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iomd_io.c revision 1.3 
      1 /*	$NetBSD: iomd_io.c,v 1.3 2003/07/15 00:24:45 lukem 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/cdefs.h>
     41 __KERNEL_RCSID(0, "$NetBSD: iomd_io.c,v 1.3 2003/07/15 00:24:45 lukem Exp $");
     42 
     43 #include <sys/param.h>
     44 #include <sys/systm.h>
     45 #include <machine/bus.h>
     46 
     47 /* Proto types for all the bus_space structure functions */
     48 
     49 bs_protos(iomd);
     50 bs_protos(bs_notimpl);
     51 
     52 /* Declare the iomd bus space tag */
     53 
     54 struct bus_space iomd_bs_tag = {
     55 	/* cookie */
     56 	NULL,
     57 
     58 	/* mapping/unmapping */
     59 	iomd_bs_map,
     60 	iomd_bs_unmap,
     61 	iomd_bs_subregion,
     62 
     63 	/* allocation/deallocation */
     64 	iomd_bs_alloc,
     65 	iomd_bs_free,
     66 
     67 	/* get kernel virtual address */
     68 	0, /* there is no linear mapping */
     69 
     70 	/* mmap bus space for userland */
     71 	bs_notimpl_bs_mmap,	/* XXX correct? XXX */
     72 
     73 	/* barrier */
     74 	iomd_bs_barrier,
     75 
     76 	/* read (single) */
     77 	iomd_bs_r_1,
     78 	iomd_bs_r_2,
     79 	iomd_bs_r_4,
     80 	bs_notimpl_bs_r_8,
     81 
     82 	/* read multiple */
     83 	bs_notimpl_bs_rm_1,
     84 	iomd_bs_rm_2,
     85 	bs_notimpl_bs_rm_4,
     86 	bs_notimpl_bs_rm_8,
     87 
     88 	/* read region */
     89 	bs_notimpl_bs_rr_1,
     90 	bs_notimpl_bs_rr_2,
     91 	bs_notimpl_bs_rr_4,
     92 	bs_notimpl_bs_rr_8,
     93 
     94 	/* write (single) */
     95 	iomd_bs_w_1,
     96 	iomd_bs_w_2,
     97 	iomd_bs_w_4,
     98 	bs_notimpl_bs_w_8,
     99 
    100 	/* write multiple */
    101 	bs_notimpl_bs_wm_1,
    102 	iomd_bs_wm_2,
    103 	bs_notimpl_bs_wm_4,
    104 	bs_notimpl_bs_wm_8,
    105 
    106 	/* write region */
    107 	bs_notimpl_bs_wr_1,
    108 	bs_notimpl_bs_wr_2,
    109 	bs_notimpl_bs_wr_4,
    110 	bs_notimpl_bs_wr_8,
    111 
    112 	/* set multiple */
    113 	bs_notimpl_bs_sm_1,
    114 	bs_notimpl_bs_sm_2,
    115 	bs_notimpl_bs_sm_4,
    116 	bs_notimpl_bs_sm_8,
    117 
    118 	/* set region */
    119 	bs_notimpl_bs_sr_1,
    120 	bs_notimpl_bs_sr_2,
    121 	bs_notimpl_bs_sr_4,
    122 	bs_notimpl_bs_sr_8,
    123 
    124 	/* copy */
    125 	bs_notimpl_bs_c_1,
    126 	bs_notimpl_bs_c_2,
    127 	bs_notimpl_bs_c_4,
    128 	bs_notimpl_bs_c_8,
    129 };
    130 
    131 /* bus space functions */
    132 
    133 int
    134 iomd_bs_map(t, bpa, size, cacheable, bshp)
    135 	void *t;
    136 	bus_addr_t bpa;
    137 	bus_size_t size;
    138 	int cacheable;
    139 	bus_space_handle_t *bshp;
    140 {
    141 	/*
    142 	 * Temporary implementation as all I/O is already mapped etc.
    143 	 *
    144 	 * Eventually this function will do the mapping check for multiple maps
    145 	 */
    146 	*bshp = bpa;
    147 	return(0);
    148 	}
    149 
    150 int
    151 iomd_bs_alloc(t, rstart, rend, size, alignment, boundary, cacheable,
    152     bpap, bshp)
    153 	void *t;
    154 	bus_addr_t rstart, rend;
    155 	bus_size_t size, alignment, boundary;
    156 	int cacheable;
    157 	bus_addr_t *bpap;
    158 	bus_space_handle_t *bshp;
    159 {
    160 	panic("iomd_alloc(): Help!");
    161 }
    162 
    163 
    164 void
    165 iomd_bs_unmap(t, bsh, size)
    166 	void *t;
    167 	bus_space_handle_t bsh;
    168 	bus_size_t size;
    169 {
    170 	/*
    171 	 * Temporary implementation
    172 	 */
    173 }
    174 
    175 void
    176 iomd_bs_free(t, bsh, size)
    177 	void *t;
    178 	bus_space_handle_t bsh;
    179 	bus_size_t size;
    180 {
    181 
    182 	panic("iomd_free(): Help!");
    183 	/* iomd_unmap() does all that we need to do. */
    184 /*	iomd_unmap(t, bsh, size);*/
    185 }
    186 
    187 int
    188 iomd_bs_subregion(t, bsh, offset, size, nbshp)
    189 	void *t;
    190 	bus_space_handle_t bsh;
    191 	bus_size_t offset, size;
    192 	bus_space_handle_t *nbshp;
    193 {
    194 
    195 	*nbshp = bsh + (offset << 2);
    196 	return (0);
    197 }
    198 
    199 void
    200 iomd_bs_barrier(t, bsh, offset, len, flags)
    201 	void *t;
    202 	bus_space_handle_t bsh;
    203 	bus_size_t offset, len;
    204 	int flags;
    205 {
    206 }
    207 
    208 /* End of iomd_io.c */
    209