ide-floppy: use ide_pio_bytes()
* Fix ide_init_sg_cmd() setup for non-fs requests.
* Convert ide_pc_intr() to use ide_pio_bytes() for floppy media.
* Remove no longer needed ide_io_buffers() and sg/sg_cnt fields
from struct ide_atapi_pc.
* Remove partial completions; kill idefloppy_update_buffers(), as a
result.
* Add some more debugging statements.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index 40f413b..100e6f9 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -71,49 +71,6 @@
}
EXPORT_SYMBOL_GPL(ide_check_atapi_device);
-/* PIO data transfer routine using the scatter gather table. */
-int ide_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc,
- unsigned int bcount, int write)
-{
- ide_hwif_t *hwif = drive->hwif;
- const struct ide_tp_ops *tp_ops = hwif->tp_ops;
- xfer_func_t *xf = write ? tp_ops->output_data : tp_ops->input_data;
- struct scatterlist *sg = pc->sg;
- char *buf;
- int count, done = 0;
-
- while (bcount) {
- count = min(sg->length - pc->b_count, bcount);
-
- if (PageHighMem(sg_page(sg))) {
- unsigned long flags;
-
- local_irq_save(flags);
- buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
- xf(drive, NULL, buf + pc->b_count, count);
- kunmap_atomic(buf - sg->offset, KM_IRQ0);
- local_irq_restore(flags);
- } else {
- buf = sg_virt(sg);
- xf(drive, NULL, buf + pc->b_count, count);
- }
-
- bcount -= count;
- pc->b_count += count;
- done += count;
-
- if (pc->b_count == sg->length) {
- if (!--pc->sg_cnt)
- break;
- pc->sg = sg = sg_next(sg);
- pc->b_count = 0;
- }
- }
-
- return done;
-}
-EXPORT_SYMBOL_GPL(ide_io_buffers);
-
void ide_init_pc(struct ide_atapi_pc *pc)
{
memset(pc, 0, sizeof(*pc));
@@ -353,6 +310,9 @@
pc->xferred = pc->req_xfer;
if (drive->pc_update_buffers)
drive->pc_update_buffers(drive, pc);
+
+ if (drive->media == ide_floppy)
+ ide_complete_rq(drive, 0, blk_rq_bytes(rq));
}
debug_log("%s: DMA finished\n", drive->name);
}
@@ -408,12 +368,19 @@
rq->errors = 0;
ide_complete_rq(drive, 0, blk_rq_bytes(rq));
} else {
+ unsigned int done;
+
if (blk_fs_request(rq) == 0 && uptodate <= 0) {
if (rq->errors == 0)
rq->errors = -EIO;
}
- ide_complete_rq(drive, uptodate ? 0 : -EIO,
- ide_rq_bytes(rq));
+
+ if (drive->media == ide_tape)
+ done = ide_rq_bytes(rq); /* FIXME */
+ else
+ done = blk_rq_bytes(rq);
+
+ ide_complete_rq(drive, uptodate ? 0 : -EIO, done);
}
return ide_stopped;
@@ -446,14 +413,11 @@
xferfunc = write ? tp_ops->output_data : tp_ops->input_data;
- if ((drive->media == ide_floppy && !pc->buf) ||
- (drive->media == ide_tape && pc->bh)) {
+ if (drive->media == ide_floppy && pc->buf == NULL) {
+ done = min_t(unsigned int, bcount, cmd->nleft);
+ ide_pio_bytes(drive, cmd, write, done);
+ } else if (drive->media == ide_tape && pc->bh) {
done = drive->pc_io_buffers(drive, pc, bcount, write);
-
- /* FIXME: don't do partial completions */
- if (drive->media == ide_floppy)
- ide_complete_rq(drive, 0,
- done ? done : ide_rq_bytes(rq));
} else {
done = min_t(unsigned int, bcount, pc->req_xfer - pc->xferred);
xferfunc(drive, NULL, pc->cur_pos, done);