drivers/net/ethernet/toshiba/tc35815.c

   1 /*
   2  * tc35815.c: A TOSHIBA TC35815CF PCI 10/100Mbps ethernet driver for linux.
   3  *
   4  * Based on skelton.c by Donald Becker.
   5  *
   6  * This driver is a replacement of older and less maintained version.
   7  * This is a header of the older version:
   8  *      -----<snip>-----
   9  *      Copyright 2001 MontaVista Software Inc.
  10  *      Author: MontaVista Software, Inc.
  11  *              ahennessy@mvista.com
  12  *      Copyright (C) 2000-2001 Toshiba Corporation
  13  *      static const char *version =
  14  *              "tc35815.c:v0.00 26/07/2000 by Toshiba Corporation\n";
  15  *      -----<snip>-----
  16  *
  17  * This file is subject to the terms and conditions of the GNU General Public
  18  * License.  See the file "COPYING" in the main directory of this archive
  19  * for more details.
  20  *
  21  * (C) Copyright TOSHIBA CORPORATION 2004-2005
  22  * All Rights Reserved.
  23  */
  24
  25 #define DRV_VERSION     "1.39"
  26 static const char *version = "tc35815.c:v" DRV_VERSION "\n";
  27 #define MODNAME                 "tc35815"
  28
  29 #include <linux/module.h>
  30 #include <linux/kernel.h>
  31 #include <linux/types.h>
  32 #include <linux/fcntl.h>
  33 #include <linux/interrupt.h>
  34 #include <linux/ioport.h>
  35 #include <linux/in.h>
  36 #include <linux/if_vlan.h>
  37 #include <linux/slab.h>
  38 #include <linux/string.h>
  39 #include <linux/spinlock.h>
  40 #include <linux/errno.h>
  41 #include <linux/netdevice.h>
  42 #include <linux/etherdevice.h>
  43 #include <linux/skbuff.h>
  44 #include <linux/delay.h>
  45 #include <linux/pci.h>
  46 #include <linux/phy.h>
  47 #include <linux/workqueue.h>
  48 #include <linux/platform_device.h>
  49 #include <linux/prefetch.h>
  50 #include <asm/io.h>
  51 #include <asm/byteorder.h>
  52
  53 enum tc35815_chiptype {
  54         TC35815CF = 0,
  55         TC35815_NWU,
  56         TC35815_TX4939,
  57 };
  58
  59 /* indexed by tc35815_chiptype, above */
  60 static const struct {
  61         const char *name;
  62 } chip_info[] = {
  63         { "TOSHIBA TC35815CF 10/100BaseTX" },
  64         { "TOSHIBA TC35815 with Wake on LAN" },
  65         { "TOSHIBA TC35815/TX4939" },
  66 };
  67
  68 static const struct pci_device_id tc35815_pci_tbl[] = {
  69         {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815CF), .driver_data = TC35815CF },
  70         {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815_NWU), .driver_data = TC35815_NWU },
  71         {PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC35815_TX4939), .driver_data = TC35815_TX4939 },
  72         {0,}
  73 };
  74 MODULE_DEVICE_TABLE(pci, tc35815_pci_tbl);
  75
  76 /* see MODULE_PARM_DESC */
  77 static struct tc35815_options {
  78         int speed;
  79         int duplex;
  80 } options;
  81
  82 /*
  83  * Registers
  84  */
  85 struct tc35815_regs {
  86         __u32 DMA_Ctl;          /* 0x00 */
  87         __u32 TxFrmPtr;
  88         __u32 TxThrsh;
  89         __u32 TxPollCtr;
  90         __u32 BLFrmPtr;
  91         __u32 RxFragSize;
  92         __u32 Int_En;
  93         __u32 FDA_Bas;
  94         __u32 FDA_Lim;          /* 0x20 */
  95         __u32 Int_Src;
  96         __u32 unused0[2];
  97         __u32 PauseCnt;
  98         __u32 RemPauCnt;
  99         __u32 TxCtlFrmStat;
 100         __u32 unused1;
 101         __u32 MAC_Ctl;          /* 0x40 */
 102         __u32 CAM_Ctl;
 103         __u32 Tx_Ctl;
 104         __u32 Tx_Stat;
 105         __u32 Rx_Ctl;
 106         __u32 Rx_Stat;
 107         __u32 MD_Data;
 108         __u32 MD_CA;
 109         __u32 CAM_Adr;          /* 0x60 */
 110         __u32 CAM_Data;
 111         __u32 CAM_Ena;
 112         __u32 PROM_Ctl;
 113         __u32 PROM_Data;
 114         __u32 Algn_Cnt;
 115         __u32 CRC_Cnt;
 116         __u32 Miss_Cnt;
 117 };
 118
 119 /*
 120  * Bit assignments
 121  */
 122 /* DMA_Ctl bit assign ------------------------------------------------------- */
 123 #define DMA_RxAlign            0x00c00000 /* 1:Reception Alignment           */
 124 #define DMA_RxAlign_1          0x00400000
 125 #define DMA_RxAlign_2          0x00800000
 126 #define DMA_RxAlign_3          0x00c00000
 127 #define DMA_M66EnStat          0x00080000 /* 1:66MHz Enable State            */
 128 #define DMA_IntMask            0x00040000 /* 1:Interrupt mask                */
 129 #define DMA_SWIntReq           0x00020000 /* 1:Software Interrupt request    */
 130 #define DMA_TxWakeUp           0x00010000 /* 1:Transmit Wake Up              */
 131 #define DMA_RxBigE             0x00008000 /* 1:Receive Big Endian            */
 132 #define DMA_TxBigE             0x00004000 /* 1:Transmit Big Endian           */
 133 #define DMA_TestMode           0x00002000 /* 1:Test Mode                     */
 134 #define DMA_PowrMgmnt          0x00001000 /* 1:Power Management              */
 135 #define DMA_DmBurst_Mask       0x000001fc /* DMA Burst size                  */
 136
 137 /* RxFragSize bit assign ---------------------------------------------------- */
 138 #define RxFrag_EnPack          0x00008000 /* 1:Enable Packing                */
 139 #define RxFrag_MinFragMask     0x00000ffc /* Minimum Fragment                */
 140
 141 /* MAC_Ctl bit assign ------------------------------------------------------- */
 142 #define MAC_Link10             0x00008000 /* 1:Link Status 10Mbits           */
 143 #define MAC_EnMissRoll         0x00002000 /* 1:Enable Missed Roll            */
 144 #define MAC_MissRoll           0x00000400 /* 1:Missed Roll                   */
 145 #define MAC_Loop10             0x00000080 /* 1:Loop 10 Mbps                  */
 146 #define MAC_Conn_Auto          0x00000000 /*00:Connection mode (Automatic)   */
 147 #define MAC_Conn_10M           0x00000020 /*01:                (10Mbps endec)*/
 148 #define MAC_Conn_Mll           0x00000040 /*10:                (Mll clock)   */
 149 #define MAC_MacLoop            0x00000010 /* 1:MAC Loopback                  */
 150 #define MAC_FullDup            0x00000008 /* 1:Full Duplex 0:Half Duplex     */
 151 #define MAC_Reset              0x00000004 /* 1:Software Reset                */
 152 #define MAC_HaltImm            0x00000002 /* 1:Halt Immediate                */
 153 #define MAC_HaltReq            0x00000001 /* 1:Halt request                  */
 154
 155 /* PROM_Ctl bit assign ------------------------------------------------------ */
 156 #define PROM_Busy              0x00008000 /* 1:Busy (Start Operation)        */
 157 #define PROM_Read              0x00004000 /*10:Read operation                */
 158 #define PROM_Write             0x00002000 /*01:Write operation               */
 159 #define PROM_Erase             0x00006000 /*11:Erase operation               */
 160                                           /*00:Enable or Disable Writting,   */
 161                                           /*      as specified in PROM_Addr. */
 162 #define PROM_Addr_Ena          0x00000030 /*11xxxx:PROM Write enable         */
 163                                           /*00xxxx:           disable        */
 164
 165 /* CAM_Ctl bit assign ------------------------------------------------------- */
 166 #define CAM_CompEn             0x00000010 /* 1:CAM Compare Enable            */
 167 #define CAM_NegCAM             0x00000008 /* 1:Reject packets CAM recognizes,*/
 168                                           /*                    accept other */
 169 #define CAM_BroadAcc           0x00000004 /* 1:Broadcast assept              */
 170 #define CAM_GroupAcc           0x00000002 /* 1:Multicast assept              */
 171 #define CAM_StationAcc         0x00000001 /* 1:unicast accept                */
 172
 173 /* CAM_Ena bit assign ------------------------------------------------------- */
 174 #define CAM_ENTRY_MAX                  21   /* CAM Data entry max count      */
 175 #define CAM_Ena_Mask ((1<<CAM_ENTRY_MAX)-1) /* CAM Enable bits (Max 21bits)  */
 176 #define CAM_Ena_Bit(index)      (1 << (index))
 177 #define CAM_ENTRY_DESTINATION   0
 178 #define CAM_ENTRY_SOURCE        1
 179 #define CAM_ENTRY_MACCTL        20
 180
 181 /* Tx_Ctl bit assign -------------------------------------------------------- */
 182 #define Tx_En                  0x00000001 /* 1:Transmit enable               */
 183 #define Tx_TxHalt              0x00000002 /* 1:Transmit Halt Request         */
 184 #define Tx_NoPad               0x00000004 /* 1:Suppress Padding              */
 185 #define Tx_NoCRC               0x00000008 /* 1:Suppress Padding              */
 186 #define Tx_FBack               0x00000010 /* 1:Fast Back-off                 */
 187 #define Tx_EnUnder             0x00000100 /* 1:Enable Underrun               */
 188 #define Tx_EnExDefer           0x00000200 /* 1:Enable Excessive Deferral     */
 189 #define Tx_EnLCarr             0x00000400 /* 1:Enable Lost Carrier           */
 190 #define Tx_EnExColl            0x00000800 /* 1:Enable Excessive Collision    */
 191 #define Tx_EnLateColl          0x00001000 /* 1:Enable Late Collision         */
 192 #define Tx_EnTxPar             0x00002000 /* 1:Enable Transmit Parity        */
 193 #define Tx_EnComp              0x00004000 /* 1:Enable Completion             */
 194
 195 /* Tx_Stat bit assign ------------------------------------------------------- */
 196 #define Tx_TxColl_MASK         0x0000000F /* Tx Collision Count              */
 197 #define Tx_ExColl              0x00000010 /* Excessive Collision             */
 198 #define Tx_TXDefer             0x00000020 /* Transmit Defered                */
 199 #define Tx_Paused              0x00000040 /* Transmit Paused                 */
 200 #define Tx_IntTx               0x00000080 /* Interrupt on Tx                 */
 201 #define Tx_Under               0x00000100 /* Underrun                        */
 202 #define Tx_Defer               0x00000200 /* Deferral                        */
 203 #define Tx_NCarr               0x00000400 /* No Carrier                      */
 204 #define Tx_10Stat              0x00000800 /* 10Mbps Status                   */
 205 #define Tx_LateColl            0x00001000 /* Late Collision                  */
 206 #define Tx_TxPar               0x00002000 /* Tx Parity Error                 */
 207 #define Tx_Comp                0x00004000 /* Completion                      */
 208 #define Tx_Halted              0x00008000 /* Tx Halted                       */
 209 #define Tx_SQErr               0x00010000 /* Signal Quality Error(SQE)       */
 210
