sys/platform/pc64/apic/ioapic_abi.c

   1 /*
   2  * Copyright (c) 1991 The Regents of the University of California.
   3  * Copyright (c) 1996, by Steve Passe.  All rights reserved.
   4  * Copyright (c) 2005,2008 The DragonFly Project.  All rights reserved.
   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/pc64/apic/apic_abi.c,v 1.1 2008/08/29 17:07:12 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/apic/ioapic_abi.h>
  60 #include <machine_base/apic/ioapic_ipl.h>
  61
  62 #ifdef SMP /* APIC-IO */
  63
  64 extern inthand_t
  65         IDTVEC(ioapic_intr0),
  66         IDTVEC(ioapic_intr1),
  67         IDTVEC(ioapic_intr2),
  68         IDTVEC(ioapic_intr3),
  69         IDTVEC(ioapic_intr4),
  70         IDTVEC(ioapic_intr5),
  71         IDTVEC(ioapic_intr6),
  72         IDTVEC(ioapic_intr7),
  73         IDTVEC(ioapic_intr8),
  74         IDTVEC(ioapic_intr9),
  75         IDTVEC(ioapic_intr10),
  76         IDTVEC(ioapic_intr11),
  77         IDTVEC(ioapic_intr12),
  78         IDTVEC(ioapic_intr13),
  79         IDTVEC(ioapic_intr14),
  80         IDTVEC(ioapic_intr15),
  81         IDTVEC(ioapic_intr16),
  82         IDTVEC(ioapic_intr17),
  83         IDTVEC(ioapic_intr18),
  84         IDTVEC(ioapic_intr19),
  85         IDTVEC(ioapic_intr20),
  86         IDTVEC(ioapic_intr21),
  87         IDTVEC(ioapic_intr22),
  88         IDTVEC(ioapic_intr23),
  89         IDTVEC(ioapic_intr24),
  90         IDTVEC(ioapic_intr25),
  91         IDTVEC(ioapic_intr26),
  92         IDTVEC(ioapic_intr27),
  93         IDTVEC(ioapic_intr28),
  94         IDTVEC(ioapic_intr29),
  95         IDTVEC(ioapic_intr30),
  96         IDTVEC(ioapic_intr31),
  97         IDTVEC(ioapic_intr32),
  98         IDTVEC(ioapic_intr33),
  99         IDTVEC(ioapic_intr34),
 100         IDTVEC(ioapic_intr35),
 101         IDTVEC(ioapic_intr36),
 102         IDTVEC(ioapic_intr37),
 103         IDTVEC(ioapic_intr38),
 104         IDTVEC(ioapic_intr39),
 105         IDTVEC(ioapic_intr40),
 106         IDTVEC(ioapic_intr41),
 107         IDTVEC(ioapic_intr42),
 108         IDTVEC(ioapic_intr43),
 109         IDTVEC(ioapic_intr44),
 110         IDTVEC(ioapic_intr45),
 111         IDTVEC(ioapic_intr46),
 112         IDTVEC(ioapic_intr47),
 113         IDTVEC(ioapic_intr48),
 114         IDTVEC(ioapic_intr49),
 115         IDTVEC(ioapic_intr50),
 116         IDTVEC(ioapic_intr51),
 117         IDTVEC(ioapic_intr52),
 118         IDTVEC(ioapic_intr53),
 119         IDTVEC(ioapic_intr54),
 120         IDTVEC(ioapic_intr55),
 121         IDTVEC(ioapic_intr56),
 122         IDTVEC(ioapic_intr57),
 123         IDTVEC(ioapic_intr58),
 124         IDTVEC(ioapic_intr59),
 125         IDTVEC(ioapic_intr60),
 126         IDTVEC(ioapic_intr61),
 127         IDTVEC(ioapic_intr62),
 128         IDTVEC(ioapic_intr63),
 129         IDTVEC(ioapic_intr64),
 130         IDTVEC(ioapic_intr65),
 131         IDTVEC(ioapic_intr66),
 132         IDTVEC(ioapic_intr67),
 133         IDTVEC(ioapic_intr68),
 134         IDTVEC(ioapic_intr69),
 135         IDTVEC(ioapic_intr70),
 136         IDTVEC(ioapic_intr71),
 137         IDTVEC(ioapic_intr72),
 138         IDTVEC(ioapic_intr73),
 139         IDTVEC(ioapic_intr74),
 140         IDTVEC(ioapic_intr75),
