mirror of
https://github.com/freebsd/freebsd-src
synced 2024-09-24 10:44:53 +00:00
b1bf661000
Major changes to the generic device framework for FreeBSD/alpha: * Eliminate bus_t and make it possible for all devices to have attached children. * Support dynamically extendable interfaces for drivers to replace both the function pointers in driver_t and bus_ops_t (which has been removed entirely. Two system defined interfaces have been defined, 'device' which is mandatory for all devices and 'bus' which is recommended for all devices which support attached children. * In addition, the alpha port defines two simple interfaces 'clock' for attaching various real time clocks to the system and 'mcclock' for the many different variations of mc146818 clocks which can be attached to different alpha platforms. This eliminates two more function pointer tables in favour of the generic method dispatch system provided by the device framework. Future device interfaces may include: * cdev and bdev interfaces for devfs to use in replacement for specfs and the fixed interfaces bdevsw and cdevsw. * scsi interface to replace struct scsi_adapter (not sure how this works in CAM but I imagine there is something similar there). * various tailored interfaces for different bus types such as pci, isa, pccard etc.
233 lines
6.3 KiB
Bash
233 lines
6.3 KiB
Bash
#!/bin/sh -
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#
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# Copyright (c) 1992, 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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# From @(#)vnode_if.sh 8.1 (Berkeley) 6/10/93
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# $Id$
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#
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# Script to produce device front-end sugar.
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#
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# usage: makedevops.sh srcfile
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#
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# These awk scripts are not particularly well written, specifically they
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# don't use arrays well and figure out the same information repeatedly.
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# Please rewrite them if you actually understand how to use awk. Note,
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# they use nawk extensions and gawk's toupper.
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if [ $# -ne 2 ] ; then
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echo 'usage: makedevops.sh [-c|-h] srcfile'
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exit 1
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fi
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makec=0
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makeh=0
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if [ "$1" = "-c" ]; then
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makec=1
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fi
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if [ "$1" = "-h" ]; then
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makeh=1
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fi
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# Name of the source file.
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SRC=$2
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# Names of the created files.
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CTMP=ctmp$$
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HTMP=htmp$$
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CFILE=`basename $SRC .m`.c
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HFILE=`basename $SRC .m`.h
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# Awk program (must support nawk extensions and gawk's "toupper")
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# Use "awk" at Berkeley, "gawk" elsewhere.
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AWK=awk
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# Awk script to take file.do and turn it into file.h and file.c
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$AWK "
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BEGIN {
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src = \"$SRC\";
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header = \"$HTMP\";
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cfile = \"$CTMP\";
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hfile = \"$HFILE\";
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"'
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printf("/*\n") > header;
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printf(" * This file is produced automatically.\n") > header;
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printf(" * Do not modify anything in here by hand.\n") > header;
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printf(" *\n") > header;
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printf(" * Created from %s with makedevops.sh\n", src) > header;
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printf(" */\n\n") > header;
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printf("/*\n") > cfile;
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printf(" * This file is produced automatically.\n") > cfile;
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printf(" * Do not modify anything in here by hand.\n") > cfile;
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printf(" *\n") > cfile;
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printf(" * Created from %s with makedevops.sh\n", src) > cfile;
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printf(" */\n\n") > cfile;
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printf("#include <sys/param.h>\n") > cfile;
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printf("#include <sys/queue.h>\n") > cfile;
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printf("#include <sys/bus_private.h>\n") > cfile;
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methodcount = 0
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}
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NF == 0 {
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next;
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}
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/^#include/ {
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print $0 > cfile;
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}
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/^#/ {
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next;
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}
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/^INTERFACE/ {
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intname = $2;
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printf("#ifndef _%s_if_h_\n", intname) > header;
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printf("#define _%s_if_h_\n\n", intname) > header;
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printf("#include \"%s\"\n\n", hfile) > cfile;
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}
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/^METHOD/ {
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# Get the function name and return type.
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ret = "";
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sep = "";
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for (i = 2; i < NF - 1; i++) {
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ret = sep $i;
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sep = " ";
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}
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name = $i;
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# Get the function arguments.
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for (c1 = 0;; ++c1) {
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if (getline <= 0)
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exit
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if ($0 ~ "^};")
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break;
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a[c1] = $0;
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}
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methods[methodcount++] = name;
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mname = intname "_" name;
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umname = toupper(mname);
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# Print out the method declaration
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printf("extern struct device_op_desc %s_desc;\n", mname) > header;
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printf("%s %s(", ret, umname) > header;
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sep = ", ";
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for (c2 = 0; c2 < c1; ++c2) {
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if (c2 == c1 - 1)
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sep = " );\n";
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c3 = split(a[c2], t);
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for (c4 = 0; c4 < c3; ++c4)
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printf("%s ", t[c4]) > header;
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beg = match(t[c3], "[^*]");
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end = match(t[c3], ";");
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printf("%s%s%s",
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substr(t[c4], 0, beg - 1),
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substr(t[c4], beg, end - beg), sep) > header;
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}
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# Print the method desc
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printf("struct device_op_desc %s_desc = {\n", mname) > cfile;
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printf("\t0,\n") > cfile;
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printf("\t\"%s\"\n", name) > cfile;
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printf("};\n\n") > cfile;
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# Print out the method typedef
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printf("typedef %s %s_t(\n", ret, mname) > cfile;
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sep = ",\n";
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for (c2 = 0; c2 < c1; ++c2) {
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if (c2 == c1 - 1)
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sep = ");\n";
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c3 = split(a[c2], t);
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printf("\t") > cfile;
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for (c4 = 0; c4 < c3; ++c4)
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printf("%s ", t[c4]) > cfile;
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beg = match(t[c3], "[^*]");
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end = match(t[c3], ";");
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printf("%s%s%s",
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substr(t[c4], 0, beg - 1),
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substr(t[c4], beg, end - beg), sep) > cfile;
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}
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# Print out the method itself
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printf("%s %s(\n", ret, umname) > cfile;
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sep = ",\n";
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for (c2 = 0; c2 < c1; ++c2) {
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if (c2 == c1 - 1)
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sep = ")\n";
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c3 = split(a[c2], t);
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printf("\t") > cfile;
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for (c4 = 0; c4 < c3; ++c4)
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printf("%s ", t[c4]) > cfile;
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beg = match(t[c3], "[^*]");
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end = match(t[c3], ";");
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printf("%s%s%s",
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substr(t[c4], 0, beg - 1),
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substr(t[c4], beg, end - beg), sep) > cfile;
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}
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printf("{\n") > cfile;
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printf("\t%s_t *m = (%s_t *) DEVOPMETH(dev, %s);\n",
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mname, mname, mname) > cfile;
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if (ret != "void")
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printf("\treturn m(") > cfile;
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else
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printf("\tm(") > cfile;
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sep = ", ";
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for (c2 = 0; c2 < c1; ++c2) {
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if (c2 == c1 - 1)
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sep = ");\n";
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c3 = split(a[c2], t);
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beg = match(t[c3], "[^*]");
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end = match(t[c3], ";");
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printf("%s%s", substr(t[c3], beg, end - beg), sep) > cfile;
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}
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printf("}\n\n") > cfile;
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}
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END {
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printf("\n#endif /* _%s_if_h_ */\n", intname) > header;
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}' < $SRC
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if [ $makec = 1 ]; then
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mv $CTMP $CFILE
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else
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rm $CTMP
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fi
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if [ $makeh = 1 ]; then
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mv $HTMP $HFILE
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else
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rm $HTMP
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fi
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