1236772Siwasaki/*- 2236772Siwasaki * Copyright (c) 2001 Takanori Watanabe <takawata@jp.freebsd.org> 3236772Siwasaki * Copyright (c) 2001-2012 Mitsuru IWASAKI <iwasaki@jp.freebsd.org> 4236772Siwasaki * Copyright (c) 2003 Peter Wemm 5236772Siwasaki * Copyright (c) 2008-2012 Jung-uk Kim <jkim@FreeBSD.org> 6236772Siwasaki * All rights reserved. 7236772Siwasaki * 8236772Siwasaki * Redistribution and use in source and binary forms, with or without 9236772Siwasaki * modification, are permitted provided that the following conditions 10236772Siwasaki * are met: 11236772Siwasaki * 1. Redistributions of source code must retain the above copyright 12236772Siwasaki * notice, this list of conditions and the following disclaimer. 13236772Siwasaki * 2. Redistributions in binary form must reproduce the above copyright 14236772Siwasaki * notice, this list of conditions and the following disclaimer in the 15236772Siwasaki * documentation and/or other materials provided with the distribution. 16236772Siwasaki * 17236772Siwasaki * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18236772Siwasaki * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19236772Siwasaki * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20236772Siwasaki * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21236772Siwasaki * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22236772Siwasaki * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23236772Siwasaki * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24236772Siwasaki * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25236772Siwasaki * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26236772Siwasaki * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27236772Siwasaki * SUCH DAMAGE. 28236772Siwasaki */ 29236772Siwasaki 30236772Siwasaki#include <sys/cdefs.h> 31236772Siwasaki__FBSDID("$FreeBSD$"); 32236772Siwasaki 33236772Siwasaki#include <sys/param.h> 34236772Siwasaki#include <sys/bus.h> 35236772Siwasaki#include <sys/eventhandler.h> 36236772Siwasaki#include <sys/kernel.h> 37236772Siwasaki#include <sys/malloc.h> 38236772Siwasaki#include <sys/memrange.h> 39236772Siwasaki#include <sys/smp.h> 40236772Siwasaki 41236772Siwasaki#include <vm/vm.h> 42236772Siwasaki#include <vm/pmap.h> 43236772Siwasaki 44236772Siwasaki#include <machine/clock.h> 45236772Siwasaki#include <machine/intr_machdep.h> 46236772Siwasaki#include <x86/mca.h> 47236772Siwasaki#include <machine/pcb.h> 48236772Siwasaki#include <machine/pmap.h> 49236772Siwasaki#include <machine/specialreg.h> 50236772Siwasaki#include <machine/md_var.h> 51236772Siwasaki 52236772Siwasaki#ifdef SMP 53236772Siwasaki#include <x86/apicreg.h> 54236772Siwasaki#include <machine/smp.h> 55236772Siwasaki#include <machine/vmparam.h> 56236772Siwasaki#endif 57236772Siwasaki 58236772Siwasaki#include <contrib/dev/acpica/include/acpi.h> 59236772Siwasaki 60236772Siwasaki#include <dev/acpica/acpivar.h> 61236772Siwasaki 62236772Siwasaki#include "acpi_wakecode.h" 63236772Siwasaki#include "acpi_wakedata.h" 64236772Siwasaki 65236772Siwasaki/* Make sure the code is less than a page and leave room for the stack. */ 66236772SiwasakiCTASSERT(sizeof(wakecode) < PAGE_SIZE - 1024); 67236772Siwasaki 68236772Siwasakiextern int acpi_resume_beep; 69236772Siwasakiextern int acpi_reset_video; 70236772Siwasaki 71236772Siwasaki#ifdef