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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 /* write/read MMIO register */
  85 #define RTL_W8(reg, val8)       writeb ((val8), ioaddr + (reg))
  86 #define RTL_W16(reg, val16)     writew ((val16), ioaddr + (reg))
  87 #define RTL_W32(reg, val32)     writel ((val32), ioaddr + (reg))
  88 #define RTL_R8(reg)             readb (ioaddr + (reg))
  89 #define RTL_R16(reg)            readw (ioaddr + (reg))
  90 #define RTL_R32(reg)            ((unsigned long) readl (ioaddr + (reg)))
  91
  92 enum mac_version {
  93         RTL_GIGA_MAC_VER_01 = 0x01, // 8169
  94         RTL_GIGA_MAC_VER_02 = 0x02, // 8169S
  95         RTL_GIGA_MAC_VER_03 = 0x03, // 8110S
  96         RTL_GIGA_MAC_VER_04 = 0x04, // 8169SB
  97         RTL_GIGA_MAC_VER_05 = 0x05, // 8110SCd
  98         RTL_GIGA_MAC_VER_06 = 0x06, // 8110SCe
  99         RTL_GIGA_MAC_VER_07 = 0x07, // 8102e
 100         RTL_GIGA_MAC_VER_08 = 0x08, // 8102e
 101         RTL_GIGA_MAC_VER_09 = 0x09, // 8102e
 102         RTL_GIGA_MAC_VER_10 = 0x0a, // 8101e
 103         RTL_GIGA_MAC_VER_11 = 0x0b, // 8168Bb
 104         RTL_GIGA_MAC_VER_12 = 0x0c, // 8168Be
 105         RTL_GIGA_MAC_VER_13 = 0x0d, // 8101Eb
 106         RTL_GIGA_MAC_VER_14 = 0x0e, // 8101 ?
 107         RTL_GIGA_MAC_VER_15 = 0x0f, // 8101 ?
 108         RTL_GIGA_MAC_VER_16 = 0x11, // 8101Ec
 109         RTL_GIGA_MAC_VER_17 = 0x10, // 8168Bf
 110         RTL_GIGA_MAC_VER_18 = 0x12, // 8168CP
 111         RTL_GIGA_MAC_VER_19 = 0x13, // 8168C
 112         RTL_GIGA_MAC_VER_20 = 0x14  // 8168C
 113 };
 114
 115 #define _R(NAME,MAC,MASK) \
 116         { .name = NAME, .mac_version = MAC, .RxConfigMask = MASK }
 117
 118 static const struct {
 119         const char *name;
 120         u8 mac_version;
 121         u32 RxConfigMask;       /* Clears the bits supported by this chip */
 122 } rtl_chip_info[] = {
 123         _R("RTL8169",           RTL_GIGA_MAC_VER_01, 0xff7e1880), // 8169
 124         _R("RTL8169s",          RTL_GIGA_MAC_VER_02, 0xff7e1880), // 8169S
 125         _R("RTL8110s",          RTL_GIGA_MAC_VER_03, 0xff7e1880), // 8110S
 126         _R("RTL8169sb/8110sb",  RTL_GIGA_MAC_VER_04, 0xff7e1880), // 8169SB
 127         _R("RTL8169sc/8110sc",  RTL_GIGA_MAC_VER_05, 0xff7e1880), // 8110SCd
 128         _R("RTL8169sc/8110sc",  RTL_GIGA_MAC_VER_06, 0xff7e1880), // 8110SCe
 129         _R("RTL8102e",          RTL_GIGA_MAC_VER_07, 0xff7e1880), // PCI-E
 130         _R("RTL8102e",          RTL_GIGA_MAC_VER_08, 0xff7e1880), // PCI-E
 131         _R("RTL8102e",          RTL_GIGA_MAC_VER_09, 0xff7e1880), // PCI-E
 132         _R("RTL8101e",          RTL_GIGA_MAC_VER_10, 0xff7e1880), // PCI-E
 133         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_11, 0xff7e1880), // PCI-E
 134         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_12, 0xff7e1880), // PCI-E
 135         _R("RTL8101e",          RTL_GIGA_MAC_VER_13, 0xff7e1880), // PCI-E 8139
 136         _R("RTL8100e",          RTL_GIGA_MAC_VER_14, 0xff7e1880), // PCI-E 8139
 137         _R("RTL8100e",          RTL_GIGA_MAC_VER_15, 0xff7e1880), // PCI-E 8139
 138         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_17, 0xff7e1880), // PCI-E
 139         _R("RTL8101e",          RTL_GIGA_MAC_VER_16, 0xff7e1880), // PCI-E
 140         _R("RTL8168cp/8111cp",  RTL_GIGA_MAC_VER_18, 0xff7e1880), // PCI-E
 141         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_19, 0xff7e1880), // PCI-E
 142         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_20, 0xff7e1880)  // PCI-E
 143 };
 144 #undef _R
 145
 146 enum cfg_version {
 147         RTL_CFG_0 = 0x00,
 148         RTL_CFG_1,
 149         RTL_CFG_2
 150 };
 151
 152 static void rtl_hw_start_8169(struct net_device *);
 153 static void rtl_hw_start_8168(struct net_device *);
 154 static void rtl_hw_start_8101(struct net_device *);
 155
 156 static struct pci_device_id rtl8169_pci_tbl[] = {
 157         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8129), 0, 0, RTL_CFG_0 },
 158         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8136), 0, 0, RTL_CFG_2 },
 159         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8167), 0, 0, RTL_CFG_0 },
 160         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8168), 0, 0, RTL_CFG_1 },
 161         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8169), 0, 0, RTL_CFG_0 },
 162         { PCI_DEVICE(PCI_VENDOR_ID_DLINK,       0x4300), 0, 0, RTL_CFG_0 },
 163         { PCI_DEVICE(PCI_VENDOR_ID_AT,          0xc107), 0, 0, RTL_CFG_0 },
 164         { PCI_DEVICE(0x16ec,                    0x0116), 0, 0, RTL_CFG_0 },
 165         { PCI_VENDOR_ID_LINKSYS,                0x1032,
 166                 PCI_ANY_ID, 0x0024, 0, 0, RTL_CFG_0 },
 167         { 0x0001,                               0x8168,
 168                 PCI_ANY_ID, 0x2410, 0, 0, RTL_CFG_2 },
 169         {0,},
 170 };
 171
 172 MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);
 173
 174 static int rx_copybreak = 200;
 175 static int use_dac;
 176 static struct {
 177         u32 msg_enable;
 178 } debug = { -1 };
 179
 180 enum rtl_registers {
 181         MAC0            = 0,    /* Ethernet hardware address. */
 182         MAC4            = 4,
 183         MAR0            = 8,    /* Multicast filter. */
 184         CounterAddrLow          = 0x10,
 185         CounterAddrHigh         = 0x14,
 186         TxDescStartAddrLow      = 0x20,
 187         TxDescStartAddrHigh     = 0x24,
 188         TxHDescStartAddrLow     = 0x28,
 189         TxHDescStartAddrHigh    = 0x2c,
 190         FLASH           = 0x30,
 191         ERSR            = 0x36,
 192         ChipCmd         = 0x37,
 193         TxPoll          = 0x38,
 194         IntrMask        = 0x3c,
 195         IntrStatus      = 0x3e,
 196         TxConfig        = 0x40,
 197         RxConfig        = 0x44,
 198         RxMissed        = 0x4c,
 199         Cfg9346         = 0x50,
 200         Config0         = 0x51,
 201         Config1         = 0x52,
 202         Config2         = 0x53,
 203         Config3         = 0x54,
 204         Config4         = 0x55,
 205         Config5         = 0x56,
 206         MultiIntr       = 0x5c,
 207         PHYAR           = 0x60,
 208         PHYstatus       = 0x6c,
 209         RxMaxSize       = 0xda,
 210         CPlusCmd        = 0xe0,
 211         IntrMitigate    = 0xe2,
 212         RxDescAddrLow   = 0xe4,
 213         RxDescAddrHigh  = 0xe8,
 214         EarlyTxThres    = 0xec,
 215         FuncEvent       = 0xf0,
 216         FuncEventMask   = 0xf4,
 217         FuncPresetState = 0xf8,
 218         FuncForceEvent  = 0xfc,
 219 };
 220
 221 enum rtl8110_registers {
 222         TBICSR                  = 0x64,
 223         TBI_ANAR                = 0x68,
 224         TBI_LPAR                = 0x6a,
 225 };
 226
 227 enum rtl8168_8101_registers {
 228         CSIDR                   = 0x64,
 229         CSIAR                   = 0x68,
 230 #define CSIAR_FLAG                      0x80000000
 231 #define CSIAR_WRITE_CMD                 0x80000000
 232 #define CSIAR_BYTE_ENABLE               0x0f
 233 #define CSIAR_BYTE_ENABLE_SHIFT         12
 234 #define CSIAR_ADDR_MASK                 0x0fff
 235
 236         EPHYAR                  = 0x80,
 237 #define EPHYAR_FLAG                     0x80000000
 238 #define EPHYAR_WRITE_CMD                0x80000000
 239 #define EPHYAR_REG_MASK                 0x1f
 240 #define EPHYAR_REG_SHIFT                16
 241 #define EPHYAR_DATA_MASK                0xffff
 242         DBG_REG                 = 0xd1,
 243 #define FIX_NAK_1                       (1 << 4)
 244 #define FIX_NAK_2                       (1 << 3)
 245 };
 246
 247 enum rtl_register_content {
 248         /* InterruptStatusBits */
 249         SYSErr          = 0x8000,
 250         PCSTimeout      = 0x4000,
 251         SWInt           = 0x0100,
 252         TxDescUnavail   = 0x0080,
 253         RxFIFOOver      = 0x0040,
 254         LinkChg         = 0x0020,
 255         RxOverflow      = 0x0010,
 256         TxErr           = 0x0008,
 257         TxOK            = 0x0004,
 258         RxErr           = 0x0002,
 259         RxOK            = 0x0001,
 260
 261         /* RxStatusDesc */
 262         RxFOVF  = (1 << 23),
 263         RxRWT   = (1 << 22),
 264         RxRES   = (1 << 21),
 265         RxRUNT  = (1 << 20),
 266         RxCRC   = (1 << 19),
 267
 268         /* ChipCmdBits */
 269         CmdReset        = 0x10,
 270         CmdRxEnb        = 0x08,
 271         CmdTxEnb        = 0x04,
 272         RxBufEmpty      = 0x01,
 273
 274         /* TXPoll register p.5 */
 275         HPQ             = 0x80,         /* Poll cmd on the high prio queue */
 276         NPQ             = 0x40,         /* Poll cmd on the low prio queue */
 277         FSWInt          = 0x01,         /* Forced software interrupt */
 278
 279         /* Cfg9346Bits */
 280         Cfg9346_Lock    = 0x00,
 281         Cfg9346_Unlock  = 0xc0,
 282
 283         /* rx_mode_bits */
 284         AcceptErr       = 0x20,
 285         AcceptRunt      = 0x10,
 286         AcceptBroadcast = 0x08,
 287         AcceptMulticast = 0x04,
 288         AcceptMyPhys    = 0x02,
 289         AcceptAllPhys   = 0x01,
 290
 291         /* RxConfigBits */
 292         RxCfgFIFOShift  = 13,
 293         RxCfgDMAShift   =  8,
 294
 295         /* TxConfigBits */
 296         TxInterFrameGapShift = 24,
 297         TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
 298
 299         /* Config1 register p.24 */
 300         LEDS1           = (1 << 7),
 301         LEDS0           = (1 << 6),
 302         MSIEnable       = (1 << 5),     /* Enable Message Signaled Interrupt */
 303         Speed_down      = (1 << 4),
 304         MEMMAP          = (1 << 3),
 305         IOMAP           = (1 << 2),
 306         VPD             = (1 << 1),
 307         PMEnable        = (1 << 0),     /* Power Management Enable */
 308
 309         /* Config2 register p. 25 */
 310         PCI_Clock_66MHz = 0x01,
 311         PCI_Clock_33MHz = 0x00,
 312
 313         /* Config3 register p.25 */
 314         MagicPacket     = (1 << 5),     /* Wake up when receives a Magic Packet */
 315         LinkUp          = (1 << 4),     /* Wake up when the cable connection is re-established */
 316         Beacon_en       = (1 << 0),     /* 8168 only. Reserved in the 8168b */
 317
 318         /* Config5 register p.27 */
 319         BWF             = (1 << 6),     /* Accept Broadcast wakeup frame */
 320         MWF             = (1 << 5),     /* Accept Multicast wakeup frame */
 321         UWF             = (1 << 4),     /* Accept Unicast wakeup frame */
 322         LanWake         = (1 << 1),     /* LanWake enable/disable */
 323         PMEStatus       = (1 << 0),     /* PME status can be reset by PCI RST# */
 324
 325         /* TBICSR p.28 */
 326         TBIReset        = 0x80000000,
 327         TBILoopback     = 0x40000000,
 328         TBINwEnable     = 0x20000000,
 329         TBINwRestart    = 0x10000000,
 330         TBILinkOk       = 0x02000000,
 331         TBINwComplete   = 0x01000000,
 332
 333         /* CPlusCmd p.31 */
 334         EnableBist      = (1 << 15),    // 8168 8101
 335         Mac_dbgo_oe     = (1 << 14),    // 8168 8101
 336         Normal_mode     = (1 << 13),    // unused
 337         Force_half_dup  = (1 << 12),    // 8168 8101
 338         Force_rxflow_en = (1 << 11),    // 8168 8101
 339         Force_txflow_en = (1 << 10),    // 8168 8101
 340         Cxpl_dbg_sel    = (1 << 9),     // 8168 8101
 341         ASF             = (1 << 8),     // 8168 8101
 342         PktCntrDisable  = (1 << 7),     // 8168 8101
 343         Mac_dbgo_sel    = 0x001c,       // 8168
 344         RxVlan          = (1 << 6),
 345         RxChkSum        = (1 << 5),
 346         PCIDAC          = (1 << 4),
 347         PCIMulRW        = (1 << 3),
 348         INTT_0          = 0x0000,       // 8168
 349         INTT_1          = 0x0001,       // 8168
 350         INTT_2          = 0x0002,       // 8168
 351         INTT_3          = 0x0003,       // 8168
 352
 353         /* rtl8169_PHYstatus */
 354         TBI_Enable      = 0x80,
 355         TxFlowCtrl      = 0x40,
 356         RxFlowCtrl      = 0x20,
 357         _1000bpsF       = 0x10,
 358         _100bps         = 0x08,
 359         _10bps          = 0x04,
 360         LinkStatus      = 0x02,
 361         FullDup         = 0x01,
 362
 363         /* _TBICSRBit */
 364         TBILinkOK       = 0x02000000,
 365
 366         /* DumpCounterCommand */
 367         CounterDump     = 0x8,
 368 };
 369
 370 enum desc_status_bit {
 371         DescOwn         = (1 << 31), /* Descriptor is owned by NIC */
 372         RingEnd         = (1 << 30), /* End of descriptor ring */
 373         FirstFrag       = (1 << 29), /* First segment of a packet */
 374         LastFrag        = (1 << 28), /* Final segment of a packet */
 375
 376         /* Tx private */
 377         LargeSend       = (1 << 27), /* TCP Large Send Offload (TSO) */
 378         MSSShift        = 16,        /* MSS value position */
 379         MSSMask         = 0xfff,     /* MSS value + LargeSend bit: 12 bits */
 380         IPCS            = (1 << 18), /* Calculate IP checksum */
 381         UDPCS           = (1 << 17), /* Calculate UDP/IP checksum */
 382         TCPCS           = (1 << 16), /* Calculate TCP/IP checksum */
 383         TxVlanTag       = (1 << 17), /* Add VLAN tag */
 384
 385         /* Rx private */
 386         PID1            = (1 << 18), /* Protocol ID bit 1/2 */
 387         PID0            = (1 << 17), /* Protocol ID bit 2/2 */
 388
 389 #define RxProtoUDP      (PID1)
 390 #define RxProtoTCP      (PID0)
 391 #define RxProtoIP       (PID1 | PID0)
 392 #define RxProtoMask     RxProtoIP
 393
 394         IPFail          = (1 << 16), /* IP checksum failed */
 395         UDPFail         = (1 << 15), /* UDP/IP checksum failed */
 396         TCPFail         = (1 << 14), /* TCP/IP checksum failed */
 397         RxVlanTag       = (1 << 16), /* VLAN tag available */
 398 };
 399
 400 #define RsvdMask        0x3fffc000
 401
 402 struct TxDesc {
 403         __le32 opts1;
 404         __le32 opts2;
 405         __le64 addr;
 406 };
 407
 408 struct RxDesc {
 409         __le32 opts1;
 410         __le32 opts2;
 411         __le64 addr;
 412 };
 413
 414 struct ring_info {
 415         struct sk_buff  *skb;
 416         u32             len;
 417         u8              __pad[sizeof(void *) - sizeof(u32)];
 418 };
 419
 420 enum features {
 421         RTL_FEATURE_WOL         = (1 << 0),
 422         RTL_FEATURE_MSI         = (1 << 1),
 423         RTL_FEATURE_GMII        = (1 << 2),
 424 };
 425
 426 struct rtl8169_private {
 427         void __iomem *mmio_addr;        /* memory map physical address */
 428         struct pci_dev *pci_dev;        /* Index of PCI device */
 429         struct net_device *dev;
 430         struct napi_struct napi;
 431         spinlock_t lock;                /* spin lock flag */
 432         u32 msg_enable;
 433         int chipset;
 434         int mac_version;
 435         u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
 436         u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
 437         u32 dirty_rx;
 438         u32 dirty_tx;
 439         struct TxDesc *TxDescArray;     /* 256-aligned Tx descriptor ring */
 440         struct RxDesc *RxDescArray;     /* 256-aligned Rx descriptor ring */
 441         dma_addr_t TxPhyAddr;
 442         dma_addr_t RxPhyAddr;
 443         struct sk_buff *Rx_skbuff[NUM_RX_DESC]; /* Rx data buffers */
 444         struct ring_info tx_skb[NUM_TX_DESC];   /* Tx data buffers */
 445         unsigned align;
 446         unsigned rx_buf_sz;
 447         struct timer_list timer;
 448         u16 cp_cmd;
 449         u16 intr_event;
 450         u16 napi_event;
 451         u16 intr_mask;
 452         int phy_auto_nego_reg;
 453         int phy_1000_ctrl_reg;
 454 #ifdef CONFIG_R8169_VLAN
 455         struct vlan_group *vlgrp;
 456 #endif
 457         int (*set_speed)(struct net_device *, u8 autoneg, u16 speed, u8 duplex);
 458         int (*get_settings)(struct net_device *, struct ethtool_cmd *);
 459         void (*phy_reset_enable)(void __iomem *);
 460         void (*hw_start)(struct net_device *);
 461         unsigned int (*phy_reset_pending)(void __iomem *);
 462         unsigned int (*link_ok)(void __iomem *);
 463         int pcie_cap;
 464         struct delayed_work task;
 465         unsigned features;
 466
 467         struct mii_if_info mii;
 468 };
 469
 470 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
 471 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
 472 module_param(rx_copybreak, int, 0);
 473 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
 474 module_param(use_dac, int, 0);
 475 MODULE_PARM_DESC(use_dac, "Enable PCI DAC. Unsafe on 32 bit PCI slot.");
 476 module_param_named(debug, debug.msg_enable, int, 0);
 477 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
 478 MODULE_LICENSE("GPL");
 479 MODULE_VERSION(RTL8169_VERSION);
 480
 481 static int rtl8169_open(struct net_device *dev);
 482 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev);
 483 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance);
 484 static int rtl8169_init_ring(struct net_device *dev);
 485 static void rtl_hw_start(struct net_device *dev);
 486 static int rtl8169_close(struct net_device *dev);
 487 static void rtl_set_rx_mode(struct net_device *dev);
 488 static void rtl8169_tx_timeout(struct net_device *dev);
 489 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
 490 static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
 491                                 void __iomem *, u32 budget);
 492 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
 493 static void rtl8169_down(struct net_device *dev);
 494 static void rtl8169_rx_clear(struct rtl8169_private *tp);
 495 static int rtl8169_poll(struct napi_struct *napi, int budget);
 496
 497 static const unsigned int rtl8169_rx_config =
 498         (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
 499
 500 static void mdio_write(void __iomem *ioaddr, int reg_addr, int value)
 501 {
 502         int i;
 503
 504         RTL_W32(PHYAR, 0x80000000 | (reg_addr & 0x1f) << 16 | (value & 0xffff));
 505
 506         for (i = 20; i > 0; i--) {
 507                 /*
 508                  * Check if the RTL8169 has completed writing to the specified
 509                  * MII register.
