blob: 2efcb6477f3f62359d166a6e04f8872a2a7c7344 [file] [log] [blame]
/*
* Copyright (c) 2024 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <ctype.h>
#include <zephyr/kernel.h>
#include <string.h>
#include <tracing_core.h>
#include <tracing_buffer.h>
#include <tracing_backend.h>
#include <adsp_memory.h>
#include <adsp_debug_window.h>
/* structure of memory window */
struct tracing_backend_adsp_memory_window {
uint32_t head_offset; /* offset of the first not used byte in data[] */
uint8_t data[]; /* tracing data */
} __packed __aligned(8);
#define ADSP_TRACING_WINDOW_DATA_SIZE \
(ADSP_DW_SLOT_SIZE - offsetof(struct tracing_backend_adsp_memory_window, data))
static volatile struct tracing_backend_adsp_memory_window *mem_window;
static void tracing_backend_adsp_memory_window_output(
const struct tracing_backend *backend,
uint8_t *data, uint32_t length)
{
/* copy data to ring buffer,
* to make FW part fast, there's no sync with the data reader
* the reader MUST read data before they got overwritten
*/
size_t to_copy = MIN(length, ADSP_TRACING_WINDOW_DATA_SIZE - mem_window->head_offset);
memcpy((void *)(mem_window->data + mem_window->head_offset), data, to_copy);
length -= to_copy;
if (length) {
memcpy((void *)mem_window->data, data + to_copy, length);
mem_window->head_offset = length;
} else
mem_window->head_offset += to_copy;
}
static void tracing_backend_adsp_memory_window_init(void)
{
volatile struct adsp_debug_window *window = ADSP_DW;
window->descs[ADSP_DW_SLOT_NUM_TRACE].type = ADSP_DW_SLOT_TRACE;
window->descs[ADSP_DW_SLOT_NUM_TRACE].resource_id = 0;
mem_window = (struct tracing_backend_adsp_memory_window *)
ADSP_DW->slots[ADSP_DW_SLOT_NUM_TRACE];
mem_window->head_offset = 0;
}
const struct tracing_backend_api tracing_backend_adsp_memory_window_api = {
.init = tracing_backend_adsp_memory_window_init,
.output = tracing_backend_adsp_memory_window_output
};
TRACING_BACKEND_DEFINE(tracing_backend_adsp_memory_window, tracing_backend_adsp_memory_window_api);