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/rman.h>
  50 #include <sys/thread2.h>
  51
  52 #include <machine/smp.h>
  53 #include <machine/segments.h>
  54 #include <machine/md_var.h>
  55 #include <machine/intr_machdep.h>
  56 #include <machine/globaldata.h>
  57 #include <machine/msi_var.h>
  58
  59 #include <machine_base/isa/isa_intr.h>
  60 #include <machine_base/icu/icu.h>
  61 #include <machine_base/icu/icu_var.h>
  62 #include <machine_base/apic/ioapic.h>
  63 #include <machine_base/apic/ioapic_abi.h>
  64 #include <machine_base/apic/ioapic_ipl.h>
  65 #include <machine_base/apic/apicreg.h>
  66
  67 #include <dev/acpica5/acpi_sci_var.h>
  68
  69 #define IOAPIC_HWI_VECTORS      IDT_HWI_VECTORS
  70
  71 extern inthand_t
  72         IDTVEC(ioapic_intr0),
  73         IDTVEC(ioapic_intr1),
  74         IDTVEC(ioapic_intr2),
  75         IDTVEC(ioapic_intr3),
  76         IDTVEC(ioapic_intr4),
  77         IDTVEC(ioapic_intr5),
  78         IDTVEC(ioapic_intr6),
  79         IDTVEC(ioapic_intr7),
  80         IDTVEC(ioapic_intr8),
  81         IDTVEC(ioapic_intr9),
  82         IDTVEC(ioapic_intr10),
  83         IDTVEC(ioapic_intr11),
  84         IDTVEC(ioapic_intr12),
  85         IDTVEC(ioapic_intr13),
  86         IDTVEC(ioapic_intr14),
  87         IDTVEC(ioapic_intr15),
  88         IDTVEC(ioapic_intr16),
  89         IDTVEC(ioapic_intr17),
  90         IDTVEC(ioapic_intr18),
  91         IDTVEC(ioapic_intr19),
  92         IDTVEC(ioapic_intr20),
  93         IDTVEC(ioapic_intr21),
  94         IDTVEC(ioapic_intr22),
  95         IDTVEC(ioapic_intr23),
  96         IDTVEC(ioapic_intr24),
  97         IDTVEC(ioapic_intr25),
  98         IDTVEC(ioapic_intr26),
  99         IDTVEC(ioapic_intr27),
 100         IDTVEC(ioapic_intr28),
 101         IDTVEC(ioapic_intr29),
 102         IDTVEC(ioapic_intr30),
 103         IDTVEC(ioapic_intr31),
 104         IDTVEC(ioapic_intr32),
 105         IDTVEC(ioapic_intr33),
 106         IDTVEC(ioapic_intr34),
 107         IDTVEC(ioapic_intr35),
 108         IDTVEC(ioapic_intr36),
 109         IDTVEC(ioapic_intr37),
 110         IDTVEC(ioapic_intr38),
 111         IDTVEC(ioapic_intr39),
 112         IDTVEC(ioapic_intr40),
 113         IDTVEC(ioapic_intr41),
 114         IDTVEC(ioapic_intr42),
 115         IDTVEC(ioapic_intr43),
 116         IDTVEC(ioapic_intr44),
 117         IDTVEC(ioapic_intr45),
 118         IDTVEC(ioapic_intr46),
 119         IDTVEC(ioapic_intr47),
 120         IDTVEC(ioapic_intr48),
 121         IDTVEC(ioapic_intr49),
 122         IDTVEC(ioapic_intr50),
 123         IDTVEC(ioapic_intr51),
 124         IDTVEC(ioapic_intr52),
 125         IDTVEC(ioapic_intr53),
 126         IDTVEC(ioapic_intr54),
 127         IDTVEC(ioapic_intr55),
 128         IDTVEC(ioapic_intr56),
 129         IDTVEC(ioapic_intr57),
 130         IDTVEC(ioapic_intr58),
 131         IDTVEC(ioapic_intr59),
 132         IDTVEC(ioapic_intr60),
 133         IDTVEC(ioapic_intr61),
 134         IDTVEC(ioapic_intr62),
 135         IDTVEC(ioapic_intr63),
 136         IDTVEC(ioapic_intr64),
 137         IDTVEC(ioapic_intr65),
 138         IDTVEC(ioapic_intr66),
 139         IDTVEC(ioapic_intr67),
 140         IDTVEC(ioapic_intr68),
 141         IDTVEC(ioapic_intr69),
 142         IDTVEC(ioapic_intr70),
 143         IDTVEC(ioapic_intr71),
 144         IDTVEC(ioapic_intr72),
 145         IDTVEC(ioapic_intr73),
 146         IDTVEC(ioapic_intr74),
 147         IDTVEC(ioapic_intr75),
 148         IDTVEC(ioapic_intr76),
 149         IDTVEC(ioapic_intr77),
 150         IDTVEC(ioapic_intr78),
 151         IDTVEC(ioapic_intr79),
 152         IDTVEC(ioapic_intr80),
 153         IDTVEC(ioapic_intr81),
 154         IDTVEC(ioapic_intr82),
 155         IDTVEC(ioapic_intr83),
 156         IDTVEC(ioapic_intr84),
 157         IDTVEC(ioapic_intr85),
 158         IDTVEC(ioapic_intr86),
 159         IDTVEC(ioapic_intr87),
 160         IDTVEC(ioapic_intr88),
 161         IDTVEC(ioapic_intr89),
 162         IDTVEC(ioapic_intr90),
 163         IDTVEC(ioapic_intr91),
 164         IDTVEC(ioapic_intr92),
 165         IDTVEC(ioapic_intr93),
 166         IDTVEC(ioapic_intr94),
 167         IDTVEC(ioapic_intr95),
 168         IDTVEC(ioapic_intr96),
 169         IDTVEC(ioapic_intr97),
 170         IDTVEC(ioapic_intr98),
 171         IDTVEC(ioapic_intr99),
 172         IDTVEC(ioapic_intr100),
 173         IDTVEC(ioapic_intr101),
 174         IDTVEC(ioapic_intr102),
 175         IDTVEC(ioapic_intr103),
 176         IDTVEC(ioapic_intr104),
 177         IDTVEC(ioapic_intr105),
 178         IDTVEC(ioapic_intr106),
 179         IDTVEC(ioapic_intr107),
 180         IDTVEC(ioapic_intr108),
 181         IDTVEC(ioapic_intr109),
 182         IDTVEC(ioapic_intr110),
 183         IDTVEC(ioapic_intr111),
 184         IDTVEC(ioapic_intr112),
 185         IDTVEC(ioapic_intr113),
 186         IDTVEC(ioapic_intr114),
 187         IDTVEC(ioapic_intr115),
 188         IDTVEC(ioapic_intr116),
 189         IDTVEC(ioapic_intr117),
 190         IDTVEC(ioapic_intr118),
