drivers/gpu/drm/radeon/uvd_v3_1.c

   1 /*
   2  * Copyright 2013 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Christian König <christian.koenig@amd.com>
  23  */
  24
  25 #include "radeon.h"
  26 #include "radeon_asic.h"
  27 #include "nid.h"
  28
  29 /**
  30  * uvd_v3_1_semaphore_emit - emit semaphore command
  31  *
  32  * @rdev: radeon_device pointer
  33  * @ring: radeon_ring pointer
  34  * @semaphore: semaphore to emit commands for
  35  * @emit_wait: true if we should emit a wait command
  36  *
  37  * Emit a semaphore command (either wait or signal) to the UVD ring.
  38  */
  39 bool uvd_v3_1_semaphore_emit(struct radeon_device *rdev,
  40                              struct radeon_ring *ring,
  41                              struct radeon_semaphore *semaphore,
  42                              bool emit_wait)
  43 {
  44         uint64_t addr = semaphore->gpu_addr;
  45
  46         radeon_ring_write(ring, PACKET0(UVD_SEMA_ADDR_LOW, 0));
  47         radeon_ring_write(ring, (addr >> 3) & 0x000FFFFF);
  48
  49         radeon_ring_write(ring, PACKET0(UVD_SEMA_ADDR_HIGH, 0));
  50         radeon_ring_write(ring, (addr >> 23) & 0x000FFFFF);
  51
  52         radeon_ring_write(ring, PACKET0(UVD_SEMA_CMD, 0));
  53         radeon_ring_write(ring, 0x80 | (emit_wait ? 1 : 0));
  54
  55         return true;
  56 }