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virtio-pci: drop unused wmb macro
[qemu/qmp-unstable.git] / hw / ppc / spapr_events.c
blobc0d7e62f3280f55da9665278a40d94f5f56f6402
1 /*
2 * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator
3 *
4 * RTAS events handling
5 *
6 * Copyright (c) 2012 David Gibson, IBM Corporation.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 * THE SOFTWARE.
25 *
26 */
27 #include "cpu.h"
28 #include "sysemu/sysemu.h"
29 #include "sysemu/char.h"
30 #include "hw/qdev.h"
31 #include "sysemu/device_tree.h"
32
33 #include "hw/ppc/spapr.h"
34 #include "hw/ppc/spapr_vio.h"
35
36 #include <libfdt.h>
37
38 struct rtas_error_log {
39 uint32_t summary;
40 #define RTAS_LOG_VERSION_MASK 0xff000000
41 #define RTAS_LOG_VERSION_6 0x06000000
42 #define RTAS_LOG_SEVERITY_MASK 0x00e00000
43 #define RTAS_LOG_SEVERITY_ALREADY_REPORTED 0x00c00000
44 #define RTAS_LOG_SEVERITY_FATAL 0x00a00000
45 #define RTAS_LOG_SEVERITY_ERROR 0x00800000
46 #define RTAS_LOG_SEVERITY_ERROR_SYNC 0x00600000
47 #define RTAS_LOG_SEVERITY_WARNING 0x00400000
48 #define RTAS_LOG_SEVERITY_EVENT 0x00200000
49 #define RTAS_LOG_SEVERITY_NO_ERROR 0x00000000
50 #define RTAS_LOG_DISPOSITION_MASK 0x00180000
51 #define RTAS_LOG_DISPOSITION_FULLY_RECOVERED 0x00000000
52 #define RTAS_LOG_DISPOSITION_LIMITED_RECOVERY 0x00080000
53 #define RTAS_LOG_DISPOSITION_NOT_RECOVERED 0x00100000
54 #define RTAS_LOG_OPTIONAL_PART_PRESENT 0x00040000
55 #define RTAS_LOG_INITIATOR_MASK 0x0000f000
56 #define RTAS_LOG_INITIATOR_UNKNOWN 0x00000000
57 #define RTAS_LOG_INITIATOR_CPU 0x00001000
58 #define RTAS_LOG_INITIATOR_PCI 0x00002000
59 #define RTAS_LOG_INITIATOR_MEMORY 0x00004000
60 #define RTAS_LOG_INITIATOR_HOTPLUG 0x00006000
61 #define RTAS_LOG_TARGET_MASK 0x00000f00
62 #define RTAS_LOG_TARGET_UNKNOWN 0x00000000
63 #define RTAS_LOG_TARGET_CPU 0x00000100
64 #define RTAS_LOG_TARGET_PCI 0x00000200
65 #define RTAS_LOG_TARGET_MEMORY 0x00000400
66 #define RTAS_LOG_TARGET_HOTPLUG 0x00000600
67 #define RTAS_LOG_TYPE_MASK 0x000000ff
68 #define RTAS_LOG_TYPE_OTHER 0x00000000
69 #define RTAS_LOG_TYPE_RETRY 0x00000001
70 #define RTAS_LOG_TYPE_TCE_ERR 0x00000002
71 #define RTAS_LOG_TYPE_INTERN_DEV_FAIL 0x00000003
72 #define RTAS_LOG_TYPE_TIMEOUT 0x00000004
73 #define RTAS_LOG_TYPE_DATA_PARITY 0x00000005
74 #define RTAS_LOG_TYPE_ADDR_PARITY 0x00000006
75 #define RTAS_LOG_TYPE_CACHE_PARITY 0x00000007
76 #define RTAS_LOG_TYPE_ADDR_INVALID 0x00000008
77 #define RTAS_LOG_TYPE_ECC_UNCORR 0x00000009
78 #define RTAS_LOG_TYPE_ECC_CORR 0x0000000a
79 #define RTAS_LOG_TYPE_EPOW 0x00000040
80 uint32_t extended_length;
81 } QEMU_PACKED;
82
83 struct rtas_event_log_v6 {
84 uint8_t b0;
85 #define RTAS_LOG_V6_B0_VALID 0x80
86 #define RTAS_LOG_V6_B0_UNRECOVERABLE_ERROR 0x40
87 #define RTAS_LOG_V6_B0_RECOVERABLE_ERROR 0x20
88 #define RTAS_LOG_V6_B0_DEGRADED_OPERATION 0x10
89 #define RTAS_LOG_V6_B0_PREDICTIVE_ERROR 0x08
90 #define RTAS_LOG_V6_B0_NEW_LOG 0x04
91 #define RTAS_LOG_V6_B0_BIGENDIAN 0x02
92 uint8_t _resv1;
93 uint8_t b2;
94 #define RTAS_LOG_V6_B2_POWERPC_FORMAT 0x80
95 #define RTAS_LOG_V6_B2_LOG_FORMAT_MASK 0x0f
96 #define RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT 0x0e
97 uint8_t _resv2[9];
98 uint32_t company;
99 #define RTAS_LOG_V6_COMPANY_IBM 0x49424d00 /* IBM<null> */
100 } QEMU_PACKED;
101
102 struct rtas_event_log_v6_section_header {
103 uint16_t section_id;
104 uint16_t section_length;
105 uint8_t section_version;
106 uint8_t section_subtype;
107 uint16_t creator_component_id;
108 } QEMU_PACKED;
109
110 struct rtas_event_log_v6_maina {
111 #define RTAS_LOG_V6_SECTION_ID_MAINA 0x5048 /* PH */
