John Sigler wrote:
What do the warnings mean? :-)
That your drive does not support set transfer mode/speed command at
Which is perfectly valid in the original ATA spec.
all, or that value which kernel tried is not supported by the drive...
They just should skip programming the drive in this case, and set its
default speed to the chipset.
I would guess that some contractor wrote firmware for device for PQI
in one day for $100, and before that somebody else designed ATA-SD
bridge for PQI for another $100.
Hehe.
I guess that these two printk()s happen because drive claims to
support pio0,1,2 - so Linux tries pio2, drive refuses, Linux tries
Which it shuldn't do since the drive only indicates its default mode (modes
0-2 aren't included in the PIO support mask -- there's only 3 and 4 there).
pio1, drive refuses, and finally as pio0 is default, that one gets
used. Which is more or less confirmed by having no '*' sign in front
of any pio - with "real" drives you should see '*' in front of one of
listed dma/pio modes.
You should ask reseller how they can ship drive which does not conform
to any ATA standard...
Doesn't it conform to ATA? :-)
I took drivers/ide/pci/via82cxxx.c and sprinkled ENTER/EXIT printk's.
http://lxr.linux.no/source/drivers/ide/pci/via82cxxx.c
via82cxxx_tune_drive() and via82cxxx_ide_dma_check() both call
via_set_drive() which calls ide_config_drive_speed().
http://lxr.linux.no/source/drivers/ide/ide-iops.c#L769
if (error)
{
(void) ide_dump_status(drive, "set_drive_speed_status", stat);
printk(KERN_INFO "EXIT %s error\n", __func__);
return error;
}
Does someone know why error is not set to 0?
Why it *does* set to one, you wanted to ask? Because it *does* get set
after a loop above exits.
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: IDE controller at PCI slot 0000:00:07.1
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt82c686b (rev 40) IDE UDMA100 controller on pci0000:00:07.1
ide0: BM-DMA at 0xd000-0xd007, BIOS settings: hda:pio, hdb:pio
ide1: BM-DMA at 0xd008-0xd00f, BIOS settings: hdc:pio, hdd:pio
Probing IDE interface ide0...
hda: PQI IDE DiskOnModule, ATA DISK drive
ENTER via82cxxx_tune_drive
ENTER via_set_drive
ENTER ide_config_drive_speed
hda: set_drive_speed_status: status=0x51 { DriveReady SeekComplete Error }
hda: set_drive_speed_status: error=0x04 { DriveStatusError }
EXIT ide_config_drive_speed error
ENTER via_set_speed
EXIT via_set_speed
EXIT via_set_drive
EXIT via82cxxx_tune_drive pio == 255
255 is PIO auto-tuning request.
ENTER via82cxxx_ide_dma_check
ENTER via_set_drive
ENTER ide_config_drive_speed
hda: set_drive_speed_status: status=0x51 { DriveReady SeekComplete Error }
hda: set_drive_speed_status: error=0x04 { DriveStatusError }
MBR, Sergei
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