drivers/net/ethernet/realtek/r8169_main.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * r8169.c: RealTek 8169/8168/8101 ethernet driver.
   4  *
   5  * Copyright (c) 2002 ShuChen <shuchen@realtek.com.tw>
   6  * Copyright (c) 2003 - 2007 Francois Romieu <romieu@fr.zoreil.com>
   7  * Copyright (c) a lot of people too. Please respect their work.
   8  *
   9  * See MAINTAINERS file for support contact information.
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/pci.h>
  14 #include <linux/netdevice.h>
  15 #include <linux/etherdevice.h>
  16 #include <linux/clk.h>
  17 #include <linux/delay.h>
  18 #include <linux/ethtool.h>
  19 #include <linux/phy.h>
  20 #include <linux/if_vlan.h>
  21 #include <linux/in.h>
  22 #include <linux/io.h>
  23 #include <linux/ip.h>
  24 #include <linux/tcp.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/pm_runtime.h>
  28 #include <linux/bitfield.h>
  29 #include <linux/prefetch.h>
  30 #include <linux/ipv6.h>
  31 #include <asm/unaligned.h>
  32 #include <net/ip6_checksum.h>
  33
  34 #include "r8169.h"
  35 #include "r8169_firmware.h"
  36
  37 #define FIRMWARE_8168D_1        "rtl_nic/rtl8168d-1.fw"
  38 #define FIRMWARE_8168D_2        "rtl_nic/rtl8168d-2.fw"
  39 #define FIRMWARE_8168E_1        "rtl_nic/rtl8168e-1.fw"
  40 #define FIRMWARE_8168E_2        "rtl_nic/rtl8168e-2.fw"
  41 #define FIRMWARE_8168E_3        "rtl_nic/rtl8168e-3.fw"
  42 #define FIRMWARE_8168F_1        "rtl_nic/rtl8168f-1.fw"
  43 #define FIRMWARE_8168F_2        "rtl_nic/rtl8168f-2.fw"
  44 #define FIRMWARE_8105E_1        "rtl_nic/rtl8105e-1.fw"
  45 #define FIRMWARE_8402_1         "rtl_nic/rtl8402-1.fw"
  46 #define FIRMWARE_8411_1         "rtl_nic/rtl8411-1.fw"
  47 #define FIRMWARE_8411_2         "rtl_nic/rtl8411-2.fw"
  48 #define FIRMWARE_8106E_1        "rtl_nic/rtl8106e-1.fw"
  49 #define FIRMWARE_8106E_2        "rtl_nic/rtl8106e-2.fw"
  50 #define FIRMWARE_8168G_2        "rtl_nic/rtl8168g-2.fw"
  51 #define FIRMWARE_8168G_3        "rtl_nic/rtl8168g-3.fw"
  52 #define FIRMWARE_8168H_1        "rtl_nic/rtl8168h-1.fw"
  53 #define FIRMWARE_8168H_2        "rtl_nic/rtl8168h-2.fw"
  54 #define FIRMWARE_8168FP_3       "rtl_nic/rtl8168fp-3.fw"
  55 #define FIRMWARE_8107E_1        "rtl_nic/rtl8107e-1.fw"
  56 #define FIRMWARE_8107E_2        "rtl_nic/rtl8107e-2.fw"
  57 #define FIRMWARE_8125A_3        "rtl_nic/rtl8125a-3.fw"
  58 #define FIRMWARE_8125B_2        "rtl_nic/rtl8125b-2.fw"
  59
  60 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
  61    The RTL chips use a 64 element hash table based on the Ethernet CRC. */
  62 #define MC_FILTER_LIMIT 32
  63
  64 #define TX_DMA_BURST    7       /* Maximum PCI burst, '7' is unlimited */
  65 #define InterFrameGap   0x03    /* 3 means InterFrameGap = the shortest one */
  66
  67 #define R8169_REGS_SIZE         256
  68 #define R8169_RX_BUF_SIZE       (SZ_16K - 1)
  69 #define NUM_TX_DESC     256     /* Number of Tx descriptor registers */
  70 #define NUM_RX_DESC     256     /* Number of Rx descriptor registers */
  71 #define R8169_TX_RING_BYTES     (NUM_TX_DESC * sizeof(struct TxDesc))
  72 #define R8169_RX_RING_BYTES     (NUM_RX_DESC * sizeof(struct RxDesc))
  73
  74 #define OCP_STD_PHY_BASE        0xa400
  75
  76 #define RTL_CFG_NO_GBIT 1
  77
  78 /* write/read MMIO register */
  79 #define RTL_W8(tp, reg, val8)   writeb((val8), tp->mmio_addr + (reg))
  80 #define RTL_W16(tp, reg, val16) writew((val16), tp->mmio_addr + (reg))
  81 #define RTL_W32(tp, reg, val32) writel((val32), tp->mmio_addr + (reg))
  82 #define RTL_R8(tp, reg)         readb(tp->mmio_addr + (reg))
  83 #define RTL_R16(tp, reg)                readw(tp->mmio_addr + (reg))
  84 #define RTL_R32(tp, reg)                readl(tp->mmio_addr + (reg))
  85
  86 #define JUMBO_4K        (4 * SZ_1K - VLAN_ETH_HLEN - ETH_FCS_LEN)
  87 #define JUMBO_6K        (6 * SZ_1K - VLAN_ETH_HLEN - ETH_FCS_LEN)
  88 #define JUMBO_7K        (7 * SZ_1K - VLAN_ETH_HLEN - ETH_FCS_LEN)
  89 #define JUMBO_9K        (9 * SZ_1K - VLAN_ETH_HLEN - ETH_FCS_LEN)
  90
  91 static const struct {
  92         const char *name;
  93         const char *fw_name;
  94 } rtl_chip_infos[] = {
  95         /* PCI devices. */
  96         [RTL_GIGA_MAC_VER_02] = {"RTL8169s"                             },
  97         [RTL_GIGA_MAC_VER_03] = {"RTL8110s"                             },
  98         [RTL_GIGA_MAC_VER_04] = {"RTL8169sb/8110sb"                     },
  99         [RTL_GIGA_MAC_VER_05] = {"RTL8169sc/8110sc"                     },
 100         [RTL_GIGA_MAC_VER_06] = {"RTL8169sc/8110sc"                     },
 101         /* PCI-E devices. */
 102         [RTL_GIGA_MAC_VER_07] = {"RTL8102e"                             },
 103         [RTL_GIGA_MAC_VER_08] = {"RTL8102e"                             },
 104         [RTL_GIGA_MAC_VER_09] = {"RTL8102e/RTL8103e"                    },
 105         [RTL_GIGA_MAC_VER_10] = {"RTL8101e"                             },
 106         [RTL_GIGA_MAC_VER_11] = {"RTL8168b/8111b"                       },
 107         [RTL_GIGA_MAC_VER_12] = {"RTL8168b/8111b"                       },
 108         [RTL_GIGA_MAC_VER_13] = {"RTL8101e/RTL8100e"                    },
 109         [RTL_GIGA_MAC_VER_14] = {"RTL8401"                              },
 110         [RTL_GIGA_MAC_VER_16] = {"RTL8101e"                             },
 111         [RTL_GIGA_MAC_VER_17] = {"RTL8168b/8111b"                       },
 112         [RTL_GIGA_MAC_VER_18] = {"RTL8168cp/8111cp"                     },
 113         [RTL_GIGA_MAC_VER_19] = {"RTL8168c/8111c"                       },
 114         [RTL_GIGA_MAC_VER_20] = {"RTL8168c/8111c"                       },
 115         [RTL_GIGA_MAC_VER_21] = {"RTL8168c/8111c"                       },
 116         [RTL_GIGA_MAC_VER_22] = {"RTL8168c/8111c"                       },
 117         [RTL_GIGA_MAC_VER_23] = {"RTL8168cp/8111cp"                     },
 118         [RTL_GIGA_MAC_VER_24] = {"RTL8168cp/8111cp"                     },
 119         [RTL_GIGA_MAC_VER_25] = {"RTL8168d/8111d",      FIRMWARE_8168D_1},
 120         [RTL_GIGA_MAC_VER_26] = {"RTL8168d/8111d",      FIRMWARE_8168D_2},
 121         [RTL_GIGA_MAC_VER_27] = {"RTL8168dp/8111dp"                     },
 122         [RTL_GIGA_MAC_VER_28] = {"RTL8168dp/8111dp"                     },
 123         [RTL_GIGA_MAC_VER_29] = {"RTL8105e",            FIRMWARE_8105E_1},
 124         [RTL_GIGA_MAC_VER_30] = {"RTL8105e",            FIRMWARE_8105E_1},
 125         [RTL_GIGA_MAC_VER_31] = {"RTL8168dp/8111dp"                     },
 126         [RTL_GIGA_MAC_VER_32] = {"RTL8168e/8111e",      FIRMWARE_8168E_1},
 127         [RTL_GIGA_MAC_VER_33] = {"RTL8168e/8111e",      FIRMWARE_8168E_2},
 128         [RTL_GIGA_MAC_VER_34] = {"RTL8168evl/8111evl",  FIRMWARE_8168E_3},
 129         [RTL_GIGA_MAC_VER_35] = {"RTL8168f/8111f",      FIRMWARE_8168F_1},
 130         [RTL_GIGA_MAC_VER_36] = {"RTL8168f/8111f",      FIRMWARE_8168F_2},
 131         [RTL_GIGA_MAC_VER_37] = {"RTL8402",             FIRMWARE_8402_1 },
 132         [RTL_GIGA_MAC_VER_38] = {"RTL8411",             FIRMWARE_8411_1 },
 133         [RTL_GIGA_MAC_VER_39] = {"RTL8106e",            FIRMWARE_8106E_1},
 134         [RTL_GIGA_MAC_VER_40] = {"RTL8168g/8111g",      FIRMWARE_8168G_2},
 135         [RTL_GIGA_MAC_VER_41] = {"RTL8168g/8111g"                       },
 136         [RTL_GIGA_MAC_VER_42] = {"RTL8168gu/8111gu",    FIRMWARE_8168G_3},
 137         [RTL_GIGA_MAC_VER_43] = {"RTL8106eus",          FIRMWARE_8106E_2},
 138         [RTL_GIGA_MAC_VER_44] = {"RTL8411b",            FIRMWARE_8411_2 },
 139         [RTL_GIGA_MAC_VER_45] = {"RTL8168h/8111h",      FIRMWARE_8168H_1},
 140         [RTL_GIGA_MAC_VER_46] = {"RTL8168h/8111h",      FIRMWARE_8168H_2},
 141         [RTL_GIGA_MAC_VER_47] = {"RTL8107e",            FIRMWARE_8107E_1},
 142         [RTL_GIGA_MAC_VER_48] = {"RTL8107e",            FIRMWARE_8107E_2},
 143         [RTL_GIGA_MAC_VER_49] = {"RTL8168ep/8111ep"                     },
 144         [RTL_GIGA_MAC_VER_50] = {"RTL8168ep/8111ep"                     },
 145         [RTL_GIGA_MAC_VER_51] = {"RTL8168ep/8111ep"                     },
 146         [RTL_GIGA_MAC_VER_52] = {"RTL8168fp/RTL8117",  FIRMWARE_8168FP_3},
 147         [RTL_GIGA_MAC_VER_53] = {"RTL8168fp/RTL8117",                   },
 148         [RTL_GIGA_MAC_VER_60] = {"RTL8125A"                             },
 149         [RTL_GIGA_MAC_VER_61] = {"RTL8125A",            FIRMWARE_8125A_3},
 150         /* reserve 62 for CFG_METHOD_4 in the vendor driver */
 151         [RTL_GIGA_MAC_VER_63] = {"RTL8125B",            FIRMWARE_8125B_2},
 152 };
 153
 154 static const struct pci_device_id rtl8169_pci_tbl[] = {
 155         { PCI_VDEVICE(REALTEK,  0x2502) },
 156         { PCI_VDEVICE(REALTEK,  0x2600) },
 157         { PCI_VDEVICE(REALTEK,  0x8129) },
 158         { PCI_VDEVICE(REALTEK,  0x8136), RTL_CFG_NO_GBIT },
 159         { PCI_VDEVICE(REALTEK,  0x8161) },
 160         { PCI_VDEVICE(REALTEK,  0x8167) },
 161         { PCI_VDEVICE(REALTEK,  0x8168) },
 162         { PCI_VDEVICE(NCUBE,    0x8168) },
 163         { PCI_VDEVICE(REALTEK,  0x8169) },
 164         { PCI_VENDOR_ID_DLINK,  0x4300,
 165                 PCI_VENDOR_ID_DLINK, 0x4b10, 0, 0 },
 166         { PCI_VDEVICE(DLINK,    0x4300) },
 167         { PCI_VDEVICE(DLINK,    0x4302) },
 168         { PCI_VDEVICE(AT,       0xc107) },
 169         { PCI_VDEVICE(USR,      0x0116) },
 170         { PCI_VENDOR_ID_LINKSYS, 0x1032, PCI_ANY_ID, 0x0024 },
 171         { 0x0001, 0x8168, PCI_ANY_ID, 0x2410 },
 172         { PCI_VDEVICE(REALTEK,  0x8125) },
 173         { PCI_VDEVICE(REALTEK,  0x3000) },
 174         {}
 175 };
 176
 177 MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);
 178
 179 enum rtl_registers {
 180         MAC0            = 0,    /* Ethernet hardware address. */
 181         MAC4            = 4,
 182         MAR0            = 8,    /* Multicast filter. */
 183         CounterAddrLow          = 0x10,
 184         CounterAddrHigh         = 0x14,
 185         TxDescStartAddrLow      = 0x20,
 186         TxDescStartAddrHigh     = 0x24,
 187         TxHDescStartAddrLow     = 0x28,
 188         TxHDescStartAddrHigh    = 0x2c,
 189         FLASH           = 0x30,
 190         ERSR            = 0x36,
 191         ChipCmd         = 0x37,
 192         TxPoll          = 0x38,
 193         IntrMask        = 0x3c,
 194         IntrStatus      = 0x3e,
 195
 196         TxConfig        = 0x40,
 197 #define TXCFG_AUTO_FIFO                 (1 << 7)        /* 8111e-vl */
 198 #define TXCFG_EMPTY                     (1 << 11)       /* 8111e-vl */
 199
 200         RxConfig        = 0x44,
 201 #define RX128_INT_EN                    (1 << 15)       /* 8111c and later */
 202 #define RX_MULTI_EN                     (1 << 14)       /* 8111c only */
 203 #define RXCFG_FIFO_SHIFT                13
 204                                         /* No threshold before first PCI xfer */
 205 #define RX_FIFO_THRESH                  (7 << RXCFG_FIFO_SHIFT)
 206 #define RX_EARLY_OFF                    (1 << 11)
 207 #define RXCFG_DMA_SHIFT                 8
 208                                         /* Unlimited maximum PCI burst. */
 209 #define RX_DMA_BURST                    (7 << RXCFG_DMA_SHIFT)
 210
 211         Cfg9346         = 0x50,
 212         Config0         = 0x51,
 213         Config1         = 0x52,
 214         Config2         = 0x53,
 215 #define PME_SIGNAL                      (1 << 5)        /* 8168c and later */
 216
 217         Config3         = 0x54,
 218         Config4         = 0x55,
 219         Config5         = 0x56,
 220         PHYAR           = 0x60,
 221         PHYstatus       = 0x6c,
 222         RxMaxSize       = 0xda,
 223         CPlusCmd        = 0xe0,
 224         IntrMitigate    = 0xe2,
 225
 226 #define RTL_COALESCE_TX_USECS   GENMASK(15, 12)
 227 #define RTL_COALESCE_TX_FRAMES  GENMASK(11, 8)
 228 #define RTL_COALESCE_RX_USECS   GENMASK(7, 4)
 229 #define RTL_COALESCE_RX_FRAMES  GENMASK(3, 0)
 230
 231 #define RTL_COALESCE_T_MAX      0x0fU
 232 #define RTL_COALESCE_FRAME_MAX  (RTL_COALESCE_T_MAX * 4)
 233
 234         RxDescAddrLow   = 0xe4,
 235         RxDescAddrHigh  = 0xe8,
 236         EarlyTxThres    = 0xec, /* 8169. Unit of 32 bytes. */
 237
 238 #define NoEarlyTx       0x3f    /* Max value : no early transmit. */
 239
 240         MaxTxPacketSize = 0xec, /* 8101/8168. Unit of 128 bytes. */
 241
 242 #define TxPacketMax     (8064 >> 7)
 243 #define EarlySize       0x27
 244
 245         FuncEvent       = 0xf0,
 246         FuncEventMask   = 0xf4,
 247         FuncPresetState = 0xf8,
 248         IBCR0           = 0xf8,
 249         IBCR2           = 0xf9,
 250         IBIMR0          = 0xfa,
 251         IBISR0          = 0xfb,
 252         FuncForceEvent  = 0xfc,
 253 };
 254
 255 enum rtl8168_8101_registers {
 256         CSIDR                   = 0x64,
 257         CSIAR                   = 0x68,
 258 #define CSIAR_FLAG                      0x80000000
 259 #define CSIAR_WRITE_CMD                 0x80000000
 260 #define CSIAR_BYTE_ENABLE               0x0000f000
 261 #define CSIAR_ADDR_MASK                 0x00000fff
 262         PMCH                    = 0x6f,
 263 #define D3COLD_NO_PLL_DOWN              BIT(7)
 264 #define D3HOT_NO_PLL_DOWN               BIT(6)
 265 #define D3_NO_PLL_DOWN                  (BIT(7) | BIT(6))
 266         EPHYAR                  = 0x80,
 267 #define EPHYAR_FLAG                     0x80000000
 268 #define EPHYAR_WRITE_CMD                0x80000000
 269 #define EPHYAR_REG_MASK                 0x1f
 270 #define EPHYAR_REG_SHIFT                16
 271 #define EPHYAR_DATA_MASK                0xffff
 272         DLLPR                   = 0xd0,
 273 #define PFM_EN                          (1 << 6)
 274 #define TX_10M_PS_EN                    (1 << 7)
 275         DBG_REG                 = 0xd1,
 276 #define FIX_NAK_1                       (1 << 4)
 277 #define FIX_NAK_2                       (1 << 3)
 278         TWSI                    = 0xd2,
 279         MCU                     = 0xd3,
 280 #define NOW_IS_OOB                      (1 << 7)
 281 #define TX_EMPTY                        (1 << 5)
 282 #define RX_EMPTY                        (1 << 4)
 283 #define RXTX_EMPTY                      (TX_EMPTY | RX_EMPTY)
 284 #define EN_NDP                          (1 << 3)
 285 #define EN_OOB_RESET                    (1 << 2)
 286 #define LINK_LIST_RDY                   (1 << 1)
 287         EFUSEAR                 = 0xdc,
 288 #define EFUSEAR_FLAG                    0x80000000
 289 #define EFUSEAR_WRITE_CMD               0x80000000
 290 #define EFUSEAR_READ_CMD                0x00000000
 291 #define EFUSEAR_REG_MASK                0x03ff
 292 #define EFUSEAR_REG_SHIFT               8
 293 #define EFUSEAR_DATA_MASK               0xff
 294         MISC_1                  = 0xf2,
 295 #define PFM_D3COLD_EN                   (1 << 6)
 296 };
 297
 298 enum rtl8168_registers {
 299         LED_FREQ                = 0x1a,
 300         EEE_LED                 = 0x1b,
 301         ERIDR                   = 0x70,
 302         ERIAR                   = 0x74,
 303 #define ERIAR_FLAG                      0x80000000
 304 #define ERIAR_WRITE_CMD                 0x80000000
 305 #define ERIAR_READ_CMD                  0x00000000
 306 #define ERIAR_ADDR_BYTE_ALIGN           4
 307 #define ERIAR_TYPE_SHIFT                16
 308 #define ERIAR_EXGMAC                    (0x00 << ERIAR_TYPE_SHIFT)
 309 #define ERIAR_MSIX                      (0x01 << ERIAR_TYPE_SHIFT)
 310 #define ERIAR_ASF                       (0x02 << ERIAR_TYPE_SHIFT)
 311 #define ERIAR_OOB                       (0x02 << ERIAR_TYPE_SHIFT)
 312 #define ERIAR_MASK_SHIFT                12
 313 #define ERIAR_MASK_0001                 (0x1 << ERIAR_MASK_SHIFT)
 314 #define ERIAR_MASK_0011                 (0x3 << ERIAR_MASK_SHIFT)
 315 #define ERIAR_MASK_0100                 (0x4 << ERIAR_MASK_SHIFT)
 316 #define ERIAR_MASK_0101                 (0x5 << ERIAR_MASK_SHIFT)
 317 #define ERIAR_MASK_1111                 (0xf << ERIAR_MASK_SHIFT)
 318         EPHY_RXER_NUM           = 0x7c,
 319         OCPDR                   = 0xb0, /* OCP GPHY access */
 320 #define OCPDR_WRITE_CMD                 0x80000000
 321 #define OCPDR_READ_CMD                  0x00000000
 322 #define OCPDR_REG_MASK                  0x7f
 323 #define OCPDR_GPHY_REG_SHIFT            16
 324 #define OCPDR_DATA_MASK                 0xffff
 325         OCPAR                   = 0xb4,
 326 #define OCPAR_FLAG                      0x80000000
 327 #define OCPAR_GPHY_WRITE_CMD            0x8000f060
 328 #define OCPAR_GPHY_READ_CMD             0x0000f060
 329         GPHY_OCP                = 0xb8,
 330         RDSAR1                  = 0xd0, /* 8168c only. Undocumented on 8168dp */
 331         MISC                    = 0xf0, /* 8168e only. */
 332 #define TXPLA_RST                       (1 << 29)
 333 #define DISABLE_LAN_EN                  (1 << 23) /* Enable GPIO pin */
 334 #define PWM_EN                          (1 << 22)
 335 #define RXDV_GATED_EN                   (1 << 19)
 336 #define EARLY_TALLY_EN                  (1 << 16)
 337 };
 338
 339 enum rtl8125_registers {
 340         IntrMask_8125           = 0x38,
 341         IntrStatus_8125         = 0x3c,
 342         TxPoll_8125             = 0x90,
 343         MAC0_BKP                = 0x19e0,
 344         EEE_TXIDLE_TIMER_8125   = 0x6048,
 345 };
 346
 347 #define RX_VLAN_INNER_8125      BIT(22)
 348 #define RX_VLAN_OUTER_8125      BIT(23)
 349 #define RX_VLAN_8125            (RX_VLAN_INNER_8125 | RX_VLAN_OUTER_8125)
 350
 351 #define RX_FETCH_DFLT_8125      (8 << 27)
 352
 353 enum rtl_register_content {
 354         /* InterruptStatusBits */
 355         SYSErr          = 0x8000,
 356         PCSTimeout      = 0x4000,
 357         SWInt           = 0x0100,
 358         TxDescUnavail   = 0x0080,
 359         RxFIFOOver      = 0x0040,
 360         LinkChg         = 0x0020,
 361         RxOverflow      = 0x0010,
 362         TxErr           = 0x0008,
 363         TxOK            = 0x0004,
 364         RxErr           = 0x0002,
 365         RxOK            = 0x0001,
 366
 367         /* RxStatusDesc */
 368         RxRWT   = (1 << 22),
 369         RxRES   = (1 << 21),
 370         RxRUNT  = (1 << 20),
 371         RxCRC   = (1 << 19),
 372
 373         /* ChipCmdBits */
 374         StopReq         = 0x80,
 375         CmdReset        = 0x10,
 376         CmdRxEnb        = 0x08,
 377         CmdTxEnb        = 0x04,
 378         RxBufEmpty      = 0x01,
 379
 380         /* TXPoll register p.5 */
 381         HPQ             = 0x80,         /* Poll cmd on the high prio queue */
 382         NPQ             = 0x40,         /* Poll cmd on the low prio queue */
 383         FSWInt          = 0x01,         /* Forced software interrupt */
 384
 385         /* Cfg9346Bits */
 386         Cfg9346_Lock    = 0x00,
 387         Cfg9346_Unlock  = 0xc0,
 388
 389         /* rx_mode_bits */
 390         AcceptErr       = 0x20,
 391         AcceptRunt      = 0x10,
 392 #define RX_CONFIG_ACCEPT_ERR_MASK       0x30
 393         AcceptBroadcast = 0x08,
 394         AcceptMulticast = 0x04,
 395         AcceptMyPhys    = 0x02,
 396         AcceptAllPhys   = 0x01,
 397 #define RX_CONFIG_ACCEPT_OK_MASK        0x0f
 398 #define RX_CONFIG_ACCEPT_MASK           0x3f
 399
 400         /* TxConfigBits */
 401         TxInterFrameGapShift = 24,
 402         TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
 403
 404         /* Config1 register p.24 */
 405         LEDS1           = (1 << 7),
 406         LEDS0           = (1 << 6),
 407         Speed_down      = (1 << 4),
 408         MEMMAP          = (1 << 3),
 409         IOMAP           = (1 << 2),
 410         VPD             = (1 << 1),
 411         PMEnable        = (1 << 0),     /* Power Management Enable */
 412
 413         /* Config2 register p. 25 */
 414         ClkReqEn        = (1 << 7),     /* Clock Request Enable */
 415         MSIEnable       = (1 << 5),     /* 8169 only. Reserved in the 8168. */
 416         PCI_Clock_66MHz = 0x01,
 417         PCI_Clock_33MHz = 0x00,
 418
 419         /* Config3 register p.25 */
 420         MagicPacket     = (1 << 5),     /* Wake up when receives a Magic Packet */
 421         LinkUp          = (1 << 4),     /* Wake up when the cable connection is re-established */
 422         Jumbo_En0       = (1 << 2),     /* 8168 only. Reserved in the 8168b */
 423         Rdy_to_L23      = (1 << 1),     /* L23 Enable */
 424         Beacon_en       = (1 << 0),     /* 8168 only. Reserved in the 8168b */
 425
 426         /* Config4 register */
 427         Jumbo_En1       = (1 << 1),     /* 8168 only. Reserved in the 8168b */
 428
 429         /* Config5 register p.27 */
 430         BWF             = (1 << 6),     /* Accept Broadcast wakeup frame */
 431         MWF             = (1 << 5),     /* Accept Multicast wakeup frame */
 432         UWF             = (1 << 4),     /* Accept Unicast wakeup frame */
 433         Spi_en          = (1 << 3),
 434         LanWake         = (1 << 1),     /* LanWake enable/disable */
 435         PMEStatus       = (1 << 0),     /* PME status can be reset by PCI RST# */
 436         ASPM_en         = (1 << 0),     /* ASPM enable */
 437
 438         /* CPlusCmd p.31 */
 439         EnableBist      = (1 << 15),    // 8168 8101
 440         Mac_dbgo_oe     = (1 << 14),    // 8168 8101
 441         EnAnaPLL        = (1 << 14),    // 8169
 442         Normal_mode     = (1 << 13),    // unused
 443         Force_half_dup  = (1 << 12),    // 8168 8101
 444         Force_rxflow_en = (1 << 11),    // 8168 8101
 445         Force_txflow_en = (1 << 10),    // 8168 8101
 446         Cxpl_dbg_sel    = (1 << 9),     // 8168 8101
 447         ASF             = (1 << 8),     // 8168 8101
 448         PktCntrDisable  = (1 << 7),     // 8168 8101
 449         Mac_dbgo_sel    = 0x001c,       // 8168
 450         RxVlan          = (1 << 6),
 451         RxChkSum        = (1 << 5),
 452         PCIDAC          = (1 << 4),
 453         PCIMulRW        = (1 << 3),
 454 #define INTT_MASK       GENMASK(1, 0)
 455 #define CPCMD_MASK      (Normal_mode | RxVlan | RxChkSum | INTT_MASK)
 456
 457         /* rtl8169_PHYstatus */
 458         TBI_Enable      = 0x80,
 459         TxFlowCtrl      = 0x40,
 460         RxFlowCtrl      = 0x20,
 461         _1000bpsF       = 0x10,
 462         _100bps         = 0x08,
 463         _10bps          = 0x04,
 464         LinkStatus      = 0x02,
 465         FullDup         = 0x01,
 466
 467         /* ResetCounterCommand */
 468         CounterReset    = 0x1,
 469
 470         /* DumpCounterCommand */
 471         CounterDump     = 0x8,
 472
 473         /* magic enable v2 */
 474         MagicPacket_v2  = (1 << 16),    /* Wake up when receives a Magic Packet */
 475 };
 476
 477 enum rtl_desc_bit {
 478         /* First doubleword. */
 479         DescOwn         = (1 << 31), /* Descriptor is owned by NIC */
 480         RingEnd         = (1 << 30), /* End of descriptor ring */
 481         FirstFrag       = (1 << 29), /* First segment of a packet */
 482         LastFrag        = (1 << 28), /* Final segment of a packet */
 483 };
 484
 485 /* Generic case. */
 486 enum rtl_tx_desc_bit {
 487         /* First doubleword. */
 488         TD_LSO          = (1 << 27),            /* Large Send Offload */
 489 #define TD_MSS_MAX                      0x07ffu /* MSS value */
 490
 491         /* Second doubleword. */
 492         TxVlanTag       = (1 << 17),            /* Add VLAN tag */
 493 };
 494
 495 /* 8169, 8168b and 810x except 8102e. */
 496 enum rtl_tx_desc_bit_0 {
 497         /* First doubleword. */
 498 #define TD0_MSS_SHIFT                   16      /* MSS position (11 bits) */
 499         TD0_TCP_CS      = (1 << 16),            /* Calculate TCP/IP checksum */
 500         TD0_UDP_CS      = (1 << 17),            /* Calculate UDP/IP checksum */
 501         TD0_IP_CS       = (1 << 18),            /* Calculate IP checksum */
 502 };
 503
 504 /* 8102e, 8168c and beyond. */
 505 enum rtl_tx_desc_bit_1 {
 506         /* First doubleword. */
 507         TD1_GTSENV4     = (1 << 26),            /* Giant Send for IPv4 */
 508         TD1_GTSENV6     = (1 << 25),            /* Giant Send for IPv6 */
 509 #define GTTCPHO_SHIFT                   18
 510 #define GTTCPHO_MAX                     0x7f
 511
 512         /* Second doubleword. */
 513 #define TCPHO_SHIFT                     18
 514 #define TCPHO_MAX                       0x3ff
 515 #define TD1_MSS_SHIFT                   18      /* MSS position (11 bits) */
 516         TD1_IPv6_CS     = (1 << 28),            /* Calculate IPv6 checksum */
 517         TD1_IPv4_CS     = (1 << 29),            /* Calculate IPv4 checksum */
 518         TD1_TCP_CS      = (1 << 30),            /* Calculate TCP/IP checksum */
 519         TD1_UDP_CS      = (1 << 31),            /* Calculate UDP/IP checksum */
 520 };
 521
 522 enum rtl_rx_desc_bit {
 523         /* Rx private */
 524         PID1            = (1 << 18), /* Protocol ID bit 1/2 */
 525         PID0            = (1 << 17), /* Protocol ID bit 0/2 */
 526
 527 #define RxProtoUDP      (PID1)
 528 #define RxProtoTCP      (PID0)
