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Message-Id: <1439795216-32189-5-git-send-email-hch@lst.de>
Date: Mon, 17 Aug 2015 09:06:55 +0200
From: Christoph Hellwig <hch@....de>
To: akpm@...ux-foundation.org
Cc: arnd@...db.de, linux@....linux.org.uk, catalin.marinas@....com,
will.deacon@....com, ysato@...rs.sourceforge.jp, monstr@...str.eu,
jonas@...thpole.se, cmetcalf@...hip.com, gxt@...c.pku.edu.cn,
x86@...nel.org, linux-alpha@...r.kernel.org,
linux-hexagon@...r.kernel.org, linux-ia64@...r.kernel.org,
linux-mips@...ux-mips.org, linuxppc-dev@...ts.ozlabs.org,
linux-s390@...r.kernel.org, linux-sh@...r.kernel.org,
sparclinux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 4/5] dma-mapping: consolidate dma_supported
Most architectures just call into ->dma_supported, but some also return 1
if the method is not present, or 0 if no dma ops are present (although
that should never happeb). Consolidate this more broad version into
common code.
Also fix h8300 which inorrectly always returned 0, which would have been
a problem if it's dma_set_mask implementation wasn't a similarly buggy
noop.
As a few architectures have much more elaborate implementations, we
still allow for arch overrides.
Signed-off-by: Christoph Hellwig <hch@....de>
---
arch/alpha/include/asm/dma-mapping.h | 5 -----
arch/arm/include/asm/dma-mapping.h | 6 +++---
arch/arm64/include/asm/dma-mapping.h | 6 ------
arch/h8300/include/asm/dma-mapping.h | 5 -----
arch/hexagon/include/asm/dma-mapping.h | 1 +
arch/ia64/include/asm/dma-mapping.h | 6 ------
arch/microblaze/include/asm/dma-mapping.h | 13 +------------
arch/mips/include/asm/dma-mapping.h | 6 ------
arch/openrisc/include/asm/dma-mapping.h | 5 +++--
arch/powerpc/include/asm/dma-mapping.h | 11 -----------
arch/s390/include/asm/dma-mapping.h | 9 ---------
arch/sh/include/asm/dma-mapping.h | 10 ----------
arch/sparc/include/asm/dma-mapping.h | 1 +
arch/tile/include/asm/dma-mapping.h | 6 ------
arch/unicore32/include/asm/dma-mapping.h | 10 ----------
arch/x86/include/asm/dma-mapping.h | 4 +++-
include/asm-generic/dma-mapping-common.h | 13 +++++++++++++
17 files changed, 25 insertions(+), 92 deletions(-)
diff --git a/arch/alpha/include/asm/dma-mapping.h b/arch/alpha/include/asm/dma-mapping.h
index 80ac3e8..9d763e5 100644
--- a/arch/alpha/include/asm/dma-mapping.h
+++ b/arch/alpha/include/asm/dma-mapping.h
@@ -12,11 +12,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
#include <asm-generic/dma-mapping-common.h>
-static inline int dma_supported(struct device *dev, u64 mask)
-{
- return get_dma_ops(dev)->dma_supported(dev, mask);
-}
-
static inline int dma_set_mask(struct device *dev, u64 mask)
{
return get_dma_ops(dev)->set_dma_mask(dev, mask);
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index b4f1b6b..199b080 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -38,12 +38,14 @@ static inline void set_dma_ops(struct device *dev, struct dma_map_ops *ops)
dev->archdata.dma_ops = ops;
}
+#define HAVE_ARCH_DMA_SUPPORTED 1
+extern int dma_supported(struct device *dev, u64 mask);
+
/*
* Note that while the generic code provides dummy dma_{alloc,free}_noncoherent
* implementations, we don't provide a dma_cache_sync function so drivers using
* this API are highlighted with build warnings.
