diff options
Diffstat (limited to 'arch/ia64/hp/common/sba_iommu.c')
| -rw-r--r-- | arch/ia64/hp/common/sba_iommu.c | 87 |
1 files changed, 32 insertions, 55 deletions
diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c index e8a93b07283e..5a361e51cb1e 100644 --- a/arch/ia64/hp/common/sba_iommu.c +++ b/arch/ia64/hp/common/sba_iommu.c @@ -907,11 +907,12 @@ sba_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt) } /** - * sba_map_single_attrs - map one buffer and return IOVA for DMA + * sba_map_page - map one buffer and return IOVA for DMA * @dev: instance of PCI owned by the driver that's asking. - * @addr: driver buffer to map. - * @size: number of bytes to map in driver buffer. - * @dir: R/W or both. + * @page: page to map + * @poff: offset into page + * @size: number of bytes to map + * @dir: dma direction * @attrs: optional dma attributes * * See Documentation/DMA-API-HOWTO.txt @@ -944,7 +945,7 @@ static dma_addr_t sba_map_page(struct device *dev, struct page *page, ** Device is bit capable of DMA'ing to the buffer... ** just return the PCI address of ptr */ - DBG_BYPASS("sba_map_single_attrs() bypass mask/addr: " + DBG_BYPASS("sba_map_page() bypass mask/addr: " "0x%lx/0x%lx\n", to_pci_dev(dev)->dma_mask, pci_addr); return pci_addr; @@ -966,14 +967,14 @@ static dma_addr_t sba_map_page(struct device *dev, struct page *page, #ifdef ASSERT_PDIR_SANITY spin_lock_irqsave(&ioc->res_lock, flags); - if (sba_check_pdir(ioc,"Check before sba_map_single_attrs()")) + if (sba_check_pdir(ioc,"Check before sba_map_page()")) panic("Sanity check failed"); spin_unlock_irqrestore(&ioc->res_lock, flags); #endif pide = sba_alloc_range(ioc, dev, size); if (pide < 0) - return 0; + return DMA_MAPPING_ERROR; iovp = (dma_addr_t) pide << iovp_shift; @@ -997,20 +998,12 @@ static dma_addr_t sba_map_page(struct device *dev, struct page *page, /* form complete address */ #ifdef ASSERT_PDIR_SANITY spin_lock_irqsave(&ioc->res_lock, flags); - sba_check_pdir(ioc,"Check after sba_map_single_attrs()"); + sba_check_pdir(ioc,"Check after sba_map_page()"); spin_unlock_irqrestore(&ioc->res_lock, flags); #endif return SBA_IOVA(ioc, iovp, offset); } -static dma_addr_t sba_map_single_attrs(struct device *dev, void *addr, - size_t size, enum dma_data_direction dir, - unsigned long attrs) -{ - return sba_map_page(dev, virt_to_page(addr), - (unsigned long)addr & ~PAGE_MASK, size, dir, attrs); -} - #ifdef ENABLE_MARK_CLEAN static SBA_INLINE void sba_mark_clean(struct ioc *ioc, dma_addr_t iova, size_t size) @@ -1036,7 +1029,7 @@ sba_mark_clean(struct ioc *ioc, dma_addr_t iova, size_t size) #endif /** - * sba_unmap_single_attrs - unmap one IOVA and free resources + * sba_unmap_page - unmap one IOVA and free resources * @dev: instance of PCI owned by the driver that's asking. * @iova: IOVA of driver buffer previously mapped. * @size: number of bytes mapped in driver buffer. @@ -1063,7 +1056,7 @@ static void sba_unmap_page(struct device *dev, dma_addr_t iova, size_t size, /* ** Address does not fall w/in IOVA, must be bypassing */ - DBG_BYPASS("sba_unmap_single_attrs() bypass addr: 0x%lx\n", + DBG_BYPASS("sba_unmap_page() bypass addr: 0x%lx\n", iova); #ifdef ENABLE_MARK_CLEAN @@ -1114,12 +1107,6 @@ static void sba_unmap_page(struct device *dev, dma_addr_t iova, size_t size, #endif /* DELAYED_RESOURCE_CNT == 0 */ } -void sba_unmap_single_attrs(struct device *dev, dma_addr_t iova, size_t size, - enum dma_data_direction dir, unsigned long attrs) -{ - sba_unmap_page(dev, iova, size, dir, attrs); -} - /** * sba_alloc_coherent - allocate/map shared mem for DMA * @dev: instance of PCI owned by the driver that's asking. @@ -1132,30 +1119,24 @@ static void * sba_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flags, unsigned