1 // SPDX-License-Identifier: ISC 2 /* 3 * Copyright (c) 2005-2011 Atheros Communications Inc. 4 * Copyright (c) 2011-2017 Qualcomm Atheros, Inc. 5 */ 6 7 #include <linux/pci.h> 8 #include <linux/module.h> 9 #include <linux/interrupt.h> 10 #include <linux/spinlock.h> 11 #include <linux/bitops.h> 12 13 #include "core.h" 14 #include "debug.h" 15 #include "coredump.h" 16 17 #include "targaddrs.h" 18 #include "bmi.h" 19 20 #include "hif.h" 21 #include "htc.h" 22 23 #include "ce.h" 24 #include "pci.h" 25 26 enum ath10k_pci_reset_mode { 27 ATH10K_PCI_RESET_AUTO = 0, 28 ATH10K_PCI_RESET_WARM_ONLY = 1, 29 }; 30 31 static unsigned int ath10k_pci_irq_mode = ATH10K_PCI_IRQ_AUTO; 32 static unsigned int ath10k_pci_reset_mode = ATH10K_PCI_RESET_AUTO; 33 34 module_param_named(irq_mode, ath10k_pci_irq_mode, uint, 0644); 35 MODULE_PARM_DESC(irq_mode, "0: auto, 1: legacy, 2: msi (default: 0)"); 36 37 module_param_named(reset_mode, ath10k_pci_reset_mode, uint, 0644); 38 MODULE_PARM_DESC(reset_mode, "0: auto, 1: warm only (default: 0)"); 39 40 /* how long wait to wait for target to initialise, in ms */ 41 #define ATH10K_PCI_TARGET_WAIT 3000 42 #define ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS 3 43 44 /* Maximum number of bytes that can be handled atomically by 45 * diag read and write. 46 */ 47 #define ATH10K_DIAG_TRANSFER_LIMIT 0x5000 48 49 #define QCA99X0_PCIE_BAR0_START_REG 0x81030 50 #define QCA99X0_CPU_MEM_ADDR_REG 0x4d00c 51 #define QCA99X0_CPU_MEM_DATA_REG 0x4d010 52 53 static const struct pci_device_id ath10k_pci_id_table[] = { 54 /* PCI-E QCA988X V2 (Ubiquiti branded) */ 55 { PCI_VDEVICE(UBIQUITI, QCA988X_2_0_DEVICE_ID_UBNT) }, 56 57 { PCI_VDEVICE(ATHEROS, QCA988X_2_0_DEVICE_ID) }, /* PCI-E QCA988X V2 */ 58 { PCI_VDEVICE(ATHEROS, QCA6164_2_1_DEVICE_ID) }, /* PCI-E QCA6164 V2.1 */ 59 { PCI_VDEVICE(ATHEROS, QCA6174_2_1_DEVICE_ID) }, /* PCI-E QCA6174 V2.1 */ 60 { PCI_VDEVICE(ATHEROS, QCA99X0_2_0_DEVICE_ID) }, /* PCI-E QCA99X0 V2 */ 61 { PCI_VDEVICE(ATHEROS, QCA9888_2_0_DEVICE_ID) }, /* PCI-E QCA9888 V2 */ 62 { PCI_VDEVICE(ATHEROS, QCA9984_1_0_DEVICE_ID) }, /* PCI-E QCA9984 V1 */ 63 { PCI_VDEVICE(ATHEROS, QCA9377_1_0_DEVICE_ID) }, /* PCI-E QCA9377 V1 */ 64 { PCI_VDEVICE(ATHEROS, QCA9887_1_0_DEVICE_ID) }, /* PCI-E QCA9887 */ 65 {0} 66 }; 67 68 static const struct ath10k_pci_supp_chip ath10k_pci_supp_chips[] = { 69 /* QCA988X pre 2.0 chips are not supported because they need some nasty 70 * hacks. ath10k doesn't have them and these devices crash horribly 71 * because of that. 72 */ 73 { QCA988X_2_0_DEVICE_ID_UBNT, QCA988X_HW_2_0_CHIP_ID_REV }, 74 { QCA988X_2_0_DEVICE_ID, QCA988X_HW_2_0_CHIP_ID_REV }, 75 76 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_2_1_CHIP_ID_REV }, 77 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_2_2_CHIP_ID_REV }, 78 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_3_0_CHIP_ID_REV }, 79 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_3_1_CHIP_ID_REV }, 80 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_3_2_CHIP_ID_REV }, 81 82 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_2_1_CHIP_ID_REV }, 83 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_2_2_CHIP_ID_REV }, 84 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_3_0_CHIP_ID_REV }, 85 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_3_1_CHIP_ID_REV }, 86 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_3_2_CHIP_ID_REV }, 87 88 { QCA99X0_2_0_DEVICE_ID, QCA99X0_HW_2_0_CHIP_ID_REV }, 89 90 { QCA9984_1_0_DEVICE_ID, QCA9984_HW_1_0_CHIP_ID_REV }, 91 92 { QCA9888_2_0_DEVICE_ID, QCA9888_HW_2_0_CHIP_ID_REV }, 93 94 { QCA9377_1_0_DEVICE_ID, QCA9377_HW_1_0_CHIP_ID_REV }, 95 { QCA9377_1_0_DEVICE_ID, QCA9377_HW_1_1_CHIP_ID_REV }, 96 97 { QCA9887_1_0_DEVICE_ID, QCA9887_HW_1_0_CHIP_ID_REV }, 98 }; 99 100 static void ath10k_pci_buffer_cleanup(struct ath10k *ar); 101 static int ath10k_pci_cold_reset(struct ath10k *ar); 102 static int ath10k_pci_safe_chip_reset(struct ath10k *ar); 103 static int ath10k_pci_init_irq(struct ath10k *ar); 104 static int ath10k_pci_deinit_irq(struct ath10k *ar); 105 static int ath10k_pci_request_irq(struct ath10k *ar); 106 static void ath10k_pci_free_irq(struct ath10k *ar); 107 static int ath10k_pci_bmi_wait(struct ath10k *ar, 108 struct ath10k_ce_pipe *tx_pipe, 109 struct ath10k_ce_pipe *rx_pipe, 110 struct bmi_xfer *xfer); 111 static int ath10k_pci_qca99x0_chip_reset(struct ath10k *ar); 112 static void ath10k_pci_htc_tx_cb(struct ath10k_ce_pipe *ce_state); 113 static void ath10k_pci_htc_rx_cb(struct ath10k_ce_pipe *ce_state); 114 static void ath10k_pci_htt_tx_cb(struct ath10k_ce_pipe *ce_state); 115 static void ath10k_pci_htt_rx_cb(struct ath10k_ce_pipe *ce_state); 116 static void ath10k_pci_htt_htc_rx_cb(struct ath10k_ce_pipe *ce_state); 117 static void ath10k_pci_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state); 118 119 static const struct ce_attr pci_host_ce_config_wlan[] = { 120 /* CE0: host->target HTC control and raw streams */ 121 { 122 .flags = CE_ATTR_FLAGS, 123 .src_nentries = 16, 124 .src_sz_max = 256, 125 .dest_nentries = 0, 126 .send_cb = ath10k_pci_htc_tx_cb, 127 }, 128 129 /* CE1: target->host HTT + HTC control */ 130 { 131 .flags = CE_ATTR_FLAGS, 132 .src_nentries = 0, 133 .src_sz_max = 2048, 134 .dest_nentries = 512, 135 .recv_cb = ath10k_pci_htt_htc_rx_cb, 136 }, 137 138 /* CE2: target->host WMI */ 139 { 140 .flags = CE_ATTR_FLAGS, 141 .src_nentries = 0, 142 .src_sz_max = 2048, 143 .dest_nentries = 128, 144 .recv_cb = ath10k_pci_htc_rx_cb, 145 }, 146 147 /* CE3: host->target WMI */ 148 { 149 .flags = CE_ATTR_FLAGS, 150 .src_nentries = 32, 151 .src_sz_max = 2048, 152 .dest_nentries = 0, 153 .send_cb = ath10k_pci_htc_tx_cb, 154 }, 155 156 /* CE4: host->target HTT */ 157 { 158 .flags = CE_ATTR_FLAGS | CE_ATTR_DIS_INTR, 159 .src_nentries = CE_HTT_H2T_MSG_SRC_NENTRIES, 160 .src_sz_max = 256, 161 .dest_nentries = 0, 162 .send_cb = ath10k_pci_htt_tx_cb, 163 }, 164 165 /* CE5: target->host HTT (HIF->HTT) */ 166 { 167 .flags = CE_ATTR_FLAGS, 168 .src_nentries = 0, 169 .src_sz_max = 512, 170 .dest_nentries = 512, 171 .recv_cb = ath10k_pci_htt_rx_cb, 172 }, 173 174 /* CE6: target autonomous hif_memcpy */ 175 { 176 .flags = CE_ATTR_FLAGS, 177 .src_nentries = 0, 178 .src_sz_max = 0, 179 .dest_nentries = 0, 180 }, 181 182 /* CE7: ce_diag, the Diagnostic Window */ 183 { 184 .flags = CE_ATTR_FLAGS | CE_ATTR_POLL, 185 .src_nentries = 2, 186 .src_sz_max = DIAG_TRANSFER_LIMIT, 187 .dest_nentries = 2, 188 }, 189 190 /* CE8: target->host pktlog */ 191 { 192 .flags = CE_ATTR_FLAGS, 193 .src_nentries = 0, 194 .src_sz_max = 2048, 195 .dest_nentries = 128, 196 .recv_cb = ath10k_pci_pktlog_rx_cb, 197 }, 198 199 /* CE9 target autonomous qcache memcpy */ 200 { 201 .flags = CE_ATTR_FLAGS, 202 .src_nentries = 0, 203 .src_sz_max = 0, 204 .dest_nentries = 0, 205 }, 206 207 /* CE10: target autonomous hif memcpy */ 208 { 209 .flags = CE_ATTR_FLAGS, 210 .src_nentries = 0, 211 .src_sz_max = 0, 212 .dest_nentries = 0, 213 }, 214 215 /* CE11: target autonomous hif memcpy */ 216 { 217 .flags = CE_ATTR_FLAGS, 218 .src_nentries = 0, 219 .src_sz_max = 0, 220 .dest_nentries = 0, 221 }, 222 }; 223 224 /* Target firmware's Copy Engine configuration. */ 225 static const struct ce_pipe_config pci_target_ce_config_wlan[] = { 226 /* CE0: host->target HTC control and raw streams */ 227 { 228 .pipenum = __cpu_to_le32(0), 229 .pipedir = __cpu_to_le32(PIPEDIR_OUT), 230 .nentries = __cpu_to_le32(32), 231 .nbytes_max = __cpu_to_le32(256), 232 .flags = __cpu_to_le32(CE_ATTR_FLAGS), 233 .reserved = __cpu_to_le32(0), 234 }, 235 236 /* CE1: target->host HTT + HTC control */ 237 { 238 .pipenum = __cpu_to_le32(1), 239 .pipedir = __cpu_to_le32(PIPEDIR_IN), 240 .nentries = __cpu_to_le32(32), 241 .nbytes_max = __cpu_to_le32(2048), 242 .flags = __cpu_to_le32(CE_ATTR_FLAGS), 243 .reserved = __cpu_to_le32(0), 244 }, 245 246 /* CE2: target->host WMI */ 247 { 248 .pipenum = __cpu_to_le32(2), 249 .pipedir = __cpu_to_le32(PIPEDIR_IN), 250 .nentries = __cpu_to_le32(64), 251 .nbytes_max = __cpu_to_le32(2048), 252 .flags = __cpu_to_le32(CE_ATTR_FLAGS), 253 .reserved = __cpu_to_le32(0), 254 }, 255 256 /* CE3: host->target WMI */ 257 { 258 .pipenum = __cpu_to_le32(3), 259 .pipedir = __cpu_to_le32(PIPEDIR_OUT), 260 .nentries = __cpu_to_le32(32), 261 .nbytes_max = __cpu_to_le32(2048), 262 .flags = __cpu_to_le32(CE_ATTR_FLAGS), 263 .reserved = __cpu_to_le32(0), 264 }, 265 266 /* CE4: host->target HTT */ 267 { 268 .pipenum = __cpu_to_le32(4), 269 .pipedir = __cpu_to_le32(PIPEDIR_OUT), 270 .nentries = __cpu_to_le32(256), 271 .nbytes_max = __cpu_to_le32(256), 272 .flags = __cpu_to_le32(CE_ATTR_FLAGS), 273 .reserved = __cpu_to_le32(0), 274 }, 275 276 /* NB: 50% of src nentries, since tx has 2 frags */ 277 278 /* CE5: target->host HTT (HIF->HTT) */ 279 { 280 .pipenum = __cpu_to_le32(5), 281 .pipedir = __cpu_to_le32(PIPEDIR_IN), 282 .nentries = __cpu_to_le32(32), 283 .nbytes_max = __cpu_to_le32(512), 284 .flags = __cpu_to_le32(CE_ATTR_FLAGS), 285 .reserved = __cpu_to_le32(0), 286 }, 287 288 /* CE6: Reserved for target autonomous hif_memcpy */ 289 { 290 .pipenum = __cpu_to_le32(6), 291 .pipedir = __cpu_to_le32(PIPEDIR_INOUT), 292 .nentries = __cpu_to_le32(32), 293 .nbytes_max = __cpu_to_le32(4096), 294 .flags = __cpu_to_le32(CE_ATTR_FLAGS), 295 .reserved = __cpu_to_le32(0), 296 }, 297 298 /* CE7 used only by Host */ 299 { 300 .pipenum = __cpu_to_le32(7), 301 .pipedir = __cpu_to_le32(PIPEDIR_INOUT), 302 .nentries = __cpu_to_le32(0), 303 .nbytes_max = __cpu_to_le32(0), 304 .flags = __cpu_to_le32(0), 305 .reserved = __cpu_to_le32(0), 306 }, 307 308 /* CE8 target->host packtlog */ 309 { 310 .pipenum = __cpu_to_le32(8), 311 .pipedir = __cpu_to_le32(PIPEDIR_IN), 312 .nentries = __cpu_to_le32(64), 313 .nbytes_max = __cpu_to_le32(2048), 314 .flags = __cpu_to_le32(CE_ATTR_FLAGS | CE_ATTR_DIS_INTR), 315 .reserved = __cpu_to_le32(0), 316 }, 317 318 /* CE9 target autonomous qcache memcpy */ 319 { 320 .pipenum = __cpu_to_le32(9), 321 .pipedir = __cpu_to_le32(PIPEDIR_INOUT), 322 .nentries = __cpu_to_le32(32), 323 .nbytes_max = __cpu_to_le32(2048), 324 .flags = __cpu_to_le32(CE_ATTR_FLAGS | CE_ATTR_DIS_INTR), 325 .reserved = __cpu_to_le32(0), 326 }, 327 328 /* It not necessary to send target wlan configuration for CE10 & CE11 329 * as these CEs are not actively used in target. 330 */ 331 }; 332 333 /* 334 * Map from service/endpoint to Copy Engine. 335 * This table is derived from the CE_PCI TABLE, above. 336 * It is passed to the Target at startup for use by firmware. 337 */ 338 static const struct ce_service_to_pipe pci_target_service_to_ce_map_wlan[] = { 339 { 340 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VO), 341 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */ 342 __cpu_to_le32(3), 343 }, 344 { 345 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VO), 346 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */ 347 __cpu_to_le32(2), 348 }, 349 { 350 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BK), 351 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */ 352 __cpu_to_le32(3), 353 }, 354 { 355 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BK), 356 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */ 357 __cpu_to_le32(2), 358 }, 359 { 360 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BE), 361 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */ 362 __cpu_to_le32(3), 363 }, 364 { 365 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BE), 366 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */ 367 __cpu_to_le32(2), 368 }, 369 { 370 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VI), 371 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */ 372 __cpu_to_le32(3), 373 }, 374 { 375 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VI), 376 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */ 377 __cpu_to_le32(2), 378 }, 379 { 380 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_CONTROL), 381 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */ 382 __cpu_to_le32(3), 383 }, 384 { 385 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_CONTROL), 386 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */ 387 __cpu_to_le32(2), 388 }, 389 { 390 __cpu_to_le32(ATH10K_HTC_SVC_ID_RSVD_CTRL), 391 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */ 392 __cpu_to_le32(0), 393 }, 394 { 395 __cpu_to_le32(ATH10K_HTC_SVC_ID_RSVD_CTRL), 396 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */ 397 __cpu_to_le32(1), 398 }, 399 { /* not used */ 400 __cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS), 401 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */ 402 __cpu_to_le32(0), 403 }, 404 { /* not used */ 405 __cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS), 406 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */ 407 __cpu_to_le32(1), 408 }, 409 { 410 __cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA_MSG), 411 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */ 412 __cpu_to_le32(4), 413 }, 414 { 415 __cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA_MSG), 416 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */ 417 __cpu_to_le32(5), 418 }, 419 420 /* (Additions here) */ 421 422 { /* must be last */ 423 __cpu_to_le32(0), 424 __cpu_to_le32(0), 425 __cpu_to_le32(0), 426 }, 427 }; 428 429 static bool ath10k_pci_is_awake(struct ath10k *ar) 430 { 431 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 432 u32 val = ioread32(ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS + 433 RTC_STATE_ADDRESS); 434 435 return RTC_STATE_V_GET(val) == RTC_STATE_V_ON; 436 } 437 438 static void __ath10k_pci_wake(struct ath10k *ar) 439 { 440 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 441 442 lockdep_assert_held(&ar_pci->ps_lock); 443 444 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps wake reg refcount %lu awake %d\n", 445 ar_pci->ps_wake_refcount, ar_pci->ps_awake); 446 447 iowrite32(PCIE_SOC_WAKE_V_MASK, 448 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS + 449 PCIE_SOC_WAKE_ADDRESS); 450 } 451 452 static void __ath10k_pci_sleep(struct ath10k *ar) 453 { 454 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 455 456 lockdep_assert_held(&ar_pci->ps_lock); 457 458 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps sleep reg refcount %lu awake %d\n", 459 ar_pci->ps_wake_refcount, ar_pci->ps_awake); 460 461 iowrite32(PCIE_SOC_WAKE_RESET, 462 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS + 463 PCIE_SOC_WAKE_ADDRESS); 464 ar_pci->ps_awake = false; 465 } 466 467 static int ath10k_pci_wake_wait(struct ath10k *ar) 468 { 469 int tot_delay = 0; 470 int curr_delay = 5; 471 472 while (tot_delay < PCIE_WAKE_TIMEOUT) { 473 if (ath10k_pci_is_awake(ar)) { 474 if (tot_delay > PCIE_WAKE_LATE_US) 475 ath10k_warn(ar, "device wakeup took %d ms which is unusually long, otherwise it works normally.