ASoC: Intel: Use the generic IPC/mailbox APIs in Baytrail
Use the generic IPC/mailbox APIs to replace the original processing code for Baytrail platform. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Acked-by: Jie Yang <yang.jie@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jin Yao
Mark Brown
parent
a33c1ec5cf
commit
48cec59b6f
@ -31,6 +31,7 @@
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#include "sst-baytrail-ipc.h"
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#include "../common/sst-dsp.h"
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#include "../common/sst-dsp-priv.h"
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#include "../common/sst-ipc.h"
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/* IPC message timeout */
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#define IPC_TIMEOUT_MSECS 300
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@ -142,23 +143,6 @@ struct sst_byt_fw_init {
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u8 debug_info;
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} __packed;
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/* driver internal IPC message structure */
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struct ipc_message {
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struct list_head list;
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u64 header;
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/* direction wrt host CPU */
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char tx_data[SST_BYT_IPC_MAX_PAYLOAD_SIZE];
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size_t tx_size;
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char rx_data[SST_BYT_IPC_MAX_PAYLOAD_SIZE];
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size_t rx_size;
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wait_queue_head_t waitq;
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bool complete;
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bool wait;
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int errno;
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};
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struct sst_byt_stream;
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struct sst_byt;
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@ -195,14 +179,7 @@ struct sst_byt {
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struct sst_fw *fw;
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/* IPC messaging */
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struct list_head tx_list;
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struct list_head rx_list;
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struct list_head empty_list;
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wait_queue_head_t wait_txq;
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struct task_struct *tx_thread;
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struct kthread_worker kworker;
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struct kthread_work kwork;
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struct ipc_message *msg;
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struct sst_generic_ipc ipc;
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};
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static inline u64 sst_byt_header(int msg_id, int data, bool large, int str_id)
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@ -246,209 +223,6 @@ static struct sst_byt_stream *sst_byt_get_stream(struct sst_byt *byt,
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return NULL;
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}
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static void sst_byt_ipc_shim_dbg(struct sst_byt *byt, const char *text)
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{
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struct sst_dsp *sst = byt->dsp;
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u64 isr, ipcd, imrx, ipcx;
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ipcx = sst_dsp_shim_read64_unlocked(sst, SST_IPCX);
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isr = sst_dsp_shim_read64_unlocked(sst, SST_ISRX);
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ipcd = sst_dsp_shim_read64_unlocked(sst, SST_IPCD);
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imrx = sst_dsp_shim_read64_unlocked(sst, SST_IMRX);
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dev_err(byt->dev,
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"ipc: --%s-- ipcx 0x%llx isr 0x%llx ipcd 0x%llx imrx 0x%llx\n",
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text, ipcx, isr, ipcd, imrx);
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}
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/* locks held by caller */
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static struct ipc_message *sst_byt_msg_get_empty(struct sst_byt *byt)
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{
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struct ipc_message *msg = NULL;
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if (!list_empty(&byt->empty_list)) {
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msg = list_first_entry(&byt->empty_list,
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struct ipc_message, list);
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list_del(&msg->list);
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}
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return msg;
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}
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static void sst_byt_ipc_tx_msgs(struct kthread_work *work)
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{
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struct sst_byt *byt =
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container_of(work, struct sst_byt, kwork);
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struct ipc_message *msg;
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u64 ipcx;
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unsigned long flags;
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spin_lock_irqsave(&byt->dsp->spinlock, flags);
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if (list_empty(&byt->tx_list)) {
