1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* Applied Micro X-Gene SoC Ethernet Driver 3 * 4 * Copyright (c) 2014, Applied Micro Circuits Corporation 5 * Authors: Iyappan Subramanian <isubramanian@apm.com> 6 * Keyur Chudgar <kchudgar@apm.com> 7 */ 8 9 #include "xgene_enet_main.h" 10 #include "xgene_enet_hw.h" 11 #include "xgene_enet_sgmac.h" 12 #include "xgene_enet_xgmac.h" 13 14 static void xgene_enet_wr_csr(struct xgene_enet_pdata *p, u32 offset, u32 val) 15 { 16 iowrite32(val, p->eth_csr_addr + offset); 17 } 18 19 static void xgene_enet_wr_clkrst_csr(struct xgene_enet_pdata *p, u32 offset, 20 u32 val) 21 { 22 iowrite32(val, p->base_addr + offset); 23 } 24 25 static void xgene_enet_wr_ring_if(struct xgene_enet_pdata *p, 26 u32 offset, u32 val) 27 { 28 iowrite32(val, p->eth_ring_if_addr + offset); 29 } 30 31 static void xgene_enet_wr_diag_csr(struct xgene_enet_pdata *p, 32 u32 offset, u32 val) 33 { 34 iowrite32(val, p->eth_diag_csr_addr + offset); 35 } 36 37 static void xgene_enet_wr_mcx_csr(struct xgene_enet_pdata *pdata, 38 u32 offset, u32 val) 39 { 40 void __iomem *addr = pdata->mcx_mac_csr_addr + offset; 41 42 iowrite32(val, addr); 43 } 44 45 static u32 xgene_enet_rd_csr(struct xgene_enet_pdata *p, u32 offset) 46 { 47 return ioread32(p->eth_csr_addr + offset); 48 } 49 50 static u32 xgene_enet_rd_diag_csr(struct xgene_enet_pdata *p, u32 offset) 51 { 52 return ioread32(p->eth_diag_csr_addr + offset); 53 } 54 55 static u32 xgene_enet_rd_mcx_csr(struct xgene_enet_pdata *p, u32 offset) 56 { 57 return ioread32(p->mcx_mac_csr_addr + offset); 58 } 59 60 static int xgene_enet_ecc_init(struct xgene_enet_pdata *p) 61 { 62 struct net_device *ndev = p->ndev; 63 u32 data, shutdown; 64 int i = 0; 65 66 shutdown = xgene_enet_rd_diag_csr(p, ENET_CFG_MEM_RAM_SHUTDOWN_ADDR); 67 data = xgene_enet_rd_diag_csr(p, ENET_BLOCK_MEM_RDY_ADDR); 68 69 if (!shutdown && data == ~0U) { 70 netdev_dbg(ndev, "+ ecc_init done, skipping\n"); 71 return 0; 72 } 73 74 xgene_enet_wr_diag_csr(p, ENET_CFG_MEM_RAM_SHUTDOWN_ADDR, 0); 75 do { 76 usleep_range(100, 110); 77 data = xgene_enet_rd_diag_csr(p, ENET_BLOCK_MEM_RDY_ADDR); 78 if (data == ~0U) 79 return 0; 80 } while (++i < 10); 81 82 netdev_err(ndev, "Failed to release memory from shutdown\n"); 83 return -ENODEV; 84 } 85 86 static void xgene_sgmac_get_drop_cnt(struct xgene_enet_pdata *pdata, 87 u32 *rx, u32 *tx) 88 { 89 u32 addr, count; 90 91 addr = (pdata->enet_id != XGENE_ENET1) ? 