patch-2.4.20 linux-2.4.20/include/asm-mips64/sgi/sgigio.h

• Lines: 70
• Date: Thu Nov 28 15:53:15 2002
• Orig file: linux-2.4.19/include/asm-mips64/sgi/sgigio.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.19/include/asm-mips64/sgi/sgigio.h linux-2.4.20/include/asm-mips64/sgi/sgigio.h
@@ -0,0 +1,69 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * sgigio.h: Definitions for GIO bus found on SGI IP22 (and others by linux
+ *           unsupported) machines.
+ *
+ * Copyright (C) 2002 Ladislav Michl
+ */
+#ifndef _ASM_SGI_SGIGIO_H
+#define _ASM_SGI_SGIGIO_H
+
+/*
+ * There is 10MB of GIO address space for GIO64 slot devices
+ * slot#   slot type address range            size
+ * -----   --------- ----------------------- -----
+ *   0     GFX       0x1f000000 - 0x1f3fffff   4MB
+ *   1     EXP0      0x1f400000 - 0x1f5fffff   2MB
+ *   2     EXP1      0x1f600000 - 0x1f9fffff   4MB
+ *
+ * There are un-slotted devices, HPC, I/O and misc devices, which are grouped
+ * into the HPC address space.
+ *   -     MISC      0x1fb00000 - 0x1fbfffff   1MB
+ *
+ * Following space is reserved and unused
+ *   -     RESERVED  0x18000000 - 0x1effffff 112MB
+ *
+ * The GIO specification tends to use slot numbers while the MC specification
+ * tends to use slot types.
+ *
+ * slot0  - the "graphics" (GFX) slot but there is no requirement that
+ *          a graphics dev may only use this slot
+ * slot1  - this is the "expansion"-slot 0 (EXP0), do not confuse with
+ *          slot 0 (GFX).
+ * slot2  - this is the "expansion"-slot 1 (EXP1), do not confuse with
+ *          slot 1 (EXP0).
+ */
+
+#define GIO_SLOT_GFX	0
+#define GIO_SLOT_GIO1	1
+#define GIO_SLOT_GIO2	2
+#define GIO_NUM_SLOTS	3
+
+#define GIO_ANY_ID	0xff
+
+#define GIO_VALID_ID_ONLY	0x01
+#define GIO_IFACE_64		0x02
+#define GIO_HAS_ROM		0x04
+
+struct gio_dev {
+	unsigned char	device;
+	unsigned char	revision;
+	unsigned short	vendor;
+	unsigned char	flags;
+
+	unsigned char	slot_number;
+	unsigned long	base_addr;
+	unsigned int	map_size;
+
+	char		*name;
+	char		slot_name[5];
+};
+
+extern struct gio_dev* gio_find_device(unsigned char device, const struct gio_dev *from);
+
+extern void sgigio_init(void);
+
+#endif /* _ASM_SGI_SGIGIO_H */