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; 312 313 /* If phy-handle property is passed from DT, use it as the PHY */ 314 plat->phy_node = of_parse_phandle(np, "phy-handle", 0); 315 if (plat->phy_node) 316 dev_dbg(dev, "Found phy-handle subnode\n"); 317 318 /* If phy-handle is not specified, check if we have a fixed-phy */ 319 if (!plat->phy_node && of_phy_is_fixed_link(np)) { 320 if ((of_phy_register_fixed_link(np) < 0)) 321 return -ENODEV; 322 323 dev_dbg(dev, "Found fixed-link subnode\n"); 324 plat->phy_node = of_node_get(np); 325 mdio = false; 326 } 327 328 /* exception for dwmac-dwc-qos-eth glue logic */ 329 if (of_device_is_compatible(np, "snps,dwc-qos-ethernet-4.10")) { 330 plat->mdio_node = of_get_child_by_name(np, "mdio"); 331 } else { 332 /** 333 * If snps,dwmac-mdio is passed from DT, always register 334 * the MDIO 335 */ 336 for_each_child_of_node(np, plat->mdio_node) { 337 if (of_device_is_compatible(plat->mdio_node, 338 "snps,dwmac-mdio")) 339 break; 340 } 341 } 342 343 if (plat->mdio_node) { 344 dev_dbg(dev, "Found MDIO subnode\n"); 345 mdio = true; 346 } 347 348 if (mdio) 349 plat->mdio_bus_data = 350 devm_kzalloc(dev, sizeof(struct stmmac_mdio_bus_data), 351 GFP_KERNEL); 352 return 0; 353 } 354 355 /** 356 * stmmac_probe_config_dt - parse device-tree driver parameters 357 * @pdev: platform_device structure 358 * @mac: MAC address to use 359 * Description: 360 * this function is to read the driver parameters from device-tree and 361 * set some private fields that will be used by the main at runtime. 362 */ 363 struct plat_stmmacenet_data * 364 stmmac_probe_config_dt(struct platform_device *pdev, const char **mac) 365 { 366 struct device_node *np = pdev->dev.of_node; 367 struct plat_stmmacenet_data *plat; 368 struct stmmac_dma_cfg *dma_cfg; 369 370 plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL); 371 if (!plat) 372 return ERR_PTR(-ENOMEM); 373 374 *mac = of_get_mac_address(np); 375 plat->interface = of_get_phy_mode(np); 376 377 /* Get max speed of operation from device tree */ 378 if (of_property_read_u32(np, "max-speed", &plat->max_speed)) 379 plat->max_speed = -1; 380 381 plat->bus_id = of_alias_get_id(np, "ethernet"); 382 if (plat->bus_id < 0) 383 plat->bus_id = 0; 384 385 /* Default to phy auto-detection */ 386 plat->phy_addr = -1; 387 388 /* "snps,phy-addr" is not a standard property. Mark it as deprecated 389 * and warn of its use. Remove this when phy node support is added. 390 */ 391 if (of_property_read_u32(np, "snps,phy-addr", &plat->phy_addr) == 0) 392 dev_warn(&pdev->dev, "snps,phy-addr property is deprecated\n"); 393 394 /* To Configure PHY by using all device-tree supported properties */ 395 if (stmmac_dt_phy(plat, np, &pdev->dev)) 396 return ERR_PTR(-ENODEV); 397 398 of_property_read_u32(np, "tx-fifo-depth", &plat->tx_fifo_size); 399 400 of_property_read_u32(np, "rx-fifo-depth", &plat->rx_fifo_size); 401 402 plat->force_sf_dma_mode = 403 of_property_read_bool(np, "snps,force_sf_dma_mode"); 404 405 plat->en_tx_lpi_clockgating = 406 of_property_read_bool(np, "snps,en-tx-lpi-clockgating"); 407 408 /* Set the maxmtu