Commit | Line | Data |
---|---|---|
d979f179 | 1 | /* arch/sparc64/kernel/traps.c |
1da177e4 | 2 | * |
f88620b9 | 3 | * Copyright (C) 1995,1997,2008,2009,2012 David S. Miller (davem@davemloft.net) |
1da177e4 LT |
4 | * Copyright (C) 1997,1999,2000 Jakub Jelinek (jakub@redhat.com) |
5 | */ | |
6 | ||
7 | /* | |
8 | * I like traps on v9, :)))) | |
9 | */ | |
10 | ||
1da177e4 | 11 | #include <linux/module.h> |
a2c1e064 | 12 | #include <linux/sched.h> |
9843099f | 13 | #include <linux/linkage.h> |
1da177e4 | 14 | #include <linux/kernel.h> |
1da177e4 LT |
15 | #include <linux/signal.h> |
16 | #include <linux/smp.h> | |
1da177e4 LT |
17 | #include <linux/mm.h> |
18 | #include <linux/init.h> | |
1eeb66a1 | 19 | #include <linux/kdebug.h> |
667f0cee | 20 | #include <linux/ftrace.h> |
f88620b9 | 21 | #include <linux/reboot.h> |
5a0e3ad6 | 22 | #include <linux/gfp.h> |
1da177e4 | 23 | |
2f4dfe20 | 24 | #include <asm/smp.h> |
1da177e4 | 25 | #include <asm/delay.h> |
1da177e4 LT |
26 | #include <asm/ptrace.h> |
27 | #include <asm/oplib.h> | |
28 | #include <asm/page.h> | |
29 | #include <asm/pgtable.h> | |
30 | #include <asm/unistd.h> | |
31 | #include <asm/uaccess.h> | |
32 | #include <asm/fpumacro.h> | |
33 | #include <asm/lsu.h> | |
34 | #include <asm/dcu.h> | |
35 | #include <asm/estate.h> | |
36 | #include <asm/chafsr.h> | |
6c52a96e | 37 | #include <asm/sfafsr.h> |
1da177e4 LT |
38 | #include <asm/psrcompat.h> |
39 | #include <asm/processor.h> | |
40 | #include <asm/timer.h> | |
92704a1c | 41 | #include <asm/head.h> |
07f8e5f3 | 42 | #include <asm/prom.h> |
881d021a | 43 | #include <asm/memctrl.h> |
d550bbd4 | 44 | #include <asm/cacheflush.h> |
1da177e4 | 45 | |
99cd2201 | 46 | #include "entry.h" |
4f70f7a9 | 47 | #include "kstack.h" |
1da177e4 LT |
48 | |
49 | /* When an irrecoverable trap occurs at tl > 0, the trap entry | |
50 | * code logs the trap state registers at every level in the trap | |
51 | * stack. It is found at (pt_regs + sizeof(pt_regs)) and the layout | |
52 | * is as follows: | |
53 | */ | |
54 | struct tl1_traplog { | |
55 | struct { | |
56 | unsigned long tstate; | |
57 | unsigned long tpc; | |
58 | unsigned long tnpc; | |
59 | unsigned long tt; | |
60 | } trapstack[4]; | |
61 | unsigned long tl; | |
62 | }; | |
63 | ||
64 | static void dump_tl1_traplog(struct tl1_traplog *p) | |
65 | { | |
3d6395cb | 66 | int i, limit; |
1da177e4 | 67 | |
04d74758 DM |
68 | printk(KERN_EMERG "TRAPLOG: Error at trap level 0x%lx, " |
69 | "dumping track stack.\n", p->tl); | |
3d6395cb DM |
70 | |
71 | limit = (tlb_type == hypervisor) ? 2 : 4; | |
39334a4b | 72 | for (i = 0; i < limit; i++) { |
04d74758 | 73 | printk(KERN_EMERG |
1da177e4 LT |
74 | "TRAPLOG: Trap level %d TSTATE[%016lx] TPC[%016lx] " |
75 | "TNPC[%016lx] TT[%lx]\n", | |
76 | i + 1, | |
77 | p->trapstack[i].tstate, p->trapstack[i].tpc, | |
78 | p->trapstack[i].tnpc, p->trapstack[i].tt); | |
4fe3ebec | 79 | printk("TRAPLOG: TPC<%pS>\n", (void *) p->trapstack[i].tpc); |
1da177e4 LT |
80 | } |
81 | } | |
82 | ||
1da177e4 LT |
83 | void bad_trap(struct pt_regs *regs, long lvl) |
84 | { | |
85 | char buffer[32]; | |
86 | siginfo_t info; | |
87 | ||
88 | if (notify_die(DIE_TRAP, "bad trap", regs, | |
89 | 0, lvl, SIGTRAP) == NOTIFY_STOP) | |
90 | return; | |
91 | ||
92 | if (lvl < 0x100) { | |
93 | sprintf(buffer, "Bad hw trap %lx at tl0\n", lvl); | |
94 | die_if_kernel(buffer, regs); | |
95 | } | |
96 | ||
97 | lvl -= 0x100; | |
98 | if (regs->tstate & TSTATE_PRIV) { | |
99 | sprintf(buffer, "Kernel bad sw trap %lx", lvl); | |
100 | die_if_kernel(buffer, regs); | |
101 | } | |
102 | if (test_thread_flag(TIF_32BIT)) { | |
103 | regs->tpc &= 0xffffffff; | |
104 | regs->tnpc &= 0xffffffff; | |
105 | } | |
106 | info.si_signo = SIGILL; | |
107 | info.si_errno = 0; | |
108 | info.si_code = ILL_ILLTRP; | |
109 | info.si_addr = (void __user *)regs->tpc; | |
110 | info.si_trapno = lvl; | |
111 | force_sig_info(SIGILL, &info, current); | |
112 | } | |
113 | ||
114 | void bad_trap_tl1(struct pt_regs *regs, long lvl) | |
115 | { | |
116 | char buffer[32]; | |
117 | ||
118 | if (notify_die(DIE_TRAP_TL1, "bad trap tl1", regs, | |
119 | 0, lvl, SIGTRAP) == NOTIFY_STOP) | |
120 | return; | |
121 | ||
122 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
123 | ||
124 | sprintf (buffer, "Bad trap %lx at tl>0", lvl); | |
125 | die_if_kernel (buffer, regs); | |
126 | } | |
127 | ||
128 | #ifdef CONFIG_DEBUG_BUGVERBOSE | |
129 | void do_BUG(const char *file, int line) | |
130 | { | |
131 | bust_spinlocks(1); | |
132 | printk("kernel BUG at %s:%d!\n", file, line); | |
133 | } | |
917c3660 | 134 | EXPORT_SYMBOL(do_BUG); |
1da177e4 LT |
135 | #endif |
136 | ||
881d021a DM |
137 | static DEFINE_SPINLOCK(dimm_handler_lock); |
138 | static dimm_printer_t dimm_handler; | |
139 | ||
140 | static int sprintf_dimm(int synd_code, unsigned long paddr, char *buf, int buflen) | |
141 | { | |
142 | unsigned long flags; | |
143 | int ret = -ENODEV; | |
144 | ||
145 | spin_lock_irqsave(&dimm_handler_lock, flags); | |
146 | if (dimm_handler) { | |
147 | ret = dimm_handler(synd_code, paddr, buf, buflen); | |
148 | } else if (tlb_type == spitfire) { | |
149 | if (prom_getunumber(synd_code, paddr, buf, buflen) == -1) | |
150 | ret = -EINVAL; | |
151 | else | |
152 | ret = 0; | |
153 | } else | |
154 | ret = -ENODEV; | |
155 | spin_unlock_irqrestore(&dimm_handler_lock, flags); | |
156 | ||
157 | return ret; | |
158 | } | |
159 | ||
160 | int register_dimm_printer(dimm_printer_t func) | |
161 | { | |
162 | unsigned long flags; | |
163 | int ret = 0; | |
164 | ||
165 | spin_lock_irqsave(&dimm_handler_lock, flags); | |
166 | if (!dimm_handler) | |
167 | dimm_handler = func; | |
168 | else | |
169 | ret = -EEXIST; | |
170 | spin_unlock_irqrestore(&dimm_handler_lock, flags); | |
171 | ||
172 | return ret; | |
173 | } | |
41660e9a | 174 | EXPORT_SYMBOL_GPL(register_dimm_printer); |
881d021a DM |
175 | |
176 | void unregister_dimm_printer(dimm_printer_t func) | |
177 | { | |
178 | unsigned long flags; | |
179 | ||
180 | spin_lock_irqsave(&dimm_handler_lock, flags); | |
181 | if (dimm_handler == func) | |
182 | dimm_handler = NULL; | |
183 | spin_unlock_irqrestore(&dimm_handler_lock, flags); | |
184 | } | |
41660e9a | 185 | EXPORT_SYMBOL_GPL(unregister_dimm_printer); |
881d021a | 186 | |
6c52a96e | 187 | void spitfire_insn_access_exception(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar) |
1da177e4 LT |
188 | { |
189 | siginfo_t info; | |
190 | ||
191 | if (notify_die(DIE_TRAP, "instruction access exception", regs, | |
192 | 0, 0x8, SIGTRAP) == NOTIFY_STOP) | |
193 | return; | |
194 | ||
195 | if (regs->tstate & TSTATE_PRIV) { | |
6c52a96e DM |
196 | printk("spitfire_insn_access_exception: SFSR[%016lx] " |
197 | "SFAR[%016lx], going.\n", sfsr, sfar); | |
1da177e4 LT |
198 | die_if_kernel("Iax", regs); |
199 | } | |
200 | if (test_thread_flag(TIF_32BIT)) { | |
201 | regs->tpc &= 0xffffffff; | |
202 | regs->tnpc &= 0xffffffff; | |
203 | } | |
204 | info.si_signo = SIGSEGV; | |
205 | info.si_errno = 0; | |
206 | info.si_code = SEGV_MAPERR; | |
207 | info.si_addr = (void __user *)regs->tpc; | |
208 | info.si_trapno = 0; | |
209 | force_sig_info(SIGSEGV, &info, current); | |
210 | } | |
211 | ||
6c52a96e | 212 | void spitfire_insn_access_exception_tl1(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar) |
1da177e4 LT |
213 | { |
214 | if (notify_die(DIE_TRAP_TL1, "instruction access exception tl1", regs, | |
215 | 0, 0x8, SIGTRAP) == NOTIFY_STOP) | |
216 | return; | |
217 | ||
218 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
6c52a96e | 219 | spitfire_insn_access_exception(regs, sfsr, sfar); |
1da177e4 LT |
220 | } |
221 | ||
ed6b0b45 DM |
222 | void sun4v_insn_access_exception(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx) |
223 | { | |
224 | unsigned short type = (type_ctx >> 16); | |
225 | unsigned short ctx = (type_ctx & 0xffff); | |
226 | siginfo_t info; | |
227 | ||
228 | if (notify_die(DIE_TRAP, "instruction access exception", regs, | |
229 | 0, 0x8, SIGTRAP) == NOTIFY_STOP) | |
230 | return; | |
231 | ||
232 | if (regs->tstate & TSTATE_PRIV) { | |
233 | printk("sun4v_insn_access_exception: ADDR[%016lx] " | |
234 | "CTX[%04x] TYPE[%04x], going.\n", | |
235 | addr, ctx, type); | |
236 | die_if_kernel("Iax", regs); | |
237 | } | |
238 | ||
239 | if (test_thread_flag(TIF_32BIT)) { | |
240 | regs->tpc &= 0xffffffff; | |
241 | regs->tnpc &= 0xffffffff; | |
242 | } | |
243 | info.si_signo = SIGSEGV; | |
244 | info.si_errno = 0; | |
245 | info.si_code = SEGV_MAPERR; | |
246 | info.si_addr = (void __user *) addr; | |
247 | info.si_trapno = 0; | |
248 | force_sig_info(SIGSEGV, &info, current); | |
249 | } | |
250 | ||
251 | void sun4v_insn_access_exception_tl1(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx) | |
252 | { | |
253 | if (notify_die(DIE_TRAP_TL1, "instruction access exception tl1", regs, | |
254 | 0, 0x8, SIGTRAP) == NOTIFY_STOP) | |
255 | return; | |
256 | ||
257 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
258 | sun4v_insn_access_exception(regs, addr, type_ctx); | |
259 | } | |
260 | ||
6c52a96e | 261 | void spitfire_data_access_exception(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar) |
1da177e4 LT |
262 | { |
263 | siginfo_t info; | |
264 | ||
265 | if (notify_die(DIE_TRAP, "data access exception", regs, | |
266 | 0, 0x30, SIGTRAP) == NOTIFY_STOP) | |
267 | return; | |
268 | ||
269 | if (regs->tstate & TSTATE_PRIV) { | |
270 | /* Test if this comes from uaccess places. */ | |
8cf14af0 | 271 | const struct exception_table_entry *entry; |
1da177e4 | 272 | |
8cf14af0 DM |
273 | entry = search_exception_tables(regs->tpc); |
274 | if (entry) { | |
275 | /* Ouch, somebody is trying VM hole tricks on us... */ | |
1da177e4 LT |
276 | #ifdef DEBUG_EXCEPTIONS |
277 | printk("Exception: PC<%016lx> faddr<UNKNOWN>\n", regs->tpc); | |
8cf14af0 DM |
278 | printk("EX_TABLE: insn<%016lx> fixup<%016lx>\n", |
279 | regs->tpc, entry->fixup); | |
1da177e4 | 280 | #endif |
8cf14af0 | 281 | regs->tpc = entry->fixup; |
1da177e4 | 282 | regs->tnpc = regs->tpc + 4; |
1da177e4 LT |
283 | return; |
284 | } | |
285 | /* Shit... */ | |
6c52a96e DM |
286 | printk("spitfire_data_access_exception: SFSR[%016lx] " |
287 | "SFAR[%016lx], going.\n", sfsr, sfar); | |
1da177e4 LT |
288 | die_if_kernel("Dax", regs); |
289 | } | |
290 | ||
291 | info.si_signo = SIGSEGV; | |
292 | info.si_errno = 0; | |
293 | info.si_code = SEGV_MAPERR; | |
294 | info.si_addr = (void __user *)sfar; | |
295 | info.si_trapno = 0; | |
296 | force_sig_info(SIGSEGV, &info, current); | |
297 | } | |
298 | ||
6c52a96e | 299 | void spitfire_data_access_exception_tl1(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar) |
bde4e4ee DM |
300 | { |
301 | if (notify_die(DIE_TRAP_TL1, "data access exception tl1", regs, | |
302 | 0, 0x30, SIGTRAP) == NOTIFY_STOP) | |
303 | return; | |
304 | ||
305 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
6c52a96e | 306 | spitfire_data_access_exception(regs, sfsr, sfar); |
bde4e4ee DM |
307 | } |
308 | ||
ed6b0b45 DM |
309 | void sun4v_data_access_exception(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx) |
310 | { | |
311 | unsigned short type = (type_ctx >> 16); | |
312 | unsigned short ctx = (type_ctx & 0xffff); | |
313 | siginfo_t info; | |
314 | ||
315 | if (notify_die(DIE_TRAP, "data access exception", regs, | |
316 | 0, 0x8, SIGTRAP) == NOTIFY_STOP) | |
317 | return; | |
318 | ||
319 | if (regs->tstate & TSTATE_PRIV) { | |
fcd26f7a DM |
320 | /* Test if this comes from uaccess places. */ |
321 | const struct exception_table_entry *entry; | |
322 | ||
323 | entry = search_exception_tables(regs->tpc); | |
324 | if (entry) { | |
325 | /* Ouch, somebody is trying VM hole tricks on us... */ | |
326 | #ifdef DEBUG_EXCEPTIONS | |
327 | printk("Exception: PC<%016lx> faddr<UNKNOWN>\n", regs->tpc); | |
328 | printk("EX_TABLE: insn<%016lx> fixup<%016lx>\n", | |
329 | regs->tpc, entry->fixup); | |
330 | #endif | |
331 | regs->tpc = entry->fixup; | |
332 | regs->tnpc = regs->tpc + 4; | |
333 | return; | |
334 | } | |
ed6b0b45 DM |
335 | printk("sun4v_data_access_exception: ADDR[%016lx] " |
336 | "CTX[%04x] TYPE[%04x], going.\n", | |
337 | addr, ctx, type); | |
55555633 | 338 | die_if_kernel("Dax", regs); |
ed6b0b45 DM |
339 | } |
340 | ||
341 | if (test_thread_flag(TIF_32BIT)) { | |
342 | regs->tpc &= 0xffffffff; | |
343 | regs->tnpc &= 0xffffffff; | |
344 | } | |
345 | info.si_signo = SIGSEGV; | |
346 | info.si_errno = 0; | |
347 | info.si_code = SEGV_MAPERR; | |
348 | info.si_addr = (void __user *) addr; | |
349 | info.si_trapno = 0; | |
350 | force_sig_info(SIGSEGV, &info, current); | |
351 | } | |
352 | ||
353 | void sun4v_data_access_exception_tl1(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx) | |
354 | { | |
355 | if (notify_die(DIE_TRAP_TL1, "data access exception tl1", regs, | |
356 | 0, 0x8, SIGTRAP) == NOTIFY_STOP) | |
357 | return; | |
358 | ||
359 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
360 | sun4v_data_access_exception(regs, addr, type_ctx); | |
361 | } | |
362 | ||
1da177e4 | 363 | #ifdef CONFIG_PCI |
77d10d0e | 364 | #include "pci_impl.h" |
1da177e4 LT |
365 | #endif |
366 | ||
367 | /* When access exceptions happen, we must do this. */ | |
