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>

1 files changed, 19 insertions, 0 deletions

diff --git a/include/linux/ide.h b/include/linux/ide.h
index 488808891acb..89e53cfbc787 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -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 */