1 /*
2 * linux/arch/alpha/kernel/err_marvel.c
3 *
4 * Copyright (C) 2001 Jeff Wiedemeier (Compaq Computer Corporation)
5 *
6 */
7
8 #include <linux/init.h>
9 #include <linux/pci.h>
10 #include <linux/sched.h>
11
12 #include <asm/io.h>
13 #include <asm/console.h>
14 #include <asm/core_marvel.h>
15 #include <asm/hwrpb.h>
16 #include <asm/smp.h>
17 #include <asm/err_common.h>
18 #include <asm/err_ev7.h>
19
20 #include "err_impl.h"
21 #include "proto.h"
22
23 static void
marvel_print_680_frame(struct ev7_lf_subpackets * lf_subpackets)24 marvel_print_680_frame(struct ev7_lf_subpackets *lf_subpackets)
25 {
26 #ifdef CONFIG_VERBOSE_MCHECK
27 struct ev7_pal_environmental_subpacket *env;
28 struct { int type; char *name; } ev_packets[] = {
29 { EL_TYPE__PAL__ENV__AMBIENT_TEMPERATURE,
30 "Ambient Temperature" },
31 { EL_TYPE__PAL__ENV__AIRMOVER_FAN,
32 "AirMover / Fan" },
33 { EL_TYPE__PAL__ENV__VOLTAGE,
34 "Voltage" },
35 { EL_TYPE__PAL__ENV__INTRUSION,
36 "Intrusion" },
37 { EL_TYPE__PAL__ENV__POWER_SUPPLY,
38 "Power Supply" },
39 { EL_TYPE__PAL__ENV__LAN,
40 "LAN" },
41 { EL_TYPE__PAL__ENV__HOT_PLUG,
42 "Hot Plug" },
43 { 0, NULL }
44 };
45 int i;
46
47 for (i = 0; ev_packets[i].type != 0; i++) {
48 env = lf_subpackets->env[ev7_lf_env_index(ev_packets[i].type)];
49 if (!env)
50 continue;
51
52 printk("%s**%s event (cabinet %d, drawer %d)\n",
53 err_print_prefix,
54 ev_packets[i].name,
55 env->cabinet,
56 env->drawer);
57 printk("%s Module Type: 0x%x - Unit ID 0x%x - "
58 "Condition 0x%x\n",
59 err_print_prefix,
60 env->module_type,
61 env->unit_id,
62 env->condition);
63 }
64 #endif /* CONFIG_VERBOSE_MCHECK */
65 }
66
67 static int
marvel_process_680_frame(struct ev7_lf_subpackets * lf_subpackets,int print)68 marvel_process_680_frame(struct ev7_lf_subpackets *lf_subpackets, int print)
69 {
70 int status = MCHK_DISPOSITION_UNKNOWN_ERROR;
71 int i;
72
73 for (i = ev7_lf_env_index(EL_TYPE__PAL__ENV__AMBIENT_TEMPERATURE);
74 i <= ev7_lf_env_index(EL_TYPE__PAL__ENV__HOT_PLUG);
75 i++) {
76 if (lf_subpackets->env[i])
77 status = MCHK_DISPOSITION_REPORT;
78 }
79
80 if (print)
81 marvel_print_680_frame(lf_subpackets);
82
83 return status;
84 }
85
86 #ifdef CONFIG_VERBOSE_MCHECK
87
88 static void
marvel_print_err_cyc(u64 err_cyc)89 marvel_print_err_cyc(u64 err_cyc)
90 {
91 static char *packet_desc[] = {
92 "No Error",
93 "UNKNOWN",
94 "1 cycle (1 or 2 flit packet)",
95 "2 cycles (3 flit packet)",
96 "9 cycles (18 flit packet)",
97 "10 cycles (19 flit packet)",
98 "UNKNOWN",
99 "UNKNOWN",
100 "UNKNOWN"
101 };
102
103 #define IO7__ERR_CYC__ODD_FLT (1UL << 0)
104 #define IO7__ERR_CYC__EVN_FLT (1UL << 1)
105 #define IO7__ERR_CYC__PACKET__S (6)
106 #define IO7__ERR_CYC__PACKET__M (0x7)
107 #define IO7__ERR_CYC__LOC (1UL << 5)
108 #define IO7__ERR_CYC__CYCLE__S (2)
109 #define IO7__ERR_CYC__CYCLE__M (0x7)
110
111 printk("%s Packet In Error: %s\n"
112 "%s Error in %s, cycle %lld%s%s\n",
113 err_print_prefix,
114 packet_desc[EXTRACT(err_cyc, IO7__ERR_CYC__PACKET)],
115 err_print_prefix,
116 (err_cyc & IO7__ERR_CYC__LOC) ? "DATA" : "HEADER",
117 EXTRACT(err_cyc, IO7__ERR_CYC__CYCLE),
118 (err_cyc & IO7__ERR_CYC__ODD_FLT) ? " [ODD Flit]": "",
119 (err_cyc & IO7__ERR_CYC__EVN_FLT) ? " [Even Flit]": "");
120 }
121
122 static void
marvel_print_po7_crrct_sym(u64 crrct_sym)123 marvel_print_po7_crrct_sym(u64 crrct_sym)
124 {
125 #define IO7__PO7_CRRCT_SYM__SYN__S (0)
126 #define IO7__PO7_CRRCT_SYM__SYN__M (0x7f)
127 #define IO7__PO7_CRRCT_SYM__ERR_CYC__S (7) /* ERR_CYC + ODD_FLT + EVN_FLT */
128 #define IO7__PO7_CRRCT_SYM__ERR_CYC__M (0x1ff)
129
130
131 printk("%s Correctable Error Symptoms:\n"
132 "%s Syndrome: 0x%llx\n",
133 err_print_prefix,
134 err_print_prefix, EXTRACT(crrct_sym, IO7__PO7_CRRCT_SYM__SYN));
135 marvel_print_err_cyc(EXTRACT(crrct_sym, IO7__PO7_CRRCT_SYM__ERR_CYC));
136 }
137
138 static void
marvel_print_po7_uncrr_sym(u64 uncrr_sym,u64 valid_mask)139 marvel_print_po7_uncrr_sym(u64 uncrr_sym, u64 valid_mask)
140 {
141 static char *clk_names[] = { "_h[0]", "_h[1]", "_n[0]", "_n[1]" };
142 static char *clk_decode[] = {
143 "No Error",
144 "One extra rising edge",
145 "Two extra rising edges",
146 "Lost one clock"
147 };
148 static char *port_names[] = { "Port 0", "Port 1",
149 "Port 2", "Port 3",
150 "Unknown Port", "Unknown Port",
151 "Unknown Port", "Port 7" };
152 int scratch, i;
153
154 #define IO7__PO7_UNCRR_SYM__SYN__S (0)
155 #define IO7__PO7_UNCRR_SYM__SYN__M (0x7f)
156 #define IO7__PO7_UNCRR_SYM__ERR_CYC__S (7) /* ERR_CYC + ODD_FLT... */
157 #define IO7__PO7_UNCRR_SYM__ERR_CYC__M (0x1ff) /* ... + EVN_FLT */
