Debugging Memory Mapped Devices
lspci (setpci)
print (set config) of pci devices
cat /dev/iomem
see all the memory mapped regions
cat /dev/mem |dd bs=1 skip=$((0xBCA01000)) count=$((0x10000)) | hexdump -C
print the mapped memory region (since dd doesnt use mmap, we use cat to read and dd to skip)