to a default of JUMBO_LEN in case the 409 * parameter is not present in the device tree. 410 */ 411 plat->maxmtu = JUMBO_LEN; 412 413 /* Set default value for multicast hash bins */ 414 plat->multicast_filter_bins = HASH_TABLE_SIZE; 415 416 /* Set default value for unicast filter entries */ 417 plat->unicast_filter_entries = 1; 418 419 /* 420 * Currently only the properties needed on SPEAr600 421 * are provided. All other properties should be added 422 * once needed on other platforms. 423 */ 424 if (of_device_is_compatible(np, "st,spear600-gmac") || 425 of_device_is_compatible(np, "snps,dwmac-3.50a") || 426 of_device_is_compatible(np, "snps,dwmac-3.70a") || 427 of_device_is_compatible(np, "snps,dwmac")) { 428 /* Note that the max-frame-size parameter as defined in the 429 * ePAPR v1.1 spec is defined as max-frame-size, it's 430 * actually used as the IEEE definition of MAC Client 431 * data, or MTU. The ePAPR specification is confusing as 432 * the definition is max-frame-size, but usage examples 433 * are clearly MTUs 434 */ 435 of_property_read_u32(np, "max-frame-size", &plat->maxmtu); 436 of_property_read_u32(np, "snps,multicast-filter-bins", 437 &plat->multicast_filter_bins); 438 of_property_read_u32(np, "snps,perfect-filter-entries", 439 &plat->unicast_filter_entries); 440 plat->unicast_filter_entries = dwmac1000_validate_ucast_entries( 441 plat->unicast_filter_entries); 442 plat->multicast_filter_bins = dwmac1000_validate_mcast_bins( 443 plat->multicast_filter_bins); 444 plat->has_gmac = 1; 445 plat->pmt = 1; 446 } 447 448 if (of_device_is_compatible(np, "snps,dwmac-4.00") || 449 of_device_is_compatible(np, "snps,dwmac-4.10a")) { 450 plat->has_gmac4 = 1; 451 plat->has_gmac = 0; 452 plat->pmt = 1; 453 plat->tso_en = of_property_read_bool(np, "snps,tso"); 454 } 455 456 if (of_device_is_compatible(np, "snps,dwmac-3.610") || 457 of_device_is_compatible(np, "snps,dwmac-3.710")) { 458 plat->enh_desc = 1; 459 plat->bugged_jumbo = 1; 460 plat->force_sf_dma_mode = 1; 461 } 462 463 dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg), 464 GFP_KERNEL); 465 if (!dma_cfg) { 466 stmmac_remove_config_dt(pdev, plat); 467 return ERR_PTR(-ENOMEM); 468 } 469 plat->dma_cfg = dma_cfg; 470 471 of_property_read_u32(np, "snps,pbl", &dma_cfg->pbl); 472 if (!dma_cfg->pbl) 473 dma_cfg->pbl = DEFAULT_DMA_PBL; 474 of_property_read_u32(np, "snps,txpbl", &dma_cfg->txpbl); 475 of_property_read_u32(np, "snps,rxpbl", &dma_cfg->rxpbl); 476 dma_cfg->pblx8 = !of_property_read_bool(np, "snps,no-pbl-x8"); 477 478 dma_cfg->aal = of_property_read_bool(np, "snps,aal"); 479 dma_cfg->fixed_burst = of_property_read_bool(np, "snps,fixed-burst"); 480 dma_cfg->mixed_burst = of_property_read_bool(np, "snps,mixed-burst"); 481 482 plat->force_thresh_dma_mode = of_property_read_bool(np, "snps,force_thresh_dma_mode"); 483 if (plat->force_thresh_dma_mode) { 484 plat->force_sf_dma_mode = 0; 485 pr_warn("force_sf_dma_mode is ignored if force_thresh_dma_mode is set."); 486 } 487 488 of_property_read_u32(np, "snps,ps-speed", &plat->mac_port_sel_speed); 489 490 plat->axi = stmmac_axi_setup(pdev); 491 492 