58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
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/*
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* Copyright 2013 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Christian König <christian.koenig@amd.com>
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*/
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#include <drm/drmP.h>
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#include "radeon.h"
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#include "radeon_asic.h"
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#include "nid.h"
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/**
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* uvd_v3_1_semaphore_emit - emit semaphore command
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*
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* @rdev: radeon_device pointer
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* @ring: radeon_ring pointer
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* @semaphore: semaphore to emit commands for
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* @emit_wait: true if we should emit a wait command
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*
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* Emit a semaphore command (either wait or signal) to the UVD ring.
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*/
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bool uvd_v3_1_semaphore_emit(struct radeon_device *rdev,
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struct radeon_ring *ring,
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struct radeon_semaphore *semaphore,
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bool emit_wait)
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{
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uint64_t addr = semaphore->gpu_addr;
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radeon_ring_write(ring, PACKET0(UVD_SEMA_ADDR_LOW, 0));
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radeon_ring_write(ring, (addr >> 3) & 0x000FFFFF);
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radeon_ring_write(ring, PACKET0(UVD_SEMA_ADDR_HIGH, 0));
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radeon_ring_write(ring, (addr >> 23) & 0x000FFFFF);
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radeon_ring_write(ring, PACKET0(UVD_SEMA_CMD, 0));
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radeon_ring_write(ring, 0x80 | (emit_wait ? 1 : 0));
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return true;
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}
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