Ben Hutchings | afd4aea | 2009-11-29 15:15:25 +0000 | [diff] [blame^] | 1 | /**************************************************************************** |
| 2 | * Driver for Solarflare Solarstorm network controllers and boards |
| 3 | * Copyright 2009 Solarflare Communications Inc. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 as published |
| 7 | * by the Free Software Foundation, incorporated herein by reference. |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * Driver for PHY related operations via MCDI. |
| 12 | */ |
| 13 | |
| 14 | #include "efx.h" |
| 15 | #include "phy.h" |
| 16 | #include "mcdi.h" |
| 17 | #include "mcdi_pcol.h" |
| 18 | #include "mdio_10g.h" |
| 19 | |
| 20 | struct efx_mcdi_phy_cfg { |
| 21 | u32 flags; |
| 22 | u32 type; |
| 23 | u32 supported_cap; |
| 24 | u32 channel; |
| 25 | u32 port; |
| 26 | u32 stats_mask; |
| 27 | u8 name[20]; |
| 28 | u32 media; |
| 29 | u32 mmd_mask; |
| 30 | u8 revision[20]; |
| 31 | u32 forced_cap; |
| 32 | }; |
| 33 | |
| 34 | static int |
| 35 | efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_cfg *cfg) |
| 36 | { |
| 37 | u8 outbuf[MC_CMD_GET_PHY_CFG_OUT_LEN]; |
| 38 | size_t outlen; |
| 39 | int rc; |
| 40 | |
| 41 | BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_IN_LEN != 0); |
| 42 | BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_OUT_NAME_LEN != sizeof(cfg->name)); |
| 43 | |
| 44 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_CFG, NULL, 0, |
| 45 | outbuf, sizeof(outbuf), &outlen); |
| 46 | if (rc) |
| 47 | goto fail; |
| 48 | |
| 49 | if (outlen < MC_CMD_GET_PHY_CFG_OUT_LEN) { |
| 50 | rc = -EMSGSIZE; |
| 51 | goto fail; |
| 52 | } |
| 53 | |
| 54 | cfg->flags = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_FLAGS); |
| 55 | cfg->type = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_TYPE); |
| 56 | cfg->supported_cap = |
| 57 | MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_SUPPORTED_CAP); |
| 58 | cfg->channel = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_CHANNEL); |
| 59 | cfg->port = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_PRT); |
| 60 | cfg->stats_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_STATS_MASK); |
| 61 | memcpy(cfg->name, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_NAME), |
| 62 | sizeof(cfg->name)); |
| 63 | cfg->media = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MEDIA_TYPE); |
| 64 | cfg->mmd_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MMD_MASK); |
| 65 | memcpy(cfg->revision, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_REVISION), |
| 66 | sizeof(cfg->revision)); |
| 67 | |
| 68 | return 0; |
| 69 | |
| 70 | fail: |
| 71 | EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc); |
| 72 | return rc; |
| 73 | } |
| 74 | |
| 75 | static int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities, |
| 76 | u32 flags, u32 loopback_mode, |
| 77 | u32 loopback_speed) |
| 78 | { |
| 79 | u8 inbuf[MC_CMD_SET_LINK_IN_LEN]; |
| 80 | int rc; |
| 81 | |
| 82 | BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0); |
| 83 | |
| 84 | MCDI_SET_DWORD(inbuf, SET_LINK_IN_CAP, capabilities); |
| 85 | MCDI_SET_DWORD(inbuf, SET_LINK_IN_FLAGS, flags); |
| 86 | MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_MODE, loopback_mode); |
| 87 | MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_SPEED, loopback_speed); |
| 88 | |
| 89 | rc = efx_mcdi_rpc(efx, MC_CMD_SET_LINK, inbuf, sizeof(inbuf), |
| 90 | NULL, 0, NULL); |
| 91 | if (rc) |
| 92 | goto fail; |
| 93 | |
| 94 | return 0; |
| 95 | |
| 96 | fail: |
| 97 | EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc); |
| 98 | return rc; |
| 99 | } |
| 100 | |
| 101 | static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes) |
| 102 | { |
| 103 | u8 outbuf[MC_CMD_GET_LOOPBACK_MODES_OUT_LEN]; |
| 104 | size_t outlen; |
