tests/qtest/tco-test.c

   1 /*
   2  * QEMU ICH9 TCO emulation tests
   3  *
   4  * Copyright (c) 2015 Paulo Alcantara <pcacjr@zytor.com>
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  */
   9
  10 #include "qemu/osdep.h"
  11
  12 #include "libqtest.h"
  13 #include "libqos/pci.h"
  14 #include "libqos/pci-pc.h"
  15 #include "qapi/qmp/qdict.h"
  16 #include "hw/pci/pci_regs.h"
  17 #include "hw/southbridge/ich9.h"
  18 #include "hw/acpi/ich9.h"
  19 #include "hw/acpi/ich9_tco.h"
  20
  21 #define RCBA_BASE_ADDR    0xfed1c000
  22 #define PM_IO_BASE_ADDR   0xb000
  23
  24 enum {
  25     TCO_RLD_DEFAULT         = 0x0000,
  26     TCO_DAT_IN_DEFAULT      = 0x00,
  27     TCO_DAT_OUT_DEFAULT     = 0x00,
  28     TCO1_STS_DEFAULT        = 0x0000,
  29     TCO2_STS_DEFAULT        = 0x0000,
  30     TCO1_CNT_DEFAULT        = 0x0000,
  31     TCO2_CNT_DEFAULT        = 0x0008,
  32     TCO_MESSAGE1_DEFAULT    = 0x00,
  33     TCO_MESSAGE2_DEFAULT    = 0x00,
  34     TCO_WDCNT_DEFAULT       = 0x00,
  35     TCO_TMR_DEFAULT         = 0x0004,
  36     SW_IRQ_GEN_DEFAULT      = 0x03,
  37 };
  38
  39 #define TCO_SECS_TO_TICKS(secs)     (((secs) * 10) / 6)
  40 #define TCO_TICKS_TO_SECS(ticks)    (((ticks) * 6) / 10)
  41
  42 typedef struct {
  43     const char *args;
  44     bool noreboot;
  45     QPCIDevice *dev;
  46     QPCIBar tco_io_bar;
  47     QPCIBus *bus;
  48     QTestState *qts;
  49 } TestData;
  50
  51 static void test_end(TestData *d)
  52 {
  53     g_free(d->dev);
  54     qpci_free_pc(d->bus);
  55     qtest_quit(d->qts);
  56 }
  57
  58 static void test_init(TestData *d)
  59 {
  60     QTestState *qs;
  61
  62     qs = qtest_initf("-machine q35 %s %s",
  63                      d->noreboot ? "-global ICH9-LPC.noreboot=true" : "",
  64                      !d->args ? "" : d->args);
  65     qtest_irq_intercept_in(qs, "ioapic");
  66
  67     d->bus = qpci_new_pc(qs, NULL);
  68     d->dev = qpci_device_find(d->bus, QPCI_DEVFN(0x1f, 0x00));
  69     g_assert(d->dev != NULL);
  70
  71     qpci_device_enable(d->dev);
  72
  73     /* set ACPI PM I/O space base address */
  74     qpci_config_writel(d->dev, ICH9_LPC_PMBASE, PM_IO_BASE_ADDR | 0x1);
  75     /* enable ACPI I/O */
  76     qpci_config_writeb(d->dev, ICH9_LPC_ACPI_CTRL, 0x80);
  77     /* set Root Complex BAR */
  78     qpci_config_writel(d->dev, ICH9_LPC_RCBA, RCBA_BASE_ADDR | 0x1);
  79
  80     d->tco_io_bar = qpci_legacy_iomap(d->dev, PM_IO_BASE_ADDR + 0x60);
  81     d->qts = qs;
  82 }
  83
  84 static void stop_tco(const TestData *d)
  85 {
  86     uint32_t val;
  87
  88     val = qpci_io_readw(d->dev, d->tco_io_bar, TCO1_CNT);
  89     val |= TCO_TMR_HLT;
  90     qpci_io_writew(d->dev, d->tco_io_bar, TCO1_CNT, val);
  91 }
  92
  93 static void start_tco(const TestData *d)
  94 {
  95     uint32_t val;
  96
  97     val = qpci_io_readw(d->dev, d->tco_io_bar, TCO1_CNT);
  98     val &= ~TCO_TMR_HLT;
  99     qpci_io_writew(d->dev, d->tco_io_bar, TCO1_CNT, val);
