2 * Copyright (c) 2005-2011 Atheros Communications Inc.
3 * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #include <linux/pci.h>
19 #include <linux/module.h>
20 #include <linux/interrupt.h>
21 #include <linux/spinlock.h>
22 #include <linux/bitops.h>
27 #include "targaddrs.h"
36 enum ath10k_pci_irq_mode {
37 ATH10K_PCI_IRQ_AUTO = 0,
38 ATH10K_PCI_IRQ_LEGACY = 1,
39 ATH10K_PCI_IRQ_MSI = 2,
42 enum ath10k_pci_reset_mode {
43 ATH10K_PCI_RESET_AUTO = 0,
44 ATH10K_PCI_RESET_WARM_ONLY = 1,
47 static unsigned int ath10k_pci_irq_mode = ATH10K_PCI_IRQ_AUTO;
48 static unsigned int ath10k_pci_reset_mode = ATH10K_PCI_RESET_AUTO;
50 module_param_named(irq_mode, ath10k_pci_irq_mode, uint, 0644);
51 MODULE_PARM_DESC(irq_mode, "0: auto, 1: legacy, 2: msi (default: 0)");
53 module_param_named(reset_mode, ath10k_pci_reset_mode, uint, 0644);
54 MODULE_PARM_DESC(reset_mode, "0: auto, 1: warm only (default: 0)");
56 /* how long wait to wait for target to initialise, in ms */
57 #define ATH10K_PCI_TARGET_WAIT 3000
58 #define ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS 3
60 static const struct pci_device_id ath10k_pci_id_table[] = {
61 { PCI_VDEVICE(ATHEROS, QCA988X_2_0_DEVICE_ID) }, /* PCI-E QCA988X V2 */
62 { PCI_VDEVICE(ATHEROS, QCA6164_2_1_DEVICE_ID) }, /* PCI-E QCA6164 V2.1 */
63 { PCI_VDEVICE(ATHEROS, QCA6174_2_1_DEVICE_ID) }, /* PCI-E QCA6174 V2.1 */
64 { PCI_VDEVICE(ATHEROS, QCA99X0_2_0_DEVICE_ID) }, /* PCI-E QCA99X0 V2 */
65 { PCI_VDEVICE(ATHEROS, QCA9377_1_0_DEVICE_ID) }, /* PCI-E QCA9377 V1 */
69 static const struct ath10k_pci_supp_chip ath10k_pci_supp_chips[] = {
70 /* QCA988X pre 2.0 chips are not supported because they need some nasty
71 * hacks. ath10k doesn't have them and these devices crash horribly
74 { QCA988X_2_0_DEVICE_ID, QCA988X_HW_2_0_CHIP_ID_REV },
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 },
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 },
88 { QCA99X0_2_0_DEVICE_ID, QCA99X0_HW_2_0_CHIP_ID_REV },
90 { QCA9377_1_0_DEVICE_ID, QCA9377_HW_1_0_CHIP_ID_REV },
91 { QCA9377_1_0_DEVICE_ID, QCA9377_HW_1_1_CHIP_ID_REV },
94 static void ath10k_pci_buffer_cleanup(struct ath10k *ar);
95 static int ath10k_pci_cold_reset(struct ath10k *ar);
96 static int ath10k_pci_safe_chip_reset(struct ath10k *ar);
97 static int ath10k_pci_init_irq(struct ath10k *ar);
98 static int ath10k_pci_deinit_irq(struct ath10k *ar);
99 static int ath10k_pci_request_irq(struct ath10k *ar);
100 static void ath10k_pci_free_irq(struct ath10k *ar);
101 static int ath10k_pci_bmi_wait(struct ath10k_ce_pipe *tx_pipe,
102 struct ath10k_ce_pipe *rx_pipe,
103 struct bmi_xfer *xfer);
104 static int ath10k_pci_qca99x0_chip_reset(struct ath10k *ar);
105 static void ath10k_pci_htc_tx_cb(struct ath10k_ce_pipe *ce_state);
106 static void ath10k_pci_htc_rx_cb(struct ath10k_ce_pipe *ce_state);
107 static void ath10k_pci_htt_tx_cb(struct ath10k_ce_pipe *ce_state);
108 static void ath10k_pci_htt_rx_cb(struct ath10k_ce_pipe *ce_state);
109 static void ath10k_pci_htt_htc_rx_cb(struct ath10k_ce_pipe *ce_state);
110 static void ath10k_pci_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state);
112 static struct ce_attr host_ce_config_wlan[] = {
113 /* CE0: host->target HTC control and raw streams */
115 .flags = CE_ATTR_FLAGS,
119 .send_cb = ath10k_pci_htc_tx_cb,
122 /* CE1: target->host HTT + HTC control */
124 .flags = CE_ATTR_FLAGS,
127 .dest_nentries = 512,
128 .recv_cb = ath10k_pci_htt_htc_rx_cb,
131 /* CE2: target->host WMI */
133 .flags = CE_ATTR_FLAGS,
136 .dest_nentries = 128,
137 .recv_cb = ath10k_pci_htc_rx_cb,
140 /* CE3: host->target WMI */
142 .flags = CE_ATTR_FLAGS,
146 .send_cb = ath10k_pci_htc_tx_cb,
149 /* CE4: host->target HTT */
151 .flags = CE_ATTR_FLAGS | CE_ATTR_DIS_INTR,
152 .src_nentries = CE_HTT_H2T_MSG_SRC_NENTRIES,
155 .send_cb = ath10k_pci_htt_tx_cb,
158 /* CE5: target->host HTT (HIF->HTT) */
160 .flags = CE_ATTR_FLAGS,
163 .dest_nentries = 512,
164 .recv_cb = ath10k_pci_htt_rx_cb,
167 /* CE6: target autonomous hif_memcpy */
169 .flags = CE_ATTR_FLAGS,
175 /* CE7: ce_diag, the Diagnostic Window */
177 .flags = CE_ATTR_FLAGS,
179 .src_sz_max = DIAG_TRANSFER_LIMIT,
183 /* CE8: target->host pktlog */
185 .flags = CE_ATTR_FLAGS,
188 .dest_nentries = 128,
189 .recv_cb = ath10k_pci_pktlog_rx_cb,
192 /* CE9 target autonomous qcache memcpy */
194 .flags = CE_ATTR_FLAGS,
200 /* CE10: target autonomous hif memcpy */
202 .flags = CE_ATTR_FLAGS,
208 /* CE11: target autonomous hif memcpy */
210 .flags = CE_ATTR_FLAGS,
217 /* Target firmware's Copy Engine configuration. */
218 static struct ce_pipe_config target_ce_config_wlan[] = {
219 /* CE0: host->target HTC control and raw streams */
221 .pipenum = __cpu_to_le32(0),
222 .pipedir = __cpu_to_le32(PIPEDIR_OUT),
223 .nentries = __cpu_to_le32(32),
224 .nbytes_max = __cpu_to_le32(256),
225 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
226 .reserved = __cpu_to_le32(0),
229 /* CE1: target->host HTT + HTC control */
231 .pipenum = __cpu_to_le32(1),
232 .pipedir = __cpu_to_le32(PIPEDIR_IN),
233 .nentries = __cpu_to_le32(32),
234 .nbytes_max = __cpu_to_le32(2048),
235 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
236 .reserved = __cpu_to_le32(0),
239 /* CE2: target->host WMI */
241 .pipenum = __cpu_to_le32(2),
242 .pipedir = __cpu_to_le32(PIPEDIR_IN),
243 .nentries = __cpu_to_le32(64),
244 .nbytes_max = __cpu_to_le32(2048),
245 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
246 .reserved = __cpu_to_le32(0),
249 /* CE3: host->target WMI */
251 .pipenum = __cpu_to_le32(3),
252 .pipedir = __cpu_to_le32(PIPEDIR_OUT),
253 .nentries = __cpu_to_le32(32),
254 .nbytes_max = __cpu_to_le32(2048),
255 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
256 .reserved = __cpu_to_le32(0),
259 /* CE4: host->target HTT */
261 .pipenum = __cpu_to_le32(4),
262 .pipedir = __cpu_to_le32(PIPEDIR_OUT),
263 .nentries = __cpu_to_le32(256),
264 .nbytes_max = __cpu_to_le32(256),
265 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
266 .reserved = __cpu_to_le32(0),
269 /* NB: 50% of src nentries, since tx has 2 frags */
271 /* CE5: target->host HTT (HIF->HTT) */
273 .pipenum = __cpu_to_le32(5),
274 .pipedir = __cpu_to_le32(PIPEDIR_IN),
275 .nentries = __cpu_to_le32(32),
276 .nbytes_max = __cpu_to_le32(512),
277 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
278 .reserved = __cpu_to_le32(0),
281 /* CE6: Reserved for target autonomous hif_memcpy */
283 .pipenum = __cpu_to_le32(6),
284 .pipedir = __cpu_to_le32(PIPEDIR_INOUT),
285 .nentries = __cpu_to_le32(32),
286 .nbytes_max = __cpu_to_le32(4096),
287 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
288 .reserved = __cpu_to_le32(0),
291 /* CE7 used only by Host */
293 .pipenum = __cpu_to_le32(7),
294 .pipedir = __cpu_to_le32(PIPEDIR_INOUT),
295 .nentries = __cpu_to_le32(0),
296 .nbytes_max = __cpu_to_le32(0),
297 .flags = __cpu_to_le32(0),
298 .reserved = __cpu_to_le32(0),
301 /* CE8 target->host packtlog */
303 .pipenum = __cpu_to_le32(8),
304 .pipedir = __cpu_to_le32(PIPEDIR_IN),
305 .nentries = __cpu_to_le32(64),
306 .nbytes_max = __cpu_to_le32(2048),
307 .flags = __cpu_to_le32(CE_ATTR_FLAGS | CE_ATTR_DIS_INTR),
308 .reserved = __cpu_to_le32(0),
311 /* CE9 target autonomous qcache memcpy */
313 .pipenum = __cpu_to_le32(9),
314 .pipedir = __cpu_to_le32(PIPEDIR_INOUT),
315 .nentries = __cpu_to_le32(32),
316 .nbytes_max = __cpu_to_le32(2048),
317 .flags = __cpu_to_le32(CE_ATTR_FLAGS | CE_ATTR_DIS_INTR),
318 .reserved = __cpu_to_le32(0),
321 /* It not necessary to send target wlan configuration for CE10 & CE11
322 * as these CEs are not actively used in target.
327 * Map from service/endpoint to Copy Engine.
328 * This table is derived from the CE_PCI TABLE, above.
329 * It is passed to the Target at startup for use by firmware.
