/*
* Copyright 2008 Advanced Micro Devices, Inc.
* Copyright 2008 Red Hat Inc.
* Copyright 2009 Jerome Glisse.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include <linux/kthread.h>
#include <linux/pci.h>
#include <linux/uaccess.h>
#include <linux/pm_runtime.h>
#include <linux/poll.h>
#include "amdgpu.h"
#include "amdgpu_pm.h"
#include "amdgpu_dm_debugfs.h"
#include "amdgpu_ras.h"
#include "amdgpu_rap.h"
#include "amdgpu_securedisplay.h"
#include "amdgpu_fw_attestation.h"
int amdgpu_debugfs_wait_dump(struct amdgpu_device *adev)
{
#if defined(CONFIG_DEBUG_FS)
unsigned long timeout = 600 * HZ;
int ret;
wake_up_interruptible(&adev->autodump.gpu_hang);
ret = wait_for_completion_interruptible_timeout(&adev->autodump.dumping, timeout);
if (ret == 0) {
pr_err("autodump: timeout, move on to gpu recovery\n");
return -ETIMEDOUT;
}
#endif
return 0;
}
#if defined(CONFIG_DEBUG_FS)
static int amdgpu_debugfs_autodump_open(struct inode *inode, struct file *file)
{
struct amdgpu_device *adev = inode->i_private;
int ret;
file->private_data = adev;
ret = down_read_killable(&adev->reset_sem);
if (ret)
return ret;
if (adev->autodump.dumping.done) {
reinit_completion(&adev->autodump.dumping);
ret = 0;
} else {
ret = -EBUSY;
}
up_read(&adev->reset_sem);
return ret;
}
static int amdgpu_debugfs_autodump_release(struct inode *inode, struct file *file)
{
struct amdgpu_device *adev = file->private_data;
complete_all(&adev->autodump.dumping);
return 0;
}
static unsigned int amdgpu_debugfs_autodump_poll(struct file *file, struct poll_table_struct *poll_table)
{
struct amdgpu_device *adev = file->private_data;
poll_wait(file, &adev->autodump.gpu_hang, poll_table);
if (amdgpu_in_reset(adev))
return POLLIN | POLLRDNORM | POLLWRNORM;
return 0;
}
static const struct file_operations autodump_debug_fops = {
.owner = THIS_MODULE,
.open = amdgpu_debugfs_autodump_open,
.poll = amdgpu_debugfs_autodump_poll,
.release = amdgpu_debugfs_autodump_release,
};
static void amdgpu_debugfs_autodump_init(struct amdgpu_device *adev)
{
init_completion(&adev->autodump.dumping);
complete_all(&adev->autodump.dumping);
init_waitqueue_head(&adev->autodump.gpu_hang);
debugfs_create_file("amdgpu_autodump", 0600,
adev_to_drm(adev)->primary->debugfs_root,
adev, &autodump_debug_fops);
}
/**
* amdgpu_debugfs_process_reg_op - Handle MMIO register reads/writes
*
* @read: True if reading
* @f: open file handle
*
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