 211 /* Rx_Ctl bit assign -------------------------------------------------------- */
 212 #define Rx_EnGood              0x00004000 /* 1:Enable Good                   */
 213 #define Rx_EnRxPar             0x00002000 /* 1:Enable Receive Parity         */
 214 #define Rx_EnLongErr           0x00000800 /* 1:Enable Long Error             */
 215 #define Rx_EnOver              0x00000400 /* 1:Enable OverFlow               */
 216 #define Rx_EnCRCErr            0x00000200 /* 1:Enable CRC Error              */
 217 #define Rx_EnAlign             0x00000100 /* 1:Enable Alignment              */
 218 #define Rx_IgnoreCRC           0x00000040 /* 1:Ignore CRC Value              */
 219 #define Rx_StripCRC            0x00000010 /* 1:Strip CRC Value               */
 220 #define Rx_ShortEn             0x00000008 /* 1:Short Enable                  */
 221 #define Rx_LongEn              0x00000004 /* 1:Long Enable                   */
 222 #define Rx_RxHalt              0x00000002 /* 1:Receive Halt Request          */
 223 #define Rx_RxEn                0x00000001 /* 1:Receive Intrrupt Enable       */
 224
 225 /* Rx_Stat bit assign ------------------------------------------------------- */
 226 #define Rx_Halted              0x00008000 /* Rx Halted                       */
 227 #define Rx_Good                0x00004000 /* Rx Good                         */
 228 #define Rx_RxPar               0x00002000 /* Rx Parity Error                 */
 229 #define Rx_TypePkt             0x00001000 /* Rx Type Packet                  */
 230 #define Rx_LongErr             0x00000800 /* Rx Long Error                   */
 231 #define Rx_Over                0x00000400 /* Rx Overflow                     */
 232 #define Rx_CRCErr              0x00000200 /* Rx CRC Error                    */
 233 #define Rx_Align               0x00000100 /* Rx Alignment Error              */
 234 #define Rx_10Stat              0x00000080 /* Rx 10Mbps Status                */
 235 #define Rx_IntRx               0x00000040 /* Rx Interrupt                    */
 236 #define Rx_CtlRecd             0x00000020 /* Rx Control Receive              */
 237 #define Rx_InLenErr            0x00000010 /* Rx In Range Frame Length Error  */
 238
 239 #define Rx_Stat_Mask           0x0000FFF0 /* Rx All Status Mask              */
 240
 241 /* Int_En bit assign -------------------------------------------------------- */
 242 #define Int_NRAbtEn            0x00000800 /* 1:Non-recoverable Abort Enable  */
 243 #define Int_TxCtlCmpEn         0x00000400 /* 1:Transmit Ctl Complete Enable  */
 244 #define Int_DmParErrEn         0x00000200 /* 1:DMA Parity Error Enable       */
 245 #define Int_DParDEn            0x00000100 /* 1:Data Parity Error Enable      */
 246 #define Int_EarNotEn           0x00000080 /* 1:Early Notify Enable           */
 247 #define Int_DParErrEn          0x00000040 /* 1:Detected Parity Error Enable  */
 248 #define Int_SSysErrEn          0x00000020 /* 1:Signalled System Error Enable */
 249 #define Int_RMasAbtEn          0x00000010 /* 1:Received Master Abort Enable  */
 250 #define Int_RTargAbtEn         0x00000008 /* 1:Received Target Abort Enable  */
 251 #define Int_STargAbtEn         0x00000004 /* 1:Signalled Target Abort Enable */
 252 #define Int_BLExEn             0x00000002 /* 1:Buffer List Exhausted Enable  */
 253 #define Int_FDAExEn            0x00000001 /* 1:Free Descriptor Area          */
 254                                           /*               Exhausted Enable  */
 255
 256 /* Int_Src bit assign ------------------------------------------------------- */
 257 #define Int_NRabt              0x00004000 /* 1:Non Recoverable error         */
 258 #define Int_DmParErrStat       0x00002000 /* 1:DMA Parity Error & Clear      */
 259 #define Int_BLEx               0x00001000 /* 1:Buffer List Empty & Clear     */
 260 #define Int_FDAEx              0x00000800 /* 1:FDA Empty & Clear             */
 261 #define Int_IntNRAbt           0x00000400 /* 1:Non Recoverable Abort         */
 262 #define Int_IntCmp             0x00000200 /* 1:MAC control packet complete   */
 263 #define Int_IntExBD            0x00000100 /* 1:Interrupt Extra BD & Clear    */
 264 #define Int_DmParErr           0x00000080 /* 1:DMA Parity Error & Clear      */
 265 #define Int_IntEarNot          0x00000040 /* 1:Receive Data write & Clear    */
 266 #define Int_SWInt              0x00000020 /* 1:Software request & Clear      */
 267 #define Int_IntBLEx            0x00000010 /* 1:Buffer List Empty & Clear     */
 268 #define Int_IntFDAEx           0x00000008 /* 1:FDA Empty & Clear             */
 269 #define Int_IntPCI             0x00000004 /* 1:PCI controller & Clear        */
 270 #define Int_IntMacRx           0x00000002 /* 1:Rx controller & Clear         */
 271 #define Int_IntMacTx           0x00000001 /* 1:Tx controller & Clear         */
 272
 273 /* MD_CA bit assign --------------------------------------------------------- */
 274 #define MD_CA_PreSup           0x00001000 /* 1:Preamble Suppress                     */
 275 #define MD_CA_Busy             0x00000800 /* 1:Busy (Start Operation)        */
 276 #define MD_CA_Wr               0x00000400 /* 1:Write 0:Read                  */
 277
 278
 279 /*
 280  * Descriptors
 281  */
 282
 283 /* Frame descriptor */
 284 struct FDesc {
 285         volatile __u32 FDNext;
 286         volatile __u32 FDSystem;
 287         volatile __u32 FDStat;
 288         volatile __u32 FDCtl;
 289 };
 290
 291 /* Buffer descriptor */
 292 struct BDesc {
 293         volatile __u32 BuffData;
 294         volatile __u32 BDCtl;
 295 };
 296
 297 #define FD_ALIGN        16
 298
 299 /* Frame Descriptor bit assign ---------------------------------------------- */
 300 #define FD_FDLength_MASK       0x0000FFFF /* Length MASK                     */
 301 #define FD_BDCnt_MASK          0x001F0000 /* BD count MASK in FD             */
 302 #define FD_FrmOpt_MASK         0x7C000000 /* Frame option MASK               */
 303 #define FD_FrmOpt_BigEndian    0x40000000 /* Tx/Rx */
 304 #define FD_FrmOpt_IntTx        0x20000000 /* Tx only */
 305 #define FD_FrmOpt_NoCRC        0x10000000 /* Tx only */
 306 #define FD_FrmOpt_NoPadding    0x08000000 /* Tx only */
 307 #define FD_FrmOpt_Packing      0x04000000 /* Rx only */
 308 #define FD_CownsFD             0x80000000 /* FD Controller owner bit         */
 309 #define FD_Next_EOL            0x00000001 /* FD EOL indicator                */
 310 #define FD_BDCnt_SHIFT         16
 311
 312 /* Buffer Descriptor bit assign --------------------------------------------- */
 313 #define BD_BuffLength_MASK     0x0000FFFF /* Receive Data Size               */
 314 #define BD_RxBDID_MASK         0x00FF0000 /* BD ID Number MASK               */
 315 #define BD_RxBDSeqN_MASK       0x7F000000 /* Rx BD Sequence Number           */
 316 #define BD_CownsBD             0x80000000 /* BD Controller owner bit         */
 317 #define BD_RxBDID_SHIFT        16
 318 #define BD_RxBDSeqN_SHIFT      24
 319
 320
 321 /* Some useful constants. */
 322
 323 #define TX_CTL_CMD      (Tx_EnTxPar | Tx_EnLateColl | \
 324         Tx_EnExColl | Tx_EnLCarr | Tx_EnExDefer | Tx_EnUnder | \
 325         Tx_En)  /* maybe  0x7b01 */
 326 /* Do not use Rx_StripCRC -- it causes trouble on BLEx/FDAEx condition */
 327 #define RX_CTL_CMD      (Rx_EnGood | Rx_EnRxPar | Rx_EnLongErr | Rx_EnOver \
 328         | Rx_EnCRCErr | Rx_EnAlign | Rx_RxEn) /* maybe 0x6f01 */
 329 #define INT_EN_CMD  (Int_NRAbtEn | \
 330         Int_DmParErrEn | Int_DParDEn | Int_DParErrEn | \
 331         Int_SSysErrEn  | Int_RMasAbtEn | Int_RTargAbtEn | \
 332         Int_STargAbtEn | \
 333         Int_BLExEn  | Int_FDAExEn) /* maybe 0xb7f*/
 334 #define DMA_CTL_CMD     DMA_BURST_SIZE
 335 #define HAVE_DMA_RXALIGN(lp)    likely((lp)->chiptype != TC35815CF)
 336
 337 /* Tuning parameters */
 338 #define DMA_BURST_SIZE  32
 339 #define TX_THRESHOLD    1024
 340 /* used threshold with packet max byte for low pci transfer ability.*/
 341 #define TX_THRESHOLD_MAX 1536
 342 /* setting threshold max value when overrun error occurred this count. */
 343 #define TX_THRESHOLD_KEEP_LIMIT 10
 344
 345 /* 16 + RX_BUF_NUM * 8 + RX_FD_NUM * 16 + TX_FD_NUM * 32 <= PAGE_SIZE*FD_PAGE_NUM */
 346 #define FD_PAGE_NUM 4
 347 #define RX_BUF_NUM      128     /* < 256 */
 348 #define RX_FD_NUM       256     /* >= 32 */
 349 #define TX_FD_NUM       128
 350 #if RX_CTL_CMD & Rx_LongEn
 351 #define RX_BUF_SIZE     PAGE_SIZE
 352 #elif RX_CTL_CMD & Rx_StripCRC
 353 #define RX_BUF_SIZE     \
 354         L1_CACHE_ALIGN(ETH_FRAME_LEN + VLAN_HLEN + NET_IP_ALIGN)
 355 #else
 356 #define RX_BUF_SIZE     \
 357         L1_CACHE_ALIGN(ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN + NET_IP_ALIGN)
 358 #endif
 359 #define RX_FD_RESERVE   (2 / 2) /* max 2 BD per RxFD */
 360 #define NAPI_WEIGHT     16
 361
 362 struct TxFD {
 363         struct FDesc fd;
 364         struct BDesc bd;
 365         struct BDesc unused;
 366 };
 367
 368 struct RxFD {
 369         struct FDesc fd;
 370         struct BDesc bd[0];     /* variable length */
 371 };
 372
 373 struct FrFD {
 374         struct FDesc fd;
 375         struct BDesc bd[RX_BUF_NUM];
 376 };
 377
 378
 379 #define tc_readl(addr)  ioread32(addr)
 380 #define tc_writel(d, addr)      iowrite32(d, addr)
 381
 382 #define TC35815_TX_TIMEOUT  msecs_to_jiffies(400)
 383
 384 /* Information that need to be kept for each controller. */
 385 struct tc35815_local {
 386         struct pci_dev *pci_dev;
 387
 388         struct net_device *dev;
 389         struct napi_struct napi;
 390
 391         /* statistics */
 392         struct {
 393                 int max_tx_qlen;
 394                 int tx_ints;
 395                 int rx_ints;
 396                 int tx_underrun;
 397         } lstats;
 398
 399         /* Tx control lock.  This protects the transmit buffer ring
 400          * state along with the "tx full" state of the driver.  This
 401          * means all netif_queue flow control actions are protected
 402          * by this lock as well.
 403          */
 404         spinlock_t lock;
 405         spinlock_t rx_lock;
 406
 407         struct mii_bus *mii_bus;
 408         int duplex;
 409         int speed;
 410         int link;
 411         struct work_struct restart_work;
 412
 413         /*
 414          * Transmitting: Batch Mode.
 415          *      1 BD in 1 TxFD.
 416          * Receiving: Non-Packing Mode.
 417          *      1 circular FD for Free Buffer List.
 418          *      RX_BUF_NUM BD in Free Buffer FD.
 419          *      One Free Buffer BD has ETH_FRAME_LEN data buffer.
