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c347b798 IK |
1 | /* |
2 | * Simple routines for Celleb/Beat | |
3 | * | |
4 | * (C) Copyright 2006-2007 TOSHIBA CORPORATION | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program; if not, write to the Free Software Foundation, Inc., | |
18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
19 | */ | |
20 | ||
4b16f8e2 | 21 | #include <linux/export.h> |
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22 | #include <linux/init.h> |
23 | #include <linux/err.h> | |
24 | #include <linux/rtc.h> | |
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25 | #include <linux/interrupt.h> |
26 | #include <linux/irqreturn.h> | |
27 | #include <linux/reboot.h> | |
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28 | |
29 | #include <asm/hvconsole.h> | |
30 | #include <asm/time.h> | |
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31 | #include <asm/machdep.h> |
32 | #include <asm/firmware.h> | |
c347b798 | 33 | |
ad2c6987 | 34 | #include "beat_wrapper.h" |
c347b798 | 35 | #include "beat.h" |
ad2c6987 | 36 | #include "beat_interrupt.h" |
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37 | |
38 | static int beat_pm_poweroff_flag; | |
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39 | |
40 | void beat_restart(char *cmd) | |
41 | { | |
b4184803 | 42 | beat_shutdown_logical_partition(!beat_pm_poweroff_flag); |
c347b798 IK |
43 | } |
44 | ||
45 | void beat_power_off(void) | |
46 | { | |
47 | beat_shutdown_logical_partition(0); | |
48 | } | |
49 | ||
50 | u64 beat_halt_code = 0x1000000000000000UL; | |
2fe37a6e | 51 | EXPORT_SYMBOL(beat_halt_code); |
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52 | |
53 | void beat_halt(void) | |
54 | { | |
55 | beat_shutdown_logical_partition(beat_halt_code); | |
56 | } | |
57 | ||
58 | int beat_set_rtc_time(struct rtc_time *rtc_time) | |
59 | { | |
60 | u64 tim; | |
61 | tim = mktime(rtc_time->tm_year+1900, | |
62 | rtc_time->tm_mon+1, rtc_time->tm_mday, | |
63 | rtc_time->tm_hour, rtc_time->tm_min, rtc_time->tm_sec); | |
64 | if (beat_rtc_write(tim)) | |
65 | return -1; | |
66 | return 0; | |
67 | } | |
68 | ||
69 | void beat_get_rtc_time(struct rtc_time *rtc_time) | |
70 | { | |
71 | u64 tim; | |
72 | ||
73 | if (beat_rtc_read(&tim)) | |
74 | tim = 0; | |
75 | to_tm(tim, rtc_time); | |
76 | rtc_time->tm_year -= 1900; | |
77 | rtc_time->tm_mon -= 1; | |
78 | } | |
79 | ||
80 | #define BEAT_NVRAM_SIZE 4096 | |
81 | ||
82 | ssize_t beat_nvram_read(char *buf, size_t count, loff_t *index) | |
83 | { | |
84 | unsigned int i; | |
85 | unsigned long len; | |
86 | char *p = buf; | |
87 | ||
88 | if (*index >= BEAT_NVRAM_SIZE) | |
89 | return -ENODEV; | |
90 | i = *index; | |
91 | if (i + count > BEAT_NVRAM_SIZE) | |
92 | count = BEAT_NVRAM_SIZE - i; | |
93 | ||
94 | for (; count != 0; count -= len) { | |
95 | len = count; | |
96 | if (len > BEAT_NVRW_CNT) | |
97 | len = BEAT_NVRW_CNT; | |
2fe37a6e | 98 | if (beat_eeprom_read(i, len, p)) |
c347b798 | 99 | return -EIO; |
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100 | |
101 | p += len; | |
102 | i += len; | |
103 | } | |
104 | *index = i; | |
105 | return p - buf; | |
106 | } | |
107 | ||
108 | ssize_t beat_nvram_write(char *buf, size_t count, loff_t *index) | |
109 | { | |
110 | unsigned int i; | |
111 | unsigned long len; | |
112 | char *p = buf; | |
113 | ||
114 | if (*index >= BEAT_NVRAM_SIZE) | |
115 | return -ENODEV; | |
116 | i = *index; | |
117 | if (i + count > BEAT_NVRAM_SIZE) | |
118 | count = BEAT_NVRAM_SIZE - i; | |
119 | ||
120 | for (; count != 0; count -= len) { | |
121 | len = count; | |
122 | if (len > BEAT_NVRW_CNT) | |
123 | len = BEAT_NVRW_CNT; | |
2fe37a6e | 124 | if (beat_eeprom_write(i, len, p)) |
c347b798 | 125 | return -EIO; |
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126 | |
127 | p += len; | |
128 | i += len; | |
129 | } | |
130 | *index = i; | |
131 | return p - buf; | |
132 | } | |
133 | ||
134 | ssize_t beat_nvram_get_size(void) | |
135 | { | |