 141         IDTVEC(ioapic_intr76),
 142         IDTVEC(ioapic_intr77),
 143         IDTVEC(ioapic_intr78),
 144         IDTVEC(ioapic_intr79),
 145         IDTVEC(ioapic_intr80),
 146         IDTVEC(ioapic_intr81),
 147         IDTVEC(ioapic_intr82),
 148         IDTVEC(ioapic_intr83),
 149         IDTVEC(ioapic_intr84),
 150         IDTVEC(ioapic_intr85),
 151         IDTVEC(ioapic_intr86),
 152         IDTVEC(ioapic_intr87),
 153         IDTVEC(ioapic_intr88),
 154         IDTVEC(ioapic_intr89),
 155         IDTVEC(ioapic_intr90),
 156         IDTVEC(ioapic_intr91),
 157         IDTVEC(ioapic_intr92),
 158         IDTVEC(ioapic_intr93),
 159         IDTVEC(ioapic_intr94),
 160         IDTVEC(ioapic_intr95),
 161         IDTVEC(ioapic_intr96),
 162         IDTVEC(ioapic_intr97),
 163         IDTVEC(ioapic_intr98),
 164         IDTVEC(ioapic_intr99),
 165         IDTVEC(ioapic_intr100),
 166         IDTVEC(ioapic_intr101),
 167         IDTVEC(ioapic_intr102),
 168         IDTVEC(ioapic_intr103),
 169         IDTVEC(ioapic_intr104),
 170         IDTVEC(ioapic_intr105),
 171         IDTVEC(ioapic_intr106),
 172         IDTVEC(ioapic_intr107),
 173         IDTVEC(ioapic_intr108),
 174         IDTVEC(ioapic_intr109),
 175         IDTVEC(ioapic_intr110),
 176         IDTVEC(ioapic_intr111),
 177         IDTVEC(ioapic_intr112),
 178         IDTVEC(ioapic_intr113),
 179         IDTVEC(ioapic_intr114),
 180         IDTVEC(ioapic_intr115),
 181         IDTVEC(ioapic_intr116),
 182         IDTVEC(ioapic_intr117),
 183         IDTVEC(ioapic_intr118),
 184         IDTVEC(ioapic_intr119),
 185         IDTVEC(ioapic_intr120),
 186         IDTVEC(ioapic_intr121),
 187         IDTVEC(ioapic_intr122),
 188         IDTVEC(ioapic_intr123),
 189         IDTVEC(ioapic_intr124),
 190         IDTVEC(ioapic_intr125),
 191         IDTVEC(ioapic_intr126),
 192         IDTVEC(ioapic_intr127),
 193         IDTVEC(ioapic_intr128),
 194         IDTVEC(ioapic_intr129),
 195         IDTVEC(ioapic_intr130),
 196         IDTVEC(ioapic_intr131),
 197         IDTVEC(ioapic_intr132),
 198         IDTVEC(ioapic_intr133),
 199         IDTVEC(ioapic_intr134),
 200         IDTVEC(ioapic_intr135),
 201         IDTVEC(ioapic_intr136),
 202         IDTVEC(ioapic_intr137),
 203         IDTVEC(ioapic_intr138),
 204         IDTVEC(ioapic_intr139),
 205         IDTVEC(ioapic_intr140),
 206         IDTVEC(ioapic_intr141),
 207         IDTVEC(ioapic_intr142),
 208         IDTVEC(ioapic_intr143),
 209         IDTVEC(ioapic_intr144),
 210         IDTVEC(ioapic_intr145),
 211         IDTVEC(ioapic_intr146),
 212         IDTVEC(ioapic_intr147),
 213         IDTVEC(ioapic_intr148),
 214         IDTVEC(ioapic_intr149),
 215         IDTVEC(ioapic_intr150),
 216         IDTVEC(ioapic_intr151),
 217         IDTVEC(ioapic_intr152),
 218         IDTVEC(ioapic_intr153),
 219         IDTVEC(ioapic_intr154),
 220         IDTVEC(ioapic_intr155),
 221         IDTVEC(ioapic_intr156),
 222         IDTVEC(ioapic_intr157),
 223         IDTVEC(ioapic_intr158),
 224         IDTVEC(ioapic_intr159),
 225         IDTVEC(ioapic_intr160),
 226         IDTVEC(ioapic_intr161),
 227         IDTVEC(ioapic_intr162),
 228         IDTVEC(ioapic_intr163),
 229         IDTVEC(ioapic_intr164),
 230         IDTVEC(ioapic_intr165),
