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acpi_machdep.c
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acpi_wakecode.S
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Editing: acpi_machdep.c
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2001 Mitsuru IWASAKI * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/bus.h> #include <sys/kernel.h> #include <sys/module.h> #include <sys/sysctl.h> #include <vm/vm.h> #include <vm/pmap.h> #include <contrib/dev/acpica/include/acpi.h> #include <contrib/dev/acpica/include/accommon.h> #include <contrib/dev/acpica/include/actables.h> #include <dev/acpica/acpivar.h> #include <machine/nexusvar.h> uint32_t acpi_resume_beep; SYSCTL_UINT(_debug_acpi, OID_AUTO, resume_beep, CTLFLAG_RWTUN, &acpi_resume_beep, 0, "Beep the PC speaker when resuming"); uint32_t acpi_reset_video; TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video); static int intr_model = ACPI_INTR_PIC; int acpi_machdep_init(device_t dev) { struct acpi_softc *sc; sc = device_get_softc(dev); acpi_apm_init(sc); acpi_install_wakeup_handler(sc); if (intr_model == ACPI_INTR_PIC) BUS_CONFIG_INTR(dev, AcpiGbl_FADT.SciInterrupt, INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW); else acpi_SetIntrModel(intr_model); SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, "reset_video", CTLFLAG_RW, &acpi_reset_video, 0, "Call the VESA reset BIOS vector on the resume path"); return (0); } void acpi_SetDefaultIntrModel(int model) { intr_model = model; } /* Check BIOS date. If 1998 or older, disable ACPI. */ int acpi_machdep_quirks(int *quirks) { char *va; int year; /* BIOS address 0xffff5 contains the date in the format mm/dd/yy. */ va = pmap_mapbios(0xffff0, 16); sscanf(va + 11, "%2d", &year); pmap_unmapbios((vm_offset_t)va, 16); /* * Date must be >= 1/1/1999 or we don't trust ACPI. Note that this * check must be changed by my 114th birthday. */ if (year > 90 && year < 99) *quirks = ACPI_Q_BROKEN; return (0); } /* * Map a table. First map the header to determine the table length and then map * the entire table. */ static void * map_table(vm_paddr_t pa, const char *sig) { ACPI_TABLE_HEADER *header; vm_offset_t length; void *table; header = pmap_mapbios(pa, sizeof(ACPI_TABLE_HEADER)); if (strncmp(header->Signature, sig, ACPI_NAMESEG_SIZE) != 0) { pmap_unmapbios((vm_offset_t)header, sizeof(ACPI_TABLE_HEADER)); return (NULL); } length = header->Length; pmap_unmapbios((vm_offset_t)header, sizeof(ACPI_TABLE_HEADER)); table = pmap_mapbios(pa, length); if (ACPI_FAILURE(AcpiTbChecksum(table, length))) { if (bootverbose) printf("ACPI: Failed checksum for table %s\n", sig); #if (ACPI_CHECKSUM_ABORT) pmap_unmapbios((vm_offset_t)table, length); return (NULL); #endif } return (table); } /* * See if a given ACPI table is the requested table. Returns the * length of the able if it matches or zero on failure. */ static int probe_table(vm_paddr_t address, const char *sig) { ACPI_TABLE_HEADER *table; int ret; table = pmap_mapbios(address, sizeof(ACPI_TABLE_HEADER)); ret = strncmp(table->Signature, sig, ACPI_NAMESEG_SIZE) == 0; pmap_unmapbios((vm_offset_t)table, sizeof(ACPI_TABLE_HEADER)); return (ret); } /* * Try to map a table at a given physical address previously returned * by acpi_find_table(). */ void * acpi_map_table(vm_paddr_t