1 /******************************************************************************* 2 This contains the functions to handle the platform driver. 3 4 Copyright (C) 2007-2011 STMicroelectronics Ltd 5 6 This program is free software; you can redistribute it and/or modify it 7 under the terms and conditions of the GNU General Public License, 8 version 2, as published by the Free Software Foundation. 9 10 This program is distributed in the hope it will be useful, but WITHOUT 11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 more details. 14 15 The full GNU General Public License is included in this distribution in 16 the file called "COPYING". 17 18 Author: Giuseppe Cavallaro <peppe.cavallaro@st.com> 19 *******************************************************************************/ 20 21 #include <linux/platform_device.h> 22 #include <linux/module.h> 23 #include <linux/io.h> 24 #include <linux/of.h> 25 #include <linux/of_net.h> 26 #include <linux/of_device.h> 27 #include <linux/of_mdio.h> 28 29 #include "stmmac.h" 30 #include "stmmac_platform.h" 31 32 #ifdef CONFIG_OF 33 34 /** 35 * dwmac1000_validate_mcast_bins - validates the number of Multicast filter bins 36 * @mcast_bins: Multicast filtering bins 37 * Description: 38 * this function validates the number of Multicast filtering bins specified 39 * by the configuration through the device tree. The Synopsys GMAC supports 40 * 64 bins, 128 bins, or 256 bins. "bins" refer to the division of CRC 41 * number space. 64 bins correspond to 6 bits of the CRC, 128 corresponds 42 * to 7 bits, and 256 refers to 8 bits of the CRC. Any other setting is 43 * invalid and will cause the filtering algorithm to use Multicast 44 * promiscuous mode. 45 */ 46 static int dwmac1000_validate_mcast_bins(int mcast_bins) 47 { 48 int x = mcast_bins; 49 50 switch (x) { 51 case HASH_TABLE_SIZE: 52 case 128: 53 case 256: 54 break; 55 default: 56 x = 0; 57 pr_info("Hash table entries set to unexpected value %d", 58 mcast_bins); 59 break; 60 } 61 return x; 62 } 63 64 /** 65 * dwmac1000_validate_ucast_entries - validate the Unicast address entries 66 * @ucast_entries: number of Unicast address entries 67 * Description: 68 * This function validates the number of Unicast address entries supported 69 * by a particular Synopsys 10/100/1000 controller. The Synopsys controller 70 * supports 1, 32, 64, or 128 Unicast filter entries for it's Unicast filter 71 * logic. This function validates a valid, supported configuration is 72 * selected, and defaults to 1 Unicast address if an unsupported 73 * configuration is selected. 74 */ 75 static int dwmac1000_validate_ucast_entries(int ucast_entries) 76 { 77 int x = ucast_entries; 78 79 switch (x) { 80 case 1: 81 case 32: 82 case 64: 83 case 128: 84 break; 85 default: 86 x = 1; 87 pr_info("Unicast table entries set to unexpected value %d\n", 88 ucast_entries); 89 break; 90 } 91 return x; 92 } 93 94 /** 95 * stmmac_axi_setup - parse DT parameters for programming the AXI register 96 * @pdev: platform device 97 * @priv: driver private struct. 98 * Description: 99 * if required, from device-tree the AXI internal register can be tuned 100 * by using platform parameters. 