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footbridge_com_io.c revision 1.1 
      1 /*	$NetBSD: footbridge_com_io.c,v 1.1 2001/06/09 10:29:12 chris 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  *	for the NetBSD Project.
     20  * 4. The name of the company nor the name of the author may be used to
     21  *    endorse or promote products derived from this software without specific
     22  *    prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     25  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     26  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     27  * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     28  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     29  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     30  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  */
     36 
     37 /*
     38  * This file provides the bus space tag for the footbridge serial console
     39  */
     40 
     41 /*
     42  * bus_space I/O functions for mainbus
     43  */
     44 
     45 #include <sys/param.h>
     46 #include <sys/systm.h>
     47 #include <machine/bus.h>
     48 
     49 /* Proto types for all the bus_space structure functions */
     50 
     51 bs_protos(fcomcons);
     52 bs_protos(bs_notimpl);
     53 
     54 /* Declare the fcomcons bus space tag */
     55 
     56 struct bus_space fcomcons_bs_tag = {
     57 	/* cookie */
     58 	NULL,
     59 
     60 	/* mapping/unmapping */
     61 	fcomcons_bs_map,
     62 	fcomcons_bs_unmap,
     63 	fcomcons_bs_subregion,
     64 
     65 	/* allocation/deallocation */
     66 	fcomcons_bs_alloc,
     67 	fcomcons_bs_free,
     68 
     69 	/* get kernel virtual address */
     70 	0, /* never used */
     71 
     72 	/* barrier */
     73 	fcomcons_bs_barrier,
     74 
     75 	/* read (single) */
     76 	bs_notimpl_bs_r_1,
     77 	bs_notimpl_bs_r_2,
     78 	fcomcons_bs_r_4,
     79 	bs_notimpl_bs_r_8,
     80 
     81 	/* read multiple */
     82 	bs_notimpl_bs_rm_1,
     83 	bs_notimpl_bs_rm_2,
     84 	bs_notimpl_bs_rm_4,
     85 	bs_notimpl_bs_rm_8,
     86 
     87 	/* read region */
     88 	bs_notimpl_bs_rr_1,
     89 	bs_notimpl_bs_rr_2,
     90 	bs_notimpl_bs_rr_4,
     91 	bs_notimpl_bs_rr_8,
     92 
     93 	/* write (single) */
     94 	bs_notimpl_bs_w_1,
     95 	bs_notimpl_bs_w_2,
     96 	fcomcons_bs_w_4,
     97 	bs_notimpl_bs_w_8,
     98 
     99 	/* write multiple */
    100 	bs_notimpl_bs_wm_1,
    101 	bs_notimpl_bs_wm_2,
    102 	bs_notimpl_bs_wm_4,
    103 	bs_notimpl_bs_wm_8,
    104 
    105 	/* write region */
    106 	bs_notimpl_bs_wr_1,
    107 	bs_notimpl_bs_wr_2,
    108 	bs_notimpl_bs_wr_4,
    109 	bs_notimpl_bs_wr_8,
    110 
    111 	bs_notimpl_bs_sm_1,
    112 	bs_notimpl_bs_sm_2,
    113 	bs_notimpl_bs_sm_4,
    114 	bs_notimpl_bs_sm_8,
    115 
    116 	/* set region */
    117 	bs_notimpl_bs_sr_1,
    118 	bs_notimpl_bs_sr_2,
    119 	bs_notimpl_bs_sr_4,
    120 	bs_notimpl_bs_sr_8,
    121 
    122 	/* copy */
    123 	bs_notimpl_bs_c_1,
    124 	bs_notimpl_bs_c_2,
    125 	bs_notimpl_bs_c_4,
    126 	bs_notimpl_bs_c_8,
    127 };
    128 
    129 /* bus space functions */
    130 
    131 int
    132 fcomcons_bs_map(t, bpa, size, cacheable, bshp)
    133 	void *t;
    134 	bus_addr_t bpa;
    135 	bus_size_t size;
    136 	int cacheable;
    137 	bus_space_handle_t *bshp;
    138 {
    139 	/*
    140 	 * Temporary implementation as all I/O is already mapped etc.
    141 	 *
    142 	 * Eventually this function will do the mapping check for multiple maps
    143 	 */
    144 	*bshp = bpa;
    145 	return(0);
    146 	}
    147 
    148 int
    149 fcomcons_bs_alloc(t, rstart, rend, size, alignment, boundary, cacheable,
    150     bpap, bshp)
    151 	void *t;
    152 	bus_addr_t rstart, rend;
    153 	bus_size_t size, alignment, boundary;
    154 	int cacheable;
    155 	bus_addr_t *bpap;
    156 	bus_space_handle_t *bshp;
    157 {
    158 	panic("fcomcons_alloc(): Help!\n");
    159 }
    160 
    161 
    162 void
    163 fcomcons_bs_unmap(t, bsh, size)
    164 	void *t;
    165 	bus_space_handle_t bsh;
    166 	bus_size_t size;
    167 {
    168 	/*
    169 	 * Temporary implementation
    170 	 */
    171 }
    172 
    173 void
    174 fcomcons_bs_free(t, bsh, size)
    175 	void *t;
    176 	bus_space_handle_t bsh;
    177 	bus_size_t size;
    178 {
    179 
    180 	panic("fcomcons_free(): Help!\n");
    181 	/* fcomcons_unmap() does all that we need to do. */
    182 /*	fcomcons_unmap(t, bsh, size);*/
    183 }
    184 
    185 int
    186 fcomcons_bs_subregion(t, bsh, offset, size, nbshp)
    187 	void *t;
    188 	bus_space_handle_t bsh;
    189 	bus_size_t offset, size;
    190 	bus_space_handle_t *nbshp;
    191 {
    192 
    193 	*nbshp = bsh + offset;
    194 	return (0);
    195 }
    196 
    197 void
    198 fcomcons_bs_barrier(t, bsh, offset, len, flags)
    199 	void *t;
    200 	bus_space_handle_t bsh;
    201 	bus_size_t offset, len;
    202 	int flags;
    203 {
    204 }
    205 
    206 /* End of footbridge_com_io.c */
    207