/*
* intel_sst_stream.c - Intel SST Driver for audio engine
*
* Copyright (C) 2008-10 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* This file contains the stream operations of SST driver
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/pci.h>
#include <linux/syscalls.h>
#include <linux/firmware.h>
#include <linux/sched.h>
#ifdef CONFIG_MRST_RAR_HANDLER
#include <linux/rar_register.h>
#include "../memrar/memrar.h"
#endif
#include "intel_sst_ioctl.h"
#include "intel_sst.h"
#include "intel_sst_fw_ipc.h"
#include "intel_sst_common.h"
/**
* sst_get_stream_params - Send msg to query for stream parameters
* @str_id: stream id for which the parameters are queried for
* @get_params: out parameters to which the parameters are copied to
*
* This function is called when the stream parameters are queiried for
*/
int sst_get_stream_params(int str_id,
struct snd_sst_get_stream_params *get_params)
{
int retval = 0;
struct ipc_post *msg = NULL;
struct stream_info *str_info;
struct snd_sst_fw_get_stream_params *fw_params;
pr_debug("get_stream for %d\n", str_id);
retval = sst_validate_strid(str_id);
if (retval)
return retval;
str_info = &sst_drv_ctx->streams[str_id];
if (str_info->status != STREAM_UN_INIT) {
if (str_info->ctrl_blk.on == true) {
pr_err("control path in use\n");
return -EINVAL;
}
if (sst_create_short_msg(&msg)) {
pr_err("message creation failed\n");
return -ENOMEM;
}
fw_params = kzalloc(sizeof(*fw_params), GFP_ATOMIC);
if (!fw_params) {
pr_err("mem allocation failed\n");
kfree(msg);
return -ENOMEM;
}
sst_fill_header(&msg->header, IPC_IA_GET_STREAM_PARAMS,
0, str_id);
str_info->ctrl_blk.condition = false;
str_info->ctrl_blk.ret_code = 0;
str_info->ctrl_blk.on = true;
str_info->ctrl_blk.data = (void *) fw_params;
spin_lock(&sst_drv_ctx->list_spin_lock);
list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
spin_unlock(&sst_drv_ctx->list_spin_lock);
sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
retval = sst_wait_interruptible_timeout(sst_drv_ctx,
&str_info->ctrl_blk, SST_BLOCK_TIMEOUT);
if (retval) {
get_params->codec_params.result = retval;
kfree(fw_params);
return -EIO;
}
memcpy(&get_params->pcm_params, &fw_params->pcm_params,
sizeof(fw_params->pcm_params));
memcpy(&get_params->codec_params.sparams,
&fw_params->codec_params,
sizeof(fw_params->codec_params));
get_params->codec_params.result = 0;
get_params->codec_params.stream_id = str_id;
get_params->codec_params.codec = str_info->codec;
get_params->codec_params.ops = str_info->ops;
get_params->codec_params.stream_type = str_info->str_type;
kfree(fw_params);
} else {
pr_debug("Stream is not in the init state\n");
}
return retval;
}
/**
* sst_set_stream_param - Send msg for setting stream parameters
*
* @str_id: stream id
* @str_param: stream params
*
* This function sets stream params during runtime
*/
int sst_set_stream_param(int str_id, struct snd_sst_params *str_param)
{
int retval = 0;
struct ipc_post *msg = NULL;
struct stream_info *str_info;
BUG_ON(!str_param);
if (sst_drv_ctx->streams[str_id].ops != str_param->ops) {
pr_err("Invalid operation\n");
return -EINVAL;
}
retval = sst_validate_strid(str_id);
if (retval)
return retval;
pr_debug("set_stream for %d\n", str_id);
str_info = &sst_drv_ctx->streams[str_id];
if (sst_drv_ctx->streams[str_id].status == STREAM_INIT) {
if (str_info->ctrl_blk.on == true) {
pr_err("control path in use\n");
return -EAGAIN;
}
if (sst_create_large_msg(&msg))
return -ENOMEM;
sst_fill_header(&msg->header,
IPC_IA_SET_STREAM_PARAMS, 1, str_id);
str_info->ctrl_blk.condition = false;
str_info->ctrl_blk.ret_code = 0;
str_info->ctrl_blk.on = true;
msg->header.part.data = sizeof(u32) +
sizeof(str_param->sparams);
memcpy(msg->mailbox_data, &msg->header, sizeof(u32));
memcpy(msg->mailbox_data + sizeof(u32), &str_param->sparams,
sizeof(str_param->sparams));
spin_lock(&sst_drv_ctx->list_spin_lock);
list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
spin_unlock(&sst_drv_ctx->list_spin_lock);
sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
retval = sst_wait_interruptible_timeout(sst_drv_ctx,
&str_info->ctrl_blk, SST_BLOCK_TIMEOUT);
if (retval < 0) {
retval = -EIO;
sst_clean_stream(str_info);
}
} else {
retval = -EBADRQC;
pr_err("BADQRC for stream\n");
}
return retval;
}
/**
* sst_get_vol - This function allows to get the premix gain or gain of a stream