368 | static void spitfire_clean_and_reenable_l1_caches(void) | |
369 | { | |
370 | unsigned long va; | |
371 | ||
372 | if (tlb_type != spitfire) | |
373 | BUG(); | |
374 | ||
375 | /* Clean 'em. */ | |
376 | for (va = 0; va < (PAGE_SIZE << 1); va += 32) { | |
377 | spitfire_put_icache_tag(va, 0x0); | |
378 | spitfire_put_dcache_tag(va, 0x0); | |
379 | } | |
380 | ||
381 | /* Re-enable in LSU. */ | |
382 | __asm__ __volatile__("flush %%g6\n\t" | |
383 | "membar #Sync\n\t" | |
384 | "stxa %0, [%%g0] %1\n\t" | |
385 | "membar #Sync" | |
386 | : /* no outputs */ | |
387 | : "r" (LSU_CONTROL_IC | LSU_CONTROL_DC | | |
388 | LSU_CONTROL_IM | LSU_CONTROL_DM), | |
389 | "i" (ASI_LSU_CONTROL) | |
390 | : "memory"); | |
391 | } | |
392 | ||
6c52a96e | 393 | static void spitfire_enable_estate_errors(void) |
1da177e4 | 394 | { |
6c52a96e DM |
395 | __asm__ __volatile__("stxa %0, [%%g0] %1\n\t" |
396 | "membar #Sync" | |
397 | : /* no outputs */ | |
398 | : "r" (ESTATE_ERR_ALL), | |
399 | "i" (ASI_ESTATE_ERROR_EN)); | |
1da177e4 LT |
400 | } |
401 | ||
402 | static char ecc_syndrome_table[] = { | |
403 | 0x4c, 0x40, 0x41, 0x48, 0x42, 0x48, 0x48, 0x49, | |
404 | 0x43, 0x48, 0x48, 0x49, 0x48, 0x49, 0x49, 0x4a, | |
405 | 0x44, 0x48, 0x48, 0x20, 0x48, 0x39, 0x4b, 0x48, | |
406 | 0x48, 0x25, 0x31, 0x48, 0x28, 0x48, 0x48, 0x2c, | |
407 | 0x45, 0x48, 0x48, 0x21, 0x48, 0x3d, 0x04, 0x48, | |
408 | 0x48, 0x4b, 0x35, 0x48, 0x2d, 0x48, 0x48, 0x29, | |
409 | 0x48, 0x00, 0x01, 0x48, 0x0a, 0x48, 0x48, 0x4b, | |
410 | 0x0f, 0x48, 0x48, 0x4b, 0x48, 0x49, 0x49, 0x48, | |
411 | 0x46, 0x48, 0x48, 0x2a, 0x48, 0x3b, 0x27, 0x48, | |
412 | 0x48, 0x4b, 0x33, 0x48, 0x22, 0x48, 0x48, 0x2e, | |
413 | 0x48, 0x19, 0x1d, 0x48, 0x1b, 0x4a, 0x48, 0x4b, | |
414 | 0x1f, 0x48, 0x4a, 0x4b, 0x48, 0x4b, 0x4b, 0x48, | |
415 | 0x48, 0x4b, 0x24, 0x48, 0x07, 0x48, 0x48, 0x36, | |
416 | 0x4b, 0x48, 0x48, 0x3e, 0x48, 0x30, 0x38, 0x48, | |
417 | 0x49, 0x48, 0x48, 0x4b, 0x48, 0x4b, 0x16, 0x48, | |
418 | 0x48, 0x12, 0x4b, 0x48, 0x49, 0x48, 0x48, 0x4b, | |
419 | 0x47, 0x48, 0x48, 0x2f, 0x48, 0x3f, 0x4b, 0x48, | |
420 | 0x48, 0x06, 0x37, 0x48, 0x23, 0x48, 0x48, 0x2b, | |
421 | 0x48, 0x05, 0x4b, 0x48, 0x4b, 0x48, 0x48, 0x32, | |
422 | 0x26, 0x48, 0x48, 0x3a, 0x48, 0x34, 0x3c, 0x48, | |
423 | 0x48, 0x11, 0x15, 0x48, 0x13, 0x4a, 0x48, 0x4b, | |
424 | 0x17, 0x48, 0x4a, 0x4b, 0x48, 0x4b, 0x4b, 0x48, | |
425 | 0x49, 0x48, 0x48, 0x4b, 0x48, 0x4b, 0x1e, 0x48, | |
426 | 0x48, 0x1a, 0x4b, 0x48, 0x49, 0x48, 0x48, 0x4b, | |
427 | 0x48, 0x08, 0x0d, 0x48, 0x02, 0x48, 0x48, 0x49, | |
428 | 0x03, 0x48, 0x48, 0x49, 0x48, 0x4b, 0x4b, 0x48, | |
429 | 0x49, 0x48, 0x48, 0x49, 0x48, 0x4b, 0x10, 0x48, | |
430 | 0x48, 0x14, 0x4b, 0x48, 0x4b, 0x48, 0x48, 0x4b, | |
431 | 0x49, 0x48, 0x48, 0x49, 0x48, 0x4b, 0x18, 0x48, | |
432 | 0x48, 0x1c, 0x4b, 0x48, 0x4b, 0x48, 0x48, 0x4b, | |
433 | 0x4a, 0x0c, 0x09, 0x48, 0x0e, 0x48, 0x48, 0x4b, | |
434 | 0x0b, 0x48, 0x48, 0x4b, 0x48, 0x4b, 0x4b, 0x4a | |
435 | }; | |
436 | ||
1da177e4 LT |
437 | static char *syndrome_unknown = "<Unknown>"; |
438 | ||
6c52a96e | 439 | static void spitfire_log_udb_syndrome(unsigned long afar, unsigned long udbh, unsigned long udbl, unsigned long bit) |
1da177e4 | 440 | { |
6c52a96e DM |
441 | unsigned short scode; |
442 | char memmod_str[64], *p; | |
1da177e4 | 443 | |
6c52a96e DM |
444 | if (udbl & bit) { |
445 | scode = ecc_syndrome_table[udbl & 0xff]; | |
881d021a | 446 | if (sprintf_dimm(scode, afar, memmod_str, sizeof(memmod_str)) < 0) |
1da177e4 LT |
447 | p = syndrome_unknown; |
448 | else | |
449 | p = memmod_str; | |
450 | printk(KERN_WARNING "CPU[%d]: UDBL Syndrome[%x] " | |
451 | "Memory Module \"%s\"\n", | |
452 | smp_processor_id(), scode, p); | |
453 | } | |
454 | ||
6c52a96e DM |
455 | if (udbh & bit) { |
456 | scode = ecc_syndrome_table[udbh & 0xff]; | |
881d021a | 457 | if (sprintf_dimm(scode, afar, memmod_str, sizeof(memmod_str)) < 0) |
1da177e4 LT |
458 | p = syndrome_unknown; |
459 | else | |
460 | p = memmod_str; | |
461 | printk(KERN_WARNING "CPU[%d]: UDBH Syndrome[%x] " | |
462 | "Memory Module \"%s\"\n", | |
463 | smp_processor_id(), scode, p); | |
464 | } | |
6c52a96e DM |
465 | |
466 | } | |
467 | ||
468 | static void spitfire_cee_log(unsigned long afsr, unsigned long afar, unsigned long udbh, unsigned long udbl, int tl1, struct pt_regs *regs) | |
469 | { | |
470 | ||
471 | printk(KERN_WARNING "CPU[%d]: Correctable ECC Error " | |
472 | "AFSR[%lx] AFAR[%016lx] UDBL[%lx] UDBH[%lx] TL>1[%d]\n", | |
473 | smp_processor_id(), afsr, afar, udbl, udbh, tl1); | |
474 | ||
475 | spitfire_log_udb_syndrome(afar, udbh, udbl, UDBE_CE); | |
476 | ||
477 | /* We always log it, even if someone is listening for this | |
478 | * trap. | |
479 | */ | |
480 | notify_die(DIE_TRAP, "Correctable ECC Error", regs, | |
481 | 0, TRAP_TYPE_CEE, SIGTRAP); | |
482 | ||
483 | /* The Correctable ECC Error trap does not disable I/D caches. So | |
484 | * we only have to restore the ESTATE Error Enable register. | |
485 | */ | |
486 | spitfire_enable_estate_errors(); | |
487 | } | |
488 | ||
489 | static void spitfire_ue_log(unsigned long afsr, unsigned long afar, unsigned long udbh, unsigned long udbl, unsigned long tt, int tl1, struct pt_regs *regs) | |
490 | { | |
491 | siginfo_t info; | |
492 | ||
493 | printk(KERN_WARNING "CPU[%d]: Uncorrectable Error AFSR[%lx] " | |
494 | "AFAR[%lx] UDBL[%lx] UDBH[%ld] TT[%lx] TL>1[%d]\n", | |
495 | smp_processor_id(), afsr, afar, udbl, udbh, tt, tl1); | |
496 | ||
497 | /* XXX add more human friendly logging of the error status | |
498 | * XXX as is implemented for cheetah | |
499 | */ | |
500 | ||
501 | spitfire_log_udb_syndrome(afar, udbh, udbl, UDBE_UE); | |
502 | ||
503 | /* We always log it, even if someone is listening for this | |
504 | * trap. | |
505 | */ | |
506 | notify_die(DIE_TRAP, "Uncorrectable Error", regs, | |
507 | 0, tt, SIGTRAP); | |
508 | ||
509 | if (regs->tstate & TSTATE_PRIV) { | |
510 | if (tl1) | |
511 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
512 | die_if_kernel("UE", regs); | |
513 | } | |
514 | ||
515 | /* XXX need more intelligent processing here, such as is implemented | |
516 | * XXX for cheetah errors, in fact if the E-cache still holds the | |
517 | * XXX line with bad parity this will loop | |
518 | */ | |
519 | ||
520 | spitfire_clean_and_reenable_l1_caches(); | |
521 | spitfire_enable_estate_errors(); | |
522 | ||
523 | if (test_thread_flag(TIF_32BIT)) { | |
524 | regs->tpc &= 0xffffffff; | |
525 | regs->tnpc &= 0xffffffff; | |
526 | } | |
527 | info.si_signo = SIGBUS; | |
528 | info.si_errno = 0; | |
529 | info.si_code = BUS_OBJERR; | |
530 | info.si_addr = (void *)0; | |
531 | info.si_trapno = 0; | |
532 | force_sig_info(SIGBUS, &info, current); | |
533 | } | |
534 | ||
535 | void spitfire_access_error(struct pt_regs *regs, unsigned long status_encoded, unsigned long afar) | |
536 | { | |
537 | unsigned long afsr, tt, udbh, udbl; | |
538 | int tl1; | |
539 | ||
540 | afsr = (status_encoded & SFSTAT_AFSR_MASK) >> SFSTAT_AFSR_SHIFT; | |
541 | tt = (status_encoded & SFSTAT_TRAP_TYPE) >> SFSTAT_TRAP_TYPE_SHIFT; | |
542 | tl1 = (status_encoded & SFSTAT_TL_GT_ONE) ? 1 : 0; | |
543 | udbl = (status_encoded & SFSTAT_UDBL_MASK) >> SFSTAT_UDBL_SHIFT; | |
544 | udbh = (status_encoded & SFSTAT_UDBH_MASK) >> SFSTAT_UDBH_SHIFT; | |
545 | ||
546 | #ifdef CONFIG_PCI | |
547 | if (tt == TRAP_TYPE_DAE && | |
548 | pci_poke_in_progress && pci_poke_cpu == smp_processor_id()) { | |
549 | spitfire_clean_and_reenable_l1_caches(); | |
550 | spitfire_enable_estate_errors(); | |
551 | ||
552 | pci_poke_faulted = 1; | |
553 | regs->tnpc = regs->tpc + 4; | |
554 | return; | |
555 | } | |
556 | #endif | |
557 | ||
558 | if (afsr & SFAFSR_UE) | |
559 | spitfire_ue_log(afsr, afar, udbh, udbl, tt, tl1, regs); | |
560 | ||
561 | if (tt == TRAP_TYPE_CEE) { | |
562 | /* Handle the case where we took a CEE trap, but ACK'd | |
563 | * only the UE state in the UDB error registers. | |
564 | */ | |
565 | if (afsr & SFAFSR_UE) { | |
566 | if (udbh & UDBE_CE) { | |
567 | __asm__ __volatile__( | |
568 | "stxa %0, [%1] %2\n\t" | |
569 | "membar #Sync" | |
570 | : /* no outputs */ | |
571 | : "r" (udbh & UDBE_CE), | |
572 | "r" (0x0), "i" (ASI_UDB_ERROR_W)); | |
573 | } | |
574 | if (udbl & UDBE_CE) { | |
575 | __asm__ __volatile__( | |
576 | "stxa %0, [%1] %2\n\t" | |
577 | "membar #Sync" | |
578 | : /* no outputs */ | |
579 | : "r" (udbl & UDBE_CE), | |
580 | "r" (0x18), "i" (ASI_UDB_ERROR_W)); | |
581 | } | |
582 | } | |
583 | ||
584 | spitfire_cee_log(afsr, afar, udbh, udbl, tl1, regs); | |
585 | } | |
1da177e4 LT |
586 | } |
587 | ||
816242da DM |
588 | int cheetah_pcache_forced_on; |
589 | ||
590 | void cheetah_enable_pcache(void) | |
591 | { | |
592 | unsigned long dcr; | |
593 | ||
594 | printk("CHEETAH: Enabling P-Cache on cpu %d.\n", | |
595 | smp_processor_id()); | |
596 | ||
597 | __asm__ __volatile__("ldxa [%%g0] %1, %0" | |
598 | : "=r" (dcr) | |
599 | : "i" (ASI_DCU_CONTROL_REG)); | |
600 | dcr |= (DCU_PE | DCU_HPE | DCU_SPE | DCU_SL); | |
601 | __asm__ __volatile__("stxa %0, [%%g0] %1\n\t" | |
602 | "membar #Sync" | |
603 | : /* no outputs */ | |
604 | : "r" (dcr), "i" (ASI_DCU_CONTROL_REG)); | |
605 | } | |
606 | ||
1da177e4 LT |
607 | /* Cheetah error trap handling. */ |
608 | static unsigned long ecache_flush_physbase; | |
609 | static unsigned long ecache_flush_linesize; | |
610 | static unsigned long ecache_flush_size; | |
611 | ||
1da177e4 LT |
612 | /* This table is ordered in priority of errors and matches the |
613 | * AFAR overwrite policy as well. | |
614 | */ | |
615 | ||
616 | struct afsr_error_table { | |
617 | unsigned long mask; | |
618 | const char *name; | |
619 | }; | |
620 | ||
621 | static const char CHAFSR_PERR_msg[] = | |
622 | "System interface protocol error"; | |
623 | static const char CHAFSR_IERR_msg[] = | |
624 | "Internal processor error"; | |
625 | static const char CHAFSR_ISAP_msg[] = | |
b595076a | 626 | "System request parity error on incoming address"; |
1da177e4 LT |
627 | static const char CHAFSR_UCU_msg[] = |
628 | "Uncorrectable E-cache ECC error for ifetch/data"; | |
629 | static const char CHAFSR_UCC_msg[] = | |
630 | "SW Correctable E-cache ECC error for ifetch/data"; | |
631 | static const char CHAFSR_UE_msg[] = | |
632 | "Uncorrectable system bus data ECC error for read"; | |
633 | static const char CHAFSR_EDU_msg[] = | |
634 | "Uncorrectable E-cache ECC error for stmerge/blkld"; | |
635 | static const char CHAFSR_EMU_msg[] = | |
636 | "Uncorrectable system bus MTAG error"; | |
637 | static const char CHAFSR_WDU_msg[] = | |
638 | "Uncorrectable E-cache ECC error for writeback"; | |
639 | static const char CHAFSR_CPU_msg[] = | |
640 | "Uncorrectable ECC error for copyout"; | |
641 | static const char CHAFSR_CE_msg[] = | |
642 | "HW corrected system bus data ECC error for read"; | |
643 | static const char CHAFSR_EDC_msg[] = | |
644 | "HW corrected E-cache ECC error for stmerge/blkld"; | |
645 | static const char CHAFSR_EMC_msg[] = | |
646 | "HW corrected system bus MTAG ECC error"; | |
647 | static const char CHAFSR_WDC_msg[] = | |
648 | "HW corrected E-cache ECC error for writeback"; | |
649 | static const char CHAFSR_CPC_msg[] = | |
650 | "HW corrected ECC error for copyout"; | |
651 | static const char CHAFSR_TO_msg[] = | |
652 | "Unmapped error from system bus"; | |
653 | static const char CHAFSR_BERR_msg[] = | |
654 | "Bus error response from system bus"; | |
655 | static const char CHAFSR_IVC_msg[] = | |
656 | "HW corrected system bus data ECC error for ivec read"; | |
657 | static const char CHAFSR_IVU_msg[] = | |
658 | "Uncorrectable system bus data ECC error for ivec read"; | |
659 | static struct afsr_error_table __cheetah_error_table[] = { | |
660 | { CHAFSR_PERR, CHAFSR_PERR_msg }, | |
661 | { CHAFSR_IERR, CHAFSR_IERR_msg }, | |
662 | { CHAFSR_ISAP, CHAFSR_ISAP_msg }, | |
663 | { CHAFSR_UCU, CHAFSR_UCU_msg }, | |
664 | { CHAFSR_UCC, CHAFSR_UCC_msg }, | |
665 | { CHAFSR_UE, CHAFSR_UE_msg }, | |
666 | { CHAFSR_EDU, CHAFSR_EDU_msg }, | |
667 | { CHAFSR_EMU, CHAFSR_EMU_msg }, | |
668 | { CHAFSR_WDU, CHAFSR_WDU_msg }, | |
669 | { CHAFSR_CPU, CHAFSR_CPU_msg }, | |
670 | { CHAFSR_CE, CHAFSR_CE_msg }, | |
671 | { CHAFSR_EDC, CHAFSR_EDC_msg }, | |
672 | { CHAFSR_EMC, CHAFSR_EMC_msg }, | |
673 | { CHAFSR_WDC, CHAFSR_WDC_msg }, | |
674 | { CHAFSR_CPC, CHAFSR_CPC_msg }, | |
675 | { CHAFSR_TO, CHAFSR_TO_msg }, | |
676 | { CHAFSR_BERR, CHAFSR_BERR_msg }, | |
677 | /* These two do not update the AFAR. */ | |
678 | { CHAFSR_IVC, CHAFSR_IVC_msg }, | |
679 | { CHAFSR_IVU, CHAFSR_IVU_msg }, | |
680 | { 0, NULL }, | |
681 | }; | |
682 | static const char CHPAFSR_DTO_msg[] = | |
683 | "System bus unmapped error for prefetch/storequeue-read"; | |
684 | static const char CHPAFSR_DBERR_msg[] = | |
685 | "System bus error for prefetch/storequeue-read"; | |
686 | static const char CHPAFSR_THCE_msg[] = | |
687 | "Hardware corrected E-cache Tag ECC error"; | |
688 | static const char CHPAFSR_TSCE_msg[] = | |
689 | "SW handled correctable E-cache Tag ECC error"; | |
690 | static const char CHPAFSR_TUE_msg[] = | |
691 | "Uncorrectable E-cache Tag ECC error"; | |
692 | static const char CHPAFSR_DUE_msg[] = | |
693 | "System bus uncorrectable data ECC error due to prefetch/store-fill"; | |
