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 #include <sys/thread2.h>
  50
  51 #include <machine/smp.h>
  52 #include <machine/segments.h>
  53 #include <machine/md_var.h>
  54 #include <machine/intr_machdep.h>
  55 #include <machine/globaldata.h>
  56
  57 #include <machine_base/isa/isa_intr.h>
  58 #include <machine_base/icu/icu.h>
  59 #include <machine_base/icu/icu_var.h>
  60 #include <machine_base/apic/ioapic.h>
  61 #include <machine_base/apic/ioapic_abi.h>
  62 #include <machine_base/apic/ioapic_ipl.h>
  63 #include <machine_base/apic/apicreg.h>
  64
  65 #include <dev/acpica5/acpi_sci_var.h>
  66
  67 #define IOAPIC_HWI_VECTORS      IDT_HWI_VECTORS
  68
  69 extern inthand_t
  70         IDTVEC(ioapic_intr0),
  71         IDTVEC(ioapic_intr1),
  72         IDTVEC(ioapic_intr2),
  73         IDTVEC(ioapic_intr3),
  74         IDTVEC(ioapic_intr4),
  75         IDTVEC(ioapic_intr5),
  76         IDTVEC(ioapic_intr6),
  77         IDTVEC(ioapic_intr7),
  78         IDTVEC(ioapic_intr8),
  79         IDTVEC(ioapic_intr9),
  80         IDTVEC(ioapic_intr10),
  81         IDTVEC(ioapic_intr11),
  82         IDTVEC(ioapic_intr12),
  83         IDTVEC(ioapic_intr13),
  84         IDTVEC(ioapic_intr14),
  85         IDTVEC(ioapic_intr15),
  86         IDTVEC(ioapic_intr16),
  87         IDTVEC(ioapic_intr17),
  88         IDTVEC(ioapic_intr18),
  89         IDTVEC(ioapic_intr19),
  90         IDTVEC(ioapic_intr20),
  91         IDTVEC(ioapic_intr21),
  92         IDTVEC(ioapic_intr22),
  93         IDTVEC(ioapic_intr23),
  94         IDTVEC(ioapic_intr24),
  95         IDTVEC(ioapic_intr25),
  96         IDTVEC(ioapic_intr26),
  97         IDTVEC(ioapic_intr27),
  98         IDTVEC(ioapic_intr28),
  99         IDTVEC(ioapic_intr29),
 100         IDTVEC(ioapic_intr30),
 101         IDTVEC(ioapic_intr31),
 102         IDTVEC(ioapic_intr32),
 103         IDTVEC(ioapic_intr33),
 104         IDTVEC(ioapic_intr34),
 105         IDTVEC(ioapic_intr35),
 106         IDTVEC(ioapic_intr36),
 107         IDTVEC(ioapic_intr37),
 108         IDTVEC(ioapic_intr38),
 109         IDTVEC(ioapic_intr39),
 110         IDTVEC(ioapic_intr40),
 111         IDTVEC(ioapic_intr41),
 112         IDTVEC(ioapic_intr42),
 113         IDTVEC(ioapic_intr43),
 114         IDTVEC(ioapic_intr44),
 115         IDTVEC(ioapic_intr45),
 116         IDTVEC(ioapic_intr46),
 117         IDTVEC(ioapic_intr47),
 118         IDTVEC(ioapic_intr48),
 119         IDTVEC(ioapic_intr49),
 120         IDTVEC(ioapic_intr50),
 121         IDTVEC(ioapic_intr51),
 122         IDTVEC(ioapic_intr52),
 123         IDTVEC(ioapic_intr53),
 124         IDTVEC(ioapic_intr54),
 125         IDTVEC(ioapic_intr55),
 126         IDTVEC(ioapic_intr56),
 127         IDTVEC(ioapic_intr57),
 128         IDTVEC(ioapic_intr58),
 129         IDTVEC(ioapic_intr59),
 130         IDTVEC(ioapic_intr60),
 131         IDTVEC(ioapic_intr61),
 132         IDTVEC(ioapic_intr62),
 133         IDTVEC(ioapic_intr63),
 134         IDTVEC(ioapic_intr64),
 135         IDTVEC(ioapic_intr65),
 136         IDTVEC(ioapic_intr66),
 137         IDTVEC(ioapic_intr67),
 138         IDTVEC(ioapic_intr68),
 139         IDTVEC(ioapic_intr69),
 140         IDTVEC(ioapic_intr70),
 141         IDTVEC(ioapic_intr71),
 142         IDTVEC(ioapic_intr72),
 143         IDTVEC(ioapic_intr73),
 144         IDTVEC(ioapic_intr74),
 145         IDTVEC(ioapic_intr75),
 146         IDTVEC(ioapic_intr76),
 147         IDTVEC(ioapic_intr77),
 148         IDTVEC(ioapic_intr78),
 149         IDTVEC(ioapic_intr79),
 150         IDTVEC(ioapic_intr80),
 151         IDTVEC(ioapic_intr81),
 152         IDTVEC(ioapic_intr82),
 153         IDTVEC(ioapic_intr83),
 154         IDTVEC(ioapic_intr84),
 155         IDTVEC(ioapic_intr85),
 156         IDTVEC(ioapic_intr86),
 157         IDTVEC(ioapic_intr87),
 158         IDTVEC(ioapic_intr88),
 159         IDTVEC(ioapic_intr89),
