com_hpcio.c revision 1.6
1 /* $NetBSD: com_hpcio.c,v 1.6 2003/06/14 17:01:12 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 TAKEMRUA Shin. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the project nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 31 32 #include "opt_kgdb.h" 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/device.h> 37 #include <sys/reboot.h> 38 #include <sys/termios.h> 39 40 #include <machine/intr.h> 41 #include <machine/bus.h> 42 #include <machine/platid.h> 43 #include <machine/platid_mask.h> 44 45 #include <hpcmips/dev/com_hpciovar.h> 46 47 #include <dev/hpc/hpciovar.h> 48 #include <dev/ic/comvar.h> 49 #include <dev/ic/comreg.h> 50 51 #include "locators.h" 52 53 #define COM_HPCIODEBUG 54 #ifdef COM_HPCIODEBUG 55 int com_hpcio_debug = 0; 56 #define DPRINTF(arg...) do { if (com_hpcio_debug) printf(arg); } while (0) 57 #else 58 #define DPRINTF(arg...) do {} while (0) 59 #endif 60 61 #define COM_HPCIO_BYTE_ALIGNMENT 0 62 #define COM_HPCIO_HALFWORD_ALIGNMENT 1 63 64 struct com_hpcio_softc { 65 struct com_softc hsc_com; 66 struct bus_space_tag hsc_iot; 67 struct hpcio_chip *hsc_hc; 68 }; 69 static struct bus_space_tag com_hpcio_cniotx; 70 static bus_space_tag_t com_hpcio_cniot = &com_hpcio_cniotx; 71 static int com_hpcio_cniobase; 72 73 static int com_hpcio_probe(struct device *, struct cfdata *, void *); 74 static void com_hpcio_attach(struct device *, struct device *, void *); 75 static int com_hpcio_common_probe(bus_space_tag_t, int, int *); 76 void com_hpcio_iot_init(bus_space_tag_t iot, bus_space_tag_t base); 77 bus_space_protos(bs_notimpl); 78 bus_space_protos(bs_through); 79 bus_space_protos(com_hpcio); 80 81 CFATTACH_DECL(com_hpcio, sizeof(struct com_hpcio_softc), 82 com_hpcio_probe, com_hpcio_attach, NULL, NULL); 83 84 struct bus_space_ops com_hpcio_bs_ops = { 85 /* mapping/unmapping */ 86 bs_through_bs_map, 87 bs_through_bs_unmap, 88 bs_through_bs_subregion, 89 90 /* allocation/deallocation */ 91 bs_through_bs_alloc, 92 bs_through_bs_free, 93 94 /* get kernel virtual address */ 95 bs_through_bs_vaddr, /* there is no linear mapping */ 96 97 /* Mmap bus space for user */ 98 bs_through_bs_mmap, 99 100 /* barrier */ 101 bs_through_bs_barrier, 102 103 /* probe */ 104 bs_through_bs_peek, 105 bs_through_bs_poke, 106 107 /* read (single) */ 108 com_hpcio_bs_r_1, 109 bs_notimpl_bs_r_2, 110 bs_notimpl_bs_r_4, 111 bs_notimpl_bs_r_8, 112 113 /* read multiple */ 114 bs_notimpl_bs_rm_1, 115 bs_notimpl_bs_rm_2, 116 bs_notimpl_bs_rm_4, 117 bs_notimpl_bs_rm_8, 118 119 /* read region */ 120 bs_notimpl_bs_rr_1, 121 bs_notimpl_bs_rr_2, 122 bs_notimpl_bs_rr_4, 123 bs_notimpl_bs_rr_8, 124 125 /* write (single) */ 126 com_hpcio_bs_w_1, 127 bs_notimpl_bs_w_2, 128 bs_notimpl_bs_w_4, 129 bs_notimpl_bs_w_8, 130 131 /* write multiple */ 132 com_hpcio_bs_wm_1, 133 bs_notimpl_bs_wm_2, 134 bs_notimpl_bs_wm_4, 135 bs_notimpl_bs_wm_8, 136 137 /* write region */ 138 bs_notimpl_bs_wr_1, 139 bs_notimpl_bs_wr_2, 140 bs_notimpl_bs_wr_4, 141 bs_notimpl_bs_wr_8, 142 143 #ifdef