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authorJeff Garzik <jeff@garzik.org>2007-02-26 01:26:06 -0500
committerJeff Garzik <jeff@garzik.org>2007-04-28 14:15:55 -0400
commitd88184fb2348a50f7c34f5d49a901c875b2e0114 (patch)
tree83993038a7525f6b61aea8f76ea38ddb96325a2f /include
parent43727fbc753c63f9d2764c56467303698cc52c14 (diff)
[libata] sata_mv: clean up DMA boundary issues, turn on 64-bit DMA
The chips covered by sata_mv have a 32-bit DMA boundary they must not cross, not a 64K boundary. We are merely limited to a 64K maximum segment size. Therefore, the DMA scatter/gather table fill code can be greatly simplified, and we need not cut in half the S/G table size as reported to the SCSI layer. Also, the driver forget to turn on 64-bit DMA at the PCI layer. All other data structures (both hardware and software) have been prepped for 64-bit PCI DMA. It was simply never turned on. <fingers crossed> let's see if it still works... Signed-off-by: Jeff Garzik <jeff@garzik.org>
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