Re: PCI+ATA

[Robert Millan <rmh@aybabtu.com>]

On Sat, Feb 02, 2008 at 07:38:43PM +0100, Marco Gerards wrote:
> Hi,
> 
> Here is a patch for testing purposes.  I hope people can test this on
> actual hardware.  Testing will help a lot for the development of the
> ATA driver.
> 
> The code to reset the channel was removed, replace with something that
> only queries the channel.  Code for probing IDE Controllers on the PCI
> bus is added.  Channels in compatibility mode were supported and are
> still supported.  Now also more controllers should be used, but I
> don't have boxes to test this on and qemu can't be used for this.  So
> please test.

You forgot to remove the `grub_disk_firmware_is_tainted' hack.  That prevents
biosdisk from working afterwards (but it doesn't affect my test, see below).

> Please tell me (read this before testing!):
> 
> 1) Does it work perfectly (yes/no) as in, all devices are detected and
>    can be accessed.  If no: what's the problem.

Hangs during init.  Messages printed:

disk/ata.c:470: PCI dev (0,6,0) compat=0 rega=0x1f0 regb=0x3f6
disk/ata.c:339: detecting device 0,0 (0x1f0, 0x3f6)
disk/ata.c:376: Registers: 1 1 0 0
disk/ata.c:397: ATA detected
disk/ata.c:212: Serial: 5JXEZS01
disk/ata.c:214: Firmware: 8.01
disk/ata.c:216: Model: ST340014A
disk/ata.c:218: Addressing: 2 #sectors: 78165360
disk/ata.c:339: detecting device 0,1 (0x1f0, 0x3f6)
disk/ata.c:376: Registers: 1 1 0 0
disk/ata.c:397: ATA detected

ctrl-alt-del stops working (scrambled IDT ?)

> 2) Did it work before applying this patch? (yes/no)

It detected my CD drive (ata3), but was unable to access it.  The following
command:

  ls (ata3)/

just hangs, producing no debugging output, and makes ctrl-alt-del stop
working as well.  It _did_ archieve to make the drive spin, though.

> 3) "rmmod ata", "insmod biosdisk" can you still access your disks

N/A

> 4) Same as 3, but before applying this patch

Note: insmodding biosdisk is likely impossible when you can't access the
disks ;-)

When disabling `grub_disk_firmware_is_tainted', and loading both (preloaded
in core.img), I can still access the hard disk via (hd0) (however, note the
hard disk wasn't detected by ata.mod, only the CD).

> 5) If there are problems, use:
> set debug=ata
> insmod ata

In case this helps:

grub> lspci
00:00.0 005e:10de.0 Memory Controller
00:01.0 0050:10de.0 ISA Bridge
00:01.1 0052:10de.1 Serial Bus Controller
00:02.0 005a:10de.0 Serial Bus Controller
00:02.1 005b:10de.1 Serial Bus Controller
00:04.0 0059:10de.0 Multimedia Audio Device
00:06.0 0053:10de.0 IDE Controller
00:07.0 0054:10de.0 IDE Controller
00:08.0 0055:10de.0 IDE Controller
00:09.0 005c:10de.0 PCI-PCI Bridge
00:0a.0 0057:10de.0 Unknown Bridge
00:0b.0 005d:10de.0 PCI-PCI Bridge
00:0c.0 005d:10de.0 PCI-PCI Bridge
00:0d.0 005d:10de.0 PCI-PCI Bridge
00:0e.0 005d:10de.0 PCI-PCI Bridge
00:18.0 1100:1022.0 Host Bridge
00:18.1 1101:1022.1 Host Bridge
00:18.2 1102:1022.2 Host Bridge
00:00.0 94c3:1002.0 VGA Controller
00:00.1 aa10:1002.1 Multimedia device
00:07.0 0002:1102.0 Multimedia Audio Device
00:07.1 7002:1102.1 Unknown Input Device

$ sudo lspci
00:00.0 Memory controller: nVidia Corporation CK804 Memory Controller (rev a3)
00:01.0 ISA bridge: nVidia Corporation CK804 ISA Bridge (rev a3)
00:01.1 SMBus: nVidia Corporation CK804 SMBus (rev a2)
00:02.0 USB Controller: nVidia Corporation CK804 USB Controller (rev a2)
00:02.1 USB Controller: nVidia Corporation CK804 USB Controller (rev a3)
00:04.0 Multimedia audio controller: nVidia Corporation CK804 AC'97 Audio Controller (rev a2)
00:06.0 IDE interface: nVidia Corporation CK804 IDE (rev f2)
00:07.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev f3)
00:08.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev f3)
00:09.0 PCI bridge: nVidia Corporation CK804 PCI Bridge (rev a2)
00:0a.0 Bridge: nVidia Corporation CK804 Ethernet Controller (rev a3)
00:0b.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3)
00:0c.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3)
00:0d.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3)
00:0e.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:00.0 VGA compatible controller: ATI Technologies Inc Unknown device 94c3
01:00.1 Audio device: ATI Technologies Inc Unknown device aa10
05:07.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 04)
05:07.1 Input device controller: Creative Labs SB Live! Game Port (rev 01)

-- 
Robert Millan

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