diff options
Diffstat (limited to 'drivers/net/ethernet/toshiba/tc35815.c')
| -rw-r--r-- | drivers/net/ethernet/toshiba/tc35815.c | 2228 |
1 files changed, 2228 insertions, 0 deletions
diff --git a/drivers/net/ethernet/toshiba/tc35815.c b/drivers/net/ethernet/toshiba/tc35815.c new file mode 100644 index 000000000000..4a55a162dfe6 --- /dev/null +++ b/drivers/net/ethernet/toshiba/tc35815.c @@ -0,0 +1,2228 @@ +/* + * tc35815.c: A TOSHIBA TC35815CF PCI 10/100Mbps ethernet driver for linux. + * + * Based on skelton.c by Donald Becker. + * + * This driver is a replacement of older and less maintained version. + * This is a header of the older version: + * -----<snip>----- + * Copyright 2001 MontaVista Software Inc. + * Author: MontaVista Software, Inc. + * ahennessy@mvista.com + * Copyright (C) 2000-2001 Toshiba Corporation + * static const char *version = + * "tc35815.c:v0.00 26/07/2000 by Toshiba Corporation\n"; + * -----<snip>----- + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * (C) Copyright TOSHIBA CORPORATION 2004-2005 + * All Rights Reserved. + */ + +#define DRV_VERSION "1.39" +static const char *version = "tc35815.c:v" DRV_VERSION "\n"; +#define MODNAME "tc35815" + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/fcntl.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/in.h> +#include <linux/if_vlan.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/spinlock.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/delay.h> +#include <linux/pci.h> +#include <linux/phy.h> +#include <linux/workqueue.h> +#include <linux/platform_device.h> +#include <linux/prefetch.h> +#include <asm/io.h> +#include <asm/byteorder.h> + +enum tc35815_chiptype { + TC35815CF = 0, + TC35815_NWU, + TC35815_TX4939, +}; + +/* indexed by tc35815_chiptype, above */ +static const struct { + const char *name; +} chip_info[] __devinitdata = { + { "TOSHIBA TC35815CF 10/100BaseTX" }, + { "TOSHIBA TC35815 with Wake on LAN" }, + { "TOSHIBA TC35815/TX4939" }, +}; + +static DEFINE_PCI_DEVICE_TABLE(tc35815_pci_tbl) = { + {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815CF), .driver_data = TC35815CF }, + {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815_NWU), .driver_data = TC35815_NWU }, + {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815_TX4939), .driver_data = TC35815_TX4939 }, + {0,} +}; +MODULE_DEVICE_TABLE(pci, tc35815_pci_tbl); + +/* see MODULE_PARM_DESC */ +static struct tc35815_options { + int speed; + int duplex; +} options; + +/* + * Registers + */ +struct tc35815_regs { + __u32 DMA_Ctl; /* 0x00 */ + __u32 TxFrmPtr; + __u32 TxThrsh; + __u32 TxPollCtr; + __u32 BLFrmPtr; + __u32 RxFragSize; + __u32 Int_En; + __u32 FDA_Bas; + __u32 FDA_Lim; /* 0x20 */ + __u32 Int_Src; + __u32 unused0[2]; + __u32 PauseCnt; + __u32 RemPauCnt; + __u32 TxCtlFrmStat; + __u32 unused1; + __u32 MAC_Ctl; /* 0x40 */ + __u32 CAM_Ctl; + __u32 Tx_Ctl; + __u32 Tx_Stat; + __u32 Rx_Ctl; + __u32 Rx_Stat; + __u32 MD_Data; + __u32 MD_CA; + __u32 CAM_Adr; /* 0x60 */ + __u32 CAM_Data; + __u32 CAM_Ena; + __u32 PROM_Ctl; + __u32 PROM_Data; + __u32 Algn_Cnt; + __u32 CRC_Cnt; + __u32 Miss_Cnt; +}; + +/* + * Bit assignments + */ +/* DMA_Ctl bit assign ------------------------------------------------------- */ +#define DMA_RxAlign 0x00c00000 /* 1:Reception Alignment */ +#define DMA_RxAlign_1 0x00400000 +#define DMA_RxAlign_2 0x00800000 +#define DMA_RxAlign_3 0x00c00000 +#define DMA_M66EnStat 0x00080000 /* 1:66MHz Enable State */ +#define DMA_IntMask 0x00040000 /* 1:Interrupt mask */ +#define DMA_SWIntReq 0x00020000 /* 1:Software Interrupt request */ +#define DMA_TxWakeUp 0x00010000 /* 1:Transmit Wake Up */ +#define DMA_RxBigE 0x00008000 /* 1:Receive Big Endian */ +#define DMA_TxBigE 0x00004000 /* 1:Transmit Big Endian */ +#define DMA_TestMode 0x00002000 /* 1:Test Mode */ +#define DMA_PowrMgmnt 0x00001000 /* 1:Power Management */ +#define DMA_DmBurst_Mask 0x000001fc /* DMA Burst size */ + +/* RxFragSize bit assign ---------------------------------------------------- */ +#define RxFrag_EnPack 0x00008000 /* 1:Enable Packing */ +#define RxFrag_MinFragMask 0x00000ffc /* Minimum Fragment */ + +/* MAC_Ctl bit assign ------------------------------------------------------- */ +#define MAC_Link10 0x00008000 /* 1:Link Status 10Mbits */ +#define MAC_EnMissRoll 0x00002000 /* 1:Enable Missed Roll */ +#define MAC_MissRoll 0x00000400 /* 1:Missed Roll */ +#define MAC_Loop10 0x00000080 /* 1:Loop 10 Mbps */ +#define MAC_Conn_Auto 0x00000000 /*00:Connection mode (Automatic) */ +#define MAC_Conn_10M 0x00000020 /*01: (10Mbps endec)*/ +#define MAC_Conn_Mll 0x00000040 /*10: (Mll clock) */ +#define MAC_MacLoop 0x00000010 /* 1:MAC Loopback */ +#define MAC_FullDup 0x00000008 /* 1:Full Duplex 0:Half Duplex */ +#define MAC_Reset 0x00000004 /* 1:Software Reset */ +#define MAC_HaltImm 0x00000002 /* 1:Halt Immediate */ +#define MAC_HaltReq 0x00000001 /* 1:Halt request */ + +/* PROM_Ctl bit assign ------------------------------------------------------ */ +#define PROM_Busy 0x00008000 /* 1:Busy (Start Operation) */ +#define PROM_Read 0x00004000 /*10:Read operation */ +#define PROM_Write 0x00002000 /*01:Write operation */ +#define PROM_Erase 0x00006000 /*11:Erase operation */ + /*00:Enable or Disable Writting, */ + /* as specified in PROM_Addr. */ +#define PROM_Addr_Ena 0x00000030 /*11xxxx:PROM Write enable */ + /*00xxxx: disable */ + +/* CAM_Ctl bit assign ------------------------------------------------------- */ +#define CAM_CompEn 0x00000010 /* 1:CAM Compare Enable */ +#define CAM_NegCAM 0x00000008 /* 1:Reject packets CAM recognizes,*/ + /* accept other */ +#define CAM_BroadAcc 0x00000004 /* 1:Broadcast assept */ +#define CAM_GroupAcc 0x00000002 /* 1:Multicast assept */ +#define CAM_StationAcc 0x00000001 /* 1:unicast accept */ + +/* CAM_Ena bit assign ------------------------------------------------------- */ +#define CAM_ENTRY_MAX 21 /* CAM Data entry max count */ +#define CAM_Ena_Mask ((1<<CAM_ENTRY_MAX)-1) /* CAM Enable bits (Max 21bits) */ +#define CAM_Ena_Bit(index) (1 << (index)) +#define CAM_ENTRY_DESTINATION 0 +#define CAM_ENTRY_SOURCE 1 +#define CAM_ENTRY_MACCTL 20 + +/* Tx_Ctl bit assign -------------------------------------------------------- */ +#define Tx_En 0x00000001 /* 1:Transmit enable */ +#define Tx_TxHalt 0x00000002 /* 1:Transmit Halt Request */ +#define Tx_NoPad 0x00000004 /* 1:Suppress Padding */ +#define Tx_NoCRC 0x00000008 /* 1:Suppress Padding */ +#define Tx_FBack 0x00000010 /* 1:Fast Back-off */ +#define Tx_EnUnder 0x00000100 /* 1:Enable Underrun */ +#define Tx_EnExDefer 0x00000200 /* 1:Enable Excessive Deferral */ +#define Tx_EnLCarr 0x00000400 /* 1:Enable Lost Carrier */ +#define Tx_EnExColl 0x00000800 /* 1:Enable Excessive Collision */ +#define Tx_EnLateColl 0x00001000 /* 1:Enable Late Collision */ +#define Tx_EnTxPar 0x00002000 /* 1:Enable Transmit Parity */ +#define Tx_EnComp 0x00004000 /* 1:Enable Completion */ + +/* Tx_Stat bit assign ------------------------------------------------------- */ +#define Tx_TxColl_MASK 0x0000000F /* Tx Collision Count */ +#define Tx_ExColl 0x00000010 /* Excessive Collision */ +#define Tx_TXDefer 0x00000020 /* Transmit Defered */ +#define Tx_Paused 0x00000040 /* Transmit Paused */ +#define Tx_IntTx 0x00000080 /* Interrupt on Tx */ +#define Tx_Under 0x00000100 /* Underrun */ +#define Tx_Defer 0x00000200 /* Deferral */ +#define Tx_NCarr 0x00000400 /* No Carrier */ +#define Tx_10Stat 0x00000800 /* 10Mbps Status */ +#define Tx_LateColl 0x00001000 /* Late Collision */ +#define Tx_TxPar 0x00002000 /* Tx Parity Error */ +#define Tx_Comp 0x00004000 /* Completion */ +#define Tx_Halted 0x00008000 /* Tx Halted */ +#define Tx_SQErr 0x00010000 /* Signal Quality Error(SQE) */ + +/* Rx_Ctl bit assign -------------------------------------------------------- */ +#define Rx_EnGood 0x00004000 /* 1:Enable Good */ +#define Rx_EnRxPar 0x00002000 /* 1:Enable Receive Parity */ +#define Rx_EnLongErr 0x00000800 /* 1:Enable Long Error */ +#define Rx_EnOver 0x00000400 /* 1:Enable OverFlow */ +#define Rx_EnCRCErr 0x00000200 /* 1:Enable CRC