2.6.10-rc1 & ahci & IHC6R & 925X & raid1

Hi,
Linux running on my new Dell-8400 computer does not recognize
the SATA disks [No problem with the PATA drives].
The attached log is output from 'dmesg' with '/proc/modules' and 'ps -Hel' appended.

This machine has 4 disks, configured in the Intel Raid configuration BIOS as 3 devices, with disks on ports 0 & 2 being a raid1 pair, half of disks 1 & 3 also a raid1 device and the rest a raid0 device. The raid signatures on disk 3 have been removed [for testing].

Ths "SATA Operation" setting in BIOS is set to "RAID Autodetect / AHCI".

I have set symbols ATA_DEBUG and ATA_VERBOSE_DEBUG to 1 for more output and built a new set of modules.

I have configured netbooting [PXE] for this machine and I can boot the kernel with an initrd. The only thing it currently does is loading usb modules for console, usb keyboard, network and starting a shell.

Giving the command "modprobe ahci" hangs the machine.

Using "modprobe ahci &" instead and investigating the state at that time leads me to suspect ata_dev_identify() waits for an interrupt that is not occuring.

The attached '/proc/modules' and 'ps -Hel' are from this environment.

Please, can someone help me debugging this further, what other info would be usefull, are there other experiments that can provide new insights into this problem.....

Regards,
----------------------------------------------------------------  -o)
Matthijs Melchior                                       Maarssen  /\\
[email protected]                                  Netherlands _\_v
---------------------------------------------------------------- ----