694 | static struct afsr_error_table __cheetah_plus_error_table[] = { | |
695 | { CHAFSR_PERR, CHAFSR_PERR_msg }, | |
696 | { CHAFSR_IERR, CHAFSR_IERR_msg }, | |
697 | { CHAFSR_ISAP, CHAFSR_ISAP_msg }, | |
698 | { CHAFSR_UCU, CHAFSR_UCU_msg }, | |
699 | { CHAFSR_UCC, CHAFSR_UCC_msg }, | |
700 | { CHAFSR_UE, CHAFSR_UE_msg }, | |
701 | { CHAFSR_EDU, CHAFSR_EDU_msg }, | |
702 | { CHAFSR_EMU, CHAFSR_EMU_msg }, | |
703 | { CHAFSR_WDU, CHAFSR_WDU_msg }, | |
704 | { CHAFSR_CPU, CHAFSR_CPU_msg }, | |
705 | { CHAFSR_CE, CHAFSR_CE_msg }, | |
706 | { CHAFSR_EDC, CHAFSR_EDC_msg }, | |
707 | { CHAFSR_EMC, CHAFSR_EMC_msg }, | |
708 | { CHAFSR_WDC, CHAFSR_WDC_msg }, | |
709 | { CHAFSR_CPC, CHAFSR_CPC_msg }, | |
710 | { CHAFSR_TO, CHAFSR_TO_msg }, | |
711 | { CHAFSR_BERR, CHAFSR_BERR_msg }, | |
712 | { CHPAFSR_DTO, CHPAFSR_DTO_msg }, | |
713 | { CHPAFSR_DBERR, CHPAFSR_DBERR_msg }, | |
714 | { CHPAFSR_THCE, CHPAFSR_THCE_msg }, | |
715 | { CHPAFSR_TSCE, CHPAFSR_TSCE_msg }, | |
716 | { CHPAFSR_TUE, CHPAFSR_TUE_msg }, | |
717 | { CHPAFSR_DUE, CHPAFSR_DUE_msg }, | |
718 | /* These two do not update the AFAR. */ | |
719 | { CHAFSR_IVC, CHAFSR_IVC_msg }, | |
720 | { CHAFSR_IVU, CHAFSR_IVU_msg }, | |
721 | { 0, NULL }, | |
722 | }; | |
723 | static const char JPAFSR_JETO_msg[] = | |
724 | "System interface protocol error, hw timeout caused"; | |
725 | static const char JPAFSR_SCE_msg[] = | |
726 | "Parity error on system snoop results"; | |
727 | static const char JPAFSR_JEIC_msg[] = | |
728 | "System interface protocol error, illegal command detected"; | |
729 | static const char JPAFSR_JEIT_msg[] = | |
730 | "System interface protocol error, illegal ADTYPE detected"; | |
731 | static const char JPAFSR_OM_msg[] = | |
732 | "Out of range memory error has occurred"; | |
733 | static const char JPAFSR_ETP_msg[] = | |
734 | "Parity error on L2 cache tag SRAM"; | |
735 | static const char JPAFSR_UMS_msg[] = | |
736 | "Error due to unsupported store"; | |
737 | static const char JPAFSR_RUE_msg[] = | |
738 | "Uncorrectable ECC error from remote cache/memory"; | |
739 | static const char JPAFSR_RCE_msg[] = | |
740 | "Correctable ECC error from remote cache/memory"; | |
741 | static const char JPAFSR_BP_msg[] = | |
742 | "JBUS parity error on returned read data"; | |
743 | static const char JPAFSR_WBP_msg[] = | |
744 | "JBUS parity error on data for writeback or block store"; | |
745 | static const char JPAFSR_FRC_msg[] = | |
746 | "Foreign read to DRAM incurring correctable ECC error"; | |
747 | static const char JPAFSR_FRU_msg[] = | |
748 | "Foreign read to DRAM incurring uncorrectable ECC error"; | |
749 | static struct afsr_error_table __jalapeno_error_table[] = { | |
750 | { JPAFSR_JETO, JPAFSR_JETO_msg }, | |
751 | { JPAFSR_SCE, JPAFSR_SCE_msg }, | |
752 | { JPAFSR_JEIC, JPAFSR_JEIC_msg }, | |
753 | { JPAFSR_JEIT, JPAFSR_JEIT_msg }, | |
754 | { CHAFSR_PERR, CHAFSR_PERR_msg }, | |
755 | { CHAFSR_IERR, CHAFSR_IERR_msg }, | |
756 | { CHAFSR_ISAP, CHAFSR_ISAP_msg }, | |
757 | { CHAFSR_UCU, CHAFSR_UCU_msg }, | |
758 | { CHAFSR_UCC, CHAFSR_UCC_msg }, | |
759 | { CHAFSR_UE, CHAFSR_UE_msg }, | |
760 | { CHAFSR_EDU, CHAFSR_EDU_msg }, | |
761 | { JPAFSR_OM, JPAFSR_OM_msg }, | |
762 | { CHAFSR_WDU, CHAFSR_WDU_msg }, | |
763 | { CHAFSR_CPU, CHAFSR_CPU_msg }, | |
764 | { CHAFSR_CE, CHAFSR_CE_msg }, | |
765 | { CHAFSR_EDC, CHAFSR_EDC_msg }, | |
766 | { JPAFSR_ETP, JPAFSR_ETP_msg }, | |
767 | { CHAFSR_WDC, CHAFSR_WDC_msg }, | |
768 | { CHAFSR_CPC, CHAFSR_CPC_msg }, | |
769 | { CHAFSR_TO, CHAFSR_TO_msg }, | |
770 | { CHAFSR_BERR, CHAFSR_BERR_msg }, | |
771 | { JPAFSR_UMS, JPAFSR_UMS_msg }, | |
772 | { JPAFSR_RUE, JPAFSR_RUE_msg }, | |
773 | { JPAFSR_RCE, JPAFSR_RCE_msg }, | |
774 | { JPAFSR_BP, JPAFSR_BP_msg }, | |
775 | { JPAFSR_WBP, JPAFSR_WBP_msg }, | |
776 | { JPAFSR_FRC, JPAFSR_FRC_msg }, | |
777 | { JPAFSR_FRU, JPAFSR_FRU_msg }, | |
778 | /* These two do not update the AFAR. */ | |
779 | { CHAFSR_IVU, CHAFSR_IVU_msg }, | |
780 | { 0, NULL }, | |
781 | }; | |
782 | static struct afsr_error_table *cheetah_error_table; | |
783 | static unsigned long cheetah_afsr_errors; | |
784 | ||
1da177e4 LT |
785 | struct cheetah_err_info *cheetah_error_log; |
786 | ||
d979f179 | 787 | static inline struct cheetah_err_info *cheetah_get_error_log(unsigned long afsr) |
1da177e4 LT |
788 | { |
789 | struct cheetah_err_info *p; | |
790 | int cpu = smp_processor_id(); | |
791 | ||
792 | if (!cheetah_error_log) | |
793 | return NULL; | |
794 | ||
795 | p = cheetah_error_log + (cpu * 2); | |
796 | if ((afsr & CHAFSR_TL1) != 0UL) | |
797 | p++; | |
798 | ||
799 | return p; | |
800 | } | |
801 | ||
802 | extern unsigned int tl0_icpe[], tl1_icpe[]; | |
803 | extern unsigned int tl0_dcpe[], tl1_dcpe[]; | |
804 | extern unsigned int tl0_fecc[], tl1_fecc[]; | |
805 | extern unsigned int tl0_cee[], tl1_cee[]; | |
806 | extern unsigned int tl0_iae[], tl1_iae[]; | |
807 | extern unsigned int tl0_dae[], tl1_dae[]; | |
808 | extern unsigned int cheetah_plus_icpe_trap_vector[], cheetah_plus_icpe_trap_vector_tl1[]; | |
809 | extern unsigned int cheetah_plus_dcpe_trap_vector[], cheetah_plus_dcpe_trap_vector_tl1[]; | |
810 | extern unsigned int cheetah_fecc_trap_vector[], cheetah_fecc_trap_vector_tl1[]; | |
811 | extern unsigned int cheetah_cee_trap_vector[], cheetah_cee_trap_vector_tl1[]; | |
812 | extern unsigned int cheetah_deferred_trap_vector[], cheetah_deferred_trap_vector_tl1[]; | |
813 | ||
814 | void __init cheetah_ecache_flush_init(void) | |
815 | { | |
816 | unsigned long largest_size, smallest_linesize, order, ver; | |
5cbc3073 | 817 | int i, sz; |
1da177e4 LT |
818 | |
819 | /* Scan all cpu device tree nodes, note two values: | |
820 | * 1) largest E-cache size | |
821 | * 2) smallest E-cache line size | |
822 | */ | |
823 | largest_size = 0UL; | |
824 | smallest_linesize = ~0UL; | |
825 | ||
5cbc3073 | 826 | for (i = 0; i < NR_CPUS; i++) { |
1da177e4 LT |
827 | unsigned long val; |
828 | ||
5cbc3073 DM |
829 | val = cpu_data(i).ecache_size; |
830 | if (!val) | |
831 | continue; | |
832 | ||
1da177e4 LT |
833 | if (val > largest_size) |
834 | largest_size = val; | |
5cbc3073 DM |
835 | |
836 | val = cpu_data(i).ecache_line_size; | |
1da177e4 LT |
837 | if (val < smallest_linesize) |
838 | smallest_linesize = val; | |
5cbc3073 | 839 | |
1da177e4 LT |
840 | } |
841 | ||
842 | if (largest_size == 0UL || smallest_linesize == ~0UL) { | |
843 | prom_printf("cheetah_ecache_flush_init: Cannot probe cpu E-cache " | |
844 | "parameters.\n"); | |
845 | prom_halt(); | |
846 | } | |
847 | ||
848 | ecache_flush_size = (2 * largest_size); | |
849 | ecache_flush_linesize = smallest_linesize; | |
850 | ||
10147570 | 851 | ecache_flush_physbase = find_ecache_flush_span(ecache_flush_size); |
1da177e4 | 852 | |
10147570 | 853 | if (ecache_flush_physbase == ~0UL) { |
5da444aa | 854 | prom_printf("cheetah_ecache_flush_init: Cannot find %ld byte " |
10147570 DM |
855 | "contiguous physical memory.\n", |
856 | ecache_flush_size); | |
1da177e4 LT |
857 | prom_halt(); |
858 | } | |
859 | ||
860 | /* Now allocate error trap reporting scoreboard. */ | |
07f8e5f3 | 861 | sz = NR_CPUS * (2 * sizeof(struct cheetah_err_info)); |
1da177e4 | 862 | for (order = 0; order < MAX_ORDER; order++) { |
07f8e5f3 | 863 | if ((PAGE_SIZE << order) >= sz) |
1da177e4 LT |
864 | break; |
865 | } | |
866 | cheetah_error_log = (struct cheetah_err_info *) | |
867 | __get_free_pages(GFP_KERNEL, order); | |
868 | if (!cheetah_error_log) { | |
869 | prom_printf("cheetah_ecache_flush_init: Failed to allocate " | |
07f8e5f3 | 870 | "error logging scoreboard (%d bytes).\n", sz); |
1da177e4 LT |
871 | prom_halt(); |
872 | } | |
873 | memset(cheetah_error_log, 0, PAGE_SIZE << order); | |
874 | ||
875 | /* Mark all AFSRs as invalid so that the trap handler will | |
876 | * log new new information there. | |
877 | */ | |
878 | for (i = 0; i < 2 * NR_CPUS; i++) | |
879 | cheetah_error_log[i].afsr = CHAFSR_INVALID; | |
880 | ||
881 | __asm__ ("rdpr %%ver, %0" : "=r" (ver)); | |
92704a1c DM |
882 | if ((ver >> 32) == __JALAPENO_ID || |
883 | (ver >> 32) == __SERRANO_ID) { | |
1da177e4 LT |
884 | cheetah_error_table = &__jalapeno_error_table[0]; |
885 | cheetah_afsr_errors = JPAFSR_ERRORS; | |
886 | } else if ((ver >> 32) == 0x003e0015) { | |
887 | cheetah_error_table = &__cheetah_plus_error_table[0]; | |
888 | cheetah_afsr_errors = CHPAFSR_ERRORS; | |
889 | } else { | |
890 | cheetah_error_table = &__cheetah_error_table[0]; | |
891 | cheetah_afsr_errors = CHAFSR_ERRORS; | |
892 | } | |
893 | ||
894 | /* Now patch trap tables. */ | |
895 | memcpy(tl0_fecc, cheetah_fecc_trap_vector, (8 * 4)); | |
896 | memcpy(tl1_fecc, cheetah_fecc_trap_vector_tl1, (8 * 4)); | |
897 | memcpy(tl0_cee, cheetah_cee_trap_vector, (8 * 4)); | |
898 | memcpy(tl1_cee, cheetah_cee_trap_vector_tl1, (8 * 4)); | |
899 | memcpy(tl0_iae, cheetah_deferred_trap_vector, (8 * 4)); | |
900 | memcpy(tl1_iae, cheetah_deferred_trap_vector_tl1, (8 * 4)); | |
901 | memcpy(tl0_dae, cheetah_deferred_trap_vector, (8 * 4)); | |
902 | memcpy(tl1_dae, cheetah_deferred_trap_vector_tl1, (8 * 4)); | |
903 | if (tlb_type == cheetah_plus) { | |
904 | memcpy(tl0_dcpe, cheetah_plus_dcpe_trap_vector, (8 * 4)); | |
905 | memcpy(tl1_dcpe, cheetah_plus_dcpe_trap_vector_tl1, (8 * 4)); | |
906 | memcpy(tl0_icpe, cheetah_plus_icpe_trap_vector, (8 * 4)); | |
907 | memcpy(tl1_icpe, cheetah_plus_icpe_trap_vector_tl1, (8 * 4)); | |
908 | } | |
909 | flushi(PAGE_OFFSET); | |
910 | } | |
911 | ||
912 | static void cheetah_flush_ecache(void) | |
913 | { | |
914 | unsigned long flush_base = ecache_flush_physbase; | |
915 | unsigned long flush_linesize = ecache_flush_linesize; | |
916 | unsigned long flush_size = ecache_flush_size; | |
917 | ||
918 | __asm__ __volatile__("1: subcc %0, %4, %0\n\t" | |
919 | " bne,pt %%xcc, 1b\n\t" | |
920 | " ldxa [%2 + %0] %3, %%g0\n\t" | |
921 | : "=&r" (flush_size) | |
922 | : "0" (flush_size), "r" (flush_base), | |
923 | "i" (ASI_PHYS_USE_EC), "r" (flush_linesize)); | |
924 | } | |
925 | ||
926 | static void cheetah_flush_ecache_line(unsigned long physaddr) | |
927 | { | |
928 | unsigned long alias; | |
929 | ||
930 | physaddr &= ~(8UL - 1UL); | |
931 | physaddr = (ecache_flush_physbase + | |
932 | (physaddr & ((ecache_flush_size>>1UL) - 1UL))); | |
933 | alias = physaddr + (ecache_flush_size >> 1UL); | |
934 | __asm__ __volatile__("ldxa [%0] %2, %%g0\n\t" | |
935 | "ldxa [%1] %2, %%g0\n\t" | |
936 | "membar #Sync" | |
937 | : /* no outputs */ | |
938 | : "r" (physaddr), "r" (alias), | |
939 | "i" (ASI_PHYS_USE_EC)); | |
940 | } | |
941 | ||
942 | /* Unfortunately, the diagnostic access to the I-cache tags we need to | |
943 | * use to clear the thing interferes with I-cache coherency transactions. | |
944 | * | |
945 | * So we must only flush the I-cache when it is disabled. | |
946 | */ | |
947 | static void __cheetah_flush_icache(void) | |
948 | { | |
80dc0d6b DM |
949 | unsigned int icache_size, icache_line_size; |
950 | unsigned long addr; | |
951 | ||
952 | icache_size = local_cpu_data().icache_size; | |
953 | icache_line_size = local_cpu_data().icache_line_size; | |
1da177e4 LT |
954 | |
955 | /* Clear the valid bits in all the tags. */ | |
80dc0d6b | 956 | for (addr = 0; addr < icache_size; addr += icache_line_size) { |
1da177e4 LT |
957 | __asm__ __volatile__("stxa %%g0, [%0] %1\n\t" |
958 | "membar #Sync" | |
959 | : /* no outputs */ | |
80dc0d6b DM |
960 | : "r" (addr | (2 << 3)), |
961 | "i" (ASI_IC_TAG)); | |
1da177e4 LT |
962 | } |
963 | } | |
964 | ||
965 | static void cheetah_flush_icache(void) | |
966 | { | |
967 | unsigned long dcu_save; | |
968 | ||
969 | /* Save current DCU, disable I-cache. */ | |
970 | __asm__ __volatile__("ldxa [%%g0] %1, %0\n\t" | |
971 | "or %0, %2, %%g1\n\t" | |
972 | "stxa %%g1, [%%g0] %1\n\t" | |
973 | "membar #Sync" | |
974 | : "=r" (dcu_save) | |
975 | : "i" (ASI_DCU_CONTROL_REG), "i" (DCU_IC) | |
976 | : "g1"); | |
977 | ||
978 | __cheetah_flush_icache(); | |
979 | ||
980 | /* Restore DCU register */ | |
981 | __asm__ __volatile__("stxa %0, [%%g0] %1\n\t" | |
982 | "membar #Sync" | |
983 | : /* no outputs */ | |
984 | : "r" (dcu_save), "i" (ASI_DCU_CONTROL_REG)); | |
985 | } | |
986 | ||
987 | static void cheetah_flush_dcache(void) | |
988 | { | |
80dc0d6b DM |
989 | unsigned int dcache_size, dcache_line_size; |
990 | unsigned long addr; | |
991 | ||
992 | dcache_size = local_cpu_data().dcache_size; | |
993 | dcache_line_size = local_cpu_data().dcache_line_size; | |
1da177e4 | 994 | |
80dc0d6b | 995 | for (addr = 0; addr < dcache_size; addr += dcache_line_size) { |
1da177e4 LT |
996 | __asm__ __volatile__("stxa %%g0, [%0] %1\n\t" |
997 | "membar #Sync" | |
998 | : /* no outputs */ | |
80dc0d6b | 999 | : "r" (addr), "i" (ASI_DCACHE_TAG)); |
1da177e4 LT |
1000 | } |
1001 | } | |
1002 | ||
1003 | /* In order to make the even parity correct we must do two things. | |
1004 | * First, we clear DC_data_parity and set DC_utag to an appropriate value. | |
1005 | * Next, we clear out all 32-bytes of data for that line. Data of | |
1006 | * all-zero + tag parity value of zero == correct parity. | |
1007 | */ | |
1008 | static void cheetah_plus_zap_dcache_parity(void) | |
1009 | { | |
80dc0d6b DM |
1010 | unsigned int dcache_size, dcache_line_size; |
1011 | unsigned long addr; | |
1012 | ||