 420          */
 421         void *fd_buf;   /* for TxFD, RxFD, FrFD */
 422         dma_addr_t fd_buf_dma;
 423         struct TxFD *tfd_base;
 424         unsigned int tfd_start;
 425         unsigned int tfd_end;
 426         struct RxFD *rfd_base;
 427         struct RxFD *rfd_limit;
 428         struct RxFD *rfd_cur;
 429         struct FrFD *fbl_ptr;
 430         unsigned int fbl_count;
 431         struct {
 432                 struct sk_buff *skb;
 433                 dma_addr_t skb_dma;
 434         } tx_skbs[TX_FD_NUM], rx_skbs[RX_BUF_NUM];
 435         u32 msg_enable;
 436         enum tc35815_chiptype chiptype;
 437 };
 438
 439 static inline dma_addr_t fd_virt_to_bus(struct tc35815_local *lp, void *virt)
 440 {
 441         return lp->fd_buf_dma + ((u8 *)virt - (u8 *)lp->fd_buf);
 442 }
 443 #ifdef DEBUG
 444 static inline void *fd_bus_to_virt(struct tc35815_local *lp, dma_addr_t bus)
 445 {
 446         return (void *)((u8 *)lp->fd_buf + (bus - lp->fd_buf_dma));
 447 }
 448 #endif
 449 static struct sk_buff *alloc_rxbuf_skb(struct net_device *dev,
 450                                        struct pci_dev *hwdev,
 451                                        dma_addr_t *dma_handle)
 452 {
 453         struct sk_buff *skb;
 454         skb = netdev_alloc_skb(dev, RX_BUF_SIZE);
 455         if (!skb)
 456                 return NULL;
 457         *dma_handle = pci_map_single(hwdev, skb->data, RX_BUF_SIZE,
 458                                      PCI_DMA_FROMDEVICE);
 459         if (pci_dma_mapping_error(hwdev, *dma_handle)) {
 460                 dev_kfree_skb_any(skb);
 461                 return NULL;
 462         }
 463         skb_reserve(skb, 2);    /* make IP header 4byte aligned */
 464         return skb;
 465 }
 466
 467 static void free_rxbuf_skb(struct pci_dev *hwdev, struct sk_buff *skb, dma_addr_t dma_handle)
 468 {
 469         pci_unmap_single(hwdev, dma_handle, RX_BUF_SIZE,
 470                          PCI_DMA_FROMDEVICE);
 471         dev_kfree_skb_any(skb);
 472 }
 473
 474 /* Index to functions, as function prototypes. */
 475
 476 static int      tc35815_open(struct net_device *dev);
 477 static netdev_tx_t      tc35815_send_packet(struct sk_buff *skb,
 478                                             struct net_device *dev);
 479 static irqreturn_t      tc35815_interrupt(int irq, void *dev_id);
 480 static int      tc35815_rx(struct net_device *dev, int limit);
 481 static int      tc35815_poll(struct napi_struct *napi, int budget);
 482 static void     tc35815_txdone(struct net_device *dev);
 483 static int      tc35815_close(struct net_device *dev);
 484 static struct   net_device_stats *tc35815_get_stats(struct net_device *dev);
 485 static void     tc35815_set_multicast_list(struct net_device *dev);
 486 static void     tc35815_tx_timeout(struct net_device *dev);
 487 static int      tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 488 #ifdef CONFIG_NET_POLL_CONTROLLER
 489 static void     tc35815_poll_controller(struct net_device *dev);
 490 #endif
 491 static const struct ethtool_ops tc35815_ethtool_ops;
 492
 493 /* Example routines you must write ;->. */
 494 static void     tc35815_chip_reset(struct net_device *dev);
 495 static void     tc35815_chip_init(struct net_device *dev);
 496
 497 #ifdef DEBUG
 498 static void     panic_queues(struct net_device *dev);
 499 #endif
 500
 501 static void tc35815_restart_work(struct work_struct *work);
 502
 503 static int tc_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
 504 {
 505         struct net_device *dev = bus->priv;
 506         struct tc35815_regs __iomem *tr =
 507                 (struct tc35815_regs __iomem *)dev->base_addr;
 508         unsigned long timeout = jiffies + HZ;
 509
 510         tc_writel(MD_CA_Busy | (mii_id << 5) | (regnum & 0x1f), &tr->MD_CA);
 511         udelay(12); /* it takes 32 x 400ns at least */
 512         while (tc_readl(&tr->MD_CA) & MD_CA_Busy) {
 513                 if (time_after(jiffies, timeout))
 514                         return -EIO;
 515                 cpu_relax();
 516         }
 517         return tc_readl(&tr->MD_Data) & 0xffff;
 518 }
 519
 520 static int tc_mdio_write(struct mii_bus *bus, int mii_id, int regnum, u16 val)
 521 {
 522         struct net_device *dev = bus->priv;
 523         struct tc35815_regs __iomem *tr =
 524                 (struct tc35815_regs __iomem *)dev->base_addr;
 525         unsigned long timeout = jiffies + HZ;
 526
 527         tc_writel(val, &tr->MD_Data);
 528         tc_writel(MD_CA_Busy | MD_CA_Wr | (mii_id << 5) | (regnum & 0x1f),
 529                   &tr->MD_CA);
 530         udelay(12); /* it takes 32 x 400ns at least */
 531         while (tc_readl(&tr->MD_CA) & MD_CA_Busy) {
 532                 if (time_after(jiffies, timeout))
 533                         return -EIO;
 534                 cpu_relax();
 535         }
 536         return 0;
 537 }
 538
 539 static void tc_handle_link_change(struct net_device *dev)
 540 {
 541         struct tc35815_local *lp = netdev_priv(dev);
 542         struct phy_device *phydev = dev->phydev;
 543         unsigned long flags;
 544         int status_change = 0;
 545
 546         spin_lock_irqsave(&lp->lock, flags);
 547         if (phydev->link &&
 548             (lp->speed != phydev->speed || lp->duplex != phydev->duplex)) {
 549                 struct tc35815_regs __iomem *tr =
 550                         (struct tc35815_regs __iomem *)dev->base_addr;
 551                 u32 reg;
 552
 553                 reg = tc_readl(&tr->MAC_Ctl);
 554                 reg |= MAC_HaltReq;
 555                 tc_writel(reg, &tr->MAC_Ctl);
 556                 if (phydev->duplex == DUPLEX_FULL)
 557                         reg |= MAC_FullDup;
 558                 else
 559                         reg &= ~MAC_FullDup;
 560                 tc_writel(reg, &tr->MAC_Ctl);
 561                 reg &= ~MAC_HaltReq;
 562                 tc_writel(reg, &tr->MAC_Ctl);
 563
 564                 /*
 565                  * TX4939 PCFG.SPEEDn bit will be changed on
 566                  * NETDEV_CHANGE event.
 567                  */
 568                 /*
 569                  * WORKAROUND: enable LostCrS only if half duplex
 570                  * operation.
 571                  * (TX4939 does not have EnLCarr)
 572                  */
 573                 if (phydev->duplex == DUPLEX_HALF &&
 574                     lp->chiptype != TC35815_TX4939)
 575                         tc_writel(tc_readl(&tr->Tx_Ctl) | Tx_EnLCarr,
 576                                   &tr->Tx_Ctl);
 577
 578                 lp->speed = phydev->speed;
 579                 lp->duplex = phydev->duplex;
 580                 status_change = 1;
 581         }
 582
 583         if (phydev->link != lp->link) {
 584                 if (phydev->link) {
 585                         /* delayed promiscuous enabling */
 586                         if (dev->flags & IFF_PROMISC)
 587                                 tc35815_set_multicast_list(dev);
 588                 } else {
 589                         lp->speed = 0;
 590                         lp->duplex = -1;
 591                 }
 592                 lp->link = phydev->link;
 593
 594                 status_change = 1;
 595         }
 596         spin_unlock_irqrestore(&lp->lock, flags);
 597
 598         if (status_change && netif_msg_link(lp)) {
 599                 phy_print_status(phydev);
 600                 pr_debug("%s: MII BMCR %04x BMSR %04x LPA %04x\n",
 601                          dev->name,
 602                          phy_read(phydev, MII_BMCR),
 603                          phy_read(phydev, MII_BMSR),
 604                          phy_read(phydev, MII_LPA));
 605         }
 606 }
 607
 608 static int tc_mii_probe(struct net_device *dev)
 609 {
 610         struct tc35815_local *lp = netdev_priv(dev);
 611         struct phy_device *phydev;
 612         u32 dropmask;
 613
 614         phydev = phy_find_first(lp->mii_bus);
 615         if (!phydev) {
 616                 printk(KERN_ERR "%s: no PHY found\n", dev->name);
 617                 return -ENODEV;
 618         }
 619
 620         /* attach the mac to the phy */
 621         phydev = phy_connect(dev, phydev_name(phydev),
 622                              &tc_handle_link_change,
 623                              lp->chiptype == TC35815_TX4939 ? PHY_INTERFACE_MODE_RMII : PHY_INTERFACE_MODE_MII);
 624         if (IS_ERR(phydev)) {
 625                 printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
 626                 return PTR_ERR(phydev);
 627         }
 628
 629         phy_attached_info(phydev);
 630
 631         /* mask with MAC supported features */
 632         phydev->supported &= PHY_BASIC_FEATURES;
 633         dropmask = 0;
 634         if (options.speed == 10)
 635                 dropmask |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
 636         else if (options.speed == 100)
 637                 dropmask |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
 638         if (options.duplex == 1)
 639                 dropmask |= SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Full;
 640         else if (options.duplex == 2)
 641                 dropmask |= SUPPORTED_10baseT_Half | SUPPORTED_100baseT_Half;
 642         phydev->supported &= ~dropmask;
 643         phydev->advertising = phydev->supported;
 644
 645         lp->link = 0;
 646         lp->speed = 0;
 647         lp->duplex = -1;
 648
 649         return 0;
 650 }
 651
 652 static int tc_mii_init(struct net_device *dev)
 653 {
 654         struct tc35815_local *lp = netdev_priv(dev);
 655         int err;
 656
 657         lp->mii_bus = mdiobus_alloc();
 658         if (lp->mii_bus == NULL) {
 659                 err = -ENOMEM;
 660                 goto err_out;
 661         }
 662
 663         lp->mii_bus->name = "tc35815_mii_bus";
 664         lp->mii_bus->read = tc_mdio_read;
 665         lp->mii_bus->write = tc_mdio_write;
 666         snprintf(lp->mii_bus->id, MII_BUS_ID_SIZE, "%x",
 667                  (lp->pci_dev->bus->number << 8) | lp->pci_dev->devfn);
 668         lp->mii_bus->priv = dev;
 669         lp->mii_bus->parent = &lp->pci_dev->dev;
 670         err = mdiobus_register(lp->mii_bus);
 671         if (err)
 672                 goto err_out_free_mii_bus;
 673         err = tc_mii_probe(dev);
 674         if (err)
 675                 goto err_out_unregister_bus;
 676         return 0;
 677
 678 err_out_unregister_bus:
 679         mdiobus_unregister(lp->mii_bus);
 680 err_out_free_mii_bus:
 681         mdiobus_free(lp->mii_bus);
 682 err_out:
 683         return err;
 684 }
 685
 686 #ifdef CONFIG_CPU_TX49XX
 687 /*
 688  * Find a platform_device providing a MAC address.  The platform code
 689  * should provide a "tc35815-mac" device with a MAC address in its
 690  * platform_data.
