2 * Copyright (c) 2005-2011 Atheros Communications Inc.
3 * Copyright (c) 2011-2017 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>
28 #include "targaddrs.h"
37 enum ath10k_pci_reset_mode {
38 ATH10K_PCI_RESET_AUTO = 0,
39 ATH10K_PCI_RESET_WARM_ONLY = 1,
42 static unsigned int ath10k_pci_irq_mode = ATH10K_PCI_IRQ_AUTO;
43 static unsigned int ath10k_pci_reset_mode = ATH10K_PCI_RESET_AUTO;
45 module_param_named(irq_mode, ath10k_pci_irq_mode, uint, 0644);
46 MODULE_PARM_DESC(irq_mode, "0: auto, 1: legacy, 2: msi (default: 0)");
48 module_param_named(reset_mode, ath10k_pci_reset_mode, uint, 0644);
49 MODULE_PARM_DESC(reset_mode, "0: auto, 1: warm only (default: 0)");
51 /* how long wait to wait for target to initialise, in ms */
52 #define ATH10K_PCI_TARGET_WAIT 3000
53 #define ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS 3
55 /* Maximum number of bytes that can be handled atomically by
56 * diag read and write.
58 #define ATH10K_DIAG_TRANSFER_LIMIT 0x5000
60 #define QCA99X0_PCIE_BAR0_START_REG 0x81030
61 #define QCA99X0_CPU_MEM_ADDR_REG 0x4d00c
62 #define QCA99X0_CPU_MEM_DATA_REG 0x4d010
64 static const struct pci_device_id ath10k_pci_id_table[] = {
65 /* PCI-E QCA988X V2 (Ubiquiti branded) */
66 { PCI_VDEVICE(UBIQUITI, QCA988X_2_0_DEVICE_ID_UBNT) },
68 { PCI_VDEVICE(ATHEROS, QCA988X_2_0_DEVICE_ID) }, /* PCI-E QCA988X V2 */
69 { PCI_VDEVICE(ATHEROS, QCA6164_2_1_DEVICE_ID) }, /* PCI-E QCA6164 V2.1 */
70 { PCI_VDEVICE(ATHEROS, QCA6174_2_1_DEVICE_ID) }, /* PCI-E QCA6174 V2.1 */
71 { PCI_VDEVICE(ATHEROS, QCA99X0_2_0_DEVICE_ID) }, /* PCI-E QCA99X0 V2 */
72 { PCI_VDEVICE(ATHEROS, QCA9888_2_0_DEVICE_ID) }, /* PCI-E QCA9888 V2 */
73 { PCI_VDEVICE(ATHEROS, QCA9984_1_0_DEVICE_ID) }, /* PCI-E QCA9984 V1 */
74 { PCI_VDEVICE(ATHEROS, QCA9377_1_0_DEVICE_ID) }, /* PCI-E QCA9377 V1 */
75 { PCI_VDEVICE(ATHEROS, QCA9887_1_0_DEVICE_ID) }, /* PCI-E QCA9887 */
79 static const struct ath10k_pci_supp_chip ath10k_pci_supp_chips[] = {
80 /* QCA988X pre 2.0 chips are not supported because they need some nasty
81 * hacks. ath10k doesn't have them and these devices crash horribly
84 { QCA988X_2_0_DEVICE_ID_UBNT, QCA988X_HW_2_0_CHIP_ID_REV },
85 { QCA988X_2_0_DEVICE_ID, QCA988X_HW_2_0_CHIP_ID_REV },
87 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_2_1_CHIP_ID_REV },
88 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_2_2_CHIP_ID_REV },
89 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_3_0_CHIP_ID_REV },
90 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_3_1_CHIP_ID_REV },
91 { QCA6164_2_1_DEVICE_ID, QCA6174_HW_3_2_CHIP_ID_REV },
93 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_2_1_CHIP_ID_REV },
94 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_2_2_CHIP_ID_REV },
95 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_3_0_CHIP_ID_REV },
96 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_3_1_CHIP_ID_REV },
97 { QCA6174_2_1_DEVICE_ID, QCA6174_HW_3_2_CHIP_ID_REV },
99 { QCA99X0_2_0_DEVICE_ID, QCA99X0_HW_2_0_CHIP_ID_REV },
101 { QCA9984_1_0_DEVICE_ID, QCA9984_HW_1_0_CHIP_ID_REV },
103 { QCA9888_2_0_DEVICE_ID, QCA9888_HW_2_0_CHIP_ID_REV },
105 { QCA9377_1_0_DEVICE_ID, QCA9377_HW_1_0_CHIP_ID_REV },
106 { QCA9377_1_0_DEVICE_ID, QCA9377_HW_1_1_CHIP_ID_REV },
108 { QCA9887_1_0_DEVICE_ID, QCA9887_HW_1_0_CHIP_ID_REV },
111 static void ath10k_pci_buffer_cleanup(struct ath10k *ar);
112 static int ath10k_pci_cold_reset(struct ath10k *ar);
113 static int ath10k_pci_safe_chip_reset(struct ath10k *ar);
114 static int ath10k_pci_init_irq(struct ath10k *ar);
115 static int ath10k_pci_deinit_irq(struct ath10k *ar);
116 static int ath10k_pci_request_irq(struct ath10k *ar);
117 static void ath10k_pci_free_irq(struct ath10k *ar);
118 static int ath10k_pci_bmi_wait(struct ath10k *ar,
119 struct ath10k_ce_pipe *tx_pipe,
120 struct ath10k_ce_pipe *rx_pipe,
121 struct bmi_xfer *xfer);
122 static int ath10k_pci_qca99x0_chip_reset(struct ath10k *ar);
123 static void ath10k_pci_htc_tx_cb(struct ath10k_ce_pipe *ce_state);
124 static void ath10k_pci_htc_rx_cb(struct ath10k_ce_pipe *ce_state);
125 static void ath10k_pci_htt_tx_cb(struct ath10k_ce_pipe *ce_state);
126 static void ath10k_pci_htt_rx_cb(struct ath10k_ce_pipe *ce_state);
127 static void ath10k_pci_htt_htc_rx_cb(struct ath10k_ce_pipe *ce_state);
128 static void ath10k_pci_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state);
130 static struct ce_attr host_ce_config_wlan[] = {
131 /* CE0: host->target HTC control and raw streams */
133 .flags = CE_ATTR_FLAGS,
137 .send_cb = ath10k_pci_htc_tx_cb,
140 /* CE1: target->host HTT + HTC control */
142 .flags = CE_ATTR_FLAGS,
145 .dest_nentries = 512,
146 .recv_cb = ath10k_pci_htt_htc_rx_cb,
149 /* CE2: target->host WMI */
151 .flags = CE_ATTR_FLAGS,
154 .dest_nentries = 128,
155 .recv_cb = ath10k_pci_htc_rx_cb,
158 /* CE3: host->target WMI */
160 .flags = CE_ATTR_FLAGS,
164 .send_cb = ath10k_pci_htc_tx_cb,
167 /* CE4: host->target HTT */
169 .flags = CE_ATTR_FLAGS | CE_ATTR_DIS_INTR,
170 .src_nentries = CE_HTT_H2T_MSG_SRC_NENTRIES,
173 .send_cb = ath10k_pci_htt_tx_cb,
176 /* CE5: target->host HTT (HIF->HTT) */
178 .flags = CE_ATTR_FLAGS,
181 .dest_nentries = 512,
182 .recv_cb = ath10k_pci_htt_rx_cb,
185 /* CE6: target autonomous hif_memcpy */
187 .flags = CE_ATTR_FLAGS,
193 /* CE7: ce_diag, the Diagnostic Window */
195 .flags = CE_ATTR_FLAGS,
197 .src_sz_max = DIAG_TRANSFER_LIMIT,
201 /* CE8: target->host pktlog */
203 .flags = CE_ATTR_FLAGS,
206 .dest_nentries = 128,
207 .recv_cb = ath10k_pci_pktlog_rx_cb,
210 /* CE9 target autonomous qcache memcpy */
212 .flags = CE_ATTR_FLAGS,
218 /* CE10: target autonomous hif memcpy */
220 .flags = CE_ATTR_FLAGS,
226 /* CE11: target autonomous hif memcpy */
228 .flags = CE_ATTR_FLAGS,
235 /* Target firmware's Copy Engine configuration. */
236 static struct ce_pipe_config target_ce_config_wlan[] = {
237 /* CE0: host->target HTC control and raw streams */
239 .pipenum = __cpu_to_le32(0),
240 .pipedir = __cpu_to_le32(PIPEDIR_OUT),
241 .nentries = __cpu_to_le32(32),
242 .nbytes_max = __cpu_to_le32(256),
243 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
244 .reserved = __cpu_to_le32(0),
247 /* CE1: target->host HTT + HTC control */
249 .pipenum = __cpu_to_le32(1),
250 .pipedir = __cpu_to_le32(PIPEDIR_IN),
251 .nentries = __cpu_to_le32(32),
252 .nbytes_max = __cpu_to_le32(2048),
253 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
254 .reserved = __cpu_to_le32(0),
257 /* CE2: target->host WMI */
259 .pipenum = __cpu_to_le32(2),
260 .pipedir = __cpu_to_le32(PIPEDIR_IN),
261 .nentries = __cpu_to_le32(64),
262 .nbytes_max = __cpu_to_le32(2048),
263 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
264 .reserved = __cpu_to_le32(0),
267 /* CE3: host->target WMI */
269 .pipenum = __cpu_to_le32(3),
270 .pipedir = __cpu_to_le32(PIPEDIR_OUT),
271 .nentries = __cpu_to_le32(32),
272 .nbytes_max = __cpu_to_le32(2048),
273 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
274 .reserved = __cpu_to_le32(0),
277 /* CE4: host->target HTT */
279 .pipenum = __cpu_to_le32(4),
280 .pipedir = __cpu_to_le32(PIPEDIR_OUT),
281 .nentries = __cpu_to_le32(256),
282 .nbytes_max = __cpu_to_le32(256),
283 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
284 .reserved = __cpu_to_le32(0),
287 /* NB: 50% of src nentries, since tx has 2 frags */
289 /* CE5: target->host HTT (HIF->HTT) */
291 .pipenum = __cpu_to_le32(5),
292 .pipedir = __cpu_to_le32(PIPEDIR_IN),
293 .nentries = __cpu_to_le32(32),
294 .nbytes_max = __cpu_to_le32(512),
295 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
296 .reserved = __cpu_to_le32(0),
299 /* CE6: Reserved for target autonomous hif_memcpy */
301 .pipenum = __cpu_to_le32(6),
302 .pipedir = __cpu_to_le32(PIPEDIR_INOUT),
303 .nentries = __cpu_to_le32(32),
304 .nbytes_max = __cpu_to_le32(4096),
305 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
306 .reserved = __cpu_to_le32(0),
309 /* CE7 used only by Host */
311 .pipenum = __cpu_to_le32(7),
312 .pipedir = __cpu_to_le32(PIPEDIR_INOUT),
313 .nentries = __cpu_to_le32(0),
314 .nbytes_max = __cpu_to_le32(0),
315 .flags = __cpu_to_le32(0),
316 .reserved = __cpu_to_le32(0),
319 /* CE8 target->host packtlog */
321 .pipenum = __cpu_to_le32(8),
322 .pipedir = __cpu_to_le32(PIPEDIR_IN),
323 .nentries = __cpu_to_le32(64),
324 .nbytes_max = __cpu_to_le32(2048),
325 .flags = __cpu_to_le32(CE_ATTR_FLAGS | CE_ATTR_DIS_INTR),
326 .reserved = __cpu_to_le32(0),
329 /* CE9 target autonomous qcache memcpy */
331 .pipenum = __cpu_to_le32(9),
332 .pipedir = __cpu_to_le32(PIPEDIR_INOUT),
333 .nentries = __cpu_to_le32(32),
334 .nbytes_max = __cpu_to_le32(2048),
335 .flags = __cpu_to_le32(CE_ATTR_FLAGS | CE_ATTR_DIS_INTR),
336 .reserved = __cpu_to_le32(0),
339 /* It not necessary to send target wlan configuration for CE10 & CE11
340 * as these CEs are not actively used in target.
345 * Map from service/endpoint to Copy Engine.
346 * This table is derived from the CE_PCI TABLE, above.
347 * It is passed to the Target at startup for use by firmware.
