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   1 /*
   2  * r8169.c: RealTek 8169/8168/8101 ethernet driver.
   3  *
   4  * Copyright (c) 2002 ShuChen <shuchen@realtek.com.tw>
   5  * Copyright (c) 2003 - 2007 Francois Romieu <romieu@fr.zoreil.com>
   6  * Copyright (c) a lot of people too. Please respect their work.
   7  *
   8  * See MAINTAINERS file for support contact information.
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/moduleparam.h>
  13 #include <linux/pci.h>
  14 #include <linux/netdevice.h>
  15 #include <linux/etherdevice.h>
  16 #include <linux/delay.h>
  17 #include <linux/ethtool.h>
  18 #include <linux/mii.h>
  19 #include <linux/if_vlan.h>
  20 #include <linux/crc32.h>
  21 #include <linux/in.h>
  22 #include <linux/ip.h>
  23 #include <linux/tcp.h>
  24 #include <linux/init.h>
  25 #include <linux/dma-mapping.h>
  26
  27 #include <asm/system.h>
  28 #include <asm/io.h>
  29 #include <asm/irq.h>
  30
  31 #define RTL8169_VERSION "2.3LK-NAPI"
  32 #define MODULENAME "r8169"
  33 #define PFX MODULENAME ": "
  34
  35 #ifdef RTL8169_DEBUG
  36 #define assert(expr) \
  37         if (!(expr)) {                                  \
  38                 printk( "Assertion failed! %s,%s,%s,line=%d\n", \
  39                 #expr,__FILE__,__func__,__LINE__);              \
  40         }
  41 #define dprintk(fmt, args...) \
  42         do { printk(KERN_DEBUG PFX fmt, ## args); } while (0)
  43 #else
  44 #define assert(expr) do {} while (0)
  45 #define dprintk(fmt, args...)   do {} while (0)
  46 #endif /* RTL8169_DEBUG */
  47
  48 #define R8169_MSG_DEFAULT \
  49         (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN)
  50
  51 #define TX_BUFFS_AVAIL(tp) \
  52         (tp->dirty_tx + NUM_TX_DESC - tp->cur_tx - 1)
  53
  54 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
  55 static const int max_interrupt_work = 20;
  56
  57 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
  58    The RTL chips use a 64 element hash table based on the Ethernet CRC. */
  59 static const int multicast_filter_limit = 32;
  60
  61 /* MAC address length */
  62 #define MAC_ADDR_LEN    6
  63
  64 #define MAX_READ_REQUEST_SHIFT  12
  65 #define RX_FIFO_THRESH  7       /* 7 means NO threshold, Rx buffer level before first PCI xfer. */
  66 #define RX_DMA_BURST    6       /* Maximum PCI burst, '6' is 1024 */
  67 #define TX_DMA_BURST    6       /* Maximum PCI burst, '6' is 1024 */
  68 #define EarlyTxThld     0x3F    /* 0x3F means NO early transmit */
  69 #define RxPacketMaxSize 0x3FE8  /* 16K - 1 - ETH_HLEN - VLAN - CRC... */
  70 #define SafeMtu         0x1c20  /* ... actually life sucks beyond ~7k */
  71 #define InterFrameGap   0x03    /* 3 means InterFrameGap = the shortest one */
  72
  73 #define R8169_REGS_SIZE         256
  74 #define R8169_NAPI_WEIGHT       64
  75 #define NUM_TX_DESC     64      /* Number of Tx descriptor registers */
  76 #define NUM_RX_DESC     256     /* Number of Rx descriptor registers */
  77 #define RX_BUF_SIZE     1536    /* Rx Buffer size */
  78 #define R8169_TX_RING_BYTES     (NUM_TX_DESC * sizeof(struct TxDesc))
  79 #define R8169_RX_RING_BYTES     (NUM_RX_DESC * sizeof(struct RxDesc))
  80
  81 #define RTL8169_TX_TIMEOUT      (6*HZ)
  82 #define RTL8169_PHY_TIMEOUT     (10*HZ)
  83
  84 #define RTL_EEPROM_SIG          cpu_to_le32(0x8129)
  85 #define RTL_EEPROM_SIG_MASK     cpu_to_le32(0xffff)
  86 #define RTL_EEPROM_SIG_ADDR     0x0000
  87
  88 /* write/read MMIO register */
  89 #define RTL_W8(reg, val8)       writeb ((val8), ioaddr + (reg))
  90 #define RTL_W16(reg, val16)     writew ((val16), ioaddr + (reg))
  91 #define RTL_W32(reg, val32)     writel ((val32), ioaddr + (reg))
  92 #define RTL_R8(reg)             readb (ioaddr + (reg))
  93 #define RTL_R16(reg)            readw (ioaddr + (reg))
  94 #define RTL_R32(reg)            ((unsigned long) readl (ioaddr + (reg)))
  95
  96 enum mac_version {
  97         RTL_GIGA_MAC_VER_01 = 0x01, // 8169
  98         RTL_GIGA_MAC_VER_02 = 0x02, // 8169S
  99         RTL_GIGA_MAC_VER_03 = 0x03, // 8110S
 100         RTL_GIGA_MAC_VER_04 = 0x04, // 8169SB
 101         RTL_GIGA_MAC_VER_05 = 0x05, // 8110SCd
 102         RTL_GIGA_MAC_VER_06 = 0x06, // 8110SCe
 103         RTL_GIGA_MAC_VER_07 = 0x07, // 8102e
 104         RTL_GIGA_MAC_VER_08 = 0x08, // 8102e
 105         RTL_GIGA_MAC_VER_09 = 0x09, // 8102e
 106         RTL_GIGA_MAC_VER_10 = 0x0a, // 8101e
 107         RTL_GIGA_MAC_VER_11 = 0x0b, // 8168Bb
 108         RTL_GIGA_MAC_VER_12 = 0x0c, // 8168Be
 109         RTL_GIGA_MAC_VER_13 = 0x0d, // 8101Eb
 110         RTL_GIGA_MAC_VER_14 = 0x0e, // 8101 ?
 111         RTL_GIGA_MAC_VER_15 = 0x0f, // 8101 ?
 112         RTL_GIGA_MAC_VER_16 = 0x11, // 8101Ec
 113         RTL_GIGA_MAC_VER_17 = 0x10, // 8168Bf
 114         RTL_GIGA_MAC_VER_18 = 0x12, // 8168CP
 115         RTL_GIGA_MAC_VER_19 = 0x13, // 8168C
 116         RTL_GIGA_MAC_VER_20 = 0x14, // 8168C
 117         RTL_GIGA_MAC_VER_21 = 0x15, // 8168C
 118         RTL_GIGA_MAC_VER_22 = 0x16, // 8168C
 119         RTL_GIGA_MAC_VER_23 = 0x17, // 8168CP
 120         RTL_GIGA_MAC_VER_24 = 0x18, // 8168CP
 121         RTL_GIGA_MAC_VER_25 = 0x19  // 8168D
 122 };
 123
 124 #define _R(NAME,MAC,MASK) \
 125         { .name = NAME, .mac_version = MAC, .RxConfigMask = MASK }
 126
 127 static const struct {
 128         const char *name;
 129         u8 mac_version;
 130         u32 RxConfigMask;       /* Clears the bits supported by this chip */
 131 } rtl_chip_info[] = {
 132         _R("RTL8169",           RTL_GIGA_MAC_VER_01, 0xff7e1880), // 8169
 133         _R("RTL8169s",          RTL_GIGA_MAC_VER_02, 0xff7e1880), // 8169S
 134         _R("RTL8110s",          RTL_GIGA_MAC_VER_03, 0xff7e1880), // 8110S
 135         _R("RTL8169sb/8110sb",  RTL_GIGA_MAC_VER_04, 0xff7e1880), // 8169SB
 136         _R("RTL8169sc/8110sc",  RTL_GIGA_MAC_VER_05, 0xff7e1880), // 8110SCd
 137         _R("RTL8169sc/8110sc",  RTL_GIGA_MAC_VER_06, 0xff7e1880), // 8110SCe
 138         _R("RTL8102e",          RTL_GIGA_MAC_VER_07, 0xff7e1880), // PCI-E
 139         _R("RTL8102e",          RTL_GIGA_MAC_VER_08, 0xff7e1880), // PCI-E
 140         _R("RTL8102e",          RTL_GIGA_MAC_VER_09, 0xff7e1880), // PCI-E
 141         _R("RTL8101e",          RTL_GIGA_MAC_VER_10, 0xff7e1880), // PCI-E
 142         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_11, 0xff7e1880), // PCI-E
 143         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_12, 0xff7e1880), // PCI-E
 144         _R("RTL8101e",          RTL_GIGA_MAC_VER_13, 0xff7e1880), // PCI-E 8139
 145         _R("RTL8100e",          RTL_GIGA_MAC_VER_14, 0xff7e1880), // PCI-E 8139
 146         _R("RTL8100e",          RTL_GIGA_MAC_VER_15, 0xff7e1880), // PCI-E 8139
 147         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_17, 0xff7e1880), // PCI-E
 148         _R("RTL8101e",          RTL_GIGA_MAC_VER_16, 0xff7e1880), // PCI-E
 149         _R("RTL8168cp/8111cp",  RTL_GIGA_MAC_VER_18, 0xff7e1880), // PCI-E
 150         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_19, 0xff7e1880), // PCI-E
 151         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_20, 0xff7e1880), // PCI-E
 152         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_21, 0xff7e1880), // PCI-E
 153         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_22, 0xff7e1880), // PCI-E
 154         _R("RTL8168cp/8111cp",  RTL_GIGA_MAC_VER_23, 0xff7e1880), // PCI-E
 155         _R("RTL8168cp/8111cp",  RTL_GIGA_MAC_VER_24, 0xff7e1880), // PCI-E
 156         _R("RTL8168d/8111d",    RTL_GIGA_MAC_VER_25, 0xff7e1880)  // PCI-E
 157 };
 158 #undef _R
 159
 160 enum cfg_version {
 161         RTL_CFG_0 = 0x00,
 162         RTL_CFG_1,
 163         RTL_CFG_2
 164 };
 165
 166 static void rtl_hw_start_8169(struct net_device *);
 167 static void rtl_hw_start_8168(struct net_device *);
 168 static void rtl_hw_start_8101(struct net_device *);
 169
 170 static struct pci_device_id rtl8169_pci_tbl[] = {
 171         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8129), 0, 0, RTL_CFG_0 },
 172         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8136), 0, 0, RTL_CFG_2 },
 173         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8167), 0, 0, RTL_CFG_0 },
 174         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8168), 0, 0, RTL_CFG_1 },
 175         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8169), 0, 0, RTL_CFG_0 },
 176         { PCI_DEVICE(PCI_VENDOR_ID_DLINK,       0x4300), 0, 0, RTL_CFG_0 },
 177         { PCI_DEVICE(PCI_VENDOR_ID_AT,          0xc107), 0, 0, RTL_CFG_0 },
 178         { PCI_DEVICE(0x16ec,                    0x0116), 0, 0, RTL_CFG_0 },
 179         { PCI_VENDOR_ID_LINKSYS,                0x1032,
 180                 PCI_ANY_ID, 0x0024, 0, 0, RTL_CFG_0 },
 181         { 0x0001,                               0x8168,
 182                 PCI_ANY_ID, 0x2410, 0, 0, RTL_CFG_2 },
 183         {0,},
 184 };
 185
 186 MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);
 187
 188 static int rx_copybreak = 200;
 189 static int use_dac;
 190 static struct {
 191         u32 msg_enable;
 192 } debug = { -1 };
 193
 194 enum rtl_registers {
 195         MAC0            = 0,    /* Ethernet hardware address. */
 196         MAC4            = 4,
 197         MAR0            = 8,    /* Multicast filter. */
 198         CounterAddrLow          = 0x10,
 199         CounterAddrHigh         = 0x14,
 200         TxDescStartAddrLow      = 0x20,
 201         TxDescStartAddrHigh     = 0x24,
 202         TxHDescStartAddrLow     = 0x28,
 203         TxHDescStartAddrHigh    = 0x2c,
 204         FLASH           = 0x30,
 205         ERSR            = 0x36,
 206         ChipCmd         = 0x37,
 207         TxPoll          = 0x38,
 208         IntrMask        = 0x3c,
 209         IntrStatus      = 0x3e,
 210         TxConfig        = 0x40,
 211         RxConfig        = 0x44,
 212         RxMissed        = 0x4c,
 213         Cfg9346         = 0x50,
 214         Config0         = 0x51,
 215         Config1         = 0x52,
 216         Config2         = 0x53,
 217         Config3         = 0x54,
 218         Config4         = 0x55,
 219         Config5         = 0x56,
 220         MultiIntr       = 0x5c,
 221         PHYAR           = 0x60,
 222         PHYstatus       = 0x6c,
 223         RxMaxSize       = 0xda,
 224         CPlusCmd        = 0xe0,
 225         IntrMitigate    = 0xe2,
 226         RxDescAddrLow   = 0xe4,
 227         RxDescAddrHigh  = 0xe8,
 228         EarlyTxThres    = 0xec,
 229         FuncEvent       = 0xf0,
 230         FuncEventMask   = 0xf4,
 231         FuncPresetState = 0xf8,
 232         FuncForceEvent  = 0xfc,
 233 };
 234
 235 enum rtl8110_registers {
 236         TBICSR                  = 0x64,
 237         TBI_ANAR                = 0x68,
 238         TBI_LPAR                = 0x6a,
 239 };
 240
 241 enum rtl8168_8101_registers {
 242         CSIDR                   = 0x64,
 243         CSIAR                   = 0x68,
 244 #define CSIAR_FLAG                      0x80000000
 245 #define CSIAR_WRITE_CMD                 0x80000000
 246 #define CSIAR_BYTE_ENABLE               0x0f
 247 #define CSIAR_BYTE_ENABLE_SHIFT         12
 248 #define CSIAR_ADDR_MASK                 0x0fff
 249
 250         EPHYAR                  = 0x80,
 251 #define EPHYAR_FLAG                     0x80000000
 252 #define EPHYAR_WRITE_CMD                0x80000000
 253 #define EPHYAR_REG_MASK                 0x1f
 254 #define EPHYAR_REG_SHIFT                16
 255 #define EPHYAR_DATA_MASK                0xffff
 256         DBG_REG                 = 0xd1,
 257 #define FIX_NAK_1                       (1 << 4)
 258 #define FIX_NAK_2                       (1 << 3)
 259 };
 260
 261 enum rtl_register_content {
 262         /* InterruptStatusBits */
 263         SYSErr          = 0x8000,
 264         PCSTimeout      = 0x4000,
 265         SWInt           = 0x0100,
 266         TxDescUnavail   = 0x0080,
 267         RxFIFOOver      = 0x0040,
 268         LinkChg         = 0x0020,
 269         RxOverflow      = 0x0010,
 270         TxErr           = 0x0008,
 271         TxOK            = 0x0004,
 272         RxErr           = 0x0002,
 273         RxOK            = 0x0001,
 274
 275         /* RxStatusDesc */
 276         RxFOVF  = (1 << 23),
 277         RxRWT   = (1 << 22),
 278         RxRES   = (1 << 21),
 279         RxRUNT  = (1 << 20),
 280         RxCRC   = (1 << 19),
 281
 282         /* ChipCmdBits */
 283         CmdReset        = 0x10,
 284         CmdRxEnb        = 0x08,
 285         CmdTxEnb        = 0x04,
 286         RxBufEmpty      = 0x01,
 287
 288         /* TXPoll register p.5 */
 289         HPQ             = 0x80,         /* Poll cmd on the high prio queue */
 290         NPQ             = 0x40,         /* Poll cmd on the low prio queue */
 291         FSWInt          = 0x01,         /* Forced software interrupt */
 292
 293         /* Cfg9346Bits */
 294         Cfg9346_Lock    = 0x00,
 295         Cfg9346_Unlock  = 0xc0,
 296
 297         /* rx_mode_bits */
 298         AcceptErr       = 0x20,
 299         AcceptRunt      = 0x10,
 300         AcceptBroadcast = 0x08,
 301         AcceptMulticast = 0x04,
 302         AcceptMyPhys    = 0x02,
 303         AcceptAllPhys   = 0x01,
 304
 305         /* RxConfigBits */
 306         RxCfgFIFOShift  = 13,
 307         RxCfgDMAShift   =  8,
 308
 309         /* TxConfigBits */
 310         TxInterFrameGapShift = 24,
 311         TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
 312
 313         /* Config1 register p.24 */
 314         LEDS1           = (1 << 7),
 315         LEDS0           = (1 << 6),
 316         MSIEnable       = (1 << 5),     /* Enable Message Signaled Interrupt */
 317         Speed_down      = (1 << 4),
 318         MEMMAP          = (1 << 3),
 319         IOMAP           = (1 << 2),
 320         VPD             = (1 << 1),
 321         PMEnable        = (1 << 0),     /* Power Management Enable */
 322
 323         /* Config2 register p. 25 */
 324         PCI_Clock_66MHz = 0x01,
 325         PCI_Clock_33MHz = 0x00,
 326
 327         /* Config3 register p.25 */
 328         MagicPacket     = (1 << 5),     /* Wake up when receives a Magic Packet */
 329         LinkUp          = (1 << 4),     /* Wake up when the cable connection is re-established */
 330         Beacon_en       = (1 << 0),     /* 8168 only. Reserved in the 8168b */
 331
 332         /* Config5 register p.27 */
 333         BWF             = (1 << 6),     /* Accept Broadcast wakeup frame */
 334         MWF             = (1 << 5),     /* Accept Multicast wakeup frame */
 335         UWF             = (1 << 4),     /* Accept Unicast wakeup frame */
 336         LanWake         = (1 << 1),     /* LanWake enable/disable */
 337         PMEStatus       = (1 << 0),     /* PME status can be reset by PCI RST# */
 338
 339         /* TBICSR p.28 */
 340         TBIReset        = 0x80000000,
 341         TBILoopback     = 0x40000000,
 342         TBINwEnable     = 0x20000000,
 343         TBINwRestart    = 0x10000000,
 344         TBILinkOk       = 0x02000000,
 345         TBINwComplete   = 0x01000000,
 346
 347         /* CPlusCmd p.31 */
 348         EnableBist      = (1 << 15),    // 8168 8101
 349         Mac_dbgo_oe     = (1 << 14),    // 8168 8101
 350         Normal_mode     = (1 << 13),    // unused
 351         Force_half_dup  = (1 << 12),    // 8168 8101
 352         Force_rxflow_en = (1 << 11),    // 8168 8101
 353         Force_txflow_en = (1 << 10),    // 8168 8101
 354         Cxpl_dbg_sel    = (1 << 9),     // 8168 8101
 355         ASF             = (1 << 8),     // 8168 8101
 356         PktCntrDisable  = (1 << 7),     // 8168 8101
 357         Mac_dbgo_sel    = 0x001c,       // 8168
 358         RxVlan          = (1 << 6),
 359         RxChkSum        = (1 << 5),
 360         PCIDAC          = (1 << 4),
 361         PCIMulRW        = (1 << 3),
 362         INTT_0          = 0x0000,       // 8168
 363         INTT_1          = 0x0001,       // 8168
 364         INTT_2          = 0x0002,       // 8168
 365         INTT_3          = 0x0003,       // 8168
 366
 367         /* rtl8169_PHYstatus */
 368         TBI_Enable      = 0x80,
 369         TxFlowCtrl      = 0x40,
 370         RxFlowCtrl      = 0x20,
 371         _1000bpsF       = 0x10,
 372         _100bps         = 0x08,
 373         _10bps          = 0x04,
 374         LinkStatus      = 0x02,
 375         FullDup         = 0x01,
 376
 377         /* _TBICSRBit */
 378         TBILinkOK       = 0x02000000,
 379
 380         /* DumpCounterCommand */
 381         CounterDump     = 0x8,
 382 };
 383
 384 enum desc_status_bit {
 385         DescOwn         = (1 << 31), /* Descriptor is owned by NIC */
 386         RingEnd         = (1 << 30), /* End of descriptor ring */
 387         FirstFrag       = (1 << 29), /* First segment of a packet */
 388         LastFrag        = (1 << 28), /* Final segment of a packet */
 389
 390         /* Tx private */
 391         LargeSend       = (1 << 27), /* TCP Large Send Offload (TSO) */
 392         MSSShift        = 16,        /* MSS value position */
 393         MSSMask         = 0xfff,     /* MSS value + LargeSend bit: 12 bits */
 394         IPCS            = (1 << 18), /* Calculate IP checksum */
 395         UDPCS           = (1 << 17), /* Calculate UDP/IP checksum */
 396         TCPCS           = (1 << 16), /* Calculate TCP/IP checksum */
 397         TxVlanTag       = (1 << 17), /* Add VLAN tag */
 398
 399         /* Rx private */
 400         PID1            = (1 << 18), /* Protocol ID bit 1/2 */
 401         PID0            = (1 << 17), /* Protocol ID bit 2/2 */
 402
 403 #define RxProtoUDP      (PID1)
 404 #define RxProtoTCP      (PID0)
 405 #define RxProtoIP       (PID1 | PID0)
 406 #define RxProtoMask     RxProtoIP
 407