158 #define IO7__PO7_UNCRR_SYM__CLK__S (16)
159 #define IO7__PO7_UNCRR_SYM__CLK__M (0xff)
160 #define IO7__PO7_UNCRR_SYM__CDT_OVF_TO__REQ (1UL << 24)
161 #define IO7__PO7_UNCRR_SYM__CDT_OVF_TO__RIO (1UL << 25)
162 #define IO7__PO7_UNCRR_SYM__CDT_OVF_TO__WIO (1UL << 26)
163 #define IO7__PO7_UNCRR_SYM__CDT_OVF_TO__BLK (1UL << 27)
164 #define IO7__PO7_UNCRR_SYM__CDT_OVF_TO__NBK (1UL << 28)
165 #define IO7__PO7_UNCRR_SYM__OVF__READIO (1UL << 29)
166 #define IO7__PO7_UNCRR_SYM__OVF__WRITEIO (1UL << 30)
167 #define IO7__PO7_UNCRR_SYM__OVF__FWD (1UL << 31)
168 #define IO7__PO7_UNCRR_SYM__VICTIM_SP__S (32)
169 #define IO7__PO7_UNCRR_SYM__VICTIM_SP__M (0xff)
170 #define IO7__PO7_UNCRR_SYM__DETECT_SP__S (40)
171 #define IO7__PO7_UNCRR_SYM__DETECT_SP__M (0xff)
172 #define IO7__PO7_UNCRR_SYM__STRV_VTR__S (48)
173 #define IO7__PO7_UNCRR_SYM__STRV_VTR__M (0x3ff)
174
175 #define IO7__STRV_VTR__LSI__INTX__S (0)
176 #define IO7__STRV_VTR__LSI__INTX__M (0x3)
177 #define IO7__STRV_VTR__LSI__SLOT__S (2)
178 #define IO7__STRV_VTR__LSI__SLOT__M (0x7)
179 #define IO7__STRV_VTR__LSI__BUS__S (5)
180 #define IO7__STRV_VTR__LSI__BUS__M (0x3)
181 #define IO7__STRV_VTR__MSI__INTNUM__S (0)
182 #define IO7__STRV_VTR__MSI__INTNUM__M (0x1ff)
183 #define IO7__STRV_VTR__IS_MSI (1UL << 9)
184
185 printk("%s Uncorrectable Error Symptoms:\n", err_print_prefix);
186 uncrr_sym &= valid_mask;
187
188 if (EXTRACT(valid_mask, IO7__PO7_UNCRR_SYM__SYN))
189 printk("%s Syndrome: 0x%llx\n",
190 err_print_prefix,
191 EXTRACT(uncrr_sym, IO7__PO7_UNCRR_SYM__SYN));
192
193 if (EXTRACT(valid_mask, IO7__PO7_UNCRR_SYM__ERR_CYC))
194 marvel_print_err_cyc(EXTRACT(uncrr_sym,
195 IO7__PO7_UNCRR_SYM__ERR_CYC));
196
197 scratch = EXTRACT(uncrr_sym, IO7__PO7_UNCRR_SYM__CLK);
198 for (i = 0; i < 4; i++, scratch >>= 2) {
199 if (scratch & 0x3)
200 printk("%s Clock %s: %s\n",
201 err_print_prefix,
202 clk_names[i], clk_decode[scratch & 0x3]);
203 }
204
205 if (uncrr_sym & IO7__PO7_UNCRR_SYM__CDT_OVF_TO__REQ)
206 printk("%s REQ Credit Timeout or Overflow\n",
207 err_print_prefix);
208 if (uncrr_sym & IO7__PO7_UNCRR_SYM__CDT_OVF_TO__RIO)
209 printk("%s RIO Credit Timeout or Overflow\n",
210 err_print_prefix);
211 if (uncrr_sym & IO7__PO7_UNCRR_SYM__CDT_OVF_TO__WIO)
212 printk("%s WIO Credit Timeout or Overflow\n",
213 err_print_prefix);
214 if (uncrr_sym & IO7__PO7_UNCRR_SYM__CDT_OVF_TO__BLK)
215 printk("%s BLK Credit Timeout or Overflow\n",
216 err_print_prefix);
217 if (uncrr_sym & IO7__PO7_UNCRR_SYM__CDT_OVF_TO__NBK)
218 printk("%s NBK Credit Timeout or Overflow\n",
219 err_print_prefix);
220
221 if (uncrr_sym & IO7__PO7_UNCRR_SYM__OVF__READIO)
222 printk("%s Read I/O Buffer Overflow\n",
223 err_print_prefix);
224 if (uncrr_sym & IO7__PO7_UNCRR_SYM__OVF__WRITEIO)
225 printk("%s Write I/O Buffer Overflow\n",
226 err_print_prefix);
227 if (uncrr_sym & IO7__PO7_UNCRR_SYM__OVF__FWD)
228 printk("%s FWD Buffer Overflow\n",
229 err_print_prefix);
230
231 if ((scratch = EXTRACT(uncrr_sym, IO7__PO7_UNCRR_SYM__VICTIM_SP))) {
232 int lost = scratch & (1UL << 4);
233 scratch &= ~lost;
234 for (i = 0; i < 8; i++, scratch >>= 1) {
235 if (!(scratch & 1))
236 continue;
237 printk("%s Error Response sent to %s",
238 err_print_prefix, port_names[i]);
239 }
240 if (lost)
241 printk("%s Lost Error sent somewhere else\n",
242 err_print_prefix);
243 }
244
245 if ((scratch = EXTRACT(uncrr_sym, IO7__PO7_UNCRR_SYM__DETECT_SP))) {
246 for (i = 0; i < 8; i++, scratch >>= 1) {
247 if (!(scratch & 1))
248 continue;
249 printk("%s Error Reported by %s",
250 err_print_prefix, port_names[i]);
251 }
252 }
253
254 if (EXTRACT(valid_mask, IO7__PO7_UNCRR_SYM__STRV_VTR)) {
255 char starvation_message[80];
256
257 scratch = EXTRACT(uncrr_sym, IO7__PO7_UNCRR_SYM__STRV_VTR);
258 if (scratch & IO7__STRV_VTR__IS_MSI)
259 sprintf(starvation_message,
260 "MSI Interrupt 0x%x",
261 EXTRACT(scratch, IO7__STRV_VTR__MSI__INTNUM));
262 else
263 sprintf(starvation_message,
264 "LSI INT%c for Bus:Slot (%d:%d)\n",
265 'A' + EXTRACT(scratch,
266 IO7__STRV_VTR__LSI__INTX),
267 EXTRACT(scratch, IO7__STRV_VTR__LSI__BUS),
268 EXTRACT(scratch, IO7__STRV_VTR__LSI__SLOT));
269
270 printk("%s Starvation Int Trigger By: %s\n",
271 err_print_prefix, starvation_message);
272 }
273 }
274
275 static void
marvel_print_po7_ugbge_sym(u64 ugbge_sym)276 marvel_print_po7_ugbge_sym(u64 ugbge_sym)
277 {
278 char opcode_str[10];
279
280 #define IO7__PO7_UGBGE_SYM__UPH_PKT_OFF__S (6)
281 #define IO7__PO7_UGBGE_SYM__UPH_PKT_OFF__M (0xfffffffful)
282 #define IO7__PO7_UGBGE_SYM__UPH_OPCODE__S (40)
283 #define IO7__PO7_UGBGE_SYM__UPH_OPCODE__M (0xff)