| 105 | int rc; |
| 106 | |
| 107 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_LOOPBACK_MODES, NULL, 0, |
| 108 | outbuf, sizeof(outbuf), &outlen); |
| 109 | if (rc) |
| 110 | goto fail; |
| 111 | |
| 112 | if (outlen < MC_CMD_GET_LOOPBACK_MODES_OUT_LEN) { |
| 113 | rc = -EMSGSIZE; |
| 114 | goto fail; |
| 115 | } |
| 116 | |
| 117 | *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_SUGGESTED); |
| 118 | |
| 119 | return 0; |
| 120 | |
| 121 | fail: |
| 122 | EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc); |
| 123 | return rc; |
| 124 | } |
| 125 | |
| 126 | int efx_mcdi_mdio_read(struct efx_nic *efx, unsigned int bus, |
| 127 | unsigned int prtad, unsigned int devad, u16 addr, |
| 128 | u16 *value_out, u32 *status_out) |
| 129 | { |
| 130 | u8 inbuf[MC_CMD_MDIO_READ_IN_LEN]; |
| 131 | u8 outbuf[MC_CMD_MDIO_READ_OUT_LEN]; |
| 132 | size_t outlen; |
| 133 | int rc; |
| 134 | |
| 135 | MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, bus); |
| 136 | MCDI_SET_DWORD(inbuf, MDIO_READ_IN_PRTAD, prtad); |
| 137 | MCDI_SET_DWORD(inbuf, MDIO_READ_IN_DEVAD, devad); |
| 138 | MCDI_SET_DWORD(inbuf, MDIO_READ_IN_ADDR, addr); |
| 139 | |
| 140 | rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_READ, inbuf, sizeof(inbuf), |
| 141 | outbuf, sizeof(outbuf), &outlen); |
| 142 | if (rc) |
| 143 | goto fail; |
| 144 | |
| 145 | *value_out = (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE); |
| 146 | *status_out = MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS); |
| 147 | return 0; |
| 148 | |
| 149 | fail: |
| 150 | EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc); |
| 151 | return rc; |
| 152 | } |
| 153 | |
| 154 | int efx_mcdi_mdio_write(struct efx_nic *efx, unsigned int bus, |
| 155 | unsigned int prtad, unsigned int devad, u16 addr, |
| 156 | u16 value, u32 *status_out) |
| 157 | { |
| 158 | u8 inbuf[MC_CMD_MDIO_WRITE_IN_LEN]; |
| 159 | u8 outbuf[MC_CMD_MDIO_WRITE_OUT_LEN]; |
| 160 | size_t outlen; |
| 161 | int rc; |
| 162 | |
| 163 | MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, bus); |
| 164 | MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad); |
| 165 | MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad); |
| 166 | MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr); |
| 167 | MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value); |
| 168 | |
| 169 | rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf), |
| 170 | outbuf, sizeof(outbuf), &outlen); |
| 171 | if (rc) |
| 172 | goto fail; |
| 173 | |
| 174 | *status_out = MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS); |
| 175 | return 0; |
| 176 | |
| 177 | fail: |
| 178 | EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc); |
| 179 | return rc; |
| 180 | } |
| 181 | |
| 182 | static u32 mcdi_to_ethtool_cap(u32 media, u32 cap) |
| 183 | { |
| 184 | u32 result = 0; |
| 185 | |
| 186 | switch (media) { |
| 187 | case MC_CMD_MEDIA_KX4: |
| 188 | result |= SUPPORTED_Backplane; |
| 189 | if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) |
| 190 | result |= SUPPORTED_1000baseKX_Full; |
| 191 | if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) |
| 192 | result |= SUPPORTED_10000baseKX4_Full; |
| 193 | break; |
| 194 | |
| 195 | case MC_CMD_MEDIA_XFP: |
| 196 | case MC_CMD_MEDIA_SFP_PLUS: |
| 197 | result |= SUPPORTED_FIBRE; |
| 198 | break; |
| 199 | |
| 200 | case MC_CMD_MEDIA_BASE_T: |
| 201 | result |= SUPPORTED_TP; |
| 202 | if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN)) |
| 203 | result |= SUPPORTED_10baseT_Half; |
| 204 | if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN)) |
| 205 | result |= SUPPORTED_10baseT_Full; |
| 206 | if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN)) |
| 207 | result |= SUPPORTED_100baseT_Half; |
| 208 | if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN)) |