 191         IDTVEC(ioapic_intr119),
 192         IDTVEC(ioapic_intr120),
 193         IDTVEC(ioapic_intr121),
 194         IDTVEC(ioapic_intr122),
 195         IDTVEC(ioapic_intr123),
 196         IDTVEC(ioapic_intr124),
 197         IDTVEC(ioapic_intr125),
 198         IDTVEC(ioapic_intr126),
 199         IDTVEC(ioapic_intr127),
 200         IDTVEC(ioapic_intr128),
 201         IDTVEC(ioapic_intr129),
 202         IDTVEC(ioapic_intr130),
 203         IDTVEC(ioapic_intr131),
 204         IDTVEC(ioapic_intr132),
 205         IDTVEC(ioapic_intr133),
 206         IDTVEC(ioapic_intr134),
 207         IDTVEC(ioapic_intr135),
 208         IDTVEC(ioapic_intr136),
 209         IDTVEC(ioapic_intr137),
 210         IDTVEC(ioapic_intr138),
 211         IDTVEC(ioapic_intr139),
 212         IDTVEC(ioapic_intr140),
 213         IDTVEC(ioapic_intr141),
 214         IDTVEC(ioapic_intr142),
 215         IDTVEC(ioapic_intr143),
 216         IDTVEC(ioapic_intr144),
 217         IDTVEC(ioapic_intr145),
 218         IDTVEC(ioapic_intr146),
 219         IDTVEC(ioapic_intr147),
 220         IDTVEC(ioapic_intr148),
 221         IDTVEC(ioapic_intr149),
 222         IDTVEC(ioapic_intr150),
 223         IDTVEC(ioapic_intr151),
 224         IDTVEC(ioapic_intr152),
 225         IDTVEC(ioapic_intr153),
 226         IDTVEC(ioapic_intr154),
 227         IDTVEC(ioapic_intr155),
 228         IDTVEC(ioapic_intr156),
 229         IDTVEC(ioapic_intr157),
 230         IDTVEC(ioapic_intr158),
 231         IDTVEC(ioapic_intr159),
 232         IDTVEC(ioapic_intr160),
 233         IDTVEC(ioapic_intr161),
 234         IDTVEC(ioapic_intr162),
 235         IDTVEC(ioapic_intr163),
 236         IDTVEC(ioapic_intr164),
 237         IDTVEC(ioapic_intr165),
 238         IDTVEC(ioapic_intr166),
 239         IDTVEC(ioapic_intr167),
 240         IDTVEC(ioapic_intr168),
 241         IDTVEC(ioapic_intr169),
 242         IDTVEC(ioapic_intr170),
 243         IDTVEC(ioapic_intr171),
 244         IDTVEC(ioapic_intr172),
 245         IDTVEC(ioapic_intr173),
 246         IDTVEC(ioapic_intr174),
 247         IDTVEC(ioapic_intr175),
 248         IDTVEC(ioapic_intr176),
 249         IDTVEC(ioapic_intr177),
 250         IDTVEC(ioapic_intr178),
 251         IDTVEC(ioapic_intr179),
 252         IDTVEC(ioapic_intr180),
 253         IDTVEC(ioapic_intr181),
 254         IDTVEC(ioapic_intr182),
 255         IDTVEC(ioapic_intr183),
 256         IDTVEC(ioapic_intr184),
 257         IDTVEC(ioapic_intr185),
 258         IDTVEC(ioapic_intr186),
 259         IDTVEC(ioapic_intr187),
 260         IDTVEC(ioapic_intr188),
 261         IDTVEC(ioapic_intr189),
 262         IDTVEC(ioapic_intr190),
 263         IDTVEC(ioapic_intr191);
 264
 265 static inthand_t *ioapic_intr[IOAPIC_HWI_VECTORS] = {
 266         &IDTVEC(ioapic_intr0),
 267         &IDTVEC(ioapic_intr1),
 268         &IDTVEC(ioapic_intr2),
 269         &IDTVEC(ioapic_intr3),
 270         &IDTVEC(ioapic_intr4),
 271         &IDTVEC(ioapic_intr5),
 272         &IDTVEC(ioapic_intr6),
 273         &IDTVEC(ioapic_intr7),
 274         &IDTVEC(ioapic_intr8),
 275         &IDTVEC(ioapic_intr9),
 276         &IDTVEC(ioapic_intr10),
 277         &IDTVEC(ioapic_intr11),
 278         &IDTVEC(ioapic_intr12),
 279         &IDTVEC(ioapic_intr13),
 280         &IDTVEC(ioapic_intr14),
 281         &IDTVEC(ioapic_intr15),
 282         &IDTVEC(ioapic_intr16),
 283         &IDTVEC(ioapic_intr17),
 284         &IDTVEC(ioapic_intr18),
 285         &IDTVEC(ioapic_intr19),
 286         &IDTVEC(ioapic_intr20),
 287         &IDTVEC(ioapic_intr21),
 288         &IDTVEC(ioapic_intr22),
 289         &IDTVEC(ioapic_intr23),
 290         &IDTVEC(ioapic_intr24),
 291         &IDTVEC(ioapic_intr25),
 292         &IDTVEC(ioapic_intr26),
 293         &IDTVEC(ioapic_intr27),
 294         &IDTVEC(ioapic_intr28),
 295         &IDTVEC(ioapic_intr29),
 296         &IDTVEC(ioapic_intr30),
 297         &IDTVEC(ioapic_intr31),
 298         &IDTVEC(ioapic_intr32),
 299         &IDTVEC(ioapic_intr33),
 300         &IDTVEC(ioapic_intr34),
 301         &IDTVEC(ioapic_intr35),
 302         &IDTVEC(ioapic_intr36),
 303         &IDTVEC(ioapic_intr37),
 304         &IDTVEC(ioapic_intr38),
 305         &IDTVEC(ioapic_intr39),
 306         &IDTVEC(ioapic_intr40),
 307         &IDTVEC(ioapic_intr41),
 308         &IDTVEC(ioapic_intr42),
 309         &IDTVEC(ioapic_intr43),
 310         &IDTVEC(ioapic_intr44),
 311         &IDTVEC(ioapic_intr45),
 312         &IDTVEC(ioapic_intr46),
 313         &IDTVEC(ioapic_intr47),
 314         &IDTVEC(ioapic_intr48),
 315         &IDTVEC(ioapic_intr49),
 316         &IDTVEC(ioapic_intr50),
 317         &IDTVEC(ioapic_intr51),
 318         &IDTVEC(ioapic_intr52),
 319         &IDTVEC(ioapic_intr53),
 320         &IDTVEC(ioapic_intr54),
 321         &IDTVEC(ioapic_intr55),
 322         &IDTVEC(ioapic_intr56),
 323         &IDTVEC(ioapic_intr57),
 324         &IDTVEC(ioapic_intr58),
 325         &IDTVEC(ioapic_intr59),
 326         &IDTVEC(ioapic_intr60),
 327         &IDTVEC(ioapic_intr61),