284 #define IO7__PO7_UGBGE_SYM__UPH_SRC_PORT__S (48)
285 #define IO7__PO7_UGBGE_SYM__UPH_SRC_PORT__M (0xf)
286 #define IO7__PO7_UGBGE_SYM__UPH_DEST_PID__S (52)
287 #define IO7__PO7_UGBGE_SYM__UPH_DEST_PID__M (0x7ff)
288 #define IO7__PO7_UGBGE_SYM__VALID (1UL << 63)
289
290 if (!(ugbge_sym & IO7__PO7_UGBGE_SYM__VALID))
291 return;
292
293 switch(EXTRACT(ugbge_sym, IO7__PO7_UGBGE_SYM__UPH_OPCODE)) {
294 case 0x51:
295 sprintf(opcode_str, "Wr32");
296 break;
297 case 0x50:
298 sprintf(opcode_str, "WrQW");
299 break;
300 case 0x54:
301 sprintf(opcode_str, "WrIPR");
302 break;
303 case 0xD8:
304 sprintf(opcode_str, "Victim");
305 break;
306 case 0xC5:
307 sprintf(opcode_str, "BlkIO");
308 break;
309 default:
310 sprintf(opcode_str, "0x%llx\n",
311 EXTRACT(ugbge_sym, IO7__PO7_UGBGE_SYM__UPH_OPCODE));
312 break;
313 }
314
315 printk("%s Up Hose Garbage Symptom:\n"
316 "%s Source Port: %lld - Dest PID: %lld - OpCode: %s\n",
317 err_print_prefix,
318 err_print_prefix,
319 EXTRACT(ugbge_sym, IO7__PO7_UGBGE_SYM__UPH_SRC_PORT),
320 EXTRACT(ugbge_sym, IO7__PO7_UGBGE_SYM__UPH_DEST_PID),
321 opcode_str);
322
323 if (0xC5 != EXTRACT(ugbge_sym, IO7__PO7_UGBGE_SYM__UPH_OPCODE))
324 printk("%s Packet Offset 0x%08llx\n",
325 err_print_prefix,
326 EXTRACT(ugbge_sym, IO7__PO7_UGBGE_SYM__UPH_PKT_OFF));
327 }
328
329 static void
marvel_print_po7_err_sum(struct ev7_pal_io_subpacket * io)330 marvel_print_po7_err_sum(struct ev7_pal_io_subpacket *io)
331 {
332 u64 uncrr_sym_valid = 0;
333
334 #define IO7__PO7_ERRSUM__CR_SBE (1UL << 32)
335 #define IO7__PO7_ERRSUM__CR_SBE2 (1UL << 33)
336 #define IO7__PO7_ERRSUM__CR_PIO_WBYTE (1UL << 34)
337 #define IO7__PO7_ERRSUM__CR_CSR_NXM (1UL << 35)
338 #define IO7__PO7_ERRSUM__CR_RPID_ACV (1UL << 36)
339 #define IO7__PO7_ERRSUM__CR_RSP_NXM (1UL << 37)
340 #define IO7__PO7_ERRSUM__CR_ERR_RESP (1UL << 38)
341 #define IO7__PO7_ERRSUM__CR_CLK_DERR (1UL << 39)
342 #define IO7__PO7_ERRSUM__CR_DAT_DBE (1UL << 40)
343 #define IO7__PO7_ERRSUM__CR_DAT_GRBG (1UL << 41)
344 #define IO7__PO7_ERRSUM__MAF_TO (1UL << 42)
345 #define IO7__PO7_ERRSUM__UGBGE (1UL << 43)
346 #define IO7__PO7_ERRSUM__UN_MAF_LOST (1UL << 44)
347 #define IO7__PO7_ERRSUM__UN_PKT_OVF (1UL << 45)
348 #define IO7__PO7_ERRSUM__UN_CDT_OVF (1UL << 46)
349 #define IO7__PO7_ERRSUM__UN_DEALLOC (1UL << 47)
350 #define IO7__PO7_ERRSUM__BH_CDT_TO (1UL << 51)
351 #define IO7__PO7_ERRSUM__BH_CLK_HDR (1UL << 52)
352 #define IO7__PO7_ERRSUM__BH_DBE_HDR (1UL << 53)
353 #define IO7__PO7_ERRSUM__BH_GBG_HDR (1UL << 54)
354 #define IO7__PO7_ERRSUM__BH_BAD_CMD (1UL << 55)
355 #define IO7__PO7_ERRSUM__HLT_INT (1UL << 56)
356 #define IO7__PO7_ERRSUM__HP_INT (1UL << 57)
357 #define IO7__PO7_ERRSUM__CRD_INT (1UL << 58)
358 #define IO7__PO7_ERRSUM__STV_INT (1UL << 59)
359 #define IO7__PO7_ERRSUM__HRD_INT (1UL << 60)
360 #define IO7__PO7_ERRSUM__BH_SUM (1UL << 61)
361 #define IO7__PO7_ERRSUM__ERR_LST (1UL << 62)
362 #define IO7__PO7_ERRSUM__ERR_VALID (1UL << 63)
363
364 #define IO7__PO7_ERRSUM__ERR_MASK (IO7__PO7_ERRSUM__ERR_VALID | \
365 IO7__PO7_ERRSUM__CR_SBE)
366
367 /*
368 * Single bit errors aren't covered by ERR_VALID.
369 */
370 if (io->po7_error_sum & IO7__PO7_ERRSUM__CR_SBE) {
371 printk("%s %sSingle Bit Error(s) detected/corrected\n",
372 err_print_prefix,
373 (io->po7_error_sum & IO7__PO7_ERRSUM__CR_SBE2)
374 ? "Multiple " : "");
375 marvel_print_po7_crrct_sym(io->po7_crrct_sym);
376 }
377
378 /*
379 * Neither are the interrupt status bits
380 */
381 if (io->po7_error_sum & IO7__PO7_ERRSUM__HLT_INT)
382 printk("%s Halt Interrupt posted", err_print_prefix);
383 if (io->po7_error_sum & IO7__PO7_ERRSUM__HP_INT) {
384 printk("%s Hot Plug Event Interrupt posted",
385 err_print_prefix);
386 uncrr_sym_valid |= GEN_MASK(IO7__PO7_UNCRR_SYM__DETECT_SP);
387 }
388 if (io->po7_error_sum & IO7__PO7_ERRSUM__CRD_INT)
389 printk("%s Correctable Error Interrupt posted",
390 err_print_prefix);
391 if (io->po7_error_sum & IO7__PO7_ERRSUM__STV_INT) {
392 printk("%s Starvation Interrupt posted", err_print_prefix);
393 uncrr_sym_valid |= GEN_MASK(IO7__PO7_UNCRR_SYM__STRV_VTR);
394 }
395 if (io->po7_error_sum & IO7__PO7_ERRSUM__HRD_INT) {
396 printk("%s Hard Error Interrupt posted", err_print_prefix);
397 uncrr_sym_valid |= GEN_MASK(IO7__PO7_UNCRR_SYM__DETECT_SP);
398 }
399
400 /*
401 * Everything else is valid only with ERR_VALID, so skip to the end
402 * (uncrr_sym check) unless ERR_VALID is set.
403 */
404 if (!(io->po7_error_sum & IO7__PO7_ERRSUM__ERR_VALID))
405 goto check_uncrr_sym;
406
407 /*
408 * Since ERR_VALID is set, VICTIM_SP in uncrr_sym is valid.
