iommuvar.h revision 1.6
1/* $OpenBSD: iommuvar.h,v 1.6 2002/03/14 01:26:44 millert Exp $ */ 2/* $NetBSD: iommuvar.h,v 1.9 2001/10/07 20:30:41 eeh Exp $ */ 3 4/* 5 * Copyright (c) 1999 Matthew R. Green 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#ifndef _SPARC64_DEV_IOMMUVAR_H_ 33#define _SPARC64_DEV_IOMMUVAR_H_ 34 35/* 36 * per-IOMMU state 37 */ 38struct iommu_state { 39 paddr_t is_ptsb; /* TSB physical address */ 40 int64_t *is_tsb; /* TSB virtual address */ 41 int is_tsbsize; /* 0 = 8K, ... */ 42 u_int is_dvmabase; 43 u_int is_dvmaend; 44 int64_t is_cr; /* IOMMU control regiter value */ 45 struct extent *is_dvmamap; /* DVMA map for this instance */ 46 47 paddr_t is_flushpa; /* used to flush the SBUS */ 48 /* Needs to be volatile or egcs optimizes away loads */ 49 volatile int64_t is_flush[2]; 50 51 /* copies of our parents state, to allow us to be self contained */ 52 bus_space_tag_t is_bustag; /* our bus tag */ 53 struct iommureg *is_iommu; /* IOMMU registers */ 54 struct iommu_strbuf *is_sb[2]; /* streaming buffer(s) */ 55}; 56 57/* interfaces for PCI/SBUS code */ 58void iommu_init(char *, struct iommu_state *, int, u_int32_t); 59void iommu_reset(struct iommu_state *); 60void iommu_enter(struct iommu_state *, vaddr_t, int64_t, int); 61void iommu_remove(struct iommu_state *, vaddr_t, size_t); 62paddr_t iommu_extract(struct iommu_state *, vaddr_t); 63 64int iommu_dvmamap_load(bus_dma_tag_t, struct iommu_state *, 65 bus_dmamap_t, void *, bus_size_t, struct proc *, int); 66void iommu_dvmamap_unload(bus_dma_tag_t, struct iommu_state *, 67 bus_dmamap_t); 68int iommu_dvmamap_load_raw(bus_dma_tag_t, struct iommu_state *, 69 bus_dmamap_t, bus_dma_segment_t *, int, int, bus_size_t); 70void iommu_dvmamap_sync(bus_dma_tag_t, struct iommu_state *, 71 bus_dmamap_t, bus_addr_t, bus_size_t, int); 72int iommu_dvmamem_alloc(bus_dma_tag_t, struct iommu_state *, 73 bus_size_t, bus_size_t, bus_size_t, bus_dma_segment_t *, 74 int, int *, int); 75void iommu_dvmamem_free(bus_dma_tag_t, struct iommu_state *, 76 bus_dma_segment_t *, int); 77int iommu_dvmamem_map(bus_dma_tag_t, struct iommu_state *, 78 bus_dma_segment_t *, int, size_t, caddr_t *, int); 79void iommu_dvmamem_unmap(bus_dma_tag_t, struct iommu_state *, 80 caddr_t, size_t); 81 82#endif /* _SPARC64_DEV_IOMMUVAR_H_ */ 83