 408         IPFail          = (1 << 16), /* IP checksum failed */
 409         UDPFail         = (1 << 15), /* UDP/IP checksum failed */
 410         TCPFail         = (1 << 14), /* TCP/IP checksum failed */
 411         RxVlanTag       = (1 << 16), /* VLAN tag available */
 412 };
 413
 414 #define RsvdMask        0x3fffc000
 415
 416 struct TxDesc {
 417         __le32 opts1;
 418         __le32 opts2;
 419         __le64 addr;
 420 };
 421
 422 struct RxDesc {
 423         __le32 opts1;
 424         __le32 opts2;
 425         __le64 addr;
 426 };
 427
 428 struct ring_info {
 429         struct sk_buff  *skb;
 430         u32             len;
 431         u8              __pad[sizeof(void *) - sizeof(u32)];
 432 };
 433
 434 enum features {
 435         RTL_FEATURE_WOL         = (1 << 0),
 436         RTL_FEATURE_MSI         = (1 << 1),
 437         RTL_FEATURE_GMII        = (1 << 2),
 438 };
 439
 440 struct rtl8169_private {
 441         void __iomem *mmio_addr;        /* memory map physical address */
 442         struct pci_dev *pci_dev;        /* Index of PCI device */
 443         struct net_device *dev;
 444         struct napi_struct napi;
 445         spinlock_t lock;                /* spin lock flag */
 446         u32 msg_enable;
 447         int chipset;
 448         int mac_version;
 449         u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
 450         u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
 451         u32 dirty_rx;
 452         u32 dirty_tx;
 453         struct TxDesc *TxDescArray;     /* 256-aligned Tx descriptor ring */
 454         struct RxDesc *RxDescArray;     /* 256-aligned Rx descriptor ring */
 455         dma_addr_t TxPhyAddr;
 456         dma_addr_t RxPhyAddr;
 457         struct sk_buff *Rx_skbuff[NUM_RX_DESC]; /* Rx data buffers */
 458         struct ring_info tx_skb[NUM_TX_DESC];   /* Tx data buffers */
 459         unsigned align;
 460         unsigned rx_buf_sz;
 461         struct timer_list timer;
 462         u16 cp_cmd;
 463         u16 intr_event;
 464         u16 napi_event;
 465         u16 intr_mask;
 466         int phy_auto_nego_reg;
 467         int phy_1000_ctrl_reg;
 468 #ifdef CONFIG_R8169_VLAN
 469         struct vlan_group *vlgrp;
 470 #endif
 471         int (*set_speed)(struct net_device *, u8 autoneg, u16 speed, u8 duplex);
 472         int (*get_settings)(struct net_device *, struct ethtool_cmd *);
 473         void (*phy_reset_enable)(void __iomem *);
 474         void (*hw_start)(struct net_device *);
 475         unsigned int (*phy_reset_pending)(void __iomem *);
 476         unsigned int (*link_ok)(void __iomem *);
 477         int pcie_cap;
 478         struct delayed_work task;
 479         unsigned features;
 480
 481         struct mii_if_info mii;
 482 };
 483
 484 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
 485 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
 486 module_param(rx_copybreak, int, 0);
 487 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
 488 module_param(use_dac, int, 0);
 489 MODULE_PARM_DESC(use_dac, "Enable PCI DAC. Unsafe on 32 bit PCI slot.");
 490 module_param_named(debug, debug.msg_enable, int, 0);
 491 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
 492 MODULE_LICENSE("GPL");
 493 MODULE_VERSION(RTL8169_VERSION);
 494
 495 static int rtl8169_open(struct net_device *dev);
 496 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev);
 497 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance);
 498 static int rtl8169_init_ring(struct net_device *dev);
 499 static void rtl_hw_start(struct net_device *dev);
 500 static int rtl8169_close(struct net_device *dev);
 501 static void rtl_set_rx_mode(struct net_device *dev);
 502 static void rtl8169_tx_timeout(struct net_device *dev);
 503 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
 504 static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
 505                                 void __iomem *, u32 budget);
 506 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
 507 static void rtl8169_down(struct net_device *dev);
 508 static void rtl8169_rx_clear(struct rtl8169_private *tp);
 509 static int rtl8169_poll(struct napi_struct *napi, int budget);
 510
 511 static const unsigned int rtl8169_rx_config =
 512         (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
 513
 514 static void mdio_write(void __iomem *ioaddr, int reg_addr, int value)
 515 {
 516         int i;
 517
 518         RTL_W32(PHYAR, 0x80000000 | (reg_addr & 0x1f) << 16 | (value & 0xffff));
 519
 520         for (i = 20; i > 0; i--) {
 521                 /*
 522                  * Check if the RTL8169 has completed writing to the specified
 523                  * MII register.
 524                  */
 525                 if (!(RTL_R32(PHYAR) & 0x80000000))
 526                         break;
 527                 udelay(25);
 528         }
 529 }
 530
 531 static int mdio_read(void __iomem *ioaddr, int reg_addr)
 532 {
 533         int i, value = -1;
 534
 535         RTL_W32(PHYAR, 0x0 | (reg_addr & 0x1f) << 16);
 536
 537         for (i = 20; i > 0; i--) {
 538                 /*
 539                  * Check if the RTL8169 has completed retrieving data from
 540                  * the specified MII register.
 541                  */
 542                 if (RTL_R32(PHYAR) & 0x80000000) {
 543                         value = RTL_R32(PHYAR) & 0xffff;
 544                         break;
 545                 }
 546                 udelay(25);
 547         }
 548         return value;
 549 }
 550
 551 static void mdio_patch(void __iomem *ioaddr, int reg_addr, int value)
 552 {
 553         mdio_write(ioaddr, reg_addr, mdio_read(ioaddr, reg_addr) | value);
 554 }
 555
 556 static void rtl_mdio_write(struct net_device *dev, int phy_id, int location,
 557                            int val)
 558 {
 559         struct rtl8169_private *tp = netdev_priv(dev);
 560         void __iomem *ioaddr = tp->mmio_addr;
 561
 562         mdio_write(ioaddr, location, val);
 563 }
 564
 565 static int rtl_mdio_read(struct net_device *dev, int phy_id, int location)
 566 {
 567         struct rtl8169_private *tp = netdev_priv(dev);
 568         void __iomem *ioaddr = tp->mmio_addr;
 569
 570         return mdio_read(ioaddr, location);
 571 }
 572
 573 static void rtl_ephy_write(void __iomem *ioaddr, int reg_addr, int value)
 574 {
 575         unsigned int i;
 576
 577         RTL_W32(EPHYAR, EPHYAR_WRITE_CMD | (value & EPHYAR_DATA_MASK) |
 578                 (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
 579
 580         for (i = 0; i < 100; i++) {
 581                 if (!(RTL_R32(EPHYAR) & EPHYAR_FLAG))
 582                         break;
 583                 udelay(10);
 584         }
 585 }
 586
 587 static u16 rtl_ephy_read(void __iomem *ioaddr, int reg_addr)
 588 {
 589         u16 value = 0xffff;
 590         unsigned int i;
 591
 592         RTL_W32(EPHYAR, (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
 593
 594         for (i = 0; i < 100; i++) {
 595                 if (RTL_R32(EPHYAR) & EPHYAR_FLAG) {
 596                         value = RTL_R32(EPHYAR) & EPHYAR_DATA_MASK;
 597                         break;
 598                 }
 599                 udelay(10);
 600         }
 601
 602         return value;
 603 }
 604
 605 static void rtl_csi_write(void __iomem *ioaddr, int addr, int value)
 606 {
 607         unsigned int i;
 608
 609         RTL_W32(CSIDR, value);
 610         RTL_W32(CSIAR, CSIAR_WRITE_CMD | (addr & CSIAR_ADDR_MASK) |
 611                 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
 612
 613         for (i = 0; i < 100; i++) {
 614                 if (!(RTL_R32(CSIAR) & CSIAR_FLAG))
 615                         break;
 616                 udelay(10);
 617         }
 618 }
 619
 620 static u32 rtl_csi_read(void __iomem *ioaddr, int addr)
 621 {
 622         u32 value = ~0x00;
 623         unsigned int i;
 624
 625         RTL_W32(CSIAR, (addr & CSIAR_ADDR_MASK) |
 626                 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
 627
 628         for (i = 0; i < 100; i++) {
 629                 if (RTL_R32(CSIAR) & CSIAR_FLAG) {
 630                         value = RTL_R32(CSIDR);
 631                         break;
 632                 }
 633                 udelay(10);
 634         }
 635
 636         return value;
 637 }
 638
 639 static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
 640 {
 641         RTL_W16(IntrMask, 0x0000);
 642
 643         RTL_W16(IntrStatus, 0xffff);
 644 }
 645
 646 static void rtl8169_asic_down(void __iomem *ioaddr)
 647 {
 648         RTL_W8(ChipCmd, 0x00);
 649         rtl8169_irq_mask_and_ack(ioaddr);
 650         RTL_R16(CPlusCmd);
 651 }
 652
 653 static unsigned int rtl8169_tbi_reset_pending(void __iomem *ioaddr)
 654 {
 655         return RTL_R32(TBICSR) & TBIReset;
 656 }
 657
 658 static unsigned int rtl8169_xmii_reset_pending(void __iomem *ioaddr)
 659 {
 660         return mdio_read(ioaddr, MII_BMCR) & BMCR_RESET;
 661 }
 662
 663 static unsigned int rtl8169_tbi_link_ok(void __iomem *ioaddr)
 664 {
 665         return RTL_R32(TBICSR) & TBILinkOk;
 666 }
 667
 668 static unsigned int rtl8169_xmii_link_ok(void __iomem *ioaddr)
 669 {
 670         return RTL_R8(PHYstatus) & LinkStatus;
 671 }
 672
 673 static void rtl8169_tbi_reset_enable(void __iomem *ioaddr)
 674 {
 675         RTL_W32(TBICSR, RTL_R32(TBICSR) | TBIReset);
 676 }
 677
 678 static void rtl8169_xmii_reset_enable(void __iomem *ioaddr)
 679 {
 680         unsigned int val;
 681
 682         val = mdio_read(ioaddr, MII_BMCR) | BMCR_RESET;
 683         mdio_write(ioaddr, MII_BMCR, val & 0xffff);
 684 }
 685
 686 static void rtl8169_check_link_status(struct net_device *dev,
 687                                       struct rtl8169_private *tp,
 688                                       void __iomem *ioaddr)
 689 {
 690         unsigned long flags;
 691
 692         spin_lock_irqsave(&tp->lock, flags);
 693         if (tp->link_ok(ioaddr)) {
 694                 netif_carrier_on(dev);
 695                 if (netif_msg_ifup(tp))
 696                         printk(KERN_INFO PFX "%s: link up\n", dev->name);
 697         } else {
 698                 if (netif_msg_ifdown(tp))
 699                         printk(KERN_INFO PFX "%s: link down\n", dev->name);
 700                 netif_carrier_off(dev);
 701         }
 702         spin_unlock_irqrestore(&tp->lock, flags);
 703 }
 704
 705 static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 706 {
 707         struct rtl8169_private *tp = netdev_priv(dev);
 708         void __iomem *ioaddr = tp->mmio_addr;
 709         u8 options;
 710
 711         wol->wolopts = 0;
 712
 713 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
 714         wol->supported = WAKE_ANY;
 715
 716         spin_lock_irq(&tp->lock);
 717
 718         options = RTL_R8(Config1);
 719         if (!(options & PMEnable))
 720                 goto out_unlock;
 721
 722         options = RTL_R8(Config3);
 723         if (options & LinkUp)
 724                 wol->wolopts |= WAKE_PHY;
 725         if (options & MagicPacket)
 726                 wol->wolopts |= WAKE_MAGIC;
 727
 728         options = RTL_R8(Config5);
 729         if (options & UWF)
 730                 wol->wolopts |= WAKE_UCAST;
 731         if (options & BWF)
 732                 wol->wolopts |= WAKE_BCAST;
 733         if (options & MWF)
 734                 wol->wolopts |= WAKE_MCAST;
 735
 736 out_unlock:
 737         spin_unlock_irq(&tp->lock);
 738 }
 739
 740 static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 741 {
 742         struct rtl8169_private *tp = netdev_priv(dev);
 743         void __iomem *ioaddr = tp->mmio_addr;
 744         unsigned int i;
 745         static struct {
 746                 u32 opt;
 747                 u16 reg;
 748                 u8  mask;
 749         } cfg[] = {
 750                 { WAKE_ANY,   Config1, PMEnable },
 751                 { WAKE_PHY,   Config3, LinkUp },
 752                 { WAKE_MAGIC, Config3, MagicPacket },
 753                 { WAKE_UCAST, Config5, UWF },
 754                 { WAKE_BCAST, Config5, BWF },
 755                 { WAKE_MCAST, Config5, MWF },
 756                 { WAKE_ANY,   Config5, LanWake }
 757         };
 758
 759         spin_lock_irq(&tp->lock);
 760
 761         RTL_W8(Cfg9346, Cfg9346_Unlock);
 762
 763         for (i = 0; i < ARRAY_SIZE(cfg); i++) {
 764                 u8 options = RTL_R8(cfg[i].reg) & ~cfg[i].mask;
 765                 if (wol->wolopts & cfg[i].opt)
 766                         options |= cfg[i].mask;
 767                 RTL_W8(cfg[i].reg, options);
 768         }
 769
 770         RTL_W8(Cfg9346, Cfg9346_Lock);
 771
 772         if (wol->wolopts)
 773                 tp->features |= RTL_FEATURE_WOL;
 774         else
 775                 tp->features &= ~RTL_FEATURE_WOL;
 776         device_set_wakeup_enable(&tp->pci_dev->dev, wol->wolopts);
 777
 778         spin_unlock_irq(&tp->lock);
 779
 780         return 0;
 781 }
 782
 783 static void rtl8169_get_drvinfo(struct net_device *dev,
 784                                 struct ethtool_drvinfo *info)
 785 {
 786         struct rtl8169_private *tp = netdev_priv(dev);
 787
 788         strcpy(info->driver, MODULENAME);
 789         strcpy(info->version, RTL8169_VERSION);
 790         strcpy(info->bus_info, pci_name(tp->pci_dev));
 791 }
 792
 793 static int rtl8169_get_regs_len(struct net_device *dev)
 794 {
 795         return R8169_REGS_SIZE;
 796 }
 797
 798 static int rtl8169_set_speed_tbi(struct net_device *dev,
 799                                  u8 autoneg, u16 speed, u8 duplex)
 800 {
 801         struct rtl8169_private *tp = netdev_priv(dev);
 802         void __iomem *ioaddr = tp->mmio_addr;
 803         int ret = 0;
 804         u32 reg;
 805
 806         reg = RTL_R32(TBICSR);
 807         if ((autoneg == AUTONEG_DISABLE) && (speed == SPEED_1000) &&
 808             (duplex == DUPLEX_FULL)) {
 809                 RTL_W32(TBICSR, reg & ~(TBINwEnable | TBINwRestart));
 810         } else if (autoneg == AUTONEG_ENABLE)
 811                 RTL_W32(TBICSR, reg | TBINwEnable | TBINwRestart);
 812         else {
 813                 if (netif_msg_link(tp)) {
 814                         printk(KERN_WARNING "%s: "
 815                                "incorrect speed setting refused in TBI mode\n",
 816                                dev->name);
 817                 }
 818                 ret = -EOPNOTSUPP;
 819         }
 820
 821         return ret;
 822 }
 823
 824 static int rtl8169_set_speed_xmii(struct net_device *dev,
 825                                   u8 autoneg, u16 speed, u8 duplex)
 826 {
 827         struct rtl8169_private *tp = netdev_priv(dev);
 828         void __iomem *ioaddr = tp->mmio_addr;
 829         int auto_nego, giga_ctrl;
 830
 831         auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
 832         auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
 833                        ADVERTISE_100HALF | ADVERTISE_100FULL);
 834         giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
 835         giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
 836
 837         if (autoneg == AUTONEG_ENABLE) {
 838                 auto_nego |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
 839                               ADVERTISE_100HALF | ADVERTISE_100FULL);
 840                 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
 841         } else {
 842                 if (speed == SPEED_10)
 843                         auto_nego |= ADVERTISE_10HALF | ADVERTISE_10FULL;
 844                 else if (speed == SPEED_100)
 845                         auto_nego |= ADVERTISE_100HALF | ADVERTISE_100FULL;
 846                 else if (speed == SPEED_1000)
 847                         giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
 848
 849                 if (duplex == DUPLEX_HALF)
 850                         auto_nego &= ~(ADVERTISE_10FULL | ADVERTISE_100FULL);
 851
 852                 if (duplex == DUPLEX_FULL)
 853                         auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_100HALF);
 854
 855                 /* This tweak comes straight from Realtek's driver. */
 856                 if ((speed == SPEED_100) && (duplex == DUPLEX_HALF) &&
 857                     ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
 858                      (tp->mac_version == RTL_GIGA_MAC_VER_16))) {
 859                         auto_nego = ADVERTISE_100HALF | ADVERTISE_CSMA;
 860                 }
 861         }
 862
 863         /* The 8100e/8101e/8102e do Fast Ethernet only. */
 864         if ((tp->mac_version == RTL_GIGA_MAC_VER_07) ||
 865             (tp->mac_version == RTL_GIGA_MAC_VER_08) ||
 866             (tp->mac_version == RTL_GIGA_MAC_VER_09) ||
 867             (tp->mac_version == RTL_GIGA_MAC_VER_10) ||
 868             (tp->mac_version == RTL_GIGA_MAC_VER_13) ||
 869             (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
 870             (tp->mac_version == RTL_GIGA_MAC_VER_15) ||
 871             (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
 872                 if ((giga_ctrl & (ADVERTISE_1000FULL | ADVERTISE_1000HALF)) &&
 873                     netif_msg_link(tp)) {
 874                         printk(KERN_INFO "%s: PHY does not support 1000Mbps.\n",
 875                                dev->name);
 876                 }
 877                 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
 878         }
 879
 880         auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
 881
 882         if ((tp->mac_version == RTL_GIGA_MAC_VER_11) ||
 883             (tp->mac_version == RTL_GIGA_MAC_VER_12) ||
 884             (tp->mac_version >= RTL_GIGA_MAC_VER_17)) {
 885                 /*
 886                  * Wake up the PHY.
