int acpi_sleep_machdep(struct acpi_softc *sc, int state) { ACPI_STATUS status; vm_offset_t oldphys; struct pmap *pm; vm_page_t page; static vm_page_t opage = NULL; int ret = 0; int pteobj_allocated = 0; u_long ef; struct proc *p; if (sc->acpi_wakeaddr == 0) { return (0); } AcpiSetFirmwareWakingVector(sc->acpi_wakephys); ef = read_eflags(); disable_intr(); /* Create Identity Mapping */ if ((p = curproc) == NULL) p = &proc0; pm = vmspace_pmap(p->p_vmspace); if (pm->pm_pteobj == NULL) { pm->pm_pteobj = vm_object_allocate(OBJT_DEFAULT, PTDPTDI + 1); pteobj_allocated = 1; } oldphys = pmap_extract(pm, sc->acpi_wakephys); if (oldphys) { opage = PHYS_TO_VM_PAGE(oldphys); } page = PHYS_TO_VM_PAGE(sc->acpi_wakephys); pmap_enter(pm, sc->acpi_wakephys, page, VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE, 1); ret_addr = 0; if (acpi_savecpu()) { /* Execute Sleep */ p_gdt = (struct region_descriptor *)(sc->acpi_wakeaddr + physical_gdt); p_gdt->rd_limit = r_gdt.rd_limit; p_gdt->rd_base = vtophys(r_gdt.rd_base); WAKECODE_FIXUP(physical_esp, u_int32_t, vtophys(r_esp)); WAKECODE_FIXUP(previous_cr0, u_int32_t, r_cr0); WAKECODE_FIXUP(previous_cr2, u_int32_t, r_cr2); WAKECODE_FIXUP(previous_cr3, u_int32_t, r_cr3); WAKECODE_FIXUP(previous_cr4, u_int32_t, r_cr4); WAKECODE_FIXUP(previous_tr, u_int16_t, r_tr); WAKECODE_BCOPY(previous_gdt, struct region_descriptor, r_gdt); WAKECODE_FIXUP(previous_ldt, u_int16_t, r_ldt); WAKECODE_BCOPY(previous_idt, struct region_descriptor, r_idt); WAKECODE_FIXUP(where_to_recover, void, acpi_restorecpu); WAKECODE_FIXUP(previous_ds, u_int16_t, r_ds); WAKECODE_FIXUP(previous_es, u_int16_t, r_es); WAKECODE_FIXUP(previous_fs, u_int16_t, r_fs); WAKECODE_FIXUP(previous_gs, u_int16_t, r_gs); WAKECODE_FIXUP(previous_ss, u_int16_t, r_ss); if (acpi_get_verbose(sc)) { acpi_printcpu(); } wbinvd(); if (state == ACPI_STATE_S4 && sc->acpi_s4bios) { status = AcpiEnterSleepStateS4Bios(); } else { status = AcpiEnterSleepState(state); } if (status != AE_OK) { device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", AcpiFormatException(status)); ret = -1; goto out; } for (;;) ; } else { /* Execute Wakeup */ #if 0 initializecpu(); #endif icu_reinit(); if (acpi_get_verbose(sc)) { acpi_savecpu(); acpi_printcpu(); } } out: vm_page_lock_queues(); pmap_remove(pm, sc->acpi_wakephys, sc->acpi_wakephys + PAGE_SIZE); vm_page_unlock_queues(); if (opage) { pmap_enter(pm, sc->acpi_wakephys, page, VM_PROT_READ | VM_PROT_WRITE, 0); } if (pteobj_allocated) { vm_object_deallocate(pm->pm_pteobj); pm->pm_pteobj = NULL; } write_eflags(ef); return (ret); }
int acpi_sleep_machdep(struct acpi_softc *sc, int state) { ACPI_STATUS status; struct pmap *pm; int ret; uint32_t cr3; u_long ef; ret = 0; if (sc->acpi_wakeaddr == 0) return (0); AcpiSetFirmwareWakingVector(sc->acpi_wakephys); ef = read_eflags(); /* * Temporarily switch to the kernel pmap because it provides an * identity mapping (setup at boot) for the low physical memory * region containing the wakeup code. */ pm = kernel_pmap; cr3 = rcr3(); #ifdef PAE load_cr3(vtophys(pm->pm_pdpt)); #else load_cr3(vtophys(pm->pm_pdir)); #endif ret_addr = 0; ACPI_DISABLE_IRQS(); if (acpi_savecpu()) { /* Execute Sleep */ intr_suspend(); p_gdt = (struct region_descriptor *) (sc->acpi_wakeaddr + physical_gdt); p_gdt->rd_limit = saved_gdt.rd_limit; p_gdt->rd_base = vtophys(saved_gdt.rd_base); WAKECODE_FIXUP(physical_esp, uint32_t, vtophys(r_esp)); WAKECODE_FIXUP(previous_cr0, uint32_t, r_cr0); WAKECODE_FIXUP(previous_cr2, uint32_t, r_cr2); WAKECODE_FIXUP(previous_cr3, uint32_t, r_cr3); WAKECODE_FIXUP(previous_cr4, uint32_t, r_cr4); WAKECODE_FIXUP(resume_beep, uint32_t, acpi_resume_beep); WAKECODE_FIXUP(reset_video, uint32_t, acpi_reset_video); WAKECODE_FIXUP(previous_tr, uint16_t, r_tr); WAKECODE_BCOPY(previous_gdt, struct region_descriptor, saved_gdt); WAKECODE_FIXUP(previous_ldt, uint16_t, saved_ldt); WAKECODE_BCOPY(previous_idt, struct region_descriptor, saved_idt); WAKECODE_FIXUP(where_to_recover, void *, acpi_restorecpu); WAKECODE_FIXUP(previous_ds, uint16_t, r_ds); WAKECODE_FIXUP(previous_es, uint16_t, r_es); WAKECODE_FIXUP(previous_fs, uint16_t, r_fs); WAKECODE_FIXUP(previous_gs, uint16_t, r_gs); WAKECODE_FIXUP(previous_ss, uint16_t, r_ss); if (bootverbose) acpi_printcpu(); /* Call ACPICA to enter the desired sleep state */ if (state == ACPI_STATE_S4 && sc->acpi_s4bios) status = AcpiEnterSleepStateS4bios(); else status = AcpiEnterSleepState(state); if (status != AE_OK) { device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", AcpiFormatException(status)); ret = -1; goto out; } for (;;) ; } else { /* Execute Wakeup */ intr_resume(); if (bootverbose) { acpi_savecpu(); acpi_printcpu(); } } out: load_cr3(cr3); write_eflags(ef); /* If we beeped, turn it off after a delay. */ if (acpi_resume_beep) timeout(acpi_stop_beep, NULL, 3 * hz); return (ret); }