 100 }
 101
 102 static void load_tco(const TestData *d)
 103 {
 104     qpci_io_writew(d->dev, d->tco_io_bar, TCO_RLD, 4);
 105 }
 106
 107 static void set_tco_timeout(const TestData *d, uint16_t ticks)
 108 {
 109     qpci_io_writew(d->dev, d->tco_io_bar, TCO_TMR, ticks);
 110 }
 111
 112 static void clear_tco_status(const TestData *d)
 113 {
 114     qpci_io_writew(d->dev, d->tco_io_bar, TCO1_STS, 0x0008);
 115     qpci_io_writew(d->dev, d->tco_io_bar, TCO2_STS, 0x0002);
 116     qpci_io_writew(d->dev, d->tco_io_bar, TCO2_STS, 0x0004);
 117 }
 118
 119 static void reset_on_second_timeout(const TestData *td, bool enable)
 120 {
 121     uint32_t val;
 122
 123     val = qtest_readl(td->qts, RCBA_BASE_ADDR + ICH9_CC_GCS);
 124     if (enable) {
 125         val &= ~ICH9_CC_GCS_NO_REBOOT;
 126     } else {
 127         val |= ICH9_CC_GCS_NO_REBOOT;
 128     }
 129     qtest_writel(td->qts, RCBA_BASE_ADDR + ICH9_CC_GCS, val);
 130 }
 131
 132 static void test_tco_defaults(void)
 133 {
 134     TestData d;
 135
 136     d.args = NULL;
 137     d.noreboot = true;
 138     test_init(&d);
 139     g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO_RLD), ==,
 140                     TCO_RLD_DEFAULT);
 141     /* TCO_DAT_IN & TCO_DAT_OUT */
 142     g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO_DAT_IN), ==,
 143                     (TCO_DAT_OUT_DEFAULT << 8) | TCO_DAT_IN_DEFAULT);
 144     /* TCO1_STS & TCO2_STS */
 145     g_assert_cmpint(qpci_io_readl(d.dev, d.tco_io_bar, TCO1_STS), ==,
 146                     (TCO2_STS_DEFAULT << 16) | TCO1_STS_DEFAULT);
 147     /* TCO1_CNT & TCO2_CNT */
 148     g_assert_cmpint(qpci_io_readl(d.dev, d.tco_io_bar, TCO1_CNT), ==,
 149                     (TCO2_CNT_DEFAULT << 16) | TCO1_CNT_DEFAULT);
 150     /* TCO_MESSAGE1 & TCO_MESSAGE2 */
 151     g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO_MESSAGE1), ==,
 152                     (TCO_MESSAGE2_DEFAULT << 8) | TCO_MESSAGE1_DEFAULT);
 153     g_assert_cmpint(qpci_io_readb(d.dev, d.tco_io_bar, TCO_WDCNT), ==,
 154                     TCO_WDCNT_DEFAULT);
 155     g_assert_cmpint(qpci_io_readb(d.dev, d.tco_io_bar, SW_IRQ_GEN), ==,
 156                     SW_IRQ_GEN_DEFAULT);
 157     g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO_TMR), ==,
 158                     TCO_TMR_DEFAULT);
 159     test_end(&d);
 160 }
 161
 162 static void test_tco_timeout(void)
 163 {
 164     TestData d;
 165     const uint16_t ticks = TCO_SECS_TO_TICKS(4);
 166     uint32_t val;
 167     int ret;
 168
 169     d.args = NULL;
 170     d.noreboot = true;
 171     test_init(&d);
 172
 173     stop_tco(&d);
 174     clear_tco_status(&d);
 175     reset_on_second_timeout(&d, false);
 176     set_tco_timeout(&d, ticks);
 177     load_tco(&d);
 178     start_tco(&d);
 179     qtest_clock_step(d.qts, ticks * TCO_TICK_NSEC);
 180
 181     /* test first timeout */
 182     val = qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS);
