Re: [PATCH] ata_piix: fix pio/mwdma programming (for testing, don't apply)

["Art Haas" <ahaas@airmail.net>]

On Sat, Feb 03, 2007 at 12:18:56AM +0900, Tejun Heo wrote:
> Hello, Art Haas, Alan.
> 
> Okay, here's another try at fixing the detection bug.  I went through
> intel ich docs and compared with the ide piix driver.  This patch
> fixes the following problems.
> 
> * Control bits in the timing register wasn't cleared properly while
>   programming PIO mode.
> 
> * MWDMA mode programming cleared the wrong part of control bits.  I
>   think this can fix your problem.
> 
> * MWDMA mode programming cleared udma_mask even when the controller
>   doesn't support UDMA.  This doesn't matter for your case.
> 
> Please test and report the result.  Thanks.

Hi. Sorry to say the CD-ROM is still not found. Full 'dmesg' output
listed below in hopes it provides clues.

$ dmesg
Linux version 2.6.20-rc7-ajh (arth@pcdebian) (gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)) #3 Fri Feb 2 12:15:03 CST 2007
BIOS-provided physical RAM map:
sanitize start
sanitize end
copy_e820_map() start: 0000000000000000 size: 00000000000a0000 end: 00000000000a0000 type: 1
copy_e820_map() type is E820_RAM
copy_e820_map() start: 00000000000f0000 size: 0000000000010000 end: 0000000000100000 type: 2
copy_e820_map() start: 0000000000100000 size: 000000001fef0000 end: 000000001fff0000 type: 1
copy_e820_map() type is E820_RAM
copy_e820_map() start: 000000001fff0000 size: 0000000000003000 end: 000000001fff3000 type: 4
copy_e820_map() start: 000000001fff3000 size: 000000000000d000 end: 0000000020000000 type: 3
copy_e820_map() start: 00000000ffff0000 size: 0000000000010000 end: 0000000100000000 type: 2
 BIOS-e820: 0000000000000000 - 00000000000a0000 (usable)
 BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 000000001fff0000 (usable)
 BIOS-e820: 000000001fff0000 - 000000001fff3000 (ACPI NVS)
 BIOS-e820: 000000001fff3000 - 0000000020000000 (ACPI data)
 BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved)
511MB LOWMEM available.
Entering add_active_range(0, 0, 131056) 0 entries of 256 used
Zone PFN ranges:
  DMA             0 ->     4096
  Normal       4096 ->   131056
early_node_map[1] active PFN ranges
    0:        0 ->   131056
On node 0 totalpages: 131056
  DMA zone: 32 pages used for memmap
  DMA zone: 0 pages reserved
  DMA zone: 4064 pages, LIFO batch:0
  Normal zone: 991 pages used for memmap
  Normal zone: 125969 pages, LIFO batch:31
DMI 2.1 present.
ACPI: RSDP (v000 GBT                                   ) @ 0x000f6c60
ACPI: RSDT (v001 GBT    AWRDACPI 0x00000000  0x00000000) @ 0x1fff3000
ACPI: FADT (v001 GBT    AWRDACPI 0x00000000  0x00000000) @ 0x1fff3040
ACPI: DSDT (v001 GBT    AWRDACPI 0x00001000 MSFT 0x01000007) @ 0x00000000
ACPI: PM-Timer IO Port: 0x4008
Allocating PCI resources starting at 30000000 (gap: 20000000:dfff0000)
Detected 398.969 MHz processor.
Built 1 zonelists.  Total pages: 130033
Kernel command line: BOOT_IMAGE=2.6.20-rc7-ajh ro root=LABEL=/ root=/dev/sda1
Local APIC disabled by BIOS -- you can enable it with "lapic"
mapped APIC to ffffd000 (01402000)
Enabling fast FPU save and restore... done.
Initializing CPU#0
PID hash table entries: 2048 (order: 11, 8192 bytes)
Console: colour VGA+ 80x25
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Memory: 516956k/524224k available (1461k kernel code, 6724k reserved, 484k data, 148k init, 0k highmem)
virtual kernel memory layout:
    fixmap  : 0xffff7000 - 0xfffff000   (  32 kB)
