1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2021 Alexander Motin <[email protected]> 5 * Copyright 2019 Cisco Systems, Inc. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 #include <sys/types.h> 32 #include <sys/param.h> 33 #include <sys/bus.h> 34 #include <sys/conf.h> 35 #include <sys/kernel.h> 36 #include <sys/limits.h> 37 #include <sys/module.h> 38 #include <sys/sysctl.h> 39 #include <sys/systm.h> 40 #include <sys/malloc.h> 41 42 #include <machine/bus.h> 43 #include <machine/resource.h> 44 #include <machine/intr_machdep.h> 45 #include <sys/rman.h> 46 #include <sys/lock.h> 47 #include <sys/mutex.h> 48 49 #include <sys/pciio.h> 50 #include <dev/pci/pcivar.h> 51 #include <dev/pci/pcireg.h> 52 #include <dev/pci/pci_private.h> 53 #include <dev/pci/pcib_private.h> 54 55 #include <dev/vmd/vmd.h> 56 57 #include "pcib_if.h" 58 59 struct vmd_type { 60 u_int16_t vmd_vid; 61 u_int16_t vmd_did; 62 char *vmd_name; 63 int flags; 64 #define BUS_RESTRICT 1 65 #define VECTOR_OFFSET 2 66 #define CAN_BYPASS_MSI 4 67 }; 68 69 #define VMD_CAP 0x40 70 #define VMD_BUS_RESTRICT 0x1 71 72 #define VMD_CONFIG 0x44 73 #define VMD_BYPASS_MSI 0x2 74 #define VMD_BUS_START(x) ((x >> 8) & 0x3) 75 76 #define VMD_LOCK 0x70 77 78 SYSCTL_NODE(_hw, OID_AUTO, vmd, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 79 "Intel Volume Management Device tuning parameters"); 80 81 /* 82 * By default all VMD devices remap children MSI/MSI-X interrupts into their 83 * own. It creates additional isolation, but also complicates things due to 84 * sharing, etc. Fortunately some VMD devices can bypass the remapping. 85 */ 86 static int vmd_bypass_msi = 1; 87 SYSCTL_INT(_hw_vmd, OID_AUTO, bypass_msi, CTLFLAG_RWTUN, &vmd_bypass_msi, 0, 88 "Bypass MSI remapping on capable hardware"); 89 90 /* 91 * All MSIs within a group share address, so VMD can't distinguish them. 92 * It makes no sense to use more than one per device, only if required by 93 * some specific device drivers. 94 */ 95 static int vmd_max_msi = 1; 96 SYSCTL_INT(_hw_vmd, OID_AUTO, max_msi, CTLFLAG_RWTUN, &vmd_max_msi, 0, 97 "Maximum number of MSI vectors per device"); 98 99 /* 100 * MSI-X can use different addresses, but we have limited number of MSI-X 101 * we can route to, so use conservative default to try to avoid sharing. 102 */ 103 static int vmd_max_msix = 3; 104 SYSCTL_INT(_hw_vmd, OID_AUTO, max_msix, CTLFLAG_RWTUN, &vmd_max_msix, 0, 105 "Maximum number of MSI-X vectors per device"); 106 107 static struct vmd_type vmd_devs[] = { 108 { 0x8086, 0x201d, "Intel Volume Management Device", 0 }, 109 { 0x8086, 0x28c0, "Intel Volume Management Device", BUS_RESTRICT | CAN_BYPASS_MSI }, 110 { 0x8086, 0x467f, "Intel Volume Management Device", BUS_RESTRICT | VECTOR_OFFSET }, 111 { 0x8086, 0x4c3d, "Intel Volume Management Device", BUS_RESTRICT | VECTOR_OFFSET }, 112 { 0x8086, 0x7d0b, "Intel Volume Management Device", BUS_RESTRICT | VECTOR_OFFSET }, 113 { 0x8086, 0x9a0b, "Intel Volume Management Device", BUS_RESTRICT | VECTOR_OFFSET }, 114 { 0x8086, 0xa77f, "Intel Volume Management Device", BUS_RESTRICT | VECTOR_OFFSET }, 115 { 0x8086, 0xad0b, "Intel Volume Management Device", BUS_RESTRICT | VECTOR_OFFSET }, 116 { 0, 0, NULL, 0 } 117 }; 118 119 static int 120 vmd_probe(device_t dev) 121 { 122 struct vmd_type *t; 123 uint16_t vid, did; 124 125 vid = pci_get_vendor(dev); 126 did = pci_get_device(dev); 127 for (t = vmd_devs; t->vmd_name != NULL; t++) { 128 if (vid == t->vmd_vid && did == t->vmd_did) { 129 device_set_desc(dev, t->vmd_name); 130 return (BUS_PROBE_DEFAULT); 131 } 132 } 133 return (ENXIO); 134 } 135 136 static void 137 vmd_free(struct vmd_softc *sc) 138 { 139 struct vmd_irq *vi; 140 struct vmd_irq_user *u; 141 int i; 142 143 if (sc->psc.bus.rman.rm_end != 0) 144 rman_fini(&sc->psc.bus.rman); 145 if (sc->psc.mem.rman.rm_end != 0) 146 rman_fini(&sc->psc.mem.rman); 147 while ((u = LIST_FIRST(&sc->vmd_users)) != NULL) { 148 LIST_REMOVE(u, viu_link); 149 free(u, M_DEVBUF); 150 } 151 if (sc->vmd_irq != NULL) { 152 for (i = 0; i < sc->vmd_msix_count; i++) { 153 vi = &sc->vmd_irq[i]; 154 if (vi->vi_res == NULL) 155 continue; 156 bus_teardown_intr(sc->psc.dev, vi->vi_res, 157 vi->vi_handle); 158 bus_release_resource(sc->psc.dev, SYS_RES_IRQ, 159 vi->vi_rid, vi->vi_res); 160 } 161 } 162 free(sc->vmd_irq, M_DEVBUF); 163 sc->vmd_irq = NULL; 164 pci_release_msi(sc->psc.dev); 165 for (i = 0; i < VMD_MAX_BAR; i++) { 166 if (sc->vmd_regs_res[i] != NULL) 167 bus_release_resource(sc->psc.dev, SYS_RES_MEMORY, 168 sc->vmd_regs_rid[i], sc->vmd_regs_res[i]); 169 } 170 } 171 172 /* Hidden PCI Roots are hidden in BAR(0). */ 173 174 static uint32_t 175 vmd_read_config(device_t dev, u_int b, u_int s, u_int f, u_int reg, int width) 176 { 177 struct vmd_softc *sc; 178 bus_addr_t offset; 179 180 sc = device_get_softc(dev); 181 if (b < sc->vmd_bus_start || b > sc->vmd_bus_end) 182 return (0xffffffff); 183 184 offset = ((b - sc->vmd_bus_start) << 20) + (s << 15) + (f << 12) + reg; 185 186 switch (width) { 187 case 4: 188 return (bus_read_4(sc->vmd_regs_res[0], offset)); 189 case 2: 190 return (bus_read_2(sc->vmd_regs_res[0], offset)); 191 case 1: 192 return (bus_read_1(sc->vmd_regs_res[0], offset)); 193 default: 194 __assert_unreachable(); 195 return (0xffffffff); 196 } 197 } 198 199 static void 200 vmd_write_config(device_t dev, u_int b, u_int s, u_int f, u_int reg, 201 uint32_t val, int width) 202 { 203 struct vmd_softc *sc; 204 bus_addr_t offset; 205 206 sc = device_get_softc(dev); 207 if (b < sc->vmd_bus_start || b > sc->vmd_bus_end) 208 return; 209 210 offset = ((b - sc->vmd_bus_start) << 20) + (s << 15) + (f << 12) + reg; 211 212 switch (width) { 213 case 4: 214 return (bus_write_4(sc->vmd_regs_res[0], offset, val)); 215 case 2: 216 return (bus_write_2(sc->vmd_regs_res[0], offset, val)); 217 case 1: 218 return (bus_write_1(sc->vmd_regs_res[0], offset, val)); 219 default: 220 __assert_unreachable(); 221 } 222 } 223 224 static void 225 vmd_set_msi_bypass(device_t dev, bool enable) 226 { 227 uint16_t val; 228 229 val = pci_read_config(dev, VMD_CONFIG, 2); 230 if (enable) 231 val |= VMD_BYPASS_MSI; 232 else 233 val &= ~VMD_BYPASS_MSI; 234 pci_write_config(dev, VMD_CONFIG, val, 2); 235 } 236 237 static int 238 vmd_intr(void *arg) 239 { 240 /* 241 * We have nothing to do here, but we have to register some interrupt 242 * handler to make PCI code setup and enable the MSI-X vector. 