 529 #define RxProtoIP       (PID1 | PID0)
 530 #define RxProtoMask     RxProtoIP
 531
 532         IPFail          = (1 << 16), /* IP checksum failed */
 533         UDPFail         = (1 << 15), /* UDP/IP checksum failed */
 534         TCPFail         = (1 << 14), /* TCP/IP checksum failed */
 535
 536 #define RxCSFailMask    (IPFail | UDPFail | TCPFail)
 537
 538         RxVlanTag       = (1 << 16), /* VLAN tag available */
 539 };
 540
 541 #define RTL_GSO_MAX_SIZE_V1     32000
 542 #define RTL_GSO_MAX_SEGS_V1     24
 543 #define RTL_GSO_MAX_SIZE_V2     64000
 544 #define RTL_GSO_MAX_SEGS_V2     64
 545
 546 struct TxDesc {
 547         __le32 opts1;
 548         __le32 opts2;
 549         __le64 addr;
 550 };
 551
 552 struct RxDesc {
 553         __le32 opts1;
 554         __le32 opts2;
 555         __le64 addr;
 556 };
 557
 558 struct ring_info {
 559         struct sk_buff  *skb;
 560         u32             len;
 561 };
 562
 563 struct rtl8169_counters {
 564         __le64  tx_packets;
 565         __le64  rx_packets;
 566         __le64  tx_errors;
 567         __le32  rx_errors;
 568         __le16  rx_missed;
 569         __le16  align_errors;
 570         __le32  tx_one_collision;
 571         __le32  tx_multi_collision;
 572         __le64  rx_unicast;
 573         __le64  rx_broadcast;
 574         __le32  rx_multicast;
 575         __le16  tx_aborted;
 576         __le16  tx_underun;
 577 };
 578
 579 struct rtl8169_tc_offsets {
 580         bool    inited;
 581         __le64  tx_errors;
 582         __le32  tx_multi_collision;
 583         __le16  tx_aborted;
 584         __le16  rx_missed;
 585 };
 586
 587 enum rtl_flag {
 588         RTL_FLAG_TASK_ENABLED = 0,
 589         RTL_FLAG_TASK_RESET_PENDING,
 590         RTL_FLAG_MAX
 591 };
 592
 593 enum rtl_dash_type {
 594         RTL_DASH_NONE,
 595         RTL_DASH_DP,
 596         RTL_DASH_EP,
 597 };
 598
 599 struct rtl8169_private {
 600         void __iomem *mmio_addr;        /* memory map physical address */
 601         struct pci_dev *pci_dev;
 602         struct net_device *dev;
 603         struct phy_device *phydev;
 604         struct napi_struct napi;
 605         enum mac_version mac_version;
 606         enum rtl_dash_type dash_type;
 607         u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
 608         u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
 609         u32 dirty_tx;
 610         struct TxDesc *TxDescArray;     /* 256-aligned Tx descriptor ring */
 611         struct RxDesc *RxDescArray;     /* 256-aligned Rx descriptor ring */
 612         dma_addr_t TxPhyAddr;
 613         dma_addr_t RxPhyAddr;
 614         struct page *Rx_databuff[NUM_RX_DESC];  /* Rx data buffers */
 615         struct ring_info tx_skb[NUM_TX_DESC];   /* Tx data buffers */
 616         u16 cp_cmd;
 617         u32 irq_mask;
 618         struct clk *clk;
 619
 620         struct {
 621                 DECLARE_BITMAP(flags, RTL_FLAG_MAX);
 622                 struct work_struct work;
 623         } wk;
 624
 625         unsigned supports_gmii:1;
 626         unsigned aspm_manageable:1;
 627         dma_addr_t counters_phys_addr;
 628         struct rtl8169_counters *counters;
 629         struct rtl8169_tc_offsets tc_offset;
 630         u32 saved_wolopts;
 631         int eee_adv;
 632
 633         const char *fw_name;
 634         struct rtl_fw *rtl_fw;
 635
 636         u32 ocp_base;
 637 };
 638
 639 typedef void (*rtl_generic_fct)(struct rtl8169_private *tp);
 640
 641 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
 642 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
 643 MODULE_SOFTDEP("pre: realtek");
 644 MODULE_LICENSE("GPL");
 645 MODULE_FIRMWARE(FIRMWARE_8168D_1);
 646 MODULE_FIRMWARE(FIRMWARE_8168D_2);
 647 MODULE_FIRMWARE(FIRMWARE_8168E_1);
 648 MODULE_FIRMWARE(FIRMWARE_8168E_2);
 649 MODULE_FIRMWARE(FIRMWARE_8168E_3);
 650 MODULE_FIRMWARE(FIRMWARE_8105E_1);
 651 MODULE_FIRMWARE(FIRMWARE_8168F_1);
 652 MODULE_FIRMWARE(FIRMWARE_8168F_2);
 653 MODULE_FIRMWARE(FIRMWARE_8402_1);
 654 MODULE_FIRMWARE(FIRMWARE_8411_1);
 655 MODULE_FIRMWARE(FIRMWARE_8411_2);
 656 MODULE_FIRMWARE(FIRMWARE_8106E_1);
 657 MODULE_FIRMWARE(FIRMWARE_8106E_2);
 658 MODULE_FIRMWARE(FIRMWARE_8168G_2);
 659 MODULE_FIRMWARE(FIRMWARE_8168G_3);
 660 MODULE_FIRMWARE(FIRMWARE_8168H_1);
 661 MODULE_FIRMWARE(FIRMWARE_8168H_2);
 662 MODULE_FIRMWARE(FIRMWARE_8168FP_3);
 663 MODULE_FIRMWARE(FIRMWARE_8107E_1);
 664 MODULE_FIRMWARE(FIRMWARE_8107E_2);
 665 MODULE_FIRMWARE(FIRMWARE_8125A_3);
 666 MODULE_FIRMWARE(FIRMWARE_8125B_2);
 667
 668 static inline struct device *tp_to_dev(struct rtl8169_private *tp)
 669 {
 670         return &tp->pci_dev->dev;
 671 }
 672
 673 static void rtl_lock_config_regs(struct rtl8169_private *tp)
 674 {
 675         RTL_W8(tp, Cfg9346, Cfg9346_Lock);
 676 }
 677
 678 static void rtl_unlock_config_regs(struct rtl8169_private *tp)
 679 {
 680         RTL_W8(tp, Cfg9346, Cfg9346_Unlock);
 681 }
 682
 683 static void rtl_pci_commit(struct rtl8169_private *tp)
 684 {
 685         /* Read an arbitrary register to commit a preceding PCI write */
 686         RTL_R8(tp, ChipCmd);
 687 }
 688
 689 static bool rtl_is_8125(struct rtl8169_private *tp)
 690 {
 691         return tp->mac_version >= RTL_GIGA_MAC_VER_60;
 692 }
 693
 694 static bool rtl_is_8168evl_up(struct rtl8169_private *tp)
 695 {
 696         return tp->mac_version >= RTL_GIGA_MAC_VER_34 &&
 697                tp->mac_version != RTL_GIGA_MAC_VER_39 &&
 698                tp->mac_version <= RTL_GIGA_MAC_VER_53;
 699 }
 700
 701 static bool rtl_supports_eee(struct rtl8169_private *tp)
 702 {
 703         return tp->mac_version >= RTL_GIGA_MAC_VER_34 &&
 704                tp->mac_version != RTL_GIGA_MAC_VER_37 &&
 705                tp->mac_version != RTL_GIGA_MAC_VER_39;
 706 }
 707
 708 static void rtl_read_mac_from_reg(struct rtl8169_private *tp, u8 *mac, int reg)
 709 {
 710         int i;
 711
 712         for (i = 0; i < ETH_ALEN; i++)
 713                 mac[i] = RTL_R8(tp, reg + i);
 714 }
 715
 716 struct rtl_cond {
 717         bool (*check)(struct rtl8169_private *);
 718         const char *msg;
 719 };
 720
 721 static bool rtl_loop_wait(struct rtl8169_private *tp, const struct rtl_cond *c,
 722                           unsigned long usecs, int n, bool high)
 723 {
 724         int i;
 725
 726         for (i = 0; i < n; i++) {
 727                 if (c->check(tp) == high)
 728                         return true;
 729                 fsleep(usecs);
 730         }
 731
 732         if (net_ratelimit())
 733                 netdev_err(tp->dev, "%s == %d (loop: %d, delay: %lu).\n",
 734                            c->msg, !high, n, usecs);
 735         return false;
 736 }
 737
 738 static bool rtl_loop_wait_high(struct rtl8169_private *tp,
 739                                const struct rtl_cond *c,
 740                                unsigned long d, int n)
 741 {
 742         return rtl_loop_wait(tp, c, d, n, true);
 743 }
 744
 745 static bool rtl_loop_wait_low(struct rtl8169_private *tp,
 746                               const struct rtl_cond *c,
 747                               unsigned long d, int n)
 748 {
 749         return rtl_loop_wait(tp, c, d, n, false);
 750 }
 751
 752 #define DECLARE_RTL_COND(name)                          \
 753 static bool name ## _check(struct rtl8169_private *);   \
 754                                                         \
 755 static const struct rtl_cond name = {                   \
 756         .check  = name ## _check,                       \
 757         .msg    = #name                                 \
 758 };                                                      \
 759                                                         \
 760 static bool name ## _check(struct rtl8169_private *tp)
 761
 762 static void r8168fp_adjust_ocp_cmd(struct rtl8169_private *tp, u32 *cmd, int type)
 763 {
 764         /* based on RTL8168FP_OOBMAC_BASE in vendor driver */
 765         if (type == ERIAR_OOB &&
 766             (tp->mac_version == RTL_GIGA_MAC_VER_52 ||
 767              tp->mac_version == RTL_GIGA_MAC_VER_53))
 768                 *cmd |= 0xf70 << 18;
 769 }
 770
 771 DECLARE_RTL_COND(rtl_eriar_cond)
 772 {
 773         return RTL_R32(tp, ERIAR) & ERIAR_FLAG;
 774 }
 775
 776 static void _rtl_eri_write(struct rtl8169_private *tp, int addr, u32 mask,
 777                            u32 val, int type)
 778 {
 779         u32 cmd = ERIAR_WRITE_CMD | type | mask | addr;
 780
 781         if (WARN(addr & 3 || !mask, "addr: 0x%x, mask: 0x%08x\n", addr, mask))
 782                 return;
 783
 784         RTL_W32(tp, ERIDR, val);
 785         r8168fp_adjust_ocp_cmd(tp, &cmd, type);
 786         RTL_W32(tp, ERIAR, cmd);
 787
 788         rtl_loop_wait_low(tp, &rtl_eriar_cond, 100, 100);
 789 }
 790
 791 static void rtl_eri_write(struct rtl8169_private *tp, int addr, u32 mask,
 792                           u32 val)
 793 {
 794         _rtl_eri_write(tp, addr, mask, val, ERIAR_EXGMAC);
 795 }
 796
 797 static u32 _rtl_eri_read(struct rtl8169_private *tp, int addr, int type)
 798 {
 799         u32 cmd = ERIAR_READ_CMD | type | ERIAR_MASK_1111 | addr;
 800
 801         r8168fp_adjust_ocp_cmd(tp, &cmd, type);
 802         RTL_W32(tp, ERIAR, cmd);
 803
 804         return rtl_loop_wait_high(tp, &rtl_eriar_cond, 100, 100) ?
 805                 RTL_R32(tp, ERIDR) : ~0;
 806 }
 807
 808 static u32 rtl_eri_read(struct rtl8169_private *tp, int addr)
 809 {
 810         return _rtl_eri_read(tp, addr, ERIAR_EXGMAC);
 811 }
 812
 813 static void rtl_w0w1_eri(struct rtl8169_private *tp, int addr, u32 p, u32 m)
 814 {
 815         u32 val = rtl_eri_read(tp, addr);
 816
 817         rtl_eri_write(tp, addr, ERIAR_MASK_1111, (val & ~m) | p);
 818 }
 819
 820 static void rtl_eri_set_bits(struct rtl8169_private *tp, int addr, u32 p)
 821 {
 822         rtl_w0w1_eri(tp, addr, p, 0);
 823 }
 824
 825 static void rtl_eri_clear_bits(struct rtl8169_private *tp, int addr, u32 m)
 826 {
 827         rtl_w0w1_eri(tp, addr, 0, m);
 828 }
 829
 830 static bool rtl_ocp_reg_failure(u32 reg)
 831 {
 832         return WARN_ONCE(reg & 0xffff0001, "Invalid ocp reg %x!\n", reg);
 833 }
 834
 835 DECLARE_RTL_COND(rtl_ocp_gphy_cond)
 836 {
 837         return RTL_R32(tp, GPHY_OCP) & OCPAR_FLAG;
 838 }
 839
 840 static void r8168_phy_ocp_write(struct rtl8169_private *tp, u32 reg, u32 data)
 841 {
 842         if (rtl_ocp_reg_failure(reg))
 843                 return;
 844
 845         RTL_W32(tp, GPHY_OCP, OCPAR_FLAG | (reg << 15) | data);
 846
 847         rtl_loop_wait_low(tp, &rtl_ocp_gphy_cond, 25, 10);
 848 }
 849
 850 static int r8168_phy_ocp_read(struct rtl8169_private *tp, u32 reg)
 851 {
 852         if (rtl_ocp_reg_failure(reg))
 853                 return 0;
 854
 855         RTL_W32(tp, GPHY_OCP, reg << 15);
 856
 857         return rtl_loop_wait_high(tp, &rtl_ocp_gphy_cond, 25, 10) ?
 858                 (RTL_R32(tp, GPHY_OCP) & 0xffff) : -ETIMEDOUT;
 859 }
 860
 861 static void r8168_mac_ocp_write(struct rtl8169_private *tp, u32 reg, u32 data)
 862 {
 863         if (rtl_ocp_reg_failure(reg))
 864                 return;
 865
 866         RTL_W32(tp, OCPDR, OCPAR_FLAG | (reg << 15) | data);
 867 }
 868
 869 static u16 r8168_mac_ocp_read(struct rtl8169_private *tp, u32 reg)
 870 {
 871         if (rtl_ocp_reg_failure(reg))
 872                 return 0;
 873
 874         RTL_W32(tp, OCPDR, reg << 15);
 875
 876         return RTL_R32(tp, OCPDR);
 877 }
 878
 879 static void r8168_mac_ocp_modify(struct rtl8169_private *tp, u32 reg, u16 mask,
 880                                  u16 set)
 881 {
 882         u16 data = r8168_mac_ocp_read(tp, reg);
 883
 884         r8168_mac_ocp_write(tp, reg, (data & ~mask) | set);
 885 }
 886
 887 /* Work around a hw issue with RTL8168g PHY, the quirk disables
 888  * PHY MCU interrupts before PHY power-down.
 889  */
 890 static void rtl8168g_phy_suspend_quirk(struct rtl8169_private *tp, int value)
 891 {
 892         switch (tp->mac_version) {
 893         case RTL_GIGA_MAC_VER_40:
 894         case RTL_GIGA_MAC_VER_41:
 895         case RTL_GIGA_MAC_VER_49:
 896                 if (value & BMCR_RESET || !(value & BMCR_PDOWN))
 897                         rtl_eri_set_bits(tp, 0x1a8, 0xfc000000);
 898                 else
 899                         rtl_eri_clear_bits(tp, 0x1a8, 0xfc000000);
 900                 break;
 901         default:
 902                 break;
 903         }
 904 };
 905
 906 static void r8168g_mdio_write(struct rtl8169_private *tp, int reg, int value)
 907 {
 908         if (reg == 0x1f) {
 909                 tp->ocp_base = value ? value << 4 : OCP_STD_PHY_BASE;
 910                 return;
 911         }
 912
 913         if (tp->ocp_base != OCP_STD_PHY_BASE)
 914                 reg -= 0x10;
 915
 916         if (tp->ocp_base == OCP_STD_PHY_BASE && reg == MII_BMCR)
 917                 rtl8168g_phy_suspend_quirk(tp, value);
 918
 919         r8168_phy_ocp_write(tp, tp->ocp_base + reg * 2, value);
 920 }
 921
 922 static int r8168g_mdio_read(struct rtl8169_private *tp, int reg)
 923 {
 924         if (reg == 0x1f)
 925                 return tp->ocp_base == OCP_STD_PHY_BASE ? 0 : tp->ocp_base >> 4;
 926
 927         if (tp->ocp_base != OCP_STD_PHY_BASE)
 928                 reg -= 0x10;
 929
 930         return r8168_phy_ocp_read(tp, tp->ocp_base + reg * 2);
 931 }
 932
 933 static void mac_mcu_write(struct rtl8169_private *tp, int reg, int value)
 934 {
 935         if (reg == 0x1f) {
 936                 tp->ocp_base = value << 4;
 937                 return;
 938         }
 939
 940         r8168_mac_ocp_write(tp, tp->ocp_base + reg, value);
 941 }
 942
 943 static int mac_mcu_read(struct rtl8169_private *tp, int reg)
 944 {
 945         return r8168_mac_ocp_read(tp, tp->ocp_base + reg);
 946 }
 947
 948 DECLARE_RTL_COND(rtl_phyar_cond)
 949 {
 950         return RTL_R32(tp, PHYAR) & 0x80000000;
 951 }
 952
 953 static void r8169_mdio_write(struct rtl8169_private *tp, int reg, int value)
 954 {
 955         RTL_W32(tp, PHYAR, 0x80000000 | (reg & 0x1f) << 16 | (value & 0xffff));
 956
 957         rtl_loop_wait_low(tp, &rtl_phyar_cond, 25, 20);
 958         /*
 959          * According to hardware specs a 20us delay is required after write
 960          * complete indication, but before sending next command.
 961          */
 962         udelay(20);
 963 }
 964
 965 static int r8169_mdio_read(struct rtl8169_private *tp, int reg)
 966 {
 967         int value;
 968
 969         RTL_W32(tp, PHYAR, 0x0 | (reg & 0x1f) << 16);
 970
 971         value = rtl_loop_wait_high(tp, &rtl_phyar_cond, 25, 20) ?
 972                 RTL_R32(tp, PHYAR) & 0xffff : -ETIMEDOUT;
 973
 974         /*
 975          * According to hardware specs a 20us delay is required after read
 976          * complete indication, but before sending next command.
 977          */
 978         udelay(20);
 979
 980         return value;
 981 }
 982
 983 DECLARE_RTL_COND(rtl_ocpar_cond)
 984 {
 985         return RTL_R32(tp, OCPAR) & OCPAR_FLAG;
 986 }
 987
 988 static void r8168dp_1_mdio_access(struct rtl8169_private *tp, int reg, u32 data)
 989 {
 990         RTL_W32(tp, OCPDR, data | ((reg & OCPDR_REG_MASK) << OCPDR_GPHY_REG_SHIFT));
 991         RTL_W32(tp, OCPAR, OCPAR_GPHY_WRITE_CMD);
 992         RTL_W32(tp, EPHY_RXER_NUM, 0);
 993
 994         rtl_loop_wait_low(tp, &rtl_ocpar_cond, 1000, 100);
 995 }
 996
 997 static void r8168dp_1_mdio_write(struct rtl8169_private *tp, int reg, int value)
 998 {
 999         r8168dp_1_mdio_access(tp, reg,
1000                               OCPDR_WRITE_CMD | (value & OCPDR_DATA_MASK));
1001 }
1002
1003 static int r8168dp_1_mdio_read(struct rtl8169_private *tp, int reg)
1004 {
1005         r8168dp_1_mdio_access(tp, reg, OCPDR_READ_CMD);
1006
1007         mdelay(1);
1008         RTL_W32(tp, OCPAR, OCPAR_GPHY_READ_CMD);
1009         RTL_W32(tp, EPHY_RXER_NUM, 0);
1010
1011         return rtl_loop_wait_high(tp, &rtl_ocpar_cond, 1000, 100) ?
1012                 RTL_R32(tp, OCPDR) & OCPDR_DATA_MASK : -ETIMEDOUT;
1013 }
1014
1015 #define R8168DP_1_MDIO_ACCESS_BIT       0x00020000
1016
1017 static void r8168dp_2_mdio_start(struct rtl8169_private *tp)
1018 {
1019         RTL_W32(tp, 0xd0, RTL_R32(tp, 0xd0) & ~R8168DP_1_MDIO_ACCESS_BIT);
1020 }
1021
1022 static void r8168dp_2_mdio_stop(struct rtl8169_private *tp)
1023 {
1024         RTL_W32(tp, 0xd0, RTL_R32(tp, 0xd0) | R8168DP_1_MDIO_ACCESS_BIT);
1025 }
1026
1027 static void r8168dp_2_mdio_write(struct rtl8169_private *tp, int reg, int value)
1028 {
1029         r8168dp_2_mdio_start(tp);
1030
1031         r8169_mdio_write(tp, reg, value);
1032
1033         r8168dp_2_mdio_stop(tp);
1034 }
1035
1036 static int r8168dp_2_mdio_read(struct rtl8169_private *tp, int reg)
1037 {
1038         int value;
1039
1040         /* Work around issue with chip reporting wrong PHY ID */
1041         if (reg == MII_PHYSID2)
1042                 return 0xc912;
1043
1044         r8168dp_2_mdio_start(tp);
1045
1046         value = r8169_mdio_read(tp, reg);
1047
1048         r8168dp_2_mdio_stop(tp);
1049
1050         return value;
1051 }
1052
1053 static void rtl_writephy(struct rtl8169_private *tp, int location, int val)
1054 {
1055         switch (tp->mac_version) {
1056         case RTL_GIGA_MAC_VER_27:
1057                 r8168dp_1_mdio_write(tp, location, val);
1058                 break;
1059         case RTL_GIGA_MAC_VER_28:
1060         case RTL_GIGA_MAC_VER_31:
1061                 r8168dp_2_mdio_write(tp, location, val);
1062                 break;
1063         case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_63:
1064                 r8168g_mdio_write(tp, location, val);
1065                 break;
1066         default:
1067                 r8169_mdio_write(tp, location, val);
1068                 break;
1069         }
1070 }
1071
1072 static int rtl_readphy(struct rtl8169_private *tp, int location)
1073 {
1074         switch (tp->mac_version) {
1075         case RTL_GIGA_MAC_VER_27:
1076                 return r8168dp_1_mdio_read(tp, location);
1077         case RTL_GIGA_MAC_VER_28:
1078         case RTL_GIGA_MAC_VER_31:
1079                 return r8168dp_2_mdio_read(tp, location);
1080         case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_63:
1081                 return r8168g_mdio_read(tp, location);
1082         default:
1083                 return r8169_mdio_read(tp, location);
1084         }
1085 }
1086
1087 DECLARE_RTL_COND(rtl_ephyar_cond)
1088 {
1089         return RTL_R32(tp, EPHYAR) & EPHYAR_FLAG;
1090 }
1091
1092 static void rtl_ephy_write(struct rtl8169_private *tp, int reg_addr, int value)
1093 {
1094         RTL_W32(tp, EPHYAR, EPHYAR_WRITE_CMD | (value & EPHYAR_DATA_MASK) |
1095                 (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
1096
1097         rtl_loop_wait_low(tp, &rtl_ephyar_cond, 10, 100);
1098
1099         udelay(10);
1100 }
1101
1102 static u16 rtl_ephy_read(struct rtl8169_private *tp, int reg_addr)
1103 {
1104         RTL_W32(tp, EPHYAR, (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
1105
1106         return rtl_loop_wait_high(tp, &rtl_ephyar_cond, 10, 100) ?
1107                 RTL_R32(tp, EPHYAR) & EPHYAR_DATA_MASK : ~0;
1108 }
1109
1110 static u32 r8168dp_ocp_read(struct rtl8169_private *tp, u16 reg)
1111 {
1112         RTL_W32(tp, OCPAR, 0x0fu << 12 | (reg & 0x0fff));
1113         return rtl_loop_wait_high(tp, &rtl_ocpar_cond, 100, 20) ?
1114                 RTL_R32(tp, OCPDR) : ~0;
1115 }
1116
1117 static u32 r8168ep_ocp_read(struct rtl8169_private *tp, u16 reg)
1118 {
1119         return _rtl_eri_read(tp, reg, ERIAR_OOB);
1120 }
1121
1122 static void r8168dp_ocp_write(struct rtl8169_private *tp, u8 mask, u16 reg,
1123                               u32 data)
1124 {
1125         RTL_W32(tp, OCPDR, data);
1126         RTL_W32(tp, OCPAR, OCPAR_FLAG | ((u32)mask & 0x0f) << 12 | (reg & 0x0fff));
1127         rtl_loop_wait_low(tp, &rtl_ocpar_cond, 100, 20);
1128 }
1129
1130 static void r8168ep_ocp_write(struct rtl8169_private *tp, u8 mask, u16 reg,
1131                               u32 data)
1132 {
1133         _rtl_eri_write(tp, reg, ((u32)mask & 0x0f) << ERIAR_MASK_SHIFT,
1134                        data, ERIAR_OOB);
1135 }
1136
1137 static void r8168dp_oob_notify(struct rtl8169_private *tp, u8 cmd)
1138 {
1139         rtl_eri_write(tp, 0xe8, ERIAR_MASK_0001, cmd);
1140
1141         r8168dp_ocp_write(tp, 0x1, 0x30, 0x00000001);
1142 }
1143
1144 #define OOB_CMD_RESET           0x00
1145 #define OOB_CMD_DRIVER_START    0x05
1146 #define OOB_CMD_DRIVER_STOP     0x06
1147
1148 static u16 rtl8168_get_ocp_reg(struct rtl8169_private *tp)
1149 {
1150         return (tp->mac_version == RTL_GIGA_MAC_VER_31) ? 0xb8 : 0x10;
1151 }
1152
1153 DECLARE_RTL_COND(rtl_dp_ocp_read_cond)
1154 {
1155         u16 reg;
1156
1157         reg = rtl8168_get_ocp_reg(tp);
1158
1159         return r8168dp_ocp_read(tp, reg) & 0x00000800;
1160 }
1161
1162 DECLARE_RTL_COND(rtl_ep_ocp_read_cond)
1163 {
1164         return r8168ep_ocp_read(tp, 0x124) & 0x00000001;
1165 }
1166
1167 DECLARE_RTL_COND(rtl_ocp_tx_cond)
1168 {
1169         return RTL_R8(tp, IBISR0) & 0x20;
1170 }
1171
1172 static void rtl8168ep_stop_cmac(struct rtl8169_private *tp)
1173 {
1174         RTL_W8(tp, IBCR2, RTL_R8(tp, IBCR2) & ~0x01);
1175         rtl_loop_wait_high(tp, &rtl_ocp_tx_cond, 50000, 2000);
1176         RTL_W8(tp, IBISR0, RTL_R8(tp, IBISR0) | 0x20);
1177         RTL_W8(tp, IBCR0, RTL_R8(tp, IBCR0) & ~0x01);
1178 }
1179
1180 static void rtl8168dp_driver_start(struct rtl8169_private *tp)
1181 {
1182         r8168dp_oob_notify(tp, OOB_CMD_DRIVER_START);
1183         rtl_loop_wait_high(tp, &rtl_dp_ocp_read_cond, 10000, 10);
1184 }
1185
1186 static void rtl8168ep_driver_start(struct rtl8169_private *tp)
1187 {
1188         r8168ep_ocp_write(tp, 0x01, 0x180, OOB_CMD_DRIVER_START);
1189         r8168ep_ocp_write(tp, 0x01, 0x30, r8168ep_ocp_read(tp, 0x30) | 0x01);
1190         rtl_loop_wait_high(tp, &rtl_ep_ocp_read_cond, 10000, 10);
1191 }
1192
1193 static void rtl8168_driver_start(struct rtl8169_private *tp)
1194 {
1195         if (tp->dash_type == RTL_DASH_DP)
1196                 rtl8168dp_driver_start(tp);
1197         else
1198                 rtl8168ep_driver_start(tp);
1199 }
1200
1201 static void rtl8168dp_driver_stop(struct rtl8169_private *tp)
1202 {
1203         r8168dp_oob_notify(tp, OOB_CMD_DRIVER_STOP);
1204         rtl_loop_wait_low(tp, &rtl_dp_ocp_read_cond, 10000, 10);
1205 }
1206
1207 static void rtl8168ep_driver_stop(struct rtl8169_private *tp)
1208 {
1209         rtl8168ep_stop_cmac(tp);
1210         r8168ep_ocp_write(tp, 0x01, 0x180, OOB_CMD_DRIVER_STOP);
1211         r8168ep_ocp_write(tp, 0x01, 0x30, r8168ep_ocp_read(tp, 0x30) | 0x01);
1212         rtl_loop_wait_low(tp, &rtl_ep_ocp_read_cond, 10000, 10);
1213 }
1214
1215 static void rtl8168_driver_stop(struct rtl8169_private *tp)
1216 {
1217         if (tp->dash_type == RTL_DASH_DP)
1218                 rtl8168dp_driver_stop(tp);
1219         else
1220                 rtl8168ep_driver_stop(tp);
1221 }
1222
1223 static bool r8168dp_check_dash(struct rtl8169_private *tp)
1224 {
1225         u16 reg = rtl8168_get_ocp_reg(tp);
1226
1227         return r8168dp_ocp_read(tp, reg) & BIT(15);
1228 }
1229
1230 static bool r8168ep_check_dash(struct rtl8169_private *tp)
1231 {
1232         return r8168ep_ocp_read(tp, 0x128) & BIT(0);
1233 }
1234
1235 static enum rtl_dash_type rtl_check_dash(struct rtl8169_private *tp)
1236 {
1237         switch (tp->mac_version) {
1238         case RTL_GIGA_MAC_VER_27:
1239         case RTL_GIGA_MAC_VER_28:
1240         case RTL_GIGA_MAC_VER_31:
1241                 return r8168dp_check_dash(tp) ? RTL_DASH_DP : RTL_DASH_NONE;
1242         case RTL_GIGA_MAC_VER_49 ... RTL_GIGA_MAC_VER_53:
1243                 return r8168ep_check_dash(tp) ? RTL_DASH_EP : RTL_DASH_NONE;
1244         default:
1245                 return RTL_DASH_NONE;
1246         }
1247 }
1248
1249 static void rtl_set_d3_pll_down(struct rtl8169_private *tp, bool enable)
1250 {
1251         switch (tp->mac_version) {
1252         case RTL_GIGA_MAC_VER_25 ... RTL_GIGA_MAC_VER_26:
1253         case RTL_GIGA_MAC_VER_29 ... RTL_GIGA_MAC_VER_30:
1254         case RTL_GIGA_MAC_VER_32 ... RTL_GIGA_MAC_VER_37:
1255         case RTL_GIGA_MAC_VER_39 ... RTL_GIGA_MAC_VER_63:
1256                 if (enable)
1257                         RTL_W8(tp, PMCH, RTL_R8(tp, PMCH) & ~D3_NO_PLL_DOWN);
1258                 else
1259                         RTL_W8(tp, PMCH, RTL_R8(tp, PMCH) | D3_NO_PLL_DOWN);
1260                 break;
1261         default:
1262                 break;
1263         }
1264 }
1265
1266 static void rtl_reset_packet_filter(struct rtl8169_private *tp)
1267 {
1268         rtl_eri_clear_bits(tp, 0xdc, BIT(0));
1269         rtl_eri_set_bits(tp, 0xdc, BIT(0));
1270 }
1271
1272 DECLARE_RTL_COND(rtl_efusear_cond)
1273 {
1274         return RTL_R32(tp, EFUSEAR) & EFUSEAR_FLAG;
1275 }
1276
1277 u8 rtl8168d_efuse_read(struct rtl8169_private *tp, int reg_addr)
1278 {
1279         RTL_W32(tp, EFUSEAR, (reg_addr & EFUSEAR_REG_MASK) << EFUSEAR_REG_SHIFT);
1280
1281         return rtl_loop_wait_high(tp, &rtl_efusear_cond, 100, 300) ?
