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   1 /*
   2  * r8169.c: RealTek 8169/8168/8101 ethernet driver.
   3  *
   4  * Copyright (c) 2002 ShuChen <shuchen@realtek.com.tw>
   5  * Copyright (c) 2003 - 2007 Francois Romieu <romieu@fr.zoreil.com>
   6  * Copyright (c) a lot of people too. Please respect their work.
   7  *
   8  * See MAINTAINERS file for support contact information.
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/moduleparam.h>
  13 #include <linux/pci.h>
  14 #include <linux/netdevice.h>
  15 #include <linux/etherdevice.h>
  16 #include <linux/delay.h>
  17 #include <linux/ethtool.h>
  18 #include <linux/mii.h>
  19 #include <linux/if_vlan.h>
  20 #include <linux/crc32.h>
  21 #include <linux/in.h>
  22 #include <linux/ip.h>
  23 #include <linux/tcp.h>
  24 #include <linux/init.h>
  25 #include <linux/dma-mapping.h>
  26
  27 #include <asm/system.h>
  28 #include <asm/io.h>
  29 #include <asm/irq.h>
  30
  31 #define RTL8169_VERSION "2.3LK-NAPI"
  32 #define MODULENAME "r8169"
  33 #define PFX MODULENAME ": "
  34
  35 #ifdef RTL8169_DEBUG
  36 #define assert(expr) \
  37         if (!(expr)) {                                  \
  38                 printk( "Assertion failed! %s,%s,%s,line=%d\n", \
  39                 #expr,__FILE__,__func__,__LINE__);              \
  40         }
  41 #define dprintk(fmt, args...) \
  42         do { printk(KERN_DEBUG PFX fmt, ## args); } while (0)
  43 #else
  44 #define assert(expr) do {} while (0)
  45 #define dprintk(fmt, args...)   do {} while (0)
  46 #endif /* RTL8169_DEBUG */
  47
  48 #define R8169_MSG_DEFAULT \
  49         (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN)
  50
  51 #define TX_BUFFS_AVAIL(tp) \
  52         (tp->dirty_tx + NUM_TX_DESC - tp->cur_tx - 1)
  53
  54 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
  55 static const int max_interrupt_work = 20;
  56
  57 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
  58    The RTL chips use a 64 element hash table based on the Ethernet CRC. */
  59 static const int multicast_filter_limit = 32;
  60
  61 /* MAC address length */
  62 #define MAC_ADDR_LEN    6
  63
  64 #define MAX_READ_REQUEST_SHIFT  12
  65 #define RX_FIFO_THRESH  7       /* 7 means NO threshold, Rx buffer level before first PCI xfer. */
  66 #define RX_DMA_BURST    6       /* Maximum PCI burst, '6' is 1024 */
  67 #define TX_DMA_BURST    6       /* Maximum PCI burst, '6' is 1024 */
  68 #define EarlyTxThld     0x3F    /* 0x3F means NO early transmit */
  69 #define RxPacketMaxSize 0x3FE8  /* 16K - 1 - ETH_HLEN - VLAN - CRC... */
  70 #define SafeMtu         0x1c20  /* ... actually life sucks beyond ~7k */
  71 #define InterFrameGap   0x03    /* 3 means InterFrameGap = the shortest one */
  72
  73 #define R8169_REGS_SIZE         256
  74 #define R8169_NAPI_WEIGHT       64
  75 #define NUM_TX_DESC     64      /* Number of Tx descriptor registers */
  76 #define NUM_RX_DESC     256     /* Number of Rx descriptor registers */
  77 #define RX_BUF_SIZE     1536    /* Rx Buffer size */
  78 #define R8169_TX_RING_BYTES     (NUM_TX_DESC * sizeof(struct TxDesc))
  79 #define R8169_RX_RING_BYTES     (NUM_RX_DESC * sizeof(struct RxDesc))
  80
  81 #define RTL8169_TX_TIMEOUT      (6*HZ)
  82 #define RTL8169_PHY_TIMEOUT     (10*HZ)
  83
  84 #define RTL_EEPROM_SIG          cpu_to_le32(0x8129)
  85 #define RTL_EEPROM_SIG_MASK     cpu_to_le32(0xffff)
  86 #define RTL_EEPROM_SIG_ADDR     0x0000
  87
  88 /* write/read MMIO register */
  89 #define RTL_W8(reg, val8)       writeb ((val8), ioaddr + (reg))
  90 #define RTL_W16(reg, val16)     writew ((val16), ioaddr + (reg))
  91 #define RTL_W32(reg, val32)     writel ((val32), ioaddr + (reg))
  92 #define RTL_R8(reg)             readb (ioaddr + (reg))
  93 #define RTL_R16(reg)            readw (ioaddr + (reg))
  94 #define RTL_R32(reg)            ((unsigned long) readl (ioaddr + (reg)))
  95
  96 enum mac_version {
  97         RTL_GIGA_MAC_VER_01 = 0x01, // 8169
  98         RTL_GIGA_MAC_VER_02 = 0x02, // 8169S
  99         RTL_GIGA_MAC_VER_03 = 0x03, // 8110S
 100         RTL_GIGA_MAC_VER_04 = 0x04, // 8169SB
 101         RTL_GIGA_MAC_VER_05 = 0x05, // 8110SCd
 102         RTL_GIGA_MAC_VER_06 = 0x06, // 8110SCe
 103         RTL_GIGA_MAC_VER_07 = 0x07, // 8102e
 104         RTL_GIGA_MAC_VER_08 = 0x08, // 8102e
 105         RTL_GIGA_MAC_VER_09 = 0x09, // 8102e
 106         RTL_GIGA_MAC_VER_10 = 0x0a, // 8101e
 107         RTL_GIGA_MAC_VER_11 = 0x0b, // 8168Bb
 108         RTL_GIGA_MAC_VER_12 = 0x0c, // 8168Be
 109         RTL_GIGA_MAC_VER_13 = 0x0d, // 8101Eb
 110         RTL_GIGA_MAC_VER_14 = 0x0e, // 8101 ?
 111         RTL_GIGA_MAC_VER_15 = 0x0f, // 8101 ?
 112         RTL_GIGA_MAC_VER_16 = 0x11, // 8101Ec
 113         RTL_GIGA_MAC_VER_17 = 0x10, // 8168Bf
 114         RTL_GIGA_MAC_VER_18 = 0x12, // 8168CP
 115         RTL_GIGA_MAC_VER_19 = 0x13, // 8168C
 116         RTL_GIGA_MAC_VER_20 = 0x14, // 8168C
 117         RTL_GIGA_MAC_VER_21 = 0x15, // 8168C
 118         RTL_GIGA_MAC_VER_22 = 0x16, // 8168C
 119         RTL_GIGA_MAC_VER_23 = 0x17, // 8168CP
 120         RTL_GIGA_MAC_VER_24 = 0x18, // 8168CP
 121         RTL_GIGA_MAC_VER_25 = 0x19  // 8168D
 122 };
 123
 124 #define _R(NAME,MAC,MASK) \
 125         { .name = NAME, .mac_version = MAC, .RxConfigMask = MASK }
 126
 127 static const struct {
 128         const char *name;
 129         u8 mac_version;
 130         u32 RxConfigMask;       /* Clears the bits supported by this chip */
 131 } rtl_chip_info[] = {
 132         _R("RTL8169",           RTL_GIGA_MAC_VER_01, 0xff7e1880), // 8169
 133         _R("RTL8169s",          RTL_GIGA_MAC_VER_02, 0xff7e1880), // 8169S
 134         _R("RTL8110s",          RTL_GIGA_MAC_VER_03, 0xff7e1880), // 8110S
 135         _R("RTL8169sb/8110sb",  RTL_GIGA_MAC_VER_04, 0xff7e1880), // 8169SB
 136         _R("RTL8169sc/8110sc",  RTL_GIGA_MAC_VER_05, 0xff7e1880), // 8110SCd
 137         _R("RTL8169sc/8110sc",  RTL_GIGA_MAC_VER_06, 0xff7e1880), // 8110SCe
 138         _R("RTL8102e",          RTL_GIGA_MAC_VER_07, 0xff7e1880), // PCI-E
 139         _R("RTL8102e",          RTL_GIGA_MAC_VER_08, 0xff7e1880), // PCI-E
 140         _R("RTL8102e",          RTL_GIGA_MAC_VER_09, 0xff7e1880), // PCI-E
 141         _R("RTL8101e",          RTL_GIGA_MAC_VER_10, 0xff7e1880), // PCI-E
 142         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_11, 0xff7e1880), // PCI-E
 143         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_12, 0xff7e1880), // PCI-E
 144         _R("RTL8101e",          RTL_GIGA_MAC_VER_13, 0xff7e1880), // PCI-E 8139
 145         _R("RTL8100e",          RTL_GIGA_MAC_VER_14, 0xff7e1880), // PCI-E 8139
 146         _R("RTL8100e",          RTL_GIGA_MAC_VER_15, 0xff7e1880), // PCI-E 8139
 147         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_17, 0xff7e1880), // PCI-E
 148         _R("RTL8101e",          RTL_GIGA_MAC_VER_16, 0xff7e1880), // PCI-E
 149         _R("RTL8168cp/8111cp",  RTL_GIGA_MAC_VER_18, 0xff7e1880), // PCI-E
 150         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_19, 0xff7e1880), // PCI-E
 151         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_20, 0xff7e1880), // PCI-E
 152         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_21, 0xff7e1880), // PCI-E
 153         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_22, 0xff7e1880), // PCI-E
 154         _R("RTL8168cp/8111cp",  RTL_GIGA_MAC_VER_23, 0xff7e1880), // PCI-E
 155         _R("RTL8168cp/8111cp",  RTL_GIGA_MAC_VER_24, 0xff7e1880), // PCI-E
 156         _R("RTL8168d/8111d",    RTL_GIGA_MAC_VER_25, 0xff7e1880)  // PCI-E
 157 };
 158 #undef _R
 159
 160 enum cfg_version {
 161         RTL_CFG_0 = 0x00,
 162         RTL_CFG_1,
 163         RTL_CFG_2
 164 };
 165
 166 static void rtl_hw_start_8169(struct net_device *);
 167 static void rtl_hw_start_8168(struct net_device *);
 168 static void rtl_hw_start_8101(struct net_device *);
 169
 170 static struct pci_device_id rtl8169_pci_tbl[] = {
 171         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8129), 0, 0, RTL_CFG_0 },
 172         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8136), 0, 0, RTL_CFG_2 },
 173         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8167), 0, 0, RTL_CFG_0 },
 174         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8168), 0, 0, RTL_CFG_1 },
 175         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8169), 0, 0, RTL_CFG_0 },
 176         { PCI_DEVICE(PCI_VENDOR_ID_DLINK,       0x4300), 0, 0, RTL_CFG_0 },
 177         { PCI_DEVICE(PCI_VENDOR_ID_AT,          0xc107), 0, 0, RTL_CFG_0 },
 178         { PCI_DEVICE(0x16ec,                    0x0116), 0, 0, RTL_CFG_0 },
 179         { PCI_VENDOR_ID_LINKSYS,                0x1032,
 180                 PCI_ANY_ID, 0x0024, 0, 0, RTL_CFG_0 },
 181         { 0x0001,                               0x8168,
 182                 PCI_ANY_ID, 0x2410, 0, 0, RTL_CFG_2 },
 183         {0,},
 184 };
 185
 186 MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);
 187
 188 static int rx_copybreak = 200;
 189 static int use_dac;
 190 static struct {
 191         u32 msg_enable;
 192 } debug = { -1 };
 193
 194 enum rtl_registers {
 195         MAC0            = 0,    /* Ethernet hardware address. */
 196         MAC4            = 4,
 197         MAR0            = 8,    /* Multicast filter. */
 198         CounterAddrLow          = 0x10,
 199         CounterAddrHigh         = 0x14,
 200         TxDescStartAddrLow      = 0x20,
 201         TxDescStartAddrHigh     = 0x24,
 202         TxHDescStartAddrLow     = 0x28,
 203         TxHDescStartAddrHigh    = 0x2c,
 204         FLASH           = 0x30,
 205         ERSR            = 0x36,
 206         ChipCmd         = 0x37,
 207         TxPoll          = 0x38,
 208         IntrMask        = 0x3c,
 209         IntrStatus      = 0x3e,
 210         TxConfig        = 0x40,
 211         RxConfig        = 0x44,
 212         RxMissed        = 0x4c,
 213         Cfg9346         = 0x50,
 214         Config0         = 0x51,
 215         Config1         = 0x52,
 216         Config2         = 0x53,
 217         Config3         = 0x54,
 218         Config4         = 0x55,
 219         Config5         = 0x56,
 220         MultiIntr       = 0x5c,
 221         PHYAR           = 0x60,
 222         PHYstatus       = 0x6c,
 223         RxMaxSize       = 0xda,
 224         CPlusCmd        = 0xe0,
 225         IntrMitigate    = 0xe2,
 226         RxDescAddrLow   = 0xe4,
 227         RxDescAddrHigh  = 0xe8,
 228         EarlyTxThres    = 0xec,
 229         FuncEvent       = 0xf0,
 230         FuncEventMask   = 0xf4,
 231         FuncPresetState = 0xf8,
 232         FuncForceEvent  = 0xfc,
 233 };
 234
 235 enum rtl8110_registers {
 236         TBICSR                  = 0x64,
 237         TBI_ANAR                = 0x68,
 238         TBI_LPAR                = 0x6a,
 239 };
 240
 241 enum rtl8168_8101_registers {
 242         CSIDR                   = 0x64,
 243         CSIAR                   = 0x68,
 244 #define CSIAR_FLAG                      0x80000000
 245 #define CSIAR_WRITE_CMD                 0x80000000
 246 #define CSIAR_BYTE_ENABLE               0x0f
 247 #define CSIAR_BYTE_ENABLE_SHIFT         12
 248 #define CSIAR_ADDR_MASK                 0x0fff
 249
 250         EPHYAR                  = 0x80,
 251 #define EPHYAR_FLAG                     0x80000000
 252 #define EPHYAR_WRITE_CMD                0x80000000
 253 #define EPHYAR_REG_MASK                 0x1f
 254 #define EPHYAR_REG_SHIFT                16
 255 #define EPHYAR_DATA_MASK                0xffff
 256         DBG_REG                 = 0xd1,
 257 #define FIX_NAK_1                       (1 << 4)
 258 #define FIX_NAK_2                       (1 << 3)
 259 };
 260
 261 enum rtl_register_content {
 262         /* InterruptStatusBits */
 263         SYSErr          = 0x8000,
 264         PCSTimeout      = 0x4000,
 265         SWInt           = 0x0100,
 266         TxDescUnavail   = 0x0080,
 267         RxFIFOOver      = 0x0040,
 268         LinkChg         = 0x0020,
 269         RxOverflow      = 0x0010,
 270         TxErr           = 0x0008,
 271         TxOK            = 0x0004,
 272         RxErr           = 0x0002,
 273         RxOK            = 0x0001,
 274
 275         /* RxStatusDesc */
 276         RxFOVF  = (1 << 23),
 277         RxRWT   = (1 << 22),
 278         RxRES   = (1 << 21),
 279         RxRUNT  = (1 << 20),
 280         RxCRC   = (1 << 19),
 281
 282         /* ChipCmdBits */
 283         CmdReset        = 0x10,
 284         CmdRxEnb        = 0x08,
 285         CmdTxEnb        = 0x04,
 286         RxBufEmpty      = 0x01,
 287
 288         /* TXPoll register p.5 */
 289         HPQ             = 0x80,         /* Poll cmd on the high prio queue */
 290         NPQ             = 0x40,         /* Poll cmd on the low prio queue */
 291         FSWInt          = 0x01,         /* Forced software interrupt */
 292
 293         /* Cfg9346Bits */
 294         Cfg9346_Lock    = 0x00,
 295         Cfg9346_Unlock  = 0xc0,
 296
 297         /* rx_mode_bits */
 298         AcceptErr       = 0x20,
 299         AcceptRunt      = 0x10,
 300         AcceptBroadcast = 0x08,
 301         AcceptMulticast = 0x04,
 302         AcceptMyPhys    = 0x02,
 303         AcceptAllPhys   = 0x01,
 304
 305         /* RxConfigBits */
 306         RxCfgFIFOShift  = 13,
 307         RxCfgDMAShift   =  8,
 308
 309         /* TxConfigBits */
 310         TxInterFrameGapShift = 24,
 311         TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
 312
 313         /* Config1 register p.24 */
 314         LEDS1           = (1 << 7),
 315         LEDS0           = (1 << 6),
 316         MSIEnable       = (1 << 5),     /* Enable Message Signaled Interrupt */
 317         Speed_down      = (1 << 4),
 318         MEMMAP          = (1 << 3),
 319         IOMAP           = (1 << 2),
 320         VPD             = (1 << 1),
 321         PMEnable        = (1 << 0),     /* Power Management Enable */
 322
 323         /* Config2 register p. 25 */
 324         PCI_Clock_66MHz = 0x01,
 325         PCI_Clock_33MHz = 0x00,
 326
 327         /* Config3 register p.25 */
 328         MagicPacket     = (1 << 5),     /* Wake up when receives a Magic Packet */
 329         LinkUp          = (1 << 4),     /* Wake up when the cable connection is re-established */
 330         Beacon_en       = (1 << 0),     /* 8168 only. Reserved in the 8168b */
 331
 332         /* Config5 register p.27 */
 333         BWF             = (1 << 6),     /* Accept Broadcast wakeup frame */
 334         MWF             = (1 << 5),     /* Accept Multicast wakeup frame */
 335         UWF             = (1 << 4),     /* Accept Unicast wakeup frame */
 336         LanWake         = (1 << 1),     /* LanWake enable/disable */
 337         PMEStatus       = (1 << 0),     /* PME status can be reset by PCI RST# */
 338
 339         /* TBICSR p.28 */
 340         TBIReset        = 0x80000000,
 341         TBILoopback     = 0x40000000,
 342         TBINwEnable     = 0x20000000,
 343         TBINwRestart    = 0x10000000,
 344         TBILinkOk       = 0x02000000,
 345         TBINwComplete   = 0x01000000,
 346
 347         /* CPlusCmd p.31 */
 348         EnableBist      = (1 << 15),    // 8168 8101
 349         Mac_dbgo_oe     = (1 << 14),    // 8168 8101
 350         Normal_mode     = (1 << 13),    // unused
 351         Force_half_dup  = (1 << 12),    // 8168 8101
 352         Force_rxflow_en = (1 << 11),    // 8168 8101
 353         Force_txflow_en = (1 << 10),    // 8168 8101
 354         Cxpl_dbg_sel    = (1 << 9),     // 8168 8101
 355         ASF             = (1 << 8),     // 8168 8101
 356         PktCntrDisable  = (1 << 7),     // 8168 8101
 357         Mac_dbgo_sel    = 0x001c,       // 8168
 358         RxVlan          = (1 << 6),
 359         RxChkSum        = (1 << 5),
 360         PCIDAC          = (1 << 4),
 361         PCIMulRW        = (1 << 3),
 362         INTT_0          = 0x0000,       // 8168
 363         INTT_1          = 0x0001,       // 8168
 364         INTT_2          = 0x0002,       // 8168
 365         INTT_3          = 0x0003,       // 8168
 366
 367         /* rtl8169_PHYstatus */
 368         TBI_Enable      = 0x80,
 369         TxFlowCtrl      = 0x40,
 370         RxFlowCtrl      = 0x20,
 371         _1000bpsF       = 0x10,
 372         _100bps         = 0x08,
 373         _10bps          = 0x04,
 374         LinkStatus      = 0x02,
 375         FullDup         = 0x01,
 376
 377         /* _TBICSRBit */
 378         TBILinkOK       = 0x02000000,
 379
 380         /* DumpCounterCommand */
 381         CounterDump     = 0x8,
 382 };
 383
 384 enum desc_status_bit {
 385         DescOwn         = (1 << 31), /* Descriptor is owned by NIC */
 386         RingEnd         = (1 << 30), /* End of descriptor ring */
 387         FirstFrag       = (1 << 29), /* First segment of a packet */
 388         LastFrag        = (1 << 28), /* Final segment of a packet */
 389
 390         /* Tx private */
 391         LargeSend       = (1 << 27), /* TCP Large Send Offload (TSO) */
 392         MSSShift        = 16,        /* MSS value position */
 393         MSSMask         = 0xfff,     /* MSS value + LargeSend bit: 12 bits */
 394         IPCS            = (1 << 18), /* Calculate IP checksum */
 395         UDPCS           = (1 << 17), /* Calculate UDP/IP checksum */
 396         TCPCS           = (1 << 16), /* Calculate TCP/IP checksum */
 397         TxVlanTag       = (1 << 17), /* Add VLAN tag */
 398
 399         /* Rx private */
 400         PID1            = (1 << 18), /* Protocol ID bit 1/2 */
 401         PID0            = (1 << 17), /* Protocol ID bit 2/2 */
 402
 403 #define RxProtoUDP      (PID1)
 404 #define RxProtoTCP      (PID0)
 405 #define RxProtoIP       (PID1 | PID0)
 406 #define RxProtoMask     RxProtoIP
 407
 408         IPFail          = (1 << 16), /* IP checksum failed */
 409         UDPFail         = (1 << 15), /* UDP/IP checksum failed */
 410         TCPFail         = (1 << 14), /* TCP/IP checksum failed */
 411         RxVlanTag       = (1 << 16), /* VLAN tag available */
 412 };
 413
 414 #define RsvdMask        0x3fffc000
 415