 160         IDTVEC(ioapic_intr90),
 161         IDTVEC(ioapic_intr91),
 162         IDTVEC(ioapic_intr92),
 163         IDTVEC(ioapic_intr93),
 164         IDTVEC(ioapic_intr94),
 165         IDTVEC(ioapic_intr95),
 166         IDTVEC(ioapic_intr96),
 167         IDTVEC(ioapic_intr97),
 168         IDTVEC(ioapic_intr98),
 169         IDTVEC(ioapic_intr99),
 170         IDTVEC(ioapic_intr100),
 171         IDTVEC(ioapic_intr101),
 172         IDTVEC(ioapic_intr102),
 173         IDTVEC(ioapic_intr103),
 174         IDTVEC(ioapic_intr104),
 175         IDTVEC(ioapic_intr105),
 176         IDTVEC(ioapic_intr106),
 177         IDTVEC(ioapic_intr107),
 178         IDTVEC(ioapic_intr108),
 179         IDTVEC(ioapic_intr109),
 180         IDTVEC(ioapic_intr110),
 181         IDTVEC(ioapic_intr111),
 182         IDTVEC(ioapic_intr112),
 183         IDTVEC(ioapic_intr113),
 184         IDTVEC(ioapic_intr114),
 185         IDTVEC(ioapic_intr115),
 186         IDTVEC(ioapic_intr116),
 187         IDTVEC(ioapic_intr117),
 188         IDTVEC(ioapic_intr118),
 189         IDTVEC(ioapic_intr119),
 190         IDTVEC(ioapic_intr120),
 191         IDTVEC(ioapic_intr121),
 192         IDTVEC(ioapic_intr122),
 193         IDTVEC(ioapic_intr123),
 194         IDTVEC(ioapic_intr124),
 195         IDTVEC(ioapic_intr125),
 196         IDTVEC(ioapic_intr126),
 197         IDTVEC(ioapic_intr127),
 198         IDTVEC(ioapic_intr128),
 199         IDTVEC(ioapic_intr129),
 200         IDTVEC(ioapic_intr130),
 201         IDTVEC(ioapic_intr131),
 202         IDTVEC(ioapic_intr132),
 203         IDTVEC(ioapic_intr133),
 204         IDTVEC(ioapic_intr134),
 205         IDTVEC(ioapic_intr135),
 206         IDTVEC(ioapic_intr136),
 207         IDTVEC(ioapic_intr137),
 208         IDTVEC(ioapic_intr138),
 209         IDTVEC(ioapic_intr139),
 210         IDTVEC(ioapic_intr140),
 211         IDTVEC(ioapic_intr141),
 212         IDTVEC(ioapic_intr142),
 213         IDTVEC(ioapic_intr143),
 214         IDTVEC(ioapic_intr144),
 215         IDTVEC(ioapic_intr145),
 216         IDTVEC(ioapic_intr146),
 217         IDTVEC(ioapic_intr147),
 218         IDTVEC(ioapic_intr148),
 219         IDTVEC(ioapic_intr149),
 220         IDTVEC(ioapic_intr150),
 221         IDTVEC(ioapic_intr151),
 222         IDTVEC(ioapic_intr152),
 223         IDTVEC(ioapic_intr153),
 224         IDTVEC(ioapic_intr154),
 225         IDTVEC(ioapic_intr155),
 226         IDTVEC(ioapic_intr156),
 227         IDTVEC(ioapic_intr157),
 228         IDTVEC(ioapic_intr158),
 229         IDTVEC(ioapic_intr159),
 230         IDTVEC(ioapic_intr160),
 231         IDTVEC(ioapic_intr161),
 232         IDTVEC(ioapic_intr162),
 233         IDTVEC(ioapic_intr163),
 234         IDTVEC(ioapic_intr164),
 235         IDTVEC(ioapic_intr165),
 236         IDTVEC(ioapic_intr166),
 237         IDTVEC(ioapic_intr167),
 238         IDTVEC(ioapic_intr168),
 239         IDTVEC(ioapic_intr169),
 240         IDTVEC(ioapic_intr170),
 241         IDTVEC(ioapic_intr171),
 242         IDTVEC(ioapic_intr172),
 243         IDTVEC(ioapic_intr173),
 244         IDTVEC(ioapic_intr174),
 245         IDTVEC(ioapic_intr175),
 246         IDTVEC(ioapic_intr176),
 247         IDTVEC(ioapic_intr177),
 248         IDTVEC(ioapic_intr178),
 249         IDTVEC(ioapic_intr179),
 250         IDTVEC(ioapic_intr180),
 251         IDTVEC(ioapic_intr181),
 252         IDTVEC(ioapic_intr182),
 253         IDTVEC(ioapic_intr183),
 254         IDTVEC(ioapic_intr184),
 255         IDTVEC(ioapic_intr185),
 256         IDTVEC(ioapic_intr186),
 257         IDTVEC(ioapic_intr187),
 258         IDTVEC(ioapic_intr188),
 259         IDTVEC(ioapic_intr189),
 260         IDTVEC(ioapic_intr190),
 261         IDTVEC(ioapic_intr191);
 262
 263 static inthand_t *ioapic_intr[IOAPIC_HWI_VECTORS] = {
 264         &IDTVEC(ioapic_intr0),
 265         &IDTVEC(ioapic_intr1),
 266         &IDTVEC(ioapic_intr2),
