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, in iova_reserve_pci_windows()
222 "Failed to reserve IOVA [%pa-%pa]\n", in iova_reserve_pci_windows()
224 return -EINVAL; in iova_reserve_pci_windows()
227 start = window->res->end - window->offset + 1; in iova_reserve_pci_windows()
229 if (window->node.next == &bridge->dma_ranges && in iova_reserve_pci_windows()
242 struct iommu_dma_cookie *cookie = domain->iova_cookie; in iova_reserve_iommu_regions()
243 struct iova_domain *iovad = &cookie->iovad; in iova_reserve_iommu_regions()
259 if (region->type == IOMMU_RESV_SW_MSI) in iova_reserve_iommu_regions()
262 lo = iova_pfn(iovad, region->start); in iova_reserve_iommu_regions()
263 hi = iova_pfn(iovad, region->start + region->length - 1); in iova_reserve_iommu_regions()
266 if (region->type == IOMMU_RESV_MSI) in iova_reserve_iommu_regions()
267 ret = cookie_init_hw_msi_region(cookie, region->start, in iova_reserve_iommu_regions()
268 region->start + region->length); in iova_reserve_iommu_regions()
283 domain = cookie->fq_domain; in iommu_dma_flush_iotlb_all()
286 * implies that ops->flush_iotlb_all must be non-NULL. in iommu_dma_flush_iotlb_all()
288 domain->ops->flush_iotlb_all(domain); in iommu_dma_flush_iotlb_all()
292 * iommu_dma_init_domain - Initialise a DMA mapping domain
295 * @size: Size of IOVA space
298 * @base and @size should be exact multiples of IOMMU page granularity to
299 * avoid rounding surprises. If necessary, we reserve the page at address 0
304 u64 size, struct device *dev) in iommu_dma_init_domain() argument
306 struct iommu_dma_cookie *cookie = domain->iova_cookie; in iommu_dma_init_domain()
311 if (!cookie || cookie->type != IOMMU_DMA_IOVA_COOKIE) in iommu_dma_init_domain()
312 return -EINVAL; in iommu_dma_init_domain()
314 iovad = &cookie->iovad; in iommu_dma_init_domain()
316 /* Use the smallest supported page size for IOVA granularity */ in iommu_dma_init_domain()
317 order = __ffs(domain->pgsize_bitmap); in iommu_dma_init_domain()
321 if (domain->geometry.force_aperture) { in iommu_dma_init_domain()
322 if (base > domain->geometry.aperture_end || in iommu_dma_init_domain()
323 base + size <= domain->geometry.aperture_start) { in iommu_dma_init_domain()
325 return -EFAULT; in iommu_dma_init_domain()
329 domain->geometry.aperture_start >> order); in iommu_dma_init_domain()
332 /* start_pfn is always nonzero for an already-initialised domain */ in iommu_dma_init_domain()
333 if (iovad->start_pfn) { in iommu_dma_init_domain()
334 if (1UL << order != iovad->granule || in iommu_dma_init_domain()
335 base_pfn != iovad->start_pfn) { in iommu_dma_init_domain()
337 return -EFAULT; in iommu_dma_init_domain()
345 if (!cookie->fq_domain && !iommu_domain_get_attr(domain, in iommu_dma_init_domain()
351 cookie->fq_domain = domain; in iommu_dma_init_domain()
363 const struct iommu_ops *ops = domain->ops; in iommu_dma_deferred_attach()
368 if (unlikely(ops->is_attach_deferred && in iommu_dma_deferred_attach()
369 ops->is_attach_deferred(domain, dev))) in iommu_dma_deferred_attach()
376 * dma_info_to_prot - Translate DMA API directions and attributes to IOMMU API
377 * page flags.
379 * @coherent: Is the DMA master cache-coherent?