331 static struct service_to_pipe target_service_to_ce_map_wlan[] = {
333 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VO),
334 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
338 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VO),
339 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
343 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BK),
344 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
348 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BK),
349 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
353 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BE),
354 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
358 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BE),
359 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
363 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VI),
364 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
368 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VI),
369 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
373 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_CONTROL),
374 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
378 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_CONTROL),
379 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
383 __cpu_to_le32(ATH10K_HTC_SVC_ID_RSVD_CTRL),
384 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
388 __cpu_to_le32(ATH10K_HTC_SVC_ID_RSVD_CTRL),
389 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
393 __cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS),
394 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
398 __cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS),
399 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
403 __cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA_MSG),
404 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
408 __cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA_MSG),
409 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
413 /* (Additions here) */
422 static bool ath10k_pci_is_awake(struct ath10k *ar)
424 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
425 u32 val = ioread32(ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
428 return RTC_STATE_V_GET(val) == RTC_STATE_V_ON;
431 static void __ath10k_pci_wake(struct ath10k *ar)
433 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
435 lockdep_assert_held(&ar_pci->ps_lock);
437 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps wake reg refcount %lu awake %d\n",
438 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
440 iowrite32(PCIE_SOC_WAKE_V_MASK,
441 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
442 PCIE_SOC_WAKE_ADDRESS);
445 static void __ath10k_pci_sleep(struct ath10k *ar)
447 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
449 lockdep_assert_held(&ar_pci->ps_lock);
451 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps sleep reg refcount %lu awake %d\n",
452 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
454 iowrite32(PCIE_SOC_WAKE_RESET,
455 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
456 PCIE_SOC_WAKE_ADDRESS);
457 ar_pci->ps_awake = false;
460 static int ath10k_pci_wake_wait(struct ath10k *ar)
465 while (tot_delay < PCIE_WAKE_TIMEOUT) {
466 if (ath10k_pci_is_awake(ar)) {
467 if (tot_delay > PCIE_WAKE_LATE_US)
468 ath10k_warn(ar, "device wakeup took %d ms which is unusally long, otherwise it works normally.\n",
474 tot_delay += curr_delay;
483 static int ath10k_pci_force_wake(struct ath10k *ar)
485 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
492 spin_lock_irqsave(&ar_pci->ps_lock, flags);
494 if (!ar_pci->ps_awake) {
495 iowrite32(PCIE_SOC_WAKE_V_MASK,
496 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
497 PCIE_SOC_WAKE_ADDRESS);
499 ret = ath10k_pci_wake_wait(ar);
501 ar_pci->ps_awake = true;
504 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
509 static void ath10k_pci_force_sleep(struct ath10k *ar)
511 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
514 spin_lock_irqsave(&ar_pci->ps_lock, flags);
516 iowrite32(PCIE_SOC_WAKE_RESET,
517 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
518 PCIE_SOC_WAKE_ADDRESS);
519 ar_pci->ps_awake = false;
521 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
524 static int ath10k_pci_wake(struct ath10k *ar)
526 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
530 if (ar_pci->pci_ps == 0)
533 spin_lock_irqsave(&ar_pci->ps_lock, flags);
535 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps wake refcount %lu awake %d\n",
536 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
538 /* This function can be called very frequently. To avoid excessive
539 * CPU stalls for MMIO reads use a cache var to hold the device state.
541 if (!ar_pci->ps_awake) {
542 __ath10k_pci_wake(ar);
544 ret = ath10k_pci_wake_wait(ar);
546 ar_pci->ps_awake = true;
550 ar_pci->ps_wake_refcount++;
551 WARN_ON(ar_pci->ps_wake_refcount == 0);
554 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
559 static void ath10k_pci_sleep(struct ath10k *ar)
561 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
564 if (ar_pci->pci_ps == 0)
567 spin_lock_irqsave(&ar_pci->ps_lock, flags);
569 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps sleep refcount %lu awake %d\n",
570 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
572 if (WARN_ON(ar_pci->ps_wake_refcount == 0))
575 ar_pci->ps_wake_refcount--;
577 mod_timer(&ar_pci->ps_timer, jiffies +
578 msecs_to_jiffies(ATH10K_PCI_SLEEP_GRACE_PERIOD_MSEC));
581 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
584 static void ath10k_pci_ps_timer(unsigned long ptr)
586 struct ath10k *ar = (void *)ptr;
587 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
590 spin_lock_irqsave(&ar_pci->ps_lock, flags);
592 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps timer refcount %lu awake %d\n",
593 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
595 if (ar_pci->ps_wake_refcount > 0)
598 __ath10k_pci_sleep(ar);
601 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
604 static void ath10k_pci_sleep_sync(struct ath10k *ar)
606 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
609 if (ar_pci->pci_ps == 0) {
610 ath10k_pci_force_sleep(ar);
614 del_timer_sync(&ar_pci->ps_timer);
616 spin_lock_irqsave(&ar_pci->ps_lock, flags);
617 WARN_ON(ar_pci->ps_wake_refcount > 0);
618 __ath10k_pci_sleep(ar);
619 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
622 static void ath10k_bus_pci_write32(struct ath10k *ar, u32 offset, u32 value)
624 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
627 if (unlikely(offset + sizeof(value) > ar_pci->mem_len)) {
628 ath10k_warn(ar, "refusing to write mmio out of bounds at 0x%08x - 0x%08zx (max 0x%08zx)\n",
629 offset, offset + sizeof(value), ar_pci->mem_len);
633 ret = ath10k_pci_wake(ar);
635 ath10k_warn(ar, "failed to wake target for write32 of 0x%08x at 0x%08x: %d\n",
640 iowrite32(value, ar_pci->mem + offset);
641 ath10k_pci_sleep(ar);
644 static u32 ath10k_bus_pci_read32(struct ath10k *ar, u32 offset)
646 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
650 if (unlikely(offset + sizeof(val) > ar_pci->mem_len)) {
651 ath10k_warn(ar, "refusing to read mmio out of bounds at 0x%08x - 0x%08zx (max 0x%08zx)\n",
652 offset, offset + sizeof(val), ar_pci->mem_len);
656 ret = ath10k_pci_wake(ar);
658 ath10k_warn(ar, "failed to wake target for read32 at 0x%08x: %d\n",
663 val = ioread32(ar_pci->mem + offset);
664 ath10k_pci_sleep(ar);
669 inline void ath10k_pci_write32(struct ath10k *ar, u32 offset, u32 value)
671 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
673 ar_pci->bus_ops->write32(ar, offset, value);
676 inline u32 ath10k_pci_read32(struct ath10k *ar, u32 offset)
678 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
680 return ar_pci->bus_ops->read32(ar, offset);
683 u32 ath10k_pci_soc_read32(struct ath10k *ar, u32 addr)
685 return ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS + addr);
688 void ath10k_pci_soc_write32(struct ath10k *ar, u32 addr, u32 val)
690 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + addr, val);
693 u32 ath10k_pci_reg_read32(struct ath10k *ar, u32 addr)
695 return ath10k_pci_read32(ar, PCIE_LOCAL_BASE_ADDRESS + addr);
698 void ath10k_pci_reg_write32(struct ath10k *ar, u32 addr, u32 val)
700 ath10k_pci_write32(ar, PCIE_LOCAL_BASE_ADDRESS + addr, val);
703 bool ath10k_pci_irq_pending(struct ath10k *ar)
707 /* Check if the shared legacy irq is for us */
708 cause = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
709 PCIE_INTR_CAUSE_ADDRESS);
710 if (cause & (PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL))
716 void ath10k_pci_disable_and_clear_legacy_irq(struct ath10k *ar)
718 /* IMPORTANT: INTR_CLR register has to be set after
719 * INTR_ENABLE is set to 0, otherwise interrupt can not be
721 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
723 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_CLR_ADDRESS,
724 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
726 /* IMPORTANT: this extra read transaction is required to
727 * flush the posted write buffer. */
728 (void)ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
729 PCIE_INTR_ENABLE_ADDRESS);
732 void ath10k_pci_enable_legacy_irq(struct ath10k *ar)
734 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
735 PCIE_INTR_ENABLE_ADDRESS,
736 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
738 /* IMPORTANT: this extra read transaction is required to
739 * flush the posted write buffer. */
740 (void)ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
741 PCIE_INTR_ENABLE_ADDRESS);
744 static inline const char *ath10k_pci_get_irq_method(struct ath10k *ar)
746 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
748 if (ar_pci->num_msi_intrs > 1)
751 if (ar_pci->num_msi_intrs == 1)
757 static int __ath10k_pci_rx_post_buf(struct ath10k_pci_pipe *pipe)
759 struct ath10k *ar = pipe->hif_ce_state;
760 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
761 struct ath10k_ce_pipe *ce_pipe = pipe->ce_hdl;
766 skb = dev_alloc_skb(pipe->buf_sz);
770 WARN_ONCE((unsigned long)skb->data & 3, "unaligned skb");
772 paddr = dma_map_single(ar->dev, skb->data,
773 skb->len + skb_tailroom(skb),
775 if (unlikely(dma_mapping_error(ar->dev, paddr))) {
776 ath10k_warn(ar, "failed to dma map pci rx buf\n");
777 dev_kfree_skb_any(skb);
781 ATH10K_SKB_RXCB(skb)->paddr = paddr;
783 spin_lock_bh(&ar_pci->ce_lock);
784 ret = __ath10k_ce_rx_post_buf(ce_pipe, skb, paddr);
785 spin_unlock_bh(&ar_pci->ce_lock);
787 dma_unmap_single(ar->dev, paddr, skb->len + skb_tailroom(skb),
789 dev_kfree_skb_any(skb);
796 static void ath10k_pci_rx_post_pipe(struct ath10k_pci_pipe *pipe)
798 struct ath10k *ar = pipe->hif_ce_state;
799 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
800 struct ath10k_ce_pipe *ce_pipe = pipe->ce_hdl;
803 if (pipe->buf_sz == 0)
806 if (!ce_pipe->dest_ring)
809 spin_lock_bh(&ar_pci->ce_lock);
810 num = __ath10k_ce_rx_num_free_bufs(ce_pipe);
811 spin_unlock_bh(&ar_pci->ce_lock);
813 ret = __ath10k_pci_rx_post_buf(pipe);
817 ath10k_warn(ar, "failed to post pci rx buf: %d\n", ret);
818 mod_timer(&ar_pci->rx_post_retry, jiffies +
819 ATH10K_PCI_RX_POST_RETRY_MS);
825 void ath10k_pci_rx_post(struct ath10k *ar)
827 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
830 for (i = 0; i < CE_COUNT; i++)
831 ath10k_pci_rx_post_pipe(&ar_pci->pipe_info[i]);
834 void ath10k_pci_rx_replenish_retry(unsigned long ptr)
836 struct ath10k *ar = (void *)ptr;
838 ath10k_pci_rx_post(ar);
841 static u32 ath10k_pci_targ_cpu_to_ce_addr(struct ath10k *ar, u32 addr)
845 switch (ar->hw_rev) {
846 case ATH10K_HW_QCA988X:
847 case ATH10K_HW_QCA6174:
848 case ATH10K_HW_QCA9377:
849 val = (ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
853 case ATH10K_HW_QCA99X0:
854 case ATH10K_HW_QCA4019:
855 val = ath10k_pci_read32(ar, PCIE_BAR_REG_ADDRESS);
859 val |= 0x100000 | (addr & 0xfffff);
864 * Diagnostic read/write access is provided for startup/config/debug usage.
