From 4509619557e06ff851f93ddf1eaca7a898d46b2f Mon Sep 17 00:00:00 2001
From: Joshua Wise <joshua@rebirth.joshuawise.com>
Date: Sat, 13 Sep 2008 19:58:51 -0400
Subject: [PATCH] Add pci utility

---
 tools/Makefile |  6 ++++-
 tools/pci.c    | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 77 insertions(+), 1 deletion(-)
 create mode 100644 tools/pci.c

diff --git a/tools/Makefile b/tools/Makefile
index 7402d79..c53fd4a 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -1,8 +1,9 @@
 CFLAGS=-I../include
 CC=gcc
 SMRAM_ICH2_OBJS=smram-linux-tool.o ../pci/pci-linux.o ../ich2/smram-ich2.noraw.o
+PCI_OBJS=pci.o ../pci/pci-linux.o
 
-all: smram-ich2 port
+all: smram-ich2 port pci
 
 %.noraw.o: %.c
 	gcc $(CFLAGS) -c -o $@ $<
@@ -13,5 +14,8 @@ smram-ich2: $(SMRAM_ICH2_OBJS)
 port: port.o
 	gcc -o port port.o
 
+pci: $(PCI_OBJS)
+	gcc $(CFLAGS) -o pci $(PCI_OBJS)
+
 clean:
 	rm -f $(SMRAM_ICH2_OBJS) smram-ich2
diff --git a/tools/pci.c b/tools/pci.c
new file mode 100644
index 0000000..abfb8a5
--- /dev/null
+++ b/tools/pci.c
@@ -0,0 +1,72 @@
+#include <pci.h>
+#include <string.h>
+
+int main(int argc, char **argv)
+{
+	unsigned int bus, dev, fn, addr;
+	unsigned char type = 'b';
+	unsigned int datum;
+	
+	if (iopl(3) < 0)
+	{
+		perror("iopl");
+		return 1;
+	}
+	
+	if ((argc < 5) || (argc > 7))
+	{
+	usage:
+		printf("usage: %s bus dev fn addr [b|w|l [datum]]\n", argv[0]);
+		return 2;
+	}
+	
+	bus = strtoul(argv[1], NULL, 0);
+	dev = strtoul(argv[2], NULL, 0);
+	fn = strtoul(argv[3], NULL, 0);
+	addr = strtoul(argv[4], NULL, 0);
+	
+	if (argc > 5)
+		type = *argv[5];
+	
+	if (argc > 6)
+	{
+		datum = strtoul(argv[6], NULL, 0);
+		switch (type)
+		{
+		case 'b':
+			datum &= 0xFF;
+			pci_write8(bus, dev, fn, addr, datum);
+			printf("Wrote byte 0x%02x to %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
+			break;
+		case 'w':
+			datum &= 0xFFFF;
+			pci_write16(bus, dev, fn, addr, datum);
+			printf("Wrote word 0x%04x to %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
+			break;
+		case 'l':
+			pci_write32(bus, dev, fn, addr, datum);
+			printf("Wrote long 0x%08x to %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
+			break;
+		default:
+			goto usage;
+		}
+	} else {
+		switch(type)
+		{
+		case 'b':
+			datum = pci_read8(bus, dev, fn, addr);
+			printf("Read byte 0x%02x from %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
+			break;
+		case 'w':
+			datum = pci_read16(bus, dev, fn, addr);
+			printf("Read word 0x%04x from %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
+			break;
+		case 'l':
+			datum = pci_read32(bus, dev, fn, addr);
+			printf("Read long 0x%08x from %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
+			break;
+		default:
+			goto usage;
+		}
+	}
+}
-- 
2.43.0