 328         &IDTVEC(ioapic_intr62),
 329         &IDTVEC(ioapic_intr63),
 330         &IDTVEC(ioapic_intr64),
 331         &IDTVEC(ioapic_intr65),
 332         &IDTVEC(ioapic_intr66),
 333         &IDTVEC(ioapic_intr67),
 334         &IDTVEC(ioapic_intr68),
 335         &IDTVEC(ioapic_intr69),
 336         &IDTVEC(ioapic_intr70),
 337         &IDTVEC(ioapic_intr71),
 338         &IDTVEC(ioapic_intr72),
 339         &IDTVEC(ioapic_intr73),
 340         &IDTVEC(ioapic_intr74),
 341         &IDTVEC(ioapic_intr75),
 342         &IDTVEC(ioapic_intr76),
 343         &IDTVEC(ioapic_intr77),
 344         &IDTVEC(ioapic_intr78),
 345         &IDTVEC(ioapic_intr79),
 346         &IDTVEC(ioapic_intr80),
 347         &IDTVEC(ioapic_intr81),
 348         &IDTVEC(ioapic_intr82),
 349         &IDTVEC(ioapic_intr83),
 350         &IDTVEC(ioapic_intr84),
 351         &IDTVEC(ioapic_intr85),
 352         &IDTVEC(ioapic_intr86),
 353         &IDTVEC(ioapic_intr87),
 354         &IDTVEC(ioapic_intr88),
 355         &IDTVEC(ioapic_intr89),
 356         &IDTVEC(ioapic_intr90),
 357         &IDTVEC(ioapic_intr91),
 358         &IDTVEC(ioapic_intr92),
 359         &IDTVEC(ioapic_intr93),
 360         &IDTVEC(ioapic_intr94),
 361         &IDTVEC(ioapic_intr95),
 362         &IDTVEC(ioapic_intr96),
 363         &IDTVEC(ioapic_intr97),
 364         &IDTVEC(ioapic_intr98),
 365         &IDTVEC(ioapic_intr99),
 366         &IDTVEC(ioapic_intr100),
 367         &IDTVEC(ioapic_intr101),
 368         &IDTVEC(ioapic_intr102),
 369         &IDTVEC(ioapic_intr103),
 370         &IDTVEC(ioapic_intr104),
 371         &IDTVEC(ioapic_intr105),
 372         &IDTVEC(ioapic_intr106),
 373         &IDTVEC(ioapic_intr107),
 374         &IDTVEC(ioapic_intr108),
 375         &IDTVEC(ioapic_intr109),
 376         &IDTVEC(ioapic_intr110),
 377         &IDTVEC(ioapic_intr111),
 378         &IDTVEC(ioapic_intr112),
 379         &IDTVEC(ioapic_intr113),
 380         &IDTVEC(ioapic_intr114),
 381         &IDTVEC(ioapic_intr115),
 382         &IDTVEC(ioapic_intr116),
 383         &IDTVEC(ioapic_intr117),
 384         &IDTVEC(ioapic_intr118),
 385         &IDTVEC(ioapic_intr119),
 386         &IDTVEC(ioapic_intr120),
 387         &IDTVEC(ioapic_intr121),
 388         &IDTVEC(ioapic_intr122),
 389         &IDTVEC(ioapic_intr123),
 390         &IDTVEC(ioapic_intr124),
 391         &IDTVEC(ioapic_intr125),
 392         &IDTVEC(ioapic_intr126),
 393         &IDTVEC(ioapic_intr127),
 394         &IDTVEC(ioapic_intr128),
 395         &IDTVEC(ioapic_intr129),
 396         &IDTVEC(ioapic_intr130),
 397         &IDTVEC(ioapic_intr131),
 398         &IDTVEC(ioapic_intr132),
 399         &IDTVEC(ioapic_intr133),
 400         &IDTVEC(ioapic_intr134),
 401         &IDTVEC(ioapic_intr135),
 402         &IDTVEC(ioapic_intr136),
 403         &IDTVEC(ioapic_intr137),
 404         &IDTVEC(ioapic_intr138),
 405         &IDTVEC(ioapic_intr139),
 406         &IDTVEC(ioapic_intr140),
 407         &IDTVEC(ioapic_intr141),
 408         &IDTVEC(ioapic_intr142),
 409         &IDTVEC(ioapic_intr143),
 410         &IDTVEC(ioapic_intr144),
 411         &IDTVEC(ioapic_intr145),
 412         &IDTVEC(ioapic_intr146),
 413         &IDTVEC(ioapic_intr147),
 414         &IDTVEC(ioapic_intr148),
 415         &IDTVEC(ioapic_intr149),
 416         &IDTVEC(ioapic_intr150),
 417         &IDTVEC(ioapic_intr151),
 418         &IDTVEC(ioapic_intr152),
 419         &IDTVEC(ioapic_intr153),
 420         &IDTVEC(ioapic_intr154),
 421         &IDTVEC(ioapic_intr155),
 422         &IDTVEC(ioapic_intr156),
 423         &IDTVEC(ioapic_intr157),
 424         &IDTVEC(ioapic_intr158),
 425         &IDTVEC(ioapic_intr159),
 426         &IDTVEC(ioapic_intr160),
 427         &IDTVEC(ioapic_intr161),
 428         &IDTVEC(ioapic_intr162),
 429         &IDTVEC(ioapic_intr163),
 430         &IDTVEC(ioapic_intr164),
 431         &IDTVEC(ioapic_intr165),
 432         &IDTVEC(ioapic_intr166),
 433         &IDTVEC(ioapic_intr167),
 434         &IDTVEC(ioapic_intr168),
 435         &IDTVEC(ioapic_intr169),
 436         &IDTVEC(ioapic_intr170),
 437         &IDTVEC(ioapic_intr171),
 438         &IDTVEC(ioapic_intr172),
 439         &IDTVEC(ioapic_intr173),
 440         &IDTVEC(ioapic_intr174),
 441         &IDTVEC(ioapic_intr175),
 442         &IDTVEC(ioapic_intr176),
 443         &IDTVEC(ioapic_intr177),
 444         &IDTVEC(ioapic_intr178),
 445         &IDTVEC(ioapic_intr179),
 446         &IDTVEC(ioapic_intr180),
 447         &IDTVEC(ioapic_intr181),
 448         &IDTVEC(ioapic_intr182),
 449         &IDTVEC(ioapic_intr183),
 450         &IDTVEC(ioapic_intr184),
 451         &IDTVEC(ioapic_intr185),
 452         &IDTVEC(ioapic_intr186),
 453         &IDTVEC(ioapic_intr187),
 454         &IDTVEC(ioapic_intr188),
 455         &IDTVEC(ioapic_intr189),
 456         &IDTVEC(ioapic_intr190),
 457         &IDTVEC(ioapic_intr191)
 458 };
 459
 460 #define IOAPIC_HWI_SYSCALL      (IDT_OFFSET_SYSCALL - IDT_OFFSET)
 461
 462 static struct ioapic_irqmap {