136 | return BEAT_NVRAM_SIZE; | |
137 | } | |
138 | ||
139 | int beat_set_xdabr(unsigned long dabr) | |
140 | { | |
141 | if (beat_set_dabr(dabr, DABRX_KERNEL | DABRX_USER)) | |
142 | return -1; | |
143 | return 0; | |
144 | } | |
145 | ||
146 | int64_t beat_get_term_char(u64 vterm, u64 *len, u64 *t1, u64 *t2) | |
147 | { | |
148 | u64 db[2]; | |
149 | s64 ret; | |
150 | ||
2fe37a6e | 151 | ret = beat_get_characters_from_console(vterm, len, (u8 *)db); |
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152 | if (ret == 0) { |
153 | *t1 = db[0]; | |
154 | *t2 = db[1]; | |
155 | } | |
156 | return ret; | |
157 | } | |
2fe37a6e | 158 | EXPORT_SYMBOL(beat_get_term_char); |
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159 | |
160 | int64_t beat_put_term_char(u64 vterm, u64 len, u64 t1, u64 t2) | |
161 | { | |
162 | u64 db[2]; | |
163 | ||
164 | db[0] = t1; | |
165 | db[1] = t2; | |
2fe37a6e | 166 | return beat_put_characters_to_console(vterm, len, (u8 *)db); |
c347b798 | 167 | } |
2fe37a6e | 168 | EXPORT_SYMBOL(beat_put_term_char); |
c347b798 | 169 | |
80755b41 IK |
170 | void beat_power_save(void) |
171 | { | |
172 | beat_pause(0); | |
173 | } | |
174 | ||
175 | #ifdef CONFIG_KEXEC | |
176 | void beat_kexec_cpu_down(int crash, int secondary) | |
177 | { | |
178 | beatic_deinit_IRQ(); | |
179 | } | |
180 | #endif | |
181 | ||
b4184803 IK |
182 | static irqreturn_t beat_power_event(int virq, void *arg) |
183 | { | |
184 | printk(KERN_DEBUG "Beat: power button pressed\n"); | |
185 | beat_pm_poweroff_flag = 1; | |
186 | ctrl_alt_del(); | |
187 | return IRQ_HANDLED; | |
188 | } | |
189 | ||
190 | static irqreturn_t beat_reset_event(int virq, void *arg) | |
191 | { | |
192 | printk(KERN_DEBUG "Beat: reset button pressed\n"); | |
193 | beat_pm_poweroff_flag = 0; | |
194 | ctrl_alt_del(); | |
195 | return IRQ_HANDLED; | |
196 | } | |
197 | ||
198 | static struct beat_event_list { | |
199 | const char *typecode; | |
200 | irq_handler_t handler; | |
201 | unsigned int virq; | |
202 | } beat_event_list[] = { | |
203 | { "power", beat_power_event, 0 }, | |
204 | { "reset", beat_reset_event, 0 }, | |
205 | }; | |
206 | ||
207 | static int __init beat_register_event(void) | |
208 | { | |
209 | u64 path[4], data[2]; | |
210 | int rc, i; | |
211 | unsigned int virq; | |
212 | ||
213 | for (i = 0; i < ARRAY_SIZE(beat_event_list); i++) { | |
214 | struct beat_event_list *ev = &beat_event_list[i]; | |
215 | ||
216 | if (beat_construct_event_receive_port(data) != 0) { | |
217 | printk(KERN_ERR "Beat: " | |
218 | "cannot construct event receive port for %s\n", | |
219 | ev->typecode); | |
220 | return -EINVAL; | |
221 | } | |
222 | ||
223 | virq = irq_create_mapping(NULL, data[0]); | |
224 | if (virq == NO_IRQ) { | |
225 | printk(KERN_ERR "Beat: failed to get virtual IRQ" | |
226 | " for event receive port for %s\n", | |
227 | ev->typecode); | |
228 | beat_destruct_event_receive_port(data[0]); | |
229 | return -EIO; | |
230 | } | |
231 | ev->virq = virq; | |
232 | ||
a3a9f3b4 | 233 | rc = request_irq(virq, ev->handler, 0, |
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234 | ev->typecode, NULL); |
235 | if (rc != 0) { | |
236 | printk(KERN_ERR "Beat: failed to request virtual IRQ" | |
237 | " for event receive port for %s\n", | |
238 | ev->typecode); | |
239 | beat_destruct_event_receive_port(data[0]); | |
240 | return rc; | |
241 | } | |
242 | ||
243 | path[0] = 0x1000000065780000ul; /* 1,ex */ | |
244 | path[1] = 0x627574746f6e0000ul; /* button */ | |
245 | path[2] = 0; | |
246 | strncpy((char *)&path[2], ev->typecode, 8); | |
247 | path[3] = 0; | |
248 | data[1] = 0; | |
249 | ||
250 | beat_create_repository_node(path, data); | |
251 | } | |
252 | return 0; | |
253 | } | |
254 | ||
255 | static int __init beat_event_init(void) | |
256 | { | |
257 | if (!firmware_has_feature(FW_FEATURE_BEAT)) | |
258 | return -EINVAL; | |
259 | ||
260 | beat_pm_poweroff_flag = 0; | |
261 | return beat_register_event(); | |
262 | } | |
263 | ||
264 | device_initcall(beat_event_init); |