blob: 8826ef94f04a33ed56ce2bfd40417d1bf702b1f6 [file] [log] [blame]
Iulian Olaru18ebffe2020-09-17 13:56:26 +03001// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
2//
3// Copyright 2020 NXP
4//
5// Common helpers for the audio DSP on i.MX8
6
Kai Vehmanen5b51b922020-09-21 13:47:46 +03007#include <linux/module.h>
Iulian Olaru18ebffe2020-09-17 13:56:26 +03008#include <sound/sof/xtensa.h>
9#include "../ops.h"
10
11#include "imx-common.h"
12
13/**
14 * imx8_get_registers() - This function is called in case of DSP oops
15 * in order to gather information about the registers, filename and
16 * linenumber and stack.
17 * @sdev: SOF device
18 * @xoops: Stores information about registers.
19 * @panic_info: Stores information about filename and line number.
20 * @stack: Stores the stack dump.
21 * @stack_words: Size of the stack dump.
22 */
23void imx8_get_registers(struct snd_sof_dev *sdev,
24 struct sof_ipc_dsp_oops_xtensa *xoops,
25 struct sof_ipc_panic_info *panic_info,
26 u32 *stack, size_t stack_words)
27{
28 u32 offset = sdev->dsp_oops_offset;
29
30 /* first read registers */
31 sof_mailbox_read(sdev, offset, xoops, sizeof(*xoops));
32
33 /* then get panic info */
34 if (xoops->arch_hdr.totalsize > EXCEPT_MAX_HDR_SIZE) {
35 dev_err(sdev->dev, "invalid header size 0x%x. FW oops is bogus\n",
36 xoops->arch_hdr.totalsize);
37 return;
38 }
39 offset += xoops->arch_hdr.totalsize;
40 sof_mailbox_read(sdev, offset, panic_info, sizeof(*panic_info));
41
42 /* then get the stack */
43 offset += sizeof(*panic_info);
44 sof_mailbox_read(sdev, offset, stack, stack_words * sizeof(u32));
45}
46
47/**
48 * imx8_dump() - This function is called when a panic message is
49 * received from the firmware.
Pierre-Louis Bossart45c29d92020-12-11 12:22:55 +020050 * @sdev: SOF device
51 * @flags: parameter not used but required by ops prototype
Iulian Olaru18ebffe2020-09-17 13:56:26 +030052 */
53void imx8_dump(struct snd_sof_dev *sdev, u32 flags)
54{
55 struct sof_ipc_dsp_oops_xtensa xoops;
56 struct sof_ipc_panic_info panic_info;
57 u32 stack[IMX8_STACK_DUMP_SIZE];
58 u32 status;
59
60 /* Get information about the panic status from the debug box area.
61 * Compute the trace point based on the status.
62 */
63 sof_mailbox_read(sdev, sdev->debug_box.offset + 0x4, &status, 4);
64
65 /* Get information about the registers, the filename and line
66 * number and the stack.
67 */
68 imx8_get_registers(sdev, &xoops, &panic_info, stack,
69 IMX8_STACK_DUMP_SIZE);
70
71 /* Print the information to the console */
72 snd_sof_get_status(sdev, status, status, &xoops, &panic_info, stack,
73 IMX8_STACK_DUMP_SIZE);
74}
75EXPORT_SYMBOL(imx8_dump);
Kai Vehmanen5b51b922020-09-21 13:47:46 +030076
77MODULE_LICENSE("Dual BSD/GPL");