| 1 | /* This file is part of the program psim. |
| 2 | |
| 3 | Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au> |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 3 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
| 17 | |
| 18 | */ |
| 19 | |
| 20 | |
| 21 | #ifndef _DEVICE_TABLE_C_ |
| 22 | #define _DEVICE_TABLE_C_ |
| 23 | |
| 24 | #include "device_table.h" |
| 25 | |
| 26 | #if HAVE_STDLIB_H |
| 27 | #include <stdlib.h> |
| 28 | #endif |
| 29 | |
| 30 | #include <ctype.h> |
| 31 | |
| 32 | |
| 33 | /* Helper functions */ |
| 34 | |
| 35 | |
| 36 | /* Go through the devices various reg properties for those that |
| 37 | specify attach addresses */ |
| 38 | |
| 39 | |
| 40 | void |
| 41 | generic_device_init_address(device *me) |
| 42 | { |
| 43 | static const char *(reg_property_names[]) = { |
| 44 | "attach-addresses", |
| 45 | "assigned-addresses", |
| 46 | "reg", |
| 47 | "alternate-reg" , |
| 48 | NULL |
| 49 | }; |
| 50 | const char **reg_property_name; |
| 51 | int nr_valid_reg_properties = 0; |
| 52 | for (reg_property_name = reg_property_names; |
| 53 | *reg_property_name != NULL; |
| 54 | reg_property_name++) { |
| 55 | if (device_find_property(me, *reg_property_name) != NULL) { |
| 56 | reg_property_spec reg; |
| 57 | int reg_entry; |
| 58 | for (reg_entry = 0; |
| 59 | device_find_reg_array_property(me, *reg_property_name, reg_entry, |
| 60 | ®); |
| 61 | reg_entry++) { |
| 62 | unsigned_word attach_address; |
| 63 | int attach_space; |
| 64 | unsigned attach_size; |
| 65 | if (!device_address_to_attach_address(device_parent(me), |
| 66 | ®.address, |
| 67 | &attach_space, &attach_address, |
| 68 | me)) |
| 69 | continue; |
| 70 | if (!device_size_to_attach_size(device_parent(me), |
| 71 | ®.size, |
| 72 | &attach_size, me)) |
| 73 | continue; |
| 74 | device_attach_address(device_parent(me), |
| 75 | attach_callback, |
| 76 | attach_space, attach_address, attach_size, |
| 77 | access_read_write_exec, |
| 78 | me); |
| 79 | nr_valid_reg_properties++; |
| 80 | } |
| 81 | /* if first option matches don't try for any others */ |
| 82 | if (reg_property_name == reg_property_names) |
| 83 | break; |
| 84 | } |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | int |
| 89 | generic_device_unit_decode(device *bus, |
| 90 | const char *unit, |
| 91 | device_unit *phys) |
| 92 | { |
| 93 | memset(phys, 0, sizeof(device_unit)); |
| 94 | if (unit == NULL) |
| 95 | return 0; |
| 96 | else { |
| 97 | int nr_cells = 0; |
| 98 | const int max_nr_cells = device_nr_address_cells(bus); |
| 99 | while (1) { |
| 100 | char *end = NULL; |
| 101 | unsigned long val; |
| 102 | val = strtoul(unit, &end, 0); |
| 103 | /* parse error? */ |
| 104 | if (unit == end) |
| 105 | return -1; |
| 106 | /* two many cells? */ |
| 107 | if (nr_cells >= max_nr_cells) |
| 108 | return -1; |
| 109 | /* save it */ |
| 110 | phys->cells[nr_cells] = val; |
| 111 | nr_cells++; |
| 112 | unit = end; |
| 113 | /* more to follow? */ |
| 114 | if (isspace(*unit) || *unit == '\0') |
| 115 | break; |
| 116 | if (*unit != ',') |
| 117 | return -1; |
| 118 | unit++; |
| 119 | } |
| 120 | if (nr_cells < max_nr_cells) { |
| 121 | /* shift everything to correct position */ |
| 122 | int i; |
| 123 | for (i = 1; i <= nr_cells; i++) |
| 124 | phys->cells[max_nr_cells - i] = phys->cells[nr_cells - i]; |
| 125 | for (i = 0; i < (max_nr_cells - nr_cells); i++) |
| 126 | phys->cells[i] = 0; |
| 127 | } |
| 128 | phys->nr_cells = max_nr_cells; |
| 129 | return max_nr_cells; |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | int |
| 134 | generic_device_unit_encode(device *bus, |
| 135 | const device_unit *phys, |
| 136 | char *buf, |
| 137 | int sizeof_buf) |
| 138 | { |
| 139 | int i; |
| 140 | int len; |
| 141 | char *pos = buf; |
| 142 | /* skip leading zero's */ |
| 143 | for (i = 0; i < phys->nr_cells; i++) { |
| 144 | if (phys->cells[i] != 0) |
| 145 | break; |
| 146 | } |
| 147 | /* don't output anything if empty */ |
| 148 | if (phys->nr_cells == 0) { |
| 149 | strcpy(pos, ""); |
| 150 | len = 0; |
| 151 | } |
| 152 | else if (i == phys->nr_cells) { |
| 153 | /* all zero */ |
| 154 | strcpy(pos, "0"); |
| 155 | len = 1; |
| 156 | } |
| 157 | else { |
| 158 | for (; i < phys->nr_cells; i++) { |
| 159 | if (pos != buf) { |
| 160 | strcat(pos, ","); |
| 161 | pos = strchr(pos, '\0'); |
| 162 | } |
| 163 | if (phys->cells[i] < 10) |
| 164 | sprintf(pos, "%ld", (unsigned long)phys->cells[i]); |
