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    Subject[PATCH 03 of 14] swiotlb: move some definitions to header
    Date
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    From: Ian Campbell <ian.campbell@citrix.com>

    Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
    Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
    ---
    include/linux/swiotlb.h | 14 ++++++++++++++
    lib/swiotlb.c | 14 +-------------
    2 files changed, 15 insertions(+), 13 deletions(-)

    diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
    --- a/include/linux/swiotlb.h
    +++ b/include/linux/swiotlb.h
    @@ -7,6 +7,20 @@
    struct dma_attrs;
    struct scatterlist;

    +/*
    + * Maximum allowable number of contiguous slabs to map,
    + * must be a power of 2. What is the appropriate value ?
    + * The complexity of {map,unmap}_single is linearly dependent on this value.
    + */
    +#define IO_TLB_SEGSIZE 128
    +
    +
    +/*
    + * log of the size of each IO TLB slab. The number of slabs is command line
    + * controllable.
    + */
    +#define IO_TLB_SHIFT 11
    +
    extern void
    swiotlb_init(void);

    diff --git a/lib/swiotlb.c b/lib/swiotlb.c
    --- a/lib/swiotlb.c
    +++ b/lib/swiotlb.c
    @@ -23,6 +23,7 @@
    #include <linux/spinlock.h>
    #include <linux/swiotlb.h>
    #include <linux/string.h>
    +#include <linux/swiotlb.h>
    #include <linux/types.h>
    #include <linux/ctype.h>

    @@ -40,19 +41,6 @@
    #define SG_ENT_VIRT_ADDRESS(sg) (sg_virt((sg)))
    #define SG_ENT_PHYS_ADDRESS(sg) virt_to_bus(SG_ENT_VIRT_ADDRESS(sg))

    -/*
    - * Maximum allowable number of contiguous slabs to map,
    - * must be a power of 2. What is the appropriate value ?
    - * The complexity of {map,unmap}_single is linearly dependent on this value.
    - */
    -#define IO_TLB_SEGSIZE 128
    -
    -/*
    - * log of the size of each IO TLB slab. The number of slabs is command line
    - * controllable.
    - */
    -#define IO_TLB_SHIFT 11
    -
    #define SLABS_PER_PAGE (1 << (PAGE_SHIFT - IO_TLB_SHIFT))

    /*



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