stmmac_mtl_setup(pdev, plat); 493 494 /* clock setup */ 495 plat->stmmac_clk = devm_clk_get(&pdev->dev, 496 STMMAC_RESOURCE_NAME); 497 if (IS_ERR(plat->stmmac_clk)) { 498 dev_warn(&pdev->dev, "Cannot get CSR clock\n"); 499 plat->stmmac_clk = NULL; 500 } 501 clk_prepare_enable(plat->stmmac_clk); 502 503 plat->pclk = devm_clk_get(&pdev->dev, "pclk"); 504 if (IS_ERR(plat->pclk)) { 505 if (PTR_ERR(plat->pclk) == -EPROBE_DEFER) 506 goto error_pclk_get; 507 508 plat->pclk = NULL; 509 } 510 clk_prepare_enable(plat->pclk); 511 512 /* Fall-back to main clock in case of no PTP ref is passed */ 513 plat->clk_ptp_ref = devm_clk_get(&pdev->dev, "ptp_ref"); 514 if (IS_ERR(plat->clk_ptp_ref)) { 515 plat->clk_ptp_rate = clk_get_rate(plat->stmmac_clk); 516 plat->clk_ptp_ref = NULL; 517 dev_warn(&pdev->dev, "PTP uses main clock\n"); 518 } else { 519 plat->clk_ptp_rate = clk_get_rate(plat->clk_ptp_ref); 520 dev_dbg(&pdev->dev, "PTP rate %d\n", plat->clk_ptp_rate); 521 } 522 523 plat->stmmac_rst = devm_reset_control_get(&pdev->dev, 524 STMMAC_RESOURCE_NAME); 525 if (IS_ERR(plat->stmmac_rst)) { 526 if (PTR_ERR(plat->stmmac_rst) == -EPROBE_DEFER) 527 goto error_hw_init; 528 529 dev_info(&pdev->dev, "no reset control found\n"); 530 plat->stmmac_rst = NULL; 531 } 532 533 return plat; 534 535 error_hw_init: 536 clk_disable_unprepare(plat->pclk); 537 error_pclk_get: 538 clk_disable_unprepare(plat->stmmac_clk); 539 540 return ERR_PTR(-EPROBE_DEFER); 541 } 542 543 /** 544 * stmmac_remove_config_dt - undo the effects of stmmac_probe_config_dt() 545 * @pdev: platform_device structure 546 * @plat: driver data platform structure 547 * 548 * Release resources claimed by stmmac_probe_config_dt(). 549 */ 550 void stmmac_remove_config_dt(struct platform_device *pdev, 551 struct plat_stmmacenet_data *plat) 552 { 553 struct device_node *np = pdev->dev.of_node; 554 555 if (of_phy_is_fixed_link(np)) 556 of_phy_deregister_fixed_link(np); 557 of_node_put(plat->phy_node); 558 of_node_put(plat->mdio_node); 559 } 560 #else 561 struct plat_stmmacenet_data * 562 stmmac_probe_config_dt(struct platform_device *pdev, const char **mac) 563 { 564 return ERR_PTR(-EINVAL); 565 } 566 567 void stmmac_remove_config_dt(struct platform_device *pdev, 568 struct plat_stmmacenet_data *plat) 569 { 570 } 571 #endif /* CONFIG_OF */ 572 EXPORT_SYMBOL_GPL(stmmac_probe_config_dt); 573 EXPORT_SYMBOL_GPL(stmmac_remove_config_dt); 574 575 int stmmac_get_platform_resources(struct platform_device *pdev, 576 struct stmmac_resources *stmmac_res) 577 { 578 struct resource *res; 579 580 memset(stmmac_res, 0, sizeof(*stmmac_res)); 581 582 /* Get IRQ information early to have an ability to ask for deferred 583 * probe if needed before we went too far with resource allocation. 