\n", 476 tot_delay / 1000); 477 return 0; 478 } 479 480 udelay(curr_delay); 481 tot_delay += curr_delay; 482 483 if (curr_delay < 50) 484 curr_delay += 5; 485 } 486 487 return -ETIMEDOUT; 488 } 489 490 static int ath10k_pci_force_wake(struct ath10k *ar) 491 { 492 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 493 unsigned long flags; 494 int ret = 0; 495 496 if (ar_pci->pci_ps) 497 return ret; 498 499 spin_lock_irqsave(&ar_pci->ps_lock, flags); 500 501 if (!ar_pci->ps_awake) { 502 iowrite32(PCIE_SOC_WAKE_V_MASK, 503 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS + 504 PCIE_SOC_WAKE_ADDRESS); 505 506 ret = ath10k_pci_wake_wait(ar); 507 if (ret == 0) 508 ar_pci->ps_awake = true; 509 } 510 511 spin_unlock_irqrestore(&ar_pci->ps_lock, flags); 512 513 return ret; 514 } 515 516 static void ath10k_pci_force_sleep(struct ath10k *ar) 517 { 518 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 519 unsigned long flags; 520 521 spin_lock_irqsave(&ar_pci->ps_lock, flags); 522 523 iowrite32(PCIE_SOC_WAKE_RESET, 524 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS + 525 PCIE_SOC_WAKE_ADDRESS); 526 ar_pci->ps_awake = false; 527 528 spin_unlock_irqrestore(&ar_pci->ps_lock, flags); 529 } 530 531 static int ath10k_pci_wake(struct ath10k *ar) 532 { 533 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 534 unsigned long flags; 535 int ret = 0; 536 537 if (ar_pci->pci_ps == 0) 538 return ret; 539 540 spin_lock_irqsave(&ar_pci->ps_lock, flags); 541 542 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps wake refcount %lu awake %d\n", 543 ar_pci->ps_wake_refcount, ar_pci->ps_awake); 544 545 /* This function can be called very frequently. To avoid excessive 546 * CPU stalls for MMIO reads use a cache var to hold the device state. 547 */ 548 if (!ar_pci->ps_awake) { 549 __ath10k_pci_wake(ar); 550 551 ret = ath10k_pci_wake_wait(ar); 552 if (ret == 0) 553 ar_pci->ps_awake = true; 554 } 555 556 if (ret == 0) { 557 ar_pci->ps_wake_refcount++; 558 WARN_ON(ar_pci->ps_wake_refcount == 0); 559 } 560 561 spin_unlock_irqrestore(&ar_pci->ps_lock, flags); 562 563 return ret; 564 } 565 566 static void ath10k_pci_sleep(struct ath10k *ar) 567 { 568 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 569 unsigned long flags; 570 571 if (ar_pci->pci_ps == 0) 572 return; 573 574 spin_lock_irqsave(&ar_pci->ps_lock, flags); 575 576 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps sleep refcount %lu awake %d\n", 577 ar_pci->ps_wake_refcount, ar_pci->ps_awake); 578 579 if (WARN_ON(ar_pci->ps_wake_refcount == 0)) 580 goto skip; 581 582 ar_pci->ps_wake_refcount--; 583 584 mod_timer(&ar_pci->ps_timer, jiffies + 585 msecs_to_jiffies(ATH10K_PCI_SLEEP_GRACE_PERIOD_MSEC)); 586 587 skip: 588 spin_unlock_irqrestore(&ar_pci->ps_lock, flags); 589 } 590 591 static void ath10k_pci_ps_timer(struct timer_list *t) 592 { 593 struct ath10k_pci *ar_pci = from_timer(ar_pci, t, ps_timer); 594 struct ath10k *ar = ar_pci->ar; 595 unsigned long flags; 596 597 spin_lock_irqsave(&ar_pci->ps_lock, flags); 598 599 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps timer refcount %lu awake %d\n", 600 ar_pci->ps_wake_refcount, ar_pci->ps_awake); 601 602 if (ar_pci->ps_wake_refcount > 0) 603 goto skip; 604 605 __ath10k_pci_sleep(ar); 606 607 skip: 608 spin_unlock_irqrestore(&ar_pci->ps_lock, flags); 609 } 610 611 static void ath10k_pci_sleep_sync(struct ath10k *ar) 612 { 613 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 614 unsigned long flags; 615 616 if (ar_pci->pci_ps == 0) { 617 ath10k_pci_force_sleep(ar); 618 return; 619 } 620 621 del_timer_sync(&ar_pci->ps_timer); 622 623 spin_lock_irqsave(&ar_pci->ps_lock, flags); 624 WARN_ON(ar_pci->ps_wake_refcount > 0); 625 __ath10k_pci_sleep(ar); 626 spin_unlock_irqrestore(&ar_pci->ps_lock, flags); 627 } 628 629 static void ath10k_bus_pci_write32(struct ath10k *ar, u32 offset, u32 value) 630 { 631 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 632 int ret; 633 634 if (unlikely(offset + sizeof(value) > ar_pci->mem_len)) { 635 ath10k_warn(ar, "refusing to write mmio out of bounds at 0x%08x - 0x%08zx (max 0x%08zx)\n", 636 offset, offset + sizeof(value), ar_pci->mem_len); 637 return; 638 } 639 640 ret = ath10k_pci_wake(ar); 641 if (ret) { 642 ath10k_warn(ar, "failed to wake target for write32 of 0x%08x at 0x%08x: %d\n", 643 value, offset, ret); 644 return; 645 } 646 647 iowrite32(value, ar_pci->mem + offset); 648 ath10k_pci_sleep(ar); 649 } 650 651 static u32 ath10k_bus_pci_read32(struct ath10k *ar, u32 offset) 652 { 653 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 654 u32 val; 655 int ret; 656 657 if (unlikely(offset + sizeof(val) > ar_pci->mem_len)) { 658 ath10k_warn(ar, "refusing to read mmio out of bounds at 0x%08x - 0x%08zx (max 0x%08zx)\n", 659 offset, offset + sizeof(val), ar_pci->mem_len); 660 return 0; 661 } 662 663 ret = ath10k_pci_wake(ar); 664 if (ret) { 665 ath10k_warn(ar, "failed to wake target for read32 at 0x%08x: %d\n", 666 offset, ret); 667 return 0xffffffff; 668 } 669 670 val = ioread32(ar_pci->mem + offset); 671 ath10k_pci_sleep(ar); 672 673 return val; 674 } 675 676 inline void ath10k_pci_write32(struct ath10k *ar, u32 offset, u32 value) 677 { 678 struct ath10k_ce *ce = ath10k_ce_priv(ar); 679 680 ce->bus_ops->write32(ar, offset, value); 681 } 682 683 inline u32 ath10k_pci_read32(struct ath10k *ar, u32 offset) 684 { 685 struct ath10k_ce *ce = ath10k_ce_priv(ar); 686 687 return ce->bus_ops->read32(ar, offset); 688 } 689 690 u32 ath10k_pci_soc_read32(struct ath10k *ar, u32 addr) 691 { 692 return ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS + addr); 693 } 694 695 void ath10k_pci_soc_write32(struct ath10k *ar, u32 addr, u32 val) 696 { 697 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + addr, val); 698 } 699 700 u32 ath10k_pci_reg_read32(struct ath10k *ar, u32 addr) 701 { 702 return ath10k_pci_read32(ar, PCIE_LOCAL_BASE_ADDRESS + addr); 703 } 704 705 void ath10k_pci_reg_write32(struct ath10k *ar, u32 addr, u32 val) 706 { 707 ath10k_pci_write32(ar, PCIE_LOCAL_BASE_ADDRESS + addr, val); 708 } 709 710 bool ath10k_pci_irq_pending(struct ath10k *ar) 711 { 712 u32 cause; 713 714 /* Check if the shared legacy irq is for us */ 715 cause = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + 716 PCIE_INTR_CAUSE_ADDRESS); 717 if (cause & (PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL)) 718 return true; 719 720 return false; 721 } 722 723 void ath10k_pci_disable_and_clear_legacy_irq(struct ath10k *ar) 724 { 725 /* IMPORTANT: INTR_CLR register has to be set after 726 * INTR_ENABLE is set to 0, otherwise interrupt can not be 727 * really cleared. 728 */ 729 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS, 730 0); 731 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_CLR_ADDRESS, 732 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL); 733 734 /* IMPORTANT: this extra read transaction is required to 735 * flush the posted write buffer. 736 */ 737 (void)ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + 738 PCIE_INTR_ENABLE_ADDRESS); 739 } 740 741 void ath10k_pci_enable_legacy_irq(struct ath10k *ar) 742 { 743 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + 744 PCIE_INTR_ENABLE_ADDRESS, 745 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL); 746 747 /* IMPORTANT: this extra read transaction is required to 748 * flush the posted write buffer. 749 */ 750 (void)ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + 751 PCIE_INTR_ENABLE_ADDRESS); 752 } 753 754 static inline const char *ath10k_pci_get_irq_method(struct ath10k *ar) 755 { 756 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 757 758 if (ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_MSI) 759 return "msi"; 760 761 return "legacy"; 762 } 763 764 static int __ath10k_pci_rx_post_buf(struct ath10k_pci_pipe *pipe) 765 { 766 struct ath10k *ar = pipe->hif_ce_state; 767 struct ath10k_ce *ce = ath10k_ce_priv(ar); 768 struct ath10k_ce_pipe *ce_pipe = pipe->ce_hdl; 769 struct sk_buff *skb; 770 dma_addr_t paddr; 771 int ret; 772 773 skb = dev_alloc_skb(pipe->buf_sz); 774 if (!skb) 775 return -ENOMEM; 776 777 WARN_ONCE((unsigned long)skb->data & 3, "unaligned skb"); 778 779 paddr = dma_map_single(ar->dev, skb->data, 780 skb->len + skb_tailroom(skb), 781 DMA_FROM_DEVICE); 782 if (unlikely(dma_mapping_error(ar->dev, paddr))) { 783 ath10k_warn(ar, "failed to dma map pci rx buf\n"); 784 dev_kfree_skb_any(skb); 785 return -EIO; 786 } 787 788 ATH10K_SKB_RXCB(skb)->paddr = paddr; 789 790 spin_lock_bh(&ce->ce_lock); 791 ret = ce_pipe->ops->ce_rx_post_buf(ce_pipe, skb, paddr); 792 spin_unlock_bh(&ce->ce_lock); 793 if (ret) { 794 dma_unmap_single(ar->dev, paddr, skb->len + skb_tailroom(skb), 795 DMA_FROM_DEVICE); 796 dev_kfree_skb_any(skb); 797 return ret; 798 } 799 800 return 0; 801 } 802 803 static void ath10k_pci_rx_post_pipe(struct ath10k_pci_pipe *pipe) 804 { 805 struct ath10k *ar = pipe->hif_ce_state; 806 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 807 struct ath10k_ce *ce = ath10k_ce_priv(ar); 808 struct ath10k_ce_pipe *ce_pipe = pipe->ce_hdl; 809 int ret, num; 810 811 if (pipe->buf_sz == 0) 812 return; 813 814 if (!ce_pipe->dest_ring) 815 return; 816 817 spin_lock_bh(&ce->ce_lock); 818 num = __ath10k_ce_rx_num_free_bufs(ce_pipe); 819 spin_unlock_bh(&ce->ce_lock); 820 821 while (num >= 0) { 822 ret = __ath10k_pci_rx_post_buf(pipe); 823 if (ret) { 824 if (ret == -ENOSPC) 825 break; 826 ath10k_warn(ar, "failed to post pci rx buf: %d\n", ret); 827 mod_timer(&ar_pci->rx_post_retry, jiffies + 828 ATH10K_PCI_RX_POST_RETRY_MS); 829 break; 830 } 831 num--; 832 } 833 } 834 835 void ath10k_pci_rx_post(struct ath10k *ar) 836 { 837 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 838 int i; 839 840 for (i = 0; i < CE_COUNT; i++) 841 ath10k_pci_rx_post_pipe(&ar_pci->pipe_info[i]); 842 } 843 844 void ath10k_pci_rx_replenish_retry(struct timer_list *t) 845 { 846 struct ath10k_pci *ar_pci = from_timer(ar_pci, t, rx_post_retry); 847 struct ath10k *ar = ar_pci->ar; 848 849 ath10k_pci_rx_post(ar); 850 } 851 852 static u32 ath10k_pci_qca988x_targ_cpu_to_ce_addr(struct ath10k *ar, u32 addr) 853 { 854 u32 val = 0, region = addr & 0xfffff; 855 856 val = (ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + CORE_CTRL_ADDRESS) 857 & 0x7ff) << 21; 858 val |= 0x100000 | region; 859 return val; 860 } 861 862 /* Refactor from ath10k_pci_qca988x_targ_cpu_to_ce_addr. 863 * Support to access target space below 1M for qca6174 and qca9377. 864 * If target space is below 1M, the bit[20] of converted CE addr is 0. 865 * Otherwise bit[20] of converted CE addr is 1. 866 */ 867 static u32 ath10k_pci_qca6174_targ_cpu_to_ce_addr(struct ath10k *ar, u32 addr) 868 { 869 u32 val = 0, region = addr & 0xfffff; 870 871 val = (ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + CORE_CTRL_ADDRESS) 872 & 0x7ff) << 21; 873 val |= ((addr >= 0x100000) ? 0x100000 : 0) | region; 874 return val; 875 } 876 877 static u32 ath10k_pci_qca99x0_targ_cpu_to_ce_addr(struct ath10k *ar, u32 addr) 878 { 879 u32 val = 0, region = addr & 0xfffff; 880 881 val = ath10k_pci_read32(ar, PCIE_BAR_REG_ADDRESS); 882 val |= 0x100000 | region; 883 return val; 884 } 885 886 static u32 ath10k_pci_targ_cpu_to_ce_addr(struct ath10k *ar, u32 addr) 887 { 888 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 889 890 if (WARN_ON_ONCE(!ar_pci->targ_cpu_to_ce_addr)) 891 return -ENOTSUPP; 892 893 return ar_pci->targ_cpu_to_ce_addr(ar, addr); 894 } 895 896 /* 897 * Diagnostic read/write access is provided for startup/config/debug usage. 898 * Caller must guarantee proper alignment, when applicable, and single user 899 * at any moment. 900 */ 901 static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data, 902 int nbytes) 903 { 904 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 905 int ret = 0; 906 u32 *buf; 907 unsigned int completed_nbytes, alloc_nbytes, remaining_bytes; 908 struct ath10k_ce_pipe *ce_diag; 909 /* Host buffer address in CE space */ 910 u32 ce_data; 911 dma_addr_t ce_data_base = 0; 912 void *data_buf; 913 int i; 914 915 mutex_lock(&ar_pci->ce_diag_mutex); 916 ce_diag = ar_pci->ce_diag; 917 918 /* 919 * Allocate a temporary bounce buffer to hold caller's data 920 * to be DMA'ed from Target. This guarantees 921 * 1) 4-byte alignment 922 * 2) Buffer in DMA-able space 923 */ 924 alloc_nbytes = min_t(unsigned int, nbytes, DIAG_TRANSFER_LIMIT); 925 926 data_buf = dma_alloc_coherent(ar->dev, alloc_nbytes, &ce_data_base, 927 GFP_ATOMIC); 928 if (!data_buf) { 929 ret = -ENOMEM; 930 goto done; 931 } 932 933 /* The address supplied by the caller is in the 934 * Target CPU virtual address space. 