Lines Matching +full:page +full:- +full:size
1 // SPDX-License-Identifier: GPL-2.0-only
3 * A fairly generic DMA-API to IOMMU-API glue layer.
5 * Copyright (C) 2014-2015 ARM Ltd.
7 * based in part on arch/arm/mm/dma-mapping.c:
8 * Copyright (C) 2000-2004 Russell King
13 #include <linux/dma-map-ops.h>
14 #include <linux/dma-iommu.h>
43 /* Trivial linear page allocator for IOMMU_DMA_MSI_COOKIE */
54 if (cookie->type == IOMMU_DMA_IOVA_COOKIE) in cookie_msi_granule()
55 return cookie->iovad.granule; in cookie_msi_granule()
65 INIT_LIST_HEAD(&cookie->msi_page_list); in cookie_alloc()
66 cookie->type = type; in cookie_alloc()
72 * iommu_get_dma_cookie - Acquire DMA-API resources for a domain
73 * @domain: IOMMU domain to prepare for DMA-API usage
76 * callback when domain->type == IOMMU_DOMAIN_DMA.
80 if (domain->iova_cookie) in iommu_get_dma_cookie()
81 return -EEXIST; in iommu_get_dma_cookie()
83 domain->iova_cookie = cookie_alloc(IOMMU_DMA_IOVA_COOKIE); in iommu_get_dma_cookie()
84 if (!domain->iova_cookie) in iommu_get_dma_cookie()
85 return -ENOMEM; in iommu_get_dma_cookie()
92 * iommu_get_msi_cookie - Acquire just MSI remapping resources
107 if (domain->type != IOMMU_DOMAIN_UNMANAGED) in iommu_get_msi_cookie()
108 return -EINVAL; in iommu_get_msi_cookie()
110 if (domain->iova_cookie) in iommu_get_msi_cookie()
111 return -EEXIST; in iommu_get_msi_cookie()
115 return -ENOMEM; in iommu_get_msi_cookie()
117 cookie->msi_iova = base; in iommu_get_msi_cookie()
118 domain->iova_cookie = cookie; in iommu_get_msi_cookie()
124 * iommu_put_dma_cookie - Release a domain's DMA mapping resources
132 struct iommu_dma_cookie *cookie = domain->iova_cookie; in iommu_put_dma_cookie()
138 if (cookie->type == IOMMU_DMA_IOVA_COOKIE && cookie->iovad.granule) in iommu_put_dma_cookie()
139 put_iova_domain(&cookie->iovad); in iommu_put_dma_cookie()
141 list_for_each_entry_safe(msi, tmp, &cookie->msi_page_list, list) { in iommu_put_dma_cookie()
142 list_del(&msi->list); in iommu_put_dma_cookie()
146 domain->iova_cookie = NULL; in iommu_put_dma_cookie()
151 * iommu_dma_get_resv_regions - Reserved region driver helper
156 * for general non-IOMMU-specific reservations. Currently, this covers GICv3
163 if (!is_of_node(dev_iommu_fwspec_get(dev)->iommu_fwnode)) in iommu_dma_get_resv_regions()
172 struct iova_domain *iovad = &cookie->iovad; in cookie_init_hw_msi_region()
176 start -= iova_offset(iovad, start); in cookie_init_hw_msi_region()
177 num_pages = iova_align(iovad, end - start) >> iova_shift(iovad); in cookie_init_hw_msi_region()
182 return -ENOMEM; in cookie_init_hw_msi_region()
184 msi_page->phys = start; in cookie_init_hw_msi_region()
185 msi_page->iova = start; in cookie_init_hw_msi_region()
186 INIT_LIST_HEAD(&msi_page->list); in cookie_init_hw_msi_region()
187 list_add(&msi_page->list, &cookie->msi_page_list); in cookie_init_hw_msi_region()
188 start += iovad->granule; in cookie_init_hw_msi_region()
197 struct pci_host_bridge *bridge = pci_find_host_bridge(dev->bus); in iova_reserve_pci_windows()
202 resource_list_for_each_entry(window, &bridge->windows) { in iova_reserve_pci_windows()
203 if (resource_type(window->res) != IORESOURCE_MEM) in iova_reserve_pci_windows()
206 lo = iova_pfn(iovad, window->res->start - window->offset); in iova_reserve_pci_windows()
