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9#include <linux/types.h>
10#include <linux/kernel.h>
11#include <linux/sched.h>
12#include <linux/interrupt.h>
13#include <linux/delay.h>
14#include <linux/module.h>
15
16#include <asm/openprom.h>
17#include <asm/oplib.h>
18#include <asm/system.h>
19#include <asm/ldc.h>
20
21static int prom_service_exists(const char *service_name)
22{
23 unsigned long args[5];
24
25 args[0] = (unsigned long) "test";
26 args[1] = 1;
27 args[2] = 1;
28 args[3] = (unsigned long) service_name;
29 args[4] = (unsigned long) -1;
30
31 p1275_cmd_direct(args);
32
33 if (args[4])
34 return 0;
35 return 1;
36}
37
38void prom_sun4v_guest_soft_state(void)
39{
40 const char *svc = "SUNW,soft-state-supported";
41 unsigned long args[3];
42
43 if (!prom_service_exists(svc))
44 return;
45 args[0] = (unsigned long) svc;
46 args[1] = 0;
47 args[2] = 0;
48 p1275_cmd_direct(args);
49}
50
51
52void prom_reboot(const char *bcommand)
53{
54 unsigned long args[4];
55
56#ifdef CONFIG_SUN_LDOMS
57 if (ldom_domaining_enabled)
58 ldom_reboot(bcommand);
59#endif
60 args[0] = (unsigned long) "boot";
61 args[1] = 1;
62 args[2] = 0;
63 args[3] = (unsigned long) bcommand;
64
65 p1275_cmd_direct(args);
66}
67
68
69void prom_feval(const char *fstring)
70{
71 unsigned long args[5];
72
73 if (!fstring || fstring[0] == 0)
74 return;
75 args[0] = (unsigned long) "interpret";
76 args[1] = 1;
77 args[2] = 1;
78 args[3] = (unsigned long) fstring;
79 args[4] = (unsigned long) -1;
80
81 p1275_cmd_direct(args);
82}
83EXPORT_SYMBOL(prom_feval);
84
85#ifdef CONFIG_SMP
86extern void smp_capture(void);
87extern void smp_release(void);
88#endif
89
90
91
92
93void prom_cmdline(void)
94{
95 unsigned long args[3];
96 unsigned long flags;
97
98 local_irq_save(flags);
99
100#ifdef CONFIG_SMP
101 smp_capture();
102#endif
103
104 args[0] = (unsigned long) "enter";
105 args[1] = 0;
106 args[2] = 0;
107
108 p1275_cmd_direct(args);
109
110#ifdef CONFIG_SMP
111 smp_release();
112#endif
113
114 local_irq_restore(flags);
115}
116
117
118
119
120void notrace prom_halt(void)
121{
122 unsigned long args[3];
123
124#ifdef CONFIG_SUN_LDOMS
125 if (ldom_domaining_enabled)
126 ldom_power_off();
127#endif
128again:
129 args[0] = (unsigned long) "exit";
130 args[1] = 0;
131 args[2] = 0;
132 p1275_cmd_direct(args);
133 goto again;
134}
135
136void prom_halt_power_off(void)
137{
138 unsigned long args[3];
139
140#ifdef CONFIG_SUN_LDOMS
141 if (ldom_domaining_enabled)
142 ldom_power_off();
143#endif
144 args[0] = (unsigned long) "SUNW,power-off";
145 args[1] = 0;
146 args[2] = 0;
147 p1275_cmd_direct(args);
148
149
150 prom_halt();
151}
152
153
154
155
156
157unsigned char prom_get_idprom(char *idbuf, int num_bytes)
158{
159 int len;
160
161 len = prom_getproplen(prom_root_node, "idprom");
162 if ((len >num_bytes) || (len == -1))
163 return 0xff;
164 if (!prom_getproperty(prom_root_node, "idprom", idbuf, num_bytes))
165 return idbuf[0];
166
167 return 0xff;
168}
169
170int prom_get_mmu_ihandle(void)
171{