| 209 | result |= SUPPORTED_100baseT_Full; |
| 210 | if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN)) |
| 211 | result |= SUPPORTED_1000baseT_Half; |
| 212 | if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) |
| 213 | result |= SUPPORTED_1000baseT_Full; |
| 214 | if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) |
| 215 | result |= SUPPORTED_10000baseT_Full; |
| 216 | break; |
| 217 | } |
| 218 | |
| 219 | if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) |
| 220 | result |= SUPPORTED_Pause; |
| 221 | if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) |
| 222 | result |= SUPPORTED_Asym_Pause; |
| 223 | if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) |
| 224 | result |= SUPPORTED_Autoneg; |
| 225 | |
| 226 | return result; |
| 227 | } |
| 228 | |
| 229 | static u32 ethtool_to_mcdi_cap(u32 cap) |
| 230 | { |
| 231 | u32 result = 0; |
| 232 | |
| 233 | if (cap & SUPPORTED_10baseT_Half) |
| 234 | result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN); |
| 235 | if (cap & SUPPORTED_10baseT_Full) |
| 236 | result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN); |
| 237 | if (cap & SUPPORTED_100baseT_Half) |
| 238 | result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN); |
| 239 | if (cap & SUPPORTED_100baseT_Full) |
| 240 | result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN); |
| 241 | if (cap & SUPPORTED_1000baseT_Half) |
| 242 | result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN); |
| 243 | if (cap & (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseKX_Full)) |
| 244 | result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN); |
| 245 | if (cap & (SUPPORTED_10000baseT_Full | SUPPORTED_10000baseKX4_Full)) |
| 246 | result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN); |
| 247 | if (cap & SUPPORTED_Pause) |
| 248 | result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN); |
| 249 | if (cap & SUPPORTED_Asym_Pause) |
| 250 | result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN); |
| 251 | if (cap & SUPPORTED_Autoneg) |
| 252 | result |= (1 << MC_CMD_PHY_CAP_AN_LBN); |
| 253 | |
| 254 | return result; |
| 255 | } |
| 256 | |
| 257 | static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx) |
| 258 | { |
| 259 | struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data; |
| 260 | enum efx_phy_mode mode, supported; |
| 261 | u32 flags; |
| 262 | |
| 263 | /* TODO: Advertise the capabilities supported by this PHY */ |
| 264 | supported = 0; |
| 265 | if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_TXDIS_LBN)) |
| 266 | supported |= PHY_MODE_TX_DISABLED; |
| 267 | if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_LOWPOWER_LBN)) |
| 268 | supported |= PHY_MODE_LOW_POWER; |
| 269 | if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_POWEROFF_LBN)) |
| 270 | supported |= PHY_MODE_OFF; |
| 271 | |
| 272 | mode = efx->phy_mode & supported; |
| 273 | |
| 274 | flags = 0; |
| 275 | if (mode & PHY_MODE_TX_DISABLED) |
| 276 | flags |= (1 << MC_CMD_SET_LINK_TXDIS_LBN); |
| 277 | if (mode & PHY_MODE_LOW_POWER) |
| 278 | flags |= (1 << MC_CMD_SET_LINK_LOWPOWER_LBN); |
| 279 | if (mode & PHY_MODE_OFF) |
| 280 | flags |= (1 << MC_CMD_SET_LINK_POWEROFF_LBN); |
| 281 | |
| 282 | return flags; |
| 283 | } |
| 284 | |
| 285 | static u32 mcdi_to_ethtool_media(u32 media) |
| 286 | { |
| 287 | switch (media) { |
| 288 | case MC_CMD_MEDIA_XAUI: |
| 289 | case MC_CMD_MEDIA_CX4: |
| 290 | case MC_CMD_MEDIA_KX4: |
| 291 | return PORT_OTHER; |
| 292 | |
| 293 | case MC_CMD_MEDIA_XFP: |
| 294 | case MC_CMD_MEDIA_SFP_PLUS: |
| 295 | return PORT_FIBRE; |
| 296 | |
| 297 | case MC_CMD_MEDIA_BASE_T: |
| 298 | return PORT_TP; |
| 299 | |
| 300 | default: |
| 301 | return PORT_OTHER; |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | static int efx_mcdi_phy_probe(struct efx_nic *efx) |
