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, 32 insertions, 7 deletions

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 751be7af22c2..223750c1b5a6 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -184,8 +184,8 @@ static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
  * 1073741822 == 549756 MB or 48bit addressing fake drive
  */
 
-ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
-                               sector_t block)
+static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
+                                      sector_t block)
 {
         ide_hwif_t *hwif = HWIF(drive);
 
@@ -333,7 +333,7 @@ static void idedisk_check_hpa(ide_drive_t *drive)
         }
 }
 
-void ide_disk_init_capacity(ide_drive_t *drive)
+static int ide_disk_get_capacity(ide_drive_t *drive)
 {
         u16 *id = drive->id;
         int lba;
@@ -382,6 +382,8 @@ void ide_disk_init_capacity(ide_drive_t *drive)
                 } else
                         drive->dev_flags &= ~IDE_DFLAG_LBA48;
         }
+
+        return 0;
 }
 
 static void idedisk_prepare_flush(struct request_queue *q, struct request *rq)
@@ -590,7 +592,12 @@ ide_ext_devset_rw(wcache, wcache);
 
 ide_ext_devset_rw_sync(nowerr, nowerr);
 
-void ide_disk_setup(ide_drive_t *drive)
+static int ide_disk_check(ide_drive_t *drive, const char *s)
+{
+        return 1;
+}
+
+static void ide_disk_setup(ide_drive_t *drive)
 {
         struct ide_disk_obj *idkp = drive->driver_data;
         ide_hwif_t *hwif = drive->hwif;
@@ -626,7 +633,7 @@ void ide_disk_setup(ide_drive_t *drive)
                          drive->queue->max_sectors / 2);
 
         /* calculate drive capacity, and select LBA if possible */
-        ide_disk_init_capacity(drive);
+        ide_disk_get_capacity(drive);
 
         /*
          * if possible, give fdisk access to more of the drive,
@@ -682,7 +689,7 @@ void ide_disk_setup(ide_drive_t *drive)
                 drive->dev_flags |= IDE_DFLAG_ATTACH;
 }
 
-void ide_disk_flush(ide_drive_t *drive)
+static void ide_disk_flush(ide_drive_t *drive)
 {
         if (ata_id_flush_enabled(drive->id) == 0 ||
             (drive->dev_flags & IDE_DFLAG_WCACHE) == 0)
@@ -692,7 +699,13 @@ void ide_disk_flush(ide_drive_t *drive)
                 printk(KERN_INFO "%s: wcache flush failed!\n", drive->name);
 }
 
-int ide_disk_set_doorlock(ide_drive_t *drive, int on)
+static int ide_disk_init_media(ide_drive_t *drive, struct gendisk *disk)
+{
+        return 0;
+}
+
+static int ide_disk_set_doorlock(ide_drive_t *drive, struct gendisk *disk,
+                                 int on)
 {
         ide_task_t task;
         int ret;
@@ -711,3 +724,15 @@ int ide_disk_set_doorlock(ide_drive_t *drive, int on)
 
         return ret;
 }
+
+const struct ide_disk_ops ide_ata_disk_ops = {
+        .check          = ide_disk_check,
+        .get_capacity   = ide_disk_get_capacity,
+        .setup          = ide_disk_setup,
+        .flush          = ide_disk_flush,
+        .init_media     = ide_disk_init_media,
+        .set_doorlock   = ide_disk_set_doorlock,
+        .do_request     = ide_do_rw_disk,
+        .end_request    = ide_end_request,
+        .ioctl          = ide_disk_ioctl,
+};