92 XG_MCX_ICM_ECM_DROP_COUNT_REG0_ADDR : 93 ICM_ECM_DROP_COUNT_REG0_ADDR + pdata->port_id * OFFSET_4; 94 count = xgene_enet_rd_mcx_csr(pdata, addr); 95 *rx = ICM_DROP_COUNT(count); 96 *tx = ECM_DROP_COUNT(count); 97 /* Errata: 10GE_4 - ICM_ECM_DROP_COUNT not clear-on-read */ 98 addr = (pdata->enet_id != XGENE_ENET1) ? 99 XG_MCX_ECM_CONFIG0_REG_0_ADDR : 100 ECM_CONFIG0_REG_0_ADDR + pdata->port_id * OFFSET_4; 101 xgene_enet_rd_mcx_csr(pdata, addr); 102 } 103 104 static void xgene_enet_config_ring_if_assoc(struct xgene_enet_pdata *p) 105 { 106 u32 val; 107 108 val = (p->enet_id == XGENE_ENET1) ? 0xffffffff : 0; 109 xgene_enet_wr_ring_if(p, ENET_CFGSSQMIWQASSOC_ADDR, val); 110 xgene_enet_wr_ring_if(p, ENET_CFGSSQMIFPQASSOC_ADDR, val); 111 } 112 113 static void xgene_mii_phy_write(struct xgene_enet_pdata *p, u8 phy_id, 114 u32 reg, u16 data) 115 { 116 u32 addr, wr_data, done; 117 int i; 118 119 addr = PHY_ADDR(phy_id) | REG_ADDR(reg); 120 xgene_enet_wr_mac(p, MII_MGMT_ADDRESS_ADDR, addr); 121 122 wr_data = PHY_CONTROL(data); 123 xgene_enet_wr_mac(p, MII_MGMT_CONTROL_ADDR, wr_data); 124 125 for (i = 0; i < 10; i++) { 126 done = xgene_enet_rd_mac(p, MII_MGMT_INDICATORS_ADDR); 127 if (!(done & BUSY_MASK)) 128 return; 129 usleep_range(10, 20); 130 } 131 132 netdev_err(p->ndev, "MII_MGMT write failed\n"); 133 } 134 135 static u32 xgene_mii_phy_read(struct xgene_enet_pdata *p, u8 phy_id, u32 reg) 136 { 137 u32 addr, data, done; 138 int i; 139 140 addr = PHY_ADDR(phy_id) | REG_ADDR(reg); 141 xgene_enet_wr_mac(p, MII_MGMT_ADDRESS_ADDR, addr); 142 xgene_enet_wr_mac(p, MII_MGMT_COMMAND_ADDR, READ_CYCLE_MASK); 143 144 for (i = 0; i < 10; i++) { 145 done = xgene_enet_rd_mac(p, MII_MGMT_INDICATORS_ADDR); 146 if (!(done & BUSY_MASK)) { 147 data = xgene_enet_rd_mac(p, MII_MGMT_STATUS_ADDR); 148 xgene_enet_wr_mac(p, MII_MGMT_COMMAND_ADDR, 0); 149 150 return data; 151 } 152 usleep_range(10, 20); 153 } 154 155 netdev_err(p->ndev, "MII_MGMT read failed\n"); 156 157 return 0; 158 } 159 160 static void xgene_sgmac_reset(struct xgene_enet_pdata *p) 161 { 162 xgene_enet_wr_mac(p, MAC_CONFIG_1_ADDR, SOFT_RESET1); 163 xgene_enet_wr_mac(p, MAC_CONFIG_1_ADDR, 0); 164 } 165 166 static void xgene_sgmac_set_mac_addr(struct xgene_enet_pdata *p) 167 { 168 u32 addr0, addr1; 169 u8 *dev_addr = p->ndev->dev_addr; 170 171 addr0 = (dev_addr[3] << 24) | (dev_addr[2] << 16) | 172 (dev_addr[1] << 8) | dev_addr[0]; 173 xgene_enet_wr_mac(p, STATION_ADDR0_ADDR, addr0); 174 175 addr1 = xgene_enet_rd_mac(p, STATION_ADDR1_ADDR); 176 addr1 |= (dev_addr[5] << 24) | (dev_addr[4] << 16); 177 xgene_enet_wr_mac(p, STATION_ADDR1_ADDR, addr1); 178 } 179 180 static u32 