 267         &IDTVEC(ioapic_intr3),
 268         &IDTVEC(ioapic_intr4),
 269         &IDTVEC(ioapic_intr5),
 270         &IDTVEC(ioapic_intr6),
 271         &IDTVEC(ioapic_intr7),
 272         &IDTVEC(ioapic_intr8),
 273         &IDTVEC(ioapic_intr9),
 274         &IDTVEC(ioapic_intr10),
 275         &IDTVEC(ioapic_intr11),
 276         &IDTVEC(ioapic_intr12),
 277         &IDTVEC(ioapic_intr13),
 278         &IDTVEC(ioapic_intr14),
 279         &IDTVEC(ioapic_intr15),
 280         &IDTVEC(ioapic_intr16),
 281         &IDTVEC(ioapic_intr17),
 282         &IDTVEC(ioapic_intr18),
 283         &IDTVEC(ioapic_intr19),
 284         &IDTVEC(ioapic_intr20),
 285         &IDTVEC(ioapic_intr21),
 286         &IDTVEC(ioapic_intr22),
 287         &IDTVEC(ioapic_intr23),
 288         &IDTVEC(ioapic_intr24),
 289         &IDTVEC(ioapic_intr25),
 290         &IDTVEC(ioapic_intr26),
 291         &IDTVEC(ioapic_intr27),
 292         &IDTVEC(ioapic_intr28),
 293         &IDTVEC(ioapic_intr29),
 294         &IDTVEC(ioapic_intr30),
 295         &IDTVEC(ioapic_intr31),
 296         &IDTVEC(ioapic_intr32),
 297         &IDTVEC(ioapic_intr33),
 298         &IDTVEC(ioapic_intr34),
 299         &IDTVEC(ioapic_intr35),
 300         &IDTVEC(ioapic_intr36),
 301         &IDTVEC(ioapic_intr37),
 302         &IDTVEC(ioapic_intr38),
 303         &IDTVEC(ioapic_intr39),
 304         &IDTVEC(ioapic_intr40),
 305         &IDTVEC(ioapic_intr41),
 306         &IDTVEC(ioapic_intr42),
 307         &IDTVEC(ioapic_intr43),
 308         &IDTVEC(ioapic_intr44),
 309         &IDTVEC(ioapic_intr45),
 310         &IDTVEC(ioapic_intr46),
 311         &IDTVEC(ioapic_intr47),
 312         &IDTVEC(ioapic_intr48),
 313         &IDTVEC(ioapic_intr49),
 314         &IDTVEC(ioapic_intr50),
 315         &IDTVEC(ioapic_intr51),
 316         &IDTVEC(ioapic_intr52),
 317         &IDTVEC(ioapic_intr53),
 318         &IDTVEC(ioapic_intr54),
 319         &IDTVEC(ioapic_intr55),
 320         &IDTVEC(ioapic_intr56),
 321         &IDTVEC(ioapic_intr57),
 322         &IDTVEC(ioapic_intr58),
 323         &IDTVEC(ioapic_intr59),
 324         &IDTVEC(ioapic_intr60),
 325         &IDTVEC(ioapic_intr61),
 326         &IDTVEC(ioapic_intr62),
 327         &IDTVEC(ioapic_intr63),
 328         &IDTVEC(ioapic_intr64),
 329         &IDTVEC(ioapic_intr65),
 330         &IDTVEC(ioapic_intr66),
 331         &IDTVEC(ioapic_intr67),
 332         &IDTVEC(ioapic_intr68),
 333         &IDTVEC(ioapic_intr69),
 334         &IDTVEC(ioapic_intr70),
 335         &IDTVEC(ioapic_intr71),
 336         &IDTVEC(ioapic_intr72),
 337         &IDTVEC(ioapic_intr73),
 338         &IDTVEC(ioapic_intr74),
 339         &IDTVEC(ioapic_intr75),
 340         &IDTVEC(ioapic_intr76),
 341         &IDTVEC(ioapic_intr77),
 342         &IDTVEC(ioapic_intr78),
 343         &IDTVEC(ioapic_intr79),
 344         &IDTVEC(ioapic_intr80),
 345         &IDTVEC(ioapic_intr81),
 346         &IDTVEC(ioapic_intr82),
 347         &IDTVEC(ioapic_intr83),
 348         &IDTVEC(ioapic_intr84),
 349         &IDTVEC(ioapic_intr85),
 350         &IDTVEC(ioapic_intr86),
 351         &IDTVEC(ioapic_intr87),
 352         &IDTVEC(ioapic_intr88),
 353         &IDTVEC(ioapic_intr89),
 354         &IDTVEC(ioapic_intr90),
 355         &IDTVEC(ioapic_intr91),
 356         &IDTVEC(ioapic_intr92),
 357         &IDTVEC(ioapic_intr93),
 358         &IDTVEC(ioapic_intr94),
 359         &IDTVEC(ioapic_intr95),
 360         &IDTVEC(ioapic_intr96),
 361         &IDTVEC(ioapic_intr97),
 362         &IDTVEC(ioapic_intr98),
 363         &IDTVEC(ioapic_intr99),
 364         &IDTVEC(ioapic_intr100),
 365         &IDTVEC(ioapic_intr101),
 366         &IDTVEC(ioapic_intr102),
 367         &IDTVEC(ioapic_intr103),
 368         &IDTVEC(ioapic_intr104),
 369         &IDTVEC(ioapic_intr105),
 370         &IDTVEC(ioapic_intr106),
 371         &IDTVEC(ioapic_intr107),
 372         &IDTVEC(ioapic_intr108),
 373         &IDTVEC(ioapic_intr109),