*
* @get_vol: this is an output param through which the volume
* structure is passed back to user
*
* This function is called when the premix gain or stream gain is queried for
*/
int sst_get_vol(struct snd_sst_vol *get_vol)
{
int retval = 0;
struct ipc_post *msg = NULL;
struct snd_sst_vol *fw_get_vol;
int str_id = get_vol->stream_id;
pr_debug("get vol called\n");
if (sst_create_short_msg(&msg))
return -ENOMEM;
sst_fill_header(&msg->header,
IPC_IA_GET_STREAM_VOL, 0, str_id);
sst_drv_ctx->vol_info_blk.condition = false;
sst_drv_ctx->vol_info_blk.ret_code = 0;
sst_drv_ctx->vol_info_blk.on = true;
fw_get_vol = kzalloc(sizeof(*fw_get_vol), GFP_ATOMIC);
if (!fw_get_vol) {
pr_err("mem allocation failed\n");
kfree(msg);
return -ENOMEM;
}
sst_drv_ctx->vol_info_blk.data = (void *)fw_get_vol;
spin_lock(&sst_drv_ctx->list_spin_lock);
list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
spin_unlock(&sst_drv_ctx->list_spin_lock);
sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
retval = sst_wait_interruptible_timeout(sst_drv_ctx,
&sst_drv_ctx->vol_info_blk, SST_BLOCK_TIMEOUT);
if (retval)
retval = -EIO;
else {
pr_debug("stream id %d\n", fw_get_vol->stream_id);
pr_debug("volume %d\n", fw_get_vol->volume);
pr_debug("ramp duration %d\n", fw_get_vol->ramp_duration);
pr_debug("ramp_type %d\n", fw_get_vol->ramp_type);
memcpy(get_vol, fw_get_vol, sizeof(*fw_get_vol));
}
return retval;
}
/**
* sst_set_vol - This function allows to set the premix gain or gain of a stream
*
* @set_vol: this holds the volume structure that needs to be set
*
* This function is called when premix gain or stream gain is requested to be set
*/
int sst_set_vol(struct snd_sst_vol *set_vol)
{
int retval = 0;
struct ipc_post *msg = NULL;
pr_debug("set vol called\n");
if (sst_create_large_msg(&msg)) {
pr_err("message creation failed\n");
return -ENOMEM;
}
sst_fill_header(&msg->header, IPC_IA_SET_STREAM_VOL, 1,
set_vol->stream_id);
msg->header.part.data = sizeof(u32) + sizeof(*set_vol);
memcpy(msg->mailbox_data, &msg->header, sizeof(u32));
memcpy(msg->mailbox_data + sizeof(u32), set_vol, sizeof(*set_vol));
sst_drv_ctx->vol_info_blk.condition = false;
sst_drv_ctx->vol_info_blk.ret_code = 0;
sst_drv_ctx->vol_info_blk.on = true;
sst_drv_ctx->vol_info_blk.data = set_vol;
spin_lock(&sst_drv_ctx->list_spin_lock);
list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
spin_unlock(&sst_drv_ctx->list_spin_lock);
sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
retval = sst_wait_interruptible_timeout(sst_drv_ctx,
&sst_drv_ctx->vol_info_blk, SST_BLOCK_TIMEOUT);
if (retval) {
pr_err("error in set_vol = %d\n", retval);
retval = -EIO;
}
return retval;
}
/**
* sst_set_mute - This function sets premix mute or soft mute of a stream
*
* @set_mute: this holds the mute structure that needs to be set
*
* This function is called when premix mute or stream mute requested to be set
*/
int sst_set_mute(struct snd_sst_mute *set_mute)
{
int retval = 0;
struct ipc_post *msg = NULL;
pr_debug("set mute called\n");
if (sst_create_large_msg(&msg)) {
pr_err("message creation failed\n");
return -ENOMEM;
}
sst_fill_header(&msg->header, IPC_IA_SET_STREAM_MUTE, 1,
set_mute->stream_id);
sst_drv_ctx->mute_info_blk.condition = false;
sst_drv_ctx->mute_info_blk.ret_code = 0;
sst_drv_ctx->mute_info_blk.on = true;
sst_drv_ctx->mute_info_blk.data = set_mute;
msg->header.part.data = sizeof(u32) + sizeof(*set_mute);
memcpy(msg->mailbox_data, &msg->header, sizeof(u32));
memcpy(msg->mailbox_data + sizeof(u32), set_mute,
sizeof(*set_mute));
spin_lock(&sst_drv_ctx->list_spin_lock);
list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
spin_unlock(&sst_drv_ctx->list_spin_lock);
sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
retval = sst_wait_interruptible_timeout(sst_drv_ctx,
&sst_drv_ctx->mute_info_blk, SST_BLOCK_TIMEOUT);
if (retval) {
pr_err("error in set_mute = %d\n", retval);
retval = -EIO;
}
return retval;
}
int sst_prepare_target(struct snd_sst_slot_info *slot)
{
if (slot->target_device == SND_SST_TARGET_PMIC
&& slot->device_instance == 1) {
/*music mode*/
if (sst_drv_ctx->pmic_port_instance == 0)
sst_drv_ctx->scard_ops->set_voice_port(
DEACTIVATE);
} else if ((slot->target_device == SND_SST_TARGET_PMIC ||
slot->target_device == SND_SST_TARGET_MODEM) &&
