#include <linux/config.h> #include <linux/kernel.h> #include <linux/pci.h> #include <linux/ptrace.h> #include <linux/interrupt.h> #include <linux/mm.h> #include <linux/init.h> #include <linux/ioport.h> #include <asm/io.h> #include <asm/system.h> #include <asm/mach/pci.h> #define MAX_SLOTS 7 #define CONFIG_CMD(bus, devfn, where) (0x80000000 | (bus->number << 16) | (devfn << 8) | (where & ~3)) static int via82c505_read_config(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value) { outl(CONFIG_CMD(bus,devfn,where),0xCF8); switch (size) { case 1: *value=inb(0xCFC + (where&3)); break; case 2: *value=inw(0xCFC + (where&2)); break; case 4: *value=inl(0xCFC); break; } return PCIBIOS_SUCCESSFUL; } static int via82c505_write_config(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value) { outl(CONFIG_CMD(bus,devfn,where),0xCF8); switch (size) { case 1: outb(value, 0xCFC + (where&3)); break; case 2: outw(value, 0xCFC + (where&2)); break; case 4: outl(value, 0xCFC); break; } return PCIBIOS_SUCCESSFUL; } static struct pci_ops via82c505_ops = { .read = via82c505_read_config, .write = via82c505_write_config, }; void __init via82c505_preinit(void) { printk(KERN_DEBUG "PCI: VIA 82c505\n"); if (!request_region(0xA8,2,"via config")) { printk(KERN_WARNING"VIA 82c505: Unable to request region 0xA8\n"); return; } if (!request_region(0xCF8,8,"pci config")) { printk(KERN_WARNING"VIA 82c505: Unable to request region 0xCF8\n"); release_region(0xA8, 2); return; } /* Enable compatible Mode */ outb(0x96,0xA8); outb(0x18,0xA9); outb(0x93,0xA8); outb(0xd0,0xA9); } int __init via82c505_setup(int nr, struct pci_sys_data *sys) { return (nr == 0); } struct pci_bus * __init via82c505_scan_bus(int nr, struct pci_sys_data *sysdata) { if (nr == 0) return pci_scan_bus(0, &via82c505_ops, sysdata); return NULL; }