 374         &IDTVEC(ioapic_intr110),
 375         &IDTVEC(ioapic_intr111),
 376         &IDTVEC(ioapic_intr112),
 377         &IDTVEC(ioapic_intr113),
 378         &IDTVEC(ioapic_intr114),
 379         &IDTVEC(ioapic_intr115),
 380         &IDTVEC(ioapic_intr116),
 381         &IDTVEC(ioapic_intr117),
 382         &IDTVEC(ioapic_intr118),
 383         &IDTVEC(ioapic_intr119),
 384         &IDTVEC(ioapic_intr120),
 385         &IDTVEC(ioapic_intr121),
 386         &IDTVEC(ioapic_intr122),
 387         &IDTVEC(ioapic_intr123),
 388         &IDTVEC(ioapic_intr124),
 389         &IDTVEC(ioapic_intr125),
 390         &IDTVEC(ioapic_intr126),
 391         &IDTVEC(ioapic_intr127),
 392         &IDTVEC(ioapic_intr128),
 393         &IDTVEC(ioapic_intr129),
 394         &IDTVEC(ioapic_intr130),
 395         &IDTVEC(ioapic_intr131),
 396         &IDTVEC(ioapic_intr132),
 397         &IDTVEC(ioapic_intr133),
 398         &IDTVEC(ioapic_intr134),
 399         &IDTVEC(ioapic_intr135),
 400         &IDTVEC(ioapic_intr136),
 401         &IDTVEC(ioapic_intr137),
 402         &IDTVEC(ioapic_intr138),
 403         &IDTVEC(ioapic_intr139),
 404         &IDTVEC(ioapic_intr140),
 405         &IDTVEC(ioapic_intr141),
 406         &IDTVEC(ioapic_intr142),
 407         &IDTVEC(ioapic_intr143),
 408         &IDTVEC(ioapic_intr144),
 409         &IDTVEC(ioapic_intr145),
 410         &IDTVEC(ioapic_intr146),
 411         &IDTVEC(ioapic_intr147),
 412         &IDTVEC(ioapic_intr148),
 413         &IDTVEC(ioapic_intr149),
 414         &IDTVEC(ioapic_intr150),
 415         &IDTVEC(ioapic_intr151),
 416         &IDTVEC(ioapic_intr152),
 417         &IDTVEC(ioapic_intr153),
 418         &IDTVEC(ioapic_intr154),
 419         &IDTVEC(ioapic_intr155),
 420         &IDTVEC(ioapic_intr156),
 421         &IDTVEC(ioapic_intr157),
 422         &IDTVEC(ioapic_intr158),
 423         &IDTVEC(ioapic_intr159),
 424         &IDTVEC(ioapic_intr160),
 425         &IDTVEC(ioapic_intr161),
 426         &IDTVEC(ioapic_intr162),
 427         &IDTVEC(ioapic_intr163),
 428         &IDTVEC(ioapic_intr164),
 429         &IDTVEC(ioapic_intr165),
 430         &IDTVEC(ioapic_intr166),
 431         &IDTVEC(ioapic_intr167),
 432         &IDTVEC(ioapic_intr168),
 433         &IDTVEC(ioapic_intr169),
 434         &IDTVEC(ioapic_intr170),
 435         &IDTVEC(ioapic_intr171),
 436         &IDTVEC(ioapic_intr172),
 437         &IDTVEC(ioapic_intr173),
 438         &IDTVEC(ioapic_intr174),
 439         &IDTVEC(ioapic_intr175),
 440         &IDTVEC(ioapic_intr176),
 441         &IDTVEC(ioapic_intr177),
 442         &IDTVEC(ioapic_intr178),
 443         &IDTVEC(ioapic_intr179),
 444         &IDTVEC(ioapic_intr180),
 445         &IDTVEC(ioapic_intr181),
 446         &IDTVEC(ioapic_intr182),
 447         &IDTVEC(ioapic_intr183),
 448         &IDTVEC(ioapic_intr184),
 449         &IDTVEC(ioapic_intr185),
 450         &IDTVEC(ioapic_intr186),
 451         &IDTVEC(ioapic_intr187),
 452         &IDTVEC(ioapic_intr188),
 453         &IDTVEC(ioapic_intr189),
 454         &IDTVEC(ioapic_intr190),
 455         &IDTVEC(ioapic_intr191)
 456 };
 457
 458 #define IOAPIC_HWI_SYSCALL      (IDT_OFFSET_SYSCALL - IDT_OFFSET)
 459
 460 static struct ioapic_irqmap {
 461         int                     im_type;        /* IOAPIC_IMT_ */
 462         enum intr_trigger       im_trig;
 463         enum intr_polarity      im_pola;
 464         int                     im_gsi;
 465         uint32_t                im_flags;       /* IOAPIC_IMF_ */
 466 } ioapic_irqmaps[MAXCPU][IOAPIC_HWI_VECTORS];
 467
 468 #define IOAPIC_IMT_UNUSED       0
 469 #define IOAPIC_IMT_RESERVED     1
 470 #define IOAPIC_IMT_LINE         2
 471 #define IOAPIC_IMT_SYSCALL      3
 472
 473 #define IOAPIC_IMF_CONF         0x1
 474
 475 extern void     IOAPIC_INTREN(int);
 476 extern void     IOAPIC_INTRDIS(int);
 477
 478 extern int      imcr_present;
 479
