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Diffstat (limited to 'drivers/gpu/drm/nouveau/nv10_fence.c')
-rw-r--r--drivers/gpu/drm/nouveau/nv10_fence.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv10_fence.c b/drivers/gpu/drm/nouveau/nv10_fence.c
new file mode 100644
index 000000000..c6a0db5b9
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nv10_fence.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2012 Red Hat 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.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include "nouveau_drv.h"
+#include "nouveau_dma.h"
+#include "nv10_fence.h"
+
+#include <nvif/push006c.h>
+
+#include <nvhw/class/cl006e.h>
+
+int
+nv10_fence_emit(struct nouveau_fence *fence)
+{
+ struct nvif_push *push = fence->channel->chan.push;
+ int ret = PUSH_WAIT(push, 2);
+ if (ret == 0) {
+ PUSH_MTHD(push, NV06E, SET_REFERENCE, fence->base.seqno);
+ PUSH_KICK(push);
+ }
+ return ret;
+}
+
+
+static int
+nv10_fence_sync(struct nouveau_fence *fence,
+ struct nouveau_channel *prev, struct nouveau_channel *chan)
+{
+ return -ENODEV;
+}
+
+u32
+nv10_fence_read(struct nouveau_channel *chan)
+{
+ return NVIF_RD32(&chan->user, NV06E, REFERENCE);
+}
+
+void
+nv10_fence_context_del(struct nouveau_channel *chan)
+{
+ struct nv10_fence_chan *fctx = chan->fence;
+ nouveau_fence_context_del(&fctx->base);
+ nvif_object_dtor(&fctx->sema);
+ chan->fence = NULL;
+ nouveau_fence_context_free(&fctx->base);
+}
+
+static int
+nv10_fence_context_new(struct nouveau_channel *chan)
+{
+ struct nv10_fence_chan *fctx;
+
+ fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL);
+ if (!fctx)
+ return -ENOMEM;
+
+ nouveau_fence_context_new(chan, &fctx->base);
+ fctx->base.emit = nv10_fence_emit;
+ fctx->base.read = nv10_fence_read;
+ fctx->base.sync = nv10_fence_sync;
+ return 0;
+}
+
+void
+nv10_fence_destroy(struct nouveau_drm *drm)
+{
+ struct nv10_fence_priv *priv = drm->fence;
+ nouveau_bo_unmap(priv->bo);
+ if (priv->bo)
+ nouveau_bo_unpin(priv->bo);
+ nouveau_bo_ref(NULL, &priv->bo);
+ drm->fence = NULL;
+ kfree(priv);
+}
+
+int
+nv10_fence_create(struct nouveau_drm *drm)
+{
+ struct nv10_fence_priv *priv;
+
+ priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->base.dtor = nv10_fence_destroy;
+ priv->base.context_new = nv10_fence_context_new;
+ priv->base.context_del = nv10_fence_context_del;
+ spin_lock_init(&priv->lock);
+ return 0;
+}