 887                  * Vendor specific (0x1f) and reserved (0x0e) MII registers.
 888                  */
 889                 mdio_write(ioaddr, 0x1f, 0x0000);
 890                 mdio_write(ioaddr, 0x0e, 0x0000);
 891         }
 892
 893         tp->phy_auto_nego_reg = auto_nego;
 894         tp->phy_1000_ctrl_reg = giga_ctrl;
 895
 896         mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
 897         mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
 898         mdio_write(ioaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
 899         return 0;
 900 }
 901
 902 static int rtl8169_set_speed(struct net_device *dev,
 903                              u8 autoneg, u16 speed, u8 duplex)
 904 {
 905         struct rtl8169_private *tp = netdev_priv(dev);
 906         int ret;
 907
 908         ret = tp->set_speed(dev, autoneg, speed, duplex);
 909
 910         if (netif_running(dev) && (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
 911                 mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
 912
 913         return ret;
 914 }
 915
 916 static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 917 {
 918         struct rtl8169_private *tp = netdev_priv(dev);
 919         unsigned long flags;
 920         int ret;
 921
 922         spin_lock_irqsave(&tp->lock, flags);
 923         ret = rtl8169_set_speed(dev, cmd->autoneg, cmd->speed, cmd->duplex);
 924         spin_unlock_irqrestore(&tp->lock, flags);
 925
 926         return ret;
 927 }
 928
 929 static u32 rtl8169_get_rx_csum(struct net_device *dev)
 930 {
 931         struct rtl8169_private *tp = netdev_priv(dev);
 932
 933         return tp->cp_cmd & RxChkSum;
 934 }
 935
 936 static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
 937 {
 938         struct rtl8169_private *tp = netdev_priv(dev);
 939         void __iomem *ioaddr = tp->mmio_addr;
 940         unsigned long flags;
 941
 942         spin_lock_irqsave(&tp->lock, flags);
 943
 944         if (data)
 945                 tp->cp_cmd |= RxChkSum;
 946         else
 947                 tp->cp_cmd &= ~RxChkSum;
 948
 949         RTL_W16(CPlusCmd, tp->cp_cmd);
 950         RTL_R16(CPlusCmd);
 951
 952         spin_unlock_irqrestore(&tp->lock, flags);
 953
 954         return 0;
 955 }
 956
 957 #ifdef CONFIG_R8169_VLAN
 958
 959 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
 960                                       struct sk_buff *skb)
 961 {
 962         return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
 963                 TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
 964 }
 965
 966 static void rtl8169_vlan_rx_register(struct net_device *dev,
 967                                      struct vlan_group *grp)
 968 {
 969         struct rtl8169_private *tp = netdev_priv(dev);
 970         void __iomem *ioaddr = tp->mmio_addr;
 971         unsigned long flags;
 972
 973         spin_lock_irqsave(&tp->lock, flags);
 974         tp->vlgrp = grp;
 975         if (tp->vlgrp)
 976                 tp->cp_cmd |= RxVlan;
 977         else
 978                 tp->cp_cmd &= ~RxVlan;
 979         RTL_W16(CPlusCmd, tp->cp_cmd);
 980         RTL_R16(CPlusCmd);
 981         spin_unlock_irqrestore(&tp->lock, flags);
 982 }
 983
 984 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
 985                                struct sk_buff *skb)
 986 {
 987         u32 opts2 = le32_to_cpu(desc->opts2);
 988         struct vlan_group *vlgrp = tp->vlgrp;
 989         int ret;
 990
 991         if (vlgrp && (opts2 & RxVlanTag)) {
 992                 vlan_hwaccel_receive_skb(skb, vlgrp, swab16(opts2 & 0xffff));
 993                 ret = 0;
 994         } else
 995                 ret = -1;
 996         desc->opts2 = 0;
 997         return ret;
 998 }
 999
1000 #else /* !CONFIG_R8169_VLAN */
1001
1002 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
1003                                       struct sk_buff *skb)
1004 {
1005         return 0;
1006 }
1007
1008 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
1009                                struct sk_buff *skb)
1010 {
1011         return -1;
1012 }
1013
1014 #endif
1015
1016 static int rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
1017 {
1018         struct rtl8169_private *tp = netdev_priv(dev);
1019         void __iomem *ioaddr = tp->mmio_addr;
1020         u32 status;
1021
1022         cmd->supported =
1023                 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE;
1024         cmd->port = PORT_FIBRE;
1025         cmd->transceiver = XCVR_INTERNAL;
1026
1027         status = RTL_R32(TBICSR);
1028         cmd->advertising = (status & TBINwEnable) ?  ADVERTISED_Autoneg : 0;
1029         cmd->autoneg = !!(status & TBINwEnable);
1030
1031         cmd->speed = SPEED_1000;
1032         cmd->duplex = DUPLEX_FULL; /* Always set */
1033
1034         return 0;
1035 }
1036
1037 static int rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
1038 {
1039         struct rtl8169_private *tp = netdev_priv(dev);
1040
1041         return mii_ethtool_gset(&tp->mii, cmd);
1042 }
1043
1044 static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1045 {
1046         struct rtl8169_private *tp = netdev_priv(dev);
1047         unsigned long flags;
1048         int rc;
1049
1050         spin_lock_irqsave(&tp->lock, flags);
1051
1052         rc = tp->get_settings(dev, cmd);
1053
1054         spin_unlock_irqrestore(&tp->lock, flags);
1055         return rc;
1056 }
1057
1058 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1059                              void *p)
1060 {
1061         struct rtl8169_private *tp = netdev_priv(dev);
1062         unsigned long flags;
1063
1064         if (regs->len > R8169_REGS_SIZE)
1065                 regs->len = R8169_REGS_SIZE;
1066
1067         spin_lock_irqsave(&tp->lock, flags);
1068         memcpy_fromio(p, tp->mmio_addr, regs->len);
1069         spin_unlock_irqrestore(&tp->lock, flags);
1070 }
1071
1072 static u32 rtl8169_get_msglevel(struct net_device *dev)
1073 {
1074         struct rtl8169_private *tp = netdev_priv(dev);
1075
1076         return tp->msg_enable;
1077 }
1078
1079 static void rtl8169_set_msglevel(struct net_device *dev, u32 value)
1080 {
1081         struct rtl8169_private *tp = netdev_priv(dev);
1082
1083         tp->msg_enable = value;
1084 }
1085
1086 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
1087         "tx_packets",
1088         "rx_packets",
1089         "tx_errors",
1090         "rx_errors",
1091         "rx_missed",
1092         "align_errors",
1093         "tx_single_collisions",
1094         "tx_multi_collisions",
1095         "unicast",
1096         "broadcast",
1097         "multicast",
1098         "tx_aborted",
1099         "tx_underrun",
1100 };
1101
1102 struct rtl8169_counters {
1103         __le64  tx_packets;
1104         __le64  rx_packets;
1105         __le64  tx_errors;
1106         __le32  rx_errors;
1107         __le16  rx_missed;
1108         __le16  align_errors;
1109         __le32  tx_one_collision;
1110         __le32  tx_multi_collision;
1111         __le64  rx_unicast;
1112         __le64  rx_broadcast;
1113         __le32  rx_multicast;
1114         __le16  tx_aborted;
1115         __le16  tx_underun;
1116 };
1117
1118 static int rtl8169_get_sset_count(struct net_device *dev, int sset)
1119 {
1120         switch (sset) {
1121         case ETH_SS_STATS:
1122                 return ARRAY_SIZE(rtl8169_gstrings);
1123         default:
1124                 return -EOPNOTSUPP;
1125         }
1126 }
1127
1128 static void rtl8169_get_ethtool_stats(struct net_device *dev,
1129                                       struct ethtool_stats *stats, u64 *data)
1130 {
1131         struct rtl8169_private *tp = netdev_priv(dev);
1132         void __iomem *ioaddr = tp->mmio_addr;
1133         struct rtl8169_counters *counters;
1134         dma_addr_t paddr;
1135         u32 cmd;
1136
1137         ASSERT_RTNL();
1138
1139         counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
1140         if (!counters)
1141                 return;
1142
1143         RTL_W32(CounterAddrHigh, (u64)paddr >> 32);
1144         cmd = (u64)paddr & DMA_32BIT_MASK;
1145         RTL_W32(CounterAddrLow, cmd);
1146         RTL_W32(CounterAddrLow, cmd | CounterDump);
1147
1148         while (RTL_R32(CounterAddrLow) & CounterDump) {
1149                 if (msleep_interruptible(1))
1150                         break;
1151         }
1152
1153         RTL_W32(CounterAddrLow, 0);
1154         RTL_W32(CounterAddrHigh, 0);
1155
1156         data[0] = le64_to_cpu(counters->tx_packets);
1157         data[1] = le64_to_cpu(counters->rx_packets);
1158         data[2] = le64_to_cpu(counters->tx_errors);
1159         data[3] = le32_to_cpu(counters->rx_errors);
1160         data[4] = le16_to_cpu(counters->rx_missed);
1161         data[5] = le16_to_cpu(counters->align_errors);
1162         data[6] = le32_to_cpu(counters->tx_one_collision);
1163         data[7] = le32_to_cpu(counters->tx_multi_collision);
1164         data[8] = le64_to_cpu(counters->rx_unicast);
1165         data[9] = le64_to_cpu(counters->rx_broadcast);
1166         data[10] = le32_to_cpu(counters->rx_multicast);
1167         data[11] = le16_to_cpu(counters->tx_aborted);
1168         data[12] = le16_to_cpu(counters->tx_underun);
1169
1170         pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
1171 }
1172
1173 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1174 {
1175         switch(stringset) {
1176         case ETH_SS_STATS:
1177                 memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
1178                 break;
1179         }
1180 }
1181
1182 static const struct ethtool_ops rtl8169_ethtool_ops = {
1183         .get_drvinfo            = rtl8169_get_drvinfo,
1184         .get_regs_len           = rtl8169_get_regs_len,
1185         .get_link               = ethtool_op_get_link,
1186         .get_settings           = rtl8169_get_settings,
1187         .set_settings           = rtl8169_set_settings,
1188         .get_msglevel           = rtl8169_get_msglevel,
1189         .set_msglevel           = rtl8169_set_msglevel,
1190         .get_rx_csum            = rtl8169_get_rx_csum,
1191         .set_rx_csum            = rtl8169_set_rx_csum,
1192         .set_tx_csum            = ethtool_op_set_tx_csum,
1193         .set_sg                 = ethtool_op_set_sg,
1194         .set_tso                = ethtool_op_set_tso,
1195         .get_regs               = rtl8169_get_regs,
1196         .get_wol                = rtl8169_get_wol,
1197         .set_wol                = rtl8169_set_wol,
1198         .get_strings            = rtl8169_get_strings,
1199         .get_sset_count         = rtl8169_get_sset_count,
1200         .get_ethtool_stats      = rtl8169_get_ethtool_stats,
1201 };
1202
1203 static void rtl8169_write_gmii_reg_bit(void __iomem *ioaddr, int reg,
1204                                        int bitnum, int bitval)
1205 {
1206         int val;
1207
1208         val = mdio_read(ioaddr, reg);
1209         val = (bitval == 1) ?
