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