1013 | dcache_size = local_cpu_data().dcache_size; | |
1014 | dcache_line_size = local_cpu_data().dcache_line_size; | |
1da177e4 | 1015 | |
80dc0d6b DM |
1016 | for (addr = 0; addr < dcache_size; addr += dcache_line_size) { |
1017 | unsigned long tag = (addr >> 14); | |
1018 | unsigned long line; | |
1da177e4 LT |
1019 | |
1020 | __asm__ __volatile__("membar #Sync\n\t" | |
1021 | "stxa %0, [%1] %2\n\t" | |
1022 | "membar #Sync" | |
1023 | : /* no outputs */ | |
80dc0d6b | 1024 | : "r" (tag), "r" (addr), |
1da177e4 | 1025 | "i" (ASI_DCACHE_UTAG)); |
80dc0d6b | 1026 | for (line = addr; line < addr + dcache_line_size; line += 8) |
1da177e4 LT |
1027 | __asm__ __volatile__("membar #Sync\n\t" |
1028 | "stxa %%g0, [%0] %1\n\t" | |
1029 | "membar #Sync" | |
1030 | : /* no outputs */ | |
80dc0d6b DM |
1031 | : "r" (line), |
1032 | "i" (ASI_DCACHE_DATA)); | |
1da177e4 LT |
1033 | } |
1034 | } | |
1035 | ||
1036 | /* Conversion tables used to frob Cheetah AFSR syndrome values into | |
1037 | * something palatable to the memory controller driver get_unumber | |
1038 | * routine. | |
1039 | */ | |
1040 | #define MT0 137 | |
1041 | #define MT1 138 | |
1042 | #define MT2 139 | |
1043 | #define NONE 254 | |
1044 | #define MTC0 140 | |
1045 | #define MTC1 141 | |
1046 | #define MTC2 142 | |
1047 | #define MTC3 143 | |
1048 | #define C0 128 | |
1049 | #define C1 129 | |
1050 | #define C2 130 | |
1051 | #define C3 131 | |
1052 | #define C4 132 | |
1053 | #define C5 133 | |
1054 | #define C6 134 | |
1055 | #define C7 135 | |
1056 | #define C8 136 | |
1057 | #define M2 144 | |
1058 | #define M3 145 | |
1059 | #define M4 146 | |
1060 | #define M 147 | |
1061 | static unsigned char cheetah_ecc_syntab[] = { | |
1062 | /*00*/NONE, C0, C1, M2, C2, M2, M3, 47, C3, M2, M2, 53, M2, 41, 29, M, | |
1063 | /*01*/C4, M, M, 50, M2, 38, 25, M2, M2, 33, 24, M2, 11, M, M2, 16, | |
1064 | /*02*/C5, M, M, 46, M2, 37, 19, M2, M, 31, 32, M, 7, M2, M2, 10, | |
1065 | /*03*/M2, 40, 13, M2, 59, M, M2, 66, M, M2, M2, 0, M2, 67, 71, M, | |
1066 | /*04*/C6, M, M, 43, M, 36, 18, M, M2, 49, 15, M, 63, M2, M2, 6, | |
1067 | /*05*/M2, 44, 28, M2, M, M2, M2, 52, 68, M2, M2, 62, M2, M3, M3, M4, | |
1068 | /*06*/M2, 26, 106, M2, 64, M, M2, 2, 120, M, M2, M3, M, M3, M3, M4, | |
1069 | /*07*/116, M2, M2, M3, M2, M3, M, M4, M2, 58, 54, M2, M, M4, M4, M3, | |
1070 | /*08*/C7, M2, M, 42, M, 35, 17, M2, M, 45, 14, M2, 21, M2, M2, 5, | |
1071 | /*09*/M, 27, M, M, 99, M, M, 3, 114, M2, M2, 20, M2, M3, M3, M, | |
1072 | /*0a*/M2, 23, 113, M2, 112, M2, M, 51, 95, M, M2, M3, M2, M3, M3, M2, | |
1073 | /*0b*/103, M, M2, M3, M2, M3, M3, M4, M2, 48, M, M, 73, M2, M, M3, | |
1074 | /*0c*/M2, 22, 110, M2, 109, M2, M, 9, 108, M2, M, M3, M2, M3, M3, M, | |
1075 | /*0d*/102, M2, M, M, M2, M3, M3, M, M2, M3, M3, M2, M, M4, M, M3, | |
1076 | /*0e*/98, M, M2, M3, M2, M, M3, M4, M2, M3, M3, M4, M3, M, M, M, | |
1077 | /*0f*/M2, M3, M3, M, M3, M, M, M, 56, M4, M, M3, M4, M, M, M, | |
1078 | /*10*/C8, M, M2, 39, M, 34, 105, M2, M, 30, 104, M, 101, M, M, 4, | |
1079 | /*11*/M, M, 100, M, 83, M, M2, 12, 87, M, M, 57, M2, M, M3, M, | |
1080 | /*12*/M2, 97, 82, M2, 78, M2, M2, 1, 96, M, M, M, M, M, M3, M2, | |
1081 | /*13*/94, M, M2, M3, M2, M, M3, M, M2, M, 79, M, 69, M, M4, M, | |
1082 | /*14*/M2, 93, 92, M, 91, M, M2, 8, 90, M2, M2, M, M, M, M, M4, | |
1083 | /*15*/89, M, M, M3, M2, M3, M3, M, M, M, M3, M2, M3, M2, M, M3, | |
1084 | /*16*/86, M, M2, M3, M2, M, M3, M, M2, M, M3, M, M3, M, M, M3, | |
1085 | /*17*/M, M, M3, M2, M3, M2, M4, M, 60, M, M2, M3, M4, M, M, M2, | |
1086 | /*18*/M2, 88, 85, M2, 84, M, M2, 55, 81, M2, M2, M3, M2, M3, M3, M4, | |
1087 | /*19*/77, M, M, M, M2, M3, M, M, M2, M3, M3, M4, M3, M2, M, M, | |
1088 | /*1a*/74, M, M2, M3, M, M, M3, M, M, M, M3, M, M3, M, M4, M3, | |
1089 | /*1b*/M2, 70, 107, M4, 65, M2, M2, M, 127, M, M, M, M2, M3, M3, M, | |
1090 | /*1c*/80, M2, M2, 72, M, 119, 118, M, M2, 126, 76, M, 125, M, M4, M3, | |
1091 | /*1d*/M2, 115, 124, M, 75, M, M, M3, 61, M, M4, M, M4, M, M, M, | |
1092 | /*1e*/M, 123, 122, M4, 121, M4, M, M3, 117, M2, M2, M3, M4, M3, M, M, | |
1093 | /*1f*/111, M, M, M, M4, M3, M3, M, M, M, M3, M, M3, M2, M, M | |
1094 | }; | |
1095 | static unsigned char cheetah_mtag_syntab[] = { | |
1096 | NONE, MTC0, | |
1097 | MTC1, NONE, | |
1098 | MTC2, NONE, | |
1099 | NONE, MT0, | |
1100 | MTC3, NONE, | |
1101 | NONE, MT1, | |
1102 | NONE, MT2, | |
1103 | NONE, NONE | |
1104 | }; | |
1105 | ||
1106 | /* Return the highest priority error conditon mentioned. */ | |
d979f179 | 1107 | static inline unsigned long cheetah_get_hipri(unsigned long afsr) |
1da177e4 LT |
1108 | { |
1109 | unsigned long tmp = 0; | |
1110 | int i; | |
1111 | ||
1112 | for (i = 0; cheetah_error_table[i].mask; i++) { | |
1113 | if ((tmp = (afsr & cheetah_error_table[i].mask)) != 0UL) | |
1114 | return tmp; | |
1115 | } | |
1116 | return tmp; | |
1117 | } | |
1118 | ||
1119 | static const char *cheetah_get_string(unsigned long bit) | |
1120 | { | |
1121 | int i; | |
1122 | ||
1123 | for (i = 0; cheetah_error_table[i].mask; i++) { | |
1124 | if ((bit & cheetah_error_table[i].mask) != 0UL) | |
1125 | return cheetah_error_table[i].name; | |
1126 | } | |
1127 | return "???"; | |
1128 | } | |
1129 | ||
1da177e4 LT |
1130 | static void cheetah_log_errors(struct pt_regs *regs, struct cheetah_err_info *info, |
1131 | unsigned long afsr, unsigned long afar, int recoverable) | |
1132 | { | |
1133 | unsigned long hipri; | |
1134 | char unum[256]; | |
1135 | ||
1136 | printk("%s" "ERROR(%d): Cheetah error trap taken afsr[%016lx] afar[%016lx] TL1(%d)\n", | |
1137 | (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(), | |
1138 | afsr, afar, | |
1139 | (afsr & CHAFSR_TL1) ? 1 : 0); | |
955c054f | 1140 | printk("%s" "ERROR(%d): TPC[%lx] TNPC[%lx] O7[%lx] TSTATE[%lx]\n", |
1da177e4 | 1141 | (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(), |
955c054f | 1142 | regs->tpc, regs->tnpc, regs->u_regs[UREG_I7], regs->tstate); |
5af47db7 DM |
1143 | printk("%s" "ERROR(%d): ", |
1144 | (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id()); | |
4fe3ebec | 1145 | printk("TPC<%pS>\n", (void *) regs->tpc); |
1da177e4 LT |
1146 | printk("%s" "ERROR(%d): M_SYND(%lx), E_SYND(%lx)%s%s\n", |
1147 | (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(), | |
1148 | (afsr & CHAFSR_M_SYNDROME) >> CHAFSR_M_SYNDROME_SHIFT, | |
1149 | (afsr & CHAFSR_E_SYNDROME) >> CHAFSR_E_SYNDROME_SHIFT, | |
1150 | (afsr & CHAFSR_ME) ? ", Multiple Errors" : "", | |
1151 | (afsr & CHAFSR_PRIV) ? ", Privileged" : ""); | |
1152 | hipri = cheetah_get_hipri(afsr); | |
1153 | printk("%s" "ERROR(%d): Highest priority error (%016lx) \"%s\"\n", | |
1154 | (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(), | |
1155 | hipri, cheetah_get_string(hipri)); | |
1156 | ||
1157 | /* Try to get unumber if relevant. */ | |
1158 | #define ESYND_ERRORS (CHAFSR_IVC | CHAFSR_IVU | \ | |
1159 | CHAFSR_CPC | CHAFSR_CPU | \ | |
1160 | CHAFSR_UE | CHAFSR_CE | \ | |
1161 | CHAFSR_EDC | CHAFSR_EDU | \ | |
1162 | CHAFSR_UCC | CHAFSR_UCU | \ | |
1163 | CHAFSR_WDU | CHAFSR_WDC) | |
1164 | #define MSYND_ERRORS (CHAFSR_EMC | CHAFSR_EMU) | |
1165 | if (afsr & ESYND_ERRORS) { | |
1166 | int syndrome; | |
1167 | int ret; | |
1168 | ||
1169 | syndrome = (afsr & CHAFSR_E_SYNDROME) >> CHAFSR_E_SYNDROME_SHIFT; | |
1170 | syndrome = cheetah_ecc_syntab[syndrome]; | |
881d021a | 1171 | ret = sprintf_dimm(syndrome, afar, unum, sizeof(unum)); |
1da177e4 LT |
1172 | if (ret != -1) |
1173 | printk("%s" "ERROR(%d): AFAR E-syndrome [%s]\n", | |
1174 | (recoverable ? KERN_WARNING : KERN_CRIT), | |
1175 | smp_processor_id(), unum); | |
1176 | } else if (afsr & MSYND_ERRORS) { | |
1177 | int syndrome; | |
1178 | int ret; | |
1179 | ||
1180 | syndrome = (afsr & CHAFSR_M_SYNDROME) >> CHAFSR_M_SYNDROME_SHIFT; | |
1181 | syndrome = cheetah_mtag_syntab[syndrome]; | |
881d021a | 1182 | ret = sprintf_dimm(syndrome, afar, unum, sizeof(unum)); |
1da177e4 LT |
1183 | if (ret != -1) |
1184 | printk("%s" "ERROR(%d): AFAR M-syndrome [%s]\n", | |
1185 | (recoverable ? KERN_WARNING : KERN_CRIT), | |
1186 | smp_processor_id(), unum); | |
1187 | } | |
1188 | ||
1189 | /* Now dump the cache snapshots. */ | |
90181136 | 1190 | printk("%s" "ERROR(%d): D-cache idx[%x] tag[%016llx] utag[%016llx] stag[%016llx]\n", |
1da177e4 LT |
1191 | (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(), |
1192 | (int) info->dcache_index, | |
1193 | info->dcache_tag, | |
1194 | info->dcache_utag, | |
1195 | info->dcache_stag); | |
90181136 | 1196 | printk("%s" "ERROR(%d): D-cache data0[%016llx] data1[%016llx] data2[%016llx] data3[%016llx]\n", |
1da177e4 LT |
1197 | (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(), |
1198 | info->dcache_data[0], | |
1199 | info->dcache_data[1], | |
1200 | info->dcache_data[2], | |
1201 | info->dcache_data[3]); | |
90181136 SR |
1202 | printk("%s" "ERROR(%d): I-cache idx[%x] tag[%016llx] utag[%016llx] stag[%016llx] " |
1203 | "u[%016llx] l[%016llx]\n", | |
1da177e4 LT |
1204 | (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(), |
1205 | (int) info->icache_index, | |
1206 | info->icache_tag, | |
1207 | info->icache_utag, | |
1208 | info->icache_stag, | |
1209 | info->icache_upper, | |
1210 | info->icache_lower); | |
90181136 | 1211 | printk("%s" "ERROR(%d): I-cache INSN0[%016llx] INSN1[%016llx] INSN2[%016llx] INSN3[%016llx]\n", |
1da177e4 LT |
1212 | (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(), |
1213 | info->icache_data[0], | |
1214 | info->icache_data[1], | |
1215 | info->icache_data[2], | |
1216 | info->icache_data[3]); | |
90181136 | 1217 | printk("%s" "ERROR(%d): I-cache INSN4[%016llx] INSN5[%016llx] INSN6[%016llx] INSN7[%016llx]\n", |
1da177e4 LT |
1218 | (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(), |
1219 | info->icache_data[4], | |
1220 | info->icache_data[5], | |
1221 | info->icache_data[6], | |
1222 | info->icache_data[7]); | |
90181136 | 1223 | printk("%s" "ERROR(%d): E-cache idx[%x] tag[%016llx]\n", |
1da177e4 LT |
1224 | (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(), |
1225 | (int) info->ecache_index, info->ecache_tag); | |
90181136 | 1226 | printk("%s" "ERROR(%d): E-cache data0[%016llx] data1[%016llx] data2[%016llx] data3[%016llx]\n", |
1da177e4 LT |
1227 | (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(), |
1228 | info->ecache_data[0], | |
1229 | info->ecache_data[1], | |
1230 | info->ecache_data[2], | |
1231 | info->ecache_data[3]); | |
1232 | ||
1233 | afsr = (afsr & ~hipri) & cheetah_afsr_errors; | |
1234 | while (afsr != 0UL) { | |
1235 | unsigned long bit = cheetah_get_hipri(afsr); | |
1236 | ||
1237 | printk("%s" "ERROR: Multiple-error (%016lx) \"%s\"\n", | |
1238 | (recoverable ? KERN_WARNING : KERN_CRIT), | |
1239 | bit, cheetah_get_string(bit)); | |
1240 | ||
1241 | afsr &= ~bit; | |
1242 | } | |
1243 | ||
1244 | if (!recoverable) | |
1245 | printk(KERN_CRIT "ERROR: This condition is not recoverable.\n"); | |
1246 | } | |
1247 | ||
1248 | static int cheetah_recheck_errors(struct cheetah_err_info *logp) | |
1249 | { | |
1250 | unsigned long afsr, afar; | |
1251 | int ret = 0; | |
1252 | ||
1253 | __asm__ __volatile__("ldxa [%%g0] %1, %0\n\t" | |
1254 | : "=r" (afsr) | |
1255 | : "i" (ASI_AFSR)); | |
1256 | if ((afsr & cheetah_afsr_errors) != 0) { | |
1257 | if (logp != NULL) { | |
1258 | __asm__ __volatile__("ldxa [%%g0] %1, %0\n\t" | |
1259 | : "=r" (afar) | |
1260 | : "i" (ASI_AFAR)); | |
1261 | logp->afsr = afsr; | |
1262 | logp->afar = afar; | |
1263 | } | |
1264 | ret = 1; | |
1265 | } | |
1266 | __asm__ __volatile__("stxa %0, [%%g0] %1\n\t" | |
1267 | "membar #Sync\n\t" | |
1268 | : : "r" (afsr), "i" (ASI_AFSR)); | |
1269 | ||
1270 | return ret; | |
1271 | } | |
1272 | ||
1273 | void cheetah_fecc_handler(struct pt_regs *regs, unsigned long afsr, unsigned long afar) | |
1274 | { | |
1275 | struct cheetah_err_info local_snapshot, *p; | |
1276 | int recoverable; | |
1277 | ||
1278 | /* Flush E-cache */ | |
1279 | cheetah_flush_ecache(); | |
1280 | ||
1281 | p = cheetah_get_error_log(afsr); | |
1282 | if (!p) { | |
1283 | prom_printf("ERROR: Early Fast-ECC error afsr[%016lx] afar[%016lx]\n", | |
1284 | afsr, afar); | |
1285 | prom_printf("ERROR: CPU(%d) TPC[%016lx] TNPC[%016lx] TSTATE[%016lx]\n", | |
1286 | smp_processor_id(), regs->tpc, regs->tnpc, regs->tstate); | |
1287 | prom_halt(); | |
1288 | } | |
1289 | ||
1290 | /* Grab snapshot of logged error. */ | |
1291 | memcpy(&local_snapshot, p, sizeof(local_snapshot)); | |
1292 | ||
1293 | /* If the current trap snapshot does not match what the | |
1294 | * trap handler passed along into our args, big trouble. | |
1295 | * In such a case, mark the local copy as invalid. | |
1296 | * | |
1297 | * Else, it matches and we mark the afsr in the non-local | |
1298 | * copy as invalid so we may log new error traps there. | |
1299 | */ | |
1300 | if (p->afsr != afsr || p->afar != afar) | |
1301 | local_snapshot.afsr = CHAFSR_INVALID; | |
1302 | else | |
1303 | p->afsr = CHAFSR_INVALID; | |
1304 | ||
1305 | cheetah_flush_icache(); | |
1306 | cheetah_flush_dcache(); | |
1307 | ||
1308 | /* Re-enable I-cache/D-cache */ | |
1309 | __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t" | |
1310 | "or %%g1, %1, %%g1\n\t" | |
1311 | "stxa %%g1, [%%g0] %0\n\t" | |
1312 | "membar #Sync" | |