935 * 936 * In order to use this address with the diagnostic CE, 937 * convert it from Target CPU virtual address space 938 * to CE address space 939 */ 940 address = ath10k_pci_targ_cpu_to_ce_addr(ar, address); 941 942 remaining_bytes = nbytes; 943 ce_data = ce_data_base; 944 while (remaining_bytes) { 945 nbytes = min_t(unsigned int, remaining_bytes, 946 DIAG_TRANSFER_LIMIT); 947 948 ret = ath10k_ce_rx_post_buf(ce_diag, &ce_data, ce_data); 949 if (ret != 0) 950 goto done; 951 952 /* Request CE to send from Target(!) address to Host buffer */ 953 ret = ath10k_ce_send(ce_diag, NULL, (u32)address, nbytes, 0, 0); 954 if (ret) 955 goto done; 956 957 i = 0; 958 while (ath10k_ce_completed_send_next(ce_diag, NULL) != 0) { 959 udelay(DIAG_ACCESS_CE_WAIT_US); 960 i += DIAG_ACCESS_CE_WAIT_US; 961 962 if (i > DIAG_ACCESS_CE_TIMEOUT_US) { 963 ret = -EBUSY; 964 goto done; 965 } 966 } 967 968 i = 0; 969 while (ath10k_ce_completed_recv_next(ce_diag, (void **)&buf, 970 &completed_nbytes) != 0) { 971 udelay(DIAG_ACCESS_CE_WAIT_US); 972 i += DIAG_ACCESS_CE_WAIT_US; 973 974 if (i > DIAG_ACCESS_CE_TIMEOUT_US) { 975 ret = -EBUSY; 976 goto done; 977 } 978 } 979 980 if (nbytes != completed_nbytes) { 981 ret = -EIO; 982 goto done; 983 } 984 985 if (*buf != ce_data) { 986 ret = -EIO; 987 goto done; 988 } 989 990 remaining_bytes -= nbytes; 991 memcpy(data, data_buf, nbytes); 992 993 address += nbytes; 994 data += nbytes; 995 } 996 997 done: 998 999 if (data_buf) 1000 dma_free_coherent(ar->dev, alloc_nbytes, data_buf, 1001 ce_data_base); 1002 1003 mutex_unlock(&ar_pci->ce_diag_mutex); 1004 1005 return ret; 1006 } 1007 1008 static int ath10k_pci_diag_read32(struct ath10k *ar, u32 address, u32 *value) 1009 { 1010 __le32 val = 0; 1011 int ret; 1012 1013 ret = ath10k_pci_diag_read_mem(ar, address, &val, sizeof(val)); 1014 *value = __le32_to_cpu(val); 1015 1016 return ret; 1017 } 1018 1019 static int __ath10k_pci_diag_read_hi(struct ath10k *ar, void *dest, 1020 u32 src, u32 len) 1021 { 1022 u32 host_addr, addr; 1023 int ret; 1024 1025 host_addr = host_interest_item_address(src); 1026 1027 ret = ath10k_pci_diag_read32(ar, host_addr, &addr); 1028 if (ret != 0) { 1029 ath10k_warn(ar, "failed to get memcpy hi address for firmware address %d: %d\n", 1030 src, ret); 1031 return ret; 1032 } 1033 1034 ret = ath10k_pci_diag_read_mem(ar, addr, dest, len); 1035 if (ret != 0) { 1036 ath10k_warn(ar, "failed to memcpy firmware memory from %d (%d B): %d\n", 1037 addr, len, ret); 1038 return ret; 1039 } 1040 1041 return 0; 1042 } 1043 1044 #define ath10k_pci_diag_read_hi(ar, dest, src, len) \ 1045 __ath10k_pci_diag_read_hi(ar, dest, HI_ITEM(src), len) 1046 1047 int ath10k_pci_diag_write_mem(struct ath10k *ar, u32 address, 1048 const void *data, int nbytes) 1049 { 1050 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 1051 int ret = 0; 1052 u32 *buf; 1053 unsigned int completed_nbytes, alloc_nbytes, remaining_bytes; 1054 struct ath10k_ce_pipe *ce_diag; 1055 void *data_buf; 1056 dma_addr_t ce_data_base = 0; 1057 int i; 1058 1059 mutex_lock(&ar_pci->ce_diag_mutex); 1060 ce_diag = ar_pci->ce_diag; 1061 1062 /* 1063 * Allocate a temporary bounce buffer to hold caller's data 1064 * to be DMA'ed to Target. This guarantees 1065 * 1) 4-byte alignment 1066 * 2) Buffer in DMA-able space 1067 */ 1068 alloc_nbytes = min_t(unsigned int, nbytes, DIAG_TRANSFER_LIMIT); 1069 1070 data_buf = dma_alloc_coherent(ar->dev, alloc_nbytes, &ce_data_base, 1071 GFP_ATOMIC); 1072 if (!data_buf) { 1073 ret = -ENOMEM; 1074 goto done; 1075 } 1076 1077 /* 1078 * The address supplied by the caller is in the 1079 * Target CPU virtual address space. 1080 * 1081 * In order to use this address with the diagnostic CE, 1082 * convert it from 1083 * Target CPU virtual address space 1084 * to 1085 * CE address space 1086 */ 1087 address = ath10k_pci_targ_cpu_to_ce_addr(ar, address); 1088 1089 remaining_bytes = nbytes; 1090 while (remaining_bytes) { 1091 /* FIXME: check cast */ 1092 nbytes = min_t(int, remaining_bytes, DIAG_TRANSFER_LIMIT); 1093 1094 /* Copy caller's data to allocated DMA buf */ 1095 memcpy(data_buf, data, nbytes); 1096 1097 /* Set up to receive directly into Target(!) address */ 1098 ret = ath10k_ce_rx_post_buf(ce_diag, &address, address); 1099 if (ret != 0) 1100 goto done; 1101 1102 /* 1103 * Request CE to send caller-supplied data that 1104 * was copied to bounce buffer to Target(!) address. 1105 */ 1106 ret = ath10k_ce_send(ce_diag, NULL, ce_data_base, nbytes, 0, 0); 1107 if (ret != 0) 1108 goto done; 1109 1110 i = 0; 1111 while (ath10k_ce_completed_send_next(ce_diag, NULL) != 0) { 1112 udelay(DIAG_ACCESS_CE_WAIT_US); 1113 i += DIAG_ACCESS_CE_WAIT_US; 1114 1115 if (i > DIAG_ACCESS_CE_TIMEOUT_US) { 1116 ret = -EBUSY; 1117 goto done; 1118 } 1119 } 1120 1121 i = 0; 1122 while (ath10k_ce_completed_recv_next(ce_diag, (void **)&buf, 1123 &completed_nbytes) != 0) { 1124 udelay(DIAG_ACCESS_CE_WAIT_US); 1125 i += DIAG_ACCESS_CE_WAIT_US; 1126 1127 if (i > DIAG_ACCESS_CE_TIMEOUT_US) { 1128 ret = -EBUSY; 1129 goto done; 1130 } 1131 } 1132 1133 if (nbytes != completed_nbytes) { 1134 ret = -EIO; 1135 goto done; 1136 } 1137 1138 if (*buf != address) { 1139 ret = -EIO; 1140 goto done; 1141 } 1142 1143 remaining_bytes -= nbytes; 1144 address += nbytes; 1145 data += nbytes; 1146 } 1147 1148 done: 1149 if (data_buf) { 1150 dma_free_coherent(ar->dev, alloc_nbytes, data_buf, 1151 ce_data_base); 1152 } 1153 1154 if (ret != 0) 1155 ath10k_warn(ar, "failed to write diag value at 0x%x: %d\n", 1156 address, ret); 1157 1158 mutex_unlock(&ar_pci->ce_diag_mutex); 1159 1160 return ret; 1161 } 1162 1163 static int ath10k_pci_diag_write32(struct ath10k *ar, u32 address, u32 value) 1164 { 1165 __le32 val = __cpu_to_le32(value); 1166 1167 return ath10k_pci_diag_write_mem(ar, address, &val, sizeof(val)); 1168 } 1169 1170 /* Called by lower (CE) layer when a send to Target completes. */ 1171 static void ath10k_pci_htc_tx_cb(struct ath10k_ce_pipe *ce_state) 1172 { 1173 struct ath10k *ar = ce_state->ar; 1174 struct sk_buff_head list; 1175 struct sk_buff *skb; 1176 1177 __skb_queue_head_init(&list); 1178 while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) { 1179 /* no need to call tx completion for NULL pointers */ 1180 if (skb == NULL) 1181 continue; 1182 1183 __skb_queue_tail(&list, skb); 1184 } 1185 1186 while ((skb = __skb_dequeue(&list))) 1187 ath10k_htc_tx_completion_handler(ar, skb); 1188 } 1189 1190 static void ath10k_pci_process_rx_cb(struct ath10k_ce_pipe *ce_state, 1191 void (*callback)(struct ath10k *ar, 1192 struct sk_buff *skb)) 1193 { 1194 struct ath10k *ar = ce_state->ar; 1195 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 1196 struct ath10k_pci_pipe *pipe_info = &ar_pci->pipe_info[ce_state->id]; 1197 struct sk_buff *skb; 1198 struct sk_buff_head list; 1199 void *transfer_context; 1200 unsigned int nbytes, max_nbytes; 1201 1202 __skb_queue_head_init(&list); 1203 while (ath10k_ce_completed_recv_next(ce_state, &transfer_context, 1204 &nbytes) == 0) { 1205 skb = transfer_context; 1206 max_nbytes = skb->len + skb_tailroom(skb); 1207 dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr, 1208 max_nbytes, DMA_FROM_DEVICE); 1209 1210 if (unlikely(max_nbytes < nbytes)) { 1211 ath10k_warn(ar, "rxed more than expected (nbytes %d, max %d)", 1212 nbytes, max_nbytes); 1213 dev_kfree_skb_any(skb); 1214 continue; 1215 } 1216 1217 skb_put(skb, nbytes); 1218 __skb_queue_tail(&list, skb); 1219 } 1220 1221 while ((skb = __skb_dequeue(&list))) { 1222 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci rx ce pipe %d len %d\n", 1223 ce_state->id, skb->len); 1224 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci rx: ", 1225 skb->data, skb->len); 1226 1227 callback(ar, skb); 1228 } 1229 1230 ath10k_pci_rx_post_pipe(pipe_info); 1231 } 1232 1233 static void ath10k_pci_process_htt_rx_cb(struct ath10k_ce_pipe *ce_state, 1234 void (*callback)(struct ath10k *ar, 1235 struct sk_buff *skb)) 1236 { 1237 struct ath10k *ar = ce_state->ar; 1238 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 1239 struct ath10k_pci_pipe *pipe_info = &ar_pci->pipe_info[ce_state->id]; 1240 struct ath10k_ce_pipe *ce_pipe = pipe_info->ce_hdl; 1241 struct sk_buff *skb; 1242 struct sk_buff_head list; 1243 void *transfer_context; 1244 unsigned int nbytes, max_nbytes, nentries; 1245 int orig_len; 1246 1247 /* No need to acquire ce_lock for CE5, since this is the only place CE5 1248 * is processed other than init and deinit. Before releasing CE5 1249 * buffers, interrupts are disabled. Thus CE5 access is serialized. 1250 */ 1251 __skb_queue_head_init(&list); 1252 while (ath10k_ce_completed_recv_next_nolock(ce_state, &transfer_context, 1253 &nbytes) == 0) { 1254 skb = transfer_context; 1255 max_nbytes = skb->len + skb_tailroom(skb); 1256 1257 if (unlikely(max_nbytes < nbytes)) { 1258 ath10k_warn(ar, "rxed more than expected (nbytes %d, max %d)", 1259 nbytes, max_nbytes); 1260 continue; 1261 } 1262 1263 dma_sync_single_for_cpu(ar->dev, ATH10K_SKB_RXCB(skb)->paddr, 1264 max_nbytes, DMA_FROM_DEVICE); 1265 skb_put(skb, nbytes); 1266 __skb_queue_tail(&list, skb); 1267 } 1268 1269 nentries = skb_queue_len(&list); 1270 while ((skb = __skb_dequeue(&list))) { 1271 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci rx ce pipe %d len %d\n", 1272 ce_state->id, skb->len); 1273 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci rx: ", 1274 skb->data, skb->len); 1275 1276 orig_len = skb->len; 1277 callback(ar, skb); 1278 skb_push(skb, orig_len - skb->len); 1279 skb_reset_tail_pointer(skb); 1280 skb_trim(skb, 0); 1281 1282 /*let device gain the buffer again*/ 1283 dma_sync_single_for_device(ar->dev, ATH10K_SKB_RXCB(skb)->paddr, 1284 skb->len + skb_tailroom(skb), 1285 DMA_FROM_DEVICE); 1286 } 1287 ath10k_ce_rx_update_write_idx(ce_pipe, nentries); 1288 } 1289 1290 /* Called by lower (CE) layer when data is received from the Target. */ 1291 static void ath10k_pci_htc_rx_cb(struct ath10k_ce_pipe *ce_state) 1292 { 1293 ath10k_pci_process_rx_cb(ce_state, ath10k_htc_rx_completion_handler); 1294 } 1295 1296 static void ath10k_pci_htt_htc_rx_cb(struct ath10k_ce_pipe *ce_state) 1297 { 1298 /* CE4 polling needs to be done whenever CE pipe which transports 1299 * HTT Rx (target->host) is processed. 1300 */ 1301 ath10k_ce_per_engine_service(ce_state->ar, 4); 1302 1303 ath10k_pci_process_rx_cb(ce_state, ath10k_htc_rx_completion_handler); 1304 } 1305 1306 /* Called by lower (CE) layer when data is received from the Target. 1307 * Only 10.4 firmware uses separate CE to transfer pktlog data. 1308 */ 1309 static void ath10k_pci_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state) 1310 { 1311 ath10k_pci_process_rx_cb(ce_state, 1312 ath10k_htt_rx_pktlog_completion_handler); 1313 } 1314 1315 /* Called by lower (CE) layer when a send to HTT Target completes. */ 1316 static void ath10k_pci_htt_tx_cb(struct ath10k_ce_pipe *ce_state) 1317 { 1318 struct ath10k *ar = ce_state->ar; 1319 struct sk_buff *skb; 1320 1321 while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) { 1322 /* no need to call tx completion for NULL pointers */ 1323 if (!skb) 1324 continue; 1325 1326 dma_unmap_single(ar->dev, ATH10K_SKB_CB(skb)->paddr, 1327 skb->len, DMA_TO_DEVICE); 1328 ath10k_htt_hif_tx_complete(ar, skb); 1329 } 1330 } 1331 1332 static void ath10k_pci_htt_rx_deliver(struct ath10k *ar, struct sk_buff *skb) 1333 { 1334 skb_pull(skb, sizeof(struct ath10k_htc_hdr)); 1335 ath10k_htt_t2h_msg_handler(ar, skb); 1336 } 1337 1338 /* Called by lower (CE) layer when HTT data is received from the Target. */ 1339 static void ath10k_pci_htt_rx_cb(struct ath10k_ce_pipe *ce_state) 1340 { 1341 /* CE4 polling needs to be done whenever CE pipe which transports 1342 * HTT Rx (target->host) is processed. 1343 */ 1344 ath10k_ce_per_engine_service(ce_state->ar, 4); 1345 1346 ath10k_pci_process_htt_rx_cb(ce_state, ath10k_pci_htt_rx_deliver); 1347 } 1348 1349 int ath10k_pci_hif_tx_sg(struct ath10k *ar, u8 pipe_id, 1350 struct ath10k_hif_sg_item *items, int n_items) 1351 { 1352 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 1353 struct ath10k_ce *ce = ath10k_ce_priv(ar); 1354 struct ath10k_pci_pipe *pci_pipe = &ar_pci->pipe_info[pipe_id]; 1355 struct ath10k_ce_pipe *ce_pipe = pci_pipe->ce_hdl; 1356 struct ath10k_ce_ring *src_ring = ce_pipe->src_ring; 1357 unsigned int nentries_mask; 1358 unsigned int sw_index; 1359 unsigned int write_index; 1360 int err, i = 0; 1361 1362 spin_lock_bh(&ce->ce_lock); 1363 1364 nentries_mask = src_ring->nentries_mask; 1365 sw_index = src_ring->sw_index; 1366 write_index = src_ring->write_index; 1367 1368 if (unlikely(CE_RING_DELTA(nentries_mask, 1369 write_index, sw_index - 1) < n_items)) { 1370 err = -ENOBUFS; 1371 goto err; 1372 } 1373 1374 for (i = 0; i < n_items - 1; i++) { 1375 ath10k_dbg(ar, ATH10K_DBG_PCI, 1376 "pci tx item %d paddr %pad len %d n_items %d\n", 1377 i, &items[i].paddr, items[i].len, n_items); 1378 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci tx data: ", 1379 items[i].vaddr, items[i].len); 1380 1381 err = ath10k_ce_send_nolock(ce_pipe, 1382 items[i].transfer_context, 1383 items[i].paddr, 1384 items[i].len, 1385 items[i].transfer_id, 1386 CE_SEND_FLAG_GATHER); 1387 if (err) 1388 goto err; 1389 } 1390 1391 /* `i` is equal to `n_items -1` after for() */ 1392 1393 ath10k_dbg(ar, ATH10K_DBG_PCI, 1394 "pci tx item %d paddr %pad len %d n_items %d\n", 1395 i, &items[i].paddr, items[i].len, n_items); 1396 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci tx data: ", 1397 items[i].vaddr, items[i].len); 1398 1399 err = ath10k_ce_send_nolock(ce_pipe, 1400 items[i].transfer_context, 1401 items[i].paddr, 1402 items[i].len, 1403 items[i].transfer_id, 1404 0); 1405 if (err) 1406 goto err; 1407 1408 spin_unlock_bh(&ce->ce_lock); 1409 return 0; 1410 1411 err: 1412 for (; i > 0; i--) 1413 __ath10k_ce_send_revert(ce_pipe); 1414 1415 spin_unlock_bh(&ce->ce_lock); 1416 return err; 1417 } 1418 1419 int ath10k_pci_hif_diag_read(struct ath10k *ar, u32 address, void *buf, 1420 size_t buf_len) 1421 { 1422 return ath10k_pci_diag_read_mem(ar, address, buf, buf_len); 1423 } 1424 1425 u16 ath10k_pci_hif_get_free_queue_number(struct ath10k *ar, u8 pipe) 1426 { 1427 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 1428 1429 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif get free queue number\n"); 1430 1431 return ath10k_ce_num_free_src_entries(ar_pci->pipe_info[pipe].ce_hdl); 1432 } 1433 1434 static void ath10k_pci_dump_registers(struct ath10k *ar, 1435 struct ath10k_fw_crash_data *crash_data) 1436 { 1437 __le32 reg_dump_values[REG_DUMP_COUNT_QCA988X] = {}; 1438 int i, ret; 1439 1440 lockdep_assert_held(&ar->dump_mutex); 1441 1442 ret = ath10k_pci_diag_read_hi(ar, ®_dump_values[0], 1443 hi_failure_state, 1444 REG_DUMP_COUNT_QCA988X * sizeof(__le32)); 1445 if (ret) { 1446 ath10k_err(ar, "failed to read firmware dump area: %d\n", ret); 1447 return; 1448 } 1449 1450 BUILD_BUG_ON(REG_DUMP_COUNT_QCA988X % 4); 1451 1452 ath10k_err(ar, "firmware register dump:\n"); 1453 for (i = 0; i < REG_DUMP_COUNT_QCA988X; i += 4) 1454 ath10k_err(ar, "[%02d]: 0x%08X 0x%08X 0x%08X 0x%08X\n", 1455 i, 1456 __le32_to_cpu(reg_dump_values[i]), 1457 __le32_to_cpu(reg_dump_values[i + 1]), 1458 __le32_to_cpu(reg_dump_values[i + 2]), 1459 __le32_to_cpu(reg_dump_values[i + 3])); 1460 1461 if (!crash_data) 1462 return; 1463 1464 for (i = 0; i < REG_DUMP_COUNT_QCA988X; i++) 1465 crash_data->registers[i] = reg_dump_values[i]; 1466 } 1467 1468 static int ath10k_pci_dump_memory_section(struct ath10k *ar, 1469 const struct ath10k_mem_region *mem_region, 1470 u8 *buf, size_t buf_len) 1471 { 1472 const struct ath10k_mem_section *cur_section, *next_section; 1473 unsigned int count, section_size, skip_size; 1474 int ret, i, j; 1475 1476 if (!mem_region || !buf) 1477 return 0; 1478 1479 cur_section = &mem_region->section_table.sections[0]; 1480 1481 if (mem_region->start > cur_section->start) { 1482 ath10k_warn(ar, "incorrect memdump region 0x%x with section start address 0x%x.