 510                  */
 511                 if (!(RTL_R32(PHYAR) & 0x80000000))
 512                         break;
 513                 udelay(25);
 514         }
 515 }
 516
 517 static int mdio_read(void __iomem *ioaddr, int reg_addr)
 518 {
 519         int i, value = -1;
 520
 521         RTL_W32(PHYAR, 0x0 | (reg_addr & 0x1f) << 16);
 522
 523         for (i = 20; i > 0; i--) {
 524                 /*
 525                  * Check if the RTL8169 has completed retrieving data from
 526                  * the specified MII register.
 527                  */
 528                 if (RTL_R32(PHYAR) & 0x80000000) {
 529                         value = RTL_R32(PHYAR) & 0xffff;
 530                         break;
 531                 }
 532                 udelay(25);
 533         }
 534         return value;
 535 }
 536
 537 static void mdio_patch(void __iomem *ioaddr, int reg_addr, int value)
 538 {
 539         mdio_write(ioaddr, reg_addr, mdio_read(ioaddr, reg_addr) | value);
 540 }
 541
 542 static void rtl_mdio_write(struct net_device *dev, int phy_id, int location,
 543                            int val)
 544 {
 545         struct rtl8169_private *tp = netdev_priv(dev);
 546         void __iomem *ioaddr = tp->mmio_addr;
 547
 548         mdio_write(ioaddr, location, val);
 549 }
 550
 551 static int rtl_mdio_read(struct net_device *dev, int phy_id, int location)
 552 {
 553         struct rtl8169_private *tp = netdev_priv(dev);
 554         void __iomem *ioaddr = tp->mmio_addr;
 555
 556         return mdio_read(ioaddr, location);
 557 }
 558
 559 static void rtl_ephy_write(void __iomem *ioaddr, int reg_addr, int value)
 560 {
 561         unsigned int i;
 562
 563         RTL_W32(EPHYAR, EPHYAR_WRITE_CMD | (value & EPHYAR_DATA_MASK) |
 564                 (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
 565
 566         for (i = 0; i < 100; i++) {
 567                 if (!(RTL_R32(EPHYAR) & EPHYAR_FLAG))
 568                         break;
 569                 udelay(10);
 570         }
 571 }
 572
 573 static u16 rtl_ephy_read(void __iomem *ioaddr, int reg_addr)
 574 {
 575         u16 value = 0xffff;
 576         unsigned int i;
 577
 578         RTL_W32(EPHYAR, (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
 579
 580         for (i = 0; i < 100; i++) {
 581                 if (RTL_R32(EPHYAR) & EPHYAR_FLAG) {
 582                         value = RTL_R32(EPHYAR) & EPHYAR_DATA_MASK;
 583                         break;
 584                 }
 585                 udelay(10);
 586         }
 587
 588         return value;
 589 }
 590
 591 static void rtl_csi_write(void __iomem *ioaddr, int addr, int value)
 592 {
 593         unsigned int i;
 594
 595         RTL_W32(CSIDR, value);
 596         RTL_W32(CSIAR, CSIAR_WRITE_CMD | (addr & CSIAR_ADDR_MASK) |
 597                 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
 598
 599         for (i = 0; i < 100; i++) {
 600                 if (!(RTL_R32(CSIAR) & CSIAR_FLAG))
 601                         break;
 602                 udelay(10);
 603         }
 604 }
 605
 606 static u32 rtl_csi_read(void __iomem *ioaddr, int addr)
 607 {
 608         u32 value = ~0x00;
 609         unsigned int i;
 610
 611         RTL_W32(CSIAR, (addr & CSIAR_ADDR_MASK) |
 612                 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
 613
 614         for (i = 0; i < 100; i++) {
 615                 if (RTL_R32(CSIAR) & CSIAR_FLAG) {
 616                         value = RTL_R32(CSIDR);
 617                         break;
 618                 }
 619                 udelay(10);
 620         }
 621
 622         return value;
 623 }
 624
 625 static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
 626 {
 627         RTL_W16(IntrMask, 0x0000);
 628
 629         RTL_W16(IntrStatus, 0xffff);
 630 }
 631
 632 static void rtl8169_asic_down(void __iomem *ioaddr)
 633 {
 634         RTL_W8(ChipCmd, 0x00);
 635         rtl8169_irq_mask_and_ack(ioaddr);
 636         RTL_R16(CPlusCmd);
 637 }
 638
 639 static unsigned int rtl8169_tbi_reset_pending(void __iomem *ioaddr)
 640 {
 641         return RTL_R32(TBICSR) & TBIReset;
 642 }
 643
 644 static unsigned int rtl8169_xmii_reset_pending(void __iomem *ioaddr)
 645 {
 646         return mdio_read(ioaddr, MII_BMCR) & BMCR_RESET;
 647 }
 648
 649 static unsigned int rtl8169_tbi_link_ok(void __iomem *ioaddr)
 650 {
 651         return RTL_R32(TBICSR) & TBILinkOk;
 652 }
 653
 654 static unsigned int rtl8169_xmii_link_ok(void __iomem *ioaddr)
 655 {
 656         return RTL_R8(PHYstatus) & LinkStatus;
 657 }
 658
 659 static void rtl8169_tbi_reset_enable(void __iomem *ioaddr)
 660 {
 661         RTL_W32(TBICSR, RTL_R32(TBICSR) | TBIReset);
 662 }
 663
 664 static void rtl8169_xmii_reset_enable(void __iomem *ioaddr)
 665 {
 666         unsigned int val;
 667
 668         val = mdio_read(ioaddr, MII_BMCR) | BMCR_RESET;
 669         mdio_write(ioaddr, MII_BMCR, val & 0xffff);
 670 }
 671
 672 static void rtl8169_check_link_status(struct net_device *dev,
 673                                       struct rtl8169_private *tp,
 674                                       void __iomem *ioaddr)
 675 {
 676         unsigned long flags;
 677
 678         spin_lock_irqsave(&tp->lock, flags);
 679         if (tp->link_ok(ioaddr)) {
 680                 netif_carrier_on(dev);
 681                 if (netif_msg_ifup(tp))
 682                         printk(KERN_INFO PFX "%s: link up\n", dev->name);
 683         } else {
 684                 if (netif_msg_ifdown(tp))
 685                         printk(KERN_INFO PFX "%s: link down\n", dev->name);
 686                 netif_carrier_off(dev);
 687         }
 688         spin_unlock_irqrestore(&tp->lock, flags);
 689 }
 690
 691 static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 692 {
 693         struct rtl8169_private *tp = netdev_priv(dev);
 694         void __iomem *ioaddr = tp->mmio_addr;
 695         u8 options;
 696
 697         wol->wolopts = 0;
 698
 699 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
 700         wol->supported = WAKE_ANY;
 701
 702         spin_lock_irq(&tp->lock);
 703
 704         options = RTL_R8(Config1);
 705         if (!(options & PMEnable))
 706                 goto out_unlock;
 707
 708         options = RTL_R8(Config3);
 709         if (options & LinkUp)
 710                 wol->wolopts |= WAKE_PHY;
 711         if (options & MagicPacket)
 712                 wol->wolopts |= WAKE_MAGIC;
 713
 714         options = RTL_R8(Config5);
 715         if (options & UWF)
 716                 wol->wolopts |= WAKE_UCAST;
 717         if (options & BWF)
 718                 wol->wolopts |= WAKE_BCAST;
 719         if (options & MWF)
 720                 wol->wolopts |= WAKE_MCAST;
 721
 722 out_unlock:
 723         spin_unlock_irq(&tp->lock);
 724 }
 725
 726 static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 727 {
 728         struct rtl8169_private *tp = netdev_priv(dev);
 729         void __iomem *ioaddr = tp->mmio_addr;
 730         unsigned int i;
 731         static struct {
 732                 u32 opt;
 733                 u16 reg;
 734                 u8  mask;
 735         } cfg[] = {
 736                 { WAKE_ANY,   Config1, PMEnable },
 737                 { WAKE_PHY,   Config3, LinkUp },
 738                 { WAKE_MAGIC, Config3, MagicPacket },
 739                 { WAKE_UCAST, Config5, UWF },
 740                 { WAKE_BCAST, Config5, BWF },
 741                 { WAKE_MCAST, Config5, MWF },
 742                 { WAKE_ANY,   Config5, LanWake }
 743         };
 744
 745         spin_lock_irq(&tp->lock);
 746
 747         RTL_W8(Cfg9346, Cfg9346_Unlock);
 748
 749         for (i = 0; i < ARRAY_SIZE(cfg); i++) {
 750                 u8 options = RTL_R8(cfg[i].reg) & ~cfg[i].mask;
 751                 if (wol->wolopts & cfg[i].opt)
 752                         options |= cfg[i].mask;
 753                 RTL_W8(cfg[i].reg, options);
 754         }
 755
 756         RTL_W8(Cfg9346, Cfg9346_Lock);
 757
 758         if (wol->wolopts)
 759                 tp->features |= RTL_FEATURE_WOL;
 760         else
 761                 tp->features &= ~RTL_FEATURE_WOL;
 762
 763         spin_unlock_irq(&tp->lock);
 764
 765         return 0;
 766 }
 767
 768 static void rtl8169_get_drvinfo(struct net_device *dev,
 769                                 struct ethtool_drvinfo *info)
 770 {
 771         struct rtl8169_private *tp = netdev_priv(dev);
 772
 773         strcpy(info->driver, MODULENAME);
 774         strcpy(info->version, RTL8169_VERSION);
 775         strcpy(info->bus_info, pci_name(tp->pci_dev));
 776 }
 777
 778 static int rtl8169_get_regs_len(struct net_device *dev)
 779 {
 780         return R8169_REGS_SIZE;
 781 }
 782
 783 static int rtl8169_set_speed_tbi(struct net_device *dev,
 784                                  u8 autoneg, u16 speed, u8 duplex)
 785 {
 786         struct rtl8169_private *tp = netdev_priv(dev);
 787         void __iomem *ioaddr = tp->mmio_addr;
 788         int ret = 0;
 789         u32 reg;
 790
 791         reg = RTL_R32(TBICSR);
 792         if ((autoneg == AUTONEG_DISABLE) && (speed == SPEED_1000) &&
 793             (duplex == DUPLEX_FULL)) {
 794                 RTL_W32(TBICSR, reg & ~(TBINwEnable | TBINwRestart));
 795         } else if (autoneg == AUTONEG_ENABLE)
 796                 RTL_W32(TBICSR, reg | TBINwEnable | TBINwRestart);
 797         else {
 798                 if (netif_msg_link(tp)) {
 799                         printk(KERN_WARNING "%s: "
 800                                "incorrect speed setting refused in TBI mode\n",
 801                                dev->name);
 802                 }
 803                 ret = -EOPNOTSUPP;
 804         }
 805
 806         return ret;
 807 }
 808
 809 static int rtl8169_set_speed_xmii(struct net_device *dev,
 810                                   u8 autoneg, u16 speed, u8 duplex)
 811 {
 812         struct rtl8169_private *tp = netdev_priv(dev);
 813         void __iomem *ioaddr = tp->mmio_addr;
 814         int auto_nego, giga_ctrl;
 815
 816         auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
 817         auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
 818                        ADVERTISE_100HALF | ADVERTISE_100FULL);
 819         giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
 820         giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
 821
 822         if (autoneg == AUTONEG_ENABLE) {
 823                 auto_nego |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
 824                               ADVERTISE_100HALF | ADVERTISE_100FULL);
 825                 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
 826         } else {
 827                 if (speed == SPEED_10)
 828                         auto_nego |= ADVERTISE_10HALF | ADVERTISE_10FULL;
 829                 else if (speed == SPEED_100)
 830                         auto_nego |= ADVERTISE_100HALF | ADVERTISE_100FULL;
 831                 else if (speed == SPEED_1000)
 832                         giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
 833
 834                 if (duplex == DUPLEX_HALF)
 835                         auto_nego &= ~(ADVERTISE_10FULL | ADVERTISE_100FULL);
 836
 837                 if (duplex == DUPLEX_FULL)
 838                         auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_100HALF);
 839
 840                 /* This tweak comes straight from Realtek's driver. */
 841                 if ((speed == SPEED_100) && (duplex == DUPLEX_HALF) &&
 842                     ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
 843                      (tp->mac_version == RTL_GIGA_MAC_VER_16))) {
 844                         auto_nego = ADVERTISE_100HALF | ADVERTISE_CSMA;
 845                 }
 846         }
 847
 848         /* The 8100e/8101e/8102e do Fast Ethernet only. */
 849         if ((tp->mac_version == RTL_GIGA_MAC_VER_07) ||
 850             (tp->mac_version == RTL_GIGA_MAC_VER_08) ||