207 hi = iova_pfn(iovad, window->res->end - window->offset); in iova_reserve_pci_windows()
212 resource_list_for_each_entry(window, &bridge->dma_ranges) { in iova_reserve_pci_windows()
213 end = window->res->start - window->offset; in iova_reserve_pci_windows()
221 dev_err(&dev->dev, "Failed to reserve IOVA\n"); in iova_reserve_pci_windows()
222 return -EINVAL; in iova_reserve_pci_windows()
225 start = window->res->end - window->offset + 1; in iova_reserve_pci_windows()
227 if (window->node.next == &bridge->dma_ranges && in iova_reserve_pci_windows()
240 struct iommu_dma_cookie *cookie = domain->iova_cookie; in iova_reserve_iommu_regions()
241 struct iova_domain *iovad = &cookie->iovad; in iova_reserve_iommu_regions()
257 if (region->type == IOMMU_RESV_SW_MSI) in iova_reserve_iommu_regions()
260 lo = iova_pfn(iovad, region->start); in iova_reserve_iommu_regions()
261 hi = iova_pfn(iovad, region->start + region->length - 1); in iova_reserve_iommu_regions()
264 if (region->type == IOMMU_RESV_MSI) in iova_reserve_iommu_regions()
265 ret = cookie_init_hw_msi_region(cookie, region->start, in iova_reserve_iommu_regions()
266 region->start + region->length); in iova_reserve_iommu_regions()
281 domain = cookie->fq_domain; in iommu_dma_flush_iotlb_all()
284 * implies that ops->flush_iotlb_all must be non-NULL. in iommu_dma_flush_iotlb_all()
286 domain->ops->flush_iotlb_all(domain); in iommu_dma_flush_iotlb_all()
290 * iommu_dma_init_domain - Initialise a DMA mapping domain
293 * @size: Size of IOVA space
296 * @base and @size should be exact multiples of IOMMU page granularity to
297 * avoid rounding surprises. If necessary, we reserve the page at address 0
302 u64 size, struct device *dev) in iommu_dma_init_domain() argument
304 struct iommu_dma_cookie *cookie = domain->iova_cookie; in iommu_dma_init_domain()
309 if (!cookie || cookie->type != IOMMU_DMA_IOVA_COOKIE) in iommu_dma_init_domain()
310 return -EINVAL; in iommu_dma_init_domain()
312 iovad = &cookie->iovad; in iommu_dma_init_domain()
314 /* Use the smallest supported page size for IOVA granularity */ in iommu_dma_init_domain()
315 order = __ffs(domain->pgsize_bitmap); in iommu_dma_init_domain()
319 if (domain->geometry.force_aperture) { in iommu_dma_init_domain()
320 if (base > domain->geometry.aperture_end || in iommu_dma_init_domain()
321 base + size <= domain->geometry.aperture_start) { in iommu_dma_init_domain()
323 return -EFAULT; in iommu_dma_init_domain()
327 domain->geometry.aperture_start >> order); in iommu_dma_init_domain()
330 /* start_pfn is always nonzero for an already-initialised domain */ in iommu_dma_init_domain()
331 if (iovad->start_pfn) { in iommu_dma_init_domain()
332 if (1UL << order != iovad->granule || in iommu_dma_init_domain()
333 base_pfn != iovad->start_pfn) { in iommu_dma_init_domain()
335 return -EFAULT; in iommu_dma_init_domain()
343 if (!cookie->fq_domain && !iommu_domain_get_attr(domain, in iommu_dma_init_domain()
349 cookie->fq_domain = domain; in iommu_dma_init_domain()
361 const struct iommu_ops *ops = domain->ops; in iommu_dma_deferred_attach()
366 if (unlikely(ops->is_attach_deferred && in iommu_dma_deferred_attach()
367 ops->is_attach_deferred(domain, dev))) in iommu_dma_deferred_attach()
374 * dma_info_to_prot - Translate DMA API directions and attributes to IOMMU API
375 * page flags.