 691  */
 692 static int tc35815_mac_match(struct device *dev, void *data)
 693 {
 694         struct platform_device *plat_dev = to_platform_device(dev);
 695         struct pci_dev *pci_dev = data;
 696         unsigned int id = pci_dev->irq;
 697         return !strcmp(plat_dev->name, "tc35815-mac") && plat_dev->id == id;
 698 }
 699
 700 static int tc35815_read_plat_dev_addr(struct net_device *dev)
 701 {
 702         struct tc35815_local *lp = netdev_priv(dev);
 703         struct device *pd = bus_find_device(&platform_bus_type, NULL,
 704                                             lp->pci_dev, tc35815_mac_match);
 705         if (pd) {
 706                 if (pd->platform_data)
 707                         memcpy(dev->dev_addr, pd->platform_data, ETH_ALEN);
 708                 put_device(pd);
 709                 return is_valid_ether_addr(dev->dev_addr) ? 0 : -ENODEV;
 710         }
 711         return -ENODEV;
 712 }
 713 #else
 714 static int tc35815_read_plat_dev_addr(struct net_device *dev)
 715 {
 716         return -ENODEV;
 717 }
 718 #endif
 719
 720 static int tc35815_init_dev_addr(struct net_device *dev)
 721 {
 722         struct tc35815_regs __iomem *tr =
 723                 (struct tc35815_regs __iomem *)dev->base_addr;
 724         int i;
 725
 726         while (tc_readl(&tr->PROM_Ctl) & PROM_Busy)
 727                 ;
 728         for (i = 0; i < 6; i += 2) {
 729                 unsigned short data;
 730                 tc_writel(PROM_Busy | PROM_Read | (i / 2 + 2), &tr->PROM_Ctl);
 731                 while (tc_readl(&tr->PROM_Ctl) & PROM_Busy)
 732                         ;
 733                 data = tc_readl(&tr->PROM_Data);
 734                 dev->dev_addr[i] = data & 0xff;
 735                 dev->dev_addr[i+1] = data >> 8;
 736         }
 737         if (!is_valid_ether_addr(dev->dev_addr))
 738                 return tc35815_read_plat_dev_addr(dev);
 739         return 0;
 740 }
 741
 742 static const struct net_device_ops tc35815_netdev_ops = {
 743         .ndo_open               = tc35815_open,
 744         .ndo_stop               = tc35815_close,
 745         .ndo_start_xmit         = tc35815_send_packet,
 746         .ndo_get_stats          = tc35815_get_stats,
 747         .ndo_set_rx_mode        = tc35815_set_multicast_list,
 748         .ndo_tx_timeout         = tc35815_tx_timeout,
 749         .ndo_do_ioctl           = tc35815_ioctl,
 750         .ndo_validate_addr      = eth_validate_addr,
 751         .ndo_change_mtu         = eth_change_mtu,
 752         .ndo_set_mac_address    = eth_mac_addr,
 753 #ifdef CONFIG_NET_POLL_CONTROLLER
 754         .ndo_poll_controller    = tc35815_poll_controller,
 755 #endif
 756 };
 757
 758 static int tc35815_init_one(struct pci_dev *pdev,
 759                             const struct pci_device_id *ent)
 760 {
 761         void __iomem *ioaddr = NULL;
 762         struct net_device *dev;
 763         struct tc35815_local *lp;
 764         int rc;
 765
 766         static int printed_version;
 767         if (!printed_version++) {
 768                 printk(version);
 769                 dev_printk(KERN_DEBUG, &pdev->dev,
 770                            "speed:%d duplex:%d\n",
 771                            options.speed, options.duplex);
 772         }
 773
 774         if (!pdev->irq) {
 775                 dev_warn(&pdev->dev, "no IRQ assigned.\n");
 776                 return -ENODEV;
 777         }
 778
 779         /* dev zeroed in alloc_etherdev */
 780         dev = alloc_etherdev(sizeof(*lp));
 781         if (dev == NULL)
 782                 return -ENOMEM;
 783
 784         SET_NETDEV_DEV(dev, &pdev->dev);
 785         lp = netdev_priv(dev);
 786         lp->dev = dev;
 787
 788         /* enable device (incl. PCI PM wakeup), and bus-mastering */
 789         rc = pcim_enable_device(pdev);
 790         if (rc)
 791                 goto err_out;
 792         rc = pcim_iomap_regions(pdev, 1 << 1, MODNAME);
 793         if (rc)
 794                 goto err_out;
 795         pci_set_master(pdev);
 796         ioaddr = pcim_iomap_table(pdev)[1];
 797
 798         /* Initialize the device structure. */
 799         dev->netdev_ops = &tc35815_netdev_ops;
 800         dev->ethtool_ops = &tc35815_ethtool_ops;
 801         dev->watchdog_timeo = TC35815_TX_TIMEOUT;
 802         netif_napi_add(dev, &lp->napi, tc35815_poll, NAPI_WEIGHT);
 803
 804         dev->irq = pdev->irq;
 805         dev->base_addr = (unsigned long)ioaddr;
 806
 807         INIT_WORK(&lp->restart_work, tc35815_restart_work);
 808         spin_lock_init(&lp->lock);
 809         spin_lock_init(&lp->rx_lock);
 810         lp->pci_dev = pdev;
 811         lp->chiptype = ent->driver_data;
 812
 813         lp->msg_enable = NETIF_MSG_TX_ERR | NETIF_MSG_HW | NETIF_MSG_DRV | NETIF_MSG_LINK;
 814         pci_set_drvdata(pdev, dev);
 815
 816         /* Soft reset the chip. */
 817         tc35815_chip_reset(dev);
 818
 819         /* Retrieve the ethernet address. */
 820         if (tc35815_init_dev_addr(dev)) {
 821                 dev_warn(&pdev->dev, "not valid ether addr\n");
 822                 eth_hw_addr_random(dev);
 823         }
 824
 825         rc = register_netdev(dev);
 826         if (rc)
 827                 goto err_out;
 828
 829         printk(KERN_INFO "%s: %s at 0x%lx, %pM, IRQ %d\n",
 830                 dev->name,
 831                 chip_info[ent->driver_data].name,
 832                 dev->base_addr,
 833                 dev->dev_addr,
 834                 dev->irq);
 835
 836         rc = tc_mii_init(dev);
 837         if (rc)
 838                 goto err_out_unregister;
 839
 840         return 0;
 841
 842 err_out_unregister:
 843         unregister_netdev(dev);
 844 err_out:
 845         free_netdev(dev);
 846         return rc;
 847 }
 848
 849
 850 static void tc35815_remove_one(struct pci_dev *pdev)
 851 {
 852         struct net_device *dev = pci_get_drvdata(pdev);
 853         struct tc35815_local *lp = netdev_priv(dev);
 854
 855         phy_disconnect(dev->phydev);
 856         mdiobus_unregister(lp->mii_bus);
 857         mdiobus_free(lp->mii_bus);
 858         unregister_netdev(dev);
 859         free_netdev(dev);
 860 }
 861
 862 static int
 863 tc35815_init_queues(struct net_device *dev)
 864 {
 865         struct tc35815_local *lp = netdev_priv(dev);
 866         int i;
 867         unsigned long fd_addr;
 868
 869         if (!lp->fd_buf) {
 870                 BUG_ON(sizeof(struct FDesc) +
 871                        sizeof(struct BDesc) * RX_BUF_NUM +
 872                        sizeof(struct FDesc) * RX_FD_NUM +
 873                        sizeof(struct TxFD) * TX_FD_NUM >
 874                        PAGE_SIZE * FD_PAGE_NUM);
 875
 876                 lp->fd_buf = pci_alloc_consistent(lp->pci_dev,
 877                                                   PAGE_SIZE * FD_PAGE_NUM,
 878                                                   &lp->fd_buf_dma);
 879                 if (!lp->fd_buf)
 880                         return -ENOMEM;
 881                 for (i = 0; i < RX_BUF_NUM; i++) {
 882                         lp->rx_skbs[i].skb =
 883                                 alloc_rxbuf_skb(dev, lp->pci_dev,
 884                                                 &lp->rx_skbs[i].skb_dma);
 885                         if (!lp->rx_skbs[i].skb) {
 886                                 while (--i >= 0) {
 887                                         free_rxbuf_skb(lp->pci_dev,
 888                                                        lp->rx_skbs[i].skb,
 889                                                        lp->rx_skbs[i].skb_dma);
 890                                         lp->rx_skbs[i].skb = NULL;
 891                                 }
 892                                 pci_free_consistent(lp->pci_dev,
 893                                                     PAGE_SIZE * FD_PAGE_NUM,
 894                                                     lp->fd_buf,
 895                                                     lp->fd_buf_dma);
 896                                 lp->fd_buf = NULL;
 897                                 return -ENOMEM;
 898                         }
 899                 }
 900                 printk(KERN_DEBUG "%s: FD buf %p DataBuf",
 901                        dev->name, lp->fd_buf);
 902                 printk("\n");
 903         } else {
 904                 for (i = 0; i < FD_PAGE_NUM; i++)
 905                         clear_page((void *)((unsigned long)lp->fd_buf +
 906                                             i * PAGE_SIZE));
 907         }
 908         fd_addr = (unsigned long)lp->fd_buf;
 909
 910         /* Free Descriptors (for Receive) */
 911         lp->rfd_base = (struct RxFD *)fd_addr;
 912         fd_addr += sizeof(struct RxFD) * RX_FD_NUM;
 913         for (i = 0; i < RX_FD_NUM; i++)
 914                 lp->rfd_base[i].fd.FDCtl = cpu_to_le32(FD_CownsFD);
 915         lp->rfd_cur = lp->rfd_base;
 916         lp->rfd_limit = (struct RxFD *)fd_addr - (RX_FD_RESERVE + 1);
 917
 918         /* Transmit Descriptors */
 919         lp->tfd_base = (struct TxFD *)fd_addr;
 920         fd_addr += sizeof(struct TxFD) * TX_FD_NUM;
 921         for (i = 0; i < TX_FD_NUM; i++) {
 922                 lp->tfd_base[i].fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, &lp->tfd_base[i+1]));
 923                 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff);
 924                 lp->tfd_base[i].fd.FDCtl = cpu_to_le32(0);
 925         }
 926         lp->tfd_base[TX_FD_NUM-1].fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, &lp->tfd_base[0]));
 927         lp->tfd_start = 0;
 928         lp->tfd_end = 0;
 929
 930         /* Buffer List (for Receive) */
 931         lp->fbl_ptr = (struct FrFD *)fd_addr;
 932         lp->fbl_ptr->fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, lp->fbl_ptr));
 933         lp->fbl_ptr->fd.FDCtl = cpu_to_le32(RX_BUF_NUM | FD_CownsFD);
 934         /*
 935          * move all allocated skbs to head of rx_skbs[] array.
 936          * fbl_count mighe not be RX_BUF_NUM if alloc_rxbuf_skb() in
 937          * tc35815_rx() had failed.
 938          */
 939         lp->fbl_count = 0;
 940         for (i = 0; i < RX_BUF_NUM; i++) {
 941                 if (lp->rx_skbs[i].skb) {
 942                         if (i != lp->fbl_count) {
 943                                 lp->rx_skbs[lp->fbl_count].skb =
 944                                         lp->rx_skbs[i].skb;
 945                                 lp->rx_skbs[lp->fbl_count].skb_dma =
 946                                         lp->rx_skbs[i].skb_dma;
 947                         }
 948                         lp->fbl_count++;
 949                 }
 950         }
 951         for (i = 0; i < RX_BUF_NUM; i++) {
 952                 if (i >= lp->fbl_count) {
 953                         lp->fbl_ptr->bd[i].BuffData = 0;
 954                         lp->fbl_ptr->bd[i].BDCtl = 0;
 955                         continue;
 956                 }
 957                 lp->fbl_ptr->bd[i].BuffData =
 958                         cpu_to_le32(lp->rx_skbs[i].skb_dma);
 959                 /* BDID is index of FrFD.bd[] */
 960                 lp->fbl_ptr->bd[i].BDCtl =
 961                         cpu_to_le32(BD_CownsBD | (i << BD_RxBDID_SHIFT) |
 962                                     RX_BUF_SIZE);
 963         }
 964
 965         printk(KERN_DEBUG "%s: TxFD %p RxFD %p FrFD %p\n",
 966                dev->name, lp->tfd_base, lp->rfd_base, lp->fbl_ptr);
 967         return 0;
 968 }
 969
 970 static void
 971 tc35815_clear_queues(struct net_device *dev)
 972 {
 973         struct tc35815_local *lp = netdev_priv(dev);
 974         int i;
 975
 976         for (i = 0; i < TX_FD_NUM; i++) {
 977                 u32 fdsystem = le32_to_cpu(lp->tfd_base[i].fd.FDSystem);
 978                 struct sk_buff *skb =
 979                         fdsystem != 0xffffffff ?
 980                         lp->tx_skbs[fdsystem].skb : NULL;
 981 #ifdef DEBUG
 982                 if (lp->tx_skbs[i].skb != skb) {
 983                         printk("%s: tx_skbs mismatch(%d).\n", dev->name, i);
 984                         panic_queues(dev);
 985                 }
 986 #else
 987                 BUG_ON(lp->tx_skbs[i].skb != skb);
 988 #endif
 989                 if (skb) {
 990                         pci_unmap_single(lp->pci_dev, lp->tx_skbs[i].skb_dma, skb->len, PCI_DMA_TODEVICE);
 991                         lp->tx_skbs[i].skb = NULL;
 992                         lp->tx_skbs[i].skb_dma = 0;
 993                         dev_kfree_skb_any(skb);
 994                 }
 995                 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff);
 996         }
 997
 998         tc35815_init_queues(dev);
 999 }
1000
1001 static void
1002 tc35815_free_queues(struct net_device *dev)
1003 {
1004         struct tc35815_local *lp = netdev_priv(dev);
1005         int i;
1006
1007         if (lp->tfd_base) {
1008                 for (i = 0; i < TX_FD_NUM; i++) {
1009                         u32 fdsystem = le32_to_cpu(lp->tfd_base[i].fd.FDSystem);
1010                         struct sk_buff *skb =
1011                                 fdsystem != 0xffffffff ?
