1 /* $NetBSD: radeon_uvd_v3_1.c,v 1.2 2021/12/18 23:45:43 riastradh Exp $ */
2
3 /*
4 * Copyright 2013 Advanced Micro Devices, Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Christian König <christian.koenig@amd.com>
25 */
26
27 #include <sys/cdefs.h>
28 __KERNEL_RCSID(0, "$NetBSD: radeon_uvd_v3_1.c,v 1.2 2021/12/18 23:45:43 riastradh Exp $");
29
30 #include "radeon.h"
31 #include "radeon_asic.h"
32 #include "nid.h"
33
34 /**
35 * uvd_v3_1_semaphore_emit - emit semaphore command
36 *
37 * @rdev: radeon_device pointer
38 * @ring: radeon_ring pointer
39 * @semaphore: semaphore to emit commands for
40 * @emit_wait: true if we should emit a wait command
41 *
42 * Emit a semaphore command (either wait or signal) to the UVD ring.
43 */
uvd_v3_1_semaphore_emit(struct radeon_device * rdev,struct radeon_ring * ring,struct radeon_semaphore * semaphore,bool emit_wait)44 bool uvd_v3_1_semaphore_emit(struct radeon_device *rdev,
45 struct radeon_ring *ring,
46 struct radeon_semaphore *semaphore,
47 bool emit_wait)
48 {
49 uint64_t addr = semaphore->gpu_addr;
50
51 radeon_ring_write(ring, PACKET0(UVD_SEMA_ADDR_LOW, 0));
52 radeon_ring_write(ring, (addr >> 3) & 0x000FFFFF);
53
54 radeon_ring_write(ring, PACKET0(UVD_SEMA_ADDR_HIGH, 0));
55 radeon_ring_write(ring, (addr >> 23) & 0x000FFFFF);
56
57 radeon_ring_write(ring, PACKET0(UVD_SEMA_CMD, 0));
58 radeon_ring_write(ring, 0x80 | (emit_wait ? 1 : 0));
59
60 return true;
61 }
62