2015-04-21 04:55:21 +08:00
|
|
|
/*
|
|
|
|
* Copyright 2014 Advanced Micro Devices, Inc.
|
|
|
|
* All Rights Reserved.
|
|
|
|
*
|
|
|
|
* 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL
|
|
|
|
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
|
|
|
|
*
|
|
|
|
* The above copyright notice and this permission notice (including the
|
|
|
|
* next paragraph) shall be included in all copies or substantial portions
|
|
|
|
* of the Software.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
/*
|
|
|
|
* Authors:
|
|
|
|
* Christian König <christian.koenig@amd.com>
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <drm/drmP.h>
|
|
|
|
#include "amdgpu.h"
|
|
|
|
#include "amdgpu_trace.h"
|
|
|
|
|
2015-08-20 14:47:40 +08:00
|
|
|
struct amdgpu_sync_entry {
|
|
|
|
struct hlist_node node;
|
|
|
|
struct fence *fence;
|
|
|
|
};
|
|
|
|
|
2016-02-16 18:24:58 +08:00
|
|
|
static struct kmem_cache *amdgpu_sync_slab;
|
|
|
|
|
2015-04-21 04:55:21 +08:00
|
|
|
/**
|
|
|
|
* amdgpu_sync_create - zero init sync object
|
|
|
|
*
|
|
|
|
* @sync: sync object to initialize
|
|
|
|
*
|
|
|
|
* Just clear the sync object for now.
|
|
|
|
*/
|
|
|
|
void amdgpu_sync_create(struct amdgpu_sync *sync)
|
|
|
|
{
|
2015-08-20 14:47:40 +08:00
|
|
|
hash_init(sync->fences);
|
2015-04-21 04:55:21 +08:00
|
|
|
sync->last_vm_update = NULL;
|
|
|
|
}
|
|
|
|
|
2016-02-16 23:23:02 +08:00
|
|
|
/**
|
|
|
|
* amdgpu_sync_same_dev - test if fence belong to us
|
|
|
|
*
|
|
|
|
* @adev: amdgpu device to use for the test
|
|
|
|
* @f: fence to test
|
|
|
|
*
|
|
|
|
* Test if the fence was issued by us.
|
|
|
|
*/
|
2015-08-20 18:33:59 +08:00
|
|
|
static bool amdgpu_sync_same_dev(struct amdgpu_device *adev, struct fence *f)
|
|
|
|
{
|
|
|
|
struct amd_sched_fence *s_fence = to_amd_sched_fence(f);
|
|
|
|
|
2015-09-09 02:22:31 +08:00
|
|
|
if (s_fence) {
|
|
|
|
struct amdgpu_ring *ring;
|
|
|
|
|
|
|
|
ring = container_of(s_fence->sched, struct amdgpu_ring, sched);
|
|
|
|
return ring->adev == adev;
|
|
|
|
}
|
|
|
|
|
2015-08-20 18:33:59 +08:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2016-02-16 23:23:02 +08:00
|
|
|
/**
|
|
|
|
* amdgpu_sync_get_owner - extract the owner of a fence
|
|
|
|
*
|
|
|
|
* @fence: fence get the owner from
|
|
|
|
*
|
|
|
|
* Extract who originally created the fence.
|
|
|
|
*/
|
|
|
|
static void *amdgpu_sync_get_owner(struct fence *f)
|
2015-08-20 18:33:59 +08:00
|
|
|
{
|
|
|
|
struct amd_sched_fence *s_fence = to_amd_sched_fence(f);
|
2016-02-16 23:23:02 +08:00
|
|
|
|
2015-08-20 18:33:59 +08:00
|
|
|
if (s_fence)
|
2016-02-16 23:23:02 +08:00
|
|
|
return s_fence->owner;
|
2016-02-16 17:57:10 +08:00
|
|
|
|
2016-02-16 23:23:02 +08:00
|
|
|
return AMDGPU_FENCE_OWNER_UNDEFINED;
|
2015-08-20 18:33:59 +08:00
|
|
|
}
|
|
|
|
|
2016-02-16 23:23:02 +08:00
|
|
|
/**
|
|
|
|
* amdgpu_sync_keep_later - Keep the later fence
|
|
|
|
*
|
|
|
|
* @keep: existing fence to test
|
|
|
|
* @fence: new fence
|
|
|
|
*
|
|
|
|
* Either keep the existing fence or the new one, depending which one is later.
