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_reset_mode {
37 ATH10K_PCI_RESET_AUTO = 0,
38 ATH10K_PCI_RESET_WARM_ONLY = 1,
41 static unsigned int ath10k_pci_irq_mode = ATH10K_PCI_IRQ_AUTO;
42 static unsigned int ath10k_pci_reset_mode = ATH10K_PCI_RESET_AUTO;
44 module_param_named(irq_mode, ath10k_pci_irq_mode, uint, 0644);
45 MODULE_PARM_DESC(irq_mode, "0: auto, 1: legacy, 2: msi (default: 0)");
47 module_param_named(reset_mode, ath10k_pci_reset_mode, uint, 0644);
48 MODULE_PARM_DESC(reset_mode, "0: auto, 1: warm only (default: 0)");
50 /* how long wait to wait for target to initialise, in ms */
51 #define ATH10K_PCI_TARGET_WAIT 3000
52 #define ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS 3
54 static const struct pci_device_id ath10k_pci_id_table[] = {
55 { PCI_VDEVICE(ATHEROS, QCA988X_2_0_DEVICE_ID) }, /* PCI-E QCA988X V2 */
56 { PCI_VDEVICE(ATHEROS, QCA6164_2_1_DEVICE_ID) }, /* PCI-E QCA6164 V2.1 */
57 { PCI_VDEVICE(ATHEROS, QCA6174_2_1_DEVICE_ID) }, /* PCI-E QCA6174 V2.1 */
58 { PCI_VDEVICE(ATHEROS, QCA99X0_2_0_DEVICE_ID) }, /* PCI-E QCA99X0 V2 */
59 { PCI_VDEVICE(ATHEROS, QCA9888_2_0_DEVICE_ID) }, /* PCI-E QCA9888 V2 */
60 { PCI_VDEVICE(ATHEROS, QCA9984_1_0_DEVICE_ID) }, /* PCI-E QCA9984 V1 */
61 { PCI_VDEVICE(ATHEROS, QCA9377_1_0_DEVICE_ID) }, /* PCI-E QCA9377 V1 */
62 { PCI_VDEVICE(ATHEROS, QCA9887_1_0_DEVICE_ID) }, /* PCI-E QCA9887 */
66 static const struct ath10k_pci_supp_chip ath10k_pci_supp_chips[] = {
67 /* QCA988X pre 2.0 chips are not supported because they need some nasty
68 * hacks. ath10k doesn't have them and these devices crash horribly
71 { QCA988X_2_0_DEVICE_ID, QCA988X_HW_2_0_CHIP_ID_REV },
73 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_2_1_CHIP_ID_REV },
74 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_2_2_CHIP_ID_REV },
75 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_3_0_CHIP_ID_REV },
76 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_3_1_CHIP_ID_REV },
77 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_3_2_CHIP_ID_REV },
79 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_2_1_CHIP_ID_REV },
80 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_2_2_CHIP_ID_REV },
81 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_3_0_CHIP_ID_REV },
82 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_3_1_CHIP_ID_REV },
83 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_3_2_CHIP_ID_REV },
85 { QCA99X0_2_0_DEVICE_ID, QCA99X0_HW_2_0_CHIP_ID_REV },
87 { QCA9984_1_0_DEVICE_ID, QCA9984_HW_1_0_CHIP_ID_REV },
89 { QCA9888_2_0_DEVICE_ID, QCA9888_HW_2_0_CHIP_ID_REV },
91 { QCA9377_1_0_DEVICE_ID, QCA9377_HW_1_0_CHIP_ID_REV },
92 { QCA9377_1_0_DEVICE_ID, QCA9377_HW_1_1_CHIP_ID_REV },
94 { QCA9887_1_0_DEVICE_ID, QCA9887_HW_1_0_CHIP_ID_REV },
97 static void ath10k_pci_buffer_cleanup(struct ath10k *ar);
98 static int ath10k_pci_cold_reset(struct ath10k *ar);
99 static int ath10k_pci_safe_chip_reset(struct ath10k *ar);
100 static int ath10k_pci_init_irq(struct ath10k *ar);
101 static int ath10k_pci_deinit_irq(struct ath10k *ar);
102 static int ath10k_pci_request_irq(struct ath10k *ar);
103 static void ath10k_pci_free_irq(struct ath10k *ar);
104 static int ath10k_pci_bmi_wait(struct ath10k *ar,
105 struct ath10k_ce_pipe *tx_pipe,
106 struct ath10k_ce_pipe *rx_pipe,
107 struct bmi_xfer *xfer);
108 static int ath10k_pci_qca99x0_chip_reset(struct ath10k *ar);
109 static void ath10k_pci_htc_tx_cb(struct ath10k_ce_pipe *ce_state);
110 static void ath10k_pci_htc_rx_cb(struct ath10k_ce_pipe *ce_state);
111 static void ath10k_pci_htt_tx_cb(struct ath10k_ce_pipe *ce_state);
112 static void ath10k_pci_htt_rx_cb(struct ath10k_ce_pipe *ce_state);
113 static void ath10k_pci_htt_htc_rx_cb(struct ath10k_ce_pipe *ce_state);
114 static void ath10k_pci_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state);
116 static struct ce_attr host_ce_config_wlan[] = {
117 /* CE0: host->target HTC control and raw streams */
119 .flags = CE_ATTR_FLAGS,
123 .send_cb = ath10k_pci_htc_tx_cb,
126 /* CE1: target->host HTT + HTC control */
128 .flags = CE_ATTR_FLAGS,
131 .dest_nentries = 512,
132 .recv_cb = ath10k_pci_htt_htc_rx_cb,
135 /* CE2: target->host WMI */
137 .flags = CE_ATTR_FLAGS,
140 .dest_nentries = 128,
141 .recv_cb = ath10k_pci_htc_rx_cb,
144 /* CE3: host->target WMI */
146 .flags = CE_ATTR_FLAGS,
150 .send_cb = ath10k_pci_htc_tx_cb,
153 /* CE4: host->target HTT */
155 .flags = CE_ATTR_FLAGS | CE_ATTR_DIS_INTR,
156 .src_nentries = CE_HTT_H2T_MSG_SRC_NENTRIES,
159 .send_cb = ath10k_pci_htt_tx_cb,
162 /* CE5: target->host HTT (HIF->HTT) */
164 .flags = CE_ATTR_FLAGS,
167 .dest_nentries = 512,
168 .recv_cb = ath10k_pci_htt_rx_cb,
171 /* CE6: target autonomous hif_memcpy */
173 .flags = CE_ATTR_FLAGS,
179 /* CE7: ce_diag, the Diagnostic Window */
181 .flags = CE_ATTR_FLAGS,
183 .src_sz_max = DIAG_TRANSFER_LIMIT,
187 /* CE8: target->host pktlog */
189 .flags = CE_ATTR_FLAGS,
192 .dest_nentries = 128,
193 .recv_cb = ath10k_pci_pktlog_rx_cb,
196 /* CE9 target autonomous qcache memcpy */
198 .flags = CE_ATTR_FLAGS,
204 /* CE10: target autonomous hif memcpy */
206 .flags = CE_ATTR_FLAGS,
212 /* CE11: target autonomous hif memcpy */
214 .flags = CE_ATTR_FLAGS,
221 /* Target firmware's Copy Engine configuration. */
222 static struct ce_pipe_config target_ce_config_wlan[] = {
223 /* CE0: host->target HTC control and raw streams */
225 .pipenum = __cpu_to_le32(0),
226 .pipedir = __cpu_to_le32(PIPEDIR_OUT),
227 .nentries = __cpu_to_le32(32),
228 .nbytes_max = __cpu_to_le32(256),
229 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
230 .reserved = __cpu_to_le32(0),
233 /* CE1: target->host HTT + HTC control */
235 .pipenum = __cpu_to_le32(1),
236 .pipedir = __cpu_to_le32(PIPEDIR_IN),
237 .nentries = __cpu_to_le32(32),
238 .nbytes_max = __cpu_to_le32(2048),
239 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
240 .reserved = __cpu_to_le32(0),
243 /* CE2: target->host WMI */
245 .pipenum = __cpu_to_le32(2),
246 .pipedir = __cpu_to_le32(PIPEDIR_IN),
247 .nentries = __cpu_to_le32(64),
248 .nbytes_max = __cpu_to_le32(2048),
249 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
250 .reserved = __cpu_to_le32(0),
253 /* CE3: host->target WMI */
255 .pipenum = __cpu_to_le32(3),
256 .pipedir = __cpu_to_le32(PIPEDIR_OUT),
257 .nentries = __cpu_to_le32(32),
258 .nbytes_max = __cpu_to_le32(2048),
259 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
260 .reserved = __cpu_to_le32(0),
263 /* CE4: host->target HTT */
265 .pipenum = __cpu_to_le32(4),
266 .pipedir = __cpu_to_le32(PIPEDIR_OUT),
267 .nentries = __cpu_to_le32(256),
268 .nbytes_max = __cpu_to_le32(256),
269 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
270 .reserved = __cpu_to_le32(0),
273 /* NB: 50% of src nentries, since tx has 2 frags */
275 /* CE5: target->host HTT (HIF->HTT) */
277 .pipenum = __cpu_to_le32(5),
278 .pipedir = __cpu_to_le32(PIPEDIR_IN),
279 .nentries = __cpu_to_le32(32),
280 .nbytes_max = __cpu_to_le32(512),
281 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
282 .reserved = __cpu_to_le32(0),
285 /* CE6: Reserved for target autonomous hif_memcpy */
287 .pipenum = __cpu_to_le32(6),
288 .pipedir = __cpu_to_le32(PIPEDIR_INOUT),
289 .nentries = __cpu_to_le32(32),
290 .nbytes_max = __cpu_to_le32(4096),
291 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
292 .reserved = __cpu_to_le32(0),
295 /* CE7 used only by Host */
297 .pipenum = __cpu_to_le32(7),
298 .pipedir = __cpu_to_le32(PIPEDIR_INOUT),
299 .nentries = __cpu_to_le32(0),
300 .nbytes_max = __cpu_to_le32(0),
301 .flags = __cpu_to_le32(0),
302 .reserved = __cpu_to_le32(0),
305 /* CE8 target->host packtlog */
307 .pipenum = __cpu_to_le32(8),
308 .pipedir = __cpu_to_le32(PIPEDIR_IN),
309 .nentries = __cpu_to_le32(64),
310 .nbytes_max = __cpu_to_le32(2048),
311 .flags = __cpu_to_le32(CE_ATTR_FLAGS | CE_ATTR_DIS_INTR),
312 .reserved = __cpu_to_le32(0),
315 /* CE9 target autonomous qcache memcpy */
317 .pipenum = __cpu_to_le32(9),
318 .pipedir = __cpu_to_le32(PIPEDIR_INOUT),
319 .nentries = __cpu_to_le32(32),
320 .nbytes_max = __cpu_to_le32(2048),
321 .flags = __cpu_to_le32(CE_ATTR_FLAGS | CE_ATTR_DIS_INTR),
322 .reserved = __cpu_to_le32(0),
325 /* It not necessary to send target wlan configuration for CE10 & CE11
326 * as these CEs are not actively used in target.
331 * Map from service/endpoint to Copy Engine.
332 * This table is derived from the CE_PCI TABLE, above.
333 * It is passed to the Target at startup for use by firmware.
