Messages in this thread | | | Subject | Re: disabling dma/new ide interface 2.6.18-rc4-mm1 | From | Alan Cox <> | Date | Mon, 21 Aug 2006 17:24:52 +0100 |
| |
Ar Llu, 2006-08-21 am 15:27 +0100, ysgrifennodd Bahadir Balban: > Hi, > > I am trying to implement a basic ide driver based on ata_generic.c. > Its a pio-only device. > > How do I disable dma on the new interface? Changing ata_port_info fields?
ata_generic.c assumes the BIOS set up the timings and the device follows PCI SFF. In those cases it already correctly handles PIO only controllers.
If you are trying to write a driver for a non PCI motherboard device (Eg on an embedded board) then drivers/ata/pata_qdi.c may be a better example to follow as it sets up all the device ports by hand as a platform device.
If you want PIO only then don't provide mwdma or udma mode masks in the ata_port_info.
Alan
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |