Peter Stuge wrote:
Myles Watson wrote:
In case this turns out to be a dead end, what does porting a driver
to FILO involve?
It depends on the requirements of the driver,
Storage. nvidia ck804 sata.
Ugh. Probably painful. From linux/drivers/ata/sata_nv.c:
* No hardware documentation available outside of NVIDIA.
* This driver programs the NVIDIA SATA controller in a similar
* fashion as with other PCI IDE BMDMA controllers, with a few
* NV-specific details such as register offsets, SATA phy location,
* hotplug info, etc.
*
* CK804/MCP04 controllers support an alternate programming interface
* similar to the ADMA specification (with some modifications).
* This allows the use of NCQ. Non-DMA-mapped ATA commands are still
* sent through the legacy interface.
There's no DMA infrastructure in FILO or libpayload.
But the second paragraph seems to imply that PIO through legacy
interface should work.
Its easy enough to tell - if you look at the PCI device before it gets
switched into NCQ mode the PCI config space should be immediately
recognizable as a IDE part.
Jordan
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