// SPDX-License-Identifier: GPL-2.0-only
/*
* sst_stream.c - Intel SST Driver for audio engine
*
* Copyright (C) 2008-14 Intel Corp
* Authors: Vinod Koul <[email protected]>
* Harsha Priya <[email protected]>
* Dharageswari R <[email protected]>
* KP Jeeja <[email protected]>
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#include <linux/pci.h>
#include <linux/firmware.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/compress_driver.h>
#include <asm/platform_sst_audio.h>
#include "../sst-mfld-platform.h"
#include "sst.h"
int sst_alloc_stream_mrfld(struct intel_sst_drv *sst_drv_ctx, void *params)
{
struct snd_pcm_params *pcm_params;
struct snd_sst_params *str_params;
struct snd_sst_tstamp fw_tstamp;
struct stream_info *str_info;
int i, num_ch, str_id;
dev_dbg(sst_drv_ctx->dev, "Enter\n");
str_params = (struct snd_sst_params *)params;
str_id = str_params->stream_id;
str_info = get_stream_info(sst_drv_ctx, str_id);
if (!str_info)
return -EINVAL;
memset(&str_info->alloc_param, 0, sizeof(str_info->alloc_param));
str_info->alloc_param.operation = str_params->ops;
str_info->alloc_param.codec_type = str_params->codec;
str_info->alloc_param.sg_count = str_params->aparams.sg_count;
str_info->alloc_param.ring_buf_info[0].addr =
str_params->aparams.ring_buf_info[0].addr;
str_info->alloc_param.ring_buf_info[0].size =
str_params->aparams.ring_buf_info[0].size;
str_info->alloc_param.frag_size = str_params->aparams.frag_size;
memcpy(&str_info->alloc_param.codec_params, &str_params->sparams,
sizeof(struct snd_sst_stream_params));
/*
* fill channel map params for multichannel support.
* Ideally channel map should be received from upper layers
* for multichannel support.
* Currently hardcoding as per FW reqm.
*/
num_ch = sst_get_num_channel(str_params);
pcm_params = &str_info->alloc_param.codec_params.uc.pcm_params;
for (i = 0; i < 8; i++) {
if (i < num_ch)
pcm_params->channel_map[i] = i;
else
pcm_params->channel_map[i] = 0xff;
}
sst_drv_ctx->streams[str_id].status = STREAM_INIT;
sst_drv_ctx->streams[str_id].prev = STREAM_UN_INIT;
sst_drv_ctx->streams[str_id].pipe_id = str_params->device_type;
sst_drv_ctx->streams[str_id].task_id = str_params->task;
sst_drv_ctx->streams[str_id].num_ch = num_ch;
if (sst_drv_ctx->info.lpe_viewpt_rqd)
str_info->alloc_param.ts = sst_drv_ctx->info.mailbox_start +
sst_drv_ctx->tstamp + (str_id * sizeof(fw_tstamp));
else
str_info->alloc_param.ts = sst_drv_ctx->mailbox_add +
sst_drv_ctx->tstamp + (str_id * sizeof(fw_tstamp));
dev_dbg(sst_drv_ctx->dev, "alloc tstamp location = 0x%x\n",
str_info->alloc_param.ts);
dev_dbg(sst_drv_ctx->dev, "assigned pipe id 0x%x to task %d\n",
str_info->pipe_id, str_info->task_id);
return sst_realloc_stream(sst_drv_ctx, str_id);
}
/**
* sst_realloc_stream - Send msg for (re-)allocating a stream using the
* @sst_drv_ctx: intel_sst_drv context pointer
* @str_id: stream ID
*
* Send a msg for (re-)allocating a stream using the parameters previously
* passed to sst_alloc_stream_mrfld() for the same stream ID.
* Return: 0 or negative errno value.
