Messages in this thread | | | Date | Tue, 25 Oct 2005 13:37:25 -0400 | From | Jeff Garzik <> | Subject | Re: reference code for non-PCI libata complaint SATA for ARM boards. |
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Alan Cox wrote: > On Maw, 2005-10-25 at 17:41 +0530, Deven Balani wrote: > >>Hi All! >> >>I am currently writing a low-level driver for non-PCI SATA controller >>in ARM platform.which uses libata-core.c for linux-2.4.25. Can any one >>tell me any reference code available under linux. > > > At the moment its a bit hard to do a non PCI driver because the core > code assumes that there is a device structure (or pci_dev structure) for > everything. Fixing that is a two line change for 2.6 (probably similar > for 2.4) but Jeff Garzik rejected it.
In 2.6.x, libata needs no fixes to support non-PCI devices.
An out-of-tree driver for a non-PCI embedded board exists, and works 100%. Use of struct device and dma_xxx() means it is bus-agnostic. That's how the whole system was designed to work -- and work, it does.
None of this is true in 2.4.x, of course...
Jeff
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