[LinuxBIOS] r2602 - trunk/LinuxBIOSv2/util/getpir

Author: stepan
Date: 2007-04-11 20:44:42 +0200 (Wed, 11 Apr 2007)
New Revision: 2602

Added:
   trunk/LinuxBIOSv2/util/getpir/code_gen.h
   trunk/LinuxBIOSv2/util/getpir/pirq_routing.h
Modified:
   trunk/LinuxBIOSv2/util/getpir/Makefile
   trunk/LinuxBIOSv2/util/getpir/checkpir.c
   trunk/LinuxBIOSv2/util/getpir/checksum.c
   trunk/LinuxBIOSv2/util/getpir/checksum.h
   trunk/LinuxBIOSv2/util/getpir/code_gen.c
   trunk/LinuxBIOSv2/util/getpir/getpir.c
Log:
Jeremy Jackson wrote:
I'm guessing nobody has tried compiling it with 64bit userspace?

Patch makes it compile cleanly and stops a "SEGV instead of working"
issue.

I also added a few checks for errors on system calls.

Signed-off-by: Jeremy Jackson

Reworked and
Acked-by: Stefan Reinauer

Modified: trunk/LinuxBIOSv2/util/getpir/Makefile
===================================================================
--- trunk/LinuxBIOSv2/util/getpir/Makefile	2007-04-09 22:59:22 UTC (rev 2601)
+++ trunk/LinuxBIOSv2/util/getpir/Makefile	2007-04-11 18:44:42 UTC (rev 2602)
@@ -1,33 +1,25 @@
-# change to the path of your linuxbios tree
-#LINUXBIOSROOT=/home/rminnich/src//freebios/
-LINUXBIOSROOT=../..
+#
+#
+#

-INCLUDEPATH=$(LINUXBIOSROOT)/src/arch/i386/include
-INCLUDE2=$(LINUXBIOSROOT)/src/include
+CC=gcc
+CFLAGS=-O2 -D_GNU_SOURCE -DGETPIR -Wall

-getpir: getpir.c checksum.o code_gen.o
-	gcc -o getpir -I$(INCLUDEPATH) -I$(INCLUDE2) getpir.c checksum.o code_gen.o
-
-code_gen.o: code_gen.c
-	gcc -c -I$(INCLUDEPATH) -I$(INCLUDE2) code_gen.c
-
 all: getpir checkpir
+	./checkpir

+getpir: getpir.o checksum.o code_gen.o
+	$(CC) $(CFLAGS) -o getpir $^
+
 checkpir: checkpir.c checksum.o irq_tables.o
-	gcc -o checkpir -I$(INCLUDEPATH) -I$(INCLUDE2) irq_tables.o checksum.o checkpir.c
+	$(CC) $(CFLAGS) -o checkpir $^

-checksum.o: checksum.c
-	gcc -c -I$(INCLUDEPATH) -I$(INCLUDE2) checksum.c 
+irq_tables.c: getpir
+	./getpir

-irq_tables.o: irq_tables.c  
-	gcc -c -I$(INCLUDEPATH) -I$(INCLUDE2) irq_tables.c
-
 clean:
    rm -f getpir checkpir *.o *~

-cleantable:
-	rm -f irq_table.o
+distclean: clean
+	rm -f irq_tables.o irq_tables.c

-test:   checkpir
-	./checkpir ;\
-	exit 0;

Modified: trunk/LinuxBIOSv2/util/getpir/checkpir.c
===================================================================
--- trunk/LinuxBIOSv2/util/getpir/checkpir.c	2007-04-09 22:59:22 UTC (rev 2601)
+++ trunk/LinuxBIOSv2/util/getpir/checkpir.c	2007-04-11 18:44:42 UTC (rev 2602)
@@ -1,16 +1,15 @@
 /* checkpir.c : This software is released under GPL
-   For Linuxbios use only
-   Aug 26 2001 , Nikolai Vladychevski, 
-*/
+ * For LinuxBIOS use only
+ * Aug 26 2001 , Nikolai Vladychevski, 
+ */

#include <stdio.h>
-#include <arch/pirq_routing.h>
-
+#include "pirq_routing.h"
 #include "checksum.h"

struct irq_routing_table *rt;

-main()
+int main(void)
 {
    uint8_t sum, newsum;

@@ -21,11 +20,12 @@
    printf("(no other tests are done)\n");

if (!sum) {
-		printf("Checksum for IRQ Routing table is ok. You can use it in LinuxBios now\n");
+		printf("Checksum for IRQ Routing table is ok. You can use irq_tables.c in LinuxBIOS now.\n");
    } else {
    	newsum = rt->checksum - sum;
    	printf("BAD CHECKSUM for IRQ Routing table !!!!\n");
    	printf("If you want to make it valid, change the checksum to: %#x\n",
    	       newsum);
    }
+	return 0;
 }