|
|
|
|
*/
|
2015-10-22 16:53:16 +08:00
|
|
|
static void amdgpu_sync_keep_later(struct fence **keep, struct fence *fence)
|
|
|
|
{
|
|
|
|
if (*keep && fence_is_later(*keep, fence))
|
|
|
|
return;
|
|
|
|
|
|
|
|
fence_put(*keep);
|
|
|
|
*keep = fence_get(fence);
|
|
|
|
}
|
|
|
|
|
2015-04-21 04:55:21 +08:00
|
|
|
/**
|
2015-07-07 04:06:40 +08:00
|
|
|
* amdgpu_sync_fence - remember to sync to this fence
|
2015-04-21 04:55:21 +08:00
|
|
|
*
|
|
|
|
* @sync: sync object to add fence to
|
|
|
|
* @fence: fence to sync to
|
|
|
|
*
|
|
|
|
*/
|
2015-07-07 04:06:40 +08:00
|
|
|
int amdgpu_sync_fence(struct amdgpu_device *adev, struct amdgpu_sync *sync,
|
|
|
|
struct fence *f)
|
2015-04-21 04:55:21 +08:00
|
|
|
{
|
2015-08-20 14:47:40 +08:00
|
|
|
struct amdgpu_sync_entry *e;
|
2015-04-21 04:55:21 +08:00
|
|
|
|
2015-07-07 04:06:40 +08:00
|
|
|
if (!f)
|
|
|
|
return 0;
|
|
|
|
|
2015-08-20 18:33:59 +08:00
|
|
|
if (amdgpu_sync_same_dev(adev, f) &&
|
2016-02-16 23:23:02 +08:00
|
|
|
amdgpu_sync_get_owner(f) == AMDGPU_FENCE_OWNER_VM)
|
2015-10-22 16:53:16 +08:00
|
|
|
amdgpu_sync_keep_later(&sync->last_vm_update, f);
|
2015-08-20 18:33:59 +08:00
|
|
|
|
2016-01-18 21:49:45 +08:00
|
|
|
hash_for_each_possible(sync->fences, e, node, f->context) {
|
|
|
|
if (unlikely(e->fence->context != f->context))
|
|
|
|
continue;
|
2015-08-20 14:47:40 +08:00
|
|
|
|
2016-01-18 21:49:45 +08:00
|
|
|
amdgpu_sync_keep_later(&e->fence, f);
|
2015-08-20 14:47:40 +08:00
|
|
|
return 0;
|
|
|
|
}
|
2015-04-21 04:55:21 +08:00
|
|
|
|
2016-02-16 18:24:58 +08:00
|
|
|
e = kmem_cache_alloc(amdgpu_sync_slab, GFP_KERNEL);
|
2016-01-18 21:49:45 +08:00
|
|
|
if (!e)
|
|
|
|
return -ENOMEM;
|
2015-04-21 04:55:21 +08:00
|
|
|
|
2016-01-18 21:49:45 +08:00
|
|
|
hash_add(sync->fences, &e->node, f->context);
|
|
|
|
e->fence = fence_get(f);
|
2015-07-07 04:06:40 +08:00
|
|
|
return 0;
|
2015-04-21 04:55:21 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2016-01-15 11:05:21 +08:00
|
|
|
* amdgpu_sync_resv - sync to a reservation object
