diff options
Diffstat (limited to 'arch/sparc64/kernel/cherrs.S')
-rw-r--r-- | arch/sparc64/kernel/cherrs.S | 579 |
1 files changed, 579 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/cherrs.S b/arch/sparc64/kernel/cherrs.S new file mode 100644 index 000000000000..89afebd7eca0 --- /dev/null +++ b/arch/sparc64/kernel/cherrs.S | |||
@@ -0,0 +1,579 @@ | |||
1 | /* These get patched into the trap table at boot time | ||
2 | * once we know we have a cheetah processor. | ||
3 | */ | ||
4 | .globl cheetah_fecc_trap_vector | ||
5 | .type cheetah_fecc_trap_vector,#function | ||
6 | cheetah_fecc_trap_vector: | ||
7 | membar #Sync | ||
8 | ldxa [%g0] ASI_DCU_CONTROL_REG, %g1 | ||
9 | andn %g1, DCU_DC | DCU_IC, %g1 | ||
10 | stxa %g1, [%g0] ASI_DCU_CONTROL_REG | ||
11 | membar #Sync | ||
12 | sethi %hi(cheetah_fast_ecc), %g2 | ||
13 | jmpl %g2 + %lo(cheetah_fast_ecc), %g0 | ||
14 | mov 0, %g1 | ||
15 | .size cheetah_fecc_trap_vector,.-cheetah_fecc_trap_vector | ||
16 | |||
17 | .globl cheetah_fecc_trap_vector_tl1 | ||
18 | .type cheetah_fecc_trap_vector_tl1,#function | ||
19 | cheetah_fecc_trap_vector_tl1: | ||
20 | membar #Sync | ||
21 | ldxa [%g0] ASI_DCU_CONTROL_REG, %g1 | ||
22 | andn %g1, DCU_DC | DCU_IC, %g1 | ||
23 | stxa %g1, [%g0] ASI_DCU_CONTROL_REG | ||
24 | membar #Sync | ||
25 | sethi %hi(cheetah_fast_ecc), %g2 | ||
26 | jmpl %g2 + %lo(cheetah_fast_ecc), %g0 | ||
27 | mov 1, %g1 | ||
28 | .size cheetah_fecc_trap_vector_tl1,.-cheetah_fecc_trap_vector_tl1 | ||
29 | |||
30 | .globl cheetah_cee_trap_vector | ||
31 | .type cheetah_cee_trap_vector,#function | ||
32 | cheetah_cee_trap_vector: | ||
33 | membar #Sync | ||
34 | ldxa [%g0] ASI_DCU_CONTROL_REG, %g1 | ||
35 | andn %g1, DCU_IC, %g1 | ||
36 | stxa %g1, [%g0] ASI_DCU_CONTROL_REG | ||
37 | membar #Sync | ||
38 | sethi %hi(cheetah_cee), %g2 | ||
39 | jmpl %g2 + %lo(cheetah_cee), %g0 | ||
40 | mov 0, %g1 | ||
41 | .size cheetah_cee_trap_vector,.-cheetah_cee_trap_vector | ||
42 | |||
43 | .globl cheetah_cee_trap_vector_tl1 | ||
44 | .type cheetah_cee_trap_vector_tl1,#function | ||
45 | cheetah_cee_trap_vector_tl1: | ||
46 | membar #Sync | ||
47 | ldxa [%g0] ASI_DCU_CONTROL_REG, %g1 | ||
48 | andn %g1, DCU_IC, %g1 | ||
49 | stxa %g1, [%g0] ASI_DCU_CONTROL_REG | ||
50 | membar #Sync | ||
51 | sethi %hi(cheetah_cee), %g2 | ||
52 | jmpl %g2 + %lo(cheetah_cee), %g0 | ||
53 | mov 1, %g1 | ||
54 | .size cheetah_cee_trap_vector_tl1,.-cheetah_cee_trap_vector_tl1 | ||
55 | |||
56 | .globl cheetah_deferred_trap_vector | ||
57 | .type cheetah_deferred_trap_vector,#function | ||
58 | cheetah_deferred_trap_vector: | ||
