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" 26static 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/init.h> 42#include <linux/netdevice.h> 43#include <linux/etherdevice.h> 44#include <linux/skbuff.h> 45#include <linux/delay.h> 46#include <linux/pci.h> 47#include <linux/phy.h> 48#include <linux/workqueue.h> 49#include <linux/platform_device.h> 50#include <asm/io.h> 51#include <asm/byteorder.h> 52 53enum tc35815_chiptype { 54 TC35815CF = 0, 55 TC35815_NWU, 56 TC35815_TX4939, 57}; 58 59/* indexed by tc35815_chiptype, above */ 60static const struct { 61 const char *name; 62} chip_info[] __devinitdata = { 63 { "TOSHIBA TC35815CF 10/100BaseTX" }, 64 { "TOSHIBA TC35815 with Wake on LAN" }, 65 { "TOSHIBA TC35815/TX4939" }, 66}; 67 68static DEFINE_PCI_DEVICE_TABLE(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}; 74MODULE_DEVICE_TABLE(pci, tc35815_pci_tbl); 75 76/* see MODULE_PARM_DESC */ 77static struct tc35815_options { 78 int speed; 79 int duplex; 80} options; 81 82/* 83 * Registers 84 */ 85struct 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 asign ------------------------------------------------------- */ 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:Interupt 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 asign ---------------------------------------------------- */ 138#define RxFrag_EnPack 0x00008000 /* 1:Enable Packing */ 139#define RxFrag_MinFragMask 0x00000ffc /* Minimum Fragment */ 140 141/* MAC_Ctl bit asign ------------------------------------------------------- */ 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 asign ------------------------------------------------------ */ 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 asign ------------------------------------------------------- */ 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 asign ------------------------------------------------------- */ 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 asign -------------------------------------------------------- */ 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 asign ------------------------------------------------------- */ 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 asign -------------------------------------------------------- */ 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 asign ------------------------------------------------------- */ 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 asign -------------------------------------------------------- */ 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 asign ------------------------------------------------------- */ 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 asign --------------------------------------------------------- */ 274#define MD_CA_PreSup 0x00001000 /* 1:Preamble Supress */ 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 descripter */ 284struct FDesc { 285 volatile __u32 FDNext; 286 volatile __u32 FDSystem; 287 volatile __u32 FDStat; 288 volatile __u32 FDCtl; 289}; 290 291/* Buffer descripter */ 292struct BDesc { 293 volatile __u32 BuffData; 294 volatile __u32 BDCtl; 295}; 296 297#define FD_ALIGN 16 298 299/* Frame Descripter bit asign ---------------------------------------------- */ 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 Descripter bit asign --------------------------------------------- */ 313#define BD_BuffLength_MASK 0x0000FFFF /* Recieve 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 occured 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 362struct TxFD { 363 struct FDesc fd; 364 struct BDesc bd; 365 struct BDesc unused; 366}; 367 368struct RxFD { 369 struct FDesc fd; 370 struct BDesc bd[0]; /* variable length */ 371}; 372 373struct 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. */ 385struct 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 struct phy_device *phy_dev; 409 int duplex; 410 int speed; 411 int link; 412 struct work_struct restart_work; 413 414 /* 415 * Transmitting: Batch Mode. 416 * 1 BD in 1 TxFD. 417 * Receiving: Non-Packing Mode. 418 * 1 circular FD for Free Buffer List. 419 * RX_BUF_NUM BD in Free Buffer FD. 420 * One Free Buffer BD has ETH_FRAME_LEN data buffer. 421 */ 422 void *fd_buf; /* for TxFD, RxFD, FrFD */ 423 dma_addr_t fd_buf_dma; 424 struct TxFD *tfd_base; 425 unsigned int tfd_start; 426 unsigned int tfd_end; 427 struct RxFD *rfd_base; 428 struct RxFD *rfd_limit; 429 struct RxFD *rfd_cur; 430 struct FrFD *fbl_ptr; 431 unsigned int fbl_count; 432 struct { 433 struct sk_buff *skb; 434 dma_addr_t skb_dma; 435 } tx_skbs[TX_FD_NUM], rx_skbs[RX_BUF_NUM]; 436 u32 msg_enable; 437 enum tc35815_chiptype chiptype; 438}; 439 440static inline dma_addr_t fd_virt_to_bus(struct tc35815_local *lp, void *virt) 441{ 442 return lp->fd_buf_dma + ((u8 *)virt - (u8 *)lp->fd_buf); 443} 444#ifdef DEBUG 445static inline void *fd_bus_to_virt(struct tc35815_local *lp, dma_addr_t bus) 446{ 447 return (void *)((u8 *)lp->fd_buf + (bus - lp->fd_buf_dma)); 448} 449#endif 450static struct sk_buff *alloc_rxbuf_skb(struct net_device *dev, 451 struct pci_dev *hwdev, 452 dma_addr_t *dma_handle) 453{ 454 struct sk_buff *skb; 455 skb = dev_alloc_skb(RX_BUF_SIZE); 456 if (!skb) 457 return NULL; 458 *dma_handle = pci_map_single(hwdev, skb->data, RX_BUF_SIZE, 459 PCI_DMA_FROMDEVICE); 460 if (pci_dma_mapping_error(hwdev, *dma_handle)) { 461 dev_kfree_skb_any(skb); 462 return NULL; 463 } 464 skb_reserve(skb, 2); /* make IP header 4byte aligned */ 465 return skb; 466} 467 468static void free_rxbuf_skb(struct pci_dev *hwdev, struct sk_buff *skb, dma_addr_t dma_handle) 469{ 470 pci_unmap_single(hwdev, dma_handle, RX_BUF_SIZE, 471 PCI_DMA_FROMDEVICE); 472 dev_kfree_skb_any(skb); 473} 474 475/* Index to functions, as function prototypes. */ 476 477static int tc35815_open(struct net_device *dev); 478static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev); 479static irqreturn_t tc35815_interrupt(int irq, void *dev_id); 480static int tc35815_rx(struct net_device *dev, int limit); 481static int tc35815_poll(struct napi_struct *napi, int budget); 482static void tc35815_txdone(struct net_device *dev); 483static int tc35815_close(struct net_device *dev); 484static struct net_device_stats *tc35815_get_stats(struct net_device *dev); 485static void tc35815_set_multicast_list(struct net_device *dev); 486static void tc35815_tx_timeout(struct net_device *dev); 487static int tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 488#ifdef CONFIG_NET_POLL_CONTROLLER 489static void tc35815_poll_controller(struct net_device *dev); 490#endif 491static const struct ethtool_ops tc35815_ethtool_ops; 492 493/* Example routines you must write ;->. */ 494static void tc35815_chip_reset(struct net_device *dev); 495static void tc35815_chip_init(struct net_device *dev); 496 497#ifdef DEBUG 498static void panic_queues(struct net_device *dev); 499#endif 500 501static void tc35815_restart_work(struct work_struct *work); 502 503static 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 520static 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 