 183     ret = val & TCO_TIMEOUT ? 1 : 0;
 184     g_assert(ret == 1);
 185
 186     /* test clearing timeout bit */
 187     val |= TCO_TIMEOUT;
 188     qpci_io_writew(d.dev, d.tco_io_bar, TCO1_STS, val);
 189     val = qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS);
 190     ret = val & TCO_TIMEOUT ? 1 : 0;
 191     g_assert(ret == 0);
 192
 193     /* test second timeout */
 194     qtest_clock_step(d.qts, ticks * TCO_TICK_NSEC);
 195     val = qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS);
 196     ret = val & TCO_TIMEOUT ? 1 : 0;
 197     g_assert(ret == 1);
 198     val = qpci_io_readw(d.dev, d.tco_io_bar, TCO2_STS);
 199     ret = val & TCO_SECOND_TO_STS ? 1 : 0;
 200     g_assert(ret == 1);
 201
 202     stop_tco(&d);
 203     test_end(&d);
 204 }
 205
 206 static void test_tco_max_timeout(void)
 207 {
 208     TestData d;
 209     const uint16_t ticks = 0xffff;
 210     uint32_t val;
 211     int ret;
 212
 213     d.args = NULL;
 214     d.noreboot = true;
 215     test_init(&d);
 216
 217     stop_tco(&d);
 218     clear_tco_status(&d);
 219     reset_on_second_timeout(&d, false);
 220     set_tco_timeout(&d, ticks);
 221     load_tco(&d);
 222     start_tco(&d);
 223     qtest_clock_step(d.qts, ((ticks & TCO_TMR_MASK) - 1) * TCO_TICK_NSEC);
 224
 225     val = qpci_io_readw(d.dev, d.tco_io_bar, TCO_RLD);
 226     g_assert_cmpint(val & TCO_RLD_MASK, ==, 1);
 227     val = qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS);
 228     ret = val & TCO_TIMEOUT ? 1 : 0;
 229     g_assert(ret == 0);
 230     qtest_clock_step(d.qts, TCO_TICK_NSEC);
 231     val = qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS);
 232     ret = val & TCO_TIMEOUT ? 1 : 0;
 233     g_assert(ret == 1);
 234
 235     stop_tco(&d);
 236     test_end(&d);
 237 }
 238
 239 static QDict *get_watchdog_action(const TestData *td)
 240 {
 241     QDict *ev = qtest_qmp_eventwait_ref(td->qts, "WATCHDOG");
 242     QDict *data;
 243
 244     data = qdict_get_qdict(ev, "data");
 245     qobject_ref(data);
 246     qobject_unref(ev);
 247     return data;
 248 }
 249
 250 static void test_tco_second_timeout_pause(void)
 251 {
 252     TestData td;
 253     const uint16_t ticks = TCO_SECS_TO_TICKS(32);
 254     QDict *ad;
 255
 256     td.args = "-watchdog-action pause";
 257     td.noreboot = false;
 258     test_init(&td);
 259
 260     stop_tco(&td);
 261     clear_tco_status(&td);
 262     reset_on_second_timeout(&td, true);
 263     set_tco_timeout(&td, TCO_SECS_TO_TICKS(16));
 264     load_tco(&td);
 265     start_tco(&td);
 266     qtest_clock_step(td.qts, ticks * TCO_TICK_NSEC * 2);
 267     ad = get_watchdog_action(&td);
 268     g_assert(!strcmp(qdict_get_str(ad, "action"), "pause"));
 269     qobject_unref(ad);
 270
 271     stop_tco(&td);
 272     test_end(&td);
 273 }
 274
 275 static void test_tco_second_timeout_reset(void)
 276 {
 277     TestData td;
 278     const uint16_t ticks = TCO_SECS_TO_TICKS(16);
 279     QDict *ad;
 280