 463         int                     im_type;        /* IOAPIC_IMT_ */
 464         enum intr_trigger       im_trig;
 465         enum intr_polarity      im_pola;
 466         int                     im_gsi;
 467         int                     im_msi_base;
 468         uint32_t                im_flags;       /* IOAPIC_IMF_ */
 469 } ioapic_irqmaps[MAXCPU][IOAPIC_HWI_VECTORS];
 470
 471 static struct lwkt_token ioapic_irqmap_tok =
 472         LWKT_TOKEN_INITIALIZER(ioapic_irqmap_token);
 473
 474 #define IOAPIC_IMT_UNUSED       0
 475 #define IOAPIC_IMT_RESERVED     1
 476 #define IOAPIC_IMT_LEGACY       2
 477 #define IOAPIC_IMT_SYSCALL      3
 478 #define IOAPIC_IMT_MSI          4
 479
 480 #define IOAPIC_IMT_ISHWI(map)   ((map)->im_type != IOAPIC_IMT_RESERVED && \
 481                                  (map)->im_type != IOAPIC_IMT_SYSCALL)
 482
 483 #define IOAPIC_IMF_CONF         0x1
 484
 485 extern void     IOAPIC_INTREN(int);
 486 extern void     IOAPIC_INTRDIS(int);
 487
 488 extern int      imcr_present;
 489
 490 static void     ioapic_abi_intr_enable(int);
 491 static void     ioapic_abi_intr_disable(int);
 492 static void     ioapic_abi_intr_setup(int, int);
 493 static void     ioapic_abi_intr_teardown(int);
 494 static void     ioapic_abi_intr_config(int,
 495                     enum intr_trigger, enum intr_polarity);
 496 static int      ioapic_abi_intr_cpuid(int);
 497
 498 static int      ioapic_abi_msi_alloc(int [], int, int);
 499 static void     ioapic_abi_msi_release(const int [], int, int);
 500 static void     ioapic_abi_msi_map(int, uint64_t *, uint32_t *, int);
 501
 502 static void     ioapic_abi_finalize(void);
 503 static void     ioapic_abi_cleanup(void);
 504 static void     ioapic_abi_setdefault(void);
 505 static void     ioapic_abi_stabilize(void);
 506 static void     ioapic_abi_initmap(void);
 507 static void     ioapic_abi_rman_setup(struct rman *);
 508
 509 static int      ioapic_abi_gsi_cpuid(int, int);
 510
 511 struct machintr_abi MachIntrABI_IOAPIC = {
 512         MACHINTR_IOAPIC,
 513         .intr_disable   = ioapic_abi_intr_disable,
 514         .intr_enable    = ioapic_abi_intr_enable,
 515         .intr_setup     = ioapic_abi_intr_setup,
 516         .intr_teardown  = ioapic_abi_intr_teardown,
 517         .intr_config    = ioapic_abi_intr_config,
 518         .intr_cpuid     = ioapic_abi_intr_cpuid,
 519
 520         .msi_alloc      = ioapic_abi_msi_alloc,
 521         .msi_release    = ioapic_abi_msi_release,
 522         .msi_map        = ioapic_abi_msi_map,
 523
 524         .finalize       = ioapic_abi_finalize,
 525         .cleanup        = ioapic_abi_cleanup,
 526         .setdefault     = ioapic_abi_setdefault,
 527         .stabilize      = ioapic_abi_stabilize,
 528         .initmap        = ioapic_abi_initmap,
 529         .rman_setup     = ioapic_abi_rman_setup
 530 };
 531
 532 static int      ioapic_abi_extint_irq = -1;
 533 static int      ioapic_abi_legacy_irq_max;
 534 static int      ioapic_abi_gsi_balance;
 535 static int      ioapic_abi_msi_start;   /* NOTE: for testing only */
 536
 537 struct ioapic_irqinfo   ioapic_irqs[IOAPIC_HWI_VECTORS];
 538
 539 static void
 540 ioapic_abi_intr_enable(int irq)
 541 {
 542         const struct ioapic_irqmap *map;
 543
 544         KASSERT(irq >= 0 && irq < IOAPIC_HWI_VECTORS,
 545             ("ioapic enable, invalid irq %d\n", irq));
 546
 547         map = &ioapic_irqmaps[mycpuid][irq];
 548         KASSERT(IOAPIC_IMT_ISHWI(map),
 549             ("ioapic enable, not hwi irq %d, type %d, cpu%d\n",
 550              irq, map->im_type, mycpuid));
 551         if (map->im_type != IOAPIC_IMT_LEGACY)
 552                 return;
 553
 554         IOAPIC_INTREN(irq);
 555 }
 556
 557 static void
 558 ioapic_abi_intr_disable(int irq)
 559 {
 560         const struct ioapic_irqmap *map;
 561
 562         KASSERT(irq >= 0 && irq < IOAPIC_HWI_VECTORS,
 563             ("ioapic disable, invalid irq %d\n", irq));
 564
 565         map = &ioapic_irqmaps[mycpuid][irq];
 566         KASSERT(IOAPIC_IMT_ISHWI(map),
 567             ("ioapic disable, not hwi irq %d, type %d, cpu%d\n",
 568              irq, map->im_type, mycpuid));
 569         if (map->im_type != IOAPIC_IMT_LEGACY)
 570                 return;
 571
 572         IOAPIC_INTRDIS(irq);
 573 }
 574
 575 static void
 576 ioapic_abi_finalize(void)
 577 {
 578         KKASSERT(MachIntrABI.type == MACHINTR_IOAPIC);
 579         KKASSERT(ioapic_enable);
 580
 581         /*
 582          * If an IMCR is present, program bit 0 to disconnect the 8259
 583          * from the BSP.
 584          */
 585         if (imcr_present) {
 586                 outb(0x22, 0x70);       /* select IMCR */
 587                 outb(0x23, 0x01);       /* disconnect 8259 */
 588         }
 589 }
 590
 591 /*
 592  * This routine is called after physical interrupts are enabled but before
 593  * the critical section is released.  We need to clean out any interrupts
 594  * that had already been posted to the cpu.
