C++ (Cpp) PCI_CONF2_ADDRESS Examples

Example #1

File: pci-pc.c Project: Rick33/freevms

static int pci_conf2_write (int seg, int bus, int dev, int fn, int reg, int len, u32 value)
{
	unsigned long flags;

	if ((bus > 255) || (dev > 31) || (fn > 7) || (reg > 255)) 
		return -EINVAL;

	if (dev & 0x10) 
		return PCIBIOS_DEVICE_NOT_FOUND;

	spin_lock_irqsave(&pci_config_lock, flags);

	outb((u8)(0xF0 | (fn << 1)), 0xCF8);
	outb((u8)bus, 0xCFA);

	switch (len) {
	case 1:
		outb ((u8)value, PCI_CONF2_ADDRESS(dev, reg));
		break;
	case 2:
		outw ((u16)value, PCI_CONF2_ADDRESS(dev, reg));
		break;
	case 4:
		outl ((u32)value, PCI_CONF2_ADDRESS(dev, reg));
		break;
	}

	outb (0, 0xCF8);    

	spin_unlock_irqrestore(&pci_config_lock, flags);

	return 0;
}

Example #2

File: pci-pc.c Project: dduval/kernel-rhel3

static int pci_conf2_read (int seg, int bus, int dev, int fn, int reg, int len, u32 *value)
{
	unsigned long flags;

	if (bus > 255 || dev > 31 || fn > 7 || reg > 255)
		return -EINVAL;

	if (dev & 0x10) 
		return PCIBIOS_DEVICE_NOT_FOUND;

	spin_lock_irqsave(&pci_config_lock, flags);

	outb((u8)(0xF0 | (fn << 1)), 0xCF8);
	outb((u8)bus, 0xCFA);

	switch (len) {
	case 1:
		*value = inb(PCI_CONF2_ADDRESS(dev, reg));
		break;
	case 2:
		*value = inw(PCI_CONF2_ADDRESS(dev, reg));
		break;
	case 4:
		*value = inl(PCI_CONF2_ADDRESS(dev, reg));
		break;
	}

	outb (0, 0xCF8);

	spin_unlock_irqrestore(&pci_config_lock, flags);

	return 0;
}

Example #3

File: direct.c Project: AlexShiLucky/linux

static int pci_conf2_read(unsigned int seg, unsigned int bus,
			  unsigned int devfn, int reg, int len, u32 *value)
{
	unsigned long flags;
	int dev, fn;

	WARN_ON(seg);
	if ((bus > 255) || (devfn > 255) || (reg > 255)) {
		*value = -1;
		return -EINVAL;
	}

	dev = PCI_SLOT(devfn);
	fn = PCI_FUNC(devfn);

	if (dev & 0x10) 
		return PCIBIOS_DEVICE_NOT_FOUND;

	raw_spin_lock_irqsave(&pci_config_lock, flags);

	outb((u8)(0xF0 | (fn << 1)), 0xCF8);
	outb((u8)bus, 0xCFA);

	switch (len) {
	case 1:
		*value = inb(PCI_CONF2_ADDRESS(dev, reg));
		break;
	case 2:
		*value = inw(PCI_CONF2_ADDRESS(dev, reg));
		break;
	case 4:
		*value = inl(PCI_CONF2_ADDRESS(dev, reg));
		break;
	}

	outb(0, 0xCF8);

	raw_spin_unlock_irqrestore(&pci_config_lock, flags);

	return 0;
}