Arnd Bergmann wrote: > I'm guessing that you don't really mean dma_addr_t here, but rather > phys_addr_t, which is something different.
Now that I think about it, I don't know which is correct. The value is plugged into the pointer register of a buffer descriptor, and the QE performs a DMA-like memory transfer from that address into its local memory. I don't know if the QE is considered "external" enough that the address is a DMA address or a physical address. When I program the DMA controller, I give it a dma_addr_t. And yet, the DMA controller and the QE are both devices on the SoC. So if the DMA controller takes a dma_addr_t, then shouldn't the QE also take one? -- Timur Tabi Linux kernel developer at Freescale _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