865 * Caller must guarantee proper alignment, when applicable, and single user
868 static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data,
871 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
874 unsigned int completed_nbytes, orig_nbytes, remaining_bytes;
875 struct ath10k_ce_pipe *ce_diag;
876 /* Host buffer address in CE space */
878 dma_addr_t ce_data_base = 0;
879 void *data_buf = NULL;
882 spin_lock_bh(&ar_pci->ce_lock);
884 ce_diag = ar_pci->ce_diag;
887 * Allocate a temporary bounce buffer to hold caller's data
888 * to be DMA'ed from Target. This guarantees
889 * 1) 4-byte alignment
890 * 2) Buffer in DMA-able space
892 orig_nbytes = nbytes;
893 data_buf = (unsigned char *)dma_alloc_coherent(ar->dev,
902 memset(data_buf, 0, orig_nbytes);
904 remaining_bytes = orig_nbytes;
905 ce_data = ce_data_base;
906 while (remaining_bytes) {
907 nbytes = min_t(unsigned int, remaining_bytes,
908 DIAG_TRANSFER_LIMIT);
910 ret = __ath10k_ce_rx_post_buf(ce_diag, &ce_data, ce_data);
914 /* Request CE to send from Target(!) address to Host buffer */
916 * The address supplied by the caller is in the
917 * Target CPU virtual address space.
919 * In order to use this address with the diagnostic CE,
920 * convert it from Target CPU virtual address space
921 * to CE address space
923 address = ath10k_pci_targ_cpu_to_ce_addr(ar, address);
925 ret = ath10k_ce_send_nolock(ce_diag, NULL, (u32)address, nbytes, 0,
931 while (ath10k_ce_completed_send_next_nolock(ce_diag,
934 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
941 while (ath10k_ce_completed_recv_next_nolock(ce_diag,
947 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
953 if (nbytes != completed_nbytes) {
958 if (*buf != ce_data) {
963 remaining_bytes -= nbytes;
970 memcpy(data, data_buf, orig_nbytes);
972 ath10k_warn(ar, "failed to read diag value at 0x%x: %d\n",
976 dma_free_coherent(ar->dev, orig_nbytes, data_buf,
979 spin_unlock_bh(&ar_pci->ce_lock);
984 static int ath10k_pci_diag_read32(struct ath10k *ar, u32 address, u32 *value)
989 ret = ath10k_pci_diag_read_mem(ar, address, &val, sizeof(val));
990 *value = __le32_to_cpu(val);
995 static int __ath10k_pci_diag_read_hi(struct ath10k *ar, void *dest,
1001 host_addr = host_interest_item_address(src);
1003 ret = ath10k_pci_diag_read32(ar, host_addr, &addr);
1005 ath10k_warn(ar, "failed to get memcpy hi address for firmware address %d: %d\n",
1010 ret = ath10k_pci_diag_read_mem(ar, addr, dest, len);
1012 ath10k_warn(ar, "failed to memcpy firmware memory from %d (%d B): %d\n",
1020 #define ath10k_pci_diag_read_hi(ar, dest, src, len) \
1021 __ath10k_pci_diag_read_hi(ar, dest, HI_ITEM(src), len)
1023 int ath10k_pci_diag_write_mem(struct ath10k *ar, u32 address,
1024 const void *data, int nbytes)
1026 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1029 unsigned int completed_nbytes, orig_nbytes, remaining_bytes;
1030 struct ath10k_ce_pipe *ce_diag;
1031 void *data_buf = NULL;
1032 u32 ce_data; /* Host buffer address in CE space */
1033 dma_addr_t ce_data_base = 0;
1036 spin_lock_bh(&ar_pci->ce_lock);
1038 ce_diag = ar_pci->ce_diag;
1041 * Allocate a temporary bounce buffer to hold caller's data
1042 * to be DMA'ed to Target. This guarantees
1043 * 1) 4-byte alignment
1044 * 2) Buffer in DMA-able space
1046 orig_nbytes = nbytes;
1047 data_buf = (unsigned char *)dma_alloc_coherent(ar->dev,
1056 /* Copy caller's data to allocated DMA buf */
1057 memcpy(data_buf, data, orig_nbytes);
1060 * The address supplied by the caller is in the
1061 * Target CPU virtual address space.
1063 * In order to use this address with the diagnostic CE,
1065 * Target CPU virtual address space
1069 address = ath10k_pci_targ_cpu_to_ce_addr(ar, address);
1071 remaining_bytes = orig_nbytes;
1072 ce_data = ce_data_base;
1073 while (remaining_bytes) {
1074 /* FIXME: check cast */
1075 nbytes = min_t(int, remaining_bytes, DIAG_TRANSFER_LIMIT);
1077 /* Set up to receive directly into Target(!) address */
1078 ret = __ath10k_ce_rx_post_buf(ce_diag, &address, address);
1083 * Request CE to send caller-supplied data that
1084 * was copied to bounce buffer to Target(!) address.
1086 ret = ath10k_ce_send_nolock(ce_diag, NULL, (u32)ce_data,
1092 while (ath10k_ce_completed_send_next_nolock(ce_diag,
1096 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
1103 while (ath10k_ce_completed_recv_next_nolock(ce_diag,
1109 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
1115 if (nbytes != completed_nbytes) {
1120 if (*buf != address) {
1125 remaining_bytes -= nbytes;
1132 dma_free_coherent(ar->dev, orig_nbytes, data_buf,
1137 ath10k_warn(ar, "failed to write diag value at 0x%x: %d\n",
1140 spin_unlock_bh(&ar_pci->ce_lock);
1145 static int ath10k_pci_diag_write32(struct ath10k *ar, u32 address, u32 value)
1147 __le32 val = __cpu_to_le32(value);
1149 return ath10k_pci_diag_write_mem(ar, address, &val, sizeof(val));
1152 /* Called by lower (CE) layer when a send to Target completes. */
1153 static void ath10k_pci_htc_tx_cb(struct ath10k_ce_pipe *ce_state)
1155 struct ath10k *ar = ce_state->ar;
1156 struct sk_buff_head list;
1157 struct sk_buff *skb;
1159 __skb_queue_head_init(&list);
1160 while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) {
1161 /* no need to call tx completion for NULL pointers */
1165 __skb_queue_tail(&list, skb);
1168 while ((skb = __skb_dequeue(&list)))
1169 ath10k_htc_tx_completion_handler(ar, skb);
1172 static void ath10k_pci_process_rx_cb(struct ath10k_ce_pipe *ce_state,
1173 void (*callback)(struct ath10k *ar,
1174 struct sk_buff *skb))
1176 struct ath10k *ar = ce_state->ar;
1177 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1178 struct ath10k_pci_pipe *pipe_info = &ar_pci->pipe_info[ce_state->id];
1179 struct sk_buff *skb;
1180 struct sk_buff_head list;
1181 void *transfer_context;
1182 unsigned int nbytes, max_nbytes;
1184 __skb_queue_head_init(&list);
1185 while (ath10k_ce_completed_recv_next(ce_state, &transfer_context,
1187 skb = transfer_context;
1188 max_nbytes = skb->len + skb_tailroom(skb);
1189 dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1190 max_nbytes, DMA_FROM_DEVICE);
1192 if (unlikely(max_nbytes < nbytes)) {
1193 ath10k_warn(ar, "rxed more than expected (nbytes %d, max %d)",
1194 nbytes, max_nbytes);
1195 dev_kfree_skb_any(skb);
1199 skb_put(skb, nbytes);
1200 __skb_queue_tail(&list, skb);
1203 while ((skb = __skb_dequeue(&list))) {
1204 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci rx ce pipe %d len %d\n",
1205 ce_state->id, skb->len);
1206 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci rx: ",
1207 skb->data, skb->len);
1212 ath10k_pci_rx_post_pipe(pipe_info);
1215 /* Called by lower (CE) layer when data is received from the Target. */
1216 static void ath10k_pci_htc_rx_cb(struct ath10k_ce_pipe *ce_state)
1218 ath10k_pci_process_rx_cb(ce_state, ath10k_htc_rx_completion_handler);
1221 static void ath10k_pci_htt_htc_rx_cb(struct ath10k_ce_pipe *ce_state)
1223 /* CE4 polling needs to be done whenever CE pipe which transports
1224 * HTT Rx (target->host) is processed.
1226 ath10k_ce_per_engine_service(ce_state->ar, 4);
1228 ath10k_pci_process_rx_cb(ce_state, ath10k_htc_rx_completion_handler);
1231 /* Called by lower (CE) layer when data is received from the Target.
1232 * Only 10.4 firmware uses separate CE to transfer pktlog data.
1234 static void ath10k_pci_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state)
1236 ath10k_pci_process_rx_cb(ce_state,
1237 ath10k_htt_rx_pktlog_completion_handler);
1240 /* Called by lower (CE) layer when a send to HTT Target completes. */
1241 static void ath10k_pci_htt_tx_cb(struct ath10k_ce_pipe *ce_state)
1243 struct ath10k *ar = ce_state->ar;
1244 struct sk_buff *skb;
1246 while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) {
1247 /* no need to call tx completion for NULL pointers */
1251 dma_unmap_single(ar->dev, ATH10K_SKB_CB(skb)->paddr,
1252 skb->len, DMA_TO_DEVICE);
1253 ath10k_htt_hif_tx_complete(ar, skb);
1257 static void ath10k_pci_htt_rx_deliver(struct ath10k *ar, struct sk_buff *skb)
1259 skb_pull(skb, sizeof(struct ath10k_htc_hdr));
1260 ath10k_htt_t2h_msg_handler(ar, skb);
1263 /* Called by lower (CE) layer when HTT data is received from the Target. */
1264 static void ath10k_pci_htt_rx_cb(struct ath10k_ce_pipe *ce_state)
1266 /* CE4 polling needs to be done whenever CE pipe which transports
1267 * HTT Rx (target->host) is processed.
