diff options
Diffstat (limited to 'drivers/accel/ivpu/ivpu_fw_log.c')
| -rw-r--r-- | drivers/accel/ivpu/ivpu_fw_log.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/drivers/accel/ivpu/ivpu_fw_log.c b/drivers/accel/ivpu/ivpu_fw_log.c new file mode 100644 index 000000000000..337c906b0210 --- /dev/null +++ b/drivers/accel/ivpu/ivpu_fw_log.c @@ -0,0 +1,175 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2020-2024 Intel Corporation + */ + +#include <linux/ctype.h> +#include <linux/highmem.h> +#include <linux/fs.h> +#include <linux/slab.h> +#include <linux/moduleparam.h> + +#include "vpu_boot_api.h" +#include "ivpu_drv.h" +#include "ivpu_fw.h" +#include "ivpu_fw_log.h" +#include "ivpu_gem.h" + +#define IVPU_FW_LOG_LINE_LENGTH 256 + +unsigned int ivpu_fw_log_level = IVPU_FW_LOG_ERROR; +module_param_named(fw_log_level, ivpu_fw_log_level, uint, 0444); +MODULE_PARM_DESC(fw_log_level, + "NPU firmware default log level: debug=" __stringify(IVPU_FW_LOG_DEBUG) + " info=" __stringify(IVPU_FW_LOG_INFO) + " warn=" __stringify(IVPU_FW_LOG_WARN) + " error=" __stringify(IVPU_FW_LOG_ERROR) + " fatal=" __stringify(IVPU_FW_LOG_FATAL)); + +static int fw_log_from_bo(struct ivpu_device *vdev, struct ivpu_bo *bo, u32 *offset, + struct vpu_tracing_buffer_header **out_log) +{ + struct vpu_tracing_buffer_header *log; + + if ((*offset + sizeof(*log)) > ivpu_bo_size(bo)) + return -EINVAL; + + log = ivpu_bo_vaddr(bo) + *offset; + + if (log->vpu_canary_start != VPU_TRACING_BUFFER_CANARY) + return -EINVAL; + + if (log->header_size < sizeof(*log) || log->header_size > 1024) { + ivpu_dbg(vdev, FW_BOOT, "Invalid header size 0x%x\n", log->header_size); + return -EINVAL; + } + if ((char *)log + log->size > (char *)ivpu_bo_vaddr(bo) + ivpu_bo_size(bo)) { + ivpu_dbg(vdev, FW_BOOT, "Invalid log size 0x%x\n", log->size); + return -EINVAL; + } + + *out_log = log; + *offset += log->size; + + ivpu_dbg(vdev, FW_BOOT, + "FW log name \"%s\", write offset 0x%x size 0x%x, wrap count %d, hdr version %d size %d format %d, alignment %d", + log->name, log->write_index, log->size, log->wrap_count, log->header_version, + log->header_size, log->format, log->alignment); + + return 0; +} + +static void fw_log_print_lines(char *buffer, u32 size, struct drm_printer *p) +{ + char line[IVPU_FW_LOG_LINE_LENGTH]; + u32 index = 0; + + if (!size || !buffer) + return; + + while (size--) { + if (*buffer == '\n' || *buffer == 0) { + line[index] = 0; + if (index != 0) + drm_printf(p, "%s\n", line); + index = 0; + buffer++; + continue; + } + if (index == IVPU_FW_LOG_LINE_LENGTH - 1) { + line[index] = 0; + index = 0; + drm_printf(p, "%s\n", line); + } + if (*buffer != '\r' && (isprint(*buffer) || iscntrl(*buffer))) + line[index++] = *buffer; + buffer++; + } + line[index] = 0; + if (index != 0) + drm_printf(p, "%s", line); +} + +static void fw_log_print_buffer(struct vpu_tracing_buffer_header *log, const char *prefix, + bool only_new_msgs, struct drm_printer *p) +{ + char *log_data = (void *)log + log->header_size; + u32 data_size = log->size - log->header_size; + u32 log_start = only_new_msgs ? READ_ONCE(log->read_index) : 0; + u32 log_end = READ_ONCE(log->write_index); + + if (log->wrap_count == log->read_wrap_count) { + if (log_end <= log_start) { + drm_printf(p, "==== %s \"%s\" log empty ====\n", prefix, log->name); + return; + } + } else if (log->wrap_count == log->read_wrap_count + 1) { + if (log_end > log_start) + log_start = log_end; + } else { + log_start = log_end; + } + + drm_printf(p, "==== %s \"%s\" log start ====\n", prefix, log->name); + if (log_end > log_start) { + fw_log_print_lines(log_data + log_start, log_end - log_start, p); + } else { + fw_log_print_lines(log_data + log_start, data_size - log_start, p); + fw_log_print_lines(log_data, log_end, p); + } + drm_printf(p, "\n\x1b[0m"); /* add new line and clear formatting */ + drm_printf(p, "==== %s \"%s\" log end ====\n", prefix, log->name); +} + +static void +fw_log_print_all_in_bo(struct ivpu_device *vdev, const char *name, + struct ivpu_bo *bo, bool only_new_msgs, struct drm_printer *p) +{ + struct vpu_tracing_buffer_header *log; + u32 next = 0; + + while (fw_log_from_bo(vdev, bo, &next, &log) == 0) + fw_log_print_buffer(log, name, only_new_msgs, p); +} + +void ivpu_fw_log_print(struct ivpu_device *vdev, bool only_new_msgs, struct drm_printer *p) +{ + fw_log_print_all_in_bo(vdev, "NPU critical", vdev->fw->mem_log_crit, only_new_msgs, p); + fw_log_print_all_in_bo(vdev, "NPU verbose", vdev->fw->mem_log_verb, only_new_msgs, p); +} + +void ivpu_fw_log_mark_read(struct ivpu_device *vdev) +{ + struct vpu_tracing_buffer_header *log; + u32 next; + + next = 0; + while (fw_log_from_bo(vdev, vdev->fw->mem_log_crit, &next, &log) == 0) { + log->read_index = READ_ONCE(log->write_index); + log->read_wrap_count = READ_ONCE(log->wrap_count); + } + + next = 0; + while (fw_log_from_bo(vdev, vdev->fw->mem_log_verb, &next, &log) == 0) { + log->read_index = READ_ONCE(log->write_index); + log->read_wrap_count = READ_ONCE(log->wrap_count); + } +} + +void ivpu_fw_log_reset(struct ivpu_device *vdev) +{ + struct vpu_tracing_buffer_header *log; + u32 next; + + next = 0; + while (fw_log_from_bo(vdev, vdev->fw->mem_log_crit, &next, &log) == 0) { + log->read_index = 0; + log->read_wrap_count = 0; + } + + next = 0; + while (fw_log_from_bo(vdev, vdev->fw->mem_log_verb, &next, &log) == 0) { + log->read_index = 0; + log->read_wrap_count = 0; + } +} |