335 static struct service_to_pipe target_service_to_ce_map_wlan[] = {
337 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VO),
338 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
342 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VO),
343 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
347 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BK),
348 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
352 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BK),
353 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
357 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BE),
358 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
362 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BE),
363 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
367 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VI),
368 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
372 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VI),
373 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
377 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_CONTROL),
378 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
382 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_CONTROL),
383 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
387 __cpu_to_le32(ATH10K_HTC_SVC_ID_RSVD_CTRL),
388 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
392 __cpu_to_le32(ATH10K_HTC_SVC_ID_RSVD_CTRL),
393 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
397 __cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS),
398 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
402 __cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS),
403 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
407 __cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA_MSG),
408 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
412 __cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA_MSG),
413 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
417 /* (Additions here) */
426 static bool ath10k_pci_is_awake(struct ath10k *ar)
428 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
429 u32 val = ioread32(ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
432 return RTC_STATE_V_GET(val) == RTC_STATE_V_ON;
435 static void __ath10k_pci_wake(struct ath10k *ar)
437 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
439 lockdep_assert_held(&ar_pci->ps_lock);
441 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps wake reg refcount %lu awake %d\n",
442 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
444 iowrite32(PCIE_SOC_WAKE_V_MASK,
445 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
446 PCIE_SOC_WAKE_ADDRESS);
449 static void __ath10k_pci_sleep(struct ath10k *ar)
451 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
453 lockdep_assert_held(&ar_pci->ps_lock);
455 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps sleep reg refcount %lu awake %d\n",
456 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
458 iowrite32(PCIE_SOC_WAKE_RESET,
459 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
460 PCIE_SOC_WAKE_ADDRESS);
461 ar_pci->ps_awake = false;
464 static int ath10k_pci_wake_wait(struct ath10k *ar)
469 while (tot_delay < PCIE_WAKE_TIMEOUT) {
470 if (ath10k_pci_is_awake(ar)) {
471 if (tot_delay > PCIE_WAKE_LATE_US)
472 ath10k_warn(ar, "device wakeup took %d ms which is unusually long, otherwise it works normally.\n",
478 tot_delay += curr_delay;
487 static int ath10k_pci_force_wake(struct ath10k *ar)
489 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
496 spin_lock_irqsave(&ar_pci->ps_lock, flags);
498 if (!ar_pci->ps_awake) {
499 iowrite32(PCIE_SOC_WAKE_V_MASK,
500 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
501 PCIE_SOC_WAKE_ADDRESS);
503 ret = ath10k_pci_wake_wait(ar);
505 ar_pci->ps_awake = true;
508 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
513 static void ath10k_pci_force_sleep(struct ath10k *ar)
515 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
518 spin_lock_irqsave(&ar_pci->ps_lock, flags);
520 iowrite32(PCIE_SOC_WAKE_RESET,
521 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
522 PCIE_SOC_WAKE_ADDRESS);
523 ar_pci->ps_awake = false;
525 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
528 static int ath10k_pci_wake(struct ath10k *ar)
530 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
534 if (ar_pci->pci_ps == 0)
537 spin_lock_irqsave(&ar_pci->ps_lock, flags);
539 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps wake refcount %lu awake %d\n",
540 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
542 /* This function can be called very frequently. To avoid excessive
543 * CPU stalls for MMIO reads use a cache var to hold the device state.
545 if (!ar_pci->ps_awake) {
546 __ath10k_pci_wake(ar);
548 ret = ath10k_pci_wake_wait(ar);
550 ar_pci->ps_awake = true;
554 ar_pci->ps_wake_refcount++;
555 WARN_ON(ar_pci->ps_wake_refcount == 0);
558 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
563 static void ath10k_pci_sleep(struct ath10k *ar)
565 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
568 if (ar_pci->pci_ps == 0)
571 spin_lock_irqsave(&ar_pci->ps_lock, flags);
573 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps sleep refcount %lu awake %d\n",
574 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
576 if (WARN_ON(ar_pci->ps_wake_refcount == 0))
579 ar_pci->ps_wake_refcount--;
581 mod_timer(&ar_pci->ps_timer, jiffies +
582 msecs_to_jiffies(ATH10K_PCI_SLEEP_GRACE_PERIOD_MSEC));
585 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
588 static void ath10k_pci_ps_timer(unsigned long ptr)
590 struct ath10k *ar = (void *)ptr;
591 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
594 spin_lock_irqsave(&ar_pci->ps_lock, flags);
596 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps timer refcount %lu awake %d\n",
597 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
599 if (ar_pci->ps_wake_refcount > 0)
602 __ath10k_pci_sleep(ar);
605 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
608 static void ath10k_pci_sleep_sync(struct ath10k *ar)
610 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
613 if (ar_pci->pci_ps == 0) {
614 ath10k_pci_force_sleep(ar);
618 del_timer_sync(&ar_pci->ps_timer);
620 spin_lock_irqsave(&ar_pci->ps_lock, flags);
621 WARN_ON(ar_pci->ps_wake_refcount > 0);
622 __ath10k_pci_sleep(ar);
623 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
626 static void ath10k_bus_pci_write32(struct ath10k *ar, u32 offset, u32 value)
628 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
631 if (unlikely(offset + sizeof(value) > ar_pci->mem_len)) {
632 ath10k_warn(ar, "refusing to write mmio out of bounds at 0x%08x - 0x%08zx (max 0x%08zx)\n",
633 offset, offset + sizeof(value), ar_pci->mem_len);
637 ret = ath10k_pci_wake(ar);
639 ath10k_warn(ar, "failed to wake target for write32 of 0x%08x at 0x%08x: %d\n",
644 iowrite32(value, ar_pci->mem + offset);
645 ath10k_pci_sleep(ar);
648 static u32 ath10k_bus_pci_read32(struct ath10k *ar, u32 offset)
650 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
654 if (unlikely(offset + sizeof(val) > ar_pci->mem_len)) {
655 ath10k_warn(ar, "refusing to read mmio out of bounds at 0x%08x - 0x%08zx (max 0x%08zx)\n",
656 offset, offset + sizeof(val), ar_pci->mem_len);
660 ret = ath10k_pci_wake(ar);
662 ath10k_warn(ar, "failed to wake target for read32 at 0x%08x: %d\n",
667 val = ioread32(ar_pci->mem + offset);
668 ath10k_pci_sleep(ar);
673 inline void ath10k_pci_write32(struct ath10k *ar, u32 offset, u32 value)
675 struct ath10k_ce *ce = ath10k_ce_priv(ar);
677 ce->bus_ops->write32(ar, offset, value);
680 inline u32 ath10k_pci_read32(struct ath10k *ar, u32 offset)
682 struct ath10k_ce *ce = ath10k_ce_priv(ar);
684 return ce->bus_ops->read32(ar, offset);
687 u32 ath10k_pci_soc_read32(struct ath10k *ar, u32 addr)
689 return ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS + addr);
692 void ath10k_pci_soc_write32(struct ath10k *ar, u32 addr, u32 val)
694 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + addr, val);
697 u32 ath10k_pci_reg_read32(struct ath10k *ar, u32 addr)
699 return ath10k_pci_read32(ar, PCIE_LOCAL_BASE_ADDRESS + addr);
702 void ath10k_pci_reg_write32(struct ath10k *ar, u32 addr, u32 val)
704 ath10k_pci_write32(ar, PCIE_LOCAL_BASE_ADDRESS + addr, val);
707 bool ath10k_pci_irq_pending(struct ath10k *ar)
711 /* Check if the shared legacy irq is for us */
712 cause = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
713 PCIE_INTR_CAUSE_ADDRESS);
714 if (cause & (PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL))
720 void ath10k_pci_disable_and_clear_legacy_irq(struct ath10k *ar)
722 /* IMPORTANT: INTR_CLR register has to be set after
723 * INTR_ENABLE is set to 0, otherwise interrupt can not be
726 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
728 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_CLR_ADDRESS,
729 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
731 /* IMPORTANT: this extra read transaction is required to
732 * flush the posted write buffer.
734 (void)ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
735 PCIE_INTR_ENABLE_ADDRESS);
738 void ath10k_pci_enable_legacy_irq(struct ath10k *ar)
740 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
741 PCIE_INTR_ENABLE_ADDRESS,
742 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
744 /* IMPORTANT: this extra read transaction is required to
745 * flush the posted write buffer.
747 (void)ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
748 PCIE_INTR_ENABLE_ADDRESS);
751 static inline const char *ath10k_pci_get_irq_method(struct ath10k *ar)
753 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
755 if (ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_MSI)
761 static int __ath10k_pci_rx_post_buf(struct ath10k_pci_pipe *pipe)
763 struct ath10k *ar = pipe->hif_ce_state;
764 struct ath10k_ce *ce = ath10k_ce_priv(ar);
765 struct ath10k_ce_pipe *ce_pipe = pipe->ce_hdl;
770 skb = dev_alloc_skb(pipe->buf_sz);
774 WARN_ONCE((unsigned long)skb->data & 3, "unaligned skb");
776 paddr = dma_map_single(ar->dev, skb->data,
777 skb->len + skb_tailroom(skb),
779 if (unlikely(dma_mapping_error(ar->dev, paddr))) {
780 ath10k_warn(ar, "failed to dma map pci rx buf\n");
781 dev_kfree_skb_any(skb);
785 ATH10K_SKB_RXCB(skb)->paddr = paddr;
787 spin_lock_bh(&ce->ce_lock);
788 ret = __ath10k_ce_rx_post_buf(ce_pipe, skb, paddr);
789 spin_unlock_bh(&ce->ce_lock);
791 dma_unmap_single(ar->dev, paddr, skb->len + skb_tailroom(skb),
793 dev_kfree_skb_any(skb);
800 static void ath10k_pci_rx_post_pipe(struct ath10k_pci_pipe *pipe)
802 struct ath10k *ar = pipe->hif_ce_state;
803 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
804 struct ath10k_ce *ce = ath10k_ce_priv(ar);
805 struct ath10k_ce_pipe *ce_pipe = pipe->ce_hdl;
808 if (pipe->buf_sz == 0)
811 if (!ce_pipe->dest_ring)
814 spin_lock_bh(&ce->ce_lock);
815 num = __ath10k_ce_rx_num_free_bufs(ce_pipe);
816 spin_unlock_bh(&ce->ce_lock);
819 ret = __ath10k_pci_rx_post_buf(pipe);
823 ath10k_warn(ar, "failed to post pci rx buf: %d\n", ret);
824 mod_timer(&ar_pci->rx_post_retry, jiffies +
825 ATH10K_PCI_RX_POST_RETRY_MS);
832 void ath10k_pci_rx_post(struct ath10k *ar)
834 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
837 for (i = 0; i < CE_COUNT; i++)
838 ath10k_pci_rx_post_pipe(&ar_pci->pipe_info[i]);
841 void ath10k_pci_rx_replenish_retry(unsigned long ptr)
843 struct ath10k *ar = (void *)ptr;
845 ath10k_pci_rx_post(ar);
848 static u32 ath10k_pci_qca988x_targ_cpu_to_ce_addr(struct ath10k *ar, u32 addr)
850 u32 val = 0, region = addr & 0xfffff;
852 val = (ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + CORE_CTRL_ADDRESS)
854 val |= 0x100000 | region;
858 static u32 ath10k_pci_qca99x0_targ_cpu_to_ce_addr(struct ath10k *ar, u32 addr)
860 u32 val = 0, region = addr & 0xfffff;
862 val = ath10k_pci_read32(ar, PCIE_BAR_REG_ADDRESS);
863 val |= 0x100000 | region;
867 static u32 ath10k_pci_targ_cpu_to_ce_addr(struct ath10k *ar, u32 addr)
869 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
871 if (WARN_ON_ONCE(!ar_pci->targ_cpu_to_ce_addr))
874 return ar_pci->targ_cpu_to_ce_addr(ar, addr);
878 * Diagnostic read/write access is provided for startup/config/debug usage.
879 * Caller must guarantee proper alignment, when applicable, and single user
882 static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data,
885 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
886 struct ath10k_ce *ce = ath10k_ce_priv(ar);
889 unsigned int completed_nbytes, alloc_nbytes, remaining_bytes;
890 struct ath10k_ce_pipe *ce_diag;
891 /* Host buffer address in CE space */
893 dma_addr_t ce_data_base = 0;
894 void *data_buf = NULL;
897 spin_lock_bh(&ce->ce_lock);
899 ce_diag = ar_pci->ce_diag;
902 * Allocate a temporary bounce buffer to hold caller's data
903 * to be DMA'ed from Target. This guarantees
904 * 1) 4-byte alignment
905 * 2) Buffer in DMA-able space
907 alloc_nbytes = min_t(unsigned int, nbytes, DIAG_TRANSFER_LIMIT);
909 data_buf = (unsigned char *)dma_zalloc_coherent(ar->dev,
919 remaining_bytes = nbytes;
920 ce_data = ce_data_base;
921 while (remaining_bytes) {
922 nbytes = min_t(unsigned int, remaining_bytes,
923 DIAG_TRANSFER_LIMIT);
925 ret = __ath10k_ce_rx_post_buf(ce_diag, &ce_data, ce_data);
929 /* Request CE to send from Target(!) address to Host buffer */
931 * The address supplied by the caller is in the
932 * Target CPU virtual address space.
