diff options
Diffstat (limited to 'drivers/staging/netwave/netwave_cs.c')
| -rw-r--r-- | drivers/staging/netwave/netwave_cs.c | 1370 |
1 files changed, 1370 insertions, 0 deletions
diff --git a/drivers/staging/netwave/netwave_cs.c b/drivers/staging/netwave/netwave_cs.c new file mode 100644 index 000000000000..e61e6b9440ab --- /dev/null +++ b/drivers/staging/netwave/netwave_cs.c @@ -0,0 +1,1370 @@ +/********************************************************************* + * + * Filename: netwave_cs.c + * Version: 0.4.1 + * Description: Netwave AirSurfer Wireless LAN PC Card driver + * Status: Experimental. + * Authors: John Markus Bjørndalen <johnm@cs.uit.no> + * Dag Brattli <dagb@cs.uit.no> + * David Hinds <dahinds@users.sourceforge.net> + * Created at: A long time ago! + * Modified at: Mon Nov 10 11:54:37 1997 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1997 University of Tromsø, Norway + * + * Revision History: + * + * 08-Nov-97 15:14:47 John Markus Bjørndalen <johnm@cs.uit.no> + * - Fixed some bugs in netwave_rx and cleaned it up a bit. + * (One of the bugs would have destroyed packets when receiving + * multiple packets per interrupt). + * - Cleaned up parts of newave_hw_xmit. + * - A few general cleanups. + * 24-Oct-97 13:17:36 Dag Brattli <dagb@cs.uit.no> + * - Fixed netwave_rx receive function (got updated docs) + * Others: + * - Changed name from xircnw to netwave, take a look at + * http://www.netwave-wireless.com + * - Some reorganizing of the code + * - Removed possible race condition between interrupt handler and transmit + * function + * - Started to add wireless extensions, but still needs some coding + * - Added watchdog for better handling of transmission timeouts + * (hopefully this works better) + ********************************************************************/ + +/* To have statistics (just packets sent) define this */ +#undef NETWAVE_STATS + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/fcntl.h> +#include <linux/interrupt.h> +#include <linux/ptrace.h> +#include <linux/ioport.h> +#include <linux/in.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/errno.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/bitops.h> +#include <linux/wireless.h> +#include <net/iw_handler.h> + +#include <pcmcia/cs_types.h> +#include <pcmcia/cs.h> +#include <pcmcia/cistpl.h> +#include <pcmcia/cisreg.h> +#include <pcmcia/ds.h> +#include <pcmcia/mem_op.h> + +#include <asm/system.h> +#include <asm/io.h> +#include <asm/dma.h> + +#define NETWAVE_REGOFF 0x8000 +/* The Netwave IO registers, offsets to iobase */ +#define NETWAVE_REG_COR 0x0 +#define NETWAVE_REG_CCSR 0x2 +#define NETWAVE_REG_ASR 0x4 +#define NETWAVE_REG_IMR 0xa +#define NETWAVE_REG_PMR 0xc +#define NETWAVE_REG_IOLOW 0x6 +#define NETWAVE_REG_IOHI 0x7 +#define NETWAVE_REG_IOCONTROL 0x8 +#define NETWAVE_REG_DATA 0xf +/* The Netwave Extended IO registers, offsets to RamBase */ +#define NETWAVE_EREG_ASCC 0x114 +#define NETWAVE_EREG_RSER 0x120 +#define NETWAVE_EREG_RSERW 0x124 +#define NETWAVE_EREG_TSER 0x130 +#define NETWAVE_EREG_TSERW 0x134 +#define NETWAVE_EREG_CB 0x100 +#define NETWAVE_EREG_SPCQ 0x154 +#define NETWAVE_EREG_SPU 0x155 +#define NETWAVE_EREG_LIF 0x14e +#define NETWAVE_EREG_ISPLQ 0x156 +#define NETWAVE_EREG_HHC 0x158 +#define NETWAVE_EREG_NI 0x16e +#define NETWAVE_EREG_MHS 0x16b +#define NETWAVE_EREG_TDP 0x140 +#define NETWAVE_EREG_RDP 0x150 +#define NETWAVE_EREG_PA 0x160 +#define NETWAVE_EREG_EC 0x180 +#define NETWAVE_EREG_CRBP 0x17a +#define NETWAVE_EREG_ARW 0x166 + +/* + * Commands used in the extended command buffer + * NETWAVE_EREG_CB (0x100-0x10F) + */ +#define NETWAVE_CMD_NOP 0x00 +#define NETWAVE_CMD_SRC 0x01 +#define NETWAVE_CMD_STC 0x02 +#define NETWAVE_CMD_AMA 0x03 +#define NETWAVE_CMD_DMA 0x04 +#define NETWAVE_CMD_SAMA 0x05 +#define NETWAVE_CMD_ER 0x06 +#define NETWAVE_CMD_DR 0x07 +#define NETWAVE_CMD_TL 0x08 +#define NETWAVE_CMD_SRP 0x09 +#define NETWAVE_CMD_SSK 0x0a +#define NETWAVE_CMD_SMD 0x0b +#define NETWAVE_CMD_SAPD 0x0c +#define NETWAVE_CMD_SSS 0x11 +/* End of Command marker */ +#define NETWAVE_CMD_EOC 0x00 + +/* ASR register bits */ +#define NETWAVE_ASR_RXRDY 0x80 +#define NETWAVE_ASR_TXBA 0x01 + +#define TX_TIMEOUT ((32*HZ)/100) + +static const unsigned int imrConfRFU1 = 0x10; /* RFU interrupt mask, keep high */ +static const unsigned int imrConfIENA = 0x02; /* Interrupt enable */ + +static const unsigned int corConfIENA = 0x01; /* Interrupt enable */ +static const unsigned int corConfLVLREQ = 0x40; /* Keep high */ + +static const unsigned int rxConfRxEna = 0x80; /* Receive Enable */ +static const unsigned int rxConfMAC = 0x20; /* MAC host receive mode*/ +static const unsigned int rxConfPro = 