Lines Matching full:ipc
2 * Intel SST generic IPC Support
33 #include "sst-ipc.h"
35 /* IPC message timeout (msecs) */
41 static struct ipc_message *msg_get_empty(struct sst_generic_ipc *ipc) in msg_get_empty() argument
45 if (!list_empty(&ipc->empty_list)) { in msg_get_empty()
46 msg = list_first_entry(&ipc->empty_list, struct ipc_message, in msg_get_empty()
54 static int tx_wait_done(struct sst_generic_ipc *ipc, in tx_wait_done() argument
64 spin_lock_irqsave(&ipc->dsp->spinlock, flags); in tx_wait_done()
66 if (ipc->ops.shim_dbg != NULL) in tx_wait_done()
67 ipc->ops.shim_dbg(ipc, "message timeout"); in tx_wait_done()
79 list_add_tail(&msg->list, &ipc->empty_list); in tx_wait_done()
80 spin_unlock_irqrestore(&ipc->dsp->spinlock, flags); in tx_wait_done()
84 static int ipc_tx_message(struct sst_generic_ipc *ipc, u64 header, in ipc_tx_message() argument
91 spin_lock_irqsave(&ipc->dsp->spinlock, flags); in ipc_tx_message()
93 msg = msg_get_empty(ipc); in ipc_tx_message()
95 spin_unlock_irqrestore(&ipc->dsp->spinlock, flags); in ipc_tx_message()
107 if ((tx_bytes) && (ipc->ops.tx_data_copy != NULL)) in ipc_tx_message()
108 ipc->ops.tx_data_copy(msg, tx_data, tx_bytes); in ipc_tx_message()
110 list_add_tail(&msg->list, &ipc->tx_list); in ipc_tx_message()
111 schedule_work(&ipc->kwork); in ipc_tx_message()
112 spin_unlock_irqrestore(&ipc->dsp->spinlock, flags); in ipc_tx_message()
115 return tx_wait_done(ipc, msg, rx_data); in ipc_tx_message()
120 static int msg_empty_list_init(struct sst_generic_ipc *ipc) in msg_empty_list_init() argument
124 ipc->msg = kcalloc(IPC_EMPTY_LIST_SIZE, sizeof(struct ipc_message), in msg_empty_list_init()
126 if (ipc->msg == NULL) in msg_empty_list_init()
130 ipc->msg[i].tx_data = kzalloc(ipc->tx_data_max_size, GFP_KERNEL); in msg_empty_list_init()
131 if (ipc->msg[i].tx_data == NULL) in msg_empty_list_init()
134 ipc->msg[i].rx_data = kzalloc(ipc->rx_data_max_size, GFP_KERNEL); in msg_empty_list_init()
135 if (ipc->msg[i].rx_data == NULL) { in msg_empty_list_init()
136 kfree(ipc->msg[i].tx_data); in msg_empty_list_init()
140 init_waitqueue_head(&ipc->msg[i].waitq); in msg_empty_list_init()
141 list_add(&ipc->msg[i].list, &ipc->empty_list); in msg_empty_list_init()
148 kfree(ipc->msg[i-1].tx_data); in msg_empty_list_init()
149 kfree(ipc->msg[i-1].rx_data); in msg_empty_list_init()
152 kfree(ipc->msg); in msg_empty_list_init()
159 struct sst_generic_ipc *ipc = in ipc_tx_msgs() local
163 spin_lock_irq(&ipc->dsp->spinlock); in ipc_tx_msgs()
165 while (!list_empty(&ipc->tx_list) && !ipc->pending) { in ipc_tx_msgs()
170 if (ipc->ops.is_dsp_busy && ipc->ops.is_dsp_busy(ipc->dsp)) { in ipc_tx_msgs()
171 dev_dbg(ipc->dev, "ipc_tx_msgs dsp busy\n"); in ipc_tx_msgs()
175 msg = list_first_entry(&ipc->tx_list, struct ipc_message, list); in ipc_tx_msgs()
176 list_move(&msg->list, &ipc->rx_list); in ipc_tx_msgs()
178 if (ipc->ops.tx_msg != NULL) in ipc_tx_msgs()
179 ipc->ops.tx_msg(ipc, msg); in ipc_tx_msgs()
182 spin_unlock_irq(&ipc->dsp->spinlock); in ipc_tx_msgs()
