1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * linux/arch/alpha/kernel/err_ev7.c
4 *
5 * Copyright (C) 2000 Jeff Wiedemeier (Compaq Computer Corporation)
6 *
7 * Error handling code supporting Alpha systems
8 */
9
10 #include <linux/init.h>
11 #include <linux/sched.h>
12
13 #include <asm/io.h>
14 #include <asm/hwrpb.h>
15 #include <asm/smp.h>
16 #include <asm/err_common.h>
17 #include <asm/err_ev7.h>
18
19 #include "err_impl.h"
20 #include "proto.h"
21
22 struct ev7_lf_subpackets *
23 ev7_collect_logout_frame_subpackets(struct el_subpacket *el_ptr,
24 struct ev7_lf_subpackets *lf_subpackets)
25 {
26 struct el_subpacket *subpacket;
27 int i;
28
29 /*
30 * A Marvel machine check frame is always packaged in an
31 * el_subpacket of class HEADER, type LOGOUT_FRAME.
32 */
33 if (el_ptr->class != EL_CLASS__HEADER ||
34 el_ptr->type != EL_TYPE__HEADER__LOGOUT_FRAME)
35 return NULL;
36
37 /*
38 * It is a logout frame header. Look at the one subpacket.
39 */
40 el_ptr = (struct el_subpacket *)
41 ((unsigned long)el_ptr + el_ptr->length);
42
43 /*
44 * It has to be class PAL, type LOGOUT_FRAME.
45 */
46 if (el_ptr->class != EL_CLASS__PAL ||
47 el_ptr->type != EL_TYPE__PAL__LOGOUT_FRAME)
48 return NULL;
49
50 lf_subpackets->logout = (struct ev7_pal_logout_subpacket *)
51 el_ptr->by_type.raw.data_start;
52
53 /*
54 * Process the subpackets.
55 */
56 subpacket = (struct el_subpacket *)
57 ((unsigned long)el_ptr + el_ptr->length);
58 for (i = 0;
59 subpacket && i < lf_subpackets->logout->subpacket_count;
60 subpacket = (struct el_subpacket *)
61 ((unsigned long)subpacket + subpacket->length), i++) {
62 /*
63 * All subpackets should be class PAL.
64 */
65 if (subpacket->class != EL_CLASS__PAL) {
66 printk("%s**UNEXPECTED SUBPACKET CLASS %d "
67 "IN LOGOUT FRAME (packet %d\n",
68 err_print_prefix, subpacket->class, i);
69 return NULL;
70 }
71
72 /*
73 * Remember the subpacket.
74 */
75 switch(subpacket->type) {
76 case EL_TYPE__PAL__EV7_PROCESSOR:
77 lf_subpackets->ev7 =
78 (struct ev7_pal_processor_subpacket *)
79 subpacket->by_type.raw.data_start;
80 break;
81
82 case EL_TYPE__PAL__EV7_RBOX:
83 lf_subpackets->rbox = (struct ev7_pal_rbox_subpacket *)
84 subpacket->by_type.raw.data_start;
85 break;
86
87 case EL_TYPE__PAL__EV7_ZBOX:
88 lf_subpackets->zbox = (struct ev7_pal_zbox_subpacket *)
89 subpacket->by_type.raw.data_start;
90 break;
91
92 case EL_TYPE__PAL__EV7_IO:
93 lf_subpackets->io = (struct ev7_pal_io_subpacket *)
94 subpacket->by_type.raw.data_start;
95 break;
96
97 case EL_TYPE__PAL__ENV__AMBIENT_TEMPERATURE:
98 case EL_TYPE__PAL__ENV__AIRMOVER_FAN:
99 case EL_TYPE__PAL__ENV__VOLTAGE:
100 case EL_TYPE__PAL__ENV__INTRUSION:
101 case EL_TYPE__PAL__ENV__POWER_SUPPLY:
102 case EL_TYPE__PAL__ENV__LAN:
103 case EL_TYPE__PAL__ENV__HOT_PLUG:
104 lf_subpackets->env[ev7_lf_env_index(subpacket->type)] =
105 (struct ev7_pal_environmental_subpacket *)
106 subpacket->by_type.raw.data_start;
107 break;
108
109 default:
110 /*
111 * Don't know what kind of frame this is.
