1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
// SPDX-License-Identifier: GPL-2.0-only
//
// Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
//
// Authors: Cezary Rojewski <cezary.rojewski@intel.com>
// Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
//
#include <linux/debugfs.h>
#include <linux/kfifo.h>
#include <linux/wait.h>
#include "avs.h"
static unsigned int __kfifo_fromio(struct kfifo *fifo, const void __iomem *src, unsigned int len)
{
struct __kfifo *__fifo = &fifo->kfifo;
unsigned int l, off;
len = min(len, kfifo_avail(fifo));
off = __fifo->in & __fifo->mask;
l = min(len, kfifo_size(fifo) - off);
memcpy_fromio(__fifo->data + off, src, l);
memcpy_fromio(__fifo->data, src + l, len - l);
/* Make sure data copied from SRAM is visible to all CPUs. */
smp_mb();
__fifo->in += len;
return len;
}
bool avs_logging_fw(struct avs_dev *adev)
{
return kfifo_initialized(&adev->trace_fifo);
}
void avs_dump_fw_log(struct avs_dev *adev, const void __iomem *src, unsigned int len)
{
__kfifo_fromio(&adev->trace_fifo, src, len);
}
void avs_dump_fw_log_wakeup(struct avs_dev *adev, const void __iomem *src, unsigned int len)
{
avs_dump_fw_log(adev, src, len);
wake_up(&adev->trace_waitq);
}
|
