3fde2c50c6
This commits adds a tracing backend based on Intel ADSP debug memory window Signed-off-by: Marcin Szkudlinski <marcin.szkudlinski@intel.com>
66 lines
2 KiB
C
66 lines
2 KiB
C
/*
|
|
* 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);
|