Initial version of the user land code for the PCI config register

access functions. Written by Garrett Wollman and modified by me to
better match my view of the (PCI) world.

Submitted by:	wollman

usr.sbin/pciconf/Makefile

@@ -0,0 +1,8 @@
+#	$ANA: Makefile,v 1.1.1.1 1996/09/25 21:12:57 wollman Exp $
+
+PROG=	pciconf
+NOMAN=
+
+CFLAGS+=	-I/sys
+
+.include <bsd.prog.mk>

usr.sbin/pciconf/pathnames.h

@@ -0,0 +1 @@
+#define	_PATH_DEVPCI	"/dev/pci"

usr.sbin/pciconf/pciconf.c

@@ -0,0 +1,204 @@
+/*
+ * Copyright 1996 Massachusetts Institute of Technology
+ *
+ * Permission to use, copy, modify, and distribute this software and
+ * its documentation for any purpose and without fee is hereby
+ * granted, provided that both the above copyright notice and this
+ * permission notice appear in all copies, that both the above
+ * copyright notice and this permission notice appear in all
+ * supporting documentation, and that the name of M.I.T. not be used
+ * in advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.  M.I.T. makes
+ * no representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied
+ * warranty.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''.  M.I.T. DISCLAIMS
+ * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
+ * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$ANA: pciconf.c,v 1.1.1.1 1996/09/25 21:12:57 wollman Exp $
+ */
+
+#include <sys/types.h>
+#include <sys/fcntl.h>
+
+#include <err.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <pci/pcivar.h>
+#include <pci/pci_ioctl.h>
+
+#include "pathnames.h"
+
+static void list_devs(void);
+static void readit(const char *, const char *, int);
+static void writeit(const char *, const char *, const char *, int);
+
+
+static void
+usage(const char *argv0) {
+	fprintf(stderr, "usage:\n\t%s -l\n"
+		"\t%s [-r|-w] [-bh] sel addr [value]\n",
+		argv0, argv0);
+}
+
+int
+main(int argc, char **argv)
+{
+	int c;
+	int listmode, readmode, writemode;
+	int byte, isshort;
+
+	listmode = readmode = writemode = byte = isshort = 0;
+
+	while ((c = getopt(argc, argv, "lrwbh")) != EOF) {
+		switch(c) {
+		case 'l':
+			listmode = 1;
+			break;
+
+		case 'r':
+			readmode = 1;
+			break;
+			
+		case 'w':
+			writemode = 1;
+			break;
+
+		case 'b':
+			byte = 1;
+			break;
+
+		case 'h':
+			isshort = 1;
+			break;
+
+		default:
+			usage(argv[0]);
+		}
+	}
+
+	if ((listmode && optind != argc)
+	    || (writemode && optind + 3 != argc)
+	    || (readmode && optind + 2 != argc))
+		usage(argv[0]);
+
+	if (listmode) {
+		list_devs();
+	} else if(readmode) {
+		readit(argv[optind], argv[optind + 1], 
+		       byte ? 1 : isshort ? 2 : 4);
+	} else if(writemode) {
+		writeit(argv[optind], argv[optind + 1], argv[optind + 2],
+		       byte ? 1 : isshort ? 2 : 4);
+	} else {
+ 		usage(argv[0]);
+	}
+
+	return 0;
+}
+
+static void
+list_devs(void)
+{
+	int fd;
+	struct pci_conf_io pc;
+	struct pci_conf conf[255], *p;
+
+	fd = open(_PATH_DEVPCI, O_RDONLY, 0);
+	if (fd < 0)
+		err(1, "%s", _PATH_DEVPCI);
+
+	pc.pci_len = sizeof(conf);
+	pc.pci_buf = conf;
+
+	if (ioctl(fd, PCIOCGETCONF, &pc) < 0)
+		err(1, "ioctl(PCIOCGETCONF)");
+
+	close(fd);
+
+	for (p = conf; p < &conf[pc.pci_len / sizeof conf[0]]; p++) {
+	    printf("pci%d:%d:%d:\tclass=0x%06x card=0x%08lx chip=0x%08lx rev=0x%02x\n",
+		   p->pc_sel.pc_bus, p->pc_sel.pc_dev, p->pc_sel.pc_func, 
+		   p->pc_class >> 8, p->pc_subid,
+		   p->pc_devid, p->pc_class & 0xff);
+	}
+}
+
+static struct pcisel
+getsel(const char *str)
+{
+	char *ep = (char*) str;
+	struct pcisel sel;
+	
+	if (strncmp(ep, "pci", 3) == 0) {
+		ep += 3;
+		sel.pc_bus = strtoul(ep, &ep, 0);
+		if (!ep || *ep++ != ':')
+			errx(1, "cannot parse selector %s", str);
+		sel.pc_dev = strtoul(ep, &ep, 0);
+		if (!ep || *ep != ':') {
+			sel.pc_func = 0;
+		} else {
+			ep++;
+			sel.pc_func = strtoul(ep, &ep, 0);
+		}
+	}
+	if (*ep == ':')
+		ep++;
+	if (*ep || ep == str)
+		errx(1, "cannot parse selector %s", str);
+	return sel;
+}
+
+static void
+readit(const char *name, const char *reg, int width)
+{
+	int fd;
+	struct pci_io pi;
+
+	pi.pi_sel = getsel(name);
+	pi.pi_reg = strtoul(reg, (char **)0, 0); /* XXX error check */
+	pi.pi_width = width;
+
+	fd = open(_PATH_DEVPCI, O_RDWR, 0);
+	if (fd < 0)
+		err(1, "%s", _PATH_DEVPCI);
+
+	if (ioctl(fd, PCIOCREAD, &pi) < 0)
+		err(1, "ioctl(PCIOCREAD)");
+
+	printf("0x%08x\n", pi.pi_data);
+}
+
+static void
+writeit(const char *name, const char *reg, const char *data, int width)
+{
+	int fd;
+	struct pci_io pi;
+
+	pi.pi_sel = getsel(name);
+	pi.pi_reg = strtoul(reg, (char **)0, 0); /* XXX error check */
+	pi.pi_width = width;
+	pi.pi_data = strtoul(data, (char **)0, 0); /* XXX error check */
+
+	fd = open(_PATH_DEVPCI, O_RDWR, 0);
+	if (fd < 0)
+		err(1, "%s", _PATH_DEVPCI);
+
+	if (ioctl(fd, PCIOCWRITE, &pi) < 0)
+		err(1, "ioctl(PCIOCWRITE)");
+}