Re: Boot panic w/7.2-STABLE on amd64: resource_list_alloc

John Baldwin wrote:
Sounds like the ATA driver is allocating the same BAR twice. Hmm, yes, it allocates the resources once for each channel it seems in the ata_ali_sata attachment. Looking in ata-chipset.c, all the other chipsets are good about allocating these resources in their chipinit routines rather than the per-channel allocate routine. Well, except ata_pci_allocate() is also busted. *sigh* I can work on a patch for HEAD if you are willing to test.

ata_pci_allocate() (now known as ata_pci_ch_attach()) is a different case. It uses allocation functions wrapped by the atapci "bus", so every channel uses it's own pair of RIDs.

Problem of ALI SATA is a bit different. As I understand, controller has two pairs of RIDs for 4 channels, so each channel should share resources with another one, just using different offset. Is there any other way to correctly handle two halves of same resource separately without teaching atapci to virtualize this as interrupts or handle it on controller level?

--
Alexander Motin
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