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 }; 66 67 static int 68 acpi_rev_cmp(uint32_t tabval, uint32_t wanted, int op) 69 { 70 switch (op) { 71 case AQ_GT: 72 if (tabval > wanted) 73 return 0; 74 else 75 return 1; 76 case AQ_LT: 77 if (tabval < wanted) 78 return 0; 79 else 80 return 1; 81 case AQ_LTE: 82 if (tabval <= wanted) 83 return 0; 84 else 85 return 1; 86 case AQ_GTE: 87 if (tabval >= wanted) 88 return 0; 89 else 90 return 1; 91 case AQ_EQ: 92 if (tabval == wanted) 93 return 0; 94 else 95 return 1; 96 } 97 return 1; 98 } 99 100 /* 101 * Simple function to search the quirk table. Only to be used after 102 * AcpiLoadTables has been successfully called. 103 */ 104 int 105 acpi_find_quirks(void) 106 { 107 int i, nquirks; 108 struct acpi_quirk *aqp; 109 ACPI_TABLE_HEADER fadt, dsdt, xsdt, *hdr; 110 111 nquirks = sizeof(acpi_quirks) / sizeof(struct acpi_quirk); 112 113 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_FADT, 0, &fadt))) 114 memset(&fadt, 0, sizeof(fadt)); 115 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_DSDT, 0, &dsdt))) 116 memset(&dsdt, 0, sizeof(dsdt)); 117 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_XSDT, 0, &xsdt))) 118 memset(&xsdt, 0, sizeof(xsdt)); 119 120 for (i = 0; i < nquirks; i++) { 121 aqp = &acpi_quirks[i]; 122 if (!strncmp(aqp->aq_tabletype, ACPI_SIG_DSDT, 4)) 123 hdr = &dsdt; 124 else if (!strncmp(aqp->aq_tabletype, ACPI_SIG_XSDT, 4)) 125 hdr = &xsdt; 126 else if (!strncmp(aqp->aq_tabletype, ACPI_SIG_FADT, 4)) 127 hdr = &fadt; 128 else 129 continue; 130 if (strncmp(aqp->aq_oemid, hdr->OemId, strlen(aqp->aq_oemid))) 131 continue; 132 if (acpi_rev_cmp(aqp->aq_oemrev, hdr->OemRevision, 133 aqp->aq_cmpop)) 134 continue; 135 if (strncmp(aqp->aq_tabid, hdr->OemTableId, 136 strlen(aqp->aq_tabid))) 137 continue; 138 return aqp->aq_quirks; 139 } 140 return 0; 141 } 142