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_ce_pipe *tx_pipe,
105 struct ath10k_ce_pipe *rx_pipe,
106 struct bmi_xfer *xfer);
107 static int ath10k_pci_qca99x0_chip_reset(struct ath10k *ar);
108 static void ath10k_pci_htc_tx_cb(struct ath10k_ce_pipe *ce_state);
109 static void ath10k_pci_htc_rx_cb(struct ath10k_ce_pipe *ce_state);
110 static void ath10k_pci_htt_tx_cb(struct ath10k_ce_pipe *ce_state);
111 static void ath10k_pci_htt_rx_cb(struct ath10k_ce_pipe *ce_state);
112 static void ath10k_pci_htt_htc_rx_cb(struct ath10k_ce_pipe *ce_state);
113 static void ath10k_pci_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state);
115 static struct ce_attr host_ce_config_wlan[] = {
116 /* CE0: host->target HTC control and raw streams */
118 .flags = CE_ATTR_FLAGS,
122 .send_cb = ath10k_pci_htc_tx_cb,
125 /* CE1: target->host HTT + HTC control */
127 .flags = CE_ATTR_FLAGS,
130 .dest_nentries = 512,
131 .recv_cb = ath10k_pci_htt_htc_rx_cb,
134 /* CE2: target->host WMI */
136 .flags = CE_ATTR_FLAGS,
139 .dest_nentries = 128,
140 .recv_cb = ath10k_pci_htc_rx_cb,
143 /* CE3: host->target WMI */
145 .flags = CE_ATTR_FLAGS,
149 .send_cb = ath10k_pci_htc_tx_cb,
152 /* CE4: host->target HTT */
154 .flags = CE_ATTR_FLAGS | CE_ATTR_DIS_INTR,
155 .src_nentries = CE_HTT_H2T_MSG_SRC_NENTRIES,
158 .send_cb = ath10k_pci_htt_tx_cb,
161 /* CE5: target->host HTT (HIF->HTT) */
163 .flags = CE_ATTR_FLAGS,
166 .dest_nentries = 512,
167 .recv_cb = ath10k_pci_htt_rx_cb,
170 /* CE6: target autonomous hif_memcpy */
172 .flags = CE_ATTR_FLAGS,
178 /* CE7: ce_diag, the Diagnostic Window */
180 .flags = CE_ATTR_FLAGS,
182 .src_sz_max = DIAG_TRANSFER_LIMIT,
186 /* CE8: target->host pktlog */
188 .flags = CE_ATTR_FLAGS,
191 .dest_nentries = 128,
192 .recv_cb = ath10k_pci_pktlog_rx_cb,
195 /* CE9 target autonomous qcache memcpy */
197 .flags = CE_ATTR_FLAGS,
203 /* CE10: target autonomous hif memcpy */
205 .flags = CE_ATTR_FLAGS,
211 /* CE11: target autonomous hif memcpy */
213 .flags = CE_ATTR_FLAGS,
220 /* Target firmware's Copy Engine configuration. */
221 static struct ce_pipe_config target_ce_config_wlan[] = {
222 /* CE0: host->target HTC control and raw streams */
224 .pipenum = __cpu_to_le32(0),
225 .pipedir = __cpu_to_le32(PIPEDIR_OUT),
226 .nentries = __cpu_to_le32(32),
227 .nbytes_max = __cpu_to_le32(256),
228 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
229 .reserved = __cpu_to_le32(0),
232 /* CE1: target->host HTT + HTC control */
234 .pipenum = __cpu_to_le32(1),
235 .pipedir = __cpu_to_le32(PIPEDIR_IN),
236 .nentries = __cpu_to_le32(32),
237 .nbytes_max = __cpu_to_le32(2048),
238 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
239 .reserved = __cpu_to_le32(0),
242 /* CE2: target->host WMI */
244 .pipenum = __cpu_to_le32(2),
245 .pipedir = __cpu_to_le32(PIPEDIR_IN),
246 .nentries = __cpu_to_le32(64),
247 .nbytes_max = __cpu_to_le32(2048),
248 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
249 .reserved = __cpu_to_le32(0),
252 /* CE3: host->target WMI */
254 .pipenum = __cpu_to_le32(3),
255 .pipedir = __cpu_to_le32(PIPEDIR_OUT),
256 .nentries = __cpu_to_le32(32),
257 .nbytes_max = __cpu_to_le32(2048),
258 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
259 .reserved = __cpu_to_le32(0),
262 /* CE4: host->target HTT */
264 .pipenum = __cpu_to_le32(4),
265 .pipedir = __cpu_to_le32(PIPEDIR_OUT),
266 .nentries = __cpu_to_le32(256),
267 .nbytes_max = __cpu_to_le32(256),
268 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
269 .reserved = __cpu_to_le32(0),
272 /* NB: 50% of src nentries, since tx has 2 frags */
274 /* CE5: target->host HTT (HIF->HTT) */
276 .pipenum = __cpu_to_le32(5),
277 .pipedir = __cpu_to_le32(PIPEDIR_IN),
278 .nentries = __cpu_to_le32(32),
279 .nbytes_max = __cpu_to_le32(512),
280 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
281 .reserved = __cpu_to_le32(0),
284 /* CE6: Reserved for target autonomous hif_memcpy */
286 .pipenum = __cpu_to_le32(6),
287 .pipedir = __cpu_to_le32(PIPEDIR_INOUT),
288 .nentries = __cpu_to_le32(32),
289 .nbytes_max = __cpu_to_le32(4096),
290 .flags = __cpu_to_le32(CE_ATTR_FLAGS),
291 .reserved = __cpu_to_le32(0),
294 /* CE7 used only by Host */
296 .pipenum = __cpu_to_le32(7),
297 .pipedir = __cpu_to_le32(PIPEDIR_INOUT),
298 .nentries = __cpu_to_le32(0),
299 .nbytes_max = __cpu_to_le32(0),
300 .flags = __cpu_to_le32(0),
301 .reserved = __cpu_to_le32(0),
304 /* CE8 target->host packtlog */
306 .pipenum = __cpu_to_le32(8),
307 .pipedir = __cpu_to_le32(PIPEDIR_IN),
308 .nentries = __cpu_to_le32(64),
309 .nbytes_max = __cpu_to_le32(2048),
310 .flags = __cpu_to_le32(CE_ATTR_FLAGS | CE_ATTR_DIS_INTR),
311 .reserved = __cpu_to_le32(0),
314 /* CE9 target autonomous qcache memcpy */
316 .pipenum = __cpu_to_le32(9),
317 .pipedir = __cpu_to_le32(PIPEDIR_INOUT),
318 .nentries = __cpu_to_le32(32),
319 .nbytes_max = __cpu_to_le32(2048),
320 .flags = __cpu_to_le32(CE_ATTR_FLAGS | CE_ATTR_DIS_INTR),
321 .reserved = __cpu_to_le32(0),
324 /* It not necessary to send target wlan configuration for CE10 & CE11
325 * as these CEs are not actively used in target.
330 * Map from service/endpoint to Copy Engine.
331 * This table is derived from the CE_PCI TABLE, above.
332 * It is passed to the Target at startup for use by firmware.
334 static struct service_to_pipe target_service_to_ce_map_wlan[] = {
336 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VO),
337 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
341 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VO),
342 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
346 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BK),
347 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
351 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BK),
352 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
356 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BE),
357 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
361 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BE),
362 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
366 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VI),
367 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
371 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VI),
372 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
376 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_CONTROL),
377 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
381 __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_CONTROL),
382 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
386 __cpu_to_le32(ATH10K_HTC_SVC_ID_RSVD_CTRL),
387 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
391 __cpu_to_le32(ATH10K_HTC_SVC_ID_RSVD_CTRL),
392 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
396 __cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS),
397 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
401 __cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS),
402 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
406 __cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA_MSG),
407 __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
411 __cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA_MSG),
412 __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
416 /* (Additions here) */
425 static bool ath10k_pci_is_awake(struct ath10k *ar)
427 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
428 u32 val = ioread32(ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
431 return RTC_STATE_V_GET(val) == RTC_STATE_V_ON;
434 static void __ath10k_pci_wake(struct ath10k *ar)
436 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
438 lockdep_assert_held(&ar_pci->ps_lock);
440 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps wake reg refcount %lu awake %d\n",
441 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
443 iowrite32(PCIE_SOC_WAKE_V_MASK,
444 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
445 PCIE_SOC_WAKE_ADDRESS);
448 static void __ath10k_pci_sleep(struct ath10k *ar)
450 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
452 lockdep_assert_held(&ar_pci->ps_lock);
454 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps sleep reg refcount %lu awake %d\n",
455 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
457 iowrite32(PCIE_SOC_WAKE_RESET,
458 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
459 PCIE_SOC_WAKE_ADDRESS);
460 ar_pci->ps_awake = false;
463 static int ath10k_pci_wake_wait(struct ath10k *ar)
468 while (tot_delay < PCIE_WAKE_TIMEOUT) {
469 if (ath10k_pci_is_awake(ar)) {
470 if (tot_delay > PCIE_WAKE_LATE_US)
471 ath10k_warn(ar, "device wakeup took %d ms which is unusally long, otherwise it works normally.\n",
477 tot_delay += curr_delay;
486 static int ath10k_pci_force_wake(struct ath10k *ar)
488 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
495 spin_lock_irqsave(&ar_pci->ps_lock, flags);
497 if (!ar_pci->ps_awake) {
498 iowrite32(PCIE_SOC_WAKE_V_MASK,
499 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
500 PCIE_SOC_WAKE_ADDRESS);
502 ret = ath10k_pci_wake_wait(ar);
504 ar_pci->ps_awake = true;
507 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
512 static void ath10k_pci_force_sleep(struct ath10k *ar)
514 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
517 spin_lock_irqsave(&ar_pci->ps_lock, flags);
519 iowrite32(PCIE_SOC_WAKE_RESET,
520 ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS +
521 PCIE_SOC_WAKE_ADDRESS);
522 ar_pci->ps_awake = false;
524 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
527 static int ath10k_pci_wake(struct ath10k *ar)
529 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
533 if (ar_pci->pci_ps == 0)
536 spin_lock_irqsave(&ar_pci->ps_lock, flags);
538 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps wake refcount %lu awake %d\n",
539 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
541 /* This function can be called very frequently. To avoid excessive
542 * CPU stalls for MMIO reads use a cache var to hold the device state.