Modified: trunk/LinuxBIOSv2/util/getpir/checksum.c
===================================================================
--- trunk/LinuxBIOSv2/util/getpir/checksum.c	2007-04-09 22:59:22 UTC (rev 2601)
+++ trunk/LinuxBIOSv2/util/getpir/checksum.c	2007-04-11 18:44:42 UTC (rev 2602)
@@ -1,5 +1,4 @@
-#include <arch/pirq_routing.h>
-
+#include "pirq_routing.h"
 #include "checksum.h"

int calc_checksum(struct irq_routing_table *rt)

Modified: trunk/LinuxBIOSv2/util/getpir/checksum.h
===================================================================
--- trunk/LinuxBIOSv2/util/getpir/checksum.h	2007-04-09 22:59:22 UTC (rev 2601)
+++ trunk/LinuxBIOSv2/util/getpir/checksum.h	2007-04-11 18:44:42 UTC (rev 2602)
@@ -1,6 +1,6 @@
 #ifndef __CHECKSUM_H__
 #define __CHECKSUM_H__

-extern int calc_checksum(struct irq_routing_table *rt);
+int calc_checksum(struct irq_routing_table *rt);

-#endif /* __CHECKSUN_H__ */
+#endif /* __CHECKSUM_H__ */

Modified: trunk/LinuxBIOSv2/util/getpir/code_gen.c
===================================================================
--- trunk/LinuxBIOSv2/util/getpir/code_gen.c	2007-04-09 22:59:22 UTC (rev 2601)
+++ trunk/LinuxBIOSv2/util/getpir/code_gen.c	2007-04-11 18:44:42 UTC (rev 2602)
@@ -1,12 +1,17 @@
 #include <stdio.h>
-#include <arch/pirq_routing.h>
+#include <stdlib.h>
+#include "pirq_routing.h"

static char *preamble[] = {
    "/* This file was generated by getpir.c, do not modify! \n   (but if you do, please run checkpir on it to verify)\n",
    " * Contains the IRQ Routing Table dumped directly from your memory, which BIOS sets up\n",
    " *\n",
    " * Documentation at : http://www.microsoft.com/hwdev/busbios/PCIIRQ.HTM%5Cn*/%5Cn%5Cn",
-	"#include <arch/pirq_routing.h>\n\n",
+	"#ifdef GETPIR\n",
+	"#include "pirq_routing.h"\n",
+	"#else\n"
+	"#include <arch/pirq_routing.h>\n",
+	"#endif\n\n"
    "const struct irq_routing_table intel_irq_routing_table = {\n",
    "\tPIRQ_SIGNATURE,  /* u32 signature */\n",
    "\tPIRQ_VERSION,    /* u16 version   */\n",

Added: trunk/LinuxBIOSv2/util/getpir/code_gen.h
===================================================================
--- trunk/LinuxBIOSv2/util/getpir/code_gen.h	                        (rev 0)
+++ trunk/LinuxBIOSv2/util/getpir/code_gen.h	2007-04-11 18:44:42 UTC (rev 2602)
@@ -0,0 +1,6 @@
+#ifndef __CODE_GEN_H__
+#define __CODE_GEN_H__
+
+void code_gen(char *filename, struct irq_routing_table *rt);
+
+#endif /* __CODE_GEN_H__ */

Modified: trunk/LinuxBIOSv2/util/getpir/getpir.c
===================================================================
--- trunk/LinuxBIOSv2/util/getpir/getpir.c	2007-04-09 22:59:22 UTC (rev 2601)
+++ trunk/LinuxBIOSv2/util/getpir/getpir.c	2007-04-11 18:44:42 UTC (rev 2602)
@@ -1,14 +1,28 @@
 /* getpir.c : This software is released under GPL
-   For Linuxbios use only
-   Aug 26 2001 , Nikolai Vladychevski, 
-*/
+ * For LinuxBIOS use only
+ * Aug 26 2001 , Nikolai Vladychevski, 
+ * 2007.04.09 Jeremy Jackson 
+ *     updated for amd64 and general 64 bit portability
+ */

#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
 #include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>

-#include <arch/pirq_routing.h>
+#include "pirq_routing.h"
+#include "checksum.h"
+#include "code_gen.h"

-#define O_RDONLY 0x00
+#if defined (__sun) && (defined(__i386) || defined(__amd64))
+#  define MEM_DEV "/dev/xsvc"
+#else
+#  define MEM_DEV "/dev/mem"
+#endif

static struct irq_routing_table *probe_table(int fd_mem)
 {
@@ -18,40 +32,53 @@
    ptr =  mmap(0, 0x10000, PROT_READ, MAP_SHARED,
    	    fd_mem, (off_t) 0xf0000);