xgene_enet_link_status(struct xgene_enet_pdata *p) 181 { 182 u32 data; 183 184 data = xgene_mii_phy_read(p, INT_PHY_ADDR, 185 SGMII_BASE_PAGE_ABILITY_ADDR >> 2); 186 187 if (LINK_SPEED(data) == PHY_SPEED_1000) 188 p->phy_speed = SPEED_1000; 189 else if (LINK_SPEED(data) == PHY_SPEED_100) 190 p->phy_speed = SPEED_100; 191 else 192 p->phy_speed = SPEED_10; 193 194 return data & LINK_UP; 195 } 196 197 static void xgene_sgmii_configure(struct xgene_enet_pdata *p) 198 { 199 xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_TBI_CONTROL_ADDR >> 2, 200 0x8000); 201 xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_CONTROL_ADDR >> 2, 0x9000); 202 xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_TBI_CONTROL_ADDR >> 2, 0); 203 } 204 205 static void xgene_sgmii_tbi_control_reset(struct xgene_enet_pdata *p) 206 { 207 xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_TBI_CONTROL_ADDR >> 2, 208 0x8000); 209 xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_TBI_CONTROL_ADDR >> 2, 0); 210 } 211 212 static void xgene_sgmii_reset(struct xgene_enet_pdata *p) 213 { 214 u32 value; 215 216 if (p->phy_speed == SPEED_UNKNOWN) 217 return; 218 219 value = xgene_mii_phy_read(p, INT_PHY_ADDR, 220 SGMII_BASE_PAGE_ABILITY_ADDR >> 2); 221 if (!(value & LINK_UP)) 222 xgene_sgmii_tbi_control_reset(p); 223 } 224 225 static void xgene_sgmac_set_speed(struct xgene_enet_pdata *p) 226 { 227 u32 icm0_addr, icm2_addr, debug_addr; 228 u32 icm0, icm2, intf_ctl; 229 u32 mc2, value; 230 231 xgene_sgmii_reset(p); 232 233 if (p->enet_id == XGENE_ENET1) { 234 icm0_addr = ICM_CONFIG0_REG_0_ADDR + p->port_id * OFFSET_8; 235 icm2_addr = ICM_CONFIG2_REG_0_ADDR + p->port_id * OFFSET_4; 236 debug_addr = DEBUG_REG_ADDR; 237 } else { 238 icm0_addr = XG_MCX_ICM_CONFIG0_REG_0_ADDR; 239 icm2_addr = XG_MCX_ICM_CONFIG2_REG_0_ADDR; 240 debug_addr = XG_DEBUG_REG_ADDR; 241 } 242 243 icm0 = xgene_enet_rd_mcx_csr(p, icm0_addr); 244 icm2 = xgene_enet_rd_mcx_csr(p, icm2_addr); 245 mc2 = xgene_enet_rd_mac(p, MAC_CONFIG_2_ADDR); 246 intf_ctl = xgene_enet_rd_mac(p, INTERFACE_CONTROL_ADDR); 247 248 switch (p->phy_speed) { 249 case SPEED_10: 250 ENET_INTERFACE_MODE2_SET(&mc2, 1); 251 intf_ctl &= ~(ENET_LHD_MODE | ENET_GHD_MODE); 252 CFG_MACMODE_SET(&icm0, 0); 253 CFG_WAITASYNCRD_SET(&icm2, 500); 254 break; 255 case SPEED_100: 256 ENET_INTERFACE_MODE2_SET(&mc2, 1); 257 intf_ctl &= ~ENET_GHD_MODE; 258 intf_ctl |= ENET_LHD_MODE; 259 CFG_MACMODE_SET(&icm0, 1); 260 CFG_WAITASYNCRD_SET(&icm2, 80); 261 break; 262 default: 263 ENET_INTERFACE_MODE2_SET(&mc2, 2); 264 