SET, + (m.mmr_thr_pre_set & MMR_THR_PRE_SET_CUR) ? "above" : "below"); + printk(KERN_DEBUG "signal_lvl: %d [%s], ", + m.mmr_signal_lvl & MMR_SIGNAL_LVL, + (m.mmr_signal_lvl & MMR_SIGNAL_LVL_VALID) ? "new msg" : "no new msg"); + printk("silence_lvl: %d [%s], ", m.mmr_silence_lvl & MMR_SILENCE_LVL, + (m.mmr_silence_lvl & MMR_SILENCE_LVL_VALID) ? "update done" : "no new update"); + printk("sgnl_qual: 0x%x [%s]\n", m.mmr_sgnl_qual & MMR_SGNL_QUAL, + (m.mmr_sgnl_qual & MMR_SGNL_QUAL_ANT) ? "Antenna 1" : "Antenna 0"); +#ifdef DEBUG_SHOW_UNUSED + printk(KERN_DEBUG "netw_id_l: %x\n", m.mmr_netw_id_l); +#endif /* DEBUG_SHOW_UNUSED */ +} /* wv_mmc_show */ +#endif /* DEBUG_MMC_SHOW */ + +#ifdef DEBUG_I82593_SHOW +/*------------------------------------------------------------------*/ +/* + * Print the formatted status of the i82593's receive unit. + */ +static void +wv_ru_show(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + + printk(KERN_DEBUG "##### wavelan i82593 receiver status: #####\n"); + printk(KERN_DEBUG "ru: rfp %d stop %d", lp->rfp, lp->stop); + /* + * Not implemented yet... + */ + printk("\n"); +} /* wv_ru_show */ +#endif /* DEBUG_I82593_SHOW */ + +#ifdef DEBUG_DEVICE_SHOW +/*------------------------------------------------------------------*/ +/* + * Print the formatted status of the WaveLAN PCMCIA device driver. + */ +static void +wv_dev_show(struct net_device * dev) +{ + printk(KERN_DEBUG "dev:"); + printk(" state=%lX,", dev->state); + printk(" trans_start=%ld,", dev->trans_start); + printk(" flags=0x%x,", dev->flags); + printk("\n"); +} /* wv_dev_show */ + +/*------------------------------------------------------------------*/ +/* + * Print the formatted status of the WaveLAN PCMCIA device driver's + * private information. + */ +static void +wv_local_show(struct net_device * dev) +{ + net_local *lp = netdev_priv(dev); + + printk(KERN_DEBUG "local:"); + /* + * Not implemented yet... + */ + printk("\n"); +} /* wv_local_show */ +#endif /* DEBUG_DEVICE_SHOW */ + +#if defined(DEBUG_RX_INFO) || defined(DEBUG_TX_INFO) +/*------------------------------------------------------------------*/ +/* + * Dump packet header (and content if necessary) on the screen + */ +static void +wv_packet_info(u_char * p, /* Packet to dump */ + int length, /* Length of the packet */ + char * msg1, /* Name of the device */ + char * msg2) /* Name of the function */ +{ + int i; + int maxi; + + printk(KERN_DEBUG "%s: %s(): dest %pM, length %d\n", + msg1, msg2, p, length); + printk(KERN_DEBUG "%s: %s(): src %pM, type 0x%02X%02X\n", + msg1, msg2, &p[6], p[12], p[13]); + +#ifdef DEBUG_PACKET_DUMP + + printk(KERN_DEBUG "data=\""); + + if((maxi = length) > DEBUG_PACKET_DUMP) + maxi = DEBUG_PACKET_DUMP; + for(i = 14; i < maxi; i++) + if(p[i] >= ' ' && p[i] <= '~') + printk(" %c", p[i]); + else + printk("%02X", p[i]); + if(maxi < length) + printk(".."); + printk("\"\n"); + printk(KERN_DEBUG "\n"); +#endif /* DEBUG_PACKET_DUMP */ +} +#endif /* defined(DEBUG_RX_INFO) || defined(DEBUG_TX_INFO) */ + +/*------------------------------------------------------------------*/ +/* + * This is the information which is displayed by the driver at startup + * There is a lot of flag to configure it at your will... + */ +static void +wv_init_info(struct net_device * dev) +{ + unsigned int base = dev->base_addr; + psa_t psa; + + /* Read the parameter storage area */ + psa_read(dev, 0, (unsigned char *) &psa, sizeof(psa)); + +#ifdef DEBUG_PSA_SHOW + wv_psa_show(&psa); +#endif +#ifdef DEBUG_MMC_SHOW + wv_mmc_show(dev); +#endif +#ifdef DEBUG_I82593_SHOW + wv_ru_show(dev); +#endif + +#ifdef DEBUG_BASIC_SHOW + /* Now, let's go for the basic stuff */ + printk(KERN_NOTICE "%s: WaveLAN: port %#x, irq %d, hw_addr %pM", + dev->name, base, dev->irq, dev->dev_addr); + + /* Print current network id */ + if(psa.psa_nwid_select) + printk(", nwid 0x%02X-%02X", psa.psa_nwid[0], psa.psa_nwid[1]); + else + printk(", nwid off"); + + /* If 2.00 card */ + if(!(mmc_in(base, mmroff(0, mmr_fee_status)) & + (MMR_FEE_STATUS_DWLD | MMR_FEE_STATUS_BUSY))) + { + unsigned short freq; + + /* Ask the EEprom to read the frequency from the first area */ + fee_read(base, 0x00 /* 1st area - frequency... */, + &freq, 1); + + /* Print frequency */ + printk(", 2.00, %ld", (freq >> 6) + 2400L); + + /* Hack !!! */ + if(freq & 0x20) + printk(".5"); + } + else + { + printk(", PCMCIA, "); + switch (psa.psa_subband) + { + case PSA_SUBBAND_915: + printk("915"); + break; + case PSA_SUBBAND_2425: + printk("2425"); + break; + case PSA_SUBBAND_2460: + printk("2460"); + break; + case PSA_SUBBAND_2484: + printk("2484"); + break; + case PSA_SUBBAND_2430_5: + printk("2430.5"); + break; + default: + printk("unknown"); + } + } + + printk(" MHz\n"); +#endif /* DEBUG_BASIC_SHOW */ + +#ifdef DEBUG_VERSION_SHOW + /* Print version information */ + printk(KERN_NOTICE "%s", version); +#endif +} /* wv_init_info */ + +/********************* IOCTL, STATS & RECONFIG *********************/ +/* + * We found here routines that are called by Linux on differents + * occasions after the configuration and not for transmitting data + * These may be called when the user use ifconfig, /proc/net/dev + * or wireless extensions + */ + + +/*------------------------------------------------------------------*/ +/* + * Set or clear the multicast filter for this adaptor. + * num_addrs == -1 Promiscuous mode, receive all packets + * num_addrs == 0 Normal mode, clear multicast list + * num_addrs > 0 Multicast mode, receive normal and MC packets, + * and do best-effort filtering. + */ + +static void +wavelan_set_multicast_list(struct net_device * dev) +{ + net_local * lp = netdev_priv(dev); + +#ifdef DEBUG_IOCTL_TRACE + printk(KERN_DEBUG "%s: ->wavelan_set_multicast_list()\n", dev->name); +#endif + +#ifdef DEBUG_IOCTL_INFO + printk(KERN_DEBUG "%s: wavelan_set_multicast_list(): setting Rx mode %02X to %d addresses.\n", + dev->name, dev->flags, dev->mc_count); +#endif + + if(dev->flags & IFF_PROMISC) + { + /* + * Enable promiscuous mode: receive all packets. + */ + if(!lp->promiscuous) + { + lp->promiscuous = 1; + lp->allmulticast = 0; + lp->mc_count = 0; + + wv_82593_reconfig(dev); + } + } + else + /* If all multicast addresses + * or too much multicast addresses for the hardware filter */ + if((dev->flags & IFF_ALLMULTI) || + (dev->mc_count > I82593_MAX_MULTICAST_ADDRESSES)) + { + /* + * Disable promiscuous mode, but active the all multicast mode + */ + if(!lp->allmulticast) + { + lp->promiscuous = 0; + lp->allmulticast = 1; + lp->mc_count = 0; + + wv_82593_reconfig(dev); + } + } + else + /* If there is some multicast addresses to send */ + if(dev->mc_list != (struct dev_mc_list *) NULL) + { + /* + * Disable promiscuous mode, but receive all packets + * in multicast list + */ +#ifdef MULTICAST_AVOID + if(lp->promiscuous || lp->allmulticast || + (dev->mc_count != lp->mc_count)) +#endif + { + lp->promiscuous = 0; + lp->allmulticast = 0; + lp->mc_count = dev->mc_count; + + wv_82593_reconfig(dev); + } + } + else + { + /* + * Switch to normal mode: disable promiscuous mode and + * clear the multicast list. + */ + if(lp->promiscuous || lp->mc_count == 0) + { + lp->promiscuous = 0; + lp->allmulticast = 0; + lp->mc_count = 0; + + wv_82593_reconfig(dev); + } + } +#ifdef DEBUG_IOCTL_TRACE + printk(KERN_DEBUG "%s: <-wavelan_set_multicast_list()\n", dev->name); +#endif +} + +/*------------------------------------------------------------------*/ +/* + * This function doesn't exist... + * (Note : it was a nice way to test the reconfigure stuff...) + */ +#ifdef SET_MAC_ADDRESS +static int +wavelan_set_mac_address(struct net_device * dev, + void * addr) +{ + struct sockaddr * mac = addr; + + /* Copy the address */ + memcpy(dev->dev_addr, mac->sa_data, WAVELAN_ADDR_SIZE); + + /* Reconfig the beast */ + wv_82593_reconfig(dev); + + return 0; +} +#endif /* SET_MAC_ADDRESS */ + + +/*------------------------------------------------------------------*/ +/* + * Frequency setting (for hardware able of it) + * It's a bit complicated and you don't really want to look into it... + */ +static int +wv_set_frequency(u_long base, /* i/o port of the card */ + iw_freq * frequency) +{ + const int BAND_NUM = 10; /* Number of bands */ + long freq = 0L; /* offset to 2.4 GHz in .5 MHz */ +#ifdef DEBUG_IOCTL_INFO + int i; +#endif + + /* Setting by frequency */ + /* Theoritically, you may set any frequency between + * the two limits with a 0.5 MHz precision. In practice, + * I don't want you to have trouble with local + * regulations... */ + if((frequency->e == 1) && + (frequency->m >= (int) 2.412e8) && (frequency->m <= (int) 2.487e8)) + { + freq = ((frequency->m / 10000) - 24000L) / 5; + } + + /* Setting by channel (same as wfreqsel) */ + /* Warning : each channel is 22MHz wide, so some of the channels + * will interfere... */ + if((frequency->e == 0) && + (frequency->m >= 0) && (frequency->m < BAND_NUM)) + { + /* Get frequency offset. */ + freq = channel_bands[frequency->m] >> 1; + } + + /* Verify if the frequency is allowed */ + if(freq != 0L) + { + u_short table[10]; /* Authorized frequency table */ + + /* Read the frequency table */ + fee_read(base, 0x71 /* frequency table */, + table, 10); + +#ifdef DEBUG_IOCTL_INFO + printk(KERN_DEBUG "Frequency table :"); + for(i = 0; i < 10; i++) + { + printk(" %04X", + table[i]); + } + printk("\n"); +#endif + + /* Look in the table if the frequency is allowed */ + if(!(table[9 - ((freq - 24) / 16)] & + (1 << ((freq - 24) % 16)))) + return -EINVAL; /* not allowed */ + } + else + return -EINVAL; + + /* If we get a usable frequency */ + if(freq != 0L) + { + unsigned short area[16]; + unsigned short dac[2]; + unsigned short area_verify[16]; + unsigned short dac_verify[2]; + /* Corresponding gain (in the power adjust value table) + * see AT&T Wavelan Data Manual, REF 407-024689/E, page 3-8 + * & WCIN062D.DOC, page 6.2.9 */ + unsigned short power_limit[] = { 40, 80, 120, 160, 0 }; + int power_band = 0; /* Selected band */ + unsigned short power_adjust; /* Correct value */ + + /* Search for the gain */ + power_band = 0; + while((freq > power_limit[power_band]) && + (power_limit[++power_band] != 0)) + ; + + /* Read the first area */ + fee_read(base, 0x00, + area, 16); + + /* Read the DAC */ + fee_read(base, 0x60, + dac, 2); + + /* Read the new power adjust value */ + fee_read(base, 0x6B - (power_band >> 1), + &power_adjust, 1); + if(power_band & 0x1) + power_adjust >>= 8; + else + power_adjust &= 0xFF; + +#ifdef DEBUG_IOCTL_INFO + printk(KERN_DEBUG "Wavelan EEprom Area 1 :"); + for(i = 0; i < 16; i++) + { + printk(" %04X", + area[i]); + } + printk("\n"); + + printk(KERN_DEBUG "Wavelan EEprom DAC : %04X %04X\n", + dac[0], dac[1]); +#endif + + /* Frequency offset (for info only...) */ + area[0] = ((freq << 5) & 0xFFE0) | (area[0] & 0x1F); + + /* Receiver Principle main divider coefficient */ + area[3] = (freq >> 1) + 2400L - 352L; + area[2] = ((freq & 0x1) << 4) | (area[2] & 0xFFEF); + + /* Transmitter Main divider coefficient */ + area[13] = (freq >> 1) + 2400L; + area[12] = ((freq & 0x1) << 4) | (area[2] & 0xFFEF); + + /* Others part of the area are flags, bit streams or unused... */ + + /* Set the value in the DAC */ + dac[1] = ((power_adjust >> 1) & 0x7F) | (dac[1] & 0xFF80); + dac[0] = ((power_adjust & 0x1) << 4) | (dac[0] & 0xFFEF); + + /* Write the first area */ + fee_write(base, 0x00, + area, 16); + + /* Write the DAC */ + fee_write(base, 0x60, + dac, 2); + + /* We now should verify here that the EEprom writing was ok */ + + /* ReRead the first area */ + fee_read(base, 0x00, + area_verify, 16); + + /* ReRead the DAC */ + fee_read(base, 0x60, + dac_verify, 2); + + /* Compare */ + if(memcmp(area, area_verify, 16 * 2) || + memcmp(dac, dac_verify, 2 * 2)) + { +#ifdef DEBUG_IOCTL_ERROR + printk(KERN_INFO "Wavelan: wv_set_frequency : unable to write new frequency to EEprom (?)\n"); +#endif + return -EOPNOTSUPP; + } + + /* We must download the frequency parameters to the + * synthetisers (from the EEprom - area 1) + * Note : as the EEprom is auto decremented, we set the end + * if the area... */ + mmc_out(base, mmwoff(0, mmw_fee_addr), 0x0F); + mmc_out(base, mmwoff(0, mmw_fee_ctrl), + MMW_FEE_CTRL_READ | MMW_FEE_CTRL_DWLD); + + /* Wait until the download is finished */ + fee_wait(base, 100, 100); + + /* We must now download the power adjust value (gain) to + * the synthetisers (from the EEprom - area 7 - DAC) */ + mmc_out(base, mmwoff(0, mmw_fee_addr), 0x61); + mmc_out(base, mmwoff(0, mmw_fee_ctrl), + MMW_FEE_CTRL_READ | MMW_FEE_CTRL_DWLD); + + /* Wait until the download is finished */ + fee_wait(base, 100, 100); + +#ifdef DEBUG_IOCTL_INFO + /* Verification of what we have done... */ + + printk(KERN_DEBUG "Wavelan EEprom Area 1 :"); + for(i = 0; i < 16; i++) + { + printk(" %04X", + area_verify[i]); + } + printk("\n"); + + printk(KERN_DEBUG "Wavelan EEprom DAC : %04X %04X\n", + dac_verify[0], dac_verify[1]); +#endif + + return 0; + } + else + return -EINVAL; /* Bah, never get there... */ +} + +/*------------------------------------------------------------------*/ +/* + * Give the list of available frequencies + */ +static int +wv_frequency_list(u_long base, /* i/o port of the card */ + iw_freq * list, /* List of frequency to fill */ + int max) /* Maximum number of frequencies */ +{ + u_short table[10]; /* Authorized frequency table */ + long freq = 0L; /* offset to 2.4 GHz in .5 MHz + 12 MHz */ + int i; /* index in the table */ + const int BAND_NUM = 10; /* Number of bands */ + int c = 0; /* Channel number */ + + /* Read the frequency table */ + fee_read(base, 0x71 /* frequency table */, + table, 10); + + /* Look all frequencies */ + i = 0; + for(freq = 0; freq < 150; freq++) + /* Look in the table if the frequency is allowed */ + if(table[9 - (freq / 16)] & (1 << (freq % 16))) + { + /* Compute approximate channel number */ + while((((channel_bands[c] >> 1) - 24) < freq) && + (c < BAND_NUM)) + c++; + list[i].i = c; /* Set the list index */ + + /* put in the list */ + list[i].m = (((freq + 24) * 5) + 24000L) * 10000; + list[i++].e = 1; + + /* Check number */ + if(i >= max) + return(i); + } + + return(i); +} + +#ifdef IW_WIRELESS_SPY +/*------------------------------------------------------------------*/ +/* + * Gather wireless spy statistics : for each packet, compare the source + * address with out list, and if match, get the stats... + * Sorry, but this function really need wireless extensions... + */ +static inline void +wl_spy_gather(struct net_device * dev, + u_char * mac, /* MAC address */ + u_char * stats) /* Statistics to gather */ +{ + struct iw_quality wstats; + + wstats.qual = stats[2] & MMR_SGNL_QUAL; + wstats.level = stats[0] & MMR_SIGNAL_LVL; + wstats.noise = stats[1] & MMR_SILENCE_LVL; + wstats.updated = 0x7; + + /* Update spy records */ + wireless_spy_update(dev, mac, &wstats); +} +#endif /* IW_WIRELESS_SPY */ + +#ifdef HISTOGRAM +/*------------------------------------------------------------------*/ +/* + * This function calculate an histogram on the signal level. + * As the noise is quite constant, it's like doing it on the SNR. + * We have defined a set of interval (lp->his_range), and each time + * the level goes in that interval, we increment the count (lp->his_sum). + * With this histogram you may detect if one wavelan is really weak, + * or you may also calculate the mean and standard deviation of the level... + */ +static inline void +wl_his_gather(struct net_device * dev, + u_char * stats) /* Statistics to gather */ +{ + net_local * lp = netdev_priv(dev); + u_char level = stats[0] & MMR_SIGNAL_LVL; + int i; + + /* Find the correct interval */ + i = 0; + while((i < (lp->his_number - 1)) && (level >= lp->his_range[i++])) + ; + + /* Increment interval counter */ + (lp->his_sum[i])++; +} +#endif /* HISTOGRAM */ + +static void wl_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) +{ + strncpy(info->driver, "wavelan_cs", sizeof(info->driver)-1); +} + +static const struct ethtool_ops ops = { + .get_drvinfo = wl_get_drvinfo +}; + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : get protocol name + */ +static int wavelan_get_name(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + strcpy(wrqu->name, "WaveLAN"); + return 0; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : set NWID + */ +static int wavelan_set_nwid(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned int base = dev->base_addr; + net_local *lp = netdev_priv(dev); + psa_t psa; + mm_t m; + unsigned long flags; + int ret = 0; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Set NWID in WaveLAN. */ + if (!wrqu->nwid.disabled) { + /* Set NWID in psa */ + psa.psa_nwid[0] = (wrqu->nwid.value & 0xFF00) >> 8; + psa.psa_nwid[1] = wrqu->nwid.value & 0xFF; + psa.psa_nwid_select = 0x01; + psa_write(dev, + (char *) psa.psa_nwid - (char *) &psa, + (unsigned char *) psa.psa_nwid, 3); + + /* Set NWID in mmc. */ + m.w.mmw_netw_id_l = psa.psa_nwid[1]; + m.w.mmw_netw_id_h = psa.psa_nwid[0]; + mmc_write(base, + (char *) &m.w.mmw_netw_id_l - + (char *) &m, + (unsigned char *) &m.w.mmw_netw_id_l, 2); + mmc_out(base, mmwoff(0, mmw_loopt_sel), 0x00); + } else { + /* Disable NWID in the psa. */ + psa.psa_nwid_select = 0x00; + psa_write(dev, + (char *) &psa.psa_nwid_select - + (char *) &psa, + (unsigned char *) &psa.psa_nwid_select, + 1); + + /* Disable NWID in the mmc (no filtering). */ + mmc_out(base, mmwoff(0, mmw_loopt_sel), + MMW_LOOPT_SEL_DIS_NWID); + } + /* update the Wavelan checksum */ + update_psa_checksum(dev); + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : get NWID + */ +static int wavelan_get_nwid(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + net_local *lp = netdev_priv(dev); + psa_t psa; + unsigned long flags; + int ret = 0; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Read the NWID. */ + psa_read(dev, + (char *) psa.psa_nwid - (char *) &psa, + (unsigned char *) psa.psa_nwid, 3); + wrqu->nwid.value = (psa.psa_nwid[0] << 8) + psa.psa_nwid[1]; + wrqu->nwid.disabled = !