 595  */
 596 static void
 597 ioapic_abi_cleanup(void)
 598 {
 599         bzero(mdcpu->gd_ipending, sizeof(mdcpu->gd_ipending));
 600 }
 601
 602 /* Must never be called */
 603 static void
 604 ioapic_abi_stabilize(void)
 605 {
 606         panic("ioapic_stabilize is called\n");
 607 }
 608
 609 static void
 610 ioapic_abi_intr_setup(int intr, int flags)
 611 {
 612         const struct ioapic_irqmap *map;
 613         int vector, select;
 614         uint32_t value;
 615         register_t ef;
 616
 617         KASSERT(intr >= 0 && intr < IOAPIC_HWI_VECTORS,
 618             ("ioapic setup, invalid irq %d\n", intr));
 619
 620         map = &ioapic_irqmaps[mycpuid][intr];
 621         KASSERT(IOAPIC_IMT_ISHWI(map),
 622             ("ioapic setup, not hwi irq %d, type %d, cpu%d",
 623              intr, map->im_type, mycpuid));
 624         if (map->im_type != IOAPIC_IMT_LEGACY)
 625                 return;
 626
 627         KASSERT(ioapic_irqs[intr].io_addr != NULL,
 628             ("ioapic setup, no GSI information, irq %d\n", intr));
 629
 630         ef = read_rflags();
 631         cpu_disable_intr();
 632
 633         vector = IDT_OFFSET + intr;
 634
 635         /*
 636          * Now reprogram the vector in the IO APIC.  In order to avoid
 637          * losing an EOI for a level interrupt, which is vector based,
 638          * make sure that the IO APIC is programmed for edge-triggering
 639          * first, then reprogrammed with the new vector.  This should
 640          * clear the IRR bit.
 641          */
 642         imen_lock();
 643
 644         select = ioapic_irqs[intr].io_idx;
 645         value = ioapic_read(ioapic_irqs[intr].io_addr, select);
 646         value |= IOART_INTMSET;
 647
 648         ioapic_write(ioapic_irqs[intr].io_addr, select,
 649             (value & ~APIC_TRIGMOD_MASK));
 650         ioapic_write(ioapic_irqs[intr].io_addr, select,
 651             (value & ~IOART_INTVEC) | vector);
 652
 653         imen_unlock();
 654
 655         IOAPIC_INTREN(intr);
 656
 657         write_rflags(ef);
 658 }
 659
 660 static void
 661 ioapic_abi_intr_teardown(int intr)
 662 {
 663         const struct ioapic_irqmap *map;
 664         int vector, select;
 665         uint32_t value;
 666         register_t ef;
 667
 668         KASSERT(intr >= 0 && intr < IOAPIC_HWI_VECTORS,
 669             ("ioapic teardown, invalid irq %d\n", intr));
 670
 671         map = &ioapic_irqmaps[mycpuid][intr];
 672         KASSERT(IOAPIC_IMT_ISHWI(map),
 673             ("ioapic teardown, not hwi irq %d, type %d, cpu%d",
 674              intr, map->im_type, mycpuid));
 675         if (map->im_type != IOAPIC_IMT_LEGACY)
 676                 return;
 677
 678         KASSERT(ioapic_irqs[intr].io_addr != NULL,
 679             ("ioapic teardown, no GSI information, irq %d\n", intr));
 680
 681         ef = read_rflags();
 682         cpu_disable_intr();
 683
 684         /*
 685          * Teardown an interrupt vector.  The vector should already be
 686          * installed in the cpu's IDT, but make sure.
 687          */
 688         IOAPIC_INTRDIS(intr);
 689
 690         vector = IDT_OFFSET + intr;
 691
 692         /*
 693          * In order to avoid losing an EOI for a level interrupt, which
 694          * is vector based, make sure that the IO APIC is programmed for
 695          * edge-triggering first, then reprogrammed with the new vector.
 696          * This should clear the IRR bit.
 697          */
 698         imen_lock();
 699
 700         select = ioapic_irqs[intr].io_idx;
 701         value = ioapic_read(ioapic_irqs[intr].io_addr, select);
 702
 703         ioapic_write(ioapic_irqs[intr].io_addr, select,
 704             (value & ~APIC_TRIGMOD_MASK));
 705         ioapic_write(ioapic_irqs[intr].io_addr, select,
 706             (value & ~IOART_INTVEC) | vector);
 707
 708         imen_unlock();
 709
 710         write_rflags(ef);
 711 }
 712
 713 static void
 714 ioapic_abi_setdefault(void)
 715 {
 716         int intr;
 717
 718         for (intr = 0; intr < IOAPIC_HWI_VECTORS; ++intr) {
 719                 if (intr == IOAPIC_HWI_SYSCALL)
 720                         continue;
 721                 setidt_global(IDT_OFFSET + intr, ioapic_intr[intr],
 722                     SDT_SYSIGT, SEL_KPL, 0);
 723         }
 724 }
 725
 726 static void
 727 ioapic_abi_initmap(void)
 728 {
 729         int cpu;
 730
 731         kgetenv_int("hw.ioapic.gsi.balance", &ioapic_abi_gsi_balance);
 732
 733         kgetenv_int("hw.ioapic.msi_start", &ioapic_abi_msi_start);
 734         ioapic_abi_msi_start &= ~0x1f;  /* MUST be 32 aligned */
 735
 736         /*
 737          * NOTE: ncpus is not ready yet
 738          */
 739         for (cpu = 0; cpu < MAXCPU; ++cpu) {
 740                 int i;
 741
 742                 for (i = 0; i < IOAPIC_HWI_VECTORS; ++i) {
 743                         ioapic_irqmaps[cpu][i].im_gsi = -1;
 744                         ioapic_irqmaps[cpu][i].im_msi_base = -1;
 745                 }
 746                 ioapic_irqmaps[cpu][IOAPIC_HWI_SYSCALL].im_type =
 747                     IOAPIC_IMT_SYSCALL;
 748         }
 749 }
 750
 751 void
 752 ioapic_set_legacy_irqmap(int irq, int gsi, enum intr_trigger trig,
 753     enum intr_polarity pola)
 754 {
 755         struct ioapic_irqinfo *info;
 756         struct ioapic_irqmap *map;
 757         void *ioaddr;
 758         int pin, cpuid;
 759
 760         KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
 761         KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
 762
 763         KKASSERT(irq >= 0 && irq < IOAPIC_HWI_VECTORS);
 764         if (irq > ioapic_abi_legacy_irq_max)
 765                 ioapic_abi_legacy_irq_max = irq;
 766
 767         cpuid = ioapic_abi_gsi_cpuid(irq, gsi);
 768
 769         map = &ioapic_irqmaps[cpuid][irq];
 770
 771         KKASSERT(map->im_type == IOAPIC_IMT_UNUSED);
 772         map->im_type = IOAPIC_IMT_LEGACY;
 773
 774         map->im_gsi = gsi;
 775         map->im_trig = trig;
 776         map->im_pola = pola;
 777
 778         if (bootverbose) {
 779                 kprintf("IOAPIC: irq %d -> gsi %d %s/%s\n",
 780                         irq, map->im_gsi,
 781                         intr_str_trigger(map->im_trig),
 782                         intr_str_polarity(map->im_pola));
 783         }
 784
 785         pin = ioapic_gsi_pin(map->im_gsi);
 786         ioaddr = ioapic_gsi_ioaddr(map->im_gsi);
 787
 788         info = &ioapic_irqs[irq];
 789
 790         imen_lock();
 791
 792         info->io_addr = ioaddr;
 793         info->io_idx = IOAPIC_REDTBL + (2 * pin);
 794         info->io_flags = IOAPIC_IRQI_FLAG_MASKED;
 795         if (map->im_trig == INTR_TRIGGER_LEVEL)