 231         IDTVEC(ioapic_intr166),
 232         IDTVEC(ioapic_intr167),
 233         IDTVEC(ioapic_intr168),
 234         IDTVEC(ioapic_intr169),
 235         IDTVEC(ioapic_intr170),
 236         IDTVEC(ioapic_intr171),
 237         IDTVEC(ioapic_intr172),
 238         IDTVEC(ioapic_intr173),
 239         IDTVEC(ioapic_intr174),
 240         IDTVEC(ioapic_intr175),
 241         IDTVEC(ioapic_intr176),
 242         IDTVEC(ioapic_intr177),
 243         IDTVEC(ioapic_intr178),
 244         IDTVEC(ioapic_intr179),
 245         IDTVEC(ioapic_intr180),
 246         IDTVEC(ioapic_intr181),
 247         IDTVEC(ioapic_intr182),
 248         IDTVEC(ioapic_intr183),
 249         IDTVEC(ioapic_intr184),
 250         IDTVEC(ioapic_intr185),
 251         IDTVEC(ioapic_intr186),
 252         IDTVEC(ioapic_intr187),
 253         IDTVEC(ioapic_intr188),
 254         IDTVEC(ioapic_intr189),
 255         IDTVEC(ioapic_intr190),
 256         IDTVEC(ioapic_intr191);
 257
 258 static inthand_t *ioapic_intr[IOAPIC_HWI_VECTORS] = {
 259         &IDTVEC(ioapic_intr0),
 260         &IDTVEC(ioapic_intr1),
 261         &IDTVEC(ioapic_intr2),
 262         &IDTVEC(ioapic_intr3),
 263         &IDTVEC(ioapic_intr4),
 264         &IDTVEC(ioapic_intr5),
 265         &IDTVEC(ioapic_intr6),
 266         &IDTVEC(ioapic_intr7),
 267         &IDTVEC(ioapic_intr8),
 268         &IDTVEC(ioapic_intr9),
 269         &IDTVEC(ioapic_intr10),
 270         &IDTVEC(ioapic_intr11),
 271         &IDTVEC(ioapic_intr12),
 272         &IDTVEC(ioapic_intr13),
 273         &IDTVEC(ioapic_intr14),
 274         &IDTVEC(ioapic_intr15),
 275         &IDTVEC(ioapic_intr16),
 276         &IDTVEC(ioapic_intr17),
 277         &IDTVEC(ioapic_intr18),
 278         &IDTVEC(ioapic_intr19),
 279         &IDTVEC(ioapic_intr20),
 280         &IDTVEC(ioapic_intr21),
 281         &IDTVEC(ioapic_intr22),
 282         &IDTVEC(ioapic_intr23),
 283         &IDTVEC(ioapic_intr24),
 284         &IDTVEC(ioapic_intr25),
 285         &IDTVEC(ioapic_intr26),
 286         &IDTVEC(ioapic_intr27),
 287         &IDTVEC(ioapic_intr28),
 288         &IDTVEC(ioapic_intr29),
 289         &IDTVEC(ioapic_intr30),
 290         &IDTVEC(ioapic_intr31),
 291         &IDTVEC(ioapic_intr32),
 292         &IDTVEC(ioapic_intr33),
 293         &IDTVEC(ioapic_intr34),
 294         &IDTVEC(ioapic_intr35),
 295         &IDTVEC(ioapic_intr36),
 296         &IDTVEC(ioapic_intr37),
 297         &IDTVEC(ioapic_intr38),
 298         &IDTVEC(ioapic_intr39),
 299         &IDTVEC(ioapic_intr40),
 300         &IDTVEC(ioapic_intr41),
 301         &IDTVEC(ioapic_intr42),
 302         &IDTVEC(ioapic_intr43),
 303         &IDTVEC(ioapic_intr44),
 304         &IDTVEC(ioapic_intr45),
 305         &IDTVEC(ioapic_intr46),
 306         &IDTVEC(ioapic_intr47),
 307         &IDTVEC(ioapic_intr48),
 308         &IDTVEC(ioapic_intr49),
 309         &IDTVEC(ioapic_intr50),
 310         &IDTVEC(ioapic_intr51),
 311         &IDTVEC(ioapic_intr52),
 312         &IDTVEC(ioapic_intr53),
 313         &IDTVEC(ioapic_intr54),
 314         &IDTVEC(ioapic_intr55),
 315         &IDTVEC(ioapic_intr56),
 316         &IDTVEC(ioapic_intr57),
 317         &IDTVEC(ioapic_intr58),
 318         &IDTVEC(ioapic_intr59),
 319         &IDTVEC(ioapic_intr60),