0x10; /* Promiscuous */ +static const unsigned int rxConfAMP = 0x08; /* Accept Multicast Packets */ +static const unsigned int rxConfBcast = 0x04; /* Accept Broadcast Packets */ + +static const unsigned int txConfTxEna = 0x80; /* Transmit Enable */ +static const unsigned int txConfMAC = 0x20; /* Host sends MAC mode */ +static const unsigned int txConfEUD = 0x10; /* Enable Uni-Data packets */ +static const unsigned int txConfKey = 0x02; /* Scramble data packets */ +static const unsigned int txConfLoop = 0x01; /* Loopback mode */ + + +/*====================================================================*/ + +/* Parameters that can be set with 'insmod' */ + +/* Choose the domain, default is 0x100 */ +static u_int domain = 0x100; + +/* Scramble key, range from 0x0 to 0xffff. + * 0x0 is no scrambling. + */ +static u_int scramble_key = 0x0; + +/* Shared memory speed, in ns. The documentation states that + * the card should not be read faster than every 400ns. + * This timing should be provided by the HBA. If it becomes a + * problem, try setting mem_speed to 400. + */ +static int mem_speed; + +module_param(domain, int, 0); +module_param(scramble_key, int, 0); +module_param(mem_speed, int, 0); + +/*====================================================================*/ + +/* PCMCIA (Card Services) related functions */ +static void netwave_release(struct pcmcia_device *link); /* Card removal */ +static int netwave_pcmcia_config(struct pcmcia_device *arg); /* Runs after card + insertion */ +static void netwave_detach(struct pcmcia_device *p_dev); /* Destroy instance */ + +/* Hardware configuration */ +static void netwave_doreset(unsigned int iobase, u_char __iomem *ramBase); +static void netwave_reset(struct net_device *dev); + +/* Misc device stuff */ +static int netwave_open(struct net_device *dev); /* Open the device */ +static int netwave_close(struct net_device *dev); /* Close the device */ + +/* Packet transmission and Packet reception */ +static netdev_tx_t netwave_start_xmit( struct sk_buff *skb, + struct net_device *dev); +static int netwave_rx( struct net_device *dev); + +/* Interrupt routines */ +static irqreturn_t netwave_interrupt(int irq, void *dev_id); +static void netwave_watchdog(struct net_device *); + +/* Wireless extensions */ +static struct iw_statistics* netwave_get_wireless_stats(struct net_device *dev); + +static void set_multicast_list(struct net_device *dev); + +/* + A struct pcmcia_device structure has fields for most things that are needed + to keep track of a socket, but there will usually be some device + specific information that also needs to be kept track of. The + 'priv' pointer in a struct pcmcia_device structure can be used to point to + a device-specific private data structure, like this. + + A driver needs to provide a dev_node_t structure for each device + on a card. In some cases, there is only one device per card (for + example, ethernet cards, modems). In other cases, there may be + many actual or logical devices (SCSI adapters, memory cards with + multiple partitions). The dev_node_t structures need to be kept + in a linked list starting at the 'dev' field of a struct pcmcia_device + structure. We allocate them in the card's private data structure, + because they generally can't be allocated dynamically. +*/ + +static const struct iw_handler_def netwave_handler_def; + +#define SIOCGIPSNAP SIOCIWFIRSTPRIV + 1 /* Site Survey Snapshot */ + +#define MAX_ESA 10 + +typedef struct net_addr { + u_char addr48[6]; +} net_addr; + +struct site_survey { + u_short length; + u_char struct_revision; + u_char roaming_state; + + u_char sp_existsFlag; + u_char sp_link_quality; + u_char sp_max_link_quality; + u_char linkQualityGoodFairBoundary; + u_char linkQualityFairPoorBoundary; + u_char sp_utilization; + u_char sp_goodness; + u_char sp_hotheadcount; + u_char roaming_condition; + + net_addr sp; + u_char numAPs; + net_addr nearByAccessPoints[MAX_ESA]; +}; + +typedef struct netwave_private { + struct pcmcia_device *p_dev; + spinlock_t spinlock; /* Serialize access to the hardware (SMP) */ + dev_node_t node; + u_char __iomem *ramBase; + int timeoutCounter; + int lastExec; + struct timer_list watchdog; /* To avoid blocking state */ + struct site_survey nss; + struct iw_statistics iw_stats; /* Wireless stats */ +} netwave_private; + +/* + * The Netwave card is little-endian, so won't work for big endian + * systems. + */ +static inline unsigned short get_uint16(u_char __iomem *staddr) +{ + return readw(staddr); /* Return only 16 bits */ +} + +static inline short get_int16(u_char __iomem * staddr) +{ + return readw(staddr); +} + +/* + * Wait until the WOC (Write Operation Complete) bit in the + * ASR (Adapter