On Tue, 16 Oct 2007 18:43:16 -0700 [email protected] wrote:
> @@ -153,7 +153,7 @@ EXPORT_SYMBOL(sn_dma_free_coherent);
> * @dev: device to map for
> * @cpu_addr: kernel virtual address of the region to map
> * @size: size of the region
> - * @direction: DMA direction
> + * @flags: DMA direction, and arch-specific attributes
> *
> * Map the region pointed to by @cpu_addr for DMA and return the
> * DMA address.
> @@ -167,17 +167,23 @@ EXPORT_SYMBOL(sn_dma_free_coherent);
> * figure out how to save dmamap handle so can use two step.
> */
> dma_addr_t sn_dma_map_single(struct device *dev, void *cpu_addr, size_t size,
> - int direction)
> + int flags)
> {
> dma_addr_t dma_addr;
> unsigned long phys_addr;
> struct pci_dev *pdev = to_pci_dev(dev);
> struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev);
> + int dmabarrier = dma_flags_get_attr(flags) & DMA_BARRIER_ATTR;
So we take an `enum data_direction' and then wedge it into a word alongside
some extra flags?
Can we do something nicer than that?
-
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