Subversion Repositories or1k

#ifndef ASM_PCI_DIRECT_H

#define ASM_PCI_DIRECT_H 1

#include <linux/types.h>

#include <asm/io.h>

/* Direct PCI access. This is used for PCI accesses in early boot before

   the PCI subsystem works. */

#define PDprintk(x...)

static inline u32 read_pci_config(u8 bus, u8 slot, u8 func, u8 offset)

{

        u32 v;

        outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);

        v = inl(0xcfc);

        if (v != 0xffffffff)

                PDprintk("%x reading 4 from %x: %x\n", slot, offset, v);

        return v;

}

static inline u8 read_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset)

{

        u8 v;

        outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);

        v = inb(0xcfc + (offset&3));

        PDprintk("%x reading 1 from %x: %x\n", slot, offset, v);

        return v;

}

static inline u16 read_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset)

{

        u16 v;

        outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);

        v = inw(0xcfc + (offset&2));

        PDprintk("%x reading 2 from %x: %x\n", slot, offset, v);

        return v;

}

static inline void write_pci_config(u8 bus, u8 slot, u8 func, u8 offset,

                                    u32 val)

{

        PDprintk("%x writing to %x: %x\n", slot, offset, val);

        outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);

        outl(val, 0xcfc);

}

#endif