sys/arch/arm/omap/omap2_obio.c

   1 /*      $Id: omap2_obio.c,v 1.7 2008/12/12 17:36:14 matt Exp $  */
   2
   3 /* adapted from: */
   4 /*      $NetBSD: omap2_obio.c,v 1.6 2008/11/21 17:13:07 matt Exp $ */
   5
   6
   7 /*
   8  * Autoconfiguration support for the Texas Instruments OMAP "On Board" I/O.
   9  *
  10  * Based on arm/omap/omap_emifs.c which in turn was derived
  11  * Based on arm/xscale/pxa2x0.c which in turn was derived
  12  * from arm/sa11x0/sa11x0.c
  13  *
  14  * Copyright (c) 2002, 2005  Genetec Corporation.  All rights reserved.
  15  * Written by Hiroyuki Bessho for Genetec Corporation.
  16  *
  17  * Redistribution and use in source and binary forms, with or without
  18  * modification, are permitted provided that the following conditions
  19  * are met:
  20  * 1. Redistributions of source code must retain the above copyright
  21  *    notice, this list of conditions and the following disclaimer.
  22  * 2. Redistributions in binary form must reproduce the above copyright
  23  *    notice, this list of conditions and the following disclaimer in the
  24  *    documentation and/or other materials provided with the distribution.
  25  * 3. All advertising materials mentioning features or use of this software
  26  *    must display the following acknowledgement:
  27  *      This product includes software developed for the NetBSD Project by
  28  *      Genetec Corporation.
  29  * 4. The name of Genetec Corporation may not be used to endorse or
  30  *    promote products derived from this software without specific prior
  31  *    written permission.
  32  *
  33  * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
  34  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  35  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  36  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GENETEC CORPORATION
  37  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  38  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  39  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  40  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  41  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  42  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  43  * POSSIBILITY OF SUCH DAMAGE.
  44  *
  45  * Copyright (c) 1997,1998, 2001, The NetBSD Foundation, Inc.
  46  * All rights reserved.
  47  *
  48  * This code is derived from software contributed to The NetBSD Foundation
  49  * by IWAMOTO Toshihiro, Ichiro FUKUHARA and Paul Kranenburg.
  50  *
  51  * Redistribution and use in source and binary forms, with or without
  52  * modification, are permitted provided that the following conditions
  53  * are met:
  54  * 1. Redistributions of source code must retain the above copyright
  55  *    notice, this list of conditions and the following disclaimer.
  56  * 2. Redistributions in binary form must reproduce the above copyright
  57  *    notice, this list of conditions and the following disclaimer in the
  58  *    documentation and/or other materials provided with the distribution.
  59  *
  60  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  61  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  62  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  63  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  64  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  65  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  66  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  67  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  68  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  69  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  70  * POSSIBILITY OF SUCH DAMAGE.
  71  *
  72  * Copyright (c) 1999
  73  *         Shin Takemura and PocketBSD Project. All rights reserved.
  74  *
  75  * Redistribution and use in source and binary forms, with or without
  76  * modification, are permitted provided that the following conditions
  77  * are met:
  78  * 1. Redistributions of source code must retain the above copyright
  79  *    notice, this list of conditions and the following disclaimer.
  80  * 2. Redistributions in binary form must reproduce the above copyright
  81  *    notice, this list of conditions and the following disclaimer in the
  82  *    documentation and/or other materials provided with the distribution.
  83  * 3. All advertising materials mentioning features or use of this software
  84  *    must display the following acknowledgement:
  85  *      This product includes software developed by the PocketBSD project
  86  *      and its contributors.
  87  * 4. Neither the name of the project nor the names of its contributors
  88  *    may be used to endorse or promote products derived from this software
  89  *    without specific prior written permission.
  90  *
  91  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  92  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  93  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  94  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  95  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  96  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  97  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  98  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  99  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 100  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 101  * SUCH DAMAGE.