1012                                 lp->tx_skbs[fdsystem].skb : NULL;
1013 #ifdef DEBUG
1014                         if (lp->tx_skbs[i].skb != skb) {
1015                                 printk("%s: tx_skbs mismatch(%d).\n", dev->name, i);
1016                                 panic_queues(dev);
1017                         }
1018 #else
1019                         BUG_ON(lp->tx_skbs[i].skb != skb);
1020 #endif
1021                         if (skb) {
1022                                 dev_kfree_skb(skb);
1023                                 pci_unmap_single(lp->pci_dev, lp->tx_skbs[i].skb_dma, skb->len, PCI_DMA_TODEVICE);
1024                                 lp->tx_skbs[i].skb = NULL;
1025                                 lp->tx_skbs[i].skb_dma = 0;
1026                         }
1027                         lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff);
1028                 }
1029         }
1030
1031         lp->rfd_base = NULL;
1032         lp->rfd_limit = NULL;
1033         lp->rfd_cur = NULL;
1034         lp->fbl_ptr = NULL;
1035
1036         for (i = 0; i < RX_BUF_NUM; i++) {
1037                 if (lp->rx_skbs[i].skb) {
1038                         free_rxbuf_skb(lp->pci_dev, lp->rx_skbs[i].skb,
1039                                        lp->rx_skbs[i].skb_dma);
1040                         lp->rx_skbs[i].skb = NULL;
1041                 }
1042         }
1043         if (lp->fd_buf) {
1044                 pci_free_consistent(lp->pci_dev, PAGE_SIZE * FD_PAGE_NUM,
1045                                     lp->fd_buf, lp->fd_buf_dma);
1046                 lp->fd_buf = NULL;
1047         }
1048 }
1049
1050 static void
1051 dump_txfd(struct TxFD *fd)
1052 {
1053         printk("TxFD(%p): %08x %08x %08x %08x\n", fd,
1054                le32_to_cpu(fd->fd.FDNext),
1055                le32_to_cpu(fd->fd.FDSystem),
1056                le32_to_cpu(fd->fd.FDStat),
1057                le32_to_cpu(fd->fd.FDCtl));
1058         printk("BD: ");
1059         printk(" %08x %08x",
1060                le32_to_cpu(fd->bd.BuffData),
1061                le32_to_cpu(fd->bd.BDCtl));
1062         printk("\n");
1063 }
1064
1065 static int
1066 dump_rxfd(struct RxFD *fd)
1067 {
1068         int i, bd_count = (le32_to_cpu(fd->fd.FDCtl) & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT;
1069         if (bd_count > 8)
1070                 bd_count = 8;
1071         printk("RxFD(%p): %08x %08x %08x %08x\n", fd,
1072                le32_to_cpu(fd->fd.FDNext),
1073                le32_to_cpu(fd->fd.FDSystem),
1074                le32_to_cpu(fd->fd.FDStat),
1075                le32_to_cpu(fd->fd.FDCtl));
1076         if (le32_to_cpu(fd->fd.FDCtl) & FD_CownsFD)
1077                 return 0;
1078         printk("BD: ");
1079         for (i = 0; i < bd_count; i++)
1080                 printk(" %08x %08x",
1081                        le32_to_cpu(fd->bd[i].BuffData),
1082                        le32_to_cpu(fd->bd[i].BDCtl));
1083         printk("\n");
1084         return bd_count;
1085 }
1086
1087 #ifdef DEBUG
1088 static void
1089 dump_frfd(struct FrFD *fd)
1090 {
1091         int i;
1092         printk("FrFD(%p): %08x %08x %08x %08x\n", fd,
1093                le32_to_cpu(fd->fd.FDNext),
1094                le32_to_cpu(fd->fd.FDSystem),
1095                le32_to_cpu(fd->fd.FDStat),
1096                le32_to_cpu(fd->fd.FDCtl));
1097         printk("BD: ");
1098         for (i = 0; i < RX_BUF_NUM; i++)
1099                 printk(" %08x %08x",
1100                        le32_to_cpu(fd->bd[i].BuffData),
1101                        le32_to_cpu(fd->bd[i].BDCtl));
1102         printk("\n");
1103 }
1104
1105 static void
1106 panic_queues(struct net_device *dev)
1107 {
1108         struct tc35815_local *lp = netdev_priv(dev);
1109         int i;
1110
1111         printk("TxFD base %p, start %u, end %u\n",
1112                lp->tfd_base, lp->tfd_start, lp->tfd_end);
1113         printk("RxFD base %p limit %p cur %p\n",
1114                lp->rfd_base, lp->rfd_limit, lp->rfd_cur);
1115         printk("FrFD %p\n", lp->fbl_ptr);
1116         for (i = 0; i < TX_FD_NUM; i++)
1117                 dump_txfd(&lp->tfd_base[i]);
1118         for (i = 0; i < RX_FD_NUM; i++) {
1119                 int bd_count = dump_rxfd(&lp->rfd_base[i]);
1120                 i += (bd_count + 1) / 2;        /* skip BDs */
1121         }
1122         dump_frfd(lp->fbl_ptr);
1123         panic("%s: Illegal queue state.", dev->name);
1124 }
1125 #endif
1126
1127 static void print_eth(const u8 *add)
1128 {
1129         printk(KERN_DEBUG "print_eth(%p)\n", add);
1130         printk(KERN_DEBUG " %pM => %pM : %02x%02x\n",
1131                 add + 6, add, add[12], add[13]);
1132 }
1133
1134 static int tc35815_tx_full(struct net_device *dev)
1135 {
1136         struct tc35815_local *lp = netdev_priv(dev);
1137         return (lp->tfd_start + 1) % TX_FD_NUM == lp->tfd_end;
1138 }
1139
1140 static void tc35815_restart(struct net_device *dev)
1141 {
1142         struct tc35815_local *lp = netdev_priv(dev);
1143         int ret;
1144
1145         if (dev->phydev) {
1146                 ret = phy_init_hw(dev->phydev);
1147                 if (ret)
1148                         printk(KERN_ERR "%s: PHY init failed.\n", dev->name);
1149         }
1150
1151         spin_lock_bh(&lp->rx_lock);
1152         spin_lock_irq(&lp->lock);
1153         tc35815_chip_reset(dev);
1154         tc35815_clear_queues(dev);
1155         tc35815_chip_init(dev);
1156         /* Reconfigure CAM again since tc35815_chip_init() initialize it. */
1157         tc35815_set_multicast_list(dev);
1158         spin_unlock_irq(&lp->lock);
1159         spin_unlock_bh(&lp->rx_lock);
1160
1161         netif_wake_queue(dev);
1162 }
1163
1164 static void tc35815_restart_work(struct work_struct *work)
1165 {
1166         struct tc35815_local *lp =
1167                 container_of(work, struct tc35815_local, restart_work);
1168         struct net_device *dev = lp->dev;
1169
1170         tc35815_restart(dev);
1171 }
1172
1173 static void tc35815_schedule_restart(struct net_device *dev)
1174 {
1175         struct tc35815_local *lp = netdev_priv(dev);
1176         struct tc35815_regs __iomem *tr =
1177                 (struct tc35815_regs __iomem *)dev->base_addr;
1178         unsigned long flags;
1179
1180         /* disable interrupts */
1181         spin_lock_irqsave(&lp->lock, flags);
1182         tc_writel(0, &tr->Int_En);
1183         tc_writel(tc_readl(&tr->DMA_Ctl) | DMA_IntMask, &tr->DMA_Ctl);
1184         schedule_work(&lp->restart_work);
1185         spin_unlock_irqrestore(&lp->lock, flags);
1186 }
1187
1188 static void tc35815_tx_timeout(struct net_device *dev)
1189 {
1190         struct tc35815_regs __iomem *tr =
1191                 (struct tc35815_regs __iomem *)dev->base_addr;
1192
1193         printk(KERN_WARNING "%s: transmit timed out, status %#x\n",
1194                dev->name, tc_readl(&tr->Tx_Stat));
1195
1196         /* Try to restart the adaptor. */
1197         tc35815_schedule_restart(dev);
1198         dev->stats.tx_errors++;
1199 }
1200
1201 /*
1202  * Open/initialize the controller. This is called (in the current kernel)
1203  * sometime after booting when the 'ifconfig' program is run.
1204  *
1205  * This routine should set everything up anew at each open, even
1206  * registers that "should" only need to be set once at boot, so that
1207  * there is non-reboot way to recover if something goes wrong.
1208  */
1209 static int
1210 tc35815_open(struct net_device *dev)
1211 {
1212         struct tc35815_local *lp = netdev_priv(dev);
1213
1214         /*
1215          * This is used if the interrupt line can turned off (shared).
1216          * See 3c503.c for an example of selecting the IRQ at config-time.
1217          */
1218         if (request_irq(dev->irq, tc35815_interrupt, IRQF_SHARED,
1219                         dev->name, dev))
1220                 return -EAGAIN;
1221
1222         tc35815_chip_reset(dev);
1223
1224         if (tc35815_init_queues(dev) != 0) {
1225                 free_irq(dev->irq, dev);
1226                 return -EAGAIN;
1227         }
1228
1229         napi_enable(&lp->napi);
1230
1231         /* Reset the hardware here. Don't forget to set the station address. */
1232         spin_lock_irq(&lp->lock);
1233         tc35815_chip_init(dev);
1234         spin_unlock_irq(&lp->lock);
1235
1236         netif_carrier_off(dev);
1237         /* schedule a link state check */
1238         phy_start(dev->phydev);
1239
1240         /* We are now ready to accept transmit requeusts from
1241          * the queueing layer of the networking.
1242          */
1243         netif_start_queue(dev);
1244
1245         return 0;
1246 }
1247
1248 /* This will only be invoked if your driver is _not_ in XOFF state.
1249  * What this means is that you need not check it, and that this
1250  * invariant will hold if you make sure that the netif_*_queue()
1251  * calls are done at the proper times.
1252  */
1253 static netdev_tx_t
1254 tc35815_send_packet(struct sk_buff *skb, struct net_device *dev)
1255 {
1256         struct tc35815_local *lp = netdev_priv(dev);
1257         struct TxFD *txfd;
1258         unsigned long flags;
1259
1260         /* If some error occurs while trying to transmit this
1261          * packet, you should return '1' from this function.
1262          * In such a case you _may not_ do anything to the
1263          * SKB, it is still owned by the network queueing
1264          * layer when an error is returned.  This means you
1265          * may not modify any SKB fields, you may not free
1266          * the SKB, etc.
1267          */
1268
1269         /* This is the most common case for modern hardware.
1270          * The spinlock protects this code from the TX complete
1271          * hardware interrupt handler.  Queue flow control is
1272          * thus managed under this lock as well.
1273          */
1274         spin_lock_irqsave(&lp->lock, flags);
1275
1276         /* failsafe... (handle txdone now if half of FDs are used) */
1277         if ((lp->tfd_start + TX_FD_NUM - lp->tfd_end) % TX_FD_NUM >
1278             TX_FD_NUM / 2)
1279                 tc35815_txdone(dev);
1280
1281         if (netif_msg_pktdata(lp))
1282                 print_eth(skb->data);
1283 #ifdef DEBUG
1284         if (lp->tx_skbs[lp->tfd_start].skb) {
1285                 printk("%s: tx_skbs conflict.\n", dev->name);
1286                 panic_queues(dev);
1287         }
1288 #else
1289         BUG_ON(lp->tx_skbs[lp->tfd_start].skb);
1290 #endif
1291         lp->tx_skbs[lp->tfd_start].skb = skb;
1292         lp->tx_skbs[lp->tfd_start].skb_dma = pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
1293
1294         /*add to ring */
1295         txfd = &lp->tfd_base[lp->tfd_start];
1296         txfd->bd.BuffData = cpu_to_le32(lp->tx_skbs[lp->tfd_start].skb_dma);
1297         txfd->bd.BDCtl = cpu_to_le32(skb->len);
1298         txfd->fd.FDSystem = cpu_to_le32(lp->tfd_start);
1299         txfd->fd.FDCtl = cpu_to_le32(FD_CownsFD | (1 << FD_BDCnt_SHIFT));
1300
1301         if (lp->tfd_start == lp->tfd_end) {
1302                 struct tc35815_regs __iomem *tr =
1303                         (struct tc35815_regs __iomem *)dev->base_addr;
1304                 /* Start DMA Transmitter. */
1305                 txfd->fd.FDNext |= cpu_to_le32(FD_Next_EOL);
1306                 txfd->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx);
1307                 if (netif_msg_tx_queued(lp)) {
1308                         printk("%s: starting TxFD.\n", dev->name);
1309                         dump_txfd(txfd);
1310                 }
1311                 tc_writel(fd_virt_to_bus(lp, txfd), &tr->TxFrmPtr);
1312         } else {
1313                 txfd->fd.FDNext &= cpu_to_le32(~FD_Next_EOL);
1314                 if (netif_msg_tx_queued(lp)) {
1315                         printk("%s: queueing TxFD.\n", dev->name);
1316                         dump_txfd(txfd);
1317                 }
1318         }
1319         lp->tfd_start = (lp->tfd_start + 1) % TX_FD_NUM;
1320
1321         /* If we just used up the very last entry in the
1322          * TX ring on this device, tell the queueing
1323          * layer to send no more.
