qemu/tests/tco-test.c
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   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#include "qemu/osdep.h"
  10
  11#include "libqtest.h"
  12#include "libqos/pci.h"
  13#include "libqos/pci-pc.h"
  14#include "hw/pci/pci_regs.h"
  15#include "hw/i386/ich9.h"
  16#include "hw/acpi/ich9.h"
  17#include "hw/acpi/tco.h"
  18
  19#define RCBA_BASE_ADDR    0xfed1c000
  20#define PM_IO_BASE_ADDR   0xb000
  21
  22enum {
  23    TCO_RLD_DEFAULT         = 0x0000,
  24    TCO_DAT_IN_DEFAULT      = 0x00,
  25    TCO_DAT_OUT_DEFAULT     = 0x00,
  26    TCO1_STS_DEFAULT        = 0x0000,
  27    TCO2_STS_DEFAULT        = 0x0000,
  28    TCO1_CNT_DEFAULT        = 0x0000,
  29    TCO2_CNT_DEFAULT        = 0x0008,
  30    TCO_MESSAGE1_DEFAULT    = 0x00,
  31    TCO_MESSAGE2_DEFAULT    = 0x00,
  32    TCO_WDCNT_DEFAULT       = 0x00,
  33    TCO_TMR_DEFAULT         = 0x0004,
  34    SW_IRQ_GEN_DEFAULT      = 0x03,
  35};
  36
  37#define TCO_SECS_TO_TICKS(secs)     (((secs) * 10) / 6)
  38#define TCO_TICKS_TO_SECS(ticks)    (((ticks) * 6) / 10)
  39
  40typedef struct {
  41    const char *args;
  42    bool noreboot;
  43    QPCIDevice *dev;
  44    QPCIBar tco_io_bar;
  45    QPCIBus *bus;
  46} TestData;
  47
  48static void test_end(TestData *d)
  49{
  50    g_free(d->dev);
  51    qpci_free_pc(d->bus);
  52    qtest_end();
  53}
  54
  55static void test_init(TestData *d)
  56{
  57    QTestState *qs;
  58
  59    qs = qtest_startf("-machine q35 %s %s",
  60                      d->noreboot ? "" : "-global ICH9-LPC.noreboot=false",
  61                      !d->args ? "" : d->args);
  62    global_qtest = qs;
  63    qtest_irq_intercept_in(qs, "ioapic");
  64
  65    d->bus = qpci_init_pc(NULL);
  66    d->dev = qpci_device_find(d->bus, QPCI_DEVFN(0x1f, 0x00));
  67    g_assert(d->dev != NULL);
  68
  69    qpci_device_enable(d->dev);
  70
  71    /* set ACPI PM I/O space base address */
  72    qpci_config_writel(d->dev, ICH9_LPC_PMBASE, PM_IO_BASE_ADDR | 0x1);
  73    /* enable ACPI I/O */
  74    qpci_config_writeb(d->dev, ICH9_LPC_ACPI_CTRL, 0x80);
  75    /* set Root Complex BAR */
  76    qpci_config_writel(d->dev, ICH9_LPC_RCBA, RCBA_BASE_ADDR | 0x1);
  77
  78    d->tco_io_bar = qpci_legacy_iomap(d->dev, PM_IO_BASE_ADDR + 0x60);
  79}
  80
  81static void stop_tco(const TestData *d)
  82{
  83    uint32_t val;
  84
  85    val = qpci_io_readw(d->dev, d->tco_io_bar, TCO1_CNT);
  86    val |= TCO_TMR_HLT;
  87    qpci_io_writew(d->dev, d->tco_io_bar, TCO1_CNT, val);
  88}
  89
  90static void start_tco(const TestData *d)
  91{
  92    uint32_t val;
  93
  94    val = qpci_io_readw(d->dev, d->tco_io_bar, TCO1_CNT);
  95    val &= ~TCO_TMR_HLT;
  96    qpci_io_writew(d->dev, d->tco_io_bar, TCO1_CNT, val);
  97}
  98
  99static void load_tco(const TestData *d)
 100{
 101    qpci_io_writew(d->dev, d->tco_io_bar, TCO_RLD, 4);
 102}
 103
 104static void set_tco_timeout(const TestData *d, uint16_t ticks)
 105{
 106    qpci_io_writew(d->dev, d->tco_io_bar, TCO_TMR, ticks);
 107}
 108
 109static void clear_tco_status(const TestData *d)
 110{
 111    qpci_io_writew(d->dev, d->tco_io_bar, TCO1_STS, 0x0008);
 112    qpci_io_writew(d->dev, d->tco_io_bar, TCO2_STS, 0x0002);
 113    qpci_io_writew(d->dev, d->tco_io_bar, TCO2_STS, 0x0004);
 114}
 115
 116static void reset_on_second_timeout(bool enable)
 117{
 118    uint32_t val;
 119
 120    val = readl(RCBA_BASE_ADDR + ICH9_CC_GCS);
 121    if (enable) {
 122        val &= ~ICH9_CC_GCS_NO_REBOOT;
 123    } else {