409 * For bits [29:0] to also be valid, the following bits must
410 * not be set:
411 * CR_PIO_WBYTE CR_CSR_NXM CR_RSP_NXM
412 * CR_ERR_RESP MAF_TO
413 */
414 uncrr_sym_valid |= GEN_MASK(IO7__PO7_UNCRR_SYM__VICTIM_SP);
415 if (!(io->po7_error_sum & (IO7__PO7_ERRSUM__CR_PIO_WBYTE |
416 IO7__PO7_ERRSUM__CR_CSR_NXM |
417 IO7__PO7_ERRSUM__CR_RSP_NXM |
418 IO7__PO7_ERRSUM__CR_ERR_RESP |
419 IO7__PO7_ERRSUM__MAF_TO)))
420 uncrr_sym_valid |= 0x3ffffffful;
421
422 if (io->po7_error_sum & IO7__PO7_ERRSUM__CR_PIO_WBYTE)
423 printk("%s Write byte into IO7 CSR\n", err_print_prefix);
424 if (io->po7_error_sum & IO7__PO7_ERRSUM__CR_CSR_NXM)
425 printk("%s PIO to non-existent CSR\n", err_print_prefix);
426 if (io->po7_error_sum & IO7__PO7_ERRSUM__CR_RPID_ACV)
427 printk("%s Bus Requester PID (Access Violation)\n",
428 err_print_prefix);
429 if (io->po7_error_sum & IO7__PO7_ERRSUM__CR_RSP_NXM)
430 printk("%s Received NXM response from EV7\n",
431 err_print_prefix);
432 if (io->po7_error_sum & IO7__PO7_ERRSUM__CR_ERR_RESP)
433 printk("%s Received ERROR RESPONSE\n", err_print_prefix);
434 if (io->po7_error_sum & IO7__PO7_ERRSUM__CR_CLK_DERR)
435 printk("%s Clock error on data flit\n", err_print_prefix);
436 if (io->po7_error_sum & IO7__PO7_ERRSUM__CR_DAT_DBE)
437 printk("%s Double Bit Error Data Error Detected\n",
438 err_print_prefix);
439 if (io->po7_error_sum & IO7__PO7_ERRSUM__CR_DAT_GRBG)
440 printk("%s Garbage Encoding Detected on the data\n",
441 err_print_prefix);
442 if (io->po7_error_sum & IO7__PO7_ERRSUM__UGBGE) {
443 printk("%s Garbage Encoding sent up hose\n",
444 err_print_prefix);
445 marvel_print_po7_ugbge_sym(io->po7_ugbge_sym);
446 }
447 if (io->po7_error_sum & IO7__PO7_ERRSUM__UN_MAF_LOST)
448 printk("%s Orphan response (unexpected response)\n",
449 err_print_prefix);
450 if (io->po7_error_sum & IO7__PO7_ERRSUM__UN_PKT_OVF)
451 printk("%s Down hose packet overflow\n", err_print_prefix);
452 if (io->po7_error_sum & IO7__PO7_ERRSUM__UN_CDT_OVF)
453 printk("%s Down hose credit overflow\n", err_print_prefix);
454 if (io->po7_error_sum & IO7__PO7_ERRSUM__UN_DEALLOC)
455 printk("%s Unexpected or bad dealloc field\n",
456 err_print_prefix);
457
458 /*
459 * The black hole events.
460 */
461 if (io->po7_error_sum & IO7__PO7_ERRSUM__MAF_TO)
462 printk("%s BLACK HOLE: Timeout for all responses\n",
463 err_print_prefix);
464 if (io->po7_error_sum & IO7__PO7_ERRSUM__BH_CDT_TO)
465 printk("%s BLACK HOLE: Credit Timeout\n", err_print_prefix);
466 if (io->po7_error_sum & IO7__PO7_ERRSUM__BH_CLK_HDR)
467 printk("%s BLACK HOLE: Clock check on header\n",
468 err_print_prefix);
469 if (io->po7_error_sum & IO7__PO7_ERRSUM__BH_DBE_HDR)
470 printk("%s BLACK HOLE: Uncorrectable Error on header\n",
471 err_print_prefix);
472 if (io->po7_error_sum & IO7__PO7_ERRSUM__BH_GBG_HDR)
473 printk("%s BLACK HOLE: Garbage on header\n",
474 err_print_prefix);
475 if (io->po7_error_sum & IO7__PO7_ERRSUM__BH_BAD_CMD)
476 printk("%s BLACK HOLE: Bad EV7 command\n",
477 err_print_prefix);
478
479 if (io->po7_error_sum & IO7__PO7_ERRSUM__ERR_LST)
480 printk("%s Lost Error\n", err_print_prefix);
481
482 printk("%s Failing Packet:\n"
483 "%s Cycle 1: %016llx\n"
484 "%s Cycle 2: %016llx\n",
485 err_print_prefix,
486 err_print_prefix, io->po7_err_pkt0,
487 err_print_prefix, io->po7_err_pkt1);
488 /*
489 * If there are any valid bits in UNCRR sym for this err,
490 * print UNCRR_SYM as well.
491 */
492 check_uncrr_sym:
493 if (uncrr_sym_valid)
494 marvel_print_po7_uncrr_sym(io->po7_uncrr_sym, uncrr_sym_valid);
495 }
496
497 static void
marvel_print_pox_tlb_err(u64 tlb_err)498 marvel_print_pox_tlb_err(u64 tlb_err)
499 {
500 static char *tlb_errors[] = {
501 "No Error",
502 "North Port Signaled Error fetching TLB entry",
503 "PTE invalid or UCC or GBG error on this entry",
504 "Address did not hit any DMA window"
505 };
506
507 #define IO7__POX_TLBERR__ERR_VALID (1UL << 63)
508 #define IO7__POX_TLBERR__ERRCODE__S (0)
509 #define IO7__POX_TLBERR__ERRCODE__M (0x3)
510 #define IO7__POX_TLBERR__ERR_TLB_PTR__S (3)
511 #define IO7__POX_TLBERR__ERR_TLB_PTR__M (0x7)
512 #define IO7__POX_TLBERR__FADDR__S (6)
513 #define IO7__POX_TLBERR__FADDR__M (0x3fffffffffful)
514
515 if (!(tlb_err & IO7__POX_TLBERR__ERR_VALID))
516 return;
517
518 printk("%s TLB Error on index 0x%llx:\n"
519 "%s - %s\n"
520 "%s - Addr: 0x%016llx\n",
521 err_print_prefix,
522 EXTRACT(tlb_err, IO7__POX_TLBERR__ERR_TLB_PTR),
523 err_print_prefix,
524 tlb_errors[EXTRACT(tlb_err, IO7__POX_TLBERR__ERRCODE)],
525 err_print_prefix,
526 EXTRACT(tlb_err, IO7__POX_TLBERR__FADDR) << 6);
527 }
528
529 static void
marvel_print_pox_spl_cmplt(u64 spl_cmplt)530 marvel_print_pox_spl_cmplt(u64 spl_cmplt)
531 {
532 char message[80];
533
534 #define IO7__POX_SPLCMPLT__MESSAGE__S (0)
535 #define IO7__POX_SPLCMPLT__MESSAGE__M (0x0fffffffful)
536 #define IO7__POX_SPLCMPLT__SOURCE_BUS__S (40)
537 #define IO7__POX_SPLCMPLT__SOURCE_BUS__M (0xfful)
538 #define IO7__POX_SPLCMPLT__SOURCE_DEV__S (35)
539 #define IO7__POX_SPLCMPLT__SOURCE_DEV__M (0x1ful)
540 #define IO7__POX_SPLCMPLT__SOURCE_FUNC__S (32)
541 #define IO7__POX_SPLCMPLT__SOURCE_FUNC__M (0x07ul)