 851             (tp->mac_version == RTL_GIGA_MAC_VER_09) ||
 852             (tp->mac_version == RTL_GIGA_MAC_VER_10) ||
 853             (tp->mac_version == RTL_GIGA_MAC_VER_13) ||
 854             (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
 855             (tp->mac_version == RTL_GIGA_MAC_VER_15) ||
 856             (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
 857                 if ((giga_ctrl & (ADVERTISE_1000FULL | ADVERTISE_1000HALF)) &&
 858                     netif_msg_link(tp)) {
 859                         printk(KERN_INFO "%s: PHY does not support 1000Mbps.\n",
 860                                dev->name);
 861                 }
 862                 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
 863         }
 864
 865         auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
 866
 867         if ((tp->mac_version == RTL_GIGA_MAC_VER_12) ||
 868             (tp->mac_version == RTL_GIGA_MAC_VER_17)) {
 869                 /* Vendor specific (0x1f) and reserved (0x0e) MII registers. */
 870                 mdio_write(ioaddr, 0x1f, 0x0000);
 871                 mdio_write(ioaddr, 0x0e, 0x0000);
 872         }
 873
 874         tp->phy_auto_nego_reg = auto_nego;
 875         tp->phy_1000_ctrl_reg = giga_ctrl;
 876
 877         mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
 878         mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
 879         mdio_write(ioaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
 880         return 0;
 881 }
 882
 883 static int rtl8169_set_speed(struct net_device *dev,
 884                              u8 autoneg, u16 speed, u8 duplex)
 885 {
 886         struct rtl8169_private *tp = netdev_priv(dev);
 887         int ret;
 888
 889         ret = tp->set_speed(dev, autoneg, speed, duplex);
 890
 891         if (netif_running(dev) && (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
 892                 mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
 893
 894         return ret;
 895 }
 896
 897 static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 898 {
 899         struct rtl8169_private *tp = netdev_priv(dev);
 900         unsigned long flags;
 901         int ret;
 902
 903         spin_lock_irqsave(&tp->lock, flags);
 904         ret = rtl8169_set_speed(dev, cmd->autoneg, cmd->speed, cmd->duplex);
 905         spin_unlock_irqrestore(&tp->lock, flags);
 906
 907         return ret;
 908 }
 909
 910 static u32 rtl8169_get_rx_csum(struct net_device *dev)
 911 {
 912         struct rtl8169_private *tp = netdev_priv(dev);
 913
 914         return tp->cp_cmd & RxChkSum;
 915 }
 916
 917 static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
 918 {
 919         struct rtl8169_private *tp = netdev_priv(dev);
 920         void __iomem *ioaddr = tp->mmio_addr;
 921         unsigned long flags;
 922
 923         spin_lock_irqsave(&tp->lock, flags);
 924
 925         if (data)
 926                 tp->cp_cmd |= RxChkSum;
 927         else
 928                 tp->cp_cmd &= ~RxChkSum;
 929
 930         RTL_W16(CPlusCmd, tp->cp_cmd);
 931         RTL_R16(CPlusCmd);
 932
 933         spin_unlock_irqrestore(&tp->lock, flags);
 934
 935         return 0;
 936 }
 937
 938 #ifdef CONFIG_R8169_VLAN
 939
 940 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
 941                                       struct sk_buff *skb)
 942 {
 943         return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
 944                 TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
 945 }
 946
 947 static void rtl8169_vlan_rx_register(struct net_device *dev,
 948                                      struct vlan_group *grp)
 949 {
 950         struct rtl8169_private *tp = netdev_priv(dev);
 951         void __iomem *ioaddr = tp->mmio_addr;
 952         unsigned long flags;
 953
 954         spin_lock_irqsave(&tp->lock, flags);
 955         tp->vlgrp = grp;
 956         if (tp->vlgrp)
 957                 tp->cp_cmd |= RxVlan;
 958         else
 959                 tp->cp_cmd &= ~RxVlan;
 960         RTL_W16(CPlusCmd, tp->cp_cmd);
 961         RTL_R16(CPlusCmd);
 962         spin_unlock_irqrestore(&tp->lock, flags);
 963 }
 964
 965 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
 966                                struct sk_buff *skb)
 967 {
 968         u32 opts2 = le32_to_cpu(desc->opts2);
 969         struct vlan_group *vlgrp = tp->vlgrp;
 970         int ret;
 971
 972         if (vlgrp && (opts2 & RxVlanTag)) {
 973                 vlan_hwaccel_receive_skb(skb, vlgrp, swab16(opts2 & 0xffff));
 974                 ret = 0;
 975         } else
 976                 ret = -1;
 977         desc->opts2 = 0;
 978         return ret;
 979 }
 980
 981 #else /* !CONFIG_R8169_VLAN */
 982
 983 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
 984                                       struct sk_buff *skb)
 985 {
 986         return 0;
 987 }
 988
 989 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
 990                                struct sk_buff *skb)
 991 {
 992         return -1;
 993 }
 994
 995 #endif
 996
 997 static int rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
 998 {
 999         struct rtl8169_private *tp = netdev_priv(dev);
1000         void __iomem *ioaddr = tp->mmio_addr;
1001         u32 status;
1002
1003         cmd->supported =
1004                 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE;
1005         cmd->port = PORT_FIBRE;
1006         cmd->transceiver = XCVR_INTERNAL;
1007
1008         status = RTL_R32(TBICSR);
1009         cmd->advertising = (status & TBINwEnable) ?  ADVERTISED_Autoneg : 0;
1010         cmd->autoneg = !!(status & TBINwEnable);
1011
1012         cmd->speed = SPEED_1000;
1013         cmd->duplex = DUPLEX_FULL; /* Always set */
1014
1015         return 0;
1016 }
1017
1018 static int rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
1019 {
1020         struct rtl8169_private *tp = netdev_priv(dev);
1021
1022         return mii_ethtool_gset(&tp->mii, cmd);
1023 }
1024
1025 static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1026 {
1027         struct rtl8169_private *tp = netdev_priv(dev);
1028         unsigned long flags;
1029         int rc;
1030
1031         spin_lock_irqsave(&tp->lock, flags);
1032
1033         rc = tp->get_settings(dev, cmd);
1034
1035         spin_unlock_irqrestore(&tp->lock, flags);
1036         return rc;
1037 }
1038
1039 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1040                              void *p)
1041 {
1042         struct rtl8169_private *tp = netdev_priv(dev);
1043         unsigned long flags;
1044
1045         if (regs->len > R8169_REGS_SIZE)
1046                 regs->len = R8169_REGS_SIZE;
1047
1048         spin_lock_irqsave(&tp->lock, flags);
1049         memcpy_fromio(p, tp->mmio_addr, regs->len);
1050         spin_unlock_irqrestore(&tp->lock, flags);
1051 }
1052
1053 static u32 rtl8169_get_msglevel(struct net_device *dev)
1054 {
1055         struct rtl8169_private *tp = netdev_priv(dev);
1056
1057         return tp->msg_enable;
1058 }
1059
1060 static void rtl8169_set_msglevel(struct net_device *dev, u32 value)
1061 {
1062         struct rtl8169_private *tp = netdev_priv(dev);
1063
1064         tp->msg_enable = value;
1065 }
1066
1067 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
1068         "tx_packets",
1069         "rx_packets",
1070         "tx_errors",
1071         "rx_errors",
1072         "rx_missed",
1073         "align_errors",
1074         "tx_single_collisions",
1075         "tx_multi_collisions",
1076         "unicast",
1077         "broadcast",
1078         "multicast",
1079         "tx_aborted",
1080         "tx_underrun",
1081 };
1082
1083 struct rtl8169_counters {
1084         __le64  tx_packets;
1085         __le64  rx_packets;
1086         __le64  tx_errors;
1087         __le32  rx_errors;
1088         __le16  rx_missed;
1089         __le16  align_errors;
1090         __le32  tx_one_collision;
1091         __le32  tx_multi_collision;
1092         __le64  rx_unicast;
1093         __le64  rx_broadcast;
1094         __le32  rx_multicast;
1095         __le16  tx_aborted;
1096         __le16  tx_underun;
1097 };
1098
1099 static int rtl8169_get_sset_count(struct net_device *dev, int sset)
1100 {
1101         switch (sset) {
1102         case ETH_SS_STATS:
1103                 return ARRAY_SIZE(rtl8169_gstrings);
1104         default:
1105                 return -EOPNOTSUPP;
1106         }
1107 }
1108
1109 static void rtl8169_get_ethtool_stats(struct net_device *dev,
1110                                       struct ethtool_stats *stats, u64 *data)
1111 {
1112         struct rtl8169_private *tp = netdev_priv(dev);
1113         void __iomem *ioaddr = tp->mmio_addr;
1114         struct rtl8169_counters *counters;
1115         dma_addr_t paddr;
1116         u32 cmd;
1117
1118         ASSERT_RTNL();
1119
1120         counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
1121         if (!counters)
1122                 return;
1123
1124         RTL_W32(CounterAddrHigh, (u64)paddr >> 32);
1125         cmd = (u64)paddr & DMA_32BIT_MASK;
1126         RTL_W32(CounterAddrLow, cmd);
1127         RTL_W32(CounterAddrLow, cmd | CounterDump);
1128
1129         while (RTL_R32(CounterAddrLow) & CounterDump) {
1130                 if (msleep_interruptible(1))
1131                         break;
1132         }
1133
1134         RTL_W32(CounterAddrLow, 0);
1135         RTL_W32(CounterAddrHigh, 0);
1136
1137         data[0] = le64_to_cpu(counters->tx_packets);
1138         data[1] = le64_to_cpu(counters->rx_packets);
1139         data[2] = le64_to_cpu(counters->tx_errors);
1140         data[3] = le32_to_cpu(counters->rx_errors);
1141         data[4] = le16_to_cpu(counters->rx_missed);
1142         data[5] = le16_to_cpu(counters->align_errors);
1143         data[6] = le32_to_cpu(counters->tx_one_collision);
1144         data[7] = le32_to_cpu(counters->tx_multi_collision);
1145         data[8] = le64_to_cpu(counters->rx_unicast);
1146         data[9] = le64_to_cpu(counters->rx_broadcast);
1147         data[10] = le32_to_cpu(counters->rx_multicast);
1148         data[11] = le16_to_cpu(counters->tx_aborted);
1149         data[12] = le16_to_cpu(counters->tx_underun);
1150
1151         pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
1152 }
1153
1154 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1155 {
1156         switch(stringset) {
1157         case ETH_SS_STATS:
1158                 memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
1159                 break;
1160         }
1161 }
1162
1163 static const struct ethtool_ops rtl8169_ethtool_ops = {
1164         .get_drvinfo            = rtl8169_get_drvinfo,
1165         .get_regs_len           = rtl8169_get_regs_len,
1166         .get_link               = ethtool_op_get_link,
1167         .get_settings           = rtl8169_get_settings,
1168         .set_settings           = rtl8169_set_settings,
1169         .get_msglevel           = rtl8169_get_msglevel,
1170         .set_msglevel           = rtl8169_set_msglevel,
1171         .get_rx_csum            = rtl8169_get_rx_csum,
1172         .set_rx_csum            = rtl8169_set_rx_csum,
1173         .set_tx_csum            = ethtool_op_set_tx_csum,
1174         .set_sg                 = ethtool_op_set_sg,
1175         .set_tso                = ethtool_op_set_tso,
1176         .get_regs               = rtl8169_get_regs,
1177         .get_wol                = rtl8169_get_wol,
1178         .set_wol                = rtl8169_set_wol,
1179         .get_strings            = rtl8169_get_strings,
1180         .get_sset_count         = rtl8169_get_sset_count,
1181         .get_ethtool_stats      = rtl8169_get_ethtool_stats,
1182 };
1183
1184 static void rtl8169_write_gmii_reg_bit(void __iomem *ioaddr, int reg,
1185                                        int bitnum, int bitval)
1186 {
1187         int val;
1188
1189         val = mdio_read(ioaddr, reg);
1190         val = (bitval == 1) ?
