patch-2.4.23 linux-2.4.23/drivers/char/drm/via_map.c

• Lines: 119
• Date: 2003-11-28 10:26:20.000000000 -0800
• Orig file: linux-2.4.22/drivers/char/drm/via_map.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.22/drivers/char/drm/via_map.c linux-2.4.23/drivers/char/drm/via_map.c
@@ -0,0 +1,118 @@
+/*
+ * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2003 S3 Graphics, Inc. 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
+ * the rights to use, copy, modify, merge, publish, distribute, sub license,
+ * 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
+ * VIA, S3 GRAPHICS, 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.
+ */
+#define __NO_VERSION__
+#include "via.h"
+#include "drmP.h"
+#include "via_drv.h"
+
+int via_do_init_map(drm_device_t *dev, drm_via_init_t *init)
+{
+	drm_via_private_t *dev_priv;
+	struct list_head *list;
+
+	DRM_DEBUG("%s\n", __FUNCTION__);
+
+	dev_priv = DRM(alloc)(sizeof(drm_via_private_t), DRM_MEM_DRIVER);
+	if (dev_priv == NULL)
+		return -ENOMEM;
+
+	memset(dev_priv, 0, sizeof(drm_via_private_t));
+	
+	list_for_each(list, &dev->maplist->head) {
+		drm_map_list_t *r_list = (drm_map_list_t *)list;
+		if ( r_list->map &&
+		    r_list->map->type == _DRM_SHM &&
+		    r_list->map->flags & _DRM_CONTAINS_LOCK) {
+			dev_priv->sarea = r_list->map;
+ 			break;
+ 		}
+ 	}
+	if (!dev_priv->sarea) {
+		DRM_ERROR("could not find sarea!\n");
+		dev->dev_private = (void *)dev_priv;
+		via_do_cleanup_map(dev);
+		return -EINVAL;
+	}
+
+	DRM_FIND_MAP(dev_priv->fb, init->fb_offset);
+	if (!dev_priv->fb) {
+		DRM_ERROR("could not find framebuffer!\n");
+		dev->dev_private = (void *)dev_priv;
+		via_do_cleanup_map(dev);
+		return -EINVAL;
+	}
+	DRM_FIND_MAP(dev_priv->mmio, init->mmio_offset);
+	if (!dev_priv->mmio) {
+		DRM_ERROR("could not find mmio region!\n");
+		dev->dev_private = (void *)dev_priv;
+		via_do_cleanup_map(dev);
+		return -EINVAL;
+	}
+	
+	dev_priv->sarea_priv = 	(drm_via_sarea_t *)((u8 *)dev_priv->sarea->handle +
+				     init->sarea_priv_offset);
+
+	dev_priv->agpAddr = init->agpAddr;
+
+	dev->dev_private = (void *)dev_priv;
+
+	return 0;
+}
+
+int via_do_cleanup_map(drm_device_t *dev)
+{
+	if (dev->dev_private) {
+
+		drm_via_private_t *dev_priv = dev->dev_private;
+
+		DRM(free)(dev_priv, sizeof(drm_via_private_t),
+			   DRM_MEM_DRIVER);
+		dev->dev_private = NULL;
+	}
+
+	return 0;
+}
+
+int via_map_init(struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg)
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_via_init_t init;
+
+	DRM_DEBUG("%s\n", __FUNCTION__);
+
+	if (copy_from_user(&init, (drm_via_init_t *)arg, sizeof(init)))
+		return -EFAULT;
+
+	switch (init.func) {
+	    case VIA_INIT_MAP:
+		return via_do_init_map(dev, &init);
+	    case VIA_CLEANUP_MAP:
+		return via_do_cleanup_map(dev);
+	}
+
+	return -EINVAL;
+}
+