 124        val |= ICH9_CC_GCS_NO_REBOOT;
 125    }
 126    writel(RCBA_BASE_ADDR + ICH9_CC_GCS, val);
 127}
 128
 129static void test_tco_defaults(void)
 130{
 131    TestData d;
 132
 133    d.args = NULL;
 134    d.noreboot = true;
 135    test_init(&d);
 136    g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO_RLD), ==,
 137                    TCO_RLD_DEFAULT);
 138    /* TCO_DAT_IN & TCO_DAT_OUT */
 139    g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO_DAT_IN), ==,
 140                    (TCO_DAT_OUT_DEFAULT << 8) | TCO_DAT_IN_DEFAULT);
 141    /* TCO1_STS & TCO2_STS */
 142    g_assert_cmpint(qpci_io_readl(d.dev, d.tco_io_bar, TCO1_STS), ==,
 143                    (TCO2_STS_DEFAULT << 16) | TCO1_STS_DEFAULT);
 144    /* TCO1_CNT & TCO2_CNT */
 145    g_assert_cmpint(qpci_io_readl(d.dev, d.tco_io_bar, TCO1_CNT), ==,
 146                    (TCO2_CNT_DEFAULT << 16) | TCO1_CNT_DEFAULT);
 147    /* TCO_MESSAGE1 & TCO_MESSAGE2 */
 148    g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO_MESSAGE1), ==,
 149                    (TCO_MESSAGE2_DEFAULT << 8) | TCO_MESSAGE1_DEFAULT);
 150    g_assert_cmpint(qpci_io_readb(d.dev, d.tco_io_bar, TCO_WDCNT), ==,
 151                    TCO_WDCNT_DEFAULT);
 152    g_assert_cmpint(qpci_io_readb(d.dev, d.tco_io_bar, SW_IRQ_GEN), ==,
 153                    SW_IRQ_GEN_DEFAULT);
 154    g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO_TMR), ==,
 155                    TCO_TMR_DEFAULT);
 156    test_end(&d);
 157}
 158
 159static void test_tco_timeout(void)
 160{
 161    TestData d;
 162    const uint16_t ticks = TCO_SECS_TO_TICKS(4);
 163    uint32_t val;
 164    int ret;
 165
 166    d.args = NULL;
 167    d.noreboot = true;
 168    test_init(&d);
 169
 170    stop_tco(&d);
 171    clear_tco_status(&d);
 172    reset_on_second_timeout(false);
 173    set_tco_timeout(&d, ticks);
 174    load_tco(&d);
 175    start_tco(&d);
 176    clock_step(ticks * TCO_TICK_NSEC);
 177
 178    /* test first timeout */
 179    val = qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS);
 180    ret = val & TCO_TIMEOUT ? 1 : 0;
 181    g_assert(ret == 1);
 182
 183    /* test clearing timeout bit */
 184    val |= TCO_TIMEOUT;
 185    qpci_io_writew(d.dev, d.tco_io_bar, TCO1_STS, val);
 186    val = qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS);
 187    ret = val & TCO_TIMEOUT ? 1 : 0;
 188    g_assert(ret == 0);
 189
 190    /* test second timeout */
 191    clock_step(ticks * TCO_TICK_NSEC);
 192    val = qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS);
 193    ret = val & TCO_TIMEOUT ? 1 : 0;
 194    g_assert(ret == 1);
 195    val = qpci_io_readw(d.dev, d.tco_io_bar, TCO2_STS);
 196    ret = val & TCO_SECOND_TO_STS ? 1 : 0;
 197    g_assert(ret == 1);
 198
 199    stop_tco(&d);
 200    test_end(&d);
 201}
 202
 203static void test_tco_max_timeout(void)
 204{
 205    TestData d;
 206    const uint16_t ticks = 0xffff;
 207    uint32_t val;
 208    int ret;
 209
 210    d.args = NULL;
 211    d.noreboot = true;
 212    test_init(&d);
 213
 214    stop_tco(&d);
 215    clear_tco_status(&d);
 216    reset_on_second_timeout(false);
 217    set_tco_timeout(&d, ticks);
 218    load_tco(&d);
 219    start_tco(&d);
 220    clock_step(((ticks & TCO_TMR_MASK) - 1) * TCO_TICK_NSEC);
 221
 222    val = qpci_io_readw(d.dev, d.tco_io_bar, TCO_RLD);
 223    g_assert_cmpint(val & TCO_RLD_MASK, ==, 1);
 224    val = qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS);
 225    ret = val & TCO_TIMEOUT ? 1 : 0;
 226    g_assert(ret == 0);