539static void tc_handle_link_change(struct net_device *dev) 540{ 541 struct tc35815_local *lp = netdev_priv(dev); 542 struct phy_device *phydev = lp->phy_dev; 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 if (phydev->duplex == DUPLEX_HALF && 569 lp->chiptype != TC35815_TX4939) 570 tc_writel(tc_readl(&tr->Tx_Ctl) | Tx_EnLCarr, 571 &tr->Tx_Ctl); 572 573 lp->speed = phydev->speed; 574 lp->duplex = phydev->duplex; 575 status_change = 1; 576 } 577 578 if (phydev->link != lp->link) { 579 if (phydev->link) { 580 /* delayed promiscuous enabling */ 581 if (dev->flags & IFF_PROMISC) 582 tc35815_set_multicast_list(dev); 583 } else { 584 lp->speed = 0; 585 lp->duplex = -1; 586 } 587 lp->link = phydev->link; 588 589 status_change = 1; 590 } 591 spin_unlock_irqrestore(&lp->lock, flags); 592 593 if (status_change && netif_msg_link(lp)) { 594 phy_print_status(phydev); 595 pr_debug("%s: MII BMCR %04x BMSR %04x LPA %04x\n", 596 dev->name, 597 phy_read(phydev, MII_BMCR), 598 phy_read(phydev, MII_BMSR), 599 phy_read(phydev, MII_LPA)); 600 } 601} 602 603static int tc_mii_probe(struct net_device *dev) 604{ 605 struct tc35815_local *lp = netdev_priv(dev); 606 struct phy_device *phydev = NULL; 607 int phy_addr; 608 u32 dropmask; 609 610 /* find the first phy */ 611 for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) { 612 if (lp->mii_bus->phy_map[phy_addr]) { 613 if (phydev) { 614 printk(KERN_ERR "%s: multiple PHYs found\n", 615 dev->name); 616 return -EINVAL; 617 } 618 phydev = lp->mii_bus->phy_map[phy_addr]; 619 break; 620 } 621 } 622 623 if (!phydev) { 624 printk(KERN_ERR "%s: no PHY found\n", dev->name); 625 return -ENODEV; 626 } 627 628 /* attach the mac to the phy */ 629 phydev = phy_connect(dev, dev_name(&phydev->dev), 630 &tc_handle_link_change, 0, 631 lp->chiptype == TC35815_TX4939 ? 632 PHY_INTERFACE_MODE_RMII : PHY_INTERFACE_MODE_MII); 633 if (IS_ERR(phydev)) { 634 printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name); 635 return PTR_ERR(phydev); 636 } 637 printk(KERN_INFO "%s: attached PHY driver [%s] " 638 "(mii_bus:phy_addr=%s, id=%x)\n", 639 dev->name, phydev->drv->name, dev_name(&phydev->dev), 640 phydev->phy_id); 641 642 /* mask with MAC supported features */ 643 phydev->supported &= PHY_BASIC_FEATURES; 644 dropmask = 0; 645 if (options.speed == 10) 646 dropmask |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full; 647 else if (options.speed == 100) 648 dropmask |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full; 649 if (options.duplex == 1) 650 dropmask |= SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Full; 651 else if (options.duplex == 2) 652 dropmask |= SUPPORTED_10baseT_Half | SUPPORTED_100baseT_Half; 653 phydev->supported &= ~dropmask; 654 phydev->advertising = phydev->supported; 655 656 lp->link = 0; 657 lp->speed = 0; 658 lp->duplex = -1; 659 lp->phy_dev = phydev; 660 661 return 0; 662} 663 664static int tc_mii_init(struct net_device *dev) 665{ 666 struct tc35815_local *lp = netdev_priv(dev); 667 int err; 668 int i; 669 670 lp->mii_bus = mdiobus_alloc(); 671 if (lp->mii_bus == NULL) { 672 err = -ENOMEM; 673 goto err_out; 674 } 675 676 lp->mii_bus->name = "tc35815_mii_bus"; 677 lp->mii_bus->read = tc_mdio_read; 678 lp->mii_bus->write = tc_mdio_write; 679 snprintf(lp->mii_bus->id, MII_BUS_ID_SIZE, "%x", 680 (lp->pci_dev->bus->number << 8) | lp->pci_dev->devfn); 681 lp->mii_bus->priv = dev; 682 lp->mii_bus->parent = &lp->pci_dev->dev; 683 lp->mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL); 684 if (!lp->mii_bus->irq) { 685 err = -ENOMEM; 686 goto err_out_free_mii_bus; 687 } 688 689 for (i = 0; i < PHY_MAX_ADDR; i++) 690 lp->mii_bus->irq[i] = PHY_POLL; 691 692 err = mdiobus_register(lp->mii_bus); 693 if (err) 694 goto err_out_free_mdio_irq; 695 err = tc_mii_probe(dev); 696 if (err) 697 goto err_out_unregister_bus; 698 return 0; 699 700err_out_unregister_bus: 701 mdiobus_unregister(lp->mii_bus); 702err_out_free_mdio_irq: 703 kfree(lp->mii_bus->irq); 704err_out_free_mii_bus: 705 mdiobus_free(lp->mii_bus); 706err_out: 707 return err; 708} 709 710#ifdef CONFIG_CPU_TX49XX 711/* 712 * Find a platform_device providing a MAC address. The platform code 713 * should provide a "tc35815-mac" device with a MAC address in its 714 * platform_data. 715 */ 716static int __devinit tc35815_mac_match(struct device *dev, void *data) 717{ 718 struct platform_device *plat_dev = to_platform_device(dev); 719 struct pci_dev *pci_dev = data; 720 unsigned int id = pci_dev->irq; 721 return !strcmp(plat_dev->name, "tc35815-mac") && plat_dev->id == id; 722} 723 724static int __devinit tc35815_read_plat_dev_addr(struct net_device *dev) 725{ 726 struct tc35815_local *lp = netdev_priv(dev); 727 struct device *pd = bus_find_device(&platform_bus_type, NULL, 728 lp->pci_dev, tc35815_mac_match); 729 if (pd) { 730 if (pd->platform_data) 731 memcpy(dev->dev_addr, pd->platform_data, ETH_ALEN); 732 put_device(pd); 733 return is_valid_ether_addr(dev->dev_addr) ? 0 : -ENODEV; 734 } 735 return -ENODEV; 736} 737#else 738static int __devinit tc35815_read_plat_dev_addr(struct net_device *dev) 739{ 740 return -ENODEV; 741} 742#endif 743 744static int __devinit tc35815_init_dev_addr(struct net_device *dev) 745{ 746 struct tc35815_regs __iomem *tr = 747 (struct tc35815_regs __iomem *)dev->base_addr; 748 int i; 749 750 while (tc_readl(&tr->PROM_Ctl) & PROM_Busy) 751 ; 752 for (i = 0; i < 6; i += 2) { 753 unsigned short data; 754 tc_writel(PROM_Busy | PROM_Read | (i / 2 + 2), &tr->PROM_Ctl); 755 while (tc_readl(&tr->PROM_Ctl) & PROM_Busy) 756 ; 757 data = tc_readl(&tr->PROM_Data); 758 dev->dev_addr[i] = data & 0xff; 759 dev->dev_addr[i+1] = data >> 8; 760 } 761 if (!is_valid_ether_addr(dev->dev_addr)) 762 return tc35815_read_plat_dev_addr(dev); 763 return 0; 764} 765 766static const struct net_device_ops tc35815_netdev_ops = { 767 .ndo_open = tc35815_open, 768 .ndo_stop = tc35815_close, 769 .ndo_start_xmit = tc35815_send_packet, 770 .ndo_get_stats = tc35815_get_stats, 771 .ndo_set_multicast_list = tc35815_set_multicast_list, 772 .ndo_tx_timeout = tc35815_tx_timeout, 773 .ndo_do_ioctl = tc35815_ioctl, 774 .ndo_validate_addr = eth_validate_addr, 775 .ndo_change_mtu = eth_change_mtu, 776 .ndo_set_mac_address = eth_mac_addr, 777#ifdef CONFIG_NET_POLL_CONTROLLER 778 .ndo_poll_controller = tc35815_poll_controller, 779#endif 780}; 781 782static int __devinit tc35815_init_one(struct pci_dev *pdev, 783 const struct pci_device_id *ent) 784{ 785 void __iomem *ioaddr = NULL; 786 struct net_device *dev; 787 struct tc35815_local *lp; 788 int rc; 789 790 static int printed_version; 791 if (!printed_version++) { 792 printk(version); 793 dev_printk(KERN_DEBUG, &pdev->dev, 794 "speed:%d duplex:%d\n", 795 options.speed, options.duplex); 796 } 797 798 if (!pdev->irq) { 799 dev_warn(&pdev->dev, "no IRQ assigned.