Hi,
I have an EFI driver for a PCI device which works fine when BAR is 32-bit
(below 4G), but on a setup with 64-bit BAR (above 4G BIOS option enabled) the
Mem.Read and MEm.Write functions of EFI_PCI_IO_PROTOCOL fail with
INVALID_PARAMETER error.
I tried to replace these functions with CopyMem() from/to the BAR memory
address + offset, the read works fine but the write fails most of the times.
What should be replaced to support 64-bit BAR (above 4G)?
Do I need to use the Map() and Unmap() functions?
I will appreciate any help or link to any reference.
Thanks,
Miri
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