349 static struct service_to_pipe target_service_to_ce_map_wlan[] = {
351 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VO),
352 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
356 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VO),
357 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
361 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BK),
362 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
366 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BK),
367 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
371 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BE),
372 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
376 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BE),
377 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
381 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VI),
382 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
386 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VI),
387 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
391 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_CONTROL),
392 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
396 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_CONTROL),
397 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
401 __cpu_to_le32(ATH10K_HTC_SVC_ID_RSVD_CTRL),
402 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
406 __cpu_to_le32(ATH10K_HTC_SVC_ID_RSVD_CTRL),
407 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
411 __cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS),
412 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
416 __cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS),
417 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
421 __cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA_MSG),
422 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
426 __cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA_MSG),
427 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
431 /* (Additions here) */
440 static bool ath10k_pci_is_awake(struct ath10k *ar)
442 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
443 u32 val = ioread32(ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
446 return RTC_STATE_V_GET(val) == RTC_STATE_V_ON;
449 static void __ath10k_pci_wake(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 wake reg refcount %lu awake %d\n",
456 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
458 iowrite32(PCIE_SOC_WAKE_V_MASK,
459 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
460 PCIE_SOC_WAKE_ADDRESS);
463 static void __ath10k_pci_sleep(struct ath10k *ar)
465 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
467 lockdep_assert_held(&ar_pci->ps_lock);
469 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps sleep reg refcount %lu awake %d\n",
470 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
472 iowrite32(PCIE_SOC_WAKE_RESET,
473 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
474 PCIE_SOC_WAKE_ADDRESS);
475 ar_pci->ps_awake = false;
478 static int ath10k_pci_wake_wait(struct ath10k *ar)
483 while (tot_delay < PCIE_WAKE_TIMEOUT) {
484 if (ath10k_pci_is_awake(ar)) {
485 if (tot_delay > PCIE_WAKE_LATE_US)
486 ath10k_warn(ar, "device wakeup took %d ms which is unusually long, otherwise it works normally.\n",
492 tot_delay += curr_delay;
501 static int ath10k_pci_force_wake(struct ath10k *ar)
503 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
510 spin_lock_irqsave(&ar_pci->ps_lock, flags);
512 if (!ar_pci->ps_awake) {
513 iowrite32(PCIE_SOC_WAKE_V_MASK,
514 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
515 PCIE_SOC_WAKE_ADDRESS);
517 ret = ath10k_pci_wake_wait(ar);
519 ar_pci->ps_awake = true;
522 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
527 static void ath10k_pci_force_sleep(struct ath10k *ar)
529 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
532 spin_lock_irqsave(&ar_pci->ps_lock, flags);
534 iowrite32(PCIE_SOC_WAKE_RESET,
535 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
536 PCIE_SOC_WAKE_ADDRESS);
537 ar_pci->ps_awake = false;
539 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
542 static int ath10k_pci_wake(struct ath10k *ar)
544 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
548 if (ar_pci->pci_ps == 0)
551 spin_lock_irqsave(&ar_pci->ps_lock, flags);
553 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps wake refcount %lu awake %d\n",
554 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
556 /* This function can be called very frequently. To avoid excessive
557 * CPU stalls for MMIO reads use a cache var to hold the device state.
559 if (!ar_pci->ps_awake) {
560 __ath10k_pci_wake(ar);
562 ret = ath10k_pci_wake_wait(ar);
564 ar_pci->ps_awake = true;
568 ar_pci->ps_wake_refcount++;
569 WARN_ON(ar_pci->ps_wake_refcount == 0);
572 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
577 static void ath10k_pci_sleep(struct ath10k *ar)
579 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
582 if (ar_pci->pci_ps == 0)
585 spin_lock_irqsave(&ar_pci->ps_lock, flags);
587 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps sleep refcount %lu awake %d\n",
588 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
590 if (WARN_ON(ar_pci->ps_wake_refcount == 0))
593 ar_pci->ps_wake_refcount--;
595 mod_timer(&ar_pci->ps_timer, jiffies +
596 msecs_to_jiffies(ATH10K_PCI_SLEEP_GRACE_PERIOD_MSEC));
599 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
602 static void ath10k_pci_ps_timer(struct timer_list *t)
604 struct ath10k_pci *ar_pci = from_timer(ar_pci, t, ps_timer);
605 struct ath10k *ar = ar_pci->ar;
608 spin_lock_irqsave(&ar_pci->ps_lock, flags);
610 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps timer refcount %lu awake %d\n",
611 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
613 if (ar_pci->ps_wake_refcount > 0)
616 __ath10k_pci_sleep(ar);
619 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
622 static void ath10k_pci_sleep_sync(struct ath10k *ar)
624 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
627 if (ar_pci->pci_ps == 0) {
628 ath10k_pci_force_sleep(ar);
632 del_timer_sync(&ar_pci->ps_timer);
634 spin_lock_irqsave(&ar_pci->ps_lock, flags);
635 WARN_ON(ar_pci->ps_wake_refcount > 0);
636 __ath10k_pci_sleep(ar);
637 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
640 static void ath10k_bus_pci_write32(struct ath10k *ar, u32 offset, u32 value)
642 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
645 if (unlikely(offset + sizeof(value) > ar_pci->mem_len)) {
646 ath10k_warn(ar, "refusing to write mmio out of bounds at 0x%08x - 0x%08zx (max 0x%08zx)\n",
647 offset, offset + sizeof(value), ar_pci->mem_len);
651 ret = ath10k_pci_wake(ar);
653 ath10k_warn(ar, "failed to wake target for write32 of 0x%08x at 0x%08x: %d\n",
658 iowrite32(value, ar_pci->mem + offset);
659 ath10k_pci_sleep(ar);
662 static u32 ath10k_bus_pci_read32(struct ath10k *ar, u32 offset)
664 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
668 if (unlikely(offset + sizeof(val) > ar_pci->mem_len)) {
669 ath10k_warn(ar, "refusing to read mmio out of bounds at 0x%08x - 0x%08zx (max 0x%08zx)\n",
670 offset, offset + sizeof(val), ar_pci->mem_len);
674 ret = ath10k_pci_wake(ar);
676 ath10k_warn(ar, "failed to wake target for read32 at 0x%08x: %d\n",
681 val = ioread32(ar_pci->mem + offset);
682 ath10k_pci_sleep(ar);
687 inline void ath10k_pci_write32(struct ath10k *ar, u32 offset, u32 value)
689 struct ath10k_ce *ce = ath10k_ce_priv(ar);
691 ce->bus_ops->write32(ar, offset, value);
694 inline u32 ath10k_pci_read32(struct ath10k *ar, u32 offset)
696 struct ath10k_ce *ce = ath10k_ce_priv(ar);
698 return ce->bus_ops->read32(ar, offset);
701 u32 ath10k_pci_soc_read32(struct ath10k *ar, u32 addr)
703 return ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS + addr);
706 void ath10k_pci_soc_write32(struct ath10k *ar, u32 addr, u32 val)
708 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + addr, val);
711 u32 ath10k_pci_reg_read32(struct ath10k *ar, u32 addr)
713 return ath10k_pci_read32(ar, PCIE_LOCAL_BASE_ADDRESS + addr);
716 void ath10k_pci_reg_write32(struct ath10k *ar, u32 addr, u32 val)
718 ath10k_pci_write32(ar, PCIE_LOCAL_BASE_ADDRESS + addr, val);
721 bool ath10k_pci_irq_pending(struct ath10k *ar)
725 /* Check if the shared legacy irq is for us */
726 cause = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
727 PCIE_INTR_CAUSE_ADDRESS);
728 if (cause & (PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL))
734 void ath10k_pci_disable_and_clear_legacy_irq(struct ath10k *ar)
736 /* IMPORTANT: INTR_CLR register has to be set after
737 * INTR_ENABLE is set to 0, otherwise interrupt can not be
740 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
742 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_CLR_ADDRESS,
743 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
745 /* IMPORTANT: this extra read transaction is required to
746 * flush the posted write buffer.
748 (void)ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
749 PCIE_INTR_ENABLE_ADDRESS);
752 void ath10k_pci_enable_legacy_irq(struct ath10k *ar)
754 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
755 PCIE_INTR_ENABLE_ADDRESS,
756 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
758 /* IMPORTANT: this extra read transaction is required to
759 * flush the posted write buffer.
761 (void)ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
762 PCIE_INTR_ENABLE_ADDRESS);
765 static inline const char *ath10k_pci_get_irq_method(struct ath10k *ar)
767 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
769 if (ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_MSI)
775 static int __ath10k_pci_rx_post_buf(struct ath10k_pci_pipe *pipe)
777 struct ath10k *ar = pipe->hif_ce_state;
778 struct ath10k_ce *ce = ath10k_ce_priv(ar);
779 struct ath10k_ce_pipe *ce_pipe = pipe->ce_hdl;
784 skb = dev_alloc_skb(pipe->buf_sz);
788 WARN_ONCE((unsigned long)skb->data & 3, "unaligned skb");
790 paddr = dma_map_single(ar->dev, skb->data,
791 skb->len + skb_tailroom(skb),
793 if (unlikely(dma_mapping_error(ar->dev, paddr))) {
794 ath10k_warn(ar, "failed to dma map pci rx buf\n");
795 dev_kfree_skb_any(skb);
799 ATH10K_SKB_RXCB(skb)->paddr = paddr;
801 spin_lock_bh(&ce->ce_lock);
802 ret = ce_pipe->ops->ce_rx_post_buf(ce_pipe, skb, paddr);
803 spin_unlock_bh(&ce->ce_lock);
805 dma_unmap_single(ar->dev, paddr, skb->len + skb_tailroom(skb),
807 dev_kfree_skb_any(skb);
814 static void ath10k_pci_rx_post_pipe(struct ath10k_pci_pipe *pipe)
816 struct ath10k *ar = pipe->hif_ce_state;
817 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
818 struct ath10k_ce *ce = ath10k_ce_priv(ar);
819 struct ath10k_ce_pipe *ce_pipe = pipe->ce_hdl;
822 if (pipe->buf_sz == 0)
825 if (!ce_pipe->dest_ring)
828 spin_lock_bh(&ce->ce_lock);
829 num = __ath10k_ce_rx_num_free_bufs(ce_pipe);
830 spin_unlock_bh(&ce->ce_lock);
833 ret = __ath10k_pci_rx_post_buf(pipe);
837 ath10k_warn(ar, "failed to post pci rx buf: %d\n", ret);
838 mod_timer(&ar_pci->rx_post_retry, jiffies +
839 ATH10K_PCI_RX_POST_RETRY_MS);
846 void ath10k_pci_rx_post(struct ath10k *ar)
848 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
851 for (i = 0; i < CE_COUNT; i++)
852 ath10k_pci_rx_post_pipe(&ar_pci->pipe_info[i]);
855 void ath10k_pci_rx_replenish_retry(struct timer_list *t)
857 struct ath10k_pci *ar_pci = from_timer(ar_pci, t, rx_post_retry);
858 struct ath10k *ar = ar_pci->ar;
860 ath10k_pci_rx_post(ar);
863 static u32 ath10k_pci_qca988x_targ_cpu_to_ce_addr(struct ath10k *ar, u32 addr)
865 u32 val = 0, region = addr & 0xfffff;
867 val = (ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + CORE_CTRL_ADDRESS)
869 val |= 0x100000 | region;
873 static u32 ath10k_pci_qca99x0_targ_cpu_to_ce_addr(struct ath10k *ar, u32 addr)
875 u32 val = 0, region = addr & 0xfffff;
877 val = ath10k_pci_read32(ar, PCIE_BAR_REG_ADDRESS);
878 val |= 0x100000 | region;
882 static u32 ath10k_pci_targ_cpu_to_ce_addr(struct ath10k *ar, u32 addr)
884 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
886 if (WARN_ON_ONCE(!ar_pci->targ_cpu_to_ce_addr))
889 return ar_pci->targ_cpu_to_ce_addr(ar, addr);
893 * Diagnostic read/write access is provided for startup/config/debug usage.
894 * Caller must guarantee proper alignment, when applicable, and single user
897 static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data,
900 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
901 struct ath10k_ce *ce = ath10k_ce_priv(ar);
904 unsigned int completed_nbytes, alloc_nbytes, remaining_bytes;
905 struct ath10k_ce_pipe *ce_diag;
906 /* Host buffer address in CE space */
908 dma_addr_t ce_data_base = 0;
909 void *data_buf = NULL;
912 spin_lock_bh(&ce->ce_lock);
914 ce_diag = ar_pci->ce_diag;
917 * Allocate a temporary bounce buffer to hold caller's data
918 * to be DMA'ed from Target. This guarantees
919 * 1) 4-byte alignment
920 * 2) Buffer in DMA-able space
922 alloc_nbytes = min_t(unsigned int, nbytes, DIAG_TRANSFER_LIMIT);
924 data_buf = (unsigned char *)dma_zalloc_coherent(ar->dev,
934 remaining_bytes = nbytes;
935 ce_data = ce_data_base;
936 while (remaining_bytes) {
937 nbytes = min_t(unsigned int, remaining_bytes,
938 DIAG_TRANSFER_LIMIT);
940 ret = ce_diag->ops->ce_rx_post_buf(ce_diag, &ce_data, ce_data);
944 /* Request CE to send from Target(!) address to Host buffer */
946 * The address supplied by the caller is in the
947 * Target CPU virtual address space.