1191                 val | (bitval << bitnum) :  val & ~(0x0001 << bitnum);
1192         mdio_write(ioaddr, reg, val & 0xffff);
1193 }
1194
1195 static void rtl8169_get_mac_version(struct rtl8169_private *tp,
1196                                     void __iomem *ioaddr)
1197 {
1198         /*
1199          * The driver currently handles the 8168Bf and the 8168Be identically
1200          * but they can be identified more specifically through the test below
1201          * if needed:
1202          *
1203          * (RTL_R32(TxConfig) & 0x700000) == 0x500000 ? 8168Bf : 8168Be
1204          *
1205          * Same thing for the 8101Eb and the 8101Ec:
1206          *
1207          * (RTL_R32(TxConfig) & 0x700000) == 0x200000 ? 8101Eb : 8101Ec
1208          */
1209         const struct {
1210                 u32 mask;
1211                 u32 val;
1212                 int mac_version;
1213         } mac_info[] = {
1214                 /* 8168B family. */
1215                 { 0x7c800000, 0x3c800000,       RTL_GIGA_MAC_VER_18 },
1216                 { 0x7cf00000, 0x3c000000,       RTL_GIGA_MAC_VER_19 },
1217                 { 0x7cf00000, 0x3c200000,       RTL_GIGA_MAC_VER_20 },
1218                 { 0x7c800000, 0x3c000000,       RTL_GIGA_MAC_VER_20 },
1219
1220                 /* 8168B family. */
1221                 { 0x7cf00000, 0x38000000,       RTL_GIGA_MAC_VER_12 },
1222                 { 0x7cf00000, 0x38500000,       RTL_GIGA_MAC_VER_17 },
1223                 { 0x7c800000, 0x38000000,       RTL_GIGA_MAC_VER_17 },
1224                 { 0x7c800000, 0x30000000,       RTL_GIGA_MAC_VER_11 },
1225
1226                 /* 8101 family. */
1227                 { 0x7cf00000, 0x34a00000,       RTL_GIGA_MAC_VER_09 },
1228                 { 0x7cf00000, 0x24a00000,       RTL_GIGA_MAC_VER_09 },
1229                 { 0x7cf00000, 0x34900000,       RTL_GIGA_MAC_VER_08 },
1230                 { 0x7cf00000, 0x24900000,       RTL_GIGA_MAC_VER_08 },
1231                 { 0x7cf00000, 0x34800000,       RTL_GIGA_MAC_VER_07 },
1232                 { 0x7cf00000, 0x24800000,       RTL_GIGA_MAC_VER_07 },
1233                 { 0x7cf00000, 0x34000000,       RTL_GIGA_MAC_VER_13 },
1234                 { 0x7cf00000, 0x34300000,       RTL_GIGA_MAC_VER_10 },
1235                 { 0x7cf00000, 0x34200000,       RTL_GIGA_MAC_VER_16 },
1236                 { 0x7c800000, 0x34800000,       RTL_GIGA_MAC_VER_09 },
1237                 { 0x7c800000, 0x24800000,       RTL_GIGA_MAC_VER_09 },
1238                 { 0x7c800000, 0x34000000,       RTL_GIGA_MAC_VER_16 },
1239                 /* FIXME: where did these entries come from ? -- FR */
1240                 { 0xfc800000, 0x38800000,       RTL_GIGA_MAC_VER_15 },
1241                 { 0xfc800000, 0x30800000,       RTL_GIGA_MAC_VER_14 },
1242
1243                 /* 8110 family. */
1244                 { 0xfc800000, 0x98000000,       RTL_GIGA_MAC_VER_06 },
1245                 { 0xfc800000, 0x18000000,       RTL_GIGA_MAC_VER_05 },
1246                 { 0xfc800000, 0x10000000,       RTL_GIGA_MAC_VER_04 },
1247                 { 0xfc800000, 0x04000000,       RTL_GIGA_MAC_VER_03 },
1248                 { 0xfc800000, 0x00800000,       RTL_GIGA_MAC_VER_02 },
1249                 { 0xfc800000, 0x00000000,       RTL_GIGA_MAC_VER_01 },
1250
1251                 { 0x00000000, 0x00000000,       RTL_GIGA_MAC_VER_01 }   /* Catch-all */
1252         }, *p = mac_info;
1253         u32 reg;
1254
1255         reg = RTL_R32(TxConfig);
1256         while ((reg & p->mask) != p->val)
1257                 p++;
1258         tp->mac_version = p->mac_version;
1259
1260         if (p->mask == 0x00000000) {
1261                 struct pci_dev *pdev = tp->pci_dev;
1262
1263                 dev_info(&pdev->dev, "unknown MAC (%08x)\n", reg);
1264         }
1265 }
1266
1267 static void rtl8169_print_mac_version(struct rtl8169_private *tp)
1268 {
1269         dprintk("mac_version = 0x%02x\n", tp->mac_version);
1270 }
1271
1272 struct phy_reg {
1273         u16 reg;
1274         u16 val;
1275 };
1276
1277 static void rtl_phy_write(void __iomem *ioaddr, struct phy_reg *regs, int len)
1278 {
1279         while (len-- > 0) {
1280                 mdio_write(ioaddr, regs->reg, regs->val);
1281                 regs++;
1282         }
1283 }
1284
1285 static void rtl8169s_hw_phy_config(void __iomem *ioaddr)
1286 {
1287         struct {
1288                 u16 regs[5]; /* Beware of bit-sign propagation */
1289         } phy_magic[5] = { {
1290                 { 0x0000,       //w 4 15 12 0
1291                   0x00a1,       //w 3 15 0 00a1
1292                   0x0008,       //w 2 15 0 0008
1293                   0x1020,       //w 1 15 0 1020
1294                   0x1000 } },{  //w 0 15 0 1000
1295                 { 0x7000,       //w 4 15 12 7
1296                   0xff41,       //w 3 15 0 ff41
1297                   0xde60,       //w 2 15 0 de60
1298                   0x0140,       //w 1 15 0 0140
1299                   0x0077 } },{  //w 0 15 0 0077
1300                 { 0xa000,       //w 4 15 12 a
1301                   0xdf01,       //w 3 15 0 df01
1302                   0xdf20,       //w 2 15 0 df20
1303                   0xff95,       //w 1 15 0 ff95
1304                   0xfa00 } },{  //w 0 15 0 fa00
1305                 { 0xb000,       //w 4 15 12 b
1306                   0xff41,       //w 3 15 0 ff41
1307                   0xde20,       //w 2 15 0 de20
1308                   0x0140,       //w 1 15 0 0140
1309                   0x00bb } },{  //w 0 15 0 00bb
1310                 { 0xf000,       //w 4 15 12 f
1311                   0xdf01,       //w 3 15 0 df01
1312                   0xdf20,       //w 2 15 0 df20
1313                   0xff95,       //w 1 15 0 ff95
1314                   0xbf00 }      //w 0 15 0 bf00
1315                 }
1316         }, *p = phy_magic;
1317         unsigned int i;
1318
1319         mdio_write(ioaddr, 0x1f, 0x0001);               //w 31 2 0 1
1320         mdio_write(ioaddr, 0x15, 0x1000);               //w 21 15 0 1000
1321         mdio_write(ioaddr, 0x18, 0x65c7);               //w 24 15 0 65c7
1322         rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0);   //w 4 11 11 0
1323
1324         for (i = 0; i < ARRAY_SIZE(phy_magic); i++, p++) {
1325                 int val, pos = 4;
1326
1327                 val = (mdio_read(ioaddr, pos) & 0x0fff) | (p->regs[0] & 0xffff);
1328                 mdio_write(ioaddr, pos, val);
1329                 while (--pos >= 0)
1330                         mdio_write(ioaddr, pos, p->regs[4 - pos] & 0xffff);
1331                 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 1); //w 4 11 11 1
1332                 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1333         }
1334         mdio_write(ioaddr, 0x1f, 0x0000); //w 31 2 0 0
1335 }
1336
1337 static void rtl8169sb_hw_phy_config(void __iomem *ioaddr)
1338 {
1339         struct phy_reg phy_reg_init[] = {
1340                 { 0x1f, 0x0002 },
1341                 { 0x01, 0x90d0 },
1342                 { 0x1f, 0x0000 }
1343         };
1344
1345         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1346 }
1347
1348 static void rtl8168cp_hw_phy_config(void __iomem *ioaddr)
1349 {
1350         struct phy_reg phy_reg_init[] = {
1351                 { 0x1f, 0x0000 },
1352                 { 0x1d, 0x0f00 },
1353                 { 0x1f, 0x0002 },
1354                 { 0x0c, 0x1ec8 },
1355                 { 0x1f, 0x0000 }
1356         };
1357
1358         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1359 }
1360
1361 static void rtl8168c_hw_phy_config(void __iomem *ioaddr)
1362 {
1363         struct phy_reg phy_reg_init[] = {
1364                 { 0x1f, 0x0001 },
1365                 { 0x12, 0x2300 },
1366                 { 0x1f, 0x0002 },
1367                 { 0x00, 0x88d4 },
1368                 { 0x01, 0x82b1 },
1369                 { 0x03, 0x7002 },
1370                 { 0x08, 0x9e30 },
1371                 { 0x09, 0x01f0 },
1372                 { 0x0a, 0x5500 },
1373                 { 0x0c, 0x00c8 },
1374                 { 0x1f, 0x0003 },
1375                 { 0x12, 0xc096 },
1376                 { 0x16, 0x000a },
1377                 { 0x1f, 0x0000 }
1378         };
1379
1380         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1381 }
1382
1383 static void rtl8168cx_hw_phy_config(void __iomem *ioaddr)
1384 {
1385         struct phy_reg phy_reg_init[] = {
1386                 { 0x1f, 0x0000 },
1387                 { 0x12, 0x2300 },
1388                 { 0x1f, 0x0003 },
1389                 { 0x16, 0x0f0a },
1390                 { 0x1f, 0x0000 },
1391                 { 0x1f, 0x0002 },
1392                 { 0x0c, 0x7eb8 },
1393                 { 0x1f, 0x0000 }
1394         };
1395
1396         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1397 }
1398
1399 static void rtl8102e_hw_phy_config(void __iomem *ioaddr)
1400 {
1401         struct phy_reg phy_reg_init[] = {
1402                 { 0x1f, 0x0003 },
1403                 { 0x08, 0x441d },
1404                 { 0x01, 0x9100 },
1405                 { 0x1f, 0x0000 }
1406         };
1407
1408         mdio_write(ioaddr, 0x1f, 0x0000);
1409         mdio_patch(ioaddr, 0x11, 1 << 12);
1410         mdio_patch(ioaddr, 0x19, 1 << 13);
1411
1412         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1413 }
1414
1415 static void rtl_hw_phy_config(struct net_device *dev)
1416 {
1417         struct rtl8169_private *tp = netdev_priv(dev);
1418         void __iomem *ioaddr = tp->mmio_addr;
1419
1420         rtl8169_print_mac_version(tp);
1421
1422         switch (tp->mac_version) {
1423         case RTL_GIGA_MAC_VER_01:
1424                 break;
1425         case RTL_GIGA_MAC_VER_02:
1426         case RTL_GIGA_MAC_VER_03:
1427                 rtl8169s_hw_phy_config(ioaddr);
1428                 break;
1429         case RTL_GIGA_MAC_VER_04:
1430                 rtl8169sb_hw_phy_config(ioaddr);
1431                 break;
1432         case RTL_GIGA_MAC_VER_07:
1433         case RTL_GIGA_MAC_VER_08:
1434         case RTL_GIGA_MAC_VER_09:
1435                 rtl8102e_hw_phy_config(ioaddr);
1436                 break;
1437         case RTL_GIGA_MAC_VER_18:
1438                 rtl8168cp_hw_phy_config(ioaddr);
1439                 break;
1440         case RTL_GIGA_MAC_VER_19:
1441                 rtl8168c_hw_phy_config(ioaddr);
1442                 break;
1443         case RTL_GIGA_MAC_VER_20:
1444                 rtl8168cx_hw_phy_config(ioaddr);
1445                 break;
1446         default:
1447                 break;
1448         }
1449 }
1450
1451 static void rtl8169_phy_timer(unsigned long __opaque)
1452 {
1453         struct net_device *dev = (struct net_device *)__opaque;
1454         struct rtl8169_private *tp = netdev_priv(dev);
1455         struct timer_list *timer = &tp->timer;
1456         void __iomem *ioaddr = tp->mmio_addr;
1457         unsigned long timeout = RTL8169_PHY_TIMEOUT;
1458
1459         assert(tp->mac_version > RTL_GIGA_MAC_VER_01);
1460
1461         if (!(tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
1462                 return;
1463
1464         spin_lock_irq(&tp->lock);
1465
1466         if (tp->phy_reset_pending(ioaddr)) {
1467                 /*
1468                  * A busy loop could burn quite a few cycles on nowadays CPU.
1469                  * Let's delay the execution of the timer for a few ticks.
1470                  */
1471                 timeout = HZ/10;
1472                 goto out_mod_timer;
1473         }
1474
1475         if (tp->link_ok(ioaddr))
1476                 goto out_unlock;
1477
1478         if (netif_msg_link(tp))
1479                 printk(KERN_WARNING "%s: PHY reset until link up\n", dev->name);
1480
1481         tp->phy_reset_enable(ioaddr);
1482
1483 out_mod_timer:
1484         mod_timer(timer, jiffies + timeout);
1485 out_unlock:
1486         spin_unlock_irq(&tp->lock);
1487 }
1488
1489 static inline void rtl8169_delete_timer(struct net_device *dev)
1490 {
1491         struct rtl8169_private *tp = netdev_priv(dev);
1492         struct timer_list *timer = &tp->timer;
1493
1494         if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1495                 return;
1496
1497         del_timer_sync(timer);
1498 }
1499
1500 static inline void rtl8169_request_timer(struct net_device *dev)
1501 {
1502         struct rtl8169_private *tp = netdev_priv(dev);
1503         struct timer_list *timer = &tp->timer;
1504
1505         if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1506                 return;
1507
1508         mod_timer(timer, jiffies + RTL8169_PHY_TIMEOUT);
1509 }
1510
1511 #ifdef CONFIG_NET_POLL_CONTROLLER
1512 /*
1513  * Polling 'interrupt' - used by things like netconsole to send skbs
1514  * without having to re-enable interrupts. It's not called while
1515  * the interrupt routine is executing.
1516  */
1517 static void rtl8169_netpoll(struct net_device *dev)
1518 {
1519         struct rtl8169_private *tp = netdev_priv(dev);
1520         struct pci_dev *pdev = tp->pci_dev;
1521
1522         disable_irq(pdev->irq);
1523         rtl8169_interrupt(pdev->irq, dev);
1524         enable_irq(pdev->irq);
1525 }
1526 #endif
1527
1528 static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
1529                                   void __iomem *ioaddr)
1530 {
1531         iounmap(ioaddr);
1532         pci_release_regions(pdev);
1533         pci_disable_device(pdev);
1534         free_netdev(dev);
1535 }
1536
1537 static void rtl8169_phy_reset(struct net_device *dev,
1538                               struct rtl8169_private *tp)
1539 {
1540         void __iomem *ioaddr = tp->mmio_addr;
1541         unsigned int i;
1542
1543         tp->phy_reset_enable(ioaddr);
1544         for (i = 0; i < 100; i++) {
1545                 if (!tp->phy_reset_pending(ioaddr))
1546                         return;
1547                 msleep(1);
1548         }
1549         if (netif_msg_link(tp))
1550                 printk(KERN_ERR "%s: PHY reset failed.\n", dev->name);
1551 }
1552
1553 static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
1554 {
1555         void __iomem *ioaddr = tp->mmio_addr;
1556
1557         rtl_hw_phy_config(dev);
1558
1559         if (tp->mac_version <= RTL_GIGA_MAC_VER_06) {
1560                 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1561                 RTL_W8(0x82, 0x01);
1562         }
1563
1564         pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
1565
1566         if (tp->mac_version <= RTL_GIGA_MAC_VER_06)
1567                 pci_write_config_byte(tp->pci_dev, PCI_CACHE_LINE_SIZE, 0x08);
1568
1569         if (tp->mac_version == RTL_GIGA_MAC_VER_02) {
1570                 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1571                 RTL_W8(0x82, 0x01);
1572                 dprintk("Set PHY Reg 0x0bh = 0x00h\n");
1573                 mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
1574         }
1575
1576         rtl8169_phy_reset(dev, tp);
1577
1578         /*
1579          * rtl8169_set_speed_xmii takes good care of the Fast Ethernet
1580          * only 8101. Don't panic.