slot->device_instance == 0) {
/*voip mode where pcm0 is active*/
if (sst_drv_ctx->pmic_port_instance == 1)
sst_drv_ctx->scard_ops->set_audio_port(
DEACTIVATE);
}
return 0;
}
int sst_activate_target(struct snd_sst_slot_info *slot)
{
if (slot->target_device == SND_SST_TARGET_PMIC &&
slot->device_instance == 1) {
/*music mode*/
sst_drv_ctx->pmic_port_instance = 1;
sst_drv_ctx->scard_ops->set_audio_port(ACTIVATE);
sst_drv_ctx->scard_ops->set_pcm_audio_params(
slot->pcm_params.sfreq,
slot->pcm_params.pcm_wd_sz,
slot->pcm_params.num_chan);
if (sst_drv_ctx->pb_streams)
sst_drv_ctx->scard_ops->power_up_pmic_pb(1);
if (sst_drv_ctx->cp_streams)
sst_drv_ctx->scard_ops->power_up_pmic_cp(1);
} else if ((slot->target_device == SND_SST_TARGET_PMIC ||
slot->target_device == SND_SST_TARGET_MODEM) &&
slot->device_instance == 0) {
/*voip mode where pcm0 is active*/
sst_drv_ctx->pmic_port_instance = 0;
sst_drv_ctx->scard_ops->set_voice_port(
ACTIVATE);
sst_drv_ctx->scard_ops->power_up_pmic_pb(0);
/*sst_drv_ctx->scard_ops->power_up_pmic_cp(0);*/
}
return 0;
}
int sst_parse_target(struct snd_sst_slot_info *slot)
{
int retval = 0;
if (slot->action == SND_SST_PORT_ACTIVATE &&
slot->device_type == SND_SST_DEVICE_PCM) {
retval = sst_activate_target(slot);
if (retval)
pr_err("SST_Activate_target_fail\n");
else
pr_err("SST_Activate_target_pass\n");
return retval;
} else if (slot->action == SND_SST_PORT_PREPARE &&
slot->device_type == SND_SST_DEVICE_PCM) {
retval = sst_prepare_target(slot);
if (retval)
pr_err("SST_prepare_target_fail\n");
else
pr_err("SST_prepare_target_pass\n");
return retval;
} else {
pr_err("slot_action : %d, device_type: %d\n",
slot->action, slot->device_type);
return retval;
}
}
int sst_send_target(struct snd_sst_target_device *target)
{
int retval;
struct ipc_post *msg;
if (sst_create_large_msg(&msg)) {
pr_err("message creation failed\n");
return -ENOMEM;
}
sst_fill_header(&msg->header, IPC_IA_TARGET_DEV_SELECT, 1, 0);
sst_drv_ctx->tgt_dev_blk.condition = false;
sst_drv_ctx->tgt_dev_blk.ret_code = 0;
sst_drv_ctx->tgt_dev_blk.on = true;
msg->header.part.data = sizeof(u32) + sizeof(*target);
memcpy(msg->mailbox_data, &msg->header, sizeof(u32));
memcpy(msg->mailbox_data + sizeof(u32), target,
sizeof(*target));
spin_lock(&sst_drv_ctx->list_spin_lock);
list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
spin_unlock(&sst_drv_ctx->list_spin_lock);
sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
pr_debug("message sent- waiting\n");
retval = sst_wait_interruptible_timeout(sst_drv_ctx,
&sst_drv_ctx->tgt_dev_blk, TARGET_DEV_BLOCK_TIMEOUT);
if (retval)
pr_err("target device ipc failed = 0x%x\n", retval);
return retval;
}
int sst_target_device_validate(struct snd_sst_target_device *target)
{
int retval = 0;
int i;
for (i = 0; i < SST_MAX_TARGET_DEVICES; i++) {
if (target->devices[i].device_type == SND_SST_DEVICE_PCM) {
/*pcm device, check params*/
if (target->devices[i].device_instance == 1) {
if ((target->devices[i].device_mode !=
SND_SST_DEV_MODE_PCM_MODE4_I2S) &&
(target->devices[i].device_mode !=
SND_SST_DEV_MODE_PCM_MODE4_RIGHT_JUSTIFIED)
&& (target->devices[i].device_mode !=
SND_SST_DEV_MODE_PCM_MODE1))
goto err;
} else if (target->devices[i].device_instance == 0) {
if ((target->devices[i].device_mode !=
SND_SST_DEV_MODE_PCM_MODE2)
&& (target->devices[i].device_mode !=
SND_SST_DEV_MODE_PCM_MODE4_I2S)
&& (target->devices[i].device_mode !=
SND_SST_DEV_MODE_PCM_MODE1))
goto err;
if (target->devices[i].pcm_params.sfreq != 8000
|| target->devices[i].pcm_params.num_chan != 1
|| target->devices[i].pcm_params.pcm_wd_sz !=
16)
goto err;
} else {
err:
pr_err("i/p params incorrect\n");
return -EINVAL;
}
}
}
return retval;
}
/**
* sst_target_device_select - This function sets the target device configurations
*
* @target: this parameter holds the configurations to be set
*
* This function is called when the user layer wants to change the target
* device's configurations
*/
int sst_target_device_select(struct snd_sst_target_device *target)
{
int retval, i, prepare_count = 0;
pr_debug("Target Device Select\n");
if (target->device_route < 0 || target->device_route > 2) {
pr_err("device route is invalid\n");
return -EINVAL;
}
if (target->device_route != 0) {
pr_err("Unsupported config\n");
return -EIO;
}
retval = sst_target_device_validate(target);