(psa.psa_nwid_select); + wrqu->nwid.fixed = 1; /* Superfluous */ + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : set frequency + */ +static int wavelan_set_freq(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned int base = dev->base_addr; + net_local *lp = netdev_priv(dev); + unsigned long flags; + int ret; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Attempt to recognise 2.00 cards (2.4 GHz frequency selectable). */ + if (!(mmc_in(base, mmroff(0, mmr_fee_status)) & + (MMR_FEE_STATUS_DWLD | MMR_FEE_STATUS_BUSY))) + ret = wv_set_frequency(base, &(wrqu->freq)); + else + ret = -EOPNOTSUPP; + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : get frequency + */ +static int wavelan_get_freq(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned int base = dev->base_addr; + net_local *lp = netdev_priv(dev); + psa_t psa; + unsigned long flags; + int ret = 0; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Attempt to recognise 2.00 cards (2.4 GHz frequency selectable). + * Does it work for everybody, especially old cards? */ + if (!(mmc_in(base, mmroff(0, mmr_fee_status)) & + (MMR_FEE_STATUS_DWLD | MMR_FEE_STATUS_BUSY))) { + unsigned short freq; + + /* Ask the EEPROM to read the frequency from the first area. */ + fee_read(base, 0x00, &freq, 1); + wrqu->freq.m = ((freq >> 5) * 5 + 24000L) * 10000; + wrqu->freq.e = 1; + } else { + psa_read(dev, + (char *) &psa.psa_subband - (char *) &psa, + (unsigned char *) &psa.psa_subband, 1); + + if (psa.psa_subband <= 4) { + wrqu->freq.m = fixed_bands[psa.psa_subband]; + wrqu->freq.e = (psa.psa_subband != 0); + } else + ret = -EOPNOTSUPP; + } + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : set level threshold + */ +static int wavelan_set_sens(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned int base = dev->base_addr; + net_local *lp = netdev_priv(dev); + psa_t psa; + unsigned long flags; + int ret = 0; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Set the level threshold. */ + /* We should complain loudly if wrqu->sens.fixed = 0, because we + * can't set auto mode... */ + psa.psa_thr_pre_set = wrqu->sens.value & 0x3F; + psa_write(dev, + (char *) &psa.psa_thr_pre_set - (char *) &psa, + (unsigned char *) &psa.psa_thr_pre_set, 1); + /* update the Wavelan checksum */ + update_psa_checksum(dev); + mmc_out(base, mmwoff(0, mmw_thr_pre_set), + psa.psa_thr_pre_set); + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : get level threshold + */ +static int wavelan_get_sens(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + net_local *lp = netdev_priv(dev); + psa_t psa; + unsigned long flags; + int ret = 0; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Read the level threshold. */ + psa_read(dev, + (char *) &psa.psa_thr_pre_set - (char *) &psa, + (unsigned char *) &psa.psa_thr_pre_set, 1); + wrqu->sens.value = psa.psa_thr_pre_set & 0x3F; + wrqu->sens.fixed = 1; + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : set encryption key + */ +static int wavelan_set_encode(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned int base = dev->base_addr; + net_local *lp = netdev_priv(dev); + unsigned long flags; + psa_t psa; + int ret = 0; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Check if capable of encryption */ + if (!mmc_encr(base)) { + ret = -EOPNOTSUPP; + } + + /* Check the size of the key */ + if((wrqu->encoding.length != 8) && (wrqu->encoding.length != 0)) { + ret = -EINVAL; + } + + if(!ret) { + /* Basic checking... */ + if (wrqu->encoding.length == 8) { + /* Copy the key in the driver */ + memcpy(psa.psa_encryption_key, extra, + wrqu->encoding.length); + psa.psa_encryption_select = 1; + + psa_write(dev, + (char *) &psa.psa_encryption_select - + (char *) &psa, + (unsigned char *) &psa. + psa_encryption_select, 8 + 1); + + mmc_out(base, mmwoff(0, mmw_encr_enable), + MMW_ENCR_ENABLE_EN | MMW_ENCR_ENABLE_MODE); + mmc_write(base, mmwoff(0, mmw_encr_key), + (unsigned char *) &psa. + psa_encryption_key, 8); + } + + /* disable encryption */ + if (wrqu->encoding.flags & IW_ENCODE_DISABLED) { + psa.psa_encryption_select = 0; + psa_write(dev, + (char *) &psa.psa_encryption_select - + (char *) &psa, + (unsigned char *) &psa. + psa_encryption_select, 1); + + mmc_out(base, mmwoff(0, mmw_encr_enable), 0); + } + /* update the Wavelan checksum */ + update_psa_checksum(dev); + } + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : get encryption key + */ +static int wavelan_get_encode(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned int base = dev->base_addr; + net_local *lp = netdev_priv(dev); + psa_t psa; + unsigned long flags; + int ret = 0; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Check if encryption is available */ + if (!mmc_encr(base)) { + ret = -EOPNOTSUPP; + } else { + /* Read the encryption key */ + psa_read(dev, + (char *) &psa.psa_encryption_select - + (char *) &psa, + (unsigned char *) &psa. + psa_encryption_select, 1 + 8); + + /* encryption is enabled ? */ + if (psa.psa_encryption_select) + wrqu->encoding.flags = IW_ENCODE_ENABLED; + else + wrqu->encoding.flags = IW_ENCODE_DISABLED; + wrqu->encoding.flags |= mmc_encr(base); + + /* Copy the key to the user buffer */ + wrqu->encoding.length = 8; + memcpy(extra, psa.psa_encryption_key, wrqu->encoding.length); + } + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +#ifdef WAVELAN_ROAMING_EXT +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : set ESSID (domain) + */ +static int wavelan_set_essid(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + net_local *lp = netdev_priv(dev); + unsigned long flags; + int ret = 0; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Check if disable */ + if(wrqu->data.flags == 0) + lp->filter_domains = 0; + else { + char essid[IW_ESSID_MAX_SIZE + 1]; + char * endp; + + /* Terminate the string */ + memcpy(essid, extra, wrqu->data.length); + essid[IW_ESSID_MAX_SIZE] = '\0'; + +#ifdef DEBUG_IOCTL_INFO + printk(KERN_DEBUG "SetEssid : ``%s''\n", essid); +#endif /* DEBUG_IOCTL_INFO */ + + /* Convert to a number (note : Wavelan specific) */ + lp->domain_id = simple_strtoul(essid, &endp, 16); + /* Has it worked ? */ + if(endp > essid) + lp->filter_domains = 1; + else { + lp->filter_domains = 0; + ret = -EINVAL; + } + } + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : get ESSID (domain) + */ +static int wavelan_get_essid(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + net_local *lp = netdev_priv(dev); + + /* Is the domain ID active ? */ + wrqu->data.flags = lp->filter_domains; + + /* Copy Domain ID into a string (Wavelan specific) */ + /* Sound crazy, be we can't have a snprintf in the kernel !!! */ + sprintf(extra, "%lX", lp->domain_id); + extra[IW_ESSID_MAX_SIZE] = '\0'; + + /* Set the length */ + wrqu->data.length = strlen(extra); + + return 0; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : set AP address + */ +static int wavelan_set_wap(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ +#ifdef DEBUG_IOCTL_INFO + printk(KERN_DEBUG "Set AP to : %pM\n", wrqu->ap_addr.sa_data); +#endif /* DEBUG_IOCTL_INFO */ + + return -EOPNOTSUPP; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : get AP address + */ +static int wavelan_get_wap(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + /* Should get the real McCoy instead of own Ethernet address */ + memcpy(wrqu->ap_addr.sa_data, dev->dev_addr, WAVELAN_ADDR_SIZE); + wrqu->ap_addr.sa_family = ARPHRD_ETHER; + + return -EOPNOTSUPP; +} +#endif /* WAVELAN_ROAMING_EXT */ + +#ifdef WAVELAN_ROAMING +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : set mode + */ +static int wavelan_set_mode(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + net_local *lp = netdev_priv(dev); + unsigned long flags; + int ret = 0; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Check mode */ + switch(wrqu->mode) { + case IW_MODE_ADHOC: + if(do_roaming) { + wv_roam_cleanup(dev); + do_roaming = 0; + } + break; + case IW_MODE_INFRA: + if(!do_roaming) { + wv_roam_init(dev); + do_roaming = 1; + } + break; + default: + ret = -EINVAL; + } + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : get mode + */ +static int wavelan_get_mode(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + if(do_roaming) + wrqu->mode = IW_MODE_INFRA; + else + wrqu->mode = IW_MODE_ADHOC; + + return 0; +} +#endif /* WAVELAN_ROAMING */ + +/*------------------------------------------------------------------*/ +/* + * Wireless Handler : get range info + */ +static int wavelan_get_range(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned int base = dev->base_addr; + net_local *lp = netdev_priv(dev); + struct iw_range *range = (struct iw_range *) extra; + unsigned long flags; + int ret = 0; + + /* Set the length (very important for backward compatibility) */ + wrqu->data.length = sizeof(struct iw_range); + + /* Set all the info we don't care or don't know about to zero */ + memset(range, 0, sizeof(struct iw_range)); + + /* Set the Wireless Extension versions */ + range->we_version_compiled = WIRELESS_EXT; + range->we_version_source = 9; + + /* Set information in the range struct. */ + range->throughput = 1.4 * 1000 * 1000; /* don't argue on this ! */ + range->min_nwid = 0x0000; + range->max_nwid = 0xFFFF; + + range->sensitivity = 0x3F; + range->max_qual.qual = MMR_SGNL_QUAL; + range->max_qual.level = MMR_SIGNAL_LVL; + range->max_qual.noise = MMR_SILENCE_LVL; + range->avg_qual.qual = MMR_SGNL_QUAL; /* Always max */ + /* Need to get better values for those two */ + range->avg_qual.level = 30; + range->avg_qual.noise = 8; + + range->num_bitrates = 1; + range->bitrate[0] = 2000000; /* 2 Mb/s */ + + /* Event capability (kernel + driver) */ + range->event_capa[0] = (IW_EVENT_CAPA_MASK(0x8B02) | + IW_EVENT_CAPA_MASK(0x8B04) | + IW_EVENT_CAPA_MASK(0x8B06)); + range->event_capa[1] = IW_EVENT_CAPA_K_1; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Attempt to recognise 2.00 cards (2.4 GHz frequency selectable). */ + if (!(mmc_in(base, mmroff(0, mmr_fee_status)) & + (MMR_FEE_STATUS_DWLD | MMR_FEE_STATUS_BUSY))) { + range->num_channels = 10; + range->num_frequency = wv_frequency_list(base, range->freq, + IW_MAX_FREQUENCIES); + } else + range->num_channels = range->num_frequency = 0; + + /* Encryption supported ? */ + if (mmc_encr(base)) { + range->encoding_size[0] = 8; /* DES = 64 bits key */ + range->num_encoding_sizes = 1; + range->max_encoding_tokens = 1; /* Only one key possible */ + } else { + range->num_encoding_sizes = 0; + range->max_encoding_tokens = 0; + } + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return ret; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Private Handler : set quality threshold + */ +static int wavelan_set_qthr(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned int base = dev->base_addr; + net_local *lp = netdev_priv(dev); + psa_t psa; + unsigned long flags; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + psa.psa_quality_thr = *(extra) & 0x0F; + psa_write(dev, + (char *) &psa.psa_quality_thr - (char *) &psa, + (unsigned char *) &psa.psa_quality_thr, 1); + /* update the Wavelan checksum */ + update_psa_checksum(dev); + mmc_out(base, mmwoff(0, mmw_quality_thr), + psa.psa_quality_thr); + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return 0; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Private Handler : get quality threshold + */ +static int wavelan_get_qthr(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + net_local *lp = netdev_priv(dev); + psa_t psa; + unsigned long flags; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + psa_read(dev, + (char *) &psa.psa_quality_thr - (char *) &psa, + (unsigned char *) &psa.psa_quality_thr, 1); + *(extra) = psa.psa_quality_thr & 0x0F; + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return 0; +} + +#ifdef WAVELAN_ROAMING +/*------------------------------------------------------------------*/ +/* + * Wireless Private Handler : set roaming + */ +static int wavelan_set_roam(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + net_local *lp = netdev_priv(dev); + unsigned long flags; + + /* Disable interrupts and save flags. */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Note : should check if user == root */ + if(do_roaming && (*extra)==0) + wv_roam_cleanup(dev); + else if(do_roaming==0 && (*extra)!=0) + wv_roam_init(dev); + + do_roaming = (*extra); + + /* Enable interrupts and restore flags. */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + return 0; +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Private Handler : get quality threshold + */ +static int wavelan_get_roam(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + *(extra) = do_roaming; + + return 0; +} +#endif /* WAVELAN_ROAMING */ + +#ifdef HISTOGRAM +/*------------------------------------------------------------------*/ +/* + * Wireless Private Handler : set histogram + */ +static int wavelan_set_histo(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + net_local *lp = netdev_priv(dev); + + /* Check the number of intervals. */ + if (wrqu->data.length > 16) { + return(-E2BIG); + } + + /* Disable histo while we copy the addresses. + * As we don't disable interrupts, we need to do this */ + lp->his_number = 0; + + /* Are there ranges to copy? */ + if (wrqu->data.length > 0) { + /* Copy interval ranges to the driver */ + memcpy(lp->his_range, extra, wrqu->data.length); + + { + int i; + printk(KERN_DEBUG "Histo :"); + for(i = 0; i < wrqu->data.length; i++) + printk(" %d", lp->his_range[i]); + printk("\n"); + } + + /* Reset result structure. */ + memset(lp->his_sum, 0x00, sizeof(long) * 16); + } + + /* Now we can set the number of ranges */ + lp->his_number = wrqu->data.length; + + return(0); +} + +/*------------------------------------------------------------------*/ +/* + * Wireless Private Handler : get histogram + */ +static int wavelan_get_histo(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + net_local *lp = netdev_priv(dev); + + /* Set the number of intervals. */ + wrqu->data.length = lp->his_number; + + /* Give back the distribution statistics */ + if(lp->his_number > 0) + memcpy(extra, lp->his_sum, sizeof(long) * lp->his_number); + + return(0); +} +#endif /* HISTOGRAM */ + +/*------------------------------------------------------------------*/ +/* + * Structures to export the Wireless Handlers + */ + +static const struct iw_priv_args wavelan_private_args[] = { +/*{ cmd, set_args, get_args, name } */ + { SIOCSIPQTHR, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | 1, 0, "setqualthr" }, + { SIOCGIPQTHR, 0, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | 1, "getqualthr" }, + { SIOCSIPROAM, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | 1, 0, "setroam" }, + { SIOCGIPROAM, 0, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | 1, "getroam" }, + { SIOCSIPHISTO, IW_PRIV_TYPE_BYTE | 16, 0, "sethisto" }, + { SIOCGIPHISTO, 0, IW_PRIV_TYPE_INT | 16, "gethisto" }, +}; + +static const iw_handler wavelan_handler[] = +{ + NULL, /* SIOCSIWNAME */ + wavelan_get_name, /* SIOCGIWNAME */ + wavelan_set_nwid, /* SIOCSIWNWID */ + wavelan_get_nwid, /* SIOCGIWNWID */ + wavelan_set_freq, /* SIOCSIWFREQ */ + wavelan_get_freq, /* SIOCGIWFREQ */ +#ifdef WAVELAN_ROAMING + wavelan_set_mode, /* SIOCSIWMODE */ + wavelan_get_mode, /* SIOCGIWMODE */ +#else /* WAVELAN_ROAMING */ + NULL, /* SIOCSIWMODE */ + NULL, /* SIOCGIWMODE */ +#endif /* WAVELAN_ROAMING */ + wavelan_set_sens, /* SIOCSIWSENS */ + wavelan_get_sens, /* SIOCGIWSENS */ + NULL, /* SIOCSIWRANGE */ + wavelan_get_range, /* SIOCGIWRANGE */ + NULL, /* SIOCSIWPRIV */ + NULL, /* SIOCGIWPRIV */ + NULL, /* SIOCSIWSTATS */ + NULL, /* SIOCGIWSTATS */ + iw_handler_set_spy, /* SIOCSIWSPY */ + iw_handler_get_spy, /* SIOCGIWSPY */ + iw_handler_set_thrspy, /* SIOCSIWTHRSPY */ + iw_handler_get_thrspy, /* SIOCGIWTHRSPY */ +#ifdef WAVELAN_ROAMING_EXT + wavelan_set_wap, /* SIOCSIWAP */ + wavelan_get_wap, /* SIOCGIWAP */ + NULL, /* -- hole -- */ + NULL, /* SIOCGIWAPLIST */ + NULL, /* -- hole -- */ + NULL, /* -- hole -- */ + wavelan_set_essid, /* SIOCSIWESSID */ + wavelan_get_essid, /* SIOCGIWESSID */ +#else /* WAVELAN_ROAMING_EXT */ + NULL, /* SIOCSIWAP */ + NULL, /* SIOCGIWAP */ + NULL, /* -- hole -- */ + NULL, /* SIOCGIWAPLIST */ + NULL, /* -- hole -- */ + NULL, /* -- hole -- */ + NULL, /* SIOCSIWESSID */ + NULL, /* SIOCGIWESSID */ +#endif /* WAVELAN_ROAMING_EXT */ + NULL, /* SIOCSIWNICKN */ + NULL, /* SIOCGIWNICKN */ + NULL, /* -- hole -- */ + NULL, /* -- hole -- */ + NULL, /* SIOCSIWRATE */ + NULL, /* SIOCGIWRATE */ + NULL, /* SIOCSIWRTS */ + NULL, /* SIOCGIWRTS */ + NULL, /* SIOCSIWFRAG */ + NULL, /* SIOCGIWFRAG */ + NULL, /* SIOCSIWTXPOW */ + NULL, /* SIOCGIWTXPOW */ + NULL, /* SIOCSIWRETRY */ + NULL, /* SIOCGIWRETRY */ + wavelan_set_encode, /* SIOCSIWENCODE */ + wavelan_get_encode, /* SIOCGIWENCODE */ +}; + +static const iw_handler wavelan_private_handler[] = +{ + wavelan_set_qthr, /* SIOCIWFIRSTPRIV */ + wavelan_get_qthr, /* SIOCIWFIRSTPRIV + 1 */ +#ifdef WAVELAN_ROAMING + wavelan_set_roam, /* SIOCIWFIRSTPRIV + 2 */ + wavelan_get_roam, /* SIOCIWFIRSTPRIV + 3 */ +#else /* WAVELAN_ROAMING */ + NULL, /* SIOCIWFIRSTPRIV + 2 */ + NULL, /* SIOCIWFIRSTPRIV + 3 */ +#endif /* WAVELAN_ROAMING */ +#ifdef HISTOGRAM + wavelan_set_histo, /* SIOCIWFIRSTPRIV + 4 */ + wavelan_get_histo, /* SIOCIWFIRSTPRIV + 5 */ +#endif /* HISTOGRAM */ +}; + +static const struct iw_handler_def wavelan_handler_def = +{ + .num_standard = ARRAY_SIZE(wavelan_handler), + .num_private = ARRAY_SIZE(wavelan_private_handler), + .num_private_args = ARRAY_SIZE(wavelan_private_args), + .standard = wavelan_handler, + .private = wavelan_private_handler, + .private_args = wavelan_private_args, + .get_wireless_stats = wavelan_get_wireless_stats, +}; + +/*------------------------------------------------------------------*/ +/* + * Get wireless statistics + * Called by /proc/net/wireless... + */ +static iw_stats * +wavelan_get_wireless_stats(struct net_device * dev) +{ + unsigned int base = dev->base_addr; + net_local * lp = netdev_priv(dev); + mmr_t m; + iw_stats * wstats; + unsigned long flags; + +#ifdef DEBUG_IOCTL_TRACE + printk(KERN_DEBUG "%s: ->wavelan_get_wireless_stats()\n", dev->name); +#endif + + /* Disable interrupts & save flags */ + spin_lock_irqsave(&lp->spinlock, flags); + + wstats = &lp->wstats; + + /* Get data from the mmc */ + mmc_out(base, mmwoff(0, mmw_freeze), 1); + + mmc_read(base, mmroff(0, mmr_dce_status), &m.mmr_dce_status, 1); + mmc_read(base, mmroff(0, mmr_wrong_nwid_l), &m.mmr_wrong_nwid_l, 2); + mmc_read(base, mmroff(0, mmr_thr_pre_set), &m.mmr_thr_pre_set, 4); + + mmc_out(base, mmwoff(0, mmw_freeze), 0); + + /* Copy data to wireless stuff */ + wstats->status = m.mmr_dce_status & MMR_DCE_STATUS; + wstats->qual.qual = m.mmr_sgnl_qual & MMR_SGNL_QUAL; + wstats->qual.level = m.mmr_signal_lvl & MMR_SIGNAL_LVL; + wstats->qual.noise = m.mmr_silence_lvl & MMR_SILENCE_LVL; + wstats->qual.updated = (((m.mmr_signal_lvl & MMR_SIGNAL_LVL_VALID) >> 7) | + ((m.mmr_signal_lvl & MMR_SIGNAL_LVL_VALID) >> 6) | + ((m.mmr_silence_lvl & MMR_SILENCE_LVL_VALID) >> 5)); + wstats->discard.nwid += (m.mmr_wrong_nwid_h << 8) | m.mmr_wrong_nwid_l; + wstats->discard.code = 0L; + wstats->discard.misc = 0L; + + /* ReEnable interrupts & restore flags */ + spin_unlock_irqrestore(&lp->spinlock, flags); + +#ifdef DEBUG_IOCTL_TRACE + printk(KERN_DEBUG "%s: <-wavelan_get_wireless_stats()\n", dev->name); +#endif + return &lp->wstats; +} + +/************************* PACKET RECEPTION *************************/ +/* + * This part deal with receiving the packets. + * The interrupt handler get an interrupt when a packet has been + * successfully received and called this part... + */ + +/*------------------------------------------------------------------*/ +/* + * Calculate the starting address of the frame pointed to by the receive + * frame pointer and verify that the frame seem correct + * (called by wv_packet_rcv()) + */ +static int +wv_start_of_frame(struct net_device * dev, + int rfp, /* end of frame */ + int wrap) /* start of buffer */ +{ + unsigned int base = dev->base_addr; + int rp; + int len; + + rp = (rfp - 5 + RX_SIZE) % RX_SIZE; + outb(rp & 0xff, PIORL(base)); + outb(((rp >> 8) & PIORH_MASK), PIORH(base)); + len = inb(PIOP(base)); + len |= inb(PIOP(base)) << 8; + + /* Sanity checks on size */ + /* Frame too big */ + if(len > MAXDATAZ + 100) + { +#ifdef DEBUG_RX_ERROR + printk(KERN_INFO "%s: wv_start_of_frame: Received frame too large, rfp %d len 0x%x\n", + dev->name, rfp, len); +#endif + return(-1); + } + + /* Frame too short */ + if(len < 7) + { +#ifdef DEBUG_RX_ERROR + printk(KERN_INFO "%s: wv_start_of_frame: Received null frame, rfp %d len 0x%x\n", + dev->name, rfp, len); +#endif + return(-1); + } + + /* Wrap around buffer */ + if(len > ((wrap - (rfp - len) + RX_SIZE) % RX_SIZE)) /* magic formula ! */ + { +#ifdef DEBUG_RX_ERROR + printk(KERN_INFO "%s: wv_start_of_frame: wrap around buffer, wrap %d rfp %d len 0x%x\n", + dev->name, wrap, rfp, len); +#endif + return(-1); + } + + return((rp - len + RX_SIZE) % RX_SIZE); +} /* wv_start_of_frame */ + +/*------------------------------------------------------------------*/ +/* + * This routine does the actual copy of data (including the ethernet + * header structure) from the WaveLAN card to an sk_buff chain that + * will be passed up to the network interface layer. NOTE: We + * currently don't handle trailer protocols (neither does the rest of + * the network interface), so if that is needed, it will (at least in + * part) be added here. The contents of the receive ring buffer are + * copied to a message chain that is then passed to the kernel. + * + * Note: if any errors occur, the packet is "dropped on the floor" + * (called by wv_packet_rcv()) + */ +static void +wv_packet_read(struct net_device * dev, + int fd_p, + int sksize) +{ + net_local * lp = netdev_priv(dev); + struct sk_buff * skb; + +#ifdef DEBUG_RX_TRACE + printk(KERN_DEBUG "%s: ->wv_packet_read(0x%X, %d)\n", + dev->name, fd_p, sksize); +#endif + + /* Allocate some buffer for the new packet */ + if((skb = dev_alloc_skb(sksize+2)) == (struct sk_buff *) NULL) + { +#ifdef DEBUG_RX_ERROR + printk(KERN_INFO "%s: wv_packet_read(): could not alloc_skb(%d, GFP_ATOMIC)\n", + dev->name, sksize); +#endif + dev->stats.rx_dropped++; + /* + * Not only do we want to return here, but we also need to drop the + * packet on the floor to clear the interrupt. + */ + return; + } + + skb_reserve(skb, 2); + fd_p = read_ringbuf(dev, fd_p, (char *) skb_put(skb, sksize), sksize); + skb->protocol = eth_type_trans(skb, dev); + +#ifdef DEBUG_RX_INFO + wv_packet_info(skb_mac_header(skb), sksize, dev->name, "wv_packet_read"); +#endif /* DEBUG_RX_INFO */ + + /* Statistics gathering & stuff associated. + * It seem a bit messy with all the define, but it's really simple... */ + if( +#ifdef IW_WIRELESS_SPY + (lp->spy_data.spy_number > 0) || +#endif /* IW_WIRELESS_SPY */ +#ifdef HISTOGRAM + (lp->his_number > 0) || +#endif /* HISTOGRAM */ +#ifdef WAVELAN_ROAMING + (do_roaming) || +#endif /* WAVELAN_ROAMING */ + 0) + { + u_char stats[3]; /* Signal level, Noise level, Signal quality */ + + /* read signal level, silence level and signal quality bytes */ + fd_p = read_ringbuf(dev, (fd_p + 4) % RX_SIZE + RX_BASE, + stats, 3); +#ifdef DEBUG_RX_INFO + printk(KERN_DEBUG "%s: wv_packet_read(): Signal level %d/63, Silence level %d/63, signal quality %d/16\n", + dev->name, stats[0] & 0x3F, stats[1] & 0x3F, stats[2] & 0x0F); +#endif + +#ifdef WAVELAN_ROAMING + if(do_roaming) + if(WAVELAN_BEACON(skb->data)) + wl_roam_gather(dev, skb->data, stats); +#endif /* WAVELAN_ROAMING */ + +#ifdef WIRELESS_SPY + wl_spy_gather(dev, skb_mac_header(skb) + WAVELAN_ADDR_SIZE, stats); +#endif /* WIRELESS_SPY */ +#ifdef HISTOGRAM + wl_his_gather(dev, stats); +#endif /* HISTOGRAM */ + } + + /* + * Hand the packet to the Network Module + */ + netif_rx(skb); + + /* Keep stats up to date */ + dev->stats.rx_packets++; + dev->stats.rx_bytes += sksize; + +#ifdef DEBUG_RX_TRACE + printk(KERN_DEBUG "%s: <-wv_packet_read()\n", dev->name); +#endif + return; +} + +/*------------------------------------------------------------------*/ +/* + * This routine is called by the interrupt handler to initiate a + * packet transfer from the card to the network interface layer above + * this driver. This routine checks if a buffer has been successfully + * received by the WaveLAN card. If so, the routine wv_packet_read is + * called to do the actual transfer of the card's data including the + * ethernet header into a packet consisting of an sk_buff chain. + * (called by wavelan_interrupt()) + * Note : the spinlock is already grabbed for us and irq are disabled. + */ +static void +wv_packet_rcv(struct net_device * dev) +{ + unsigned int base = dev->base_addr; + net_local * lp = netdev_priv(dev); + int newrfp; + int rp; + int len; + int f_start; + int status; + int i593_rfp; + int stat_ptr; + u_char c[4]; + +#ifdef DEBUG_RX_TRACE + printk(KERN_DEBUG "%s: ->wv_packet_rcv()\n", dev->name); +#endif + + /* Get the new receive frame pointer from the i82593 chip */ + outb(CR0_STATUS_2 | OP0_NOP, LCCR(base)); + i593_rfp = inb(LCSR(base)); + i593_rfp |= inb(LCSR(base)) << 8; + i593_rfp %= RX_SIZE; + + /* Get the new receive frame pointer from the WaveLAN card. + * It is 3 bytes more than the increment of the i82593 receive + * frame pointer, for each packet. This is because it includes the + * 3 roaming bytes added by the mmc. + */ + newrfp = inb(RPLL(base)); + newrfp |= inb(RPLH(base)) << 8; + newrfp %= RX_SIZE; + +#ifdef DEBUG_RX_INFO + printk(KERN_DEBUG "%s: wv_packet_rcv(): i593_rfp %d stop %d newrfp %d lp->rfp %d\n", + dev->name, i593_rfp, lp->stop, newrfp, lp->rfp); +#endif + +#ifdef DEBUG_RX_ERROR + /* If no new frame pointer... */ + if(lp->overrunning || newrfp == lp->rfp) + printk(KERN_INFO "%s: wv_packet_rcv(): no new frame: i593_rfp %d stop %d newrfp %d lp->rfp %d\n", + dev->name, i593_rfp, lp->stop, newrfp, lp->rfp); +#endif + + /* Read all frames (packets) received */ + while(newrfp != lp->rfp) + { + /* A frame is composed of the packet, followed by a status word, + * the length of the frame (word) and the mmc info (SNR & qual). + * It's because the length is at the end that we can only scan + * frames backward. */ + + /* Find the first frame by skipping backwards over the frames */ + rp = newrfp; /* End of last frame */ + while(((f_start = wv_start_of_frame(dev, rp, newrfp)) != lp->rfp) && + (f_start != -1)) + rp = f_start; + + /* If we had a problem */ + if(f_start == -1) + { +#ifdef DEBUG_RX_ERROR + printk(KERN_INFO "wavelan_cs: cannot find start of frame "); + printk(" i593_rfp %d stop %d newrfp %d lp->rfp %d\n", + i593_rfp, lp->stop, newrfp, lp->rfp); +#endif + lp->rfp = rp; /* Get to the last usable frame */ + continue; + } + + /* f_start point to the beggining of the first frame received + * and rp to the beggining of the next one */ + + /* Read status & length of the frame */ + stat_ptr = (rp - 7 + RX_SIZE) % RX_SIZE; + stat_ptr = read_ringbuf(dev, stat_ptr, c, 4); + status = c[0] | (c[1] << 8); + len = c[2] | (c[3] << 8); + + /* Check status */ + if((status & RX_RCV_OK) != RX_RCV_OK) + { + dev->stats.rx_errors++; + if(status & RX_NO_SFD) + dev->stats.rx_frame_errors++; + if(status & RX_CRC_ERR) + dev->stats.rx_crc_errors++; + if(status & RX_OVRRUN) + dev->stats.rx_over_errors++; + +#ifdef DEBUG_RX_FAIL + printk(KERN_DEBUG "%s: wv_packet_rcv(): packet not received ok, status = 0x%x\n", + dev->name, status); +#endif + } + else + /* Read the packet and transmit to Linux */ + wv_packet_read(dev, f_start, len - 2); + + /* One frame has been processed, skip it */ + lp->rfp = rp; + } + + /* + * Update the frame stop register, but set it to less than + * the full 8K to allow space for 3 bytes of signal strength + * per packet. + */ + lp->stop = (i593_rfp + RX_SIZE - ((RX_SIZE / 64) * 3)) % RX_SIZE; + outb(OP0_SWIT_TO_PORT_1 | CR0_CHNL, LCCR(base)); + outb(CR1_STOP_REG_UPDATE | (lp->stop >> RX_SIZE_SHIFT), LCCR(base)); + outb(OP1_SWIT_TO_PORT_0, LCCR(base)); + +#ifdef DEBUG_RX_TRACE + printk(KERN_DEBUG "%s: <-wv_packet_rcv()\n", dev->name); +#endif +} + +/*********************** PACKET TRANSMISSION ***********************/ +/* + * This part deal with sending packet through the wavelan + * We copy the packet to the send buffer and then issue the send + * command to the i82593. The result of this operation will be + * checked in wavelan_interrupt() + */ + +/*------------------------------------------------------------------*/ +/* + * This routine fills in the appropriate registers and memory + * locations on the WaveLAN card and starts the card off on + * the transmit. + * (called in wavelan_packet_xmit()) + */ +static void +wv_packet_write(struct net_device * dev, + void * buf, + short length) +{ + net_local * lp = netdev_priv(dev); + unsigned int base = dev->base_addr; + unsigned long flags; + int clen = length; + register u_short xmtdata_base = TX_BASE; + +#ifdef DEBUG_TX_TRACE + printk(KERN_DEBUG "%s: ->wv_packet_write(%d)\n", dev->name, length); +#endif + + spin_lock_irqsave(&lp->spinlock, flags); + + /* Write the length of data buffer followed by the buffer */ + outb(xmtdata_base & 0xff, PIORL(base)); + outb(((xmtdata_base >> 8) & PIORH_MASK) | PIORH_SEL_TX, PIORH(base)); + outb(clen & 0xff, PIOP(base)); /* lsb */ + outb(clen >> 8, PIOP(base)); /* msb */ + + /* Send the data */ + outsb(PIOP(base), buf, clen); + + /* Indicate end of transmit chain */ + outb(OP0_NOP, PIOP(base)); + /* josullvn@cs.cmu.edu: need to send a second NOP for alignment... */ + outb(OP0_NOP, PIOP(base)); + + /* Reset the transmit DMA pointer */ + hacr_write_slow(base, HACR_PWR_STAT | HACR_TX_DMA_RESET); + hacr_write(base, HACR_DEFAULT); + /* Send the transmit command */ + wv_82593_cmd(dev, "wv_packet_write(): transmit", + OP0_TRANSMIT, SR0_NO_RESULT); + + /* Make sure the watchdog will keep quiet for a while */ + dev->trans_start = jiffies; + + /* Keep stats up to date */ + dev->stats.tx_bytes += length; + + spin_unlock_irqrestore(&lp->spinlock, flags); + +#ifdef DEBUG_TX_INFO + wv_packet_info((u_char *) buf, length, dev->name, "wv_packet_write"); +#endif /* DEBUG_TX_INFO */ + +#ifdef DEBUG_TX_TRACE + printk(KERN_DEBUG "%s: <-wv_packet_write()\n", dev->name); +#endif +} + +/*------------------------------------------------------------------*/ +/* + * This routine is called when we want to send a packet (NET3 callback) + * In this routine, we check if the harware is ready to accept + * the packet. We also prevent reentrance. Then, we call the function + * to send the packet... + */ +static netdev_tx_t +wavelan_packet_xmit(struct sk_buff * skb, + struct net_device * dev) +{ + net_local * lp = netdev_priv(dev); + unsigned long flags; + +#ifdef DEBUG_TX_TRACE + printk(KERN_DEBUG "%s: ->wavelan_packet_xmit(0x%X)\n", dev->name, + (unsigned) skb); +#endif + + /* + * Block a timer-based transmit from overlapping a previous transmit. + * In other words, prevent reentering this routine. + */ + netif_stop_queue(dev); + + /* If somebody has asked to reconfigure the controller, + * we can do it now */ + if(lp->reconfig_82593) + { + spin_lock_irqsave(&lp->spinlock, flags); /* Disable interrupts */ + wv_82593_config(dev); + spin_unlock_irqrestore(&lp->spinlock, flags); /* Re-enable interrupts */ + /* Note : the configure procedure was totally synchronous, + * so the Tx buffer is now free */ + } + + /* Check if we need some padding */ + /* Note : on wireless the propagation time is in the order of 1us, + * and we don't have the Ethernet specific requirement of beeing + * able to detect collisions, therefore in theory we don't really + * need to pad. Jean II */ + if (skb_padto(skb, ETH_ZLEN)) + return NETDEV_TX_OK; + + wv_packet_write(dev, skb->data, skb->len); + + dev_kfree_skb(skb); + +#ifdef DEBUG_TX_TRACE + printk(KERN_DEBUG "%s: <-wavelan_packet_xmit()\n", dev->name); +#endif + return NETDEV_TX_OK; +} + +/********************** HARDWARE CONFIGURATION **********************/ +/* + * This part do the real job of starting and configuring the hardware. + */ + +/*------------------------------------------------------------------*/ +/* + * Routine to initialize the Modem Management Controller. + * (called by wv_hw_config()) + */ +static int +wv_mmc_init(struct net_device * dev) +{ + unsigned int base = dev->base_addr; + psa_t psa; + mmw_t m; + int configured; + int i; /* Loop counter */ + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: ->wv_mmc_init()\n", dev->name); +#endif + + /* Read the parameter storage area */ + psa_read(dev, 0, (unsigned char *) &psa, sizeof(psa)); + + /* + * Check the first three octets of the MAC addr for the manufacturer's code. + * Note: If you get the error message below, you've got a + * non-NCR/AT&T/Lucent PCMCIA cards, see wavelan_cs.h for detail on + * how to configure your card... + */ + for (i = 0; i < ARRAY_SIZE(MAC_ADDRESSES); i++) + if ((psa.psa_univ_mac_addr[0] == MAC_ADDRESSES[i][0]) && + (psa.psa_univ_mac_addr[1] == MAC_ADDRESSES[i][1]) && + (psa.psa_univ_mac_addr[2] == MAC_ADDRESSES[i][2])) + break; + + /* If we have not found it... */ + if (i == ARRAY_SIZE(MAC_ADDRESSES)) + { +#ifdef DEBUG_CONFIG_ERRORS + printk(KERN_WARNING "%s: wv_mmc_init(): Invalid MAC address: %02X:%02X:%02X:...