17 #include "vde.h"
19 int tegra_vde_iommu_map(struct tegra_vde *vde,  in tegra_vde_iommu_map()  argument
29 	end = vde->domain->geometry.aperture_end;  in tegra_vde_iommu_map()
30 	size = iova_align(&vde->iova, size);  in tegra_vde_iommu_map()
31 	shift = iova_shift(&vde->iova);  in tegra_vde_iommu_map()
33 	iova = alloc_iova(&vde->iova, size >> shift, end >> shift, true);  in tegra_vde_iommu_map()
37 	addr = iova_dma_addr(&vde->iova, iova);  in tegra_vde_iommu_map()
39 	size = iommu_map_sgtable(vde->domain, addr, sgt,  in tegra_vde_iommu_map()
42 		__free_iova(&vde->iova, iova);  in tegra_vde_iommu_map()
51 void tegra_vde_iommu_unmap(struct tegra_vde *vde, struct iova *iova)  in tegra_vde_iommu_unmap()  argument
53 	unsigned long shift = iova_shift(&vde->iova);  in tegra_vde_iommu_unmap()
55 	dma_addr_t addr = iova_dma_addr(&vde->iova, iova);  in tegra_vde_iommu_unmap()
57 	iommu_unmap(vde->domain, addr, size);  in tegra_vde_iommu_unmap()
58 	__free_iova(&vde->iova, iova);  in tegra_vde_iommu_unmap()
61 int tegra_vde_iommu_init(struct tegra_vde *vde)  in tegra_vde_iommu_init()  argument
63 	struct device *dev = vde->dev;  in tegra_vde_iommu_init()
69 	vde->group = iommu_group_get(dev);  in tegra_vde_iommu_init()
70 	if (!vde->group)  in tegra_vde_iommu_init()
81 	vde->domain = iommu_paging_domain_alloc(dev);  in tegra_vde_iommu_init()
82 	if (IS_ERR(vde->domain)) {  in tegra_vde_iommu_init()
83 		err = PTR_ERR(vde->domain);  in tegra_vde_iommu_init()
84 		vde->domain = NULL;  in tegra_vde_iommu_init()
92 	order = __ffs(vde->domain->pgsize_bitmap);  in tegra_vde_iommu_init()
93 	init_iova_domain(&vde->iova, 1UL << order, 0);  in tegra_vde_iommu_init()
95 	err = iommu_attach_group(vde->domain, vde->group);  in tegra_vde_iommu_init()
100 	 * We're using some static addresses that are not accessible by VDE  in tegra_vde_iommu_init()
103 	shift = iova_shift(&vde->iova);  in tegra_vde_iommu_init()
104 	iova = reserve_iova(&vde->iova, 0x60000000 >> shift,  in tegra_vde_iommu_init()
111 	vde->iova_resv_static_addresses = iova;  in tegra_vde_iommu_init()
116 	 * of address space and VDE can't handle that. Hence simply reserve  in tegra_vde_iommu_init()
119 	iova = reserve_iova(&vde->iova, 0xffffffff >> shift,  in tegra_vde_iommu_init()
126 	vde->iova_resv_last_page = iova;  in tegra_vde_iommu_init()
131 	__free_iova(&vde->iova, vde->iova_resv_static_addresses);  in tegra_vde_iommu_init()
133 	iommu_detach_group(vde->domain, vde->group);  in tegra_vde_iommu_init()
135 	put_iova_domain(&vde->iova);  in tegra_vde_iommu_init()
138 	iommu_domain_free(vde->domain);  in tegra_vde_iommu_init()
140 	iommu_group_put(vde->group);  in tegra_vde_iommu_init()
145 void tegra_vde_iommu_deinit(struct tegra_vde *vde)  in tegra_vde_iommu_deinit()  argument
147 	if (vde->domain) {  in tegra_vde_iommu_deinit()
148 		__free_iova(&vde->iova, vde->iova_resv_last_page);  in tegra_vde_iommu_deinit()
149 		__free_iova(&vde->iova, vde->iova_resv_static_addresses);  in tegra_vde_iommu_deinit()
150 		iommu_detach_group(vde->domain, vde->group);  in tegra_vde_iommu_deinit()
151 		put_iova_domain(&vde->iova);  in tegra_vde_iommu_deinit()
153 		iommu_domain_free(vde->domain);  in tegra_vde_iommu_deinit()
154 		iommu_group_put(vde->group);  in tegra_vde_iommu_deinit()
156 		vde->domain = NULL;  in tegra_vde_iommu_deinit()