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* intel_sst_interface.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>
* Jeeja KP <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 driver exposes the audio engine functionalities to the ALSA
* and middleware.
* Upper layer interfaces (MAD driver, MMF) to SST driver
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/pci.h>
#include <linux/fs.h>
#include <linux/uio.h>
#include <linux/aio.h>
#include <linux/uaccess.h>
#include <linux/firmware.h>
#include <linux/pm_runtime.h>
#include <linux/ioctl.h>
#ifdef CONFIG_MRST_RAR_HANDLER
#include <linux/rar_register.h>
#include "../../../drivers/staging/memrar/memrar.h"
#endif
#include "intel_sst.h"
#include "intel_sst_ioctl.h"
#include "intel_sst_fw_ipc.h"
#include "intel_sst_common.h"
#define AM_MODULE 1
#define STREAM_MODULE 0
/**
* intel_sst_check_device - checks SST device
*
* This utility function checks the state of SST device and downlaods FW if
* not done, or resumes the device if suspended
*/
static int intel_sst_check_device(void)
{
int retval = 0;
if (sst_drv_ctx->pmic_state != SND_MAD_INIT_DONE) {
pr_warn("Sound card not available\n");
return -EIO;
}
if (sst_drv_ctx->sst_state == SST_SUSPENDED) {
pr_debug("Resuming from Suspended state\n");
retval = intel_sst_resume(sst_drv_ctx->pci);
if (retval) {
pr_debug("Resume Failed= %#x,abort\n", retval);
return retval;
}
}
if (sst_drv_ctx->sst_state == SST_UN_INIT) {
/* FW is not downloaded */
retval = sst_download_fw();
if (retval)
return -ENODEV;
if (sst_drv_ctx->pci_id == SST_MRST_PCI_ID) {
retval = sst_drv_ctx->rx_time_slot_status;
if (retval != RX_TIMESLOT_UNINIT
&& sst_drv_ctx->pmic_vendor != SND_NC)
sst_enable_rx_timeslot(retval);
}
}
return 0;
}
/**
* intel_sst_open - opens a handle to driver
*
* @i_node: inode structure
* @file_ptr:pointer to file
*
* This function is called by OS when a user space component
* tries to get a driver handle. Only one handle at a time
* will be allowed
*/
int intel_sst_open(struct inode *i_node, struct file *file_ptr)
{
unsigned int retval;
mutex_lock(&sst_drv_ctx->stream_lock);
pm_runtime_get_sync(&sst_drv_ctx->pci->dev);
retval = intel_sst_check_device();
if (retval) {
pm_runtime_put(&sst_drv_ctx->pci->dev);
mutex_unlock(&sst_drv_ctx->stream_lock);
return retval;
}
if (sst_drv_ctx->encoded_cnt < MAX_ENC_STREAM) {
struct ioctl_pvt_data *data =
kzalloc(sizeof(struct ioctl_pvt_data), GFP_KERNEL);
if (!data) {
pm_runtime_put(&sst_drv_ctx->pci->dev);
mutex_unlock(&sst_drv_ctx->stream_lock);
return -ENOMEM;
}
sst_drv_ctx->encoded_cnt++;
mutex_unlock(&sst_drv_ctx->stream_lock);
data->pvt_id = sst_assign_pvt_id(sst_drv_ctx);
data->str_id = 0;
file_ptr->private_data = (void *)data;
pr_debug("pvt_id handle = %d!\n", data->pvt_id);
} else {
retval = -EUSERS;
pm_runtime_put(&sst_drv_ctx->pci->dev);
mutex_unlock(&sst_drv_ctx->stream_lock);
}
return retval;
}
/**
* intel_sst_open_cntrl - opens a handle to driver
*
* @i_node: inode structure
* @file_ptr:pointer to file
*
* This function is called by OS when a user space component
* tries to get a driver handle to /dev/intel_sst_control.
* Only one handle at a time will be allowed
* This is for control operations only
*/
int intel_sst_open_cntrl(struct inode *i_node, struct file *file_ptr)
{
unsigned int retval;
/* audio manager open */
mutex_lock(&sst_drv_ctx->stream_lock);
pm_runtime_get_sync(&sst_drv_ctx->pci->dev);
retval = intel_sst_check_device();
if (retval) {
pm_runtime_put(&sst_drv_ctx->pci->dev);
mutex_unlock(&sst_drv_ctx->stream_lock);
return retval;
}
if (sst_drv_ctx->am_cnt < MAX_AM_HANDLES) {
sst_drv_ctx->am_cnt++;
pr_debug("AM handle opened...\n");
file_ptr->private_data = NULL;
} else {
retval = -EACCES;
pm_runtime_put(&sst_drv_ctx->pci->dev);
}
mutex_unlock(&sst_drv_ctx->stream_lock);
return retval;
}
/**
* intel_sst_release - releases a handle to driver
*
* @i_node: inode structure
* @file_ptr: pointer to file
*
* This function is called by OS when a user space component
* tries to release a driver handle.