1324          */
1325         if (tc35815_tx_full(dev)) {
1326                 if (netif_msg_tx_queued(lp))
1327                         printk(KERN_WARNING "%s: TxFD Exhausted.\n", dev->name);
1328                 netif_stop_queue(dev);
1329         }
1330
1331         /* When the TX completion hw interrupt arrives, this
1332          * is when the transmit statistics are updated.
1333          */
1334
1335         spin_unlock_irqrestore(&lp->lock, flags);
1336         return NETDEV_TX_OK;
1337 }
1338
1339 #define FATAL_ERROR_INT \
1340         (Int_IntPCI | Int_DmParErr | Int_IntNRAbt)
1341 static void tc35815_fatal_error_interrupt(struct net_device *dev, u32 status)
1342 {
1343         static int count;
1344         printk(KERN_WARNING "%s: Fatal Error Intterrupt (%#x):",
1345                dev->name, status);
1346         if (status & Int_IntPCI)
1347                 printk(" IntPCI");
1348         if (status & Int_DmParErr)
1349                 printk(" DmParErr");
1350         if (status & Int_IntNRAbt)
1351                 printk(" IntNRAbt");
1352         printk("\n");
1353         if (count++ > 100)
1354                 panic("%s: Too many fatal errors.", dev->name);
1355         printk(KERN_WARNING "%s: Resetting ...\n", dev->name);
1356         /* Try to restart the adaptor. */
1357         tc35815_schedule_restart(dev);
1358 }
1359
1360 static int tc35815_do_interrupt(struct net_device *dev, u32 status, int limit)
1361 {
1362         struct tc35815_local *lp = netdev_priv(dev);
1363         int ret = -1;
1364
1365         /* Fatal errors... */
1366         if (status & FATAL_ERROR_INT) {
1367                 tc35815_fatal_error_interrupt(dev, status);
1368                 return 0;
1369         }
1370         /* recoverable errors */
1371         if (status & Int_IntFDAEx) {
1372                 if (netif_msg_rx_err(lp))
1373                         dev_warn(&dev->dev,
1374                                  "Free Descriptor Area Exhausted (%#x).\n",
1375                                  status);
1376                 dev->stats.rx_dropped++;
1377                 ret = 0;
1378         }
1379         if (status & Int_IntBLEx) {
1380                 if (netif_msg_rx_err(lp))
1381                         dev_warn(&dev->dev,
1382                                  "Buffer List Exhausted (%#x).\n",
1383                                  status);
1384                 dev->stats.rx_dropped++;
1385                 ret = 0;
1386         }
1387         if (status & Int_IntExBD) {
1388                 if (netif_msg_rx_err(lp))
1389                         dev_warn(&dev->dev,
1390                                  "Excessive Buffer Descriptors (%#x).\n",
1391                                  status);
1392                 dev->stats.rx_length_errors++;
1393                 ret = 0;
1394         }
1395
1396         /* normal notification */
1397         if (status & Int_IntMacRx) {
1398                 /* Got a packet(s). */
1399                 ret = tc35815_rx(dev, limit);
1400                 lp->lstats.rx_ints++;
1401         }
1402         if (status & Int_IntMacTx) {
1403                 /* Transmit complete. */
1404                 lp->lstats.tx_ints++;
1405                 spin_lock_irq(&lp->lock);
1406                 tc35815_txdone(dev);
1407                 spin_unlock_irq(&lp->lock);
1408                 if (ret < 0)
1409                         ret = 0;
1410         }
1411         return ret;
1412 }
1413
1414 /*
1415  * The typical workload of the driver:
1416  * Handle the network interface interrupts.
1417  */
1418 static irqreturn_t tc35815_interrupt(int irq, void *dev_id)
1419 {
1420         struct net_device *dev = dev_id;
1421         struct tc35815_local *lp = netdev_priv(dev);
1422         struct tc35815_regs __iomem *tr =
1423                 (struct tc35815_regs __iomem *)dev->base_addr;
1424         u32 dmactl = tc_readl(&tr->DMA_Ctl);
1425
1426         if (!(dmactl & DMA_IntMask)) {
1427                 /* disable interrupts */
1428                 tc_writel(dmactl | DMA_IntMask, &tr->DMA_Ctl);
1429                 if (napi_schedule_prep(&lp->napi))
1430                         __napi_schedule(&lp->napi);
1431                 else {
1432                         printk(KERN_ERR "%s: interrupt taken in poll\n",
1433                                dev->name);
1434                         BUG();
1435                 }
1436                 (void)tc_readl(&tr->Int_Src);   /* flush */
1437                 return IRQ_HANDLED;
1438         }
1439         return IRQ_NONE;
1440 }
1441
1442 #ifdef CONFIG_NET_POLL_CONTROLLER
1443 static void tc35815_poll_controller(struct net_device *dev)
1444 {
1445         disable_irq(dev->irq);
1446         tc35815_interrupt(dev->irq, dev);
1447         enable_irq(dev->irq);
1448 }
1449 #endif
1450
1451 /* We have a good packet(s), get it/them out of the buffers. */
1452 static int
1453 tc35815_rx(struct net_device *dev, int limit)
1454 {
1455         struct tc35815_local *lp = netdev_priv(dev);
1456         unsigned int fdctl;
1457         int i;
1458         int received = 0;
1459
1460         while (!((fdctl = le32_to_cpu(lp->rfd_cur->fd.FDCtl)) & FD_CownsFD)) {
1461                 int status = le32_to_cpu(lp->rfd_cur->fd.FDStat);
1462                 int pkt_len = fdctl & FD_FDLength_MASK;
1463                 int bd_count = (fdctl & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT;
1464 #ifdef DEBUG
1465                 struct RxFD *next_rfd;
1466 #endif
1467 #if (RX_CTL_CMD & Rx_StripCRC) == 0
1468                 pkt_len -= ETH_FCS_LEN;
1469 #endif
1470
1471                 if (netif_msg_rx_status(lp))
1472                         dump_rxfd(lp->rfd_cur);
1473                 if (status & Rx_Good) {
1474                         struct sk_buff *skb;
1475                         unsigned char *data;
1476                         int cur_bd;
1477
1478                         if (--limit < 0)
1479                                 break;
1480                         BUG_ON(bd_count > 1);
1481                         cur_bd = (le32_to_cpu(lp->rfd_cur->bd[0].BDCtl)
1482                                   & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT;
1483 #ifdef DEBUG
1484                         if (cur_bd >= RX_BUF_NUM) {
1485                                 printk("%s: invalid BDID.\n", dev->name);
1486                                 panic_queues(dev);
1487                         }
1488                         BUG_ON(lp->rx_skbs[cur_bd].skb_dma !=
1489                                (le32_to_cpu(lp->rfd_cur->bd[0].BuffData) & ~3));
1490                         if (!lp->rx_skbs[cur_bd].skb) {
1491                                 printk("%s: NULL skb.\n", dev->name);
1492                                 panic_queues(dev);
1493                         }
1494 #else
1495                         BUG_ON(cur_bd >= RX_BUF_NUM);
1496 #endif
1497                         skb = lp->rx_skbs[cur_bd].skb;
1498                         prefetch(skb->data);
1499                         lp->rx_skbs[cur_bd].skb = NULL;
1500                         pci_unmap_single(lp->pci_dev,
1501                                          lp->rx_skbs[cur_bd].skb_dma,
1502                                          RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1503                         if (!HAVE_DMA_RXALIGN(lp) && NET_IP_ALIGN != 0)
1504                                 memmove(skb->data, skb->data - NET_IP_ALIGN,
1505                                         pkt_len);
1506                         data = skb_put(skb, pkt_len);
1507                         if (netif_msg_pktdata(lp))
1508                                 print_eth(data);
1509                         skb->protocol = eth_type_trans(skb, dev);
1510                         netif_receive_skb(skb);
1511                         received++;
1512                         dev->stats.rx_packets++;
1513                         dev->stats.rx_bytes += pkt_len;
1514                 } else {
1515                         dev->stats.rx_errors++;
1516                         if (netif_msg_rx_err(lp))
1517                                 dev_info(&dev->dev, "Rx error (status %x)\n",
1518                                          status & Rx_Stat_Mask);
1519                         /* WORKAROUND: LongErr and CRCErr means Overflow. */
1520                         if ((status & Rx_LongErr) && (status & Rx_CRCErr)) {
1521                                 status &= ~(Rx_LongErr|Rx_CRCErr);
1522                                 status |= Rx_Over;
1523                         }
1524                         if (status & Rx_LongErr)
1525                                 dev->stats.rx_length_errors++;
1526                         if (status & Rx_Over)
1527                                 dev->stats.rx_fifo_errors++;
1528                         if (status & Rx_CRCErr)
1529                                 dev->stats.rx_crc_errors++;
1530                         if (status & Rx_Align)
1531                                 dev->stats.rx_frame_errors++;
1532                 }
1533
1534                 if (bd_count > 0) {
1535                         /* put Free Buffer back to controller */
1536                         int bdctl = le32_to_cpu(lp->rfd_cur->bd[bd_count - 1].BDCtl);
1537                         unsigned char id =
1538                                 (bdctl & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT;
1539 #ifdef DEBUG
1540                         if (id >= RX_BUF_NUM) {
1541                                 printk("%s: invalid BDID.\n", dev->name);
1542                                 panic_queues(dev);
1543                         }
1544 #else
1545                         BUG_ON(id >= RX_BUF_NUM);
1546 #endif
1547                         /* free old buffers */
1548                         lp->fbl_count--;
1549                         while (lp->fbl_count < RX_BUF_NUM)
1550                         {
1551                                 unsigned char curid =
1552                                         (id + 1 + lp->fbl_count) % RX_BUF_NUM;
1553                                 struct BDesc *bd = &lp->fbl_ptr->bd[curid];
1554 #ifdef DEBUG
1555                                 bdctl = le32_to_cpu(bd->BDCtl);
1556                                 if (bdctl & BD_CownsBD) {
1557                                         printk("%s: Freeing invalid BD.\n",
1558                                                dev->name);
1559                                         panic_queues(dev);
1560                                 }
1561 #endif
1562                                 /* pass BD to controller */
1563                                 if (!lp->rx_skbs[curid].skb) {
1564                                         lp->rx_skbs[curid].skb =
1565                                                 alloc_rxbuf_skb(dev,
1566                                                                 lp->pci_dev,
1567                                                                 &lp->rx_skbs[curid].skb_dma);
1568                                         if (!lp->rx_skbs[curid].skb)
1569                                                 break; /* try on next reception */
1570                                         bd->BuffData = cpu_to_le32(lp->rx_skbs[curid].skb_dma);
1571                                 }
1572                                 /* Note: BDLength was modified by chip. */
1573                                 bd->BDCtl = cpu_to_le32(BD_CownsBD |
1574                                                         (curid << BD_RxBDID_SHIFT) |
1575                                                         RX_BUF_SIZE);
1576                                 lp->fbl_count++;
1577                         }
1578                 }
1579
1580                 /* put RxFD back to controller */
1581 #ifdef DEBUG
1582                 next_rfd = fd_bus_to_virt(lp,
1583                                           le32_to_cpu(lp->rfd_cur->fd.FDNext));
1584                 if (next_rfd < lp->rfd_base || next_rfd > lp->rfd_limit) {
1585                         printk("%s: RxFD FDNext invalid.\n", dev->name);
1586                         panic_queues(dev);
1587                 }
1588 #endif
1589                 for (i = 0; i < (bd_count + 1) / 2 + 1; i++) {
1590                         /* pass FD to controller */
1591 #ifdef DEBUG
1592                         lp->rfd_cur->fd.FDNext = cpu_to_le32(0xdeaddead);
1593 #else
1594                         lp->rfd_cur->fd.FDNext = cpu_to_le32(FD_Next_EOL);
1595 #endif
1596                         lp->rfd_cur->fd.FDCtl = cpu_to_le32(FD_CownsFD);