949 * In order to use this address with the diagnostic CE,
950 * convert it from Target CPU virtual address space
951 * to CE address space
953 address = ath10k_pci_targ_cpu_to_ce_addr(ar, address);
955 ret = ath10k_ce_send_nolock(ce_diag, NULL, (u32)address, nbytes, 0,
961 while (ath10k_ce_completed_send_next_nolock(ce_diag,
964 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
971 while (ath10k_ce_completed_recv_next_nolock(ce_diag,
977 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
983 if (nbytes != completed_nbytes) {
988 if (*buf != ce_data) {
993 remaining_bytes -= nbytes;
994 memcpy(data, data_buf, nbytes);
1003 dma_free_coherent(ar->dev, alloc_nbytes, data_buf,
1006 spin_unlock_bh(&ce->ce_lock);
1011 static int ath10k_pci_diag_read32(struct ath10k *ar, u32 address, u32 *value)
1016 ret = ath10k_pci_diag_read_mem(ar, address, &val, sizeof(val));
1017 *value = __le32_to_cpu(val);
1022 static int __ath10k_pci_diag_read_hi(struct ath10k *ar, void *dest,
1025 u32 host_addr, addr;
1028 host_addr = host_interest_item_address(src);
1030 ret = ath10k_pci_diag_read32(ar, host_addr, &addr);
1032 ath10k_warn(ar, "failed to get memcpy hi address for firmware address %d: %d\n",
1037 ret = ath10k_pci_diag_read_mem(ar, addr, dest, len);
1039 ath10k_warn(ar, "failed to memcpy firmware memory from %d (%d B): %d\n",
1047 #define ath10k_pci_diag_read_hi(ar, dest, src, len) \
1048 __ath10k_pci_diag_read_hi(ar, dest, HI_ITEM(src), len)
1050 int ath10k_pci_diag_write_mem(struct ath10k *ar, u32 address,
1051 const void *data, int nbytes)
1053 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1054 struct ath10k_ce *ce = ath10k_ce_priv(ar);
1057 unsigned int completed_nbytes, alloc_nbytes, remaining_bytes;
1058 struct ath10k_ce_pipe *ce_diag;
1059 void *data_buf = NULL;
1060 dma_addr_t ce_data_base = 0;
1063 spin_lock_bh(&ce->ce_lock);
1065 ce_diag = ar_pci->ce_diag;
1068 * Allocate a temporary bounce buffer to hold caller's data
1069 * to be DMA'ed to Target. This guarantees
1070 * 1) 4-byte alignment
1071 * 2) Buffer in DMA-able space
1073 alloc_nbytes = min_t(unsigned int, nbytes, DIAG_TRANSFER_LIMIT);
1075 data_buf = (unsigned char *)dma_alloc_coherent(ar->dev,
1085 * The address supplied by the caller is in the
1086 * Target CPU virtual address space.
1088 * In order to use this address with the diagnostic CE,
1090 * Target CPU virtual address space
1094 address = ath10k_pci_targ_cpu_to_ce_addr(ar, address);
1096 remaining_bytes = nbytes;
1097 while (remaining_bytes) {
1098 /* FIXME: check cast */
1099 nbytes = min_t(int, remaining_bytes, DIAG_TRANSFER_LIMIT);
1101 /* Copy caller's data to allocated DMA buf */
1102 memcpy(data_buf, data, nbytes);
1104 /* Set up to receive directly into Target(!) address */
1105 ret = ce_diag->ops->ce_rx_post_buf(ce_diag, &address, address);
1110 * Request CE to send caller-supplied data that
1111 * was copied to bounce buffer to Target(!) address.
1113 ret = ath10k_ce_send_nolock(ce_diag, NULL, ce_data_base,
1119 while (ath10k_ce_completed_send_next_nolock(ce_diag,
1123 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
1130 while (ath10k_ce_completed_recv_next_nolock(ce_diag,
1136 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
1142 if (nbytes != completed_nbytes) {
1147 if (*buf != address) {
1152 remaining_bytes -= nbytes;
1159 dma_free_coherent(ar->dev, alloc_nbytes, data_buf,
1164 ath10k_warn(ar, "failed to write diag value at 0x%x: %d\n",
1167 spin_unlock_bh(&ce->ce_lock);
1172 static int ath10k_pci_diag_write32(struct ath10k *ar, u32 address, u32 value)
1174 __le32 val = __cpu_to_le32(value);
1176 return ath10k_pci_diag_write_mem(ar, address, &val, sizeof(val));
1179 /* Called by lower (CE) layer when a send to Target completes. */
1180 static void ath10k_pci_htc_tx_cb(struct ath10k_ce_pipe *ce_state)
1182 struct ath10k *ar = ce_state->ar;
1183 struct sk_buff_head list;
1184 struct sk_buff *skb;
1186 __skb_queue_head_init(&list);
1187 while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) {
1188 /* no need to call tx completion for NULL pointers */
1192 __skb_queue_tail(&list, skb);
1195 while ((skb = __skb_dequeue(&list)))
1196 ath10k_htc_tx_completion_handler(ar, skb);
1199 static void ath10k_pci_process_rx_cb(struct ath10k_ce_pipe *ce_state,
1200 void (*callback)(struct ath10k *ar,
1201 struct sk_buff *skb))
1203 struct ath10k *ar = ce_state->ar;
1204 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1205 struct ath10k_pci_pipe *pipe_info = &ar_pci->pipe_info[ce_state->id];
1206 struct sk_buff *skb;
1207 struct sk_buff_head list;
1208 void *transfer_context;
1209 unsigned int nbytes, max_nbytes;
1211 __skb_queue_head_init(&list);
1212 while (ath10k_ce_completed_recv_next(ce_state, &transfer_context,
1214 skb = transfer_context;
1215 max_nbytes = skb->len + skb_tailroom(skb);
1216 dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1217 max_nbytes, DMA_FROM_DEVICE);
1219 if (unlikely(max_nbytes < nbytes)) {
1220 ath10k_warn(ar, "rxed more than expected (nbytes %d, max %d)",
1221 nbytes, max_nbytes);
1222 dev_kfree_skb_any(skb);
1226 skb_put(skb, nbytes);
1227 __skb_queue_tail(&list, skb);
1230 while ((skb = __skb_dequeue(&list))) {
1231 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci rx ce pipe %d len %d\n",
1232 ce_state->id, skb->len);
1233 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci rx: ",
1234 skb->data, skb->len);
1239 ath10k_pci_rx_post_pipe(pipe_info);
1242 static void ath10k_pci_process_htt_rx_cb(struct ath10k_ce_pipe *ce_state,
1243 void (*callback)(struct ath10k *ar,
1244 struct sk_buff *skb))
1246 struct ath10k *ar = ce_state->ar;
1247 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1248 struct ath10k_pci_pipe *pipe_info = &ar_pci->pipe_info[ce_state->id];
1249 struct ath10k_ce_pipe *ce_pipe = pipe_info->ce_hdl;
1250 struct sk_buff *skb;
1251 struct sk_buff_head list;
1252 void *transfer_context;
1253 unsigned int nbytes, max_nbytes, nentries;
1256 /* No need to aquire ce_lock for CE5, since this is the only place CE5
1257 * is processed other than init and deinit. Before releasing CE5
1258 * buffers, interrupts are disabled. Thus CE5 access is serialized.
1260 __skb_queue_head_init(&list);
1261 while (ath10k_ce_completed_recv_next_nolock(ce_state, &transfer_context,
1263 skb = transfer_context;
1264 max_nbytes = skb->len + skb_tailroom(skb);
1266 if (unlikely(max_nbytes < nbytes)) {
1267 ath10k_warn(ar, "rxed more than expected (nbytes %d, max %d)",
1268 nbytes, max_nbytes);
1272 dma_sync_single_for_cpu(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1273 max_nbytes, DMA_FROM_DEVICE);
1274 skb_put(skb, nbytes);
1275 __skb_queue_tail(&list, skb);
1278 nentries = skb_queue_len(&list);
1279 while ((skb = __skb_dequeue(&list))) {
1280 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci rx ce pipe %d len %d\n",
1281 ce_state->id, skb->len);
1282 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci rx: ",
1283 skb->data, skb->len);
1285 orig_len = skb->len;
1287 skb_push(skb, orig_len - skb->len);
1288 skb_reset_tail_pointer(skb);
1291 /*let device gain the buffer again*/
1292 dma_sync_single_for_device(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1293 skb->len + skb_tailroom(skb),
1296 ath10k_ce_rx_update_write_idx(ce_pipe, nentries);
1299 /* Called by lower (CE) layer when data is received from the Target. */
1300 static void ath10k_pci_htc_rx_cb(struct ath10k_ce_pipe *ce_state)
1302 ath10k_pci_process_rx_cb(ce_state, ath10k_htc_rx_completion_handler);
1305 static void ath10k_pci_htt_htc_rx_cb(struct ath10k_ce_pipe *ce_state)
1307 /* CE4 polling needs to be done whenever CE pipe which transports
1308 * HTT Rx (target->host) is processed.
1310 ath10k_ce_per_engine_service(ce_state->ar, 4);
1312 ath10k_pci_process_rx_cb(ce_state, ath10k_htc_rx_completion_handler);
1315 /* Called by lower (CE) layer when data is received from the Target.
1316 * Only 10.4 firmware uses separate CE to transfer pktlog data.
1318 static void ath10k_pci_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state)
1320 ath10k_pci_process_rx_cb(ce_state,
1321 ath10k_htt_rx_pktlog_completion_handler);
1324 /* Called by lower (CE) layer when a send to HTT Target completes. */
1325 static void ath10k_pci_htt_tx_cb(struct ath10k_ce_pipe *ce_state)
1327 struct ath10k *ar = ce_state->ar;
1328 struct sk_buff *skb;
1330 while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) {
1331 /* no need to call tx completion for NULL pointers */
1335 dma_unmap_single(ar->dev, ATH10K_SKB_CB(skb)->paddr,
1336 skb->len, DMA_TO_DEVICE);
1337 ath10k_htt_hif_tx_complete(ar, skb);
1341 static void ath10k_pci_htt_rx_deliver(struct ath10k *ar, struct sk_buff *skb)
1343 skb_pull(skb, sizeof(struct ath10k_htc_hdr));
1344 ath10k_htt_t2h_msg_handler(ar, skb);
1347 /* Called by lower (CE) layer when HTT data is received from the Target. */
1348 static void ath10k_pci_htt_rx_cb(struct ath10k_ce_pipe *ce_state)
1350 /* CE4 polling needs to be done whenever CE pipe which transports
1351 * HTT Rx (target->host) is processed.