| 306 | { |
| 307 | struct efx_mcdi_phy_cfg *phy_cfg; |
| 308 | int rc; |
| 309 | |
| 310 | /* TODO: Move phy_data initialisation to |
| 311 | * phy_op->probe/remove, rather than init/fini */ |
| 312 | phy_cfg = kzalloc(sizeof(*phy_cfg), GFP_KERNEL); |
| 313 | if (phy_cfg == NULL) { |
| 314 | rc = -ENOMEM; |
| 315 | goto fail_alloc; |
| 316 | } |
| 317 | rc = efx_mcdi_get_phy_cfg(efx, phy_cfg); |
| 318 | if (rc != 0) |
| 319 | goto fail; |
| 320 | |
| 321 | efx->phy_type = phy_cfg->type; |
| 322 | |
| 323 | efx->mdio_bus = phy_cfg->channel; |
| 324 | efx->mdio.prtad = phy_cfg->port; |
| 325 | efx->mdio.mmds = phy_cfg->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22); |
| 326 | efx->mdio.mode_support = 0; |
| 327 | if (phy_cfg->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22)) |
| 328 | efx->mdio.mode_support |= MDIO_SUPPORTS_C22; |
| 329 | if (phy_cfg->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22)) |
| 330 | efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; |
| 331 | |
| 332 | /* Assert that we can map efx -> mcdi loopback modes */ |
| 333 | BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE); |
| 334 | BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA); |
| 335 | BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC); |
| 336 | BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII); |
| 337 | BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS); |
| 338 | BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI); |
| 339 | BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII); |
| 340 | BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII); |
| 341 | BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR); |
| 342 | BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI); |
| 343 | BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR); |
| 344 | BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR); |
| 345 | BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR); |
| 346 | BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR); |
| 347 | BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY); |
| 348 | BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS); |
| 349 | BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS); |
| 350 | BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD); |
| 351 | BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT); |
| 352 | BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS); |
| 353 | BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS); |
| 354 | BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR); |
| 355 | BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR); |
| 356 | BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS); |
| 357 | BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS); |
| 358 | BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR); |
| 359 | BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS); |
| 360 | |
| 361 | rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes); |
| 362 | if (rc != 0) |
| 363 | goto fail; |
| 364 | /* The MC indicates that LOOPBACK_NONE is a valid loopback mode, |
| 365 | * but by convention we don't */ |
| 366 | efx->loopback_modes &= ~(1 << LOOPBACK_NONE); |
| 367 | |
| 368 | kfree(phy_cfg); |
| 369 | |
| 370 | return 0; |
| 371 | |
| 372 | fail: |
| 373 | kfree(phy_cfg); |
| 374 | fail_alloc: |
| 375 | return rc; |
| 376 | } |
| 377 | |
| 378 | static int efx_mcdi_phy_init(struct efx_nic *efx) |
| 379 | { |
| 380 | struct efx_mcdi_phy_cfg *phy_data; |
| 381 | u8 outbuf[MC_CMD_GET_LINK_OUT_LEN]; |
| 382 | u32 caps; |
| 383 | int rc; |
| 384 | |
| 385 | phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL); |
| 386 | if (phy_data == NULL) |
| 387 | return -ENOMEM; |
| 388 | |
| 389 | rc = efx_mcdi_get_phy_cfg(efx, phy_data); |
| 390 | if (rc != 0) |
| 391 | goto fail; |