59 | membar #Sync | ||
60 | ldxa [%g0] ASI_DCU_CONTROL_REG, %g1; | ||
61 | andn %g1, DCU_DC | DCU_IC, %g1; | ||
62 | stxa %g1, [%g0] ASI_DCU_CONTROL_REG; | ||
63 | membar #Sync; | ||
64 | sethi %hi(cheetah_deferred_trap), %g2 | ||
65 | jmpl %g2 + %lo(cheetah_deferred_trap), %g0 | ||
66 | mov 0, %g1 | ||
67 | .size cheetah_deferred_trap_vector,.-cheetah_deferred_trap_vector | ||
68 | |||
69 | .globl cheetah_deferred_trap_vector_tl1 | ||
70 | .type cheetah_deferred_trap_vector_tl1,#function | ||
71 | cheetah_deferred_trap_vector_tl1: | ||
72 | membar #Sync; | ||
73 | ldxa [%g0] ASI_DCU_CONTROL_REG, %g1; | ||
74 | andn %g1, DCU_DC | DCU_IC, %g1; | ||
75 | stxa %g1, [%g0] ASI_DCU_CONTROL_REG; | ||
76 | membar #Sync; | ||
77 | sethi %hi(cheetah_deferred_trap), %g2 | ||
78 | jmpl %g2 + %lo(cheetah_deferred_trap), %g0 | ||
79 | mov 1, %g1 | ||
80 | .size cheetah_deferred_trap_vector_tl1,.-cheetah_deferred_trap_vector_tl1 | ||
81 | |||
82 | /* Cheetah+ specific traps. These are for the new I/D cache parity | ||
83 | * error traps. The first argument to cheetah_plus_parity_handler | ||
84 | * is encoded as follows: | ||
85 | * | ||
86 | * Bit0: 0=dcache,1=icache | ||
87 | * Bit1: 0=recoverable,1=unrecoverable | ||
88 | */ | ||
89 | .globl cheetah_plus_dcpe_trap_vector | ||
90 | .type cheetah_plus_dcpe_trap_vector,#function | ||
91 | cheetah_plus_dcpe_trap_vector: | ||
92 | membar #Sync | ||
93 | sethi %hi(do_cheetah_plus_data_parity), %g7 | ||
94 | jmpl %g7 + %lo(do_cheetah_plus_data_parity), %g0 | ||
95 | nop | ||
96 | nop | ||
97 | nop | ||
98 | nop | ||
99 | nop | ||
100 | .size cheetah_plus_dcpe_trap_vector,.-cheetah_plus_dcpe_trap_vector | ||
101 | |||
102 | .type do_cheetah_plus_data_parity,#function | ||
103 | do_cheetah_plus_data_parity: | ||
104 | rdpr %pil, %g2 | ||
105 | wrpr %g0, 15, %pil | ||
106 | ba,pt %xcc, etrap_irq | ||
107 | rd %pc, %g7 | ||
108 | #ifdef CONFIG_TRACE_IRQFLAGS | ||
109 | call trace_hardirqs_off | ||
110 | nop | ||
111 | #endif | ||
112 | mov 0x0, %o0 | ||
113 | call cheetah_plus_parity_error | ||
114 | add %sp, PTREGS_OFF, %o1 | ||
115 | ba,a,pt %xcc, rtrap_irq | ||
116 | .size do_cheetah_plus_data_parity,.-do_cheetah_plus_data_parity | ||
117 | |||
118 | .globl cheetah_plus_dcpe_trap_vector_tl1 | ||
119 | .type cheetah_plus_dcpe_trap_vector_tl1,#function | ||
120 | cheetah_plus_dcpe_trap_vector_tl1: | ||
121 | membar #Sync | ||
122 | wrpr PSTATE_IG | PSTATE_PEF | PSTATE_PRIV, %pstate | ||
123 | sethi %hi(do_dcpe_tl1), %g3 | ||
124 | jmpl %g3 + %lo(do_dcpe_tl1), %g0 | ||
125 | nop | ||
126 | nop | ||