1269 ath10k_ce_per_engine_service(ce_state->ar, 4);
1271 ath10k_pci_process_rx_cb(ce_state, ath10k_pci_htt_rx_deliver);
1274 int ath10k_pci_hif_tx_sg(struct ath10k *ar, u8 pipe_id,
1275 struct ath10k_hif_sg_item *items, int n_items)
1277 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1278 struct ath10k_pci_pipe *pci_pipe = &ar_pci->pipe_info[pipe_id];
1279 struct ath10k_ce_pipe *ce_pipe = pci_pipe->ce_hdl;
1280 struct ath10k_ce_ring *src_ring = ce_pipe->src_ring;
1281 unsigned int nentries_mask;
1282 unsigned int sw_index;
1283 unsigned int write_index;
1286 spin_lock_bh(&ar_pci->ce_lock);
1288 nentries_mask = src_ring->nentries_mask;
1289 sw_index = src_ring->sw_index;
1290 write_index = src_ring->write_index;
1292 if (unlikely(CE_RING_DELTA(nentries_mask,
1293 write_index, sw_index - 1) < n_items)) {
1298 for (i = 0; i < n_items - 1; i++) {
1299 ath10k_dbg(ar, ATH10K_DBG_PCI,
1300 "pci tx item %d paddr 0x%08x len %d n_items %d\n",
1301 i, items[i].paddr, items[i].len, n_items);
1302 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci tx data: ",
1303 items[i].vaddr, items[i].len);
1305 err = ath10k_ce_send_nolock(ce_pipe,
1306 items[i].transfer_context,
1309 items[i].transfer_id,
1310 CE_SEND_FLAG_GATHER);
1315 /* `i` is equal to `n_items -1` after for() */
1317 ath10k_dbg(ar, ATH10K_DBG_PCI,
1318 "pci tx item %d paddr 0x%08x len %d n_items %d\n",
1319 i, items[i].paddr, items[i].len, n_items);
1320 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci tx data: ",
1321 items[i].vaddr, items[i].len);
1323 err = ath10k_ce_send_nolock(ce_pipe,
1324 items[i].transfer_context,
1327 items[i].transfer_id,
1332 spin_unlock_bh(&ar_pci->ce_lock);
1337 __ath10k_ce_send_revert(ce_pipe);
1339 spin_unlock_bh(&ar_pci->ce_lock);
1343 int ath10k_pci_hif_diag_read(struct ath10k *ar, u32 address, void *buf,
1346 return ath10k_pci_diag_read_mem(ar, address, buf, buf_len);
1349 u16 ath10k_pci_hif_get_free_queue_number(struct ath10k *ar, u8 pipe)
1351 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1353 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif get free queue number\n");
1355 return ath10k_ce_num_free_src_entries(ar_pci->pipe_info[pipe].ce_hdl);
1358 static void ath10k_pci_dump_registers(struct ath10k *ar,
1359 struct ath10k_fw_crash_data *crash_data)
1361 __le32 reg_dump_values[REG_DUMP_COUNT_QCA988X] = {};
1364 lockdep_assert_held(&ar->data_lock);
1366 ret = ath10k_pci_diag_read_hi(ar, ®_dump_values[0],
1368 REG_DUMP_COUNT_QCA988X * sizeof(__le32));
1370 ath10k_err(ar, "failed to read firmware dump area: %d\n", ret);
1374 BUILD_BUG_ON(REG_DUMP_COUNT_QCA988X % 4);
1376 ath10k_err(ar, "firmware register dump:\n");
1377 for (i = 0; i < REG_DUMP_COUNT_QCA988X; i += 4)
1378 ath10k_err(ar, "[%02d]: 0x%08X 0x%08X 0x%08X 0x%08X\n",
1380 __le32_to_cpu(reg_dump_values[i]),
1381 __le32_to_cpu(reg_dump_values[i + 1]),
1382 __le32_to_cpu(reg_dump_values[i + 2]),
1383 __le32_to_cpu(reg_dump_values[i + 3]));
1388 for (i = 0; i < REG_DUMP_COUNT_QCA988X; i++)
1389 crash_data->registers[i] = reg_dump_values[i];
1392 static void ath10k_pci_fw_crashed_dump(struct ath10k *ar)
1394 struct ath10k_fw_crash_data *crash_data;
1397 spin_lock_bh(&ar->data_lock);
1399 ar->stats.fw_crash_counter++;
1401 crash_data = ath10k_debug_get_new_fw_crash_data(ar);
1404 scnprintf(uuid, sizeof(uuid), "%pUl", &crash_data->uuid);
1406 scnprintf(uuid, sizeof(uuid), "n/a");
1408 ath10k_err(ar, "firmware crashed! (uuid %s)\n", uuid);
1409 ath10k_print_driver_info(ar);
1410 ath10k_pci_dump_registers(ar, crash_data);
1412 spin_unlock_bh(&ar->data_lock);
1414 queue_work(ar->workqueue, &ar->restart_work);
1417 void ath10k_pci_hif_send_complete_check(struct ath10k *ar, u8 pipe,
1420 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif send complete check\n");
1425 * Decide whether to actually poll for completions, or just
1426 * wait for a later chance.
1427 * If there seem to be plenty of resources left, then just wait
1428 * since checking involves reading a CE register, which is a
1429 * relatively expensive operation.
1431 resources = ath10k_pci_hif_get_free_queue_number(ar, pipe);
1434 * If at least 50% of the total resources are still available,
1435 * don't bother checking again yet.
1437 if (resources > (host_ce_config_wlan[pipe].src_nentries >> 1))
1440 ath10k_ce_per_engine_service(ar, pipe);
1443 void ath10k_pci_kill_tasklet(struct ath10k *ar)
1445 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1448 tasklet_kill(&ar_pci->intr_tq);
1449 tasklet_kill(&ar_pci->msi_fw_err);
1451 for (i = 0; i < CE_COUNT; i++)
1452 tasklet_kill(&ar_pci->pipe_info[i].intr);
1454 del_timer_sync(&ar_pci->rx_post_retry);
1457 int ath10k_pci_hif_map_service_to_pipe(struct ath10k *ar, u16 service_id,
1458 u8 *ul_pipe, u8 *dl_pipe)
1460 const struct service_to_pipe *entry;
1461 bool ul_set = false, dl_set = false;
1464 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif map service\n");
1466 for (i = 0; i < ARRAY_SIZE(target_service_to_ce_map_wlan); i++) {
1467 entry = &target_service_to_ce_map_wlan[i];
1469 if (__le32_to_cpu(entry->service_id) != service_id)
1472 switch (__le32_to_cpu(entry->pipedir)) {
1477 *dl_pipe = __le32_to_cpu(entry->pipenum);
1482 *ul_pipe = __le32_to_cpu(entry->pipenum);
1488 *dl_pipe = __le32_to_cpu(entry->pipenum);
1489 *ul_pipe = __le32_to_cpu(entry->pipenum);
1496 if (WARN_ON(!ul_set || !dl_set))
1502 void ath10k_pci_hif_get_default_pipe(struct ath10k *ar,
1503 u8 *ul_pipe, u8 *dl_pipe)
1505 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif get default pipe\n");
1507 (void)ath10k_pci_hif_map_service_to_pipe(ar,
1508 ATH10K_HTC_SVC_ID_RSVD_CTRL,
1512 static void ath10k_pci_irq_msi_fw_mask(struct ath10k *ar)
1516 switch (ar->hw_rev) {
1517 case ATH10K_HW_QCA988X:
1518 case ATH10K_HW_QCA6174:
1519 case ATH10K_HW_QCA9377:
1520 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
1522 val &= ~CORE_CTRL_PCIE_REG_31_MASK;
1523 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
1524 CORE_CTRL_ADDRESS, val);
1526 case ATH10K_HW_QCA99X0:
1527 case ATH10K_HW_QCA4019:
1528 /* TODO: Find appropriate register configuration for QCA99X0
1535 static void ath10k_pci_irq_msi_fw_unmask(struct ath10k *ar)
1539 switch (ar->hw_rev) {
1540 case ATH10K_HW_QCA988X:
1541 case ATH10K_HW_QCA6174:
1542 case ATH10K_HW_QCA9377:
1543 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
1545 val |= CORE_CTRL_PCIE_REG_31_MASK;
1546 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
1547 CORE_CTRL_ADDRESS, val);
1549 case ATH10K_HW_QCA99X0:
1550 case ATH10K_HW_QCA4019:
1551 /* TODO: Find appropriate register configuration for QCA99X0
1552 * to unmask irq/MSI.
1558 static void ath10k_pci_irq_disable(struct ath10k *ar)
1560 ath10k_ce_disable_interrupts(ar);
1561 ath10k_pci_disable_and_clear_legacy_irq(ar);
1562 ath10k_pci_irq_msi_fw_mask(ar);
1565 static void ath10k_pci_irq_sync(struct ath10k *ar)
1567 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1570 for (i = 0; i < max(1, ar_pci->num_msi_intrs); i++)
1571 synchronize_irq(ar_pci->pdev->irq + i);
1574 static void ath10k_pci_irq_enable(struct ath10k *ar)
1576 ath10k_ce_enable_interrupts(ar);
1577 ath10k_pci_enable_legacy_irq(ar);
1578 ath10k_pci_irq_msi_fw_unmask(ar);
1581 static int ath10k_pci_hif_start(struct ath10k *ar)
1583 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1585 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif start\n");
1587 ath10k_pci_irq_enable(ar);
1588 ath10k_pci_rx_post(ar);
1590 pcie_capability_write_word(ar_pci->pdev, PCI_EXP_LNKCTL,
1596 static void ath10k_pci_rx_pipe_cleanup(struct ath10k_pci_pipe *pci_pipe)
1599 struct ath10k_ce_pipe *ce_pipe;
1600 struct ath10k_ce_ring *ce_ring;
1601 struct sk_buff *skb;
1604 ar = pci_pipe->hif_ce_state;
1605 ce_pipe = pci_pipe->ce_hdl;
1606 ce_ring = ce_pipe->dest_ring;
1611 if (!pci_pipe->buf_sz)
1614 for (i = 0; i < ce_ring->nentries; i++) {
1615 skb = ce_ring->per_transfer_context[i];
1619 ce_ring->per_transfer_context[i] = NULL;
1621 dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1622 skb->len + skb_tailroom(skb),
1624 dev_kfree_skb_any(skb);
1628 static void ath10k_pci_tx_pipe_cleanup(struct ath10k_pci_pipe *pci_pipe)
1631 struct ath10k_pci *ar_pci;
1632 struct ath10k_ce_pipe *ce_pipe;
1633 struct ath10k_ce_ring *ce_ring;
1634 struct sk_buff *skb;
1637 ar = pci_pipe->hif_ce_state;
1638 ar_pci = ath10k_pci_priv(ar);
1639 ce_pipe = pci_pipe->ce_hdl;
1640 ce_ring = ce_pipe->src_ring;
1645 if (!pci_pipe->buf_sz)
1648 for (i = 0; i < ce_ring->nentries; i++) {
1649 skb = ce_ring->per_transfer_context[i];
1653 ce_ring->per_transfer_context[i] = NULL;
1655 ath10k_htc_tx_completion_handler(ar, skb);
1660 * Cleanup residual buffers for device shutdown:
1661 * buffers that were enqueued for receive
1662 * buffers that were to be sent
1663 * Note: Buffers that had completed but which were
1664 * not yet processed are on a completion queue. They
1665 * are handled when the completion thread shuts down.
1667 static void ath10k_pci_buffer_cleanup(struct ath10k *ar)
1669 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1672 for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) {
1673 struct ath10k_pci_pipe *pipe_info;
1675 pipe_info = &ar_pci->pipe_info[pipe_num];
1676 ath10k_pci_rx_pipe_cleanup(pipe_info);
1677 ath10k_pci_tx_pipe_cleanup(pipe_info);
1681 void ath10k_pci_ce_deinit(struct ath10k *ar)
1685 for (i = 0; i < CE_COUNT; i++)
1686 ath10k_ce_deinit_pipe(ar, i);
1689 void ath10k_pci_flush(struct ath10k *ar)
1691 ath10k_pci_kill_tasklet(ar);
1692 ath10k_pci_buffer_cleanup(ar);
1695 static void ath10k_pci_hif_stop(struct ath10k *ar)
1697 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1698 unsigned long flags;
1700 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif stop\n");
1702 /* Most likely the device has HTT Rx ring configured. The only way to
1703 * prevent the device from accessing (and possible corrupting) host
1704 * memory is to reset the chip now.
1706 * There's also no known way of masking MSI interrupts on the device.