 480 static void     ioapic_abi_intr_enable(int);
 481 static void     ioapic_abi_intr_disable(int);
 482 static void     ioapic_abi_intr_setup(int, int);
 483 static void     ioapic_abi_intr_teardown(int);
 484 static void     ioapic_abi_intr_config(int,
 485                     enum intr_trigger, enum intr_polarity);
 486 static int      ioapic_abi_intr_cpuid(int);
 487
 488 static void     ioapic_abi_finalize(void);
 489 static void     ioapic_abi_cleanup(void);
 490 static void     ioapic_abi_setdefault(void);
 491 static void     ioapic_abi_stabilize(void);
 492 static void     ioapic_abi_initmap(void);
 493
 494 static int      ioapic_abi_gsi_cpuid(int, int);
 495
 496 struct machintr_abi MachIntrABI_IOAPIC = {
 497         MACHINTR_IOAPIC,
 498         .intr_disable   = ioapic_abi_intr_disable,
 499         .intr_enable    = ioapic_abi_intr_enable,
 500         .intr_setup     = ioapic_abi_intr_setup,
 501         .intr_teardown  = ioapic_abi_intr_teardown,
 502         .intr_config    = ioapic_abi_intr_config,
 503         .intr_cpuid     = ioapic_abi_intr_cpuid,
 504
 505         .finalize       = ioapic_abi_finalize,
 506         .cleanup        = ioapic_abi_cleanup,
 507         .setdefault     = ioapic_abi_setdefault,
 508         .stabilize      = ioapic_abi_stabilize,
 509         .initmap        = ioapic_abi_initmap
 510 };
 511
 512 static int      ioapic_abi_extint_irq = -1;
 513 static int      ioapic_abi_line_irq_max;
 514 static int      ioapic_abi_gsi_balance;
 515
 516 struct ioapic_irqinfo   ioapic_irqs[IOAPIC_HWI_VECTORS];
 517
 518 static void
 519 ioapic_abi_intr_enable(int irq)
 520 {
 521         if (irq < 0 || irq >= IOAPIC_HWI_VECTORS) {
 522                 kprintf("ioapic_abi_intr_enable invalid irq %d\n", irq);
 523                 return;
 524         }
 525         IOAPIC_INTREN(irq);
 526 }
 527
 528 static void
 529 ioapic_abi_intr_disable(int irq)
 530 {
 531         if (irq < 0 || irq >= IOAPIC_HWI_VECTORS) {
 532                 kprintf("ioapic_abi_intr_disable invalid irq %d\n", irq);
 533                 return;
 534         }
 535         IOAPIC_INTRDIS(irq);
 536 }
 537
 538 static void
 539 ioapic_abi_finalize(void)
 540 {
 541         KKASSERT(MachIntrABI.type == MACHINTR_IOAPIC);
 542         KKASSERT(ioapic_enable);
 543
 544         /*
 545          * If an IMCR is present, program bit 0 to disconnect the 8259
 546          * from the BSP.
 547          */
 548         if (imcr_present) {
 549                 outb(0x22, 0x70);       /* select IMCR */
 550                 outb(0x23, 0x01);       /* disconnect 8259 */
 551         }
 552 }
 553
 554 /*
 555  * This routine is called after physical interrupts are enabled but before
 556  * the critical section is released.  We need to clean out any interrupts
 557  * that had already been posted to the cpu.
 558  */
 559 static void
 560 ioapic_abi_cleanup(void)
 561 {
 562         bzero(mdcpu->gd_ipending, sizeof(mdcpu->gd_ipending));
 563 }
 564
 565 /* Must never be called */
 566 static void
 567 ioapic_abi_stabilize(void)
 568 {
 569         panic("ioapic_stabilize is called\n");
 570 }
 571
 572 static void
 573 ioapic_abi_intr_setup(int intr, int flags)
 574 {
 575         int vector, select;
 576         uint32_t value;
 577         register_t ef;
 578
 579         KKASSERT(intr >= 0 && intr < IOAPIC_HWI_VECTORS &&
 580             intr != IOAPIC_HWI_SYSCALL);
 581         KKASSERT(ioapic_irqs[intr].io_addr != NULL);
 582
 583         ef = read_rflags();
 584         cpu_disable_intr();
 585
 586         vector = IDT_OFFSET + intr;
 587
 588         /*
 589          * Now reprogram the vector in the IO APIC.  In order to avoid
 590          * losing an EOI for a level interrupt, which is vector based,
 591          * make sure that the IO APIC is programmed for edge-triggering
 592          * first, then reprogrammed with the new vector.  This should
 593          * clear the IRR bit.
