Re: [SeaBIOS] [PATCH 2/4] ahci: enable io/mem/dma

[Kevin O'Connor]

On Wed, Dec 08, 2010 at 11:24:12AM +0100, Gerd Hoffmann wrote:
> Make sure IO, MMIO and DMA are enabled in pci config space
> before using the device.

[...]
> cmd = pci_config_readw(bdf, PCI_COMMAND);
> cmd |= PCI_COMMAND_IO;
> cmd |= PCI_COMMAND_MEMORY;
> cmd |= PCI_COMMAND_MASTER;
> pci_config_writew(bdf, PCI_COMMAND, cmd);

One can use pci_config_maskw() for this.

-Kevin