544 if (!ar_pci->ps_awake) {
545 __ath10k_pci_wake(ar);
547 ret = ath10k_pci_wake_wait(ar);
549 ar_pci->ps_awake = true;
553 ar_pci->ps_wake_refcount++;
554 WARN_ON(ar_pci->ps_wake_refcount == 0);
557 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
562 static void ath10k_pci_sleep(struct ath10k *ar)
564 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
567 if (ar_pci->pci_ps == 0)
570 spin_lock_irqsave(&ar_pci->ps_lock, flags);
572 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps sleep refcount %lu awake %d\n",
573 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
575 if (WARN_ON(ar_pci->ps_wake_refcount == 0))
578 ar_pci->ps_wake_refcount--;
580 mod_timer(&ar_pci->ps_timer, jiffies +
581 msecs_to_jiffies(ATH10K_PCI_SLEEP_GRACE_PERIOD_MSEC));
584 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
587 static void ath10k_pci_ps_timer(unsigned long ptr)
589 struct ath10k *ar = (void *)ptr;
590 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
593 spin_lock_irqsave(&ar_pci->ps_lock, flags);
595 ath10k_dbg(ar, ATH10K_DBG_PCI_PS, "pci ps timer refcount %lu awake %d\n",
596 ar_pci->ps_wake_refcount, ar_pci->ps_awake);
598 if (ar_pci->ps_wake_refcount > 0)
601 __ath10k_pci_sleep(ar);
604 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
607 static void ath10k_pci_sleep_sync(struct ath10k *ar)
609 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
612 if (ar_pci->pci_ps == 0) {
613 ath10k_pci_force_sleep(ar);
617 del_timer_sync(&ar_pci->ps_timer);
619 spin_lock_irqsave(&ar_pci->ps_lock, flags);
620 WARN_ON(ar_pci->ps_wake_refcount > 0);
621 __ath10k_pci_sleep(ar);
622 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
625 static void ath10k_bus_pci_write32(struct ath10k *ar, u32 offset, u32 value)
627 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
630 if (unlikely(offset + sizeof(value) > ar_pci->mem_len)) {
631 ath10k_warn(ar, "refusing to write mmio out of bounds at 0x%08x - 0x%08zx (max 0x%08zx)\n",
632 offset, offset + sizeof(value), ar_pci->mem_len);
636 ret = ath10k_pci_wake(ar);
638 ath10k_warn(ar, "failed to wake target for write32 of 0x%08x at 0x%08x: %d\n",
643 iowrite32(value, ar_pci->mem + offset);
644 ath10k_pci_sleep(ar);
647 static u32 ath10k_bus_pci_read32(struct ath10k *ar, u32 offset)
649 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
653 if (unlikely(offset + sizeof(val) > ar_pci->mem_len)) {
654 ath10k_warn(ar, "refusing to read mmio out of bounds at 0x%08x - 0x%08zx (max 0x%08zx)\n",
655 offset, offset + sizeof(val), ar_pci->mem_len);
659 ret = ath10k_pci_wake(ar);
661 ath10k_warn(ar, "failed to wake target for read32 at 0x%08x: %d\n",
666 val = ioread32(ar_pci->mem + offset);
667 ath10k_pci_sleep(ar);
672 inline void ath10k_pci_write32(struct ath10k *ar, u32 offset, u32 value)
674 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
676 ar_pci->bus_ops->write32(ar, offset, value);
679 inline u32 ath10k_pci_read32(struct ath10k *ar, u32 offset)
681 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
683 return ar_pci->bus_ops->read32(ar, offset);
686 u32 ath10k_pci_soc_read32(struct ath10k *ar, u32 addr)
688 return ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS + addr);
691 void ath10k_pci_soc_write32(struct ath10k *ar, u32 addr, u32 val)
693 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + addr, val);
696 u32 ath10k_pci_reg_read32(struct ath10k *ar, u32 addr)
698 return ath10k_pci_read32(ar, PCIE_LOCAL_BASE_ADDRESS + addr);
701 void ath10k_pci_reg_write32(struct ath10k *ar, u32 addr, u32 val)
703 ath10k_pci_write32(ar, PCIE_LOCAL_BASE_ADDRESS + addr, val);
706 bool ath10k_pci_irq_pending(struct ath10k *ar)
710 /* Check if the shared legacy irq is for us */
711 cause = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
712 PCIE_INTR_CAUSE_ADDRESS);
713 if (cause & (PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL))
719 void ath10k_pci_disable_and_clear_legacy_irq(struct ath10k *ar)
721 /* IMPORTANT: INTR_CLR register has to be set after
722 * INTR_ENABLE is set to 0, otherwise interrupt can not be
724 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
726 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_CLR_ADDRESS,
727 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
729 /* IMPORTANT: this extra read transaction is required to
730 * flush the posted write buffer. */
731 (void)ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
732 PCIE_INTR_ENABLE_ADDRESS);
735 void ath10k_pci_enable_legacy_irq(struct ath10k *ar)
737 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
738 PCIE_INTR_ENABLE_ADDRESS,
739 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
741 /* IMPORTANT: this extra read transaction is required to
742 * flush the posted write buffer. */
743 (void)ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
744 PCIE_INTR_ENABLE_ADDRESS);
747 static inline const char *ath10k_pci_get_irq_method(struct ath10k *ar)
749 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
751 if (ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_MSI)
757 static int __ath10k_pci_rx_post_buf(struct ath10k_pci_pipe *pipe)
759 struct ath10k *ar = pipe->hif_ce_state;
760 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
761 struct ath10k_ce_pipe *ce_pipe = pipe->ce_hdl;
766 skb = dev_alloc_skb(pipe->buf_sz);
770 WARN_ONCE((unsigned long)skb->data & 3, "unaligned skb");
772 paddr = dma_map_single(ar->dev, skb->data,
773 skb->len + skb_tailroom(skb),
775 if (unlikely(dma_mapping_error(ar->dev, paddr))) {
776 ath10k_warn(ar, "failed to dma map pci rx buf\n");
777 dev_kfree_skb_any(skb);
781 ATH10K_SKB_RXCB(skb)->paddr = paddr;
783 spin_lock_bh(&ar_pci->ce_lock);
784 ret = __ath10k_ce_rx_post_buf(ce_pipe, skb, paddr);
785 spin_unlock_bh(&ar_pci->ce_lock);
787 dma_unmap_single(ar->dev, paddr, skb->len + skb_tailroom(skb),
789 dev_kfree_skb_any(skb);
796 static void ath10k_pci_rx_post_pipe(struct ath10k_pci_pipe *pipe)
798 struct ath10k *ar = pipe->hif_ce_state;
799 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
800 struct ath10k_ce_pipe *ce_pipe = pipe->ce_hdl;
803 if (pipe->buf_sz == 0)
806 if (!ce_pipe->dest_ring)
809 spin_lock_bh(&ar_pci->ce_lock);
810 num = __ath10k_ce_rx_num_free_bufs(ce_pipe);
811 spin_unlock_bh(&ar_pci->ce_lock);
814 ret = __ath10k_pci_rx_post_buf(pipe);
818 ath10k_warn(ar, "failed to post pci rx buf: %d\n", ret);
819 mod_timer(&ar_pci->rx_post_retry, jiffies +
820 ATH10K_PCI_RX_POST_RETRY_MS);
827 void ath10k_pci_rx_post(struct ath10k *ar)
829 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
832 for (i = 0; i < CE_COUNT; i++)
833 ath10k_pci_rx_post_pipe(&ar_pci->pipe_info[i]);
836 void ath10k_pci_rx_replenish_retry(unsigned long ptr)
838 struct ath10k *ar = (void *)ptr;
840 ath10k_pci_rx_post(ar);
843 static u32 ath10k_pci_targ_cpu_to_ce_addr(struct ath10k *ar, u32 addr)
847 switch (ar->hw_rev) {
848 case ATH10K_HW_QCA988X:
849 case ATH10K_HW_QCA9887:
850 case ATH10K_HW_QCA6174:
851 case ATH10K_HW_QCA9377:
852 val = (ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
856 case ATH10K_HW_QCA9888:
857 case ATH10K_HW_QCA99X0:
858 case ATH10K_HW_QCA9984:
859 case ATH10K_HW_QCA4019:
860 val = ath10k_pci_read32(ar, PCIE_BAR_REG_ADDRESS);
864 val |= 0x100000 | (addr & 0xfffff);
869 * Diagnostic read/write access is provided for startup/config/debug usage.
870 * Caller must guarantee proper alignment, when applicable, and single user
873 static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data,
876 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
879 unsigned int completed_nbytes, alloc_nbytes, remaining_bytes;
880 struct ath10k_ce_pipe *ce_diag;
881 /* Host buffer address in CE space */
883 dma_addr_t ce_data_base = 0;
884 void *data_buf = NULL;
887 spin_lock_bh(&ar_pci->ce_lock);
889 ce_diag = ar_pci->ce_diag;
892 * Allocate a temporary bounce buffer to hold caller's data
893 * to be DMA'ed from Target. This guarantees
894 * 1) 4-byte alignment
895 * 2) Buffer in DMA-able space
897 alloc_nbytes = min_t(unsigned int, nbytes, DIAG_TRANSFER_LIMIT);
899 data_buf = (unsigned char *)dma_alloc_coherent(ar->dev,
908 memset(data_buf, 0, alloc_nbytes);
910 remaining_bytes = nbytes;
911 ce_data = ce_data_base;
912 while (remaining_bytes) {
913 nbytes = min_t(unsigned int, remaining_bytes,
914 DIAG_TRANSFER_LIMIT);
916 ret = __ath10k_ce_rx_post_buf(ce_diag, &ce_data, ce_data);
920 /* Request CE to send from Target(!) address to Host buffer */
922 * The address supplied by the caller is in the
923 * Target CPU virtual address space.
925 * In order to use this address with the diagnostic CE,
926 * convert it from Target CPU virtual address space
927 * to CE address space
929 address = ath10k_pci_targ_cpu_to_ce_addr(ar, address);
931 ret = ath10k_ce_send_nolock(ce_diag, NULL, (u32)address, nbytes, 0,
937 while (ath10k_ce_completed_send_next_nolock(ce_diag,
940 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
947 while (ath10k_ce_completed_recv_next_nolock(ce_diag,
953 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
959 if (nbytes != completed_nbytes) {
964 if (*buf != ce_data) {
969 remaining_bytes -= nbytes;
972 ath10k_warn(ar, "failed to read diag value at 0x%x: %d\n",
976 memcpy(data, data_buf, nbytes);
985 dma_free_coherent(ar->dev, alloc_nbytes, data_buf,
988 spin_unlock_bh(&ar_pci->ce_lock);
993 static int ath10k_pci_diag_read32(struct ath10k *ar, u32 address, u32 *value)
998 ret = ath10k_pci_diag_read_mem(ar, address, &val, sizeof(val));
999 *value = __le32_to_cpu(val);
1004 static int __ath10k_pci_diag_read_hi(struct ath10k *ar, void *dest,
1007 u32 host_addr, addr;
1010 host_addr = host_interest_item_address(src);
1012 ret = ath10k_pci_diag_read32(ar, host_addr, &addr);
1014 ath10k_warn(ar, "failed to get memcpy hi address for firmware address %d: %d\n",
1019 ret = ath10k_pci_diag_read_mem(ar, addr, dest, len);
1021 ath10k_warn(ar, "failed to memcpy firmware memory from %d (%d B): %d\n",
1029 #define ath10k_pci_diag_read_hi(ar, dest, src, len) \
1030 __ath10k_pci_diag_read_hi(ar, dest, HI_ITEM(src), len)
1032 int ath10k_pci_diag_write_mem(struct ath10k *ar, u32 address,
1033 const void *data, int nbytes)
1035 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1038 unsigned int completed_nbytes, orig_nbytes, remaining_bytes;
1039 struct ath10k_ce_pipe *ce_diag;
1040 void *data_buf = NULL;
1041 u32 ce_data; /* Host buffer address in CE space */
1042 dma_addr_t ce_data_base = 0;
1045 spin_lock_bh(&ar_pci->ce_lock);
1047 ce_diag = ar_pci->ce_diag;
1050 * Allocate a temporary bounce buffer to hold caller's data
1051 * to be DMA'ed to Target. This guarantees
1052 * 1) 4-byte alignment
1053 * 2) Buffer in DMA-able space
1055 orig_nbytes = nbytes;
1056 data_buf = (unsigned char *)dma_alloc_coherent(ar->dev,
1065 /* Copy caller's data to allocated DMA buf */
1066 memcpy(data_buf, data, orig_nbytes);
1069 * The address supplied by the caller is in the
1070 * Target CPU virtual address space.
