| 1 | /* $NetBSD: acpi_machdep.c,v 1.14 2016/10/15 16:46:14 jdolecek Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright 2001 Wasabi Systems, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Written by Jason R. Thorpe for Wasabi Systems, Inc. |
| 8 | * |
| 9 | * Redistribution and use in source and binary forms, with or without |
| 10 | * modification, are permitted provided that the following conditions |
| 11 | * are met: |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in the |
| 16 | * documentation and/or other materials provided with the distribution. |
| 17 | * 3. All advertising materials mentioning features or use of this software |
| 18 | * must display the following acknowledgement: |
| 19 | * This product includes software developed for the NetBSD Project by |
| 20 | * Wasabi Systems, Inc. |
| 21 | * 4. The name of Wasabi Systems, Inc. may not be used to endorse |
| 22 | * or promote products derived from this software without specific prior |
| 23 | * written permission. |
| 24 | * |
| 25 | * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND |
| 26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 27 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 28 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC |
| 29 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 32 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 33 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 34 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 35 | * POSSIBILITY OF SUCH DAMAGE. |
| 36 | */ |
| 37 | |
| 38 | /* |
| 39 | * Machine-dependent routines for ACPICA. |
| 40 | */ |
| 41 | |
| 42 | #include <sys/cdefs.h> |
| 43 | __KERNEL_RCSID(0, "$NetBSD: acpi_machdep.c,v 1.14 2016/10/15 16:46:14 jdolecek Exp $" ); |
| 44 | |
| 45 | #include <sys/param.h> |
| 46 | #include <sys/systm.h> |
| 47 | #include <sys/bus.h> |
| 48 | #include <sys/cpu.h> |
| 49 | #include <sys/device.h> |
| 50 | |
| 51 | #include <uvm/uvm_extern.h> |
| 52 | |
| 53 | #include <machine/cpufunc.h> |
| 54 | #include <machine/bootinfo.h> |
| 55 | #include <machine/autoconf.h> |
| 56 | |
| 57 | #include <dev/acpi/acpica.h> |
| 58 | #include <dev/acpi/acpivar.h> |
| 59 | #include <dev/acpi/acpi_mcfg.h> |
| 60 | |
| 61 | #include <machine/acpi_machdep.h> |
| 62 | #include <machine/mpbiosvar.h> |
| 63 | #include <machine/mpacpi.h> |
| 64 | #include <machine/i82093reg.h> |
| 65 | #include <machine/i82093var.h> |
| 66 | #include <machine/pic.h> |
| 67 | |
| 68 | #include <x86/efi.h> |
| 69 | |
| 70 | #include <dev/pci/pcivar.h> |
| 71 | |
| 72 | #include <dev/isa/isareg.h> |
| 73 | #include <dev/isa/isavar.h> |
| 74 | |
| 75 | #include "ioapic.h" |
| 76 | |
| 77 | #include "acpica.h" |
| 78 | #include "opt_mpbios.h" |
| 79 | #include "opt_acpi.h" |
| 80 | #include "opt_vga.h" |
| 81 | |
| 82 | /* |
| 83 | * Default VBIOS reset method for non-HW accelerated VGA drivers. |
| 84 | */ |
| 85 | #ifdef VGA_POST |
| 86 | # define VBIOS_RESET_DEFAULT 2 |