 227    clock_step(TCO_TICK_NSEC);
 228    val = qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS);
 229    ret = val & TCO_TIMEOUT ? 1 : 0;
 230    g_assert(ret == 1);
 231
 232    stop_tco(&d);
 233    test_end(&d);
 234}
 235
 236static QDict *get_watchdog_action(void)
 237{
 238    QDict *ev = qmp("");
 239    QDict *data;
 240    g_assert(!strcmp(qdict_get_str(ev, "event"), "WATCHDOG"));
 241
 242    data = qdict_get_qdict(ev, "data");
 243    QINCREF(data);
 244    QDECREF(ev);
 245    return data;
 246}
 247
 248static void test_tco_second_timeout_pause(void)
 249{
 250    TestData td;
 251    const uint16_t ticks = TCO_SECS_TO_TICKS(32);
 252    QDict *ad;
 253
 254    td.args = "-watchdog-action pause";
 255    td.noreboot = false;
 256    test_init(&td);
 257
 258    stop_tco(&td);
 259    clear_tco_status(&td);
 260    reset_on_second_timeout(true);
 261    set_tco_timeout(&td, TCO_SECS_TO_TICKS(16));
 262    load_tco(&td);
 263    start_tco(&td);
 264    clock_step(ticks * TCO_TICK_NSEC * 2);
 265    ad = get_watchdog_action();
 266    g_assert(!strcmp(qdict_get_str(ad, "action"), "pause"));
 267    QDECREF(ad);
 268
 269    stop_tco(&td);
 270    test_end(&td);
 271}
 272
 273static void test_tco_second_timeout_reset(void)
 274{
 275    TestData td;
 276    const uint16_t ticks = TCO_SECS_TO_TICKS(16);
 277    QDict *ad;
 278
 279    td.args = "-watchdog-action reset";
 280    td.noreboot = false;
 281    test_init(&td);
 282
 283    stop_tco(&td);
 284    clear_tco_status(&td);
 285    reset_on_second_timeout(true);
 286    set_tco_timeout(&td, TCO_SECS_TO_TICKS(16));
 287    load_tco(&td);
 288    start_tco(&td);
 289    clock_step(ticks * TCO_TICK_NSEC * 2);
 290    ad = get_watchdog_action();
 291    g_assert(!strcmp(qdict_get_str(ad, "action"), "reset"));
 292    QDECREF(ad);
 293
 294    stop_tco(&td);
 295    test_end(&td);
 296}
 297
 298static void test_tco_second_timeout_shutdown(void)
 299{
 300    TestData td;
 301    const uint16_t ticks = TCO_SECS_TO_TICKS(128);
 302    QDict *ad;
 303
 304    td.args = "-watchdog-action shutdown";
 305    td.noreboot = false;
 306    test_init(&td);
 307
 308    stop_tco(&td);
 309    clear_tco_status(&td);
 310    reset_on_second_timeout(true);
 311    set_tco_timeout(&td, ticks);
 312    load_tco(&td);
 313    start_tco(&td);
 314    clock_step(ticks * TCO_TICK_NSEC * 2);
 315    ad = get_watchdog_action();
 316    g_assert(!strcmp(qdict_get_str(ad, "action"), "shutdown"));
 317    QDECREF(ad);
 318
 319    stop_tco(&td);
 320    test_end(&td);
 321}
 322
 323static void test_tco_second_timeout_none(void)
 324{
 325    TestData td;
 326    const uint16_t ticks = TCO_SECS_TO_TICKS(256);
 327    QDict *ad;
 328
 329    td.args = "-watchdog-action none";
 330    td.noreboot = false;
 331    test_init(&td);
 332
 333    stop_tco(&td);
 334    clear_tco_status(&td);
 335    reset_on_second_timeout(true);
 336    set_tco_timeout(&td, ticks);
 337    load_tco(&td);
 338    start_tco(&td);
 339    clock_step(ticks * TCO_TICK_NSEC * 2);
 340    ad = get_watchdog_action();
 341    g_assert(!strcmp(qdict_get_str(ad, "action"), "none"));
 342    QDECREF(ad);
 343
 344    stop_tco(&td);
 345    test_end(&td);
 346}
 347
 348static void test_tco_ticks_counter(void)
 349{
 350    TestData d;
 351    uint16_t ticks = TCO_SECS_TO_TICKS(8);
 352    uint16_t rld;
 353
 354    d.args = NULL;
 355    d.noreboot = true;
 356    test_init(&d);
 357
 358    stop_tco(&d);
 359    clear_tco_status(&d);
 360    reset_on_second_timeout(false);
