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// 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;
}
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