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spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
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return;
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}
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/* if the DSP is busy we will TX messages after IRQ */
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ipcx = sst_dsp_shim_read64_unlocked(byt->dsp, SST_IPCX);
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if (ipcx & SST_BYT_IPCX_BUSY) {
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spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
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return;
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}
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msg = list_first_entry(&byt->tx_list, struct ipc_message, list);
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list_move(&msg->list, &byt->rx_list);
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/* send the message */
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if (msg->header & IPC_HEADER_LARGE(true))
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sst_dsp_outbox_write(byt->dsp, msg->tx_data, msg->tx_size);
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sst_dsp_shim_write64_unlocked(byt->dsp, SST_IPCX, msg->header);
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spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
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}
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static inline void sst_byt_tx_msg_reply_complete(struct sst_byt *byt,
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struct ipc_message *msg)
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{
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msg->complete = true;
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if (!msg->wait)
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list_add_tail(&msg->list, &byt->empty_list);
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else
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wake_up(&msg->waitq);
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}
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static void sst_byt_drop_all(struct sst_byt *byt)
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{
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struct ipc_message *msg, *tmp;
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unsigned long flags;
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/* drop all TX and Rx messages before we stall + reset DSP */
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spin_lock_irqsave(&byt->dsp->spinlock, flags);
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list_for_each_entry_safe(msg, tmp, &byt->tx_list, list) {
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list_move(&msg->list, &byt->empty_list);
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}
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list_for_each_entry_safe(msg, tmp, &byt->rx_list, list) {
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list_move(&msg->list, &byt->empty_list);
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}
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spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
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}
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static int sst_byt_tx_wait_done(struct sst_byt *byt, struct ipc_message *msg,
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void *rx_data)
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{
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unsigned long flags;
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int ret;
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/* wait for DSP completion */
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ret = wait_event_timeout(msg->waitq, msg->complete,
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msecs_to_jiffies(IPC_TIMEOUT_MSECS));
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spin_lock_irqsave(&byt->dsp->spinlock, flags);
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if (ret == 0) {
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list_del(&msg->list);
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sst_byt_ipc_shim_dbg(byt, "message timeout");
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ret = -ETIMEDOUT;
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} else {
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/* copy the data returned from DSP */
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if (msg->rx_size)
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memcpy(rx_data, msg->rx_data, msg->rx_size);
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ret = msg->errno;
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}
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list_add_tail(&msg->list, &byt->empty_list);
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spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
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return ret;
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}
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static int sst_byt_ipc_tx_message(struct sst_byt *byt, u64 header,
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void *tx_data, size_t tx_bytes,
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void *rx_data, size_t rx_bytes, int wait)
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{
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unsigned long flags;
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struct ipc_message *msg;
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spin_lock_irqsave(&byt->dsp->spinlock, flags);
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msg = sst_byt_msg_get_empty(byt);
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if (msg == NULL) {
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spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
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return -EBUSY;
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}
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msg->header = header;