1282                 RTL_R32(tp, EFUSEAR) & EFUSEAR_DATA_MASK : ~0;
1283 }
1284
1285 static u32 rtl_get_events(struct rtl8169_private *tp)
1286 {
1287         if (rtl_is_8125(tp))
1288                 return RTL_R32(tp, IntrStatus_8125);
1289         else
1290                 return RTL_R16(tp, IntrStatus);
1291 }
1292
1293 static void rtl_ack_events(struct rtl8169_private *tp, u32 bits)
1294 {
1295         if (rtl_is_8125(tp))
1296                 RTL_W32(tp, IntrStatus_8125, bits);
1297         else
1298                 RTL_W16(tp, IntrStatus, bits);
1299 }
1300
1301 static void rtl_irq_disable(struct rtl8169_private *tp)
1302 {
1303         if (rtl_is_8125(tp))
1304                 RTL_W32(tp, IntrMask_8125, 0);
1305         else
1306                 RTL_W16(tp, IntrMask, 0);
1307 }
1308
1309 static void rtl_irq_enable(struct rtl8169_private *tp)
1310 {
1311         if (rtl_is_8125(tp))
1312                 RTL_W32(tp, IntrMask_8125, tp->irq_mask);
1313         else
1314                 RTL_W16(tp, IntrMask, tp->irq_mask);
1315 }
1316
1317 static void rtl8169_irq_mask_and_ack(struct rtl8169_private *tp)
1318 {
1319         rtl_irq_disable(tp);
1320         rtl_ack_events(tp, 0xffffffff);
1321         rtl_pci_commit(tp);
1322 }
1323
1324 static void rtl_link_chg_patch(struct rtl8169_private *tp)
1325 {
1326         struct phy_device *phydev = tp->phydev;
1327
1328         if (tp->mac_version == RTL_GIGA_MAC_VER_34 ||
1329             tp->mac_version == RTL_GIGA_MAC_VER_38) {
1330                 if (phydev->speed == SPEED_1000) {
1331                         rtl_eri_write(tp, 0x1bc, ERIAR_MASK_1111, 0x00000011);
1332                         rtl_eri_write(tp, 0x1dc, ERIAR_MASK_1111, 0x00000005);
1333                 } else if (phydev->speed == SPEED_100) {
1334                         rtl_eri_write(tp, 0x1bc, ERIAR_MASK_1111, 0x0000001f);
1335                         rtl_eri_write(tp, 0x1dc, ERIAR_MASK_1111, 0x00000005);
1336                 } else {
1337                         rtl_eri_write(tp, 0x1bc, ERIAR_MASK_1111, 0x0000001f);
1338                         rtl_eri_write(tp, 0x1dc, ERIAR_MASK_1111, 0x0000003f);
1339                 }
1340                 rtl_reset_packet_filter(tp);
1341         } else if (tp->mac_version == RTL_GIGA_MAC_VER_35 ||
1342                    tp->mac_version == RTL_GIGA_MAC_VER_36) {
1343                 if (phydev->speed == SPEED_1000) {
1344                         rtl_eri_write(tp, 0x1bc, ERIAR_MASK_1111, 0x00000011);
1345                         rtl_eri_write(tp, 0x1dc, ERIAR_MASK_1111, 0x00000005);
1346                 } else {
1347                         rtl_eri_write(tp, 0x1bc, ERIAR_MASK_1111, 0x0000001f);
1348                         rtl_eri_write(tp, 0x1dc, ERIAR_MASK_1111, 0x0000003f);
1349                 }
1350         } else if (tp->mac_version == RTL_GIGA_MAC_VER_37) {
1351                 if (phydev->speed == SPEED_10) {
1352                         rtl_eri_write(tp, 0x1d0, ERIAR_MASK_0011, 0x4d02);
1353                         rtl_eri_write(tp, 0x1dc, ERIAR_MASK_0011, 0x0060a);
1354                 } else {
1355                         rtl_eri_write(tp, 0x1d0, ERIAR_MASK_0011, 0x0000);
1356                 }
1357         }
1358 }
1359
1360 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
1361
1362 static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1363 {
1364         struct rtl8169_private *tp = netdev_priv(dev);
1365
1366         wol->supported = WAKE_ANY;
1367         wol->wolopts = tp->saved_wolopts;
1368 }
1369
1370 static void __rtl8169_set_wol(struct rtl8169_private *tp, u32 wolopts)
1371 {
1372         static const struct {
1373                 u32 opt;
1374                 u16 reg;
1375                 u8  mask;
1376         } cfg[] = {
1377                 { WAKE_PHY,   Config3, LinkUp },
1378                 { WAKE_UCAST, Config5, UWF },
1379                 { WAKE_BCAST, Config5, BWF },
1380                 { WAKE_MCAST, Config5, MWF },
1381                 { WAKE_ANY,   Config5, LanWake },
1382                 { WAKE_MAGIC, Config3, MagicPacket }
1383         };
1384         unsigned int i, tmp = ARRAY_SIZE(cfg);
1385         u8 options;
1386
1387         rtl_unlock_config_regs(tp);
1388
1389         if (rtl_is_8168evl_up(tp)) {
1390                 tmp--;
1391                 if (wolopts & WAKE_MAGIC)
1392                         rtl_eri_set_bits(tp, 0x0dc, MagicPacket_v2);
1393                 else
1394                         rtl_eri_clear_bits(tp, 0x0dc, MagicPacket_v2);
1395         } else if (rtl_is_8125(tp)) {
1396                 tmp--;
1397                 if (wolopts & WAKE_MAGIC)
1398                         r8168_mac_ocp_modify(tp, 0xc0b6, 0, BIT(0));
1399                 else
1400                         r8168_mac_ocp_modify(tp, 0xc0b6, BIT(0), 0);
1401         }
1402
1403         for (i = 0; i < tmp; i++) {
1404                 options = RTL_R8(tp, cfg[i].reg) & ~cfg[i].mask;
1405                 if (wolopts & cfg[i].opt)
1406                         options |= cfg[i].mask;
1407                 RTL_W8(tp, cfg[i].reg, options);
1408         }
1409
1410         switch (tp->mac_version) {
1411         case RTL_GIGA_MAC_VER_02 ... RTL_GIGA_MAC_VER_06:
1412                 options = RTL_R8(tp, Config1) & ~PMEnable;
1413                 if (wolopts)
1414                         options |= PMEnable;
1415                 RTL_W8(tp, Config1, options);
1416                 break;
1417         case RTL_GIGA_MAC_VER_34:
1418         case RTL_GIGA_MAC_VER_37:
1419         case RTL_GIGA_MAC_VER_39 ... RTL_GIGA_MAC_VER_63:
1420                 options = RTL_R8(tp, Config2) & ~PME_SIGNAL;
1421                 if (wolopts)
1422                         options |= PME_SIGNAL;
1423                 RTL_W8(tp, Config2, options);
1424                 break;
1425         default:
1426                 break;
1427         }
1428
1429         rtl_lock_config_regs(tp);
1430
1431         device_set_wakeup_enable(tp_to_dev(tp), wolopts);
1432         rtl_set_d3_pll_down(tp, !wolopts);
1433         tp->dev->wol_enabled = wolopts ? 1 : 0;
1434 }
1435
1436 static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1437 {
1438         struct rtl8169_private *tp = netdev_priv(dev);
1439
1440         if (wol->wolopts & ~WAKE_ANY)
1441                 return -EINVAL;
1442
1443         tp->saved_wolopts = wol->wolopts;
1444         __rtl8169_set_wol(tp, tp->saved_wolopts);
1445
1446         return 0;
1447 }
1448
1449 static void rtl8169_get_drvinfo(struct net_device *dev,
1450                                 struct ethtool_drvinfo *info)
1451 {
1452         struct rtl8169_private *tp = netdev_priv(dev);
1453         struct rtl_fw *rtl_fw = tp->rtl_fw;
1454
1455         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
1456         strlcpy(info->bus_info, pci_name(tp->pci_dev), sizeof(info->bus_info));
1457         BUILD_BUG_ON(sizeof(info->fw_version) < sizeof(rtl_fw->version));
1458         if (rtl_fw)
1459                 strlcpy(info->fw_version, rtl_fw->version,
1460                         sizeof(info->fw_version));
1461 }
1462
1463 static int rtl8169_get_regs_len(struct net_device *dev)
1464 {
1465         return R8169_REGS_SIZE;
1466 }
1467
1468 static netdev_features_t rtl8169_fix_features(struct net_device *dev,
1469         netdev_features_t features)
1470 {
1471         struct rtl8169_private *tp = netdev_priv(dev);
1472
1473         if (dev->mtu > TD_MSS_MAX)
1474                 features &= ~NETIF_F_ALL_TSO;
1475
1476         if (dev->mtu > ETH_DATA_LEN &&
1477             tp->mac_version > RTL_GIGA_MAC_VER_06)
1478                 features &= ~(NETIF_F_CSUM_MASK | NETIF_F_ALL_TSO);
1479
1480         return features;
1481 }
1482
1483 static void rtl_set_rx_config_features(struct rtl8169_private *tp,
1484                                        netdev_features_t features)
1485 {
1486         u32 rx_config = RTL_R32(tp, RxConfig);
1487
1488         if (features & NETIF_F_RXALL)
1489                 rx_config |= RX_CONFIG_ACCEPT_ERR_MASK;
1490         else
1491                 rx_config &= ~RX_CONFIG_ACCEPT_ERR_MASK;
1492
1493         if (rtl_is_8125(tp)) {
1494                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
1495                         rx_config |= RX_VLAN_8125;
1496                 else
1497                         rx_config &= ~RX_VLAN_8125;
1498         }
1499
1500         RTL_W32(tp, RxConfig, rx_config);
1501 }
1502
1503 static int rtl8169_set_features(struct net_device *dev,
1504                                 netdev_features_t features)
1505 {
1506         struct rtl8169_private *tp = netdev_priv(dev);
1507
1508         rtl_set_rx_config_features(tp, features);
1509
1510         if (features & NETIF_F_RXCSUM)
1511                 tp->cp_cmd |= RxChkSum;
1512         else
1513                 tp->cp_cmd &= ~RxChkSum;
1514
1515         if (!rtl_is_8125(tp)) {
1516                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
1517                         tp->cp_cmd |= RxVlan;
1518                 else
1519                         tp->cp_cmd &= ~RxVlan;
1520         }
1521
1522         RTL_W16(tp, CPlusCmd, tp->cp_cmd);
1523         rtl_pci_commit(tp);
1524
1525         return 0;
1526 }
1527
1528 static inline u32 rtl8169_tx_vlan_tag(struct sk_buff *skb)
1529 {
1530         return (skb_vlan_tag_present(skb)) ?
1531                 TxVlanTag | swab16(skb_vlan_tag_get(skb)) : 0x00;
1532 }
1533
1534 static void rtl8169_rx_vlan_tag(struct RxDesc *desc, struct sk_buff *skb)
1535 {
1536         u32 opts2 = le32_to_cpu(desc->opts2);
1537
1538         if (opts2 & RxVlanTag)
1539                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), swab16(opts2 & 0xffff));
1540 }
1541
1542 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1543                              void *p)
1544 {
1545         struct rtl8169_private *tp = netdev_priv(dev);
1546         u32 __iomem *data = tp->mmio_addr;
1547         u32 *dw = p;
1548         int i;
1549
1550         for (i = 0; i < R8169_REGS_SIZE; i += 4)
1551                 memcpy_fromio(dw++, data++, 4);
1552 }
1553
1554 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
1555         "tx_packets",
1556         "rx_packets",
1557         "tx_errors",
1558         "rx_errors",
1559         "rx_missed",
1560         "align_errors",
1561         "tx_single_collisions",
1562         "tx_multi_collisions",
1563         "unicast",
1564         "broadcast",
1565         "multicast",
1566         "tx_aborted",
1567         "tx_underrun",
1568 };
1569
1570 static int rtl8169_get_sset_count(struct net_device *dev, int sset)
1571 {
1572         switch (sset) {
1573         case ETH_SS_STATS:
1574                 return ARRAY_SIZE(rtl8169_gstrings);
1575         default:
1576                 return -EOPNOTSUPP;
1577         }
1578 }
1579
1580 DECLARE_RTL_COND(rtl_counters_cond)
1581 {
1582         return RTL_R32(tp, CounterAddrLow) & (CounterReset | CounterDump);
1583 }
1584
1585 static void rtl8169_do_counters(struct rtl8169_private *tp, u32 counter_cmd)
1586 {
1587         u32 cmd = lower_32_bits(tp->counters_phys_addr);
1588
1589         RTL_W32(tp, CounterAddrHigh, upper_32_bits(tp->counters_phys_addr));
1590         rtl_pci_commit(tp);
1591         RTL_W32(tp, CounterAddrLow, cmd);
1592         RTL_W32(tp, CounterAddrLow, cmd | counter_cmd);
1593
1594         rtl_loop_wait_low(tp, &rtl_counters_cond, 10, 1000);
1595 }
1596
1597 static void rtl8169_update_counters(struct rtl8169_private *tp)
1598 {
1599         u8 val = RTL_R8(tp, ChipCmd);
1600
1601         /*
1602          * Some chips are unable to dump tally counters when the receiver
1603          * is disabled. If 0xff chip may be in a PCI power-save state.
1604          */
1605         if (val & CmdRxEnb && val != 0xff)
1606                 rtl8169_do_counters(tp, CounterDump);
1607 }
1608
1609 static void rtl8169_init_counter_offsets(struct rtl8169_private *tp)
1610 {
1611         struct rtl8169_counters *counters = tp->counters;
1612
1613         /*
1614          * rtl8169_init_counter_offsets is called from rtl_open.  On chip
1615          * versions prior to RTL_GIGA_MAC_VER_19 the tally counters are only
1616          * reset by a power cycle, while the counter values collected by the
1617          * driver are reset at every driver unload/load cycle.
1618          *
1619          * To make sure the HW values returned by @get_stats64 match the SW
1620          * values, we collect the initial values at first open(*) and use them
1621          * as offsets to normalize the values returned by @get_stats64.
1622          *
1623          * (*) We can't call rtl8169_init_counter_offsets from rtl_init_one
1624          * for the reason stated in rtl8169_update_counters; CmdRxEnb is only
1625          * set at open time by rtl_hw_start.
1626          */
1627
1628         if (tp->tc_offset.inited)
1629                 return;
1630
1631         if (tp->mac_version >= RTL_GIGA_MAC_VER_19) {
1632                 rtl8169_do_counters(tp, CounterReset);
1633         } else {
1634                 rtl8169_update_counters(tp);
1635                 tp->tc_offset.tx_errors = counters->tx_errors;
1636                 tp->tc_offset.tx_multi_collision = counters->tx_multi_collision;
1637                 tp->tc_offset.tx_aborted = counters->tx_aborted;
1638                 tp->tc_offset.rx_missed = counters->rx_missed;
1639         }
1640
1641         tp->tc_offset.inited = true;
1642 }
1643
1644 static void rtl8169_get_ethtool_stats(struct net_device *dev,
1645                                       struct ethtool_stats *stats, u64 *data)
1646 {
1647         struct rtl8169_private *tp = netdev_priv(dev);
1648         struct rtl8169_counters *counters;
1649
1650         counters = tp->counters;
1651         rtl8169_update_counters(tp);
1652
1653         data[0] = le64_to_cpu(counters->tx_packets);
1654         data[1] = le64_to_cpu(counters->rx_packets);
1655         data[2] = le64_to_cpu(counters->tx_errors);
1656         data[3] = le32_to_cpu(counters->rx_errors);
1657         data[4] = le16_to_cpu(counters->rx_missed);
1658         data[5] = le16_to_cpu(counters->align_errors);
1659         data[6] = le32_to_cpu(counters->tx_one_collision);
1660         data[7] = le32_to_cpu(counters->tx_multi_collision);
1661         data[8] = le64_to_cpu(counters->rx_unicast);
1662         data[9] = le64_to_cpu(counters->rx_broadcast);
1663         data[10] = le32_to_cpu(counters->rx_multicast);
1664         data[11] = le16_to_cpu(counters->tx_aborted);
1665         data[12] = le16_to_cpu(counters->tx_underun);
1666 }
1667
1668 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1669 {
1670         switch(stringset) {
1671         case ETH_SS_STATS:
1672                 memcpy(data, rtl8169_gstrings, sizeof(rtl8169_gstrings));
1673                 break;
1674         }
1675 }
1676
1677 /*
1678  * Interrupt coalescing
1679  *
1680  * > 1 - the availability of the IntrMitigate (0xe2) register through the
1681  * >     8169, 8168 and 810x line of chipsets
1682  *
1683  * 8169, 8168, and 8136(810x) serial chipsets support it.
1684  *
1685  * > 2 - the Tx timer unit at gigabit speed
1686  *
1687  * The unit of the timer depends on both the speed and the setting of CPlusCmd
1688  * (0xe0) bit 1 and bit 0.
1689  *
1690  * For 8169
1691  * bit[1:0] \ speed        1000M           100M            10M
1692  * 0 0                     320ns           2.56us          40.96us
1693  * 0 1                     2.56us          20.48us         327.7us
1694  * 1 0                     5.12us          40.96us         655.4us
1695  * 1 1                     10.24us         81.92us         1.31ms
1696  *
1697  * For the other
1698  * bit[1:0] \ speed        1000M           100M            10M
1699  * 0 0                     5us             2.56us          40.96us
1700  * 0 1                     40us            20.48us         327.7us
1701  * 1 0                     80us            40.96us         655.4us
1702  * 1 1                     160us           81.92us         1.31ms
1703  */
1704
1705 /* rx/tx scale factors for all CPlusCmd[0:1] cases */
1706 struct rtl_coalesce_info {
1707         u32 speed;
1708         u32 scale_nsecs[4];
1709 };
1710
1711 /* produce array with base delay *1, *8, *8*2, *8*2*2 */
1712 #define COALESCE_DELAY(d) { (d), 8 * (d), 16 * (d), 32 * (d) }
1713
1714 static const struct rtl_coalesce_info rtl_coalesce_info_8169[] = {
1715         { SPEED_1000,   COALESCE_DELAY(320) },
1716         { SPEED_100,    COALESCE_DELAY(2560) },
1717         { SPEED_10,     COALESCE_DELAY(40960) },
1718         { 0 },
1719 };
1720
1721 static const struct rtl_coalesce_info rtl_coalesce_info_8168_8136[] = {
1722         { SPEED_1000,   COALESCE_DELAY(5000) },
1723         { SPEED_100,    COALESCE_DELAY(2560) },
1724         { SPEED_10,     COALESCE_DELAY(40960) },
1725         { 0 },
1726 };
1727 #undef COALESCE_DELAY
1728
1729 /* get rx/tx scale vector corresponding to current speed */
1730 static const struct rtl_coalesce_info *
1731 rtl_coalesce_info(struct rtl8169_private *tp)
1732 {
1733         const struct rtl_coalesce_info *ci;
1734
1735         if (tp->mac_version <= RTL_GIGA_MAC_VER_06)
1736                 ci = rtl_coalesce_info_8169;
1737         else
1738                 ci = rtl_coalesce_info_8168_8136;
1739
1740         /* if speed is unknown assume highest one */
1741         if (tp->phydev->speed == SPEED_UNKNOWN)
1742                 return ci;
1743
1744         for (; ci->speed; ci++) {
1745                 if (tp->phydev->speed == ci->speed)
1746                         return ci;
1747         }
1748
1749         return ERR_PTR(-ELNRNG);
1750 }
1751
1752 static int rtl_get_coalesce(struct net_device *dev, struct ethtool_coalesce *ec)
1753 {
1754         struct rtl8169_private *tp = netdev_priv(dev);
1755         const struct rtl_coalesce_info *ci;
1756         u32 scale, c_us, c_fr;
1757         u16 intrmit;
1758
1759         if (rtl_is_8125(tp))
1760                 return -EOPNOTSUPP;
1761
1762         memset(ec, 0, sizeof(*ec));
1763
1764         /* get rx/tx scale corresponding to current speed and CPlusCmd[0:1] */
1765         ci = rtl_coalesce_info(tp);
1766         if (IS_ERR(ci))
1767                 return PTR_ERR(ci);
1768
1769         scale = ci->scale_nsecs[tp->cp_cmd & INTT_MASK];
1770
1771         intrmit = RTL_R16(tp, IntrMitigate);
1772
1773         c_us = FIELD_GET(RTL_COALESCE_TX_USECS, intrmit);
1774         ec->tx_coalesce_usecs = DIV_ROUND_UP(c_us * scale, 1000);
1775
1776         c_fr = FIELD_GET(RTL_COALESCE_TX_FRAMES, intrmit);
1777         /* ethtool_coalesce states usecs and max_frames must not both be 0 */
1778         ec->tx_max_coalesced_frames = (c_us || c_fr) ? c_fr * 4 : 1;
1779
1780         c_us = FIELD_GET(RTL_COALESCE_RX_USECS, intrmit);
1781         ec->rx_coalesce_usecs = DIV_ROUND_UP(c_us * scale, 1000);
1782
1783         c_fr = FIELD_GET(RTL_COALESCE_RX_FRAMES, intrmit);
1784         ec->rx_max_coalesced_frames = (c_us || c_fr) ? c_fr * 4 : 1;
1785
1786         return 0;
1787 }
1788
1789 /* choose appropriate scale factor and CPlusCmd[0:1] for (speed, usec) */
1790 static int rtl_coalesce_choose_scale(struct rtl8169_private *tp, u32 usec,
1791                                      u16 *cp01)
1792 {
1793         const struct rtl_coalesce_info *ci;
1794         u16 i;
1795
1796         ci = rtl_coalesce_info(tp);
1797         if (IS_ERR(ci))
1798                 return PTR_ERR(ci);
1799
1800         for (i = 0; i < 4; i++) {
1801                 if (usec <= ci->scale_nsecs[i] * RTL_COALESCE_T_MAX / 1000U) {
1802                         *cp01 = i;
1803                         return ci->scale_nsecs[i];
1804                 }
1805         }
1806
1807         return -ERANGE;
1808 }
1809
1810 static int rtl_set_coalesce(struct net_device *dev, struct ethtool_coalesce *ec)
1811 {
1812         struct rtl8169_private *tp = netdev_priv(dev);
1813         u32 tx_fr = ec->tx_max_coalesced_frames;
1814         u32 rx_fr = ec->rx_max_coalesced_frames;
1815         u32 coal_usec_max, units;
1816         u16 w = 0, cp01 = 0;
1817         int scale;
1818
1819         if (rtl_is_8125(tp))
1820                 return -EOPNOTSUPP;
1821
1822         if (rx_fr > RTL_COALESCE_FRAME_MAX || tx_fr > RTL_COALESCE_FRAME_MAX)
1823                 return -ERANGE;
1824
1825         coal_usec_max = max(ec->rx_coalesce_usecs, ec->tx_coalesce_usecs);
1826         scale = rtl_coalesce_choose_scale(tp, coal_usec_max, &cp01);
1827         if (scale < 0)
1828                 return scale;
1829
1830         /* Accept max_frames=1 we returned in rtl_get_coalesce. Accept it
1831          * not only when usecs=0 because of e.g. the following scenario:
1832          *
1833          * - both rx_usecs=0 & rx_frames=0 in hardware (no delay on RX)
1834          * - rtl_get_coalesce returns rx_usecs=0, rx_frames=1
1835          * - then user does `ethtool -C eth0 rx-usecs 100`
1836          *
1837          * Since ethtool sends to kernel whole ethtool_coalesce settings,
1838          * if we want to ignore rx_frames then it has to be set to 0.
1839          */
1840         if (rx_fr == 1)
1841                 rx_fr = 0;
1842         if (tx_fr == 1)
1843                 tx_fr = 0;
1844
1845         /* HW requires time limit to be set if frame limit is set */
1846         if ((tx_fr && !ec->tx_coalesce_usecs) ||
1847             (rx_fr && !ec->rx_coalesce_usecs))
1848                 return -EINVAL;
1849
1850         w |= FIELD_PREP(RTL_COALESCE_TX_FRAMES, DIV_ROUND_UP(tx_fr, 4));
1851         w |= FIELD_PREP(RTL_COALESCE_RX_FRAMES, DIV_ROUND_UP(rx_fr, 4));
1852
1853         units = DIV_ROUND_UP(ec->tx_coalesce_usecs * 1000U, scale);
1854         w |= FIELD_PREP(RTL_COALESCE_TX_USECS, units);
1855         units = DIV_ROUND_UP(ec->rx_coalesce_usecs * 1000U, scale);
1856         w |= FIELD_PREP(RTL_COALESCE_RX_USECS, units);
1857
1858         RTL_W16(tp, IntrMitigate, w);
1859
1860         /* Meaning of PktCntrDisable bit changed from RTL8168e-vl */
1861         if (rtl_is_8168evl_up(tp)) {
1862                 if (!rx_fr && !tx_fr)
1863                         /* disable packet counter */
1864                         tp->cp_cmd |= PktCntrDisable;
1865                 else
1866                         tp->cp_cmd &= ~PktCntrDisable;
1867         }
1868
1869         tp->cp_cmd = (tp->cp_cmd & ~INTT_MASK) | cp01;
1870         RTL_W16(tp, CPlusCmd, tp->cp_cmd);
1871         rtl_pci_commit(tp);
1872
1873         return 0;
1874 }
1875
1876 static int rtl8169_get_eee(struct net_device *dev, struct ethtool_eee *data)
1877 {
1878         struct rtl8169_private *tp = netdev_priv(dev);
1879
1880         if (!rtl_supports_eee(tp))
1881                 return -EOPNOTSUPP;
1882
1883         return phy_ethtool_get_eee(tp->phydev, data);
1884 }
1885
1886 static int rtl8169_set_eee(struct net_device *dev, struct ethtool_eee *data)
1887 {
1888         struct rtl8169_private *tp = netdev_priv(dev);
1889         int ret;
1890
1891         if (!rtl_supports_eee(tp))
1892                 return -EOPNOTSUPP;
1893
1894         ret = phy_ethtool_set_eee(tp->phydev, data);
1895
1896         if (!ret)
1897                 tp->eee_adv = phy_read_mmd(dev->phydev, MDIO_MMD_AN,
1898                                            MDIO_AN_EEE_ADV);
1899         return ret;
1900 }
1901
1902 static void rtl8169_get_ringparam(struct net_device *dev,
1903                                   struct ethtool_ringparam *data)
1904 {
1905         data->rx_max_pending = NUM_RX_DESC;
1906         data->rx_pending = NUM_RX_DESC;
1907         data->tx_max_pending = NUM_TX_DESC;
1908         data->tx_pending = NUM_TX_DESC;
1909 }
1910
1911 static void rtl8169_get_pauseparam(struct net_device *dev,
1912                                    struct ethtool_pauseparam *data)
1913 {
1914         struct rtl8169_private *tp = netdev_priv(dev);
1915         bool tx_pause, rx_pause;
1916
1917         phy_get_pause(tp->phydev, &tx_pause, &rx_pause);
1918
1919         data->autoneg = tp->phydev->autoneg;
1920         data->tx_pause = tx_pause ? 1 : 0;
1921         data->rx_pause = rx_pause ? 1 : 0;
1922 }
1923
1924 static int rtl8169_set_pauseparam(struct net_device *dev,
1925                                   struct ethtool_pauseparam *data)
1926 {
1927         struct rtl8169_private *tp = netdev_priv(dev);
1928
1929         if (dev->mtu > ETH_DATA_LEN)
1930                 return -EOPNOTSUPP;
1931
1932         phy_set_asym_pause(tp->phydev, data->rx_pause, data->tx_pause);
1933
1934         return 0;
1935 }
1936
1937 static const struct ethtool_ops rtl8169_ethtool_ops = {
1938         .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1939                                      ETHTOOL_COALESCE_MAX_FRAMES,
1940         .get_drvinfo            = rtl8169_get_drvinfo,
1941         .get_regs_len           = rtl8169_get_regs_len,
1942         .get_link               = ethtool_op_get_link,
1943         .get_coalesce           = rtl_get_coalesce,
1944         .set_coalesce           = rtl_set_coalesce,
1945         .get_regs               = rtl8169_get_regs,
1946         .get_wol                = rtl8169_get_wol,
1947         .set_wol                = rtl8169_set_wol,
1948         .get_strings            = rtl8169_get_strings,
1949         .get_sset_count         = rtl8169_get_sset_count,
1950         .get_ethtool_stats      = rtl8169_get_ethtool_stats,
1951         .get_ts_info            = ethtool_op_get_ts_info,
1952         .nway_reset             = phy_ethtool_nway_reset,
1953         .get_eee                = rtl8169_get_eee,
1954         .set_eee                = rtl8169_set_eee,
1955         .get_link_ksettings     = phy_ethtool_get_link_ksettings,
1956         .set_link_ksettings     = phy_ethtool_set_link_ksettings,
1957         .get_ringparam          = rtl8169_get_ringparam,
1958         .get_pauseparam         = rtl8169_get_pauseparam,
1959         .set_pauseparam         = rtl8169_set_pauseparam,
1960 };
1961
1962 static void rtl_enable_eee(struct rtl8169_private *tp)
1963 {
1964         struct phy_device *phydev = tp->phydev;
1965         int adv;
1966
1967         /* respect EEE advertisement the user may have set */
1968         if (tp->eee_adv >= 0)
1969                 adv = tp->eee_adv;
1970         else
1971                 adv = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
1972
1973         if (adv >= 0)
1974                 phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv);
1975 }
1976
1977 static enum mac_version rtl8169_get_mac_version(u16 xid, bool gmii)
1978 {
1979         /*
1980          * The driver currently handles the 8168Bf and the 8168Be identically
1981          * but they can be identified more specifically through the test below
1982          * if needed:
1983          *
1984          * (RTL_R32(tp, TxConfig) & 0x700000) == 0x500000 ? 8168Bf : 8168Be
1985          *
1986          * Same thing for the 8101Eb and the 8101Ec:
1987          *
1988          * (RTL_R32(tp, TxConfig) & 0x700000) == 0x200000 ? 8101Eb : 8101Ec
1989          */
1990         static const struct rtl_mac_info {
1991                 u16 mask;
1992                 u16 val;
1993                 enum mac_version ver;
1994         } mac_info[] = {
1995                 /* 8125B family. */
1996                 { 0x7cf, 0x641, RTL_GIGA_MAC_VER_63 },
1997
1998                 /* 8125A family. */
1999                 { 0x7cf, 0x608, RTL_GIGA_MAC_VER_60 },
2000                 { 0x7c8, 0x608, RTL_GIGA_MAC_VER_61 },
2001
2002                 /* RTL8117 */
2003                 { 0x7cf, 0x54b, RTL_GIGA_MAC_VER_53 },
2004                 { 0x7cf, 0x54a, RTL_GIGA_MAC_VER_52 },
2005
2006                 /* 8168EP family. */
2007                 { 0x7cf, 0x502, RTL_GIGA_MAC_VER_51 },
2008                 { 0x7cf, 0x501, RTL_GIGA_MAC_VER_50 },
2009                 { 0x7cf, 0x500, RTL_GIGA_MAC_VER_49 },
2010
2011                 /* 8168H family. */
2012                 { 0x7cf, 0x541, RTL_GIGA_MAC_VER_46 },
2013                 { 0x7cf, 0x540, RTL_GIGA_MAC_VER_45 },
2014
2015                 /* 8168G family. */
2016                 { 0x7cf, 0x5c8, RTL_GIGA_MAC_VER_44 },
2017                 { 0x7cf, 0x509, RTL_GIGA_MAC_VER_42 },
2018                 { 0x7cf, 0x4c1, RTL_GIGA_MAC_VER_41 },
2019                 { 0x7cf, 0x4c0, RTL_GIGA_MAC_VER_40 },
2020
2021                 /* 8168F family. */
2022                 { 0x7c8, 0x488, RTL_GIGA_MAC_VER_38 },
2023                 { 0x7cf, 0x481, RTL_GIGA_MAC_VER_36 },
2024                 { 0x7cf, 0x480, RTL_GIGA_MAC_VER_35 },
2025
2026                 /* 8168E family. */
2027                 { 0x7c8, 0x2c8, RTL_GIGA_MAC_VER_34 },
2028                 { 0x7cf, 0x2c1, RTL_GIGA_MAC_VER_32 },
2029                 { 0x7c8, 0x2c0, RTL_GIGA_MAC_VER_33 },
2030
2031                 /* 8168D family. */
2032                 { 0x7cf, 0x281, RTL_GIGA_MAC_VER_25 },
2033                 { 0x7c8, 0x280, RTL_GIGA_MAC_VER_26 },
2034
2035                 /* 8168DP family. */
2036                 /* It seems this early RTL8168dp version never made it to
2037                  * the wild. Let's see whether somebody complains, if not
2038                  * we'll remove support for this chip version completely.