SMP 72236772Siwasakiextern struct pcb **susppcbs; 73236772Siwasakistatic cpuset_t suspcpus; 74236772Siwasaki#else 75236772Siwasakistatic struct pcb **susppcbs; 76236772Siwasaki#endif 77236772Siwasaki 78236772Siwasakistatic void *acpi_alloc_wakeup_handler(void); 79236772Siwasakistatic void acpi_stop_beep(void *); 80236772Siwasaki 81236772Siwasaki#ifdef SMP 82236772Siwasakistatic int acpi_wakeup_ap(struct acpi_softc *, int); 83236772Siwasakistatic void acpi_wakeup_cpus(struct acpi_softc *); 84236772Siwasaki#endif 85236772Siwasaki 86236772Siwasaki#ifdef __amd64__ 87236772Siwasaki#define ACPI_PAGETABLES 3 88236772Siwasaki#else 89236772Siwasaki#define ACPI_PAGETABLES 0 90236772Siwasaki#endif 91236772Siwasaki 92237037Sjkim#define WAKECODE_VADDR(sc) \ 93237037Sjkim ((sc)->acpi_wakeaddr + (ACPI_PAGETABLES * PAGE_SIZE)) 94237037Sjkim#define WAKECODE_PADDR(sc) \ 95237037Sjkim ((sc)->acpi_wakephys + (ACPI_PAGETABLES * PAGE_SIZE)) 96237037Sjkim#define WAKECODE_FIXUP(offset, type, val) do { \ 97236772Siwasaki type *addr; \ 98236772Siwasaki addr = (type *)(WAKECODE_VADDR(sc) + offset); \ 99236772Siwasaki *addr = val; \ 100236772Siwasaki} while (0) 101236772Siwasaki 102236772Siwasakistatic void 103236772Siwasakiacpi_stop_beep(void *arg) 104236772Siwasaki{ 105236772Siwasaki 106236772Siwasaki if (acpi_resume_beep != 0) 107236772Siwasaki timer_spkr_release(); 108236772Siwasaki} 109236772Siwasaki 110236772Siwasaki#ifdef SMP 111236772Siwasakistatic int 112236772Siwasakiacpi_wakeup_ap(struct acpi_softc *sc, int cpu) 113236772Siwasaki{ 114236772Siwasaki int vector = (WAKECODE_PADDR(sc) >> 12) & 0xff; 115236772Siwasaki int apic_id = cpu_apic_ids[cpu]; 116236772Siwasaki int ms; 117236772Siwasaki 118236772Siwasaki WAKECODE_FIXUP(wakeup_pcb, struct pcb *, susppcbs[cpu]); 119236772Siwasaki WAKECODE_FIXUP(wakeup_gdt, uint16_t, susppcbs[cpu]->pcb_gdt.rd_limit); 120236772Siwasaki WAKECODE_FIXUP(wakeup_gdt + 2, uint64_t, 121236772Siwasaki susppcbs[cpu]->pcb_gdt.rd_base); 122236772Siwasaki 123236938Siwasaki ipi_startup(apic_id, vector); 124236772Siwasaki 125236772Siwasaki /* Wait up to 5 seconds for it to resume. */ 126236772Siwasaki for (ms = 0; ms < 5000; ms++) { 127236772Siwasaki if (!CPU_ISSET(cpu, &suspended_cpus)) 128236772Siwasaki return (1); /* return SUCCESS */ 129236772Siwasaki DELAY(1000); 130236772Siwasaki } 131236772Siwasaki return (0); /* return FAILURE */ 132236772Siwasaki} 133236772Siwasaki 134236772Siwasaki#define WARMBOOT_TARGET 0 135236772Siwasaki#define WARMBOOT_OFF (KERNBASE + 0x0467) 136236772Siwasaki#define WARMBOOT_SEG (KERNBASE + 0x0469) 137236772Siwasaki 138236772Siwasaki#define CMOS_REG (0x70) 139236772Siwasaki#define CMOS_DATA (0x71) 140236772Siwasaki#define BIOS_RESET (0x0f) 141236772Siwasaki#define BIOS_WARM (0x0a) 142236772Siwasaki 143236772Siwasakistatic void 144236772Siwasakiacpi_wakeup_cpus(struct acpi_softc *sc) 145236772Siwasaki{ 146236772Siwasaki uint32_t mpbioswarmvec; 147236772Siwasaki int cpu; 148236772Siwasaki u_char mpbiosreason; 149236772Siwasaki 150236772Siwasaki /* save the current value of the warm-start vector */ 151236772Siwasaki mpbioswarmvec = *((uint32_t *)WARMBOOT_OFF); 152236772Siwasaki outb(CMOS_REG, BIOS_RESET); 153236772Siwasaki mpbiosreason = inb(CMOS_DATA); 154236772Siwasaki 155236772Siwasaki /* setup a vector to our boot code */ 156236772Siwasaki *((volatile u_short *)WARMBOOT_OFF) = WARMBOOT_TARGET; 157236772Siwasaki *((volatile u_short *)WARMBOOT_SEG) = WAKECODE_PADDR(sc) >> 4; 158236772Siwasaki outb(CMOS_REG, BIOS_RESET); 159236772Siwasaki outb(CMOS_DATA, BIOS_WARM); /* 'warm-start' */ 160236772Siwasaki 161236772Siwasaki /* Wake up each AP. */ 162236772Siwasaki for (cpu = 1; cpu < mp_ncpus; cpu++) { 163236772Siwasaki if (!CPU_ISSET(cpu, &suspcpus)) 164236772Siwasaki continue; 165236772Siwasaki if (acpi_wakeup_ap(sc, cpu) == 0) { 166236772Siwasaki /* restore the warmstart vector */ 167236772Siwasaki *(uint32_t *)WARMBOOT_OFF = mpbioswarmvec; 168236772Siwasaki panic("acpi_wakeup: failed to resume AP #%d (PHY #%d)", 169236772Siwasaki cpu, cpu_apic_ids[cpu]); 170236772Siwasaki } 171236772Siwasaki } 172236772Siwasaki 173236772Siwasaki /* restore the warmstart vector */ 174236772Siwasaki *(uint32_t *)WARMBOOT_OFF = mpbioswarmvec; 175236772Siwasaki 176236772Siwasaki outb(CMOS_REG, BIOS_RESET); 177236772Siwasaki outb(CMOS_DATA, mpbiosreason); 178236772Siwasaki} 179236772Siwasaki#endif 180236772Siwasaki 181236772Siwasakiint 182236772Siwasakiacpi_sleep_machdep(struct acpi_softc *sc, int state) 183236772Siwasaki{ 184236772Siwasaki ACPI_STATUS status; 185236772Siwasaki 186236772Siwasaki if (sc->acpi_wakeaddr == 0ul) 187236772Siwasaki return (-1); /* couldn't alloc wake memory */ 188236772Siwasaki 189236772Siwasaki#ifdef SMP 190236772Siwasaki suspcpus = all_cpus; 191236772Siwasaki CPU_CLR(PCPU_GET(cpuid), &suspcpus); 192236772Siwasaki#endif 193236772Siwasaki 194236772Siwasaki if (acpi_resume_beep != 0) 195236772Siwasaki timer_spkr_acquire(); 196236772Siwasaki 197236772Siwasaki AcpiSetFirmwareWakingVector(WAKECODE_PADDR(sc)); 198236772Siwasaki 199236772Siwasaki intr_suspend(); 200236772Siwasaki 201236772Siwasaki if (savectx(susppcbs[0])) { 202236772Siwasaki#ifdef __amd64__ 203236772Siwasaki ctx_fpusave(susppcbs[0]->pcb_fpususpend); 204236772Siwasaki#endif 205236772Siwasaki#ifdef SMP 206236772Siwasaki if (!CPU_EMPTY(&suspcpus) && suspend_cpus(suspcpus) == 0) { 207236772Siwasaki device_printf(sc->acpi_dev, "Failed to suspend APs\n"); 208236772Siwasaki return (0); /* couldn't sleep */ 209236772Siwasaki } 210236772Siwasaki#endif 211236772Siwasaki 212236772Siwasaki WAKECODE_FIXUP(resume_beep, uint8_t, (acpi_resume_beep != 0)); 213236772Siwasaki WAKECODE_FIXUP(reset_video, uint8_t, (acpi_reset_video != 0)); 214236772Siwasaki 215237037Sjkim#ifndef __amd64__ 216236772Siwasaki WAKECODE_FIXUP(wakeup_cr4, register_t, susppcbs[0]->pcb_cr4); 217237037Sjkim#endif 218236772Siwasaki WAKECODE_FIXUP(wakeup_pcb, struct pcb *, susppcbs[0]); 219236772Siwasaki WAKECODE_FIXUP(wakeup_gdt, uint16_t, 220236772Siwasaki susppcbs[0]->pcb_gdt.rd_limit); 221236772Siwasaki WAKECODE_FIXUP(wakeup_gdt + 2, uint64_t, 222236772Siwasaki susppcbs[0]->pcb_gdt.rd_base); 223236772Siwasaki 224236772Siwasaki /* Call ACPICA to enter the desired sleep state */ 225236772Siwasaki if (state == ACPI_STATE_S4 && sc->acpi_s4bios) 226236772Siwasaki status = AcpiEnterSleepStateS4bios(); 227236772Siwasaki else 228239340Sjkim status = AcpiEnterSleepState(state); 229236772Siwasaki if (ACPI_FAILURE(status)) { 230236772Siwasaki device_printf(sc->acpi_dev, 231236772Siwasaki "AcpiEnterSleepState failed - %s\n", 232236772Siwasaki AcpiFormatException(status)); 233236772Siwasaki