milkymist-minimac2: Flush queued packets when link comes up
[qemu/ar7.git] / hw / misc / applesmc.c
blob6bd61e78281afe42131103dbed79427a8e1a916a
1 /*
2 * Apple SMC controller
4 * Copyright (c) 2007 Alexander Graf
6 * Authors: Alexander Graf <agraf@suse.de>
7 * Susanne Graf <suse@csgraf.de>
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
22 * *****************************************************************
24 * In all Intel-based Apple hardware there is an SMC chip to control the
25 * backlight, fans and several other generic device parameters. It also
26 * contains the magic keys used to dongle Mac OS X to the device.
28 * This driver was mostly created by looking at the Linux AppleSMC driver
29 * implementation and does not support IRQ.
33 #include "hw/hw.h"
34 #include "hw/isa/isa.h"
35 #include "ui/console.h"
36 #include "qemu/timer.h"
38 /* #define DEBUG_SMC */
40 #define APPLESMC_DEFAULT_IOBASE 0x300
41 /* data port used by Apple SMC */
42 #define APPLESMC_DATA_PORT 0x0
43 /* command/status port used by Apple SMC */
44 #define APPLESMC_CMD_PORT 0x4
45 #define APPLESMC_NR_PORTS 32
47 #define APPLESMC_READ_CMD 0x10
48 #define APPLESMC_WRITE_CMD 0x11
49 #define APPLESMC_GET_KEY_BY_INDEX_CMD 0x12
50 #define APPLESMC_GET_KEY_TYPE_CMD 0x13
52 #ifdef DEBUG_SMC
53 #define smc_debug(...) fprintf(stderr, "AppleSMC: " __VA_ARGS__)
54 #else
55 #define smc_debug(...) do { } while(0)
56 #endif
58 static char default_osk[64] = "This is a dummy key. Enter the real key "
59 "using the -osk parameter";
61 struct AppleSMCData {
62 uint8_t len;
63 const char *key;
64 const char *data;
65 QLIST_ENTRY(AppleSMCData) node;
68 #define APPLE_SMC(obj) OBJECT_CHECK(AppleSMCState, (obj), TYPE_APPLE_SMC)
70 typedef struct AppleSMCState AppleSMCState;
71 struct AppleSMCState {
72 ISADevice parent_obj;
74 MemoryRegion io_data;
75 MemoryRegion io_cmd;
76 uint32_t iobase;
77 uint8_t cmd;
78 uint8_t status;
79 uint8_t key[4];
80 uint8_t read_pos;
81 uint8_t data_len;
82 uint8_t data_pos;
83 uint8_t data[255];
84 uint8_t charactic[4];
85 char *osk;
86 QLIST_HEAD(, AppleSMCData) data_def;
89 static void applesmc_io_cmd_write(void *opaque, hwaddr addr, uint64_t val,
90 unsigned size)
92 AppleSMCState *s = opaque;
94 smc_debug("CMD Write B: %#x = %#x\n", addr, val);
95 switch(val) {
96 case APPLESMC_READ_CMD:
97 s->status = 0x0c;
98 break;
100 s->cmd = val;
101 s->read_pos = 0;
102 s->data_pos = 0;
105 static void applesmc_fill_data(AppleSMCState *s)
107 struct AppleSMCData *d;
109 QLIST_FOREACH(d, &s->data_def, node) {
110 if (!memcmp(d->key, s->key, 4)) {
111 smc_debug("Key matched (%s Len=%d Data=%s)\n", d->key,
112 d->len, d->data);
113 memcpy(s->data, d->data, d->len);
114 return;
119 static void applesmc_io_data_write(void *opaque, hwaddr addr, uint64_t val,
120 unsigned size)
122 AppleSMCState *s = opaque;
124 smc_debug("DATA Write B: %#x = %#x\n", addr, val);
125 switch(s->cmd) {
126 case APPLESMC_READ_CMD:
127 if(s->read_pos < 4) {
128 s->key[s->read_pos] = val;
129 s->status = 0x04;
130 } else if(s->read_pos == 4) {
131 s->data_len = val;
132 s->status = 0x05;
133 s->data_pos = 0;
134 smc_debug("Key = %c%c%c%c Len = %d\n", s->key[0],
135 s->key[1], s->key[2], s->key[3], val);
136 applesmc_fill_data(s);
138 s->read_pos++;
139 break;
143 static uint64_t applesmc_io_data_read(void *opaque, hwaddr addr1,
144 unsigned size)
146 AppleSMCState *s = opaque;
147 uint8_t retval = 0;
