1 files changed, 123 insertions, 0 deletions
diff --git a/linux-core/xgi_fb.c b/linux-core/xgi_fb.c
new file mode 100644
index 00000000..40f39fbc
--- /dev/null
+++ b/linux-core/xgi_fb.c
@@ -0,0 +1,123 @@
+/****************************************************************************
+ * Copyright (C) 2003-2006 by XGI Technology, Taiwan.
+ *
+ * All Rights Reserved.
+ *
+ * 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 on 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * XGI AND/OR ITS SUPPLIERS 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 "xgi_drv.h"
+
+#define XGI_FB_HEAP_START 0x1000000
+
+int xgi_alloc(struct xgi_info * info, struct xgi_mem_alloc * alloc,
+	      struct drm_file * filp)
+{
+	struct drm_memblock_item *block;
+	const char *const mem_name = (alloc->location == XGI_MEMLOC_LOCAL) 
+		? "on-card" : "GART";
+
+
+	if ((alloc->location != XGI_MEMLOC_LOCAL)
+	    && (alloc->location != XGI_MEMLOC_NON_LOCAL)) {
+		DRM_ERROR("Invalid memory pool (0x%08x) specified.\n",
+			  alloc->location);
+		return -EINVAL;
+	}
+
+	if ((alloc->location == XGI_MEMLOC_LOCAL) 
+	    ? !info->fb_heap_initialized : !info->pcie_heap_initialized) {
+		DRM_ERROR("Attempt to allocate from uninitialized memory "
+			  "pool (0x%08x).\n", alloc->location);
+		return -EINVAL;
+	}
+
+	mutex_lock(&info->dev->struct_mutex);
+	block = drm_sman_alloc(&info->sman, alloc->location, alloc->size,
+			       0, (unsigned long) filp);
+	mutex_unlock(&info->dev->struct_mutex);
+
+	if (block == NULL) {
+		alloc->size = 0;
+		DRM_ERROR("%s memory allocation failed\n", mem_name);
+		return -ENOMEM;
+	} else {
+		alloc->offset = (*block->mm->offset)(block->mm,
+						     block->mm_info);
+		alloc->hw_addr = alloc->offset;
+		alloc->index = block->user_hash.key;
+
+		if (alloc->location == XGI_MEMLOC_NON_LOCAL) {
+			alloc->hw_addr += info->pcie.base;
+		}
+
+		DRM_DEBUG("%s memory allocation succeeded: 0x%x\n",
+			  mem_name, alloc->offset);
+	}
+
+	return 0;
+}
+
+
+int xgi_alloc_ioctl(struct drm_device * dev, void * data,
+		    struct drm_file * filp)
+{
+	struct xgi_info *info = dev->dev_private;
+
+	return xgi_alloc(info, (struct xgi_mem_alloc *) data, filp);
+}
+
+
+int xgi_free(struct xgi_info * info, unsigned long index,
+	     struct drm_file * filp)
+{
+	int err;
+
+	mutex_lock(&info->dev->struct_mutex);
+	err = drm_sman_free_key(&info->sman, index);
+	mutex_unlock(&info->dev->struct_mutex);
+
+	return err;
+}
+
+
+int xgi_free_ioctl(struct drm_device * dev, void * data,
+		   struct drm_file * filp)
+{
+	struct xgi_info *info = dev->dev_private;
+
+	return xgi_free(info, *(unsigned long *) data, filp);
+}
+
+
+int xgi_fb_heap_init(struct xgi_info * info)
+{
+	int err;
+	
+	mutex_lock(&info->dev->struct_mutex);
+	err = drm_sman_set_range(&info->sman, XGI_MEMLOC_LOCAL,
+				 XGI_FB_HEAP_START,
+				 info->fb.size - XGI_FB_HEAP_START);
+	mutex_unlock(&info->dev->struct_mutex);
+
+	info->fb_heap_initialized = (err == 0);
+	return err;
+}