214 lines
6.6 KiB
C
214 lines
6.6 KiB
C
/* $NetBSD: vmevar.h,v 1.14 2012/10/27 17:18:38 chs Exp $ */
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/*
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* Copyright (c) 1999
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* Matthias Drochner. 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, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef _VMEVAR_H_
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#define _VMEVAR_H_
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typedef u_int32_t vme_addr_t, vme_size_t;
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typedef int vme_am_t;
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typedef enum {
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VME_D8 = 1,
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VME_D16 = 2,
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VME_D32 = 4
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} vme_datasize_t;
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typedef int vme_swap_t; /* hardware swap capabilities,
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placeholder - contents to be specified */
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#ifdef _KERNEL
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/*
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* Generic placeholder for any resources needed for a mapping,
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* overloaded by bus interface driver
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*/
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typedef void *vme_mapresc_t;
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/* Describes interrupt mapping, opaque to MI drivers */
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typedef void *vme_intr_handle_t;
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/*
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* Tag structure passed to VME bus devices;
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* contains the bus dependent functions, accessed via macros below.
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*/
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typedef struct vme_chipset_tag {
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void *cookie;
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int (*vct_map)(void *, vme_addr_t, vme_size_t,
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vme_am_t, vme_datasize_t, vme_swap_t,
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bus_space_tag_t *, bus_space_handle_t *,
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vme_mapresc_t *);
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void (*vct_unmap)(void *, vme_mapresc_t);
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int (*vct_probe)(void *, vme_addr_t, vme_size_t,
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vme_am_t, vme_datasize_t,
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int (*)(void *, bus_space_tag_t, bus_space_handle_t),
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void *);
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int (*vct_int_map)(void *, int, int, vme_intr_handle_t *);
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const struct evcnt *(*vct_int_evcnt)(void *, vme_intr_handle_t);
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void *(*vct_int_establish)(void *, vme_intr_handle_t, int,
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int (*)(void *), void *);
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void (*vct_int_disestablish)(void *, void *);
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int (*vct_dmamap_create)(void *, vme_size_t,
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vme_am_t, vme_datasize_t, vme_swap_t,
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int, vme_size_t, vme_addr_t,
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int, bus_dmamap_t *);
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void (*vct_dmamap_destroy)(void *, bus_dmamap_t);
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/*
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* This sucks: we have to give all the VME specific arguments
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* twice - for dmamem_alloc and for dmamem_create. Perhaps
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* give a "dmamap" argument here, meaning: "allocate memory which
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* can be accessed through this DMA map".
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*/
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int (*vct_dmamem_alloc)(void *, vme_size_t,
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vme_am_t, vme_datasize_t, vme_swap_t,
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bus_dma_segment_t *, int, int *, int);
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void (*vct_dmamem_free)(void *, bus_dma_segment_t *, int);
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struct vmebus_softc *bus;
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} *vme_chipset_tag_t;
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/*
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* map / unmap: map VME address ranges into kernel address space
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* XXX should have mapping to CPU only to allow user mmap() without
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* wasting kvm
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*/
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#define vme_space_map(vc, vmeaddr, len, am, datasize, swap, tag, handle, resc) \
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(*((vc)->vct_map))((vc)->cookie, (vmeaddr), (len), (am), (datasize), \
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(swap), (tag), (handle), (resc))
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#define vme_space_unmap(vc, resc) \
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(*((vc)->vct_unmap))((vc)->cookie, (resc))
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/*
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* probe: check readability or call callback.
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*/
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#define vme_probe(vc, vmeaddr, len, am, datasize, callback, cbarg) \
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(*((vc)->vct_probe))((vc)->cookie, (vmeaddr), (len), (am), \
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(datasize), (callback), (cbarg))
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/*
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* install / deinstall VME interrupt handler.
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*/
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#define vme_intr_map(vc, level, vector, handlep) \
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(*((vc)->vct_int_map))((vc)->cookie, (level), (vector), (handlep))
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#define vme_intr_evcnt(vc, handle) \
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(*((vc)->vct_int_evcnt))((vc)->cookie, (handle))
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#define vme_intr_establish(vc, handle, prio, func, arg) \
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(*((vc)->vct_int_establish))((vc)->cookie, \
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(handle), (prio), (func), (arg))
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#define vme_intr_disestablish(vc, cookie) \
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(*((vc)->vct_int_unmap))((vc)->cookie, (cookie))
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/*
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* Create DMA map (which is later used by bus independent DMA functions).
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*/
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#define vme_dmamap_create(vc, size, am, datasize, swap, nsegs, segsz, bound, \
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flags, map) \
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(*((vc)->vct_dmamap_create))((vc)->cookie, (size), (am), (datasize), \
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(swap), (nsegs), (segsz), (bound), (flags), (map))
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#define vme_dmamap_destroy(vc, map) \
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(*((vc)->vct_dmamap_destroy))((vc)->cookie, (map))
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/*
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* Allocate memory directly accessible from VME.
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*/
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#define vme_dmamem_alloc(vc, size, am, datasize, swap, \
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segs, nsegs, rsegs, flags) \
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(*((vc)->vct_dmamem_alloc))((vc)->cookie, (size), (am), (datasize), (swap), \
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(segs), (nsegs), (rsegs), (flags))
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#define vme_dmamem_free(vc, segs, nsegs) \
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(*((vc)->vct_dmamem_free))((vc)->cookie, (segs), (nsegs))
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/*
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* Autoconfiguration data structures.
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*/
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struct vme_attach_args;
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typedef void (*vme_slaveconf_callback)(device_t,
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struct vme_attach_args *);
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struct vmebus_attach_args {
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vme_chipset_tag_t va_vct;
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bus_dma_tag_t va_bdt;
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vme_slaveconf_callback va_slaveconfig;
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};
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struct extent;
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struct vmebus_softc {
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vme_chipset_tag_t sc_vct;
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bus_dma_tag_t sc_bdt;
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vme_slaveconf_callback slaveconfig;
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struct extent *vme32ext, *vme24ext, *vme16ext;
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};
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#define VME_MAXCFRANGES 3
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struct vme_range {
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vme_addr_t offset;
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vme_size_t size;
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vme_am_t am;
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};
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struct vme_attach_args {
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vme_chipset_tag_t va_vct;
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bus_dma_tag_t va_bdt;
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int ivector, ilevel;
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int numcfranges;
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struct vme_range r[VME_MAXCFRANGES];
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};
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/*
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* Address space accounting.
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*/
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int _vme_space_alloc(struct vmebus_softc *, vme_addr_t, vme_size_t, vme_am_t);
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void _vme_space_free(struct vmebus_softc *, vme_addr_t, vme_size_t, vme_am_t);
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int _vme_space_get(struct vmebus_softc *, vme_size_t, vme_am_t,
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u_long, vme_addr_t*);
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#define vme_space_alloc(tag, addr, size, ams) \
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_vme_space_alloc(tag->bus, addr, size, ams)
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#define vme_space_free(tag, addr, size, ams) \
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_vme_space_free(tag->bus, addr, size, ams)
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#define vme_space_get(tag, size, ams, align, addr) \
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_vme_space_get(tag->bus, size, ams, align, addr)
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#endif /* KERNEL */
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#endif /* _VMEVAR_H_ */
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