sys/platform/pc32/apic/ioapic_abi.c

   1 /*
   2  * Copyright (c) 2005 The DragonFly Project.  All rights reserved.
   3  * Copyright (c) 1996, by Steve Passe.  All rights reserved.
   4  * Copyright (c) 1991 The Regents of the University of California.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The DragonFly Project
   8  * by Matthew Dillon <dillon@backplane.com>
   9  *
  10  * This code is derived from software contributed to Berkeley by
  11  * William Jolitz.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  *
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  * 2. Redistributions in binary form must reproduce the above copyright
  20  *    notice, this list of conditions and the following disclaimer in
  21  *    the documentation and/or other materials provided with the
  22  *    distribution.
  23  * 3. Neither the name of The DragonFly Project nor the names of its
  24  *    contributors may be used to endorse or promote products derived
  25  *    from this software without specific, prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  29  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  30  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  31  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  32  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  33  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  34  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  35  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  36  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  37  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  38  * SUCH DAMAGE.
  39  *
  40  * $DragonFly: src/sys/platform/pc32/apic/apic_abi.c,v 1.12 2007/04/30 16:45:55 dillon Exp $
  41  */
  42
  43 #include <sys/param.h>
  44 #include <sys/systm.h>
  45 #include <sys/kernel.h>
  46 #include <sys/machintr.h>
  47 #include <sys/interrupt.h>
  48 #include <sys/bus.h>
  49
  50 #include <machine/smp.h>
  51 #include <machine/segments.h>
  52 #include <machine/md_var.h>
  53 #include <machine/intr_machdep.h>
  54 #include <machine_base/icu/icu.h>
  55 #include <machine/globaldata.h>
  56
  57 #include <sys/thread2.h>
  58
  59 #include <machine_base/icu/icu_var.h>
  60 #include <machine_base/apic/ioapic_abi.h>
  61 #include <machine_base/apic/ioapic_ipl.h>
  62
  63 #ifdef SMP /* APIC-IO */
  64
  65 extern inthand_t
  66         IDTVEC(ioapic_intr0),
  67         IDTVEC(ioapic_intr1),
  68         IDTVEC(ioapic_intr2),
  69         IDTVEC(ioapic_intr3),
  70         IDTVEC(ioapic_intr4),
  71         IDTVEC(ioapic_intr5),
  72         IDTVEC(ioapic_intr6),
  73         IDTVEC(ioapic_intr7),
  74         IDTVEC(ioapic_intr8),
  75         IDTVEC(ioapic_intr9),
  76         IDTVEC(ioapic_intr10),
  77         IDTVEC(ioapic_intr11),
  78         IDTVEC(ioapic_intr12),
  79         IDTVEC(ioapic_intr13),
  80         IDTVEC(ioapic_intr14),
  81         IDTVEC(ioapic_intr15),
  82         IDTVEC(ioapic_intr16),
  83         IDTVEC(ioapic_intr17),
  84         IDTVEC(ioapic_intr18),
  85         IDTVEC(ioapic_intr19),
  86         IDTVEC(ioapic_intr20),
  87         IDTVEC(ioapic_intr21),
  88         IDTVEC(ioapic_intr22),
  89         IDTVEC(ioapic_intr23),
  90         IDTVEC(ioapic_intr24),
  91         IDTVEC(ioapic_intr25),
  92         IDTVEC(ioapic_intr26),
  93         IDTVEC(ioapic_intr27),
  94         IDTVEC(ioapic_intr28),
  95         IDTVEC(ioapic_intr29),
  96         IDTVEC(ioapic_intr30),
  97         IDTVEC(ioapic_intr31),
  98         IDTVEC(ioapic_intr32),
  99         IDTVEC(ioapic_intr33),
 100         IDTVEC(ioapic_intr34),
 101         IDTVEC(ioapic_intr35),
 102         IDTVEC(ioapic_intr36),
 103         IDTVEC(ioapic_intr37),
 104         IDTVEC(ioapic_intr38),
 105         IDTVEC(ioapic_intr39),
 106         IDTVEC(ioapic_intr40),
 107         IDTVEC(ioapic_intr41),
 108         IDTVEC(ioapic_intr42),
 109         IDTVEC(ioapic_intr43),
 110         IDTVEC(ioapic_intr44),
 111         IDTVEC(ioapic_intr45),
 112         IDTVEC(ioapic_intr46),
 113         IDTVEC(ioapic_intr47),
 114         IDTVEC(ioapic_intr48),
 115         IDTVEC(ioapic_intr49),
 116         IDTVEC(ioapic_intr50),
 117         IDTVEC(ioapic_intr51),
 118         IDTVEC(ioapic_intr52),
 119         IDTVEC(ioapic_intr53),
 120         IDTVEC(ioapic_intr54),
 121         IDTVEC(ioapic_intr55),
 122         IDTVEC(ioapic_intr56),
 123         IDTVEC(ioapic_intr57),
 124         IDTVEC(ioapic_intr58),
 125         IDTVEC(ioapic_intr59),
 126         IDTVEC(ioapic_intr60),
 127         IDTVEC(ioapic_intr61),
 128         IDTVEC(ioapic_intr62),
 129         IDTVEC(ioapic_intr63),
 130         IDTVEC(ioapic_intr64),
 131         IDTVEC(ioapic_intr65),
 132         IDTVEC(ioapic_intr66),
 133         IDTVEC(ioapic_intr67),
 134         IDTVEC(ioapic_intr68),
 135         IDTVEC(ioapic_intr69),
 136         IDTVEC(ioapic_intr70),
 137         IDTVEC(ioapic_intr71),
 138         IDTVEC(ioapic_intr72),
 139         IDTVEC(ioapic_intr73),
 140         IDTVEC(ioapic_intr74),
 141         IDTVEC(ioapic_intr75),
 142         IDTVEC(ioapic_intr76),
 143         IDTVEC(ioapic_intr77),
 144         IDTVEC(ioapic_intr78),
 145         IDTVEC(ioapic_intr79),
 146         IDTVEC(ioapic_intr80),
 147         IDTVEC(ioapic_intr81),
 148         IDTVEC(ioapic_intr82),
 149         IDTVEC(ioapic_intr83),
 150         IDTVEC(ioapic_intr84),
 151         IDTVEC(ioapic_intr85),
 152         IDTVEC(ioapic_intr86),
 153         IDTVEC(ioapic_intr87),
 154         IDTVEC(ioapic_intr88),
 155         IDTVEC(ioapic_intr89),
 156         IDTVEC(ioapic_intr90),
 157         IDTVEC(ioapic_intr91),
 158         IDTVEC(ioapic_intr92),
 159         IDTVEC(ioapic_intr93),
 160         IDTVEC(ioapic_intr94),
 161         IDTVEC(ioapic_intr95),
 162         IDTVEC(ioapic_intr96),
 163         IDTVEC(ioapic_intr97),
 164         IDTVEC(ioapic_intr98),
 165         IDTVEC(ioapic_intr99),
 166         IDTVEC(ioapic_intr100),
 167         IDTVEC(ioapic_intr101),
 168         IDTVEC(ioapic_intr102),
 169         IDTVEC(ioapic_intr103),
 170         IDTVEC(ioapic_intr104),
 171         IDTVEC(ioapic_intr105),
 172         IDTVEC(ioapic_intr106),
 173         IDTVEC(ioapic_intr107),
 174         IDTVEC(ioapic_intr108),
 175         IDTVEC(ioapic_intr109),
 176         IDTVEC(ioapic_intr110),
 177         IDTVEC(ioapic_intr111),
 178         IDTVEC(ioapic_intr112),
 179         IDTVEC(ioapic_intr113),
 180         IDTVEC(ioapic_intr114),
 181         IDTVEC(ioapic_intr115),
 182         IDTVEC(ioapic_intr116),
 183         IDTVEC(ioapic_intr117),
 184         IDTVEC(ioapic_intr118),
 185         IDTVEC(ioapic_intr119),
 186         IDTVEC(ioapic_intr120),
 187         IDTVEC(ioapic_intr121),
 188         IDTVEC(ioapic_intr122),
 189         IDTVEC(ioapic_intr123),
 190         IDTVEC(ioapic_intr124),
 191         IDTVEC(ioapic_intr125),
 192         IDTVEC(ioapic_intr126),
 193         IDTVEC(ioapic_intr127),
 194         IDTVEC(ioapic_intr128),
 195         IDTVEC(ioapic_intr129),
 196         IDTVEC(ioapic_intr130),
 197         IDTVEC(ioapic_intr131),
 198         IDTVEC(ioapic_intr132),
 199         IDTVEC(ioapic_intr133),
 200         IDTVEC(ioapic_intr134),
 201         IDTVEC(ioapic_intr135),
 202         IDTVEC(ioapic_intr136),
 203         IDTVEC(ioapic_intr137),
 204         IDTVEC(ioapic_intr138),
 205         IDTVEC(ioapic_intr139),
 206         IDTVEC(ioapic_intr140),
 207         IDTVEC(ioapic_intr141),
 208         IDTVEC(ioapic_intr142),
 209         IDTVEC(ioapic_intr143),