1072 * In order to use this address with the diagnostic CE,
1074 * Target CPU virtual address space
1078 address = ath10k_pci_targ_cpu_to_ce_addr(ar, address);
1080 remaining_bytes = orig_nbytes;
1081 ce_data = ce_data_base;
1082 while (remaining_bytes) {
1083 /* FIXME: check cast */
1084 nbytes = min_t(int, remaining_bytes, DIAG_TRANSFER_LIMIT);
1086 /* Set up to receive directly into Target(!) address */
1087 ret = __ath10k_ce_rx_post_buf(ce_diag, &address, address);
1092 * Request CE to send caller-supplied data that
1093 * was copied to bounce buffer to Target(!) address.
1095 ret = ath10k_ce_send_nolock(ce_diag, NULL, (u32)ce_data,
1101 while (ath10k_ce_completed_send_next_nolock(ce_diag,
1105 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
1112 while (ath10k_ce_completed_recv_next_nolock(ce_diag,
1118 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
1124 if (nbytes != completed_nbytes) {
1129 if (*buf != address) {
1134 remaining_bytes -= nbytes;
1141 dma_free_coherent(ar->dev, orig_nbytes, data_buf,
1146 ath10k_warn(ar, "failed to write diag value at 0x%x: %d\n",
1149 spin_unlock_bh(&ar_pci->ce_lock);
1154 static int ath10k_pci_diag_write32(struct ath10k *ar, u32 address, u32 value)
1156 __le32 val = __cpu_to_le32(value);
1158 return ath10k_pci_diag_write_mem(ar, address, &val, sizeof(val));
1161 /* Called by lower (CE) layer when a send to Target completes. */
1162 static void ath10k_pci_htc_tx_cb(struct ath10k_ce_pipe *ce_state)
1164 struct ath10k *ar = ce_state->ar;
1165 struct sk_buff_head list;
1166 struct sk_buff *skb;
1168 __skb_queue_head_init(&list);
1169 while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) {
1170 /* no need to call tx completion for NULL pointers */
1174 __skb_queue_tail(&list, skb);
1177 while ((skb = __skb_dequeue(&list)))
1178 ath10k_htc_tx_completion_handler(ar, skb);
1181 static void ath10k_pci_process_rx_cb(struct ath10k_ce_pipe *ce_state,
1182 void (*callback)(struct ath10k *ar,
1183 struct sk_buff *skb))
1185 struct ath10k *ar = ce_state->ar;
1186 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1187 struct ath10k_pci_pipe *pipe_info = &ar_pci->pipe_info[ce_state->id];
1188 struct sk_buff *skb;
1189 struct sk_buff_head list;
1190 void *transfer_context;
1191 unsigned int nbytes, max_nbytes;
1193 __skb_queue_head_init(&list);
1194 while (ath10k_ce_completed_recv_next(ce_state, &transfer_context,
1196 skb = transfer_context;
1197 max_nbytes = skb->len + skb_tailroom(skb);
1198 dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1199 max_nbytes, DMA_FROM_DEVICE);
1201 if (unlikely(max_nbytes < nbytes)) {
1202 ath10k_warn(ar, "rxed more than expected (nbytes %d, max %d)",
1203 nbytes, max_nbytes);
1204 dev_kfree_skb_any(skb);
1208 skb_put(skb, nbytes);
1209 __skb_queue_tail(&list, skb);
1212 while ((skb = __skb_dequeue(&list))) {
1213 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci rx ce pipe %d len %d\n",
1214 ce_state->id, skb->len);
1215 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci rx: ",
1216 skb->data, skb->len);
1221 ath10k_pci_rx_post_pipe(pipe_info);
1224 static void ath10k_pci_process_htt_rx_cb(struct ath10k_ce_pipe *ce_state,
1225 void (*callback)(struct ath10k *ar,
1226 struct sk_buff *skb))
1228 struct ath10k *ar = ce_state->ar;
1229 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1230 struct ath10k_pci_pipe *pipe_info = &ar_pci->pipe_info[ce_state->id];
1231 struct ath10k_ce_pipe *ce_pipe = pipe_info->ce_hdl;
1232 struct sk_buff *skb;
1233 struct sk_buff_head list;
1234 void *transfer_context;
1235 unsigned int nbytes, max_nbytes, nentries;
1238 /* No need to aquire ce_lock for CE5, since this is the only place CE5
1239 * is processed other than init and deinit. Before releasing CE5
1240 * buffers, interrupts are disabled. Thus CE5 access is serialized.
1242 __skb_queue_head_init(&list);
1243 while (ath10k_ce_completed_recv_next_nolock(ce_state, &transfer_context,
1245 skb = transfer_context;
1246 max_nbytes = skb->len + skb_tailroom(skb);
1248 if (unlikely(max_nbytes < nbytes)) {
1249 ath10k_warn(ar, "rxed more than expected (nbytes %d, max %d)",
1250 nbytes, max_nbytes);
1254 dma_sync_single_for_cpu(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1255 max_nbytes, DMA_FROM_DEVICE);
1256 skb_put(skb, nbytes);
1257 __skb_queue_tail(&list, skb);
1260 nentries = skb_queue_len(&list);
1261 while ((skb = __skb_dequeue(&list))) {
1262 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci rx ce pipe %d len %d\n",
1263 ce_state->id, skb->len);
1264 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci rx: ",
1265 skb->data, skb->len);
1267 orig_len = skb->len;
1269 skb_push(skb, orig_len - skb->len);
1270 skb_reset_tail_pointer(skb);
1273 /*let device gain the buffer again*/
1274 dma_sync_single_for_device(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1275 skb->len + skb_tailroom(skb),
1278 ath10k_ce_rx_update_write_idx(ce_pipe, nentries);
1281 /* Called by lower (CE) layer when data is received from the Target. */
1282 static void ath10k_pci_htc_rx_cb(struct ath10k_ce_pipe *ce_state)
1284 ath10k_pci_process_rx_cb(ce_state, ath10k_htc_rx_completion_handler);
1287 static void ath10k_pci_htt_htc_rx_cb(struct ath10k_ce_pipe *ce_state)
1289 /* CE4 polling needs to be done whenever CE pipe which transports
1290 * HTT Rx (target->host) is processed.
1292 ath10k_ce_per_engine_service(ce_state->ar, 4);
1294 ath10k_pci_process_rx_cb(ce_state, ath10k_htc_rx_completion_handler);
1297 /* Called by lower (CE) layer when data is received from the Target.
1298 * Only 10.4 firmware uses separate CE to transfer pktlog data.
1300 static void ath10k_pci_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state)
1302 ath10k_pci_process_rx_cb(ce_state,
1303 ath10k_htt_rx_pktlog_completion_handler);
1306 /* Called by lower (CE) layer when a send to HTT Target completes. */
1307 static void ath10k_pci_htt_tx_cb(struct ath10k_ce_pipe *ce_state)
1309 struct ath10k *ar = ce_state->ar;
1310 struct sk_buff *skb;
1312 while (ath10k_ce_completed_send_next(ce_state, (void **)&skb) == 0) {
1313 /* no need to call tx completion for NULL pointers */
1317 dma_unmap_single(ar->dev, ATH10K_SKB_CB(skb)->paddr,
1318 skb->len, DMA_TO_DEVICE);
1319 ath10k_htt_hif_tx_complete(ar, skb);
1323 static void ath10k_pci_htt_rx_deliver(struct ath10k *ar, struct sk_buff *skb)
1325 skb_pull(skb, sizeof(struct ath10k_htc_hdr));
1326 ath10k_htt_t2h_msg_handler(ar, skb);
1329 /* Called by lower (CE) layer when HTT data is received from the Target. */
1330 static void ath10k_pci_htt_rx_cb(struct ath10k_ce_pipe *ce_state)
1332 /* CE4 polling needs to be done whenever CE pipe which transports
1333 * HTT Rx (target->host) is processed.
1335 ath10k_ce_per_engine_service(ce_state->ar, 4);
1337 ath10k_pci_process_htt_rx_cb(ce_state, ath10k_pci_htt_rx_deliver);
1340 int ath10k_pci_hif_tx_sg(struct ath10k *ar, u8 pipe_id,
1341 struct ath10k_hif_sg_item *items, int n_items)
1343 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1344 struct ath10k_pci_pipe *pci_pipe = &ar_pci->pipe_info[pipe_id];
1345 struct ath10k_ce_pipe *ce_pipe = pci_pipe->ce_hdl;
1346 struct ath10k_ce_ring *src_ring = ce_pipe->src_ring;
1347 unsigned int nentries_mask;
1348 unsigned int sw_index;
1349 unsigned int write_index;
1352 spin_lock_bh(&ar_pci->ce_lock);
1354 nentries_mask = src_ring->nentries_mask;
1355 sw_index = src_ring->sw_index;
1356 write_index = src_ring->write_index;
1358 if (unlikely(CE_RING_DELTA(nentries_mask,
1359 write_index, sw_index - 1) < n_items)) {
1364 for (i = 0; i < n_items - 1; i++) {
1365 ath10k_dbg(ar, ATH10K_DBG_PCI,
1366 "pci tx item %d paddr 0x%08x len %d n_items %d\n",
1367 i, items[i].paddr, items[i].len, n_items);
1368 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci tx data: ",
1369 items[i].vaddr, items[i].len);
1371 err = ath10k_ce_send_nolock(ce_pipe,
1372 items[i].transfer_context,
1375 items[i].transfer_id,
1376 CE_SEND_FLAG_GATHER);
1381 /* `i` is equal to `n_items -1` after for() */
1383 ath10k_dbg(ar, ATH10K_DBG_PCI,
1384 "pci tx item %d paddr 0x%08x len %d n_items %d\n",
1385 i, items[i].paddr, items[i].len, n_items);
1386 ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci tx data: ",
1387 items[i].vaddr, items[i].len);
1389 err = ath10k_ce_send_nolock(ce_pipe,
1390 items[i].transfer_context,
1393 items[i].transfer_id,
1398 spin_unlock_bh(&ar_pci->ce_lock);
1403 __ath10k_ce_send_revert(ce_pipe);
1405 spin_unlock_bh(&ar_pci->ce_lock);
1409 int ath10k_pci_hif_diag_read(struct ath10k *ar, u32 address, void *buf,
1412 return ath10k_pci_diag_read_mem(ar, address, buf, buf_len);
1415 u16 ath10k_pci_hif_get_free_queue_number(struct ath10k *ar, u8 pipe)
1417 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1419 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif get free queue number\n");
1421 return ath10k_ce_num_free_src_entries(ar_pci->pipe_info[pipe].ce_hdl);
1424 static void ath10k_pci_dump_registers(struct ath10k *ar,
1425 struct ath10k_fw_crash_data *crash_data)
1427 __le32 reg_dump_values[REG_DUMP_COUNT_QCA988X] = {};
1430 lockdep_assert_held(&ar->data_lock);
1432 ret = ath10k_pci_diag_read_hi(ar, ®_dump_values[0],
1434 REG_DUMP_COUNT_QCA988X * sizeof(__le32));
1436 ath10k_err(ar, "failed to read firmware dump area: %d\n", ret);
1440 BUILD_BUG_ON(REG_DUMP_COUNT_QCA988X % 4);
1442 ath10k_err(ar, "firmware register dump:\n");
1443 for (i = 0; i < REG_DUMP_COUNT_QCA988X; i += 4)
1444 ath10k_err(ar, "[%02d]: 0x%08X 0x%08X 0x%08X 0x%08X\n",
1446 __le32_to_cpu(reg_dump_values[i]),
1447 __le32_to_cpu(reg_dump_values[i + 1]),
1448 __le32_to_cpu(reg_dump_values[i + 2]),
1449 __le32_to_cpu(reg_dump_values[i + 3]));
1454 for (i = 0; i < REG_DUMP_COUNT_QCA988X; i++)
1455 crash_data->registers[i] = reg_dump_values[i];
1458 static void ath10k_pci_fw_crashed_dump(struct ath10k *ar)
1460 struct ath10k_fw_crash_data *crash_data;
1463 spin_lock_bh(&ar->data_lock);
1465 ar->stats.fw_crash_counter++;
1467 crash_data = ath10k_debug_get_new_fw_crash_data(ar);
1470 scnprintf(uuid, sizeof(uuid), "%pUl", &crash_data->uuid);
1472 scnprintf(uuid, sizeof(uuid), "n/a");
1474 ath10k_err(ar, "firmware crashed! (uuid %s)\n", uuid);
1475 ath10k_print_driver_info(ar);
1476 ath10k_pci_dump_registers(ar, crash_data);
1478 spin_unlock_bh(&ar->data_lock);
1480 queue_work(ar->workqueue, &ar->restart_work);
1483 void ath10k_pci_hif_send_complete_check(struct ath10k *ar, u8 pipe,
1486 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif send complete check\n");
1491 * Decide whether to actually poll for completions, or just
1492 * wait for a later chance.