542
543 #define IO7__POX_SPLCMPLT__MSG_CLASS__S (28)
544 #define IO7__POX_SPLCMPLT__MSG_CLASS__M (0xf)
545 #define IO7__POX_SPLCMPLT__MSG_INDEX__S (20)
546 #define IO7__POX_SPLCMPLT__MSG_INDEX__M (0xff)
547 #define IO7__POX_SPLCMPLT__MSG_CLASSINDEX__S (20)
548 #define IO7__POX_SPLCMPLT__MSG_CLASSINDEX__M (0xfff)
549 #define IO7__POX_SPLCMPLT__REM_LOWER_ADDR__S (12)
550 #define IO7__POX_SPLCMPLT__REM_LOWER_ADDR__M (0x7f)
551 #define IO7__POX_SPLCMPLT__REM_BYTE_COUNT__S (0)
552 #define IO7__POX_SPLCMPLT__REM_BYTE_COUNT__M (0xfff)
553
554 printk("%s Split Completion Error:\n"
555 "%s Source (Bus:Dev:Func): %lld:%lld:%lld\n",
556 err_print_prefix,
557 err_print_prefix,
558 EXTRACT(spl_cmplt, IO7__POX_SPLCMPLT__SOURCE_BUS),
559 EXTRACT(spl_cmplt, IO7__POX_SPLCMPLT__SOURCE_DEV),
560 EXTRACT(spl_cmplt, IO7__POX_SPLCMPLT__SOURCE_FUNC));
561
562 switch(EXTRACT(spl_cmplt, IO7__POX_SPLCMPLT__MSG_CLASSINDEX)) {
563 case 0x000:
564 sprintf(message, "Normal completion");
565 break;
566 case 0x100:
567 sprintf(message, "Bridge - Master Abort");
568 break;
569 case 0x101:
570 sprintf(message, "Bridge - Target Abort");
571 break;
572 case 0x102:
573 sprintf(message, "Bridge - Uncorrectable Write Data Error");
574 break;
575 case 0x200:
576 sprintf(message, "Byte Count Out of Range");
577 break;
578 case 0x201:
579 sprintf(message, "Uncorrectable Split Write Data Error");
580 break;
581 default:
582 sprintf(message, "%08llx\n",
583 EXTRACT(spl_cmplt, IO7__POX_SPLCMPLT__MESSAGE));
584 break;
585 }
586 printk("%s Message: %s\n", err_print_prefix, message);
587 }
588
589 static void
marvel_print_pox_trans_sum(u64 trans_sum)590 marvel_print_pox_trans_sum(u64 trans_sum)
591 {
592 static const char * const pcix_cmd[] = {
593 "Interrupt Acknowledge",
594 "Special Cycle",
595 "I/O Read",
596 "I/O Write",
597 "Reserved",
598 "Reserved / Device ID Message",
599 "Memory Read",
600 "Memory Write",
601 "Reserved / Alias to Memory Read Block",
602 "Reserved / Alias to Memory Write Block",
603 "Configuration Read",
604 "Configuration Write",
605 "Memory Read Multiple / Split Completion",
606 "Dual Address Cycle",
607 "Memory Read Line / Memory Read Block",
608 "Memory Write and Invalidate / Memory Write Block"
609 };
610
611 #define IO7__POX_TRANSUM__PCI_ADDR__S (0)
612 #define IO7__POX_TRANSUM__PCI_ADDR__M (0x3fffffffffffful)
613 #define IO7__POX_TRANSUM__DAC (1UL << 50)
614 #define IO7__POX_TRANSUM__PCIX_MASTER_SLOT__S (52)
615 #define IO7__POX_TRANSUM__PCIX_MASTER_SLOT__M (0xf)
616 #define IO7__POX_TRANSUM__PCIX_CMD__S (56)
617 #define IO7__POX_TRANSUM__PCIX_CMD__M (0xf)
618 #define IO7__POX_TRANSUM__ERR_VALID (1UL << 63)
619
620 if (!(trans_sum & IO7__POX_TRANSUM__ERR_VALID))
621 return;
622
623 printk("%s Transaction Summary:\n"
624 "%s Command: 0x%llx - %s\n"
625 "%s Address: 0x%016llx%s\n"
626 "%s PCI-X Master Slot: 0x%llx\n",
627 err_print_prefix,
628 err_print_prefix,
629 EXTRACT(trans_sum, IO7__POX_TRANSUM__PCIX_CMD),
630 pcix_cmd[EXTRACT(trans_sum, IO7__POX_TRANSUM__PCIX_CMD)],
631 err_print_prefix,
632 EXTRACT(trans_sum, IO7__POX_TRANSUM__PCI_ADDR),
633 (trans_sum & IO7__POX_TRANSUM__DAC) ? " (DAC)" : "",
634 err_print_prefix,
635 EXTRACT(trans_sum, IO7__POX_TRANSUM__PCIX_MASTER_SLOT));
636 }
637
638 static void
marvel_print_pox_err(u64 err_sum,struct ev7_pal_io_one_port * port)639 marvel_print_pox_err(u64 err_sum, struct ev7_pal_io_one_port *port)
640 {
641 #define IO7__POX_ERRSUM__AGP_REQQ_OVFL (1UL << 4)
642 #define IO7__POX_ERRSUM__AGP_SYNC_ERR (1UL << 5)
643 #define IO7__POX_ERRSUM__MRETRY_TO (1UL << 6)
644 #define IO7__POX_ERRSUM__PCIX_UX_SPL (1UL << 7)
645 #define IO7__POX_ERRSUM__PCIX_SPLIT_TO (1UL << 8)
646 #define IO7__POX_ERRSUM__PCIX_DISCARD_SPL (1UL << 9)
647 #define IO7__POX_ERRSUM__DMA_RD_TO (1UL << 10)
648 #define IO7__POX_ERRSUM__CSR_NXM_RD (1UL << 11)
649 #define IO7__POX_ERRSUM__CSR_NXM_WR (1UL << 12)
650 #define IO7__POX_ERRSUM__DMA_TO (1UL << 13)
651 #define IO7__POX_ERRSUM__ALL_MABORTS (1UL << 14)
652 #define IO7__POX_ERRSUM__MABORT (1UL << 15)
653 #define IO7__POX_ERRSUM__MABORT_MASK (IO7__POX_ERRSUM__ALL_MABORTS|\
654 IO7__POX_ERRSUM__MABORT)
655 #define IO7__POX_ERRSUM__PT_TABORT (1UL << 16)
656 #define IO7__POX_ERRSUM__PM_TABORT (1UL << 17)
657 #define IO7__POX_ERRSUM__TABORT_MASK (IO7__POX_ERRSUM__PT_TABORT | \
658 IO7__POX_ERRSUM__PM_TABORT)
659 #define IO7__POX_ERRSUM__SERR (1UL << 18)
660 #define IO7__POX_ERRSUM__ADDRERR_STB (1UL << 19)
661 #define IO7__POX_ERRSUM__DETECTED_SERR (1UL << 20)
662 #define IO7__POX_ERRSUM__PERR (1UL << 21)
663 #define IO7__POX_ERRSUM__DATAERR_STB_NIOW (1UL << 22)
664 #define IO7__POX_ERRSUM__DETECTED_PERR (1UL << 23)
665 #define IO7__POX_ERRSUM__PM_PERR (1UL << 24)
666 #define IO7__POX_ERRSUM__PT_SCERROR (1UL << 26)
667 #define IO7__POX_ERRSUM__HUNG_BUS (1UL << 28)
668 #define IO7__POX_ERRSUM__UPE_ERROR__S (51)
669 #define IO7__POX_ERRSUM__UPE_ERROR__M (0xffUL)
670 #define IO7__POX_ERRSUM__UPE_ERROR GEN_MASK(IO7__POX_ERRSUM__UPE_ERROR)
671 #define IO7__POX_ERRSUM__TLB_ERR (1UL << 59)
672 #define IO7__POX_ERRSUM__ERR_VALID (1UL << 63)
673
674 #define IO7__POX_ERRSUM__TRANS_SUM__MASK (IO7__POX_ERRSUM__MRETRY_TO | \