| 87 | #else |
| 88 | # define VBIOS_RESET_DEFAULT 1 |
| 89 | #endif |
| 90 | |
| 91 | ACPI_STATUS |
| 92 | acpi_md_OsInitialize(void) |
| 93 | { |
| 94 | return AE_OK; |
| 95 | } |
| 96 | |
| 97 | ACPI_PHYSICAL_ADDRESS |
| 98 | acpi_md_OsGetRootPointer(void) |
| 99 | { |
| 100 | ACPI_PHYSICAL_ADDRESS PhysicalAddress; |
| 101 | ACPI_STATUS Status; |
| 102 | |
| 103 | #ifndef XEN |
| 104 | /* If EFI is available, attempt to use it to locate the ACPI table. */ |
| 105 | if (efi_probe()) { |
| 106 | PhysicalAddress = efi_getcfgtblpa(&EFI_UUID_ACPI20); |
| 107 | if (!PhysicalAddress) |
| 108 | PhysicalAddress = efi_getcfgtblpa(&EFI_UUID_ACPI10); |
| 109 | if (PhysicalAddress) |
| 110 | return PhysicalAddress; |
| 111 | } |
| 112 | |
| 113 | #endif |
| 114 | Status = AcpiFindRootPointer(&PhysicalAddress); |
| 115 | if (ACPI_FAILURE(Status)) |
| 116 | PhysicalAddress = 0; |
| 117 | |
| 118 | return PhysicalAddress; |
| 119 | } |
| 120 | |
| 121 | struct acpi_md_override { |
| 122 | int irq; |
| 123 | int pin; |
| 124 | int flags; |
| 125 | }; |
| 126 | |
| 127 | #if NIOAPIC > 0 |
| 128 | static ACPI_STATUS |
| 129 | acpi_md_findoverride(ACPI_SUBTABLE_HEADER *hdrp, void *aux) |
| 130 | { |
| 131 | ACPI_MADT_INTERRUPT_OVERRIDE *iop; |
| 132 | struct acpi_md_override *ovrp; |
| 133 | |
| 134 | if (hdrp->Type != ACPI_MADT_TYPE_INTERRUPT_OVERRIDE) { |
| 135 | return AE_OK; |
| 136 | } |
| 137 | |
| 138 | iop = (void *)hdrp; |
| 139 | ovrp = aux; |
| 140 | if (iop->SourceIrq == ovrp->irq) { |
| 141 | ovrp->pin = iop->GlobalIrq; |
| 142 | ovrp->flags = iop->IntiFlags; |
| 143 | } |
| 144 | return AE_OK; |
| 145 | } |
| 146 | #endif |
| 147 | |
| 148 | ACPI_STATUS |
| 149 | acpi_md_OsInstallInterruptHandler(uint32_t InterruptNumber, |
| 150 | ACPI_OSD_HANDLER ServiceRoutine, void *Context, void **cookiep) |
| 151 | { |
| 152 | void *ih; |
| 153 | struct pic *pic; |
| 154 | #if NIOAPIC > 0 |
| 155 | struct ioapic_softc *sc; |
| 156 | struct acpi_md_override ovr; |
| 157 | struct mp_intr_map tmpmap, *mip, **mipp = NULL; |
| 158 | #endif |
| 159 | int irq, pin, type, redir, mpflags; |
| 160 | |
| 161 | /* |
| 162 | * ACPI interrupts default to level-triggered active-low. |
| 163 | */ |
| 164 | |
| 165 | type = IST_LEVEL; |
| 166 | mpflags = (MPS_INTTR_LEVEL << 2) | MPS_INTPO_ACTLO; |
| 167 | redir = IOAPIC_REDLO_LEVEL | IOAPIC_REDLO_ACTLO; |
| 168 | |
| 169 | #if NIOAPIC > 0 |
| 170 | |
| 171 | /* |
| 172 | * Apply any MADT override setting. |
| 173 | */ |
| 174 | |
| 175 | ovr.irq = InterruptNumber; |
| 176 | ovr.pin = -1; |
| 177 | if (acpi_madt_map() == AE_OK) { |
| 178 | acpi_madt_walk(acpi_md_findoverride, &ovr); |
| 179 | acpi_madt_unmap(); |
| 180 | } else { |
| 181 | aprint_debug("acpi_madt_map() failed, can't check for MADT override\n" ); |
| 182 | } |
| 183 | |
| 184 | if (ovr.pin != -1) { |
| 185 | bool sci = InterruptNumber == AcpiGbl_FADT.SciInterrupt; |
| 186 | int polarity = ovr.flags & ACPI_MADT_POLARITY_MASK; |