 416 struct TxDesc {
 417         __le32 opts1;
 418         __le32 opts2;
 419         __le64 addr;
 420 };
 421
 422 struct RxDesc {
 423         __le32 opts1;
 424         __le32 opts2;
 425         __le64 addr;
 426 };
 427
 428 struct ring_info {
 429         struct sk_buff  *skb;
 430         u32             len;
 431         u8              __pad[sizeof(void *) - sizeof(u32)];
 432 };
 433
 434 enum features {
 435         RTL_FEATURE_WOL         = (1 << 0),
 436         RTL_FEATURE_MSI         = (1 << 1),
 437         RTL_FEATURE_GMII        = (1 << 2),
 438 };
 439
 440 struct rtl8169_counters {
 441         __le64  tx_packets;
 442         __le64  rx_packets;
 443         __le64  tx_errors;
 444         __le32  rx_errors;
 445         __le16  rx_missed;
 446         __le16  align_errors;
 447         __le32  tx_one_collision;
 448         __le32  tx_multi_collision;
 449         __le64  rx_unicast;
 450         __le64  rx_broadcast;
 451         __le32  rx_multicast;
 452         __le16  tx_aborted;
 453         __le16  tx_underun;
 454 };
 455
 456 struct rtl8169_private {
 457         void __iomem *mmio_addr;        /* memory map physical address */
 458         struct pci_dev *pci_dev;        /* Index of PCI device */
 459         struct net_device *dev;
 460         struct napi_struct napi;
 461         spinlock_t lock;                /* spin lock flag */
 462         u32 msg_enable;
 463         int chipset;
 464         int mac_version;
 465         u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
 466         u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
 467         u32 dirty_rx;
 468         u32 dirty_tx;
 469         struct TxDesc *TxDescArray;     /* 256-aligned Tx descriptor ring */
 470         struct RxDesc *RxDescArray;     /* 256-aligned Rx descriptor ring */
 471         dma_addr_t TxPhyAddr;
 472         dma_addr_t RxPhyAddr;
 473         struct sk_buff *Rx_skbuff[NUM_RX_DESC]; /* Rx data buffers */
 474         struct ring_info tx_skb[NUM_TX_DESC];   /* Tx data buffers */
 475         unsigned align;
 476         unsigned rx_buf_sz;
 477         struct timer_list timer;
 478         u16 cp_cmd;
 479         u16 intr_event;
 480         u16 napi_event;
 481         u16 intr_mask;
 482         int phy_auto_nego_reg;
 483         int phy_1000_ctrl_reg;
 484 #ifdef CONFIG_R8169_VLAN
 485         struct vlan_group *vlgrp;
 486 #endif
 487         int (*set_speed)(struct net_device *, u8 autoneg, u16 speed, u8 duplex);
 488         int (*get_settings)(struct net_device *, struct ethtool_cmd *);
 489         void (*phy_reset_enable)(void __iomem *);
 490         void (*hw_start)(struct net_device *);
 491         unsigned int (*phy_reset_pending)(void __iomem *);
 492         unsigned int (*link_ok)(void __iomem *);
 493         int (*do_ioctl)(struct rtl8169_private *tp, struct mii_ioctl_data *data, int cmd);
 494         int pcie_cap;
 495         struct delayed_work task;
 496         unsigned features;
 497
 498         struct mii_if_info mii;
 499         struct rtl8169_counters counters;
 500 };
 501
 502 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
 503 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
 504 module_param(rx_copybreak, int, 0);
 505 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
 506 module_param(use_dac, int, 0);
 507 MODULE_PARM_DESC(use_dac, "Enable PCI DAC. Unsafe on 32 bit PCI slot.");
 508 module_param_named(debug, debug.msg_enable, int, 0);
 509 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
 510 MODULE_LICENSE("GPL");
 511 MODULE_VERSION(RTL8169_VERSION);
 512
 513 static int rtl8169_open(struct net_device *dev);
 514 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev);
 515 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance);
 516 static int rtl8169_init_ring(struct net_device *dev);
 517 static void rtl_hw_start(struct net_device *dev);
 518 static int rtl8169_close(struct net_device *dev);
 519 static void rtl_set_rx_mode(struct net_device *dev);
 520 static void rtl8169_tx_timeout(struct net_device *dev);
 521 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
 522 static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
 523                                 void __iomem *, u32 budget);
 524 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
 525 static void rtl8169_down(struct net_device *dev);
 526 static void rtl8169_rx_clear(struct rtl8169_private *tp);
 527 static int rtl8169_poll(struct napi_struct *napi, int budget);
 528
 529 static const unsigned int rtl8169_rx_config =
 530         (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
 531
 532 static void mdio_write(void __iomem *ioaddr, int reg_addr, int value)
 533 {
 534         int i;
 535
 536         RTL_W32(PHYAR, 0x80000000 | (reg_addr & 0x1f) << 16 | (value & 0xffff));
 537
 538         for (i = 20; i > 0; i--) {
 539                 /*
 540                  * Check if the RTL8169 has completed writing to the specified
 541                  * MII register.
 542                  */
 543                 if (!(RTL_R32(PHYAR) & 0x80000000))
 544                         break;
 545                 udelay(25);
 546         }
 547 }
 548
 549 static int mdio_read(void __iomem *ioaddr, int reg_addr)
 550 {
 551         int i, value = -1;
 552
 553         RTL_W32(PHYAR, 0x0 | (reg_addr & 0x1f) << 16);
 554
 555         for (i = 20; i > 0; i--) {
 556                 /*
 557                  * Check if the RTL8169 has completed retrieving data from
 558                  * the specified MII register.
 559                  */
 560                 if (RTL_R32(PHYAR) & 0x80000000) {
 561                         value = RTL_R32(PHYAR) & 0xffff;
 562                         break;
 563                 }
 564                 udelay(25);
 565         }
 566         return value;
 567 }
 568
 569 static void mdio_patch(void __iomem *ioaddr, int reg_addr, int value)
 570 {
 571         mdio_write(ioaddr, reg_addr, mdio_read(ioaddr, reg_addr) | value);
 572 }
 573
 574 static void rtl_mdio_write(struct net_device *dev, int phy_id, int location,
 575                            int val)
 576 {
 577         struct rtl8169_private *tp = netdev_priv(dev);
 578         void __iomem *ioaddr = tp->mmio_addr;
 579
 580         mdio_write(ioaddr, location, val);
 581 }
 582
 583 static int rtl_mdio_read(struct net_device *dev, int phy_id, int location)
 584 {
 585         struct rtl8169_private *tp = netdev_priv(dev);
 586         void __iomem *ioaddr = tp->mmio_addr;
 587
 588         return mdio_read(ioaddr, location);
 589 }
 590
 591 static void rtl_ephy_write(void __iomem *ioaddr, int reg_addr, int value)
 592 {
 593         unsigned int i;
 594
 595         RTL_W32(EPHYAR, EPHYAR_WRITE_CMD | (value & EPHYAR_DATA_MASK) |
 596                 (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
 597
 598         for (i = 0; i < 100; i++) {
 599                 if (!(RTL_R32(EPHYAR) & EPHYAR_FLAG))
 600                         break;
 601                 udelay(10);
 602         }
 603 }
 604
 605 static u16 rtl_ephy_read(void __iomem *ioaddr, int reg_addr)
 606 {
 607         u16 value = 0xffff;
 608         unsigned int i;
 609
 610         RTL_W32(EPHYAR, (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
 611
 612         for (i = 0; i < 100; i++) {
 613                 if (RTL_R32(EPHYAR) & EPHYAR_FLAG) {
 614                         value = RTL_R32(EPHYAR) & EPHYAR_DATA_MASK;
 615                         break;
 616                 }
 617                 udelay(10);
 618         }
 619
 620         return value;
 621 }
 622
 623 static void rtl_csi_write(void __iomem *ioaddr, int addr, int value)
 624 {
 625         unsigned int i;
 626
 627         RTL_W32(CSIDR, value);
 628         RTL_W32(CSIAR, CSIAR_WRITE_CMD | (addr & CSIAR_ADDR_MASK) |
 629                 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
 630
 631         for (i = 0; i < 100; i++) {
 632                 if (!(RTL_R32(CSIAR) & CSIAR_FLAG))
 633                         break;
 634                 udelay(10);
 635         }
 636 }
 637
 638 static u32 rtl_csi_read(void __iomem *ioaddr, int addr)
 639 {
 640         u32 value = ~0x00;
 641         unsigned int i;
 642
 643         RTL_W32(CSIAR, (addr & CSIAR_ADDR_MASK) |
 644                 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
 645
 646         for (i = 0; i < 100; i++) {
 647                 if (RTL_R32(CSIAR) & CSIAR_FLAG) {
 648                         value = RTL_R32(CSIDR);
 649                         break;
 650                 }
 651                 udelay(10);
 652         }
 653
 654         return value;
 655 }
 656
 657 static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
 658 {
 659         RTL_W16(IntrMask, 0x0000);
 660
 661         RTL_W16(IntrStatus, 0xffff);
 662 }
 663
 664 static void rtl8169_asic_down(void __iomem *ioaddr)
 665 {
 666         RTL_W8(ChipCmd, 0x00);
 667         rtl8169_irq_mask_and_ack(ioaddr);
 668         RTL_R16(CPlusCmd);
 669 }
 670
 671 static unsigned int rtl8169_tbi_reset_pending(void __iomem *ioaddr)
 672 {
 673         return RTL_R32(TBICSR) & TBIReset;
 674 }
 675
 676 static unsigned int rtl8169_xmii_reset_pending(void __iomem *ioaddr)
 677 {
 678         return mdio_read(ioaddr, MII_BMCR) & BMCR_RESET;
 679 }
 680
 681 static unsigned int rtl8169_tbi_link_ok(void __iomem *ioaddr)
 682 {
 683         return RTL_R32(TBICSR) & TBILinkOk;
 684 }
 685
 686 static unsigned int rtl8169_xmii_link_ok(void __iomem *ioaddr)
 687 {
 688         return RTL_R8(PHYstatus) & LinkStatus;
 689 }
 690
 691 static void rtl8169_tbi_reset_enable(void __iomem *ioaddr)
 692 {
 693         RTL_W32(TBICSR, RTL_R32(TBICSR) | TBIReset);
 694 }
 695
 696 static void rtl8169_xmii_reset_enable(void __iomem *ioaddr)
 697 {
 698         unsigned int val;
 699
 700         val = mdio_read(ioaddr, MII_BMCR) | BMCR_RESET;
 701         mdio_write(ioaddr, MII_BMCR, val & 0xffff);
 702 }
 703
 704 static void rtl8169_check_link_status(struct net_device *dev,
 705                                       struct rtl8169_private *tp,
 706                                       void __iomem *ioaddr)
 707 {
 708         unsigned long flags;
 709
 710         spin_lock_irqsave(&tp->lock, flags);
 711         if (tp->link_ok(ioaddr)) {
 712                 netif_carrier_on(dev);
 713                 if (netif_msg_ifup(tp))
 714                         printk(KERN_INFO PFX "%s: link up\n", dev->name);
 715         } else {
 716                 if (netif_msg_ifdown(tp))
 717                         printk(KERN_INFO PFX "%s: link down\n", dev->name);
 718                 netif_carrier_off(dev);
 719         }
 720         spin_unlock_irqrestore(&tp->lock, flags);
 721 }
 722
 723 static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 724 {
 725         struct rtl8169_private *tp = netdev_priv(dev);
 726         void __iomem *ioaddr = tp->mmio_addr;
 727         u8 options;
 728
 729         wol->wolopts = 0;
 730
 731 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
 732         wol->supported = WAKE_ANY;
 733
 734         spin_lock_irq(&tp->lock);
 735
 736         options = RTL_R8(Config1);
 737         if (!(options & PMEnable))
 738                 goto out_unlock;
 739
 740         options = RTL_R8(Config3);
 741         if (options & LinkUp)
 742                 wol->wolopts |= WAKE_PHY;
 743         if (options & MagicPacket)
 744                 wol->wolopts |= WAKE_MAGIC;
 745
 746         options = RTL_R8(Config5);
 747         if (options & UWF)
 748                 wol->wolopts |= WAKE_UCAST;
 749         if (options & BWF)
 750                 wol->wolopts |= WAKE_BCAST;
 751         if (options & MWF)
 752                 wol->wolopts |= WAKE_MCAST;
 753
 754 out_unlock:
 755         spin_unlock_irq(&tp->lock);
 756 }
 757
 758 static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 759 {
 760         struct rtl8169_private *tp = netdev_priv(dev);
 761         void __iomem *ioaddr = tp->mmio_addr;
 762         unsigned int i;
 763         static struct {
 764                 u32 opt;
 765                 u16 reg;
 766                 u8  mask;
 767         } cfg[] = {
 768                 { WAKE_ANY,   Config1, PMEnable },
 769                 { WAKE_PHY,   Config3, LinkUp },
 770                 { WAKE_MAGIC, Config3, MagicPacket },
 771                 { WAKE_UCAST, Config5, UWF },
 772                 { WAKE_BCAST, Config5, BWF },
 773                 { WAKE_MCAST, Config5, MWF },
 774                 { WAKE_ANY,   Config5, LanWake }
 775         };
 776
 777         spin_lock_irq(&tp->lock);
 778
 779         RTL_W8(Cfg9346, Cfg9346_Unlock);
 780
 781         for (i = 0; i < ARRAY_SIZE(cfg); i++) {
 782                 u8 options = RTL_R8(cfg[i].reg) & ~cfg[i].mask;
 783                 if (wol->wolopts & cfg[i].opt)
 784                         options |= cfg[i].mask;
 785                 RTL_W8(cfg[i].reg, options);
 786         }
 787
 788         RTL_W8(Cfg9346, Cfg9346_Lock);
 789
 790         if (wol->wolopts)
 791                 tp->features |= RTL_FEATURE_WOL;
 792         else
 793                 tp->features &= ~RTL_FEATURE_WOL;
 794         device_set_wakeup_enable(&tp->pci_dev->dev, wol->wolopts);
 795
 796         spin_unlock_irq(&tp->lock);
 797
 798         return 0;
 799 }
 800
 801 static void rtl8169_get_drvinfo(struct net_device *dev,
 802                                 struct ethtool_drvinfo *info)
 803 {
 804         struct rtl8169_private *tp = netdev_priv(dev);
 805
 806         strcpy(info->driver, MODULENAME);
 807         strcpy(info->version, RTL8169_VERSION);
 808         strcpy(info->bus_info, pci_name(tp->pci_dev));
 809 }
 810
 811 static int rtl8169_get_regs_len(struct net_device *dev)
 812 {
 813         return R8169_REGS_SIZE;
 814 }
 815
 816 static int rtl8169_set_speed_tbi(struct net_device *dev,
 817                                  u8 autoneg, u16 speed, u8 duplex)
 818 {
 819         struct rtl8169_private *tp = netdev_priv(dev);
 820         void __iomem *ioaddr = tp->mmio_addr;
 821         int ret = 0;
 822         u32 reg;
 823
 824         reg = RTL_R32(TBICSR);
 825         if ((autoneg == AUTONEG_DISABLE) && (speed == SPEED_1000) &&
 826             (duplex == DUPLEX_FULL)) {
 827                 RTL_W32(TBICSR, reg & ~(TBINwEnable | TBINwRestart));
 828         } else if (autoneg == AUTONEG_ENABLE)
 829                 RTL_W32(TBICSR, reg | TBINwEnable | TBINwRestart);
 830         else {
 831                 if (netif_msg_link(tp)) {
 832                         printk(KERN_WARNING "%s: "
 833                                "incorrect speed setting refused in TBI mode\n",
 834                                dev->name);
 835                 }
 836                 ret = -EOPNOTSUPP;
 837         }
 838
 839         return ret;
 840 }
 841
 842 static int rtl8169_set_speed_xmii(struct net_device *dev,
 843                                   u8 autoneg, u16 speed, u8 duplex)
 844 {
 845         struct rtl8169_private *tp = netdev_priv(dev);
 846         void __iomem *ioaddr = tp->mmio_addr;
 847         int auto_nego, giga_ctrl;
 848
 849         auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
 850         auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
 851                        ADVERTISE_100HALF | ADVERTISE_100FULL);
 852         giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
 853         giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
 854
 855         if (autoneg == AUTONEG_ENABLE) {
 856                 auto_nego |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
 857                               ADVERTISE_100HALF | ADVERTISE_100FULL);
 858                 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
 859         } else {
 860                 if (speed == SPEED_10)
 861                         auto_nego |= ADVERTISE_10HALF | ADVERTISE_10FULL;
 862                 else if (speed == SPEED_100)
 863                         auto_nego |= ADVERTISE_100HALF | ADVERTISE_100FULL;
 864                 else if (speed == SPEED_1000)
 865                         giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
 866
 867                 if (duplex == DUPLEX_HALF)
 868                         auto_nego &= ~(ADVERTISE_10FULL | ADVERTISE_100FULL);
 869
 870                 if (duplex == DUPLEX_FULL)
 871                         auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_100HALF);
 872
 873                 /* This tweak comes straight from Realtek's driver. */
 874                 if ((speed == SPEED_100) && (duplex == DUPLEX_HALF) &&
 875                     ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
 876                      (tp->mac_version == RTL_GIGA_MAC_VER_16))) {
 877                         auto_nego = ADVERTISE_100HALF | ADVERTISE_CSMA;
 878                 }
 879         }
 880
 881         /* The 8100e/8101e/8102e do Fast Ethernet only. */
 882         if ((tp->mac_version == RTL_GIGA_MAC_VER_07) ||
 883             (tp->mac_version == RTL_GIGA_MAC_VER_08) ||
 884             (tp->mac_version == RTL_GIGA_MAC_VER_09) ||
 885             (tp->mac_version == RTL_GIGA_MAC_VER_10) ||
 886             (tp->mac_version == RTL_GIGA_MAC_VER_13) ||
 887             (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
 888             (tp->mac_version == RTL_GIGA_MAC_VER_15) ||
 889             (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
 890                 if ((giga_ctrl & (ADVERTISE_1000FULL | ADVERTISE_1000HALF)) &&
 891                     netif_msg_link(tp)) {
 892                         printk(KERN_INFO "%s: PHY does not support 1000Mbps.\n",
 893                                dev->name);
 894                 }
 895                 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
 896         }
 897
 898         auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
 899
 900         if ((tp->mac_version == RTL_GIGA_MAC_VER_11) ||
 901             (tp->mac_version == RTL_GIGA_MAC_VER_12) ||
 902             (tp->mac_version >= RTL_GIGA_MAC_VER_17)) {
 903                 /*
 904                  * Wake up the PHY.