934 * In order to use this address with the diagnostic CE,
935 * convert it from Target CPU virtual address space
936 * to CE address space
938 address = ath10k_pci_targ_cpu_to_ce_addr(ar, address);
940 ret = ath10k_ce_send_nolock(ce_diag, NULL, (u32)address, nbytes, 0,
946 while (ath10k_ce_completed_send_next_nolock(ce_diag,
949 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
956 while (ath10k_ce_completed_recv_next_nolock(ce_diag,
962 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
968 if (nbytes != completed_nbytes) {
973 if (*buf != ce_data) {
978 remaining_bytes -= nbytes;
979 memcpy(data, data_buf, nbytes);
988 dma_free_coherent(ar->dev, alloc_nbytes, data_buf,
991 spin_unlock_bh(&ce->ce_lock);
996 static int ath10k_pci_diag_read32(struct ath10k *ar, u32 address, u32 *value)
1001 ret = ath10k_pci_diag_read_mem(ar, address, &val, sizeof(val));
1002 *value = __le32_to_cpu(val);
1007 static int __ath10k_pci_diag_read_hi(struct ath10k *ar, void *dest,
1010 u32 host_addr, addr;
1013 host_addr = host_interest_item_address(src);
1015 ret = ath10k_pci_diag_read32(ar, host_addr, &addr);
1017 ath10k_warn(ar, "failed to get memcpy hi address for firmware address %d: %d\n",
1022 ret = ath10k_pci_diag_read_mem(ar, addr, dest, len);
1024 ath10k_warn(ar, "failed to memcpy firmware memory from %d (%d B): %d\n",
1032 #define ath10k_pci_diag_read_hi(ar, dest, src, len) \
1033 __ath10k_pci_diag_read_hi(ar, dest, HI_ITEM(src), len)
1035 int ath10k_pci_diag_write_mem(struct ath10k *ar, u32 address,
1036 const void *data, int nbytes)
1038 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1039 struct ath10k_ce *ce = ath10k_ce_priv(ar);
1042 unsigned int completed_nbytes, alloc_nbytes, remaining_bytes;
1043 struct ath10k_ce_pipe *ce_diag;
1044 void *data_buf = NULL;
1045 dma_addr_t ce_data_base = 0;
1048 spin_lock_bh(&ce->ce_lock);
1050 ce_diag = ar_pci->ce_diag;
1053 * Allocate a temporary bounce buffer to hold caller's data
1054 * to be DMA'ed to Target. This guarantees
1055 * 1) 4-byte alignment
1056 * 2) Buffer in DMA-able space
1058 alloc_nbytes = min_t(unsigned int, nbytes, DIAG_TRANSFER_LIMIT);
1060 data_buf = (unsigned char *)dma_alloc_coherent(ar->dev,
1070 * The address supplied by the caller is in the
1071 * Target CPU virtual address space.
1073 * In order to use this address with the diagnostic CE,
1075 * Target CPU virtual address space
1079 address = ath10k_pci_targ_cpu_to_ce_addr(ar, address);
1081 remaining_bytes = nbytes;
1082 while (remaining_bytes) {
1083 /* FIXME: check cast */
1084 nbytes = min_t(int, remaining_bytes, DIAG_TRANSFER_LIMIT);
1086 /* Copy caller's data to allocated DMA buf */
1087 memcpy(data_buf, data, nbytes);
1089 /* Set up to receive directly into Target(!) address */
1090 ret = __ath10k_ce_rx_post_buf(ce_diag, &address, address);
1095 * Request CE to send caller-supplied data that
1096 * was copied to bounce buffer to Target(!) address.
1098 ret = ath10k_ce_send_nolock(ce_diag, NULL, ce_data_base,
1104 while (ath10k_ce_completed_send_next_nolock(ce_diag,
1108 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
1115 while (ath10k_ce_completed_recv_next_nolock(ce_diag,
1121 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
1127 if (nbytes != completed_nbytes) {
1132 if (*buf != address) {
1137 remaining_bytes -= nbytes;
1144 dma_free_coherent(ar->dev, alloc_nbytes, data_buf,
1149 ath10k_warn(ar, "failed to write diag value at 0x%x: %d\n",
1152 spin_unlock_bh(&ce->ce_lock);
1157 static int ath10k_pci_diag_write32(struct ath10k *ar, u32 address, u32 value)
1159 __le32 val = __cpu_to_le32(value);
1161 return ath10k_pci_diag_write_mem(ar, address, &val, sizeof(val));
1164 /* Called by lower (CE) layer when a send to Target completes. */
1165 static void ath10k_pci_htc_tx_cb(struct ath10k_ce_pipe *ce_state)
1167 struct ath10k *ar = ce_state->ar;
1168 struct sk_buff_head list;
1169 struct sk_buff *skb;
1171 __skb_queue_head_init(&list);
1172 while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) {
1173 /* no need to call tx completion for NULL pointers */
1177 __skb_queue_tail(&list, skb);
1180 while ((skb = __skb_dequeue(&list)))
1181 ath10k_htc_tx_completion_handler(ar, skb);
1184 static void ath10k_pci_process_rx_cb(struct ath10k_ce_pipe *ce_state,
1185 void (*callback)(struct ath10k *ar,
1186 struct sk_buff *skb))
1188 struct ath10k *ar = ce_state->ar;
1189 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1190 struct ath10k_pci_pipe *pipe_info = &ar_pci->pipe_info[ce_state->id];
1191 struct sk_buff *skb;
1192 struct sk_buff_head list;
1193 void *transfer_context;
1194 unsigned int nbytes, max_nbytes;
1196 __skb_queue_head_init(&list);
1197 while (ath10k_ce_completed_recv_next(ce_state, &transfer_context,
1199 skb = transfer_context;
1200 max_nbytes = skb->len + skb_tailroom(skb);
1201 dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1202 max_nbytes, DMA_FROM_DEVICE);
1204 if (unlikely(max_nbytes < nbytes)) {
1205 ath10k_warn(ar, "rxed more than expected (nbytes %d, max %d)",
1206 nbytes, max_nbytes);
1207 dev_kfree_skb_any(skb);
1211 skb_put(skb, nbytes);
1212 __skb_queue_tail(&list, skb);
1215 while ((skb = __skb_dequeue(&list))) {
1216 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci rx ce pipe %d len %d\n",
1217 ce_state->id, skb->len);
1218 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci rx: ",
1219 skb->data, skb->len);
1224 ath10k_pci_rx_post_pipe(pipe_info);
1227 static void ath10k_pci_process_htt_rx_cb(struct ath10k_ce_pipe *ce_state,
1228 void (*callback)(struct ath10k *ar,
1229 struct sk_buff *skb))
1231 struct ath10k *ar = ce_state->ar;
1232 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1233 struct ath10k_pci_pipe *pipe_info = &ar_pci->pipe_info[ce_state->id];
1234 struct ath10k_ce_pipe *ce_pipe = pipe_info->ce_hdl;
1235 struct sk_buff *skb;
1236 struct sk_buff_head list;
1237 void *transfer_context;
1238 unsigned int nbytes, max_nbytes, nentries;
1241 /* No need to aquire ce_lock for CE5, since this is the only place CE5
1242 * is processed other than init and deinit. Before releasing CE5
1243 * buffers, interrupts are disabled. Thus CE5 access is serialized.
1245 __skb_queue_head_init(&list);
1246 while (ath10k_ce_completed_recv_next_nolock(ce_state, &transfer_context,
1248 skb = transfer_context;
1249 max_nbytes = skb->len + skb_tailroom(skb);
1251 if (unlikely(max_nbytes < nbytes)) {
1252 ath10k_warn(ar, "rxed more than expected (nbytes %d, max %d)",
1253 nbytes, max_nbytes);
1257 dma_sync_single_for_cpu(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1258 max_nbytes, DMA_FROM_DEVICE);
1259 skb_put(skb, nbytes);
1260 __skb_queue_tail(&list, skb);
1263 nentries = skb_queue_len(&list);
1264 while ((skb = __skb_dequeue(&list))) {
1265 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci rx ce pipe %d len %d\n",
1266 ce_state->id, skb->len);
1267 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci rx: ",
1268 skb->data, skb->len);
1270 orig_len = skb->len;
1272 skb_push(skb, orig_len - skb->len);
1273 skb_reset_tail_pointer(skb);
1276 /*let device gain the buffer again*/
1277 dma_sync_single_for_device(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1278 skb->len + skb_tailroom(skb),
1281 ath10k_ce_rx_update_write_idx(ce_pipe, nentries);
1284 /* Called by lower (CE) layer when data is received from the Target. */
1285 static void ath10k_pci_htc_rx_cb(struct ath10k_ce_pipe *ce_state)
1287 ath10k_pci_process_rx_cb(ce_state, ath10k_htc_rx_completion_handler);
1290 static void ath10k_pci_htt_htc_rx_cb(struct ath10k_ce_pipe *ce_state)
1292 /* CE4 polling needs to be done whenever CE pipe which transports
1293 * HTT Rx (target->host) is processed.
1295 ath10k_ce_per_engine_service(ce_state->ar, 4);
1297 ath10k_pci_process_rx_cb(ce_state, ath10k_htc_rx_completion_handler);
1300 /* Called by lower (CE) layer when data is received from the Target.
1301 * Only 10.4 firmware uses separate CE to transfer pktlog data.
1303 static void ath10k_pci_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state)
1305 ath10k_pci_process_rx_cb(ce_state,
1306 ath10k_htt_rx_pktlog_completion_handler);
1309 /* Called by lower (CE) layer when a send to HTT Target completes. */
1310 static void ath10k_pci_htt_tx_cb(struct ath10k_ce_pipe *ce_state)
1312 struct ath10k *ar = ce_state->ar;
1313 struct sk_buff *skb;
1315 while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) {
1316 /* no need to call tx completion for NULL pointers */
1320 dma_unmap_single(ar->dev, ATH10K_SKB_CB(skb)->paddr,
1321 skb->len, DMA_TO_DEVICE);
1322 ath10k_htt_hif_tx_complete(ar, skb);
1326 static void ath10k_pci_htt_rx_deliver(struct ath10k *ar, struct sk_buff *skb)
1328 skb_pull(skb, sizeof(struct ath10k_htc_hdr));
1329 ath10k_htt_t2h_msg_handler(ar, skb);
1332 /* Called by lower (CE) layer when HTT data is received from the Target. */
1333 static void ath10k_pci_htt_rx_cb(struct ath10k_ce_pipe *ce_state)
1335 /* CE4 polling needs to be done whenever CE pipe which transports
1336 * HTT Rx (target->host) is processed.
