1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * aQuantia Corporation Network Driver 4 * Copyright (C) 2014-2019 aQuantia Corporation. All rights reserved 5 */ 6 7 /* File aq_pci_func.c: Definition of PCI functions. */ 8 9 #include <linux/interrupt.h> 10 #include <linux/module.h> 11 12 #include "aq_main.h" 13 #include "aq_nic.h" 14 #include "aq_vec.h" 15 #include "aq_hw.h" 16 #include "aq_pci_func.h" 17 #include "hw_atl/hw_atl_a0.h" 18 #include "hw_atl/hw_atl_b0.h" 19 #include "hw_atl2/hw_atl2.h" 20 #include "aq_filters.h" 21 #include "aq_drvinfo.h" 22 #include "aq_macsec.h" 23 24 static const struct pci_device_id aq_pci_tbl[] = { 25 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_0001), }, 26 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_D100), }, 27 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_D107), }, 28 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_D108), }, 29 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_D109), }, 30 31 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC100), }, 32 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC107), }, 33 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC108), }, 34 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC109), }, 35 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC111), }, 36 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC112), }, 37 38 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC100S), }, 39 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC107S), }, 40 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC108S), }, 41 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC109S), }, 42 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC111S), }, 43 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC112S), }, 44 45 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC113DEV), }, 46 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC113CS), }, 47 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC114CS), }, 48 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC113), }, 49 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC113C), }, 50 { PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_AQC115C), }, 51 52 {} 53 }; 54 55 static const struct aq_board_revision_s hw_atl_boards[] = { 56 { AQ_DEVICE_ID_0001, AQ_HWREV_1, &hw_atl_ops_a0, &hw_atl_a0_caps_aqc107, }, 57 { AQ_DEVICE_ID_D100, AQ_HWREV_1, &hw_atl_ops_a0, &hw_atl_a0_caps_aqc100, }, 58 { AQ_DEVICE_ID_D107, AQ_HWREV_1, &hw_atl_ops_a0, &hw_atl_a0_caps_aqc107, }, 59 { AQ_DEVICE_ID_D108, AQ_HWREV_1, &hw_atl_ops_a0, &hw_atl_a0_caps_aqc108, }, 60 { AQ_DEVICE_ID_D109, AQ_HWREV_1, &hw_atl_ops_a0, &hw_atl_a0_caps_aqc109, }, 61 62 { AQ_DEVICE_ID_0001, AQ_HWREV_2, &hw_atl_ops_b0, &hw_atl_b0_caps_aqc107, }, 63 { AQ_DEVICE_ID_D100, AQ_HWREV_2, &hw_atl_ops_b0, &hw_atl_b0_caps_aqc100, }, 64 { AQ_DEVICE_ID_D107, AQ_HWREV_2, &hw_atl_ops_b0, &hw_atl_b0_caps_aqc107, }, 65 { AQ_DEVICE_ID_D108, AQ_HWREV_2, &hw_atl_ops_b0, &hw_atl_b0_caps_aqc108, }, 66 { AQ_DEVICE_ID_D109, AQ_HWREV_2, &hw_atl_ops_b0, &hw_atl_b0_caps_aqc109, }, 67 68 { AQ_DEVICE_ID_AQC100, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc100, }, 69 { AQ_DEVICE_ID_AQC107, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc107, }, 70 { AQ_DEVICE_ID_AQC108, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc108, }, 71 { AQ_DEVICE_ID_AQC109, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc109, }, 72 { AQ_DEVICE_ID_AQC111, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc111, }, 73 { AQ_DEVICE_ID_AQC112, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc112, }, 74 75 { AQ_DEVICE_ID_AQC100S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc100s, }, 76 { AQ_DEVICE_ID_AQC107S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc107s, }, 77 { AQ_DEVICE_ID_AQC108S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc108s, }, 78 { AQ_DEVICE_ID_AQC109S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc109s, }, 79 { AQ_DEVICE_ID_AQC111S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc111s, }, 80 { AQ_DEVICE_ID_AQC112S, AQ_HWREV_ANY, &hw_atl_ops_b1, &hw_atl_b0_caps_aqc112s, }, 81 82 { AQ_DEVICE_ID_AQC113DEV, AQ_HWREV_ANY, &hw_atl2_ops, &hw_atl2_caps_aqc113, }, 83 { AQ_DEVICE_ID_AQC113, AQ_HWREV_ANY, &hw_atl2_ops, &hw_atl2_caps_aqc113, }, 84 { AQ_DEVICE_ID_AQC113CS, AQ_HWREV_ANY, &hw_atl2_ops, &hw_atl2_caps_aqc113, }, 85 { AQ_DEVICE_ID_AQC114CS, AQ_HWREV_ANY, &hw_atl2_ops, &hw_atl2_caps_aqc113, }, 86 { AQ_DEVICE_ID_AQC113C, AQ_HWREV_ANY, &hw_atl2_ops, &hw_atl2_caps_aqc113, }, 87 { AQ_DEVICE_ID_AQC115C, AQ_HWREV_ANY, &hw_atl2_ops, &hw_atl2_caps_aqc113, }, 88 }; 89 90 MODULE_DEVICE_TABLE(pci, aq_pci_tbl); 91 92 static int aq_pci_probe_get_hw_by_id(struct pci_dev *pdev, 93 const struct aq_hw_ops **ops, 94 const struct aq_hw_caps_s **caps) 95 { 96 int i; 97 98 if (pdev->vendor != PCI_VENDOR_ID_AQUANTIA) 99 return -EINVAL; 100 101 for (i = 0; i < ARRAY_SIZE(hw_atl_boards); i++) { 102 if (hw_atl_boards[i].devid == pdev->device && 103 (hw_atl_boards[i].revision == AQ_HWREV_ANY || 104 hw_atl_boards[i].revision == pdev->revision)) { 105 *ops = hw_atl_boards[i].ops; 106 *caps = hw_atl_boards[i].caps; 107 break; 108 } 109 } 110 111 if (i == ARRAY_SIZE(hw_atl_boards)) 112 return -EINVAL; 113 114 return 0; 115 } 116 117 int aq_pci_func_init(struct pci_dev *pdev) 118 { 119 int err; 120 121 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 122 if (!err) 123 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); 124 if (err) { 125 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 126 if (!err) 127 err = pci_set_consistent_dma_mask(pdev, 128 DMA_BIT_MASK(32)); 129 } 130 if (err != 0) { 131 err = -ENOSR; 132 goto err_exit; 133 } 134 135 err = pci_request_regions(pdev, AQ_CFG_DRV_NAME "_mmio"); 136 if (err < 0) 137 goto err_exit; 138 139 pci_set_master(pdev); 140 141 return 0; 142 143 err_exit: 144 return err; 145 } 146 147 int aq_pci_func_alloc_irq(struct aq_nic_s *self, unsigned int i, 148 char *name, irq_handler_t irq_handler, 149 void *irq_arg, cpumask_t *affinity_mask) 150 { 151 struct pci_dev *pdev = self->pdev; 152 int err; 153 154 if (pdev->msix_enabled || pdev->msi_enabled) 155 err = request_irq(pci_irq_vector(pdev, i), irq_handler, 0, 156 name, irq_arg); 157 else 158 err = request_irq(pci_irq_vector(pdev, i), aq_vec_isr_legacy, 159 IRQF_SHARED, name, irq_arg); 160 161 if (err >= 0) { 162 self->msix_entry_mask |= (1 << i); 163 164 if (pdev->msix_enabled && affinity_mask) 165 irq_set_affinity_hint(pci_irq_vector(pdev, i), 166 affinity_mask); 167 } 168 169 return err; 170 } 171 172 void aq_pci_func_free_irqs(struct aq_nic_s *self) 173 { 174 struct pci_dev *pdev = self->pdev; 175 unsigned int i; 176 void *irq_data; 177 178 for (i = 32U; i--;) { 179 if (!