    vmalloc : 0xe0800000 - 0xffff5000   ( 503 MB)
    lowmem  : 0xc0000000 - 0xdfff0000   ( 511 MB)
      .init : 0xc02ea000 - 0xc030f000   ( 148 kB)
      .data : 0xc026d68f - 0xc02e6a50   ( 484 kB)
      .text : 0xc0100000 - 0xc026d68f   (1461 kB)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay using timer specific routine.. 798.28 BogoMIPS (lpj=399143)
Mount-cache hash table entries: 512
CPU: After generic identify, caps: 0183f9ff 00000000 00000000 00000000 00000000 00000000 00000000
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 512K
CPU: After all inits, caps: 0183f9ff 00000000 00000000 00000040 00000000 00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: Intel Pentium II (Deschutes) stepping 01
Checking 'hlt' instruction... OK.
ACPI: Core revision 20060707
ACPI: setting ELCR to 0200 (from 1c00)
NET: Registered protocol family 16
ACPI: bus type pci registered
PCI: PCI BIOS revision 2.10 entry at 0xfb3c0, last bus=1
PCI: Using configuration type 1
Setting up standard PCI resources
ACPI: Interpreter enabled
ACPI: Using PIC for interrupt routing
ACPI: PCI Root Bridge [PCI0] (0000:00)
PCI: Probing PCI hardware (bus 00)
ACPI: Assume root bridge [\_SB_.PCI0] bus is 0
* Found PM-Timer Bug on the chipset. Due to workarounds for a bug,
* this clock source is slow. Consider trying other clock sources
PCI quirk: region 4000-403f claimed by PIIX4 ACPI
PCI quirk: region 5000-500f claimed by PIIX4 SMB
Boot video device is 0000:00:08.0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 *10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 10 11 *12 14 15)
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 10 *11 12 14 15)
ACPI: Power Resource [PFAN] (on)
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI init
pnp: ACPI device : hid PNP0A03
pnp: ACPI device : hid PNP0C01
pnp: ACPI device : hid PNP0C02
pnp: ACPI device : hid PNP0200
pnp: ACPI device : hid PNP0B00
pnp: ACPI device : hid PNP0800
pnp: ACPI device : hid PNP0C04
pnp: ACPI device : hid PNP0700
pnp: ACPI device : hid PNP0501
pnp: ACPI device : hid PNP0501
pnp: ACPI device : hid PNP0400
pnp: ACPI device : hid PNP0303
pnp: PnP ACPI: found 12 devices
PnPBIOS: Disabled by ACPI PNP
SCSI subsystem initialized
libata version 2.00 loaded.
PCI: Using ACPI for IRQ routing
PCI: If a device doesn't work, try "pci=routeirq".  If it helps, post a report
pnp: the driver 'system' has been registered
pnp: match found with the PnP device '00:01' and the driver 'system'
pnp: match found with the PnP device '00:02' and the driver 'system'
PCI: Bridge: 0000:00:01.0
  IO window: d000-dfff
  MEM window: disabled.
  PREFETCH window: disabled.
NET: Registered protocol family 2
IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
TCP established hash table entries: 16384 (order: 4, 65536 bytes)
TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
TCP: Hash tables configured (established 16384 bind 8192)
TCP reno registered
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler deadline registered
io scheduler cfq registered
Limiting direct PCI/PCI transfers.
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled
serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
pnp: the driver 'serial' has been registered
pnp: match found with the PnP device '00:08' and the driver 'serial'
00:08: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
pnp: match found with the PnP device '00:09' and the driver 'serial'
00:09: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