Error */ +#define Rx_EnAlign 0x00000100 /* 1:Enable Alignment */ +#define Rx_IgnoreCRC 0x00000040 /* 1:Ignore CRC Value */ +#define Rx_StripCRC 0x00000010 /* 1:Strip CRC Value */ +#define Rx_ShortEn 0x00000008 /* 1:Short Enable */ +#define Rx_LongEn 0x00000004 /* 1:Long Enable */ +#define Rx_RxHalt 0x00000002 /* 1:Receive Halt Request */ +#define Rx_RxEn 0x00000001 /* 1:Receive Intrrupt Enable */ + +/* Rx_Stat bit assign ------------------------------------------------------- */ +#define Rx_Halted 0x00008000 /* Rx Halted */ +#define Rx_Good 0x00004000 /* Rx Good */ +#define Rx_RxPar 0x00002000 /* Rx Parity Error */ +#define Rx_TypePkt 0x00001000 /* Rx Type Packet */ +#define Rx_LongErr 0x00000800 /* Rx Long Error */ +#define Rx_Over 0x00000400 /* Rx Overflow */ +#define Rx_CRCErr 0x00000200 /* Rx CRC Error */ +#define Rx_Align 0x00000100 /* Rx Alignment Error */ +#define Rx_10Stat 0x00000080 /* Rx 10Mbps Status */ +#define Rx_IntRx 0x00000040 /* Rx Interrupt */ +#define Rx_CtlRecd 0x00000020 /* Rx Control Receive */ +#define Rx_InLenErr 0x00000010 /* Rx In Range Frame Length Error */ + +#define Rx_Stat_Mask 0x0000FFF0 /* Rx All Status Mask */ + +/* Int_En bit assign -------------------------------------------------------- */ +#define Int_NRAbtEn 0x00000800 /* 1:Non-recoverable Abort Enable */ +#define Int_TxCtlCmpEn 0x00000400 /* 1:Transmit Ctl Complete Enable */ +#define Int_DmParErrEn 0x00000200 /* 1:DMA Parity Error Enable */ +#define Int_DParDEn 0x00000100 /* 1:Data Parity Error Enable */ +#define Int_EarNotEn 0x00000080 /* 1:Early Notify Enable */ +#define Int_DParErrEn 0x00000040 /* 1:Detected Parity Error Enable */ +#define Int_SSysErrEn 0x00000020 /* 1:Signalled System Error Enable */ +#define Int_RMasAbtEn 0x00000010 /* 1:Received Master Abort Enable */ +#define Int_RTargAbtEn 0x00000008 /* 1:Received Target Abort Enable */ +#define Int_STargAbtEn 0x00000004 /* 1:Signalled Target Abort Enable */ +#define Int_BLExEn 0x00000002 /* 1:Buffer List Exhausted Enable */ +#define Int_FDAExEn 0x00000001 /* 1:Free Descriptor Area */ + /* Exhausted Enable */ + +/* Int_Src bit assign ------------------------------------------------------- */ +#define Int_NRabt 0x00004000 /* 1:Non Recoverable error */ +#define Int_DmParErrStat 0x00002000 /* 1:DMA Parity Error & Clear */ +#define Int_BLEx 0x00001000 /* 1:Buffer List Empty & Clear */ +#define Int_FDAEx 0x00000800 /* 1:FDA Empty & Clear */ +#define Int_IntNRAbt 0x00000400 /* 1:Non Recoverable Abort */ +#define Int_IntCmp 0x00000200 /* 1:MAC control packet complete */ +#define Int_IntExBD 0x00000100 /* 1:Interrupt Extra BD & Clear */ +#define Int_DmParErr 0x00000080 /* 1:DMA Parity Error & Clear */ +#define Int_IntEarNot 0x00000040 /* 1:Receive Data write & Clear */ +#define Int_SWInt 0x00000020 /* 1:Software request & Clear */ +#define Int_IntBLEx 0x00000010 /* 1:Buffer List Empty & Clear */ +#define Int_IntFDAEx 0x00000008 /* 1:FDA Empty & Clear */ +#define Int_IntPCI 0x00000004 /* 1:PCI controller & Clear */ +#define Int_IntMacRx 0x00000002 /* 1:Rx controller & Clear */ +#define Int_IntMacTx 0x00000001 /* 1:Tx controller & Clear */ + +/* MD_CA bit assign --------------------------------------------------------- */ +#define MD_CA_PreSup 0x00001000 /* 1:Preamble Suppress */ +#define MD_CA_Busy 0x00000800 /* 1:Busy (Start Operation) */ +#define MD_CA_Wr 0x00000400 /* 1:Write 0:Read */ + + +/* + * Descriptors + */ + +/* Frame descripter */ +struct FDesc { + volatile __u32 FDNext; + volatile __u32 FDSystem; + volatile __u32 FDStat; + volatile __u32 FDCtl; +}; + +/* Buffer descripter */ +struct BDesc { + volatile __u32 BuffData; + volatile __u32 BDCtl; +}; + +#define FD_ALIGN 16 + +/* Frame Descripter bit assign ---------------------------------------------- */ +#define FD_FDLength_MASK 0x0000FFFF /* Length MASK */ +#define FD_BDCnt_MASK 0x001F0000 /* BD count MASK in FD */ +#define FD_FrmOpt_MASK 0x7C000000 /* Frame option MASK */ +#define FD_FrmOpt_BigEndian 0x40000000 /* Tx/Rx */ +#define FD_FrmOpt_IntTx 0x20000000 /* Tx only */ +#define FD_FrmOpt_NoCRC 0x10000000 /* Tx only */ +#define FD_FrmOpt_NoPadding 0x08000000 /* Tx only */ +#define FD_FrmOpt_Packing 0x04000000 /* Rx only */ +#define FD_CownsFD 0x80000000 /* FD Controller owner bit */ +#define FD_Next_EOL 0x00000001 /* FD EOL indicator */ +#define FD_BDCnt_SHIFT 16 + +/* Buffer Descripter bit assign --------------------------------------------- */ +#define BD_BuffLength_MASK 0x0000FFFF /* Receive Data Size */ +#define BD_RxBDID_MASK 0x00FF0000 /* BD ID Number MASK */ +#define BD_RxBDSeqN_MASK 0x7F000000 /* Rx BD Sequence Number */ +#define BD_CownsBD 0x80000000 /* BD Controller owner bit */ +#define BD_RxBDID_SHIFT 16 +#define BD_RxBDSeqN_SHIFT 24 + + +/* Some useful constants. */ + +#define TX_CTL_CMD (Tx_EnTxPar | Tx_EnLateColl | \ + Tx_EnExColl | Tx_EnLCarr | Tx_EnExDefer | Tx_EnUnder | \ + Tx_En) /* maybe 0x7b01 */ +/* Do not use Rx_StripCRC -- it causes trouble on BLEx/FDAEx condition */ +#define RX_CTL_CMD (Rx_EnGood | Rx_EnRxPar | Rx_EnLongErr | Rx_EnOver \ + | Rx_EnCRCErr | Rx_EnAlign | Rx_RxEn) /* maybe 0x6f01 */ +#define INT_EN_CMD (Int_NRAbtEn | \ + Int_DmParErrEn | Int_DParDEn | Int_DParErrEn | \ + Int_SSysErrEn | Int_RMasAbtEn | Int_RTargAbtEn | \ + Int_STargAbtEn | \ + Int_BLExEn | Int_FDAExEn) /* maybe 0xb7f*/ +#define DMA_CTL_CMD DMA_BURST_SIZE +#define HAVE_DMA_RXALIGN(lp) likely((lp)->chiptype != TC35815CF) + +/* Tuning parameters */ +#define DMA_BURST_SIZE 32 +#define TX_THRESHOLD 1024 +/* used threshold with packet max byte for low pci transfer ability.*/ +#define TX_THRESHOLD_MAX 1536 +/* setting threshold max value when overrun error occurred this count. */ +#define TX_THRESHOLD_KEEP_LIMIT 10 + +/* 16 + RX_BUF_NUM * 8 + RX_FD_NUM * 16 + TX_FD_NUM * 32 <= PAGE_SIZE*FD_PAGE_NUM */ +#define FD_PAGE_NUM 4 +#define RX_BUF_NUM 128 /* < 256 */ +#define RX_FD_NUM 256 /* >= 32 */ +#define TX_FD_NUM 128 +#if RX_CTL_CMD & Rx_LongEn +#define RX_BUF_SIZE PAGE_SIZE +#elif RX_CTL_CMD & Rx_StripCRC +#define RX_BUF_SIZE \ + L1_CACHE_ALIGN(ETH_FRAME_LEN + VLAN_HLEN + NET_IP_ALIGN) +#else +#define RX_BUF_SIZE \ + L1_CACHE_ALIGN(ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN + NET_IP_ALIGN) +#endif +#define RX_FD_RESERVE (2 / 2) /* max 2 BD per RxFD */ +#define NAPI_WEIGHT 16 + +struct TxFD { + struct FDesc fd; + struct BDesc bd; + struct BDesc unused; +}; + +struct RxFD { + struct FDesc fd; + struct BDesc bd[0]; /* variable length */ +}; + +struct FrFD { + struct FDesc fd; + struct BDesc bd[RX_BUF_NUM]; +}; + + +#define tc_readl(addr) ioread32(addr) +#define tc_writel(d, addr) iowrite32(d, addr) + +#define TC35815_TX_TIMEOUT msecs_to_jiffies(400) + +/* Information that need to be kept for each controller. */ +struct tc35815_local { + struct pci_dev *pci_dev; + + struct net_device *dev; + struct napi_struct napi; + + /* statistics */ + struct { + int max_tx_qlen; + int tx_ints; + int rx_ints; + int tx_underrun; + } lstats; + + /* Tx control lock. This protects the transmit buffer ring + * state along with the "tx full" state of the driver. This + * means all netif_queue flow control actions are protected + * by this lock as well. + */ + spinlock_t lock; + spinlock_t rx_lock; + + struct mii_bus *mii_bus; + struct phy_device *phy_dev; + int duplex; + int speed; + int link; + struct work_struct restart_work; + + /* + * Transmitting: Batch Mode. + * 1 BD in 1 TxFD. + * Receiving: Non-Packing Mode. + * 1 circular FD for Free Buffer List. + * RX_BUF_NUM BD in Free Buffer FD. + * One Free Buffer BD has ETH_FRAME_LEN data buffer. + */ + void *fd_buf; /* for TxFD, RxFD, FrFD */ + dma_addr_t fd_buf_dma; + struct TxFD *tfd_base; + unsigned int tfd_start; + unsigned int tfd_end; + struct RxFD *rfd_base; + struct RxFD *rfd_limit; + struct RxFD *rfd_cur; + struct FrFD *fbl_ptr; + unsigned int fbl_count; + struct { + struct sk_buff *skb; + dma_addr_t skb_dma; + } tx_skbs[TX_FD_NUM], rx_skbs[RX_BUF_NUM]; + u32 msg_enable; + enum tc35815_chiptype chiptype; +}; + +static inline dma_addr_t fd_virt_to_bus(struct tc35815_local *lp, void *virt) +{ + return lp->fd_buf_dma + ((u8 *)virt - (u8 *)lp->fd_buf); +} +#ifdef DEBUG +static inline void *fd_bus_to_virt(struct tc35815_local *lp, dma_addr_t bus) +{ + return (void *)((u8 *)lp->fd_buf + (bus - lp->fd_buf_dma)); +} +#endif +static struct sk_buff *alloc_rxbuf_skb(struct net_device *dev, + struct pci_dev *hwdev, + dma_addr_t *dma_handle) +{ + struct sk_buff *skb; + skb = dev_alloc_skb(RX_BUF_SIZE); + if (!skb) + return NULL; + *dma_handle = pci_map_single(hwdev, skb->data, RX_BUF_SIZE, + PCI_DMA_FROMDEVICE); + if (pci_dma_mapping_error(hwdev, *dma_handle)) { + dev_kfree_skb_any(skb); + return NULL; + } + skb_reserve(skb, 2); /* make IP header 4byte aligned */ + return skb; +} + +static void free_rxbuf_skb(struct pci_dev *hwdev, struct sk_buff *skb, dma_addr_t dma_handle) +{ + pci_unmap_single(hwdev, dma_handle, RX_BUF_SIZE, + PCI_DMA_FROMDEVICE); + dev_kfree_skb_any(skb); +} + +/* Index to functions, as function prototypes. */ + +static int tc35815_open(struct net_device *dev); +static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev); +static irqreturn_t tc35815_interrupt(int irq, void *dev_id); +static int tc35815_rx(struct net_device *dev, int limit); +static int tc35815_poll(struct napi_struct *napi, int budget); +static void tc35815_txdone(struct net_device *dev); +static int tc35815_close(struct net_device *dev); +static struct net_device_stats *tc35815_get_stats(struct net_device *dev); +static void tc35815_set_multicast_list(struct net_device *dev); +static void tc35815_tx_timeout(struct net_device *dev); +static int tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +#ifdef CONFIG_NET_POLL_CONTROLLER +static void tc35815_poll_controller(struct net_device *dev); +#endif +static const struct ethtool_ops tc35815_ethtool_ops; + +/* Example routines you must write ;->. */ +static void tc35815_chip_reset(struct net_device *dev); +static void tc35815_chip_init(struct net_device *dev); + +#ifdef DEBUG +static void panic_queues(struct net_device *dev); +#endif + +static void tc35815_restart_work(struct work_struct *work); + +static int tc_mdio_read(struct mii_bus *bus, int mii_id, int regnum) +{ + struct net_device *dev = bus->priv; + struct tc35815_regs __iomem *tr = + (struct tc35815_regs __iomem *)dev->base_addr; + unsigned long timeout = jiffies + HZ; + + tc_writel(MD_CA_Busy | (mii_id << 5) | (regnum & 0x1f), &tr->MD_CA); + udelay(12); /* it takes 32 x 400ns at least */ + while (tc_readl(&tr->MD_CA) & MD_CA_Busy) { + if (time_after(jiffies, timeout)) + return -EIO; + cpu_relax(); + } + return tc_readl(&tr->MD_Data) & 0xffff; +} + +static int tc_mdio_write(struct mii_bus *bus, int mii_id, int regnum, u16 val) +{ + struct net_device *dev = bus->priv; + struct tc35815_regs __iomem *tr = + (struct tc35815_regs __iomem *)dev->base_addr; + unsigned long timeout = jiffies + HZ; + + tc_writel(val, &tr->MD_Data); + tc_writel(MD_CA_Busy | MD_CA_Wr | (mii_id << 5) | (regnum & 0x1f), + &tr->MD_CA); + udelay(12); /* it takes 32 x 400ns at least */ + while (tc_readl(&tr->MD_CA) & MD_CA_Busy) { + if (time_after(jiffies, timeout)) + return -EIO; + cpu_relax(); + } + return 0; +} + +static void tc_handle_link_change(struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + struct phy_device *phydev = lp->phy_dev; + unsigned long flags; + int status_change = 0; + + spin_lock_irqsave(&lp->lock, flags); + if (phydev->link && + (lp->speed != phydev->speed || lp->duplex != phydev->duplex)) { + struct tc35815_regs __iomem *tr = + (struct tc35815_regs __iomem *)dev->base_addr; + u32 reg; + + reg = tc_readl(&tr->MAC_Ctl); + reg |= MAC_HaltReq; + tc_writel(reg, &tr->MAC_Ctl); + if (phydev->duplex == DUPLEX_FULL) + reg |= MAC_FullDup; + else + reg &= ~MAC_FullDup; + tc_writel(reg, &tr->MAC_Ctl); + reg &= ~MAC_HaltReq; + tc_writel(reg, &tr->MAC_Ctl); + + /* + * TX4939 PCFG.SPEEDn bit will be changed on + * NETDEV_CHANGE event. + */ + /* + * WORKAROUND: enable LostCrS only if half duplex + * operation. + * (TX4939 does not have EnLCarr) + */ + if (phydev->duplex == DUPLEX_HALF && + lp->chiptype != TC35815_TX4939) + tc_writel(tc_readl(&tr->Tx_Ctl) | Tx_EnLCarr, + &tr->Tx_Ctl); + + lp->speed = phydev->speed; + lp->duplex = phydev->duplex; + status_change = 1; + } + + if (phydev->link != lp->link) { + if (phydev->link) { + /* delayed promiscuous enabling */ + if (dev->flags & IFF_PROMISC) + tc35815_set_multicast_list(dev); + } else { + lp->speed = 0; + lp->duplex = -1; + } + lp->link = phydev->link; + + status_change = 1; + } + spin_unlock_irqrestore(&lp->lock, flags); + + if (status_change && netif_msg_link(lp)) { + phy_print_status(phydev); + pr_debug("%s: MII BMCR %04x BMSR %04x LPA %04x\n", + dev->name, + phy_read(phydev, MII_BMCR), + phy_read(phydev, MII_BMSR), + phy_read(phydev, MII_LPA)); + } +} + +static int tc_mii_probe(struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + struct phy_device *phydev = NULL; + int phy_addr; + u32 dropmask; + + /* find the first phy */ + for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) { + if (lp->mii_bus->phy_map[phy_addr]) { + if (phydev) { + printk(KERN_ERR "%s: multiple PHYs found\n", + dev->name); + return -EINVAL; + } + phydev = lp->mii_bus->phy_map[phy_addr]; + break; + } + } + + if (!phydev) { + printk(KERN_ERR "%s: no PHY found\n", dev->name); + return -ENODEV; + } + + /* attach the mac to the phy */ + phydev = phy_connect(dev, dev_name(&phydev->dev), + &tc_handle_link_change, 0, + lp->chiptype == TC35815_TX4939 ? + PHY_INTERFACE_MODE_RMII : PHY_INTERFACE_MODE_MII); + if (IS_ERR(phydev)) { + printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name); + return PTR_ERR(phydev); + } + printk(KERN_INFO "%s: attached PHY driver [%s] " + "(mii_bus:phy_addr=%s, id=%x)\n", + dev->name, phydev->drv->name, dev_name(&phydev->dev), + phydev->phy_id); + + /* mask with MAC supported features */ + phydev->supported &= PHY_BASIC_FEATURES; + dropmask = 0; + if (options.speed == 10) + dropmask |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full; + else if (options.speed == 100) + dropmask |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full; + if (options.duplex == 1) + dropmask |= SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Full; + else if (options.duplex == 2) + dropmask |= SUPPORTED_10baseT_Half | SUPPORTED_100baseT_Half; + phydev->supported &= ~dropmask; + phydev->advertising = phydev->supported; + + lp->link = 0; + lp->speed = 0; + lp->duplex = -1; + lp->phy_dev = phydev; + + return 0; +} + +static int tc_mii_init(struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + int err; + int i; + + lp->mii_bus = mdiobus_alloc(); + if (lp->mii_bus == NULL) { + err = -ENOMEM; + goto err_out; + } + + lp->mii_bus->name = "tc35815_mii_bus"; + lp->mii_bus->read = tc_mdio_read; + lp->mii_bus->write = tc_mdio_write; + snprintf(lp->mii_bus->id, MII_BUS_ID_SIZE, "%x", + (lp->pci_dev->bus->number << 8) | lp->pci_dev->devfn); + lp->mii_bus->priv = dev; + lp->mii_bus->parent = &lp->pci_dev->dev; + lp->mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL); + if (!lp->mii_bus->irq) { + err = -ENOMEM; + goto err_out_free_mii_bus; + } + + for (i = 0; i < PHY_MAX_ADDR; i++) + lp->mii_bus->irq[i] = PHY_POLL; + + err = mdiobus_register(lp->mii_bus); + if (err) + goto err_out_free_mdio_irq; + err = tc_mii_probe(dev); + if (err) + goto err_out_unregister_bus; + return 0; + +err_out_unregister_bus: + mdiobus_unregister(lp->mii_bus); +err_out_free_mdio_irq: + kfree(lp->mii_bus->irq); +err_out_free_mii_bus: + mdiobus_free(lp->mii_bus); +err_out: + return err; +} + +#ifdef CONFIG_CPU_TX49XX +/* + * Find a platform_device providing a MAC address. The platform code + * should provide a "tc35815-mac" device with a MAC address in its + * platform_data. + */ +static int __devinit tc35815_mac_match(struct device *dev, void *data) +{ + struct platform_device *plat_dev = to_platform_device(dev); + struct pci_dev *pci_dev = data; + unsigned int id = pci_dev->irq; + return !strcmp(plat_dev->name, "tc35815-mac") && plat_dev->id == id; +} + +static int __devinit tc35815_read_plat_dev_addr(struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + struct device *pd = bus_find_device(&platform_bus_type, NULL, + lp->pci_dev, tc35815_mac_match); + if (pd) { + if (pd->platform_data) + memcpy(dev->dev_addr, pd->platform_data, ETH_ALEN); + put_device(pd); + return is_valid_ether_addr(dev->dev_addr) ? 