101 */ 102 static struct stmmac_axi *stmmac_axi_setup(struct platform_device *pdev) 103 { 104 struct device_node *np; 105 struct stmmac_axi *axi; 106 107 np = of_parse_phandle(pdev->dev.of_node, "snps,axi-config", 0); 108 if (!np) 109 return NULL; 110 111 axi = devm_kzalloc(&pdev->dev, sizeof(*axi), GFP_KERNEL); 112 if (!axi) { 113 of_node_put(np); 114 return ERR_PTR(-ENOMEM); 115 } 116 117 axi->axi_lpi_en = of_property_read_bool(np, "snps,lpi_en"); 118 axi->axi_xit_frm = of_property_read_bool(np, "snps,xit_frm"); 119 axi->axi_kbbe = of_property_read_bool(np, "snps,axi_kbbe"); 120 axi->axi_fb = of_property_read_bool(np, "snps,axi_fb"); 121 axi->axi_mb = of_property_read_bool(np, "snps,axi_mb"); 122 axi->axi_rb = of_property_read_bool(np, "snps,axi_rb"); 123 124 if (of_property_read_u32(np, "snps,wr_osr_lmt", &axi->axi_wr_osr_lmt)) 125 axi->axi_wr_osr_lmt = 1; 126 if (of_property_read_u32(np, "snps,rd_osr_lmt", &axi->axi_rd_osr_lmt)) 127 axi->axi_rd_osr_lmt = 1; 128 of_property_read_u32_array(np, "snps,blen", axi->axi_blen, AXI_BLEN); 129 of_node_put(np); 130 131 return axi; 132 } 133 134 /** 135 * stmmac_mtl_setup - parse DT parameters for multiple queues configuration 136 * @pdev: platform device 137 */ 138 static void stmmac_mtl_setup(struct platform_device *pdev, 139 struct plat_stmmacenet_data *plat) 140 { 141 struct device_node *q_node; 142 struct device_node *rx_node; 143 struct device_node *tx_node; 144 u8 queue = 0; 145 146 /* For backwards-compatibility with device trees that don't have any 147 * snps,mtl-rx-config or snps,mtl-tx-config properties, we fall back 148 * to one RX and TX queues each. 149 */ 150 plat->rx_queues_to_use = 1; 151 plat->tx_queues_to_use = 1; 152 153 rx_node = of_parse_phandle(pdev->dev.of_node, "snps,mtl-rx-config", 0); 154 if (!rx_node) 155 return; 156 157 tx_node = of_parse_phandle(pdev->dev.of_node, "snps,mtl-tx-config", 0); 158 if (!tx_node) { 159 of_node_put(rx_node); 160 return; 161 } 162 163 /* Processing RX queues common config */ 164 if (of_property_read_u8(rx_node, "snps,rx-queues-to-use", 165 &plat->rx_queues_to_use)) 166 plat->rx_queues_to_use = 1; 167 168 if (of_property_read_bool(rx_node, "snps,rx-sched-sp")) 169 plat->rx_sched_algorithm = MTL_RX_ALGORITHM_SP; 170 else if (of_property_read_bool(rx_node, "snps,rx-sched-wsp")) 171 plat->rx_sched_algorithm = MTL_RX_ALGORITHM_WSP; 172 else 173 plat->rx_sched_algorithm = MTL_RX_ALGORITHM_SP; 174 175 /* Processing individual RX queue config */ 176 for_each_child_of_node(rx_node, q_node) { 177 if (queue >= plat->rx_queues_to_use) 178 break; 179 180 if (of_property_read_bool(q_node, "snps,dcb-algorithm")) 181 plat->rx_queues_cfg[queue].mode_to_use = MTL_QUEUE_DCB; 182 else if (of_property_read_bool(q_node, "snps,avb-algorithm")) 183 plat->rx_queues_cfg[queue].mode_to_use = MTL_QUEUE_AVB; 184 else 185 plat->rx_queues_cfg[queue].mode_to_use = MTL_QUEUE_DCB; 186 187 if (of_property_read_u8(q_node, "snps,map-to-dma-channel", 188 &plat->rx_queues_cfg[queue].chan)) 189 plat->rx_queues_cfg[queue].chan = queue; 190 /* TODO: Dynamic mapping to be included in the future */ 191 192 if (of_property_read_u32(q_node, "snps,priority", 193 &plat->rx_queues_cfg[queue].prio)) { 194 plat->rx_queues_cfg[queue].prio = 0; 195 plat->rx_queues_cfg[queue].use_prio = false; 196 } else { 197 plat->rx_queues_cfg[queue].use_prio = true; 198 } 199 200 /* RX queue specific packet type routing */ 201 if (of_property_read_bool(q_node, "snps,route-avcp")) 202 plat->rx_queues_cfg[queue].pkt_route = PACKET_AVCPQ; 203 else if (of_property_read_bool(q_node, "snps,route-ptp")) 204 plat->rx_queues_cfg[queue].pkt_route = PACKET_PTPQ; 205 else if (of_property_read_bool(q_node, "snps,route-dcbcp")) 206 plat->rx_queues_cfg[queue].pkt_route = PACKET_DCBCPQ; 207 else if (of_property_read_bool(q_node, "snps,route-up")) 208 plat->rx_queues_cfg[queue].pkt_route = PACKET_UPQ; 209 else if (of_property_read_bool(q_node, "snps,route-multi-broad")) 210 plat->rx_queues_cfg[queue].pkt_route = PACKET_MCBCQ; 211 else 212 plat->rx_queues_cfg[queue].pkt_route = 0x0; 213 214 queue++; 215 } 216 217 /* Processing TX queues common config */ 218 if (of_property_read_u8(tx_node, "snps,tx-queues-to-use", 219 &plat->tx_queues_to_use)) 220 plat->tx_queues_to_use = 1; 221 222 if (of_property_read_bool(tx_node, "snps,tx-sched-wrr")) 223 plat->tx_sched_algorithm = MTL_TX_ALGORITHM_WRR; 224 else if (of_property_read_bool(tx_node, "snps,tx-sched-wfq")) 225 plat->tx_sched_algorithm = MTL_TX_ALGORITHM_WFQ; 226 else if (of_property_read_bool(tx_node, "snps,tx-sched-dwrr")) 227 plat->tx_sched_algorithm = MTL_TX_ALGORITHM_DWRR; 228 else if (of_property_read_bool(tx_node, "snps,tx-sched-sp")) 229 plat->tx_sched_algorithm = MTL_TX_ALGORITHM_SP; 230 else 231 plat->tx_sched_algorithm = MTL_TX_ALGORITHM_SP; 232 233 queue = 0; 234 235 /* Processing individual TX queue config */ 236 for_each_child_of_node(tx_node, q_node) { 237 if (queue >= plat->tx_queues_to_use) 238 break; 239 240 if (of_property_read_u8(q_node, "snps,weight", 241 &plat->tx_queues_cfg[queue].weight)) 242 plat->tx_queues_cfg[queue].weight = 0x10 + queue; 243 244 if (of_property_read_bool(q_node, "snps,dcb-algorithm")) { 245 plat->tx_queues_cfg[queue].mode_to_use = MTL_QUEUE_DCB; 246 } else if (of_property_read_bool(q_node, 247 "snps,avb-algorithm")) { 248 plat->tx_queues_cfg[queue].mode_to_use = MTL_QUEUE_AVB; 249 250 /* Credit Base Shaper parameters used by AVB */ 251 if (of_property_read_u32(q_node, "snps,send_slope", 252 &plat->tx_queues_cfg[queue].send_slope)) 253 plat->tx_queues_cfg[queue].send_slope = 0x0; 254 if (of_property_read_u32(q_node, "snps,idle_slope", 255 &plat->tx_queues_cfg[queue].idle_slope)) 256 plat->tx_queues_cfg[queue].idle_slope = 0x0; 257 if (of_property_read_u32(q_node, "snps,high_credit", 258 &plat->tx_queues_cfg[queue].high_credit)) 259 plat->tx_queues_cfg[queue].high_credit = 0x0; 260 if (of_property_read_u32(q_node, "snps,low_credit", 261 &plat->tx_queues_cfg[queue].low_credit)) 262 plat->tx_queues_cfg[queue].low_credit = 0x0; 263 } else { 264 plat->tx_queues_cfg[queue].mode_to_use = MTL_QUEUE_DCB; 265 } 266 267 if (of_property_read_u32(q_node, "snps,priority", 268 &plat->tx_queues_cfg[queue].prio)) { 269 plat->tx_queues_cfg[queue].prio = 0; 270 plat->tx_queues_cfg[queue].use_prio = false; 271 } else { 272 plat->tx_queues_cfg[queue].use_prio = true; 273 } 274 275 queue++; 276 } 277 278 of_node_put(rx_node); 279 of_node_put(tx_node); 280 of_node_put(q_node); 281 } 282 283 /** 284 * stmmac_dt_phy - parse device-tree driver parameters to allocate PHY resources 285 * @plat: driver data platform structure 286 * @np: device tree node 287 * @dev: device pointer 288 * Description: 289 * The mdio bus will be allocated in case of a phy transceiver is on board; 290 * it will be NULL if the fixed-link is configured. 