 320         &IDTVEC(ioapic_intr61),
 321         &IDTVEC(ioapic_intr62),
 322         &IDTVEC(ioapic_intr63),
 323         &IDTVEC(ioapic_intr64),
 324         &IDTVEC(ioapic_intr65),
 325         &IDTVEC(ioapic_intr66),
 326         &IDTVEC(ioapic_intr67),
 327         &IDTVEC(ioapic_intr68),
 328         &IDTVEC(ioapic_intr69),
 329         &IDTVEC(ioapic_intr70),
 330         &IDTVEC(ioapic_intr71),
 331         &IDTVEC(ioapic_intr72),
 332         &IDTVEC(ioapic_intr73),
 333         &IDTVEC(ioapic_intr74),
 334         &IDTVEC(ioapic_intr75),
 335         &IDTVEC(ioapic_intr76),
 336         &IDTVEC(ioapic_intr77),
 337         &IDTVEC(ioapic_intr78),
 338         &IDTVEC(ioapic_intr79),
 339         &IDTVEC(ioapic_intr80),
 340         &IDTVEC(ioapic_intr81),
 341         &IDTVEC(ioapic_intr82),
 342         &IDTVEC(ioapic_intr83),
 343         &IDTVEC(ioapic_intr84),
 344         &IDTVEC(ioapic_intr85),
 345         &IDTVEC(ioapic_intr86),
 346         &IDTVEC(ioapic_intr87),
 347         &IDTVEC(ioapic_intr88),
 348         &IDTVEC(ioapic_intr89),
 349         &IDTVEC(ioapic_intr90),
 350         &IDTVEC(ioapic_intr91),
 351         &IDTVEC(ioapic_intr92),
 352         &IDTVEC(ioapic_intr93),
 353         &IDTVEC(ioapic_intr94),
 354         &IDTVEC(ioapic_intr95),
 355         &IDTVEC(ioapic_intr96),
 356         &IDTVEC(ioapic_intr97),
 357         &IDTVEC(ioapic_intr98),
 358         &IDTVEC(ioapic_intr99),
 359         &IDTVEC(ioapic_intr100),
 360         &IDTVEC(ioapic_intr101),
 361         &IDTVEC(ioapic_intr102),
 362         &IDTVEC(ioapic_intr103),
 363         &IDTVEC(ioapic_intr104),
 364         &IDTVEC(ioapic_intr105),
 365         &IDTVEC(ioapic_intr106),
 366         &IDTVEC(ioapic_intr107),
 367         &IDTVEC(ioapic_intr108),
 368         &IDTVEC(ioapic_intr109),
 369         &IDTVEC(ioapic_intr110),
 370         &IDTVEC(ioapic_intr111),
 371         &IDTVEC(ioapic_intr112),
 372         &IDTVEC(ioapic_intr113),
 373         &IDTVEC(ioapic_intr114),
 374         &IDTVEC(ioapic_intr115),
 375         &IDTVEC(ioapic_intr116),
 376         &IDTVEC(ioapic_intr117),
 377         &IDTVEC(ioapic_intr118),
 378         &IDTVEC(ioapic_intr119),
 379         &IDTVEC(ioapic_intr120),
 380         &IDTVEC(ioapic_intr121),
 381         &IDTVEC(ioapic_intr122),
 382         &IDTVEC(ioapic_intr123),
 383         &IDTVEC(ioapic_intr124),
 384         &IDTVEC(ioapic_intr125),
 385         &IDTVEC(ioapic_intr126),
 386         &IDTVEC(ioapic_intr127),
 387         &IDTVEC(ioapic_intr128),
 388         &IDTVEC(ioapic_intr129),
 389         &IDTVEC(ioapic_intr130),
 390         &IDTVEC(ioapic_intr131),
 391         &IDTVEC(ioapic_intr132),
 392         &IDTVEC(ioapic_intr133),
 393         &IDTVEC(ioapic_intr134),
 394         &IDTVEC(ioapic_intr135),
 395         &IDTVEC(ioapic_intr136),
 396         &IDTVEC(ioapic_intr137),
 397         &IDTVEC(ioapic_intr138),
 398         &IDTVEC(ioapic_intr139),
 399         &IDTVEC(ioapic_intr140),
 400         &IDTVEC(ioapic_intr141),
 401         &IDTVEC(ioapic_intr142),
 402         &IDTVEC(ioapic_intr143),
 403         &IDTVEC(ioapic_intr144),
 404         &IDTVEC(ioapic_intr145),
 405         &IDTVEC(ioapic_intr146),
 406         &IDTVEC(ioapic_intr147),
 407         &IDTVEC(ioapic_intr148),