0 : -ENODEV; + } + return -ENODEV; +} +#else +static int __devinit tc35815_read_plat_dev_addr(struct net_device *dev) +{ + return -ENODEV; +} +#endif + +static int __devinit tc35815_init_dev_addr(struct net_device *dev) +{ + struct tc35815_regs __iomem *tr = + (struct tc35815_regs __iomem *)dev->base_addr; + int i; + + while (tc_readl(&tr->PROM_Ctl) & PROM_Busy) + ; + for (i = 0; i < 6; i += 2) { + unsigned short data; + tc_writel(PROM_Busy | PROM_Read | (i / 2 + 2), &tr->PROM_Ctl); + while (tc_readl(&tr->PROM_Ctl) & PROM_Busy) + ; + data = tc_readl(&tr->PROM_Data); + dev->dev_addr[i] = data & 0xff; + dev->dev_addr[i+1] = data >> 8; + } + if (!is_valid_ether_addr(dev->dev_addr)) + return tc35815_read_plat_dev_addr(dev); + return 0; +} + +static const struct net_device_ops tc35815_netdev_ops = { + .ndo_open = tc35815_open, + .ndo_stop = tc35815_close, + .ndo_start_xmit = tc35815_send_packet, + .ndo_get_stats = tc35815_get_stats, + .ndo_set_multicast_list = tc35815_set_multicast_list, + .ndo_tx_timeout = tc35815_tx_timeout, + .ndo_do_ioctl = tc35815_ioctl, + .ndo_validate_addr = eth_validate_addr, + .ndo_change_mtu = eth_change_mtu, + .ndo_set_mac_address = eth_mac_addr, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = tc35815_poll_controller, +#endif +}; + +static int __devinit tc35815_init_one(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + void __iomem *ioaddr = NULL; + struct net_device *dev; + struct tc35815_local *lp; + int rc; + + static int printed_version; + if (!printed_version++) { + printk(version); + dev_printk(KERN_DEBUG, &pdev->dev, + "speed:%d duplex:%d\n", + options.speed, options.duplex); + } + + if (!pdev->irq) { + dev_warn(&pdev->dev, "no IRQ assigned.\n"); + return -ENODEV; + } + + /* dev zeroed in alloc_etherdev */ + dev = alloc_etherdev(sizeof(*lp)); + if (dev == NULL) { + dev_err(&pdev->dev, "unable to alloc new ethernet\n"); + return -ENOMEM; + } + SET_NETDEV_DEV(dev, &pdev->dev); + lp = netdev_priv(dev); + lp->dev = dev; + + /* enable device (incl. PCI PM wakeup), and bus-mastering */ + rc = pcim_enable_device(pdev); + if (rc) + goto err_out; + rc = pcim_iomap_regions(pdev, 1 << 1, MODNAME); + if (rc) + goto err_out; + pci_set_master(pdev); + ioaddr = pcim_iomap_table(pdev)[1]; + + /* Initialize the device structure. */ + dev->netdev_ops = &tc35815_netdev_ops; + dev->ethtool_ops = &tc35815_ethtool_ops; + dev->watchdog_timeo = TC35815_TX_TIMEOUT; + netif_napi_add(dev, &lp->napi, tc35815_poll, NAPI_WEIGHT); + + dev->irq = pdev->irq; + dev->base_addr = (unsigned long)ioaddr; + + INIT_WORK(&lp->restart_work, tc35815_restart_work); + spin_lock_init(&lp->lock); + spin_lock_init(&lp->rx_lock); + lp->pci_dev = pdev; + lp->chiptype = ent->driver_data; + + lp->msg_enable = NETIF_MSG_TX_ERR | NETIF_MSG_HW | NETIF_MSG_DRV | NETIF_MSG_LINK; + pci_set_drvdata(pdev, dev); + + /* Soft reset the chip. */ + tc35815_chip_reset(dev); + + /* Retrieve the ethernet address. */ + if (tc35815_init_dev_addr(dev)) { + dev_warn(&pdev->dev, "not valid ether addr\n"); + random_ether_addr(dev->dev_addr); + } + + rc = register_netdev(dev); + if (rc) + goto err_out; + + memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len); + printk(KERN_INFO "%s: %s at 0x%lx, %pM, IRQ %d\n", + dev->name, + chip_info[ent->driver_data].name, + dev->base_addr, + dev->dev_addr, + dev->irq); + + rc = tc_mii_init(dev); + if (rc) + goto err_out_unregister; + + return 0; + +err_out_unregister: + unregister_netdev(dev); +err_out: + free_netdev(dev); + return rc; +} + + +static void __devexit tc35815_remove_one(struct pci_dev *pdev) +{ + struct net_device *dev = pci_get_drvdata(pdev); + struct tc35815_local *lp = netdev_priv(dev); + + phy_disconnect(lp->phy_dev); + mdiobus_unregister(lp->mii_bus); + kfree(lp->mii_bus->irq); + mdiobus_free(lp->mii_bus); + unregister_netdev(dev); + free_netdev(dev); + pci_set_drvdata(pdev, NULL); +} + +static int +tc35815_init_queues(struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + int i; + unsigned long fd_addr; + + if (!lp->fd_buf) { + BUG_ON(sizeof(struct FDesc) + + sizeof(struct BDesc) * RX_BUF_NUM + + sizeof(struct FDesc) * RX_FD_NUM + + sizeof(struct TxFD) * TX_FD_NUM > + PAGE_SIZE * FD_PAGE_NUM); + + lp->fd_buf = pci_alloc_consistent(lp->pci_dev, + PAGE_SIZE * FD_PAGE_NUM, + &lp->fd_buf_dma); + if (!lp->fd_buf) + return -ENOMEM; + for (i = 0; i < RX_BUF_NUM; i++) { + lp->rx_skbs[i].skb = + alloc_rxbuf_skb(dev, lp->pci_dev, + &lp->rx_skbs[i].skb_dma); + if (!lp->rx_skbs[i].skb) { + while (--i >= 0) { + free_rxbuf_skb(lp->pci_dev, + lp->rx_skbs[i].skb, + lp->rx_skbs[i].skb_dma); + lp->rx_skbs[i].skb = NULL; + } + pci_free_consistent(lp->pci_dev, + PAGE_SIZE * FD_PAGE_NUM, + lp->fd_buf, + lp->fd_buf_dma); + lp->fd_buf = NULL; + return -ENOMEM; + } + } + printk(KERN_DEBUG "%s: FD buf %p DataBuf", + dev->name, lp->fd_buf); + printk("\n"); + } else { + for (i = 0; i < FD_PAGE_NUM; i++) + clear_page((void *)((unsigned long)lp->fd_buf + + i * PAGE_SIZE)); + } + fd_addr = (unsigned long)lp->fd_buf; + + /* Free Descriptors (for Receive) */ + lp->rfd_base = (struct RxFD *)fd_addr; + fd_addr += sizeof(struct RxFD) * RX_FD_NUM; + for (i = 0; i < RX_FD_NUM; i++) + lp->rfd_base[i].fd.FDCtl = cpu_to_le32(FD_CownsFD); + lp->rfd_cur = lp->rfd_base; + lp->rfd_limit = (struct RxFD *)fd_addr - (RX_FD_RESERVE + 1); + + /* Transmit Descriptors */ + lp->tfd_base = (struct TxFD *)fd_addr; + fd_addr += sizeof(struct TxFD) * TX_FD_NUM; + for (i = 0; i < TX_FD_NUM; i++) { + lp->tfd_base[i].fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, &lp->tfd_base[i+1])); + lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff); + lp->tfd_base[i].fd.FDCtl = cpu_to_le32(0); + } + lp->tfd_base[TX_FD_NUM-1].fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, &lp->tfd_base[0])); + lp->tfd_start = 0; + lp->tfd_end = 0; + + /* Buffer List (for Receive) */ + lp->fbl_ptr = (struct FrFD *)fd_addr; + lp->fbl_ptr->fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, lp->fbl_ptr)); + lp->fbl_ptr->fd.FDCtl = cpu_to_le32(RX_BUF_NUM | FD_CownsFD); + /* + * move all allocated skbs to head of rx_skbs[] array. + * fbl_count mighe not be RX_BUF_NUM if alloc_rxbuf_skb() in + * tc35815_rx() had failed. + */ + lp->fbl_count = 0; + for (i = 0; i < RX_BUF_NUM; i++) { + if (lp->rx_skbs[i].skb) { + if (i != lp->fbl_count) { + lp->rx_skbs[lp->fbl_count].skb = + lp->rx_skbs[i].skb; + lp->rx_skbs[lp->fbl_count].skb_dma = + lp->rx_skbs[i].skb_dma; + } + lp->fbl_count++; + } + } + for (i = 0; i < RX_BUF_NUM; i++) { + if (i >= lp->fbl_count) { + lp->fbl_ptr->bd[i].BuffData = 0; + lp->fbl_ptr->bd[i].BDCtl = 0; + continue; + } + lp->fbl_ptr->bd[i].BuffData = + cpu_to_le32(lp->rx_skbs[i].skb_dma); + /* BDID is index of FrFD.bd[] */ + lp->fbl_ptr->bd[i].BDCtl = + cpu_to_le32(BD_CownsBD | (i << BD_RxBDID_SHIFT) | + RX_BUF_SIZE); + } + + printk(KERN_DEBUG "%s: TxFD %p RxFD %p FrFD %p\n", + dev->name, lp->tfd_base, lp->rfd_base, lp->fbl_ptr); + return 0; +} + +static void +tc35815_clear_queues(struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + int i; + + for (i = 0; i < TX_FD_NUM; i++) { + u32 fdsystem = le32_to_cpu(lp->tfd_base[i].fd.FDSystem); + struct sk_buff *skb = + fdsystem != 0xffffffff ? + lp->tx_skbs[fdsystem].skb : NULL; +#ifdef DEBUG + if (lp->tx_skbs[i].skb != skb) { + printk("%s: tx_skbs mismatch(%d).