1353 ath10k_ce_per_engine_service(ce_state->ar, 4);
1355 ath10k_pci_process_htt_rx_cb(ce_state, ath10k_pci_htt_rx_deliver);
1358 int ath10k_pci_hif_tx_sg(struct ath10k *ar, u8 pipe_id,
1359 struct ath10k_hif_sg_item *items, int n_items)
1361 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1362 struct ath10k_ce *ce = ath10k_ce_priv(ar);
1363 struct ath10k_pci_pipe *pci_pipe = &ar_pci->pipe_info[pipe_id];
1364 struct ath10k_ce_pipe *ce_pipe = pci_pipe->ce_hdl;
1365 struct ath10k_ce_ring *src_ring = ce_pipe->src_ring;
1366 unsigned int nentries_mask;
1367 unsigned int sw_index;
1368 unsigned int write_index;
1371 spin_lock_bh(&ce->ce_lock);
1373 nentries_mask = src_ring->nentries_mask;
1374 sw_index = src_ring->sw_index;
1375 write_index = src_ring->write_index;
1377 if (unlikely(CE_RING_DELTA(nentries_mask,
1378 write_index, sw_index - 1) < n_items)) {
1383 for (i = 0; i < n_items - 1; i++) {
1384 ath10k_dbg(ar, ATH10K_DBG_PCI,
1385 "pci tx item %d paddr %pad len %d n_items %d\n",
1386 i, &items[i].paddr, items[i].len, n_items);
1387 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci tx data: ",
1388 items[i].vaddr, items[i].len);
1390 err = ath10k_ce_send_nolock(ce_pipe,
1391 items[i].transfer_context,
1394 items[i].transfer_id,
1395 CE_SEND_FLAG_GATHER);
1400 /* `i` is equal to `n_items -1` after for() */
1402 ath10k_dbg(ar, ATH10K_DBG_PCI,
1403 "pci tx item %d paddr %pad len %d n_items %d\n",
1404 i, &items[i].paddr, items[i].len, n_items);
1405 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci tx data: ",
1406 items[i].vaddr, items[i].len);
1408 err = ath10k_ce_send_nolock(ce_pipe,
1409 items[i].transfer_context,
1412 items[i].transfer_id,
1417 spin_unlock_bh(&ce->ce_lock);
1422 __ath10k_ce_send_revert(ce_pipe);
1424 spin_unlock_bh(&ce->ce_lock);
1428 int ath10k_pci_hif_diag_read(struct ath10k *ar, u32 address, void *buf,
1431 return ath10k_pci_diag_read_mem(ar, address, buf, buf_len);
1434 u16 ath10k_pci_hif_get_free_queue_number(struct ath10k *ar, u8 pipe)
1436 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1438 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif get free queue number\n");
1440 return ath10k_ce_num_free_src_entries(ar_pci->pipe_info[pipe].ce_hdl);
1443 static void ath10k_pci_dump_registers(struct ath10k *ar,
1444 struct ath10k_fw_crash_data *crash_data)
1446 __le32 reg_dump_values[REG_DUMP_COUNT_QCA988X] = {};
1449 lockdep_assert_held(&ar->data_lock);
1451 ret = ath10k_pci_diag_read_hi(ar, ®_dump_values[0],
1453 REG_DUMP_COUNT_QCA988X * sizeof(__le32));
1455 ath10k_err(ar, "failed to read firmware dump area: %d\n", ret);
1459 BUILD_BUG_ON(REG_DUMP_COUNT_QCA988X % 4);
1461 ath10k_err(ar, "firmware register dump:\n");
1462 for (i = 0; i < REG_DUMP_COUNT_QCA988X; i += 4)
1463 ath10k_err(ar, "[%02d]: 0x%08X 0x%08X 0x%08X 0x%08X\n",
1465 __le32_to_cpu(reg_dump_values[i]),
1466 __le32_to_cpu(reg_dump_values[i + 1]),
1467 __le32_to_cpu(reg_dump_values[i + 2]),
1468 __le32_to_cpu(reg_dump_values[i + 3]));
1473 for (i = 0; i < REG_DUMP_COUNT_QCA988X; i++)
1474 crash_data->registers[i] = reg_dump_values[i];
1477 static int ath10k_pci_dump_memory_section(struct ath10k *ar,
1478 const struct ath10k_mem_region *mem_region,
1479 u8 *buf, size_t buf_len)
1481 const struct ath10k_mem_section *cur_section, *next_section;
1482 unsigned int count, section_size, skip_size;
1485 if (!mem_region || !buf)
1488 cur_section = &mem_region->section_table.sections[0];
1490 if (mem_region->start > cur_section->start) {
1491 ath10k_warn(ar, "incorrect memdump region 0x%x with section start address 0x%x.\n",
1492 mem_region->start, cur_section->start);
1496 skip_size = cur_section->start - mem_region->start;
1498 /* fill the gap between the first register section and register
1501 for (i = 0; i < skip_size; i++) {
1502 *buf = ATH10K_MAGIC_NOT_COPIED;
1508 for (i = 0; cur_section != NULL; i++) {
1509 section_size = cur_section->end - cur_section->start;
1511 if (section_size <= 0) {
1512 ath10k_warn(ar, "incorrect ramdump format with start address 0x%x and stop address 0x%x\n",
1518 if ((i + 1) == mem_region->section_table.size) {
1520 next_section = NULL;
1523 next_section = cur_section + 1;
1525 if (cur_section->end > next_section->start) {
1526 ath10k_warn(ar, "next ramdump section 0x%x is smaller than current end address 0x%x\n",
1527 next_section->start,
1532 skip_size = next_section->start - cur_section->end;
1535 if (buf_len < (skip_size + section_size)) {
1536 ath10k_warn(ar, "ramdump buffer is too small: %zu\n", buf_len);
1540 buf_len -= skip_size + section_size;
1542 /* read section to dest memory */
1543 ret = ath10k_pci_diag_read_mem(ar, cur_section->start,
1546 ath10k_warn(ar, "failed to read ramdump from section 0x%x: %d\n",
1547 cur_section->start, ret);
1551 buf += section_size;
1552 count += section_size;
1554 /* fill in the gap between this section and the next */
1555 for (j = 0; j < skip_size; j++) {
1556 *buf = ATH10K_MAGIC_NOT_COPIED;
1563 /* this was the last section */
1566 cur_section = next_section;
1572 static int ath10k_pci_set_ram_config(struct ath10k *ar, u32 config)
1576 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
1577 FW_RAM_CONFIG_ADDRESS, config);
1579 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
1580 FW_RAM_CONFIG_ADDRESS);
1581 if (val != config) {
1582 ath10k_warn(ar, "failed to set RAM config from 0x%x to 0x%x\n",
1590 /* if an error happened returns < 0, otherwise the length */
1591 static int ath10k_pci_dump_memory_sram(struct ath10k *ar,
1592 const struct ath10k_mem_region *region,
1595 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1598 base_addr = ioread32(ar_pci->mem + QCA99X0_PCIE_BAR0_START_REG);
1599 base_addr += region->start;
1601 for (i = 0; i < region->len; i += 4) {
1602 iowrite32(base_addr + i, ar_pci->mem + QCA99X0_CPU_MEM_ADDR_REG);
1603 *(u32 *)(buf + i) = ioread32(ar_pci->mem + QCA99X0_CPU_MEM_DATA_REG);
1609 /* if an error happened returns < 0, otherwise the length */
1610 static int ath10k_pci_dump_memory_reg(struct ath10k *ar,
1611 const struct ath10k_mem_region *region,
1614 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1618 mutex_lock(&ar->conf_mutex);
1619 if (ar->state != ATH10K_STATE_ON) {
1620 ath10k_warn(ar, "Skipping pci_dump_memory_reg invalid state\n");
1625 for (i = 0; i < region->len; i += 4)
1626 *(u32 *)(buf + i) = ioread32(ar_pci->mem + region->start + i);
1630 mutex_unlock(&ar->conf_mutex);
1634 /* if an error happened returns < 0, otherwise the length */
1635 static int ath10k_pci_dump_memory_generic(struct ath10k *ar,
1636 const struct ath10k_mem_region *current_region,
1641 if (current_region->section_table.size > 0)
1642 /* Copy each section individually. */
1643 return ath10k_pci_dump_memory_section(ar,
1646 current_region->len);
1648 /* No individiual memory sections defined so we can
1649 * copy the entire memory region.
1651 ret = ath10k_pci_diag_read_mem(ar,
1652 current_region->start,
1654 current_region->len);
1656 ath10k_warn(ar, "failed to copy ramdump region %s: %d\n",
1657 current_region->name, ret);
1661 return current_region->len;
1664 static void ath10k_pci_dump_memory(struct ath10k *ar,
1665 struct ath10k_fw_crash_data *crash_data)
1667 const struct ath10k_hw_mem_layout *mem_layout;
1668 const struct ath10k_mem_region *current_region;
1669 struct ath10k_dump_ram_data_hdr *hdr;
1675 lockdep_assert_held(&ar->data_lock);
1680 mem_layout = ath10k_coredump_get_mem_layout(ar);
1684 current_region = &mem_layout->region_table.regions[0];
1686 buf = crash_data->ramdump_buf;
1687 buf_len = crash_data->ramdump_buf_len;
1689 memset(buf, 0, buf_len);
1691 for (i = 0; i < mem_layout->region_table.size; i++) {
1694 if (current_region->len > buf_len) {
1695 ath10k_warn(ar, "memory region %s size %d is larger that remaining ramdump buffer size %zu\n",
1696 current_region->name,
1697 current_region->len,
1702 /* To get IRAM dump, the host driver needs to switch target
1703 * ram config from DRAM to IRAM.
1705 if (current_region->type == ATH10K_MEM_REGION_TYPE_IRAM1 ||
1706 current_region->type == ATH10K_MEM_REGION_TYPE_IRAM2) {
1707 shift = current_region->start >> 20;
1709 ret = ath10k_pci_set_ram_config(ar, shift);
1711 ath10k_warn(ar, "failed to switch ram config to IRAM for section %s: %d\n",
1712 current_region->name, ret);
1717 /* Reserve space for the header. */
1719 buf += sizeof(*hdr);
1720 buf_len -= sizeof(*hdr);
1722 switch (current_region->type) {
1723 case ATH10K_MEM_REGION_TYPE_IOSRAM:
1724 count = ath10k_pci_dump_memory_sram(ar, current_region, buf);
1726 case ATH10K_MEM_REGION_TYPE_IOREG:
1727 ret = ath10k_pci_dump_memory_reg(ar, current_region, buf);
1734 ret = ath10k_pci_dump_memory_generic(ar, current_region, buf);
1742 hdr->region_type = cpu_to_le32(current_region->type);
1743 hdr->start = cpu_to_le32(current_region->start);
1744 hdr->length = cpu_to_le32(count);
1747 /* Note: the header remains, just with zero length. */
1757 static void ath10k_pci_fw_crashed_dump(struct ath10k *ar)
1759 struct ath10k_fw_crash_data *crash_data;
1760 char guid[UUID_STRING_LEN + 1];
1762 spin_lock_bh(&ar->data_lock);
1764 ar->stats.fw_crash_counter++;
1766 crash_data = ath10k_coredump_new(ar);
1769 scnprintf(guid, sizeof(guid), "%pUl", &crash_data->guid);
1771 scnprintf(guid, sizeof(guid), "n/a");
1773 ath10k_err(ar, "firmware crashed! (guid %s)\n", guid);
1774 ath10k_print_driver_info(ar);
1775 ath10k_pci_dump_registers(ar, crash_data);
1776 ath10k_ce_dump_registers(ar, crash_data);
1777 ath10k_pci_dump_memory(ar, crash_data);
1779 spin_unlock_bh(&ar->data_lock);
1781 queue_work(ar->workqueue, &ar->restart_work);
1784 void ath10k_pci_hif_send_complete_check(struct ath10k *ar, u8 pipe,
1787 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif send complete check\n");
1792 * Decide whether to actually poll for completions, or just
1793 * wait for a later chance.
1794 * If there seem to be plenty of resources left, then just wait
1795 * since checking involves reading a CE register, which is a
1796 * relatively expensive operation.
1798 resources = ath10k_pci_hif_get_free_queue_number(ar, pipe);
1801 * If at least 50% of the total resources are still available,
1802 * don't bother checking again yet.
1804 if (resources > (host_ce_config_wlan[pipe].src_nentries >> 1))
1807 ath10k_ce_per_engine_service(ar, pipe);
1810 static void ath10k_pci_rx_retry_sync(struct ath10k *ar)
1812 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1814 del_timer_sync(&ar_pci->rx_post_retry);
1817 int ath10k_pci_hif_map_service_to_pipe(struct ath10k *ar, u16 service_id,
1818 u8 *ul_pipe, u8 *dl_pipe)
1820 const struct service_to_pipe *entry;
1821 bool ul_set = false, dl_set = false;
1824 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif map service\n");
1826 for (i = 0; i < ARRAY_SIZE(target_service_to_ce_map_wlan); i++) {
1827 entry = &target_service_to_ce_map_wlan[i];
1829 if (__le32_to_cpu(entry->service_id) != service_id)
1832 switch (__le32_to_cpu(entry->pipedir)) {
1837 *dl_pipe = __le32_to_cpu(entry->pipenum);
1842 *ul_pipe = __le32_to_cpu(entry->pipenum);
1848 *dl_pipe = __le32_to_cpu(entry->pipenum);
1849 *ul_pipe = __le32_to_cpu(entry->pipenum);
1856 if (WARN_ON(!ul_set || !dl_set))
1862 void ath10k_pci_hif_get_default_pipe(struct ath10k *ar,
1863 u8 *ul_pipe, u8 *dl_pipe)
1865 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif get default pipe\n");
1867 (void)ath10k_pci_hif_map_service_to_pipe(ar,
1868 ATH10K_HTC_SVC_ID_RSVD_CTRL,
1872 void ath10k_pci_irq_msi_fw_mask(struct ath10k *ar)
1876 switch (ar->hw_rev) {
1877 case ATH10K_HW_QCA988X:
1878 case ATH10K_HW_QCA9887:
1879 case ATH10K_HW_QCA6174:
1880 case ATH10K_HW_QCA9377:
1881 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
1883 val &= ~CORE_CTRL_PCIE_REG_31_MASK;
1884 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
1885 CORE_CTRL_ADDRESS, val);
1887 case ATH10K_HW_QCA99X0:
1888 case ATH10K_HW_QCA9984:
1889 case ATH10K_HW_QCA9888:
1890 case ATH10K_HW_QCA4019:
1891 /* TODO: Find appropriate register configuration for QCA99X0
1895 case ATH10K_HW_WCN3990:
1900 static void ath10k_pci_irq_msi_fw_unmask(struct ath10k *ar)
1904 switch (ar->hw_rev) {
1905 case ATH10K_HW_QCA988X:
1906 case ATH10K_HW_QCA9887:
1907 case ATH10K_HW_QCA6174:
1908 case ATH10K_HW_QCA9377:
1909 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
1911 val |= CORE_CTRL_PCIE_REG_31_MASK;
1912 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
1913 CORE_CTRL_ADDRESS, val);
1915 case ATH10K_HW_QCA99X0:
1916 case ATH10K_HW_QCA9984:
1917 case ATH10K_HW_QCA9888:
1918 case ATH10K_HW_QCA4019:
1919 /* TODO: Find appropriate register configuration for QCA99X0
1920 * to unmask irq/MSI.
