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