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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license. When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2022 MediaTek Inc. All rights reserved.
//
// Author: YC Hung <yc.hung@mediatek.com>
/*
* Common helpers for the audio DSP on MediaTek platforms
*/
#include <linux/module.h>
#include <sound/asound.h>
#include <sound/sof/xtensa.h>
#include "../ops.h"
#include "../sof-audio.h"
#include "adsp_helper.h"
#include "mtk-adsp-common.h"
/**
* mtk_adsp_get_registers() - This function is called in case of DSP oops
* in order to gather information about the registers, filename and
* linenumber and stack.
* @sdev: SOF device
* @xoops: Stores information about registers.
* @panic_info: Stores information about filename and line number.
* @stack: Stores the stack dump.
* @stack_words: Size of the stack dump.
*/
static void mtk_adsp_get_registers(struct snd_sof_dev *sdev,
struct sof_ipc_dsp_oops_xtensa *xoops,
struct sof_ipc_panic_info *panic_info,
u32 *stack, size_t stack_words)
{
u32 offset = sdev->dsp_oops_offset;
/* first read registers */
sof_mailbox_read(sdev, offset, xoops, sizeof(*xoops));
/* then get panic info */
if (xoops->arch_hdr.totalsize > EXCEPT_MAX_HDR_SIZE) {
dev_err(sdev->dev, "invalid header size 0x%x\n",
xoops->arch_hdr.totalsize);
return;
}
offset += xoops->arch_hdr.totalsize;
sof_mailbox_read(sdev, offset, panic_info, sizeof(*panic_info));
/* then get the stack */
offset += sizeof(*panic_info);
sof_mailbox_read(sdev, offset, stack, stack_words * sizeof(u32));
}
/**
* mtk_adsp_dump() - This function is called when a panic message is
* received from the firmware.
* @sdev: SOF device
* @flags: parameter not used but required by ops prototype
*/
void mtk_adsp_dump(struct snd_sof_dev *sdev, u32 flags)
{
char *level = (flags & SOF_DBG_DUMP_OPTIONAL) ? KERN_DEBUG : KERN_ERR;
struct sof_ipc_dsp_oops_xtensa xoops;
struct sof_ipc_panic_info panic_info = {};
u32 stack[MTK_ADSP_STACK_DUMP_SIZE];
u32 status;
/* Get information about the panic status from the debug box area.
* Compute the trace point based on the status.
*/
sof_mailbox_read(sdev, sdev->debug_box.offset + 0x4, &status, 4);
/* Get information about the registers, the filename and line
* number and the stack.
*/
mtk_adsp_get_registers(sdev, &xoops, &panic_info, stack,
MTK_ADSP_STACK_DUMP_SIZE);
/* Print the information to the console */
sof_print_oops_and_stack(sdev, level, status, status, &xoops, &panic_info,
stack, MTK_ADSP_STACK_DUMP_SIZE);
}
EXPORT_SYMBOL(mtk_adsp_dump);
/**
* mtk_adsp_send_msg - Send message to Audio DSP
* @sdev: SOF device
* @msg: SOF IPC Message to send
*/
int mtk_adsp_send_msg(struct snd_sof_dev *sdev, struct snd_sof_ipc_msg *msg)
{
struct adsp_priv *priv = sdev->pdata->hw_pdata;
sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,
msg->msg_size);
return mtk_adsp_ipc_send(priv->dsp_ipc, MTK_ADSP_IPC_REQ, MTK_ADSP_IPC_OP_REQ);
}
EXPORT_SYMBOL(mtk_adsp_send_msg);
/**
* mtk_adsp_handle_reply - Handle reply from the Audio DSP through Mailbox
* @ipc: ADSP IPC handle
*/
void mtk_adsp_handle_reply(struct mtk_adsp_ipc *ipc)
{
struct adsp_priv *priv = mtk_adsp_ipc_get_data(ipc);
unsigned long flags;
spin_lock_irqsave(&priv->sdev->ipc_lock, flags);
snd_sof_ipc_process_reply(priv->sdev, 0);
spin_unlock_irqrestore(&priv->sdev->ipc_lock, flags);
}
EXPORT_SYMBOL(mtk_adsp_handle_reply);
/**
* mtk_adsp_handle_request - Handle request from the Audio DSP through Mailbox
* @ipc: ADSP IPC handle
*/
void mtk_adsp_handle_request(struct mtk_adsp_ipc *ipc)
{
struct adsp_priv *priv = mtk_adsp_ipc_get_data(ipc);
u32 panic_code;
int ret;
/* Read the message from the debug box. */
sof_mailbox_read(priv->sdev, priv->sdev->debug_box.offset + 4,
&panic_code, sizeof(panic_code));
/* Check to see if the message is a panic code 0x0dead*** */
if ((panic_code & SOF_IPC_PANIC_MAGIC_MASK) == SOF_IPC_PANIC_MAGIC) {
snd_sof_dsp_panic(priv->sdev, panic_code, true);
} else {
snd_sof_ipc_msgs_rx(priv->sdev);
/* Tell DSP cmd is done */
ret = mtk_adsp_ipc_send(priv->dsp_ipc, MTK_ADSP_IPC_RSP, MTK_ADSP_IPC_OP_RSP);
if (ret)
dev_err(priv->dev, "request send ipc failed");
}
}
EXPORT_SYMBOL(mtk_adsp_handle_request);
/**
* mtk_adsp_get_bar_index - Map section type with BAR idx
* @sdev: SOF device
* @type: Section type as described by snd_sof_fw_blk_type
*
* MediaTek Audio DSPs have a 1:1 match between type and BAR idx
*/
int mtk_adsp_get_bar_index(struct snd_sof_dev *sdev, u32 type)
{
return type;
}
EXPORT_SYMBOL(mtk_adsp_get_bar_index);
/**
* mtk_adsp_stream_pcm_hw_params - Platform specific host stream hw params
* @sdev: SOF device
* @substream: PCM Substream
* @params: hw params
* @platform_params: Platform specific SOF stream parameters
*/
int mtk_adsp_stream_pcm_hw_params(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_sof_platform_stream_params *platform_params)
{
platform_params->cont_update_posn = 1;
return 0;
}
EXPORT_SYMBOL(mtk_adsp_stream_pcm_hw_params);
/**
* mtk_adsp_stream_pcm_pointer - Get host stream pointer
* @sdev: SOF device
* @substream: PCM substream
*/
snd_pcm_uframes_t mtk_adsp_stream_pcm_pointer(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
struct snd_soc_component *scomp = sdev->component;
struct snd_sof_pcm_stream *stream;
struct sof_ipc_stream_posn posn;
struct snd_sof_pcm *spcm;
snd_pcm_uframes_t pos;
int ret;
spcm = snd_sof_find_spcm_dai(scomp, rtd);
if (!spcm) {
dev_warn_ratelimited(sdev->dev, "warn: can't find PCM with DAI ID %d\n",
rtd->dai_link->id);
return 0;
}
stream = &spcm->stream[substream->stream];
ret = snd_sof_ipc_msg_data(sdev, stream, &posn, sizeof(posn));
if (ret < 0) {
dev_warn(sdev->dev, "failed to read stream position: %d\n", ret);
return 0;
}
memcpy(&stream->posn, &posn, sizeof(posn));
pos = spcm->stream[substream->stream].posn.host_posn;
pos = bytes_to_frames(substream->runtime, pos);
return pos;
}
EXPORT_SYMBOL(mtk_adsp_stream_pcm_pointer);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("SOF helpers for MTK ADSP platforms");
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