 361    set_tco_timeout(&d, ticks);
 362    load_tco(&d);
 363    start_tco(&d);
 364
 365    do {
 366        rld = qpci_io_readw(d.dev, d.tco_io_bar, TCO_RLD) & TCO_RLD_MASK;
 367        g_assert_cmpint(rld, ==, ticks);
 368        clock_step(TCO_TICK_NSEC);
 369        ticks--;
 370    } while (!(qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS) & TCO_TIMEOUT));
 371
 372    stop_tco(&d);
 373    test_end(&d);
 374}
 375
 376static void test_tco1_control_bits(void)
 377{
 378    TestData d;
 379    uint16_t val;
 380
 381    d.args = NULL;
 382    d.noreboot = true;
 383    test_init(&d);
 384
 385    val = TCO_LOCK;
 386    qpci_io_writew(d.dev, d.tco_io_bar, TCO1_CNT, val);
 387    val &= ~TCO_LOCK;
 388    qpci_io_writew(d.dev, d.tco_io_bar, TCO1_CNT, val);
 389    g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO1_CNT), ==,
 390                    TCO_LOCK);
 391    test_end(&d);
 392}
 393
 394static void test_tco1_status_bits(void)
 395{
 396    TestData d;
 397    uint16_t ticks = 8;
 398    uint16_t val;
 399    int ret;
 400
 401    d.args = NULL;
 402    d.noreboot = true;
 403    test_init(&d);
 404
 405    stop_tco(&d);
 406    clear_tco_status(&d);
 407    reset_on_second_timeout(false);
 408    set_tco_timeout(&d, ticks);
 409    load_tco(&d);
 410    start_tco(&d);
 411    clock_step(ticks * TCO_TICK_NSEC);
 412
 413    qpci_io_writeb(d.dev, d.tco_io_bar, TCO_DAT_IN, 0);
 414    qpci_io_writeb(d.dev, d.tco_io_bar, TCO_DAT_OUT, 0);
 415    val = qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS);
 416    ret = val & (TCO_TIMEOUT | SW_TCO_SMI | TCO_INT_STS) ? 1 : 0;
 417    g_assert(ret == 1);
 418    qpci_io_writew(d.dev, d.tco_io_bar, TCO1_STS, val);
 419    g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS), ==, 0);
 420    test_end(&d);
 421}
 422
 423static void test_tco2_status_bits(void)
 424{
 425    TestData d;
 426    uint16_t ticks = 8;
 427    uint16_t val;
 428    int ret;
 429
 430    d.args = NULL;
 431    d.noreboot = true;
 432    test_init(&d);
 433
 434    stop_tco(&d);
 435    clear_tco_status(&d);
 436    reset_on_second_timeout(true);
 437    set_tco_timeout(&d, ticks);
 438    load_tco(&d);
 439    start_tco(&d);
 440    clock_step(ticks * TCO_TICK_NSEC * 2);
 441
 442    val = qpci_io_readw(d.dev, d.tco_io_bar, TCO2_STS);
 443    ret = val & (TCO_SECOND_TO_STS | TCO_BOOT_STS) ? 1 : 0;
 444    g_assert(ret == 1);
 445    qpci_io_writew(d.dev, d.tco_io_bar, TCO2_STS, val);
 446    g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO2_STS), ==, 0);
 447    test_end(&d);
 448}
 449
 450int main(int argc, char **argv)
 451{
 452    g_test_init(&argc, &argv, NULL);
 453
 454    qtest_add_func("tco/defaults", test_tco_defaults);
 455    qtest_add_func("tco/timeout/no_action", test_tco_timeout);
 456    qtest_add_func("tco/timeout/no_action/max", test_tco_max_timeout);
 457    qtest_add_func("tco/second_timeout/pause", test_tco_second_timeout_pause);
 458    qtest_add_func("tco/second_timeout/reset", test_tco_second_timeout_reset);
 459    qtest_add_func("tco/second_timeout/shutdown",
 460                   test_tco_second_timeout_shutdown);
 461    qtest_add_func("tco/second_timeout/none", test_tco_second_timeout_none);
 462    qtest_add_func("tco/counter", test_tco_ticks_counter);
 463    qtest_add_func("tco/tco1_control/bits", test_tco1_control_bits);
 464    qtest_add_func("tco/tco1_status/bits", test_tco1_status_bits);
 465    qtest_add_func("tco/tco2_status/bits", test_tco2_status_bits);
 466    return g_test_run();
 467}
 468