1 /*
2 * ide-default - Driver for unbound ide devices
3 *
4 * This provides a clean way to bind a device to default operations
5 * by having an actual driver class that rather than special casing
6 * "no driver" all over the IDE code
7 *
8 * Copyright (C) 2003, Red Hat <alan@redhat.com>
9 */
10
11 #include <linux/config.h>
12 #include <linux/module.h>
13 #include <linux/types.h>
14 #include <linux/string.h>
15 #include <linux/kernel.h>
16 #include <linux/delay.h>
17 #include <linux/timer.h>
18 #include <linux/mm.h>
19 #include <linux/interrupt.h>
20 #include <linux/major.h>
21 #include <linux/errno.h>
22 #include <linux/genhd.h>
23 #include <linux/slab.h>
24 #include <linux/cdrom.h>
25 #include <linux/ide.h>
26
27 #include <asm/byteorder.h>
28 #include <asm/irq.h>
29 #include <asm/uaccess.h>
30 #include <asm/io.h>
31 #include <asm/unaligned.h>
32 #include <asm/bitops.h>
33
34 #define IDEDEFAULT_VERSION "0.9.newide"
35 /*
36 * Driver initialization.
37 */
38
idedefault_setup(ide_drive_t * drive)39 static void idedefault_setup (ide_drive_t *drive)
40 {
41 }
42
idedefault_open(struct inode * inode,struct file * filp,ide_drive_t * drive)43 static int idedefault_open(struct inode *inode, struct file *filp, ide_drive_t *drive)
44 {
45 MOD_INC_USE_COUNT;
46 if(filp->f_flags & O_NDELAY)
47 return 0;
48 MOD_DEC_USE_COUNT;
49 drive->usage--;
50 return -ENXIO;
51 }
52
idedefault_release(struct inode * inode,struct file * filp,ide_drive_t * drive)53 static void idedefault_release(struct inode *inode, struct file *filp, ide_drive_t *drive)
54 {
55 MOD_DEC_USE_COUNT;
56 }
57
58 int idedefault_init (void);
59 int idedefault_attach(ide_drive_t *drive);
60
61 /*
62 * IDE subdriver functions, registered with ide.c
63 */
64
65 ide_driver_t idedefault_driver = {
66 name: "ide-default",
67 version: IDEDEFAULT_VERSION,
68 media: 0,
69 busy: 0,
70 supports_dma: 1,
71 supports_dsc_overlap: 0,
72 init: idedefault_init,
73 attach: idedefault_attach,
74 open: idedefault_open,
75 release: idedefault_release
76 };
77
78 static ide_module_t idedefault_module = {
79 IDE_DRIVER_MODULE,
80 idedefault_init,
81 &idedefault_driver,
82 NULL
83 };
84
idedefault_attach(ide_drive_t * drive)85 int idedefault_attach (ide_drive_t *drive)
86 {
87 int ret = 0;
88 MOD_INC_USE_COUNT;
89 if (ide_register_subdriver(drive,
90 &idedefault_driver, IDE_SUBDRIVER_VERSION)) {
91 printk(KERN_ERR "ide-default: %s: Failed to register the "
92 "driver with ide.c\n", drive->name);
93 ret = 1;
94 goto bye_game_over;
95 }
96 DRIVER(drive)->busy++;
97 idedefault_setup(drive);
98 DRIVER(drive)->busy--;
99
100 bye_game_over:
101 MOD_DEC_USE_COUNT;
102 return ret;
103 }
104
idedefault_init(void)105 int idedefault_init (void)
106 {
107 ide_register_module(&idedefault_module);
108 return 0;
109 }
110
111 MODULE_LICENSE("GPL");
112