Re: libata and PATA devices

[Erik Slagter <erik@slagter.name>]

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On Thu, 2005-08-11 at 16:21 -0400, Jeff Garzik wrote:
> Erik Slagter wrote:

> Your patch was wrong because the SATA device should always be claimed by 
> libata.
> 
> The system is thus:
> 
> 1) drivers/pci/quirks.c reserves SATA ports (only!) for libata
> 2) Legacy IDE driver claims the unreserved PATA port
> 3) libata loads and uses the ports reserved in #1
> 
> This requires a specific kernel configuration:
> (a) CONFIG_IDE_GENERIC be set, and
> (b) IDE driver is built into the kernel.
> 
> This also requires that your SATA device is listed in drivers/pci/quirks.c.
> 
> Both (a) and (b) are kernel configuration issues.  I never saw anything 
> in any email thread indicating that (a) and (b) were verified and 
> eliminated as problem sources.

> To be more clear:

> The legacy ISA IDE driver, not the PIIX IDE driver, must claim the
> PATA port.

Okay, here it comes.

hardware: Dell Inspiron 9300 with ICH6M and Fujitsu PATA harddisk + PATA
dvd driver
kernel: 2.6.12.3 plain vanilla
config: generic ide, no ide piix support, no pci ide support whatsoever,
libata support, libata_piix support

result: the pata harddisk is recognised by libata_piix and
assigned /dev/sda, the dvd drive is found by the generic ide driver.
(dmesg output attached)

Alternative:

config: generic ide, no ide piix support, no pci ide support whatsoever,
libata support, no libata_piix support

result: not bootable because no root disk whatsoever is found
(no /dev/sda nor /dev/hda). The dvd driver is found by the generic ide
driver.

Looks like the practise does not match your statement.