Status Register) is asserted. + * This should have aborted if it takes too long time. + */ +static inline void wait_WOC(unsigned int iobase) +{ + /* Spin lock */ + while ((inb(iobase + NETWAVE_REG_ASR) & 0x8) != 0x8) ; +} + +static void netwave_snapshot(netwave_private *priv, u_char __iomem *ramBase, + unsigned int iobase) { + u_short resultBuffer; + + /* if time since last snapshot is > 1 sec. (100 jiffies?) then take + * new snapshot, else return cached data. This is the recommended rate. + */ + if ( jiffies - priv->lastExec > 100) { + /* Take site survey snapshot */ + /*printk( KERN_DEBUG "Taking new snapshot. %ld\n", jiffies - + priv->lastExec); */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_SSS, ramBase + NETWAVE_EREG_CB + 0); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1); + wait_WOC(iobase); + + /* Get result and copy to cach */ + resultBuffer = readw(ramBase + NETWAVE_EREG_CRBP); + copy_from_pc( &priv->nss, ramBase+resultBuffer, + sizeof(struct site_survey)); + } +} + +/* + * Function netwave_get_wireless_stats (dev) + * + * Wireless extensions statistics + * + */ +static struct iw_statistics *netwave_get_wireless_stats(struct net_device *dev) +{ + unsigned long flags; + unsigned int iobase = dev->base_addr; + netwave_private *priv = netdev_priv(dev); + u_char __iomem *ramBase = priv->ramBase; + struct iw_statistics* wstats; + + wstats = &priv->iw_stats; + + spin_lock_irqsave(&priv->spinlock, flags); + + netwave_snapshot( priv, ramBase, iobase); + + wstats->status = priv->nss.roaming_state; + wstats->qual.qual = readb( ramBase + NETWAVE_EREG_SPCQ); + wstats->qual.level = readb( ramBase + NETWAVE_EREG_ISPLQ); + wstats->qual.noise = readb( ramBase + NETWAVE_EREG_SPU) & 0x3f; + wstats->discard.nwid = 0L; + wstats->discard.code = 0L; + wstats->discard.misc = 0L; + + spin_unlock_irqrestore(&priv->spinlock, flags); + + return &priv->iw_stats; +} + +static const struct net_device_ops netwave_netdev_ops = { + .ndo_open = netwave_open, + .ndo_stop = netwave_close, + .ndo_start_xmit = netwave_start_xmit, + .ndo_set_multicast_list = set_multicast_list, + .ndo_tx_timeout = netwave_watchdog, + .ndo_change_mtu = eth_change_mtu, + .ndo_set_mac_address = eth_mac_addr, + .ndo_validate_addr = eth_validate_addr, +}; + +/* + * Function netwave_attach (void) + * + * Creates an "instance" of the driver, allocating local data + * structures for one device. 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 netwave_probe(struct pcmcia_device *link) +{ + struct net_device *dev; + netwave_private *priv; + + dev_dbg(&link->dev, "netwave_attach()\n"); + + /* Initialize the struct pcmcia_device structure */ + dev = alloc_etherdev(sizeof(netwave_private)); + if (!dev) + return -ENOMEM; + priv = netdev_priv(dev); + priv->p_dev = link; + link->priv = dev; + + /* The io structure describes IO port mapping */ + link->io.NumPorts1 = 16; + link->io.Attributes1 = IO_DATA_PATH_WIDTH_16; + /* link->io.NumPorts2 = 16; + link->io.Attributes2 = IO_DATA_PATH_WIDTH_16; */ + link->io.IOAddrLines = 5; + + /* Interrupt setup */ + link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; + link->irq.Handler = &netwave_interrupt; + + /* General socket configuration */ + link->conf.Attributes = CONF_ENABLE_IRQ; + link->conf.IntType = INT_MEMORY_AND_IO; + link->conf.ConfigIndex = 1; + + /* Netwave private struct init. link/dev/node already taken care of, + * other stuff zero'd - Jean II */ + spin_lock_init(&priv->spinlock); + + /* Netwave specific entries in the device structure */ + dev->netdev_ops = &netwave_netdev_ops; + /* wireless extensions */ + dev->wireless_handlers = &netwave_handler_def; + + dev->watchdog_timeo = TX_TIMEOUT; + + return netwave_pcmcia_config( link); +} /* netwave_attach */ + +/* + * Function netwave_detach (link) + * + * 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 netwave_detach(struct pcmcia_device *link) +{ + struct net_device *dev = link->priv; + + dev_dbg(&link->dev, "netwave_detach\n"); + + netwave_release(link); + + if (link->dev_node) + unregister_netdev(dev); + + free_netdev(dev); +} /* netwave_detach */ + +/* + * Wireless Handler : get protocol name + */ +static int netwave_get_name(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + strcpy(wrqu->name, "Netwave"); + return 0; +} + +/* + * Wireless Handler : set Network ID + */ +static int netwave_set_nwid(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned long flags; + unsigned int iobase = dev->base_addr; + netwave_private *priv = netdev_priv(dev); + u_char __iomem *ramBase = priv->ramBase; + + /* Disable interrupts & save flags */ + spin_lock_irqsave(&priv->spinlock, flags); + + if(!wrqu->nwid.disabled) { + domain = wrqu->nwid.value; + printk( KERN_DEBUG "Setting domain to 0x%x%02x\n", + (domain >> 8) & 0x01, domain & 0xff); + wait_WOC(iobase); + writeb(NETWAVE_CMD_SMD, ramBase + NETWAVE_EREG_CB + 0); + writeb( domain & 0xff, ramBase + NETWAVE_EREG_CB + 1); + writeb((domain >>8 ) & 0x01,ramBase + NETWAVE_EREG_CB+2); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); + } + + /* ReEnable interrupts & restore flags */ + spin_unlock_irqrestore(&priv->spinlock, flags); + + return 0; +} + +/* + * Wireless Handler : get Network ID + */ +static int netwave_get_nwid(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + wrqu->nwid.value = domain; + wrqu->nwid.disabled = 0; + wrqu->nwid.fixed = 1; + return 0; +} + +/* + * Wireless Handler : set scramble key + */ +static int netwave_set_scramble(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *key) +{ + unsigned long flags; + unsigned int iobase = dev->base_addr; + netwave_private *priv = netdev_priv(dev); + u_char __iomem *ramBase = priv->ramBase; + + /* Disable interrupts & save flags */ + spin_lock_irqsave(&priv->spinlock, flags); + + scramble_key = (key[0] << 8) | key[1]; + wait_WOC(iobase); + writeb(NETWAVE_CMD_SSK, ramBase + NETWAVE_EREG_CB + 0); + writeb(scramble_key & 0xff, ramBase + NETWAVE_EREG_CB + 1); + writeb((scramble_key>>8) & 0xff, ramBase + NETWAVE_EREG_CB + 2); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); + + /* ReEnable interrupts & restore flags */ + spin_unlock_irqrestore(&priv->spinlock, flags); + + return 0; +} + +/* + * Wireless Handler : get scramble key + */ +static int netwave_get_scramble(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *key) +{ + key[1] = scramble_key & 0xff; + key[0] = (scramble_key>>8) & 0xff; + wrqu->encoding.flags = IW_ENCODE_ENABLED; + wrqu->encoding.length = 2; + return 0; +} + +/* + * Wireless Handler : get mode + */ +static int netwave_get_mode(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + if(domain & 0x100) + wrqu->mode = IW_MODE_INFRA; + else + wrqu->mode = IW_MODE_ADHOC; + + return 0; +} + +/* + * Wireless Handler : get range info + */ +static int netwave_get_range(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + struct iw_range *range = (struct iw_range *) extra; + 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; /* Nothing for us in v10 and v11 */ + + /* Set information in the range struct */ + range->throughput = 450 * 1000; /* don't argue on this ! */ + range->min_nwid = 0x0000; + range->max_nwid = 0x01FF; + + range->num_channels = range->num_frequency = 0; + + range->sensitivity = 0x3F; + range->max_qual.qual = 255; + range->max_qual.level = 255; + range->max_qual.noise = 0; + + range->num_bitrates = 1; + range->bitrate[0] = 1000000; /* 1 Mb/s */ + + range->encoding_size[0] = 2; /* 16 bits scrambling */ + range->num_encoding_sizes = 1; + range->max_encoding_tokens = 1; /* Only one key possible */ + + return ret; +} + +/* + * Wireless Private Handler : get snapshot + */ +static int netwave_get_snap(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *wrqu, + char *extra) +{ + unsigned long flags; + unsigned int iobase = dev->base_addr; + netwave_private *priv = netdev_priv(dev); + u_char __iomem *ramBase = priv->ramBase; + + /* Disable interrupts & save flags */ + spin_lock_irqsave(&priv->spinlock, flags); + + /* Take snapshot of environment */ + netwave_snapshot( priv, ramBase, iobase); + wrqu->data.length = priv->nss.length; + memcpy(extra, (u_char *) &priv->nss, sizeof( struct site_survey)); + + priv->lastExec = jiffies; + + /* ReEnable interrupts & restore flags */ + spin_unlock_irqrestore(&priv->spinlock, flags); + + return(0); +} + +/* + * Structures to export the Wireless Handlers + * This is the stuff that are treated the wireless extensions (iwconfig) + */ + +static const struct iw_priv_args netwave_private_args[] = { +/*{ cmd, set_args, get_args, name } */ + { SIOCGIPSNAP, 0, + IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | sizeof(struct site_survey), + "getsitesurvey" }, +}; + +static const iw_handler netwave_handler[] = +{ + NULL, /* SIOCSIWNAME */ + netwave_get_name, /* SIOCGIWNAME */ + netwave_set_nwid, /* SIOCSIWNWID */ + netwave_get_nwid, /* SIOCGIWNWID */ + NULL, /* SIOCSIWFREQ */ + NULL, /* SIOCGIWFREQ */ + NULL, /* SIOCSIWMODE */ + netwave_get_mode, /* SIOCGIWMODE */ + NULL, /* SIOCSIWSENS */ + NULL, /* SIOCGIWSENS */ + NULL, /* SIOCSIWRANGE */ + netwave_get_range, /* SIOCGIWRANGE */ + NULL, /* SIOCSIWPRIV */ + NULL, /* SIOCGIWPRIV */ + NULL, /* SIOCSIWSTATS */ + NULL, /* SIOCGIWSTATS */ + NULL, /* SIOCSIWSPY */ + NULL, /* SIOCGIWSPY */ + NULL, /* -- hole -- */ + NULL, /* -- hole -- */ + 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 */ + netwave_set_scramble, /* SIOCSIWENCODE */ + netwave_get_scramble, /* SIOCGIWENCODE */ +}; + +static const iw_handler netwave_private_handler[] = +{ + NULL, /* SIOCIWFIRSTPRIV */ + netwave_get_snap, /* SIOCIWFIRSTPRIV + 1 */ +}; + +static const struct iw_handler_def netwave_handler_def = +{ + .num_standard = ARRAY_SIZE(netwave_handler), + .num_private = ARRAY_SIZE(netwave_private_handler), + .num_private_args = ARRAY_SIZE(netwave_private_args), + .standard = (iw_handler *) netwave_handler, + .private = (iw_handler *) netwave_private_handler, + .private_args = (struct iw_priv_args *) netwave_private_args, + .get_wireless_stats = netwave_get_wireless_stats, +}; + +/* + * Function netwave_pcmcia_config (link) + * + * netwave_pcmcia_config() is scheduled to run after a CARD_INSERTION + * event is received, to configure the PCMCIA socket, and to make the + * device available to the system. + * + */ + +static int netwave_pcmcia_config(struct pcmcia_device *link) { + struct net_device *dev = link->priv; + netwave_private *priv = netdev_priv(dev); + int i, j, ret; + win_req_t req; + memreq_t mem; + u_char __iomem *ramBase = NULL; + + dev_dbg(&link->dev, "netwave_pcmcia_config\n"); + + /* + * Try allocating IO ports. This tries a few fixed addresses. + * If you want, you can also read the card's config table to + * pick addresses -- see the serial driver for an example. + */ + for (i = j = 0x0; j < 0x400; j += 0x20) { + link->io.BasePort1 = j ^ 0x300; + i = pcmcia_request_io(link, &link->io); + if (i == 0) + break; + } + if (i != 0) + goto failed; + + /* + * Now allocate an interrupt line. Note that this does not + * actually assign a handler to the interrupt. + */ + ret = pcmcia_request_irq(link, &link->irq); + if (ret) + goto failed; + + /* + * This actually configures the PCMCIA socket -- setting up + * the I/O windows and the interrupt mapping. + */ + ret = pcmcia_request_configuration(link, &link->conf); + if (ret) + goto failed; + + /* + * Allocate a 32K 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, dev->priv. + */ + dev_dbg(&link->dev, "Setting mem speed of %d\n", mem_speed); + + req.Attributes = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_CM|WIN_ENABLE; + req.Base = 0; req.Size = 0x8000; + req.AccessSpeed = mem_speed; + ret = pcmcia_request_window(link, &req, &link->win); + if (ret) + goto failed; + mem.CardOffset = 0x20000; mem.Page = 0; + ret = pcmcia_map_mem_page(link, link->win, &mem); + if (ret) + goto failed; + + /* Store base address of the common window frame */ + ramBase = ioremap(req.Base, 0x8000); + priv->ramBase = ramBase; + + dev->irq = link->irq.AssignedIRQ; + dev->base_addr = link->io.BasePort1; + SET_NETDEV_DEV(dev, &link->dev); + + if (register_netdev(dev) != 0) { + printk(KERN_DEBUG "netwave_cs: register_netdev() failed\n"); + goto failed; + } + + strcpy(priv->node.dev_name, dev->name); + link->dev_node = &priv->node; + + /* Reset card before reading physical address */ + netwave_doreset(dev->base_addr, ramBase); + + /* Read the ethernet address and fill in the Netwave registers. */ + for (i = 0; i < 6; i++) + dev->dev_addr[i] = readb(ramBase + NETWAVE_EREG_PA + i); + + printk(KERN_INFO "%s: Netwave: port %#3lx, irq %d, mem %lx, " + "id %c%c, hw_addr %pM\n", + dev->name, dev->base_addr, dev->irq, + (u_long) ramBase, + (int) readb(ramBase+NETWAVE_EREG_NI), + (int) readb(ramBase+NETWAVE_EREG_NI+1), + dev->dev_addr); + + /* get revision words */ + printk(KERN_DEBUG "Netwave_reset: revision %04x %04x\n", + get_uint16(ramBase + NETWAVE_EREG_ARW), + get_uint16(ramBase + NETWAVE_EREG_ARW+2)); + return 0; + +failed: + netwave_release(link); + return -ENODEV; +} /* netwave_pcmcia_config */ + +/* + * Function netwave_release (arg) + * + * After a card is removed, netwave_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 netwave_release(struct pcmcia_device *link) +{ + struct net_device *dev = link->priv; + netwave_private *priv = netdev_priv(dev); + + dev_dbg(&link->dev, "netwave_release\n"); + + pcmcia_disable_device(link); + if (link->win) + iounmap(priv->ramBase); +} + +static int netwave_suspend(struct pcmcia_device *link) +{ + struct net_device *dev = link->priv; + + if (link->open) + netif_device_detach(dev); + + return 0; +} + +static int netwave_resume(struct pcmcia_device *link) +{ + struct net_device *dev = link->priv; + + if (link->open) { + netwave_reset(dev); + netif_device_attach(dev); + } + + return 0; +} + + +/* + * Function netwave_doreset (ioBase, ramBase) + * + * Proper hardware reset of the card. + */ +static void netwave_doreset(unsigned int ioBase, u_char __iomem *ramBase) +{ + /* Reset card */ + wait_WOC(ioBase); + outb(0x80, ioBase + NETWAVE_REG_PMR); + writeb(0x08, ramBase + NETWAVE_EREG_ASCC); /* Bit 3 is WOC */ + outb(0x0, ioBase + NETWAVE_REG_PMR); /* release reset */ +} + +/* + * Function netwave_reset (dev) + * + * Reset and restore all of the netwave registers + */ +static void netwave_reset(struct net_device *dev) { + /* u_char state; */ + netwave_private *priv = netdev_priv(dev); + u_char __iomem *ramBase = priv->ramBase; + unsigned int iobase = dev->base_addr; + + pr_debug("netwave_reset: Done with hardware reset\n"); + + priv->timeoutCounter = 0; + + /* Reset card */ + netwave_doreset(iobase, ramBase); + printk(KERN_DEBUG "netwave_reset: Done with hardware reset\n"); + + /* Write a NOP to check the card */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_NOP, ramBase + NETWAVE_EREG_CB + 0); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1); + + /* Set receive conf */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_SRC, ramBase + NETWAVE_EREG_CB + 0); + writeb(rxConfRxEna + rxConfBcast, ramBase + NETWAVE_EREG_CB + 1); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 2); + + /* Set transmit conf */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_STC, ramBase + NETWAVE_EREG_CB + 0); + writeb(txConfTxEna, ramBase + NETWAVE_EREG_CB + 1); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 2); + + /* Now set the MU Domain */ + printk(KERN_DEBUG "Setting domain to 0x%x%02x\n", (domain >> 8) & 0x01, domain & 0xff); + wait_WOC(iobase); + writeb(NETWAVE_CMD_SMD, ramBase + NETWAVE_EREG_CB + 0); + writeb(domain & 0xff, ramBase + NETWAVE_EREG_CB + 1); + writeb((domain>>8) & 0x01, ramBase + NETWAVE_EREG_CB + 2); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); + + /* Set scramble key */ + printk(KERN_DEBUG "Setting scramble key to 0x%x\n", scramble_key); + wait_WOC(iobase); + writeb(NETWAVE_CMD_SSK, ramBase + NETWAVE_EREG_CB + 0); + writeb(scramble_key & 0xff, ramBase + NETWAVE_EREG_CB + 1); + writeb((scramble_key>>8) & 0xff, ramBase + NETWAVE_EREG_CB + 2); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); + + /* Enable interrupts, bit 4 high to keep unused + * source from interrupting us, bit 2 high to + * set interrupt enable, 567 to enable TxDN, + * RxErr and RxRdy + */ + wait_WOC(iobase); + outb(imrConfIENA+imrConfRFU1, iobase + NETWAVE_REG_IMR); + + /* Hent 4 bytes fra 0x170. Skal vaere 0a,29,88,36 + * waitWOC + * skriv 80 til d000:3688 + * sjekk om det ble 80 + */ + + /* Enable Receiver */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_ER, ramBase + NETWAVE_EREG_CB + 0); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1); + + /* Set the IENA bit in COR */ + wait_WOC(iobase); + outb(corConfIENA + corConfLVLREQ, iobase + NETWAVE_REG_COR); +} + +/* + * Function netwave_hw_xmit (data, len, dev) + */ +static int netwave_hw_xmit(unsigned char* data, int len, + struct net_device* dev) { + unsigned long flags; + unsigned int TxFreeList, + curBuff, + MaxData, + DataOffset; + int tmpcount; + + netwave_private *priv = netdev_priv(dev); + u_char __iomem * ramBase = priv->ramBase; + unsigned int iobase = dev->base_addr; + + /* Disable interrupts & save flags */ + spin_lock_irqsave(&priv->spinlock, flags); + + /* Check if there are transmit buffers available */ + wait_WOC(iobase); + if ((inb(iobase+NETWAVE_REG_ASR) & NETWAVE_ASR_TXBA) == 0) { + /* No buffers available */ + printk(KERN_DEBUG "netwave_hw_xmit: %s - no xmit buffers available.\n", + dev->name); + spin_unlock_irqrestore(&priv->spinlock, flags); + return 1; + } + + dev->stats.tx_bytes += len; + + pr_debug("Transmitting with SPCQ %x SPU %x LIF %x ISPLQ %x\n", + readb(ramBase + NETWAVE_EREG_SPCQ), + readb(ramBase + NETWAVE_EREG_SPU), + readb(ramBase + NETWAVE_EREG_LIF), + readb(ramBase + NETWAVE_EREG_ISPLQ)); + + /* Now try to insert it into the adapters free memory */ + wait_WOC(iobase); + TxFreeList = get_uint16(ramBase + NETWAVE_EREG_TDP); + MaxData = get_uint16(ramBase + NETWAVE_EREG_TDP+2); + DataOffset = get_uint16(ramBase + NETWAVE_EREG_TDP+4); + + pr_debug("TxFreeList %x, MaxData %x, DataOffset %x\n", + TxFreeList, MaxData, DataOffset); + + /* Copy packet to the adapter fragment buffers */ + curBuff = TxFreeList; + tmpcount = 0; + while (tmpcount < len) { + int tmplen = len - tmpcount; + copy_to_pc(ramBase + curBuff + DataOffset, data + tmpcount, + (tmplen < MaxData) ? tmplen : MaxData); + tmpcount += MaxData; + + /* Advance to next buffer */ + curBuff = get_uint16(ramBase + curBuff); + } + + /* Now issue transmit list */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_TL, ramBase + NETWAVE_EREG_CB + 0); + writeb(len & 0xff, ramBase + NETWAVE_EREG_CB + 1); + writeb((len>>8) & 0xff, ramBase + NETWAVE_EREG_CB + 2); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); + + spin_unlock_irqrestore(&priv->spinlock, flags); + return 