\n", + dev->name, psa.psa_univ_mac_addr[0], + psa.psa_univ_mac_addr[1], psa.psa_univ_mac_addr[2]); +#endif + return FALSE; + } + + /* Get the MAC address */ + memcpy(&dev->dev_addr[0], &psa.psa_univ_mac_addr[0], WAVELAN_ADDR_SIZE); + +#ifdef USE_PSA_CONFIG + configured = psa.psa_conf_status & 1; +#else + configured = 0; +#endif + + /* Is the PSA is not configured */ + if(!configured) + { + /* User will be able to configure NWID after (with iwconfig) */ + psa.psa_nwid[0] = 0; + psa.psa_nwid[1] = 0; + + /* As NWID is not set : no NWID checking */ + psa.psa_nwid_select = 0; + + /* Disable encryption */ + psa.psa_encryption_select = 0; + + /* Set to standard values + * 0x04 for AT, + * 0x01 for MCA, + * 0x04 for PCMCIA and 2.00 card (AT&T 407-024689/E document) + */ + if (psa.psa_comp_number & 1) + psa.psa_thr_pre_set = 0x01; + else + psa.psa_thr_pre_set = 0x04; + psa.psa_quality_thr = 0x03; + + /* It is configured */ + psa.psa_conf_status |= 1; + +#ifdef USE_PSA_CONFIG + /* Write the psa */ + psa_write(dev, (char *)psa.psa_nwid - (char *)&psa, + (unsigned char *)psa.psa_nwid, 4); + psa_write(dev, (char *)&psa.psa_thr_pre_set - (char *)&psa, + (unsigned char *)&psa.psa_thr_pre_set, 1); + psa_write(dev, (char *)&psa.psa_quality_thr - (char *)&psa, + (unsigned char *)&psa.psa_quality_thr, 1); + psa_write(dev, (char *)&psa.psa_conf_status - (char *)&psa, + (unsigned char *)&psa.psa_conf_status, 1); + /* update the Wavelan checksum */ + update_psa_checksum(dev); +#endif /* USE_PSA_CONFIG */ + } + + /* Zero the mmc structure */ + memset(&m, 0x00, sizeof(m)); + + /* Copy PSA info to the mmc */ + m.mmw_netw_id_l = psa.psa_nwid[1]; + m.mmw_netw_id_h = psa.psa_nwid[0]; + + if(psa.psa_nwid_select & 1) + m.mmw_loopt_sel = 0x00; + else + m.mmw_loopt_sel = MMW_LOOPT_SEL_DIS_NWID; + + memcpy(&m.mmw_encr_key, &psa.psa_encryption_key, + sizeof(m.mmw_encr_key)); + + if(psa.psa_encryption_select) + m.mmw_encr_enable = MMW_ENCR_ENABLE_EN | MMW_ENCR_ENABLE_MODE; + else + m.mmw_encr_enable = 0; + + m.mmw_thr_pre_set = psa.psa_thr_pre_set & 0x3F; + m.mmw_quality_thr = psa.psa_quality_thr & 0x0F; + + /* + * Set default modem control parameters. + * See NCR document 407-0024326 Rev. A. + */ + m.mmw_jabber_enable = 0x01; + m.mmw_anten_sel = MMW_ANTEN_SEL_ALG_EN; + m.mmw_ifs = 0x20; + m.mmw_mod_delay = 0x04; + m.mmw_jam_time = 0x38; + + m.mmw_des_io_invert = 0; + m.mmw_freeze = 0; + m.mmw_decay_prm = 0; + m.mmw_decay_updat_prm = 0; + + /* Write all info to mmc */ + mmc_write(base, 0, (u_char *)&m, sizeof(m)); + + /* The following code start the modem of the 2.00 frequency + * selectable cards at power on. It's not strictly needed for the + * following boots... + * The original patch was by Joe Finney for the PCMCIA driver, but + * I've cleaned it a bit and add documentation. + * Thanks to Loeke Brederveld from Lucent for the info. + */ + + /* Attempt to recognise 2.00 cards (2.4 GHz frequency selectable) + * (does it work for everybody ? - especially old cards...) */ + /* Note : WFREQSEL verify that it is able to read from EEprom + * a sensible frequency (address 0x00) + that MMR_FEE_STATUS_ID + * is 0xA (Xilinx version) or 0xB (Ariadne version). + * My test is more crude but do work... */ + if(!(mmc_in(base, mmroff(0, mmr_fee_status)) & + (MMR_FEE_STATUS_DWLD | MMR_FEE_STATUS_BUSY))) + { + /* We must download the frequency parameters to the + * synthetisers (from the EEprom - area 1) + * Note : as the EEprom is auto decremented, we set the end + * if the area... */ + m.mmw_fee_addr = 0x0F; + m.mmw_fee_ctrl = MMW_FEE_CTRL_READ | MMW_FEE_CTRL_DWLD; + mmc_write(base, (char *)&m.mmw_fee_ctrl - (char *)&m, + (unsigned char *)&m.mmw_fee_ctrl, 2); + + /* Wait until the download is finished */ + fee_wait(base, 100, 100); + +#ifdef DEBUG_CONFIG_INFO + /* The frequency was in the last word downloaded... */ + mmc_read(base, (char *)&m.mmw_fee_data_l - (char *)&m, + (unsigned char *)&m.mmw_fee_data_l, 2); + + /* Print some info for the user */ + printk(KERN_DEBUG "%s: Wavelan 2.00 recognised (frequency select) : Current frequency = %ld\n", + dev->name, + ((m.mmw_fee_data_h << 4) | + (m.mmw_fee_data_l >> 4)) * 5 / 2 + 24000L); +#endif + + /* We must now download the power adjust value (gain) to + * the synthetisers (from the EEprom - area 7 - DAC) */ + m.mmw_fee_addr = 0x61; + m.mmw_fee_ctrl = MMW_FEE_CTRL_READ | MMW_FEE_CTRL_DWLD; + mmc_write(base, (char *)&m.mmw_fee_ctrl - (char *)&m, + (unsigned char *)&m.mmw_fee_ctrl, 2); + + /* Wait until the download is finished */ + } /* if 2.00 card */ + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: <-wv_mmc_init()\n", dev->name); +#endif + return TRUE; +} + +/*------------------------------------------------------------------*/ +/* + * Routine to gracefully turn off reception, and wait for any commands + * to complete. + * (called in wv_ru_start() and wavelan_close() and wavelan_event()) + */ +static int +wv_ru_stop(struct net_device * dev) +{ + unsigned int base = dev->base_addr; + net_local * lp = netdev_priv(dev); + unsigned long flags; + int status; + int spin; + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: ->wv_ru_stop()\n", dev->name); +#endif + + spin_lock_irqsave(&lp->spinlock, flags); + + /* First, send the LAN controller a stop receive command */ + wv_82593_cmd(dev, "wv_graceful_shutdown(): stop-rcv", + OP0_STOP_RCV, SR0_NO_RESULT); + + /* Then, spin until the receive unit goes idle */ + spin = 300; + do + { + udelay(10); + outb(OP0_NOP | CR0_STATUS_3, LCCR(base)); + status = inb(LCSR(base)); + } + while(((status & SR3_RCV_STATE_MASK) != SR3_RCV_IDLE) && (spin-- > 0)); + + /* Now, spin until the chip finishes executing its current command */ + do + { + udelay(10); + outb(OP0_NOP | CR0_STATUS_3, LCCR(base)); + status = inb(LCSR(base)); + } + while(((status & SR3_EXEC_STATE_MASK) != SR3_EXEC_IDLE) && (spin-- > 0)); + + spin_unlock_irqrestore(&lp->spinlock, flags); + + /* If there was a problem */ + if(spin <= 0) + { +#ifdef DEBUG_CONFIG_ERRORS + printk(KERN_INFO "%s: wv_ru_stop(): The chip doesn't want to stop...\n", + dev->name); +#endif + return FALSE; + } + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: <-wv_ru_stop()\n", dev->name); +#endif + return TRUE; +} /* wv_ru_stop */ + +/*------------------------------------------------------------------*/ +/* + * This routine starts the receive unit running. First, it checks if + * the card is actually ready. Then the card is instructed to receive + * packets again. + * (called in wv_hw_reset() & wavelan_open()) + */ +static int +wv_ru_start(struct net_device * dev) +{ + unsigned int base = dev->base_addr; + net_local * lp = netdev_priv(dev); + unsigned long flags; + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: ->wv_ru_start()\n", dev->name); +#endif + + /* + * We need to start from a quiescent state. To do so, we could check + * if the card is already running, but instead we just try to shut + * it down. First, we disable reception (in case it was already enabled). + */ + if(!wv_ru_stop(dev)) + return FALSE; + + spin_lock_irqsave(&lp->spinlock, flags); + + /* Now we know that no command is being executed. */ + + /* Set the receive frame pointer and stop pointer */ + lp->rfp = 0; + outb(OP0_SWIT_TO_PORT_1 | CR0_CHNL, LCCR(base)); + + /* Reset ring management. This sets the receive frame pointer to 1 */ + outb(OP1_RESET_RING_MNGMT, LCCR(base)); + +#if 0 + /* XXX the i82593 manual page 6-4 seems to indicate that the stop register + should be set as below */ + /* outb(CR1_STOP_REG_UPDATE|((RX_SIZE - 0x40)>> RX_SIZE_SHIFT),LCCR(base));*/ +#elif 0 + /* but I set it 0 instead */ + lp->stop = 0; +#else + /* but I set it to 3 bytes per packet less than 8K */ + lp->stop = (0 + RX_SIZE - ((RX_SIZE / 64) * 3)) % RX_SIZE; +#endif + outb(CR1_STOP_REG_UPDATE | (lp->stop >> RX_SIZE_SHIFT), LCCR(base)); + outb(OP1_INT_ENABLE, LCCR(base)); + outb(OP1_SWIT_TO_PORT_0, LCCR(base)); + + /* Reset receive DMA pointer */ + hacr_write_slow(base, HACR_PWR_STAT | HACR_TX_DMA_RESET); + hacr_write_slow(base, HACR_DEFAULT); + + /* Receive DMA on channel 1 */ + wv_82593_cmd(dev, "wv_ru_start(): rcv-enable", + CR0_CHNL | OP0_RCV_ENABLE, SR0_NO_RESULT); + +#ifdef DEBUG_I82593_SHOW + { + int status; + int opri; + int spin = 10000; + + /* spin until the chip starts receiving */ + do + { + outb(OP0_NOP | CR0_STATUS_3, LCCR(base)); + status = inb(LCSR(base)); + if(spin-- <= 0) + break; + } + while(((status & SR3_RCV_STATE_MASK) != SR3_RCV_ACTIVE) && + ((status & SR3_RCV_STATE_MASK) != SR3_RCV_READY)); + printk(KERN_DEBUG "rcv status is 0x%x [i:%d]\n", + (status & SR3_RCV_STATE_MASK), i); + } +#endif + + spin_unlock_irqrestore(&lp->spinlock, flags); + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: <-wv_ru_start()\n", dev->name); +#endif + return TRUE; +} + +/*------------------------------------------------------------------*/ +/* + * This routine does a standard config of the WaveLAN controller (i82593). + * In the ISA driver, this is integrated in wavelan_hardware_reset() + * (called by wv_hw_config(), wv_82593_reconfig() & wavelan_packet_xmit()) + */ +static int +wv_82593_config(struct net_device * dev) +{ + unsigned int base = dev->base_addr; + net_local * lp = netdev_priv(dev); + struct i82593_conf_block cfblk; + int ret = TRUE; + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: ->wv_82593_config()\n", dev->name); +#endif + + /* Create & fill i82593 config block + * + * Now conform to Wavelan document WCIN085B + */ + memset(&cfblk, 0x00, sizeof(struct i82593_conf_block)); + cfblk.d6mod = FALSE; /* Run in i82593 advanced mode */ + cfblk.fifo_limit = 5; /* = 56 B rx and 40 B tx fifo thresholds */ + cfblk.forgnesi = FALSE; /* 0=82C501, 1=AMD7992B compatibility */ + cfblk.fifo_32 = 1; + cfblk.throttle_enb = FALSE; + cfblk.contin = TRUE; /* enable continuous mode */ + cfblk.cntrxint = FALSE; /* enable continuous mode receive interrupts */ + cfblk.addr_len = WAVELAN_ADDR_SIZE; + cfblk.acloc = TRUE; /* Disable source addr insertion by i82593 */ + cfblk.preamb_len = 0; /* 2 bytes preamble (SFD) */ + cfblk.loopback = FALSE; + cfblk.lin_prio = 0; /* conform to 802.3 backoff algorithm */ + cfblk.exp_prio = 5; /* conform to 802.3 backoff algorithm */ + cfblk.bof_met = 1; /* conform to 802.3 backoff algorithm */ + cfblk.ifrm_spc = 0x20 >> 4; /* 32 bit times interframe spacing */ + cfblk.slottim_low = 0x20 >> 5; /* 32 bit times slot time */ + cfblk.slottim_hi = 0x0; + cfblk.max_retr = 15; + cfblk.prmisc = ((lp->promiscuous) ? TRUE: FALSE); /* Promiscuous mode */ + cfblk.bc_dis = FALSE; /* Enable broadcast reception */ + cfblk.crs_1 = TRUE; /* Transmit without carrier sense */ + cfblk.nocrc_ins = FALSE; /* i82593 generates CRC */ + cfblk.crc_1632 = FALSE; /* 32-bit Autodin-II CRC */ + cfblk.crs_cdt = FALSE; /* CD not to be interpreted as CS */ + cfblk.cs_filter = 0; /* CS is recognized immediately */ + cfblk.crs_src = FALSE; /* External carrier sense */ + cfblk.cd_filter = 0; /* CD is recognized immediately */ + cfblk.min_fr_len = ETH_ZLEN >> 2; /* Minimum frame length 64 bytes */ + cfblk.lng_typ = FALSE; /* Length field > 1500 = type field */ + cfblk.lng_fld = TRUE; /* Disable 802.3 length field check */ + cfblk.rxcrc_xf = TRUE; /* Don't transfer CRC to memory */ + cfblk.artx = TRUE; /* Disable automatic retransmission */ + cfblk.sarec = TRUE; /* Disable source addr trig of CD */ + cfblk.tx_jabber = TRUE; /* Disable jabber jam sequence */ + cfblk.hash_1 = FALSE; /* Use bits 0-5 in mc address hash */ + cfblk.lbpkpol = TRUE; /* Loopback pin active high */ + cfblk.fdx = FALSE; /* Disable full duplex operation */ + cfblk.dummy_6 = 0x3f; /* all ones */ + cfblk.mult_ia = FALSE; /* No multiple individual addresses */ + cfblk.dis_bof = FALSE; /* Disable the backoff algorithm ?! */ + cfblk.dummy_1 = TRUE; /* set to 1 */ + cfblk.tx_ifs_retrig = 3; /* Hmm... Disabled */ +#ifdef MULTICAST_ALL + cfblk.mc_all = (lp->allmulticast ? TRUE: FALSE); /* Allow all multicasts */ +#else + cfblk.mc_all = FALSE; /* No multicast all mode */ +#endif + cfblk.rcv_mon = 0; /* Monitor mode disabled */ + cfblk.frag_acpt = TRUE; /* Do not accept fragments */ + cfblk.tstrttrs = FALSE; /* No start transmission threshold */ + cfblk.fretx = TRUE; /* FIFO automatic retransmission */ + cfblk.syncrqs = FALSE; /* Synchronous DRQ deassertion... */ + cfblk.sttlen = TRUE; /* 6 byte status registers */ + cfblk.rx_eop = TRUE; /* Signal EOP on packet reception */ + cfblk.tx_eop = TRUE; /* Signal EOP on packet transmission */ + cfblk.rbuf_size = RX_SIZE>>11; /* Set receive buffer size */ + cfblk.rcvstop = TRUE; /* Enable Receive Stop Register */ + +#ifdef DEBUG_I82593_SHOW + print_hex_dump(KERN_DEBUG, "wavelan_cs: config block: ", DUMP_PREFIX_NONE, + 16, 1, &cfblk, sizeof(struct i82593_conf_block), false); +#endif + + /* Copy the config block to the i82593 */ + outb(TX_BASE & 0xff, PIORL(base)); + outb(((TX_BASE >> 8) & PIORH_MASK) | PIORH_SEL_TX, PIORH(base)); + outb(sizeof(struct i82593_conf_block) & 0xff, PIOP(base)); /* lsb */ + outb(sizeof(struct i82593_conf_block) >> 8, PIOP(base)); /* msb */ + outsb(PIOP(base), (char *) &cfblk, sizeof(struct i82593_conf_block)); + + /* reset transmit DMA pointer */ + hacr_write_slow(base, HACR_PWR_STAT | HACR_TX_DMA_RESET); + hacr_write(base, HACR_DEFAULT); + if(!wv_82593_cmd(dev, "wv_82593_config(): configure", + OP0_CONFIGURE, SR0_CONFIGURE_DONE)) + ret = FALSE; + + /* Initialize adapter's ethernet MAC address */ + outb(TX_BASE & 0xff, PIORL(base)); + outb(((TX_BASE >> 8) & PIORH_MASK) | PIORH_SEL_TX, PIORH(base)); + outb(WAVELAN_ADDR_SIZE, PIOP(base)); /* byte count lsb */ + outb(0, PIOP(base)); /* byte count msb */ + outsb(PIOP(base), &dev->dev_addr[0], WAVELAN_ADDR_SIZE); + + /* reset transmit DMA pointer */ + hacr_write_slow(base, HACR_PWR_STAT | HACR_TX_DMA_RESET); + hacr_write(base, HACR_DEFAULT); + if(!wv_82593_cmd(dev, "wv_82593_config(): ia-setup", + OP0_IA_SETUP, SR0_IA_SETUP_DONE)) + ret = FALSE; + +#ifdef WAVELAN_ROAMING + /* If roaming is enabled, join the "Beacon Request" multicast group... */ + /* But only if it's not in there already! */ + if(do_roaming) + dev_mc_add(dev,WAVELAN_BEACON_ADDRESS, WAVELAN_ADDR_SIZE, 1); +#endif /* WAVELAN_ROAMING */ + + /* If any multicast address to set */ + if(lp->mc_count) + { + struct dev_mc_list * dmi; + int addrs_len = WAVELAN_ADDR_SIZE * lp->mc_count; + +#ifdef DEBUG_CONFIG_INFO + printk(KERN_DEBUG "%s: wv_hw_config(): set %d multicast addresses:\n", + dev->name, lp->mc_count); + for(dmi=dev->mc_list; dmi; dmi=dmi->next) + printk(KERN_DEBUG " %pM\n", dmi->dmi_addr); +#endif + + /* Initialize adapter's ethernet multicast addresses */ + outb(TX_BASE & 0xff, PIORL(base)); + outb(((TX_BASE >> 8) & PIORH_MASK) | PIORH_SEL_TX, PIORH(base)); + outb(addrs_len & 0xff, PIOP(base)); /* byte count lsb */ + outb((addrs_len >> 8), PIOP(base)); /* byte count msb */ + for(dmi=dev->mc_list; dmi; dmi=dmi->next) + outsb(PIOP(base), dmi->dmi_addr, dmi->dmi_addrlen); + + /* reset transmit DMA pointer */ + hacr_write_slow(base, HACR_PWR_STAT | HACR_TX_DMA_RESET); + hacr_write(base, HACR_DEFAULT); + if(!wv_82593_cmd(dev, "wv_82593_config(): mc-setup", + OP0_MC_SETUP, SR0_MC_SETUP_DONE)) + ret = FALSE; + lp->mc_count = dev->mc_count; /* remember to avoid repeated reset */ + } + + /* Job done, clear the flag */ + lp->reconfig_82593 = FALSE; + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: <-wv_82593_config()\n", dev->name); +#endif + return(ret); +} + +/*------------------------------------------------------------------*/ +/* + * Read the Access Configuration Register, perform a software reset, + * and then re-enable the card's software. + * + * If I understand correctly : reset the pcmcia interface of the + * wavelan. + * (called by wv_config()) + */ +static int +wv_pcmcia_reset(struct net_device * dev) +{ + int i; + conf_reg_t reg = { 0, CS_READ, CISREG_COR, 0 }; + struct pcmcia_device * link = ((net_local *)netdev_priv(dev))->link; + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: ->wv_pcmcia_reset()\n", dev->name); +#endif + + i = pcmcia_access_configuration_register(link, ®); + if (i != 0) + return FALSE; + +#ifdef DEBUG_CONFIG_INFO + printk(KERN_DEBUG "%s: wavelan_pcmcia_reset(): Config reg is 0x%x\n", + dev->name, (u_int) reg.Value); +#endif + + reg.Action = CS_WRITE; + reg.Value = reg.Value | COR_SW_RESET; + i = pcmcia_access_configuration_register(link, ®); + if (i != 0) + return FALSE; + + reg.Action = CS_WRITE; + reg.Value = COR_LEVEL_IRQ | COR_CONFIG; + i = pcmcia_access_configuration_register(link, ®); + if (i != 0) + return FALSE; + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: <-wv_pcmcia_reset()\n", dev->name); +#endif + return TRUE; +} + +/*------------------------------------------------------------------*/ +/* + * wavelan_hw_config() is called after a CARD_INSERTION event is + * received, to configure the wavelan hardware. + * Note that the reception will be enabled in wavelan->open(), so the + * device is configured but idle... + * Performs the following actions: + * 1. A pcmcia software reset (using wv_pcmcia_reset()) + * 2. A power reset (reset DMA) + * 3. Reset the LAN controller + * 4. Initialize the radio modem (using wv_mmc_init) + * 5. Configure LAN controller (using wv_82593_config) + * 6. Perform a diagnostic on the LAN controller + * (called by wavelan_event() & wv_hw_reset()) + */ +static int +wv_hw_config(struct net_device * dev) +{ + net_local * lp = netdev_priv(dev); + unsigned int base = dev->base_addr; + unsigned long flags; + int ret = FALSE; + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: ->wv_hw_config()\n", dev->name); +#endif + + /* compile-time check the sizes of structures */ + BUILD_BUG_ON(sizeof(psa_t) != PSA_SIZE); + BUILD_BUG_ON(sizeof(mmw_t) != MMW_SIZE); + BUILD_BUG_ON(sizeof(mmr_t) != MMR_SIZE); + + /* Reset the pcmcia interface */ + if(wv_pcmcia_reset(dev) == FALSE) + return FALSE; + + /* Disable interrupts */ + spin_lock_irqsave(&lp->spinlock, flags); + + /* Disguised goto ;-) */ + do + { + /* Power UP the module + reset the modem + reset host adapter + * (in fact, reset DMA channels) */ + hacr_write_slow(base, HACR_RESET); + hacr_write(base, HACR_DEFAULT); + + /* Check if the module has been powered up... */ + if(hasr_read(base) & HASR_NO_CLK) + { +#ifdef DEBUG_CONFIG_ERRORS + printk(KERN_WARNING "%s: wv_hw_config(): modem not connected or not a wavelan card\n", + dev->name); +#endif + break; + } + + /* initialize the modem */ + if(wv_mmc_init(dev) == FALSE) + { +#ifdef DEBUG_CONFIG_ERRORS + printk(KERN_WARNING "%s: wv_hw_config(): Can't configure the modem\n", + dev->name); +#endif + break; + } + + /* reset the LAN controller (i82593) */ + outb(OP0_RESET, LCCR(base)); + mdelay(1); /* A bit crude ! */ + + /* Initialize the LAN controller */ + if(wv_82593_config(dev) == FALSE) + { +#ifdef DEBUG_CONFIG_ERRORS + printk(KERN_INFO "%s: wv_hw_config(): i82593 init