1210                 val | (bitval << bitnum) :  val & ~(0x0001 << bitnum);
1211         mdio_write(ioaddr, reg, val & 0xffff);
1212 }
1213
1214 static void rtl8169_get_mac_version(struct rtl8169_private *tp,
1215                                     void __iomem *ioaddr)
1216 {
1217         /*
1218          * The driver currently handles the 8168Bf and the 8168Be identically
1219          * but they can be identified more specifically through the test below
1220          * if needed:
1221          *
1222          * (RTL_R32(TxConfig) & 0x700000) == 0x500000 ? 8168Bf : 8168Be
1223          *
1224          * Same thing for the 8101Eb and the 8101Ec:
1225          *
1226          * (RTL_R32(TxConfig) & 0x700000) == 0x200000 ? 8101Eb : 8101Ec
1227          */
1228         const struct {
1229                 u32 mask;
1230                 u32 val;
1231                 int mac_version;
1232         } mac_info[] = {
1233                 /* 8168D family. */
1234                 { 0x7c800000, 0x28000000,       RTL_GIGA_MAC_VER_25 },
1235
1236                 /* 8168C family. */
1237                 { 0x7cf00000, 0x3ca00000,       RTL_GIGA_MAC_VER_24 },
1238                 { 0x7cf00000, 0x3c900000,       RTL_GIGA_MAC_VER_23 },
1239                 { 0x7cf00000, 0x3c800000,       RTL_GIGA_MAC_VER_18 },
1240                 { 0x7c800000, 0x3c800000,       RTL_GIGA_MAC_VER_24 },
1241                 { 0x7cf00000, 0x3c000000,       RTL_GIGA_MAC_VER_19 },
1242                 { 0x7cf00000, 0x3c200000,       RTL_GIGA_MAC_VER_20 },
1243                 { 0x7cf00000, 0x3c300000,       RTL_GIGA_MAC_VER_21 },
1244                 { 0x7cf00000, 0x3c400000,       RTL_GIGA_MAC_VER_22 },
1245                 { 0x7c800000, 0x3c000000,       RTL_GIGA_MAC_VER_22 },
1246
1247                 /* 8168B family. */
1248                 { 0x7cf00000, 0x38000000,       RTL_GIGA_MAC_VER_12 },
1249                 { 0x7cf00000, 0x38500000,       RTL_GIGA_MAC_VER_17 },
1250                 { 0x7c800000, 0x38000000,       RTL_GIGA_MAC_VER_17 },
1251                 { 0x7c800000, 0x30000000,       RTL_GIGA_MAC_VER_11 },
1252
1253                 /* 8101 family. */
1254                 { 0x7cf00000, 0x34a00000,       RTL_GIGA_MAC_VER_09 },
1255                 { 0x7cf00000, 0x24a00000,       RTL_GIGA_MAC_VER_09 },
1256                 { 0x7cf00000, 0x34900000,       RTL_GIGA_MAC_VER_08 },
1257                 { 0x7cf00000, 0x24900000,       RTL_GIGA_MAC_VER_08 },
1258                 { 0x7cf00000, 0x34800000,       RTL_GIGA_MAC_VER_07 },
1259                 { 0x7cf00000, 0x24800000,       RTL_GIGA_MAC_VER_07 },
1260                 { 0x7cf00000, 0x34000000,       RTL_GIGA_MAC_VER_13 },
1261                 { 0x7cf00000, 0x34300000,       RTL_GIGA_MAC_VER_10 },
1262                 { 0x7cf00000, 0x34200000,       RTL_GIGA_MAC_VER_16 },
1263                 { 0x7c800000, 0x34800000,       RTL_GIGA_MAC_VER_09 },
1264                 { 0x7c800000, 0x24800000,       RTL_GIGA_MAC_VER_09 },
1265                 { 0x7c800000, 0x34000000,       RTL_GIGA_MAC_VER_16 },
1266                 /* FIXME: where did these entries come from ? -- FR */
1267                 { 0xfc800000, 0x38800000,       RTL_GIGA_MAC_VER_15 },
1268                 { 0xfc800000, 0x30800000,       RTL_GIGA_MAC_VER_14 },
1269
1270                 /* 8110 family. */
1271                 { 0xfc800000, 0x98000000,       RTL_GIGA_MAC_VER_06 },
1272                 { 0xfc800000, 0x18000000,       RTL_GIGA_MAC_VER_05 },
1273                 { 0xfc800000, 0x10000000,       RTL_GIGA_MAC_VER_04 },
1274                 { 0xfc800000, 0x04000000,       RTL_GIGA_MAC_VER_03 },
1275                 { 0xfc800000, 0x00800000,       RTL_GIGA_MAC_VER_02 },
1276                 { 0xfc800000, 0x00000000,       RTL_GIGA_MAC_VER_01 },
1277
1278                 { 0x00000000, 0x00000000,       RTL_GIGA_MAC_VER_01 }   /* Catch-all */
1279         }, *p = mac_info;
1280         u32 reg;
1281
1282         reg = RTL_R32(TxConfig);
1283         while ((reg & p->mask) != p->val)
1284                 p++;
1285         tp->mac_version = p->mac_version;
1286
1287         if (p->mask == 0x00000000) {
1288                 struct pci_dev *pdev = tp->pci_dev;
1289
1290                 dev_info(&pdev->dev, "unknown MAC (%08x)\n", reg);
1291         }
1292 }
1293
1294 static void rtl8169_print_mac_version(struct rtl8169_private *tp)
1295 {
1296         dprintk("mac_version = 0x%02x\n", tp->mac_version);
1297 }
1298
1299 struct phy_reg {
1300         u16 reg;
1301         u16 val;
1302 };
1303
1304 static void rtl_phy_write(void __iomem *ioaddr, struct phy_reg *regs, int len)
1305 {
1306         while (len-- > 0) {
1307                 mdio_write(ioaddr, regs->reg, regs->val);
1308                 regs++;
1309         }
1310 }
1311
1312 static void rtl8169s_hw_phy_config(void __iomem *ioaddr)
1313 {
1314         struct {
1315                 u16 regs[5]; /* Beware of bit-sign propagation */
1316         } phy_magic[5] = { {
1317                 { 0x0000,       //w 4 15 12 0
1318                   0x00a1,       //w 3 15 0 00a1
1319                   0x0008,       //w 2 15 0 0008
1320                   0x1020,       //w 1 15 0 1020
1321                   0x1000 } },{  //w 0 15 0 1000
1322                 { 0x7000,       //w 4 15 12 7
1323                   0xff41,       //w 3 15 0 ff41
1324                   0xde60,       //w 2 15 0 de60
1325                   0x0140,       //w 1 15 0 0140
1326                   0x0077 } },{  //w 0 15 0 0077
1327                 { 0xa000,       //w 4 15 12 a
1328                   0xdf01,       //w 3 15 0 df01
1329                   0xdf20,       //w 2 15 0 df20
1330                   0xff95,       //w 1 15 0 ff95
1331                   0xfa00 } },{  //w 0 15 0 fa00
1332                 { 0xb000,       //w 4 15 12 b
1333                   0xff41,       //w 3 15 0 ff41
1334                   0xde20,       //w 2 15 0 de20
1335                   0x0140,       //w 1 15 0 0140
1336                   0x00bb } },{  //w 0 15 0 00bb
1337                 { 0xf000,       //w 4 15 12 f
1338                   0xdf01,       //w 3 15 0 df01
1339                   0xdf20,       //w 2 15 0 df20
1340                   0xff95,       //w 1 15 0 ff95
1341                   0xbf00 }      //w 0 15 0 bf00
1342                 }
1343         }, *p = phy_magic;
1344         unsigned int i;
1345
1346         mdio_write(ioaddr, 0x1f, 0x0001);               //w 31 2 0 1
1347         mdio_write(ioaddr, 0x15, 0x1000);               //w 21 15 0 1000
1348         mdio_write(ioaddr, 0x18, 0x65c7);               //w 24 15 0 65c7
1349         rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0);   //w 4 11 11 0
1350
1351         for (i = 0; i < ARRAY_SIZE(phy_magic); i++, p++) {
1352                 int val, pos = 4;
1353
1354                 val = (mdio_read(ioaddr, pos) & 0x0fff) | (p->regs[0] & 0xffff);
1355                 mdio_write(ioaddr, pos, val);
1356                 while (--pos >= 0)
1357                         mdio_write(ioaddr, pos, p->regs[4 - pos] & 0xffff);
1358                 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 1); //w 4 11 11 1
1359                 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1360         }
1361         mdio_write(ioaddr, 0x1f, 0x0000); //w 31 2 0 0
1362 }
1363
1364 static void rtl8169sb_hw_phy_config(void __iomem *ioaddr)
1365 {
1366         struct phy_reg phy_reg_init[] = {
1367                 { 0x1f, 0x0002 },
1368                 { 0x01, 0x90d0 },
1369                 { 0x1f, 0x0000 }
1370         };
1371
1372         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1373 }
1374
1375 static void rtl8168bb_hw_phy_config(void __iomem *ioaddr)
1376 {
1377         struct phy_reg phy_reg_init[] = {
1378                 { 0x10, 0xf41b },
1379                 { 0x1f, 0x0000 }
1380         };
1381
1382         mdio_write(ioaddr, 0x1f, 0x0001);
1383         mdio_patch(ioaddr, 0x16, 1 << 0);
1384
1385         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1386 }
1387
1388 static void rtl8168bef_hw_phy_config(void __iomem *ioaddr)
1389 {
1390         struct phy_reg phy_reg_init[] = {
1391                 { 0x1f, 0x0001 },
1392                 { 0x10, 0xf41b },
1393                 { 0x1f, 0x0000 }
1394         };
1395
1396         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1397 }
1398
1399 static void rtl8168cp_1_hw_phy_config(void __iomem *ioaddr)
1400 {
1401         struct phy_reg phy_reg_init[] = {
1402                 { 0x1f, 0x0000 },
1403                 { 0x1d, 0x0f00 },
1404                 { 0x1f, 0x0002 },
1405                 { 0x0c, 0x1ec8 },
1406                 { 0x1f, 0x0000 }
1407         };
1408
1409         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1410 }
1411
1412 static void rtl8168cp_2_hw_phy_config(void __iomem *ioaddr)
1413 {
1414         struct phy_reg phy_reg_init[] = {
1415                 { 0x1f, 0x0001 },
1416                 { 0x1d, 0x3d98 },
1417                 { 0x1f, 0x0000 }
1418         };
1419
1420         mdio_write(ioaddr, 0x1f, 0x0000);
1421         mdio_patch(ioaddr, 0x14, 1 << 5);
1422         mdio_patch(ioaddr, 0x0d, 1 << 5);
1423
1424         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1425 }
1426
1427 static void rtl8168c_1_hw_phy_config(void __iomem *ioaddr)
1428 {
1429         struct phy_reg phy_reg_init[] = {
1430                 { 0x1f, 0x0001 },
1431                 { 0x12, 0x2300 },
1432                 { 0x1f, 0x0002 },
1433                 { 0x00, 0x88d4 },
1434                 { 0x01, 0x82b1 },
1435                 { 0x03, 0x7002 },
1436                 { 0x08, 0x9e30 },
1437                 { 0x09, 0x01f0 },
1438                 { 0x0a, 0x5500 },
1439                 { 0x0c, 0x00c8 },
1440                 { 0x1f, 0x0003 },
1441                 { 0x12, 0xc096 },
1442                 { 0x16, 0x000a },
1443                 { 0x1f, 0x0000 },
1444                 { 0x1f, 0x0000 },
1445                 { 0x09, 0x2000 },
1446                 { 0x09, 0x0000 }
1447         };
1448
1449         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1450
1451         mdio_patch(ioaddr, 0x14, 1 << 5);
1452         mdio_patch(ioaddr, 0x0d, 1 << 5);
1453         mdio_write(ioaddr, 0x1f, 0x0000);
1454 }
1455
1456 static void rtl8168c_2_hw_phy_config(void __iomem *ioaddr)
1457 {
1458         struct phy_reg phy_reg_init[] = {
1459                 { 0x1f, 0x0001 },
1460                 { 0x12, 0x2300 },
1461                 { 0x03, 0x802f },
1462                 { 0x02, 0x4f02 },
1463                 { 0x01, 0x0409 },
1464                 { 0x00, 0xf099 },
1465                 { 0x04, 0x9800 },
1466                 { 0x04, 0x9000 },
1467                 { 0x1d, 0x3d98 },
1468                 { 0x1f, 0x0002 },
1469                 { 0x0c, 0x7eb8 },
1470                 { 0x06, 0x0761 },
1471                 { 0x1f, 0x0003 },
1472                 { 0x16, 0x0f0a },
1473                 { 0x1f, 0x0000 }
1474         };
1475
1476         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1477
1478         mdio_patch(ioaddr, 0x16, 1 << 0);
1479         mdio_patch(ioaddr, 0x14, 1 << 5);
1480         mdio_patch(ioaddr, 0x0d, 1 << 5);
1481         mdio_write(ioaddr, 0x1f, 0x0000);
1482 }
1483
1484 static void rtl8168c_3_hw_phy_config(void __iomem *ioaddr)
1485 {
1486         struct phy_reg phy_reg_init[] = {
1487                 { 0x1f, 0x0001 },
1488                 { 0x12, 0x2300 },
1489                 { 0x1d, 0x3d98 },
1490                 { 0x1f, 0x0002 },
1491                 { 0x0c, 0x7eb8 },
1492                 { 0x06, 0x5461 },
1493                 { 0x1f, 0x0003 },
1494                 { 0x16, 0x0f0a },
1495                 { 0x1f, 0x0000 }
1496         };
1497
1498         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1499
1500         mdio_patch(ioaddr, 0x16, 1 << 0);
1501         mdio_patch(ioaddr, 0x14, 1 << 5);
1502         mdio_patch(ioaddr, 0x0d, 1 << 5);
1503         mdio_write(ioaddr, 0x1f, 0x0000);
1504 }
1505
1506 static void rtl8168c_4_hw_phy_config(void __iomem *ioaddr)
1507 {
1508         rtl8168c_3_hw_phy_config(ioaddr);
1509 }
1510
1511 static void rtl8168d_hw_phy_config(void __iomem *ioaddr)
1512 {
1513         struct phy_reg phy_reg_init_0[] = {
1514                 { 0x1f, 0x0001 },
1515                 { 0x09, 0x2770 },
1516                 { 0x08, 0x04d0 },
1517                 { 0x0b, 0xad15 },
1518                 { 0x0c, 0x5bf0 },
1519                 { 0x1c, 0xf101 },
1520                 { 0x1f, 0x0003 },
1521                 { 0x14, 0x94d7 },
1522                 { 0x12, 0xf4d6 },
1523                 { 0x09, 0xca0f },
1524                 { 0x1f, 0x0002 },
1525                 { 0x0b, 0x0b10 },
1526                 { 0x0c, 0xd1f7 },
1527                 { 0x1f, 0x0002 },
1528                 { 0x06, 0x5461 },
1529                 { 0x1f, 0x0002 },
1530                 { 0x05, 0x6662 },
1531                 { 0x1f, 0x0000 },
1532                 { 0x14, 0x0060 },
1533                 { 0x1f, 0x0000 },
1534                 { 0x0d, 0xf8a0 },
1535                 { 0x1f, 0x0005 },
1536                 { 0x05, 0xffc2 }
1537         };
1538
1539         rtl_phy_write(ioaddr, phy_reg_init_0, ARRAY_SIZE(phy_reg_init_0));
1540
1541         if (mdio_read(ioaddr, 0x06) == 0xc400) {
1542                 struct phy_reg phy_reg_init_1[] = {
1543                         { 0x1f, 0x0005 },
1544                         { 0x01, 0x0300 },
1545                         { 0x1f, 0x0000 },
1546                         { 0x11, 0x401c },
1547                         { 0x16, 0x4100 },
1548                         { 0x1f, 0x0005 },
1549                         { 0x07, 0x0010 },
1550                         { 0x05, 0x83dc },
1551                         { 0x06, 0x087d },
1552                         { 0x05, 0x8300 },
1553                         { 0x06, 0x0101 },
1554                         { 0x06, 0x05f8 },
1555                         { 0x06, 0xf9fa },
1556                         { 0x06, 0xfbef },
1557                         { 0x06, 0x79e2 },
1558                         { 0x06, 0x835f },
1559                         { 0x06, 0xe0f8 },
1560                         { 0x06, 0x9ae1 },
1561                         { 0x06, 0xf89b },
1562                         { 0x06, 0xef31 },
1563                         { 0x06, 0x3b65 },
1564                         { 0x06, 0xaa07 },
1565                         { 0x06, 0x81e4 },
1566                         { 0x06, 0xf89a },
1567                         { 0x06, 0xe5f8 },
1568                         { 0x06, 0x9baf },
1569                         { 0x06, 0x06ae },
1570                         { 0x05, 0x83dc },
1571                         { 0x06, 0x8300 },
1572                 };
1573
1574                 rtl_phy_write(ioaddr, phy_reg_init_1,
1575                               ARRAY_SIZE(phy_reg_init_1));
1576         }
1577
1578         mdio_write(ioaddr, 0x1f, 0x0000);
1579 }
1580
1581 static void rtl8102e_hw_phy_config(void __iomem *ioaddr)
1582 {
1583         struct phy_reg phy_reg_init[] = {
1584                 { 0x1f, 0x0003 },
1585                 { 0x08, 0x441d },
1586                 { 0x01, 0x9100 },
1587                 { 0x1f, 0x0000 }
1588         };
1589
1590         mdio_write(ioaddr, 0x1f, 0x0000);
1591         mdio_patch(ioaddr, 0x11, 1 << 12);
1592         mdio_patch(ioaddr, 0x19, 1 << 13);
1593
1594         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1595 }
1596
1597 static void rtl_hw_phy_config(struct net_device *dev)
1598 {
1599         struct rtl8169_private *tp = netdev_priv(dev);
1600         void __iomem *ioaddr = tp->mmio_addr;
1601
1602         rtl8169_print_mac_version(tp);
1603
1604         switch (tp->mac_version) {
1605         case RTL_GIGA_MAC_VER_01:
1606                 break;
1607         case RTL_GIGA_MAC_VER_02:
1608         case RTL_GIGA_MAC_VER_03:
1609                 rtl8169s_hw_phy_config(ioaddr);
1610                 break;
1611         case RTL_GIGA_MAC_VER_04:
1612                 rtl8169sb_hw_phy_config(ioaddr);
1613                 break;
1614         case RTL_GIGA_MAC_VER_07:
1615         case RTL_GIGA_MAC_VER_08:
1616         case RTL_GIGA_MAC_VER_09:
1617                 rtl8102e_hw_phy_config(ioaddr);
1618                 break;
1619         case RTL_GIGA_MAC_VER_11:
1620                 rtl8168bb_hw_phy_config(ioaddr);
1621                 break;
1622         case RTL_GIGA_MAC_VER_12:
1623                 rtl8168bef_hw_phy_config(ioaddr);
1624                 break;
1625         case RTL_GIGA_MAC_VER_17:
1626                 rtl8168bef_hw_phy_config(ioaddr);
1627                 break;
1628         case RTL_GIGA_MAC_VER_18:
1629                 rtl8168cp_1_hw_phy_config(ioaddr);
1630                 break;
1631         case RTL_GIGA_MAC_VER_19:
1632                 rtl8168c_1_hw_phy_config(ioaddr);
1633                 break;
1634         case RTL_GIGA_MAC_VER_20:
1635                 rtl8168c_2_hw_phy_config(ioaddr);
1636                 break;
1637         case RTL_GIGA_MAC_VER_21:
1638                 rtl8168c_3_hw_phy_config(ioaddr);
1639                 break;
1640         case RTL_GIGA_MAC_VER_22:
1641                 rtl8168c_4_hw_phy_config(ioaddr);
1642                 break;
1643         case RTL_GIGA_MAC_VER_23:
1644         case RTL_GIGA_MAC_VER_24:
1645                 rtl8168cp_2_hw_phy_config(ioaddr);
1646                 break;
1647         case RTL_GIGA_MAC_VER_25:
1648                 rtl8168d_hw_phy_config(ioaddr);
1649                 break;
1650
1651         default:
1652                 break;
1653         }
1654 }
1655
1656 static void rtl8169_phy_timer(unsigned long __opaque)
1657 {
1658         struct net_device *dev = (struct net_device *)__opaque;
1659         struct rtl8169_private *tp = netdev_priv(dev);
1660         struct timer_list *timer = &tp->timer;
1661         void __iomem *ioaddr = tp->mmio_addr;
1662         unsigned long timeout = RTL8169_PHY_TIMEOUT;
1663
1664         assert(tp->mac_version > RTL_GIGA_MAC_VER_01);
1665
1666         if (!(tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
1667                 return;
1668
1669         spin_lock_irq(&tp->lock);
1670
1671         if (tp->phy_reset_pending(ioaddr)) {
1672                 /*
1673                  * A busy loop could burn quite a few cycles on nowadays CPU.
1674                  * Let's delay the execution of the timer for a few ticks.
1675                  */
1676                 timeout = HZ/10;
1677                 goto out_mod_timer;
1678         }
1679
1680         if (tp->link_ok(ioaddr))
1681                 goto out_unlock;
1682
1683         if (netif_msg_link(tp))
1684                 printk(KERN_WARNING "%s: PHY reset until link up\n", dev->name);
1685
1686         tp->phy_reset_enable(ioaddr);
1687
1688 out_mod_timer:
1689         mod_timer(timer, jiffies + timeout);
1690 out_unlock:
1691         spin_unlock_irq(&tp->lock);
1692 }
1693
1694 static inline void rtl8169_delete_timer(struct net_device *dev)
1695 {
1696         struct rtl8169_private *tp = netdev_priv(dev);
1697         struct timer_list *timer = &tp->timer;
1698
1699         if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1700                 return;
1701
1702         del_timer_sync(timer);
1703 }
1704
1705 static inline void rtl8169_request_timer(struct net_device *dev)
1706 {
1707         struct rtl8169_private *tp = netdev_priv(dev);
1708         struct timer_list *timer = &tp->timer;
1709
1710         if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1711                 return;
1712
1713         mod_timer(timer, jiffies + RTL8169_PHY_TIMEOUT);
1714 }
1715
1716 #ifdef CONFIG_NET_POLL_CONTROLLER
1717 /*
1718  * Polling 'interrupt' - used by things like netconsole to send skbs
1719  * without having to re-enable interrupts. It's not called while
1720  * the interrupt routine is executing.
1721  */
1722 static void rtl8169_netpoll(struct net_device *dev)
1723 {
1724         struct rtl8169_private *tp = netdev_priv(dev);
1725         struct pci_dev *pdev = tp->pci_dev;
1726
1727         disable_irq(pdev->irq);
1728         rtl8169_interrupt(pdev->irq, dev);
1729         enable_irq(pdev->irq);
1730 }
1731 #endif
1732
1733 static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
1734                                   void __iomem *ioaddr)
1735 {
1736         iounmap(ioaddr);
1737         pci_release_regions(pdev);
1738         pci_disable_device(pdev);
1739         free_netdev(dev);
1740 }
1741
1742 static void rtl8169_phy_reset(struct net_device *dev,
1743                               struct rtl8169_private *tp)
1744 {
1745         void __iomem *ioaddr = tp->mmio_addr;
1746         unsigned int i;
1747
1748         tp->phy_reset_enable(ioaddr);
1749         for (i = 0; i < 100; i++) {
1750                 if (!tp->phy_reset_pending(ioaddr))
1751                         return;
1752                 msleep(1);
1753         }
1754         if (netif_msg_link(tp))
1755                 printk(KERN_ERR "%s: PHY reset failed.\n", dev->name);
1756 }
1757
1758 static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
1759 {
1760         void __iomem *ioaddr = tp->mmio_addr;
1761
1762         rtl_hw_phy_config(dev);
1763
1764         if (tp->mac_version <= RTL_GIGA_MAC_VER_06) {
1765                 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1766                 RTL_W8(0x82, 0x01);
1767         }
1768
1769         pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
1770
1771         if (tp->mac_version <= RTL_GIGA_MAC_VER_06)
1772                 pci_write_config_byte(tp->pci_dev, PCI_CACHE_LINE_SIZE, 0x08);
1773
1774         if (tp->mac_version == RTL_GIGA_MAC_VER_02) {
1775                 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1776                 RTL_W8(0x82, 0x01);
1777                 dprintk("Set PHY Reg 0x0bh = 0x00h\n");
1778                 mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
1779         }
1780
1781         rtl8169_phy_reset(dev, tp);
1782
1783         /*
1784          * rtl8169_set_speed_xmii takes good care of the Fast Ethernet
1785          * only 8101. Don't panic.
