ide: add generic ATA/ATAPI disk driver
* Add struct ide_disk_ops containing protocol specific methods.
* Add 'struct ide_disk_ops *' to ide_drive_t.
* Convert ide-{disk,floppy} drivers to use struct ide_disk_ops.
* Merge ide-{disk,floppy} drivers into generic ide-gd driver.
While at it:
- ide_disk_init_capacity() -> ide_disk_get_capacity()
Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz
parent
79cb380397
commit
806f80a6fc
13 changed files with 304 additions and 456 deletions
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@ -84,21 +84,40 @@ config BLK_DEV_IDE_SATA
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If unsure, say N.
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config BLK_DEV_IDEDISK
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tristate "Include IDE/ATA-2 DISK support"
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---help---
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This will include enhanced support for MFM/RLL/IDE hard disks. If
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you have a MFM/RLL/IDE disk, and there is no special reason to use
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the old hard disk driver instead, say Y. If you have an SCSI-only
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system, you can say N here.
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config IDE_GD
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tristate "generic ATA/ATAPI disk support"
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default y
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help
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Support for ATA/ATAPI disks (including ATAPI floppy drives).
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To compile this driver as a module, choose M here: the
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module will be called ide-disk.
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Do not compile this driver as a module if your root file system
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(the one containing the directory /) is located on the IDE disk.
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To compile this driver as a module, choose M here.
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The module will be called ide-gd_mod.
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If unsure, say Y.
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config IDE_GD_ATA
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bool "ATA disk support"
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depends on IDE_GD
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default y
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help
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This will include support for ATA hard disks.
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If unsure, say Y.
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config IDE_GD_ATAPI
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bool "ATAPI floppy support"
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depends on IDE_GD
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select IDE_ATAPI
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help
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This will include support for ATAPI floppy drives
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(i.e. Iomega ZIP or MKE LS-120).
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For information about jumper settings and the question
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of when a ZIP drive uses a partition table, see
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<http://www.win.tue.nl/~aeb/linux/zip/zip-1.html>.
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If unsure, say N.
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config BLK_DEV_IDECS
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tristate "PCMCIA IDE support"
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depends on PCMCIA
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@ -163,29 +182,6 @@ config BLK_DEV_IDETAPE
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To compile this driver as a module, choose M here: the
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module will be called ide-tape.
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config BLK_DEV_IDEFLOPPY
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tristate "Include IDE/ATAPI FLOPPY support"
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select IDE_ATAPI
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---help---
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If you have an IDE floppy drive which uses the ATAPI protocol,
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answer Y. ATAPI is a newer protocol used by IDE CD-ROM/tape/floppy
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drives, similar to the SCSI protocol.
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The LS-120 and the IDE/ATAPI Iomega ZIP drive are also supported by
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this driver. For information about jumper settings and the question
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of when a ZIP drive uses a partition table, see
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<http://www.win.tue.nl/~aeb/linux/zip/zip-1.html>.
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(ATAPI PD-CD/CDR drives are not supported by this driver; support
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for PD-CD/CDR drives is available if you answer Y to
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"SCSI emulation support", below).
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If you say Y here, the FLOPPY drive will be identified along with
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other IDE devices, as "hdb" or "hdc", or something similar (check
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the boot messages with dmesg).
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To compile this driver as a module, choose M here: the
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module will be called ide-floppy.
