21 static int wil_is_pmc_allocated(struct pmc_ctx *pmc)  in wil_is_pmc_allocated()  argument
23 	return !!pmc->pring_va;  in wil_is_pmc_allocated()
28 	memset(&wil->pmc, 0, sizeof(struct pmc_ctx));  in wil_pmc_init()
29 	mutex_init(&wil->pmc.lock);  in wil_pmc_init()
44 	struct pmc_ctx *pmc = &wil->pmc;  in wil_pmc_alloc()  local
50 	mutex_lock(&pmc->lock);  in wil_pmc_alloc()
52 	if (wil_is_pmc_allocated(pmc)) {  in wil_pmc_alloc()
81 	pmc->num_descriptors = num_descriptors;  in wil_pmc_alloc()
82 	pmc->descriptor_size = descriptor_size;  in wil_pmc_alloc()
88 	pmc->descriptors = kcalloc(num_descriptors,  in wil_pmc_alloc()
91 	if (!pmc->descriptors) {  in wil_pmc_alloc()
97 		     pmc->descriptors);  in wil_pmc_alloc()
115 	pmc->pring_va = dma_alloc_coherent(dev,  in wil_pmc_alloc()
117 			&pmc->pring_pa,  in wil_pmc_alloc()
126 		     pmc->pring_va, &pmc->pring_pa,  in wil_pmc_alloc()
131 	if (!pmc->pring_va) {  in wil_pmc_alloc()
141 		struct vring_tx_desc *_d = &pmc->pring_va[i];  in wil_pmc_alloc()
145 		pmc->descriptors[i].va = dma_alloc_coherent(dev,  in wil_pmc_alloc()
147 			&pmc->descriptors[i].pa,  in wil_pmc_alloc()
150 		if (unlikely(!pmc->descriptors[i].va)) {  in wil_pmc_alloc()
156 			u32 *p = (u32 *)pmc->descriptors[i].va + j;  in wil_pmc_alloc()
162 			cpu_to_le32(lower_32_bits(pmc->descriptors[i].pa));  in wil_pmc_alloc()
164 			cpu_to_le16((u16)upper_32_bits(pmc->descriptors[i].pa));  in wil_pmc_alloc()
174 	pmc_cmd.ring_size = cpu_to_le16(pmc->num_descriptors);  in wil_pmc_alloc()
175 	pmc_cmd.mem_base = cpu_to_le64(pmc->pring_pa);  in wil_pmc_alloc()
178 	pmc->last_cmd_status = wmi_send(wil,  in wil_pmc_alloc()
183 	if (pmc->last_cmd_status) {  in wil_pmc_alloc()
186 			pmc->last_cmd_status);  in wil_pmc_alloc()
190 	mutex_unlock(&pmc->lock);  in wil_pmc_alloc()
196 	for (i = 0; i < num_descriptors && pmc->descriptors[i].va; i++) {  in wil_pmc_alloc()
199 				  pmc->descriptors[i].va,  in wil_pmc_alloc()
200 				  pmc->descriptors[i].pa);  in wil_pmc_alloc()
202 		pmc->descriptors[i].va = NULL;  in wil_pmc_alloc()
208 			  pmc->pring_va,  in wil_pmc_alloc()
209 			  pmc->pring_pa);  in wil_pmc_alloc()
211 	pmc->pring_va = NULL;  in wil_pmc_alloc()
215 	kfree(pmc->descriptors);  in wil_pmc_alloc()
216 	pmc->descriptors = NULL;  in wil_pmc_alloc()
219 	pmc->last_cmd_status = last_cmd_err;  in wil_pmc_alloc()
220 	mutex_unlock(&pmc->lock);  in wil_pmc_alloc()
228 	struct pmc_ctx *pmc = &wil->pmc;  in wil_pmc_free()  local
233 	mutex_lock(&pmc->lock);  in wil_pmc_free()
235 	pmc->last_cmd_status = 0;  in wil_pmc_free()
237 	if (!wil_is_pmc_allocated(pmc)) {  in wil_pmc_free()
240 		pmc->last_cmd_status = -EPERM;  in wil_pmc_free()
241 		mutex_unlock(&pmc->lock);  in wil_pmc_free()
248 		pmc->last_cmd_status =  in wil_pmc_free()
251 		if (pmc->last_cmd_status) {  in wil_pmc_free()