| 165 | else |
| 166 | sprintf(pos, "0x%lx", (unsigned long)phys->cells[i]); |
| 167 | pos = strchr(pos, '\0'); |
| 168 | } |
| 169 | len = pos - buf; |
| 170 | } |
| 171 | if (len >= sizeof_buf) |
| 172 | error("generic_unit_encode - buffer overflow\n"); |
| 173 | return len; |
| 174 | } |
| 175 | |
| 176 | int |
| 177 | generic_device_address_to_attach_address(device *me, |
| 178 | const device_unit *address, |
| 179 | int *attach_space, |
| 180 | unsigned_word *attach_address, |
| 181 | device *client) |
| 182 | { |
| 183 | int i; |
| 184 | for (i = 0; i < address->nr_cells - 2; i++) { |
| 185 | if (address->cells[i] != 0) |
| 186 | device_error(me, "Only 32bit addresses supported"); |
| 187 | } |
| 188 | if (address->nr_cells >= 2) |
| 189 | *attach_space = address->cells[address->nr_cells - 2]; |
| 190 | else |
| 191 | *attach_space = 0; |
| 192 | *attach_address = address->cells[address->nr_cells - 1]; |
| 193 | return 1; |
| 194 | } |
| 195 | |
| 196 | int |
| 197 | generic_device_size_to_attach_size(device *me, |
| 198 | const device_unit *size, |
| 199 | unsigned *nr_bytes, |
| 200 | device *client) |
| 201 | { |
| 202 | int i; |
| 203 | for (i = 0; i < size->nr_cells - 1; i++) { |
| 204 | if (size->cells[i] != 0) |
| 205 | device_error(me, "Only 32bit sizes supported"); |
| 206 | } |
| 207 | *nr_bytes = size->cells[0]; |
| 208 | return *nr_bytes; |
| 209 | } |
| 210 | |
| 211 | |
| 212 | /* ignore/passthrough versions of each function */ |
| 213 | |
| 214 | void |
| 215 | passthrough_device_address_attach(device *me, |
| 216 | attach_type attach, |
| 217 | int space, |
| 218 | unsigned_word addr, |
| 219 | unsigned nr_bytes, |
| 220 | access_type access, |
| 221 | device *client) /*callback/default*/ |
| 222 | { |
| 223 | device_attach_address(device_parent(me), attach, |
| 224 | space, addr, nr_bytes, |
| 225 | access, |
| 226 | client); |
| 227 | } |
| 228 | |
| 229 | void |
| 230 | passthrough_device_address_detach(device *me, |
| 231 | attach_type attach, |
| 232 | int space, |
| 233 | unsigned_word addr, |
| 234 | unsigned nr_bytes, |
| 235 | access_type access, |
| 236 | device *client) /*callback/default*/ |
| 237 | { |
| 238 | device_detach_address(device_parent(me), attach, |
| 239 | space, addr, nr_bytes, access, |
| 240 | client); |
| 241 | } |
| 242 | |
| 243 | unsigned |
| 244 | passthrough_device_dma_read_buffer(device *me, |
| 245 | void *dest, |
| 246 | int space, |
| 247 | unsigned_word addr, |
| 248 | unsigned nr_bytes) |
| 249 | { |
| 250 | return device_dma_read_buffer(device_parent(me), dest, |
| 251 | space, addr, nr_bytes); |
| 252 | } |
| 253 | |
| 254 | unsigned |
| 255 | passthrough_device_dma_write_buffer(device *me, |
| 256 | const void *source, |
| 257 | int space, |
| 258 | unsigned_word addr, |
| 259 | unsigned nr_bytes, |
| 260 | int violate_read_only_section) |
| 261 | { |
| 262 | return device_dma_write_buffer(device_parent(me), source, |
| 263 | space, addr, |
| 264 | nr_bytes, |
| 265 | violate_read_only_section); |
| 266 | } |
| 267 | |
| 268 | int |
| 269 | ignore_device_unit_decode(device *me, |
| 270 | const char *unit, |
| 271 | device_unit *phys) |
| 272 | { |
| 273 | memset(phys, 0, sizeof(device_unit)); |
| 274 | return 0; |
| 275 | } |
| 276 | |
| 277 | |
| 278 | static const device_callbacks passthrough_callbacks = { |
| 279 | { NULL, }, /* init */ |
| 280 | { passthrough_device_address_attach, |
| 281 | passthrough_device_address_detach, }, |
| 282 | { NULL, }, /* IO */ |
| 283 | { passthrough_device_dma_read_buffer, passthrough_device_dma_write_buffer, }, |
| 284 | { NULL, }, /* interrupt */ |
| 285 | { generic_device_unit_decode, |
| 286 | generic_device_unit_encode, }, |
| 287 | }; |
| 288 | |
| 289 | |
| 290 | static const device_descriptor ob_device_table[] = { |
| 291 | /* standard OpenBoot devices */ |
| 292 | { "aliases", NULL, &passthrough_callbacks }, |
| 293 | { "options", NULL, &passthrough_callbacks }, |
| 294 | { "chosen", NULL, &passthrough_callbacks }, |
| 295 | { "packages", NULL, &passthrough_callbacks }, |
| 296 | { "cpus", NULL, &passthrough_callbacks }, |
| 297 | { "openprom", NULL, &passthrough_callbacks }, |
| 298 | { "init", NULL, &passthrough_callbacks }, |
| 299 | { NULL }, |
| 300 | }; |
| 301 | |
| 302 | const device_descriptor *const device_table[] = { |
| 303 | ob_device_table, |
| 304 | #include "hw.c" |
| 305 | NULL, |
| 306 | }; |
| 307 | |
| 308 | |
| 309 | #endif /* _DEVICE_TABLE_C_ */ |