1338 ath10k_ce_per_engine_service(ce_state->ar, 4);
1340 ath10k_pci_process_htt_rx_cb(ce_state, ath10k_pci_htt_rx_deliver);
1343 int ath10k_pci_hif_tx_sg(struct ath10k *ar, u8 pipe_id,
1344 struct ath10k_hif_sg_item *items, int n_items)
1346 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1347 struct ath10k_ce *ce = ath10k_ce_priv(ar);
1348 struct ath10k_pci_pipe *pci_pipe = &ar_pci->pipe_info[pipe_id];
1349 struct ath10k_ce_pipe *ce_pipe = pci_pipe->ce_hdl;
1350 struct ath10k_ce_ring *src_ring = ce_pipe->src_ring;
1351 unsigned int nentries_mask;
1352 unsigned int sw_index;
1353 unsigned int write_index;
1356 spin_lock_bh(&ce->ce_lock);
1358 nentries_mask = src_ring->nentries_mask;
1359 sw_index = src_ring->sw_index;
1360 write_index = src_ring->write_index;
1362 if (unlikely(CE_RING_DELTA(nentries_mask,
1363 write_index, sw_index - 1) < n_items)) {
1368 for (i = 0; i < n_items - 1; i++) {
1369 ath10k_dbg(ar, ATH10K_DBG_PCI,
1370 "pci tx item %d paddr 0x%08x len %d n_items %d\n",
1371 i, items[i].paddr, items[i].len, n_items);
1372 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci tx data: ",
1373 items[i].vaddr, items[i].len);
1375 err = ath10k_ce_send_nolock(ce_pipe,
1376 items[i].transfer_context,
1379 items[i].transfer_id,
1380 CE_SEND_FLAG_GATHER);
1385 /* `i` is equal to `n_items -1` after for() */
1387 ath10k_dbg(ar, ATH10K_DBG_PCI,
1388 "pci tx item %d paddr 0x%08x len %d n_items %d\n",
1389 i, items[i].paddr, items[i].len, n_items);
1390 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci tx data: ",
1391 items[i].vaddr, items[i].len);
1393 err = ath10k_ce_send_nolock(ce_pipe,
1394 items[i].transfer_context,
1397 items[i].transfer_id,
1402 spin_unlock_bh(&ce->ce_lock);
1407 __ath10k_ce_send_revert(ce_pipe);
1409 spin_unlock_bh(&ce->ce_lock);
1413 int ath10k_pci_hif_diag_read(struct ath10k *ar, u32 address, void *buf,
1416 return ath10k_pci_diag_read_mem(ar, address, buf, buf_len);
1419 u16 ath10k_pci_hif_get_free_queue_number(struct ath10k *ar, u8 pipe)
1421 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1423 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif get free queue number\n");
1425 return ath10k_ce_num_free_src_entries(ar_pci->pipe_info[pipe].ce_hdl);
1428 static void ath10k_pci_dump_registers(struct ath10k *ar,
1429 struct ath10k_fw_crash_data *crash_data)
1431 __le32 reg_dump_values[REG_DUMP_COUNT_QCA988X] = {};
1434 lockdep_assert_held(&ar->data_lock);
1436 ret = ath10k_pci_diag_read_hi(ar, ®_dump_values[0],
1438 REG_DUMP_COUNT_QCA988X * sizeof(__le32));
1440 ath10k_err(ar, "failed to read firmware dump area: %d\n", ret);
1444 BUILD_BUG_ON(REG_DUMP_COUNT_QCA988X % 4);
1446 ath10k_err(ar, "firmware register dump:\n");
1447 for (i = 0; i < REG_DUMP_COUNT_QCA988X; i += 4)
1448 ath10k_err(ar, "[%02d]: 0x%08X 0x%08X 0x%08X 0x%08X\n",
1450 __le32_to_cpu(reg_dump_values[i]),
1451 __le32_to_cpu(reg_dump_values[i + 1]),
1452 __le32_to_cpu(reg_dump_values[i + 2]),
1453 __le32_to_cpu(reg_dump_values[i + 3]));
1458 for (i = 0; i < REG_DUMP_COUNT_QCA988X; i++)
1459 crash_data->registers[i] = reg_dump_values[i];
1462 static void ath10k_pci_fw_crashed_dump(struct ath10k *ar)
1464 struct ath10k_fw_crash_data *crash_data;
1465 char guid[UUID_STRING_LEN + 1];
1467 spin_lock_bh(&ar->data_lock);
1469 ar->stats.fw_crash_counter++;
1471 crash_data = ath10k_debug_get_new_fw_crash_data(ar);
1474 scnprintf(guid, sizeof(guid), "%pUl", &crash_data->guid);
1476 scnprintf(guid, sizeof(guid), "n/a");
1478 ath10k_err(ar, "firmware crashed! (guid %s)\n", guid);
1479 ath10k_print_driver_info(ar);
1480 ath10k_pci_dump_registers(ar, crash_data);
1481 ath10k_ce_dump_registers(ar, crash_data);
1483 spin_unlock_bh(&ar->data_lock);
1485 queue_work(ar->workqueue, &ar->restart_work);
1488 void ath10k_pci_hif_send_complete_check(struct ath10k *ar, u8 pipe,
1491 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif send complete check\n");
1496 * Decide whether to actually poll for completions, or just
1497 * wait for a later chance.
1498 * If there seem to be plenty of resources left, then just wait
1499 * since checking involves reading a CE register, which is a
1500 * relatively expensive operation.
1502 resources = ath10k_pci_hif_get_free_queue_number(ar, pipe);
1505 * If at least 50% of the total resources are still available,
1506 * don't bother checking again yet.
1508 if (resources > (host_ce_config_wlan[pipe].src_nentries >> 1))
1511 ath10k_ce_per_engine_service(ar, pipe);
1514 static void ath10k_pci_rx_retry_sync(struct ath10k *ar)
1516 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1518 del_timer_sync(&ar_pci->rx_post_retry);
1521 int ath10k_pci_hif_map_service_to_pipe(struct ath10k *ar, u16 service_id,
1522 u8 *ul_pipe, u8 *dl_pipe)
1524 const struct service_to_pipe *entry;
1525 bool ul_set = false, dl_set = false;
1528 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif map service\n");
1530 for (i = 0; i < ARRAY_SIZE(target_service_to_ce_map_wlan); i++) {
1531 entry = &target_service_to_ce_map_wlan[i];
1533 if (__le32_to_cpu(entry->service_id) != service_id)
1536 switch (__le32_to_cpu(entry->pipedir)) {
1541 *dl_pipe = __le32_to_cpu(entry->pipenum);
1546 *ul_pipe = __le32_to_cpu(entry->pipenum);
1552 *dl_pipe = __le32_to_cpu(entry->pipenum);
1553 *ul_pipe = __le32_to_cpu(entry->pipenum);
1560 if (WARN_ON(!ul_set || !dl_set))
1566 void ath10k_pci_hif_get_default_pipe(struct ath10k *ar,
1567 u8 *ul_pipe, u8 *dl_pipe)
1569 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif get default pipe\n");
1571 (void)ath10k_pci_hif_map_service_to_pipe(ar,
1572 ATH10K_HTC_SVC_ID_RSVD_CTRL,
1576 void ath10k_pci_irq_msi_fw_mask(struct ath10k *ar)
1580 switch (ar->hw_rev) {
1581 case ATH10K_HW_QCA988X:
1582 case ATH10K_HW_QCA9887:
1583 case ATH10K_HW_QCA6174:
1584 case ATH10K_HW_QCA9377:
1585 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
1587 val &= ~CORE_CTRL_PCIE_REG_31_MASK;
1588 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
1589 CORE_CTRL_ADDRESS, val);
1591 case ATH10K_HW_QCA99X0:
1592 case ATH10K_HW_QCA9984:
1593 case ATH10K_HW_QCA9888:
1594 case ATH10K_HW_QCA4019:
1595 /* TODO: Find appropriate register configuration for QCA99X0
1599 case ATH10K_HW_WCN3990:
1604 static void ath10k_pci_irq_msi_fw_unmask(struct ath10k *ar)
1608 switch (ar->hw_rev) {
1609 case ATH10K_HW_QCA988X:
1610 case ATH10K_HW_QCA9887:
1611 case ATH10K_HW_QCA6174:
1612 case ATH10K_HW_QCA9377:
1613 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
1615 val |= CORE_CTRL_PCIE_REG_31_MASK;
1616 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
1617 CORE_CTRL_ADDRESS, val);
1619 case ATH10K_HW_QCA99X0:
1620 case ATH10K_HW_QCA9984:
1621 case ATH10K_HW_QCA9888:
1622 case ATH10K_HW_QCA4019:
1623 /* TODO: Find appropriate register configuration for QCA99X0
1624 * to unmask irq/MSI.
1627 case ATH10K_HW_WCN3990:
1632 static void ath10k_pci_irq_disable(struct ath10k *ar)
1634 ath10k_ce_disable_interrupts(ar);
1635 ath10k_pci_disable_and_clear_legacy_irq(ar);
1636 ath10k_pci_irq_msi_fw_mask(ar);
1639 static void ath10k_pci_irq_sync(struct ath10k *ar)
1641 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1643 synchronize_irq(ar_pci->pdev->irq);
1646 static void ath10k_pci_irq_enable(struct ath10k *ar)
1648 ath10k_ce_enable_interrupts(ar);
1649 ath10k_pci_enable_legacy_irq(ar);
1650 ath10k_pci_irq_msi_fw_unmask(ar);
1653 static int ath10k_pci_hif_start(struct ath10k *ar)
1655 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1657 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif start\n");
1659 napi_enable(&ar->napi);
1661 ath10k_pci_irq_enable(ar);
1662 ath10k_pci_rx_post(ar);
1664 pcie_capability_clear_and_set_word(ar_pci->pdev, PCI_EXP_LNKCTL,
1665 PCI_EXP_LNKCTL_ASPMC,
1666 ar_pci->link_ctl & PCI_EXP_LNKCTL_ASPMC);
1671 static void ath10k_pci_rx_pipe_cleanup(struct ath10k_pci_pipe *pci_pipe)
1674 struct ath10k_ce_pipe *ce_pipe;
1675 struct ath10k_ce_ring *ce_ring;
1676 struct sk_buff *skb;
1679 ar = pci_pipe->hif_ce_state;
1680 ce_pipe = pci_pipe->ce_hdl;
1681 ce_ring = ce_pipe->dest_ring;
1686 if (!pci_pipe->buf_sz)
1689 for (i = 0; i < ce_ring->nentries; i++) {
1690 skb = ce_ring->per_transfer_context[i];
1694 ce_ring->per_transfer_context[i] = NULL;
1696 dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1697 skb->len + skb_tailroom(skb),
1699 dev_kfree_skb_any(skb);
1703 static void ath10k_pci_tx_pipe_cleanup(struct ath10k_pci_pipe *pci_pipe)
1706 struct ath10k_ce_pipe *ce_pipe;
1707 struct ath10k_ce_ring *ce_ring;
1708 struct sk_buff *skb;
1711 ar = pci_pipe->hif_ce_state;
1712 ce_pipe = pci_pipe->ce_hdl;
1713 ce_ring = ce_pipe->src_ring;
1718 if (!pci_pipe->buf_sz)
1721 for (i = 0; i < ce_ring->nentries; i++) {
1722 skb = ce_ring->per_transfer_context[i];
1726 ce_ring->per_transfer_context[i] = NULL;
1728 ath10k_htc_tx_completion_handler(ar, skb);
1733 * Cleanup residual buffers for device shutdown:
1734 * buffers that were enqueued for receive
1735 * buffers that were to be sent
1736 * Note: Buffers that had completed but which were
1737 * not yet processed are on a completion queue. They
1738 * are handled when the completion thread shuts down.
1740 static void ath10k_pci_buffer_cleanup(struct ath10k *ar)
1742 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1745 for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) {
1746 struct ath10k_pci_pipe *pipe_info;
1748 pipe_info = &ar_pci->pipe_info[pipe_num];
1749 ath10k_pci_rx_pipe_cleanup(pipe_info);
1750 ath10k_pci_tx_pipe_cleanup(pipe_info);
1754 void ath10k_pci_ce_deinit(struct ath10k *ar)
1758 for (i = 0; i < CE_COUNT; i++)
1759 ath10k_ce_deinit_pipe(ar, i);
1762 void ath10k_pci_flush(struct ath10k *ar)
1764 ath10k_pci_rx_retry_sync(ar);
1765 ath10k_pci_buffer_cleanup(ar);
1768 static void ath10k_pci_hif_stop(struct ath10k *ar)
1770 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1771 unsigned long flags;
1773 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif stop\n");
1775 ath10k_pci_irq_disable(ar);
1776 ath10k_pci_irq_sync(ar);
1777 napi_synchronize(&ar->napi);
1778 napi_disable(&ar->napi);
1780 /* Most likely the device has HTT Rx ring configured. The only way to
1781 * prevent the device from accessing (and possible corrupting) host
1782 * memory is to reset the chip now.
1784 * There's also no known way of masking MSI interrupts on the device.
1785 * For ranged MSI the CE-related interrupts can be masked. However
1786 * regardless how many MSI interrupts are assigned the first one
1787 * is always used for firmware indications (crashes) and cannot be
1788 * masked. To prevent the device from asserting the interrupt reset it
1789 * before proceeding with cleanup.