254 				pmc->last_cmd_status);  in wil_pmc_free()
262 	if (pmc->pring_va) {  in wil_pmc_free()
264 				  pmc->num_descriptors;  in wil_pmc_free()
267 			     pmc->pring_va);  in wil_pmc_free()
268 		dma_free_coherent(dev, buf_size, pmc->pring_va, pmc->pring_pa);  in wil_pmc_free()
270 		pmc->pring_va = NULL;  in wil_pmc_free()
272 		pmc->last_cmd_status = -ENOENT;  in wil_pmc_free()
275 	if (pmc->descriptors) {  in wil_pmc_free()
279 		     i < pmc->num_descriptors && pmc->descriptors[i].va; i++) {  in wil_pmc_free()
281 					  pmc->descriptor_size,  in wil_pmc_free()
282 					  pmc->descriptors[i].va,  in wil_pmc_free()
283 					  pmc->descriptors[i].pa);  in wil_pmc_free()
284 			pmc->descriptors[i].va = NULL;  in wil_pmc_free()
287 			     pmc->num_descriptors);  in wil_pmc_free()
290 			     pmc->descriptors);  in wil_pmc_free()
291 		kfree(pmc->descriptors);  in wil_pmc_free()
292 		pmc->descriptors = NULL;  in wil_pmc_free()
294 		pmc->last_cmd_status = -ENOENT;  in wil_pmc_free()
297 	mutex_unlock(&pmc->lock);  in wil_pmc_free()
306 		     wil->pmc.last_cmd_status);  in wil_pmc_last_cmd_status()
308 	return wil->pmc.last_cmd_status;  in wil_pmc_last_cmd_status()
318 	struct pmc_ctx *pmc = &wil->pmc;  in wil_pmc_read()  local
324 	mutex_lock(&pmc->lock);  in wil_pmc_read()
326 	if (!wil_is_pmc_allocated(pmc)) {  in wil_pmc_read()
328 		pmc->last_cmd_status = -EPERM;  in wil_pmc_read()
329 		mutex_unlock(&pmc->lock);  in wil_pmc_read()
333 	pmc_size = pmc->descriptor_size * pmc->num_descriptors;  in wil_pmc_read()
339 	pmc->last_cmd_status = 0;  in wil_pmc_read()
342 	do_div(idx, pmc->descriptor_size);  in wil_pmc_read()
343 	offset = *f_pos - (idx * pmc->descriptor_size);  in wil_pmc_read()
349 		pmc->last_cmd_status = -ERANGE;  in wil_pmc_read()
361 					 pmc->descriptors[idx].va,  in wil_pmc_read()
362 					 pmc->descriptor_size);  in wil_pmc_read()
365 	mutex_unlock(&pmc->lock);  in wil_pmc_read()
374 	struct pmc_ctx *pmc = &wil->pmc;  in wil_pmc_llseek()  local
377 	mutex_lock(&pmc->lock);  in wil_pmc_llseek()
379 	if (!wil_is_pmc_allocated(pmc)) {  in wil_pmc_llseek()
381 		pmc->last_cmd_status = -EPERM;  in wil_pmc_llseek()
382 		mutex_unlock(&pmc->lock);  in wil_pmc_llseek()
386 	pmc_size = pmc->descriptor_size * pmc->num_descriptors;  in wil_pmc_llseek()
416 	mutex_unlock(&pmc->lock);  in wil_pmc_llseek()
424 	struct pmc_ctx *pmc = &wil->pmc;  in wil_pmcring_read()  local
426 		sizeof(struct vring_rx_desc) * pmc->num_descriptors;  in wil_pmcring_read()
428 	mutex_lock(&pmc->lock);  in wil_pmcring_read()
430 	if (!wil_is_pmc_allocated(pmc)) {  in wil_pmcring_read()
432 		pmc->last_cmd_status = -EPERM;  in wil_pmcring_read()
433 		mutex_unlock(&pmc->lock);  in wil_pmcring_read()
439 	seq_write(s, pmc->pring_va, pmc_ring_size);  in wil_pmcring_read()
441 	mutex_unlock(&pmc->lock);  in wil_pmcring_read()