new file mode 100644
@@ -0,0 +1,437 @@
+/*
+ * sst_stream.c - Intel SST Driver for audio engine
+ *
+ * Copyright (C) 2008-14 Intel Corp
+ * Authors: Vinod Koul <vinod.koul@intel.com>
+ * Harsha Priya <priya.harsha@intel.com>
+ * Dharageswari R <dharageswari.r@intel.com>
+ * KP Jeeja <jeeja.kp@intel.com>
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+#include <linux/pci.h>
+#include <linux/firmware.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/pm_runtime.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"
+#include "../sst-dsp.h"
+
+int sst_alloc_stream_mrfld(struct intel_sst_drv *sst_drv_ctx, void *params)
+{
+ struct snd_sst_alloc_mrfld alloc_param;
+ struct snd_sst_params *str_params;
+ struct snd_sst_tstamp fw_tstamp;
+ struct stream_info *str_info;
+ struct snd_sst_alloc_response *response;
+ unsigned int str_id, pipe_id, task_id;
+ int i, num_ch, ret = 0;
+ void *data = NULL;
+
+ dev_dbg(sst_drv_ctx->dev, "Enter\n");
+ BUG_ON(!params);
+
+ str_params = (struct snd_sst_params *)params;
+ memset(&alloc_param, 0, sizeof(alloc_param));
+ alloc_param.operation = str_params->ops;
+ alloc_param.codec_type = str_params->codec;
+ alloc_param.sg_count = str_params->aparams.sg_count;
+ alloc_param.ring_buf_info[0].addr =
+ str_params->aparams.ring_buf_info[0].addr;
+ alloc_param.ring_buf_info[0].size =
+ str_params->aparams.ring_buf_info[0].size;
+ alloc_param.frag_size = str_params->aparams.frag_size;
+
+ memcpy(&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);
+ for (i = 0; i < 8; i++) {
+ if (i < num_ch)
+ alloc_param.codec_params.uc.pcm_params.channel_map[i] = i;
+ else
+ alloc_param.codec_params.uc.pcm_params.channel_map[i] = 0xFF;
+ }
+
+ str_id = str_params->stream_id;
+ str_info = get_stream_info(sst_drv_ctx, str_id);
+ if (str_info == NULL) {
+ dev_err(sst_drv_ctx->dev, "get stream info returned null\n");
+ return -EINVAL;
+ }
+
+ pipe_id = str_params->device_type;
+ task_id = str_params->task;
+ sst_drv_ctx->streams[str_id].pipe_id = pipe_id;
+ sst_drv_ctx->streams[str_id].task_id = task_id;
+ sst_drv_ctx->streams[str_id].num_ch = num_ch;
+
+ if (sst_drv_ctx->info.lpe_viewpt_rqd)
+ alloc_param.ts = sst_drv_ctx->info.mailbox_start +
+ sst_drv_ctx->tstamp + (str_id * sizeof(fw_tstamp));
+ else
+ 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",
+ alloc_param.ts);
+ dev_dbg(sst_drv_ctx->dev, "assigned pipe id 0x%x to task %d\n",
+ pipe_id, task_id);
+
+ /* allocate device type context */
+ sst_init_stream(&sst_drv_ctx->streams[str_id], alloc_param.codec_type,
+ str_id, alloc_param.operation, 0);
+
+ dev_info(sst_drv_ctx->dev, "Alloc for str %d pipe %#x\n",
+ str_id, pipe_id);
+ ret = sst_prepare_and_post_msg(sst_drv_ctx, task_id, IPC_CMD,
+ IPC_IA_ALLOC_STREAM_MRFLD, pipe_id, sizeof(alloc_param),
+ &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
+* @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;
+
+ 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 0;
+}
+
+/*
+ * sst_pause_stream - Send msg for a pausing stream
+ * @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
+ * @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->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
+ * @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
+* @str_id: stream ID
+*
+* 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
+ * @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;
+ struct intel_sst_ops *ops;
+
+ 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;
+ ops = sst_drv_ctx->ops;
+
+ 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_info(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;
+}