> I've read a few days ago that it was possible to emulate PCI device with
> 64-bit BARs and have a real 64-bit memory access.
> Thus, I've created a virtual device named toto accessible through a 64-bit
> BAR
You've probably confused an ability to locate BAR anywhere in 64-bit
address space (such BAR actually spans 2 consecutive PCI BAR registers
and has 100 in its 3 least significant bits) and an ability to access
BAR-mapped memory in 64 bit items.
You obviously want the latter but currently it is not implemented, see e.g.
static inline DATA_TYPE glue(io_read, SUFFIX)(target_phys_addr_t physaddr,
target_ulong addr,
void *retaddr)
definition in the softmmu_template.h.
And it's quite simple to fix it, you only need to change
io_{read,write} in the softmmu_template.h and extend
io_mem_{read,write} loops in exec.c to 4 elements, taking care that
io_mem_{read,write}[3] can pass uint64_t.
--
Thanks.
-- Max