112 struct rtas_event_log_v6_section_header hdr;
113 uint32_t creation_date; /* BCD: YYYYMMDD */
114 uint32_t creation_time; /* BCD: HHMMSS00 */
115 uint8_t _platform1[8];
116 char creator_id;
117 uint8_t _resv1[2];
118 uint8_t section_count;
119 uint8_t _resv2[4];
120 uint8_t _platform2[8];
121 uint32_t plid;
122 uint8_t _platform3[4];
123 } QEMU_PACKED;
124
125 struct rtas_event_log_v6_mainb {
126 #define RTAS_LOG_V6_SECTION_ID_MAINB 0x5548 /* UH */
127 struct rtas_event_log_v6_section_header hdr;
128 uint8_t subsystem_id;
129 uint8_t _platform1;
130 uint8_t event_severity;
131 uint8_t event_subtype;
132 uint8_t _platform2[4];
133 uint8_t _resv1[2];
134 uint16_t action_flags;
135 uint8_t _resv2[4];
136 } QEMU_PACKED;
137
138 struct rtas_event_log_v6_epow {
139 #define RTAS_LOG_V6_SECTION_ID_EPOW 0x4550 /* EP */
140 struct rtas_event_log_v6_section_header hdr;
141 uint8_t sensor_value;
142 #define RTAS_LOG_V6_EPOW_ACTION_RESET 0
143 #define RTAS_LOG_V6_EPOW_ACTION_WARN_COOLING 1
144 #define RTAS_LOG_V6_EPOW_ACTION_WARN_POWER 2
145 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN 3
146 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_HALT 4
147 #define RTAS_LOG_V6_EPOW_ACTION_MAIN_ENCLOSURE 5
148 #define RTAS_LOG_V6_EPOW_ACTION_POWER_OFF 7
149 uint8_t event_modifier;
150 #define RTAS_LOG_V6_EPOW_MODIFIER_NORMAL 1
151 #define RTAS_LOG_V6_EPOW_MODIFIER_ON_UPS 2
152 #define RTAS_LOG_V6_EPOW_MODIFIER_CRITICAL 3
153 #define RTAS_LOG_V6_EPOW_MODIFIER_TEMPERATURE 4
154 uint8_t extended_modifier;
155 #define RTAS_LOG_V6_EPOW_XMODIFIER_SYSTEM_WIDE 0
156 #define RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC 1
157 uint8_t _resv;
158 uint64_t reason_code;
159 } QEMU_PACKED;
160
161 struct epow_log_full {
162 struct rtas_error_log hdr;
163 struct rtas_event_log_v6 v6hdr;
164 struct rtas_event_log_v6_maina maina;
165 struct rtas_event_log_v6_mainb mainb;
166 struct rtas_event_log_v6_epow epow;
167 } QEMU_PACKED;
168
169 #define EVENT_MASK_INTERNAL_ERRORS 0x80000000
170 #define EVENT_MASK_EPOW 0x40000000
171 #define EVENT_MASK_HOTPLUG 0x10000000
172 #define EVENT_MASK_IO 0x08000000
173
174 #define _FDT(exp) \
175 do { \
176 int ret = (exp); \
177 if (ret < 0) { \
178 fprintf(stderr, "qemu: error creating device tree: %s: %s\n", \
179 #exp, fdt_strerror(ret)); \
180 exit(1); \
181 } \
182 } while (0)
183
184 void spapr_events_fdt_skel(void *fdt, uint32_t epow_irq)
185 {
186 uint32_t epow_irq_ranges[] = {cpu_to_be32(epow_irq), cpu_to_be32(1)};
187 uint32_t epow_interrupts[] = {cpu_to_be32(epow_irq), 0};
188
189 _FDT((fdt_begin_node(fdt, "event-sources")));
190
191 _FDT((fdt_property(fdt, "interrupt-controller", NULL, 0)));
192 _FDT((fdt_property_cell(fdt, "#interrupt-cells", 2)));
193 _FDT((fdt_property(fdt, "interrupt-ranges",
194 epow_irq_ranges, sizeof(epow_irq_ranges))));
195
196 _FDT((fdt_begin_node(fdt, "epow-events")));
197 _FDT((fdt_property(fdt, "interrupts",
198 epow_interrupts, sizeof(epow_interrupts))));
199 _FDT((fdt_end_node(fdt)));
200
201 _FDT((fdt_end_node(fdt)));
202 }
203
204 static struct epow_log_full *pending_epow;
205 static uint32_t next_plid;
206
207 static void spapr_powerdown_req(Notifier *n, void *opaque)
208 {
209 sPAPREnvironment *spapr = container_of(n, sPAPREnvironment, epow_notifier);
210 struct rtas_error_log *hdr;
211 struct rtas_event_log_v6 *v6hdr;
212 struct rtas_event_log_v6_maina *maina;
213 struct rtas_event_log_v6_mainb *mainb;
214 struct rtas_event_log_v6_epow *epow;
215 struct tm tm;
216 int year;
217
218 if (pending_epow) {
219 /* For now, we just throw away earlier events if two come
220 * along before any are consumed. This is sufficient for our