382 * Return: corresponding IOMMU API page protection flags
405 size_t size, u64 dma_limit, struct device *dev) in iommu_dma_alloc_iova() argument
407 struct iommu_dma_cookie *cookie = domain->iova_cookie; in iommu_dma_alloc_iova()
408 struct iova_domain *iovad = &cookie->iovad; in iommu_dma_alloc_iova()
411 if (cookie->type == IOMMU_DMA_MSI_COOKIE) { in iommu_dma_alloc_iova()
412 cookie->msi_iova += size; in iommu_dma_alloc_iova()
413 return cookie->msi_iova - size; in iommu_dma_alloc_iova()
417 iova_len = size >> shift; in iommu_dma_alloc_iova()
419 * Freeing non-power-of-two-sized allocations back into the IOVA caches in iommu_dma_alloc_iova()
422 * order of the unadjusted size will still match upon freeing. in iommu_dma_alloc_iova()
424 if (iova_len < (1 << (IOVA_RANGE_CACHE_MAX_SIZE - 1))) in iommu_dma_alloc_iova()
427 dma_limit = min_not_zero(dma_limit, dev->bus_dma_limit); in iommu_dma_alloc_iova()
429 if (domain->geometry.force_aperture) in iommu_dma_alloc_iova()
430 dma_limit = min(dma_limit, (u64)domain->geometry.aperture_end); in iommu_dma_alloc_iova()
445 dma_addr_t iova, size_t size) in iommu_dma_free_iova() argument
447 struct iova_domain *iovad = &cookie->iovad; in iommu_dma_free_iova()
450 if (cookie->type == IOMMU_DMA_MSI_COOKIE) in iommu_dma_free_iova()
451 cookie->msi_iova -= size; in iommu_dma_free_iova()
452 else if (cookie->fq_domain) /* non-strict mode */ in iommu_dma_free_iova()
454 size >> iova_shift(iovad), 0); in iommu_dma_free_iova()
457 size >> iova_shift(iovad)); in iommu_dma_free_iova()
461 size_t size) in __iommu_dma_unmap() argument
464 struct iommu_dma_cookie *cookie = domain->iova_cookie; in __iommu_dma_unmap()
465 struct iova_domain *iovad = &cookie->iovad; in __iommu_dma_unmap()
470 dma_addr -= iova_off; in __iommu_dma_unmap()
471 size = iova_align(iovad, size + iova_off); in __iommu_dma_unmap()
474 unmapped = iommu_unmap_fast(domain, dma_addr, size, &iotlb_gather); in __iommu_dma_unmap()
475 WARN_ON(unmapped != size); in __iommu_dma_unmap()
477 if (!cookie->fq_domain) in __iommu_dma_unmap()
479 iommu_dma_free_iova(cookie, dma_addr, size); in __iommu_dma_unmap()
483 size_t size, int prot, u64 dma_mask) in __iommu_dma_map() argument
486 struct iommu_dma_cookie *cookie = domain->iova_cookie; in __iommu_dma_map()
487 struct iova_domain *iovad = &cookie->iovad; in __iommu_dma_map()
494 size = iova_align(iovad, size + iova_off); in __iommu_dma_map()
496 iova = iommu_dma_alloc_iova(domain, size, dma_mask, dev); in __iommu_dma_map()
500 if (iommu_map_atomic(domain, iova, phys - iova_off, size, prot)) { in __iommu_dma_map()
501 iommu_dma_free_iova(cookie, iova, size); in __iommu_dma_map()
507 static void __iommu_dma_free_pages(struct page **pages, int count) in __iommu_dma_free_pages()
509 while (count--) in __iommu_dma_free_pages()
514 static struct page **__iommu_dma_alloc_pages(struct device *dev, in __iommu_dma_alloc_pages()
517 struct page **pages; in __iommu_dma_alloc_pages()
520 order_mask &= (2U << MAX_ORDER) - 1; in __iommu_dma_alloc_pages()
535 struct page *page = NULL; in __iommu_dma_alloc_pages() local
539 * Higher-order allocations are a convenience rather in __iommu_dma_alloc_pages()
541 * falling back to minimum-order allocations. in __iommu_dma_alloc_pages()
543 for (order_mask &= (2U << __fls(count)) - 1; in __iommu_dma_alloc_pages()
551 page = alloc_pages_node(nid, alloc_flags, order); in __iommu_dma_alloc_pages()
552 if (!page) in __iommu_dma_alloc_pages()