1707 * For ranged MSI the CE-related interrupts can be masked. However
1708 * regardless how many MSI interrupts are assigned the first one
1709 * is always used for firmware indications (crashes) and cannot be
1710 * masked. To prevent the device from asserting the interrupt reset it
1711 * before proceeding with cleanup.
1713 ath10k_pci_safe_chip_reset(ar);
1715 ath10k_pci_irq_disable(ar);
1716 ath10k_pci_irq_sync(ar);
1717 ath10k_pci_flush(ar);
1719 spin_lock_irqsave(&ar_pci->ps_lock, flags);
1720 WARN_ON(ar_pci->ps_wake_refcount > 0);
1721 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
1724 int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar,
1725 void *req, u32 req_len,
1726 void *resp, u32 *resp_len)
1728 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1729 struct ath10k_pci_pipe *pci_tx = &ar_pci->pipe_info[BMI_CE_NUM_TO_TARG];
1730 struct ath10k_pci_pipe *pci_rx = &ar_pci->pipe_info[BMI_CE_NUM_TO_HOST];
1731 struct ath10k_ce_pipe *ce_tx = pci_tx->ce_hdl;
1732 struct ath10k_ce_pipe *ce_rx = pci_rx->ce_hdl;
1733 dma_addr_t req_paddr = 0;
1734 dma_addr_t resp_paddr = 0;
1735 struct bmi_xfer xfer = {};
1736 void *treq, *tresp = NULL;
1741 if (resp && !resp_len)
1744 if (resp && resp_len && *resp_len == 0)
1747 treq = kmemdup(req, req_len, GFP_KERNEL);
1751 req_paddr = dma_map_single(ar->dev, treq, req_len, DMA_TO_DEVICE);
1752 ret = dma_mapping_error(ar->dev, req_paddr);
1758 if (resp && resp_len) {
1759 tresp = kzalloc(*resp_len, GFP_KERNEL);
1765 resp_paddr = dma_map_single(ar->dev, tresp, *resp_len,
1767 ret = dma_mapping_error(ar->dev, resp_paddr);
1773 xfer.wait_for_resp = true;
1776 ath10k_ce_rx_post_buf(ce_rx, &xfer, resp_paddr);
1779 ret = ath10k_ce_send(ce_tx, &xfer, req_paddr, req_len, -1, 0);
1783 ret = ath10k_pci_bmi_wait(ce_tx, ce_rx, &xfer);
1786 unsigned int unused_nbytes;
1787 unsigned int unused_id;
1789 ath10k_ce_cancel_send_next(ce_tx, NULL, &unused_buffer,
1790 &unused_nbytes, &unused_id);
1792 /* non-zero means we did not time out */
1800 ath10k_ce_revoke_recv_next(ce_rx, NULL, &unused_buffer);
1801 dma_unmap_single(ar->dev, resp_paddr,
1802 *resp_len, DMA_FROM_DEVICE);
1805 dma_unmap_single(ar->dev, req_paddr, req_len, DMA_TO_DEVICE);
1807 if (ret == 0 && resp_len) {
1808 *resp_len = min(*resp_len, xfer.resp_len);
1809 memcpy(resp, tresp, xfer.resp_len);
1818 static void ath10k_pci_bmi_send_done(struct ath10k_ce_pipe *ce_state)
1820 struct bmi_xfer *xfer;
1822 if (ath10k_ce_completed_send_next(ce_state, (void **)&xfer))
1825 xfer->tx_done = true;
1828 static void ath10k_pci_bmi_recv_data(struct ath10k_ce_pipe *ce_state)
1830 struct ath10k *ar = ce_state->ar;
1831 struct bmi_xfer *xfer;
1832 unsigned int nbytes;
1834 if (ath10k_ce_completed_recv_next(ce_state, (void **)&xfer,
1838 if (WARN_ON_ONCE(!xfer))
1841 if (!xfer->wait_for_resp) {
1842 ath10k_warn(ar, "unexpected: BMI data received; ignoring\n");
1846 xfer->resp_len = nbytes;
1847 xfer->rx_done = true;
1850 static int ath10k_pci_bmi_wait(struct ath10k_ce_pipe *tx_pipe,
1851 struct ath10k_ce_pipe *rx_pipe,
1852 struct bmi_xfer *xfer)
1854 unsigned long timeout = jiffies + BMI_COMMUNICATION_TIMEOUT_HZ;
1856 while (time_before_eq(jiffies, timeout)) {
1857 ath10k_pci_bmi_send_done(tx_pipe);
1858 ath10k_pci_bmi_recv_data(rx_pipe);
1860 if (xfer->tx_done && (xfer->rx_done == xfer->wait_for_resp))
1870 * Send an interrupt to the device to wake up the Target CPU
1871 * so it has an opportunity to notice any changed state.
1873 static int ath10k_pci_wake_target_cpu(struct ath10k *ar)
1877 addr = SOC_CORE_BASE_ADDRESS | CORE_CTRL_ADDRESS;
1878 val = ath10k_pci_read32(ar, addr);
1879 val |= CORE_CTRL_CPU_INTR_MASK;
1880 ath10k_pci_write32(ar, addr, val);
1885 static int ath10k_pci_get_num_banks(struct ath10k *ar)
1887 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1889 switch (ar_pci->pdev->device) {
1890 case QCA988X_2_0_DEVICE_ID:
1891 case QCA99X0_2_0_DEVICE_ID:
1893 case QCA6164_2_1_DEVICE_ID:
1894 case QCA6174_2_1_DEVICE_ID:
1895 switch (MS(ar->chip_id, SOC_CHIP_ID_REV)) {
1896 case QCA6174_HW_1_0_CHIP_ID_REV:
1897 case QCA6174_HW_1_1_CHIP_ID_REV:
1898 case QCA6174_HW_2_1_CHIP_ID_REV:
1899 case QCA6174_HW_2_2_CHIP_ID_REV:
1901 case QCA6174_HW_1_3_CHIP_ID_REV:
1903 case QCA6174_HW_3_0_CHIP_ID_REV:
1904 case QCA6174_HW_3_1_CHIP_ID_REV:
1905 case QCA6174_HW_3_2_CHIP_ID_REV:
1909 case QCA9377_1_0_DEVICE_ID:
1913 ath10k_warn(ar, "unknown number of banks, assuming 1\n");
1917 static int ath10k_bus_get_num_banks(struct ath10k *ar)
1919 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1921 return ar_pci->bus_ops->get_num_banks(ar);
1924 int ath10k_pci_init_config(struct ath10k *ar)
1926 u32 interconnect_targ_addr;
1927 u32 pcie_state_targ_addr = 0;
1928 u32 pipe_cfg_targ_addr = 0;
1929 u32 svc_to_pipe_map = 0;
1930 u32 pcie_config_flags = 0;
1932 u32 ealloc_targ_addr;
1934 u32 flag2_targ_addr;
1937 /* Download to Target the CE Config and the service-to-CE map */
1938 interconnect_targ_addr =
1939 host_interest_item_address(HI_ITEM(hi_interconnect_state));
1941 /* Supply Target-side CE configuration */
1942 ret = ath10k_pci_diag_read32(ar, interconnect_targ_addr,
1943 &pcie_state_targ_addr);
1945 ath10k_err(ar, "Failed to get pcie state addr: %d\n", ret);
1949 if (pcie_state_targ_addr == 0) {
1951 ath10k_err(ar, "Invalid pcie state addr\n");
1955 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
1956 offsetof(struct pcie_state,
1958 &pipe_cfg_targ_addr);
1960 ath10k_err(ar, "Failed to get pipe cfg addr: %d\n", ret);
1964 if (pipe_cfg_targ_addr == 0) {
1966 ath10k_err(ar, "Invalid pipe cfg addr\n");
1970 ret = ath10k_pci_diag_write_mem(ar, pipe_cfg_targ_addr,
1971 target_ce_config_wlan,
1972 sizeof(struct ce_pipe_config) *
1973 NUM_TARGET_CE_CONFIG_WLAN);
1976 ath10k_err(ar, "Failed to write pipe cfg: %d\n", ret);
1980 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
1981 offsetof(struct pcie_state,
1985 ath10k_err(ar, "Failed to get svc/pipe map: %d\n", ret);
1989 if (svc_to_pipe_map == 0) {
1991 ath10k_err(ar, "Invalid svc_to_pipe map\n");
1995 ret = ath10k_pci_diag_write_mem(ar, svc_to_pipe_map,
1996 target_service_to_ce_map_wlan,
1997 sizeof(target_service_to_ce_map_wlan));
1999 ath10k_err(ar, "Failed to write svc/pipe map: %d\n", ret);
2003 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
2004 offsetof(struct pcie_state,
2006 &pcie_config_flags);
2008 ath10k_err(ar, "Failed to get pcie config_flags: %d\n", ret);
2012 pcie_config_flags &= ~PCIE_CONFIG_FLAG_ENABLE_L1;
2014 ret = ath10k_pci_diag_write32(ar, (pcie_state_targ_addr +
2015 offsetof(struct pcie_state,
2019 ath10k_err(ar, "Failed to write pcie config_flags: %d\n", ret);
2023 /* configure early allocation */
2024 ealloc_targ_addr = host_interest_item_address(HI_ITEM(hi_early_alloc));
2026 ret = ath10k_pci_diag_read32(ar, ealloc_targ_addr, &ealloc_value);
2028 ath10k_err(ar, "Faile to get early alloc val: %d\n", ret);
2032 /* first bank is switched to IRAM */
2033 ealloc_value |= ((HI_EARLY_ALLOC_MAGIC << HI_EARLY_ALLOC_MAGIC_SHIFT) &
2034 HI_EARLY_ALLOC_MAGIC_MASK);
2035 ealloc_value |= ((ath10k_bus_get_num_banks(ar) <<
2036 HI_EARLY_ALLOC_IRAM_BANKS_SHIFT) &
2037 HI_EARLY_ALLOC_IRAM_BANKS_MASK);
2039 ret = ath10k_pci_diag_write32(ar, ealloc_targ_addr, ealloc_value);
2041 ath10k_err(ar, "Failed to set early alloc val: %d\n", ret);
2045 /* Tell Target to proceed with initialization */
2046 flag2_targ_addr = host_interest_item_address(HI_ITEM(hi_option_flag2));
2048 ret = ath10k_pci_diag_read32(ar, flag2_targ_addr, &flag2_value);
2050 ath10k_err(ar, "Failed to get option val: %d\n", ret);
2054 flag2_value |= HI_OPTION_EARLY_CFG_DONE;
2056 ret = ath10k_pci_diag_write32(ar, flag2_targ_addr, flag2_value);
2058 ath10k_err(ar, "Failed to set option val: %d\n", ret);
2065 static void ath10k_pci_override_ce_config(struct ath10k *ar)
2067 struct ce_attr *attr;
2068 struct ce_pipe_config *config;
2070 /* For QCA6174 we're overriding the Copy Engine 5 configuration,
2071 * since it is currently used for other feature.