675 IO7__POX_ERRSUM__PCIX_UX_SPL | \
676 IO7__POX_ERRSUM__PCIX_SPLIT_TO | \
677 IO7__POX_ERRSUM__DMA_TO | \
678 IO7__POX_ERRSUM__MABORT_MASK | \
679 IO7__POX_ERRSUM__TABORT_MASK | \
680 IO7__POX_ERRSUM__SERR | \
681 IO7__POX_ERRSUM__ADDRERR_STB | \
682 IO7__POX_ERRSUM__PERR | \
683 IO7__POX_ERRSUM__DATAERR_STB_NIOW |\
684 IO7__POX_ERRSUM__DETECTED_PERR | \
685 IO7__POX_ERRSUM__PM_PERR | \
686 IO7__POX_ERRSUM__PT_SCERROR | \
687 IO7__POX_ERRSUM__UPE_ERROR)
688
689 if (!(err_sum & IO7__POX_ERRSUM__ERR_VALID))
690 return;
691
692 /*
693 * First the transaction summary errors
694 */
695 if (err_sum & IO7__POX_ERRSUM__MRETRY_TO)
696 printk("%s IO7 Master Retry Timeout expired\n",
697 err_print_prefix);
698 if (err_sum & IO7__POX_ERRSUM__PCIX_UX_SPL)
699 printk("%s Unexpected Split Completion\n",
700 err_print_prefix);
701 if (err_sum & IO7__POX_ERRSUM__PCIX_SPLIT_TO)
702 printk("%s IO7 Split Completion Timeout expired\n",
703 err_print_prefix);
704 if (err_sum & IO7__POX_ERRSUM__DMA_TO)
705 printk("%s Hung bus during DMA transaction\n",
706 err_print_prefix);
707 if (err_sum & IO7__POX_ERRSUM__MABORT_MASK)
708 printk("%s Master Abort\n", err_print_prefix);
709 if (err_sum & IO7__POX_ERRSUM__PT_TABORT)
710 printk("%s IO7 Asserted Target Abort\n", err_print_prefix);
711 if (err_sum & IO7__POX_ERRSUM__PM_TABORT)
712 printk("%s IO7 Received Target Abort\n", err_print_prefix);
713 if (err_sum & IO7__POX_ERRSUM__ADDRERR_STB) {
714 printk("%s Address or PCI-X Attribute Parity Error\n",
715 err_print_prefix);
716 if (err_sum & IO7__POX_ERRSUM__SERR)
717 printk("%s IO7 Asserted SERR\n", err_print_prefix);
718 }
719 if (err_sum & IO7__POX_ERRSUM__PERR) {
720 if (err_sum & IO7__POX_ERRSUM__DATAERR_STB_NIOW)
721 printk("%s IO7 Detected Data Parity Error\n",
722 err_print_prefix);
723 else
724 printk("%s Split Completion Response with "
725 "Parity Error\n", err_print_prefix);
726 }
727 if (err_sum & IO7__POX_ERRSUM__DETECTED_PERR)
728 printk("%s PERR detected\n", err_print_prefix);
729 if (err_sum & IO7__POX_ERRSUM__PM_PERR)
730 printk("%s PERR while IO7 is master\n", err_print_prefix);
731 if (err_sum & IO7__POX_ERRSUM__PT_SCERROR) {
732 printk("%s IO7 Received Split Completion Error message\n",
733 err_print_prefix);
734 marvel_print_pox_spl_cmplt(port->pox_spl_cmplt);
735 }
736 if (err_sum & IO7__POX_ERRSUM__UPE_ERROR) {
737 unsigned int upe_error = EXTRACT(err_sum,
738 IO7__POX_ERRSUM__UPE_ERROR);
739 int i;
740 static char *upe_errors[] = {
741 "Parity Error on MSI write data",
742 "MSI read (MSI window is write only",
743 "TLB - Invalid WR transaction",
744 "TLB - Invalid RD transaction",
745 "DMA - WR error (see north port)",
746 "DMA - RD error (see north port)",
747 "PPR - WR error (see north port)",
748 "PPR - RD error (see north port)"
749 };
750
751 printk("%s UPE Error:\n", err_print_prefix);
752 for (i = 0; i < 8; i++) {
753 if (upe_error & (1 << i))
754 printk("%s %s\n", err_print_prefix,
755 upe_errors[i]);
756 }
757 }
758
759 /*
760 * POx_TRANS_SUM, if appropriate.
761 */
762 if (err_sum & IO7__POX_ERRSUM__TRANS_SUM__MASK)
763 marvel_print_pox_trans_sum(port->pox_trans_sum);
764
765 /*
766 * Then TLB_ERR.
767 */
768 if (err_sum & IO7__POX_ERRSUM__TLB_ERR) {
769 printk("%s TLB ERROR\n", err_print_prefix);
770 marvel_print_pox_tlb_err(port->pox_tlb_err);
771 }
772
773 /*
774 * And the single bit status errors.
775 */
776 if (err_sum & IO7__POX_ERRSUM__AGP_REQQ_OVFL)
777 printk("%s AGP Request Queue Overflow\n", err_print_prefix);
778 if (err_sum & IO7__POX_ERRSUM__AGP_SYNC_ERR)
779 printk("%s AGP Sync Error\n", err_print_prefix);
780 if (err_sum & IO7__POX_ERRSUM__PCIX_DISCARD_SPL)
781 printk("%s Discarded split completion\n", err_print_prefix);
782 if (err_sum & IO7__POX_ERRSUM__DMA_RD_TO)
783 printk("%s DMA Read Timeout\n", err_print_prefix);
784 if (err_sum & IO7__POX_ERRSUM__CSR_NXM_RD)
785 printk("%s CSR NXM READ\n", err_print_prefix);
786 if (err_sum & IO7__POX_ERRSUM__CSR_NXM_WR)
787 printk("%s CSR NXM WRITE\n", err_print_prefix);
788 if (err_sum & IO7__POX_ERRSUM__DETECTED_SERR)
789 printk("%s SERR detected\n", err_print_prefix);
790 if (err_sum & IO7__POX_ERRSUM__HUNG_BUS)
791 printk("%s HUNG BUS detected\n", err_print_prefix);
792 }
793
794 #endif /* CONFIG_VERBOSE_MCHECK */
795
796 static struct ev7_pal_io_subpacket *
marvel_find_io7_with_error(struct ev7_lf_subpackets * lf_subpackets)797 marvel_find_io7_with_error(struct ev7_lf_subpackets *lf_subpackets)
798 {
799 struct ev7_pal_io_subpacket *io = lf_subpackets->io;
800 struct io7 *io7;
801 int i;
802
803 /*
804 * Caller must provide the packet to fill
805 */
806 if (!io)
807 return NULL;
808
809 /*
810 * Fill the subpacket with the console's standard fill pattern
811 */
812 memset(io, 0x55, sizeof(*io));
813
814 for (io7 = NULL; NULL != (io7 = marvel_next_io7(io7)); ) {
815 unsigned long err_sum = 0;
816
817 err_sum |= io7->csrs->PO7_ERROR_SUM.csr;
818 for (i = 0; i < IO7_NUM_PORTS; i++) {
819 if (!io7->ports[i].enabled)
820 continue;
821 err_sum |= io7->ports[i].csrs->POx_ERR_SUM.csr;
822 }
823
824 /*
825 * Is there at least one error?