1786          */
1787         rtl8169_set_speed(dev, AUTONEG_ENABLE, SPEED_1000, DUPLEX_FULL);
1788
1789         if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))
1790                 printk(KERN_INFO PFX "%s: TBI auto-negotiating\n", dev->name);
1791 }
1792
1793 static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
1794 {
1795         void __iomem *ioaddr = tp->mmio_addr;
1796         u32 high;
1797         u32 low;
1798
1799         low  = addr[0] | (addr[1] << 8) | (addr[2] << 16) | (addr[3] << 24);
1800         high = addr[4] | (addr[5] << 8);
1801
1802         spin_lock_irq(&tp->lock);
1803
1804         RTL_W8(Cfg9346, Cfg9346_Unlock);
1805         RTL_W32(MAC0, low);
1806         RTL_W32(MAC4, high);
1807         RTL_W8(Cfg9346, Cfg9346_Lock);
1808
1809         spin_unlock_irq(&tp->lock);
1810 }
1811
1812 static int rtl_set_mac_address(struct net_device *dev, void *p)
1813 {
1814         struct rtl8169_private *tp = netdev_priv(dev);
1815         struct sockaddr *addr = p;
1816
1817         if (!is_valid_ether_addr(addr->sa_data))
1818                 return -EADDRNOTAVAIL;
1819
1820         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1821
1822         rtl_rar_set(tp, dev->dev_addr);
1823
1824         return 0;
1825 }
1826
1827 static int rtl8169_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1828 {
1829         struct rtl8169_private *tp = netdev_priv(dev);
1830         struct mii_ioctl_data *data = if_mii(ifr);
1831
1832         if (!netif_running(dev))
1833                 return -ENODEV;
1834
1835         switch (cmd) {
1836         case SIOCGMIIPHY:
1837                 data->phy_id = 32; /* Internal PHY */
1838                 return 0;
1839
1840         case SIOCGMIIREG:
1841                 data->val_out = mdio_read(tp->mmio_addr, data->reg_num & 0x1f);
1842                 return 0;
1843
1844         case SIOCSMIIREG:
1845                 if (!capable(CAP_NET_ADMIN))
1846                         return -EPERM;
1847                 mdio_write(tp->mmio_addr, data->reg_num & 0x1f, data->val_in);
1848                 return 0;
1849         }
1850         return -EOPNOTSUPP;
1851 }
1852
1853 static const struct rtl_cfg_info {
1854         void (*hw_start)(struct net_device *);
1855         unsigned int region;
1856         unsigned int align;
1857         u16 intr_event;
1858         u16 napi_event;
1859         unsigned features;
1860 } rtl_cfg_infos [] = {
1861         [RTL_CFG_0] = {
1862                 .hw_start       = rtl_hw_start_8169,
1863                 .region         = 1,
1864                 .align          = 0,
1865                 .intr_event     = SYSErr | LinkChg | RxOverflow |
1866                                   RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1867                 .napi_event     = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1868                 .features       = RTL_FEATURE_GMII
1869         },
1870         [RTL_CFG_1] = {
1871                 .hw_start       = rtl_hw_start_8168,
1872                 .region         = 2,
1873                 .align          = 8,
1874                 .intr_event     = SYSErr | LinkChg | RxOverflow |
1875                                   TxErr | TxOK | RxOK | RxErr,
1876                 .napi_event     = TxErr | TxOK | RxOK | RxOverflow,
1877                 .features       = RTL_FEATURE_GMII | RTL_FEATURE_MSI
1878         },
1879         [RTL_CFG_2] = {
1880                 .hw_start       = rtl_hw_start_8101,
1881                 .region         = 2,
1882                 .align          = 8,
1883                 .intr_event     = SYSErr | LinkChg | RxOverflow | PCSTimeout |
1884                                   RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1885                 .napi_event     = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1886                 .features       = RTL_FEATURE_MSI
1887         }
1888 };
1889
1890 /* Cfg9346_Unlock assumed. */
1891 static unsigned rtl_try_msi(struct pci_dev *pdev, void __iomem *ioaddr,
1892                             const struct rtl_cfg_info *cfg)
1893 {
1894         unsigned msi = 0;
1895         u8 cfg2;
1896
1897         cfg2 = RTL_R8(Config2) & ~MSIEnable;
1898         if (cfg->features & RTL_FEATURE_MSI) {
1899                 if (pci_enable_msi(pdev)) {
1900                         dev_info(&pdev->dev, "no MSI. Back to INTx.\n");
1901                 } else {
1902                         cfg2 |= MSIEnable;
1903                         msi = RTL_FEATURE_MSI;
1904                 }
1905         }
1906         RTL_W8(Config2, cfg2);
1907         return msi;
1908 }
1909
1910 static void rtl_disable_msi(struct pci_dev *pdev, struct rtl8169_private *tp)
1911 {
1912         if (tp->features & RTL_FEATURE_MSI) {
1913                 pci_disable_msi(pdev);
1914                 tp->features &= ~RTL_FEATURE_MSI;
1915         }
1916 }
1917
1918 static int __devinit
1919 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1920 {
1921         const struct rtl_cfg_info *cfg = rtl_cfg_infos + ent->driver_data;
1922         const unsigned int region = cfg->region;
1923         struct rtl8169_private *tp;
1924         struct mii_if_info *mii;
1925         struct net_device *dev;
1926         void __iomem *ioaddr;
1927         unsigned int i;
1928         int rc;
1929
1930         if (netif_msg_drv(&debug)) {
1931                 printk(KERN_INFO "%s Gigabit Ethernet driver %s loaded\n",
1932                        MODULENAME, RTL8169_VERSION);
1933         }
1934
1935         dev = alloc_etherdev(sizeof (*tp));
1936         if (!dev) {
1937                 if (netif_msg_drv(&debug))
1938                         dev_err(&pdev->dev, "unable to alloc new ethernet\n");
1939                 rc = -ENOMEM;
1940                 goto out;
1941         }
1942
1943         SET_NETDEV_DEV(dev, &pdev->dev);
1944         tp = netdev_priv(dev);
1945         tp->dev = dev;
1946         tp->pci_dev = pdev;
1947         tp->msg_enable = netif_msg_init(debug.msg_enable, R8169_MSG_DEFAULT);
1948
1949         mii = &tp->mii;
1950         mii->dev = dev;
1951         mii->mdio_read = rtl_mdio_read;
1952         mii->mdio_write = rtl_mdio_write;
1953         mii->phy_id_mask = 0x1f;
1954         mii->reg_num_mask = 0x1f;
1955         mii->supports_gmii = !!(cfg->features & RTL_FEATURE_GMII);
1956
1957         /* enable device (incl. PCI PM wakeup and hotplug setup) */
1958         rc = pci_enable_device(pdev);
1959         if (rc < 0) {
1960                 if (netif_msg_probe(tp))
1961                         dev_err(&pdev->dev, "enable failure\n");
1962                 goto err_out_free_dev_1;
1963         }
1964
1965         rc = pci_set_mwi(pdev);
1966         if (rc < 0)
1967                 goto err_out_disable_2;
1968
1969         /* make sure PCI base addr 1 is MMIO */
1970         if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
1971                 if (netif_msg_probe(tp)) {
1972                         dev_err(&pdev->dev,
1973                                 "region #%d not an MMIO resource, aborting\n",
1974                                 region);
1975                 }
1976                 rc = -ENODEV;
1977                 goto err_out_mwi_3;
1978         }
1979
1980         /* check for weird/broken PCI region reporting */
1981         if (pci_resource_len(pdev, region) < R8169_REGS_SIZE) {
1982                 if (netif_msg_probe(tp)) {
1983                         dev_err(&pdev->dev,
1984                                 "Invalid PCI region size(s), aborting\n");
1985                 }
1986                 rc = -ENODEV;
1987                 goto err_out_mwi_3;
1988         }
1989
1990         rc = pci_request_regions(pdev, MODULENAME);
1991         if (rc < 0) {
1992                 if (netif_msg_probe(tp))
1993                         dev_err(&pdev->dev, "could not request regions.\n");
1994                 goto err_out_mwi_3;
1995         }
1996
1997         tp->cp_cmd = PCIMulRW | RxChkSum;
1998
1999         if ((sizeof(dma_addr_t) > 4) &&
2000             !pci_set_dma_mask(pdev, DMA_64BIT_MASK) && use_dac) {
2001                 tp->cp_cmd |= PCIDAC;
2002                 dev->features |= NETIF_F_HIGHDMA;
2003         } else {
2004                 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2005                 if (rc < 0) {
2006                         if (netif_msg_probe(tp)) {
2007                                 dev_err(&pdev->dev,
2008                                         "DMA configuration failed.\n");
2009                         }
2010                         goto err_out_free_res_4;
2011                 }
2012         }
2013
2014         pci_set_master(pdev);
2015
2016         /* ioremap MMIO region */
2017         ioaddr = ioremap(pci_resource_start(pdev, region), R8169_REGS_SIZE);
2018         if (!ioaddr) {
2019                 if (netif_msg_probe(tp))
2020                         dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
2021                 rc = -EIO;
2022                 goto err_out_free_res_4;
2023         }
2024
2025         tp->pcie_cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
2026         if (!tp->pcie_cap && netif_msg_probe(tp))
2027                 dev_info(&pdev->dev, "no PCI Express capability\n");
2028
2029         /* Unneeded ? Don't mess with Mrs. Murphy. */
2030         rtl8169_irq_mask_and_ack(ioaddr);
2031
2032         /* Soft reset the chip. */
2033         RTL_W8(ChipCmd, CmdReset);
2034
2035         /* Check that the chip has finished the reset. */
2036         for (i = 0; i < 100; i++) {
2037                 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
2038                         break;
2039                 msleep_interruptible(1);
2040         }
2041
2042         /* Identify chip attached to board */
2043         rtl8169_get_mac_version(tp, ioaddr);
2044
2045         rtl8169_print_mac_version(tp);
2046
2047         for (i = 0; i < ARRAY_SIZE(rtl_chip_info); i++) {
2048                 if (tp->mac_version == rtl_chip_info[i].mac_version)
2049                         break;
2050         }
2051         if (i == ARRAY_SIZE(rtl_chip_info)) {
2052                 /* Unknown chip: assume array element #0, original RTL-8169 */
2053                 if (netif_msg_probe(tp)) {
2054                         dev_printk(KERN_DEBUG, &pdev->dev,
2055                                 "unknown chip version, assuming %s\n",
2056                                 rtl_chip_info[0].name);
2057                 }
2058                 i = 0;
2059         }
2060         tp->chipset = i;
2061
2062         RTL_W8(Cfg9346, Cfg9346_Unlock);
2063         RTL_W8(Config1, RTL_R8(Config1) | PMEnable);
2064         RTL_W8(Config5, RTL_R8(Config5) & PMEStatus);
2065         if ((RTL_R8(Config3) & (LinkUp | MagicPacket)) != 0)
2066                 tp->features |= RTL_FEATURE_WOL;
2067         if ((RTL_R8(Config5) & (UWF | BWF | MWF)) != 0)
2068                 tp->features |= RTL_FEATURE_WOL;
2069         tp->features |= rtl_try_msi(pdev, ioaddr, cfg);
2070         RTL_W8(Cfg9346, Cfg9346_Lock);
2071
2072         if ((tp->mac_version <= RTL_GIGA_MAC_VER_06) &&
2073             (RTL_R8(PHYstatus) & TBI_Enable)) {
2074                 tp->set_speed = rtl8169_set_speed_tbi;
2075                 tp->get_settings = rtl8169_gset_tbi;
2076                 tp->phy_reset_enable = rtl8169_tbi_reset_enable;
2077                 tp->phy_reset_pending = rtl8169_tbi_reset_pending;
2078                 tp->link_ok = rtl8169_tbi_link_ok;
2079
2080                 tp->phy_1000_ctrl_reg = ADVERTISE_1000FULL; /* Implied by TBI */
2081         } else {
2082                 tp->set_speed = rtl8169_set_speed_xmii;
2083                 tp->get_settings = rtl8169_gset_xmii;
2084                 tp->phy_reset_enable = rtl8169_xmii_reset_enable;
2085                 tp->phy_reset_pending = rtl8169_xmii_reset_pending;
2086                 tp->link_ok = rtl8169_xmii_link_ok;
2087
2088                 dev->do_ioctl = rtl8169_ioctl;
2089         }
2090
2091         spin_lock_init(&tp->lock);
2092
2093         tp->mmio_addr = ioaddr;
2094
2095         /* Get MAC address */
2096         for (i = 0; i < MAC_ADDR_LEN; i++)
2097                 dev->dev_addr[i] = RTL_R8(MAC0 + i);
2098         memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
2099
2100         dev->open = rtl8169_open;
2101         dev->hard_start_xmit = rtl8169_start_xmit;
2102         dev->get_stats = rtl8169_get_stats;
2103         SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
2104         dev->stop = rtl8169_close;
2105         dev->tx_timeout = rtl8169_tx_timeout;
2106         dev->set_multicast_list = rtl_set_rx_mode;
2107         dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
2108         dev->irq = pdev->irq;
2109         dev->base_addr = (unsigned long) ioaddr;
2110         dev->change_mtu = rtl8169_change_mtu;
2111         dev->set_mac_address = rtl_set_mac_address;
2112
2113         netif_napi_add(dev, &tp->napi, rtl8169_poll, R8169_NAPI_WEIGHT);
2114
2115 #ifdef CONFIG_R8169_VLAN
2116         dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
2117         dev->vlan_rx_register = rtl8169_vlan_rx_register;
2118 #endif
2119
2120 #ifdef CONFIG_NET_POLL_CONTROLLER
2121         dev->poll_controller = rtl8169_netpoll;
2122 #endif
2123
2124         tp->intr_mask = 0xffff;
2125         tp->align = cfg->align;
2126         tp->hw_start = cfg->hw_start;
2127         tp->intr_event = cfg->intr_event;
2128         tp->napi_event = cfg->napi_event;
2129
2130         init_timer(&tp->timer);
2131         tp->timer.data = (unsigned long) dev;
2132         tp->timer.function = rtl8169_phy_timer;
2133
2134         rc = register_netdev(dev);
2135         if (rc < 0)
2136                 goto err_out_msi_5;
2137
2138         pci_set_drvdata(pdev, dev);
2139
2140         if (netif_msg_probe(tp)) {
2141                 u32 xid = RTL_R32(TxConfig) & 0x7cf0f8ff;
2142
2143                 printk(KERN_INFO "%s: %s at 0x%lx, "
2144                        "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
2145                        "XID %08x IRQ %d\n",
2146                        dev->name,
2147                        rtl_chip_info[tp->chipset].name,
2148                        dev->base_addr,
2149                        dev->dev_addr[0], dev->dev_addr[1],
2150                        dev->dev_addr[2], dev->dev_addr[3],
2151                        dev->dev_addr[4], dev->dev_addr[5], xid, dev->irq);
2152         }
2153
2154         rtl8169_init_phy(dev, tp);
2155         device_set_wakeup_enable(&pdev->dev, tp->features & RTL_FEATURE_WOL);
2156
2157 out:
2158         return rc;
2159
2160 err_out_msi_5:
2161         rtl_disable_msi(pdev, tp);
2162         iounmap(ioaddr);
2163 err_out_free_res_4:
2164         pci_release_regions(pdev);
2165 err_out_mwi_3:
2166         pci_clear_mwi(pdev);
2167 err_out_disable_2:
2168         pci_disable_device(pdev);
2169 err_out_free_dev_1:
2170         free_netdev(dev);
2171         goto out;
2172 }
2173
2174 static void __devexit rtl8169_remove_one(struct pci_dev *pdev)
2175 {
2176         struct net_device *dev = pci_get_drvdata(pdev);
2177         struct rtl8169_private *tp = netdev_priv(dev);
2178
2179         flush_scheduled_work();
2180
2181         unregister_netdev(dev);
2182         rtl_disable_msi(pdev, tp);
2183         rtl8169_release_board(pdev, dev, tp->mmio_addr);
2184         pci_set_drvdata(pdev, NULL);
2185 }
2186
2187 static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
2188                                   struct net_device *dev)
2189 {
2190         unsigned int mtu = dev->mtu;
2191
2192         tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
2193 }
2194
2195 static int rtl8169_open(struct net_device *dev)
2196 {
2197         struct rtl8169_private *tp = netdev_priv(dev);
2198         struct pci_dev *pdev = tp->pci_dev;
2199         int retval = -ENOMEM;
2200
2201
2202         rtl8169_set_rxbufsize(tp, dev);
2203
2204         /*
2205          * Rx and Tx desscriptors needs 256 bytes alignment.
2206          * pci_alloc_consistent provides more.