 796                 info->io_flags |= IOAPIC_IRQI_FLAG_LEVEL;
 797
 798         ioapic_pin_setup(ioaddr, pin, IDT_OFFSET + irq,
 799             map->im_trig, map->im_pola, cpuid);
 800
 801         imen_unlock();
 802 }
 803
 804 void
 805 ioapic_fixup_legacy_irqmaps(void)
 806 {
 807         int cpu;
 808
 809         for (cpu = 0; cpu < ncpus; ++cpu) {
 810                 int i;
 811
 812                 for (i = 0; i < ISA_IRQ_CNT; ++i) {
 813                         struct ioapic_irqmap *map = &ioapic_irqmaps[cpu][i];
 814
 815                         if (map->im_type == IOAPIC_IMT_UNUSED) {
 816                                 map->im_type = IOAPIC_IMT_RESERVED;
 817                                 if (bootverbose) {
 818                                         kprintf("IOAPIC: "
 819                                             "cpu%d irq %d reserved\n", cpu, i);
 820                                 }
 821                         }
 822                 }
 823         }
 824
 825         ioapic_abi_legacy_irq_max += 1;
 826         if (bootverbose) {
 827                 kprintf("IOAPIC: legacy irq max %d\n",
 828                     ioapic_abi_legacy_irq_max);
 829         }
 830 }
 831
 832 int
 833 ioapic_find_legacy_by_gsi(int gsi, enum intr_trigger trig,
 834     enum intr_polarity pola)
 835 {
 836         int cpu;
 837
 838         KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
 839         KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
 840
 841         for (cpu = 0; cpu < ncpus; ++cpu) {
 842                 int irq;
 843
 844                 for (irq = 0; irq < ioapic_abi_legacy_irq_max; ++irq) {
 845                         const struct ioapic_irqmap *map =
 846                             &ioapic_irqmaps[cpu][irq];
 847
 848                         if (map->im_gsi == gsi) {
 849                                 KKASSERT(map->im_type == IOAPIC_IMT_LEGACY);
 850
 851                                 if (map->im_flags & IOAPIC_IMF_CONF) {
 852                                         if (map->im_trig != trig ||
 853                                             map->im_pola != pola)
 854                                                 return -1;
 855                                 }
 856                                 return irq;
 857                         }
 858                 }
 859         }
 860         return -1;
 861 }
 862
 863 int
 864 ioapic_find_legacy_by_irq(int irq, enum intr_trigger trig,
 865     enum intr_polarity pola)
 866 {
 867         int cpu;
 868
 869         KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
 870         KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
 871
 872         if (irq < 0 || irq >= ioapic_abi_legacy_irq_max)
 873                 return -1;
 874
 875         for (cpu = 0; cpu < ncpus; ++cpu) {
 876                 const struct ioapic_irqmap *map = &ioapic_irqmaps[cpu][irq];
 877
 878                 if (map->im_type == IOAPIC_IMT_LEGACY) {
 879                         if (map->im_flags & IOAPIC_IMF_CONF) {
 880                                 if (map->im_trig != trig ||
 881                                     map->im_pola != pola)
 882                                         return -1;
 883                         }
 884                         return irq;
 885                 }
 886         }
 887         return -1;
 888 }
 889
 890 static void
 891 ioapic_abi_intr_config(int irq, enum intr_trigger trig, enum intr_polarity pola)
 892 {
 893         struct ioapic_irqinfo *info;
 894         struct ioapic_irqmap *map = NULL;
 895         void *ioaddr;
 896         int pin, cpuid;
 897
 898         KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
 899         KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
 900
 901         KKASSERT(irq >= 0 && irq < ioapic_abi_legacy_irq_max);
 902         for (cpuid = 0; cpuid < ncpus; ++cpuid) {
 903                 map = &ioapic_irqmaps[cpuid][irq];
 904                 if (map->im_type == IOAPIC_IMT_LEGACY)
 905                         break;
 906         }
 907         KKASSERT(cpuid < ncpus);
 908
 909 #ifdef notyet
 910         if (map->im_flags & IOAPIC_IMF_CONF) {
 911                 if (trig != map->im_trig) {
 912                         panic("ioapic_intr_config: trig %s -> %s\n",
 913                               intr_str_trigger(map->im_trig),
 914                               intr_str_trigger(trig));
 915                 }
 916                 if (pola != map->im_pola) {
 917                         panic("ioapic_intr_config: pola %s -> %s\n",
 918                               intr_str_polarity(map->im_pola),
 919                               intr_str_polarity(pola));
 920                 }
 921                 return;
 922         }
 923 #endif
 924         map->im_flags |= IOAPIC_IMF_CONF;
 925
 926         if (trig == map->im_trig && pola == map->im_pola)
 927                 return;
 928
 929         if (bootverbose) {
 930                 kprintf("IOAPIC: irq %d, gsi %d %s/%s -> %s/%s\n",
 931                         irq, map->im_gsi,
 932                         intr_str_trigger(map->im_trig),
 933                         intr_str_polarity(map->im_pola),
 934                         intr_str_trigger(trig),
 935                         intr_str_polarity(pola));
 936         }
 937         map->im_trig = trig;
 938         map->im_pola = pola;
 939
 940         pin = ioapic_gsi_pin(map->im_gsi);
 941         ioaddr = ioapic_gsi_ioaddr(map->im_gsi);
 942
 943         info = &ioapic_irqs[irq];
 944
 945         imen_lock();
 946
 947         info->io_flags &= ~IOAPIC_IRQI_FLAG_LEVEL;
 948         if (map->im_trig == INTR_TRIGGER_LEVEL)
 949                 info->io_flags |= IOAPIC_IRQI_FLAG_LEVEL;
 950
 951         ioapic_pin_setup(ioaddr, pin, IDT_OFFSET + irq,
 952             map->im_trig, map->im_pola, cpuid);
 953
 954         imen_unlock();
 955 }
 956
 957 int
 958 ioapic_conf_legacy_extint(int irq)
 959 {
 960         struct ioapic_irqinfo *info;
 961         struct ioapic_irqmap *map;
 962         void *ioaddr;
 963         int pin, error, vec;
 964
 965         /* XXX only irq0 is allowed */
 966         KKASSERT(irq == 0);
 967
 968         vec = IDT_OFFSET + irq;
 969
 970         if (ioapic_abi_extint_irq == irq)
 971                 return 0;
 972         else if (ioapic_abi_extint_irq >= 0)
 973                 return EEXIST;
 974
 975         error = icu_ioapic_extint(irq, vec);
 976         if (error)
 977                 return error;
 978
 979         /* ExtINT is always targeted to cpu0 */
 980         map = &ioapic_irqmaps[0][irq];
 981
 982         KKASSERT(map->im_type == IOAPIC_IMT_RESERVED ||
 983                  map->im_type == IOAPIC_IMT_LEGACY);