 594          */
 595         imen_lock();
 596
 597         select = ioapic_irqs[intr].io_idx;
 598         value = ioapic_read(ioapic_irqs[intr].io_addr, select);
 599         value |= IOART_INTMSET;
 600
 601         ioapic_write(ioapic_irqs[intr].io_addr, select,
 602             (value & ~APIC_TRIGMOD_MASK));
 603         ioapic_write(ioapic_irqs[intr].io_addr, select,
 604             (value & ~IOART_INTVEC) | vector);
 605
 606         imen_unlock();
 607
 608         machintr_intr_enable(intr);
 609
 610         write_rflags(ef);
 611 }
 612
 613 static void
 614 ioapic_abi_intr_teardown(int intr)
 615 {
 616         int vector, select;
 617         uint32_t value;
 618         register_t ef;
 619
 620         KKASSERT(intr >= 0 && intr < IOAPIC_HWI_VECTORS &&
 621             intr != IOAPIC_HWI_SYSCALL);
 622         KKASSERT(ioapic_irqs[intr].io_addr != NULL);
 623
 624         ef = read_rflags();
 625         cpu_disable_intr();
 626
 627         /*
 628          * Teardown an interrupt vector.  The vector should already be
 629          * installed in the cpu's IDT, but make sure.
 630          */
 631         machintr_intr_disable(intr);
 632
 633         vector = IDT_OFFSET + intr;
 634
 635         /*
 636          * In order to avoid losing an EOI for a level interrupt, which
 637          * is vector based, make sure that the IO APIC is programmed for
 638          * edge-triggering first, then reprogrammed with the new vector.
 639          * This should clear the IRR bit.
 640          */
 641         imen_lock();
 642
 643         select = ioapic_irqs[intr].io_idx;
 644         value = ioapic_read(ioapic_irqs[intr].io_addr, select);
 645
 646         ioapic_write(ioapic_irqs[intr].io_addr, select,
 647             (value & ~APIC_TRIGMOD_MASK));
 648         ioapic_write(ioapic_irqs[intr].io_addr, select,
 649             (value & ~IOART_INTVEC) | vector);
 650
 651         imen_unlock();
 652
 653         write_rflags(ef);
 654 }
 655
 656 static void
 657 ioapic_abi_setdefault(void)
 658 {
 659         int intr;
 660
 661         for (intr = 0; intr < IOAPIC_HWI_VECTORS; ++intr) {
 662                 if (intr == IOAPIC_HWI_SYSCALL)
 663                         continue;
 664                 setidt(IDT_OFFSET + intr, ioapic_intr[intr], SDT_SYSIGT,
 665                        SEL_KPL, 0);
 666         }
 667 }
 668
 669 static void
 670 ioapic_abi_initmap(void)
 671 {
 672         int cpu;
 673
 674         kgetenv_int("hw.ioapic.gsi.balance", &ioapic_abi_gsi_balance);
 675
 676         /*
 677          * NOTE: ncpus is not ready yet
 678          */
 679         for (cpu = 0; cpu < MAXCPU; ++cpu) {
 680                 int i;
 681
 682                 for (i = 0; i < IOAPIC_HWI_VECTORS; ++i)
 683                         ioapic_irqmaps[cpu][i].im_gsi = -1;
 684                 ioapic_irqmaps[cpu][IOAPIC_HWI_SYSCALL].im_type =
 685                     IOAPIC_IMT_SYSCALL;
 686         }
 687 }
 688
 689 void
 690 ioapic_abi_set_irqmap(int irq, int gsi, enum intr_trigger trig,
 691     enum intr_polarity pola)
 692 {
 693         struct ioapic_irqinfo *info;
 694         struct ioapic_irqmap *map;
 695         void *ioaddr;
 696         int pin, cpuid;
 697
 698         KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
 699         KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
 700
 701         KKASSERT(irq >= 0 && irq < IOAPIC_HWI_VECTORS);
 702         if (irq > ioapic_abi_line_irq_max)
 703                 ioapic_abi_line_irq_max = irq;
 704
 705         cpuid = ioapic_abi_gsi_cpuid(irq, gsi);
 706
 707         map = &ioapic_irqmaps[cpuid][irq];
 708
 709         KKASSERT(map->im_type == IOAPIC_IMT_UNUSED);
 710         map->im_type = IOAPIC_IMT_LINE;
 711
 712         map->im_gsi = gsi;
 713         map->im_trig = trig;
 714         map->im_pola = pola;
 715
 716         if (bootverbose) {
 717                 kprintf("IOAPIC: irq %d -> gsi %d %s/%s\n",
 718                         irq, map->im_gsi,
 719                         intr_str_trigger(map->im_trig),
 720                         intr_str_polarity(map->im_pola));
 721         }
 722
 723         pin = ioapic_gsi_pin(map->im_gsi);
 724         ioaddr = ioapic_gsi_ioaddr(map->im_gsi);
 725
 726         info = &ioapic_irqs[irq];
 727
 728         imen_lock();
 729
 730         info->io_addr = ioaddr;
 731         info->io_idx = IOAPIC_REDTBL + (2 * pin);
 732         info->io_flags = IOAPIC_IRQI_FLAG_MASKED;
 733         if (map->im_trig == INTR_TRIGGER_LEVEL)
 734                 info->io_flags |= IOAPIC_IRQI_FLAG_LEVEL;
 735
 736         ioapic_pin_setup(ioaddr, pin, IDT_OFFSET + irq,
 737             map->im_trig, map->im_pola, cpuid);
 738
 739         imen_unlock();
 740 }
 741
 742 void
 743 ioapic_abi_fixup_irqmap(void)
 744 {
 745         int cpu;
 746
 747         for (cpu = 0; cpu < ncpus; ++cpu) {
 748                 int i;
 749
 750                 for (i = 0; i < ISA_IRQ_CNT; ++i) {
