2 * Copyright (C) ADMtek Incorporated.
3 * Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org)
6 #include <linux/autoconf.h>
7 #include <linux/types.h>
9 #include <linux/kernel.h>
10 #include <linux/init.h>
12 volatile u32* pci_config_address_reg = (volatile u32*)KSEG1ADDR(0x115ffff0);
13 volatile u32* pci_config_data_reg = (volatile u32*)KSEG1ADDR(0x115ffff8);
15 #define PCI_ENABLE 0x80000000
17 static int pci_config_read(struct pci_bus *bus, unsigned int devfn, int where,
18 int size, uint32_t *val)
20 *pci_config_address_reg = ((bus->number & 0xff) << 0x10) |
21 ((devfn & 0xff) << 0x08) | (where & 0xfc) | PCI_ENABLE;
24 *val = ((*pci_config_data_reg)>>((where&3)<<3))&0xff;
27 *val = ((*pci_config_data_reg)>>((where&3)<<3))&0xffff;
30 *val = (*pci_config_data_reg);
32 return PCIBIOS_SUCCESSFUL;
35 static int pci_config_write(struct pci_bus *bus, unsigned int devfn, int where,
36 int size, uint32_t val)
38 *pci_config_address_reg = ((bus->number & 0xff) << 0x10) |
39 ((devfn & 0xff) << 0x08) | (where & 0xfc) | PCI_ENABLE;
42 *(volatile u8 *)(((int)pci_config_data_reg) +
46 *(volatile u16 *)(((int)pci_config_data_reg) +
50 *pci_config_data_reg = (val);
53 return PCIBIOS_SUCCESSFUL;
56 struct pci_ops adm5120_pci_ops = {
57 .read = pci_config_read,
58 .write = pci_config_write,