footbridge_com_io.c revision 1.3
1 /* $NetBSD: footbridge_com_io.c,v 1.3 2002/04/12 19:12:31 thorpej 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(generic); 53 bs_protos(bs_notimpl); 54 55 /* Declare the fcomcons bus space tag */ 56 57 struct bus_space fcomcons_bs_tag = { 58 /* cookie */ 59 NULL, 60 61 /* mapping/unmapping */ 62 fcomcons_bs_map, 63 fcomcons_bs_unmap, 64 fcomcons_bs_subregion, 65 66 /* allocation/deallocation */ 67 fcomcons_bs_alloc, 68 fcomcons_bs_free, 69 70 /* get kernel virtual address */ 71 0, /* never used */ 72 73 /* Mmap bus space for user */ 74 bs_notimpl_bs_mmap, 75 76 /* barrier */ 77 fcomcons_bs_barrier, 78 79 /* read (single) */ 80 bs_notimpl_bs_r_1, 81 bs_notimpl_bs_r_2, 82 generic_bs_r_4, 83 bs_notimpl_bs_r_8, 84 85 /* read multiple */ 86 bs_notimpl_bs_rm_1, 87 bs_notimpl_bs_rm_2, 88 bs_notimpl_bs_rm_4, 89 bs_notimpl_bs_rm_8, 90 91 /* read region */ 92 bs_notimpl_bs_rr_1, 93 bs_notimpl_bs_rr_2, 94 bs_notimpl_bs_rr_4, 95 bs_notimpl_bs_rr_8, 96 97 /* write (single) */ 98 bs_notimpl_bs_w_1, 99 bs_notimpl_bs_w_2, 100 generic_bs_w_4, 101 bs_notimpl_bs_w_8, 102 103 /* write multiple */ 104 bs_notimpl_bs_wm_1, 105 bs_notimpl_bs_wm_2, 106 bs_notimpl_bs_wm_4, 107 bs_notimpl_bs_wm_8, 108 109 /* write region */ 110 bs_notimpl_bs_wr_1, 111 bs_notimpl_bs_wr_2, 112 bs_notimpl_bs_wr_4, 113 bs_notimpl_bs_wr_8, 114 115 bs_notimpl_bs_sm_1, 116 bs_notimpl_bs_sm_2, 117 bs_notimpl_bs_sm_4, 118 bs_notimpl_bs_sm_8, 119 120 /* set region */ 121 bs_notimpl_bs_sr_1, 122 bs_notimpl_bs_sr_2, 123 bs_notimpl_bs_sr_4, 124 bs_notimpl_bs_sr_8, 125 126 /* copy */ 127 bs_notimpl_bs_c_1, 128 bs_notimpl_bs_c_2, 129 bs_notimpl_bs_c_4, 130 bs_notimpl_bs_c_8, 131 }; 132 133 /* bus space functions */ 134 135 int 136 fcomcons_bs_map(t, bpa, size, cacheable, bshp) 137 void *t; 138 bus_addr_t bpa; 139 bus_size_t size; 140 int cacheable; 141 bus_space_handle_t *bshp; 142 { 143 /* 144 * Temporary implementation as all I/O is already mapped etc. 145 * 146 * Eventually this function will do the mapping check for multiple maps 147 */ 148 *bshp = bpa; 149 return(0); 150 } 151 152 int 153 fcomcons_bs_alloc(t, rstart, rend, size, alignment, boundary, cacheable, 154 bpap, bshp) 155 void *t; 156 bus_addr_t rstart, rend; 157 bus_size_t size, alignment, boundary; 158 int cacheable; 159 bus_addr_t *bpap; 160 bus_space_handle_t *bshp; 161 { 162 panic("fcomcons_alloc(): Help!\n"); 163 } 164 165 166 void 167 fcomcons_bs_unmap(t, bsh, size) 168 void *t; 169 bus_space_handle_t bsh; 170 bus_size_t size; 171 { 172 /* 173 * Temporary implementation 174 */ 175 } 176 177 void 178 fcomcons_bs_free(t, bsh, size) 179 void *t; 180 bus_space_handle_t bsh; 181 bus_size_t size; 182 { 183 184 panic("fcomcons_free(): Help!\n"); 185 /* fcomcons_unmap() does all that we need to do. */ 186 /* fcomcons_unmap(t, bsh, size);*/ 187 } 188 189 int 190 fcomcons_bs_subregion(t, bsh, offset, size, nbshp) 191 void *t; 192 bus_space_handle_t bsh; 193 bus_size_t offset, size; 194 bus_space_handle_t *nbshp; 195 { 196 197 *nbshp = bsh + offset; 198 return (0); 199 } 200 201 void 202 fcomcons_bs_barrier(t, bsh, offset, len, flags) 203 void *t; 204 bus_space_handle_t bsh; 205 bus_size_t offset, len; 206 int flags; 207 { 208 } 209 210 /* End of footbridge_com_io.c */ 211
Indexes created Wed Oct 01 07:09:59 GMT 2025