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config BLK_DEV_IDESCSI
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tristate "SCSI emulation support (DEPRECATED)"
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depends on SCSI
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@ -37,18 +37,25 @@ obj-$(CONFIG_IDE_H8300) += h8300/
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obj-$(CONFIG_IDE_GENERIC) += ide-generic.o
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obj-$(CONFIG_BLK_DEV_IDEPNP) += ide-pnp.o
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ide-disk_mod-y += ide-gd.o ide-disk.o ide-disk_ioctl.o
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ide-gd_mod-y += ide-gd.o
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ide-cd_mod-y += ide-cd.o ide-cd_ioctl.o ide-cd_verbose.o
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ide-floppy_mod-y += ide-gd-floppy.o ide-floppy.o ide-floppy_ioctl.o
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ifeq ($(CONFIG_IDE_GD_ATA), y)
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ide-gd_mod-y += ide-disk.o ide-disk_ioctl.o
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ifeq ($(CONFIG_IDE_PROC_FS), y)
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ide-disk_mod-y += ide-disk_proc.o
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ide-floppy_mod-y += ide-floppy_proc.o
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ide-gd_mod-y += ide-disk_proc.o
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endif
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endif
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obj-$(CONFIG_BLK_DEV_IDEDISK) += ide-disk_mod.o
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ifeq ($(CONFIG_IDE_GD_ATAPI), y)
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ide-gd_mod-y += ide-floppy.o ide-floppy_ioctl.o
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ifeq ($(CONFIG_IDE_PROC_FS), y)
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ide-gd_mod-y += ide-floppy_proc.o
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endif
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endif
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obj-$(CONFIG_IDE_GD) += ide-gd_mod.o
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obj-$(CONFIG_BLK_DEV_IDECD) += ide-cd_mod.o
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obj-$(CONFIG_BLK_DEV_IDEFLOPPY) += ide-floppy_mod.o
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obj-$(CONFIG_BLK_DEV_IDETAPE) += ide-tape.o
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ifeq ($(CONFIG_BLK_DEV_IDECS), y)
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@ -184,7 +184,7 @@ static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
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* 1073741822 == 549756 MB or 48bit addressing fake drive
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*/
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ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
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static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
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sector_t block)
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{
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ide_hwif_t *hwif = HWIF(drive);
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@ -333,7 +333,7 @@ static void idedisk_check_hpa(ide_drive_t *drive)
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}
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}
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void ide_disk_init_capacity(ide_drive_t *drive)
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static int ide_disk_get_capacity(ide_drive_t *drive)
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{
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u16 *id = drive->id;
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int lba;
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@ -382,6 +382,8 @@ void ide_disk_init_capacity(ide_drive_t *drive)
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} else
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drive->dev_flags &= ~IDE_DFLAG_LBA48;
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}
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return 0;
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}
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static void idedisk_prepare_flush(struct request_queue *q, struct request *rq)
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@ -590,7 +592,12 @@ ide_ext_devset_rw(wcache, wcache);
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ide_ext_devset_rw_sync(nowerr, nowerr);
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void ide_disk_setup(ide_drive_t *drive)
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static int ide_disk_check(ide_drive_t *drive, const char *s)
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{
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return 1;
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}
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static void ide_disk_setup(ide_drive_t *drive)
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{
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struct ide_disk_obj *idkp = drive->driver_data;
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ide_hwif_t *hwif = drive->hwif;
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@ -626,7 +633,7 @@ void ide_disk_setup(ide_drive_t *drive)
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drive->queue->max_sectors / 2);
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/* calculate drive capacity, and select LBA if possible */
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ide_disk_init_capacity(drive);
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ide_disk_get_capacity(drive);
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/*
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* if possible, give fdisk access to more of the drive,
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@ -682,7 +689,7 @@ void ide_disk_setup(ide_drive_t *drive)
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drive->dev_flags |= IDE_DFLAG_ATTACH;
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}
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void ide_disk_flush(ide_drive_t *drive)
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static void ide_disk_flush(ide_drive_t *drive)
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{
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if (ata_id_flush_enabled(drive->id) == 0 ||
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(drive->dev_flags & IDE_DFLAG_WCACHE) == 0)
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@ -692,7 +699,13 @@ void ide_disk_flush(ide_drive_t *drive)
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printk(KERN_INFO "%s: wcache flush failed!\n", drive->name);
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}
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int ide_disk_set_doorlock(ide_drive_t *drive, int on)
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static int ide_disk_init_media(ide_drive_t *drive, struct gendisk *disk)
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{
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return 0;
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}
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static int ide_disk_set_doorlock(ide_drive_t *drive, struct gendisk *disk,
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int on)
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{
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ide_task_t task;
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int ret;
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@ -711,3 +724,15 @@ int ide_disk_set_doorlock(ide_drive_t *drive, int on)
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return ret;
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}
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const struct ide_disk_ops ide_ata_disk_ops = {
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.check = ide_disk_check,