1581          */
1582         rtl8169_set_speed(dev, AUTONEG_ENABLE, SPEED_1000, DUPLEX_FULL);
1583
1584         if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))
1585                 printk(KERN_INFO PFX "%s: TBI auto-negotiating\n", dev->name);
1586 }
1587
1588 static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
1589 {
1590         void __iomem *ioaddr = tp->mmio_addr;
1591         u32 high;
1592         u32 low;
1593
1594         low  = addr[0] | (addr[1] << 8) | (addr[2] << 16) | (addr[3] << 24);
1595         high = addr[4] | (addr[5] << 8);
1596
1597         spin_lock_irq(&tp->lock);
1598
1599         RTL_W8(Cfg9346, Cfg9346_Unlock);
1600         RTL_W32(MAC0, low);
1601         RTL_W32(MAC4, high);
1602         RTL_W8(Cfg9346, Cfg9346_Lock);
1603
1604         spin_unlock_irq(&tp->lock);
1605 }
1606
1607 static int rtl_set_mac_address(struct net_device *dev, void *p)
1608 {
1609         struct rtl8169_private *tp = netdev_priv(dev);
1610         struct sockaddr *addr = p;
1611
1612         if (!is_valid_ether_addr(addr->sa_data))
1613                 return -EADDRNOTAVAIL;
1614
1615         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1616
1617         rtl_rar_set(tp, dev->dev_addr);
1618
1619         return 0;
1620 }
1621
1622 static int rtl8169_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1623 {
1624         struct rtl8169_private *tp = netdev_priv(dev);
1625         struct mii_ioctl_data *data = if_mii(ifr);
1626
1627         if (!netif_running(dev))
1628                 return -ENODEV;
1629
1630         switch (cmd) {
1631         case SIOCGMIIPHY:
1632                 data->phy_id = 32; /* Internal PHY */
1633                 return 0;
1634
1635         case SIOCGMIIREG:
1636                 data->val_out = mdio_read(tp->mmio_addr, data->reg_num & 0x1f);
1637                 return 0;
1638
1639         case SIOCSMIIREG:
1640                 if (!capable(CAP_NET_ADMIN))
1641                         return -EPERM;
1642                 mdio_write(tp->mmio_addr, data->reg_num & 0x1f, data->val_in);
1643                 return 0;
1644         }
1645         return -EOPNOTSUPP;
1646 }
1647
1648 static const struct rtl_cfg_info {
1649         void (*hw_start)(struct net_device *);
1650         unsigned int region;
1651         unsigned int align;
1652         u16 intr_event;
1653         u16 napi_event;
1654         unsigned features;
1655 } rtl_cfg_infos [] = {
1656         [RTL_CFG_0] = {
1657                 .hw_start       = rtl_hw_start_8169,
1658                 .region         = 1,
1659                 .align          = 0,
1660                 .intr_event     = SYSErr | LinkChg | RxOverflow |
1661                                   RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1662                 .napi_event     = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1663                 .features       = RTL_FEATURE_GMII
1664         },
1665         [RTL_CFG_1] = {
1666                 .hw_start       = rtl_hw_start_8168,
1667                 .region         = 2,
1668                 .align          = 8,
1669                 .intr_event     = SYSErr | LinkChg | RxOverflow |
1670                                   TxErr | TxOK | RxOK | RxErr,
1671                 .napi_event     = TxErr | TxOK | RxOK | RxOverflow,
1672                 .features       = RTL_FEATURE_GMII | RTL_FEATURE_MSI
1673         },
1674         [RTL_CFG_2] = {
1675                 .hw_start       = rtl_hw_start_8101,
1676                 .region         = 2,
1677                 .align          = 8,
1678                 .intr_event     = SYSErr | LinkChg | RxOverflow | PCSTimeout |
1679                                   RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1680                 .napi_event     = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1681                 .features       = RTL_FEATURE_MSI
1682         }
1683 };
1684
1685 /* Cfg9346_Unlock assumed. */
1686 static unsigned rtl_try_msi(struct pci_dev *pdev, void __iomem *ioaddr,
1687                             const struct rtl_cfg_info *cfg)
1688 {
1689         unsigned msi = 0;
1690         u8 cfg2;
1691
1692         cfg2 = RTL_R8(Config2) & ~MSIEnable;
1693         if (cfg->features & RTL_FEATURE_MSI) {
1694                 if (pci_enable_msi(pdev)) {
1695                         dev_info(&pdev->dev, "no MSI. Back to INTx.\n");
1696                 } else {
1697                         cfg2 |= MSIEnable;
1698                         msi = RTL_FEATURE_MSI;
1699                 }
1700         }
1701         RTL_W8(Config2, cfg2);
1702         return msi;
1703 }
1704
1705 static void rtl_disable_msi(struct pci_dev *pdev, struct rtl8169_private *tp)
1706 {
1707         if (tp->features & RTL_FEATURE_MSI) {
1708                 pci_disable_msi(pdev);
1709                 tp->features &= ~RTL_FEATURE_MSI;
1710         }
1711 }
1712
1713 static int __devinit
1714 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1715 {
1716         const struct rtl_cfg_info *cfg = rtl_cfg_infos + ent->driver_data;
1717         const unsigned int region = cfg->region;
1718         struct rtl8169_private *tp;
1719         struct mii_if_info *mii;
1720         struct net_device *dev;
1721         void __iomem *ioaddr;
1722         unsigned int i;
1723         int rc;
1724
1725         if (netif_msg_drv(&debug)) {
1726                 printk(KERN_INFO "%s Gigabit Ethernet driver %s loaded\n",
1727                        MODULENAME, RTL8169_VERSION);
1728         }
1729
1730         dev = alloc_etherdev(sizeof (*tp));
1731         if (!dev) {
1732                 if (netif_msg_drv(&debug))
1733                         dev_err(&pdev->dev, "unable to alloc new ethernet\n");
1734                 rc = -ENOMEM;
1735                 goto out;
1736         }
1737
1738         SET_NETDEV_DEV(dev, &pdev->dev);
1739         tp = netdev_priv(dev);
1740         tp->dev = dev;
1741         tp->pci_dev = pdev;
1742         tp->msg_enable = netif_msg_init(debug.msg_enable, R8169_MSG_DEFAULT);
1743
1744         mii = &tp->mii;
1745         mii->dev = dev;
1746         mii->mdio_read = rtl_mdio_read;
1747         mii->mdio_write = rtl_mdio_write;
1748         mii->phy_id_mask = 0x1f;
1749         mii->reg_num_mask = 0x1f;
1750         mii->supports_gmii = !!(cfg->features & RTL_FEATURE_GMII);
1751
1752         /* enable device (incl. PCI PM wakeup and hotplug setup) */
1753         rc = pci_enable_device(pdev);
1754         if (rc < 0) {
1755                 if (netif_msg_probe(tp))
1756                         dev_err(&pdev->dev, "enable failure\n");
1757                 goto err_out_free_dev_1;
1758         }
1759
1760         rc = pci_set_mwi(pdev);
1761         if (rc < 0)
1762                 goto err_out_disable_2;
1763
1764         /* make sure PCI base addr 1 is MMIO */
1765         if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
1766                 if (netif_msg_probe(tp)) {
1767                         dev_err(&pdev->dev,
1768                                 "region #%d not an MMIO resource, aborting\n",
1769                                 region);
1770                 }
1771                 rc = -ENODEV;
1772                 goto err_out_mwi_3;
1773         }
1774
1775         /* check for weird/broken PCI region reporting */
1776         if (pci_resource_len(pdev, region) < R8169_REGS_SIZE) {
1777                 if (netif_msg_probe(tp)) {
1778                         dev_err(&pdev->dev,
1779                                 "Invalid PCI region size(s), aborting\n");
1780                 }
1781                 rc = -ENODEV;
1782                 goto err_out_mwi_3;
1783         }
1784
1785         rc = pci_request_regions(pdev, MODULENAME);
1786         if (rc < 0) {
1787                 if (netif_msg_probe(tp))
1788                         dev_err(&pdev->dev, "could not request regions.\n");
1789                 goto err_out_mwi_3;
1790         }
1791
1792         tp->cp_cmd = PCIMulRW | RxChkSum;
1793
1794         if ((sizeof(dma_addr_t) > 4) &&
1795             !pci_set_dma_mask(pdev, DMA_64BIT_MASK) && use_dac) {
1796                 tp->cp_cmd |= PCIDAC;
1797                 dev->features |= NETIF_F_HIGHDMA;
1798         } else {
1799                 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1800                 if (rc < 0) {
1801                         if (netif_msg_probe(tp)) {
1802                                 dev_err(&pdev->dev,
1803                                         "DMA configuration failed.\n");
1804                         }
1805                         goto err_out_free_res_4;
1806                 }
1807         }
1808
1809         pci_set_master(pdev);
1810
1811         /* ioremap MMIO region */
1812         ioaddr = ioremap(pci_resource_start(pdev, region), R8169_REGS_SIZE);
1813         if (!ioaddr) {
1814                 if (netif_msg_probe(tp))
1815                         dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
1816                 rc = -EIO;
1817                 goto err_out_free_res_4;
1818         }
1819
1820         tp->pcie_cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
1821         if (!tp->pcie_cap && netif_msg_probe(tp))
1822                 dev_info(&pdev->dev, "no PCI Express capability\n");
1823
1824         /* Unneeded ? Don't mess with Mrs. Murphy. */
1825         rtl8169_irq_mask_and_ack(ioaddr);
1826
1827         /* Soft reset the chip. */
1828         RTL_W8(ChipCmd, CmdReset);
1829
1830         /* Check that the chip has finished the reset. */
1831         for (i = 0; i < 100; i++) {
1832                 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
1833                         break;
1834                 msleep_interruptible(1);
1835         }
1836
1837         /* Identify chip attached to board */
1838         rtl8169_get_mac_version(tp, ioaddr);
1839
1840         rtl8169_print_mac_version(tp);
1841
1842         for (i = 0; i < ARRAY_SIZE(rtl_chip_info); i++) {
1843                 if (tp->mac_version == rtl_chip_info[i].mac_version)
1844                         break;
1845         }
1846         if (i == ARRAY_SIZE(rtl_chip_info)) {
1847                 /* Unknown chip: assume array element #0, original RTL-8169 */
1848                 if (netif_msg_probe(tp)) {
1849                         dev_printk(KERN_DEBUG, &pdev->dev,
1850                                 "unknown chip version, assuming %s\n",
1851                                 rtl_chip_info[0].name);
1852                 }
1853                 i = 0;
1854         }
1855         tp->chipset = i;
1856
1857         RTL_W8(Cfg9346, Cfg9346_Unlock);
1858         RTL_W8(Config1, RTL_R8(Config1) | PMEnable);
1859         RTL_W8(Config5, RTL_R8(Config5) & PMEStatus);
1860         tp->features |= rtl_try_msi(pdev, ioaddr, cfg);
1861         RTL_W8(Cfg9346, Cfg9346_Lock);
1862
1863         if ((tp->mac_version <= RTL_GIGA_MAC_VER_06) &&
1864             (RTL_R8(PHYstatus) & TBI_Enable)) {
1865                 tp->set_speed = rtl8169_set_speed_tbi;
1866                 tp->get_settings = rtl8169_gset_tbi;
1867                 tp->phy_reset_enable = rtl8169_tbi_reset_enable;
1868                 tp->phy_reset_pending = rtl8169_tbi_reset_pending;
1869                 tp->link_ok = rtl8169_tbi_link_ok;
1870
1871                 tp->phy_1000_ctrl_reg = ADVERTISE_1000FULL; /* Implied by TBI */
1872         } else {
1873                 tp->set_speed = rtl8169_set_speed_xmii;
1874                 tp->get_settings = rtl8169_gset_xmii;
1875                 tp->phy_reset_enable = rtl8169_xmii_reset_enable;
1876                 tp->phy_reset_pending = rtl8169_xmii_reset_pending;
1877                 tp->link_ok = rtl8169_xmii_link_ok;
1878
1879                 dev->do_ioctl = rtl8169_ioctl;
1880         }
1881
1882         /* Get MAC address.  FIXME: read EEPROM */
1883         for (i = 0; i < MAC_ADDR_LEN; i++)
1884                 dev->dev_addr[i] = RTL_R8(MAC0 + i);
1885         memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
1886
1887         dev->open = rtl8169_open;
1888         dev->hard_start_xmit = rtl8169_start_xmit;
1889         dev->get_stats = rtl8169_get_stats;
1890         SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
1891         dev->stop = rtl8169_close;
1892         dev->tx_timeout = rtl8169_tx_timeout;
1893         dev->set_multicast_list = rtl_set_rx_mode;
1894         dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
1895         dev->irq = pdev->irq;
1896         dev->base_addr = (unsigned long) ioaddr;
1897         dev->change_mtu = rtl8169_change_mtu;
1898         dev->set_mac_address = rtl_set_mac_address;
1899
1900         netif_napi_add(dev, &tp->napi, rtl8169_poll, R8169_NAPI_WEIGHT);
1901
1902 #ifdef CONFIG_R8169_VLAN
1903         dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1904         dev->vlan_rx_register = rtl8169_vlan_rx_register;
1905 #endif
1906
1907 #ifdef CONFIG_NET_POLL_CONTROLLER
1908         dev->poll_controller = rtl8169_netpoll;
1909 #endif
1910
1911         tp->intr_mask = 0xffff;
1912         tp->mmio_addr = ioaddr;
1913         tp->align = cfg->align;
1914         tp->hw_start = cfg->hw_start;
1915         tp->intr_event = cfg->intr_event;
1916         tp->napi_event = cfg->napi_event;
1917
1918         init_timer(&tp->timer);
1919         tp->timer.data = (unsigned long) dev;
1920         tp->timer.function = rtl8169_phy_timer;
1921
1922         spin_lock_init(&tp->lock);
1923
1924         rc = register_netdev(dev);
1925         if (rc < 0)
1926                 goto err_out_msi_5;
1927
1928         pci_set_drvdata(pdev, dev);
1929
1930         if (netif_msg_probe(tp)) {
1931                 u32 xid = RTL_R32(TxConfig) & 0x7cf0f8ff;
1932
1933                 printk(KERN_INFO "%s: %s at 0x%lx, "
1934                        "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
1935                        "XID %08x IRQ %d\n",
1936                        dev->name,
1937                        rtl_chip_info[tp->chipset].name,
1938                        dev->base_addr,
1939                        dev->dev_addr[0], dev->dev_addr[1],
1940                        dev->dev_addr[2], dev->dev_addr[3],
1941                        dev->dev_addr[4], dev->dev_addr[5], xid, dev->irq);
1942         }
1943
1944         rtl8169_init_phy(dev, tp);
1945
1946 out:
1947         return rc;
1948
1949 err_out_msi_5:
1950         rtl_disable_msi(pdev, tp);
1951         iounmap(ioaddr);
1952 err_out_free_res_4:
1953         pci_release_regions(pdev);
1954 err_out_mwi_3:
1955         pci_clear_mwi(pdev);
1956 err_out_disable_2:
1957         pci_disable_device(pdev);
1958 err_out_free_dev_1:
1959         free_netdev(dev);
1960         goto out;
1961 }
1962
1963 static void __devexit rtl8169_remove_one(struct pci_dev *pdev)
1964 {
1965         struct net_device *dev = pci_get_drvdata(pdev);
1966         struct rtl8169_private *tp = netdev_priv(dev);
1967
1968         flush_scheduled_work();
1969
1970         unregister_netdev(dev);
1971         rtl_disable_msi(pdev, tp);
1972         rtl8169_release_board(pdev, dev, tp->mmio_addr);
1973         pci_set_drvdata(pdev, NULL);
1974 }
1975
1976 static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
1977                                   struct net_device *dev)
1978 {
1979         unsigned int mtu = dev->mtu;
1980
1981         tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
1982 }
1983
1984 static int rtl8169_open(struct net_device *dev)
1985 {
1986         struct rtl8169_private *tp = netdev_priv(dev);
1987         struct pci_dev *pdev = tp->pci_dev;
1988         int retval = -ENOMEM;
1989
1990
1991         rtl8169_set_rxbufsize(tp, dev);
1992
1993         /*
1994          * Rx and Tx desscriptors needs 256 bytes alignment.
1995          * pci_alloc_consistent provides more.
1996          */
1997         tp->TxDescArray = pci_alloc_consistent(pdev, R8169_TX_RING_BYTES,
1998                                                &tp->TxPhyAddr);
1999         if (!tp->TxDescArray)
2000                 goto out;
2001
2002         tp->RxDescArray = pci_alloc_consistent(pdev, R8169_RX_RING_BYTES,
2003                                                &tp->RxPhyAddr);
2004         if (!tp->RxDescArray)
2005                 goto err_free_tx_0;
2006
2007         retval = rtl8169_init_ring(dev);
2008         if (retval < 0)
2009                 goto err_free_rx_1;
2010
2011         INIT_DELAYED_WORK(&tp->task, NULL);
2012
2013         smp_mb();
2014
2015         retval = request_irq(dev->irq, rtl8169_interrupt,
2016                              (tp->features & RTL_FEATURE_MSI) ? 0 : IRQF_SHARED,
2017                              dev->name, dev);
2018         if (retval < 0)
2019                 goto err_release_ring_2;
2020
2021         napi_enable(&tp->napi);
2022
2023         rtl_hw_start(dev);
2024
2025         rtl8169_request_timer(dev);
2026
2027         rtl8169_check_link_status(dev, tp, tp->mmio_addr);
2028 out:
2029         return retval;
2030
2031 err_release_ring_2:
2032         rtl8169_rx_clear(tp);
2033 err_free_rx_1:
2034         pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
2035                             tp->RxPhyAddr);
2036 err_free_tx_0:
2037         pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
2038                             tp->TxPhyAddr);
2039         goto out;
2040 }
2041
2042 static void rtl8169_hw_reset(void __iomem *ioaddr)
2043 {
2044         /* Disable interrupts */
2045         rtl8169_irq_mask_and_ack(ioaddr);
2046
2047         /* Reset the chipset */
2048         RTL_W8(ChipCmd, CmdReset);
2049
2050         /* PCI commit */
2051         RTL_R8(ChipCmd);
2052 }
2053
2054 static void rtl_set_rx_tx_config_registers(struct rtl8169_private *tp)
2055 {
2056         void __iomem *ioaddr = tp->mmio_addr;
2057         u32 cfg = rtl8169_rx_config;
2058
2059         cfg |= (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
2060         RTL_W32(RxConfig, cfg);
2061
2062         /* Set DMA burst size and Interframe Gap Time */
2063         RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
2064                 (InterFrameGap << TxInterFrameGapShift));
2065 }
2066
2067 static void rtl_hw_start(struct net_device *dev)
2068 {
2069         struct rtl8169_private *tp = netdev_priv(dev);
2070         void __iomem *ioaddr = tp->mmio_addr;
2071         unsigned int i;
2072
2073         /* Soft reset the chip. */
2074         RTL_W8(ChipCmd, CmdReset);
2075
2076         /* Check that the chip has finished the reset. */
2077         for (i = 0; i < 100; i++) {
2078                 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
2079                         break;
2080                 msleep_interruptible(1);
2081         }
2082
2083         tp->hw_start(dev);
2084
2085         netif_start_queue(dev);
2086 }
2087
2088
2089 static void rtl_set_rx_tx_desc_registers(struct rtl8169_private *tp,
2090                                          void __iomem *ioaddr)
2091 {
2092         /*
2093          * Magic spell: some iop3xx ARM board needs the TxDescAddrHigh
2094          * register to be written before TxDescAddrLow to work.