1923 case ATH10K_HW_WCN3990:
1928 static void ath10k_pci_irq_disable(struct ath10k *ar)
1930 ath10k_ce_disable_interrupts(ar);
1931 ath10k_pci_disable_and_clear_legacy_irq(ar);
1932 ath10k_pci_irq_msi_fw_mask(ar);
1935 static void ath10k_pci_irq_sync(struct ath10k *ar)
1937 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1939 synchronize_irq(ar_pci->pdev->irq);
1942 static void ath10k_pci_irq_enable(struct ath10k *ar)
1944 ath10k_ce_enable_interrupts(ar);
1945 ath10k_pci_enable_legacy_irq(ar);
1946 ath10k_pci_irq_msi_fw_unmask(ar);
1949 static int ath10k_pci_hif_start(struct ath10k *ar)
1951 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1953 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif start\n");
1955 napi_enable(&ar->napi);
1957 ath10k_pci_irq_enable(ar);
1958 ath10k_pci_rx_post(ar);
1960 pcie_capability_write_word(ar_pci->pdev, PCI_EXP_LNKCTL,
1966 static void ath10k_pci_rx_pipe_cleanup(struct ath10k_pci_pipe *pci_pipe)
1969 struct ath10k_ce_pipe *ce_pipe;
1970 struct ath10k_ce_ring *ce_ring;
1971 struct sk_buff *skb;
1974 ar = pci_pipe->hif_ce_state;
1975 ce_pipe = pci_pipe->ce_hdl;
1976 ce_ring = ce_pipe->dest_ring;
1981 if (!pci_pipe->buf_sz)
1984 for (i = 0; i < ce_ring->nentries; i++) {
1985 skb = ce_ring->per_transfer_context[i];
1989 ce_ring->per_transfer_context[i] = NULL;
1991 dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1992 skb->len + skb_tailroom(skb),
1994 dev_kfree_skb_any(skb);
1998 static void ath10k_pci_tx_pipe_cleanup(struct ath10k_pci_pipe *pci_pipe)
2001 struct ath10k_ce_pipe *ce_pipe;
2002 struct ath10k_ce_ring *ce_ring;
2003 struct sk_buff *skb;
2006 ar = pci_pipe->hif_ce_state;
2007 ce_pipe = pci_pipe->ce_hdl;
2008 ce_ring = ce_pipe->src_ring;
2013 if (!pci_pipe->buf_sz)
2016 for (i = 0; i < ce_ring->nentries; i++) {
2017 skb = ce_ring->per_transfer_context[i];
2021 ce_ring->per_transfer_context[i] = NULL;
2023 ath10k_htc_tx_completion_handler(ar, skb);
2028 * Cleanup residual buffers for device shutdown:
2029 * buffers that were enqueued for receive
2030 * buffers that were to be sent
2031 * Note: Buffers that had completed but which were
2032 * not yet processed are on a completion queue. They
2033 * are handled when the completion thread shuts down.
2035 static void ath10k_pci_buffer_cleanup(struct ath10k *ar)
2037 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2040 for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) {
2041 struct ath10k_pci_pipe *pipe_info;
2043 pipe_info = &ar_pci->pipe_info[pipe_num];
2044 ath10k_pci_rx_pipe_cleanup(pipe_info);
2045 ath10k_pci_tx_pipe_cleanup(pipe_info);
2049 void ath10k_pci_ce_deinit(struct ath10k *ar)
2053 for (i = 0; i < CE_COUNT; i++)
2054 ath10k_ce_deinit_pipe(ar, i);
2057 void ath10k_pci_flush(struct ath10k *ar)
2059 ath10k_pci_rx_retry_sync(ar);
2060 ath10k_pci_buffer_cleanup(ar);
2063 static void ath10k_pci_hif_stop(struct ath10k *ar)
2065 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2066 unsigned long flags;
2068 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif stop\n");
2070 ath10k_pci_irq_disable(ar);
2071 ath10k_pci_irq_sync(ar);
2072 napi_synchronize(&ar->napi);
2073 napi_disable(&ar->napi);
2075 /* Most likely the device has HTT Rx ring configured. The only way to
2076 * prevent the device from accessing (and possible corrupting) host
2077 * memory is to reset the chip now.
2079 * There's also no known way of masking MSI interrupts on the device.
2080 * For ranged MSI the CE-related interrupts can be masked. However
2081 * regardless how many MSI interrupts are assigned the first one
2082 * is always used for firmware indications (crashes) and cannot be
2083 * masked. To prevent the device from asserting the interrupt reset it
2084 * before proceeding with cleanup.
2086 ath10k_pci_safe_chip_reset(ar);
2088 ath10k_pci_flush(ar);
2090 spin_lock_irqsave(&ar_pci->ps_lock, flags);
2091 WARN_ON(ar_pci->ps_wake_refcount > 0);
2092 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
2095 int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar,
2096 void *req, u32 req_len,
2097 void *resp, u32 *resp_len)
2099 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2100 struct ath10k_pci_pipe *pci_tx = &ar_pci->pipe_info[BMI_CE_NUM_TO_TARG];
2101 struct ath10k_pci_pipe *pci_rx = &ar_pci->pipe_info[BMI_CE_NUM_TO_HOST];
2102 struct ath10k_ce_pipe *ce_tx = pci_tx->ce_hdl;
2103 struct ath10k_ce_pipe *ce_rx = pci_rx->ce_hdl;
2104 dma_addr_t req_paddr = 0;
2105 dma_addr_t resp_paddr = 0;
2106 struct bmi_xfer xfer = {};
2107 void *treq, *tresp = NULL;
2112 if (resp && !resp_len)
2115 if (resp && resp_len && *resp_len == 0)
2118 treq = kmemdup(req, req_len, GFP_KERNEL);
2122 req_paddr = dma_map_single(ar->dev, treq, req_len, DMA_TO_DEVICE);
2123 ret = dma_mapping_error(ar->dev, req_paddr);
2129 if (resp && resp_len) {
2130 tresp = kzalloc(*resp_len, GFP_KERNEL);
2136 resp_paddr = dma_map_single(ar->dev, tresp, *resp_len,
2138 ret = dma_mapping_error(ar->dev, resp_paddr);
2144 xfer.wait_for_resp = true;
2147 ath10k_ce_rx_post_buf(ce_rx, &xfer, resp_paddr);
2150 ret = ath10k_ce_send(ce_tx, &xfer, req_paddr, req_len, -1, 0);
2154 ret = ath10k_pci_bmi_wait(ar, ce_tx, ce_rx, &xfer);
2156 dma_addr_t unused_buffer;
2157 unsigned int unused_nbytes;
2158 unsigned int unused_id;
2160 ath10k_ce_cancel_send_next(ce_tx, NULL, &unused_buffer,
2161 &unused_nbytes, &unused_id);
2163 /* non-zero means we did not time out */
2169 dma_addr_t unused_buffer;
2171 ath10k_ce_revoke_recv_next(ce_rx, NULL, &unused_buffer);
2172 dma_unmap_single(ar->dev, resp_paddr,
2173 *resp_len, DMA_FROM_DEVICE);
2176 dma_unmap_single(ar->dev, req_paddr, req_len, DMA_TO_DEVICE);
2178 if (ret == 0 && resp_len) {
2179 *resp_len = min(*resp_len, xfer.resp_len);
2180 memcpy(resp, tresp, xfer.resp_len);
2189 static void ath10k_pci_bmi_send_done(struct ath10k_ce_pipe *ce_state)
2191 struct bmi_xfer *xfer;
2193 if (ath10k_ce_completed_send_next(ce_state, (void **)&xfer))
2196 xfer->tx_done = true;
2199 static void ath10k_pci_bmi_recv_data(struct ath10k_ce_pipe *ce_state)
2201 struct ath10k *ar = ce_state->ar;
2202 struct bmi_xfer *xfer;
2203 unsigned int nbytes;
2205 if (ath10k_ce_completed_recv_next(ce_state, (void **)&xfer,
2209 if (WARN_ON_ONCE(!xfer))
2212 if (!xfer->wait_for_resp) {
2213 ath10k_warn(ar, "unexpected: BMI data received; ignoring\n");
2217 xfer->resp_len = nbytes;
2218 xfer->rx_done = true;
2221 static int ath10k_pci_bmi_wait(struct ath10k *ar,
2222 struct ath10k_ce_pipe *tx_pipe,
2223 struct ath10k_ce_pipe *rx_pipe,
2224 struct bmi_xfer *xfer)
2226 unsigned long timeout = jiffies + BMI_COMMUNICATION_TIMEOUT_HZ;
2227 unsigned long started = jiffies;
2231 while (time_before_eq(jiffies, timeout)) {
2232 ath10k_pci_bmi_send_done(tx_pipe);
2233 ath10k_pci_bmi_recv_data(rx_pipe);
2235 if (xfer->tx_done && (xfer->rx_done == xfer->wait_for_resp)) {
2246 dur = jiffies - started;
2248 ath10k_dbg(ar, ATH10K_DBG_BMI,
2249 "bmi cmd took %lu jiffies hz %d ret %d\n",
2255 * Send an interrupt to the device to wake up the Target CPU
2256 * so it has an opportunity to notice any changed state.
2258 static int ath10k_pci_wake_target_cpu(struct ath10k *ar)
2262 addr = SOC_CORE_BASE_ADDRESS + CORE_CTRL_ADDRESS;
2263 val = ath10k_pci_read32(ar, addr);
2264 val |= CORE_CTRL_CPU_INTR_MASK;
2265 ath10k_pci_write32(ar, addr, val);
2270 static int ath10k_pci_get_num_banks(struct ath10k *ar)
2272 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2274 switch (ar_pci->pdev->device) {
2275 case QCA988X_2_0_DEVICE_ID_UBNT:
2276 case QCA988X_2_0_DEVICE_ID:
2277 case QCA99X0_2_0_DEVICE_ID:
2278 case QCA9888_2_0_DEVICE_ID:
2279 case QCA9984_1_0_DEVICE_ID:
2280 case QCA9887_1_0_DEVICE_ID:
2282 case QCA6164_2_1_DEVICE_ID:
2283 case QCA6174_2_1_DEVICE_ID:
2284 switch (MS(ar->chip_id, SOC_CHIP_ID_REV)) {
2285 case QCA6174_HW_1_0_CHIP_ID_REV:
2286 case QCA6174_HW_1_1_CHIP_ID_REV:
2287 case QCA6174_HW_2_1_CHIP_ID_REV:
2288 case QCA6174_HW_2_2_CHIP_ID_REV:
2290 case QCA6174_HW_1_3_CHIP_ID_REV:
2292 case QCA6174_HW_3_0_CHIP_ID_REV:
2293 case QCA6174_HW_3_1_CHIP_ID_REV:
2294 case QCA6174_HW_3_2_CHIP_ID_REV:
2298 case QCA9377_1_0_DEVICE_ID:
2302 ath10k_warn(ar, "unknown number of banks, assuming 1\n");
2306 static int ath10k_bus_get_num_banks(struct ath10k *ar)
2308 struct ath10k_ce *ce = ath10k_ce_priv(ar);
2310 return ce->bus_ops->get_num_banks(ar);
2313 int ath10k_pci_init_config(struct ath10k *ar)
2315 u32 interconnect_targ_addr;
2316 u32 pcie_state_targ_addr = 0;
2317 u32 pipe_cfg_targ_addr = 0;
2318 u32 svc_to_pipe_map = 0;
2319 u32 pcie_config_flags = 0;
2321 u32 ealloc_targ_addr;
2323 u32 flag2_targ_addr;
2326 /* Download to Target the CE Config and the service-to-CE map */
2327 interconnect_targ_addr =
2328 host_interest_item_address(HI_ITEM(hi_interconnect_state));
2330 /* Supply Target-side CE configuration */
2331 ret = ath10k_pci_diag_read32(ar, interconnect_targ_addr,
2332 &pcie_state_targ_addr);
2334 ath10k_err(ar, "Failed to get pcie state addr: %d\n", ret);
2338 if (pcie_state_targ_addr == 0) {
2340 ath10k_err(ar, "Invalid pcie state addr\n");
2344 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
2345 offsetof(struct pcie_state,
2347 &pipe_cfg_targ_addr);
2349 ath10k_err(ar, "Failed to get pipe cfg addr: %d\n", ret);
2353 if (pipe_cfg_targ_addr == 0) {
2355 ath10k_err(ar, "Invalid pipe cfg addr\n");
2359 ret = ath10k_pci_diag_write_mem(ar, pipe_cfg_targ_addr,
2360 target_ce_config_wlan,
2361 sizeof(struct ce_pipe_config) *
2362 NUM_TARGET_CE_CONFIG_WLAN);
2365 ath10k_err(ar, "Failed to write pipe cfg: %d\n", ret);
2369 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
2370 offsetof(struct pcie_state,
2374 ath10k_err(ar, "Failed to get svc/pipe map: %d\n", ret);
2378 if (svc_to_pipe_map == 0) {
2380 ath10k_err(ar, "Invalid svc_to_pipe map\n");
2384 ret = ath10k_pci_diag_write_mem(ar, svc_to_pipe_map,
2385 target_service_to_ce_map_wlan,
2386 sizeof(target_service_to_ce_map_wlan));
2388 ath10k_err(ar, "Failed to write svc/pipe map: %d\n", ret);
2392 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
2393 offsetof(struct pcie_state,
2395 &pcie_config_flags);
2397 ath10k_err(ar, "Failed to get pcie config_flags: %d\n", ret);
2401 pcie_config_flags &= ~PCIE_CONFIG_FLAG_ENABLE_L1;
2403 ret = ath10k_pci_diag_write32(ar, (pcie_state_targ_addr +
2404 offsetof(struct pcie_state,
2408 ath10k_err(ar, "Failed to write pcie config_flags: %d\n", ret);
2412 /* configure early allocation */
2413 ealloc_targ_addr = host_interest_item_address(HI_ITEM(hi_early_alloc));
2415 ret = ath10k_pci_diag_read32(ar, ealloc_targ_addr, &ealloc_value);
2417 ath10k_err(ar, "Failed to get early alloc val: %d\n", ret);
2421 /* first bank is switched to IRAM */
2422 ealloc_value |= ((HI_EARLY_ALLOC_MAGIC << HI_EARLY_ALLOC_MAGIC_SHIFT) &
2423 HI_EARLY_ALLOC_MAGIC_MASK);
2424 ealloc_value |= ((ath10k_bus_get_num_banks(ar) <<
2425 HI_EARLY_ALLOC_IRAM_BANKS_SHIFT) &
2426 HI_EARLY_ALLOC_IRAM_BANKS_MASK);
2428 ret = ath10k_pci_diag_write32(ar, ealloc_targ_addr, ealloc_value);
2430 ath10k_err(ar, "Failed to set early alloc val: %d\n", ret);
2434 /* Tell Target to proceed with initialization */
2435 flag2_targ_addr = host_interest_item_address(HI_ITEM(hi_option_flag2));
2437 ret = ath10k_pci_diag_read32(ar, flag2_targ_addr, &flag2_value);
2439 ath10k_err(ar, "Failed to get option val: %d\n", ret);
2443 flag2_value |= HI_OPTION_EARLY_CFG_DONE;
2445 ret = ath10k_pci_diag_write32(ar, flag2_targ_addr, flag2_value);
2447 ath10k_err(ar, "Failed to set option val: %d\n", ret);
2454 static void ath10k_pci_override_ce_config(struct ath10k *ar)
2456 struct ce_attr *attr;
2457 struct ce_pipe_config *config;
2459 /* For QCA6174 we're overriding the Copy Engine 5 configuration,
2460 * since it is currently used for other feature.