1493 * If there seem to be plenty of resources left, then just wait
1494 * since checking involves reading a CE register, which is a
1495 * relatively expensive operation.
1497 resources = ath10k_pci_hif_get_free_queue_number(ar, pipe);
1500 * If at least 50% of the total resources are still available,
1501 * don't bother checking again yet.
1503 if (resources > (host_ce_config_wlan[pipe].src_nentries >> 1))
1506 ath10k_ce_per_engine_service(ar, pipe);
1509 void ath10k_pci_kill_tasklet(struct ath10k *ar)
1511 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1513 tasklet_kill(&ar_pci->intr_tq);
1515 del_timer_sync(&ar_pci->rx_post_retry);
1518 int ath10k_pci_hif_map_service_to_pipe(struct ath10k *ar, u16 service_id,
1519 u8 *ul_pipe, u8 *dl_pipe)
1521 const struct service_to_pipe *entry;
1522 bool ul_set = false, dl_set = false;
1525 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif map service\n");
1527 for (i = 0; i < ARRAY_SIZE(target_service_to_ce_map_wlan); i++) {
1528 entry = &target_service_to_ce_map_wlan[i];
1530 if (__le32_to_cpu(entry->service_id) != service_id)
1533 switch (__le32_to_cpu(entry->pipedir)) {
1538 *dl_pipe = __le32_to_cpu(entry->pipenum);
1543 *ul_pipe = __le32_to_cpu(entry->pipenum);
1549 *dl_pipe = __le32_to_cpu(entry->pipenum);
1550 *ul_pipe = __le32_to_cpu(entry->pipenum);
1557 if (WARN_ON(!ul_set || !dl_set))
1563 void ath10k_pci_hif_get_default_pipe(struct ath10k *ar,
1564 u8 *ul_pipe, u8 *dl_pipe)
1566 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif get default pipe\n");
1568 (void)ath10k_pci_hif_map_service_to_pipe(ar,
1569 ATH10K_HTC_SVC_ID_RSVD_CTRL,
1573 static void ath10k_pci_irq_msi_fw_mask(struct ath10k *ar)
1577 switch (ar->hw_rev) {
1578 case ATH10K_HW_QCA988X:
1579 case ATH10K_HW_QCA9887:
1580 case ATH10K_HW_QCA6174:
1581 case ATH10K_HW_QCA9377:
1582 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
1584 val &= ~CORE_CTRL_PCIE_REG_31_MASK;
1585 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
1586 CORE_CTRL_ADDRESS, val);
1588 case ATH10K_HW_QCA99X0:
1589 case ATH10K_HW_QCA9984:
1590 case ATH10K_HW_QCA9888:
1591 case ATH10K_HW_QCA4019:
1592 /* TODO: Find appropriate register configuration for QCA99X0
1599 static void ath10k_pci_irq_msi_fw_unmask(struct ath10k *ar)
1603 switch (ar->hw_rev) {
1604 case ATH10K_HW_QCA988X:
1605 case ATH10K_HW_QCA9887:
1606 case ATH10K_HW_QCA6174:
1607 case ATH10K_HW_QCA9377:
1608 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
1610 val |= CORE_CTRL_PCIE_REG_31_MASK;
1611 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
1612 CORE_CTRL_ADDRESS, val);
1614 case ATH10K_HW_QCA99X0:
1615 case ATH10K_HW_QCA9984:
1616 case ATH10K_HW_QCA9888:
1617 case ATH10K_HW_QCA4019:
1618 /* TODO: Find appropriate register configuration for QCA99X0
1619 * to unmask irq/MSI.
1625 static void ath10k_pci_irq_disable(struct ath10k *ar)
1627 ath10k_ce_disable_interrupts(ar);
1628 ath10k_pci_disable_and_clear_legacy_irq(ar);
1629 ath10k_pci_irq_msi_fw_mask(ar);
1632 static void ath10k_pci_irq_sync(struct ath10k *ar)
1634 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1636 synchronize_irq(ar_pci->pdev->irq);
1639 static void ath10k_pci_irq_enable(struct ath10k *ar)
1641 ath10k_ce_enable_interrupts(ar);
1642 ath10k_pci_enable_legacy_irq(ar);
1643 ath10k_pci_irq_msi_fw_unmask(ar);
1646 static int ath10k_pci_hif_start(struct ath10k *ar)
1648 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1650 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif start\n");
1652 ath10k_pci_irq_enable(ar);
1653 ath10k_pci_rx_post(ar);
1655 pcie_capability_write_word(ar_pci->pdev, PCI_EXP_LNKCTL,
1661 static void ath10k_pci_rx_pipe_cleanup(struct ath10k_pci_pipe *pci_pipe)
1664 struct ath10k_ce_pipe *ce_pipe;
1665 struct ath10k_ce_ring *ce_ring;
1666 struct sk_buff *skb;
1669 ar = pci_pipe->hif_ce_state;
1670 ce_pipe = pci_pipe->ce_hdl;
1671 ce_ring = ce_pipe->dest_ring;
1676 if (!pci_pipe->buf_sz)
1679 for (i = 0; i < ce_ring->nentries; i++) {
1680 skb = ce_ring->per_transfer_context[i];
1684 ce_ring->per_transfer_context[i] = NULL;
1686 dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
1687 skb->len + skb_tailroom(skb),
1689 dev_kfree_skb_any(skb);
1693 static void ath10k_pci_tx_pipe_cleanup(struct ath10k_pci_pipe *pci_pipe)
1696 struct ath10k_pci *ar_pci;
1697 struct ath10k_ce_pipe *ce_pipe;
1698 struct ath10k_ce_ring *ce_ring;
1699 struct sk_buff *skb;
1702 ar = pci_pipe->hif_ce_state;
1703 ar_pci = ath10k_pci_priv(ar);
1704 ce_pipe = pci_pipe->ce_hdl;
1705 ce_ring = ce_pipe->src_ring;
1710 if (!pci_pipe->buf_sz)
1713 for (i = 0; i < ce_ring->nentries; i++) {
1714 skb = ce_ring->per_transfer_context[i];
1718 ce_ring->per_transfer_context[i] = NULL;
1720 ath10k_htc_tx_completion_handler(ar, skb);
1725 * Cleanup residual buffers for device shutdown:
1726 * buffers that were enqueued for receive
1727 * buffers that were to be sent
1728 * Note: Buffers that had completed but which were
1729 * not yet processed are on a completion queue. They
1730 * are handled when the completion thread shuts down.
1732 static void ath10k_pci_buffer_cleanup(struct ath10k *ar)
1734 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1737 for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) {
1738 struct ath10k_pci_pipe *pipe_info;
1740 pipe_info = &ar_pci->pipe_info[pipe_num];
1741 ath10k_pci_rx_pipe_cleanup(pipe_info);
1742 ath10k_pci_tx_pipe_cleanup(pipe_info);
1746 void ath10k_pci_ce_deinit(struct ath10k *ar)
1750 for (i = 0; i < CE_COUNT; i++)
1751 ath10k_ce_deinit_pipe(ar, i);
1754 void ath10k_pci_flush(struct ath10k *ar)
1756 ath10k_pci_kill_tasklet(ar);
1757 ath10k_pci_buffer_cleanup(ar);
1760 static void ath10k_pci_hif_stop(struct ath10k *ar)
1762 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1763 unsigned long flags;
1765 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif stop\n");
1767 /* Most likely the device has HTT Rx ring configured. The only way to
1768 * prevent the device from accessing (and possible corrupting) host
1769 * memory is to reset the chip now.
1771 * There's also no known way of masking MSI interrupts on the device.
1772 * For ranged MSI the CE-related interrupts can be masked. However
1773 * regardless how many MSI interrupts are assigned the first one
1774 * is always used for firmware indications (crashes) and cannot be
1775 * masked. To prevent the device from asserting the interrupt reset it
1776 * before proceeding with cleanup.
