// SPDX-License-Identifier: GPL-2.0-only
/*
* sst_pvt.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/kobject.h>
#include <linux/pci.h>
#include <linux/fs.h>
#include <linux/firmware.h>
#include <linux/pm_runtime.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <sound/asound.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_shim_write(void __iomem *addr, int offset, int value)
{
writel(value, addr + offset);
return 0;
}
u32 sst_shim_read(void __iomem *addr, int offset)
{
return readl(addr + offset);
}
u64 sst_reg_read64(void __iomem *addr, int offset)
{
u64 val = 0;
memcpy_fromio(&val, addr + offset, sizeof(val));
return val;
}
int sst_shim_write64(void __iomem *addr, int offset, u64 value)
{
memcpy_toio(addr + offset, &value, sizeof(value));
return 0;
}
u64 sst_shim_read64(void __iomem *addr, int offset)
{
u64 val = 0;
memcpy_fromio(&val, addr + offset, sizeof(val));
return val;
}
void sst_set_fw_state_locked(
struct intel_sst_drv *sst_drv_ctx, int sst_state)
{
mutex_lock(&sst_drv_ctx->sst_lock);
sst_drv_ctx->sst_state = sst_state;
mutex_unlock(&sst_drv_ctx->sst_lock);
}
/*
* sst_wait_interruptible - wait on event
*
* @sst_drv_ctx: Driver context
* @block: Driver block to wait on
*
* This function waits without a timeout (and is interruptable) for a
* given block event
*/
int sst_wait_interruptible(struct intel_sst_drv *sst_drv_ctx,
struct sst_block *block)
{
int retval = 0;
if (!wait_event_interruptible(sst_drv_ctx->wait_queue,
block->condition)) {
/* event wake */
if (block->ret_code < 0) {
dev_err(sst_drv_ctx->dev,
"stream failed %d\n", block->ret_code);
retval = -EBUSY;
} else {
dev_dbg(sst_drv_ctx->dev, "event up\n");
retval = 0;
}
} else {
dev_err(sst_drv_ctx->dev, "signal interrupted\n");
retval = -EINTR;
}
return retval;
}
/*
* sst_wait_timeout - wait on event for timeout
*
* @sst_drv_ctx: Driver context
* @block: Driver block to wait on
*
* This function waits with a timeout value (and is not interruptible) on a
* given block event
*/
int sst_wait_timeout(struct intel_sst_drv *sst_drv_ctx, struct sst_block *block)
{
int retval = 0;
/*
* NOTE:
* Observed that FW processes the alloc msg and replies even
* before the alloc thread has finished execution
*/
dev_dbg(sst_drv_ctx->dev,
"waiting for condition %x ipc %d drv_id %d\n",
block->condition, block->msg_id, block->drv_id);
if (wait_event_timeout(sst_drv_ctx->wait_queue,
block->condition,
msecs_to_jiffies(SST_BLOCK_TIMEOUT))) {
/* event wake */
dev_dbg(sst_drv_ctx->dev, "Event wake %x\n",
block->condition);
dev_dbg(sst_drv_ctx->dev, "message ret: %d\n",
block->ret_code);
retval = -block->ret_code;
} else {
block->on = false;
dev_err(sst_drv_ctx->dev,
"Wait timed-out condition:%#x, msg_id:%#x fw_state %#x\n",
block->condition, block->msg_id, sst_drv_ctx->sst_state);
sst_drv_ctx->sst_state = SST_RESET;
retval = -EBUSY;
}
return retval;
}
/*
* sst_create_ipc_msg - create a IPC message
*
* @arg: ipc message
* @large: large or short message
*
* this function allocates structures to send a large or short