Linux version 2.6.10-rc1 (mmelchio@p2pc) (gcc version 3.2.2) #1 SMP Sat Oct 23 06:23:17 CEST 2004
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 00000000000a0000 (usable)
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000003fe8cc00 (usable)
BIOS-e820: 000000003fe8cc00 - 000000003fe8ec00 (ACPI NVS)
BIOS-e820: 000000003fe8ec00 - 000000003fe90c00 (ACPI data)
BIOS-e820: 000000003fe90c00 - 0000000040000000 (reserved)
BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved)
BIOS-e820: 00000000fec00000 - 00000000fed00400 (reserved)
BIOS-e820: 00000000fed20000 - 00000000feda0000 (reserved)
BIOS-e820: 00000000fee00000 - 00000000fef00000 (reserved)
BIOS-e820: 00000000ffb00000 - 0000000100000000 (reserved)
126MB HIGHMEM available.
896MB LOWMEM available.
found SMP MP-table at 000fe710
On node 0 totalpages: 261772
DMA zone: 4096 pages, LIFO batch:1
Normal zone: 225280 pages, LIFO batch:16
HighMem zone: 32396 pages, LIFO batch:7
DMI 2.3 present.
ACPI: RSDP (v000 DELL ) @ 0x000febf0
ACPI: RSDT (v001 DELL 8400 0x00000007 ASL 0x00000061) @ 0x000fccbc
ACPI: FADT (v001 DELL 8400 0x00000007 ASL 0x00000061) @ 0x000fccf8
ACPI: SSDT (v001 DELL st_ex 0x00001000 MSFT 0x0100000d) @ 0xfffc9180
ACPI: MADT (v001 DELL 8400 0x00000007 ASL 0x00000061) @ 0x000fcd6c
ACPI: BOOT (v001 DELL 8400 0x00000007 ASL 0x00000061) @ 0x000fcdde
ACPI: MCFG (v001 DELL 8400 0x00000007 ASL 0x00000061) @ 0x000fce06
ACPI: HPET (v001 DELL 8400 0x00000007 ASL 0x00000061) @ 0x000fce44
ACPI: DSDT (v001 DELL dt_ex 0x00001000 MSFT 0x0100000d) @ 0x00000000
ACPI: PM-Timer IO Port: 0x808
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
Processor #0 15:3 APIC version 20
ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled)
Processor #1 15:3 APIC version 20
ACPI: LAPIC (acpi_id[0x03] lapic_id[0x01] disabled)
ACPI: LAPIC (acpi_id[0x04] lapic_id[0x07] disabled)
ACPI: LAPIC_NMI (acpi_id[0xff] high level lint[0x1])
ACPI: IOAPIC (id[0x08] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 8, 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
ACPI: HPET id: 0x8086a201 base: 0xfed00000
Using ACPI (MADT) for SMP configuration information
Built 1 zonelists
Kernel command line: ramdisk_size=16384 initrd=initrd root=/dev/ram0 vga=031B BOOT_IMAGE=linux
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 65536 bytes)
Console: colour dummy device 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 1029368k/1047088k available (1683k kernel code, 17116k reserved, 689k data, 188k init, 129584k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
hpet0: at MMIO 0xf8800000, IRQs 2, 8, 0
hpet0: 0ns tick, 3 64-bit timers
Using HPET for base-timer
Using HPET for gettimeofday
Detected 2992.818 MHz processor.
Using hpet for high-res timesource
Calibrating delay loop... 5931.00 BogoMIPS (lpj=2965504)
Security Framework v1.0.0 initialized
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
CPU: After generic identify, caps: bfebfbff 00000000 00000000 00000000
CPU: After vendor identify, caps: bfebfbff 00000000 00000000 00000000
monitor/mwait feature present.
using mwait in idle threads.
CPU: Trace cache: 12K uops, L1 D cache: 16K
CPU: L2 cache: 1024K
CPU: Physical Processor ID: 0
CPU: After all inits, caps: bfebfbff 00000000 00000000 00000080
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU0: Intel P4/Xeon Extended MCE MSRs (12) available
CPU0: Thermal monitoring enabled
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
CPU0: Intel(R) Pentium(R) 4 CPU 3.00GHz stepping 04
per-CPU timeslice cutoff: 2925.83 usecs.
task migration cache decay timeout: 3 msecs.
Booting processor 1/1 eip 3000
Initializing CPU#1
Calibrating delay loop... 5980.16 BogoMIPS (lpj=2990080)
CPU: After generic identify, caps: bfebfbff 00000000 00000000 00000000
