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
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2021 Beckhoff Automation GmbH & Co. KG
* Author: Corvin Köhne <c.koehne@beckhoff.com>
*/
#include <sys/param.h>
#include <sys/queue.h>
#include <machine/vmm.h>
#include <assert.h>
#include <err.h>
#include <errno.h>
#include <vmmapi.h>
#include "acpi.h"
#include "acpi_device.h"
#include "basl.h"
/**
* List entry to enumerate all resources used by an ACPI device.
*
* @param chain Used to chain multiple elements together.
* @param type Type of the ACPI resource.
* @param data Data of the ACPI resource.
*/
struct acpi_resource_list_entry {
SLIST_ENTRY(acpi_resource_list_entry) chain;
UINT32 type;
ACPI_RESOURCE_DATA data;
};
/**
* Holds information about an ACPI device.
*
* @param vm_ctx VM context the ACPI device was created in.
* @param softc A pointer to the software context of the ACPI device.
* @param emul Device emulation struct. It contains some information like the
name of the ACPI device and some device specific functions.
* @param crs Current resources used by the ACPI device.
*/
struct acpi_device {
struct vmctx *vm_ctx;
void *softc;
const struct acpi_device_emul *emul;
SLIST_HEAD(acpi_resource_list, acpi_resource_list_entry) crs;
};
int
acpi_device_create(struct acpi_device **const new_dev, void *const softc,
struct vmctx *const vm_ctx, const struct acpi_device_emul *const emul)
{
assert(new_dev != NULL);
assert(vm_ctx != NULL);
assert(emul != NULL);
struct acpi_device *const dev = calloc(1, sizeof(*dev));
if (dev == NULL) {
return (ENOMEM);
}
dev->vm_ctx = vm_ctx;
dev->softc = softc;
dev->emul = emul;
SLIST_INIT(&dev->crs);
const int error = acpi_tables_add_device(dev);
if (error) {
acpi_device_destroy(dev);
return (error);
}
*new_dev = dev;
return (0);
}
void
acpi_device_destroy(struct acpi_device *const dev)
{
if (dev == NULL) {
return;
}
struct acpi_resource_list_entry *res;
while (!SLIST_EMPTY(&dev->crs)) {
res = SLIST_FIRST(&dev->crs);
SLIST_REMOVE_HEAD(&dev->crs, chain);
free(res);
}
free(dev);
}
int
acpi_device_add_res_fixed_ioport(struct acpi_device *const dev,
const UINT16 port, const UINT8 length)
{
if (dev == NULL) {
return (EINVAL);
}
struct acpi_resource_list_entry *const res = calloc(1, sizeof(*res));
if (res == NULL) {
return (ENOMEM);
}
res->type = ACPI_RESOURCE_TYPE_FIXED_IO;
res->data.FixedIo.Address = port;
res->data.FixedIo.AddressLength = length;
SLIST_INSERT_HEAD(&dev->crs, res, chain);
return (0);
}
int
acpi_device_add_res_fixed_memory32(struct acpi_device *const dev,
const UINT8 write_protected, const UINT32 address, const UINT32 length)
{
if (dev == NULL) {
return (EINVAL);
}
struct acpi_resource_list_entry *const res = calloc(1, sizeof(*res));
if (res == NULL) {
return (ENOMEM);
}
res->type = ACPI_RESOURCE_TYPE_FIXED_MEMORY32;
res->data.FixedMemory32.WriteProtect = write_protected;
res->data.FixedMemory32.Address = address;
res->data.FixedMemory32.AddressLength = length;
SLIST_INSERT_HEAD(&dev->crs, res, chain);
return (0);
}
void *
acpi_device_get_softc(const struct acpi_device *const dev)
{
assert(dev != NULL);
return (dev->softc);
}
int
acpi_device_build_table(const struct acpi_device *const dev)
{
assert(dev != NULL);
assert(dev->emul != NULL);
if (dev->emul->build_table != NULL) {
return (dev->emul->build_table(dev));
}
return (0);
}
static int
acpi_device_write_dsdt_crs(const struct acpi_device *const dev)
{
const struct acpi_resource_list_entry *res;
SLIST_FOREACH(res, &dev->crs, chain) {
switch (res->type) {
case ACPI_RESOURCE_TYPE_FIXED_IO:
dsdt_fixed_ioport(res->data.FixedIo.Address,
res->data.FixedIo.AddressLength);
break;
case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
dsdt_fixed_mem32(res->data.FixedMemory32.Address,
res->data.FixedMemory32.AddressLength);
break;
default:
assert(0);
break;
}
}
return (0);
}
int
acpi_device_write_dsdt(const struct acpi_device *const dev)
{
assert(dev != NULL);
dsdt_line("");
dsdt_line(" Scope (\\_SB)");
dsdt_line(" {");
dsdt_line(" Device (%s)", dev->emul->name);
dsdt_line(" {");
dsdt_line(" Name (_HID, \"%s\")", dev->emul->hid);
dsdt_line(" Name (_STA, 0x0F)");
dsdt_line(" Name (_CRS, ResourceTemplate ()");
dsdt_line(" {");
dsdt_indent(4);
BASL_EXEC(acpi_device_write_dsdt_crs(dev));
dsdt_unindent(4);
dsdt_line(" })");
if (dev->emul->write_dsdt != NULL) {
dsdt_indent(3);
BASL_EXEC(dev->emul->write_dsdt(dev));
dsdt_unindent(3);
}
dsdt_line(" }");
dsdt_line(" }");
return (0);
}
|