826 */
827 if (err_sum & (1UL << 63))
828 break;
829 }
830
831 /*
832 * Did we find an IO7 with an error?
833 */
834 if (!io7)
835 return NULL;
836
837 /*
838 * We have an IO7 with an error.
839 *
840 * Fill in the IO subpacket.
841 */
842 io->io_asic_rev = io7->csrs->IO_ASIC_REV.csr;
843 io->io_sys_rev = io7->csrs->IO_SYS_REV.csr;
844 io->io7_uph = io7->csrs->IO7_UPH.csr;
845 io->hpi_ctl = io7->csrs->HPI_CTL.csr;
846 io->crd_ctl = io7->csrs->CRD_CTL.csr;
847 io->hei_ctl = io7->csrs->HEI_CTL.csr;
848 io->po7_error_sum = io7->csrs->PO7_ERROR_SUM.csr;
849 io->po7_uncrr_sym = io7->csrs->PO7_UNCRR_SYM.csr;
850 io->po7_crrct_sym = io7->csrs->PO7_CRRCT_SYM.csr;
851 io->po7_ugbge_sym = io7->csrs->PO7_UGBGE_SYM.csr;
852 io->po7_err_pkt0 = io7->csrs->PO7_ERR_PKT[0].csr;
853 io->po7_err_pkt1 = io7->csrs->PO7_ERR_PKT[1].csr;
854
855 for (i = 0; i < IO7_NUM_PORTS; i++) {
856 io7_ioport_csrs *csrs = io7->ports[i].csrs;
857
858 if (!io7->ports[i].enabled)
859 continue;
860
861 io->ports[i].pox_err_sum = csrs->POx_ERR_SUM.csr;
862 io->ports[i].pox_tlb_err = csrs->POx_TLB_ERR.csr;
863 io->ports[i].pox_spl_cmplt = csrs->POx_SPL_COMPLT.csr;
864 io->ports[i].pox_trans_sum = csrs->POx_TRANS_SUM.csr;
865 io->ports[i].pox_first_err = csrs->POx_FIRST_ERR.csr;
866 io->ports[i].pox_mult_err = csrs->POx_MULT_ERR.csr;
867 io->ports[i].pox_dm_source = csrs->POx_DM_SOURCE.csr;
868 io->ports[i].pox_dm_dest = csrs->POx_DM_DEST.csr;
869 io->ports[i].pox_dm_size = csrs->POx_DM_SIZE.csr;
870 io->ports[i].pox_dm_ctrl = csrs->POx_DM_CTRL.csr;
871
872 /*
873 * Ack this port's errors, if any. POx_ERR_SUM must be last.
874 *
875 * Most of the error registers get cleared and unlocked when
876 * the associated bits in POx_ERR_SUM are cleared (by writing
877 * 1). POx_TLB_ERR is an exception and must be explicitly
878 * cleared.
879 */
880 csrs->POx_TLB_ERR.csr = io->ports[i].pox_tlb_err;
881 csrs->POx_ERR_SUM.csr = io->ports[i].pox_err_sum;
882 mb();
883 csrs->POx_ERR_SUM.csr;
884 }
885
886 /*
887 * Ack any port 7 error(s).
888 */
889 io7->csrs->PO7_ERROR_SUM.csr = io->po7_error_sum;
890 mb();
891 io7->csrs->PO7_ERROR_SUM.csr;
892
893 /*
894 * Correct the io7_pid.
895 */
896 lf_subpackets->io_pid = io7->pe;
897
898 return io;
899 }
900
901 static int
marvel_process_io_error(struct ev7_lf_subpackets * lf_subpackets,int print)902 marvel_process_io_error(struct ev7_lf_subpackets *lf_subpackets, int print)
903 {
904 int status = MCHK_DISPOSITION_UNKNOWN_ERROR;
905
906 #ifdef CONFIG_VERBOSE_MCHECK
907 struct ev7_pal_io_subpacket *io = lf_subpackets->io;
908 int i;
909 #endif /* CONFIG_VERBOSE_MCHECK */
910
911 #define MARVEL_IO_ERR_VALID(x) ((x) & (1UL << 63))
912
913 if (!lf_subpackets->logout || !lf_subpackets->io)
914 return status;
915
916 /*
917 * The PALcode only builds an IO subpacket if there is a
918 * locally connected IO7. In the cases of
919 * 1) a uniprocessor kernel
920 * 2) an mp kernel before the local secondary has called in
921 * error interrupts are all directed to the primary processor.
922 * In that case, we may not have an IO subpacket at all and, event
923 * if we do, it may not be the right now.
924 *
925 * If the RBOX indicates an I/O error interrupt, make sure we have
926 * the correct IO7 information. If we don't have an IO subpacket
927 * or it's the wrong one, try to find the right one.
928 *
929 * RBOX I/O error interrupts are indicated by RBOX_INT<29> and
930 * RBOX_INT<10>.
931 */
932 if ((lf_subpackets->io->po7_error_sum & (1UL << 32)) ||
933 ((lf_subpackets->io->po7_error_sum |
934 lf_subpackets->io->ports[0].pox_err_sum |
935 lf_subpackets->io->ports[1].pox_err_sum |
936 lf_subpackets->io->ports[2].pox_err_sum |
937 lf_subpackets->io->ports[3].pox_err_sum) & (1UL << 63))) {
938 /*
939 * Either we have no IO subpacket or no error is
940 * indicated in the one we do have. Try find the
941 * one with the error.
