// SPDX-License-Identifier: BSD-3-Clause

//

// Copyright(c) 2019 Intel Corporation. All rights reserved.

//

// Author: Marcin Rajwa <marcin.rajwa@linux.intel.com>

#include <sof/debug/gdb/ringbuffer.h>

#include <sof/lib/mailbox.h>

#define BUFFER_OFFSET 0x120

volatile struct ring * const rx = (void *)mailbox_get_debug_base();

volatile struct ring * const tx = (void *)(mailbox_get_debug_base() +

BUFFER_OFFSET);

volatile struct ring * const debug = (void *)(mailbox_get_debug_base() +

(2 * BUFFER_OFFSET));

void init_buffers(void)

{

rx->head = rx->tail = 0;

tx->head = tx->tail = 0;

debug->head = debug->tail = 0;

}

void put_debug_char(unsigned char c)

{

while (!ring_have_space(tx))

;

tx->data[tx->head] = c;

tx->head = ring_next_head(tx);

}

unsigned char get_debug_char(void)

{

unsigned char v;

while (!ring_have_data(rx))

;

v = rx->data[rx->tail];

rx->tail = ring_next_tail(rx);

return v;

}

void put_exception_char(char c)

{

debug->data[debug->head] = c;

debug->head = ring_next_head(debug);

}