\n", dev->name, i); + panic_queues(dev); + } +#else + BUG_ON(lp->tx_skbs[i].skb != skb); +#endif + if (skb) { + pci_unmap_single(lp->pci_dev, lp->tx_skbs[i].skb_dma, skb->len, PCI_DMA_TODEVICE); + lp->tx_skbs[i].skb = NULL; + lp->tx_skbs[i].skb_dma = 0; + dev_kfree_skb_any(skb); + } + lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff); + } + + tc35815_init_queues(dev); +} + +static void +tc35815_free_queues(struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + int i; + + if (lp->tfd_base) { + for (i = 0; i < TX_FD_NUM; i++) { + u32 fdsystem = le32_to_cpu(lp->tfd_base[i].fd.FDSystem); + struct sk_buff *skb = + fdsystem != 0xffffffff ? + lp->tx_skbs[fdsystem].skb : NULL; +#ifdef DEBUG + if (lp->tx_skbs[i].skb != skb) { + printk("%s: tx_skbs mismatch(%d).\n", dev->name, i); + panic_queues(dev); + } +#else + BUG_ON(lp->tx_skbs[i].skb != skb); +#endif + if (skb) { + dev_kfree_skb(skb); + pci_unmap_single(lp->pci_dev, lp->tx_skbs[i].skb_dma, skb->len, PCI_DMA_TODEVICE); + lp->tx_skbs[i].skb = NULL; + lp->tx_skbs[i].skb_dma = 0; + } + lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff); + } + } + + lp->rfd_base = NULL; + lp->rfd_limit = NULL; + lp->rfd_cur = NULL; + lp->fbl_ptr = NULL; + + for (i = 0; i < RX_BUF_NUM; i++) { + if (lp->rx_skbs[i].skb) { + free_rxbuf_skb(lp->pci_dev, lp->rx_skbs[i].skb, + lp->rx_skbs[i].skb_dma); + lp->rx_skbs[i].skb = NULL; + } + } + if (lp->fd_buf) { + pci_free_consistent(lp->pci_dev, PAGE_SIZE * FD_PAGE_NUM, + lp->fd_buf, lp->fd_buf_dma); + lp->fd_buf = NULL; + } +} + +static void +dump_txfd(struct TxFD *fd) +{ + printk("TxFD(%p): %08x %08x %08x %08x\n", fd, + le32_to_cpu(fd->fd.FDNext), + le32_to_cpu(fd->fd.FDSystem), + le32_to_cpu(fd->fd.FDStat), + le32_to_cpu(fd->fd.FDCtl)); + printk("BD: "); + printk(" %08x %08x", + le32_to_cpu(fd->bd.BuffData), + le32_to_cpu(fd->bd.BDCtl)); + printk("\n"); +} + +static int +dump_rxfd(struct RxFD *fd) +{ + int i, bd_count = (le32_to_cpu(fd->fd.FDCtl) & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT; + if (bd_count > 8) + bd_count = 8; + printk("RxFD(%p): %08x %08x %08x %08x\n", fd, + le32_to_cpu(fd->fd.FDNext), + le32_to_cpu(fd->fd.FDSystem), + le32_to_cpu(fd->fd.FDStat), + le32_to_cpu(fd->fd.FDCtl)); + if (le32_to_cpu(fd->fd.FDCtl) & FD_CownsFD) + return 0; + printk("BD: "); + for (i = 0; i < bd_count; i++) + printk(" %08x %08x", + le32_to_cpu(fd->bd[i].BuffData), + le32_to_cpu(fd->bd[i].BDCtl)); + printk("\n"); + return bd_count; +} + +#ifdef DEBUG +static void +dump_frfd(struct FrFD *fd) +{ + int i; + printk("FrFD(%p): %08x %08x %08x %08x\n", fd, + le32_to_cpu(fd->fd.FDNext), + le32_to_cpu(fd->fd.FDSystem), + le32_to_cpu(fd->fd.FDStat), + le32_to_cpu(fd->fd.FDCtl)); + printk("BD: "); + for (i = 0; i < RX_BUF_NUM; i++) + printk(" %08x %08x", + le32_to_cpu(fd->bd[i].BuffData), + le32_to_cpu(fd->bd[i].BDCtl)); + printk("\n"); +} + +static void +panic_queues(struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + int i; + + printk("TxFD base %p, start %u, end %u\n", + lp->tfd_base, lp->tfd_start, lp->tfd_end); + printk("RxFD base %p limit %p cur %p\n", + lp->rfd_base, lp->rfd_limit, lp->rfd_cur); + printk("FrFD %p\n", lp->fbl_ptr); + for (i = 0; i < TX_FD_NUM; i++) + dump_txfd(&lp->tfd_base[i]); + for (i = 0; i < RX_FD_NUM; i++) { + int bd_count = dump_rxfd(&lp->rfd_base[i]); + i += (bd_count + 1) / 2; /* skip BDs */ + } + dump_frfd(lp->fbl_ptr); + panic("%s: Illegal queue state.", dev->name); +} +#endif + +static void print_eth(const u8 *add) +{ + printk(KERN_DEBUG "print_eth(%p)\n", add); + printk(KERN_DEBUG " %pM => %pM : %02x%02x\n", + add + 6, add, add[12], add[13]); +} + +static int tc35815_tx_full(struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + return (lp->tfd_start + 1) % TX_FD_NUM == lp->tfd_end; +} + +static void tc35815_restart(struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + + if (lp->phy_dev) { + int timeout; + + phy_write(lp->phy_dev, MII_BMCR, BMCR_RESET); + timeout = 100; + while (--timeout) { + if (!(phy_read(lp->phy_dev, MII_BMCR) & BMCR_RESET)) + break; + udelay(1); + } + if (!timeout) + printk(KERN_ERR "%s: BMCR reset failed.\n", dev->name); + } + + spin_lock_bh(&lp->rx_lock); + spin_lock_irq(&lp->lock); + tc35815_chip_reset(dev); + tc35815_clear_queues(dev); + tc35815_chip_init(dev); + /* Reconfigure CAM again since tc35815_chip_init() initialize it. */ + tc35815_set_multicast_list(dev); + spin_unlock_irq(&lp->lock); + spin_unlock_bh(&lp->rx_lock); + + netif_wake_queue(dev); +} + +static void tc35815_restart_work(struct work_struct *work) +{ + struct tc35815_local *lp = + container_of(work, struct tc35815_local, restart_work); + struct net_device *dev = lp->dev; + + tc35815_restart(dev); +} + +static void tc35815_schedule_restart(struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + struct tc35815_regs __iomem *tr = + (struct tc35815_regs __iomem *)dev->base_addr; + unsigned long flags; + + /* disable interrupts */ + spin_lock_irqsave(&lp->lock, flags); + tc_writel(0, &tr->Int_En); + tc_writel(tc_readl(&tr->DMA_Ctl) | DMA_IntMask, &tr->DMA_Ctl); + schedule_work(&lp->restart_work); + spin_unlock_irqrestore(&lp->lock, flags); +} + +static void tc35815_tx_timeout(struct net_device *dev) +{ + struct tc35815_regs __iomem *tr = + (struct tc35815_regs __iomem *)dev->base_addr; + + printk(KERN_WARNING "%s: transmit timed out, status %#x\n", + dev->name, tc_readl(&tr->Tx_Stat)); + + /* Try to restart the adaptor. */ + tc35815_schedule_restart(dev); + dev->stats.tx_errors++; +} + +/* + * Open/initialize the controller. This is called (in the current kernel) + * sometime after booting when the 'ifconfig' program is run. + * + * This routine should set everything up anew at each open, even + * registers that "should" only need to be set once at boot, so that + * there is non-reboot way to recover if something goes wrong. + */ +static int +tc35815_open(struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + + /* + * This is used if the interrupt line can turned off (shared). + * See 3c503.c for an example of selecting the IRQ at config-time. + */ + if (request_irq(dev->irq, tc35815_interrupt, IRQF_SHARED, + dev->name, dev)) + return -EAGAIN; + + tc35815_chip_reset(dev); + + if (tc35815_init_queues(dev) != 0) { + free_irq(dev->irq, dev); + return -EAGAIN; + } + + napi_enable(&lp->napi); + + /* Reset the hardware here. Don't forget to set the station address. */ + spin_lock_irq(&lp->lock); + tc35815_chip_init(dev); + spin_unlock_irq(&lp->lock); + + netif_carrier_off(dev); + /* schedule a link state check */ + phy_start(lp->phy_dev); + + /* We are now ready to accept transmit requeusts from + * the queueing layer of the networking. + */ + netif_start_queue(dev); + + return 0; +} + +/* This will only be invoked if your driver is _not_ in XOFF state. + * What this means is that you need not check it, and that this + * invariant will hold if you make sure that the netif_*_queue() + * calls are done at the proper times. + */ +static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + struct TxFD *txfd; + unsigned long flags; + + /* If some error occurs while trying to transmit this + * packet, you should return '1' from this function. + * In such a case you _may not_ do anything to the + * SKB, it is still owned by the network queueing + * layer when an error is returned. This means you + * may not modify any SKB fields, you may not free + * the SKB, etc. + */ + + /* This is the most common case for modern hardware. + * The spinlock protects this code from the TX complete + * hardware interrupt handler. Queue flow control is + * thus managed under this lock as well. + */ + spin_lock_irqsave(&lp->lock, flags); + + /* failsafe... (handle txdone now if half of FDs are used) */ + if ((lp->tfd_start + TX_FD_NUM - lp->tfd_end) % TX_FD_NUM > + TX_FD_NUM / 2) + tc35815_txdone(dev); + + if (netif_msg_pktdata(lp)) + print_eth(skb->data); +#ifdef DEBUG + if (lp->tx_skbs[lp->tfd_start].skb) { + printk("%s: tx_skbs conflict.\n", dev->name); + panic_queues(dev); + } +#else + BUG_ON(lp->tx_skbs[lp->tfd_start].skb); +#endif + lp->tx_skbs[lp->tfd_start].skb = skb; + lp->tx_skbs[lp->tfd_start].skb_dma = pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE); + + /*add to ring */ + txfd = &lp->tfd_base[lp->tfd_start]; + txfd->bd.BuffData = cpu_to_le32(lp->tx_skbs[lp->tfd_start].skb_dma); + txfd->bd.BDCtl = cpu_to_le32(skb->len); + txfd->fd.FDSystem = cpu_to_le32(lp->tfd_start); + txfd->fd.FDCtl = cpu_to_le32(FD_CownsFD | (1 << FD_BDCnt_SHIFT)); + + if (lp->tfd_start == lp->tfd_end) { + struct tc35815_regs __iomem *tr = + (struct tc35815_regs __iomem *)dev->base_addr; + /* Start DMA Transmitter. */ + txfd->fd.FDNext |= cpu_to_le32(FD_Next_EOL); + txfd->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx); + if (netif_msg_tx_queued(lp)) { + printk("%s: starting TxFD.