1 /* $NetBSD: acpi_quirks.c,v 1.12 2010/04/12 18:55:27 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 1.12 2010/04/12 18:55:27 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 #define AQ_GT 0 /* > */ 51 #define AQ_LT 1 /* < */ 52 #define AQ_GTE 2 /* >= */ 53 #define AQ_LTE 3 /* <= */ 54 #define AQ_EQ 4 /* == */ 55 56 static int acpi_rev_cmp(uint32_t, uint32_t, int); 57 58 /* 59 * XXX add more 60 */ 61 static struct acpi_quirk acpi_quirks[] = { 62 { ACPI_SIG_FADT, "PTLTD ", 0x06040000, AQ_LTE, " FACP ", 63 ACPI_QUIRK_BROKEN }, 64 { ACPI_SIG_FADT, "NVIDIA", 0x06040000, AQ_EQ, "CK8 ", 65 ACPI_QUIRK_IRQ0 }, 66 { ACPI_SIG_FADT, "HP ", 0x06040012, AQ_LTE, "HWPC20F ", 67 ACPI_QUIRK_BROKEN }, 68 }; 69 70 static int 71 acpi_rev_cmp(uint32_t tabval, uint32_t wanted, int op) 72 { 73 switch (op) { 74 case AQ_GT: 75 if (tabval > wanted) 76 return 0; 77 else 78 return 1; 79 case AQ_LT: 80 if (tabval < wanted) 81 return 0; 82 else 83 return 1; 84 case AQ_LTE: 85 if (tabval <= wanted) 86 return 0; 87 else 88 return 1; 89 case AQ_GTE: 90 if (tabval >= wanted) 91 return 0; 92 else 93 return 1; 94 case AQ_EQ: 95 if (tabval == wanted) 96 return 0; 97 else 98 return 1; 99 } 100 return 1; 101 } 102 103 /* 104 * Simple function to search the quirk table. Only to be used after 105 * AcpiLoadTables has been successfully called. 106 */ 107 int 108 acpi_find_quirks(void) 109 { 110 int i, nquirks; 111 struct acpi_quirk *aqp; 112 ACPI_TABLE_HEADER fadt, dsdt, xsdt, *hdr; 113 114 nquirks = sizeof(acpi_quirks) / sizeof(struct acpi_quirk); 115 116 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_FADT, 0, &fadt))) 117 memset(&fadt, 0, sizeof(fadt)); 118 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_DSDT, 0, &dsdt))) 119 memset(&dsdt, 0, sizeof(dsdt)); 120 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_XSDT, 0, &xsdt))) 121 memset(&xsdt, 0, sizeof(xsdt)); 122 123 for (i = 0; i < nquirks; i++) { 124 aqp = &acpi_quirks[i]; 125 if (!strncmp(aqp->aq_tabletype, ACPI_SIG_DSDT, 4)) 126 hdr = &dsdt; 127 else if (!strncmp(aqp->aq_tabletype, ACPI_SIG_XSDT, 4)) 128 hdr = &xsdt; 129 else if (!strncmp(aqp->aq_tabletype, ACPI_SIG_FADT, 4)) 130 hdr = &fadt; 131 else 132 continue; 133 if (strncmp(aqp->aq_oemid, hdr->OemId, strlen(aqp->aq_oemid))) 134 continue; 135 if (acpi_rev_cmp(aqp->aq_oemrev, hdr->OemRevision, 136 aqp->aq_cmpop)) 137 continue; 138 if (strncmp(aqp->aq_tabid, hdr->OemTableId, 139 strlen(aqp->aq_tabid))) 140 continue; 141 return aqp->aq_quirks; 142 } 143 return 0; 144 } 145