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 bsdimp.com
Sat Mar 20 10:48:46 PST 2004
In message: <20040320085431.GA74398 at dhcp01.pn.xcllnt.net>
Marcel Moolenaar <marcel at xcllnt.net> 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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