* message to the firmware
*/
int sst_create_ipc_msg(struct ipc_post **arg, bool large)
{
struct ipc_post *msg;
msg = kzalloc(sizeof(*msg), GFP_ATOMIC);
if (!msg)
return -ENOMEM;
if (large) {
msg->mailbox_data = kzalloc(SST_MAILBOX_SIZE, GFP_ATOMIC);
if (!msg->mailbox_data) {
kfree(msg);
return -ENOMEM;
}
} else {
msg->mailbox_data = NULL;
}
msg->is_large = large;
*arg = msg;
return 0;
}
/*
* sst_create_block_and_ipc_msg - Creates IPC message and sst block
* @arg: passed to sst_create_ipc_message API
* @large: large or short message
* @sst_drv_ctx: sst driver context
* @block: return block allocated
* @msg_id: IPC
* @drv_id: stream id or private id
*/
int sst_create_block_and_ipc_msg(struct ipc_post **arg, bool large,
struct intel_sst_drv *sst_drv_ctx, struct sst_block **block,
u32 msg_id, u32 drv_id)
{
int retval;
retval = sst_create_ipc_msg(arg, large);
if (retval)
return retval;
*block = sst_create_block(sst_drv_ctx, msg_id, drv_id);
if (*block == NULL) {
kfree(*arg);
return -ENOMEM;
}
return 0;
}
/*
* sst_clean_stream - clean the stream context
*
* @stream: stream structure
*
* this function resets the stream contexts
* should be called in free
*/
void sst_clean_stream(struct stream_info *stream)
{
stream->status = STREAM_UN_INIT;
stream->prev = STREAM_UN_INIT;
mutex_lock(&stream->lock);
stream->cumm_bytes = 0;
mutex_unlock(&stream->lock);
}
int sst_prepare_and_post_msg(struct intel_sst_drv *sst,
int task_id, int ipc_msg, int cmd_id, int pipe_id,
size_t mbox_data_len, const void *mbox_data, void **data,
bool large, bool fill_dsp, bool sync, bool response)
{
struct sst_block *block = NULL;
struct ipc_post *msg = NULL;
struct ipc_dsp_hdr dsp_hdr;
int ret = 0, pvt_id;
pvt_id = sst_assign_pvt_id(sst);
if (pvt_id < 0)
return pvt_id;
if (response)
ret = sst_create_block_and_ipc_msg(
&msg, large, sst, &block, ipc_msg, pvt_id);
else
ret = sst_create_ipc_msg(&msg, large);
if (ret < 0) {
test_and_clear_bit(pvt_id, &sst->pvt_id);
return -ENOMEM;
}
dev_dbg(sst->dev, "pvt_id = %d, pipe id = %d, task = %d ipc_msg: %d\n",
pvt_id, pipe_id, task_id, ipc_msg);
sst_fill_header_mrfld(&msg->mrfld_header, ipc_msg,
task_id, large, pvt_id);
msg->mrfld_header.p.header_low_payload = sizeof(dsp_hdr) + mbox_data_len;
msg->mrfld_header.p.header_high.part.res_rqd = !sync;
dev_dbg(sst->dev, "header:%x\n",
msg->mrfld_header.p.header_high.full);
dev_dbg(sst->dev, "response rqd: %x",
msg->mrfld_header.p.header_high.part.res_rqd);
dev_dbg(sst->dev, "msg->mrfld_header.p.header_low_payload:%d",
msg->mrfld_header.p.header_low_payload);
if (fill_dsp) {
sst_fill_header_dsp(&dsp_hdr, cmd_id, pipe_id, mbox_data_len);
memcpy(msg->mailbox_data, &dsp_hdr, sizeof(dsp_hdr));
if (mbox_data_len) {
memcpy(msg->mailbox_data + sizeof(dsp_hdr),
mbox_data, mbox_data_len);
}
}
if (sync)
sst->ops->post_message(sst, msg, true);
else
sst_add_to_dispatch_list_and_post(sst, msg);
if (response) {
ret = sst_wait_timeout(sst, block);
if (ret < 0)
goto out;
if (data && block->data) {
*data = kmemdup(block->data, block->size, GFP_KERNEL);
if (!*data) {