 751                         struct ioapic_irqmap *map = &ioapic_irqmaps[cpu][i];
 752
 753                         if (map->im_type == IOAPIC_IMT_UNUSED) {
 754                                 map->im_type = IOAPIC_IMT_RESERVED;
 755                                 if (bootverbose) {
 756                                         kprintf("IOAPIC: "
 757                                             "cpu%d irq %d reserved\n", cpu, i);
 758                                 }
 759                         }
 760                 }
 761         }
 762
 763         ioapic_abi_line_irq_max += 1;
 764         if (bootverbose)
 765                 kprintf("IOAPIC: line irq max %d\n", ioapic_abi_line_irq_max);
 766 }
 767
 768 int
 769 ioapic_abi_find_gsi(int gsi, enum intr_trigger trig, enum intr_polarity pola)
 770 {
 771         int cpu;
 772
 773         KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
 774         KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
 775
 776         for (cpu = 0; cpu < ncpus; ++cpu) {
 777                 int irq;
 778
 779                 for (irq = 0; irq < ioapic_abi_line_irq_max; ++irq) {
 780                         const struct ioapic_irqmap *map =
 781                             &ioapic_irqmaps[cpu][irq];
 782
 783                         if (map->im_gsi == gsi) {
 784                                 KKASSERT(map->im_type == IOAPIC_IMT_LINE);
 785
 786                                 if (map->im_flags & IOAPIC_IMF_CONF) {
 787                                         if (map->im_trig != trig ||
 788                                             map->im_pola != pola)
 789                                                 return -1;
 790                                 }
 791                                 return irq;
 792                         }
 793                 }
 794         }
 795         return -1;
 796 }
 797
 798 int
 799 ioapic_abi_find_irq(int irq, enum intr_trigger trig, enum intr_polarity pola)
 800 {
 801         int cpu;
 802
 803         KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
 804         KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
 805
 806         if (irq < 0 || irq >= ioapic_abi_line_irq_max)
 807                 return -1;
 808
 809         for (cpu = 0; cpu < ncpus; ++cpu) {
 810                 const struct ioapic_irqmap *map = &ioapic_irqmaps[cpu][irq];
 811
 812                 if (map->im_type == IOAPIC_IMT_LINE) {
 813                         if (map->im_flags & IOAPIC_IMF_CONF) {
 814                                 if (map->im_trig != trig ||
 815                                     map->im_pola != pola)
 816                                         return -1;
 817                         }
 818                         return irq;
 819                 }
 820         }
 821         return -1;
 822 }
 823
 824 static void
 825 ioapic_abi_intr_config(int irq, enum intr_trigger trig, enum intr_polarity pola)
 826 {
 827         struct ioapic_irqinfo *info;
 828         struct ioapic_irqmap *map = NULL;
 829         void *ioaddr;
 830         int pin, cpuid;
 831
 832         KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
 833         KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
 834
 835         KKASSERT(irq >= 0 && irq < ioapic_abi_line_irq_max);
 836         for (cpuid = 0; cpuid < ncpus; ++cpuid) {
 837                 map = &ioapic_irqmaps[cpuid][irq];
 838                 if (map->im_type == IOAPIC_IMT_LINE)
 839                         break;
 840         }
 841         KKASSERT(cpuid < ncpus);
 842
 843 #ifdef notyet
 844         if (map->im_flags & IOAPIC_IMF_CONF) {
 845                 if (trig != map->im_trig) {
 846                         panic("ioapic_intr_config: trig %s -> %s\n",
 847                               intr_str_trigger(map->im_trig),
 848                               intr_str_trigger(trig));
 849                 }
 850                 if (pola != map->im_pola) {
 851                         panic("ioapic_intr_config: pola %s -> %s\n",
 852                               intr_str_polarity(map->im_pola),
 853                               intr_str_polarity(pola));
 854                 }
 855                 return;
 856         }
 857 #endif
 858         map->im_flags |= IOAPIC_IMF_CONF;
 859
 860         if (trig == map->im_trig && pola == map->im_pola)
 861                 return;
 862
 863         if (bootverbose) {
 864                 kprintf("IOAPIC: irq %d, gsi %d %s/%s -> %s/%s\n",
 865                         irq, map->im_gsi,
 866                         intr_str_trigger(map->im_trig),
 867                         intr_str_polarity(map->im_pola),
 868                         intr_str_trigger(trig),
 869                         intr_str_polarity(pola));
 870         }
 871         map->im_trig = trig;
 872         map->im_pola = pola;
 873
 874         pin = ioapic_gsi_pin(map->im_gsi);
 875         ioaddr = ioapic_gsi_ioaddr(map->im_gsi);
 876
