include/asm-sparc64/iommu.h

   1 /* $Id: iommu.h,v 1.10 2001/03/08 09:55:56 davem Exp $
   2  * iommu.h: Definitions for the sun5 IOMMU.
   3  *
   4  * Copyright (C) 1996, 1999 David S. Miller (davem@caip.rutgers.edu)
   5  */
   6 #ifndef _SPARC64_IOMMU_H
   7 #define _SPARC64_IOMMU_H
   8
   9 /* The format of an iopte in the page tables. */
  10 #define IOPTE_VALID   0x8000000000000000UL /* IOPTE is valid                  */
  11 #define IOPTE_64K     0x2000000000000000UL /* IOPTE is for 64k page           */
  12 #define IOPTE_STBUF   0x1000000000000000UL /* DVMA can use streaming buffer   */
  13 #define IOPTE_INTRA   0x0800000000000000UL /* SBUS slot-->slot direct transfer*/
  14 #define IOPTE_CONTEXT 0x07ff800000000000UL /* Context number                  */
  15 #define IOPTE_PAGE    0x00007fffffffe000UL /* Physical page number (PA[42:13])*/
  16 #define IOPTE_CACHE   0x0000000000000010UL /* Cached (in UPA E-cache)         */
  17 #define IOPTE_WRITE   0x0000000000000002UL /* Writeable                       */
  18
  19 #define IOMMU_NUM_CTXS  4096
  20
  21 #endif /* !(_SPARC_IOMMU_H) */