127 | nop | ||
128 | nop | ||
129 | .size cheetah_plus_dcpe_trap_vector_tl1,.-cheetah_plus_dcpe_trap_vector_tl1 | ||
130 | |||
131 | .globl cheetah_plus_icpe_trap_vector | ||
132 | .type cheetah_plus_icpe_trap_vector,#function | ||
133 | cheetah_plus_icpe_trap_vector: | ||
134 | membar #Sync | ||
135 | sethi %hi(do_cheetah_plus_insn_parity), %g7 | ||
136 | jmpl %g7 + %lo(do_cheetah_plus_insn_parity), %g0 | ||
137 | nop | ||
138 | nop | ||
139 | nop | ||
140 | nop | ||
141 | nop | ||
142 | .size cheetah_plus_icpe_trap_vector,.-cheetah_plus_icpe_trap_vector | ||
143 | |||
144 | .type do_cheetah_plus_insn_parity,#function | ||
145 | do_cheetah_plus_insn_parity: | ||
146 | rdpr %pil, %g2 | ||
147 | wrpr %g0, 15, %pil | ||
148 | ba,pt %xcc, etrap_irq | ||
149 | rd %pc, %g7 | ||
150 | #ifdef CONFIG_TRACE_IRQFLAGS | ||
151 | call trace_hardirqs_off | ||
152 | nop | ||
153 | #endif | ||
154 | mov 0x1, %o0 | ||
155 | call cheetah_plus_parity_error | ||
156 | add %sp, PTREGS_OFF, %o1 | ||
157 | ba,a,pt %xcc, rtrap_irq | ||
158 | .size do_cheetah_plus_insn_parity,.-do_cheetah_plus_insn_parity | ||
159 | |||
160 | .globl cheetah_plus_icpe_trap_vector_tl1 | ||
161 | .type cheetah_plus_icpe_trap_vector_tl1,#function | ||
162 | cheetah_plus_icpe_trap_vector_tl1: | ||
163 | membar #Sync | ||
164 | wrpr PSTATE_IG | PSTATE_PEF | PSTATE_PRIV, %pstate | ||
165 | sethi %hi(do_icpe_tl1), %g3 | ||
166 | jmpl %g3 + %lo(do_icpe_tl1), %g0 | ||
167 | nop | ||
168 | nop | ||
169 | nop | ||
170 | nop | ||
171 | .size cheetah_plus_icpe_trap_vector_tl1,.-cheetah_plus_icpe_trap_vector_tl1 | ||
172 | |||
173 | /* If we take one of these traps when tl >= 1, then we | ||
174 | * jump to interrupt globals. If some trap level above us | ||
175 | * was also using interrupt globals, we cannot recover. | ||
176 | * We may use all interrupt global registers except %g6. | ||
177 | */ | ||
178 | .globl do_dcpe_tl1 | ||
179 | .type do_dcpe_tl1,#function | ||
180 | do_dcpe_tl1: | ||
181 | rdpr %tl, %g1 ! Save original trap level | ||
182 | mov 1, %g2 ! Setup TSTATE checking loop | ||
183 | sethi %hi(TSTATE_IG), %g3 ! TSTATE mask bit | ||
184 | 1: wrpr %g2, %tl ! Set trap level to check | ||
185 | rdpr %tstate, %g4 ! Read TSTATE for this level | ||
186 | andcc %g4, %g3, %g0 ! Interrupt globals in use? | ||
187 | bne,a,pn %xcc, do_dcpe_tl1_fatal ! Yep, irrecoverable | ||
188 | wrpr %g1, %tl ! Restore original trap level | ||
189 | add %g2, 1, %g2 ! Next trap level | ||
190 | cmp %g2, %g1 ! Hit them all yet? | ||
191 | ble,pt %icc, 1b ! Not yet | ||
192 | nop | ||
193 | wrpr %g1, %tl ! Restore original trap level | ||