 210         IDTVEC(ioapic_intr144),
 211         IDTVEC(ioapic_intr145),
 212         IDTVEC(ioapic_intr146),
 213         IDTVEC(ioapic_intr147),
 214         IDTVEC(ioapic_intr148),
 215         IDTVEC(ioapic_intr149),
 216         IDTVEC(ioapic_intr150),
 217         IDTVEC(ioapic_intr151),
 218         IDTVEC(ioapic_intr152),
 219         IDTVEC(ioapic_intr153),
 220         IDTVEC(ioapic_intr154),
 221         IDTVEC(ioapic_intr155),
 222         IDTVEC(ioapic_intr156),
 223         IDTVEC(ioapic_intr157),
 224         IDTVEC(ioapic_intr158),
 225         IDTVEC(ioapic_intr159),
 226         IDTVEC(ioapic_intr160),
 227         IDTVEC(ioapic_intr161),
 228         IDTVEC(ioapic_intr162),
 229         IDTVEC(ioapic_intr163),
 230         IDTVEC(ioapic_intr164),
 231         IDTVEC(ioapic_intr165),
 232         IDTVEC(ioapic_intr166),
 233         IDTVEC(ioapic_intr167),
 234         IDTVEC(ioapic_intr168),
 235         IDTVEC(ioapic_intr169),
 236         IDTVEC(ioapic_intr170),
 237         IDTVEC(ioapic_intr171),
 238         IDTVEC(ioapic_intr172),
 239         IDTVEC(ioapic_intr173),
 240         IDTVEC(ioapic_intr174),
 241         IDTVEC(ioapic_intr175),
 242         IDTVEC(ioapic_intr176),
 243         IDTVEC(ioapic_intr177),
 244         IDTVEC(ioapic_intr178),
 245         IDTVEC(ioapic_intr179),
 246         IDTVEC(ioapic_intr180),
 247         IDTVEC(ioapic_intr181),
 248         IDTVEC(ioapic_intr182),
 249         IDTVEC(ioapic_intr183),
 250         IDTVEC(ioapic_intr184),
 251         IDTVEC(ioapic_intr185),
 252         IDTVEC(ioapic_intr186),
 253         IDTVEC(ioapic_intr187),
 254         IDTVEC(ioapic_intr188),
 255         IDTVEC(ioapic_intr189),
 256         IDTVEC(ioapic_intr190),
 257         IDTVEC(ioapic_intr191);
 258
 259 static inthand_t *ioapic_intr[IOAPIC_HWI_VECTORS] = {
 260         &IDTVEC(ioapic_intr0),
 261         &IDTVEC(ioapic_intr1),
 262         &IDTVEC(ioapic_intr2),
 263         &IDTVEC(ioapic_intr3),
 264         &IDTVEC(ioapic_intr4),
 265         &IDTVEC(ioapic_intr5),
 266         &IDTVEC(ioapic_intr6),
 267         &IDTVEC(ioapic_intr7),
 268         &IDTVEC(ioapic_intr8),
 269         &IDTVEC(ioapic_intr9),
 270         &IDTVEC(ioapic_intr10),
 271         &IDTVEC(ioapic_intr11),
 272         &IDTVEC(ioapic_intr12),
 273         &IDTVEC(ioapic_intr13),
 274         &IDTVEC(ioapic_intr14),
 275         &IDTVEC(ioapic_intr15),
 276         &IDTVEC(ioapic_intr16),
 277         &IDTVEC(ioapic_intr17),
 278         &IDTVEC(ioapic_intr18),
 279         &IDTVEC(ioapic_intr19),
 280         &IDTVEC(ioapic_intr20),
 281         &IDTVEC(ioapic_intr21),
 282         &IDTVEC(ioapic_intr22),
 283         &IDTVEC(ioapic_intr23),
 284         &IDTVEC(ioapic_intr24),
 285         &IDTVEC(ioapic_intr25),
 286         &IDTVEC(ioapic_intr26),
 287         &IDTVEC(ioapic_intr27),
 288         &IDTVEC(ioapic_intr28),
 289         &IDTVEC(ioapic_intr29),
 290         &IDTVEC(ioapic_intr30),
 291         &IDTVEC(ioapic_intr31),
 292         &IDTVEC(ioapic_intr32),
 293         &IDTVEC(ioapic_intr33),
 294         &IDTVEC(ioapic_intr34),
 295         &IDTVEC(ioapic_intr35),
 296         &IDTVEC(ioapic_intr36),
 297         &IDTVEC(ioapic_intr37),
 298         &IDTVEC(ioapic_intr38),
 299         &IDTVEC(ioapic_intr39),
 300         &IDTVEC(ioapic_intr40),
 301         &IDTVEC(ioapic_intr41),
 302         &IDTVEC(ioapic_intr42),
 303         &IDTVEC(ioapic_intr43),
 304         &IDTVEC(ioapic_intr44),
 305         &IDTVEC(ioapic_intr45),
 306         &IDTVEC(ioapic_intr46),
 307         &IDTVEC(ioapic_intr47),
 308         &IDTVEC(ioapic_intr48),
 309         &IDTVEC(ioapic_intr49),
 310         &IDTVEC(ioapic_intr50),
 311         &IDTVEC(ioapic_intr51),
 312         &IDTVEC(ioapic_intr52),
 313         &IDTVEC(ioapic_intr53),
