diff options
Diffstat (limited to 'sys/arch/sparc64/dev/iommuvar.h')
| -rw-r--r-- | sys/arch/sparc64/dev/iommuvar.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/sys/arch/sparc64/dev/iommuvar.h b/sys/arch/sparc64/dev/iommuvar.h new file mode 100644 index 00000000000..07ac5d65bfa --- /dev/null +++ b/sys/arch/sparc64/dev/iommuvar.h @@ -0,0 +1,79 @@ +/* $NetBSD: iommuvar.h,v 1.7 2001/07/20 00:07:13 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; + 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; + + /* 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; /* streaming buffer */ +}; + +/* interfaces for PCI/SBUS code */ +void iommu_init __P((char *, struct iommu_state *, int, u_int32_t)); +void iommu_reset __P((struct iommu_state *)); +void iommu_enter __P((struct iommu_state *, vaddr_t, int64_t, int)); +void iommu_remove __P((struct iommu_state *, vaddr_t, size_t)); + +int iommu_dvmamap_load __P((bus_dma_tag_t, struct iommu_state *, + bus_dmamap_t, void *, bus_size_t, struct proc *, int)); +void iommu_dvmamap_unload __P((bus_dma_tag_t, struct iommu_state *, + bus_dmamap_t)); +int iommu_dvmamap_load_raw __P((bus_dma_tag_t, struct iommu_state *, + bus_dmamap_t, bus_dma_segment_t *, int, int, bus_size_t)); +void iommu_dvmamap_sync __P((bus_dma_tag_t, struct iommu_state *, + bus_dmamap_t, bus_addr_t, bus_size_t, int)); +int iommu_dvmamem_alloc __P((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 __P((bus_dma_tag_t, struct iommu_state *, + bus_dma_segment_t *, int)); +int iommu_dvmamem_map __P((bus_dma_tag_t, struct iommu_state *, + bus_dma_segment_t *, int, size_t, caddr_t *, int)); +void iommu_dvmamem_unmap __P((bus_dma_tag_t, struct iommu_state *, + caddr_t, size_t)); + +#endif /* _SPARC64_DEV_IOMMUVAR_H_ */ |