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.get_capacity = ide_disk_get_capacity,
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.setup = ide_disk_setup,
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.flush = ide_disk_flush,
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.init_media = ide_disk_init_media,
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.set_doorlock = ide_disk_set_doorlock,
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.do_request = ide_do_rw_disk,
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.end_request = ide_end_request,
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.ioctl = ide_disk_ioctl,
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};
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@ -1,22 +1,11 @@
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#ifndef __IDE_DISK_H
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#define __IDE_DISK_H
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struct ide_disk_obj {
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ide_drive_t *drive;
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ide_driver_t *driver;
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struct gendisk *disk;
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struct kref kref;
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unsigned int openers; /* protected by BKL for now */
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};
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sector_t ide_gd_capacity(ide_drive_t *);
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#include "ide-gd.h"
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#ifdef CONFIG_IDE_GD_ATA
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/* ide-disk.c */
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void ide_disk_init_capacity(ide_drive_t *);
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void ide_disk_setup(ide_drive_t *);
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void ide_disk_flush(ide_drive_t *);
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int ide_disk_set_doorlock(ide_drive_t *, int);
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ide_startstop_t ide_do_rw_disk(ide_drive_t *, struct request *, sector_t);
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extern const struct ide_disk_ops ide_ata_disk_ops;
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ide_decl_devset(address);
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ide_decl_devset(multcount);
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ide_decl_devset(nowerr);
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@ -24,12 +13,17 @@ ide_decl_devset(wcache);
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ide_decl_devset(acoustic);
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/* ide-disk_ioctl.c */
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int ide_disk_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
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int ide_disk_ioctl(ide_drive_t *, struct inode *, struct file *, unsigned int,
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unsigned long);
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#ifdef CONFIG_IDE_PROC_FS
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/* ide-disk_proc.c */
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extern ide_proc_entry_t ide_disk_proc[];
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extern const struct ide_proc_devset ide_disk_settings[];
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#endif
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#else
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#define ide_disk_proc NULL
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#define ide_disk_settings NULL
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#endif
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#endif /* __IDE_DISK_H */
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@ -13,12 +13,10 @@ static const struct ide_ioctl_devset ide_disk_ioctl_settings[] = {
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{ 0 }
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};
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int ide_disk_ioctl(struct inode *inode, struct file *file,
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int ide_disk_ioctl(ide_drive_t *drive, struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg)
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{
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struct block_device *bdev = inode->i_bdev;
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struct ide_disk_obj *idkp = ide_drv_g(bdev->bd_disk, ide_disk_obj);
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ide_drive_t *drive = idkp->drive;
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int err;
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err = ide_setting_ioctl(drive, bdev, cmd, arg, ide_disk_ioctl_settings);
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@ -68,7 +68,7 @@
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* Used to finish servicing a request. For read/write requests, we will call
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* ide_end_request to pass to the next buffer.
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*/
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int ide_floppy_end_request(ide_drive_t *drive, int uptodate, int nsecs)
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static int ide_floppy_end_request(ide_drive_t *drive, int uptodate, int nsecs)
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{
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idefloppy_floppy_t *floppy = drive->driver_data;
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struct request *rq = HWGROUP(drive)->rq;
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@ -280,13 +280,12 @@ static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy,
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pc->req_xfer = pc->buf_size = rq->data_len;
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}
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ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, struct request *rq,
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sector_t block_s)
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static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
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struct request *rq, sector_t block)
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{
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idefloppy_floppy_t *floppy = drive->driver_data;
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ide_hwif_t *hwif = drive->hwif;
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struct ide_atapi_pc *pc;
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unsigned long block = (unsigned long)block_s;
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ide_debug_log(IDE_DBG_FUNC, "%s: dev: %s, cmd: 0x%x, cmd_type: %x, "
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"errors: %d\n",
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@ -316,7 +315,7 @@ ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, struct request *rq,
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return ide_stopped;
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}
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pc = &floppy->queued_pc;
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idefloppy_create_rw_cmd(drive, pc, rq, block);
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idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block);
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} else if (blk_special_request(rq)) {
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pc = (struct ide_atapi_pc *) rq->buffer;
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} else if (blk_pc_request(rq)) {
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@ -406,7 +405,7 @@ static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive)
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* Determine if a media is present in the floppy drive, and if so, its LBA
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* capacity.