149 switch(s->cmd) {
150 case APPLESMC_READ_CMD:
151 if(s->data_pos < s->data_len) {
152 retval = s->data[s->data_pos];
153 smc_debug("READ_DATA[%d] = %#hhx\n", s->data_pos,
154 retval);
155 s->data_pos++;
156 if(s->data_pos == s->data_len) {
157 s->status = 0x00;
158 smc_debug("EOF\n");
159 } else
160 s->status = 0x05;
163 smc_debug("DATA Read b: %#x = %#x\n", addr1, retval);
165 return retval;
168 static uint64_t applesmc_io_cmd_read(void *opaque, hwaddr addr1, unsigned size)
170 AppleSMCState *s = opaque;
172 smc_debug("CMD Read B: %#x\n", addr1);
173 return s->status;
176 static void applesmc_add_key(AppleSMCState *s, const char *key,
177 int len, const char *data)
179 struct AppleSMCData *def;
181 def = g_malloc0(sizeof(struct AppleSMCData));
182 def->key = key;
183 def->len = len;
184 def->data = data;
186 QLIST_INSERT_HEAD(&s->data_def, def, node);
189 static void qdev_applesmc_isa_reset(DeviceState *dev)
191 AppleSMCState *s = APPLE_SMC(dev);
192 struct AppleSMCData *d, *next;
194 /* Remove existing entries */
195 QLIST_FOREACH_SAFE(d, &s->data_def, node, next) {
196 QLIST_REMOVE(d, node);
199 applesmc_add_key(s, "REV ", 6, "\x01\x13\x0f\x00\x00\x03");
200 applesmc_add_key(s, "OSK0", 32, s->osk);
201 applesmc_add_key(s, "OSK1", 32, s->osk + 32);
202 applesmc_add_key(s, "NATJ", 1, "\0");
203 applesmc_add_key(s, "MSSP", 1, "\0");
204 applesmc_add_key(s, "MSSD", 1, "\0x3");
207 static const MemoryRegionOps applesmc_data_io_ops = {
208 .write = applesmc_io_data_write,
209 .read = applesmc_io_data_read,
210 .endianness = DEVICE_NATIVE_ENDIAN,
211 .impl = {
212 .min_access_size = 1,
213 .max_access_size = 1,
217 static const MemoryRegionOps applesmc_cmd_io_ops = {
218 .write = applesmc_io_cmd_write,
219 .read = applesmc_io_cmd_read,
220 .endianness = DEVICE_NATIVE_ENDIAN,
221 .impl = {
222 .min_access_size = 1,
223 .max_access_size = 1,
227 static void applesmc_isa_realize(DeviceState *dev, Error **errp)
229 AppleSMCState *s = APPLE_SMC(dev);
231 memory_region_init_io(&s->io_data, OBJECT(s), &applesmc_data_io_ops, s,
232 "applesmc-data", 4);
233 isa_register_ioport(&s->parent_obj, &s->io_data,
234 s->iobase + APPLESMC_DATA_PORT);
236 memory_region_init_io(&s->io_cmd, OBJECT(s), &applesmc_cmd_io_ops, s,
237 "applesmc-cmd", 4);
238 isa_register_ioport(&s->parent_obj, &s->io_cmd,
239 s->iobase + APPLESMC_CMD_PORT);
241 if (!s->osk || (strlen(s->osk) != 64)) {
242 fprintf(stderr, "WARNING: Using AppleSMC with invalid key\n");
243 s->osk = default_osk;
246 QLIST_INIT(&s->data_def);
247 qdev_applesmc_isa_reset(dev);
250 static Property applesmc_isa_properties[] = {
251 DEFINE_PROP_UINT32(APPLESMC_PROP_IO_BASE, AppleSMCState, iobase,
252 APPLESMC_DEFAULT_IOBASE),
253 DEFINE_PROP_STRING("osk", AppleSMCState, osk),
254 DEFINE_PROP_END_OF_LIST(),
257 static void qdev_applesmc_class_init(ObjectClass *klass, void *data)
259 DeviceClass *dc = DEVICE_CLASS(klass);
261 dc->realize = applesmc_isa_realize;
262 dc->reset = qdev_applesmc_isa_reset;
263 dc->props = applesmc_isa_properties;
264 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
267 static const TypeInfo applesmc_isa_info = {
268 .name = TYPE_APPLE_SMC,
269 .parent = TYPE_ISA_DEVICE,
270 .instance_size = sizeof(AppleSMCState),
271 .class_init = qdev_applesmc_class_init,
274 static void applesmc_register_types(void)
276 type_register_static(&applesmc_isa_info);
279 type_init(applesmc_register_types)