1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/*-
* Copyright (c) 2004 Nate Lawson (SDG)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/bus.h>
#include "acpi.h"
#include <dev/acpica/acpivar.h>
enum ops_t {
OP_NONE,
OP_LEQ,
OP_GEQ,
OP_EQL,
};
enum val_t {
OEM,
OEM_REV,
CREATOR,
CREATOR_REV,
};
#define ACPI_TABLE_END (ACPI_TABLE_MAX + 1)
struct acpi_q_rule {
int sig; /* Table signature to match */
enum val_t val;
union {
char *id;
enum ops_t op;
} x;
union {
char *tid;
int rev;
} y;
};
struct acpi_q_entry {
const struct acpi_q_rule *match;
int quirks;
};
#include "acpi_quirks.h"
static int aq_revcmp(int revision, enum ops_t op, int value);
static int aq_strcmp(char *actual, char *possible);
static int aq_match_header(ACPI_TABLE_HEADER *hdr,
const struct acpi_q_rule *match);
static int
aq_revcmp(int revision, enum ops_t op, int value)
{
switch (op) {
case OP_LEQ:
if (revision <= value)
return (TRUE);
break;
case OP_GEQ:
if (revision >= value)
return (TRUE);
break;
case OP_EQL:
if (revision == value)
return (TRUE);
break;
case OP_NONE:
return (TRUE);
default:
panic("aq_revcmp: invalid op %d", op);
}
return (FALSE);
}
static int
aq_strcmp(char *actual, char *possible)
{
if (actual == NULL || possible == NULL)
return (TRUE);
return (strncmp(actual, possible, strlen(possible)) == 0);
}
static int
aq_match_header(ACPI_TABLE_HEADER *hdr, const struct acpi_q_rule *match)
{
int result;
result = FALSE;
switch (match->val) {
case OEM:
if (aq_strcmp(hdr->OemId, match->x.id) &&
aq_strcmp(hdr->OemTableId, match->y.tid))
result = TRUE;
break;
case CREATOR:
if (aq_strcmp(hdr->AslCompilerId, match->x.id))
result = TRUE;
break;
case OEM_REV:
if (aq_revcmp(hdr->OemRevision, match->x.op, match->y.rev))
result = TRUE;
break;
case CREATOR_REV:
if (aq_revcmp(hdr->AslCompilerRevision, match->x.op, match->y.rev))
result = TRUE;
break;
}
return (result);
}
int
acpi_table_quirks(int *quirks)
{
const struct acpi_q_entry *entry;
const struct acpi_q_rule *match;
ACPI_TABLE_HEADER *hdr;
int done;
/* First, allow the machdep system to set its idea of quirks. */
KASSERT(quirks != NULL, ("acpi quirks ptr is NULL"));
acpi_machdep_quirks(quirks);
/* Then, override the quirks with any matched from table signatures. */
for (entry = acpi_quirks_table; entry->match; entry++) {
done = TRUE;
for (match = entry->match; match->sig != ACPI_TABLE_END; match++) {
switch (match->sig) {
case ACPI_TABLE_FADT:
hdr = (ACPI_TABLE_HEADER *)AcpiGbl_FADT;
break;
case ACPI_TABLE_DSDT:
hdr = (ACPI_TABLE_HEADER *)AcpiGbl_DSDT;
break;
case ACPI_TABLE_XSDT:
hdr = (ACPI_TABLE_HEADER *)AcpiGbl_XSDT;
break;
default:
panic("invalid quirk header\n");
}
/* If we don't match any, skip to the next entry. */
if (!aq_match_header(hdr, match)) {
done = FALSE;
break;
}
}
/* If all entries matched, update the quirks and return. */
if (done) {
*quirks = entry->quirks;
break;
}
}
return (0);
}
|