On Wed, 2014-03-05 at 11:43 +0530, Jagan Teki wrote: > As per your point I've a question here like - the status block is not properly > updated (DMA'ed), does this depends on the address range we are advertised > on PCIe ranges filed to make sure to use EP- > http://devicetree.org/Device_Tree_Usage#PCI_Host_Bridge The status block is in host memory (CPU memory). This memory is allocated by the driver. The DMA address of the status block is then programmed into the NIC register HOSTCC_STATUS_BLK_HOST_ADDR so that the NIC knows where to DMA the status block. When there is an event, the NIC DMAs a new status block and then generates IRQ. The status block is not in PCI memory. PCI memory is where the registers are mapped. Hope this helps. -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