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msg->tx_size = tx_bytes;
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msg->rx_size = rx_bytes;
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msg->wait = wait;
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msg->errno = 0;
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msg->complete = false;
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if (tx_bytes) {
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/* msg content = lower 32-bit of the header + data */
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*(u32 *)msg->tx_data = (u32)(header & (u32)-1);
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memcpy(msg->tx_data + sizeof(u32), tx_data, tx_bytes);
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msg->tx_size += sizeof(u32);
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}
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list_add_tail(&msg->list, &byt->tx_list);
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spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
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queue_kthread_work(&byt->kworker, &byt->kwork);
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if (wait)
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return sst_byt_tx_wait_done(byt, msg, rx_data);
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else
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return 0;
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}
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static inline int sst_byt_ipc_tx_msg_wait(struct sst_byt *byt, u64 header,
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void *tx_data, size_t tx_bytes,
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void *rx_data, size_t rx_bytes)
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{
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return sst_byt_ipc_tx_message(byt, header, tx_data, tx_bytes,
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rx_data, rx_bytes, 1);
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}
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static inline int sst_byt_ipc_tx_msg_nowait(struct sst_byt *byt, u64 header,
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void *tx_data, size_t tx_bytes)
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{
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return sst_byt_ipc_tx_message(byt, header, tx_data, tx_bytes,
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NULL, 0, 0);
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}
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static struct ipc_message *sst_byt_reply_find_msg(struct sst_byt *byt,
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u64 header)
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{
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struct ipc_message *msg = NULL, *_msg;
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u64 mask;
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/* match reply to message sent based on msg and stream IDs */
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mask = IPC_HEADER_MSG_ID_MASK |
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IPC_HEADER_STR_ID_MASK << IPC_HEADER_STR_ID_SHIFT;
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header &= mask;
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if (list_empty(&byt->rx_list)) {
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dev_err(byt->dev,
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"ipc: rx list is empty but received 0x%llx\n", header);
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goto out;
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}
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list_for_each_entry(_msg, &byt->rx_list, list) {
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if ((_msg->header & mask) == header) {
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msg = _msg;
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break;
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}
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}
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out:
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return msg;
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}
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static void sst_byt_stream_update(struct sst_byt *byt, struct ipc_message *msg)
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{
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struct sst_byt_stream *stream;
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@ -477,7 +251,7 @@ static int sst_byt_process_reply(struct sst_byt *byt, u64 header)
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{
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struct ipc_message *msg;
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msg = sst_byt_reply_find_msg(byt, header);
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msg = sst_ipc_reply_find_msg(&byt->ipc, header);
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if (msg == NULL)
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return 1;
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@ -491,7 +265,7 @@ static int sst_byt_process_reply(struct sst_byt *byt, u64 header)
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list_del(&msg->list);
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/* wake up */
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sst_byt_tx_msg_reply_complete(byt, msg);
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sst_ipc_tx_msg_reply_complete(&byt->ipc, msg);
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return 1;
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}
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@ -538,6 +312,7 @@ static irqreturn_t sst_byt_irq_thread(int irq, void *context)
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{
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struct sst_dsp *sst = (struct sst_dsp *) context;
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struct sst_byt *byt = sst_dsp_get_thread_context(sst);
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struct sst_generic_ipc *ipc = &byt->ipc;
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u64 header;
