cvs commit: src/sys/conf files src/sys/dev/uart uart_cpu.h uart_cpu_alpha.c uart_cpu_amd64.c uart_cpu_i386.c uart_cpu_ia64.c uart_cpu_pc98.c uart_cpu_sparc64.c uart_subr.c

M. Warner Losh imp at
Sat Mar 20 10:48:46 PST 2004

In message: <20040320085431.GA74398 at>
            Marcel Moolenaar <marcel at> writes:
: Probe order is irrelevant if you specify the device by its I/O port
: or memory mapped I/O address.

Only for devices that have fixed addresses.  This wouldn't be true for
devices on the PCI bus, where probe order could affect the resources
assigned to a given device.  The only real way for self-enumearting
busses are a bus-specific address.

: When you need to pinpoint a device
: prior to any form of bus enumeration, the unit number is meaningless
: and any mechanism that includes a unit number is bogus. That's why
: hints are the wrong tool for pinpointing a console or debug port.



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