2095          * Switching from MMIO to I/O access fixes the issue as well.
2096          */
2097         RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr) >> 32);
2098         RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr) & DMA_32BIT_MASK);
2099         RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr) >> 32);
2100         RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr) & DMA_32BIT_MASK);
2101 }
2102
2103 static u16 rtl_rw_cpluscmd(void __iomem *ioaddr)
2104 {
2105         u16 cmd;
2106
2107         cmd = RTL_R16(CPlusCmd);
2108         RTL_W16(CPlusCmd, cmd);
2109         return cmd;
2110 }
2111
2112 static void rtl_set_rx_max_size(void __iomem *ioaddr)
2113 {
2114         /* Low hurts. Let's disable the filtering. */
2115         RTL_W16(RxMaxSize, 16383);
2116 }
2117
2118 static void rtl8169_set_magic_reg(void __iomem *ioaddr, unsigned mac_version)
2119 {
2120         struct {
2121                 u32 mac_version;
2122                 u32 clk;
2123                 u32 val;
2124         } cfg2_info [] = {
2125                 { RTL_GIGA_MAC_VER_05, PCI_Clock_33MHz, 0x000fff00 }, // 8110SCd
2126                 { RTL_GIGA_MAC_VER_05, PCI_Clock_66MHz, 0x000fffff },
2127                 { RTL_GIGA_MAC_VER_06, PCI_Clock_33MHz, 0x00ffff00 }, // 8110SCe
2128                 { RTL_GIGA_MAC_VER_06, PCI_Clock_66MHz, 0x00ffffff }
2129         }, *p = cfg2_info;
2130         unsigned int i;
2131         u32 clk;
2132
2133         clk = RTL_R8(Config2) & PCI_Clock_66MHz;
2134         for (i = 0; i < ARRAY_SIZE(cfg2_info); i++, p++) {
2135                 if ((p->mac_version == mac_version) && (p->clk == clk)) {
2136                         RTL_W32(0x7c, p->val);
2137                         break;
2138                 }
2139         }
2140 }
2141
2142 static void rtl_hw_start_8169(struct net_device *dev)
2143 {
2144         struct rtl8169_private *tp = netdev_priv(dev);
2145         void __iomem *ioaddr = tp->mmio_addr;
2146         struct pci_dev *pdev = tp->pci_dev;
2147
2148         if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
2149                 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) | PCIMulRW);
2150                 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x08);
2151         }
2152
2153         RTL_W8(Cfg9346, Cfg9346_Unlock);
2154         if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2155             (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2156             (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2157             (tp->mac_version == RTL_GIGA_MAC_VER_04))
2158                 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2159
2160         RTL_W8(EarlyTxThres, EarlyTxThld);
2161
2162         rtl_set_rx_max_size(ioaddr);
2163
2164         if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2165             (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2166             (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2167             (tp->mac_version == RTL_GIGA_MAC_VER_04))
2168                 rtl_set_rx_tx_config_registers(tp);
2169
2170         tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2171
2172         if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2173             (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
2174                 dprintk("Set MAC Reg C+CR Offset 0xE0. "
2175                         "Bit-3 and bit-14 MUST be 1\n");
2176                 tp->cp_cmd |= (1 << 14);
2177         }
2178
2179         RTL_W16(CPlusCmd, tp->cp_cmd);
2180
2181         rtl8169_set_magic_reg(ioaddr, tp->mac_version);
2182
2183         /*
2184          * Undocumented corner. Supposedly:
2185          * (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
2186          */
2187         RTL_W16(IntrMitigate, 0x0000);
2188
2189         rtl_set_rx_tx_desc_registers(tp, ioaddr);
2190
2191         if ((tp->mac_version != RTL_GIGA_MAC_VER_01) &&
2192             (tp->mac_version != RTL_GIGA_MAC_VER_02) &&
2193             (tp->mac_version != RTL_GIGA_MAC_VER_03) &&
2194             (tp->mac_version != RTL_GIGA_MAC_VER_04)) {
2195                 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2196                 rtl_set_rx_tx_config_registers(tp);
2197         }
2198
2199         RTL_W8(Cfg9346, Cfg9346_Lock);
2200
2201         /* Initially a 10 us delay. Turned it into a PCI commit. - FR */
2202         RTL_R8(IntrMask);
2203
2204         RTL_W32(RxMissed, 0);
2205
2206         rtl_set_rx_mode(dev);
2207
2208         /* no early-rx interrupts */
2209         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2210
2211         /* Enable all known interrupts by setting the interrupt mask. */
2212         RTL_W16(IntrMask, tp->intr_event);
2213 }
2214
2215 static void rtl_tx_performance_tweak(struct pci_dev *pdev, u16 force)
2216 {
2217         struct net_device *dev = pci_get_drvdata(pdev);
2218         struct rtl8169_private *tp = netdev_priv(dev);
2219         int cap = tp->pcie_cap;
2220
2221         if (cap) {
2222                 u16 ctl;
2223
2224                 pci_read_config_word(pdev, cap + PCI_EXP_DEVCTL, &ctl);
2225                 ctl = (ctl & ~PCI_EXP_DEVCTL_READRQ) | force;
2226                 pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL, ctl);
2227         }
2228 }
2229
2230 static void rtl_csi_access_enable(void __iomem *ioaddr)
2231 {
2232         u32 csi;
2233
2234         csi = rtl_csi_read(ioaddr, 0x070c) & 0x00ffffff;
2235         rtl_csi_write(ioaddr, 0x070c, csi | 0x27000000);
2236 }
2237
2238 struct ephy_info {
2239         unsigned int offset;
2240         u16 mask;
2241         u16 bits;
2242 };
2243
2244 static void rtl_ephy_init(void __iomem *ioaddr, struct ephy_info *e, int len)
2245 {
2246         u16 w;
2247
2248         while (len-- > 0) {
2249                 w = (rtl_ephy_read(ioaddr, e->offset) & ~e->mask) | e->bits;
2250                 rtl_ephy_write(ioaddr, e->offset, w);
2251                 e++;
2252         }
2253 }
2254
2255 static void rtl_hw_start_8168(struct net_device *dev)
2256 {
2257         struct rtl8169_private *tp = netdev_priv(dev);
2258         void __iomem *ioaddr = tp->mmio_addr;
2259         struct pci_dev *pdev = tp->pci_dev;
2260
2261         RTL_W8(Cfg9346, Cfg9346_Unlock);
2262
2263         RTL_W8(EarlyTxThres, EarlyTxThld);
2264
2265         rtl_set_rx_max_size(ioaddr);
2266
2267         rtl_set_rx_tx_config_registers(tp);
2268
2269         tp->cp_cmd |= RTL_R16(CPlusCmd) | PktCntrDisable | INTT_1;
2270
2271         RTL_W16(CPlusCmd, tp->cp_cmd);
2272
2273         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2274
2275         RTL_W16(IntrMitigate, 0x5151);
2276
2277         /* Work around for RxFIFO overflow. */
2278         if (tp->mac_version == RTL_GIGA_MAC_VER_11) {
2279                 tp->intr_event |= RxFIFOOver | PCSTimeout;
2280                 tp->intr_event &= ~RxOverflow;
2281         }
2282
2283         rtl_set_rx_tx_desc_registers(tp, ioaddr);
2284
2285         RTL_W8(Cfg9346, Cfg9346_Lock);
2286
2287         RTL_R8(IntrMask);
2288
2289         rtl_set_rx_mode(dev);
2290
2291         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2292
2293         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2294
2295         RTL_W16(IntrMask, tp->intr_event);
2296 }
2297
2298 #define R810X_CPCMD_QUIRK_MASK (\
2299         EnableBist | \
2300         Mac_dbgo_oe | \
2301         Force_half_dup | \
2302         Force_half_dup | \
2303         Force_txflow_en | \
2304         Cxpl_dbg_sel | \
2305         ASF | \
2306         PktCntrDisable | \
2307         PCIDAC | \
2308         PCIMulRW)
2309
2310 static void rtl_hw_start_8102e_1(void __iomem *ioaddr, struct pci_dev *pdev)
2311 {
2312         static struct ephy_info e_info_8102e_1[] = {
2313                 { 0x01, 0, 0x6e65 },
2314                 { 0x02, 0, 0x091f },
2315                 { 0x03, 0, 0xc2f9 },
2316                 { 0x06, 0, 0xafb5 },
2317                 { 0x07, 0, 0x0e00 },
2318                 { 0x19, 0, 0xec80 },
2319                 { 0x01, 0, 0x2e65 },
2320                 { 0x01, 0, 0x6e65 }
2321         };
2322         u8 cfg1;
2323
2324         rtl_csi_access_enable(ioaddr);
2325
2326         RTL_W8(DBG_REG, FIX_NAK_1);
2327
2328         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2329
2330         RTL_W8(Config1,
2331                LEDS1 | LEDS0 | Speed_down | MEMMAP | IOMAP | VPD | PMEnable);
2332         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2333
2334         cfg1 = RTL_R8(Config1);
2335         if ((cfg1 & LEDS0) && (cfg1 & LEDS1))
2336                 RTL_W8(Config1, cfg1 & ~LEDS0);
2337
2338         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2339
2340         rtl_ephy_init(ioaddr, e_info_8102e_1, ARRAY_SIZE(e_info_8102e_1));
2341 }
2342
2343 static void rtl_hw_start_8102e_2(void __iomem *ioaddr, struct pci_dev *pdev)
2344 {
2345         rtl_csi_access_enable(ioaddr);
2346
2347         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2348
2349         RTL_W8(Config1, MEMMAP | IOMAP | VPD | PMEnable);
2350         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2351
2352         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2353 }
2354
2355 static void rtl_hw_start_8102e_3(void __iomem *ioaddr, struct pci_dev *pdev)
2356 {
2357         rtl_hw_start_8102e_2(ioaddr, pdev);
2358
2359         rtl_ephy_write(ioaddr, 0x03, 0xc2f9);
2360 }
2361
2362 static void rtl_hw_start_8101(struct net_device *dev)
2363 {
2364         struct rtl8169_private *tp = netdev_priv(dev);
2365         void __iomem *ioaddr = tp->mmio_addr;
2366         struct pci_dev *pdev = tp->pci_dev;
2367
2368         if ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
2369             (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
2370                 int cap = tp->pcie_cap;
2371
2372                 if (cap) {
2373                         pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL,
2374                                               PCI_EXP_DEVCTL_NOSNOOP_EN);
2375                 }
2376         }
2377
2378         switch (tp->mac_version) {
2379         case RTL_GIGA_MAC_VER_07:
2380                 rtl_hw_start_8102e_1(ioaddr, pdev);
2381                 break;
2382
2383         case RTL_GIGA_MAC_VER_08:
2384                 rtl_hw_start_8102e_3(ioaddr, pdev);
2385                 break;
2386
2387         case RTL_GIGA_MAC_VER_09:
2388                 rtl_hw_start_8102e_2(ioaddr, pdev);
2389                 break;
2390         }
2391
2392         RTL_W8(Cfg9346, Cfg9346_Unlock);
2393
2394         RTL_W8(EarlyTxThres, EarlyTxThld);
2395
2396         rtl_set_rx_max_size(ioaddr);
2397
2398         tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2399
2400         RTL_W16(CPlusCmd, tp->cp_cmd);
2401
2402         RTL_W16(IntrMitigate, 0x0000);
2403
2404         rtl_set_rx_tx_desc_registers(tp, ioaddr);
2405
2406         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2407         rtl_set_rx_tx_config_registers(tp);
2408
2409         RTL_W8(Cfg9346, Cfg9346_Lock);
2410
2411         RTL_R8(IntrMask);
2412
2413         rtl_set_rx_mode(dev);
2414
2415         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2416
2417         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xf000);
2418
2419         RTL_W16(IntrMask, tp->intr_event);
2420 }
2421
2422 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
2423 {
2424         struct rtl8169_private *tp = netdev_priv(dev);
2425         int ret = 0;
2426
2427         if (new_mtu < ETH_ZLEN || new_mtu > SafeMtu)
2428                 return -EINVAL;
2429
2430         dev->mtu = new_mtu;
2431
2432         if (!netif_running(dev))
2433                 goto out;
2434
2435         rtl8169_down(dev);
2436
2437         rtl8169_set_rxbufsize(tp, dev);
2438
2439         ret = rtl8169_init_ring(dev);
2440         if (ret < 0)
2441                 goto out;
2442
2443         napi_enable(&tp->napi);
2444
2445         rtl_hw_start(dev);
2446
2447         rtl8169_request_timer(dev);
2448
2449 out:
2450         return ret;
2451 }
2452
2453 static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
2454 {
2455         desc->addr = cpu_to_le64(0x0badbadbadbadbadull);
2456         desc->opts1 &= ~cpu_to_le32(DescOwn | RsvdMask);
2457 }
2458
2459 static void rtl8169_free_rx_skb(struct rtl8169_private *tp,
2460                                 struct sk_buff **sk_buff, struct RxDesc *desc)
2461 {
2462         struct pci_dev *pdev = tp->pci_dev;
2463
2464         pci_unmap_single(pdev, le64_to_cpu(desc->addr), tp->rx_buf_sz,
2465                          PCI_DMA_FROMDEVICE);
2466         dev_kfree_skb(*sk_buff);
2467         *sk_buff = NULL;
2468         rtl8169_make_unusable_by_asic(desc);
2469 }
2470
2471 static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
2472 {
2473         u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
2474
2475         desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
2476 }
2477
2478 static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
2479                                        u32 rx_buf_sz)
2480 {
2481         desc->addr = cpu_to_le64(mapping);
2482         wmb();
2483         rtl8169_mark_to_asic(desc, rx_buf_sz);
2484 }
2485
2486 static struct sk_buff *rtl8169_alloc_rx_skb(struct pci_dev *pdev,
2487                                             struct net_device *dev,
2488                                             struct RxDesc *desc, int rx_buf_sz,
2489                                             unsigned int align)
2490 {
2491         struct sk_buff *skb;
2492         dma_addr_t mapping;
2493         unsigned int pad;
2494
2495         pad = align ? align : NET_IP_ALIGN;
2496
2497         skb = netdev_alloc_skb(dev, rx_buf_sz + pad);
2498         if (!skb)
2499                 goto err_out;
2500
2501         skb_reserve(skb, align ? ((pad - 1) & (unsigned long)skb->data) : pad);
2502
2503         mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
2504                                  PCI_DMA_FROMDEVICE);
2505
2506         rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
2507 out:
2508         return skb;
2509
2510 err_out:
2511         rtl8169_make_unusable_by_asic(desc);
2512         goto out;
2513 }
2514
2515 static void rtl8169_rx_clear(struct rtl8169_private *tp)
2516 {
2517         unsigned int i;
2518
2519         for (i = 0; i < NUM_RX_DESC; i++) {
2520                 if (tp->Rx_skbuff[i]) {
2521                         rtl8169_free_rx_skb(tp, tp->Rx_skbuff + i,
2522                                             tp->RxDescArray + i);
2523                 }
2524         }
2525 }
2526
2527 static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
2528                            u32 start, u32 end)
2529 {
2530         u32 cur;
2531
2532         for (cur = start; end - cur != 0; cur++) {
2533                 struct sk_buff *skb;
2534                 unsigned int i = cur % NUM_RX_DESC;
2535
2536                 WARN_ON((s32)(end - cur) < 0);
2537
2538                 if (tp->Rx_skbuff[i])
2539                         continue;
2540
2541                 skb = rtl8169_alloc_rx_skb(tp->pci_dev, dev,
2542                                            tp->RxDescArray + i,
2543                                            tp->rx_buf_sz, tp->align);
2544                 if (!skb)
2545                         break;
2546
2547                 tp->Rx_skbuff[i] = skb;
2548         }
2549         return cur - start;
2550 }
2551
2552 static inline void rtl8169_mark_as_last_descriptor(struct RxDesc *desc)
2553 {
2554         desc->opts1 |= cpu_to_le32(RingEnd);
2555 }
2556
2557 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
2558 {
2559         tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
2560 }
2561
2562 static int rtl8169_init_ring(struct net_device *dev)
2563 {
2564         struct rtl8169_private *tp = netdev_priv(dev);
2565
2566         rtl8169_init_ring_indexes(tp);
2567
2568         memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
2569         memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
2570
2571         if (rtl8169_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
2572                 goto err_out;
2573
2574         rtl8169_mark_as_last_descriptor(tp->RxDescArray + NUM_RX_DESC - 1);
2575
2576         return 0;
2577
2578 err_out:
2579         rtl8169_rx_clear(tp);
2580         return -ENOMEM;
2581 }
2582
2583 static void rtl8169_unmap_tx_skb(struct pci_dev *pdev, struct ring_info *tx_skb,
2584                                  struct TxDesc *desc)
2585 {
2586         unsigned int len = tx_skb->len;
2587
2588         pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
2589         desc->opts1 = 0x00;
2590         desc->opts2 = 0x00;
2591         desc->addr = 0x00;
2592         tx_skb->len = 0;
2593 }
2594
2595 static void rtl8169_tx_clear(struct rtl8169_private *tp)
2596 {
2597         unsigned int i;