| 187 | int trigger = ovr.flags & ACPI_MADT_TRIGGER_MASK; |
| 188 | |
| 189 | InterruptNumber = ovr.pin; |
| 190 | if (polarity == ACPI_MADT_POLARITY_ACTIVE_HIGH || |
| 191 | (!sci && polarity == ACPI_MADT_POLARITY_CONFORMS)) { |
| 192 | mpflags &= ~MPS_INTPO_ACTLO; |
| 193 | mpflags |= MPS_INTPO_ACTHI; |
| 194 | redir &= ~IOAPIC_REDLO_ACTLO; |
| 195 | } |
| 196 | if (trigger == ACPI_MADT_TRIGGER_EDGE || |
| 197 | (!sci && trigger == ACPI_MADT_TRIGGER_CONFORMS)) { |
| 198 | type = IST_EDGE; |
| 199 | mpflags &= ~(MPS_INTTR_LEVEL << 2); |
| 200 | mpflags |= (MPS_INTTR_EDGE << 2); |
| 201 | redir &= ~IOAPIC_REDLO_LEVEL; |
| 202 | } |
| 203 | } |
| 204 | |
| 205 | /* |
| 206 | * If the interrupt is handled via IOAPIC, update the map. |
| 207 | * If the map isn't set up yet, install a temporary one. |
| 208 | */ |
| 209 | |
| 210 | sc = ioapic_find_bybase(InterruptNumber); |
| 211 | if (sc != NULL) { |
| 212 | pic = &sc->sc_pic; |
| 213 | |
| 214 | if (pic->pic_type == PIC_IOAPIC) { |
| 215 | pin = (int)InterruptNumber - pic->pic_vecbase; |
| 216 | irq = -1; |
| 217 | } else { |
| 218 | irq = pin = (int)InterruptNumber; |
| 219 | } |
| 220 | |
| 221 | mip = sc->sc_pins[pin].ip_map; |
| 222 | if (mip) { |
| 223 | mip->flags &= ~0xf; |
| 224 | mip->flags |= mpflags; |
| 225 | mip->redir &= ~(IOAPIC_REDLO_LEVEL | |
| 226 | IOAPIC_REDLO_ACTLO); |
| 227 | mip->redir |= redir; |
| 228 | } else { |
| 229 | mipp = &sc->sc_pins[pin].ip_map; |
| 230 | *mipp = &tmpmap; |
| 231 | tmpmap.redir = redir; |
| 232 | tmpmap.flags = mpflags; |
| 233 | } |
| 234 | } else |
| 235 | #endif |
| 236 | { |
| 237 | pic = &i8259_pic; |
| 238 | irq = pin = (int)InterruptNumber; |
| 239 | } |
| 240 | |
| 241 | /* |
| 242 | * XXX probably, IPL_BIO is enough. |
| 243 | */ |
| 244 | ih = intr_establish_xname(irq, pic, pin, type, IPL_TTY, |
| 245 | (int (*)(void *)) ServiceRoutine, Context, false, "acpi SCI" ); |
| 246 | |
| 247 | #if NIOAPIC > 0 |
| 248 | if (mipp) { |
| 249 | *mipp = NULL; |
| 250 | } |
| 251 | #endif |
| 252 | |
| 253 | if (ih == NULL) |
| 254 | return AE_NO_MEMORY; |
| 255 | |
| 256 | *cookiep = ih; |
| 257 | |
| 258 | return AE_OK; |
| 259 | } |
| 260 | |
| 261 | void |
| 262 | acpi_md_OsRemoveInterruptHandler(void *cookie) |
| 263 | { |
| 264 | intr_disestablish(cookie); |
| 265 | } |
| 266 | |
| 267 | ACPI_STATUS |
| 268 | acpi_md_OsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress, |
| 269 | uint32_t Length, void **LogicalAddress) |
| 270 | { |
| 271 | int rv; |
| 272 | |
| 273 | rv = _x86_memio_map(x86_bus_space_mem, PhysicalAddress, |
| 274 | Length, 0, (bus_space_handle_t *)LogicalAddress); |
| 275 | |
| 276 | return (rv != 0) ? AE_NO_MEMORY : AE_OK; |
| 277 | } |
| 278 | |
| 279 | void |
| 280 | acpi_md_OsUnmapMemory(void *LogicalAddress, uint32_t Length) |
| 281 | { |
| 282 | (void) _x86_memio_unmap(x86_bus_space_mem, |
| 283 | (bus_space_handle_t)LogicalAddress, Length, NULL); |
| 284 | } |
| 285 | |
| 286 | ACPI_STATUS |