 281     td.args = "-watchdog-action reset";
 282     td.noreboot = false;
 283     test_init(&td);
 284
 285     stop_tco(&td);
 286     clear_tco_status(&td);
 287     reset_on_second_timeout(&td, true);
 288     set_tco_timeout(&td, TCO_SECS_TO_TICKS(16));
 289     load_tco(&td);
 290     start_tco(&td);
 291     qtest_clock_step(td.qts, ticks * TCO_TICK_NSEC * 2);
 292     ad = get_watchdog_action(&td);
 293     g_assert(!strcmp(qdict_get_str(ad, "action"), "reset"));
 294     qobject_unref(ad);
 295
 296     stop_tco(&td);
 297     test_end(&td);
 298 }
 299
 300 static void test_tco_second_timeout_shutdown(void)
 301 {
 302     TestData td;
 303     const uint16_t ticks = TCO_SECS_TO_TICKS(128);
 304     QDict *ad;
 305
 306     td.args = "-watchdog-action shutdown";
 307     td.noreboot = false;
 308     test_init(&td);
 309
 310     stop_tco(&td);
 311     clear_tco_status(&td);
 312     reset_on_second_timeout(&td, true);
 313     set_tco_timeout(&td, ticks);
 314     load_tco(&td);
 315     start_tco(&td);
 316     qtest_clock_step(td.qts, ticks * TCO_TICK_NSEC * 2);
 317     ad = get_watchdog_action(&td);
 318     g_assert(!strcmp(qdict_get_str(ad, "action"), "shutdown"));
 319     qobject_unref(ad);
 320
 321     stop_tco(&td);
 322     test_end(&td);
 323 }
 324
 325 static void test_tco_second_timeout_none(void)
 326 {
 327     TestData td;
 328     const uint16_t ticks = TCO_SECS_TO_TICKS(256);
 329     QDict *ad;
 330
 331     td.args = "-watchdog-action none";
 332     td.noreboot = false;
 333     test_init(&td);
 334
 335     stop_tco(&td);
 336     clear_tco_status(&td);
 337     reset_on_second_timeout(&td, true);
 338     set_tco_timeout(&td, ticks);
 339     load_tco(&td);
 340     start_tco(&td);
 341     qtest_clock_step(td.qts, ticks * TCO_TICK_NSEC * 2);
 342     ad = get_watchdog_action(&td);
 343     g_assert(!strcmp(qdict_get_str(ad, "action"), "none"));
 344     qobject_unref(ad);
 345
 346     stop_tco(&td);
 347     test_end(&td);
 348 }
 349
 350 static void test_tco_ticks_counter(void)
 351 {
 352     TestData d;
 353     uint16_t ticks = TCO_SECS_TO_TICKS(8);
 354     uint16_t rld;
 355
 356     d.args = NULL;
 357     d.noreboot = true;
 358     test_init(&d);
 359
 360     stop_tco(&d);
 361     clear_tco_status(&d);
 362     reset_on_second_timeout(&d, false);
 363     set_tco_timeout(&d, ticks);
 364     load_tco(&d);
 365     start_tco(&d);
 366
 367     do {
 368         rld = qpci_io_readw(d.dev, d.tco_io_bar, TCO_RLD) & TCO_RLD_MASK;
 369         g_assert_cmpint(rld, ==, ticks);
 370         qtest_clock_step(d.qts, TCO_TICK_NSEC);
 371         ticks--;
 372     } while (!(qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS) & TCO_TIMEOUT));
 373
 374     stop_tco(&d);
 375     test_end(&d);
 376 }
 377
 378 static void test_tco1_control_bits(void)
 379 {
 380     TestData d;
 381     uint16_t val;
 382
 383     d.args = NULL;
 384     d.noreboot = true;
 385     test_init(&d);
 386
 387     val = TCO_LOCK;