 314         &IDTVEC(ioapic_intr54),
 315         &IDTVEC(ioapic_intr55),
 316         &IDTVEC(ioapic_intr56),
 317         &IDTVEC(ioapic_intr57),
 318         &IDTVEC(ioapic_intr58),
 319         &IDTVEC(ioapic_intr59),
 320         &IDTVEC(ioapic_intr60),
 321         &IDTVEC(ioapic_intr61),
 322         &IDTVEC(ioapic_intr62),
 323         &IDTVEC(ioapic_intr63),
 324         &IDTVEC(ioapic_intr64),
 325         &IDTVEC(ioapic_intr65),
 326         &IDTVEC(ioapic_intr66),
 327         &IDTVEC(ioapic_intr67),
 328         &IDTVEC(ioapic_intr68),
 329         &IDTVEC(ioapic_intr69),
 330         &IDTVEC(ioapic_intr70),
 331         &IDTVEC(ioapic_intr71),
 332         &IDTVEC(ioapic_intr72),
 333         &IDTVEC(ioapic_intr73),
 334         &IDTVEC(ioapic_intr74),
 335         &IDTVEC(ioapic_intr75),
 336         &IDTVEC(ioapic_intr76),
 337         &IDTVEC(ioapic_intr77),
 338         &IDTVEC(ioapic_intr78),
 339         &IDTVEC(ioapic_intr79),
 340         &IDTVEC(ioapic_intr80),
 341         &IDTVEC(ioapic_intr81),
 342         &IDTVEC(ioapic_intr82),
 343         &IDTVEC(ioapic_intr83),
 344         &IDTVEC(ioapic_intr84),
 345         &IDTVEC(ioapic_intr85),
 346         &IDTVEC(ioapic_intr86),
 347         &IDTVEC(ioapic_intr87),
 348         &IDTVEC(ioapic_intr88),
 349         &IDTVEC(ioapic_intr89),
 350         &IDTVEC(ioapic_intr90),
 351         &IDTVEC(ioapic_intr91),
 352         &IDTVEC(ioapic_intr92),
 353         &IDTVEC(ioapic_intr93),
 354         &IDTVEC(ioapic_intr94),
 355         &IDTVEC(ioapic_intr95),
 356         &IDTVEC(ioapic_intr96),
 357         &IDTVEC(ioapic_intr97),
 358         &IDTVEC(ioapic_intr98),
 359         &IDTVEC(ioapic_intr99),
 360         &IDTVEC(ioapic_intr100),
 361         &IDTVEC(ioapic_intr101),
 362         &IDTVEC(ioapic_intr102),
 363         &IDTVEC(ioapic_intr103),
 364         &IDTVEC(ioapic_intr104),
 365         &IDTVEC(ioapic_intr105),
 366         &IDTVEC(ioapic_intr106),
 367         &IDTVEC(ioapic_intr107),
 368         &IDTVEC(ioapic_intr108),
 369         &IDTVEC(ioapic_intr109),
 370         &IDTVEC(ioapic_intr110),
 371         &IDTVEC(ioapic_intr111),
 372         &IDTVEC(ioapic_intr112),
 373         &IDTVEC(ioapic_intr113),
 374         &IDTVEC(ioapic_intr114),
 375         &IDTVEC(ioapic_intr115),
 376         &IDTVEC(ioapic_intr116),
 377         &IDTVEC(ioapic_intr117),
 378         &IDTVEC(ioapic_intr118),
 379         &IDTVEC(ioapic_intr119),
 380         &IDTVEC(ioapic_intr120),
 381         &IDTVEC(ioapic_intr121),
 382         &IDTVEC(ioapic_intr122),
 383         &IDTVEC(ioapic_intr123),
 384         &IDTVEC(ioapic_intr124),
 385         &IDTVEC(ioapic_intr125),
 386         &IDTVEC(ioapic_intr126),
 387         &IDTVEC(ioapic_intr127),
 388         &IDTVEC(ioapic_intr128),
 389         &IDTVEC(ioapic_intr129),
 390         &IDTVEC(ioapic_intr130),
 391         &IDTVEC(ioapic_intr131),
 392         &IDTVEC(ioapic_intr132),
 393         &IDTVEC(ioapic_intr133),
 394         &IDTVEC(ioapic_intr134),
 395         &IDTVEC(ioapic_intr135),
 396         &IDTVEC(ioapic_intr136),
 397         &IDTVEC(ioapic_intr137),
 398         &IDTVEC(ioapic_intr138),
 399         &IDTVEC(ioapic_intr139),
 400         &IDTVEC(ioapic_intr140),
 401         &IDTVEC(ioapic_intr141),
 402         &IDTVEC(ioapic_intr142),
 403         &IDTVEC(ioapic_intr143),
 404         &IDTVEC(ioapic_intr144),
 405         &IDTVEC(ioapic_intr145),
 406         &IDTVEC(ioapic_intr146),
 407         &IDTVEC(ioapic_intr147),
 408         &IDTVEC(ioapic_intr148),
 409         &IDTVEC(ioapic_intr149),
 410         &IDTVEC(ioapic_intr150),
 411         &IDTVEC(ioapic_intr151),
 412         &IDTVEC(ioapic_intr152),
 413         &IDTVEC(ioapic_intr153),
 414         &IDTVEC(ioapic_intr154),
