* [U-Boot] [PATCH] nios2: add dma_alloc_coherent with asm-nios2/dma-mapping.h
@ 2010-03-24 6:40 Thomas Chou
2010-03-25 9:45 ` [U-Boot] [PATCH v2] " Thomas Chou
2010-04-17 15:34 ` [U-Boot] [PATCH v3] nios2: add dma_alloc_coherent Thomas Chou
0 siblings, 2 replies; 4+ messages in thread
From: Thomas Chou @ 2010-03-24 6:40 UTC (permalink / raw)
To: u-boot
This function return cache-line aligned allocation which is mapped
to uncached io region.
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
---
include/asm-nios2/dma-mapping.h | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+), 0 deletions(-)
create mode 100644 include/asm-nios2/dma-mapping.h
diff --git a/include/asm-nios2/dma-mapping.h b/include/asm-nios2/dma-mapping.h
new file mode 100644
index 0000000..1fa19ac
--- /dev/null
+++ b/include/asm-nios2/dma-mapping.h
@@ -0,0 +1,21 @@
+#ifndef __ASM_NIOS2_DMA_MAPPING_H
+#define __ASM_NIOS2_DMA_MAPPING_H
+
+/* dma_alloc_coherent() return cache-line aligned allocation which is mapped
+ * to uncached io region.
+ *
+ * IO_REGION_BASE should be defined in board config header file
+ * 0x80000000 for nommu, 0xe0000000 for mmu
+ */
+
+static inline void *dma_alloc_coherent(size_t len, unsigned long *handle)
+{
+ void *addr = malloc(len + CONFIG_SYS_DCACHELINE_SIZE);
+ flush_dcache((unsigned long)addr, len + CONFIG_SYS_DCACHELINE_SIZE);
+ *handle = ((unsigned long)addr +
+ (CONFIG_SYS_DCACHELINE_SIZE - 1)) &
+ ~(CONFIG_SYS_DCACHELINE_SIZE - 1) & ~(IO_REGION_BASE);
+ return (void *)(*handle | IO_REGION_BASE);
+}
+
+#endif /* __ASM_NIOS2_DMA_MAPPING_H */
--
1.6.6.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* [U-Boot] [PATCH v2] nios2: add dma_alloc_coherent with asm-nios2/dma-mapping.h
2010-03-24 6:40 [U-Boot] [PATCH] nios2: add dma_alloc_coherent with asm-nios2/dma-mapping.h Thomas Chou
@ 2010-03-25 9:45 ` Thomas Chou
2010-04-17 15:34 ` [U-Boot] [PATCH v3] nios2: add dma_alloc_coherent Thomas Chou
1 sibling, 0 replies; 4+ messages in thread
From: Thomas Chou @ 2010-03-25 9:45 UTC (permalink / raw)
To: u-boot
This function return cache-line aligned allocation which is mapped
to uncached io region.
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
---
include/asm-nios2/dma-mapping.h | 23 +++++++++++++++++++++++
1 files changed, 23 insertions(+), 0 deletions(-)
create mode 100644 include/asm-nios2/dma-mapping.h
diff --git a/include/asm-nios2/dma-mapping.h b/include/asm-nios2/dma-mapping.h
new file mode 100644
index 0000000..1350e3b
--- /dev/null
+++ b/include/asm-nios2/dma-mapping.h
@@ -0,0 +1,23 @@
+#ifndef __ASM_NIOS2_DMA_MAPPING_H
+#define __ASM_NIOS2_DMA_MAPPING_H
+
+/* dma_alloc_coherent() return cache-line aligned allocation which is mapped
+ * to uncached io region.
+ *
+ * IO_REGION_BASE should be defined in board config header file
+ * 0x80000000 for nommu, 0xe0000000 for mmu
+ */
+
+static inline void *dma_alloc_coherent(size_t len, unsigned long *handle)
+{
+ void *addr = malloc(len + CONFIG_SYS_DCACHELINE_SIZE);
+ if (!addr)
+ return 0;
+ flush_dcache((unsigned long)addr, len + CONFIG_SYS_DCACHELINE_SIZE);
+ *handle = ((unsigned long)addr +
+ (CONFIG_SYS_DCACHELINE_SIZE - 1)) &
+ ~(CONFIG_SYS_DCACHELINE_SIZE - 1) & ~(IO_REGION_BASE);
+ return (void *)(*handle | IO_REGION_BASE);
+}
+
+#endif /* __ASM_NIOS2_DMA_MAPPING_H */
--
1.6.6.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* [U-Boot] [PATCH v3] nios2: add dma_alloc_coherent
2010-03-24 6:40 [U-Boot] [PATCH] nios2: add dma_alloc_coherent with asm-nios2/dma-mapping.h Thomas Chou
2010-03-25 9:45 ` [U-Boot] [PATCH v2] " Thomas Chou
@ 2010-04-17 15:34 ` Thomas Chou
2010-04-23 0:05 ` Scott McNutt
1 sibling, 1 reply; 4+ messages in thread
From: Thomas Chou @ 2010-04-17 15:34 UTC (permalink / raw)
To: u-boot
This function return cache-line aligned allocation which is mapped
to uncached io region.
