diff options
Diffstat (limited to 'drivers/ide/ide-floppy.c')
-rw-r--r-- | drivers/ide/ide-floppy.c | 319 |
1 files changed, 10 insertions, 309 deletions
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index 791a9d6..802e096 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -15,12 +15,6 @@ * Documentation/ide/ChangeLog.ide-floppy.1996-2002 */ -#define DRV_NAME "ide-floppy" -#define PFX DRV_NAME ": " - -#define IDEFLOPPY_VERSION "1.00" - -#include <linux/module.h> #include <linux/types.h> #include <linux/string.h> #include <linux/kernel.h> @@ -49,19 +43,6 @@ #include "ide-floppy.h" -/* module parameters */ -static unsigned long debug_mask; -module_param(debug_mask, ulong, 0644); - -/* define to see debug info */ -#define IDEFLOPPY_DEBUG_LOG 0 - -#if IDEFLOPPY_DEBUG_LOG -#define ide_debug_log(lvl, fmt, args...) __ide_debug_log(lvl, fmt, args) -#else -#define ide_debug_log(lvl, fmt, args...) do {} while (0) -#endif - /* * After each failed packet command we issue a request sense command and retry * the packet command IDEFLOPPY_MAX_PC_RETRIES times. @@ -83,41 +64,11 @@ module_param(debug_mask, ulong, 0644); /* Error code returned in rq->errors to the higher part of the driver. */ #define IDEFLOPPY_ERROR_GENERAL 101 -static DEFINE_MUTEX(idefloppy_ref_mutex); - -static void idefloppy_cleanup_obj(struct kref *); - -static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) -{ - struct ide_floppy_obj *floppy = NULL; - - mutex_lock(&idefloppy_ref_mutex); - floppy = ide_drv_g(disk, ide_floppy_obj); - if (floppy) { - if (ide_device_get(floppy->drive)) - floppy = NULL; - else - kref_get(&floppy->kref); - } - mutex_unlock(&idefloppy_ref_mutex); - return floppy; -} - -static void ide_floppy_put(struct ide_floppy_obj *floppy) -{ - ide_drive_t *drive = floppy->drive; - - mutex_lock(&idefloppy_ref_mutex); - kref_put(&floppy->kref, idefloppy_cleanup_obj); - ide_device_put(drive); - mutex_unlock(&idefloppy_ref_mutex); -} - /* * Used to finish servicing a request. For read/write requests, we will call * ide_end_request to pass to the next buffer. */ -static int idefloppy_end_request(ide_drive_t *drive, int uptodate, int nsecs) +int ide_floppy_end_request(ide_drive_t *drive, int uptodate, int nsecs) { idefloppy_floppy_t *floppy = drive->driver_data; struct request *rq = HWGROUP(drive)->rq; @@ -161,7 +112,7 @@ static void idefloppy_update_buffers(ide_drive_t *drive, struct bio *bio = rq->bio; while ((bio = rq->bio) != NULL) - idefloppy_end_request(drive, 1, 0); + ide_floppy_end_request(drive, 1, 0); } static void ide_floppy_callback(ide_drive_t *drive, int dsc) @@ -200,7 +151,7 @@ static void ide_floppy_callback(ide_drive_t *drive, int dsc) "Aborting request!\n"); } - idefloppy_end_request(drive, uptodate, 0); + ide_floppy_end_request(drive, uptodate, 0); } static void ide_floppy_report_error(idefloppy_floppy_t *floppy, @@ -329,8 +280,8 @@ static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, pc->req_xfer = pc->buf_size = rq->data_len; } -static ide_startstop_t idefloppy_do_request(ide_drive_t *drive, - struct request *rq, sector_t block_s) +ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, struct request *rq, + sector_t block_s) { idefloppy_floppy_t *floppy = drive->driver_data; ide_hwif_t *hwif = drive->hwif; @@ -353,7 +304,7 @@ static ide_startstop_t idefloppy_do_request(ide_drive_t *drive, else printk(KERN_ERR PFX "%s: I/O error\n", drive->name); - idefloppy_end_request(drive, 0, 0); + ide_floppy_end_request(drive, 0, 0); return ide_stopped; } if (blk_fs_request(rq)) { @@ -361,7 +312,7 @@ static ide_startstop_t idefloppy_do_request(ide_drive_t *drive, (rq->nr_sectors % floppy->bs_factor)) { printk(KERN_ERR PFX "%s: unsupported r/w rq size\n", drive->name); - idefloppy_end_request(drive, 0, 0); + ide_floppy_end_request(drive, 0, 0); return ide_stopped; } pc = &floppy->queued_pc; @@ -373,7 +324,7 @@ static ide_startstop_t idefloppy_do_request(ide_drive_t *drive, idefloppy_blockpc_cmd(floppy, pc, rq); } else { blk_dump_rq_flags(rq, PFX "unsupported command in queue"); - idefloppy_end_request(drive, 0, 0); + ide_floppy_end_request(drive, 0, 0); return ide_stopped; } @@ -455,7 +406,7 @@ static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive) * Determine if a media is present in the floppy drive, and if so, its LBA * capacity. */ -static int ide_floppy_get_capacity(ide_drive_t *drive) +int ide_floppy_get_capacity(ide_drive_t *drive) { idefloppy_floppy_t *floppy = drive->driver_data; struct gendisk *disk = floppy->disk; @@ -554,12 +505,7 @@ static int ide_floppy_get_capacity(ide_drive_t *drive) return rc; } -sector_t ide_floppy_capacity(ide_drive_t *drive) -{ - return drive->capacity64; -} - -static void idefloppy_setup(ide_drive_t *drive) +void