Home | History | Annotate | Line # | Download | only in iomd
iomd_io.c revision 1.2 
      1 /*	$NetBSD: iomd_io.c,v 1.2 2002/09/27 15:35:46 provos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997 Mark Brinicombe.
      5  * Copyright (c) 1997 Causality Limited.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by Mark Brinicombe.
     19  * 4. The name of the company nor the name of the author may be used to
     20  *    endorse or promote products derived from this software without specific
     21  *    prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     24  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     25  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     26  * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     27  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     28  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     29  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 /*
     37  * bus_space I/O functions for iomd
     38  */
     39 
     40 #include <sys/param.h>
     41 #include <sys/systm.h>
     42 #include <machine/bus.h>
     43 
     44 /* Proto types for all the bus_space structure functions */
     45 
     46 bs_protos(iomd);
     47 bs_protos(bs_notimpl);
     48 
     49 /* Declare the iomd bus space tag */
     50 
     51 struct bus_space iomd_bs_tag = {
     52 	/* cookie */
     53 	NULL,
     54 
     55 	/* mapping/unmapping */
     56 	iomd_bs_map,
     57 	iomd_bs_unmap,
     58 	iomd_bs_subregion,
     59 
     60 	/* allocation/deallocation */
     61 	iomd_bs_alloc,
     62 	iomd_bs_free,
     63 
     64 	/* get kernel virtual address */
     65 	0, /* there is no linear mapping */
     66 
     67 	/* mmap bus space for userland */
     68 	bs_notimpl_bs_mmap,	/* XXX correct? XXX */
     69 
     70 	/* barrier */
     71 	iomd_bs_barrier,
     72 
     73 	/* read (single) */
     74 	iomd_bs_r_1,
     75 	iomd_bs_r_2,
     76 	iomd_bs_r_4,
     77 	bs_notimpl_bs_r_8,
     78 
     79 	/* read multiple */
     80 	bs_notimpl_bs_rm_1,
     81 	iomd_bs_rm_2,
     82 	bs_notimpl_bs_rm_4,
     83 	bs_notimpl_bs_rm_8,
     84 
     85 	/* read region */
     86 	bs_notimpl_bs_rr_1,
     87 	bs_notimpl_bs_rr_2,
     88 	bs_notimpl_bs_rr_4,
     89 	bs_notimpl_bs_rr_8,
     90 
     91 	/* write (single) */
     92 	iomd_bs_w_1,
     93 	iomd_bs_w_2,
     94 	iomd_bs_w_4,
     95 	bs_notimpl_bs_w_8,
     96 
     97 	/* write multiple */
     98 	bs_notimpl_bs_wm_1,
     99 	iomd_bs_wm_2,
    100 	bs_notimpl_bs_wm_4,
    101 	bs_notimpl_bs_wm_8,
    102 
    103 	/* write region */
    104 	bs_notimpl_bs_wr_1,
    105 	bs_notimpl_bs_wr_2,
    106 	bs_notimpl_bs_wr_4,
    107 	bs_notimpl_bs_wr_8,
    108 
    109 	/* set multiple */
    110 	bs_notimpl_bs_sm_1,
    111 	bs_notimpl_bs_sm_2,
    112 	bs_notimpl_bs_sm_4,
    113 	bs_notimpl_bs_sm_8,
    114 
    115 	/* set region */
    116 	bs_notimpl_bs_sr_1,
    117 	bs_notimpl_bs_sr_2,
    118 	bs_notimpl_bs_sr_4,
    119 	bs_notimpl_bs_sr_8,
    120 
    121 	/* copy */
    122 	bs_notimpl_bs_c_1,
    123 	bs_notimpl_bs_c_2,
    124 	bs_notimpl_bs_c_4,
    125 	bs_notimpl_bs_c_8,
    126 };
    127 
    128 /* bus space functions */
    129 
    130 int
    131 iomd_bs_map(t, bpa, size, cacheable, bshp)
    132 	void *t;
    133 	bus_addr_t bpa;
    134 	bus_size_t size;
    135 	int cacheable;
    136 	bus_space_handle_t *bshp;
    137 {
    138 	/*
    139 	 * Temporary implementation as all I/O is already mapped etc.
    140 	 *
    141 	 * Eventually this function will do the mapping check for multiple maps
    142 	 */
    143 	*bshp = bpa;
    144 	return(0);
    145 	}
    146 
    147 int
    148 iomd_bs_alloc(t, rstart, rend, size, alignment, boundary, cacheable,
    149     bpap, bshp)
    150 	void *t;
    151 	bus_addr_t rstart, rend;
    152 	bus_size_t size, alignment, boundary;
    153 	int cacheable;
    154 	bus_addr_t *bpap;
    155 	bus_space_handle_t *bshp;
    156 {
    157 	panic("iomd_alloc(): Help!");
    158 }
    159 
    160 
    161 void
    162 iomd_bs_unmap(t, bsh, size)
    163 	void *t;
    164 	bus_space_handle_t bsh;
    165 	bus_size_t size;
    166 {
    167 	/*
    168 	 * Temporary implementation
    169 	 */
    170 }
    171 
    172 void
    173 iomd_bs_free(t, bsh, size)
    174 	void *t;
    175 	bus_space_handle_t bsh;
    176 	bus_size_t size;
    177 {
    178 
    179 	panic("iomd_free(): Help!");
    180 	/* iomd_unmap() does all that we need to do. */
    181 /*	iomd_unmap(t, bsh, size);*/
    182 }
    183 
    184 int
    185 iomd_bs_subregion(t, bsh, offset, size, nbshp)
    186 	void *t;
    187 	bus_space_handle_t bsh;
    188 	bus_size_t offset, size;
    189 	bus_space_handle_t *nbshp;
    190 {
    191 
    192 	*nbshp = bsh + (offset << 2);
    193 	return (0);
    194 }
    195 
    196 void
    197 iomd_bs_barrier(t, bsh, offset, len, flags)
    198 	void *t;
    199 	bus_space_handle_t bsh;
    200 	bus_size_t offset, len;
    201 	int flags;
    202 {
    203 }
    204 
    205 /* End of iomd_io.c */
    206