if (retval)
return retval;
retval = sst_send_target(target);
if (retval)
return retval;
for (i = 0; i < SST_MAX_TARGET_DEVICES; i++) {
if (target->devices[i].action == SND_SST_PORT_ACTIVATE) {
pr_debug("activate called in %d\n", i);
retval = sst_parse_target(&target->devices[i]);
if (retval)
return retval;
} else if (target->devices[i].action == SND_SST_PORT_PREPARE) {
pr_debug("PREPARE in %d, Forwarding\n", i);
retval = sst_parse_target(&target->devices[i]);
if (retval) {
pr_err("Parse Target fail %d\n", retval);
return retval;
}
pr_debug("Parse Target successful %d\n", retval);
if (target->devices[i].device_type ==
SND_SST_DEVICE_PCM)
prepare_count++;
}
}
if (target->devices[0].action == SND_SST_PORT_PREPARE &&
prepare_count == 0)
sst_drv_ctx->scard_ops->power_down_pmic();
return retval;
}
#ifdef CONFIG_MRST_RAR_HANDLER
/*This function gets the physical address of the secure memory from the handle*/
static inline int sst_get_RAR(struct RAR_buffer *buffers, int count)
{
int retval = 0, rar_status = 0;
rar_status = rar_handle_to_bus(buffers, count);
if (count != rar_status) {
pr_err("The rar CALL Failed");
retval = -EIO;
}
if (buffers->info.type != RAR_TYPE_AUDIO) {
pr_err("Invalid RAR type\n");
return -EINVAL;
}
return retval;
}
#endif
/* This function creates the scatter gather list to be sent to firmware to
capture/playback data*/
static int sst_create_sg_list(struct stream_info *stream,
struct sst_frame_info *sg_list)
{
struct sst_stream_bufs *kbufs = NULL;
#ifdef CONFIG_MRST_RAR_HANDLER
struct RAR_buffer rar_buffers;
int retval = 0;
#endif
int i = 0;
list_for_each_entry(kbufs, &stream->bufs, node) {
if (kbufs->in_use == false) {
#ifdef CONFIG_MRST_RAR_HANDLER
if (stream->ops == STREAM_OPS_PLAYBACK_DRM) {
pr_debug("DRM playback handling\n");
rar_buffers.info.handle = (__u32)kbufs->addr;
rar_buffers.info.size = kbufs->size;
pr_debug("rar handle 0x%x size=0x%x\n",
rar_buffers.info.handle,
rar_buffers.info.size);
retval = sst_get_RAR(&rar_buffers, 1);
if (retval)
return retval;
sg_list->addr[i].addr = rar_buffers.bus_address;
/* rar_buffers.info.size; */
sg_list->addr[i].size = (__u32)kbufs->size;
pr_debug("phyaddr[%d] 0x%x Size:0x%x\n"
, i, sg_list->addr[i].addr,
sg_list->addr[i].size);
}
#endif
if (stream->ops != STREAM_OPS_PLAYBACK_DRM) {
sg_list->addr[i].addr =
virt_to_phys((void *)
kbufs->addr + kbufs->offset);
sg_list->addr[i].size = kbufs->size;
pr_debug("phyaddr[%d]:0x%x Size:0x%x\n"
, i , sg_list->addr[i].addr, kbufs->size);
}
stream->curr_bytes += sg_list->addr[i].size;
kbufs->in_use = true;
i++;
}
if (i >= MAX_NUM_SCATTER_BUFFERS)
break;
}
sg_list->num_entries = i;
pr_debug("sg list entries = %d\n", sg_list->num_entries);
return i;
}
/**
* sst_play_frame - Send msg for sending stream frames
*
* @str_id: ID of stream
*
* This function is called to send data to be played out
* to the firmware
*/
int sst_play_frame(int str_id)
{
int i = 0, retval = 0;
struct ipc_post *msg = NULL;
struct sst_frame_info sg_list = {0};
struct sst_stream_bufs *kbufs = NULL, *_kbufs;
struct stream_info *stream;
pr_debug("play frame for %d\n", str_id);
retval = sst_validate_strid(str_id);
if (retval)
return retval;
stream = &sst_drv_ctx->streams[str_id];
/* clear prev sent buffers */
list_for_each_entry_safe(kbufs, _kbufs, &stream->bufs, node) {
if (kbufs->in_use == true) {
spin_lock(&stream->pcm_lock);
list_del(&kbufs->node);
spin_unlock(&stream->pcm_lock);
kfree(kbufs);
}
}
/* update bytes sent */
stream->cumm_bytes += stream->curr_bytes;
stream->curr_bytes = 0;
if (list_empty(&stream->bufs)) {
/* no user buffer available */
pr_debug("Null buffer stream status %d\n", stream->status);
stream->prev = stream->status;
stream->status = STREAM_INIT;
pr_debug("new stream status = %d\n", stream->status);
if (stream->need_draining == true) {
pr_debug("draining stream\n");
if (sst_create_short_msg(&msg)) {
pr_err("mem allocation failed\n");
return -ENOMEM;
}
sst_fill_header(&msg->header, IPC_IA_DRAIN_STREAM,
0, str_id);
spin_lock(&sst_drv_ctx->list_spin_lock);
list_add_tail(&msg->node,
&sst_drv_ctx->ipc_dispatch_list);
spin_unlock(&sst_drv_ctx->list_spin_lock);
sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
} else if (stream->data_blk.on == true) {
pr_debug("user list empty.. wake\n");
/* unblock */
stream->data_blk.ret_code = 0;
