1 // SPDX-License-Identifier: GPL-2.0-only
23 #define NVBIN_FILE		"wlan/prima/WCNSS_qcom_wlan_nv.bin"
26  * struct wcnss_ctrl - driver context
63  * struct wcnss_msg_hdr - common packet header for requests and responses
73  * struct wcnss_version_resp - version request response
84  * struct wcnss_download_nv_req - firmware fragment request
100  * struct wcnss_download_nv_resp - firmware download response
110  * wcnss_ctrl_smd_callback() - handler from SMD responses
125 	struct wcnss_ctrl *wcnss = dev_get_drvdata(&rpdev->dev);  in wcnss_ctrl_smd_callback()  local
130 	switch (hdr->type) {  in wcnss_ctrl_smd_callback()
133 			dev_err(wcnss->dev,  in wcnss_ctrl_smd_callback()
139 		dev_info(wcnss->dev, "WCNSS Version %d.%d %d.%d\n",  in wcnss_ctrl_smd_callback()
140 			 version->major, version->minor,  in wcnss_ctrl_smd_callback()
141 			 version->version, version->revision);  in wcnss_ctrl_smd_callback()
143 		complete(&wcnss->ack);  in wcnss_ctrl_smd_callback()
147 			dev_err(wcnss->dev,  in wcnss_ctrl_smd_callback()
153 		wcnss->ack_status = nvresp->status;  in wcnss_ctrl_smd_callback()
154 		complete(&wcnss->ack);  in wcnss_ctrl_smd_callback()
157 		dev_dbg(wcnss->dev, "cold boot complete\n");  in wcnss_ctrl_smd_callback()
158 		complete(&wcnss->cbc);  in wcnss_ctrl_smd_callback()
161 		dev_info(wcnss->dev, "unknown message type %d\n", hdr->type);  in wcnss_ctrl_smd_callback()
169  * wcnss_request_version() - send a version request to WCNSS
170  * @wcnss:	wcnss ctrl driver context
172 static int wcnss_request_version(struct wcnss_ctrl *wcnss)  in wcnss_request_version()  argument
179 	ret = rpmsg_send(wcnss->channel, &msg, sizeof(msg));  in wcnss_request_version()
183 	ret = wait_for_completion_timeout(&wcnss->ack, WCNSS_CBC_TIMEOUT);  in wcnss_request_version()
185 		dev_err(wcnss->dev, "timeout waiting for version response\n");  in wcnss_request_version()
186 		return -ETIMEDOUT;  in wcnss_request_version()
193  * wcnss_download_nv() - send nv binary to WCNSS
194  * @wcnss:	wcnss_ctrl state handle
199 static int wcnss_download_nv(struct wcnss_ctrl *wcnss, bool *expect_cbc)  in wcnss_download_nv()  argument
203 	struct device *dev = wcnss->dev;  in wcnss_download_nv()
211 		return -ENOMEM;  in wcnss_download_nv()
213 	ret = of_property_read_string(dev->of_node, "firmware-name", &nvbin);  in wcnss_download_nv()
214 	if (ret < 0 && ret != -EINVAL)  in wcnss_download_nv()
223 	data = fw->data;  in wcnss_download_nv()
224 	left = fw->size;  in wcnss_download_nv()
226 	req->hdr.type = WCNSS_DOWNLOAD_NV_REQ;  in wcnss_download_nv()
227 	req->hdr.len = sizeof(*req) + NV_FRAGMENT_SIZE;  in wcnss_download_nv()
229 	req->last = 0;  in wcnss_download_nv()
230 	req->frag_size = NV_FRAGMENT_SIZE;  in wcnss_download_nv()
232 	req->seq = 0;  in wcnss_download_nv()
235 			req->last = 1;  in wcnss_download_nv()
236 			req->frag_size = left;  in wcnss_download_nv()
237 			req->hdr.len = sizeof(*req) + left;  in wcnss_download_nv()
240 		memcpy(req->fragment, data, req->frag_size);  in wcnss_download_nv()
242 		ret = rpmsg_send(wcnss->channel, req, req->hdr.len);  in wcnss_download_nv()
249 		req->seq++;  in wcnss_download_nv()
252 		left -= NV_FRAGMENT_SIZE;  in wcnss_download_nv()
255 	ret = wait_for_completion_timeout(&wcnss->ack, WCNSS_REQUEST_TIMEOUT);  in wcnss_download_nv()
258 		ret = -ETIMEDOUT;  in wcnss_download_nv()
260 		*expect_cbc = wcnss->ack_status == WCNSS_ACK_COLD_BOOTING;  in wcnss_download_nv()
273  * qcom_wcnss_open_channel() - open additional SMD channel to WCNSS
274  * @wcnss:	wcnss handle, retrieved from drvdata
277  * @priv:	private data for use in the call-back
279 struct rpmsg_endpoint *qcom_wcnss_open_channel(void *wcnss, const char *name, rpmsg_rx_cb_t cb, voi…  in qcom_wcnss_open_channel()  argument
282 	struct wcnss_ctrl *_wcnss = wcnss;  in qcom_wcnss_open_channel()
288 	return rpmsg_create_ept(_wcnss->channel->rpdev, cb, priv, chinfo);  in qcom_wcnss_open_channel()
294 	struct wcnss_ctrl *wcnss = container_of(work, struct wcnss_ctrl, probe_work);  in wcnss_async_probe()  local
298 	ret = wcnss_request_version(wcnss);  in wcnss_async_probe()
302 	ret = wcnss_download_nv(wcnss, &expect_cbc);  in wcnss_async_probe()
308 		ret = wait_for_completion_timeout(&wcnss->cbc, WCNSS_REQUEST_TIMEOUT);  in wcnss_async_probe()
310 			dev_err(wcnss->dev, "expected cold boot completion\n");  in wcnss_async_probe()
313 	of_platform_populate(wcnss->dev->of_node, NULL, NULL, wcnss->dev);  in wcnss_async_probe()
318 	struct wcnss_ctrl *wcnss;  in wcnss_ctrl_probe()  local
320 	wcnss = devm_kzalloc(&rpdev->dev, sizeof(*wcnss), GFP_KERNEL);  in wcnss_ctrl_probe()
321 	if (!wcnss)  in wcnss_ctrl_probe()
322 		return -ENOMEM;  in wcnss_ctrl_probe()
324 	wcnss->dev = &rpdev->dev;  in wcnss_ctrl_probe()
325 	wcnss->channel = rpdev->ept;  in wcnss_ctrl_probe()
327 	init_completion(&wcnss->ack);  in wcnss_ctrl_probe()
328 	init_completion(&wcnss->cbc);  in wcnss_ctrl_probe()
329 	INIT_WORK(&wcnss->probe_work, wcnss_async_probe);  in wcnss_ctrl_probe()
331 	dev_set_drvdata(&rpdev->dev, wcnss);  in wcnss_ctrl_probe()
333 	schedule_work(&wcnss->probe_work);  in wcnss_ctrl_probe()
340 	struct wcnss_ctrl *wcnss = dev_get_drvdata(&rpdev->dev);  in wcnss_ctrl_remove()  local
342 	cancel_work_sync(&wcnss->probe_work);  in wcnss_ctrl_remove()
343 	of_platform_depopulate(&rpdev->dev);  in wcnss_ctrl_remove()
347 	{ .compatible = "qcom,wcnss", },
364 MODULE_DESCRIPTION("Qualcomm WCNSS control driver");