 102  */
 103
 104 #include "opt_omap.h"
 105 #include <sys/cdefs.h>
 106 __KERNEL_RCSID(0, "$NetBSD: omap2_obio.c,v 1.6 2008/11/21 17:13:07 matt Exp $");
 107
 108 #include "locators.h"
 109 #include "obio.h"
 110
 111 #include <sys/param.h>
 112 #include <sys/systm.h>
 113 #include <sys/device.h>
 114 #include <sys/kernel.h>
 115 #include <sys/reboot.h>
 116
 117 #include <machine/cpu.h>
 118 #include <machine/bus.h>
 119
 120 #include <arm/cpufunc.h>
 121 #include <arm/mainbus/mainbus.h>
 122 #include <arm/omap/omap_var.h>
 123
 124 #include <arm/omap/omap2_obioreg.h>
 125 #include <arm/omap/omap2_obiovar.h>
 126
 127 typedef struct {
 128         boolean_t       cs_valid;
 129         ulong           cs_addr;
 130         ulong           cs_size;
 131 } obio_csconfig_t;
 132
 133 struct obio_softc {
 134         device_t                sc_dev;
 135         bus_dma_tag_t           sc_dmat;
 136         bus_space_tag_t         sc_iot;
 137         bus_space_handle_t      sc_ioh;
 138         bus_addr_t              sc_base;
 139         bus_size_t              sc_size;
 140 };
 141
 142
 143 /* prototypes */
 144 static int      obio_match(device_t, cfdata_t, void *);
 145 static void     obio_attach(device_t, device_t, void *);
 146 static int      obio_search(device_t, cfdata_t, const int *, void *);
 147 static int      obio_find(device_t, cfdata_t, const int *, void *);
 148 static int      obio_print(void *, const char *);
 149 static void     obio_attach_critical(struct obio_softc *);
 150
 151 /* attach structures */
 152 CFATTACH_DECL_NEW(obio, sizeof(struct obio_softc),
 153         obio_match, obio_attach, NULL, NULL);
 154
 155 static uint8_t obio_attached;
 156
 157 static int
 158 obio_match(device_t parent, cfdata_t match, void *aux)
 159 {
 160         struct mainbus_attach_args *mb = aux;
 161
 162 #ifdef OMAP2_OBIO_0_BASE
 163         if (mb->mb_iobase == OMAP2_OBIO_0_BASE
 164             && mb->mb_iosize == OMAP2_OBIO_0_SIZE
 165             && (obio_attached & 1) == 0)
 166                 return 1;
 167 #endif
 168
 169 #ifdef OMAP2_OBIO_1_BASE
 170         if (mb->mb_iobase == OMAP2_OBIO_1_BASE
 171             && mb->mb_iosize == OMAP2_OBIO_1_SIZE
 172             && (obio_attached & 2) == 0)
 173                 return 1;
 174 #endif
 175
 176 #ifdef OMAP2_OBIO_2_BASE
 177         if (mb->mb_iobase == OMAP2_OBIO_2_BASE
 178             && mb->mb_iosize == OMAP2_OBIO_2_SIZE
 179             && (obio_attached & 4) == 0)
 180                 return 1;
 181 #endif
 182
 183 #ifdef OMAP2_OBIO_3_BASE
 184         if (mb->mb_iobase == OMAP2_OBIO_3_BASE
 185             && mb->mb_iosize == OMAP2_OBIO_3_SIZE
 186             && (obio_attached & 8) == 0)
 187                 return 1;
 188 #endif
 189
 190         return 0;
 191 }
 192
 193 static void
 194 obio_attach(device_t parent, device_t self, void *aux)
 195 {
 196         struct obio_softc *sc = device_private(self);
 197         struct mainbus_attach_args *mb = (struct mainbus_attach_args *)aux;
 198
 199         sc->sc_dev = self;
 200         sc->sc_iot = &omap_bs_tag;
 201
 202         aprint_normal(": On-Board IO\n");
 203
 204         sc->sc_ioh = 0;
 205 #ifdef NOTYET
 206         sc->sc_dmat = &omap_bus_dma_tag;
 207 #endif
 208         sc->sc_base = mb->mb_iobase;
 209         sc->sc_size = mb->mb_iosize;
 210
 211 #ifdef OMAP2_OBIO_0_BASE
 212         if (mb->mb_iobase == OMAP2_OBIO_0_BASE)
 213                 obio_attached |= 1;
 214 #endif
 215 #ifdef OMAP2_OBIO_1_BASE
 216         else if (mb->mb_iobase == OMAP2_OBIO_1_BASE)
 217                 obio_attached |= 2;
 218 #endif
 219 #ifdef OMAP2_OBIO_2_BASE
 220         else if (mb->mb_iobase == OMAP2_OBIO_2_BASE)
 221                 obio_attached |= 4;
 222 #endif
 223 #ifdef OMAP2_OBIO_3_BASE
 224         else if (mb->mb_iobase == OMAP2_OBIO_3_BASE)
 225                 obio_attached |= 8;
 226 #endif
 227
 228         /*
 229          * Attach critical devices first.