*/
int intel_sst_release(struct inode *i_node, struct file *file_ptr)
{
struct ioctl_pvt_data *data = file_ptr->private_data;
pr_debug("Release called, closing app handle\n");
mutex_lock(&sst_drv_ctx->stream_lock);
sst_drv_ctx->encoded_cnt--;
sst_drv_ctx->stream_cnt--;
pm_runtime_put(&sst_drv_ctx->pci->dev);
mutex_unlock(&sst_drv_ctx->stream_lock);
free_stream_context(data->str_id);
kfree(data);
return 0;
}
int intel_sst_release_cntrl(struct inode *i_node, struct file *file_ptr)
{
/* audio manager close */
mutex_lock(&sst_drv_ctx->stream_lock);
sst_drv_ctx->am_cnt--;
pm_runtime_put(&sst_drv_ctx->pci->dev);
mutex_unlock(&sst_drv_ctx->stream_lock);
pr_debug("AM handle closed\n");
return 0;
}
/**
* intel_sst_mmap - mmaps a kernel buffer to user space for copying data
*
* @vma: vm area structure instance
* @file_ptr: pointer to file
*
* This function is called by OS when a user space component
* tries to get mmap memory from driver
*/
int intel_sst_mmap(struct file *file_ptr, struct vm_area_struct *vma)
{
int retval, length;
struct ioctl_pvt_data *data =
(struct ioctl_pvt_data *)file_ptr->private_data;
int str_id = data->str_id;
void *mem_area;
retval = sst_validate_strid(str_id);
if (retval)
return -EINVAL;
length = vma->vm_end - vma->vm_start;
pr_debug("called for stream %d length 0x%x\n", str_id, length);
if (length > sst_drv_ctx->mmap_len)
return -ENOMEM;
if (!sst_drv_ctx->mmap_mem)
return -EIO;
/* round it up to the page boundary */
/*mem_area = (void *)((((unsigned long)sst_drv_ctx->mmap_mem)
+ PAGE_SIZE - 1) & PAGE_MASK);*/
mem_area = (void *) PAGE_ALIGN((unsigned int) sst_drv_ctx->mmap_mem);
/* map the whole physically contiguous area in one piece */
retval = remap_pfn_range(vma,
vma->vm_start,
virt_to_phys((void *)mem_area) >> PAGE_SHIFT,
length,
vma->vm_page_prot);
if (retval)
sst_drv_ctx->streams[str_id].mmapped = false;
else
sst_drv_ctx->streams[str_id].mmapped = true;
pr_debug("mmap ret 0x%x\n", retval);
return retval;
}
/* sets mmap data buffers to play/capture*/
static int intel_sst_mmap_play_capture(u32 str_id,
struct snd_sst_mmap_buffs *mmap_buf)
{
struct sst_stream_bufs *bufs;
int retval, i;
struct stream_info *stream;
struct snd_sst_mmap_buff_entry *buf_entry;
struct snd_sst_mmap_buff_entry *tmp_buf;
pr_debug("called for str_id %d\n", str_id);
retval = sst_validate_strid(str_id);
if (retval)
return -EINVAL;
stream = &sst_drv_ctx->streams[str_id];
if (stream->mmapped != true)
return -EIO;
if (stream->status == STREAM_UN_INIT ||
stream->status == STREAM_DECODE) {
return -EBADRQC;
}
stream->curr_bytes = 0;
stream->cumm_bytes = 0;
tmp_buf = kcalloc(mmap_buf->entries, sizeof(*tmp_buf), GFP_KERNEL);
if (!tmp_buf)
return -ENOMEM;
if (copy_from_user(tmp_buf, (void __user *)mmap_buf->buff,
mmap_buf->entries * sizeof(*tmp_buf))) {
retval = -EFAULT;
goto out_free;
}
pr_debug("new buffers count %d status %d\n",
mmap_buf->entries, stream->status);
buf_entry = tmp_buf;
for (i = 0; i < mmap_buf->entries; i++) {
bufs = kzalloc(sizeof(*bufs), GFP_KERNEL);
if (!bufs) {
retval = -ENOMEM;
goto out_free;
}
bufs->size = buf_entry->size;
bufs->offset = buf_entry->offset;
bufs->addr = sst_drv_ctx->mmap_mem;
bufs->in_use = false;
buf_entry++;
/* locking here */
mutex_lock(&stream->lock);
list_add_tail(&bufs->node, &stream->bufs);
mutex_unlock(&stream->lock);
}
mutex_lock(&stream->lock);
stream->data_blk.condition = false;
stream->data_blk.ret_code = 0;
if (stream->status == STREAM_INIT &&
stream->prev != STREAM_UN_INIT &&
stream->need_draining != true) {
stream->prev = stream->status;
stream->status = STREAM_RUNNING;
if (stream->ops == STREAM_OPS_PLAYBACK) {
if (sst_play_frame(str_id) < 0) {
pr_warn("play frames fail\n");
mutex_unlock(&stream->lock);
retval = -EIO;
goto out_free;
}
} else if (stream->ops == STREAM_OPS_CAPTURE) {
if (sst_capture_frame(str_id) < 0) {
pr_warn("capture frame fail\n");
mutex_unlock(&stream->lock);
retval = -EIO;
goto out_free;
}
}
}
mutex_unlock(&stream->lock);
/* Block the call for reply */
if (!list_empty(&stream->bufs)) {
stream->data_blk.on = true;
retval = sst_wait_interruptible(sst_drv_ctx,
&stream->data_blk);
}
if (retval >= 0)
retval = stream->cumm_bytes;
pr_debug("end of play/rec ioctl bytes = %d!!\n", retval);
out_free:
kfree(tmp_buf);
return retval;
}
/*sets user data buffers to play/capture*/
static int intel_sst_play_capture(struct stream_info *stream, int str_id)
{
int retval;
stream->data_blk.ret_code = 0;
stream->data_blk.on = true;
stream->data_blk.condition = false;
mutex_lock(&stream->lock);
if (stream->status == STREAM_INIT && stream->prev != STREAM_UN_INIT) {
/* stream is started */
stream->prev = stream->status;
stream->status = STREAM_RUNNING;
}
if (stream->status == STREAM_INIT && stream->prev == STREAM_UN_INIT) {
/* stream is not started yet */
pr_debug("Stream isn't in started state %d, prev %d\n",
stream->status, stream->prev);
} else if ((stream->status == STREAM_RUNNING ||
