mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 07:50:53 +07:00
1654b817d8
To workaround bugs and/or certain limits it's sometimes useful to fall back to waiting on fences. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
/*
|
|
* Copyright 2013 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.
|
|
*
|
|
* Authors: Christian König <christian.koenig@amd.com>
|
|
*/
|
|
|
|
#include <drm/drmP.h>
|
|
#include "radeon.h"
|
|
#include "radeon_asic.h"
|
|
#include "nid.h"
|
|
|
|
/**
|
|
* uvd_v3_1_semaphore_emit - emit semaphore command
|
|
*
|
|
* @rdev: radeon_device pointer
|
|
* @ring: radeon_ring pointer
|
|
* @semaphore: semaphore to emit commands for
|
|
* @emit_wait: true if we should emit a wait command
|
|
*
|
|
* Emit a semaphore command (either wait or signal) to the UVD ring.
|
|
*/
|
|
bool uvd_v3_1_semaphore_emit(struct radeon_device *rdev,
|
|
struct radeon_ring *ring,
|
|
struct radeon_semaphore *semaphore,
|
|
bool emit_wait)
|
|
{
|
|
uint64_t addr = semaphore->gpu_addr;
|
|
|
|
radeon_ring_write(ring, PACKET0(UVD_SEMA_ADDR_LOW, 0));
|
|
radeon_ring_write(ring, (addr >> 3) & 0x000FFFFF);
|
|
|
|
radeon_ring_write(ring, PACKET0(UVD_SEMA_ADDR_HIGH, 0));
|
|
radeon_ring_write(ring, (addr >> 23) & 0x000FFFFF);
|
|
|
|
radeon_ring_write(ring, PACKET0(UVD_SEMA_CMD, 0));
|
|
radeon_ring_write(ring, 0x80 | (emit_wait ? 1 : 0));
|
|
|
|
return true;
|
|
}
|