 905                  * Vendor specific (0x1f) and reserved (0x0e) MII registers.
 906                  */
 907                 mdio_write(ioaddr, 0x1f, 0x0000);
 908                 mdio_write(ioaddr, 0x0e, 0x0000);
 909         }
 910
 911         tp->phy_auto_nego_reg = auto_nego;
 912         tp->phy_1000_ctrl_reg = giga_ctrl;
 913
 914         mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
 915         mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
 916         mdio_write(ioaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
 917         return 0;
 918 }
 919
 920 static int rtl8169_set_speed(struct net_device *dev,
 921                              u8 autoneg, u16 speed, u8 duplex)
 922 {
 923         struct rtl8169_private *tp = netdev_priv(dev);
 924         int ret;
 925
 926         ret = tp->set_speed(dev, autoneg, speed, duplex);
 927
 928         if (netif_running(dev) && (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
 929                 mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
 930
 931         return ret;
 932 }
 933
 934 static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 935 {
 936         struct rtl8169_private *tp = netdev_priv(dev);
 937         unsigned long flags;
 938         int ret;
 939
 940         spin_lock_irqsave(&tp->lock, flags);
 941         ret = rtl8169_set_speed(dev, cmd->autoneg, cmd->speed, cmd->duplex);
 942         spin_unlock_irqrestore(&tp->lock, flags);
 943
 944         return ret;
 945 }
 946
 947 static u32 rtl8169_get_rx_csum(struct net_device *dev)
 948 {
 949         struct rtl8169_private *tp = netdev_priv(dev);
 950
 951         return tp->cp_cmd & RxChkSum;
 952 }
 953
 954 static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
 955 {
 956         struct rtl8169_private *tp = netdev_priv(dev);
 957         void __iomem *ioaddr = tp->mmio_addr;
 958         unsigned long flags;
 959
 960         spin_lock_irqsave(&tp->lock, flags);
 961
 962         if (data)
 963                 tp->cp_cmd |= RxChkSum;
 964         else
 965                 tp->cp_cmd &= ~RxChkSum;
 966
 967         RTL_W16(CPlusCmd, tp->cp_cmd);
 968         RTL_R16(CPlusCmd);
 969
 970         spin_unlock_irqrestore(&tp->lock, flags);
 971
 972         return 0;
 973 }
 974
 975 #ifdef CONFIG_R8169_VLAN
 976
 977 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
 978                                       struct sk_buff *skb)
 979 {
 980         return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
 981                 TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
 982 }
 983
 984 static void rtl8169_vlan_rx_register(struct net_device *dev,
 985                                      struct vlan_group *grp)
 986 {
 987         struct rtl8169_private *tp = netdev_priv(dev);
 988         void __iomem *ioaddr = tp->mmio_addr;
 989         unsigned long flags;
 990
 991         spin_lock_irqsave(&tp->lock, flags);
 992         tp->vlgrp = grp;
 993         if (tp->vlgrp)
 994                 tp->cp_cmd |= RxVlan;
 995         else
 996                 tp->cp_cmd &= ~RxVlan;
 997         RTL_W16(CPlusCmd, tp->cp_cmd);
 998         RTL_R16(CPlusCmd);
 999         spin_unlock_irqrestore(&tp->lock, flags);
1000 }
1001
1002 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
1003                                struct sk_buff *skb)
1004 {
1005         u32 opts2 = le32_to_cpu(desc->opts2);
1006         struct vlan_group *vlgrp = tp->vlgrp;
1007         int ret;
1008
1009         if (vlgrp && (opts2 & RxVlanTag)) {
1010                 vlan_hwaccel_receive_skb(skb, vlgrp, swab16(opts2 & 0xffff));
1011                 ret = 0;
1012         } else
1013                 ret = -1;
1014         desc->opts2 = 0;
1015         return ret;
1016 }
1017
1018 #else /* !CONFIG_R8169_VLAN */
1019
1020 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
1021                                       struct sk_buff *skb)
1022 {
1023         return 0;
1024 }
1025
1026 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
1027                                struct sk_buff *skb)
1028 {
1029         return -1;
1030 }
1031
1032 #endif
1033
1034 static int rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
1035 {
1036         struct rtl8169_private *tp = netdev_priv(dev);
1037         void __iomem *ioaddr = tp->mmio_addr;
1038         u32 status;
1039
1040         cmd->supported =
1041                 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE;
1042         cmd->port = PORT_FIBRE;
1043         cmd->transceiver = XCVR_INTERNAL;
1044
1045         status = RTL_R32(TBICSR);
1046         cmd->advertising = (status & TBINwEnable) ?  ADVERTISED_Autoneg : 0;
1047         cmd->autoneg = !!(status & TBINwEnable);
1048
1049         cmd->speed = SPEED_1000;
1050         cmd->duplex = DUPLEX_FULL; /* Always set */
1051
1052         return 0;
1053 }
1054
1055 static int rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
1056 {
1057         struct rtl8169_private *tp = netdev_priv(dev);
1058
1059         return mii_ethtool_gset(&tp->mii, cmd);
1060 }
1061
1062 static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1063 {
1064         struct rtl8169_private *tp = netdev_priv(dev);
1065         unsigned long flags;
1066         int rc;
1067
1068         spin_lock_irqsave(&tp->lock, flags);
1069
1070         rc = tp->get_settings(dev, cmd);
1071
1072         spin_unlock_irqrestore(&tp->lock, flags);
1073         return rc;
1074 }
1075
1076 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1077                              void *p)
1078 {
1079         struct rtl8169_private *tp = netdev_priv(dev);
1080         unsigned long flags;
1081
1082         if (regs->len > R8169_REGS_SIZE)
1083                 regs->len = R8169_REGS_SIZE;
1084
1085         spin_lock_irqsave(&tp->lock, flags);
1086         memcpy_fromio(p, tp->mmio_addr, regs->len);
1087         spin_unlock_irqrestore(&tp->lock, flags);
1088 }
1089
1090 static u32 rtl8169_get_msglevel(struct net_device *dev)
1091 {
1092         struct rtl8169_private *tp = netdev_priv(dev);
1093
1094         return tp->msg_enable;
1095 }
1096
1097 static void rtl8169_set_msglevel(struct net_device *dev, u32 value)
1098 {
1099         struct rtl8169_private *tp = netdev_priv(dev);
1100
1101         tp->msg_enable = value;
1102 }
1103
1104 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
1105         "tx_packets",
1106         "rx_packets",
1107         "tx_errors",
1108         "rx_errors",
1109         "rx_missed",
1110         "align_errors",
1111         "tx_single_collisions",
1112         "tx_multi_collisions",
1113         "unicast",
1114         "broadcast",
1115         "multicast",
1116         "tx_aborted",
1117         "tx_underrun",
1118 };
1119
1120 static int rtl8169_get_sset_count(struct net_device *dev, int sset)
1121 {
1122         switch (sset) {
1123         case ETH_SS_STATS:
1124                 return ARRAY_SIZE(rtl8169_gstrings);
1125         default:
1126                 return -EOPNOTSUPP;
1127         }
1128 }
1129
1130 static void rtl8169_update_counters(struct net_device *dev)
1131 {
1132         struct rtl8169_private *tp = netdev_priv(dev);
1133         void __iomem *ioaddr = tp->mmio_addr;
1134         struct rtl8169_counters *counters;
1135         dma_addr_t paddr;
1136         u32 cmd;
1137         int wait = 1000;
1138
1139         /*
1140          * Some chips are unable to dump tally counters when the receiver
1141          * is disabled.
1142          */
1143         if ((RTL_R8(ChipCmd) & CmdRxEnb) == 0)
1144                 return;
1145
1146         counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
1147         if (!counters)
1148                 return;
1149
1150         RTL_W32(CounterAddrHigh, (u64)paddr >> 32);
1151         cmd = (u64)paddr & DMA_BIT_MASK(32);
1152         RTL_W32(CounterAddrLow, cmd);
1153         RTL_W32(CounterAddrLow, cmd | CounterDump);
1154
1155         while (wait--) {
1156                 if ((RTL_R32(CounterAddrLow) & CounterDump) == 0) {
1157                         /* copy updated counters */
1158                         memcpy(&tp->counters, counters, sizeof(*counters));
1159                         break;
1160                 }
1161                 udelay(10);
1162         }
1163
1164         RTL_W32(CounterAddrLow, 0);
1165         RTL_W32(CounterAddrHigh, 0);
1166
1167         pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
1168 }
1169
1170 static void rtl8169_get_ethtool_stats(struct net_device *dev,
1171                                       struct ethtool_stats *stats, u64 *data)
1172 {
1173         struct rtl8169_private *tp = netdev_priv(dev);
1174
1175         ASSERT_RTNL();
1176
1177         rtl8169_update_counters(dev);
1178
1179         data[0] = le64_to_cpu(tp->counters.tx_packets);
1180         data[1] = le64_to_cpu(tp->counters.rx_packets);
1181         data[2] = le64_to_cpu(tp->counters.tx_errors);
1182         data[3] = le32_to_cpu(tp->counters.rx_errors);
1183         data[4] = le16_to_cpu(tp->counters.rx_missed);
1184         data[5] = le16_to_cpu(tp->counters.align_errors);
1185         data[6] = le32_to_cpu(tp->counters.tx_one_collision);
1186         data[7] = le32_to_cpu(tp->counters.tx_multi_collision);
1187         data[8] = le64_to_cpu(tp->counters.rx_unicast);
1188         data[9] = le64_to_cpu(tp->counters.rx_broadcast);
1189         data[10] = le32_to_cpu(tp->counters.rx_multicast);
1190         data[11] = le16_to_cpu(tp->counters.tx_aborted);
1191         data[12] = le16_to_cpu(tp->counters.tx_underun);
1192 }
1193
1194 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1195 {
1196         switch(stringset) {
1197         case ETH_SS_STATS:
1198                 memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
1199                 break;
1200         }
1201 }
1202
1203 static const struct ethtool_ops rtl8169_ethtool_ops = {
1204         .get_drvinfo            = rtl8169_get_drvinfo,
1205         .get_regs_len           = rtl8169_get_regs_len,
1206         .get_link               = ethtool_op_get_link,
1207         .get_settings           = rtl8169_get_settings,
1208         .set_settings           = rtl8169_set_settings,
1209         .get_msglevel           = rtl8169_get_msglevel,
1210         .set_msglevel           = rtl8169_set_msglevel,
1211         .get_rx_csum            = rtl8169_get_rx_csum,
1212         .set_rx_csum            = rtl8169_set_rx_csum,
1213         .set_tx_csum            = ethtool_op_set_tx_csum,
1214         .set_sg                 = ethtool_op_set_sg,
1215         .set_tso                = ethtool_op_set_tso,
1216         .get_regs               = rtl8169_get_regs,
1217         .get_wol                = rtl8169_get_wol,
1218         .set_wol                = rtl8169_set_wol,
1219         .get_strings            = rtl8169_get_strings,
1220         .get_sset_count         = rtl8169_get_sset_count,
1221         .get_ethtool_stats      = rtl8169_get_ethtool_stats,
1222 };
1223
1224 static void rtl8169_write_gmii_reg_bit(void __iomem *ioaddr, int reg,
1225                                        int bitnum, int bitval)
1226 {
1227         int val;
1228
1229         val = mdio_read(ioaddr, reg);
1230         val = (bitval == 1) ?