2598
2599         for (i = tp->dirty_tx; i < tp->dirty_tx + NUM_TX_DESC; i++) {
2600                 unsigned int entry = i % NUM_TX_DESC;
2601                 struct ring_info *tx_skb = tp->tx_skb + entry;
2602                 unsigned int len = tx_skb->len;
2603
2604                 if (len) {
2605                         struct sk_buff *skb = tx_skb->skb;
2606
2607                         rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb,
2608                                              tp->TxDescArray + entry);
2609                         if (skb) {
2610                                 dev_kfree_skb(skb);
2611                                 tx_skb->skb = NULL;
2612                         }
2613                         tp->dev->stats.tx_dropped++;
2614                 }
2615         }
2616         tp->cur_tx = tp->dirty_tx = 0;
2617 }
2618
2619 static void rtl8169_schedule_work(struct net_device *dev, work_func_t task)
2620 {
2621         struct rtl8169_private *tp = netdev_priv(dev);
2622
2623         PREPARE_DELAYED_WORK(&tp->task, task);
2624         schedule_delayed_work(&tp->task, 4);
2625 }
2626
2627 static void rtl8169_wait_for_quiescence(struct net_device *dev)
2628 {
2629         struct rtl8169_private *tp = netdev_priv(dev);
2630         void __iomem *ioaddr = tp->mmio_addr;
2631
2632         synchronize_irq(dev->irq);
2633
2634         /* Wait for any pending NAPI task to complete */
2635         napi_disable(&tp->napi);
2636
2637         rtl8169_irq_mask_and_ack(ioaddr);
2638
2639         tp->intr_mask = 0xffff;
2640         RTL_W16(IntrMask, tp->intr_event);
2641         napi_enable(&tp->napi);
2642 }
2643
2644 static void rtl8169_reinit_task(struct work_struct *work)
2645 {
2646         struct rtl8169_private *tp =
2647                 container_of(work, struct rtl8169_private, task.work);
2648         struct net_device *dev = tp->dev;
2649         int ret;
2650
2651         rtnl_lock();
2652
2653         if (!netif_running(dev))
2654                 goto out_unlock;
2655
2656         rtl8169_wait_for_quiescence(dev);
2657         rtl8169_close(dev);
2658
2659         ret = rtl8169_open(dev);
2660         if (unlikely(ret < 0)) {
2661                 if (net_ratelimit() && netif_msg_drv(tp)) {
2662                         printk(KERN_ERR PFX "%s: reinit failure (status = %d)."
2663                                " Rescheduling.\n", dev->name, ret);
2664                 }
2665                 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2666         }
2667
2668 out_unlock:
2669         rtnl_unlock();
2670 }
2671
2672 static void rtl8169_reset_task(struct work_struct *work)
2673 {
2674         struct rtl8169_private *tp =
2675                 container_of(work, struct rtl8169_private, task.work);
2676         struct net_device *dev = tp->dev;
2677
2678         rtnl_lock();
2679
2680         if (!netif_running(dev))
2681                 goto out_unlock;
2682
2683         rtl8169_wait_for_quiescence(dev);
2684
2685         rtl8169_rx_interrupt(dev, tp, tp->mmio_addr, ~(u32)0);
2686         rtl8169_tx_clear(tp);
2687
2688         if (tp->dirty_rx == tp->cur_rx) {
2689                 rtl8169_init_ring_indexes(tp);
2690                 rtl_hw_start(dev);
2691                 netif_wake_queue(dev);
2692                 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
2693         } else {
2694                 if (net_ratelimit() && netif_msg_intr(tp)) {
2695                         printk(KERN_EMERG PFX "%s: Rx buffers shortage\n",
2696                                dev->name);
2697                 }
2698                 rtl8169_schedule_work(dev, rtl8169_reset_task);
2699         }
2700
2701 out_unlock:
2702         rtnl_unlock();
2703 }
2704
2705 static void rtl8169_tx_timeout(struct net_device *dev)
2706 {
2707         struct rtl8169_private *tp = netdev_priv(dev);
2708
2709         rtl8169_hw_reset(tp->mmio_addr);
2710
2711         /* Let's wait a bit while any (async) irq lands on */
2712         rtl8169_schedule_work(dev, rtl8169_reset_task);
2713 }
2714
2715 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
2716                               u32 opts1)
2717 {
2718         struct skb_shared_info *info = skb_shinfo(skb);
2719         unsigned int cur_frag, entry;
2720         struct TxDesc * uninitialized_var(txd);
2721
2722         entry = tp->cur_tx;
2723         for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
2724                 skb_frag_t *frag = info->frags + cur_frag;
2725                 dma_addr_t mapping;
2726                 u32 status, len;
2727                 void *addr;
2728
2729                 entry = (entry + 1) % NUM_TX_DESC;
2730
2731                 txd = tp->TxDescArray + entry;
2732                 len = frag->size;
2733                 addr = ((void *) page_address(frag->page)) + frag->page_offset;
2734                 mapping = pci_map_single(tp->pci_dev, addr, len, PCI_DMA_TODEVICE);
2735
2736                 /* anti gcc 2.95.3 bugware (sic) */
2737                 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2738
2739                 txd->opts1 = cpu_to_le32(status);
2740                 txd->addr = cpu_to_le64(mapping);
2741
2742                 tp->tx_skb[entry].len = len;
2743         }
2744
2745         if (cur_frag) {
2746                 tp->tx_skb[entry].skb = skb;
2747                 txd->opts1 |= cpu_to_le32(LastFrag);
2748         }
2749
2750         return cur_frag;
2751 }
2752
2753 static inline u32 rtl8169_tso_csum(struct sk_buff *skb, struct net_device *dev)
2754 {
2755         if (dev->features & NETIF_F_TSO) {
2756                 u32 mss = skb_shinfo(skb)->gso_size;
2757
2758                 if (mss)
2759                         return LargeSend | ((mss & MSSMask) << MSSShift);
2760         }
2761         if (skb->ip_summed == CHECKSUM_PARTIAL) {
2762                 const struct iphdr *ip = ip_hdr(skb);
2763
2764                 if (ip->protocol == IPPROTO_TCP)
2765                         return IPCS | TCPCS;
2766                 else if (ip->protocol == IPPROTO_UDP)
2767                         return IPCS | UDPCS;
2768                 WARN_ON(1);     /* we need a WARN() */
2769         }
2770         return 0;
2771 }
2772
2773 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev)
2774 {
2775         struct rtl8169_private *tp = netdev_priv(dev);
2776         unsigned int frags, entry = tp->cur_tx % NUM_TX_DESC;
2777         struct TxDesc *txd = tp->TxDescArray + entry;
2778         void __iomem *ioaddr = tp->mmio_addr;
2779         dma_addr_t mapping;
2780         u32 status, len;
2781         u32 opts1;
2782         int ret = NETDEV_TX_OK;
2783
2784         if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) {
2785                 if (netif_msg_drv(tp)) {
2786                         printk(KERN_ERR
2787                                "%s: BUG! Tx Ring full when queue awake!\n",
2788                                dev->name);
2789                 }
2790                 goto err_stop;
2791         }
2792
2793         if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
2794                 goto err_stop;
2795
2796         opts1 = DescOwn | rtl8169_tso_csum(skb, dev);
2797
2798         frags = rtl8169_xmit_frags(tp, skb, opts1);
2799         if (frags) {
2800                 len = skb_headlen(skb);
2801                 opts1 |= FirstFrag;
2802         } else {
2803                 len = skb->len;
2804
2805                 if (unlikely(len < ETH_ZLEN)) {
2806                         if (skb_padto(skb, ETH_ZLEN))
2807                                 goto err_update_stats;
2808                         len = ETH_ZLEN;
2809                 }
2810
2811                 opts1 |= FirstFrag | LastFrag;
2812                 tp->tx_skb[entry].skb = skb;
2813         }
2814
2815         mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
2816
2817         tp->tx_skb[entry].len = len;
2818         txd->addr = cpu_to_le64(mapping);
2819         txd->opts2 = cpu_to_le32(rtl8169_tx_vlan_tag(tp, skb));
2820
2821         wmb();
2822
2823         /* anti gcc 2.95.3 bugware (sic) */
2824         status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2825         txd->opts1 = cpu_to_le32(status);
2826
2827         dev->trans_start = jiffies;
2828
2829         tp->cur_tx += frags + 1;
2830
2831         smp_wmb();
2832
2833         RTL_W8(TxPoll, NPQ);    /* set polling bit */
2834
2835         if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
2836                 netif_stop_queue(dev);
2837                 smp_rmb();
2838                 if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
2839                         netif_wake_queue(dev);
2840         }
2841
2842 out:
2843         return ret;
2844
2845 err_stop:
2846         netif_stop_queue(dev);
2847         ret = NETDEV_TX_BUSY;
2848 err_update_stats:
2849         dev->stats.tx_dropped++;
2850         goto out;
2851 }
2852
2853 static void rtl8169_pcierr_interrupt(struct net_device *dev)
2854 {
2855         struct rtl8169_private *tp = netdev_priv(dev);
2856         struct pci_dev *pdev = tp->pci_dev;
2857         void __iomem *ioaddr = tp->mmio_addr;
2858         u16 pci_status, pci_cmd;
2859
2860         pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
2861         pci_read_config_word(pdev, PCI_STATUS, &pci_status);
2862
2863         if (netif_msg_intr(tp)) {
2864                 printk(KERN_ERR
2865                        "%s: PCI error (cmd = 0x%04x, status = 0x%04x).\n",
2866                        dev->name, pci_cmd, pci_status);
2867         }
2868
2869         /*
2870          * The recovery sequence below admits a very elaborated explanation:
2871          * - it seems to work;
2872          * - I did not see what else could be done;
2873          * - it makes iop3xx happy.
2874          *
2875          * Feel free to adjust to your needs.
2876          */
2877         if (pdev->broken_parity_status)
2878                 pci_cmd &= ~PCI_COMMAND_PARITY;
2879         else
2880                 pci_cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY;
2881
2882         pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
2883
2884         pci_write_config_word(pdev, PCI_STATUS,
2885                 pci_status & (PCI_STATUS_DETECTED_PARITY |
2886                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
2887                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
2888
2889         /* The infamous DAC f*ckup only happens at boot time */
2890         if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
2891                 if (netif_msg_intr(tp))
2892                         printk(KERN_INFO "%s: disabling PCI DAC.\n", dev->name);
2893                 tp->cp_cmd &= ~PCIDAC;
2894                 RTL_W16(CPlusCmd, tp->cp_cmd);
2895                 dev->features &= ~NETIF_F_HIGHDMA;
2896         }
2897
2898         rtl8169_hw_reset(ioaddr);
2899
2900         rtl8169_schedule_work(dev, rtl8169_reinit_task);
2901 }
2902
2903 static void rtl8169_tx_interrupt(struct net_device *dev,
2904                                  struct rtl8169_private *tp,
2905                                  void __iomem *ioaddr)
2906 {
2907         unsigned int dirty_tx, tx_left;
2908
2909         dirty_tx = tp->dirty_tx;
2910         smp_rmb();
2911         tx_left = tp->cur_tx - dirty_tx;
2912
2913         while (tx_left > 0) {
2914                 unsigned int entry = dirty_tx % NUM_TX_DESC;
2915                 struct ring_info *tx_skb = tp->tx_skb + entry;
2916                 u32 len = tx_skb->len;
2917                 u32 status;
2918
2919                 rmb();
2920                 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
2921                 if (status & DescOwn)
2922                         break;
2923
2924                 dev->stats.tx_bytes += len;
2925                 dev->stats.tx_packets++;
2926
2927                 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb, tp->TxDescArray + entry);
2928
2929                 if (status & LastFrag) {
2930                         dev_kfree_skb_irq(tx_skb->skb);
2931                         tx_skb->skb = NULL;
2932                 }
2933                 dirty_tx++;
2934                 tx_left--;
2935         }
2936
2937         if (tp->dirty_tx != dirty_tx) {
2938                 tp->dirty_tx = dirty_tx;
2939                 smp_wmb();
2940                 if (netif_queue_stopped(dev) &&
2941                     (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
2942                         netif_wake_queue(dev);
2943                 }
2944                 /*
2945                  * 8168 hack: TxPoll requests are lost when the Tx packets are
2946                  * too close. Let's kick an extra TxPoll request when a burst
2947                  * of start_xmit activity is detected (if it is not detected,
2948                  * it is slow enough). -- FR
2949                  */
2950                 smp_rmb();
2951                 if (tp->cur_tx != dirty_tx)
2952                         RTL_W8(TxPoll, NPQ);
2953         }
2954 }
2955
2956 static inline int rtl8169_fragmented_frame(u32 status)
2957 {
2958         return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
2959 }
2960
2961 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
2962 {
2963         u32 opts1 = le32_to_cpu(desc->opts1);
2964         u32 status = opts1 & RxProtoMask;
2965
2966         if (((status == RxProtoTCP) && !(opts1 & TCPFail)) ||
2967             ((status == RxProtoUDP) && !(opts1 & UDPFail)) ||
2968             ((status == RxProtoIP) && !(opts1 & IPFail)))
2969                 skb->ip_summed = CHECKSUM_UNNECESSARY;
2970         else
2971                 skb->ip_summed = CHECKSUM_NONE;
2972 }
2973
2974 static inline bool rtl8169_try_rx_copy(struct sk_buff **sk_buff,
2975                                        struct rtl8169_private *tp, int pkt_size,
2976                                        dma_addr_t addr)
2977 {
2978         struct sk_buff *skb;
2979         bool done = false;
2980
2981         if (pkt_size >= rx_copybreak)
2982                 goto out;
2983
2984         skb = netdev_alloc_skb(tp->dev, pkt_size + NET_IP_ALIGN);
2985         if (!skb)
2986                 goto out;
2987
2988         pci_dma_sync_single_for_cpu(tp->pci_dev, addr, pkt_size,
2989                                     PCI_DMA_FROMDEVICE);
2990         skb_reserve(skb, NET_IP_ALIGN);
2991         skb_copy_from_linear_data(*sk_buff, skb->data, pkt_size);
2992         *sk_buff = skb;
2993         done = true;
2994 out:
2995         return done;
2996 }
2997
2998 static int rtl8169_rx_interrupt(struct net_device *dev,
2999                                 struct rtl8169_private *tp,
3000                                 void __iomem *ioaddr, u32 budget)
3001 {
3002         unsigned int cur_rx, rx_left;
3003         unsigned int delta, count;
3004
3005         cur_rx = tp->cur_rx;
3006         rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
3007         rx_left = min(rx_left, budget);
3008
3009         for (; rx_left > 0; rx_left--, cur_rx++) {
3010                 unsigned int entry = cur_rx % NUM_RX_DESC;
3011                 struct RxDesc *desc = tp->RxDescArray + entry;
3012                 u32 status;
3013
3014                 rmb();
3015                 status = le32_to_cpu(desc->opts1);
3016
3017                 if (status & DescOwn)
3018                         break;
3019                 if (unlikely(status & RxRES)) {
3020                         if (netif_msg_rx_err(tp)) {
3021                                 printk(KERN_INFO
3022                                        "%s: Rx ERROR. status = %08x\n",
3023                                        dev->name, status);
3024                         }
3025                         dev->stats.rx_errors++;
3026                         if (status & (RxRWT | RxRUNT))
3027                                 dev->stats.rx_length_errors++;
3028                         if (status & RxCRC)
3029                                 dev->stats.rx_crc_errors++;
3030                         if (status & RxFOVF) {
3031                                 rtl8169_schedule_work(dev, rtl8169_reset_task);
3032                                 dev->stats.rx_fifo_errors++;
3033                         }
3034                         rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3035                 } else {
3036                         struct sk_buff *skb = tp->Rx_skbuff[entry];
3037                         dma_addr_t addr = le64_to_cpu(desc->addr);
3038                         int pkt_size = (status & 0x00001FFF) - 4;
3039                         struct pci_dev *pdev = tp->pci_dev;
3040
3041                         /*
3042                          * The driver does not support incoming fragmented
3043                          * frames. They are seen as a symptom of over-mtu
3044                          * sized frames.