1791 ath10k_pci_safe_chip_reset(ar);
1793 ath10k_pci_flush(ar);
1795 spin_lock_irqsave(&ar_pci->ps_lock, flags);
1796 WARN_ON(ar_pci->ps_wake_refcount > 0);
1797 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
1800 int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar,
1801 void *req, u32 req_len,
1802 void *resp, u32 *resp_len)
1804 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1805 struct ath10k_pci_pipe *pci_tx = &ar_pci->pipe_info[BMI_CE_NUM_TO_TARG];
1806 struct ath10k_pci_pipe *pci_rx = &ar_pci->pipe_info[BMI_CE_NUM_TO_HOST];
1807 struct ath10k_ce_pipe *ce_tx = pci_tx->ce_hdl;
1808 struct ath10k_ce_pipe *ce_rx = pci_rx->ce_hdl;
1809 dma_addr_t req_paddr = 0;
1810 dma_addr_t resp_paddr = 0;
1811 struct bmi_xfer xfer = {};
1812 void *treq, *tresp = NULL;
1817 if (resp && !resp_len)
1820 if (resp && resp_len && *resp_len == 0)
1823 treq = kmemdup(req, req_len, GFP_KERNEL);
1827 req_paddr = dma_map_single(ar->dev, treq, req_len, DMA_TO_DEVICE);
1828 ret = dma_mapping_error(ar->dev, req_paddr);
1834 if (resp && resp_len) {
1835 tresp = kzalloc(*resp_len, GFP_KERNEL);
1841 resp_paddr = dma_map_single(ar->dev, tresp, *resp_len,
1843 ret = dma_mapping_error(ar->dev, resp_paddr);
1849 xfer.wait_for_resp = true;
1852 ath10k_ce_rx_post_buf(ce_rx, &xfer, resp_paddr);
1855 ret = ath10k_ce_send(ce_tx, &xfer, req_paddr, req_len, -1, 0);
1859 ret = ath10k_pci_bmi_wait(ar, ce_tx, ce_rx, &xfer);
1862 unsigned int unused_nbytes;
1863 unsigned int unused_id;
1865 ath10k_ce_cancel_send_next(ce_tx, NULL, &unused_buffer,
1866 &unused_nbytes, &unused_id);
1868 /* non-zero means we did not time out */
1876 ath10k_ce_revoke_recv_next(ce_rx, NULL, &unused_buffer);
1877 dma_unmap_single(ar->dev, resp_paddr,
1878 *resp_len, DMA_FROM_DEVICE);
1881 dma_unmap_single(ar->dev, req_paddr, req_len, DMA_TO_DEVICE);
1883 if (ret == 0 && resp_len) {
1884 *resp_len = min(*resp_len, xfer.resp_len);
1885 memcpy(resp, tresp, xfer.resp_len);
1894 static void ath10k_pci_bmi_send_done(struct ath10k_ce_pipe *ce_state)
1896 struct bmi_xfer *xfer;
1898 if (ath10k_ce_completed_send_next(ce_state, (void **)&xfer))
1901 xfer->tx_done = true;
1904 static void ath10k_pci_bmi_recv_data(struct ath10k_ce_pipe *ce_state)
1906 struct ath10k *ar = ce_state->ar;
1907 struct bmi_xfer *xfer;
1908 unsigned int nbytes;
1910 if (ath10k_ce_completed_recv_next(ce_state, (void **)&xfer,
1914 if (WARN_ON_ONCE(!xfer))
1917 if (!xfer->wait_for_resp) {
1918 ath10k_warn(ar, "unexpected: BMI data received; ignoring\n");
1922 xfer->resp_len = nbytes;
1923 xfer->rx_done = true;
1926 static int ath10k_pci_bmi_wait(struct ath10k *ar,
1927 struct ath10k_ce_pipe *tx_pipe,
1928 struct ath10k_ce_pipe *rx_pipe,
1929 struct bmi_xfer *xfer)
1931 unsigned long timeout = jiffies + BMI_COMMUNICATION_TIMEOUT_HZ;
1932 unsigned long started = jiffies;
1936 while (time_before_eq(jiffies, timeout)) {
1937 ath10k_pci_bmi_send_done(tx_pipe);
1938 ath10k_pci_bmi_recv_data(rx_pipe);
1940 if (xfer->tx_done && (xfer->rx_done == xfer->wait_for_resp)) {
1951 dur = jiffies - started;
1953 ath10k_dbg(ar, ATH10K_DBG_BMI,
1954 "bmi cmd took %lu jiffies hz %d ret %d\n",
1960 * Send an interrupt to the device to wake up the Target CPU
1961 * so it has an opportunity to notice any changed state.
1963 static int ath10k_pci_wake_target_cpu(struct ath10k *ar)
1967 addr = SOC_CORE_BASE_ADDRESS + CORE_CTRL_ADDRESS;
1968 val = ath10k_pci_read32(ar, addr);
1969 val |= CORE_CTRL_CPU_INTR_MASK;
1970 ath10k_pci_write32(ar, addr, val);
1975 static int ath10k_pci_get_num_banks(struct ath10k *ar)
1977 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1979 switch (ar_pci->pdev->device) {
1980 case QCA988X_2_0_DEVICE_ID:
1981 case QCA99X0_2_0_DEVICE_ID:
1982 case QCA9888_2_0_DEVICE_ID:
1983 case QCA9984_1_0_DEVICE_ID:
1984 case QCA9887_1_0_DEVICE_ID:
1986 case QCA6164_2_1_DEVICE_ID:
1987 case QCA6174_2_1_DEVICE_ID:
1988 switch (MS(ar->chip_id, SOC_CHIP_ID_REV)) {
1989 case QCA6174_HW_1_0_CHIP_ID_REV:
1990 case QCA6174_HW_1_1_CHIP_ID_REV:
1991 case QCA6174_HW_2_1_CHIP_ID_REV:
1992 case QCA6174_HW_2_2_CHIP_ID_REV:
1994 case QCA6174_HW_1_3_CHIP_ID_REV:
1996 case QCA6174_HW_3_0_CHIP_ID_REV:
1997 case QCA6174_HW_3_1_CHIP_ID_REV:
1998 case QCA6174_HW_3_2_CHIP_ID_REV:
2002 case QCA9377_1_0_DEVICE_ID:
2006 ath10k_warn(ar, "unknown number of banks, assuming 1\n");
2010 static int ath10k_bus_get_num_banks(struct ath10k *ar)
2012 struct ath10k_ce *ce = ath10k_ce_priv(ar);
2014 return ce->bus_ops->get_num_banks(ar);
2017 int ath10k_pci_init_config(struct ath10k *ar)
2019 u32 interconnect_targ_addr;
2020 u32 pcie_state_targ_addr = 0;
2021 u32 pipe_cfg_targ_addr = 0;
2022 u32 svc_to_pipe_map = 0;
2023 u32 pcie_config_flags = 0;
2025 u32 ealloc_targ_addr;
2027 u32 flag2_targ_addr;
2030 /* Download to Target the CE Config and the service-to-CE map */
2031 interconnect_targ_addr =
2032 host_interest_item_address(HI_ITEM(hi_interconnect_state));
2034 /* Supply Target-side CE configuration */
2035 ret = ath10k_pci_diag_read32(ar, interconnect_targ_addr,
2036 &pcie_state_targ_addr);
2038 ath10k_err(ar, "Failed to get pcie state addr: %d\n", ret);
2042 if (pcie_state_targ_addr == 0) {
2044 ath10k_err(ar, "Invalid pcie state addr\n");
2048 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
2049 offsetof(struct pcie_state,
2051 &pipe_cfg_targ_addr);
2053 ath10k_err(ar, "Failed to get pipe cfg addr: %d\n", ret);
2057 if (pipe_cfg_targ_addr == 0) {
2059 ath10k_err(ar, "Invalid pipe cfg addr\n");
2063 ret = ath10k_pci_diag_write_mem(ar, pipe_cfg_targ_addr,
2064 target_ce_config_wlan,
2065 sizeof(struct ce_pipe_config) *
2066 NUM_TARGET_CE_CONFIG_WLAN);
2069 ath10k_err(ar, "Failed to write pipe cfg: %d\n", ret);
2073 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
2074 offsetof(struct pcie_state,
2078 ath10k_err(ar, "Failed to get svc/pipe map: %d\n", ret);
2082 if (svc_to_pipe_map == 0) {
2084 ath10k_err(ar, "Invalid svc_to_pipe map\n");
2088 ret = ath10k_pci_diag_write_mem(ar, svc_to_pipe_map,
2089 target_service_to_ce_map_wlan,
2090 sizeof(target_service_to_ce_map_wlan));
2092 ath10k_err(ar, "Failed to write svc/pipe map: %d\n", ret);
2096 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
2097 offsetof(struct pcie_state,
2099 &pcie_config_flags);
2101 ath10k_err(ar, "Failed to get pcie config_flags: %d\n", ret);
2105 pcie_config_flags &= ~PCIE_CONFIG_FLAG_ENABLE_L1;
2107 ret = ath10k_pci_diag_write32(ar, (pcie_state_targ_addr +
2108 offsetof(struct pcie_state,
2112 ath10k_err(ar, "Failed to write pcie config_flags: %d\n", ret);
2116 /* configure early allocation */
2117 ealloc_targ_addr = host_interest_item_address(HI_ITEM(hi_early_alloc));
2119 ret = ath10k_pci_diag_read32(ar, ealloc_targ_addr, &ealloc_value);
2121 ath10k_err(ar, "Failed to get early alloc val: %d\n", ret);
2125 /* first bank is switched to IRAM */
2126 ealloc_value |= ((HI_EARLY_ALLOC_MAGIC << HI_EARLY_ALLOC_MAGIC_SHIFT) &
2127 HI_EARLY_ALLOC_MAGIC_MASK);
2128 ealloc_value |= ((ath10k_bus_get_num_banks(ar) <<
2129 HI_EARLY_ALLOC_IRAM_BANKS_SHIFT) &
2130 HI_EARLY_ALLOC_IRAM_BANKS_MASK);
2132 ret = ath10k_pci_diag_write32(ar, ealloc_targ_addr, ealloc_value);
2134 ath10k_err(ar, "Failed to set early alloc val: %d\n", ret);
2138 /* Tell Target to proceed with initialization */
2139 flag2_targ_addr = host_interest_item_address(HI_ITEM(hi_option_flag2));
2141 ret = ath10k_pci_diag_read32(ar, flag2_targ_addr, &flag2_value);
2143 ath10k_err(ar, "Failed to get option val: %d\n", ret);
2147 flag2_value |= HI_OPTION_EARLY_CFG_DONE;
2149 ret = ath10k_pci_diag_write32(ar, flag2_targ_addr, flag2_value);
2151 ath10k_err(ar, "Failed to set option val: %d\n", ret);
2158 static void ath10k_pci_override_ce_config(struct ath10k *ar)
2160 struct ce_attr *attr;
2161 struct ce_pipe_config *config;
2163 /* For QCA6174 we're overriding the Copy Engine 5 configuration,
2164 * since it is currently used for other feature.
