diff options
Diffstat (limited to 'arch/arm/xen/mm.c')
| -rw-r--r-- | arch/arm/xen/mm.c | 34 |
1 files changed, 17 insertions, 17 deletions
diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c index d40e9e5fc52b..396797ffe2b1 100644 --- a/arch/arm/xen/mm.c +++ b/arch/arm/xen/mm.c @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0-only #include <linux/cpu.h> +#include <linux/dma-direct.h> #include <linux/dma-noncoherent.h> #include <linux/gfp.h> #include <linux/highmem.h> @@ -42,15 +43,18 @@ unsigned long xen_get_swiotlb_free_pages(unsigned int order) static bool hypercall_cflush = false; /* buffers in highmem or foreign pages cannot cross page boundaries */ -static void dma_cache_maint(dma_addr_t handle, size_t size, u32 op) +static void dma_cache_maint(struct device *dev, dma_addr_t handle, + size_t size, u32 op) { struct gnttab_cache_flush cflush; - cflush.a.dev_bus_addr = handle & XEN_PAGE_MASK; cflush.offset = xen_offset_in_page(handle); cflush.op = op; + handle &= XEN_PAGE_MASK; do { + cflush.a.dev_bus_addr = dma_to_phys(dev, handle); + if (size + cflush.offset > XEN_PAGE_SIZE) cflush.length = XEN_PAGE_SIZE - cflush.offset; else @@ -59,7 +63,7 @@ static void dma_cache_maint(dma_addr_t handle, size_t size, u32 op) HYPERVISOR_grant_table_op(GNTTABOP_cache_flush, &cflush, 1); cflush.offset = 0; - cflush.a.dev_bus_addr += cflush.length; + handle += cflush.length; size -= cflush.length; } while (size); } @@ -71,24 +75,20 @@ static void dma_cache_maint(dma_addr_t handle, size_t size, u32 op) * pfn_valid returns true the pages is local and we can use the native * dma-direct functions, otherwise we call the Xen specific version. */ -void xen_dma_sync_for_cpu(dma_addr_t handle, phys_addr_t paddr, size_t size, - enum dma_data_direction dir) +void xen_dma_sync_for_cpu(struct device *dev, dma_addr_t handle, + size_t size, enum dma_data_direction dir) { - if (pfn_valid(PFN_DOWN(handle))) - arch_sync_dma_for_cpu(paddr, size, dir); - else if (dir != DMA_TO_DEVICE) - dma_cache_maint(handle, size, GNTTAB_CACHE_INVAL); + if (dir != DMA_TO_DEVICE) + dma_cache_maint(dev, handle, size, GNTTAB_CACHE_INVAL); } -void xen_dma_sync_for_device(dma_addr_t handle, phys_addr_t paddr, size_t size, - enum dma_data_direction dir) +void xen_dma_sync_for_device(struct device *dev, dma_addr_t handle, + size_t size, enum dma_data_direction dir) { - if (pfn_valid(PFN_DOWN(handle))) - arch_sync_dma_for_device(paddr, size, dir); - else if (dir == DMA_FROM_DEVICE) - dma_cache_maint(handle, size, GNTTAB_CACHE_INVAL); + if (dir == DMA_FROM_DEVICE) + dma_cache_maint(dev, handle, size, GNTTAB_CACHE_INVAL); else - dma_cache_maint(handle, size, GNTTAB_CACHE_CLEAN); + dma_cache_maint(dev, handle, size, GNTTAB_CACHE_CLEAN); } bool xen_arch_need_swiotlb(struct device *dev, @@ -96,7 +96,7 @@ bool xen_arch_need_swiotlb(struct device *dev, dma_addr_t dev_addr) { unsigned int xen_pfn = XEN_PFN_DOWN(phys); - unsigned int bfn = XEN_PFN_DOWN(dev_addr); + unsigned int bfn = XEN_PFN_DOWN(dma_to_phys(dev, dev_addr)); /* * The swiotlb buffer should be used if |