stream->data_blk.condition = true;
stream->data_blk.on = false;
wake_up(&sst_drv_ctx->wait_queue);
}
return 0;
}
/* create list */
i = sst_create_sg_list(stream, &sg_list);
/* post msg */
if (sst_create_large_msg(&msg))
return -ENOMEM;
sst_fill_header(&msg->header, IPC_IA_PLAY_FRAMES, 1, str_id);
msg->header.part.data = sizeof(u32) + sizeof(sg_list);
memcpy(msg->mailbox_data, &msg->header, sizeof(u32));
memcpy(msg->mailbox_data + sizeof(u32), &sg_list, sizeof(sg_list));
spin_lock(&sst_drv_ctx->list_spin_lock);
list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
spin_unlock(&sst_drv_ctx->list_spin_lock);
sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
return 0;
}
/**
* sst_capture_frame - Send msg for sending stream frames
*
* @str_id: ID of stream
*
* This function is called to capture data from the firmware
*/
int sst_capture_frame(int str_id)
{
int i = 0, retval = 0;
struct ipc_post *msg = NULL;
struct sst_frame_info sg_list = {0};
struct sst_stream_bufs *kbufs = NULL, *_kbufs;
struct stream_info *stream;
pr_debug("capture frame for %d\n", str_id);
retval = sst_validate_strid(str_id);
if (retval)
return retval;
stream = &sst_drv_ctx->streams[str_id];
/* clear prev sent buffers */
list_for_each_entry_safe(kbufs, _kbufs, &stream->bufs, node) {
if (kbufs->in_use == true) {
list_del(&kbufs->node);
kfree(kbufs);
pr_debug("del node\n");
}
}
if (list_empty(&stream->bufs)) {
/* no user buffer available */
pr_debug("Null buffer!!!!stream status %d\n",
stream->status);
stream->prev = stream->status;
stream->status = STREAM_INIT;
pr_debug("new stream status = %d\n",
stream->status);
if (stream->data_blk.on == true) {
pr_debug("user list empty.. wake\n");
/* unblock */
stream->data_blk.ret_code = 0;
stream->data_blk.condition = true;
stream->data_blk.on = false;
wake_up(&sst_drv_ctx->wait_queue);
}
return 0;
}
/* create new sg list */
i = sst_create_sg_list(stream, &sg_list);
/* post msg */
if (sst_create_large_msg(&msg))
return -ENOMEM;
sst_fill_header(&msg->header, IPC_IA_CAPT_FRAMES, 1, str_id);
msg->header.part.data = sizeof(u32) + sizeof(sg_list);
memcpy(msg->mailbox_data, &msg->header, sizeof(u32));
memcpy(msg->mailbox_data + sizeof(u32), &sg_list, sizeof(sg_list));
spin_lock(&sst_drv_ctx->list_spin_lock);
list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
spin_unlock(&sst_drv_ctx->list_spin_lock);
sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
/*update bytes recevied*/
stream->cumm_bytes += stream->curr_bytes;
stream->curr_bytes = 0;
pr_debug("Cum bytes = %d\n", stream->cumm_bytes);
return 0;
}
/*This function is used to calculate the minimum size of input buffers given*/
static unsigned int calculate_min_size(struct snd_sst_buffs *bufs)
{
int i, min_val = bufs->buff_entry[0].size;
for (i = 1 ; i < bufs->entries; i++) {
if (bufs->buff_entry[i].size < min_val)
min_val = bufs->buff_entry[i].size;
}
pr_debug("min_val = %d\n", min_val);
return min_val;
}
static unsigned int calculate_max_size(struct snd_sst_buffs *bufs)
{
int i, max_val = bufs->buff_entry[0].size;
for (i = 1 ; i < bufs->entries; i++) {
if (bufs->buff_entry[i].size > max_val)
max_val = bufs->buff_entry[i].size;
}
pr_debug("max_val = %d\n", max_val);
return max_val;
}
/*This function is used to allocate input and output buffers to be sent to
the firmware that will take encoded data and return decoded data*/
static int sst_allocate_decode_buf(struct stream_info *str_info,
struct snd_sst_dbufs *dbufs,
unsigned int cum_input_given,
unsigned int cum_output_given)
{
#ifdef CONFIG_MRST_RAR_HANDLER
if (str_info->ops == STREAM_OPS_PLAYBACK_DRM) {
if (dbufs->ibufs->type == SST_BUF_RAR &&
dbufs->obufs->type == SST_BUF_RAR) {
if (dbufs->ibufs->entries == dbufs->obufs->entries)
return 0;
else {
pr_err("RAR entries dont match\n");
return -EINVAL;
}
} else
str_info->decode_osize = cum_output_given;
return 0;
}
#endif
if (!str_info->decode_ibuf) {
pr_debug("no i/p buffers, trying full size\n");
str_info->decode_isize = cum_input_given;
str_info->decode_ibuf = kzalloc(str_info->decode_isize,
GFP_KERNEL);
str_info->idecode_alloc = str_info->decode_isize;
}
if (!str_info->decode_ibuf) {
pr_debug("buff alloc failed, try max size\n");
str_info->decode_isize = calculate_max_size(dbufs->ibufs);
str_info->decode_ibuf = kzalloc(
str_info->decode_isize, GFP_KERNEL);