 415         &IDTVEC(ioapic_intr155),
 416         &IDTVEC(ioapic_intr156),
 417         &IDTVEC(ioapic_intr157),
 418         &IDTVEC(ioapic_intr158),
 419         &IDTVEC(ioapic_intr159),
 420         &IDTVEC(ioapic_intr160),
 421         &IDTVEC(ioapic_intr161),
 422         &IDTVEC(ioapic_intr162),
 423         &IDTVEC(ioapic_intr163),
 424         &IDTVEC(ioapic_intr164),
 425         &IDTVEC(ioapic_intr165),
 426         &IDTVEC(ioapic_intr166),
 427         &IDTVEC(ioapic_intr167),
 428         &IDTVEC(ioapic_intr168),
 429         &IDTVEC(ioapic_intr169),
 430         &IDTVEC(ioapic_intr170),
 431         &IDTVEC(ioapic_intr171),
 432         &IDTVEC(ioapic_intr172),
 433         &IDTVEC(ioapic_intr173),
 434         &IDTVEC(ioapic_intr174),
 435         &IDTVEC(ioapic_intr175),
 436         &IDTVEC(ioapic_intr176),
 437         &IDTVEC(ioapic_intr177),
 438         &IDTVEC(ioapic_intr178),
 439         &IDTVEC(ioapic_intr179),
 440         &IDTVEC(ioapic_intr180),
 441         &IDTVEC(ioapic_intr181),
 442         &IDTVEC(ioapic_intr182),
 443         &IDTVEC(ioapic_intr183),
 444         &IDTVEC(ioapic_intr184),
 445         &IDTVEC(ioapic_intr185),
 446         &IDTVEC(ioapic_intr186),
 447         &IDTVEC(ioapic_intr187),
 448         &IDTVEC(ioapic_intr188),
 449         &IDTVEC(ioapic_intr189),
 450         &IDTVEC(ioapic_intr190),
 451         &IDTVEC(ioapic_intr191)
 452 };
 453
 454 #define IOAPIC_HWI_SYSCALL      (IDT_OFFSET_SYSCALL - IDT_OFFSET)
 455
 456 static struct ioapic_irqmap {
 457         int                     im_type;        /* IOAPIC_IMT_ */
 458         enum intr_trigger       im_trig;
 459         enum intr_polarity      im_pola;
 460         int                     im_gsi;
 461         uint32_t                im_flags;       /* IOAPIC_IMF_ */
 462 } ioapic_irqmaps[MAX_HARDINTS]; /* XXX MAX_HARDINTS may not be correct */
 463
 464 #define IOAPIC_IMT_UNUSED       0
 465 #define IOAPIC_IMT_RESERVED     1
 466 #define IOAPIC_IMT_LINE         2
 467 #define IOAPIC_IMT_SYSCALL      3
 468
 469 #define IOAPIC_IMF_CONF         0x1
 470
 471 extern void     IOAPIC_INTREN(int);
 472 extern void     IOAPIC_INTRDIS(int);
 473
 474 static int      ioapic_setvar(int, const void *);
 475 static int      ioapic_getvar(int, void *);
 476 static int      ioapic_vectorctl(int, int, int);
 477 static void     ioapic_finalize(void);
 478 static void     ioapic_cleanup(void);
 479 static void     ioapic_setdefault(void);
 480 static void     ioapic_stabilize(void);
 481 static void     ioapic_initmap(void);
 482 static void     ioapic_intr_config(int, enum intr_trigger, enum intr_polarity);
 483
 484 struct machintr_abi MachIntrABI_IOAPIC = {
 485         MACHINTR_IOAPIC,
 486         .intrdis        = IOAPIC_INTRDIS,
 487         .intren         = IOAPIC_INTREN,
 488         .vectorctl      = ioapic_vectorctl,
 489         .setvar         = ioapic_setvar,
 490         .getvar         = ioapic_getvar,
 491         .finalize       = ioapic_finalize,
 492         .cleanup        = ioapic_cleanup,
 493         .setdefault     = ioapic_setdefault,
 494         .stabilize      = ioapic_stabilize,
 495         .initmap        = ioapic_initmap,
 496         .intr_config    = ioapic_intr_config
 497 };
 498
 499 static int      ioapic_abi_extint_irq = -1;
 500
 501 static int
 502 ioapic_setvar(int varid, const void *buf)
 503 {
 504         return ENOENT;
 505 }
 506
 507 static int
 508 ioapic_getvar(int varid, void *buf)
 509 {
 510         return ENOENT;
 511 }
 512
 513 static void
 514 ioapic_finalize(void)
 515 {
 516         KKASSERT(MachIntrABI.type == MACHINTR_IOAPIC);
 517         KKASSERT(apic_io_enable);
 518
 519         /*
 520          * If an IMCR is present, program bit 0 to disconnect the 8259
 521          * from the BSP.
