Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / gpu / drm / nouveau / nv10_fence.c

diff --git a/kernel/drivers/gpu/drm/nouveau/nv10_fence.c b/kernel/drivers/gpu/drm/nouveau/nv10_fence.c
new file mode 100644 (file)
index 0000000..5e1ea1c
--- /dev/null
+++ b/kernel/drivers/gpu/drm/nouveau/nv10_fence.c
@@ -0,0 +1,113 @@
+/*
+ * 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_drm.h"
+#include "nouveau_dma.h"
+#include "nv10_fence.h"
+
+int
+nv10_fence_emit(struct nouveau_fence *fence)
+{
+       struct nouveau_channel *chan = fence->channel;
+       int ret = RING_SPACE(chan, 2);
+       if (ret == 0) {
+               BEGIN_NV04(chan, 0, NV10_SUBCHAN_REF_CNT, 1);
+               OUT_RING  (chan, fence->base.seqno);
+               FIRE_RING (chan);
+       }
+       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, 0x0048);
+}
+
+void
+nv10_fence_context_del(struct nouveau_channel *chan)
+{
+       struct nv10_fence_chan *fctx = chan->fence;
+       int i;
+       nouveau_fence_context_del(&fctx->base);
+       for (i = 0; i < ARRAY_SIZE(fctx->head); i++)
+               nvif_object_fini(&fctx->head[i]);
+       nvif_object_fini(&fctx->sema);
+       chan->fence = NULL;
+       nouveau_fence_context_free(&fctx->base);
+}
+
+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;
+       priv->base.contexts = 31;
+       priv->base.context_base = fence_context_alloc(priv->base.contexts);
+       spin_lock_init(&priv->lock);
+       return 0;
+}