1597                         lp->rfd_cur++;
1598                 }
1599                 if (lp->rfd_cur > lp->rfd_limit)
1600                         lp->rfd_cur = lp->rfd_base;
1601 #ifdef DEBUG
1602                 if (lp->rfd_cur != next_rfd)
1603                         printk("rfd_cur = %p, next_rfd %p\n",
1604                                lp->rfd_cur, next_rfd);
1605 #endif
1606         }
1607
1608         return received;
1609 }
1610
1611 static int tc35815_poll(struct napi_struct *napi, int budget)
1612 {
1613         struct tc35815_local *lp = container_of(napi, struct tc35815_local, napi);
1614         struct net_device *dev = lp->dev;
1615         struct tc35815_regs __iomem *tr =
1616                 (struct tc35815_regs __iomem *)dev->base_addr;
1617         int received = 0, handled;
1618         u32 status;
1619
1620         if (budget <= 0)
1621                 return received;
1622
1623         spin_lock(&lp->rx_lock);
1624         status = tc_readl(&tr->Int_Src);
1625         do {
1626                 /* BLEx, FDAEx will be cleared later */
1627                 tc_writel(status & ~(Int_BLEx | Int_FDAEx),
1628                           &tr->Int_Src);        /* write to clear */
1629
1630                 handled = tc35815_do_interrupt(dev, status, budget - received);
1631                 if (status & (Int_BLEx | Int_FDAEx))
1632                         tc_writel(status & (Int_BLEx | Int_FDAEx),
1633                                   &tr->Int_Src);
1634                 if (handled >= 0) {
1635                         received += handled;
1636                         if (received >= budget)
1637                                 break;
1638                 }
1639                 status = tc_readl(&tr->Int_Src);
1640         } while (status);
1641         spin_unlock(&lp->rx_lock);
1642
1643         if (received < budget) {
1644                 napi_complete(napi);
1645                 /* enable interrupts */
1646                 tc_writel(tc_readl(&tr->DMA_Ctl) & ~DMA_IntMask, &tr->DMA_Ctl);
1647         }
1648         return received;
1649 }
1650
1651 #define TX_STA_ERR      (Tx_ExColl|Tx_Under|Tx_Defer|Tx_NCarr|Tx_LateColl|Tx_TxPar|Tx_SQErr)
1652
1653 static void
1654 tc35815_check_tx_stat(struct net_device *dev, int status)
1655 {
1656         struct tc35815_local *lp = netdev_priv(dev);
1657         const char *msg = NULL;
1658
1659         /* count collisions */
1660         if (status & Tx_ExColl)
1661                 dev->stats.collisions += 16;
1662         if (status & Tx_TxColl_MASK)
1663                 dev->stats.collisions += status & Tx_TxColl_MASK;
1664
1665         /* TX4939 does not have NCarr */
1666         if (lp->chiptype == TC35815_TX4939)
1667                 status &= ~Tx_NCarr;
1668         /* WORKAROUND: ignore LostCrS in full duplex operation */
1669         if (!lp->link || lp->duplex == DUPLEX_FULL)
1670                 status &= ~Tx_NCarr;
1671
1672         if (!(status & TX_STA_ERR)) {
1673                 /* no error. */
1674                 dev->stats.tx_packets++;
1675                 return;
1676         }
1677
1678         dev->stats.tx_errors++;
1679         if (status & Tx_ExColl) {
1680                 dev->stats.tx_aborted_errors++;
1681                 msg = "Excessive Collision.";
1682         }
1683         if (status & Tx_Under) {
1684                 dev->stats.tx_fifo_errors++;
1685                 msg = "Tx FIFO Underrun.";
1686                 if (lp->lstats.tx_underrun < TX_THRESHOLD_KEEP_LIMIT) {
1687                         lp->lstats.tx_underrun++;
1688                         if (lp->lstats.tx_underrun >= TX_THRESHOLD_KEEP_LIMIT) {
1689                                 struct tc35815_regs __iomem *tr =
1690                                         (struct tc35815_regs __iomem *)dev->base_addr;
1691                                 tc_writel(TX_THRESHOLD_MAX, &tr->TxThrsh);
1692                                 msg = "Tx FIFO Underrun.Change Tx threshold to max.";
1693                         }
1694                 }
1695         }
1696         if (status & Tx_Defer) {
1697                 dev->stats.tx_fifo_errors++;
1698                 msg = "Excessive Deferral.";
1699         }
1700         if (status & Tx_NCarr) {
1701                 dev->stats.tx_carrier_errors++;
1702                 msg = "Lost Carrier Sense.";
1703         }
1704         if (status & Tx_LateColl) {
1705                 dev->stats.tx_aborted_errors++;
1706                 msg = "Late Collision.";
1707         }
1708         if (status & Tx_TxPar) {
1709                 dev->stats.tx_fifo_errors++;
1710                 msg = "Transmit Parity Error.";
1711         }
1712         if (status & Tx_SQErr) {
1713                 dev->stats.tx_heartbeat_errors++;
1714                 msg = "Signal Quality Error.";
1715         }
1716         if (msg && netif_msg_tx_err(lp))
1717                 printk(KERN_WARNING "%s: %s (%#x)\n", dev->name, msg, status);
1718 }
1719
1720 /* This handles TX complete events posted by the device
1721  * via interrupts.
1722  */
1723 static void
1724 tc35815_txdone(struct net_device *dev)
1725 {
1726         struct tc35815_local *lp = netdev_priv(dev);
1727         struct TxFD *txfd;
1728         unsigned int fdctl;
1729
1730         txfd = &lp->tfd_base[lp->tfd_end];
1731         while (lp->tfd_start != lp->tfd_end &&
1732                !((fdctl = le32_to_cpu(txfd->fd.FDCtl)) & FD_CownsFD)) {
1733                 int status = le32_to_cpu(txfd->fd.FDStat);
1734                 struct sk_buff *skb;
1735                 unsigned long fdnext = le32_to_cpu(txfd->fd.FDNext);
1736                 u32 fdsystem = le32_to_cpu(txfd->fd.FDSystem);
1737
1738                 if (netif_msg_tx_done(lp)) {
1739                         printk("%s: complete TxFD.\n", dev->name);
1740                         dump_txfd(txfd);
1741                 }
1742                 tc35815_check_tx_stat(dev, status);
1743
1744                 skb = fdsystem != 0xffffffff ?
1745                         lp->tx_skbs[fdsystem].skb : NULL;
1746 #ifdef DEBUG
1747                 if (lp->tx_skbs[lp->tfd_end].skb != skb) {
1748                         printk("%s: tx_skbs mismatch.\n", dev->name);
1749                         panic_queues(dev);
1750                 }
1751 #else
1752                 BUG_ON(lp->tx_skbs[lp->tfd_end].skb != skb);
1753 #endif
1754                 if (skb) {
1755                         dev->stats.tx_bytes += skb->len;
1756                         pci_unmap_single(lp->pci_dev, lp->tx_skbs[lp->tfd_end].skb_dma, skb->len, PCI_DMA_TODEVICE);
1757                         lp->tx_skbs[lp->tfd_end].skb = NULL;
1758                         lp->tx_skbs[lp->tfd_end].skb_dma = 0;
1759                         dev_kfree_skb_any(skb);
1760                 }
1761                 txfd->fd.FDSystem = cpu_to_le32(0xffffffff);
1762
1763                 lp->tfd_end = (lp->tfd_end + 1) % TX_FD_NUM;
1764                 txfd = &lp->tfd_base[lp->tfd_end];
1765 #ifdef DEBUG
1766                 if ((fdnext & ~FD_Next_EOL) != fd_virt_to_bus(lp, txfd)) {
1767                         printk("%s: TxFD FDNext invalid.\n", dev->name);
1768                         panic_queues(dev);
1769                 }
1770 #endif
1771                 if (fdnext & FD_Next_EOL) {
1772                         /* DMA Transmitter has been stopping... */
1773                         if (lp->tfd_end != lp->tfd_start) {
1774                                 struct tc35815_regs __iomem *tr =
1775                                         (struct tc35815_regs __iomem *)dev->base_addr;
1776                                 int head = (lp->tfd_start + TX_FD_NUM - 1) % TX_FD_NUM;
1777                                 struct TxFD *txhead = &lp->tfd_base[head];
1778                                 int qlen = (lp->tfd_start + TX_FD_NUM
1779                                             - lp->tfd_end) % TX_FD_NUM;
1780
1781 #ifdef DEBUG
1782                                 if (!(le32_to_cpu(txfd->fd.FDCtl) & FD_CownsFD)) {
1783                                         printk("%s: TxFD FDCtl invalid.\n", dev->name);
1784                                         panic_queues(dev);
1785                                 }
1786 #endif
1787                                 /* log max queue length */
1788                                 if (lp->lstats.max_tx_qlen < qlen)
1789                                         lp->lstats.max_tx_qlen = qlen;
1790
1791
1792                                 /* start DMA Transmitter again */
1793                                 txhead->fd.FDNext |= cpu_to_le32(FD_Next_EOL);
1794                                 txhead->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx);
1795                                 if (netif_msg_tx_queued(lp)) {
1796                                         printk("%s: start TxFD on queue.\n",
1797                                                dev->name);
1798                                         dump_txfd(txfd);
1799                                 }
1800                                 tc_writel(fd_virt_to_bus(lp, txfd), &tr->TxFrmPtr);
1801                         }
1802                         break;
1803                 }
1804         }
1805
1806         /* If we had stopped the queue due to a "tx full"
1807          * condition, and space has now been made available,
1808          * wake up the queue.
1809          */
1810         if (netif_queue_stopped(dev) && !tc35815_tx_full(dev))
1811                 netif_wake_queue(dev);
1812 }
1813
1814 /* The inverse routine to tc35815_open(). */
1815 static int
1816 tc35815_close(struct net_device *dev)
1817 {
1818         struct tc35815_local *lp = netdev_priv(dev);
1819
1820         netif_stop_queue(dev);
1821         napi_disable(&lp->napi);
1822         if (dev->phydev)
1823                 phy_stop(dev->phydev);
1824         cancel_work_sync(&lp->restart_work);
1825
1826         /* Flush the Tx and disable Rx here. */
1827         tc35815_chip_reset(dev);
1828         free_irq(dev->irq, dev);
1829
1830         tc35815_free_queues(dev);
1831
1832         return 0;
1833
1834 }
1835
1836 /*
1837  * Get the current statistics.
1838  * This may be called with the card open or closed.
1839  */
1840 static struct net_device_stats *tc35815_get_stats(struct net_device *dev)
1841 {
1842         struct tc35815_regs __iomem *tr =
1843                 (struct tc35815_regs __iomem *)dev->base_addr;
1844         if (netif_running(dev))
1845                 /* Update the statistics from the device registers. */
1846                 dev->stats.rx_missed_errors += tc_readl(&tr->Miss_Cnt);
1847
1848         return &dev->stats;
1849 }
1850
1851 static void tc35815_set_cam_entry(struct net_device *dev, int index, unsigned char *addr)
1852 {
1853         struct tc35815_local *lp = netdev_priv(dev);
1854         struct tc35815_regs __iomem *tr =
1855                 (struct tc35815_regs __iomem *)dev->base_addr;
1856         int cam_index = index * 6;
1857         u32 cam_data;
1858         u32 saved_addr;
1859
1860         saved_addr = tc_readl(&tr->CAM_Adr);
1861
1862         if (netif_msg_hw(lp))
1863                 printk(KERN_DEBUG "%s: CAM %d: %pM\n",
1864                         dev->name, index, addr);
1865         if (index & 1) {
1866                 /* read modify write */
1867                 tc_writel(cam_index - 2, &tr->CAM_Adr);
1868                 cam_data = tc_readl(&tr->CAM_Data) & 0xffff0000;
1869                 cam_data |= addr[0] << 8 | addr[1];
1870                 tc_writel(cam_data, &tr->CAM_Data);
1871                 /* write whole word */
1872                 tc_writel(cam_index + 2, &tr->CAM_Adr);
1873                 cam_data = (addr[2] << 24) | (addr[3] << 16) | (addr[4] << 8) | addr[5];
1874                 tc_writel(cam_data, &tr->CAM_Data);
1875         } else {
1876                 /* write whole word */
1877                 tc_writel(cam_index, &tr->CAM_Adr);
1878                 cam_data = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3];
1879                 tc_writel(cam_data, &tr->CAM_Data);
1880                 /* read modify write */
1881                 tc_writel(cam_index + 4, &tr->CAM_Adr);
1882                 cam_data = tc_readl(&tr->CAM_Data) & 0x0000ffff;
1883                 cam_data |= addr[4] << 24 | (addr[5] << 16);
1884                 tc_writel(cam_data, &tr->CAM_Data);
1885         }
1886
1887         tc_writel(saved_addr, &tr->CAM_Adr);
1888 }
1889
1890
1891 /*
1892  * Set or clear the multicast filter for this adaptor.