172 phandle node;
173 int ret;
174
175 if (prom_mmu_ihandle_cache != 0)
176 return prom_mmu_ihandle_cache;
177
178 node = prom_finddevice(prom_chosen_path);
179 ret = prom_getint(node, prom_mmu_name);
180 if (ret == -1 || ret == 0)
181 prom_mmu_ihandle_cache = -1;
182 else
183 prom_mmu_ihandle_cache = ret;
184
185 return ret;
186}
187
188static int prom_get_memory_ihandle(void)
189{
190 static int memory_ihandle_cache;
191 phandle node;
192 int ret;
193
194 if (memory_ihandle_cache != 0)
195 return memory_ihandle_cache;
196
197 node = prom_finddevice("/chosen");
198 ret = prom_getint(node, "memory");
199 if (ret == -1 || ret == 0)
200 memory_ihandle_cache = -1;
201 else
202 memory_ihandle_cache = ret;
203
204 return ret;
205}
206
207
208static long tlb_load(const char *type, unsigned long index,
209 unsigned long tte_data, unsigned long vaddr)
210{
211 unsigned long args[9];
212
213 args[0] = (unsigned long) prom_callmethod_name;
214 args[1] = 5;
215 args[2] = 1;
216 args[3] = (unsigned long) type;
217 args[4] = (unsigned int) prom_get_mmu_ihandle();
218 args[5] = vaddr;
219 args[6] = tte_data;
220 args[7] = index;
221 args[8] = (unsigned long) -1;
222
223 p1275_cmd_direct(args);
224
225 return (long) args[8];
226}
227
228long prom_itlb_load(unsigned long index,
229 unsigned long tte_data,
230 unsigned long vaddr)
231{
232 return tlb_load("SUNW,itlb-load", index, tte_data, vaddr);
233}
234
235long prom_dtlb_load(unsigned long index,
236 unsigned long tte_data,
237 unsigned long vaddr)
238{
239 return tlb_load("SUNW,dtlb-load", index, tte_data, vaddr);
240}
241
242int prom_map(int mode, unsigned long size,
243 unsigned long vaddr, unsigned long paddr)
244{
245 unsigned long args[11];
246 int ret;
247
248 args[0] = (unsigned long) prom_callmethod_name;
249 args[1] = 7;
250 args[2] = 1;
251 args[3] = (unsigned long) prom_map_name;
252 args[4] = (unsigned int) prom_get_mmu_ihandle();
253 args[5] = (unsigned int) mode;
254 args[6] = size;
255 args[7] = vaddr;
256 args[8] = 0;
257 args[9] = paddr;
258 args[10] = (unsigned long) -1;
259
260 p1275_cmd_direct(args);
261
262 ret = (int) args[10];
263 if (ret == 0)
264 ret = -1;
265 return ret;
266}
267
268void prom_unmap(unsigned long size, unsigned long vaddr)
269{
270 unsigned long args[7];
271
272 args[0] = (unsigned long) prom_callmethod_name;
273 args[1] = 4;
274 args[2] = 0;
275 args[3] = (unsigned long) prom_unmap_name;
276 args[4] = (unsigned int) prom_get_mmu_ihandle();
277 args[5] = size;
278 args[6] = vaddr;
279
280 p1275_cmd_direct(args);
281}
282
283
284
285
286int prom_retain(const char *name, unsigned long size,
287 unsigned long align, unsigned long *paddr)
288{
289 unsigned long args[11];
290
291 args[0] = (unsigned long) prom_callmethod_name;
292 args[1] = 5;
293 args[2] = 3;
294 args[3] = (unsigned long) "SUNW,retain";
295 args[4] = (unsigned int) prom_get_memory_ihandle();
296 args[5] = align;
297 args[6] = size;
298 args[7] = (unsigned long) name;
299 args[8] = (unsigned long) -1;
300 args[9] = (unsigned long) -1;
