C++ (Cpp) iommu_set_intr_remapping Examples

Example #1

File: intr_remapping.c Project: KaZoom/buildroot-linux-kernel-m3

static int setup_intr_remapping(struct intel_iommu *iommu, int mode)
{
	struct ir_table *ir_table;
	struct page *pages;

	ir_table = iommu->ir_table = kzalloc(sizeof(struct ir_table),
					     GFP_ATOMIC);

	if (!iommu->ir_table)
		return -ENOMEM;

	pages = alloc_pages_node(iommu->node, GFP_ATOMIC | __GFP_ZERO,
				 INTR_REMAP_PAGE_ORDER);

	if (!pages) {
		printk(KERN_ERR "failed to allocate pages of order %d\n",
		       INTR_REMAP_PAGE_ORDER);
		kfree(iommu->ir_table);
		return -ENOMEM;
	}

	ir_table->base = page_address(pages);

	iommu_set_intr_remapping(iommu, mode);
	return 0;
}

Example #2

File: intr_remapping.c Project: KaZoom/buildroot-linux-kernel-m3

int reenable_intr_remapping(int eim)
{
	struct dmar_drhd_unit *drhd;
	int setup = 0;
	struct intel_iommu *iommu = NULL;

	for_each_iommu(iommu, drhd)
		if (iommu->qi)
			dmar_reenable_qi(iommu);

	/*
	 * Setup Interrupt-remapping for all the DRHD's now.
	 */
	for_each_iommu(iommu, drhd) {
		if (!ecap_ir_support(iommu->ecap))
			continue;

		/* Set up interrupt remapping for iommu.*/
		iommu_set_intr_remapping(iommu, eim);
		setup = 1;
	}

	if (!setup)
		goto error;

	return 0;

error:
	/*
	 * handle error condition gracefully here!
	 */
	return -1;
}

Example #3

File: intr_remapping.c Project: mjduddin/B14CKB1RD_kernel_m8

int reenable_intr_remapping(int eim)
{
	struct dmar_drhd_unit *drhd;
	int setup = 0;
	struct intel_iommu *iommu = NULL;

	for_each_iommu(iommu, drhd)
		if (iommu->qi)
			dmar_reenable_qi(iommu);

	for_each_iommu(iommu, drhd) {
		if (!ecap_ir_support(iommu->ecap))
			continue;

		
		iommu_set_intr_remapping(iommu, eim);
		setup = 1;
	}

	if (!setup)
		goto error;

	return 0;

error:
	return -1;
}