\n"); 800 return -ENODEV; 801 } 802 803 /* dev zeroed in alloc_etherdev */ 804 dev = alloc_etherdev(sizeof(*lp)); 805 if (dev == NULL) { 806 dev_err(&pdev->dev, "unable to alloc new ethernet\n"); 807 return -ENOMEM; 808 } 809 SET_NETDEV_DEV(dev, &pdev->dev); 810 lp = netdev_priv(dev); 811 lp->dev = dev; 812 813 /* enable device (incl. PCI PM wakeup), and bus-mastering */ 814 rc = pcim_enable_device(pdev); 815 if (rc) 816 goto err_out; 817 rc = pcim_iomap_regions(pdev, 1 << 1, MODNAME); 818 if (rc) 819 goto err_out; 820 pci_set_master(pdev); 821 ioaddr = pcim_iomap_table(pdev)[1]; 822 823 /* Initialize the device structure. */ 824 dev->netdev_ops = &tc35815_netdev_ops; 825 dev->ethtool_ops = &tc35815_ethtool_ops; 826 dev->watchdog_timeo = TC35815_TX_TIMEOUT; 827 netif_napi_add(dev, &lp->napi, tc35815_poll, NAPI_WEIGHT); 828 829 dev->irq = pdev->irq; 830 dev->base_addr = (unsigned long)ioaddr; 831 832 INIT_WORK(&lp->restart_work, tc35815_restart_work); 833 spin_lock_init(&lp->lock); 834 spin_lock_init(&lp->rx_lock); 835 lp->pci_dev = pdev; 836 lp->chiptype = ent->driver_data; 837 838 lp->msg_enable = NETIF_MSG_TX_ERR | NETIF_MSG_HW | NETIF_MSG_DRV | NETIF_MSG_LINK; 839 pci_set_drvdata(pdev, dev); 840 841 /* Soft reset the chip. */ 842 tc35815_chip_reset(dev); 843 844 /* Retrieve the ethernet address. */ 845 if (tc35815_init_dev_addr(dev)) { 846 dev_warn(&pdev->dev, "not valid ether addr\n"); 847 random_ether_addr(dev->dev_addr); 848 } 849 850 rc = register_netdev(dev); 851 if (rc) 852 goto err_out; 853 854 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len); 855 printk(KERN_INFO "%s: %s at 0x%lx, %pM, IRQ %d\n", 856 dev->name, 857 chip_info[ent->driver_data].name, 858 dev->base_addr, 859 dev->dev_addr, 860 dev->irq); 861 862 rc = tc_mii_init(dev); 863 if (rc) 864 goto err_out_unregister; 865 866 return 0; 867 868err_out_unregister: 869 unregister_netdev(dev); 870err_out: 871 free_netdev(dev); 872 return rc; 873} 874 875 876static void __devexit tc35815_remove_one(struct pci_dev *pdev) 877{ 878 struct net_device *dev = pci_get_drvdata(pdev); 879 struct tc35815_local *lp = netdev_priv(dev); 880 881 phy_disconnect(lp->phy_dev); 882 mdiobus_unregister(lp->mii_bus); 883 kfree(lp->mii_bus->irq); 884 mdiobus_free(lp->mii_bus); 885 unregister_netdev(dev); 886 free_netdev(dev); 887 pci_set_drvdata(pdev, NULL); 888} 889 890static int 891tc35815_init_queues(struct net_device *dev) 892{ 893 struct tc35815_local *lp = netdev_priv(dev); 894 int i; 895 unsigned long fd_addr; 896 897 if (!lp->fd_buf) { 898 BUG_ON(sizeof(struct FDesc) + 899 sizeof(struct BDesc) * RX_BUF_NUM + 900 sizeof(struct FDesc) * RX_FD_NUM + 901 sizeof(struct TxFD) * TX_FD_NUM > 902 PAGE_SIZE * FD_PAGE_NUM); 903 904 lp->fd_buf = pci_alloc_consistent(lp->pci_dev, 905 PAGE_SIZE * FD_PAGE_NUM, 906 &lp->fd_buf_dma); 907 if (!lp->fd_buf) 908 return -ENOMEM; 909 for (i = 0; i < RX_BUF_NUM; i++) { 910 lp->rx_skbs[i].skb = 911 alloc_rxbuf_skb(dev, lp->pci_dev, 912 &lp->rx_skbs[i].skb_dma); 913 if (!lp->rx_skbs[i].skb) { 914 while (--i >= 0) { 915 free_rxbuf_skb(lp->pci_dev, 916 lp->rx_skbs[i].skb, 917 lp->rx_skbs[i].skb_dma); 918 lp->rx_skbs[i].skb = NULL; 919 } 920 pci_free_consistent(lp->pci_dev, 921 PAGE_SIZE * FD_PAGE_NUM, 922 lp->fd_buf, 923 lp->fd_buf_dma); 924 lp->fd_buf = NULL; 925 return -ENOMEM; 926 } 927 } 928 printk(KERN_DEBUG "%s: FD buf %p DataBuf", 929 dev->name, lp->fd_buf); 930 printk("\n"); 931 } else { 932 for (i = 0; i < FD_PAGE_NUM; i++) 933 clear_page((void *)((unsigned long)lp->fd_buf + 934 i * PAGE_SIZE)); 935 } 936 fd_addr = (unsigned long)lp->fd_buf; 937 938 /* Free Descriptors (for Receive) */ 939 lp->rfd_base = (struct RxFD *)fd_addr; 940 fd_addr += sizeof(struct RxFD) * RX_FD_NUM; 941 for (i = 0; i < RX_FD_NUM; i++) 942 lp->rfd_base[i].fd.FDCtl = cpu_to_le32(FD_CownsFD); 943 lp->rfd_cur = lp->rfd_base; 944 lp->rfd_limit = (struct RxFD *)fd_addr - (RX_FD_RESERVE + 1); 945 946 /* Transmit Descriptors */ 947 lp->tfd_base = (struct TxFD *)fd_addr; 948 fd_addr += sizeof(struct TxFD) * TX_FD_NUM; 949 for (i = 0; i < TX_FD_NUM; i++) { 950 lp->tfd_base[i].fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, &lp->tfd_base[i+1])); 951 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff); 952 lp->tfd_base[i].fd.FDCtl = cpu_to_le32(0); 953 } 954 lp->tfd_base[TX_FD_NUM-1].fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, &lp->tfd_base[0])); 955 lp->tfd_start = 0; 956 lp->tfd_end = 0; 957 958 /* Buffer List (for Receive) */ 959 lp->fbl_ptr = (struct FrFD *)fd_addr; 960 lp->fbl_ptr->fd.FDNext = cpu_to_le32(fd_virt_to_bus(lp, lp->fbl_ptr)); 961 lp->fbl_ptr->fd.FDCtl = cpu_to_le32(RX_BUF_NUM | FD_CownsFD); 962 /* 963 * move all allocated skbs to head of rx_skbs[] array. 964 * fbl_count mighe not be RX_BUF_NUM if alloc_rxbuf_skb() in 965 * tc35815_rx() had failed. 966 */ 967 lp->fbl_count = 0; 968 for (i = 0; i < RX_BUF_NUM; i++) { 969 if (lp->rx_skbs[i].skb) { 970 if (i != lp->fbl_count) { 971 lp->rx_skbs[lp->fbl_count].skb = 972 lp->rx_skbs[i].skb; 973 lp->rx_skbs[lp->fbl_count].skb_dma = 974 lp->rx_skbs[i].skb_dma; 975 } 976 lp->fbl_count++; 977 } 978 } 979 for (i = 0; i < RX_BUF_NUM; i++) { 980 if (i >= lp->fbl_count) { 981 lp->fbl_ptr->bd[i].BuffData = 0; 982 lp->fbl_ptr->bd[i].BDCtl = 0; 983 continue; 984 } 985 lp->fbl_ptr->bd[i].BuffData = 986 cpu_to_le32(lp->rx_skbs[i].skb_dma); 987 /* BDID is index of FrFD.bd[] */ 988 lp->fbl_ptr->bd[i].BDCtl = 989 cpu_to_le32(BD_CownsBD | (i << BD_RxBDID_SHIFT) | 990 RX_BUF_SIZE); 991 } 992 993 printk(KERN_DEBUG "%s: TxFD %p RxFD %p FrFD %p\n", 994 dev->name, lp->tfd_base, lp->rfd_base, lp->fbl_ptr); 995 return 0; 996} 997 998static void 999tc35815_clear_queues(struct net_device *dev) 1000{ 1001 struct tc35815_local *lp = netdev_priv(dev); 1002 int i; 1003 1004 for (i = 0; i < TX_FD_NUM; i++) { 1005 u32 fdsystem = le32_to_cpu(lp->tfd_base[i].fd.FDSystem); 1006 struct sk_buff *skb = 1007 fdsystem != 0xffffffff ? 1008 lp->tx_skbs[fdsystem].skb : NULL; 1009#ifdef DEBUG 1010 if (lp->tx_skbs[i].skb != skb) { 1011 printk("%s: tx_skbs mismatch(%d).\n", dev->name, i); 1012 panic_queues(dev); 1013 } 1014#else 1015 BUG_ON(lp->tx_skbs[i].skb != skb); 1016#endif 1017 if (skb) { 1018 pci_unmap_single(lp->pci_dev, lp->tx_skbs[i].skb_dma, skb->len, PCI_DMA_TODEVICE); 1019 lp->tx_skbs[i].skb = NULL; 1020 lp->tx_skbs[i].skb_dma = 0; 1021 dev_kfree_skb_any(skb); 1022 } 1023 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff); 1024 } 1025 1026 tc35815_init_queues(dev); 1027} 1028 1029static void 1030tc35815_free_queues(struct net_device *dev) 1031{ 1032 struct tc35815_local *lp = netdev_priv(dev); 1033 int i; 1034 1035 if (lp->tfd_base) { 1036 for (i = 0; i < TX_FD_NUM; i++) { 1037 u32 fdsystem = le32_to_cpu(lp->tfd_base[i].fd.FDSystem); 1038 struct sk_buff *skb = 1039 fdsystem != 0xffffffff ? 1040 lp->tx_skbs[fdsystem].skb : NULL; 1041#ifdef DEBUG 1042 if (lp->tx_skbs[i].skb != skb) { 1043 printk("%s: tx_skbs mismatch(%d).