return (0); /* couldn't sleep */ 234236772Siwasaki } 235236772Siwasaki 236236772Siwasaki for (;;) 237236772Siwasaki ia32_pause(); 238236772Siwasaki } 239236772Siwasaki 240236772Siwasaki return (1); /* wakeup successfully */ 241236772Siwasaki} 242236772Siwasaki 243236772Siwasakiint 244236772Siwasakiacpi_wakeup_machdep(struct acpi_softc *sc, int state, int sleep_result, 245236772Siwasaki int intr_enabled) 246236772Siwasaki{ 247236772Siwasaki 248236772Siwasaki if (sleep_result == -1) 249236772Siwasaki return (sleep_result); 250236772Siwasaki 251236772Siwasaki if (!intr_enabled) { 252236772Siwasaki /* Wakeup MD procedures in interrupt disabled context */ 253236772Siwasaki if (sleep_result == 1) { 254236772Siwasaki pmap_init_pat(); 255236772Siwasaki initializecpu(); 256236772Siwasaki PCPU_SET(switchtime, 0); 257236772Siwasaki PCPU_SET(switchticks, ticks); 258236772Siwasaki#ifdef SMP 259236772Siwasaki if (!CPU_EMPTY(&suspcpus)) 260236772Siwasaki acpi_wakeup_cpus(sc); 261236772Siwasaki#endif 262236772Siwasaki } 263236772Siwasaki 264236772Siwasaki#ifdef SMP 265236772Siwasaki if (!CPU_EMPTY(&suspcpus)) 266236772Siwasaki restart_cpus(suspcpus); 267236772Siwasaki#endif 268236772Siwasaki mca_resume(); 269255726Sgibbs intr_resume(/*suspend_cancelled*/false); 270236772Siwasaki 271236772Siwasaki AcpiSetFirmwareWakingVector(0); 272236772Siwasaki } else { 273236772Siwasaki /* Wakeup MD procedures in interrupt enabled context */ 274236772Siwasaki if (sleep_result == 1 && mem_range_softc.mr_op != NULL && 275236772Siwasaki mem_range_softc.mr_op->reinit != NULL) 276236772Siwasaki mem_range_softc.mr_op->reinit(&mem_range_softc); 277236772Siwasaki } 278236772Siwasaki 279236772Siwasaki return (sleep_result); 280236772Siwasaki} 281236772Siwasaki 282236772Siwasakistatic void * 283236772Siwasakiacpi_alloc_wakeup_handler(void) 284236772Siwasaki{ 285236772Siwasaki void *wakeaddr; 286236772Siwasaki int i; 287236772Siwasaki 288236772Siwasaki /* 289236772Siwasaki * Specify the region for our wakeup code. We want it in the low 1 MB 290236772Siwasaki * region, excluding real mode IVT (0-0x3ff), BDA (0x400-0x4ff), EBDA 291236772Siwasaki * (less than 128KB, below 0xa0000, must be excluded by SMAP and DSDT), 292236772Siwasaki * and ROM area (0xa0000 and above). The temporary page tables must be 293236772Siwasaki * page-aligned. 294236772Siwasaki */ 295236772Siwasaki wakeaddr = contigmalloc((ACPI_PAGETABLES + 1) * PAGE_SIZE, M_DEVBUF, 296236772Siwasaki M_WAITOK, 0x500, 0xa0000, PAGE_SIZE, 0ul); 297236772Siwasaki if (wakeaddr == NULL) { 298236772Siwasaki printf("%s: can't alloc wake memory\n", __func__); 299236772Siwasaki return (NULL); 300236772Siwasaki } 301236772Siwasaki if (EVENTHANDLER_REGISTER(power_resume, acpi_stop_beep, NULL, 302236772Siwasaki EVENTHANDLER_PRI_LAST) == NULL) { 303236772Siwasaki printf("%s: can't register event handler\n", __func__); 304237037Sjkim contigfree(wakeaddr, (ACPI_PAGETABLES + 1) * PAGE_SIZE, 305237037Sjkim M_DEVBUF); 306236772Siwasaki return (NULL); 307236772Siwasaki } 308236772Siwasaki susppcbs = malloc(mp_ncpus * sizeof(*susppcbs), M_DEVBUF, M_WAITOK); 309236772Siwasaki for (i = 0; i < mp_ncpus; i++) { 310236772Siwasaki susppcbs[i] = malloc(sizeof(**susppcbs), M_DEVBUF, M_WAITOK); 311236772Siwasaki#ifdef __amd64__ 312236772Siwasaki susppcbs[i]->pcb_fpususpend = alloc_fpusave(M_WAITOK); 313236772Siwasaki#endif 314236772Siwasaki } 315236772Siwasaki 316236772Siwasaki return (wakeaddr); 317236772Siwasaki} 318236772Siwasaki 319236772Siwasakivoid 320236772Siwasakiacpi_install_wakeup_handler(struct acpi_softc *sc) 321236772Siwasaki{ 322236772Siwasaki static void *wakeaddr = NULL; 323236772Siwasaki#ifdef __amd64__ 324236772Siwasaki uint64_t *pt4, *pt3, *pt2; 325236772Siwasaki int i; 326236772Siwasaki#endif 327236772Siwasaki 328236772Siwasaki if (wakeaddr != NULL) 329236772Siwasaki return; 330236772Siwasaki 331236772Siwasaki wakeaddr = acpi_alloc_wakeup_handler(); 332236772Siwasaki if (wakeaddr == NULL) 333236772Siwasaki return; 334236772Siwasaki 335236772Siwasaki sc->acpi_wakeaddr = (vm_offset_t)wakeaddr; 336236772Siwasaki sc->acpi_wakephys = vtophys(wakeaddr); 337236772Siwasaki 338236772Siwasaki bcopy(wakecode, (void *)WAKECODE_VADDR(sc), sizeof(wakecode)); 339236772Siwasaki 340236772Siwasaki /* Patch GDT base address, ljmp targets. */ 341236772Siwasaki WAKECODE_FIXUP((bootgdtdesc + 2), uint32_t, 342236772Siwasaki WAKECODE_PADDR(sc) + bootgdt); 343236772Siwasaki WAKECODE_FIXUP((wakeup_sw32 + 2), uint32_t, 344236772Siwasaki WAKECODE_PADDR(sc) + wakeup_32); 345236772Siwasaki#ifdef __amd64__ 346236772Siwasaki WAKECODE_FIXUP((wakeup_sw64 + 1), uint32_t, 347236772Siwasaki WAKECODE_PADDR(sc) + wakeup_64); 348236772Siwasaki WAKECODE_FIXUP(wakeup_pagetables, uint32_t, sc->acpi_wakephys); 349236772Siwasaki#endif 350236772Siwasaki 351236772Siwasaki /* Save pointers to some global data. */ 352236772Siwasaki WAKECODE_FIXUP(wakeup_ret, void *, resumectx); 353237037Sjkim#ifndef __amd64__ 354236772Siwasaki#ifdef PAE 355236772Siwasaki WAKECODE_FIXUP(wakeup_cr3, register_t, vtophys(kernel_pmap->pm_pdpt)); 356236772Siwasaki#else 357236772Siwasaki WAKECODE_FIXUP(wakeup_cr3, register_t, vtophys(kernel_pmap->pm_pdir)); 358236772Siwasaki#endif 359236772Siwasaki 360237037Sjkim#else 361236772Siwasaki /* Build temporary page tables below realmode code. */ 362236772Siwasaki pt4 = wakeaddr; 363236772Siwasaki pt3 = pt4 + (PAGE_SIZE) / sizeof(uint64_t); 364236772Siwasaki pt2 = pt3 + (PAGE_SIZE) / sizeof(uint64_t); 365236772Siwasaki 366236772Siwasaki /* Create the initial 1GB replicated page tables */ 367236772Siwasaki for (i = 0; i < 512; i++) { 368236772Siwasaki /* 369236772Siwasaki * Each slot of the level 4 pages points 370236772Siwasaki * to the same level 3 page 371236772Siwasaki */ 372236772Siwasaki pt4[i] = (uint64_t)(sc->acpi_wakephys + PAGE_SIZE); 373236772Siwasaki pt4[i] |= PG_V | PG_RW | PG_U; 374236772Siwasaki 375236772Siwasaki /* 376236772Siwasaki * Each slot of the level 3 pages points 377236772Siwasaki * to the same level 2 page 378236772Siwasaki */ 379236772Siwasaki pt3[i] = (uint64_t)(sc->acpi_wakephys + (2 * PAGE_SIZE)); 380236772Siwasaki pt3[i] |= PG_V | PG_RW | PG_U; 381236772Siwasaki 382236772Siwasaki /* The level 2 page slots are mapped with 2MB pages for 1GB. */ 383236772Siwasaki pt2[i] = i * (2 * 1024 * 1024); 384236772Siwasaki pt2[i] |= PG_V | PG_RW | PG_PS | PG_U; 385236772Siwasaki } 386236772Siwasaki#endif 387236772Siwasaki 388236772Siwasaki if (bootverbose) 389236772Siwasaki device_printf(sc->acpi_dev, "wakeup code va %#jx pa %#jx\n", 390236772Siwasaki (uintmax_t)sc->acpi_wakeaddr, (uintmax_t)sc->acpi_wakephys); 391236772Siwasaki} 392