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f71c01cc52
Use Warner Losh's "hint" driver to decode ascii strings to fill the resource table at boot time. config(8) no longer generates an ioconf.c table - ie: the configuration no longer has to be compiled into the kernel. You can reconfigure your isa devices with the likes of this at loader(8) time: set hint.ed.0.port=0x320 userconfig will be rewritten to use this style interface one day and will move to /boot/userconfig.4th or something like that. It is still possible to statically compile in a set of hints into a kernel if you do not wish to use loader(8). See the "hints" directive in GENERIC as an example. All device wiring has been moved out of config(8). There is a set of helper scripts (see i386/conf/gethints.pl, and the same for alpha and pc98) that extract the 'at isa? port foo irq bar' from the old files and produces a hints file. If you install this file as /boot/device.hints (and update /boot/defaults/loader.conf - You can do a build/install in sys/boot) then loader will load it automatically for you. You can also compile in the hints directly with: hints "device.hints" as well. There are a few things that I'm not too happy with yet. Under this scheme, things like LINT would no longer be useful as "documentation" of settings. I have renamed this file to 'NOTES' and stored the example hints strings in it. However... this is not something that config(8) understands, so there is a script that extracts the build-specific data from the documentation file (NOTES) to produce a LINT that can be config'ed and built. A stack of man4 pages will need updating. :-/ Also, since there is no longer a difference between 'device' and 'pseudo-device' I collapsed the two together, and the resulting 'device' takes a 'number of units' for devices that still have it statically allocated. eg: 'device fe 4' will compile the fe driver with NFE set to 4. You can then set hints for 4 units (0 - 3). Also note that 'device fe0' will be interpreted as "zero units of 'fe'" which would be bad, so there is a config warning for this. This is only needed for old drivers that still have static limits on numbers of units. All the statically limited drivers that I could find were marked. Please exercise EXTREME CAUTION when transitioning! Moral support by: phk, msmith, dfr, asmodai, imp, and others
215 lines
5.3 KiB
C
215 lines
5.3 KiB
C
/*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)mkheaders.c 8.1 (Berkeley) 6/6/93";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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/*
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* Make all the .h files for the optional entries
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*/
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#include <ctype.h>
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#include <err.h>
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#include <stdio.h>
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#include <string.h>
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#include "config.h"
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#include "y.tab.h"
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static void do_header(char *, int);
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static void do_count(char *);
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static char *toheader(char *);
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static char *tomacro(char *);
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void
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headers(void)
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{
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struct file_list *fl;
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struct device *dp;
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for (fl = ftab; fl != 0; fl = fl->f_next) {
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if (fl->f_needs != 0) {
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for (dp = dtab; dp != 0; dp = dp->d_next) {
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if (eq(dp->d_name, fl->f_needs)) {
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if ((dp->d_type & TYPEMASK) == DEVICE)
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dp->d_type |= DEVDONE;
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}
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}
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if (fl->f_flags & NEED_COUNT)
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do_count(fl->f_needs);
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}
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}
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for (dp = dtab; dp != 0; dp = dp->d_next) {
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if ((dp->d_type & TYPEMASK) == DEVICE) {
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if (!(dp->d_type & DEVDONE))
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printf("Warning: device \"%s\" is unknown\n",
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dp->d_name);
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}
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}
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}
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/*
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* count all the devices of a certain type and recurse to count
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* whatever the device is connected to
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*/
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static void
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do_count(char *dev)
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{
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struct device *dp;
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int count, hicount;
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/*
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* After this loop, "count" will be the actual number of units,
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* and "hicount" will be the highest unit declared. do_header()
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* must use this higher of these values.
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*/
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for (hicount = count = 0, dp = dtab; dp != 0; dp = dp->d_next) {
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if (eq(dp->d_name, dev)) {
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count =
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dp->d_count != UNKNOWN ? dp->d_count : 1;
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break;
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}
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}
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do_header(dev, count);
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}
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static void
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do_header(char *dev, int count)
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{
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char *file, *name, *inw;
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struct file_list *fl, *fl_head, *tflp;
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FILE *inf, *outf;
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int inc, oldcount;
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file = toheader(dev);
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name = tomacro(dev);
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inf = fopen(file, "r");
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oldcount = -1;
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if (inf == 0) {
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outf = fopen(file, "w");
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if (outf == 0)
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err(1, "%s", file);
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fprintf(outf, "#define %s %d\n", name, count);
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(void) fclose(outf);
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return;
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}
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fl_head = NULL;
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for (;;) {
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char *cp;
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if ((inw = get_word(inf)) == 0 || inw == (char *)EOF)
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break;
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if ((inw = get_word(inf)) == 0 || inw == (char *)EOF)
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break;
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inw = ns(inw);
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cp = get_word(inf);
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if (cp == 0 || cp == (char *)EOF)
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break;
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inc = atoi(cp);
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if (eq(inw, name)) {
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oldcount = inc;
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inc = count;
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}
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cp = get_word(inf);
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if (cp == (char *)EOF)
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break;
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fl = (struct file_list *) malloc(sizeof *fl);
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bzero(fl, sizeof(*fl));
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fl->f_fn = inw; /* malloced */
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fl->f_type = inc;
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fl->f_next = fl_head;
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fl_head = fl;
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}
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(void) fclose(inf);
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if (count == oldcount) {
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for (fl = fl_head; fl != NULL; fl = tflp) {
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tflp = fl->f_next;
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free(fl->f_fn);
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free(fl);
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}
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return;
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}
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if (oldcount == -1) {
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fl = (struct file_list *) malloc(sizeof *fl);
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bzero(fl, sizeof(*fl));
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fl->f_fn = ns(name);
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fl->f_type = count;
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fl->f_next = fl_head;
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fl_head = fl;
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}
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outf = fopen(file, "w");
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if (outf == 0)
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err(1, "%s", file);
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for (fl = fl_head; fl != NULL; fl = tflp) {
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fprintf(outf,
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"#define %s %u\n", fl->f_fn, count ? fl->f_type : 0);
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tflp = fl->f_next;
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free(fl->f_fn);
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free(fl);
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}
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(void) fclose(outf);
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}
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/*
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* convert a dev name to a .h file name
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*/
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static char *
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toheader(char *dev)
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{
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static char hbuf[80];
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(void) strcpy(hbuf, path(dev));
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(void) strcat(hbuf, ".h");
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return (hbuf);
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}
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/*
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* convert a dev name to a macro name
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*/
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static char *
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tomacro(char *dev)
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{
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static char mbuf[20];
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char *cp;
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cp = mbuf;
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*cp++ = 'N';
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while (*dev)
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*cp++ = islower(*dev) ? toupper(*dev++) : *dev++;
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*cp++ = 0;
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return (mbuf);
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}
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