diff options
Diffstat (limited to 'drivers/gpu/drm/amd/scheduler/sched_fence.c')
-rw-r--r-- | drivers/gpu/drm/amd/scheduler/sched_fence.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/scheduler/sched_fence.c b/drivers/gpu/drm/amd/scheduler/sched_fence.c new file mode 100644 index 000000000000..e62c37920e11 --- /dev/null +++ b/drivers/gpu/drm/amd/scheduler/sched_fence.c @@ -0,0 +1,81 @@ +/* + * Copyright 2015 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * + */ +#include <linux/kthread.h> +#include <linux/wait.h> +#include <linux/sched.h> +#include <drm/drmP.h> +#include "gpu_scheduler.h" + +struct amd_sched_fence *amd_sched_fence_create(struct amd_sched_entity *s_entity, void *owner) +{ + struct amd_sched_fence *fence = NULL; + unsigned seq; + + fence = kzalloc(sizeof(struct amd_sched_fence), GFP_KERNEL); + if (fence == NULL) + return NULL; + fence->owner = owner; + fence->scheduler = s_entity->scheduler; + spin_lock_init(&fence->lock); + + seq = atomic_inc_return(&s_entity->fence_seq); + fence_init(&fence->base, &amd_sched_fence_ops, &fence->lock, + s_entity->fence_context, seq); + + return fence; +} + +void amd_sched_fence_signal(struct amd_sched_fence *fence) +{ + int ret = fence_signal(&fence->base); + if (!ret) + FENCE_TRACE(&fence->base, "signaled from irq context\n"); + else + FENCE_TRACE(&fence->base, "was already signaled\n"); +} + +static const char *amd_sched_fence_get_driver_name(struct fence *fence) +{ + return "amd_sched"; +} + +static const char *amd_sched_fence_get_timeline_name(struct fence *f) +{ + struct amd_sched_fence *fence = to_amd_sched_fence(f); + return (const char *)fence->scheduler->name; +} + +static bool amd_sched_fence_enable_signaling(struct fence *f) +{ + return true; +} + +const struct fence_ops amd_sched_fence_ops = { + .get_driver_name = amd_sched_fence_get_driver_name, + .get_timeline_name = amd_sched_fence_get_timeline_name, + .enable_signaling = amd_sched_fence_enable_signaling, + .signaled = NULL, + .wait = fence_default_wait, + .release = NULL, +}; |