2167 /* Override Host's Copy Engine 5 configuration */
2168 attr = &host_ce_config_wlan[5];
2169 attr->src_sz_max = 0;
2170 attr->dest_nentries = 0;
2172 /* Override Target firmware's Copy Engine configuration */
2173 config = &target_ce_config_wlan[5];
2174 config->pipedir = __cpu_to_le32(PIPEDIR_OUT);
2175 config->nbytes_max = __cpu_to_le32(2048);
2177 /* Map from service/endpoint to Copy Engine */
2178 target_service_to_ce_map_wlan[15].pipenum = __cpu_to_le32(1);
2181 int ath10k_pci_alloc_pipes(struct ath10k *ar)
2183 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2184 struct ath10k_pci_pipe *pipe;
2185 struct ath10k_ce *ce = ath10k_ce_priv(ar);
2188 for (i = 0; i < CE_COUNT; i++) {
2189 pipe = &ar_pci->pipe_info[i];
2190 pipe->ce_hdl = &ce->ce_states[i];
2192 pipe->hif_ce_state = ar;
2194 ret = ath10k_ce_alloc_pipe(ar, i, &host_ce_config_wlan[i]);
2196 ath10k_err(ar, "failed to allocate copy engine pipe %d: %d\n",
2201 /* Last CE is Diagnostic Window */
2202 if (i == CE_DIAG_PIPE) {
2203 ar_pci->ce_diag = pipe->ce_hdl;
2207 pipe->buf_sz = (size_t)(host_ce_config_wlan[i].src_sz_max);
2213 void ath10k_pci_free_pipes(struct ath10k *ar)
2217 for (i = 0; i < CE_COUNT; i++)
2218 ath10k_ce_free_pipe(ar, i);
2221 int ath10k_pci_init_pipes(struct ath10k *ar)
2225 for (i = 0; i < CE_COUNT; i++) {
2226 ret = ath10k_ce_init_pipe(ar, i, &host_ce_config_wlan[i]);
2228 ath10k_err(ar, "failed to initialize copy engine pipe %d: %d\n",
2237 static bool ath10k_pci_has_fw_crashed(struct ath10k *ar)
2239 return ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS) &
2240 FW_IND_EVENT_PENDING;
2243 static void ath10k_pci_fw_crashed_clear(struct ath10k *ar)
2247 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS);
2248 val &= ~FW_IND_EVENT_PENDING;
2249 ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, val);
2252 static bool ath10k_pci_has_device_gone(struct ath10k *ar)
2256 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS);
2257 return (val == 0xffffffff);
2260 /* this function effectively clears target memory controller assert line */
2261 static void ath10k_pci_warm_reset_si0(struct ath10k *ar)
2265 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2266 ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS,
2267 val | SOC_RESET_CONTROL_SI0_RST_MASK);
2268 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2272 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2273 ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS,
2274 val & ~SOC_RESET_CONTROL_SI0_RST_MASK);
2275 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2280 static void ath10k_pci_warm_reset_cpu(struct ath10k *ar)
2284 ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, 0);
2286 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
2287 SOC_RESET_CONTROL_ADDRESS);
2288 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
2289 val | SOC_RESET_CONTROL_CPU_WARM_RST_MASK);
2292 static void ath10k_pci_warm_reset_ce(struct ath10k *ar)
2296 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
2297 SOC_RESET_CONTROL_ADDRESS);
2299 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
2300 val | SOC_RESET_CONTROL_CE_RST_MASK);
2302 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
2303 val & ~SOC_RESET_CONTROL_CE_RST_MASK);
2306 static void ath10k_pci_warm_reset_clear_lf(struct ath10k *ar)
2310 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
2311 SOC_LF_TIMER_CONTROL0_ADDRESS);
2312 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS +
2313 SOC_LF_TIMER_CONTROL0_ADDRESS,
2314 val & ~SOC_LF_TIMER_CONTROL0_ENABLE_MASK);
2317 static int ath10k_pci_warm_reset(struct ath10k *ar)
2321 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot warm reset\n");
2323 spin_lock_bh(&ar->data_lock);
2324 ar->stats.fw_warm_reset_counter++;
2325 spin_unlock_bh(&ar->data_lock);
2327 ath10k_pci_irq_disable(ar);
2329 /* Make sure the target CPU is not doing anything dangerous, e.g. if it
2330 * were to access copy engine while host performs copy engine reset
2331 * then it is possible for the device to confuse pci-e controller to
2332 * the point of bringing host system to a complete stop (i.e. hang).
2334 ath10k_pci_warm_reset_si0(ar);
2335 ath10k_pci_warm_reset_cpu(ar);
2336 ath10k_pci_init_pipes(ar);
2337 ath10k_pci_wait_for_target_init(ar);
2339 ath10k_pci_warm_reset_clear_lf(ar);
2340 ath10k_pci_warm_reset_ce(ar);
2341 ath10k_pci_warm_reset_cpu(ar);
2342 ath10k_pci_init_pipes(ar);
2344 ret = ath10k_pci_wait_for_target_init(ar);
2346 ath10k_warn(ar, "failed to wait for target init: %d\n", ret);
2350 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot warm reset complete\n");
2355 static int ath10k_pci_qca99x0_soft_chip_reset(struct ath10k *ar)
2357 ath10k_pci_irq_disable(ar);
2358 return ath10k_pci_qca99x0_chip_reset(ar);
2361 static int ath10k_pci_safe_chip_reset(struct ath10k *ar)
2363 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2365 if (!ar_pci->pci_soft_reset)
2368 return ar_pci->pci_soft_reset(ar);
2371 static int ath10k_pci_qca988x_chip_reset(struct ath10k *ar)
2376 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot 988x chip reset\n");
2378 /* Some hardware revisions (e.g. CUS223v2) has issues with cold reset.
2379 * It is thus preferred to use warm reset which is safer but may not be
2380 * able to recover the device from all possible fail scenarios.
2382 * Warm reset doesn't always work on first try so attempt it a few
2383 * times before giving up.
2385 for (i = 0; i < ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS; i++) {
2386 ret = ath10k_pci_warm_reset(ar);
2388 ath10k_warn(ar, "failed to warm reset attempt %d of %d: %d\n",
2389 i + 1, ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS,
2394 /* FIXME: Sometimes copy engine doesn't recover after warm
2395 * reset. In most cases this needs cold reset. In some of these
2396 * cases the device is in such a state that a cold reset may
2399 * Reading any host interest register via copy engine is
2400 * sufficient to verify if device is capable of booting
2403 ret = ath10k_pci_init_pipes(ar);
2405 ath10k_warn(ar, "failed to init copy engine: %d\n",
2410 ret = ath10k_pci_diag_read32(ar, QCA988X_HOST_INTEREST_ADDRESS,
2413 ath10k_warn(ar, "failed to poke copy engine: %d\n",
2418 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot chip reset complete (warm)\n");
2422 if (ath10k_pci_reset_mode == ATH10K_PCI_RESET_WARM_ONLY) {
2423 ath10k_warn(ar, "refusing cold reset as requested\n");
2427 ret = ath10k_pci_cold_reset(ar);
2429 ath10k_warn(ar, "failed to cold reset: %d\n", ret);
2433 ret = ath10k_pci_wait_for_target_init(ar);
2435 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n",
2440 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca988x chip reset complete (cold)\n");
2445 static int ath10k_pci_qca6174_chip_reset(struct ath10k *ar)
2449 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca6174 chip reset\n");
2451 /* FIXME: QCA6174 requires cold + warm reset to work. */
2453 ret = ath10k_pci_cold_reset(ar);
2455 ath10k_warn(ar, "failed to cold reset: %d\n", ret);
2459 ret = ath10k_pci_wait_for_target_init(ar);
2461 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n",
2466 ret = ath10k_pci_warm_reset(ar);
2468 ath10k_warn(ar, "failed to warm reset: %d\n", ret);
2472 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca6174 chip reset complete (cold)\n");
2477 static int ath10k_pci_qca99x0_chip_reset(struct ath10k *ar)
2481 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca99x0 chip reset\n");
2483 ret = ath10k_pci_cold_reset(ar);
2485 ath10k_warn(ar, "failed to cold reset: %d\n", ret);
2489 ret = ath10k_pci_wait_for_target_init(ar);
2491 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n",
2496 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca99x0 chip reset complete (cold)\n");
2501 static int ath10k_pci_chip_reset(struct ath10k *ar)
2503 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2505 if (WARN_ON(!ar_pci->pci_hard_reset))
2508 return ar_pci->pci_hard_reset(ar);
2511 static int ath10k_pci_hif_power_up(struct ath10k *ar)
2513 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2516 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif power up\n");
2518 pcie_capability_read_word(ar_pci->pdev, PCI_EXP_LNKCTL,
2520 pcie_capability_clear_word(ar_pci->pdev, PCI_EXP_LNKCTL,
2521 PCI_EXP_LNKCTL_ASPMC);
2524 * Bring the target up cleanly.
2526 * The target may be in an undefined state with an AUX-powered Target
2527 * and a Host in WoW mode. If the Host crashes, loses power, or is
2528 * restarted (without unloading the driver) then the Target is left
2529 * (aux) powered and running. On a subsequent driver load, the Target
2530 * is in an unexpected state. We try to catch that here in order to
2531 * reset the Target and retry the probe.
2533 ret = ath10k_pci_chip_reset(ar);
2535 if (ath10k_pci_has_fw_crashed(ar)) {
2536 ath10k_warn(ar, "firmware crashed during chip reset\n");
2537 ath10k_pci_fw_crashed_clear(ar);
2538 ath10k_pci_fw_crashed_dump(ar);
2541 ath10k_err(ar, "failed to reset chip: %d\n", ret);
2545 ret = ath10k_pci_init_pipes(ar);
2547 ath10k_err(ar, "failed to initialize CE: %d\n", ret);
2551 ret = ath10k_pci_init_config(ar);
2553 ath10k_err(ar, "failed to setup init config: %d\n", ret);
2557 ret = ath10k_pci_wake_target_cpu(ar);
2559 ath10k_err(ar, "could not wake up target CPU: %d\n", ret);
2566 ath10k_pci_ce_deinit(ar);
2572 void ath10k_pci_hif_power_down(struct ath10k *ar)
2574 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif power down\n");
2576 /* Currently hif_power_up performs effectively a reset and hif_stop
2577 * resets the chip as well so there's no point in resetting here.
2581 static int ath10k_pci_hif_suspend(struct ath10k *ar)
2583 /* Nothing to do; the important stuff is in the driver suspend. */
2587 static int ath10k_pci_suspend(struct ath10k *ar)
2589 /* The grace timer can still be counting down and ar->ps_awake be true.
2590 * It is known that the device may be asleep after resuming regardless
2591 * of the SoC powersave state before suspending. Hence make sure the
2592 * device is asleep before proceeding.
2594 ath10k_pci_sleep_sync(ar);
2599 static int ath10k_pci_hif_resume(struct ath10k *ar)
2601 /* Nothing to do; the important stuff is in the driver resume. */
2605 static int ath10k_pci_resume(struct ath10k *ar)
2607 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2608 struct pci_dev *pdev = ar_pci->pdev;
2612 ret = ath10k_pci_force_wake(ar);
2614 ath10k_err(ar, "failed to wake up target: %d\n", ret);
2618 /* Suspend/Resume resets the PCI configuration space, so we have to
2619 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
2620 * from interfering with C3 CPU state. pci_restore_state won't help
2621 * here since it only restores the first 64 bytes pci config header.