CPU: After vendor identify, caps: bfebfbff 00000000 00000000 00000000
monitor/mwait feature present.
CPU: Trace cache: 12K uops, L1 D cache: 16K
CPU: L2 cache: 1024K
CPU: Physical Processor ID: 0
CPU: After all inits, caps: bfebfbff 00000000 00000000 00000080
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#1.
CPU1: Intel P4/Xeon Extended MCE MSRs (12) available
CPU1: Thermal monitoring enabled
CPU1: Intel(R) Pentium(R) 4 CPU 3.00GHz stepping 04
Total of 2 processors activated (11911.16 BogoMIPS).
ENABLING IO-APIC IRQs
..TIMER: vector=0x31 pin1=2 pin2=-1
checking TSC synchronization across 2 CPUs: passed.
Brought up 2 CPUs
CPU0:
domain 0: span 03
groups: 01 02
domain 1: span 03
groups: 03
CPU1:
domain 0: span 03
groups: 02 01
domain 1: span 03
groups: 03
checking if image is initramfs...it isn't (ungzip failed); looks like an initrd
Freeing initrd memory: 4984k freed
NET: Registered protocol family 16
PCI: PCI BIOS revision 2.10 entry at 0xfb768, last bus=4
PCI: Using MMCONFIG
mtrr: v2.0 (20020519)
ACPI: Subsystem revision 20040816
ACPI: Interpreter enabled
ACPI: Using IOAPIC for interrupt routing
ACPI: PCI Root Bridge [PCI0] (00:00)
PCI: Probing PCI hardware (bus 00)
PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1
PCI: Transparent bridge - 0000:00:1e.0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCI1._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCI2._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCI3._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCI4._PRT]
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 9 10 *11 12 15)
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 9 *10 11 12 15)
ACPI: PCI Interrupt Link [LNKC] (IRQs *3 4 5 6 7 9 10 11 12 15)
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 9 10 11 12 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 *5 6 7 9 10 11 12 15)
ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 *9 10 11 12 15)
ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 *5 6 7 9 10 11 12 15)
ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 9 *10 11 12 15)
Linux Plug and Play Support v0.97 (c) Adam Belay
PnPBIOS: Scanning system for PnP BIOS support...
PnPBIOS: Found PnP BIOS installation structure at 0xc00fe2d0
PnPBIOS: PnP BIOS version 1.0, entry 0xf0000:0xe2f4, dseg 0x40
PnPBIOS: 19 nodes reported by PnP BIOS; 19 recorded by driver
PCI: Using ACPI for IRQ routing
ACPI: PCI interrupt 0000:00:01.0[A] -> GSI 16 (level, low) -> IRQ 169
ACPI: PCI interrupt 0000:00:1c.0[A] -> GSI 16 (level, low) -> IRQ 169
ACPI: PCI interrupt 0000:00:1c.1[B] -> GSI 17 (level, low) -> IRQ 177
ACPI: PCI interrupt 0000:00:1d.0[A] -> GSI 21 (level, low) -> IRQ 185
ACPI: PCI interrupt 0000:00:1d.1[B] -> GSI 22 (level, low) -> IRQ 193
ACPI: PCI interrupt 0000:00:1d.2[C] -> GSI 18 (level, low) -> IRQ 201
ACPI: PCI interrupt 0000:00:1d.3[D] -> GSI 23 (level, low) -> IRQ 209
ACPI: PCI interrupt 0000:00:1d.7[A] -> GSI 21 (level, low) -> IRQ 185
ACPI: PCI interrupt 0000:00:1e.2[A] -> GSI 23 (level, low) -> IRQ 209
ACPI: PCI interrupt 0000:00:1f.1[A] -> GSI 16 (level, low) -> IRQ 169
ACPI: PCI interrupt 0000:00:1f.2[C] -> GSI 20 (level, low) -> IRQ 217
ACPI: PCI interrupt 0000:00:1f.3[B] -> GSI 17 (level, low) -> IRQ 177
ACPI: PCI interrupt 0000:01:00.0[A] -> GSI 16 (level, low) -> IRQ 169
ACPI: PCI interrupt 0000:02:00.0[A] -> GSI 16 (level, low) -> IRQ 169
pnp: 00:00: ioport range 0x800-0x8df could not be reserved
pnp: 00:00: ioport range 0xc00-0xc7f has been reserved
Simple Boot Flag value 0x87 read from CMOS RAM was invalid
Simple Boot Flag at 0x7a set to 0x1
highmem bounce pool size: 64 pages
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
devfs: 2004-01-31 Richard Gooch ([email protected])