BUS_SPACE_HAS_REAL_STREAM_METHODS 144 /* read stream (single) */ 145 bs_notimpl_bs_rs_1, 146 bs_notimpl_bs_rs_2, 147 bs_notimpl_bs_rs_4, 148 bs_notimpl_bs_rs_8, 149 150 /* read multiple stream */ 151 bs_notimpl_bs_rms_1, 152 bs_notimpl_bs_rms_2, 153 bs_notimpl_bs_rms_4, 154 bs_notimpl_bs_rms_8, 155 156 /* read region stream */ 157 bs_notimpl_bs_rrs_1, 158 bs_notimpl_bs_rrs_2, 159 bs_notimpl_bs_rrs_4, 160 bs_notimpl_bs_rrs_8, 161 162 /* write stream (single) */ 163 bs_notimpl_bs_ws_1, 164 bs_notimpl_bs_ws_2, 165 bs_notimpl_bs_ws_4, 166 bs_notimpl_bs_ws_8, 167 168 /* write multiple stream */ 169 bs_notimpl_bs_wms_1, 170 bs_notimpl_bs_wms_2, 171 bs_notimpl_bs_wms_4, 172 bs_notimpl_bs_wms_8, 173 174 /* write region stream */ 175 bs_notimpl_bs_wrs_1, 176 bs_notimpl_bs_wrs_2, 177 bs_notimpl_bs_wrs_4, 178 bs_notimpl_bs_wrs_8, 179 #endif /* BUS_SPACE_HAS_REAL_STREAM_METHODS */ 180 181 /* set multi */ 182 bs_notimpl_bs_sm_1, 183 bs_notimpl_bs_sm_2, 184 bs_notimpl_bs_sm_4, 185 bs_notimpl_bs_sm_8, 186 187 /* set region */ 188 bs_notimpl_bs_sr_1, 189 bs_notimpl_bs_sr_2, 190 bs_notimpl_bs_sr_4, 191 bs_notimpl_bs_sr_8, 192 193 /* copy */ 194 bs_notimpl_bs_c_1, 195 bs_notimpl_bs_c_2, 196 bs_notimpl_bs_c_4, 197 bs_notimpl_bs_c_8, 198 }; 199 200 int 201 com_hpcio_cndb_attach(bus_space_tag_t iot, int iobase, int rate, 202 int frequency, tcflag_t cflag, int kgdb) 203 { 204 int alignment; 205 206 DPRINTF("com_hpcio_cndb_attach()\n"); 207 if (!com_hpcio_common_probe(iot, iobase, &alignment)) { 208 DPRINTF("com_hpcio_cndb_attach(): probe failed\n"); 209 return (ENOTTY); 210 } 211 if (alignment == COM_HPCIO_HALFWORD_ALIGNMENT) { 212 DPRINTF("com_hpcio_cndb_attach(): half word aligned\n"); 213 com_hpcio_iot_init(&com_hpcio_cniotx, iot); 214 com_hpcio_cniot = &com_hpcio_cniotx; 215 } else { 216 com_hpcio_cniot = iot; 217 } 218 com_hpcio_cniobase = iobase; 219 DPRINTF("com_hpcio_cndb_attach(): probe succeeded\n"); 220 #ifdef KGDB 221 if (kgdb) 222 return (com_kgdb_attach(com_hpcio_cniot, iobase, rate, 223 frequency, COM_TYPE_NORMAL, cflag)); 224 else 225 #endif 226 return (comcnattach(com_hpcio_cniot, iobase, rate, 227 frequency, COM_TYPE_NORMAL, cflag)); 228 } 229 230 static int 231 com_hpcio_common_probe(bus_space_tag_t iot, int iobase, int *alignment) 232 { 233 bus_space_handle_t ioh; 234 static struct bus_space_tag tmpiot; 235 int rv; 236 237 /* 238 * try byte aligned register 239 */ 240 *alignment = COM_HPCIO_BYTE_ALIGNMENT; 241 if (bus_space_map(iot, iobase, 1, 0, &ioh)) 242 return 0; 243 rv = comprobe1(iot, ioh); 244 bus_space_unmap(iot, ioh, 1); 245 246 if (rv != 0) 247 return (rv); 248 249 /* 250 * try half word aligned register 251 */ 252 *alignment = COM_HPCIO_HALFWORD_ALIGNMENT; 253 com_hpcio_iot_init(&tmpiot, iot); 254 if (bus_space_map(&tmpiot, iobase, 1, 0, &ioh)) 255 return 0; 256 rv = comprobe1(&tmpiot, ioh); 257 bus_space_unmap(&tmpiot, ioh, 1); 258 259 return (rv); 260 } 261 262 static int 263 com_hpcio_probe(struct device *parent, struct cfdata *cf, void *aux) 264 { 265 struct hpcio_attach_args *haa = aux; 266 bus_space_tag_t iot = haa->haa_iot; 267 int addr, alignment; 268 269 if (cf->cf_loc[HPCIOIFCF_PLATFORM] != HPCIOIFCF_PLATFORM_DEFAULT) { 270 platid_mask_t mask; 271 272 mask = PLATID_DEREF(cf->cf_loc[HPCIOIFCF_PLATFORM]); 273 if (!platid_match(&platid, &mask)) 274 return (0); /* platform id didn't match */ 275 } 276 277 if ((addr = cf->cf_loc[HPCIOIFCF_ADDR]) == HPCIOIFCF_ADDR_DEFAULT) 278 return (0); /* address wasn't specified */ 279 280 return com_hpcio_common_probe(iot, addr, &alignment); 281 } 282 283 284 static void 285 com_hpcio_attach(struct device *parent, struct device *self, void *aux) 286 { 287 struct com_hpcio_softc *hsc = (void *)self; 288 struct com_softc *sc = &hsc->hsc_com; 289 struct hpcio_attach_args *haa = aux; 290 bus_space_tag_t iot; 291 bus_space_handle_t ioh; 292 int addr, port, mode, alignment, *loc; 293 294 loc = sc->sc_dev.dv_cfdata->cf_loc; 295 addr = loc[HPCIOIFCF_ADDR]; 296 printf(" addr %x", addr); 297 if ((com_hpcio_cniot == haa->haa_iot || 298 com_hpcio_cniot->bs_base == haa->haa_iot) && 299 com_hpcio_cniobase == addr && 300 com_is_console(com_hpcio_cniot, addr, 0)) { 301 iot = com_hpcio_cniot; 302 if (com_hpcio_cniot->bs_base == haa->haa_iot) 303 printf(", half word aligned"); 304 } else { 305 com_hpcio_common_probe(haa->haa_iot, addr, &alignment); 306 if (alignment == COM_HPCIO_HALFWORD_ALIGNMENT) { 307 printf(", half word aligned"); 308 iot = &hsc->hsc_iot; 309 com_hpcio_iot_init(iot, haa->haa_iot); 310 } else { 311 iot = haa->haa_iot; 312 } 313 } 314 if (bus_space_map(iot, addr, 1, 0, &ioh)) { 315 printf(": can't map bus space\n"); 316 return; 317 } 318 sc->sc_iobase = addr; 319 sc->sc_iot = iot; 320 sc->sc_ioh = ioh; 321 322 sc->enable = NULL; 323 sc->disable = NULL; 324 325 sc->sc_frequency = COM_FREQ; 326 com_attach_subr(sc); 327 328 hsc->hsc_hc = (*haa->haa_getchip)(haa->haa_sc, loc[HPCIOIFCF_IOCHIP]); 329 port = loc[HPCIOIFCF_PORT]; 330 mode = HPCIO_INTR_LEVEL | HPCIO_INTR_HIGH; 331 hpcio_intr_establish(hsc->hsc_hc, port, mode, comintr, sc); 332 } 333 334 /* 335 * bus stuff (registershalf word aligned) 336 */ 337 void 338 com_hpcio_iot_init(bus_space_tag_t iot, bus_space_tag_t base) 339 { 340 341 iot->bs_base = base; 342 iot->bs_ops = com_hpcio_bs_ops; /* structure assignment */ 343 iot->bs_ops.bs_r_1 = com_hpcio_bs_r_1; 344 iot->bs_ops.bs_w_1 = com_hpcio_bs_w_1; 345 iot->bs_ops.bs_wm_1 = com_hpcio_bs_wm_1; 346 } 347 348 u_int8_t 349 com_hpcio_bs_r_1(bus_space_tag_t t, bus_space_handle_t bsh, 350 bus_size_t offset) 351 { 352 return bus_space_read_1(t->bs_base, bsh, offset * 2); 353 } 354 355 void 356 com_hpcio_bs_w_1(bus_space_tag_t t, bus_space_handle_t bsh, 357 bus_size_t offset, u_int8_t value) 358 { 359 bus_space_write_1(t->bs_base, bsh, offset * 2, value); 360 } 361 362 void 363 com_hpcio_bs_wm_1(bus_space_tag_t t, bus_space_handle_t bsh, 364 bus_size_t offset, const u_int8_t *addr, bus_size_t count) 365 { 366 bus_space_write_multi_1(t->bs_base, bsh, offset * 2, addr, count); 367 } 368
Indexes created Tue Sep 30 17:09:57 GMT 2025