str_info->idecode_alloc = str_info->decode_isize;
}
if (!str_info->decode_ibuf) {
pr_debug("buff alloc failed, try min size\n");
str_info->decode_isize = calculate_min_size(dbufs->ibufs);
str_info->decode_ibuf = kzalloc(str_info->decode_isize,
GFP_KERNEL);
if (!str_info->decode_ibuf) {
pr_err("mem allocation failed\n");
return -ENOMEM;
}
str_info->idecode_alloc = str_info->decode_isize;
}
str_info->decode_osize = cum_output_given;
if (str_info->decode_osize > sst_drv_ctx->mmap_len)
str_info->decode_osize = sst_drv_ctx->mmap_len;
return 0;
}
/*This function is used to send the message to firmware to decode the data*/
static int sst_send_decode_mess(int str_id, struct stream_info *str_info,
struct snd_sst_decode_info *dec_info)
{
struct ipc_post *msg = NULL;
int retval = 0;
pr_debug("SST DBG:sst_set_mute:called\n");
if (str_info->decode_ibuf_type == SST_BUF_RAR) {
#ifdef CONFIG_MRST_RAR_HANDLER
dec_info->frames_in.addr[0].addr =
(unsigned long)str_info->decode_ibuf;
dec_info->frames_in.addr[0].size =
str_info->decode_isize;
#endif
} else {
dec_info->frames_in.addr[0].addr = virt_to_phys((void *)
str_info->decode_ibuf);
dec_info->frames_in.addr[0].size = str_info->decode_isize;
}
if (str_info->decode_obuf_type == SST_BUF_RAR) {
#ifdef CONFIG_MRST_RAR_HANDLER
dec_info->frames_out.addr[0].addr =
(unsigned long)str_info->decode_obuf;
dec_info->frames_out.addr[0].size = str_info->decode_osize;
#endif
} else {
dec_info->frames_out.addr[0].addr = virt_to_phys((void *)
str_info->decode_obuf) ;
dec_info->frames_out.addr[0].size = str_info->decode_osize;
}
dec_info->frames_in.num_entries = 1;
dec_info->frames_out.num_entries = 1;
dec_info->frames_in.rsrvd = 0;
dec_info->frames_out.rsrvd = 0;
dec_info->input_bytes_consumed = 0;
dec_info->output_bytes_produced = 0;
if (sst_create_large_msg(&msg)) {
pr_err("message creation failed\n");
return -ENOMEM;
}
sst_fill_header(&msg->header, IPC_IA_DECODE_FRAMES, 1, str_id);
msg->header.part.data = sizeof(u32) + sizeof(*dec_info);
memcpy(msg->mailbox_data, &msg->header, sizeof(u32));
memcpy(msg->mailbox_data + sizeof(u32), dec_info,
sizeof(*dec_info));
spin_lock(&sst_drv_ctx->list_spin_lock);
list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
spin_unlock(&sst_drv_ctx->list_spin_lock);
str_info->data_blk.condition = false;
str_info->data_blk.ret_code = 0;
str_info->data_blk.on = true;
str_info->data_blk.data = dec_info;
sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
retval = sst_wait_interruptible(sst_drv_ctx, &str_info->data_blk);
return retval;
}
#ifdef CONFIG_MRST_RAR_HANDLER
static int sst_prepare_input_buffers_rar(struct stream_info *str_info,
struct snd_sst_dbufs *dbufs,
int *input_index, int *in_copied,
int *input_index_valid_size, int *new_entry_flag)
{
int retval = 0;
int i;
if (str_info->ops == STREAM_OPS_PLAYBACK_DRM) {
struct RAR_buffer rar_buffers;
__u32 info;
retval = copy_from_user((void *) &info,
dbufs->ibufs->buff_entry[i].buffer,
sizeof(__u32));
if (retval) {
pr_err("cpy from user fail\n");
return -EAGAIN;
}
rar_buffers.info.type = dbufs->ibufs->type;
rar_buffers.info.size = dbufs->ibufs->buff_entry[i].size;
rar_buffers.info.handle = info;
pr_debug("rar in DnR(input buffer function)=0x%x size=0x%x",
rar_buffers.info.handle,
rar_buffers.info.size);
retval = sst_get_RAR(&rar_buffers, 1);
if (retval) {
pr_debug("SST ERR: RAR API failed\n");
return retval;
}
str_info->decode_ibuf =
(void *) ((unsigned long) rar_buffers.bus_address);
pr_debug("RAR buf addr in DnR (input buffer function)0x%lu",
(unsigned long) str_info->decode_ibuf);
pr_debug("rar in DnR decode funtion/output b_add rar =0x%lu",
(unsigned long) rar_buffers.bus_address);
*input_index = i + 1;
str_info->decode_isize = dbufs->ibufs->buff_entry[i].size;
str_info->decode_ibuf_type = dbufs->ibufs->type;
*in_copied = str_info->decode_isize;
}
return retval;
}
#endif
/*This function is used to prepare the kernel input buffers with contents
before sending for decode*/
static int sst_prepare_input_buffers(struct stream_info *str_info,
struct snd_sst_dbufs *dbufs,
int *input_index, int *in_copied,
int *input_index_valid_size, int *new_entry_flag)
{
int i, cpy_size, retval = 0;
pr_debug("input_index = %d, input entries = %d\n",
*input_index, dbufs->ibufs->entries);
for (i = *input_index; i < dbufs->ibufs->entries; i++) {
