diff options
Diffstat (limited to 'drivers/accel/ivpu/ivpu_fw_log.c')
| -rw-r--r-- | drivers/accel/ivpu/ivpu_fw_log.c | 142 |
1 files changed, 142 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..95065cac9fbd --- /dev/null +++ b/drivers/accel/ivpu/ivpu_fw_log.c @@ -0,0 +1,142 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2020-2023 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_log_level = IVPU_FW_LOG_ERROR; +module_param(ivpu_log_level, uint, 0444); +MODULE_PARM_DESC(ivpu_log_level, + "VPU firmware default trace 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_ptr(struct ivpu_device *vdev, struct ivpu_bo *bo, u32 *offset, + struct vpu_tracing_buffer_header **log_header) +{ + struct vpu_tracing_buffer_header *log; + + if ((*offset + sizeof(*log)) > bo->base.size) + return -EINVAL; + + log = bo->kvaddr + *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 *)bo->kvaddr + bo->base.size) { + ivpu_dbg(vdev, FW_BOOT, "Invalid log size 0x%x\n", log->size); + return -EINVAL; + } + + *log_header = 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 buffer_print(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\n", line); +} + +static void fw_log_print_buffer(struct ivpu_device *vdev, struct vpu_tracing_buffer_header *log, + const char *prefix, bool only_new_msgs, struct drm_printer *p) +{ + char *log_buffer = (void *)log + log->header_size; + u32 log_size = log->size - log->header_size; + u32 log_start = log->read_index; + u32 log_end = log->write_index; + + if (!(log->write_index || log->wrap_count) || + (log->write_index == log->read_index && only_new_msgs)) { + drm_printf(p, "==== %s \"%s\" log empty ====\n", prefix, log->name); + return; + } + + drm_printf(p, "==== %s \"%s\" log start ====\n", prefix, log->name); + if (log->write_index > log->read_index) { + buffer_print(log_buffer + log_start, log_end - log_start, p); + } else { + buffer_print(log_buffer + log_end, log_size - log_end, p); + buffer_print(log_buffer, log_end, p); + } + drm_printf(p, "\x1b[0m"); + drm_printf(p, "==== %s \"%s\" log end ====\n", prefix, log->name); +} + +void ivpu_fw_log_print(struct ivpu_device *vdev, bool only_new_msgs, struct drm_printer *p) +{ + struct vpu_tracing_buffer_header *log_header; + u32 next = 0; + + while (fw_log_ptr(vdev, vdev->fw->mem_log_crit, &next, &log_header) == 0) + fw_log_print_buffer(vdev, log_header, "VPU critical", only_new_msgs, p); + + next = 0; + while (fw_log_ptr(vdev, vdev->fw->mem_log_verb, &next, &log_header) == 0) + fw_log_print_buffer(vdev, log_header, "VPU verbose", only_new_msgs, p); +} + +void ivpu_fw_log_clear(struct ivpu_device *vdev) +{ + struct vpu_tracing_buffer_header *log_header; + u32 next = 0; + + while (fw_log_ptr(vdev, vdev->fw->mem_log_crit, &next, &log_header) == 0) + log_header->read_index = log_header->write_index; + + next = 0; + while (fw_log_ptr(vdev, vdev->fw->mem_log_verb, &next, &log_header) == 0) + log_header->read_index = log_header->write_index; +} |