xref: /freebsd/sys/contrib/dev/athk/ath11k/ahb.c (revision e6bfd18d21b225af6a0ed67ceeaf1293b7b9eba5)
1 // SPDX-License-Identifier: BSD-3-Clause-Clear
2 /*
3  * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
4  */
5 
6 #include <linux/module.h>
7 #include <linux/platform_device.h>
8 #include <linux/of_device.h>
9 #include <linux/of.h>
10 #include <linux/dma-mapping.h>
11 #include "ahb.h"
12 #include "debug.h"
13 #include "hif.h"
14 #include <linux/remoteproc.h>
15 
16 static const struct of_device_id ath11k_ahb_of_match[] = {
17 	/* TODO: Should we change the compatible string to something similar
18 	 * to one that ath10k uses?
19 	 */
20 	{ .compatible = "qcom,ipq8074-wifi",
21 	  .data = (void *)ATH11K_HW_IPQ8074,
22 	},
23 	{ .compatible = "qcom,ipq6018-wifi",
24 	  .data = (void *)ATH11K_HW_IPQ6018_HW10,
25 	},
26 	{ }
27 };
28 
29 MODULE_DEVICE_TABLE(of, ath11k_ahb_of_match);
30 
31 static const struct ath11k_bus_params ath11k_ahb_bus_params = {
32 	.mhi_support = false,
33 	.m3_fw_support = false,
34 	.fixed_bdf_addr = true,
35 	.fixed_mem_region = true,
36 };
37 
38 #define ATH11K_IRQ_CE0_OFFSET 4
39 
40 static const char *irq_name[ATH11K_IRQ_NUM_MAX] = {
41 	"misc-pulse1",
42 	"misc-latch",
43 	"sw-exception",
44 	"watchdog",
45 	"ce0",
46 	"ce1",
47 	"ce2",
48 	"ce3",
49 	"ce4",
50 	"ce5",
51 	"ce6",
52 	"ce7",
53 	"ce8",
54 	"ce9",
55 	"ce10",
56 	"ce11",
57 	"host2wbm-desc-feed",
58 	"host2reo-re-injection",
59 	"host2reo-command",
60 	"host2rxdma-monitor-ring3",
61 	"host2rxdma-monitor-ring2",
62 	"host2rxdma-monitor-ring1",
63 	"reo2ost-exception",
64 	"wbm2host-rx-release",
65 	"reo2host-status",
66 	"reo2host-destination-ring4",
67 	"reo2host-destination-ring3",
68 	"reo2host-destination-ring2",
69 	"reo2host-destination-ring1",
70 	"rxdma2host-monitor-destination-mac3",
71 	"rxdma2host-monitor-destination-mac2",
72 	"rxdma2host-monitor-destination-mac1",
73 	"ppdu-end-interrupts-mac3",
74 	"ppdu-end-interrupts-mac2",
75 	"ppdu-end-interrupts-mac1",
76 	"rxdma2host-monitor-status-ring-mac3",
77 	"rxdma2host-monitor-status-ring-mac2",
78 	"rxdma2host-monitor-status-ring-mac1",
79 	"host2rxdma-host-buf-ring-mac3",
80 	"host2rxdma-host-buf-ring-mac2",
81 	"host2rxdma-host-buf-ring-mac1",
82 	"rxdma2host-destination-ring-mac3",
83 	"rxdma2host-destination-ring-mac2",
84 	"rxdma2host-destination-ring-mac1",
85 	"host2tcl-input-ring4",
86 	"host2tcl-input-ring3",
87 	"host2tcl-input-ring2",
88 	"host2tcl-input-ring1",
89 	"wbm2host-tx-completions-ring3",
90 	"wbm2host-tx-completions-ring2",
91 	"wbm2host-tx-completions-ring1",
92 	"tcl2host-status-ring",
93 };
94 
95 /* enum ext_irq_num - irq numbers that can be used by external modules
96  * like datapath
97  */
98 enum ext_irq_num {
99 	host2wbm_desc_feed = 16,
100 	host2reo_re_injection,
101 	host2reo_command,
102 	host2rxdma_monitor_ring3,