#ifdef CONFIG_MRST_RAR_HANDLER
retval = sst_prepare_input_buffers_rar(str_info,
dbufs, input_index, in_copied,
input_index_valid_size, new_entry_flag);
if (retval) {
pr_err("In prepare input buffers for RAR\n");
return -EIO;
}
#endif
*input_index = i;
if (*input_index_valid_size == 0)
*input_index_valid_size =
dbufs->ibufs->buff_entry[i].size;
pr_debug("inout addr = %p, size = %d\n",
dbufs->ibufs->buff_entry[i].buffer,
*input_index_valid_size);
pr_debug("decode_isize = %d, in_copied %d\n",
str_info->decode_isize, *in_copied);
if (*input_index_valid_size <=
(str_info->decode_isize - *in_copied))
cpy_size = *input_index_valid_size;
else
cpy_size = str_info->decode_isize - *in_copied;
pr_debug("cpy size = %d\n", cpy_size);
if (!dbufs->ibufs->buff_entry[i].buffer) {
pr_err("i/p buffer is null\n");
return -EINVAL;
}
pr_debug("Try copy To %p, From %p, size %d\n",
str_info->decode_ibuf + *in_copied,
dbufs->ibufs->buff_entry[i].buffer, cpy_size);
retval =
copy_from_user((void *)(str_info->decode_ibuf + *in_copied),
(void *) dbufs->ibufs->buff_entry[i].buffer,
cpy_size);
if (retval) {
pr_err("copy from user failed\n");
return -EIO;
}
*in_copied += cpy_size;
*input_index_valid_size -= cpy_size;
pr_debug("in buff size = %d, in_copied = %d\n",
*input_index_valid_size, *in_copied);
if (*input_index_valid_size != 0) {
pr_debug("more input buffers left\n");
dbufs->ibufs->buff_entry[i].buffer += cpy_size;
break;
}
if (*in_copied == str_info->decode_isize &&
*input_index_valid_size == 0 &&
(i+1) <= dbufs->ibufs->entries) {
pr_debug("all input buffers copied\n");
*new_entry_flag = true;
*input_index = i + 1;
break;
}
}
return retval;
}
/* This function is used to copy the decoded data from kernel buffers to
the user output buffers with contents after decode*/
static int sst_prepare_output_buffers(struct stream_info *str_info,
struct snd_sst_dbufs *dbufs,
int *output_index, int output_size,
int *out_copied)
{
int i, cpy_size, retval = 0;
pr_debug("output_index = %d, output entries = %d\n",
*output_index,
dbufs->obufs->entries);
for (i = *output_index; i < dbufs->obufs->entries; i++) {
*output_index = i;
pr_debug("output addr = %p, size = %d\n",
dbufs->obufs->buff_entry[i].buffer,
dbufs->obufs->buff_entry[i].size);
pr_debug("output_size = %d, out_copied = %d\n",
output_size, *out_copied);
if (dbufs->obufs->buff_entry[i].size <
(output_size - *out_copied))
cpy_size = dbufs->obufs->buff_entry[i].size;
else
cpy_size = output_size - *out_copied;
pr_debug("cpy size = %d\n", cpy_size);
pr_debug("Try copy To: %p, From %p, size %d\n",
dbufs->obufs->buff_entry[i].buffer,
sst_drv_ctx->mmap_mem + *out_copied,
cpy_size);
retval = copy_to_user(dbufs->obufs->buff_entry[i].buffer,
sst_drv_ctx->mmap_mem + *out_copied,
cpy_size);
if (retval) {
pr_err("copy to user failed\n");
return -EIO;
} else
pr_debug("copy to user passed\n");
*out_copied += cpy_size;
dbufs->obufs->buff_entry[i].size -= cpy_size;
pr_debug("o/p buff size %d, out_copied %d\n",
dbufs->obufs->buff_entry[i].size, *out_copied);
if (dbufs->obufs->buff_entry[i].size != 0) {
*output_index = i;
dbufs->obufs->buff_entry[i].buffer += cpy_size;
break;
} else if (*out_copied == output_size) {
*output_index = i + 1;
break;
}
}
return retval;
}
/**
* sst_decode - Send msg for decoding frames
*
* @str_id: ID of stream
* @dbufs: param that holds the user input and output buffers and size
*
* This function is called to decode data from the firmware
*/
int sst_decode(int str_id, struct snd_sst_dbufs *dbufs)
{
int retval = 0, i;
unsigned long long total_input = 0 , total_output = 0;
unsigned int cum_input_given = 0 , cum_output_given = 0;
int copy_in_done = false, copy_out_done = false;
int input_index = 0, output_index = 0;
int input_index_valid_size = 0;
int in_copied, out_copied;
int new_entry_flag;
u64 output_size;
struct stream_info *str_info;
struct snd_sst_decode_info dec_info;
unsigned long long input_bytes, output_bytes;
sst_drv_ctx->scard_ops->power_down_pmic();
pr_debug("Powering_down_PMIC...\n");
retval = sst_validate_strid(str_id);
if (retval)
return retval;
str_info = &sst_drv_ctx->streams[str_id];
if (str_info->status != STREAM_INIT) {
pr_err("invalid stream state = %d\n",
str_info->status);
return -EINVAL;
}
str_info->prev = str_info->status;
str_info->status = STREAM_DECODE;
for (i = 0; i < dbufs->ibufs->entries; i++)