2039                  * { 0x7cf, 0x288,      RTL_GIGA_MAC_VER_27 },
2040                  */
2041                 { 0x7cf, 0x28a, RTL_GIGA_MAC_VER_28 },
2042                 { 0x7cf, 0x28b, RTL_GIGA_MAC_VER_31 },
2043
2044                 /* 8168C family. */
2045                 { 0x7cf, 0x3c9, RTL_GIGA_MAC_VER_23 },
2046                 { 0x7cf, 0x3c8, RTL_GIGA_MAC_VER_18 },
2047                 { 0x7c8, 0x3c8, RTL_GIGA_MAC_VER_24 },
2048                 { 0x7cf, 0x3c0, RTL_GIGA_MAC_VER_19 },
2049                 { 0x7cf, 0x3c2, RTL_GIGA_MAC_VER_20 },
2050                 { 0x7cf, 0x3c3, RTL_GIGA_MAC_VER_21 },
2051                 { 0x7c8, 0x3c0, RTL_GIGA_MAC_VER_22 },
2052
2053                 /* 8168B family. */
2054                 { 0x7cf, 0x380, RTL_GIGA_MAC_VER_12 },
2055                 { 0x7c8, 0x380, RTL_GIGA_MAC_VER_17 },
2056                 { 0x7c8, 0x300, RTL_GIGA_MAC_VER_11 },
2057
2058                 /* 8101 family. */
2059                 { 0x7c8, 0x448, RTL_GIGA_MAC_VER_39 },
2060                 { 0x7c8, 0x440, RTL_GIGA_MAC_VER_37 },
2061                 { 0x7cf, 0x409, RTL_GIGA_MAC_VER_29 },
2062                 { 0x7c8, 0x408, RTL_GIGA_MAC_VER_30 },
2063                 { 0x7cf, 0x349, RTL_GIGA_MAC_VER_08 },
2064                 { 0x7cf, 0x249, RTL_GIGA_MAC_VER_08 },
2065                 { 0x7cf, 0x348, RTL_GIGA_MAC_VER_07 },
2066                 { 0x7cf, 0x248, RTL_GIGA_MAC_VER_07 },
2067                 { 0x7cf, 0x340, RTL_GIGA_MAC_VER_13 },
2068                 { 0x7cf, 0x240, RTL_GIGA_MAC_VER_14 },
2069                 { 0x7cf, 0x343, RTL_GIGA_MAC_VER_10 },
2070                 { 0x7cf, 0x342, RTL_GIGA_MAC_VER_16 },
2071                 { 0x7c8, 0x348, RTL_GIGA_MAC_VER_09 },
2072                 { 0x7c8, 0x248, RTL_GIGA_MAC_VER_09 },
2073                 { 0x7c8, 0x340, RTL_GIGA_MAC_VER_16 },
2074                 /* FIXME: where did these entries come from ? -- FR
2075                  * Not even r8101 vendor driver knows these id's,
2076                  * so let's disable detection for now. -- HK
2077                  * { 0xfc8, 0x388,      RTL_GIGA_MAC_VER_13 },
2078                  * { 0xfc8, 0x308,      RTL_GIGA_MAC_VER_13 },
2079                  */
2080
2081                 /* 8110 family. */
2082                 { 0xfc8, 0x980, RTL_GIGA_MAC_VER_06 },
2083                 { 0xfc8, 0x180, RTL_GIGA_MAC_VER_05 },
2084                 { 0xfc8, 0x100, RTL_GIGA_MAC_VER_04 },
2085                 { 0xfc8, 0x040, RTL_GIGA_MAC_VER_03 },
2086                 { 0xfc8, 0x008, RTL_GIGA_MAC_VER_02 },
2087
2088                 /* Catch-all */
2089                 { 0x000, 0x000, RTL_GIGA_MAC_NONE   }
2090         };
2091         const struct rtl_mac_info *p = mac_info;
2092         enum mac_version ver;
2093
2094         while ((xid & p->mask) != p->val)
2095                 p++;
2096         ver = p->ver;
2097
2098         if (ver != RTL_GIGA_MAC_NONE && !gmii) {
2099                 if (ver == RTL_GIGA_MAC_VER_42)
2100                         ver = RTL_GIGA_MAC_VER_43;
2101                 else if (ver == RTL_GIGA_MAC_VER_45)
2102                         ver = RTL_GIGA_MAC_VER_47;
2103                 else if (ver == RTL_GIGA_MAC_VER_46)
2104                         ver = RTL_GIGA_MAC_VER_48;
2105         }
2106
2107         return ver;
2108 }
2109
2110 static void rtl_release_firmware(struct rtl8169_private *tp)
2111 {
2112         if (tp->rtl_fw) {
2113                 rtl_fw_release_firmware(tp->rtl_fw);
2114                 kfree(tp->rtl_fw);
2115                 tp->rtl_fw = NULL;
2116         }
2117 }
2118
2119 void r8169_apply_firmware(struct rtl8169_private *tp)
2120 {
2121         int val;
2122
2123         /* TODO: release firmware if rtl_fw_write_firmware signals failure. */
2124         if (tp->rtl_fw) {
2125                 rtl_fw_write_firmware(tp, tp->rtl_fw);
2126                 /* At least one firmware doesn't reset tp->ocp_base. */
2127                 tp->ocp_base = OCP_STD_PHY_BASE;
2128
2129                 /* PHY soft reset may still be in progress */
2130                 phy_read_poll_timeout(tp->phydev, MII_BMCR, val,
2131                                       !(val & BMCR_RESET),
2132                                       50000, 600000, true);
2133         }
2134 }
2135
2136 static void rtl8168_config_eee_mac(struct rtl8169_private *tp)
2137 {
2138         /* Adjust EEE LED frequency */
2139         if (tp->mac_version != RTL_GIGA_MAC_VER_38)
2140                 RTL_W8(tp, EEE_LED, RTL_R8(tp, EEE_LED) & ~0x07);
2141
2142         rtl_eri_set_bits(tp, 0x1b0, 0x0003);
2143 }
2144
2145 static void rtl8125a_config_eee_mac(struct rtl8169_private *tp)
2146 {
2147         r8168_mac_ocp_modify(tp, 0xe040, 0, BIT(1) | BIT(0));
2148         r8168_mac_ocp_modify(tp, 0xeb62, 0, BIT(2) | BIT(1));
2149 }
2150
2151 static void rtl8125_set_eee_txidle_timer(struct rtl8169_private *tp)
2152 {
2153         RTL_W16(tp, EEE_TXIDLE_TIMER_8125, tp->dev->mtu + ETH_HLEN + 0x20);
2154 }
2155
2156 static void rtl8125b_config_eee_mac(struct rtl8169_private *tp)
2157 {
2158         rtl8125_set_eee_txidle_timer(tp);
2159         r8168_mac_ocp_modify(tp, 0xe040, 0, BIT(1) | BIT(0));
2160 }
2161
2162 static void rtl_rar_exgmac_set(struct rtl8169_private *tp, const u8 *addr)
2163 {
2164         rtl_eri_write(tp, 0xe0, ERIAR_MASK_1111, get_unaligned_le32(addr));
2165         rtl_eri_write(tp, 0xe4, ERIAR_MASK_1111, get_unaligned_le16(addr + 4));
2166         rtl_eri_write(tp, 0xf0, ERIAR_MASK_1111, get_unaligned_le16(addr) << 16);
2167         rtl_eri_write(tp, 0xf4, ERIAR_MASK_1111, get_unaligned_le32(addr + 2));
2168 }
2169
2170 u16 rtl8168h_2_get_adc_bias_ioffset(struct rtl8169_private *tp)
2171 {
2172         u16 data1, data2, ioffset;
2173
2174         r8168_mac_ocp_write(tp, 0xdd02, 0x807d);
2175         data1 = r8168_mac_ocp_read(tp, 0xdd02);
2176         data2 = r8168_mac_ocp_read(tp, 0xdd00);
2177
2178         ioffset = (data2 >> 1) & 0x7ff8;
2179         ioffset |= data2 & 0x0007;
2180         if (data1 & BIT(7))
2181                 ioffset |= BIT(15);
2182
2183         return ioffset;
2184 }
2185
2186 static void rtl_schedule_task(struct rtl8169_private *tp, enum rtl_flag flag)
2187 {
2188         set_bit(flag, tp->wk.flags);
2189         schedule_work(&tp->wk.work);
2190 }
2191
2192 static void rtl8169_init_phy(struct rtl8169_private *tp)
2193 {
2194         r8169_hw_phy_config(tp, tp->phydev, tp->mac_version);
2195
2196         if (tp->mac_version <= RTL_GIGA_MAC_VER_06) {
2197                 pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
2198                 pci_write_config_byte(tp->pci_dev, PCI_CACHE_LINE_SIZE, 0x08);
2199                 /* set undocumented MAC Reg C+CR Offset 0x82h */
2200                 RTL_W8(tp, 0x82, 0x01);
2201         }
2202
2203         if (tp->mac_version == RTL_GIGA_MAC_VER_05 &&
2204             tp->pci_dev->subsystem_vendor == PCI_VENDOR_ID_GIGABYTE &&
2205             tp->pci_dev->subsystem_device == 0xe000)
2206                 phy_write_paged(tp->phydev, 0x0001, 0x10, 0xf01b);
2207
2208         /* We may have called phy_speed_down before */
2209         phy_speed_up(tp->phydev);
2210
2211         if (rtl_supports_eee(tp))
2212                 rtl_enable_eee(tp);
2213
2214         genphy_soft_reset(tp->phydev);
2215 }
2216
2217 static void rtl_rar_set(struct rtl8169_private *tp, const u8 *addr)
2218 {
2219         rtl_unlock_config_regs(tp);
2220
2221         RTL_W32(tp, MAC4, get_unaligned_le16(addr + 4));
2222         rtl_pci_commit(tp);
2223
2224         RTL_W32(tp, MAC0, get_unaligned_le32(addr));
2225         rtl_pci_commit(tp);
2226
2227         if (tp->mac_version == RTL_GIGA_MAC_VER_34)
2228                 rtl_rar_exgmac_set(tp, addr);
2229
2230         rtl_lock_config_regs(tp);
2231 }
2232
2233 static int rtl_set_mac_address(struct net_device *dev, void *p)
2234 {
2235         struct rtl8169_private *tp = netdev_priv(dev);
2236         int ret;
2237
2238         ret = eth_mac_addr(dev, p);
2239         if (ret)
2240                 return ret;
2241
2242         rtl_rar_set(tp, dev->dev_addr);
2243
2244         return 0;
2245 }
2246
2247 static void rtl_wol_enable_rx(struct rtl8169_private *tp)
2248 {
2249         if (tp->mac_version >= RTL_GIGA_MAC_VER_25)
2250                 RTL_W32(tp, RxConfig, RTL_R32(tp, RxConfig) |
2251                         AcceptBroadcast | AcceptMulticast | AcceptMyPhys);
2252 }
2253
2254 static void rtl_prepare_power_down(struct rtl8169_private *tp)
2255 {
2256         if (tp->dash_type != RTL_DASH_NONE)
2257                 return;
2258
2259         if (tp->mac_version == RTL_GIGA_MAC_VER_32 ||
2260             tp->mac_version == RTL_GIGA_MAC_VER_33)
2261                 rtl_ephy_write(tp, 0x19, 0xff64);
2262
2263         if (device_may_wakeup(tp_to_dev(tp))) {
2264                 phy_speed_down(tp->phydev, false);
2265                 rtl_wol_enable_rx(tp);
2266         }
2267 }
2268
2269 static void rtl_init_rxcfg(struct rtl8169_private *tp)
2270 {
2271         switch (tp->mac_version) {
2272         case RTL_GIGA_MAC_VER_02 ... RTL_GIGA_MAC_VER_06:
2273         case RTL_GIGA_MAC_VER_10 ... RTL_GIGA_MAC_VER_17:
2274                 RTL_W32(tp, RxConfig, RX_FIFO_THRESH | RX_DMA_BURST);
2275                 break;
2276         case RTL_GIGA_MAC_VER_18 ... RTL_GIGA_MAC_VER_24:
2277         case RTL_GIGA_MAC_VER_34 ... RTL_GIGA_MAC_VER_36:
2278         case RTL_GIGA_MAC_VER_38:
2279                 RTL_W32(tp, RxConfig, RX128_INT_EN | RX_MULTI_EN | RX_DMA_BURST);
2280                 break;
2281         case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_53:
2282                 RTL_W32(tp, RxConfig, RX128_INT_EN | RX_MULTI_EN | RX_DMA_BURST | RX_EARLY_OFF);
2283                 break;
2284         case RTL_GIGA_MAC_VER_60 ... RTL_GIGA_MAC_VER_63:
2285                 RTL_W32(tp, RxConfig, RX_FETCH_DFLT_8125 | RX_DMA_BURST);
2286                 break;
2287         default:
2288                 RTL_W32(tp, RxConfig, RX128_INT_EN | RX_DMA_BURST);
2289                 break;
2290         }
2291 }
2292
2293 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
2294 {
2295         tp->dirty_tx = tp->cur_tx = tp->cur_rx = 0;
2296 }
2297
2298 static void r8168c_hw_jumbo_enable(struct rtl8169_private *tp)
2299 {
2300         RTL_W8(tp, Config3, RTL_R8(tp, Config3) | Jumbo_En0);
2301         RTL_W8(tp, Config4, RTL_R8(tp, Config4) | Jumbo_En1);
2302 }
2303
2304 static void r8168c_hw_jumbo_disable(struct rtl8169_private *tp)
2305 {
2306         RTL_W8(tp, Config3, RTL_R8(tp, Config3) & ~Jumbo_En0);
2307         RTL_W8(tp, Config4, RTL_R8(tp, Config4) & ~Jumbo_En1);
2308 }
2309
2310 static void r8168dp_hw_jumbo_enable(struct rtl8169_private *tp)
2311 {
2312         RTL_W8(tp, Config3, RTL_R8(tp, Config3) | Jumbo_En0);
2313 }
2314
2315 static void r8168dp_hw_jumbo_disable(struct rtl8169_private *tp)
2316 {
2317         RTL_W8(tp, Config3, RTL_R8(tp, Config3) & ~Jumbo_En0);
2318 }
2319
2320 static void r8168e_hw_jumbo_enable(struct rtl8169_private *tp)
2321 {
2322         RTL_W8(tp, MaxTxPacketSize, 0x24);
2323         RTL_W8(tp, Config3, RTL_R8(tp, Config3) | Jumbo_En0);
2324         RTL_W8(tp, Config4, RTL_R8(tp, Config4) | 0x01);
2325 }
2326
2327 static void r8168e_hw_jumbo_disable(struct rtl8169_private *tp)
2328 {
2329         RTL_W8(tp, MaxTxPacketSize, 0x3f);
2330         RTL_W8(tp, Config3, RTL_R8(tp, Config3) & ~Jumbo_En0);
2331         RTL_W8(tp, Config4, RTL_R8(tp, Config4) & ~0x01);
2332 }
2333
2334 static void r8168b_1_hw_jumbo_enable(struct rtl8169_private *tp)
2335 {
2336         RTL_W8(tp, Config4, RTL_R8(tp, Config4) | (1 << 0));
2337 }
2338
2339 static void r8168b_1_hw_jumbo_disable(struct rtl8169_private *tp)
2340 {
2341         RTL_W8(tp, Config4, RTL_R8(tp, Config4) & ~(1 << 0));
2342 }
2343
2344 static void rtl_jumbo_config(struct rtl8169_private *tp)
2345 {
2346         bool jumbo = tp->dev->mtu > ETH_DATA_LEN;
2347         int readrq = 4096;
2348
2349         rtl_unlock_config_regs(tp);
2350         switch (tp->mac_version) {
2351         case RTL_GIGA_MAC_VER_12:
2352         case RTL_GIGA_MAC_VER_17:
2353                 if (jumbo) {
2354                         readrq = 512;
2355                         r8168b_1_hw_jumbo_enable(tp);
2356                 } else {
2357                         r8168b_1_hw_jumbo_disable(tp);
2358                 }
2359                 break;
2360         case RTL_GIGA_MAC_VER_18 ... RTL_GIGA_MAC_VER_26:
2361                 if (jumbo) {
2362                         readrq = 512;
2363                         r8168c_hw_jumbo_enable(tp);
2364                 } else {
2365                         r8168c_hw_jumbo_disable(tp);
2366                 }
2367                 break;
2368         case RTL_GIGA_MAC_VER_27 ... RTL_GIGA_MAC_VER_28:
2369                 if (jumbo)
2370                         r8168dp_hw_jumbo_enable(tp);
2371                 else
2372                         r8168dp_hw_jumbo_disable(tp);
2373                 break;
2374         case RTL_GIGA_MAC_VER_31 ... RTL_GIGA_MAC_VER_33:
2375                 if (jumbo)
2376                         r8168e_hw_jumbo_enable(tp);
2377                 else
2378                         r8168e_hw_jumbo_disable(tp);
2379                 break;
2380         default:
2381                 break;
2382         }
2383         rtl_lock_config_regs(tp);
2384
2385         if (pci_is_pcie(tp->pci_dev) && tp->supports_gmii)
2386                 pcie_set_readrq(tp->pci_dev, readrq);
2387
2388         /* Chip doesn't support pause in jumbo mode */
2389         if (jumbo) {
2390                 linkmode_clear_bit(ETHTOOL_LINK_MODE_Pause_BIT,
2391                                    tp->phydev->advertising);
2392                 linkmode_clear_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
2393                                    tp->phydev->advertising);
2394                 phy_start_aneg(tp->phydev);
2395         }
2396 }
2397
2398 DECLARE_RTL_COND(rtl_chipcmd_cond)
2399 {
2400         return RTL_R8(tp, ChipCmd) & CmdReset;
2401 }
2402
2403 static void rtl_hw_reset(struct rtl8169_private *tp)
2404 {
2405         RTL_W8(tp, ChipCmd, CmdReset);
2406
2407         rtl_loop_wait_low(tp, &rtl_chipcmd_cond, 100, 100);
2408 }
2409
2410 static void rtl_request_firmware(struct rtl8169_private *tp)
2411 {
2412         struct rtl_fw *rtl_fw;
2413
2414         /* firmware loaded already or no firmware available */
2415         if (tp->rtl_fw || !tp->fw_name)
2416                 return;
2417
2418         rtl_fw = kzalloc(sizeof(*rtl_fw), GFP_KERNEL);
2419         if (!rtl_fw)
2420                 return;
2421
2422         rtl_fw->phy_write = rtl_writephy;
2423         rtl_fw->phy_read = rtl_readphy;
2424         rtl_fw->mac_mcu_write = mac_mcu_write;
2425         rtl_fw->mac_mcu_read = mac_mcu_read;
2426         rtl_fw->fw_name = tp->fw_name;
2427         rtl_fw->dev = tp_to_dev(tp);
2428
2429         if (rtl_fw_request_firmware(rtl_fw))
2430                 kfree(rtl_fw);
2431         else
2432                 tp->rtl_fw = rtl_fw;
2433 }
2434
2435 static void rtl_rx_close(struct rtl8169_private *tp)
2436 {
2437         RTL_W32(tp, RxConfig, RTL_R32(tp, RxConfig) & ~RX_CONFIG_ACCEPT_MASK);
2438 }
2439
2440 DECLARE_RTL_COND(rtl_npq_cond)
2441 {
2442         return RTL_R8(tp, TxPoll) & NPQ;
2443 }
2444
2445 DECLARE_RTL_COND(rtl_txcfg_empty_cond)
2446 {
2447         return RTL_R32(tp, TxConfig) & TXCFG_EMPTY;
2448 }
2449
2450 DECLARE_RTL_COND(rtl_rxtx_empty_cond)
2451 {
2452         return (RTL_R8(tp, MCU) & RXTX_EMPTY) == RXTX_EMPTY;
2453 }
2454
2455 DECLARE_RTL_COND(rtl_rxtx_empty_cond_2)
2456 {
2457         /* IntrMitigate has new functionality on RTL8125 */
2458         return (RTL_R16(tp, IntrMitigate) & 0x0103) == 0x0103;
2459 }
2460
2461 static void rtl_wait_txrx_fifo_empty(struct rtl8169_private *tp)
2462 {
2463         switch (tp->mac_version) {
2464         case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_53:
2465                 rtl_loop_wait_high(tp, &rtl_txcfg_empty_cond, 100, 42);
2466                 rtl_loop_wait_high(tp, &rtl_rxtx_empty_cond, 100, 42);
2467                 break;
2468         case RTL_GIGA_MAC_VER_60 ... RTL_GIGA_MAC_VER_61:
2469                 rtl_loop_wait_high(tp, &rtl_rxtx_empty_cond, 100, 42);
2470                 break;
2471         case RTL_GIGA_MAC_VER_63:
2472                 RTL_W8(tp, ChipCmd, RTL_R8(tp, ChipCmd) | StopReq);
2473                 rtl_loop_wait_high(tp, &rtl_rxtx_empty_cond, 100, 42);
2474                 rtl_loop_wait_high(tp, &rtl_rxtx_empty_cond_2, 100, 42);
2475                 break;
2476         default:
2477                 break;
2478         }
2479 }
2480
2481 static void rtl_enable_rxdvgate(struct rtl8169_private *tp)
2482 {
2483         RTL_W32(tp, MISC, RTL_R32(tp, MISC) | RXDV_GATED_EN);
2484         fsleep(2000);
2485         rtl_wait_txrx_fifo_empty(tp);
2486 }
2487
2488 static void rtl_set_tx_config_registers(struct rtl8169_private *tp)
2489 {
2490         u32 val = TX_DMA_BURST << TxDMAShift |
2491                   InterFrameGap << TxInterFrameGapShift;
2492
2493         if (rtl_is_8168evl_up(tp))
2494                 val |= TXCFG_AUTO_FIFO;
2495
2496         RTL_W32(tp, TxConfig, val);
2497 }
2498
2499 static void rtl_set_rx_max_size(struct rtl8169_private *tp)
2500 {
2501         /* Low hurts. Let's disable the filtering. */
2502         RTL_W16(tp, RxMaxSize, R8169_RX_BUF_SIZE + 1);
2503 }
2504
2505 static void rtl_set_rx_tx_desc_registers(struct rtl8169_private *tp)
2506 {
2507         /*
2508          * Magic spell: some iop3xx ARM board needs the TxDescAddrHigh
2509          * register to be written before TxDescAddrLow to work.
2510          * Switching from MMIO to I/O access fixes the issue as well.
2511          */
2512         RTL_W32(tp, TxDescStartAddrHigh, ((u64) tp->TxPhyAddr) >> 32);
2513         RTL_W32(tp, TxDescStartAddrLow, ((u64) tp->TxPhyAddr) & DMA_BIT_MASK(32));
2514         RTL_W32(tp, RxDescAddrHigh, ((u64) tp->RxPhyAddr) >> 32);
2515         RTL_W32(tp, RxDescAddrLow, ((u64) tp->RxPhyAddr) & DMA_BIT_MASK(32));
2516 }
2517
2518 static void rtl8169_set_magic_reg(struct rtl8169_private *tp)
2519 {
2520         u32 val;
2521
2522         if (tp->mac_version == RTL_GIGA_MAC_VER_05)
2523                 val = 0x000fff00;
2524         else if (tp->mac_version == RTL_GIGA_MAC_VER_06)
2525                 val = 0x00ffff00;
2526         else
2527                 return;
2528
2529         if (RTL_R8(tp, Config2) & PCI_Clock_66MHz)
2530                 val |= 0xff;
2531
2532         RTL_W32(tp, 0x7c, val);
2533 }
2534
2535 static void rtl_set_rx_mode(struct net_device *dev)
2536 {
2537         u32 rx_mode = AcceptBroadcast | AcceptMyPhys | AcceptMulticast;
2538         /* Multicast hash filter */
2539         u32 mc_filter[2] = { 0xffffffff, 0xffffffff };
2540         struct rtl8169_private *tp = netdev_priv(dev);
2541         u32 tmp;
2542
2543         if (dev->flags & IFF_PROMISC) {
2544                 rx_mode |= AcceptAllPhys;
2545         } else if (netdev_mc_count(dev) > MC_FILTER_LIMIT ||
2546                    dev->flags & IFF_ALLMULTI ||
2547                    tp->mac_version == RTL_GIGA_MAC_VER_35) {
2548                 /* accept all multicasts */
2549         } else if (netdev_mc_empty(dev)) {
2550                 rx_mode &= ~AcceptMulticast;
2551         } else {
2552                 struct netdev_hw_addr *ha;
2553
2554                 mc_filter[1] = mc_filter[0] = 0;
2555                 netdev_for_each_mc_addr(ha, dev) {
2556                         u32 bit_nr = eth_hw_addr_crc(ha) >> 26;
2557                         mc_filter[bit_nr >> 5] |= BIT(bit_nr & 31);
2558                 }
2559
2560                 if (tp->mac_version > RTL_GIGA_MAC_VER_06) {
2561                         tmp = mc_filter[0];
2562                         mc_filter[0] = swab32(mc_filter[1]);
2563                         mc_filter[1] = swab32(tmp);
2564                 }
2565         }
2566
2567         RTL_W32(tp, MAR0 + 4, mc_filter[1]);
2568         RTL_W32(tp, MAR0 + 0, mc_filter[0]);
2569
2570         tmp = RTL_R32(tp, RxConfig);
2571         RTL_W32(tp, RxConfig, (tmp & ~RX_CONFIG_ACCEPT_OK_MASK) | rx_mode);
2572 }
2573
2574 DECLARE_RTL_COND(rtl_csiar_cond)
2575 {
2576         return RTL_R32(tp, CSIAR) & CSIAR_FLAG;
2577 }
2578
2579 static void rtl_csi_write(struct rtl8169_private *tp, int addr, int value)
2580 {
2581         u32 func = PCI_FUNC(tp->pci_dev->devfn);
2582
2583         RTL_W32(tp, CSIDR, value);
2584         RTL_W32(tp, CSIAR, CSIAR_WRITE_CMD | (addr & CSIAR_ADDR_MASK) |
2585                 CSIAR_BYTE_ENABLE | func << 16);
2586
2587         rtl_loop_wait_low(tp, &rtl_csiar_cond, 10, 100);
2588 }
2589
2590 static u32 rtl_csi_read(struct rtl8169_private *tp, int addr)
2591 {
2592         u32 func = PCI_FUNC(tp->pci_dev->devfn);
2593
2594         RTL_W32(tp, CSIAR, (addr & CSIAR_ADDR_MASK) | func << 16 |
2595                 CSIAR_BYTE_ENABLE);
2596
2597         return rtl_loop_wait_high(tp, &rtl_csiar_cond, 10, 100) ?
2598                 RTL_R32(tp, CSIDR) : ~0;
2599 }
2600
2601 static void rtl_set_aspm_entry_latency(struct rtl8169_private *tp, u8 val)
2602 {
2603         struct pci_dev *pdev = tp->pci_dev;
2604         u32 csi;
2605
2606         /* According to Realtek the value at config space address 0x070f
2607          * controls the L0s/L1 entrance latency. We try standard ECAM access
2608          * first and if it fails fall back to CSI.
2609          * bit 0..2: L0: 0 = 1us, 1 = 2us .. 6 = 7us, 7 = 7us (no typo)
2610          * bit 3..5: L1: 0 = 1us, 1 = 2us .. 6 = 64us, 7 = 64us
2611          */
2612         if (pdev->cfg_size > 0x070f &&
2613             pci_write_config_byte(pdev, 0x070f, val) == PCIBIOS_SUCCESSFUL)
2614                 return;
2615
2616         netdev_notice_once(tp->dev,
2617                 "No native access to PCI extended config space, falling back to CSI\n");
2618         csi = rtl_csi_read(tp, 0x070c) & 0x00ffffff;
2619         rtl_csi_write(tp, 0x070c, csi | val << 24);
2620 }
2621
2622 static void rtl_set_def_aspm_entry_latency(struct rtl8169_private *tp)
2623 {
2624         /* L0 7us, L1 16us */
2625         rtl_set_aspm_entry_latency(tp, 0x27);
2626 }
2627
2628 struct ephy_info {
2629         unsigned int offset;
2630         u16 mask;
2631         u16 bits;
2632 };
2633
2634 static void __rtl_ephy_init(struct rtl8169_private *tp,
2635                             const struct ephy_info *e, int len)
2636 {
2637         u16 w;
2638
2639         while (len-- > 0) {
2640                 w = (rtl_ephy_read(tp, e->offset) & ~e->mask) | e->bits;
2641                 rtl_ephy_write(tp, e->offset, w);
2642                 e++;
2643         }
2644 }
2645
2646 #define rtl_ephy_init(tp, a) __rtl_ephy_init(tp, a, ARRAY_SIZE(a))
2647
2648 static void rtl_disable_clock_request(struct rtl8169_private *tp)
2649 {
2650         pcie_capability_clear_word(tp->pci_dev, PCI_EXP_LNKCTL,
2651                                    PCI_EXP_LNKCTL_CLKREQ_EN);
2652 }
2653
2654 static void rtl_enable_clock_request(struct rtl8169_private *tp)
2655 {
2656         pcie_capability_set_word(tp->pci_dev, PCI_EXP_LNKCTL,
2657                                  PCI_EXP_LNKCTL_CLKREQ_EN);
2658 }
2659
2660 static void rtl_pcie_state_l2l3_disable(struct rtl8169_private *tp)
2661 {
2662         /* work around an issue when PCI reset occurs during L2/L3 state */
2663         RTL_W8(tp, Config3, RTL_R8(tp, Config3) & ~Rdy_to_L23);
2664 }
2665
2666 static void rtl_hw_aspm_clkreq_enable(struct rtl8169_private *tp, bool enable)
2667 {
2668         /* Don't enable ASPM in the chip if OS can't control ASPM */
2669         if (enable && tp->aspm_manageable) {
2670                 RTL_W8(tp, Config5, RTL_R8(tp, Config5) | ASPM_en);
2671                 RTL_W8(tp, Config2, RTL_R8(tp, Config2) | ClkReqEn);
2672         } else {
2673                 RTL_W8(tp, Config2, RTL_R8(tp, Config2) & ~ClkReqEn);
2674                 RTL_W8(tp, Config5, RTL_R8(tp, Config5) & ~ASPM_en);
2675         }
2676
2677         udelay(10);
2678 }
2679
2680 static void rtl_set_fifo_size(struct rtl8169_private *tp, u16 rx_stat,
2681                               u16 tx_stat, u16 rx_dyn, u16 tx_dyn)
2682 {
2683         /* Usage of dynamic vs. static FIFO is controlled by bit
2684          * TXCFG_AUTO_FIFO. Exact meaning of FIFO values isn't known.
