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25#undef PDC_CHASSIS_DEBUG
26#ifdef PDC_CHASSIS_DEBUG
27#define DPRINTK(fmt, args...) printk(fmt, ## args)
28#else
29#define DPRINTK(fmt, args...)
30#endif
31
32#include <linux/init.h>
33#include <linux/kernel.h>
34#include <linux/reboot.h>
35#include <linux/notifier.h>
36#include <linux/cache.h>
37#include <linux/proc_fs.h>
38
39#include <asm/pdc_chassis.h>
40#include <asm/processor.h>
41#include <asm/pdc.h>
42#include <asm/pdcpat.h>
43
44#define PDC_CHASSIS_VER "0.05"
45
46#ifdef CONFIG_PDC_CHASSIS
47static unsigned int pdc_chassis_enabled __read_mostly = 1;
48
49
50
51
52
53
54
55
56static int __init pdc_chassis_setup(char *str)
57{
58
59 get_option(&str, &pdc_chassis_enabled);
60 return 1;
61}
62__setup("pdcchassis=", pdc_chassis_setup);
63
64
65
66
67
68
69
70
71
72#if 0
73static void __init pdc_chassis_checkold(void)
74{
75 switch(CPU_HVERSION) {
76 case 0x480:
77 case 0x481:
78 case 0x482:
79 case 0x483:
80 case 0x516:
81 break;
82
83 default:
84 break;
85 }
86 DPRINTK(KERN_DEBUG "%s: pdc_chassis_checkold(); pdc_chassis_old = %d\n", __FILE__, pdc_chassis_old);
87}
88#endif
89
90
91
92
93
94
95
96static int pdc_chassis_panic_event(struct notifier_block *this,
97 unsigned long event, void *ptr)
98{
99 pdc_chassis_send_status(PDC_CHASSIS_DIRECT_PANIC);
100 return NOTIFY_DONE;
101}
102
103
104static struct notifier_block pdc_chassis_panic_block = {
105 .notifier_call = pdc_chassis_panic_event,
106 .priority = INT_MAX,
107};
108
109
110
111
112
113
114
115
116static int pdc_chassis_reboot_event(struct notifier_block *this,
117 unsigned long event, void *ptr)
118{
119 pdc_chassis_send_status(PDC_CHASSIS_DIRECT_SHUTDOWN);
120 return NOTIFY_DONE;
121}
122
123
124static struct notifier_block pdc_chassis_reboot_block = {
125 .notifier_call = pdc_chassis_reboot_event,
126 .priority = INT_MAX,
127};
128#endif
129
130
131
132
133
134
135void __init parisc_pdc_chassis_init(void)
136{
137#ifdef CONFIG_PDC_CHASSIS
138 if (likely(pdc_chassis_enabled)) {
139 DPRINTK(KERN_DEBUG "%s: parisc_pdc_chassis_init()\n", __FILE__);
140
141
142 printk(KERN_INFO "Enabling %s chassis codes support v%s\n",
143 is_pdc_pat() ? "PDC_PAT" : "regular",
144 PDC_CHASSIS_VER);
145
146
147 atomic_notifier_chain_register(&panic_notifier_list,
148 &pdc_chassis_panic_block);
149
150
151 register_reboot_notifier(&pdc_chassis_reboot_block);
152 }
153#endif
154}
155
156
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159
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161
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167
168
169
170
171int pdc_chassis_send_status(int message)
172{
173
174 int retval = 0;
175#ifdef CONFIG_PDC_CHASSIS
176 if (likely(pdc_chassis_enabled)) {
177
178 DPRINTK(KERN_DEBUG "%s: pdc_chassis_send_status(%d)\n", __FILE__, message);
179
180#ifdef CONFIG_64BIT
181 if (is_pdc_pat()) {
182 switch(message) {
183 case PDC_CHASSIS_DIRECT_BSTART:
184 retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_BSTART, PDC_CHASSIS_LSTATE_RUN_NORMAL);
185 break;
186
187 case PDC_CHASSIS_DIRECT_BCOMPLETE:
188 retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_BCOMPLETE, PDC_CHASSIS_LSTATE_RUN_NORMAL);
189 break;
190
191 case PDC_CHASSIS_DIRECT_SHUTDOWN:
192 retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_SHUTDOWN, PDC_CHASSIS_LSTATE_NONOS);
193 break;
194
195 case PDC_CHASSIS_DIRECT_PANIC:
196 retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_PANIC, PDC_CHASSIS_LSTATE_RUN_CRASHREC);
197 break;
198
199 case PDC_CHASSIS_DIRECT_LPMC:
200 retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_LPMC, PDC_CHASSIS_LSTATE_RUN_SYSINT);
201 break;
202
203 case PDC_CHASSIS_DIRECT_HPMC:
204 retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_HPMC, PDC_CHASSIS_LSTATE_RUN_NCRIT);
205 break;
206
207 default:
208 retval = -1;
209 }
210 } else retval = -1;
211#else
212 if (1) {
213 switch (message) {
214 case PDC_CHASSIS_DIRECT_BSTART:
215 retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_INIT));
216 break;
217
218 case PDC_CHASSIS_DIRECT_BCOMPLETE:
219 retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_RUN));
220 break;
221
222 case PDC_CHASSIS_DIRECT_SHUTDOWN:
223 retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_SHUT));
224 break;
225
226 case PDC_CHASSIS_DIRECT_HPMC:
227 case PDC_CHASSIS_DIRECT_PANIC:
228 retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_FLT));
229 break;
230
231 case PDC_CHASSIS_DIRECT_LPMC:
232 retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_WARN));
233 break;
234
235 default:
236 retval = -1;
237 }
238 } else retval = -1;
239#endif
240 }
241#endif
242 return retval;
243}
244
245#ifdef CONFIG_PDC_CHASSIS_WARN
246#ifdef CONFIG_PROC_FS
247static int pdc_chassis_warn_pread(char *page, char **start, off_t off,
248 int count, int *eof, void *data)
249{
250 char *out = page;
251 int len, ret;
252 unsigned long warn;
253 u32 warnreg;
254
255 ret = pdc_chassis_warn(&warn);
256 if (ret != PDC_OK)
257 return -EIO;
258
259 warnreg = (warn & 0xFFFFFFFF);
260
261 if ((warnreg >> 24) & 0xFF)
262 out += sprintf(out, "Chassis component failure! (eg fan or PSU): 0x%.2x\n", ((warnreg >> 24) & 0xFF));
263
264 out += sprintf(out, "Battery: %s\n", (warnreg & 0x04) ? "Low!" : "OK");
265 out += sprintf(out, "Temp low: %s\n", (warnreg & 0x02) ? "Exceeded!" : "OK");
266 out += sprintf(out, "Temp mid: %s\n", (warnreg & 0x01) ? "Exceeded!" : "OK");
267
268 len = out - page - off;
269 if (len < count) {
270 *eof = 1;
271 if (len <= 0) return 0;
272 } else {
273 len = count;
274 }
275 *start = page + off;
276 return len;
277}
278
279static int __init pdc_chassis_create_procfs(void)
280{
281 unsigned long test;
282 int ret;
283
284 ret = pdc_chassis_warn(&test);
285 if ((ret == PDC_BAD_PROC) || (ret == PDC_BAD_OPTION)) {
286
287 printk(KERN_INFO "Chassis warnings not supported.\n");
288 return 0;
289 }
290
291 printk(KERN_INFO "Enabling PDC chassis warnings support v%s\n",
292 PDC_CHASSIS_VER);
293 create_proc_read_entry("chassis", 0400, NULL, pdc_chassis_warn_pread,
294 NULL);
295 return 0;
296}
297
298__initcall(pdc_chassis_create_procfs);
299
300#endif
301#endif
302