\n", 1483 mem_region->start, cur_section->start); 1484 return 0; 1485 } 1486 1487 skip_size = cur_section->start - mem_region->start; 1488 1489 /* fill the gap between the first register section and register 1490 * start address 1491 */ 1492 for (i = 0; i < skip_size; i++) { 1493 *buf = ATH10K_MAGIC_NOT_COPIED; 1494 buf++; 1495 } 1496 1497 count = 0; 1498 1499 for (i = 0; cur_section != NULL; i++) { 1500 section_size = cur_section->end - cur_section->start; 1501 1502 if (section_size <= 0) { 1503 ath10k_warn(ar, "incorrect ramdump format with start address 0x%x and stop address 0x%x\n", 1504 cur_section->start, 1505 cur_section->end); 1506 break; 1507 } 1508 1509 if ((i + 1) == mem_region->section_table.size) { 1510 /* last section */ 1511 next_section = NULL; 1512 skip_size = 0; 1513 } else { 1514 next_section = cur_section + 1; 1515 1516 if (cur_section->end > next_section->start) { 1517 ath10k_warn(ar, "next ramdump section 0x%x is smaller than current end address 0x%x\n", 1518 next_section->start, 1519 cur_section->end); 1520 break; 1521 } 1522 1523 skip_size = next_section->start - cur_section->end; 1524 } 1525 1526 if (buf_len < (skip_size + section_size)) { 1527 ath10k_warn(ar, "ramdump buffer is too small: %zu\n", buf_len); 1528 break; 1529 } 1530 1531 buf_len -= skip_size + section_size; 1532 1533 /* read section to dest memory */ 1534 ret = ath10k_pci_diag_read_mem(ar, cur_section->start, 1535 buf, section_size); 1536 if (ret) { 1537 ath10k_warn(ar, "failed to read ramdump from section 0x%x: %d\n", 1538 cur_section->start, ret); 1539 break; 1540 } 1541 1542 buf += section_size; 1543 count += section_size; 1544 1545 /* fill in the gap between this section and the next */ 1546 for (j = 0; j < skip_size; j++) { 1547 *buf = ATH10K_MAGIC_NOT_COPIED; 1548 buf++; 1549 } 1550 1551 count += skip_size; 1552 1553 if (!next_section) 1554 /* this was the last section */ 1555 break; 1556 1557 cur_section = next_section; 1558 } 1559 1560 return count; 1561 } 1562 1563 static int ath10k_pci_set_ram_config(struct ath10k *ar, u32 config) 1564 { 1565 u32 val; 1566 1567 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + 1568 FW_RAM_CONFIG_ADDRESS, config); 1569 1570 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + 1571 FW_RAM_CONFIG_ADDRESS); 1572 if (val != config) { 1573 ath10k_warn(ar, "failed to set RAM config from 0x%x to 0x%x\n", 1574 val, config); 1575 return -EIO; 1576 } 1577 1578 return 0; 1579 } 1580 1581 /* Always returns the length */ 1582 static int ath10k_pci_dump_memory_sram(struct ath10k *ar, 1583 const struct ath10k_mem_region *region, 1584 u8 *buf) 1585 { 1586 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 1587 u32 base_addr, i; 1588 1589 base_addr = ioread32(ar_pci->mem + QCA99X0_PCIE_BAR0_START_REG); 1590 base_addr += region->start; 1591 1592 for (i = 0; i < region->len; i += 4) { 1593 iowrite32(base_addr + i, ar_pci->mem + QCA99X0_CPU_MEM_ADDR_REG); 1594 *(u32 *)(buf + i) = ioread32(ar_pci->mem + QCA99X0_CPU_MEM_DATA_REG); 1595 } 1596 1597 return region->len; 1598 } 1599 1600 /* if an error happened returns < 0, otherwise the length */ 1601 static int ath10k_pci_dump_memory_reg(struct ath10k *ar, 1602 const struct ath10k_mem_region *region, 1603 u8 *buf) 1604 { 1605 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 1606 u32 i; 1607 int ret; 1608 1609 mutex_lock(&ar->conf_mutex); 1610 if (ar->state != ATH10K_STATE_ON) { 1611 ath10k_warn(ar, "Skipping pci_dump_memory_reg invalid state\n"); 1612 ret = -EIO; 1613 goto done; 1614 } 1615 1616 for (i = 0; i < region->len; i += 4) 1617 *(u32 *)(buf + i) = ioread32(ar_pci->mem + region->start + i); 1618 1619 ret = region->len; 1620 done: 1621 mutex_unlock(&ar->conf_mutex); 1622 return ret; 1623 } 1624 1625 /* if an error happened returns < 0, otherwise the length */ 1626 static int ath10k_pci_dump_memory_generic(struct ath10k *ar, 1627 const struct ath10k_mem_region *current_region, 1628 u8 *buf) 1629 { 1630 int ret; 1631 1632 if (current_region->section_table.size > 0) 1633 /* Copy each section individually. */ 1634 return ath10k_pci_dump_memory_section(ar, 1635 current_region, 1636 buf, 1637 current_region->len); 1638 1639 /* No individual memory sections defined so we can 1640 * copy the entire memory region. 1641 */ 1642 ret = ath10k_pci_diag_read_mem(ar, 1643 current_region->start, 1644 buf, 1645 current_region->len); 1646 if (ret) { 1647 ath10k_warn(ar, "failed to copy ramdump region %s: %d\n", 1648 current_region->name, ret); 1649 return ret; 1650 } 1651 1652 return current_region->len; 1653 } 1654 1655 static void ath10k_pci_dump_memory(struct ath10k *ar, 1656 struct ath10k_fw_crash_data *crash_data) 1657 { 1658 const struct ath10k_hw_mem_layout *mem_layout; 1659 const struct ath10k_mem_region *current_region; 1660 struct ath10k_dump_ram_data_hdr *hdr; 1661 u32 count, shift; 1662 size_t buf_len; 1663 int ret, i; 1664 u8 *buf; 1665 1666 lockdep_assert_held(&ar->dump_mutex); 1667 1668 if (!crash_data) 1669 return; 1670 1671 mem_layout = ath10k_coredump_get_mem_layout(ar); 1672 if (!mem_layout) 1673 return; 1674 1675 current_region = &mem_layout->region_table.regions[0]; 1676 1677 buf = crash_data->ramdump_buf; 1678 buf_len = crash_data->ramdump_buf_len; 1679 1680 memset(buf, 0, buf_len); 1681 1682 for (i = 0; i < mem_layout->region_table.size; i++) { 1683 count = 0; 1684 1685 if (current_region->len > buf_len) { 1686 ath10k_warn(ar, "memory region %s size %d is larger that remaining ramdump buffer size %zu\n", 1687 current_region->name, 1688 current_region->len, 1689 buf_len); 1690 break; 1691 } 1692 1693 /* To get IRAM dump, the host driver needs to switch target 1694 * ram config from DRAM to IRAM. 1695 */ 1696 if (current_region->type == ATH10K_MEM_REGION_TYPE_IRAM1 || 1697 current_region->type == ATH10K_MEM_REGION_TYPE_IRAM2) { 1698 shift = current_region->start >> 20; 1699 1700 ret = ath10k_pci_set_ram_config(ar, shift); 1701 if (ret) { 1702 ath10k_warn(ar, "failed to switch ram config to IRAM for section %s: %d\n", 1703 current_region->name, ret); 1704 break; 1705 } 1706 } 1707 1708 /* Reserve space for the header. */ 1709 hdr = (void *)buf; 1710 buf += sizeof(*hdr); 1711 buf_len -= sizeof(*hdr); 1712 1713 switch (current_region->type) { 1714 case ATH10K_MEM_REGION_TYPE_IOSRAM: 1715 count = ath10k_pci_dump_memory_sram(ar, current_region, buf); 1716 break; 1717 case ATH10K_MEM_REGION_TYPE_IOREG: 1718 ret = ath10k_pci_dump_memory_reg(ar, current_region, buf); 1719 if (ret < 0) 1720 break; 1721 1722 count = ret; 1723 break; 1724 default: 1725 ret = ath10k_pci_dump_memory_generic(ar, current_region, buf); 1726 if (ret < 0) 1727 break; 1728 1729 count = ret; 1730 break; 1731 } 1732 1733 hdr->region_type = cpu_to_le32(current_region->type); 1734 hdr->start = cpu_to_le32(current_region->start); 1735 hdr->length = cpu_to_le32(count); 1736 1737 if (count == 0) 1738 /* Note: the header remains, just with zero length. */ 1739 break; 1740 1741 buf += count; 1742 buf_len -= count; 1743 1744 current_region++; 1745 } 1746 } 1747 1748 static void ath10k_pci_fw_dump_work(struct work_struct *work) 1749 { 1750 struct ath10k_pci *ar_pci = container_of(work, struct ath10k_pci, 1751 dump_work); 1752 struct ath10k_fw_crash_data *crash_data; 1753 struct ath10k *ar = ar_pci->ar; 1754 char guid[UUID_STRING_LEN + 1]; 1755 1756 mutex_lock(&ar->dump_mutex); 1757 1758 spin_lock_bh(&ar->data_lock); 1759 ar->stats.fw_crash_counter++; 1760 spin_unlock_bh(&ar->data_lock); 1761 1762 crash_data = ath10k_coredump_new(ar); 1763 1764 if (crash_data) 1765 scnprintf(guid, sizeof(guid), "%pUl", &crash_data->guid); 1766 else 1767 scnprintf(guid, sizeof(guid), "n/a"); 1768 1769 ath10k_err(ar, "firmware crashed! (guid %s)\n", guid); 1770 ath10k_print_driver_info(ar); 1771 ath10k_pci_dump_registers(ar, crash_data); 1772 ath10k_ce_dump_registers(ar, crash_data); 1773 ath10k_pci_dump_memory(ar, crash_data); 1774 1775 mutex_unlock(&ar->dump_mutex); 1776 1777 ath10k_core_start_recovery(ar); 1778 } 1779 1780 static void ath10k_pci_fw_crashed_dump(struct ath10k *ar) 1781 { 1782 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 1783 1784 queue_work(ar->workqueue, &ar_pci->dump_work); 1785 } 1786 1787 void ath10k_pci_hif_send_complete_check(struct ath10k *ar, u8 pipe, 1788 int force) 1789 { 1790 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 1791 1792 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif send complete check\n"); 1793 1794 if (!force) { 1795 int resources; 1796 /* 1797 * Decide whether to actually poll for completions, or just 1798 * wait for a later chance. 1799 * If there seem to be plenty of resources left, then just wait 1800 * since checking involves reading a CE register, which is a 1801 * relatively expensive operation. 1802 */ 1803 resources = ath10k_pci_hif_get_free_queue_number(ar, pipe); 1804 1805 /* 1806 * If at least 50% of the total resources are still available, 1807 * don't bother checking again yet. 1808 */ 1809 if (resources > (ar_pci->attr[pipe].src_nentries >> 1)) 1810 return; 1811 } 1812 ath10k_ce_per_engine_service(ar, pipe); 1813 } 1814 1815 static void ath10k_pci_rx_retry_sync(struct ath10k *ar) 1816 { 1817 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 1818 1819 del_timer_sync(&ar_pci->rx_post_retry); 1820 } 1821 1822 int ath10k_pci_hif_map_service_to_pipe(struct ath10k *ar, u16 service_id, 1823 u8 *ul_pipe, u8 *dl_pipe) 1824 { 1825 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 1826 const struct ce_service_to_pipe *entry; 1827 bool ul_set = false, dl_set = false; 1828 int i; 1829 1830 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif map service\n"); 1831 1832 for (i = 0; i < ARRAY_SIZE(pci_target_service_to_ce_map_wlan); i++) { 1833 entry = &ar_pci->serv_to_pipe[i]; 1834 1835 if (__le32_to_cpu(entry->service_id) != service_id) 1836 continue; 1837 1838 switch (__le32_to_cpu(entry->pipedir)) { 1839 case PIPEDIR_NONE: 1840 break; 1841 case PIPEDIR_IN: 1842 WARN_ON(dl_set); 1843 *dl_pipe = __le32_to_cpu(entry->pipenum); 1844 dl_set = true; 1845 break; 1846 case PIPEDIR_OUT: 1847 WARN_ON(ul_set); 1848 *ul_pipe = __le32_to_cpu(entry->pipenum); 1849 ul_set = true; 1850 break; 1851 case PIPEDIR_INOUT: 1852 WARN_ON(dl_set); 1853 WARN_ON(ul_set); 1854 *dl_pipe = __le32_to_cpu(entry->pipenum); 1855 *ul_pipe = __le32_to_cpu(entry->pipenum); 1856 dl_set = true; 1857 ul_set = true; 1858 break; 1859 } 1860 } 1861 1862 if (!ul_set || !dl_set) 1863 return -ENOENT; 1864 1865 return 0; 1866 } 1867 1868 void ath10k_pci_hif_get_default_pipe(struct ath10k *ar, 1869 u8 *ul_pipe, u8 *dl_pipe) 1870 { 1871 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif get default pipe\n"); 1872 1873 (void)ath10k_pci_hif_map_service_to_pipe(ar, 1874 ATH10K_HTC_SVC_ID_RSVD_CTRL, 1875 ul_pipe, dl_pipe); 1876 } 1877 1878 void ath10k_pci_irq_msi_fw_mask(struct ath10k *ar) 1879 { 1880 u32 val; 1881 1882 switch (ar->hw_rev) { 1883 case ATH10K_HW_QCA988X: 1884 case ATH10K_HW_QCA9887: 1885 case ATH10K_HW_QCA6174: 1886 case ATH10K_HW_QCA9377: 1887 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + 1888 CORE_CTRL_ADDRESS); 1889 val &= ~CORE_CTRL_PCIE_REG_31_MASK; 1890 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + 1891 CORE_CTRL_ADDRESS, val); 1892 break; 1893 case ATH10K_HW_QCA99X0: 1894 case ATH10K_HW_QCA9984: 1895 case ATH10K_HW_QCA9888: 1896 case ATH10K_HW_QCA4019: 1897 /* TODO: Find appropriate register configuration for QCA99X0 1898 * to mask irq/MSI. 1899 */ 1900 break; 1901 case ATH10K_HW_WCN3990: 1902 break; 1903 } 1904 } 1905 1906 static void ath10k_pci_irq_msi_fw_unmask(struct ath10k *ar) 1907 { 1908 u32 val; 1909 1910 switch (ar->hw_rev) { 1911 case ATH10K_HW_QCA988X: 1912 case ATH10K_HW_QCA9887: 1913 case ATH10K_HW_QCA6174: 1914 case ATH10K_HW_QCA9377: 1915 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + 1916 CORE_CTRL_ADDRESS); 1917 val |= CORE_CTRL_PCIE_REG_31_MASK; 1918 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + 1919 CORE_CTRL_ADDRESS, val); 1920 break; 1921 case ATH10K_HW_QCA99X0: 1922 case ATH10K_HW_QCA9984: 1923 case ATH10K_HW_QCA9888: 1924 case ATH10K_HW_QCA4019: 1925 /* TODO: Find appropriate register configuration for