acpi_machdep.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2001 Mitsuru IWASAKI
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD$");
   31 
   32 #include <sys/param.h>
   33 #include <sys/bus.h>
   34 #include <sys/kernel.h>
   35 #include <sys/module.h>
   36 #include <sys/sysctl.h>
   37 
   38 #include <vm/vm.h>
   39 #include <vm/pmap.h>
   40 
   41 #include <contrib/dev/acpica/include/acpi.h>
   42 #include <contrib/dev/acpica/include/accommon.h>
   43 #include <contrib/dev/acpica/include/actables.h>
   44 
   45 #include <dev/acpica/acpivar.h>
   46 
   47 #include <machine/nexusvar.h>
   48 
   49 int acpi_resume_beep;
   50 SYSCTL_INT(_debug_acpi, OID_AUTO, resume_beep, CTLFLAG_RWTUN,
   51     &acpi_resume_beep, 0, "Beep the PC speaker when resuming");
   52 
   53 int acpi_reset_video;
   54 TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video);
   55 
   56 static int intr_model = ACPI_INTR_PIC;
   57 
   58 int
   59 acpi_machdep_init(device_t dev)
   60 {
   61         struct acpi_softc *sc;
   62 
   63         sc = device_get_softc(dev);
   64 
   65         acpi_apm_init(sc);
   66         acpi_install_wakeup_handler(sc);
   67 
   68         if (intr_model != ACPI_INTR_PIC)
   69                 acpi_SetIntrModel(intr_model);
   70 
   71         SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx,
   72             SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO,
   73             "reset_video", CTLFLAG_RW, &acpi_reset_video, 0,
   74             "Call the VESA reset BIOS vector on the resume path");
   75 
   76         return (0);
   77 }
   78 
   79 void
   80 acpi_SetDefaultIntrModel(int model)
   81 {
   82 
   83         intr_model = model;
   84 }
   85 
   86 int
   87 acpi_machdep_quirks(int *quirks)
   88 {
   89 
   90         return (0);
   91 }
   92 
   93 /*
   94  * Map a table.  First map the header to determine the table length and then map
   95  * the entire table.
   96  */
   97 static void *
   98 map_table(vm_paddr_t pa, const char *sig)
   99 {
  100         ACPI_TABLE_HEADER *header;
  101         vm_size_t length;
  102         void *table;
  103 
  104         header = pmap_mapbios(pa, sizeof(ACPI_TABLE_HEADER));
  105         if (strncmp(header->Signature, sig, ACPI_NAMESEG_SIZE) != 0) {
  106                 pmap_unmapbios(header, sizeof(ACPI_TABLE_HEADER));
  107                 return (NULL);
  108         }
  109         length = header->Length;
  110         pmap_unmapbios(header, sizeof(ACPI_TABLE_HEADER));
  111         table = pmap_mapbios(pa, length);
  112         if (ACPI_FAILURE(AcpiUtChecksum(table, length))) {
  113                 if (bootverbose)
  114                         printf("ACPI: Failed checksum for table %s\n", sig);
  115 #if (ACPI_CHECKSUM_ABORT)
  116                 pmap_unmapbios(table, length);
  117                 return (NULL);
  118 #endif
  119         }
  120         return (table);
  121 }
  122 
  123 /*
  124  * See if a given ACPI table is the requested table.  Returns the
  125  * length of the table if it matches or zero on failure.
  126  */
  127 static int
  128 probe_table(vm_paddr_t address, const char *sig)
  129 {
  130         ACPI_TABLE_HEADER *table;
  131         int ret;
  132 
  133         table = pmap_mapbios(address, sizeof(ACPI_TABLE_HEADER));
  134         ret = strncmp(table->Signature, sig, ACPI_NAMESEG_SIZE) == 0;
  135         pmap_unmapbios(table, sizeof(ACPI_TABLE_HEADER));
  136         return (ret);
  137 }
  138 
  139 /*
  140  * Try to map a table at a given physical address previously returned
  141  * by acpi_find_table().
  142  */
  143 void *
  144 acpi_map_table(vm_paddr_t pa, const char *sig)
  145 {
  146 
  147         return (map_table(pa, sig));
  148 }
  149 
  150 /* Unmap a table previously mapped via acpi_map_table(). */
  151 void
  152 acpi_unmap_table(void *table)
  153 {
  154         ACPI_TABLE_HEADER *header;
  155 
  156         header = (ACPI_TABLE_HEADER *)table;
  157         pmap_unmapbios(table, header->Length);
  158 }
  159 
  160 /*
  161  * Return the physical address of the requested table or zero if one
  162  * is not found.
  163  */
  164 vm_paddr_t
  165 acpi_find_table(const char *sig)
  166 {
  167         ACPI_PHYSICAL_ADDRESS rsdp_ptr;
  168         ACPI_TABLE_RSDP *rsdp;
  169         ACPI_TABLE_RSDT *rsdt;
  170         ACPI_TABLE_XSDT *xsdt;
  171         ACPI_TABLE_HEADER *table;
  172         vm_paddr_t addr;
  173         int i, count;
  174 
  175         if (resource_disabled("acpi", 0))
  176                 return (0);
  177 
  178         /*
  179          * Map in the RSDP.  Since ACPI uses AcpiOsMapMemory() which in turn
