-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/genhd.h>
-#include <linux/mutex.h>
-#include <linux/ide.h>
-#include <linux/hdreg.h>
-
-#include "ide-floppy.h"
-
-#define IDEFLOPPY_VERSION "1.00"
-
-/* module parameters */
-static unsigned long debug_mask;
-module_param(debug_mask, ulong, 0644);
-
-static DEFINE_MUTEX(ide_disk_ref_mutex);
-
-static void ide_disk_release(struct kref *);
-
-static struct ide_floppy_obj *ide_disk_get(struct gendisk *disk)
-{
- struct ide_floppy_obj *idkp = NULL;
-
- mutex_lock(&ide_disk_ref_mutex);
- idkp = ide_drv_g(disk, ide_floppy_obj);
- if (idkp) {
- if (ide_device_get(idkp->drive))
- idkp = NULL;
- else
- kref_get(&idkp->kref);
- }
- mutex_unlock(&ide_disk_ref_mutex);
- return idkp;
-}
-
-static void ide_disk_put(struct ide_floppy_obj *idkp)
-{
- ide_drive_t *drive = idkp->drive;
-
- mutex_lock(&ide_disk_ref_mutex);
- kref_put(&idkp->kref, ide_disk_release);
- ide_device_put(drive);
- mutex_unlock(&ide_disk_ref_mutex);
-}
-
-sector_t ide_gd_capacity(ide_drive_t *drive)
-{
- return drive->capacity64;
-}
-
-static int ide_gd_probe(ide_drive_t *);
-
-static void ide_gd_remove(ide_drive_t *drive)
-{
- struct ide_floppy_obj *idkp = drive->driver_data;
- struct gendisk *g = idkp->disk;
-
- ide_proc_unregister_driver(drive, idkp->driver);
-
- del_gendisk(g);
-
- ide_disk_put(idkp);
-}
-
-static void ide_disk_release(struct kref *kref)
-{
- struct ide_floppy_obj *idkp = to_ide_drv(kref, ide_floppy_obj);
- ide_drive_t *drive = idkp->drive;
- struct gendisk *g = idkp->disk;
-
- drive->driver_data = NULL;
- g->private_data = NULL;
- put_disk(g);
- kfree(idkp);
-}
-
-#ifdef CONFIG_IDE_PROC_FS
-static ide_proc_entry_t *ide_floppy_proc_entries(ide_drive_t *drive)
-{
- return ide_floppy_proc;
-}
-
-static const struct ide_proc_devset *ide_floppy_proc_devsets(ide_drive_t *drive)
-{
- return ide_floppy_settings;
-}
-#endif
-
-static ide_driver_t ide_gd_driver = {
- .gen_driver = {
- .owner = THIS_MODULE,
- .name = "ide-floppy",
- .bus = &ide_bus_type,
- },
- .probe = ide_gd_probe,
- .remove = ide_gd_remove,
- .version = IDEFLOPPY_VERSION,
- .do_request = ide_floppy_do_request,
- .end_request = ide_floppy_end_request,
- .error = __ide_error,
-#ifdef CONFIG_IDE_PROC_FS
- .proc_entries = ide_floppy_proc_entries,
- .proc_devsets = ide_floppy_proc_devsets,
-#endif
-};
-
-static int ide_gd_open(struct inode *inode, struct file *filp)
-{
- struct gendisk *disk = inode->i_bdev->bd_disk;
- struct ide_floppy_obj *idkp;
- ide_drive_t *drive;
- int ret = 0;
-
- idkp = ide_disk_get(disk);
- if (idkp == NULL)
- return -ENXIO;
-
- drive = idkp->drive;
-
- ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
-
- idkp->openers++;
-
- if (idkp->openers == 1) {
- drive->dev_flags &= ~IDE_DFLAG_FORMAT_IN_PROGRESS;
- /* Just in case */
-
- if (ide_do_test_unit_ready(drive, disk))
- ide_do_start_stop(drive, disk, 1);
-
- ret = ide_floppy_get_capacity(drive);
-
- set_capacity(disk, ide_gd_capacity(drive));
-
- if (ret && (filp->f_flags & O_NDELAY) == 0) {
- /*
- * Allow O_NDELAY to open a drive without a disk, or with an
- * unreadable disk, so that we can get the format capacity
- * of the drive or begin the format - Sam
- */
- ret = -EIO;
- goto out_put_idkp;
- }
-
- if ((drive->dev_flags & IDE_DFLAG_WP) && (filp->f_mode & 2)) {
- ret = -EROFS;
- goto out_put_idkp;
- }
-
- ide_set_media_lock(drive, disk, 1);
- drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
- check_disk_change(inode->i_bdev);
- } else if (drive->dev_flags & IDE_DFLAG_FORMAT_IN_PROGRESS) {
- ret = -EBUSY;
