sys/dev/acpi/acpi_quirks.c

   1 /*      $NetBSD: acpi_quirks.c,v 1.9 2007/12/09 20:27:53 jmcneill Exp $ */
   2
   3 /*
   4  * Copyright 2002 Wasabi Systems, Inc.
   5  * All rights reserved.
   6  *
   7  * Written by Frank van der Linden for Wasabi Systems, Inc.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed for the NetBSD Project by
  20  *      Wasabi Systems, Inc.
  21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
  22  *    or promote products derived from this software without specific prior
  23  *    written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
  29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35  * POSSIBILITY OF SUCH DAMAGE.
  36  */
  37
  38 #include <sys/cdefs.h>
  39
  40 __KERNEL_RCSID(0, "$NetBSD: acpi_quirks.c,v 1.9 2007/12/09 20:27:53 jmcneill Exp $");
  41
  42 #include "opt_acpi.h"
  43
  44 #include <sys/param.h>
  45 #include <sys/systm.h>
  46 #include <sys/device.h>
  47 #include <sys/malloc.h>
  48 #include <sys/kernel.h>
  49 #include <sys/proc.h>
  50
  51 #include <dev/acpi/acpica.h>
  52 #include <dev/acpi/acpireg.h>
  53 #include <dev/acpi/acpivar.h>
  54
  55 static int acpi_rev_cmp(uint32_t, uint32_t, int);
  56
  57 /*
  58  * XXX add more
  59  */
  60 static struct acpi_quirk acpi_quirks[] = {
  61         { ACPI_SIG_FADT, "PTLTD ", 0x06040000, AQ_LTE, "  FACP  ",
  62           ACPI_QUIRK_BROKEN },
  63         { ACPI_SIG_FADT, "NVIDIA", 0x06040000, AQ_EQ, "CK8     ",
  64           ACPI_QUIRK_IRQ0 },
  65         { ACPI_SIG_FADT, "HP    ", 0x06040012, AQ_LTE, "HWPC20F ",
  66           ACPI_QUIRK_BROKEN },
  67 };
  68
  69 static int
  70 acpi_rev_cmp(uint32_t tabval, uint32_t wanted, int op)
  71 {
  72         switch (op) {
  73         case AQ_GT:
  74                 if (tabval > wanted)
  75                         return 0;
  76                 else
  77                         return 1;
  78         case AQ_LT:
  79                 if (tabval < wanted)
  80                         return 0;
  81                 else
  82                         return 1;
  83         case AQ_LTE:
  84                 if (tabval <= wanted)
  85                         return 0;
  86                 else
  87                         return 1;
  88         case AQ_GTE:
  89                 if (tabval >= wanted)
  90                         return 0;
  91                 else
  92                         return 1;
  93         case AQ_EQ:
  94                 if (tabval == wanted)
  95                         return 0;
  96                 else
  97                         return 1;
  98         }
  99         return 1;
 100 }
 101
 102 /*
 103  * Simple function to search the quirk table. Only to be used after
 104  * AcpiLoadTables has been successfully called.
 105  */
 106 int
 107 acpi_find_quirks(void)
 108 {
 109         int i, nquirks;
 110         struct acpi_quirk *aqp;
 111         ACPI_TABLE_HEADER fadt, dsdt, xsdt, *hdr;
 112
 113         nquirks = sizeof(acpi_quirks) / sizeof(struct acpi_quirk);
 114
 115         if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_FADT, 0, &fadt)))
 116                 memset(&fadt, 0, sizeof(fadt));
 117         if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_DSDT, 0, &dsdt)))
 118                 memset(&dsdt, 0, sizeof(dsdt));
 119         if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_XSDT, 0, &xsdt)))
 120                 memset(&xsdt, 0, sizeof(xsdt));
 121
 122         for (i = 0; i < nquirks; i++) {
 123                 aqp = &acpi_quirks[i];
 124                 if (!strncmp(aqp->aq_tabletype, ACPI_SIG_DSDT, 4))
 125                         hdr = &dsdt;
 126                 else if (!strncmp(aqp->aq_tabletype, ACPI_SIG_XSDT, 4))
 127                         hdr = &xsdt;
 128                 else if (!strncmp(aqp->aq_tabletype, ACPI_SIG_FADT, 4))
 129                         hdr = &fadt;
 130                 else
 131                         continue;
 132                 if (strncmp(aqp->aq_oemid, hdr->OemId, strlen(aqp->aq_oemid)))
 133                         continue;
 134                 if (acpi_rev_cmp(aqp->aq_oemrev, hdr->OemRevision,
 135                     aqp->aq_cmpop))
 136                         continue;
 137                 if (strncmp(aqp->aq_tabid, hdr->OemTableId,
 138                     strlen(aqp->aq_tabid)))
 139                         continue;
 140                 return aqp->aq_quirks;
 141         }
 142         return 0;
 143 }