 408         &IDTVEC(ioapic_intr149),
 409         &IDTVEC(ioapic_intr150),
 410         &IDTVEC(ioapic_intr151),
 411         &IDTVEC(ioapic_intr152),
 412         &IDTVEC(ioapic_intr153),
 413         &IDTVEC(ioapic_intr154),
 414         &IDTVEC(ioapic_intr155),
 415         &IDTVEC(ioapic_intr156),
 416         &IDTVEC(ioapic_intr157),
 417         &IDTVEC(ioapic_intr158),
 418         &IDTVEC(ioapic_intr159),
 419         &IDTVEC(ioapic_intr160),
 420         &IDTVEC(ioapic_intr161),
 421         &IDTVEC(ioapic_intr162),
 422         &IDTVEC(ioapic_intr163),
 423         &IDTVEC(ioapic_intr164),
 424         &IDTVEC(ioapic_intr165),
 425         &IDTVEC(ioapic_intr166),
 426         &IDTVEC(ioapic_intr167),
 427         &IDTVEC(ioapic_intr168),
 428         &IDTVEC(ioapic_intr169),
 429         &IDTVEC(ioapic_intr170),
 430         &IDTVEC(ioapic_intr171),
 431         &IDTVEC(ioapic_intr172),
 432         &IDTVEC(ioapic_intr173),
 433         &IDTVEC(ioapic_intr174),
 434         &IDTVEC(ioapic_intr175),
 435         &IDTVEC(ioapic_intr176),
 436         &IDTVEC(ioapic_intr177),
 437         &IDTVEC(ioapic_intr178),
 438         &IDTVEC(ioapic_intr179),
 439         &IDTVEC(ioapic_intr180),
 440         &IDTVEC(ioapic_intr181),
 441         &IDTVEC(ioapic_intr182),
 442         &IDTVEC(ioapic_intr183),
 443         &IDTVEC(ioapic_intr184),
 444         &IDTVEC(ioapic_intr185),
 445         &IDTVEC(ioapic_intr186),
 446         &IDTVEC(ioapic_intr187),
 447         &IDTVEC(ioapic_intr188),
 448         &IDTVEC(ioapic_intr189),
 449         &IDTVEC(ioapic_intr190),
 450         &IDTVEC(ioapic_intr191)
 451 };
 452
 453 #define IOAPIC_HWI_SYSCALL      (IDT_OFFSET_SYSCALL - IDT_OFFSET)
 454
 455 static struct ioapic_irqmap {
 456         int                     im_type;        /* IOAPIC_IMT_ */
 457         enum intr_trigger       im_trig;
 458         enum intr_polarity      im_pola;
 459         int                     im_gsi;
 460         uint32_t                im_flags;       /* IOAPIC_IMF_ */
 461 } ioapic_irqmaps[MAX_HARDINTS]; /* XXX MAX_HARDINTS may not be correct */
 462
 463 #define IOAPIC_IMT_UNUSED       0
 464 #define IOAPIC_IMT_RESERVED     1
 465 #define IOAPIC_IMT_LINE         2
 466 #define IOAPIC_IMT_SYSCALL      3
 467
 468 #define IOAPIC_IMF_CONF         0x1
 469
 470 extern void     IOAPIC_INTREN(int);
 471 extern void     IOAPIC_INTRDIS(int);
 472
 473 static int      ioapic_setvar(int, const void *);
 474 static int      ioapic_getvar(int, void *);
 475 static int      ioapic_vectorctl(int, int, int);
 476 static void     ioapic_finalize(void);
 477 static void     ioapic_cleanup(void);
 478 static void     ioapic_setdefault(void);
 479 static void     ioapic_stabilize(void);
 480 static void     ioapic_initmap(void);
 481 static void     ioapic_intr_config(int, enum intr_trigger, enum intr_polarity);
 482
 483 static int      ioapic_imcr_present;
 484
 485 struct machintr_abi MachIntrABI_IOAPIC = {
 486         MACHINTR_IOAPIC,
 487         .intrdis        = IOAPIC_INTRDIS,
 488         .intren         = IOAPIC_INTREN,
 489         .vectorctl      = ioapic_vectorctl,
 490         .setvar         = ioapic_setvar,
 491         .getvar         = ioapic_getvar,
 492         .finalize       = ioapic_finalize,