2074 /* Override Host's Copy Engine 5 configuration */
2075 attr = &host_ce_config_wlan[5];
2076 attr->src_sz_max = 0;
2077 attr->dest_nentries = 0;
2079 /* Override Target firmware's Copy Engine configuration */
2080 config = &target_ce_config_wlan[5];
2081 config->pipedir = __cpu_to_le32(PIPEDIR_OUT);
2082 config->nbytes_max = __cpu_to_le32(2048);
2084 /* Map from service/endpoint to Copy Engine */
2085 target_service_to_ce_map_wlan[15].pipenum = __cpu_to_le32(1);
2088 int ath10k_pci_alloc_pipes(struct ath10k *ar)
2090 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2091 struct ath10k_pci_pipe *pipe;
2094 for (i = 0; i < CE_COUNT; i++) {
2095 pipe = &ar_pci->pipe_info[i];
2096 pipe->ce_hdl = &ar_pci->ce_states[i];
2098 pipe->hif_ce_state = ar;
2100 ret = ath10k_ce_alloc_pipe(ar, i, &host_ce_config_wlan[i]);
2102 ath10k_err(ar, "failed to allocate copy engine pipe %d: %d\n",
2107 /* Last CE is Diagnostic Window */
2108 if (i == CE_DIAG_PIPE) {
2109 ar_pci->ce_diag = pipe->ce_hdl;
2113 pipe->buf_sz = (size_t)(host_ce_config_wlan[i].src_sz_max);
2119 void ath10k_pci_free_pipes(struct ath10k *ar)
2123 for (i = 0; i < CE_COUNT; i++)
2124 ath10k_ce_free_pipe(ar, i);
2127 int ath10k_pci_init_pipes(struct ath10k *ar)
2131 for (i = 0; i < CE_COUNT; i++) {
2132 ret = ath10k_ce_init_pipe(ar, i, &host_ce_config_wlan[i]);
2134 ath10k_err(ar, "failed to initialize copy engine pipe %d: %d\n",
2143 static bool ath10k_pci_has_fw_crashed(struct ath10k *ar)
2145 return ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS) &
2146 FW_IND_EVENT_PENDING;
2149 static void ath10k_pci_fw_crashed_clear(struct ath10k *ar)
2153 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS);
2154 val &= ~FW_IND_EVENT_PENDING;
2155 ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, val);
2158 /* this function effectively clears target memory controller assert line */
2159 static void ath10k_pci_warm_reset_si0(struct ath10k *ar)
2163 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2164 ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS,
2165 val | SOC_RESET_CONTROL_SI0_RST_MASK);
2166 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2170 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2171 ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS,
2172 val & ~SOC_RESET_CONTROL_SI0_RST_MASK);
2173 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2178 static void ath10k_pci_warm_reset_cpu(struct ath10k *ar)
2182 ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, 0);
2184 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
2185 SOC_RESET_CONTROL_ADDRESS);
2186 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
2187 val | SOC_RESET_CONTROL_CPU_WARM_RST_MASK);
2190 static void ath10k_pci_warm_reset_ce(struct ath10k *ar)
2194 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
2195 SOC_RESET_CONTROL_ADDRESS);
2197 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
2198 val | SOC_RESET_CONTROL_CE_RST_MASK);
2200 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
2201 val & ~SOC_RESET_CONTROL_CE_RST_MASK);
2204 static void ath10k_pci_warm_reset_clear_lf(struct ath10k *ar)
2208 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
2209 SOC_LF_TIMER_CONTROL0_ADDRESS);
2210 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS +
2211 SOC_LF_TIMER_CONTROL0_ADDRESS,
2212 val & ~SOC_LF_TIMER_CONTROL0_ENABLE_MASK);
2215 static int ath10k_pci_warm_reset(struct ath10k *ar)
2219 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot warm reset\n");
2221 spin_lock_bh(&ar->data_lock);
2222 ar->stats.fw_warm_reset_counter++;
2223 spin_unlock_bh(&ar->data_lock);
2225 ath10k_pci_irq_disable(ar);
2227 /* Make sure the target CPU is not doing anything dangerous, e.g. if it
2228 * were to access copy engine while host performs copy engine reset
2229 * then it is possible for the device to confuse pci-e controller to
2230 * the point of bringing host system to a complete stop (i.e. hang).
2232 ath10k_pci_warm_reset_si0(ar);
2233 ath10k_pci_warm_reset_cpu(ar);
2234 ath10k_pci_init_pipes(ar);
2235 ath10k_pci_wait_for_target_init(ar);
2237 ath10k_pci_warm_reset_clear_lf(ar);
2238 ath10k_pci_warm_reset_ce(ar);
2239 ath10k_pci_warm_reset_cpu(ar);
2240 ath10k_pci_init_pipes(ar);
2242 ret = ath10k_pci_wait_for_target_init(ar);
2244 ath10k_warn(ar, "failed to wait for target init: %d\n", ret);
2248 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot warm reset complete\n");
2253 static int ath10k_pci_safe_chip_reset(struct ath10k *ar)
2255 if (QCA_REV_988X(ar) || QCA_REV_6174(ar)) {
2256 return ath10k_pci_warm_reset(ar);
2257 } else if (QCA_REV_99X0(ar)) {
2258 ath10k_pci_irq_disable(ar);
2259 return ath10k_pci_qca99x0_chip_reset(ar);
2265 static int ath10k_pci_qca988x_chip_reset(struct ath10k *ar)
2270 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot 988x chip reset\n");
2272 /* Some hardware revisions (e.g. CUS223v2) has issues with cold reset.
2273 * It is thus preferred to use warm reset which is safer but may not be
2274 * able to recover the device from all possible fail scenarios.
2276 * Warm reset doesn't always work on first try so attempt it a few
2277 * times before giving up.
2279 for (i = 0; i < ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS; i++) {
2280 ret = ath10k_pci_warm_reset(ar);
2282 ath10k_warn(ar, "failed to warm reset attempt %d of %d: %d\n",
2283 i + 1, ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS,
2288 /* FIXME: Sometimes copy engine doesn't recover after warm
2289 * reset. In most cases this needs cold reset. In some of these
2290 * cases the device is in such a state that a cold reset may
2293 * Reading any host interest register via copy engine is
2294 * sufficient to verify if device is capable of booting
2297 ret = ath10k_pci_init_pipes(ar);
2299 ath10k_warn(ar, "failed to init copy engine: %d\n",
2304 ret = ath10k_pci_diag_read32(ar, QCA988X_HOST_INTEREST_ADDRESS,
2307 ath10k_warn(ar, "failed to poke copy engine: %d\n",
2312 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot chip reset complete (warm)\n");
2316 if (ath10k_pci_reset_mode == ATH10K_PCI_RESET_WARM_ONLY) {
2317 ath10k_warn(ar, "refusing cold reset as requested\n");
2321 ret = ath10k_pci_cold_reset(ar);
2323 ath10k_warn(ar, "failed to cold reset: %d\n", ret);
2327 ret = ath10k_pci_wait_for_target_init(ar);
2329 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n",
2334 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca988x chip reset complete (cold)\n");
2339 static int ath10k_pci_qca6174_chip_reset(struct ath10k *ar)
2343 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca6174 chip reset\n");
2345 /* FIXME: QCA6174 requires cold + warm reset to work. */
2347 ret = ath10k_pci_cold_reset(ar);
2349 ath10k_warn(ar, "failed to cold reset: %d\n", ret);
2353 ret = ath10k_pci_wait_for_target_init(ar);
2355 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n",
2360 ret = ath10k_pci_warm_reset(ar);
2362 ath10k_warn(ar, "failed to warm reset: %d\n", ret);
2366 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca6174 chip reset complete (cold)\n");
2371 static int ath10k_pci_qca99x0_chip_reset(struct ath10k *ar)
2375 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca99x0 chip reset\n");
2377 ret = ath10k_pci_cold_reset(ar);
2379 ath10k_warn(ar, "failed to cold reset: %d\n", ret);
2383 ret = ath10k_pci_wait_for_target_init(ar);
2385 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n",
2390 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca99x0 chip reset complete (cold)\n");
2395 static int ath10k_pci_chip_reset(struct ath10k *ar)
2397 if (QCA_REV_988X(ar))
2398 return ath10k_pci_qca988x_chip_reset(ar);
2399 else if (QCA_REV_6174(ar))
2400 return ath10k_pci_qca6174_chip_reset(ar);
2401 else if (QCA_REV_9377(ar))
2402 return ath10k_pci_qca6174_chip_reset(ar);
2403 else if (QCA_REV_99X0(ar))
2404 return ath10k_pci_qca99x0_chip_reset(ar);
2409 static int ath10k_pci_hif_power_up(struct ath10k *ar)
2411 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2414 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif power up\n");
2416 pcie_capability_read_word(ar_pci->pdev, PCI_EXP_LNKCTL,
2418 pcie_capability_write_word(ar_pci->pdev, PCI_EXP_LNKCTL,
2419 ar_pci->link_ctl & ~PCI_EXP_LNKCTL_ASPMC);
2422 * Bring the target up cleanly.
2424 * The target may be in an undefined state with an AUX-powered Target
2425 * and a Host in WoW mode. If the Host crashes, loses power, or is
2426 * restarted (without unloading the driver) then the Target is left
2427 * (aux) powered and running. On a subsequent driver load, the Target
2428 * is in an unexpected state. We try to catch that here in order to
2429 * reset the Target and retry the probe.
2431 ret = ath10k_pci_chip_reset(ar);
2433 if (ath10k_pci_has_fw_crashed(ar)) {
2434 ath10k_warn(ar, "firmware crashed during chip reset\n");
2435 ath10k_pci_fw_crashed_clear(ar);
2436 ath10k_pci_fw_crashed_dump(ar);
2439 ath10k_err(ar, "failed to reset chip: %d\n", ret);
2443 ret = ath10k_pci_init_pipes(ar);
2445 ath10k_err(ar, "failed to initialize CE: %d\n", ret);
2449 ret = ath10k_pci_init_config(ar);
2451 ath10k_err(ar, "failed to setup init config: %d\n", ret);
2455 ret = ath10k_pci_wake_target_cpu(ar);
2457 ath10k_err(ar, "could not wake up target CPU: %d\n", ret);
2464 ath10k_pci_ce_deinit(ar);
2470 void ath10k_pci_hif_power_down(struct ath10k *ar)
2472 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif power down\n");
2474 /* Currently hif_power_up performs effectively a reset and hif_stop
2475 * resets the chip as well so there's no point in resetting here.
2481 static int ath10k_pci_hif_suspend(struct ath10k *ar)
2483 /* The grace timer can still be counting down and ar->ps_awake be true.
2484 * It is known that the device may be asleep after resuming regardless
2485 * of the SoC powersave state before suspending. Hence make sure the
2486 * device is asleep before proceeding.
2488 ath10k_pci_sleep_sync(ar);
2493 static int ath10k_pci_hif_resume(struct ath10k *ar)
2495 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2496 struct pci_dev *pdev = ar_pci->pdev;
2500 ret = ath10k_pci_force_wake(ar);
2502 ath10k_err(ar, "failed to wake up target: %d\n", ret);
2506 /* Suspend/Resume resets the PCI configuration space, so we have to
2507 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
2508 * from interfering with C3 CPU state. pci_restore_state won't help
2509 * here since it only restores the first 64 bytes pci config header.