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*/
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int ide_floppy_get_capacity(ide_drive_t *drive)
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static int ide_floppy_get_capacity(ide_drive_t *drive)
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{
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idefloppy_floppy_t *floppy = drive->driver_data;
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struct gendisk *disk = floppy->disk;
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@ -505,9 +504,9 @@ int ide_floppy_get_capacity(ide_drive_t *drive)
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return rc;
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}
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void ide_floppy_setup(ide_drive_t *drive)
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static void ide_floppy_setup(ide_drive_t *drive)
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{
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struct ide_floppy_obj *floppy = drive->driver_data;
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struct ide_disk_obj *floppy = drive->driver_data;
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u16 *id = drive->id;
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drive->pc_callback = ide_floppy_callback;
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@ -547,3 +546,33 @@ void ide_floppy_setup(ide_drive_t *drive)
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drive->dev_flags |= IDE_DFLAG_ATTACH;
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}
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static void ide_floppy_flush(ide_drive_t *drive)
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{
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}
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static int ide_floppy_init_media(ide_drive_t *drive, struct gendisk *disk)
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{
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int ret = 0;
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if (ide_do_test_unit_ready(drive, disk))
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ide_do_start_stop(drive, disk, 1);
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ret = ide_floppy_get_capacity(drive);
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set_capacity(disk, ide_gd_capacity(drive));
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return ret;
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}
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const struct ide_disk_ops ide_atapi_disk_ops = {
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.check = ide_check_atapi_device,
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.get_capacity = ide_floppy_get_capacity,
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.setup = ide_floppy_setup,
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.flush = ide_floppy_flush,
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.init_media = ide_floppy_init_media,
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.set_doorlock = ide_set_media_lock,
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.do_request = ide_floppy_do_request,
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.end_request = ide_floppy_end_request,
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.ioctl = ide_floppy_ioctl,
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};
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@ -1,48 +1,10 @@
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#ifndef __IDE_FLOPPY_H
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#define __IDE_FLOPPY_H
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#define DRV_NAME "ide-floppy"
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#define PFX DRV_NAME ": "
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#include "ide-gd.h"
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/* define to see debug info */
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#define IDEFLOPPY_DEBUG_LOG 0
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#if IDEFLOPPY_DEBUG_LOG
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#define ide_debug_log(lvl, fmt, args...) __ide_debug_log(lvl, fmt, args)
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#else
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#define ide_debug_log(lvl, fmt, args...) do {} while (0)
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#endif
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/*
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* Most of our global data which we need to save even as we leave the driver
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* due to an interrupt or a timer event is stored in a variable of type
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* idefloppy_floppy_t, defined below.
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*/
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typedef struct ide_floppy_obj {
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ide_drive_t *drive;
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ide_driver_t *driver;
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struct gendisk *disk;
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struct kref kref;
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unsigned int openers; /* protected by BKL for now */
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/* Last failed packet command */
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struct ide_atapi_pc *failed_pc;
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/* used for blk_{fs,pc}_request() requests */
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struct ide_atapi_pc queued_pc;
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/* Last error information */
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u8 sense_key, asc, ascq;
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int progress_indication;
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/* Device information */
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/* Current format */
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int blocks, block_size, bs_factor;
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/* Last format capacity descriptor */
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u8 cap_desc[8];
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/* Copy of the flexible disk page */
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u8 flexible_disk_page[32];
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} idefloppy_floppy_t;
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#ifdef CONFIG_IDE_GD_ATAPI
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typedef struct ide_disk_obj idefloppy_floppy_t;
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/*
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* Pages of the SELECT SENSE / MODE SENSE packet commands.