194 | do_dcpe_tl1_nonfatal: /* Ok we may use interrupt globals safely. */ | ||
195 | sethi %hi(dcache_parity_tl1_occurred), %g2 | ||
196 | lduw [%g2 + %lo(dcache_parity_tl1_occurred)], %g1 | ||
197 | add %g1, 1, %g1 | ||
198 | stw %g1, [%g2 + %lo(dcache_parity_tl1_occurred)] | ||
199 | /* Reset D-cache parity */ | ||
200 | sethi %hi(1 << 16), %g1 ! D-cache size | ||
201 | mov (1 << 5), %g2 ! D-cache line size | ||
202 | sub %g1, %g2, %g1 ! Move down 1 cacheline | ||
203 | 1: srl %g1, 14, %g3 ! Compute UTAG | ||
204 | membar #Sync | ||
205 | stxa %g3, [%g1] ASI_DCACHE_UTAG | ||
206 | membar #Sync | ||
207 | sub %g2, 8, %g3 ! 64-bit data word within line | ||
208 | 2: membar #Sync | ||
209 | stxa %g0, [%g1 + %g3] ASI_DCACHE_DATA | ||
210 | membar #Sync | ||
211 | subcc %g3, 8, %g3 ! Next 64-bit data word | ||
212 | bge,pt %icc, 2b | ||
213 | nop | ||
214 | subcc %g1, %g2, %g1 ! Next cacheline | ||
215 | bge,pt %icc, 1b | ||
216 | nop | ||
217 | ba,pt %xcc, dcpe_icpe_tl1_common | ||
218 | nop | ||
219 | |||
220 | do_dcpe_tl1_fatal: | ||
221 | sethi %hi(1f), %g7 | ||
222 | ba,pt %xcc, etraptl1 | ||
223 | 1: or %g7, %lo(1b), %g7 | ||
224 | mov 0x2, %o0 | ||
225 | call cheetah_plus_parity_error | ||
226 | add %sp, PTREGS_OFF, %o1 | ||
227 | ba,pt %xcc, rtrap | ||
228 | nop | ||
229 | .size do_dcpe_tl1,.-do_dcpe_tl1 | ||
230 | |||
231 | .globl do_icpe_tl1 | ||
232 | .type do_icpe_tl1,#function | ||
233 | do_icpe_tl1: | ||
234 | rdpr %tl, %g1 ! Save original trap level | ||
235 | mov 1, %g2 ! Setup TSTATE checking loop | ||
236 | sethi %hi(TSTATE_IG), %g3 ! TSTATE mask bit | ||
237 | 1: wrpr %g2, %tl ! Set trap level to check | ||
238 | rdpr %tstate, %g4 ! Read TSTATE for this level | ||
239 | andcc %g4, %g3, %g0 ! Interrupt globals in use? | ||
240 | bne,a,pn %xcc, do_icpe_tl1_fatal ! Yep, irrecoverable | ||
241 | wrpr %g1, %tl ! Restore original trap level | ||
242 | add %g2, 1, %g2 ! Next trap level | ||
243 | cmp %g2, %g1 ! Hit them all yet? | ||
244 | ble,pt %icc, 1b ! Not yet | ||
245 | nop | ||
246 | wrpr %g1, %tl ! Restore original trap level | ||
247 | do_icpe_tl1_nonfatal: /* Ok we may use interrupt globals safely. */ | ||
248 | sethi %hi(icache_parity_tl1_occurred), %g2 | ||
249 | lduw [%g2 + %lo(icache_parity_tl1_occurred)], %g1 | ||
250 | add %g1, 1, %g1 | ||
251 | stw %g1, [%g2 + %lo(icache_parity_tl1_occurred)] | ||
252 | /* Flush I-cache */ | ||
253 | sethi %hi(1 << 15), %g1 ! I-cache size | ||
254 | mov (1 << 5), %g2 ! I-cache line size | ||
255 | sub %g1, %g2, %g1 | ||
256 | 1: or %g1, (2 << 3), %g3 | ||