\n", dev->name, i); 1044 panic_queues(dev); 1045 } 1046#else 1047 BUG_ON(lp->tx_skbs[i].skb != skb); 1048#endif 1049 if (skb) { 1050 dev_kfree_skb(skb); 1051 pci_unmap_single(lp->pci_dev, lp->tx_skbs[i].skb_dma, skb->len, PCI_DMA_TODEVICE); 1052 lp->tx_skbs[i].skb = NULL; 1053 lp->tx_skbs[i].skb_dma = 0; 1054 } 1055 lp->tfd_base[i].fd.FDSystem = cpu_to_le32(0xffffffff); 1056 } 1057 } 1058 1059 lp->rfd_base = NULL; 1060 lp->rfd_limit = NULL; 1061 lp->rfd_cur = NULL; 1062 lp->fbl_ptr = NULL; 1063 1064 for (i = 0; i < RX_BUF_NUM; i++) { 1065 if (lp->rx_skbs[i].skb) { 1066 free_rxbuf_skb(lp->pci_dev, lp->rx_skbs[i].skb, 1067 lp->rx_skbs[i].skb_dma); 1068 lp->rx_skbs[i].skb = NULL; 1069 } 1070 } 1071 if (lp->fd_buf) { 1072 pci_free_consistent(lp->pci_dev, PAGE_SIZE * FD_PAGE_NUM, 1073 lp->fd_buf, lp->fd_buf_dma); 1074 lp->fd_buf = NULL; 1075 } 1076} 1077 1078static void 1079dump_txfd(struct TxFD *fd) 1080{ 1081 printk("TxFD(%p): %08x %08x %08x %08x\n", fd, 1082 le32_to_cpu(fd->fd.FDNext), 1083 le32_to_cpu(fd->fd.FDSystem), 1084 le32_to_cpu(fd->fd.FDStat), 1085 le32_to_cpu(fd->fd.FDCtl)); 1086 printk("BD: "); 1087 printk(" %08x %08x", 1088 le32_to_cpu(fd->bd.BuffData), 1089 le32_to_cpu(fd->bd.BDCtl)); 1090 printk("\n"); 1091} 1092 1093static int 1094dump_rxfd(struct RxFD *fd) 1095{ 1096 int i, bd_count = (le32_to_cpu(fd->fd.FDCtl) & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT; 1097 if (bd_count > 8) 1098 bd_count = 8; 1099 printk("RxFD(%p): %08x %08x %08x %08x\n", fd, 1100 le32_to_cpu(fd->fd.FDNext), 1101 le32_to_cpu(fd->fd.FDSystem), 1102 le32_to_cpu(fd->fd.FDStat), 1103 le32_to_cpu(fd->fd.FDCtl)); 1104 if (le32_to_cpu(fd->fd.FDCtl) & FD_CownsFD) 1105 return 0; 1106 printk("BD: "); 1107 for (i = 0; i < bd_count; i++) 1108 printk(" %08x %08x", 1109 le32_to_cpu(fd->bd[i].BuffData), 1110 le32_to_cpu(fd->bd[i].BDCtl)); 1111 printk("\n"); 1112 return bd_count; 1113} 1114 1115#ifdef DEBUG 1116static void 1117dump_frfd(struct FrFD *fd) 1118{ 1119 int i; 1120 printk("FrFD(%p): %08x %08x %08x %08x\n", fd, 1121 le32_to_cpu(fd->fd.FDNext), 1122 le32_to_cpu(fd->fd.FDSystem), 1123 le32_to_cpu(fd->fd.FDStat), 1124 le32_to_cpu(fd->fd.FDCtl)); 1125 printk("BD: "); 1126 for (i = 0; i < RX_BUF_NUM; i++) 1127 printk(" %08x %08x", 1128 le32_to_cpu(fd->bd[i].BuffData), 1129 le32_to_cpu(fd->bd[i].BDCtl)); 1130 printk("\n"); 1131} 1132 1133static void 1134panic_queues(struct net_device *dev) 1135{ 1136 struct tc35815_local *lp = netdev_priv(dev); 1137 int i; 1138 1139 printk("TxFD base %p, start %u, end %u\n", 1140 lp->tfd_base, lp->tfd_start, lp->tfd_end); 1141 printk("RxFD base %p limit %p cur %p\n", 1142 lp->rfd_base, lp->rfd_limit, lp->rfd_cur); 1143 printk("FrFD %p\n", lp->fbl_ptr); 1144 for (i = 0; i < TX_FD_NUM; i++) 1145 dump_txfd(&lp->tfd_base[i]); 1146 for (i = 0; i < RX_FD_NUM; i++) { 1147 int bd_count = dump_rxfd(&lp->rfd_base[i]); 1148 i += (bd_count + 1) / 2; /* skip BDs */ 1149 } 1150 dump_frfd(lp->fbl_ptr); 1151 panic("%s: Illegal queue state.", dev->name); 1152} 1153#endif 1154 1155static void print_eth(const u8 *add) 1156{ 1157 printk(KERN_DEBUG "print_eth(%p)\n", add); 1158 printk(KERN_DEBUG " %pM => %pM : %02x%02x\n", 1159 add + 6, add, add[12], add[13]); 1160} 1161 1162static int tc35815_tx_full(struct net_device *dev) 1163{ 1164 struct tc35815_local *lp = netdev_priv(dev); 1165 return ((lp->tfd_start + 1) % TX_FD_NUM == lp->tfd_end); 1166} 1167 1168static void tc35815_restart(struct net_device *dev) 1169{ 1170 struct tc35815_local *lp = netdev_priv(dev); 1171 1172 if (lp->phy_dev) { 1173 int timeout; 1174 1175 phy_write(lp->phy_dev, MII_BMCR, BMCR_RESET); 1176 timeout = 100; 1177 while (--timeout) { 1178 if (!(phy_read(lp->phy_dev, MII_BMCR) & BMCR_RESET)) 1179 break; 1180 udelay(1); 1181 } 1182 if (!timeout) 1183 printk(KERN_ERR "%s: BMCR reset failed.\n", dev->name); 1184 } 1185 1186 spin_lock_bh(&lp->rx_lock); 1187 spin_lock_irq(&lp->lock); 1188 tc35815_chip_reset(dev); 1189 tc35815_clear_queues(dev); 1190 tc35815_chip_init(dev); 1191 /* Reconfigure CAM again since tc35815_chip_init() initialize it. */ 1192 tc35815_set_multicast_list(dev); 1193 spin_unlock_irq(&lp->lock); 1194 spin_unlock_bh(&lp->rx_lock); 1195 1196 netif_wake_queue(dev); 1197} 1198 1199static void tc35815_restart_work(struct work_struct *work) 1200{ 1201 struct tc35815_local *lp = 1202 container_of(work, struct tc35815_local, restart_work); 1203 struct net_device *dev = lp->dev; 1204 1205 tc35815_restart(dev); 1206} 1207 1208static void tc35815_schedule_restart(struct net_device *dev) 1209{ 1210 struct tc35815_local *lp = netdev_priv(dev); 1211 struct tc35815_regs __iomem *tr = 1212 (struct tc35815_regs __iomem *)dev->base_addr; 1213 unsigned long flags; 1214 1215 /* disable interrupts */ 1216 spin_lock_irqsave(&lp->lock, flags); 1217 tc_writel(0, &tr->Int_En); 1218 tc_writel(tc_readl(&tr->DMA_Ctl) | DMA_IntMask, &tr->DMA_Ctl); 1219 schedule_work(&lp->restart_work); 1220 spin_unlock_irqrestore(&lp->lock, flags); 1221} 1222 1223static void tc35815_tx_timeout(struct net_device *dev) 1224{ 1225 struct tc35815_regs __iomem *tr = 1226 (struct tc35815_regs __iomem *)dev->base_addr; 1227 1228 printk(KERN_WARNING "%s: transmit timed out, status %#x\n", 1229 dev->name, tc_readl(&tr->Tx_Stat)); 1230 1231 /* Try to restart the adaptor. */ 1232 tc35815_schedule_restart(dev); 1233 dev->stats.tx_errors++; 1234} 1235 1236/* 1237 * Open/initialize the controller. This is called (in the current kernel) 1238 * sometime after booting when the 'ifconfig' program is run. 1239 * 1240 * This routine should set everything up anew at each open, even 1241 * registers that "should" only need to be set once at boot, so that 1242 * there is non-reboot way to recover if something goes wrong. 1243 */ 1244static int 1245tc35815_open(struct net_device *dev) 1246{ 1247 struct tc35815_local *lp = netdev_priv(dev); 1248 1249 /* 1250 * This is used if the interrupt line can turned off (shared). 1251 * See 3c503.c for an example of selecting the IRQ at config-time. 1252 */ 1253 if (request_irq(dev->irq, tc35815_interrupt, IRQF_SHARED, 1254 dev->name, dev)) 1255 return -EAGAIN; 1256 1257 tc35815_chip_reset(dev); 1258 1259 if (tc35815_init_queues(dev) != 0) { 1260 free_irq(dev->irq, dev); 1261 return -EAGAIN; 1262 } 1263 1264 napi_enable(&lp->napi); 1265 1266 /* Reset the hardware here. Don't forget to set the station address. */ 1267 spin_lock_irq(&lp->lock); 1268 tc35815_chip_init(dev); 1269 spin_unlock_irq(&lp->lock); 1270 1271 netif_carrier_off(dev); 1272 /* schedule a link state check */ 1273 phy_start(lp->phy_dev); 1274 1275 /* We are now ready to accept transmit requeusts from 1276 * the queueing layer of the networking. 1277 */ 1278 netif_start_queue(dev); 1279 1280 return 0; 1281} 1282 1283/* This will only be invoked if your driver is _not_ in XOFF state. 1284 * What this means is that you need not check it, and that this 1285 * invariant will hold if you make sure that the netif_*_queue() 1286 * calls are done at the proper times. 1287 */ 1288static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev) 1289{ 1290 struct tc35815_local *lp = netdev_priv(dev); 1291 struct TxFD *txfd; 1292 unsigned long flags; 1293 1294 /* If some error occurs while trying to transmit this 1295 * packet, you should return '1' from this function. 