2 * Copyright (c) 2004 Nate Lawson (SDG)
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
33 #include <contrib/dev/acpica/include/acpi.h>
35 #include <dev/acpica/acpivar.h>
52 char sig[ACPI_NAME_SIZE]; /* Table signature to match */
65 const struct acpi_q_rule *match;
69 #include "acpi_quirks.h"
71 static int aq_revcmp(int revision, enum ops_t op, int value);
72 static int aq_strcmp(char *actual, char *possible);
73 static int aq_match_header(ACPI_TABLE_HEADER *hdr,
74 const struct acpi_q_rule *match);
77 aq_revcmp(int revision, enum ops_t op, int value)
81 if (revision <= value)
85 if (revision >= value)
89 if (revision == value)
95 panic("aq_revcmp: invalid op %d", op);
102 aq_strcmp(char *actual, char *possible)
104 if (actual == NULL || possible == NULL)
106 return (strncmp(actual, possible, strlen(possible)) == 0);
110 aq_match_header(ACPI_TABLE_HEADER *hdr, const struct acpi_q_rule *match)
115 switch (match->val) {
117 if (aq_strcmp(hdr->OemId, match->x.id) &&
118 aq_strcmp(hdr->OemTableId, match->y.tid))
122 if (aq_strcmp(hdr->AslCompilerId, match->x.id))
126 if (aq_revcmp(hdr->OemRevision, match->x.op, match->y.rev))
130 if (aq_revcmp(hdr->AslCompilerRevision, match->x.op, match->y.rev))
139 acpi_table_quirks(int *quirks)
141 const struct acpi_q_entry *entry;
142 const struct acpi_q_rule *match;
143 ACPI_TABLE_HEADER fadt, dsdt, xsdt, *hdr;
146 /* First, allow the machdep system to set its idea of quirks. */
147 KASSERT(quirks != NULL, ("acpi quirks ptr is NULL"));
148 acpi_machdep_quirks(quirks);
150 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_FADT, 0, &fadt)))
151 bzero(&fadt, sizeof(fadt));
152 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_DSDT, 0, &dsdt)))
153 bzero(&dsdt, sizeof(dsdt));
154 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_XSDT, 0, &xsdt)))
155 bzero(&xsdt, sizeof(xsdt));
157 /* Then, override the quirks with any matched from table signatures. */
158 for (entry = acpi_quirks_table; entry->match; entry++) {
160 for (match = entry->match; match->sig[0] != '\0'; match++) {
161 if (!strncmp(match->sig, "FADT", ACPI_NAME_SIZE))
163 else if (!strncmp(match->sig, ACPI_SIG_DSDT, ACPI_NAME_SIZE))
165 else if (!strncmp(match->sig, ACPI_SIG_XSDT, ACPI_NAME_SIZE))
168 panic("invalid quirk header\n");
170 /* If we don't match any, skip to the next entry. */
171 if (aq_match_header(hdr, match) == FALSE) {
177 /* If all entries matched, update the quirks and return. */
179 *quirks = entry->quirks;