185 int sst_ipc_tx_message_wait(struct sst_generic_ipc *ipc, u64 header, in sst_ipc_tx_message_wait() argument
193 * if so invoke that before sending IPC in sst_ipc_tx_message_wait()
195 if (ipc->ops.check_dsp_lp_on) in sst_ipc_tx_message_wait()
196 if (ipc->ops.check_dsp_lp_on(ipc->dsp, true)) in sst_ipc_tx_message_wait()
199 ret = ipc_tx_message(ipc, header, tx_data, tx_bytes, in sst_ipc_tx_message_wait()
202 if (ipc->ops.check_dsp_lp_on) in sst_ipc_tx_message_wait()
203 if (ipc->ops.check_dsp_lp_on(ipc->dsp, false)) in sst_ipc_tx_message_wait()
210 int sst_ipc_tx_message_nowait(struct sst_generic_ipc *ipc, u64 header, in sst_ipc_tx_message_nowait() argument
213 return ipc_tx_message(ipc, header, tx_data, tx_bytes, in sst_ipc_tx_message_nowait()
218 int sst_ipc_tx_message_nopm(struct sst_generic_ipc *ipc, u64 header, in sst_ipc_tx_message_nopm() argument
221 return ipc_tx_message(ipc, header, tx_data, tx_bytes, in sst_ipc_tx_message_nopm()
226 struct ipc_message *sst_ipc_reply_find_msg(struct sst_generic_ipc *ipc, in sst_ipc_reply_find_msg() argument
232 if (ipc->ops.reply_msg_match != NULL) in sst_ipc_reply_find_msg()
233 header = ipc->ops.reply_msg_match(header, &mask); in sst_ipc_reply_find_msg()
237 if (list_empty(&ipc->rx_list)) { in sst_ipc_reply_find_msg()
238 dev_err(ipc->dev, "error: rx list empty but received 0x%llx\n", in sst_ipc_reply_find_msg()
243 list_for_each_entry(msg, &ipc->rx_list, list) { in sst_ipc_reply_find_msg()
253 void sst_ipc_tx_msg_reply_complete(struct sst_generic_ipc *ipc, in sst_ipc_tx_msg_reply_complete() argument
259 list_add_tail(&msg->list, &ipc->empty_list); in sst_ipc_tx_msg_reply_complete()
265 void sst_ipc_drop_all(struct sst_generic_ipc *ipc) in sst_ipc_drop_all() argument
272 spin_lock_irqsave(&ipc->dsp->spinlock, flags); in sst_ipc_drop_all()
274 list_for_each_entry_safe(msg, tmp, &ipc->tx_list, list) { in sst_ipc_drop_all()
275 list_move(&msg->list, &ipc->empty_list); in sst_ipc_drop_all()
279 list_for_each_entry_safe(msg, tmp, &ipc->rx_list, list) { in sst_ipc_drop_all()
280 list_move(&msg->list, &ipc->empty_list); in sst_ipc_drop_all()
284 spin_unlock_irqrestore(&ipc->dsp->spinlock, flags); in sst_ipc_drop_all()
287 dev_err(ipc->dev, "dropped IPC msg RX=%d, TX=%d\n", in sst_ipc_drop_all()
292 int sst_ipc_init(struct sst_generic_ipc *ipc) in sst_ipc_init() argument
296 INIT_LIST_HEAD(&ipc->tx_list); in sst_ipc_init()
297 INIT_LIST_HEAD(&ipc->rx_list); in sst_ipc_init()
298 INIT_LIST_HEAD(&ipc->empty_list); in sst_ipc_init()
299 init_waitqueue_head(&ipc->wait_txq); in sst_ipc_init()
301 ret = msg_empty_list_init(ipc); in sst_ipc_init()
305 INIT_WORK(&ipc->kwork, ipc_tx_msgs); in sst_ipc_init()
310 void sst_ipc_fini(struct sst_generic_ipc *ipc) in sst_ipc_fini() argument
314 cancel_work_sync(&ipc->kwork); in sst_ipc_fini()
316 if (ipc->msg) { in sst_ipc_fini()
318 kfree(ipc->msg[i].tx_data); in sst_ipc_fini()
319 kfree(ipc->msg[i].rx_data); in sst_ipc_fini()
321 kfree(ipc->msg); in sst_ipc_fini()
328 MODULE_DESCRIPTION("Intel SST IPC generic");