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Annotation of 43BSDTahoe/man/man4/tahoe/autoconf.4, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1986 Regents of the University of California.
        !             2: .\" All rights reserved.  The Berkeley software License Agreement
        !             3: .\" specifies the terms and conditions for redistribution.
        !             4: .\"
        !             5: .\"    @(#)autoconf.4  6.2 (Berkeley) 6/30/87
        !             6: .\"
        !             7: .TH AUTOCONF 4 "June 30, 1987"
        !             8: .UC 7
        !             9: .SH NAME
        !            10: autoconf \- diagnostics from autoconfiguration code
        !            11: .SH DESCRIPTION
        !            12: When UNIX bootstraps it probes the innards of the machine it is running
        !            13: on and locates controllers, drives, and other devices, printing out
        !            14: what it finds on the console.  This procedure is driven by a system
        !            15: configuration table which is processed by
        !            16: .IR config (8)
        !            17: and compiled into each kernel.
        !            18: .PP
        !            19: VERSAbus devices are located by probing to see if their control-status
        !            20: registers respond.  If not, they are silently ignored.  If the control
        !            21: status register responds but the device cannot be made to interrupt,
        !            22: a diagnostic warning will be printed on the console and the device
        !            23: will not be available to the system.
        !            24: .PP
        !            25: A generic system may be built which picks its root device at boot time
        !            26: as the ``best'' available device.
        !            27: If such a system is booted with the RB_ASKNAME option of (see
        !            28: .IR reboot (2v)),
        !            29: then the name of the root device is read from the console terminal at boot
        !            30: time, and any available device may be used.
        !            31: .SH SEE ALSO
        !            32: config(8)
        !            33: .SH DIAGNOSTICS
        !            34: \fBvba%d at %x\fR.  A VERSAbus adapter was found and mapped into the
        !            35: address space of the operating system starting at virtual address %x.
        !            36: UNIX will call it vba%d.
        !            37: .PP
        !            38: \fB%s%d at vba%d drive %d\fR.  A tape formatter or a disk was found
        !            39: on the VERSAbus; for disks %s%d will look like ``dk0'', for tape formatters
        !            40: like ``yc1''.  The drive number comes from the unit plug on the drive
        !            41: or in the tape formatter (\fBnot\fR on the tape drive; see below).
        !            42: .PP
        !            43: \fB%s%d at %s%d slave %d\fR. 
        !            44: Which would look like ``yc0 at cy0 slave 0'',
        !            45: where \fByc0\fR is the name for the tape device and \fBcy0\fR is the name
        !            46: for the formatter.  A tape slave was found on the tape formatter at the
        !            47: indicated drive number (on the front of the tape drive).
        !            48: UNIX will call the device, e.g., \fBcy0\fR.
        !            49: .PP
        !            50: \fB%s%d at vba%d csr %x vec %x ipl %x\fR.  The device %s%d, e.g. vd0
        !            51: was found on vba%d at control-status register address %x and with
        !            52: device vector %x.  The device interrupted at priority level %x.
        !            53: .PP
        !            54: \fB%s%d at vba%d csr %x no interrupts\fR.  The device was found
        !            55: on vba%d at control-status register address %x; no
        !            56: interrupts were configured for the device.
        !            57: .PP
        !            58: \fB%s%d at vba%d csr %x didn't interrupt\fR.  The device did not interrupt,
        !            59: likely because it is broken, hung, or not the kind of device it is advertised
        !            60: to be.  The csr address is interpreted as described above.
        !            61: .PP
        !            62: \fB%s%d at %s%d slave %d\fR.
        !            63: Which would look like ``dk0 at vd0 slave 0'',
        !            64: where \fBdk0\fR is the name of a disk drive and \fBvd0\fR is the name
        !            65: of the controller. 
        !            66: .SH BUGS
        !            67: Very few devices actually figure out their interrupt vector
        !            68: by forcing the device to interrupt.  Only the upper megabyte of the
        !            69: VERSAbus address space is mapped into the system's virtual address space.

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