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
---
arch dir reorganized.
arch/nios2/include/asm/dma-mapping.h | 23 +++++++++++++++++++++++
1 files changed, 23 insertions(+), 0 deletions(-)
create mode 100644 arch/nios2/include/asm/dma-mapping.h
diff --git a/arch/nios2/include/asm/dma-mapping.h b/arch/nios2/include/asm/dma-mapping.h
new file mode 100644
index 0000000..1350e3b
--- /dev/null
+++ b/arch/nios2/include/asm/dma-mapping.h
@@ -0,0 +1,23 @@
+#ifndef __ASM_NIOS2_DMA_MAPPING_H
+#define __ASM_NIOS2_DMA_MAPPING_H
+
+/* dma_alloc_coherent() return cache-line aligned allocation which is mapped
+ * to uncached io region.
+ *
+ * IO_REGION_BASE should be defined in board config header file
+ * 0x80000000 for nommu, 0xe0000000 for mmu
+ */
+
+static inline void *dma_alloc_coherent(size_t len, unsigned long *handle)
+{
+ void *addr = malloc(len + CONFIG_SYS_DCACHELINE_SIZE);
+ if (!addr)
+ return 0;
+ flush_dcache((unsigned long)addr, len + CONFIG_SYS_DCACHELINE_SIZE);
+ *handle = ((unsigned long)addr +
+ (CONFIG_SYS_DCACHELINE_SIZE - 1)) &
+ ~(CONFIG_SYS_DCACHELINE_SIZE - 1) & ~(IO_REGION_BASE);
+ return (void *)(*handle | IO_REGION_BASE);
+}
+
+#endif /* __ASM_NIOS2_DMA_MAPPING_H */
--
1.6.6.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* [U-Boot] [PATCH v3] nios2: add dma_alloc_coherent
2010-04-17 15:34 ` [U-Boot] [PATCH v3] nios2: add dma_alloc_coherent Thomas Chou
@ 2010-04-23 0:05 ` Scott McNutt
0 siblings, 0 replies; 4+ messages in thread
From: Scott McNutt @ 2010-04-23 0:05 UTC (permalink / raw)
To: u-boot
Applied. Thanks.
--Scott
Thomas Chou wrote:
> This function return cache-line aligned allocation which is mapped
> to uncached io region.
>
> Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
> ---
> arch dir reorganized.
>
> arch/nios2/include/asm/dma-mapping.h | 23 +++++++++++++++++++++++
> 1 files changed, 23 insertions(+), 0 deletions(-)
> create mode 100644 arch/nios2/include/asm/dma-mapping.h
>
> diff --git a/arch/nios2/include/asm/dma-mapping.h b/arch/nios2/include/asm/dma-mapping.h
> new file mode 100644
> index 0000000..1350e3b
> --- /dev/null
> +++ b/arch/nios2/include/asm/dma-mapping.h
> @@ -0,0 +1,23 @@
> +#ifndef __ASM_NIOS2_DMA_MAPPING_H
> +#define __ASM_NIOS2_DMA_MAPPING_H
> +
> +/* dma_alloc_coherent() return cache-line aligned allocation which is mapped
> + * to uncached io region.
> + *
> + * IO_REGION_BASE should be defined in board config header file
> + * 0x80000000 for nommu, 0xe0000000 for mmu
> + */
> +
> +static inline void *dma_alloc_coherent(size_t len, unsigned long *handle)
> +{
> + void *addr = malloc(len + CONFIG_SYS_DCACHELINE_SIZE);
> + if (!addr)
> + return 0;
> + flush_dcache((unsigned long)addr, len + CONFIG_SYS_DCACHELINE_SIZE);
> + *handle = ((unsigned long)addr +
> + (CONFIG_SYS_DCACHELINE_SIZE - 1)) &
> + ~(CONFIG_SYS_DCACHELINE_SIZE - 1) & ~(IO_REGION_BASE);
> + return (void *)(*handle | IO_REGION_BASE);
> +}
> +
> +#endif /* __ASM_NIOS2_DMA_MAPPING_H */
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-04-23 0:05 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2010-03-24 6:40 [U-Boot] [PATCH] nios2: add dma_alloc_coherent with asm-nios2/dma-mapping.h Thomas Chou
2010-03-25 9:45 ` [U-Boot] [PATCH v2] " Thomas Chou
2010-04-17 15:34 ` [U-Boot] [PATCH v3] nios2: add dma_alloc_coherent Thomas Chou
2010-04-23 0:05 ` Scott McNutt
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