failed\n", + dev->name); +#endif + break; + } + + /* Diagnostic */ + if(wv_diag(dev) == FALSE) + { +#ifdef DEBUG_CONFIG_ERRORS + printk(KERN_INFO "%s: wv_hw_config(): i82593 diagnostic failed\n", + dev->name); +#endif + break; + } + + /* + * insert code for loopback test here + */ + + /* The device is now configured */ + lp->configured = 1; + ret = TRUE; + } + while(0); + + /* Re-enable interrupts */ + spin_unlock_irqrestore(&lp->spinlock, flags); + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: <-wv_hw_config()\n", dev->name); +#endif + return(ret); +} + +/*------------------------------------------------------------------*/ +/* + * Totally reset the wavelan and restart it. + * Performs the following actions: + * 1. Call wv_hw_config() + * 2. Start the LAN controller's receive unit + * (called by wavelan_event(), wavelan_watchdog() and wavelan_open()) + */ +static void +wv_hw_reset(struct net_device * dev) +{ + net_local * lp = netdev_priv(dev); + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: ->wv_hw_reset()\n", dev->name); +#endif + + lp->nresets++; + lp->configured = 0; + + /* Call wv_hw_config() for most of the reset & init stuff */ + if(wv_hw_config(dev) == FALSE) + return; + + /* start receive unit */ + wv_ru_start(dev); + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: <-wv_hw_reset()\n", dev->name); +#endif +} + +/*------------------------------------------------------------------*/ +/* + * wv_pcmcia_config() is called after a CARD_INSERTION event is + * received, to configure the PCMCIA socket, and to make the ethernet + * device available to the system. + * (called by wavelan_event()) + */ +static int +wv_pcmcia_config(struct pcmcia_device * link) +{ + struct net_device * dev = (struct net_device *) link->priv; + int i; + win_req_t req; + memreq_t mem; + net_local * lp = netdev_priv(dev); + + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "->wv_pcmcia_config(0x%p)\n", link); +#endif + + do + { + i = pcmcia_request_io(link, &link->io); + if (i != 0) + break; + + /* + * Now allocate an interrupt line. Note that this does not + * actually assign a handler to the interrupt. + */ + i = pcmcia_request_irq(link, &link->irq); + if (i != 0) + break; + + /* + * This actually configures the PCMCIA socket -- setting up + * the I/O windows and the interrupt mapping. + */ + link->conf.ConfigIndex = 1; + i = pcmcia_request_configuration(link, &link->conf); + if (i != 0) + break; + + /* + * Allocate a small memory window. Note that the struct pcmcia_device + * structure provides space for one window handle -- if your + * device needs several windows, you'll need to keep track of + * the handles in your private data structure, link->priv. + */ + req.Attributes = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE; + req.Base = req.Size = 0; + req.AccessSpeed = mem_speed; + i = pcmcia_request_window(link, &req, &link->win); + if (i != 0) + break; + + lp->mem = ioremap(req.Base, req.Size); + dev->mem_start = (u_long)lp->mem; + dev->mem_end = dev->mem_start + req.Size; + + mem.CardOffset = 0; mem.Page = 0; + i = pcmcia_map_mem_page(link, link->win, &mem); + if (i != 0) + break; + + /* Feed device with this info... */ + dev->irq = link->irq.AssignedIRQ; + dev->base_addr = link->io.BasePort1; + netif_start_queue(dev); + +#ifdef DEBUG_CONFIG_INFO + printk(KERN_DEBUG "wv_pcmcia_config: MEMSTART %p IRQ %d IOPORT 0x%x\n", + lp->mem, dev->irq, (u_int) dev->base_addr); +#endif + + SET_NETDEV_DEV(dev, &link->dev); + i = register_netdev(dev); + if(i != 0) + { +#ifdef DEBUG_CONFIG_ERRORS + printk(KERN_INFO "wv_pcmcia_config(): register_netdev() failed\n"); +#endif + break; + } + } + while(0); /* Humm... Disguised goto !!! */ + + /* If any step failed, release any partially configured state */ + if(i != 0) + { + wv_pcmcia_release(link); + return FALSE; + } + + strcpy(((net_local *) netdev_priv(dev))->node.dev_name, dev->name); + link->dev_node = &((net_local *) netdev_priv(dev))->node; + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "<-wv_pcmcia_config()\n"); +#endif + return TRUE; +} + +/*------------------------------------------------------------------*/ +/* + * After a card is removed, wv_pcmcia_release() will unregister the net + * device, and release the PCMCIA configuration. If the device is + * still open, this will be postponed until it is closed. + */ +static void +wv_pcmcia_release(struct pcmcia_device *link) +{ + struct net_device * dev = (struct net_device *) link->priv; + net_local * lp = netdev_priv(dev); + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: -> wv_pcmcia_release(0x%p)\n", dev->name, link); +#endif + + iounmap(lp->mem); + pcmcia_disable_device(link); + +#ifdef DEBUG_CONFIG_TRACE + printk(KERN_DEBUG "%s: <- wv_pcmcia_release()\n", dev->name); +#endif +} + +/************************ INTERRUPT HANDLING ************************/ + +/* + * This function is the interrupt handler for the WaveLAN card. This + * routine will be called whenever: + * 1. A packet is received. + * 2. A packet has successfully been transferred and the unit is + * ready to transmit another packet. + * 3. A command has completed execution. + */ +static irqreturn_t +wavelan_interrupt(int irq, + void * dev_id) +{ + struct net_device * dev = dev_id; + net_local * lp; + unsigned int base; + int status0; + u_int tx_status; + +#ifdef DEBUG_INTERRUPT_TRACE + printk(KERN_DEBUG "%s: ->wavelan_interrupt()\n", dev->name); +#endif + + lp = netdev_priv(dev); + base = dev->base_addr; + +#ifdef DEBUG_INTERRUPT_INFO + /* Check state of our spinlock (it should be cleared) */ + if(spin_is_locked(&lp->spinlock)) + printk(KERN_DEBUG + "%s: wavelan_interrupt(): spinlock is already locked !!!\n", + dev->name); +#endif + + /* Prevent reentrancy. We need to do that because we may have + * multiple interrupt handler running concurently. + * It is safe because interrupts are disabled before aquiring + * the spinlock. */ + spin_lock(&lp->spinlock); + + /* Treat all pending interrupts */ + while(1) + { + /* ---------------- INTERRUPT CHECKING ---------------- */ + /* + * Look for the interrupt and verify the validity + */ + outb(CR0_STATUS_0 | OP0_NOP, LCCR(base)); + status0 = inb(LCSR(base)); + +#ifdef DEBUG_INTERRUPT_INFO + printk(KERN_DEBUG "status0 0x%x [%s => 0x%x]", status0, + (status0&SR0_INTERRUPT)?"int":"no int",status0&~SR0_INTERRUPT); + if(status0&SR0_INTERRUPT) + { + printk(" [%s => %d]\n", (status0 & SR0_CHNL) ? "chnl" : + ((status0 & SR0_EXECUTION) ? "cmd" : + ((status0 & SR0_RECEPTION) ? "recv" : "unknown")), + (status0 & SR0_EVENT_MASK)); + } + else + printk("\n"); +#endif + + /* Return if no actual interrupt from i82593 (normal exit) */ + if(!(status0 & SR0_INTERRUPT)) + break; + + /* If interrupt is both Rx and Tx or none... + * This code in fact is there to catch the spurious interrupt + * when you remove the wavelan pcmcia card from the socket */ + if(((status0 & SR0_BOTH_RX_TX) == SR0_BOTH_RX_TX) || + ((status0 & SR0_BOTH_RX_TX) == 0x0)) + { +#ifdef DEBUG_INTERRUPT_INFO + printk(KERN_INFO "%s: wv_interrupt(): bogus interrupt (or from dead card) : %X\n", + dev->name, status0); +#endif + /* Acknowledge the interrupt */ + outb(CR0_INT_ACK | OP0_NOP, LCCR(base)); + break; + } + + /* ----------------- RECEIVING PACKET ----------------- */ + /* + * When the wavelan signal the reception of a new packet, + * we call wv_packet_rcv() to copy if from the buffer and + * send it to NET3 + */ + if(status0 & SR0_RECEPTION) + { +#ifdef DEBUG_INTERRUPT_INFO + printk(KERN_DEBUG "%s: wv_interrupt(): receive\n", dev->name); +#endif + + if((status0 & SR0_EVENT_MASK) == SR0_STOP_REG_HIT) + { +#ifdef DEBUG_INTERRUPT_ERROR + printk(KERN_INFO "%s: wv_interrupt(): receive buffer overflow\n", + dev->name); +#endif + dev->stats.rx_over_errors++; + lp->overrunning = 1; + } + + /* Get the packet */ + wv_packet_rcv(dev); + lp->overrunning = 0; + + /* Acknowledge the interrupt */ + outb(CR0_INT_ACK | OP0_NOP, LCCR(base)); + continue; + } + + /* ---------------- COMMAND COMPLETION ---------------- */ + /* + * Interrupts issued when the i82593 has completed a command. + * Most likely : transmission done + */ + + /* If a transmission has been done */ + if((status0 & SR0_EVENT_MASK) == SR0_TRANSMIT_DONE || + (status0 & SR0_EVENT_MASK) == SR0_RETRANSMIT_DONE || + (status0 & SR0_EVENT_MASK) == SR0_TRANSMIT_NO_CRC_DONE) + { +#ifdef DEBUG_TX_ERROR + if((status0 & SR0_EVENT_MASK) == SR0_TRANSMIT_NO_CRC_DONE) + printk(KERN_INFO "%s: wv_interrupt(): packet transmitted without CRC.\n", + dev->name); +#endif + + /* Get transmission status */ + tx_status = inb(LCSR(base)); + tx_status |= (inb(LCSR(base)) << 8); +#ifdef DEBUG_INTERRUPT_INFO + printk(KERN_DEBUG "%s: wv_interrupt(): transmission done\n", + dev->name); + { + u_int rcv_bytes; + u_char status3; + rcv_bytes = inb(LCSR(base)); + rcv_bytes |= (inb(LCSR(base)) << 8); + status3 = inb(LCSR(base)); + printk(KERN_DEBUG "tx_status 0x%02x rcv_bytes 0x%02x status3 0x%x\n", + tx_status, rcv_bytes, (u_int) status3); + } +#endif + /* Check for possible errors */ + if((tx_status & TX_OK) != TX_OK) + { + dev->stats.tx_errors++; + + if(tx_status & TX_FRTL) + { +#ifdef DEBUG_TX_ERROR + printk(KERN_INFO "%s: wv_interrupt(): frame too long\n", + dev->name); +#endif + } + if(tx_status & TX_UND_RUN) + { +#ifdef DEBUG_TX_FAIL + printk(KERN_DEBUG "%s: wv_interrupt(): DMA underrun\n", + dev->name); +#endif + dev->stats.tx_aborted_errors++; + } + if(tx_status & TX_LOST_CTS) + { +#ifdef DEBUG_TX_FAIL + printk(KERN_DEBUG "%s: wv_interrupt(): no CTS\n", dev->name); +#endif + dev->stats.tx_carrier_errors++; + } + if(tx_status & TX_LOST_CRS) + { +#ifdef DEBUG_TX_FAIL + printk(KERN_DEBUG "%s: wv_interrupt(): no carrier\n", + dev->name); +#endif + dev->stats.tx_carrier_errors++; + } + if(tx_status & TX_HRT_BEAT) + { +#ifdef DEBUG_TX_FAIL + printk(KERN_DEBUG "%s: wv_interrupt(): heart beat\n", dev->name); +#endif + dev->stats.tx_heartbeat_errors++; + } + if(tx_status & TX_DEFER) + { +#ifdef DEBUG_TX_FAIL + printk(KERN_DEBUG "%s: wv_interrupt(): channel jammed\n", + dev->name); +#endif + } + /* Ignore late collisions since they're more likely to happen + * here (the WaveLAN design prevents the LAN controller from + * receiving while it is transmitting). We take action only when + * the maximum retransmit attempts is exceeded. + */ + if(tx_status & TX_COLL) + { + if(tx_status & TX_MAX_COL) + { +#ifdef DEBUG_TX_FAIL + printk(KERN_DEBUG "%s: wv_interrupt(): channel congestion\n", + dev->name); +#endif + if(!(tx_status & TX_NCOL_MASK)) + { + dev->stats.collisions += 0x10; + } + } + } + } /* if(!(tx_status & TX_OK)) */ + + dev->stats.collisions += (tx_status & TX_NCOL_MASK); + dev->stats.tx_packets++; + + netif_wake_queue(dev); + outb(CR0_INT_ACK | OP0_NOP, LCCR(base)); /* Acknowledge the interrupt */ + } + else /* if interrupt = transmit done or retransmit done */ + { +#ifdef DEBUG_INTERRUPT_ERROR + printk(KERN_INFO "wavelan_cs: unknown interrupt, status0 = %02x\n", + status0); +#endif + outb(CR0_INT_ACK | OP0_NOP, LCCR(base)); /* Acknowledge the interrupt */ + } + } /* while(1) */ + + spin_unlock(&lp->spinlock); + +#ifdef DEBUG_INTERRUPT_TRACE + printk(KERN_DEBUG "%s: <-wavelan_interrupt()\n", dev->name); +#endif + + /* We always return IRQ_HANDLED, because we will receive empty + * interrupts under normal operations. Anyway, it doesn't matter + * as we are dealing with an ISA interrupt that can't be shared. + * + * Explanation : under heavy receive, the following happens : + * ->wavelan_interrupt() + * (status0 & SR0_INTERRUPT) != 0 + * ->wv_packet_rcv() + * (status0 & SR0_INTERRUPT) != 0 + * ->wv_packet_rcv() + * (status0 & SR0_INTERRUPT) == 0 // i.e. no more event + * <-wavelan_interrupt() + * ->wavelan_interrupt() + * (status0 & SR0_INTERRUPT) == 0 // i.e. empty interrupt + * <-wavelan_interrupt() + * Jean II */ + return IRQ_HANDLED; +} /* wv_interrupt */ + +/*------------------------------------------------------------------*/ +/* + * Watchdog: when we start a transmission, a timer is set for us in the + * kernel. If the transmission completes, this timer is disabled. If + * the timer expires, we are called and we try to unlock the hardware. + * + * Note : This watchdog is move clever than the one in the ISA driver, + * because it try to abort the current command before reseting + * everything... + * On the other hand, it's a bit simpler, because we don't have to + * deal with the multiple Tx buffers... + */ +static void +wavelan_watchdog(struct net_device * dev) +{ + net_local * lp = netdev_priv(dev); + unsigned int base = dev->base_addr; + unsigned long flags; + int aborted = FALSE; + +#ifdef DEBUG_INTERRUPT_TRACE + printk(KERN_DEBUG "%s: ->wavelan_watchdog()\n", dev->name); +#endif + +#ifdef DEBUG_INTERRUPT_ERROR + printk(KERN_INFO "%s: wavelan_watchdog: watchdog timer expired\n", + dev->name); +#endif + + spin_lock_irqsave(&lp->spinlock, flags); + + /* Ask to abort the current command */ + outb(OP0_ABORT, LCCR(base)); + + /* Wait for the end of the command (a bit hackish) */ + if(wv_82593_cmd(dev, "wavelan_watchdog(): abort", + OP0_NOP | CR0_STATUS_3, SR0_EXECUTION_ABORTED)) + aborted = TRUE; + + /* Release spinlock here so that wv_hw_reset() can grab it */ + spin_unlock_irqrestore(&lp->spinlock, flags); + + /* Check if we were successful in aborting it */ + if(!aborted) + { + /* It seem that it wasn't enough */ +#ifdef DEBUG_INTERRUPT_ERROR + printk(KERN_INFO "%s: wavelan_watchdog: abort failed, trying reset\n", + dev->name); +#endif + wv_hw_reset(dev); + } + +#ifdef DEBUG_PSA_SHOW + { + psa_t psa; + psa_read(dev, 0, (unsigned char *) &psa, sizeof(psa)); + wv_psa_show(&psa); + } +#endif +#ifdef DEBUG_MMC_SHOW + wv_mmc_show(dev); +#endif +#ifdef DEBUG_I82593_SHOW + wv_ru_show(dev); +#endif + + /* We are no more waiting for something... */ + netif_wake_queue(dev); + +#ifdef DEBUG_INTERRUPT_TRACE + printk(KERN_DEBUG "%s: <-wavelan_watchdog()\n", dev->name); +#endif +} + +/********************* CONFIGURATION CALLBACKS *********************/ +/* + * Here are the functions called by the pcmcia package (cardmgr) and + * linux networking (NET3) for initialization, configuration and + * deinstallations of the Wavelan Pcmcia Hardware. + */ + +/*------------------------------------------------------------------*/ +/* + * Configure and start up the WaveLAN PCMCIA adaptor. + * Called by NET3 when it "open" the device. + */ +static int +wavelan_open(struct net_device * dev) +{ + net_local * lp = netdev_priv(dev); + struct pcmcia_device * link = lp->link; + unsigned int base = dev->base_addr; + +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG "%s: ->wavelan_open(dev=0x%x)\n", dev->name, + (unsigned int) dev); +#endif + + /* Check if the modem is powered up (wavelan_close() power it down */ + if(hasr_read(base) & HASR_NO_CLK) + { + /* Power up (power up time is 250us) */ + hacr_write(base, HACR_DEFAULT); + + /* Check if the module has been powered up... */ + if(hasr_read(base) & HASR_NO_CLK) + { +#ifdef DEBUG_CONFIG_ERRORS + printk(KERN_WARNING "%s: wavelan_open(): modem not connected\n", + dev->name); +#endif + return FALSE; + } + } + + /* Start reception and declare the driver ready */ + if(!lp->configured) + return FALSE; + if(!wv_ru_start(dev)) + wv_hw_reset(dev); /* If problem : reset */ + netif_start_queue(dev); + + /* Mark the device as used */ + link->open++; + +#ifdef WAVELAN_ROAMING + if(do_roaming) + wv_roam_init(dev); +#endif /* WAVELAN_ROAMING */ + +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG "%s: <-wavelan_open()\n", dev->name); +#endif + return 0; +} + +/*------------------------------------------------------------------*/ +/* + * Shutdown the WaveLAN PCMCIA adaptor. + * Called by NET3 when it "close" the device. + */ +static int +wavelan_close(struct net_device * dev) +{ + struct pcmcia_device * link = ((net_local *)netdev_priv(dev))->link; + unsigned int base = dev->base_addr; + +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG "%s: ->wavelan_close(dev=0x%x)\n", dev->name, + (unsigned int) dev); +#endif + + /* If the device isn't open, then nothing to do */ + if(!link->open) + { +#ifdef DEBUG_CONFIG_INFO + printk(KERN_DEBUG "%s: wavelan_close(): device not open\n", dev->name); +#endif + return 0; + } + +#ifdef WAVELAN_ROAMING + /* Cleanup of roaming stuff... */ + if(do_roaming) + wv_roam_cleanup(dev); +#endif /* WAVELAN_ROAMING */ + + link->open--; + + /* If the card is still present */ + if(netif_running(dev)) + { + netif_stop_queue(dev); + + /* Stop receiving new messages and wait end of transmission */ + wv_ru_stop(dev); + + /* Power down the module */ + hacr_write(base, HACR_DEFAULT & (~HACR_PWR_STAT)); + } + +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG "%s: <-wavelan_close()\n", dev->name); +#endif + return 0; +} + +static const struct net_device_ops wavelan_netdev_ops = { + .ndo_open = wavelan_open, + .ndo_stop = wavelan_close, + .ndo_start_xmit = wavelan_packet_xmit, + .ndo_set_multicast_list = wavelan_set_multicast_list, +#ifdef SET_MAC_ADDRESS + .ndo_set_mac_address = wavelan_set_mac_address, +#endif + .ndo_tx_timeout = wavelan_watchdog, + .ndo_change_mtu = eth_change_mtu, + .ndo_validate_addr = eth_validate_addr, +}; + +/*------------------------------------------------------------------*/ +/* + * wavelan_attach() creates an "instance" of the driver, allocating + * local data structures for one device (one interface). The device + * is registered with Card Services. + * + * The dev_link structure is initialized, but we don't actually + * configure the card at this point -- we