1/*-
2 * Copyright (c) 2004 Nate Lawson (SDG)
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
13 *
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
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
|
28__FBSDID("$FreeBSD: head/sys/dev/acpica/acpi_quirk.c 150003 2005-09-11 18:39:03Z obrien $");
|
| 28__FBSDID("$FreeBSD: head/sys/dev/acpica/acpi_quirk.c 167814 2007-03-22 18:16:43Z jkim $"); |
29
30#include <sys/param.h>
31#include <sys/bus.h>
32
33#include <contrib/dev/acpica/acpi.h>
34#include <dev/acpica/acpivar.h>
35
36enum ops_t {
37 OP_NONE,
38 OP_LEQ,
39 OP_GEQ,
40 OP_EQL,
41};
42
43enum val_t {
44 OEM,
45 OEM_REV,
46 CREATOR,
47 CREATOR_REV,
48};
49
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50#define ACPI_TABLE_END (ACPI_TABLE_MAX + 1)
51
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50struct acpi_q_rule {
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53 int sig; /* Table signature to match */
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| 51 char sig[ACPI_NAME_SIZE]; /* Table signature to match */ |
52 enum val_t val;
53 union {
54 char *id;
55 enum ops_t op;
56 } x;
57 union {
58 char *tid;
59 int rev;
60 } y;
61};
62
63struct acpi_q_entry {
64 const struct acpi_q_rule *match;
65 int quirks;
66};
67
68#include "acpi_quirks.h"
69
70static int aq_revcmp(int revision, enum ops_t op, int value);
71static int aq_strcmp(char *actual, char *possible);
72static int aq_match_header(ACPI_TABLE_HEADER *hdr,
73 const struct acpi_q_rule *match);
74
75static int
76aq_revcmp(int revision, enum ops_t op, int value)
77{
78 switch (op) {
79 case OP_LEQ:
80 if (revision <= value)
81 return (TRUE);
82 break;
83 case OP_GEQ:
84 if (revision >= value)
85 return (TRUE);
86 break;
87 case OP_EQL:
88 if (revision == value)
89 return (TRUE);
90 break;
91 case OP_NONE:
92 return (TRUE);
93 default:
94 panic("aq_revcmp: invalid op %d", op);
95 }
96
97 return (FALSE);
98}
99
100static int
101aq_strcmp(char *actual, char *possible)
102{
103 if (actual == NULL || possible == NULL)
104 return (TRUE);
105 return (strncmp(actual, possible, strlen(possible)) == 0);
106}
107
108static int
109aq_match_header(ACPI_TABLE_HEADER *hdr, const struct acpi_q_rule *match)
110{
111 int result;
112
113 result = FALSE;
114 switch (match->val) {
115 case OEM:
116 if (aq_strcmp(hdr->OemId, match->x.id) &&
117 aq_strcmp(hdr->OemTableId, match->y.tid))
118 result = TRUE;
119 break;
120 case CREATOR:
121 if (aq_strcmp(hdr->AslCompilerId, match->x.id))
122 result = TRUE;
123 break;
124 case OEM_REV:
125 if (aq_revcmp(hdr->OemRevision, match->x.op, match->y.rev))
126 result = TRUE;
127 break;
128 case CREATOR_REV:
129 if (aq_revcmp(hdr->AslCompilerRevision, match->x.op, match->y.rev))
130 result = TRUE;
131 break;
132 }
133
134 return (result);
135}
136
137int
138acpi_table_quirks(int *quirks)
139{
140 const struct acpi_q_entry *entry;
141 const struct acpi_q_rule *match;
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144 ACPI_TABLE_HEADER *hdr;
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| 142 ACPI_TABLE_HEADER fadt, dsdt, xsdt, *hdr; |
143 int done;
144
145 /* First, allow the machdep system to set its idea of quirks. */
146 KASSERT(quirks != NULL, ("acpi quirks ptr is NULL"));
147 acpi_machdep_quirks(quirks);
148
|
149 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_FADT, 0, &fadt)))
150 bzero(&fadt, sizeof(fadt));
151 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_DSDT, 0, &dsdt)))
152 bzero(&fadt, sizeof(dsdt));
153 if (ACPI_FAILURE(AcpiGetTableHeader(ACPI_SIG_XSDT, 0, &xsdt)))
154 bzero(&fadt, sizeof(xsdt));
155 |
156 /* Then, override the quirks with any matched from table signatures. */
157 for (entry = acpi_quirks_table; entry->match; entry++) {
158 done = TRUE;
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154 for (match = entry->match; match->sig != ACPI_TABLE_END; match++) {
155 switch (match->sig) {
156 case ACPI_TABLE_FADT:
157 hdr = (ACPI_TABLE_HEADER *)AcpiGbl_FADT;
158 break;
159 case ACPI_TABLE_DSDT:
160 hdr = (ACPI_TABLE_HEADER *)AcpiGbl_DSDT;
161 break;
162 case ACPI_TABLE_XSDT:
163 hdr = (ACPI_TABLE_HEADER *)AcpiGbl_XSDT;
164 break;
165 default:
|
159 for (match = entry->match; match->sig[0] != '\0'; match++) {
160 if (!strncmp(match->sig, "FADT", ACPI_NAME_SIZE))
161 hdr = &fadt;
162 else if (!strncmp(match->sig, ACPI_SIG_DSDT, ACPI_NAME_SIZE))
163 hdr = &dsdt;
164 else if (!strncmp(match->sig, ACPI_SIG_XSDT, ACPI_NAME_SIZE))
165 hdr = &xsdt;
166 else |
167 panic("invalid quirk header\n");
|
167 }
|
168
169 /* If we don't match any, skip to the next entry. */
|
170 if (!aq_match_header(hdr, match)) {
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| 170 if (aq_match_header(hdr, match) == FALSE) { |
171 done = FALSE;
172 break;
173 }
174 }
175
176 /* If all entries matched, update the quirks and return. */
177 if (done) {
178 *quirks = entry->quirks;
179 break;
180 }
181 }
182
183 return (0);
184}
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