301 args[10] = (unsigned long) -1;
302
303 p1275_cmd_direct(args);
304
305 if (args[8])
306 return (int) args[8];
307
308
309
310
311
312 *paddr = args[10];
313
314 return 0;
315}
316
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320
321
322
323int prom_getunumber(int syndrome_code,
324 unsigned long phys_addr,
325 char *buf, int buflen)
326{
327 unsigned long args[12];
328
329 args[0] = (unsigned long) prom_callmethod_name;
330 args[1] = 7;
331 args[2] = 2;
332 args[3] = (unsigned long) "SUNW,get-unumber";
333 args[4] = (unsigned int) prom_get_memory_ihandle();
334 args[5] = buflen;
335 args[6] = (unsigned long) buf;
336 args[7] = 0;
337 args[8] = phys_addr;
338 args[9] = (unsigned int) syndrome_code;
339 args[10] = (unsigned long) -1;
340 args[11] = (unsigned long) -1;
341
342 p1275_cmd_direct(args);
343
344 return (int) args[10];
345}
346
347
348void prom_sleepself(void)
349{
350 unsigned long args[3];
351
352 args[0] = (unsigned long) "SUNW,sleep-self";
353 args[1] = 0;
354 args[2] = 0;
355 p1275_cmd_direct(args);
356}
357
358int prom_sleepsystem(void)
359{
360 unsigned long args[4];
361
362 args[0] = (unsigned long) "SUNW,sleep-system";
363 args[1] = 0;
364 args[2] = 1;
365 args[3] = (unsigned long) -1;
366 p1275_cmd_direct(args);
367
368 return (int) args[3];
369}
370
371int prom_wakeupsystem(void)
372{
373 unsigned long args[4];
374
375 args[0] = (unsigned long) "SUNW,wakeup-system";
376 args[1] = 0;
377 args[2] = 1;
378 args[3] = (unsigned long) -1;
379 p1275_cmd_direct(args);
380
381 return (int) args[3];
382}
383
384#ifdef CONFIG_SMP
385void prom_startcpu(int cpunode, unsigned long pc, unsigned long arg)
386{
387 unsigned long args[6];
388
389 args[0] = (unsigned long) "SUNW,start-cpu";
390 args[1] = 3;
391 args[2] = 0;
392 args[3] = (unsigned int) cpunode;
393 args[4] = pc;
394 args[5] = arg;
395 p1275_cmd_direct(args);
396}
397
398void prom_startcpu_cpuid(int cpuid, unsigned long pc, unsigned long arg)
399{
400 unsigned long args[6];
401
402 args[0] = (unsigned long) "SUNW,start-cpu-by-cpuid";
403 args[1] = 3;
404 args[2] = 0;
405 args[3] = (unsigned int) cpuid;
406 args[4] = pc;
407 args[5] = arg;
408 p1275_cmd_direct(args);
409}
410
411void prom_stopcpu_cpuid(int cpuid)
412{
413 unsigned long args[4];
414
415 args[0] = (unsigned long) "SUNW,stop-cpu-by-cpuid";
416 args[1] = 1;
417 args[2] = 0;
418 args[3] = (unsigned int) cpuid;
419 p1275_cmd_direct(args);
420}
421
422void prom_stopself(void)
423{
424 unsigned long args[3];
425
426 args[0] = (unsigned long) "SUNW,stop-self";
427 args[1] = 0;
428 args[2] = 0;
429 p1275_cmd_direct(args);
430}
431
432void prom_idleself(void)
433{
434 unsigned long args[3];
435
436 args[0] = (unsigned long) "SUNW,idle-self";
437 args[1] = 0;
438 args[2] = 0;
439 p1275_cmd_direct(args);
440}
441
442void prom_resumecpu(int cpunode)
443{
444 unsigned long args[4];
445
446 args[0] = (unsigned long) "SUNW,resume-cpu";
447 args[1] = 1;
448 args[2] = 0;
449 args[3] = (unsigned int) cpunode;
450 p1275_cmd_direct(args);
451}
452#endif
453