1231                 val | (bitval << bitnum) :  val & ~(0x0001 << bitnum);
1232         mdio_write(ioaddr, reg, val & 0xffff);
1233 }
1234
1235 static void rtl8169_get_mac_version(struct rtl8169_private *tp,
1236                                     void __iomem *ioaddr)
1237 {
1238         /*
1239          * The driver currently handles the 8168Bf and the 8168Be identically
1240          * but they can be identified more specifically through the test below
1241          * if needed:
1242          *
1243          * (RTL_R32(TxConfig) & 0x700000) == 0x500000 ? 8168Bf : 8168Be
1244          *
1245          * Same thing for the 8101Eb and the 8101Ec:
1246          *
1247          * (RTL_R32(TxConfig) & 0x700000) == 0x200000 ? 8101Eb : 8101Ec
1248          */
1249         const struct {
1250                 u32 mask;
1251                 u32 val;
1252                 int mac_version;
1253         } mac_info[] = {
1254                 /* 8168D family. */
1255                 { 0x7c800000, 0x28000000,       RTL_GIGA_MAC_VER_25 },
1256
1257                 /* 8168C family. */
1258                 { 0x7cf00000, 0x3ca00000,       RTL_GIGA_MAC_VER_24 },
1259                 { 0x7cf00000, 0x3c900000,       RTL_GIGA_MAC_VER_23 },
1260                 { 0x7cf00000, 0x3c800000,       RTL_GIGA_MAC_VER_18 },
1261                 { 0x7c800000, 0x3c800000,       RTL_GIGA_MAC_VER_24 },
1262                 { 0x7cf00000, 0x3c000000,       RTL_GIGA_MAC_VER_19 },
1263                 { 0x7cf00000, 0x3c200000,       RTL_GIGA_MAC_VER_20 },
1264                 { 0x7cf00000, 0x3c300000,       RTL_GIGA_MAC_VER_21 },
1265                 { 0x7cf00000, 0x3c400000,       RTL_GIGA_MAC_VER_22 },
1266                 { 0x7c800000, 0x3c000000,       RTL_GIGA_MAC_VER_22 },
1267
1268                 /* 8168B family. */
1269                 { 0x7cf00000, 0x38000000,       RTL_GIGA_MAC_VER_12 },
1270                 { 0x7cf00000, 0x38500000,       RTL_GIGA_MAC_VER_17 },
1271                 { 0x7c800000, 0x38000000,       RTL_GIGA_MAC_VER_17 },
1272                 { 0x7c800000, 0x30000000,       RTL_GIGA_MAC_VER_11 },
1273
1274                 /* 8101 family. */
1275                 { 0x7cf00000, 0x34a00000,       RTL_GIGA_MAC_VER_09 },
1276                 { 0x7cf00000, 0x24a00000,       RTL_GIGA_MAC_VER_09 },
1277                 { 0x7cf00000, 0x34900000,       RTL_GIGA_MAC_VER_08 },
1278                 { 0x7cf00000, 0x24900000,       RTL_GIGA_MAC_VER_08 },
1279                 { 0x7cf00000, 0x34800000,       RTL_GIGA_MAC_VER_07 },
1280                 { 0x7cf00000, 0x24800000,       RTL_GIGA_MAC_VER_07 },
1281                 { 0x7cf00000, 0x34000000,       RTL_GIGA_MAC_VER_13 },
1282                 { 0x7cf00000, 0x34300000,       RTL_GIGA_MAC_VER_10 },
1283                 { 0x7cf00000, 0x34200000,       RTL_GIGA_MAC_VER_16 },
1284                 { 0x7c800000, 0x34800000,       RTL_GIGA_MAC_VER_09 },
1285                 { 0x7c800000, 0x24800000,       RTL_GIGA_MAC_VER_09 },
1286                 { 0x7c800000, 0x34000000,       RTL_GIGA_MAC_VER_16 },
1287                 /* FIXME: where did these entries come from ? -- FR */
1288                 { 0xfc800000, 0x38800000,       RTL_GIGA_MAC_VER_15 },
1289                 { 0xfc800000, 0x30800000,       RTL_GIGA_MAC_VER_14 },
1290
1291                 /* 8110 family. */
1292                 { 0xfc800000, 0x98000000,       RTL_GIGA_MAC_VER_06 },
1293                 { 0xfc800000, 0x18000000,       RTL_GIGA_MAC_VER_05 },
1294                 { 0xfc800000, 0x10000000,       RTL_GIGA_MAC_VER_04 },
1295                 { 0xfc800000, 0x04000000,       RTL_GIGA_MAC_VER_03 },
1296                 { 0xfc800000, 0x00800000,       RTL_GIGA_MAC_VER_02 },
1297                 { 0xfc800000, 0x00000000,       RTL_GIGA_MAC_VER_01 },
1298
1299                 { 0x00000000, 0x00000000,       RTL_GIGA_MAC_VER_01 }   /* Catch-all */
1300         }, *p = mac_info;
1301         u32 reg;
1302
1303         reg = RTL_R32(TxConfig);
1304         while ((reg & p->mask) != p->val)
1305                 p++;
1306         tp->mac_version = p->mac_version;
1307
1308         if (p->mask == 0x00000000) {
1309                 struct pci_dev *pdev = tp->pci_dev;
1310
1311                 dev_info(&pdev->dev, "unknown MAC (%08x)\n", reg);
1312         }
1313 }
1314
1315 static void rtl8169_print_mac_version(struct rtl8169_private *tp)
1316 {
1317         dprintk("mac_version = 0x%02x\n", tp->mac_version);
1318 }
1319
1320 struct phy_reg {
1321         u16 reg;
1322         u16 val;
1323 };
1324
1325 static void rtl_phy_write(void __iomem *ioaddr, struct phy_reg *regs, int len)
1326 {
1327         while (len-- > 0) {
1328                 mdio_write(ioaddr, regs->reg, regs->val);
1329                 regs++;
1330         }
1331 }
1332
1333 static void rtl8169s_hw_phy_config(void __iomem *ioaddr)
1334 {
1335         struct {
1336                 u16 regs[5]; /* Beware of bit-sign propagation */
1337         } phy_magic[5] = { {
1338                 { 0x0000,       //w 4 15 12 0
1339                   0x00a1,       //w 3 15 0 00a1
1340                   0x0008,       //w 2 15 0 0008
1341                   0x1020,       //w 1 15 0 1020
1342                   0x1000 } },{  //w 0 15 0 1000
1343                 { 0x7000,       //w 4 15 12 7
1344                   0xff41,       //w 3 15 0 ff41
1345                   0xde60,       //w 2 15 0 de60
1346                   0x0140,       //w 1 15 0 0140
1347                   0x0077 } },{  //w 0 15 0 0077
1348                 { 0xa000,       //w 4 15 12 a
1349                   0xdf01,       //w 3 15 0 df01
1350                   0xdf20,       //w 2 15 0 df20
1351                   0xff95,       //w 1 15 0 ff95
1352                   0xfa00 } },{  //w 0 15 0 fa00
1353                 { 0xb000,       //w 4 15 12 b
1354                   0xff41,       //w 3 15 0 ff41
1355                   0xde20,       //w 2 15 0 de20
1356                   0x0140,       //w 1 15 0 0140
1357                   0x00bb } },{  //w 0 15 0 00bb
1358                 { 0xf000,       //w 4 15 12 f
1359                   0xdf01,       //w 3 15 0 df01
1360                   0xdf20,       //w 2 15 0 df20
1361                   0xff95,       //w 1 15 0 ff95
1362                   0xbf00 }      //w 0 15 0 bf00
1363                 }
1364         }, *p = phy_magic;
1365         unsigned int i;
1366
1367         mdio_write(ioaddr, 0x1f, 0x0001);               //w 31 2 0 1
1368         mdio_write(ioaddr, 0x15, 0x1000);               //w 21 15 0 1000
1369         mdio_write(ioaddr, 0x18, 0x65c7);               //w 24 15 0 65c7
1370         rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0);   //w 4 11 11 0
1371
1372         for (i = 0; i < ARRAY_SIZE(phy_magic); i++, p++) {
1373                 int val, pos = 4;
1374
1375                 val = (mdio_read(ioaddr, pos) & 0x0fff) | (p->regs[0] & 0xffff);
1376                 mdio_write(ioaddr, pos, val);
1377                 while (--pos >= 0)
1378                         mdio_write(ioaddr, pos, p->regs[4 - pos] & 0xffff);
1379                 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 1); //w 4 11 11 1
1380                 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1381         }
1382         mdio_write(ioaddr, 0x1f, 0x0000); //w 31 2 0 0
1383 }
1384
1385 static void rtl8169sb_hw_phy_config(void __iomem *ioaddr)
1386 {
1387         struct phy_reg phy_reg_init[] = {
1388                 { 0x1f, 0x0002 },
1389                 { 0x01, 0x90d0 },
1390                 { 0x1f, 0x0000 }
1391         };
1392
1393         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1394 }
1395
1396 static void rtl8168bb_hw_phy_config(void __iomem *ioaddr)
1397 {
1398         struct phy_reg phy_reg_init[] = {
1399                 { 0x10, 0xf41b },
1400                 { 0x1f, 0x0000 }
1401         };
1402
1403         mdio_write(ioaddr, 0x1f, 0x0001);
1404         mdio_patch(ioaddr, 0x16, 1 << 0);
1405
1406         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1407 }
1408
1409 static void rtl8168bef_hw_phy_config(void __iomem *ioaddr)
1410 {
1411         struct phy_reg phy_reg_init[] = {
1412                 { 0x1f, 0x0001 },
1413                 { 0x10, 0xf41b },
1414                 { 0x1f, 0x0000 }
1415         };
1416
1417         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1418 }
1419
1420 static void rtl8168cp_1_hw_phy_config(void __iomem *ioaddr)
1421 {
1422         struct phy_reg phy_reg_init[] = {
1423                 { 0x1f, 0x0000 },
1424                 { 0x1d, 0x0f00 },
1425                 { 0x1f, 0x0002 },
1426                 { 0x0c, 0x1ec8 },
1427                 { 0x1f, 0x0000 }
1428         };
1429
1430         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1431 }
1432
1433 static void rtl8168cp_2_hw_phy_config(void __iomem *ioaddr)
1434 {
1435         struct phy_reg phy_reg_init[] = {
1436                 { 0x1f, 0x0001 },
1437                 { 0x1d, 0x3d98 },
1438                 { 0x1f, 0x0000 }
1439         };
1440
1441         mdio_write(ioaddr, 0x1f, 0x0000);
1442         mdio_patch(ioaddr, 0x14, 1 << 5);
1443         mdio_patch(ioaddr, 0x0d, 1 << 5);
1444
1445         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1446 }
1447
1448 static void rtl8168c_1_hw_phy_config(void __iomem *ioaddr)
1449 {
1450         struct phy_reg phy_reg_init[] = {
1451                 { 0x1f, 0x0001 },
1452                 { 0x12, 0x2300 },
1453                 { 0x1f, 0x0002 },
1454                 { 0x00, 0x88d4 },
1455                 { 0x01, 0x82b1 },
1456                 { 0x03, 0x7002 },
1457                 { 0x08, 0x9e30 },
1458                 { 0x09, 0x01f0 },
1459                 { 0x0a, 0x5500 },
1460                 { 0x0c, 0x00c8 },
1461                 { 0x1f, 0x0003 },
1462                 { 0x12, 0xc096 },
1463                 { 0x16, 0x000a },
1464                 { 0x1f, 0x0000 },
1465                 { 0x1f, 0x0000 },
1466                 { 0x09, 0x2000 },
1467                 { 0x09, 0x0000 }
1468         };
1469
1470         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1471
1472         mdio_patch(ioaddr, 0x14, 1 << 5);
1473         mdio_patch(ioaddr, 0x0d, 1 << 5);
1474         mdio_write(ioaddr, 0x1f, 0x0000);
1475 }
1476
1477 static void rtl8168c_2_hw_phy_config(void __iomem *ioaddr)
1478 {
1479         struct phy_reg phy_reg_init[] = {
1480                 { 0x1f, 0x0001 },
1481                 { 0x12, 0x2300 },
1482                 { 0x03, 0x802f },
1483                 { 0x02, 0x4f02 },
1484                 { 0x01, 0x0409 },
1485                 { 0x00, 0xf099 },
1486                 { 0x04, 0x9800 },
1487                 { 0x04, 0x9000 },
1488                 { 0x1d, 0x3d98 },
1489                 { 0x1f, 0x0002 },
1490                 { 0x0c, 0x7eb8 },
1491                 { 0x06, 0x0761 },
1492                 { 0x1f, 0x0003 },
1493                 { 0x16, 0x0f0a },
1494                 { 0x1f, 0x0000 }
1495         };
1496
1497         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1498
1499         mdio_patch(ioaddr, 0x16, 1 << 0);
1500         mdio_patch(ioaddr, 0x14, 1 << 5);
1501         mdio_patch(ioaddr, 0x0d, 1 << 5);
1502         mdio_write(ioaddr, 0x1f, 0x0000);
1503 }
1504
1505 static void rtl8168c_3_hw_phy_config(void __iomem *ioaddr)
1506 {
1507         struct phy_reg phy_reg_init[] = {
1508                 { 0x1f, 0x0001 },
1509                 { 0x12, 0x2300 },
1510                 { 0x1d, 0x3d98 },
1511                 { 0x1f, 0x0002 },
1512                 { 0x0c, 0x7eb8 },
1513                 { 0x06, 0x5461 },
1514                 { 0x1f, 0x0003 },
1515                 { 0x16, 0x0f0a },
1516                 { 0x1f, 0x0000 }
1517         };
1518
1519         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1520
1521         mdio_patch(ioaddr, 0x16, 1 << 0);
1522         mdio_patch(ioaddr, 0x14, 1 << 5);
1523         mdio_patch(ioaddr, 0x0d, 1 << 5);
1524         mdio_write(ioaddr, 0x1f, 0x0000);
1525 }
1526
1527 static void rtl8168c_4_hw_phy_config(void __iomem *ioaddr)
1528 {
1529         rtl8168c_3_hw_phy_config(ioaddr);
1530 }
1531
1532 static void rtl8168d_hw_phy_config(void __iomem *ioaddr)
1533 {
1534         struct phy_reg phy_reg_init_0[] = {
1535                 { 0x1f, 0x0001 },
1536                 { 0x09, 0x2770 },
1537                 { 0x08, 0x04d0 },
1538                 { 0x0b, 0xad15 },
1539                 { 0x0c, 0x5bf0 },
1540                 { 0x1c, 0xf101 },
1541                 { 0x1f, 0x0003 },
1542                 { 0x14, 0x94d7 },
1543                 { 0x12, 0xf4d6 },
1544                 { 0x09, 0xca0f },
1545                 { 0x1f, 0x0002 },
1546                 { 0x0b, 0x0b10 },
1547                 { 0x0c, 0xd1f7 },
1548                 { 0x1f, 0x0002 },
1549                 { 0x06, 0x5461 },
1550                 { 0x1f, 0x0002 },
1551                 { 0x05, 0x6662 },
1552                 { 0x1f, 0x0000 },
1553                 { 0x14, 0x0060 },
1554                 { 0x1f, 0x0000 },
1555                 { 0x0d, 0xf8a0 },
1556                 { 0x1f, 0x0005 },
1557                 { 0x05, 0xffc2 }
1558         };
1559
1560         rtl_phy_write(ioaddr, phy_reg_init_0, ARRAY_SIZE(phy_reg_init_0));
1561
1562         if (mdio_read(ioaddr, 0x06) == 0xc400) {
1563                 struct phy_reg phy_reg_init_1[] = {
1564                         { 0x1f, 0x0005 },
1565                         { 0x01, 0x0300 },
1566                         { 0x1f, 0x0000 },
1567                         { 0x11, 0x401c },
1568                         { 0x16, 0x4100 },
1569                         { 0x1f, 0x0005 },
1570                         { 0x07, 0x0010 },
1571                         { 0x05, 0x83dc },
1572                         { 0x06, 0x087d },
1573                         { 0x05, 0x8300 },
1574                         { 0x06, 0x0101 },
1575                         { 0x06, 0x05f8 },
1576                         { 0x06, 0xf9fa },
1577                         { 0x06, 0xfbef },
1578                         { 0x06, 0x79e2 },
1579                         { 0x06, 0x835f },
1580                         { 0x06, 0xe0f8 },
1581                         { 0x06, 0x9ae1 },
1582                         { 0x06, 0xf89b },
1583                         { 0x06, 0xef31 },
1584                         { 0x06, 0x3b65 },
1585                         { 0x06, 0xaa07 },
1586                         { 0x06, 0x81e4 },
1587                         { 0x06, 0xf89a },
1588                         { 0x06, 0xe5f8 },
1589                         { 0x06, 0x9baf },
1590                         { 0x06, 0x06ae },
1591                         { 0x05, 0x83dc },
1592                         { 0x06, 0x8300 },
1593                 };
1594
1595                 rtl_phy_write(ioaddr, phy_reg_init_1,
1596                               ARRAY_SIZE(phy_reg_init_1));
1597         }
1598
1599         mdio_write(ioaddr, 0x1f, 0x0000);
1600 }
1601
1602 static void rtl8102e_hw_phy_config(void __iomem *ioaddr)
1603 {
1604         struct phy_reg phy_reg_init[] = {
1605                 { 0x1f, 0x0003 },
1606                 { 0x08, 0x441d },
1607                 { 0x01, 0x9100 },
1608                 { 0x1f, 0x0000 }
1609         };
1610
1611         mdio_write(ioaddr, 0x1f, 0x0000);
1612         mdio_patch(ioaddr, 0x11, 1 << 12);
1613         mdio_patch(ioaddr, 0x19, 1 << 13);
1614
1615         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1616 }
1617
1618 static void rtl_hw_phy_config(struct net_device *dev)
1619 {
1620         struct rtl8169_private *tp = netdev_priv(dev);
1621         void __iomem *ioaddr = tp->mmio_addr;
1622
1623         rtl8169_print_mac_version(tp);
1624
1625         switch (tp->mac_version) {
1626         case RTL_GIGA_MAC_VER_01:
1627                 break;
1628         case RTL_GIGA_MAC_VER_02:
1629         case RTL_GIGA_MAC_VER_03:
1630                 rtl8169s_hw_phy_config(ioaddr);
1631                 break;
1632         case RTL_GIGA_MAC_VER_04:
1633                 rtl8169sb_hw_phy_config(ioaddr);
1634                 break;
1635         case RTL_GIGA_MAC_VER_07:
1636         case RTL_GIGA_MAC_VER_08:
1637         case RTL_GIGA_MAC_VER_09:
1638                 rtl8102e_hw_phy_config(ioaddr);
1639                 break;
1640         case RTL_GIGA_MAC_VER_11:
1641                 rtl8168bb_hw_phy_config(ioaddr);
1642                 break;
1643         case RTL_GIGA_MAC_VER_12:
1644                 rtl8168bef_hw_phy_config(ioaddr);
1645                 break;
1646         case RTL_GIGA_MAC_VER_17:
1647                 rtl8168bef_hw_phy_config(ioaddr);
1648                 break;
1649         case RTL_GIGA_MAC_VER_18:
1650                 rtl8168cp_1_hw_phy_config(ioaddr);
1651                 break;
1652         case RTL_GIGA_MAC_VER_19:
1653                 rtl8168c_1_hw_phy_config(ioaddr);
1654                 break;
1655         case RTL_GIGA_MAC_VER_20:
1656                 rtl8168c_2_hw_phy_config(ioaddr);
1657                 break;
1658         case RTL_GIGA_MAC_VER_21:
1659                 rtl8168c_3_hw_phy_config(ioaddr);
1660                 break;
1661         case RTL_GIGA_MAC_VER_22:
1662                 rtl8168c_4_hw_phy_config(ioaddr);
1663                 break;
1664         case RTL_GIGA_MAC_VER_23:
1665         case RTL_GIGA_MAC_VER_24:
1666                 rtl8168cp_2_hw_phy_config(ioaddr);
1667                 break;
1668         case RTL_GIGA_MAC_VER_25:
1669                 rtl8168d_hw_phy_config(ioaddr);
1670                 break;
1671
1672         default:
1673                 break;
1674         }
1675 }
1676
1677 static void rtl8169_phy_timer(unsigned long __opaque)
1678 {
1679         struct net_device *dev = (struct net_device *)__opaque;
1680         struct rtl8169_private *tp = netdev_priv(dev);
1681         struct timer_list *timer = &tp->timer;
1682         void __iomem *ioaddr = tp->mmio_addr;
1683         unsigned long timeout = RTL8169_PHY_TIMEOUT;
1684
1685         assert(tp->mac_version > RTL_GIGA_MAC_VER_01);
1686
1687         if (!(tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
1688                 return;
1689
1690         spin_lock_irq(&tp->lock);
1691
1692         if (tp->phy_reset_pending(ioaddr)) {
1693                 /*
1694                  * A busy loop could burn quite a few cycles on nowadays CPU.
1695                  * Let's delay the execution of the timer for a few ticks.
1696                  */
1697                 timeout = HZ/10;
1698                 goto out_mod_timer;
1699         }
1700
1701         if (tp->link_ok(ioaddr))
1702                 goto out_unlock;
1703
1704         if (netif_msg_link(tp))
1705                 printk(KERN_WARNING "%s: PHY reset until link up\n", dev->name);
1706
1707         tp->phy_reset_enable(ioaddr);
1708
1709 out_mod_timer:
1710         mod_timer(timer, jiffies + timeout);
1711 out_unlock:
1712         spin_unlock_irq(&tp->lock);
1713 }
1714
1715 static inline void rtl8169_delete_timer(struct net_device *dev)
1716 {
1717         struct rtl8169_private *tp = netdev_priv(dev);
1718         struct timer_list *timer = &tp->timer;
1719
1720         if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1721                 return;
1722
1723         del_timer_sync(timer);
1724 }
1725
1726 static inline void rtl8169_request_timer(struct net_device *dev)
1727 {
1728         struct rtl8169_private *tp = netdev_priv(dev);
1729         struct timer_list *timer = &tp->timer;
1730
1731         if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1732                 return;
1733
1734         mod_timer(timer, jiffies + RTL8169_PHY_TIMEOUT);
1735 }
1736
1737 #ifdef CONFIG_NET_POLL_CONTROLLER
1738 /*
1739  * Polling 'interrupt' - used by things like netconsole to send skbs
1740  * without having to re-enable interrupts. It's not called while
1741  * the interrupt routine is executing.
1742  */
1743 static void rtl8169_netpoll(struct net_device *dev)
1744 {
1745         struct rtl8169_private *tp = netdev_priv(dev);
1746         struct pci_dev *pdev = tp->pci_dev;
1747
1748         disable_irq(pdev->irq);
1749         rtl8169_interrupt(pdev->irq, dev);
1750         enable_irq(pdev->irq);
1751 }
1752 #endif
1753
1754 static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
1755                                   void __iomem *ioaddr)
1756 {
1757         iounmap(ioaddr);
1758         pci_release_regions(pdev);
1759         pci_disable_device(pdev);
1760         free_netdev(dev);
1761 }
1762
1763 static void rtl8169_phy_reset(struct net_device *dev,
1764                               struct rtl8169_private *tp)
1765 {
1766         void __iomem *ioaddr = tp->mmio_addr;
1767         unsigned int i;
1768
1769         tp->phy_reset_enable(ioaddr);
1770         for (i = 0; i < 100; i++) {
1771                 if (!tp->phy_reset_pending(ioaddr))
1772                         return;
1773                 msleep(1);
1774         }
1775         if (netif_msg_link(tp))
1776                 printk(KERN_ERR "%s: PHY reset failed.\n", dev->name);
1777 }
1778
1779 static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
1780 {
1781         void __iomem *ioaddr = tp->mmio_addr;
1782
1783         rtl_hw_phy_config(dev);
1784
1785         if (tp->mac_version <= RTL_GIGA_MAC_VER_06) {
1786                 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1787                 RTL_W8(0x82, 0x01);
1788         }
1789
1790         pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
1791
1792         if (tp->mac_version <= RTL_GIGA_MAC_VER_06)
1793                 pci_write_config_byte(tp->pci_dev, PCI_CACHE_LINE_SIZE, 0x08);
1794
1795         if (tp->mac_version == RTL_GIGA_MAC_VER_02) {
1796                 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1797                 RTL_W8(0x82, 0x01);
1798                 dprintk("Set PHY Reg 0x0bh = 0x00h\n");
1799                 mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
1800         }
1801
1802         rtl8169_phy_reset(dev, tp);
1803
1804         /*
1805          * rtl8169_set_speed_xmii takes good care of the Fast Ethernet
1806          * only 8101. Don't panic.
