From 78b09735a2f42f32c4611d92ea51755e1faae385 Mon Sep 17 00:00:00 2001
From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Sat, 19 Nov 2005 01:40:46 +1100
Subject: [PATCH] powerpc: merge dma-mapping.h
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
.../{asm-ppc => asm-powerpc}/dma-mapping.h | 128 ++++++++++++-----
include/asm-ppc64/dma-mapping.h | 136 ------------------
2 files changed, 93 insertions(+), 171 deletions(-)
rename include/{asm-ppc => asm-powerpc}/dma-mapping.h (56%)
delete mode 100644 include/asm-ppc64/dma-mapping.h
diff --git a/include/asm-ppc/dma-mapping.h b/include/asm-powerpc/dma-mapping.h
similarity index 56%
rename from include/asm-ppc/dma-mapping.h
rename to include/asm-powerpc/dma-mapping.h
index 798602620e87b..59a80163f75fb 100644
--- a/include/asm-ppc/dma-mapping.h
+++ b/include/asm-powerpc/dma-mapping.h
@@ -1,15 +1,22 @@
/*
- * This is based on both include/asm-sh/dma-mapping.h and
- * include/asm-ppc/pci.h
+ * Copyright (C) 2004 IBM
+ *
+ * Implements the generic device dma API for powerpc.
+ * the pci and vio busses
*/
-#ifndef __ASM_PPC_DMA_MAPPING_H
-#define __ASM_PPC_DMA_MAPPING_H
+#ifndef _ASM_DMA_MAPPING_H
+#define _ASM_DMA_MAPPING_H
#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/cache.h>
/* need struct page definitions */
#include <linux/mm.h>
#include <asm/scatterlist.h>
#include <asm/io.h>
+#include <asm/bug.h>
+
+#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
#ifdef CONFIG_NOT_COHERENT_CACHE
/*
@@ -37,6 +44,30 @@ extern void __dma_sync_page(struct page *page, unsigned long offset,
#endif /* ! CONFIG_NOT_COHERENT_CACHE */
+#ifdef CONFIG_PPC64
+
+extern int dma_supported(struct device *dev, u64 mask);
+extern int dma_set_mask(struct device *dev, u64 dma_mask);
+extern void *dma_alloc_coherent(struct device *dev, size_t size,
+ dma_addr_t *dma_handle, gfp_t flag);
+extern void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
+ dma_addr_t dma_handle);
+extern dma_addr_t dma_map_single(struct device *dev, void *cpu_addr,
+ size_t size, enum dma_data_direction direction);
+extern void dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
+ size_t size, enum dma_data_direction direction);
+extern dma_addr_t dma_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction direction);
+extern void dma_unmap_page(struct device *dev, dma_addr_t dma_address,
+ size_t size, enum dma_data_direction direction);
+extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
+ enum dma_data_direction direction);
+extern void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
+ int nhwentries, enum dma_data_direction direction);
+
+#else /* CONFIG_PPC64 */
+
#define dma_supported(dev, mask) (1)
static inline int dma_set_mask(struct device *dev, u64 dma_mask)
@@ -134,29 +165,27 @@ dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
/* We don't do anything here. */
#define dma_unmap_sg(dev, sg, nents, dir) do { } while (0)
-static inline void
-dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
- size_t size,
- enum dma_data_direction direction)
+#endif /* CONFIG_PPC64 */
+
+static inline void dma_sync_single_for_cpu(struct device *dev,
+ dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction direction)
{
BUG_ON(direction == DMA_NONE);
-
__dma_sync(bus_to_virt(dma_handle), size, direction);
}
-static inline void
-dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
- size_t size,
- enum dma_data_direction direction)
+static inline void dma_sync_single_for_device(struct device *dev,
+ dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction direction)
{
BUG_ON(direction == DMA_NONE);
-
__dma_sync(bus_to_virt(dma_handle), size, direction);
}
-static inline void
-dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction direction)
+static inline void dma_sync_sg_for_cpu(struct device *dev,
+ struct scatterlist *sg, int nents,
+ enum dma_data_direction direction)
{
int i;
@@ -166,9 +195,9 @@ dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nents,
__dma_sync_page(sg->page, sg->offset, sg->length, direction);
}
-static inline void
-dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction direction)
+static inline void dma_sync_sg_for_device(struct device *dev,
+ struct scatterlist *sg, int nents,
+ enum dma_data_direction direction)
{
int i;
@@ -178,6 +207,15 @@ dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents,
__dma_sync_page(sg->page, sg->offset, sg->length, direction);
}
+static inline int dma_mapping_error(dma_addr_t dma_addr)
+{
+#ifdef CONFIG_PPC64
+ return (dma_addr == DMA_ERROR_CODE);
+#else
+ return 0;
+#endif
+}
+
#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
#ifdef CONFIG_NOT_COHERENT_CACHE
@@ -188,40 +226,60 @@ dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents,
static inline int dma_get_cache_alignment(void)
{
+#ifdef CONFIG_PPC64
+ /* no easy way to get cache size on all processors, so return
+ * the maximum possible, to be safe */
+ return (1 << L1_CACHE_SHIFT_MAX);
+#else
/*
* Each processor family will define its own L1_CACHE_SHIFT,
* L1_CACHE_BYTES wraps to this, so this is always safe.