2207          */
2208         tp->TxDescArray = pci_alloc_consistent(pdev, R8169_TX_RING_BYTES,
2209                                                &tp->TxPhyAddr);
2210         if (!tp->TxDescArray)
2211                 goto out;
2212
2213         tp->RxDescArray = pci_alloc_consistent(pdev, R8169_RX_RING_BYTES,
2214                                                &tp->RxPhyAddr);
2215         if (!tp->RxDescArray)
2216                 goto err_free_tx_0;
2217
2218         retval = rtl8169_init_ring(dev);
2219         if (retval < 0)
2220                 goto err_free_rx_1;
2221
2222         INIT_DELAYED_WORK(&tp->task, NULL);
2223
2224         smp_mb();
2225
2226         retval = request_irq(dev->irq, rtl8169_interrupt,
2227                              (tp->features & RTL_FEATURE_MSI) ? 0 : IRQF_SHARED,
2228                              dev->name, dev);
2229         if (retval < 0)
2230                 goto err_release_ring_2;
2231
2232         napi_enable(&tp->napi);
2233
2234         rtl_hw_start(dev);
2235
2236         rtl8169_request_timer(dev);
2237
2238         rtl8169_check_link_status(dev, tp, tp->mmio_addr);
2239 out:
2240         return retval;
2241
2242 err_release_ring_2:
2243         rtl8169_rx_clear(tp);
2244 err_free_rx_1:
2245         pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
2246                             tp->RxPhyAddr);
2247 err_free_tx_0:
2248         pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
2249                             tp->TxPhyAddr);
2250         goto out;
2251 }
2252
2253 static void rtl8169_hw_reset(void __iomem *ioaddr)
2254 {
2255         /* Disable interrupts */
2256         rtl8169_irq_mask_and_ack(ioaddr);
2257
2258         /* Reset the chipset */
2259         RTL_W8(ChipCmd, CmdReset);
2260
2261         /* PCI commit */
2262         RTL_R8(ChipCmd);
2263 }
2264
2265 static void rtl_set_rx_tx_config_registers(struct rtl8169_private *tp)
2266 {
2267         void __iomem *ioaddr = tp->mmio_addr;
2268         u32 cfg = rtl8169_rx_config;
2269
2270         cfg |= (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
2271         RTL_W32(RxConfig, cfg);
2272
2273         /* Set DMA burst size and Interframe Gap Time */
2274         RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
2275                 (InterFrameGap << TxInterFrameGapShift));
2276 }
2277
2278 static void rtl_hw_start(struct net_device *dev)
2279 {
2280         struct rtl8169_private *tp = netdev_priv(dev);
2281         void __iomem *ioaddr = tp->mmio_addr;
2282         unsigned int i;
2283
2284         /* Soft reset the chip. */
2285         RTL_W8(ChipCmd, CmdReset);
2286
2287         /* Check that the chip has finished the reset. */
2288         for (i = 0; i < 100; i++) {
2289                 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
2290                         break;
2291                 msleep_interruptible(1);
2292         }
2293
2294         tp->hw_start(dev);
2295
2296         netif_start_queue(dev);
2297 }
2298
2299
2300 static void rtl_set_rx_tx_desc_registers(struct rtl8169_private *tp,
2301                                          void __iomem *ioaddr)
2302 {
2303         /*
2304          * Magic spell: some iop3xx ARM board needs the TxDescAddrHigh
2305          * register to be written before TxDescAddrLow to work.
2306          * Switching from MMIO to I/O access fixes the issue as well.
2307          */
2308         RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr) >> 32);
2309         RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr) & DMA_32BIT_MASK);
2310         RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr) >> 32);
2311         RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr) & DMA_32BIT_MASK);
2312 }
2313
2314 static u16 rtl_rw_cpluscmd(void __iomem *ioaddr)
2315 {
2316         u16 cmd;
2317
2318         cmd = RTL_R16(CPlusCmd);
2319         RTL_W16(CPlusCmd, cmd);
2320         return cmd;
2321 }
2322
2323 static void rtl_set_rx_max_size(void __iomem *ioaddr)
2324 {
2325         /* Low hurts. Let's disable the filtering. */
2326         RTL_W16(RxMaxSize, 16383);
2327 }
2328
2329 static void rtl8169_set_magic_reg(void __iomem *ioaddr, unsigned mac_version)
2330 {
2331         struct {
2332                 u32 mac_version;
2333                 u32 clk;
2334                 u32 val;
2335         } cfg2_info [] = {
2336                 { RTL_GIGA_MAC_VER_05, PCI_Clock_33MHz, 0x000fff00 }, // 8110SCd
2337                 { RTL_GIGA_MAC_VER_05, PCI_Clock_66MHz, 0x000fffff },
2338                 { RTL_GIGA_MAC_VER_06, PCI_Clock_33MHz, 0x00ffff00 }, // 8110SCe
2339                 { RTL_GIGA_MAC_VER_06, PCI_Clock_66MHz, 0x00ffffff }
2340         }, *p = cfg2_info;
2341         unsigned int i;
2342         u32 clk;
2343
2344         clk = RTL_R8(Config2) & PCI_Clock_66MHz;
2345         for (i = 0; i < ARRAY_SIZE(cfg2_info); i++, p++) {
2346                 if ((p->mac_version == mac_version) && (p->clk == clk)) {
2347                         RTL_W32(0x7c, p->val);
2348                         break;
2349                 }
2350         }
2351 }
2352
2353 static void rtl_hw_start_8169(struct net_device *dev)
2354 {
2355         struct rtl8169_private *tp = netdev_priv(dev);
2356         void __iomem *ioaddr = tp->mmio_addr;
2357         struct pci_dev *pdev = tp->pci_dev;
2358
2359         if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
2360                 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) | PCIMulRW);
2361                 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x08);
2362         }
2363
2364         RTL_W8(Cfg9346, Cfg9346_Unlock);
2365         if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2366             (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2367             (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2368             (tp->mac_version == RTL_GIGA_MAC_VER_04))
2369                 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2370
2371         RTL_W8(EarlyTxThres, EarlyTxThld);
2372
2373         rtl_set_rx_max_size(ioaddr);
2374
2375         if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2376             (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2377             (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2378             (tp->mac_version == RTL_GIGA_MAC_VER_04))
2379                 rtl_set_rx_tx_config_registers(tp);
2380
2381         tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2382
2383         if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2384             (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
2385                 dprintk("Set MAC Reg C+CR Offset 0xE0. "
2386                         "Bit-3 and bit-14 MUST be 1\n");
2387                 tp->cp_cmd |= (1 << 14);
2388         }
2389
2390         RTL_W16(CPlusCmd, tp->cp_cmd);
2391
2392         rtl8169_set_magic_reg(ioaddr, tp->mac_version);
2393
2394         /*
2395          * Undocumented corner. Supposedly:
2396          * (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
2397          */
2398         RTL_W16(IntrMitigate, 0x0000);
2399
2400         rtl_set_rx_tx_desc_registers(tp, ioaddr);
2401
2402         if ((tp->mac_version != RTL_GIGA_MAC_VER_01) &&
2403             (tp->mac_version != RTL_GIGA_MAC_VER_02) &&
2404             (tp->mac_version != RTL_GIGA_MAC_VER_03) &&
2405             (tp->mac_version != RTL_GIGA_MAC_VER_04)) {
2406                 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2407                 rtl_set_rx_tx_config_registers(tp);
2408         }
2409
2410         RTL_W8(Cfg9346, Cfg9346_Lock);
2411
2412         /* Initially a 10 us delay. Turned it into a PCI commit. - FR */
2413         RTL_R8(IntrMask);
2414
2415         RTL_W32(RxMissed, 0);
2416
2417         rtl_set_rx_mode(dev);
2418
2419         /* no early-rx interrupts */
2420         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2421
2422         /* Enable all known interrupts by setting the interrupt mask. */
2423         RTL_W16(IntrMask, tp->intr_event);
2424 }
2425
2426 static void rtl_tx_performance_tweak(struct pci_dev *pdev, u16 force)
2427 {
2428         struct net_device *dev = pci_get_drvdata(pdev);
2429         struct rtl8169_private *tp = netdev_priv(dev);
2430         int cap = tp->pcie_cap;
2431
2432         if (cap) {
2433                 u16 ctl;
2434
2435                 pci_read_config_word(pdev, cap + PCI_EXP_DEVCTL, &ctl);
2436                 ctl = (ctl & ~PCI_EXP_DEVCTL_READRQ) | force;
2437                 pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL, ctl);
2438         }
2439 }
2440
2441 static void rtl_csi_access_enable(void __iomem *ioaddr)
2442 {
2443         u32 csi;
2444
2445         csi = rtl_csi_read(ioaddr, 0x070c) & 0x00ffffff;
2446         rtl_csi_write(ioaddr, 0x070c, csi | 0x27000000);
2447 }
2448
2449 struct ephy_info {
2450         unsigned int offset;
2451         u16 mask;
2452         u16 bits;
2453 };
2454
2455 static void rtl_ephy_init(void __iomem *ioaddr, struct ephy_info *e, int len)
2456 {
2457         u16 w;
2458
2459         while (len-- > 0) {
2460                 w = (rtl_ephy_read(ioaddr, e->offset) & ~e->mask) | e->bits;
2461                 rtl_ephy_write(ioaddr, e->offset, w);
2462                 e++;
2463         }
2464 }
2465
2466 static void rtl_disable_clock_request(struct pci_dev *pdev)
2467 {
2468         struct net_device *dev = pci_get_drvdata(pdev);
2469         struct rtl8169_private *tp = netdev_priv(dev);
2470         int cap = tp->pcie_cap;
2471
2472         if (cap) {
2473                 u16 ctl;
2474
2475                 pci_read_config_word(pdev, cap + PCI_EXP_LNKCTL, &ctl);
2476                 ctl &= ~PCI_EXP_LNKCTL_CLKREQ_EN;
2477                 pci_write_config_word(pdev, cap + PCI_EXP_LNKCTL, ctl);
2478         }
2479 }
2480
2481 #define R8168_CPCMD_QUIRK_MASK (\
2482         EnableBist | \
2483         Mac_dbgo_oe | \
2484         Force_half_dup | \
2485         Force_rxflow_en | \
2486         Force_txflow_en | \
2487         Cxpl_dbg_sel | \
2488         ASF | \
2489         PktCntrDisable | \
2490         Mac_dbgo_sel)
2491
2492 static void rtl_hw_start_8168bb(void __iomem *ioaddr, struct pci_dev *pdev)
2493 {
2494         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2495
2496         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2497
2498         rtl_tx_performance_tweak(pdev,
2499                 (0x5 << MAX_READ_REQUEST_SHIFT) | PCI_EXP_DEVCTL_NOSNOOP_EN);
2500 }
2501
2502 static void rtl_hw_start_8168bef(void __iomem *ioaddr, struct pci_dev *pdev)
2503 {
2504         rtl_hw_start_8168bb(ioaddr, pdev);
2505
2506         RTL_W8(EarlyTxThres, EarlyTxThld);
2507
2508         RTL_W8(Config4, RTL_R8(Config4) & ~(1 << 0));
2509 }
2510
2511 static void __rtl_hw_start_8168cp(void __iomem *ioaddr, struct pci_dev *pdev)
2512 {
2513         RTL_W8(Config1, RTL_R8(Config1) | Speed_down);
2514
2515         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2516
2517         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2518
2519         rtl_disable_clock_request(pdev);
2520
2521         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2522 }
2523
2524 static void rtl_hw_start_8168cp_1(void __iomem *ioaddr, struct pci_dev *pdev)
2525 {
2526         static struct ephy_info e_info_8168cp[] = {
2527                 { 0x01, 0,      0x0001 },
2528                 { 0x02, 0x0800, 0x1000 },
2529                 { 0x03, 0,      0x0042 },
2530                 { 0x06, 0x0080, 0x0000 },
2531                 { 0x07, 0,      0x2000 }
2532         };
2533
2534         rtl_csi_access_enable(ioaddr);
2535
2536         rtl_ephy_init(ioaddr, e_info_8168cp, ARRAY_SIZE(e_info_8168cp));
2537
2538         __rtl_hw_start_8168cp(ioaddr, pdev);
2539 }
2540
2541 static void rtl_hw_start_8168cp_2(void __iomem *ioaddr, struct pci_dev *pdev)
2542 {
2543         rtl_csi_access_enable(ioaddr);
2544
2545         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2546
2547         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2548
2549         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2550 }
2551
2552 static void rtl_hw_start_8168cp_3(void __iomem *ioaddr, struct pci_dev *pdev)
2553 {
2554         rtl_csi_access_enable(ioaddr);
2555
2556         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2557
2558         /* Magic. */
2559         RTL_W8(DBG_REG, 0x20);
2560
2561         RTL_W8(EarlyTxThres, EarlyTxThld);
2562
2563         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2564
2565         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2566 }
2567
2568 static void rtl_hw_start_8168c_1(void __iomem *ioaddr, struct pci_dev *pdev)
2569 {
2570         static struct ephy_info e_info_8168c_1[] = {
2571                 { 0x02, 0x0800, 0x1000 },
2572                 { 0x03, 0,      0x0002 },
2573                 { 0x06, 0x0080, 0x0000 }
2574         };
2575
2576         rtl_csi_access_enable(ioaddr);
2577
2578         RTL_W8(DBG_REG, 0x06 | FIX_NAK_1 | FIX_NAK_2);
2579
2580         rtl_ephy_init(ioaddr, e_info_8168c_1, ARRAY_SIZE(e_info_8168c_1));
2581
2582         __rtl_hw_start_8168cp(ioaddr, pdev);
2583 }
2584
2585 static void rtl_hw_start_8168c_2(void __iomem *ioaddr, struct pci_dev *pdev)
2586 {
2587         static struct ephy_info e_info_8168c_2[] = {
2588                 { 0x01, 0,      0x0001 },
2589                 { 0x03, 0x0400, 0x0220 }
2590         };
2591
2592         rtl_csi_access_enable(ioaddr);
2593
2594         rtl_ephy_init(ioaddr, e_info_8168c_2, ARRAY_SIZE(e_info_8168c_2));
2595
2596         __rtl_hw_start_8168cp(ioaddr, pdev);
2597 }
2598
2599 static void rtl_hw_start_8168c_3(void __iomem *ioaddr, struct pci_dev *pdev)
2600 {
2601         rtl_hw_start_8168c_2(ioaddr, pdev);
2602 }
2603
2604 static void rtl_hw_start_8168c_4(void __iomem *ioaddr, struct pci_dev *pdev)
2605 {
2606         rtl_csi_access_enable(ioaddr);
2607
2608         __rtl_hw_start_8168cp(ioaddr, pdev);
2609 }
2610
2611 static void rtl_hw_start_8168d(void __iomem *ioaddr, struct pci_dev *pdev)
2612 {
2613         rtl_csi_access_enable(ioaddr);
2614
2615         rtl_disable_clock_request(pdev);
2616
2617         RTL_W8(EarlyTxThres, EarlyTxThld);
2618
2619         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2620
2621         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2622 }
2623
2624 static void rtl_hw_start_8168(struct net_device *dev)
2625 {
2626         struct rtl8169_private *tp = netdev_priv(dev);
2627         void __iomem *ioaddr = tp->mmio_addr;
2628         struct pci_dev *pdev = tp->pci_dev;
2629
2630         RTL_W8(Cfg9346, Cfg9346_Unlock);
2631
2632         RTL_W8(EarlyTxThres, EarlyTxThld);
2633
2634         rtl_set_rx_max_size(ioaddr);
2635
2636         tp->cp_cmd |= RTL_R16(CPlusCmd) | PktCntrDisable | INTT_1;
2637
2638         RTL_W16(CPlusCmd, tp->cp_cmd);
2639
2640         RTL_W16(IntrMitigate, 0x5151);
2641
2642         /* Work around for RxFIFO overflow. */
2643         if (tp->mac_version == RTL_GIGA_MAC_VER_11) {
2644                 tp->intr_event |= RxFIFOOver | PCSTimeout;
2645                 tp->intr_event &= ~RxOverflow;
2646         }
2647
2648         rtl_set_rx_tx_desc_registers(tp, ioaddr);
2649
2650         rtl_set_rx_mode(dev);
2651
2652         RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
2653                 (InterFrameGap << TxInterFrameGapShift));
2654
2655         RTL_R8(IntrMask);
2656
2657         switch (tp->mac_version) {
2658         case RTL_GIGA_MAC_VER_11:
2659                 rtl_hw_start_8168bb(ioaddr, pdev);
2660         break;
2661
2662         case RTL_GIGA_MAC_VER_12:
2663         case RTL_GIGA_MAC_VER_17:
2664                 rtl_hw_start_8168bef(ioaddr, pdev);
2665         break;
2666
2667         case RTL_GIGA_MAC_VER_18:
2668                 rtl_hw_start_8168cp_1(ioaddr, pdev);
2669         break;
2670
2671         case RTL_GIGA_MAC_VER_19:
2672                 rtl_hw_start_8168c_1(ioaddr, pdev);
2673         break;
2674
2675         case RTL_GIGA_MAC_VER_20:
2676                 rtl_hw_start_8168c_2(ioaddr, pdev);
2677         break;
2678
2679         case RTL_GIGA_MAC_VER_21:
2680                 rtl_hw_start_8168c_3(ioaddr, pdev);
2681         break;
2682
2683         case RTL_GIGA_MAC_VER_22:
2684                 rtl_hw_start_8168c_4(ioaddr, pdev);
2685         break;
2686
2687         case RTL_GIGA_MAC_VER_23:
2688                 rtl_hw_start_8168cp_2(ioaddr, pdev);
2689         break;
2690
2691         case RTL_GIGA_MAC_VER_24:
2692                 rtl_hw_start_8168cp_3(ioaddr, pdev);
2693         break;
2694
2695         case RTL_GIGA_MAC_VER_25:
2696                 rtl_hw_start_8168d(ioaddr, pdev);
2697         break;
2698
2699         default:
2700                 printk(KERN_ERR PFX "%s: unknown chipset (mac_version = %d).\n",
2701                         dev->name, tp->mac_version);
2702         break;
2703         }
2704
2705         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2706
2707         RTL_W8(Cfg9346, Cfg9346_Lock);
2708
2709         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2710
2711         RTL_W16(IntrMask, tp->intr_event);
2712 }
2713
2714 #define R810X_CPCMD_QUIRK_MASK (\
2715         EnableBist | \
2716         Mac_dbgo_oe | \
2717         Force_half_dup | \
2718         Force_half_dup | \
2719         Force_txflow_en | \
2720         Cxpl_dbg_sel | \
2721         ASF | \
2722         PktCntrDisable | \
2723         PCIDAC | \
2724         PCIMulRW)
2725
2726 static void rtl_hw_start_8102e_1(void __iomem *ioaddr, struct pci_dev *pdev)
2727 {
2728         static struct ephy_info e_info_8102e_1[] = {
2729                 { 0x01, 0, 0x6e65 },
2730                 { 0x02, 0, 0x091f },
2731                 { 0x03, 0, 0xc2f9 },
2732                 { 0x06, 0, 0xafb5 },
2733                 { 0x07, 0, 0x0e00 },
2734                 { 0x19, 0, 0xec80 },
2735                 { 0x01, 0, 0x2e65 },
2736                 { 0x01, 0, 0x6e65 }
2737         };
2738         u8 cfg1;
2739
2740         rtl_csi_access_enable(ioaddr);
2741
2742         RTL_W8(DBG_REG, FIX_NAK_1);
2743
2744         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2745
2746         RTL_W8(Config1,
2747                LEDS1 | LEDS0 | Speed_down | MEMMAP | IOMAP | VPD | PMEnable);
