linux-next: manual merge of the xen-tip tree with the arm-soc tree

linux-next: manual merge of the xen-tip tree with the arm-soc tree

[Stephen Rothwell]

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Hi all,

Today's linux-next merge of the xen-tip tree got a conflict in
arch/arm/include/asm/dma-mapping.h between commits a3a60f81ee6f
("dma-mapping: replace set_arch_dma_coherent_ops with
arch_setup_dma_ops") and 4bb25789ed28 ("arm: dma-mapping: plumb our
iommu mapping ops into arch_setup_dma_ops") from the arm-soc tree and
commit 3d5391ac6f5e ("arm: introduce is_device_dma_coherent") from the
xen-tip tree.

I fixed it up (see below) and can carry the fix as necessary (no action
is required).

I also neede this merge fix patch:

From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Mon, 8 Dec 2014 18:46:59 +1100
Subject: [PATCH] arm: introduce is_device_dma_coherent merge fix

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
 arch/arm/mm/dma-mapping.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 09645f00bd17..43064cbe58f9 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -2058,6 +2058,7 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
 	else
 		dma_ops = arm_get_dma_map_ops(coherent);
 
+	dev->archdata.dma_coherent = coherent;
 	set_dma_ops(dev, dma_ops);
 }
 
-- 
2.1.3

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au

diff --cc arch/arm/include/asm/dma-mapping.h
index 9410b7e548fc,e6e3446abdf6..000000000000
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@@ -121,13 -121,20 +121,19 @@@ static inline unsigned long dma_max_pfn
  }
  #define dma_max_pfn(dev) dma_max_pfn(dev)
  
 -static inline int set_arch_dma_coherent_ops(struct device *dev)
 -{
 -	dev->archdata.dma_coherent = true;
 -	set_dma_ops(dev, &arm_coherent_dma_ops);
 -	return 0;
 -}
 -#define set_arch_dma_coherent_ops(dev)	set_arch_dma_coherent_ops(dev)
 +#define arch_setup_dma_ops arch_setup_dma_ops
 +extern void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
 +			       struct iommu_ops *iommu, bool coherent);
 +
 +#define arch_teardown_dma_ops arch_teardown_dma_ops
 +extern void arch_teardown_dma_ops(struct device *dev);
  
+ /* do not use this function in a driver */
+ static inline bool is_device_dma_coherent(struct device *dev)
+ {
+ 	return dev->archdata.dma_coherent;
+ }
+ 
  static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
  {
  	unsigned int offset = paddr & ~PAGE_MASK;

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Re: linux-next: manual merge of the xen-tip tree with the arm-soc tree

[Will Deacon]

On Mon, Dec 08, 2014 at 07:49:08AM +0000, Stephen Rothwell wrote:
> Hi all,
> 
> Today's linux-next merge of the xen-tip tree got a conflict in
> arch/arm/include/asm/dma-mapping.h between commits a3a60f81ee6f
> ("dma-mapping: replace set_arch_dma_coherent_ops with
> arch_setup_dma_ops") and 4bb25789ed28 ("arm: dma-mapping: plumb our
> iommu mapping ops into arch_setup_dma_ops") from the arm-soc tree and
> commit 3d5391ac6f5e ("arm: introduce is_device_dma_coherent") from the
> xen-tip tree.
> 
> I fixed it up (see below) and can carry the fix as necessary (no action
> is required).
> 
> I also neede this merge fix patch:
> 
> From: Stephen Rothwell <sfr@canb.auug.org.au>
> Date: Mon, 8 Dec 2014 18:46:59 +1100
> Subject: [PATCH] arm: introduce is_device_dma_coherent merge fix
> 
> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
> ---
>  arch/arm/mm/dma-mapping.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
> index 09645f00bd17..43064cbe58f9 100644
> --- a/arch/arm/mm/dma-mapping.c
> +++ b/arch/arm/mm/dma-mapping.c
> @@ -2058,6 +2058,7 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
>  	else
>  		dma_ops = arm_get_dma_map_ops(coherent);
>  
> +	dev->archdata.dma_coherent = coherent;
>  	set_dma_ops(dev, dma_ops);
>  }

Looks good to me.

