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

*

* Copyright(c) 2016 Intel Corporation. All rights reserved.

*

* Author: Yan Wang <yan.wang@linux.intel.com>

*/

#ifndef __SOF_TRACE_DMA_TRACE_H__

#define __SOF_TRACE_DMA_TRACE_H__

#include <sof/lib/dma.h>

#include <rtos/task.h>

#include <rtos/sof.h>

#include <rtos/spinlock.h>

#include <ipc/trace.h>

#include <stdint.h>

struct ipc_msg;

struct sof;

struct dma_trace_buf {

void *w_ptr; /* buffer write pointer */

void *r_ptr; /* buffer read position */

void *addr; /* buffer base address */

void *end_addr; /* buffer end address */

uint32_t size; /* size of buffer in bytes */

uint32_t avail; /* bytes available to read */

};

struct dma_trace_data {

struct dma_sg_config config;

struct dma_trace_buf dmatb;

#if CONFIG_DMA_GW

struct dma_sg_config gw_config;

#endif

struct dma_copy dc;

struct sof_ipc_dma_trace_posn posn;

struct ipc_msg *msg;

uint32_t host_size;

struct task dmat_work;

uint32_t enabled;

uint32_t copy_in_progress;

uint32_t stream_tag;

uint32_t active_stream_tag;

uint32_t dma_copy_align; /* Minimal chunk of data possible to be

* copied by dma connected to host

*/

uint32_t dropped_entries; /* amount of dropped entries */

struct k_spinlock lock; /* dma trace lock */

uint64_t time_delta; /* difference between the host time */

};

int dma_trace_init_early(struct sof *sof);

int dma_trace_init_complete(struct dma_trace_data *d);

int dma_trace_host_buffer(struct dma_trace_data *d,

struct dma_sg_elem_array *elem_array,

uint32_t host_size);

int dma_trace_enable(struct dma_trace_data *d);

void dma_trace_disable(struct dma_trace_data *d);

void dma_trace_flush(void *destination);

void dma_trace_on(void);

void dma_trace_off(void);

void dtrace_event(const char *e, uint32_t size);

void dtrace_event_atomic(const char *e, uint32_t length);

static inline bool dma_trace_initialized(const struct dma_trace_data *d)

{

return d && d->dmatb.addr;

}

static inline struct dma_trace_data *dma_trace_data_get(void)

{

return sof_get()->dmat;

}

static inline uint32_t dtrace_calc_buf_margin(struct dma_trace_buf *buffer)

{

return (char *)buffer->end_addr - (char *)buffer->w_ptr;

}

#endif /* __SOF_TRACE_DMA_TRACE_H__ */