0; +} + +static netdev_tx_t netwave_start_xmit(struct sk_buff *skb, + struct net_device *dev) { + /* This flag indicate that the hardware can't perform a transmission. + * Theoritically, NET3 check it before sending a packet to the driver, + * but in fact it never do that and pool continuously. + * As the watchdog will abort too long transmissions, we are quite safe... + */ + + netif_stop_queue(dev); + + { + short length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; + unsigned char* buf = skb->data; + + if (netwave_hw_xmit( buf, length, dev) == 1) { + /* Some error, let's make them call us another time? */ + netif_start_queue(dev); + } + dev->trans_start = jiffies; + } + dev_kfree_skb(skb); + + return NETDEV_TX_OK; +} /* netwave_start_xmit */ + +/* + * Function netwave_interrupt (irq, dev_id) + * + * This function is the interrupt handler for the Netwave 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 netwave_interrupt(int irq, void* dev_id) +{ + unsigned int iobase; + u_char __iomem *ramBase; + struct net_device *dev = (struct net_device *)dev_id; + struct netwave_private *priv = netdev_priv(dev); + struct pcmcia_device *link = priv->p_dev; + int i; + + if (!netif_device_present(dev)) + return IRQ_NONE; + + iobase = dev->base_addr; + ramBase = priv->ramBase; + + /* Now find what caused the interrupt, check while interrupts ready */ + for (i = 0; i < 10; i++) { + u_char status; + + wait_WOC(iobase); + if (!(inb(iobase+NETWAVE_REG_CCSR) & 0x02)) + break; /* None of the interrupt sources asserted (normal exit) */ + + status = inb(iobase + NETWAVE_REG_ASR); + + if (!pcmcia_dev_present(link)) { + pr_debug("netwave_interrupt: Interrupt with status 0x%x " + "from removed or suspended card!\n", status); + break; + } + + /* RxRdy */ + if (status & 0x80) { + netwave_rx(dev); + /* wait_WOC(iobase); */ + /* RxRdy cannot be reset directly by the host */ + } + /* RxErr */ + if (status & 0x40) { + u_char rser; + + rser = readb(ramBase + NETWAVE_EREG_RSER); + + if (rser & 0x04) { + ++dev->stats.rx_dropped; + ++dev->stats.rx_crc_errors; + } + if (rser & 0x02) + ++dev->stats.rx_frame_errors; + + /* Clear the RxErr bit in RSER. RSER+4 is the + * write part. Also clear the RxCRC (0x04) and + * RxBig (0x02) bits if present */ + wait_WOC(iobase); + writeb(0x40 | (rser & 0x06), ramBase + NETWAVE_EREG_RSER + 4); + + /* Write bit 6 high to ASCC to clear RxErr in ASR, + * WOC must be set first! + */ + wait_WOC(iobase); + writeb(0x40, ramBase + NETWAVE_EREG_ASCC); + + /* Remember to count up dev->stats on error packets */ + ++dev->stats.rx_errors; + } + /* TxDN */ + if (status & 0x20) { + int txStatus; + + txStatus = readb(ramBase + NETWAVE_EREG_TSER); + pr_debug("Transmit done. TSER = %x id %x\n", + txStatus, readb(ramBase + NETWAVE_EREG_TSER + 1)); + + if (txStatus & 0x20) { + /* Transmitting was okay, clear bits */ + wait_WOC(iobase); + writeb(0x2f, ramBase + NETWAVE_EREG_TSER + 4); + ++dev->stats.tx_packets; + } + + if (txStatus & 0xd0) { + if (txStatus & 0x80) { + ++dev->stats.collisions; /* Because of /proc/net/dev*/ + /* ++dev->stats.tx_aborted_errors; */ + /* printk("Collision. %ld\n", jiffies - dev->trans_start); */ + } + if (txStatus & 0x40) + ++dev->stats.tx_carrier_errors; + /* 0x80 TxGU Transmit giveup - nine times and no luck + * 0x40 TxNOAP No access point. Discarded packet. + * 0x10 TxErr Transmit error. Always set when + * TxGU and TxNOAP is set. (Those are the only ones + * to set TxErr). + */ + pr_debug("netwave_interrupt: TxDN with error status %x\n", + txStatus); + + /* Clear out TxGU, TxNOAP, TxErr and TxTrys */ + wait_WOC(iobase); + writeb(0xdf & txStatus, ramBase+NETWAVE_EREG_TSER+4); + ++dev->stats.tx_errors; + } + pr_debug("New status is TSER %x ASR %x\n", + readb(ramBase + NETWAVE_EREG_TSER), + inb(iobase + NETWAVE_REG_ASR)); + + netif_wake_queue(dev); + } + /* TxBA, this would trigger on all error packets received */ + /* if (status & 0x01) { + pr_debug("Transmit buffers available, %x\n", status); + } + */ + } + /* Handled if we looped at least one time - Jean II */ + return IRQ_RETVAL(i); +} /* netwave_interrupt */ + +/* + * Function netwave_watchdog (a) + * + * Watchdog : when we start a transmission, we set a timer in the + * kernel. If the transmission complete, this timer is disabled. If + * it expire, we reset the card. + * + */ +static void netwave_watchdog(struct net_device *dev) { + + pr_debug("%s: netwave_watchdog: watchdog timer expired\n", dev->name); + netwave_reset(dev); + dev->trans_start = jiffies; + netif_wake_queue(dev); +} /* netwave_watchdog */ + +static int netwave_rx(struct net_device *dev) +{ + netwave_private *priv = netdev_priv(dev); + u_char __iomem *ramBase = priv->ramBase; + unsigned int iobase = dev->base_addr; + u_char rxStatus; + struct sk_buff *skb = NULL; + unsigned int curBuffer, + rcvList; + int rcvLen; + int tmpcount = 0; + int dataCount, dataOffset; + int i; + u_char *ptr; + + pr_debug("xinw_rx: Receiving ... \n"); + + /* Receive max 10 packets for now. */ + for (i = 0; i < 10; i++) { + /* Any packets? */ + wait_WOC(iobase); + rxStatus = readb(ramBase + NETWAVE_EREG_RSER); + if ( !