\n", dev->name); + dump_txfd(txfd); + } + tc_writel(fd_virt_to_bus(lp, txfd), &tr->TxFrmPtr); + } else { + txfd->fd.FDNext &= cpu_to_le32(~FD_Next_EOL); + if (netif_msg_tx_queued(lp)) { + printk("%s: queueing TxFD.\n", dev->name); + dump_txfd(txfd); + } + } + lp->tfd_start = (lp->tfd_start + 1) % TX_FD_NUM; + + /* If we just used up the very last entry in the + * TX ring on this device, tell the queueing + * layer to send no more. + */ + if (tc35815_tx_full(dev)) { + if (netif_msg_tx_queued(lp)) + printk(KERN_WARNING "%s: TxFD Exhausted.\n", dev->name); + netif_stop_queue(dev); + } + + /* When the TX completion hw interrupt arrives, this + * is when the transmit statistics are updated. + */ + + spin_unlock_irqrestore(&lp->lock, flags); + return NETDEV_TX_OK; +} + +#define FATAL_ERROR_INT \ + (Int_IntPCI | Int_DmParErr | Int_IntNRAbt) +static void tc35815_fatal_error_interrupt(struct net_device *dev, u32 status) +{ + static int count; + printk(KERN_WARNING "%s: Fatal Error Intterrupt (%#x):", + dev->name, status); + if (status & Int_IntPCI) + printk(" IntPCI"); + if (status & Int_DmParErr) + printk(" DmParErr"); + if (status & Int_IntNRAbt) + printk(" IntNRAbt"); + printk("\n"); + if (count++ > 100) + panic("%s: Too many fatal errors.", dev->name); + printk(KERN_WARNING "%s: Resetting ...\n", dev->name); + /* Try to restart the adaptor. */ + tc35815_schedule_restart(dev); +} + +static int tc35815_do_interrupt(struct net_device *dev, u32 status, int limit) +{ + struct tc35815_local *lp = netdev_priv(dev); + int ret = -1; + + /* Fatal errors... */ + if (status & FATAL_ERROR_INT) { + tc35815_fatal_error_interrupt(dev, status); + return 0; + } + /* recoverable errors */ + if (status & Int_IntFDAEx) { + if (netif_msg_rx_err(lp)) + dev_warn(&dev->dev, + "Free Descriptor Area Exhausted (%#x).\n", + status); + dev->stats.rx_dropped++; + ret = 0; + } + if (status & Int_IntBLEx) { + if (netif_msg_rx_err(lp)) + dev_warn(&dev->dev, + "Buffer List Exhausted (%#x).\n", + status); + dev->stats.rx_dropped++; + ret = 0; + } + if (status & Int_IntExBD) { + if (netif_msg_rx_err(lp)) + dev_warn(&dev->dev, + "Excessive Buffer Descriptiors (%#x).\n", + status); + dev->stats.rx_length_errors++; + ret = 0; + } + + /* normal notification */ + if (status & Int_IntMacRx) { + /* Got a packet(s). */ + ret = tc35815_rx(dev, limit); + lp->lstats.rx_ints++; + } + if (status & Int_IntMacTx) { + /* Transmit complete. */ + lp->lstats.tx_ints++; + spin_lock_irq(&lp->lock); + tc35815_txdone(dev); + spin_unlock_irq(&lp->lock); + if (ret < 0) + ret = 0; + } + return ret; +} + +/* + * The typical workload of the driver: + * Handle the network interface interrupts. + */ +static irqreturn_t tc35815_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct tc35815_local *lp = netdev_priv(dev); + struct tc35815_regs __iomem *tr = + (struct tc35815_regs __iomem *)dev->base_addr; + u32 dmactl = tc_readl(&tr->DMA_Ctl); + + if (!(dmactl & DMA_IntMask)) { + /* disable interrupts */ + tc_writel(dmactl | DMA_IntMask, &tr->DMA_Ctl); + if (napi_schedule_prep(&lp->napi)) + __napi_schedule(&lp->napi); + else { + printk(KERN_ERR "%s: interrupt taken in poll\n", + dev->name); + BUG(); + } + (void)tc_readl(&tr->Int_Src); /* flush */ + return IRQ_HANDLED; + } + return IRQ_NONE; +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void tc35815_poll_controller(struct net_device *dev) +{ + disable_irq(dev->irq); + tc35815_interrupt(dev->irq, dev); + enable_irq(dev->irq); +} +#endif + +/* We have a good packet(s), get it/them out of the buffers. */ +static int +tc35815_rx(struct net_device *dev, int limit) +{ + struct tc35815_local *lp = netdev_priv(dev); + unsigned int fdctl; + int i; + int received = 0; + + while (!((fdctl = le32_to_cpu(lp->rfd_cur->fd.FDCtl)) & FD_CownsFD)) { + int status = le32_to_cpu(lp->rfd_cur->fd.FDStat); + int pkt_len = fdctl & FD_FDLength_MASK; + int bd_count = (fdctl & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT; +#ifdef DEBUG + struct RxFD *next_rfd; +#endif +#if (RX_CTL_CMD & Rx_StripCRC) == 0 + pkt_len -= ETH_FCS_LEN; +#endif + + if (netif_msg_rx_status(lp)) + dump_rxfd(lp->rfd_cur); + if (status & Rx_Good) { + struct sk_buff *skb; + unsigned char *data; + int cur_bd; + + if (--limit < 0) + break; + BUG_ON(bd_count > 1); + cur_bd = (le32_to_cpu(lp->rfd_cur->bd[0].BDCtl) + & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT; +#ifdef DEBUG + if (cur_bd >= RX_BUF_NUM) { + printk("%s: invalid BDID.\n", dev->name); + panic_queues(dev); + } + BUG_ON(lp->rx_skbs[cur_bd].skb_dma != + (le32_to_cpu(lp->rfd_cur->bd[0].BuffData) & ~3)); + if (!lp->rx_skbs[cur_bd].skb) { + printk("%s: NULL skb.\n", dev->name); + panic_queues(dev); + } +#else + BUG_ON(cur_bd >= RX_BUF_NUM); +#endif + skb = lp->rx_skbs[cur_bd].skb; + prefetch(skb->data); + lp->rx_skbs[cur_bd].skb = NULL; + pci_unmap_single(lp->pci_dev, + lp->rx_skbs[cur_bd].skb_dma, + RX_BUF_SIZE, PCI_DMA_FROMDEVICE); + if (!HAVE_DMA_RXALIGN(lp) && NET_IP_ALIGN) + memmove(skb->data, skb->data - NET_IP_ALIGN, + pkt_len); + data = skb_put(skb, pkt_len); + if (netif_msg_pktdata(lp)) + print_eth(data); + skb->protocol = eth_type_trans(skb, dev); + netif_receive_skb(skb); + received++; + dev->stats.rx_packets++; + dev->stats.rx_bytes += pkt_len; + } else { + dev->stats.rx_errors++; + if (netif_msg_rx_err(lp)) + dev_info(&dev->dev, "Rx error (status %x)\n", + status & Rx_Stat_Mask); + /* WORKAROUND: LongErr and CRCErr means Overflow. */ + if ((status & Rx_LongErr) && (status & Rx_CRCErr)) { + status &= ~(Rx_LongErr|Rx_CRCErr); + status |= Rx_Over; + } + if (status & Rx_LongErr) + dev->stats.rx_length_errors++; + if (status & Rx_Over) + dev->stats.rx_fifo_errors++; + if (status & Rx_CRCErr) + dev->stats.rx_crc_errors++; + if (status & Rx_Align) + dev->stats.rx_frame_errors++; + } + + if (bd_count > 0) { + /* put Free Buffer back to controller */ + int bdctl = le32_to_cpu(lp->rfd_cur->bd[bd_count - 1].BDCtl); + unsigned char id = + (bdctl & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT; +#ifdef DEBUG + if (id >= RX_BUF_NUM) { + printk("%s: invalid BDID.\n", dev->name); + panic_queues(dev); + } +#else + BUG_ON(id >= RX_BUF_NUM); +#endif + /* free old buffers */ + lp->fbl_count--; + while (lp->fbl_count < RX_BUF_NUM) + { + unsigned char curid = + (id + 1 + lp->fbl_count) % RX_BUF_NUM; + struct BDesc *bd = &lp->fbl_ptr->bd[curid]; +#ifdef DEBUG + bdctl = le32_to_cpu(bd->BDCtl); + if (bdctl & BD_CownsBD) { + printk("%s: Freeing invalid BD.\n", + dev->name); + panic_queues(dev); + } +#endif + /* pass BD to controller */ + if (!lp->rx_skbs[curid].skb) { + lp->rx_skbs[curid].skb = + alloc_rxbuf_skb(dev, + lp->pci_dev, + &lp->rx_skbs[curid].skb_dma); + if (!lp->rx_skbs[curid].skb) + break; /* try on next reception */ + bd->BuffData = cpu_to_le32(lp->rx_skbs[curid].skb_dma); + } + /* Note: BDLength was modified by chip. */ + bd->BDCtl = cpu_to_le32(BD_CownsBD | + (curid << BD_RxBDID_SHIFT) | + RX_BUF_SIZE); + lp->fbl_count++; + } + } + + /* put RxFD back to controller */ +#ifdef DEBUG + next_rfd = fd_bus_to_virt(lp, + le32_to_cpu(lp->rfd_cur->fd.FDNext)); + if (next_rfd < lp->rfd_base || next_rfd > lp->rfd_limit) { + printk("%s: RxFD FDNext invalid.