2685          */
2686         rtl_eri_write(tp, 0xc8, ERIAR_MASK_1111, (rx_stat << 16) | rx_dyn);
2687         rtl_eri_write(tp, 0xe8, ERIAR_MASK_1111, (tx_stat << 16) | tx_dyn);
2688 }
2689
2690 static void rtl8168g_set_pause_thresholds(struct rtl8169_private *tp,
2691                                           u8 low, u8 high)
2692 {
2693         /* FIFO thresholds for pause flow control */
2694         rtl_eri_write(tp, 0xcc, ERIAR_MASK_0001, low);
2695         rtl_eri_write(tp, 0xd0, ERIAR_MASK_0001, high);
2696 }
2697
2698 static void rtl_hw_start_8168b(struct rtl8169_private *tp)
2699 {
2700         RTL_W8(tp, Config3, RTL_R8(tp, Config3) & ~Beacon_en);
2701 }
2702
2703 static void __rtl_hw_start_8168cp(struct rtl8169_private *tp)
2704 {
2705         RTL_W8(tp, Config1, RTL_R8(tp, Config1) | Speed_down);
2706
2707         RTL_W8(tp, Config3, RTL_R8(tp, Config3) & ~Beacon_en);
2708
2709         rtl_disable_clock_request(tp);
2710 }
2711
2712 static void rtl_hw_start_8168cp_1(struct rtl8169_private *tp)
2713 {
2714         static const struct ephy_info e_info_8168cp[] = {
2715                 { 0x01, 0,      0x0001 },
2716                 { 0x02, 0x0800, 0x1000 },
2717                 { 0x03, 0,      0x0042 },
2718                 { 0x06, 0x0080, 0x0000 },
2719                 { 0x07, 0,      0x2000 }
2720         };
2721
2722         rtl_set_def_aspm_entry_latency(tp);
2723
2724         rtl_ephy_init(tp, e_info_8168cp);
2725
2726         __rtl_hw_start_8168cp(tp);
2727 }
2728
2729 static void rtl_hw_start_8168cp_2(struct rtl8169_private *tp)
2730 {
2731         rtl_set_def_aspm_entry_latency(tp);
2732
2733         RTL_W8(tp, Config3, RTL_R8(tp, Config3) & ~Beacon_en);
2734 }
2735
2736 static void rtl_hw_start_8168cp_3(struct rtl8169_private *tp)
2737 {
2738         rtl_set_def_aspm_entry_latency(tp);
2739
2740         RTL_W8(tp, Config3, RTL_R8(tp, Config3) & ~Beacon_en);
2741
2742         /* Magic. */
2743         RTL_W8(tp, DBG_REG, 0x20);
2744 }
2745
2746 static void rtl_hw_start_8168c_1(struct rtl8169_private *tp)
2747 {
2748         static const struct ephy_info e_info_8168c_1[] = {
2749                 { 0x02, 0x0800, 0x1000 },
2750                 { 0x03, 0,      0x0002 },
2751                 { 0x06, 0x0080, 0x0000 }
2752         };
2753
2754         rtl_set_def_aspm_entry_latency(tp);
2755
2756         RTL_W8(tp, DBG_REG, 0x06 | FIX_NAK_1 | FIX_NAK_2);
2757
2758         rtl_ephy_init(tp, e_info_8168c_1);
2759
2760         __rtl_hw_start_8168cp(tp);
2761 }
2762
2763 static void rtl_hw_start_8168c_2(struct rtl8169_private *tp)
2764 {
2765         static const struct ephy_info e_info_8168c_2[] = {
2766                 { 0x01, 0,      0x0001 },
2767                 { 0x03, 0x0400, 0x0020 }
2768         };
2769
2770         rtl_set_def_aspm_entry_latency(tp);
2771
2772         rtl_ephy_init(tp, e_info_8168c_2);
2773
2774         __rtl_hw_start_8168cp(tp);
2775 }
2776
2777 static void rtl_hw_start_8168c_4(struct rtl8169_private *tp)
2778 {
2779         rtl_set_def_aspm_entry_latency(tp);
2780
2781         __rtl_hw_start_8168cp(tp);
2782 }
2783
2784 static void rtl_hw_start_8168d(struct rtl8169_private *tp)
2785 {
2786         rtl_set_def_aspm_entry_latency(tp);
2787
2788         rtl_disable_clock_request(tp);
2789 }
2790
2791 static void rtl_hw_start_8168d_4(struct rtl8169_private *tp)
2792 {
2793         static const struct ephy_info e_info_8168d_4[] = {
2794                 { 0x0b, 0x0000, 0x0048 },
2795                 { 0x19, 0x0020, 0x0050 },
2796                 { 0x0c, 0x0100, 0x0020 },
2797                 { 0x10, 0x0004, 0x0000 },
2798         };
2799
2800         rtl_set_def_aspm_entry_latency(tp);
2801
2802         rtl_ephy_init(tp, e_info_8168d_4);
2803
2804         rtl_enable_clock_request(tp);
2805 }
2806
2807 static void rtl_hw_start_8168e_1(struct rtl8169_private *tp)
2808 {
2809         static const struct ephy_info e_info_8168e_1[] = {
2810                 { 0x00, 0x0200, 0x0100 },
2811                 { 0x00, 0x0000, 0x0004 },
2812                 { 0x06, 0x0002, 0x0001 },
2813                 { 0x06, 0x0000, 0x0030 },
2814                 { 0x07, 0x0000, 0x2000 },
2815                 { 0x00, 0x0000, 0x0020 },
2816                 { 0x03, 0x5800, 0x2000 },
2817                 { 0x03, 0x0000, 0x0001 },
2818                 { 0x01, 0x0800, 0x1000 },
2819                 { 0x07, 0x0000, 0x4000 },
2820                 { 0x1e, 0x0000, 0x2000 },
2821                 { 0x19, 0xffff, 0xfe6c },
2822                 { 0x0a, 0x0000, 0x0040 }
2823         };
2824
2825         rtl_set_def_aspm_entry_latency(tp);
2826
2827         rtl_ephy_init(tp, e_info_8168e_1);
2828
2829         rtl_disable_clock_request(tp);
2830
2831         /* Reset tx FIFO pointer */
2832         RTL_W32(tp, MISC, RTL_R32(tp, MISC) | TXPLA_RST);
2833         RTL_W32(tp, MISC, RTL_R32(tp, MISC) & ~TXPLA_RST);
2834
2835         RTL_W8(tp, Config5, RTL_R8(tp, Config5) & ~Spi_en);
2836 }
2837
2838 static void rtl_hw_start_8168e_2(struct rtl8169_private *tp)
2839 {
2840         static const struct ephy_info e_info_8168e_2[] = {
2841                 { 0x09, 0x0000, 0x0080 },
2842                 { 0x19, 0x0000, 0x0224 },
2843                 { 0x00, 0x0000, 0x0004 },
2844                 { 0x0c, 0x3df0, 0x0200 },
2845         };
2846
2847         rtl_set_def_aspm_entry_latency(tp);
2848
2849         rtl_ephy_init(tp, e_info_8168e_2);
2850
2851         rtl_eri_write(tp, 0xc0, ERIAR_MASK_0011, 0x0000);
2852         rtl_eri_write(tp, 0xb8, ERIAR_MASK_1111, 0x0000);
2853         rtl_set_fifo_size(tp, 0x10, 0x10, 0x02, 0x06);
2854         rtl_eri_set_bits(tp, 0x0d4, 0x1f00);
2855         rtl_eri_set_bits(tp, 0x1d0, BIT(1));
2856         rtl_reset_packet_filter(tp);
2857         rtl_eri_set_bits(tp, 0x1b0, BIT(4));
2858         rtl_eri_write(tp, 0xcc, ERIAR_MASK_1111, 0x00000050);
2859         rtl_eri_write(tp, 0xd0, ERIAR_MASK_1111, 0x07ff0060);
2860
2861         rtl_disable_clock_request(tp);
2862
2863         RTL_W8(tp, MCU, RTL_R8(tp, MCU) & ~NOW_IS_OOB);
2864
2865         rtl8168_config_eee_mac(tp);
2866
2867         RTL_W8(tp, DLLPR, RTL_R8(tp, DLLPR) | PFM_EN);
2868         RTL_W32(tp, MISC, RTL_R32(tp, MISC) | PWM_EN);
2869         RTL_W8(tp, Config5, RTL_R8(tp, Config5) & ~Spi_en);
2870
2871         rtl_hw_aspm_clkreq_enable(tp, true);
2872 }
2873
2874 static void rtl_hw_start_8168f(struct rtl8169_private *tp)
2875 {
2876         rtl_set_def_aspm_entry_latency(tp);
2877
2878         rtl_eri_write(tp, 0xc0, ERIAR_MASK_0011, 0x0000);
2879         rtl_eri_write(tp, 0xb8, ERIAR_MASK_1111, 0x0000);
2880         rtl_set_fifo_size(tp, 0x10, 0x10, 0x02, 0x06);
2881         rtl_reset_packet_filter(tp);
2882         rtl_eri_set_bits(tp, 0x1b0, BIT(4));
2883         rtl_eri_set_bits(tp, 0x1d0, BIT(4) | BIT(1));
2884         rtl_eri_write(tp, 0xcc, ERIAR_MASK_1111, 0x00000050);
2885         rtl_eri_write(tp, 0xd0, ERIAR_MASK_1111, 0x00000060);
2886
2887         rtl_disable_clock_request(tp);
2888
2889         RTL_W8(tp, MCU, RTL_R8(tp, MCU) & ~NOW_IS_OOB);
2890         RTL_W8(tp, DLLPR, RTL_R8(tp, DLLPR) | PFM_EN);
2891         RTL_W32(tp, MISC, RTL_R32(tp, MISC) | PWM_EN);
2892         RTL_W8(tp, Config5, RTL_R8(tp, Config5) & ~Spi_en);
2893
2894         rtl8168_config_eee_mac(tp);
2895 }
2896
2897 static void rtl_hw_start_8168f_1(struct rtl8169_private *tp)
2898 {
2899         static const struct ephy_info e_info_8168f_1[] = {
2900                 { 0x06, 0x00c0, 0x0020 },
2901                 { 0x08, 0x0001, 0x0002 },
2902                 { 0x09, 0x0000, 0x0080 },
2903                 { 0x19, 0x0000, 0x0224 },
2904                 { 0x00, 0x0000, 0x0008 },
2905                 { 0x0c, 0x3df0, 0x0200 },
2906         };
2907
2908         rtl_hw_start_8168f(tp);
2909
2910         rtl_ephy_init(tp, e_info_8168f_1);
2911
2912         rtl_eri_set_bits(tp, 0x0d4, 0x1f00);
2913 }
2914
2915 static void rtl_hw_start_8411(struct rtl8169_private *tp)
2916 {
2917         static const struct ephy_info e_info_8168f_1[] = {
2918                 { 0x06, 0x00c0, 0x0020 },
2919                 { 0x0f, 0xffff, 0x5200 },
2920                 { 0x19, 0x0000, 0x0224 },
2921                 { 0x00, 0x0000, 0x0008 },
2922                 { 0x0c, 0x3df0, 0x0200 },
2923         };
2924
2925         rtl_hw_start_8168f(tp);
2926         rtl_pcie_state_l2l3_disable(tp);
2927
2928         rtl_ephy_init(tp, e_info_8168f_1);
2929
2930         rtl_eri_set_bits(tp, 0x0d4, 0x0c00);
2931 }
2932
2933 static void rtl_hw_start_8168g(struct rtl8169_private *tp)
2934 {
2935         rtl_set_fifo_size(tp, 0x08, 0x10, 0x02, 0x06);
2936         rtl8168g_set_pause_thresholds(tp, 0x38, 0x48);
2937
2938         rtl_set_def_aspm_entry_latency(tp);
2939
2940         rtl_reset_packet_filter(tp);
2941         rtl_eri_write(tp, 0x2f8, ERIAR_MASK_0011, 0x1d8f);
2942
2943         RTL_W32(tp, MISC, RTL_R32(tp, MISC) & ~RXDV_GATED_EN);
2944
2945         rtl_eri_write(tp, 0xc0, ERIAR_MASK_0011, 0x0000);
2946         rtl_eri_write(tp, 0xb8, ERIAR_MASK_0011, 0x0000);
2947         rtl_eri_set_bits(tp, 0x0d4, 0x1f80);
2948
2949         rtl8168_config_eee_mac(tp);
2950
2951         rtl_w0w1_eri(tp, 0x2fc, 0x01, 0x06);
2952         rtl_eri_clear_bits(tp, 0x1b0, BIT(12));
2953
2954         rtl_pcie_state_l2l3_disable(tp);
2955 }
2956
2957 static void rtl_hw_start_8168g_1(struct rtl8169_private *tp)
2958 {
2959         static const struct ephy_info e_info_8168g_1[] = {
2960                 { 0x00, 0x0008, 0x0000 },
2961                 { 0x0c, 0x3ff0, 0x0820 },
2962                 { 0x1e, 0x0000, 0x0001 },
2963                 { 0x19, 0x8000, 0x0000 }
2964         };
2965
2966         rtl_hw_start_8168g(tp);
2967
2968         /* disable aspm and clock request before access ephy */
2969         rtl_hw_aspm_clkreq_enable(tp, false);
2970         rtl_ephy_init(tp, e_info_8168g_1);
2971         rtl_hw_aspm_clkreq_enable(tp, true);
2972 }
2973
2974 static void rtl_hw_start_8168g_2(struct rtl8169_private *tp)
2975 {
2976         static const struct ephy_info e_info_8168g_2[] = {
2977                 { 0x00, 0x0008, 0x0000 },
2978                 { 0x0c, 0x3ff0, 0x0820 },
2979                 { 0x19, 0xffff, 0x7c00 },
2980                 { 0x1e, 0xffff, 0x20eb },
2981                 { 0x0d, 0xffff, 0x1666 },
2982                 { 0x00, 0xffff, 0x10a3 },
2983                 { 0x06, 0xffff, 0xf050 },
2984                 { 0x04, 0x0000, 0x0010 },
2985                 { 0x1d, 0x4000, 0x0000 },
2986         };
2987
2988         rtl_hw_start_8168g(tp);
2989
2990         /* disable aspm and clock request before access ephy */
2991         rtl_hw_aspm_clkreq_enable(tp, false);
2992         rtl_ephy_init(tp, e_info_8168g_2);
2993 }
2994
2995 static void rtl_hw_start_8411_2(struct rtl8169_private *tp)
2996 {
2997         static const struct ephy_info e_info_8411_2[] = {
2998                 { 0x00, 0x0008, 0x0000 },
2999                 { 0x0c, 0x37d0, 0x0820 },
3000                 { 0x1e, 0x0000, 0x0001 },
3001                 { 0x19, 0x8021, 0x0000 },
3002                 { 0x1e, 0x0000, 0x2000 },
3003                 { 0x0d, 0x0100, 0x0200 },
3004                 { 0x00, 0x0000, 0x0080 },
3005                 { 0x06, 0x0000, 0x0010 },
3006                 { 0x04, 0x0000, 0x0010 },
3007                 { 0x1d, 0x0000, 0x4000 },
3008         };
3009
3010         rtl_hw_start_8168g(tp);
3011
3012         /* disable aspm and clock request before access ephy */
3013         rtl_hw_aspm_clkreq_enable(tp, false);
3014         rtl_ephy_init(tp, e_info_8411_2);
3015
3016         /* The following Realtek-provided magic fixes an issue with the RX unit
3017          * getting confused after the PHY having been powered-down.
3018          */
3019         r8168_mac_ocp_write(tp, 0xFC28, 0x0000);
3020         r8168_mac_ocp_write(tp, 0xFC2A, 0x0000);
3021         r8168_mac_ocp_write(tp, 0xFC2C, 0x0000);
3022         r8168_mac_ocp_write(tp, 0xFC2E, 0x0000);
3023         r8168_mac_ocp_write(tp, 0xFC30, 0x0000);
3024         r8168_mac_ocp_write(tp, 0xFC32, 0x0000);
3025         r8168_mac_ocp_write(tp, 0xFC34, 0x0000);
3026         r8168_mac_ocp_write(tp, 0xFC36, 0x0000);
3027         mdelay(3);
3028         r8168_mac_ocp_write(tp, 0xFC26, 0x0000);
3029
3030         r8168_mac_ocp_write(tp, 0xF800, 0xE008);
3031         r8168_mac_ocp_write(tp, 0xF802, 0xE00A);
3032         r8168_mac_ocp_write(tp, 0xF804, 0xE00C);
3033         r8168_mac_ocp_write(tp, 0xF806, 0xE00E);
3034         r8168_mac_ocp_write(tp, 0xF808, 0xE027);
3035         r8168_mac_ocp_write(tp, 0xF80A, 0xE04F);
3036         r8168_mac_ocp_write(tp, 0xF80C, 0xE05E);
3037         r8168_mac_ocp_write(tp, 0xF80E, 0xE065);
3038         r8168_mac_ocp_write(tp, 0xF810, 0xC602);
3039         r8168_mac_ocp_write(tp, 0xF812, 0xBE00);
3040         r8168_mac_ocp_write(tp, 0xF814, 0x0000);
3041         r8168_mac_ocp_write(tp, 0xF816, 0xC502);
3042         r8168_mac_ocp_write(tp, 0xF818, 0xBD00);
3043         r8168_mac_ocp_write(tp, 0xF81A, 0x074C);
3044         r8168_mac_ocp_write(tp, 0xF81C, 0xC302);
3045         r8168_mac_ocp_write(tp, 0xF81E, 0xBB00);
3046         r8168_mac_ocp_write(tp, 0xF820, 0x080A);
3047         r8168_mac_ocp_write(tp, 0xF822, 0x6420);
3048         r8168_mac_ocp_write(tp, 0xF824, 0x48C2);
3049         r8168_mac_ocp_write(tp, 0xF826, 0x8C20);
3050         r8168_mac_ocp_write(tp, 0xF828, 0xC516);
3051         r8168_mac_ocp_write(tp, 0xF82A, 0x64A4);
3052         r8168_mac_ocp_write(tp, 0xF82C, 0x49C0);
3053         r8168_mac_ocp_write(tp, 0xF82E, 0xF009);
3054         r8168_mac_ocp_write(tp, 0xF830, 0x74A2);
3055         r8168_mac_ocp_write(tp, 0xF832, 0x8CA5);
3056         r8168_mac_ocp_write(tp, 0xF834, 0x74A0);
3057         r8168_mac_ocp_write(tp, 0xF836, 0xC50E);
3058         r8168_mac_ocp_write(tp, 0xF838, 0x9CA2);
3059         r8168_mac_ocp_write(tp, 0xF83A, 0x1C11);
3060         r8168_mac_ocp_write(tp, 0xF83C, 0x9CA0);
3061         r8168_mac_ocp_write(tp, 0xF83E, 0xE006);
3062         r8168_mac_ocp_write(tp, 0xF840, 0x74F8);
3063         r8168_mac_ocp_write(tp, 0xF842, 0x48C4);
3064         r8168_mac_ocp_write(tp, 0xF844, 0x8CF8);
3065         r8168_mac_ocp_write(tp, 0xF846, 0xC404);
3066         r8168_mac_ocp_write(tp, 0xF848, 0xBC00);
3067         r8168_mac_ocp_write(tp, 0xF84A, 0xC403);
3068         r8168_mac_ocp_write(tp, 0xF84C, 0xBC00);
3069         r8168_mac_ocp_write(tp, 0xF84E, 0x0BF2);
3070         r8168_mac_ocp_write(tp, 0xF850, 0x0C0A);
3071         r8168_mac_ocp_write(tp, 0xF852, 0xE434);
3072         r8168_mac_ocp_write(tp, 0xF854, 0xD3C0);
3073         r8168_mac_ocp_write(tp, 0xF856, 0x49D9);
3074         r8168_mac_ocp_write(tp, 0xF858, 0xF01F);
3075         r8168_mac_ocp_write(tp, 0xF85A, 0xC526);
3076         r8168_mac_ocp_write(tp, 0xF85C, 0x64A5);
3077         r8168_mac_ocp_write(tp, 0xF85E, 0x1400);
3078         r8168_mac_ocp_write(tp, 0xF860, 0xF007);
3079         r8168_mac_ocp_write(tp, 0xF862, 0x0C01);
3080         r8168_mac_ocp_write(tp, 0xF864, 0x8CA5);
3081         r8168_mac_ocp_write(tp, 0xF866, 0x1C15);
3082         r8168_mac_ocp_write(tp, 0xF868, 0xC51B);
3083         r8168_mac_ocp_write(tp, 0xF86A, 0x9CA0);
3084         r8168_mac_ocp_write(tp, 0xF86C, 0xE013);
3085         r8168_mac_ocp_write(tp, 0xF86E, 0xC519);
3086         r8168_mac_ocp_write(tp, 0xF870, 0x74A0);
3087         r8168_mac_ocp_write(tp, 0xF872, 0x48C4);
3088         r8168_mac_ocp_write(tp, 0xF874, 0x8CA0);
3089         r8168_mac_ocp_write(tp, 0xF876, 0xC516);
3090         r8168_mac_ocp_write(tp, 0xF878, 0x74A4);
3091         r8168_mac_ocp_write(tp, 0xF87A, 0x48C8);
3092         r8168_mac_ocp_write(tp, 0xF87C, 0x48CA);
3093         r8168_mac_ocp_write(tp, 0xF87E, 0x9CA4);
3094         r8168_mac_ocp_write(tp, 0xF880, 0xC512);
3095         r8168_mac_ocp_write(tp, 0xF882, 0x1B00);
3096         r8168_mac_ocp_write(tp, 0xF884, 0x9BA0);
3097         r8168_mac_ocp_write(tp, 0xF886, 0x1B1C);
3098         r8168_mac_ocp_write(tp, 0xF888, 0x483F);
3099         r8168_mac_ocp_write(tp, 0xF88A, 0x9BA2);
3100         r8168_mac_ocp_write(tp, 0xF88C, 0x1B04);
3101         r8168_mac_ocp_write(tp, 0xF88E, 0xC508);
3102         r8168_mac_ocp_write(tp, 0xF890, 0x9BA0);
3103         r8168_mac_ocp_write(tp, 0xF892, 0xC505);
3104         r8168_mac_ocp_write(tp, 0xF894, 0xBD00);
3105         r8168_mac_ocp_write(tp, 0xF896, 0xC502);
3106         r8168_mac_ocp_write(tp, 0xF898, 0xBD00);
3107         r8168_mac_ocp_write(tp, 0xF89A, 0x0300);
3108         r8168_mac_ocp_write(tp, 0xF89C, 0x051E);
3109         r8168_mac_ocp_write(tp, 0xF89E, 0xE434);
3110         r8168_mac_ocp_write(tp, 0xF8A0, 0xE018);
3111         r8168_mac_ocp_write(tp, 0xF8A2, 0xE092);
3112         r8168_mac_ocp_write(tp, 0xF8A4, 0xDE20);
3113         r8168_mac_ocp_write(tp, 0xF8A6, 0xD3C0);
3114         r8168_mac_ocp_write(tp, 0xF8A8, 0xC50F);
3115         r8168_mac_ocp_write(tp, 0xF8AA, 0x76A4);
3116         r8168_mac_ocp_write(tp, 0xF8AC, 0x49E3);
3117         r8168_mac_ocp_write(tp, 0xF8AE, 0xF007);
3118         r8168_mac_ocp_write(tp, 0xF8B0, 0x49C0);
3119         r8168_mac_ocp_write(tp, 0xF8B2, 0xF103);
3120         r8168_mac_ocp_write(tp, 0xF8B4, 0xC607);
3121         r8168_mac_ocp_write(tp, 0xF8B6, 0xBE00);
3122         r8168_mac_ocp_write(tp, 0xF8B8, 0xC606);
3123         r8168_mac_ocp_write(tp, 0xF8BA, 0xBE00);
3124         r8168_mac_ocp_write(tp, 0xF8BC, 0xC602);
3125         r8168_mac_ocp_write(tp, 0xF8BE, 0xBE00);
3126         r8168_mac_ocp_write(tp, 0xF8C0, 0x0C4C);
3127         r8168_mac_ocp_write(tp, 0xF8C2, 0x0C28);
3128         r8168_mac_ocp_write(tp, 0xF8C4, 0x0C2C);
3129         r8168_mac_ocp_write(tp, 0xF8C6, 0xDC00);
3130         r8168_mac_ocp_write(tp, 0xF8C8, 0xC707);
3131         r8168_mac_ocp_write(tp, 0xF8CA, 0x1D00);
3132         r8168_mac_ocp_write(tp, 0xF8CC, 0x8DE2);
3133         r8168_mac_ocp_write(tp, 0xF8CE, 0x48C1);
3134         r8168_mac_ocp_write(tp, 0xF8D0, 0xC502);
3135         r8168_mac_ocp_write(tp, 0xF8D2, 0xBD00);
3136         r8168_mac_ocp_write(tp, 0xF8D4, 0x00AA);
3137         r8168_mac_ocp_write(tp, 0xF8D6, 0xE0C0);
3138         r8168_mac_ocp_write(tp, 0xF8D8, 0xC502);
3139         r8168_mac_ocp_write(tp, 0xF8DA, 0xBD00);
3140         r8168_mac_ocp_write(tp, 0xF8DC, 0x0132);
3141
3142         r8168_mac_ocp_write(tp, 0xFC26, 0x8000);
3143
3144         r8168_mac_ocp_write(tp, 0xFC2A, 0x0743);
3145         r8168_mac_ocp_write(tp, 0xFC2C, 0x0801);
3146         r8168_mac_ocp_write(tp, 0xFC2E, 0x0BE9);
3147         r8168_mac_ocp_write(tp, 0xFC30, 0x02FD);
3148         r8168_mac_ocp_write(tp, 0xFC32, 0x0C25);
3149         r8168_mac_ocp_write(tp, 0xFC34, 0x00A9);
3150         r8168_mac_ocp_write(tp, 0xFC36, 0x012D);
3151
3152         rtl_hw_aspm_clkreq_enable(tp, true);
3153 }
3154
3155 static void rtl_hw_start_8168h_1(struct rtl8169_private *tp)
3156 {
3157         static const struct ephy_info e_info_8168h_1[] = {
3158                 { 0x1e, 0x0800, 0x0001 },
3159                 { 0x1d, 0x0000, 0x0800 },
3160                 { 0x05, 0xffff, 0x2089 },
3161                 { 0x06, 0xffff, 0x5881 },
3162                 { 0x04, 0xffff, 0x854a },
3163                 { 0x01, 0xffff, 0x068b }
3164         };
3165         int rg_saw_cnt;
3166
3167         /* disable aspm and clock request before access ephy */
3168         rtl_hw_aspm_clkreq_enable(tp, false);
3169         rtl_ephy_init(tp, e_info_8168h_1);
3170
3171         rtl_set_fifo_size(tp, 0x08, 0x10, 0x02, 0x06);
3172         rtl8168g_set_pause_thresholds(tp, 0x38, 0x48);
3173
3174         rtl_set_def_aspm_entry_latency(tp);
3175
3176         rtl_reset_packet_filter(tp);
3177
3178         rtl_eri_set_bits(tp, 0xd4, 0x1f00);
3179         rtl_eri_set_bits(tp, 0xdc, 0x001c);
3180
3181         rtl_eri_write(tp, 0x5f0, ERIAR_MASK_0011, 0x4f87);
3182
3183         RTL_W32(tp, MISC, RTL_R32(tp, MISC) & ~RXDV_GATED_EN);
3184
3185         rtl_eri_write(tp, 0xc0, ERIAR_MASK_0011, 0x0000);
3186         rtl_eri_write(tp, 0xb8, ERIAR_MASK_0011, 0x0000);
3187
3188         rtl8168_config_eee_mac(tp);
3189
3190         RTL_W8(tp, DLLPR, RTL_R8(tp, DLLPR) & ~PFM_EN);
3191         RTL_W8(tp, MISC_1, RTL_R8(tp, MISC_1) & ~PFM_D3COLD_EN);
3192
3193         RTL_W8(tp, DLLPR, RTL_R8(tp, DLLPR) & ~TX_10M_PS_EN);
3194
3195         rtl_eri_clear_bits(tp, 0x1b0, BIT(12));
3196
3197         rtl_pcie_state_l2l3_disable(tp);
3198
3199         rg_saw_cnt = phy_read_paged(tp->phydev, 0x0c42, 0x13) & 0x3fff;
3200         if (rg_saw_cnt > 0) {
3201                 u16 sw_cnt_1ms_ini;
3202
3203                 sw_cnt_1ms_ini = 16000000/rg_saw_cnt;
3204                 sw_cnt_1ms_ini &= 0x0fff;
3205                 r8168_mac_ocp_modify(tp, 0xd412, 0x0fff, sw_cnt_1ms_ini);
3206         }
3207
3208         r8168_mac_ocp_modify(tp, 0xe056, 0x00f0, 0x0070);
3209         r8168_mac_ocp_modify(tp, 0xe052, 0x6000, 0x8008);
3210         r8168_mac_ocp_modify(tp, 0xe0d6, 0x01ff, 0x017f);
3211         r8168_mac_ocp_modify(tp, 0xd420, 0x0fff, 0x047f);
3212
3213         r8168_mac_ocp_write(tp, 0xe63e, 0x0001);
3214         r8168_mac_ocp_write(tp, 0xe63e, 0x0000);
3215         r8168_mac_ocp_write(tp, 0xc094, 0x0000);
3216         r8168_mac_ocp_write(tp, 0xc09e, 0x0000);
3217
3218         rtl_hw_aspm_clkreq_enable(tp, true);
3219 }
3220
3221 static void rtl_hw_start_8168ep(struct rtl8169_private *tp)
3222 {
3223         rtl8168ep_stop_cmac(tp);
3224
3225         rtl_set_fifo_size(tp, 0x08, 0x10, 0x02, 0x06);
3226         rtl8168g_set_pause_thresholds(tp, 0x2f, 0x5f);
3227
3228         rtl_set_def_aspm_entry_latency(tp);
3229
3230         rtl_reset_packet_filter(tp);
3231
3232         rtl_eri_set_bits(tp, 0xd4, 0x1f80);
3233
3234         rtl_eri_write(tp, 0x5f0, ERIAR_MASK_0011, 0x4f87);
3235
3236         RTL_W32(tp, MISC, RTL_R32(tp, MISC) & ~RXDV_GATED_EN);
3237
3238         rtl_eri_write(tp, 0xc0, ERIAR_MASK_0011, 0x0000);
3239         rtl_eri_write(tp, 0xb8, ERIAR_MASK_0011, 0x0000);
3240
3241         rtl8168_config_eee_mac(tp);
3242
3243         rtl_w0w1_eri(tp, 0x2fc, 0x01, 0x06);
3244
3245         RTL_W8(tp, DLLPR, RTL_R8(tp, DLLPR) & ~TX_10M_PS_EN);
3246
3247         rtl_pcie_state_l2l3_disable(tp);
3248 }
3249
3250 static void rtl_hw_start_8168ep_1(struct rtl8169_private *tp)
3251 {
3252         static const struct ephy_info e_info_8168ep_1[] = {
3253                 { 0x00, 0xffff, 0x10ab },
3254                 { 0x06, 0xffff, 0xf030 },
3255                 { 0x08, 0xffff, 0x2006 },
3256                 { 0x0d, 0xffff, 0x1666 },
3257                 { 0x0c, 0x3ff0, 0x0000 }
3258         };
3259
3260         /* disable aspm and clock request before access ephy */
3261         rtl_hw_aspm_clkreq_enable(tp, false);
3262         rtl_ephy_init(tp, e_info_8168ep_1);
3263
3264         rtl_hw_start_8168ep(tp);
3265
3266         rtl_hw_aspm_clkreq_enable(tp, true);
3267 }
3268
3269 static void rtl_hw_start_8168ep_2(struct rtl8169_private *tp)
3270 {
3271         static const struct ephy_info e_info_8168ep_2[] = {
3272                 { 0x00, 0xffff, 0x10a3 },
3273                 { 0x19, 0xffff, 0xfc00 },
3274                 { 0x1e, 0xffff, 0x20ea }
3275         };
3276
3277         /* disable aspm and clock request before access ephy */
3278         rtl_hw_aspm_clkreq_enable(tp, false);
3279         rtl_ephy_init(tp, e_info_8168ep_2);
3280
3281         rtl_hw_start_8168ep(tp);
3282
3283         RTL_W8(tp, DLLPR, RTL_R8(tp, DLLPR) & ~PFM_EN);
3284         RTL_W8(tp, MISC_1, RTL_R8(tp, MISC_1) & ~PFM_D3COLD_EN);
3285
3286         rtl_hw_aspm_clkreq_enable(tp, true);
3287 }
3288
3289 static void rtl_hw_start_8168ep_3(struct rtl8169_private *tp)
3290 {
3291         static const struct ephy_info e_info_8168ep_3[] = {
3292                 { 0x00, 0x0000, 0x0080 },
3293                 { 0x0d, 0x0100, 0x0200 },
3294                 { 0x19, 0x8021, 0x0000 },
3295                 { 0x1e, 0x0000, 0x2000 },
3296         };
3297
3298         /* disable aspm and clock request before access ephy */
3299         rtl_hw_aspm_clkreq_enable(tp, false);
3300         rtl_ephy_init(tp, e_info_8168ep_3);
3301
3302         rtl_hw_start_8168ep(tp);
3303
3304         RTL_W8(tp, DLLPR, RTL_R8(tp, DLLPR) & ~PFM_EN);
3305         RTL_W8(tp, MISC_1, RTL_R8(tp, MISC_1) & ~PFM_D3COLD_EN);
3306
3307         r8168_mac_ocp_modify(tp, 0xd3e2, 0x0fff, 0x0271);
3308         r8168_mac_ocp_modify(tp, 0xd3e4, 0x00ff, 0x0000);
3309         r8168_mac_ocp_modify(tp, 0xe860, 0x0000, 0x0080);
3310
3311         rtl_hw_aspm_clkreq_enable(tp, true);
3312 }
3313
3314 static void rtl_hw_start_8117(struct rtl8169_private *tp)
3315 {
3316         static const struct ephy_info e_info_8117[] = {
3317                 { 0x19, 0x0040, 0x1100 },
3318                 { 0x59, 0x0040, 0x1100 },
3319         };
3320         int rg_saw_cnt;
3321
3322         rtl8168ep_stop_cmac(tp);
3323
3324         /* disable aspm and clock request before access ephy */
3325         rtl_hw_aspm_clkreq_enable(tp, false);
3326         rtl_ephy_init(tp, e_info_8117);
3327
3328         rtl_set_fifo_size(tp, 0x08, 0x10, 0x02, 0x06);
3329         rtl8168g_set_pause_thresholds(tp, 0x2f, 0x5f);
3330
3331         rtl_set_def_aspm_entry_latency(tp);
3332
3333         rtl_reset_packet_filter(tp);
3334
3335         rtl_eri_set_bits(tp, 0xd4, 0x1f90);
3336
3337         rtl_eri_write(tp, 0x5f0, ERIAR_MASK_0011, 0x4f87);
3338
3339         RTL_W32(tp, MISC, RTL_R32(tp, MISC) & ~RXDV_GATED_EN);
3340
3341         rtl_eri_write(tp, 0xc0, ERIAR_MASK_0011, 0x0000);
3342         rtl_eri_write(tp, 0xb8, ERIAR_MASK_0011, 0x0000);
3343
3344         rtl8168_config_eee_mac(tp);
3345
3346         RTL_W8(tp, DLLPR, RTL_R8(tp, DLLPR) & ~PFM_EN);
3347         RTL_W8(tp, MISC_1, RTL_R8(tp, MISC_1) & ~PFM_D3COLD_EN);
3348
3349         RTL_W8(tp, DLLPR, RTL_R8(tp, DLLPR) & ~TX_10M_PS_EN);
3350
3351         rtl_eri_clear_bits(tp, 0x1b0, BIT(12));
3352
3353         rtl_pcie_state_l2l3_disable(tp);
3354
3355         rg_saw_cnt = phy_read_paged(tp->phydev, 0x0c42, 0x13) & 0x3fff;
3356         if (rg_saw_cnt > 0) {
3357                 u16 sw_cnt_1ms_ini;
3358