1778 ath10k_pci_safe_chip_reset(ar);
1780 ath10k_pci_irq_disable(ar);
1781 ath10k_pci_irq_sync(ar);
1782 ath10k_pci_flush(ar);
1784 spin_lock_irqsave(&ar_pci->ps_lock, flags);
1785 WARN_ON(ar_pci->ps_wake_refcount > 0);
1786 spin_unlock_irqrestore(&ar_pci->ps_lock, flags);
1789 int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar,
1790 void *req, u32 req_len,
1791 void *resp, u32 *resp_len)
1793 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1794 struct ath10k_pci_pipe *pci_tx = &ar_pci->pipe_info[BMI_CE_NUM_TO_TARG];
1795 struct ath10k_pci_pipe *pci_rx = &ar_pci->pipe_info[BMI_CE_NUM_TO_HOST];
1796 struct ath10k_ce_pipe *ce_tx = pci_tx->ce_hdl;
1797 struct ath10k_ce_pipe *ce_rx = pci_rx->ce_hdl;
1798 dma_addr_t req_paddr = 0;
1799 dma_addr_t resp_paddr = 0;
1800 struct bmi_xfer xfer = {};
1801 void *treq, *tresp = NULL;
1806 if (resp && !resp_len)
1809 if (resp && resp_len && *resp_len == 0)
1812 treq = kmemdup(req, req_len, GFP_KERNEL);
1816 req_paddr = dma_map_single(ar->dev, treq, req_len, DMA_TO_DEVICE);
1817 ret = dma_mapping_error(ar->dev, req_paddr);
1823 if (resp && resp_len) {
1824 tresp = kzalloc(*resp_len, GFP_KERNEL);
1830 resp_paddr = dma_map_single(ar->dev, tresp, *resp_len,
1832 ret = dma_mapping_error(ar->dev, resp_paddr);
1838 xfer.wait_for_resp = true;
1841 ath10k_ce_rx_post_buf(ce_rx, &xfer, resp_paddr);
1844 ret = ath10k_ce_send(ce_tx, &xfer, req_paddr, req_len, -1, 0);
1848 ret = ath10k_pci_bmi_wait(ce_tx, ce_rx, &xfer);
1851 unsigned int unused_nbytes;
1852 unsigned int unused_id;
1854 ath10k_ce_cancel_send_next(ce_tx, NULL, &unused_buffer,
1855 &unused_nbytes, &unused_id);
1857 /* non-zero means we did not time out */
1865 ath10k_ce_revoke_recv_next(ce_rx, NULL, &unused_buffer);
1866 dma_unmap_single(ar->dev, resp_paddr,
1867 *resp_len, DMA_FROM_DEVICE);
1870 dma_unmap_single(ar->dev, req_paddr, req_len, DMA_TO_DEVICE);
1872 if (ret == 0 && resp_len) {
1873 *resp_len = min(*resp_len, xfer.resp_len);
1874 memcpy(resp, tresp, xfer.resp_len);
1883 static void ath10k_pci_bmi_send_done(struct ath10k_ce_pipe *ce_state)
1885 struct bmi_xfer *xfer;
1887 if (ath10k_ce_completed_send_next(ce_state, (void **)&xfer))
1890 xfer->tx_done = true;
1893 static void ath10k_pci_bmi_recv_data(struct ath10k_ce_pipe *ce_state)
1895 struct ath10k *ar = ce_state->ar;
1896 struct bmi_xfer *xfer;
1897 unsigned int nbytes;
1899 if (ath10k_ce_completed_recv_next(ce_state, (void **)&xfer,
1903 if (WARN_ON_ONCE(!xfer))
1906 if (!xfer->wait_for_resp) {
1907 ath10k_warn(ar, "unexpected: BMI data received; ignoring\n");
1911 xfer->resp_len = nbytes;
1912 xfer->rx_done = true;
1915 static int ath10k_pci_bmi_wait(struct ath10k_ce_pipe *tx_pipe,
1916 struct ath10k_ce_pipe *rx_pipe,
1917 struct bmi_xfer *xfer)
1919 unsigned long timeout = jiffies + BMI_COMMUNICATION_TIMEOUT_HZ;
1921 while (time_before_eq(jiffies, timeout)) {
1922 ath10k_pci_bmi_send_done(tx_pipe);
1923 ath10k_pci_bmi_recv_data(rx_pipe);
1925 if (xfer->tx_done && (xfer->rx_done == xfer->wait_for_resp))
1935 * Send an interrupt to the device to wake up the Target CPU
1936 * so it has an opportunity to notice any changed state.
1938 static int ath10k_pci_wake_target_cpu(struct ath10k *ar)
1942 addr = SOC_CORE_BASE_ADDRESS | CORE_CTRL_ADDRESS;
1943 val = ath10k_pci_read32(ar, addr);
1944 val |= CORE_CTRL_CPU_INTR_MASK;
1945 ath10k_pci_write32(ar, addr, val);
1950 static int ath10k_pci_get_num_banks(struct ath10k *ar)
1952 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1954 switch (ar_pci->pdev->device) {
1955 case QCA988X_2_0_DEVICE_ID:
1956 case QCA99X0_2_0_DEVICE_ID:
1957 case QCA9888_2_0_DEVICE_ID:
1958 case QCA9984_1_0_DEVICE_ID:
1959 case QCA9887_1_0_DEVICE_ID:
1961 case QCA6164_2_1_DEVICE_ID:
1962 case QCA6174_2_1_DEVICE_ID:
1963 switch (MS(ar->chip_id, SOC_CHIP_ID_REV)) {
1964 case QCA6174_HW_1_0_CHIP_ID_REV:
1965 case QCA6174_HW_1_1_CHIP_ID_REV:
1966 case QCA6174_HW_2_1_CHIP_ID_REV:
1967 case QCA6174_HW_2_2_CHIP_ID_REV:
1969 case QCA6174_HW_1_3_CHIP_ID_REV:
1971 case QCA6174_HW_3_0_CHIP_ID_REV:
1972 case QCA6174_HW_3_1_CHIP_ID_REV:
1973 case QCA6174_HW_3_2_CHIP_ID_REV:
1977 case QCA9377_1_0_DEVICE_ID:
1981 ath10k_warn(ar, "unknown number of banks, assuming 1\n");
1985 static int ath10k_bus_get_num_banks(struct ath10k *ar)
1987 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1989 return ar_pci->bus_ops->get_num_banks(ar);
1992 int ath10k_pci_init_config(struct ath10k *ar)
1994 u32 interconnect_targ_addr;
1995 u32 pcie_state_targ_addr = 0;
1996 u32 pipe_cfg_targ_addr = 0;
1997 u32 svc_to_pipe_map = 0;
1998 u32 pcie_config_flags = 0;
2000 u32 ealloc_targ_addr;
2002 u32 flag2_targ_addr;
2005 /* Download to Target the CE Config and the service-to-CE map */
2006 interconnect_targ_addr =
2007 host_interest_item_address(HI_ITEM(hi_interconnect_state));
2009 /* Supply Target-side CE configuration */
2010 ret = ath10k_pci_diag_read32(ar, interconnect_targ_addr,
2011 &pcie_state_targ_addr);
2013 ath10k_err(ar, "Failed to get pcie state addr: %d\n", ret);
2017 if (pcie_state_targ_addr == 0) {
2019 ath10k_err(ar, "Invalid pcie state addr\n");
2023 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
2024 offsetof(struct pcie_state,
2026 &pipe_cfg_targ_addr);
2028 ath10k_err(ar, "Failed to get pipe cfg addr: %d\n", ret);
2032 if (pipe_cfg_targ_addr == 0) {
2034 ath10k_err(ar, "Invalid pipe cfg addr\n");
2038 ret = ath10k_pci_diag_write_mem(ar, pipe_cfg_targ_addr,
2039 target_ce_config_wlan,
2040 sizeof(struct ce_pipe_config) *
2041 NUM_TARGET_CE_CONFIG_WLAN);
2044 ath10k_err(ar, "Failed to write pipe cfg: %d\n", ret);
2048 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
2049 offsetof(struct pcie_state,
2053 ath10k_err(ar, "Failed to get svc/pipe map: %d\n", ret);
2057 if (svc_to_pipe_map == 0) {
2059 ath10k_err(ar, "Invalid svc_to_pipe map\n");
2063 ret = ath10k_pci_diag_write_mem(ar, svc_to_pipe_map,
2064 target_service_to_ce_map_wlan,
2065 sizeof(target_service_to_ce_map_wlan));
2067 ath10k_err(ar, "Failed to write svc/pipe map: %d\n", ret);
2071 ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
2072 offsetof(struct pcie_state,
2074 &pcie_config_flags);
2076 ath10k_err(ar, "Failed to get pcie config_flags: %d\n", ret);
2080 pcie_config_flags &= ~PCIE_CONFIG_FLAG_ENABLE_L1;
2082 ret = ath10k_pci_diag_write32(ar, (pcie_state_targ_addr +
2083 offsetof(struct pcie_state,
2087 ath10k_err(ar, "Failed to write pcie config_flags: %d\n", ret);
2091 /* configure early allocation */
2092 ealloc_targ_addr = host_interest_item_address(HI_ITEM(hi_early_alloc));
2094 ret = ath10k_pci_diag_read32(ar, ealloc_targ_addr, &ealloc_value);
2096 ath10k_err(ar, "Faile to get early alloc val: %d\n", ret);
2100 /* first bank is switched to IRAM */
2101 ealloc_value |= ((HI_EARLY_ALLOC_MAGIC << HI_EARLY_ALLOC_MAGIC_SHIFT) &
2102 HI_EARLY_ALLOC_MAGIC_MASK);
2103 ealloc_value |= ((ath10k_bus_get_num_banks(ar) <<
2104 HI_EARLY_ALLOC_IRAM_BANKS_SHIFT) &
2105 HI_EARLY_ALLOC_IRAM_BANKS_MASK);
2107 ret = ath10k_pci_diag_write32(ar, ealloc_targ_addr, ealloc_value);
2109 ath10k_err(ar, "Failed to set early alloc val: %d\n", ret);
2113 /* Tell Target to proceed with initialization */
2114 flag2_targ_addr = host_interest_item_address(HI_ITEM(hi_option_flag2));
2116 ret = ath10k_pci_diag_read32(ar, flag2_targ_addr, &flag2_value);
2118 ath10k_err(ar, "Failed to get option val: %d\n", ret);
2122 flag2_value |= HI_OPTION_EARLY_CFG_DONE;
2124 ret = ath10k_pci_diag_write32(ar, flag2_targ_addr, flag2_value);
2126 ath10k_err(ar, "Failed to set option val: %d\n", ret);
2133 static void ath10k_pci_override_ce_config(struct ath10k *ar)
2135 struct ce_attr *attr;
2136 struct ce_pipe_config *config;
2138 /* For QCA6174 we're overriding the Copy Engine 5 configuration,
2139 * since it is currently used for other feature.
2142 /* Override Host's Copy Engine 5 configuration */
2143 attr = &host_ce_config_wlan[5];
2144 attr->src_sz_max = 0;
2145 attr->dest_nentries = 0;
2147 /* Override Target firmware's Copy Engine configuration */
2148 config = &target_ce_config_wlan[5];
2149 config->pipedir = __cpu_to_le32(PIPEDIR_OUT);
2150 config->nbytes_max = __cpu_to_le32(2048);
2152 /* Map from service/endpoint to Copy Engine */
2153 target_service_to_ce_map_wlan[15].pipenum = __cpu_to_le32(1);
2156 int ath10k_pci_alloc_pipes(struct ath10k *ar)
2158 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2159 struct ath10k_pci_pipe *pipe;
2162 for (i = 0; i < CE_COUNT; i++) {
2163 pipe = &ar_pci->pipe_info[i];
2164 pipe->ce_hdl = &ar_pci->ce_states[i];
2166 pipe->hif_ce_state = ar;
2168 ret = ath10k_ce_alloc_pipe(ar, i, &host_ce_config_wlan[i]);
2170 ath10k_err(ar, "failed to allocate copy engine pipe %d: %d\n",
2175 /* Last CE is Diagnostic Window */
2176 if (i == CE_DIAG_PIPE) {
2177 ar_pci->ce_diag = pipe->ce_hdl;
2181 pipe->buf_sz = (size_t)(host_ce_config_wlan[i].src_sz_max);
2187 void ath10k_pci_free_pipes(struct ath10k *ar)
2191 for (i = 0; i < CE_COUNT; i++)
2192 ath10k_ce_free_pipe(ar, i);
2195 int ath10k_pci_init_pipes(struct ath10k *ar)
2199 for (i = 0; i < CE_COUNT; i++) {
2200 ret = ath10k_ce_init_pipe(ar, i, &host_ce_config_wlan[i]);
2202 ath10k_err(ar, "failed to initialize copy engine pipe %d: %d\n",
2211 static bool ath10k_pci_has_fw_crashed(struct ath10k *ar)
2213 return ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS) &
2214 FW_IND_EVENT_PENDING;
2217 static void ath10k_pci_fw_crashed_clear(struct ath10k *ar)
2221 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS);
2222 val &= ~FW_IND_EVENT_PENDING;
2223 ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, val);
2226 static bool ath10k_pci_has_device_gone(struct ath10k *ar)
2230 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS);
2231 return (val == 0xffffffff);
2234 /* this function effectively clears target memory controller assert line */
2235 static void ath10k_pci_warm_reset_si0(struct ath10k *ar)
2239 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2240 ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS,
2241 val | SOC_RESET_CONTROL_SI0_RST_MASK);
2242 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2246 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2247 ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS,
2248 val & ~SOC_RESET_CONTROL_SI0_RST_MASK);
2249 val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
2254 static void ath10k_pci_warm_reset_cpu(struct ath10k *ar)
2258 ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, 0);
2260 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
2261 SOC_RESET_CONTROL_ADDRESS);
2262 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
2263 val | SOC_RESET_CONTROL_CPU_WARM_RST_MASK);
2266 static void ath10k_pci_warm_reset_ce(struct ath10k *ar)
2270 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
2271 SOC_RESET_CONTROL_ADDRESS);
2273 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
2274 val | SOC_RESET_CONTROL_CE_RST_MASK);
2276 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
2277 val & ~SOC_RESET_CONTROL_CE_RST_MASK);
2280 static void ath10k_pci_warm_reset_clear_lf(struct ath10k *ar)
2284 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
2285 SOC_LF_TIMER_CONTROL0_ADDRESS);
2286 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS +
2287 SOC_LF_TIMER_CONTROL0_ADDRESS,
2288 val & ~SOC_LF_TIMER_CONTROL0_ENABLE_MASK);
2291 static int ath10k_pci_warm_reset(struct ath10k *ar)
2295 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot warm reset\n");
2297 spin_lock_bh(&ar->data_lock);
2298 ar->stats.fw_warm_reset_counter++;
2299 spin_unlock_bh(&ar->data_lock);
2301 ath10k_pci_irq_disable(ar);
2303 /* Make sure the target CPU is not doing anything dangerous, e.g. if it
2304 * were to access copy engine while host performs copy engine reset
2305 * then it is possible for the device to confuse pci-e controller to
2306 * the point of bringing host system to a complete stop (i.e. hang).
