ia64/linux-2.6.18-xen.hg

view drivers/mtd/maps/pnc2000.c @ 0:831230e53067

Import 2.6.18 from kernel.org tarball.
author Ian Campbell <ian.campbell@xensource.com>
date Wed Apr 11 14:15:44 2007 +0100 (2007-04-11)
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1 /*
2 * pnc2000.c - mapper for Photron PNC-2000 board.
3 *
4 * Copyright (C) 2000 Crossnet Co. <info@crossnet.co.jp>
5 *
6 * This code is GPL
7 *
8 * $Id: pnc2000.c,v 1.18 2005/11/07 11:14:28 gleixner Exp $
9 */
11 #include <linux/module.h>
12 #include <linux/types.h>
13 #include <linux/kernel.h>
14 #include <linux/init.h>
16 #include <linux/mtd/mtd.h>
17 #include <linux/mtd/map.h>
18 #include <linux/mtd/partitions.h>
21 #define WINDOW_ADDR 0xbf000000
22 #define WINDOW_SIZE 0x00400000
24 /*
25 * MAP DRIVER STUFF
26 */
29 static struct map_info pnc_map = {
30 .name = "PNC-2000",
31 .size = WINDOW_SIZE,
32 .bankwidth = 4,
33 .phys = 0xFFFFFFFF,
34 .virt = (void __iomem *)WINDOW_ADDR,
35 };
38 /*
39 * MTD 'PARTITIONING' STUFF
40 */
41 static struct mtd_partition pnc_partitions[3] = {
42 {
43 .name = "PNC-2000 boot firmware",
44 .size = 0x20000,
45 .offset = 0
46 },
47 {
48 .name = "PNC-2000 kernel",
49 .size = 0x1a0000,
50 .offset = 0x20000
51 },
52 {
53 .name = "PNC-2000 filesystem",
54 .size = 0x240000,
55 .offset = 0x1c0000
56 }
57 };
59 /*
60 * This is the master MTD device for which all the others are just
61 * auto-relocating aliases.
62 */
63 static struct mtd_info *mymtd;
65 static int __init init_pnc2000(void)
66 {
67 printk(KERN_NOTICE "Photron PNC-2000 flash mapping: %x at %x\n", WINDOW_SIZE, WINDOW_ADDR);
69 simple_map_init(&pnc_map);
71 mymtd = do_map_probe("cfi_probe", &pnc_map);
72 if (mymtd) {
73 mymtd->owner = THIS_MODULE;
74 return add_mtd_partitions(mymtd, pnc_partitions, 3);
75 }
77 return -ENXIO;
78 }
80 static void __exit cleanup_pnc2000(void)
81 {
82 if (mymtd) {
83 del_mtd_partitions(mymtd);
84 map_destroy(mymtd);
85 }
86 }
88 module_init(init_pnc2000);
89 module_exit(cleanup_pnc2000);
91 MODULE_LICENSE("GPL");
92 MODULE_AUTHOR("Crossnet Co. <info@crossnet.co.jp>");
93 MODULE_DESCRIPTION("MTD map driver for Photron PNC-2000 board");