This source file includes following definitions.
- default_handler
- ia64_sal_strerror
- ia64_sal_handler_init
- check_versions
- sal_desc_entry_point
- set_smp_redirect
- sal_desc_platform_feature
- sal_desc_ap_wakeup
- chk_nointroute_opt
- sal_desc_ap_wakeup
- force_pal_cache_flush
- check_sal_cache_flush
- ia64_sal_cache_flush
- ia64_sal_init
- ia64_sal_oemcall
- ia64_sal_oemcall_nolock
- ia64_sal_oemcall_reentrant
- ia64_sal_freq_base
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11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/module.h>
14 #include <linux/spinlock.h>
15 #include <linux/string.h>
16
17 #include <asm/delay.h>
18 #include <asm/page.h>
19 #include <asm/sal.h>
20 #include <asm/pal.h>
21
22 __cacheline_aligned DEFINE_SPINLOCK(sal_lock);
23 unsigned long sal_platform_features;
24
25 unsigned short sal_revision;
26 unsigned short sal_version;
27
28 #define SAL_MAJOR(x) ((x) >> 8)
29 #define SAL_MINOR(x) ((x) & 0xff)
30
31 static struct {
32 void *addr;
33 void *gpval;
34 } pdesc;
35
36 static long
37 default_handler (void)
38 {
39 return -1;
40 }
41
42 ia64_sal_handler ia64_sal = (ia64_sal_handler) default_handler;
43 ia64_sal_desc_ptc_t *ia64_ptc_domain_info;
44
45 const char *
46 ia64_sal_strerror (long status)
47 {
48 const char *str;
49 switch (status) {
50 case 0: str = "Call completed without error"; break;
51 case 1: str = "Effect a warm boot of the system to complete "
52 "the update"; break;
53 case -1: str = "Not implemented"; break;
54 case -2: str = "Invalid argument"; break;
55 case -3: str = "Call completed with error"; break;
56 case -4: str = "Virtual address not registered"; break;
57 case -5: str = "No information available"; break;
58 case -6: str = "Insufficient space to add the entry"; break;
59 case -7: str = "Invalid entry_addr value"; break;
60 case -8: str = "Invalid interrupt vector"; break;
61 case -9: str = "Requested memory not available"; break;
62 case -10: str = "Unable to write to the NVM device"; break;
63 case -11: str = "Invalid partition type specified"; break;
64 case -12: str = "Invalid NVM_Object id specified"; break;
65 case -13: str = "NVM_Object already has the maximum number "
66 "of partitions"; break;
67 case -14: str = "Insufficient space in partition for the "
68 "requested write sub-function"; break;
69 case -15: str = "Insufficient data buffer space for the "
70 "requested read record sub-function"; break;
71 case -16: str = "Scratch buffer required for the write/delete "
72 "sub-function"; break;
73 case -17: str = "Insufficient space in the NVM_Object for the "
74 "requested create sub-function"; break;
75 case -18: str = "Invalid value specified in the partition_rec "
76 "argument"; break;
77 case -19: str = "Record oriented I/O not supported for this "
78 "partition"; break;
79 case -20: str = "Bad format of record to be written or "
80 "required keyword variable not "
81 "specified"; break;
82 default: str = "Unknown SAL status code"; break;
83 }
84 return str;
85 }
86
87 void __init
88 ia64_sal_handler_init (void *entry_point, void *gpval)
89 {
90
91 pdesc.addr = entry_point;
92 pdesc.gpval = gpval;
93 ia64_sal = (ia64_sal_handler) &pdesc;
94 }
95
96 static void __init
97 check_versions (struct ia64_sal_systab *systab)
98 {
99 sal_revision = (systab->sal_rev_major << 8) | systab->sal_rev_minor;
100 sal_version = (systab->sal_b_rev_major << 8) | systab->sal_b_rev_minor;
101
102
103 if ((sal_revision == SAL_VERSION_CODE(49, 29))
