NetBSD/sys/dev/vme/vmevar.h

212 lines
6.7 KiB
C

/* $NetBSD: vmevar.h,v 1.6 1999/06/30 15:06:05 drochner Exp $ */
/*
* Copyright (c) 1999
* Matthias Drochner. 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 _vmevar_h_
#define _vmevar_h_
typedef u_int32_t vme_addr_t, vme_size_t;
typedef int vme_am_t;
typedef enum {
VME_D8 = 1,
VME_D16 = 2,
VME_D32 = 4
} vme_datasize_t;
typedef int vme_swap_t; /* hardware swap capabilities,
placeholder - contents to be specified */
#ifdef _KERNEL
/* generic placeholder for any ressources needed for a mapping,
overloaded by bus interface driver */
typedef void *vme_mapresc_t;
/* describes interrupt mapping, overloaded by bus interface driver */
typedef void *vme_intr_handle_t;
/*
* tag structure passed to VME bus devices,
* contains the bus dependant functions, accessed via macros below
*/
typedef struct vme_chipset_tag {
void *cookie;
int (*vct_map) __P((void *, vme_addr_t, vme_size_t,
vme_am_t, vme_datasize_t, vme_swap_t,
bus_space_tag_t *, bus_space_handle_t *,
vme_mapresc_t *));
void (*vct_unmap) __P((void *, vme_mapresc_t));
int (*vct_probe) __P((void *, vme_addr_t, vme_size_t,
vme_am_t, vme_datasize_t,
int (*)(void *, bus_space_tag_t, bus_space_handle_t),
void *));
int (*vct_int_map) __P((void *, int, int, vme_intr_handle_t *));
void *(*vct_int_establish) __P((void *, vme_intr_handle_t, int,
int (*)(void *), void *));
void (*vct_int_disestablish) __P((void *, void *));
int (*vct_dmamap_create) __P((void *, vme_size_t,
vme_am_t, vme_datasize_t, vme_swap_t,
int, vme_size_t, vme_addr_t,
int, bus_dmamap_t *));
void (*vct_dmamap_destroy) __P((void *, bus_dmamap_t));
/*
* This sucks: we have to give all the VME specific arguments
* twice - for dmamem_alloc and for dmamem_create. Perhaps
* give a "dmamap" argument here, meaning: "allocate memory which
* can be accessed through this DMA map".
*/
int (*vct_dmamem_alloc) __P((void *, vme_size_t,
vme_am_t, vme_datasize_t, vme_swap_t,
bus_dma_segment_t *, int, int *, int));
void (*vct_dmamem_free) __P((void *, bus_dma_segment_t *, int));
struct vmebus_softc *bus;
} *vme_chipset_tag_t;
/*
* map / unmap: map VME address ranges into kernel address space
* XXX should have mapping to CPU only to allow user mmap() without
* wasting kvm
*/
#define vme_space_map(vc, vmeaddr, len, am, datasize, swap, tag, handle, resc) \
(*((vc)->vct_map))((vc)->cookie, (vmeaddr), (len), (am), (datasize), \
(swap), (tag), (handle), (resc))
#define vme_space_unmap(vc, resc) \
(*((vc)->vct_unmap))((vc)->cookie, (resc))
/*
* probe: check readability or call callback
*/
#define vme_probe(vc, vmeaddr, len, am, datasize, callback, cbarg) \
(*((vc)->vct_probe))((vc)->cookie, (vmeaddr), (len), (am), (datasize), \
(callback), (cbarg))
/*
* install / deinstall VME interrupt handler
*/
#define vme_intr_map(vc, level, vector, handlep) \
(*((vc)->vct_int_map))((vc)->cookie, (level), (vector), (handlep))
#define vme_intr_establish(vc, handle, prio, func, arg) \
(*((vc)->vct_int_establish))((vc)->cookie, \
(handle), (prio), (func), (arg))
#define vme_intr_disestablish(vc, cookie) \
(*((vc)->vct_int_unmap))((vc)->cookie, (cookie))
/*
* create DMA map (which is later used by bus independant
* DMA functions)
*/
#define vme_dmamap_create(vc, size, am, datasize, swap, nsegs, segsz, bound, \
flags, map) \
(*((vc)->vct_dmamap_create))((vc)->cookie, (size), (am), (datasize), (swap), \
(nsegs), (segsz), (bound), (flags), (map))
#define vme_dmamap_destroy(vc, map) \
(*((vc)->vct_dmamap_destroy))((vc)->cookie, (map))
/*
* allocate memory directly accessible from VME
*/
#define vme_dmamem_alloc(vc, size, am, datasize, swap, \
segs, nsegs, rsegs, flags) \
(*((vc)->vct_dmamem_alloc))((vc)->cookie, (size), (am), (datasize), (swap), \
(segs), (nsegs), (rsegs), (flags))
#define vme_dmamem_free(vc, segs, nsegs) \
(*((vc)->vct_dmamem_free))((vc)->cookie, (segs), (nsegs))
/*
* autoconfiguration data structures
*/
struct vme_attach_args;
typedef void (*vme_slaveconf_callback) __P((struct device *,
struct vme_attach_args *));
struct vmebus_attach_args {
vme_chipset_tag_t va_vct;
bus_dma_tag_t va_bdt;
vme_slaveconf_callback va_slaveconfig;
};
struct vmebus_softc {
struct device sc_dev;
vme_chipset_tag_t sc_vct;
bus_dma_tag_t sc_bdt;
vme_slaveconf_callback slaveconfig;
struct extent *vme32ext, *vme24ext, *vme16ext;
};
#define VME_MAXCFRANGES 3
struct vme_range {
vme_addr_t offset;
vme_size_t size;
vme_am_t am;
};
struct vme_attach_args {
vme_chipset_tag_t va_vct;
bus_dma_tag_t va_bdt;
int ivector, ilevel;
int numcfranges;
struct vme_range r[VME_MAXCFRANGES];
};
/*
* address space accounting
*/
int _vme_space_alloc __P((struct vmebus_softc *, vme_addr_t,
vme_size_t, vme_am_t));
void _vme_space_free __P((struct vmebus_softc *, vme_addr_t,
vme_size_t, vme_am_t));
int _vme_space_get __P((struct vmebus_softc *, vme_size_t, vme_am_t,
u_long, vme_addr_t*));
#define vme_space_alloc(tag, addr, size, ams) \
_vme_space_alloc(tag->bus, addr, size, ams)
#define vme_space_free(tag, addr, size, ams) \
_vme_space_free(tag->bus, addr, size, ams)
#define vme_space_get(tag, size, ams, align, addr) \
_vme_space_get(tag->bus, size, ams, align, addr)
#endif /* KERNEL */
#endif /* _vmevar_h_ */