|
2015-04-21 04:55:21 +08:00
|
|
|
*
|
|
|
|
* @sync: sync object to add fences from reservation object to
|
|
|
|
* @resv: reservation object with embedded fence
|
|
|
|
* @shared: true if we should only sync to the exclusive fence
|
|
|
|
*
|
2016-01-15 11:05:21 +08:00
|
|
|
* Sync to the fence
|
2015-04-21 04:55:21 +08:00
|
|
|
*/
|
|
|
|
int amdgpu_sync_resv(struct amdgpu_device *adev,
|
|
|
|
struct amdgpu_sync *sync,
|
|
|
|
struct reservation_object *resv,
|
|
|
|
void *owner)
|
|
|
|
{
|
|
|
|
struct reservation_object_list *flist;
|
|
|
|
struct fence *f;
|
2015-08-24 16:59:54 +08:00
|
|
|
void *fence_owner;
|
2015-04-21 04:55:21 +08:00
|
|
|
unsigned i;
|
|
|
|
int r = 0;
|
|
|
|
|
2015-05-12 23:17:19 +08:00
|
|
|
if (resv == NULL)
|
|
|
|
return -EINVAL;
|
|
|
|
|
2015-04-21 04:55:21 +08:00
|
|
|
/* always sync to the exclusive fence */
|
|
|
|
f = reservation_object_get_excl(resv);
|
2015-07-07 04:06:40 +08:00
|
|
|
r = amdgpu_sync_fence(adev, sync, f);
|
2015-04-21 04:55:21 +08:00
|
|
|
|
|
|
|
flist = reservation_object_get_list(resv);
|
|
|
|
if (!flist || r)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
for (i = 0; i < flist->shared_count; ++i) {
|
|
|
|
f = rcu_dereference_protected(flist->shared[i],
|
|
|
|
reservation_object_held(resv));
|
2015-08-24 16:59:54 +08:00
|
|
|
if (amdgpu_sync_same_dev(adev, f)) {
|
2015-07-27 21:40:35 +08:00
|
|
|
/* VM updates are only interesting
|
|
|
|
* for other VM updates and moves.
|
|
|
|
*/
|
2015-08-24 16:59:54 +08:00
|
|
|
fence_owner = amdgpu_sync_get_owner(f);
|
2015-10-28 00:28:24 +08:00
|
|
|
if ((owner != AMDGPU_FENCE_OWNER_UNDEFINED) &&
|
|
|
|
(fence_owner != AMDGPU_FENCE_OWNER_UNDEFINED) &&
|
2015-07-27 21:40:35 +08:00
|
|
|
((owner == AMDGPU_FENCE_OWNER_VM) !=
|
2015-08-24 16:59:54 +08:00
|
|
|
(fence_owner == AMDGPU_FENCE_OWNER_VM)))
|
2015-07-07 04:06:40 +08:00
|
|
|
continue;
|
|
|
|
|
2015-07-27 21:40:35 +08:00
|
|
|
/* Ignore fence from the same owner as
|
|
|
|
* long as it isn't undefined.