  180          * calls pmap_mapbios() to find the RSDP, we assume that we can use
  181          * pmap_mapbios() to map the RSDP.
  182          */
  183         if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
  184                 return (0);
  185         rsdp = pmap_mapbios(rsdp_ptr, sizeof(ACPI_TABLE_RSDP));
  186         if (rsdp == NULL) {
  187                 printf("ACPI: Failed to map RSDP\n");
  188                 return (0);
  189         }
  190 
  191         /*
  192          * For ACPI >= 2.0, use the XSDT if it is available.
  193          * Otherwise, use the RSDT.
  194          */
  195         addr = 0;
  196         if (rsdp->Revision >= 2 && rsdp->XsdtPhysicalAddress != 0) {
  197                 /*
  198                  * AcpiOsGetRootPointer only verifies the checksum for
  199                  * the version 1.0 portion of the RSDP.  Version 2.0 has
  200                  * an additional checksum that we verify first.
  201                  */
  202                 if (AcpiUtChecksum((UINT8 *)rsdp, ACPI_RSDP_XCHECKSUM_LENGTH)) {
  203                         printf("ACPI: RSDP failed extended checksum\n");
  204                         pmap_unmapbios(rsdp, sizeof(ACPI_TABLE_RSDP));
  205                         return (0);
  206                 }
  207                 xsdt = map_table(rsdp->XsdtPhysicalAddress, ACPI_SIG_XSDT);
  208                 if (xsdt == NULL) {
  209                         printf("ACPI: Failed to map XSDT\n");
  210                         pmap_unmapbios(rsdp, sizeof(ACPI_TABLE_RSDP));
  211                         return (0);
  212                 }
  213                 count = (xsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) /
  214                     sizeof(UINT64);
  215                 for (i = 0; i < count; i++)
  216                         if (probe_table(xsdt->TableOffsetEntry[i], sig)) {
  217                                 addr = xsdt->TableOffsetEntry[i];
  218                                 break;
  219                         }
  220                 acpi_unmap_table(xsdt);
  221         } else {
  222                 rsdt = map_table(rsdp->RsdtPhysicalAddress, ACPI_SIG_RSDT);
  223                 if (rsdt == NULL) {
  224                         printf("ACPI: Failed to map RSDT\n");
  225                         pmap_unmapbios(rsdp, sizeof(ACPI_TABLE_RSDP));
  226                         return (0);
  227                 }
  228                 count = (rsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) /
  229                     sizeof(UINT32);
  230                 for (i = 0; i < count; i++)
  231                         if (probe_table(rsdt->TableOffsetEntry[i], sig)) {
  232                                 addr = rsdt->TableOffsetEntry[i];
  233                                 break;
  234                         }
  235                 acpi_unmap_table(rsdt);
  236         }
  237         pmap_unmapbios(rsdp, sizeof(ACPI_TABLE_RSDP));
  238         if (addr == 0)
  239                 return (0);
  240 
  241         /*
  242          * Verify that we can map the full table and that its checksum is
  243          * correct, etc.
  244          */
  245         table = map_table(addr, sig);
  246         if (table == NULL)
  247                 return (0);
  248         acpi_unmap_table(table);
  249 
  250         return (addr);
  251 }
  252 
  253 /*
  254  * ACPI nexus(4) driver.
  255  */
  256 static int
  257 nexus_acpi_probe(device_t dev)
  258 {
  259         int error;
  260 
  261         error = acpi_identify();
  262         if (error)
  263                 return (error);
  264         device_quiet(dev);
  265         return (BUS_PROBE_DEFAULT);
  266 }
  267 
  268 static int
  269 nexus_acpi_attach(device_t dev)
  270 {
  271 
  272         nexus_init_resources();
  273         bus_generic_probe(dev);
  274         if (BUS_ADD_CHILD(dev, 10, "acpi", 0) == NULL)
  275                 panic("failed to add acpi0 device");
  276 
  277         return (bus_generic_attach(dev));
  278 }
  279 
  280 static device_method_t nexus_acpi_methods[] = {
  281         /* Device interface */
  282         DEVMETHOD(device_probe,         nexus_acpi_probe),
  283         DEVMETHOD(device_attach,        nexus_acpi_attach),
  284         { 0, 0 }
  285 };
  286 
  287 DEFINE_CLASS_1(nexus, nexus_acpi_driver, nexus_acpi_methods, 1, nexus_driver);
  288 
  289 DRIVER_MODULE(nexus_acpi, root, nexus_acpi_driver, 0, 0);

Cache object: bc13e95868601c622cb5a4dfb6a9caa0

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/amd64/acpica/acpi_machdep.c

FreeBSD/Linux Kernel Cross Reference
sys/amd64/acpica/acpi_machdep.c