static void __init ioc_init()

in hp/common/sba_iommu.c [1782:1826]

• 36 lines of code
• 6 McCabe index (conditional complexity)

static void __init ioc_init(unsigned long hpa, struct ioc *ioc)
{
	struct ioc_iommu *info;

	ioc->next = ioc_list;
	ioc_list = ioc;

	ioc->ioc_hpa = ioremap(hpa, 0x1000);

	ioc->func_id = READ_REG(ioc->ioc_hpa + IOC_FUNC_ID);
	ioc->rev = READ_REG(ioc->ioc_hpa + IOC_FCLASS) & 0xFFUL;
	ioc->dma_mask = 0xFFFFFFFFFFFFFFFFUL;	/* conservative */

	for (info = ioc_iommu_info; info < ioc_iommu_info + ARRAY_SIZE(ioc_iommu_info); info++) {
		if (ioc->func_id == info->func_id) {
			ioc->name = info->name;
			if (info->init)
				(info->init)(ioc);
		}
	}

	iovp_size = (1 << iovp_shift);
	iovp_mask = ~(iovp_size - 1);

	DBG_INIT("%s: PAGE_SIZE %ldK, iovp_size %ldK\n", __func__,
		PAGE_SIZE >> 10, iovp_size >> 10);

	if (!ioc->name) {
		ioc->name = kmalloc(24, GFP_KERNEL);
		if (ioc->name)
			sprintf((char *) ioc->name, "Unknown (%04x:%04x)",
				ioc->func_id & 0xFFFF, (ioc->func_id >> 16) & 0xFFFF);
		else
			ioc->name = "Unknown";
	}

	ioc_iova_init(ioc);
	ioc_resource_init(ioc);
	ioc_sac_init(ioc);

	printk(KERN_INFO PFX
		"%s %d.%d HPA 0x%lx IOVA space %dMb at 0x%lx\n",
		ioc->name, (ioc->rev >> 4) & 0xF, ioc->rev & 0xF,
		hpa, ioc->iov_size >> 20, ioc->ibase);
}