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@ -57,23 +19,23 @@ typedef struct ide_floppy_obj {
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#define IDEFLOPPY_IOCTL_FORMAT_START 0x4602
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#define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603
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sector_t ide_gd_capacity(ide_drive_t *);
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/* ide-floppy.c */
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extern const struct ide_disk_ops ide_atapi_disk_ops;
|
||||
void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *, u8);
|
||||
void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *);
|
||||
int ide_floppy_get_capacity(ide_drive_t *);
|
||||
void ide_floppy_setup(ide_drive_t *);
|
||||
ide_startstop_t ide_floppy_do_request(ide_drive_t *, struct request *, sector_t);
|
||||
int ide_floppy_end_request(ide_drive_t *, int, int);
|
||||
|
||||
/* ide-floppy_ioctl.c */
|
||||
int ide_floppy_ioctl(struct inode *, struct file *, unsigned, unsigned long);
|
||||
int ide_floppy_ioctl(ide_drive_t *, struct inode *, struct file *, unsigned int,
|
||||
unsigned long);
|
||||
|
||||
#ifdef CONFIG_IDE_PROC_FS
|
||||
/* ide-floppy_proc.c */
|
||||
extern ide_proc_entry_t ide_floppy_proc[];
|
||||
extern const struct ide_proc_devset ide_floppy_settings[];
|
||||
#endif
|
||||
#else
|
||||
#define ide_floppy_proc NULL
|
||||
#define ide_floppy_settings NULL
|
||||
#endif
|
||||
|
||||
#endif /*__IDE_FLOPPY_H */
|
||||
|
|
|
|||
|
|
@ -33,7 +33,7 @@
|
|||
|
||||
static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg)
|
||||
{
|
||||
struct ide_floppy_obj *floppy = drive->driver_data;
|
||||
struct ide_disk_obj *floppy = drive->driver_data;
|
||||
struct ide_atapi_pc pc;
|
||||
u8 header_len, desc_cnt;
|
||||
int i, blocks, length, u_array_size, u_index;
|
||||
|
|
@ -260,13 +260,10 @@ static int ide_floppy_format_ioctl(ide_drive_t *drive, struct file *file,
|
|||
}
|
||||
}
|
||||
|
||||
int ide_floppy_ioctl(struct inode *inode, struct file *file,
|
||||
unsigned int cmd, unsigned long arg)
|
||||
int ide_floppy_ioctl(ide_drive_t *drive, struct inode *inode,
|
||||
struct file *file, unsigned int cmd, unsigned long arg)
|
||||
{
|
||||
struct block_device *bdev = inode->i_bdev;
|
||||
struct ide_floppy_obj *floppy = ide_drv_g(bdev->bd_disk,
|
||||
ide_floppy_obj);
|
||||
ide_drive_t *drive = floppy->drive;
|
||||
struct ide_atapi_pc pc;
|
||||
void __user *argp = (void __user *)arg;
|
||||
int err;
|
||||
|
|
|
|||
|
|
@ -1,309 +0,0 @@
|
|||
#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");
|
||||
|
|
@ -15,9 +15,14 @@
|
|||
#endif
|
||||
|
||||
#include "ide-disk.h"
|
||||
#include "ide-floppy.h"
|
||||
|
||||
#define IDE_GD_VERSION "1.18"
|
||||
|
||||
/* 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 *);
|
||||
|
|
@ -64,7 +69,7 @@ static void ide_gd_remove(ide_drive_t *drive)
|
|||
|
||||
del_gendisk(g);
|
||||
|
||||
ide_disk_flush(drive);
|
||||
drive->disk_ops->flush(drive);
|
||||
|
||||
ide_disk_put(idkp);
|
||||
}
|
||||
|
|
@ -75,6 +80,7 @@ static void ide_disk_release(struct kref *kref)
|
|||
ide_drive_t *drive = idkp->drive;
|
||||
struct gendisk *g = idkp->disk;
|
||||
|
||||
drive->disk_ops = NULL;
|
||||
drive->driver_data = NULL;
|
||||
g->private_data = NULL;
|
||||
put_disk(g);
|
||||
|
|