long attrs) { + struct page *page; struct ioc *ioc; + int node = -1; void *addr; ioc = GET_IOC(dev); ASSERT(ioc); - #ifdef CONFIG_NUMA - { - struct page *page; - - page = alloc_pages_node(ioc->node, flags, get_order(size)); - if (unlikely(!page)) - return NULL; - - addr = page_address(page); - } -#else - addr = (void *) __get_free_pages(flags, get_order(size)); + node = ioc->node; #endif - if (unlikely(!addr)) + + page = alloc_pages_node(node, flags, get_order(size)); + if (unlikely(!page)) return NULL; + addr = page_address(page); memset(addr, 0, size); - *dma_handle = virt_to_phys(addr); + *dma_handle = page_to_phys(page); #ifdef ALLOW_IOV_BYPASS ASSERT(dev->coherent_dma_mask); @@ -1174,9 +1155,10 @@ sba_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, * If device can't bypass or bypass is disabled, pass the 32bit fake * device to map single to get an iova mapping. */ - *dma_handle = sba_map_single_attrs(&ioc->sac_only_dev->dev, addr, - size, 0, 0); - + *dma_handle = sba_map_page(&ioc->sac_only_dev->dev, page, 0, size, + DMA_BIDIRECTIONAL, 0); + if (dma_mapping_error(dev, *dma_handle)) + return NULL; return addr; } @@ -1193,7 +1175,7 @@ sba_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, static void sba_free_coherent(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle, unsigned long attrs) { - sba_unmap_single_attrs(dev, dma_handle, size, 0, 0); + sba_unmap_page(dev, dma_handle, size, 0, 0); free_pages((unsigned long) vaddr, get_order(size)); } @@ -1483,7 +1465,10 @@ static int sba_map_sg_attrs(struct device *dev, struct scatterlist *sglist, /* Fast path single entry scatterlists. */ if (nents == 1) { sglist->dma_length = sglist->length; - sglist->dma_address = sba_map_single_attrs(dev, sba_sg_address(sglist), sglist->length, dir, attrs); + sglist->dma_address = sba_map_page(dev, sg_page(sglist), + sglist->offset, sglist->length, dir, attrs); + if (dma_mapping_error(dev, sglist->dma_address)) + return 0; return 1; } @@ -1572,8 +1557,8 @@ static void sba_unmap_sg_attrs(struct device *dev, struct scatterlist *sglist, while (nents && sglist->dma_length) { - sba_unmap_single_attrs(dev, sglist->dma_address, - sglist->dma_length, dir, attrs); + sba_unmap_page(dev, sglist->dma_address, sglist->dma_length, + dir, attrs); sglist = sg_next(sglist); nents--; } @@ -2080,8 +2065,6 @@ static int __init acpi_sba_ioc_init_acpi(void) /* This has to run before acpi_scan_init(). */ arch_initcall(acpi_sba_ioc_init_acpi); -extern const struct dma_map_ops swiotlb_dma_ops; - static int __init sba_init(void) { @@ -2095,7 +2078,7 @@ sba_init(void) * a successful kdump kernel boot is to use the swiotlb. */ if (is_kdump_kernel()) { - dma_ops = &swiotlb_dma_ops; + dma_ops = NULL; if (swiotlb_late_init_with_default_size(64 * (1<<20)) != 0) panic("Unable to initialize software I/O TLB:" " Try machvec=dig boot option"); @@ -2117,7 +2100,7 @@ sba_init(void) * If we didn't find something sba_iommu can claim, we * need to setup the swiotlb and switch to the dig machvec. */ - dma_ops = &swiotlb_dma_ops; + dma_ops = NULL; if (swiotlb_late_init_with_default_size(64 * (1<<20)) != 0) panic("Unable to find SBA IOMMU or initialize " "software I/O TLB: Try machvec=dig boot option"); @@ -2170,11 +2153,6 @@ static int sba_dma_supported (struct device *dev, u64 mask) return ((mask & 0xFFFFFFFFUL) == 0xFFFFFFFFUL); } -static int sba_dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return 0; -} - __setup("nosbagart", nosbagart); static int __init @@ -2208,7 +2186,6 @@ const struct dma_map_ops sba_dma_ops = { .map_sg = sba_map_sg_attrs, .unmap_sg = sba_unmap_sg_attrs, .dma_supported = sba_dma_supported, - .mapping_error = sba_dma_mapping_error, }; void sba_dma_init(void) |