2 * Copyright © 2018 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included
12 * in all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20 * DEALINGS IN THE SOFTWARE.
26 * Fences for driver and IPC serialisation, scheduling and synchronisation.
29 #include "util/u_inlines.h"
31 #include "iris_batch.h"
32 #include "iris_bufmgr.h"
33 #include "iris_context.h"
34 #include "iris_fence.h"
35 #include "iris_screen.h"
38 gem_syncobj_create(int fd
, uint32_t flags
)
40 struct drm_syncobj_create args
= {
44 drm_ioctl(fd
, DRM_IOCTL_SYNCOBJ_CREATE
, &args
);
50 gem_syncobj_destroy(int fd
, uint32_t handle
)
52 struct drm_syncobj_destroy args
= {
56 drm_ioctl(fd
, DRM_IOCTL_SYNCOBJ_DESTROY
, &args
);
60 * Make a new sync-point.
63 iris_create_syncpt(struct iris_screen
*screen
)
65 struct iris_syncpt
*syncpt
= malloc(sizeof(*syncpt
));
70 syncpt
->handle
= gem_syncobj_create(screen
->fd
, 0);
71 assert(syncpt
->handle
);
73 pipe_reference_init(&syncpt
->ref
, 1);
79 iris_syncpt_destroy(struct iris_screen
*screen
, struct iris_syncpt
*syncpt
)
81 gem_syncobj_destroy(screen
->fd
, syncpt
->handle
);
86 * Add a sync-point to the batch, with the given flags.
88 * \p flags One of I915_EXEC_FENCE_WAIT or I915_EXEC_FENCE_SIGNAL.
91 iris_batch_add_syncpt(struct iris_batch
*batch
,
92 struct iris_syncpt
*syncpt
,
95 struct drm_i915_gem_exec_fence
*fence
=
96 util_dynarray_grow(&batch
->exec_fences
, sizeof(*fence
));
98 *fence
= (struct drm_i915_gem_exec_fence
) {
99 .handle
= syncpt
->handle
,
103 struct iris_syncpt
**store
=
104 util_dynarray_grow(&batch
->syncpts
, sizeof(*store
));
107 iris_syncpt_reference(batch
->screen
, store
, syncpt
);
110 /* ------------------------------------------------------------------- */
112 struct pipe_fence_handle
{
113 struct pipe_reference ref
;
114 struct iris_syncpt
*syncpt
[IRIS_BATCH_COUNT
];
119 iris_fence_destroy(struct pipe_screen
*p_screen
,
120 struct pipe_fence_handle
*fence
)
122 struct iris_screen
*screen
= (struct iris_screen
*)p_screen
;
124 for (unsigned i
= 0; i
< fence
->count
; i
++)
125 iris_syncpt_reference(screen
, &fence
->syncpt
[i
], NULL
);
131 iris_fence_reference(struct pipe_screen
*p_screen
,
132 struct pipe_fence_handle
**dst
,
133 struct pipe_fence_handle
*src
)
135 if (pipe_reference(&(*dst
)->ref
, &src
->ref
))
136 iris_fence_destroy(p_screen
, *dst
);
142 iris_check_syncpt(struct pipe_screen
*p_screen
,
143 struct iris_syncpt
*syncpt
)
148 struct iris_screen
*screen
= (struct iris_screen
*)p_screen
;
149 struct drm_syncobj_wait args
= {
150 .handles
= (uintptr_t)&syncpt
->handle
,
153 return drm_ioctl(screen
->fd
, DRM_IOCTL_SYNCOBJ_WAIT
, &args
);
157 iris_fence_flush(struct pipe_context
*ctx
,
158 struct pipe_fence_handle
**out_fence
,
161 struct iris_screen
*screen
= (void *) ctx
->screen
;
162 struct iris_context
*ice
= (struct iris_context
*)ctx
;
164 /* XXX PIPE_FLUSH_DEFERRED */
165 for (unsigned i
= 0; i
< IRIS_BATCH_COUNT
; i
++)
166 iris_batch_flush(&ice
->batches
[i
]);
171 struct pipe_fence_handle
*fence
= calloc(1, sizeof(*fence
));
175 pipe_reference_init(&fence
->ref
, 1);
177 for (unsigned b
= 0; b
< IRIS_BATCH_COUNT
; b
++) {
178 if (!iris_check_syncpt(ctx
->screen
, ice
->batches
[b
].last_syncpt
))
181 iris_syncpt_reference(screen
, &fence
->syncpt
[fence
->count
++],
182 ice
->batches
[b
].last_syncpt
);
188 iris_fence_await(struct pipe_context
*ctx
,
189 struct pipe_fence_handle
*fence
)
