30 static int wil_is_pmc_allocated(struct pmc_ctx *pmc)  in wil_is_pmc_allocated()  argument
32 	return !!pmc->pring_va;  in wil_is_pmc_allocated()
37 	memset(&wil->pmc, 0, sizeof(struct pmc_ctx));  in wil_pmc_init()
38 	mutex_init(&wil->pmc.lock);  in wil_pmc_init()
54 	struct pmc_ctx *pmc = &wil->pmc;  in wil_pmc_alloc()  local
58 	mutex_lock(&pmc->lock);  in wil_pmc_alloc()
60 	if (wil_is_pmc_allocated(pmc)) {  in wil_pmc_alloc()
66 	pmc->num_descriptors = num_descriptors;  in wil_pmc_alloc()
67 	pmc->descriptor_size = descriptor_size;  in wil_pmc_alloc()
73 	pmc->descriptors = kcalloc(num_descriptors,  in wil_pmc_alloc()
76 	if (!pmc->descriptors) {  in wil_pmc_alloc()
83 		     __func__, pmc->descriptors);  in wil_pmc_alloc()
89 	pmc->pring_va = dma_alloc_coherent(dev,  in wil_pmc_alloc()
91 			&pmc->pring_pa,  in wil_pmc_alloc()
97 		     pmc->pring_va, &pmc->pring_pa,  in wil_pmc_alloc()
102 	if (!pmc->pring_va) {  in wil_pmc_alloc()
112 		struct vring_tx_desc *_d = &pmc->pring_va[i];  in wil_pmc_alloc()
116 		pmc->descriptors[i].va = dma_alloc_coherent(dev,  in wil_pmc_alloc()
118 			&pmc->descriptors[i].pa,  in wil_pmc_alloc()
121 		if (unlikely(!pmc->descriptors[i].va)) {  in wil_pmc_alloc()
129 			u32 *p = (u32 *)pmc->descriptors[i].va + j;  in wil_pmc_alloc()
135 			cpu_to_le32(lower_32_bits(pmc->descriptors[i].pa));  in wil_pmc_alloc()
137 			cpu_to_le16((u16)upper_32_bits(pmc->descriptors[i].pa));  in wil_pmc_alloc()
147 	pmc_cmd.ring_size = cpu_to_le16(pmc->num_descriptors);  in wil_pmc_alloc()
148 	pmc_cmd.mem_base = cpu_to_le64(pmc->pring_pa);  in wil_pmc_alloc()
151 	pmc->last_cmd_status = wmi_send(wil,  in wil_pmc_alloc()
155 	if (pmc->last_cmd_status) {  in wil_pmc_alloc()
158 			__func__, pmc->last_cmd_status);  in wil_pmc_alloc()
162 	mutex_unlock(&pmc->lock);  in wil_pmc_alloc()
168 	for (i = 0; pmc->descriptors[i].va && i < num_descriptors; i++) {  in wil_pmc_alloc()
171 				  pmc->descriptors[i].va,  in wil_pmc_alloc()
172 				  pmc->descriptors[i].pa);  in wil_pmc_alloc()
174 		pmc->descriptors[i].va = NULL;  in wil_pmc_alloc()
180 			  pmc->pring_va,  in wil_pmc_alloc()
181 			  pmc->pring_pa);  in wil_pmc_alloc()
183 	pmc->pring_va = NULL;  in wil_pmc_alloc()
188 	kfree(pmc->descriptors);  in wil_pmc_alloc()
189 	pmc->descriptors = NULL;  in wil_pmc_alloc()
192 	pmc->last_cmd_status = -ENOMEM;  in wil_pmc_alloc()
193 	mutex_unlock(&pmc->lock);  in wil_pmc_alloc()
202 	struct pmc_ctx *pmc = &wil->pmc;  in wil_pmc_free()  local
206 	mutex_lock(&pmc->lock);  in wil_pmc_free()
208 	pmc->last_cmd_status = 0;  in wil_pmc_free()
210 	if (!wil_is_pmc_allocated(pmc)) {  in wil_pmc_free()
213 		pmc->last_cmd_status = -EPERM;  in wil_pmc_free()
214 		mutex_unlock(&pmc->lock);  in wil_pmc_free()
222 		pmc->last_cmd_status =  in wil_pmc_free()
225 		if (pmc->last_cmd_status) {  in wil_pmc_free()
228 				__func__, pmc->last_cmd_status);  in wil_pmc_free()
236 	if (pmc->pring_va) {  in wil_pmc_free()
238 				  pmc->num_descriptors;  in wil_pmc_free()
241 			     __func__, pmc->pring_va);  in wil_pmc_free()
242 		dma_free_coherent(dev, buf_size, pmc->pring_va, pmc->pring_pa);  in wil_pmc_free()
244 		pmc->pring_va = NULL;  in wil_pmc_free()
246 		pmc->last_cmd_status = -ENOENT;  in wil_pmc_free()
249 	if (pmc->descriptors) {  in wil_pmc_free()
253 		     pmc->descriptors[i].va && i < pmc->num_descriptors; i++) {  in wil_pmc_free()
255 					  pmc->descriptor_size,  in wil_pmc_free()
256 					  pmc->descriptors[i].va,  in wil_pmc_free()
257 					  pmc->descriptors[i].pa);  in wil_pmc_free()
258 			pmc->descriptors[i].va = NULL;  in wil_pmc_free()
261 			     __func__, i, pmc->num_descriptors);  in wil_pmc_free()
264 			     __func__, pmc->descriptors);  in wil_pmc_free()
265 		kfree(pmc->descriptors);  in wil_pmc_free()
266 		pmc->descriptors = NULL;  in wil_pmc_free()
268 		pmc->last_cmd_status = -ENOENT;  in wil_pmc_free()
271 	mutex_unlock(&pmc->lock);  in wil_pmc_free()
281 		     wil->pmc.last_cmd_status);  in wil_pmc_last_cmd_status()
283 	return wil->pmc.last_cmd_status;  in wil_pmc_last_cmd_status()
294 	struct pmc_ctx *pmc = &wil->pmc;  in wil_pmc_read()  local
298 	size_t pmc_size = pmc->descriptor_size * pmc->num_descriptors;  in wil_pmc_read()
300 	mutex_lock(&pmc->lock);  in wil_pmc_read()
302 	if (!wil_is_pmc_allocated(pmc)) {  in wil_pmc_read()
304 		pmc->last_cmd_status = -EPERM;  in wil_pmc_read()
305 		mutex_unlock(&pmc->lock);  in wil_pmc_read()
313 	pmc->last_cmd_status = 0;  in wil_pmc_read()
316 	do_div(idx, pmc->descriptor_size);  in wil_pmc_read()
317 	offset = *f_pos - (idx * pmc->descriptor_size);  in wil_pmc_read()
322 		pmc->last_cmd_status = -ERANGE;  in wil_pmc_read()
334 					 pmc->descriptors[idx].va,  in wil_pmc_read()
335 					 pmc->descriptor_size);  in wil_pmc_read()
338 	mutex_unlock(&pmc->lock);  in wil_pmc_read()
347 	struct pmc_ctx *pmc = &wil->pmc;  in wil_pmc_llseek()  local
348 	size_t pmc_size = pmc->descriptor_size * pmc->num_descriptors;  in wil_pmc_llseek()