lkml.org 
[lkml]   [2010]   [Apr]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    SubjectRe: [PATCH 4/5] swiotlb: Make swiotlb bookkeeping functions visible in the header file.
    From
    On Fri, 19 Mar 2010 11:04:21 -0400
    Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> wrote:

    > We put the init, free, and functions dealing with the operations on the
    > SWIOTLB buffer at the top of the header. Also we export some of the variables
    > that are used by the dma_ops functions.
    >
    > Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
    > ---
    > include/linux/swiotlb.h | 33 +++++++++++++++++++++++++++++++++
    > lib/swiotlb.c | 28 ++++++++++------------------
    > 2 files changed, 43 insertions(+), 18 deletions(-)
    >
    > diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
    > index febedcf..8550d6b 100644
    > --- a/include/linux/swiotlb.h
    > +++ b/include/linux/swiotlb.h
    > @@ -24,6 +24,39 @@ extern int swiotlb_force;
    >
    > extern void swiotlb_init(int verbose);
    >
    > +/* Internal book-keeping functions. Must be linked against the library
    > + * to take advantage of them.*/
    > +#ifdef CONFIG_SWIOTLB
    > +/*
    > + * Enumeration for sync targets
    > + */
    > +enum dma_sync_target {
    > + SYNC_FOR_CPU = 0,
    > + SYNC_FOR_DEVICE = 1,
    > +};
    > +extern char *swiotlb_bk_start;
    > +extern char *swiotlb_bk_end;
    > +extern unsigned long swiotlb_bk_nslabs;

    exporting swiotlb_bk_start and swiotlb_bk_nslabs aren't enough?


    > +extern void *swiotlb_bk_overflow_buffer;
    > +extern unsigned long swiotlb_bk_overflow;
    > +extern int is_swiotlb_buffer(phys_addr_t paddr);
    > +extern void *swiotlb_bk_map_single(struct device *hwdev, phys_addr_t phys,
    > + unsigned long start_dma_addr, size_t size, int dir);

    enum dma_data_direction is better for 'dir'.


    \
     
     \ /
      Last update: 2010-04-05 04:21    [W:0.032 / U:91.868 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site