1893  * num_addrs == -1      Promiscuous mode, receive all packets
1894  * num_addrs == 0       Normal mode, clear multicast list
1895  * num_addrs > 0        Multicast mode, receive normal and MC packets,
1896  *                      and do best-effort filtering.
1897  */
1898 static void
1899 tc35815_set_multicast_list(struct net_device *dev)
1900 {
1901         struct tc35815_regs __iomem *tr =
1902                 (struct tc35815_regs __iomem *)dev->base_addr;
1903
1904         if (dev->flags & IFF_PROMISC) {
1905                 /* With some (all?) 100MHalf HUB, controller will hang
1906                  * if we enabled promiscuous mode before linkup... */
1907                 struct tc35815_local *lp = netdev_priv(dev);
1908
1909                 if (!lp->link)
1910                         return;
1911                 /* Enable promiscuous mode */
1912                 tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc | CAM_StationAcc, &tr->CAM_Ctl);
1913         } else if ((dev->flags & IFF_ALLMULTI) ||
1914                   netdev_mc_count(dev) > CAM_ENTRY_MAX - 3) {
1915                 /* CAM 0, 1, 20 are reserved. */
1916                 /* Disable promiscuous mode, use normal mode. */
1917                 tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc, &tr->CAM_Ctl);
1918         } else if (!netdev_mc_empty(dev)) {
1919                 struct netdev_hw_addr *ha;
1920                 int i;
1921                 int ena_bits = CAM_Ena_Bit(CAM_ENTRY_SOURCE);
1922
1923                 tc_writel(0, &tr->CAM_Ctl);
1924                 /* Walk the address list, and load the filter */
1925                 i = 0;
1926                 netdev_for_each_mc_addr(ha, dev) {
1927                         /* entry 0,1 is reserved. */
1928                         tc35815_set_cam_entry(dev, i + 2, ha->addr);
1929                         ena_bits |= CAM_Ena_Bit(i + 2);
1930                         i++;
1931                 }
1932                 tc_writel(ena_bits, &tr->CAM_Ena);
1933                 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl);
1934         } else {
1935                 tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena);
1936                 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl);
1937         }
1938 }
1939
1940 static void tc35815_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1941 {
1942         struct tc35815_local *lp = netdev_priv(dev);
1943
1944         strlcpy(info->driver, MODNAME, sizeof(info->driver));
1945         strlcpy(info->version, DRV_VERSION, sizeof(info->version));
1946         strlcpy(info->bus_info, pci_name(lp->pci_dev), sizeof(info->bus_info));
1947 }
1948
1949 static u32 tc35815_get_msglevel(struct net_device *dev)
1950 {
1951         struct tc35815_local *lp = netdev_priv(dev);
1952         return lp->msg_enable;
1953 }
1954
1955 static void tc35815_set_msglevel(struct net_device *dev, u32 datum)
1956 {
1957         struct tc35815_local *lp = netdev_priv(dev);
1958         lp->msg_enable = datum;
1959 }
1960
1961 static int tc35815_get_sset_count(struct net_device *dev, int sset)
1962 {
1963         struct tc35815_local *lp = netdev_priv(dev);
1964
1965         switch (sset) {
1966         case ETH_SS_STATS:
1967                 return sizeof(lp->lstats) / sizeof(int);
1968         default:
1969                 return -EOPNOTSUPP;
1970         }
1971 }
1972
1973 static void tc35815_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
1974 {
1975         struct tc35815_local *lp = netdev_priv(dev);
1976         data[0] = lp->lstats.max_tx_qlen;
1977         data[1] = lp->lstats.tx_ints;
1978         data[2] = lp->lstats.rx_ints;
1979         data[3] = lp->lstats.tx_underrun;
1980 }
1981
1982 static struct {
1983         const char str[ETH_GSTRING_LEN];
1984 } ethtool_stats_keys[] = {
1985         { "max_tx_qlen" },
1986         { "tx_ints" },
1987         { "rx_ints" },
1988         { "tx_underrun" },
1989 };
1990
1991 static void tc35815_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1992 {
1993         memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
1994 }
1995
1996 static const struct ethtool_ops tc35815_ethtool_ops = {
1997         .get_drvinfo            = tc35815_get_drvinfo,
1998         .get_link               = ethtool_op_get_link,
1999         .get_msglevel           = tc35815_get_msglevel,
2000         .set_msglevel           = tc35815_set_msglevel,
2001         .get_strings            = tc35815_get_strings,
2002         .get_sset_count         = tc35815_get_sset_count,
2003         .get_ethtool_stats      = tc35815_get_ethtool_stats,
2004         .get_link_ksettings = phy_ethtool_get_link_ksettings,
2005         .set_link_ksettings = phy_ethtool_set_link_ksettings,
2006 };
2007
2008 static int tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2009 {
2010         if (!netif_running(dev))
2011                 return -EINVAL;
2012         if (!dev->phydev)
2013                 return -ENODEV;
2014         return phy_mii_ioctl(dev->phydev, rq, cmd);
2015 }
2016
2017 static void tc35815_chip_reset(struct net_device *dev)
2018 {
2019         struct tc35815_regs __iomem *tr =
2020                 (struct tc35815_regs __iomem *)dev->base_addr;
2021         int i;
2022         /* reset the controller */
2023         tc_writel(MAC_Reset, &tr->MAC_Ctl);
2024         udelay(4); /* 3200ns */
2025         i = 0;
2026         while (tc_readl(&tr->MAC_Ctl) & MAC_Reset) {
2027                 if (i++ > 100) {
2028                         printk(KERN_ERR "%s: MAC reset failed.\n", dev->name);
2029                         break;
2030                 }
2031                 mdelay(1);
2032         }
2033         tc_writel(0, &tr->MAC_Ctl);
2034
2035         /* initialize registers to default value */
2036         tc_writel(0, &tr->DMA_Ctl);
2037         tc_writel(0, &tr->TxThrsh);
2038         tc_writel(0, &tr->TxPollCtr);
2039         tc_writel(0, &tr->RxFragSize);
2040         tc_writel(0, &tr->Int_En);
2041         tc_writel(0, &tr->FDA_Bas);
2042         tc_writel(0, &tr->FDA_Lim);
2043         tc_writel(0xffffffff, &tr->Int_Src);    /* Write 1 to clear */
2044         tc_writel(0, &tr->CAM_Ctl);
2045         tc_writel(0, &tr->Tx_Ctl);
2046         tc_writel(0, &tr->Rx_Ctl);
2047         tc_writel(0, &tr->CAM_Ena);
2048         (void)tc_readl(&tr->Miss_Cnt);  /* Read to clear */
2049
2050         /* initialize internal SRAM */
2051         tc_writel(DMA_TestMode, &tr->DMA_Ctl);
2052         for (i = 0; i < 0x1000; i += 4) {
2053                 tc_writel(i, &tr->CAM_Adr);
2054                 tc_writel(0, &tr->CAM_Data);
2055         }
2056         tc_writel(0, &tr->DMA_Ctl);
2057 }
2058
2059 static void tc35815_chip_init(struct net_device *dev)
2060 {
2061         struct tc35815_local *lp = netdev_priv(dev);
2062         struct tc35815_regs __iomem *tr =
2063                 (struct tc35815_regs __iomem *)dev->base_addr;
2064         unsigned long txctl = TX_CTL_CMD;
2065
2066         /* load station address to CAM */
2067         tc35815_set_cam_entry(dev, CAM_ENTRY_SOURCE, dev->dev_addr);
2068
2069         /* Enable CAM (broadcast and unicast) */
2070         tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena);
2071         tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl);
2072
2073         /* Use DMA_RxAlign_2 to make IP header 4-byte aligned. */
2074         if (HAVE_DMA_RXALIGN(lp))
2075                 tc_writel(DMA_BURST_SIZE | DMA_RxAlign_2, &tr->DMA_Ctl);
2076         else
2077                 tc_writel(DMA_BURST_SIZE, &tr->DMA_Ctl);
2078         tc_writel(0, &tr->TxPollCtr);   /* Batch mode */
2079         tc_writel(TX_THRESHOLD, &tr->TxThrsh);
2080         tc_writel(INT_EN_CMD, &tr->Int_En);
2081
2082         /* set queues */
2083         tc_writel(fd_virt_to_bus(lp, lp->rfd_base), &tr->FDA_Bas);
2084         tc_writel((unsigned long)lp->rfd_limit - (unsigned long)lp->rfd_base,
2085                   &tr->FDA_Lim);
2086         /*
2087          * Activation method:
2088          * First, enable the MAC Transmitter and the DMA Receive circuits.
2089          * Then enable the DMA Transmitter and the MAC Receive circuits.
2090          */
2091         tc_writel(fd_virt_to_bus(lp, lp->fbl_ptr), &tr->BLFrmPtr);      /* start DMA receiver */
2092         tc_writel(RX_CTL_CMD, &tr->Rx_Ctl);     /* start MAC receiver */
2093
2094         /* start MAC transmitter */
2095         /* TX4939 does not have EnLCarr */
2096         if (lp->chiptype == TC35815_TX4939)
2097                 txctl &= ~Tx_EnLCarr;
2098         /* WORKAROUND: ignore LostCrS in full duplex operation */
2099         if (!dev->phydev || !lp->link || lp->duplex == DUPLEX_FULL)
2100                 txctl &= ~Tx_EnLCarr;
2101         tc_writel(txctl, &tr->Tx_Ctl);
2102 }
2103
2104 #ifdef CONFIG_PM
2105 static int tc35815_suspend(struct pci_dev *pdev, pm_message_t state)
2106 {
2107         struct net_device *dev = pci_get_drvdata(pdev);
2108         struct tc35815_local *lp = netdev_priv(dev);
2109         unsigned long flags;
2110
2111         pci_save_state(pdev);
2112         if (!netif_running(dev))
2113                 return 0;
2114         netif_device_detach(dev);
2115         if (dev->phydev)
2116                 phy_stop(dev->phydev);
2117         spin_lock_irqsave(&lp->lock, flags);
2118         tc35815_chip_reset(dev);
2119         spin_unlock_irqrestore(&lp->lock, flags);
2120         pci_set_power_state(pdev, PCI_D3hot);
2121         return 0;
2122 }
2123
2124 static int tc35815_resume(struct pci_dev *pdev)
2125 {
2126         struct net_device *dev = pci_get_drvdata(pdev);
2127
2128         pci_restore_state(pdev);
2129         if (!netif_running(dev))
2130                 return 0;
2131         pci_set_power_state(pdev, PCI_D0);
2132         tc35815_restart(dev);
2133         netif_carrier_off(dev);
2134         if (dev->phydev)
2135                 phy_start(dev->phydev);
2136         netif_device_attach(dev);
2137         return 0;
2138 }
2139 #endif /* CONFIG_PM */
2140
2141 static struct pci_driver tc35815_pci_driver = {
2142         .name           = MODNAME,
2143         .id_table       = tc35815_pci_tbl,
2144         .probe          = tc35815_init_one,
2145         .remove         = tc35815_remove_one,
2146 #ifdef CONFIG_PM
2147         .suspend        = tc35815_suspend,
2148         .resume         = tc35815_resume,
2149 #endif
2150 };
2151
2152 module_param_named(speed, options.speed, int, 0);
2153 MODULE_PARM_DESC(speed, "0:auto, 10:10Mbps, 100:100Mbps");
2154 module_param_named(duplex, options.duplex, int, 0);
2155 MODULE_PARM_DESC(duplex, "0:auto, 1:half, 2:full");
2156
2157 module_pci_driver(tc35815_pci_driver);
2158 MODULE_DESCRIPTION("TOSHIBA TC35815 PCI 10M/100M Ethernet driver");
2159 MODULE_LICENSE("GPL");