*/
-
#include <asm-generic/dma-mapping-common.h>
static inline int dma_set_mask(struct device *dev, u64 mask)
@@ -172,8 +174,6 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
static inline void dma_mark_clean(void *addr, size_t size) { }
-extern int dma_supported(struct device *dev, u64 mask);
-
extern int arm_dma_set_mask(struct device *dev, u64 dma_mask);
/**
diff --git a/arch/arm64/include/asm/dma-mapping.h b/arch/arm64/include/asm/dma-mapping.h
index f45f444..f519a58 100644
--- a/arch/arm64/include/asm/dma-mapping.h
+++ b/arch/arm64/include/asm/dma-mapping.h
@@ -84,12 +84,6 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr)
return (phys_addr_t)dev_addr;
}
-static inline int dma_supported(struct device *dev, u64 mask)
-{
- struct dma_map_ops *ops = get_dma_ops(dev);
- return ops->dma_supported(dev, mask);
-}
-
static inline int dma_set_mask(struct device *dev, u64 mask)
{
if (!dev->dma_mask || !dma_supported(dev, mask))
diff --git a/arch/h8300/include/asm/dma-mapping.h b/arch/h8300/include/asm/dma-mapping.h
index 5eef053..48d652e 100644
--- a/arch/h8300/include/asm/dma-mapping.h
+++ b/arch/h8300/include/asm/dma-mapping.h
@@ -10,11 +10,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
#include <asm-generic/dma-mapping-common.h>
-static inline int dma_supported(struct device *dev, u64 mask)
-{
- return 0;
-}
-
static inline int dma_set_mask(struct device *dev, u64 mask)
{
return 0;
diff --git a/arch/hexagon/include/asm/dma-mapping.h b/arch/hexagon/include/asm/dma-mapping.h
index e661192..36e8de7 100644
--- a/arch/hexagon/include/asm/dma-mapping.h
+++ b/arch/hexagon/include/asm/dma-mapping.h
@@ -43,6 +43,7 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return dma_ops;
}
+#define HAVE_ARCH_DMA_SUPPORTED 1
extern int dma_supported(struct device *dev, u64 mask);
extern int dma_set_mask(struct device *dev, u64 mask);
extern int dma_is_consistent(struct device *dev, dma_addr_t dma_handle);
diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h
index 27b713d..7982caa 100644
--- a/arch/ia64/include/asm/dma-mapping.h
+++ b/arch/ia64/include/asm/dma-mapping.h
@@ -27,12 +27,6 @@ extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int,
#include <asm-generic/dma-mapping-common.h>
-static inline int dma_supported(struct device *dev, u64 mask)
-{
- struct dma_map_ops *ops = platform_dma_get_ops(dev);
- return ops->dma_supported(dev, mask);
-}
-
static inline int
dma_set_mask (struct device *dev, u64 mask)
{
diff --git a/arch/microblaze/include/asm/dma-mapping.h b/arch/microblaze/include/asm/dma-mapping.h
index e5b8438..3b453c5 100644
--- a/arch/microblaze/include/asm/dma-mapping.h
+++ b/arch/microblaze/include/asm/dma-mapping.h
@@ -44,16 +44,7 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return &dma_direct_ops;
}
-static inline int dma_supported(struct device *dev, u64 mask)
-{
- struct dma_map_ops *ops = get_dma_ops(dev);
-
- if (unlikely(!ops))
- return 0;
- if (!ops->dma_supported)
- return 1;
- return ops->dma_supported(dev, mask);
-}
+#include <asm-generic/dma-mapping-common.h>
static inline int dma_set_mask(struct device *dev, u64 dma_mask)
{
@@ -69,8 +60,6 @@ static inline int dma_set_mask(struct device *dev, u64 dma_mask)
return 0;
}
-#include <asm-generic/dma-mapping-common.h>
-
static inline void __dma_sync(unsigned long paddr,
size_t size, enum dma_data_direction direction)
{
diff --git a/arch/mips/include/asm/dma-mapping.h b/arch/mips/include/asm/dma-mapping.h
index 158bb36..8bf8ec3 100644
--- a/arch/mips/include/asm/dma-mapping.h
+++ b/arch/mips/include/asm/dma-mapping.h
@@ -31,12 +31,6 @@ static inline void dma_mark_clean(void *addr, size_t size) {}
#include <asm-generic/dma-mapping-common.h>
-static inline int dma_supported(struct device *dev, u64 mask)
-{
- struct dma_map_ops *ops = get_dma_ops(dev);
- return ops->dma_supported(dev, mask);
-}
-
static inline int
dma_set_mask(struct device *dev, u64 mask)
{
diff --git a/arch/openrisc/include/asm/dma-mapping.h b/arch/openrisc/include/asm/dma-mapping.h
index 7dfe9d5..8fc08b8 100644
--- a/arch/openrisc/include/asm/dma-mapping.h
+++ b/arch/openrisc/include/asm/dma-mapping.h
@@ -35,14 +35,15 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return &or1k_dma_map_ops;
}
-#include <asm-generic/dma-mapping-common.h>
-
+#define HAVE_ARCH_DMA_SUPPORTED 1
static inline int dma_supported(struct device *dev, u64 dma_mask)
{
/* Support 32 bit DMA mask exclusively */
return dma_mask == DMA_BIT_MASK(32);
}
+#include <asm-generic/dma-mapping-common.h>
+
static inline int dma_set_mask(struct device *dev, u64 dma_mask)
{
if (!dev->dma_mask || !dma_supported(dev, dma_mask))
diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h