555 split_page(page, order); in __iommu_dma_alloc_pages()
558 if (!page) { in __iommu_dma_alloc_pages()
562 count -= order_size; in __iommu_dma_alloc_pages()
563 while (order_size--) in __iommu_dma_alloc_pages()
564 pages[i++] = page++; in __iommu_dma_alloc_pages()
570 * iommu_dma_alloc_remap - Allocate and map a buffer contiguous in IOVA space
573 * @size: Size of buffer in bytes
579 * If @size is less than PAGE_SIZE, then a full CPU page will be allocated,
584 static void *iommu_dma_alloc_remap(struct device *dev, size_t size, in iommu_dma_alloc_remap() argument
589 struct iommu_dma_cookie *cookie = domain->iova_cookie; in iommu_dma_alloc_remap()
590 struct iova_domain *iovad = &cookie->iovad; in iommu_dma_alloc_remap()
593 unsigned int count, min_size, alloc_sizes = domain->pgsize_bitmap; in iommu_dma_alloc_remap()
594 struct page **pages; in iommu_dma_alloc_remap()
604 min_size = alloc_sizes & -alloc_sizes; in iommu_dma_alloc_remap()
609 size = ALIGN(size, min_size); in iommu_dma_alloc_remap()
614 count = PAGE_ALIGN(size) >> PAGE_SHIFT; in iommu_dma_alloc_remap()
620 size = iova_align(iovad, size); in iommu_dma_alloc_remap()
621 iova = iommu_dma_alloc_iova(domain, size, dev->coherent_dma_mask, dev); in iommu_dma_alloc_remap()
625 if (sg_alloc_table_from_pages(&sgt, pages, count, 0, size, GFP_KERNEL)) in iommu_dma_alloc_remap()
633 arch_dma_prep_coherent(sg_page(sg), sg->length); in iommu_dma_alloc_remap()
637 < size) in iommu_dma_alloc_remap()
640 vaddr = dma_common_pages_remap(pages, size, prot, in iommu_dma_alloc_remap()
650 __iommu_dma_unmap(dev, iova, size); in iommu_dma_alloc_remap()
654 iommu_dma_free_iova(cookie, iova, size); in iommu_dma_alloc_remap()
661 * __iommu_dma_mmap - Map a buffer into provided user VMA
663 * @size: Size of buffer in bytes
667 * for verifying the correct size and protection of @vma beforehand.
669 static int __iommu_dma_mmap(struct page **pages, size_t size, in __iommu_dma_mmap() argument
672 return vm_map_pages(vma, pages, PAGE_ALIGN(size) >> PAGE_SHIFT); in __iommu_dma_mmap()
676 dma_addr_t dma_handle, size_t size, enum dma_data_direction dir) in iommu_dma_sync_single_for_cpu() argument
684 arch_sync_dma_for_cpu(phys, size, dir); in iommu_dma_sync_single_for_cpu()
688 dma_addr_t dma_handle, size_t size, enum dma_data_direction dir) in iommu_dma_sync_single_for_device() argument
696 arch_sync_dma_for_device(phys, size, dir); in iommu_dma_sync_single_for_device()
710 arch_sync_dma_for_cpu(sg_phys(sg), sg->length, dir); in iommu_dma_sync_sg_for_cpu()
724 arch_sync_dma_for_device(sg_phys(sg), sg->length, dir); in iommu_dma_sync_sg_for_device()
727 static dma_addr_t iommu_dma_map_page(struct device *dev, struct page *page, in iommu_dma_map_page() argument
728 unsigned long offset, size_t size, enum dma_data_direction dir, in iommu_dma_map_page() argument
731 phys_addr_t phys = page_to_phys(page) + offset; in iommu_dma_map_page()
736 dma_handle = __iommu_dma_map(dev, phys, size, prot, dma_get_mask(dev)); in iommu_dma_map_page()
739 arch_sync_dma_for_device(phys, size, dir); in iommu_dma_map_page()
744 size_t size, enum dma_data_direction dir, unsigned long attrs) in iommu_dma_unmap_page() argument
747 iommu_dma_sync_single_for_cpu(dev, dma_handle, size, dir); in iommu_dma_unmap_page()
748 __iommu_dma_unmap(dev, dma_handle, size); in iommu_dma_unmap_page()
752 * Prepare a successfully-mapped scatterlist to give back to the caller.
