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
);