wait until we receive a + * card insertion event. + */ +static int +wavelan_probe(struct pcmcia_device *p_dev) +{ + struct net_device * dev; /* Interface generic data */ + net_local * lp; /* Interface specific data */ + int ret; + +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG "-> wavelan_attach()\n"); +#endif + + /* The io structure describes IO port mapping */ + p_dev->io.NumPorts1 = 8; + p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8; + p_dev->io.IOAddrLines = 3; + + /* Interrupt setup */ + p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; + p_dev->irq.Handler = wavelan_interrupt; + + /* General socket configuration */ + p_dev->conf.Attributes = CONF_ENABLE_IRQ; + p_dev->conf.IntType = INT_MEMORY_AND_IO; + + /* Allocate the generic data structure */ + dev = alloc_etherdev(sizeof(net_local)); + if (!dev) + return -ENOMEM; + + p_dev->priv = dev; + + lp = netdev_priv(dev); + + /* Init specific data */ + lp->configured = 0; + lp->reconfig_82593 = FALSE; + lp->nresets = 0; + /* Multicast stuff */ + lp->promiscuous = 0; + lp->allmulticast = 0; + lp->mc_count = 0; + + /* Init spinlock */ + spin_lock_init(&lp->spinlock); + + /* back links */ + lp->dev = dev; + + /* wavelan NET3 callbacks */ + dev->netdev_ops = &wavelan_netdev_ops; + dev->watchdog_timeo = WATCHDOG_JIFFIES; + SET_ETHTOOL_OPS(dev, &ops); + + dev->wireless_handlers = &wavelan_handler_def; + lp->wireless_data.spy_data = &lp->spy_data; + dev->wireless_data = &lp->wireless_data; + + /* Other specific data */ + dev->mtu = WAVELAN_MTU; + + ret = wv_pcmcia_config(p_dev); + if (ret) + return ret; + + ret = wv_hw_config(dev); + if (ret) { + dev->irq = 0; + pcmcia_disable_device(p_dev); + return ret; + } + + wv_init_info(dev); + +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG "<- wavelan_attach()\n"); +#endif + + return 0; +} + +/*------------------------------------------------------------------*/ +/* + * This deletes a driver "instance". The device is de-registered with + * Card Services. If it has been released, all local data structures + * are freed. Otherwise, the structures will be freed when the device + * is released. + */ +static void +wavelan_detach(struct pcmcia_device *link) +{ +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG "-> wavelan_detach(0x%p)\n", link); +#endif + + /* Some others haven't done their job : give them another chance */ + wv_pcmcia_release(link); + + /* Free pieces */ + if(link->priv) + { + struct net_device * dev = (struct net_device *) link->priv; + + /* Remove ourselves from the kernel list of ethernet devices */ + /* Warning : can't be called from interrupt, timer or wavelan_close() */ + if (link->dev_node) + unregister_netdev(dev); + link->dev_node = NULL; + ((net_local *)netdev_priv(dev))->link = NULL; + ((net_local *)netdev_priv(dev))->dev = NULL; + free_netdev(dev); + } + +#ifdef DEBUG_CALLBACK_TRACE + printk(KERN_DEBUG "<- wavelan_detach()\n"); +#endif +} + +static int wavelan_suspend(struct pcmcia_device *link) +{ + struct net_device * dev = (struct net_device *) link->priv; + + /* NB: wavelan_close will be called, but too late, so we are + * obliged to close nicely the wavelan here. David, could you + * close the device before suspending them ? And, by the way, + * could you, on resume, add a "route add -net ..." after the + * ifconfig up ? Thanks... */ + + /* Stop receiving new messages and wait end of transmission */ + wv_ru_stop(dev); + + if (link->open) + netif_device_detach(dev); + + /* Power down the module */ + hacr_write(dev->base_addr, HACR_DEFAULT & (~HACR_PWR_STAT)); + + return 0; +} + +static int wavelan_resume(struct pcmcia_device *link) +{ + struct net_device * dev = (struct net_device *) link->priv; + + if (link->open) { + wv_hw_reset(dev); + netif_device_attach(dev); + } + + return 0; +} + + +static struct pcmcia_device_id wavelan_ids[] = { + PCMCIA_DEVICE_PROD_ID12("AT&T","WaveLAN/PCMCIA", 0xe7c5affd, 0x1bc50975), + PCMCIA_DEVICE_PROD_ID12("Digital", "RoamAbout/DS", 0x9999ab35, 0x00d05e06), + PCMCIA_DEVICE_PROD_ID12("Lucent Technologies", "WaveLAN/PCMCIA", 0x23eb9949, 0x1bc50975), + PCMCIA_DEVICE_PROD_ID12("NCR", "WaveLAN/PCMCIA", 0x24358cd4, 0x1bc50975), + PCMCIA_DEVICE_NULL, +}; +MODULE_DEVICE_TABLE(pcmcia, wavelan_ids); + +static struct pcmcia_driver wavelan_driver = { + .owner = THIS_MODULE, + .drv = { + .name = "wavelan_cs", + }, + .probe = wavelan_probe, + .remove = wavelan_detach, + .id_table = wavelan_ids, + .suspend = wavelan_suspend, + .resume = wavelan_resume, +}; + +static int __init +init_wavelan_cs(void) +{ + return pcmcia_register_driver(&wavelan_driver); +} + +static void __exit +exit_wavelan_cs(void) +{ + pcmcia_unregister_driver(&wavelan_driver); +} + +module_init(init_wavelan_cs); +module_exit(exit_wavelan_cs); diff --git a/drivers/staging/wavelan/wavelan_cs.h b/drivers/staging/wavelan/wavelan_cs.h new file mode 100644 index 000000000000..2e4bfe4147c6 --- /dev/null +++ b/drivers/staging/wavelan/wavelan_cs.h @@ -0,0 +1,386 @@ +/* + * Wavelan Pcmcia driver + * + * Jean II - HPLB '96 + * + * Reorganization and extension of the driver. + * Original copyright follow. See wavelan_cs.h for details. + * + * This file contain the declarations of the Wavelan hardware. Note that + * the Pcmcia Wavelan include a i82593 controller (see definitions in + * file i82593.h). + * + * The main difference between the pcmcia hardware and the ISA one is + * the Ethernet Controller (i82593 instead of i82586). The i82593 allow + * only one send buffer. The PSA (Parameter Storage Area : EEprom for + * permanent storage of various info) is memory mapped, but not the + * MMI (Modem Management Interface). + */ + +/* + * Definitions for the AT&T GIS (formerly NCR) WaveLAN PCMCIA card: + * An Ethernet-like radio transceiver controlled by an Intel 82593 + * coprocessor. + * + * + **************************************************************************** + * Copyright 1995 + * Anthony D. Joseph + * Massachusetts Institute of Technology + * + * Permission to use, copy, modify, and distribute this program + * for any purpose and without fee is hereby granted, provided + * that this copyright and permission notice appear on all copies + * and supporting documentation, the name of M.I.T. not be used + * in advertising or publicity pertaining to distribution of the + * program without specific prior permission, and notice be given + * in supporting documentation that copying and distribution is + * by permission of M.I.T. M.I.T. makes no representations about + * the suitability of this software for any purpose. It is pro- + * vided "as is" without express or implied warranty. + **************************************************************************** + * + * + * Credits: + * Special thanks to Jan Hoogendoorn of AT&T GIS Utrecht for + * providing extremely useful information about WaveLAN PCMCIA hardware + * + * This driver is based upon several other drivers, in particular: + * David Hinds' Linux driver for the PCMCIA 3c589 ethernet adapter + * Bruce Janson's Linux driver for the AT-bus WaveLAN adapter + * Anders Klemets' PCMCIA WaveLAN adapter driver + * Robert Morris' BSDI driver for the PCMCIA WaveLAN adapter + */ + +#ifndef _WAVELAN_CS_H +#define _WAVELAN_CS_H + +/************************** MAGIC NUMBERS ***************************/ + +/* The detection of the wavelan card is made by reading the MAC address + * from the card and checking it. If you have a non AT&T product (OEM, + * like DEC RoamAbout, or Digital Ocean, Epson, ...), you must modify this + * part to accommodate your hardware... + */ +static const unsigned char MAC_ADDRESSES[][3] = +{ + { 0x08, 0x00, 0x0E }, /* AT&T Wavelan (standard) & DEC RoamAbout */ + { 0x08, 0x00, 0x6A }, /* AT&T Wavelan (alternate) */ + { 0x00, 0x00, 0xE1 }, /* Hitachi Wavelan */ + { 0x00, 0x60, 0x1D } /* Lucent Wavelan (another one) */ + /* Add your card here and send me the patch ! */ +}; + +/* + * Constants used to convert channels to frequencies + */ + +/* Frequency available in the 2.0 modem, in units of 250 kHz + * (as read in the offset register of the dac area). + * Used to map channel numbers used by `wfreqsel' to frequencies + */ +static const short channel_bands[] = { 0x30, 0x58, 0x64, 0x7A, 0x80, 0xA8, + 0xD0, 0xF0, 0xF8, 0x150 }; + +/* Frequencies of the 1.0 modem (fixed frequencies). + * Use to map the PSA `subband' to a frequency + * Note : all frequencies apart from the first one need to be multiplied by 10 + */ +static const int fixed_bands[] = { 915e6, 2.425e8, 2.46e8, 2.484e8, 2.4305e8 }; + + +/*************************** PC INTERFACE ****************************/ + +/* WaveLAN host interface definitions */ + +#define LCCR(base) (base) /* LAN Controller Command Register */ +#define LCSR(base) (base) /* LAN Controller Status Register */ +#define HACR(base) (base+0x1) /* Host Adapter Command Register */ +#define HASR(base) (base+0x1) /* Host Adapter Status Register */ +#define PIORL(base) (base+0x2) /* Program I/O Register Low */ +#define RPLL(base) (base+0x2) /* Receive Pointer Latched Low */ +#define PIORH(base) (base+0x3) /* Program I/O Register High */ +#define RPLH(base) (base+0x3) /* Receive Pointer Latched High */ +#define PIOP(base) (base+0x4) /* Program I/O Port */ +#define MMR(base) (base+0x6) /* MMI Address Register */ +#define MMD(base) (base+0x7) /* MMI Data Register */ + +/* Host Adaptor Command Register bit definitions */ + +#define HACR_LOF (1 << 3) /* Lock Out Flag, toggle every 250ms */ +#define HACR_PWR_STAT (1 << 4) /* Power State, 1=active, 0=sleep */ +#define HACR_TX_DMA_RESET (1 << 5) /* Reset transmit DMA ptr on high */ +#define HACR_RX_DMA_RESET (1 << 6) /* Reset receive DMA ptr on high */ +#define HACR_ROM_WEN (1 << 7) /* EEPROM write enabled when true */ + +#define HACR_RESET (HACR_TX_DMA_RESET | HACR_RX_DMA_RESET) +#define HACR_DEFAULT (HACR_PWR_STAT) + +/* Host Adapter Status Register bit definitions */ + +#define HASR_MMI_BUSY (1 << 2) /* MMI is busy when true */ +#define HASR_LOF (1 << 3) /* Lock out flag status */ +#define HASR_NO_CLK (1 << 4) /* active when modem not connected */ + +/* Miscellaneous bit definitions */ + +#define PIORH_SEL_TX (1 << 5) /* PIOR points to 0=rx/1=tx buffer */ +#define MMR_MMI_WR (1 << 0) /* Next MMI cycle is 0=read, 1=write */ +#define PIORH_MASK 0x1f /* only low 5 bits are significant */ +#define RPLH_MASK 0x1f /* only low 5 bits are significant */ +#define MMI_ADDR_MASK 0x7e /* Bits 1-6 of MMR are significant */ + +/* Attribute Memory map */ + +#define CIS_ADDR 0x0000 /* Card Information Status Register */ +#define PSA_ADDR 0x0e00 /* Parameter Storage Area address */ +#define EEPROM_ADDR 0x1000 /* EEPROM address (unused ?) */ +#define COR_ADDR 0x4000 /* Configuration Option Register */ + +/* Configuration Option Register bit definitions */ + +#define COR_CONFIG (1 << 0) /* Config Index, 0 when unconfigured */ +#define COR_SW_RESET (1 << 7) /* Software Reset on true */ +#define COR_LEVEL_IRQ (1 << 6) /* Level IRQ */ + +/* Local Memory map */ + +#define RX_BASE 0x0000 /* Receive memory, 8 kB */ +#define TX_BASE 0x2000 /* Transmit memory, 2 kB */ +#define UNUSED_BASE 0x2800 /* Unused, 22 kB */ +#define RX_SIZE (TX_BASE-RX_BASE) /* Size of receive area */ +#define RX_SIZE_SHIFT 6 /* Bits to shift in stop register */ + +#define TRUE 1 +#define FALSE 0 + +#define MOD_ENAL 1 +#define MOD_PROM 2 + +/* Size of a MAC address */ +#define WAVELAN_ADDR_SIZE 6 + +/* Maximum size of Wavelan packet */ +#define WAVELAN_MTU 1500 + +#define MAXDATAZ (6 + 6 + 2 + WAVELAN_MTU) + +/********************** PARAMETER STORAGE AREA **********************/ + +/* + * Parameter Storage Area (PSA). + */ +typedef struct psa_t psa_t; +struct psa_t +{ + /* For the PCMCIA Adapter, locations 0x00-0x0F are unused and fixed at 00 */ + unsigned char psa_io_base_addr_1; /* [0x00] Base address 1 ??? */ + unsigned char psa_io_base_addr_2; /* [0x01] Base address 2 */ + unsigned char psa_io_base_addr_3; /* [0x02] Base address 3 */ + unsigned char psa_io_base_addr_4; /* [0x03] Base address 4 */ + unsigned char psa_rem_boot_addr_1; /* [0x04] Remote Boot Address 1 */ + unsigned char psa_rem_boot_addr_2; /* [0x05] Remote Boot Address 2 */ + unsigned char psa_rem_boot_addr_3; /* [0x06] Remote Boot Address 3 */ + unsigned char psa_holi_params; /* [0x07] HOst Lan Interface (HOLI) Parameters */ + unsigned char psa_int_req_no; /* [0x08] Interrupt Request Line */ + unsigned char psa_unused0[7]; /* [0x09-0x0F] unused */ + + unsigned char psa_univ_mac_addr[WAVELAN_ADDR_SIZE]; /* [0x10-0x15] Universal (factory) MAC Address */ + unsigned char psa_local_mac_addr[WAVELAN_ADDR_SIZE]; /* [0x16-1B] Local MAC Address */ + unsigned char psa_univ_local_sel; /* [0x1C] Universal Local Selection */ +#define PSA_UNIVERSAL 0 /* Universal (factory) */ +#define PSA_LOCAL 1 /* Local */ + unsigned char psa_comp_number; /* [0x1D] Compatability Number: */ +#define PSA_COMP_PC_AT_915 0 /* PC-AT 915 MHz */ +#define PSA_COMP_PC_MC_915 1 /* PC-MC 915 MHz */ +#define PSA_COMP_PC_AT_2400 2 /* PC-AT 2.4 GHz */ +#define PSA_COMP_PC_MC_2400 3 /* PC-MC 2.4 GHz */ +#define PSA_COMP_PCMCIA_915 4 /* PCMCIA 915 MHz or 2.0 */ + unsigned char psa_thr_pre_set; /* [0x1E] Modem Threshold Preset */ + unsigned char psa_feature_select; /* [0x1F] Call code required (1=on) */ +#define PSA_FEATURE_CALL_CODE 0x01 /* Call code required (Japan) */ + unsigned char psa_subband; /* [0x20] Subband */ +#define PSA_SUBBAND_915 0 /* 915 MHz or 2.0 */ +#define PSA_SUBBAND_2425 1 /* 2425 MHz */ +#define PSA_SUBBAND_2460 2 /* 2460 MHz */ +#define PSA_SUBBAND_2484 3 /* 2484 MHz */ +#define PSA_SUBBAND_2430_5 4 /* 2430.5 MHz */ + unsigned char psa_quality_thr; /* [0x21] Modem Quality Threshold */ + unsigned char psa_mod_delay; /* [0x22] Modem Delay ??? (reserved) */ + unsigned char psa_nwid[2]; /* [0x23-0x24] Network ID */ + unsigned char psa_nwid_select; /* [0x25] Network ID Select On Off */ + unsigned char psa_encryption_select; /* [0x26] Encryption On Off */ + unsigned char psa_encryption_key[8]; /* [0x27-0x2E] Encryption Key */ + unsigned char psa_databus_width; /* [0x2F] AT bus width select 8/16 */ + unsigned char psa_call_code[8]; /* [0x30-0x37] (Japan) Call Code */ + unsigned char psa_nwid_prefix[2]; /* [0x38-0x39] Roaming domain */ + unsigned char psa_reserved[2]; /* [0x3A-0x3B] Reserved - fixed 00 */ + unsigned char psa_conf_status; /* [0x3C] Conf Status, bit 0=1:config*/ + unsigned char psa_crc[2]; /* [0x3D] CRC-16 over PSA */ + unsigned char psa_crc_status; /* [0x3F] CRC Valid Flag */ +}; + +/* Size for structure checking (if padding is correct) */ +#define PSA_SIZE 64 + +/* Calculate offset of a field in the above structure + * Warning : only even addresses are used */ +#define psaoff(p,f) ((unsigned short) ((void *)(&((psa_t *) ((void *) NULL + (p)))->f) - (void *) NULL)) + +/******************** MODEM MANAGEMENT INTERFACE ********************/ + +/* + * Modem Management Controller (MMC) write structure. + */ +typedef struct mmw_t mmw_t; +struct mmw_t +{ + unsigned char mmw_encr_key[8]; /* encryption key */ + unsigned char mmw_encr_enable; /* enable/disable encryption */ +#define MMW_ENCR_ENABLE_MODE 0x02 /* Mode of security option */ +#define MMW_ENCR_ENABLE_EN 0x01 /* Enable security option */ + unsigned char mmw_unused0[1]; /* unused */ + unsigned char mmw_des_io_invert; /* Encryption option */ +#define MMW_DES_IO_INVERT_RES 0x0F /* Reserved */ +#define MMW_DES_IO_INVERT_CTRL 0xF0 /* Control ??? (set to 0) */ + unsigned char mmw_unused1[5]; /* unused */ + unsigned char mmw_loopt_sel; /* looptest selection */ +#define MMW_LOOPT_SEL_DIS_NWID 0x40 /* disable NWID filtering */ +#define MMW_LOOPT_SEL_INT 0x20 /* activate Attention Request */ +#define MMW_LOOPT_SEL_LS 0x10 /* looptest w/o collision avoidance */ +#define MMW_LOOPT_SEL_LT3A 0x08 /* looptest 3a */ +#define MMW_LOOPT_SEL_LT3B 0x04 /* looptest 3b */ +#define MMW_LOOPT_SEL_LT3C 0x02 /* looptest 3c */ +#define MMW_LOOPT_SEL_LT3D 0x01 /* looptest 3d */ + unsigned char mmw_jabber_enable; /* jabber timer enable */ + /* Abort transmissions > 200 ms */ + unsigned char mmw_freeze; /* freeze / unfreeeze signal level */ + /* 0 : signal level & qual updated for every new message, 1 : frozen */ + unsigned char mmw_anten_sel; /* antenna selection */ +#define MMW_ANTEN_SEL_SEL 0x01 /* direct antenna selection */ +#define MMW_ANTEN_SEL_ALG_EN 0x02 /* antenna selection algo. enable */ + unsigned char mmw_ifs; /* inter frame spacing */ + /* min time between transmission in bit periods (.5 us) - bit 0 ignored */ + unsigned char mmw_mod_delay; /* modem delay (synchro) */ + unsigned char mmw_jam_time; /* jamming time (after collision) */ + unsigned char mmw_unused2[1]; /* unused */ + unsigned char mmw_thr_pre_set; /* level threshold preset */ + /* Discard all packet with signal < this value (4) */ + unsigned char mmw_decay_prm; /* decay parameters */ + unsigned char mmw_decay_updat_prm; /* decay update parameterz */ + unsigned char mmw_quality_thr; /* quality (z-quotient) threshold */ + /* Discard all packet with quality < this value (3) */ + unsigned char mmw_netw_id_l; /* NWID low order byte */ + unsigned char mmw_netw_id_h; /* NWID high order byte */ + /* Network ID or Domain : create virtual net on the air */ + + /* 2.0 Hardware extension - frequency selection support */ + unsigned char mmw_mode_select; /* for analog tests (set to 0) */ + unsigned char mmw_unused3[1]; /* unused */ + unsigned char mmw_fee_ctrl; /* frequency eeprom control */ +#define MMW_FEE_CTRL_PRE 0x10 /* Enable protected instructions */ +#define MMW_FEE_CTRL_DWLD 0x08 /* Download eeprom to mmc */ +#define MMW_FEE_CTRL_CMD 0x07 /* EEprom commands : */ +#define MMW_FEE_CTRL_READ 0x06 /* Read */ +#define MMW_FEE_CTRL_WREN 0x04 /* Write enable */ +#define MMW_FEE_CTRL_WRITE 0x05 /* Write data to address */ +#define MMW_FEE_CTRL_WRALL 0x04 /* Write data to all addresses */ +#define MMW_FEE_CTRL_WDS 0x04 /* Write disable */ +#define MMW_FEE_CTRL_PRREAD 0x16 /* Read addr from protect register */ +#define MMW_FEE_CTRL_PREN 0x14 /* Protect register enable */ +#define MMW_FEE_CTRL_PRCLEAR 0x17 /* Unprotect all registers */ +#define MMW_FEE_CTRL_PRWRITE 0x15 /* Write addr in protect register */ +#define MMW_FEE_CTRL_PRDS 0x14 /* Protect register disable */ + /* Never issue this command (PRDS) : it's irreversible !!! */ + + unsigned char mmw_fee_addr; /* EEprom address */ +#define MMW_FEE_ADDR_CHANNEL 0xF0 /* Select the channel */ +#define MMW_FEE_ADDR_OFFSET 0x0F /* Offset in channel data */ +#define MMW_FEE_ADDR_EN 0xC0 /* FEE_CTRL enable operations */ +#define MMW_FEE_ADDR_DS 0x00 /* FEE_CTRL disable operations */ +#define MMW_FEE_ADDR_ALL 0x40 /* FEE_CTRL all operations */ +#define MMW_FEE_ADDR_CLEAR 0xFF /* FEE_CTRL clear operations */ + + unsigned char mmw_fee_data_l; /* Write data to EEprom */ + unsigned char mmw_fee_data_h; /* high octet */ + unsigned char mmw_ext_ant; /* Setting for external antenna */ +#define MMW_EXT_ANT_EXTANT 0x01 /* Select external antenna */ +#define MMW_EXT_ANT_POL 0x02 /* Polarity of the antenna */ +#define MMW_EXT_ANT_INTERNAL 0x00 /* Internal antenna */ +#define MMW_EXT_ANT_EXTERNAL 0x03 /* External antenna */ +#define MMW_EXT_ANT_IQ_TEST 0x1C /* IQ test pattern (set to 0) */ +} __attribute__((packed)); + +/* Size for structure checking (if padding is correct) */ +#define MMW_SIZE 37 + +/* Calculate offset of a field in the above structure */ +#define mmwoff(p,f) (unsigned short)((void *)(&((mmw_t *)((void *)0 + (p)))->f) - (void *)0) + + +/* + * Modem Management Controller (MMC) read structure. + */ +typedef struct mmr_t mmr_t; +struct mmr_t +{ + unsigned char mmr_unused0[8]; /* unused */ + unsigned char mmr_des_status; /* encryption status */ + unsigned char mmr_des_avail; /* encryption available (0x55 read) */ +#define MMR_DES_AVAIL_DES 0x55 /* DES available */ +#define MMR_DES_AVAIL_AES 0x33 /* AES (AT&T) available */ + unsigned char mmr_des_io_invert; /* des I/O invert register */ + unsigned char mmr_unused1[5]; /* unused */ + unsigned char mmr_dce_status; /* DCE status */ +#define MMR_DCE_STATUS_RX_BUSY 0x01 /* receiver busy */ +#define MMR_DCE_STATUS_LOOPT_IND 0x02 /* loop test indicated */ +#define MMR_DCE_STATUS_TX_BUSY 0x04 /* transmitter on */ +#define MMR_DCE_STATUS_JBR_EXPIRED 0x08 /* jabber timer expired */ +#define MMR_DCE_STATUS 0x0F /* mask to get the bits */ + unsigned char mmr_dsp_id; /* DSP id (AA = Daedalus rev A) */ + unsigned char mmr_unused2[2]; /* unused */ + unsigned char mmr_correct_nwid_l; /* # of correct NWID's rxd (low) */ + unsigned char mmr_correct_nwid_h; /* # of correct NWID's rxd (high) */ + /* Warning : Read high order octet first !!! */ + unsigned char mmr_wrong_nwid_l; /* # of wrong NWID's rxd (low) */ + unsigned char mmr_wrong_nwid_h; /* # of wrong NWID's rxd (high) */ + unsigned char mmr_thr_pre_set; /* level threshold preset */ +#define MMR_THR_PRE_SET 0x3F /* level threshold preset */ +#define MMR_THR_PRE_SET_CUR 0x80 /* Current signal above it */ + unsigned char mmr_signal_lvl; /* signal level */ +#define MMR_SIGNAL_LVL 0x3F /* signal level */ +#define MMR_SIGNAL_LVL_VALID 0x80 /* Updated since last read */ + unsigned char mmr_silence_lvl; /* silence level (noise) */ +#define MMR_SILENCE_LVL 0x3F /* silence level */ +#define MMR_SILENCE_LVL_VALID 0x80 /* Updated since last read */ + unsigned char mmr_sgnl_qual; /* signal quality */ +#define MMR_SGNL_QUAL 0x0F /* signal quality */ +#define MMR_SGNL_QUAL_ANT 0x80 /* current antenna used */ + unsigned char mmr_netw_id_l; /* NWID low order byte ??? */ + unsigned char mmr_unused3[3]; /* unused */ + + /* 2.0 Hardware extension - frequency selection support */ + unsigned char mmr_fee_status; /* Status of frequency eeprom */ +#define MMR_FEE_STATUS_ID 0xF0 /* Modem revision id */ +#define MMR_FEE_STATUS_DWLD 0x08 /* Download in progress */ +#define MMR_FEE_STATUS_BUSY 0x04 /* EEprom busy */ + unsigned char mmr_unused4[1]; /* unused */ + unsigned char mmr_fee_data_l; /* Read data from eeprom (low) */ + unsigned char mmr_fee_data_h; /* Read data from eeprom (high) */ +}; + +/* Size for structure checking (if padding is correct) */ +#define MMR_SIZE 36 + +/* Calculate offset of a field in the above structure */ +#define mmroff(p,f) (unsigned short)((void *)(&((mmr_t *)((void *)0 + (p)))->f) - (void *)0) + + +/* Make the two above structures one */ +typedef union mm_t +{ + struct mmw_t w; /* Write to the mmc */ + struct mmr_t r; /* Read from the mmc */ +} mm_t; + +#endif /* _WAVELAN_CS_H */ diff --git a/drivers/staging/wavelan/wavelan_cs.p.h b/drivers/staging/wavelan/wavelan_cs.p.h new file mode 100644 index 000000000000..8fbfaa8a5a67 --- /dev/null +++ b/drivers/staging/wavelan/wavelan_cs.p.h @@ -0,0 +1,766 @@ +/* + * Wavelan Pcmcia driver + * + * Jean II - HPLB '96 + * + * Reorganisation and extension of the driver. + * + * This file contain all definition and declarations necessary for the + * wavelan pcmcia driver. This file is a private header, so it should + * be included only on wavelan_cs.c !!! + */ + +#ifndef WAVELAN_CS_P_H +#define WAVELAN_CS_P_H + +/************************** DOCUMENTATION **************************/ +/* + * This driver provide a Linux interface to the Wavelan Pcmcia hardware + * The Wavelan is a product of Lucent (http://www.wavelan.com/). + * This division was formerly part of NCR and then AT&T. + * Wavelan are also distributed by DEC (RoamAbout DS)... + * + * To know how to use this driver, read the PCMCIA HOWTO. + * If you want to exploit the many other fonctionalities, look comments + * in the code... + * + * This driver is the result of the effort of many peoples (see below). + */ + +/* ------------------------ SPECIFIC NOTES ------------------------ */ +/* + * Web page + * -------- + * I try to maintain a web page with the Wireless LAN Howto at : + * http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Wavelan.html + * + * SMP + * --- + * We now are SMP compliant (I eventually fixed the remaining bugs). + * The driver has been tested on a dual P6-150 and survived my usual + * set of torture tests. + * Anyway, I spent enough time chasing interrupt re-entrancy during + * errors or reconfigure, and I designed the locked/unlocked sections + * of the driver with great care, and with the recent addition of + * the spinlock (thanks to the new API), we should be quite close to + * the truth. + * The SMP/IRQ locking is quite coarse and conservative (i.e. not fast), + * but better safe than sorry (especially at 2 Mb/s ;-). + * + * I have also looked into disabling only our interrupt on the card + * (via HACR) instead of all interrupts in the processor (via cli), + * so that other driver are not impacted, and it look like it's + * possible, but it's very tricky to do right (full of races). As + * the gain would be mostly for SMP systems, it can wait... + * + * Debugging and options + * --------------------- + * You will find below a set of '#define" allowing a very fine control + * on the driver behaviour and the debug messages printed. + * The main options are : + * o WAVELAN_ROAMING, for the experimental roaming support. + * o SET_PSA_CRC, to have your card correctly recognised by + * an access point and the Point-to-Point diagnostic tool. + * o USE_PSA_CONFIG, to read configuration from the PSA (EEprom) + * (otherwise we always start afresh with some defaults) + * + * wavelan_cs.o is darn too big + * ------------------------- + * That's true ! There is a very simple way to reduce the driver + * object by 33% (yes !). Comment out the following line : + * #include <linux/wireless.h> + * Other compile options can also reduce the size of it... + * + * MAC address and hardware detection : + * ---------------------------------- + * The detection code of the wavelan chech that the first 3 + * octets of the MAC address fit the company code. This type of + * detection work well for AT&T cards (because the AT&T code is + * hardcoded in wavelan_cs.h), but of course will fail for other + * manufacturer. + * + * If you are sure that your card is derived from the wavelan, + * here is the way to configure it : + * 1) Get your MAC address + * a) With your card utilities (wfreqsel, instconf, ...) + * b) With the driver : + * o compile the kernel with DEBUG_CONFIG_INFO enabled + * o Boot and look the card messages + * 2) Set your MAC code (3 octets) in MAC_ADDRESSES[][3] (wavelan_cs.h) + * 3) Compile & verify + * 4) Send me the MAC code - I will include it in the next version... + * + */ + +/* --------------------- WIRELESS EXTENSIONS --------------------- */ +/* + * This driver is the first one to support "wireless extensions". + * This set of extensions provide you some way to control the wireless + * caracteristics of the hardware in a standard way and support for + * applications for taking advantage of it (like Mobile IP). + * + * It might be a good idea as well to fetch the wireless tools to + * configure the device and play a bit. + */ + +/* ---------------------------- FILES ---------------------------- */ +/* + * wavelan_cs.c : The actual code for the driver - C functions + * + * wavelan_cs.p.h : Private header : local types / vars for the driver + * + * wavelan_cs.h : Description of the hardware interface & structs + * + * i82593.h : Description if the Ethernet controller + */ + +/* --------------------------- HISTORY --------------------------- */ +/* + * The history of the Wavelan drivers is as complicated as history of + * the Wavelan itself (NCR -> AT&T -> Lucent). + * + * All started with Anders Klemets <klemets@paul.rutgers.edu>, + * writing a Wavelan ISA driver for the MACH microkernel. Girish + * Welling <welling@paul.rutgers.edu> had also worked on it. + * Keith Moore modify this for the Pcmcia hardware. + * + * Robert Morris <rtm@das.harvard.edu> port these two drivers to BSDI + * and add specific Pcmcia support (there is currently no equivalent + * of the PCMCIA package under BSD...). + * + * Jim Binkley <jrb@cs.pdx.edu> port both BSDI drivers to FreeBSD. + * + * Bruce Janson <bruce@cs.usyd.edu.au> port the BSDI ISA driver to Linux. + * + * Anthony D. Joseph <adj@lcs.mit.edu> started modify Bruce driver + * (with help of the BSDI PCMCIA driver) for PCMCIA. + * Yunzhou Li <yunzhou@strat.iol.unh.edu> finished is work. + * Joe Finney <joe@comp.lancs.ac.uk> patched the driver to start + * correctly 2.00 cards (2.4 GHz with frequency selection). + * David Hinds <dahinds@users.sourceforge.net> integrated the whole in his + * Pcmcia package (+ bug corrections). + * + * I (Jean Tourrilhes - jt@hplb.hpl.hp.com) then started to make some + * patchs to the Pcmcia driver. After, I added code in the ISA driver + * for Wireless Extensions and full support of frequency selection + * cards. Now, I'm doing the same to the Pcmcia driver + some + * reorganisation. + * Loeke Brederveld <lbrederv@wavelan.com> from Lucent has given me + * much needed informations on the Wavelan hardware. + */ + +/* By the way : for the copyright & legal stuff : + * Almost everybody wrote code under GNU or BSD license (or alike), + * and want that their original copyright remain somewhere in the + * code (for myself, I go with the GPL). + * Nobody want to take responsibility for anything, except the fame... + */ + +/* --------------------------- CREDITS --------------------------- */ +/* + * Credits: + * Special thanks to Jan Hoogendoorn of AT&T GIS Utrecht and + * Loeke Brederveld of Lucent for providing extremely useful + * information about WaveLAN PCMCIA hardware + * + * This driver is based upon several other drivers, in particular: + * David Hinds' Linux driver for the PCMCIA 3c589 ethernet adapter + * Bruce Janson's Linux driver for the AT-bus WaveLAN adapter + * Anders Klemets' PCMCIA WaveLAN adapter driver + * Robert Morris' BSDI driver for the PCMCIA WaveLAN adapter + * + * Additional Credits: + * + * This software was originally developed under Linux 1.2.3 + * (Slackware 2.0 distribution). + * And then under Linux 2.0.x (Debian 1.1 -> 2.2 - pcmcia 2.8.18+) + * with an HP OmniBook 4000 and then a 5500. + * + * It is based on other device drivers and information either written + * or supplied by: + * James Ashton (jaa101@syseng.anu.edu.au), + * Ajay Bakre (bakre@paul.rutgers.edu), + * Donald Becker (becker@super.org), + * Jim Binkley <jrb@cs.pdx.edu>, + * Loeke Brederveld <lbrederv@wavelan.com>, + * Allan Creighton (allanc@cs.su.oz.au), + * Brent Elphick <belphick@uwaterloo.ca>, + * Joe Finney <joe@comp.lancs.ac.uk>, + * Matthew Geier (matthew@cs.su.oz.au), + * Remo di Giovanni (remo@cs.su.oz.au), + * Mark Hagan (mhagan@wtcpost.daytonoh.NCR.COM), + * David Hinds <dahinds@users.sourceforge.net>, + * Jan Hoogendoorn (c/o marteijn@lucent.com), + * Bruce Janson <bruce@cs.usyd.edu.au>, + * Anthony D. Joseph <adj@lcs.mit.edu>, + * Anders Klemets (klemets@paul.rutgers.edu), + * Yunzhou Li <yunzhou@strat.iol.unh.edu>, + * Marc Meertens (mmeertens@lucent.com), + * Keith Moore, + * Robert Morris (rtm@das.harvard.edu), + * Ian Parkin (ian@cs.su.oz.au), + * John Rosenberg (johnr@cs.su.oz.au), + * George Rossi (george@phm.gov.au), + * Arthur Scott (arthur@cs.su.oz.au), + * Stanislav Sinyagin <stas@isf.ru> + * Peter Storey, + * Jean Tourrilhes <jt@hpl.hp.com>, + * Girish Welling (welling@paul.rutgers.edu) + * Clark Woodworth <clark@hiway1.exit109.com> + * Yongguang Zhang <ygz@isl.hrl.hac.com>... + */ + +/* ------------------------- IMPROVEMENTS ------------------------- */ +/* + * I proudly present : + * + * Changes made in 2.8.22 : + * ---------------------- + * - improved wv_set_multicast_list + * - catch spurious interrupt + * - correct release of the device + * + * Changes mades in release : + * ------------------------ + * - Reorganisation of the code, function name change + * - Creation of private header (wavelan_cs.h) + * - Reorganised debug messages + * - More comments, history, ... + * - Configure earlier (in "insert" instead of "open") + * and do things only once + * - mmc_init : configure the PSA if not done + * - mmc_init : 2.00 detection better code for 2.00 init + * - better info at startup + * - Correct a HUGE bug (volatile & uncalibrated busy loop) + * in wv_82593_cmd => config speedup + * - Stop receiving & power down on close (and power up on open) + * use "ifconfig down" & "ifconfig up ; route add -net ..." + * - Send packets : add watchdog instead of pooling + * - Receive : check frame wrap around & try to recover some frames + * - wavelan_set_multicast_list : avoid reset + * - add wireless extensions (ioctl & get_wireless_stats) + * get/set nwid/frequency on fly, info for /proc/net/wireless + * - Suppress useless stuff from lp (net_local), but add link + * - More inlines + * - Lot of others minor details & cleanups + * + * Changes made in second release : + * ------------------------------ + * - Optimise wv_85893_reconfig stuff, fix potential problems + * - Change error values for ioctl + * - Non blocking wv_ru_stop() + call wv_reset() in case of problems + * - Remove development printk from wavelan_watchdog() + * - Remove of the watchdog to wavelan_close instead of wavelan_release + * fix potential problems... + * - Start debugging suspend stuff (but it's still a bit weird) + * - Debug & optimize dump header/packet in Rx & Tx (debug) + * - Use "readb" and "writeb" to be kernel 2.1 compliant + * - Better handling of bogus interrupts + * - Wireless extension : SETSPY and GETSPY + * - Remove old stuff (stats - for those needing it, just ask me...) + * - Make wireless extensions optional + * + * Changes made in third release : + * ----------------------------- + * - cleanups & typos + * - modif wireless ext (spy -> only one pointer) + * - new private ioctl to set/get quality & level threshold + * - Init : correct default value of level threshold for pcmcia + * - kill watchdog in hw_reset + * - more 2.1 support (copy_to/from_user instead of memcpy_to/fromfs) + * - Add message level (debug stuff in /var/adm/debug & errors not + * displayed at console and still in /var/adm/messages) + * + * Changes made in fourth release : + * ------------------------------ + * - multicast support (yes !) thanks to Yongguang Zhang. + * + * Changes made in fifth release (2.9.0) : + * ------------------------------------- + * - Revisited multicast code (it was mostly wrong). + * - protect code in wv_82593_reconfig with dev->tbusy (oups !) + * + * Changes made in sixth release (2.9.1a) : + * -------------------------------------- + * - Change the detection code for multi manufacturer code support + * - Correct bug (hang kernel) in init when we were "rejecting" a card + * + * Changes made in seventh release (2.9.1b) : + * ---------------------------------------- + * - Update to wireless extensions changes + * - Silly bug in card initial configuration (psa_conf_status) + * + * Changes made in eigth release : + * ----------------------------- + * - Small bug in debug code (probably not the last one...) + * - 1.2.13 support (thanks to Clark Woodworth) + * + * Changes made for release in 2.9.2b : + * ---------------------------------- + * - Level threshold