112 */
113 return NULL;
114 }
115 }
116
117 return lf_subpackets;
118 }
119
120 void
121 ev7_machine_check(unsigned long vector, unsigned long la_ptr)
122 {
123 struct el_subpacket *el_ptr = (struct el_subpacket *)la_ptr;
124 char *saved_err_prefix = err_print_prefix;
125
126 /*
127 * Sync the processor
128 */
129 mb();
130 draina();
131
132 err_print_prefix = KERN_CRIT;
133 printk("%s*CPU %s Error (Vector 0x%x) reported on CPU %d\n",
134 err_print_prefix,
135 (vector == SCB_Q_PROCERR) ? "Correctable" : "Uncorrectable",
136 (unsigned int)vector, (int)smp_processor_id());
137 el_process_subpacket(el_ptr);
138 err_print_prefix = saved_err_prefix;
139
140 /*
141 * Release the logout frame
142 */
143 wrmces(0x7);
144 mb();
145 }
146
147 static char *el_ev7_processor_subpacket_annotation[] = {
148 "Subpacket Header", "I_STAT", "DC_STAT",
149 "C_ADDR", "C_SYNDROME_1", "C_SYNDROME_0",
150 "C_STAT", "C_STS", "MM_STAT",
151 "EXC_ADDR", "IER_CM", "ISUM",
152 "PAL_BASE", "I_CTL", "PROCESS_CONTEXT",
153 "CBOX_CTL", "CBOX_STP_CTL", "CBOX_ACC_CTL",
154 "CBOX_LCL_SET", "CBOX_GLB_SET", "BBOX_CTL",
155 "BBOX_ERR_STS", "BBOX_ERR_IDX", "CBOX_DDP_ERR_STS",
156 "BBOX_DAT_RMP", NULL
157 };
158
159 static char *el_ev7_zbox_subpacket_annotation[] = {
160 "Subpacket Header",
161 "ZBOX(0): DRAM_ERR_STATUS_2 / DRAM_ERR_STATUS_1",
162 "ZBOX(0): DRAM_ERROR_CTL / DRAM_ERR_STATUS_3",
163 "ZBOX(0): DIFT_TIMEOUT / DRAM_ERR_ADR",
164 "ZBOX(0): FRC_ERR_ADR / DRAM_MAPPER_CTL",
165 "ZBOX(0): reserved / DIFT_ERR_STATUS",
166 "ZBOX(1): DRAM_ERR_STATUS_2 / DRAM_ERR_STATUS_1",
167 "ZBOX(1): DRAM_ERROR_CTL / DRAM_ERR_STATUS_3",
168 "ZBOX(1): DIFT_TIMEOUT / DRAM_ERR_ADR",
169 "ZBOX(1): FRC_ERR_ADR / DRAM_MAPPER_CTL",
170 "ZBOX(1): reserved / DIFT_ERR_STATUS",
171 "CBOX_CTL", "CBOX_STP_CTL",
172 "ZBOX(0)_ERROR_PA", "ZBOX(1)_ERROR_PA",
173 "ZBOX(0)_ORED_SYNDROME","ZBOX(1)_ORED_SYNDROME",
174 NULL
175 };
176
177 static char *el_ev7_rbox_subpacket_annotation[] = {
178 "Subpacket Header", "RBOX_CFG", "RBOX_N_CFG",
179 "RBOX_S_CFG", "RBOX_E_CFG", "RBOX_W_CFG",
180 "RBOX_N_ERR", "RBOX_S_ERR", "RBOX_E_ERR",
181 "RBOX_W_ERR", "RBOX_IO_CFG", "RBOX_IO_ERR",
182 "RBOX_L_ERR", "RBOX_WHOAMI", "RBOX_IMASL",
183 "RBOX_INTQ", "RBOX_INT", NULL
184 };
185
186 static char *el_ev7_io_subpacket_annotation[] = {
187 "Subpacket Header", "IO_ASIC_REV", "IO_SYS_REV",
188 "IO7_UPH", "HPI_CTL", "CRD_CTL",
189 "HEI_CTL", "PO7_ERROR_SUM","PO7_UNCRR_SYM",
190 "PO7_CRRCT_SYM", "PO7_UGBGE_SYM","PO7_ERR_PKT0",
191 "PO7_ERR_PKT1", "reserved", "reserved",
192 "PO0_ERR_SUM", "PO0_TLB_ERR", "PO0_SPL_COMPLT",
193 "PO0_TRANS_SUM", "PO0_FIRST_ERR","PO0_MULT_ERR",
194 "DM CSR PH", "DM CSR PH", "DM CSR PH",
195 "DM CSR PH", "reserved",
196 "PO1_ERR_SUM", "PO1_TLB_ERR", "PO1_SPL_COMPLT",