243 */ 244 return (FILTER_STRAY); 245 } 246 247 static int 248 vmd_attach(device_t dev) 249 { 250 struct vmd_softc *sc; 251 struct pcib_secbus *bus; 252 struct pcib_window *w; 253 struct vmd_type *t; 254 struct vmd_irq *vi; 255 uint16_t vid, did; 256 uint32_t bar; 257 int i, j, error; 258 char buf[64]; 259 260 sc = device_get_softc(dev); 261 bzero(sc, sizeof(*sc)); 262 sc->psc.dev = dev; 263 sc->psc.domain = PCI_DOMAINMAX - device_get_unit(dev); 264 265 pci_enable_busmaster(dev); 266 267 for (i = 0, j = 0; i < VMD_MAX_BAR; i++, j++) { 268 sc->vmd_regs_rid[i] = PCIR_BAR(j); 269 bar = pci_read_config(dev, PCIR_BAR(0), 4); 270 if (PCI_BAR_MEM(bar) && (bar & PCIM_BAR_MEM_TYPE) == 271 PCIM_BAR_MEM_64) 272 j++; 273 if ((sc->vmd_regs_res[i] = bus_alloc_resource_any(dev, 274 SYS_RES_MEMORY, &sc->vmd_regs_rid[i], RF_ACTIVE)) == NULL) { 275 device_printf(dev, "Cannot allocate resources\n"); 276 goto fail; 277 } 278 } 279 280 vid = pci_get_vendor(dev); 281 did = pci_get_device(dev); 282 for (t = vmd_devs; t->vmd_name != NULL; t++) { 283 if (vid == t->vmd_vid && did == t->vmd_did) 284 break; 285 } 286 287 sc->vmd_bus_start = 0; 288 if ((t->flags & BUS_RESTRICT) && 289 (pci_read_config(dev, VMD_CAP, 2) & VMD_BUS_RESTRICT)) { 290 switch (VMD_BUS_START(pci_read_config(dev, VMD_CONFIG, 2))) { 291 case 0: 292 sc->vmd_bus_start = 0; 293 break; 294 case 1: 295 sc->vmd_bus_start = 128; 296 break; 297 case 2: 298 sc->vmd_bus_start = 224; 299 break; 300 default: 301 device_printf(dev, "Unknown bus offset\n"); 302 goto fail; 303 } 304 } 305 sc->vmd_bus_end = MIN(PCI_BUSMAX, sc->vmd_bus_start + 306 (rman_get_size(sc->vmd_regs_res[0]) >> 20) - 1); 307 308 bus = &sc->psc.bus; 309 bus->sec = sc->vmd_bus_start; 310 bus->sub = sc->vmd_bus_end; 311 bus->dev = dev; 312 bus->rman.rm_start = 0; 313 bus->rman.rm_end = PCI_BUSMAX; 314 bus->rman.rm_type = RMAN_ARRAY; 315 snprintf(buf, sizeof(buf), "%s bus numbers", device_get_nameunit(dev)); 316 bus->rman.rm_descr = strdup(buf, M_DEVBUF); 317 error = rman_init(&bus->rman); 318 if (error) { 319 device_printf(dev, "Failed to initialize bus rman\n"); 320 bus->rman.rm_end = 0; 321 goto fail; 322 } 323 error = rman_manage_region(&bus->rman, sc->vmd_bus_start, 324 sc->vmd_bus_end); 325 if (error) { 326 device_printf(dev, "Failed to add resource to bus rman\n"); 327 goto fail; 328 } 329 330 w = &sc->psc.mem; 331 w->rman.rm_type = RMAN_ARRAY; 332 snprintf(buf, sizeof(buf), "%s memory window", device_get_nameunit(dev)); 333 w->rman.rm_descr = strdup(buf, M_DEVBUF); 334 error = rman_init(&w->rman); 335 if (error) { 336 device_printf(dev, "Failed to initialize memory rman\n"); 337 w->rman.rm_end = 0; 338 goto fail; 339 } 340 error = rman_manage_region(&w->rman, 341 rman_get_start(sc->vmd_regs_res[1]), 342 rman_get_end(sc->vmd_regs_res[1])); 343 if (error) { 344 device_printf(dev, "Failed to add resource to memory rman\n"); 345 goto fail; 346 } 347 error = rman_manage_region(&w->rman, 348 rman_get_start(sc->vmd_regs_res[2]) + 0x2000, 349 rman_get_end(sc->vmd_regs_res[2])); 350 if (error) { 351 device_printf(dev, "Failed to add resource to memory rman\n"); 352 goto fail; 353 } 354 355 LIST_INIT(&sc->vmd_users); 356 sc->vmd_fist_vector = (t->flags & VECTOR_OFFSET) ? 