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authorRussell King <rmk+kernel@arm.linux.org.uk>2014-06-05 12:36:22 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2014-06-05 12:36:22 +0100
commitbd63ce27d9d62bc40a962b991cbbbe4f0dc913d2 (patch)
treebd998b187b7ea4e9f28c0c61912b701bc6ff6420 /arch/arm
parent1fb333489fb917c704ad43e51b45c12f52215a9c (diff)
parent6b74f61a471ad0f3a5e919e314d4f60cd3966f5e (diff)
downloadlinux-bd63ce27d9d62bc40a962b991cbbbe4f0dc913d2.tar.bz2
Merge branch 'devel-stable' into for-next
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/include/asm/dma-mapping.h25
-rw-r--r--arch/arm/mm/dma-mapping.c4
2 files changed, 26 insertions, 3 deletions
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index e701a4d9aa59..c45b61a4b4a5 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -58,21 +58,37 @@ static inline int dma_set_mask(struct device *dev, u64 mask)
#ifndef __arch_pfn_to_dma
static inline dma_addr_t pfn_to_dma(struct device *dev, unsigned long pfn)
{
+ if (dev)
+ pfn -= dev->dma_pfn_offset;
return (dma_addr_t)__pfn_to_bus(pfn);
}
static inline unsigned long dma_to_pfn(struct device *dev, dma_addr_t addr)
{
- return __bus_to_pfn(addr);
+ unsigned long pfn = __bus_to_pfn(addr);
+
+ if (dev)
+ pfn += dev->dma_pfn_offset;
+
+ return pfn;
}
static inline void *dma_to_virt(struct device *dev, dma_addr_t addr)
{
+ if (dev) {
+ unsigned long pfn = dma_to_pfn(dev, addr);
+
+ return phys_to_virt(__pfn_to_phys(pfn));
+ }
+
return (void *)__bus_to_virt((unsigned long)addr);
}
static inline dma_addr_t virt_to_dma(struct device *dev, void *addr)
{
+ if (dev)
+ return pfn_to_dma(dev, virt_to_pfn(addr));
+
return (dma_addr_t)__virt_to_bus((unsigned long)(addr));
}
@@ -105,6 +121,13 @@ static inline unsigned long dma_max_pfn(struct device *dev)
}
#define dma_max_pfn(dev) dma_max_pfn(dev)
+static inline int set_arch_dma_coherent_ops(struct device *dev)
+{
+ set_dma_ops(dev, &arm_coherent_dma_ops);
+ return 0;
+}
+#define set_arch_dma_coherent_ops(dev) set_arch_dma_coherent_ops(dev)
+
static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
{
unsigned int offset = paddr & ~PAGE_MASK;
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index b05e08c4734c..85a109bf2e2e 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -885,7 +885,7 @@ static void dma_cache_maint_page(struct page *page, unsigned long offset,
static void __dma_page_cpu_to_dev(struct page *page, unsigned long off,
size_t size, enum dma_data_direction dir)
{
- unsigned long paddr;
+ phys_addr_t paddr;
dma_cache_maint_page(page, off, size, dir, dmac_map_area);
@@ -901,7 +901,7 @@ static void __dma_page_cpu_to_dev(struct page *page, unsigned long off,
static void __dma_page_dev_to_cpu(struct page *page, unsigned long off,
size_t size, enum dma_data_direction dir)
{
- unsigned long paddr = page_to_phys(page) + off;
+ phys_addr_t paddr = page_to_phys(page) + off;
/* FIXME: non-speculating: not required */
/* in any case, don't bother invalidating if DMA to device */