((1U << i) & self->msix_entry_mask)) 180 continue; 181 if (self->aq_nic_cfg.link_irq_vec && 182 i == self->aq_nic_cfg.link_irq_vec) 183 irq_data = self; 184 else if (i < AQ_CFG_VECS_MAX) 185 irq_data = self->aq_vec[i]; 186 else 187 continue; 188 189 if (pdev->msix_enabled) 190 irq_set_affinity_hint(pci_irq_vector(pdev, i), NULL); 191 free_irq(pci_irq_vector(pdev, i), irq_data); 192 self->msix_entry_mask &= ~(1U << i); 193 } 194 } 195 196 unsigned int aq_pci_func_get_irq_type(struct aq_nic_s *self) 197 { 198 if (self->pdev->msix_enabled) 199 return AQ_HW_IRQ_MSIX; 200 if (self->pdev->msi_enabled) 201 return AQ_HW_IRQ_MSI; 202 203 return AQ_HW_IRQ_LEGACY; 204 } 205 206 static void aq_pci_free_irq_vectors(struct aq_nic_s *self) 207 { 208 pci_free_irq_vectors(self->pdev); 209 } 210 211 static int aq_pci_probe(struct pci_dev *pdev, 212 const struct pci_device_id *pci_id) 213 { 214 struct net_device *ndev; 215 resource_size_t mmio_pa; 216 struct aq_nic_s *self; 217 u32 numvecs; 218 u32 bar; 219 int err; 220 221 err = pci_enable_device(pdev); 222 if (err) 223 return err; 224 225 err = aq_pci_func_init(pdev); 226 if (err) 227 goto err_pci_func; 228 229 ndev = aq_ndev_alloc(); 230 if (!ndev) { 231 err = -ENOMEM; 232 goto err_ndev; 233 } 234 235 self = netdev_priv(ndev); 236 self->pdev = pdev; 237 SET_NETDEV_DEV(ndev, &pdev->dev); 238 pci_set_drvdata(pdev, self); 239 240 mutex_init(&self->fwreq_mutex); 241 242 err = aq_pci_probe_get_hw_by_id(pdev, &self->aq_hw_ops, 243 &aq_nic_get_cfg(self)->aq_hw_caps); 244 if (err) 245 goto err_ioremap; 246 247 self->aq_hw = kzalloc(sizeof(*self->aq_hw), GFP_KERNEL); 248 if (!self->aq_hw) { 249 err = -ENOMEM; 250 goto err_ioremap; 251 } 252 self->aq_hw->aq_nic_cfg = aq_nic_get_cfg(self); 253 if (self->aq_hw->aq_nic_cfg->aq_hw_caps->priv_data_len) { 254 int len = self->aq_hw->aq_nic_cfg->aq_hw_caps->priv_data_len; 255 256 self->aq_hw->priv = kzalloc(len, GFP_KERNEL); 257 if (!self->aq_hw->priv) { 258 err = -ENOMEM; 259 goto err_free_aq_hw; 260 } 261 } 262 263 for (bar = 0; bar < 4; ++bar) { 264 if (IORESOURCE_MEM & pci_resource_flags(pdev, bar)) { 265 resource_size_t reg_sz; 266 267 mmio_pa = pci_resource_start(pdev, bar); 268 if (mmio_pa == 0U) { 269 err = -EIO; 270 goto err_free_aq_hw_priv; 271 } 272 273 reg_sz = pci_resource_len(pdev, bar); 274 if ((reg_sz <= 24 /*ATL_REGS_SIZE*/)) { 275 err = -EIO; 276 goto err_free_aq_hw_priv; 277 } 278 279 self->aq_hw->mmio = ioremap(mmio_pa, reg_sz); 280 if (!self->aq_hw->mmio) { 281 err = -EIO; 282 goto err_free_aq_hw_priv; 283 } 284 break; 285 } 286 } 287 288 if (bar == 4) { 289 err = -EIO; 290 goto err_free_aq_hw_priv; 291 } 292 293 numvecs = min((u8)AQ_CFG_VECS_DEF, 294 aq_nic_get_cfg(self)->aq_hw_caps->msix_irqs); 295 numvecs = min(numvecs, num_online_cpus()); 296 /* Request IRQ vector for PTP */ 297 numvecs += 1; 298 299 numvecs += AQ_HW_SERVICE_IRQS; 300 /*enable interrupts */ 301 #if !AQ_CFG_FORCE_LEGACY_INT 302 err = pci_alloc_irq_vectors(self->pdev, 1, numvecs, 303 PCI_IRQ_MSIX | PCI_IRQ_MSI | 304 PCI_IRQ_LEGACY); 305 306 if (err < 0) 307 goto err_hwinit; 308 numvecs = err; 309 #endif 310 self->irqvecs = numvecs; 311 312 /* net device init */ 313 aq_nic_cfg_start(self); 314 315 aq_nic_ndev_init(self); 316 317 err = aq_nic_ndev_register(self); 318 if (err < 0) 319 goto err_register; 320 321 aq_drvinfo_init(ndev); 322 323 return 0; 324 325 err_register: 326 aq_nic_free_vectors(self); 327 aq_pci_free_irq_vectors(self); 328 err_hwinit: 329 iounmap(self->aq_hw->mmio); 330 err_free_aq_hw_priv: 331 kfree(self->aq_hw->priv); 332 err_free_aq_hw: 333 