104 && (sal_version == SAL_VERSION_CODE(49, 29)))
105 {
106
107
108
109
110 sal_revision = SAL_VERSION_CODE(2, 8);
111 sal_version = SAL_VERSION_CODE(0, 0);
112 }
113 }
114
115 static void __init
116 sal_desc_entry_point (void *p)
117 {
118 struct ia64_sal_desc_entry_point *ep = p;
119 ia64_pal_handler_init(__va(ep->pal_proc));
120 ia64_sal_handler_init(__va(ep->sal_proc), __va(ep->gp));
121 }
122
123 #ifdef CONFIG_SMP
124 static void __init
125 set_smp_redirect (int flag)
126 {
127 #ifndef CONFIG_HOTPLUG_CPU
128 if (no_int_routing)
129 smp_int_redirect &= ~flag;
130 else
131 smp_int_redirect |= flag;
132 #else
133
134
135
136
137
138
139
140
141 no_int_routing=1;
142 smp_int_redirect &= ~flag;
143 #endif
144 }
145 #else
146 #define set_smp_redirect(flag) do { } while (0)
147 #endif
148
149 static void __init
150 sal_desc_platform_feature (void *p)
151 {
152 struct ia64_sal_desc_platform_feature *pf = p;
153 sal_platform_features = pf->feature_mask;
154
155 printk(KERN_INFO "SAL Platform features:");
156 if (!sal_platform_features) {
157 printk(" None\n");
158 return;
159 }
160
161 if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_BUS_LOCK)
162 printk(" BusLock");
163 if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_IRQ_REDIR_HINT) {
164 printk(" IRQ_Redirection");
165 set_smp_redirect(SMP_IRQ_REDIRECTION);
166 }
167 if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_IPI_REDIR_HINT) {
168 printk(" IPI_Redirection");
169 set_smp_redirect(SMP_IPI_REDIRECTION);
170 }
171 if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT)
172 printk(" ITC_Drift");
173 printk("\n");
174 }
175
176 #ifdef CONFIG_SMP
177 static void __init
178 sal_desc_ap_wakeup (void *p)
179 {
180 struct ia64_sal_desc_ap_wakeup *ap = p;
181
182 switch (ap->mechanism) {
183 case IA64_SAL_AP_EXTERNAL_INT:
184 ap_wakeup_vector = ap->vector;
185 printk(KERN_INFO "SAL: AP wakeup using external interrupt "
186 "vector 0x%lx\n", ap_wakeup_vector);
187 break;
188 default:
189 printk(KERN_ERR "SAL: AP wakeup mechanism unsupported!\n");
190 break;
191 }
192 }
193
194 static void __init
195 chk_nointroute_opt(void)
196 {
197 char *cp;
198
199 for (cp = boot_command_line; *cp; ) {
200 if (memcmp(cp, "nointroute", 10) == 0) {
201 no_int_routing = 1;
202 printk ("no_int_routing on\n");
203 break;
204 } else {
205 while (*cp != ' ' && *cp)
206 ++cp;
207 while (*cp == ' ')
208 ++cp;
209 }
210 }
211 }
212
213 #else
214 static void __init sal_desc_ap_wakeup(void *p) { }
215 #endif
216
217
218
219
220
221
222
223
224 static int sal_cache_flush_drops_interrupts;
225
226 static int __init
227 force_pal_cache_flush(char *str)
228 {
229 sal_cache_flush_drops_interrupts = 1;
230 return 0;
231 }
232 early_param("force_pal_cache_flush", force_pal_cache_flush);
233
234 void __init
235 check_sal_cache_flush (void)
236 {
237 unsigned long flags;
238 int cpu;
239 u64 vector, cache_type = 3;
240 struct ia64_sal_retval isrv;
241
242 if (sal_cache_flush_drops_interrupts)
243 return;
244
245 cpu = get_cpu();
246 local_irq_save(flags);
247
248
249
250
251
252 ia64_send_ipi(cpu, IA64_TIMER_VECTOR, IA64_IPI_DM_INT, 0);
253
254 while (!ia64_get_irr(IA64_TIMER_VECTOR))
255 cpu_relax();
256
257 SAL_CALL(isrv, SAL_CACHE_FLUSH, cache_type, 0, 0, 0, 0, 0, 0);
258
259 if (isrv.status)
260 printk(KERN_ERR "SAL_CAL_FLUSH failed with %ld\n", isrv.status);
261
262 if (ia64_get_irr(IA64_TIMER_VECTOR)) {
263 vector = ia64_get_ivr();
264 ia64_eoi();
265 WARN_ON(vector != IA64_TIMER_VECTOR);
