1 /* $NetBSD: acpi_quirks.c,v 1.11 2010/03/05 14:00:17 jruoho 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 1.11 2010/03/05 14:00:17 jruoho Exp $"); 41 42 #include "opt_acpi.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 48 #include <dev/acpi/acpivar.h> 49 50 static int acpi_rev_cmp(uint32_t, uint32_t, int); 51 52 /* 53 * XXX add more 54 */ 55 static struct acpi_quirk acpi_quirks[] = { 56 { ACPI_SIG_FADT, "PTLTD ", 0x06040000, AQ_LTE, " FACP ", 57 ACPI_QUIRK_BROKEN }, 58 { ACPI_SIG_FADT, "NVIDIA", 0x06040000, AQ_EQ, "CK8 ", 59 ACPI_QUIRK_IRQ0 }, 60 { ACPI_SIG_FADT, "HP ", 0x06040012, AQ_LTE, "HWPC20F ", 61 ACPI_QUIRK_BROKEN }, 62 }; 63 64 static int 65 acpi_rev_cmp(uint32_t tabval, uint32_t wanted, int op) 66 { 67 switch (op) { 68 case AQ_GT: 69 if (tabval > wanted) 70 return 0; 71 else 72 return 1; 73 case AQ_LT: 74 if (tabval < wanted) 75 return 0; 76 else 77 return 1; 78 case AQ_LTE: 79 if (tabval <= wanted) 80 return 0; 81 else 82 return 1; 83 case AQ_GTE: 84 if (tabval >= wanted) 85 return 0; 86 else 87 return 1; 88 case AQ_EQ: 89 if (tabval == wanted) 90 return 0; 91 else 92 return 1; 93 } 94 return 1; 95 } 96 97 /* 98 * Simple function to search the quirk table. Only to be used after 99 * AcpiLoadTables has been successfully called. 100 */ 101 int 102 acpi_find_quirks(void) 103 { 104 int i, nquirks; 105 struct acpi_quirk *aqp; 106 ACPI_TABLE_HEADER fadt, dsdt, xsdt, *hdr; 107 108 nquirks = sizeof(acpi_quirks) / sizeof(struct acpi_quirk); 109 110 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_FADT, 0, &fadt))) 111 memset(&fadt, 0, sizeof(fadt)); 112 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_DSDT, 0, &dsdt))) 113 memset(&dsdt, 0, sizeof(dsdt)); 114 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_XSDT, 0, &xsdt))) 115 memset(&xsdt, 0, sizeof(xsdt)); 116 117 for (i = 0; i < nquirks; i++) { 118 aqp = &acpi_quirks[i]; 119 if (!strncmp(aqp->aq_tabletype, ACPI_SIG_DSDT, 4)) 120 hdr = &dsdt; 121 else if (!strncmp(aqp->aq_tabletype, ACPI_SIG_XSDT, 4)) 122 hdr = &xsdt; 123 else if (!strncmp(aqp->aq_tabletype, ACPI_SIG_FADT, 4)) 124 hdr = &fadt; 125 else 126 continue; 127 if (strncmp(aqp->aq_oemid, hdr->OemId, strlen(aqp->aq_oemid))) 128 continue; 129 if (acpi_rev_cmp(aqp->aq_oemrev, hdr->OemRevision, 130 aqp->aq_cmpop)) 131 continue; 132 if (strncmp(aqp->aq_tabid, hdr->OemTableId, 133 strlen(aqp->aq_tabid))) 134 continue; 135 return aqp->aq_quirks; 136 } 137 return 0; 138 } 139