From: YC Hung yc.hung@mediatek.com
1.Add mtk-adsp-common.c file for mediatek platforms common usage. 2.Add mtk_adsp_dump implementation in mtk-adsp-common.c for general debug dump.
Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Signed-off-by: YC Hung yc.hung@mediatek.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- sound/soc/sof/mediatek/Makefile | 1 + sound/soc/sof/mediatek/mtk-adsp-common.c | 84 ++++++++++++++++++++++++ sound/soc/sof/mediatek/mtk-adsp-common.h | 10 +++ 3 files changed, 95 insertions(+) create mode 100644 sound/soc/sof/mediatek/mtk-adsp-common.c create mode 100644 sound/soc/sof/mediatek/mtk-adsp-common.h
diff --git a/sound/soc/sof/mediatek/Makefile b/sound/soc/sof/mediatek/Makefile index 6ca8b8201ed1a..29c5afb2f3d6f 100644 --- a/sound/soc/sof/mediatek/Makefile +++ b/sound/soc/sof/mediatek/Makefile @@ -1,3 +1,4 @@ # SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) +obj-$(CONFIG_SND_SOC_SOF_MTK_COMMON) += mtk-adsp-common.o obj-$(CONFIG_SND_SOC_SOF_MT8195) += mt8195/ obj-$(CONFIG_SND_SOC_SOF_MT8186) += mt8186/ diff --git a/sound/soc/sof/mediatek/mtk-adsp-common.c b/sound/soc/sof/mediatek/mtk-adsp-common.c new file mode 100644 index 0000000000000..1e0769c668a7b --- /dev/null +++ b/sound/soc/sof/mediatek/mtk-adsp-common.c @@ -0,0 +1,84 @@ +// 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/sof/xtensa.h> +#include "../ops.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); + +MODULE_LICENSE("Dual BSD/GPL"); diff --git a/sound/soc/sof/mediatek/mtk-adsp-common.h b/sound/soc/sof/mediatek/mtk-adsp-common.h new file mode 100644 index 0000000000000..612cff1f38f70 --- /dev/null +++ b/sound/soc/sof/mediatek/mtk-adsp-common.h @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ + +#ifndef __MEDIATEK_ADSP_COMMON_H__ +#define __MEDIATEK_ADSP_COMMON_H__ + +#define EXCEPT_MAX_HDR_SIZE 0x400 +#define MTK_ADSP_STACK_DUMP_SIZE 32 + +void mtk_adsp_dump(struct snd_sof_dev *sdev, u32 flags); +#endif