|
|
|
|
*/
|
|
|
|
if (owner != AMDGPU_FENCE_OWNER_UNDEFINED &&
|
2015-08-24 16:59:54 +08:00
|
|
|
fence_owner == owner)
|
2015-07-27 21:40:35 +08:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
2015-07-07 04:06:40 +08:00
|
|
|
r = amdgpu_sync_fence(adev, sync, f);
|
|
|
|
if (r)
|
|
|
|
break;
|
2015-04-21 04:55:21 +08:00
|
|
|
}
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2015-08-25 17:05:36 +08:00
|
|
|
struct fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync)
|
|
|
|
{
|
|
|
|
struct amdgpu_sync_entry *e;
|
|
|
|
struct hlist_node *tmp;
|
|
|
|
struct fence *f;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
hash_for_each_safe(sync->fences, i, tmp, e, node) {
|
|
|
|
|
|
|
|
f = e->fence;
|
|
|
|
|
|
|
|
hash_del(&e->node);
|
2016-02-16 18:24:58 +08:00
|
|
|
kmem_cache_free(amdgpu_sync_slab, e);
|
2015-08-25 17:05:36 +08:00
|
|
|
|
|
|
|
if (!fence_is_signaled(f))
|
|
|
|
return f;
|
|
|
|
|
|
|
|
fence_put(f);
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2015-08-20 14:47:40 +08:00
|
|
|
int amdgpu_sync_wait(struct amdgpu_sync *sync)
|
|
|
|
{
|
|
|
|
struct amdgpu_sync_entry *e;
|
|
|
|
struct hlist_node *tmp;
|
|
|
|
int i, r;
|
|
|
|
|
|
|
|
hash_for_each_safe(sync->fences, i, tmp, e, node) {
|
|
|
|
r = fence_wait(e->fence, false);
|
|
|
|
if (r)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
hash_del(&e->node);
|
|
|
|
fence_put(e->fence);
|
2016-02-16 18:24:58 +08:00
|
|
|
kmem_cache_free(amdgpu_sync_slab, e);
|
2015-08-20 14:47:40 +08:00
|
|
|
}
|
2015-09-05 17:12:27 +08:00
|
|
|
|
2015-08-20 14:47:40 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-04-21 04:55:21 +08:00
|
|
|
/**
|
|
|
|
* amdgpu_sync_free - free the sync object
|
|
|
|
*
|
|
|
|
* @sync: sync object to use
|
|
|
|
*
|
2016-01-15 11:05:21 +08:00
|
|
|
* Free the sync object.
|
2015-04-21 04:55:21 +08:00
|
|
|
*/
|
2016-02-03 22:11:39 +08:00
|
|
|
void amdgpu_sync_free(struct amdgpu_sync *sync)
|
2015-04-21 04:55:21 +08:00
|
|
|
{
|
2015-08-20 14:47:40 +08:00
|
|
|
struct amdgpu_sync_entry *e;
|
|
|
|
struct hlist_node *tmp;
|
2015-04-21 04:55:21 +08:00
|
|
|
unsigned i;
|
|
|
|
|
2015-08-20 14:47:40 +08:00
|
|
|
hash_for_each_safe(sync->fences, i, tmp, e, node) {
|
|
|
|
hash_del(&e->node);
|
|
|
|
fence_put(e->fence);
|
2016-02-16 18:24:58 +08:00
|
|
|
kmem_cache_free(amdgpu_sync_slab, e);
|
2015-08-20 14:47:40 +08:00
|
|
|
}
|
|
|
|
|
2015-08-20 18:33:59 +08:00
|
|
|
fence_put(sync->last_vm_update);
|
2015-04-21 04:55:21 +08:00
|
|
|
}
|
2016-02-16 18:24:58 +08:00
|
|
|
|
|
|
|
/**
|
|
|
|
* amdgpu_sync_init - init sync object subsystem
|
|
|
|
*
|
|
|
|
* Allocate the slab allocator.
|
|
|
|
*/
|
|
|
|
int amdgpu_sync_init(void)
|
|
|
|
{
|
|
|
|
amdgpu_sync_slab = kmem_cache_create(
|
|
|
|
"amdgpu_sync", sizeof(struct amdgpu_sync_entry), 0,
|
|
|
|
SLAB_HWCACHE_ALIGN, NULL);
|
|
|
|
if (!amdgpu_sync_slab)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* amdgpu_sync_fini - fini sync object subsystem
|
|
|
|
*
|
|
|
|
* Free the slab allocator.
|
|
|
|
*/
|
|
|
|
void amdgpu_sync_fini(void)
|
|
|
|
{
|
|
|
|
kmem_cache_destroy(amdgpu_sync_slab);
|
|
|
|
}
|