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Commit af5dfe8c authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz
Browse files

cmd640: add __set_prefetch_mode() 



Factor out the common code from check_prefetch()
and set_prefetch_mode() to __set_prefetch_mode().

Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent 151a6701

drivers/ide/pci/cmd640.c

+20 −22
Original line number Diff line number Diff line
@@ -374,6 +374,21 @@ static void cmd640_dump_regs(void) 
}

#endif



static void __set_prefetch_mode(ide_drive_t *drive, int mode)

{

	if (mode) {	/* want prefetch on? */

#if CMD640_PREFETCH_MASKS

		drive->no_unmask = 1;

		drive->unmask = 0;

#endif

		drive->no_io_32bit = 0;

	} else {

		drive->no_unmask = 0;

		drive->no_io_32bit = 1;

		drive->io_32bit = 0;

	}

}



#ifndef CONFIG_BLK_DEV_CMD640_ENHANCED

/*

 * Check whether prefetch is on for a drive,
@@ -383,19 +398,10 @@ static void __init check_prefetch(ide_drive_t *drive, unsigned int index) 
{

	u8 b = get_cmd640_reg(prefetch_regs[index]);



	if (b & prefetch_masks[index]) {	/* is prefetch off? */

		drive->no_unmask = 0;

		drive->no_io_32bit = 1;

		drive->io_32bit = 0;

	} else {

#if CMD640_PREFETCH_MASKS

		drive->no_unmask = 1;

		drive->unmask = 0;

#endif

		drive->no_io_32bit = 0;

	}

	__set_prefetch_mode(drive, (b & prefetch_masks[index]) ? 0 : 1);

}

#else



/*

 * Sets prefetch mode for a drive.

 */
@@ -407,19 +413,11 @@ static void set_prefetch_mode(ide_drive_t *drive, unsigned int index, int mode) 


	spin_lock_irqsave(&cmd640_lock, flags);

	b = __get_cmd640_reg(reg);

	if (mode) {	/* want prefetch on? */

#if CMD640_PREFETCH_MASKS

		drive->no_unmask = 1;

		drive->unmask = 0;

#endif

		drive->no_io_32bit = 0;

	__set_prefetch_mode(drive, mode);

	if (mode)

		b &= ~prefetch_masks[index];	/* enable prefetch */

	} else {

		drive->no_unmask = 0;

		drive->no_io_32bit = 1;

		drive->io_32bit = 0;

	else

		b |= prefetch_masks[index];	/* disable prefetch */

	}

	__put_cmd640_reg(reg, b);

	spin_unlock_irqrestore(&cmd640_lock, flags);

}