| 287 | acpi_md_OsGetPhysicalAddress(void *LogicalAddress, |
| 288 | ACPI_PHYSICAL_ADDRESS *PhysicalAddress) |
| 289 | { |
| 290 | paddr_t pa; |
| 291 | |
| 292 | if (pmap_extract(pmap_kernel(), (vaddr_t) LogicalAddress, &pa)) { |
| 293 | *PhysicalAddress = pa; |
| 294 | return AE_OK; |
| 295 | } |
| 296 | |
| 297 | return AE_ERROR; |
| 298 | } |
| 299 | |
| 300 | BOOLEAN |
| 301 | acpi_md_OsReadable(void *Pointer, uint32_t Length) |
| 302 | { |
| 303 | BOOLEAN rv = TRUE; |
| 304 | vaddr_t sva, eva; |
| 305 | pt_entry_t *pte; |
| 306 | |
| 307 | sva = trunc_page((vaddr_t) Pointer); |
| 308 | eva = round_page((vaddr_t) Pointer + Length); |
| 309 | |
| 310 | if (sva < VM_MIN_KERNEL_ADDRESS) |
| 311 | return FALSE; |
| 312 | |
| 313 | for (; sva < eva; sva += PAGE_SIZE) { |
| 314 | pte = kvtopte(sva); |
| 315 | if ((*pte & PG_V) == 0) { |
| 316 | rv = FALSE; |
| 317 | break; |
| 318 | } |
| 319 | } |
| 320 | |
| 321 | return rv; |
| 322 | } |
| 323 | |
| 324 | BOOLEAN |
| 325 | acpi_md_OsWritable(void *Pointer, uint32_t Length) |
| 326 | { |
| 327 | BOOLEAN rv = TRUE; |
| 328 | vaddr_t sva, eva; |
| 329 | pt_entry_t *pte; |
| 330 | |
| 331 | sva = trunc_page((vaddr_t) Pointer); |
| 332 | eva = round_page((vaddr_t) Pointer + Length); |
| 333 | |
| 334 | if (sva < VM_MIN_KERNEL_ADDRESS) |
| 335 | return FALSE; |
| 336 | |
| 337 | for (; sva < eva; sva += PAGE_SIZE) { |
| 338 | pte = kvtopte(sva); |
| 339 | if ((*pte & (PG_V|PG_W)) != (PG_V|PG_W)) { |
| 340 | rv = FALSE; |
| 341 | break; |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | return rv; |
| 346 | } |
| 347 | |
| 348 | void |
| 349 | acpi_md_OsDisableInterrupt(void) |
| 350 | { |
| 351 | x86_disable_intr(); |
| 352 | } |
| 353 | |
| 354 | void |
| 355 | acpi_md_OsEnableInterrupt(void) |
| 356 | { |
| 357 | x86_enable_intr(); |
| 358 | } |
| 359 | |
| 360 | uint32_t |
| 361 | acpi_md_ncpus(void) |
| 362 | { |
| 363 | return kcpuset_countset(kcpuset_attached); |
| 364 | } |
| 365 | |
| 366 | static bool |
| 367 | acpi_md_mcfg_validate(uint64_t addr, int bus_start, int *bus_end) |
| 368 | { |
| 369 | struct btinfo_memmap *bim; |
| 370 | uint64_t size, mapaddr, mapsize; |
| 371 | uint32_t type; |
| 372 | int i, n; |
| 373 | |
| 374 | bim = lookup_bootinfo(BTINFO_MEMMAP); |
| 375 | if (bim == NULL) |
| 376 | return false; |
| 377 | |
| 378 | size = *bus_end - bus_start + 1; |
| 379 | size *= ACPIMCFG_SIZE_PER_BUS; |
| 380 | for (i = 0; i < bim->num; i++) { |
| 381 | mapaddr = bim->entry[i].addr; |
| 382 | mapsize = bim->entry[i].size; |
| 383 | type = bim->entry[i].type; |
| 384 | |
| 385 | aprint_debug("MCFG: MEMMAP: 0x%016" PRIx64 "-0x%016" PRIx64 |
| 386 | ", size=0x%016" PRIx64 ", type=%d(%s)\n" , |
| 387 | mapaddr, mapaddr + mapsize - 1, mapsize, type, |
| 388 | (type == BIM_Memory) ? "Memory" : |
| 389 | (type == BIM_Reserved) ? "Reserved" : |
| 390 | (type == BIM_ACPI) ? "ACPI" : |
| 391 | (type == BIM_NVS) ? "NVS" : |
| 392 | "unknown" ); |
| 393 | |
| 394 | switch (type) { |
| 395 | case BIM_ACPI: |