pa, const char *sig) { return (map_table(pa, sig)); } /* Unmap a table previously mapped via acpi_map_table(). */ void acpi_unmap_table(void *table) { ACPI_TABLE_HEADER *header; header = (ACPI_TABLE_HEADER *)table; pmap_unmapbios((vm_offset_t)table, header->Length); } /* * Return the physical address of the requested table or zero if one * is not found. */ vm_paddr_t acpi_find_table(const char *sig) { ACPI_PHYSICAL_ADDRESS rsdp_ptr; ACPI_TABLE_RSDP *rsdp; ACPI_TABLE_RSDT *rsdt; ACPI_TABLE_XSDT *xsdt; ACPI_TABLE_HEADER *table; vm_paddr_t addr; int i, count; if (resource_disabled("acpi", 0)) return (0); /* * Map in the RSDP. Since ACPI uses AcpiOsMapMemory() which in turn * calls pmap_mapbios() to find the RSDP, we assume that we can use * pmap_mapbios() to map the RSDP. */ if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0) return (0); rsdp = pmap_mapbios(rsdp_ptr, sizeof(ACPI_TABLE_RSDP)); if (rsdp == NULL) { if (bootverbose) printf("ACPI: Failed to map RSDP\n"); return (0); } /* * For ACPI >= 2.0, use the XSDT if it is available. * Otherwise, use the RSDT. */ addr = 0; if (rsdp->Revision >= 2 && rsdp->XsdtPhysicalAddress != 0) { /* * AcpiOsGetRootPointer only verifies the checksum for * the version 1.0 portion of the RSDP. Version 2.0 has * an additional checksum that we verify first. */ if (AcpiTbChecksum((UINT8 *)rsdp, ACPI_RSDP_XCHECKSUM_LENGTH)) { if (bootverbose) printf("ACPI: RSDP failed extended checksum\n"); return (0); } xsdt = map_table(rsdp->XsdtPhysicalAddress, ACPI_SIG_XSDT); if (xsdt == NULL) { if (bootverbose) printf("ACPI: Failed to map XSDT\n"); return (0); } count = (xsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) / sizeof(UINT64); for (i = 0; i < count; i++) if (probe_table(xsdt->TableOffsetEntry[i], sig)) { addr = xsdt->TableOffsetEntry[i]; break; } acpi_unmap_table(xsdt); } else { rsdt = map_table(rsdp->RsdtPhysicalAddress, ACPI_SIG_RSDT); if (rsdt == NULL) { if (bootverbose) printf("ACPI: Failed to map RSDT\n"); return (0); } count = (rsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) / sizeof(UINT32); for (i = 0; i < count; i++) if (probe_table(rsdt->TableOffsetEntry[i], sig)) { addr = rsdt->TableOffsetEntry[i]; break; } acpi_unmap_table(rsdt); } pmap_unmapbios((vm_offset_t)rsdp, sizeof(ACPI_TABLE_RSDP)); if (addr == 0) return (0); /* * Verify that we can map the full table and that its checksum is * correct, etc. */ table = map_table(addr, sig); if (table == NULL) return (0); acpi_unmap_table(table); return (addr); } /* * ACPI nexus(4) driver. */ static int nexus_acpi_probe(device_t dev) { int error; error = acpi_identify(); if (error) return (error); return (BUS_PROBE_DEFAULT); } static int nexus_acpi_attach(device_t dev) { nexus_init_resources(); bus_generic_probe(dev); if (BUS_ADD_CHILD(dev, 10, "acpi", 0) == NULL) panic("failed to add acpi0 device"); return (bus_generic_attach(dev)); } static device_method_t nexus_acpi_methods[] = { /* Device interface */ DEVMETHOD(device_probe, nexus_acpi_probe), DEVMETHOD(device_attach, nexus_acpi_attach), { 0, 0 } }; DEFINE_CLASS_1(nexus, nexus_acpi_driver, nexus_acpi_methods, 1, nexus_driver); static devclass_t nexus_devclass; DRIVER_MODULE(nexus_acpi, root, nexus_acpi_driver, nexus_devclass, 0, 0);
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