 493         .cleanup        = ioapic_cleanup,
 494         .setdefault     = ioapic_setdefault,
 495         .stabilize      = ioapic_stabilize,
 496         .initmap        = ioapic_initmap,
 497         .intr_config    = ioapic_intr_config
 498 };
 499
 500 static int
 501 ioapic_setvar(int varid, const void *buf)
 502 {
 503         int error = 0;
 504
 505         switch(varid) {
 506         case MACHINTR_VAR_IMCR_PRESENT:
 507                 ioapic_imcr_present = *(const int *)buf;
 508                 break;
 509
 510         default:
 511                 error = ENOENT;
 512                 break;
 513         }
 514         return error;
 515 }
 516
 517 static int
 518 ioapic_getvar(int varid, void *buf)
 519 {
 520         int error = 0;
 521
 522         switch(varid) {
 523         case MACHINTR_VAR_IMCR_PRESENT:
 524                 *(int *)buf = ioapic_imcr_present;
 525                 break;
 526
 527         default:
 528                 error = ENOENT;
 529                 break;
 530         }
 531         return error;
 532 }
 533
 534 /*
 535  * Called from ICU's finalize if I/O APIC is enabled, after BSP's LAPIC
 536  * is initialized; some of the BSP's LAPIC configuration are adjusted.
 537  *
 538  * - disable 'pic mode'.
 539  * - disable 'virtual wire mode'.
 540  * - switch MachIntrABI
 541  * - enable NMI.
 542  */
 543 static void
 544 ioapic_finalize(void)
 545 {
 546         register_t ef;
 547         uint32_t temp;
 548
 549         KKASSERT(MachIntrABI.type == MACHINTR_ICU);
 550         KKASSERT(apic_io_enable);
 551
 552         /*
 553          * If an IMCR is present, program bit 0 to disconnect the 8259
 554          * from the BSP.  The 8259 may still be connected to LINT0 on
 555          * the BSP's LAPIC.
 556          */
 557         if (ioapic_imcr_present) {
 558                 outb(0x22, 0x70);       /* select IMCR */
 559                 outb(0x23, 0x01);       /* disconnect 8259 */
 560         }
 561
 562         /*
 563          * Setup LINT0 (the 8259 'virtual wire' connection).  We
 564          * mask the interrupt, completing the disconnection of the
 565          * 8259.
 566          */
 567         temp = lapic->lvt_lint0;
 568         temp |= APIC_LVT_MASKED;
 569         lapic->lvt_lint0 = temp;
 570
 571         crit_enter();
 572
 573         ef = read_rflags();
 574         cpu_disable_intr();
 575
 576         /*
 577          * 8259 is completely disconnected; switch to IOAPIC MachIntrABI
 578          * and reconfigure the default IDT entries.
 579          */
 580         MachIntrABI = MachIntrABI_IOAPIC;
 581         MachIntrABI.setdefault();
 582
 583         write_rflags(ef);
 584
 585         MachIntrABI.cleanup();
 586
 587         crit_exit();
 588
 589         /*
 590          * Setup LINT1 to handle an NMI
 591          */
 592         temp = lapic->lvt_lint1;
 593         temp &= ~APIC_LVT_MASKED;
 594         lapic->lvt_lint1 = temp;
 595
 596         if (bootverbose)
 597                 apic_dump("ioapic_finalize()");
 598 }
 599
 600 /*
 601  * This routine is called after physical interrupts are enabled but before
 602  * the critical section is released.  We need to clean out any interrupts
 603  * that had already been posted to the cpu.