2623 pci_read_config_dword(pdev, 0x40, &val);
2624 if ((val & 0x0000ff00) != 0)
2625 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
2630 static bool ath10k_pci_validate_cal(void *data, size_t size)
2632 __le16 *cal_words = data;
2639 for (i = 0; i < size / 2; i++)
2640 checksum ^= le16_to_cpu(cal_words[i]);
2642 return checksum == 0xffff;
2645 static void ath10k_pci_enable_eeprom(struct ath10k *ar)
2647 /* Enable SI clock */
2648 ath10k_pci_soc_write32(ar, CLOCK_CONTROL_OFFSET, 0x0);
2650 /* Configure GPIOs for I2C operation */
2651 ath10k_pci_write32(ar,
2652 GPIO_BASE_ADDRESS + GPIO_PIN0_OFFSET +
2653 4 * QCA9887_1_0_I2C_SDA_GPIO_PIN,
2654 SM(QCA9887_1_0_I2C_SDA_PIN_CONFIG,
2656 SM(1, GPIO_PIN0_PAD_PULL));
2658 ath10k_pci_write32(ar,
2659 GPIO_BASE_ADDRESS + GPIO_PIN0_OFFSET +
2660 4 * QCA9887_1_0_SI_CLK_GPIO_PIN,
2661 SM(QCA9887_1_0_SI_CLK_PIN_CONFIG, GPIO_PIN0_CONFIG) |
2662 SM(1, GPIO_PIN0_PAD_PULL));
2664 ath10k_pci_write32(ar,
2666 QCA9887_1_0_GPIO_ENABLE_W1TS_LOW_ADDRESS,
2667 1u << QCA9887_1_0_SI_CLK_GPIO_PIN);
2669 /* In Swift ASIC - EEPROM clock will be (110MHz/512) = 214KHz */
2670 ath10k_pci_write32(ar,
2671 SI_BASE_ADDRESS + SI_CONFIG_OFFSET,
2672 SM(1, SI_CONFIG_ERR_INT) |
2673 SM(1, SI_CONFIG_BIDIR_OD_DATA) |
2674 SM(1, SI_CONFIG_I2C) |
2675 SM(1, SI_CONFIG_POS_SAMPLE) |
2676 SM(1, SI_CONFIG_INACTIVE_DATA) |
2677 SM(1, SI_CONFIG_INACTIVE_CLK) |
2678 SM(8, SI_CONFIG_DIVIDER));
2681 static int ath10k_pci_read_eeprom(struct ath10k *ar, u16 addr, u8 *out)
2686 /* set device select byte and for the read operation */
2687 reg = QCA9887_EEPROM_SELECT_READ |
2688 SM(addr, QCA9887_EEPROM_ADDR_LO) |
2689 SM(addr >> 8, QCA9887_EEPROM_ADDR_HI);
2690 ath10k_pci_write32(ar, SI_BASE_ADDRESS + SI_TX_DATA0_OFFSET, reg);
2692 /* write transmit data, transfer length, and START bit */
2693 ath10k_pci_write32(ar, SI_BASE_ADDRESS + SI_CS_OFFSET,
2694 SM(1, SI_CS_START) | SM(1, SI_CS_RX_CNT) |
2695 SM(4, SI_CS_TX_CNT));
2697 /* wait max 1 sec */
2698 wait_limit = 100000;
2700 /* wait for SI_CS_DONE_INT */
2702 reg = ath10k_pci_read32(ar, SI_BASE_ADDRESS + SI_CS_OFFSET);
2703 if (MS(reg, SI_CS_DONE_INT))
2708 } while (wait_limit > 0);
2710 if (!MS(reg, SI_CS_DONE_INT)) {
2711 ath10k_err(ar, "timeout while reading device EEPROM at %04x\n",
2716 /* clear SI_CS_DONE_INT */
2717 ath10k_pci_write32(ar, SI_BASE_ADDRESS + SI_CS_OFFSET, reg);
2719 if (MS(reg, SI_CS_DONE_ERR)) {
2720 ath10k_err(ar, "failed to read device EEPROM at %04x\n", addr);
2724 /* extract receive data */
2725 reg = ath10k_pci_read32(ar, SI_BASE_ADDRESS + SI_RX_DATA0_OFFSET);
2731 static int ath10k_pci_hif_fetch_cal_eeprom(struct ath10k *ar, void **data,
2738 if (!QCA_REV_9887(ar))
2741 calsize = ar->hw_params.cal_data_len;
2742 caldata = kmalloc(calsize, GFP_KERNEL);
2746 ath10k_pci_enable_eeprom(ar);
2748 for (i = 0; i < calsize; i++) {
2749 ret = ath10k_pci_read_eeprom(ar, i, &caldata[i]);
2754 if (!ath10k_pci_validate_cal(caldata, calsize))
2758 *data_len = calsize;
2768 static const struct ath10k_hif_ops ath10k_pci_hif_ops = {
2769 .tx_sg = ath10k_pci_hif_tx_sg,
2770 .diag_read = ath10k_pci_hif_diag_read,
2771 .diag_write = ath10k_pci_diag_write_mem,
2772 .exchange_bmi_msg = ath10k_pci_hif_exchange_bmi_msg,
2773 .start = ath10k_pci_hif_start,
2774 .stop = ath10k_pci_hif_stop,
2775 .map_service_to_pipe = ath10k_pci_hif_map_service_to_pipe,
2776 .get_default_pipe = ath10k_pci_hif_get_default_pipe,
2777 .send_complete_check = ath10k_pci_hif_send_complete_check,
2778 .get_free_queue_number = ath10k_pci_hif_get_free_queue_number,
2779 .power_up = ath10k_pci_hif_power_up,
2780 .power_down = ath10k_pci_hif_power_down,
2781 .read32 = ath10k_pci_read32,
2782 .write32 = ath10k_pci_write32,
2783 .suspend = ath10k_pci_hif_suspend,
2784 .resume = ath10k_pci_hif_resume,
2785 .fetch_cal_eeprom = ath10k_pci_hif_fetch_cal_eeprom,
2789 * Top-level interrupt handler for all PCI interrupts from a Target.
2790 * When a block of MSI interrupts is allocated, this top-level handler
2791 * is not used; instead, we directly call the correct sub-handler.
2793 static irqreturn_t ath10k_pci_interrupt_handler(int irq, void *arg)
2795 struct ath10k *ar = arg;
2796 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2799 if (ath10k_pci_has_device_gone(ar))
2802 ret = ath10k_pci_force_wake(ar);
2804 ath10k_warn(ar, "failed to wake device up on irq: %d\n", ret);
2808 if ((ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_LEGACY) &&
2809 !ath10k_pci_irq_pending(ar))
2812 ath10k_pci_disable_and_clear_legacy_irq(ar);
2813 ath10k_pci_irq_msi_fw_mask(ar);
2814 napi_schedule(&ar->napi);
2819 static int ath10k_pci_napi_poll(struct napi_struct *ctx, int budget)
2821 struct ath10k *ar = container_of(ctx, struct ath10k, napi);
2824 if (ath10k_pci_has_fw_crashed(ar)) {
2825 ath10k_pci_fw_crashed_clear(ar);
2826 ath10k_pci_fw_crashed_dump(ar);
2831 ath10k_ce_per_engine_service_any(ar);
2833 done = ath10k_htt_txrx_compl_task(ar, budget);
2835 if (done < budget) {
2836 napi_complete_done(ctx, done);
2837 /* In case of MSI, it is possible that interrupts are received
2838 * while NAPI poll is inprogress. So pending interrupts that are
2839 * received after processing all copy engine pipes by NAPI poll
2840 * will not be handled again. This is causing failure to
2841 * complete boot sequence in x86 platform. So before enabling
2842 * interrupts safer to check for pending interrupts for
2843 * immediate servicing.
2845 if (ath10k_ce_interrupt_summary(ar)) {
2846 napi_reschedule(ctx);
2849 ath10k_pci_enable_legacy_irq(ar);
2850 ath10k_pci_irq_msi_fw_unmask(ar);
2857 static int ath10k_pci_request_irq_msi(struct ath10k *ar)
2859 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2862 ret = request_irq(ar_pci->pdev->irq,
2863 ath10k_pci_interrupt_handler,
2864 IRQF_SHARED, "ath10k_pci", ar);
2866 ath10k_warn(ar, "failed to request MSI irq %d: %d\n",
2867 ar_pci->pdev->irq, ret);
2874 static int ath10k_pci_request_irq_legacy(struct ath10k *ar)
2876 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2879 ret = request_irq(ar_pci->pdev->irq,
2880 ath10k_pci_interrupt_handler,
2881 IRQF_SHARED, "ath10k_pci", ar);
2883 ath10k_warn(ar, "failed to request legacy irq %d: %d\n",
2884 ar_pci->pdev->irq, ret);
2891 static int ath10k_pci_request_irq(struct ath10k *ar)
2893 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2895 switch (ar_pci->oper_irq_mode) {
2896 case ATH10K_PCI_IRQ_LEGACY:
2897 return ath10k_pci_request_irq_legacy(ar);
2898 case ATH10K_PCI_IRQ_MSI:
2899 return ath10k_pci_request_irq_msi(ar);
2905 static void ath10k_pci_free_irq(struct ath10k *ar)
2907 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2909 free_irq(ar_pci->pdev->irq, ar);
2912 void ath10k_pci_init_napi(struct ath10k *ar)
2914 netif_napi_add(&ar->napi_dev, &ar->napi, ath10k_pci_napi_poll,
2915 ATH10K_NAPI_BUDGET);
2918 static int ath10k_pci_init_irq(struct ath10k *ar)
2920 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2923 ath10k_pci_init_napi(ar);
2925 if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_AUTO)
2926 ath10k_info(ar, "limiting irq mode to: %d\n",
2927 ath10k_pci_irq_mode);
2930 if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_LEGACY) {
2931 ar_pci->oper_irq_mode = ATH10K_PCI_IRQ_MSI;
2932 ret = pci_enable_msi(ar_pci->pdev);
2941 * A potential race occurs here: The CORE_BASE write
2942 * depends on target correctly decoding AXI address but
2943 * host won't know when target writes BAR to CORE_CTRL.
2944 * This write might get lost if target has NOT written BAR.
2945 * For now, fix the race by repeating the write in below
2946 * synchronization checking.
2948 ar_pci->oper_irq_mode = ATH10K_PCI_IRQ_LEGACY;
2950 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
2951 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
2956 static void ath10k_pci_deinit_irq_legacy(struct ath10k *ar)
2958 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
2962 static int ath10k_pci_deinit_irq(struct ath10k *ar)
2964 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2966 switch (ar_pci->oper_irq_mode) {
2967 case ATH10K_PCI_IRQ_LEGACY:
2968 ath10k_pci_deinit_irq_legacy(ar);
2971 pci_disable_msi(ar_pci->pdev);
2978 int ath10k_pci_wait_for_target_init(struct ath10k *ar)
2980 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2981 unsigned long timeout;
2984 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot waiting target to initialise\n");
2986 timeout = jiffies + msecs_to_jiffies(ATH10K_PCI_TARGET_WAIT);
2989 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS);
2991 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot target indicator %x\n",
2994 /* target should never return this */
2995 if (val == 0xffffffff)
2998 /* the device has crashed so don't bother trying anymore */
2999 if (val & FW_IND_EVENT_PENDING)
3002 if (val & FW_IND_INITIALIZED)
3005 if (ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_LEGACY)
3006 /* Fix potential race by repeating CORE_BASE writes */
3007 ath10k_pci_enable_legacy_irq(ar);
3010 } while (time_before(jiffies, timeout));
3012 ath10k_pci_disable_and_clear_legacy_irq(ar);
3013 ath10k_pci_irq_msi_fw_mask(ar);
3015 if (val == 0xffffffff) {
3016 ath10k_err(ar, "failed to read device register, device is gone\n");
3020 if (val & FW_IND_EVENT_PENDING) {
3021 ath10k_warn(ar, "device has crashed during init\n");
3025 if (!(val & FW_IND_INITIALIZED)) {
3026 ath10k_err(ar, "failed to receive initialized event from target: %08x\n",
3031 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot target initialised\n");
3035 static int ath10k_pci_cold_reset(struct ath10k *ar)
3039 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cold reset\n");
3041 spin_lock_bh(&ar->data_lock);
3043 ar->stats.fw_cold_reset_counter++;
3045 spin_unlock_bh(&ar->data_lock);
3047 /* Put Target, including PCIe, into RESET. */
3048 val = ath10k_pci_reg_read32(ar, SOC_GLOBAL_RESET_ADDRESS);
3050 ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val);
3052 /* After writing into SOC_GLOBAL_RESET to put device into
3053 * reset and pulling out of reset pcie may not be stable
3054 * for any immediate pcie register access and cause bus error,
3055 * add delay before any pcie access request to fix this issue.