103 	host2rxdma_monitor_ring2,
104 	host2rxdma_monitor_ring1,
105 	reo2host_exception,
106 	wbm2host_rx_release,
107 	reo2host_status,
108 	reo2host_destination_ring4,
109 	reo2host_destination_ring3,
110 	reo2host_destination_ring2,
111 	reo2host_destination_ring1,
112 	rxdma2host_monitor_destination_mac3,
113 	rxdma2host_monitor_destination_mac2,
114 	rxdma2host_monitor_destination_mac1,
115 	ppdu_end_interrupts_mac3,
116 	ppdu_end_interrupts_mac2,
117 	ppdu_end_interrupts_mac1,
118 	rxdma2host_monitor_status_ring_mac3,
119 	rxdma2host_monitor_status_ring_mac2,
120 	rxdma2host_monitor_status_ring_mac1,
121 	host2rxdma_host_buf_ring_mac3,
122 	host2rxdma_host_buf_ring_mac2,
123 	host2rxdma_host_buf_ring_mac1,
124 	rxdma2host_destination_ring_mac3,
125 	rxdma2host_destination_ring_mac2,
126 	rxdma2host_destination_ring_mac1,
127 	host2tcl_input_ring4,
128 	host2tcl_input_ring3,
129 	host2tcl_input_ring2,
130 	host2tcl_input_ring1,
131 	wbm2host_tx_completions_ring3,
132 	wbm2host_tx_completions_ring2,
133 	wbm2host_tx_completions_ring1,
134 	tcl2host_status_ring,
135 };
136 
137 static inline u32 ath11k_ahb_read32(struct ath11k_base *ab, u32 offset)
138 {
139 	return ioread32(ab->mem + offset);
140 }
141 
142 static inline void ath11k_ahb_write32(struct ath11k_base *ab, u32 offset, u32 value)
143 {
144 	iowrite32(value, ab->mem + offset);
145 }
146 
147 static void ath11k_ahb_kill_tasklets(struct ath11k_base *ab)
148 {
149 	int i;
150 
151 	for (i = 0; i < ab->hw_params.ce_count; i++) {
152 		struct ath11k_ce_pipe *ce_pipe = &ab->ce.ce_pipe[i];
153 
154 		if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
155 			continue;
156 
157 		tasklet_kill(&ce_pipe->intr_tq);
158 	}
159 }
160 
161 static void ath11k_ahb_ext_grp_disable(struct ath11k_ext_irq_grp *irq_grp)
162 {
163 	int i;
164 
165 	for (i = 0; i < irq_grp->num_irq; i++)
166 		disable_irq_nosync(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
167 }
168 
169 static void __ath11k_ahb_ext_irq_disable(struct ath11k_base *ab)
170 {
171 	int i;
172 
173 	for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
174 		struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
175 
176 		ath11k_ahb_ext_grp_disable(irq_grp);
177 
178 		if (irq_grp->napi_enabled) {
179 			napi_synchronize(&irq_grp->napi);
180 			napi_disable(&irq_grp->napi);
181 			irq_grp->napi_enabled = false;
182 		}
183 	}
184 }
185 
186 static void ath11k_ahb_ext_grp_enable(struct ath11k_ext_irq_grp *irq_grp)
187 {
188 	int i;
189 
190 	for (i = 0; i < irq_grp->num_irq; i++)
191 		enable_irq(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
192 }
193 
194 static void ath11k_ahb_setbit32(struct ath11k_base *ab, u8 bit, u32 offset)
195 {
196 	u32 val;
197 
198 	val = ath11k_ahb_read32(ab, offset);
199 	ath11k_ahb_write32(ab, offset, val | BIT(bit));
200 }
201 