devfs: boot_options: 0x0
Initializing Cryptographic API
vesafb: framebuffer at 0xd0000000, mapped to 0xf8880000, using 7680k, total 16384k
vesafb: mode is 1280x1024x24, linelength=3840, pages=3
vesafb: protected mode interface info at c000:5890
vesafb: scrolling: redraw
vesafb: Truecolor: size=0:8:8:8, shift=0:16:8:0
fb0: VESA VGA frame buffer device
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
hpet_acpi_add: no address or irqs in _CRS
serio: i8042 AUX port at 0x60,0x64 irq 12
serio: i8042 KBD port at 0x60,0x64 irq 1
Serial: 8250/16550 driver $Revision: 1.90 $ 48 ports, IRQ sharing enabled
ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize
NET: Registered protocol family 2
IP: routing cache hash table of 8192 buckets, 64Kbytes
TCP: Hash tables configured (established 262144 bind 65536)
NET: Registered protocol family 8
NET: Registered protocol family 20
Starting balanced_irq
ACPI: (supports S0 S1 S3 S4 S5)
ACPI wakeup devices:
VBTN PCI0 PCI1 PCI2 PCI3 PCI4 KBD USB0 USB1 USB2 USB3
RAMDISK: cramfs filesystem found at block 0
RAMDISK: Loading 4984KiB [1 disk] into ram disk... |/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\done.
VFS: Mounted root (cramfs filesystem) readonly.
Freeing unused kernel memory: 188k freed
Console: switching to colour frame buffer device 160x64
NET: Registered protocol family 1
usbcore: registered new driver usbfs
usbcore: registered new driver hub
usbcore: registered new driver usbkbd
drivers/usb/input/usbkbd.c: :USB HID Boot Protocol keyboard driver
USB Universal Host Controller Interface driver v2.2
ACPI: PCI interrupt 0000:00:1d.0[A] -> GSI 21 (level, low) -> IRQ 185
uhci_hcd 0000:00:1d.0: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1
PCI: Setting latency timer of device 0000:00:1d.0 to 64
uhci_hcd 0000:00:1d.0: irq 185, io base 0xff80
uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 1
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
ACPI: PCI interrupt 0000:00:1d.1[B] -> GSI 22 (level, low) -> IRQ 193
uhci_hcd 0000:00:1d.1: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #2
PCI: Setting latency timer of device 0000:00:1d.1 to 64
uhci_hcd 0000:00:1d.1: irq 193, io base 0xff60
uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 2
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
ACPI: PCI interrupt 0000:00:1d.2[C] -> GSI 18 (level, low) -> IRQ 201
uhci_hcd 0000:00:1d.2: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #3
PCI: Setting latency timer of device 0000:00:1d.2 to 64
uhci_hcd 0000:00:1d.2: irq 201, io base 0xff40
uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 3
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 2 ports detected
ACPI: PCI interrupt 0000:00:1d.3[D] -> GSI 23 (level, low) -> IRQ 209
uhci_hcd 0000:00:1d.3: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #4
PCI: Setting latency timer of device 0000:00:1d.3 to 64
uhci_hcd 0000:00:1d.3: irq 209, io base 0xff20
uhci_hcd 0000:00:1d.3: new USB bus registered, assigned bus number 4
hub 4-0:1.0: USB hub found
hub 4-0:1.0: 2 ports detected
tg3.c:v3.11 (October 20, 2004)
ACPI: PCI interrupt 0000:02:00.0[A] -> GSI 16 (level, low) -> IRQ 169
PCI: Setting latency timer of device 0000:02:00.0 to 64
eth0: Tigon3 [partno(BCM95751) rev 4001 PHY(5750)] (PCIX:100MHz:32-bit) 10/100/1000BaseT Ethernet 00:11:11:31:bd:1f
eth0: RXcsums[1] LinkChgREG[1] MIirq[1] ASF[0] Split[0] WireSpeed[1] TSOcap[1]
usb 4-1: new full speed USB device using address 2
hub 4-1:1.0: USB hub found
hub 4-1:1.0: 4 ports detected
usb 4-1.2: new low speed USB device using address 3
input: Logitech USB Receiver on usb-0000:00:1d.3-1.2
tg3: eth0: Link is up at 100 Mbps, full duplex.
tg3: eth0: Flow control is off for TX and off for RX.