257 | stxa %g0, [%g3] ASI_IC_TAG | ||
258 | membar #Sync | ||
259 | subcc %g1, %g2, %g1 | ||
260 | bge,pt %icc, 1b | ||
261 | nop | ||
262 | ba,pt %xcc, dcpe_icpe_tl1_common | ||
263 | nop | ||
264 | |||
265 | do_icpe_tl1_fatal: | ||
266 | sethi %hi(1f), %g7 | ||
267 | ba,pt %xcc, etraptl1 | ||
268 | 1: or %g7, %lo(1b), %g7 | ||
269 | mov 0x3, %o0 | ||
270 | call cheetah_plus_parity_error | ||
271 | add %sp, PTREGS_OFF, %o1 | ||
272 | ba,pt %xcc, rtrap | ||
273 | nop | ||
274 | .size do_icpe_tl1,.-do_icpe_tl1 | ||
275 | |||
276 | .type dcpe_icpe_tl1_common,#function | ||
277 | dcpe_icpe_tl1_common: | ||
278 | /* Flush D-cache, re-enable D/I caches in DCU and finally | ||
279 | * retry the trapping instruction. | ||
280 | */ | ||
281 | sethi %hi(1 << 16), %g1 ! D-cache size | ||
282 | mov (1 << 5), %g2 ! D-cache line size | ||
283 | sub %g1, %g2, %g1 | ||
284 | 1: stxa %g0, [%g1] ASI_DCACHE_TAG | ||
285 | membar #Sync | ||
286 | subcc %g1, %g2, %g1 | ||
287 | bge,pt %icc, 1b | ||
288 | nop | ||
289 | ldxa [%g0] ASI_DCU_CONTROL_REG, %g1 | ||
290 | or %g1, (DCU_DC | DCU_IC), %g1 | ||
291 | stxa %g1, [%g0] ASI_DCU_CONTROL_REG | ||
292 | membar #Sync | ||
293 | retry | ||
294 | .size dcpe_icpe_tl1_common,.-dcpe_icpe_tl1_common | ||
295 | |||
296 | /* Capture I/D/E-cache state into per-cpu error scoreboard. | ||
297 | * | ||
298 | * %g1: (TL>=0) ? 1 : 0 | ||
299 | * %g2: scratch | ||
300 | * %g3: scratch | ||
301 | * %g4: AFSR | ||
302 | * %g5: AFAR | ||
303 | * %g6: unused, will have current thread ptr after etrap | ||
304 | * %g7: scratch | ||
305 | */ | ||
306 | .type __cheetah_log_error,#function | ||
307 | __cheetah_log_error: | ||
308 | /* Put "TL1" software bit into AFSR. */ | ||
309 | and %g1, 0x1, %g1 | ||
310 | sllx %g1, 63, %g2 | ||
311 | or %g4, %g2, %g4 | ||
312 | |||
313 | /* Get log entry pointer for this cpu at this trap level. */ | ||
314 | BRANCH_IF_JALAPENO(g2,g3,50f) | ||
315 | ldxa [%g0] ASI_SAFARI_CONFIG, %g2 | ||
316 | srlx %g2, 17, %g2 | ||
317 | ba,pt %xcc, 60f | ||
318 | and %g2, 0x3ff, %g2 | ||
319 | |||
320 | 50: ldxa [%g0] ASI_JBUS_CONFIG, %g2 | ||
321 | srlx %g2, 17, %g2 | ||
322 | and %g2, 0x1f, %g2 | ||
323 | |||
324 | 60: sllx %g2, 9, %g2 | ||
325 | sethi %hi(cheetah_error_log), %g3 | ||
326 | ldx [%g3 + %lo(cheetah_error_log)], %g3 | ||
327 | brz,pn %g3, 80f | ||
328 | nop | ||
329 | |||
330 | add %g3, %g2, %g3 | ||
331 | sllx %g1, 8, %g1 | ||
332 | add %g3, %g1, %g1 | ||
333 | |||
334 | /* %g1 holds pointer to the top of the logging scoreboard */ | ||
335 | ldx [%g1 + 0x0], %g7 | ||
336 | cmp %g7, -1 | ||
337 | bne,pn %xcc, 80f | ||