770 unsigned int s_iova_len = s->length; in __finalise_sg()
772 s->offset += s_iova_off; in __finalise_sg()
773 s->length = s_length; in __finalise_sg()
779 * - there is a valid output segment to append to in __finalise_sg()
780 * - and this segment starts on an IOVA page boundary in __finalise_sg()
781 * - but doesn't fall at a segment boundary in __finalise_sg()
782 * - and wouldn't make the resulting output segment too long in __finalise_sg()
785 (max_len - cur_len >= s_length)) { in __finalise_sg()
818 s->offset += sg_dma_address(s); in __invalidate_sg()
820 s->length = sg_dma_len(s); in __invalidate_sg()
830 * impedance-matching, to be able to hand off a suitably-aligned list,
837 struct iommu_dma_cookie *cookie = domain->iova_cookie; in iommu_dma_map_sg()
838 struct iova_domain *iovad = &cookie->iovad; in iommu_dma_map_sg()
855 * trickery we can modify the list in-place, but reversibly, by in iommu_dma_map_sg()
856 * stashing the unaligned parts in the as-yet-unused DMA fields. in iommu_dma_map_sg()
859 size_t s_iova_off = iova_offset(iovad, s->offset); in iommu_dma_map_sg()
860 size_t s_length = s->length; in iommu_dma_map_sg()
861 size_t pad_len = (mask - iova_len + 1) & mask; in iommu_dma_map_sg()
865 s->offset -= s_iova_off; in iommu_dma_map_sg()
867 s->length = s_length; in iommu_dma_map_sg()
872 * - If mask size >= IOVA size, then the IOVA range cannot in iommu_dma_map_sg()
874 * - If mask size < IOVA size, then the IOVA range must start in iommu_dma_map_sg()
878 * - The mask must be a power of 2, so pad_len == 0 if in iommu_dma_map_sg()
882 if (pad_len && pad_len < s_length - 1) { in iommu_dma_map_sg()
883 prev->length += pad_len; in iommu_dma_map_sg()
897 * implementation - it knows better than we do. in iommu_dma_map_sg()
926 for_each_sg(sg_next(sg), tmp, nents - 1, i) { in iommu_dma_unmap_sg()
932 __iommu_dma_unmap(dev, start, end - start); in iommu_dma_unmap_sg()
936 size_t size, enum dma_data_direction dir, unsigned long attrs) in iommu_dma_map_resource() argument
938 return __iommu_dma_map(dev, phys, size, in iommu_dma_map_resource()
944 size_t size, enum dma_data_direction dir, unsigned long attrs) in iommu_dma_unmap_resource() argument
946 __iommu_dma_unmap(dev, handle, size); in iommu_dma_unmap_resource()
949 static void __iommu_dma_free(struct device *dev, size_t size, void *cpu_addr) in __iommu_dma_free() argument
951 size_t alloc_size = PAGE_ALIGN(size); in __iommu_dma_free()
953 struct page *page = NULL, **pages = NULL; in __iommu_dma_free() local
955 /* Non-coherent atomic allocation? Easy */ in __iommu_dma_free()
962 * If it the address is remapped, then it's either non-coherent in __iommu_dma_free()
967 page = vmalloc_to_page(cpu_addr); in __iommu_dma_free()
971 page = virt_to_page(cpu_addr); in __iommu_dma_free()
976 if (page) in __iommu_dma_free()
977 dma_free_contiguous(dev, page, alloc_size); in __iommu_dma_free()
980 static void iommu_dma_free(struct device *dev, size_t size, void *cpu_addr, in iommu_dma_free() argument