# modprobe ahci &
SCSI subsystem initialized
libata version 1.02 loaded.
ahci_init_one: ENTER
ahci version 0.11
ACPI: PCI interrupt 0000:00:1f.2[C] -> GSI 20 (level, low) -> IRQ 217
ahci_host_init: cap 0xc6107f03  port_map 0xf  n_ports 4
ahci_host_init: mmio f8848c00  port_mmio f8848d00
ahci_setup_port: ENTER, base==0xf8848c00, port_idx 0
ahci_setup_port: base now==0xf8848d00
ahci_setup_port: EXIT
ahci_host_init: PORT_CMD 0x6
ahci_host_init: PORT_SCR_ERR 0x4050000
ahci_host_init: PORT_IRQ_STAT 0x0
ahci_host_init: mmio f8848c00  port_mmio f8848d80
ahci_setup_port: ENTER, base==0xf8848c00, port_idx 1
ahci_setup_port: base now==0xf8848d80
ahci_setup_port: EXIT
ahci_host_init: PORT_CMD 0x6
ahci_host_init: PORT_SCR_ERR 0x4050000
ahci_host_init: PORT_IRQ_STAT 0x0
ahci_host_init: mmio f8848c00  port_mmio f8848e00
ahci_setup_port: ENTER, base==0xf8848c00, port_idx 2
ahci_setup_port: base now==0xf8848e00
ahci_setup_port: EXIT
ahci_host_init: PORT_CMD 0x6
ahci_host_init: PORT_SCR_ERR 0x4050000
ahci_host_init: PORT_IRQ_STAT 0x0
ahci_host_init: mmio f8848c00  port_mmio f8848e80
ahci_setup_port: ENTER, base==0xf8848c00, port_idx 3
ahci_setup_port: base now==0xf8848e80
ahci_setup_port: EXIT
ahci_host_init: PORT_CMD 0x6
ahci_host_init: PORT_SCR_ERR 0x4050000
ahci_host_init: PORT_IRQ_STAT 0x0
ahci_host_init: HOST_CTL 0x80000000
ahci_host_init: HOST_CTL 0x80000002
PCI: Setting latency timer of device 0000:00:1f.2 to 64
ahci(0000:00:1f.2) AHCI 0001.0000 32 slots 4 ports 1.5 Gbps 0xf impl
ahci(0000:00:1f.2) flags: 64bit ncq pm led slum part 
ata_device_add: ENTER
ata_host_add: ENTER
ata_port_start: prd alloc, virt f7d3d000, dma 37d3d000
ata1: SATA max UDMA/133 cmd 0xF8848D00 ctl 0x0 bmdma 0x0 irq 217
ata_host_add: ENTER
ata_port_start: prd alloc, virt f7e17000, dma 37e17000
ata2: SATA max UDMA/133 cmd 0xF8848D80 ctl 0x0 bmdma 0x0 irq 217
ata_host_add: ENTER
ata_port_start: prd alloc, virt f7d51000, dma 37d51000
ata3: SATA max UDMA/133 cmd 0xF8848E00 ctl 0x0 bmdma 0x0 irq 217
ata_host_add: ENTER
ata_port_start: prd alloc, virt c197b000, dma 197b000
ata4: SATA max UDMA/133 cmd 0xF8848E80 ctl 0x0 bmdma 0x0 irq 217
ata_device_add: probe begin
ata_device_add: ata1: probe begin
ahci_interrupt: ENTER
ahci_interrupt: port 0
ahci_interrupt: port 1
ahci_interrupt: port 2
ahci_interrupt: port 3
ahci_interrupt: EXIT
ahci_interrupt: ENTER
ahci_interrupt: port 0
ahci_interrupt: port 1
ahci_interrupt: port 2
ahci_interrupt: port 3
ahci_interrupt: EXIT
ata_dev_classify: found ATA device by sig
ata_dev_identify: ENTER, host 1, dev 0
ata_dev_select: ENTER, ata1: device 0, wait 1
ata_dev_identify: do ATA identify
ata_sg_setup_one: mapped buffer of 512 bytes for read
ahci_fill_sg: ENTER

