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libata: implement and use HORKAGE_NOSETXFER, take#2 

PIONEER DVD-RW DVRTD08 times out SETXFER if no media is present.  The
device is SATA and simply skipping SETXFER works around the problem.
Implement ATA_HORKAGE_NOSETXFER and apply it to the device.

Reported by Moritz Rigler in the following thread.

  http://thread.gmane.org/gmane.linux.ide/36790

and by Lars in bko#9540.

Updated to whine and ignore NOSETXFER if PATA component is detected as
suggested by Alan Cox.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Moritz Rigler <linux-ide@momail.e4ward.com>
Reported-by: Lars <lars21ce@gmx.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Tejun Heo 2009-07-09 09:27:50 +09:00 committed by Jeff Garzik
parent fe2c4d018f
commit d0cb43b35d
2 changed files with 19 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/ata/libata-core.c
View File

@ -3392,17 +3392,27 @@ int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel)
static int ata_dev_set_mode(struct ata_device *dev)
{
struct ata_port *ap = dev->link->ap;
struct ata_eh_context *ehc = &dev->link->eh_context;
const bool nosetxfer = dev->horkage & ATA_HORKAGE_NOSETXFER;
const char *dev_err_whine = "";
int ign_dev_err = 0;
unsigned int err_mask;
unsigned int err_mask = 0;
int rc;
dev->flags &= ~ATA_DFLAG_PIO;
if (dev->xfer_shift == ATA_SHIFT_PIO)
dev->flags |= ATA_DFLAG_PIO;
err_mask = ata_dev_set_xfermode(dev);
if (nosetxfer && ap->flags & ATA_FLAG_SATA && ata_id_is_sata(dev->id))
dev_err_whine = " (SET_XFERMODE skipped)";
else {
if (nosetxfer)
ata_dev_printk(dev, KERN_WARNING,
"NOSETXFER but PATA detected - can't "
"skip SETXFER, might malfunction\n");
err_mask = ata_dev_set_xfermode(dev);
}
if (err_mask & ~AC_ERR_DEV)
goto fail;
@ -4297,6 +4307,12 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
/* Devices which aren't very happy with higher link speeds */
{ "WD My Book", NULL, ATA_HORKAGE_1_5_GBPS, },
/*
* Devices which choke on SETXFER. Applies only if both the
* device and controller are SATA.
*/
{ "PIONEER DVD-RW DVRTD08", "1.00", ATA_HORKAGE_NOSETXFER },
/* End Marker */
{ }
};

1
include/linux/libata.h
View File

@ -385,6 +385,7 @@ enum {
not multiple of 16 bytes */
ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firmware update warning */
ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */
ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */
/* DMA mask for user DMA control: User visible values; DO NOT
renumber */