202 static void ath11k_ahb_clearbit32(struct ath11k_base *ab, u8 bit, u32 offset)
203 {
204 	u32 val;
205 
206 	val = ath11k_ahb_read32(ab, offset);
207 	ath11k_ahb_write32(ab, offset, val & ~BIT(bit));
208 }
209 
210 static void ath11k_ahb_ce_irq_enable(struct ath11k_base *ab, u16 ce_id)
211 {
212 	const struct ce_attr *ce_attr;
213 
214 	ce_attr = &ab->hw_params.host_ce_config[ce_id];
215 	if (ce_attr->src_nentries)
216 		ath11k_ahb_setbit32(ab, ce_id, CE_HOST_IE_ADDRESS);
217 
218 	if (ce_attr->dest_nentries) {
219 		ath11k_ahb_setbit32(ab, ce_id, CE_HOST_IE_2_ADDRESS);
220 		ath11k_ahb_setbit32(ab, ce_id + CE_HOST_IE_3_SHIFT,
221 				    CE_HOST_IE_3_ADDRESS);
222 	}
223 }
224 
225 static void ath11k_ahb_ce_irq_disable(struct ath11k_base *ab, u16 ce_id)
226 {
227 	const struct ce_attr *ce_attr;
228 
229 	ce_attr = &ab->hw_params.host_ce_config[ce_id];
230 	if (ce_attr->src_nentries)
231 		ath11k_ahb_clearbit32(ab, ce_id, CE_HOST_IE_ADDRESS);
232 
233 	if (ce_attr->dest_nentries) {
234 		ath11k_ahb_clearbit32(ab, ce_id, CE_HOST_IE_2_ADDRESS);
235 		ath11k_ahb_clearbit32(ab, ce_id + CE_HOST_IE_3_SHIFT,
236 				      CE_HOST_IE_3_ADDRESS);
237 	}
238 }
239 
240 static void ath11k_ahb_sync_ce_irqs(struct ath11k_base *ab)
241 {
242 	int i;
243 	int irq_idx;
244 
245 	for (i = 0; i < ab->hw_params.ce_count; i++) {
246 		if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
247 			continue;
248 
249 		irq_idx = ATH11K_IRQ_CE0_OFFSET + i;
250 		synchronize_irq(ab->irq_num[irq_idx]);
251 	}
252 }
253 
254 static void ath11k_ahb_sync_ext_irqs(struct ath11k_base *ab)
255 {
256 	int i, j;
257 	int irq_idx;
258 
259 	for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
260 		struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
261 
262 		for (j = 0; j < irq_grp->num_irq; j++) {
263 			irq_idx = irq_grp->irqs[j];
264 			synchronize_irq(ab->irq_num[irq_idx]);
265 		}
266 	}
267 }
268 
269 static void ath11k_ahb_ce_irqs_enable(struct ath11k_base *ab)
270 {
271 	int i;
272 
273 	for (i = 0; i < ab->hw_params.ce_count; i++) {
274 		if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
275 			continue;
276 		ath11k_ahb_ce_irq_enable(ab, i);
277 	}
278 }
279 
280 static void ath11k_ahb_ce_irqs_disable(struct ath11k_base *ab)
281 {
282 	int i;
283 
284 	for (i = 0; i < ab->hw_params.ce_count; i++) {
285 		if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
286 			continue;
287 		ath11k_ahb_ce_irq_disable(ab, i);
288 	}
289 }
290 
291 static int ath11k_ahb_start(struct ath11k_base *ab)
292 {
293 	ath11k_ahb_ce_irqs_enable(ab);
294 	ath11k_ce_rx_post_buf(ab);
295 
296 	return 0;
297 }
298 
299 static void ath11k_ahb_ext_irq_enable(struct ath11k_base *ab)
300 {
301 	int i;
302 
303 	for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
304 		struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
305 
