2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 2000, 2001 Keith M Wesolowski
8 #include <linux/kernel.h>
9 #include <linux/init.h>
10 #include <linux/pci.h>
11 #include <linux/types.h>
13 #include <asm/ip32/mace.h>
16 # define DPRINTK(args...) printk(args);
18 # define DPRINTK(args...)
22 * O2 has up to 5 PCI devices connected into the MACE bridge. The device
23 * map looks like this:
32 #define chkslot(_bus,_devfn) \
34 if ((_bus)->number > 0 || PCI_SLOT (_devfn) < 1 \
35 || PCI_SLOT (_devfn) > 3) \
36 return PCIBIOS_DEVICE_NOT_FOUND; \
39 #define mkaddr(_devfn, _reg) \
40 ((((_devfn) & 0xffUL) << 8) | ((_reg) & 0xfcUL))
43 mace_pci_read_config(struct pci_bus *bus, unsigned int devfn,
44 int reg, int size, u32 *val)
47 mace->pci.config_addr = mkaddr(devfn, reg);
50 *val = mace->pci.config_data.b[(reg & 3) ^ 3];
53 *val = mace->pci.config_data.w[((reg >> 1) & 1) ^ 1];
56 *val = mace->pci.config_data.l;
60 DPRINTK("read%d: reg=%08x,val=%02x\n", size * 8, reg, *val);
62 return PCIBIOS_SUCCESSFUL;
66 mace_pci_write_config(struct pci_bus *bus, unsigned int devfn,
67 int reg, int size, u32 val)
70 mace->pci.config_addr = mkaddr(devfn, reg);
73 mace->pci.config_data.b[(reg & 3) ^ 3] = val;
76 mace->pci.config_data.w[((reg >> 1) & 1) ^ 1] = val;
79 mace->pci.config_data.l = val;
83 DPRINTK("write%d: reg=%08x,val=%02x\n", size * 8, reg, val);
85 return PCIBIOS_SUCCESSFUL;
88 struct pci_ops mace_pci_ops = {
89 .read = mace_pci_read_config,
90 .write = mace_pci_write_config,