291 * If there is the "snps,dwmac-mdio" sub-node the mdio will be allocated 292 * in any case (for DSA, mdio must be registered even if fixed-link). 293 * The table below sums the supported configurations: 294 * ------------------------------- 295 * snps,phy-addr | Y 296 * ------------------------------- 297 * phy-handle | Y 298 * ------------------------------- 299 * fixed-link | N 300 * ------------------------------- 301 * snps,dwmac-mdio | 302 * even if | Y 303 * fixed-link | 304 * ------------------------------- 305 * 306 * It returns 0 in case of success otherwise -ENODEV. 307 */ 308 static int stmmac_dt_phy(struct plat_stmmacenet_data *plat, 309 struct device_node *np, struct device *dev) 310 { 311 bool mdio = true; 312 static const struct of_device_id need_mdio_ids[] = { 313 { .compatible = "snps,dwc-qos-ethernet-4.10" }, 314 { .compatible = "allwinner,sun8i-a83t-emac" }, 315 { .compatible = "allwinner,sun8i-h3-emac" }, 316 { .compatible = "allwinner,sun8i-v3s-emac" }, 317 { .compatible = "allwinner,sun50i-a64-emac" }, 318 }; 319 320 /* If phy-handle property is passed from DT, use it as the PHY */ 321 plat->phy_node = of_parse_phandle(np, "phy-handle", 0); 322 if (plat->phy_node) 323 dev_dbg(dev, "Found phy-handle subnode\n"); 324 325 /* If phy-handle is not specified, check if we have a fixed-phy */ 326 if (!plat->phy_node && of_phy_is_fixed_link(np)) { 327 if ((of_phy_register_fixed_link(np) < 0)) 328 return -ENODEV; 329 330 dev_dbg(dev, "Found fixed-link subnode\n"); 331 plat->phy_node = of_node_get(np); 332 mdio = false; 333 } 334 335 if (of_match_node(need_mdio_ids, np)) { 336 plat->mdio_node = of_get_child_by_name(np, "mdio"); 337 } else { 338 /** 339 * If snps,dwmac-mdio is passed from DT, always register 340 * the MDIO 341 */ 342 for_each_child_of_node(np, plat->mdio_node) { 343 if (of_device_is_compatible(plat->mdio_node, 344 "snps,dwmac-mdio")) 345 break; 346 } 347 } 348 349 if (plat->mdio_node) { 350 dev_dbg(dev, "Found MDIO subnode\n"); 351 mdio = true; 352 } 353 354 if (mdio) 355 plat->mdio_bus_data = 356 devm_kzalloc(dev, sizeof(struct stmmac_mdio_bus_data), 357 GFP_KERNEL); 358 return 0; 359 } 360 361 /** 362 * stmmac_probe_config_dt - parse device-tree driver parameters 363 * @pdev: platform_device structure 364 * @mac: MAC address to use 365 * Description: 366 * this function is to read the driver parameters from device-tree and 367 * set some private fields that will be used by the main at runtime. 368 */ 369 struct plat_stmmacenet_data * 370 stmmac_probe_config_dt(struct platform_device *pdev, const char **mac) 371 { 372 struct device_node *np = pdev->dev.of_node; 373 struct plat_stmmacenet_data *plat; 374 struct stmmac_dma_cfg *dma_cfg; 375 376 plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL); 377 if (!plat) 378 return ERR_PTR(-ENOMEM); 379 380 *mac = of_get_mac_address(np); 381 plat->interface = of_get_phy_mode(np); 382 383 /* Get max speed of operation from device tree */ 384 if (of_property_read_u32(np, "max-speed", &plat->max_speed)) 385 plat->max_speed = -1; 386 387 plat->bus_id = of_alias_get_id(np, "ethernet"); 388 if (plat->bus_id < 0) 389 plat->bus_id = 0; 390 391 /* Default to phy auto-detection */ 392 plat->phy_addr = -1; 393 394 /* "snps,phy-addr" is not a standard property. Mark it as deprecated 395 * and warn of its use. Remove this when phy node support is added. 