1313 | : /* no outputs */ | |
1314 | : "i" (ASI_DCU_CONTROL_REG), | |
1315 | "i" (DCU_DC | DCU_IC) | |
1316 | : "g1"); | |
1317 | ||
1318 | /* Re-enable error reporting */ | |
1319 | __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t" | |
1320 | "or %%g1, %1, %%g1\n\t" | |
1321 | "stxa %%g1, [%%g0] %0\n\t" | |
1322 | "membar #Sync" | |
1323 | : /* no outputs */ | |
1324 | : "i" (ASI_ESTATE_ERROR_EN), | |
1325 | "i" (ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN) | |
1326 | : "g1"); | |
1327 | ||
1328 | /* Decide if we can continue after handling this trap and | |
1329 | * logging the error. | |
1330 | */ | |
1331 | recoverable = 1; | |
1332 | if (afsr & (CHAFSR_PERR | CHAFSR_IERR | CHAFSR_ISAP)) | |
1333 | recoverable = 0; | |
1334 | ||
1335 | /* Re-check AFSR/AFAR. What we are looking for here is whether a new | |
1336 | * error was logged while we had error reporting traps disabled. | |
1337 | */ | |
1338 | if (cheetah_recheck_errors(&local_snapshot)) { | |
1339 | unsigned long new_afsr = local_snapshot.afsr; | |
1340 | ||
1341 | /* If we got a new asynchronous error, die... */ | |
1342 | if (new_afsr & (CHAFSR_EMU | CHAFSR_EDU | | |
1343 | CHAFSR_WDU | CHAFSR_CPU | | |
1344 | CHAFSR_IVU | CHAFSR_UE | | |
1345 | CHAFSR_BERR | CHAFSR_TO)) | |
1346 | recoverable = 0; | |
1347 | } | |
1348 | ||
1349 | /* Log errors. */ | |
1350 | cheetah_log_errors(regs, &local_snapshot, afsr, afar, recoverable); | |
1351 | ||
1352 | if (!recoverable) | |
1353 | panic("Irrecoverable Fast-ECC error trap.\n"); | |
1354 | ||
1355 | /* Flush E-cache to kick the error trap handlers out. */ | |
1356 | cheetah_flush_ecache(); | |
1357 | } | |
1358 | ||
1359 | /* Try to fix a correctable error by pushing the line out from | |
1360 | * the E-cache. Recheck error reporting registers to see if the | |
1361 | * problem is intermittent. | |
1362 | */ | |
1363 | static int cheetah_fix_ce(unsigned long physaddr) | |
1364 | { | |
1365 | unsigned long orig_estate; | |
1366 | unsigned long alias1, alias2; | |
1367 | int ret; | |
1368 | ||
1369 | /* Make sure correctable error traps are disabled. */ | |
1370 | __asm__ __volatile__("ldxa [%%g0] %2, %0\n\t" | |
1371 | "andn %0, %1, %%g1\n\t" | |
1372 | "stxa %%g1, [%%g0] %2\n\t" | |
1373 | "membar #Sync" | |
1374 | : "=&r" (orig_estate) | |
1375 | : "i" (ESTATE_ERROR_CEEN), | |
1376 | "i" (ASI_ESTATE_ERROR_EN) | |
1377 | : "g1"); | |
1378 | ||
1379 | /* We calculate alias addresses that will force the | |
1380 | * cache line in question out of the E-cache. Then | |
1381 | * we bring it back in with an atomic instruction so | |
1382 | * that we get it in some modified/exclusive state, | |
1383 | * then we displace it again to try and get proper ECC | |
1384 | * pushed back into the system. | |
1385 | */ | |
1386 | physaddr &= ~(8UL - 1UL); | |
1387 | alias1 = (ecache_flush_physbase + | |
1388 | (physaddr & ((ecache_flush_size >> 1) - 1))); | |
1389 | alias2 = alias1 + (ecache_flush_size >> 1); | |
1390 | __asm__ __volatile__("ldxa [%0] %3, %%g0\n\t" | |
1391 | "ldxa [%1] %3, %%g0\n\t" | |
1392 | "casxa [%2] %3, %%g0, %%g0\n\t" | |
1da177e4 LT |
1393 | "ldxa [%0] %3, %%g0\n\t" |
1394 | "ldxa [%1] %3, %%g0\n\t" | |
1395 | "membar #Sync" | |
1396 | : /* no outputs */ | |
1397 | : "r" (alias1), "r" (alias2), | |
1398 | "r" (physaddr), "i" (ASI_PHYS_USE_EC)); | |
1399 | ||
1400 | /* Did that trigger another error? */ | |
1401 | if (cheetah_recheck_errors(NULL)) { | |
1402 | /* Try one more time. */ | |
1403 | __asm__ __volatile__("ldxa [%0] %1, %%g0\n\t" | |
1404 | "membar #Sync" | |
1405 | : : "r" (physaddr), "i" (ASI_PHYS_USE_EC)); | |
1406 | if (cheetah_recheck_errors(NULL)) | |
1407 | ret = 2; | |
1408 | else | |
1409 | ret = 1; | |
1410 | } else { | |
1411 | /* No new error, intermittent problem. */ | |
1412 | ret = 0; | |
1413 | } | |
1414 | ||
1415 | /* Restore error enables. */ | |
1416 | __asm__ __volatile__("stxa %0, [%%g0] %1\n\t" | |
1417 | "membar #Sync" | |
1418 | : : "r" (orig_estate), "i" (ASI_ESTATE_ERROR_EN)); | |
1419 | ||
1420 | return ret; | |
1421 | } | |
1422 | ||
1423 | /* Return non-zero if PADDR is a valid physical memory address. */ | |
1424 | static int cheetah_check_main_memory(unsigned long paddr) | |
1425 | { | |
10147570 | 1426 | unsigned long vaddr = PAGE_OFFSET + paddr; |
1da177e4 | 1427 | |
13edad7a | 1428 | if (vaddr > (unsigned long) high_memory) |
ed3ffaf7 DM |
1429 | return 0; |
1430 | ||
10147570 | 1431 | return kern_addr_valid(vaddr); |
1da177e4 LT |
1432 | } |
1433 | ||
1434 | void cheetah_cee_handler(struct pt_regs *regs, unsigned long afsr, unsigned long afar) | |
1435 | { | |
1436 | struct cheetah_err_info local_snapshot, *p; | |
1437 | int recoverable, is_memory; | |
1438 | ||
1439 | p = cheetah_get_error_log(afsr); | |
1440 | if (!p) { | |
1441 | prom_printf("ERROR: Early CEE error afsr[%016lx] afar[%016lx]\n", | |
1442 | afsr, afar); | |
1443 | prom_printf("ERROR: CPU(%d) TPC[%016lx] TNPC[%016lx] TSTATE[%016lx]\n", | |
1444 | smp_processor_id(), regs->tpc, regs->tnpc, regs->tstate); | |
1445 | prom_halt(); | |
1446 | } | |
1447 | ||
1448 | /* Grab snapshot of logged error. */ | |
1449 | memcpy(&local_snapshot, p, sizeof(local_snapshot)); | |
1450 | ||
1451 | /* If the current trap snapshot does not match what the | |
1452 | * trap handler passed along into our args, big trouble. | |
1453 | * In such a case, mark the local copy as invalid. | |
1454 | * | |
1455 | * Else, it matches and we mark the afsr in the non-local | |
1456 | * copy as invalid so we may log new error traps there. | |
1457 | */ | |
1458 | if (p->afsr != afsr || p->afar != afar) | |
1459 | local_snapshot.afsr = CHAFSR_INVALID; | |
1460 | else | |
1461 | p->afsr = CHAFSR_INVALID; | |
1462 | ||
1463 | is_memory = cheetah_check_main_memory(afar); | |
1464 | ||
1465 | if (is_memory && (afsr & CHAFSR_CE) != 0UL) { | |
1466 | /* XXX Might want to log the results of this operation | |
1467 | * XXX somewhere... -DaveM | |
1468 | */ | |
1469 | cheetah_fix_ce(afar); | |
1470 | } | |
1471 | ||
1472 | { | |
1473 | int flush_all, flush_line; | |
1474 | ||
1475 | flush_all = flush_line = 0; | |
1476 | if ((afsr & CHAFSR_EDC) != 0UL) { | |
1477 | if ((afsr & cheetah_afsr_errors) == CHAFSR_EDC) | |
1478 | flush_line = 1; | |
1479 | else | |
1480 | flush_all = 1; | |
1481 | } else if ((afsr & CHAFSR_CPC) != 0UL) { | |
1482 | if ((afsr & cheetah_afsr_errors) == CHAFSR_CPC) | |
1483 | flush_line = 1; | |
1484 | else | |
1485 | flush_all = 1; | |
1486 | } | |
1487 | ||
1488 | /* Trap handler only disabled I-cache, flush it. */ | |
1489 | cheetah_flush_icache(); | |
1490 | ||
1491 | /* Re-enable I-cache */ | |
1492 | __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t" | |
1493 | "or %%g1, %1, %%g1\n\t" | |
1494 | "stxa %%g1, [%%g0] %0\n\t" | |
1495 | "membar #Sync" | |
1496 | : /* no outputs */ | |
1497 | : "i" (ASI_DCU_CONTROL_REG), | |
1498 | "i" (DCU_IC) | |
1499 | : "g1"); | |
1500 | ||
1501 | if (flush_all) | |
1502 | cheetah_flush_ecache(); | |
1503 | else if (flush_line) | |
1504 | cheetah_flush_ecache_line(afar); | |
1505 | } | |
1506 | ||
1507 | /* Re-enable error reporting */ | |
1508 | __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t" | |
1509 | "or %%g1, %1, %%g1\n\t" | |
1510 | "stxa %%g1, [%%g0] %0\n\t" | |
1511 | "membar #Sync" | |
1512 | : /* no outputs */ | |
1513 | : "i" (ASI_ESTATE_ERROR_EN), | |
1514 | "i" (ESTATE_ERROR_CEEN) | |
1515 | : "g1"); | |
1516 | ||
1517 | /* Decide if we can continue after handling this trap and | |
1518 | * logging the error. | |
1519 | */ | |
1520 | recoverable = 1; | |
1521 | if (afsr & (CHAFSR_PERR | CHAFSR_IERR | CHAFSR_ISAP)) | |
1522 | recoverable = 0; | |
1523 | ||
1524 | /* Re-check AFSR/AFAR */ | |
1525 | (void) cheetah_recheck_errors(&local_snapshot); | |
1526 | ||
1527 | /* Log errors. */ | |
1528 | cheetah_log_errors(regs, &local_snapshot, afsr, afar, recoverable); | |
1529 | ||
1530 | if (!recoverable) | |
1531 | panic("Irrecoverable Correctable-ECC error trap.\n"); | |
1532 | } | |
1533 | ||
1534 | void cheetah_deferred_handler(struct pt_regs *regs, unsigned long afsr, unsigned long afar) | |
1535 | { | |
1536 | struct cheetah_err_info local_snapshot, *p; | |
1537 | int recoverable, is_memory; | |
1538 | ||
1539 | #ifdef CONFIG_PCI | |
1540 | /* Check for the special PCI poke sequence. */ | |
1541 | if (pci_poke_in_progress && pci_poke_cpu == smp_processor_id()) { | |
1542 | cheetah_flush_icache(); | |
1543 | cheetah_flush_dcache(); | |
1544 | ||
1545 | /* Re-enable I-cache/D-cache */ | |
1546 | __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t" | |
1547 | "or %%g1, %1, %%g1\n\t" | |
1548 | "stxa %%g1, [%%g0] %0\n\t" | |
1549 | "membar #Sync" | |
1550 | : /* no outputs */ | |
1551 | : "i" (ASI_DCU_CONTROL_REG), | |
1552 | "i" (DCU_DC | DCU_IC) | |
1553 | : "g1"); | |
1554 | ||
1555 | /* Re-enable error reporting */ | |
1556 | __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t" | |
1557 | "or %%g1, %1, %%g1\n\t" | |
1558 | "stxa %%g1, [%%g0] %0\n\t" | |
1559 | "membar #Sync" | |
1560 | : /* no outputs */ | |
1561 | : "i" (ASI_ESTATE_ERROR_EN), | |
1562 | "i" (ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN) | |
1563 | : "g1"); | |
1564 | ||
1565 | (void) cheetah_recheck_errors(NULL); | |
1566 | ||
1567 | pci_poke_faulted = 1; | |
1568 | regs->tpc += 4; | |
1569 | regs->tnpc = regs->tpc + 4; | |
1570 | return; | |
1571 | } | |
1572 | #endif | |
1573 | ||
1574 | p = cheetah_get_error_log(afsr); | |
1575 | if (!p) { | |
1576 | prom_printf("ERROR: Early deferred error afsr[%016lx] afar[%016lx]\n", | |
1577 | afsr, afar); | |
1578 | prom_printf("ERROR: CPU(%d) TPC[%016lx] TNPC[%016lx] TSTATE[%016lx]\n", | |
1579 | smp_processor_id(), regs->tpc, regs->tnpc, regs->tstate); | |
1580 | prom_halt(); | |
1581 | } | |
1582 | ||
1583 | /* Grab snapshot of logged error. */ | |
1584 | memcpy(&local_snapshot, p, sizeof(local_snapshot)); | |
1585 | ||
1586 | /* If the current trap snapshot does not match what the | |
1587 | * trap handler passed along into our args, big trouble. | |
1588 | * In such a case, mark the local copy as invalid. | |
1589 | * | |
1590 | * Else, it matches and we mark the afsr in the non-local | |
1591 | * copy as invalid so we may log new error traps there. | |
1592 | */ | |
1593 | if (p->afsr != afsr || p->afar != afar) | |
1594 | local_snapshot.afsr = CHAFSR_INVALID; | |
1595 | else | |
1596 | p->afsr = CHAFSR_INVALID; | |
1597 | ||
1598 | is_memory = cheetah_check_main_memory(afar); | |
1599 | ||
1600 | { | |
1601 | int flush_all, flush_line; | |
1602 | ||
1603 | flush_all = flush_line = 0; | |
1604 | if ((afsr & CHAFSR_EDU) != 0UL) { | |
1605 | if ((afsr & cheetah_afsr_errors) == CHAFSR_EDU) | |
1606 | flush_line = 1; | |
1607 | else | |
1608 | flush_all = 1; | |
1609 | } else if ((afsr & CHAFSR_BERR) != 0UL) { | |
1610 | if ((afsr & cheetah_afsr_errors) == CHAFSR_BERR) | |
1611 | flush_line = 1; | |
1612 | else | |
1613 | flush_all = 1; | |
1614 | } | |
1615 | ||
1616 | cheetah_flush_icache(); | |
1617 | cheetah_flush_dcache(); | |
1618 | ||
1619 | /* Re-enable I/D caches */ | |
1620 | __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t" | |
1621 | "or %%g1, %1, %%g1\n\t" | |
1622 | "stxa %%g1, [%%g0] %0\n\t" | |
1623 | "membar #Sync" | |
1624 | : /* no outputs */ | |
1625 | : "i" (ASI_DCU_CONTROL_REG), | |
1626 | "i" (DCU_IC | DCU_DC) | |
1627 | : "g1"); | |
1628 | ||
1629 | if (flush_all) | |
1630 | cheetah_flush_ecache(); | |
1631 | else if (flush_line) | |
1632 | cheetah_flush_ecache_line(afar); | |
1633 | } | |
1634 | ||
1635 | /* Re-enable error reporting */ | |
1636 | __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t" | |
1637 | "or %%g1, %1, %%g1\n\t" | |
1638 | "stxa %%g1, [%%g0] %0\n\t" | |
1639 | "membar #Sync" | |
1640 | : /* no outputs */ | |
1641 | : "i" (ASI_ESTATE_ERROR_EN), | |
1642 | "i" (ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN) | |
1643 | : "g1"); | |
1644 | ||
1645 | /* Decide if we can continue after handling this trap and | |
1646 | * logging the error. | |
1647 | */ | |
1648 | recoverable = 1; | |
1649 | if (afsr & (CHAFSR_PERR | CHAFSR_IERR | CHAFSR_ISAP)) | |
1650 | recoverable = 0; | |
1651 | ||
1652 | /* Re-check AFSR/AFAR. What we are looking for here is whether a new | |
1653 | * error was logged while we had error reporting traps disabled. | |
1654 | */ | |
1655 | if (cheetah_recheck_errors(&local_snapshot)) { | |
1656 | unsigned long new_afsr = local_snapshot.afsr; | |
1657 | ||
1658 | /* If we got a new asynchronous error, die... */ | |
1659 | if (new_afsr & (CHAFSR_EMU | CHAFSR_EDU | | |
1660 | CHAFSR_WDU | CHAFSR_CPU | | |
1661 | CHAFSR_IVU | CHAFSR_UE | | |
1662 | CHAFSR_BERR | CHAFSR_TO)) | |
1663 | recoverable = 0; | |
1664 | } | |
1665 | ||
1666 | /* Log errors. */ | |
1667 | cheetah_log_errors(regs, &local_snapshot, afsr, afar, recoverable); | |
1668 | ||
1669 | /* "Recoverable" here means we try to yank the page from ever | |
1670 | * being newly used again. This depends upon a few things: | |
1671 | * 1) Must be main memory, and AFAR must be valid. | |
1672 | * 2) If we trapped from user, OK. | |
1673 | * 3) Else, if we trapped from kernel we must find exception | |
1674 | * table entry (ie. we have to have been accessing user | |
1675 | * space). | |
1676 | * | |