1807          */
1808         rtl8169_set_speed(dev, AUTONEG_ENABLE, SPEED_1000, DUPLEX_FULL);
1809
1810         if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))
1811                 printk(KERN_INFO PFX "%s: TBI auto-negotiating\n", dev->name);
1812 }
1813
1814 static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
1815 {
1816         void __iomem *ioaddr = tp->mmio_addr;
1817         u32 high;
1818         u32 low;
1819
1820         low  = addr[0] | (addr[1] << 8) | (addr[2] << 16) | (addr[3] << 24);
1821         high = addr[4] | (addr[5] << 8);
1822
1823         spin_lock_irq(&tp->lock);
1824
1825         RTL_W8(Cfg9346, Cfg9346_Unlock);
1826         RTL_W32(MAC0, low);
1827         RTL_W32(MAC4, high);
1828         RTL_W8(Cfg9346, Cfg9346_Lock);
1829
1830         spin_unlock_irq(&tp->lock);
1831 }
1832
1833 static int rtl_set_mac_address(struct net_device *dev, void *p)
1834 {
1835         struct rtl8169_private *tp = netdev_priv(dev);
1836         struct sockaddr *addr = p;
1837
1838         if (!is_valid_ether_addr(addr->sa_data))
1839                 return -EADDRNOTAVAIL;
1840
1841         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1842
1843         rtl_rar_set(tp, dev->dev_addr);
1844
1845         return 0;
1846 }
1847
1848 static int rtl8169_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1849 {
1850         struct rtl8169_private *tp = netdev_priv(dev);
1851         struct mii_ioctl_data *data = if_mii(ifr);
1852
1853         return netif_running(dev) ? tp->do_ioctl(tp, data, cmd) : -ENODEV;
1854 }
1855
1856 static int rtl_xmii_ioctl(struct rtl8169_private *tp, struct mii_ioctl_data *data, int cmd)
1857 {
1858         switch (cmd) {
1859         case SIOCGMIIPHY:
1860                 data->phy_id = 32; /* Internal PHY */
1861                 return 0;
1862
1863         case SIOCGMIIREG:
1864                 data->val_out = mdio_read(tp->mmio_addr, data->reg_num & 0x1f);
1865                 return 0;
1866
1867         case SIOCSMIIREG:
1868                 if (!capable(CAP_NET_ADMIN))
1869                         return -EPERM;
1870                 mdio_write(tp->mmio_addr, data->reg_num & 0x1f, data->val_in);
1871                 return 0;
1872         }
1873         return -EOPNOTSUPP;
1874 }
1875
1876 static int rtl_tbi_ioctl(struct rtl8169_private *tp, struct mii_ioctl_data *data, int cmd)
1877 {
1878         return -EOPNOTSUPP;
1879 }
1880
1881 static const struct rtl_cfg_info {
1882         void (*hw_start)(struct net_device *);
1883         unsigned int region;
1884         unsigned int align;
1885         u16 intr_event;
1886         u16 napi_event;
1887         unsigned features;
1888 } rtl_cfg_infos [] = {
1889         [RTL_CFG_0] = {
1890                 .hw_start       = rtl_hw_start_8169,
1891                 .region         = 1,
1892                 .align          = 0,
1893                 .intr_event     = SYSErr | LinkChg | RxOverflow |
1894                                   RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1895                 .napi_event     = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1896                 .features       = RTL_FEATURE_GMII
1897         },
1898         [RTL_CFG_1] = {
1899                 .hw_start       = rtl_hw_start_8168,
1900                 .region         = 2,
1901                 .align          = 8,
1902                 .intr_event     = SYSErr | LinkChg | RxOverflow |
1903                                   TxErr | TxOK | RxOK | RxErr,
1904                 .napi_event     = TxErr | TxOK | RxOK | RxOverflow,
1905                 .features       = RTL_FEATURE_GMII | RTL_FEATURE_MSI
1906         },
1907         [RTL_CFG_2] = {
1908                 .hw_start       = rtl_hw_start_8101,
1909                 .region         = 2,
1910                 .align          = 8,
1911                 .intr_event     = SYSErr | LinkChg | RxOverflow | PCSTimeout |
1912                                   RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1913                 .napi_event     = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1914                 .features       = RTL_FEATURE_MSI
1915         }
1916 };
1917
1918 /* Cfg9346_Unlock assumed. */
1919 static unsigned rtl_try_msi(struct pci_dev *pdev, void __iomem *ioaddr,
1920                             const struct rtl_cfg_info *cfg)
1921 {
1922         unsigned msi = 0;
1923         u8 cfg2;
1924
1925         cfg2 = RTL_R8(Config2) & ~MSIEnable;
1926         if (cfg->features & RTL_FEATURE_MSI) {
1927                 if (pci_enable_msi(pdev)) {
1928                         dev_info(&pdev->dev, "no MSI. Back to INTx.\n");
1929                 } else {
1930                         cfg2 |= MSIEnable;
1931                         msi = RTL_FEATURE_MSI;
1932                 }
1933         }
1934         RTL_W8(Config2, cfg2);
1935         return msi;
1936 }
1937
1938 static void rtl_disable_msi(struct pci_dev *pdev, struct rtl8169_private *tp)
1939 {
1940         if (tp->features & RTL_FEATURE_MSI) {
1941                 pci_disable_msi(pdev);
1942                 tp->features &= ~RTL_FEATURE_MSI;
1943         }
1944 }
1945
1946 static const struct net_device_ops rtl8169_netdev_ops = {
1947         .ndo_open               = rtl8169_open,
1948         .ndo_stop               = rtl8169_close,
1949         .ndo_get_stats          = rtl8169_get_stats,
1950         .ndo_start_xmit         = rtl8169_start_xmit,
1951         .ndo_tx_timeout         = rtl8169_tx_timeout,
1952         .ndo_validate_addr      = eth_validate_addr,
1953         .ndo_change_mtu         = rtl8169_change_mtu,
1954         .ndo_set_mac_address    = rtl_set_mac_address,
1955         .ndo_do_ioctl           = rtl8169_ioctl,
1956         .ndo_set_multicast_list = rtl_set_rx_mode,
1957 #ifdef CONFIG_R8169_VLAN
1958         .ndo_vlan_rx_register   = rtl8169_vlan_rx_register,
1959 #endif
1960 #ifdef CONFIG_NET_POLL_CONTROLLER
1961         .ndo_poll_controller    = rtl8169_netpoll,
1962 #endif
1963
1964 };
1965
1966 static int __devinit
1967 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1968 {
1969         const struct rtl_cfg_info *cfg = rtl_cfg_infos + ent->driver_data;
1970         const unsigned int region = cfg->region;
1971         struct rtl8169_private *tp;
1972         struct mii_if_info *mii;
1973         struct net_device *dev;
1974         void __iomem *ioaddr;
1975         unsigned int i;
1976         int rc;
1977
1978         if (netif_msg_drv(&debug)) {
1979                 printk(KERN_INFO "%s Gigabit Ethernet driver %s loaded\n",
1980                        MODULENAME, RTL8169_VERSION);
1981         }
1982
1983         dev = alloc_etherdev(sizeof (*tp));
1984         if (!dev) {
1985                 if (netif_msg_drv(&debug))
1986                         dev_err(&pdev->dev, "unable to alloc new ethernet\n");
1987                 rc = -ENOMEM;
1988                 goto out;
1989         }
1990
1991         SET_NETDEV_DEV(dev, &pdev->dev);
1992         dev->netdev_ops = &rtl8169_netdev_ops;
1993         tp = netdev_priv(dev);
1994         tp->dev = dev;
1995         tp->pci_dev = pdev;
1996         tp->msg_enable = netif_msg_init(debug.msg_enable, R8169_MSG_DEFAULT);
1997
1998         mii = &tp->mii;
1999         mii->dev = dev;
2000         mii->mdio_read = rtl_mdio_read;
2001         mii->mdio_write = rtl_mdio_write;
2002         mii->phy_id_mask = 0x1f;
2003         mii->reg_num_mask = 0x1f;
2004         mii->supports_gmii = !!(cfg->features & RTL_FEATURE_GMII);
2005
2006         /* enable device (incl. PCI PM wakeup and hotplug setup) */
2007         rc = pci_enable_device(pdev);
2008         if (rc < 0) {
2009                 if (netif_msg_probe(tp))
2010                         dev_err(&pdev->dev, "enable failure\n");
2011                 goto err_out_free_dev_1;
2012         }
2013
2014         rc = pci_set_mwi(pdev);
2015         if (rc < 0)
2016                 goto err_out_disable_2;
2017
2018         /* make sure PCI base addr 1 is MMIO */
2019         if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
2020                 if (netif_msg_probe(tp)) {
2021                         dev_err(&pdev->dev,
2022                                 "region #%d not an MMIO resource, aborting\n",
2023                                 region);
2024                 }
2025                 rc = -ENODEV;
2026                 goto err_out_mwi_3;
2027         }
2028
2029         /* check for weird/broken PCI region reporting */
2030         if (pci_resource_len(pdev, region) < R8169_REGS_SIZE) {
2031                 if (netif_msg_probe(tp)) {
2032                         dev_err(&pdev->dev,
2033                                 "Invalid PCI region size(s), aborting\n");
2034                 }
2035                 rc = -ENODEV;
2036                 goto err_out_mwi_3;
2037         }
2038
2039         rc = pci_request_regions(pdev, MODULENAME);
2040         if (rc < 0) {
2041                 if (netif_msg_probe(tp))
2042                         dev_err(&pdev->dev, "could not request regions.\n");
2043                 goto err_out_mwi_3;
2044         }
2045
2046         tp->cp_cmd = PCIMulRW | RxChkSum;
2047
2048         if ((sizeof(dma_addr_t) > 4) &&
2049             !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) && use_dac) {
2050                 tp->cp_cmd |= PCIDAC;
2051                 dev->features |= NETIF_F_HIGHDMA;
2052         } else {
2053                 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2054                 if (rc < 0) {
2055                         if (netif_msg_probe(tp)) {
2056                                 dev_err(&pdev->dev,
2057                                         "DMA configuration failed.\n");
2058                         }
2059                         goto err_out_free_res_4;
2060                 }
2061         }
2062
2063         pci_set_master(pdev);
2064
2065         /* ioremap MMIO region */
2066         ioaddr = ioremap(pci_resource_start(pdev, region), R8169_REGS_SIZE);
2067         if (!ioaddr) {
2068                 if (netif_msg_probe(tp))
2069                         dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
2070                 rc = -EIO;
2071                 goto err_out_free_res_4;
2072         }
2073
2074         tp->pcie_cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
2075         if (!tp->pcie_cap && netif_msg_probe(tp))
2076                 dev_info(&pdev->dev, "no PCI Express capability\n");
2077
2078         RTL_W16(IntrMask, 0x0000);
2079
2080         /* Soft reset the chip. */
2081         RTL_W8(ChipCmd, CmdReset);
2082
2083         /* Check that the chip has finished the reset. */
2084         for (i = 0; i < 100; i++) {
2085                 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
2086                         break;
2087                 msleep_interruptible(1);
2088         }
2089
2090         RTL_W16(IntrStatus, 0xffff);
2091
2092         /* Identify chip attached to board */
2093         rtl8169_get_mac_version(tp, ioaddr);
2094
2095         rtl8169_print_mac_version(tp);
2096
2097         for (i = 0; i < ARRAY_SIZE(rtl_chip_info); i++) {
2098                 if (tp->mac_version == rtl_chip_info[i].mac_version)
2099                         break;
2100         }
2101         if (i == ARRAY_SIZE(rtl_chip_info)) {
2102                 /* Unknown chip: assume array element #0, original RTL-8169 */
2103                 if (netif_msg_probe(tp)) {
2104                         dev_printk(KERN_DEBUG, &pdev->dev,
2105                                 "unknown chip version, assuming %s\n",
2106                                 rtl_chip_info[0].name);
2107                 }
2108                 i = 0;
2109         }
2110         tp->chipset = i;
2111
2112         RTL_W8(Cfg9346, Cfg9346_Unlock);
2113         RTL_W8(Config1, RTL_R8(Config1) | PMEnable);
2114         RTL_W8(Config5, RTL_R8(Config5) & PMEStatus);
2115         if ((RTL_R8(Config3) & (LinkUp | MagicPacket)) != 0)
2116                 tp->features |= RTL_FEATURE_WOL;
2117         if ((RTL_R8(Config5) & (UWF | BWF | MWF)) != 0)
2118                 tp->features |= RTL_FEATURE_WOL;
2119         tp->features |= rtl_try_msi(pdev, ioaddr, cfg);
2120         RTL_W8(Cfg9346, Cfg9346_Lock);
2121
2122         if ((tp->mac_version <= RTL_GIGA_MAC_VER_06) &&
2123             (RTL_R8(PHYstatus) & TBI_Enable)) {
2124                 tp->set_speed = rtl8169_set_speed_tbi;
2125                 tp->get_settings = rtl8169_gset_tbi;
2126                 tp->phy_reset_enable = rtl8169_tbi_reset_enable;
2127                 tp->phy_reset_pending = rtl8169_tbi_reset_pending;
2128                 tp->link_ok = rtl8169_tbi_link_ok;
2129                 tp->do_ioctl = rtl_tbi_ioctl;
2130
2131                 tp->phy_1000_ctrl_reg = ADVERTISE_1000FULL; /* Implied by TBI */
2132         } else {
2133                 tp->set_speed = rtl8169_set_speed_xmii;
2134                 tp->get_settings = rtl8169_gset_xmii;
2135                 tp->phy_reset_enable = rtl8169_xmii_reset_enable;
2136                 tp->phy_reset_pending = rtl8169_xmii_reset_pending;
2137                 tp->link_ok = rtl8169_xmii_link_ok;
2138                 tp->do_ioctl = rtl_xmii_ioctl;
2139         }
2140
2141         spin_lock_init(&tp->lock);
2142
2143         tp->mmio_addr = ioaddr;
2144
2145         /* Get MAC address */
2146         for (i = 0; i < MAC_ADDR_LEN; i++)
2147                 dev->dev_addr[i] = RTL_R8(MAC0 + i);
2148         memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
2149
2150         SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
2151         dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
2152         dev->irq = pdev->irq;
2153         dev->base_addr = (unsigned long) ioaddr;
2154
2155         netif_napi_add(dev, &tp->napi, rtl8169_poll, R8169_NAPI_WEIGHT);
2156
2157 #ifdef CONFIG_R8169_VLAN
2158         dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
2159 #endif
2160
2161         tp->intr_mask = 0xffff;
2162         tp->align = cfg->align;
2163         tp->hw_start = cfg->hw_start;
2164         tp->intr_event = cfg->intr_event;
2165         tp->napi_event = cfg->napi_event;
2166
2167         init_timer(&tp->timer);
2168         tp->timer.data = (unsigned long) dev;
2169         tp->timer.function = rtl8169_phy_timer;
2170
2171         rc = register_netdev(dev);
2172         if (rc < 0)
2173                 goto err_out_msi_5;
2174
2175         pci_set_drvdata(pdev, dev);
2176
2177         if (netif_msg_probe(tp)) {
2178                 u32 xid = RTL_R32(TxConfig) & 0x7cf0f8ff;
2179
2180                 printk(KERN_INFO "%s: %s at 0x%lx, "
2181                        "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
2182                        "XID %08x IRQ %d\n",
2183                        dev->name,
2184                        rtl_chip_info[tp->chipset].name,
2185                        dev->base_addr,
2186                        dev->dev_addr[0], dev->dev_addr[1],
2187                        dev->dev_addr[2], dev->dev_addr[3],
2188                        dev->dev_addr[4], dev->dev_addr[5], xid, dev->irq);
2189         }
2190
2191         rtl8169_init_phy(dev, tp);
2192         device_set_wakeup_enable(&pdev->dev, tp->features & RTL_FEATURE_WOL);
2193
2194 out:
2195         return rc;
2196
2197 err_out_msi_5:
2198         rtl_disable_msi(pdev, tp);
2199         iounmap(ioaddr);
2200 err_out_free_res_4:
2201         pci_release_regions(pdev);
2202 err_out_mwi_3:
2203         pci_clear_mwi(pdev);
2204 err_out_disable_2:
2205         pci_disable_device(pdev);
2206 err_out_free_dev_1:
2207         free_netdev(dev);
2208         goto out;
2209 }
2210
2211 static void __devexit rtl8169_remove_one(struct pci_dev *pdev)
2212 {
2213         struct net_device *dev = pci_get_drvdata(pdev);
2214         struct rtl8169_private *tp = netdev_priv(dev);
2215
2216         flush_scheduled_work();
2217
2218         unregister_netdev(dev);
2219         rtl_disable_msi(pdev, tp);
2220         rtl8169_release_board(pdev, dev, tp->mmio_addr);
2221         pci_set_drvdata(pdev, NULL);
2222 }
2223
2224 static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
2225                                   struct net_device *dev)
2226 {
2227         unsigned int mtu = dev->mtu;
2228
2229         tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
2230 }
2231
2232 static int rtl8169_open(struct net_device *dev)
2233 {
2234         struct rtl8169_private *tp = netdev_priv(dev);
2235         struct pci_dev *pdev = tp->pci_dev;
2236         int retval = -ENOMEM;
2237
2238
2239         rtl8169_set_rxbufsize(tp, dev);
2240
2241         /*
2242          * Rx and Tx desscriptors needs 256 bytes alignment.
2243          * pci_alloc_consistent provides more.
