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- #include <linux/kernel.h>
- #include <linux/pci.h>
- #include <linux/interrupt.h>
- #include <linux/mm.h>
- #include <linux/init.h>
- #include <linux/ioport.h>
- #include <linux/io.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_root_bus(NULL, 0, &via82c505_ops, sysdata,
- &sysdata->resources);
- return NULL;
- }
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