2463 /* Override Host's Copy Engine 5 configuration */
2464 attr = &host_ce_config_wlan[5];
2465 attr->src_sz_max = 0;
2466 attr->dest_nentries = 0;
2468 /* Override Target firmware's Copy Engine configuration */
2469 config = &target_ce_config_wlan[5];
2470 config->pipedir = __cpu_to_le32(PIPEDIR_OUT);
2471 config->nbytes_max = __cpu_to_le32(2048);
2473 /* Map from service/endpoint to Copy Engine */
2474 target_service_to_ce_map_wlan[15].pipenum = __cpu_to_le32(1);
2477 int ath10k_pci_alloc_pipes(struct ath10k *ar)
2479 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2480 struct ath10k_pci_pipe *pipe;
2481 struct ath10k_ce *ce = ath10k_ce_priv(ar);
2484 for (i = 0; i < CE_COUNT; i++) {
2485 pipe = &ar_pci->pipe_info[i];
2486 pipe->ce_hdl = &ce->ce_states[i];
2488 pipe->hif_ce_state = ar;
2490 ret = ath10k_ce_alloc_pipe(ar, i, &host_ce_config_wlan[i]);
2492 ath10k_err(ar, "failed to allocate copy engine pipe %d: %d\n",
2497 /* Last CE is Diagnostic Window */
2498 if (i == CE_DIAG_PIPE) {
2499 ar_pci->ce_diag = pipe->ce_hdl;
2503 pipe->buf_sz = (size_t)(host_ce_config_wlan[i].src_sz_max);
2509 void ath10k_pci_free_pipes(struct ath10k *ar)
2513 for (i = 0; i < CE_COUNT; i++)
2514 ath10k_ce_free_pipe(ar, i);
2517 int ath10k_pci_init_pipes(struct ath10k *ar)
2521 for (i = 0; i < CE_COUNT; i++) {
2522 ret = ath10k_ce_init_pipe(ar, i, &host_ce_config_wlan[i]);
2524 ath10k_err(ar, "failed to initialize copy engine pipe %d: %d\n",
2533 static bool ath10k_pci_has_fw_crashed(struct ath10k *ar)
2535 return ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS) &
2536 FW_IND_EVENT_PENDING;
2539 static void ath10k_pci_fw_crashed_clear(struct ath10k *ar)
2543 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS);
2544 val &= ~FW_IND_EVENT_PENDING;
2545 ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, val);
2548 static bool ath10k_pci_has_device_gone(struct ath10k *ar)
2552 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS);
2553 return (val == 0xffffffff);
2556 /* this function effectively clears target memory controller assert line */
2557 static void ath10k_pci_warm_reset_si0(struct ath10k *ar)
2561 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2562 ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS,
2563 val | SOC_RESET_CONTROL_SI0_RST_MASK);
2564 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2568 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2569 ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS,
2570 val & ~SOC_RESET_CONTROL_SI0_RST_MASK);
2571 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2576 static void ath10k_pci_warm_reset_cpu(struct ath10k *ar)
2580 ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, 0);
2582 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
2583 SOC_RESET_CONTROL_ADDRESS);
2584 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
2585 val | SOC_RESET_CONTROL_CPU_WARM_RST_MASK);
2588 static void ath10k_pci_warm_reset_ce(struct ath10k *ar)
2592 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
2593 SOC_RESET_CONTROL_ADDRESS);
2595 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
2596 val | SOC_RESET_CONTROL_CE_RST_MASK);
2598 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
2599 val & ~SOC_RESET_CONTROL_CE_RST_MASK);
2602 static void ath10k_pci_warm_reset_clear_lf(struct ath10k *ar)
2606 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
2607 SOC_LF_TIMER_CONTROL0_ADDRESS);
2608 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS +
2609 SOC_LF_TIMER_CONTROL0_ADDRESS,
2610 val & ~SOC_LF_TIMER_CONTROL0_ENABLE_MASK);
2613 static int ath10k_pci_warm_reset(struct ath10k *ar)
2617 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot warm reset\n");
2619 spin_lock_bh(&ar->data_lock);
2620 ar->stats.fw_warm_reset_counter++;
2621 spin_unlock_bh(&ar->data_lock);
2623 ath10k_pci_irq_disable(ar);
2625 /* Make sure the target CPU is not doing anything dangerous, e.g. if it
2626 * were to access copy engine while host performs copy engine reset
2627 * then it is possible for the device to confuse pci-e controller to
2628 * the point of bringing host system to a complete stop (i.e. hang).
2630 ath10k_pci_warm_reset_si0(ar);
2631 ath10k_pci_warm_reset_cpu(ar);
2632 ath10k_pci_init_pipes(ar);
2633 ath10k_pci_wait_for_target_init(ar);
2635 ath10k_pci_warm_reset_clear_lf(ar);
2636 ath10k_pci_warm_reset_ce(ar);
2637 ath10k_pci_warm_reset_cpu(ar);
2638 ath10k_pci_init_pipes(ar);
2640 ret = ath10k_pci_wait_for_target_init(ar);
2642 ath10k_warn(ar, "failed to wait for target init: %d\n", ret);
2646 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot warm reset complete\n");
2651 static int ath10k_pci_qca99x0_soft_chip_reset(struct ath10k *ar)
2653 ath10k_pci_irq_disable(ar);
2654 return ath10k_pci_qca99x0_chip_reset(ar);
2657 static int ath10k_pci_safe_chip_reset(struct ath10k *ar)
2659 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2661 if (!ar_pci->pci_soft_reset)
2664 return ar_pci->pci_soft_reset(ar);
2667 static int ath10k_pci_qca988x_chip_reset(struct ath10k *ar)
2672 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot 988x chip reset\n");
2674 /* Some hardware revisions (e.g. CUS223v2) has issues with cold reset.
2675 * It is thus preferred to use warm reset which is safer but may not be
2676 * able to recover the device from all possible fail scenarios.
2678 * Warm reset doesn't always work on first try so attempt it a few
2679 * times before giving up.
2681 for (i = 0; i < ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS; i++) {
2682 ret = ath10k_pci_warm_reset(ar);
2684 ath10k_warn(ar, "failed to warm reset attempt %d of %d: %d\n",
2685 i + 1, ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS,
2690 /* FIXME: Sometimes copy engine doesn't recover after warm
2691 * reset. In most cases this needs cold reset. In some of these
2692 * cases the device is in such a state that a cold reset may
2695 * Reading any host interest register via copy engine is
2696 * sufficient to verify if device is capable of booting
2699 ret = ath10k_pci_init_pipes(ar);
2701 ath10k_warn(ar, "failed to init copy engine: %d\n",
2706 ret = ath10k_pci_diag_read32(ar, QCA988X_HOST_INTEREST_ADDRESS,
2709 ath10k_warn(ar, "failed to poke copy engine: %d\n",
2714 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot chip reset complete (warm)\n");
2718 if (ath10k_pci_reset_mode == ATH10K_PCI_RESET_WARM_ONLY) {
2719 ath10k_warn(ar, "refusing cold reset as requested\n");
2723 ret = ath10k_pci_cold_reset(ar);
2725 ath10k_warn(ar, "failed to cold reset: %d\n", ret);
2729 ret = ath10k_pci_wait_for_target_init(ar);
2731 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n",
2736 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca988x chip reset complete (cold)\n");
2741 static int ath10k_pci_qca6174_chip_reset(struct ath10k *ar)
2745 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca6174 chip reset\n");
2747 /* FIXME: QCA6174 requires cold + warm reset to work. */
2749 ret = ath10k_pci_cold_reset(ar);
2751 ath10k_warn(ar, "failed to cold reset: %d\n", ret);
2755 ret = ath10k_pci_wait_for_target_init(ar);
2757 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n",
2762 ret = ath10k_pci_warm_reset(ar);
2764 ath10k_warn(ar, "failed to warm reset: %d\n", ret);
2768 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca6174 chip reset complete (cold)\n");
2773 static int ath10k_pci_qca99x0_chip_reset(struct ath10k *ar)
2777 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca99x0 chip reset\n");
2779 ret = ath10k_pci_cold_reset(ar);
2781 ath10k_warn(ar, "failed to cold reset: %d\n", ret);
2785 ret = ath10k_pci_wait_for_target_init(ar);
2787 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n",
2792 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca99x0 chip reset complete (cold)\n");
2797 static int ath10k_pci_chip_reset(struct ath10k *ar)
2799 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2801 if (WARN_ON(!ar_pci->pci_hard_reset))
2804 return ar_pci->pci_hard_reset(ar);
2807 static int ath10k_pci_hif_power_up(struct ath10k *ar)
2809 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2812 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif power up\n");
2814 pcie_capability_read_word(ar_pci->pdev, PCI_EXP_LNKCTL,
2816 pcie_capability_write_word(ar_pci->pdev, PCI_EXP_LNKCTL,
2817 ar_pci->link_ctl & ~PCI_EXP_LNKCTL_ASPMC);
2820 * Bring the target up cleanly.
2822 * The target may be in an undefined state with an AUX-powered Target
2823 * and a Host in WoW mode. If the Host crashes, loses power, or is
2824 * restarted (without unloading the driver) then the Target is left
2825 * (aux) powered and running. On a subsequent driver load, the Target
2826 * is in an unexpected state. We try to catch that here in order to
2827 * reset the Target and retry the probe.
2829 ret = ath10k_pci_chip_reset(ar);
2831 if (ath10k_pci_has_fw_crashed(ar)) {
2832 ath10k_warn(ar, "firmware crashed during chip reset\n");
2833 ath10k_pci_fw_crashed_clear(ar);
2834 ath10k_pci_fw_crashed_dump(ar);
2837 ath10k_err(ar, "failed to reset chip: %d\n", ret);
2841 ret = ath10k_pci_init_pipes(ar);
2843 ath10k_err(ar, "failed to initialize CE: %d\n", ret);
2847 ret = ath10k_pci_init_config(ar);
2849 ath10k_err(ar, "failed to setup init config: %d\n", ret);
2853 ret = ath10k_pci_wake_target_cpu(ar);
2855 ath10k_err(ar, "could not wake up target CPU: %d\n", ret);
2862 ath10k_pci_ce_deinit(ar);
2868 void ath10k_pci_hif_power_down(struct ath10k *ar)
2870 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif power down\n");
2872 /* Currently hif_power_up performs effectively a reset and hif_stop
2873 * resets the chip as well so there's no point in resetting here.
2877 static int ath10k_pci_hif_suspend(struct ath10k *ar)
2879 /* Nothing to do; the important stuff is in the driver suspend. */
2883 static int ath10k_pci_suspend(struct ath10k *ar)
2885 /* The grace timer can still be counting down and ar->ps_awake be true.
2886 * It is known that the device may be asleep after resuming regardless
2887 * of the SoC powersave state before suspending. Hence make sure the
2888 * device is asleep before proceeding.
2890 ath10k_pci_sleep_sync(ar);
2895 static int ath10k_pci_hif_resume(struct ath10k *ar)
2897 /* Nothing to do; the important stuff is in the driver resume. */
2901 static int ath10k_pci_resume(struct ath10k *ar)
2903 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2904 struct pci_dev *pdev = ar_pci->pdev;
2908 ret = ath10k_pci_force_wake(ar);
2910 ath10k_err(ar, "failed to wake up target: %d\n", ret);
2914 /* Suspend/Resume resets the PCI configuration space, so we have to
2915 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
2916 * from interfering with C3 CPU state. pci_restore_state won't help
2917 * here since it only restores the first 64 bytes pci config header.
