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authorChristian König <[email protected]>2011-01-08 13:24:36 +0100
committerChristian König <[email protected]>2011-01-08 13:24:36 +0100
commit72e30991559017c16d48569e612dbc0970e3b9ca (patch)
tree297326fa77f35b2b6f7d7d80a019562fd0facb06 /src/gallium/drivers/nvc0/nvc0_fence.c
parentef4def1d9a2a48c7e32ea3e6bf0294470dfbf4c8 (diff)
parentd8cfe464424b41bd986276e19427f0079778bf8f (diff)
Merge remote branch 'origin/master' into pipe-video
Conflicts: configure.ac src/gallium/drivers/r600/eg_asm.c src/gallium/drivers/r600/r600_asm.c src/gallium/drivers/r600/r600_asm.h src/gallium/include/pipe/p_format.h src/gallium/targets/dri-nouveau/Makefile
Diffstat (limited to 'src/gallium/drivers/nvc0/nvc0_fence.c')
-rw-r--r--src/gallium/drivers/nvc0/nvc0_fence.c202
1 files changed, 202 insertions, 0 deletions
diff --git a/src/gallium/drivers/nvc0/nvc0_fence.c b/src/gallium/drivers/nvc0/nvc0_fence.c
new file mode 100644
index 00000000000..7c214ca9a75
--- /dev/null
+++ b/src/gallium/drivers/nvc0/nvc0_fence.c
@@ -0,0 +1,202 @@
+/*
+ * Copyright 2010 Christoph Bumiller
+ *
+ * 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 AUTHORS 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 "nvc0_fence.h"
+#include "nvc0_context.h"
+#include "nvc0_screen.h"
+
+#ifdef PIPE_OS_UNIX
+#include <sched.h>
+#endif
+
+boolean
+nvc0_screen_fence_new(struct nvc0_screen *screen, struct nvc0_fence **fence,
+ boolean emit)
+{
+ *fence = CALLOC_STRUCT(nvc0_fence);
+ if (!*fence)
+ return FALSE;
+
+ (*fence)->screen = screen;
+ (*fence)->ref = 1;
+
+ if (emit)
+ nvc0_fence_emit(*fence);
+
+ return TRUE;
+}
+
+void
+nvc0_fence_emit(struct nvc0_fence *fence)
+{
+ struct nvc0_screen *screen = fence->screen;
+ struct nouveau_channel *chan = screen->base.channel;
+
+ fence->sequence = ++screen->fence.sequence;
+
+ assert(fence->state == NVC0_FENCE_STATE_AVAILABLE);
+
+ BEGIN_RING(chan, RING_3D(QUERY_ADDRESS_HIGH), 4);
+ OUT_RELOCh(chan, screen->fence.bo, 0, NOUVEAU_BO_WR);
+ OUT_RELOCl(chan, screen->fence.bo, 0, NOUVEAU_BO_WR);
+ OUT_RING (chan, fence->sequence);
+ OUT_RING (chan, NVC0_3D_QUERY_GET_FENCE);
+
+ ++fence->ref;
+
+ if (screen->fence.tail)
+ screen->fence.tail->next = fence;
+ else
+ screen->fence.head = fence;
+
+ screen->fence.tail = fence;
+
+ fence->state = NVC0_FENCE_STATE_EMITTED;
+}
+
+static void
+nvc0_fence_trigger_release_buffers(struct nvc0_fence *fence);
+
+void
+nvc0_fence_del(struct nvc0_fence *fence)
+{
+ struct nvc0_fence *it;
+ struct nvc0_screen *screen = fence->screen;
+
+ if (fence->state == NVC0_FENCE_STATE_EMITTED) {
+ if (fence == screen->fence.head) {
+ screen->fence.head = fence->next;
+ if (!screen->fence.head)
+ screen->fence.tail = NULL;
+ } else {
+ for (it = screen->fence.head; it && it->next != fence; it = it->next);
+ it->next = fence->next;
+ if (screen->fence.tail == fence)
+ screen->fence.tail = it;
+ }
+ }
+
+ if (fence->buffers) {
+ debug_printf("WARNING: deleting fence with buffers "
+ "still hooked to it !\n");
+ nvc0_fence_trigger_release_buffers(fence);
+ }
+
+ FREE(fence);
+}
+
+static void
+nvc0_fence_trigger_release_buffers(struct nvc0_fence *fence)
+{
+ struct nvc0_mm_allocation *alloc = fence->buffers;
+
+ while (alloc) {
+ struct nvc0_mm_allocation *next = alloc->next;
+ nvc0_mm_free(alloc);
+ alloc = next;
+ };
+ fence->buffers = NULL;
+}
+
+static void
+nvc0_screen_fence_update(struct nvc0_screen *screen)
+{
+ struct nvc0_fence *fence;
+ struct nvc0_fence *next = NULL;
+ uint32_t sequence = screen->fence.map[0];
+
+ if (screen->fence.sequence_ack == sequence)
+ return;
+ screen->fence.sequence_ack = sequence;
+
+ for (fence = screen->fence.head; fence; fence = next) {
+ next = fence->next;
+ sequence = fence->sequence;
+
+ fence->state = NVC0_FENCE_STATE_SIGNALLED;
+
+ if (fence->buffers)
+ nvc0_fence_trigger_release_buffers(fence);
+
+ nvc0_fence_reference(&fence, NULL);
+
+ if (sequence == screen->fence.sequence_ack)
+ break;
+ }
+ screen->fence.head = next;
+ if (!next)
+ screen->fence.tail = NULL;
+}
+
+#define NVC0_FENCE_MAX_SPINS (1 << 17)
+
+boolean
+nvc0_fence_signalled(struct nvc0_fence *fence)
+{
+ struct nvc0_screen *screen = fence->screen;
+
+ if (fence->state == NVC0_FENCE_STATE_EMITTED)
+ nvc0_screen_fence_update(screen);
+
+ return fence->state == NVC0_FENCE_STATE_SIGNALLED;
+}
+
+boolean
+nvc0_fence_wait(struct nvc0_fence *fence)
+{
+ struct nvc0_screen *screen = fence->screen;
+ int spins = 0;
+
+ if (fence->state == NVC0_FENCE_STATE_AVAILABLE) {
+ nvc0_fence_emit(fence);
+
+ FIRE_RING(screen->base.channel);
+
+ if (fence == screen->fence.current)
+ nvc0_screen_fence_new(screen, &screen->fence.current, FALSE);
+ }
+
+ do {
+ nvc0_screen_fence_update(screen);
+
+ if (fence->state == NVC0_FENCE_STATE_SIGNALLED)
+ return TRUE;
+ spins++;
+#ifdef PIPE_OS_UNIX
+ if (!(spins % 8)) /* donate a few cycles */
+ sched_yield();
+#endif
+ } while (spins < NVC0_FENCE_MAX_SPINS);
+
+ if (spins > 9000)
+ NOUVEAU_ERR("fence %x: been spinning too long\n", fence->sequence);
+
+ return FALSE;
+}
+
+void
+nvc0_screen_fence_next(struct nvc0_screen *screen)
+{
+ nvc0_fence_emit(screen->fence.current);
+ nvc0_screen_fence_new(screen, &screen->fence.current, FALSE);
+ nvc0_screen_fence_update(screen);
+}