306 		if (!irq_grp->napi_enabled) {
307 			napi_enable(&irq_grp->napi);
308 			irq_grp->napi_enabled = true;
309 		}
310 		ath11k_ahb_ext_grp_enable(irq_grp);
311 	}
312 }
313 
314 static void ath11k_ahb_ext_irq_disable(struct ath11k_base *ab)
315 {
316 	__ath11k_ahb_ext_irq_disable(ab);
317 	ath11k_ahb_sync_ext_irqs(ab);
318 }
319 
320 static void ath11k_ahb_stop(struct ath11k_base *ab)
321 {
322 	if (!test_bit(ATH11K_FLAG_CRASH_FLUSH, &ab->dev_flags))
323 		ath11k_ahb_ce_irqs_disable(ab);
324 	ath11k_ahb_sync_ce_irqs(ab);
325 	ath11k_ahb_kill_tasklets(ab);
326 	del_timer_sync(&ab->rx_replenish_retry);
327 	ath11k_ce_cleanup_pipes(ab);
328 }
329 
330 static int ath11k_ahb_power_up(struct ath11k_base *ab)
331 {
332 	struct ath11k_ahb *ab_ahb = ath11k_ahb_priv(ab);
333 	int ret;
334 
335 	ret = rproc_boot(ab_ahb->tgt_rproc);
336 	if (ret)
337 		ath11k_err(ab, "failed to boot the remote processor Q6\n");
338 
339 	return ret;
340 }
341 
342 static void ath11k_ahb_power_down(struct ath11k_base *ab)
343 {
344 	struct ath11k_ahb *ab_ahb = ath11k_ahb_priv(ab);
345 
346 	rproc_shutdown(ab_ahb->tgt_rproc);
347 }
348 
349 static int ath11k_ahb_fwreset_from_cold_boot(struct ath11k_base *ab)
350 {
351 	int timeout;
352 
353 	if (ath11k_cold_boot_cal == 0 || ab->qmi.cal_done ||
354 	    ab->hw_params.cold_boot_calib == 0)
355 		return 0;
356 
357 	ath11k_dbg(ab, ATH11K_DBG_AHB, "wait for cold boot done\n");
358 	timeout = wait_event_timeout(ab->qmi.cold_boot_waitq,
359 				     (ab->qmi.cal_done  == 1),
360 				     ATH11K_COLD_BOOT_FW_RESET_DELAY);
361 	if (timeout <= 0) {
362 		ath11k_cold_boot_cal = 0;
363 		ath11k_warn(ab, "Coldboot Calibration failed timed out\n");
364 	}
365 
366 	/* reset the firmware */
367 	ath11k_ahb_power_down(ab);
368 	ath11k_ahb_power_up(ab);
369 
370 	ath11k_dbg(ab, ATH11K_DBG_AHB, "exited from cold boot mode\n");
371 	return 0;
372 }
373 
374 static void ath11k_ahb_init_qmi_ce_config(struct ath11k_base *ab)
375 {
376 	struct ath11k_qmi_ce_cfg *cfg = &ab->qmi.ce_cfg;
377 
378 	cfg->tgt_ce_len = ab->hw_params.target_ce_count;
379 	cfg->tgt_ce = ab->hw_params.target_ce_config;
380 	cfg->svc_to_ce_map_len = ab->hw_params.svc_to_ce_map_len;
381 	cfg->svc_to_ce_map = ab->hw_params.svc_to_ce_map;
382 	ab->qmi.service_ins_id = ab->hw_params.qmi_service_ins_id;
383 }
384 
385 static void ath11k_ahb_free_ext_irq(struct ath11k_base *ab)
386 {
387 	int i, j;
388 
389 	for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
390 		struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
391 
392 		for (j = 0; j < irq_grp->num_irq; j++)
393 			free_irq(ab->irq_num[irq_grp->irqs[j]], irq_grp);
394 	}
395 }
396 
397 static void ath11k_ahb_free_irq(struct ath11k_base *ab)
398 {
399 	int irq_idx;
400 	int i;
401 
402 	for (i = 0; i < ab->hw_params.ce_count; i++) {
403 		if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