2308 ath10k_pci_warm_reset_si0(ar);
2309 ath10k_pci_warm_reset_cpu(ar);
2310 ath10k_pci_init_pipes(ar);
2311 ath10k_pci_wait_for_target_init(ar);
2313 ath10k_pci_warm_reset_clear_lf(ar);
2314 ath10k_pci_warm_reset_ce(ar);
2315 ath10k_pci_warm_reset_cpu(ar);
2316 ath10k_pci_init_pipes(ar);
2318 ret = ath10k_pci_wait_for_target_init(ar);
2320 ath10k_warn(ar, "failed to wait for target init: %d\n", ret);
2324 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot warm reset complete\n");
2329 static int ath10k_pci_qca99x0_soft_chip_reset(struct ath10k *ar)
2331 ath10k_pci_irq_disable(ar);
2332 return ath10k_pci_qca99x0_chip_reset(ar);
2335 static int ath10k_pci_safe_chip_reset(struct ath10k *ar)
2337 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2339 if (!ar_pci->pci_soft_reset)
2342 return ar_pci->pci_soft_reset(ar);
2345 static int ath10k_pci_qca988x_chip_reset(struct ath10k *ar)
2350 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot 988x chip reset\n");
2352 /* Some hardware revisions (e.g. CUS223v2) has issues with cold reset.
2353 * It is thus preferred to use warm reset which is safer but may not be
2354 * able to recover the device from all possible fail scenarios.
2356 * Warm reset doesn't always work on first try so attempt it a few
2357 * times before giving up.
2359 for (i = 0; i < ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS; i++) {
2360 ret = ath10k_pci_warm_reset(ar);
2362 ath10k_warn(ar, "failed to warm reset attempt %d of %d: %d\n",
2363 i + 1, ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS,
2368 /* FIXME: Sometimes copy engine doesn't recover after warm
2369 * reset. In most cases this needs cold reset. In some of these
2370 * cases the device is in such a state that a cold reset may
2373 * Reading any host interest register via copy engine is
2374 * sufficient to verify if device is capable of booting
2377 ret = ath10k_pci_init_pipes(ar);
2379 ath10k_warn(ar, "failed to init copy engine: %d\n",
2384 ret = ath10k_pci_diag_read32(ar, QCA988X_HOST_INTEREST_ADDRESS,
2387 ath10k_warn(ar, "failed to poke copy engine: %d\n",
2392 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot chip reset complete (warm)\n");
2396 if (ath10k_pci_reset_mode == ATH10K_PCI_RESET_WARM_ONLY) {
2397 ath10k_warn(ar, "refusing cold reset as requested\n");
2401 ret = ath10k_pci_cold_reset(ar);
2403 ath10k_warn(ar, "failed to cold reset: %d\n", ret);
2407 ret = ath10k_pci_wait_for_target_init(ar);
2409 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n",
2414 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca988x chip reset complete (cold)\n");
2419 static int ath10k_pci_qca6174_chip_reset(struct ath10k *ar)
2423 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca6174 chip reset\n");
2425 /* FIXME: QCA6174 requires cold + warm reset to work. */
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 ret = ath10k_pci_warm_reset(ar);
2442 ath10k_warn(ar, "failed to warm reset: %d\n", ret);
2446 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca6174 chip reset complete (cold)\n");
2451 static int ath10k_pci_qca99x0_chip_reset(struct ath10k *ar)
2455 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca99x0 chip reset\n");
2457 ret = ath10k_pci_cold_reset(ar);
2459 ath10k_warn(ar, "failed to cold reset: %d\n", ret);
2463 ret = ath10k_pci_wait_for_target_init(ar);
2465 ath10k_warn(ar, "failed to wait for target after cold reset: %d\n",
2470 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca99x0 chip reset complete (cold)\n");
2475 static int ath10k_pci_chip_reset(struct ath10k *ar)
2477 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2479 if (WARN_ON(!ar_pci->pci_hard_reset))
2482 return ar_pci->pci_hard_reset(ar);
2485 static int ath10k_pci_hif_power_up(struct ath10k *ar)
2487 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2490 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif power up\n");
2492 pcie_capability_read_word(ar_pci->pdev, PCI_EXP_LNKCTL,
2494 pcie_capability_write_word(ar_pci->pdev, PCI_EXP_LNKCTL,
2495 ar_pci->link_ctl & ~PCI_EXP_LNKCTL_ASPMC);
2498 * Bring the target up cleanly.
2500 * The target may be in an undefined state with an AUX-powered Target
2501 * and a Host in WoW mode. If the Host crashes, loses power, or is
2502 * restarted (without unloading the driver) then the Target is left
2503 * (aux) powered and running. On a subsequent driver load, the Target
2504 * is in an unexpected state. We try to catch that here in order to
2505 * reset the Target and retry the probe.
2507 ret = ath10k_pci_chip_reset(ar);
2509 if (ath10k_pci_has_fw_crashed(ar)) {
2510 ath10k_warn(ar, "firmware crashed during chip reset\n");
2511 ath10k_pci_fw_crashed_clear(ar);
2512 ath10k_pci_fw_crashed_dump(ar);
2515 ath10k_err(ar, "failed to reset chip: %d\n", ret);
2519 ret = ath10k_pci_init_pipes(ar);
2521 ath10k_err(ar, "failed to initialize CE: %d\n", ret);
2525 ret = ath10k_pci_init_config(ar);
2527 ath10k_err(ar, "failed to setup init config: %d\n", ret);
2531 ret = ath10k_pci_wake_target_cpu(ar);
2533 ath10k_err(ar, "could not wake up target CPU: %d\n", ret);
2540 ath10k_pci_ce_deinit(ar);
2546 void ath10k_pci_hif_power_down(struct ath10k *ar)
2548 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif power down\n");
2550 /* Currently hif_power_up performs effectively a reset and hif_stop
2551 * resets the chip as well so there's no point in resetting here.
2557 static int ath10k_pci_hif_suspend(struct ath10k *ar)
2559 /* The grace timer can still be counting down and ar->ps_awake be true.
2560 * It is known that the device may be asleep after resuming regardless
2561 * of the SoC powersave state before suspending. Hence make sure the
2562 * device is asleep before proceeding.
2564 ath10k_pci_sleep_sync(ar);
2569 static int ath10k_pci_hif_resume(struct ath10k *ar)
2571 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2572 struct pci_dev *pdev = ar_pci->pdev;
2576 ret = ath10k_pci_force_wake(ar);
2578 ath10k_err(ar, "failed to wake up target: %d\n", ret);
2582 /* Suspend/Resume resets the PCI configuration space, so we have to
2583 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
2584 * from interfering with C3 CPU state. pci_restore_state won't help
2585 * here since it only restores the first 64 bytes pci config header.