2919 pci_read_config_dword(pdev, 0x40, &val);
2920 if ((val & 0x0000ff00) != 0)
2921 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
2926 static bool ath10k_pci_validate_cal(void *data, size_t size)
2928 __le16 *cal_words = data;
2935 for (i = 0; i < size / 2; i++)
2936 checksum ^= le16_to_cpu(cal_words[i]);
2938 return checksum == 0xffff;
2941 static void ath10k_pci_enable_eeprom(struct ath10k *ar)
2943 /* Enable SI clock */
2944 ath10k_pci_soc_write32(ar, CLOCK_CONTROL_OFFSET, 0x0);
2946 /* Configure GPIOs for I2C operation */
2947 ath10k_pci_write32(ar,
2948 GPIO_BASE_ADDRESS + GPIO_PIN0_OFFSET +
2949 4 * QCA9887_1_0_I2C_SDA_GPIO_PIN,
2950 SM(QCA9887_1_0_I2C_SDA_PIN_CONFIG,
2952 SM(1, GPIO_PIN0_PAD_PULL));
2954 ath10k_pci_write32(ar,
2955 GPIO_BASE_ADDRESS + GPIO_PIN0_OFFSET +
2956 4 * QCA9887_1_0_SI_CLK_GPIO_PIN,
2957 SM(QCA9887_1_0_SI_CLK_PIN_CONFIG, GPIO_PIN0_CONFIG) |
2958 SM(1, GPIO_PIN0_PAD_PULL));
2960 ath10k_pci_write32(ar,
2962 QCA9887_1_0_GPIO_ENABLE_W1TS_LOW_ADDRESS,
2963 1u << QCA9887_1_0_SI_CLK_GPIO_PIN);
2965 /* In Swift ASIC - EEPROM clock will be (110MHz/512) = 214KHz */
2966 ath10k_pci_write32(ar,
2967 SI_BASE_ADDRESS + SI_CONFIG_OFFSET,
2968 SM(1, SI_CONFIG_ERR_INT) |
2969 SM(1, SI_CONFIG_BIDIR_OD_DATA) |
2970 SM(1, SI_CONFIG_I2C) |
2971 SM(1, SI_CONFIG_POS_SAMPLE) |
2972 SM(1, SI_CONFIG_INACTIVE_DATA) |
2973 SM(1, SI_CONFIG_INACTIVE_CLK) |
2974 SM(8, SI_CONFIG_DIVIDER));
2977 static int ath10k_pci_read_eeprom(struct ath10k *ar, u16 addr, u8 *out)
2982 /* set device select byte and for the read operation */
2983 reg = QCA9887_EEPROM_SELECT_READ |
2984 SM(addr, QCA9887_EEPROM_ADDR_LO) |
2985 SM(addr >> 8, QCA9887_EEPROM_ADDR_HI);
2986 ath10k_pci_write32(ar, SI_BASE_ADDRESS + SI_TX_DATA0_OFFSET, reg);
2988 /* write transmit data, transfer length, and START bit */
2989 ath10k_pci_write32(ar, SI_BASE_ADDRESS + SI_CS_OFFSET,
2990 SM(1, SI_CS_START) | SM(1, SI_CS_RX_CNT) |
2991 SM(4, SI_CS_TX_CNT));
2993 /* wait max 1 sec */
2994 wait_limit = 100000;
2996 /* wait for SI_CS_DONE_INT */
2998 reg = ath10k_pci_read32(ar, SI_BASE_ADDRESS + SI_CS_OFFSET);
2999 if (MS(reg, SI_CS_DONE_INT))
3004 } while (wait_limit > 0);
3006 if (!MS(reg, SI_CS_DONE_INT)) {
3007 ath10k_err(ar, "timeout while reading device EEPROM at %04x\n",
3012 /* clear SI_CS_DONE_INT */
3013 ath10k_pci_write32(ar, SI_BASE_ADDRESS + SI_CS_OFFSET, reg);
3015 if (MS(reg, SI_CS_DONE_ERR)) {
3016 ath10k_err(ar, "failed to read device EEPROM at %04x\n", addr);
3020 /* extract receive data */
3021 reg = ath10k_pci_read32(ar, SI_BASE_ADDRESS + SI_RX_DATA0_OFFSET);
3027 static int ath10k_pci_hif_fetch_cal_eeprom(struct ath10k *ar, void **data,
3034 if (!QCA_REV_9887(ar))
3037 calsize = ar->hw_params.cal_data_len;
3038 caldata = kmalloc(calsize, GFP_KERNEL);
3042 ath10k_pci_enable_eeprom(ar);
3044 for (i = 0; i < calsize; i++) {
3045 ret = ath10k_pci_read_eeprom(ar, i, &caldata[i]);
3050 if (!ath10k_pci_validate_cal(caldata, calsize))
3054 *data_len = calsize;
3064 static const struct ath10k_hif_ops ath10k_pci_hif_ops = {
3065 .tx_sg = ath10k_pci_hif_tx_sg,
3066 .diag_read = ath10k_pci_hif_diag_read,
3067 .diag_write = ath10k_pci_diag_write_mem,
3068 .exchange_bmi_msg = ath10k_pci_hif_exchange_bmi_msg,
3069 .start = ath10k_pci_hif_start,
3070 .stop = ath10k_pci_hif_stop,
3071 .map_service_to_pipe = ath10k_pci_hif_map_service_to_pipe,
3072 .get_default_pipe = ath10k_pci_hif_get_default_pipe,
3073 .send_complete_check = ath10k_pci_hif_send_complete_check,
3074 .get_free_queue_number = ath10k_pci_hif_get_free_queue_number,
3075 .power_up = ath10k_pci_hif_power_up,
3076 .power_down = ath10k_pci_hif_power_down,
3077 .read32 = ath10k_pci_read32,
3078 .write32 = ath10k_pci_write32,
3079 .suspend = ath10k_pci_hif_suspend,
3080 .resume = ath10k_pci_hif_resume,
3081 .fetch_cal_eeprom = ath10k_pci_hif_fetch_cal_eeprom,
3085 * Top-level interrupt handler for all PCI interrupts from a Target.
3086 * When a block of MSI interrupts is allocated, this top-level handler
3087 * is not used; instead, we directly call the correct sub-handler.
3089 static irqreturn_t ath10k_pci_interrupt_handler(int irq, void *arg)
3091 struct ath10k *ar = arg;
3092 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3095 if (ath10k_pci_has_device_gone(ar))
3098 ret = ath10k_pci_force_wake(ar);
3100 ath10k_warn(ar, "failed to wake device up on irq: %d\n", ret);
3104 if ((ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_LEGACY) &&
3105 !ath10k_pci_irq_pending(ar))
3108 ath10k_pci_disable_and_clear_legacy_irq(ar);
3109 ath10k_pci_irq_msi_fw_mask(ar);
3110 napi_schedule(&ar->napi);
3115 static int ath10k_pci_napi_poll(struct napi_struct *ctx, int budget)
3117 struct ath10k *ar = container_of(ctx, struct ath10k, napi);
3120 if (ath10k_pci_has_fw_crashed(ar)) {
3121 ath10k_pci_fw_crashed_clear(ar);
3122 ath10k_pci_fw_crashed_dump(ar);
3127 ath10k_ce_per_engine_service_any(ar);
3129 done = ath10k_htt_txrx_compl_task(ar, budget);
3131 if (done < budget) {
3132 napi_complete_done(ctx, done);
3133 /* In case of MSI, it is possible that interrupts are received
3134 * while NAPI poll is inprogress. So pending interrupts that are
3135 * received after processing all copy engine pipes by NAPI poll
3136 * will not be handled again. This is causing failure to
3137 * complete boot sequence in x86 platform. So before enabling
3138 * interrupts safer to check for pending interrupts for
3139 * immediate servicing.
3141 if (ath10k_ce_interrupt_summary(ar)) {
3142 napi_reschedule(ctx);
3145 ath10k_pci_enable_legacy_irq(ar);
3146 ath10k_pci_irq_msi_fw_unmask(ar);
3153 static int ath10k_pci_request_irq_msi(struct ath10k *ar)
3155 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3158 ret = request_irq(ar_pci->pdev->irq,
3159 ath10k_pci_interrupt_handler,
3160 IRQF_SHARED, "ath10k_pci", ar);
3162 ath10k_warn(ar, "failed to request MSI irq %d: %d\n",
3163 ar_pci->pdev->irq, ret);
3170 static int ath10k_pci_request_irq_legacy(struct ath10k *ar)
3172 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3175 ret = request_irq(ar_pci->pdev->irq,
3176 ath10k_pci_interrupt_handler,
3177 IRQF_SHARED, "ath10k_pci", ar);
3179 ath10k_warn(ar, "failed to request legacy irq %d: %d\n",
3180 ar_pci->pdev->irq, ret);
3187 static int ath10k_pci_request_irq(struct ath10k *ar)
3189 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3191 switch (ar_pci->oper_irq_mode) {
3192 case ATH10K_PCI_IRQ_LEGACY:
3193 return ath10k_pci_request_irq_legacy(ar);
3194 case ATH10K_PCI_IRQ_MSI:
3195 return ath10k_pci_request_irq_msi(ar);
3201 static void ath10k_pci_free_irq(struct ath10k *ar)
3203 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3205 free_irq(ar_pci->pdev->irq, ar);
3208 void ath10k_pci_init_napi(struct ath10k *ar)
3210 netif_napi_add(&ar->napi_dev, &ar->napi, ath10k_pci_napi_poll,
3211 ATH10K_NAPI_BUDGET);
3214 static int ath10k_pci_init_irq(struct ath10k *ar)
3216 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3219 ath10k_pci_init_napi(ar);
3221 if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_AUTO)
3222 ath10k_info(ar, "limiting irq mode to: %d\n",
3223 ath10k_pci_irq_mode);
3226 if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_LEGACY) {
3227 ar_pci->oper_irq_mode = ATH10K_PCI_IRQ_MSI;
3228 ret = pci_enable_msi(ar_pci->pdev);
3237 * A potential race occurs here: The CORE_BASE write
3238 * depends on target correctly decoding AXI address but
3239 * host won't know when target writes BAR to CORE_CTRL.
3240 * This write might get lost if target has NOT written BAR.
3241 * For now, fix the race by repeating the write in below
3242 * synchronization checking.
3244 ar_pci->oper_irq_mode = ATH10K_PCI_IRQ_LEGACY;
3246 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
3247 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
3252 static void ath10k_pci_deinit_irq_legacy(struct ath10k *ar)
3254 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
3258 static int ath10k_pci_deinit_irq(struct ath10k *ar)
3260 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3262 switch (ar_pci->oper_irq_mode) {
3263 case ATH10K_PCI_IRQ_LEGACY:
3264 ath10k_pci_deinit_irq_legacy(ar);
3267 pci_disable_msi(ar_pci->pdev);
3274 int ath10k_pci_wait_for_target_init(struct ath10k *ar)
3276 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3277 unsigned long timeout;
3280 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot waiting target to initialise\n");
3282 timeout = jiffies + msecs_to_jiffies(ATH10K_PCI_TARGET_WAIT);
3285 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS);
3287 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot target indicator %x\n",
3290 /* target should never return this */
3291 if (val == 0xffffffff)
3294 /* the device has crashed so don't bother trying anymore */
3295 if (val & FW_IND_EVENT_PENDING)
3298 if (val & FW_IND_INITIALIZED)
3301 if (ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_LEGACY)
3302 /* Fix potential race by repeating CORE_BASE writes */
3303 ath10k_pci_enable_legacy_irq(ar);
3306 } while (time_before(jiffies, timeout));
3308 ath10k_pci_disable_and_clear_legacy_irq(ar);
3309 ath10k_pci_irq_msi_fw_mask(ar);
3311 if (val == 0xffffffff) {
3312 ath10k_err(ar, "failed to read device register, device is gone\n");
3316 if (val & FW_IND_EVENT_PENDING) {
3317 ath10k_warn(ar, "device has crashed during init\n");
3321 if (!(val & FW_IND_INITIALIZED)) {
3322 ath10k_err(ar, "failed to receive initialized event from target: %08x\n",
3327 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot target initialised\n");
3331 static int ath10k_pci_cold_reset(struct ath10k *ar)
3335 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cold reset\n");
3337 spin_lock_bh(&ar->data_lock);
3339 ar->stats.fw_cold_reset_counter++;
3341 spin_unlock_bh(&ar->data_lock);
3343 /* Put Target, including PCIe, into RESET. */
3344 val = ath10k_pci_reg_read32(ar, SOC_GLOBAL_RESET_ADDRESS);
3346 ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val);
3348 /* After writing into SOC_GLOBAL_RESET to put device into
3349 * reset and pulling out of reset pcie may not be stable
3350 * for any immediate pcie register access and cause bus error,
3351 * add delay before any pcie access request to fix this issue.