ata_piix 0000:00:07.1: version 2.00ac7
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
scsi0 : ata_piix
ata1.00: ATA-2, max UDMA/33, 6303024 sectors: LBA 
ata1.00: ata1: dev 0 multi count 16
ata1.01: ATA-4, max UDMA/66, 16514064 sectors: LBA 
ata1.01: ata1: dev 1 multi count 16
ata1.00: configured for UDMA/33
ata1.01: configured for UDMA/33
scsi1 : ata_piix
ata2.00: ATAPI, max MWDMA1
ata2.00: revalidation failed (errno=-2)
ata2.00: limiting speed to PIO4
ata2: failed to recover some devices, retrying in 5 secs
ata2.00: revalidation failed (errno=-2)
ata2.00: limiting speed to PIO0
ata2: failed to recover some devices, retrying in 5 secs
ata2.00: revalidation failed (errno=-2)
ata2.00: disabled
scsi 0:0:0:0: Direct-Access     ATA      ST33232A         3.02 PQ: 0 ANSI: 5
SCSI device sda: 6303024 512-byte hdwr sectors (3227 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: write cache: disabled, read cache: enabled, doesn't support DPO or FUA
SCSI device sda: 6303024 512-byte hdwr sectors (3227 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: write cache: disabled, read cache: enabled, doesn't support DPO or FUA
 sda: sda1 sda2 < sda5 sda6 sda7 >
sd 0:0:0:0: Attached scsi disk sda
scsi 0:0:1:0: Direct-Access     ATA      FUJITSU MPD3084A DD-0 PQ: 0 ANSI: 5
SCSI device sdb: 16514064 512-byte hdwr sectors (8455 MB)
sdb: Write Protect is off
sdb: Mode Sense: 00 3a 00 00
SCSI device sdb: write cache: enabled, read cache: enabled, doesn't support DPO or FUA
SCSI device sdb: 16514064 512-byte hdwr sectors (8455 MB)
sdb: Write Protect is off
sdb: Mode Sense: 00 3a 00 00
SCSI device sdb: write cache: enabled, read cache: enabled, doesn't support DPO or FUA
 sdb: sdb1 sdb2 < sdb5 sdb6 > sdb3
sd 0:0:1:0: Attached scsi disk sdb
pnp: the driver 'i8042 kbd' has been registered
pnp: match found with the PnP device '00:0b' and the driver 'i8042 kbd'
pnp: the driver 'i8042 aux' has been registered
PNP: PS/2 Controller [PNP0303:PS2K] at 0x60,0x64 irq 1
PNP: PS/2 controller doesn't have AUX irq; using default 12
serio: i8042 KBD port at 0x60,0x64 irq 1
mice: PS/2 mouse device common for all mice
input: AT Translated Set 2 keyboard as /class/input/input0
TCP cubic registered
Using IPI Shortcut mode
Time: tsc clocksource has been installed.
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 148k freed
NET: Registered protocol family 1
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
Real Time Clock Driver v1.12ac
pnp: the driver 'parport_pc' has been registered
pnp: match found with the PnP device '00:0a' and the driver 'parport_pc'
parport: PnPBIOS parport detected.
parport0: PC-style at 0x378, irq 7 [PCSPP(,...)]
8139too Fast Ethernet driver 0.9.28
ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 12
PCI: setting IRQ 12 as level-triggered
ACPI: PCI Interrupt 0000:00:0a.0[A] -> Link [LNKC] -> GSI 12 (level, low) -> IRQ 12
eth0: RealTek RTL8139 at 0xe0816000, 00:05:5d:45:47:96, IRQ 12
eth0:  Identified 8139 chip type 'RTL-8139C'
Adding 100760k swap on /dev/sda7.  Priority:-1 extents:1 across:100760k
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
NET: Registered protocol family 17
eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
ttyS3: LSR safety check engaged!
ttyS3: LSR safety check engaged!
$

-- 
Man once surrendering his reason, has no remaining guard against absurdities
the most monstrous, and like a ship without rudder, is the sport of every wind.

-Thomas Jefferson to James Smith, 1822