intf_ctl &= ~ENET_LHD_MODE; 265 intf_ctl |= ENET_GHD_MODE; 266 CFG_MACMODE_SET(&icm0, 2); 267 CFG_WAITASYNCRD_SET(&icm2, 16); 268 value = xgene_enet_rd_csr(p, debug_addr); 269 value |= CFG_BYPASS_UNISEC_TX | CFG_BYPASS_UNISEC_RX; 270 xgene_enet_wr_csr(p, debug_addr, value); 271 break; 272 } 273 274 mc2 |= FULL_DUPLEX2 | PAD_CRC; 275 xgene_enet_wr_mac(p, MAC_CONFIG_2_ADDR, mc2); 276 xgene_enet_wr_mac(p, INTERFACE_CONTROL_ADDR, intf_ctl); 277 xgene_enet_wr_mcx_csr(p, icm0_addr, icm0); 278 xgene_enet_wr_mcx_csr(p, icm2_addr, icm2); 279 } 280 281 static void xgene_sgmac_set_frame_size(struct xgene_enet_pdata *pdata, int size) 282 { 283 xgene_enet_wr_mac(pdata, MAX_FRAME_LEN_ADDR, size); 284 } 285 286 static void xgene_sgmii_enable_autoneg(struct xgene_enet_pdata *p) 287 { 288 u32 data, loop = 10; 289 290 xgene_sgmii_configure(p); 291 292 while (loop--) { 293 data = xgene_mii_phy_read(p, INT_PHY_ADDR, 294 SGMII_STATUS_ADDR >> 2); 295 if ((data & AUTO_NEG_COMPLETE) && (data & LINK_STATUS)) 296 break; 297 usleep_range(1000, 2000); 298 } 299 if (!(data & AUTO_NEG_COMPLETE) || !(data & LINK_STATUS)) 300 netdev_err(p->ndev, "Auto-negotiation failed\n"); 301 } 302 303 static void xgene_sgmac_rxtx(struct xgene_enet_pdata *p, u32 bits, bool set) 304 { 305 u32 data; 306 307 data = xgene_enet_rd_mac(p, MAC_CONFIG_1_ADDR); 308 309 if (set) 310 data |= bits; 311 else 312 data &= ~bits; 313 314 xgene_enet_wr_mac(p, MAC_CONFIG_1_ADDR, data); 315 } 316 317 static void xgene_sgmac_flowctl_tx(struct xgene_enet_pdata *p, bool enable) 318 { 319 xgene_sgmac_rxtx(p, TX_FLOW_EN, enable); 320 321 p->mac_ops->enable_tx_pause(p, enable); 322 } 323 324 static void xgene_sgmac_flowctl_rx(struct xgene_enet_pdata *pdata, bool enable) 325 { 326 xgene_sgmac_rxtx(pdata, RX_FLOW_EN, enable); 327 } 328 329 static void xgene_sgmac_init(struct xgene_enet_pdata *p) 330 { 331 u32 pause_thres_reg, pause_off_thres_reg; 332 u32 enet_spare_cfg_reg, rsif_config_reg; 333 u32 cfg_bypass_reg, rx_dv_gate_reg; 334 u32 data, data1, data2, offset; 335 u32 multi_dpf_reg; 336 337 if (!(p->enet_id == XGENE_ENET2 && p->mdio_driver)) 338 xgene_sgmac_reset(p); 339 340 xgene_sgmii_enable_autoneg(p); 341 xgene_sgmac_set_speed(p); 342 xgene_sgmac_set_mac_addr(p); 343 344 if (p->enet_id == XGENE_ENET1) { 345 enet_spare_cfg_reg = ENET_SPARE_CFG_REG_ADDR; 346 rsif_config_reg = RSIF_CONFIG_REG_ADDR; 347 cfg_bypass_reg = CFG_BYPASS_ADDR; 348 offset = p->port_id * OFFSET_4; 349 rx_dv_gate_reg = SG_RX_DV_GATE_REG_0_ADDR + offset; 350 } else { 351 enet_spare_cfg_reg = XG_ENET_SPARE_CFG_REG_ADDR; 352 rsif_config_reg = XG_RSIF_CONFIG_REG_ADDR; 353 cfg_bypass_reg = XG_CFG_BYPASS_ADDR; 354 rx_dv_gate_reg = XG_MCX_RX_DV_GATE_REG_0_ADDR; 355 } 356 357 data = xgene_enet_rd_csr(p, enet_spare_cfg_reg); 358 data |= MPA_IDLE_WITH_QMI_EMPTY; 359 xgene_enet_wr_csr(p, enet_spare_cfg_reg, data); 360 361 /* Adjust MDC clock frequency */ 362 data = xgene_enet_rd_mac(p, MII_MGMT_CONFIG_ADDR); 363 MGMT_CLOCK_SEL_SET(&data, 7); 364 xgene_enet_wr_mac(p, MII_MGMT_CONFIG_ADDR, data); 365 366 /* Enable drop if bufpool not available */ 367 data = xgene_enet_rd_csr(p, rsif_config_reg); 368 data |= CFG_RSIF_FPBUFF_TIMEOUT_EN; 369 xgene_enet_wr_csr(p, rsif_config_reg, data); 370 371 /* Configure HW pause frame generation */ 372 multi_dpf_reg = (p->enet_id == XGENE_ENET1) ? CSR_MULTI_DPF0_ADDR : 373 XG_MCX_MULTI_DPF0_ADDR; 374 data = xgene_enet_rd_mcx_csr(p, multi_dpf_reg); 375 data = (DEF_QUANTA << 16) | (data & 0xffff); 376 xgene_enet_wr_mcx_csr(p, multi_dpf_reg, data); 377 378 if (p->enet_id != XGENE_ENET1) { 379 data = xgene_enet_rd_mcx_csr(p, XG_MCX_MULTI_DPF1_ADDR); 380 data = (NORM_PAUSE_OPCODE << 16) | (data & 0xFFFF); 381 xgene_enet_wr_mcx_csr(p, XG_MCX_MULTI_DPF1_ADDR, data); 382 } 383 384 pause_thres_reg = (p->enet_id == XGENE_ENET1) ? RXBUF_PAUSE_THRESH : 385 XG_RXBUF_PAUSE_THRESH; 386 pause_off_thres_reg = (p->enet_id == XGENE_ENET1) ? 387 RXBUF_PAUSE_OFF_THRESH : 0; 388 389 if (p->enet_id == XGENE_ENET1) { 390 data1 = xgene_enet_rd_csr(p, pause_thres_reg); 391 data2 = xgene_enet_rd_csr(p, pause_off_thres_reg); 392 393 if (!(p->port_id % 2)) { 394 data1 = (data1 & 0xffff0000) | DEF_PAUSE_THRES; 395 data2 = (data2 & 0xffff0000) | DEF_PAUSE_OFF_THRES; 396 } else { 397 data1 = (data1 & 0xffff) | (DEF_PAUSE_THRES << 16); 398 data2 = (data2 & 0xffff) | (DEF_PAUSE_OFF_THRES << 16); 399 } 400 401 xgene_enet_wr_csr(p, pause_thres_reg, data1); 402 xgene_enet_wr_csr(p, pause_off_thres_reg, data2); 403 } else { 404 data = (DEF_PAUSE_OFF_THRES << 16) | DEF_PAUSE_THRES; 405 xgene_enet_wr_csr(p, pause_thres_reg, data); 406 } 407 408 xgene_sgmac_flowctl_tx(p, p->tx_pause); 409 xgene_sgmac_flowctl_rx(p, p->rx_pause); 410 411 /* Bypass traffic gating */ 412 xgene_enet_wr_csr(p, XG_ENET_SPARE_CFG_REG_1_ADDR, 0x84); 413 xgene_enet_wr_csr(p, cfg_bypass_reg, RESUME_TX); 414 xgene_enet_wr_mcx_csr(p, rx_dv_gate_reg, RESUME_RX0); 415 } 416 417 static void xgene_sgmac_rx_enable(struct xgene_enet_pdata *p) 418 { 419 xgene_sgmac_rxtx(p, RX_EN, true); 420 } 421 422 static void xgene_sgmac_tx_enable(struct xgene_enet_pdata *p) 423 { 424 xgene_sgmac_rxtx(p, TX_EN, true); 425 } 426 427 static void xgene_sgmac_rx_disable(struct xgene_enet_pdata *p) 428 { 429 xgene_sgmac_rxtx(p, RX_EN, false); 430 } 431 432 static void xgene_sgmac_tx_disable(struct xgene_enet_pdata *p) 433 { 434 xgene_sgmac_rxtx(p, TX_EN, false); 435 } 436 437 static int xgene_enet_reset(struct xgene_enet_pdata *p) 438 { 439 struct device *dev = &p->pdev->dev; 440 441 if (!xgene_ring_mgr_init(p)) 442 return -ENODEV; 443 444 if (p->mdio_driver && p->enet_id == XGENE_ENET2) { 445 xgene_enet_config_ring_if_assoc(p); 446 return 0; 447 } 448 449 if (p->enet_id == XGENE_ENET2) 450 xgene_enet_wr_clkrst_csr(p, XGENET_CONFIG_REG_ADDR, SGMII_EN); 451 452 if (dev->of_node) { 453 if (!IS_ERR(p->clk)) { 454 clk_prepare_enable(p->clk); 455 udelay(5); 456 clk_disable_unprepare(p->clk); 457 udelay(5); 458 clk_prepare_enable(p->clk); 459 udelay(5); 460 } 461 } else { 462 #ifdef CONFIG_ACPI 463 if (acpi_has_method(ACPI_HANDLE(&p->pdev->dev), "_RST")) 464 acpi_evaluate_object(ACPI_HANDLE(&p->pdev->dev), 465 "_RST", NULL, NULL); 466 else if (acpi_has_method(ACPI_HANDLE(&p->pdev->dev), "_INI")) 467 acpi_evaluate_object(ACPI_HANDLE(&p->pdev->dev), 468 "_INI", NULL, NULL); 469 #endif 470 } 471 472 if (!p->port_id) { 473 xgene_enet_ecc_init(p); 474 xgene_enet_config_ring_if_assoc(p); 475 } 476 477 return 0; 478 } 479 480 static void xgene_enet_cle_bypass(struct xgene_enet_pdata *p, 481 u32 dst_ring_num, u16 bufpool_id, 482 u16 nxtbufpool_id) 483 { 484 u32 cle_bypass_reg0, cle_bypass_reg1; 485 u32 offset = p->port_id * MAC_OFFSET; 486 u32 data, fpsel, nxtfpsel; 487 488 if (p->enet_id == XGENE_ENET1) { 489 cle_bypass_reg0 = CLE_BYPASS_REG0_0_ADDR; 490 cle_bypass_reg1 = CLE_BYPASS_REG1_0_ADDR; 491 } else { 492 cle_bypass_reg0 = XCLE_BYPASS_REG0_ADDR; 493 cle_bypass_reg1 = XCLE_BYPASS_REG1_ADDR; 494 } 495 496 data = CFG_CLE_BYPASS_EN0; 497 xgene_enet_wr_csr(p, cle_bypass_reg0 + offset, data); 498 499 fpsel = xgene_enet_get_fpsel(bufpool_id); 500 nxtfpsel = xgene_enet_get_fpsel(nxtbufpool_id); 501 data = CFG_CLE_DSTQID0(dst_ring_num) | CFG_CLE_FPSEL0(fpsel) | 502 CFG_CLE_NXTFPSEL0(nxtfpsel); 503 xgene_enet_wr_csr(p, cle_bypass_reg1 + offset, data); 504 } 505 506 static void xgene_enet_clear(struct xgene_enet_pdata *pdata, 507 struct xgene_enet_desc_ring *ring) 508 { 509 u32 addr, data; 510 511 if (xgene_enet_is_bufpool(ring->id)) { 512 addr = ENET_CFGSSQMIFPRESET_ADDR; 513 data = BIT(xgene_enet_get_fpsel(ring->id)); 514 } else { 515 addr = ENET_CFGSSQMIWQRESET_ADDR; 516 data = BIT(xgene_enet_ring_bufnum(ring->id)); 