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21#include <linux/module.h>
22#include <linux/init.h>
23#include <linux/err.h>
24#include <linux/rtc.h>
25#include <linux/interrupt.h>
26#include <linux/irqreturn.h>
27#include <linux/reboot.h>
28
29#include <asm/hvconsole.h>
30#include <asm/time.h>
31#include <asm/machdep.h>
32#include <asm/firmware.h>
33
34#include "beat_wrapper.h"
35#include "beat.h"
36#include "beat_interrupt.h"
37
38static int beat_pm_poweroff_flag;
39
40void beat_restart(char *cmd)
41{
42 beat_shutdown_logical_partition(!beat_pm_poweroff_flag);
43}
44
45void beat_power_off(void)
46{
47 beat_shutdown_logical_partition(0);
48}
49
50u64 beat_halt_code = 0x1000000000000000UL;
51EXPORT_SYMBOL(beat_halt_code);
52
53void beat_halt(void)
54{
55 beat_shutdown_logical_partition(beat_halt_code);
56}
57
58int 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
69void 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
82ssize_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;
98 if (beat_eeprom_read(i, len, p))
99 return -EIO;
100
101 p += len;
102 i += len;
103 }
104 *index = i;
105 return p - buf;
106}
107
108ssize_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;
124 if (beat_eeprom_write(i, len, p))
125 return -EIO;
126
127 p += len;
128 i += len;
129 }
130 *index = i;
131 return p - buf;
132}
133
134ssize_t beat_nvram_get_size(void)
135{
136 return BEAT_NVRAM_SIZE;
137}
138
139int 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
146int64_t beat_get_term_char(u64 vterm, u64 *len, u64 *t1, u64 *t2)
147{
148 u64 db[2];
149 s64 ret;
150
151 ret = beat_get_characters_from_console(vterm, len, (u8 *)db);
152 if (ret == 0) {
153 *t1 = db[0];
154 *t2 = db[1];
155 }
156 return ret;
157}
158EXPORT_SYMBOL(beat_get_term_char);
159
160int64_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;
166 return beat_put_characters_to_console(vterm, len, (u8 *)db);
167}
168EXPORT_SYMBOL(beat_put_term_char);
169
170void beat_power_save(void)
171{
172 beat_pause(0);
173}
174
175#ifdef CONFIG_KEXEC
176void beat_kexec_cpu_down(int crash, int secondary)
177{
178 beatic_deinit_IRQ();
179}
180#endif
181
182static 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
190static 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
198static 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
207static 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
233 rc = request_irq(virq, ev->handler, IRQF_DISABLED,
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;
244 path[1] = 0x627574746f6e0000ul;
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
255static 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
264device_initcall(beat_event_init);
265