3045                          */
3046                         if (unlikely(rtl8169_fragmented_frame(status))) {
3047                                 dev->stats.rx_dropped++;
3048                                 dev->stats.rx_length_errors++;
3049                                 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3050                                 continue;
3051                         }
3052
3053                         rtl8169_rx_csum(skb, desc);
3054
3055                         if (rtl8169_try_rx_copy(&skb, tp, pkt_size, addr)) {
3056                                 pci_dma_sync_single_for_device(pdev, addr,
3057                                         pkt_size, PCI_DMA_FROMDEVICE);
3058                                 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3059                         } else {
3060                                 pci_unmap_single(pdev, addr, tp->rx_buf_sz,
3061                                                  PCI_DMA_FROMDEVICE);
3062                                 tp->Rx_skbuff[entry] = NULL;
3063                         }
3064
3065                         skb_put(skb, pkt_size);
3066                         skb->protocol = eth_type_trans(skb, dev);
3067
3068                         if (rtl8169_rx_vlan_skb(tp, desc, skb) < 0)
3069                                 netif_receive_skb(skb);
3070
3071                         dev->last_rx = jiffies;
3072                         dev->stats.rx_bytes += pkt_size;
3073                         dev->stats.rx_packets++;
3074                 }
3075
3076                 /* Work around for AMD plateform. */
3077                 if ((desc->opts2 & cpu_to_le32(0xfffe000)) &&
3078                     (tp->mac_version == RTL_GIGA_MAC_VER_05)) {
3079                         desc->opts2 = 0;
3080                         cur_rx++;
3081                 }
3082         }
3083
3084         count = cur_rx - tp->cur_rx;
3085         tp->cur_rx = cur_rx;
3086
3087         delta = rtl8169_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
3088         if (!delta && count && netif_msg_intr(tp))
3089                 printk(KERN_INFO "%s: no Rx buffer allocated\n", dev->name);
3090         tp->dirty_rx += delta;
3091
3092         /*
3093          * FIXME: until there is periodic timer to try and refill the ring,
3094          * a temporary shortage may definitely kill the Rx process.
3095          * - disable the asic to try and avoid an overflow and kick it again
3096          *   after refill ?
3097          * - how do others driver handle this condition (Uh oh...).
3098          */
3099         if ((tp->dirty_rx + NUM_RX_DESC == tp->cur_rx) && netif_msg_intr(tp))
3100                 printk(KERN_EMERG "%s: Rx buffers exhausted\n", dev->name);
3101
3102         return count;
3103 }
3104
3105 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
3106 {
3107         struct net_device *dev = dev_instance;
3108         struct rtl8169_private *tp = netdev_priv(dev);
3109         void __iomem *ioaddr = tp->mmio_addr;
3110         int handled = 0;
3111         int status;
3112
3113         status = RTL_R16(IntrStatus);
3114
3115         /* hotplug/major error/no more work/shared irq */
3116         if ((status == 0xffff) || !status)
3117                 goto out;
3118
3119         handled = 1;
3120
3121         if (unlikely(!netif_running(dev))) {
3122                 rtl8169_asic_down(ioaddr);
3123                 goto out;
3124         }
3125
3126         status &= tp->intr_mask;
3127         RTL_W16(IntrStatus,
3128                 (status & RxFIFOOver) ? (status | RxOverflow) : status);
3129
3130         if (!(status & tp->intr_event))
3131                 goto out;
3132
3133         /* Work around for rx fifo overflow */
3134         if (unlikely(status & RxFIFOOver) &&
3135             (tp->mac_version == RTL_GIGA_MAC_VER_11)) {
3136                 netif_stop_queue(dev);
3137                 rtl8169_tx_timeout(dev);
3138                 goto out;
3139         }
3140
3141         if (unlikely(status & SYSErr)) {
3142                 rtl8169_pcierr_interrupt(dev);
3143                 goto out;
3144         }
3145
3146         if (status & LinkChg)
3147                 rtl8169_check_link_status(dev, tp, ioaddr);
3148
3149         if (status & tp->napi_event) {
3150                 RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event);
3151                 tp->intr_mask = ~tp->napi_event;
3152
3153                 if (likely(netif_rx_schedule_prep(dev, &tp->napi)))
3154                         __netif_rx_schedule(dev, &tp->napi);
3155                 else if (netif_msg_intr(tp)) {
3156                         printk(KERN_INFO "%s: interrupt %04x in poll\n",
3157                                dev->name, status);
3158                 }
3159         }
3160 out:
3161         return IRQ_RETVAL(handled);
3162 }
3163
3164 static int rtl8169_poll(struct napi_struct *napi, int budget)
3165 {
3166         struct rtl8169_private *tp = container_of(napi, struct rtl8169_private, napi);
3167         struct net_device *dev = tp->dev;
3168         void __iomem *ioaddr = tp->mmio_addr;
3169         int work_done;
3170
3171         work_done = rtl8169_rx_interrupt(dev, tp, ioaddr, (u32) budget);
3172         rtl8169_tx_interrupt(dev, tp, ioaddr);
3173
3174         if (work_done < budget) {
3175                 netif_rx_complete(dev, napi);
3176                 tp->intr_mask = 0xffff;
3177                 /*
3178                  * 20040426: the barrier is not strictly required but the
3179                  * behavior of the irq handler could be less predictable
3180                  * without it. Btw, the lack of flush for the posted pci
3181                  * write is safe - FR
3182                  */
3183                 smp_wmb();
3184                 RTL_W16(IntrMask, tp->intr_event);
3185         }
3186
3187         return work_done;
3188 }
3189
3190 static void rtl8169_rx_missed(struct net_device *dev, void __iomem *ioaddr)
3191 {
3192         struct rtl8169_private *tp = netdev_priv(dev);
3193
3194         if (tp->mac_version > RTL_GIGA_MAC_VER_06)
3195                 return;
3196
3197         dev->stats.rx_missed_errors += (RTL_R32(RxMissed) & 0xffffff);
3198         RTL_W32(RxMissed, 0);
3199 }
3200
3201 static void rtl8169_down(struct net_device *dev)
3202 {
3203         struct rtl8169_private *tp = netdev_priv(dev);
3204         void __iomem *ioaddr = tp->mmio_addr;
3205         unsigned int intrmask;
3206
3207         rtl8169_delete_timer(dev);
3208
3209         netif_stop_queue(dev);
3210
3211         napi_disable(&tp->napi);
3212
3213 core_down:
3214         spin_lock_irq(&tp->lock);
3215
3216         rtl8169_asic_down(ioaddr);
3217
3218         rtl8169_rx_missed(dev, ioaddr);
3219
3220         spin_unlock_irq(&tp->lock);
3221
3222         synchronize_irq(dev->irq);
3223
3224         /* Give a racing hard_start_xmit a few cycles to complete. */
3225         synchronize_sched();  /* FIXME: should this be synchronize_irq()? */
3226
3227         /*
3228          * And now for the 50k$ question: are IRQ disabled or not ?
3229          *
3230          * Two paths lead here:
3231          * 1) dev->close
3232          *    -> netif_running() is available to sync the current code and the
3233          *       IRQ handler. See rtl8169_interrupt for details.
3234          * 2) dev->change_mtu
3235          *    -> rtl8169_poll can not be issued again and re-enable the
3236          *       interruptions. Let's simply issue the IRQ down sequence again.
3237          *
3238          * No loop if hotpluged or major error (0xffff).
3239          */
3240         intrmask = RTL_R16(IntrMask);
3241         if (intrmask && (intrmask != 0xffff))
3242                 goto core_down;
3243
3244         rtl8169_tx_clear(tp);
3245
3246         rtl8169_rx_clear(tp);
3247 }
3248
3249 static int rtl8169_close(struct net_device *dev)
3250 {
3251         struct rtl8169_private *tp = netdev_priv(dev);
3252         struct pci_dev *pdev = tp->pci_dev;
3253
3254         rtl8169_down(dev);
3255
3256         free_irq(dev->irq, dev);
3257
3258         pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
3259                             tp->RxPhyAddr);
3260         pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
3261                             tp->TxPhyAddr);
3262         tp->TxDescArray = NULL;
3263         tp->RxDescArray = NULL;
3264
3265         return 0;
3266 }
3267
3268 static void rtl_set_rx_mode(struct net_device *dev)
3269 {
3270         struct rtl8169_private *tp = netdev_priv(dev);
3271         void __iomem *ioaddr = tp->mmio_addr;
3272         unsigned long flags;
3273         u32 mc_filter[2];       /* Multicast hash filter */
3274         int rx_mode;
3275         u32 tmp = 0;
3276
3277         if (dev->flags & IFF_PROMISC) {
3278                 /* Unconditionally log net taps. */
3279                 if (netif_msg_link(tp)) {
3280                         printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
3281                                dev->name);
3282                 }
3283                 rx_mode =
3284                     AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
3285                     AcceptAllPhys;
3286                 mc_filter[1] = mc_filter[0] = 0xffffffff;
3287         } else if ((dev->mc_count > multicast_filter_limit)
3288                    || (dev->flags & IFF_ALLMULTI)) {
3289                 /* Too many to filter perfectly -- accept all multicasts. */
3290                 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
3291                 mc_filter[1] = mc_filter[0] = 0xffffffff;
3292         } else {
3293                 struct dev_mc_list *mclist;
3294                 unsigned int i;
3295
3296                 rx_mode = AcceptBroadcast | AcceptMyPhys;
3297                 mc_filter[1] = mc_filter[0] = 0;
3298                 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
3299                      i++, mclist = mclist->next) {
3300                         int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
3301                         mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
3302                         rx_mode |= AcceptMulticast;
3303                 }
3304         }
3305
3306         spin_lock_irqsave(&tp->lock, flags);
3307
3308         tmp = rtl8169_rx_config | rx_mode |
3309               (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
3310
3311         if (tp->mac_version > RTL_GIGA_MAC_VER_06) {
3312                 u32 data = mc_filter[0];
3313
3314                 mc_filter[0] = swab32(mc_filter[1]);
3315                 mc_filter[1] = swab32(data);
3316         }
3317
3318         RTL_W32(MAR0 + 0, mc_filter[0]);
3319         RTL_W32(MAR0 + 4, mc_filter[1]);
3320
3321         RTL_W32(RxConfig, tmp);
3322
3323         spin_unlock_irqrestore(&tp->lock, flags);
3324 }
3325
3326 /**
3327  *  rtl8169_get_stats - Get rtl8169 read/write statistics
3328  *  @dev: The Ethernet Device to get statistics for
3329  *
3330  *  Get TX/RX statistics for rtl8169
3331  */
3332 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
3333 {
3334         struct rtl8169_private *tp = netdev_priv(dev);
3335         void __iomem *ioaddr = tp->mmio_addr;
3336         unsigned long flags;
3337
3338         if (netif_running(dev)) {
3339                 spin_lock_irqsave(&tp->lock, flags);
3340                 rtl8169_rx_missed(dev, ioaddr);
3341                 spin_unlock_irqrestore(&tp->lock, flags);
3342         }
3343
3344         return &dev->stats;
3345 }
3346
3347 #ifdef CONFIG_PM
3348
3349 static int rtl8169_suspend(struct pci_dev *pdev, pm_message_t state)
3350 {
3351         struct net_device *dev = pci_get_drvdata(pdev);
3352         struct rtl8169_private *tp = netdev_priv(dev);
3353         void __iomem *ioaddr = tp->mmio_addr;
3354
3355         if (!netif_running(dev))
3356                 goto out_pci_suspend;
3357
3358         netif_device_detach(dev);
3359         netif_stop_queue(dev);
3360
3361         spin_lock_irq(&tp->lock);
3362
3363         rtl8169_asic_down(ioaddr);
3364
3365         rtl8169_rx_missed(dev, ioaddr);
3366
3367         spin_unlock_irq(&tp->lock);
3368
3369 out_pci_suspend:
3370         pci_save_state(pdev);
3371         pci_enable_wake(pdev, pci_choose_state(pdev, state),
3372                 (tp->features & RTL_FEATURE_WOL) ? 1 : 0);
3373         pci_set_power_state(pdev, pci_choose_state(pdev, state));
3374
3375         return 0;
3376 }
3377
3378 static int rtl8169_resume(struct pci_dev *pdev)
3379 {
3380         struct net_device *dev = pci_get_drvdata(pdev);
3381
3382         pci_set_power_state(pdev, PCI_D0);
3383         pci_restore_state(pdev);
3384         pci_enable_wake(pdev, PCI_D0, 0);
3385
3386         if (!netif_running(dev))
3387                 goto out;
3388
3389         netif_device_attach(dev);
3390
3391         rtl8169_schedule_work(dev, rtl8169_reset_task);
3392 out:
3393         return 0;
3394 }
3395
3396 #endif /* CONFIG_PM */
3397
3398 static struct pci_driver rtl8169_pci_driver = {
3399         .name           = MODULENAME,
3400         .id_table       = rtl8169_pci_tbl,
3401         .probe          = rtl8169_init_one,
3402         .remove         = __devexit_p(rtl8169_remove_one),
3403 #ifdef CONFIG_PM
3404         .suspend        = rtl8169_suspend,
3405         .resume         = rtl8169_resume,
3406 #endif
3407 };
3408
3409 static int __init rtl8169_init_module(void)
3410 {
3411         return pci_register_driver(&rtl8169_pci_driver);
3412 }
3413
3414 static void __exit rtl8169_cleanup_module(void)
3415 {
3416         pci_unregister_driver(&rtl8169_pci_driver);
3417 }
3418
3419 module_init(rtl8169_init_module);
3420 module_exit(rtl8169_cleanup_module);