396 */ 397 if (of_property_read_u32(np, "snps,phy-addr", &plat->phy_addr) == 0) 398 dev_warn(&pdev->dev, "snps,phy-addr property is deprecated\n"); 399 400 /* To Configure PHY by using all device-tree supported properties */ 401 if (stmmac_dt_phy(plat, np, &pdev->dev)) 402 return ERR_PTR(-ENODEV); 403 404 of_property_read_u32(np, "tx-fifo-depth", &plat->tx_fifo_size); 405 406 of_property_read_u32(np, "rx-fifo-depth", &plat->rx_fifo_size); 407 408 plat->force_sf_dma_mode = 409 of_property_read_bool(np, "snps,force_sf_dma_mode"); 410 411 plat->en_tx_lpi_clockgating = 412 of_property_read_bool(np, "snps,en-tx-lpi-clockgating"); 413 414 /* Set the maxmtu to a default of JUMBO_LEN in case the 415 * parameter is not present in the device tree. 416 */ 417 plat->maxmtu = JUMBO_LEN; 418 419 /* Set default value for multicast hash bins */ 420 plat->multicast_filter_bins = HASH_TABLE_SIZE; 421 422 /* Set default value for unicast filter entries */ 423 plat->unicast_filter_entries = 1; 424 425 /* 426 * Currently only the properties needed on SPEAr600 427 * are provided. All other properties should be added 428 * once needed on other platforms. 429 */ 430 if (of_device_is_compatible(np, "st,spear600-gmac") || 431 of_device_is_compatible(np, "snps,dwmac-3.50a") || 432 of_device_is_compatible(np, "snps,dwmac-3.70a") || 433 of_device_is_compatible(np, "snps,dwmac")) { 434 /* Note that the max-frame-size parameter as defined in the 435 * ePAPR v1.1 spec is defined as max-frame-size, it's 436 * actually used as the IEEE definition of MAC Client 437 * data, or MTU. The ePAPR specification is confusing as 438 * the definition is max-frame-size, but usage examples 439 * are clearly MTUs 440 */ 441 of_property_read_u32(np, "max-frame-size", &plat->maxmtu); 442 of_property_read_u32(np, "snps,multicast-filter-bins", 443 &plat->multicast_filter_bins); 444 of_property_read_u32(np, "snps,perfect-filter-entries", 445 &plat->unicast_filter_entries); 446 plat->unicast_filter_entries = dwmac1000_validate_ucast_entries( 447 plat->unicast_filter_entries); 448 plat->multicast_filter_bins = dwmac1000_validate_mcast_bins( 449 plat->multicast_filter_bins); 450 plat->has_gmac = 1; 451 plat->pmt = 1; 452 } 453 454 if (of_device_is_compatible(np, "snps,dwmac-4.00") || 455 of_device_is_compatible(np, "snps,dwmac-4.10a")) { 456 plat->has_gmac4 = 1; 457 plat->has_gmac = 0; 458 plat->pmt = 1; 459 plat->tso_en = of_property_read_bool(np, "snps,tso"); 460 } 461 462 if (of_device_is_compatible(np, "snps,dwmac-3.610") || 463 of_device_is_compatible(np, "snps,dwmac-3.710")) { 464 plat->enh_desc = 1; 465 plat->bugged_jumbo = 1; 466 plat->force_sf_dma_mode = 1; 467 } 468 469 dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg), 470 GFP_KERNEL); 471 if (!dma_cfg) { 472 stmmac_remove_config_dt(pdev, plat); 473 return ERR_PTR(-ENOMEM); 474 } 475 plat->dma_cfg = dma_cfg; 476 477 of_property_read_u32(np, "snps,pbl", &dma_cfg->pbl); 478 if (!dma_cfg->pbl) 479 dma_cfg->pbl = DEFAULT_DMA_PBL; 480 of_property_read_u32(np, "snps,txpbl", &dma_cfg->txpbl); 481 of_property_read_u32(np, "snps,rxpbl", &dma_cfg->rxpbl); 482 dma_cfg->pblx8 = !of_property_read_bool(np, "snps,no-pbl-x8"); 483 484 dma_cfg->aal = of_property_read_bool(np, "snps,aal"); 485 dma_cfg->fixed_burst = of_property_read_bool(np, "snps,fixed-burst"); 486 