338 | nop | ||
339 | |||
340 | stx %g4, [%g1 + 0x0] | ||
341 | stx %g5, [%g1 + 0x8] | ||
342 | add %g1, 0x10, %g1 | ||
343 | |||
344 | /* %g1 now points to D-cache logging area */ | ||
345 | set 0x3ff8, %g2 /* DC_addr mask */ | ||
346 | and %g5, %g2, %g2 /* DC_addr bits of AFAR */ | ||
347 | srlx %g5, 12, %g3 | ||
348 | or %g3, 1, %g3 /* PHYS tag + valid */ | ||
349 | |||
350 | 10: ldxa [%g2] ASI_DCACHE_TAG, %g7 | ||
351 | cmp %g3, %g7 /* TAG match? */ | ||
352 | bne,pt %xcc, 13f | ||
353 | nop | ||
354 | |||
355 | /* Yep, what we want, capture state. */ | ||
356 | stx %g2, [%g1 + 0x20] | ||
357 | stx %g7, [%g1 + 0x28] | ||
358 | |||
359 | /* A membar Sync is required before and after utag access. */ | ||
360 | membar #Sync | ||
361 | ldxa [%g2] ASI_DCACHE_UTAG, %g7 | ||
362 | membar #Sync | ||
363 | stx %g7, [%g1 + 0x30] | ||
364 | ldxa [%g2] ASI_DCACHE_SNOOP_TAG, %g7 | ||
365 | stx %g7, [%g1 + 0x38] | ||
366 | clr %g3 | ||
367 | |||
368 | 12: ldxa [%g2 + %g3] ASI_DCACHE_DATA, %g7 | ||
369 | stx %g7, [%g1] | ||
370 | add %g3, (1 << 5), %g3 | ||
371 | cmp %g3, (4 << 5) | ||
372 | bl,pt %xcc, 12b | ||
373 | add %g1, 0x8, %g1 | ||
374 | |||
375 | ba,pt %xcc, 20f | ||
376 | add %g1, 0x20, %g1 | ||
377 | |||
378 | 13: sethi %hi(1 << 14), %g7 | ||
379 | add %g2, %g7, %g2 | ||
380 | srlx %g2, 14, %g7 | ||
381 | cmp %g7, 4 | ||
382 | bl,pt %xcc, 10b | ||
383 | nop | ||
384 | |||
385 | add %g1, 0x40, %g1 | ||
386 | |||
387 | /* %g1 now points to I-cache logging area */ | ||
388 | 20: set 0x1fe0, %g2 /* IC_addr mask */ | ||
389 | and %g5, %g2, %g2 /* IC_addr bits of AFAR */ | ||
390 | sllx %g2, 1, %g2 /* IC_addr[13:6]==VA[12:5] */ | ||
391 | srlx %g5, (13 - 8), %g3 /* Make PTAG */ | ||
392 | andn %g3, 0xff, %g3 /* Mask off undefined bits */ | ||
393 | |||
394 | 21: ldxa [%g2] ASI_IC_TAG, %g7 | ||
395 | andn %g7, 0xff, %g7 | ||
396 | cmp %g3, %g7 | ||
397 | bne,pt %xcc, 23f | ||
398 | nop | ||
399 | |||
400 | /* Yep, what we want, capture state. */ | ||
401 | stx %g2, [%g1 + 0x40] | ||
402 | stx %g7, [%g1 + 0x48] | ||
403 | add %g2, (1 << 3), %g2 | ||
404 | ldxa [%g2] ASI_IC_TAG, %g7 | ||
405 | add %g2, (1 << 3), %g2 | ||
406 | stx %g7, [%g1 + 0x50] | ||
407 | ldxa [%g2] ASI_IC_TAG, %g7 | ||
408 | add %g2, (1 << 3), %g2 | ||
409 | stx %g7, [%g1 + 0x60] | ||
410 | ldxa [%g2] ASI_IC_TAG, %g7 | ||
411 | stx %g7, [%g1 + 0x68] | ||
412 | sub %g2, (3 << 3), %g2 | ||
413 | ldxa [%g2] ASI_IC_STAG, %g7 | ||
414 | stx %g7, [%g1 + 0x58] | ||
415 | clr %g3 | ||
416 | srlx %g2, 2, %g2 | ||
417 | |||
418 | 22: ldxa [%g2 + %g3] ASI_IC_INSTR, %g7 | ||
419 | stx %g7, [%g1] | ||