266 } else {
267 sal_cache_flush_drops_interrupts = 1;
268 printk(KERN_ERR "SAL: SAL_CACHE_FLUSH drops interrupts; "
269 "PAL_CACHE_FLUSH will be used instead\n");
270 ia64_eoi();
271 }
272
273 local_irq_restore(flags);
274 put_cpu();
275 }
276
277 s64
278 ia64_sal_cache_flush (u64 cache_type)
279 {
280 struct ia64_sal_retval isrv;
281
282 if (sal_cache_flush_drops_interrupts) {
283 unsigned long flags;
284 u64 progress;
285 s64 rc;
286
287 progress = 0;
288 local_irq_save(flags);
289 rc = ia64_pal_cache_flush(cache_type,
290 PAL_CACHE_FLUSH_INVALIDATE, &progress, NULL);
291 local_irq_restore(flags);
292 return rc;
293 }
294
295 SAL_CALL(isrv, SAL_CACHE_FLUSH, cache_type, 0, 0, 0, 0, 0, 0);
296 return isrv.status;
297 }
298 EXPORT_SYMBOL_GPL(ia64_sal_cache_flush);
299
300 void __init
301 ia64_sal_init (struct ia64_sal_systab *systab)
302 {
303 char *p;
304 int i;
305
306 if (!systab) {
307 printk(KERN_WARNING "Hmm, no SAL System Table.\n");
308 return;
309 }
310
311 if (strncmp(systab->signature, "SST_", 4) != 0)
312 printk(KERN_ERR "bad signature in system table!");
313
314 check_versions(systab);
315 #ifdef CONFIG_SMP
316 chk_nointroute_opt();
317 #endif
318
319
320 printk(KERN_INFO "SAL %x.%x: %.32s %.32s%sversion %x.%x\n",
321 SAL_MAJOR(sal_revision), SAL_MINOR(sal_revision),
322 systab->oem_id, systab->product_id,
323 systab->product_id[0] ? " " : "",
324 SAL_MAJOR(sal_version), SAL_MINOR(sal_version));
325
326 p = (char *) (systab + 1);
327 for (i = 0; i < systab->entry_count; i++) {
328
329
330
331
332 switch (*p) {
333 case SAL_DESC_ENTRY_POINT:
334 sal_desc_entry_point(p);
335 break;
336 case SAL_DESC_PLATFORM_FEATURE:
337 sal_desc_platform_feature(p);
338 break;
339 case SAL_DESC_PTC:
340 ia64_ptc_domain_info = (ia64_sal_desc_ptc_t *)p;
341 break;
342 case SAL_DESC_AP_WAKEUP:
343 sal_desc_ap_wakeup(p);
344 break;
345 }
346 p += SAL_DESC_SIZE(*p);
347 }
348
349 }
350
351 int
352 ia64_sal_oemcall(struct ia64_sal_retval *isrvp, u64 oemfunc, u64 arg1,
353 u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7)
354 {
355 if (oemfunc < IA64_SAL_OEMFUNC_MIN || oemfunc > IA64_SAL_OEMFUNC_MAX)
356 return -1;
357 SAL_CALL(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6, arg7);
358 return 0;
359 }
360 EXPORT_SYMBOL(ia64_sal_oemcall);
361
362 int
363 ia64_sal_oemcall_nolock(struct ia64_sal_retval *isrvp, u64 oemfunc, u64 arg1,
364 u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6,
365 u64 arg7)
366 {
367 if (oemfunc < IA64_SAL_OEMFUNC_MIN || oemfunc > IA64_SAL_OEMFUNC_MAX)
368 return -1;
369 SAL_CALL_NOLOCK(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6,
370 arg7);
371 return 0;
372 }
373 EXPORT_SYMBOL(ia64_sal_oemcall_nolock);
374
375 int
376 ia64_sal_oemcall_reentrant(struct ia64_sal_retval *isrvp, u64 oemfunc,
377 u64 arg1, u64 arg2, u64 arg3, u64 arg4, u64 arg5,
378 u64 arg6, u64 arg7)
379 {
380 if (oemfunc < IA64_SAL_OEMFUNC_MIN || oemfunc > IA64_SAL_OEMFUNC_MAX)
381 return -1;
382 SAL_CALL_REENTRANT(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6,
383 arg7);
384 return 0;
385 }
386 EXPORT_SYMBOL(ia64_sal_oemcall_reentrant);
387
388 long
389 ia64_sal_freq_base (unsigned long which, unsigned long *ticks_per_second,
390 unsigned long *drift_info)
391 {
392 struct ia64_sal_retval isrv;
393
394 SAL_CALL(isrv, SAL_FREQ_BASE, which, 0, 0, 0, 0, 0, 0);
395 *ticks_per_second = isrv.v0;
396 *drift_info = isrv.v1;
397 return isrv.status;
398 }
399 EXPORT_SYMBOL_GPL(ia64_sal_freq_base);