path: root/arch/arm/include/asm
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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-02 19:13:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-02 19:13:12 -0700
commitca41cc96b2813221b05af57d0355157924de5a07 (patch)
tree093d4ca55e6dc4f77c7c8486ec47e9e625e84f17 /arch/arm/include/asm
parentMerge tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi (diff)
parentMerge branch 'next-cleanup' into for-v3.7 (diff)
Merge branch 'for-v3.7' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping
Pull CMA and DMA-mapping updates from Marek Szyprowski: "This time the pull request is rather small, because the further redesign patches were not ready on time. This pull request consists of the patches which extend ARM DMA-mapping subsystem with support for CPU coherent (ACP) DMA busses. The first client of the new version is HighBank SATA driver. The second part of the pull request includes various cleanup for both CMA common code and ARM DMA-mapping subsystem." Fix up trivial add-add conflict due to the "dma-coherent" DT property being added next to the "calxeda,port-phys" property for the Calxeda AHCI controller. * 'for-v3.7' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping: ARM: dma-mapping: Remove unsed var at arm_coherent_iommu_unmap_page ARM: highbank: add coherent DMA setup ARM: kill off arch_is_coherent ARM: add coherent iommu dma ops ARM: add coherent dma ops ARM: dma-mapping: Refrain noisy console message ARM: dma-mapping: Small logical clean up drivers: dma-contiguous: refactor dma_alloc_from_contiguous()
Diffstat (limited to 'arch/arm/include/asm')
3 files changed, 4 insertions, 12 deletions
diff --git a/arch/arm/include/asm/barrier.h b/arch/arm/include/asm/barrier.h
index 05112380dc53..8dcd9c702d90 100644
--- a/arch/arm/include/asm/barrier.h
+++ b/arch/arm/include/asm/barrier.h
@@ -44,10 +44,9 @@
#define rmb() dsb()
#define wmb() mb()
-#include <asm/memory.h>
-#define mb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0)
-#define rmb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0)
-#define wmb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0)
+#define mb() barrier()
+#define rmb() barrier()
+#define wmb() barrier()
#ifndef CONFIG_SMP
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index 5c44dcb0987b..23004847bb05 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -13,6 +13,7 @@
#define DMA_ERROR_CODE (~0)
extern struct dma_map_ops arm_dma_ops;
+extern struct dma_map_ops arm_coherent_dma_ops;
static inline struct dma_map_ops *get_dma_ops(struct device *dev)
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index 5f6ddcc56452..73cf03aa981e 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -275,14 +275,6 @@ static inline __deprecated void *bus_to_virt(unsigned long x)
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define virt_addr_valid(kaddr) ((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory)
- * Optional coherency support. Currently used only by selected
- * Intel XSC3-based systems.
- */
-#ifndef arch_is_coherent
-#define arch_is_coherent() 0
#include <asm-generic/memory_model.h>