942 */
943 if (!marvel_find_io7_with_error(lf_subpackets))
944 return status;
945 }
946
947 /*
948 * We have an IO7 indicating an error - we're going to report it
949 */
950 status = MCHK_DISPOSITION_REPORT;
951
952 #ifdef CONFIG_VERBOSE_MCHECK
953
954 if (!print)
955 return status;
956
957 printk("%s*Error occurred on IO7 at PID %u\n",
958 err_print_prefix, lf_subpackets->io_pid);
959
960 /*
961 * Check port 7 first
962 */
963 if (lf_subpackets->io->po7_error_sum & IO7__PO7_ERRSUM__ERR_MASK) {
964 marvel_print_po7_err_sum(io);
965
966 #if 0
967 printk("%s PORT 7 ERROR:\n"
968 "%s PO7_ERROR_SUM: %016llx\n"
969 "%s PO7_UNCRR_SYM: %016llx\n"
970 "%s PO7_CRRCT_SYM: %016llx\n"
971 "%s PO7_UGBGE_SYM: %016llx\n"
972 "%s PO7_ERR_PKT0: %016llx\n"
973 "%s PO7_ERR_PKT1: %016llx\n",
974 err_print_prefix,
975 err_print_prefix, io->po7_error_sum,
976 err_print_prefix, io->po7_uncrr_sym,
977 err_print_prefix, io->po7_crrct_sym,
978 err_print_prefix, io->po7_ugbge_sym,
979 err_print_prefix, io->po7_err_pkt0,
980 err_print_prefix, io->po7_err_pkt1);
981 #endif
982 }
983
984 /*
985 * Then loop through the ports
986 */
987 for (i = 0; i < IO7_NUM_PORTS; i++) {
988 if (!MARVEL_IO_ERR_VALID(io->ports[i].pox_err_sum))
989 continue;
990
991 printk("%s PID %u PORT %d POx_ERR_SUM: %016llx\n",
992 err_print_prefix,
993 lf_subpackets->io_pid, i, io->ports[i].pox_err_sum);
994 marvel_print_pox_err(io->ports[i].pox_err_sum, &io->ports[i]);
995
996 printk("%s [ POx_FIRST_ERR: %016llx ]\n",
997 err_print_prefix, io->ports[i].pox_first_err);
998 marvel_print_pox_err(io->ports[i].pox_first_err,
999 &io->ports[i]);
1000
1001 }
1002
1003
1004 #endif /* CONFIG_VERBOSE_MCHECK */
1005
1006 return status;
1007 }
1008
1009 static int
marvel_process_logout_frame(struct ev7_lf_subpackets * lf_subpackets,int print)1010 marvel_process_logout_frame(struct ev7_lf_subpackets *lf_subpackets, int print)
1011 {
1012 int status = MCHK_DISPOSITION_UNKNOWN_ERROR;
1013
1014 /*
1015 * I/O error?
1016 */
1017 #define EV7__RBOX_INT__IO_ERROR__MASK 0x20000400ul
1018 if (lf_subpackets->logout &&
1019 (lf_subpackets->logout->rbox_int & 0x20000400ul))
1020 status = marvel_process_io_error(lf_subpackets, print);
1021
1022 /*
1023 * Probing behind PCI-X bridges can cause machine checks on
1024 * Marvel when the probe is handled by the bridge as a split
1025 * completion transaction. The symptom is an ERROR_RESPONSE
1026 * to a CONFIG address. Since these errors will happen in
1027 * normal operation, dismiss them.
1028 *
1029 * Dismiss if:
1030 * C_STAT = 0x14 (Error Response)
1031 * C_STS<3> = 0 (C_ADDR valid)
1032 * C_ADDR<42> = 1 (I/O)
1033 * C_ADDR<31:22> = 111110xxb (PCI Config space)
1034 */
1035 if (lf_subpackets->ev7 &&
1036 (lf_subpackets->ev7->c_stat == 0x14) &&
1037 !(lf_subpackets->ev7->c_sts & 0x8) &&
1038 ((lf_subpackets->ev7->c_addr & 0x400ff000000ul)
1039 == 0x400fe000000ul))
1040 status = MCHK_DISPOSITION_DISMISS;
1041
1042 return status;
1043 }
1044
1045 void
marvel_machine_check(unsigned long vector,unsigned long la_ptr)1046 marvel_machine_check(unsigned long vector, unsigned long la_ptr)
1047 {
1048 struct el_subpacket *el_ptr = (struct el_subpacket *)la_ptr;
1049 int (*process_frame)(struct ev7_lf_subpackets *, int) = NULL;
1050 struct ev7_lf_subpackets subpacket_collection = { NULL, };
1051 struct ev7_pal_io_subpacket scratch_io_packet = { 0, };
1052 struct ev7_lf_subpackets *lf_subpackets = NULL;
1053 int disposition = MCHK_DISPOSITION_UNKNOWN_ERROR;
1054 char *saved_err_prefix = err_print_prefix;
1055 char *error_type = NULL;
1056
1057 /*
1058 * Sync the processor
1059 */
1060 mb();
1061 draina();
1062
1063 switch(vector) {
1064 case SCB_Q_SYSEVENT:
1065 process_frame = marvel_process_680_frame;
1066 error_type = "System Event";
1067 break;
1068
1069 case SCB_Q_SYSMCHK:
1070 process_frame = marvel_process_logout_frame;
1071 error_type = "System Uncorrectable Error";
1072 break;
1073
1074 case SCB_Q_SYSERR:
1075 process_frame = marvel_process_logout_frame;
1076 error_type = "System Correctable Error";
1077 break;
1078
1079 default:
1080 /* Don't know it - pass it up. */
1081 ev7_machine_check(vector, la_ptr);
1082 return;
1083 }
1084
1085 /*
1086 * A system event or error has occurred, handle it here.
1087 *
1088 * Any errors in the logout frame have already been cleared by the
1089 * PALcode, so just parse it.
1090 */
1091 err_print_prefix = KERN_CRIT;
1092
1093 /*
1094 * Parse the logout frame without printing first. If the only error(s)
1095 * found are classified as "dismissable", then just dismiss them and
1096 * don't print any message
1097 */
1098 lf_subpackets =
1099 ev7_collect_logout_frame_subpackets(el_ptr,
1100 &subpacket_collection);
1101 if (process_frame && lf_subpackets && lf_subpackets->logout) {
1102 /*
1103 * We might not have the correct (or any) I/O subpacket.
1104 * [ See marvel_process_io_error() for explanation. ]
1105 * If we don't have one, point the io subpacket in
1106 * lf_subpackets at scratch_io_packet so that
1107 * marvel_find_io7_with_error() will have someplace to
1108 * store the info.
1109 */
1110 if (!lf_subpackets->io)
1111 lf_subpackets->io = &scratch_io_packet;
1112
1113 /*
1114 * Default io_pid to the processor reporting the error
1115 * [this will get changed in marvel_find_io7_with_error()
1116 * if a different one is needed]
1117 */
1118 lf_subpackets->io_pid = lf_subpackets->logout->whami;
1119
1120 /*
1121 * Evaluate the frames.
1122 */
1123 disposition = process_frame(lf_subpackets, 0);
1124 }
1125 switch(disposition) {
1126 case MCHK_DISPOSITION_DISMISS:
1127 /* Nothing to do. */
1128 break;
1129
1130 case MCHK_DISPOSITION_REPORT:
1131 /* Recognized error, report it. */
1132 printk("%s*%s (Vector 0x%x) reported on CPU %d\n",
1133 err_print_prefix, error_type,
1134 (unsigned int)vector, (int)smp_processor_id());
1135 el_print_timestamp(&lf_subpackets->logout->timestamp);
1136 process_frame(lf_subpackets, 1);
1137 break;
1138
1139 default:
1140 /* Unknown - dump the annotated subpackets. */
1141 printk("%s*%s (Vector 0x%x) reported on CPU %d\n",
1142 err_print_prefix, error_type,
1143 (unsigned int)vector, (int)smp_processor_id());
1144 el_process_subpacket(el_ptr);
1145 break;
1146
1147 }
1148
1149 err_print_prefix = saved_err_prefix;
1150
1151 /* Release the logout frame. */
1152 wrmces(0x7);
1153 mb();
1154 }
1155
1156 void __init
marvel_register_error_handlers(void)1157 marvel_register_error_handlers(void)
1158 {
1159 ev7_register_error_handlers();
1160 }
1161