> On 2011-02-23 4:48 PM, Wojciech Dubowik wrote:
> > Signed-off-by: Wojciech Dubowik <wojciech.dubo...@neratec.com>
> Please make this dynamic. On the Fonera 2.0, PCI is used for USB 2.0
> support and AHB is used for wireless.
>
> - Felix
Hello Felix,
Will this do the trick for dma mapping?
--- a/arch/mips/include/asm/mach-ar231x/dma-coherence.h
+++ b/arch/mips/include/asm/mach-ar231x/dma-coherence.h
@@ -12,16 +12,23 @@
#define PCI_DMA_OFFSET 0x20000000
+extern struct bus_type pci_bus_type;
struct device;
static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
{
- return virt_to_phys(addr) + (dev != NULL ? PCI_DMA_OFFSET : 0);
+ if (dev == NULL)
+ return virt_to_phys(addr);
+ else
+ return virt_to_phys(addr) + (dev->bus == &pci_bus_type ?
PCI_DMA_OFFSET : 0);
}
static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
{
- return page_to_phys(page) + (dev != NULL ? PCI_DMA_OFFSET : 0);
+ if (dev == NULL)
+ return page_to_phys(page);
+ else
+ return page_to_phys(page) + (dev->bus == &pci_bus_type ?
PCI_DMA_OFFSET : 0);
}
static inline unsigned long plat_dma_addr_to_phys(struct device *dev,
I have tested it on my AR2315 with pci bus enabled. I don't have anything
attached to it
so I cannot say that pci dma really works.
Br,
Wojtek
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