\n", dev->name); + panic_queues(dev); + } +#endif + for (i = 0; i < (bd_count + 1) / 2 + 1; i++) { + /* pass FD to controller */ +#ifdef DEBUG + lp->rfd_cur->fd.FDNext = cpu_to_le32(0xdeaddead); +#else + lp->rfd_cur->fd.FDNext = cpu_to_le32(FD_Next_EOL); +#endif + lp->rfd_cur->fd.FDCtl = cpu_to_le32(FD_CownsFD); + lp->rfd_cur++; + } + if (lp->rfd_cur > lp->rfd_limit) + lp->rfd_cur = lp->rfd_base; +#ifdef DEBUG + if (lp->rfd_cur != next_rfd) + printk("rfd_cur = %p, next_rfd %p\n", + lp->rfd_cur, next_rfd); +#endif + } + + return received; +} + +static int tc35815_poll(struct napi_struct *napi, int budget) +{ + struct tc35815_local *lp = container_of(napi, struct tc35815_local, napi); + struct net_device *dev = lp->dev; + struct tc35815_regs __iomem *tr = + (struct tc35815_regs __iomem *)dev->base_addr; + int received = 0, handled; + u32 status; + + spin_lock(&lp->rx_lock); + status = tc_readl(&tr->Int_Src); + do { + /* BLEx, FDAEx will be cleared later */ + tc_writel(status & ~(Int_BLEx | Int_FDAEx), + &tr->Int_Src); /* write to clear */ + + handled = tc35815_do_interrupt(dev, status, budget - received); + if (status & (Int_BLEx | Int_FDAEx)) + tc_writel(status & (Int_BLEx | Int_FDAEx), + &tr->Int_Src); + if (handled >= 0) { + received += handled; + if (received >= budget) + break; + } + status = tc_readl(&tr->Int_Src); + } while (status); + spin_unlock(&lp->rx_lock); + + if (received < budget) { + napi_complete(napi); + /* enable interrupts */ + tc_writel(tc_readl(&tr->DMA_Ctl) & ~DMA_IntMask, &tr->DMA_Ctl); + } + return received; +} + +#define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_NCarr|Tx_LateColl|Tx_TxPar|Tx_SQErr) + +static void +tc35815_check_tx_stat(struct net_device *dev, int status) +{ + struct tc35815_local *lp = netdev_priv(dev); + const char *msg = NULL; + + /* count collisions */ + if (status & Tx_ExColl) + dev->stats.collisions += 16; + if (status & Tx_TxColl_MASK) + dev->stats.collisions += status & Tx_TxColl_MASK; + + /* TX4939 does not have NCarr */ + if (lp->chiptype == TC35815_TX4939) + status &= ~Tx_NCarr; + /* WORKAROUND: ignore LostCrS in full duplex operation */ + if (!lp->link || lp->duplex == DUPLEX_FULL) + status &= ~Tx_NCarr; + + if (!(status & TX_STA_ERR)) { + /* no error. */ + dev->stats.tx_packets++; + return; + } + + dev->stats.tx_errors++; + if (status & Tx_ExColl) { + dev->stats.tx_aborted_errors++; + msg = "Excessive Collision."; + } + if (status & Tx_Under) { + dev->stats.tx_fifo_errors++; + msg = "Tx FIFO Underrun."; + if (lp->lstats.tx_underrun < TX_THRESHOLD_KEEP_LIMIT) { + lp->lstats.tx_underrun++; + if (lp->lstats.tx_underrun >= TX_THRESHOLD_KEEP_LIMIT) { + struct tc35815_regs __iomem *tr = + (struct tc35815_regs __iomem *)dev->base_addr; + tc_writel(TX_THRESHOLD_MAX, &tr->TxThrsh); + msg = "Tx FIFO Underrun.Change Tx threshold to max."; + } + } + } + if (status & Tx_Defer) { + dev->stats.tx_fifo_errors++; + msg = "Excessive Deferral."; + } + if (status & Tx_NCarr) { + dev->stats.tx_carrier_errors++; + msg = "Lost Carrier Sense."; + } + if (status & Tx_LateColl) { + dev->stats.tx_aborted_errors++; + msg = "Late Collision."; + } + if (status & Tx_TxPar) { + dev->stats.tx_fifo_errors++; + msg = "Transmit Parity Error."; + } + if (status & Tx_SQErr) { + dev->stats.tx_heartbeat_errors++; + msg = "Signal Quality Error."; + } + if (msg && netif_msg_tx_err(lp)) + printk(KERN_WARNING "%s: %s (%#x)\n", dev->name, msg, status); +} + +/* This handles TX complete events posted by the device + * via interrupts. + */ +static void +tc35815_txdone(struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + struct TxFD *txfd; + unsigned int fdctl; + + txfd = &lp->tfd_base[lp->tfd_end]; + while (lp->tfd_start != lp->tfd_end && + !((fdctl = le32_to_cpu(txfd->fd.FDCtl)) & FD_CownsFD)) { + int status = le32_to_cpu(txfd->fd.FDStat); + struct sk_buff *skb; + unsigned long fdnext = le32_to_cpu(txfd->fd.FDNext); + u32 fdsystem = le32_to_cpu(txfd->fd.FDSystem); + + if (netif_msg_tx_done(lp)) { + printk("%s: complete TxFD.\n", dev->name); + dump_txfd(txfd); + } + tc35815_check_tx_stat(dev, status); + + skb = fdsystem != 0xffffffff ? + lp->tx_skbs[fdsystem].skb : NULL; +#ifdef DEBUG + if (lp->tx_skbs[lp->tfd_end].skb != skb) { + printk("%s: tx_skbs mismatch.\n", dev->name); + panic_queues(dev); + } +#else + BUG_ON(lp->tx_skbs[lp->tfd_end].skb != skb); +#endif + if (skb) { + dev->stats.tx_bytes += skb->len; + pci_unmap_single(lp->pci_dev, lp->tx_skbs[lp->tfd_end].skb_dma, skb->len, PCI_DMA_TODEVICE); + lp->tx_skbs[lp->tfd_end].skb = NULL; + lp->tx_skbs[lp->tfd_end].skb_dma = 0; + dev_kfree_skb_any(skb); + } + txfd->fd.FDSystem = cpu_to_le32(0xffffffff); + + lp->tfd_end = (lp->tfd_end + 1) % TX_FD_NUM; + txfd = &lp->tfd_base[lp->tfd_end]; +#ifdef DEBUG + if ((fdnext & ~FD_Next_EOL) != fd_virt_to_bus(lp, txfd)) { + printk("%s: TxFD FDNext invalid.\n", dev->name); + panic_queues(dev); + } +#endif + if (fdnext & FD_Next_EOL) { + /* DMA Transmitter has been stopping... */ + if (lp->tfd_end != lp->tfd_start) { + struct tc35815_regs __iomem *tr = + (struct tc35815_regs __iomem *)dev->base_addr; + int head = (lp->tfd_start + TX_FD_NUM - 1) % TX_FD_NUM; + struct TxFD *txhead = &lp->tfd_base[head]; + int qlen = (lp->tfd_start + TX_FD_NUM + - lp->tfd_end) % TX_FD_NUM; + +#ifdef DEBUG + if (!(le32_to_cpu(txfd->fd.FDCtl) & FD_CownsFD)) { + printk("%s: TxFD FDCtl invalid.\n", dev->name); + panic_queues(dev); + } +#endif + /* log max queue length */ + if (lp->lstats.max_tx_qlen < qlen) + lp->lstats.max_tx_qlen = qlen; + + + /* start DMA Transmitter again */ + txhead->fd.FDNext |= cpu_to_le32(FD_Next_EOL); + txhead->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx); + if (netif_msg_tx_queued(lp)) { + printk("%s: start TxFD on queue.\n", + dev->name); + dump_txfd(txfd); + } + tc_writel(fd_virt_to_bus(lp, txfd), &tr->TxFrmPtr); + } + break; + } + } + + /* If we had stopped the queue due to a "tx full" + * condition, and space has now been made available, + * wake up the queue. + */ + if (netif_queue_stopped(dev) && !tc35815_tx_full(dev)) + netif_wake_queue(dev); +} + +/* The inverse routine to tc35815_open(). */ +static int +tc35815_close(struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + + netif_stop_queue(dev); + napi_disable(&lp->napi); + if (lp->phy_dev) + phy_stop(lp->phy_dev); + cancel_work_sync(&lp->restart_work); + + /* Flush the Tx and disable Rx here. */ + tc35815_chip_reset(dev); + free_irq(dev->irq, dev); + + tc35815_free_queues(dev); + + return 0; + +} + +/* + * Get the current statistics. + * This may be called with the card open or closed. + */ +static struct net_device_stats *tc35815_get_stats(struct net_device *dev) +{ + struct tc35815_regs __iomem *tr = + (struct tc35815_regs __iomem *)dev->base_addr; + if (netif_running(dev)) + /* Update the statistics from the device registers. */ + dev->stats.rx_missed_errors += tc_readl(&tr->Miss_Cnt); + + return &dev->stats; +} + +static void tc35815_set_cam_entry(struct net_device *dev, int index, unsigned char *addr) +{ + struct tc35815_local *lp = netdev_priv(dev); + struct tc35815_regs __iomem *tr = + (struct tc35815_regs __iomem *)dev->base_addr; + int cam_index = index * 6; + u32 cam_data; + u32 saved_addr; + + saved_addr = tc_readl(&tr->CAM_Adr); + + if (netif_msg_hw(lp)) + printk(KERN_DEBUG "%s: CAM %d: %pM\n", + dev->name, index, addr); + if (index & 1) { + /* read modify write */ + tc_writel(cam_index - 2, &tr->CAM_Adr); + cam_data = tc_readl(&tr->CAM_Data) & 0xffff0000; + cam_data |= addr[0] << 8 | addr[1]; + tc_writel(cam_data, &tr->CAM_Data); + /* write whole word */ + tc_writel(cam_index + 2, &tr->CAM_Adr); + cam_data = (addr[2] << 24) | (addr[3] << 16) | (addr[4] << 8) | addr[5]; + tc_writel(cam_data, &tr->CAM_Data); + } else { + /* write whole word */ + tc_writel(cam_index, &tr->CAM_Adr); + cam_data = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]; + tc_writel(cam_data, &tr->CAM_Data); + /* read modify write */ + tc_writel(cam_index + 4, &tr->CAM_Adr); + cam_data = tc_readl(&tr->CAM_Data) & 0x0000ffff; + cam_data |= addr[4] << 24 | (addr[5] << 16); + tc_writel(cam_data, &tr->CAM_Data); + } + + tc_writel(saved_addr, &tr->CAM_Adr); +} + + +/* + * 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 +tc35815_set_multicast_list(struct net_device *dev) +{ + struct tc35815_regs __iomem *tr = + (struct tc35815_regs __iomem *)dev->base_addr; + + if (dev->flags & IFF_PROMISC) { + /* With some (all?) 100MHalf HUB, controller will hang + * if we enabled promiscuous mode before linkup... */ + struct tc35815_local *lp = netdev_priv(dev); + + if (!lp->link) + return; + /* Enable promiscuous mode */ + tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc | CAM_StationAcc, &tr->CAM_Ctl); + } else if ((dev->flags & IFF_ALLMULTI) || + netdev_mc_count(dev) > CAM_ENTRY_MAX - 3) { + /* CAM 0, 1, 20 are reserved. */ + /* Disable promiscuous mode, use normal mode. */ + tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc, &tr->CAM_Ctl); + } else if (!netdev_mc_empty(dev)) { + struct netdev_hw_addr *ha; + int i; + int ena_bits = CAM_Ena_Bit(CAM_ENTRY_SOURCE); + + tc_writel(0, &tr->CAM_Ctl); + /* Walk the address list, and load the filter */ + i = 0; + netdev_for_each_mc_addr(ha, dev) { + /* entry 0,1 is reserved. */ + tc35815_set_cam_entry(dev, i + 2, ha->addr); + ena_bits |= CAM_Ena_Bit(i + 2); + i++; + } + tc_writel(ena_bits, &tr->CAM_Ena); + tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl); + } else { + tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena); + tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl); + } +} + +static void tc35815_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) +{ + struct tc35815_local *lp = netdev_priv(dev); + strcpy(info->driver, MODNAME); + strcpy(info->version, DRV_VERSION); + strcpy(info->bus_info, pci_name(lp->pci_dev)); +} + +static int tc35815_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct tc35815_local *lp = netdev_priv(dev); + + if (!lp->phy_dev) + return -ENODEV; + return phy_ethtool_gset(lp->phy_dev, cmd); +} + +static int tc35815_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct tc35815_local *lp = netdev_priv(dev); + + if (!lp->phy_dev) + return -ENODEV; + return phy_ethtool_sset(lp->phy_dev, cmd); +} + +static u32 tc35815_get_msglevel(struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + return lp->msg_enable; +} + +static void tc35815_set_msglevel(struct net_device *dev, u32 datum) +{ + struct tc35815_local *lp = netdev_priv(dev); + lp->msg_enable = datum; +} + +static int tc35815_get_sset_count(struct net_device *dev, int sset) +{ + struct tc35815_local *lp = netdev_priv(dev); + + switch (sset) { + case ETH_SS_STATS: + return sizeof(lp->lstats) / sizeof(int); + default: + return -EOPNOTSUPP; + } +} + +static void tc35815_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data) +{ + struct tc35815_local *lp = netdev_priv(dev); + data[0] = lp->lstats.max_tx_qlen; + data[1] = lp->lstats.tx_ints; + data[2] = lp->lstats.rx_ints; + data[3] = lp->lstats.tx_underrun; +} + +static struct { + const char str[ETH_GSTRING_LEN]; +} ethtool_stats_keys[] = { + { "max_tx_qlen" }, + { "tx_ints" }, + { "rx_ints" }, + { "tx_underrun" }, +}; + +static void tc35815_get_strings(struct net_device *dev, u32 stringset, u8 *data) +{ + memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys)); +} + +static const struct ethtool_ops tc35815_ethtool_ops = { + .get_drvinfo = tc35815_get_drvinfo, + .get_settings = tc35815_get_settings, + .set_settings = tc35815_set_settings, + .get_link = ethtool_op_get_link, + .get_msglevel = tc35815_get_msglevel, + .set_msglevel = tc35815_set_msglevel, + .get_strings = tc35815_get_strings, + .get_sset_count = tc35815_get_sset_count, + .get_ethtool_stats = tc35815_get_ethtool_stats, +}; + +static int tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + struct tc35815_local *lp = netdev_priv(dev); + + if (!netif_running(dev)) + return -EINVAL; + if (!lp->phy_dev) + return -ENODEV; + return phy_mii_ioctl(lp->phy_dev, rq, cmd); +} + +static void tc35815_chip_reset(struct net_device *dev) +{ + struct tc35815_regs __iomem *tr = + (struct tc35815_regs __iomem *)dev->base_addr; + int i; + /* reset the controller */ + tc_writel(MAC_Reset, &tr->MAC_Ctl); + udelay(4); /* 3200ns */ + i = 0; + while (tc_readl(&tr->MAC_Ctl) & MAC_Reset) { + if (i++ > 100) { + printk(KERN_ERR "%s: MAC reset failed.\n", dev->name); + break; + } + mdelay(1); + } + tc_writel(0, &tr->MAC_Ctl); + + /* initialize registers to default value */ + tc_writel(0, &tr->DMA_Ctl); + tc_writel(0, &tr->TxThrsh); + tc_writel(0, &tr->TxPollCtr); + tc_writel(0, &tr->RxFragSize); + tc_writel(0, &tr->Int_En); + tc_writel(0, &tr->FDA_Bas); + tc_writel(0, &tr->FDA_Lim); + tc_writel(0xffffffff, &tr->Int_Src); /* Write 1 to clear */ + tc_writel(0, &tr->CAM_Ctl); + tc_writel(0, &tr->Tx_Ctl); + tc_writel(0, &tr->Rx_Ctl); + tc_writel(0, &tr->CAM_Ena); + (void)tc_readl(&tr->Miss_Cnt); /* Read to clear */ + + /* initialize internal SRAM */ + tc_writel(DMA_TestMode, &tr->DMA_Ctl); + for (i = 0; i < 0x1000; i += 4) { + tc_writel(i, &tr->CAM_Adr); + tc_writel(0, &tr->CAM_Data); + } + tc_writel(0, &tr->DMA_Ctl); +} + +static void tc35815_chip_init(struct net_device *dev) +{ + struct tc35815_local *lp = netdev_priv(dev); + struct tc35815_regs __iomem *tr = + (struct tc35815_regs __iomem *)dev->base_addr; + unsigned long txctl = TX_CTL_CMD; + + /* load station address to CAM */ + tc35815_set_cam_entry(dev, CAM_ENTRY_SOURCE, dev->dev_addr); + + /* Enable CAM (broadcast and unicast) */ + tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena); + tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl); + + /* Use DMA_RxAlign_2 to make IP header 4-byte aligned. */ + if (HAVE_DMA_RXALIGN(lp)) + tc_writel(DMA_BURST_SIZE | DMA_RxAlign_2, &tr->DMA_Ctl); + else + tc_writel(DMA_BURST_SIZE, &tr->DMA_Ctl); + tc_writel(0, &tr->TxPollCtr); /* Batch mode */ + tc_writel(TX_THRESHOLD, &tr->TxThrsh); + tc_writel(INT_EN_CMD, &tr->Int_En); + + /* set queues */ + tc_writel(fd_virt_to_bus(lp, lp->rfd_base), &tr->FDA_Bas); + tc_writel((unsigned long)lp->rfd_limit - (unsigned long)lp->rfd_base, + &tr->FDA_Lim); + /* + * Activation method: + * First, enable the MAC Transmitter and the DMA Receive circuits. + * Then enable the DMA Transmitter and the MAC Receive circuits. + */ + tc_writel(fd_virt_to_bus(lp, lp->fbl_ptr), &tr->BLFrmPtr); /* start DMA receiver */ + tc_writel(RX_CTL_CMD, &tr->Rx_Ctl); /* start MAC receiver */ + + /* start MAC transmitter */ + /* TX4939 does not have EnLCarr */ + if (lp->chiptype == TC35815_TX4939) + txctl &= ~Tx_EnLCarr; + /* WORKAROUND: ignore LostCrS in full duplex operation */ + if (!lp->phy_dev || !lp->link || lp->duplex == DUPLEX_FULL) + txctl &= ~Tx_EnLCarr; + tc_writel(txctl, &tr->Tx_Ctl); +} + +#ifdef CONFIG_PM +static int tc35815_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct net_device *dev = pci_get_drvdata(pdev); + struct tc35815_local *lp = netdev_priv(dev); + unsigned long flags; + + pci_save_state(pdev); + if (!netif_running(dev)) + return 0; + netif_device_detach(dev); + if (lp->phy_dev) + phy_stop(lp->phy_dev); + spin_lock_irqsave(&lp->lock, flags); + tc35815_chip_reset(dev); + spin_unlock_irqrestore(&lp->lock, flags); + pci_set_power_state(pdev, PCI_D3hot); + return 0; +} + +static int tc35815_resume(struct pci_dev *pdev) +{ + struct net_device *dev = pci_get_drvdata(pdev); + struct tc35815_local *lp = netdev_priv(dev); + + pci_restore_state(pdev); + if (!netif_running(dev)) + return 0; + pci_set_power_state(pdev, PCI_D0); + tc35815_restart(dev); + netif_carrier_off(dev); + if (lp->phy_dev) + phy_start(lp->phy_dev); + netif_device_attach(dev); + return 0; +} +#endif /* CONFIG_PM */ + +static struct pci_driver tc35815_pci_driver = { + .name = MODNAME, + .id_table = tc35815_pci_tbl, + .probe = tc35815_init_one, + .remove = __devexit_p(tc35815_remove_one), +#ifdef CONFIG_PM + .suspend = tc35815_suspend, + .resume = tc35815_resume, +#endif +}; + +module_param_named(speed, options.speed, int, 0); +MODULE_PARM_DESC(speed, "0:auto, 10:10Mbps, 100:100Mbps"); +module_param_named(duplex, options.duplex, int, 0); +MODULE_PARM_DESC(duplex, "0:auto, 1:half, 2:full"); + +static int __init tc35815_init_module(void) +{ + return pci_register_driver(&tc35815_pci_driver); +} + +static void __exit tc35815_cleanup_module(void) +{ + pci_unregister_driver(&tc35815_pci_driver); +} + +module_init(tc35815_init_module); +module_exit(tc35815_cleanup_module); + +MODULE_DESCRIPTION("TOSHIBA TC35815 PCI 10M/100M Ethernet driver"); +MODULE_LICENSE("GPL"); |