*/
int sst_realloc_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
{
struct snd_sst_alloc_response *response;
struct stream_info *str_info;
void *data = NULL;
int ret;
str_info = get_stream_info(sst_drv_ctx, str_id);
if (!str_info)
return -EINVAL;
dev_dbg(sst_drv_ctx->dev, "Alloc for str %d pipe %#x\n",
str_id, str_info->pipe_id);
ret = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id, IPC_CMD,
IPC_IA_ALLOC_STREAM_MRFLD, str_info->pipe_id,
sizeof(str_info->alloc_param), &str_info->alloc_param,
&data, true, true, false, true);
if (ret < 0) {
dev_err(sst_drv_ctx->dev, "FW alloc failed ret %d\n", ret);
/* alloc failed, so reset the state to uninit */
str_info->status = STREAM_UN_INIT;
str_id = ret;
} else if (data) {
response = (struct snd_sst_alloc_response *)data;
ret = response->str_type.result;
if (!ret)
goto out;
dev_err(sst_drv_ctx->dev, "FW alloc failed ret %d\n", ret);
if (ret == SST_ERR_STREAM_IN_USE) {
dev_err(sst_drv_ctx->dev,
"FW not in clean state, send free for:%d\n", str_id);
sst_free_stream(sst_drv_ctx, str_id);
}
str_id = -ret;
}
out:
kfree(data);
return str_id;
}
/**
* sst_start_stream - Send msg for a starting stream
* @sst_drv_ctx: intel_sst_drv context pointer
* @str_id: stream ID
*
* This function is called by any function which wants to start
* a stream.
*/
int sst_start_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
{
int retval = 0;
struct stream_info *str_info;
u16 data = 0;
dev_dbg(sst_drv_ctx->dev, "sst_start_stream for %d\n", str_id);
str_info = get_stream_info(sst_drv_ctx, str_id);
if (!str_info)
return -EINVAL;
if (str_info->status != STREAM_RUNNING)
return -EBADRQC;
retval = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id,
IPC_CMD, IPC_IA_START_STREAM_MRFLD, str_info->pipe_id,
sizeof(u16), &data, NULL, true, true, true, false);
return retval;
}
int sst_send_byte_stream_mrfld(struct intel_sst_drv *sst_drv_ctx,
struct snd_sst_bytes_v2 *bytes)
{ struct ipc_post *msg = NULL;
u32 length;
int pvt_id, ret = 0;
struct sst_block *block = NULL;
u8 bytes_block = bytes->block;
dev_dbg(sst_drv_ctx->dev,
"type:%u ipc_msg:%u block:%u task_id:%u pipe: %#x length:%#x\n",
bytes->type, bytes->ipc_msg, bytes_block, bytes->task_id,
bytes->pipe_id, bytes->len);
if (sst_create_ipc_msg(&msg, true))
return -ENOMEM;
pvt_id = sst_assign_pvt_id(sst_drv_ctx);
sst_fill_header_mrfld(&msg->mrfld_header, bytes->ipc_msg,
bytes->task_id, 1, pvt_id);
msg->mrfld_header.p.header_high.part.res_rqd = bytes_block;
length = bytes->len;
msg->mrfld_header.p.header_low_payload = length;
dev_dbg(sst_drv_ctx->dev, "length is %d\n", length);
memcpy(msg->mailbox_data, &bytes->bytes, bytes->len);
if (bytes_block) {
block = sst_create_block(sst_drv_ctx, bytes->ipc_msg, pvt_id);
if (block == NULL) {
kfree(msg);
ret = -ENOMEM;
goto out;
}
}
sst_add_to_dispatch_list_and_post(sst_drv_ctx, msg);
dev_dbg(sst_drv_ctx->dev, "msg->mrfld_header.p.header_low_payload:%d",
msg->mrfld_header.p.header_low_payload);
if (bytes_block) {
ret = sst_wait_timeout(sst_drv_ctx, block);
if (ret) {
dev_err(sst_drv_ctx->dev, "fw returned err %d\n", ret);
sst_free_block(sst_drv_ctx, block);
goto out;
}
}
if (bytes->type == SND_SST_BYTES_GET) {
/*
* copy the reply and send back
* we need to update only sz and payload
*/
if (bytes_block) {
unsigned char *r = block->data;
dev_dbg(sst_drv_ctx->dev, "read back %d bytes",
bytes->len);
memcpy(bytes->bytes, r, bytes->len);
}
}
if (bytes_block)
sst_free_block(sst_drv_ctx, block);
out:
test_and_clear_bit(pvt_id, &sst_drv_ctx->pvt_id);
return ret;
}
/**
* sst_pause_stream - Send msg for a pausing stream
* @sst_drv_ctx: intel_sst_drv context pointer
* @str_id: stream ID
*
* This function is called by any function which wants to pause
* an already running stream.
