1 files changed, 127 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_fence.c b/drivers/gpu/drm/nouveau/nv50_fence.c
new file mode 100644
index 00000000000..e0763ea88ee
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nv50_fence.c
@@ -0,0 +1,127 @@
+/*
+ * 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 <core/object.h>
+#include <core/class.h>
+
+#include "nouveau_drm.h"
+#include "nouveau_dma.h"
+#include "nouveau_fence.h"
+
+#include "nv50_display.h"
+
+struct nv50_fence_chan {
+	struct nouveau_fence_chan base;
+};
+
+struct nv50_fence_priv {
+	struct nouveau_fence_priv base;
+	struct nouveau_bo *bo;
+	spinlock_t lock;
+	u32 sequence;
+};
+
+static int
+nv50_fence_context_new(struct nouveau_channel *chan)
+{
+	struct drm_device *dev = chan->drm->dev;
+	struct nv50_fence_priv *priv = chan->drm->fence;
+	struct nv50_fence_chan *fctx;
+	struct ttm_mem_reg *mem = &priv->bo->bo.mem;
+	struct nouveau_object *object;
+	int ret, i;
+
+	fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL);
+	if (!fctx)
+		return -ENOMEM;
+
+	nouveau_fence_context_new(&fctx->base);
+
+	ret = nouveau_object_new(nv_object(chan->cli), chan->handle,
+				 NvSema, 0x0002,
+				 &(struct nv_dma_class) {
+					.flags = NV_DMA_TARGET_VRAM |
+						 NV_DMA_ACCESS_RDWR,
+					.start = mem->start * PAGE_SIZE,
+					.limit = mem->size - 1,
+				 }, sizeof(struct nv_dma_class),
+				 &object);
+
+	/* dma objects for display sync channel semaphore blocks */
+	for (i = 0; !ret && i < dev->mode_config.num_crtc; i++) {
+		struct nouveau_bo *bo = nv50_display_crtc_sema(dev, i);
+
+		ret = nouveau_object_new(nv_object(chan->cli), chan->handle,
+					 NvEvoSema0 + i, 0x003d,
+					 &(struct nv_dma_class) {
+						.flags = NV_DMA_TARGET_VRAM |
+							 NV_DMA_ACCESS_RDWR,
+						.start = bo->bo.offset,
+						.limit = bo->bo.offset + 0xfff,
+					 }, sizeof(struct nv_dma_class),
+					 &object);
+	}
+
+	if (ret)
+		nv10_fence_context_del(chan);
+	return ret;
+}
+
+int
+nv50_fence_create(struct nouveau_drm *drm)
+{
+	struct nv50_fence_priv *priv;
+	int ret = 0;
+
+	priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->base.dtor = nv10_fence_destroy;
+	priv->base.context_new = nv50_fence_context_new;
+	priv->base.context_del = nv10_fence_context_del;
+	priv->base.emit = nv10_fence_emit;
+	priv->base.read = nv10_fence_read;
+	priv->base.sync = nv17_fence_sync;
+	spin_lock_init(&priv->lock);
+
+	ret = nouveau_bo_new(drm->dev, 4096, 0x1000, TTM_PL_FLAG_VRAM,
+			     0, 0x0000, NULL, &priv->bo);
+	if (!ret) {
+		ret = nouveau_bo_pin(priv->bo, TTM_PL_FLAG_VRAM);
+		if (!ret)
+			ret = nouveau_bo_map(priv->bo);
+		if (ret)
+			nouveau_bo_ref(NULL, &priv->bo);
+	}
+
+	if (ret == 0) {
+		nouveau_bo_wr32(priv->bo, 0x000, 0x00000000);
+		priv->base.sync = nv17_fence_sync;
+	}
+
+	if (ret)
+		nv10_fence_destroy(drm);
+	return ret;
+}