QCA99X0 1926 * to unmask irq/MSI. 1927 */ 1928 break; 1929 case ATH10K_HW_WCN3990: 1930 break; 1931 } 1932 } 1933 1934 static void ath10k_pci_irq_disable(struct ath10k *ar) 1935 { 1936 ath10k_ce_disable_interrupts(ar); 1937 ath10k_pci_disable_and_clear_legacy_irq(ar); 1938 ath10k_pci_irq_msi_fw_mask(ar); 1939 } 1940 1941 static void ath10k_pci_irq_sync(struct ath10k *ar) 1942 { 1943 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 1944 1945 synchronize_irq(ar_pci->pdev->irq); 1946 } 1947 1948 static void ath10k_pci_irq_enable(struct ath10k *ar) 1949 { 1950 ath10k_ce_enable_interrupts(ar); 1951 ath10k_pci_enable_legacy_irq(ar); 1952 ath10k_pci_irq_msi_fw_unmask(ar); 1953 } 1954 1955 static int ath10k_pci_hif_start(struct ath10k *ar) 1956 { 1957 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 1958 1959 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif start\n"); 1960 1961 ath10k_core_napi_enable(ar); 1962 1963 ath10k_pci_irq_enable(ar); 1964 ath10k_pci_rx_post(ar); 1965 1966 pcie_capability_clear_and_set_word(ar_pci->pdev, PCI_EXP_LNKCTL, 1967 PCI_EXP_LNKCTL_ASPMC, 1968 ar_pci->link_ctl & PCI_EXP_LNKCTL_ASPMC); 1969 1970 return 0; 1971 } 1972 1973 static void ath10k_pci_rx_pipe_cleanup(struct ath10k_pci_pipe *pci_pipe) 1974 { 1975 struct ath10k *ar; 1976 struct ath10k_ce_pipe *ce_pipe; 1977 struct ath10k_ce_ring *ce_ring; 1978 struct sk_buff *skb; 1979 int i; 1980 1981 ar = pci_pipe->hif_ce_state; 1982 ce_pipe = pci_pipe->ce_hdl; 1983 ce_ring = ce_pipe->dest_ring; 1984 1985 if (!ce_ring) 1986 return; 1987 1988 if (!pci_pipe->buf_sz) 1989 return; 1990 1991 for (i = 0; i < ce_ring->nentries; i++) { 1992 skb = ce_ring->per_transfer_context[i]; 1993 if (!skb) 1994 continue; 1995 1996 ce_ring->per_transfer_context[i] = NULL; 1997 1998 dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr, 1999 skb->len + skb_tailroom(skb), 2000 DMA_FROM_DEVICE); 2001 dev_kfree_skb_any(skb); 2002 } 2003 } 2004 2005 static void ath10k_pci_tx_pipe_cleanup(struct ath10k_pci_pipe *pci_pipe) 2006 { 2007 struct ath10k *ar; 2008 struct ath10k_ce_pipe *ce_pipe; 2009 struct ath10k_ce_ring *ce_ring; 2010 struct sk_buff *skb; 2011 int i; 2012 2013 ar = pci_pipe->hif_ce_state; 2014 ce_pipe = pci_pipe->ce_hdl; 2015 ce_ring = ce_pipe->src_ring; 2016 2017 if (!ce_ring) 2018 return; 2019 2020 if (!pci_pipe->buf_sz) 2021 return; 2022 2023 for (i = 0; i < ce_ring->nentries; i++) { 2024 skb = ce_ring->per_transfer_context[i]; 2025 if (!skb) 2026 continue; 2027 2028 ce_ring->per_transfer_context[i] = NULL; 2029 2030 ath10k_htc_tx_completion_handler(ar, skb); 2031 } 2032 } 2033 2034 /* 2035 * Cleanup residual buffers for device shutdown: 2036 * buffers that were enqueued for receive 2037 * buffers that were to be sent 2038 * Note: Buffers that had completed but which were 2039 * not yet processed are on a completion queue. They 2040 * are handled when the completion thread shuts down. 2041 */ 2042 static void ath10k_pci_buffer_cleanup(struct ath10k *ar) 2043 { 2044 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 2045 int pipe_num; 2046 2047 for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) { 2048 struct ath10k_pci_pipe *pipe_info; 2049 2050 pipe_info = &ar_pci->pipe_info[pipe_num]; 2051 ath10k_pci_rx_pipe_cleanup(pipe_info); 2052 ath10k_pci_tx_pipe_cleanup(pipe_info); 2053 } 2054 } 2055 2056 void ath10k_pci_ce_deinit(struct ath10k *ar) 2057 { 2058 int i; 2059 2060 for (i = 0; i < CE_COUNT; i++) 2061 ath10k_ce_deinit_pipe(ar, i); 2062 } 2063 2064 void ath10k_pci_flush(struct ath10k *ar) 2065 { 2066 ath10k_pci_rx_retry_sync(ar); 2067 ath10k_pci_buffer_cleanup(ar); 2068 } 2069 2070 static void ath10k_pci_hif_stop(struct ath10k *ar) 2071 { 2072 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 2073 unsigned long flags; 2074 2075 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif stop\n"); 2076 2077 ath10k_pci_irq_disable(ar); 2078 ath10k_pci_irq_sync(ar); 2079 2080 ath10k_core_napi_sync_disable(ar); 2081 2082 cancel_work_sync(&ar_pci->dump_work); 2083 2084 /* Most likely the device has HTT Rx ring configured. The only way to 2085 * prevent the device from accessing (and possible corrupting) host 2086 * memory is to reset the chip now. 2087 * 2088 * There's also no known way of masking MSI interrupts on the device. 2089 * For ranged MSI the CE-related interrupts can be masked. However 2090 * regardless how many MSI interrupts are assigned the first one 2091 * is always used for firmware indications (crashes) and cannot be 2092 * masked. To prevent the device from asserting the interrupt reset it 2093 * before proceeding with cleanup. 2094 */ 2095 ath10k_pci_safe_chip_reset(ar); 2096 2097 ath10k_pci_flush(ar); 2098 2099 spin_lock_irqsave(&ar_pci->ps_lock, flags); 2100 WARN_ON(ar_pci->ps_wake_refcount > 0); 2101 spin_unlock_irqrestore(&ar_pci->ps_lock, flags); 2102 } 2103 2104 int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar, 2105 void *req, u32 req_len, 2106 void *resp, u32 *resp_len) 2107 { 2108 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 2109 struct ath10k_pci_pipe *pci_tx = &ar_pci->pipe_info[BMI_CE_NUM_TO_TARG]; 2110 struct ath10k_pci_pipe *pci_rx = &ar_pci->pipe_info[BMI_CE_NUM_TO_HOST]; 2111 struct ath10k_ce_pipe *ce_tx = pci_tx->ce_hdl; 2112 struct ath10k_ce_pipe *ce_rx = pci_rx->ce_hdl; 2113 dma_addr_t req_paddr = 0; 2114 dma_addr_t resp_paddr = 0; 2115 struct bmi_xfer xfer = {}; 2116 void *treq, *tresp = NULL; 2117 int ret = 0; 2118 2119 might_sleep(); 2120 2121 if (resp && !resp_len) 2122 return -EINVAL; 2123 2124 if (resp && resp_len && *resp_len == 0) 2125 return -EINVAL; 2126 2127 treq = kmemdup(req, req_len, GFP_KERNEL); 2128 if (!treq) 2129 return -ENOMEM; 2130 2131 req_paddr = dma_map_single(ar->dev, treq, req_len, DMA_TO_DEVICE); 2132 ret = dma_mapping_error(ar->dev, req_paddr); 2133 if (ret) { 2134 ret = -EIO; 2135 goto err_dma; 2136 } 2137 2138 if (resp && resp_len) { 2139 tresp = kzalloc(*resp_len, GFP_KERNEL); 2140 if (!tresp) { 2141 ret = -ENOMEM; 2142 goto err_req; 2143 } 2144 2145 resp_paddr = dma_map_single(ar->dev, tresp, *resp_len, 2146 DMA_FROM_DEVICE); 2147 ret = dma_mapping_error(ar->dev, resp_paddr); 2148 if (ret) { 2149 ret = -EIO; 2150 goto err_req; 2151 } 2152 2153 xfer.wait_for_resp = true; 2154 xfer.resp_len = 0; 2155 2156 ath10k_ce_rx_post_buf(ce_rx, &xfer, resp_paddr); 2157 } 2158 2159 ret = ath10k_ce_send(ce_tx, &xfer, req_paddr, req_len, -1, 0); 2160 if (ret) 2161 goto err_resp; 2162 2163 ret = ath10k_pci_bmi_wait(ar, ce_tx, ce_rx, &xfer); 2164 if (ret) { 2165 dma_addr_t unused_buffer; 2166 unsigned int unused_nbytes; 2167 unsigned int unused_id; 2168 2169 ath10k_ce_cancel_send_next(ce_tx, NULL, &unused_buffer, 2170 &unused_nbytes, &unused_id); 2171 } else { 2172 /* non-zero means we did not time out */ 2173 ret = 0; 2174 } 2175 2176 err_resp: 2177 if (resp) { 2178 dma_addr_t unused_buffer; 2179 2180 ath10k_ce_revoke_recv_next(ce_rx, NULL, &unused_buffer); 2181 dma_unmap_single(ar->dev, resp_paddr, 2182 *resp_len, DMA_FROM_DEVICE); 2183 } 2184 err_req: 2185 dma_unmap_single(ar->dev, req_paddr, req_len, DMA_TO_DEVICE); 2186 2187 if (ret == 0 && resp_len) { 2188 *resp_len = min(*resp_len, xfer.resp_len); 2189 memcpy(resp, tresp, *resp_len); 2190 } 2191 err_dma: 2192 kfree(treq); 2193 kfree(tresp); 2194 2195 return ret; 2196 } 2197 2198 static void ath10k_pci_bmi_send_done(struct ath10k_ce_pipe *ce_state) 2199 { 2200 struct bmi_xfer *xfer; 2201 2202 if (ath10k_ce_completed_send_next(ce_state, (void **)&xfer)) 2203 return; 2204 2205 xfer->tx_done = true; 2206 } 2207 2208 static void ath10k_pci_bmi_recv_data(struct ath10k_ce_pipe *ce_state) 2209 { 2210 struct ath10k *ar = ce_state->ar; 2211 struct bmi_xfer *xfer; 2212 unsigned int nbytes; 2213 2214 if (ath10k_ce_completed_recv_next(ce_state, (void **)&xfer, 2215 &nbytes)) 2216 return; 2217 2218 if (WARN_ON_ONCE(!xfer)) 2219 return; 2220 2221 if (!xfer->wait_for_resp) { 2222 ath10k_warn(ar, "unexpected: BMI data received; ignoring\n"); 2223 return; 2224 } 2225 2226 xfer->resp_len = nbytes; 2227 xfer->rx_done = true; 2228 } 2229 2230 static int ath10k_pci_bmi_wait(struct ath10k *ar, 2231 struct ath10k_ce_pipe *tx_pipe, 2232 struct ath10k_ce_pipe *rx_pipe, 2233 struct bmi_xfer *xfer) 2234 { 2235 unsigned long timeout = jiffies + BMI_COMMUNICATION_TIMEOUT_HZ; 2236 unsigned long started = jiffies; 2237 unsigned long dur; 2238 int ret; 2239 2240 while (time_before_eq(jiffies, timeout)) { 2241 ath10k_pci_bmi_send_done(tx_pipe); 2242 ath10k_pci_bmi_recv_data(rx_pipe); 2243 2244 if (xfer->tx_done && (xfer->rx_done == xfer->wait_for_resp)) { 2245 ret = 0; 2246 goto out; 2247 } 2248 2249 schedule(); 2250 } 2251 2252 ret = -ETIMEDOUT; 2253 2254 out: 2255 dur = jiffies - started; 2256 if (dur > HZ) 2257 ath10k_dbg(ar, ATH10K_DBG_BMI, 2258 "bmi cmd took %lu jiffies hz %d ret %d\n", 2259 dur, HZ, ret); 2260 return ret; 2261 } 2262 2263 /* 2264 * Send an interrupt to the device to wake up the Target CPU 2265 * so it has an opportunity to notice any changed state. 2266 */ 2267 static int ath10k_pci_wake_target_cpu(struct ath10k *ar) 2268 { 2269 u32 addr, val; 2270 2271 addr = SOC_CORE_BASE_ADDRESS + CORE_CTRL_ADDRESS; 2272 val = ath10k_pci_read32(ar, addr); 2273 val |= CORE_CTRL_CPU_INTR_MASK; 2274 ath10k_pci_write32(ar, addr, val); 2275 2276 return 0; 2277 } 2278 2279 static int ath10k_pci_get_num_banks(struct ath10k *ar) 2280 { 2281 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 2282 2283 switch (ar_pci->pdev->device) { 2284 case QCA988X_2_0_DEVICE_ID_UBNT: 2285 case QCA988X_2_0_DEVICE_ID: 2286 case QCA99X0_2_0_DEVICE_ID: 2287 case QCA9888_2_0_DEVICE_ID: 2288 case QCA9984_1_0_DEVICE_ID: 2289 case QCA9887_1_0_DEVICE_ID: 2290 return 1; 2291 case QCA6164_2_1_DEVICE_ID: 2292 case QCA6174_2_1_DEVICE_ID: 2293 switch (MS(ar->bus_param.chip_id, SOC_CHIP_ID_REV)) { 2294 case QCA6174_HW_1_0_CHIP_ID_REV: 2295 case QCA6174_HW_1_1_CHIP_ID_REV: 2296 case QCA6174_HW_2_1_CHIP_ID_REV: 2297 case QCA6174_HW_2_2_CHIP_ID_REV: 2298 return 3; 2299 case QCA6174_HW_1_3_CHIP_ID_REV: 2300 return 2; 2301 case QCA6174_HW_3_0_CHIP_ID_REV: 2302 case QCA6174_HW_3_1_CHIP_ID_REV: 2303 case QCA6174_HW_3_2_CHIP_ID_REV: 2304 return 9; 2305 } 2306 break; 2307 case QCA9377_1_0_DEVICE_ID: 2308 return 9; 2309 } 2310 2311 ath10k_warn(ar, "unknown number of banks, assuming 1\n"); 2312 return 1; 2313 } 2314 2315 static int ath10k_bus_get_num_banks(struct ath10k *ar) 2316 { 2317 struct ath10k_ce *ce = ath10k_ce_priv(ar); 2318 2319 return ce->bus_ops->get_num_banks(ar); 2320 } 2321 2322 int ath10k_pci_init_config(struct ath10k *ar) 2323 { 2324 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 2325 u32 interconnect_targ_addr; 2326 u32 pcie_state_targ_addr = 0; 2327 u32 pipe_cfg_targ_addr = 0; 2328 u32 svc_to_pipe_map = 0; 2329 u32 pcie_config_flags = 0; 2330 u32 ealloc_value; 2331 u32 ealloc_targ_addr; 2332 u32 flag2_value; 2333 u32 flag2_targ_addr; 2334 int ret = 0; 2335 2336 /* Download to Target the CE Config and the service-to-CE map */ 2337 interconnect_targ_addr = 2338 host_interest_item_address(HI_ITEM(hi_interconnect_state)); 2339 2340 /* Supply Target-side CE configuration */ 2341 ret = ath10k_pci_diag_read32(ar, interconnect_targ_addr, 2342 &pcie_state_targ_addr); 2343 if (ret != 0) { 2344 ath10k_err(ar, "Failed to get pcie state addr: %d\n", ret); 2345 return ret; 2346 } 2347 2348 if (pcie_state_targ_addr == 0) { 2349 ret = -EIO; 2350 ath10k_err(ar, "Invalid pcie state addr\n"); 2351 return ret; 2352 } 2353 2354 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr + 2355 offsetof(struct pcie_state, 2356 pipe_cfg_addr)), 2357 &pipe_cfg_targ_addr); 2358 if (ret != 0) { 2359 ath10k_err(ar, "Failed to get pipe cfg addr: %d\n", ret); 2360 return ret; 2361 } 2362 2363 if (pipe_cfg_targ_addr == 0) { 2364 ret = -EIO; 2365 ath10k_err(ar, "Invalid pipe cfg addr\n"); 2366 return ret; 2367 } 2368 2369 ret = ath10k_pci_diag_write_mem(ar, pipe_cfg_targ_addr, 2370 ar_pci->pipe_config, 2371 sizeof(struct ce_pipe_config) * 2372 NUM_TARGET_CE_CONFIG_WLAN); 2373 2374 if (ret != 0) { 2375 ath10k_err(ar, "Failed to write pipe cfg: %d\n", ret); 2376 return ret; 2377 } 2378 2379 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr + 2380 offsetof(struct pcie_state, 2381 svc_to_pipe_map)), 2382 &svc_to_pipe_map); 2383 if (ret != 0) { 2384 ath10k_err(ar, "Failed to get svc/pipe map: %d\n", ret); 2385 return ret; 2386 } 2387 2388 if (svc_to_pipe_map == 0) { 2389 ret = -EIO; 2390 ath10k_err(ar, "Invalid svc_to_pipe map\n"); 2391 return ret; 2392 } 2393 2394 ret = ath10k_pci_diag_write_mem(ar, svc_to_pipe_map, 2395 ar_pci->serv_to_pipe, 2396 sizeof(pci_target_service_to_ce_map_wlan)); 2397 if (ret != 0) { 2398 ath10k_err(ar, "Failed to write svc/pipe map: %d\n", ret); 2399 return ret; 2400 } 2401 2402 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr + 2403 offsetof(struct pcie_state, 2404 config_flags)), 2405 &pcie_config_flags); 2406 if (ret != 0) { 2407 ath10k_err(ar, "Failed to get pcie config_flags: %d\n", ret); 2408 return ret; 2409 } 2410 2411 pcie_config_flags &= ~PCIE_CONFIG_FLAG_ENABLE_L1; 2412 2413 ret = ath10k_pci_diag_write32(ar, (pcie_state_targ_addr + 2414 offsetof(struct pcie_state, 2415 config_flags)), 2416 pcie_config_flags); 2417 if (ret != 0) { 2418 ath10k_err(ar, "Failed to write pcie config_flags: %d\n", ret); 2419 return ret; 2420 } 2421 2422 /* configure early allocation */ 2423 ealloc_targ_addr = host_interest_item_address(HI_ITEM(hi_early_alloc)); 2424 2425 ret = ath10k_pci_diag_read32(ar, ealloc_targ_addr, &ealloc_value); 2426 if (ret != 0) { 2427 ath10k_err(ar, "Failed to get early alloc val: %d\n", ret); 2428 return ret; 2429 } 2430 2431 /* first bank is switched to IRAM */ 2432 ealloc_value |= ((HI_EARLY_ALLOC_MAGIC << HI_EARLY_ALLOC_MAGIC_SHIFT) & 2433 HI_EARLY_ALLOC_MAGIC_MASK); 2434 ealloc_value |= ((ath10k_bus_get_num_banks(ar) << 2435 HI_EARLY_ALLOC_IRAM_BANKS_SHIFT) & 2436 HI_EARLY_ALLOC_IRAM_BANKS_MASK); 2437 2438 ret = ath10k_pci_diag_write32(ar, ealloc_targ_addr, ealloc_value); 2439 if (ret != 0) { 2440 ath10k_err(ar, "Failed to set early alloc val: %d\n", ret); 2441 return ret; 2442 } 2443 2444 /* Tell Target to proceed with initialization */ 2445 flag2_targ_addr = host_interest_item_address(HI_ITEM(hi_option_flag2)); 2446 2447 ret = ath10k_pci_diag_read32(ar, flag2_targ_addr, &flag2_value); 2448 if (ret != 0) { 2449 ath10k_err(ar, "Failed to get option val: %d\n", ret); 2450 return ret; 2451 } 2452 2453 flag2_value |= HI_OPTION_EARLY_CFG_DONE; 2454 2455 ret = ath10k_pci_diag_write32(ar, flag2_targ_addr, flag2_value); 2456 if (ret != 0) { 2457 ath10k_err(ar, "Failed to set option val: %d\n", ret); 2458 return ret; 2459 } 2460 2461 return 0; 2462 } 2463 2464 static void ath10k_pci_override_ce_config(struct ath10k *ar) 2465 { 2466 struct ce_attr *attr; 2467 struct ce_pipe_config *config; 2468 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 2469 2470 /* For QCA6174 we're overriding the Copy Engine 5 configuration, 2471 * since it is currently used for other feature. 