404 			continue;
405 		irq_idx = ATH11K_IRQ_CE0_OFFSET + i;
406 		free_irq(ab->irq_num[irq_idx], &ab->ce.ce_pipe[i]);
407 	}
408 
409 	ath11k_ahb_free_ext_irq(ab);
410 }
411 
412 static void ath11k_ahb_ce_tasklet(struct tasklet_struct *t)
413 {
414 	struct ath11k_ce_pipe *ce_pipe = from_tasklet(ce_pipe, t, intr_tq);
415 
416 	ath11k_ce_per_engine_service(ce_pipe->ab, ce_pipe->pipe_num);
417 
418 	ath11k_ahb_ce_irq_enable(ce_pipe->ab, ce_pipe->pipe_num);
419 }
420 
421 static irqreturn_t ath11k_ahb_ce_interrupt_handler(int irq, void *arg)
422 {
423 	struct ath11k_ce_pipe *ce_pipe = arg;
424 
425 	/* last interrupt received for this CE */
426 	ce_pipe->timestamp = jiffies;
427 
428 	ath11k_ahb_ce_irq_disable(ce_pipe->ab, ce_pipe->pipe_num);
429 
430 	tasklet_schedule(&ce_pipe->intr_tq);
431 
432 	return IRQ_HANDLED;
433 }
434 
435 static int ath11k_ahb_ext_grp_napi_poll(struct napi_struct *napi, int budget)
436 {
437 	struct ath11k_ext_irq_grp *irq_grp = container_of(napi,
438 						struct ath11k_ext_irq_grp,
439 						napi);
440 	struct ath11k_base *ab = irq_grp->ab;
441 	int work_done;
442 
443 	work_done = ath11k_dp_service_srng(ab, irq_grp, budget);
444 	if (work_done < budget) {
445 		napi_complete_done(napi, work_done);
446 		ath11k_ahb_ext_grp_enable(irq_grp);
447 	}
448 
449 	if (work_done > budget)
450 		work_done = budget;
451 
452 	return work_done;
453 }
454 
455 static irqreturn_t ath11k_ahb_ext_interrupt_handler(int irq, void *arg)
456 {
457 	struct ath11k_ext_irq_grp *irq_grp = arg;
458 
459 	/* last interrupt received for this group */
460 	irq_grp->timestamp = jiffies;
461 
462 	ath11k_ahb_ext_grp_disable(irq_grp);
463 
464 	napi_schedule(&irq_grp->napi);
465 
466 	return IRQ_HANDLED;
467 }
468 
469 static int ath11k_ahb_ext_irq_config(struct ath11k_base *ab)
470 {
471 	struct ath11k_hw_params *hw = &ab->hw_params;
472 	int i, j;
473 	int irq;
474 	int ret;
475 
476 	for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
477 		struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
478 		u32 num_irq = 0;
479 
480 		irq_grp->ab = ab;
481 		irq_grp->grp_id = i;
482 		init_dummy_netdev(&irq_grp->napi_ndev);
483 		netif_napi_add(&irq_grp->napi_ndev, &irq_grp->napi,
484 			       ath11k_ahb_ext_grp_napi_poll);
485 
486 		for (j = 0; j < ATH11K_EXT_IRQ_NUM_MAX; j++) {
487 			if (ab->hw_params.ring_mask->tx[i] & BIT(j)) {
488 				irq_grp->irqs[num_irq++] =
489 					wbm2host_tx_completions_ring1 - j;
490 			}
491 
492 			if (ab->hw_params.ring_mask->rx[i] & BIT(j)) {
493 				irq_grp->irqs[num_irq++] =
494 					reo2host_destination_ring1 - j;
495 			}
496 
497 			if (ab->hw_params.ring_mask->rx_err[i] & BIT(j))
498 				irq_grp->irqs[num_irq++] = reo2host_exception;
499 
500 			if (ab->hw_params.ring_mask->rx_wbm_rel[i] & BIT(j))
501 				irq_grp->irqs[num_irq++] = wbm2host_rx_release;
