396 lines
10 KiB
C
396 lines
10 KiB
C
/*-
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* Copyright (c) 2001 Mitsuru IWASAKI
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/sysctl.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <contrib/dev/acpica/include/acpi.h>
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#include <contrib/dev/acpica/include/accommon.h>
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#include <contrib/dev/acpica/include/actables.h>
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#include <dev/acpica/acpivar.h>
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#include <machine/nexusvar.h>
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uint32_t acpi_resume_beep;
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TUNABLE_INT("debug.acpi.resume_beep", &acpi_resume_beep);
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SYSCTL_UINT(_debug_acpi, OID_AUTO, resume_beep, CTLFLAG_RW, &acpi_resume_beep,
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0, "Beep the PC speaker when resuming");
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uint32_t acpi_reset_video;
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TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video);
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static int intr_model = ACPI_INTR_PIC;
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int
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acpi_machdep_init(device_t dev)
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{
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struct acpi_softc *sc;
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sc = device_get_softc(dev);
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acpi_apm_init(sc);
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acpi_install_wakeup_handler(sc);
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if (intr_model == ACPI_INTR_PIC)
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BUS_CONFIG_INTR(dev, AcpiGbl_FADT.SciInterrupt,
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INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
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else
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acpi_SetIntrModel(intr_model);
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SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx,
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SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO,
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"reset_video", CTLFLAG_RW, &acpi_reset_video, 0,
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"Call the VESA reset BIOS vector on the resume path");
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return (0);
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}
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void
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acpi_SetDefaultIntrModel(int model)
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{
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intr_model = model;
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}
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/* Check BIOS date. If 1998 or older, disable ACPI. */
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int
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acpi_machdep_quirks(int *quirks)
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{
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char *va;
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int year;
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/* BIOS address 0xffff5 contains the date in the format mm/dd/yy. */
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va = pmap_mapbios(0xffff0, 16);
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sscanf(va + 11, "%2d", &year);
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pmap_unmapbios((vm_offset_t)va, 16);
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/*
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* Date must be >= 1/1/1999 or we don't trust ACPI. Note that this
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* check must be changed by my 114th birthday.
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*/
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if (year > 90 && year < 99)
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*quirks = ACPI_Q_BROKEN;
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return (0);
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}
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void
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acpi_cpu_c1()
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{
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__asm __volatile("sti; hlt");
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}
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/*
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* Support for mapping ACPI tables during early boot. This abuses the
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* crashdump map because the kernel cannot allocate KVA in
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* pmap_mapbios() when this is used. This makes the following
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* assumptions about how we use this KVA: pages 0 and 1 are used to
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* map in the header of each table found via the RSDT or XSDT and
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* pages 2 to n are used to map in the RSDT or XSDT. This has to use
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* 2 pages for the table headers in case a header spans a page
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* boundary.
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*
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* XXX: We don't ensure the table fits in the available address space
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* in the crashdump map.
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*/
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/*
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* Map some memory using the crashdump map. 'offset' is an offset in
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* pages into the crashdump map to use for the start of the mapping.
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*/
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static void *
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table_map(vm_paddr_t pa, int offset, vm_offset_t length)
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{
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vm_offset_t va, off;
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void *data;
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off = pa & PAGE_MASK;
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length = roundup(length + off, PAGE_SIZE);
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pa = pa & PG_FRAME;
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va = (vm_offset_t)pmap_kenter_temporary(pa, offset) +
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(offset * PAGE_SIZE);
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data = (void *)(va + off);
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length -= PAGE_SIZE;
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while (length > 0) {
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va += PAGE_SIZE;
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pa += PAGE_SIZE;
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length -= PAGE_SIZE;
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pmap_kenter(va, pa);
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invlpg(va);
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}
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return (data);
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}
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/* Unmap memory previously mapped with table_map(). */
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static void
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table_unmap(void *data, vm_offset_t length)
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{
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vm_offset_t va, off;
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va = (vm_offset_t)data;
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off = va & PAGE_MASK;
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length = roundup(length + off, PAGE_SIZE);
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va &= ~PAGE_MASK;
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while (length > 0) {
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pmap_kremove(va);
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invlpg(va);
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va += PAGE_SIZE;
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length -= PAGE_SIZE;
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}
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}
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/*
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* Map a table at a given offset into the crashdump map. It first
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* maps the header to determine the table length and then maps the
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* entire table.
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*/
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static void *
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map_table(vm_paddr_t pa, int offset, const char *sig)
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{
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ACPI_TABLE_HEADER *header;
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vm_offset_t length;
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void *table;
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header = table_map(pa, offset, sizeof(ACPI_TABLE_HEADER));
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if (strncmp(header->Signature, sig, ACPI_NAME_SIZE) != 0) {
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table_unmap(header, sizeof(ACPI_TABLE_HEADER));
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return (NULL);
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}
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length = header->Length;
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table_unmap(header, sizeof(ACPI_TABLE_HEADER));
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table = table_map(pa, offset, length);
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if (ACPI_FAILURE(AcpiTbChecksum(table, length))) {
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if (bootverbose)
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printf("ACPI: Failed checksum for table %s\n", sig);
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#if (ACPI_CHECKSUM_ABORT)
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table_unmap(table, length);
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return (NULL);
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#endif
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}
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return (table);
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}
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/*
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* See if a given ACPI table is the requested table. Returns the
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* length of the able if it matches or zero on failure.