2472 */ 2473 2474 /* Override Host's Copy Engine 5 configuration */ 2475 attr = &ar_pci->attr[5]; 2476 attr->src_sz_max = 0; 2477 attr->dest_nentries = 0; 2478 2479 /* Override Target firmware's Copy Engine configuration */ 2480 config = &ar_pci->pipe_config[5]; 2481 config->pipedir = __cpu_to_le32(PIPEDIR_OUT); 2482 config->nbytes_max = __cpu_to_le32(2048); 2483 2484 /* Map from service/endpoint to Copy Engine */ 2485 ar_pci->serv_to_pipe[15].pipenum = __cpu_to_le32(1); 2486 } 2487 2488 int ath10k_pci_alloc_pipes(struct ath10k *ar) 2489 { 2490 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 2491 struct ath10k_pci_pipe *pipe; 2492 struct ath10k_ce *ce = ath10k_ce_priv(ar); 2493 int i, ret; 2494 2495 for (i = 0; i < CE_COUNT; i++) { 2496 pipe = &ar_pci->pipe_info[i]; 2497 pipe->ce_hdl = &ce->ce_states[i]; 2498 pipe->pipe_num = i; 2499 pipe->hif_ce_state = ar; 2500 2501 ret = ath10k_ce_alloc_pipe(ar, i, &ar_pci->attr[i]); 2502 if (ret) { 2503 ath10k_err(ar, "failed to allocate copy engine pipe %d: %d\n", 2504 i, ret); 2505 return ret; 2506 } 2507 2508 /* Last CE is Diagnostic Window */ 2509 if (i == CE_DIAG_PIPE) { 2510 ar_pci->ce_diag = pipe->ce_hdl; 2511 continue; 2512 } 2513 2514 pipe->buf_sz = (size_t)(ar_pci->attr[i].src_sz_max); 2515 } 2516 2517 return 0; 2518 } 2519 2520 void ath10k_pci_free_pipes(struct ath10k *ar) 2521 { 2522 int i; 2523 2524 for (i = 0; i < CE_COUNT; i++) 2525 ath10k_ce_free_pipe(ar, i); 2526 } 2527 2528 int ath10k_pci_init_pipes(struct ath10k *ar) 2529 { 2530 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 2531 int i, ret; 2532 2533 for (i = 0; i < CE_COUNT; i++) { 2534 ret = ath10k_ce_init_pipe(ar, i, &ar_pci->attr[i]); 2535 if (ret) { 2536 ath10k_err(ar, "failed to initialize copy engine pipe %d: %d\n", 2537 i, ret); 2538 return ret; 2539 } 2540 } 2541 2542 return 0; 2543 } 2544 2545 static bool ath10k_pci_has_fw_crashed(struct ath10k *ar) 2546 { 2547 return ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS) & 2548 FW_IND_EVENT_PENDING; 2549 } 2550 2551 static void ath10k_pci_fw_crashed_clear(struct ath10k *ar) 2552 { 2553 u32 val; 2554 2555 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS); 2556 val &= ~FW_IND_EVENT_PENDING; 2557 ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, val); 2558 } 2559 2560 static bool ath10k_pci_has_device_gone(struct ath10k *ar) 2561 { 2562 u32 val; 2563 2564 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS); 2565 return (val == 0xffffffff); 2566 } 2567 2568 /* this function effectively clears target memory controller assert line */ 2569 static void ath10k_pci_warm_reset_si0(struct ath10k *ar) 2570 { 2571 u32 val; 2572 2573 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS); 2574 ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS, 2575 val | SOC_RESET_CONTROL_SI0_RST_MASK); 2576 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS); 2577 2578 msleep(10); 2579 2580 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS); 2581 ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS, 2582 val & ~SOC_RESET_CONTROL_SI0_RST_MASK); 2583 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS); 2584 2585 msleep(10); 2586 } 2587 2588 static void ath10k_pci_warm_reset_cpu(struct ath10k *ar) 2589 { 2590 u32 val; 2591 2592 ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, 0); 2593 2594 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS); 2595 ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS, 2596 val | SOC_RESET_CONTROL_CPU_WARM_RST_MASK); 2597 } 2598 2599 static void ath10k_pci_warm_reset_ce(struct ath10k *ar) 2600 { 2601 u32 val; 2602 2603 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS); 2604 2605 ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS, 2606 val | SOC_RESET_CONTROL_CE_RST_MASK); 2607 msleep(10); 2608 ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS, 2609 val & ~SOC_RESET_CONTROL_CE_RST_MASK); 2610 } 2611 2612 static void ath10k_pci_warm_reset_clear_lf(struct ath10k *ar) 2613 { 2614 u32 val; 2615 2616 val = ath10k_pci_soc_read32(ar, SOC_LF_TIMER_CONTROL0_ADDRESS); 2617 ath10k_pci_soc_write32(ar, SOC_LF_TIMER_CONTROL0_ADDRESS, 2618 val & ~SOC_LF_TIMER_CONTROL0_ENABLE_MASK); 2619 } 2620 2621 static int ath10k_pci_warm_reset(struct ath10k *ar) 2622 { 2623 int ret; 2624 2625 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot warm reset\n"); 2626 2627 spin_lock_bh(&ar->data_lock); 2628 ar->stats.fw_warm_reset_counter++; 2629 spin_unlock_bh(&ar->data_lock); 2630 2631 ath10k_pci_irq_disable(ar); 2632 2633 /* Make sure the target CPU is not doing anything dangerous, e.g. if it 2634 * were to access copy engine while host performs copy engine reset 2635 * then it is possible for the device to confuse pci-e controller to 2636 * the point of bringing host system to a complete stop (i.e. hang). 2637 */ 2638 ath10k_pci_warm_reset_si0(ar); 2639 ath10k_pci_warm_reset_cpu(ar); 2640 ath10k_pci_init_pipes(ar); 2641 ath10k_pci_wait_for_target_init(ar); 2642 2643 ath10k_pci_warm_reset_clear_lf(ar); 2644 ath10k_pci_warm_reset_ce(ar); 2645 ath10k_pci_warm_reset_cpu(ar); 2646 ath10k_pci_init_pipes(ar); 2647 2648 ret = ath10k_pci_wait_for_target_init(ar); 2649 if (ret) { 2650 ath10k_warn(ar, "failed to wait for target init: %d\n", ret); 2651 return ret; 2652 } 2653 2654 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot warm reset complete\n"); 2655 2656 return 0; 2657 } 2658 2659 static int ath10k_pci_qca99x0_soft_chip_reset(struct ath10k *ar) 2660 { 2661 ath10k_pci_irq_disable(ar); 2662 return ath10k_pci_qca99x0_chip_reset(ar); 2663 } 2664 2665 static int ath10k_pci_safe_chip_reset(struct ath10k *ar) 2666 { 2667 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 2668 2669 if (!ar_pci->pci_soft_reset) 2670 return -ENOTSUPP; 2671 2672 return ar_pci->pci_soft_reset(ar); 2673 } 2674 2675 static int ath10k_pci_qca988x_chip_reset(struct ath10k *ar) 2676 { 2677 int i, ret; 2678 u32 val; 2679 2680 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot 988x chip reset\n"); 2681 2682 /* Some hardware revisions (e.g. CUS223v2) has issues with cold reset. 2683 * It is thus preferred to use warm reset which is safer but may not be 2684 * able to recover the device from all possible fail scenarios. 2685 * 2686 * Warm reset doesn't always work on first try so attempt it a few 2687 * times before giving up. 2688 */ 2689 for (i = 0; i < ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS; i++) { 2690 ret = ath10k_pci_warm_reset(ar); 2691 if (ret) { 2692 ath10k_warn(ar, "failed to warm reset attempt %d of %d: %d\n", 2693 i + 1, ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS, 2694 ret); 2695 continue; 2696 } 2697 2698 /* FIXME: Sometimes copy engine doesn't recover after warm 2699 * reset. In most cases this needs cold reset. In some of these 2700 * cases the device is in such a state that a cold reset may 2701 * lock up the host. 2702 * 2703 * Reading any host interest register via copy engine is 2704 * sufficient to verify if device is capable of booting 2705 * firmware blob. 2706 */ 2707 ret = ath10k_pci_init_pipes(ar); 2708 if (ret) { 2709 ath10k_warn(ar, "failed to init copy engine: %d\n", 2710 ret); 2711 continue; 2712 } 2713 2714 ret = ath10k_pci_diag_read32(ar, QCA988X_HOST_INTEREST_ADDRESS, 2715 &val); 2716 if (ret) { 2717 ath10k_warn(ar, "failed to poke copy engine: %d\n", 2718 ret); 2719 continue; 2720 } 2721 2722 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot chip reset complete (warm)\n"); 2723 return 0; 2724 } 2725 2726 if (ath10k_pci_reset_mode == ATH10K_PCI_RESET_WARM_ONLY) { 2727 ath10k_warn(ar, "refusing cold reset as requested\n"); 2728 return -EPERM; 2729 } 2730 2731 ret = ath10k_pci_cold_reset(ar); 2732 if (ret) { 2733 ath10k_warn(ar, "failed to cold reset: %d\n", ret); 2734 return ret; 2735 } 2736 2737 ret = ath10k_pci_wait_for_target_init(ar); 2738 if (ret) { 2739 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n", 2740 ret); 2741 return ret; 2742 } 2743 2744 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca988x chip reset complete (cold)\n"); 2745 2746 return 0; 2747 } 2748 2749 static int ath10k_pci_qca6174_chip_reset(struct ath10k *ar) 2750 { 2751 int ret; 2752 2753 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca6174 chip reset\n"); 2754 2755 /* FIXME: QCA6174 requires cold + warm reset to work. */ 2756 2757 ret = ath10k_pci_cold_reset(ar); 2758 if (ret) { 2759 ath10k_warn(ar, "failed to cold reset: %d\n", ret); 2760 return ret; 2761 } 2762 2763 ret = ath10k_pci_wait_for_target_init(ar); 2764 if (ret) { 2765 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n", 2766 ret); 2767 return ret; 2768 } 2769 2770 ret = ath10k_pci_warm_reset(ar); 2771 if (ret) { 2772 ath10k_warn(ar, "failed to warm reset: %d\n", ret); 2773 return ret; 2774 } 2775 2776 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca6174 chip reset complete (cold)\n"); 2777 2778 return 0; 2779 } 2780 2781 static int ath10k_pci_qca99x0_chip_reset(struct ath10k *ar) 2782 { 2783 int ret; 2784 2785 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca99x0 chip reset\n"); 2786 2787 ret = ath10k_pci_cold_reset(ar); 2788 if (ret) { 2789 ath10k_warn(ar, "failed to cold reset: %d\n", ret); 2790 return ret; 2791 } 2792 2793 ret = ath10k_pci_wait_for_target_init(ar); 2794 if (ret) { 2795 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n", 2796 ret); 2797 return ret; 2798 } 2799 2800 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca99x0 chip reset complete (cold)\n"); 2801 2802 return 0; 2803 } 2804 2805 static int ath10k_pci_chip_reset(struct ath10k *ar) 2806 { 2807 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 2808 2809 if (WARN_ON(!ar_pci->pci_hard_reset)) 2810 return -ENOTSUPP; 2811 2812 return ar_pci->pci_hard_reset(ar); 2813 } 2814 2815 static int ath10k_pci_hif_power_up(struct ath10k *ar, 2816 enum ath10k_firmware_mode fw_mode) 2817 { 2818 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 2819 int ret; 2820 2821 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif power up\n"); 2822 2823 pcie_capability_read_word(ar_pci->pdev, PCI_EXP_LNKCTL, 2824 &ar_pci->link_ctl); 2825 pcie_capability_clear_word(ar_pci->pdev, PCI_EXP_LNKCTL, 2826 PCI_EXP_LNKCTL_ASPMC); 2827 2828 /* 2829 * Bring the target up cleanly. 2830 * 2831 * The target may be in an undefined state with an AUX-powered Target 2832 * and a Host in WoW mode. If the Host crashes, loses power, or is 2833 * restarted (without unloading the driver) then the Target is left 2834 * (aux) powered and running. On a subsequent driver load, the Target 2835 * is in an unexpected state. We try to catch that here in order to 2836 * reset the Target and retry the probe. 2837 */ 2838 ret = ath10k_pci_chip_reset(ar); 2839 if (ret) { 2840 if (ath10k_pci_has_fw_crashed(ar)) { 2841 ath10k_warn(ar, "firmware crashed during chip reset\n"); 2842 ath10k_pci_fw_crashed_clear(ar); 2843 ath10k_pci_fw_crashed_dump(ar); 2844 } 2845 2846 ath10k_err(ar, "failed to reset chip: %d\n", ret); 2847 goto err_sleep; 2848 } 2849 2850 ret = ath10k_pci_init_pipes(ar); 2851 if (ret) { 2852 ath10k_err(ar, "failed to initialize CE: %d\n", ret); 2853 goto err_sleep; 2854 } 2855 2856 ret = ath10k_pci_init_config(ar); 2857 if (ret) { 2858 ath10k_err(ar, "failed to setup init config: %d\n", ret); 2859 goto err_ce; 2860 } 2861 2862 ret = ath10k_pci_wake_target_cpu(ar); 2863 if (ret) { 2864 ath10k_err(ar, "could not wake up target CPU: %d\n", ret); 2865 goto err_ce; 2866 } 2867 2868 return 0; 2869 2870 err_ce: 2871 ath10k_pci_ce_deinit(ar); 2872 2873 err_sleep: 2874 return ret; 2875 } 2876 2877 void ath10k_pci_hif_power_down(struct ath10k *ar) 2878 { 2879 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif power down\n"); 2880 2881 /* Currently hif_power_up performs effectively a reset and hif_stop 2882 * resets the chip as well so there's no point in resetting here. 2883 */ 2884 } 2885 2886 static int ath10k_pci_hif_suspend(struct ath10k *ar) 2887 { 2888 /* Nothing to do; the important stuff is in the driver suspend. */ 2889 return 0; 2890 } 2891 2892 static int ath10k_pci_suspend(struct ath10k *ar) 2893 { 2894 /* The grace timer can still be counting down and ar->ps_awake be true. 2895 * It is known that the device may be asleep after resuming regardless 2896 * of the SoC powersave state before suspending. Hence make sure the 2897 * device is asleep before proceeding. 2898 */ 2899 ath10k_pci_sleep_sync(ar); 2900 2901 return 0; 2902 } 2903 2904 static int ath10k_pci_hif_resume(struct ath10k *ar) 2905 { 2906 /* Nothing to do; the important stuff is in the driver resume. */ 2907 return 0; 2908 } 2909 2910 static int ath10k_pci_resume(struct ath10k *ar) 2911 { 2912 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 2913 struct pci_dev *pdev = ar_pci->pdev; 2914 u32 val; 2915 int ret = 0; 2916 2917 ret = ath10k_pci_force_wake(ar); 2918 if (ret) { 2919 ath10k_err(ar, "failed to wake up target: %d\n", ret); 2920 return ret; 2921 } 2922 2923 /* Suspend/Resume resets the PCI configuration space, so we have to 2924 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries 2925 * from interfering with C3 CPU state. pci_restore_state won't help 2926 * here since it only restores the first 64 bytes pci config header. 