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, 37 insertions, 8 deletions

diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 802e0968e32f..58746c748c12 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -68,7 +68,7 @@
  * Used to finish servicing a request. For read/write requests, we will call
  * ide_end_request to pass to the next buffer.
  */
-int ide_floppy_end_request(ide_drive_t *drive, int uptodate, int nsecs)
+static 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;
@@ -280,13 +280,12 @@ static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy,
         pc->req_xfer = pc->buf_size = rq->data_len;
 }
 
-ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, struct request *rq,
-                                      sector_t block_s)
+static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
+                                             struct request *rq, sector_t block)
 {
         idefloppy_floppy_t *floppy = drive->driver_data;
         ide_hwif_t *hwif = drive->hwif;
         struct ide_atapi_pc *pc;
-        unsigned long block = (unsigned long)block_s;
 
         ide_debug_log(IDE_DBG_FUNC, "%s: dev: %s, cmd: 0x%x, cmd_type: %x, "
                       "errors: %d\n",
@@ -316,7 +315,7 @@ ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, struct request *rq,
                         return ide_stopped;
                 }
                 pc = &floppy->queued_pc;
-                idefloppy_create_rw_cmd(drive, pc, rq, block);
+                idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block);
         } else if (blk_special_request(rq)) {
                 pc = (struct ide_atapi_pc *) rq->buffer;
         } else if (blk_pc_request(rq)) {
@@ -406,7 +405,7 @@ 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.
  */
-int ide_floppy_get_capacity(ide_drive_t *drive)
+static int ide_floppy_get_capacity(ide_drive_t *drive)
 {
         idefloppy_floppy_t *floppy = drive->driver_data;
         struct gendisk *disk = floppy->disk;
@@ -505,9 +504,9 @@ int ide_floppy_get_capacity(ide_drive_t *drive)
         return rc;
 }
 
-void ide_floppy_setup(ide_drive_t *drive)
+static void ide_floppy_setup(ide_drive_t *drive)
 {
-        struct ide_floppy_obj *floppy = drive->driver_data;
+        struct ide_disk_obj *floppy = drive->driver_data;
         u16 *id = drive->id;
 
         drive->pc_callback       = ide_floppy_callback;
@@ -547,3 +546,33 @@ void ide_floppy_setup(ide_drive_t *drive)
 
         drive->dev_flags |= IDE_DFLAG_ATTACH;
 }
+
+static void ide_floppy_flush(ide_drive_t *drive)
+{
+}
+
+static int ide_floppy_init_media(ide_drive_t *drive, struct gendisk *disk)
+{
+        int ret = 0;
+
+        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));
+
+        return ret;
+}
+
+const struct ide_disk_ops ide_atapi_disk_ops = {
+        .check          = ide_check_atapi_device,
+        .get_capacity   = ide_floppy_get_capacity,
+        .setup          = ide_floppy_setup,
+        .flush          = ide_floppy_flush,
+        .init_media     = ide_floppy_init_media,
+        .set_doorlock   = ide_set_media_lock,
+        .do_request     = ide_floppy_do_request,
+        .end_request    = ide_floppy_end_request,
+        .ioctl          = ide_floppy_ioctl,
+};