 388     qpci_io_writew(d.dev, d.tco_io_bar, TCO1_CNT, val);
 389     val &= ~TCO_LOCK;
 390     qpci_io_writew(d.dev, d.tco_io_bar, TCO1_CNT, val);
 391     g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO1_CNT), ==,
 392                     TCO_LOCK);
 393     test_end(&d);
 394 }
 395
 396 static void test_tco1_status_bits(void)
 397 {
 398     TestData d;
 399     uint16_t ticks = 8;
 400     uint16_t val;
 401     int ret;
 402
 403     d.args = NULL;
 404     d.noreboot = true;
 405     test_init(&d);
 406
 407     stop_tco(&d);
 408     clear_tco_status(&d);
 409     reset_on_second_timeout(&d, false);
 410     set_tco_timeout(&d, ticks);
 411     load_tco(&d);
 412     start_tco(&d);
 413     qtest_clock_step(d.qts, ticks * TCO_TICK_NSEC);
 414
 415     qpci_io_writeb(d.dev, d.tco_io_bar, TCO_DAT_IN, 0);
 416     qpci_io_writeb(d.dev, d.tco_io_bar, TCO_DAT_OUT, 0);
 417     val = qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS);
 418     ret = val & (TCO_TIMEOUT | SW_TCO_SMI | TCO_INT_STS) ? 1 : 0;
 419     g_assert(ret == 1);
 420     qpci_io_writew(d.dev, d.tco_io_bar, TCO1_STS, val);
 421     g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS), ==, 0);
 422     test_end(&d);
 423 }
 424
 425 static void test_tco2_status_bits(void)
 426 {
 427     TestData d;
 428     uint16_t ticks = 8;
 429     uint16_t val;
 430     int ret;
 431
 432     d.args = NULL;
 433     d.noreboot = true;
 434     test_init(&d);
 435
 436     stop_tco(&d);
 437     clear_tco_status(&d);
 438     reset_on_second_timeout(&d, true);
 439     set_tco_timeout(&d, ticks);
 440     load_tco(&d);
 441     start_tco(&d);
 442     qtest_clock_step(d.qts, ticks * TCO_TICK_NSEC * 2);
 443
 444     val = qpci_io_readw(d.dev, d.tco_io_bar, TCO2_STS);
 445     ret = val & (TCO_SECOND_TO_STS | TCO_BOOT_STS) ? 1 : 0;
 446     g_assert(ret == 1);
 447     qpci_io_writew(d.dev, d.tco_io_bar, TCO2_STS, val);
 448     g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO2_STS), ==, 0);
 449     test_end(&d);
 450 }
 451
 452 int main(int argc, char **argv)
 453 {
 454     g_test_init(&argc, &argv, NULL);
 455
 456     qtest_add_func("tco/defaults", test_tco_defaults);
 457     qtest_add_func("tco/timeout/no_action", test_tco_timeout);
 458     qtest_add_func("tco/timeout/no_action/max", test_tco_max_timeout);
 459     qtest_add_func("tco/second_timeout/pause", test_tco_second_timeout_pause);
 460     qtest_add_func("tco/second_timeout/reset", test_tco_second_timeout_reset);
 461     qtest_add_func("tco/second_timeout/shutdown",
 462                    test_tco_second_timeout_shutdown);
 463     qtest_add_func("tco/second_timeout/none", test_tco_second_timeout_none);
 464     qtest_add_func("tco/counter", test_tco_ticks_counter);
 465     qtest_add_func("tco/tco1_control/bits", test_tco1_control_bits);
 466     qtest_add_func("tco/tco1_status/bits", test_tco1_status_bits);
 467     qtest_add_func("tco/tco2_status/bits", test_tco2_status_bits);
 468     return g_test_run();
 469 }