2244          */
2245         tp->TxDescArray = pci_alloc_consistent(pdev, R8169_TX_RING_BYTES,
2246                                                &tp->TxPhyAddr);
2247         if (!tp->TxDescArray)
2248                 goto out;
2249
2250         tp->RxDescArray = pci_alloc_consistent(pdev, R8169_RX_RING_BYTES,
2251                                                &tp->RxPhyAddr);
2252         if (!tp->RxDescArray)
2253                 goto err_free_tx_0;
2254
2255         retval = rtl8169_init_ring(dev);
2256         if (retval < 0)
2257                 goto err_free_rx_1;
2258
2259         INIT_DELAYED_WORK(&tp->task, NULL);
2260
2261         smp_mb();
2262
2263         retval = request_irq(dev->irq, rtl8169_interrupt,
2264                              (tp->features & RTL_FEATURE_MSI) ? 0 : IRQF_SHARED,
2265                              dev->name, dev);
2266         if (retval < 0)
2267                 goto err_release_ring_2;
2268
2269         napi_enable(&tp->napi);
2270
2271         rtl_hw_start(dev);
2272
2273         rtl8169_request_timer(dev);
2274
2275         rtl8169_check_link_status(dev, tp, tp->mmio_addr);
2276 out:
2277         return retval;
2278
2279 err_release_ring_2:
2280         rtl8169_rx_clear(tp);
2281 err_free_rx_1:
2282         pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
2283                             tp->RxPhyAddr);
2284 err_free_tx_0:
2285         pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
2286                             tp->TxPhyAddr);
2287         goto out;
2288 }
2289
2290 static void rtl8169_hw_reset(void __iomem *ioaddr)
2291 {
2292         /* Disable interrupts */
2293         rtl8169_irq_mask_and_ack(ioaddr);
2294
2295         /* Reset the chipset */
2296         RTL_W8(ChipCmd, CmdReset);
2297
2298         /* PCI commit */
2299         RTL_R8(ChipCmd);
2300 }
2301
2302 static void rtl_set_rx_tx_config_registers(struct rtl8169_private *tp)
2303 {
2304         void __iomem *ioaddr = tp->mmio_addr;
2305         u32 cfg = rtl8169_rx_config;
2306
2307         cfg |= (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
2308         RTL_W32(RxConfig, cfg);
2309
2310         /* Set DMA burst size and Interframe Gap Time */
2311         RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
2312                 (InterFrameGap << TxInterFrameGapShift));
2313 }
2314
2315 static void rtl_hw_start(struct net_device *dev)
2316 {
2317         struct rtl8169_private *tp = netdev_priv(dev);
2318         void __iomem *ioaddr = tp->mmio_addr;
2319         unsigned int i;
2320
2321         /* Soft reset the chip. */
2322         RTL_W8(ChipCmd, CmdReset);
2323
2324         /* Check that the chip has finished the reset. */
2325         for (i = 0; i < 100; i++) {
2326                 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
2327                         break;
2328                 msleep_interruptible(1);
2329         }
2330
2331         tp->hw_start(dev);
2332
2333         netif_start_queue(dev);
2334 }
2335
2336
2337 static void rtl_set_rx_tx_desc_registers(struct rtl8169_private *tp,
2338                                          void __iomem *ioaddr)
2339 {
2340         /*
2341          * Magic spell: some iop3xx ARM board needs the TxDescAddrHigh
2342          * register to be written before TxDescAddrLow to work.
2343          * Switching from MMIO to I/O access fixes the issue as well.
2344          */
2345         RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr) >> 32);
2346         RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr) & DMA_BIT_MASK(32));
2347         RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr) >> 32);
2348         RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr) & DMA_BIT_MASK(32));
2349 }
2350
2351 static u16 rtl_rw_cpluscmd(void __iomem *ioaddr)
2352 {
2353         u16 cmd;
2354
2355         cmd = RTL_R16(CPlusCmd);
2356         RTL_W16(CPlusCmd, cmd);
2357         return cmd;
2358 }
2359
2360 static void rtl_set_rx_max_size(void __iomem *ioaddr)
2361 {
2362         /* Low hurts. Let's disable the filtering. */
2363         RTL_W16(RxMaxSize, 16383);
2364 }
2365
2366 static void rtl8169_set_magic_reg(void __iomem *ioaddr, unsigned mac_version)
2367 {
2368         struct {
2369                 u32 mac_version;
2370                 u32 clk;
2371                 u32 val;
2372         } cfg2_info [] = {
2373                 { RTL_GIGA_MAC_VER_05, PCI_Clock_33MHz, 0x000fff00 }, // 8110SCd
2374                 { RTL_GIGA_MAC_VER_05, PCI_Clock_66MHz, 0x000fffff },
2375                 { RTL_GIGA_MAC_VER_06, PCI_Clock_33MHz, 0x00ffff00 }, // 8110SCe
2376                 { RTL_GIGA_MAC_VER_06, PCI_Clock_66MHz, 0x00ffffff }
2377         }, *p = cfg2_info;
2378         unsigned int i;
2379         u32 clk;
2380
2381         clk = RTL_R8(Config2) & PCI_Clock_66MHz;
2382         for (i = 0; i < ARRAY_SIZE(cfg2_info); i++, p++) {
2383                 if ((p->mac_version == mac_version) && (p->clk == clk)) {
2384                         RTL_W32(0x7c, p->val);
2385                         break;
2386                 }
2387         }
2388 }
2389
2390 static void rtl_hw_start_8169(struct net_device *dev)
2391 {
2392         struct rtl8169_private *tp = netdev_priv(dev);
2393         void __iomem *ioaddr = tp->mmio_addr;
2394         struct pci_dev *pdev = tp->pci_dev;
2395
2396         if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
2397                 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) | PCIMulRW);
2398                 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x08);
2399         }
2400
2401         RTL_W8(Cfg9346, Cfg9346_Unlock);
2402         if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2403             (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2404             (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2405             (tp->mac_version == RTL_GIGA_MAC_VER_04))
2406                 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2407
2408         RTL_W8(EarlyTxThres, EarlyTxThld);
2409
2410         rtl_set_rx_max_size(ioaddr);
2411
2412         if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2413             (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2414             (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2415             (tp->mac_version == RTL_GIGA_MAC_VER_04))
2416                 rtl_set_rx_tx_config_registers(tp);
2417
2418         tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2419
2420         if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2421             (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
2422                 dprintk("Set MAC Reg C+CR Offset 0xE0. "
2423                         "Bit-3 and bit-14 MUST be 1\n");
2424                 tp->cp_cmd |= (1 << 14);
2425         }
2426
2427         RTL_W16(CPlusCmd, tp->cp_cmd);
2428
2429         rtl8169_set_magic_reg(ioaddr, tp->mac_version);
2430
2431         /*
2432          * Undocumented corner. Supposedly:
2433          * (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
2434          */
2435         RTL_W16(IntrMitigate, 0x0000);
2436
2437         rtl_set_rx_tx_desc_registers(tp, ioaddr);
2438
2439         if ((tp->mac_version != RTL_GIGA_MAC_VER_01) &&
2440             (tp->mac_version != RTL_GIGA_MAC_VER_02) &&
2441             (tp->mac_version != RTL_GIGA_MAC_VER_03) &&
2442             (tp->mac_version != RTL_GIGA_MAC_VER_04)) {
2443                 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2444                 rtl_set_rx_tx_config_registers(tp);
2445         }
2446
2447         RTL_W8(Cfg9346, Cfg9346_Lock);
2448
2449         /* Initially a 10 us delay. Turned it into a PCI commit. - FR */
2450         RTL_R8(IntrMask);
2451
2452         RTL_W32(RxMissed, 0);
2453
2454         rtl_set_rx_mode(dev);
2455
2456         /* no early-rx interrupts */
2457         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2458
2459         /* Enable all known interrupts by setting the interrupt mask. */
2460         RTL_W16(IntrMask, tp->intr_event);
2461 }
2462
2463 static void rtl_tx_performance_tweak(struct pci_dev *pdev, u16 force)
2464 {
2465         struct net_device *dev = pci_get_drvdata(pdev);
2466         struct rtl8169_private *tp = netdev_priv(dev);
2467         int cap = tp->pcie_cap;
2468
2469         if (cap) {
2470                 u16 ctl;
2471
2472                 pci_read_config_word(pdev, cap + PCI_EXP_DEVCTL, &ctl);
2473                 ctl = (ctl & ~PCI_EXP_DEVCTL_READRQ) | force;
2474                 pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL, ctl);
2475         }
2476 }
2477
2478 static void rtl_csi_access_enable(void __iomem *ioaddr)
2479 {
2480         u32 csi;
2481
2482         csi = rtl_csi_read(ioaddr, 0x070c) & 0x00ffffff;
2483         rtl_csi_write(ioaddr, 0x070c, csi | 0x27000000);
2484 }
2485
2486 struct ephy_info {
2487         unsigned int offset;
2488         u16 mask;
2489         u16 bits;
2490 };
2491
2492 static void rtl_ephy_init(void __iomem *ioaddr, struct ephy_info *e, int len)
2493 {
2494         u16 w;
2495
2496         while (len-- > 0) {
2497                 w = (rtl_ephy_read(ioaddr, e->offset) & ~e->mask) | e->bits;
2498                 rtl_ephy_write(ioaddr, e->offset, w);
2499                 e++;
2500         }
2501 }
2502
2503 static void rtl_disable_clock_request(struct pci_dev *pdev)
2504 {
2505         struct net_device *dev = pci_get_drvdata(pdev);
2506         struct rtl8169_private *tp = netdev_priv(dev);
2507         int cap = tp->pcie_cap;
2508
2509         if (cap) {
2510                 u16 ctl;
2511
2512                 pci_read_config_word(pdev, cap + PCI_EXP_LNKCTL, &ctl);
2513                 ctl &= ~PCI_EXP_LNKCTL_CLKREQ_EN;
2514                 pci_write_config_word(pdev, cap + PCI_EXP_LNKCTL, ctl);
2515         }
2516 }
2517
2518 #define R8168_CPCMD_QUIRK_MASK (\
2519         EnableBist | \
2520         Mac_dbgo_oe | \
2521         Force_half_dup | \
2522         Force_rxflow_en | \
2523         Force_txflow_en | \
2524         Cxpl_dbg_sel | \
2525         ASF | \
2526         PktCntrDisable | \
2527         Mac_dbgo_sel)
2528
2529 static void rtl_hw_start_8168bb(void __iomem *ioaddr, struct pci_dev *pdev)
2530 {
2531         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2532
2533         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2534
2535         rtl_tx_performance_tweak(pdev,
2536                 (0x5 << MAX_READ_REQUEST_SHIFT) | PCI_EXP_DEVCTL_NOSNOOP_EN);
2537 }
2538
2539 static void rtl_hw_start_8168bef(void __iomem *ioaddr, struct pci_dev *pdev)
2540 {
2541         rtl_hw_start_8168bb(ioaddr, pdev);
2542
2543         RTL_W8(EarlyTxThres, EarlyTxThld);
2544
2545         RTL_W8(Config4, RTL_R8(Config4) & ~(1 << 0));
2546 }
2547
2548 static void __rtl_hw_start_8168cp(void __iomem *ioaddr, struct pci_dev *pdev)
2549 {
2550         RTL_W8(Config1, RTL_R8(Config1) | Speed_down);
2551
2552         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2553
2554         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2555
2556         rtl_disable_clock_request(pdev);
2557
2558         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2559 }
2560
2561 static void rtl_hw_start_8168cp_1(void __iomem *ioaddr, struct pci_dev *pdev)
2562 {
2563         static struct ephy_info e_info_8168cp[] = {
2564                 { 0x01, 0,      0x0001 },
2565                 { 0x02, 0x0800, 0x1000 },
2566                 { 0x03, 0,      0x0042 },
2567                 { 0x06, 0x0080, 0x0000 },
2568                 { 0x07, 0,      0x2000 }
2569         };
2570
2571         rtl_csi_access_enable(ioaddr);
2572
2573         rtl_ephy_init(ioaddr, e_info_8168cp, ARRAY_SIZE(e_info_8168cp));
2574
2575         __rtl_hw_start_8168cp(ioaddr, pdev);
2576 }
2577
2578 static void rtl_hw_start_8168cp_2(void __iomem *ioaddr, struct pci_dev *pdev)
2579 {
2580         rtl_csi_access_enable(ioaddr);
2581
2582         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2583
2584         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2585
2586         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2587 }
2588
2589 static void rtl_hw_start_8168cp_3(void __iomem *ioaddr, struct pci_dev *pdev)
2590 {
2591         rtl_csi_access_enable(ioaddr);
2592
2593         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2594
2595         /* Magic. */
2596         RTL_W8(DBG_REG, 0x20);
2597
2598         RTL_W8(EarlyTxThres, EarlyTxThld);
2599
2600         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2601
2602         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2603 }
2604
2605 static void rtl_hw_start_8168c_1(void __iomem *ioaddr, struct pci_dev *pdev)
2606 {
2607         static struct ephy_info e_info_8168c_1[] = {
2608                 { 0x02, 0x0800, 0x1000 },
2609                 { 0x03, 0,      0x0002 },
2610                 { 0x06, 0x0080, 0x0000 }
2611         };
2612
2613         rtl_csi_access_enable(ioaddr);
2614
2615         RTL_W8(DBG_REG, 0x06 | FIX_NAK_1 | FIX_NAK_2);
2616
2617         rtl_ephy_init(ioaddr, e_info_8168c_1, ARRAY_SIZE(e_info_8168c_1));
2618
2619         __rtl_hw_start_8168cp(ioaddr, pdev);
2620 }
2621
2622 static void rtl_hw_start_8168c_2(void __iomem *ioaddr, struct pci_dev *pdev)
2623 {
2624         static struct ephy_info e_info_8168c_2[] = {
2625                 { 0x01, 0,      0x0001 },
2626                 { 0x03, 0x0400, 0x0220 }
2627         };
2628
2629         rtl_csi_access_enable(ioaddr);
2630
2631         rtl_ephy_init(ioaddr, e_info_8168c_2, ARRAY_SIZE(e_info_8168c_2));
2632
2633         __rtl_hw_start_8168cp(ioaddr, pdev);
2634 }
2635
2636 static void rtl_hw_start_8168c_3(void __iomem *ioaddr, struct pci_dev *pdev)
2637 {
2638         rtl_hw_start_8168c_2(ioaddr, pdev);
2639 }
2640
2641 static void rtl_hw_start_8168c_4(void __iomem *ioaddr, struct pci_dev *pdev)
2642 {
2643         rtl_csi_access_enable(ioaddr);
2644
2645         __rtl_hw_start_8168cp(ioaddr, pdev);
2646 }
2647
2648 static void rtl_hw_start_8168d(void __iomem *ioaddr, struct pci_dev *pdev)
2649 {
2650         rtl_csi_access_enable(ioaddr);
2651
2652         rtl_disable_clock_request(pdev);
2653
2654         RTL_W8(EarlyTxThres, EarlyTxThld);
2655
2656         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2657
2658         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2659 }
2660
2661 static void rtl_hw_start_8168(struct net_device *dev)
2662 {
2663         struct rtl8169_private *tp = netdev_priv(dev);
2664         void __iomem *ioaddr = tp->mmio_addr;
2665         struct pci_dev *pdev = tp->pci_dev;
2666
2667         RTL_W8(Cfg9346, Cfg9346_Unlock);
2668
2669         RTL_W8(EarlyTxThres, EarlyTxThld);
2670
2671         rtl_set_rx_max_size(ioaddr);
2672
2673         tp->cp_cmd |= RTL_R16(CPlusCmd) | PktCntrDisable | INTT_1;
2674
2675         RTL_W16(CPlusCmd, tp->cp_cmd);
2676
2677         RTL_W16(IntrMitigate, 0x5151);
2678
2679         /* Work around for RxFIFO overflow. */
2680         if (tp->mac_version == RTL_GIGA_MAC_VER_11) {
2681                 tp->intr_event |= RxFIFOOver | PCSTimeout;
2682                 tp->intr_event &= ~RxOverflow;
2683         }
2684
2685         rtl_set_rx_tx_desc_registers(tp, ioaddr);
2686
2687         rtl_set_rx_mode(dev);
2688
2689         RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
2690                 (InterFrameGap << TxInterFrameGapShift));
2691
2692         RTL_R8(IntrMask);
2693
2694         switch (tp->mac_version) {
2695         case RTL_GIGA_MAC_VER_11:
2696                 rtl_hw_start_8168bb(ioaddr, pdev);
2697         break;
2698
2699         case RTL_GIGA_MAC_VER_12:
2700         case RTL_GIGA_MAC_VER_17:
2701                 rtl_hw_start_8168bef(ioaddr, pdev);
2702         break;
2703
2704         case RTL_GIGA_MAC_VER_18:
2705                 rtl_hw_start_8168cp_1(ioaddr, pdev);
2706         break;
2707
2708         case RTL_GIGA_MAC_VER_19:
2709                 rtl_hw_start_8168c_1(ioaddr, pdev);
2710         break;
2711
2712         case RTL_GIGA_MAC_VER_20:
2713                 rtl_hw_start_8168c_2(ioaddr, pdev);
2714         break;
2715
2716         case RTL_GIGA_MAC_VER_21:
2717                 rtl_hw_start_8168c_3(ioaddr, pdev);
2718         break;
2719
2720         case RTL_GIGA_MAC_VER_22:
2721                 rtl_hw_start_8168c_4(ioaddr, pdev);
2722         break;
2723
2724         case RTL_GIGA_MAC_VER_23:
2725                 rtl_hw_start_8168cp_2(ioaddr, pdev);
2726         break;
2727
2728         case RTL_GIGA_MAC_VER_24:
2729                 rtl_hw_start_8168cp_3(ioaddr, pdev);
2730         break;
2731
2732         case RTL_GIGA_MAC_VER_25:
2733                 rtl_hw_start_8168d(ioaddr, pdev);
2734         break;
2735
2736         default:
2737                 printk(KERN_ERR PFX "%s: unknown chipset (mac_version = %d).\n",
2738                         dev->name, tp->mac_version);
2739         break;
2740         }
2741
2742         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2743
2744         RTL_W8(Cfg9346, Cfg9346_Lock);
2745
2746         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2747
2748         RTL_W16(IntrMask, tp->intr_event);
2749 }
2750
2751 #define R810X_CPCMD_QUIRK_MASK (\
2752         EnableBist | \
2753         Mac_dbgo_oe | \
2754         Force_half_dup | \
2755         Force_half_dup | \
2756         Force_txflow_en | \
2757         Cxpl_dbg_sel | \
2758         ASF | \
2759         PktCntrDisable | \
2760         PCIDAC | \
2761         PCIMulRW)
2762
2763 static void rtl_hw_start_8102e_1(void __iomem *ioaddr, struct pci_dev *pdev)
2764 {
2765         static struct ephy_info e_info_8102e_1[] = {
2766                 { 0x01, 0, 0x6e65 },
2767                 { 0x02, 0, 0x091f },
2768                 { 0x03, 0, 0xc2f9 },
2769                 { 0x06, 0, 0xafb5 },
2770                 { 0x07, 0, 0x0e00 },
2771                 { 0x19, 0, 0xec80 },
2772                 { 0x01, 0, 0x2e65 },
2773                 { 0x01, 0, 0x6e65 }
2774         };
2775         u8 cfg1;
2776
2777         rtl_csi_access_enable(ioaddr);
2778
2779         RTL_W8(DBG_REG, FIX_NAK_1);
2780
2781         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2782
