Marvell PATA controller (88SE6101, PCI ID: 11ab:6101) is not supported by kernel. This controller is present in Intel motherboards based on P965/Q965/G965 chipsets. There is a patch for 2.6.18 kernel published at LKML: http://lkml.org/lkml/2006/10/16/157
I have an Intel DG965WH motherboard with this controller; booting with "all-generic-ide" and "irqpoll" options let me use my PATA cdrom, but every once in a while i get this message in dmesg output: "hdi: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request."
I also had some success by adding ide2=0x1018 to the kernel command line, after setting the BIOS to use AHCI for the SATA drives. The latter turn up as sda and sdb, while the CDROM turns up as hde. I also used all-generic-ide to find out the base address above; note that ide0=0x1018 resulted in "disabling interrupt #169" with the kernel boot processing stopping dead there.
The above was using a i686 kernel, the address using an X86_64 ended up being different; it is probably wiser to use "all-generic-ide" instead. However, I burned a Fedora DVD just fine (from nautilus) with the above setting.
pata_marvell first appears in 2.6.20. I was able to compile pata_marvell.c from 2.6.20 under 2.6.19 without problems, and resulting pata_marvell.ko works ok.
Unfortunately CONFIG_PATA_MARVELL is not set in 2.6.20-1.2925.fc6. Please include it in the next kernel build, as without it CDs are not working in 965 chipsets.
I just wanted to second Nerijus's request. I have a Intel DG965WH motherboard and have been waiting for for this chipset to be supported in Fedora; the fix has been in the kernel since the 2.6.20 release in late Jan/early Feb but hasn't shown up yet. Please include it in the next release.
Follow-up: I grabbed the source RPM for kernel-2.6.20-1.2933.fc6.x86_64, enabled CONFIG_PATA_MARVELL in the .config file as a module, compiled it, and loaded the pata_marvell.ko driver. It works just fine on my DG965WH motherboard; I was able to see my DVD drive and successfully play a test DVD.
pata_marvell will be enabled in the next release.
It is enabled in 2.6.20-1.2944.fc6 and works ok, thanks!