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acpi_quirks.c revision 1.1 
      1 /*	$NetBSD: acpi_quirks.c,v 1.1 2003/05/15 21:29:50 fvdl 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 1.1 2003/05/15 21:29:50 fvdl 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 #include <dev/acpi/acpi_osd.h>
     55 
     56 static struct acpi_quirk acpi_quirks[] = {
     57 	/*
     58 	 * This implementation seems to be in widespread use, but
     59 	 * unfortunately, on some systems, it constructs a PCI hierarchy
     60 	 * that doesn't match reality at all (like on SuperMicro boards).
     61 	 */
     62 	{ "PTLTD ", 0x06040000, ACPI_QUIRK_BADPCI | ACPI_QUIRK_BADIRQ },
     63 };
     64 
     65 /*
     66  * Simple function to search the quirk table. Only to be used after
     67  * AcpiLoadTables has been successfully called.
     68  */
     69 int
     70 acpi_find_quirks(void)
     71 {
     72 	int i, nquirks;
     73 	struct acpi_quirk *aqp;
     74 	ACPI_TABLE_HEADER *ap;
     75 
     76 	ap = &AcpiGbl_XSDT->Header;
     77 	nquirks = sizeof(acpi_quirks) / sizeof(struct acpi_quirk);
     78 
     79 	for (i = 0; i < nquirks; i++) {
     80 		aqp = &acpi_quirks[i];
     81 		if (!strncmp(aqp->aq_oemid, ap->OemId, strlen(aqp->aq_oemid)) &&
     82 		    aqp->aq_oemrev == ap->OemRevision)
     83 			return aqp->aq_quirks;
     84 	}
     85 	return 0;
     86 }
     87