420 | add %g3, (1 << 3), %g3 | ||
421 | cmp %g3, (8 << 3) | ||
422 | bl,pt %xcc, 22b | ||
423 | add %g1, 0x8, %g1 | ||
424 | |||
425 | ba,pt %xcc, 30f | ||
426 | add %g1, 0x30, %g1 | ||
427 | |||
428 | 23: sethi %hi(1 << 14), %g7 | ||
429 | add %g2, %g7, %g2 | ||
430 | srlx %g2, 14, %g7 | ||
431 | cmp %g7, 4 | ||
432 | bl,pt %xcc, 21b | ||
433 | nop | ||
434 | |||
435 | add %g1, 0x70, %g1 | ||
436 | |||
437 | /* %g1 now points to E-cache logging area */ | ||
438 | 30: andn %g5, (32 - 1), %g2 | ||
439 | stx %g2, [%g1 + 0x20] | ||
440 | ldxa [%g2] ASI_EC_TAG_DATA, %g7 | ||
441 | stx %g7, [%g1 + 0x28] | ||
442 | ldxa [%g2] ASI_EC_R, %g0 | ||
443 | clr %g3 | ||
444 | |||
445 | 31: ldxa [%g3] ASI_EC_DATA, %g7 | ||
446 | stx %g7, [%g1 + %g3] | ||
447 | add %g3, 0x8, %g3 | ||
448 | cmp %g3, 0x20 | ||
449 | |||
450 | bl,pt %xcc, 31b | ||
451 | nop | ||
452 | 80: | ||
453 | rdpr %tt, %g2 | ||
454 | cmp %g2, 0x70 | ||
455 | be c_fast_ecc | ||
456 | cmp %g2, 0x63 | ||
457 | be c_cee | ||
458 | nop | ||
459 | ba,pt %xcc, c_deferred | ||
460 | .size __cheetah_log_error,.-__cheetah_log_error | ||
461 | |||
462 | /* Cheetah FECC trap handling, we get here from tl{0,1}_fecc | ||
463 | * in the trap table. That code has done a memory barrier | ||
464 | * and has disabled both the I-cache and D-cache in the DCU | ||
465 | * control register. The I-cache is disabled so that we may | ||
466 | * capture the corrupted cache line, and the D-cache is disabled | ||
467 | * because corrupt data may have been placed there and we don't | ||
468 | * want to reference it. | ||
469 | * | ||
470 | * %g1 is one if this trap occurred at %tl >= 1. | ||
471 | * | ||
472 | * Next, we turn off error reporting so that we don't recurse. | ||
473 | */ | ||
474 | .globl cheetah_fast_ecc | ||
475 | .type cheetah_fast_ecc,#function | ||
476 | cheetah_fast_ecc: | ||
477 | ldxa [%g0] ASI_ESTATE_ERROR_EN, %g2 | ||
478 | andn %g2, ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN, %g2 | ||
479 | stxa %g2, [%g0] ASI_ESTATE_ERROR_EN | ||
480 | membar #Sync | ||
481 | |||
482 | /* Fetch and clear AFSR/AFAR */ | ||
483 | ldxa [%g0] ASI_AFSR, %g4 | ||
484 | ldxa [%g0] ASI_AFAR, %g5 | ||
485 | stxa %g4, [%g0] ASI_AFSR | ||
486 | membar #Sync | ||
487 | |||
488 | ba,pt %xcc, __cheetah_log_error | ||
489 | nop | ||
490 | .size cheetah_fast_ecc,.-cheetah_fast_ecc | ||
491 | |||
492 | .type c_fast_ecc,#function | ||
493 | c_fast_ecc: | ||
494 | rdpr %pil, %g2 | ||
495 | wrpr %g0, 15, %pil | ||
496 | ba,pt %xcc, etrap_irq | ||
497 | rd %pc, %g7 | ||
498 | #ifdef CONFIG_TRACE_IRQFLAGS | ||