stream->status == STREAM_PAUSED) &&
stream->need_draining != true) {
/* stream is started */
if (stream->ops == STREAM_OPS_PLAYBACK ||
stream->ops == STREAM_OPS_PLAYBACK_DRM) {
if (sst_play_frame(str_id) < 0) {
pr_warn("play frames failed\n");
mutex_unlock(&stream->lock);
return -EIO;
}
} else if (stream->ops == STREAM_OPS_CAPTURE) {
if (sst_capture_frame(str_id) < 0) {
pr_warn("capture frames failed\n");
mutex_unlock(&stream->lock);
return -EIO;
}
}
} else {
mutex_unlock(&stream->lock);
return -EIO;
}
mutex_unlock(&stream->lock);
/* Block the call for reply */
retval = sst_wait_interruptible(sst_drv_ctx, &stream->data_blk);
if (retval) {
stream->status = STREAM_INIT;
pr_debug("wait returned error...\n");
}
return retval;
}
/* fills kernel list with buffer addresses for SST DSP driver to process*/
static int snd_sst_fill_kernel_list(struct stream_info *stream,
const struct iovec *iovec, unsigned long nr_segs,
struct list_head *copy_to_list)
{
struct sst_stream_bufs *stream_bufs;
unsigned long index, mmap_len;
unsigned char __user *bufp;
unsigned long size, copied_size;
int retval = 0, add_to_list = 0;
static int sent_offset;
static unsigned long sent_index;
#ifdef CONFIG_MRST_RAR_HANDLER
if (stream->ops == STREAM_OPS_PLAYBACK_DRM) {
for (index = stream->sg_index; index < nr_segs; index++) {
__u32 rar_handle;
struct sst_stream_bufs *stream_bufs =
kzalloc(sizeof(*stream_bufs), GFP_KERNEL);
stream->sg_index = index;
if (!stream_bufs)
return -ENOMEM;
if (copy_from_user((void *) &rar_handle,
iovec[index].iov_base,
sizeof(__u32)))
return -EFAULT;
stream_bufs->addr = (char *)rar_handle;
stream_bufs->in_use = false;
stream_bufs->size = iovec[0].iov_len;
/* locking here */
mutex_lock(&stream->lock);
list_add_tail(&stream_bufs->node, &stream->bufs);
mutex_unlock(&stream->lock);
}
stream->sg_index = index;
return retval;
}
#endif
stream_bufs = kzalloc(sizeof(*stream_bufs), GFP_KERNEL);
if (!stream_bufs)
return -ENOMEM;
stream_bufs->addr = sst_drv_ctx->mmap_mem;
mmap_len = sst_drv_ctx->mmap_len;
stream_bufs->addr = sst_drv_ctx->mmap_mem;
bufp = stream->cur_ptr;
copied_size = 0;
if (!stream->sg_index)
sent_index = sent_offset = 0;
for (index = stream->sg_index; index < nr_segs; index++) {
stream->sg_index = index;
if (!stream->cur_ptr)
bufp = iovec[index].iov_base;
size = ((unsigned long)iovec[index].iov_base
+ iovec[index].iov_len) - (unsigned long) bufp;
if ((copied_size + size) > mmap_len)
size = mmap_len - copied_size;
if (stream->ops == STREAM_OPS_PLAYBACK) {
if (copy_from_user((void *)
(stream_bufs->addr + copied_size),
bufp, size)) {
/* Clean up the list and return error code */
retval = -EFAULT;
break;
}
} else if (stream->ops == STREAM_OPS_CAPTURE) {
struct snd_sst_user_cap_list *entry =
kzalloc(sizeof(*entry), GFP_KERNEL);
if (!entry) {
kfree(stream_bufs);
return -ENOMEM;
}
entry->iov_index = index;
entry->iov_offset = (unsigned long) bufp -
(unsigned long)iovec[index].iov_base;
entry->offset = copied_size;
entry->size = size;
list_add_tail(&entry->node, copy_to_list);
}
stream->cur_ptr = bufp + size;
if (((unsigned long)iovec[index].iov_base
+ iovec[index].iov_len) <
((unsigned long)iovec[index].iov_base)) {
pr_debug("Buffer overflows\n");
kfree(stream_bufs);
return -EINVAL;
}
if (((unsigned long)iovec[index].iov_base
+ iovec[index].iov_len) ==
(unsigned long)stream->cur_ptr) {
stream->cur_ptr = NULL;
stream->sg_index++;
}
copied_size += size;
pr_debug("copied_size - %lx\n", copied_size);
if ((copied_size >= mmap_len) ||
(stream->sg_index == nr_segs)) {
add_to_list = 1;
}
if (add_to_list) {
stream_bufs->in_use = false;
stream_bufs->size = copied_size;
/* locking here */
mutex_lock(&stream->lock);
list_add_tail(&stream_bufs->node, &stream->bufs);
mutex_unlock(&stream->lock);
break;
}
}
return retval;
}
/* This function copies the captured data returned from SST DSP engine
* to the user buffers*/
static int snd_sst_copy_userbuf_capture(struct stream_info *stream,
const struct iovec *iovec,
struct list_head *copy_to_list)
{
struct snd_sst_user_cap_list *entry, *_entry;
struct sst_stream_bufs *kbufs = NULL, *_kbufs;
int retval = 0;
/* copy sent buffers */
pr_debug("capture stream copying to user now...\n");
list_for_each_entry_safe(kbufs, _kbufs, &stream->bufs, node) {
if (kbufs->in_use == true) {
/* copy to user */
list_for_each_entry_safe(entry, _entry,
copy_to_list, node) {
if (copy_to_user(iovec[entry->iov_index].iov_base + entry->iov_offset,
kbufs->addr + entry->offset,
entry->size)) {
/* Clean up the list and return error */
retval = -EFAULT;
break;
}
list_del(&entry->node);
kfree(entry);
}
}
}
pr_debug("end of cap copy\n");
return retval;
}
/*
* snd_sst_userbufs_play_cap - constructs the list from user buffers
*
* @iovec:pointer to iovec structure
* @nr_segs:number entries in the iovec structure
* @str_id:stream id
* @stream:pointer to stream_info structure
*
* This function will traverse the user list and copy the data to the kernel
* space buffers.
