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SubjectRe: [PATCH 1/2] swiotlb: create appropriate common header for swiotlb
I did a similar patchset 2 months ago. It should be in the -mm tree.

See http://lkml.org/lkml/2008/8/7/130

Joerg

On Wed, Oct 15, 2008 at 04:08:23AM +0200, Jeremy Fitzhardinge wrote:
> swiotlb.c was moved into lib/ as a generic service, but its prototypes
> are still in asm-x86. Move the common parts to linux/swiotlb.h, and
> update the users accordingly.
>
> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
> Cc: Joerg Roedel <joerg.roedel@amd.com>
> Cc: Jan Beulich <jbeulich@novell.com>
> Cc: Tony Luck <tony.luck@intel.com>
> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
> ---
> arch/x86/kernel/aperture_64.c | 1
> arch/x86/kernel/pci-calgary_64.c | 1
> arch/x86/kernel/pci-dma.c | 1
> arch/x86/kernel/pci-gart_64.c | 2 -
> arch/x86/kernel/pci-swiotlb_64.c | 2 -
> drivers/pci/dmar.c | 1
> drivers/pci/intel-iommu.c | 1
> drivers/pci/xen-iommu.c | 2 -
> include/asm-x86/dma-mapping.h | 1
> include/asm-x86/swiotlb.h | 42 -------------------------------
> include/linux/swiotlb.h | 50 ++++++++++++++++++++++++++++++++++++++
> lib/swiotlb.c | 3 --
> 12 files changed, 59 insertions(+), 48 deletions(-)
>
> ===================================================================
> --- a/arch/x86/kernel/aperture_64.c
> +++ b/arch/x86/kernel/aperture_64.c
> @@ -16,6 +16,7 @@
> #include <linux/mmzone.h>
> #include <linux/pci_ids.h>
> #include <linux/pci.h>
> +#include <linux/swiotlb.h>
> #include <linux/bitops.h>
> #include <linux/ioport.h>
> #include <linux/suspend.h>
> ===================================================================
> --- a/arch/x86/kernel/pci-calgary_64.c
> +++ b/arch/x86/kernel/pci-calgary_64.c
> @@ -36,6 +36,7 @@
> #include <linux/pci.h>
> #include <linux/delay.h>
> #include <linux/scatterlist.h>
> +#include <linux/swiotlb.h>
> #include <linux/iommu-helper.h>
>
> #include <asm/iommu.h>
> ===================================================================
> --- a/arch/x86/kernel/pci-dma.c
> +++ b/arch/x86/kernel/pci-dma.c
> @@ -1,6 +1,7 @@
> #include <linux/dma-mapping.h>
> #include <linux/dmar.h>
> #include <linux/bootmem.h>
> +#include <linux/swiotlb.h>
> #include <linux/pci.h>
>
> #include <asm/proto.h>
> ===================================================================
> --- a/arch/x86/kernel/pci-gart_64.c
> +++ b/arch/x86/kernel/pci-gart_64.c
> @@ -21,6 +21,7 @@
> #include <linux/pci.h>
> #include <linux/module.h>
> #include <linux/topology.h>
> +#include <linux/swiotlb.h>
> #include <linux/interrupt.h>
> #include <linux/bitops.h>
> #include <linux/kdebug.h>
> @@ -35,7 +36,6 @@
> #include <asm/iommu.h>
> #include <asm/gart.h>
> #include <asm/cacheflush.h>
> -#include <asm/swiotlb.h>
> #include <asm/dma.h>
> #include <asm/k8.h>
>
> ===================================================================
> --- a/arch/x86/kernel/pci-swiotlb_64.c
> +++ b/arch/x86/kernel/pci-swiotlb_64.c
> @@ -3,10 +3,10 @@
> #include <linux/pci.h>
> #include <linux/cache.h>
> #include <linux/module.h>
> +#include <linux/swiotlb.h>
> #include <linux/dma-mapping.h>
>
> #include <asm/iommu.h>
> -#include <asm/swiotlb.h>
> #include <asm/dma.h>
>
> int swiotlb __read_mostly;
> ===================================================================
> --- a/drivers/pci/dmar.c
> +++ b/drivers/pci/dmar.c
> @@ -29,6 +29,7 @@
> #include <linux/pci.h>
> #include <linux/dmar.h>
> #include <linux/timer.h>
> +#include <linux/swiotlb.h>
> #include "iova.h"
> #include "intel-iommu.h"
>
> ===================================================================
> --- a/drivers/pci/intel-iommu.c
> +++ b/drivers/pci/intel-iommu.c
> @@ -29,6 +29,7 @@
> #include <linux/sysdev.h>
> #include <linux/spinlock.h>
> #include <linux/pci.h>
> +#include <linux/swiotlb.h>
> #include <linux/dmar.h>
> #include <linux/dma-mapping.h>
> #include <linux/mempool.h>
> ===================================================================
> --- a/drivers/pci/xen-iommu.c
> +++ b/drivers/pci/xen-iommu.c
> @@ -5,6 +5,7 @@
> #include <linux/module.h>
> #include <linux/version.h>
> #include <linux/scatterlist.h>
> +#include <linux/swiotlb.h>
> #include <linux/io.h>
> #include <linux/bug.h>
>
> @@ -13,7 +14,6 @@
> #include <xen/xen-ops.h>
>
> #include <asm/iommu.h>
> -#include <asm/swiotlb.h>
> #include <asm/tlbflush.h>
>
> #define IOMMU_BUG_ON(test) \
> ===================================================================
> --- a/include/asm-x86/dma-mapping.h
> +++ b/include/asm-x86/dma-mapping.h
> @@ -8,7 +8,6 @@
>
> #include <linux/scatterlist.h>
> #include <asm/io.h>
> -#include <asm/swiotlb.h>
> #include <asm-generic/dma-coherent.h>
>