502 
503 			if (ab->hw_params.ring_mask->reo_status[i] & BIT(j))
504 				irq_grp->irqs[num_irq++] = reo2host_status;
505 
506 			if (j < ab->hw_params.max_radios) {
507 				if (ab->hw_params.ring_mask->rxdma2host[i] & BIT(j)) {
508 					irq_grp->irqs[num_irq++] =
509 						rxdma2host_destination_ring_mac1 -
510 						ath11k_hw_get_mac_from_pdev_id(hw, j);
511 				}
512 
513 				if (ab->hw_params.ring_mask->host2rxdma[i] & BIT(j)) {
514 					irq_grp->irqs[num_irq++] =
515 						host2rxdma_host_buf_ring_mac1 -
516 						ath11k_hw_get_mac_from_pdev_id(hw, j);
517 				}
518 
519 				if (ab->hw_params.ring_mask->rx_mon_status[i] & BIT(j)) {
520 					irq_grp->irqs[num_irq++] =
521 						ppdu_end_interrupts_mac1 -
522 						ath11k_hw_get_mac_from_pdev_id(hw, j);
523 					irq_grp->irqs[num_irq++] =
524 						rxdma2host_monitor_status_ring_mac1 -
525 						ath11k_hw_get_mac_from_pdev_id(hw, j);
526 				}
527 			}
528 		}
529 		irq_grp->num_irq = num_irq;
530 
531 		for (j = 0; j < irq_grp->num_irq; j++) {
532 			int irq_idx = irq_grp->irqs[j];
533 
534 			irq = platform_get_irq_byname(ab->pdev,
535 						      irq_name[irq_idx]);
536 			ab->irq_num[irq_idx] = irq;
537 			irq_set_status_flags(irq, IRQ_NOAUTOEN | IRQ_DISABLE_UNLAZY);
538 			ret = request_irq(irq, ath11k_ahb_ext_interrupt_handler,
539 					  IRQF_TRIGGER_RISING,
540 					  irq_name[irq_idx], irq_grp);
541 			if (ret) {
542 				ath11k_err(ab, "failed request_irq for %d\n",
543 					   irq);
544 			}
545 		}
546 	}
547 
548 	return 0;
549 }
550 
551 static int ath11k_ahb_config_irq(struct ath11k_base *ab)
552 {
553 	int irq, irq_idx, i;
554 	int ret;
555 
556 	/* Configure CE irqs */
557 	for (i = 0; i < ab->hw_params.ce_count; i++) {
558 		struct ath11k_ce_pipe *ce_pipe = &ab->ce.ce_pipe[i];
559 
560 		if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
561 			continue;
562 
563 		irq_idx = ATH11K_IRQ_CE0_OFFSET + i;
564 
565 		tasklet_setup(&ce_pipe->intr_tq, ath11k_ahb_ce_tasklet);
566 		irq = platform_get_irq_byname(ab->pdev, irq_name[irq_idx]);
567 		ret = request_irq(irq, ath11k_ahb_ce_interrupt_handler,
568 				  IRQF_TRIGGER_RISING, irq_name[irq_idx],
569 				  ce_pipe);
570 		if (ret)
571 			return ret;
572 
573 		ab->irq_num[irq_idx] = irq;
574 	}
575 
576 	/* Configure external interrupts */
577 	ret = ath11k_ahb_ext_irq_config(ab);
578 
579 	return ret;
580 }
581 
582 static int ath11k_ahb_map_service_to_pipe(struct ath11k_base *ab, u16 service_id,
583 					  u8 *ul_pipe, u8 *dl_pipe)
584 {
585 	const struct service_to_pipe *entry;
586 	bool ul_set = false, dl_set = false;
587 	int i;
588 
589 	for (i = 0; i < ab->hw_params.svc_to_ce_map_len; i++) {
590 		entry = &ab->hw_params.svc_to_ce_map[i];
591 
592 		if (__le32_to_cpu(entry->service_id) != service_id)
593 			continue;
594 
595 		switch (__le32_to_cpu(entry->pipedir)) {