2511 pci_read_config_dword(pdev, 0x40, &val);
2512 if ((val & 0x0000ff00) != 0)
2513 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
2519 static const struct ath10k_hif_ops ath10k_pci_hif_ops = {
2520 .tx_sg = ath10k_pci_hif_tx_sg,
2521 .diag_read = ath10k_pci_hif_diag_read,
2522 .diag_write = ath10k_pci_diag_write_mem,
2523 .exchange_bmi_msg = ath10k_pci_hif_exchange_bmi_msg,
2524 .start = ath10k_pci_hif_start,
2525 .stop = ath10k_pci_hif_stop,
2526 .map_service_to_pipe = ath10k_pci_hif_map_service_to_pipe,
2527 .get_default_pipe = ath10k_pci_hif_get_default_pipe,
2528 .send_complete_check = ath10k_pci_hif_send_complete_check,
2529 .get_free_queue_number = ath10k_pci_hif_get_free_queue_number,
2530 .power_up = ath10k_pci_hif_power_up,
2531 .power_down = ath10k_pci_hif_power_down,
2532 .read32 = ath10k_pci_read32,
2533 .write32 = ath10k_pci_write32,
2535 .suspend = ath10k_pci_hif_suspend,
2536 .resume = ath10k_pci_hif_resume,
2540 static void ath10k_pci_ce_tasklet(unsigned long ptr)
2542 struct ath10k_pci_pipe *pipe = (struct ath10k_pci_pipe *)ptr;
2543 struct ath10k_pci *ar_pci = pipe->ar_pci;
2545 ath10k_ce_per_engine_service(ar_pci->ar, pipe->pipe_num);
2548 static void ath10k_msi_err_tasklet(unsigned long data)
2550 struct ath10k *ar = (struct ath10k *)data;
2552 if (!ath10k_pci_has_fw_crashed(ar)) {
2553 ath10k_warn(ar, "received unsolicited fw crash interrupt\n");
2557 ath10k_pci_irq_disable(ar);
2558 ath10k_pci_fw_crashed_clear(ar);
2559 ath10k_pci_fw_crashed_dump(ar);
2563 * Handler for a per-engine interrupt on a PARTICULAR CE.
2564 * This is used in cases where each CE has a private MSI interrupt.
2566 static irqreturn_t ath10k_pci_per_engine_handler(int irq, void *arg)
2568 struct ath10k *ar = arg;
2569 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2570 int ce_id = irq - ar_pci->pdev->irq - MSI_ASSIGN_CE_INITIAL;
2572 if (ce_id < 0 || ce_id >= ARRAY_SIZE(ar_pci->pipe_info)) {
2573 ath10k_warn(ar, "unexpected/invalid irq %d ce_id %d\n", irq,
2579 * NOTE: We are able to derive ce_id from irq because we
2580 * use a one-to-one mapping for CE's 0..5.
2581 * CE's 6 & 7 do not use interrupts at all.
2583 * This mapping must be kept in sync with the mapping
2586 tasklet_schedule(&ar_pci->pipe_info[ce_id].intr);
2590 static irqreturn_t ath10k_pci_msi_fw_handler(int irq, void *arg)
2592 struct ath10k *ar = arg;
2593 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2595 tasklet_schedule(&ar_pci->msi_fw_err);
2600 * Top-level interrupt handler for all PCI interrupts from a Target.
2601 * When a block of MSI interrupts is allocated, this top-level handler
2602 * is not used; instead, we directly call the correct sub-handler.
2604 static irqreturn_t ath10k_pci_interrupt_handler(int irq, void *arg)
2606 struct ath10k *ar = arg;
2607 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2610 ret = ath10k_pci_force_wake(ar);
2612 ath10k_warn(ar, "failed to wake device up on irq: %d\n", ret);
2616 if (ar_pci->num_msi_intrs == 0) {
2617 if (!ath10k_pci_irq_pending(ar))
2620 ath10k_pci_disable_and_clear_legacy_irq(ar);
2623 tasklet_schedule(&ar_pci->intr_tq);
2628 static void ath10k_pci_tasklet(unsigned long data)
2630 struct ath10k *ar = (struct ath10k *)data;
2631 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2633 if (ath10k_pci_has_fw_crashed(ar)) {
2634 ath10k_pci_irq_disable(ar);
2635 ath10k_pci_fw_crashed_clear(ar);
2636 ath10k_pci_fw_crashed_dump(ar);
2640 ath10k_ce_per_engine_service_any(ar);
2642 /* Re-enable legacy irq that was disabled in the irq handler */
2643 if (ar_pci->num_msi_intrs == 0)
2644 ath10k_pci_enable_legacy_irq(ar);
2647 static int ath10k_pci_request_irq_msix(struct ath10k *ar)
2649 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2652 ret = request_irq(ar_pci->pdev->irq + MSI_ASSIGN_FW,
2653 ath10k_pci_msi_fw_handler,
2654 IRQF_SHARED, "ath10k_pci", ar);
2656 ath10k_warn(ar, "failed to request MSI-X fw irq %d: %d\n",
2657 ar_pci->pdev->irq + MSI_ASSIGN_FW, ret);
2661 for (i = MSI_ASSIGN_CE_INITIAL; i <= MSI_ASSIGN_CE_MAX; i++) {
2662 ret = request_irq(ar_pci->pdev->irq + i,
2663 ath10k_pci_per_engine_handler,
2664 IRQF_SHARED, "ath10k_pci", ar);
2666 ath10k_warn(ar, "failed to request MSI-X ce irq %d: %d\n",
2667 ar_pci->pdev->irq + i, ret);
2669 for (i--; i >= MSI_ASSIGN_CE_INITIAL; i--)
2670 free_irq(ar_pci->pdev->irq + i, ar);
2672 free_irq(ar_pci->pdev->irq + MSI_ASSIGN_FW, ar);
2680 static int ath10k_pci_request_irq_msi(struct ath10k *ar)
2682 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2685 ret = request_irq(ar_pci->pdev->irq,
2686 ath10k_pci_interrupt_handler,
2687 IRQF_SHARED, "ath10k_pci", ar);
2689 ath10k_warn(ar, "failed to request MSI irq %d: %d\n",
2690 ar_pci->pdev->irq, ret);
2697 static int ath10k_pci_request_irq_legacy(struct ath10k *ar)
2699 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2702 ret = request_irq(ar_pci->pdev->irq,
2703 ath10k_pci_interrupt_handler,
2704 IRQF_SHARED, "ath10k_pci", ar);
2706 ath10k_warn(ar, "failed to request legacy irq %d: %d\n",
2707 ar_pci->pdev->irq, ret);
2714 static int ath10k_pci_request_irq(struct ath10k *ar)
2716 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2718 switch (ar_pci->num_msi_intrs) {
2720 return ath10k_pci_request_irq_legacy(ar);
2722 return ath10k_pci_request_irq_msi(ar);
2724 return ath10k_pci_request_irq_msix(ar);
2728 static void ath10k_pci_free_irq(struct ath10k *ar)
2730 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2733 /* There's at least one interrupt irregardless whether its legacy INTR
2734 * or MSI or MSI-X */
2735 for (i = 0; i < max(1, ar_pci->num_msi_intrs); i++)
2736 free_irq(ar_pci->pdev->irq + i, ar);
2739 void ath10k_pci_init_irq_tasklets(struct ath10k *ar)
2741 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2744 tasklet_init(&ar_pci->intr_tq, ath10k_pci_tasklet, (unsigned long)ar);
2745 tasklet_init(&ar_pci->msi_fw_err, ath10k_msi_err_tasklet,
2748 for (i = 0; i < CE_COUNT; i++) {
2749 ar_pci->pipe_info[i].ar_pci = ar_pci;
2750 tasklet_init(&ar_pci->pipe_info[i].intr, ath10k_pci_ce_tasklet,
2751 (unsigned long)&ar_pci->pipe_info[i]);
2755 static int ath10k_pci_init_irq(struct ath10k *ar)
2757 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2760 ath10k_pci_init_irq_tasklets(ar);
2762 if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_AUTO)
2763 ath10k_info(ar, "limiting irq mode to: %d\n",
2764 ath10k_pci_irq_mode);
2767 if (ath10k_pci_irq_mode == ATH10K_PCI_IRQ_AUTO) {
2768 ar_pci->num_msi_intrs = MSI_ASSIGN_CE_MAX + 1;
2769 ret = pci_enable_msi_range(ar_pci->pdev, ar_pci->num_msi_intrs,
2770 ar_pci->num_msi_intrs);
2778 if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_LEGACY) {
2779 ar_pci->num_msi_intrs = 1;
2780 ret = pci_enable_msi(ar_pci->pdev);
2789 * A potential race occurs here: The CORE_BASE write
2790 * depends on target correctly decoding AXI address but
2791 * host won't know when target writes BAR to CORE_CTRL.
2792 * This write might get lost if target has NOT written BAR.
2793 * For now, fix the race by repeating the write in below
2794 * synchronization checking. */
2795 ar_pci->num_msi_intrs = 0;
2797 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
2798 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
2803 static void ath10k_pci_deinit_irq_legacy(struct ath10k *ar)
2805 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
2809 static int ath10k_pci_deinit_irq(struct ath10k *ar)
2811 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2813 switch (ar_pci->num_msi_intrs) {
2815 ath10k_pci_deinit_irq_legacy(ar);
2818 pci_disable_msi(ar_pci->pdev);
2825 int ath10k_pci_wait_for_target_init(struct ath10k *ar)
2827 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2828 unsigned long timeout;
2831 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot waiting target to initialise\n");
2833 timeout = jiffies + msecs_to_jiffies(ATH10K_PCI_TARGET_WAIT);
2836 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS);
2838 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot target indicator %x\n",
2841 /* target should never return this */
2842 if (val == 0xffffffff)
2845 /* the device has crashed so don't bother trying anymore */
2846 if (val & FW_IND_EVENT_PENDING)
2849 if (val & FW_IND_INITIALIZED)
2852 if (ar_pci->num_msi_intrs == 0)
2853 /* Fix potential race by repeating CORE_BASE writes */
2854 ath10k_pci_enable_legacy_irq(ar);
2857 } while (time_before(jiffies, timeout));
2859 ath10k_pci_disable_and_clear_legacy_irq(ar);
2860 ath10k_pci_irq_msi_fw_mask(ar);
2862 if (val == 0xffffffff) {
2863 ath10k_err(ar, "failed to read device register, device is gone\n");
2867 if (val & FW_IND_EVENT_PENDING) {
2868 ath10k_warn(ar, "device has crashed during init\n");
2872 if (!(val & FW_IND_INITIALIZED)) {
2873 ath10k_err(ar, "failed to receive initialized event from target: %08x\n",
2878 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot target initialised\n");
2882 static int ath10k_pci_cold_reset(struct ath10k *ar)
2886 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cold reset\n");
2888 spin_lock_bh(&ar->data_lock);
2890 ar->stats.fw_cold_reset_counter++;
2892 spin_unlock_bh(&ar->data_lock);
2894 /* Put Target, including PCIe, into RESET. */
2895 val = ath10k_pci_reg_read32(ar, SOC_GLOBAL_RESET_ADDRESS);
2897 ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val);
2899 /* After writing into SOC_GLOBAL_RESET to put device into
2900 * reset and pulling out of reset pcie may not be stable
2901 * for any immediate pcie register access and cause bus error,
2902 * add delay before any pcie access request to fix this issue.