*/
static int snd_sst_userbufs_play_cap(const struct iovec *iovec,
unsigned long nr_segs, unsigned int str_id,
struct stream_info *stream)
{
int retval;
LIST_HEAD(copy_to_list);
retval = snd_sst_fill_kernel_list(stream, iovec, nr_segs,
©_to_list);
retval = intel_sst_play_capture(stream, str_id);
if (retval < 0)
return retval;
if (stream->ops == STREAM_OPS_CAPTURE) {
retval = snd_sst_copy_userbuf_capture(stream, iovec,
©_to_list);
}
return retval;
}
/* This function is common function across read/write
for user buffers called from system calls*/
static int intel_sst_read_write(unsigned int str_id, char __user *buf,
size_t count)
{
int retval;
struct stream_info *stream;
struct iovec iovec;
unsigned long nr_segs;
retval = sst_validate_strid(str_id);
if (retval)
return -EINVAL;
stream = &sst_drv_ctx->streams[str_id];
if (stream->mmapped == true) {
pr_warn("user write and stream is mapped\n");
return -EIO;
}
if (!count)
return -EINVAL;
stream->curr_bytes = 0;
stream->cumm_bytes = 0;
/* copy user buf details */
pr_debug("new buffers %p, copy size %d, status %d\n" ,
buf, (int) count, (int) stream->status);
stream->buf_type = SST_BUF_USER_STATIC;
iovec.iov_base = buf;
iovec.iov_len = count;
nr_segs = 1;
do {
retval = snd_sst_userbufs_play_cap(
&iovec, nr_segs, str_id, stream);
if (retval < 0)
break;
} while (stream->sg_index < nr_segs);
stream->sg_index = 0;
stream->cur_ptr = NULL;
if (retval >= 0)
retval = stream->cumm_bytes;
pr_debug("end of play/rec bytes = %d!!\n", retval);
return retval;
}
/***
* intel_sst_write - This function is called when user tries to play out data
*
* @file_ptr:pointer to file
* @buf:user buffer to be played out
* @count:size of tthe buffer
* @offset:offset to start from
*
* writes the encoded data into DSP
*/
int intel_sst_write(struct file *file_ptr, const char __user *buf,
size_t count, loff_t *offset)
{
struct ioctl_pvt_data *data = file_ptr->private_data;
int str_id = data->str_id;
struct stream_info *stream = &sst_drv_ctx->streams[str_id];
pr_debug("called for %d\n", str_id);
if (stream->status == STREAM_UN_INIT ||
stream->status == STREAM_DECODE) {
return -EBADRQC;
}
return intel_sst_read_write(str_id, (char __user *)buf, count);
}
/*
* intel_sst_aio_write - write buffers
*
* @kiocb:pointer to a structure containing file pointer
* @iov:list of user buffer to be played out
* @nr_segs:number of entries
* @offset:offset to start from
*
* This function is called when user tries to play out multiple data buffers
*/
ssize_t intel_sst_aio_write(struct kiocb *kiocb, const struct iovec *iov,
unsigned long nr_segs, loff_t offset)
{
int retval;
struct ioctl_pvt_data *data = kiocb->ki_filp->private_data;
int str_id = data->str_id;
struct stream_info *stream;
pr_debug("entry - %ld\n", nr_segs);
if (is_sync_kiocb(kiocb) == false)
return -EINVAL;
pr_debug("called for str_id %d\n", str_id);
retval = sst_validate_strid(str_id);
if (retval)
return -EINVAL;
stream = &sst_drv_ctx->streams[str_id];
if (stream->mmapped == true)
return -EIO;
if (stream->status == STREAM_UN_INIT ||
stream->status == STREAM_DECODE) {
return -EBADRQC;
}
stream->curr_bytes = 0;
stream->cumm_bytes = 0;
pr_debug("new segs %ld, offset %d, status %d\n" ,
nr_segs, (int) offset, (int) stream->status);
stream->buf_type = SST_BUF_USER_STATIC;
do {
retval = snd_sst_userbufs_play_cap(iov, nr_segs,
str_id, stream);
if (retval < 0)
break;
} while (stream->sg_index < nr_segs);
stream->sg_index = 0;
stream->cur_ptr = NULL;
if (retval >= 0)
retval = stream->cumm_bytes;
pr_debug("end of play/rec bytes = %d!!\n", retval);
return retval;
}
/*
* intel_sst_read - read the encoded data
*
* @file_ptr: pointer to file
* @buf: user buffer to be filled with captured data
* @count: size of tthe buffer
* @offset: offset to start from
*
* This function is called when user tries to capture data
*/
int intel_sst_read(struct file *file_ptr, char __user *buf,
size_t count, loff_t *offset)
{
struct ioctl_pvt_data *data = file_ptr->private_data;
int str_id = data->str_id;
struct stream_info *stream = &sst_drv_ctx->streams[str_id];
pr_debug("called for %d\n", str_id);
if (stream->status == STREAM_UN_INIT ||
stream->status == STREAM_DECODE)
return -EBADRQC;