cum_input_given += dbufs->ibufs->buff_entry[i].size;
for (i = 0; i < dbufs->obufs->entries; i++)
cum_output_given += dbufs->obufs->buff_entry[i].size;
/* input and output buffer allocation */
retval = sst_allocate_decode_buf(str_info, dbufs,
cum_input_given, cum_output_given);
if (retval) {
pr_err("mem allocation failed, abort!!!\n");
retval = -ENOMEM;
goto finish;
}
str_info->decode_isize = str_info->idecode_alloc;
str_info->decode_ibuf_type = dbufs->ibufs->type;
str_info->decode_obuf_type = dbufs->obufs->type;
while ((copy_out_done == false) && (copy_in_done == false)) {
in_copied = 0;
new_entry_flag = false;
retval = sst_prepare_input_buffers(str_info,\
dbufs, &input_index, &in_copied,
&input_index_valid_size, &new_entry_flag);
if (retval) {
pr_err("prepare in buffers failed\n");
goto finish;
}
if (str_info->ops != STREAM_OPS_PLAYBACK_DRM)
str_info->decode_obuf = sst_drv_ctx->mmap_mem;
#ifdef CONFIG_MRST_RAR_HANDLER
else {
if (dbufs->obufs->type == SST_BUF_RAR) {
struct RAR_buffer rar_buffers;
__u32 info;
pr_debug("DRM");
retval = copy_from_user((void *) &info,
dbufs->obufs->
buff_entry[output_index].buffer,
sizeof(__u32));
rar_buffers.info.size = dbufs->obufs->
buff_entry[output_index].size;
rar_buffers.info.handle = info;
retval = sst_get_RAR(&rar_buffers, 1);
if (retval)
return retval;
str_info->decode_obuf = (void *)((unsigned long)
rar_buffers.bus_address);
str_info->decode_osize = dbufs->obufs->
buff_entry[output_index].size;
str_info->decode_obuf_type = dbufs->obufs->type;
pr_debug("DRM handling\n");
pr_debug("o/p_add=0x%lu Size=0x%x\n",
(unsigned long) str_info->decode_obuf,
str_info->decode_osize);
} else {
str_info->decode_obuf = sst_drv_ctx->mmap_mem;
str_info->decode_osize = dbufs->obufs->
buff_entry[output_index].size;
}
}
#endif
if (str_info->ops != STREAM_OPS_PLAYBACK_DRM) {
if (str_info->decode_isize > in_copied) {
str_info->decode_isize = in_copied;
pr_debug("i/p size = %d\n",
str_info->decode_isize);
}
}
retval = sst_send_decode_mess(str_id, str_info, &dec_info);
if (retval || dec_info.input_bytes_consumed == 0) {
pr_err("SST ERR: mess failed or no input consumed\n");
goto finish;
}
input_bytes = dec_info.input_bytes_consumed;
output_bytes = dec_info.output_bytes_produced;
pr_debug("in_copied=%d, con=%lld, prod=%lld\n",
in_copied, input_bytes, output_bytes);
if (dbufs->obufs->type == SST_BUF_RAR) {
output_index += 1;
if (output_index == dbufs->obufs->entries) {
copy_in_done = true;
pr_debug("all i/p cpy done\n");
}
total_output += output_bytes;
} else {
out_copied = 0;
output_size = output_bytes;
retval = sst_prepare_output_buffers(str_info, dbufs,
&output_index, output_size, &out_copied);
if (retval) {
pr_err("prep out buff fail\n");
goto finish;
}
if (str_info->ops != STREAM_OPS_PLAYBACK_DRM) {
if (in_copied != input_bytes) {
int bytes_left = in_copied -
input_bytes;
pr_debug("bytes %d\n",
bytes_left);
if (new_entry_flag == true)
input_index--;
while (bytes_left) {
struct snd_sst_buffs *ibufs;
struct snd_sst_buff_entry
*buff_entry;
unsigned int size_sent;
ibufs = dbufs->ibufs;
buff_entry =
&ibufs->buff_entry[input_index];
size_sent = buff_entry->size -\
input_index_valid_size;
if (bytes_left == size_sent) {
bytes_left = 0;
} else if (bytes_left <
size_sent) {
buff_entry->buffer +=
(size_sent -
bytes_left);
buff_entry->size -=
(size_sent -
bytes_left);
bytes_left = 0;
} else {
bytes_left -= size_sent;
input_index--;
input_index_valid_size =
0;
}
}
}
}
total_output += out_copied;
if (str_info->decode_osize != out_copied) {
str_info->decode_osize -= out_copied;
pr_debug("output size modified = %d\n",
str_info->decode_osize);
}
}
total_input += input_bytes;
if (str_info->ops == STREAM_OPS_PLAYBACK_DRM) {
if (total_input == cum_input_given)
copy_in_done = true;
copy_out_done = true;
} else {
if (total_output == cum_output_given) {
copy_out_done = true;
pr_debug("all o/p cpy done\n");
}
if (total_input == cum_input_given) {
copy_in_done = true;
pr_debug("all i/p cpy done\n");
}
}
pr_debug("copy_out = %d, copy_in = %d\n",
copy_out_done, copy_in_done);
}
finish:
dbufs->input_bytes_consumed = total_input;
dbufs->output_bytes_produced = total_output;
str_info->status = str_info->prev;
str_info->prev = STREAM_DECODE;
kfree(str_info->decode_ibuf);
str_info->decode_ibuf = NULL;
return retval;
}