# cat /proc/modules
ahci 12181 1 - Loading 0xf8820000
libata 53732 1 ahci, Live 0xf9031000
scsi_mod 131580 2 ahci,libata, Live 0xf905a000
tg3 87808 0 - Live 0xf8860000
uhci_hcd 34856 0 - Live 0xf8828000
usbkbd 7456 0 - Live 0xf881a000
usbcore 121352 3 uhci_hcd,usbkbd, Live 0xf9001000
unix 29260 0 - Live 0xf883e000
fbcon 38496 65 - Live 0xf8833000
font 8352 1 fbcon, Live 0xf8824000
bitblit 5792 1 fbcon, Live 0xf881d000

# ps -Hel
F S   UID   PID  PPID  C PRI  NI ADDR SZ WCHAN  TTY          TIME CMD
4 S     0     1     0  0  76   0 -   389 wait   ?        00:00:00 init
1 S     0     2     1  0 -40   0 -     0 migrat ?        00:00:00   migration/0
1 S     0     3     1  0  94  19 -     0 ksofti ?        00:00:00   ksoftirqd/0
1 S     0     4     1  0 -40   0 -     0 migrat ?        00:00:00   migration/1
1 S     0     5     1  0  94  19 -     0 ksofti ?        00:00:00   ksoftirqd/1
1 S     0     6     1  0  66 -10 -     0 worker ?        00:00:00   events/0
1 S     0     8     6  0  67 -10 -     0 worker ?        00:00:00     khelper
1 S     0    53     6  0  66 -10 -     0 worker ?        00:00:00     kblockd/1
1 S     0    64     6  0  75   0 -     0 pdflus ?        00:00:00     pdflush
1 S     0    67     6  0  66 -10 -     0 worker ?        00:00:00     aio/1
1 S     0   761     6  0  66 -10 -     0 worker ?        00:00:00     ata/0
1 S     0   762     6  0  66 -10 -     0 worker ?        00:00:00     ata/1
1 S     0     7     1  0  65 -10 -     0 worker ?        00:00:00   events/1
1 S     0     9     7  0  69 -10 -     0 worker ?        00:00:00     kacpid
1 S     0    52     7  0  66 -10 -     0 worker ?        00:00:00     kblockd/0
1 S     0    63     7  0  80   0 -     0 pdflus ?        00:00:00     pdflush
1 S     0    66     7  0  66 -10 -     0 worker ?        00:00:00     aio/0
1 S     0    65     1  0  77   0 -     0 kswapd ?        00:00:00   kswapd0
1 S     0   653     1  0  81   0 -     0 serio_ ?        00:00:00   kseriod
1 S     0   724     1  0  75   0 -     0 -      ?        00:00:00   kirqd
1 S     0   733     1  0  75   0 -     0 hub_th ?        00:00:00   khubd
4 S     0   753     1  0  76   0 -   391 wait   ?        00:00:00   sh
4 D     0   760   753  0  78   0 -   379 ata_de ?        00:00:00     modprobe
0 R     0   773   753  0  77   0 -   573 -      ?        00:00:00     ps
1 S     0   763     1  0  79   0 -     0 415898 ?        00:00:00   scsi_eh_0
1 S     0   764     1  0  80   0 -     0 415899 ?        00:00:00   scsi_eh_1
1 S     0   765     1  0  81   0 -     0 415907 ?        00:00:00   scsi_eh_2
1 S     0   766     1  0  82   0 -     0 415907 ?        00:00:00   scsi_eh_3