return intel_sst_read_write(str_id, buf, count);
}
/*
* intel_sst_aio_read - aio read
*
* @kiocb: pointer to a structure containing file pointer
* @iov: list of user buffer to be filled with captured
* @nr_segs: number of entries
* @offset: offset to start from
*
* This function is called when user tries to capture out multiple data buffers
*/
ssize_t intel_sst_aio_read(struct kiocb *kiocb, const struct iovec *iov,
unsigned long nr_segs, loff_t offset)
{
int retval;
struct ioctl_pvt_data *data = kiocb->ki_filp->private_data;
int str_id = data->str_id;
struct stream_info *stream;
pr_debug("entry - %ld\n", nr_segs);
if (is_sync_kiocb(kiocb) == false) {
pr_debug("aio_read from user space is not allowed\n");
return -EINVAL;
}
pr_debug("called for str_id %d\n", str_id);
retval = sst_validate_strid(str_id);
if (retval)
return -EINVAL;
stream = &sst_drv_ctx->streams[str_id];
if (stream->mmapped == true)
return -EIO;
if (stream->status == STREAM_UN_INIT ||
stream->status == STREAM_DECODE)
return -EBADRQC;
stream->curr_bytes = 0;
stream->cumm_bytes = 0;
pr_debug("new segs %ld, offset %d, status %d\n" ,
nr_segs, (int) offset, (int) stream->status);
stream->buf_type = SST_BUF_USER_STATIC;
do {
retval = snd_sst_userbufs_play_cap(iov, nr_segs,
str_id, stream);
if (retval < 0)
break;
} while (stream->sg_index < nr_segs);
stream->sg_index = 0;
stream->cur_ptr = NULL;
if (retval >= 0)
retval = stream->cumm_bytes;
pr_debug("end of play/rec bytes = %d!!\n", retval);
return retval;
}
/* sst_print_stream_params - prints the stream parameters (debug fn)*/
static void sst_print_stream_params(struct snd_sst_get_stream_params *get_prm)
{
pr_debug("codec params:result = %d\n",
get_prm->codec_params.result);
pr_debug("codec params:stream = %d\n",
get_prm->codec_params.stream_id);
pr_debug("codec params:codec = %d\n",
get_prm->codec_params.codec);
pr_debug("codec params:ops = %d\n",
get_prm->codec_params.ops);
pr_debug("codec params:stream_type = %d\n",
get_prm->codec_params.stream_type);
pr_debug("pcmparams:sfreq = %d\n",
get_prm->pcm_params.sfreq);
pr_debug("pcmparams:num_chan = %d\n",
get_prm->pcm_params.num_chan);
pr_debug("pcmparams:pcm_wd_sz = %d\n",
get_prm->pcm_params.pcm_wd_sz);
return;
}
/**
* sst_create_algo_ipc - create ipc msg for algorithm parameters
*
* @algo_params: Algorithm parameters
* @msg: post msg pointer
*
* This function is called to create ipc msg
*/
int sst_create_algo_ipc(struct snd_ppp_params *algo_params,
struct ipc_post **msg)
{
if (sst_create_large_msg(msg))
return -ENOMEM;
sst_fill_header(&(*msg)->header,
IPC_IA_ALG_PARAMS, 1, algo_params->str_id);
(*msg)->header.part.data = sizeof(u32) +
sizeof(*algo_params) + algo_params->size;
memcpy((*msg)->mailbox_data, &(*msg)->header, sizeof(u32));
memcpy((*msg)->mailbox_data + sizeof(u32),
algo_params, sizeof(*algo_params));
return 0;
}
/**
* sst_send_algo_ipc - send ipc msg for algorithm parameters
*
* @msg: post msg pointer
*
* This function is called to send ipc msg
*/
int sst_send_algo_ipc(struct ipc_post **msg)
{
sst_drv_ctx->ppp_params_blk.condition = false;
sst_drv_ctx->ppp_params_blk.ret_code = 0;
sst_drv_ctx->ppp_params_blk.on = true;
sst_drv_ctx->ppp_params_blk.data = NULL;
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 sst_wait_interruptible_timeout(sst_drv_ctx,
&sst_drv_ctx->ppp_params_blk, SST_BLOCK_TIMEOUT);
}
/**
* intel_sst_ioctl_dsp - receives the device ioctl's
*
* @cmd:Ioctl cmd
* @arg:data
*
* This function is called when a user space component
* sends a DSP Ioctl to SST driver
*/
long intel_sst_ioctl_dsp(unsigned int cmd, unsigned long arg)
{
int retval = 0;
struct snd_ppp_params algo_params;
struct snd_ppp_params *algo_params_copied;
struct ipc_post *msg;
switch (_IOC_NR(cmd)) {
case _IOC_NR(SNDRV_SST_SET_ALGO):
if (copy_from_user(&algo_params, (void __user *)arg,
sizeof(algo_params)))
return -EFAULT;
if (algo_params.size > SST_MAILBOX_SIZE)
return -EMSGSIZE;
pr_debug("Algo ID %d Str id %d Enable %d Size %d\n",
algo_params.algo_id, algo_params.str_id,
algo_params.enable, algo_params.size);
retval = sst_create_algo_ipc(&algo_params, &msg);
if (retval)
break;
algo_params.reserved = 0;
if (copy_from_user(msg->mailbox_data + sizeof(algo_params),