1296 * In such a case you _may not_ do anything to the 1297 * SKB, it is still owned by the network queueing 1298 * layer when an error is returned. This means you 1299 * may not modify any SKB fields, you may not free 1300 * the SKB, etc. 1301 */ 1302 1303 /* This is the most common case for modern hardware. 1304 * The spinlock protects this code from the TX complete 1305 * hardware interrupt handler. Queue flow control is 1306 * thus managed under this lock as well. 1307 */ 1308 spin_lock_irqsave(&lp->lock, flags); 1309 1310 /* failsafe... (handle txdone now if half of FDs are used) */ 1311 if ((lp->tfd_start + TX_FD_NUM - lp->tfd_end) % TX_FD_NUM > 1312 TX_FD_NUM / 2) 1313 tc35815_txdone(dev); 1314 1315 if (netif_msg_pktdata(lp)) 1316 print_eth(skb->data); 1317#ifdef DEBUG 1318 if (lp->tx_skbs[lp->tfd_start].skb) { 1319 printk("%s: tx_skbs conflict.\n", dev->name); 1320 panic_queues(dev); 1321 } 1322#else 1323 BUG_ON(lp->tx_skbs[lp->tfd_start].skb); 1324#endif 1325 lp->tx_skbs[lp->tfd_start].skb = skb; 1326 lp->tx_skbs[lp->tfd_start].skb_dma = pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE); 1327 1328 /*add to ring */ 1329 txfd = &lp->tfd_base[lp->tfd_start]; 1330 txfd->bd.BuffData = cpu_to_le32(lp->tx_skbs[lp->tfd_start].skb_dma); 1331 txfd->bd.BDCtl = cpu_to_le32(skb->len); 1332 txfd->fd.FDSystem = cpu_to_le32(lp->tfd_start); 1333 txfd->fd.FDCtl = cpu_to_le32(FD_CownsFD | (1 << FD_BDCnt_SHIFT)); 1334 1335 if (lp->tfd_start == lp->tfd_end) { 1336 struct tc35815_regs __iomem *tr = 1337 (struct tc35815_regs __iomem *)dev->base_addr; 1338 /* Start DMA Transmitter. */ 1339 txfd->fd.FDNext |= cpu_to_le32(FD_Next_EOL); 1340 txfd->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx); 1341 if (netif_msg_tx_queued(lp)) { 1342 printk("%s: starting TxFD.\n", dev->name); 1343 dump_txfd(txfd); 1344 } 1345 tc_writel(fd_virt_to_bus(lp, txfd), &tr->TxFrmPtr); 1346 } else { 1347 txfd->fd.FDNext &= cpu_to_le32(~FD_Next_EOL); 1348 if (netif_msg_tx_queued(lp)) { 1349 printk("%s: queueing TxFD.\n", dev->name); 1350 dump_txfd(txfd); 1351 } 1352 } 1353 lp->tfd_start = (lp->tfd_start + 1) % TX_FD_NUM; 1354 1355 /* If we just used up the very last entry in the 1356 * TX ring on this device, tell the queueing 1357 * layer to send no more. 1358 */ 1359 if (tc35815_tx_full(dev)) { 1360 if (netif_msg_tx_queued(lp)) 1361 printk(KERN_WARNING "%s: TxFD Exhausted.\n", dev->name); 1362 netif_stop_queue(dev); 1363 } 1364 1365 /* When the TX completion hw interrupt arrives, this 1366 * is when the transmit statistics are updated. 1367 */ 1368 1369 spin_unlock_irqrestore(&lp->lock, flags); 1370 return NETDEV_TX_OK; 1371} 1372 1373#define FATAL_ERROR_INT \ 1374 (Int_IntPCI | Int_DmParErr | Int_IntNRAbt) 1375static void tc35815_fatal_error_interrupt(struct net_device *dev, u32 status) 1376{ 1377 static int count; 1378 printk(KERN_WARNING "%s: Fatal Error Intterrupt (%#x):", 1379 dev->name, status); 1380 if (status & Int_IntPCI) 1381 printk(" IntPCI"); 1382 if (status & Int_DmParErr) 1383 printk(" DmParErr"); 1384 if (status & Int_IntNRAbt) 1385 printk(" IntNRAbt"); 1386 printk("\n"); 1387 if (count++ > 100) 1388 panic("%s: Too many fatal errors.", dev->name); 1389 printk(KERN_WARNING "%s: Resetting ...\n", dev->name); 1390 /* Try to restart the adaptor. */ 1391 tc35815_schedule_restart(dev); 1392} 1393 1394static int tc35815_do_interrupt(struct net_device *dev, u32 status, int limit) 1395{ 1396 struct tc35815_local *lp = netdev_priv(dev); 1397 int ret = -1; 1398 1399 /* Fatal errors... */ 1400 if (status & FATAL_ERROR_INT) { 1401 tc35815_fatal_error_interrupt(dev, status); 1402 return 0; 1403 } 1404 /* recoverable errors */ 1405 if (status & Int_IntFDAEx) { 1406 if (netif_msg_rx_err(lp)) 1407 dev_warn(&dev->dev, 1408 "Free Descriptor Area Exhausted (%#x).\n", 1409 status); 1410 dev->stats.rx_dropped++; 1411 ret = 0; 1412 } 1413 if (status & Int_IntBLEx) { 1414 if (netif_msg_rx_err(lp)) 1415 dev_warn(&dev->dev, 1416 "Buffer List Exhausted (%#x).\n", 1417 status); 1418 dev->stats.rx_dropped++; 1419 ret = 0; 1420 } 1421 if (status & Int_IntExBD) { 1422 if (netif_msg_rx_err(lp)) 1423 dev_warn(&dev->dev, 1424 "Excessive Buffer Descriptiors (%#x).\n", 1425 status); 1426 dev->stats.rx_length_errors++; 1427 ret = 0; 1428 } 1429 1430 /* normal notification */ 1431 if (status & Int_IntMacRx) { 1432 /* Got a packet(s). */ 1433 ret = tc35815_rx(dev, limit); 1434 lp->lstats.rx_ints++; 1435 } 1436 if (status & Int_IntMacTx) { 1437 /* Transmit complete. */ 1438 lp->lstats.tx_ints++; 1439 spin_lock_irq(&lp->lock); 1440 tc35815_txdone(dev); 1441 spin_unlock_irq(&lp->lock); 1442 if (ret < 0) 1443 ret = 0; 1444 } 1445 return ret; 1446} 1447 1448/* 1449 * The typical workload of the driver: 1450 * Handle the network interface interrupts. 1451 */ 1452static irqreturn_t tc35815_interrupt(int irq, void *dev_id) 1453{ 1454 struct net_device *dev = dev_id; 1455 struct tc35815_local *lp = netdev_priv(dev); 1456 struct tc35815_regs __iomem *tr = 1457 (struct tc35815_regs __iomem *)dev->base_addr; 1458 u32 dmactl = tc_readl(&tr->DMA_Ctl); 1459 1460 if (!(dmactl & DMA_IntMask)) { 1461 /* disable interrupts */ 1462 tc_writel(dmactl | DMA_IntMask, &tr->DMA_Ctl); 1463 if (napi_schedule_prep(&lp->napi)) 1464 __napi_schedule(&lp->napi); 1465 else { 1466 printk(KERN_ERR "%s: interrupt taken in poll\n", 1467 dev->name); 1468 BUG(); 1469 } 1470 (void)tc_readl(&tr->Int_Src); /* flush */ 1471 return IRQ_HANDLED; 1472 } 1473 return IRQ_NONE; 1474} 1475 1476#ifdef CONFIG_NET_POLL_CONTROLLER 1477static void tc35815_poll_controller(struct net_device *dev) 1478{ 1479 disable_irq(dev->irq); 1480 tc35815_interrupt(dev->irq, dev); 1481 enable_irq(dev->irq); 1482} 1483#endif 1484 1485/* We have a good packet(s), get it/them out of the buffers. */ 1486static int 1487tc35815_rx(struct net_device *dev, int limit) 1488{ 1489 struct tc35815_local *lp = netdev_priv(dev); 1490 unsigned int fdctl; 1491 int i; 1492 int received = 0; 1493 1494 while (!((fdctl = le32_to_cpu(lp->rfd_cur->fd.FDCtl)) & FD_CownsFD)) { 1495 int status = le32_to_cpu(lp->rfd_cur->fd.FDStat); 1496 int pkt_len = fdctl & FD_FDLength_MASK; 1497 int bd_count = (fdctl & FD_BDCnt_MASK) >> FD_BDCnt_SHIFT; 1498#ifdef DEBUG 1499 struct RxFD *next_rfd; 1500#endif 1501#if (RX_CTL_CMD & Rx_StripCRC) == 0 1502 pkt_len -= ETH_FCS_LEN; 1503#endif 1504 1505 if (netif_msg_rx_status(lp)) 1506 dump_rxfd(lp->rfd_cur); 1507 if (status & Rx_Good) { 1508 struct sk_buff *skb; 1509 unsigned char *data; 1510 int cur_bd; 1511 1512 if (--limit < 0) 1513 break; 1514 BUG_ON(bd_count > 1); 1515 cur_bd = (le32_to_cpu(lp->rfd_cur->bd[0].BDCtl) 1516 & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT; 1517#ifdef DEBUG 1518 if (cur_bd >= RX_BUF_NUM) { 1519 printk("%s: invalid BDID.\n", dev->name); 1520 panic_queues(dev); 1521 } 1522 BUG_ON(lp->rx_skbs[cur_bd].skb_dma != 1523 (le32_to_cpu(lp->rfd_cur->bd[0].BuffData) & ~3)); 1524 if (!lp->rx_skbs[cur_bd].skb) { 1525 printk("%s: NULL skb.