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Linux version 2.6.12.3test1 (erik@skylla) (gcc version 4.0.1 20050727 (Red Hat 4.0.1-5)) #6 Fri Aug 12 17:54:49 CEST 2005
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
 BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved)
 BIOS-e820: 0000000000100000 - 000000003ffda000 (usable)
 BIOS-e820: 000000003ffda000 - 0000000040000000 (reserved)
 BIOS-e820: 00000000e0000000 - 00000000f0007000 (reserved)
 BIOS-e820: 00000000f0008000 - 00000000f000c000 (reserved)
 BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
 BIOS-e820: 00000000fed20000 - 00000000fee10000 (reserved)
 BIOS-e820: 00000000ffb00000 - 0000000100000000 (reserved)
127MB HIGHMEM available.
896MB LOWMEM available.
NX (Execute Disable) protection: active
On node 0 totalpages: 262106
  DMA zone: 4096 pages, LIFO batch:1
  Normal zone: 225280 pages, LIFO batch:31
  HighMem zone: 32730 pages, LIFO batch:15
DMI 2.3 present.
ACPI: RSDP (v000 DELL                                  ) @ 0x000fc9b0
ACPI: RSDT (v001 DELL    CPi R   0x27d50217 ASL  0x00000061) @ 0x3ffda7d3
ACPI: FADT (v001 DELL    CPi R   0x27d50217 ASL  0x00000061) @ 0x3ffdb400
ACPI: MADT (v001 DELL    CPi R   0x27d50217 ASL  0x00000047) @ 0x3ffdbc00
ACPI: MCFG (v016 DELL    CPi R   0x27d50217 ASL  0x00000061) @ 0x3ffdbbc0
ACPI: BOOT (v001 DELL    CPi R   0x27d50217 ASL  0x00000061) @ 0x3ffdb7c0
ACPI: SSDT (v001  PmRef  Cpu0Ist 0x00003000 INTL 0x20030522) @ 0x3ffdabe6
ACPI: SSDT (v001  PmRef  Cpu0Cst 0x00003001 INTL 0x20030522) @ 0x3ffdaa0e
ACPI: SSDT (v001  PmRef    CpuPm 0x00003000 INTL 0x20030522) @ 0x3ffda813
ACPI: DSDT (v001 INT430 SYSFexxx 0x00001001 MSFT 0x0100000e) @ 0x00000000
ACPI: PM-Timer IO Port: 0x1008
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
Processor #0 6:13 APIC version 20
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] disabled)
ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 1, version 32, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: IRQ0 used by override.
ACPI: IRQ2 used by override.
ACPI: IRQ9 used by override.
Enabling APIC mode:  Flat.  Using 1 I/O APICs
Using ACPI (MADT) for SMP configuration information
Allocating PCI resources starting at 40000000 (gap: 40000000:a0000000)
Built 1 zonelists
Kernel command line: ro resume=/dev/hda4 root=/dev/hda2 nmi_watchdog=2 netconsole=@172.31.4.2/eth0,514@172.31.1.1/ root=/dev/sda2 init=/bin/sh
netconsole: local port 6665
netconsole: local IP 172.31.4.2
netconsole: interface eth0
netconsole: remote port 514
netconsole: remote IP 172.31.1.1
netconsole: remote ethernet address ff:ff:ff:ff:ff:ff
mapped APIC to ffffd000 (fee00000)
mapped IOAPIC to ffffc000 (fec00000)
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 65536 bytes)
Detected 2128.592 MHz processor.
Using pmtmr for high-res timesource
Console: colour VGA+ 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 1034108k/1048424k available (2818k kernel code, 13500k reserved, 1214k data, 176k init, 130920k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay loop... 4194.30 BogoMIPS (lpj=2097152)
Mount-cache hash table entries: 512
CPU: After generic identify, caps: afe9fbff 00100000 00000000 00000000 00000180 00000000 00000000
CPU: After vendor identify, caps: afe9fbff 00100000 00000000 00000000 00000180 00000000 00000000
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 2048K
CPU: After all inits, caps: afe9fbff 00100000 00000000 00000040 00000180 00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: Intel(R) Pentium(R) M processor 2.13GHz stepping 08
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
ENABLING IO-APIC IRQs
..TIMER: vector=0x31 pin1=2 pin2=-1
NET: Registered protocol family 16
PCI: PCI BIOS revision 2.10 entry at 0xfbaae, last bus=4
PCI: Using MMCONFIG
mtrr: v2.0 (20020519)
ACPI: Subsystem revision 20050309
ACPI: Interpreter enabled
ACPI: Using IOAPIC for interrupt routing
ACPI: PCI Root Bridge [PCI0] (0000:00)
PCI: Probing PCI hardware (bus 00)
PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.2
Boot video device is 0000:01:00.0
PCI: Transparent bridge - 0000:00:1e.0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Link [LNKA] (IRQs 9 10 *11)
ACPI: PCI Interrupt Link [LNKB] (IRQs 5 7) *10
ACPI: PCI Interrupt Link [LNKC] (IRQs *9 10 11)
ACPI: PCI Interrupt Link [LNKD] (IRQs 5 *7 9 10 11)
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 9 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 9 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 9 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.AGP_._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCIE._PRT]
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI init
pnp: PnP ACPI: found 10 devices
i8k: not running on a Dell system
i8k: vendor=Dell Inc., model=Inspiron 9300, version=A02
i8k: unable to get SMM Dell signature
i8k: unable to get SMM BIOS version
SCSI subsystem initialized
Linux Kernel Card Services
  options:  [pci] [cardbus] [pm]
PCI: Using ACPI for IRQ routing
PCI: If a device doesn't work, try "pci=routeirq".  If it helps, post a report
Bluetooth: Core ver 2.7
NET: Registered protocol family 31
Bluetooth: HCI device and connection manager initialized
Bluetooth: HCI socket layer initialized
pnp: 00:01: ioport range 0x4d0-0x4d1 has been reserved
pnp: 00:01: ioport range 0x1000-0x1005 could not be reserved
pnp: 00:01: ioport range 0x1008-0x100f could not be reserved
pnp: 00:02: ioport range 0xf400-0xf4fe has been reserved
pnp: 00:02: ioport range 0x1006-0x1007 has been reserved
pnp: 00:02: ioport range 0x100a-0x1059 could not be reserved
pnp: 00:02: ioport range 0x1060-0x107f has been reserved
pnp: 00:02: ioport range 0x1080-0x10bf has been reserved
pnp: 00:02: ioport range 0x10c0-0x10df has been reserved
pnp: 00:07: ioport range 0x900-0x90f has been reserved
pnp: 00:07: ioport range 0x910-0x91f has been reserved
pnp: 00:07: ioport range 0x920-0x92f has been reserved
pnp: 00:07: ioport range 0x930-0x93f has been reserved
pnp: 00:07: ioport range 0x940-0x97f has been reserved
Simple Boot Flag at 0x79 set to 0x1
Machine check exception polling timer started.
IA-32 Microcode Update Driver: v1.14 <tigran@veritas.com>
highmem bounce pool size: 64 pages
Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
Initializing Cryptographic API
ACPI: PCI Interrupt 0000:00:01.0[A] -> GSI 16 (level, low) -> IRQ 169
PCI: Setting latency timer of device 0000:00:01.0 to 64
assign_interrupt_mode Found MSI capability
Allocate Port Service[pcie00]
Allocate Port Service[pcie03]
ACPI: AC Adapter [AC] (on-line)
ACPI: Battery Slot [BAT0] (battery present)
ACPI: Lid Switch [LID]
ACPI: Power Button (CM) [PBTN]
ACPI: Sleep Button (CM) [SBTN]
ACPI: Video Device [VID] (multi-head: yes  rom: no  post: no)
ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3] C4[C3])
ACPI: Processor [CPU0] (supports 8 throttling states)
ACPI: Thermal Zone [THM] (52 C)
Real Time Clock Driver v1.12
hw_random: cannot enable RNG, aborting
PNP: PS/2 Controller [PNP0303:KBC,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
serio: i8042 AUX port at 0x60,0x64 irq 12
serio: i8042 KBD port at 0x60,0x64 irq 1
io scheduler noop registered
io scheduler deadline registered
loop: loaded (max 8 devices)
pktcdvd: v0.2.0a 2004-07-14 Jens Axboe (axboe@suse.de) and petero2@telia.com
PPP generic driver version 2.4.2
PPP Deflate Compression module registered
PPP BSD Compression module registered
netconsole: eth0 doesn't exist, aborting.
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
ide0: I/O resource 0x1F0-0x1F7 not free.
ide0: ports already in use, skipping probe
Probing IDE interface ide1...
hdc: SONY DVD+/-RW DW-D56A, ATAPI CD/DVD-ROM drive
Probing IDE interface ide2...
Probing IDE interface ide3...
Probing IDE interface ide4...
Probing IDE interface ide5...
ide1 at 0x170-0x177,0x376 on irq 15
hdc: ATAPI 24X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache
Uniform CD-ROM driver Revision: 3.20