377 * @coherent: Is the DMA master cache-coherent?
380 * Return: corresponding IOMMU API page protection flags
403 size_t size, u64 dma_limit, struct device *dev) in iommu_dma_alloc_iova() argument
405 struct iommu_dma_cookie *cookie = domain->iova_cookie; in iommu_dma_alloc_iova()
406 struct iova_domain *iovad = &cookie->iovad; in iommu_dma_alloc_iova()
409 if (cookie->type == IOMMU_DMA_MSI_COOKIE) { in iommu_dma_alloc_iova()
410 cookie->msi_iova += size; in iommu_dma_alloc_iova()
411 return cookie->msi_iova - size; in iommu_dma_alloc_iova()
415 iova_len = size >> shift; in iommu_dma_alloc_iova()
417 * Freeing non-power-of-two-sized allocations back into the IOVA caches in iommu_dma_alloc_iova()
420 * order of the unadjusted size will still match upon freeing. in iommu_dma_alloc_iova()
422 if (iova_len < (1 << (IOVA_RANGE_CACHE_MAX_SIZE - 1))) in iommu_dma_alloc_iova()
425 dma_limit = min_not_zero(dma_limit, dev->bus_dma_limit); in iommu_dma_alloc_iova()
427 if (domain->geometry.force_aperture) in iommu_dma_alloc_iova()
428 dma_limit = min(dma_limit, (u64)domain->geometry.aperture_end); in iommu_dma_alloc_iova()
443 dma_addr_t iova, size_t size) in iommu_dma_free_iova() argument
445 struct iova_domain *iovad = &cookie->iovad; in iommu_dma_free_iova()
448 if (cookie->type == IOMMU_DMA_MSI_COOKIE) in iommu_dma_free_iova()
449 cookie->msi_iova -= size; in iommu_dma_free_iova()
450 else if (cookie->fq_domain) /* non-strict mode */ in iommu_dma_free_iova()
452 size >> iova_shift(iovad), 0); in iommu_dma_free_iova()
455 size >> iova_shift(iovad)); in iommu_dma_free_iova()
459 size_t size) in __iommu_dma_unmap() argument
462 struct iommu_dma_cookie *cookie = domain->iova_cookie; in __iommu_dma_unmap()
463 struct iova_domain *iovad = &cookie->iovad; in __iommu_dma_unmap()
468 dma_addr -= iova_off; in __iommu_dma_unmap()
469 size = iova_align(iovad, size + iova_off); in __iommu_dma_unmap()
472 unmapped = iommu_unmap_fast(domain, dma_addr, size, &iotlb_gather); in __iommu_dma_unmap()
473 WARN_ON(unmapped != size); in __iommu_dma_unmap()
475 if (!cookie->fq_domain) in __iommu_dma_unmap()
477 iommu_dma_free_iova(cookie, dma_addr, size); in __iommu_dma_unmap()
481 size_t size, int prot, u64 dma_mask) in __iommu_dma_map() argument
484 struct iommu_dma_cookie *cookie = domain->iova_cookie; in __iommu_dma_map()
485 struct iova_domain *iovad = &cookie->iovad; in __iommu_dma_map()
492 size = iova_align(iovad, size + iova_off); in __iommu_dma_map()
494 iova = iommu_dma_alloc_iova(domain, size, dma_mask, dev); in __iommu_dma_map()
498 if (iommu_map_atomic(domain, iova, phys - iova_off, size, prot)) { in __iommu_dma_map()
499 iommu_dma_free_iova(cookie, iova, size); in __iommu_dma_map()
505 static void __iommu_dma_free_pages(struct page **pages, int count) in __iommu_dma_free_pages()
507 while (count--) in __iommu_dma_free_pages()
512 static struct page **__iommu_dma_alloc_pages(struct device *dev, in __iommu_dma_alloc_pages()
515 struct page **pages; in __iommu_dma_alloc_pages()
518 order_mask &= (2U << MAX_ORDER) - 1; in __iommu_dma_alloc_pages()
533 struct page *page = NULL; in __iommu_dma_alloc_pages() local
537 * Higher-order allocations are a convenience rather in __iommu_dma_alloc_pages()
539 * falling back to minimum-order allocations. in __iommu_dma_alloc_pages()
541 for (order_mask &= (2U << __fls(count)) - 1; in __iommu_dma_alloc_pages()
549 page = alloc_pages_node(nid, alloc_flags, order); in __iommu_dma_alloc_pages()