kfree(self->aq_hw); 334 err_ioremap: 335 free_netdev(ndev); 336 err_ndev: 337 pci_release_regions(pdev); 338 err_pci_func: 339 pci_disable_device(pdev); 340 341 return err; 342 } 343 344 static void aq_pci_remove(struct pci_dev *pdev) 345 { 346 struct aq_nic_s *self = pci_get_drvdata(pdev); 347 348 if (self->ndev) { 349 aq_clear_rxnfc_all_rules(self); 350 if (self->ndev->reg_state == NETREG_REGISTERED) 351 unregister_netdev(self->ndev); 352 353 #if IS_ENABLED(CONFIG_MACSEC) 354 aq_macsec_free(self); 355 #endif 356 aq_nic_free_vectors(self); 357 aq_pci_free_irq_vectors(self); 358 iounmap(self->aq_hw->mmio); 359 kfree(self->aq_hw->priv); 360 kfree(self->aq_hw); 361 pci_release_regions(pdev); 362 free_netdev(self->ndev); 363 } 364 365 pci_disable_device(pdev); 366 } 367 368 static void aq_pci_shutdown(struct pci_dev *pdev) 369 { 370 struct aq_nic_s *self = pci_get_drvdata(pdev); 371 372 aq_nic_shutdown(self); 373 374 pci_disable_device(pdev); 375 376 if (system_state == SYSTEM_POWER_OFF) { 377 pci_wake_from_d3(pdev, false); 378 pci_set_power_state(pdev, PCI_D3hot); 379 } 380 } 381 382 static int aq_suspend_common(struct device *dev, bool deep) 383 { 384 struct aq_nic_s *nic = pci_get_drvdata(to_pci_dev(dev)); 385 386 rtnl_lock(); 387 388 nic->power_state = AQ_HW_POWER_STATE_D3; 389 netif_device_detach(nic->ndev); 390 netif_tx_stop_all_queues(nic->ndev); 391 392 if (netif_running(nic->ndev)) 393 aq_nic_stop(nic); 394 395 if (deep) { 396 aq_nic_deinit(nic, !nic->aq_hw->aq_nic_cfg->wol); 397 aq_nic_set_power(nic); 398 } 399 400 rtnl_unlock(); 401 402 return 0; 403 } 404 405 static int atl_resume_common(struct device *dev, bool deep) 406 { 407 struct pci_dev *pdev = to_pci_dev(dev); 408 struct aq_nic_s *nic; 409 int ret = 0; 410 411 nic = pci_get_drvdata(pdev); 412 413 rtnl_lock(); 414 415 pci_set_power_state(pdev, PCI_D0); 416 pci_restore_state(pdev); 417 418 if (deep) { 419 ret = aq_nic_init(nic); 420 if (ret) 421 goto err_exit; 422 } 423 424 if (netif_running(nic->ndev)) { 425 ret = aq_nic_start(nic); 426 if (ret) 427 goto err_exit; 428 } 429 430 netif_device_attach(nic->ndev); 431 netif_tx_start_all_queues(nic->ndev); 432 433 err_exit: 434 if (ret < 0) 435 aq_nic_deinit(nic, true); 436 437 rtnl_unlock(); 438 439 return ret; 440 } 441 442 static int aq_pm_freeze(struct device *dev) 443 { 444 return aq_suspend_common(dev, false); 445 } 446 447 static int aq_pm_suspend_poweroff(struct device *dev) 448 { 449 return aq_suspend_common(dev, true); 450 } 451 452 static int aq_pm_thaw(struct device *dev) 453 { 454 return atl_resume_common(dev, false); 455 } 456 457 static int aq_pm_resume_restore(struct device *dev) 458 { 459 return atl_resume_common(dev, true); 460 } 461 462 static const struct dev_pm_ops aq_pm_ops = { 463 .suspend = aq_pm_suspend_poweroff, 464 .poweroff = aq_pm_suspend_poweroff, 465 .freeze = aq_pm_freeze, 466 .resume = aq_pm_resume_restore, 467 .restore = aq_pm_resume_restore, 468 .thaw = aq_pm_thaw, 469 }; 470 471 static struct pci_driver aq_pci_ops = { 472 .name = AQ_CFG_DRV_NAME, 473 .id_table = aq_pci_tbl, 474 .probe = aq_pci_probe, 475 .remove = aq_pci_remove, 476 .shutdown = aq_pci_shutdown, 477 #ifdef CONFIG_PM 478 .driver.pm = &aq_pm_ops, 479 #endif 480 }; 481 482 int aq_pci_func_register_driver(void) 483 { 484 return pci_register_driver(&aq_pci_ops); 485 } 486 487 void aq_pci_func_unregister_driver(void) 488 { 489 pci_unregister_driver(&aq_pci_ops); 490 } 491 492