Distro: SuSE 9.2
Kernel: 2.6.8 from distro; also 2.6.12-rc1
Hardware: Dell Inspiron 6000d, Pentium-M, chipset 915PM
(ICH6M, 82801FBM), PCI ID of SATA controller: 8086:2653
Discs: FUJITSU MHT2040A; SATA, UDMA/100
Toshiba-Samsung CDRW/DVD SN-324S 24X; ATAPI, UDMA/33
The initial symptom was that the CD was very slow (4X) and had extreme
errors when burning (error-free on Windows). This was blamed on no DMA.
In the distro's kernel ide_generic is compiled in. It bypasses ide0
(SATA disc) but serves ide1 (ATAPI CD), of course without DMA. I tried
a kernel parameter of "ide1=none", which is effective: ata_piix serves
ata2 and configures its only device for udma/33. However, the CD itself
is not registered; probing the "scsi bus" uncovers nothing on that bus.
/sys/block has subdirs for loop devices, ramdiscs, and sda (SATA disc);
nothing else.
No relief was obtained through numerous combinations of modules in the
kernel, in the initrd or loaded later, in a variety of orders. For
example, the following list of modules (in order) in the initrd had the
same result as described above: scsi_mod sd_mod cdrom sr_mod libata
ata_piix ide_cd jbd ext3. This was with "ide1=none". Combinations were
also tried with piix (the IDE module, and without "ide1=none") without
making the CD appear. Am I right that piix can't deal with even the
channel with the PATA device, causing it to serve nothing even if
ata_piix is maneuvered out of the way?
As it stands now, I need to compile ata_piix and friends into the kernel
to make software suspend work, but if I want to install any other
software I'll have to read the installation media on a different
machine. Any suggestions for making both work at the same time would be
appreciated.
James F. Carter Voice 310 825 2897 FAX 310 206 6673
UCLA-Mathnet; 6115 MSA; 405 Hilgard Ave.; Los Angeles, CA, USA 90095-1555
Email: [EMAIL PROTECTED] http://www.math.ucla.edu/~jimc (q.v. for PGP key)
Shortened dmesg output from 2.6.12-rc1 with ata_piix and dependencies
compiled into the kernel, but no ide whatsoever. This sequence is
shown because there are lots of debug messages.
<7>device class 'scsi_host': registering
<7>bus type 'scsi' registered
<7>device class 'scsi_device': registering
<5>SCSI subsystem initialized
<7>bus scsi: add driver sd
<7>libata version 1.10 loaded.
<7>bus pci: add driver ata_piix
<7>ata_piix version 1.03
<6>ACPI: PCI interrupt 0000:00:1f.2[B] -> GSI 17 (level, low) -> IRQ 193
<7>PCI: Setting latency timer of device 0000:00:1f.2 to 64
<6>ata1: SATA max UDMA/133 cmd 0x1F0 ctl 0x3F6 bmdma 0xBFA0 irq 14
<7>ata1: dev 0 cfg 49:2b00 82:346b 83:5b29 84:4003 85:3469 86:1a09 87:4003 88:20
3f
<6>ata1: dev 0 ATA, max UDMA/100, 78140160 sectors:
<6>ata1: dev 0 configured for UDMA/100
<6>scsi0 : ata_piix
<7>DEV: registering device: ID = 'host0'
<7>PM: Adding info for No Bus:host0
<7>CLASS: registering class device: ID = 'host0'
<7>class_hotplug - name = host0
<7>DEV: registering device: ID = 'target0:0:0'
<7>PM: Adding info for No Bus:target0:0:0
<5> Vendor: ATA Model: FUJITSU MHT2040A Rev: 006C
<5> Type: Direct-Access ANSI SCSI revision: 05
<7>DEV: registering device: ID = '0:0:0:0'
<7>PM: Adding info for scsi:0:0:0:0
<7>bus scsi: add device 0:0:0:0
<5>SCSI device sda: 78140160 512-byte hdwr sectors (40008 MB)
<5>SCSI device sda: drive cache: write back
<5>SCSI device sda: 78140160 512-byte hdwr sectors (40008 MB)
<5>SCSI device sda: drive cache: write back
<6> sda: sda1 sda2 sda3 sda4 < sda5 sda6 >
<5>Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
<7>bound device '0:0:0:0' to driver 'sd'
<7>CLASS: registering class device: ID = '0:0:0:0'
<7>class_hotplug - name = 0:0:0:0
<7>DEV: registering device: ID = 'target0:0:1'
<7>PM: Adding info for No Bus:target0:0:1
<7>PM: Removing info for No Bus:target0:0:1
-- similarly up to target0:1:15
<6>ata2: SATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0xBFA8 irq 15
<7>ata2: dev 0 cfg 49:0f00 82:0000 83:0000 84:0000 85:0000 86:0000 87:0000 88:04
07
<6>ata2: dev 0 ATAPI, max UDMA/33
<6>ata2: dev 0 configured for UDMA/33
<6>scsi1 : ata_piix
<7>DEV: registering device: ID = 'host1'
<7>PM: Adding info for No Bus:host1
<7>CLASS: registering class device: ID = 'host1'
<7>class_hotplug - name = host1
<7>DEV: registering device: ID = 'target1:0:0'
<7>PM: Adding info for No Bus:target1:0:0
<7>PM: Removing info for No Bus:target1:0:0
-- note, probe missed the device.
-- similarly up to target1:1:15
Analogous dmesg output from 2.6.8 with ata_piix and dependencies
(scsi_mod sd_mod libata) plus ide_core and piix (ide module) compiled
into the kernel. Note that IDE is initialized first but claims no
interfaces.
<6>Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
<6>ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
<7>libata version 1.02 loaded.
<7>ata_piix version 1.02
<6>ACPI: PCI interrupt 0000:00:1f.2[B] -> GSI 7 (level, low) -> IRQ 7
<7>PCI: Setting latency timer of device 0000:00:1f.2 to 64
<6>ata1: SATA max UDMA/133 cmd 0x1F0 ctl 0x3F6 bmdma 0xBFA0 irq 14
<7>ata1: dev 0 cfg 49:2b00 82:346b 83:5b29 84:4003 85:3469 86:1a09 87:4003 88:20
3f
<6>ata1: dev 0 ATA, max UDMA/100, 78140160 sectors:
<6>ata1: dev 0 configured for UDMA/100
<6>scsi0 : ata_piix
<5> Vendor: ATA Model: FUJITSU MHT2040A Rev: 006C
<5> Type: Direct-Access ANSI SCSI revision: 05
<6>ata2: SATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0xBFA8 irq 15
<7>ata2: dev 0 cfg 49:0f00 82:0000 83:0000 84:0000 85:0000 86:0000 87:0000 88:04
07
<6>ata2: dev 0 ATAPI, max UDMA/33
<6>ata2: dev 0 configured for UDMA/33
<6>scsi1 : ata_piix
<5>SCSI device sda: 78140160 512-byte hdwr sectors (40008 MB)
<5>SCSI device sda: drive cache: write back
<6> sda: sda1 sda2 sda3 sda4 < sda5 sda6 >
<5>Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
Subsequently these modules were loaded: cdrom ide_cd sr_mod st sg
(plus NICs, iptables, USB, etc etc). The CD was not recognized nor
registered. /sys/block shows loop[0-7] ram[0-15] and sda. In another
try with ide_cd and cdrom compiled into the kernel, the result was
the same.
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