/* $OpenBSD: iommuvar.h,v 1.6 2002/03/14 01:26:44 millert Exp $ */ /* $NetBSD: iommuvar.h,v 1.9 2001/10/07 20:30:41 eeh Exp $ */ /* * Copyright (c) 1999 Matthew R. Green * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef _SPARC64_DEV_IOMMUVAR_H_ #define _SPARC64_DEV_IOMMUVAR_H_ /* * per-IOMMU state */ struct iommu_state { paddr_t is_ptsb; /* TSB physical address */ int64_t *is_tsb; /* TSB virtual address */ int is_tsbsize; /* 0 = 8K, ... */ u_int is_dvmabase; u_int is_dvmaend; int64_t is_cr; /* IOMMU control regiter value */ struct extent *is_dvmamap; /* DVMA map for this instance */ paddr_t is_flushpa; /* used to flush the SBUS */ /* Needs to be volatile or egcs optimizes away loads */ volatile int64_t is_flush[2]; /* copies of our parents state, to allow us to be self contained */ bus_space_tag_t is_bustag; /* our bus tag */ struct iommureg *is_iommu; /* IOMMU registers */ struct iommu_strbuf *is_sb[2]; /* streaming buffer(s) */ }; /* interfaces for PCI/SBUS code */ void iommu_init(char *, struct iommu_state *, int, u_int32_t); void iommu_reset(struct iommu_state *); void iommu_enter(struct iommu_state *, vaddr_t, int64_t, int); void iommu_remove(struct iommu_state *, vaddr_t, size_t); paddr_t iommu_extract(struct iommu_state *, vaddr_t); int iommu_dvmamap_load(bus_dma_tag_t, struct iommu_state *, bus_dmamap_t, void *, bus_size_t, struct proc *, int); void iommu_dvmamap_unload(bus_dma_tag_t, struct iommu_state *, bus_dmamap_t); int iommu_dvmamap_load_raw(bus_dma_tag_t, struct iommu_state *, bus_dmamap_t, bus_dma_segment_t *, int, int, bus_size_t); void iommu_dvmamap_sync(bus_dma_tag_t, struct iommu_state *, bus_dmamap_t, bus_addr_t, bus_size_t, int); int iommu_dvmamem_alloc(bus_dma_tag_t, struct iommu_state *, bus_size_t, bus_size_t, bus_size_t, bus_dma_segment_t *, int, int *, int); void iommu_dvmamem_free(bus_dma_tag_t, struct iommu_state *, bus_dma_segment_t *, int); int iommu_dvmamem_map(bus_dma_tag_t, struct iommu_state *, bus_dma_segment_t *, int, size_t, caddr_t *, int); void iommu_dvmamem_unmap(bus_dma_tag_t, struct iommu_state *, caddr_t, size_t); #endif /* _SPARC64_DEV_IOMMUVAR_H_ */