 522          */
 523         if (imcr_present) {
 524                 outb(0x22, 0x70);       /* select IMCR */
 525                 outb(0x23, 0x01);       /* disconnect 8259 */
 526         }
 527 }
 528
 529 /*
 530  * This routine is called after physical interrupts are enabled but before
 531  * the critical section is released.  We need to clean out any interrupts
 532  * that had already been posted to the cpu.
 533  */
 534 static void
 535 ioapic_cleanup(void)
 536 {
 537         bzero(mdcpu->gd_ipending, sizeof(mdcpu->gd_ipending));
 538 }
 539
 540 /* Must never be called */
 541 static void
 542 ioapic_stabilize(void)
 543 {
 544         panic("ioapic_stabilize() is called\n");
 545 }
 546
 547 static int
 548 ioapic_vectorctl(int op, int intr, int flags)
 549 {
 550         int error;
 551         int vector;
 552         int select;
 553         uint32_t value;
 554         u_long ef;
 555
 556         if (intr < 0 || intr >= IOAPIC_HWI_VECTORS ||
 557             intr == IOAPIC_HWI_SYSCALL)
 558                 return EINVAL;
 559
 560         ef = read_eflags();
 561         cpu_disable_intr();
 562         error = 0;
 563
 564         switch(op) {
 565         case MACHINTR_VECTOR_SETUP:
 566                 vector = IDT_OFFSET + intr;
 567                 setidt(vector, ioapic_intr[intr], SDT_SYS386IGT,
 568                        SEL_KPL, GSEL(GCODE_SEL, SEL_KPL));
 569
 570                 /*
 571                  * Now reprogram the vector in the IO APIC.  In order to avoid
 572                  * losing an EOI for a level interrupt, which is vector based,
 573                  * make sure that the IO APIC is programmed for edge-triggering
 574                  * first, then reprogrammed with the new vector.  This should
 575                  * clear the IRR bit.
 576                  */
 577                 if (int_to_apicintpin[intr].ioapic >= 0) {
 578                         imen_lock();
 579
 580                         select = int_to_apicintpin[intr].redirindex;
 581                         value = ioapic_read(int_to_apicintpin[intr].apic_address,
 582                                             select);
 583                         value |= IOART_INTMSET;
 584
 585                         ioapic_write(int_to_apicintpin[intr].apic_address,
 586                                      select, (value & ~APIC_TRIGMOD_MASK));
 587                         ioapic_write(int_to_apicintpin[intr].apic_address,
 588                                      select, (value & ~IOART_INTVEC) | vector);
 589
 590                         imen_unlock();
 591                 }
 592
 593                 machintr_intren(intr);
 594                 break;
 595
 596         case MACHINTR_VECTOR_TEARDOWN:
 597                 /*
 598                  * Teardown an interrupt vector.  The vector should already be
 599                  * installed in the cpu's IDT, but make sure.
 600                  */
 601                 machintr_intrdis(intr);
 602
 603                 vector = IDT_OFFSET + intr;
 604                 setidt(vector, ioapic_intr[intr], SDT_SYS386IGT, SEL_KPL,
 605                        GSEL(GCODE_SEL, SEL_KPL));
 606
 607                 /*
 608                  * In order to avoid losing an EOI for a level interrupt, which
 609                  * is vector based, make sure that the IO APIC is programmed for
 610                  * edge-triggering first, then reprogrammed with the new vector.
 611                  * This should clear the IRR bit.
