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Commit 1823649b authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz
Browse files

ide: add ide_read_bcount_and_ireason() helper 



Add ide_read_bcount_and_ireason() helper and use it instead of ->INB
in {cdrom_newpc,ide_pc}_intr().

Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent 88a72109

drivers/ide/ide-atapi.c

+2 −4
Original line number Diff line number Diff line
@@ -107,11 +107,9 @@ ide_startstop_t ide_pc_intr(ide_drive_t *drive, struct ide_atapi_pc *pc, 
		ide_dma_off(drive);

		return ide_do_reset(drive);

	}

	/* Get the number of bytes to transfer on this interrupt. */

	bcount = (hwif->INB(hwif->io_ports.lbah_addr) << 8) |

		  hwif->INB(hwif->io_ports.lbam_addr);



	ireason = hwif->INB(hwif->io_ports.nsect_addr);

	/* Get the number of bytes to transfer on this interrupt. */

	ide_read_bcount_and_ireason(drive, &bcount, &ireason);



	if (ireason & CD) {

		printk(KERN_ERR "%s: CoD != 0 in %s\n", drive->name, __func__);

drivers/ide/ide-cd.c

+4 −8
Original line number Diff line number Diff line
@@ -895,10 +895,11 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) 
	struct request *rq = HWGROUP(drive)->rq;

	xfer_func_t *xferfunc;

	ide_expiry_t *expiry = NULL;

	int dma_error = 0, dma, stat, ireason, len, thislen, uptodate = 0;

	int dma_error = 0, dma, stat, thislen, uptodate = 0;

	int write = (rq_data_dir(rq) == WRITE) ? 1 : 0;

	unsigned int timeout;

	u8 lowcyl, highcyl;

	u16 len;

	u8 ireason;



	/* check for errors */

	dma = info->dma;
@@ -926,12 +927,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) 
		goto end_request;

	}



	/* ok we fall to pio :/ */

	ireason = hwif->INB(hwif->io_ports.nsect_addr) & 0x3;

	lowcyl  = hwif->INB(hwif->io_ports.lbam_addr);

	highcyl = hwif->INB(hwif->io_ports.lbah_addr);



	len = lowcyl + (256 * highcyl);

	ide_read_bcount_and_ireason(drive, &len, &ireason);



	thislen = blk_fs_request(rq) ? len : rq->data_len;

	if (thislen > len)

drivers/ide/ide-iops.c

+15 −0
Original line number Diff line number Diff line
@@ -405,6 +405,21 @@ u8 ide_read_error(ide_drive_t *drive) 
}

EXPORT_SYMBOL_GPL(ide_read_error);



void ide_read_bcount_and_ireason(ide_drive_t *drive, u16 *bcount, u8 *ireason)

{

	ide_task_t task;



	memset(&task, 0, sizeof(task));

	task.tf_flags = IDE_TFLAG_IN_LBAH | IDE_TFLAG_IN_LBAM |

			IDE_TFLAG_IN_NSECT;



	drive->hwif->tf_read(drive, &task);



	*bcount = (task.tf.lbah << 8) | task.tf.lbam;

	*ireason = task.tf.nsect & 3;

}

EXPORT_SYMBOL_GPL(ide_read_bcount_and_ireason);



void ide_fix_driveid (struct hd_driveid *id)

{

#ifndef __LITTLE_ENDIAN

include/linux/ide.h

+1 −0
Original line number Diff line number Diff line
@@ -958,6 +958,7 @@ extern void SELECT_DRIVE(ide_drive_t *); 
void SELECT_MASK(ide_drive_t *, int);



u8 ide_read_error(ide_drive_t *);

void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);



extern int drive_is_ready(ide_drive_t *);