wwan/iosm/iosm_ipc_protocol.c

12 int ipc_protocol_tq_msg_send(struct iosm_protocol *ipc_protocol,
17 	int index = ipc_protocol_msg_prep(ipc_protocol->imem, msg_type,
24 		ipc_protocol->rsp_ring[index] = response;
25 		ipc_protocol_msg_hp_update(ipc_protocol->imem);
36 	struct iosm_protocol *ipc_protocol = ipc_imem->ipc_protocol;
38 	return ipc_protocol_tq_msg_send(ipc_protocol, send_args->msg_type,
49 	struct iosm_protocol *ipc_protocol = ipc_imem->ipc_protocol;
51 	ipc_protocol->rsp_ring[arg] = NULL;
55 int ipc_protocol_msg_send(struct iosm_protocol *ipc_protocol,
64 	exec_timeout = (ipc_protocol_get_ap_exec_stage(ipc_protocol) ==
83 	index = ipc_task_queue_send_task(ipc_protocol->imem,
88 		dev_err(ipc_protocol->dev, "msg %d failed", prep);
100 		ipc_task_queue_send_task(ipc_protocol->imem,
103 		dev_err(ipc_protocol->dev, "msg timeout");
104 		ipc_uevent_send(ipc_protocol->pcie->dev, UEVENT_MDM_TIMEOUT);
109 			dev_err(ipc_protocol->dev,
119 static int ipc_protocol_msg_send_host_sleep(struct iosm_protocol *ipc_protocol,
127 	return ipc_protocol_msg_send(ipc_protocol, IPC_MSG_PREP_SLEEP,
131 void ipc_protocol_doorbell_trigger(struct iosm_protocol *ipc_protocol,
134 	ipc_pm_signal_hpda_doorbell(&ipc_protocol->pm, identifier, true);
137 bool ipc_protocol_pm_dev_sleep_handle(struct iosm_protocol *ipc_protocol)
139 	u32 ipc_status = ipc_protocol_get_ipc_status(ipc_protocol);
143 		dev_err(ipc_protocol->dev,
154 	requested = ipc_protocol_pm_dev_get_sleep_notification(ipc_protocol);
156 	return ipc_pm_dev_slp_notification(&ipc_protocol->pm, requested);
162 	struct iosm_pm *ipc_pm = &ipc_imem->ipc_protocol->pm;
172 void ipc_protocol_s2idle_sleep(struct iosm_protocol *ipc_protocol, bool sleep)
174 	ipc_pm_set_s2idle_sleep(&ipc_protocol->pm, sleep);
177 bool ipc_protocol_suspend(struct iosm_protocol *ipc_protocol)
179 	if (!ipc_pm_prepare_host_sleep(&ipc_protocol->pm))
182 	ipc_task_queue_send_task(ipc_protocol->imem,
186 	if (!ipc_pm_wait_for_device_active(&ipc_protocol->pm)) {
187 		ipc_uevent_send(ipc_protocol->pcie->dev, UEVENT_MDM_TIMEOUT);
192 	dev_dbg(ipc_protocol->dev, "send TARGET_HOST, ENTER_SLEEP");
193 	if (ipc_protocol_msg_send_host_sleep(ipc_protocol,
196 		ipc_protocol->pm.host_pm_state = IPC_MEM_HOST_PM_ACTIVE;
200 	ipc_protocol->pm.host_pm_state = IPC_MEM_HOST_PM_SLEEP;
206 bool ipc_protocol_resume(struct iosm_protocol *ipc_protocol)
208 	if (!ipc_pm_prepare_host_active(&ipc_protocol->pm))
211 	dev_dbg(ipc_protocol->dev, "send TARGET_HOST, EXIT_SLEEP");
212 	if (ipc_protocol_msg_send_host_sleep(ipc_protocol,
214 		ipc_protocol->pm.host_pm_state = IPC_MEM_HOST_PM_SLEEP;
218 	ipc_protocol->pm.host_pm_state = IPC_MEM_HOST_PM_ACTIVE;
225 	struct iosm_protocol *ipc_protocol =
226 		kzalloc(sizeof(*ipc_protocol), GFP_KERNEL);
230 	if (!ipc_protocol)
233 	ipc_protocol->dev = ipc_imem->dev;
234 	ipc_protocol->pcie = ipc_imem->pcie;
235 	ipc_protocol->imem = ipc_imem;
236 	ipc_protocol->p_ap_shm = NULL;
237 	ipc_protocol->phy_ap_shm = 0;
239 	ipc_protocol->old_msg_tail = 0;
241 	ipc_protocol->p_ap_shm =
242 		dma_alloc_coherent(&ipc_protocol->pcie->pci->dev,
243 				   sizeof(*ipc_protocol->p_ap_shm),
244 				   &ipc_protocol->phy_ap_shm, GFP_KERNEL);
246 	if (!ipc_protocol->p_ap_shm) {
247 		dev_err(ipc_protocol->dev, "pci shm alloc error");
248 		kfree(ipc_protocol);
253 	addr = ipc_protocol->phy_ap_shm;
254 	p_ci = &ipc_protocol->p_ap_shm->ci;
271 	ipc_pm_init(ipc_protocol);
273 	return ipc_protocol;