191 struct iris_context
*ice
= (struct iris_context
*)ctx
;
193 for (unsigned b
= 0; b
< IRIS_BATCH_COUNT
; b
++) {
194 for (unsigned i
= 0; i
< fence
->count
; i
++) {
195 iris_batch_add_syncpt(&ice
->batches
[b
], fence
->syncpt
[i
],
196 I915_EXEC_FENCE_WAIT
);
201 #define NSEC_PER_SEC (1000 * USEC_PER_SEC)
202 #define USEC_PER_SEC (1000 * MSEC_PER_SEC)
203 #define MSEC_PER_SEC (1000)
206 rel2abs(uint64_t timeout
)
214 if (timeout
== PIPE_TIMEOUT_INFINITE
)
217 clock_gettime(CLOCK_MONOTONIC
, &ts
);
218 now
= ts
.tv_sec
* NSEC_PER_SEC
+ ts
.tv_nsec
;
220 if (now
> INT64_MAX
- timeout
)
223 return now
+ timeout
;
227 iris_fence_finish(struct pipe_screen
*p_screen
,
228 struct pipe_context
*ctx
,
229 struct pipe_fence_handle
*fence
,
232 struct iris_screen
*screen
= (struct iris_screen
*)p_screen
;
237 uint32_t handles
[ARRAY_SIZE(fence
->syncpt
)];
238 for (unsigned i
= 0; i
< fence
->count
; i
++)
239 handles
[i
] = fence
->syncpt
[i
]->handle
;
241 struct drm_syncobj_wait args
= {
242 .handles
= (uintptr_t)handles
,
243 .count_handles
= fence
->count
,
244 .timeout_nsec
= rel2abs(timeout
), /* XXX */
245 .flags
= DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL
247 return drm_ioctl(screen
->fd
, DRM_IOCTL_SYNCOBJ_WAIT
, &args
) == 0;
250 #ifndef SYNC_IOC_MAGIC
251 /* duplicated from linux/sync_file.h to avoid build-time dependency
252 * on new (v4.7) kernel headers. Once distro's are mostly using
253 * something newer than v4.7 drop this and #include <linux/sync_file.h>
256 struct sync_merge_data
{
264 #define SYNC_IOC_MAGIC '>'
265 #define SYNC_IOC_MERGE _IOWR(SYNC_IOC_MAGIC, 3, struct sync_merge_data)
269 sync_merge_fd(int sync_fd
, int new_fd
)
277 struct sync_merge_data args
= {
278 .name
= "iris fence",
283 drm_ioctl(sync_fd
, SYNC_IOC_MERGE
, &args
);
291 iris_fence_get_fd(struct pipe_screen
*p_screen
,
292 struct pipe_fence_handle
*fence
)
294 struct iris_screen
*screen
= (struct iris_screen
*)p_screen
;
297 for (unsigned i
= 0; i
< fence
->count
; i
++) {
298 struct drm_syncobj_handle args
= {
299 .handle
= fence
->syncpt
[i
]->handle
,
300 .flags
= DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE
,
304 drm_ioctl(screen
->fd
, DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD
, &args
);
305 fd
= sync_merge_fd(fd
, args
.fd
);
312 iris_fence_create_fd(struct pipe_context
*ctx
,
313 struct pipe_fence_handle
**out
,
315 enum pipe_fd_type type
)
317 assert(type
== PIPE_FD_TYPE_NATIVE_SYNC
);
319 struct iris_screen
*screen
= (struct iris_screen
*)ctx
->screen
;
320 struct drm_syncobj_handle args
= {
321 .flags
= DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_IMPORT_SYNC_FILE
,
324 drm_ioctl(screen
->fd
, DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE
, &args
);
326 struct iris_syncpt
*syncpt
= malloc(sizeof(*syncpt
));
327 syncpt
->handle
= args
.handle
;
328 pipe_reference_init(&syncpt
->ref
, 1);
330 struct pipe_fence_handle
*fence
= malloc(sizeof(*fence
));
331 pipe_reference_init(&fence
->ref
, 1);
332 fence
->syncpt
[0] = syncpt
;
339 iris_init_screen_fence_functions(struct pipe_screen
*screen
)
341 screen
->fence_reference
= iris_fence_reference
;
342 screen
->fence_finish
= iris_fence_finish
;
343 screen
->fence_get_fd
= iris_fence_get_fd
;
347 iris_init_context_fence_functions(struct pipe_context
*ctx
)
349 ctx
->flush
= iris_fence_flush
;
350 ctx
->create_fence_fd
= iris_fence_create_fd
;
351 ctx
->fence_server_sync
= iris_fence_await
;