596 		case PIPEDIR_NONE:
597 			break;
598 		case PIPEDIR_IN:
599 			WARN_ON(dl_set);
600 			*dl_pipe = __le32_to_cpu(entry->pipenum);
601 			dl_set = true;
602 			break;
603 		case PIPEDIR_OUT:
604 			WARN_ON(ul_set);
605 			*ul_pipe = __le32_to_cpu(entry->pipenum);
606 			ul_set = true;
607 			break;
608 		case PIPEDIR_INOUT:
609 			WARN_ON(dl_set);
610 			WARN_ON(ul_set);
611 			*dl_pipe = __le32_to_cpu(entry->pipenum);
612 			*ul_pipe = __le32_to_cpu(entry->pipenum);
613 			dl_set = true;
614 			ul_set = true;
615 			break;
616 		}
617 	}
618 
619 	if (WARN_ON(!ul_set || !dl_set))
620 		return -ENOENT;
621 
622 	return 0;
623 }
624 
625 static const struct ath11k_hif_ops ath11k_ahb_hif_ops = {
626 	.start = ath11k_ahb_start,
627 	.stop = ath11k_ahb_stop,
628 	.read32 = ath11k_ahb_read32,
629 	.write32 = ath11k_ahb_write32,
630 	.irq_enable = ath11k_ahb_ext_irq_enable,
631 	.irq_disable = ath11k_ahb_ext_irq_disable,
632 	.map_service_to_pipe = ath11k_ahb_map_service_to_pipe,
633 	.power_down = ath11k_ahb_power_down,
634 	.power_up = ath11k_ahb_power_up,
635 };
636 
637 static int ath11k_core_get_rproc(struct ath11k_base *ab)
638 {
639 	struct ath11k_ahb *ab_ahb = ath11k_ahb_priv(ab);
640 	struct device *dev = ab->dev;
641 	struct rproc *prproc;
642 	phandle rproc_phandle;
643 
644 	if (of_property_read_u32(dev->of_node, "qcom,rproc", &rproc_phandle)) {
645 		ath11k_err(ab, "failed to get q6_rproc handle\n");
646 		return -ENOENT;
647 	}
648 
649 	prproc = rproc_get_by_phandle(rproc_phandle);
650 	if (!prproc) {
651 		ath11k_err(ab, "failed to get rproc\n");
652 		return -EINVAL;
653 	}
654 	ab_ahb->tgt_rproc = prproc;
655 
656 	return 0;
657 }
658 
659 static int ath11k_ahb_probe(struct platform_device *pdev)
660 {
661 	struct ath11k_base *ab;
662 	const struct of_device_id *of_id;
663 	struct resource *mem_res;
664 	void __iomem *mem;
665 	int ret;
666 
667 	of_id = of_match_device(ath11k_ahb_of_match, &pdev->dev);
668 	if (!of_id) {
669 		dev_err(&pdev->dev, "failed to find matching device tree id\n");
670 		return -EINVAL;
671 	}
672 
673 	mem = devm_platform_get_and_ioremap_resource(pdev, 0, &mem_res);
674 	if (IS_ERR(mem)) {
675 		dev_err(&pdev->dev, "ioremap error\n");
676 		return PTR_ERR(mem);
677 	}
678 
679 	ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
680 	if (ret) {
681 		dev_err(&pdev->dev, "failed to set 32-bit consistent dma\n");
682 		return ret;
683 	}
684 
685 	ab = ath11k_core_alloc(&pdev->dev, sizeof(struct ath11k_ahb),
686 			       ATH11K_BUS_AHB,
687 			       &ath11k_ahb_bus_params);
688 	if (!ab) {
689 		dev_err(&pdev->dev, "failed to allocate ath11k base\n");
690 		return -ENOMEM;
691 	}
692 
693 	ab->hif.ops = &ath11k_ahb_hif_ops;
694 	ab->pdev = pdev;
695 	ab->hw_rev = (enum ath11k_hw_rev)of_id->data;
696 	ab->mem = mem;