550 if (!page) in __iommu_dma_alloc_pages()
553 split_page(page, order); in __iommu_dma_alloc_pages()
556 if (!page) { in __iommu_dma_alloc_pages()
560 count -= order_size; in __iommu_dma_alloc_pages()
561 while (order_size--) in __iommu_dma_alloc_pages()
562 pages[i++] = page++; in __iommu_dma_alloc_pages()
568 * iommu_dma_alloc_remap - Allocate and map a buffer contiguous in IOVA space
571 * @size: Size of buffer in bytes
577 * If @size is less than PAGE_SIZE, then a full CPU page will be allocated,
582 static void *iommu_dma_alloc_remap(struct device *dev, size_t size, in iommu_dma_alloc_remap() argument
587 struct iommu_dma_cookie *cookie = domain->iova_cookie; in iommu_dma_alloc_remap()
588 struct iova_domain *iovad = &cookie->iovad; in iommu_dma_alloc_remap()
591 unsigned int count, min_size, alloc_sizes = domain->pgsize_bitmap; in iommu_dma_alloc_remap()
592 struct page **pages; in iommu_dma_alloc_remap()
602 min_size = alloc_sizes & -alloc_sizes; in iommu_dma_alloc_remap()
607 size = ALIGN(size, min_size); in iommu_dma_alloc_remap()
612 count = PAGE_ALIGN(size) >> PAGE_SHIFT; in iommu_dma_alloc_remap()
618 size = iova_align(iovad, size); in iommu_dma_alloc_remap()
619 iova = iommu_dma_alloc_iova(domain, size, dev->coherent_dma_mask, dev); in iommu_dma_alloc_remap()
623 if (sg_alloc_table_from_pages(&sgt, pages, count, 0, size, GFP_KERNEL)) in iommu_dma_alloc_remap()
631 arch_dma_prep_coherent(sg_page(sg), sg->length); in iommu_dma_alloc_remap()
635 < size) in iommu_dma_alloc_remap()
638 vaddr = dma_common_pages_remap(pages, size, prot, in iommu_dma_alloc_remap()
648 __iommu_dma_unmap(dev, iova, size); in iommu_dma_alloc_remap()
652 iommu_dma_free_iova(cookie, iova, size); in iommu_dma_alloc_remap()
659 * __iommu_dma_mmap - Map a buffer into provided user VMA
661 * @size: Size of buffer in bytes
665 * for verifying the correct size and protection of @vma beforehand.
667 static int __iommu_dma_mmap(struct page **pages, size_t size, in __iommu_dma_mmap() argument
670 return vm_map_pages(vma, pages, PAGE_ALIGN(size) >> PAGE_SHIFT); in __iommu_dma_mmap()
674 dma_addr_t dma_handle, size_t size, enum dma_data_direction dir) in iommu_dma_sync_single_for_cpu() argument
682 arch_sync_dma_for_cpu(phys, size, dir); in iommu_dma_sync_single_for_cpu()
686 dma_addr_t dma_handle, size_t size, enum dma_data_direction dir) in iommu_dma_sync_single_for_device() argument
694 arch_sync_dma_for_device(phys, size, dir); in iommu_dma_sync_single_for_device()
708 arch_sync_dma_for_cpu(sg_phys(sg), sg->length, dir); in iommu_dma_sync_sg_for_cpu()
722 arch_sync_dma_for_device(sg_phys(sg), sg->length, dir); in iommu_dma_sync_sg_for_device()
725 static dma_addr_t iommu_dma_map_page(struct device *dev, struct page *page, in iommu_dma_map_page() argument
726 unsigned long offset, size_t size, enum dma_data_direction dir, in iommu_dma_map_page() argument
729 phys_addr_t phys = page_to_phys(page) + offset; in iommu_dma_map_page()
734 dma_handle = __iommu_dma_map(dev, phys, size, prot, dma_get_mask(dev)); in iommu_dma_map_page()
737 arch_sync_dma_for_device(phys, size, dir); in iommu_dma_map_page()
742 size_t size, enum dma_data_direction dir, unsigned long attrs) in iommu_dma_unmap_page() argument
745 iommu_dma_sync_single_for_cpu(dev, dma_handle, size, dir); in iommu_dma_unmap_page()
746 __iommu_dma_unmap(dev, dma_handle, size); in iommu_dma_unmap_page()
750 * Prepare a successfully-mapped scatterlist to give back to the caller.
