patch-2.1.73 linux/drivers/sgi/char/rrm.c

• Lines: 70
• Date: Wed Dec 10 10:31:11 1997
• Orig file: v2.1.72/linux/drivers/sgi/char/rrm.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.72/linux/drivers/sgi/char/rrm.c linux/drivers/sgi/char/rrm.c
@@ -0,0 +1,69 @@
+/*
+ * Linux Rendering Resource Manager 
+ *
+ *          Implements the SGI-compatible rendering resource manager.
+ *          This takes care of implementing the virtualized video hardware
+ *          access required for OpenGL direct rendering.
+ *
+ * Author:  Miguel de Icaza (miguel@nuclecu.unam.mx)
+ *
+ * Fixes:
+ */
+#include <asm/uaccess.h>
+#include <asm/rrm.h>
+
+int
+rrm_open_rn (int rnid, void *arg)
+{
+	return 0;
+}
+
+int
+rrm_close_rn (int rnid, void *arg)
+{
+	return 0;
+}
+
+int
+rrm_bind_proc_to_rn (int rnid, void *arg)
+{
+	return 0;
+}
+
+typedef int (*rrm_function )(void *arg);
+
+struct {
+	int (*r_fn)(int rnid, void *arg);
+	int arg_size;
+} rrm_functions [] = {
+	{ rrm_open_rn,         sizeof (struct RRM_OpenRN) },
+	{ rrm_close_rn,        sizeof (struct RRM_CloseRN) },
+	{ rrm_bind_proc_to_rn, sizeof (struct RRM_BindProcToRN) }
+};
+
+#define RRM_FUNCTIONS (sizeof (rrm_functions)/sizeof (rrm_functions [0]))
+
+/* cmd is a number in the range [0..RRM_CMD_LIMIT-RRM_BASE] */
+int
+rrm_command (unsigned int cmd, void *arg)
+{
+	int i, rnid;
+	
+	if (cmd > RRM_FUNCTIONS){
+		printk ("Called unimplemented rrm ioctl: %d\n", cmd + RRM_BASE);
+		return -EINVAL;
+	}
+	i = verify_area (VERIFY_READ, arg, rrm_functions [cmd].arg_size);
+	if (i) return i;
+
+	__get_user_ret (rnid, (int *) arg, -EFAULT);
+	return (*(rrm_functions [cmd].r_fn))(rnid, arg);
+}
+
+int
+rrm_close (struct inode *inode, struct file *file)
+{
+	/* This routine is invoked when the device is closed */
+	return 0;
+}
+