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unsigned long flags;
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@ -569,7 +344,7 @@ static irqreturn_t sst_byt_irq_thread(int irq, void *context)
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spin_unlock_irqrestore(&sst->spinlock, flags);
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/* continue to send any remaining messages... */
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queue_kthread_work(&byt->kworker, &byt->kwork);
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queue_kthread_work(&ipc->kworker, &ipc->kwork);
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return IRQ_HANDLED;
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}
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@ -656,7 +431,8 @@ int sst_byt_stream_commit(struct sst_byt *byt, struct sst_byt_stream *stream)
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header = sst_byt_header(IPC_IA_ALLOC_STREAM,
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sizeof(*str_req) + sizeof(u32),
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true, stream->str_id);
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ret = sst_byt_ipc_tx_msg_wait(byt, header, str_req, sizeof(*str_req),
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ret = sst_ipc_tx_message_wait(&byt->ipc, header, str_req,
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sizeof(*str_req),
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reply, sizeof(*reply));
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if (ret < 0) {
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dev_err(byt->dev, "ipc: error stream commit failed\n");
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@ -679,7 +455,7 @@ int sst_byt_stream_free(struct sst_byt *byt, struct sst_byt_stream *stream)
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goto out;
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header = sst_byt_header(IPC_IA_FREE_STREAM, 0, false, stream->str_id);
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ret = sst_byt_ipc_tx_msg_wait(byt, header, NULL, 0, NULL, 0);
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ret = sst_ipc_tx_message_wait(&byt->ipc, header, NULL, 0, NULL, 0);
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if (ret < 0) {
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dev_err(byt->dev, "ipc: free stream %d failed\n",
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stream->str_id);
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@ -703,9 +479,11 @@ static int sst_byt_stream_operations(struct sst_byt *byt, int type,
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header = sst_byt_header(type, 0, false, stream_id);
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if (wait)
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return sst_byt_ipc_tx_msg_wait(byt, header, NULL, 0, NULL, 0);
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return sst_ipc_tx_message_wait(&byt->ipc, header, NULL,
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0, NULL, 0);
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else
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return sst_byt_ipc_tx_msg_nowait(byt, header, NULL, 0);
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return sst_ipc_tx_message_nowait(&byt->ipc, header,
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NULL, 0);
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}
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/* stream ALSA trigger operations */
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@ -725,7 +503,7 @@ int sst_byt_stream_start(struct sst_byt *byt, struct sst_byt_stream *stream,
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tx_msg = &start_stream;
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size = sizeof(start_stream);
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ret = sst_byt_ipc_tx_msg_nowait(byt, header, tx_msg, size);
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ret = sst_ipc_tx_message_nowait(&byt->ipc, header, tx_msg, size);
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if (ret < 0)
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dev_err(byt->dev, "ipc: error failed to start stream %d\n",
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stream->str_id);
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@ -790,23 +568,6 @@ int sst_byt_get_dsp_position(struct sst_byt *byt,
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return do_div(fw_tstamp.ring_buffer_counter, buffer_size);
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}
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static int msg_empty_list_init(struct sst_byt *byt)
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{
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struct ipc_message *msg;
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int i;
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byt->msg = kzalloc(sizeof(*msg) * IPC_EMPTY_LIST_SIZE, GFP_KERNEL);
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if (byt->msg == NULL)
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return -ENOMEM;
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for (i = 0; i < IPC_EMPTY_LIST_SIZE; i++) {
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init_waitqueue_head(&byt->msg[i].waitq);
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list_add(&byt->msg[i].list, &byt->empty_list);
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}
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return 0;
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}
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struct sst_dsp *sst_byt_get_dsp(struct sst_byt *byt)
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{
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return byt->dsp;
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@ -823,7 +584,7 @@ int sst_byt_dsp_suspend_late(struct device *dev, struct sst_pdata *pdata)
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dev_dbg(byt->dev, "dsp reset\n");
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sst_dsp_reset(byt->dsp);
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sst_byt_drop_all(byt);