*/
int sst_pause_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
{
int retval = 0;
struct stream_info *str_info;
dev_dbg(sst_drv_ctx->dev, "SST DBG:sst_pause_stream for %d\n", str_id);
str_info = get_stream_info(sst_drv_ctx, str_id);
if (!str_info)
return -EINVAL;
if (str_info->status == STREAM_PAUSED)
return 0;
if (str_info->status == STREAM_RUNNING ||
str_info->status == STREAM_INIT) {
if (str_info->prev == STREAM_UN_INIT)
return -EBADRQC;
retval = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id, IPC_CMD,
IPC_IA_PAUSE_STREAM_MRFLD, str_info->pipe_id,
0, NULL, NULL, true, true, false, true);
if (retval == 0) {
str_info->prev = str_info->status;
str_info->status = STREAM_PAUSED;
} else if (retval == -SST_ERR_INVALID_STREAM_ID) {
retval = -EINVAL;
mutex_lock(&sst_drv_ctx->sst_lock);
sst_clean_stream(str_info);
mutex_unlock(&sst_drv_ctx->sst_lock);
}
} else {
retval = -EBADRQC;
dev_dbg(sst_drv_ctx->dev, "SST DBG:BADRQC for stream\n");
}
return retval;
}
/**
* sst_resume_stream - Send msg for resuming stream
* @sst_drv_ctx: intel_sst_drv context pointer
* @str_id: stream ID
*
* This function is called by any function which wants to resume
* an already paused stream.
*/
int sst_resume_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
{
int retval = 0;
struct stream_info *str_info;
dev_dbg(sst_drv_ctx->dev, "SST DBG:sst_resume_stream for %d\n", str_id);
str_info = get_stream_info(sst_drv_ctx, str_id);
if (!str_info)
return -EINVAL;
if (str_info->status == STREAM_RUNNING)
return 0;
if (str_info->resume_status == STREAM_PAUSED &&
str_info->resume_prev == STREAM_RUNNING) {
/*
* Stream was running before suspend and re-created on resume,
* start it to get back to running state.
*/
dev_dbg(sst_drv_ctx->dev, "restart recreated stream after resume\n");
str_info->status = STREAM_RUNNING;
str_info->prev = STREAM_PAUSED;
retval = sst_start_stream(sst_drv_ctx, str_id);
str_info->resume_status = STREAM_UN_INIT;
} else if (str_info->resume_status == STREAM_PAUSED &&
str_info->resume_prev == STREAM_INIT) {
/*
* Stream was idle before suspend and re-created on resume,
* keep it as is.
*/
dev_dbg(sst_drv_ctx->dev, "leaving recreated stream idle after resume\n");
str_info->status = STREAM_INIT;
str_info->prev = STREAM_PAUSED;
str_info->resume_status = STREAM_UN_INIT;
} else if (str_info->status == STREAM_PAUSED) {
retval = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id,
IPC_CMD, IPC_IA_RESUME_STREAM_MRFLD,
str_info->pipe_id, 0, NULL, NULL,
true, true, false, true);
if (!retval) {
if (str_info->prev == STREAM_RUNNING)
str_info->status = STREAM_RUNNING;
else
str_info->status = STREAM_INIT;
str_info->prev = STREAM_PAUSED;
} else if (retval == -SST_ERR_INVALID_STREAM_ID) {
retval = -EINVAL;
mutex_lock(&sst_drv_ctx->sst_lock);
sst_clean_stream(str_info);
mutex_unlock(&sst_drv_ctx->sst_lock);
}
} else {
retval = -EBADRQC;
dev_err(sst_drv_ctx->dev, "SST ERR: BADQRC for stream\n");
}
return retval;
}
/**
* sst_drop_stream - Send msg for stopping stream
* @sst_drv_ctx: intel_sst_drv context pointer
* @str_id: stream ID
*
* This function is called by any function which wants to stop
* a stream.