517 } 518 519 xgene_enet_wr_ring_if(pdata, addr, data); 520 } 521 522 static void xgene_enet_shutdown(struct xgene_enet_pdata *p) 523 { 524 struct device *dev = &p->pdev->dev; 525 526 if (dev->of_node) { 527 if (!IS_ERR(p->clk)) 528 clk_disable_unprepare(p->clk); 529 } 530 } 531 532 static void xgene_enet_link_state(struct work_struct *work) 533 { 534 struct xgene_enet_pdata *p = container_of(to_delayed_work(work), 535 struct xgene_enet_pdata, link_work); 536 struct net_device *ndev = p->ndev; 537 u32 link, poll_interval; 538 539 link = xgene_enet_link_status(p); 540 if (link) { 541 if (!netif_carrier_ok(ndev)) { 542 netif_carrier_on(ndev); 543 xgene_sgmac_set_speed(p); 544 xgene_sgmac_rx_enable(p); 545 xgene_sgmac_tx_enable(p); 546 netdev_info(ndev, "Link is Up - %dMbps\n", 547 p->phy_speed); 548 } 549 poll_interval = PHY_POLL_LINK_ON; 550 } else { 551 if (netif_carrier_ok(ndev)) { 552 xgene_sgmac_rx_disable(p); 553 xgene_sgmac_tx_disable(p); 554 netif_carrier_off(ndev); 555 netdev_info(ndev, "Link is Down\n"); 556 } 557 poll_interval = PHY_POLL_LINK_OFF; 558 } 559 560 schedule_delayed_work(&p->link_work, poll_interval); 561 } 562 563 static void xgene_sgmac_enable_tx_pause(struct xgene_enet_pdata *p, bool enable) 564 { 565 u32 data, ecm_cfg_addr; 566 567 if (p->enet_id == XGENE_ENET1) { 568 ecm_cfg_addr = (!(p->port_id % 2)) ? CSR_ECM_CFG_0_ADDR : 569 CSR_ECM_CFG_1_ADDR; 570 } else { 571 ecm_cfg_addr = XG_MCX_ECM_CFG_0_ADDR; 572 } 573 574 data = xgene_enet_rd_mcx_csr(p, ecm_cfg_addr); 575 if (enable) 576 data |= MULTI_DPF_AUTOCTRL | PAUSE_XON_EN; 577 else 578 data &= ~(MULTI_DPF_AUTOCTRL | PAUSE_XON_EN); 579 xgene_enet_wr_mcx_csr(p, ecm_cfg_addr, data); 580 } 581 582 const struct xgene_mac_ops xgene_sgmac_ops = { 583 .init = xgene_sgmac_init, 584 .reset = xgene_sgmac_reset, 585 .rx_enable = xgene_sgmac_rx_enable, 586 .tx_enable = xgene_sgmac_tx_enable, 587 .rx_disable = xgene_sgmac_rx_disable, 588 .tx_disable = xgene_sgmac_tx_disable, 589 .get_drop_cnt = xgene_sgmac_get_drop_cnt, 590 .set_speed = xgene_sgmac_set_speed, 591 .set_mac_addr = xgene_sgmac_set_mac_addr, 592 .set_framesize = xgene_sgmac_set_frame_size, 593 .link_state = xgene_enet_link_state, 594 .enable_tx_pause = xgene_sgmac_enable_tx_pause, 595 .flowctl_tx = xgene_sgmac_flowctl_tx, 596 .flowctl_rx = xgene_sgmac_flowctl_rx 597 }; 598 599 const struct xgene_port_ops xgene_sgport_ops = { 600 .reset = xgene_enet_reset, 601 .clear = xgene_enet_clear, 602 .cle_bypass = xgene_enet_cle_bypass, 603 .shutdown = xgene_enet_shutdown 604 }; 605