221 * powerdown messages, but we'll need more if we do more
222 * general error/event logging */
223 g_free(pending_epow);
224 }
225 pending_epow = g_malloc0(sizeof(*pending_epow));
226 hdr = &pending_epow->hdr;
227 v6hdr = &pending_epow->v6hdr;
228 maina = &pending_epow->maina;
229 mainb = &pending_epow->mainb;
230 epow = &pending_epow->epow;
231
232 hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6
233 | RTAS_LOG_SEVERITY_EVENT
234 | RTAS_LOG_DISPOSITION_NOT_RECOVERED
235 | RTAS_LOG_OPTIONAL_PART_PRESENT
236 | RTAS_LOG_TYPE_EPOW);
237 hdr->extended_length = cpu_to_be32(sizeof(*pending_epow)
238 - sizeof(pending_epow->hdr));
239
240 v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG
241 | RTAS_LOG_V6_B0_BIGENDIAN;
242 v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT
243 | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT;
244 v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM);
245
246 maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA);
247 maina->hdr.section_length = cpu_to_be16(sizeof(*maina));
248 /* FIXME: section version, subtype and creator id? */
249 qemu_get_timedate(&tm, spapr->rtc_offset);
250 year = tm.tm_year + 1900;
251 maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24)
252 | (to_bcd(year % 100) << 16)
253 | (to_bcd(tm.tm_mon + 1) << 8)
254 | to_bcd(tm.tm_mday));
255 maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24)
256 | (to_bcd(tm.tm_min) << 16)
257 | (to_bcd(tm.tm_sec) << 8));
258 maina->creator_id = 'H'; /* Hypervisor */
259 maina->section_count = 3; /* Main-A, Main-B and EPOW */
260 maina->plid = next_plid++;
261
262 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB);
263 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb));
264 /* FIXME: section version, subtype and creator id? */
265 mainb->subsystem_id = 0xa0; /* External environment */
266 mainb->event_severity = 0x00; /* Informational / non-error */
267 mainb->event_subtype = 0xd0; /* Normal shutdown */
268
269 epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW);
270 epow->hdr.section_length = cpu_to_be16(sizeof(*epow));
271 epow->hdr.section_version = 2; /* includes extended modifier */
272 /* FIXME: section subtype and creator id? */
273 epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN;
274 epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL;
275 epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC;
276
277 qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->epow_irq));
278 }
279
280 static void check_exception(sPAPREnvironment *spapr,
281 uint32_t token, uint32_t nargs,
282 target_ulong args,
283 uint32_t nret, target_ulong rets)
284 {
285 uint32_t mask, buf, len;
286 uint64_t xinfo;
287
288 if ((nargs < 6) || (nargs > 7) || nret != 1) {
289 rtas_st(rets, 0, -3);
290 return;
291 }
292
293 xinfo = rtas_ld(args, 1);
294 mask = rtas_ld(args, 2);
295 buf = rtas_ld(args, 4);
296 len = rtas_ld(args, 5);
297 if (nargs == 7) {
298 xinfo |= (uint64_t)rtas_ld(args, 6) << 32;
299 }
300
301 if ((mask & EVENT_MASK_EPOW) && pending_epow) {
302 if (sizeof(*pending_epow) < len) {
303 len = sizeof(*pending_epow);
304 }
305
306 cpu_physical_memory_write(buf, pending_epow, len);
307 g_free(pending_epow);
308 pending_epow = NULL;
309 rtas_st(rets, 0, 0);
310 } else {
311 rtas_st(rets, 0, 1);
312 }
313 }
314
315 void spapr_events_init(sPAPREnvironment *spapr)
316 {
317 spapr->epow_irq = spapr_allocate_msi(0);
318 spapr->epow_notifier.notify = spapr_powerdown_req;
319 qemu_register_powerdown_notifier(&spapr->epow_notifier);
320 spapr_rtas_register("check-exception", check_exception);
321 }
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