1 /* $NetBSD: acpi_quirks.c,v 1.18 2010/09/06 15:54:27 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 1.18 2010/09/06 15:54:27 jmcneill 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 63 { ACPI_SIG_FADT, "ASUS ", 0x30303031, AQ_LTE, "CUV4X-D ", 64 ACPI_QUIRK_BROKEN }, 65 66 { ACPI_SIG_FADT, "PTLTD ", 0x06040000, AQ_LTE, " FACP ", 67 ACPI_QUIRK_BROKEN }, 68 69 { ACPI_SIG_FADT, "NVIDIA", 0x06040000, AQ_EQ, "CK8 ", 70 ACPI_QUIRK_IRQ0 }, 71 72 { ACPI_SIG_FADT, "HP ", 0x06040012, AQ_LTE, "HWPC20F ", 73 ACPI_QUIRK_BROKEN }, 74 }; 75 76 static int 77 acpi_rev_cmp(uint32_t tabval, uint32_t wanted, int op) 78 { 79 switch (op) { 80 case AQ_GT: 81 if (tabval > wanted) 82 return 0; 83 else 84 return 1; 85 case AQ_LT: 86 if (tabval < wanted) 87 return 0; 88 else 89 return 1; 90 case AQ_LTE: 91 if (tabval <= wanted) 92 return 0; 93 else 94 return 1; 95 case AQ_GTE: 96 if (tabval >= wanted) 97 return 0; 98 else 99 return 1; 100 case AQ_EQ: 101 if (tabval == wanted) 102 return 0; 103 else 104 return 1; 105 } 106 return 1; 107 } 108 109 #ifdef ACPI_BLACKLIST_YEAR 110 static int 111 acpi_find_bios_year(void) 112 { 113 const char *datestr = pmf_get_platform("firmware-date"); 114 unsigned long date; 115 116 if (datestr == NULL) 117 return -1; 118 119 date = strtoul(datestr, NULL, 10); 120 if (date == 0 || date == ULONG_MAX) 121 return -1; 122 if (date < 19000000 || date > 99999999) 123 return -1; 124 return date / 10000; 125 } 126 #endif 127 128 /* 129 * Simple function to search the quirk table. Only to be used after 130 * AcpiLoadTables has been successfully called. 131 */ 132 int 133 acpi_find_quirks(void) 134 { 135 int i, nquirks; 136 struct acpi_quirk *aqp; 137 ACPI_TABLE_HEADER fadt, dsdt, xsdt, *hdr; 138 #ifdef ACPI_BLACKLIST_YEAR 139 int year = acpi_find_bios_year(); 140 141 if (year != -1 && year <= ACPI_BLACKLIST_YEAR) 142 return ACPI_QUIRK_OLDBIOS; 143 #endif 144 145 nquirks = __arraycount(acpi_quirks); 146 147 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_FADT, 0, &fadt))) 148 memset(&fadt, 0, sizeof(fadt)); 149 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_DSDT, 0, &dsdt))) 150 memset(&dsdt, 0, sizeof(dsdt)); 151 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_XSDT, 0, &xsdt))) 152 memset(&xsdt, 0, sizeof(xsdt)); 153 154 for (i = 0; i < nquirks; i++) { 155 aqp = &acpi_quirks[i]; 156 if (!strncmp(aqp->aq_tabletype, ACPI_SIG_DSDT, 4)) 157 hdr = &dsdt; 158 else if (!strncmp(aqp->aq_tabletype, ACPI_SIG_XSDT, 4)) 159 hdr = &xsdt; 160 else if (!strncmp(aqp->aq_tabletype, ACPI_SIG_FADT, 4)) 161 hdr = &fadt; 162 else 163 continue; 164 if (strncmp(aqp->aq_oemid, hdr->OemId, strlen(aqp->aq_oemid))) 165 continue; 166 if (acpi_rev_cmp(aqp->aq_oemrev, hdr->OemRevision, 167 aqp->aq_cmpop)) 168 continue; 169 if (strncmp(aqp->aq_tabid, hdr->OemTableId, 170 strlen(aqp->aq_tabid))) 171 continue; 172 return aqp->aq_quirks; 173 } 174 return 0; 175 } 176