linux/drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.h
James Zhu 651a146526 drm/amdgpu/jpeg: fix race condition issue for jpeg start
Fix race condition issue when multiple jpeg starts are called.

Signed-off-by: James Zhu <James.Zhu@amd.com>
Acked-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-07-01 01:59:19 -04:00

65 lines
2.2 KiB
C

/*
* Copyright 2019 Advanced Micro Devices, Inc.
*
* 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.
*
*/
#ifndef __AMDGPU_JPEG_H__
#define __AMDGPU_JPEG_H__
#define AMDGPU_MAX_JPEG_INSTANCES 2
#define AMDGPU_JPEG_HARVEST_JPEG0 (1 << 0)
#define AMDGPU_JPEG_HARVEST_JPEG1 (1 << 1)
struct amdgpu_jpeg_reg{
unsigned jpeg_pitch;
};
struct amdgpu_jpeg_inst {
struct amdgpu_ring ring_dec;
struct amdgpu_irq_src irq;
struct amdgpu_jpeg_reg external;
};
struct amdgpu_jpeg {
uint8_t num_jpeg_inst;
struct amdgpu_jpeg_inst inst[AMDGPU_MAX_JPEG_INSTANCES];
struct amdgpu_jpeg_reg internal;
unsigned harvest_config;
struct delayed_work idle_work;
enum amd_powergating_state cur_state;
struct mutex jpeg_pg_lock;
atomic_t total_submission_cnt;
};
int amdgpu_jpeg_sw_init(struct amdgpu_device *adev);
int amdgpu_jpeg_sw_fini(struct amdgpu_device *adev);
int amdgpu_jpeg_suspend(struct amdgpu_device *adev);
int amdgpu_jpeg_resume(struct amdgpu_device *adev);
void amdgpu_jpeg_ring_begin_use(struct amdgpu_ring *ring);
void amdgpu_jpeg_ring_end_use(struct amdgpu_ring *ring);
int amdgpu_jpeg_dec_ring_test_ring(struct amdgpu_ring *ring);
int amdgpu_jpeg_dec_ring_test_ib(struct amdgpu_ring *ring, long timeout);
#endif /*__AMDGPU_JPEG_H__*/