3359                 sw_cnt_1ms_ini = (16000000 / rg_saw_cnt) & 0x0fff;
3360                 r8168_mac_ocp_modify(tp, 0xd412, 0x0fff, sw_cnt_1ms_ini);
3361         }
3362
3363         r8168_mac_ocp_modify(tp, 0xe056, 0x00f0, 0x0070);
3364         r8168_mac_ocp_write(tp, 0xea80, 0x0003);
3365         r8168_mac_ocp_modify(tp, 0xe052, 0x0000, 0x0009);
3366         r8168_mac_ocp_modify(tp, 0xd420, 0x0fff, 0x047f);
3367
3368         r8168_mac_ocp_write(tp, 0xe63e, 0x0001);
3369         r8168_mac_ocp_write(tp, 0xe63e, 0x0000);
3370         r8168_mac_ocp_write(tp, 0xc094, 0x0000);
3371         r8168_mac_ocp_write(tp, 0xc09e, 0x0000);
3372
3373         /* firmware is for MAC only */
3374         r8169_apply_firmware(tp);
3375
3376         rtl_hw_aspm_clkreq_enable(tp, true);
3377 }
3378
3379 static void rtl_hw_start_8102e_1(struct rtl8169_private *tp)
3380 {
3381         static const struct ephy_info e_info_8102e_1[] = {
3382                 { 0x01, 0, 0x6e65 },
3383                 { 0x02, 0, 0x091f },
3384                 { 0x03, 0, 0xc2f9 },
3385                 { 0x06, 0, 0xafb5 },
3386                 { 0x07, 0, 0x0e00 },
3387                 { 0x19, 0, 0xec80 },
3388                 { 0x01, 0, 0x2e65 },
3389                 { 0x01, 0, 0x6e65 }
3390         };
3391         u8 cfg1;
3392
3393         rtl_set_def_aspm_entry_latency(tp);
3394
3395         RTL_W8(tp, DBG_REG, FIX_NAK_1);
3396
3397         RTL_W8(tp, Config1,
3398                LEDS1 | LEDS0 | Speed_down | MEMMAP | IOMAP | VPD | PMEnable);
3399         RTL_W8(tp, Config3, RTL_R8(tp, Config3) & ~Beacon_en);
3400
3401         cfg1 = RTL_R8(tp, Config1);
3402         if ((cfg1 & LEDS0) && (cfg1 & LEDS1))
3403                 RTL_W8(tp, Config1, cfg1 & ~LEDS0);
3404
3405         rtl_ephy_init(tp, e_info_8102e_1);
3406 }
3407
3408 static void rtl_hw_start_8102e_2(struct rtl8169_private *tp)
3409 {
3410         rtl_set_def_aspm_entry_latency(tp);
3411
3412         RTL_W8(tp, Config1, MEMMAP | IOMAP | VPD | PMEnable);
3413         RTL_W8(tp, Config3, RTL_R8(tp, Config3) & ~Beacon_en);
3414 }
3415
3416 static void rtl_hw_start_8102e_3(struct rtl8169_private *tp)
3417 {
3418         rtl_hw_start_8102e_2(tp);
3419
3420         rtl_ephy_write(tp, 0x03, 0xc2f9);
3421 }
3422
3423 static void rtl_hw_start_8401(struct rtl8169_private *tp)
3424 {
3425         static const struct ephy_info e_info_8401[] = {
3426                 { 0x01, 0xffff, 0x6fe5 },
3427                 { 0x03, 0xffff, 0x0599 },
3428                 { 0x06, 0xffff, 0xaf25 },
3429                 { 0x07, 0xffff, 0x8e68 },
3430         };
3431
3432         rtl_ephy_init(tp, e_info_8401);
3433         RTL_W8(tp, Config3, RTL_R8(tp, Config3) & ~Beacon_en);
3434 }
3435
3436 static void rtl_hw_start_8105e_1(struct rtl8169_private *tp)
3437 {
3438         static const struct ephy_info e_info_8105e_1[] = {
3439                 { 0x07, 0, 0x4000 },
3440                 { 0x19, 0, 0x0200 },
3441                 { 0x19, 0, 0x0020 },
3442                 { 0x1e, 0, 0x2000 },
3443                 { 0x03, 0, 0x0001 },
3444                 { 0x19, 0, 0x0100 },
3445                 { 0x19, 0, 0x0004 },
3446                 { 0x0a, 0, 0x0020 }
3447         };
3448
3449         /* Force LAN exit from ASPM if Rx/Tx are not idle */
3450         RTL_W32(tp, FuncEvent, RTL_R32(tp, FuncEvent) | 0x002800);
3451
3452         /* Disable Early Tally Counter */
3453         RTL_W32(tp, FuncEvent, RTL_R32(tp, FuncEvent) & ~0x010000);
3454
3455         RTL_W8(tp, MCU, RTL_R8(tp, MCU) | EN_NDP | EN_OOB_RESET);
3456         RTL_W8(tp, DLLPR, RTL_R8(tp, DLLPR) | PFM_EN);
3457
3458         rtl_ephy_init(tp, e_info_8105e_1);
3459
3460         rtl_pcie_state_l2l3_disable(tp);
3461 }
3462
3463 static void rtl_hw_start_8105e_2(struct rtl8169_private *tp)
3464 {
3465         rtl_hw_start_8105e_1(tp);
3466         rtl_ephy_write(tp, 0x1e, rtl_ephy_read(tp, 0x1e) | 0x8000);
3467 }
3468
3469 static void rtl_hw_start_8402(struct rtl8169_private *tp)
3470 {
3471         static const struct ephy_info e_info_8402[] = {
3472                 { 0x19, 0xffff, 0xff64 },
3473                 { 0x1e, 0, 0x4000 }
3474         };
3475
3476         rtl_set_def_aspm_entry_latency(tp);
3477
3478         /* Force LAN exit from ASPM if Rx/Tx are not idle */
3479         RTL_W32(tp, FuncEvent, RTL_R32(tp, FuncEvent) | 0x002800);
3480
3481         RTL_W8(tp, MCU, RTL_R8(tp, MCU) & ~NOW_IS_OOB);
3482
3483         rtl_ephy_init(tp, e_info_8402);
3484
3485         rtl_set_fifo_size(tp, 0x00, 0x00, 0x02, 0x06);
3486         rtl_reset_packet_filter(tp);
3487         rtl_eri_write(tp, 0xc0, ERIAR_MASK_0011, 0x0000);
3488         rtl_eri_write(tp, 0xb8, ERIAR_MASK_0011, 0x0000);
3489         rtl_w0w1_eri(tp, 0x0d4, 0x0e00, 0xff00);
3490
3491         /* disable EEE */
3492         rtl_eri_write(tp, 0x1b0, ERIAR_MASK_0011, 0x0000);
3493
3494         rtl_pcie_state_l2l3_disable(tp);
3495 }
3496
3497 static void rtl_hw_start_8106(struct rtl8169_private *tp)
3498 {
3499         rtl_hw_aspm_clkreq_enable(tp, false);
3500
3501         /* Force LAN exit from ASPM if Rx/Tx are not idle */
3502         RTL_W32(tp, FuncEvent, RTL_R32(tp, FuncEvent) | 0x002800);
3503
3504         RTL_W32(tp, MISC, (RTL_R32(tp, MISC) | DISABLE_LAN_EN) & ~EARLY_TALLY_EN);
3505         RTL_W8(tp, MCU, RTL_R8(tp, MCU) | EN_NDP | EN_OOB_RESET);
3506         RTL_W8(tp, DLLPR, RTL_R8(tp, DLLPR) & ~PFM_EN);
3507
3508         /* L0 7us, L1 32us - needed to avoid issues with link-up detection */
3509         rtl_set_aspm_entry_latency(tp, 0x2f);
3510
3511         rtl_eri_write(tp, 0x1d0, ERIAR_MASK_0011, 0x0000);
3512
3513         /* disable EEE */
3514         rtl_eri_write(tp, 0x1b0, ERIAR_MASK_0011, 0x0000);
3515
3516         rtl_pcie_state_l2l3_disable(tp);
3517         rtl_hw_aspm_clkreq_enable(tp, true);
3518 }
3519
3520 DECLARE_RTL_COND(rtl_mac_ocp_e00e_cond)
3521 {
3522         return r8168_mac_ocp_read(tp, 0xe00e) & BIT(13);
3523 }
3524
3525 static void rtl_hw_start_8125_common(struct rtl8169_private *tp)
3526 {
3527         rtl_pcie_state_l2l3_disable(tp);
3528
3529         RTL_W16(tp, 0x382, 0x221b);
3530         RTL_W8(tp, 0x4500, 0);
3531         RTL_W16(tp, 0x4800, 0);
3532
3533         /* disable UPS */
3534         r8168_mac_ocp_modify(tp, 0xd40a, 0x0010, 0x0000);
3535
3536         RTL_W8(tp, Config1, RTL_R8(tp, Config1) & ~0x10);
3537
3538         r8168_mac_ocp_write(tp, 0xc140, 0xffff);
3539         r8168_mac_ocp_write(tp, 0xc142, 0xffff);
3540
3541         r8168_mac_ocp_modify(tp, 0xd3e2, 0x0fff, 0x03a9);
3542         r8168_mac_ocp_modify(tp, 0xd3e4, 0x00ff, 0x0000);
3543         r8168_mac_ocp_modify(tp, 0xe860, 0x0000, 0x0080);
3544
3545         /* disable new tx descriptor format */
3546         r8168_mac_ocp_modify(tp, 0xeb58, 0x0001, 0x0000);
3547
3548         if (tp->mac_version == RTL_GIGA_MAC_VER_63)
3549                 r8168_mac_ocp_modify(tp, 0xe614, 0x0700, 0x0200);
3550         else
3551                 r8168_mac_ocp_modify(tp, 0xe614, 0x0700, 0x0400);
3552
3553         if (tp->mac_version == RTL_GIGA_MAC_VER_63)
3554                 r8168_mac_ocp_modify(tp, 0xe63e, 0x0c30, 0x0000);
3555         else
3556                 r8168_mac_ocp_modify(tp, 0xe63e, 0x0c30, 0x0020);
3557
3558         r8168_mac_ocp_modify(tp, 0xc0b4, 0x0000, 0x000c);
3559         r8168_mac_ocp_modify(tp, 0xeb6a, 0x00ff, 0x0033);
3560         r8168_mac_ocp_modify(tp, 0xeb50, 0x03e0, 0x0040);
3561         r8168_mac_ocp_modify(tp, 0xe056, 0x00f0, 0x0030);
3562         r8168_mac_ocp_modify(tp, 0xe040, 0x1000, 0x0000);
3563         r8168_mac_ocp_modify(tp, 0xea1c, 0x0003, 0x0001);
3564         r8168_mac_ocp_modify(tp, 0xe0c0, 0x4f0f, 0x4403);
3565         r8168_mac_ocp_modify(tp, 0xe052, 0x0080, 0x0068);
3566         r8168_mac_ocp_modify(tp, 0xc0ac, 0x0080, 0x1f00);
3567         r8168_mac_ocp_modify(tp, 0xd430, 0x0fff, 0x047f);
3568
3569         r8168_mac_ocp_modify(tp, 0xea1c, 0x0004, 0x0000);
3570         r8168_mac_ocp_modify(tp, 0xeb54, 0x0000, 0x0001);
3571         udelay(1);
3572         r8168_mac_ocp_modify(tp, 0xeb54, 0x0001, 0x0000);
3573         RTL_W16(tp, 0x1880, RTL_R16(tp, 0x1880) & ~0x0030);
3574
3575         r8168_mac_ocp_write(tp, 0xe098, 0xc302);
3576
3577         rtl_loop_wait_low(tp, &rtl_mac_ocp_e00e_cond, 1000, 10);
3578
3579         if (tp->mac_version == RTL_GIGA_MAC_VER_63)
3580                 rtl8125b_config_eee_mac(tp);
3581         else
3582                 rtl8125a_config_eee_mac(tp);
3583
3584         RTL_W32(tp, MISC, RTL_R32(tp, MISC) & ~RXDV_GATED_EN);
3585         udelay(10);
3586 }
3587
3588 static void rtl_hw_start_8125a_1(struct rtl8169_private *tp)
3589 {
3590         static const struct ephy_info e_info_8125a_1[] = {
3591                 { 0x01, 0xffff, 0xa812 },
3592                 { 0x09, 0xffff, 0x520c },
3593                 { 0x04, 0xffff, 0xd000 },
3594                 { 0x0d, 0xffff, 0xf702 },
3595                 { 0x0a, 0xffff, 0x8653 },
3596                 { 0x06, 0xffff, 0x001e },
3597                 { 0x08, 0xffff, 0x3595 },
3598                 { 0x20, 0xffff, 0x9455 },
3599                 { 0x21, 0xffff, 0x99ff },
3600                 { 0x02, 0xffff, 0x6046 },
3601                 { 0x29, 0xffff, 0xfe00 },
3602                 { 0x23, 0xffff, 0xab62 },
3603
3604                 { 0x41, 0xffff, 0xa80c },
3605                 { 0x49, 0xffff, 0x520c },
3606                 { 0x44, 0xffff, 0xd000 },
3607                 { 0x4d, 0xffff, 0xf702 },
3608                 { 0x4a, 0xffff, 0x8653 },
3609                 { 0x46, 0xffff, 0x001e },
3610                 { 0x48, 0xffff, 0x3595 },
3611                 { 0x60, 0xffff, 0x9455 },
3612                 { 0x61, 0xffff, 0x99ff },
3613                 { 0x42, 0xffff, 0x6046 },
3614                 { 0x69, 0xffff, 0xfe00 },
3615                 { 0x63, 0xffff, 0xab62 },
3616         };
3617
3618         rtl_set_def_aspm_entry_latency(tp);
3619
3620         /* disable aspm and clock request before access ephy */
3621         rtl_hw_aspm_clkreq_enable(tp, false);
3622         rtl_ephy_init(tp, e_info_8125a_1);
3623
3624         rtl_hw_start_8125_common(tp);
3625         rtl_hw_aspm_clkreq_enable(tp, true);
3626 }
3627
3628 static void rtl_hw_start_8125a_2(struct rtl8169_private *tp)
3629 {
3630         static const struct ephy_info e_info_8125a_2[] = {
3631                 { 0x04, 0xffff, 0xd000 },
3632                 { 0x0a, 0xffff, 0x8653 },
3633                 { 0x23, 0xffff, 0xab66 },
3634                 { 0x20, 0xffff, 0x9455 },
3635                 { 0x21, 0xffff, 0x99ff },
3636                 { 0x29, 0xffff, 0xfe04 },
3637
3638                 { 0x44, 0xffff, 0xd000 },
3639                 { 0x4a, 0xffff, 0x8653 },
3640                 { 0x63, 0xffff, 0xab66 },
3641                 { 0x60, 0xffff, 0x9455 },
3642                 { 0x61, 0xffff, 0x99ff },
3643                 { 0x69, 0xffff, 0xfe04 },
3644         };
3645
3646         rtl_set_def_aspm_entry_latency(tp);
3647
3648         /* disable aspm and clock request before access ephy */
3649         rtl_hw_aspm_clkreq_enable(tp, false);
3650         rtl_ephy_init(tp, e_info_8125a_2);
3651
3652         rtl_hw_start_8125_common(tp);
3653         rtl_hw_aspm_clkreq_enable(tp, true);
3654 }
3655
3656 static void rtl_hw_start_8125b(struct rtl8169_private *tp)
3657 {
3658         static const struct ephy_info e_info_8125b[] = {
3659                 { 0x0b, 0xffff, 0xa908 },
3660                 { 0x1e, 0xffff, 0x20eb },
3661                 { 0x4b, 0xffff, 0xa908 },
3662                 { 0x5e, 0xffff, 0x20eb },
3663                 { 0x22, 0x0030, 0x0020 },
3664                 { 0x62, 0x0030, 0x0020 },
3665         };
3666
3667         rtl_set_def_aspm_entry_latency(tp);
3668         rtl_hw_aspm_clkreq_enable(tp, false);
3669
3670         rtl_ephy_init(tp, e_info_8125b);
3671         rtl_hw_start_8125_common(tp);
3672
3673         rtl_hw_aspm_clkreq_enable(tp, true);
3674 }
3675
3676 static void rtl_hw_config(struct rtl8169_private *tp)
3677 {
3678         static const rtl_generic_fct hw_configs[] = {
3679                 [RTL_GIGA_MAC_VER_07] = rtl_hw_start_8102e_1,
3680                 [RTL_GIGA_MAC_VER_08] = rtl_hw_start_8102e_3,
3681                 [RTL_GIGA_MAC_VER_09] = rtl_hw_start_8102e_2,
3682                 [RTL_GIGA_MAC_VER_10] = NULL,
3683                 [RTL_GIGA_MAC_VER_11] = rtl_hw_start_8168b,
3684                 [RTL_GIGA_MAC_VER_12] = rtl_hw_start_8168b,
3685                 [RTL_GIGA_MAC_VER_13] = NULL,
3686                 [RTL_GIGA_MAC_VER_14] = rtl_hw_start_8401,
3687                 [RTL_GIGA_MAC_VER_16] = NULL,
3688                 [RTL_GIGA_MAC_VER_17] = rtl_hw_start_8168b,
3689                 [RTL_GIGA_MAC_VER_18] = rtl_hw_start_8168cp_1,
3690                 [RTL_GIGA_MAC_VER_19] = rtl_hw_start_8168c_1,
3691                 [RTL_GIGA_MAC_VER_20] = rtl_hw_start_8168c_2,
3692                 [RTL_GIGA_MAC_VER_21] = rtl_hw_start_8168c_2,
3693                 [RTL_GIGA_MAC_VER_22] = rtl_hw_start_8168c_4,
3694                 [RTL_GIGA_MAC_VER_23] = rtl_hw_start_8168cp_2,
3695                 [RTL_GIGA_MAC_VER_24] = rtl_hw_start_8168cp_3,
3696                 [RTL_GIGA_MAC_VER_25] = rtl_hw_start_8168d,
3697                 [RTL_GIGA_MAC_VER_26] = rtl_hw_start_8168d,
3698                 [RTL_GIGA_MAC_VER_27] = rtl_hw_start_8168d,
3699                 [RTL_GIGA_MAC_VER_28] = rtl_hw_start_8168d_4,
3700                 [RTL_GIGA_MAC_VER_29] = rtl_hw_start_8105e_1,
3701                 [RTL_GIGA_MAC_VER_30] = rtl_hw_start_8105e_2,
3702                 [RTL_GIGA_MAC_VER_31] = rtl_hw_start_8168d,
3703                 [RTL_GIGA_MAC_VER_32] = rtl_hw_start_8168e_1,
3704                 [RTL_GIGA_MAC_VER_33] = rtl_hw_start_8168e_1,
3705                 [RTL_GIGA_MAC_VER_34] = rtl_hw_start_8168e_2,
3706                 [RTL_GIGA_MAC_VER_35] = rtl_hw_start_8168f_1,
3707                 [RTL_GIGA_MAC_VER_36] = rtl_hw_start_8168f_1,
3708                 [RTL_GIGA_MAC_VER_37] = rtl_hw_start_8402,
3709                 [RTL_GIGA_MAC_VER_38] = rtl_hw_start_8411,
3710                 [RTL_GIGA_MAC_VER_39] = rtl_hw_start_8106,
3711                 [RTL_GIGA_MAC_VER_40] = rtl_hw_start_8168g_1,
3712                 [RTL_GIGA_MAC_VER_41] = rtl_hw_start_8168g_1,
3713                 [RTL_GIGA_MAC_VER_42] = rtl_hw_start_8168g_2,
3714                 [RTL_GIGA_MAC_VER_43] = rtl_hw_start_8168g_2,
3715                 [RTL_GIGA_MAC_VER_44] = rtl_hw_start_8411_2,
3716                 [RTL_GIGA_MAC_VER_45] = rtl_hw_start_8168h_1,
3717                 [RTL_GIGA_MAC_VER_46] = rtl_hw_start_8168h_1,
3718                 [RTL_GIGA_MAC_VER_47] = rtl_hw_start_8168h_1,
3719                 [RTL_GIGA_MAC_VER_48] = rtl_hw_start_8168h_1,
3720                 [RTL_GIGA_MAC_VER_49] = rtl_hw_start_8168ep_1,
3721                 [RTL_GIGA_MAC_VER_50] = rtl_hw_start_8168ep_2,
3722                 [RTL_GIGA_MAC_VER_51] = rtl_hw_start_8168ep_3,
3723                 [RTL_GIGA_MAC_VER_52] = rtl_hw_start_8117,
3724                 [RTL_GIGA_MAC_VER_53] = rtl_hw_start_8117,
3725                 [RTL_GIGA_MAC_VER_60] = rtl_hw_start_8125a_1,
3726                 [RTL_GIGA_MAC_VER_61] = rtl_hw_start_8125a_2,
3727                 [RTL_GIGA_MAC_VER_63] = rtl_hw_start_8125b,
3728         };
3729
3730         if (hw_configs[tp->mac_version])
3731                 hw_configs[tp->mac_version](tp);
3732 }
3733
3734 static void rtl_hw_start_8125(struct rtl8169_private *tp)
3735 {
3736         int i;
3737
3738         /* disable interrupt coalescing */
3739         for (i = 0xa00; i < 0xb00; i += 4)
3740                 RTL_W32(tp, i, 0);
3741
3742         rtl_hw_config(tp);
3743 }
3744
3745 static void rtl_hw_start_8168(struct rtl8169_private *tp)
3746 {
3747         if (rtl_is_8168evl_up(tp))
3748                 RTL_W8(tp, MaxTxPacketSize, EarlySize);
3749         else
3750                 RTL_W8(tp, MaxTxPacketSize, TxPacketMax);
3751
3752         rtl_hw_config(tp);
3753
3754         /* disable interrupt coalescing */
3755         RTL_W16(tp, IntrMitigate, 0x0000);
3756 }
3757
3758 static void rtl_hw_start_8169(struct rtl8169_private *tp)
3759 {
3760         RTL_W8(tp, EarlyTxThres, NoEarlyTx);
3761
3762         tp->cp_cmd |= PCIMulRW;
3763
3764         if (tp->mac_version == RTL_GIGA_MAC_VER_02 ||
3765             tp->mac_version == RTL_GIGA_MAC_VER_03)
3766                 tp->cp_cmd |= EnAnaPLL;
3767
3768         RTL_W16(tp, CPlusCmd, tp->cp_cmd);
3769
3770         rtl8169_set_magic_reg(tp);
3771
3772         /* disable interrupt coalescing */
3773         RTL_W16(tp, IntrMitigate, 0x0000);
3774 }
3775
3776 static void rtl_hw_start(struct  rtl8169_private *tp)
3777 {
3778         rtl_unlock_config_regs(tp);
3779
3780         RTL_W16(tp, CPlusCmd, tp->cp_cmd);
3781
3782         if (tp->mac_version <= RTL_GIGA_MAC_VER_06)
3783                 rtl_hw_start_8169(tp);
3784         else if (rtl_is_8125(tp))
3785                 rtl_hw_start_8125(tp);
3786         else
3787                 rtl_hw_start_8168(tp);
3788
3789         rtl_set_rx_max_size(tp);
3790         rtl_set_rx_tx_desc_registers(tp);
3791         rtl_lock_config_regs(tp);
3792
3793         rtl_jumbo_config(tp);
3794
3795         /* Initially a 10 us delay. Turned it into a PCI commit. - FR */
3796         rtl_pci_commit(tp);
3797
3798         RTL_W8(tp, ChipCmd, CmdTxEnb | CmdRxEnb);
3799         rtl_init_rxcfg(tp);
3800         rtl_set_tx_config_registers(tp);
3801         rtl_set_rx_config_features(tp, tp->dev->features);
3802         rtl_set_rx_mode(tp->dev);
3803         rtl_irq_enable(tp);
3804 }
3805
3806 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
3807 {
3808         struct rtl8169_private *tp = netdev_priv(dev);
3809
3810         dev->mtu = new_mtu;
3811         netdev_update_features(dev);
3812         rtl_jumbo_config(tp);
3813
3814         switch (tp->mac_version) {
3815         case RTL_GIGA_MAC_VER_61:
3816         case RTL_GIGA_MAC_VER_63:
3817                 rtl8125_set_eee_txidle_timer(tp);
3818                 break;
3819         default:
3820                 break;
3821         }
3822
3823         return 0;
3824 }
3825
3826 static void rtl8169_mark_to_asic(struct RxDesc *desc)
3827 {
3828         u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
3829
3830         desc->opts2 = 0;
3831         /* Force memory writes to complete before releasing descriptor */
3832         dma_wmb();
3833         WRITE_ONCE(desc->opts1, cpu_to_le32(DescOwn | eor | R8169_RX_BUF_SIZE));
3834 }
3835
3836 static struct page *rtl8169_alloc_rx_data(struct rtl8169_private *tp,
3837                                           struct RxDesc *desc)
3838 {
3839         struct device *d = tp_to_dev(tp);
3840         int node = dev_to_node(d);
3841         dma_addr_t mapping;
3842         struct page *data;
3843
3844         data = alloc_pages_node(node, GFP_KERNEL, get_order(R8169_RX_BUF_SIZE));
3845         if (!data)
3846                 return NULL;
3847
3848         mapping = dma_map_page(d, data, 0, R8169_RX_BUF_SIZE, DMA_FROM_DEVICE);
3849         if (unlikely(dma_mapping_error(d, mapping))) {
3850                 netdev_err(tp->dev, "Failed to map RX DMA!\n");
3851                 __free_pages(data, get_order(R8169_RX_BUF_SIZE));
3852                 return NULL;
3853         }
3854
3855         desc->addr = cpu_to_le64(mapping);
3856         rtl8169_mark_to_asic(desc);
3857
3858         return data;
3859 }
3860
3861 static void rtl8169_rx_clear(struct rtl8169_private *tp)
3862 {
3863         int i;
3864
3865         for (i = 0; i < NUM_RX_DESC && tp->Rx_databuff[i]; i++) {
3866                 dma_unmap_page(tp_to_dev(tp),
3867                                le64_to_cpu(tp->RxDescArray[i].addr),
3868                                R8169_RX_BUF_SIZE, DMA_FROM_DEVICE);
3869                 __free_pages(tp->Rx_databuff[i], get_order(R8169_RX_BUF_SIZE));
3870                 tp->Rx_databuff[i] = NULL;
3871                 tp->RxDescArray[i].addr = 0;
3872                 tp->RxDescArray[i].opts1 = 0;
3873         }
3874 }
3875
3876 static int rtl8169_rx_fill(struct rtl8169_private *tp)
3877 {
3878         int i;
3879
3880         for (i = 0; i < NUM_RX_DESC; i++) {
3881                 struct page *data;
3882
3883                 data = rtl8169_alloc_rx_data(tp, tp->RxDescArray + i);
3884                 if (!data) {
3885                         rtl8169_rx_clear(tp);
3886                         return -ENOMEM;
3887                 }
3888                 tp->Rx_databuff[i] = data;
3889         }
3890
3891         /* mark as last descriptor in the ring */
3892         tp->RxDescArray[NUM_RX_DESC - 1].opts1 |= cpu_to_le32(RingEnd);
3893
3894         return 0;
3895 }
3896
3897 static int rtl8169_init_ring(struct rtl8169_private *tp)
3898 {
3899         rtl8169_init_ring_indexes(tp);
3900
3901         memset(tp->tx_skb, 0, sizeof(tp->tx_skb));
3902         memset(tp->Rx_databuff, 0, sizeof(tp->Rx_databuff));
3903
3904         return rtl8169_rx_fill(tp);
3905 }
3906
3907 static void rtl8169_unmap_tx_skb(struct rtl8169_private *tp, unsigned int entry)
3908 {
3909         struct ring_info *tx_skb = tp->tx_skb + entry;
3910         struct TxDesc *desc = tp->TxDescArray + entry;
3911
3912         dma_unmap_single(tp_to_dev(tp), le64_to_cpu(desc->addr), tx_skb->len,
3913                          DMA_TO_DEVICE);
3914         memset(desc, 0, sizeof(*desc));
3915         memset(tx_skb, 0, sizeof(*tx_skb));
3916 }
3917
3918 static void rtl8169_tx_clear_range(struct rtl8169_private *tp, u32 start,
3919                                    unsigned int n)
3920 {
3921         unsigned int i;
3922
3923         for (i = 0; i < n; i++) {
3924                 unsigned int entry = (start + i) % NUM_TX_DESC;
3925                 struct ring_info *tx_skb = tp->tx_skb + entry;
3926                 unsigned int len = tx_skb->len;
3927
3928                 if (len) {
3929                         struct sk_buff *skb = tx_skb->skb;
3930
3931                         rtl8169_unmap_tx_skb(tp, entry);
3932                         if (skb)
3933                                 dev_consume_skb_any(skb);
3934                 }
3935         }
3936 }
3937
3938 static void rtl8169_tx_clear(struct rtl8169_private *tp)
3939 {
3940         rtl8169_tx_clear_range(tp, tp->dirty_tx, NUM_TX_DESC);
3941         netdev_reset_queue(tp->dev);
3942 }
3943
3944 static void rtl8169_cleanup(struct rtl8169_private *tp, bool going_down)
3945 {
3946         napi_disable(&tp->napi);
3947
3948         /* Give a racing hard_start_xmit a few cycles to complete. */
3949         synchronize_net();
3950
3951         /* Disable interrupts */
3952         rtl8169_irq_mask_and_ack(tp);
3953
3954         rtl_rx_close(tp);
3955
3956         if (going_down && tp->dev->wol_enabled)
3957                 goto no_reset;
3958
3959         switch (tp->mac_version) {
3960         case RTL_GIGA_MAC_VER_27:
3961         case RTL_GIGA_MAC_VER_28:
3962         case RTL_GIGA_MAC_VER_31:
3963                 rtl_loop_wait_low(tp, &rtl_npq_cond, 20, 2000);
3964                 break;
3965         case RTL_GIGA_MAC_VER_34 ... RTL_GIGA_MAC_VER_38:
3966                 RTL_W8(tp, ChipCmd, RTL_R8(tp, ChipCmd) | StopReq);
3967                 rtl_loop_wait_high(tp, &rtl_txcfg_empty_cond, 100, 666);
3968                 break;
3969         case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_63:
3970                 rtl_enable_rxdvgate(tp);
3971                 fsleep(2000);
3972                 break;
3973         default:
3974                 RTL_W8(tp, ChipCmd, RTL_R8(tp, ChipCmd) | StopReq);
3975                 fsleep(100);
3976                 break;
3977         }
3978
3979         rtl_hw_reset(tp);
3980 no_reset:
3981         rtl8169_tx_clear(tp);
3982         rtl8169_init_ring_indexes(tp);
3983 }
3984
3985 static void rtl_reset_work(struct rtl8169_private *tp)
3986 {
3987         int i;
3988
3989         netif_stop_queue(tp->dev);
3990
3991         rtl8169_cleanup(tp, false);
3992
3993         for (i = 0; i < NUM_RX_DESC; i++)
3994                 rtl8169_mark_to_asic(tp->RxDescArray + i);
3995
3996         napi_enable(&tp->napi);
3997         rtl_hw_start(tp);
3998 }
3999
4000 static void rtl8169_tx_timeout(struct net_device *dev, unsigned int txqueue)
4001 {
4002         struct rtl8169_private *tp = netdev_priv(dev);
4003
4004         rtl_schedule_task(tp, RTL_FLAG_TASK_RESET_PENDING);
4005 }
4006
4007 static int rtl8169_tx_map(struct rtl8169_private *tp, const u32 *opts, u32 len,
4008                           void *addr, unsigned int entry, bool desc_own)
4009 {
4010         struct TxDesc *txd = tp->TxDescArray + entry;
4011         struct device *d = tp_to_dev(tp);
4012         dma_addr_t mapping;
4013         u32 opts1;
4014         int ret;
4015
4016         mapping = dma_map_single(d, addr, len, DMA_TO_DEVICE);
4017         ret = dma_mapping_error(d, mapping);
4018         if (unlikely(ret)) {
4019                 if (net_ratelimit())
4020                         netdev_err(tp->dev, "Failed to map TX data!\n");
4021                 return ret;
4022         }
4023
4024         txd->addr = cpu_to_le64(mapping);
4025         txd->opts2 = cpu_to_le32(opts[1]);
4026
4027         opts1 = opts[0] | len;
4028         if (entry == NUM_TX_DESC - 1)
4029                 opts1 |= RingEnd;
4030         if (desc_own)
4031                 opts1 |= DescOwn;
4032         txd->opts1 = cpu_to_le32(opts1);
4033
4034         tp->tx_skb[entry].len = len;
4035
4036         return 0;
4037 }
4038
4039 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
4040                               const u32 *opts, unsigned int entry)
4041 {
4042         struct skb_shared_info *info = skb_shinfo(skb);
4043         unsigned int cur_frag;
4044
4045         for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
4046                 const skb_frag_t *frag = info->frags + cur_frag;
4047                 void *addr = skb_frag_address(frag);
4048                 u32 len = skb_frag_size(frag);
4049