768 unsigned int s_iova_len = s->length; in __finalise_sg()
770 s->offset += s_iova_off; in __finalise_sg()
771 s->length = s_length; in __finalise_sg()
777 * - there is a valid output segment to append to in __finalise_sg()
778 * - and this segment starts on an IOVA page boundary in __finalise_sg()
779 * - but doesn't fall at a segment boundary in __finalise_sg()
780 * - and wouldn't make the resulting output segment too long in __finalise_sg()
783 (max_len - cur_len >= s_length)) { in __finalise_sg()
816 s->offset += sg_dma_address(s); in __invalidate_sg()
818 s->length = sg_dma_len(s); in __invalidate_sg()
828 * impedance-matching, to be able to hand off a suitably-aligned list,
835 struct iommu_dma_cookie *cookie = domain->iova_cookie; in iommu_dma_map_sg()
836 struct iova_domain *iovad = &cookie->iovad; in iommu_dma_map_sg()
853 * trickery we can modify the list in-place, but reversibly, by in iommu_dma_map_sg()
854 * stashing the unaligned parts in the as-yet-unused DMA fields. in iommu_dma_map_sg()
857 size_t s_iova_off = iova_offset(iovad, s->offset); in iommu_dma_map_sg()
858 size_t s_length = s->length; in iommu_dma_map_sg()
859 size_t pad_len = (mask - iova_len + 1) & mask; in iommu_dma_map_sg()
863 s->offset -= s_iova_off; in iommu_dma_map_sg()
865 s->length = s_length; in iommu_dma_map_sg()
870 * - If mask size >= IOVA size, then the IOVA range cannot in iommu_dma_map_sg()
872 * - If mask size < IOVA size, then the IOVA range must start in iommu_dma_map_sg()
876 * - The mask must be a power of 2, so pad_len == 0 if in iommu_dma_map_sg()
880 if (pad_len && pad_len < s_length - 1) { in iommu_dma_map_sg()
881 prev->length += pad_len; in iommu_dma_map_sg()
895 * implementation - it knows better than we do. in iommu_dma_map_sg()
924 for_each_sg(sg_next(sg), tmp, nents - 1, i) { in iommu_dma_unmap_sg()
930 __iommu_dma_unmap(dev, start, end - start); in iommu_dma_unmap_sg()
934 size_t size, enum dma_data_direction dir, unsigned long attrs) in iommu_dma_map_resource() argument
936 return __iommu_dma_map(dev, phys, size, in iommu_dma_map_resource()
942 size_t size, enum dma_data_direction dir, unsigned long attrs) in iommu_dma_unmap_resource() argument
944 __iommu_dma_unmap(dev, handle, size); in iommu_dma_unmap_resource()
947 static void __iommu_dma_free(struct device *dev, size_t size, void *cpu_addr) in __iommu_dma_free() argument
949 size_t alloc_size = PAGE_ALIGN(size); in __iommu_dma_free()
951 struct page *page = NULL, **pages = NULL; in __iommu_dma_free() local
953 /* Non-coherent atomic allocation? Easy */ in __iommu_dma_free()
960 * If it the address is remapped, then it's either non-coherent in __iommu_dma_free()
965 page = vmalloc_to_page(cpu_addr); in __iommu_dma_free()
969 page = virt_to_page(cpu_addr); in __iommu_dma_free()
974 if (page) in __iommu_dma_free()
975 dma_free_contiguous(dev, page, alloc_size); in __iommu_dma_free()
978 static void iommu_dma_free(struct device *dev, size_t size, void *cpu_addr, in iommu_dma_free() argument