 984         if (map->im_type == IOAPIC_IMT_LEGACY) {
 985                 if (map->im_flags & IOAPIC_IMF_CONF)
 986                         return EEXIST;
 987         }
 988         ioapic_abi_extint_irq = irq;
 989
 990         map->im_type = IOAPIC_IMT_LEGACY;
 991         map->im_trig = INTR_TRIGGER_EDGE;
 992         map->im_pola = INTR_POLARITY_HIGH;
 993         map->im_flags = IOAPIC_IMF_CONF;
 994
 995         map->im_gsi = ioapic_extpin_gsi();
 996         KKASSERT(map->im_gsi >= 0);
 997
 998         if (bootverbose) {
 999                 kprintf("IOAPIC: irq %d -> extint gsi %d %s/%s\n",
1000                         irq, map->im_gsi,
1001                         intr_str_trigger(map->im_trig),
1002                         intr_str_polarity(map->im_pola));
1003         }
1004
1005         pin = ioapic_gsi_pin(map->im_gsi);
1006         ioaddr = ioapic_gsi_ioaddr(map->im_gsi);
1007
1008         info = &ioapic_irqs[irq];
1009
1010         imen_lock();
1011
1012         info->io_addr = ioaddr;
1013         info->io_idx = IOAPIC_REDTBL + (2 * pin);
1014         info->io_flags = IOAPIC_IRQI_FLAG_MASKED;
1015
1016         ioapic_extpin_setup(ioaddr, pin, vec);
1017
1018         imen_unlock();
1019
1020         return 0;
1021 }
1022
1023 static int
1024 ioapic_abi_intr_cpuid(int irq)
1025 {
1026         const struct ioapic_irqmap *map = NULL;
1027         int cpuid;
1028
1029         KKASSERT(irq >= 0 && irq < ioapic_abi_legacy_irq_max);
1030
1031         for (cpuid = 0; cpuid < ncpus; ++cpuid) {
1032                 map = &ioapic_irqmaps[cpuid][irq];
1033                 if (map->im_type == IOAPIC_IMT_LEGACY)
1034                         return cpuid;
1035         }
1036
1037         /* XXX some drivers tries to peek at reserved IRQs */
1038         for (cpuid = 0; cpuid < ncpus; ++cpuid) {
1039                 map = &ioapic_irqmaps[cpuid][irq];
1040                 KKASSERT(map->im_type == IOAPIC_IMT_RESERVED);
1041         }
1042         return 0;
1043 }
1044
1045 static int
1046 ioapic_abi_gsi_cpuid(int irq, int gsi)
1047 {
1048         char envpath[32];
1049         int cpuid = -1;
1050
1051         KKASSERT(gsi >= 0);
1052
1053         if (irq == 0 || gsi == 0) {
1054                 if (bootverbose) {
1055                         kprintf("IOAPIC: irq %d, gsi %d -> cpu0 (0)\n",
1056                             irq, gsi);
1057                 }
1058                 return 0;
1059         }
1060
1061         if (irq == acpi_sci_irqno()) {
1062                 if (bootverbose) {
1063                         kprintf("IOAPIC: irq %d, gsi %d -> cpu0 (sci)\n",
1064                             irq, gsi);
1065                 }
1066                 return 0;
1067         }
1068
1069         ksnprintf(envpath, sizeof(envpath), "hw.ioapic.gsi.%d.cpu", gsi);
1070         kgetenv_int(envpath, &cpuid);
1071
1072         if (cpuid < 0) {
1073                 if (!ioapic_abi_gsi_balance) {
1074                         if (bootverbose) {
1075                                 kprintf("IOAPIC: irq %d, gsi %d -> cpu0 "
1076                                     "(fixed)\n", irq, gsi);
1077                         }
1078                         return 0;
1079                 }
1080
1081                 cpuid = gsi % ncpus;
1082                 if (bootverbose) {
1083                         kprintf("IOAPIC: irq %d, gsi %d -> cpu%d (auto)\n",
1084                             irq, gsi, cpuid);
1085                 }
1086         } else if (cpuid >= ncpus) {
1087                 cpuid = ncpus - 1;
1088                 if (bootverbose) {
1089                         kprintf("IOAPIC: irq %d, gsi %d -> cpu%d (fixup)\n",
1090                             irq, gsi, cpuid);
1091                 }
1092         } else {
1093                 if (bootverbose) {
1094                         kprintf("IOAPIC: irq %d, gsi %d -> cpu%d (user)\n",
1095                             irq, gsi, cpuid);
1096                 }
1097         }
1098         return cpuid;
1099 }
1100
1101 static void
1102 ioapic_abi_rman_setup(struct rman *rm)
1103 {
1104         int start, end, i;
1105
1106         KASSERT(rm->rm_cpuid >= 0 && rm->rm_cpuid < MAXCPU,
1107             ("invalid rman cpuid %d", rm->rm_cpuid));
1108
1109         start = end = -1;
1110         for (i = 0; i < IOAPIC_HWI_VECTORS; ++i) {
1111                 const struct ioapic_irqmap *map =
1112                     &ioapic_irqmaps[rm->rm_cpuid][i];
1113
1114                 if (start < 0) {
1115                         if (IOAPIC_IMT_ISHWI(map))
1116                                 start = end = i;
1117                 } else {
1118                         if (IOAPIC_IMT_ISHWI(map)) {
1119                                 end = i;
1120                         } else {
1121                                 KKASSERT(end >= 0);
1122                                 if (bootverbose) {
1123                                         kprintf("IOAPIC: rman cpu%d %d - %d\n",
1124                                             rm->rm_cpuid, start, end);
1125                                 }
1126                                 if (rman_manage_region(rm, start, end)) {
1127                                         panic("rman_manage_region"
1128                                             "(cpu%d %d - %d)", rm->rm_cpuid,
1129                                             start, end);
1130                                 }
1131                                 start = end = -1;
1132                         }
1133                 }
1134         }
1135         if (start >= 0) {
1136                 KKASSERT(end >= 0);
1137                 if (bootverbose) {
1138                         kprintf("IOAPIC: rman cpu%d %d - %d\n",
1139                             rm->rm_cpuid, start, end);
1140                 }
1141                 if (rman_manage_region(rm, start, end)) {
1142                         panic("rman_manage_region(cpu%d %d - %d)",
1143                             rm->rm_cpuid, start, end);
1144                 }
1145         }
1146 }
1147
1148 static int
1149 ioapic_abi_msi_alloc(int intrs[], int count, int cpuid)
1150 {
1151         int i, error;
1152
1153         KASSERT(cpuid >= 0 && cpuid < ncpus,
1154             ("invalid cpuid %d", cpuid));
1155
1156         KASSERT(count > 0 && count <= 32, ("invalid count %d\n", count));
1157         KASSERT((count & (count - 1)) == 0,
1158             ("count %d is not power of 2\n", count));
1159
1160         lwkt_gettoken(&ioapic_irqmap_tok);
1161
1162         /*
1163          * NOTE:
1164          * Since IDT_OFFSET is 32, which is the maximum valid 'count',
1165          * we do not need to find out the first properly aligned
1166          * interrupt vector.
