> My device has the limitation that the command buffers I send > must be in 32 > bit space, but the IO can be in 64 bit. But there is only > ONE dma_mask for the device. Ahh, yes. The AMI MegaRAID driver/controllers have the same requirements. megaraid solved it as: pci_find_device() finds their device, they get a pci_dev back which has a 32-bit dma_mask. pci_alloc_consistent() the mailbox (this must be in 32-bit space). if it's a 64-bit-capable controller, set pci_dev->dma_mask = ~0L. pci_alloc_consistent() the command buffers and scatter-gather lists (these can be in 64-bit space). Could something similar work for you? Thanks, Matt -- Matt Domsch Sr. Software Engineer Dell Linux Solutions www.dell.com/linux #2 Linux Server provider with 17% in the US and 14% Worldwide (IDC)! #3 Unix provider with 18% in the US (Dataquest)!Received on Mon Jul 09 08:22:14 2001
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