85 lines
2.6 KiB
C
85 lines
2.6 KiB
C
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
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//
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// This file is provided under a dual BSD/GPLv2 license. When using or
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// redistributing this file, you may do so under either license.
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//
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// Copyright(c) 2022 MediaTek Inc. All rights reserved.
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//
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// Author: YC Hung <yc.hung@mediatek.com>
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/*
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* Common helpers for the audio DSP on MediaTek platforms
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*/
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#include <linux/module.h>
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#include <sound/sof/xtensa.h>
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#include "../ops.h"
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#include "mtk-adsp-common.h"
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/**
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* mtk_adsp_get_registers() - This function is called in case of DSP oops
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* in order to gather information about the registers, filename and
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* linenumber and stack.
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* @sdev: SOF device
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* @xoops: Stores information about registers.
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* @panic_info: Stores information about filename and line number.
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* @stack: Stores the stack dump.
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* @stack_words: Size of the stack dump.
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*/
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static void mtk_adsp_get_registers(struct snd_sof_dev *sdev,
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struct sof_ipc_dsp_oops_xtensa *xoops,
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struct sof_ipc_panic_info *panic_info,
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u32 *stack, size_t stack_words)
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{
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u32 offset = sdev->dsp_oops_offset;
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/* first read registers */
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sof_mailbox_read(sdev, offset, xoops, sizeof(*xoops));
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/* then get panic info */
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if (xoops->arch_hdr.totalsize > EXCEPT_MAX_HDR_SIZE) {
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dev_err(sdev->dev, "invalid header size 0x%x\n",
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xoops->arch_hdr.totalsize);
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return;
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}
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offset += xoops->arch_hdr.totalsize;
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sof_mailbox_read(sdev, offset, panic_info, sizeof(*panic_info));
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/* then get the stack */
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offset += sizeof(*panic_info);
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sof_mailbox_read(sdev, offset, stack, stack_words * sizeof(u32));
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}
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/**
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* mtk_adsp_dump() - This function is called when a panic message is
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* received from the firmware.
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* @sdev: SOF device
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* @flags: parameter not used but required by ops prototype
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*/
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void mtk_adsp_dump(struct snd_sof_dev *sdev, u32 flags)
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{
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char *level = (flags & SOF_DBG_DUMP_OPTIONAL) ? KERN_DEBUG : KERN_ERR;
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struct sof_ipc_dsp_oops_xtensa xoops;
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struct sof_ipc_panic_info panic_info = {};
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u32 stack[MTK_ADSP_STACK_DUMP_SIZE];
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u32 status;
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/* Get information about the panic status from the debug box area.
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* Compute the trace point based on the status.
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*/
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sof_mailbox_read(sdev, sdev->debug_box.offset + 0x4, &status, 4);
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/* Get information about the registers, the filename and line
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* number and the stack.
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*/
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mtk_adsp_get_registers(sdev, &xoops, &panic_info, stack,
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MTK_ADSP_STACK_DUMP_SIZE);
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/* Print the information to the console */
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sof_print_oops_and_stack(sdev, level, status, status, &xoops, &panic_info,
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stack, MTK_ADSP_STACK_DUMP_SIZE);
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}
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EXPORT_SYMBOL(mtk_adsp_dump);
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MODULE_LICENSE("Dual BSD/GPL");
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