- goto out_put_idkp;
- }
- return 0;
-
-out_put_idkp:
- idkp->openers--;
- ide_disk_put(idkp);
- return ret;
-}
-
-static int ide_gd_release(struct inode *inode, struct file *filp)
-{
- struct gendisk *disk = inode->i_bdev->bd_disk;
- struct ide_floppy_obj *idkp = ide_drv_g(disk, ide_floppy_obj);
- ide_drive_t *drive = idkp->drive;
-
- ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
-
- if (idkp->openers == 1) {
- ide_set_media_lock(drive, disk, 0);
- drive->dev_flags &= ~IDE_DFLAG_FORMAT_IN_PROGRESS;
- }
-
- idkp->openers--;
-
- ide_disk_put(idkp);
-
- return 0;
-}
-
-static int ide_gd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
-{
- struct ide_floppy_obj *idkp = ide_drv_g(bdev->bd_disk, ide_floppy_obj);
- ide_drive_t *drive = idkp->drive;
-
- geo->heads = drive->bios_head;
- geo->sectors = drive->bios_sect;
- geo->cylinders = (u16)drive->bios_cyl; /* truncate */
- return 0;
-}
-
-static int ide_gd_media_changed(struct gendisk *disk)
-{
- struct ide_floppy_obj *idkp = ide_drv_g(disk, ide_floppy_obj);
- ide_drive_t *drive = idkp->drive;
- int ret;
-
- /* do not scan partitions twice if this is a removable device */
- if (drive->dev_flags & IDE_DFLAG_ATTACH) {
- drive->dev_flags &= ~IDE_DFLAG_ATTACH;
- return 0;
- }
-
- ret = !!(drive->dev_flags & IDE_DFLAG_MEDIA_CHANGED);
- drive->dev_flags &= ~IDE_DFLAG_MEDIA_CHANGED;
-
- return ret;
-}
-
-static int ide_gd_revalidate_disk(struct gendisk *disk)
-{
- struct ide_floppy_obj *idkp = ide_drv_g(disk, ide_floppy_obj);
- set_capacity(disk, ide_gd_capacity(idkp->drive));
- return 0;
-}
-
-static struct block_device_operations ide_gd_ops = {
- .owner = THIS_MODULE,
- .open = ide_gd_open,
- .release = ide_gd_release,
- .ioctl = ide_floppy_ioctl,
- .getgeo = ide_gd_getgeo,
- .media_changed = ide_gd_media_changed,
- .revalidate_disk = ide_gd_revalidate_disk
-};
-
-static int ide_gd_probe(ide_drive_t *drive)
-{
- struct ide_floppy_obj *idkp;
- struct gendisk *g;
-
- if (!strstr("ide-floppy", drive->driver_req))
- goto failed;
-
- if (drive->media != ide_floppy)
- goto failed;
-
- if (!ide_check_atapi_device(drive, DRV_NAME)) {
- printk(KERN_ERR PFX "%s: not supported by this version of "
- DRV_NAME "\n", drive->name);
- goto failed;
- }
- idkp = kzalloc(sizeof(*idkp), GFP_KERNEL);
- if (!idkp) {
- printk(KERN_ERR PFX "%s: Can't allocate a floppy structure\n",
- drive->name);
- goto failed;
- }
-
- g = alloc_disk_node(1 << PARTN_BITS, hwif_to_node(drive->hwif));
- if (!g)
- goto out_free_idkp;
-
- ide_init_disk(g, drive);
-
- kref_init(&idkp->kref);
-
- idkp->drive = drive;
- idkp->driver = &ide_gd_driver;
- idkp->disk = g;
-
- g->private_data = &idkp->driver;
-
- drive->driver_data = idkp;
-
- drive->debug_mask = debug_mask;
-
- ide_floppy_setup(drive);
-
- set_capacity(g, ide_gd_capacity(drive));
-
- g->minors = 1 << PARTN_BITS;
- g->driverfs_dev = &drive->gendev;
- if (drive->dev_flags & IDE_DFLAG_REMOVABLE)
- g->flags = GENHD_FL_REMOVABLE;
- g->fops = &ide_gd_ops;
- add_disk(g);
- return 0;
-
-out_free_idkp:
- kfree(idkp);
-failed:
- return -ENODEV;
-}
-
-static int __init ide_gd_init(void)
-{
- printk(KERN_INFO DRV_NAME " driver " IDEFLOPPY_VERSION "\n");
- return driver_register(&ide_gd_driver.gen_driver);
-}
-
-static void __exit ide_gd_exit(void)
-{
- driver_unregister(&ide_gd_driver.gen_driver);
-}
-
-MODULE_ALIAS("ide:*m-floppy*");
-MODULE_ALIAS("ide-floppy");
-module_init(ide_gd_init);
-module_exit(ide_gd_exit);
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("ATAPI FLOPPY Driver");
projects / linux-2.6-omap-h63xx.git / commitdiff