dma_cfg->mixed_burst = of_property_read_bool(np, "snps,mixed-burst"); 487 488 plat->force_thresh_dma_mode = of_property_read_bool(np, "snps,force_thresh_dma_mode"); 489 if (plat->force_thresh_dma_mode) { 490 plat->force_sf_dma_mode = 0; 491 pr_warn("force_sf_dma_mode is ignored if force_thresh_dma_mode is set."); 492 } 493 494 of_property_read_u32(np, "snps,ps-speed", &plat->mac_port_sel_speed); 495 496 plat->axi = stmmac_axi_setup(pdev); 497 498 stmmac_mtl_setup(pdev, plat); 499 500 /* clock setup */ 501 plat->stmmac_clk = devm_clk_get(&pdev->dev, 502 STMMAC_RESOURCE_NAME); 503 if (IS_ERR(plat->stmmac_clk)) { 504 dev_warn(&pdev->dev, "Cannot get CSR clock\n"); 505 plat->stmmac_clk = NULL; 506 } 507 clk_prepare_enable(plat->stmmac_clk); 508 509 plat->pclk = devm_clk_get(&pdev->dev, "pclk"); 510 if (IS_ERR(plat->pclk)) { 511 if (PTR_ERR(plat->pclk) == -EPROBE_DEFER) 512 goto error_pclk_get; 513 514 plat->pclk = NULL; 515 } 516 clk_prepare_enable(plat->pclk); 517 518 /* Fall-back to main clock in case of no PTP ref is passed */ 519 plat->clk_ptp_ref = devm_clk_get(&pdev->dev, "ptp_ref"); 520 if (IS_ERR(plat->clk_ptp_ref)) { 521 plat->clk_ptp_rate = clk_get_rate(plat->stmmac_clk); 522 plat->clk_ptp_ref = NULL; 523 dev_warn(&pdev->dev, "PTP uses main clock\n"); 524 } else { 525 plat->clk_ptp_rate = clk_get_rate(plat->clk_ptp_ref); 526 dev_dbg(&pdev->dev, "PTP rate %d\n", plat->clk_ptp_rate); 527 } 528 529 plat->stmmac_rst = devm_reset_control_get(&pdev->dev, 530 STMMAC_RESOURCE_NAME); 531 if (IS_ERR(plat->stmmac_rst)) { 532 if (PTR_ERR(plat->stmmac_rst) == -EPROBE_DEFER) 533 goto error_hw_init; 534 535 dev_info(&pdev->dev, "no reset control found\n"); 536 plat->stmmac_rst = NULL; 537 } 538 539 return plat; 540 541 error_hw_init: 542 clk_disable_unprepare(plat->pclk); 543 error_pclk_get: 544 clk_disable_unprepare(plat->stmmac_clk); 545 546 return ERR_PTR(-EPROBE_DEFER); 547 } 548 549 /** 550 * stmmac_remove_config_dt - undo the effects of stmmac_probe_config_dt() 551 * @pdev: platform_device structure 552 * @plat: driver data platform structure 553 * 554 * Release resources claimed by stmmac_probe_config_dt(). 555 */ 556 void stmmac_remove_config_dt(struct platform_device *pdev, 557 struct plat_stmmacenet_data *plat) 558 { 559 struct device_node *np = pdev->dev.of_node; 560 561 if (of_phy_is_fixed_link(np)) 562 of_phy_deregister_fixed_link(np); 563 of_node_put(plat->phy_node); 564 of_node_put(plat->mdio_node); 565 } 566 #else 567 struct plat_stmmacenet_data * 568 stmmac_probe_config_dt(struct platform_device *pdev, const char **mac) 569 { 570 return ERR_PTR(-EINVAL); 571 } 572 573 void stmmac_remove_config_dt(struct platform_device *pdev, 574 struct plat_stmmacenet_data *plat) 575 { 576 } 577 #endif /* CONFIG_OF */ 578 EXPORT_SYMBOL_GPL(stmmac_probe_config_dt); 579 EXPORT_SYMBOL_GPL(stmmac_remove_config_dt); 580 581 int stmmac_get_platform_resources(struct platform_device *pdev, 582 struct stmmac_resources *stmmac_res) 583 { 584 struct resource *res; 585 586 memset(stmmac_res, 0, sizeof(*stmmac_res)); 587 588 /* Get IRQ information early to have an ability to ask for deferred 589 * probe if needed before we went too far with resource allocation. 