3355 /* Pull Target, including PCIe, out of RESET. */
3357 ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val);
3361 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cold reset complete\n");
3366 static int ath10k_pci_claim(struct ath10k *ar)
3368 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3369 struct pci_dev *pdev = ar_pci->pdev;
3372 pci_set_drvdata(pdev, ar);
3374 ret = pci_enable_device(pdev);
3376 ath10k_err(ar, "failed to enable pci device: %d\n", ret);
3380 ret = pci_request_region(pdev, BAR_NUM, "ath");
3382 ath10k_err(ar, "failed to request region BAR%d: %d\n", BAR_NUM,
3387 /* Target expects 32 bit DMA. Enforce it. */
3388 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3390 ath10k_err(ar, "failed to set dma mask to 32-bit: %d\n", ret);
3394 ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3396 ath10k_err(ar, "failed to set consistent dma mask to 32-bit: %d\n",
3401 pci_set_master(pdev);
3403 /* Arrange for access to Target SoC registers. */
3404 ar_pci->mem_len = pci_resource_len(pdev, BAR_NUM);
3405 ar_pci->mem = pci_iomap(pdev, BAR_NUM, 0);
3407 ath10k_err(ar, "failed to iomap BAR%d\n", BAR_NUM);
3412 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot pci_mem 0x%pK\n", ar_pci->mem);
3416 pci_clear_master(pdev);
3419 pci_release_region(pdev, BAR_NUM);
3422 pci_disable_device(pdev);
3427 static void ath10k_pci_release(struct ath10k *ar)
3429 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3430 struct pci_dev *pdev = ar_pci->pdev;
3432 pci_iounmap(pdev, ar_pci->mem);
3433 pci_release_region(pdev, BAR_NUM);
3434 pci_clear_master(pdev);
3435 pci_disable_device(pdev);
3438 static bool ath10k_pci_chip_is_supported(u32 dev_id, u32 chip_id)
3440 const struct ath10k_pci_supp_chip *supp_chip;
3442 u32 rev_id = MS(chip_id, SOC_CHIP_ID_REV);
3444 for (i = 0; i < ARRAY_SIZE(ath10k_pci_supp_chips); i++) {
3445 supp_chip = &ath10k_pci_supp_chips[i];
3447 if (supp_chip->dev_id == dev_id &&
3448 supp_chip->rev_id == rev_id)
3455 int ath10k_pci_setup_resource(struct ath10k *ar)
3457 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3458 struct ath10k_ce *ce = ath10k_ce_priv(ar);
3461 spin_lock_init(&ce->ce_lock);
3462 spin_lock_init(&ar_pci->ps_lock);
3464 timer_setup(&ar_pci->rx_post_retry, ath10k_pci_rx_replenish_retry, 0);
3466 if (QCA_REV_6174(ar) || QCA_REV_9377(ar))
3467 ath10k_pci_override_ce_config(ar);
3469 ret = ath10k_pci_alloc_pipes(ar);
3471 ath10k_err(ar, "failed to allocate copy engine pipes: %d\n",
3479 void ath10k_pci_release_resource(struct ath10k *ar)
3481 ath10k_pci_rx_retry_sync(ar);
3482 netif_napi_del(&ar->napi);
3483 ath10k_pci_ce_deinit(ar);
3484 ath10k_pci_free_pipes(ar);
3487 static const struct ath10k_bus_ops ath10k_pci_bus_ops = {
3488 .read32 = ath10k_bus_pci_read32,
3489 .write32 = ath10k_bus_pci_write32,
3490 .get_num_banks = ath10k_pci_get_num_banks,
3493 static int ath10k_pci_probe(struct pci_dev *pdev,
3494 const struct pci_device_id *pci_dev)
3498 struct ath10k_pci *ar_pci;
3499 enum ath10k_hw_rev hw_rev;
3502 int (*pci_soft_reset)(struct ath10k *ar);
3503 int (*pci_hard_reset)(struct ath10k *ar);
3504 u32 (*targ_cpu_to_ce_addr)(struct ath10k *ar, u32 addr);
3506 switch (pci_dev->device) {
3507 case QCA988X_2_0_DEVICE_ID_UBNT:
3508 case QCA988X_2_0_DEVICE_ID:
3509 hw_rev = ATH10K_HW_QCA988X;
3511 pci_soft_reset = ath10k_pci_warm_reset;
3512 pci_hard_reset = ath10k_pci_qca988x_chip_reset;
3513 targ_cpu_to_ce_addr = ath10k_pci_qca988x_targ_cpu_to_ce_addr;
3515 case QCA9887_1_0_DEVICE_ID:
3516 hw_rev = ATH10K_HW_QCA9887;
3518 pci_soft_reset = ath10k_pci_warm_reset;
3519 pci_hard_reset = ath10k_pci_qca988x_chip_reset;
3520 targ_cpu_to_ce_addr = ath10k_pci_qca988x_targ_cpu_to_ce_addr;
3522 case QCA6164_2_1_DEVICE_ID:
3523 case QCA6174_2_1_DEVICE_ID:
3524 hw_rev = ATH10K_HW_QCA6174;
3526 pci_soft_reset = ath10k_pci_warm_reset;
3527 pci_hard_reset = ath10k_pci_qca6174_chip_reset;
3528 targ_cpu_to_ce_addr = ath10k_pci_qca988x_targ_cpu_to_ce_addr;
3530 case QCA99X0_2_0_DEVICE_ID:
3531 hw_rev = ATH10K_HW_QCA99X0;
3533 pci_soft_reset = ath10k_pci_qca99x0_soft_chip_reset;
3534 pci_hard_reset = ath10k_pci_qca99x0_chip_reset;
3535 targ_cpu_to_ce_addr = ath10k_pci_qca99x0_targ_cpu_to_ce_addr;
3537 case QCA9984_1_0_DEVICE_ID:
3538 hw_rev = ATH10K_HW_QCA9984;
3540 pci_soft_reset = ath10k_pci_qca99x0_soft_chip_reset;
3541 pci_hard_reset = ath10k_pci_qca99x0_chip_reset;
3542 targ_cpu_to_ce_addr = ath10k_pci_qca99x0_targ_cpu_to_ce_addr;
3544 case QCA9888_2_0_DEVICE_ID:
3545 hw_rev = ATH10K_HW_QCA9888;
3547 pci_soft_reset = ath10k_pci_qca99x0_soft_chip_reset;
3548 pci_hard_reset = ath10k_pci_qca99x0_chip_reset;
3549 targ_cpu_to_ce_addr = ath10k_pci_qca99x0_targ_cpu_to_ce_addr;
3551 case QCA9377_1_0_DEVICE_ID:
3552 hw_rev = ATH10K_HW_QCA9377;
3554 pci_soft_reset = NULL;
3555 pci_hard_reset = ath10k_pci_qca6174_chip_reset;
3556 targ_cpu_to_ce_addr = ath10k_pci_qca988x_targ_cpu_to_ce_addr;
3563 ar = ath10k_core_create(sizeof(*ar_pci), &pdev->dev, ATH10K_BUS_PCI,
3564 hw_rev, &ath10k_pci_hif_ops);
3566 dev_err(&pdev->dev, "failed to allocate core\n");
3570 ath10k_dbg(ar, ATH10K_DBG_BOOT, "pci probe %04x:%04x %04x:%04x\n",
3571 pdev->vendor, pdev->device,
3572 pdev->subsystem_vendor, pdev->subsystem_device);
3574 ar_pci = ath10k_pci_priv(ar);
3575 ar_pci->pdev = pdev;
3576 ar_pci->dev = &pdev->dev;
3578 ar->dev_id = pci_dev->device;
3579 ar_pci->pci_ps = pci_ps;
3580 ar_pci->ce.bus_ops = &ath10k_pci_bus_ops;
3581 ar_pci->pci_soft_reset = pci_soft_reset;
3582 ar_pci->pci_hard_reset = pci_hard_reset;
3583 ar_pci->targ_cpu_to_ce_addr = targ_cpu_to_ce_addr;
3584 ar->ce_priv = &ar_pci->ce;
3586 ar->id.vendor = pdev->vendor;
3587 ar->id.device = pdev->device;
3588 ar->id.subsystem_vendor = pdev->subsystem_vendor;
3589 ar->id.subsystem_device = pdev->subsystem_device;
3591 timer_setup(&ar_pci->ps_timer, ath10k_pci_ps_timer, 0);
3593 ret = ath10k_pci_setup_resource(ar);
3595 ath10k_err(ar, "failed to setup resource: %d\n", ret);
3596 goto err_core_destroy;
3599 ret = ath10k_pci_claim(ar);
3601 ath10k_err(ar, "failed to claim device: %d\n", ret);
3602 goto err_free_pipes;
3605 ret = ath10k_pci_force_wake(ar);
3607 ath10k_warn(ar, "failed to wake up device : %d\n", ret);
3611 ath10k_pci_ce_deinit(ar);
3612 ath10k_pci_irq_disable(ar);
3614 ret = ath10k_pci_init_irq(ar);
3616 ath10k_err(ar, "failed to init irqs: %d\n", ret);
3620 ath10k_info(ar, "pci irq %s oper_irq_mode %d irq_mode %d reset_mode %d\n",
3621 ath10k_pci_get_irq_method(ar), ar_pci->oper_irq_mode,
3622 ath10k_pci_irq_mode, ath10k_pci_reset_mode);
3624 ret = ath10k_pci_request_irq(ar);
3626 ath10k_warn(ar, "failed to request irqs: %d\n", ret);
3627 goto err_deinit_irq;
3630 ret = ath10k_pci_chip_reset(ar);
3632 ath10k_err(ar, "failed to reset chip: %d\n", ret);
3636 chip_id = ath10k_pci_soc_read32(ar, SOC_CHIP_ID_ADDRESS);
3637 if (chip_id == 0xffffffff) {
3638 ath10k_err(ar, "failed to get chip id\n");
3642 if (!ath10k_pci_chip_is_supported(pdev->device, chip_id)) {
3643 ath10k_err(ar, "device %04x with chip_id %08x isn't supported\n",
3644 pdev->device, chip_id);
3648 ret = ath10k_core_register(ar, chip_id);
3650 ath10k_err(ar, "failed to register driver core: %d\n", ret);
3657 ath10k_pci_free_irq(ar);
3658 ath10k_pci_rx_retry_sync(ar);
3661 ath10k_pci_deinit_irq(ar);
3664 ath10k_pci_sleep_sync(ar);
3665 ath10k_pci_release(ar);
3668 ath10k_pci_free_pipes(ar);
3671 ath10k_core_destroy(ar);
3676 static void ath10k_pci_remove(struct pci_dev *pdev)
3678 struct ath10k *ar = pci_get_drvdata(pdev);
3679 struct ath10k_pci *ar_pci;
3681 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci remove\n");
3686 ar_pci = ath10k_pci_priv(ar);
3691 ath10k_core_unregister(ar);
3692 ath10k_pci_free_irq(ar);
3693 ath10k_pci_deinit_irq(ar);
3694 ath10k_pci_release_resource(ar);
3695 ath10k_pci_sleep_sync(ar);
3696 ath10k_pci_release(ar);
3697 ath10k_core_destroy(ar);
3700 MODULE_DEVICE_TABLE(pci, ath10k_pci_id_table);
3702 static __maybe_unused int ath10k_pci_pm_suspend(struct device *dev)
3704 struct ath10k *ar = dev_get_drvdata(dev);
3707 ret = ath10k_pci_suspend(ar);
3709 ath10k_warn(ar, "failed to suspend hif: %d\n", ret);
3714 static __maybe_unused int ath10k_pci_pm_resume(struct device *dev)
3716 struct ath10k *ar = dev_get_drvdata(dev);
3719 ret = ath10k_pci_resume(ar);
3721 ath10k_warn(ar, "failed to resume hif: %d\n", ret);
3726 static SIMPLE_DEV_PM_OPS(ath10k_pci_pm_ops,
3727 ath10k_pci_pm_suspend,
3728 ath10k_pci_pm_resume);
3730 static struct pci_driver ath10k_pci_driver = {
3731 .name = "ath10k_pci",
3732 .id_table = ath10k_pci_id_table,
3733 .probe = ath10k_pci_probe,
3734 .remove = ath10k_pci_remove,
3736 .driver.pm = &ath10k_pci_pm_ops,
3740 static int __init ath10k_pci_init(void)
3744 ret = pci_register_driver(&ath10k_pci_driver);
3746 printk(KERN_ERR "failed to register ath10k pci driver: %d\n",
3749 ret = ath10k_ahb_init();
3751 printk(KERN_ERR "ahb init failed: %d\n", ret);
3755 module_init(ath10k_pci_init);
3757 static void __exit ath10k_pci_exit(void)
3759 pci_unregister_driver(&ath10k_pci_driver);
3763 module_exit(ath10k_pci_exit);
3765 MODULE_AUTHOR("Qualcomm Atheros");
3766 MODULE_DESCRIPTION("Driver support for Qualcomm Atheros 802.11ac WLAN PCIe/AHB devices");
3767 MODULE_LICENSE("Dual BSD/GPL");
3769 /* QCA988x 2.0 firmware files */
3772 /* QCA9887 1.0 firmware files */
3775 /* QCA6174 2.1 firmware files */
3778 /* QCA6174 3.1 firmware files */
3781 /* QCA9377 1.0 firmware files */