*/
return L1_CACHE_BYTES;
+#endif
}
-static inline void
-dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
- unsigned long offset, size_t size,
- enum dma_data_direction direction)
+static inline void dma_sync_single_range_for_cpu(struct device *dev,
+ dma_addr_t dma_handle, unsigned long offset, size_t size,
+ enum dma_data_direction direction)
{
/* just sync everything for now */
dma_sync_single_for_cpu(dev, dma_handle, offset + size, direction);
}
-static inline void
-dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
- unsigned long offset, size_t size,
- enum dma_data_direction direction)
+static inline void dma_sync_single_range_for_device(struct device *dev,
+ dma_addr_t dma_handle, unsigned long offset, size_t size,
+ enum dma_data_direction direction)
{
/* just sync everything for now */
dma_sync_single_for_device(dev, dma_handle, offset + size, direction);
}
static inline void dma_cache_sync(void *vaddr, size_t size,
- enum dma_data_direction direction)
+ enum dma_data_direction direction)
{
+ BUG_ON(direction == DMA_NONE);
__dma_sync(vaddr, size, (int)direction);
}
-static inline int dma_mapping_error(dma_addr_t dma_addr)
-{
- return 0;
-}
-
-#endif /* __ASM_PPC_DMA_MAPPING_H */
+/*
+ * DMA operations are abstracted for G5 vs. i/pSeries, PCI vs. VIO
+ */
+struct dma_mapping_ops {
+ void * (*alloc_coherent)(struct device *dev, size_t size,
+ dma_addr_t *dma_handle, gfp_t flag);
+ void (*free_coherent)(struct device *dev, size_t size,
+ void *vaddr, dma_addr_t dma_handle);
+ dma_addr_t (*map_single)(struct device *dev, void *ptr,
+ size_t size, enum dma_data_direction direction);
+ void (*unmap_single)(struct device *dev, dma_addr_t dma_addr,
+ size_t size, enum dma_data_direction direction);
+ int (*map_sg)(struct device *dev, struct scatterlist *sg,
+ int nents, enum dma_data_direction direction);
+ void (*unmap_sg)(struct device *dev, struct scatterlist *sg,
+ int nents, enum dma_data_direction direction);
+ int (*dma_supported)(struct device *dev, u64 mask);
+ int (*dac_dma_supported)(struct device *dev, u64 mask);
+};
+
+#endif /* _ASM_DMA_MAPPING_H */
diff --git a/include/asm-ppc64/dma-mapping.h b/include/asm-ppc64/dma-mapping.h
deleted file mode 100644
index fb68fa23bea84..0000000000000
--- a/include/asm-ppc64/dma-mapping.h
+++ /dev/null
@@ -1,136 +0,0 @@
-/* Copyright (C) 2004 IBM
- *
- * Implements the generic device dma API for ppc64. Handles
- * the pci and vio busses
- */
-
-#ifndef _ASM_DMA_MAPPING_H
-#define _ASM_DMA_MAPPING_H
-
-#include <linux/types.h>
-#include <linux/cache.h>
-/* need struct page definitions */
-#include <linux/mm.h>
-#include <asm/scatterlist.h>
-#include <asm/bug.h>
-
-#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
-
-extern int dma_supported(struct device *dev, u64 mask);
-extern int dma_set_mask(struct device *dev, u64 dma_mask);
-extern void *dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t flag);
-extern void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
- dma_addr_t dma_handle);
-extern dma_addr_t dma_map_single(struct device *dev, void *cpu_addr,
- size_t size, enum dma_data_direction direction);
-extern void dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
- size_t size, enum dma_data_direction direction);
-extern dma_addr_t dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size,
- enum dma_data_direction direction);
-extern void dma_unmap_page(struct device *dev, dma_addr_t dma_address,
- size_t size, enum dma_data_direction direction);
-extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction direction);
-extern void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
- int nhwentries, enum dma_data_direction direction);
-
-static inline void
-dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
- /* nothing to do */
-}
-
-static inline void
-dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
- /* nothing to do */
-}
-
-static inline void
-dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
- /* nothing to do */
-}
-
-static inline void
-dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
- /* nothing to do */
-}
-
-static inline int dma_mapping_error(dma_addr_t dma_addr)
-{
- return (dma_addr == DMA_ERROR_CODE);
-}
-
-/* Now for the API extensions over the pci_ one */
-
-#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
-#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
-#define dma_is_consistent(d) (1)
-
-static inline int
-dma_get_cache_alignment(void)
-{
- /* no easy way to get cache size on all processors, so return
- * the maximum possible, to be safe */
- return (1 << L1_CACHE_SHIFT_MAX);
-}
-
-static inline void
-dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
- unsigned long offset, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
- /* nothing to do */
-}
-
-static inline void
-dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
- unsigned long offset, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
- /* nothing to do */
-}
-
-static inline void
-dma_cache_sync(void *vaddr, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
- /* nothing to do */
-}
-
-/*
- * DMA operations are abstracted for G5 vs. i/pSeries, PCI vs. VIO
- */
-struct dma_mapping_ops {
- void * (*alloc_coherent)(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t flag);
- void (*free_coherent)(struct device *dev, size_t size,
- void *vaddr, dma_addr_t dma_handle);
- dma_addr_t (*map_single)(struct device *dev, void *ptr,
- size_t size, enum dma_data_direction direction);
- void (*unmap_single)(struct device *dev, dma_addr_t dma_addr,
- size_t size, enum dma_data_direction direction);
- int (*map_sg)(struct device *dev, struct scatterlist *sg,
- int nents, enum dma_data_direction direction);
- void (*unmap_sg)(struct device *dev, struct scatterlist *sg,
- int nents, enum dma_data_direction direction);
- int (*dma_supported)(struct device *dev, u64 mask);
- int (*dac_dma_supported)(struct device *dev, u64 mask);
-};
-
-#endif /* _ASM_DMA_MAPPING_H */
--
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