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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (C) 2020-2023 Intel Corporation4 */5 6#include <linux/ctype.h>7#include <linux/highmem.h>8#include <linux/fs.h>9#include <linux/slab.h>10#include <linux/moduleparam.h>11 12#include "vpu_boot_api.h"13#include "ivpu_drv.h"14#include "ivpu_fw.h"15#include "ivpu_fw_log.h"16#include "ivpu_gem.h"17 18#define IVPU_FW_LOG_LINE_LENGTH 25619 20unsigned int ivpu_log_level = IVPU_FW_LOG_ERROR;21module_param(ivpu_log_level, uint, 0444);22MODULE_PARM_DESC(ivpu_log_level,23 "NPU firmware default trace level: debug=" __stringify(IVPU_FW_LOG_DEBUG)24 " info=" __stringify(IVPU_FW_LOG_INFO)25 " warn=" __stringify(IVPU_FW_LOG_WARN)26 " error=" __stringify(IVPU_FW_LOG_ERROR)27 " fatal=" __stringify(IVPU_FW_LOG_FATAL));28 29static int fw_log_ptr(struct ivpu_device *vdev, struct ivpu_bo *bo, u32 *offset,30 struct vpu_tracing_buffer_header **log_header)31{32 struct vpu_tracing_buffer_header *log;33 34 if ((*offset + sizeof(*log)) > ivpu_bo_size(bo))35 return -EINVAL;36 37 log = ivpu_bo_vaddr(bo) + *offset;38 39 if (log->vpu_canary_start != VPU_TRACING_BUFFER_CANARY)40 return -EINVAL;41 42 if (log->header_size < sizeof(*log) || log->header_size > 1024) {43 ivpu_dbg(vdev, FW_BOOT, "Invalid header size 0x%x\n", log->header_size);44 return -EINVAL;45 }46 if ((char *)log + log->size > (char *)ivpu_bo_vaddr(bo) + ivpu_bo_size(bo)) {47 ivpu_dbg(vdev, FW_BOOT, "Invalid log size 0x%x\n", log->size);48 return -EINVAL;49 }50 51 *log_header = log;52 *offset += log->size;53 54 ivpu_dbg(vdev, FW_BOOT,55 "FW log name \"%s\", write offset 0x%x size 0x%x, wrap count %d, hdr version %d size %d format %d, alignment %d",56 log->name, log->write_index, log->size, log->wrap_count, log->header_version,57 log->header_size, log->format, log->alignment);58 59 return 0;60}61 62static void buffer_print(char *buffer, u32 size, struct drm_printer *p)63{64 char line[IVPU_FW_LOG_LINE_LENGTH];65 u32 index = 0;66 67 if (!size || !buffer)68 return;69 70 while (size--) {71 if (*buffer == '\n' || *buffer == 0) {72 line[index] = 0;73 if (index != 0)74 drm_printf(p, "%s\n", line);75 index = 0;76 buffer++;77 continue;78 }79 if (index == IVPU_FW_LOG_LINE_LENGTH - 1) {80 line[index] = 0;81 index = 0;82 drm_printf(p, "%s\n", line);83 }84 if (*buffer != '\r' && (isprint(*buffer) || iscntrl(*buffer)))85 line[index++] = *buffer;86 buffer++;87 }88 line[index] = 0;89 if (index != 0)90 drm_printf(p, "%s\n", line);91}92 93static void fw_log_print_buffer(struct ivpu_device *vdev, struct vpu_tracing_buffer_header *log,94 const char *prefix, bool only_new_msgs, struct drm_printer *p)95{96 char *log_buffer = (void *)log + log->header_size;97 u32 log_size = log->size - log->header_size;98 u32 log_start = log->read_index;99 u32 log_end = log->write_index;100 101 if (!(log->write_index || log->wrap_count) ||102 (log->write_index == log->read_index && only_new_msgs)) {103 drm_printf(p, "==== %s \"%s\" log empty ====\n", prefix, log->name);104 return;105 }106 107 drm_printf(p, "==== %s \"%s\" log start ====\n", prefix, log->name);108 if (log->write_index > log->read_index) {109 buffer_print(log_buffer + log_start, log_end - log_start, p);110 } else {111 buffer_print(log_buffer + log_end, log_size - log_end, p);112 buffer_print(log_buffer, log_end, p);113 }114 drm_printf(p, "\x1b[0m");115 drm_printf(p, "==== %s \"%s\" log end ====\n", prefix, log->name);116}117 118void ivpu_fw_log_print(struct ivpu_device *vdev, bool only_new_msgs, struct drm_printer *p)119{120 struct vpu_tracing_buffer_header *log_header;121 u32 next = 0;122 123 while (fw_log_ptr(vdev, vdev->fw->mem_log_crit, &next, &log_header) == 0)124 fw_log_print_buffer(vdev, log_header, "NPU critical", only_new_msgs, p);125 126 next = 0;127 while (fw_log_ptr(vdev, vdev->fw->mem_log_verb, &next, &log_header) == 0)128 fw_log_print_buffer(vdev, log_header, "NPU verbose", only_new_msgs, p);129}130 131void ivpu_fw_log_clear(struct ivpu_device *vdev)132{133 struct vpu_tracing_buffer_header *log_header;134 u32 next = 0;135 136 while (fw_log_ptr(vdev, vdev->fw->mem_log_crit, &next, &log_header) == 0)137 log_header->read_index = log_header->write_index;138 139 next = 0;140 while (fw_log_ptr(vdev, vdev->fw->mem_log_verb, &next, &log_header) == 0)141 log_header->read_index = log_header->write_index;142}143