981 __iommu_dma_unmap(dev, handle, size); in iommu_dma_free()
982 __iommu_dma_free(dev, size, cpu_addr); in iommu_dma_free()
985 static void *iommu_dma_alloc_pages(struct device *dev, size_t size, in iommu_dma_alloc_pages() argument
986 struct page **pagep, gfp_t gfp, unsigned long attrs) in iommu_dma_alloc_pages()
989 size_t alloc_size = PAGE_ALIGN(size); in iommu_dma_alloc_pages()
991 struct page *page = NULL; in iommu_dma_alloc_pages() local
994 page = dma_alloc_contiguous(dev, alloc_size, gfp); in iommu_dma_alloc_pages()
995 if (!page) in iommu_dma_alloc_pages()
996 page = alloc_pages_node(node, gfp, get_order(alloc_size)); in iommu_dma_alloc_pages()
997 if (!page) in iommu_dma_alloc_pages()
1000 if (IS_ENABLED(CONFIG_DMA_REMAP) && (!coherent || PageHighMem(page))) { in iommu_dma_alloc_pages()
1003 cpu_addr = dma_common_contiguous_remap(page, alloc_size, in iommu_dma_alloc_pages()
1009 arch_dma_prep_coherent(page, size); in iommu_dma_alloc_pages()
1011 cpu_addr = page_address(page); in iommu_dma_alloc_pages()
1014 *pagep = page; in iommu_dma_alloc_pages()
1018 dma_free_contiguous(dev, page, alloc_size); in iommu_dma_alloc_pages()
1022 static void *iommu_dma_alloc(struct device *dev, size_t size, in iommu_dma_alloc() argument
1027 struct page *page = NULL; in iommu_dma_alloc() local
1034 return iommu_dma_alloc_remap(dev, size, handle, gfp, in iommu_dma_alloc()
1040 page = dma_alloc_from_pool(dev, PAGE_ALIGN(size), &cpu_addr, in iommu_dma_alloc()
1043 cpu_addr = iommu_dma_alloc_pages(dev, size, &page, gfp, attrs); in iommu_dma_alloc()
1047 *handle = __iommu_dma_map(dev, page_to_phys(page), size, ioprot, in iommu_dma_alloc()
1048 dev->coherent_dma_mask); in iommu_dma_alloc()
1050 __iommu_dma_free(dev, size, cpu_addr); in iommu_dma_alloc()
1058 static void *iommu_dma_alloc_noncoherent(struct device *dev, size_t size, in iommu_dma_alloc_noncoherent() argument
1062 struct page *page; in iommu_dma_alloc_noncoherent() local
1064 page = dma_common_alloc_pages(dev, size, handle, dir, gfp); in iommu_dma_alloc_noncoherent()
1065 if (!page) in iommu_dma_alloc_noncoherent()
1067 return page_address(page); in iommu_dma_alloc_noncoherent()
1070 return iommu_dma_alloc_remap(dev, size, handle, gfp | __GFP_ZERO, in iommu_dma_alloc_noncoherent()
1074 static void iommu_dma_free_noncoherent(struct device *dev, size_t size, in iommu_dma_free_noncoherent() argument
1077 __iommu_dma_unmap(dev, handle, size); in iommu_dma_free_noncoherent()
1078 __iommu_dma_free(dev, size, cpu_addr); in iommu_dma_free_noncoherent()
1086 void *cpu_addr, dma_addr_t dma_addr, size_t size, in iommu_dma_mmap() argument
1089 unsigned long nr_pages = PAGE_ALIGN(size) >> PAGE_SHIFT; in iommu_dma_mmap()
1090 unsigned long pfn, off = vma->vm_pgoff; in iommu_dma_mmap()
1093 vma->vm_page_prot = dma_pgprot(dev, vma->vm_page_prot, attrs); in iommu_dma_mmap()
1095 if (dma_mmap_from_dev_coherent(dev, vma, cpu_addr, size, &ret)) in iommu_dma_mmap()
1098 if (off >= nr_pages || vma_pages(vma) > nr_pages - off) in iommu_dma_mmap()
