diff options
| -rw-r--r-- | arch/ia64/Kconfig | 3 | ||||
| -rw-r--r-- | arch/ia64/kernel/dma-mapping.c | 20 | ||||
| -rw-r--r-- | arch/ia64/mm/init.c | 19 | ||||
| -rw-r--r-- | drivers/xen/swiotlb-xen.c | 20 | ||||
| -rw-r--r-- | include/linux/dma-direct.h | 8 | ||||
| -rw-r--r-- | kernel/dma/swiotlb.c | 18 |
6 files changed, 31 insertions, 57 deletions
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index d6f203658994..c587e3316c38 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -28,7 +28,8 @@ config IA64 select HAVE_ARCH_TRACEHOOK select HAVE_MEMBLOCK_NODE_MAP select HAVE_VIRT_CPU_ACCOUNTING - select ARCH_HAS_DMA_MARK_CLEAN + select ARCH_HAS_DMA_COHERENT_TO_PFN + select ARCH_HAS_SYNC_DMA_FOR_CPU select VIRT_TO_BUS select ARCH_DISCARD_MEMBLOCK select GENERIC_IRQ_PROBE diff --git a/arch/ia64/kernel/dma-mapping.c b/arch/ia64/kernel/dma-mapping.c index 7a471d8d67d4..36dd6aa6d759 100644 --- a/arch/ia64/kernel/dma-mapping.c +++ b/arch/ia64/kernel/dma-mapping.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -#include <linux/dma-mapping.h> +#include <linux/dma-direct.h> #include <linux/swiotlb.h> #include <linux/export.h> @@ -16,6 +16,24 @@ const struct dma_map_ops *dma_get_ops(struct device *dev) EXPORT_SYMBOL(dma_get_ops); #ifdef CONFIG_SWIOTLB +void *arch_dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs) +{ + return dma_direct_alloc_pages(dev, size, dma_handle, gfp, attrs); +} + +void arch_dma_free(struct device *dev, size_t size, void *cpu_addr, + dma_addr_t dma_addr, unsigned long attrs) +{ + dma_direct_free_pages(dev, size, cpu_addr, dma_addr, attrs); +} + +long arch_dma_coherent_to_pfn(struct device *dev, void *cpu_addr, + dma_addr_t dma_addr) +{ + return page_to_pfn(virt_to_page(cpu_addr)); +} + void __init swiotlb_dma_init(void) { dma_ops = &swiotlb_dma_ops; diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c index d5e12ff1d73c..0cf43bb13d6e 100644 --- a/arch/ia64/mm/init.c +++ b/arch/ia64/mm/init.c @@ -8,6 +8,7 @@ #include <linux/kernel.h> #include <linux/init.h> +#include <linux/dma-noncoherent.h> #include <linux/efi.h> #include <linux/elf.h> #include <linux/memblock.h> @@ -71,18 +72,14 @@ __ia64_sync_icache_dcache (pte_t pte) * DMA can be marked as "clean" so that lazy_mmu_prot_update() doesn't have to * flush them when they get mapped into an executable vm-area. */ -void -dma_mark_clean(void *addr, size_t size) +void arch_sync_dma_for_cpu(struct device *dev, phys_addr_t paddr, + size_t size, enum dma_data_direction dir) { - unsigned long pg_addr, end; - - pg_addr = PAGE_ALIGN((unsigned long) addr); - end = (unsigned long) addr + size; - while (pg_addr + PAGE_SIZE <= end) { - struct page *page = virt_to_page(pg_addr); - set_bit(PG_arch_1, &page->flags); - pg_addr += PAGE_SIZE; - } + unsigned long pfn = PHYS_PFN(paddr); + + do { + set_bit(PG_arch_1, &pfn_to_page(pfn)->flags); + } while (++pfn <= PHYS_PFN(paddr + size - 1)); } inline void diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index 833e80b46eb2..989cf872b98c 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -441,21 +441,8 @@ static void xen_unmap_single(struct device *hwdev, dma_addr_t dev_addr, xen_dma_unmap_page(hwdev, dev_addr, size, dir, attrs); /* NOTE: We use dev_addr here, not paddr! */ - if (is_xen_swiotlb_buffer(dev_addr)) { + if (is_xen_swiotlb_buffer(dev_addr)) swiotlb_tbl_unmap_single(hwdev, paddr, size, dir, attrs); - return; - } - - if (dir != DMA_FROM_DEVICE) - return; - - /* - * phys_to_virt doesn't work with hihgmem page but we could - * call dma_mark_clean() with hihgmem page here. However, we - * are fine since dma_mark_clean() is null on POWERPC. We can - * make dma_mark_clean() take a physical address if necessary. - */ - dma_mark_clean(phys_to_virt(paddr), size); } static void xen_swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr, @@ -493,11 +480,6 @@ xen_swiotlb_sync_single(struct device *hwdev, dma_addr_t dev_addr, if (target == SYNC_FOR_DEVICE) xen_dma_sync_single_for_device(hwdev, dev_addr, size, dir); - - if (dir != DMA_FROM_DEVICE) - return; - - dma_mark_clean(phys_to_virt(paddr), size); } void diff --git a/include/linux/dma-direct.h b/include/linux/dma-direct.h index 6e5a47ae7d64..1aa73f4907ae 100644 --- a/include/linux/dma-direct.h +++ b/include/linux/dma-direct.h @@ -48,14 +48,6 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) return __sme_clr(__dma_to_phys(dev, daddr)); } -#ifdef CONFIG_ARCH_HAS_DMA_MARK_CLEAN -void dma_mark_clean(void *addr, size_t size); -#else -static inline void dma_mark_clean(void *addr, size_t size) -{ -} -#endif /* CONFIG_ARCH_HAS_DMA_MARK_CLEAN */ - u64 dma_direct_get_required_mask(struct device *dev); void *dma_direct_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs); diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 19ba8e473d71..2e126bac5d7d 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -706,21 +706,8 @@ void swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr, (attrs & DMA_ATTR_SKIP_CPU_SYNC) == 0) arch_sync_dma_for_cpu(hwdev, paddr, size, dir); - if (is_swiotlb_buffer(paddr)) { + if (is_swiotlb_buffer(paddr)) swiotlb_tbl_unmap_single(hwdev, paddr, size, dir, attrs); - return; - } - - if (dir != DMA_FROM_DEVICE) - return; - - /* - * phys_to_virt doesn't work with hihgmem page but we could - * call dma_mark_clean() with hihgmem page here. However, we - * are fine since dma_mark_clean() is null on POWERPC. We can - * make dma_mark_clean() take a physical address if necessary. - */ - dma_mark_clean(phys_to_virt(paddr), size); } /* @@ -750,9 +737,6 @@ swiotlb_sync_single(struct device *hwdev, dma_addr_t dev_addr, if (!dev_is_dma_coherent(hwdev) && target == SYNC_FOR_DEVICE) arch_sync_dma_for_device(hwdev, paddr, size, dir); - - if (!is_swiotlb_buffer(paddr) && dir == DMA_FROM_DEVICE) - dma_mark_clean(phys_to_virt(paddr), size); } void |