ret = -ENOMEM;
goto out;
}
}
}
out:
if (response)
sst_free_block(sst, block);
test_and_clear_bit(pvt_id, &sst->pvt_id);
return ret;
}
int sst_pm_runtime_put(struct intel_sst_drv *sst_drv)
{
int ret;
pm_runtime_mark_last_busy(sst_drv->dev);
ret = pm_runtime_put_autosuspend(sst_drv->dev);
if (ret < 0)
return ret;
return 0;
}
void sst_fill_header_mrfld(union ipc_header_mrfld *header,
int msg, int task_id, int large, int drv_id)
{
header->full = 0;
header->p.header_high.part.msg_id = msg;
header->p.header_high.part.task_id = task_id;
header->p.header_high.part.large = large;
header->p.header_high.part.drv_id = drv_id;
header->p.header_high.part.done = 0;
header->p.header_high.part.busy = 1;
header->p.header_high.part.res_rqd = 1;
}
void sst_fill_header_dsp(struct ipc_dsp_hdr *dsp, int msg,
int pipe_id, int len)
{
dsp->cmd_id = msg;
dsp->mod_index_id = 0xff;
dsp->pipe_id = pipe_id;
dsp->length = len;
dsp->mod_id = 0;
}
#define SST_MAX_BLOCKS 15
/*
* sst_assign_pvt_id - assign a pvt id for stream
*
* @sst_drv_ctx : driver context
*
* this function assigns a private id for calls that dont have stream
* context yet, should be called with lock held
* uses bits for the id, and finds first free bits and assigns that
*/
int sst_assign_pvt_id(struct intel_sst_drv *drv)
{
int local;
spin_lock(&drv->block_lock);
/* find first zero index from lsb */
local = ffz(drv->pvt_id);
dev_dbg(drv->dev, "pvt_id assigned --> %d\n", local);
if (local >= SST_MAX_BLOCKS){
spin_unlock(&drv->block_lock);
dev_err(drv->dev, "PVT _ID error: no free id blocks ");
return -EINVAL;
}
/* toggle the index */
change_bit(local, &drv->pvt_id);
spin_unlock(&drv->block_lock);
return local;
}
int sst_validate_strid(
struct intel_sst_drv *sst_drv_ctx, int str_id)
{
if (str_id <= 0 || str_id > sst_drv_ctx->info.max_streams) {
dev_err(sst_drv_ctx->dev,
"SST ERR: invalid stream id : %d, max %d\n",
str_id, sst_drv_ctx->info.max_streams);
return -EINVAL;
}
return 0;
}
struct stream_info *get_stream_info(
struct intel_sst_drv *sst_drv_ctx, int str_id)
{
if (sst_validate_strid(sst_drv_ctx, str_id))
return NULL;
return &sst_drv_ctx->streams[str_id];
}
int get_stream_id_mrfld(struct intel_sst_drv *sst_drv_ctx,
u32 pipe_id)
{
int i;
for (i = 1; i <= sst_drv_ctx->info.max_streams; i++)
if (pipe_id == sst_drv_ctx->streams[i].pipe_id)
return i;
dev_dbg(sst_drv_ctx->dev, "no such pipe_id(%u)", pipe_id);
return -1;
}
u32 relocate_imr_addr_mrfld(u32 base_addr)
{
/* Get the difference from 512MB aligned base addr */
/* relocate the base */
base_addr = MRFLD_FW_VIRTUAL_BASE + (base_addr % (512 * 1024 * 1024));
return base_addr;
}
EXPORT_SYMBOL_GPL(relocate_imr_addr_mrfld);
void sst_add_to_dispatch_list_and_post(struct intel_sst_drv *sst,
struct ipc_post *msg)
{
unsigned long irq_flags;
spin_lock_irqsave(&sst->ipc_spin_lock, irq_flags);
list_add_tail(&msg->node, &sst->ipc_dispatch_list);
spin_unlock_irqrestore(&sst->ipc_spin_lock, irq_flags);
sst->ops->post_message(sst, NULL, false);
}
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