is now a standard wireless extension (version 4 !) + * - modules parameters types for kernel > 2.1.17 + * - updated man page + * - Others cleanup from David Hinds + * + * Changes made for release in 2.9.5 : + * --------------------------------- + * - byte count stats (courtesy of David Hinds) + * - Remove dev_tint stuff (courtesy of David Hinds) + * - Others cleanup from David Hinds + * - Encryption setting from Brent Elphick (thanks a lot !) + * - 'base' to 'u_long' for the Alpha (thanks to Stanislav Sinyagin) + * + * Changes made for release in 2.9.6 : + * --------------------------------- + * - fix bug : no longuer disable watchdog in case of bogus interrupt + * - increase timeout in config code for picky hardware + * - mask unused bits in status (Wireless Extensions) + * + * Changes integrated by Justin Seger <jseger@MIT.EDU> & David Hinds : + * ----------------------------------------------------------------- + * - Roaming "hack" from Joe Finney <joe@comp.lancs.ac.uk> + * - PSA CRC code from Bob Gray <rgray@bald.cs.dartmouth.edu> + * - Better initialisation of the i82593 controller + * from Joseph K. O'Sullivan <josullvn+@cs.cmu.edu> + * + * Changes made for release in 3.0.10 : + * ---------------------------------- + * - Fix eject "hang" of the driver under 2.2.X : + * o create wv_flush_stale_links() + * o Rename wavelan_release to wv_pcmcia_release & move up + * o move unregister_netdev to wavelan_detach() + * o wavelan_release() no longer call wavelan_detach() + * o Suppress "release" timer + * o Other cleanups & fixes + * - New MAC address in the probe + * - Reorg PSA_CRC code (endian neutral & cleaner) + * - Correct initialisation of the i82593 from Lucent manual + * - Put back the watchdog, with larger timeout + * - TRANSMIT_NO_CRC is a "normal" error, so recover from it + * from Derrick J Brashear <shadow@dementia.org> + * - Better handling of TX and RX normal failure conditions + * - #ifdef out all the roaming code + * - Add ESSID & "AP current address" ioctl stubs + * - General cleanup of the code + * + * Changes made for release in 3.0.13 : + * ---------------------------------- + * - Re-enable compilation of roaming code by default, but with + * do_roaming = 0 + * - Nuke `nwid=nwid^ntohs(beacon->domain_id)' in wl_roam_gather + * at the demand of John Carol Langford <jcl@gs176.sp.cs.cmu.edu> + * - Introduced WAVELAN_ROAMING_EXT for incomplete ESSID stuff. + * + * Changes made for release in 3.0.15 : + * ---------------------------------- + * - Change e-mail and web page addresses + * - Watchdog timer is now correctly expressed in HZ, not in jiffies + * - Add channel number to the list of frequencies in range + * - Add the (short) list of bit-rates in range + * - Developp a new sensitivity... (sens.value & sens.fixed) + * + * Changes made for release in 3.1.2 : + * --------------------------------- + * - Fix check for root permission (break instead of exit) + * - New nwid & encoding setting (Wireless Extension 9) + * + * Changes made for release in 3.1.12 : + * ---------------------------------- + * - reworked wv_82593_cmd to avoid using the IRQ handler and doing + * ugly things with interrupts. + * - Add IRQ protection in 82593_config/ru_start/ru_stop/watchdog + * - Update to new network API (softnet - 2.3.43) : + * o replace dev->tbusy (David + me) + * o replace dev->tstart (David + me) + * o remove dev->interrupt (David) + * o add SMP locking via spinlock in splxx (me) + * o add spinlock in interrupt handler (me) + * o use kernel watchdog instead of ours (me) + * o verify that all the changes make sense and work (me) + * - Re-sync kernel/pcmcia versions (not much actually) + * - A few other cleanups (David & me)... + * + * Changes made for release in 3.1.22 : + * ---------------------------------- + * - Check that SMP works, remove annoying log message + * + * Changes made for release in 3.1.24 : + * ---------------------------------- + * - Fix unfrequent card lockup when watchdog was reseting the hardware : + * o control first busy loop in wv_82593_cmd() + * o Extend spinlock protection in wv_hw_config() + * + * Changes made for release in 3.1.33 : + * ---------------------------------- + * - Optional use new driver API for Wireless Extensions : + * o got rid of wavelan_ioctl() + * o use a bunch of iw_handler instead + * + * Changes made for release in 3.2.1 : + * --------------------------------- + * - Set dev->trans_start to avoid filling the logs + * (and generating useless abort commands) + * - Avoid deadlocks in mmc_out()/mmc_in() + * + * Wishes & dreams: + * ---------------- + * - Cleanup and integrate the roaming code + * (std debug, set DomainID, decay avg and co...) + */ + +/***************************** INCLUDES *****************************/ + +/* Linux headers that we need */ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/sched.h> +#include <linux/ptrace.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/interrupt.h> +#include <linux/spinlock.h> +#include <linux/in.h> +#include <linux/delay.h> +#include <linux/bitops.h> +#include <asm/uaccess.h> +#include <asm/io.h> +#include <asm/system.h> + +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/if_arp.h> +#include <linux/ioport.h> +#include <linux/fcntl.h> +#include <linux/ethtool.h> +#include <linux/wireless.h> /* Wireless extensions */ +#include <net/iw_handler.h> /* New driver API */ + +/* Pcmcia headers that we need */ +#include <pcmcia/cs_types.h> +#include <pcmcia/cs.h> +#include <pcmcia/cistpl.h> +#include <pcmcia/cisreg.h> +#include <pcmcia/ds.h> + +/* Wavelan declarations */ +#include <linux/i82593.h> /* Definitions for the Intel chip */ + +#include "wavelan_cs.h" /* Others bits of the hardware */ + +/************************** DRIVER OPTIONS **************************/ +/* + * `#define' or `#undef' the following constant to change the behaviour + * of the driver... + */ +#define WAVELAN_ROAMING /* Include experimental roaming code */ +#undef WAVELAN_ROAMING_EXT /* Enable roaming wireless extensions */ +#undef SET_PSA_CRC /* Set the CRC in PSA (slower) */ +#define USE_PSA_CONFIG /* Use info from the PSA */ +#undef EEPROM_IS_PROTECTED /* Doesn't seem to be necessary */ +#define MULTICAST_AVOID /* Avoid extra multicast (I'm sceptical) */ +#undef SET_MAC_ADDRESS /* Experimental */ + +/* Warning : these stuff will slow down the driver... */ +#define WIRELESS_SPY /* Enable spying addresses */ +#undef HISTOGRAM /* Enable histogram of sig level... */ + +/****************************** DEBUG ******************************/ + +#undef DEBUG_MODULE_TRACE /* Module insertion/removal */ +#undef DEBUG_CALLBACK_TRACE /* Calls made by Linux */ +#undef DEBUG_INTERRUPT_TRACE /* Calls to handler */ +#undef DEBUG_INTERRUPT_INFO /* type of interrupt & so on */ +#define DEBUG_INTERRUPT_ERROR /* problems */ +#undef DEBUG_CONFIG_TRACE /* Trace the config functions */ +#undef DEBUG_CONFIG_INFO /* What's going on... */ +#define DEBUG_CONFIG_ERRORS /* Errors on configuration */ +#undef DEBUG_TX_TRACE /* Transmission calls */ +#undef DEBUG_TX_INFO /* Header of the transmitted packet */ +#undef DEBUG_TX_FAIL /* Normal failure conditions */ +#define DEBUG_TX_ERROR /* Unexpected conditions */ +#undef DEBUG_RX_TRACE /* Transmission calls */ +#undef DEBUG_RX_INFO /* Header of the transmitted packet */ +#undef DEBUG_RX_FAIL /* Normal failure conditions */ +#define DEBUG_RX_ERROR /* Unexpected conditions */ +#undef DEBUG_PACKET_DUMP /* Dump packet on the screen */ +#undef DEBUG_IOCTL_TRACE /* Misc call by Linux */ +#undef DEBUG_IOCTL_INFO /* Various debug info */ +#define DEBUG_IOCTL_ERROR /* What's going wrong */ +#define DEBUG_BASIC_SHOW /* Show basic startup info */ +#undef DEBUG_VERSION_SHOW /* Print version info */ +#undef DEBUG_PSA_SHOW /* Dump psa to screen */ +#undef DEBUG_MMC_SHOW /* Dump mmc to screen */ +#undef DEBUG_SHOW_UNUSED /* Show also unused fields */ +#undef DEBUG_I82593_SHOW /* Show i82593 status */ +#undef DEBUG_DEVICE_SHOW /* Show device parameters */ + +/************************ CONSTANTS & MACROS ************************/ + +#ifdef DEBUG_VERSION_SHOW +static const char *version = "wavelan_cs.c : v24 (SMP + wireless extensions) 11/1/02\n"; +#endif + +/* Watchdog temporisation */ +#define WATCHDOG_JIFFIES (256*HZ/100) + +/* Fix a bug in some old wireless extension definitions */ +#ifndef IW_ESSID_MAX_SIZE +#define IW_ESSID_MAX_SIZE 32 +#endif + +/* ------------------------ PRIVATE IOCTL ------------------------ */ + +#define SIOCSIPQTHR SIOCIWFIRSTPRIV /* Set quality threshold */ +#define SIOCGIPQTHR SIOCIWFIRSTPRIV + 1 /* Get quality threshold */ +#define SIOCSIPROAM SIOCIWFIRSTPRIV + 2 /* Set roaming state */ +#define SIOCGIPROAM SIOCIWFIRSTPRIV + 3 /* Get roaming state */ + +#define SIOCSIPHISTO SIOCIWFIRSTPRIV + 4 /* Set histogram ranges */ +#define SIOCGIPHISTO SIOCIWFIRSTPRIV + 5 /* Get histogram values */ + +/*************************** WaveLAN Roaming **************************/ +#ifdef WAVELAN_ROAMING /* Conditional compile, see above in options */ + +#define WAVELAN_ROAMING_DEBUG 0 /* 1 = Trace of handover decisions */ + /* 2 = Info on each beacon rcvd... */ +#define MAX_WAVEPOINTS 7 /* Max visible at one time */ +#define WAVEPOINT_HISTORY 5 /* SNR sample history slow search */ +#define WAVEPOINT_FAST_HISTORY 2 /* SNR sample history fast search */ +#define SEARCH_THRESH_LOW 10 /* SNR to enter cell search */ +#define SEARCH_THRESH_HIGH 13 /* SNR to leave cell search */ +#define WAVELAN_ROAMING_DELTA 1 /* Hysteresis value (+/- SNR) */ +#define CELL_TIMEOUT 2*HZ /* in jiffies */ + +#define FAST_CELL_SEARCH 1 /* Boolean values... */ +#define NWID_PROMISC 1 /* for code clarity. */ + +typedef struct wavepoint_beacon +{ + unsigned char dsap, /* Unused */ + ssap, /* Unused */ + ctrl, /* Unused */ + O,U,I, /* Unused */ + spec_id1, /* Unused */ + spec_id2, /* Unused */ + pdu_type, /* Unused */ + seq; /* WavePoint beacon sequence number */ + __be16 domain_id, /* WavePoint Domain ID */ + nwid; /* WavePoint NWID */ +} wavepoint_beacon; + +typedef struct wavepoint_history +{ + unsigned short nwid; /* WavePoint's NWID */ + int average_slow; /* SNR running average */ + int average_fast; /* SNR running average */ + unsigned char sigqual[WAVEPOINT_HISTORY]; /* Ringbuffer of recent SNR's */ + unsigned char qualptr; /* Index into ringbuffer */ + unsigned char last_seq; /* Last seq. no seen for WavePoint */ + struct wavepoint_history *next; /* Next WavePoint in table */ + struct wavepoint_history *prev; /* Previous WavePoint in table */ + unsigned long last_seen; /* Time of last beacon recvd, jiffies */ +} wavepoint_history; + +struct wavepoint_table +{ + wavepoint_history *head; /* Start of ringbuffer */ + int num_wavepoints; /* No. of WavePoints visible */ + unsigned char locked; /* Table lock */ +}; + +#endif /* WAVELAN_ROAMING */ + +/****************************** TYPES ******************************/ + +/* Shortcuts */ +typedef struct iw_statistics iw_stats; +typedef struct iw_quality iw_qual; +typedef struct iw_freq iw_freq; +typedef struct net_local net_local; +typedef struct timer_list timer_list; + +/* Basic types */ +typedef u_char mac_addr[WAVELAN_ADDR_SIZE]; /* Hardware address */ + +/* + * Static specific data for the interface. + * + * For each network interface, Linux keep data in two structure. "device" + * keep the generic data (same format for everybody) and "net_local" keep + * the additional specific data. + */ +struct net_local +{ + dev_node_t node; /* ???? What is this stuff ???? */ + struct net_device * dev; /* Reverse link... */ + spinlock_t spinlock; /* Serialize access to the hardware (SMP) */ + struct pcmcia_device * link; /* pcmcia structure */ + int nresets; /* Number of hw resets */ + u_char configured; /* If it is configured */ + u_char reconfig_82593; /* Need to reconfigure the controller */ + u_char promiscuous; /* Promiscuous mode */ + u_char allmulticast; /* All Multicast mode */ + int mc_count; /* Number of multicast addresses */ + + int stop; /* Current i82593 Stop Hit Register */ + int rfp; /* Last DMA machine receive pointer */ + int overrunning; /* Receiver overrun flag */ + + iw_stats wstats; /* Wireless specific stats */ + + struct iw_spy_data spy_data; + struct iw_public_data wireless_data; + +#ifdef HISTOGRAM + int his_number; /* Number of intervals */ + u_char his_range[16]; /* Boundaries of interval ]n-1; n] */ + u_long his_sum[16]; /* Sum in interval */ +#endif /* HISTOGRAM */ +#ifdef WAVELAN_ROAMING + u_long domain_id; /* Domain ID we lock on for roaming */ + int filter_domains; /* Check Domain ID of beacon found */ + struct wavepoint_table wavepoint_table; /* Table of visible WavePoints*/ + wavepoint_history * curr_point; /* Current wavepoint */ + int cell_search; /* Searching for new cell? */ + struct timer_list cell_timer; /* Garbage collection */ +#endif /* WAVELAN_ROAMING */ + void __iomem *mem; +}; + +/* ----------------- MODEM MANAGEMENT SUBROUTINES ----------------- */ +static inline u_char /* data */ + hasr_read(u_long); /* Read the host interface : base address */ +static void + hacr_write(u_long, /* Write to host interface : base address */ + u_char), /* data */ + hacr_write_slow(u_long, + u_char); +static void + psa_read(struct net_device *, /* Read the Parameter Storage Area */ + int, /* offset in PSA */ + u_char *, /* buffer to fill */ + int), /* size to read */ + psa_write(struct net_device *, /* Write to the PSA */ + int, /* Offset in psa */ + u_char *, /* Buffer in memory */ + int); /* Length of buffer */ +static void + mmc_out(u_long, /* Write 1 byte to the Modem Manag Control */ + u_short, + u_char), + mmc_write(u_long, /* Write n bytes to the MMC */ + u_char, + u_char *, + int); +static u_char /* Read 1 byte from the MMC */ + mmc_in(u_long, + u_short); +static void + mmc_read(u_long, /* Read n bytes from the MMC */ + u_char, + u_char *, + int), + fee_wait(u_long, /* Wait for frequency EEprom : base address */ + int, /* Base delay to wait for */ + int); /* Number of time to wait */ +static void + fee_read(u_long, /* Read the frequency EEprom : base address */ + u_short, /* destination offset */ + u_short *, /* data buffer */ + int); /* number of registers */ +/* ---------------------- I82593 SUBROUTINES ----------------------- */ +static int + wv_82593_cmd(struct net_device *, /* synchronously send a command to i82593 */ + char *, + int, + int); +static inline int + wv_diag(struct net_device *); /* Diagnostique the i82593 */ +static int + read_ringbuf(struct net_device *, /* Read a receive buffer */ + int, + char *, + int); +static void + wv_82593_reconfig(struct net_device *); /* Reconfigure the controller */ +/* ------------------- DEBUG & INFO SUBROUTINES ------------------- */ +static void + wv_init_info(struct net_device *); /* display startup info */ +/* ------------------- IOCTL, STATS & RECONFIG ------------------- */ +static iw_stats * + wavelan_get_wireless_stats(struct net_device *); +/* ----------------------- PACKET RECEPTION ----------------------- */ +static int + wv_start_of_frame(struct net_device *, /* Seek beggining of current frame */ + int, /* end of frame */ + int); /* start of buffer */ +static void + wv_packet_read(struct net_device *, /* Read a packet from a frame */ + int, + int), + wv_packet_rcv(struct net_device *); /* Read all packets waiting */ +/* --------------------- PACKET TRANSMISSION --------------------- */ +static void + wv_packet_write(struct net_device *, /* Write a packet to the Tx buffer */ + void *, + short); +static netdev_tx_t + wavelan_packet_xmit(struct sk_buff *, /* Send a packet */ + struct net_device *); +/* -------------------- HARDWARE CONFIGURATION -------------------- */ +static int + wv_mmc_init(struct net_device *); /* Initialize the modem */ +static int + wv_ru_stop(struct net_device *), /* Stop the i82593 receiver unit */ + wv_ru_start(struct net_device *); /* Start the i82593 receiver unit */ +static int + wv_82593_config(struct net_device *); /* Configure the i82593 */ +static int + wv_pcmcia_reset(struct net_device *); /* Reset the pcmcia interface */ +static int + wv_hw_config(struct net_device *); /* Reset & configure the whole hardware */ +static void + wv_hw_reset(struct net_device *); /* Same, + start receiver unit */ +static int + wv_pcmcia_config(struct pcmcia_device *); /* Configure the pcmcia interface */ +static void + wv_pcmcia_release(struct pcmcia_device *);/* Remove a device */ +/* ---------------------- INTERRUPT HANDLING ---------------------- */ +static irqreturn_t + wavelan_interrupt(int, /* Interrupt handler */ + void *); +static void + wavelan_watchdog(struct net_device *); /* Transmission watchdog */ +/* ------------------- CONFIGURATION CALLBACKS ------------------- */ +static int + wavelan_open(struct net_device *), /* Open the device */ + wavelan_close(struct net_device *); /* Close the device */ +static void + wavelan_detach(struct pcmcia_device *p_dev); /* Destroy a removed device */ + +/**************************** VARIABLES ****************************/ + +/* + * Parameters that can be set with 'insmod' + * The exact syntax is 'insmod wavelan_cs.o <var>=<value>' + */ + +/* Shared memory speed, in ns */ +static int mem_speed = 0; + +/* New module interface */ +module_param(mem_speed, int, 0); + +#ifdef WAVELAN_ROAMING /* Conditional compile, see above in options */ +/* Enable roaming mode ? No ! Please keep this to 0 */ +static int do_roaming = 0; +module_param(do_roaming, bool, 0); +#endif /* WAVELAN_ROAMING */ + +MODULE_LICENSE("GPL"); + +#endif /* WAVELAN_CS_P_H */ + |