2927 */ 2928 pci_read_config_dword(pdev, 0x40, &val); 2929 if ((val & 0x0000ff00) != 0) 2930 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); 2931 2932 return ret; 2933 } 2934 2935 static bool ath10k_pci_validate_cal(void *data, size_t size) 2936 { 2937 __le16 *cal_words = data; 2938 u16 checksum = 0; 2939 size_t i; 2940 2941 if (size % 2 != 0) 2942 return false; 2943 2944 for (i = 0; i < size / 2; i++) 2945 checksum ^= le16_to_cpu(cal_words[i]); 2946 2947 return checksum == 0xffff; 2948 } 2949 2950 static void ath10k_pci_enable_eeprom(struct ath10k *ar) 2951 { 2952 /* Enable SI clock */ 2953 ath10k_pci_soc_write32(ar, CLOCK_CONTROL_OFFSET, 0x0); 2954 2955 /* Configure GPIOs for I2C operation */ 2956 ath10k_pci_write32(ar, 2957 GPIO_BASE_ADDRESS + GPIO_PIN0_OFFSET + 2958 4 * QCA9887_1_0_I2C_SDA_GPIO_PIN, 2959 SM(QCA9887_1_0_I2C_SDA_PIN_CONFIG, 2960 GPIO_PIN0_CONFIG) | 2961 SM(1, GPIO_PIN0_PAD_PULL)); 2962 2963 ath10k_pci_write32(ar, 2964 GPIO_BASE_ADDRESS + GPIO_PIN0_OFFSET + 2965 4 * QCA9887_1_0_SI_CLK_GPIO_PIN, 2966 SM(QCA9887_1_0_SI_CLK_PIN_CONFIG, GPIO_PIN0_CONFIG) | 2967 SM(1, GPIO_PIN0_PAD_PULL)); 2968 2969 ath10k_pci_write32(ar, 2970 GPIO_BASE_ADDRESS + 2971 QCA9887_1_0_GPIO_ENABLE_W1TS_LOW_ADDRESS, 2972 1u << QCA9887_1_0_SI_CLK_GPIO_PIN); 2973 2974 /* In Swift ASIC - EEPROM clock will be (110MHz/512) = 214KHz */ 2975 ath10k_pci_write32(ar, 2976 SI_BASE_ADDRESS + SI_CONFIG_OFFSET, 2977 SM(1, SI_CONFIG_ERR_INT) | 2978 SM(1, SI_CONFIG_BIDIR_OD_DATA) | 2979 SM(1, SI_CONFIG_I2C) | 2980 SM(1, SI_CONFIG_POS_SAMPLE) | 2981 SM(1, SI_CONFIG_INACTIVE_DATA) | 2982 SM(1, SI_CONFIG_INACTIVE_CLK) | 2983 SM(8, SI_CONFIG_DIVIDER)); 2984 } 2985 2986 static int ath10k_pci_read_eeprom(struct ath10k *ar, u16 addr, u8 *out) 2987 { 2988 u32 reg; 2989 int wait_limit; 2990 2991 /* set device select byte and for the read operation */ 2992 reg = QCA9887_EEPROM_SELECT_READ | 2993 SM(addr, QCA9887_EEPROM_ADDR_LO) | 2994 SM(addr >> 8, QCA9887_EEPROM_ADDR_HI); 2995 ath10k_pci_write32(ar, SI_BASE_ADDRESS + SI_TX_DATA0_OFFSET, reg); 2996 2997 /* write transmit data, transfer length, and START bit */ 2998 ath10k_pci_write32(ar, SI_BASE_ADDRESS + SI_CS_OFFSET, 2999 SM(1, SI_CS_START) | SM(1, SI_CS_RX_CNT) | 3000 SM(4, SI_CS_TX_CNT)); 3001 3002 /* wait max 1 sec */ 3003 wait_limit = 100000; 3004 3005 /* wait for SI_CS_DONE_INT */ 3006 do { 3007 reg = ath10k_pci_read32(ar, SI_BASE_ADDRESS + SI_CS_OFFSET); 3008 if (MS(reg, SI_CS_DONE_INT)) 3009 break; 3010 3011 wait_limit--; 3012 udelay(10); 3013 } while (wait_limit > 0); 3014 3015 if (!MS(reg, SI_CS_DONE_INT)) { 3016 ath10k_err(ar, "timeout while reading device EEPROM at %04x\n", 3017 addr); 3018 return -ETIMEDOUT; 3019 } 3020 3021 /* clear SI_CS_DONE_INT */ 3022 ath10k_pci_write32(ar, SI_BASE_ADDRESS + SI_CS_OFFSET, reg); 3023 3024 if (MS(reg, SI_CS_DONE_ERR)) { 3025 ath10k_err(ar, "failed to read device EEPROM at %04x\n", addr); 3026 return -EIO; 3027 } 3028 3029 /* extract receive data */ 3030 reg = ath10k_pci_read32(ar, SI_BASE_ADDRESS + SI_RX_DATA0_OFFSET); 3031 *out = reg; 3032 3033 return 0; 3034 } 3035 3036 static int ath10k_pci_hif_fetch_cal_eeprom(struct ath10k *ar, void **data, 3037 size_t *data_len) 3038 { 3039 u8 *caldata = NULL; 3040 size_t calsize, i; 3041 int ret; 3042 3043 if (!QCA_REV_9887(ar)) 3044 return -EOPNOTSUPP; 3045 3046 calsize = ar->hw_params.cal_data_len; 3047 caldata = kmalloc(calsize, GFP_KERNEL); 3048 if (!caldata) 3049 return -ENOMEM; 3050 3051 ath10k_pci_enable_eeprom(ar); 3052 3053 for (i = 0; i < calsize; i++) { 3054 ret = ath10k_pci_read_eeprom(ar, i, &caldata[i]); 3055 if (ret) 3056 goto err_free; 3057 } 3058 3059 if (!ath10k_pci_validate_cal(caldata, calsize)) 3060 goto err_free; 3061 3062 *data = caldata; 3063 *data_len = calsize; 3064 3065 return 0; 3066 3067 err_free: 3068 kfree(caldata); 3069 3070 return -EINVAL; 3071 } 3072 3073 static const struct ath10k_hif_ops ath10k_pci_hif_ops = { 3074 .tx_sg = ath10k_pci_hif_tx_sg, 3075 .diag_read = ath10k_pci_hif_diag_read, 3076 .diag_write = ath10k_pci_diag_write_mem, 3077 .exchange_bmi_msg = ath10k_pci_hif_exchange_bmi_msg, 3078 .start = ath10k_pci_hif_start, 3079 .stop = ath10k_pci_hif_stop, 3080 .map_service_to_pipe = ath10k_pci_hif_map_service_to_pipe, 3081 .get_default_pipe = ath10k_pci_hif_get_default_pipe, 3082 .send_complete_check = ath10k_pci_hif_send_complete_check, 3083 .get_free_queue_number = ath10k_pci_hif_get_free_queue_number, 3084 .power_up = ath10k_pci_hif_power_up, 3085 .power_down = ath10k_pci_hif_power_down, 3086 .read32 = ath10k_pci_read32, 3087 .write32 = ath10k_pci_write32, 3088 .suspend = ath10k_pci_hif_suspend, 3089 .resume = ath10k_pci_hif_resume, 3090 .fetch_cal_eeprom = ath10k_pci_hif_fetch_cal_eeprom, 3091 }; 3092 3093 /* 3094 * Top-level interrupt handler for all PCI interrupts from a Target. 3095 * When a block of MSI interrupts is allocated, this top-level handler 3096 * is not used; instead, we directly call the correct sub-handler. 3097 */ 3098 static irqreturn_t ath10k_pci_interrupt_handler(int irq, void *arg) 3099 { 3100 struct ath10k *ar = arg; 3101 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 3102 int ret; 3103 3104 if (ath10k_pci_has_device_gone(ar)) 3105 return IRQ_NONE; 3106 3107 ret = ath10k_pci_force_wake(ar); 3108 if (ret) { 3109 ath10k_warn(ar, "failed to wake device up on irq: %d\n", ret); 3110 return IRQ_NONE; 3111 } 3112 3113 if ((ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_LEGACY) && 3114 !ath10k_pci_irq_pending(ar)) 3115 return IRQ_NONE; 3116 3117 ath10k_pci_disable_and_clear_legacy_irq(ar); 3118 ath10k_pci_irq_msi_fw_mask(ar); 3119 napi_schedule(&ar->napi); 3120 3121 return IRQ_HANDLED; 3122 } 3123 3124 static int ath10k_pci_napi_poll(struct napi_struct *ctx, int budget) 3125 { 3126 struct ath10k *ar = container_of(ctx, struct ath10k, napi); 3127 int done = 0; 3128 3129 if (ath10k_pci_has_fw_crashed(ar)) { 3130 ath10k_pci_fw_crashed_clear(ar); 3131 ath10k_pci_fw_crashed_dump(ar); 3132 napi_complete(ctx); 3133 return done; 3134 } 3135 3136 ath10k_ce_per_engine_service_any(ar); 3137 3138 done = ath10k_htt_txrx_compl_task(ar, budget); 3139 3140 if (done < budget) { 3141 napi_complete_done(ctx, done); 3142 /* In case of MSI, it is possible that interrupts are received 3143 * while NAPI poll is inprogress. So pending interrupts that are 3144 * received after processing all copy engine pipes by NAPI poll 3145 * will not be handled again. This is causing failure to 3146 * complete boot sequence in x86 platform. So before enabling 3147 * interrupts safer to check for pending interrupts for 3148 * immediate servicing. 3149 */ 3150 if (ath10k_ce_interrupt_summary(ar)) { 3151 napi_schedule(ctx); 3152 goto out; 3153 } 3154 ath10k_pci_enable_legacy_irq(ar); 3155 ath10k_pci_irq_msi_fw_unmask(ar); 3156 } 3157 3158 out: 3159 return done; 3160 } 3161 3162 static int ath10k_pci_request_irq_msi(struct ath10k *ar) 3163 { 3164 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 3165 int ret; 3166 3167 ret = request_irq(ar_pci->pdev->irq, 3168 ath10k_pci_interrupt_handler, 3169 IRQF_SHARED, "ath10k_pci", ar); 3170 if (ret) { 3171 ath10k_warn(ar, "failed to request MSI irq %d: %d\n", 3172 ar_pci->pdev->irq, ret); 3173 return ret; 3174 } 3175 3176 return 0; 3177 } 3178 3179 static int ath10k_pci_request_irq_legacy(struct ath10k *ar) 3180 { 3181 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 3182 int ret; 3183 3184 ret = request_irq(ar_pci->pdev->irq, 3185 ath10k_pci_interrupt_handler, 3186 IRQF_SHARED, "ath10k_pci", ar); 3187 if (ret) { 3188 ath10k_warn(ar, "failed to request legacy irq %d: %d\n", 3189 ar_pci->pdev->irq, ret); 3190 return ret; 3191 } 3192 3193 return 0; 3194 } 3195 3196 static int ath10k_pci_request_irq(struct ath10k *ar) 3197 { 3198 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 3199 3200 switch (ar_pci->oper_irq_mode) { 3201 case ATH10K_PCI_IRQ_LEGACY: 3202 return ath10k_pci_request_irq_legacy(ar); 3203 case ATH10K_PCI_IRQ_MSI: 3204 return ath10k_pci_request_irq_msi(ar); 3205 default: 3206 return -EINVAL; 3207 } 3208 } 3209 3210 static void ath10k_pci_free_irq(struct ath10k *ar) 3211 { 3212 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 3213 3214 free_irq(ar_pci->pdev->irq, ar); 3215 } 3216 3217 void ath10k_pci_init_napi(struct ath10k *ar) 3218 { 3219 netif_napi_add(&ar->napi_dev, &ar->napi, ath10k_pci_napi_poll); 3220 } 3221 3222 static int ath10k_pci_init_irq(struct ath10k *ar) 3223 { 3224 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 3225 int ret; 3226 3227 ath10k_pci_init_napi(ar); 3228 3229 if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_AUTO) 3230 ath10k_info(ar, "limiting irq mode to: %d\n", 3231 ath10k_pci_irq_mode); 3232 3233 /* Try MSI */ 3234 if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_LEGACY) { 3235 ar_pci->oper_irq_mode = ATH10K_PCI_IRQ_MSI; 3236 ret = pci_enable_msi(ar_pci->pdev); 3237 if (ret == 0) 3238 return 0; 3239 3240 /* MHI failed, try legacy irq next */ 3241 } 3242 3243 /* Try legacy irq 3244 * 3245 * A potential race occurs here: The CORE_BASE write 3246 * depends on target correctly decoding AXI address but 3247 * host won't know when target writes BAR to CORE_CTRL. 3248 * This write might get lost if target has NOT written BAR. 3249 * For now, fix the race by repeating the write in below 3250 * synchronization checking. 3251 */ 3252 ar_pci->oper_irq_mode = ATH10K_PCI_IRQ_LEGACY; 3253 3254 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS, 3255 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL); 3256 3257 return 0; 3258 } 3259 3260 static void ath10k_pci_deinit_irq_legacy(struct ath10k *ar) 3261 { 3262 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS, 3263 0); 3264 } 3265 3266 static int ath10k_pci_deinit_irq(struct ath10k *ar) 3267 { 3268 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 3269 3270 switch (ar_pci->oper_irq_mode) { 3271 case ATH10K_PCI_IRQ_LEGACY: 3272 ath10k_pci_deinit_irq_legacy(ar); 3273 break; 3274 default: 3275 pci_disable_msi(ar_pci->pdev); 3276 break; 3277 } 3278 3279 return 0; 3280 } 3281 3282 int ath10k_pci_wait_for_target_init(struct ath10k *ar) 3283 { 3284 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 3285 unsigned long timeout; 3286 u32 val; 3287 3288 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot waiting target to initialise\n"); 3289 3290 timeout = jiffies + msecs_to_jiffies(ATH10K_PCI_TARGET_WAIT); 3291 3292 do { 3293 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS); 3294 3295 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot target indicator %x\n", 3296 val); 3297 3298 /* target should never return this */ 3299 if (val == 0xffffffff) 3300 continue; 3301 3302 /* the device has crashed so don't bother trying anymore */ 3303 if (val & FW_IND_EVENT_PENDING) 3304 break; 3305 3306 if (val & FW_IND_INITIALIZED) 3307 break; 3308 3309 if (ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_LEGACY) 3310 /* Fix potential race by repeating CORE_BASE writes */ 3311 ath10k_pci_enable_legacy_irq(ar); 3312 3313 mdelay(10); 3314 } while (time_before(jiffies, timeout)); 3315 3316 ath10k_pci_disable_and_clear_legacy_irq(ar); 3317 ath10k_pci_irq_msi_fw_mask(ar); 3318 3319 if (val == 0xffffffff) { 3320 ath10k_err(ar, "failed to read device register, device is gone\n"); 3321 return -EIO; 3322 } 3323 3324 if (val & FW_IND_EVENT_PENDING) { 3325 ath10k_warn(ar, "device has crashed during init\n"); 3326 return -ECOMM; 3327 } 3328 3329 if (!(val & FW_IND_INITIALIZED)) { 3330 ath10k_err(ar, "failed to receive initialized event from target: %08x\n", 3331 val); 3332 return -ETIMEDOUT; 3333 } 3334 3335 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot target initialised\n"); 3336 return 0; 3337 } 3338 3339 static int ath10k_pci_cold_reset(struct ath10k *ar) 3340 { 3341 u32 val; 3342 3343 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cold reset\n"); 3344 3345 spin_lock_bh(&ar->data_lock); 3346 3347 ar->stats.fw_cold_reset_counter++; 3348 3349 spin_unlock_bh(&ar->data_lock); 3350 3351 /* Put Target, including PCIe, into RESET. */ 3352 val = ath10k_pci_reg_read32(ar, SOC_GLOBAL_RESET_ADDRESS); 3353 val |= 1; 3354 ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val); 3355 3356 /* After writing into SOC_GLOBAL_RESET to put device into 3357 * reset and pulling out of reset pcie may not be stable 3358 * for any immediate pcie register access and cause bus error, 3359 * add delay before any pcie access request to fix this issue. 