footbridge_com_io.c revision 1.8
1 /* $NetBSD: footbridge_com_io.c,v 1.8 2012/02/12 16:34:07 matt 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/cdefs.h> 46 __KERNEL_RCSID(0, "$NetBSD: footbridge_com_io.c,v 1.8 2012/02/12 16:34:07 matt Exp $"); 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/bus.h> 51 52 /* Proto types for all the bus_space structure functions */ 53 54 bs_protos(fcomcons); 55 bs_protos(generic); 56 bs_protos(bs_notimpl); 57 58 /* Declare the fcomcons bus space tag */ 59 60 struct bus_space fcomcons_bs_tag = { 61 /* cookie */ 62 NULL, 63 64 /* mapping/unmapping */ 65 fcomcons_bs_map, 66 fcomcons_bs_unmap, 67 fcomcons_bs_subregion, 68 69 /* allocation/deallocation */ 70 fcomcons_bs_alloc, 71 fcomcons_bs_free, 72 73 /* get kernel virtual address */ 74 0, /* never used */ 75 76 /* Mmap bus space for user */ 77 bs_notimpl_bs_mmap, 78 79 /* barrier */ 80 fcomcons_bs_barrier, 81 82 /* read (single) */ 83 bs_notimpl_bs_r_1, 84 bs_notimpl_bs_r_2, 85 generic_bs_r_4, 86 bs_notimpl_bs_r_8, 87 88 /* read multiple */ 89 bs_notimpl_bs_rm_1, 90 bs_notimpl_bs_rm_2, 91 bs_notimpl_bs_rm_4, 92 bs_notimpl_bs_rm_8, 93 94 /* read region */ 95 bs_notimpl_bs_rr_1, 96 bs_notimpl_bs_rr_2, 97 bs_notimpl_bs_rr_4, 98 bs_notimpl_bs_rr_8, 99 100 /* write (single) */ 101 bs_notimpl_bs_w_1, 102 bs_notimpl_bs_w_2, 103 generic_bs_w_4, 104 bs_notimpl_bs_w_8, 105 106 /* write multiple */ 107 bs_notimpl_bs_wm_1, 108 bs_notimpl_bs_wm_2, 109 bs_notimpl_bs_wm_4, 110 bs_notimpl_bs_wm_8, 111 112 /* write region */ 113 bs_notimpl_bs_wr_1, 114 bs_notimpl_bs_wr_2, 115 bs_notimpl_bs_wr_4, 116 bs_notimpl_bs_wr_8, 117 118 bs_notimpl_bs_sm_1, 119 bs_notimpl_bs_sm_2, 120 bs_notimpl_bs_sm_4, 121 bs_notimpl_bs_sm_8, 122 123 /* set region */ 124 bs_notimpl_bs_sr_1, 125 bs_notimpl_bs_sr_2, 126 bs_notimpl_bs_sr_4, 127 bs_notimpl_bs_sr_8, 128 129 /* copy */ 130 bs_notimpl_bs_c_1, 131 bs_notimpl_bs_c_2, 132 bs_notimpl_bs_c_4, 133 bs_notimpl_bs_c_8, 134 }; 135 136 /* bus space functions */ 137 138 int 139 fcomcons_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int cacheable, 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 fcomcons_bs_alloc( 152 void *t, 153 bus_addr_t rstart, 154 bus_addr_t rend, 155 bus_size_t size, 156 bus_size_t alignment, 157 bus_size_t boundary, 158 int cacheable, 159 bus_addr_t *bpap, 160 bus_space_handle_t *bshp) 161 { 162 panic("fcomcons_alloc(): Help!"); 163 } 164 165 166 void 167 fcomcons_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 168 { 169 /* 170 * Temporary implementation 171 */ 172 } 173 174 void 175 fcomcons_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 176 { 177 178 panic("fcomcons_free(): Help!"); 179 /* fcomcons_unmap() does all that we need to do. */ 180 /* fcomcons_unmap(t, bsh, size);*/ 181 } 182 183 int 184 fcomcons_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp) 185 { 186 187 *nbshp = bsh + offset; 188 return (0); 189 } 190 191 void 192 fcomcons_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, bus_size_t len, int flags) 193 { 194 } 195 196 /* End of footbridge_com_io.c */ 197
Indexes created Wed Oct 01 13:09:50 GMT 2025