 612                  */
 613                 if (int_to_apicintpin[intr].ioapic >= 0) {
 614                         imen_lock();
 615
 616                         select = int_to_apicintpin[intr].redirindex;
 617                         value = ioapic_read(int_to_apicintpin[intr].apic_address,
 618                                             select);
 619
 620                         ioapic_write(int_to_apicintpin[intr].apic_address,
 621                                      select, (value & ~APIC_TRIGMOD_MASK));
 622                         ioapic_write(int_to_apicintpin[intr].apic_address,
 623                                      select, (value & ~IOART_INTVEC) | vector);
 624
 625                         imen_unlock();
 626                 }
 627                 break;
 628
 629         default:
 630                 error = EOPNOTSUPP;
 631                 break;
 632         }
 633
 634         write_eflags(ef);
 635         return error;
 636 }
 637
 638 static void
 639 ioapic_setdefault(void)
 640 {
 641         int intr;
 642
 643         for (intr = 0; intr < IOAPIC_HWI_VECTORS; ++intr) {
 644                 if (intr == IOAPIC_HWI_SYSCALL)
 645                         continue;
 646                 setidt(IDT_OFFSET + intr, ioapic_intr[intr], SDT_SYS386IGT,
 647                        SEL_KPL, GSEL(GCODE_SEL, SEL_KPL));
 648         }
 649 }
 650
 651 static void
 652 ioapic_initmap(void)
 653 {
 654         int i;
 655
 656         for (i = 0; i < IOAPIC_HWI_VECTORS; ++i)
 657                 ioapic_irqmaps[i].im_gsi = -1;
 658         ioapic_irqmaps[IOAPIC_HWI_SYSCALL].im_type = IOAPIC_IMT_SYSCALL;
 659 }
 660
 661 void
 662 ioapic_abi_set_irqmap(int irq, int gsi, enum intr_trigger trig,
 663     enum intr_polarity pola)
 664 {
 665         struct apic_intmapinfo *info;
 666         struct ioapic_irqmap *map;
 667         void *ioaddr;
 668         int pin;
 669
 670         KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
 671         KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
 672
 673         KKASSERT(irq >= 0 && irq < IOAPIC_HWI_VECTORS);
 674         map = &ioapic_irqmaps[irq];
 675
 676         KKASSERT(map->im_type == IOAPIC_IMT_UNUSED);
 677         map->im_type = IOAPIC_IMT_LINE;
 678
 679         map->im_gsi = gsi;
 680         map->im_trig = trig;
 681         map->im_pola = pola;
 682
 683         if (bootverbose) {
 684                 kprintf("IOAPIC: irq %d -> gsi %d %s/%s\n",
 685                         irq, map->im_gsi,
 686                         intr_str_trigger(map->im_trig),
 687                         intr_str_polarity(map->im_pola));
 688         }
 689
 690         pin = ioapic_gsi_pin(map->im_gsi);
 691         ioaddr = ioapic_gsi_ioaddr(map->im_gsi);
 692
 693         info = &int_to_apicintpin[irq];
 694
 695         imen_lock();
 696
 697         info->ioapic = 0; /* XXX unused */
 698         info->int_pin = pin;
 699         info->apic_address = ioaddr;
 700         info->redirindex = IOAPIC_REDTBL + (2 * pin);
 701         info->flags = IOAPIC_IM_FLAG_MASKED;
 702         if (map->im_trig == INTR_TRIGGER_LEVEL)
 703                 info->flags |= IOAPIC_IM_FLAG_LEVEL;
 704
 705         ioapic_pin_setup(ioaddr, pin, IDT_OFFSET + irq,
 706             map->im_trig, map->im_pola);
 707
 708         imen_unlock();
 709 }
 710
 711 void
 712 ioapic_abi_fixup_irqmap(void)
 713 {
 714         int i;
 715
 716         for (i = 0; i < 16; ++i) {
 717                 struct ioapic_irqmap *map = &ioapic_irqmaps[i];
 718
 719                 if (map->im_type == IOAPIC_IMT_UNUSED) {
 720                         map->im_type = IOAPIC_IMT_RESERVED;
 721                         if (bootverbose)
 722                                 kprintf("IOAPIC: irq %d reserved\n", i);
 723                 }
 724         }
 725 }
 726
 727 int
 728 ioapic_abi_find_gsi(int gsi, enum intr_trigger trig, enum intr_polarity pola)
 729 {
 730         int irq;
 731
 732         KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
 733         KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
 734
 735         for (irq = 0; irq < IOAPIC_HWI_VECTORS; ++irq) {
 736                 const struct ioapic_irqmap *map = &ioapic_irqmaps[irq];
 737
 738                 if (map->im_gsi == gsi) {
 739                         KKASSERT(map->im_type == IOAPIC_IMT_LINE);
 740
 741                         if (map->im_flags & IOAPIC_IMF_CONF) {
 742                                 if (map->im_trig != trig ||
 743                                     map->im_pola != pola)
 744                                         return -1;
 745                         }
 746                         return irq;
 747                 }
 748         }
 749         return -1;
 750 }
 751
 752 int
 753 ioapic_abi_find_irq(int irq, enum intr_trigger trig, enum intr_polarity pola)
 754 {
 755         const struct ioapic_irqmap *map;
 756