@ -89,7 +95,7 @@ static void ide_disk_release(struct kref *kref)
|
|||
static void ide_gd_resume(ide_drive_t *drive)
|
||||
{
|
||||
if (ata_id_hpa_enabled(drive->id))
|
||||
ide_disk_init_capacity(drive);
|
||||
(void)drive->disk_ops->get_capacity(drive);
|
||||
}
|
||||
|
||||
static void ide_gd_shutdown(ide_drive_t *drive)
|
||||
|
|
@ -110,7 +116,7 @@ static void ide_gd_shutdown(ide_drive_t *drive)
|
|||
#else
|
||||
if (system_state == SYSTEM_RESTART) {
|
||||
#endif
|
||||
ide_disk_flush(drive);
|
||||
drive->disk_ops->flush(drive);
|
||||
return;
|
||||
}
|
||||
|
||||
|
|
@ -122,19 +128,31 @@ static void ide_gd_shutdown(ide_drive_t *drive)
|
|||
#ifdef CONFIG_IDE_PROC_FS
|
||||
static ide_proc_entry_t *ide_disk_proc_entries(ide_drive_t *drive)
|
||||
{
|
||||
return ide_disk_proc;
|
||||
return (drive->media == ide_disk) ? ide_disk_proc : ide_floppy_proc;
|
||||
}
|
||||
|
||||
static const struct ide_proc_devset *ide_disk_proc_devsets(ide_drive_t *drive)
|
||||
{
|
||||
return ide_disk_settings;
|
||||
return (drive->media == ide_disk) ? ide_disk_settings
|
||||
: ide_floppy_settings;
|
||||
}
|
||||
#endif
|
||||
|
||||
static ide_startstop_t ide_gd_do_request(ide_drive_t *drive,
|
||||
struct request *rq, sector_t sector)
|
||||
{
|
||||
return drive->disk_ops->do_request(drive, rq, sector);
|
||||
}
|
||||
|
||||
static int ide_gd_end_request(ide_drive_t *drive, int uptodate, int nrsecs)
|
||||
{
|
||||
return drive->disk_ops->end_request(drive, uptodate, nrsecs);
|
||||
}
|
||||
|
||||
static ide_driver_t ide_gd_driver = {
|
||||
.gen_driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.name = "ide-disk",
|
||||
.name = "ide-gd",
|
||||
.bus = &ide_bus_type,
|
||||
},
|
||||
.probe = ide_gd_probe,
|
||||
|
|
@ -142,8 +160,8 @@ static ide_driver_t ide_gd_driver = {
|
|||
.resume = ide_gd_resume,
|
||||
.shutdown = ide_gd_shutdown,
|
||||
.version = IDE_GD_VERSION,
|
||||
.do_request = ide_do_rw_disk,
|
||||
.end_request = ide_end_request,
|
||||
.do_request = ide_gd_do_request,
|
||||
.end_request = ide_gd_end_request,
|
||||
.error = __ide_error,
|
||||
#ifdef CONFIG_IDE_PROC_FS
|
||||
.proc_entries = ide_disk_proc_entries,
|
||||
|
|
@ -156,6 +174,7 @@ static int ide_gd_open(struct inode *inode, struct file *filp)
|
|||
struct gendisk *disk = inode->i_bdev->bd_disk;
|
||||
struct ide_disk_obj *idkp;
|
||||
ide_drive_t *drive;
|
||||
int ret = 0;
|
||||
|
||||
idkp = ide_disk_get(disk);
|
||||
if (idkp == NULL)
|
||||
|
|
@ -163,19 +182,49 @@ static int ide_gd_open(struct inode *inode, struct file *filp)
|
|||
|
||||
drive = idkp->drive;
|
||||
|
||||
ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
|
||||
|
||||
idkp->openers++;
|
||||
|
||||
if ((drive->dev_flags & IDE_DFLAG_REMOVABLE) && idkp->openers == 1) {
|
||||
drive->dev_flags &= ~IDE_DFLAG_FORMAT_IN_PROGRESS;
|
||||
/* Just in case */
|
||||
|
||||
ret = drive->disk_ops->init_media(drive, disk);
|
||||
|
||||
/*
|
||||
* 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
|
||||
*/
|
||||
if (ret && (filp->f_flags & O_NDELAY) == 0) {
|
||||
ret = -EIO;
|
||||
goto out_put_idkp;
|
||||
}
|
||||
|
||||
if ((drive->dev_flags & IDE_DFLAG_WP) && (filp->f_mode & 2)) {
|
||||
ret = -EROFS;
|
||||
goto out_put_idkp;
|
||||
}
|
||||
|
||||
/*
|
||||
* Ignore the return code from door_lock,
|
||||
* since the open() has already succeeded,
|
||||
* and the door_lock is irrelevant at this point.
