102 lines
2.9 KiB
C
102 lines
2.9 KiB
C
|
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
|
||
|
|
//
|
||
|
|
// Copyright 2020 NXP
|
||
|
|
//
|
||
|
|
// Common helpers for the audio DSP on i.MX8
|
||
|
|
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <sound/sof/xtensa.h>
|
||
|
|
#include "../ops.h"
|
||
|
|
|
||
|
|
#include "imx-common.h"
|
||
|
|
|
||
|
|
/**
|
||
|
|
* imx8_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.
|
||
|
|
*/
|
||
|
|
void imx8_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. FW oops is bogus\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));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* imx8_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 imx8_dump(struct snd_sof_dev *sdev, u32 flags)
|
||
|
|
{
|
||
|
|
struct sof_ipc_dsp_oops_xtensa xoops;
|
||
|
|
struct sof_ipc_panic_info panic_info;
|
||
|
|
u32 stack[IMX8_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.
|
||
|
|
*/
|
||
|
|
imx8_get_registers(sdev, &xoops, &panic_info, stack,
|
||
|
|
IMX8_STACK_DUMP_SIZE);
|
||
|
|
|
||
|
|
/* Print the information to the console */
|
||
|
|
sof_print_oops_and_stack(sdev, KERN_ERR, status, status, &xoops,
|
||
|
|
&panic_info, stack, IMX8_STACK_DUMP_SIZE);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(imx8_dump);
|
||
|
|
|
||
|
|
int imx8_parse_clocks(struct snd_sof_dev *sdev, struct imx_clocks *clks)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ret = devm_clk_bulk_get(sdev->dev, clks->num_dsp_clks, clks->dsp_clks);
|
||
|
|
if (ret)
|
||
|
|
dev_err(sdev->dev, "Failed to request DSP clocks\n");
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(imx8_parse_clocks);
|
||
|
|
|
||
|
|
int imx8_enable_clocks(struct snd_sof_dev *sdev, struct imx_clocks *clks)
|
||
|
|
{
|
||
|
|
return clk_bulk_prepare_enable(clks->num_dsp_clks, clks->dsp_clks);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(imx8_enable_clocks);
|
||
|
|
|
||
|
|
void imx8_disable_clocks(struct snd_sof_dev *sdev, struct imx_clocks *clks)
|
||
|
|
{
|
||
|
|
clk_bulk_disable_unprepare(clks->num_dsp_clks, clks->dsp_clks);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(imx8_disable_clocks);
|
||
|
|
|
||
|
|
MODULE_LICENSE("Dual BSD/GPL");
|