1677 | * If AFAR is not in main memory, or we trapped from kernel | |
1678 | * and cannot find an exception table entry, it is unacceptable | |
1679 | * to try and continue. | |
1680 | */ | |
1681 | if (recoverable && is_memory) { | |
1682 | if ((regs->tstate & TSTATE_PRIV) == 0UL) { | |
1683 | /* OK, usermode access. */ | |
1684 | recoverable = 1; | |
1685 | } else { | |
8cf14af0 | 1686 | const struct exception_table_entry *entry; |
1da177e4 | 1687 | |
8cf14af0 DM |
1688 | entry = search_exception_tables(regs->tpc); |
1689 | if (entry) { | |
1da177e4 LT |
1690 | /* OK, kernel access to userspace. */ |
1691 | recoverable = 1; | |
1692 | ||
1693 | } else { | |
1694 | /* BAD, privileged state is corrupted. */ | |
1695 | recoverable = 0; | |
1696 | } | |
1697 | ||
1698 | if (recoverable) { | |
1699 | if (pfn_valid(afar >> PAGE_SHIFT)) | |
1700 | get_page(pfn_to_page(afar >> PAGE_SHIFT)); | |
1701 | else | |
1702 | recoverable = 0; | |
1703 | ||
1704 | /* Only perform fixup if we still have a | |
1705 | * recoverable condition. | |
1706 | */ | |
1707 | if (recoverable) { | |
8cf14af0 | 1708 | regs->tpc = entry->fixup; |
1da177e4 | 1709 | regs->tnpc = regs->tpc + 4; |
1da177e4 LT |
1710 | } |
1711 | } | |
1712 | } | |
1713 | } else { | |
1714 | recoverable = 0; | |
1715 | } | |
1716 | ||
1717 | if (!recoverable) | |
1718 | panic("Irrecoverable deferred error trap.\n"); | |
1719 | } | |
1720 | ||
1721 | /* Handle a D/I cache parity error trap. TYPE is encoded as: | |
1722 | * | |
1723 | * Bit0: 0=dcache,1=icache | |
1724 | * Bit1: 0=recoverable,1=unrecoverable | |
1725 | * | |
1726 | * The hardware has disabled both the I-cache and D-cache in | |
1727 | * the %dcr register. | |
1728 | */ | |
1729 | void cheetah_plus_parity_error(int type, struct pt_regs *regs) | |
1730 | { | |
1731 | if (type & 0x1) | |
1732 | __cheetah_flush_icache(); | |
1733 | else | |
1734 | cheetah_plus_zap_dcache_parity(); | |
1735 | cheetah_flush_dcache(); | |
1736 | ||
1737 | /* Re-enable I-cache/D-cache */ | |
1738 | __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t" | |
1739 | "or %%g1, %1, %%g1\n\t" | |
1740 | "stxa %%g1, [%%g0] %0\n\t" | |
1741 | "membar #Sync" | |
1742 | : /* no outputs */ | |
1743 | : "i" (ASI_DCU_CONTROL_REG), | |
1744 | "i" (DCU_DC | DCU_IC) | |
1745 | : "g1"); | |
1746 | ||
1747 | if (type & 0x2) { | |
1748 | printk(KERN_EMERG "CPU[%d]: Cheetah+ %c-cache parity error at TPC[%016lx]\n", | |
1749 | smp_processor_id(), | |
1750 | (type & 0x1) ? 'I' : 'D', | |
1751 | regs->tpc); | |
4fe3ebec | 1752 | printk(KERN_EMERG "TPC<%pS>\n", (void *) regs->tpc); |
1da177e4 LT |
1753 | panic("Irrecoverable Cheetah+ parity error."); |
1754 | } | |
1755 | ||
1756 | printk(KERN_WARNING "CPU[%d]: Cheetah+ %c-cache parity error at TPC[%016lx]\n", | |
1757 | smp_processor_id(), | |
1758 | (type & 0x1) ? 'I' : 'D', | |
1759 | regs->tpc); | |
4fe3ebec | 1760 | printk(KERN_WARNING "TPC<%pS>\n", (void *) regs->tpc); |
1da177e4 LT |
1761 | } |
1762 | ||
5b0c0572 | 1763 | struct sun4v_error_entry { |
f88620b9 DM |
1764 | /* Unique error handle */ |
1765 | /*0x00*/u64 err_handle; | |
5b0c0572 | 1766 | |
f88620b9 DM |
1767 | /* %stick value at the time of the error */ |
1768 | /*0x08*/u64 err_stick; | |
1769 | ||
1770 | /*0x10*/u8 reserved_1[3]; | |
1771 | ||
1772 | /* Error type */ | |
1773 | /*0x13*/u8 err_type; | |
5b0c0572 DM |
1774 | #define SUN4V_ERR_TYPE_UNDEFINED 0 |
1775 | #define SUN4V_ERR_TYPE_UNCORRECTED_RES 1 | |
1776 | #define SUN4V_ERR_TYPE_PRECISE_NONRES 2 | |
1777 | #define SUN4V_ERR_TYPE_DEFERRED_NONRES 3 | |
f88620b9 DM |
1778 | #define SUN4V_ERR_TYPE_SHUTDOWN_RQST 4 |
1779 | #define SUN4V_ERR_TYPE_DUMP_CORE 5 | |
1780 | #define SUN4V_ERR_TYPE_SP_STATE_CHANGE 6 | |
1781 | #define SUN4V_ERR_TYPE_NUM 7 | |
5b0c0572 | 1782 | |
f88620b9 DM |
1783 | /* Error attributes */ |
1784 | /*0x14*/u32 err_attrs; | |
5b0c0572 DM |
1785 | #define SUN4V_ERR_ATTRS_PROCESSOR 0x00000001 |
1786 | #define SUN4V_ERR_ATTRS_MEMORY 0x00000002 | |
1787 | #define SUN4V_ERR_ATTRS_PIO 0x00000004 | |
1788 | #define SUN4V_ERR_ATTRS_INT_REGISTERS 0x00000008 | |
1789 | #define SUN4V_ERR_ATTRS_FPU_REGISTERS 0x00000010 | |
f88620b9 DM |
1790 | #define SUN4V_ERR_ATTRS_SHUTDOWN_RQST 0x00000020 |
1791 | #define SUN4V_ERR_ATTRS_ASR 0x00000040 | |
1792 | #define SUN4V_ERR_ATTRS_ASI 0x00000080 | |
1793 | #define SUN4V_ERR_ATTRS_PRIV_REG 0x00000100 | |
1794 | #define SUN4V_ERR_ATTRS_SPSTATE_MSK 0x00000600 | |
1795 | #define SUN4V_ERR_ATTRS_SPSTATE_SHFT 9 | |
1796 | #define SUN4V_ERR_ATTRS_MODE_MSK 0x03000000 | |
1797 | #define SUN4V_ERR_ATTRS_MODE_SHFT 24 | |
5b0c0572 DM |
1798 | #define SUN4V_ERR_ATTRS_RES_QUEUE_FULL 0x80000000 |
1799 | ||
f88620b9 DM |
1800 | #define SUN4V_ERR_SPSTATE_FAULTED 0 |
1801 | #define SUN4V_ERR_SPSTATE_AVAILABLE 1 | |
1802 | #define SUN4V_ERR_SPSTATE_NOT_PRESENT 2 | |
1803 | ||
1804 | #define SUN4V_ERR_MODE_USER 1 | |
1805 | #define SUN4V_ERR_MODE_PRIV 2 | |
1806 | ||
1807 | /* Real address of the memory region or PIO transaction */ | |
1808 | /*0x18*/u64 err_raddr; | |
1809 | ||
1810 | /* Size of the operation triggering the error, in bytes */ | |
1811 | /*0x20*/u32 err_size; | |
1812 | ||
1813 | /* ID of the CPU */ | |
1814 | /*0x24*/u16 err_cpu; | |
1815 | ||
1816 | /* Grace periof for shutdown, in seconds */ | |
1817 | /*0x26*/u16 err_secs; | |
1818 | ||
1819 | /* Value of the %asi register */ | |
1820 | /*0x28*/u8 err_asi; | |
1821 | ||
1822 | /*0x29*/u8 reserved_2; | |
1823 | ||
1824 | /* Value of the ASR register number */ | |
1825 | /*0x2a*/u16 err_asr; | |
1826 | #define SUN4V_ERR_ASR_VALID 0x8000 | |
1827 | ||
1828 | /*0x2c*/u32 reserved_3; | |
1829 | /*0x30*/u64 reserved_4; | |
1830 | /*0x38*/u64 reserved_5; | |
5b0c0572 DM |
1831 | }; |
1832 | ||
1833 | static atomic_t sun4v_resum_oflow_cnt = ATOMIC_INIT(0); | |
1834 | static atomic_t sun4v_nonresum_oflow_cnt = ATOMIC_INIT(0); | |
1835 | ||
f88620b9 | 1836 | static const char *sun4v_err_type_to_str(u8 type) |
5b0c0572 | 1837 | { |
f88620b9 DM |
1838 | static const char *types[SUN4V_ERR_TYPE_NUM] = { |
1839 | "undefined", | |
1840 | "uncorrected resumable", | |
1841 | "precise nonresumable", | |
1842 | "deferred nonresumable", | |
1843 | "shutdown request", | |
1844 | "dump core", | |
1845 | "SP state change", | |
1846 | }; | |
1847 | ||
1848 | if (type < SUN4V_ERR_TYPE_NUM) | |
1849 | return types[type]; | |
1850 | ||
1851 | return "unknown"; | |
1852 | } | |
1853 | ||
1854 | static void sun4v_emit_err_attr_strings(u32 attrs) | |
1855 | { | |
1856 | static const char *attr_names[] = { | |
1857 | "processor", | |
1858 | "memory", | |
1859 | "PIO", | |
1860 | "int-registers", | |
1861 | "fpu-registers", | |
1862 | "shutdown-request", | |
1863 | "ASR", | |
1864 | "ASI", | |
1865 | "priv-reg", | |
1866 | }; | |
1867 | static const char *sp_states[] = { | |
1868 | "sp-faulted", | |
1869 | "sp-available", | |
1870 | "sp-not-present", | |
1871 | "sp-state-reserved", | |
1872 | }; | |
1873 | static const char *modes[] = { | |
1874 | "mode-reserved0", | |
1875 | "user", | |
1876 | "priv", | |
1877 | "mode-reserved1", | |
1878 | }; | |
1879 | u32 sp_state, mode; | |
1880 | int i; | |
1881 | ||
1882 | for (i = 0; i < ARRAY_SIZE(attr_names); i++) { | |
1883 | if (attrs & (1U << i)) { | |
1884 | const char *s = attr_names[i]; | |
1885 | ||
1886 | pr_cont("%s ", s); | |
1887 | } | |
6cb79b3f | 1888 | } |
f88620b9 DM |
1889 | |
1890 | sp_state = ((attrs & SUN4V_ERR_ATTRS_SPSTATE_MSK) >> | |
1891 | SUN4V_ERR_ATTRS_SPSTATE_SHFT); | |
1892 | pr_cont("%s ", sp_states[sp_state]); | |
1893 | ||
1894 | mode = ((attrs & SUN4V_ERR_ATTRS_MODE_MSK) >> | |
1895 | SUN4V_ERR_ATTRS_MODE_SHFT); | |
1896 | pr_cont("%s ", modes[mode]); | |
1897 | ||
1898 | if (attrs & SUN4V_ERR_ATTRS_RES_QUEUE_FULL) | |
1899 | pr_cont("res-queue-full "); | |
5b0c0572 DM |
1900 | } |
1901 | ||
f88620b9 DM |
1902 | /* When the report contains a real-address of "-1" it means that the |
1903 | * hardware did not provide the address. So we compute the effective | |
1904 | * address of the load or store instruction at regs->tpc and report | |
1905 | * that. Usually when this happens it's a PIO and in such a case we | |
1906 | * are using physical addresses with bypass ASIs anyways, so what we | |
1907 | * report here is exactly what we want. | |
1908 | */ | |
1909 | static void sun4v_report_real_raddr(const char *pfx, struct pt_regs *regs) | |
5b0c0572 | 1910 | { |
f88620b9 DM |
1911 | unsigned int insn; |
1912 | u64 addr; | |
1913 | ||
1914 | if (!(regs->tstate & TSTATE_PRIV)) | |
1915 | return; | |
1916 | ||
1917 | insn = *(unsigned int *) regs->tpc; | |
1918 | ||
1919 | addr = compute_effective_address(regs, insn, 0); | |
1920 | ||
1921 | printk("%s: insn effective address [0x%016llx]\n", | |
1922 | pfx, addr); | |
1923 | } | |
1924 | ||
1925 | static void sun4v_log_error(struct pt_regs *regs, struct sun4v_error_entry *ent, | |
1926 | int cpu, const char *pfx, atomic_t *ocnt) | |
1927 | { | |
1928 | u64 *raw_ptr = (u64 *) ent; | |
1929 | u32 attrs; | |
5b0c0572 DM |
1930 | int cnt; |
1931 | ||
1932 | printk("%s: Reporting on cpu %d\n", pfx, cpu); | |
f88620b9 DM |
1933 | printk("%s: TPC [0x%016lx] <%pS>\n", |
1934 | pfx, regs->tpc, (void *) regs->tpc); | |
1935 | ||
1936 | printk("%s: RAW [%016llx:%016llx:%016llx:%016llx\n", | |
1937 | pfx, raw_ptr[0], raw_ptr[1], raw_ptr[2], raw_ptr[3]); | |
1938 | printk("%s: %016llx:%016llx:%016llx:%016llx]\n", | |
1939 | pfx, raw_ptr[4], raw_ptr[5], raw_ptr[6], raw_ptr[7]); | |
1940 | ||
1941 | printk("%s: handle [0x%016llx] stick [0x%016llx]\n", | |
1942 | pfx, ent->err_handle, ent->err_stick); | |
1943 | ||
1944 | printk("%s: type [%s]\n", pfx, sun4v_err_type_to_str(ent->err_type)); | |
1945 | ||
1946 | attrs = ent->err_attrs; | |
1947 | printk("%s: attrs [0x%08x] < ", pfx, attrs); | |
1948 | sun4v_emit_err_attr_strings(attrs); | |
1949 | pr_cont(">\n"); | |
1950 | ||
1951 | /* Various fields in the error report are only valid if | |
1952 | * certain attribute bits are set. | |
1953 | */ | |
1954 | if (attrs & (SUN4V_ERR_ATTRS_MEMORY | | |
1955 | SUN4V_ERR_ATTRS_PIO | | |
1956 | SUN4V_ERR_ATTRS_ASI)) { | |
1957 | printk("%s: raddr [0x%016llx]\n", pfx, ent->err_raddr); | |
1958 | ||
1959 | if (ent->err_raddr == ~(u64)0) | |
1960 | sun4v_report_real_raddr(pfx, regs); | |
1961 | } | |
1962 | ||
1963 | if (attrs & (SUN4V_ERR_ATTRS_MEMORY | SUN4V_ERR_ATTRS_ASI)) | |
1964 | printk("%s: size [0x%x]\n", pfx, ent->err_size); | |
1965 | ||
1966 | if (attrs & (SUN4V_ERR_ATTRS_PROCESSOR | | |
1967 | SUN4V_ERR_ATTRS_INT_REGISTERS | | |
1968 | SUN4V_ERR_ATTRS_FPU_REGISTERS | | |
1969 | SUN4V_ERR_ATTRS_PRIV_REG)) | |
1970 | printk("%s: cpu[%u]\n", pfx, ent->err_cpu); | |
1971 | ||
1972 | if (attrs & SUN4V_ERR_ATTRS_ASI) | |
1973 | printk("%s: asi [0x%02x]\n", pfx, ent->err_asi); | |
1974 | ||
1975 | if ((attrs & (SUN4V_ERR_ATTRS_INT_REGISTERS | | |
1976 | SUN4V_ERR_ATTRS_FPU_REGISTERS | | |
1977 | SUN4V_ERR_ATTRS_PRIV_REG)) && | |
1978 | (ent->err_asr & SUN4V_ERR_ASR_VALID) != 0) | |
1979 | printk("%s: reg [0x%04x]\n", | |
1980 | pfx, ent->err_asr & ~SUN4V_ERR_ASR_VALID); | |
5b0c0572 | 1981 | |
dbf3e950 | 1982 | show_regs(regs); |
5224e6cc | 1983 | |
5b0c0572 DM |
1984 | if ((cnt = atomic_read(ocnt)) != 0) { |
1985 | atomic_set(ocnt, 0); | |
1986 | wmb(); | |
1987 | printk("%s: Queue overflowed %d times.\n", | |
1988 | pfx, cnt); | |
1989 | } | |
1990 | } | |
1991 | ||
b4f4372f | 1992 | /* We run with %pil set to PIL_NORMAL_MAX and PSTATE_IE enabled in %pstate. |
5b0c0572 DM |
1993 | * Log the event and clear the first word of the entry. |
1994 | */ | |
1995 | void sun4v_resum_error(struct pt_regs *regs, unsigned long offset) | |
1996 | { | |
1997 | struct sun4v_error_entry *ent, local_copy; | |
1998 | struct trap_per_cpu *tb; | |
1999 | unsigned long paddr; | |
2000 | int cpu; | |
2001 | ||
2002 | cpu = get_cpu(); | |
2003 | ||
2004 | tb = &trap_block[cpu]; | |
2005 | paddr = tb->resum_kernel_buf_pa + offset; | |
2006 | ent = __va(paddr); | |
2007 | ||
2008 | memcpy(&local_copy, ent, sizeof(struct sun4v_error_entry)); | |
2009 | ||
2010 | /* We have a local copy now, so release the entry. */ | |
2011 | ent->err_handle = 0; | |
2012 | wmb(); | |
2013 | ||
2014 | put_cpu(); | |
2015 | ||
f88620b9 DM |
2016 | if (local_copy.err_type == SUN4V_ERR_TYPE_SHUTDOWN_RQST) { |
2017 | /* We should really take the seconds field of | |
2018 | * the error report and use it for the shutdown | |
2019 | * invocation, but for now do the same thing we | |
2020 | * do for a DS shutdown request. | |
a2c1e064 | 2021 | */ |
f88620b9 DM |
2022 | pr_info("Shutdown request, %u seconds...\n", |
2023 | local_copy.err_secs); | |
2024 | orderly_poweroff(true); | |
a2c1e064 DM |
2025 | return; |
2026 | } | |
2027 | ||
5224e6cc | 2028 | sun4v_log_error(regs, &local_copy, cpu, |
5b0c0572 DM |
2029 | KERN_ERR "RESUMABLE ERROR", |
2030 | &sun4v_resum_oflow_cnt); | |
2031 | } | |
2032 | ||
2033 | /* If we try to printk() we'll probably make matters worse, by trying | |
2034 | * to retake locks this cpu already holds or causing more errors. So | |
2035 | * just bump a counter, and we'll report these counter bumps above. | |
2036 | */ | |
2037 | void sun4v_resum_overflow(struct pt_regs *regs) | |
2038 | { | |
2039 | atomic_inc(&sun4v_resum_oflow_cnt); | |
2040 | } | |
