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/*
* Copyright 2017 Valve Corporation
*
* 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.
*
* Authors: Andres Rodriguez <andresx7@gmail.com>
*/
#include <linux/fdtable.h>
#include <linux/pid.h>
#include <drm/amdgpu_drm.h>
#include "amdgpu.h"
#include "amdgpu_vm.h"
enum drm_sched_priority amdgpu_to_sched_priority(int amdgpu_priority)
{
switch (amdgpu_priority) {
case AMDGPU_CTX_PRIORITY_VERY_HIGH:
return DRM_SCHED_PRIORITY_HIGH_HW;
case AMDGPU_CTX_PRIORITY_HIGH:
return DRM_SCHED_PRIORITY_HIGH_SW;
case AMDGPU_CTX_PRIORITY_NORMAL:
return DRM_SCHED_PRIORITY_NORMAL;
case AMDGPU_CTX_PRIORITY_LOW:
case AMDGPU_CTX_PRIORITY_VERY_LOW:
return DRM_SCHED_PRIORITY_LOW;
case AMDGPU_CTX_PRIORITY_UNSET:
return DRM_SCHED_PRIORITY_UNSET;
default:
WARN(1, "Invalid context priority %d\n", amdgpu_priority);
return DRM_SCHED_PRIORITY_INVALID;
}
}
static int amdgpu_sched_process_priority_override(struct amdgpu_device *adev,
int fd,
enum drm_sched_priority priority)
{
struct file *filp = fcheck(fd);
struct drm_file *file;
struct pid *pid;
struct amdgpu_fpriv *fpriv;
struct amdgpu_ctx *ctx;
uint32_t id;
if (!filp)
return -EINVAL;
pid = get_pid(((struct drm_file *)filp->private_data)->pid);
mutex_lock(&adev->ddev->filelist_mutex);
list_for_each_entry(file, &adev->ddev->filelist, lhead) {
if (file->pid != pid)
continue;
fpriv = file->driver_priv;
idr_for_each_entry(&fpriv->ctx_mgr.ctx_handles, ctx, id)
amdgpu_ctx_priority_override(ctx, priority);
}
mutex_unlock(&adev->ddev->filelist_mutex);
put_pid(pid);
return 0;
}
int amdgpu_sched_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
union drm_amdgpu_sched *args = data;
struct amdgpu_device *adev = dev->dev_private;
enum drm_sched_priority priority;
int r;
priority = amdgpu_to_sched_priority(args->in.priority);
if (args->in.flags || priority == DRM_SCHED_PRIORITY_INVALID)
return -EINVAL;
switch (args->in.op) {
case AMDGPU_SCHED_OP_PROCESS_PRIORITY_OVERRIDE:
r = amdgpu_sched_process_priority_override(adev,
args->in.fd,
priority);
break;
default:
DRM_ERROR("Invalid sched op specified: %d\n", args->in.op);
r = -EINVAL;
break;
}
return r;
}
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