2748         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2749
2750         cfg1 = RTL_R8(Config1);
2751         if ((cfg1 & LEDS0) && (cfg1 & LEDS1))
2752                 RTL_W8(Config1, cfg1 & ~LEDS0);
2753
2754         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2755
2756         rtl_ephy_init(ioaddr, e_info_8102e_1, ARRAY_SIZE(e_info_8102e_1));
2757 }
2758
2759 static void rtl_hw_start_8102e_2(void __iomem *ioaddr, struct pci_dev *pdev)
2760 {
2761         rtl_csi_access_enable(ioaddr);
2762
2763         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2764
2765         RTL_W8(Config1, MEMMAP | IOMAP | VPD | PMEnable);
2766         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2767
2768         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2769 }
2770
2771 static void rtl_hw_start_8102e_3(void __iomem *ioaddr, struct pci_dev *pdev)
2772 {
2773         rtl_hw_start_8102e_2(ioaddr, pdev);
2774
2775         rtl_ephy_write(ioaddr, 0x03, 0xc2f9);
2776 }
2777
2778 static void rtl_hw_start_8101(struct net_device *dev)
2779 {
2780         struct rtl8169_private *tp = netdev_priv(dev);
2781         void __iomem *ioaddr = tp->mmio_addr;
2782         struct pci_dev *pdev = tp->pci_dev;
2783
2784         if ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
2785             (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
2786                 int cap = tp->pcie_cap;
2787
2788                 if (cap) {
2789                         pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL,
2790                                               PCI_EXP_DEVCTL_NOSNOOP_EN);
2791                 }
2792         }
2793
2794         switch (tp->mac_version) {
2795         case RTL_GIGA_MAC_VER_07:
2796                 rtl_hw_start_8102e_1(ioaddr, pdev);
2797                 break;
2798
2799         case RTL_GIGA_MAC_VER_08:
2800                 rtl_hw_start_8102e_3(ioaddr, pdev);
2801                 break;
2802
2803         case RTL_GIGA_MAC_VER_09:
2804                 rtl_hw_start_8102e_2(ioaddr, pdev);
2805                 break;
2806         }
2807
2808         RTL_W8(Cfg9346, Cfg9346_Unlock);
2809
2810         RTL_W8(EarlyTxThres, EarlyTxThld);
2811
2812         rtl_set_rx_max_size(ioaddr);
2813
2814         tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2815
2816         RTL_W16(CPlusCmd, tp->cp_cmd);
2817
2818         RTL_W16(IntrMitigate, 0x0000);
2819
2820         rtl_set_rx_tx_desc_registers(tp, ioaddr);
2821
2822         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2823         rtl_set_rx_tx_config_registers(tp);
2824
2825         RTL_W8(Cfg9346, Cfg9346_Lock);
2826
2827         RTL_R8(IntrMask);
2828
2829         rtl_set_rx_mode(dev);
2830
2831         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2832
2833         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xf000);
2834
2835         RTL_W16(IntrMask, tp->intr_event);
2836 }
2837
2838 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
2839 {
2840         struct rtl8169_private *tp = netdev_priv(dev);
2841         int ret = 0;
2842
2843         if (new_mtu < ETH_ZLEN || new_mtu > SafeMtu)
2844                 return -EINVAL;
2845
2846         dev->mtu = new_mtu;
2847
2848         if (!netif_running(dev))
2849                 goto out;
2850
2851         rtl8169_down(dev);
2852
2853         rtl8169_set_rxbufsize(tp, dev);
2854
2855         ret = rtl8169_init_ring(dev);
2856         if (ret < 0)
2857                 goto out;
2858
2859         napi_enable(&tp->napi);
2860
2861         rtl_hw_start(dev);
2862
2863         rtl8169_request_timer(dev);
2864
2865 out:
2866         return ret;
2867 }
2868
2869 static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
2870 {
2871         desc->addr = cpu_to_le64(0x0badbadbadbadbadull);
2872         desc->opts1 &= ~cpu_to_le32(DescOwn | RsvdMask);
2873 }
2874
2875 static void rtl8169_free_rx_skb(struct rtl8169_private *tp,
2876                                 struct sk_buff **sk_buff, struct RxDesc *desc)
2877 {
2878         struct pci_dev *pdev = tp->pci_dev;
2879
2880         pci_unmap_single(pdev, le64_to_cpu(desc->addr), tp->rx_buf_sz,
2881                          PCI_DMA_FROMDEVICE);
2882         dev_kfree_skb(*sk_buff);
2883         *sk_buff = NULL;
2884         rtl8169_make_unusable_by_asic(desc);
2885 }
2886
2887 static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
2888 {
2889         u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
2890
2891         desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
2892 }
2893
2894 static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
2895                                        u32 rx_buf_sz)
2896 {
2897         desc->addr = cpu_to_le64(mapping);
2898         wmb();
2899         rtl8169_mark_to_asic(desc, rx_buf_sz);
2900 }
2901
2902 static struct sk_buff *rtl8169_alloc_rx_skb(struct pci_dev *pdev,
2903                                             struct net_device *dev,
2904                                             struct RxDesc *desc, int rx_buf_sz,
2905                                             unsigned int align)
2906 {
2907         struct sk_buff *skb;
2908         dma_addr_t mapping;
2909         unsigned int pad;
2910
2911         pad = align ? align : NET_IP_ALIGN;
2912
2913         skb = netdev_alloc_skb(dev, rx_buf_sz + pad);
2914         if (!skb)
2915                 goto err_out;
2916
2917         skb_reserve(skb, align ? ((pad - 1) & (unsigned long)skb->data) : pad);
2918
2919         mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
2920                                  PCI_DMA_FROMDEVICE);
2921
2922         rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
2923 out:
2924         return skb;
2925
2926 err_out:
2927         rtl8169_make_unusable_by_asic(desc);
2928         goto out;
2929 }
2930
2931 static void rtl8169_rx_clear(struct rtl8169_private *tp)
2932 {
2933         unsigned int i;
2934
2935         for (i = 0; i < NUM_RX_DESC; i++) {
2936                 if (tp->Rx_skbuff[i]) {
2937                         rtl8169_free_rx_skb(tp, tp->Rx_skbuff + i,
2938                                             tp->RxDescArray + i);
2939                 }
2940         }
2941 }
2942
2943 static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
2944                            u32 start, u32 end)
2945 {
2946         u32 cur;
2947
2948         for (cur = start; end - cur != 0; cur++) {
2949                 struct sk_buff *skb;
2950                 unsigned int i = cur % NUM_RX_DESC;
2951
2952                 WARN_ON((s32)(end - cur) < 0);
2953
2954                 if (tp->Rx_skbuff[i])
2955                         continue;
2956
2957                 skb = rtl8169_alloc_rx_skb(tp->pci_dev, dev,
2958                                            tp->RxDescArray + i,
2959                                            tp->rx_buf_sz, tp->align);
2960                 if (!skb)
2961                         break;
2962
2963                 tp->Rx_skbuff[i] = skb;
2964         }
2965         return cur - start;
2966 }
2967
2968 static inline void rtl8169_mark_as_last_descriptor(struct RxDesc *desc)
2969 {
2970         desc->opts1 |= cpu_to_le32(RingEnd);
2971 }
2972
2973 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
2974 {
2975         tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
2976 }
2977
2978 static int rtl8169_init_ring(struct net_device *dev)
2979 {
2980         struct rtl8169_private *tp = netdev_priv(dev);
2981
2982         rtl8169_init_ring_indexes(tp);
2983
2984         memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
2985         memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
2986
2987         if (rtl8169_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
2988                 goto err_out;
2989
2990         rtl8169_mark_as_last_descriptor(tp->RxDescArray + NUM_RX_DESC - 1);
2991
2992         return 0;
2993
2994 err_out:
2995         rtl8169_rx_clear(tp);
2996         return -ENOMEM;
2997 }
2998
2999 static void rtl8169_unmap_tx_skb(struct pci_dev *pdev, struct ring_info *tx_skb,
3000                                  struct TxDesc *desc)
3001 {
3002         unsigned int len = tx_skb->len;
3003
3004         pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
3005         desc->opts1 = 0x00;
3006         desc->opts2 = 0x00;
3007         desc->addr = 0x00;
3008         tx_skb->len = 0;
3009 }
3010
3011 static void rtl8169_tx_clear(struct rtl8169_private *tp)
3012 {
3013         unsigned int i;
3014
3015         for (i = tp->dirty_tx; i < tp->dirty_tx + NUM_TX_DESC; i++) {
3016                 unsigned int entry = i % NUM_TX_DESC;
3017                 struct ring_info *tx_skb = tp->tx_skb + entry;
3018                 unsigned int len = tx_skb->len;
3019
3020                 if (len) {
3021                         struct sk_buff *skb = tx_skb->skb;
3022
3023                         rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb,
3024                                              tp->TxDescArray + entry);
3025                         if (skb) {
3026                                 dev_kfree_skb(skb);
3027                                 tx_skb->skb = NULL;
3028                         }
3029                         tp->dev->stats.tx_dropped++;
3030                 }
3031         }
3032         tp->cur_tx = tp->dirty_tx = 0;
3033 }
3034
3035 static void rtl8169_schedule_work(struct net_device *dev, work_func_t task)
3036 {
3037         struct rtl8169_private *tp = netdev_priv(dev);
3038
3039         PREPARE_DELAYED_WORK(&tp->task, task);
3040         schedule_delayed_work(&tp->task, 4);
3041 }
3042
3043 static void rtl8169_wait_for_quiescence(struct net_device *dev)
3044 {
3045         struct rtl8169_private *tp = netdev_priv(dev);
3046         void __iomem *ioaddr = tp->mmio_addr;
3047
3048         synchronize_irq(dev->irq);
3049
3050         /* Wait for any pending NAPI task to complete */
3051         napi_disable(&tp->napi);
3052
3053         rtl8169_irq_mask_and_ack(ioaddr);
3054
3055         tp->intr_mask = 0xffff;
3056         RTL_W16(IntrMask, tp->intr_event);
3057         napi_enable(&tp->napi);
3058 }
3059
3060 static void rtl8169_reinit_task(struct work_struct *work)
3061 {
3062         struct rtl8169_private *tp =
3063                 container_of(work, struct rtl8169_private, task.work);
3064         struct net_device *dev = tp->dev;
3065         int ret;
3066
3067         rtnl_lock();
3068
3069         if (!netif_running(dev))
3070                 goto out_unlock;
3071
3072         rtl8169_wait_for_quiescence(dev);
3073         rtl8169_close(dev);
3074
3075         ret = rtl8169_open(dev);
3076         if (unlikely(ret < 0)) {
3077                 if (net_ratelimit() && netif_msg_drv(tp)) {
3078                         printk(KERN_ERR PFX "%s: reinit failure (status = %d)."
3079                                " Rescheduling.\n", dev->name, ret);
3080                 }
3081                 rtl8169_schedule_work(dev, rtl8169_reinit_task);
3082         }
3083
3084 out_unlock:
3085         rtnl_unlock();
3086 }
3087
3088 static void rtl8169_reset_task(struct work_struct *work)
3089 {
3090         struct rtl8169_private *tp =
3091                 container_of(work, struct rtl8169_private, task.work);
3092         struct net_device *dev = tp->dev;
3093
3094         rtnl_lock();
3095
3096         if (!netif_running(dev))
3097                 goto out_unlock;
3098
3099         rtl8169_wait_for_quiescence(dev);
3100
3101         rtl8169_rx_interrupt(dev, tp, tp->mmio_addr, ~(u32)0);
3102         rtl8169_tx_clear(tp);
3103
3104         if (tp->dirty_rx == tp->cur_rx) {
3105                 rtl8169_init_ring_indexes(tp);
3106                 rtl_hw_start(dev);
3107                 netif_wake_queue(dev);
3108                 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
3109         } else {
3110                 if (net_ratelimit() && netif_msg_intr(tp)) {
3111                         printk(KERN_EMERG PFX "%s: Rx buffers shortage\n",
3112                                dev->name);
3113                 }
3114                 rtl8169_schedule_work(dev, rtl8169_reset_task);
3115         }
3116
3117 out_unlock:
3118         rtnl_unlock();
3119 }
3120
3121 static void rtl8169_tx_timeout(struct net_device *dev)
3122 {
3123         struct rtl8169_private *tp = netdev_priv(dev);
3124
3125         rtl8169_hw_reset(tp->mmio_addr);
3126
3127         /* Let's wait a bit while any (async) irq lands on */
3128         rtl8169_schedule_work(dev, rtl8169_reset_task);
3129 }
3130
3131 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
3132                               u32 opts1)
3133 {
3134         struct skb_shared_info *info = skb_shinfo(skb);
3135         unsigned int cur_frag, entry;
3136         struct TxDesc * uninitialized_var(txd);
3137
3138         entry = tp->cur_tx;
3139         for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
3140                 skb_frag_t *frag = info->frags + cur_frag;
3141                 dma_addr_t mapping;
3142                 u32 status, len;
3143                 void *addr;
3144
3145                 entry = (entry + 1) % NUM_TX_DESC;
3146
3147                 txd = tp->TxDescArray + entry;
3148                 len = frag->size;
3149                 addr = ((void *) page_address(frag->page)) + frag->page_offset;
3150                 mapping = pci_map_single(tp->pci_dev, addr, len, PCI_DMA_TODEVICE);
3151
3152                 /* anti gcc 2.95.3 bugware (sic) */
3153                 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
3154
3155                 txd->opts1 = cpu_to_le32(status);
3156                 txd->addr = cpu_to_le64(mapping);
3157
3158                 tp->tx_skb[entry].len = len;
3159         }
3160
3161         if (cur_frag) {
3162                 tp->tx_skb[entry].skb = skb;
3163                 txd->opts1 |= cpu_to_le32(LastFrag);
3164         }
3165
3166         return cur_frag;
3167 }
3168
3169 static inline u32 rtl8169_tso_csum(struct sk_buff *skb, struct net_device *dev)
3170 {
3171         if (dev->features & NETIF_F_TSO) {
3172                 u32 mss = skb_shinfo(skb)->gso_size;
3173
3174                 if (mss)
3175                         return LargeSend | ((mss & MSSMask) << MSSShift);
3176         }
3177         if (skb->ip_summed == CHECKSUM_PARTIAL) {
3178                 const struct iphdr *ip = ip_hdr(skb);
3179
3180                 if (ip->protocol == IPPROTO_TCP)
3181                         return IPCS | TCPCS;
3182                 else if (ip->protocol == IPPROTO_UDP)
3183                         return IPCS | UDPCS;
3184                 WARN_ON(1);     /* we need a WARN() */
3185         }
3186         return 0;
3187 }
3188
3189 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev)
3190 {
3191         struct rtl8169_private *tp = netdev_priv(dev);
3192         unsigned int frags, entry = tp->cur_tx % NUM_TX_DESC;
3193         struct TxDesc *txd = tp->TxDescArray + entry;
3194         void __iomem *ioaddr = tp->mmio_addr;
3195         dma_addr_t mapping;
3196         u32 status, len;
3197         u32 opts1;
3198         int ret = NETDEV_TX_OK;
3199
3200         if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) {
3201                 if (netif_msg_drv(tp)) {
3202                         printk(KERN_ERR
3203                                "%s: BUG! Tx Ring full when queue awake!\n",
3204                                dev->name);
3205                 }
3206                 goto err_stop;
3207         }
3208
3209         if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
3210                 goto err_stop;
3211
3212         opts1 = DescOwn | rtl8169_tso_csum(skb, dev);
3213
3214         frags = rtl8169_xmit_frags(tp, skb, opts1);
3215         if (frags) {
3216                 len = skb_headlen(skb);
3217                 opts1 |= FirstFrag;
3218         } else {
3219                 len = skb->len;
3220
3221                 if (unlikely(len < ETH_ZLEN)) {
3222                         if (skb_padto(skb, ETH_ZLEN))
3223                                 goto err_update_stats;
3224                         len = ETH_ZLEN;
3225                 }
3226
3227                 opts1 |= FirstFrag | LastFrag;
3228                 tp->tx_skb[entry].skb = skb;
3229         }
3230
3231         mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
3232
3233         tp->tx_skb[entry].len = len;
3234         txd->addr = cpu_to_le64(mapping);
3235         txd->opts2 = cpu_to_le32(rtl8169_tx_vlan_tag(tp, skb));
3236
3237         wmb();
3238
3239         /* anti gcc 2.95.3 bugware (sic) */
3240         status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
3241         txd->opts1 = cpu_to_le32(status);
3242
3243         dev->trans_start = jiffies;
3244
3245         tp->cur_tx += frags + 1;
3246
3247         smp_wmb();
3248
3249         RTL_W8(TxPoll, NPQ);    /* set polling bit */
3250
3251         if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
3252                 netif_stop_queue(dev);
3253                 smp_rmb();
3254                 if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
3255                         netif_wake_queue(dev);
3256         }
3257
3258 out:
3259         return ret;
3260
3261 err_stop:
3262         netif_stop_queue(dev);
3263         ret = NETDEV_TX_BUSY;
3264 err_update_stats:
3265         dev->stats.tx_dropped++;
3266         goto out;
3267 }
3268
3269 static void rtl8169_pcierr_interrupt(struct net_device *dev)
3270 {
3271         struct rtl8169_private *tp = netdev_priv(dev);
3272         struct pci_dev *pdev = tp->pci_dev;
3273         void __iomem *ioaddr = tp->mmio_addr;
3274         u16 pci_status, pci_cmd;
3275
3276         pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
3277         pci_read_config_word(pdev, PCI_STATUS, &pci_status);
3278
3279         if (netif_msg_intr(tp)) {
3280                 printk(KERN_ERR
3281                        "%s: PCI error (cmd = 0x%04x, status = 0x%04x).\n",
3282                        dev->name, pci_cmd, pci_status);
3283         }
3284
3285         /*
3286          * The recovery sequence below admits a very elaborated explanation:
3287          * - it seems to work;
3288          * - I did not see what else could be done;
3289          * - it makes iop3xx happy.
3290          *
3291          * Feel free to adjust to your needs.