983 __iommu_dma_unmap(dev, handle, size); in iommu_dma_free()
984 __iommu_dma_free(dev, size, cpu_addr); in iommu_dma_free()
987 static void *iommu_dma_alloc_pages(struct device *dev, size_t size, in iommu_dma_alloc_pages() argument
988 struct page **pagep, gfp_t gfp, unsigned long attrs) in iommu_dma_alloc_pages()
991 size_t alloc_size = PAGE_ALIGN(size); in iommu_dma_alloc_pages()
993 struct page *page = NULL; in iommu_dma_alloc_pages() local
996 page = dma_alloc_contiguous(dev, alloc_size, gfp); in iommu_dma_alloc_pages()
997 if (!page) in iommu_dma_alloc_pages()
998 page = alloc_pages_node(node, gfp, get_order(alloc_size)); in iommu_dma_alloc_pages()
999 if (!page) in iommu_dma_alloc_pages()
1002 if (IS_ENABLED(CONFIG_DMA_REMAP) && (!coherent || PageHighMem(page))) { in iommu_dma_alloc_pages()
1005 cpu_addr = dma_common_contiguous_remap(page, alloc_size, in iommu_dma_alloc_pages()
1011 arch_dma_prep_coherent(page, size); in iommu_dma_alloc_pages()
1013 cpu_addr = page_address(page); in iommu_dma_alloc_pages()
1016 *pagep = page; in iommu_dma_alloc_pages()
1020 dma_free_contiguous(dev, page, alloc_size); in iommu_dma_alloc_pages()
1024 static void *iommu_dma_alloc(struct device *dev, size_t size, in iommu_dma_alloc() argument
1029 struct page *page = NULL; in iommu_dma_alloc() local
1036 return iommu_dma_alloc_remap(dev, size, handle, gfp, in iommu_dma_alloc()
1042 page = dma_alloc_from_pool(dev, PAGE_ALIGN(size), &cpu_addr, in iommu_dma_alloc()
1045 cpu_addr = iommu_dma_alloc_pages(dev, size, &page, gfp, attrs); in iommu_dma_alloc()
1049 *handle = __iommu_dma_map(dev, page_to_phys(page), size, ioprot, in iommu_dma_alloc()
1050 dev->coherent_dma_mask); in iommu_dma_alloc()
1052 __iommu_dma_free(dev, size, cpu_addr); in iommu_dma_alloc()
1060 static void *iommu_dma_alloc_noncoherent(struct device *dev, size_t size, in iommu_dma_alloc_noncoherent() argument
1064 struct page *page; in iommu_dma_alloc_noncoherent() local
1066 page = dma_common_alloc_pages(dev, size, handle, dir, gfp); in iommu_dma_alloc_noncoherent()
1067 if (!page) in iommu_dma_alloc_noncoherent()
1069 return page_address(page); in iommu_dma_alloc_noncoherent()
1072 return iommu_dma_alloc_remap(dev, size, handle, gfp | __GFP_ZERO, in iommu_dma_alloc_noncoherent()
1076 static void iommu_dma_free_noncoherent(struct device *dev, size_t size, in iommu_dma_free_noncoherent() argument
1079 __iommu_dma_unmap(dev, handle, size); in iommu_dma_free_noncoherent()
1080 __iommu_dma_free(dev, size, cpu_addr); in iommu_dma_free_noncoherent()
1088 void *cpu_addr, dma_addr_t dma_addr, size_t size, in iommu_dma_mmap() argument
1091 unsigned long nr_pages = PAGE_ALIGN(size) >> PAGE_SHIFT; in iommu_dma_mmap()
1092 unsigned long pfn, off = vma->vm_pgoff; in iommu_dma_mmap()
1095 vma->vm_page_prot = dma_pgprot(dev, vma->vm_page_prot, attrs); in iommu_dma_mmap()
1097 if (dma_mmap_from_dev_coherent(dev, vma, cpu_addr, size, &ret)) in iommu_dma_mmap()
1100 if (off >= nr_pages || vma_pages(vma) > nr_pages - off) in iommu_dma_mmap()
