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authorAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
committerAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
commitaf1a266670d040d2f4083ff309d732d648afba2a (patch)
tree2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/arch/nios2/include/asm/dma-mapping.h
parente02cda008591317b1625707ff8e115a4841aa889 (diff)
Add submodule dependency filesHEADmaster
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/arch/nios2/include/asm/dma-mapping.h')
-rw-r--r--roms/u-boot/arch/nios2/include/asm/dma-mapping.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/roms/u-boot/arch/nios2/include/asm/dma-mapping.h b/roms/u-boot/arch/nios2/include/asm/dma-mapping.h
new file mode 100644
index 000000000..65f67bc1f
--- /dev/null
+++ b/roms/u-boot/arch/nios2/include/asm/dma-mapping.h
@@ -0,0 +1,24 @@
+#ifndef __ASM_NIOS2_DMA_MAPPING_H
+#define __ASM_NIOS2_DMA_MAPPING_H
+
+#include <memalign.h>
+#include <asm/io.h>
+
+/*
+ * dma_alloc_coherent() return cache-line aligned allocation which is mapped
+ * to uncached io region.
+ */
+static inline void *dma_alloc_coherent(size_t len, unsigned long *handle)
+{
+ unsigned long addr = (unsigned long)malloc_cache_aligned(len);
+
+ if (!addr)
+ return NULL;
+
+ invalidate_dcache_range(addr, addr + len);
+ if (handle)
+ *handle = addr;
+
+ return map_physmem(addr, len, MAP_NOCACHE);
+}
+#endif /* __ASM_NIOS2_DMA_MAPPING_H */