2 * Copyright 2011 Christian König.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
16 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
17 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
18 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
19 * USE OR OTHER DEALINGS IN THE SOFTWARE.
21 * The above copyright notice and this permission notice (including the
22 * next paragraph) shall be included in all copies or substantial portions
28 * Christian König <deathsimple@vodafone.de>
33 #include "radeon_trace.h"
36 int radeon_semaphore_create(struct radeon_device *rdev,
37 struct radeon_semaphore **semaphore)
41 *semaphore = kmalloc(sizeof(struct radeon_semaphore), M_DRM, GFP_KERNEL);
42 if (*semaphore == NULL) {
45 r = radeon_sa_bo_new(rdev, &rdev->ring_tmp_bo,
46 &(*semaphore)->sa_bo, 8, 8);
52 (*semaphore)->waiters = 0;
53 (*semaphore)->gpu_addr = radeon_sa_bo_gpu_addr((*semaphore)->sa_bo);
55 *((uint64_t *)radeon_sa_bo_cpu_addr((*semaphore)->sa_bo)) = 0;
60 bool radeon_semaphore_emit_signal(struct radeon_device *rdev, int ridx,
61 struct radeon_semaphore *semaphore)
63 struct radeon_ring *ring = &rdev->ring[ridx];
66 trace_radeon_semaphore_signale(ridx, semaphore);
69 if (radeon_semaphore_ring_emit(rdev, ridx, ring, semaphore, false)) {
72 /* for debugging lockup only, used by sysfs debug files */
73 ring->last_semaphore_signal_addr = semaphore->gpu_addr;
79 bool radeon_semaphore_emit_wait(struct radeon_device *rdev, int ridx,
80 struct radeon_semaphore *semaphore)
82 struct radeon_ring *ring = &rdev->ring[ridx];
85 trace_radeon_semaphore_wait(ridx, semaphore);
88 if (radeon_semaphore_ring_emit(rdev, ridx, ring, semaphore, true)) {
91 /* for debugging lockup only, used by sysfs debug files */
92 ring->last_semaphore_wait_addr = semaphore->gpu_addr;
98 void radeon_semaphore_free(struct radeon_device *rdev,
99 struct radeon_semaphore **semaphore,
100 struct radeon_fence *fence)
102 if (semaphore == NULL || *semaphore == NULL) {
105 if ((*semaphore)->waiters > 0) {
106 dev_err(rdev->dev, "semaphore %p has more waiters than signalers,"
107 " hardware lockup imminent!\n", *semaphore);
109 radeon_sa_bo_free(rdev, &(*semaphore)->sa_bo, fence);