( rxStatus & 0x80)) /* No more packets */ + break; + + /* Check if multicast/broadcast or other */ + /* multicast = (rxStatus & 0x20); */ + + /* The receive list pointer and length of the packet */ + wait_WOC(iobase); + rcvLen = get_int16( ramBase + NETWAVE_EREG_RDP); + rcvList = get_uint16( ramBase + NETWAVE_EREG_RDP + 2); + + if (rcvLen < 0) { + printk(KERN_DEBUG "netwave_rx: Receive packet with len %d\n", + rcvLen); + return 0; + } + + skb = dev_alloc_skb(rcvLen+5); + if (skb == NULL) { + pr_debug("netwave_rx: Could not allocate an sk_buff of " + "length %d\n", rcvLen); + ++dev->stats.rx_dropped; + /* Tell the adapter to skip the packet */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_SRP, ramBase + NETWAVE_EREG_CB + 0); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1); + return 0; + } + + skb_reserve( skb, 2); /* Align IP on 16 byte */ + skb_put( skb, rcvLen); + + /* Copy packet fragments to the skb data area */ + ptr = (u_char*) skb->data; + curBuffer = rcvList; + tmpcount = 0; + while ( tmpcount < rcvLen) { + /* Get length and offset of current buffer */ + dataCount = get_uint16( ramBase+curBuffer+2); + dataOffset = get_uint16( ramBase+curBuffer+4); + + copy_from_pc( ptr + tmpcount, + ramBase+curBuffer+dataOffset, dataCount); + + tmpcount += dataCount; + + /* Point to next buffer */ + curBuffer = get_uint16(ramBase + curBuffer); + } + + skb->protocol = eth_type_trans(skb,dev); + /* Queue packet for network layer */ + netif_rx(skb); + + dev->stats.rx_packets++; + dev->stats.rx_bytes += rcvLen; + + /* Got the packet, tell the adapter to skip it */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_SRP, ramBase + NETWAVE_EREG_CB + 0); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1); + pr_debug("Packet reception ok\n"); + } + return 0; +} + +static int netwave_open(struct net_device *dev) { + netwave_private *priv = netdev_priv(dev); + struct pcmcia_device *link = priv->p_dev; + + dev_dbg(&link->dev, "netwave_open: starting.\n"); + + if (!pcmcia_dev_present(link)) + return -ENODEV; + + link->open++; + + netif_start_queue(dev); + netwave_reset(dev); + + return 0; +} + +static int netwave_close(struct net_device *dev) { + netwave_private *priv = netdev_priv(dev); + struct pcmcia_device *link = priv->p_dev; + + dev_dbg(&link->dev, "netwave_close: finishing.\n"); + + link->open--; + netif_stop_queue(dev); + + return 0; +} + +static struct pcmcia_device_id netwave_ids[] = { + PCMCIA_DEVICE_PROD_ID12("Xircom", "CreditCard Netwave", 0x2e3ee845, 0x54e28a28), + PCMCIA_DEVICE_NULL, +}; +MODULE_DEVICE_TABLE(pcmcia, netwave_ids); + +static struct pcmcia_driver netwave_driver = { + .owner = THIS_MODULE, + .drv = { + .name = "netwave_cs", + }, + .probe = netwave_probe, + .remove = netwave_detach, + .id_table = netwave_ids, + .suspend = netwave_suspend, + .resume = netwave_resume, +}; + +static int __init init_netwave_cs(void) +{ + return pcmcia_register_driver(&netwave_driver); +} + +static void __exit exit_netwave_cs(void) +{ + pcmcia_unregister_driver(&netwave_driver); +} + +module_init(init_netwave_cs); +module_exit(exit_netwave_cs); + +/* 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 set_multicast_list(struct net_device *dev) +{ + unsigned int iobase = dev->base_addr; + netwave_private *priv = netdev_priv(dev); + u_char __iomem * ramBase = priv->ramBase; + u_char rcvMode = 0; + +#ifdef PCMCIA_DEBUG + { + xstatic int old; + if (old != dev->mc_count) { + old = dev->mc_count; + pr_debug("%s: setting Rx mode to %d addresses.\n", + dev->name, dev->mc_count); + } + } +#endif + + if (dev->mc_count || (dev->flags & IFF_ALLMULTI)) { + /* Multicast Mode */ + rcvMode = rxConfRxEna + rxConfAMP + rxConfBcast; + } else if (dev->flags & IFF_PROMISC) { + /* Promiscous mode */ + rcvMode = rxConfRxEna + rxConfPro + rxConfAMP + rxConfBcast; + } else { + /* Normal mode */ + rcvMode = rxConfRxEna + rxConfBcast; + } + + /* printk("netwave set_multicast_list: rcvMode to %x\n", rcvMode);*/ + /* Now set receive mode */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_SRC, ramBase + NETWAVE_EREG_CB + 0); + writeb(rcvMode, ramBase + NETWAVE_EREG_CB + 1); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 2); +} +MODULE_LICENSE("GPL"); |