1099 return -ENXIO; in iommu_dma_mmap()
1102 struct page **pages = dma_common_find_pages(cpu_addr); in iommu_dma_mmap()
1105 return __iommu_dma_mmap(pages, size, vma); in iommu_dma_mmap()
1111 return remap_pfn_range(vma, vma->vm_start, pfn + off, in iommu_dma_mmap()
1112 vma->vm_end - vma->vm_start, in iommu_dma_mmap()
1113 vma->vm_page_prot); in iommu_dma_mmap()
1117 void *cpu_addr, dma_addr_t dma_addr, size_t size, in iommu_dma_get_sgtable() argument
1120 struct page *page; in iommu_dma_get_sgtable() local
1124 struct page **pages = dma_common_find_pages(cpu_addr); in iommu_dma_get_sgtable()
1128 PAGE_ALIGN(size) >> PAGE_SHIFT, in iommu_dma_get_sgtable()
1129 0, size, GFP_KERNEL); in iommu_dma_get_sgtable()
1132 page = vmalloc_to_page(cpu_addr); in iommu_dma_get_sgtable()
1134 page = virt_to_page(cpu_addr); in iommu_dma_get_sgtable()
1139 sg_set_page(sgt->sgl, page, PAGE_ALIGN(size), 0); in iommu_dma_get_sgtable()
1147 return (1UL << __ffs(domain->pgsize_bitmap)) - 1; in iommu_dma_get_merge_boundary()
1174 * IOMMU driver needs to support via the dma-iommu layer.
1176 void iommu_setup_dma_ops(struct device *dev, u64 dma_base, u64 size) in iommu_setup_dma_ops() argument
1185 * underlying IOMMU driver needs to support via the dma-iommu layer. in iommu_setup_dma_ops()
1187 if (domain->type == IOMMU_DOMAIN_DMA) { in iommu_setup_dma_ops()
1188 if (iommu_dma_init_domain(domain, dma_base, size, dev)) in iommu_setup_dma_ops()
1190 dev->dma_ops = &iommu_dma_ops; in iommu_setup_dma_ops()
1202 struct iommu_dma_cookie *cookie = domain->iova_cookie; in iommu_dma_get_msi_page()
1206 size_t size = cookie_msi_granule(cookie); in iommu_dma_get_msi_page() local
1208 msi_addr &= ~(phys_addr_t)(size - 1); in iommu_dma_get_msi_page()
1209 list_for_each_entry(msi_page, &cookie->msi_page_list, list) in iommu_dma_get_msi_page()
1210 if (msi_page->phys == msi_addr) in iommu_dma_get_msi_page()
1217 iova = iommu_dma_alloc_iova(domain, size, dma_get_mask(dev), dev); in iommu_dma_get_msi_page()
1221 if (iommu_map(domain, iova, msi_addr, size, prot)) in iommu_dma_get_msi_page()
1224 INIT_LIST_HEAD(&msi_page->list); in iommu_dma_get_msi_page()
1225 msi_page->phys = msi_addr; in iommu_dma_get_msi_page()
1226 msi_page->iova = iova; in iommu_dma_get_msi_page()
1227 list_add(&msi_page->list, &cookie->msi_page_list); in iommu_dma_get_msi_page()
1231 iommu_dma_free_iova(cookie, iova, size); in iommu_dma_get_msi_page()
1244 if (!domain || !domain->iova_cookie) { in iommu_dma_prepare_msi()
1245 desc->iommu_cookie = NULL; in iommu_dma_prepare_msi()
1261 return -ENOMEM; in iommu_dma_prepare_msi()
1274 if (!domain || !domain->iova_cookie || WARN_ON(!msi_page)) in iommu_dma_compose_msi_msg()
1277 msg->address_hi = upper_32_bits(msi_page->iova); in iommu_dma_compose_msi_msg()
1278 msg->address_lo &= cookie_msi_granule(domain->iova_cookie) - 1; in iommu_dma_compose_msi_msg()
1279 msg->address_lo += lower_32_bits(msi_page->iova); in iommu_dma_compose_msi_msg()