145 lines
5.4 KiB
C
145 lines
5.4 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) 2018 Intel Corporation. All rights reserved.
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//
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// Author: Pan Xiuli <xiuli.pan@linux.intel.com>
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//
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#include <linux/module.h>
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#include <sound/sof.h>
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#include <sound/sof/xtensa.h>
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#include "../sof-priv.h"
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struct xtensa_exception_cause {
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u32 id;
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const char *msg;
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const char *description;
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};
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/*
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* From 4.4.1.5 table 4-64 Exception Causes of Xtensa
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* Instruction Set Architecture (ISA) Reference Manual
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*/
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static const struct xtensa_exception_cause xtensa_exception_causes[] = {
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{0, "IllegalInstructionCause", "Illegal instruction"},
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{1, "SyscallCause", "SYSCALL instruction"},
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{2, "InstructionFetchErrorCause",
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"Processor internal physical address or data error during instruction fetch"},
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{3, "LoadStoreErrorCause",
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"Processor internal physical address or data error during load or store"},
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{4, "Level1InterruptCause",
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"Level-1 interrupt as indicated by set level-1 bits in the INTERRUPT register"},
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{5, "AllocaCause",
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"MOVSP instruction, if caller’s registers are not in the register file"},
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{6, "IntegerDivideByZeroCause",
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"QUOS, QUOU, REMS, or REMU divisor operand is zero"},
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{8, "PrivilegedCause",
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"Attempt to execute a privileged operation when CRING ? 0"},
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{9, "LoadStoreAlignmentCause", "Load or store to an unaligned address"},
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{12, "InstrPIFDataErrorCause",
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"PIF data error during instruction fetch"},
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{13, "LoadStorePIFDataErrorCause",
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"Synchronous PIF data error during LoadStore access"},
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{14, "InstrPIFAddrErrorCause",
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"PIF address error during instruction fetch"},
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{15, "LoadStorePIFAddrErrorCause",
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"Synchronous PIF address error during LoadStore access"},
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{16, "InstTLBMissCause", "Error during Instruction TLB refill"},
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{17, "InstTLBMultiHitCause",
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"Multiple instruction TLB entries matched"},
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{18, "InstFetchPrivilegeCause",
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"An instruction fetch referenced a virtual address at a ring level less than CRING"},
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{20, "InstFetchProhibitedCause",
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"An instruction fetch referenced a page mapped with an attribute that does not permit instruction fetch"},
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{24, "LoadStoreTLBMissCause",
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"Error during TLB refill for a load or store"},
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{25, "LoadStoreTLBMultiHitCause",
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"Multiple TLB entries matched for a load or store"},
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{26, "LoadStorePrivilegeCause",
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"A load or store referenced a virtual address at a ring level less than CRING"},
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{28, "LoadProhibitedCause",
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"A load referenced a page mapped with an attribute that does not permit loads"},
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{32, "Coprocessor0Disabled",
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"Coprocessor 0 instruction when cp0 disabled"},
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{33, "Coprocessor1Disabled",
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"Coprocessor 1 instruction when cp1 disabled"},
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{34, "Coprocessor2Disabled",
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"Coprocessor 2 instruction when cp2 disabled"},
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{35, "Coprocessor3Disabled",
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"Coprocessor 3 instruction when cp3 disabled"},
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{36, "Coprocessor4Disabled",
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"Coprocessor 4 instruction when cp4 disabled"},
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{37, "Coprocessor5Disabled",
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"Coprocessor 5 instruction when cp5 disabled"},
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{38, "Coprocessor6Disabled",
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"Coprocessor 6 instruction when cp6 disabled"},
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{39, "Coprocessor7Disabled",
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"Coprocessor 7 instruction when cp7 disabled"},
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};
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/* only need xtensa atm */
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static void xtensa_dsp_oops(struct snd_sof_dev *sdev, const char *level, void *oops)
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{
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struct sof_ipc_dsp_oops_xtensa *xoops = oops;
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int i;
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dev_printk(level, sdev->dev, "error: DSP Firmware Oops\n");
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for (i = 0; i < ARRAY_SIZE(xtensa_exception_causes); i++) {
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if (xtensa_exception_causes[i].id == xoops->exccause) {
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dev_printk(level, sdev->dev,
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"error: Exception Cause: %s, %s\n",
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xtensa_exception_causes[i].msg,
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xtensa_exception_causes[i].description);
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}
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}
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dev_printk(level, sdev->dev,
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"EXCCAUSE 0x%8.8x EXCVADDR 0x%8.8x PS 0x%8.8x SAR 0x%8.8x\n",
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xoops->exccause, xoops->excvaddr, xoops->ps, xoops->sar);
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dev_printk(level, sdev->dev,
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"EPC1 0x%8.8x EPC2 0x%8.8x EPC3 0x%8.8x EPC4 0x%8.8x",
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xoops->epc1, xoops->epc2, xoops->epc3, xoops->epc4);
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dev_printk(level, sdev->dev,
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"EPC5 0x%8.8x EPC6 0x%8.8x EPC7 0x%8.8x DEPC 0x%8.8x",
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xoops->epc5, xoops->epc6, xoops->epc7, xoops->depc);
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dev_printk(level, sdev->dev,
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"EPS2 0x%8.8x EPS3 0x%8.8x EPS4 0x%8.8x EPS5 0x%8.8x",
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xoops->eps2, xoops->eps3, xoops->eps4, xoops->eps5);
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dev_printk(level, sdev->dev,
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"EPS6 0x%8.8x EPS7 0x%8.8x INTENABL 0x%8.8x INTERRU 0x%8.8x",
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xoops->eps6, xoops->eps7, xoops->intenable, xoops->interrupt);
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}
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static void xtensa_stack(struct snd_sof_dev *sdev, const char *level, void *oops,
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u32 *stack, u32 stack_words)
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{
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struct sof_ipc_dsp_oops_xtensa *xoops = oops;
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u32 stack_ptr = xoops->plat_hdr.stackptr;
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/* 4 * 8chars + 3 ws + 1 terminating NUL */
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unsigned char buf[4 * 8 + 3 + 1];
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int i;
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dev_printk(level, sdev->dev, "stack dump from 0x%8.8x\n", stack_ptr);
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/*
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* example output:
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* 0x0049fbb0: 8000f2d0 0049fc00 6f6c6c61 00632e63
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*/
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for (i = 0; i < stack_words; i += 4) {
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hex_dump_to_buffer(stack + i, 16, 16, 4,
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buf, sizeof(buf), false);
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dev_printk(level, sdev->dev, "0x%08x: %s\n", stack_ptr + i * 4, buf);
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}
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}
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const struct dsp_arch_ops sof_xtensa_arch_ops = {
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.dsp_oops = xtensa_dsp_oops,
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.dsp_stack = xtensa_stack,
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};
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EXPORT_SYMBOL_NS(sof_xtensa_arch_ops, SND_SOC_SOF_XTENSA);
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MODULE_DESCRIPTION("SOF Xtensa DSP support");
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MODULE_LICENSE("Dual BSD/GPL");
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