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*/
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static int
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probe_table(vm_paddr_t address, const char *sig)
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{
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ACPI_TABLE_HEADER *table;
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table = table_map(address, 0, sizeof(ACPI_TABLE_HEADER));
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if (table == NULL) {
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if (bootverbose)
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printf("ACPI: Failed to map table at 0x%jx\n",
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(uintmax_t)address);
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return (0);
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}
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if (bootverbose)
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printf("Table '%.4s' at 0x%jx\n", table->Signature,
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(uintmax_t)address);
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if (strncmp(table->Signature, sig, ACPI_NAME_SIZE) != 0) {
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table_unmap(table, sizeof(ACPI_TABLE_HEADER));
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return (0);
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}
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table_unmap(table, sizeof(ACPI_TABLE_HEADER));
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return (1);
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}
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/*
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* Try to map a table at a given physical address previously returned
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* by acpi_find_table().
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*/
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void *
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acpi_map_table(vm_paddr_t pa, const char *sig)
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{
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return (map_table(pa, 0, sig));
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}
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/* Unmap a table previously mapped via acpi_map_table(). */
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void
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acpi_unmap_table(void *table)
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{
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ACPI_TABLE_HEADER *header;
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header = (ACPI_TABLE_HEADER *)table;
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table_unmap(table, header->Length);
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}
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/*
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* Return the physical address of the requested table or zero if one
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* is not found.
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*/
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vm_paddr_t
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acpi_find_table(const char *sig)
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{
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ACPI_PHYSICAL_ADDRESS rsdp_ptr;
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ACPI_TABLE_RSDP *rsdp;
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ACPI_TABLE_RSDT *rsdt;
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ACPI_TABLE_XSDT *xsdt;
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ACPI_TABLE_HEADER *table;
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vm_paddr_t addr;
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int i, count;
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if (resource_disabled("acpi", 0))
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return (0);
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/*
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* Map in the RSDP. Since ACPI uses AcpiOsMapMemory() which in turn
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* calls pmap_mapbios() to find the RSDP, we assume that we can use
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* pmap_mapbios() to map the RSDP.
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*/
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if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
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return (0);
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rsdp = pmap_mapbios(rsdp_ptr, sizeof(ACPI_TABLE_RSDP));
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if (rsdp == NULL) {
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if (bootverbose)
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printf("ACPI: Failed to map RSDP\n");
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return (0);
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}
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/*
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* For ACPI >= 2.0, use the XSDT if it is available.
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* Otherwise, use the RSDT. We map the XSDT or RSDT at page 2
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* in the crashdump area. Pages 0 and 1 are used to map in the
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* headers of candidate ACPI tables.
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*/
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addr = 0;
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if (rsdp->Revision >= 2 && rsdp->XsdtPhysicalAddress != 0) {
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/*
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* AcpiOsGetRootPointer only verifies the checksum for
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* the version 1.0 portion of the RSDP. Version 2.0 has
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* an additional checksum that we verify first.
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*/
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if (AcpiTbChecksum((UINT8 *)rsdp, ACPI_RSDP_XCHECKSUM_LENGTH)) {
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if (bootverbose)
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printf("ACPI: RSDP failed extended checksum\n");
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return (0);
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}
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xsdt = map_table(rsdp->XsdtPhysicalAddress, 2, ACPI_SIG_XSDT);
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if (xsdt == NULL) {
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if (bootverbose)
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printf("ACPI: Failed to map XSDT\n");
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return (0);
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}
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count = (xsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) /
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sizeof(UINT64);
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for (i = 0; i < count; i++)
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if (probe_table(xsdt->TableOffsetEntry[i], sig)) {
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addr = xsdt->TableOffsetEntry[i];
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break;
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}
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acpi_unmap_table(xsdt);
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} else {
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rsdt = map_table(rsdp->RsdtPhysicalAddress, 2, ACPI_SIG_RSDT);
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if (rsdt == NULL) {
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if (bootverbose)
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printf("ACPI: Failed to map RSDT\n");
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return (0);
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}
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count = (rsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) /
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sizeof(UINT32);
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for (i = 0; i < count; i++)
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if (probe_table(rsdt->TableOffsetEntry[i], sig)) {
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addr = rsdt->TableOffsetEntry[i];
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break;
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}
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acpi_unmap_table(rsdt);
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}
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pmap_unmapbios((vm_offset_t)rsdp, sizeof(ACPI_TABLE_RSDP));
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if (addr == 0) {
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if (bootverbose)
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printf("ACPI: No %s table found\n", sig);
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return (0);
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}
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if (bootverbose)
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printf("%s: Found table at 0x%jx\n", sig, (uintmax_t)addr);
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/*
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* Verify that we can map the full table and that its checksum is
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* correct, etc.
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*/
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table = map_table(addr, 0, sig);
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if (table == NULL)
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return (0);
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acpi_unmap_table(table);
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return (addr);
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}
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/*
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* ACPI nexus(4) driver.
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*/
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static int
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nexus_acpi_probe(device_t dev)
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{
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int error;
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error = acpi_identify();
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if (error)
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return (error);
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return (BUS_PROBE_DEFAULT);
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}
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static int
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nexus_acpi_attach(device_t dev)
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{
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nexus_init_resources();
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bus_generic_probe(dev);
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if (BUS_ADD_CHILD(dev, 10, "acpi", 0) == NULL)
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panic("failed to add acpi0 device");
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return (bus_generic_attach(dev));
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}
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static device_method_t nexus_acpi_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, nexus_acpi_probe),
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DEVMETHOD(device_attach, nexus_acpi_attach),
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{ 0, 0 }
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};
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DEFINE_CLASS_1(nexus, nexus_acpi_driver, nexus_acpi_methods, 1, nexus_driver);
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static devclass_t nexus_devclass;
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DRIVER_MODULE(nexus_acpi, root, nexus_acpi_driver, nexus_devclass, 0, 0);
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