2783         RTL_W8(Config1,
2784                LEDS1 | LEDS0 | Speed_down | MEMMAP | IOMAP | VPD | PMEnable);
2785         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2786
2787         cfg1 = RTL_R8(Config1);
2788         if ((cfg1 & LEDS0) && (cfg1 & LEDS1))
2789                 RTL_W8(Config1, cfg1 & ~LEDS0);
2790
2791         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2792
2793         rtl_ephy_init(ioaddr, e_info_8102e_1, ARRAY_SIZE(e_info_8102e_1));
2794 }
2795
2796 static void rtl_hw_start_8102e_2(void __iomem *ioaddr, struct pci_dev *pdev)
2797 {
2798         rtl_csi_access_enable(ioaddr);
2799
2800         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2801
2802         RTL_W8(Config1, MEMMAP | IOMAP | VPD | PMEnable);
2803         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2804
2805         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2806 }
2807
2808 static void rtl_hw_start_8102e_3(void __iomem *ioaddr, struct pci_dev *pdev)
2809 {
2810         rtl_hw_start_8102e_2(ioaddr, pdev);
2811
2812         rtl_ephy_write(ioaddr, 0x03, 0xc2f9);
2813 }
2814
2815 static void rtl_hw_start_8101(struct net_device *dev)
2816 {
2817         struct rtl8169_private *tp = netdev_priv(dev);
2818         void __iomem *ioaddr = tp->mmio_addr;
2819         struct pci_dev *pdev = tp->pci_dev;
2820
2821         if ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
2822             (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
2823                 int cap = tp->pcie_cap;
2824
2825                 if (cap) {
2826                         pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL,
2827                                               PCI_EXP_DEVCTL_NOSNOOP_EN);
2828                 }
2829         }
2830
2831         switch (tp->mac_version) {
2832         case RTL_GIGA_MAC_VER_07:
2833                 rtl_hw_start_8102e_1(ioaddr, pdev);
2834                 break;
2835
2836         case RTL_GIGA_MAC_VER_08:
2837                 rtl_hw_start_8102e_3(ioaddr, pdev);
2838                 break;
2839
2840         case RTL_GIGA_MAC_VER_09:
2841                 rtl_hw_start_8102e_2(ioaddr, pdev);
2842                 break;
2843         }
2844
2845         RTL_W8(Cfg9346, Cfg9346_Unlock);
2846
2847         RTL_W8(EarlyTxThres, EarlyTxThld);
2848
2849         rtl_set_rx_max_size(ioaddr);
2850
2851         tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2852
2853         RTL_W16(CPlusCmd, tp->cp_cmd);
2854
2855         RTL_W16(IntrMitigate, 0x0000);
2856
2857         rtl_set_rx_tx_desc_registers(tp, ioaddr);
2858
2859         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2860         rtl_set_rx_tx_config_registers(tp);
2861
2862         RTL_W8(Cfg9346, Cfg9346_Lock);
2863
2864         RTL_R8(IntrMask);
2865
2866         rtl_set_rx_mode(dev);
2867
2868         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2869
2870         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xf000);
2871
2872         RTL_W16(IntrMask, tp->intr_event);
2873 }
2874
2875 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
2876 {
2877         struct rtl8169_private *tp = netdev_priv(dev);
2878         int ret = 0;
2879
2880         if (new_mtu < ETH_ZLEN || new_mtu > SafeMtu)
2881                 return -EINVAL;
2882
2883         dev->mtu = new_mtu;
2884
2885         if (!netif_running(dev))
2886                 goto out;
2887
2888         rtl8169_down(dev);
2889
2890         rtl8169_set_rxbufsize(tp, dev);
2891
2892         ret = rtl8169_init_ring(dev);
2893         if (ret < 0)
2894                 goto out;
2895
2896         napi_enable(&tp->napi);
2897
2898         rtl_hw_start(dev);
2899
2900         rtl8169_request_timer(dev);
2901
2902 out:
2903         return ret;
2904 }
2905
2906 static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
2907 {
2908         desc->addr = cpu_to_le64(0x0badbadbadbadbadull);
2909         desc->opts1 &= ~cpu_to_le32(DescOwn | RsvdMask);
2910 }
2911
2912 static void rtl8169_free_rx_skb(struct rtl8169_private *tp,
2913                                 struct sk_buff **sk_buff, struct RxDesc *desc)
2914 {
2915         struct pci_dev *pdev = tp->pci_dev;
2916
2917         pci_unmap_single(pdev, le64_to_cpu(desc->addr), tp->rx_buf_sz,
2918                          PCI_DMA_FROMDEVICE);
2919         dev_kfree_skb(*sk_buff);
2920         *sk_buff = NULL;
2921         rtl8169_make_unusable_by_asic(desc);
2922 }
2923
2924 static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
2925 {
2926         u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
2927
2928         desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
2929 }
2930
2931 static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
2932                                        u32 rx_buf_sz)
2933 {
2934         desc->addr = cpu_to_le64(mapping);
2935         wmb();
2936         rtl8169_mark_to_asic(desc, rx_buf_sz);
2937 }
2938
2939 static struct sk_buff *rtl8169_alloc_rx_skb(struct pci_dev *pdev,
2940                                             struct net_device *dev,
2941                                             struct RxDesc *desc, int rx_buf_sz,
2942                                             unsigned int align)
2943 {
2944         struct sk_buff *skb;
2945         dma_addr_t mapping;
2946         unsigned int pad;
2947
2948         pad = align ? align : NET_IP_ALIGN;
2949
2950         skb = netdev_alloc_skb(dev, rx_buf_sz + pad);
2951         if (!skb)
2952                 goto err_out;
2953
2954         skb_reserve(skb, align ? ((pad - 1) & (unsigned long)skb->data) : pad);
2955
2956         mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
2957                                  PCI_DMA_FROMDEVICE);
2958
2959         rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
2960 out:
2961         return skb;
2962
2963 err_out:
2964         rtl8169_make_unusable_by_asic(desc);
2965         goto out;
2966 }
2967
2968 static void rtl8169_rx_clear(struct rtl8169_private *tp)
2969 {
2970         unsigned int i;
2971
2972         for (i = 0; i < NUM_RX_DESC; i++) {
2973                 if (tp->Rx_skbuff[i]) {
2974                         rtl8169_free_rx_skb(tp, tp->Rx_skbuff + i,
2975                                             tp->RxDescArray + i);
2976                 }
2977         }
2978 }
2979
2980 static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
2981                            u32 start, u32 end)
2982 {
2983         u32 cur;
2984
2985         for (cur = start; end - cur != 0; cur++) {
2986                 struct sk_buff *skb;
2987                 unsigned int i = cur % NUM_RX_DESC;
2988
2989                 WARN_ON((s32)(end - cur) < 0);
2990
2991                 if (tp->Rx_skbuff[i])
2992                         continue;
2993
2994                 skb = rtl8169_alloc_rx_skb(tp->pci_dev, dev,
2995                                            tp->RxDescArray + i,
2996                                            tp->rx_buf_sz, tp->align);
2997                 if (!skb)
2998                         break;
2999
3000                 tp->Rx_skbuff[i] = skb;
3001         }
3002         return cur - start;
3003 }
3004
3005 static inline void rtl8169_mark_as_last_descriptor(struct RxDesc *desc)
3006 {
3007         desc->opts1 |= cpu_to_le32(RingEnd);
3008 }
3009
3010 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
3011 {
3012         tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
3013 }
3014
3015 static int rtl8169_init_ring(struct net_device *dev)
3016 {
3017         struct rtl8169_private *tp = netdev_priv(dev);
3018
3019         rtl8169_init_ring_indexes(tp);
3020
3021         memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
3022         memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
3023
3024         if (rtl8169_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
3025                 goto err_out;
3026
3027         rtl8169_mark_as_last_descriptor(tp->RxDescArray + NUM_RX_DESC - 1);
3028
3029         return 0;
3030
3031 err_out:
3032         rtl8169_rx_clear(tp);
3033         return -ENOMEM;
3034 }
3035
3036 static void rtl8169_unmap_tx_skb(struct pci_dev *pdev, struct ring_info *tx_skb,
3037                                  struct TxDesc *desc)
3038 {
3039         unsigned int len = tx_skb->len;
3040
3041         pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
3042         desc->opts1 = 0x00;
3043         desc->opts2 = 0x00;
3044         desc->addr = 0x00;
3045         tx_skb->len = 0;
3046 }
3047
3048 static void rtl8169_tx_clear(struct rtl8169_private *tp)
3049 {
3050         unsigned int i;
3051
3052         for (i = tp->dirty_tx; i < tp->dirty_tx + NUM_TX_DESC; i++) {
3053                 unsigned int entry = i % NUM_TX_DESC;
3054                 struct ring_info *tx_skb = tp->tx_skb + entry;
3055                 unsigned int len = tx_skb->len;
3056
3057                 if (len) {
3058                         struct sk_buff *skb = tx_skb->skb;
3059
3060                         rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb,
3061                                              tp->TxDescArray + entry);
3062                         if (skb) {
3063                                 dev_kfree_skb(skb);
3064                                 tx_skb->skb = NULL;
3065                         }
3066                         tp->dev->stats.tx_dropped++;
3067                 }
3068         }
3069         tp->cur_tx = tp->dirty_tx = 0;
3070 }
3071
3072 static void rtl8169_schedule_work(struct net_device *dev, work_func_t task)
3073 {
3074         struct rtl8169_private *tp = netdev_priv(dev);
3075
3076         PREPARE_DELAYED_WORK(&tp->task, task);
3077         schedule_delayed_work(&tp->task, 4);
3078 }
3079
3080 static void rtl8169_wait_for_quiescence(struct net_device *dev)
3081 {
3082         struct rtl8169_private *tp = netdev_priv(dev);
3083         void __iomem *ioaddr = tp->mmio_addr;
3084
3085         synchronize_irq(dev->irq);
3086
3087         /* Wait for any pending NAPI task to complete */
3088         napi_disable(&tp->napi);
3089
3090         rtl8169_irq_mask_and_ack(ioaddr);
3091
3092         tp->intr_mask = 0xffff;
3093         RTL_W16(IntrMask, tp->intr_event);
3094         napi_enable(&tp->napi);
3095 }
3096
3097 static void rtl8169_reinit_task(struct work_struct *work)
3098 {
3099         struct rtl8169_private *tp =
3100                 container_of(work, struct rtl8169_private, task.work);
3101         struct net_device *dev = tp->dev;
3102         int ret;
3103
3104         rtnl_lock();
3105
3106         if (!netif_running(dev))
3107                 goto out_unlock;
3108
3109         rtl8169_wait_for_quiescence(dev);
3110         rtl8169_close(dev);
3111
3112         ret = rtl8169_open(dev);
3113         if (unlikely(ret < 0)) {
3114                 if (net_ratelimit() && netif_msg_drv(tp)) {
3115                         printk(KERN_ERR PFX "%s: reinit failure (status = %d)."
3116                                " Rescheduling.\n", dev->name, ret);
3117                 }
3118                 rtl8169_schedule_work(dev, rtl8169_reinit_task);
3119         }
3120
3121 out_unlock:
3122         rtnl_unlock();
3123 }
3124
3125 static void rtl8169_reset_task(struct work_struct *work)
3126 {
3127         struct rtl8169_private *tp =
3128                 container_of(work, struct rtl8169_private, task.work);
3129         struct net_device *dev = tp->dev;
3130
3131         rtnl_lock();
3132
3133         if (!netif_running(dev))
3134                 goto out_unlock;
3135
3136         rtl8169_wait_for_quiescence(dev);
3137
3138         rtl8169_rx_interrupt(dev, tp, tp->mmio_addr, ~(u32)0);
3139         rtl8169_tx_clear(tp);
3140
3141         if (tp->dirty_rx == tp->cur_rx) {
3142                 rtl8169_init_ring_indexes(tp);
3143                 rtl_hw_start(dev);
3144                 netif_wake_queue(dev);
3145                 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
3146         } else {
3147                 if (net_ratelimit() && netif_msg_intr(tp)) {
3148                         printk(KERN_EMERG PFX "%s: Rx buffers shortage\n",
3149                                dev->name);
3150                 }
3151                 rtl8169_schedule_work(dev, rtl8169_reset_task);
3152         }
3153
3154 out_unlock:
3155         rtnl_unlock();
3156 }
3157
3158 static void rtl8169_tx_timeout(struct net_device *dev)
3159 {
3160         struct rtl8169_private *tp = netdev_priv(dev);
3161
3162         rtl8169_hw_reset(tp->mmio_addr);
3163
3164         /* Let's wait a bit while any (async) irq lands on */
3165         rtl8169_schedule_work(dev, rtl8169_reset_task);
3166 }
3167
3168 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
3169                               u32 opts1)
3170 {
3171         struct skb_shared_info *info = skb_shinfo(skb);
3172         unsigned int cur_frag, entry;
3173         struct TxDesc * uninitialized_var(txd);
3174
3175         entry = tp->cur_tx;
3176         for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
3177                 skb_frag_t *frag = info->frags + cur_frag;
3178                 dma_addr_t mapping;
3179                 u32 status, len;
3180                 void *addr;
3181
3182                 entry = (entry + 1) % NUM_TX_DESC;
3183
3184                 txd = tp->TxDescArray + entry;
3185                 len = frag->size;
3186                 addr = ((void *) page_address(frag->page)) + frag->page_offset;
3187                 mapping = pci_map_single(tp->pci_dev, addr, len, PCI_DMA_TODEVICE);
3188
3189                 /* anti gcc 2.95.3 bugware (sic) */
3190                 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
3191
3192                 txd->opts1 = cpu_to_le32(status);
3193                 txd->addr = cpu_to_le64(mapping);
3194
3195                 tp->tx_skb[entry].len = len;
3196         }
3197
3198         if (cur_frag) {
3199                 tp->tx_skb[entry].skb = skb;
3200                 txd->opts1 |= cpu_to_le32(LastFrag);
3201         }
3202
3203         return cur_frag;
3204 }
3205
3206 static inline u32 rtl8169_tso_csum(struct sk_buff *skb, struct net_device *dev)
3207 {
3208         if (dev->features & NETIF_F_TSO) {
3209                 u32 mss = skb_shinfo(skb)->gso_size;
3210
3211                 if (mss)
3212                         return LargeSend | ((mss & MSSMask) << MSSShift);
3213         }
3214         if (skb->ip_summed == CHECKSUM_PARTIAL) {
3215                 const struct iphdr *ip = ip_hdr(skb);
3216
3217                 if (ip->protocol == IPPROTO_TCP)
3218                         return IPCS | TCPCS;
3219                 else if (ip->protocol == IPPROTO_UDP)
3220                         return IPCS | UDPCS;
3221                 WARN_ON(1);     /* we need a WARN() */
3222         }
3223         return 0;
3224 }
3225
3226 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev)
3227 {
3228         struct rtl8169_private *tp = netdev_priv(dev);
3229         unsigned int frags, entry = tp->cur_tx % NUM_TX_DESC;
3230         struct TxDesc *txd = tp->TxDescArray + entry;
3231         void __iomem *ioaddr = tp->mmio_addr;
3232         dma_addr_t mapping;
3233         u32 status, len;
3234         u32 opts1;
3235         int ret = NETDEV_TX_OK;
3236
3237         if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) {
3238                 if (netif_msg_drv(tp)) {
3239                         printk(KERN_ERR
3240                                "%s: BUG! Tx Ring full when queue awake!\n",
3241                                dev->name);
3242                 }
3243                 goto err_stop;
3244         }
3245
3246         if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
3247                 goto err_stop;
3248
3249         opts1 = DescOwn | rtl8169_tso_csum(skb, dev);
3250
3251         frags = rtl8169_xmit_frags(tp, skb, opts1);
3252         if (frags) {
3253                 len = skb_headlen(skb);
3254                 opts1 |= FirstFrag;
3255         } else {
3256                 len = skb->len;
3257                 opts1 |= FirstFrag | LastFrag;
3258                 tp->tx_skb[entry].skb = skb;
3259         }
3260
3261         mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
3262
3263         tp->tx_skb[entry].len = len;
3264         txd->addr = cpu_to_le64(mapping);
3265         txd->opts2 = cpu_to_le32(rtl8169_tx_vlan_tag(tp, skb));
3266
3267         wmb();
3268
3269         /* anti gcc 2.95.3 bugware (sic) */
3270         status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
3271         txd->opts1 = cpu_to_le32(status);
3272
3273         dev->trans_start = jiffies;
3274
3275         tp->cur_tx += frags + 1;
3276
3277         smp_wmb();
3278
3279         RTL_W8(TxPoll, NPQ);    /* set polling bit */
3280
3281         if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
3282                 netif_stop_queue(dev);
3283                 smp_rmb();
3284                 if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
3285                         netif_wake_queue(dev);
3286         }
3287
3288 out:
3289         return ret;
3290
3291 err_stop:
3292         netif_stop_queue(dev);
3293         ret = NETDEV_TX_BUSY;
3294         dev->stats.tx_dropped++;
3295         goto out;
3296 }
3297
3298 static void rtl8169_pcierr_interrupt(struct net_device *dev)
3299 {
3300         struct rtl8169_private *tp = netdev_priv(dev);
3301         struct pci_dev *pdev = tp->pci_dev;
3302         void __iomem *ioaddr = tp->mmio_addr;
3303         u16 pci_status, pci_cmd;
3304
3305         pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
3306         pci_read_config_word(pdev, PCI_STATUS, &pci_status);
3307
3308         if (netif_msg_intr(tp)) {
3309                 printk(KERN_ERR
3310                        "%s: PCI error (cmd = 0x%04x, status = 0x%04x).\n",
3311                        dev->name, pci_cmd, pci_status);
3312         }
3313
3314         /*
3315          * The recovery sequence below admits a very elaborated explanation:
3316          * - it seems to work;
3317          * - I did not see what else could be done;
3318          * - it makes iop3xx happy.
3319          *
3320          * Feel free to adjust to your needs.