\n", dev->name); 1526 panic_queues(dev); 1527 } 1528#else 1529 BUG_ON(cur_bd >= RX_BUF_NUM); 1530#endif 1531 skb = lp->rx_skbs[cur_bd].skb; 1532 prefetch(skb->data); 1533 lp->rx_skbs[cur_bd].skb = NULL; 1534 pci_unmap_single(lp->pci_dev, 1535 lp->rx_skbs[cur_bd].skb_dma, 1536 RX_BUF_SIZE, PCI_DMA_FROMDEVICE); 1537 if (!HAVE_DMA_RXALIGN(lp) && NET_IP_ALIGN) 1538 memmove(skb->data, skb->data - NET_IP_ALIGN, 1539 pkt_len); 1540 data = skb_put(skb, pkt_len); 1541 if (netif_msg_pktdata(lp)) 1542 print_eth(data); 1543 skb->protocol = eth_type_trans(skb, dev); 1544 netif_receive_skb(skb); 1545 received++; 1546 dev->stats.rx_packets++; 1547 dev->stats.rx_bytes += pkt_len; 1548 } else { 1549 dev->stats.rx_errors++; 1550 if (netif_msg_rx_err(lp)) 1551 dev_info(&dev->dev, "Rx error (status %x)\n", 1552 status & Rx_Stat_Mask); 1553 if ((status & Rx_LongErr) && (status & Rx_CRCErr)) { 1554 status &= ~(Rx_LongErr|Rx_CRCErr); 1555 status |= Rx_Over; 1556 } 1557 if (status & Rx_LongErr) 1558 dev->stats.rx_length_errors++; 1559 if (status & Rx_Over) 1560 dev->stats.rx_fifo_errors++; 1561 if (status & Rx_CRCErr) 1562 dev->stats.rx_crc_errors++; 1563 if (status & Rx_Align) 1564 dev->stats.rx_frame_errors++; 1565 } 1566 1567 if (bd_count > 0) { 1568 /* put Free Buffer back to controller */ 1569 int bdctl = le32_to_cpu(lp->rfd_cur->bd[bd_count - 1].BDCtl); 1570 unsigned char id = 1571 (bdctl & BD_RxBDID_MASK) >> BD_RxBDID_SHIFT; 1572#ifdef DEBUG 1573 if (id >= RX_BUF_NUM) { 1574 printk("%s: invalid BDID.\n", dev->name); 1575 panic_queues(dev); 1576 } 1577#else 1578 BUG_ON(id >= RX_BUF_NUM); 1579#endif 1580 /* free old buffers */ 1581 lp->fbl_count--; 1582 while (lp->fbl_count < RX_BUF_NUM) 1583 { 1584 unsigned char curid = 1585 (id + 1 + lp->fbl_count) % RX_BUF_NUM; 1586 struct BDesc *bd = &lp->fbl_ptr->bd[curid]; 1587#ifdef DEBUG 1588 bdctl = le32_to_cpu(bd->BDCtl); 1589 if (bdctl & BD_CownsBD) { 1590 printk("%s: Freeing invalid BD.\n", 1591 dev->name); 1592 panic_queues(dev); 1593 } 1594#endif 1595 /* pass BD to controller */ 1596 if (!lp->rx_skbs[curid].skb) { 1597 lp->rx_skbs[curid].skb = 1598 alloc_rxbuf_skb(dev, 1599 lp->pci_dev, 1600 &lp->rx_skbs[curid].skb_dma); 1601 if (!lp->rx_skbs[curid].skb) 1602 break; /* try on next reception */ 1603 bd->BuffData = cpu_to_le32(lp->rx_skbs[curid].skb_dma); 1604 } 1605 /* Note: BDLength was modified by chip. */ 1606 bd->BDCtl = cpu_to_le32(BD_CownsBD | 1607 (curid << BD_RxBDID_SHIFT) | 1608 RX_BUF_SIZE); 1609 lp->fbl_count++; 1610 } 1611 } 1612 1613 /* put RxFD back to controller */ 1614#ifdef DEBUG 1615 next_rfd = fd_bus_to_virt(lp, 1616 le32_to_cpu(lp->rfd_cur->fd.FDNext)); 1617 if (next_rfd < lp->rfd_base || next_rfd > lp->rfd_limit) { 1618 printk("%s: RxFD FDNext invalid.\n", dev->name); 1619 panic_queues(dev); 1620 } 1621#endif 1622 for (i = 0; i < (bd_count + 1) / 2 + 1; i++) { 1623 /* pass FD to controller */ 1624#ifdef DEBUG 1625 lp->rfd_cur->fd.FDNext = cpu_to_le32(0xdeaddead); 1626#else 1627 lp->rfd_cur->fd.FDNext = cpu_to_le32(FD_Next_EOL); 1628#endif 1629 lp->rfd_cur->fd.FDCtl = cpu_to_le32(FD_CownsFD); 1630 lp->rfd_cur++; 1631 } 1632 if (lp->rfd_cur > lp->rfd_limit) 1633 lp->rfd_cur = lp->rfd_base; 1634#ifdef DEBUG 1635 if (lp->rfd_cur != next_rfd) 1636 printk("rfd_cur = %p, next_rfd %p\n", 1637 lp->rfd_cur, next_rfd); 1638#endif 1639 } 1640 1641 return received; 1642} 1643 1644static int tc35815_poll(struct napi_struct *napi, int budget) 1645{ 1646 struct tc35815_local *lp = container_of(napi, struct tc35815_local, napi); 1647 struct net_device *dev = lp->dev; 1648 struct tc35815_regs __iomem *tr = 1649 (struct tc35815_regs __iomem *)dev->base_addr; 1650 int received = 0, handled; 1651 u32 status; 1652 1653 spin_lock(&lp->rx_lock); 1654 status = tc_readl(&tr->Int_Src); 1655 do { 1656 /* BLEx, FDAEx will be cleared later */ 1657 tc_writel(status & ~(Int_BLEx | Int_FDAEx), 1658 &tr->Int_Src); /* write to clear */ 1659 1660 handled = tc35815_do_interrupt(dev, status, budget - received); 1661 if (status & (Int_BLEx | Int_FDAEx)) 1662 tc_writel(status & (Int_BLEx | Int_FDAEx), 1663 &tr->Int_Src); 1664 if (handled >= 0) { 1665 received += handled; 1666 if (received >= budget) 1667 break; 1668 } 1669 status = tc_readl(&tr->Int_Src); 1670 } while (status); 1671 spin_unlock(&lp->rx_lock); 1672 1673 if (received < budget) { 1674 napi_complete(napi); 1675 /* enable interrupts */ 1676 tc_writel(tc_readl(&tr->DMA_Ctl) & ~DMA_IntMask, &tr->DMA_Ctl); 1677 } 1678 return received; 1679} 1680 1681#define TX_STA_ERR (Tx_ExColl|Tx_Under|Tx_Defer|Tx_NCarr|Tx_LateColl|Tx_TxPar|Tx_SQErr) 1682 1683static void 1684tc35815_check_tx_stat(struct net_device *dev, int status) 1685{ 1686 struct tc35815_local *lp = netdev_priv(dev); 1687 const char *msg = NULL; 1688 1689 /* count collisions */ 1690 if (status & Tx_ExColl) 1691 dev->stats.collisions += 16; 1692 if (status & Tx_TxColl_MASK) 1693 dev->stats.collisions += status & Tx_TxColl_MASK; 1694 1695 /* TX4939 does not have NCarr */ 1696 if (lp->chiptype == TC35815_TX4939) 1697 status &= ~Tx_NCarr; 1698 if (!lp->link || lp->duplex == DUPLEX_FULL) 1699 status &= ~Tx_NCarr; 1700 1701 if (!(status & TX_STA_ERR)) { 1702 /* no error. */ 1703 dev->stats.tx_packets++; 1704 return; 1705 } 1706 1707 dev->stats.tx_errors++; 1708 if (status & Tx_ExColl) { 1709 dev->stats.tx_aborted_errors++; 1710 msg = "Excessive Collision."; 1711 } 1712 if (status & Tx_Under) { 1713 dev->stats.tx_fifo_errors++; 1714 msg = "Tx FIFO Underrun."; 1715 if (lp->lstats.tx_underrun < TX_THRESHOLD_KEEP_LIMIT) { 1716 lp->lstats.tx_underrun++; 1717 if (lp->lstats.tx_underrun >= TX_THRESHOLD_KEEP_LIMIT) { 1718 struct tc35815_regs __iomem *tr = 1719 (struct tc35815_regs __iomem *)dev->base_addr; 1720 tc_writel(TX_THRESHOLD_MAX, &tr->TxThrsh); 1721 msg = "Tx FIFO Underrun.Change Tx threshold to max."; 1722 } 1723 } 1724 } 1725 if (status & Tx_Defer) { 1726 dev->stats.tx_fifo_errors++; 1727 msg = "Excessive Deferral."; 1728 } 1729 if (status & Tx_NCarr) { 1730 dev->stats.tx_carrier_errors++; 1731 msg = "Lost Carrier Sense."; 1732 } 1733 if (status & Tx_LateColl) { 1734 dev->stats.tx_aborted_errors++; 1735 msg = "Late Collision."; 1736 } 1737 if (status & Tx_TxPar) { 1738 dev->stats.tx_fifo_errors++; 1739 msg = "Transmit Parity Error."; 1740 } 1741 if (status & Tx_SQErr) { 1742 dev->stats.tx_heartbeat_errors++; 1743 msg = "Signal Quality Error."; 1744 } 1745 if (msg && netif_msg_tx_err(lp)) 1746 printk(KERN_WARNING "%s: %s (%#x)\n", dev->name, msg, status); 1747} 1748 1749/* This handles TX complete events posted by the device 1750 * via interrupts. 1751 */ 1752static void 1753tc35815_txdone(struct net_device *dev) 1754{ 1755 struct tc35815_local *lp = netdev_priv(dev); 1756 struct TxFD *txfd; 1757 unsigned int fdctl; 1758 1759 txfd = &lp->tfd_base[lp->tfd_end]; 1760 while (lp->tfd_start != lp->tfd_end && 1761 !((fdctl = le32_to_cpu(txfd->fd.FDCtl)) & FD_CownsFD)) { 1762 int status = le32_to_cpu(txfd->fd.FDStat); 1763 struct sk_buff *skb; 1764 unsigned long fdnext = le32_to_cpu(txfd->fd.FDNext); 1765 u32 fdsystem = le32_to_cpu(txfd->fd.FDSystem); 1766 1767 if (netif_msg_tx_done(lp)) { 1768 printk("%s: complete TxFD.