algo_params.params, algo_params.size))
return -EFAULT;
retval = sst_send_algo_ipc(&msg);
if (retval) {
pr_debug("Error in sst_set_algo = %d\n", retval);
retval = -EIO;
}
break;
case _IOC_NR(SNDRV_SST_GET_ALGO):
if (copy_from_user(&algo_params, (void __user *)arg,
sizeof(algo_params)))
return -EFAULT;
pr_debug("Algo ID %d Str id %d Enable %d Size %d\n",
algo_params.algo_id, algo_params.str_id,
algo_params.enable, algo_params.size);
retval = sst_create_algo_ipc(&algo_params, &msg);
if (retval)
break;
algo_params.reserved = 1;
retval = sst_send_algo_ipc(&msg);
if (retval) {
pr_debug("Error in sst_get_algo = %d\n", retval);
retval = -EIO;
break;
}
algo_params_copied = (struct snd_ppp_params *)
sst_drv_ctx->ppp_params_blk.data;
if (algo_params_copied->size > algo_params.size) {
pr_debug("mem insufficient to copy\n");
retval = -EMSGSIZE;
goto free_mem;
} else {
char __user *tmp;
if (copy_to_user(algo_params.params,
algo_params_copied->params,
algo_params_copied->size)) {
retval = -EFAULT;
goto free_mem;
}
tmp = (char __user *)arg + offsetof(
struct snd_ppp_params, size);
if (copy_to_user(tmp, &algo_params_copied->size,
sizeof(__u32))) {
retval = -EFAULT;
goto free_mem;
}
}
free_mem:
kfree(algo_params_copied->params);
kfree(algo_params_copied);
break;
}
return retval;
}
int sst_ioctl_tuning_params(unsigned long arg)
{
struct snd_sst_tuning_params params;
struct ipc_post *msg;
if (copy_from_user(¶ms, (void __user *)arg, sizeof(params)))
return -EFAULT;
if (params.size > SST_MAILBOX_SIZE)
return -ENOMEM;
pr_debug("Parameter %d, Stream %d, Size %d\n", params.type,
params.str_id, params.size);
if (sst_create_large_msg(&msg))
return -ENOMEM;
sst_fill_header(&msg->header, IPC_IA_TUNING_PARAMS, 1, params.str_id);
msg->header.part.data = sizeof(u32) + sizeof(params) + params.size;
memcpy(msg->mailbox_data, &msg->header.full, sizeof(u32));
memcpy(msg->mailbox_data + sizeof(u32), ¶ms, sizeof(params));
if (copy_from_user(msg->mailbox_data + sizeof(params),
(void __user *)(unsigned long)params.addr,
params.size)) {
kfree(msg->mailbox_data);
kfree(msg);
return -EFAULT;
}
return sst_send_algo_ipc(&msg);
}
/**
* intel_sst_ioctl - receives the device ioctl's
* @file_ptr:pointer to file
* @cmd:Ioctl cmd
* @arg:data
*
* This function is called by OS when a user space component
* sends an Ioctl to SST driver
*/
long intel_sst_ioctl(struct file *file_ptr, unsigned int cmd, unsigned long arg)
{
int retval = 0;
struct ioctl_pvt_data *data = NULL;
int str_id = 0, minor = 0;
data = file_ptr->private_data;
if (data) {
minor = 0;
str_id = data->str_id;
} else
minor = 1;
if (sst_drv_ctx->sst_state != SST_FW_RUNNING)
return -EBUSY;
switch (_IOC_NR(cmd)) {
case _IOC_NR(SNDRV_SST_STREAM_PAUSE):
pr_debug("IOCTL_PAUSE received for %d!\n", str_id);
if (minor != STREAM_MODULE) {
retval = -EBADRQC;
break;
}
retval = sst_pause_stream(str_id);
break;
case _IOC_NR(SNDRV_SST_STREAM_RESUME):
pr_debug("SNDRV_SST_IOCTL_RESUME received!\n");
if (minor != STREAM_MODULE) {
retval = -EBADRQC;
break;
}
retval = sst_resume_stream(str_id);
break;
case _IOC_NR(SNDRV_SST_STREAM_SET_PARAMS): {
struct snd_sst_params str_param;
pr_debug("IOCTL_SET_PARAMS received!\n");
if (minor != STREAM_MODULE) {
retval = -EBADRQC;
break;
}
if (copy_from_user(&str_param, (void __user *)arg,
sizeof(str_param))) {
retval = -EFAULT;
break;
}
if (!str_id) {
retval = sst_get_stream(&str_param);
if (retval > 0) {
struct stream_info *str_info;
char __user *dest;
sst_drv_ctx->stream_cnt++;
data->str_id = retval;
str_info = &sst_drv_ctx->streams[retval];
str_info->src = SST_DRV;
dest = (char __user *)arg + offsetof(struct snd_sst_params, stream_id);
retval = copy_to_user(dest, &retval, sizeof(__u32));
if (retval)
retval = -EFAULT;
} else {
if (retval == -SST_ERR_INVALID_PARAMS)
retval = -EINVAL;
}
} else {
pr_debug("SET_STREAM_PARAMS received!\n");
/* allocated set params only */
retval = sst_set_stream_param(str_id, &str_param);
/* Block the call for reply */
if (!retval) {
int sfreq = 0, word_size = 0, num_channel = 0;
sfreq = str_param.sparams.uc.pcm_params.sfreq;
word_size = str_param.sparams.uc.pcm_params.pcm_wd_sz;
num_channel = str_param.sparams.uc.pcm_params.num_chan;
if (str_param.ops == STREAM_OPS_CAPTURE) {
