Line data    Source code

       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 <dev/pci/drm/drmP.h>
      26             : #include "radeon.h"
      27             : #include "radeon_asic.h"
      28             : #include "nid.h"
      29             : 
      30             : /**
      31             :  * uvd_v3_1_semaphore_emit - emit semaphore command
      32             :  *
      33             :  * @rdev: radeon_device pointer
      34             :  * @ring: radeon_ring pointer
      35             :  * @semaphore: semaphore to emit commands for
      36             :  * @emit_wait: true if we should emit a wait command
      37             :  *
      38             :  * Emit a semaphore command (either wait or signal) to the UVD ring.
      39             :  */
      40           0 : bool uvd_v3_1_semaphore_emit(struct radeon_device *rdev,
      41             :                              struct radeon_ring *ring,
      42             :                              struct radeon_semaphore *semaphore,
      43             :                              bool emit_wait)
      44             : {
      45           0 :         uint64_t addr = semaphore->gpu_addr;
      46             : 
      47           0 :         radeon_ring_write(ring, PACKET0(UVD_SEMA_ADDR_LOW, 0));
      48           0 :         radeon_ring_write(ring, (addr >> 3) & 0x000FFFFF);
      49             : 
      50           0 :         radeon_ring_write(ring, PACKET0(UVD_SEMA_ADDR_HIGH, 0));
      51           0 :         radeon_ring_write(ring, (addr >> 23) & 0x000FFFFF);
      52             : 
      53           0 :         radeon_ring_write(ring, PACKET0(UVD_SEMA_CMD, 0));
      54           0 :         radeon_ring_write(ring, 0x80 | (emit_wait ? 1 : 0));
      55             : 
      56           0 :         return true;
      57             : }