3360 */ 3361 msleep(20); 3362 3363 /* Pull Target, including PCIe, out of RESET. */ 3364 val &= ~1; 3365 ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val); 3366 3367 msleep(20); 3368 3369 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cold reset complete\n"); 3370 3371 return 0; 3372 } 3373 3374 static int ath10k_pci_claim(struct ath10k *ar) 3375 { 3376 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 3377 struct pci_dev *pdev = ar_pci->pdev; 3378 int ret; 3379 3380 pci_set_drvdata(pdev, ar); 3381 3382 ret = pci_enable_device(pdev); 3383 if (ret) { 3384 ath10k_err(ar, "failed to enable pci device: %d\n", ret); 3385 return ret; 3386 } 3387 3388 ret = pci_request_region(pdev, BAR_NUM, "ath"); 3389 if (ret) { 3390 ath10k_err(ar, "failed to request region BAR%d: %d\n", BAR_NUM, 3391 ret); 3392 goto err_device; 3393 } 3394 3395 /* Target expects 32 bit DMA. Enforce it. */ 3396 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 3397 if (ret) { 3398 ath10k_err(ar, "failed to set dma mask to 32-bit: %d\n", ret); 3399 goto err_region; 3400 } 3401 3402 pci_set_master(pdev); 3403 3404 /* Arrange for access to Target SoC registers. */ 3405 ar_pci->mem_len = pci_resource_len(pdev, BAR_NUM); 3406 ar_pci->mem = pci_iomap(pdev, BAR_NUM, 0); 3407 if (!ar_pci->mem) { 3408 ath10k_err(ar, "failed to iomap BAR%d\n", BAR_NUM); 3409 ret = -EIO; 3410 goto err_region; 3411 } 3412 3413 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot pci_mem 0x%pK\n", ar_pci->mem); 3414 return 0; 3415 3416 err_region: 3417 pci_release_region(pdev, BAR_NUM); 3418 3419 err_device: 3420 pci_disable_device(pdev); 3421 3422 return ret; 3423 } 3424 3425 static void ath10k_pci_release(struct ath10k *ar) 3426 { 3427 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 3428 struct pci_dev *pdev = ar_pci->pdev; 3429 3430 pci_iounmap(pdev, ar_pci->mem); 3431 pci_release_region(pdev, BAR_NUM); 3432 pci_disable_device(pdev); 3433 } 3434 3435 static bool ath10k_pci_chip_is_supported(u32 dev_id, u32 chip_id) 3436 { 3437 const struct ath10k_pci_supp_chip *supp_chip; 3438 int i; 3439 u32 rev_id = MS(chip_id, SOC_CHIP_ID_REV); 3440 3441 for (i = 0; i < ARRAY_SIZE(ath10k_pci_supp_chips); i++) { 3442 supp_chip = &ath10k_pci_supp_chips[i]; 3443 3444 if (supp_chip->dev_id == dev_id && 3445 supp_chip->rev_id == rev_id) 3446 return true; 3447 } 3448 3449 return false; 3450 } 3451 3452 int ath10k_pci_setup_resource(struct ath10k *ar) 3453 { 3454 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 3455 struct ath10k_ce *ce = ath10k_ce_priv(ar); 3456 int ret; 3457 3458 spin_lock_init(&ce->ce_lock); 3459 spin_lock_init(&ar_pci->ps_lock); 3460 mutex_init(&ar_pci->ce_diag_mutex); 3461 3462 INIT_WORK(&ar_pci->dump_work, ath10k_pci_fw_dump_work); 3463 3464 timer_setup(&ar_pci->rx_post_retry, ath10k_pci_rx_replenish_retry, 0); 3465 3466 ar_pci->attr = kmemdup(pci_host_ce_config_wlan, 3467 sizeof(pci_host_ce_config_wlan), 3468 GFP_KERNEL); 3469 if (!ar_pci->attr) 3470 return -ENOMEM; 3471 3472 ar_pci->pipe_config = kmemdup(pci_target_ce_config_wlan, 3473 sizeof(pci_target_ce_config_wlan), 3474 GFP_KERNEL); 3475 if (!ar_pci->pipe_config) { 3476 ret = -ENOMEM; 3477 goto err_free_attr; 3478 } 3479 3480 ar_pci->serv_to_pipe = kmemdup(pci_target_service_to_ce_map_wlan, 3481 sizeof(pci_target_service_to_ce_map_wlan), 3482 GFP_KERNEL); 3483 if (!ar_pci->serv_to_pipe) { 3484 ret = -ENOMEM; 3485 goto err_free_pipe_config; 3486 } 3487 3488 if (QCA_REV_6174(ar) || QCA_REV_9377(ar)) 3489 ath10k_pci_override_ce_config(ar); 3490 3491 ret = ath10k_pci_alloc_pipes(ar); 3492 if (ret) { 3493 ath10k_err(ar, "failed to allocate copy engine pipes: %d\n", 3494 ret); 3495 goto err_free_serv_to_pipe; 3496 } 3497 3498 return 0; 3499 3500 err_free_serv_to_pipe: 3501 kfree(ar_pci->serv_to_pipe); 3502 err_free_pipe_config: 3503 kfree(ar_pci->pipe_config); 3504 err_free_attr: 3505 kfree(ar_pci->attr); 3506 return ret; 3507 } 3508 3509 void ath10k_pci_release_resource(struct ath10k *ar) 3510 { 3511 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); 3512 3513 ath10k_pci_rx_retry_sync(ar); 3514 netif_napi_del(&ar->napi); 3515 ath10k_pci_ce_deinit(ar); 3516 ath10k_pci_free_pipes(ar); 3517 kfree(ar_pci->attr); 3518 kfree(ar_pci->pipe_config); 3519 kfree(ar_pci->serv_to_pipe); 3520 } 3521 3522 static const struct ath10k_bus_ops ath10k_pci_bus_ops = { 3523 .read32 = ath10k_bus_pci_read32, 3524 .write32 = ath10k_bus_pci_write32, 3525 .get_num_banks = ath10k_pci_get_num_banks, 3526 }; 3527 3528 static int ath10k_pci_probe(struct pci_dev *pdev, 3529 const struct pci_device_id *pci_dev) 3530 { 3531 int ret = 0; 3532 struct ath10k *ar; 3533 struct ath10k_pci *ar_pci; 3534 enum ath10k_hw_rev hw_rev; 3535 struct ath10k_bus_params bus_params = {}; 3536 bool pci_ps, is_qca988x = false; 3537 int (*pci_soft_reset)(struct ath10k *ar); 3538 int (*pci_hard_reset)(struct ath10k *ar); 3539 u32 (*targ_cpu_to_ce_addr)(struct ath10k *ar, u32 addr); 3540 3541 switch (pci_dev->device) { 3542 case QCA988X_2_0_DEVICE_ID_UBNT: 3543 case QCA988X_2_0_DEVICE_ID: 3544 hw_rev = ATH10K_HW_QCA988X; 3545 pci_ps = false; 3546 is_qca988x = true; 3547 pci_soft_reset = ath10k_pci_warm_reset; 3548 pci_hard_reset = ath10k_pci_qca988x_chip_reset; 3549 targ_cpu_to_ce_addr = ath10k_pci_qca988x_targ_cpu_to_ce_addr; 3550 break; 3551 case QCA9887_1_0_DEVICE_ID: 3552 hw_rev = ATH10K_HW_QCA9887; 3553 pci_ps = false; 3554 pci_soft_reset = ath10k_pci_warm_reset; 3555 pci_hard_reset = ath10k_pci_qca988x_chip_reset; 3556 targ_cpu_to_ce_addr = ath10k_pci_qca988x_targ_cpu_to_ce_addr; 3557 break; 3558 case QCA6164_2_1_DEVICE_ID: 3559 case QCA6174_2_1_DEVICE_ID: 3560 hw_rev = ATH10K_HW_QCA6174; 3561 pci_ps = true; 3562 pci_soft_reset = ath10k_pci_warm_reset; 3563 pci_hard_reset = ath10k_pci_qca6174_chip_reset; 3564 targ_cpu_to_ce_addr = ath10k_pci_qca6174_targ_cpu_to_ce_addr; 3565 break; 3566 case QCA99X0_2_0_DEVICE_ID: 3567 hw_rev = ATH10K_HW_QCA99X0; 3568 pci_ps = false; 3569 pci_soft_reset = ath10k_pci_qca99x0_soft_chip_reset; 3570 pci_hard_reset = ath10k_pci_qca99x0_chip_reset; 3571 targ_cpu_to_ce_addr = ath10k_pci_qca99x0_targ_cpu_to_ce_addr; 3572 break; 3573 case QCA9984_1_0_DEVICE_ID: 3574 hw_rev = ATH10K_HW_QCA9984; 3575 pci_ps = false; 3576 pci_soft_reset = ath10k_pci_qca99x0_soft_chip_reset; 3577 pci_hard_reset = ath10k_pci_qca99x0_chip_reset; 3578 targ_cpu_to_ce_addr = ath10k_pci_qca99x0_targ_cpu_to_ce_addr; 3579 break; 3580 case QCA9888_2_0_DEVICE_ID: 3581 hw_rev = ATH10K_HW_QCA9888; 3582 pci_ps = false; 3583 pci_soft_reset = ath10k_pci_qca99x0_soft_chip_reset; 3584 pci_hard_reset = ath10k_pci_qca99x0_chip_reset; 3585 targ_cpu_to_ce_addr = ath10k_pci_qca99x0_targ_cpu_to_ce_addr; 3586 break; 3587 case QCA9377_1_0_DEVICE_ID: 3588 hw_rev = ATH10K_HW_QCA9377; 3589 pci_ps = true; 3590 pci_soft_reset = ath10k_pci_warm_reset; 3591 pci_hard_reset = ath10k_pci_qca6174_chip_reset; 3592 targ_cpu_to_ce_addr = ath10k_pci_qca6174_targ_cpu_to_ce_addr; 3593 break; 3594 default: 3595 WARN_ON(1); 3596 return -ENOTSUPP; 3597 } 3598 3599 ar = ath10k_core_create(sizeof(*ar_pci), &pdev->dev, ATH10K_BUS_PCI, 3600 hw_rev, &ath10k_pci_hif_ops); 3601 if (!ar) { 3602 dev_err(&pdev->dev, "failed to allocate core\n"); 3603 return -ENOMEM; 3604 } 3605 3606 ath10k_dbg(ar, ATH10K_DBG_BOOT, "pci probe %04x:%04x %04x:%04x\n", 3607 pdev->vendor, pdev->device, 3608 pdev->subsystem_vendor, pdev->subsystem_device); 3609 3610 ar_pci = ath10k_pci_priv(ar); 3611 ar_pci->pdev = pdev; 3612 ar_pci->dev = &pdev->dev; 3613 ar_pci->ar = ar; 3614 ar->dev_id = pci_dev->device; 3615 ar_pci->pci_ps = pci_ps; 3616 ar_pci->ce.bus_ops = &ath10k_pci_bus_ops; 3617 ar_pci->pci_soft_reset = pci_soft_reset; 3618 ar_pci->pci_hard_reset = pci_hard_reset; 3619 ar_pci->targ_cpu_to_ce_addr = targ_cpu_to_ce_addr; 3620 ar->ce_priv = &ar_pci->ce; 3621 3622 ar->id.vendor = pdev->vendor; 3623 ar->id.device = pdev->device; 3624 ar->id.subsystem_vendor = pdev->subsystem_vendor; 3625 ar->id.subsystem_device = pdev->subsystem_device; 3626 3627 timer_setup(&ar_pci->ps_timer, ath10k_pci_ps_timer, 0); 3628 3629 ret = ath10k_pci_setup_resource(ar); 3630 if (ret) { 3631 ath10k_err(ar, "failed to setup resource: %d\n", ret); 3632 goto err_core_destroy; 3633 } 3634 3635 ret = ath10k_pci_claim(ar); 3636 if (ret) { 3637 ath10k_err(ar, "failed to claim device: %d\n", ret); 3638 goto err_free_pipes; 3639 } 3640 3641 ret = ath10k_pci_force_wake(ar); 3642 if (ret) { 3643 ath10k_warn(ar, "failed to wake up device : %d\n", ret); 3644 goto err_sleep; 3645 } 3646 3647 ath10k_pci_ce_deinit(ar); 3648 ath10k_pci_irq_disable(ar); 3649 3650 ret = ath10k_pci_init_irq(ar); 3651 if (ret) { 3652 ath10k_err(ar, "failed to init irqs: %d\n", ret); 3653 goto err_sleep; 3654 } 3655 3656 ath10k_info(ar, "pci irq %s oper_irq_mode %d irq_mode %d reset_mode %d\n", 3657 ath10k_pci_get_irq_method(ar), ar_pci->oper_irq_mode, 3658 ath10k_pci_irq_mode, ath10k_pci_reset_mode); 3659 3660 ret = ath10k_pci_request_irq(ar); 3661 if (ret) { 3662 ath10k_warn(ar, "failed to request irqs: %d\n", ret); 3663 goto err_deinit_irq; 3664 } 3665 3666 bus_params.dev_type = ATH10K_DEV_TYPE_LL; 3667 bus_params.link_can_suspend = true; 3668 /* Read CHIP_ID before reset to catch QCA9880-AR1A v1 devices that 3669 * fall off the bus during chip_reset. These chips have the same pci 3670 * device id as the QCA9880 BR4A or 2R4E. So that's why the check. 3671 */ 3672 if (is_qca988x) { 3673 bus_params.chip_id = 3674 ath10k_pci_soc_read32(ar, SOC_CHIP_ID_ADDRESS); 3675 if (bus_params.chip_id != 0xffffffff) { 3676 if (!ath10k_pci_chip_is_supported(pdev->device, 3677 bus_params.chip_id)) { 3678 ret = -ENODEV; 3679 goto err_unsupported; 3680 } 3681 } 3682 } 3683 3684 ret = ath10k_pci_chip_reset(ar); 3685 if (ret) { 3686 ath10k_err(ar, "failed to reset chip: %d\n", ret); 3687 goto err_free_irq; 3688 } 3689 3690 bus_params.chip_id = ath10k_pci_soc_read32(ar, SOC_CHIP_ID_ADDRESS); 3691 if (bus_params.chip_id == 0xffffffff) { 3692 ret = -ENODEV; 3693 goto err_unsupported; 3694 } 3695 3696 if (!ath10k_pci_chip_is_supported(pdev->device, bus_params.chip_id)) { 3697 ret = -ENODEV; 3698 goto err_unsupported; 3699 } 3700 3701 ret = ath10k_core_register(ar, &bus_params); 3702 if (ret) { 3703 ath10k_err(ar, "failed to register driver core: %d\n", ret); 3704 goto err_free_irq; 3705 } 3706 3707 return 0; 3708 3709 err_unsupported: 3710 ath10k_err(ar, "device %04x with chip_id %08x isn't supported\n", 3711 pdev->device, bus_params.chip_id); 3712 3713 err_free_irq: 3714 ath10k_pci_free_irq(ar); 3715 3716 err_deinit_irq: 3717 ath10k_pci_release_resource(ar); 3718 3719 err_sleep: 3720 ath10k_pci_sleep_sync(ar); 3721 ath10k_pci_release(ar); 3722 3723 err_free_pipes: 3724 ath10k_pci_free_pipes(ar); 3725 3726 err_core_destroy: 3727 ath10k_core_destroy(ar); 3728 3729 return ret; 3730 } 3731 3732 static void ath10k_pci_remove(struct pci_dev *pdev) 3733 { 3734 struct ath10k *ar = pci_get_drvdata(pdev); 3735 3736 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci remove\n"); 3737 3738 if (!ar) 3739 return; 3740 3741 ath10k_core_unregister(ar); 3742 ath10k_pci_free_irq(ar); 3743 ath10k_pci_deinit_irq(ar); 3744 ath10k_pci_release_resource(ar); 3745 ath10k_pci_sleep_sync(ar); 3746 ath10k_pci_release(ar); 3747 ath10k_core_destroy(ar); 3748 } 3749 3750 MODULE_DEVICE_TABLE(pci, ath10k_pci_id_table); 3751 3752 static __maybe_unused int ath10k_pci_pm_suspend(struct device *dev) 3753 { 3754 struct ath10k *ar = dev_get_drvdata(dev); 3755 int ret; 3756 3757 ret = ath10k_pci_suspend(ar); 3758 if (ret) 3759 ath10k_warn(ar, "failed to suspend hif: %d\n", ret); 3760 3761 return ret; 3762 } 3763 3764 static __maybe_unused int ath10k_pci_pm_resume(struct device *dev) 3765 { 3766 struct ath10k *ar = dev_get_drvdata(dev); 3767 int ret; 3768 3769 ret = ath10k_pci_resume(ar); 3770 if (ret) 3771 ath10k_warn(ar, "failed to resume hif: %d\n", ret); 3772 3773 return ret; 3774 } 3775 3776 static SIMPLE_DEV_PM_OPS(ath10k_pci_pm_ops, 3777 ath10k_pci_pm_suspend, 3778 ath10k_pci_pm_resume); 3779 3780 static struct pci_driver ath10k_pci_driver = { 3781 .name = "ath10k_pci", 3782 .id_table = ath10k_pci_id_table, 3783 .probe = ath10k_pci_probe, 3784 .remove = ath10k_pci_remove, 3785 #ifdef CONFIG_PM 3786 .driver.pm = &ath10k_pci_pm_ops, 3787 #endif 3788 }; 3789 3790 static int __init ath10k_pci_init(void) 3791 { 3792 int ret1, ret2; 3793 3794 ret1 = pci_register_driver(&ath10k_pci_driver); 3795 if (ret1) 3796 printk(KERN_ERR "failed to register ath10k pci driver: %d\n", 3797 ret1); 3798 3799 ret2 = ath10k_ahb_init(); 3800 if (ret2) 3801 printk(KERN_ERR "ahb init failed: %d\n", ret2); 3802 3803 if (ret1 && ret2) 3804 return ret1; 3805 3806 /* registered to at least one bus */ 3807 return 0; 3808 } 3809 module_init(ath10k_pci_init); 3810 3811 static void __exit ath10k_pci_exit(void) 3812 { 3813 pci_unregister_driver(&ath10k_pci_driver); 3814 ath10k_ahb_exit(); 3815 } 3816 3817 module_exit(ath10k_pci_exit); 3818 3819 MODULE_AUTHOR("Qualcomm Atheros"); 3820 MODULE_DESCRIPTION("Driver support for Qualcomm Atheros PCIe/AHB 802.11ac WLAN devices"); 3821 MODULE_LICENSE("Dual BSD/GPL"); 3822 3823 /* QCA988x 2.0 firmware files */ 3824 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API2_FILE); 3825 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API3_FILE); 3826 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API4_FILE); 3827 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API5_FILE); 3828 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" QCA988X_HW_2_0_BOARD_DATA_FILE); 3829 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_BOARD_API2_FILE); 3830 3831 /* QCA9887 1.0 firmware files */ 3832 MODULE_FIRMWARE(QCA9887_HW_1_0_FW_DIR "/" ATH10K_FW_API5_FILE); 3833 MODULE_FIRMWARE(QCA9887_HW_1_0_FW_DIR "/" QCA9887_HW_1_0_BOARD_DATA_FILE); 3834 MODULE_FIRMWARE(QCA9887_HW_1_0_FW_DIR "/" ATH10K_BOARD_API2_FILE); 3835 3836 /* QCA6174 2.1 firmware files */ 3837 MODULE_FIRMWARE(QCA6174_HW_2_1_FW_DIR "/" ATH10K_FW_API4_FILE); 3838 MODULE_FIRMWARE(QCA6174_HW_2_1_FW_DIR "/" ATH10K_FW_API5_FILE); 3839 MODULE_FIRMWARE(QCA6174_HW_2_1_FW_DIR "/" QCA6174_HW_2_1_BOARD_DATA_FILE); 3840 MODULE_FIRMWARE(QCA6174_HW_2_1_FW_DIR "/" ATH10K_BOARD_API2_FILE); 3841 3842 /* QCA6174 3.1 firmware files */ 3843 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" ATH10K_FW_API4_FILE); 3844 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" ATH10K_FW_API5_FILE); 3845 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" ATH10K_FW_API6_FILE); 3846 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" QCA6174_HW_3_0_BOARD_DATA_FILE); 3847 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" ATH10K_BOARD_API2_FILE); 3848 3849 /* QCA9377 1.0 firmware files */ 3850 MODULE_FIRMWARE(QCA9377_HW_1_0_FW_DIR "/" ATH10K_FW_API6_FILE); 3851 MODULE_FIRMWARE(QCA9377_HW_1_0_FW_DIR "/" ATH10K_FW_API5_FILE); 3852 MODULE_FIRMWARE(QCA9377_HW_1_0_FW_DIR "/" QCA9377_HW_1_0_BOARD_DATA_FILE); 3853