1101 return -ENXIO; in iommu_dma_mmap()
1104 struct page **pages = dma_common_find_pages(cpu_addr); in iommu_dma_mmap()
1107 return __iommu_dma_mmap(pages, size, vma); in iommu_dma_mmap()
1113 return remap_pfn_range(vma, vma->vm_start, pfn + off, in iommu_dma_mmap()
1114 vma->vm_end - vma->vm_start, in iommu_dma_mmap()
1115 vma->vm_page_prot); in iommu_dma_mmap()
1119 void *cpu_addr, dma_addr_t dma_addr, size_t size, in iommu_dma_get_sgtable() argument
1122 struct page *page; in iommu_dma_get_sgtable() local
1126 struct page **pages = dma_common_find_pages(cpu_addr); in iommu_dma_get_sgtable()
1130 PAGE_ALIGN(size) >> PAGE_SHIFT, in iommu_dma_get_sgtable()
1131 0, size, GFP_KERNEL); in iommu_dma_get_sgtable()
1134 page = vmalloc_to_page(cpu_addr); in iommu_dma_get_sgtable()
1136 page = virt_to_page(cpu_addr); in iommu_dma_get_sgtable()
1141 sg_set_page(sgt->sgl, page, PAGE_ALIGN(size), 0); in iommu_dma_get_sgtable()
1149 return (1UL << __ffs(domain->pgsize_bitmap)) - 1; in iommu_dma_get_merge_boundary()
1176 * IOMMU driver needs to support via the dma-iommu layer.
1178 void iommu_setup_dma_ops(struct device *dev, u64 dma_base, u64 size) in iommu_setup_dma_ops() argument
1187 * underlying IOMMU driver needs to support via the dma-iommu layer. in iommu_setup_dma_ops()
1189 if (domain->type == IOMMU_DOMAIN_DMA) { in iommu_setup_dma_ops()
1190 if (iommu_dma_init_domain(domain, dma_base, size, dev)) in iommu_setup_dma_ops()
1192 dev->dma_ops = &iommu_dma_ops; in iommu_setup_dma_ops()
1204 struct iommu_dma_cookie *cookie = domain->iova_cookie; in iommu_dma_get_msi_page()
1208 size_t size = cookie_msi_granule(cookie); in iommu_dma_get_msi_page() local
1210 msi_addr &= ~(phys_addr_t)(size - 1); in iommu_dma_get_msi_page()
1211 list_for_each_entry(msi_page, &cookie->msi_page_list, list) in iommu_dma_get_msi_page()
1212 if (msi_page->phys == msi_addr) in iommu_dma_get_msi_page()
1219 iova = iommu_dma_alloc_iova(domain, size, dma_get_mask(dev), dev); in iommu_dma_get_msi_page()
1223 if (iommu_map(domain, iova, msi_addr, size, prot)) in iommu_dma_get_msi_page()
1226 INIT_LIST_HEAD(&msi_page->list); in iommu_dma_get_msi_page()
1227 msi_page->phys = msi_addr; in iommu_dma_get_msi_page()
1228 msi_page->iova = iova; in iommu_dma_get_msi_page()
1229 list_add(&msi_page->list, &cookie->msi_page_list); in iommu_dma_get_msi_page()
1233 iommu_dma_free_iova(cookie, iova, size); in iommu_dma_get_msi_page()
1246 if (!domain || !domain->iova_cookie) { in iommu_dma_prepare_msi()
1247 desc->iommu_cookie = NULL; in iommu_dma_prepare_msi()
1263 return -ENOMEM; in iommu_dma_prepare_msi()
1276 if (!domain || !domain->iova_cookie || WARN_ON(!msi_page)) in iommu_dma_compose_msi_msg()
1279 msg->address_hi = upper_32_bits(msi_page->iova); in iommu_dma_compose_msi_msg()
1280 msg->address_lo &= cookie_msi_granule(domain->iova_cookie) - 1; in iommu_dma_compose_msi_msg()
1281 msg->address_lo += lower_32_bits(msi_page->iova); in iommu_dma_compose_msi_msg()