+	if (ptr == MAP_FAILED) {
+		perror("Mapping system memory failed: ");
+		exit(1);
+	}
+
    rt = (struct irq_routing_table *) memmem(ptr, 0xFFFF, signature, 4);

if (rt != NULL) {
-		printf("Found PCI IRQ Routing table signature at 0x%04x of system memory\n",
-		       (char *) rt - ptr + 0xf0000);
+		printf("Found PCI IRQ routing table signature at %p.\n",
+		       (void *)((char *)rt - ptr + 0xf0000));
    } else {
-		printf("No PCI IRQ Routing table signature in the memory\n");		
+		printf("No PCI IRQ routing table signature found.\n");
    	exit(1);
    }
    return rt;
 }

-main()
+int main(void)
 {
    int fd_mem;
    struct irq_routing_table *rt;

if (getuid()) {
-		perror("Run me as root, I need access to /dev/mem");
+		fprintf(stderr, "Run me as root, I need access to " MEM_DEV ".\n");
+	}
+
+	fd_mem = open(MEM_DEV, O_RDONLY);
+	if (fd_mem < 0) {
+		perror("Could not open " MEM_DEV ":");
    	exit(1);
    }
-	fd_mem = open("/dev/mem", O_RDONLY);

-	printf("Probing PIRQ table in memory\n");
+	printf("Probing PIRQ table in memory.\n");
    rt = probe_table(fd_mem);

-	printf("Validating..\n");
+	printf("Validating... ");
    if (!calc_checksum(rt))
-		printf("Checksum is ok!\n");
+		printf("checksum is ok.\n");
+	else
+		printf("checksum is wrong.\n");

-	printf("Creating irq_tables.c .....\n");
+	printf("Creating irq_tables.c ...\n");
    code_gen("irq_tables.c", rt);

close(fd_mem);

-	printf("Done, you can move the file to the LinuxBios tree now.\n");
+	printf("Done, you can move the file to the LinuxBIOS tree now.\n");
+
+	return 0;
 }

Added: trunk/LinuxBIOSv2/util/getpir/pirq_routing.h
===================================================================
--- trunk/LinuxBIOSv2/util/getpir/pirq_routing.h	                        (rev 0)
+++ trunk/LinuxBIOSv2/util/getpir/pirq_routing.h	2007-04-11 18:44:42 UTC (rev 2602)
@@ -0,0 +1,50 @@
+#ifndef ARCH_PIRQ_ROUTING_H
+#define ARCH_PIRQ_ROUTING_H
+
+#include <stdint.h>
+
+#define PIRQ_SIGNATURE	(('$' << 0) + ('P' << 8) + ('I' << 16) + ('R' << 24))
+#define PIRQ_VERSION 0x0100
+
+struct irq_info {
+	uint8_t bus, devfn;			/* Bus, device and function */
+	struct {
+		uint8_t link;			/* IRQ line ID, chipset dependent, 0=not routed */
+		uint16_t bitmap;		/* Available IRQs */
+	} __attribute__((packed)) irq[4];
+	uint8_t slot;				/* Slot number, 0=onboard */
+	uint8_t rfu;
+} __attribute__((packed));
+
+#if defined(IRQ_SLOT_COUNT)
+#define IRQ_SLOTS_COUNT IRQ_SLOT_COUNT
+#elif (__GNUC__ < 3)
+#define IRQ_SLOTS_COUNT 1
+#else
+#define IRQ_SLOTS_COUNT
+#endif
+
+struct irq_routing_table {
+	uint32_t signature;			/* PIRQ_SIGNATURE should be here */
+	uint16_t version;			/* PIRQ_VERSION */
+	uint16_t size;				/* Table size in bytes */
+	uint8_t  rtr_bus, rtr_devfn;		/* Where the interrupt router lies */
+	uint16_t exclusive_irqs;		/* IRQs devoted exclusively to PCI usage */
+	uint16_t rtr_vendor, rtr_device;	/* Vendor and device ID of interrupt router */
+	uint32_t miniport_data;			/* Crap */
+	uint8_t  rfu[11];
+	uint8_t  checksum;			/* Modulo 256 checksum must give zero */
+	struct irq_info slots[IRQ_SLOTS_COUNT];
+} __attribute__((packed));
+
+extern const struct irq_routing_table intel_irq_routing_table;
+
+#if HAVE_PIRQ_TABLE==1
+unsigned long copy_pirq_routing_table(unsigned long start);
+unsigned long write_pirq_routing_table(unsigned long start);
+#else
+#define copy_pirq_routing_table(start) (start)
+#define write_pirq_routing_table(start) (start)
+#endif
+
+#endif /* ARCH_PIRQ_ROUTING_H */