index 72d05ab..e2ff85c 100644
--- a/arch/powerpc/include/asm/dma-mapping.h
+++ b/arch/powerpc/include/asm/dma-mapping.h
@@ -124,17 +124,6 @@ static inline void set_dma_offset(struct device *dev, dma_addr_t off)
#include <asm-generic/dma-mapping-common.h>
-static inline int dma_supported(struct device *dev, u64 mask)
-{
- struct dma_map_ops *dma_ops = get_dma_ops(dev);
-
- if (unlikely(dma_ops == NULL))
- return 0;
- if (dma_ops->dma_supported == NULL)
- return 1;
- return dma_ops->dma_supported(dev, mask);
-}
-
extern int dma_set_mask(struct device *dev, u64 dma_mask);
extern int __dma_set_mask(struct device *dev, u64 dma_mask);
extern u64 __dma_get_required_mask(struct device *dev);
diff --git a/arch/s390/include/asm/dma-mapping.h b/arch/s390/include/asm/dma-mapping.h
index 3c29329..1f42489 100644
--- a/arch/s390/include/asm/dma-mapping.h
+++ b/arch/s390/include/asm/dma-mapping.h
@@ -27,15 +27,6 @@ static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
#include <asm-generic/dma-mapping-common.h>
-static inline int dma_supported(struct device *dev, u64 mask)
-{
- struct dma_map_ops *dma_ops = get_dma_ops(dev);
-
- if (dma_ops->dma_supported == NULL)
- return 1;
- return dma_ops->dma_supported(dev, mask);
-}
-
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
if (!dev->dma_mask)
diff --git a/arch/sh/include/asm/dma-mapping.h b/arch/sh/include/asm/dma-mapping.h
index 98308c4..088f6e5 100644
--- a/arch/sh/include/asm/dma-mapping.h
+++ b/arch/sh/include/asm/dma-mapping.h
@@ -13,16 +13,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
#include <asm-generic/dma-mapping-common.h>
-static inline int dma_supported(struct device *dev, u64 mask)
-{
- struct dma_map_ops *ops = get_dma_ops(dev);
-
- if (ops->dma_supported)
- return ops->dma_supported(dev, mask);
-
- return 1;
-}
-
static inline int dma_set_mask(struct device *dev, u64 mask)
{
struct dma_map_ops *ops = get_dma_ops(dev);
diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h
index 5069d13..184651b 100644
--- a/arch/sparc/include/asm/dma-mapping.h
+++ b/arch/sparc/include/asm/dma-mapping.h
@@ -7,6 +7,7 @@
#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
+#define HAVE_ARCH_DMA_SUPPORTED 1
int dma_supported(struct device *dev, u64 mask);
static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
diff --git a/arch/tile/include/asm/dma-mapping.h b/arch/tile/include/asm/dma-mapping.h
index f8f7a05..559ed4a 100644
--- a/arch/tile/include/asm/dma-mapping.h
+++ b/arch/tile/include/asm/dma-mapping.h
@@ -75,12 +75,6 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
}
static inline int
-dma_supported(struct device *dev, u64 mask)
-{
- return get_dma_ops(dev)->dma_supported(dev, mask);
-}
-
-static inline int
dma_set_mask(struct device *dev, u64 mask)
{
struct dma_map_ops *dma_ops = get_dma_ops(dev);
diff --git a/arch/unicore32/include/asm/dma-mapping.h b/arch/unicore32/include/asm/dma-mapping.h
index 175d7e3..21231c1 100644
--- a/arch/unicore32/include/asm/dma-mapping.h
+++ b/arch/unicore32/include/asm/dma-mapping.h
@@ -28,16 +28,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
return &swiotlb_dma_map_ops;
}
-static inline int dma_supported(struct device *dev, u64 mask)
-{
- struct dma_map_ops *dma_ops = get_dma_ops(dev);
-
- if (unlikely(dma_ops == NULL))
- return 0;
-
- return dma_ops->dma_supported(dev, mask);
-}
-
#include <asm-generic/dma-mapping-common.h>
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h
index bbca62e..b1fbf58 100644
--- a/arch/x86/include/asm/dma-mapping.h
+++ b/arch/x86/include/asm/dma-mapping.h
@@ -43,9 +43,11 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
bool arch_dma_alloc_attrs(struct device **dev, gfp_t *gfp);
#define arch_dma_alloc_attrs arch_dma_alloc_attrs
+#define HAVE_ARCH_DMA_SUPPORTED 1
+extern int dma_supported(struct device *hwdev, u64 mask);
+
#include <asm-generic/dma-mapping-common.h>
-extern int dma_supported(struct device *hwdev, u64 mask);
extern int dma_set_mask(struct device *dev, u64 mask);
extern void *dma_generic_alloc_coherent(struct device *dev, size_t size,
diff --git a/include/asm-generic/dma-mapping-common.h b/include/asm-generic/dma-mapping-common.h
index cdaa241..67fa6bc 100644
--- a/include/asm-generic/dma-mapping-common.h
+++ b/include/asm-generic/dma-mapping-common.h
@@ -327,4 +327,17 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
#endif
}
+#ifndef HAVE_ARCH_DMA_SUPPORTED
+static inline int dma_supported(struct device *dev, u64 mask)
+{
+ struct dma_map_ops *ops = get_dma_ops(dev);
+
+ if (!ops)
+ return 0;
+ if (!ops->dma_supported)
+ return 1;
+ return ops->dma_supported(dev, mask);
+}
+#endif
+
#endif
--
1.9.1
--
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