1167          */
1168
1169         error = EMSGSIZE;
1170         for (i = ioapic_abi_msi_start; i < IOAPIC_HWI_VECTORS; i += count) {
1171                 int j;
1172
1173                 if (ioapic_irqmaps[cpuid][i].im_type != IOAPIC_IMT_UNUSED)
1174                         continue;
1175
1176                 for (j = 1; j < count; ++j) {
1177                         if (ioapic_irqmaps[cpuid][i + j].im_type !=
1178                             IOAPIC_IMT_UNUSED)
1179                                 break;
1180                 }
1181                 if (j != count)
1182                         continue;
1183
1184                 for (j = 0; j < count; ++j) {
1185                         struct ioapic_irqmap *map;
1186                         int intr = i + j;
1187
1188                         map = &ioapic_irqmaps[cpuid][intr];
1189                         KASSERT(map->im_msi_base < 0,
1190                             ("intr %d, stale MSI-base %d\n",
1191                              intr, map->im_msi_base));
1192
1193                         map->im_type = IOAPIC_IMT_MSI;
1194                         map->im_msi_base = i;
1195
1196                         intrs[j] = intr;
1197                         msi_setup(intr, cpuid);
1198
1199                         if (bootverbose) {
1200                                 kprintf("alloc MSI intr %d on cpu%d\n",
1201                                     intr, cpuid);
1202                         }
1203                 }
1204                 error = 0;
1205                 break;
1206         }
1207
1208         lwkt_reltoken(&ioapic_irqmap_tok);
1209
1210         return error;
1211 }
1212
1213 static void
1214 ioapic_abi_msi_release(const int intrs[], int count, int cpuid)
1215 {
1216         int i, msi_base = -1, intr_next = -1, mask;
1217
1218         KASSERT(cpuid >= 0 && cpuid < ncpus,
1219             ("invalid cpuid %d", cpuid));
1220
1221         KASSERT(count > 0 && count <= 32, ("invalid count %d\n", count));
1222
1223         mask = count - 1;
1224         KASSERT((count & mask) == 0, ("count %d is not power of 2\n", count));
1225
1226         lwkt_gettoken(&ioapic_irqmap_tok);
1227
1228         for (i = 0; i < count; ++i) {
1229                 struct ioapic_irqmap *map;
1230                 int intr = intrs[i];
1231
1232                 KASSERT(intr >= 0 && intr < IOAPIC_HWI_VECTORS,
1233                     ("invalid intr %d\n", intr));
1234
1235                 map = &ioapic_irqmaps[cpuid][intr];
1236                 KASSERT(map->im_type == IOAPIC_IMT_MSI,
1237                     ("try release non-MSI intr %d, type %d\n",
1238                      intr, map->im_type));
1239                 KASSERT(map->im_msi_base >= 0 && map->im_msi_base <= intr,
1240                     ("intr %d, invalid MSI-base %d\n", intr, map->im_msi_base));
1241                 KASSERT((map->im_msi_base & mask) == 0,
1242                     ("intr %d, MSI-base %d is not proper aligned %d\n",
1243                      intr, map->im_msi_base, count));
1244
1245                 if (msi_base < 0) {
1246                         msi_base = map->im_msi_base;
1247                 } else {
1248                         KASSERT(map->im_msi_base == msi_base,
1249                             ("intr %d, inconsistent MSI-base, "
1250                              "was %d, now %d\n",
1251                              intr, msi_base, map->im_msi_base));
1252                 }
1253
1254                 if (intr_next < intr)
1255                         intr_next = intr;
1256
1257                 map->im_type = IOAPIC_IMT_UNUSED;
1258                 map->im_msi_base = -1;
1259
1260                 if (bootverbose)
1261                         kprintf("release MSI intr %d on cpu%d\n", intr, cpuid);
1262         }
1263
1264         KKASSERT(intr_next > 0);
1265         KKASSERT(msi_base >= 0);
1266
1267         ++intr_next;
1268         if (intr_next < IOAPIC_HWI_VECTORS) {
1269                 const struct ioapic_irqmap *map =
1270                     &ioapic_irqmaps[cpuid][intr_next];
1271
1272                 if (map->im_type == IOAPIC_IMT_MSI) {
1273                         KASSERT(map->im_msi_base != msi_base,
1274                             ("more than %d MSI was allocated\n", count));
1275                 }
1276         }
1277
1278         lwkt_reltoken(&ioapic_irqmap_tok);
1279 }
1280
1281 static void
1282 ioapic_abi_msi_map(int intr, uint64_t *addr, uint32_t *data, int cpuid)
1283 {
1284         const struct ioapic_irqmap *map;
1285
1286         KASSERT(cpuid >= 0 && cpuid < ncpus,
1287             ("invalid cpuid %d", cpuid));
1288
1289         KASSERT(intr >= 0 && intr < IOAPIC_HWI_VECTORS,
1290             ("invalid intr %d\n", intr));
1291
1292         lwkt_gettoken(&ioapic_irqmap_tok);
1293
1294         map = &ioapic_irqmaps[cpuid][intr];
1295         KASSERT(map->im_type == IOAPIC_IMT_MSI,
1296             ("try map non-MSI intr %d, type %d\n", intr, map->im_type));
1297         KASSERT(map->im_msi_base >= 0 && map->im_msi_base <= intr,
1298             ("intr %d, invalid MSI-base %d\n", intr, map->im_msi_base));
1299
1300         msi_map(map->im_msi_base, addr, data, cpuid);
1301
1302         if (bootverbose)
1303                 kprintf("map MSI intr %d on cpu%d\n", intr, cpuid);
1304
1305         lwkt_reltoken(&ioapic_irqmap_tok);
1306 }