197 "PO1_TRANS_SUM", "PO1_FIRST_ERR","PO1_MULT_ERR",
198 "DM CSR PH", "DM CSR PH", "DM CSR PH",
199 "DM CSR PH", "reserved",
200 "PO2_ERR_SUM", "PO2_TLB_ERR", "PO2_SPL_COMPLT",
201 "PO2_TRANS_SUM", "PO2_FIRST_ERR","PO2_MULT_ERR",
202 "DM CSR PH", "DM CSR PH", "DM CSR PH",
203 "DM CSR PH", "reserved",
204 "PO3_ERR_SUM", "PO3_TLB_ERR", "PO3_SPL_COMPLT",
205 "PO3_TRANS_SUM", "PO3_FIRST_ERR","PO3_MULT_ERR",
206 "DM CSR PH", "DM CSR PH", "DM CSR PH",
207 "DM CSR PH", "reserved",
208 NULL
209 };
210
211 static struct el_subpacket_annotation el_ev7_pal_annotations[] = {
212 SUBPACKET_ANNOTATION(EL_CLASS__PAL,
213 EL_TYPE__PAL__EV7_PROCESSOR,
214 1,
215 "EV7 Processor Subpacket",
216 el_ev7_processor_subpacket_annotation),
217 SUBPACKET_ANNOTATION(EL_CLASS__PAL,
218 EL_TYPE__PAL__EV7_ZBOX,
219 1,
220 "EV7 ZBOX Subpacket",
221 el_ev7_zbox_subpacket_annotation),
222 SUBPACKET_ANNOTATION(EL_CLASS__PAL,
223 EL_TYPE__PAL__EV7_RBOX,
224 1,
225 "EV7 RBOX Subpacket",
226 el_ev7_rbox_subpacket_annotation),
227 SUBPACKET_ANNOTATION(EL_CLASS__PAL,
228 EL_TYPE__PAL__EV7_IO,
229 1,
230 "EV7 IO Subpacket",
231 el_ev7_io_subpacket_annotation)
232 };
233
234 static struct el_subpacket *
235 ev7_process_pal_subpacket(struct el_subpacket *header)
236 {
237 struct ev7_pal_subpacket *packet;
238
239 if (header->class != EL_CLASS__PAL) {
240 printk("%s ** Unexpected header CLASS %d TYPE %d, aborting\n",
241 err_print_prefix,
242 header->class, header->type);
243 return NULL;
244 }
245
246 packet = (struct ev7_pal_subpacket *)header->by_type.raw.data_start;
247
248 switch(header->type) {
249 case EL_TYPE__PAL__LOGOUT_FRAME:
250 printk("%s*** MCHK occurred on LPID %lld (RBOX %llx)\n",
251 err_print_prefix,
252 packet->by_type.logout.whami,
253 packet->by_type.logout.rbox_whami);
254 el_print_timestamp(&packet->by_type.logout.timestamp);
255 printk("%s EXC_ADDR: %016llx\n"
256 " HALT_CODE: %llx\n",
257 err_print_prefix,
258 packet->by_type.logout.exc_addr,
259 packet->by_type.logout.halt_code);
260 el_process_subpackets(header,
261 packet->by_type.logout.subpacket_count);
262 break;
263 default:
264 printk("%s ** PAL TYPE %d SUBPACKET\n",
265 err_print_prefix,
266 header->type);
267 el_annotate_subpacket(header);
268 break;
269 }
270
271 return (struct el_subpacket *)((unsigned long)header + header->length);
272 }
273
274 struct el_subpacket_handler ev7_pal_subpacket_handler =
275 SUBPACKET_HANDLER_INIT(EL_CLASS__PAL, ev7_process_pal_subpacket);
276
277 void __init
278 ev7_register_error_handlers(void)
279 {
280 int i;
281
282 for (i = 0; i < ARRAY_SIZE(el_ev7_pal_annotations); i++)
283 cdl_register_subpacket_annotation(&el_ev7_pal_annotations[i]);
284
285 cdl_register_subpacket_handler(&ev7_pal_subpacket_handler);
286 }
287
288
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.