ide_floppy_setup(ide_drive_t *drive) { struct ide_floppy_obj *floppy = drive->driver_data; u16 *id = drive->id; @@ -601,248 +547,3 @@ static void idefloppy_setup(ide_drive_t *drive) drive->dev_flags |= IDE_DFLAG_ATTACH; } - -static void ide_floppy_remove(ide_drive_t *drive) -{ - idefloppy_floppy_t *floppy = drive->driver_data; - struct gendisk *g = floppy->disk; - - ide_proc_unregister_driver(drive, floppy->driver); - - del_gendisk(g); - - ide_floppy_put(floppy); -} - -static void idefloppy_cleanup_obj(struct kref *kref) -{ - struct ide_floppy_obj *floppy = to_ide_drv(kref, ide_floppy_obj); - ide_drive_t *drive = floppy->drive; - struct gendisk *g = floppy->disk; - - drive->driver_data = NULL; - g->private_data = NULL; - put_disk(g); - kfree(floppy); -} - -static int ide_floppy_probe(ide_drive_t *); - -static ide_driver_t idefloppy_driver = { - .gen_driver = { - .owner = THIS_MODULE, - .name = "ide-floppy", - .bus = &ide_bus_type, - }, - .probe = ide_floppy_probe, - .remove = ide_floppy_remove, - .version = IDEFLOPPY_VERSION, - .do_request = idefloppy_do_request, - .end_request = idefloppy_end_request, - .error = __ide_error, -#ifdef CONFIG_IDE_PROC_FS - .proc = ide_floppy_proc, - .settings = ide_floppy_settings, -#endif -}; - -static int idefloppy_open(struct inode *inode, struct file *filp) -{ - struct gendisk *disk = inode->i_bdev->bd_disk; - struct ide_floppy_obj *floppy; - ide_drive_t *drive; - int ret = 0; - - floppy = ide_floppy_get(disk); - if (!floppy) - return -ENXIO; - - drive = floppy->drive; - - ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); - - floppy->openers++; - - if (floppy->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_floppy_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_floppy; - } - - if ((drive->dev_flags & IDE_DFLAG_WP) && (filp->f_mode & 2)) { - ret = -EROFS; - goto out_put_floppy; - } - - 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_floppy; - } - return 0; - -out_put_floppy: - floppy->openers--; - ide_floppy_put(floppy); - return ret; -} - -static int idefloppy_release(struct inode *inode, struct file *filp) -{ - struct gendisk *disk = inode->i_bdev->bd_disk; - struct ide_floppy_obj *floppy = ide_drv_g(disk, ide_floppy_obj); - ide_drive_t *drive = floppy->drive; - - ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); - - if (floppy->openers == 1) { - ide_set_media_lock(drive, disk, 0); - drive->dev_flags &= ~IDE_DFLAG_FORMAT_IN_PROGRESS; - } - - floppy->openers--; - - ide_floppy_put(floppy); - - return 0; -} - -static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) -{ - struct ide_floppy_obj *floppy = ide_drv_g(bdev->bd_disk, - ide_floppy_obj); - ide_drive_t *drive = floppy->drive; - - geo->heads = drive->bios_head; - geo->sectors = drive->bios_sect; - geo->cylinders = (u16)drive->bios_cyl; /* truncate */ - return 0; -} - -static int idefloppy_media_changed(struct gendisk *disk) -{ - struct ide_floppy_obj *floppy = ide_drv_g(disk, ide_floppy_obj); - ide_drive_t *drive = floppy->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 idefloppy_revalidate_disk(struct gendisk *disk) -{ - struct ide_floppy_obj *floppy = ide_drv_g(disk, ide_floppy_obj); - set_capacity(disk, ide_floppy_capacity(floppy->drive)); - return 0; -} - -static struct block_device_operations idefloppy_ops = { - .owner = THIS_MODULE, - .open = idefloppy_open, - .release = idefloppy_release, - .ioctl = ide_floppy_ioctl, - .getgeo = idefloppy_getgeo, - .media_changed = idefloppy_media_changed, - .revalidate_disk = idefloppy_revalidate_disk -}; - -static int ide_floppy_probe(ide_drive_t *drive) -{ - idefloppy_floppy_t *floppy; - 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; - } - floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL); - if (!floppy) { - 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_floppy; - - ide_init_disk(g, drive); - - kref_init(&floppy->kref); - - floppy->drive = drive; - floppy->driver = &idefloppy_driver; - floppy->disk = g; - - g->private_data = &floppy->driver; - - drive->driver_data = floppy; - - drive->debug_mask = debug_mask; - - idefloppy_setup(drive); - - set_capacity(g, ide_floppy_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 = &idefloppy_ops; - add_disk(g); - return 0; - -out_free_floppy: - kfree(floppy); -failed: - return -ENODEV; -} - -static void __exit idefloppy_exit(void) -{ - driver_unregister(&idefloppy_driver.gen_driver); -} - -static int __init idefloppy_init(void) -{ - printk(KERN_INFO DRV_NAME " driver " IDEFLOPPY_VERSION "\n"); - return driver_register(&idefloppy_driver.gen_driver); -} - -MODULE_ALIAS("ide:*m-floppy*"); -MODULE_ALIAS("ide-floppy"); -module_init(idefloppy_init); -module_exit(idefloppy_exit); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); - |