Cheers,

Will

> -- 
> 2.1.3
> 
> -- 
> Cheers,
> Stephen Rothwell                    sfr@canb.auug.org.au
> 
> diff --cc arch/arm/include/asm/dma-mapping.h
> index 9410b7e548fc,e6e3446abdf6..000000000000
> --- a/arch/arm/include/asm/dma-mapping.h
> +++ b/arch/arm/include/asm/dma-mapping.h
> @@@ -121,13 -121,20 +121,19 @@@ static inline unsigned long dma_max_pfn
>   }
>   #define dma_max_pfn(dev) dma_max_pfn(dev)
>   
>  -static inline int set_arch_dma_coherent_ops(struct device *dev)
>  -{
>  -	dev->archdata.dma_coherent = true;
>  -	set_dma_ops(dev, &arm_coherent_dma_ops);
>  -	return 0;
>  -}
>  -#define set_arch_dma_coherent_ops(dev)	set_arch_dma_coherent_ops(dev)
>  +#define arch_setup_dma_ops arch_setup_dma_ops
>  +extern void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
>  +			       struct iommu_ops *iommu, bool coherent);
>  +
>  +#define arch_teardown_dma_ops arch_teardown_dma_ops
>  +extern void arch_teardown_dma_ops(struct device *dev);
>   
> + /* do not use this function in a driver */
> + static inline bool is_device_dma_coherent(struct device *dev)
> + {
> + 	return dev->archdata.dma_coherent;
> + }
> + 
>   static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
>   {
>   	unsigned int offset = paddr & ~PAGE_MASK;

linux-next: missing merge fix patch for the merge of the xen-tip tree with the arm-soc tree

[Stephen Rothwell]

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Hi Linus,

I have been carrying this merge fix patch for some time that is now
needed in your tree:

From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Mon, 8 Dec 2014 18:46:59 +1100
Subject: [PATCH] arm: introduce is_device_dma_coherent merge fix

The merge of the (linux-next) xen-tip tree got a conflict in
arch/arm/include/asm/dma-mapping.h between commits a3a60f81ee6f
("dma-mapping: replace set_arch_dma_coherent_ops with
arch_setup_dma_ops") and 4bb25789ed28 ("arm: dma-mapping: plumb our
iommu mapping ops into arch_setup_dma_ops") from the arm-soc tree and
commit 3d5391ac6f5e ("arm: introduce is_device_dma_coherent") from the
xen-tip tree.  It was fixed up, but also required this additional fix.

"Looks good to me"-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
 arch/arm/mm/dma-mapping.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 09645f00bd17..43064cbe58f9 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -2058,6 +2058,7 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
 	else
 		dma_ops = arm_get_dma_map_ops(coherent);
 
+	dev->archdata.dma_coherent = coherent;
 	set_dma_ops(dev, dma_ops);
 }
 
-- 
2.1.3

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au

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Re: linux-next: missing merge fix patch for the merge of the xen-tip tree with the arm-soc tree

[Linus Torvalds]

On Mon, Dec 22, 2014 at 6:26 PM, Stephen Rothwell <sfr@canb.auug.org.au> wrote:
> Hi Linus,
>
> I have been carrying this merge fix patch for some time that is now
> needed in your tree:

No, it's not. Look more closely.

My merge put the

        dev->archdata.dma_coherent = coherent;

line at the top of the function, like the way it was in the original commit.

                            Linus

Re: linux-next: missing merge fix patch for the merge of the xen-tip tree with the arm-soc tree

[Stephen Rothwell]

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Hi Linus,

On Mon, 22 Dec 2014 20:09:50 -0800 Linus Torvalds <torvalds@linux-foundation.org> wrote:
>
> On Mon, Dec 22, 2014 at 6:26 PM, Stephen Rothwell <sfr@canb.auug.org.au> wrote:
> > Hi Linus,
> >
> > I have been carrying this merge fix patch for some time that is now
> > needed in your tree:
> 
> No, it's not. Look more closely.
> 
> My merge put the
> 
>         dev->archdata.dma_coherent = coherent;
> 
> line at the top of the function, like the way it was in the original commit.

Oops, sorry about that.

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au

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