static int
prep_write_config(struct pci_bus *bus, unsigned int devfn, int offset,
int len, u32 val)
{
struct pci_controller *hose = bus->sysdata;
volatile void __iomem *cfg_data;
if (bus->number != 0 || DEVNO(devfn) < MIN_DEVNR
|| DEVNO(devfn) > MAX_DEVNR)
return PCIBIOS_DEVICE_NOT_FOUND;
/*
* Note: the caller has already checked that offset is
* suitably aligned and that len is 1, 2 or 4.
*/
cfg_data = hose->cfg_data + CFGADDR(devfn) + offset;
switch (len) {
case 1:
out_8(cfg_data, val);
break;
case 2:
out_le16(cfg_data, val);
break;
default:
out_le32(cfg_data, val);
break;
}
return PCIBIOS_SUCCESSFUL;
}
__prep
int
prep_pcibios_write_config_byte (unsigned char bus,
unsigned char dev, unsigned char offset, unsigned char val)
{
unsigned char _val;
unsigned char *ptr;
_val = val;
if ((bus != 0) || (DEVNO(dev) > MAX_DEVNR))
{
return PCIBIOS_DEVICE_NOT_FOUND;
} else
{
ptr = (unsigned char *)CFGPTR(dev);
*ptr = _val;
}
return PCIBIOS_SUCCESSFUL;
}
__prep
int
prep_pcibios_write_config_word (unsigned char bus,
unsigned char dev, unsigned char offset, unsigned short val)
{
unsigned short _val;
unsigned short *ptr;
_val = le16_to_cpu(val);
if ((bus != 0) || (DEVNO(dev) > MAX_DEVNR))
{
return PCIBIOS_DEVICE_NOT_FOUND;
} else
{
ptr = (unsigned short *)CFGPTR(dev);
*ptr = _val;
}
return PCIBIOS_SUCCESSFUL;
}
__prep
int
prep_pcibios_read_config_byte (unsigned char bus,
unsigned char dev, unsigned char offset, unsigned char *val)
{
unsigned char _val;
unsigned char *ptr;
if ((bus != 0) || (DEVNO(dev) > MAX_DEVNR))
{
*val = 0xFF;
return PCIBIOS_DEVICE_NOT_FOUND;
} else
{
ptr = (unsigned char *)CFGPTR(dev);
_val = *ptr;
}
*val = _val;
return PCIBIOS_SUCCESSFUL;
}
__prep
int
prep_pcibios_read_config_word (unsigned char bus,
unsigned char dev, unsigned char offset, unsigned short *val)
{
unsigned short _val;
unsigned short *ptr;
if ((bus != 0) || (DEVNO(dev) > MAX_DEVNR))
{
*val = 0xFFFF;
return PCIBIOS_DEVICE_NOT_FOUND;
} else
{
ptr = (unsigned short *)CFGPTR(dev);
_val = le16_to_cpu(*ptr);
}
*val = _val;
return PCIBIOS_SUCCESSFUL;
}