2041 | ||
b4f4372f | 2042 | /* We run with %pil set to PIL_NORMAL_MAX and PSTATE_IE enabled in %pstate. |
5b0c0572 DM |
2043 | * Log the event, clear the first word of the entry, and die. |
2044 | */ | |
2045 | void sun4v_nonresum_error(struct pt_regs *regs, unsigned long offset) | |
2046 | { | |
2047 | struct sun4v_error_entry *ent, local_copy; | |
2048 | struct trap_per_cpu *tb; | |
2049 | unsigned long paddr; | |
2050 | int cpu; | |
2051 | ||
2052 | cpu = get_cpu(); | |
2053 | ||
2054 | tb = &trap_block[cpu]; | |
2055 | paddr = tb->nonresum_kernel_buf_pa + offset; | |
2056 | ent = __va(paddr); | |
2057 | ||
2058 | memcpy(&local_copy, ent, sizeof(struct sun4v_error_entry)); | |
2059 | ||
2060 | /* We have a local copy now, so release the entry. */ | |
2061 | ent->err_handle = 0; | |
2062 | wmb(); | |
2063 | ||
2064 | put_cpu(); | |
2065 | ||
2066 | #ifdef CONFIG_PCI | |
2067 | /* Check for the special PCI poke sequence. */ | |
2068 | if (pci_poke_in_progress && pci_poke_cpu == cpu) { | |
2069 | pci_poke_faulted = 1; | |
2070 | regs->tpc += 4; | |
2071 | regs->tnpc = regs->tpc + 4; | |
2072 | return; | |
2073 | } | |
2074 | #endif | |
2075 | ||
5224e6cc | 2076 | sun4v_log_error(regs, &local_copy, cpu, |
5b0c0572 DM |
2077 | KERN_EMERG "NON-RESUMABLE ERROR", |
2078 | &sun4v_nonresum_oflow_cnt); | |
2079 | ||
2080 | panic("Non-resumable error."); | |
2081 | } | |
2082 | ||
2083 | /* If we try to printk() we'll probably make matters worse, by trying | |
2084 | * to retake locks this cpu already holds or causing more errors. So | |
2085 | * just bump a counter, and we'll report these counter bumps above. | |
2086 | */ | |
2087 | void sun4v_nonresum_overflow(struct pt_regs *regs) | |
2088 | { | |
2089 | /* XXX Actually even this can make not that much sense. Perhaps | |
2090 | * XXX we should just pull the plug and panic directly from here? | |
2091 | */ | |
2092 | atomic_inc(&sun4v_nonresum_oflow_cnt); | |
2093 | } | |
2094 | ||
6c8927c9 DM |
2095 | unsigned long sun4v_err_itlb_vaddr; |
2096 | unsigned long sun4v_err_itlb_ctx; | |
2097 | unsigned long sun4v_err_itlb_pte; | |
2098 | unsigned long sun4v_err_itlb_error; | |
2099 | ||
2100 | void sun4v_itlb_error_report(struct pt_regs *regs, int tl) | |
2101 | { | |
2102 | if (tl > 1) | |
2103 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
2104 | ||
04d74758 DM |
2105 | printk(KERN_EMERG "SUN4V-ITLB: Error at TPC[%lx], tl %d\n", |
2106 | regs->tpc, tl); | |
4fe3ebec | 2107 | printk(KERN_EMERG "SUN4V-ITLB: TPC<%pS>\n", (void *) regs->tpc); |
6320bceb | 2108 | printk(KERN_EMERG "SUN4V-ITLB: O7[%lx]\n", regs->u_regs[UREG_I7]); |
4fe3ebec DM |
2109 | printk(KERN_EMERG "SUN4V-ITLB: O7<%pS>\n", |
2110 | (void *) regs->u_regs[UREG_I7]); | |
04d74758 DM |
2111 | printk(KERN_EMERG "SUN4V-ITLB: vaddr[%lx] ctx[%lx] " |
2112 | "pte[%lx] error[%lx]\n", | |
6c8927c9 DM |
2113 | sun4v_err_itlb_vaddr, sun4v_err_itlb_ctx, |
2114 | sun4v_err_itlb_pte, sun4v_err_itlb_error); | |
04d74758 | 2115 | |
6c8927c9 DM |
2116 | prom_halt(); |
2117 | } | |
2118 | ||
2119 | unsigned long sun4v_err_dtlb_vaddr; | |
2120 | unsigned long sun4v_err_dtlb_ctx; | |
2121 | unsigned long sun4v_err_dtlb_pte; | |
2122 | unsigned long sun4v_err_dtlb_error; | |
2123 | ||
2124 | void sun4v_dtlb_error_report(struct pt_regs *regs, int tl) | |
2125 | { | |
2126 | if (tl > 1) | |
2127 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
2128 | ||
04d74758 DM |
2129 | printk(KERN_EMERG "SUN4V-DTLB: Error at TPC[%lx], tl %d\n", |
2130 | regs->tpc, tl); | |
4fe3ebec | 2131 | printk(KERN_EMERG "SUN4V-DTLB: TPC<%pS>\n", (void *) regs->tpc); |
6320bceb | 2132 | printk(KERN_EMERG "SUN4V-DTLB: O7[%lx]\n", regs->u_regs[UREG_I7]); |
4fe3ebec DM |
2133 | printk(KERN_EMERG "SUN4V-DTLB: O7<%pS>\n", |
2134 | (void *) regs->u_regs[UREG_I7]); | |
04d74758 DM |
2135 | printk(KERN_EMERG "SUN4V-DTLB: vaddr[%lx] ctx[%lx] " |
2136 | "pte[%lx] error[%lx]\n", | |
6c8927c9 DM |
2137 | sun4v_err_dtlb_vaddr, sun4v_err_dtlb_ctx, |
2138 | sun4v_err_dtlb_pte, sun4v_err_dtlb_error); | |
04d74758 | 2139 | |
6c8927c9 DM |
2140 | prom_halt(); |
2141 | } | |
2142 | ||
2a3a5f5d DM |
2143 | void hypervisor_tlbop_error(unsigned long err, unsigned long op) |
2144 | { | |
2145 | printk(KERN_CRIT "SUN4V: TLB hv call error %lu for op %lu\n", | |
2146 | err, op); | |
2147 | } | |
2148 | ||
2149 | void hypervisor_tlbop_error_xcall(unsigned long err, unsigned long op) | |
2150 | { | |
2151 | printk(KERN_CRIT "SUN4V: XCALL TLB hv call error %lu for op %lu\n", | |
2152 | err, op); | |
2153 | } | |
2154 | ||
1da177e4 LT |
2155 | void do_fpe_common(struct pt_regs *regs) |
2156 | { | |
2157 | if (regs->tstate & TSTATE_PRIV) { | |
2158 | regs->tpc = regs->tnpc; | |
2159 | regs->tnpc += 4; | |
2160 | } else { | |
2161 | unsigned long fsr = current_thread_info()->xfsr[0]; | |
2162 | siginfo_t info; | |
2163 | ||
2164 | if (test_thread_flag(TIF_32BIT)) { | |
2165 | regs->tpc &= 0xffffffff; | |
2166 | regs->tnpc &= 0xffffffff; | |
2167 | } | |
2168 | info.si_signo = SIGFPE; | |
2169 | info.si_errno = 0; | |
2170 | info.si_addr = (void __user *)regs->tpc; | |
2171 | info.si_trapno = 0; | |
2172 | info.si_code = __SI_FAULT; | |
2173 | if ((fsr & 0x1c000) == (1 << 14)) { | |
2174 | if (fsr & 0x10) | |
2175 | info.si_code = FPE_FLTINV; | |
2176 | else if (fsr & 0x08) | |
2177 | info.si_code = FPE_FLTOVF; | |
2178 | else if (fsr & 0x04) | |
2179 | info.si_code = FPE_FLTUND; | |
2180 | else if (fsr & 0x02) | |
2181 | info.si_code = FPE_FLTDIV; | |
2182 | else if (fsr & 0x01) | |
2183 | info.si_code = FPE_FLTRES; | |
2184 | } | |
2185 | force_sig_info(SIGFPE, &info, current); | |
2186 | } | |
2187 | } | |
2188 | ||
2189 | void do_fpieee(struct pt_regs *regs) | |
2190 | { | |
2191 | if (notify_die(DIE_TRAP, "fpu exception ieee", regs, | |
2192 | 0, 0x24, SIGFPE) == NOTIFY_STOP) | |
2193 | return; | |
2194 | ||
2195 | do_fpe_common(regs); | |
2196 | } | |
2197 | ||
456d3d42 | 2198 | extern int do_mathemu(struct pt_regs *, struct fpustate *, bool); |
1da177e4 LT |
2199 | |
2200 | void do_fpother(struct pt_regs *regs) | |
2201 | { | |
2202 | struct fpustate *f = FPUSTATE; | |
2203 | int ret = 0; | |
2204 | ||
2205 | if (notify_die(DIE_TRAP, "fpu exception other", regs, | |
2206 | 0, 0x25, SIGFPE) == NOTIFY_STOP) | |
2207 | return; | |
2208 | ||
2209 | switch ((current_thread_info()->xfsr[0] & 0x1c000)) { | |
2210 | case (2 << 14): /* unfinished_FPop */ | |
2211 | case (3 << 14): /* unimplemented_FPop */ | |
456d3d42 | 2212 | ret = do_mathemu(regs, f, false); |
1da177e4 LT |
2213 | break; |
2214 | } | |
2215 | if (ret) | |
2216 | return; | |
2217 | do_fpe_common(regs); | |
2218 | } | |
2219 | ||
2220 | void do_tof(struct pt_regs *regs) | |
2221 | { | |
2222 | siginfo_t info; | |
2223 | ||
2224 | if (notify_die(DIE_TRAP, "tagged arithmetic overflow", regs, | |
2225 | 0, 0x26, SIGEMT) == NOTIFY_STOP) | |
2226 | return; | |
2227 | ||
2228 | if (regs->tstate & TSTATE_PRIV) | |
2229 | die_if_kernel("Penguin overflow trap from kernel mode", regs); | |
2230 | if (test_thread_flag(TIF_32BIT)) { | |
2231 | regs->tpc &= 0xffffffff; | |
2232 | regs->tnpc &= 0xffffffff; | |
2233 | } | |
2234 | info.si_signo = SIGEMT; | |
2235 | info.si_errno = 0; | |
2236 | info.si_code = EMT_TAGOVF; | |
2237 | info.si_addr = (void __user *)regs->tpc; | |
2238 | info.si_trapno = 0; | |
2239 | force_sig_info(SIGEMT, &info, current); | |
2240 | } | |
2241 | ||
2242 | void do_div0(struct pt_regs *regs) | |
2243 | { | |
2244 | siginfo_t info; | |
2245 | ||
2246 | if (notify_die(DIE_TRAP, "integer division by zero", regs, | |
2247 | 0, 0x28, SIGFPE) == NOTIFY_STOP) | |
2248 | return; | |
2249 | ||
2250 | if (regs->tstate & TSTATE_PRIV) | |
2251 | die_if_kernel("TL0: Kernel divide by zero.", regs); | |
2252 | if (test_thread_flag(TIF_32BIT)) { | |
2253 | regs->tpc &= 0xffffffff; | |
2254 | regs->tnpc &= 0xffffffff; | |
2255 | } | |
2256 | info.si_signo = SIGFPE; | |
2257 | info.si_errno = 0; | |
2258 | info.si_code = FPE_INTDIV; | |
2259 | info.si_addr = (void __user *)regs->tpc; | |
2260 | info.si_trapno = 0; | |
2261 | force_sig_info(SIGFPE, &info, current); | |
2262 | } | |
2263 | ||
99cd2201 | 2264 | static void instruction_dump(unsigned int *pc) |
1da177e4 LT |
2265 | { |
2266 | int i; | |
2267 | ||
2268 | if ((((unsigned long) pc) & 3)) | |
2269 | return; | |
2270 | ||
2271 | printk("Instruction DUMP:"); | |
2272 | for (i = -3; i < 6; i++) | |
2273 | printk("%c%08x%c",i?' ':'<',pc[i],i?' ':'>'); | |
2274 | printk("\n"); | |
2275 | } | |
2276 | ||
99cd2201 | 2277 | static void user_instruction_dump(unsigned int __user *pc) |
1da177e4 LT |
2278 | { |
2279 | int i; | |
2280 | unsigned int buf[9]; | |
2281 | ||
2282 | if ((((unsigned long) pc) & 3)) | |
2283 | return; | |
2284 | ||
2285 | if (copy_from_user(buf, pc - 3, sizeof(buf))) | |
2286 | return; | |
2287 | ||
2288 | printk("Instruction DUMP:"); | |
2289 | for (i = 0; i < 9; i++) | |
2290 | printk("%c%08x%c",i==3?' ':'<',buf[i],i==3?' ':'>'); | |
2291 | printk("\n"); | |
2292 | } | |
2293 | ||
2294 | void show_stack(struct task_struct *tsk, unsigned long *_ksp) | |
2295 | { | |
c6fee081 | 2296 | unsigned long fp, ksp; |
c1f193a7 | 2297 | struct thread_info *tp; |
1da177e4 | 2298 | int count = 0; |
667f0cee DM |
2299 | #ifdef CONFIG_FUNCTION_GRAPH_TRACER |
2300 | int graph = 0; | |
2301 | #endif | |
1da177e4 LT |
2302 | |
2303 | ksp = (unsigned long) _ksp; | |
c1f193a7 DM |
2304 | if (!tsk) |
2305 | tsk = current; | |
2306 | tp = task_thread_info(tsk); | |
2307 | if (ksp == 0UL) { | |
2308 | if (tsk == current) | |
2309 | asm("mov %%fp, %0" : "=r" (ksp)); | |
2310 | else | |
2311 | ksp = tp->ksp; | |
2312 | } | |
1da177e4 LT |
2313 | if (tp == current_thread_info()) |
2314 | flushw_all(); | |
2315 | ||
2316 | fp = ksp + STACK_BIAS; | |
1da177e4 | 2317 | |
4fe3ebec | 2318 | printk("Call Trace:\n"); |
1da177e4 | 2319 | do { |
14d2c68b | 2320 | struct sparc_stackf *sf; |
77c664fa DM |
2321 | struct pt_regs *regs; |
2322 | unsigned long pc; | |
2323 | ||
4f70f7a9 | 2324 | if (!kstack_valid(tp, fp)) |
1da177e4 | 2325 | break; |
14d2c68b DM |
2326 | sf = (struct sparc_stackf *) fp; |
2327 | regs = (struct pt_regs *) (sf + 1); | |
77c664fa | 2328 | |
4f70f7a9 | 2329 | if (kstack_is_trap_frame(tp, regs)) { |
14d2c68b DM |
2330 | if (!(regs->tstate & TSTATE_PRIV)) |
2331 | break; | |
77c664fa DM |
2332 | pc = regs->tpc; |
2333 | fp = regs->u_regs[UREG_I6] + STACK_BIAS; | |
2334 | } else { | |
14d2c68b DM |
2335 | pc = sf->callers_pc; |
2336 | fp = (unsigned long)sf->fp + STACK_BIAS; | |
77c664fa DM |
2337 | } |
2338 | ||
4fe3ebec | 2339 | printk(" [%016lx] %pS\n", pc, (void *) pc); |
667f0cee DM |
2340 | #ifdef CONFIG_FUNCTION_GRAPH_TRACER |
2341 | if ((pc + 8UL) == (unsigned long) &return_to_handler) { | |
2342 | int index = tsk->curr_ret_stack; | |
2343 | if (tsk->ret_stack && index >= graph) { | |
2344 | pc = tsk->ret_stack[index - graph].ret; | |
2345 | printk(" [%016lx] %pS\n", pc, (void *) pc); | |
2346 | graph++; | |
2347 | } | |
2348 | } | |
2349 | #endif | |
1da177e4 | 2350 | } while (++count < 16); |
1da177e4 LT |
2351 | } |
2352 | ||
1da177e4 LT |
2353 | static inline struct reg_window *kernel_stack_up(struct reg_window *rw) |
2354 | { | |
2355 | unsigned long fp = rw->ins[6]; | |
2356 | ||
2357 | if (!fp) | |
2358 | return NULL; | |
2359 | ||
2360 | return (struct reg_window *) (fp + STACK_BIAS); | |
2361 | } | |
2362 | ||
2363 | void die_if_kernel(char *str, struct pt_regs *regs) | |
2364 | { | |
2365 | static int die_counter; | |
1da177e4 LT |
2366 | int count = 0; |
2367 | ||
2368 | /* Amuse the user. */ | |
2369 | printk( | |
2370 | " \\|/ ____ \\|/\n" | |
2371 | " \"@'/ .. \\`@\"\n" | |
2372 | " /_| \\__/ |_\\\n" | |
2373 | " \\__U_/\n"); | |
2374 | ||
19c5870c | 2375 | printk("%s(%d): %s [#%d]\n", current->comm, task_pid_nr(current), str, ++die_counter); |
1da177e4 LT |
2376 | notify_die(DIE_OOPS, str, regs, 0, 255, SIGSEGV); |
2377 | __asm__ __volatile__("flushw"); | |
dbf3e950 | 2378 | show_regs(regs); |
373d4d09 | 2379 | add_taint(TAINT_DIE, LOCKDEP_NOW_UNRELIABLE); |
1da177e4 | 2380 | if (regs->tstate & TSTATE_PRIV) { |
cb256aa6 | 2381 | struct thread_info *tp = current_thread_info(); |
1da177e4 LT |
2382 | struct reg_window *rw = (struct reg_window *) |
2383 | (regs->u_regs[UREG_FP] + STACK_BIAS); | |
2384 | ||
2385 | /* Stop the back trace when we hit userland or we | |
2386 | * find some badly aligned kernel stack. | |
2387 | */ | |
2388 | while (rw && | |
cb256aa6 DM |
2389 | count++ < 30 && |
2390 | kstack_valid(tp, (unsigned long) rw)) { | |
4fe3ebec DM |
2391 | printk("Caller[%016lx]: %pS\n", rw->ins[7], |
2392 | (void *) rw->ins[7]); | |
1da177e4 LT |
2393 | |
2394 | rw = kernel_stack_up(rw); | |
2395 | } | |
2396 | instruction_dump ((unsigned int *) regs->tpc); | |
2397 | } else { | |
2398 | if (test_thread_flag(TIF_32BIT)) { | |
2399 | regs->tpc &= 0xffffffff; | |
2400 | regs->tnpc &= 0xffffffff; | |
2401 | } | |
2402 | user_instruction_dump ((unsigned int __user *) regs->tpc); | |
2403 | } | |
1da177e4 LT |
2404 | if (regs->tstate & TSTATE_PRIV) |
2405 | do_exit(SIGKILL); | |
2406 | do_exit(SIGSEGV); | |
2407 | } | |
917c3660 | 2408 | EXPORT_SYMBOL(die_if_kernel); |
1da177e4 | 2409 | |
6e7726e1 DM |
2410 | #define VIS_OPCODE_MASK ((0x3 << 30) | (0x3f << 19)) |
