pci-uclass.c

ulong pci_conv_size_to_32(ulong old, ulong value, uint offset,
			  enum pci_size_t size)
{
	uint off_mask;
	uint val_mask, shift;
	ulong ldata, mask;

	switch (size) {
	case PCI_SIZE_8:
		off_mask = 3;
		val_mask = 0xff;
		break;
	case PCI_SIZE_16:
		off_mask = 2;
		val_mask = 0xffff;
		break;
	default:
		return value;
	}
	shift = (offset & off_mask) * 8;
	ldata = (value & val_mask) << shift;
	mask = val_mask << shift;
	value = (old & ~mask) | ldata;

	return value;
}

int pci_get_regions(struct udevice *dev, struct pci_region **iop,
		    struct pci_region **memp, struct pci_region **prefp)
{
	struct udevice *bus = pci_get_controller(dev);
	struct pci_controller *hose = dev_get_uclass_priv(bus);
	int i;

	*iop = NULL;
	*memp = NULL;
	*prefp = NULL;
	for (i = 0; i < hose->region_count; i++) {
		switch (hose->regions[i].flags) {
		case PCI_REGION_IO:
			if (!*iop || (*iop)->size < hose->regions[i].size)
				*iop = hose->regions + i;
			break;
		case PCI_REGION_MEM:
			if (!*memp || (*memp)->size < hose->regions[i].size)
				*memp = hose->regions + i;
			break;
		case (PCI_REGION_MEM | PCI_REGION_PREFETCH):
			if (!*prefp || (*prefp)->size < hose->regions[i].size)
				*prefp = hose->regions + i;
			break;
		}
	}

	return (*iop != NULL) + (*memp != NULL) + (*prefp != NULL);
}

UCLASS_DRIVER(pci) = {
	.id		= UCLASS_PCI,
	.name		= "pci",
	.flags		= DM_UC_FLAG_SEQ_ALIAS,
	.post_bind	= pci_uclass_post_bind,
	.pre_probe	= pci_uclass_pre_probe,
	.post_probe	= pci_uclass_post_probe,
	.child_post_bind = pci_uclass_child_post_bind,
	.per_device_auto_alloc_size = sizeof(struct pci_controller),
	.per_child_platdata_auto_alloc_size =
			sizeof(struct pci_child_platdata),
};

static const struct dm_pci_ops pci_bridge_ops = {
	.read_config	= pci_bridge_read_config,
	.write_config	= pci_bridge_write_config,
};

static const struct udevice_id pci_bridge_ids[] = {
	{ .compatible = "pci-bridge" },
	{ }
};

U_BOOT_DRIVER(pci_bridge_drv) = {
	.name		= "pci_bridge_drv",
	.id		= UCLASS_PCI,
	.of_match	= pci_bridge_ids,
	.ops		= &pci_bridge_ops,
};

UCLASS_DRIVER(pci_generic) = {
	.id		= UCLASS_PCI_GENERIC,
	.name		= "pci_generic",
};

static const struct udevice_id pci_generic_ids[] = {
	{ .compatible = "pci-generic" },
	{ }
};

U_BOOT_DRIVER(pci_generic_drv) = {
	.name		= "pci_generic_drv",
	.id		= UCLASS_PCI_GENERIC,
	.of_match	= pci_generic_ids,
};