target/linux/ubicom32/files/arch/ubicom32/include/asm/scatterlist.h

   1 /*
   2  * arch/ubicom32/include/asm/scatterlist.h
   3  *   Definitions of struct scatterlist for Ubicom32 architecture.
   4  *
   5  * (C) Copyright 2009, Ubicom, Inc.
   6  *
   7  * This file is part of the Ubicom32 Linux Kernel Port.
   8  *
   9  * The Ubicom32 Linux Kernel Port is free software: you can redistribute
  10  * it and/or modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation, either version 2 of the
  12  * License, or (at your option) any later version.
  13  *
  14  * The Ubicom32 Linux Kernel Port is distributed in the hope that it
  15  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  16  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  17  * the GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with the Ubicom32 Linux Kernel Port.  If not,
  21  * see <http://www.gnu.org/licenses/>.
  22  *
  23  * Ubicom32 implementation derived from (with many thanks):
  24  *   arch/m68knommu
  25  *   arch/blackfin
  26  *   arch/parisc
  27  */
  28 #ifndef _ASM_UBICOM32_SCATTERLIST_H
  29 #define _ASM_UBICOM32_SCATTERLIST_H
  30
  31 #include <linux/mm.h>
  32 #include <asm/types.h>
  33
  34 struct scatterlist {
  35 #ifdef CONFIG_DEBUG_SG
  36         unsigned long   sg_magic;
  37 #endif
  38         unsigned long   page_link;
  39         unsigned int    offset;
  40         dma_addr_t      dma_address;
  41         unsigned int    length;
  42 };
  43
  44 #define sg_dma_address(sg)      ((sg)->dma_address)
  45 #define sg_dma_len(sg)          ((sg)->length)
  46
  47 #define ISA_DMA_THRESHOLD       (0xffffffff)
  48
  49 #endif /* _ASM_UBICOM32_SCATTERLIST_H */