\n", dev->name); 1769 dump_txfd(txfd); 1770 } 1771 tc35815_check_tx_stat(dev, status); 1772 1773 skb = fdsystem != 0xffffffff ? 1774 lp->tx_skbs[fdsystem].skb : NULL; 1775#ifdef DEBUG 1776 if (lp->tx_skbs[lp->tfd_end].skb != skb) { 1777 printk("%s: tx_skbs mismatch.\n", dev->name); 1778 panic_queues(dev); 1779 } 1780#else 1781 BUG_ON(lp->tx_skbs[lp->tfd_end].skb != skb); 1782#endif 1783 if (skb) { 1784 dev->stats.tx_bytes += skb->len; 1785 pci_unmap_single(lp->pci_dev, lp->tx_skbs[lp->tfd_end].skb_dma, skb->len, PCI_DMA_TODEVICE); 1786 lp->tx_skbs[lp->tfd_end].skb = NULL; 1787 lp->tx_skbs[lp->tfd_end].skb_dma = 0; 1788 dev_kfree_skb_any(skb); 1789 } 1790 txfd->fd.FDSystem = cpu_to_le32(0xffffffff); 1791 1792 lp->tfd_end = (lp->tfd_end + 1) % TX_FD_NUM; 1793 txfd = &lp->tfd_base[lp->tfd_end]; 1794#ifdef DEBUG 1795 if ((fdnext & ~FD_Next_EOL) != fd_virt_to_bus(lp, txfd)) { 1796 printk("%s: TxFD FDNext invalid.\n", dev->name); 1797 panic_queues(dev); 1798 } 1799#endif 1800 if (fdnext & FD_Next_EOL) { 1801 /* DMA Transmitter has been stopping... */ 1802 if (lp->tfd_end != lp->tfd_start) { 1803 struct tc35815_regs __iomem *tr = 1804 (struct tc35815_regs __iomem *)dev->base_addr; 1805 int head = (lp->tfd_start + TX_FD_NUM - 1) % TX_FD_NUM; 1806 struct TxFD *txhead = &lp->tfd_base[head]; 1807 int qlen = (lp->tfd_start + TX_FD_NUM 1808 - lp->tfd_end) % TX_FD_NUM; 1809 1810#ifdef DEBUG 1811 if (!(le32_to_cpu(txfd->fd.FDCtl) & FD_CownsFD)) { 1812 printk("%s: TxFD FDCtl invalid.\n", dev->name); 1813 panic_queues(dev); 1814 } 1815#endif 1816 /* log max queue length */ 1817 if (lp->lstats.max_tx_qlen < qlen) 1818 lp->lstats.max_tx_qlen = qlen; 1819 1820 1821 /* start DMA Transmitter again */ 1822 txhead->fd.FDNext |= cpu_to_le32(FD_Next_EOL); 1823 txhead->fd.FDCtl |= cpu_to_le32(FD_FrmOpt_IntTx); 1824 if (netif_msg_tx_queued(lp)) { 1825 printk("%s: start TxFD on queue.\n", 1826 dev->name); 1827 dump_txfd(txfd); 1828 } 1829 tc_writel(fd_virt_to_bus(lp, txfd), &tr->TxFrmPtr); 1830 } 1831 break; 1832 } 1833 } 1834 1835 /* If we had stopped the queue due to a "tx full" 1836 * condition, and space has now been made available, 1837 * wake up the queue. 1838 */ 1839 if (netif_queue_stopped(dev) && !tc35815_tx_full(dev)) 1840 netif_wake_queue(dev); 1841} 1842 1843/* The inverse routine to tc35815_open(). */ 1844static int 1845tc35815_close(struct net_device *dev) 1846{ 1847 struct tc35815_local *lp = netdev_priv(dev); 1848 1849 netif_stop_queue(dev); 1850 napi_disable(&lp->napi); 1851 if (lp->phy_dev) 1852 phy_stop(lp->phy_dev); 1853 cancel_work_sync(&lp->restart_work); 1854 1855 /* Flush the Tx and disable Rx here. */ 1856 tc35815_chip_reset(dev); 1857 free_irq(dev->irq, dev); 1858 1859 tc35815_free_queues(dev); 1860 1861 return 0; 1862 1863} 1864 1865/* 1866 * Get the current statistics. 1867 * This may be called with the card open or closed. 1868 */ 1869static struct net_device_stats *tc35815_get_stats(struct net_device *dev) 1870{ 1871 struct tc35815_regs __iomem *tr = 1872 (struct tc35815_regs __iomem *)dev->base_addr; 1873 if (netif_running(dev)) 1874 /* Update the statistics from the device registers. */ 1875 dev->stats.rx_missed_errors += tc_readl(&tr->Miss_Cnt); 1876 1877 return &dev->stats; 1878} 1879 1880static void tc35815_set_cam_entry(struct net_device *dev, int index, unsigned char *addr) 1881{ 1882 struct tc35815_local *lp = netdev_priv(dev); 1883 struct tc35815_regs __iomem *tr = 1884 (struct tc35815_regs __iomem *)dev->base_addr; 1885 int cam_index = index * 6; 1886 u32 cam_data; 1887 u32 saved_addr; 1888 1889 saved_addr = tc_readl(&tr->CAM_Adr); 1890 1891 if (netif_msg_hw(lp)) 1892 printk(KERN_DEBUG "%s: CAM %d: %pM\n", 1893 dev->name, index, addr); 1894 if (index & 1) { 1895 /* read modify write */ 1896 tc_writel(cam_index - 2, &tr->CAM_Adr); 1897 cam_data = tc_readl(&tr->CAM_Data) & 0xffff0000; 1898 cam_data |= addr[0] << 8 | addr[1]; 1899 tc_writel(cam_data, &tr->CAM_Data); 1900 /* write whole word */ 1901 tc_writel(cam_index + 2, &tr->CAM_Adr); 1902 cam_data = (addr[2] << 24) | (addr[3] << 16) | (addr[4] << 8) | addr[5]; 1903 tc_writel(cam_data, &tr->CAM_Data); 1904 } else { 1905 /* write whole word */ 1906 tc_writel(cam_index, &tr->CAM_Adr); 1907 cam_data = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]; 1908 tc_writel(cam_data, &tr->CAM_Data); 1909 /* read modify write */ 1910 tc_writel(cam_index + 4, &tr->CAM_Adr); 1911 cam_data = tc_readl(&tr->CAM_Data) & 0x0000ffff; 1912 cam_data |= addr[4] << 24 | (addr[5] << 16); 1913 tc_writel(cam_data, &tr->CAM_Data); 1914 } 1915 1916 tc_writel(saved_addr, &tr->CAM_Adr); 1917} 1918 1919 1920/* 1921 * Set or clear the multicast filter for this adaptor. 1922 * num_addrs == -1 Promiscuous mode, receive all packets 1923 * num_addrs == 0 Normal mode, clear multicast list 1924 * num_addrs > 0 Multicast mode, receive normal and MC packets, 1925 * and do best-effort filtering. 1926 */ 1927static void 1928tc35815_set_multicast_list(struct net_device *dev) 1929{ 1930 struct tc35815_regs __iomem *tr = 1931 (struct tc35815_regs __iomem *)dev->base_addr; 1932 1933 if (dev->flags & IFF_PROMISC) { 1934 /* With some (all?) 100MHalf HUB, controller will hang 1935 * if we enabled promiscuous mode before linkup... */ 1936 struct tc35815_local *lp = netdev_priv(dev); 1937 1938 if (!lp->link) 1939 return; 1940 /* Enable promiscuous mode */ 1941 tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc | CAM_StationAcc, &tr->CAM_Ctl); 1942 } else if ((dev->flags & IFF_ALLMULTI) || 1943 netdev_mc_count(dev) > CAM_ENTRY_MAX - 3) { 1944 /* CAM 0, 1, 20 are reserved. */ 1945 /* Disable promiscuous mode, use normal mode. */ 1946 tc_writel(CAM_CompEn | CAM_BroadAcc | CAM_GroupAcc, &tr->CAM_Ctl); 1947 } else if (!netdev_mc_empty(dev)) { 1948 struct netdev_hw_addr *ha; 1949 int i; 1950 int ena_bits = CAM_Ena_Bit(CAM_ENTRY_SOURCE); 1951 1952 tc_writel(0, &tr->CAM_Ctl); 1953 /* Walk the address list, and load the filter */ 1954 i = 0; 1955 netdev_for_each_mc_addr(ha, dev) { 1956 /* entry 0,1 is reserved. */ 1957 tc35815_set_cam_entry(dev, i + 2, ha->addr); 1958 ena_bits |= CAM_Ena_Bit(i + 2); 1959 i++; 1960 } 1961 tc_writel(ena_bits, &tr->CAM_Ena); 1962 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl); 1963 } else { 1964 tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena); 1965 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl); 1966 } 1967} 1968 1969static void tc35815_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) 1970{ 1971 struct tc35815_local *lp = netdev_priv(dev); 1972 strcpy(info->driver, MODNAME); 1973 strcpy(info->version, DRV_VERSION); 1974 strcpy(info->bus_info, pci_name(lp->pci_dev)); 1975} 1976 1977static int tc35815_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) 1978{ 1979 struct tc35815_local *lp = netdev_priv(dev); 1980 1981 if (!lp->phy_dev) 1982 return -ENODEV; 1983 return phy_ethtool_gset(lp->phy_dev, cmd); 1984} 1985 1986static int tc35815_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) 1987{ 1988 struct tc35815_local *lp = netdev_priv(dev); 1989 1990 if (!lp->phy_dev) 1991 return -ENODEV; 1992 return phy_ethtool_sset(lp->phy_dev, cmd); 1993} 1994 1995static u32 tc35815_get_msglevel(struct net_device *dev) 1996{ 1997 struct tc35815_local *lp = netdev_priv(dev); 1998 return lp->msg_enable; 1999} 2000 2001static void tc35815_set_msglevel(struct net_device *dev, u32 datum) 2002{ 2003 struct tc35815_local *lp = netdev_priv(dev); 2004 lp->msg_enable = datum; 2005} 2006 2007static int tc35815_get_sset_count(struct net_device *dev, int sset) 2008{ 2009 struct tc35815_local *lp = netdev_priv(dev); 2010 2011 switch (sset) { 2012 case ETH_SS_STATS: 2013 return sizeof(lp->lstats) / sizeof(int); 2014 default: 2015 return -EOPNOTSUPP; 2016 } 2017} 2018 2019static void tc35815_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data) 2020{ 2021 struct tc35815_local *lp = netdev_priv(dev); 2022 data[0] = lp->lstats.max_tx_qlen; 2023 data[1] = lp->lstats.tx_ints; 2024 data[2] = lp->lstats.rx_ints; 2025 data[3] = lp->lstats.tx_underrun; 2026} 2027 2028static struct { 2029 const char str[ETH_GSTRING_LEN]; 2030} ethtool_stats_keys[] = { 2031 { "max_tx_qlen" }, 2032 { "tx_ints" }, 2033 { "rx_ints" }, 2034 { "tx_underrun" }, 2035}; 2036 2037static void tc35815_get_strings(struct net_device *dev, u32 stringset, u8 *data) 2038{ 2039 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys)); 2040} 2041 2042static const struct ethtool_ops tc35815_ethtool_ops = { 2043 .get_drvinfo = tc35815_get_drvinfo, 2044 .get_settings = tc35815_get_settings, 2045 .set_settings = tc35815_set_settings, 2046 .get_link = ethtool_op_get_link, 2047 .get_msglevel = tc35815_get_msglevel, 2048 .set_msglevel = tc35815_set_msglevel, 2049 .get_strings = tc35815_get_strings, 2050 .get_sset_count = tc35815_get_sset_count, 2051 .get_ethtool_stats = tc35815_get_ethtool_stats, 2052}; 2053 2054static int tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 2055{ 2056 struct tc35815_local *lp = netdev_priv(dev); 2057 2058 if (!netif_running(dev)) 2059 return -EINVAL; 2060 if (!lp->phy_dev) 2061 return -ENODEV; 2062 return phy_mii_ioctl(lp->phy_dev, rq, cmd); 2063} 2064 2065static void tc35815_chip_reset(struct net_device *dev) 2066{ 2067 struct tc35815_regs __iomem *tr = 2068 (struct tc35815_regs __iomem *)dev->base_addr; 2069 int i; 2070 /* reset the controller */ 2071 tc_writel(MAC_Reset, &tr->MAC_Ctl); 2072 udelay(4); /* 3200ns */ 2073 i = 0; 2074 while (tc_readl(&tr->MAC_Ctl) & MAC_Reset) { 2075 if (i++ > 100) { 2076 printk(KERN_ERR "%s: MAC reset failed.\n", dev->name); 2077 break; 2078 } 2079 mdelay(1); 2080 } 2081 tc_writel(0, &tr->MAC_Ctl); 2082 2083 /* initialize registers to default value */ 2084 tc_writel(0, &tr->DMA_Ctl); 2085 tc_writel(0, &tr->TxThrsh); 2086 tc_writel(0, &tr->TxPollCtr); 2087 tc_writel(0, &tr->RxFragSize); 2088 tc_writel(0, &tr->Int_En); 2089 tc_writel(0, &tr->FDA_Bas); 2090 tc_writel(0, &tr->FDA_Lim); 2091 tc_writel(0xffffffff, &tr->Int_Src); /* Write 1 to clear */ 2092 tc_writel(0, &tr->CAM_Ctl); 2093 tc_writel(0, &tr->Tx_Ctl); 2094 tc_writel(0, &tr->Rx_Ctl); 2095 tc_writel(0, &tr->CAM_Ena); 2096 (void)tc_readl(&tr->Miss_Cnt); /* Read to clear */ 2097 2098 /* initialize internal SRAM */ 2099 tc_writel(DMA_TestMode, &tr->DMA_Ctl); 2100 for (i = 0; i < 0x1000; i += 4) { 2101 tc_writel(i, &tr->CAM_Adr); 2102 tc_writel(0, &tr->CAM_Data); 2103 } 2104 tc_writel(0, &tr->DMA_Ctl); 2105} 2106 2107static void tc35815_chip_init(struct net_device *dev) 2108{ 2109 struct tc35815_local *lp = netdev_priv(dev); 2110 struct tc35815_regs __iomem *tr = 2111 (struct tc35815_regs __iomem *)dev->base_addr; 2112 unsigned long txctl = TX_CTL_CMD; 2113 2114 /* load station address to CAM */ 2115 tc35815_set_cam_entry(dev, CAM_ENTRY_SOURCE, dev->dev_addr); 2116 2117 /* Enable CAM (broadcast and unicast) */ 2118 tc_writel(CAM_Ena_Bit(CAM_ENTRY_SOURCE), &tr->CAM_Ena); 2119 tc_writel(CAM_CompEn | CAM_BroadAcc, &tr->CAM_Ctl); 2120 2121 /* Use DMA_RxAlign_2 to make IP header 4-byte aligned. */ 2122 if (HAVE_DMA_RXALIGN(lp)) 2123 tc_writel(DMA_BURST_SIZE | DMA_RxAlign_2, &tr->DMA_Ctl); 2124 else 2125 tc_writel(DMA_BURST_SIZE, &tr->DMA_Ctl); 2126 tc_writel(0, &tr->TxPollCtr); /* Batch mode */ 2127 tc_writel(TX_THRESHOLD, &tr->TxThrsh); 2128 tc_writel(INT_EN_CMD, &tr->Int_En); 2129 2130 /* set queues */ 2131 tc_writel(fd_virt_to_bus(lp, lp->rfd_base), &tr->FDA_Bas); 2132 tc_writel((unsigned long)lp->rfd_limit - (unsigned long)lp->rfd_base, 2133 &tr->FDA_Lim); 2134 /* 2135 * Activation method: 2136 * First, enable the MAC Transmitter and the DMA Receive circuits. 2137 * Then enable the DMA Transmitter and the MAC Receive circuits. 2138 */ 2139 tc_writel(fd_virt_to_bus(lp, lp->fbl_ptr), &tr->BLFrmPtr); /* start DMA receiver */ 2140 tc_writel(RX_CTL_CMD, &tr->Rx_Ctl); /* start MAC receiver */ 2141 2142 /* start MAC transmitter */ 2143 /* TX4939 does not have EnLCarr */ 2144 if (lp->chiptype == TC35815_TX4939) 2145 txctl &= ~Tx_EnLCarr; 2146 if (!lp->phy_dev || !lp->link || lp->duplex == DUPLEX_FULL) 2147 txctl &= ~Tx_EnLCarr; 2148 tc_writel(txctl, &tr->Tx_Ctl); 2149} 2150 2151#ifdef CONFIG_PM 2152static int tc35815_suspend(struct pci_dev *pdev, pm_message_t state) 2153{ 2154 struct net_device *dev = pci_get_drvdata(pdev); 2155 struct tc35815_local *lp = netdev_priv(dev); 2156 unsigned long flags; 2157 2158 pci_save_state(pdev); 2159 if (!netif_running(dev)) 2160 return 0; 2161 netif_device_detach(dev); 2162 if (lp->phy_dev) 2163 phy_stop(lp->phy_dev); 2164 spin_lock_irqsave(&lp->lock, flags); 2165 tc35815_chip_reset(dev); 2166 spin_unlock_irqrestore(&lp->lock, flags); 2167 pci_set_power_state(pdev, PCI_D3hot); 2168 return 0; 2169} 2170 2171static int tc35815_resume(struct pci_dev *pdev) 2172{ 2173 struct net_device *dev = pci_get_drvdata(pdev); 2174 struct tc35815_local *lp = netdev_priv(dev); 2175 2176 pci_restore_state(pdev); 2177 if (!netif_running(dev)) 2178 return 0; 2179 pci_set_power_state(pdev, PCI_D0); 2180 tc35815_restart(dev); 2181 netif_carrier_off(dev); 2182 if (lp->phy_dev) 2183 phy_start(lp->phy_dev); 2184 netif_device_attach(dev); 2185 return 0; 2186} 2187#endif /* CONFIG_PM */ 2188 2189static struct pci_driver tc35815_pci_driver = { 2190 .name = MODNAME, 2191 .id_table = tc35815_pci_tbl, 2192 .probe = tc35815_init_one, 2193 .remove = __devexit_p(tc35815_remove_one), 2194#ifdef CONFIG_PM 2195 .suspend = tc35815_suspend, 2196 .resume = tc35815_resume, 2197#endif 2198}; 2199 2200module_param_named(speed, options.speed, int, 0); 2201MODULE_PARM_DESC(speed, "0:auto, 10:10Mbps, 100:100Mbps"); 2202module_param_named(duplex, options.duplex, int, 0); 2203MODULE_PARM_DESC(duplex, "0:auto, 1:half, 2:full"); 2204 2205static int __init tc35815_init_module(void) 2206{ 2207 return pci_register_driver(&tc35815_pci_driver); 2208} 2209 2210static void __exit tc35815_cleanup_module(void) 2211{ 2212 pci_unregister_driver(&tc35815_pci_driver); 2213} 2214 2215module_init(tc35815_init_module); 2216module_exit(tc35815_cleanup_module); 2217 2218MODULE_DESCRIPTION("TOSHIBA TC35815 PCI 10M/100M Ethernet driver"); 2219MODULE_LICENSE("GPL"); 2220