| 396 | case BIM_Reserved: |
| 397 | if (addr < mapaddr || addr >= mapaddr + mapsize) |
| 398 | break; |
| 399 | |
| 400 | /* full map */ |
| 401 | if (addr + size <= mapaddr + mapsize) |
| 402 | return true; |
| 403 | |
| 404 | /* partial map */ |
| 405 | n = (mapsize - (addr - mapaddr)) / |
| 406 | ACPIMCFG_SIZE_PER_BUS; |
| 407 | /* bus_start == bus_end is not allowed. */ |
| 408 | if (n > 1) { |
| 409 | *bus_end = bus_start + n - 1; |
| 410 | return true; |
| 411 | } |
| 412 | aprint_debug("MCFG: bus %d-%d, address 0x%016" PRIx64 |
| 413 | ": invalid size: request 0x%016" PRIx64 ", " |
| 414 | "actual 0x%016" PRIx64 "\n" , |
| 415 | bus_start, *bus_end, addr, size, mapsize); |
| 416 | break; |
| 417 | } |
| 418 | } |
| 419 | aprint_debug("MCFG: bus %d-%d, address 0x%016" PRIx64 ": " |
| 420 | "no valid region\n" , bus_start, *bus_end, addr); |
| 421 | return false; |
| 422 | } |
| 423 | |
| 424 | static uint32_t |
| 425 | acpi_md_mcfg_read(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t addr) |
| 426 | { |
| 427 | vaddr_t va = bsh + addr; |
| 428 | uint32_t data = (uint32_t) -1; |
| 429 | |
| 430 | KASSERT(bst == x86_bus_space_mem); |
| 431 | |
| 432 | __asm("movl %1, %0" : "=a" (data) : "m" (*(volatile uint32_t *)va)); |
| 433 | |
| 434 | return data; |
| 435 | } |
| 436 | |
| 437 | static void |
| 438 | acpi_md_mcfg_write(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t addr, |
| 439 | uint32_t data) |
| 440 | { |
| 441 | vaddr_t va = bsh + addr; |
| 442 | |
| 443 | KASSERT(bst == x86_bus_space_mem); |
| 444 | |
| 445 | __asm("movl %1, %0" : "=m" (*(volatile uint32_t *)va) : "a" (data)); |
| 446 | } |
| 447 | |
| 448 | static const struct acpimcfg_ops acpi_md_mcfg_ops = { |
| 449 | .ao_validate = acpi_md_mcfg_validate, |
| 450 | |
| 451 | .ao_read = acpi_md_mcfg_read, |
| 452 | .ao_write = acpi_md_mcfg_write, |
| 453 | }; |
| 454 | |
| 455 | void |
| 456 | acpi_md_callback(struct acpi_softc *sc) |
| 457 | { |
| 458 | #ifdef MPBIOS |
| 459 | if (!mpbios_scanned) |
| 460 | #endif |
| 461 | mpacpi_find_interrupts(sc); |
| 462 | |
| 463 | #ifndef XEN |
| 464 | acpi_md_sleep_init(); |
| 465 | #endif |
| 466 | |
| 467 | acpimcfg_init(x86_bus_space_mem, &acpi_md_mcfg_ops); |
| 468 | } |
| 469 | |
| 470 | #ifndef XEN |
| 471 | void |
| 472 | device_acpi_register(device_t dev, void *aux) |
| 473 | { |
| 474 | device_t parent; |
| 475 | bool device_is_vga, device_is_pci, device_is_isa; |
| 476 | |
| 477 | parent = device_parent(dev); |
| 478 | if (parent == NULL) |
| 479 | return; |
| 480 | |
| 481 | device_is_vga = device_is_a(dev, "vga" ) || device_is_a(dev, "genfb" ); |
| 482 | device_is_pci = device_is_a(parent, "pci" ); |
| 483 | device_is_isa = device_is_a(parent, "isa" ); |
| 484 | |
| 485 | if (device_is_vga && (device_is_pci || device_is_isa)) { |
| 486 | extern int acpi_md_vbios_reset; |
| 487 | |
| 488 | acpi_md_vbios_reset = VBIOS_RESET_DEFAULT; |
| 489 | } |
| 490 | } |
| 491 | #endif |
| 492 | |