sst_drv_ctx->scard_ops->\
set_pcm_audio_params(sfreq,
word_size, num_channel);
}
}
}
break;
}
case _IOC_NR(SNDRV_SST_SET_VOL): {
struct snd_sst_vol set_vol;
if (copy_from_user(&set_vol, (void __user *)arg,
sizeof(set_vol))) {
pr_debug("copy failed\n");
retval = -EFAULT;
break;
}
pr_debug("SET_VOLUME received for %d!\n",
set_vol.stream_id);
if (minor == STREAM_MODULE && set_vol.stream_id == 0) {
pr_debug("invalid operation!\n");
retval = -EPERM;
break;
}
retval = sst_set_vol(&set_vol);
break;
}
case _IOC_NR(SNDRV_SST_GET_VOL): {
struct snd_sst_vol get_vol;
if (copy_from_user(&get_vol, (void __user *)arg,
sizeof(get_vol))) {
retval = -EFAULT;
break;
}
pr_debug("IOCTL_GET_VOLUME received for stream = %d!\n",
get_vol.stream_id);
if (minor == STREAM_MODULE && get_vol.stream_id == 0) {
pr_debug("invalid operation!\n");
retval = -EPERM;
break;
}
retval = sst_get_vol(&get_vol);
if (retval) {
retval = -EIO;
break;
}
pr_debug("id:%d\n, vol:%d, ramp_dur:%d, ramp_type:%d\n",
get_vol.stream_id, get_vol.volume,
get_vol.ramp_duration, get_vol.ramp_type);
if (copy_to_user((struct snd_sst_vol __user *)arg,
&get_vol, sizeof(get_vol))) {
retval = -EFAULT;
break;
}
/*sst_print_get_vol_info(str_id, &get_vol);*/
break;
}
case _IOC_NR(SNDRV_SST_MUTE): {
struct snd_sst_mute set_mute;
if (copy_from_user(&set_mute, (void __user *)arg,
sizeof(set_mute))) {
retval = -EFAULT;
break;
}
pr_debug("SNDRV_SST_SET_VOLUME received for %d!\n",
set_mute.stream_id);
if (minor == STREAM_MODULE && set_mute.stream_id == 0) {
retval = -EPERM;
break;
}
retval = sst_set_mute(&set_mute);
break;
}
case _IOC_NR(SNDRV_SST_STREAM_GET_PARAMS): {
struct snd_sst_get_stream_params get_params;
pr_debug("IOCTL_GET_PARAMS received!\n");
if (minor != 0) {
retval = -EBADRQC;
break;
}
retval = sst_get_stream_params(str_id, &get_params);
if (retval) {
retval = -EIO;
break;
}
if (copy_to_user((struct snd_sst_get_stream_params __user *)arg,
&get_params, sizeof(get_params))) {
retval = -EFAULT;
break;
}
sst_print_stream_params(&get_params);
break;
}
case _IOC_NR(SNDRV_SST_MMAP_PLAY):
case _IOC_NR(SNDRV_SST_MMAP_CAPTURE): {
struct snd_sst_mmap_buffs mmap_buf;
pr_debug("SNDRV_SST_MMAP_PLAY/CAPTURE received!\n");
if (minor != STREAM_MODULE) {
retval = -EBADRQC;
break;
}
if (copy_from_user(&mmap_buf, (void __user *)arg,
sizeof(mmap_buf))) {
retval = -EFAULT;
break;
}
retval = intel_sst_mmap_play_capture(str_id, &mmap_buf);
break;
}
case _IOC_NR(SNDRV_SST_STREAM_DROP):
pr_debug("SNDRV_SST_IOCTL_DROP received!\n");
if (minor != STREAM_MODULE) {
retval = -EINVAL;
break;
}
retval = sst_drop_stream(str_id);
break;
case _IOC_NR(SNDRV_SST_STREAM_GET_TSTAMP): {
struct snd_sst_tstamp tstamp = {0};
unsigned long long time, freq, mod;
pr_debug("SNDRV_SST_STREAM_GET_TSTAMP received!\n");
if (minor != STREAM_MODULE) {
retval = -EBADRQC;
break;
}
memcpy_fromio(&tstamp,
sst_drv_ctx->mailbox + SST_TIME_STAMP + str_id * sizeof(tstamp),
sizeof(tstamp));
time = tstamp.samples_rendered;
freq = (unsigned long long) tstamp.sampling_frequency;
time = time * 1000; /* converting it to ms */
mod = do_div(time, freq);
if (copy_to_user((void __user *)arg, &time,
sizeof(unsigned long long)))
retval = -EFAULT;
break;
}
case _IOC_NR(SNDRV_SST_STREAM_START):{
struct stream_info *stream;
pr_debug("SNDRV_SST_STREAM_START received!\n");
if (minor != STREAM_MODULE) {
retval = -EINVAL;
break;
}
retval = sst_validate_strid(str_id);
if (retval)
break;
stream = &sst_drv_ctx->streams[str_id];
mutex_lock(&stream->lock);
if (stream->status == STREAM_INIT &&
stream->need_draining != true) {
stream->prev = stream->status;
stream->status = STREAM_RUNNING;
if (stream->ops == STREAM_OPS_PLAYBACK ||
stream->ops == STREAM_OPS_PLAYBACK_DRM) {
retval = sst_play_frame(str_id);
} else if (stream->ops == STREAM_OPS_CAPTURE)
retval = sst_capture_frame(str_id);
else {
retval = -EINVAL;
mutex_unlock(&stream->lock);
break;
}
if (retval < 0) {
stream->status = STREAM_INIT;
mutex_unlock(&stream->lock);
break;
}
} else {
retval = -EINVAL;
}
mutex_unlock(&stream->lock);
break;
}
case _IOC_NR(SNDRV_SST_SET_TARGET_DEVICE): {
struct snd_sst_target_device target_device;
pr_debug("SET_TARGET_DEVICE received!\n");
if (copy_from_user(&target_device, (void __user *)arg,
