Beispiel #1
0
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;
}
Beispiel #2
0
__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;
}
Beispiel #3
0
__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;
}
Beispiel #4
0
__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;
}
Beispiel #5
0
__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;
}