xref: /openbmc/linux/arch/alpha/kernel/err_ev7.c (revision b2441318)
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 *
ev7_collect_logout_frame_subpackets(struct el_subpacket * el_ptr,struct ev7_lf_subpackets * 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
ev7_machine_check(unsigned long vector,unsigned long la_ptr)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 *
ev7_process_pal_subpacket(struct el_subpacket * header)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
ev7_register_error_handlers(void)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