697 	ab->mem_len = resource_size(mem_res);
698 	platform_set_drvdata(pdev, ab);
699 
700 	ret = ath11k_core_pre_init(ab);
701 	if (ret)
702 		goto err_core_free;
703 
704 	ret = ath11k_hal_srng_init(ab);
705 	if (ret)
706 		goto err_core_free;
707 
708 	ret = ath11k_ce_alloc_pipes(ab);
709 	if (ret) {
710 		ath11k_err(ab, "failed to allocate ce pipes: %d\n", ret);
711 		goto err_hal_srng_deinit;
712 	}
713 
714 	ath11k_ahb_init_qmi_ce_config(ab);
715 
716 	ret = ath11k_core_get_rproc(ab);
717 	if (ret) {
718 		ath11k_err(ab, "failed to get rproc: %d\n", ret);
719 		goto err_ce_free;
720 	}
721 
722 	ret = ath11k_core_init(ab);
723 	if (ret) {
724 		ath11k_err(ab, "failed to init core: %d\n", ret);
725 		goto err_ce_free;
726 	}
727 
728 	ret = ath11k_ahb_config_irq(ab);
729 	if (ret) {
730 		ath11k_err(ab, "failed to configure irq: %d\n", ret);
731 		goto err_ce_free;
732 	}
733 
734 	ath11k_ahb_fwreset_from_cold_boot(ab);
735 
736 	return 0;
737 
738 err_ce_free:
739 	ath11k_ce_free_pipes(ab);
740 
741 err_hal_srng_deinit:
742 	ath11k_hal_srng_deinit(ab);
743 
744 err_core_free:
745 	ath11k_core_free(ab);
746 	platform_set_drvdata(pdev, NULL);
747 
748 	return ret;
749 }
750 
751 static int ath11k_ahb_remove(struct platform_device *pdev)
752 {
753 	struct ath11k_base *ab = platform_get_drvdata(pdev);
754 	unsigned long left;
755 
756 	if (test_bit(ATH11K_FLAG_QMI_FAIL, &ab->dev_flags)) {
757 		ath11k_ahb_power_down(ab);
758 		ath11k_debugfs_soc_destroy(ab);
759 		ath11k_qmi_deinit_service(ab);
760 		goto qmi_fail;
761 	}
762 
763 	reinit_completion(&ab->driver_recovery);
764 
765 	if (test_bit(ATH11K_FLAG_RECOVERY, &ab->dev_flags)) {
766 		left = wait_for_completion_timeout(&ab->driver_recovery,
767 						   ATH11K_AHB_RECOVERY_TIMEOUT);
768 		if (!left)
769 			ath11k_warn(ab, "failed to receive recovery response completion\n");
770 	}
771 
772 	set_bit(ATH11K_FLAG_UNREGISTERING, &ab->dev_flags);
773 	cancel_work_sync(&ab->restart_work);
774 
775 	ath11k_core_deinit(ab);
776 qmi_fail:
777 	ath11k_ahb_free_irq(ab);
778 	ath11k_hal_srng_deinit(ab);
779 	ath11k_ce_free_pipes(ab);
780 	ath11k_core_free(ab);
781 	platform_set_drvdata(pdev, NULL);
782 
783 	return 0;
784 }
785 
786 static struct platform_driver ath11k_ahb_driver = {
787 	.driver         = {
788 		.name   = "ath11k",
789 		.of_match_table = ath11k_ahb_of_match,
790 	},
791 	.probe  = ath11k_ahb_probe,
792 	.remove = ath11k_ahb_remove,
793 };
794 
795 static int ath11k_ahb_init(void)
796 {
797 	return platform_driver_register(&ath11k_ahb_driver);
798 }
799 module_init(ath11k_ahb_init);
800 
801 static void ath11k_ahb_exit(void)
802 {
803 	platform_driver_unregister(&ath11k_ahb_driver);
804 }
805 module_exit(ath11k_ahb_exit);
806 
807 MODULE_DESCRIPTION("Driver support for Qualcomm Technologies 802.11ax WLAN AHB devices");
808 MODULE_LICENSE("Dual BSD/GPL");
809