|
||||
*/
|
||||
ide_disk_set_doorlock(drive, 1);
|
||||
drive->disk_ops->set_doorlock(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)
|
||||
|
|
@ -184,11 +233,15 @@ static int ide_gd_release(struct inode *inode, struct file *filp)
|
|||
struct ide_disk_obj *idkp = ide_drv_g(disk, ide_disk_obj);
|
||||
ide_drive_t *drive = idkp->drive;
|
||||
|
||||
if (idkp->openers == 1)
|
||||
ide_disk_flush(drive);
|
||||
ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
|
||||
|
||||
if ((drive->dev_flags & IDE_DFLAG_REMOVABLE) && idkp->openers == 1)
|
||||
ide_disk_set_doorlock(drive, 0);
|
||||
if (idkp->openers == 1)
|
||||
drive->disk_ops->flush(drive);
|
||||
|
||||
if ((drive->dev_flags & IDE_DFLAG_REMOVABLE) && idkp->openers == 1) {
|
||||
drive->disk_ops->set_doorlock(drive, disk, 0);
|
||||
drive->dev_flags &= ~IDE_DFLAG_FORMAT_IN_PROGRESS;
|
||||
}
|
||||
|
||||
idkp->openers--;
|
||||
|
||||
|
|
@ -233,11 +286,21 @@ static int ide_gd_revalidate_disk(struct gendisk *disk)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int ide_gd_ioctl(struct inode *inode, struct file *file,
|
||||
unsigned int cmd, unsigned long arg)
|
||||
{
|
||||
struct block_device *bdev = inode->i_bdev;
|
||||
struct ide_disk_obj *idkp = ide_drv_g(bdev->bd_disk, ide_disk_obj);
|
||||
ide_drive_t *drive = idkp->drive;
|
||||
|
||||
return drive->disk_ops->ioctl(drive, inode, file, cmd, arg);
|
||||
}
|
||||
|
||||
static struct block_device_operations ide_gd_ops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = ide_gd_open,
|
||||
.release = ide_gd_release,
|
||||
.ioctl = ide_disk_ioctl,
|
||||
.ioctl = ide_gd_ioctl,
|
||||
.getgeo = ide_gd_getgeo,
|
||||
.media_changed = ide_gd_media_changed,
|
||||
.revalidate_disk = ide_gd_revalidate_disk
|
||||
|
|
@ -245,19 +308,37 @@ static struct block_device_operations ide_gd_ops = {
|
|||
|
||||
static int ide_gd_probe(ide_drive_t *drive)
|
||||
{
|
||||
const struct ide_disk_ops *disk_ops = NULL;
|
||||
struct ide_disk_obj *idkp;
|
||||
struct gendisk *g;
|
||||
|
||||
/* strstr("foo", "") is non-NULL */
|
||||
if (!strstr("ide-disk", drive->driver_req))
|
||||
if (!strstr("ide-gd", drive->driver_req))
|
||||
goto failed;
|
||||
|
||||
if (drive->media != ide_disk)
|
||||
#ifdef CONFIG_IDE_GD_ATA
|
||||
if (drive->media == ide_disk)
|
||||
disk_ops = &ide_ata_disk_ops;
|
||||
#endif
|
||||
#ifdef CONFIG_IDE_GD_ATAPI
|
||||
if (drive->media == ide_floppy)
|
||||
disk_ops = &ide_atapi_disk_ops;
|
||||
#endif
|
||||
if (disk_ops == NULL)
|
||||
goto failed;
|
||||
|
||||
if (disk_ops->check(drive, DRV_NAME) == 0) {
|
||||
printk(KERN_ERR PFX "%s: not supported by this driver\n",
|
||||
drive->name);
|
||||
goto failed;
|
||||
}
|
||||
|
||||
idkp = kzalloc(sizeof(*idkp), GFP_KERNEL);
|
||||
if (!idkp)
|
||||
if (!idkp) {
|
||||
printk(KERN_ERR PFX "%s: can't allocate a disk structure\n",
|
||||
drive->name);
|
||||
goto failed;
|
||||
}
|
||||
|
||||
g = alloc_disk_node(IDE_DISK_MINORS, hwif_to_node(drive->hwif));
|
||||
if (!g)
|
||||
|
|
@ -274,8 +355,10 @@ static int ide_gd_probe(ide_drive_t *drive)
|
|||
g->private_data = &idkp->driver;
|
||||
|
||||
drive->driver_data = idkp;
|
||||
drive->debug_mask = debug_mask;
|
||||
drive->disk_ops = disk_ops;
|
||||
|
||||
ide_disk_setup(drive);
|
||||
disk_ops->setup(drive);
|
||||
|
||||
set_capacity(g, ide_gd_capacity(drive));
|
||||
|
||||
|
|
@ -296,6 +379,7 @@ static int ide_gd_probe(ide_drive_t *drive)