4050                 entry = (entry + 1) % NUM_TX_DESC;
4051
4052                 if (unlikely(rtl8169_tx_map(tp, opts, len, addr, entry, true)))
4053                         goto err_out;
4054         }
4055
4056         return 0;
4057
4058 err_out:
4059         rtl8169_tx_clear_range(tp, tp->cur_tx + 1, cur_frag);
4060         return -EIO;
4061 }
4062
4063 static bool rtl_skb_is_udp(struct sk_buff *skb)
4064 {
4065         int no = skb_network_offset(skb);
4066         struct ipv6hdr *i6h, _i6h;
4067         struct iphdr *ih, _ih;
4068
4069         switch (vlan_get_protocol(skb)) {
4070         case htons(ETH_P_IP):
4071                 ih = skb_header_pointer(skb, no, sizeof(_ih), &_ih);
4072                 return ih && ih->protocol == IPPROTO_UDP;
4073         case htons(ETH_P_IPV6):
4074                 i6h = skb_header_pointer(skb, no, sizeof(_i6h), &_i6h);
4075                 return i6h && i6h->nexthdr == IPPROTO_UDP;
4076         default:
4077                 return false;
4078         }
4079 }
4080
4081 #define RTL_MIN_PATCH_LEN       47
4082
4083 /* see rtl8125_get_patch_pad_len() in r8125 vendor driver */
4084 static unsigned int rtl8125_quirk_udp_padto(struct rtl8169_private *tp,
4085                                             struct sk_buff *skb)
4086 {
4087         unsigned int padto = 0, len = skb->len;
4088
4089         if (rtl_is_8125(tp) && len < 128 + RTL_MIN_PATCH_LEN &&
4090             rtl_skb_is_udp(skb) && skb_transport_header_was_set(skb)) {
4091                 unsigned int trans_data_len = skb_tail_pointer(skb) -
4092                                               skb_transport_header(skb);
4093
4094                 if (trans_data_len >= offsetof(struct udphdr, len) &&
4095                     trans_data_len < RTL_MIN_PATCH_LEN) {
4096                         u16 dest = ntohs(udp_hdr(skb)->dest);
4097
4098                         /* dest is a standard PTP port */
4099                         if (dest == 319 || dest == 320)
4100                                 padto = len + RTL_MIN_PATCH_LEN - trans_data_len;
4101                 }
4102
4103                 if (trans_data_len < sizeof(struct udphdr))
4104                         padto = max_t(unsigned int, padto,
4105                                       len + sizeof(struct udphdr) - trans_data_len);
4106         }
4107
4108         return padto;
4109 }
4110
4111 static unsigned int rtl_quirk_packet_padto(struct rtl8169_private *tp,
4112                                            struct sk_buff *skb)
4113 {
4114         unsigned int padto;
4115
4116         padto = rtl8125_quirk_udp_padto(tp, skb);
4117
4118         switch (tp->mac_version) {
4119         case RTL_GIGA_MAC_VER_34:
4120         case RTL_GIGA_MAC_VER_60:
4121         case RTL_GIGA_MAC_VER_61:
4122         case RTL_GIGA_MAC_VER_63:
4123                 padto = max_t(unsigned int, padto, ETH_ZLEN);
4124                 break;
4125         default:
4126                 break;
4127         }
4128
4129         return padto;
4130 }
4131
4132 static void rtl8169_tso_csum_v1(struct sk_buff *skb, u32 *opts)
4133 {
4134         u32 mss = skb_shinfo(skb)->gso_size;
4135
4136         if (mss) {
4137                 opts[0] |= TD_LSO;
4138                 opts[0] |= mss << TD0_MSS_SHIFT;
4139         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
4140                 const struct iphdr *ip = ip_hdr(skb);
4141
4142                 if (ip->protocol == IPPROTO_TCP)
4143                         opts[0] |= TD0_IP_CS | TD0_TCP_CS;
4144                 else if (ip->protocol == IPPROTO_UDP)
4145                         opts[0] |= TD0_IP_CS | TD0_UDP_CS;
4146                 else
4147                         WARN_ON_ONCE(1);
4148         }
4149 }
4150
4151 static bool rtl8169_tso_csum_v2(struct rtl8169_private *tp,
4152                                 struct sk_buff *skb, u32 *opts)
4153 {
4154         u32 transport_offset = (u32)skb_transport_offset(skb);
4155         struct skb_shared_info *shinfo = skb_shinfo(skb);
4156         u32 mss = shinfo->gso_size;
4157
4158         if (mss) {
4159                 if (shinfo->gso_type & SKB_GSO_TCPV4) {
4160                         opts[0] |= TD1_GTSENV4;
4161                 } else if (shinfo->gso_type & SKB_GSO_TCPV6) {
4162                         if (skb_cow_head(skb, 0))
4163                                 return false;
4164
4165                         tcp_v6_gso_csum_prep(skb);
4166                         opts[0] |= TD1_GTSENV6;
4167                 } else {
4168                         WARN_ON_ONCE(1);
4169                 }
4170
4171                 opts[0] |= transport_offset << GTTCPHO_SHIFT;
4172                 opts[1] |= mss << TD1_MSS_SHIFT;
4173         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
4174                 u8 ip_protocol;
4175
4176                 switch (vlan_get_protocol(skb)) {
4177                 case htons(ETH_P_IP):
4178                         opts[1] |= TD1_IPv4_CS;
4179                         ip_protocol = ip_hdr(skb)->protocol;
4180                         break;
4181
4182                 case htons(ETH_P_IPV6):
4183                         opts[1] |= TD1_IPv6_CS;
4184                         ip_protocol = ipv6_hdr(skb)->nexthdr;
4185                         break;
4186
4187                 default:
4188                         ip_protocol = IPPROTO_RAW;
4189                         break;
4190                 }
4191
4192                 if (ip_protocol == IPPROTO_TCP)
4193                         opts[1] |= TD1_TCP_CS;
4194                 else if (ip_protocol == IPPROTO_UDP)
4195                         opts[1] |= TD1_UDP_CS;
4196                 else
4197                         WARN_ON_ONCE(1);
4198
4199                 opts[1] |= transport_offset << TCPHO_SHIFT;
4200         } else {
4201                 unsigned int padto = rtl_quirk_packet_padto(tp, skb);
4202
4203                 /* skb_padto would free the skb on error */
4204                 return !__skb_put_padto(skb, padto, false);
4205         }
4206
4207         return true;
4208 }
4209
4210 static bool rtl_tx_slots_avail(struct rtl8169_private *tp)
4211 {
4212         unsigned int slots_avail = READ_ONCE(tp->dirty_tx) + NUM_TX_DESC
4213                                         - READ_ONCE(tp->cur_tx);
4214
4215         /* A skbuff with nr_frags needs nr_frags+1 entries in the tx queue */
4216         return slots_avail > MAX_SKB_FRAGS;
4217 }
4218
4219 /* Versions RTL8102e and from RTL8168c onwards support csum_v2 */
4220 static bool rtl_chip_supports_csum_v2(struct rtl8169_private *tp)
4221 {
4222         switch (tp->mac_version) {
4223         case RTL_GIGA_MAC_VER_02 ... RTL_GIGA_MAC_VER_06:
4224         case RTL_GIGA_MAC_VER_10 ... RTL_GIGA_MAC_VER_17:
4225                 return false;
4226         default:
4227                 return true;
4228         }
4229 }
4230
4231 static void rtl8169_doorbell(struct rtl8169_private *tp)
4232 {
4233         if (rtl_is_8125(tp))
4234                 RTL_W16(tp, TxPoll_8125, BIT(0));
4235         else
4236                 RTL_W8(tp, TxPoll, NPQ);
4237 }
4238
4239 static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb,
4240                                       struct net_device *dev)
4241 {
4242         unsigned int frags = skb_shinfo(skb)->nr_frags;
4243         struct rtl8169_private *tp = netdev_priv(dev);
4244         unsigned int entry = tp->cur_tx % NUM_TX_DESC;
4245         struct TxDesc *txd_first, *txd_last;
4246         bool stop_queue, door_bell;
4247         u32 opts[2];
4248
4249         if (unlikely(!rtl_tx_slots_avail(tp))) {
4250                 if (net_ratelimit())
4251                         netdev_err(dev, "BUG! Tx Ring full when queue awake!\n");
4252                 goto err_stop_0;
4253         }
4254
4255         opts[1] = rtl8169_tx_vlan_tag(skb);
4256         opts[0] = 0;
4257
4258         if (!rtl_chip_supports_csum_v2(tp))
4259                 rtl8169_tso_csum_v1(skb, opts);
4260         else if (!rtl8169_tso_csum_v2(tp, skb, opts))
4261                 goto err_dma_0;
4262
4263         if (unlikely(rtl8169_tx_map(tp, opts, skb_headlen(skb), skb->data,
4264                                     entry, false)))
4265                 goto err_dma_0;
4266
4267         txd_first = tp->TxDescArray + entry;
4268
4269         if (frags) {
4270                 if (rtl8169_xmit_frags(tp, skb, opts, entry))
4271                         goto err_dma_1;
4272                 entry = (entry + frags) % NUM_TX_DESC;
4273         }
4274
4275         txd_last = tp->TxDescArray + entry;
4276         txd_last->opts1 |= cpu_to_le32(LastFrag);
4277         tp->tx_skb[entry].skb = skb;
4278
4279         skb_tx_timestamp(skb);
4280
4281         /* Force memory writes to complete before releasing descriptor */
4282         dma_wmb();
4283
4284         door_bell = __netdev_sent_queue(dev, skb->len, netdev_xmit_more());
4285
4286         txd_first->opts1 |= cpu_to_le32(DescOwn | FirstFrag);
4287
4288         /* rtl_tx needs to see descriptor changes before updated tp->cur_tx */
4289         smp_wmb();
4290
4291         WRITE_ONCE(tp->cur_tx, tp->cur_tx + frags + 1);
4292
4293         stop_queue = !rtl_tx_slots_avail(tp);
4294         if (unlikely(stop_queue)) {
4295                 /* Avoid wrongly optimistic queue wake-up: rtl_tx thread must
4296                  * not miss a ring update when it notices a stopped queue.
4297                  */
4298                 smp_wmb();
4299                 netif_stop_queue(dev);
4300                 /* Sync with rtl_tx:
4301                  * - publish queue status and cur_tx ring index (write barrier)
4302                  * - refresh dirty_tx ring index (read barrier).
4303                  * May the current thread have a pessimistic view of the ring
4304                  * status and forget to wake up queue, a racing rtl_tx thread
4305                  * can't.
4306                  */
4307                 smp_mb__after_atomic();
4308                 if (rtl_tx_slots_avail(tp))
4309                         netif_start_queue(dev);
4310                 door_bell = true;
4311         }
4312
4313         if (door_bell)
4314                 rtl8169_doorbell(tp);
4315
4316         return NETDEV_TX_OK;
4317
4318 err_dma_1:
4319         rtl8169_unmap_tx_skb(tp, entry);
4320 err_dma_0:
4321         dev_kfree_skb_any(skb);
4322         dev->stats.tx_dropped++;
4323         return NETDEV_TX_OK;
4324
4325 err_stop_0:
4326         netif_stop_queue(dev);
4327         dev->stats.tx_dropped++;
4328         return NETDEV_TX_BUSY;
4329 }
4330
4331 static unsigned int rtl_last_frag_len(struct sk_buff *skb)
4332 {
4333         struct skb_shared_info *info = skb_shinfo(skb);
4334         unsigned int nr_frags = info->nr_frags;
4335
4336         if (!nr_frags)
4337                 return UINT_MAX;
4338
4339         return skb_frag_size(info->frags + nr_frags - 1);
4340 }
4341
4342 /* Workaround for hw issues with TSO on RTL8168evl */
4343 static netdev_features_t rtl8168evl_fix_tso(struct sk_buff *skb,
4344                                             netdev_features_t features)
4345 {
4346         /* IPv4 header has options field */
4347         if (vlan_get_protocol(skb) == htons(ETH_P_IP) &&
4348             ip_hdrlen(skb) > sizeof(struct iphdr))
4349                 features &= ~NETIF_F_ALL_TSO;
4350
4351         /* IPv4 TCP header has options field */
4352         else if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4 &&
4353                  tcp_hdrlen(skb) > sizeof(struct tcphdr))
4354                 features &= ~NETIF_F_ALL_TSO;
4355
4356         else if (rtl_last_frag_len(skb) <= 6)
4357                 features &= ~NETIF_F_ALL_TSO;
4358
4359         return features;
4360 }
4361
4362 static netdev_features_t rtl8169_features_check(struct sk_buff *skb,
4363                                                 struct net_device *dev,
4364                                                 netdev_features_t features)
4365 {
4366         int transport_offset = skb_transport_offset(skb);
4367         struct rtl8169_private *tp = netdev_priv(dev);
4368
4369         if (skb_is_gso(skb)) {
4370                 if (tp->mac_version == RTL_GIGA_MAC_VER_34)
4371                         features = rtl8168evl_fix_tso(skb, features);
4372
4373                 if (transport_offset > GTTCPHO_MAX &&
4374                     rtl_chip_supports_csum_v2(tp))
4375                         features &= ~NETIF_F_ALL_TSO;
4376         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
4377                 /* work around hw bug on some chip versions */
4378                 if (skb->len < ETH_ZLEN)
4379                         features &= ~NETIF_F_CSUM_MASK;
4380
4381                 if (rtl_quirk_packet_padto(tp, skb))
4382                         features &= ~NETIF_F_CSUM_MASK;
4383
4384                 if (transport_offset > TCPHO_MAX &&
4385                     rtl_chip_supports_csum_v2(tp))
4386                         features &= ~NETIF_F_CSUM_MASK;
4387         }
4388
4389         return vlan_features_check(skb, features);
4390 }
4391
4392 static void rtl8169_pcierr_interrupt(struct net_device *dev)
4393 {
4394         struct rtl8169_private *tp = netdev_priv(dev);
4395         struct pci_dev *pdev = tp->pci_dev;
4396         int pci_status_errs;
4397         u16 pci_cmd;
4398
4399         pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
4400
4401         pci_status_errs = pci_status_get_and_clear_errors(pdev);
4402
4403         if (net_ratelimit())
4404                 netdev_err(dev, "PCI error (cmd = 0x%04x, status_errs = 0x%04x)\n",
4405                            pci_cmd, pci_status_errs);
4406
4407         rtl_schedule_task(tp, RTL_FLAG_TASK_RESET_PENDING);
4408 }
4409
4410 static void rtl_tx(struct net_device *dev, struct rtl8169_private *tp,
4411                    int budget)
4412 {
4413         unsigned int dirty_tx, bytes_compl = 0, pkts_compl = 0;
4414         struct sk_buff *skb;
4415
4416         dirty_tx = tp->dirty_tx;
4417
4418         while (READ_ONCE(tp->cur_tx) != dirty_tx) {
4419                 unsigned int entry = dirty_tx % NUM_TX_DESC;
4420                 u32 status;
4421
4422                 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
4423                 if (status & DescOwn)
4424                         break;
4425
4426                 skb = tp->tx_skb[entry].skb;
4427                 rtl8169_unmap_tx_skb(tp, entry);
4428
4429                 if (skb) {
4430                         pkts_compl++;
4431                         bytes_compl += skb->len;
4432                         napi_consume_skb(skb, budget);
4433                 }
4434                 dirty_tx++;
4435         }
4436
4437         if (tp->dirty_tx != dirty_tx) {
4438                 netdev_completed_queue(dev, pkts_compl, bytes_compl);
4439                 dev_sw_netstats_tx_add(dev, pkts_compl, bytes_compl);
4440
4441                 /* Sync with rtl8169_start_xmit:
4442                  * - publish dirty_tx ring index (write barrier)
4443                  * - refresh cur_tx ring index and queue status (read barrier)
4444                  * May the current thread miss the stopped queue condition,
4445                  * a racing xmit thread can only have a right view of the
4446                  * ring status.
4447                  */
4448                 smp_store_mb(tp->dirty_tx, dirty_tx);
4449                 if (netif_queue_stopped(dev) && rtl_tx_slots_avail(tp))
4450                         netif_wake_queue(dev);
4451                 /*
4452                  * 8168 hack: TxPoll requests are lost when the Tx packets are
4453                  * too close. Let's kick an extra TxPoll request when a burst
4454                  * of start_xmit activity is detected (if it is not detected,
4455                  * it is slow enough). -- FR
4456                  * If skb is NULL then we come here again once a tx irq is
4457                  * triggered after the last fragment is marked transmitted.
4458                  */
4459                 if (tp->cur_tx != dirty_tx && skb)
4460                         rtl8169_doorbell(tp);
4461         }
4462 }
4463
4464 static inline int rtl8169_fragmented_frame(u32 status)
4465 {
4466         return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
4467 }
4468
4469 static inline void rtl8169_rx_csum(struct sk_buff *skb, u32 opts1)
4470 {
4471         u32 status = opts1 & (RxProtoMask | RxCSFailMask);
4472
4473         if (status == RxProtoTCP || status == RxProtoUDP)
4474                 skb->ip_summed = CHECKSUM_UNNECESSARY;
4475         else
4476                 skb_checksum_none_assert(skb);
4477 }
4478
4479 static int rtl_rx(struct net_device *dev, struct rtl8169_private *tp, int budget)
4480 {
4481         struct device *d = tp_to_dev(tp);
4482         int count;
4483
4484         for (count = 0; count < budget; count++, tp->cur_rx++) {
4485                 unsigned int pkt_size, entry = tp->cur_rx % NUM_RX_DESC;
4486                 struct RxDesc *desc = tp->RxDescArray + entry;
4487                 struct sk_buff *skb;
4488                 const void *rx_buf;
4489                 dma_addr_t addr;
4490                 u32 status;
4491
4492                 status = le32_to_cpu(desc->opts1);
4493                 if (status & DescOwn)
4494                         break;
4495
4496                 /* This barrier is needed to keep us from reading
4497                  * any other fields out of the Rx descriptor until
4498                  * we know the status of DescOwn
4499                  */
4500                 dma_rmb();
4501
4502                 if (unlikely(status & RxRES)) {
4503                         if (net_ratelimit())
4504                                 netdev_warn(dev, "Rx ERROR. status = %08x\n",
4505                                             status);
4506                         dev->stats.rx_errors++;
4507                         if (status & (RxRWT | RxRUNT))
4508                                 dev->stats.rx_length_errors++;
4509                         if (status & RxCRC)
4510                                 dev->stats.rx_crc_errors++;
4511
4512                         if (!(dev->features & NETIF_F_RXALL))
4513                                 goto release_descriptor;
4514                         else if (status & RxRWT || !(status & (RxRUNT | RxCRC)))
4515                                 goto release_descriptor;
4516                 }
4517
4518                 pkt_size = status & GENMASK(13, 0);
4519                 if (likely(!(dev->features & NETIF_F_RXFCS)))
4520                         pkt_size -= ETH_FCS_LEN;
4521
4522                 /* The driver does not support incoming fragmented frames.
4523                  * They are seen as a symptom of over-mtu sized frames.
4524                  */
4525                 if (unlikely(rtl8169_fragmented_frame(status))) {
4526                         dev->stats.rx_dropped++;
4527                         dev->stats.rx_length_errors++;
4528                         goto release_descriptor;
4529                 }
4530
4531                 skb = napi_alloc_skb(&tp->napi, pkt_size);
4532                 if (unlikely(!skb)) {
4533                         dev->stats.rx_dropped++;
4534                         goto release_descriptor;
4535                 }
4536
4537                 addr = le64_to_cpu(desc->addr);
4538                 rx_buf = page_address(tp->Rx_databuff[entry]);
4539
4540                 dma_sync_single_for_cpu(d, addr, pkt_size, DMA_FROM_DEVICE);
4541                 prefetch(rx_buf);
4542                 skb_copy_to_linear_data(skb, rx_buf, pkt_size);
4543                 skb->tail += pkt_size;
4544                 skb->len = pkt_size;
4545                 dma_sync_single_for_device(d, addr, pkt_size, DMA_FROM_DEVICE);
4546
4547                 rtl8169_rx_csum(skb, status);
4548                 skb->protocol = eth_type_trans(skb, dev);
4549
4550                 rtl8169_rx_vlan_tag(desc, skb);
4551
4552                 if (skb->pkt_type == PACKET_MULTICAST)
4553                         dev->stats.multicast++;
4554
4555                 napi_gro_receive(&tp->napi, skb);
4556
4557                 dev_sw_netstats_rx_add(dev, pkt_size);
4558 release_descriptor:
4559                 rtl8169_mark_to_asic(desc);
4560         }
4561
4562         return count;
4563 }
4564
4565 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
4566 {
4567         struct rtl8169_private *tp = dev_instance;
4568         u32 status = rtl_get_events(tp);
4569
4570         if ((status & 0xffff) == 0xffff || !(status & tp->irq_mask))
4571                 return IRQ_NONE;
4572
4573         if (unlikely(status & SYSErr)) {
4574                 rtl8169_pcierr_interrupt(tp->dev);
4575                 goto out;
4576         }
4577
4578         if (status & LinkChg)
4579                 phy_mac_interrupt(tp->phydev);
4580
4581         if (unlikely(status & RxFIFOOver &&
4582             tp->mac_version == RTL_GIGA_MAC_VER_11)) {
4583                 netif_stop_queue(tp->dev);
4584                 rtl_schedule_task(tp, RTL_FLAG_TASK_RESET_PENDING);
4585         }
4586
4587         if (napi_schedule_prep(&tp->napi)) {
4588                 rtl_irq_disable(tp);
4589                 __napi_schedule(&tp->napi);
4590         }
4591 out:
4592         rtl_ack_events(tp, status);
4593
4594         return IRQ_HANDLED;
4595 }
4596
4597 static void rtl_task(struct work_struct *work)
4598 {
4599         struct rtl8169_private *tp =
4600                 container_of(work, struct rtl8169_private, wk.work);
4601
4602         rtnl_lock();
4603
4604         if (!netif_running(tp->dev) ||
4605             !test_bit(RTL_FLAG_TASK_ENABLED, tp->wk.flags))
4606                 goto out_unlock;
4607
4608         if (test_and_clear_bit(RTL_FLAG_TASK_RESET_PENDING, tp->wk.flags)) {
4609                 rtl_reset_work(tp);
4610                 netif_wake_queue(tp->dev);
4611         }
4612 out_unlock:
4613         rtnl_unlock();
4614 }
4615
4616 static int rtl8169_poll(struct napi_struct *napi, int budget)
4617 {
4618         struct rtl8169_private *tp = container_of(napi, struct rtl8169_private, napi);
4619         struct net_device *dev = tp->dev;
4620         int work_done;
4621
4622         rtl_tx(dev, tp, budget);
4623
4624         work_done = rtl_rx(dev, tp, budget);
4625
4626         if (work_done < budget && napi_complete_done(napi, work_done))
4627                 rtl_irq_enable(tp);
4628
4629         return work_done;
4630 }
4631
4632 static void r8169_phylink_handler(struct net_device *ndev)
4633 {
4634         struct rtl8169_private *tp = netdev_priv(ndev);
4635
4636         if (netif_carrier_ok(ndev)) {
4637                 rtl_link_chg_patch(tp);
4638                 pm_request_resume(&tp->pci_dev->dev);
4639         } else {
4640                 pm_runtime_idle(&tp->pci_dev->dev);
4641         }
4642
4643         if (net_ratelimit())
4644                 phy_print_status(tp->phydev);
4645 }
4646
4647 static int r8169_phy_connect(struct rtl8169_private *tp)
4648 {
4649         struct phy_device *phydev = tp->phydev;
4650         phy_interface_t phy_mode;
4651         int ret;
4652
4653         phy_mode = tp->supports_gmii ? PHY_INTERFACE_MODE_GMII :
4654                    PHY_INTERFACE_MODE_MII;
4655
4656         ret = phy_connect_direct(tp->dev, phydev, r8169_phylink_handler,
4657                                  phy_mode);
4658         if (ret)
4659                 return ret;
4660
4661         if (!tp->supports_gmii)
4662                 phy_set_max_speed(phydev, SPEED_100);
4663
4664         phy_attached_info(phydev);
4665
4666         return 0;
4667 }
4668
4669 static void rtl8169_down(struct rtl8169_private *tp)
4670 {
4671         /* Clear all task flags */
4672         bitmap_zero(tp->wk.flags, RTL_FLAG_MAX);
4673
4674         phy_stop(tp->phydev);
4675
4676         rtl8169_update_counters(tp);
4677
4678         pci_clear_master(tp->pci_dev);
4679         rtl_pci_commit(tp);
4680
4681         rtl8169_cleanup(tp, true);
4682
4683         rtl_prepare_power_down(tp);
4684 }
4685
4686 static void rtl8169_up(struct rtl8169_private *tp)
4687 {
4688         pci_set_master(tp->pci_dev);
4689         phy_init_hw(tp->phydev);
4690         phy_resume(tp->phydev);
4691         rtl8169_init_phy(tp);
4692         napi_enable(&tp->napi);
4693         set_bit(RTL_FLAG_TASK_ENABLED, tp->wk.flags);
4694         rtl_reset_work(tp);
4695
4696         phy_start(tp->phydev);
4697 }
4698
4699 static int rtl8169_close(struct net_device *dev)
4700 {
4701         struct rtl8169_private *tp = netdev_priv(dev);
4702         struct pci_dev *pdev = tp->pci_dev;
4703
4704         pm_runtime_get_sync(&pdev->dev);
4705
4706         netif_stop_queue(dev);
4707         rtl8169_down(tp);
4708         rtl8169_rx_clear(tp);
4709
4710         cancel_work_sync(&tp->wk.work);
4711
4712         free_irq(pci_irq_vector(pdev, 0), tp);
4713
4714         phy_disconnect(tp->phydev);
4715
4716         dma_free_coherent(&pdev->dev, R8169_RX_RING_BYTES, tp->RxDescArray,
4717                           tp->RxPhyAddr);
4718         dma_free_coherent(&pdev->dev, R8169_TX_RING_BYTES, tp->TxDescArray,
4719                           tp->TxPhyAddr);
4720         tp->TxDescArray = NULL;
4721         tp->RxDescArray = NULL;
4722
4723         pm_runtime_put_sync(&pdev->dev);
4724
4725         return 0;
4726 }
4727
4728 #ifdef CONFIG_NET_POLL_CONTROLLER
4729 static void rtl8169_netpoll(struct net_device *dev)
4730 {
4731         struct rtl8169_private *tp = netdev_priv(dev);
4732
4733         rtl8169_interrupt(pci_irq_vector(tp->pci_dev, 0), tp);
4734 }
4735 #endif
4736
4737 static int rtl_open(struct net_device *dev)
4738 {
4739         struct rtl8169_private *tp = netdev_priv(dev);
4740         struct pci_dev *pdev = tp->pci_dev;
4741         unsigned long irqflags;
4742         int retval = -ENOMEM;
4743
4744         pm_runtime_get_sync(&pdev->dev);
4745
4746         /*
4747          * Rx and Tx descriptors needs 256 bytes alignment.