584 */ 585 stmmac_res->irq = platform_get_irq_byname(pdev, "macirq"); 586 if (stmmac_res->irq < 0) { 587 if (stmmac_res->irq != -EPROBE_DEFER) { 588 dev_err(&pdev->dev, 589 "MAC IRQ configuration information not found\n"); 590 } 591 return stmmac_res->irq; 592 } 593 594 /* On some platforms e.g. SPEAr the wake up irq differs from the mac irq 595 * The external wake up irq can be passed through the platform code 596 * named as "eth_wake_irq" 597 * 598 * In case the wake up interrupt is not passed from the platform 599 * so the driver will continue to use the mac irq (ndev->irq) 600 */ 601 stmmac_res->wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq"); 602 if (stmmac_res->wol_irq < 0) { 603 if (stmmac_res->wol_irq == -EPROBE_DEFER) 604 return -EPROBE_DEFER; 605 stmmac_res->wol_irq = stmmac_res->irq; 606 } 607 608 stmmac_res->lpi_irq = platform_get_irq_byname(pdev, "eth_lpi"); 609 if (stmmac_res->lpi_irq == -EPROBE_DEFER) 610 return -EPROBE_DEFER; 611 612 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 613 stmmac_res->addr = devm_ioremap_resource(&pdev->dev, res); 614 615 return PTR_ERR_OR_ZERO(stmmac_res->addr); 616 } 617 EXPORT_SYMBOL_GPL(stmmac_get_platform_resources); 618 619 /** 620 * stmmac_pltfr_remove 621 * @pdev: platform device pointer 622 * Description: this function calls the main to free the net resources 623 * and calls the platforms hook and release the resources (e.g. mem). 624 */ 625 int stmmac_pltfr_remove(struct platform_device *pdev) 626 { 627 struct net_device *ndev = platform_get_drvdata(pdev); 628 struct stmmac_priv *priv = netdev_priv(ndev); 629 struct plat_stmmacenet_data *plat = priv->plat; 630 int ret = stmmac_dvr_remove(&pdev->dev); 631 632 if (plat->exit) 633 plat->exit(pdev, plat->bsp_priv); 634 635 stmmac_remove_config_dt(pdev, plat); 636 637 return ret; 638 } 639 EXPORT_SYMBOL_GPL(stmmac_pltfr_remove); 640 641 #ifdef CONFIG_PM_SLEEP 642 /** 643 * stmmac_pltfr_suspend 644 * @dev: device pointer 645 * Description: this function is invoked when suspend the driver and it direcly 646 * call the main suspend function and then, if required, on some platform, it 647 * can call an exit helper. 648 */ 649 static int stmmac_pltfr_suspend(struct device *dev) 650 { 651 int ret; 652 struct net_device *ndev = dev_get_drvdata(dev); 653 struct stmmac_priv *priv = netdev_priv(ndev); 654 struct platform_device *pdev = to_platform_device(dev); 655 656 ret = stmmac_suspend(dev); 657 if (priv->plat->exit) 658 priv->plat->exit(pdev, priv->plat->bsp_priv); 659 660 return ret; 661 } 662 663 /** 664 * stmmac_pltfr_resume 665 * @dev: device pointer 666 * Description: this function is invoked when resume the driver before calling 667 * the main resume function, on some platforms, it can call own init helper 668 * if required. 669 */ 670 static int stmmac_pltfr_resume(struct device *dev) 671 { 672 struct net_device *ndev = dev_get_drvdata(dev); 673 struct stmmac_priv *priv = netdev_priv(ndev); 674 struct platform_device *pdev = to_platform_device(dev); 675 676 if (priv->plat->init) 677 priv->plat->init(pdev, priv->plat->bsp_priv); 678 679 return stmmac_resume(dev); 680 } 681 #endif /* CONFIG_PM_SLEEP */ 682 683 SIMPLE_DEV_PM_OPS(stmmac_pltfr_pm_ops, stmmac_pltfr_suspend, 684 stmmac_pltfr_resume); 685 EXPORT_SYMBOL_GPL(stmmac_pltfr_pm_ops); 686 687 MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet platform support"); 688 MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>"); 689 MODULE_LICENSE("GPL"); 690