|
|||
|
||||
static int __init ide_gd_init(void)
|
||||
{
|
||||
printk(KERN_INFO DRV_NAME " driver " IDE_GD_VERSION "\n");
|
||||
return driver_register(&ide_gd_driver.gen_driver);
|
||||
}
|
||||
|
||||
|
|
@ -306,7 +390,9 @@ static void __exit ide_gd_exit(void)
|
|||
|
||||
MODULE_ALIAS("ide:*m-disk*");
|
||||
MODULE_ALIAS("ide-disk");
|
||||
MODULE_ALIAS("ide:*m-floppy*");
|
||||
MODULE_ALIAS("ide-floppy");
|
||||
module_init(ide_gd_init);
|
||||
module_exit(ide_gd_exit);
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_DESCRIPTION("ATA DISK Driver");
|
||||
MODULE_DESCRIPTION("generic ATA/ATAPI disk driver");
|
||||
|
|
|
|||
44
drivers/ide/ide-gd.h
Normal file
44
drivers/ide/ide-gd.h
Normal file
|
|
@ -0,0 +1,44 @@
|
|||
#ifndef __IDE_GD_H
|
||||
#define __IDE_GD_H
|
||||
|
||||
#define DRV_NAME "ide-gd"
|
||||
#define PFX DRV_NAME ": "
|
||||
|
||||
/* define to see debug info */
|
||||
#define IDE_GD_DEBUG_LOG 0
|
||||
|
||||
#if IDE_GD_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
|
||||
|
||||
struct ide_disk_obj {
|
||||
ide_drive_t *drive;
|
||||
ide_driver_t *driver;
|
||||
struct gendisk *disk;
|
||||
struct kref kref;
|
||||
unsigned int openers; /* protected by BKL for now */
|
||||
|
||||
/* Last failed packet command */
|
||||
struct ide_atapi_pc *failed_pc;
|
||||
/* used for blk_{fs,pc}_request() requests */
|
||||
struct ide_atapi_pc queued_pc;
|
||||
|
||||
/* Last error information */
|
||||
u8 sense_key, asc, ascq;
|
||||
|
||||
int progress_indication;
|
||||
|
||||
/* Device information */
|
||||
/* Current format */
|
||||
int blocks, block_size, bs_factor;
|
||||
/* Last format capacity descriptor */
|
||||
u8 cap_desc[8];
|
||||
/* Copy of the flexible disk page */
|
||||
u8 flexible_disk_page[32];
|
||||
};
|
||||
|
||||
sector_t ide_gd_capacity(ide_drive_t *);
|
||||
|
||||
#endif /* __IDE_GD_H */
|
||||
|
|
@ -179,7 +179,7 @@ config LEDS_TRIGGER_TIMER
|
|||
|
||||
config LEDS_TRIGGER_IDE_DISK
|
||||
bool "LED IDE Disk Trigger"
|
||||
depends on LEDS_TRIGGERS && BLK_DEV_IDEDISK
|
||||
depends on LEDS_TRIGGERS && IDE_GD_ATA
|
||||
help
|
||||
This allows LEDs to be controlled by IDE disk activity.
|
||||
If unsure, say Y.
|
||||
|
|
|
|||
|
|
@ -461,6 +461,23 @@ struct ide_acpi_drive_link;
|
|||
struct ide_acpi_hwif_link;
|
||||
#endif
|
||||
|
||||
struct ide_drive_s;
|
||||
|
||||
struct ide_disk_ops {
|
||||
int (*check)(struct ide_drive_s *, const char *);
|
||||
int (*get_capacity)(struct ide_drive_s *);
|
||||
void (*setup)(struct ide_drive_s *);
|
||||
void (*flush)(struct ide_drive_s *);
|
||||
int (*init_media)(struct ide_drive_s *, struct gendisk *);
|
||||
int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
|
||||
int);
|
||||
ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
|
||||
sector_t);
|
||||
int (*end_request)(struct ide_drive_s *, int, int);
|
||||
int (*ioctl)(struct ide_drive_s *, struct inode *,
|
||||
struct file *, unsigned int, unsigned long);
|
||||
};
|
||||
|
||||
/* ATAPI device flags */
|
||||
enum {
|
||||
IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
|
||||
|
|
@ -594,6 +611,8 @@ struct ide_drive_s {
|
|||
#endif
|
||||
struct hwif_s *hwif; /* actually (ide_hwif_t *) */
|
||||
|
||||
const struct ide_disk_ops *disk_ops;
|
||||
|
||||
unsigned long dev_flags;
|
||||
|
||||
unsigned long sleep; /* sleep until this time */
|
||||
|
|
|
|||
Loading…
Reference in a new issue