 604  */
 605 static void
 606 ioapic_cleanup(void)
 607 {
 608         bzero(mdcpu->gd_ipending, sizeof(mdcpu->gd_ipending));
 609 }
 610
 611 /* Must never be called */
 612 static void
 613 ioapic_stabilize(void)
 614 {
 615         panic("ioapic_stabilize is called\n");
 616 }
 617
 618 static int
 619 ioapic_vectorctl(int op, int intr, int flags)
 620 {
 621         int error;
 622         int vector;
 623         int select;
 624         uint32_t value;
 625         register_t ef;
 626
 627         if (intr < 0 || intr >= IOAPIC_HWI_VECTORS ||
 628             intr == IOAPIC_HWI_SYSCALL)
 629                 return EINVAL;
 630
 631         ef = read_rflags();
 632         cpu_disable_intr();
 633         error = 0;
 634
 635         switch(op) {
 636         case MACHINTR_VECTOR_SETUP:
 637                 vector = IDT_OFFSET + intr;
 638                 setidt(vector, ioapic_intr[intr], SDT_SYSIGT, SEL_KPL, 0);
 639
 640                 /*
 641                  * Now reprogram the vector in the IO APIC.  In order to avoid
 642                  * losing an EOI for a level interrupt, which is vector based,
 643                  * make sure that the IO APIC is programmed for edge-triggering
 644                  * first, then reprogrammed with the new vector.  This should
 645                  * clear the IRR bit.
 646                  */
 647                 if (int_to_apicintpin[intr].ioapic >= 0) {
 648                         imen_lock();
 649
 650                         select = int_to_apicintpin[intr].redirindex;
 651                         value = ioapic_read(int_to_apicintpin[intr].apic_address,
 652                                             select);
 653                         value |= IOART_INTMSET;
 654
 655                         ioapic_write(int_to_apicintpin[intr].apic_address,
 656                                      select, (value & ~APIC_TRIGMOD_MASK));
 657                         ioapic_write(int_to_apicintpin[intr].apic_address,
 658                                      select, (value & ~IOART_INTVEC) | vector);
 659
 660                         imen_unlock();
 661                 }
 662
 663                 machintr_intren(intr);
 664                 break;
 665
 666         case MACHINTR_VECTOR_TEARDOWN:
 667                 /*
 668                  * Teardown an interrupt vector.  The vector should already be
 669                  * installed in the cpu's IDT, but make sure.
 670                  */
 671                 machintr_intrdis(intr);
 672
 673                 vector = IDT_OFFSET + intr;
 674                 setidt(vector, ioapic_intr[intr], SDT_SYSIGT, SEL_KPL, 0);
 675
 676                 /*
 677                  * In order to avoid losing an EOI for a level interrupt, which
 678                  * is vector based, make sure that the IO APIC is programmed for
 679                  * edge-triggering first, then reprogrammed with the new vector.
 680                  * This should clear the IRR bit.
 681                  */
 682                 if (int_to_apicintpin[intr].ioapic >= 0) {
 683                         imen_lock();
 684
 685                         select = int_to_apicintpin[intr].redirindex;
 686                         value = ioapic_read(int_to_apicintpin[intr].apic_address,
 687                                             select);
 688
 689                         ioapic_write(int_to_apicintpin[intr].apic_address,
 690                                      select, (value & ~APIC_TRIGMOD_MASK));
 691                         ioapic_write(int_to_apicintpin[intr].apic_address,
 692                                      select, (value & ~IOART_INTVEC) | vector);
 693
 694                         imen_unlock();
 695                 }
 696                 break;
 697
 698         default:
 699                 error = EOPNOTSUPP;
 700                 break;
 701         }
 702
 703         write_rflags(ef);
 704         return error;
 705 }
 706
 707 static void
 708 ioapic_setdefault(void)
 709 {
 710         int intr;
 711
 712         for (intr = 0; intr < IOAPIC_HWI_VECTORS; ++intr) {
 713                 if (intr == IOAPIC_HWI_SYSCALL)
 714                         continue;
 715                 setidt(IDT_OFFSET + intr, ioapic_intr[intr], SDT_SYSIGT,
 716                        SEL_KPL, 0);
 717         }
 718 }
 719
 720 static void
 721 ioapic_initmap(void)
 722 {
