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 0x8000000000000000 /* IOPTE is valid */ 11 #define IOPTE_64K 0x2000000000000000 /* IOPTE is for 64k page */ 12 #define IOPTE_STBUF 0x1000000000000000 /* DVMA can use streaming buffer */ 13 #define IOPTE_INTRA 0x0800000000000000 /* SBUS slot-->slot direct transfer */ 14 #define IOPTE_CONTEXT 0x07ff800000000000 /* Context number */ 15 #define IOPTE_PAGE 0x00007fffffffe000 /* Physical page number (PA[42:13]) */ 16 #define IOPTE_CACHE 0x0000000000000010 /* Cached (in UPA E-cache) */ 17 #define IOPTE_WRITE 0x0000000000000002 /* Writeable */ 18 19 #endif /* !(_SPARC_IOMMU_H) */ 20