*/
int sst_drop_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
{
int retval = 0;
struct stream_info *str_info;
dev_dbg(sst_drv_ctx->dev, "SST DBG:sst_drop_stream for %d\n", str_id);
str_info = get_stream_info(sst_drv_ctx, str_id);
if (!str_info)
return -EINVAL;
if (str_info->status != STREAM_UN_INIT) {
str_info->prev = STREAM_UN_INIT;
str_info->status = STREAM_INIT;
str_info->cumm_bytes = 0;
retval = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id,
IPC_CMD, IPC_IA_DROP_STREAM_MRFLD,
str_info->pipe_id, 0, NULL, NULL,
true, true, true, false);
} else {
retval = -EBADRQC;
dev_dbg(sst_drv_ctx->dev, "BADQRC for stream, state %x\n",
str_info->status);
}
return retval;
}
/**
* sst_drain_stream - Send msg for draining stream
* @sst_drv_ctx: intel_sst_drv context pointer
* @str_id: stream ID
* @partial_drain: boolean indicating if a gapless transition is taking place
*
* This function is called by any function which wants to drain
* a stream.
*/
int sst_drain_stream(struct intel_sst_drv *sst_drv_ctx,
int str_id, bool partial_drain)
{
int retval = 0;
struct stream_info *str_info;
dev_dbg(sst_drv_ctx->dev, "SST DBG:sst_drain_stream for %d\n", str_id);
str_info = get_stream_info(sst_drv_ctx, str_id);
if (!str_info)
return -EINVAL;
if (str_info->status != STREAM_RUNNING &&
str_info->status != STREAM_INIT &&
str_info->status != STREAM_PAUSED) {
dev_err(sst_drv_ctx->dev, "SST ERR: BADQRC for stream = %d\n",
str_info->status);
return -EBADRQC;
}
retval = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id, IPC_CMD,
IPC_IA_DRAIN_STREAM_MRFLD, str_info->pipe_id,
sizeof(u8), &partial_drain, NULL, true, true, false, false);
/*
* with new non blocked drain implementation in core we dont need to
* wait for respsonse, and need to only invoke callback for drain
* complete
*/
return retval;
}
/**
* sst_free_stream - Frees a stream
* @sst_drv_ctx: intel_sst_drv context pointer
* @str_id: stream ID
*
* This function is called by any function which wants to free
* a stream.
*/
int sst_free_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
{
int retval = 0;
struct stream_info *str_info;
dev_dbg(sst_drv_ctx->dev, "SST DBG:sst_free_stream for %d\n", str_id);
mutex_lock(&sst_drv_ctx->sst_lock);
if (sst_drv_ctx->sst_state == SST_RESET) {
mutex_unlock(&sst_drv_ctx->sst_lock);
return -ENODEV;
}
mutex_unlock(&sst_drv_ctx->sst_lock);
str_info = get_stream_info(sst_drv_ctx, str_id);
if (!str_info)
return -EINVAL;
mutex_lock(&str_info->lock);
if (str_info->status != STREAM_UN_INIT) {
str_info->prev = str_info->status;
str_info->status = STREAM_UN_INIT;
mutex_unlock(&str_info->lock);
dev_dbg(sst_drv_ctx->dev, "Free for str %d pipe %#x\n",
str_id, str_info->pipe_id);
retval = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id, IPC_CMD,
IPC_IA_FREE_STREAM_MRFLD, str_info->pipe_id, 0,
NULL, NULL, true, true, false, true);
dev_dbg(sst_drv_ctx->dev, "sst: wait for free returned %d\n",
retval);
mutex_lock(&sst_drv_ctx->sst_lock);
sst_clean_stream(str_info);
mutex_unlock(&sst_drv_ctx->sst_lock);
dev_dbg(sst_drv_ctx->dev, "SST DBG:Stream freed\n");
} else {
mutex_unlock(&str_info->lock);
retval = -EBADRQC;
dev_dbg(sst_drv_ctx->dev, "SST DBG:BADQRC for stream\n");
}
return retval;
}
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