3059 /* Pull Target, including PCIe, out of RESET. */
3061 ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val);
3065 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cold reset complete\n");
3070 static int ath10k_pci_claim(struct ath10k *ar)
3072 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3073 struct pci_dev *pdev = ar_pci->pdev;
3076 pci_set_drvdata(pdev, ar);
3078 ret = pci_enable_device(pdev);
3080 ath10k_err(ar, "failed to enable pci device: %d\n", ret);
3084 ret = pci_request_region(pdev, BAR_NUM, "ath");
3086 ath10k_err(ar, "failed to request region BAR%d: %d\n", BAR_NUM,
3091 /* Target expects 32 bit DMA. Enforce it. */
3092 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3094 ath10k_err(ar, "failed to set dma mask to 32-bit: %d\n", ret);
3098 ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3100 ath10k_err(ar, "failed to set consistent dma mask to 32-bit: %d\n",
3105 pci_set_master(pdev);
3107 /* Arrange for access to Target SoC registers. */
3108 ar_pci->mem_len = pci_resource_len(pdev, BAR_NUM);
3109 ar_pci->mem = pci_iomap(pdev, BAR_NUM, 0);
3111 ath10k_err(ar, "failed to iomap BAR%d\n", BAR_NUM);
3116 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot pci_mem 0x%pK\n", ar_pci->mem);
3120 pci_clear_master(pdev);
3123 pci_release_region(pdev, BAR_NUM);
3126 pci_disable_device(pdev);
3131 static void ath10k_pci_release(struct ath10k *ar)
3133 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3134 struct pci_dev *pdev = ar_pci->pdev;
3136 pci_iounmap(pdev, ar_pci->mem);
3137 pci_release_region(pdev, BAR_NUM);
3138 pci_clear_master(pdev);
3139 pci_disable_device(pdev);
3142 static bool ath10k_pci_chip_is_supported(u32 dev_id, u32 chip_id)
3144 const struct ath10k_pci_supp_chip *supp_chip;
3146 u32 rev_id = MS(chip_id, SOC_CHIP_ID_REV);
3148 for (i = 0; i < ARRAY_SIZE(ath10k_pci_supp_chips); i++) {
3149 supp_chip = &ath10k_pci_supp_chips[i];
3151 if (supp_chip->dev_id == dev_id &&
3152 supp_chip->rev_id == rev_id)
3159 int ath10k_pci_setup_resource(struct ath10k *ar)
3161 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3162 struct ath10k_ce *ce = ath10k_ce_priv(ar);
3165 spin_lock_init(&ce->ce_lock);
3166 spin_lock_init(&ar_pci->ps_lock);
3168 setup_timer(&ar_pci->rx_post_retry, ath10k_pci_rx_replenish_retry,
3171 if (QCA_REV_6174(ar) || QCA_REV_9377(ar))
3172 ath10k_pci_override_ce_config(ar);
3174 ret = ath10k_pci_alloc_pipes(ar);
3176 ath10k_err(ar, "failed to allocate copy engine pipes: %d\n",
3184 void ath10k_pci_release_resource(struct ath10k *ar)
3186 ath10k_pci_rx_retry_sync(ar);
3187 netif_napi_del(&ar->napi);
3188 ath10k_pci_ce_deinit(ar);
3189 ath10k_pci_free_pipes(ar);
3192 static const struct ath10k_bus_ops ath10k_pci_bus_ops = {
3193 .read32 = ath10k_bus_pci_read32,
3194 .write32 = ath10k_bus_pci_write32,
3195 .get_num_banks = ath10k_pci_get_num_banks,
3198 static int ath10k_pci_probe(struct pci_dev *pdev,
3199 const struct pci_device_id *pci_dev)
3203 struct ath10k_pci *ar_pci;
3204 enum ath10k_hw_rev hw_rev;
3207 int (*pci_soft_reset)(struct ath10k *ar);
3208 int (*pci_hard_reset)(struct ath10k *ar);
3209 u32 (*targ_cpu_to_ce_addr)(struct ath10k *ar, u32 addr);
3211 switch (pci_dev->device) {
3212 case QCA988X_2_0_DEVICE_ID:
3213 hw_rev = ATH10K_HW_QCA988X;
3215 pci_soft_reset = ath10k_pci_warm_reset;
3216 pci_hard_reset = ath10k_pci_qca988x_chip_reset;
3217 targ_cpu_to_ce_addr = ath10k_pci_qca988x_targ_cpu_to_ce_addr;
3219 case QCA9887_1_0_DEVICE_ID:
3220 hw_rev = ATH10K_HW_QCA9887;
3222 pci_soft_reset = ath10k_pci_warm_reset;
3223 pci_hard_reset = ath10k_pci_qca988x_chip_reset;
3224 targ_cpu_to_ce_addr = ath10k_pci_qca988x_targ_cpu_to_ce_addr;
3226 case QCA6164_2_1_DEVICE_ID:
3227 case QCA6174_2_1_DEVICE_ID:
3228 hw_rev = ATH10K_HW_QCA6174;
3230 pci_soft_reset = ath10k_pci_warm_reset;
3231 pci_hard_reset = ath10k_pci_qca6174_chip_reset;
3232 targ_cpu_to_ce_addr = ath10k_pci_qca988x_targ_cpu_to_ce_addr;
3234 case QCA99X0_2_0_DEVICE_ID:
3235 hw_rev = ATH10K_HW_QCA99X0;
3237 pci_soft_reset = ath10k_pci_qca99x0_soft_chip_reset;
3238 pci_hard_reset = ath10k_pci_qca99x0_chip_reset;
3239 targ_cpu_to_ce_addr = ath10k_pci_qca99x0_targ_cpu_to_ce_addr;
3241 case QCA9984_1_0_DEVICE_ID:
3242 hw_rev = ATH10K_HW_QCA9984;
3244 pci_soft_reset = ath10k_pci_qca99x0_soft_chip_reset;
3245 pci_hard_reset = ath10k_pci_qca99x0_chip_reset;
3246 targ_cpu_to_ce_addr = ath10k_pci_qca99x0_targ_cpu_to_ce_addr;
3248 case QCA9888_2_0_DEVICE_ID:
3249 hw_rev = ATH10K_HW_QCA9888;
3251 pci_soft_reset = ath10k_pci_qca99x0_soft_chip_reset;
3252 pci_hard_reset = ath10k_pci_qca99x0_chip_reset;
3253 targ_cpu_to_ce_addr = ath10k_pci_qca99x0_targ_cpu_to_ce_addr;
3255 case QCA9377_1_0_DEVICE_ID:
3256 hw_rev = ATH10K_HW_QCA9377;
3258 pci_soft_reset = NULL;
3259 pci_hard_reset = ath10k_pci_qca6174_chip_reset;
3260 targ_cpu_to_ce_addr = ath10k_pci_qca988x_targ_cpu_to_ce_addr;
3267 ar = ath10k_core_create(sizeof(*ar_pci), &pdev->dev, ATH10K_BUS_PCI,
3268 hw_rev, &ath10k_pci_hif_ops);
3270 dev_err(&pdev->dev, "failed to allocate core\n");
3274 ath10k_dbg(ar, ATH10K_DBG_BOOT, "pci probe %04x:%04x %04x:%04x\n",
3275 pdev->vendor, pdev->device,
3276 pdev->subsystem_vendor, pdev->subsystem_device);
3278 ar_pci = ath10k_pci_priv(ar);
3279 ar_pci->pdev = pdev;
3280 ar_pci->dev = &pdev->dev;
3282 ar->dev_id = pci_dev->device;
3283 ar_pci->pci_ps = pci_ps;
3284 ar_pci->ce.bus_ops = &ath10k_pci_bus_ops;
3285 ar_pci->pci_soft_reset = pci_soft_reset;
3286 ar_pci->pci_hard_reset = pci_hard_reset;
3287 ar_pci->targ_cpu_to_ce_addr = targ_cpu_to_ce_addr;
3288 ar->ce_priv = &ar_pci->ce;
3290 ar->id.vendor = pdev->vendor;
3291 ar->id.device = pdev->device;
3292 ar->id.subsystem_vendor = pdev->subsystem_vendor;
3293 ar->id.subsystem_device = pdev->subsystem_device;
3295 setup_timer(&ar_pci->ps_timer, ath10k_pci_ps_timer,
3298 ret = ath10k_pci_setup_resource(ar);
3300 ath10k_err(ar, "failed to setup resource: %d\n", ret);
3301 goto err_core_destroy;
3304 ret = ath10k_pci_claim(ar);
3306 ath10k_err(ar, "failed to claim device: %d\n", ret);
3307 goto err_free_pipes;
3310 ret = ath10k_pci_force_wake(ar);
3312 ath10k_warn(ar, "failed to wake up device : %d\n", ret);
3316 ath10k_pci_ce_deinit(ar);
3317 ath10k_pci_irq_disable(ar);
3319 ret = ath10k_pci_init_irq(ar);
3321 ath10k_err(ar, "failed to init irqs: %d\n", ret);
3325 ath10k_info(ar, "pci irq %s oper_irq_mode %d irq_mode %d reset_mode %d\n",
3326 ath10k_pci_get_irq_method(ar), ar_pci->oper_irq_mode,
3327 ath10k_pci_irq_mode, ath10k_pci_reset_mode);
3329 ret = ath10k_pci_request_irq(ar);
3331 ath10k_warn(ar, "failed to request irqs: %d\n", ret);
3332 goto err_deinit_irq;
3335 ret = ath10k_pci_chip_reset(ar);
3337 ath10k_err(ar, "failed to reset chip: %d\n", ret);
3341 chip_id = ath10k_pci_soc_read32(ar, SOC_CHIP_ID_ADDRESS);
3342 if (chip_id == 0xffffffff) {
3343 ath10k_err(ar, "failed to get chip id\n");
3347 if (!ath10k_pci_chip_is_supported(pdev->device, chip_id)) {
3348 ath10k_err(ar, "device %04x with chip_id %08x isn't supported\n",
3349 pdev->device, chip_id);
3353 ret = ath10k_core_register(ar, chip_id);
3355 ath10k_err(ar, "failed to register driver core: %d\n", ret);
3362 ath10k_pci_free_irq(ar);
3363 ath10k_pci_rx_retry_sync(ar);
3366 ath10k_pci_deinit_irq(ar);
3369 ath10k_pci_sleep_sync(ar);
3370 ath10k_pci_release(ar);
3373 ath10k_pci_free_pipes(ar);
3376 ath10k_core_destroy(ar);
3381 static void ath10k_pci_remove(struct pci_dev *pdev)
3383 struct ath10k *ar = pci_get_drvdata(pdev);
3384 struct ath10k_pci *ar_pci;
3386 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci remove\n");
3391 ar_pci = ath10k_pci_priv(ar);
3396 ath10k_core_unregister(ar);
3397 ath10k_pci_free_irq(ar);
3398 ath10k_pci_deinit_irq(ar);
3399 ath10k_pci_release_resource(ar);
3400 ath10k_pci_sleep_sync(ar);
3401 ath10k_pci_release(ar);
3402 ath10k_core_destroy(ar);
3405 MODULE_DEVICE_TABLE(pci, ath10k_pci_id_table);
3407 static __maybe_unused int ath10k_pci_pm_suspend(struct device *dev)
3409 struct ath10k *ar = dev_get_drvdata(dev);
3412 ret = ath10k_pci_suspend(ar);
3414 ath10k_warn(ar, "failed to suspend hif: %d\n", ret);
3419 static __maybe_unused int ath10k_pci_pm_resume(struct device *dev)
3421 struct ath10k *ar = dev_get_drvdata(dev);
3424 ret = ath10k_pci_resume(ar);
3426 ath10k_warn(ar, "failed to resume hif: %d\n", ret);
3431 static SIMPLE_DEV_PM_OPS(ath10k_pci_pm_ops,
3432 ath10k_pci_pm_suspend,
3433 ath10k_pci_pm_resume);
3435 static struct pci_driver ath10k_pci_driver = {
3436 .name = "ath10k_pci",
3437 .id_table = ath10k_pci_id_table,
3438 .probe = ath10k_pci_probe,
3439 .remove = ath10k_pci_remove,
3441 .driver.pm = &ath10k_pci_pm_ops,
3445 static int __init ath10k_pci_init(void)
3449 ret1 = pci_register_driver(&ath10k_pci_driver);
3451 printk(KERN_ERR "failed to register ath10k pci driver: %d\n",
3454 ret2 = ath10k_ahb_init();
3456 printk(KERN_ERR "ahb init failed: %d\n", ret2);
3461 /* registered to at least one bus */
3464 module_init(ath10k_pci_init);
3466 static void __exit ath10k_pci_exit(void)
3468 pci_unregister_driver(&ath10k_pci_driver);
3472 module_exit(ath10k_pci_exit);
3474 MODULE_AUTHOR("Qualcomm Atheros");
3475 MODULE_DESCRIPTION("Driver support for Qualcomm Atheros 802.11ac WLAN PCIe/AHB devices");
3476 MODULE_LICENSE("Dual BSD/GPL");
3478 /* QCA988x 2.0 firmware files */
3481 /* QCA9887 1.0 firmware files */
3484 /* QCA6174 2.1 firmware files */
3487 /* QCA6174 3.1 firmware files */
3490 /* QCA9377 1.0 firmware files */