> extern dma_addr_t bad_dma_address;
> ===================================================================
> --- a/include/asm-x86/swiotlb.h
> +++ b/include/asm-x86/swiotlb.h
> @@ -1,47 +1,5 @@
> #ifndef ASM_X86__SWIOTLB_H
> #define ASM_X86__SWIOTLB_H
> -
> -#include <asm/dma-mapping.h>
> -
> -/* SWIOTLB interface */
> -
> -extern dma_addr_t swiotlb_map_single(struct device *hwdev, void *ptr,
> - size_t size, int dir);
> -extern void *swiotlb_alloc_coherent(struct device *hwdev, size_t size,
> - dma_addr_t *dma_handle, gfp_t flags);
> -extern void swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr,
> - size_t size, int dir);
> -extern void swiotlb_sync_single_for_cpu(struct device *hwdev,
> - dma_addr_t dev_addr,
> - size_t size, int dir);
> -extern void swiotlb_sync_single_for_device(struct device *hwdev,
> - dma_addr_t dev_addr,
> - size_t size, int dir);
> -extern void swiotlb_sync_single_range_for_cpu(struct device *hwdev,
> - dma_addr_t dev_addr,
> - unsigned long offset,
> - size_t size, int dir);
> -extern void swiotlb_sync_single_range_for_device(struct device *hwdev,
> - dma_addr_t dev_addr,
> - unsigned long offset,
> - size_t size, int dir);
> -extern void swiotlb_sync_sg_for_cpu(struct device *hwdev,
> - struct scatterlist *sg, int nelems,
> - int dir);
> -extern void swiotlb_sync_sg_for_device(struct device *hwdev,
> - struct scatterlist *sg, int nelems,
> - int dir);
> -extern int swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg,
> - int nents, int direction);
> -extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg,
> - int nents, int direction);
> -extern int swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
> -extern void swiotlb_free_coherent(struct device *hwdev, size_t size,
> - void *vaddr, dma_addr_t dma_handle);
> -extern int swiotlb_dma_supported(struct device *hwdev, u64 mask);
> -extern void swiotlb_init(void);
> -
> -extern int swiotlb_force;
>
> #ifdef CONFIG_SWIOTLB
> extern int swiotlb;
> ===================================================================
> --- /dev/null
> +++ b/include/linux/swiotlb.h
> @@ -0,0 +1,50 @@
> +#ifndef LINUX__SWIOTLB_H
> +#define LINUX__SWIOTLB_H
> +
> +#include <asm/swiotlb.h>
> +
> +/* SWIOTLB interface */
> +
> +extern dma_addr_t swiotlb_map_single(struct device *hwdev, void *ptr,
> + size_t size, int dir);
> +extern void *swiotlb_alloc_coherent(struct device *hwdev, size_t size,
> + dma_addr_t *dma_handle, gfp_t flags);
> +extern void swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr,
> + size_t size, int dir);
> +extern void swiotlb_sync_single_for_cpu(struct device *hwdev,
> + dma_addr_t dev_addr,
> + size_t size, int dir);
> +extern void swiotlb_sync_single_for_device(struct device *hwdev,
> + dma_addr_t dev_addr,
> + size_t size, int dir);
> +extern void swiotlb_sync_single_range_for_cpu(struct device *hwdev,
> + dma_addr_t dev_addr,
> + unsigned long offset,
> + size_t size, int dir);
> +extern void swiotlb_sync_single_range_for_device(struct device *hwdev,
> + dma_addr_t dev_addr,
> + unsigned long offset,
> + size_t size, int dir);
> +extern void swiotlb_sync_sg_for_cpu(struct device *hwdev,
> + struct scatterlist *sg, int nelems,
> + int dir);
> +extern void swiotlb_sync_sg_for_device(struct device *hwdev,
> + struct scatterlist *sg, int nelems,
> + int dir);
> +extern int swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg,
> + int nents, int direction);
> +extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg,
> + int nents, int direction);
> +extern void swiotlb_unmap_sg_attrs(struct device *hwdev,
> + struct scatterlist *sgl,
> + int nelems, int dir,
> + struct dma_attrs *attrs);
> +extern int swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
> +extern void swiotlb_free_coherent(struct device *hwdev, size_t size,
> + void *vaddr, dma_addr_t dma_handle);
> +extern int swiotlb_dma_supported(struct device *hwdev, u64 mask);
> +extern void swiotlb_init(void);
> +
> +extern int swiotlb_force;
> +
> +#endif /* LINUX__SWIOTLB_H */
> ===================================================================
> --- a/lib/swiotlb.c
> +++ b/lib/swiotlb.c
> @@ -22,6 +22,7 @@
> #include <linux/module.h>
> #include <linux/spinlock.h>
> #include <linux/string.h>
> +#include <linux/swiotlb.h>
> #include <linux/types.h>
> #include <linux/ctype.h>
>
> @@ -685,8 +686,6 @@
> SYNC_FOR_DEVICE);
> }
>
> -void swiotlb_unmap_sg_attrs(struct device *, struct scatterlist *, int, int,
> - struct dma_attrs *);
> /*
> * Map a set of buffers described by scatterlist in streaming mode for DMA.
> * This is the scatter-gather version of the above swiotlb_map_single
>
>
>

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