1 /* $NetBSD: footbridge_com_io.c,v 1.10 2021/08/13 11:40:43 skrll 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 1.10 2021/08/13 11:40:43 skrll 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 .bs_cookie = NULL, 63 64 /* mapping/unmapping */ 65 .bs_map = fcomcons_bs_map, 66 .bs_unmap = fcomcons_bs_unmap, 67 .bs_subregion = fcomcons_bs_subregion, 68 69 /* allocation/deallocation */ 70 .bs_alloc = fcomcons_bs_alloc, 71 .bs_free = fcomcons_bs_free, 72 73 /* get kernel virtual address */ 74 .bs_vaddr = 0, /* never used */ 75 76 /* Mmap bus space for user */ 77 .bs_mmap = bs_notimpl_bs_mmap, 78 79 /* barrier */ 80 .bs_barrier = fcomcons_bs_barrier, 81 82 /* read (single) */ 83 .bs_r_1 = bs_notimpl_bs_r_1, 84 .bs_r_2 = bs_notimpl_bs_r_2, 85 .bs_r_4 = generic_bs_r_4, 86 .bs_r_8 = bs_notimpl_bs_r_8, 87 88 /* read multiple */ 89 .bs_rm_1 = bs_notimpl_bs_rm_1, 90 .bs_rm_2 = bs_notimpl_bs_rm_2, 91 .bs_rm_4 = bs_notimpl_bs_rm_4, 92 .bs_rm_8 = bs_notimpl_bs_rm_8, 93 94 /* read region */ 95 .bs_rr_1 = bs_notimpl_bs_rr_1, 96 .bs_rr_2 = bs_notimpl_bs_rr_2, 97 .bs_rr_4 = bs_notimpl_bs_rr_4, 98 .bs_rr_8 = bs_notimpl_bs_rr_8, 99 100 /* write (single) */ 101 .bs_w_1 = bs_notimpl_bs_w_1, 102 .bs_w_2 = bs_notimpl_bs_w_2, 103 .bs_w_4 = generic_bs_w_4, 104 .bs_w_8 = bs_notimpl_bs_w_8, 105 106 /* write multiple */ 107 .bs_wm_1 = bs_notimpl_bs_wm_1, 108 .bs_wm_2 = bs_notimpl_bs_wm_2, 109 .bs_wm_4 = bs_notimpl_bs_wm_4, 110 .bs_wm_8 = bs_notimpl_bs_wm_8, 111 112 /* write region */ 113 .bs_wr_1 = bs_notimpl_bs_wr_1, 114 .bs_wr_2 = bs_notimpl_bs_wr_2, 115 .bs_wr_4 = bs_notimpl_bs_wr_4, 116 .bs_wr_8 = bs_notimpl_bs_wr_8, 117 118 .bs_sm_1 = bs_notimpl_bs_sm_1, 119 .bs_sm_2 = bs_notimpl_bs_sm_2, 120 .bs_sm_4 = bs_notimpl_bs_sm_4, 121 .bs_sm_8 = bs_notimpl_bs_sm_8, 122 123 /* set region */ 124 .bs_sr_1 = bs_notimpl_bs_sr_1, 125 .bs_sr_2 = bs_notimpl_bs_sr_2, 126 .bs_sr_4 = bs_notimpl_bs_sr_4, 127 .bs_sr_8 = bs_notimpl_bs_sr_8, 128 129 /* copy */ 130 .bs_c_1 = bs_notimpl_bs_c_1, 131 .bs_c_2 = bs_notimpl_bs_c_2, 132 .bs_c_4 = bs_notimpl_bs_c_4, 133 .bs_c_8 = 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 Sun Sep 28 12:09:53 GMT 2025