 723         int i;
 724
 725         for (i = 0; i < IOAPIC_HWI_VECTORS; ++i)
 726                 ioapic_irqmaps[i].im_gsi = -1;
 727         ioapic_irqmaps[IOAPIC_HWI_SYSCALL].im_type = IOAPIC_IMT_SYSCALL;
 728 }
 729
 730 void
 731 ioapic_abi_set_irqmap(int irq, int gsi, enum intr_trigger trig,
 732     enum intr_polarity pola)
 733 {
 734         struct apic_intmapinfo *info;
 735         struct ioapic_irqmap *map;
 736         void *ioaddr;
 737         int pin;
 738
 739         KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
 740         KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
 741         KKASSERT((trig == INTR_TRIGGER_EDGE && pola == INTR_POLARITY_HIGH) ||
 742                  (trig == INTR_TRIGGER_LEVEL && pola == INTR_POLARITY_LOW));
 743
 744         KKASSERT(irq >= 0 && irq < IOAPIC_HWI_VECTORS);
 745         map = &ioapic_irqmaps[irq];
 746
 747         KKASSERT(map->im_type == IOAPIC_IMT_UNUSED);
 748         map->im_type = IOAPIC_IMT_LINE;
 749
 750         map->im_gsi = gsi;
 751         map->im_trig = trig;
 752         map->im_pola = pola;
 753
 754         if (bootverbose) {
 755                 kprintf("IOAPIC: irq %d -> gsi %d %c\n", irq, map->im_gsi,
 756                         map->im_trig == INTR_TRIGGER_LEVEL ? 'L' : 'E');
 757         }
 758
 759         pin = ioapic_gsi_pin(map->im_gsi);
 760         ioaddr = ioapic_gsi_ioaddr(map->im_gsi);
 761
 762         info = &int_to_apicintpin[irq];
 763
 764         info->ioapic = 0; /* XXX unused */
 765         info->int_pin = pin;
 766         info->apic_address = ioaddr;
 767         info->redirindex = IOAPIC_REDTBL + (2 * pin);
 768         info->flags = IOAPIC_IM_FLAG_MASKED;
 769         if (map->im_trig == INTR_TRIGGER_LEVEL)
 770                 info->flags |= IOAPIC_IM_FLAG_LEVEL;
 771
 772         ioapic_pin_setup(ioaddr, pin, IDT_OFFSET + irq,
 773             map->im_trig, map->im_pola);
 774 }
 775
 776 static void
 777 ioapic_intr_config(int irq, enum intr_trigger trig, enum intr_polarity pola)
 778 {
 779         struct apic_intmapinfo *info;
 780         struct ioapic_irqmap *map;
 781         void *ioaddr;
 782         int pin;
 783
 784         if (ioapic_use_old)
 785                 return;
 786
 787         KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
 788         KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
 789         KKASSERT((trig == INTR_TRIGGER_EDGE && pola == INTR_POLARITY_HIGH) ||
 790                  (trig == INTR_TRIGGER_LEVEL && pola == INTR_POLARITY_LOW));
 791
 792         KKASSERT(irq >= 0 && irq < IOAPIC_HWI_VECTORS);
 793         map = &ioapic_irqmaps[irq];
 794
 795         KKASSERT(map->im_type == IOAPIC_IMT_LINE);
 796
 797         if (map->im_flags & IOAPIC_IMF_CONF) {
 798                 if (trig != map->im_trig) {
 799                         panic("ioapic_intr_config: trig %c -> %c\n",
 800                               map->im_trig == INTR_TRIGGER_EDGE ? 'E' : 'L',
 801                               trig == INTR_TRIGGER_EDGE ? 'E' : 'L');
 802                 }
 803                 if (pola != map->im_pola) {
 804                         panic("ioapic_intr_config: pola %s -> %s\n",
 805                               map->im_pola == INTR_POLARITY_HIGH ? "hi" : "lo",
 806                               pola == INTR_POLARITY_HIGH ? "hi" : "lo");
 807                 }
 808                 return;
 809         }
 810         map->im_flags |= IOAPIC_IMF_CONF;
 811
 812         if (trig == map->im_trig && pola == map->im_pola)
 813                 return;
 814
 815         if (bootverbose) {
 816                 kprintf("IOAPIC: irq %d, gsi %d %c -> %c\n", irq, map->im_gsi,
 817                         map->im_trig == INTR_TRIGGER_LEVEL ? 'L' : 'E',
 818                         trig == INTR_TRIGGER_LEVEL ? 'L' : 'E');
 819         }
 820
 821         map->im_trig = trig;
 822         map->im_pola = pola;
 823
 824         pin = ioapic_gsi_pin(map->im_gsi);
 825         ioaddr = ioapic_gsi_ioaddr(map->im_gsi);
 826
 827         info = &int_to_apicintpin[irq];
 828
 829         info->flags &= ~IOAPIC_IM_FLAG_LEVEL;
 830         if (map->im_trig == INTR_TRIGGER_LEVEL)
 831                 info->flags |= IOAPIC_IM_FLAG_LEVEL;
 832
 833         ioapic_pin_setup(ioaddr, pin, IDT_OFFSET + irq,
 834             map->im_trig, map->im_pola);
 835 }
 836
 837 #endif  /* SMP */