 230          */
 231         obio_attach_critical(sc);
 232         /*
 233          * Then attach the rest of our devices
 234          */
 235         config_search_ia(obio_search, self, "obio", NULL);
 236 }
 237
 238 static int
 239 obio_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
 240 {
 241         struct obio_softc * const sc = device_private(parent);
 242         struct obio_attach_args oa;
 243
 244         /* Set up the attach args. */
 245         if (cf->cf_loc[OBIOCF_NOBYTEACC] == 1) {
 246                 if (cf->cf_loc[OBIOCF_MULT] == 1)
 247                         oa.obio_iot = &nobyteacc_bs_tag;
 248                 else
 249                         panic("nobyteacc specified for device with "
 250                                 "non-byte multiplier\n");
 251         } else {
 252                 switch (cf->cf_loc[OBIOCF_MULT]) {
 253                 case 1:
 254                         oa.obio_iot = &omap_bs_tag;
 255                         break;
 256                 case 2:
 257                         oa.obio_iot = &omap_a2x_bs_tag;
 258                         break;
 259                 case 4:
 260                         oa.obio_iot = &omap_a4x_bs_tag;
 261                         break;
 262                 default:
 263                         panic("Unsupported EMIFS multiplier.");
 264                         break;
 265                 }
 266         }
 267
 268         oa.obio_dmat = sc->sc_dmat;
 269         oa.obio_addr = cf->cf_loc[OBIOCF_ADDR];
 270         oa.obio_size = cf->cf_loc[OBIOCF_SIZE];
 271         oa.obio_intr = cf->cf_loc[OBIOCF_INTR];
 272         oa.obio_intrbase = cf->cf_loc[OBIOCF_INTRBASE];
 273
 274 #if defined(OMAP2)
 275         if ((oa.obio_addr >= sc->sc_base)
 276         &&  (oa.obio_addr < (sc->sc_base + sc->sc_size))) {
 277                 /* XXX
 278                  * if size was specified, then check it too
 279                  * otherwise just assume it is OK
 280                  */
 281                 if ((oa.obio_size != OBIOCF_SIZE_DEFAULT)
 282                 &&  ((oa.obio_addr + oa.obio_size)
 283                         >= (sc->sc_base + sc->sc_size)))
 284                                 return 1;               /* NG */
 285                 if (config_match(parent, cf, &oa)) {
 286                         config_attach(parent, cf, &oa, obio_print);
 287                         return 0;                       /* love it */
 288                 }
 289         }
 290 #endif
 291
 292         return UNCONF;  /* NG */
 293 }
 294
 295 static int
 296 obio_find(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
 297 {
 298         struct obio_attach_args * const oa = aux;
 299
 300         if (oa->obio_addr != OBIOCF_ADDR_DEFAULT
 301             && oa->obio_addr != cf->cf_loc[OBIOCF_ADDR])
 302                 return 0;
 303         if (oa->obio_size != OBIOCF_SIZE_DEFAULT
 304             && oa->obio_size != cf->cf_loc[OBIOCF_SIZE])
 305                 return 0;
 306         if (oa->obio_intr != OBIOCF_INTR_DEFAULT
 307             && oa->obio_intr != cf->cf_loc[OBIOCF_INTR])
 308                 return 0;
 309         if (oa->obio_intrbase != OBIOCF_INTRBASE_DEFAULT
 310             && oa->obio_intrbase != cf->cf_loc[OBIOCF_INTRBASE])
 311                 return 0;
 312
 313         /* Set up the attach args. */
 314         if (cf->cf_loc[OBIOCF_NOBYTEACC] == 1) {
 315                 if (cf->cf_loc[OBIOCF_MULT] == 1)
 316                         oa->obio_iot = &nobyteacc_bs_tag;
 317                 else
 318                         panic("nobyteacc specified for device with "
 319                                 "non-byte multiplier\n");
 320         } else {
 321                 switch (cf->cf_loc[OBIOCF_MULT]) {
 322                 case 1:
 323                         oa->obio_iot = &omap_bs_tag;
 324                         break;
 325                 case 2:
 326                         oa->obio_iot = &omap_a2x_bs_tag;
 327                         break;
 328                 case 4:
 329                         oa->obio_iot = &omap_a4x_bs_tag;
 330                         break;
 331                 default:
 332                         panic("Unsupported EMIFS multiplier.");
 333                         break;
 334                 }
 335         }
 336         oa->obio_addr = cf->cf_loc[OBIOCF_ADDR];
 337         oa->obio_size = cf->cf_loc[OBIOCF_SIZE];
 338         oa->obio_intr = cf->cf_loc[OBIOCF_INTR];
 339         oa->obio_intrbase = cf->cf_loc[OBIOCF_INTRBASE];
 340
 341         return config_match(parent, cf, oa);
 342 }
 343
 344 #if 0 && NOMAP2ICU == 0
 345 #error no avic present in config file
 346 #endif
 347
 348 static const struct {
 349         const char *name;
 350         bus_addr_t addr;
 351         bool required;
 352 } critical_devs[] = {
 353         { .name = "avic", .addr = INTC_BASE, .required = true },
 354         { .name = "gpio1", .addr = GPIO1_BASE, .required = false },
 355         { .name = "gpio2", .addr = GPIO2_BASE, .required = false },
 356         { .name = "gpio3", .addr = GPIO3_BASE, .required = false },
 357 #if 0
 358         { .name = "dmac", .addr = DMAC_BASE, .required = true },
 359 #endif
 360 };
 361
 362 static void
 363 obio_attach_critical(struct obio_softc *sc)
 364 {
 365         struct obio_attach_args oa;
 366         cfdata_t cf;
 367         size_t i;
 368
 369         for (i = 0; i < __arraycount(critical_devs); i++) {
 370                 oa.obio_iot = sc->sc_iot;
 371 #ifdef NOTYET
 372                 oa.obio_dmat = sc->sc_dmat;
 373 #endif
 374
 375                 oa.obio_addr = critical_devs[i].addr;
 376                 oa.obio_size = OBIOCF_SIZE_DEFAULT;
 377                 oa.obio_intr = OBIOCF_INTR_DEFAULT;
 378                 oa.obio_intrbase = OBIOCF_INTRBASE_DEFAULT;
 379
 380                 if (oa.obio_addr != OBIOCF_ADDR_DEFAULT
 381                     && (oa.obio_addr < sc->sc_base
 382                         || oa.obio_addr >= sc->sc_base + sc->sc_size))
 383                         continue;
 384
 385                 cf = config_search_ia(obio_find, sc->sc_dev, "obio", &oa);
 386                 if (cf == NULL) {
 387                         if (critical_devs[i].required)
 388                                 panic("obio_attach_critical: failed to find %s!",
 389                                     critical_devs[i].name);
 390                         continue;
 391                 }
 392
 393                 oa.obio_addr = cf->cf_loc[OBIOCF_ADDR];
 394                 oa.obio_size = cf->cf_loc[OBIOCF_SIZE];
 395                 oa.obio_intr = cf->cf_loc[OBIOCF_INTR];
 396                 oa.obio_intrbase = cf->cf_loc[OBIOCF_INTRBASE];
 397                 config_attach(sc->sc_dev, cf, &oa, obio_print);
 398         }
 399 }
 400
 401 static int
 402 obio_print(void *aux, const char *name)
 403 {
 404         struct obio_attach_args *oa = (struct obio_attach_args*)aux;
 405
 406         if (oa->obio_addr != OBIOCF_ADDR_DEFAULT) {
 407                 aprint_normal(" addr 0x%08lx", oa->obio_addr);
 408                 if (oa->obio_size != OBIOCF_SIZE_DEFAULT)
 409                         aprint_normal("-0x%08lx",
 410                                 oa->obio_addr + oa->obio_size-1);
 411         }
 412         if (oa->obio_intr != OBIOCF_INTR_DEFAULT)
 413                 aprint_normal(" intr %d", oa->obio_intr);
 414         if (oa->obio_intrbase != OBIOCF_INTRBASE_DEFAULT)
 415                 aprint_normal(" intrbase %d", oa->obio_intrbase);
 416
 417         return UNCONF;
 418 }