2587 pci_read_config_dword(pdev, 0x40, &val);
2588 if ((val & 0x0000ff00) != 0)
2589 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
2595 static bool ath10k_pci_validate_cal(void *data, size_t size)
2597 __le16 *cal_words = data;
2604 for (i = 0; i < size / 2; i++)
2605 checksum ^= le16_to_cpu(cal_words[i]);
2607 return checksum == 0xffff;
2610 static void ath10k_pci_enable_eeprom(struct ath10k *ar)
2612 /* Enable SI clock */
2613 ath10k_pci_soc_write32(ar, CLOCK_CONTROL_OFFSET, 0x0);
2615 /* Configure GPIOs for I2C operation */
2616 ath10k_pci_write32(ar,
2617 GPIO_BASE_ADDRESS + GPIO_PIN0_OFFSET +
2618 4 * QCA9887_1_0_I2C_SDA_GPIO_PIN,
2619 SM(QCA9887_1_0_I2C_SDA_PIN_CONFIG,
2621 SM(1, GPIO_PIN0_PAD_PULL));
2623 ath10k_pci_write32(ar,
2624 GPIO_BASE_ADDRESS + GPIO_PIN0_OFFSET +
2625 4 * QCA9887_1_0_SI_CLK_GPIO_PIN,
2626 SM(QCA9887_1_0_SI_CLK_PIN_CONFIG, GPIO_PIN0_CONFIG) |
2627 SM(1, GPIO_PIN0_PAD_PULL));
2629 ath10k_pci_write32(ar,
2631 QCA9887_1_0_GPIO_ENABLE_W1TS_LOW_ADDRESS,
2632 1u << QCA9887_1_0_SI_CLK_GPIO_PIN);
2634 /* In Swift ASIC - EEPROM clock will be (110MHz/512) = 214KHz */
2635 ath10k_pci_write32(ar,
2636 SI_BASE_ADDRESS + SI_CONFIG_OFFSET,
2637 SM(1, SI_CONFIG_ERR_INT) |
2638 SM(1, SI_CONFIG_BIDIR_OD_DATA) |
2639 SM(1, SI_CONFIG_I2C) |
2640 SM(1, SI_CONFIG_POS_SAMPLE) |
2641 SM(1, SI_CONFIG_INACTIVE_DATA) |
2642 SM(1, SI_CONFIG_INACTIVE_CLK) |
2643 SM(8, SI_CONFIG_DIVIDER));
2646 static int ath10k_pci_read_eeprom(struct ath10k *ar, u16 addr, u8 *out)
2651 /* set device select byte and for the read operation */
2652 reg = QCA9887_EEPROM_SELECT_READ |
2653 SM(addr, QCA9887_EEPROM_ADDR_LO) |
2654 SM(addr >> 8, QCA9887_EEPROM_ADDR_HI);
2655 ath10k_pci_write32(ar, SI_BASE_ADDRESS + SI_TX_DATA0_OFFSET, reg);
2657 /* write transmit data, transfer length, and START bit */
2658 ath10k_pci_write32(ar, SI_BASE_ADDRESS + SI_CS_OFFSET,
2659 SM(1, SI_CS_START) | SM(1, SI_CS_RX_CNT) |
2660 SM(4, SI_CS_TX_CNT));
2662 /* wait max 1 sec */
2663 wait_limit = 100000;
2665 /* wait for SI_CS_DONE_INT */
2667 reg = ath10k_pci_read32(ar, SI_BASE_ADDRESS + SI_CS_OFFSET);
2668 if (MS(reg, SI_CS_DONE_INT))
2673 } while (wait_limit > 0);
2675 if (!MS(reg, SI_CS_DONE_INT)) {
2676 ath10k_err(ar, "timeout while reading device EEPROM at %04x\n",
2681 /* clear SI_CS_DONE_INT */
2682 ath10k_pci_write32(ar, SI_BASE_ADDRESS + SI_CS_OFFSET, reg);
2684 if (MS(reg, SI_CS_DONE_ERR)) {
2685 ath10k_err(ar, "failed to read device EEPROM at %04x\n", addr);
2689 /* extract receive data */
2690 reg = ath10k_pci_read32(ar, SI_BASE_ADDRESS + SI_RX_DATA0_OFFSET);
2696 static int ath10k_pci_hif_fetch_cal_eeprom(struct ath10k *ar, void **data,
2703 if (!QCA_REV_9887(ar))
2706 calsize = ar->hw_params.cal_data_len;
2707 caldata = kmalloc(calsize, GFP_KERNEL);
2711 ath10k_pci_enable_eeprom(ar);
2713 for (i = 0; i < calsize; i++) {
2714 ret = ath10k_pci_read_eeprom(ar, i, &caldata[i]);
2719 if (!ath10k_pci_validate_cal(caldata, calsize))
2723 *data_len = calsize;
2733 static const struct ath10k_hif_ops ath10k_pci_hif_ops = {
2734 .tx_sg = ath10k_pci_hif_tx_sg,
2735 .diag_read = ath10k_pci_hif_diag_read,
2736 .diag_write = ath10k_pci_diag_write_mem,
2737 .exchange_bmi_msg = ath10k_pci_hif_exchange_bmi_msg,
2738 .start = ath10k_pci_hif_start,
2739 .stop = ath10k_pci_hif_stop,
2740 .map_service_to_pipe = ath10k_pci_hif_map_service_to_pipe,
2741 .get_default_pipe = ath10k_pci_hif_get_default_pipe,
2742 .send_complete_check = ath10k_pci_hif_send_complete_check,
2743 .get_free_queue_number = ath10k_pci_hif_get_free_queue_number,
2744 .power_up = ath10k_pci_hif_power_up,
2745 .power_down = ath10k_pci_hif_power_down,
2746 .read32 = ath10k_pci_read32,
2747 .write32 = ath10k_pci_write32,
2749 .suspend = ath10k_pci_hif_suspend,
2750 .resume = ath10k_pci_hif_resume,
2752 .fetch_cal_eeprom = ath10k_pci_hif_fetch_cal_eeprom,
2756 * Top-level interrupt handler for all PCI interrupts from a Target.
2757 * When a block of MSI interrupts is allocated, this top-level handler
2758 * is not used; instead, we directly call the correct sub-handler.
2760 static irqreturn_t ath10k_pci_interrupt_handler(int irq, void *arg)
2762 struct ath10k *ar = arg;
2763 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2766 if (ath10k_pci_has_device_gone(ar))
2769 ret = ath10k_pci_force_wake(ar);
2771 ath10k_warn(ar, "failed to wake device up on irq: %d\n", ret);
2775 if (ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_LEGACY) {
2776 if (!ath10k_pci_irq_pending(ar))
2779 ath10k_pci_disable_and_clear_legacy_irq(ar);
2782 tasklet_schedule(&ar_pci->intr_tq);
2787 static void ath10k_pci_tasklet(unsigned long data)
2789 struct ath10k *ar = (struct ath10k *)data;
2790 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2792 if (ath10k_pci_has_fw_crashed(ar)) {
2793 ath10k_pci_irq_disable(ar);
2794 ath10k_pci_fw_crashed_clear(ar);
2795 ath10k_pci_fw_crashed_dump(ar);
2799 ath10k_ce_per_engine_service_any(ar);
2801 /* Re-enable legacy irq that was disabled in the irq handler */
2802 if (ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_LEGACY)
2803 ath10k_pci_enable_legacy_irq(ar);
2806 static int ath10k_pci_request_irq_msi(struct ath10k *ar)
2808 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2811 ret = request_irq(ar_pci->pdev->irq,
2812 ath10k_pci_interrupt_handler,
2813 IRQF_SHARED, "ath10k_pci", ar);
2815 ath10k_warn(ar, "failed to request MSI irq %d: %d\n",
2816 ar_pci->pdev->irq, ret);
2823 static int ath10k_pci_request_irq_legacy(struct ath10k *ar)
2825 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2828 ret = request_irq(ar_pci->pdev->irq,
2829 ath10k_pci_interrupt_handler,
2830 IRQF_SHARED, "ath10k_pci", ar);
2832 ath10k_warn(ar, "failed to request legacy irq %d: %d\n",
2833 ar_pci->pdev->irq, ret);
2840 static int ath10k_pci_request_irq(struct ath10k *ar)
2842 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2844 switch (ar_pci->oper_irq_mode) {
2845 case ATH10K_PCI_IRQ_LEGACY:
2846 return ath10k_pci_request_irq_legacy(ar);
2847 case ATH10K_PCI_IRQ_MSI:
2848 return ath10k_pci_request_irq_msi(ar);
2854 static void ath10k_pci_free_irq(struct ath10k *ar)
2856 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2858 free_irq(ar_pci->pdev->irq, ar);
2861 void ath10k_pci_init_irq_tasklets(struct ath10k *ar)
2863 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2865 tasklet_init(&ar_pci->intr_tq, ath10k_pci_tasklet, (unsigned long)ar);
2868 static int ath10k_pci_init_irq(struct ath10k *ar)
2870 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2873 ath10k_pci_init_irq_tasklets(ar);
2875 if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_AUTO)
2876 ath10k_info(ar, "limiting irq mode to: %d\n",
2877 ath10k_pci_irq_mode);
2880 if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_LEGACY) {
2881 ar_pci->oper_irq_mode = ATH10K_PCI_IRQ_MSI;
2882 ret = pci_enable_msi(ar_pci->pdev);
2891 * A potential race occurs here: The CORE_BASE write
2892 * depends on target correctly decoding AXI address but
2893 * host won't know when target writes BAR to CORE_CTRL.
2894 * This write might get lost if target has NOT written BAR.
2895 * For now, fix the race by repeating the write in below
2896 * synchronization checking. */
2897 ar_pci->oper_irq_mode = ATH10K_PCI_IRQ_LEGACY;
2899 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
2900 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
2905 static void ath10k_pci_deinit_irq_legacy(struct ath10k *ar)
2907 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
2911 static int ath10k_pci_deinit_irq(struct ath10k *ar)
2913 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2915 switch (ar_pci->oper_irq_mode) {
2916 case ATH10K_PCI_IRQ_LEGACY:
2917 ath10k_pci_deinit_irq_legacy(ar);
2920 pci_disable_msi(ar_pci->pdev);
2927 int ath10k_pci_wait_for_target_init(struct ath10k *ar)
2929 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2930 unsigned long timeout;
2933 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot waiting target to initialise\n");
2935 timeout = jiffies + msecs_to_jiffies(ATH10K_PCI_TARGET_WAIT);
2938 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS);
2940 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot target indicator %x\n",
2943 /* target should never return this */
2944 if (val == 0xffffffff)
2947 /* the device has crashed so don't bother trying anymore */
2948 if (val & FW_IND_EVENT_PENDING)
2951 if (val & FW_IND_INITIALIZED)
2954 if (ar_pci->oper_irq_mode == ATH10K_PCI_IRQ_LEGACY)
2955 /* Fix potential race by repeating CORE_BASE writes */
2956 ath10k_pci_enable_legacy_irq(ar);
2959 } while (time_before(jiffies, timeout));
2961 ath10k_pci_disable_and_clear_legacy_irq(ar);
2962 ath10k_pci_irq_msi_fw_mask(ar);
2964 if (val == 0xffffffff) {
2965 ath10k_err(ar, "failed to read device register, device is gone\n");
2969 if (val & FW_IND_EVENT_PENDING) {
2970 ath10k_warn(ar, "device has crashed during init\n");
2974 if (!(val & FW_IND_INITIALIZED)) {
2975 ath10k_err(ar, "failed to receive initialized event from target: %08x\n",
2980 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot target initialised\n");
2984 static int ath10k_pci_cold_reset(struct ath10k *ar)
2988 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cold reset\n");
2990 spin_lock_bh(&ar->data_lock);
2992 ar->stats.fw_cold_reset_counter++;
2994 spin_unlock_bh(&ar->data_lock);
2996 /* Put Target, including PCIe, into RESET. */
2997 val = ath10k_pci_reg_read32(ar, SOC_GLOBAL_RESET_ADDRESS);
2999 ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val);
3001 /* After writing into SOC_GLOBAL_RESET to put device into
3002 * reset and pulling out of reset pcie may not be stable
3003 * for any immediate pcie register access and cause bus error,
3004 * add delay before any pcie access request to fix this issue.