3321          */
3322         if (pdev->broken_parity_status)
3323                 pci_cmd &= ~PCI_COMMAND_PARITY;
3324         else
3325                 pci_cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY;
3326
3327         pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
3328
3329         pci_write_config_word(pdev, PCI_STATUS,
3330                 pci_status & (PCI_STATUS_DETECTED_PARITY |
3331                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
3332                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
3333
3334         /* The infamous DAC f*ckup only happens at boot time */
3335         if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
3336                 if (netif_msg_intr(tp))
3337                         printk(KERN_INFO "%s: disabling PCI DAC.\n", dev->name);
3338                 tp->cp_cmd &= ~PCIDAC;
3339                 RTL_W16(CPlusCmd, tp->cp_cmd);
3340                 dev->features &= ~NETIF_F_HIGHDMA;
3341         }
3342
3343         rtl8169_hw_reset(ioaddr);
3344
3345         rtl8169_schedule_work(dev, rtl8169_reinit_task);
3346 }
3347
3348 static void rtl8169_tx_interrupt(struct net_device *dev,
3349                                  struct rtl8169_private *tp,
3350                                  void __iomem *ioaddr)
3351 {
3352         unsigned int dirty_tx, tx_left;
3353
3354         dirty_tx = tp->dirty_tx;
3355         smp_rmb();
3356         tx_left = tp->cur_tx - dirty_tx;
3357
3358         while (tx_left > 0) {
3359                 unsigned int entry = dirty_tx % NUM_TX_DESC;
3360                 struct ring_info *tx_skb = tp->tx_skb + entry;
3361                 u32 len = tx_skb->len;
3362                 u32 status;
3363
3364                 rmb();
3365                 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
3366                 if (status & DescOwn)
3367                         break;
3368
3369                 dev->stats.tx_bytes += len;
3370                 dev->stats.tx_packets++;
3371
3372                 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb, tp->TxDescArray + entry);
3373
3374                 if (status & LastFrag) {
3375                         dev_kfree_skb_irq(tx_skb->skb);
3376                         tx_skb->skb = NULL;
3377                 }
3378                 dirty_tx++;
3379                 tx_left--;
3380         }
3381
3382         if (tp->dirty_tx != dirty_tx) {
3383                 tp->dirty_tx = dirty_tx;
3384                 smp_wmb();
3385                 if (netif_queue_stopped(dev) &&
3386                     (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
3387                         netif_wake_queue(dev);
3388                 }
3389                 /*
3390                  * 8168 hack: TxPoll requests are lost when the Tx packets are
3391                  * too close. Let's kick an extra TxPoll request when a burst
3392                  * of start_xmit activity is detected (if it is not detected,
3393                  * it is slow enough). -- FR
3394                  */
3395                 smp_rmb();
3396                 if (tp->cur_tx != dirty_tx)
3397                         RTL_W8(TxPoll, NPQ);
3398         }
3399 }
3400
3401 static inline int rtl8169_fragmented_frame(u32 status)
3402 {
3403         return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
3404 }
3405
3406 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
3407 {
3408         u32 opts1 = le32_to_cpu(desc->opts1);
3409         u32 status = opts1 & RxProtoMask;
3410
3411         if (((status == RxProtoTCP) && !(opts1 & TCPFail)) ||
3412             ((status == RxProtoUDP) && !(opts1 & UDPFail)) ||
3413             ((status == RxProtoIP) && !(opts1 & IPFail)))
3414                 skb->ip_summed = CHECKSUM_UNNECESSARY;
3415         else
3416                 skb->ip_summed = CHECKSUM_NONE;
3417 }
3418
3419 static inline bool rtl8169_try_rx_copy(struct sk_buff **sk_buff,
3420                                        struct rtl8169_private *tp, int pkt_size,
3421                                        dma_addr_t addr)
3422 {
3423         struct sk_buff *skb;
3424         bool done = false;
3425
3426         if (pkt_size >= rx_copybreak)
3427                 goto out;
3428
3429         skb = netdev_alloc_skb(tp->dev, pkt_size + NET_IP_ALIGN);
3430         if (!skb)
3431                 goto out;
3432
3433         pci_dma_sync_single_for_cpu(tp->pci_dev, addr, pkt_size,
3434                                     PCI_DMA_FROMDEVICE);
3435         skb_reserve(skb, NET_IP_ALIGN);
3436         skb_copy_from_linear_data(*sk_buff, skb->data, pkt_size);
3437         *sk_buff = skb;
3438         done = true;
3439 out:
3440         return done;
3441 }
3442
3443 static int rtl8169_rx_interrupt(struct net_device *dev,
3444                                 struct rtl8169_private *tp,
3445                                 void __iomem *ioaddr, u32 budget)
3446 {
3447         unsigned int cur_rx, rx_left;
3448         unsigned int delta, count;
3449
3450         cur_rx = tp->cur_rx;
3451         rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
3452         rx_left = min(rx_left, budget);
3453
3454         for (; rx_left > 0; rx_left--, cur_rx++) {
3455                 unsigned int entry = cur_rx % NUM_RX_DESC;
3456                 struct RxDesc *desc = tp->RxDescArray + entry;
3457                 u32 status;
3458
3459                 rmb();
3460                 status = le32_to_cpu(desc->opts1);
3461
3462                 if (status & DescOwn)
3463                         break;
3464                 if (unlikely(status & RxRES)) {
3465                         if (netif_msg_rx_err(tp)) {
3466                                 printk(KERN_INFO
3467                                        "%s: Rx ERROR. status = %08x\n",
3468                                        dev->name, status);
3469                         }
3470                         dev->stats.rx_errors++;
3471                         if (status & (RxRWT | RxRUNT))
3472                                 dev->stats.rx_length_errors++;
3473                         if (status & RxCRC)
3474                                 dev->stats.rx_crc_errors++;
3475                         if (status & RxFOVF) {
3476                                 rtl8169_schedule_work(dev, rtl8169_reset_task);
3477                                 dev->stats.rx_fifo_errors++;
3478                         }
3479                         rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3480                 } else {
3481                         struct sk_buff *skb = tp->Rx_skbuff[entry];
3482                         dma_addr_t addr = le64_to_cpu(desc->addr);
3483                         int pkt_size = (status & 0x00001FFF) - 4;
3484                         struct pci_dev *pdev = tp->pci_dev;
3485
3486                         /*
3487                          * The driver does not support incoming fragmented
3488                          * frames. They are seen as a symptom of over-mtu
3489                          * sized frames.
3490                          */
3491                         if (unlikely(rtl8169_fragmented_frame(status))) {
3492                                 dev->stats.rx_dropped++;
3493                                 dev->stats.rx_length_errors++;
3494                                 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3495                                 continue;
3496                         }
3497
3498                         rtl8169_rx_csum(skb, desc);
3499
3500                         if (rtl8169_try_rx_copy(&skb, tp, pkt_size, addr)) {
3501                                 pci_dma_sync_single_for_device(pdev, addr,
3502                                         pkt_size, PCI_DMA_FROMDEVICE);
3503                                 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3504                         } else {
3505                                 pci_unmap_single(pdev, addr, tp->rx_buf_sz,
3506                                                  PCI_DMA_FROMDEVICE);
3507                                 tp->Rx_skbuff[entry] = NULL;
3508                         }
3509
3510                         skb_put(skb, pkt_size);
3511                         skb->protocol = eth_type_trans(skb, dev);
3512
3513                         if (rtl8169_rx_vlan_skb(tp, desc, skb) < 0)
3514                                 netif_receive_skb(skb);
3515
3516                         dev->stats.rx_bytes += pkt_size;
3517                         dev->stats.rx_packets++;
3518                 }
3519
3520                 /* Work around for AMD plateform. */
3521                 if ((desc->opts2 & cpu_to_le32(0xfffe000)) &&
3522                     (tp->mac_version == RTL_GIGA_MAC_VER_05)) {
3523                         desc->opts2 = 0;
3524                         cur_rx++;
3525                 }
3526         }
3527
3528         count = cur_rx - tp->cur_rx;
3529         tp->cur_rx = cur_rx;
3530
3531         delta = rtl8169_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
3532         if (!delta && count && netif_msg_intr(tp))
3533                 printk(KERN_INFO "%s: no Rx buffer allocated\n", dev->name);
3534         tp->dirty_rx += delta;
3535
3536         /*
3537          * FIXME: until there is periodic timer to try and refill the ring,
3538          * a temporary shortage may definitely kill the Rx process.
3539          * - disable the asic to try and avoid an overflow and kick it again
3540          *   after refill ?
3541          * - how do others driver handle this condition (Uh oh...).
3542          */
3543         if ((tp->dirty_rx + NUM_RX_DESC == tp->cur_rx) && netif_msg_intr(tp))
3544                 printk(KERN_EMERG "%s: Rx buffers exhausted\n", dev->name);
3545
3546         return count;
3547 }
3548
3549 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
3550 {
3551         struct net_device *dev = dev_instance;
3552         struct rtl8169_private *tp = netdev_priv(dev);
3553         void __iomem *ioaddr = tp->mmio_addr;
3554         int handled = 0;
3555         int status;
3556
3557         /* loop handling interrupts until we have no new ones or
3558          * we hit a invalid/hotplug case.
3559          */
3560         status = RTL_R16(IntrStatus);
3561         while (status && status != 0xffff) {
3562                 handled = 1;
3563
3564                 /* Handle all of the error cases first. These will reset
3565                  * the chip, so just exit the loop.
3566                  */
3567                 if (unlikely(!netif_running(dev))) {
3568                         rtl8169_asic_down(ioaddr);
3569                         break;
3570                 }
3571
3572                 /* Work around for rx fifo overflow */
3573                 if (unlikely(status & RxFIFOOver) &&
3574                 (tp->mac_version == RTL_GIGA_MAC_VER_11)) {
3575                         netif_stop_queue(dev);
3576                         rtl8169_tx_timeout(dev);
3577                         break;
3578                 }
3579
3580                 if (unlikely(status & SYSErr)) {
3581                         rtl8169_pcierr_interrupt(dev);
3582                         break;
3583                 }
3584
3585                 if (status & LinkChg)
3586                         rtl8169_check_link_status(dev, tp, ioaddr);
3587
3588                 /* We need to see the lastest version of tp->intr_mask to
3589                  * avoid ignoring an MSI interrupt and having to wait for
3590                  * another event which may never come.
3591                  */
3592                 smp_rmb();
3593                 if (status & tp->intr_mask & tp->napi_event) {
3594                         RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event);
3595                         tp->intr_mask = ~tp->napi_event;
3596
3597                         if (likely(napi_schedule_prep(&tp->napi)))
3598                                 __napi_schedule(&tp->napi);
3599                         else if (netif_msg_intr(tp)) {
3600                                 printk(KERN_INFO "%s: interrupt %04x in poll\n",
3601                                 dev->name, status);
3602                         }
3603                 }
3604
3605                 /* We only get a new MSI interrupt when all active irq
3606                  * sources on the chip have been acknowledged. So, ack
3607                  * everything we've seen and check if new sources have become
3608                  * active to avoid blocking all interrupts from the chip.
3609                  */
3610                 RTL_W16(IntrStatus,
3611                         (status & RxFIFOOver) ? (status | RxOverflow) : status);
3612                 status = RTL_R16(IntrStatus);
3613         }
3614
3615         return IRQ_RETVAL(handled);
3616 }
3617
3618 static int rtl8169_poll(struct napi_struct *napi, int budget)
3619 {
3620         struct rtl8169_private *tp = container_of(napi, struct rtl8169_private, napi);
3621         struct net_device *dev = tp->dev;
3622         void __iomem *ioaddr = tp->mmio_addr;
3623         int work_done;
3624
3625         work_done = rtl8169_rx_interrupt(dev, tp, ioaddr, (u32) budget);
3626         rtl8169_tx_interrupt(dev, tp, ioaddr);
3627
3628         if (work_done < budget) {
3629                 napi_complete(napi);
3630
3631                 /* We need for force the visibility of tp->intr_mask
3632                  * for other CPUs, as we can loose an MSI interrupt
3633                  * and potentially wait for a retransmit timeout if we don't.
3634                  * The posted write to IntrMask is safe, as it will
3635                  * eventually make it to the chip and we won't loose anything
3636                  * until it does.
3637                  */
3638                 tp->intr_mask = 0xffff;
3639                 smp_wmb();
3640                 RTL_W16(IntrMask, tp->intr_event);
3641         }
3642
3643         return work_done;
3644 }
3645
3646 static void rtl8169_rx_missed(struct net_device *dev, void __iomem *ioaddr)
3647 {
3648         struct rtl8169_private *tp = netdev_priv(dev);
3649
3650         if (tp->mac_version > RTL_GIGA_MAC_VER_06)
3651                 return;
3652
3653         dev->stats.rx_missed_errors += (RTL_R32(RxMissed) & 0xffffff);
3654         RTL_W32(RxMissed, 0);
3655 }
3656
3657 static void rtl8169_down(struct net_device *dev)
3658 {
3659         struct rtl8169_private *tp = netdev_priv(dev);
3660         void __iomem *ioaddr = tp->mmio_addr;
3661         unsigned int intrmask;
3662
3663         rtl8169_delete_timer(dev);
3664
3665         netif_stop_queue(dev);
3666
3667         napi_disable(&tp->napi);
3668
3669 core_down:
3670         spin_lock_irq(&tp->lock);
3671
3672         rtl8169_asic_down(ioaddr);
3673
3674         rtl8169_rx_missed(dev, ioaddr);
3675
3676         spin_unlock_irq(&tp->lock);
3677
3678         synchronize_irq(dev->irq);
3679
3680         /* Give a racing hard_start_xmit a few cycles to complete. */
3681         synchronize_sched();  /* FIXME: should this be synchronize_irq()? */
3682
3683         /*
3684          * And now for the 50k$ question: are IRQ disabled or not ?
3685          *
3686          * Two paths lead here:
3687          * 1) dev->close
3688          *    -> netif_running() is available to sync the current code and the
3689          *       IRQ handler. See rtl8169_interrupt for details.
3690          * 2) dev->change_mtu
3691          *    -> rtl8169_poll can not be issued again and re-enable the
3692          *       interruptions. Let's simply issue the IRQ down sequence again.
3693          *
3694          * No loop if hotpluged or major error (0xffff).
3695          */
3696         intrmask = RTL_R16(IntrMask);
3697         if (intrmask && (intrmask != 0xffff))
3698                 goto core_down;
3699
3700         rtl8169_tx_clear(tp);
3701
3702         rtl8169_rx_clear(tp);
3703 }
3704
3705 static int rtl8169_close(struct net_device *dev)
3706 {
3707         struct rtl8169_private *tp = netdev_priv(dev);
3708         struct pci_dev *pdev = tp->pci_dev;
3709
3710         /* update counters before going down */
3711         rtl8169_update_counters(dev);
3712
3713         rtl8169_down(dev);
3714
3715         free_irq(dev->irq, dev);
3716
3717         pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
3718                             tp->RxPhyAddr);
3719         pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
3720                             tp->TxPhyAddr);
3721         tp->TxDescArray = NULL;
3722         tp->RxDescArray = NULL;
3723
3724         return 0;
3725 }
3726
3727 static void rtl_set_rx_mode(struct net_device *dev)
3728 {
3729         struct rtl8169_private *tp = netdev_priv(dev);
3730         void __iomem *ioaddr = tp->mmio_addr;
3731         unsigned long flags;
3732         u32 mc_filter[2];       /* Multicast hash filter */
3733         int rx_mode;
3734         u32 tmp = 0;
3735
3736         if (dev->flags & IFF_PROMISC) {
3737                 /* Unconditionally log net taps. */
3738                 if (netif_msg_link(tp)) {
3739                         printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
3740                                dev->name);
3741                 }
3742                 rx_mode =
3743                     AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
3744                     AcceptAllPhys;
3745                 mc_filter[1] = mc_filter[0] = 0xffffffff;
3746         } else if ((dev->mc_count > multicast_filter_limit)
3747                    || (dev->flags & IFF_ALLMULTI)) {
3748                 /* Too many to filter perfectly -- accept all multicasts. */
3749                 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
3750                 mc_filter[1] = mc_filter[0] = 0xffffffff;
3751         } else {
3752                 struct dev_mc_list *mclist;
3753                 unsigned int i;
3754
3755                 rx_mode = AcceptBroadcast | AcceptMyPhys;
3756                 mc_filter[1] = mc_filter[0] = 0;
3757                 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
3758                      i++, mclist = mclist->next) {
3759                         int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
3760                         mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
3761                         rx_mode |= AcceptMulticast;
3762                 }
3763         }
3764
3765         spin_lock_irqsave(&tp->lock, flags);
3766
3767         tmp = rtl8169_rx_config | rx_mode |
3768               (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
3769
3770         if (tp->mac_version > RTL_GIGA_MAC_VER_06) {
3771                 u32 data = mc_filter[0];
3772
3773                 mc_filter[0] = swab32(mc_filter[1]);
3774                 mc_filter[1] = swab32(data);
3775         }
3776
3777         RTL_W32(MAR0 + 0, mc_filter[0]);
3778         RTL_W32(MAR0 + 4, mc_filter[1]);
3779
3780         RTL_W32(RxConfig, tmp);
3781
3782         spin_unlock_irqrestore(&tp->lock, flags);
3783 }
3784
3785 /**
3786  *  rtl8169_get_stats - Get rtl8169 read/write statistics
3787  *  @dev: The Ethernet Device to get statistics for
3788  *
3789  *  Get TX/RX statistics for rtl8169
3790  */
3791 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
3792 {
3793         struct rtl8169_private *tp = netdev_priv(dev);
3794         void __iomem *ioaddr = tp->mmio_addr;
3795         unsigned long flags;
3796
3797         if (netif_running(dev)) {
3798                 spin_lock_irqsave(&tp->lock, flags);
3799                 rtl8169_rx_missed(dev, ioaddr);
3800                 spin_unlock_irqrestore(&tp->lock, flags);
3801         }
3802
3803         return &dev->stats;
3804 }
3805
3806 #ifdef CONFIG_PM
3807
3808 static int rtl8169_suspend(struct pci_dev *pdev, pm_message_t state)
3809 {
3810         struct net_device *dev = pci_get_drvdata(pdev);
3811         struct rtl8169_private *tp = netdev_priv(dev);
3812         void __iomem *ioaddr = tp->mmio_addr;
3813
3814         if (!netif_running(dev))
3815                 goto out_pci_suspend;
3816
3817         netif_device_detach(dev);
3818         netif_stop_queue(dev);
3819
3820         spin_lock_irq(&tp->lock);
3821
3822         rtl8169_asic_down(ioaddr);
3823
3824         rtl8169_rx_missed(dev, ioaddr);
3825
3826         spin_unlock_irq(&tp->lock);
3827
3828 out_pci_suspend:
3829         pci_save_state(pdev);
3830         pci_enable_wake(pdev, pci_choose_state(pdev, state),
3831                 (tp->features & RTL_FEATURE_WOL) ? 1 : 0);
3832         pci_set_power_state(pdev, pci_choose_state(pdev, state));
3833
3834         return 0;
3835 }
3836
3837 static int rtl8169_resume(struct pci_dev *pdev)
3838 {
3839         struct net_device *dev = pci_get_drvdata(pdev);
3840
3841         pci_set_power_state(pdev, PCI_D0);
3842         pci_restore_state(pdev);
3843         pci_enable_wake(pdev, PCI_D0, 0);
3844
3845         if (!netif_running(dev))
3846                 goto out;
3847
3848         netif_device_attach(dev);
3849
3850         rtl8169_schedule_work(dev, rtl8169_reset_task);
3851 out:
3852         return 0;
3853 }
3854
3855 static void rtl_shutdown(struct pci_dev *pdev)
3856 {
3857         rtl8169_suspend(pdev, PMSG_SUSPEND);
3858 }
3859
3860 #endif /* CONFIG_PM */
3861
3862 static struct pci_driver rtl8169_pci_driver = {
3863         .name           = MODULENAME,
3864         .id_table       = rtl8169_pci_tbl,
3865         .probe          = rtl8169_init_one,
3866         .remove         = __devexit_p(rtl8169_remove_one),
3867 #ifdef CONFIG_PM
3868         .suspend        = rtl8169_suspend,
3869         .resume         = rtl8169_resume,
3870         .shutdown       = rtl_shutdown,
3871 #endif
3872 };
3873
3874 static int __init rtl8169_init_module(void)
3875 {
3876         return pci_register_driver(&rtl8169_pci_driver);
3877 }
3878
3879 static void __exit rtl8169_cleanup_module(void)
3880 {
3881         pci_unregister_driver(&rtl8169_pci_driver);
3882 }
3883
3884 module_init(rtl8169_init_module);
3885 module_exit(rtl8169_cleanup_module);