499 | call trace_hardirqs_off | ||
500 | nop | ||
501 | #endif | ||
502 | mov %l4, %o1 | ||
503 | mov %l5, %o2 | ||
504 | call cheetah_fecc_handler | ||
505 | add %sp, PTREGS_OFF, %o0 | ||
506 | ba,a,pt %xcc, rtrap_irq | ||
507 | .size c_fast_ecc,.-c_fast_ecc | ||
508 | |||
509 | /* Our caller has disabled I-cache and performed membar Sync. */ | ||
510 | .globl cheetah_cee | ||
511 | .type cheetah_cee,#function | ||
512 | cheetah_cee: | ||
513 | ldxa [%g0] ASI_ESTATE_ERROR_EN, %g2 | ||
514 | andn %g2, ESTATE_ERROR_CEEN, %g2 | ||
515 | stxa %g2, [%g0] ASI_ESTATE_ERROR_EN | ||
516 | membar #Sync | ||
517 | |||
518 | /* Fetch and clear AFSR/AFAR */ | ||
519 | ldxa [%g0] ASI_AFSR, %g4 | ||
520 | ldxa [%g0] ASI_AFAR, %g5 | ||
521 | stxa %g4, [%g0] ASI_AFSR | ||
522 | membar #Sync | ||
523 | |||
524 | ba,pt %xcc, __cheetah_log_error | ||
525 | nop | ||
526 | .size cheetah_cee,.-cheetah_cee | ||
527 | |||
528 | .type c_cee,#function | ||
529 | c_cee: | ||
530 | rdpr %pil, %g2 | ||
531 | wrpr %g0, 15, %pil | ||
532 | ba,pt %xcc, etrap_irq | ||
533 | rd %pc, %g7 | ||
534 | #ifdef CONFIG_TRACE_IRQFLAGS | ||
535 | call trace_hardirqs_off | ||
536 | nop | ||
537 | #endif | ||
538 | mov %l4, %o1 | ||
539 | mov %l5, %o2 | ||
540 | call cheetah_cee_handler | ||
541 | add %sp, PTREGS_OFF, %o0 | ||
542 | ba,a,pt %xcc, rtrap_irq | ||
543 | .size c_cee,.-c_cee | ||
544 | |||
545 | /* Our caller has disabled I-cache+D-cache and performed membar Sync. */ | ||
546 | .globl cheetah_deferred_trap | ||
547 | .type cheetah_deferred_trap,#function | ||
548 | cheetah_deferred_trap: | ||
549 | ldxa [%g0] ASI_ESTATE_ERROR_EN, %g2 | ||
550 | andn %g2, ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN, %g2 | ||
551 | stxa %g2, [%g0] ASI_ESTATE_ERROR_EN | ||
552 | membar #Sync | ||
553 | |||
554 | /* Fetch and clear AFSR/AFAR */ | ||
555 | ldxa [%g0] ASI_AFSR, %g4 | ||
556 | ldxa [%g0] ASI_AFAR, %g5 | ||
557 | stxa %g4, [%g0] ASI_AFSR | ||
558 | membar #Sync | ||
559 | |||
560 | ba,pt %xcc, __cheetah_log_error | ||
561 | nop | ||
562 | .size cheetah_deferred_trap,.-cheetah_deferred_trap | ||
563 | |||
564 | .type c_deferred,#function | ||
565 | c_deferred: | ||
566 | rdpr %pil, %g2 | ||
567 | wrpr %g0, 15, %pil | ||
568 | ba,pt %xcc, etrap_irq | ||
569 | rd %pc, %g7 | ||
570 | #ifdef CONFIG_TRACE_IRQFLAGS | ||
571 | call trace_hardirqs_off | ||
572 | nop | ||
573 | #endif | ||
574 | mov %l4, %o1 | ||
575 | mov %l5, %o2 | ||
576 | call cheetah_deferred_handler | ||
577 | add %sp, PTREGS_OFF, %o0 | ||
578 | ba,a,pt %xcc, rtrap_irq | ||
579 | .size c_deferred,.-c_deferred | ||