Comment 4 for bug 513131

Certainly I can confirm that the 10.04 Ubuntu power-pc mac live cd (uname: Linux ubuntu 2.6.32-21-powerpc #32-Ubuntu Fri Apr 16 08:10:47 UTC 2010 ppc GNU/Linux) does not load a driver for:
 01:01.0 IDE interface: Silicon Image, Inc. PCI0646 (rev 07), and I am unable to see any of the drives on that controller.
The /lib/modules/2.6.32-21-powerpc/kernel/drivers/ide directory does not exist, and there is no pata variant of the cmd64x driver in /lib/modules/2.6.32-21-powerpc/kernel/ata.

Here is lsmod:
Module Size Used by
nls_cp437 5223 1
smbfs 73154 0
cifs 270546 2
binfmt_misc 8530 1
radeon 802403 0
ttm 62566 1 radeon
drm_kms_helper 31219 1 radeon
drm 192389 3 radeon,ttm,drm_kms_helper
agpgart 39895 2 ttm,drm
ipv6 299918 10
ppdev 7877 0
lp 9304 0
parport 39110 2 ppdev,lp
snd_powermac 68187 2
dm_crypt 14921 0
snd_pcm_oss 47872 0
snd_mixer_oss 19382 1 snd_pcm_oss
snd_pcm 87095 2 snd_powermac,snd_pcm_oss
snd_seq_dummy 1766 0
snd_seq_oss 36232 0
snd_seq_midi 6161 0
snd_rawmidi 24746 1 snd_seq_midi
snd_seq_midi_event 7367 2 snd_seq_oss,snd_seq_midi
snd_seq 61897 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer 24515 2 snd_pcm,snd_seq
snd_seq_device 7524 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
snd 70628 13 snd_powermac,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
pcilynx 17049 0
soundcore 7534 1 snd
ieee1394 97330 1 pcilynx
pmac_zilog 18110 0
snd_page_alloc 7660 1 snd_pcm
serial_core 23813 1 pmac_zilog
rtc_generic 1391 0
evdev 10257 4
squashfs 26239 1
loop 16948 2
aufs 191198 1
isofs 35744 1
windfarm_core 10420 0
dm_mirror 15615 0
dm_region_hash 11772 1 dm_mirror
dm_log 11095 2 dm_mirror,dm_region_hash
dm_mod 82087 3 dm_crypt,dm_mirror,dm_log
usbhid 44238 0
aic7xxx 134490 0
hid 78460 1 usbhid
bmac 13992 0
mesh 21149 0
scsi_transport_spi 26921 1 aic7xxx
ata_generic 3247 0