 757         KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
 758         KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
 759
 760         if (irq < 0 || irq >= IOAPIC_HWI_VECTORS)
 761                 return -1;
 762         map = &ioapic_irqmaps[irq];
 763
 764         if (map->im_type != IOAPIC_IMT_LINE)
 765                 return -1;
 766
 767         if (map->im_flags & IOAPIC_IMF_CONF) {
 768                 if (map->im_trig != trig || map->im_pola != pola)
 769                         return -1;
 770         }
 771         return irq;
 772 }
 773
 774 static void
 775 ioapic_intr_config(int irq, enum intr_trigger trig, enum intr_polarity pola)
 776 {
 777         struct apic_intmapinfo *info;
 778         struct ioapic_irqmap *map;
 779         void *ioaddr;
 780         int pin;
 781
 782         KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
 783         KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
 784
 785         KKASSERT(irq >= 0 && irq < IOAPIC_HWI_VECTORS);
 786         map = &ioapic_irqmaps[irq];
 787
 788         KKASSERT(map->im_type == IOAPIC_IMT_LINE);
 789
 790 #ifdef notyet
 791         if (map->im_flags & IOAPIC_IMF_CONF) {
 792                 if (trig != map->im_trig) {
 793                         panic("ioapic_intr_config: trig %s -> %s\n",
 794                               intr_str_trigger(map->im_trig),
 795                               intr_str_trigger(trig));
 796                 }
 797                 if (pola != map->im_pola) {
 798                         panic("ioapic_intr_config: pola %s -> %s\n",
 799                               intr_str_polarity(map->im_pola),
 800                               intr_str_polarity(pola));
 801                 }
 802                 return;
 803         }
 804 #endif
 805         map->im_flags |= IOAPIC_IMF_CONF;
 806
 807         if (trig == map->im_trig && pola == map->im_pola)
 808                 return;
 809
 810         if (bootverbose) {
 811                 kprintf("IOAPIC: irq %d, gsi %d %s/%s -> %s/%s\n",
 812                         irq, map->im_gsi,
 813                         intr_str_trigger(map->im_trig),
 814                         intr_str_polarity(map->im_pola),
 815                         intr_str_trigger(trig),
 816                         intr_str_polarity(pola));
 817         }
 818         map->im_trig = trig;
 819         map->im_pola = pola;
 820
 821         pin = ioapic_gsi_pin(map->im_gsi);
 822         ioaddr = ioapic_gsi_ioaddr(map->im_gsi);
 823
 824         info = &int_to_apicintpin[irq];
 825
 826         imen_lock();
 827
 828         info->flags &= ~IOAPIC_IM_FLAG_LEVEL;
 829         if (map->im_trig == INTR_TRIGGER_LEVEL)
 830                 info->flags |= IOAPIC_IM_FLAG_LEVEL;
 831
 832         ioapic_pin_setup(ioaddr, pin, IDT_OFFSET + irq,
 833             map->im_trig, map->im_pola);
 834
 835         imen_unlock();
 836 }
 837
 838 int
 839 ioapic_abi_extint_irqmap(int irq)
 840 {
 841         struct apic_intmapinfo *info;
 842         struct ioapic_irqmap *map;
 843         void *ioaddr;
 844         int pin, error, vec;
 845
 846         vec = IDT_OFFSET + irq;
 847
 848         if (ioapic_abi_extint_irq == irq)
 849                 return 0;
 850         else if (ioapic_abi_extint_irq >= 0)
 851                 return EEXIST;
 852
 853         error = icu_ioapic_extint(irq, vec);
 854         if (error)
 855                 return error;
 856
 857         map = &ioapic_irqmaps[irq];
 858
 859         KKASSERT(map->im_type == IOAPIC_IMT_RESERVED ||
 860                  map->im_type == IOAPIC_IMT_LINE);
 861         if (map->im_type == IOAPIC_IMT_LINE) {
 862                 if (map->im_flags & IOAPIC_IMF_CONF)
 863                         return EEXIST;
 864         }
 865         ioapic_abi_extint_irq = irq;
 866
 867         map->im_type = IOAPIC_IMT_LINE;
 868         map->im_trig = INTR_TRIGGER_EDGE;
 869         map->im_pola = INTR_POLARITY_HIGH;
 870         map->im_flags = IOAPIC_IMF_CONF;
 871
 872         map->im_gsi = ioapic_extpin_gsi();
 873         KKASSERT(map->im_gsi >= 0);
 874
 875         if (bootverbose) {
 876                 kprintf("IOAPIC: irq %d -> extint gsi %d %s/%s\n",
 877                         irq, map->im_gsi,
 878                         intr_str_trigger(map->im_trig),
 879                         intr_str_polarity(map->im_pola));
 880         }
 881
 882         pin = ioapic_gsi_pin(map->im_gsi);
 883         ioaddr = ioapic_gsi_ioaddr(map->im_gsi);
 884
 885         info = &int_to_apicintpin[irq];
 886
 887         imen_lock();
 888
 889         info->ioapic = 0; /* XXX unused */
 890         info->int_pin = pin;
 891         info->apic_address = ioaddr;
 892         info->redirindex = IOAPIC_REDTBL + (2 * pin);
 893         info->flags = IOAPIC_IM_FLAG_MASKED;
 894
 895         ioapic_extpin_setup(ioaddr, pin, vec);
 896
 897         imen_unlock();
 898
 899         return 0;
 900 }
 901
 902 #endif  /* SMP */