On 03/28/2010 11:48 AM, Stan Hoeppner wrote:
David Milburn put forth on 3/25/2010 4:52 PM:
On Thu, Mar 25, 2010 at 04:19:16AM -0500, Stan Hoeppner wrote:
Tejun Heo put forth on 3/24/2010 7:38 PM:
Hello,
On 03/16/2010 09:26 AM, Stan Hoeppner wrote:
ata2.00: ATAPI: Pioneer CD-ROM ATAPI Model DR-A24X 0102, E1.02, max MWDMA2
ata2.00: failed to set xfermode (err_mask=0x100)
TCP cubic registered
NET: Registered protocol family 17
Using IPI Shortcut mode
rtc_cmos rtc_cmos: setting system clock to 2010-03-10 20:53:54 UTC (1268254434)
ata2.00: failed to set xfermode (err_mask=0x100)
ata2.00: limiting speed to MWDMA2:PIO3
ata2.00: failed to set xfermode (err_mask=0x100)
AC_ERR_OTHER on SETXFER, that's rare. Maybe the drive needs
ATA_HORKAGE_NOSETXFER? Can you please post boot log with ide driver?
Hello Tejun,
Here is the relevant dmesg output for my kernel with the PIIX IDE driver:
Linux version 2.6.32.9 (root@greer) (gcc version 4.3.2 (Debian 4.3.2-1.1) )
#1 SMP Wed Mar 17 20:21:58 CDT 2010
...
Uniform Multi-Platform E-IDE driver
piix 0000:00:07.1: IDE controller (0x8086:0x7111 rev 0x01)
piix 0000:00:07.1: IDE port disabled
piix 0000:00:07.1: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xf008-0xf00f
Probing IDE interface ide0...
hda: Pioneer CD-ROM ATAPI Model DR-A24X 0102, ATAPI CD/DVD-ROM drive
hda: host max PIO4 wanted PIO255(auto-tune) selected PIO4
hda: MWDMA2 mode selected
ide0 at 0x170-0x177,0x376 on irq 15
ide-cd driver 5.00
ide-cd: hda: ATAPI 20X CD-ROM drive, 128kB Cache
Uniform CD-ROM driver Revision: 3.20
I must admit the CD-ROM drive is rather old, a late 90's model slot loading
Pioneer drive, but it works fine with the PIIX IDE driver. If it is needed
for success under libata, where would I set ATA_HORKAGE_NOSETXFER?
Hello,
If you are going to try to skip SETXFER, I think you will need an entry in
ata_device_blacklist, something like this.
drivers/ata/libata-core.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 4a28420..8dfcf85 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4388,6 +4388,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
* device and controller are SATA.
*/
{ "PIONEER DVD-RW DVRTD08", "1.00", ATA_HORKAGE_NOSETXFER },
+ { "Pioneer CD-ROM ATAPI Model DR-A24X 0102", "E1.02", ATA_HORKAGE_NOSETXFER },
/* End Marker */
{ }
I tried this but it doesn't work:
ata_piix 0000:00:07.1: version 2.13
scsi0 : ata_piix
scsi1 : ata_piix
ata1: PATA max UDMA/33 cmd 0x1f0 ctl 0x3f6 bmdma 0xf000 irq 14
ata2: PATA max UDMA/33 cmd 0x170 ctl 0x376 bmdma 0xf008 irq 15
ata1: port disabled. ignoring.
...
ata2.00: ATAPI: Pioneer CD-ROM ATAPI Model DR-A24X 0102, E1.02, max MWDMA2
ata2.00: NOSETXFER but PATA detected - can't skip SETXFER, might malfunction
Yeah, NOSETXFER doesn't take effect on PATA drives. It could, but it
would assume that the BIOS has set the right mode which seems rather
dangerous.
Shouldn't we be getting some error handling output from the command failing?
ata2.00: failed to set xfermode (err_mask=0x100)
...
ata2.00: NOSETXFER but PATA detected - can't skip SETXFER, might malfunction
ata2.00: failed to set xfermode (err_mask=0x100)
ata2.00: limiting speed to MWDMA2:PIO3
ata2.00: NOSETXFER but PATA detected - can't skip SETXFER, might malfunction
ata2.00: failed to set xfermode (err_mask=0x100)
ata2.00: disabled
The old IDE subsystem and piix.c combo set the xfer mode on this CD-ROM
drive just fine, and the drive works fine. Both this IDE chip and the
CD-ROM drive are well over 10 years old, from around 1998/99 time frame. I
would think their behavior would be well understood by now. The libata and
ata_piix combo seem to have a problem here. I guess that's why they are
labeled 'experimental' in menuconfig. Let me know what else I can do to
They're not anymore, actually.
help this along. IIRC, the goal is to completely eliminate the old IDE
subsystem in favor of libata. I'm guessing that can't happen until issues
such as this case are resolved.
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