=> R0 = flags: bits 0-3 = access privileges (if bit 9 set)
bit 4 => bufferable
bit 5 => cacheable
bits 6-8 => policy (see OS_DynamicArea)
bit 9 => access privileges specified
bit 31 => don't map, query PCI address only
R1 = address index (0-5 correspond to first 6 Base Address Registers;
a device with 3 64-bit addresses would use indexes 0,2,4 only
&100 corresponds to ROM) other values reserved
R3 = function handle
<= R0 = flags bit 0 => IO if set, memory if clear
bit 3 => prefetchable
R1 = PCI address
R2 = area size
R4 = logical address (if R0 bit 31 clear)
Finds or defines how a PCI address maps into the logical memory map.
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