3292          */
3293         if (pdev->broken_parity_status)
3294                 pci_cmd &= ~PCI_COMMAND_PARITY;
3295         else
3296                 pci_cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY;
3297
3298         pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
3299
3300         pci_write_config_word(pdev, PCI_STATUS,
3301                 pci_status & (PCI_STATUS_DETECTED_PARITY |
3302                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
3303                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
3304
3305         /* The infamous DAC f*ckup only happens at boot time */
3306         if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
3307                 if (netif_msg_intr(tp))
3308                         printk(KERN_INFO "%s: disabling PCI DAC.\n", dev->name);
3309                 tp->cp_cmd &= ~PCIDAC;
3310                 RTL_W16(CPlusCmd, tp->cp_cmd);
3311                 dev->features &= ~NETIF_F_HIGHDMA;
3312         }
3313
3314         rtl8169_hw_reset(ioaddr);
3315
3316         rtl8169_schedule_work(dev, rtl8169_reinit_task);
3317 }
3318
3319 static void rtl8169_tx_interrupt(struct net_device *dev,
3320                                  struct rtl8169_private *tp,
3321                                  void __iomem *ioaddr)
3322 {
3323         unsigned int dirty_tx, tx_left;
3324
3325         dirty_tx = tp->dirty_tx;
3326         smp_rmb();
3327         tx_left = tp->cur_tx - dirty_tx;
3328
3329         while (tx_left > 0) {
3330                 unsigned int entry = dirty_tx % NUM_TX_DESC;
3331                 struct ring_info *tx_skb = tp->tx_skb + entry;
3332                 u32 len = tx_skb->len;
3333                 u32 status;
3334
3335                 rmb();
3336                 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
3337                 if (status & DescOwn)
3338                         break;
3339
3340                 dev->stats.tx_bytes += len;
3341                 dev->stats.tx_packets++;
3342
3343                 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb, tp->TxDescArray + entry);
3344
3345                 if (status & LastFrag) {
3346                         dev_kfree_skb_irq(tx_skb->skb);
3347                         tx_skb->skb = NULL;
3348                 }
3349                 dirty_tx++;
3350                 tx_left--;
3351         }
3352
3353         if (tp->dirty_tx != dirty_tx) {
3354                 tp->dirty_tx = dirty_tx;
3355                 smp_wmb();
3356                 if (netif_queue_stopped(dev) &&
3357                     (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
3358                         netif_wake_queue(dev);
3359                 }
3360                 /*
3361                  * 8168 hack: TxPoll requests are lost when the Tx packets are
3362                  * too close. Let's kick an extra TxPoll request when a burst
3363                  * of start_xmit activity is detected (if it is not detected,
3364                  * it is slow enough). -- FR
3365                  */
3366                 smp_rmb();
3367                 if (tp->cur_tx != dirty_tx)
3368                         RTL_W8(TxPoll, NPQ);
3369         }
3370 }
3371
3372 static inline int rtl8169_fragmented_frame(u32 status)
3373 {
3374         return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
3375 }
3376
3377 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
3378 {
3379         u32 opts1 = le32_to_cpu(desc->opts1);
3380         u32 status = opts1 & RxProtoMask;
3381
3382         if (((status == RxProtoTCP) && !(opts1 & TCPFail)) ||
3383             ((status == RxProtoUDP) && !(opts1 & UDPFail)) ||
3384             ((status == RxProtoIP) && !(opts1 & IPFail)))
3385                 skb->ip_summed = CHECKSUM_UNNECESSARY;
3386         else
3387                 skb->ip_summed = CHECKSUM_NONE;
3388 }
3389
3390 static inline bool rtl8169_try_rx_copy(struct sk_buff **sk_buff,
3391                                        struct rtl8169_private *tp, int pkt_size,
3392                                        dma_addr_t addr)
3393 {
3394         struct sk_buff *skb;
3395         bool done = false;
3396
3397         if (pkt_size >= rx_copybreak)
3398                 goto out;
3399
3400         skb = netdev_alloc_skb(tp->dev, pkt_size + NET_IP_ALIGN);
3401         if (!skb)
3402                 goto out;
3403
3404         pci_dma_sync_single_for_cpu(tp->pci_dev, addr, pkt_size,
3405                                     PCI_DMA_FROMDEVICE);
3406         skb_reserve(skb, NET_IP_ALIGN);
3407         skb_copy_from_linear_data(*sk_buff, skb->data, pkt_size);
3408         *sk_buff = skb;
3409         done = true;
3410 out:
3411         return done;
3412 }
3413
3414 static int rtl8169_rx_interrupt(struct net_device *dev,
3415                                 struct rtl8169_private *tp,
3416                                 void __iomem *ioaddr, u32 budget)
3417 {
3418         unsigned int cur_rx, rx_left;
3419         unsigned int delta, count;
3420
3421         cur_rx = tp->cur_rx;
3422         rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
3423         rx_left = min(rx_left, budget);
3424
3425         for (; rx_left > 0; rx_left--, cur_rx++) {
3426                 unsigned int entry = cur_rx % NUM_RX_DESC;
3427                 struct RxDesc *desc = tp->RxDescArray + entry;
3428                 u32 status;
3429
3430                 rmb();
3431                 status = le32_to_cpu(desc->opts1);
3432
3433                 if (status & DescOwn)
3434                         break;
3435                 if (unlikely(status & RxRES)) {
3436                         if (netif_msg_rx_err(tp)) {
3437                                 printk(KERN_INFO
3438                                        "%s: Rx ERROR. status = %08x\n",
3439                                        dev->name, status);
3440                         }
3441                         dev->stats.rx_errors++;
3442                         if (status & (RxRWT | RxRUNT))
3443                                 dev->stats.rx_length_errors++;
3444                         if (status & RxCRC)
3445                                 dev->stats.rx_crc_errors++;
3446                         if (status & RxFOVF) {
3447                                 rtl8169_schedule_work(dev, rtl8169_reset_task);
3448                                 dev->stats.rx_fifo_errors++;
3449                         }
3450                         rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3451                 } else {
3452                         struct sk_buff *skb = tp->Rx_skbuff[entry];
3453                         dma_addr_t addr = le64_to_cpu(desc->addr);
3454                         int pkt_size = (status & 0x00001FFF) - 4;
3455                         struct pci_dev *pdev = tp->pci_dev;
3456
3457                         /*
3458                          * The driver does not support incoming fragmented
3459                          * frames. They are seen as a symptom of over-mtu
3460                          * sized frames.
3461                          */
3462                         if (unlikely(rtl8169_fragmented_frame(status))) {
3463                                 dev->stats.rx_dropped++;
3464                                 dev->stats.rx_length_errors++;
3465                                 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3466                                 continue;
3467                         }
3468
3469                         rtl8169_rx_csum(skb, desc);
3470
3471                         if (rtl8169_try_rx_copy(&skb, tp, pkt_size, addr)) {
3472                                 pci_dma_sync_single_for_device(pdev, addr,
3473                                         pkt_size, PCI_DMA_FROMDEVICE);
3474                                 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3475                         } else {
3476                                 pci_unmap_single(pdev, addr, tp->rx_buf_sz,
3477                                                  PCI_DMA_FROMDEVICE);
3478                                 tp->Rx_skbuff[entry] = NULL;
3479                         }
3480
3481                         skb_put(skb, pkt_size);
3482                         skb->protocol = eth_type_trans(skb, dev);
3483
3484                         if (rtl8169_rx_vlan_skb(tp, desc, skb) < 0)
3485                                 netif_receive_skb(skb);
3486
3487                         dev->last_rx = jiffies;
3488                         dev->stats.rx_bytes += pkt_size;
3489                         dev->stats.rx_packets++;
3490                 }
3491
3492                 /* Work around for AMD plateform. */
3493                 if ((desc->opts2 & cpu_to_le32(0xfffe000)) &&
3494                     (tp->mac_version == RTL_GIGA_MAC_VER_05)) {
3495                         desc->opts2 = 0;
3496                         cur_rx++;
3497                 }
3498         }
3499
3500         count = cur_rx - tp->cur_rx;
3501         tp->cur_rx = cur_rx;
3502
3503         delta = rtl8169_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
3504         if (!delta && count && netif_msg_intr(tp))
3505                 printk(KERN_INFO "%s: no Rx buffer allocated\n", dev->name);
3506         tp->dirty_rx += delta;
3507
3508         /*
3509          * FIXME: until there is periodic timer to try and refill the ring,
3510          * a temporary shortage may definitely kill the Rx process.
3511          * - disable the asic to try and avoid an overflow and kick it again
3512          *   after refill ?
3513          * - how do others driver handle this condition (Uh oh...).
3514          */
3515         if ((tp->dirty_rx + NUM_RX_DESC == tp->cur_rx) && netif_msg_intr(tp))
3516                 printk(KERN_EMERG "%s: Rx buffers exhausted\n", dev->name);
3517
3518         return count;
3519 }
3520
3521 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
3522 {
3523         struct net_device *dev = dev_instance;
3524         struct rtl8169_private *tp = netdev_priv(dev);
3525         void __iomem *ioaddr = tp->mmio_addr;
3526         int handled = 0;
3527         int status;
3528
3529         status = RTL_R16(IntrStatus);
3530
3531         /* hotplug/major error/no more work/shared irq */
3532         if ((status == 0xffff) || !status)
3533                 goto out;
3534
3535         handled = 1;
3536
3537         if (unlikely(!netif_running(dev))) {
3538                 rtl8169_asic_down(ioaddr);
3539                 goto out;
3540         }
3541
3542         status &= tp->intr_mask;
3543         RTL_W16(IntrStatus,
3544                 (status & RxFIFOOver) ? (status | RxOverflow) : status);
3545
3546         if (!(status & tp->intr_event))
3547                 goto out;
3548
3549         /* Work around for rx fifo overflow */
3550         if (unlikely(status & RxFIFOOver) &&
3551             (tp->mac_version == RTL_GIGA_MAC_VER_11)) {
3552                 netif_stop_queue(dev);
3553                 rtl8169_tx_timeout(dev);
3554                 goto out;
3555         }
3556
3557         if (unlikely(status & SYSErr)) {
3558                 rtl8169_pcierr_interrupt(dev);
3559                 goto out;
3560         }
3561
3562         if (status & LinkChg)
3563                 rtl8169_check_link_status(dev, tp, ioaddr);
3564
3565         if (status & tp->napi_event) {
3566                 RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event);
3567                 tp->intr_mask = ~tp->napi_event;
3568
3569                 if (likely(netif_rx_schedule_prep(dev, &tp->napi)))
3570                         __netif_rx_schedule(dev, &tp->napi);
3571                 else if (netif_msg_intr(tp)) {
3572                         printk(KERN_INFO "%s: interrupt %04x in poll\n",
3573                                dev->name, status);
3574                 }
3575         }
3576 out:
3577         return IRQ_RETVAL(handled);
3578 }
3579
3580 static int rtl8169_poll(struct napi_struct *napi, int budget)
3581 {
3582         struct rtl8169_private *tp = container_of(napi, struct rtl8169_private, napi);
3583         struct net_device *dev = tp->dev;
3584         void __iomem *ioaddr = tp->mmio_addr;
3585         int work_done;
3586
3587         work_done = rtl8169_rx_interrupt(dev, tp, ioaddr, (u32) budget);
3588         rtl8169_tx_interrupt(dev, tp, ioaddr);
3589
3590         if (work_done < budget) {
3591                 netif_rx_complete(dev, napi);
3592                 tp->intr_mask = 0xffff;
3593                 /*
3594                  * 20040426: the barrier is not strictly required but the
3595                  * behavior of the irq handler could be less predictable
3596                  * without it. Btw, the lack of flush for the posted pci
3597                  * write is safe - FR
3598                  */
3599                 smp_wmb();
3600                 RTL_W16(IntrMask, tp->intr_event);
3601         }
3602
3603         return work_done;
3604 }
3605
3606 static void rtl8169_rx_missed(struct net_device *dev, void __iomem *ioaddr)
3607 {
3608         struct rtl8169_private *tp = netdev_priv(dev);
3609
3610         if (tp->mac_version > RTL_GIGA_MAC_VER_06)
3611                 return;
3612
3613         dev->stats.rx_missed_errors += (RTL_R32(RxMissed) & 0xffffff);
3614         RTL_W32(RxMissed, 0);
3615 }
3616
3617 static void rtl8169_down(struct net_device *dev)
3618 {
3619         struct rtl8169_private *tp = netdev_priv(dev);
3620         void __iomem *ioaddr = tp->mmio_addr;
3621         unsigned int intrmask;
3622
3623         rtl8169_delete_timer(dev);
3624
3625         netif_stop_queue(dev);
3626
3627         napi_disable(&tp->napi);
3628
3629 core_down:
3630         spin_lock_irq(&tp->lock);
3631
3632         rtl8169_asic_down(ioaddr);
3633
3634         rtl8169_rx_missed(dev, ioaddr);
3635
3636         spin_unlock_irq(&tp->lock);
3637
3638         synchronize_irq(dev->irq);
3639
3640         /* Give a racing hard_start_xmit a few cycles to complete. */
3641         synchronize_sched();  /* FIXME: should this be synchronize_irq()? */
3642
3643         /*
3644          * And now for the 50k$ question: are IRQ disabled or not ?
3645          *
3646          * Two paths lead here:
3647          * 1) dev->close
3648          *    -> netif_running() is available to sync the current code and the
3649          *       IRQ handler. See rtl8169_interrupt for details.
3650          * 2) dev->change_mtu
3651          *    -> rtl8169_poll can not be issued again and re-enable the
3652          *       interruptions. Let's simply issue the IRQ down sequence again.
3653          *
3654          * No loop if hotpluged or major error (0xffff).
3655          */
3656         intrmask = RTL_R16(IntrMask);
3657         if (intrmask && (intrmask != 0xffff))
3658                 goto core_down;
3659
3660         rtl8169_tx_clear(tp);
3661
3662         rtl8169_rx_clear(tp);
3663 }
3664
3665 static int rtl8169_close(struct net_device *dev)
3666 {
3667         struct rtl8169_private *tp = netdev_priv(dev);
3668         struct pci_dev *pdev = tp->pci_dev;
3669
3670         rtl8169_down(dev);
3671
3672         free_irq(dev->irq, dev);
3673
3674         pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
3675                             tp->RxPhyAddr);
3676         pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
3677                             tp->TxPhyAddr);
3678         tp->TxDescArray = NULL;
3679         tp->RxDescArray = NULL;
3680
3681         return 0;
3682 }
3683
3684 static void rtl_set_rx_mode(struct net_device *dev)
3685 {
3686         struct rtl8169_private *tp = netdev_priv(dev);
3687         void __iomem *ioaddr = tp->mmio_addr;
3688         unsigned long flags;
3689         u32 mc_filter[2];       /* Multicast hash filter */
3690         int rx_mode;
3691         u32 tmp = 0;
3692
3693         if (dev->flags & IFF_PROMISC) {
3694                 /* Unconditionally log net taps. */
3695                 if (netif_msg_link(tp)) {
3696                         printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
3697                                dev->name);
3698                 }
3699                 rx_mode =
3700                     AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
3701                     AcceptAllPhys;
3702                 mc_filter[1] = mc_filter[0] = 0xffffffff;
3703         } else if ((dev->mc_count > multicast_filter_limit)
3704                    || (dev->flags & IFF_ALLMULTI)) {
3705                 /* Too many to filter perfectly -- accept all multicasts. */
3706                 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
3707                 mc_filter[1] = mc_filter[0] = 0xffffffff;
3708         } else {
3709                 struct dev_mc_list *mclist;
3710                 unsigned int i;
3711
3712                 rx_mode = AcceptBroadcast | AcceptMyPhys;
3713                 mc_filter[1] = mc_filter[0] = 0;
3714                 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
3715                      i++, mclist = mclist->next) {
3716                         int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
3717                         mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
3718                         rx_mode |= AcceptMulticast;
3719                 }
3720         }
3721
3722         spin_lock_irqsave(&tp->lock, flags);
3723
3724         tmp = rtl8169_rx_config | rx_mode |
3725               (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
3726
3727         if (tp->mac_version > RTL_GIGA_MAC_VER_06) {
3728                 u32 data = mc_filter[0];
3729
3730                 mc_filter[0] = swab32(mc_filter[1]);
3731                 mc_filter[1] = swab32(data);
3732         }
3733
3734         RTL_W32(MAR0 + 0, mc_filter[0]);
3735         RTL_W32(MAR0 + 4, mc_filter[1]);
3736
3737         RTL_W32(RxConfig, tmp);
3738
3739         spin_unlock_irqrestore(&tp->lock, flags);
3740 }
3741
3742 /**
3743  *  rtl8169_get_stats - Get rtl8169 read/write statistics
3744  *  @dev: The Ethernet Device to get statistics for
3745  *
3746  *  Get TX/RX statistics for rtl8169
3747  */
3748 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
3749 {
3750         struct rtl8169_private *tp = netdev_priv(dev);
3751         void __iomem *ioaddr = tp->mmio_addr;
3752         unsigned long flags;
3753
3754         if (netif_running(dev)) {
3755                 spin_lock_irqsave(&tp->lock, flags);
3756                 rtl8169_rx_missed(dev, ioaddr);
3757                 spin_unlock_irqrestore(&tp->lock, flags);
3758         }
3759
3760         return &dev->stats;
3761 }
3762
3763 #ifdef CONFIG_PM
3764
3765 static int rtl8169_suspend(struct pci_dev *pdev, pm_message_t state)
3766 {
3767         struct net_device *dev = pci_get_drvdata(pdev);
3768         struct rtl8169_private *tp = netdev_priv(dev);
3769         void __iomem *ioaddr = tp->mmio_addr;
3770
3771         if (!netif_running(dev))
3772                 goto out_pci_suspend;
3773
3774         netif_device_detach(dev);
3775         netif_stop_queue(dev);
3776
3777         spin_lock_irq(&tp->lock);
3778
3779         rtl8169_asic_down(ioaddr);
3780
3781         rtl8169_rx_missed(dev, ioaddr);
3782
3783         spin_unlock_irq(&tp->lock);
3784
3785 out_pci_suspend:
3786         pci_save_state(pdev);
3787         pci_enable_wake(pdev, pci_choose_state(pdev, state),
3788                 (tp->features & RTL_FEATURE_WOL) ? 1 : 0);
3789         pci_set_power_state(pdev, pci_choose_state(pdev, state));
3790
3791         return 0;
3792 }
3793
3794 static int rtl8169_resume(struct pci_dev *pdev)
3795 {
3796         struct net_device *dev = pci_get_drvdata(pdev);
3797
3798         pci_set_power_state(pdev, PCI_D0);
3799         pci_restore_state(pdev);
3800         pci_enable_wake(pdev, PCI_D0, 0);
3801
3802         if (!netif_running(dev))
3803                 goto out;
3804
3805         netif_device_attach(dev);
3806
3807         rtl8169_schedule_work(dev, rtl8169_reset_task);
3808 out:
3809         return 0;
3810 }
3811
3812 static void rtl_shutdown(struct pci_dev *pdev)
3813 {
3814         rtl8169_suspend(pdev, PMSG_SUSPEND);
3815 }
3816
3817 #endif /* CONFIG_PM */
3818
3819 static struct pci_driver rtl8169_pci_driver = {
3820         .name           = MODULENAME,
3821         .id_table       = rtl8169_pci_tbl,
3822         .probe          = rtl8169_init_one,
3823         .remove         = __devexit_p(rtl8169_remove_one),
3824 #ifdef CONFIG_PM
3825         .suspend        = rtl8169_suspend,
3826         .resume         = rtl8169_resume,
3827         .shutdown       = rtl_shutdown,
3828 #endif
3829 };
3830
3831 static int __init rtl8169_init_module(void)
3832 {
3833         return pci_register_driver(&rtl8169_pci_driver);
3834 }
3835
3836 static void __exit rtl8169_cleanup_module(void)
3837 {
3838         pci_unregister_driver(&rtl8169_pci_driver);
3839 }
3840
3841 module_init(rtl8169_init_module);
3842 module_exit(rtl8169_cleanup_module);