hw/spapr_events.c

   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.h"
  29 #include "qemu-char.h"
  30 #include "hw/qdev.h"
  31 #include "device_tree.h"
  32
  33 #include "hw/spapr.h"
  34 #include "hw/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 }