 877         info = &ioapic_irqs[irq];
 878
 879         imen_lock();
 880
 881         info->io_flags &= ~IOAPIC_IRQI_FLAG_LEVEL;
 882         if (map->im_trig == INTR_TRIGGER_LEVEL)
 883                 info->io_flags |= IOAPIC_IRQI_FLAG_LEVEL;
 884
 885         ioapic_pin_setup(ioaddr, pin, IDT_OFFSET + irq,
 886             map->im_trig, map->im_pola, cpuid);
 887
 888         imen_unlock();
 889 }
 890
 891 int
 892 ioapic_abi_extint_irqmap(int irq)
 893 {
 894         struct ioapic_irqinfo *info;
 895         struct ioapic_irqmap *map;
 896         void *ioaddr;
 897         int pin, error, vec;
 898
 899         /* XXX only irq0 is allowed */
 900         KKASSERT(irq == 0);
 901
 902         vec = IDT_OFFSET + irq;
 903
 904         if (ioapic_abi_extint_irq == irq)
 905                 return 0;
 906         else if (ioapic_abi_extint_irq >= 0)
 907                 return EEXIST;
 908
 909         error = icu_ioapic_extint(irq, vec);
 910         if (error)
 911                 return error;
 912
 913         /* ExtINT is always targeted to cpu0 */
 914         map = &ioapic_irqmaps[0][irq];
 915
 916         KKASSERT(map->im_type == IOAPIC_IMT_RESERVED ||
 917                  map->im_type == IOAPIC_IMT_LINE);
 918         if (map->im_type == IOAPIC_IMT_LINE) {
 919                 if (map->im_flags & IOAPIC_IMF_CONF)
 920                         return EEXIST;
 921         }
 922         ioapic_abi_extint_irq = irq;
 923
 924         map->im_type = IOAPIC_IMT_LINE;
 925         map->im_trig = INTR_TRIGGER_EDGE;
 926         map->im_pola = INTR_POLARITY_HIGH;
 927         map->im_flags = IOAPIC_IMF_CONF;
 928
 929         map->im_gsi = ioapic_extpin_gsi();
 930         KKASSERT(map->im_gsi >= 0);
 931
 932         if (bootverbose) {
 933                 kprintf("IOAPIC: irq %d -> extint gsi %d %s/%s\n",
 934                         irq, map->im_gsi,
 935                         intr_str_trigger(map->im_trig),
 936                         intr_str_polarity(map->im_pola));
 937         }
 938
 939         pin = ioapic_gsi_pin(map->im_gsi);
 940         ioaddr = ioapic_gsi_ioaddr(map->im_gsi);
 941
 942         info = &ioapic_irqs[irq];
 943
 944         imen_lock();
 945
 946         info->io_addr = ioaddr;
 947         info->io_idx = IOAPIC_REDTBL + (2 * pin);
 948         info->io_flags = IOAPIC_IRQI_FLAG_MASKED;
 949
 950         ioapic_extpin_setup(ioaddr, pin, vec);
 951
 952         imen_unlock();
 953
 954         return 0;
 955 }
 956
 957 static int
 958 ioapic_abi_intr_cpuid(int irq)
 959 {
 960         const struct ioapic_irqmap *map = NULL;
 961         int cpuid;
 962
 963         KKASSERT(irq >= 0 && irq < ioapic_abi_line_irq_max);
 964
 965         for (cpuid = 0; cpuid < ncpus; ++cpuid) {
 966                 map = &ioapic_irqmaps[cpuid][irq];
 967                 if (map->im_type == IOAPIC_IMT_LINE)
 968                         return cpuid;
 969         }
 970
 971         /* XXX some drivers tries to peek at reserved IRQs */
 972         for (cpuid = 0; cpuid < ncpus; ++cpuid) {
 973                 map = &ioapic_irqmaps[cpuid][irq];
 974                 KKASSERT(map->im_type == IOAPIC_IMT_RESERVED);
 975         }
 976         return 0;
 977 }
 978
 979 static int
 980 ioapic_abi_gsi_cpuid(int irq, int gsi)
 981 {
 982         char envpath[32];
 983         int cpuid = -1;
 984
 985         KKASSERT(gsi >= 0);
 986
 987         if (!ioapic_abi_gsi_balance)
 988                 return 0;
 989
 990         if (irq == 0 || gsi == 0) {
 991                 if (bootverbose) {
 992                         kprintf("IOAPIC: irq %d, gsi %d -> cpu0 (0)\n",
 993                             irq, gsi);
 994                 }
 995                 return 0;
 996         }
 997
 998         if (irq == acpi_sci_irqno()) {
 999                 if (bootverbose) {
1000                         kprintf("IOAPIC: irq %d, gsi %d -> cpu0 (sci)\n",
1001                             irq, gsi);
1002                 }
1003                 return 0;
1004         }
1005
1006         ksnprintf(envpath, sizeof(envpath), "hw.ioapic.gsi.%d.cpu", gsi);
1007         kgetenv_int(envpath, &cpuid);
1008
1009         if (cpuid < 0) {
1010                 cpuid = gsi % ncpus;
1011                 if (bootverbose) {
1012                         kprintf("IOAPIC: irq %d, gsi %d -> cpu%d (auto)\n",
1013                             irq, gsi, cpuid);
1014                 }
1015         } else if (cpuid >= ncpus) {
1016                 cpuid = ncpus - 1;
1017                 if (bootverbose) {
1018                         kprintf("IOAPIC: irq %d, gsi %d -> cpu%d (fixup)\n",
1019                             irq, gsi, cpuid);
1020                 }
1021         } else {
1022                 if (bootverbose) {
1023                         kprintf("IOAPIC: irq %d, gsi %d -> cpu%d (user)\n",
1024                             irq, gsi, cpuid);
1025                 }
1026         }
1027         return cpuid;
1028 }