| 392 | |
| 393 | efx->phy_data = phy_data; |
| 394 | |
| 395 | BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); |
| 396 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, |
| 397 | outbuf, sizeof(outbuf), NULL); |
| 398 | if (rc) |
| 399 | goto fail; |
| 400 | |
| 401 | caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP); |
| 402 | if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN)) |
| 403 | efx->link_advertising = |
| 404 | mcdi_to_ethtool_cap(phy_data->media, caps); |
| 405 | else |
| 406 | phy_data->forced_cap = caps; |
| 407 | |
| 408 | return 0; |
| 409 | |
| 410 | fail: |
| 411 | kfree(phy_data); |
| 412 | return rc; |
| 413 | } |
| 414 | |
| 415 | int efx_mcdi_phy_reconfigure(struct efx_nic *efx) |
| 416 | { |
| 417 | struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data; |
| 418 | u32 caps = (efx->link_advertising ? |
| 419 | ethtool_to_mcdi_cap(efx->link_advertising) : |
| 420 | phy_cfg->forced_cap); |
| 421 | |
| 422 | return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), |
| 423 | efx->loopback_mode, 0); |
| 424 | } |
| 425 | |
| 426 | void efx_mcdi_phy_decode_link(struct efx_nic *efx, |
| 427 | struct efx_link_state *link_state, |
| 428 | u32 speed, u32 flags, u32 fcntl) |
| 429 | { |
| 430 | switch (fcntl) { |
| 431 | case MC_CMD_FCNTL_AUTO: |
| 432 | WARN_ON(1); /* This is not a link mode */ |
| 433 | link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX; |
| 434 | break; |
| 435 | case MC_CMD_FCNTL_BIDIR: |
| 436 | link_state->fc = EFX_FC_TX | EFX_FC_RX; |
| 437 | break; |
| 438 | case MC_CMD_FCNTL_RESPOND: |
| 439 | link_state->fc = EFX_FC_RX; |
| 440 | break; |
| 441 | default: |
| 442 | WARN_ON(1); |
| 443 | case MC_CMD_FCNTL_OFF: |
| 444 | link_state->fc = 0; |
| 445 | break; |
| 446 | } |
| 447 | |
| 448 | link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_LINK_UP_LBN)); |
| 449 | link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_FULL_DUPLEX_LBN)); |
| 450 | link_state->speed = speed; |
| 451 | } |
| 452 | |
| 453 | /* Verify that the forced flow control settings (!EFX_FC_AUTO) are |
| 454 | * supported by the link partner. Warn the user if this isn't the case |
| 455 | */ |
| 456 | void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa) |
| 457 | { |
| 458 | struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data; |
| 459 | u32 rmtadv; |
| 460 | |
| 461 | /* The link partner capabilities are only relevent if the |
| 462 | * link supports flow control autonegotiation */ |
| 463 | if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) |
| 464 | return; |
| 465 | |
| 466 | /* If flow control autoneg is supported and enabled, then fine */ |
| 467 | if (efx->wanted_fc & EFX_FC_AUTO) |
| 468 | return; |
| 469 | |
| 470 | rmtadv = 0; |
| 471 | if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) |
| 472 | rmtadv |= ADVERTISED_Pause; |
| 473 | if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) |
| 474 | rmtadv |= ADVERTISED_Asym_Pause; |
| 475 | |
| 476 | if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause) |
| 477 | EFX_ERR(efx, "warning: link partner doesn't support " |
| 478 | "pause frames"); |
| 479 | } |
| 480 | |
| 481 | static bool efx_mcdi_phy_poll(struct efx_nic *efx) |
| 482 | { |
| 483 | struct efx_link_state old_state = efx->link_state; |
| 484 | u8 outbuf[MC_CMD_GET_LINK_OUT_LEN]; |
| 485 | int rc; |
| 486 | |
| 487 | WARN_ON(!mutex_is_locked(&efx->mac_lock)); |
| 488 | |
| 489 | BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); |
| 490 | |
| 491 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, |
| 492 | outbuf, sizeof(outbuf), NULL); |
| 493 | if (rc) { |
| 494 | EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc); |
| 495 | efx->link_state.up = false; |
| 496 | } else { |
| 497 | efx_mcdi_phy_decode_link( |
| 498 | efx, &efx->link_state, |