1 : 0; 357 sc->vmd_msix_count = pci_msix_count(dev); 358 if (vmd_bypass_msi && (t->flags & CAN_BYPASS_MSI)) { 359 sc->vmd_msix_count = 0; 360 vmd_set_msi_bypass(dev, true); 361 } else if (pci_alloc_msix(dev, &sc->vmd_msix_count) == 0) { 362 sc->vmd_irq = malloc(sizeof(struct vmd_irq) * 363 sc->vmd_msix_count, M_DEVBUF, M_WAITOK | M_ZERO); 364 for (i = 0; i < sc->vmd_msix_count; i++) { 365 vi = &sc->vmd_irq[i]; 366 vi->vi_rid = i + 1; 367 vi->vi_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 368 &vi->vi_rid, RF_ACTIVE | RF_SHAREABLE); 369 if (vi->vi_res == NULL) { 370 device_printf(dev, "Failed to allocate irq\n"); 371 goto fail; 372 } 373 vi->vi_irq = rman_get_start(vi->vi_res); 374 if (bus_setup_intr(dev, vi->vi_res, INTR_TYPE_MISC | 375 INTR_MPSAFE, vmd_intr, NULL, vi, &vi->vi_handle)) { 376 device_printf(dev, "Can't set up interrupt\n"); 377 bus_release_resource(dev, SYS_RES_IRQ, 378 vi->vi_rid, vi->vi_res); 379 vi->vi_res = NULL; 380 goto fail; 381 } 382 } 383 vmd_set_msi_bypass(dev, false); 384 } 385 386 sc->vmd_dma_tag = bus_get_dma_tag(dev); 387 388 sc->psc.child = device_add_child(dev, "pci", -1); 389 return (bus_generic_attach(dev)); 390 391 fail: 392 vmd_free(sc); 393 return (ENXIO); 394 } 395 396 static int 397 vmd_detach(device_t dev) 398 { 399 struct vmd_softc *sc = device_get_softc(dev); 400 int error; 401 402 error = bus_generic_detach(dev); 403 if (error) 404 return (error); 405 error = device_delete_children(dev); 406 if (error) 407 return (error); 408 if (sc->vmd_msix_count == 0) 409 vmd_set_msi_bypass(dev, false); 410 vmd_free(sc); 411 return (0); 412 } 413 414 static bus_dma_tag_t 415 vmd_get_dma_tag(device_t dev, device_t child) 416 { 417 struct vmd_softc *sc = device_get_softc(dev); 418 419 return (sc->vmd_dma_tag); 420 } 421 422 static struct resource * 423 vmd_alloc_resource(device_t dev, device_t child, int type, int *rid, 424 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 425 { 426 struct vmd_softc *sc = device_get_softc(dev); 427 struct resource *res; 428 429 switch (type) { 430 case SYS_RES_IRQ: 431 /* VMD hardware does not support legacy interrupts. */ 432 if (*rid == 0) 433 return (NULL); 434 return (bus_generic_alloc_resource(dev, child, type, rid, 435 start, end, count, flags | RF_SHAREABLE)); 436 case SYS_RES_MEMORY: 437 res = rman_reserve_resource(&sc->psc.mem.rman, start, end, 438 count, flags, child); 439 if (res == NULL) 440 return (NULL); 441 if (bootverbose) 442 device_printf(dev, 443 "allocated memory range (%#jx-%#jx) for rid %d of %s\n", 444 rman_get_start(res), rman_get_end(res), *rid, 445 pcib_child_name(child)); 446 break; 447 case PCI_RES_BUS: 448 res = rman_reserve_resource(&sc->psc.bus.rman, start, end, 449 count, flags, child); 450 if (res == NULL) 451 return (NULL); 452 if (bootverbose) 453 device_printf(dev, 454 "allocated bus range (%ju-%ju) for rid %d of %s\n", 455 rman_get_start(res), rman_get_end(res), *rid, 456 pcib_child_name(child)); 457 break; 458 default: 459 /* VMD hardware does