drm/nvc0: initial vm implementation, use for bar1/bar3 management

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvc0_vram.c b/drivers/gpu/drm/nouveau/nvc0_vram.c
new file mode 100644
index 000000000000..41fcae5ffba4
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvc0_vram.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2010 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
+ */
+
+#include "drmP.h"
+#include "nouveau_drv.h"
+#include "nouveau_mm.h"
+
+bool
+nvc0_vram_flags_valid(struct drm_device *dev, u32 tile_flags)
+{
+	if (likely(!(tile_flags & NOUVEAU_GEM_TILE_LAYOUT_MASK)))
+		return true;
+	return false;
+}
+
+int
+nvc0_vram_new(struct drm_device *dev, u64 size, u32 align, u32 ncmin,
+	      u32 type, struct nouveau_vram **pvram)
+{
+	struct drm_nouveau_private *dev_priv = dev->dev_private;
+	struct ttm_bo_device *bdev = &dev_priv->ttm.bdev;
+	struct ttm_mem_type_manager *man = &bdev->man[TTM_PL_VRAM];
+	struct nouveau_mm *mm = man->priv;
+	struct nouveau_mm_node *r;
+	struct nouveau_vram *vram;
+	int ret;
+
+	size  >>= 12;
+	align >>= 12;
+	ncmin >>= 12;
+
+	vram = kzalloc(sizeof(*vram), GFP_KERNEL);
+	if (!vram)
+		return -ENOMEM;
+
+	INIT_LIST_HEAD(&vram->regions);
+	vram->dev = dev_priv->dev;
+	vram->memtype = type;
+	vram->size = size;
+
+	mutex_lock(&mm->mutex);
+	do {
+		ret = nouveau_mm_get(mm, 1, size, ncmin, align, &r);
+		if (ret) {
+			mutex_unlock(&mm->mutex);
+			nv50_vram_del(dev, &vram);
+			return ret;
+		}
+
+		list_add_tail(&r->rl_entry, &vram->regions);
+		size -= r->length;
+	} while (size);
+	mutex_unlock(&mm->mutex);
+
+	r = list_first_entry(&vram->regions, struct nouveau_mm_node, rl_entry);
+	vram->offset = (u64)r->offset << 12;
+	*pvram = vram;
+	return 0;
+}
+
+int
+nvc0_vram_init(struct drm_device *dev)
+{
+	struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+	dev_priv->vram_size  = nv_rd32(dev, 0x10f20c) << 20;
+	dev_priv->vram_size *= nv_rd32(dev, 0x121c74);
+	dev_priv->vram_rblock_size = 4096;
+	return 0;
+}