3008 /* Pull Target, including PCIe, out of RESET. */
3010 ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val);
3014 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cold reset complete\n");
3019 static int ath10k_pci_claim(struct ath10k *ar)
3021 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3022 struct pci_dev *pdev = ar_pci->pdev;
3025 pci_set_drvdata(pdev, ar);
3027 ret = pci_enable_device(pdev);
3029 ath10k_err(ar, "failed to enable pci device: %d\n", ret);
3033 ret = pci_request_region(pdev, BAR_NUM, "ath");
3035 ath10k_err(ar, "failed to request region BAR%d: %d\n", BAR_NUM,
3040 /* Target expects 32 bit DMA. Enforce it. */
3041 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3043 ath10k_err(ar, "failed to set dma mask to 32-bit: %d\n", ret);
3047 ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3049 ath10k_err(ar, "failed to set consistent dma mask to 32-bit: %d\n",
3054 pci_set_master(pdev);
3056 /* Arrange for access to Target SoC registers. */
3057 ar_pci->mem_len = pci_resource_len(pdev, BAR_NUM);
3058 ar_pci->mem = pci_iomap(pdev, BAR_NUM, 0);
3060 ath10k_err(ar, "failed to iomap BAR%d\n", BAR_NUM);
3065 ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot pci_mem 0x%p\n", ar_pci->mem);
3069 pci_clear_master(pdev);
3072 pci_release_region(pdev, BAR_NUM);
3075 pci_disable_device(pdev);
3080 static void ath10k_pci_release(struct ath10k *ar)
3082 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3083 struct pci_dev *pdev = ar_pci->pdev;
3085 pci_iounmap(pdev, ar_pci->mem);
3086 pci_release_region(pdev, BAR_NUM);
3087 pci_clear_master(pdev);
3088 pci_disable_device(pdev);
3091 static bool ath10k_pci_chip_is_supported(u32 dev_id, u32 chip_id)
3093 const struct ath10k_pci_supp_chip *supp_chip;
3095 u32 rev_id = MS(chip_id, SOC_CHIP_ID_REV);
3097 for (i = 0; i < ARRAY_SIZE(ath10k_pci_supp_chips); i++) {
3098 supp_chip = &ath10k_pci_supp_chips[i];
3100 if (supp_chip->dev_id == dev_id &&
3101 supp_chip->rev_id == rev_id)
3108 int ath10k_pci_setup_resource(struct ath10k *ar)
3110 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
3113 spin_lock_init(&ar_pci->ce_lock);
3114 spin_lock_init(&ar_pci->ps_lock);
3116 setup_timer(&ar_pci->rx_post_retry, ath10k_pci_rx_replenish_retry,
3119 if (QCA_REV_6174(ar))
3120 ath10k_pci_override_ce_config(ar);
3122 ret = ath10k_pci_alloc_pipes(ar);
3124 ath10k_err(ar, "failed to allocate copy engine pipes: %d\n",
3132 void ath10k_pci_release_resource(struct ath10k *ar)
3134 ath10k_pci_kill_tasklet(ar);
3135 ath10k_pci_ce_deinit(ar);
3136 ath10k_pci_free_pipes(ar);
3139 static const struct ath10k_bus_ops ath10k_pci_bus_ops = {
3140 .read32 = ath10k_bus_pci_read32,
3141 .write32 = ath10k_bus_pci_write32,
3142 .get_num_banks = ath10k_pci_get_num_banks,
3145 static int ath10k_pci_probe(struct pci_dev *pdev,
3146 const struct pci_device_id *pci_dev)
3150 struct ath10k_pci *ar_pci;
3151 enum ath10k_hw_rev hw_rev;
3154 int (*pci_soft_reset)(struct ath10k *ar);
3155 int (*pci_hard_reset)(struct ath10k *ar);
3157 switch (pci_dev->device) {
3158 case QCA988X_2_0_DEVICE_ID:
3159 hw_rev = ATH10K_HW_QCA988X;
3161 pci_soft_reset = ath10k_pci_warm_reset;
3162 pci_hard_reset = ath10k_pci_qca988x_chip_reset;
3164 case QCA9887_1_0_DEVICE_ID:
3165 hw_rev = ATH10K_HW_QCA9887;
3167 pci_soft_reset = ath10k_pci_warm_reset;
3168 pci_hard_reset = ath10k_pci_qca988x_chip_reset;
3170 case QCA6164_2_1_DEVICE_ID:
3171 case QCA6174_2_1_DEVICE_ID:
3172 hw_rev = ATH10K_HW_QCA6174;
3174 pci_soft_reset = ath10k_pci_warm_reset;
3175 pci_hard_reset = ath10k_pci_qca6174_chip_reset;
3177 case QCA99X0_2_0_DEVICE_ID:
3178 hw_rev = ATH10K_HW_QCA99X0;
3180 pci_soft_reset = ath10k_pci_qca99x0_soft_chip_reset;
3181 pci_hard_reset = ath10k_pci_qca99x0_chip_reset;
3183 case QCA9984_1_0_DEVICE_ID:
3184 hw_rev = ATH10K_HW_QCA9984;
3186 pci_soft_reset = ath10k_pci_qca99x0_soft_chip_reset;
3187 pci_hard_reset = ath10k_pci_qca99x0_chip_reset;
3189 case QCA9888_2_0_DEVICE_ID:
3190 hw_rev = ATH10K_HW_QCA9888;
3192 pci_soft_reset = ath10k_pci_qca99x0_soft_chip_reset;
3193 pci_hard_reset = ath10k_pci_qca99x0_chip_reset;
3195 case QCA9377_1_0_DEVICE_ID:
3196 hw_rev = ATH10K_HW_QCA9377;
3198 pci_soft_reset = NULL;
3199 pci_hard_reset = ath10k_pci_qca6174_chip_reset;
3206 ar = ath10k_core_create(sizeof(*ar_pci), &pdev->dev, ATH10K_BUS_PCI,
3207 hw_rev, &ath10k_pci_hif_ops);
3209 dev_err(&pdev->dev, "failed to allocate core\n");
3213 ath10k_dbg(ar, ATH10K_DBG_BOOT, "pci probe %04x:%04x %04x:%04x\n",
3214 pdev->vendor, pdev->device,
3215 pdev->subsystem_vendor, pdev->subsystem_device);
3217 ar_pci = ath10k_pci_priv(ar);
3218 ar_pci->pdev = pdev;
3219 ar_pci->dev = &pdev->dev;
3221 ar->dev_id = pci_dev->device;
3222 ar_pci->pci_ps = pci_ps;
3223 ar_pci->bus_ops = &ath10k_pci_bus_ops;
3224 ar_pci->pci_soft_reset = pci_soft_reset;
3225 ar_pci->pci_hard_reset = pci_hard_reset;
3227 ar->id.vendor = pdev->vendor;
3228 ar->id.device = pdev->device;
3229 ar->id.subsystem_vendor = pdev->subsystem_vendor;
3230 ar->id.subsystem_device = pdev->subsystem_device;
3232 setup_timer(&ar_pci->ps_timer, ath10k_pci_ps_timer,
3235 ret = ath10k_pci_setup_resource(ar);
3237 ath10k_err(ar, "failed to setup resource: %d\n", ret);
3238 goto err_core_destroy;
3241 ret = ath10k_pci_claim(ar);
3243 ath10k_err(ar, "failed to claim device: %d\n", ret);
3244 goto err_free_pipes;
3247 ret = ath10k_pci_force_wake(ar);
3249 ath10k_warn(ar, "failed to wake up device : %d\n", ret);
3253 ath10k_pci_ce_deinit(ar);
3254 ath10k_pci_irq_disable(ar);
3256 ret = ath10k_pci_init_irq(ar);
3258 ath10k_err(ar, "failed to init irqs: %d\n", ret);
3262 ath10k_info(ar, "pci irq %s oper_irq_mode %d irq_mode %d reset_mode %d\n",
3263 ath10k_pci_get_irq_method(ar), ar_pci->oper_irq_mode,
3264 ath10k_pci_irq_mode, ath10k_pci_reset_mode);
3266 ret = ath10k_pci_request_irq(ar);
3268 ath10k_warn(ar, "failed to request irqs: %d\n", ret);
3269 goto err_deinit_irq;
3272 ret = ath10k_pci_chip_reset(ar);
3274 ath10k_err(ar, "failed to reset chip: %d\n", ret);
3278 chip_id = ath10k_pci_soc_read32(ar, SOC_CHIP_ID_ADDRESS);
3279 if (chip_id == 0xffffffff) {
3280 ath10k_err(ar, "failed to get chip id\n");
3284 if (!ath10k_pci_chip_is_supported(pdev->device, chip_id)) {
3285 ath10k_err(ar, "device %04x with chip_id %08x isn't supported\n",
3286 pdev->device, chip_id);
3290 ret = ath10k_core_register(ar, chip_id);
3292 ath10k_err(ar, "failed to register driver core: %d\n", ret);
3299 ath10k_pci_free_irq(ar);
3300 ath10k_pci_kill_tasklet(ar);
3303 ath10k_pci_deinit_irq(ar);
3306 ath10k_pci_sleep_sync(ar);
3307 ath10k_pci_release(ar);
3310 ath10k_pci_free_pipes(ar);
3313 ath10k_core_destroy(ar);
3318 static void ath10k_pci_remove(struct pci_dev *pdev)
3320 struct ath10k *ar = pci_get_drvdata(pdev);
3321 struct ath10k_pci *ar_pci;
3323 ath10k_dbg(ar, ATH10K_DBG_PCI, "pci remove\n");
3328 ar_pci = ath10k_pci_priv(ar);
3333 ath10k_core_unregister(ar);
3334 ath10k_pci_free_irq(ar);
3335 ath10k_pci_deinit_irq(ar);
3336 ath10k_pci_release_resource(ar);
3337 ath10k_pci_sleep_sync(ar);
3338 ath10k_pci_release(ar);
3339 ath10k_core_destroy(ar);
3342 MODULE_DEVICE_TABLE(pci, ath10k_pci_id_table);
3344 static struct pci_driver ath10k_pci_driver = {
3345 .name = "ath10k_pci",
3346 .id_table = ath10k_pci_id_table,
3347 .probe = ath10k_pci_probe,
3348 .remove = ath10k_pci_remove,
3351 static int __init ath10k_pci_init(void)
3355 ret = pci_register_driver(&ath10k_pci_driver);
3357 printk(KERN_ERR "failed to register ath10k pci driver: %d\n",
3360 ret = ath10k_ahb_init();
3362 printk(KERN_ERR "ahb init failed: %d\n", ret);
3366 module_init(ath10k_pci_init);
3368 static void __exit ath10k_pci_exit(void)
3370 pci_unregister_driver(&ath10k_pci_driver);
3374 module_exit(ath10k_pci_exit);
3376 MODULE_AUTHOR("Qualcomm Atheros");
3377 MODULE_DESCRIPTION("Driver support for Qualcomm Atheros 802.11ac WLAN PCIe/AHB devices");
3378 MODULE_LICENSE("Dual BSD/GPL");
3380 /* QCA988x 2.0 firmware files */
3381 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API2_FILE);
3382 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API3_FILE);
3383 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API4_FILE);
3384 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API5_FILE);
3385 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" QCA988X_HW_2_0_BOARD_DATA_FILE);
3386 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_BOARD_API2_FILE);
3388 /* QCA9887 1.0 firmware files */
3389 MODULE_FIRMWARE(QCA9887_HW_1_0_FW_DIR "/" ATH10K_FW_API5_FILE);
3390 MODULE_FIRMWARE(QCA9887_HW_1_0_FW_DIR "/" QCA9887_HW_1_0_BOARD_DATA_FILE);
3391 MODULE_FIRMWARE(QCA9887_HW_1_0_FW_DIR "/" ATH10K_BOARD_API2_FILE);
3393 /* QCA6174 2.1 firmware files */
3394 MODULE_FIRMWARE(QCA6174_HW_2_1_FW_DIR "/" ATH10K_FW_API4_FILE);
3395 MODULE_FIRMWARE(QCA6174_HW_2_1_FW_DIR "/" ATH10K_FW_API5_FILE);
3396 MODULE_FIRMWARE(QCA6174_HW_2_1_FW_DIR "/" QCA6174_HW_2_1_BOARD_DATA_FILE);
3397 MODULE_FIRMWARE(QCA6174_HW_2_1_FW_DIR "/" ATH10K_BOARD_API2_FILE);
3399 /* QCA6174 3.1 firmware files */
3400 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" ATH10K_FW_API4_FILE);
3401 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" ATH10K_FW_API5_FILE);
3402 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" QCA6174_HW_3_0_BOARD_DATA_FILE);
3403 MODULE_FIRMWARE(QCA6174_HW_3_0_FW_DIR "/" ATH10K_BOARD_API2_FILE);
3405 /* QCA9377 1.0 firmware files */
3406 MODULE_FIRMWARE(QCA9377_HW_1_0_FW_DIR "/" ATH10K_FW_API5_FILE);
3407 MODULE_FIRMWARE(QCA9377_HW_1_0_FW_DIR "/" QCA9377_HW_1_0_BOARD_DATA_FILE);