C++ (Cpp) of_parse_dma_window示例

示例#1

文件： vio.c 项目： human3000/linux-2.6

static struct iommu_table *vio_build_iommu_table(struct vio_dev *dev)
{
	const unsigned char *dma_window;
	struct iommu_table *tbl;
	unsigned long offset, size;

	if (firmware_has_feature(FW_FEATURE_ISERIES))
		return vio_build_iommu_table_iseries(dev);

	dma_window = of_get_property(dev->dev.archdata.of_node,
				  "ibm,my-dma-window", NULL);
	if (!dma_window)
		return NULL;

	tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);

	of_parse_dma_window(dev->dev.archdata.of_node, dma_window,
			    &tbl->it_index, &offset, &size);

	/* TCE table size - measured in tce entries */
	tbl->it_size = size >> IOMMU_PAGE_SHIFT;
	/* offset for VIO should always be 0 */
	tbl->it_offset = offset >> IOMMU_PAGE_SHIFT;
	tbl->it_busno = 0;
	tbl->it_type = TCE_VB;

	return iommu_init_table(tbl, -1);
}

示例#2

文件： vio.c 项目： mrtos/Logitech-Revue

static struct iommu_table *vio_build_iommu_table(struct vio_dev *dev)
{
#ifdef CONFIG_PPC_ISERIES
	if (firmware_has_feature(FW_FEATURE_ISERIES)) {
		if (strcmp(dev->type, "network") == 0)
			return &veth_iommu_table;
		return &vio_iommu_table;
	} else
#endif
	{
		const unsigned char *dma_window;
		struct iommu_table *tbl;
		unsigned long offset, size;

		dma_window = get_property(dev->dev.platform_data,
				"ibm,my-dma-window", NULL);
		if (!dma_window)
			return NULL;

		tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);

		of_parse_dma_window(dev->dev.platform_data, dma_window,
				&tbl->it_index, &offset, &size);

		/* TCE table size - measured in tce entries */
		tbl->it_size = size >> IOMMU_PAGE_SHIFT;
		/* offset for VIO should always be 0 */
		tbl->it_offset = offset >> IOMMU_PAGE_SHIFT;
		tbl->it_busno = 0;
		tbl->it_type = TCE_VB;

		return iommu_init_table(tbl, -1);
	}
}

示例#3

文件： iommu.c 项目： ANFS/ANFS-kernel

/*
 * iommu_table_setparms_lpar
 *
 * Function: On pSeries LPAR systems, return TCE table info, given a pci bus.
 */
static void iommu_table_setparms_lpar(struct pci_controller *phb,
				      struct device_node *dn,
				      struct iommu_table *tbl,
				      const void *dma_window)
{
	unsigned long offset, size;

	of_parse_dma_window(dn, dma_window, &tbl->it_index, &offset, &size);

	tbl->it_busno = phb->bus->number;
	tbl->it_base   = 0;
	tbl->it_blocksize  = 16;
	tbl->it_type = TCE_PCI;
	tbl->it_offset = offset >> IOMMU_PAGE_SHIFT;
	tbl->it_size = size >> IOMMU_PAGE_SHIFT;
}

示例#4

文件： iommu.c 项目： FatSunHYS/OSCourseDesign

/*
 * iommu_table_setparms_lpar
 *
 * Function: On pSeries LPAR systems, return TCE table info, given a pci bus.
 */
static void iommu_table_setparms_lpar(struct pci_controller *phb,
				      struct device_node *dn,
				      struct iommu_table *tbl,
				      unsigned char *dma_window)
{
	unsigned long offset, size;

	tbl->it_busno  = PCI_DN(dn)->bussubno;
	of_parse_dma_window(dn, dma_window, &tbl->it_index, &offset, &size);

	tbl->it_base   = 0;
	tbl->it_blocksize  = 16;
	tbl->it_type = TCE_PCI;
	tbl->it_offset = offset >> PAGE_SHIFT;
	tbl->it_size = size >> PAGE_SHIFT;
}