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