linux/drivers/hwtracing/intel_th/msu-sink.c

// SPDX-License-Identifier: GPL-2.0
/*
 * An example software sink buffer for Intel TH MSU.
 *
 * Copyright (C) 2019 Intel Corporation.
 */

#include <linux/intel_th.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>

#define MAX_SGTS …

struct msu_sink_private { … };

static void *msu_sink_assign(struct device *dev, int *mode)
{ … }

static void msu_sink_unassign(void *data)
{ … }

/* See also: msc.c: __msc_buffer_win_alloc() */
static int msu_sink_alloc_window(void *data, struct sg_table **sgt, size_t size)
{ … }

/* See also: msc.c: __msc_buffer_win_free() */
static void msu_sink_free_window(void *data, struct sg_table *sgt)
{ … }

static int msu_sink_ready(void *data, struct sg_table *sgt, size_t bytes)
{ … }

static const struct msu_buffer sink_mbuf = …;

module_intel_th_msu_buffer(…);

MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;