not support I/O ports. */ 460 return (NULL); 461 } 462 rman_set_rid(res, *rid); 463 return (res); 464 } 465 466 static int 467 vmd_adjust_resource(device_t dev, device_t child, int type, 468 struct resource *r, rman_res_t start, rman_res_t end) 469 { 470 471 if (type == SYS_RES_IRQ) { 472 return (bus_generic_adjust_resource(dev, child, type, r, 473 start, end)); 474 } 475 return (rman_adjust_resource(r, start, end)); 476 } 477 478 static int 479 vmd_release_resource(device_t dev, device_t child, int type, int rid, 480 struct resource *r) 481 { 482 483 if (type == SYS_RES_IRQ) { 484 return (bus_generic_release_resource(dev, child, type, rid, 485 r)); 486 } 487 return (rman_release_resource(r)); 488 } 489 490 static int 491 vmd_route_interrupt(device_t dev, device_t child, int pin) 492 { 493 494 /* VMD hardware does not support legacy interrupts. */ 495 return (PCI_INVALID_IRQ); 496 } 497 498 static int 499 vmd_alloc_msi(device_t dev, device_t child, int count, int maxcount, 500 int *irqs) 501 { 502 struct vmd_softc *sc = device_get_softc(dev); 503 struct vmd_irq_user *u; 504 int i, ibest = 0, best = INT_MAX; 505 506 if (sc->vmd_msix_count == 0) { 507 return (PCIB_ALLOC_MSI(device_get_parent(device_get_parent(dev)), 508 child, count, maxcount, irqs)); 509 } 510 511 if (count > vmd_max_msi) 512 return (ENOSPC); 513 LIST_FOREACH(u, &sc->vmd_users, viu_link) { 514 if (u->viu_child == child) 515 return (EBUSY); 516 } 517 518 for (i = sc->vmd_fist_vector; i < sc->vmd_msix_count; i++) { 519 if (best > sc->vmd_irq[i].vi_nusers) { 520 best = sc->vmd_irq[i].vi_nusers; 521 ibest = i; 522 } 523 } 524 525 u = malloc(sizeof(*u), M_DEVBUF, M_WAITOK | M_ZERO); 526 u->viu_child = child; 527 u->viu_vector = ibest; 528 LIST_INSERT_HEAD(&sc->vmd_users, u, viu_link); 529 sc->vmd_irq[ibest].vi_nusers += count; 530 531 for (i = 0; i < count; i++) 532 irqs[i] = sc->vmd_irq[ibest].vi_irq; 533 return (0); 534 } 535 536 static int 537 vmd_release_msi(device_t dev, device_t child, int count, int *irqs) 538 { 539 struct vmd_softc *sc = device_get_softc(dev); 540 struct vmd_irq_user *u; 541 542 if (sc->vmd_msix_count == 0) { 543 return (PCIB_RELEASE_MSI(device_get_parent(device_get_parent(dev)), 544 child, count, irqs)); 545 } 546 547 LIST_FOREACH(u, &sc->vmd_users, viu_link) { 548 if (u->viu_child == child) { 549 sc->vmd_irq[u->viu_vector].vi_nusers -= count; 550 LIST_REMOVE(u, viu_link); 551 free(u, M_DEVBUF); 552 return (0); 553 } 554 } 555 return (EINVAL); 556 } 557 558 static int 559 vmd_alloc_msix(device_t dev, device_t child, int *irq) 560 { 561 struct vmd_softc *sc = device_get_softc(dev); 562 struct vmd_irq_user *u; 563 int i, ibest = 0, best = INT_MAX; 564 565 if (sc->vmd_msix_count == 0) { 566 return (PCIB_ALLOC_MSIX(device_get_parent(device_get_parent(dev)), 567 child, irq)); 568 } 569 570 i = 0; 571 LIST_FOREACH(u, &sc->vmd_users, viu_link) { 572 if (u->viu_child == child) 573 i++; 574 } 575 if (i >= vmd_max_msix) 576 return (ENOSPC); 577 578 for (i = sc->vmd_fist_vector; i < sc->vmd_msix_count; i++) { 579 if (best > sc->vmd_irq[i].vi_nusers) { 580 best = sc->vmd_irq[i].vi_nusers; 581 ibest = i; 582 } 583 } 584 585 u = malloc(sizeof(*u), M_DEVBUF, M_WAITOK | M_ZERO); 586 u->viu_child = child; 587 u->viu_vector = ibest; 588 LIST_INSERT_HEAD(&sc->vmd_users, u, viu_link); 589 sc->vmd_irq[ibest].vi_nusers++; 590 591 *irq = sc->vmd_irq[ibest].vi_irq; 592 return (0); 593 } 594 595 static int 596 vmd_release_msix(device_t dev, device_t child, int irq) 597 { 598 struct vmd_softc *sc = device_get_softc(dev); 599 struct vmd_irq_user *u; 600 601 if (sc->vmd_msix_count == 0) { 602 return (PCIB_RELEASE_MSIX(device_get_parent(device_get_parent(dev)), 603 child, irq)); 604 } 605 606 LIST_FOREACH(u, &sc->vmd_users, viu_link) { 607 if (u->viu_child == child && 608 sc->vmd_irq[u->viu_vector].vi_irq == irq) { 609 sc->vmd_irq[u->viu_vector].vi_nusers--; 610 LIST_REMOVE(u, viu_link); 611 free(u, M_DEVBUF); 612 return (0); 613 } 614 } 615 return (EINVAL); 616 } 617 618 static int 619 vmd_map_msi(device_t dev, device_t child, int irq, uint64_t *addr, uint32_t *data) 620 { 621 struct vmd_softc *sc = device_get_softc(dev); 622 int i; 623 624 if (sc->vmd_msix_count == 0) { 625 return (PCIB_MAP_MSI(device_get_parent(device_get_parent(dev)), 626 child, irq, addr, data)); 627 } 628 629 for (i = sc->vmd_fist_vector; i < sc->vmd_msix_count; i++) { 630 if (sc->vmd_irq[i].vi_irq == irq) 631 break; 632 } 633 if (i >= sc->vmd_msix_count) 634 return (EINVAL); 635 *addr = MSI_INTEL_ADDR_BASE | (i << 12); 636 *data = 0; 637 return (0); 638 } 639 640 static device_method_t vmd_pci_methods[] = { 641 /* Device interface */ 642 DEVMETHOD(device_probe, vmd_probe), 643 DEVMETHOD(device_attach, vmd_attach), 644 DEVMETHOD(device_detach, vmd_detach), 645 DEVMETHOD(device_suspend, bus_generic_suspend), 646 DEVMETHOD(device_resume, bus_generic_resume), 647 DEVMETHOD(device_shutdown, bus_generic_shutdown), 648 649 /* Bus interface */ 650 DEVMETHOD(bus_get_dma_tag, vmd_get_dma_tag), 651 DEVMETHOD(bus_read_ivar, pcib_read_ivar), 652 DEVMETHOD(bus_write_ivar, pcib_write_ivar), 653 DEVMETHOD(bus_alloc_resource, vmd_alloc_resource), 654 DEVMETHOD(bus_adjust_resource, vmd_adjust_resource), 655 DEVMETHOD(bus_release_resource, vmd_release_resource), 656 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 657 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 658 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 659 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 660 661 /* pcib interface */ 662 DEVMETHOD(pcib_maxslots, pcib_maxslots), 663 DEVMETHOD(pcib_read_config, vmd_read_config), 664 DEVMETHOD(pcib_write_config, vmd_write_config), 665 DEVMETHOD(pcib_route_interrupt, vmd_route_interrupt), 666 DEVMETHOD(pcib_alloc_msi, vmd_alloc_msi), 667 DEVMETHOD(pcib_release_msi, vmd_release_msi), 668 DEVMETHOD(pcib_alloc_msix, vmd_alloc_msix), 669 DEVMETHOD(pcib_release_msix, vmd_release_msix), 670 DEVMETHOD(pcib_map_msi, vmd_map_msi), 671 DEVMETHOD(pcib_request_feature, pcib_request_feature_allow), 672 673 DEVMETHOD_END 674 }; 675 676 DEFINE_CLASS_0(pcib, vmd_pci_driver, vmd_pci_methods, sizeof(struct vmd_softc)); 677 DRIVER_MODULE(vmd, pci, vmd_pci_driver, NULL, NULL); 678 MODULE_PNP_INFO("U16:vendor;U16:device;D:#", pci, vmd, 679 vmd_devs, nitems(vmd_devs) - 1); 680