2411 | #define VIS_OPCODE_VAL ((0x2 << 30) | (0x36 << 19)) | |
2412 | ||
1da177e4 LT |
2413 | extern int handle_popc(u32 insn, struct pt_regs *regs); |
2414 | extern int handle_ldf_stq(u32 insn, struct pt_regs *regs); | |
2415 | ||
2416 | void do_illegal_instruction(struct pt_regs *regs) | |
2417 | { | |
2418 | unsigned long pc = regs->tpc; | |
2419 | unsigned long tstate = regs->tstate; | |
2420 | u32 insn; | |
2421 | siginfo_t info; | |
2422 | ||
2423 | if (notify_die(DIE_TRAP, "illegal instruction", regs, | |
2424 | 0, 0x10, SIGILL) == NOTIFY_STOP) | |
2425 | return; | |
2426 | ||
2427 | if (tstate & TSTATE_PRIV) | |
2428 | die_if_kernel("Kernel illegal instruction", regs); | |
2429 | if (test_thread_flag(TIF_32BIT)) | |
2430 | pc = (u32)pc; | |
2431 | if (get_user(insn, (u32 __user *) pc) != -EFAULT) { | |
2432 | if ((insn & 0xc1ffc000) == 0x81700000) /* POPC */ { | |
2433 | if (handle_popc(insn, regs)) | |
2434 | return; | |
2435 | } else if ((insn & 0xc1580000) == 0xc1100000) /* LDQ/STQ */ { | |
2436 | if (handle_ldf_stq(insn, regs)) | |
2437 | return; | |
0c51ed93 | 2438 | } else if (tlb_type == hypervisor) { |
6e7726e1 DM |
2439 | if ((insn & VIS_OPCODE_MASK) == VIS_OPCODE_VAL) { |
2440 | if (!vis_emul(regs, insn)) | |
2441 | return; | |
2442 | } else { | |
2443 | struct fpustate *f = FPUSTATE; | |
0c51ed93 | 2444 | |
456d3d42 DM |
2445 | /* On UltraSPARC T2 and later, FPU insns which |
2446 | * are not implemented in HW signal an illegal | |
2447 | * instruction trap and do not set the FP Trap | |
2448 | * Trap in the %fsr to unimplemented_FPop. | |
6e7726e1 | 2449 | */ |
456d3d42 | 2450 | if (do_mathemu(regs, f, true)) |
6e7726e1 DM |
2451 | return; |
2452 | } | |
1da177e4 LT |
2453 | } |
2454 | } | |
2455 | info.si_signo = SIGILL; | |
2456 | info.si_errno = 0; | |
2457 | info.si_code = ILL_ILLOPC; | |
2458 | info.si_addr = (void __user *)pc; | |
2459 | info.si_trapno = 0; | |
2460 | force_sig_info(SIGILL, &info, current); | |
2461 | } | |
2462 | ||
ed6b0b45 DM |
2463 | extern void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn); |
2464 | ||
1da177e4 LT |
2465 | void mem_address_unaligned(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr) |
2466 | { | |
2467 | siginfo_t info; | |
2468 | ||
2469 | if (notify_die(DIE_TRAP, "memory address unaligned", regs, | |
2470 | 0, 0x34, SIGSEGV) == NOTIFY_STOP) | |
2471 | return; | |
2472 | ||
2473 | if (regs->tstate & TSTATE_PRIV) { | |
ed6b0b45 | 2474 | kernel_unaligned_trap(regs, *((unsigned int *)regs->tpc)); |
1da177e4 LT |
2475 | return; |
2476 | } | |
2477 | info.si_signo = SIGBUS; | |
2478 | info.si_errno = 0; | |
2479 | info.si_code = BUS_ADRALN; | |
2480 | info.si_addr = (void __user *)sfar; | |
2481 | info.si_trapno = 0; | |
2482 | force_sig_info(SIGBUS, &info, current); | |
2483 | } | |
2484 | ||
9f8a5b84 | 2485 | void sun4v_do_mna(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx) |
ed6b0b45 DM |
2486 | { |
2487 | siginfo_t info; | |
2488 | ||
2489 | if (notify_die(DIE_TRAP, "memory address unaligned", regs, | |
2490 | 0, 0x34, SIGSEGV) == NOTIFY_STOP) | |
2491 | return; | |
2492 | ||
2493 | if (regs->tstate & TSTATE_PRIV) { | |
2494 | kernel_unaligned_trap(regs, *((unsigned int *)regs->tpc)); | |
2495 | return; | |
2496 | } | |
2497 | info.si_signo = SIGBUS; | |
2498 | info.si_errno = 0; | |
2499 | info.si_code = BUS_ADRALN; | |
2500 | info.si_addr = (void __user *) addr; | |
2501 | info.si_trapno = 0; | |
2502 | force_sig_info(SIGBUS, &info, current); | |
2503 | } | |
2504 | ||
1da177e4 LT |
2505 | void do_privop(struct pt_regs *regs) |
2506 | { | |
2507 | siginfo_t info; | |
2508 | ||
2509 | if (notify_die(DIE_TRAP, "privileged operation", regs, | |
2510 | 0, 0x11, SIGILL) == NOTIFY_STOP) | |
2511 | return; | |
2512 | ||
2513 | if (test_thread_flag(TIF_32BIT)) { | |
2514 | regs->tpc &= 0xffffffff; | |
2515 | regs->tnpc &= 0xffffffff; | |
2516 | } | |
2517 | info.si_signo = SIGILL; | |
2518 | info.si_errno = 0; | |
2519 | info.si_code = ILL_PRVOPC; | |
2520 | info.si_addr = (void __user *)regs->tpc; | |
2521 | info.si_trapno = 0; | |
2522 | force_sig_info(SIGILL, &info, current); | |
2523 | } | |
2524 | ||
2525 | void do_privact(struct pt_regs *regs) | |
2526 | { | |
2527 | do_privop(regs); | |
2528 | } | |
2529 | ||
2530 | /* Trap level 1 stuff or other traps we should never see... */ | |
2531 | void do_cee(struct pt_regs *regs) | |
2532 | { | |
2533 | die_if_kernel("TL0: Cache Error Exception", regs); | |
2534 | } | |
2535 | ||
2536 | void do_cee_tl1(struct pt_regs *regs) | |
2537 | { | |
2538 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
2539 | die_if_kernel("TL1: Cache Error Exception", regs); | |
2540 | } | |
2541 | ||
2542 | void do_dae_tl1(struct pt_regs *regs) | |
2543 | { | |
2544 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
2545 | die_if_kernel("TL1: Data Access Exception", regs); | |
2546 | } | |
2547 | ||
2548 | void do_iae_tl1(struct pt_regs *regs) | |
2549 | { | |
2550 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
2551 | die_if_kernel("TL1: Instruction Access Exception", regs); | |
2552 | } | |
2553 | ||
2554 | void do_div0_tl1(struct pt_regs *regs) | |
2555 | { | |
2556 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
2557 | die_if_kernel("TL1: DIV0 Exception", regs); | |
2558 | } | |
2559 | ||
2560 | void do_fpdis_tl1(struct pt_regs *regs) | |
2561 | { | |
2562 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
2563 | die_if_kernel("TL1: FPU Disabled", regs); | |
2564 | } | |
2565 | ||
2566 | void do_fpieee_tl1(struct pt_regs *regs) | |
2567 | { | |
2568 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
2569 | die_if_kernel("TL1: FPU IEEE Exception", regs); | |
2570 | } | |
2571 | ||
2572 | void do_fpother_tl1(struct pt_regs *regs) | |
2573 | { | |
2574 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
2575 | die_if_kernel("TL1: FPU Other Exception", regs); | |
2576 | } | |
2577 | ||
2578 | void do_ill_tl1(struct pt_regs *regs) | |
2579 | { | |
2580 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
2581 | die_if_kernel("TL1: Illegal Instruction Exception", regs); | |
2582 | } | |
2583 | ||
2584 | void do_irq_tl1(struct pt_regs *regs) | |
2585 | { | |
2586 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
2587 | die_if_kernel("TL1: IRQ Exception", regs); | |
2588 | } | |
2589 | ||
2590 | void do_lddfmna_tl1(struct pt_regs *regs) | |
2591 | { | |
2592 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
2593 | die_if_kernel("TL1: LDDF Exception", regs); | |
2594 | } | |
2595 | ||
2596 | void do_stdfmna_tl1(struct pt_regs *regs) | |
2597 | { | |
2598 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
2599 | die_if_kernel("TL1: STDF Exception", regs); | |
2600 | } | |
2601 | ||
2602 | void do_paw(struct pt_regs *regs) | |
2603 | { | |
2604 | die_if_kernel("TL0: Phys Watchpoint Exception", regs); | |
2605 | } | |
2606 | ||
2607 | void do_paw_tl1(struct pt_regs *regs) | |
2608 | { | |
2609 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
2610 | die_if_kernel("TL1: Phys Watchpoint Exception", regs); | |
2611 | } | |
2612 | ||
2613 | void do_vaw(struct pt_regs *regs) | |
2614 | { | |
2615 | die_if_kernel("TL0: Virt Watchpoint Exception", regs); | |
2616 | } | |
2617 | ||
2618 | void do_vaw_tl1(struct pt_regs *regs) | |
2619 | { | |
2620 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
2621 | die_if_kernel("TL1: Virt Watchpoint Exception", regs); | |
2622 | } | |
2623 | ||
2624 | void do_tof_tl1(struct pt_regs *regs) | |
2625 | { | |
2626 | dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); | |
2627 | die_if_kernel("TL1: Tag Overflow Exception", regs); | |
2628 | } | |
2629 | ||
2630 | void do_getpsr(struct pt_regs *regs) | |
2631 | { | |
2632 | regs->u_regs[UREG_I0] = tstate_to_psr(regs->tstate); | |
2633 | regs->tpc = regs->tnpc; | |
2634 | regs->tnpc += 4; | |
2635 | if (test_thread_flag(TIF_32BIT)) { | |
2636 | regs->tpc &= 0xffffffff; | |
2637 | regs->tnpc &= 0xffffffff; | |
2638 | } | |
2639 | } | |
2640 | ||
56fb4df6 | 2641 | struct trap_per_cpu trap_block[NR_CPUS]; |
5a5488d3 | 2642 | EXPORT_SYMBOL(trap_block); |
56fb4df6 DM |
2643 | |
2644 | /* This can get invoked before sched_init() so play it super safe | |
2645 | * and use hard_smp_processor_id(). | |
2646 | */ | |
9843099f | 2647 | void notrace init_cur_cpu_trap(struct thread_info *t) |
56fb4df6 DM |
2648 | { |
2649 | int cpu = hard_smp_processor_id(); | |
2650 | struct trap_per_cpu *p = &trap_block[cpu]; | |
2651 | ||
72aff53f | 2652 | p->thread = t; |
56fb4df6 DM |
2653 | p->pgd_paddr = 0; |
2654 | } | |
2655 | ||
1da177e4 | 2656 | extern void thread_info_offsets_are_bolixed_dave(void); |
56fb4df6 | 2657 | extern void trap_per_cpu_offsets_are_bolixed_dave(void); |
dcc1e8dd | 2658 | extern void tsb_config_offsets_are_bolixed_dave(void); |
1da177e4 LT |
2659 | |
2660 | /* Only invoked on boot processor. */ | |
2661 | void __init trap_init(void) | |
2662 | { | |
2663 | /* Compile time sanity check. */ | |
82497789 DM |
2664 | BUILD_BUG_ON(TI_TASK != offsetof(struct thread_info, task) || |
2665 | TI_FLAGS != offsetof(struct thread_info, flags) || | |
2666 | TI_CPU != offsetof(struct thread_info, cpu) || | |
2667 | TI_FPSAVED != offsetof(struct thread_info, fpsaved) || | |
2668 | TI_KSP != offsetof(struct thread_info, ksp) || | |
2669 | TI_FAULT_ADDR != offsetof(struct thread_info, | |
2670 | fault_address) || | |
2671 | TI_KREGS != offsetof(struct thread_info, kregs) || | |
2672 | TI_UTRAPS != offsetof(struct thread_info, utraps) || | |
2673 | TI_EXEC_DOMAIN != offsetof(struct thread_info, | |
2674 | exec_domain) || | |
2675 | TI_REG_WINDOW != offsetof(struct thread_info, | |
2676 | reg_window) || | |
2677 | TI_RWIN_SPTRS != offsetof(struct thread_info, | |
2678 | rwbuf_stkptrs) || | |
2679 | TI_GSR != offsetof(struct thread_info, gsr) || | |
2680 | TI_XFSR != offsetof(struct thread_info, xfsr) || | |
82497789 DM |
2681 | TI_PRE_COUNT != offsetof(struct thread_info, |
2682 | preempt_count) || | |
2683 | TI_NEW_CHILD != offsetof(struct thread_info, new_child) || | |
dff933da AV |
2684 | TI_CURRENT_DS != offsetof(struct thread_info, |
2685 | current_ds) || | |
82497789 DM |
2686 | TI_RESTART_BLOCK != offsetof(struct thread_info, |
2687 | restart_block) || | |
2688 | TI_KUNA_REGS != offsetof(struct thread_info, | |
2689 | kern_una_regs) || | |
2690 | TI_KUNA_INSN != offsetof(struct thread_info, | |
2691 | kern_una_insn) || | |
2692 | TI_FPREGS != offsetof(struct thread_info, fpregs) || | |
2693 | (TI_FPREGS & (64 - 1))); | |
2694 | ||
2695 | BUILD_BUG_ON(TRAP_PER_CPU_THREAD != offsetof(struct trap_per_cpu, | |
2696 | thread) || | |
2697 | (TRAP_PER_CPU_PGD_PADDR != | |
2698 | offsetof(struct trap_per_cpu, pgd_paddr)) || | |
2699 | (TRAP_PER_CPU_CPU_MONDO_PA != | |
2700 | offsetof(struct trap_per_cpu, cpu_mondo_pa)) || | |
2701 | (TRAP_PER_CPU_DEV_MONDO_PA != | |
2702 | offsetof(struct trap_per_cpu, dev_mondo_pa)) || | |
2703 | (TRAP_PER_CPU_RESUM_MONDO_PA != | |
2704 | offsetof(struct trap_per_cpu, resum_mondo_pa)) || | |
2705 | (TRAP_PER_CPU_RESUM_KBUF_PA != | |
2706 | offsetof(struct trap_per_cpu, resum_kernel_buf_pa)) || | |
2707 | (TRAP_PER_CPU_NONRESUM_MONDO_PA != | |
2708 | offsetof(struct trap_per_cpu, nonresum_mondo_pa)) || | |
2709 | (TRAP_PER_CPU_NONRESUM_KBUF_PA != | |
2710 | offsetof(struct trap_per_cpu, nonresum_kernel_buf_pa)) || | |
2711 | (TRAP_PER_CPU_FAULT_INFO != | |
2712 | offsetof(struct trap_per_cpu, fault_info)) || | |
2713 | (TRAP_PER_CPU_CPU_MONDO_BLOCK_PA != | |
2714 | offsetof(struct trap_per_cpu, cpu_mondo_block_pa)) || | |
2715 | (TRAP_PER_CPU_CPU_LIST_PA != | |
2716 | offsetof(struct trap_per_cpu, cpu_list_pa)) || | |
2717 | (TRAP_PER_CPU_TSB_HUGE != | |
2718 | offsetof(struct trap_per_cpu, tsb_huge)) || | |
2719 | (TRAP_PER_CPU_TSB_HUGE_TEMP != | |
2720 | offsetof(struct trap_per_cpu, tsb_huge_temp)) || | |
2721 | (TRAP_PER_CPU_IRQ_WORKLIST_PA != | |
2722 | offsetof(struct trap_per_cpu, irq_worklist_pa)) || | |
2723 | (TRAP_PER_CPU_CPU_MONDO_QMASK != | |
2724 | offsetof(struct trap_per_cpu, cpu_mondo_qmask)) || | |
2725 | (TRAP_PER_CPU_DEV_MONDO_QMASK != | |
2726 | offsetof(struct trap_per_cpu, dev_mondo_qmask)) || | |
2727 | (TRAP_PER_CPU_RESUM_QMASK != | |
2728 | offsetof(struct trap_per_cpu, resum_qmask)) || | |
2729 | (TRAP_PER_CPU_NONRESUM_QMASK != | |
2730 | offsetof(struct trap_per_cpu, nonresum_qmask)) || | |
2731 | (TRAP_PER_CPU_PER_CPU_BASE != | |
2732 | offsetof(struct trap_per_cpu, __per_cpu_base))); | |
2733 | ||
2734 | BUILD_BUG_ON((TSB_CONFIG_TSB != | |
2735 | offsetof(struct tsb_config, tsb)) || | |
2736 | (TSB_CONFIG_RSS_LIMIT != | |
2737 | offsetof(struct tsb_config, tsb_rss_limit)) || | |
2738 | (TSB_CONFIG_NENTRIES != | |
2739 | offsetof(struct tsb_config, tsb_nentries)) || | |
2740 | (TSB_CONFIG_REG_VAL != | |
2741 | offsetof(struct tsb_config, tsb_reg_val)) || | |
2742 | (TSB_CONFIG_MAP_VADDR != | |
2743 | offsetof(struct tsb_config, tsb_map_vaddr)) || | |
2744 | (TSB_CONFIG_MAP_PTE != | |
2745 | offsetof(struct tsb_config, tsb_map_pte))); | |
dcc1e8dd | 2746 | |
1da177e4 LT |
2747 | /* Attach to the address space of init_task. On SMP we |
2748 | * do this in smp.c:smp_callin for other cpus. | |
2749 | */ | |
2750 | atomic_inc(&init_mm.mm_count); | |
2751 | current->active_mm = &init_mm; | |
2752 | } |