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dma-mapping: add a kconfig symbol for arch_setup_dma_ops availability

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Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Paul Burton <paul.burton@mips.com> # MIPS
Acked-by: Catalin Marinas <catalin.marinas@arm.com> # arm64
This commit is contained in:
Christoph Hellwig 2019-01-07 13:36:20 -05:00
parent 70ca7ba2db
commit 347cb6af87
12 changed files with 24 additions and 35 deletions
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1
arch/arc/Kconfig
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@ -11,6 +11,7 @@ config ARC
select ARC_TIMERS
select ARCH_HAS_DMA_COHERENT_TO_PFN
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SETUP_DMA_OPS
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC

1
arch/arc/include/asm/Kbuild
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@ -3,6 +3,7 @@ generic-y += bugs.h
generic-y += compat.h
generic-y += device.h
generic-y += div64.h
generic-y += dma-mapping.h
generic-y += emergency-restart.h
generic-y += extable.h
generic-y += ftrace.h

13
arch/arc/include/asm/dma-mapping.h
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@ -1,13 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
// (C) 2018 Synopsys, Inc. (www.synopsys.com)
#ifndef ASM_ARC_DMA_MAPPING_H
#define ASM_ARC_DMA_MAPPING_H
#include <asm-generic/dma-mapping.h>
void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
const struct iommu_ops *iommu, bool coherent);
#define arch_setup_dma_ops arch_setup_dma_ops
#endif

1
arch/arm/Kconfig
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@ -12,6 +12,7 @@ config ARM
select ARCH_HAS_MEMBARRIER_SYNC_CORE
select ARCH_HAS_PTE_SPECIAL if ARM_LPAE
select ARCH_HAS_PHYS_TO_DMA
select ARCH_HAS_SETUP_DMA_OPS
select ARCH_HAS_SET_MEMORY
select ARCH_HAS_STRICT_KERNEL_RWX if MMU && !XIP_KERNEL
select ARCH_HAS_STRICT_MODULE_RWX if MMU

4
arch/arm/include/asm/dma-mapping.h
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@ -96,10 +96,6 @@ static inline unsigned long dma_max_pfn(struct device *dev)
}
#define dma_max_pfn(dev) dma_max_pfn(dev)
#define arch_setup_dma_ops arch_setup_dma_ops
extern void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
const struct iommu_ops *iommu, bool coherent);
#ifdef CONFIG_MMU
#define arch_teardown_dma_ops arch_teardown_dma_ops
extern void arch_teardown_dma_ops(struct device *dev);

1
arch/arm64/Kconfig
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@ -22,6 +22,7 @@ config ARM64
select ARCH_HAS_KCOV
select ARCH_HAS_MEMBARRIER_SYNC_CORE
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SETUP_DMA_OPS
select ARCH_HAS_SET_MEMORY
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_STRICT_MODULE_RWX

4
arch/arm64/include/asm/dma-mapping.h
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@ -29,10 +29,6 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
return NULL;
}
void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
const struct iommu_ops *iommu, bool coherent);
#define arch_setup_dma_ops arch_setup_dma_ops
#ifdef CONFIG_IOMMU_DMA
void arch_teardown_dma_ops(struct device *dev);
#define arch_teardown_dma_ops arch_teardown_dma_ops

1
arch/mips/Kconfig
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@ -1118,6 +1118,7 @@ config DMA_MAYBE_COHERENT
config DMA_PERDEV_COHERENT
bool
select ARCH_HAS_SETUP_DMA_OPS
select DMA_NONCOHERENT
config DMA_NONCOHERENT

10
arch/mips/include/asm/dma-mapping.h
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@ -15,14 +15,4 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
#endif
}
#define arch_setup_dma_ops arch_setup_dma_ops
static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base,
u64 size, const struct iommu_ops *iommu,
bool coherent)
{
#ifdef CONFIG_DMA_PERDEV_COHERENT
dev->dma_coherent = coherent;
#endif
}
#endif /* _ASM_DMA_MAPPING_H */

8
arch/mips/mm/dma-noncoherent.c
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@ -159,3 +159,11 @@ void arch_dma_cache_sync(struct device *dev, void *vaddr, size_t size,
dma_sync_virt(vaddr, size, direction);
}
#ifdef CONFIG_DMA_PERDEV_COHERENT
void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
const struct iommu_ops *iommu, bool coherent)
{
dev->dma_coherent = coherent;
}
#endif

12
include/linux/dma-mapping.h
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@ -671,11 +671,15 @@ static inline int dma_coerce_mask_and_coherent(struct device *dev, u64 mask)
return dma_set_mask_and_coherent(dev, mask);
}
#ifndef arch_setup_dma_ops
#ifdef CONFIG_ARCH_HAS_SETUP_DMA_OPS
void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
const struct iommu_ops *iommu, bool coherent);
#else
static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base,
u64 size, const struct iommu_ops *iommu,
bool coherent) { }
#endif
u64 size, const struct iommu_ops *iommu, bool coherent)
{
}
#endif /* CONFIG_ARCH_HAS_SETUP_DMA_OPS */
#ifndef arch_teardown_dma_ops
static inline void arch_teardown_dma_ops(struct device *dev) { }

3
kernel/dma/Kconfig
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@ -19,6 +19,9 @@ config ARCH_HAS_DMA_COHERENCE_H
config HAVE_GENERIC_DMA_COHERENT
bool
config ARCH_HAS_SETUP_DMA_OPS
bool
config ARCH_HAS_SYNC_DMA_FOR_DEVICE
bool