amdxdna_mailbox_helper.c

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * Copyright (C) 2024, Advanced Micro Devices, Inc.
 4 */
 5
 6#include <drm/amdxdna_accel.h>
 7#include <drm/drm_device.h>
 8#include <drm/drm_print.h>
 9#include <drm/drm_gem.h>
10#include <drm/drm_gem_shmem_helper.h>
11#include <drm/gpu_scheduler.h>
12#include <linux/completion.h>
13
14#include "amdxdna_gem.h"
15#include "amdxdna_mailbox.h"
16#include "amdxdna_mailbox_helper.h"
17#include "amdxdna_pci_drv.h"
18
19int xdna_msg_cb(void *handle, void __iomem *data, size_t size)
20{
21	struct xdna_notify *cb_arg = handle;
22	int ret;
23
24	if (unlikely(!data))
25		goto out;
26
27	if (unlikely(cb_arg->size != size)) {
28		cb_arg->error = -EINVAL;
29		goto out;
30	}
31
32	memcpy_fromio(cb_arg->data, data, cb_arg->size);
33	print_hex_dump_debug("resp data: ", DUMP_PREFIX_OFFSET,
34			     16, 4, cb_arg->data, cb_arg->size, true);
35out:
36	ret = cb_arg->error;
37	complete(&cb_arg->comp);
38	return ret;
39}
40
41int xdna_send_msg_wait(struct amdxdna_dev *xdna, struct mailbox_channel *chann,
42		       struct xdna_mailbox_msg *msg)
43{
44	struct xdna_notify *hdl = msg->handle;
45	int ret;
46
47	ret = xdna_mailbox_send_msg(chann, msg, TX_TIMEOUT);
48	if (ret) {
49		XDNA_ERR(xdna, "Send message failed, ret %d", ret);
50		return ret;
51	}
52
53	ret = wait_for_completion_timeout(&hdl->comp,
54					  msecs_to_jiffies(RX_TIMEOUT));
55	if (!ret) {
56		XDNA_ERR(xdna, "Wait for completion timeout");
57		return -ETIME;
58	}
59
60	return hdl->error;
61}