1 /* getpir.c : This software is released under GPL
3 Aug 26 2001 , Nikolai Vladychevski, <niko@isl.net.mx>
9 #include <arch/pirq_routing.h>
13 static struct irq_routing_table *probe_table(int fd_mem)
15 char *ptr, signature[] = "$PIR";
16 struct irq_routing_table *rt;
18 ptr = mmap(0, 0x10000, PROT_READ, MAP_SHARED,
19 fd_mem, (off_t) 0xf0000);
21 rt = (struct irq_routing_table *) memmem(ptr, 0xFFFF, signature, 4);
24 printf("Found PCI IRQ Routing table signature at 0x%04x of system memory\n",
25 (char *) rt - ptr + 0xf0000);
27 printf("No PCI IRQ Routing table signature in the memory\n");
36 struct irq_routing_table *rt;
39 perror("Run me as root, I need access to /dev/mem");
42 fd_mem = open("/dev/mem", O_RDONLY);
44 printf("Probing PIRQ table in memory\n");
45 rt = probe_table(fd_mem);
47 printf("Validating..\n");
48 if (!calc_checksum(rt))
49 printf("Checksum is ok!\n");
51 printf("Creating irq_tables.c .....\n");
52 code_gen("irq_tables.c", rt);
56 printf("Done, you can move the file to the LinuxBios tree now.\n");