sizeof(target_device))) {
retval = -EFAULT;
break;
}
if (minor != AM_MODULE) {
retval = -EBADRQC;
break;
}
retval = sst_target_device_select(&target_device);
break;
}
case _IOC_NR(SNDRV_SST_DRIVER_INFO): {
struct snd_sst_driver_info info;
pr_debug("SNDRV_SST_DRIVER_INFO received\n");
info.version = SST_VERSION_NUM;
/* hard coding, shud get sumhow later */
info.active_pcm_streams = sst_drv_ctx->stream_cnt -
sst_drv_ctx->encoded_cnt;
info.active_enc_streams = sst_drv_ctx->encoded_cnt;
info.max_pcm_streams = MAX_ACTIVE_STREAM - MAX_ENC_STREAM;
info.max_enc_streams = MAX_ENC_STREAM;
info.buf_per_stream = sst_drv_ctx->mmap_len;
if (copy_to_user((void __user *)arg, &info,
sizeof(info)))
retval = -EFAULT;
break;
}
case _IOC_NR(SNDRV_SST_STREAM_DECODE): {
struct snd_sst_dbufs param;
struct snd_sst_dbufs dbufs_local;
struct snd_sst_buffs ibufs, obufs;
struct snd_sst_buff_entry *ibuf_tmp, *obuf_tmp;
char __user *dest;
pr_debug("SNDRV_SST_STREAM_DECODE received\n");
if (minor != STREAM_MODULE) {
retval = -EBADRQC;
break;
}
if (copy_from_user(¶m, (void __user *)arg,
sizeof(param))) {
retval = -EFAULT;
break;
}
dbufs_local.input_bytes_consumed = param.input_bytes_consumed;
dbufs_local.output_bytes_produced =
param.output_bytes_produced;
if (copy_from_user(&ibufs, (void __user *)param.ibufs, sizeof(ibufs))) {
retval = -EFAULT;
break;
}
if (copy_from_user(&obufs, (void __user *)param.obufs, sizeof(obufs))) {
retval = -EFAULT;
break;
}
ibuf_tmp = kcalloc(ibufs.entries, sizeof(*ibuf_tmp), GFP_KERNEL);
obuf_tmp = kcalloc(obufs.entries, sizeof(*obuf_tmp), GFP_KERNEL);
if (!ibuf_tmp || !obuf_tmp) {
retval = -ENOMEM;
goto free_iobufs;
}
if (copy_from_user(ibuf_tmp, (void __user *)ibufs.buff_entry,
ibufs.entries * sizeof(*ibuf_tmp))) {
retval = -EFAULT;
goto free_iobufs;
}
ibufs.buff_entry = ibuf_tmp;
dbufs_local.ibufs = &ibufs;
if (copy_from_user(obuf_tmp, (void __user *)obufs.buff_entry,
obufs.entries * sizeof(*obuf_tmp))) {
retval = -EFAULT;
goto free_iobufs;
}
obufs.buff_entry = obuf_tmp;
dbufs_local.obufs = &obufs;
retval = sst_decode(str_id, &dbufs_local);
if (retval) {
retval = -EAGAIN;
goto free_iobufs;
}
dest = (char __user *)arg + offsetof(struct snd_sst_dbufs, input_bytes_consumed);
if (copy_to_user(dest,
&dbufs_local.input_bytes_consumed,
sizeof(unsigned long long))) {
retval = -EFAULT;
goto free_iobufs;
}
dest = (char __user *)arg + offsetof(struct snd_sst_dbufs, input_bytes_consumed);
if (copy_to_user(dest,
&dbufs_local.output_bytes_produced,
sizeof(unsigned long long))) {
retval = -EFAULT;
goto free_iobufs;
}
free_iobufs:
kfree(ibuf_tmp);
kfree(obuf_tmp);
break;
}
case _IOC_NR(SNDRV_SST_STREAM_DRAIN):
pr_debug("SNDRV_SST_STREAM_DRAIN received\n");
if (minor != STREAM_MODULE) {
retval = -EINVAL;
break;
}
retval = sst_drain_stream(str_id);
break;
case _IOC_NR(SNDRV_SST_STREAM_BYTES_DECODED): {
unsigned long long __user *bytes = (unsigned long long __user *)arg;
struct snd_sst_tstamp tstamp = {0};
pr_debug("STREAM_BYTES_DECODED received!\n");
if (minor != STREAM_MODULE) {
retval = -EINVAL;
break;
}
memcpy_fromio(&tstamp,
sst_drv_ctx->mailbox + SST_TIME_STAMP + str_id * sizeof(tstamp),
sizeof(tstamp));
if (copy_to_user(bytes, &tstamp.bytes_processed,
sizeof(*bytes)))
retval = -EFAULT;
break;
}
case _IOC_NR(SNDRV_SST_FW_INFO): {
struct snd_sst_fw_info *fw_info;
pr_debug("SNDRV_SST_FW_INFO received\n");
fw_info = kzalloc(sizeof(*fw_info), GFP_ATOMIC);
if (!fw_info) {
retval = -ENOMEM;
break;
}
retval = sst_get_fw_info(fw_info);
if (retval) {
retval = -EIO;
kfree(fw_info);
break;
}
if (copy_to_user((struct snd_sst_dbufs __user *)arg,
fw_info, sizeof(*fw_info))) {
kfree(fw_info);
retval = -EFAULT;
break;
}
/*sst_print_fw_info(fw_info);*/
kfree(fw_info);
break;
}
case _IOC_NR(SNDRV_SST_GET_ALGO):
case _IOC_NR(SNDRV_SST_SET_ALGO):
if (minor != AM_MODULE) {
retval = -EBADRQC;
break;
}
retval = intel_sst_ioctl_dsp(cmd, arg);
break;
case _IOC_NR(SNDRV_SST_TUNING_PARAMS):
if (minor != AM_MODULE) {
retval = -EBADRQC;
break;
}
retval = sst_ioctl_tuning_params(arg);
break;
default:
retval = -EINVAL;
}
pr_debug("intel_sst_ioctl:complete ret code = %d\n", retval);
return retval;
}
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