| 499 | MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), |
| 500 | MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), |
| 501 | MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); |
| 502 | } |
| 503 | |
| 504 | return !efx_link_state_equal(&efx->link_state, &old_state); |
| 505 | } |
| 506 | |
| 507 | static void efx_mcdi_phy_fini(struct efx_nic *efx) |
| 508 | { |
| 509 | struct efx_mcdi_phy_data *phy_data = efx->phy_data; |
| 510 | |
| 511 | efx->phy_data = NULL; |
| 512 | kfree(phy_data); |
| 513 | } |
| 514 | |
| 515 | static void efx_mcdi_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd) |
| 516 | { |
| 517 | struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data; |
| 518 | u8 outbuf[MC_CMD_GET_LINK_OUT_LEN]; |
| 519 | int rc; |
| 520 | |
| 521 | ecmd->supported = |
| 522 | mcdi_to_ethtool_cap(phy_cfg->media, phy_cfg->supported_cap); |
| 523 | ecmd->advertising = efx->link_advertising; |
| 524 | ecmd->speed = efx->link_state.speed; |
| 525 | ecmd->duplex = efx->link_state.fd; |
| 526 | ecmd->port = mcdi_to_ethtool_media(phy_cfg->media); |
| 527 | ecmd->phy_address = phy_cfg->port; |
| 528 | ecmd->transceiver = XCVR_INTERNAL; |
| 529 | ecmd->autoneg = !!(efx->link_advertising & ADVERTISED_Autoneg); |
| 530 | ecmd->mdio_support = (efx->mdio.mode_support & |
| 531 | (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22)); |
| 532 | |
| 533 | BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); |
| 534 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, |
| 535 | outbuf, sizeof(outbuf), NULL); |
| 536 | if (rc) { |
| 537 | EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc); |
| 538 | return; |
| 539 | } |
| 540 | ecmd->lp_advertising = |
| 541 | mcdi_to_ethtool_cap(phy_cfg->media, |
| 542 | MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP)); |
| 543 | } |
| 544 | |
| 545 | static int efx_mcdi_phy_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd) |
| 546 | { |
| 547 | struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data; |
| 548 | u32 caps; |
| 549 | int rc; |
| 550 | |
| 551 | if (ecmd->autoneg) { |
| 552 | caps = (ethtool_to_mcdi_cap(ecmd->advertising) | |
| 553 | 1 << MC_CMD_PHY_CAP_AN_LBN); |
| 554 | } else if (ecmd->duplex) { |
| 555 | switch (ecmd->speed) { |
| 556 | case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break; |
| 557 | case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break; |
| 558 | case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break; |
| 559 | case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break; |
| 560 | default: return -EINVAL; |
| 561 | } |
| 562 | } else { |
| 563 | switch (ecmd->speed) { |
| 564 | case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break; |
| 565 | case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break; |
| 566 | case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break; |
| 567 | default: return -EINVAL; |
| 568 | } |
| 569 | } |
| 570 | |
| 571 | rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), |
| 572 | efx->loopback_mode, 0); |
| 573 | if (rc) |
| 574 | return rc; |
| 575 | |
| 576 | if (ecmd->autoneg) { |
| 577 | efx_link_set_advertising( |
| 578 | efx, ecmd->advertising | ADVERTISED_Autoneg); |
| 579 | phy_cfg->forced_cap = 0; |
| 580 | } else { |
| 581 | efx_link_set_advertising(efx, 0); |
| 582 | phy_cfg->forced_cap = caps; |
| 583 | } |
| 584 | return 0; |
| 585 | } |
| 586 | |
| 587 | struct efx_phy_operations efx_mcdi_phy_ops = { |
| 588 | .probe = efx_mcdi_phy_probe, |
| 589 | .init = efx_mcdi_phy_init, |
| 590 | .reconfigure = efx_mcdi_phy_reconfigure, |
| 591 | .poll = efx_mcdi_phy_poll, |
| 592 | .fini = efx_mcdi_phy_fini, |
| 593 | .get_settings = efx_mcdi_phy_get_settings, |
| 594 | .set_settings = efx_mcdi_phy_set_settings, |
| 595 | .run_tests = NULL, |
| 596 | .test_name = NULL, |
| 597 | }; |