libata version 1.11 loaded.
ahci version 1.00
ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 17 (level, low) -> IRQ 193
ahci: probe of 0000:00:1f.2 failed with error -12
ata_piix version 1.03
ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 17 (level, low) -> IRQ 193
ata: 0x170 IDE port busy
PCI: Setting latency timer of device 0000:00:1f.2 to 64
ata1: SATA max UDMA/133 cmd 0x1F0 ctl 0x3F6 bmdma 0xBFA0 irq 14
ata1: dev 0 cfg 49:2b00 82:346b 83:5b29 84:4003 85:3469 86:1a09 87:4003 88:203f
ata1: dev 0 ATA, max UDMA/100, 156301488 sectors:
ata1: dev 0 configured for UDMA/100
scsi0 : ata_piix
  Vendor: ATA       Model: FUJITSU MHT2080A  Rev: 006C
  Type:   Direct-Access                      ANSI SCSI revision: 05
SCSI device sda: 156301488 512-byte hdwr sectors (80026 MB)
SCSI device sda: drive cache: write back
SCSI device sda: 156301488 512-byte hdwr sectors (80026 MB)
SCSI device sda: drive cache: write back
 sda: sda1 sda2 sda3 sda4
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0,  type 0
ohci1394: $Rev: 1250 $ Ben Collins <bcollins@debian.org>
ACPI: PCI Interrupt 0000:03:01.1[B] -> GSI 18 (level, low) -> IRQ 201
ohci1394: fw-host0: OHCI-1394 1.1 (PCI): IRQ=[201]  MMIO=[dfcfc800-dfcfcfff]  Max Packet=[2048]
video1394: Installed video1394 module
ieee1394: raw1394: /dev/raw1394 device initialized
sbp2: $Rev: 1219 $ Ben Collins <bcollins@debian.org>
ieee1394: Loaded AMDTP driver
ieee1394: Loaded CMP driver
PCI: Enabling device 0000:03:01.0 (0000 -> 0002)
ACPI: PCI Interrupt 0000:03:01.0[A] -> GSI 19 (level, low) -> IRQ 209
Yenta: CardBus bridge found at 0000:03:01.0 [1028:0189]
Yenta: ISA IRQ mask 0x04b8, PCI irq 209
Socket status: 30000006
mice: PS/2 mouse device common for all mice
Advanced Linux Sound Architecture Driver Version 1.0.9rc2  (Thu Mar 24 10:33:39 2005 UTC).
ACPI: PCI Interrupt 0000:00:1e.2[A] -> GSI 16 (level, low) -> IRQ 169
PCI: Setting latency timer of device 0000:00:1e.2 to 64
input: AT Translated Set 2 keyboard on isa0060/serio0
alps.c: Enabling hardware tapping
input: PS/2 Mouse on isa0060/serio1
input: AlpsPS/2 ALPS GlidePoint on isa0060/serio1
intel8x0_measure_ac97_clock: measured 49470 usecs
intel8x0: clocking to 48000
ACPI: PCI Interrupt 0000:00:1e.3[B] -> GSI 17 (level, low) -> IRQ 193
PCI: Setting latency timer of device 0000:00:1e.3 to 64
ieee1394: Host added: ID:BUS[0-00:1023]  GUID[324fc0002e7d4c30]
MC'97 1 converters and GPIO not ready (0xff00)
ALSA device list:
  #0: Intel ICH6 with STAC9750,51 at 0xdffffe00, irq 169
  #1: Intel ICH Modem at 0xee00, irq 193
NET: Registered protocol family 2
IP: routing cache hash table of 8192 buckets, 64Kbytes
TCP established hash table entries: 262144 (order: 9, 2097152 bytes)
TCP bind hash table entries: 65536 (order: 6, 262144 bytes)
TCP: Hash tables configured (established 262144 bind 65536)
IPv4 over IPv4 tunneling driver
GRE over IPv4 tunneling driver
NET: Registered protocol family 1
NET: Registered protocol family 10
IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
Bluetooth: L2CAP ver 2.7
Bluetooth: L2CAP socket layer initialized
Bluetooth: SCO (Voice Link) ver 0.4
Bluetooth: SCO socket layer initialized
Bluetooth: RFCOMM ver 1.5
Bluetooth: RFCOMM socket layer initialized
Bluetooth: RFCOMM TTY layer initialized
Bluetooth: BNEP (Ethernet Emulation) ver 1.2
Bluetooth: BNEP filters: protocol multicast
Bluetooth: HIDP (Human Interface Emulation) ver 1.1
802.1Q VLAN Support v1.8 Ben Greear <greearb@candelatech.com>
All bugs added by David S. Miller <davem@redhat.com>
acpi-cpufreq: CPU0 - ACPI performance management activated.
Testing NMI watchdog ... OK.
ACPI wakeup devices: 
 LID PBTN PCI0 USB0 USB1 USB2 USB4 USB3 MODM PCIE 
ACPI: (supports S0 S3 S4 S4bios S5)
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
Freeing unused kernel memory: 176k freed
EXT3-fs warning: maximal mount count reached, running e2fsck is recommended
EXT3 FS on sda2, internal journal

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