1 /* $NetBSD: iomd_io.c,v 1.1 2001/10/05 22:27:41 reinoud 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/param.h> 41 #include <sys/systm.h> 42 #include <machine/bus.h> 43 44 /* Proto types for all the bus_space structure functions */ 45 46 bs_protos(iomd); 47 bs_protos(bs_notimpl); 48 49 /* Declare the iomd bus space tag */ 50 51 struct bus_space iomd_bs_tag = { 52 /* cookie */ 53 NULL, 54 55 /* mapping/unmapping */ 56 iomd_bs_map, 57 iomd_bs_unmap, 58 iomd_bs_subregion, 59 60 /* allocation/deallocation */ 61 iomd_bs_alloc, 62 iomd_bs_free, 63 64 /* get kernel virtual address */ 65 0, /* there is no linear mapping */ 66 67 /* mmap bus space for userland */ 68 bs_notimpl_bs_mmap, /* XXX correct? XXX */ 69 70 /* barrier */ 71 iomd_bs_barrier, 72 73 /* read (single) */ 74 iomd_bs_r_1, 75 iomd_bs_r_2, 76 iomd_bs_r_4, 77 bs_notimpl_bs_r_8, 78 79 /* read multiple */ 80 bs_notimpl_bs_rm_1, 81 iomd_bs_rm_2, 82 bs_notimpl_bs_rm_4, 83 bs_notimpl_bs_rm_8, 84 85 /* read region */ 86 bs_notimpl_bs_rr_1, 87 bs_notimpl_bs_rr_2, 88 bs_notimpl_bs_rr_4, 89 bs_notimpl_bs_rr_8, 90 91 /* write (single) */ 92 iomd_bs_w_1, 93 iomd_bs_w_2, 94 iomd_bs_w_4, 95 bs_notimpl_bs_w_8, 96 97 /* write multiple */ 98 bs_notimpl_bs_wm_1, 99 iomd_bs_wm_2, 100 bs_notimpl_bs_wm_4, 101 bs_notimpl_bs_wm_8, 102 103 /* write region */ 104 bs_notimpl_bs_wr_1, 105 bs_notimpl_bs_wr_2, 106 bs_notimpl_bs_wr_4, 107 bs_notimpl_bs_wr_8, 108 109 /* set multiple */ 110 bs_notimpl_bs_sm_1, 111 bs_notimpl_bs_sm_2, 112 bs_notimpl_bs_sm_4, 113 bs_notimpl_bs_sm_8, 114 115 /* set region */ 116 bs_notimpl_bs_sr_1, 117 bs_notimpl_bs_sr_2, 118 bs_notimpl_bs_sr_4, 119 bs_notimpl_bs_sr_8, 120 121 /* copy */ 122 bs_notimpl_bs_c_1, 123 bs_notimpl_bs_c_2, 124 bs_notimpl_bs_c_4, 125 bs_notimpl_bs_c_8, 126 }; 127 128 /* bus space functions */ 129 130 int 131 iomd_bs_map(t, bpa, size, cacheable, bshp) 132 void *t; 133 bus_addr_t bpa; 134 bus_size_t size; 135 int cacheable; 136 bus_space_handle_t *bshp; 137 { 138 /* 139 * Temporary implementation as all I/O is already mapped etc. 140 * 141 * Eventually this function will do the mapping check for multiple maps 142 */ 143 *bshp = bpa; 144 return(0); 145 } 146 147 int 148 iomd_bs_alloc(t, rstart, rend, size, alignment, boundary, cacheable, 149 bpap, bshp) 150 void *t; 151 bus_addr_t rstart, rend; 152 bus_size_t size, alignment, boundary; 153 int cacheable; 154 bus_addr_t *bpap; 155 bus_space_handle_t *bshp; 156 { 157 panic("iomd_alloc(): Help!\n"); 158 } 159 160 161 void 162 iomd_bs_unmap(t, bsh, size) 163 void *t; 164 bus_space_handle_t bsh; 165 bus_size_t size; 166 { 167 /* 168 * Temporary implementation 169 */ 170 } 171 172 void 173 iomd_bs_free(t, bsh, size) 174 void *t; 175 bus_space_handle_t bsh; 176 bus_size_t size; 177 { 178 179 panic("iomd_free(): Help!\n"); 180 /* iomd_unmap() does all that we need to do. */ 181 /* iomd_unmap(t, bsh, size);*/ 182 } 183 184 int 185 iomd_bs_subregion(t, bsh, offset, size, nbshp) 186 void *t; 187 bus_space_handle_t bsh; 188 bus_size_t offset, size; 189 bus_space_handle_t *nbshp; 190 { 191 192 *nbshp = bsh + (offset << 2); 193 return (0); 194 } 195 196 void 197 iomd_bs_barrier(t, bsh, offset, len, flags) 198 void *t; 199 bus_space_handle_t bsh; 200 bus_size_t offset, len; 201 int flags; 202 { 203 } 204 205 /* End of iomd_io.c */ 206