2 * Copyright 2014 Advanced Micro Devices, Inc.
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 <christian.koenig@amd.com>
33 #include "amdgpu_trace.h"
35 struct amdgpu_sync_entry
{
36 struct hlist_node node
;
41 * amdgpu_sync_create - zero init sync object
43 * @sync: sync object to initialize
45 * Just clear the sync object for now.
47 void amdgpu_sync_create(struct amdgpu_sync
*sync
)
49 hash_init(sync
->fences
);
50 sync
->last_vm_update
= NULL
;
53 static bool amdgpu_sync_same_dev(struct amdgpu_device
*adev
, struct fence
*f
)
55 struct amdgpu_fence
*a_fence
= to_amdgpu_fence(f
);
56 struct amd_sched_fence
*s_fence
= to_amd_sched_fence(f
);
59 return a_fence
->ring
->adev
== adev
;
62 struct amdgpu_ring
*ring
;
64 ring
= container_of(s_fence
->sched
, struct amdgpu_ring
, sched
);
65 return ring
->adev
== adev
;
71 static bool amdgpu_sync_test_owner(struct fence
*f
, void *owner
)
73 struct amdgpu_fence
*a_fence
= to_amdgpu_fence(f
);
74 struct amd_sched_fence
*s_fence
= to_amd_sched_fence(f
);
76 return s_fence
->owner
== owner
;
78 return a_fence
->owner
== owner
;
82 static void amdgpu_sync_keep_later(struct fence
**keep
, struct fence
*fence
)
84 if (*keep
&& fence_is_later(*keep
, fence
))
88 *keep
= fence_get(fence
);
92 * amdgpu_sync_fence - remember to sync to this fence
94 * @sync: sync object to add fence to
95 * @fence: fence to sync to
98 int amdgpu_sync_fence(struct amdgpu_device
*adev
, struct amdgpu_sync
*sync
,
101 struct amdgpu_sync_entry
*e
;
106 if (amdgpu_sync_same_dev(adev
, f
) &&
107 amdgpu_sync_test_owner(f
, AMDGPU_FENCE_OWNER_VM
))
108 amdgpu_sync_keep_later(&sync
->last_vm_update
, f
);
110 hash_for_each_possible(sync
->fences
, e
, node
, f
->context
) {
111 if (unlikely(e
->fence
->context
!= f
->context
))
114 amdgpu_sync_keep_later(&e
->fence
, f
);
118 e
= kmalloc(sizeof(struct amdgpu_sync_entry
), GFP_KERNEL
);
122 hash_add(sync
->fences
, &e
->node
, f
->context
);
123 e
->fence
= fence_get(f
);
127 static void *amdgpu_sync_get_owner(struct fence
*f
)
129 struct amdgpu_fence
*a_fence
= to_amdgpu_fence(f
);
130 struct amd_sched_fence
*s_fence
= to_amd_sched_fence(f
);
133 return s_fence
->owner
;
135 return a_fence
->owner
;
136 return AMDGPU_FENCE_OWNER_UNDEFINED
;
140 * amdgpu_sync_resv - sync to a reservation object
142 * @sync: sync object to add fences from reservation object to
143 * @resv: reservation object with embedded fence
144 * @shared: true if we should only sync to the exclusive fence
148 int amdgpu_sync_resv(struct amdgpu_device
*adev
,
149 struct amdgpu_sync
*sync
,
150 struct reservation_object
*resv
,
153 struct reservation_object_list
*flist
;
162 /* always sync to the exclusive fence */
163 f
= reservation_object_get_excl(resv
);
164 r
= amdgpu_sync_fence(adev
, sync
, f
);
166 flist
= reservation_object_get_list(resv
);
170 for (i
= 0; i
< flist
->shared_count
; ++i
) {
171 f
= rcu_dereference_protected(flist
->shared
[i
],
172 reservation_object_held(resv
));
173 if (amdgpu_sync_same_dev(adev
, f
)) {
174 /* VM updates are only interesting
175 * for other VM updates and moves.
177 fence_owner
= amdgpu_sync_get_owner(f
);
178 if ((owner
!= AMDGPU_FENCE_OWNER_UNDEFINED
) &&
179 (fence_owner
!= AMDGPU_FENCE_OWNER_UNDEFINED
) &&
180 ((owner
== AMDGPU_FENCE_OWNER_VM
) !=
181 (fence_owner
== AMDGPU_FENCE_OWNER_VM
)))
184 /* Ignore fence from the same owner as
185 * long as it isn't undefined.
187 if (owner
!= AMDGPU_FENCE_OWNER_UNDEFINED
&&
188 fence_owner
== owner
)
192 r
= amdgpu_sync_fence(adev
, sync
, f
);
199 struct fence
*amdgpu_sync_get_fence(struct amdgpu_sync
*sync
)
201 struct amdgpu_sync_entry
*e
;
202 struct hlist_node
*tmp
;
206 hash_for_each_safe(sync
->fences
, i
, tmp
, e
, node
) {
213 if (!fence_is_signaled(f
))
221 int amdgpu_sync_wait(struct amdgpu_sync
*sync
)
223 struct amdgpu_sync_entry
*e
;
224 struct hlist_node
*tmp
;
227 hash_for_each_safe(sync
->fences
, i
, tmp
, e
, node
) {
228 r
= fence_wait(e
->fence
, false);
241 * amdgpu_sync_free - free the sync object
243 * @sync: sync object to use
245 * Free the sync object.
247 void amdgpu_sync_free(struct amdgpu_sync
*sync
)
249 struct amdgpu_sync_entry
*e
;
250 struct hlist_node
*tmp
;
253 hash_for_each_safe(sync
->fences
, i
, tmp
, e
, node
) {
259 fence_put(sync
->last_vm_update
);