Defined in 2 files as a macro:

• sys/amd64/include/iodev.h, line 41 (as a macro)
• sys/arm64/include/iodev.h, line 62 (as a macro)

Referenced in 3 files:

• sys/compat/x86bios/x86bios.c, line 532
• sys/dev/acpica/Osd/OsdHardware.c, line 93
• sys/dev/io/iodev.c, line 180