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sst_ipc_drop_all(&byt->ipc);
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dev_dbg(byt->dev, "dsp in reset\n");
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dev_dbg(byt->dev, "free all blocks and unload fw\n");
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@ -876,9 +637,52 @@ int sst_byt_dsp_wait_for_ready(struct device *dev, struct sst_pdata *pdata)
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}
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EXPORT_SYMBOL_GPL(sst_byt_dsp_wait_for_ready);
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static void byt_tx_msg(struct sst_generic_ipc *ipc, struct ipc_message *msg)
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{
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if (msg->header & IPC_HEADER_LARGE(true))
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sst_dsp_outbox_write(ipc->dsp, msg->tx_data, msg->tx_size);
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sst_dsp_shim_write64_unlocked(ipc->dsp, SST_IPCX, msg->header);
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}
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static void byt_shim_dbg(struct sst_generic_ipc *ipc, const char *text)
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{
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struct sst_dsp *sst = ipc->dsp;
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u64 isr, ipcd, imrx, ipcx;
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ipcx = sst_dsp_shim_read64_unlocked(sst, SST_IPCX);
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isr = sst_dsp_shim_read64_unlocked(sst, SST_ISRX);
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ipcd = sst_dsp_shim_read64_unlocked(sst, SST_IPCD);
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imrx = sst_dsp_shim_read64_unlocked(sst, SST_IMRX);
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dev_err(ipc->dev,
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"ipc: --%s-- ipcx 0x%llx isr 0x%llx ipcd 0x%llx imrx 0x%llx\n",
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text, ipcx, isr, ipcd, imrx);
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}
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static void byt_tx_data_copy(struct ipc_message *msg, char *tx_data,
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size_t tx_size)
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{
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/* msg content = lower 32-bit of the header + data */
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*(u32 *)msg->tx_data = (u32)(msg->header & (u32)-1);
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memcpy(msg->tx_data + sizeof(u32), tx_data, tx_size);
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msg->tx_size += sizeof(u32);
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}
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static u64 byt_reply_msg_match(u64 header, u64 *mask)
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{
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/* match reply to message sent based on msg and stream IDs */
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*mask = IPC_HEADER_MSG_ID_MASK |
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IPC_HEADER_STR_ID_MASK << IPC_HEADER_STR_ID_SHIFT;
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header &= *mask;
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return header;
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}
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int sst_byt_dsp_init(struct device *dev, struct sst_pdata *pdata)
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{
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struct sst_byt *byt;
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struct sst_generic_ipc *ipc;
|
||||
struct sst_fw *byt_sst_fw;
|
||||
struct sst_byt_fw_init init;
|
||||
int err;
|
||||
@ -889,39 +693,30 @@ int sst_byt_dsp_init(struct device *dev, struct sst_pdata *pdata)
|
||||
if (byt == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
byt->dev = dev;
|
||||
ipc = &byt->ipc;
|
||||
ipc->dev = dev;
|
||||
ipc->ops.tx_msg = byt_tx_msg;
|
||||
ipc->ops.shim_dbg = byt_shim_dbg;
|
||||
ipc->ops.tx_data_copy = byt_tx_data_copy;
|
||||
ipc->ops.reply_msg_match = byt_reply_msg_match;
|
||||
|
||||
err = sst_ipc_init(ipc);
|
||||
if (err != 0)
|
||||
goto ipc_init_err;
|
||||
|
||||
INIT_LIST_HEAD(&byt->stream_list);
|
||||
INIT_LIST_HEAD(&byt->tx_list);
|
||||
INIT_LIST_HEAD(&byt->rx_list);
|
||||
INIT_LIST_HEAD(&byt->empty_list);
|
||||
init_waitqueue_head(&byt->boot_wait);
|
||||
init_waitqueue_head(&byt->wait_txq);
|
||||
|
||||
err = msg_empty_list_init(byt);
|
||||
if (err < 0)
|
||||
return -ENOMEM;
|
||||
|
||||
/* start the IPC message thread */
|
||||
init_kthread_worker(&byt->kworker);
|
||||
byt->tx_thread = kthread_run(kthread_worker_fn,
|
||||
&byt->kworker, "%s",
|
||||
dev_name(byt->dev));
|
||||
if (IS_ERR(byt->tx_thread)) {
|
||||
err = PTR_ERR(byt->tx_thread);
|
||||
dev_err(byt->dev, "error failed to create message TX task\n");
|
||||
goto err_free_msg;
|
||||
}
|
||||
init_kthread_work(&byt->kwork, sst_byt_ipc_tx_msgs);
|
||||
|
||||
byt_dev.thread_context = byt;
|
||||
|
||||
/* init SST shim */
|
||||
byt->dsp = sst_dsp_new(dev, &byt_dev, pdata);
|
||||
if (byt->dsp == NULL) {
|
||||
err = -ENODEV;
|
||||
goto dsp_err;
|
||||
goto dsp_new_err;
|
||||
}
|
||||
|
||||
ipc->dsp = byt->dsp;
|
||||
|
||||
/* keep the DSP in reset state for base FW loading */
|
||||
sst_dsp_reset(byt->dsp);
|
||||
|
||||
@ -961,10 +756,10 @@ boot_err:
|
||||
sst_fw_free(byt_sst_fw);
|
||||
fw_err:
|
||||
sst_dsp_free(byt->dsp);
|
||||
dsp_err:
|
||||
kthread_stop(byt->tx_thread);
|
||||
err_free_msg:
|
||||
kfree(byt->msg);
|
||||
dsp_new_err:
|
||||
sst_ipc_fini(ipc);
|
||||
ipc_init_err:
|
||||
kfree(byt);
|
||||
|
||||
return err;
|
||||
}
|
||||
@ -977,7 +772,6 @@ void sst_byt_dsp_free(struct device *dev, struct sst_pdata *pdata)
|
||||
sst_dsp_reset(byt->dsp);
|
||||
sst_fw_free_all(byt->dsp);
|
||||
sst_dsp_free(byt->dsp);
|
||||
kthread_stop(byt->tx_thread);
|
||||
kfree(byt->msg);
|
||||
sst_ipc_fini(&byt->ipc);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(sst_byt_dsp_free);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user