590 */ 591 stmmac_res->irq = platform_get_irq_byname(pdev, "macirq"); 592 if (stmmac_res->irq < 0) { 593 if (stmmac_res->irq != -EPROBE_DEFER) { 594 dev_err(&pdev->dev, 595 "MAC IRQ configuration information not found\n"); 596 } 597 return stmmac_res->irq; 598 } 599 600 /* On some platforms e.g. SPEAr the wake up irq differs from the mac irq 601 * The external wake up irq can be passed through the platform code 602 * named as "eth_wake_irq" 603 * 604 * In case the wake up interrupt is not passed from the platform 605 * so the driver will continue to use the mac irq (ndev->irq) 606 */ 607 stmmac_res->wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq"); 608 if (stmmac_res->wol_irq < 0) { 609 if (stmmac_res->wol_irq == -EPROBE_DEFER) 610 return -EPROBE_DEFER; 611 stmmac_res->wol_irq = stmmac_res->irq; 612 } 613 614 stmmac_res->lpi_irq = platform_get_irq_byname(pdev, "eth_lpi"); 615 if (stmmac_res->lpi_irq == -EPROBE_DEFER) 616 return -EPROBE_DEFER; 617 618 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 619 stmmac_res->addr = devm_ioremap_resource(&pdev->dev, res); 620 621 return PTR_ERR_OR_ZERO(stmmac_res->addr); 622 } 623 EXPORT_SYMBOL_GPL(stmmac_get_platform_resources); 624 625 /** 626 * stmmac_pltfr_remove 627 * @pdev: platform device pointer 628 * Description: this function calls the main to free the net resources 629 * and calls the platforms hook and release the resources (e.g. mem). 630 */ 631 int stmmac_pltfr_remove(struct platform_device *pdev) 632 { 633 struct net_device *ndev = platform_get_drvdata(pdev); 634 struct stmmac_priv *priv = netdev_priv(ndev); 635 struct plat_stmmacenet_data *plat = priv->plat; 636 int ret = stmmac_dvr_remove(&pdev->dev); 637 638 if (plat->exit) 639 plat->exit(pdev, plat->bsp_priv); 640 641 stmmac_remove_config_dt(pdev, plat); 642 643 return ret; 644 } 645 EXPORT_SYMBOL_GPL(stmmac_pltfr_remove); 646 647 #ifdef CONFIG_PM_SLEEP 648 /** 649 * stmmac_pltfr_suspend 650 * @dev: device pointer 651 * Description: this function is invoked when suspend the driver and it direcly 652 * call the main suspend function and then, if required, on some platform, it 653 * can call an exit helper. 654 */ 655 static int stmmac_pltfr_suspend(struct device *dev) 656 { 657 int ret; 658 struct net_device *ndev = dev_get_drvdata(dev); 659 struct stmmac_priv *priv = netdev_priv(ndev); 660 struct platform_device *pdev = to_platform_device(dev); 661 662 ret = stmmac_suspend(dev); 663 if (priv->plat->exit) 664 priv->plat->exit(pdev, priv->plat->bsp_priv); 665 666 return ret; 667 } 668 669 /** 670 * stmmac_pltfr_resume 671 * @dev: device pointer 672 * Description: this function is invoked when resume the driver before calling 673 * the main resume function, on some platforms, it can call own init helper 674 * if required. 675 */ 676 static int stmmac_pltfr_resume(struct device *dev) 677 { 678 struct net_device *ndev = dev_get_drvdata(dev); 679 struct stmmac_priv *priv = netdev_priv(ndev); 680 struct platform_device *pdev = to_platform_device(dev); 681 682 if (priv->plat->init) 683 priv->plat->init(pdev, priv->plat->bsp_priv); 684 685 return stmmac_resume(dev); 686 } 687 #endif /* CONFIG_PM_SLEEP */ 688 689 SIMPLE_DEV_PM_OPS(stmmac_pltfr_pm_ops, stmmac_pltfr_suspend, 690 stmmac_pltfr_resume); 691 EXPORT_SYMBOL_GPL(stmmac_pltfr_pm_ops); 692 693 MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet platform support"); 694 MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>"); 695 MODULE_LICENSE("GPL"); 696