Known AHCI problem, I'm working on the solution right now...

Jeff

This patch makes the following changes to drivers/scsi/ahci.c

- Add definition for SActive register
- Add most interrupt sources to default interrupt mask
- Write low 32 bits of FIS address to PxFB, where they belong
- Set command active bit in PxSACT before setting command issue bit in PxCI
- Announce Sub Class Code in driver info message [IDE, SATA or RAID]

Signed-off-by: Matthijs Melchior <[email protected]>

@@ -90,6 +90,7 @@
 	PORT_SCR_STAT		= 0x28, /* SATA phy register: SStatus */
 	PORT_SCR_CTL		= 0x2c, /* SATA phy register: SControl */
 	PORT_SCR_ERR		= 0x30, /* SATA phy register: SError */
+        PORT_SCR_ACT            = 0x34, /* SATA phy register: SActive */
 
 	/* PORT_IRQ_{STAT,MASK} bits */
 	PORT_IRQ_COLD_PRES	= (1 << 31), /* cold presence detect */

@@ -116,6 +117,9 @@
 				  PORT_IRQ_HBUS_DATA_ERR |
 				  PORT_IRQ_IF_ERR,
 	DEF_PORT_IRQ		= PORT_IRQ_FATAL | PORT_IRQ_PHYRDY |
+                                  PORT_IRQ_CONNECT | PORT_IRQ_SG_DONE |
+                                  PORT_IRQ_UNK_FIS | PORT_IRQ_SDB_FIS |
+                                  PORT_IRQ_DMAS_FIS | PORT_IRQ_PIOS_FIS |
 				  PORT_IRQ_D2H_REG_FIS,
 
 	/* PORT_CMD bits */

@@ -329,8 +333,8 @@
 
 	if (hpriv->cap & HOST_CAP_64)
 		writel((pp->rx_fis_dma >> 16) >> 16, port_mmio + PORT_FIS_ADDR_HI);
-	writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_LST_ADDR);
-	readl(port_mmio + PORT_LST_ADDR); /* flush */
+	writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_FIS_ADDR);
+	readl(port_mmio + PORT_FIS_ADDR); /* flush */
 
 	writel(PORT_CMD_ICC_ACTIVE | PORT_CMD_FIS_RX |
 	       PORT_CMD_POWER_ON | PORT_CMD_SPIN_UP |

@@ -673,10 +677,13 @@
 static int ahci_qc_issue(struct ata_queued_cmd *qc)
 {
 	struct ata_port *ap = qc->ap;
-	void *mmio = (void *) ap->ioaddr.cmd_addr;
+	void *port_mmio = (void *) ap->ioaddr.cmd_addr;
 
-	writel(1, mmio + PORT_CMD_ISSUE);
-	readl(mmio + PORT_CMD_ISSUE);	/* flush */
+	writel(1, port_mmio + PORT_SCR_ACT);
+	readl(port_mmio + PORT_SCR_ACT);	/* flush */
+
+	writel(1, port_mmio + PORT_CMD_ISSUE);
+	readl(port_mmio + PORT_CMD_ISSUE);	/* flush */
 
 	return 0;
 }

@@ -859,6 +866,8 @@
 	void *mmio = probe_ent->mmio_base;
 	u32 vers, cap, impl, speed;
 	const char *speed_s;
+        u16 cc;
+        const char *scc_s;
 
 	vers = readl(mmio + HOST_VERSION);
 	cap = hpriv->cap;

@@ -872,8 +881,18 @@
 	else
 		speed_s = "?";
 
+        pci_read_config_word(pdev, 0x0a, &cc);
+        if (cc == 0x0101)
+                scc_s = "IDE";
+        else if (cc == 0x0106)
+                scc_s = "SATA";
+        else if (cc == 0x0104)
+                scc_s = "RAID";
+        else
+                scc_s = "unknown";
+
 	printk(KERN_INFO DRV_NAME "(%s) AHCI %02x%02x.%02x%02x "
-		"%u slots %u ports %s Gbps 0x%x impl\n"
+		"%u slots %u ports %s Gbps 0x%x impl %s mode\n"
 	       	,
 	       	pci_name(pdev),
 

@@ -885,7 +904,8 @@
 		((cap >> 8) & 0x1f) + 1,
 		(cap & 0x1f) + 1,
 		speed_s,
-		impl);
+		impl,
+                scc_s);
 
 	printk(KERN_INFO DRV_NAME "(%s) flags: "
 	       	"%s%s%s%s%s%s"

heh, cool... you found the stupid AHCI bug that I have been searching for for over a week :)

Patch looks good, will test...

Jeff