4748          * dma_alloc_coherent provides more.
4749          */
4750         tp->TxDescArray = dma_alloc_coherent(&pdev->dev, R8169_TX_RING_BYTES,
4751                                              &tp->TxPhyAddr, GFP_KERNEL);
4752         if (!tp->TxDescArray)
4753                 goto out;
4754
4755         tp->RxDescArray = dma_alloc_coherent(&pdev->dev, R8169_RX_RING_BYTES,
4756                                              &tp->RxPhyAddr, GFP_KERNEL);
4757         if (!tp->RxDescArray)
4758                 goto err_free_tx_0;
4759
4760         retval = rtl8169_init_ring(tp);
4761         if (retval < 0)
4762                 goto err_free_rx_1;
4763
4764         rtl_request_firmware(tp);
4765
4766         irqflags = pci_dev_msi_enabled(pdev) ? IRQF_NO_THREAD : IRQF_SHARED;
4767         retval = request_irq(pci_irq_vector(pdev, 0), rtl8169_interrupt,
4768                              irqflags, dev->name, tp);
4769         if (retval < 0)
4770                 goto err_release_fw_2;
4771
4772         retval = r8169_phy_connect(tp);
4773         if (retval)
4774                 goto err_free_irq;
4775
4776         rtl8169_up(tp);
4777         rtl8169_init_counter_offsets(tp);
4778         netif_start_queue(dev);
4779 out:
4780         pm_runtime_put_sync(&pdev->dev);
4781
4782         return retval;
4783
4784 err_free_irq:
4785         free_irq(pci_irq_vector(pdev, 0), tp);
4786 err_release_fw_2:
4787         rtl_release_firmware(tp);
4788         rtl8169_rx_clear(tp);
4789 err_free_rx_1:
4790         dma_free_coherent(&pdev->dev, R8169_RX_RING_BYTES, tp->RxDescArray,
4791                           tp->RxPhyAddr);
4792         tp->RxDescArray = NULL;
4793 err_free_tx_0:
4794         dma_free_coherent(&pdev->dev, R8169_TX_RING_BYTES, tp->TxDescArray,
4795                           tp->TxPhyAddr);
4796         tp->TxDescArray = NULL;
4797         goto out;
4798 }
4799
4800 static void
4801 rtl8169_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
4802 {
4803         struct rtl8169_private *tp = netdev_priv(dev);
4804         struct pci_dev *pdev = tp->pci_dev;
4805         struct rtl8169_counters *counters = tp->counters;
4806
4807         pm_runtime_get_noresume(&pdev->dev);
4808
4809         netdev_stats_to_stats64(stats, &dev->stats);
4810         dev_fetch_sw_netstats(stats, dev->tstats);
4811
4812         /*
4813          * Fetch additional counter values missing in stats collected by driver
4814          * from tally counters.
4815          */
4816         if (pm_runtime_active(&pdev->dev))
4817                 rtl8169_update_counters(tp);
4818
4819         /*
4820          * Subtract values fetched during initalization.
4821          * See rtl8169_init_counter_offsets for a description why we do that.
4822          */
4823         stats->tx_errors = le64_to_cpu(counters->tx_errors) -
4824                 le64_to_cpu(tp->tc_offset.tx_errors);
4825         stats->collisions = le32_to_cpu(counters->tx_multi_collision) -
4826                 le32_to_cpu(tp->tc_offset.tx_multi_collision);
4827         stats->tx_aborted_errors = le16_to_cpu(counters->tx_aborted) -
4828                 le16_to_cpu(tp->tc_offset.tx_aborted);
4829         stats->rx_missed_errors = le16_to_cpu(counters->rx_missed) -
4830                 le16_to_cpu(tp->tc_offset.rx_missed);
4831
4832         pm_runtime_put_noidle(&pdev->dev);
4833 }
4834
4835 static void rtl8169_net_suspend(struct rtl8169_private *tp)
4836 {
4837         netif_device_detach(tp->dev);
4838
4839         if (netif_running(tp->dev))
4840                 rtl8169_down(tp);
4841 }
4842
4843 #ifdef CONFIG_PM
4844
4845 static int rtl8169_runtime_resume(struct device *dev)
4846 {
4847         struct rtl8169_private *tp = dev_get_drvdata(dev);
4848
4849         rtl_rar_set(tp, tp->dev->dev_addr);
4850         __rtl8169_set_wol(tp, tp->saved_wolopts);
4851
4852         if (tp->TxDescArray)
4853                 rtl8169_up(tp);
4854
4855         netif_device_attach(tp->dev);
4856
4857         return 0;
4858 }
4859
4860 static int __maybe_unused rtl8169_suspend(struct device *device)
4861 {
4862         struct rtl8169_private *tp = dev_get_drvdata(device);
4863
4864         rtnl_lock();
4865         rtl8169_net_suspend(tp);
4866         if (!device_may_wakeup(tp_to_dev(tp)))
4867                 clk_disable_unprepare(tp->clk);
4868         rtnl_unlock();
4869
4870         return 0;
4871 }
4872
4873 static int __maybe_unused rtl8169_resume(struct device *device)
4874 {
4875         struct rtl8169_private *tp = dev_get_drvdata(device);
4876
4877         if (!device_may_wakeup(tp_to_dev(tp)))
4878                 clk_prepare_enable(tp->clk);
4879
4880         /* Reportedly at least Asus X453MA truncates packets otherwise */
4881         if (tp->mac_version == RTL_GIGA_MAC_VER_37)
4882                 rtl_init_rxcfg(tp);
4883
4884         return rtl8169_runtime_resume(device);
4885 }
4886
4887 static int rtl8169_runtime_suspend(struct device *device)
4888 {
4889         struct rtl8169_private *tp = dev_get_drvdata(device);
4890
4891         if (!tp->TxDescArray) {
4892                 netif_device_detach(tp->dev);
4893                 return 0;
4894         }
4895
4896         rtnl_lock();
4897         __rtl8169_set_wol(tp, WAKE_PHY);
4898         rtl8169_net_suspend(tp);
4899         rtnl_unlock();
4900
4901         return 0;
4902 }
4903
4904 static int rtl8169_runtime_idle(struct device *device)
4905 {
4906         struct rtl8169_private *tp = dev_get_drvdata(device);
4907
4908         if (!netif_running(tp->dev) || !netif_carrier_ok(tp->dev))
4909                 pm_schedule_suspend(device, 10000);
4910
4911         return -EBUSY;
4912 }
4913
4914 static const struct dev_pm_ops rtl8169_pm_ops = {
4915         SET_SYSTEM_SLEEP_PM_OPS(rtl8169_suspend, rtl8169_resume)
4916         SET_RUNTIME_PM_OPS(rtl8169_runtime_suspend, rtl8169_runtime_resume,
4917                            rtl8169_runtime_idle)
4918 };
4919
4920 #endif /* CONFIG_PM */
4921
4922 static void rtl_wol_shutdown_quirk(struct rtl8169_private *tp)
4923 {
4924         /* WoL fails with 8168b when the receiver is disabled. */
4925         switch (tp->mac_version) {
4926         case RTL_GIGA_MAC_VER_11:
4927         case RTL_GIGA_MAC_VER_12:
4928         case RTL_GIGA_MAC_VER_17:
4929                 pci_clear_master(tp->pci_dev);
4930
4931                 RTL_W8(tp, ChipCmd, CmdRxEnb);
4932                 rtl_pci_commit(tp);
4933                 break;
4934         default:
4935                 break;
4936         }
4937 }
4938
4939 static void rtl_shutdown(struct pci_dev *pdev)
4940 {
4941         struct rtl8169_private *tp = pci_get_drvdata(pdev);
4942
4943         rtnl_lock();
4944         rtl8169_net_suspend(tp);
4945         rtnl_unlock();
4946
4947         /* Restore original MAC address */
4948         rtl_rar_set(tp, tp->dev->perm_addr);
4949
4950         if (system_state == SYSTEM_POWER_OFF) {
4951                 if (tp->saved_wolopts)
4952                         rtl_wol_shutdown_quirk(tp);
4953
4954                 pci_wake_from_d3(pdev, tp->saved_wolopts);
4955                 pci_set_power_state(pdev, PCI_D3hot);
4956         }
4957 }
4958
4959 static void rtl_remove_one(struct pci_dev *pdev)
4960 {
4961         struct rtl8169_private *tp = pci_get_drvdata(pdev);
4962
4963         if (pci_dev_run_wake(pdev))
4964                 pm_runtime_get_noresume(&pdev->dev);
4965
4966         unregister_netdev(tp->dev);
4967
4968         if (tp->dash_type != RTL_DASH_NONE)
4969                 rtl8168_driver_stop(tp);
4970
4971         rtl_release_firmware(tp);
4972
4973         /* restore original MAC address */
4974         rtl_rar_set(tp, tp->dev->perm_addr);
4975 }
4976
4977 static const struct net_device_ops rtl_netdev_ops = {
4978         .ndo_open               = rtl_open,
4979         .ndo_stop               = rtl8169_close,
4980         .ndo_get_stats64        = rtl8169_get_stats64,
4981         .ndo_start_xmit         = rtl8169_start_xmit,
4982         .ndo_features_check     = rtl8169_features_check,
4983         .ndo_tx_timeout         = rtl8169_tx_timeout,
4984         .ndo_validate_addr      = eth_validate_addr,
4985         .ndo_change_mtu         = rtl8169_change_mtu,
4986         .ndo_fix_features       = rtl8169_fix_features,
4987         .ndo_set_features       = rtl8169_set_features,
4988         .ndo_set_mac_address    = rtl_set_mac_address,
4989         .ndo_eth_ioctl          = phy_do_ioctl_running,
4990         .ndo_set_rx_mode        = rtl_set_rx_mode,
4991 #ifdef CONFIG_NET_POLL_CONTROLLER
4992         .ndo_poll_controller    = rtl8169_netpoll,
4993 #endif
4994
4995 };
4996
4997 static void rtl_set_irq_mask(struct rtl8169_private *tp)
4998 {
4999         tp->irq_mask = RxOK | RxErr | TxOK | TxErr | LinkChg;
5000
5001         if (tp->mac_version <= RTL_GIGA_MAC_VER_06)
5002                 tp->irq_mask |= SYSErr | RxOverflow | RxFIFOOver;
5003         else if (tp->mac_version == RTL_GIGA_MAC_VER_11)
5004                 /* special workaround needed */
5005                 tp->irq_mask |= RxFIFOOver;
5006         else
5007                 tp->irq_mask |= RxOverflow;
5008 }
5009
5010 static int rtl_alloc_irq(struct rtl8169_private *tp)
5011 {
5012         unsigned int flags;
5013
5014         switch (tp->mac_version) {
5015         case RTL_GIGA_MAC_VER_02 ... RTL_GIGA_MAC_VER_06:
5016                 rtl_unlock_config_regs(tp);
5017                 RTL_W8(tp, Config2, RTL_R8(tp, Config2) & ~MSIEnable);
5018                 rtl_lock_config_regs(tp);
5019                 fallthrough;
5020         case RTL_GIGA_MAC_VER_07 ... RTL_GIGA_MAC_VER_17:
5021                 flags = PCI_IRQ_LEGACY;
5022                 break;
5023         default:
5024                 flags = PCI_IRQ_ALL_TYPES;
5025                 break;
5026         }
5027
5028         return pci_alloc_irq_vectors(tp->pci_dev, 1, 1, flags);
5029 }
5030
5031 static void rtl_read_mac_address(struct rtl8169_private *tp,
5032                                  u8 mac_addr[ETH_ALEN])
5033 {
5034         /* Get MAC address */
5035         if (rtl_is_8168evl_up(tp) && tp->mac_version != RTL_GIGA_MAC_VER_34) {
5036                 u32 value;
5037
5038                 value = rtl_eri_read(tp, 0xe0);
5039                 put_unaligned_le32(value, mac_addr);
5040                 value = rtl_eri_read(tp, 0xe4);
5041                 put_unaligned_le16(value, mac_addr + 4);
5042         } else if (rtl_is_8125(tp)) {
5043                 rtl_read_mac_from_reg(tp, mac_addr, MAC0_BKP);
5044         }
5045 }
5046
5047 DECLARE_RTL_COND(rtl_link_list_ready_cond)
5048 {
5049         return RTL_R8(tp, MCU) & LINK_LIST_RDY;
5050 }
5051
5052 static void r8168g_wait_ll_share_fifo_ready(struct rtl8169_private *tp)
5053 {
5054         rtl_loop_wait_high(tp, &rtl_link_list_ready_cond, 100, 42);
5055 }
5056
5057 static int r8169_mdio_read_reg(struct mii_bus *mii_bus, int phyaddr, int phyreg)
5058 {
5059         struct rtl8169_private *tp = mii_bus->priv;
5060
5061         if (phyaddr > 0)
5062                 return -ENODEV;
5063
5064         return rtl_readphy(tp, phyreg);
5065 }
5066
5067 static int r8169_mdio_write_reg(struct mii_bus *mii_bus, int phyaddr,
5068                                 int phyreg, u16 val)
5069 {
5070         struct rtl8169_private *tp = mii_bus->priv;
5071
5072         if (phyaddr > 0)
5073                 return -ENODEV;
5074
5075         rtl_writephy(tp, phyreg, val);
5076
5077         return 0;
5078 }
5079
5080 static int r8169_mdio_register(struct rtl8169_private *tp)
5081 {
5082         struct pci_dev *pdev = tp->pci_dev;
5083         struct mii_bus *new_bus;
5084         int ret;
5085
5086         new_bus = devm_mdiobus_alloc(&pdev->dev);
5087         if (!new_bus)
5088                 return -ENOMEM;
5089
5090         new_bus->name = "r8169";
5091         new_bus->priv = tp;
5092         new_bus->parent = &pdev->dev;
5093         new_bus->irq[0] = PHY_MAC_INTERRUPT;
5094         snprintf(new_bus->id, MII_BUS_ID_SIZE, "r8169-%x-%x",
5095                  pci_domain_nr(pdev->bus), pci_dev_id(pdev));
5096
5097         new_bus->read = r8169_mdio_read_reg;
5098         new_bus->write = r8169_mdio_write_reg;
5099
5100         ret = devm_mdiobus_register(&pdev->dev, new_bus);
5101         if (ret)
5102                 return ret;
5103
5104         tp->phydev = mdiobus_get_phy(new_bus, 0);
5105         if (!tp->phydev) {
5106                 return -ENODEV;
5107         } else if (!tp->phydev->drv) {
5108                 /* Most chip versions fail with the genphy driver.
5109                  * Therefore ensure that the dedicated PHY driver is loaded.
5110                  */
5111                 dev_err(&pdev->dev, "no dedicated PHY driver found for PHY ID 0x%08x, maybe realtek.ko needs to be added to initramfs?\n",
5112                         tp->phydev->phy_id);
5113                 return -EUNATCH;
5114         }
5115
5116         tp->phydev->mac_managed_pm = 1;
5117
5118         phy_support_asym_pause(tp->phydev);
5119
5120         /* PHY will be woken up in rtl_open() */
5121         phy_suspend(tp->phydev);
5122
5123         return 0;
5124 }
5125
5126 static void rtl_hw_init_8168g(struct rtl8169_private *tp)
5127 {
5128         rtl_enable_rxdvgate(tp);
5129
5130         RTL_W8(tp, ChipCmd, RTL_R8(tp, ChipCmd) & ~(CmdTxEnb | CmdRxEnb));
5131         msleep(1);
5132         RTL_W8(tp, MCU, RTL_R8(tp, MCU) & ~NOW_IS_OOB);
5133
5134         r8168_mac_ocp_modify(tp, 0xe8de, BIT(14), 0);
5135         r8168g_wait_ll_share_fifo_ready(tp);
5136
5137         r8168_mac_ocp_modify(tp, 0xe8de, 0, BIT(15));
5138         r8168g_wait_ll_share_fifo_ready(tp);
5139 }
5140
5141 static void rtl_hw_init_8125(struct rtl8169_private *tp)
5142 {
5143         rtl_enable_rxdvgate(tp);
5144
5145         RTL_W8(tp, ChipCmd, RTL_R8(tp, ChipCmd) & ~(CmdTxEnb | CmdRxEnb));
5146         msleep(1);
5147         RTL_W8(tp, MCU, RTL_R8(tp, MCU) & ~NOW_IS_OOB);
5148
5149         r8168_mac_ocp_modify(tp, 0xe8de, BIT(14), 0);
5150         r8168g_wait_ll_share_fifo_ready(tp);
5151
5152         r8168_mac_ocp_write(tp, 0xc0aa, 0x07d0);
5153         r8168_mac_ocp_write(tp, 0xc0a6, 0x0150);
5154         r8168_mac_ocp_write(tp, 0xc01e, 0x5555);
5155         r8168g_wait_ll_share_fifo_ready(tp);
5156 }
5157
5158 static void rtl_hw_initialize(struct rtl8169_private *tp)
5159 {
5160         switch (tp->mac_version) {
5161         case RTL_GIGA_MAC_VER_49 ... RTL_GIGA_MAC_VER_53:
5162                 rtl8168ep_stop_cmac(tp);
5163                 fallthrough;
5164         case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_48:
5165                 rtl_hw_init_8168g(tp);
5166                 break;
5167         case RTL_GIGA_MAC_VER_60 ... RTL_GIGA_MAC_VER_63:
5168                 rtl_hw_init_8125(tp);
5169                 break;
5170         default:
5171                 break;
5172         }
5173 }
5174
5175 static int rtl_jumbo_max(struct rtl8169_private *tp)
5176 {
5177         /* Non-GBit versions don't support jumbo frames */
5178         if (!tp->supports_gmii)
5179                 return 0;
5180
5181         switch (tp->mac_version) {
5182         /* RTL8169 */
5183         case RTL_GIGA_MAC_VER_02 ... RTL_GIGA_MAC_VER_06:
5184                 return JUMBO_7K;
5185         /* RTL8168b */
5186         case RTL_GIGA_MAC_VER_11:
5187         case RTL_GIGA_MAC_VER_12:
5188         case RTL_GIGA_MAC_VER_17:
5189                 return JUMBO_4K;
5190         /* RTL8168c */
5191         case RTL_GIGA_MAC_VER_18 ... RTL_GIGA_MAC_VER_24:
5192                 return JUMBO_6K;
5193         default:
5194                 return JUMBO_9K;
5195         }
5196 }
5197
5198 static void rtl_disable_clk(void *data)
5199 {
5200         clk_disable_unprepare(data);
5201 }
5202
5203 static int rtl_get_ether_clk(struct rtl8169_private *tp)
5204 {
5205         struct device *d = tp_to_dev(tp);
5206         struct clk *clk;
5207         int rc;
5208
5209         clk = devm_clk_get(d, "ether_clk");
5210         if (IS_ERR(clk)) {
5211                 rc = PTR_ERR(clk);
5212                 if (rc == -ENOENT)
5213                         /* clk-core allows NULL (for suspend / resume) */
5214                         rc = 0;
5215                 else
5216                         dev_err_probe(d, rc, "failed to get clk\n");
5217         } else {
5218                 tp->clk = clk;
5219                 rc = clk_prepare_enable(clk);
5220                 if (rc)
5221                         dev_err(d, "failed to enable clk: %d\n", rc);
5222                 else
5223                         rc = devm_add_action_or_reset(d, rtl_disable_clk, clk);
5224         }
5225
5226         return rc;
5227 }
5228
5229 static void rtl_init_mac_address(struct rtl8169_private *tp)
5230 {
5231         struct net_device *dev = tp->dev;
5232         u8 *mac_addr = dev->dev_addr;
5233         int rc;
5234
5235         rc = eth_platform_get_mac_address(tp_to_dev(tp), mac_addr);
5236         if (!rc)
5237                 goto done;
5238
5239         rtl_read_mac_address(tp, mac_addr);
5240         if (is_valid_ether_addr(mac_addr))
5241                 goto done;
5242
5243         rtl_read_mac_from_reg(tp, mac_addr, MAC0);
5244         if (is_valid_ether_addr(mac_addr))
5245                 goto done;
5246
5247         eth_hw_addr_random(dev);
5248         dev_warn(tp_to_dev(tp), "can't read MAC address, setting random one\n");
5249 done:
5250         rtl_rar_set(tp, mac_addr);
5251 }
5252
5253 static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
5254 {
5255         struct rtl8169_private *tp;
5256         int jumbo_max, region, rc;
5257         enum mac_version chipset;
5258         struct net_device *dev;
5259         u16 xid;
5260
5261         dev = devm_alloc_etherdev(&pdev->dev, sizeof (*tp));
5262         if (!dev)
5263                 return -ENOMEM;
5264
5265         SET_NETDEV_DEV(dev, &pdev->dev);
5266         dev->netdev_ops = &rtl_netdev_ops;
5267         tp = netdev_priv(dev);
5268         tp->dev = dev;
5269         tp->pci_dev = pdev;
5270         tp->supports_gmii = ent->driver_data == RTL_CFG_NO_GBIT ? 0 : 1;
5271         tp->eee_adv = -1;
5272         tp->ocp_base = OCP_STD_PHY_BASE;
5273
5274         dev->tstats = devm_netdev_alloc_pcpu_stats(&pdev->dev,
5275                                                    struct pcpu_sw_netstats);
5276         if (!dev->tstats)
5277                 return -ENOMEM;
5278
5279         /* Get the *optional* external "ether_clk" used on some boards */
5280         rc = rtl_get_ether_clk(tp);
5281         if (rc)
5282                 return rc;
5283
5284         /* Disable ASPM L1 as that cause random device stop working
5285          * problems as well as full system hangs for some PCIe devices users.
5286          */
5287         rc = pci_disable_link_state(pdev, PCIE_LINK_STATE_L1);
5288         tp->aspm_manageable = !rc;
5289
5290         /* enable device (incl. PCI PM wakeup and hotplug setup) */
5291         rc = pcim_enable_device(pdev);
5292         if (rc < 0) {
5293                 dev_err(&pdev->dev, "enable failure\n");
5294                 return rc;
5295         }
5296
5297         if (pcim_set_mwi(pdev) < 0)
5298                 dev_info(&pdev->dev, "Mem-Wr-Inval unavailable\n");
5299
5300         /* use first MMIO region */
5301         region = ffs(pci_select_bars(pdev, IORESOURCE_MEM)) - 1;
5302         if (region < 0) {
5303                 dev_err(&pdev->dev, "no MMIO resource found\n");
5304                 return -ENODEV;
5305         }
5306
5307         /* check for weird/broken PCI region reporting */
5308         if (pci_resource_len(pdev, region) < R8169_REGS_SIZE) {
5309                 dev_err(&pdev->dev, "Invalid PCI region size(s), aborting\n");
5310                 return -ENODEV;
5311         }
5312
5313         rc = pcim_iomap_regions(pdev, BIT(region), KBUILD_MODNAME);
5314         if (rc < 0) {
5315                 dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
5316                 return rc;
5317         }
5318
5319         tp->mmio_addr = pcim_iomap_table(pdev)[region];
5320
5321         xid = (RTL_R32(tp, TxConfig) >> 20) & 0xfcf;
5322
5323         /* Identify chip attached to board */
5324         chipset = rtl8169_get_mac_version(xid, tp->supports_gmii);
5325         if (chipset == RTL_GIGA_MAC_NONE) {
5326                 dev_err(&pdev->dev, "unknown chip XID %03x, contact r8169 maintainers (see MAINTAINERS file)\n", xid);
5327                 return -ENODEV;
5328         }
5329
5330         tp->mac_version = chipset;
5331
5332         tp->dash_type = rtl_check_dash(tp);
5333
5334         tp->cp_cmd = RTL_R16(tp, CPlusCmd) & CPCMD_MASK;
5335
5336         if (sizeof(dma_addr_t) > 4 && tp->mac_version >= RTL_GIGA_MAC_VER_18 &&
5337             !dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)))
5338                 dev->features |= NETIF_F_HIGHDMA;
5339
5340         rtl_init_rxcfg(tp);
5341
5342         rtl8169_irq_mask_and_ack(tp);
5343
5344         rtl_hw_initialize(tp);
5345
5346         rtl_hw_reset(tp);
5347
5348         rc = rtl_alloc_irq(tp);
5349         if (rc < 0) {
5350                 dev_err(&pdev->dev, "Can't allocate interrupt\n");
5351                 return rc;
5352         }
5353
5354         INIT_WORK(&tp->wk.work, rtl_task);
5355
5356         rtl_init_mac_address(tp);
5357
5358         dev->ethtool_ops = &rtl8169_ethtool_ops;
5359
5360         netif_napi_add(dev, &tp->napi, rtl8169_poll, NAPI_POLL_WEIGHT);
5361
5362         dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
5363                            NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
5364         dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO;
5365         dev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
5366
5367         /*
5368          * Pretend we are using VLANs; This bypasses a nasty bug where
5369          * Interrupts stop flowing on high load on 8110SCd controllers.
5370          */
5371         if (tp->mac_version == RTL_GIGA_MAC_VER_05)
5372                 /* Disallow toggling */
5373                 dev->hw_features &= ~NETIF_F_HW_VLAN_CTAG_RX;
5374
5375         if (rtl_chip_supports_csum_v2(tp))
5376                 dev->hw_features |= NETIF_F_IPV6_CSUM;
5377
5378         dev->features |= dev->hw_features;
5379
5380         /* There has been a number of reports that using SG/TSO results in
5381          * tx timeouts. However for a lot of people SG/TSO works fine.
5382          * Therefore disable both features by default, but allow users to
5383          * enable them. Use at own risk!
5384          */
5385         if (rtl_chip_supports_csum_v2(tp)) {
5386                 dev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6;
5387                 dev->gso_max_size = RTL_GSO_MAX_SIZE_V2;
5388                 dev->gso_max_segs = RTL_GSO_MAX_SEGS_V2;
5389         } else {
5390                 dev->hw_features |= NETIF_F_SG | NETIF_F_TSO;
5391                 dev->gso_max_size = RTL_GSO_MAX_SIZE_V1;
5392                 dev->gso_max_segs = RTL_GSO_MAX_SEGS_V1;
5393         }
5394
5395         dev->hw_features |= NETIF_F_RXALL;
5396         dev->hw_features |= NETIF_F_RXFCS;
5397
5398         /* configure chip for default features */
5399         rtl8169_set_features(dev, dev->features);
5400
5401         rtl_set_d3_pll_down(tp, true);
5402
5403         jumbo_max = rtl_jumbo_max(tp);
5404         if (jumbo_max)
5405                 dev->max_mtu = jumbo_max;
5406
5407         rtl_set_irq_mask(tp);
5408
5409         tp->fw_name = rtl_chip_infos[chipset].fw_name;
5410
5411         tp->counters = dmam_alloc_coherent (&pdev->dev, sizeof(*tp->counters),
5412                                             &tp->counters_phys_addr,
5413                                             GFP_KERNEL);
5414         if (!tp->counters)
5415                 return -ENOMEM;
5416
5417         pci_set_drvdata(pdev, tp);
5418
5419         rc = r8169_mdio_register(tp);
5420         if (rc)
5421                 return rc;
5422
5423         rc = register_netdev(dev);
5424         if (rc)
5425                 return rc;
5426
5427         netdev_info(dev, "%s, %pM, XID %03x, IRQ %d\n",
5428                     rtl_chip_infos[chipset].name, dev->dev_addr, xid,
5429                     pci_irq_vector(pdev, 0));
5430
5431         if (jumbo_max)
5432                 netdev_info(dev, "jumbo features [frames: %d bytes, tx checksumming: %s]\n",
5433                             jumbo_max, tp->mac_version <= RTL_GIGA_MAC_VER_06 ?
5434                             "ok" : "ko");
5435
5436         if (tp->dash_type != RTL_DASH_NONE) {
5437                 netdev_info(dev, "DASH enabled\n");
5438                 rtl8168_driver_start(tp);
5439         }
5440
5441         if (pci_dev_run_wake(pdev))
5442                 pm_runtime_put_sync(&pdev->dev);
5443
5444         return 0;
5445 }
5446
5447 static struct pci_driver rtl8169_pci_driver = {
5448         .name           = KBUILD_MODNAME,
5449         .id_table       = rtl8169_pci_tbl,
5450         .probe          = rtl_init_one,
5451         .remove         = rtl_remove_one,
5452         .shutdown       = rtl_shutdown,
5453         .driver.pm      = pm_ptr(&rtl8169_pm_ops),
5454 };
5455
5456 module_pci_driver(rtl8169_pci_driver);