5c6bf5ad03
sysio streaming buffer flushes write a single 8-byte aligned 8-byte value. psycho streaming buffer flushes write a 64-byte aligned 64-byte block. So separate out the streaming buffers into their own structure and pass those in to all iommu operations. This also means we only flush the correct streaming buffer for psycho rather than needing to flush both just in case.
94 lines
3.9 KiB
C
94 lines
3.9 KiB
C
/* $NetBSD: iommuvar.h,v 1.12 2002/06/20 18:26:24 eeh Exp $ */
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/*
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* Copyright (c) 1999 Matthew R. Green
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _SPARC64_DEV_IOMMUVAR_H_
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#define _SPARC64_DEV_IOMMUVAR_H_
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/*
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* Streaming buffer control
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*
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* It's easy to deal w/sysio since it has a single streaming buffer, and
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* flushes are done on 8-byte boundaries. But psycho is a pain since it
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* has two streaming buffers and the streaming buffer flush dumps 64 bytes
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* of data.
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*/
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struct strbuf_ctl {
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struct iommu_state *sb_is; /* Pointer to our iommu */
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bus_space_handle_t sb_sb; /* Handle for our regs */
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paddr_t sb_flushpa; /* to flush streaming buffers */
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volatile int64_t *sb_flush;
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};
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/*
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* per-IOMMU state
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*/
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struct iommu_state {
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paddr_t is_ptsb; /* TSB physical address */
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int64_t *is_tsb; /* TSB virtual address */
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int is_tsbsize; /* 0 = 8K, ... */
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u_int is_dvmabase;
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u_int is_dvmaend;
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int64_t is_cr; /* IOMMU control regiter value */
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struct extent *is_dvmamap; /* DVMA map for this instance */
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struct strbuf_ctl *is_sb[2]; /* Streaming buffers if any */
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/* copies of our parents state, to allow us to be self contained */
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bus_space_tag_t is_bustag; /* our bus tag */
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bus_space_handle_t is_iommu; /* IOMMU registers */
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};
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/* interfaces for PCI/SBUS code */
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void iommu_init __P((char *, struct iommu_state *, int, u_int32_t));
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void iommu_reset __P((struct iommu_state *));
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void iommu_enter __P((struct strbuf_ctl *, vaddr_t, int64_t, int));
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void iommu_remove __P((struct iommu_state *, vaddr_t, size_t));
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paddr_t iommu_extract __P((struct iommu_state *, vaddr_t));
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int iommu_dvmamap_load __P((bus_dma_tag_t, struct strbuf_ctl *,
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bus_dmamap_t, void *, bus_size_t, struct proc *, int));
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void iommu_dvmamap_unload __P((bus_dma_tag_t, struct strbuf_ctl *,
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bus_dmamap_t));
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int iommu_dvmamap_load_raw __P((bus_dma_tag_t, struct strbuf_ctl *,
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bus_dmamap_t, bus_dma_segment_t *, int, int, bus_size_t));
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void iommu_dvmamap_sync __P((bus_dma_tag_t, struct strbuf_ctl *,
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bus_dmamap_t, bus_addr_t, bus_size_t, int));
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int iommu_dvmamem_alloc __P((bus_dma_tag_t, struct strbuf_ctl *,
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bus_size_t, bus_size_t, bus_size_t, bus_dma_segment_t *,
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int, int *, int));
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void iommu_dvmamem_free __P((bus_dma_tag_t, struct strbuf_ctl *,
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bus_dma_segment_t *, int));
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int iommu_dvmamem_map __P((bus_dma_tag_t, struct strbuf_ctl *,
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bus_dma_segment_t *, int, size_t, caddr_t *, int));
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void iommu_dvmamem_unmap __P((bus_dma_tag_t, struct strbuf_ctl *,
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caddr_t, size_t));
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#endif /* _SPARC64_DEV_IOMMUVAR_H_ */
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