2906 /* Pull Target, including PCIe, out of RESET. */
2908 ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val);
2912 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cold reset complete\n");
2917 static int ath10k_pci_claim(struct ath10k *ar)
2919 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2920 struct pci_dev *pdev = ar_pci->pdev;
2923 pci_set_drvdata(pdev, ar);
2925 ret = pci_enable_device(pdev);
2927 ath10k_err(ar, "failed to enable pci device: %d\n", ret);
2931 ret = pci_request_region(pdev, BAR_NUM, "ath");
2933 ath10k_err(ar, "failed to request region BAR%d: %d\n", BAR_NUM,
2938 /* Target expects 32 bit DMA. Enforce it. */
2939 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2941 ath10k_err(ar, "failed to set dma mask to 32-bit: %d\n", ret);
2945 ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2947 ath10k_err(ar, "failed to set consistent dma mask to 32-bit: %d\n",
2952 pci_set_master(pdev);
2954 /* Arrange for access to Target SoC registers. */
2955 ar_pci->mem_len = pci_resource_len(pdev, BAR_NUM);
2956 ar_pci->mem = pci_iomap(pdev, BAR_NUM, 0);
2958 ath10k_err(ar, "failed to iomap BAR%d\n", BAR_NUM);
2963 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot pci_mem 0x%p\n", ar_pci->mem);
2967 pci_clear_master(pdev);
2970 pci_release_region(pdev, BAR_NUM);
2973 pci_disable_device(pdev);
2978 static void ath10k_pci_release(struct ath10k *ar)
2980 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2981 struct pci_dev *pdev = ar_pci->pdev;
2983 pci_iounmap(pdev, ar_pci->mem);
2984 pci_release_region(pdev, BAR_NUM);
2985 pci_clear_master(pdev);
2986 pci_disable_device(pdev);
2989 static bool ath10k_pci_chip_is_supported(u32 dev_id, u32 chip_id)
2991 const struct ath10k_pci_supp_chip *supp_chip;
2993 u32 rev_id = MS(chip_id, SOC_CHIP_ID_REV);
2995 for (i = 0; i < ARRAY_SIZE(ath10k_pci_supp_chips); i++) {
2996 supp_chip = &ath10k_pci_supp_chips[i];
2998 if (supp_chip->dev_id == dev_id &&
2999 supp_chip->rev_id == rev_id)
3006 int ath10k_pci_setup_resource(struct ath10k *ar)
3008 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3011 spin_lock_init(&ar_pci->ce_lock);
3012 spin_lock_init(&ar_pci->ps_lock);
3014 setup_timer(&ar_pci->rx_post_retry, ath10k_pci_rx_replenish_retry,
3017 if (QCA_REV_6174(ar))
3018 ath10k_pci_override_ce_config(ar);
3020 ret = ath10k_pci_alloc_pipes(ar);
3022 ath10k_err(ar, "failed to allocate copy engine pipes: %d\n",
3030 void ath10k_pci_release_resource(struct ath10k *ar)
3032 ath10k_pci_kill_tasklet(ar);
3033 ath10k_pci_ce_deinit(ar);
3034 ath10k_pci_free_pipes(ar);
3037 static const struct ath10k_bus_ops ath10k_pci_bus_ops = {
3038 .read32 = ath10k_bus_pci_read32,
3039 .write32 = ath10k_bus_pci_write32,
3040 .get_num_banks = ath10k_pci_get_num_banks,
3043 static int ath10k_pci_probe(struct pci_dev *pdev,
3044 const struct pci_device_id *pci_dev)
3048 struct ath10k_pci *ar_pci;
3049 enum ath10k_hw_rev hw_rev;
3053 switch (pci_dev->device) {
3054 case QCA988X_2_0_DEVICE_ID:
3055 hw_rev = ATH10K_HW_QCA988X;
3058 case QCA6164_2_1_DEVICE_ID:
3059 case QCA6174_2_1_DEVICE_ID:
3060 hw_rev = ATH10K_HW_QCA6174;
3063 case QCA99X0_2_0_DEVICE_ID:
3064 hw_rev = ATH10K_HW_QCA99X0;
3067 case QCA9377_1_0_DEVICE_ID:
3068 hw_rev = ATH10K_HW_QCA9377;
3076 ar = ath10k_core_create(sizeof(*ar_pci), &pdev->dev, ATH10K_BUS_PCI,
3077 hw_rev, &ath10k_pci_hif_ops);
3079 dev_err(&pdev->dev, "failed to allocate core\n");
3083 ath10k_dbg(ar, ATH10K_DBG_BOOT, "pci probe %04x:%04x %04x:%04x\n",
3084 pdev->vendor, pdev->device,
3085 pdev->subsystem_vendor, pdev->subsystem_device);
3087 ar_pci = ath10k_pci_priv(ar);
3088 ar_pci->pdev = pdev;
3089 ar_pci->dev = &pdev->dev;
3091 ar->dev_id = pci_dev->device;
3092 ar_pci->pci_ps = pci_ps;
3093 ar_pci->bus_ops = &ath10k_pci_bus_ops;
3095 ar->id.vendor = pdev->vendor;
3096 ar->id.device = pdev->device;
3097 ar->id.subsystem_vendor = pdev->subsystem_vendor;
3098 ar->id.subsystem_device = pdev->subsystem_device;
3100 setup_timer(&ar_pci->ps_timer, ath10k_pci_ps_timer,
3103 ret = ath10k_pci_setup_resource(ar);
3105 ath10k_err(ar, "failed to setup resource: %d\n", ret);
3106 goto err_core_destroy;
3109 ret = ath10k_pci_claim(ar);
3111 ath10k_err(ar, "failed to claim device: %d\n", ret);
3112 goto err_free_pipes;
3115 ret = ath10k_pci_force_wake(ar);
3117 ath10k_warn(ar, "failed to wake up device : %d\n", ret);
3121 ath10k_pci_ce_deinit(ar);
3122 ath10k_pci_irq_disable(ar);
3124 ret = ath10k_pci_init_irq(ar);
3126 ath10k_err(ar, "failed to init irqs: %d\n", ret);
3130 ath10k_info(ar, "pci irq %s interrupts %d irq_mode %d reset_mode %d\n",
3131 ath10k_pci_get_irq_method(ar), ar_pci->num_msi_intrs,
3132 ath10k_pci_irq_mode, ath10k_pci_reset_mode);
3134 ret = ath10k_pci_request_irq(ar);
3136 ath10k_warn(ar, "failed to request irqs: %d\n", ret);
3137 goto err_deinit_irq;
3140 ret = ath10k_pci_chip_reset(ar);
3142 ath10k_err(ar, "failed to reset chip: %d\n", ret);
3146 chip_id = ath10k_pci_soc_read32(ar, SOC_CHIP_ID_ADDRESS);
3147 if (chip_id == 0xffffffff) {
3148 ath10k_err(ar, "failed to get chip id\n");
3152 if (!ath10k_pci_chip_is_supported(pdev->device, chip_id)) {
3153 ath10k_err(ar, "device %04x with chip_id %08x isn't supported\n",
3154 pdev->device, chip_id);
3158 ret = ath10k_core_register(ar, chip_id);
3160 ath10k_err(ar, "failed to register driver core: %d\n", ret);
3167 ath10k_pci_free_irq(ar);
3168 ath10k_pci_kill_tasklet(ar);
3171 ath10k_pci_deinit_irq(ar);
3174 ath10k_pci_sleep_sync(ar);
3175 ath10k_pci_release(ar);
3178 ath10k_pci_free_pipes(ar);
3181 ath10k_core_destroy(ar);
3186 static void ath10k_pci_remove(struct pci_dev *pdev)
3188 struct ath10k *ar = pci_get_drvdata(pdev);
3189 struct ath10k_pci *ar_pci;
3191 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci remove\n");
3196 ar_pci = ath10k_pci_priv(ar);
3201 ath10k_core_unregister(ar);
3202 ath10k_pci_free_irq(ar);
3203 ath10k_pci_deinit_irq(ar);
3204 ath10k_pci_release_resource(ar);
3205 ath10k_pci_sleep_sync(ar);
3206 ath10k_pci_release(ar);
3207 ath10k_core_destroy(ar);
3210 MODULE_DEVICE_TABLE(pci, ath10k_pci_id_table);
3212 static struct pci_driver ath10k_pci_driver = {
3213 .name = "ath10k_pci",
3214 .id_table = ath10k_pci_id_table,
3215 .probe = ath10k_pci_probe,
3216 .remove = ath10k_pci_remove,
3219 static int __init ath10k_pci_init(void)
3223 ret = pci_register_driver(&ath10k_pci_driver);
3225 printk(KERN_ERR "failed to register ath10k pci driver: %d\n",
3228 ret = ath10k_ahb_init();
3230 printk(KERN_ERR "ahb init failed: %d\n", ret);
3234 module_init(ath10k_pci_init);
3236 static void __exit ath10k_pci_exit(void)
3238 pci_unregister_driver(&ath10k_pci_driver);
3242 module_exit(ath10k_pci_exit);
3244 MODULE_AUTHOR("Qualcomm Atheros");
3245 MODULE_DESCRIPTION("Driver support for Atheros QCA988X PCIe devices");
3246 MODULE_LICENSE("Dual BSD/GPL");
3248 /* QCA988x 2.0 firmware files */
3249 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" QCA988X_HW_2_0_FW_FILE);
3250 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API2_FILE);
3251 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API3_FILE);
3252 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API4_FILE);
3253 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API5_FILE);
3254 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" QCA988X_HW_2_0_BOARD_DATA_FILE);
3255 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_BOARD_API2_FILE);
3257 /* QCA6174 2.1 firmware files */
3258 MODULE_FIRMWARE(QCA6174_HW_2_1_FW_DIR "/" ATH10K_FW_API4_FILE);
3259 MODULE_FIRMWARE(QCA6174_HW_2_1_FW_DIR "/" ATH10K_FW_API5_FILE);
3260 MODULE_FIRMWARE(QCA6174_HW_2_1_FW_DIR "/" QCA6174_HW_2_1_BOARD_DATA_FILE);
3261 MODULE_FIRMWARE(QCA6174_HW_2_1_FW_DIR "/" ATH10K_BOARD_API2_FILE);
3263 /* QCA6174 3.1 firmware files */
3264 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" ATH10K_FW_API4_FILE);
3265 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" ATH10K_FW_API5_FILE);
3266 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" QCA6174_HW_3_0_BOARD_DATA_FILE);
3267 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" ATH10K_BOARD_API2_FILE);
3269 /* QCA9377 1.0 firmware files */
3270 MODULE_FIRMWARE(QCA9377_HW_1_0_FW_DIR "/" ATH10K_FW_API5_FILE);
3271 MODULE_FIRMWARE(QCA9377_HW_1_0_FW_DIR "/" QCA9377_HW_1_0_BOARD_DATA_FILE);