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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 */
681c28a3 9#include "qemu/osdep.h"
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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;
5add35be 42 bool noreboot;
45dcdb9d 43 QPCIDevice *dev;
b4ba67d9 44 QPCIBar tco_io_bar;
34779e8c 45 QPCIBus *bus;
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46} TestData;
47
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48static void test_end(TestData *d)
49{
50 g_free(d->dev);
51 qpci_free_pc(d->bus);
52 qtest_end();
53}
54
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55static void test_init(TestData *d)
56{
45dcdb9d 57 QTestState *qs;
45dcdb9d 58
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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;
45dcdb9d 63 qtest_irq_intercept_in(qs, "ioapic");
45dcdb9d 64
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65 d->bus = qpci_init_pc(NULL);
66 d->dev = qpci_device_find(d->bus, QPCI_DEVFN(0x1f, 0x00));
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67 g_assert(d->dev != NULL);
68
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69 qpci_device_enable(d->dev);
70
45dcdb9d 71 /* set ACPI PM I/O space base address */
c4fc82bf 72 qpci_config_writel(d->dev, ICH9_LPC_PMBASE, PM_IO_BASE_ADDR | 0x1);
45dcdb9d 73 /* enable ACPI I/O */
c4fc82bf 74 qpci_config_writeb(d->dev, ICH9_LPC_ACPI_CTRL, 0x80);
45dcdb9d 75 /* set Root Complex BAR */
c4fc82bf 76 qpci_config_writel(d->dev, ICH9_LPC_RCBA, RCBA_BASE_ADDR | 0x1);
45dcdb9d 77
b4ba67d9 78 d->tco_io_bar = qpci_legacy_iomap(d->dev, PM_IO_BASE_ADDR + 0x60);
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79}
80
81static void stop_tco(const TestData *d)
82{
83 uint32_t val;
84
b4ba67d9 85 val = qpci_io_readw(d->dev, d->tco_io_bar, TCO1_CNT);
45dcdb9d 86 val |= TCO_TMR_HLT;
b4ba67d9 87 qpci_io_writew(d->dev, d->tco_io_bar, TCO1_CNT, val);
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88}
89
90static void start_tco(const TestData *d)
91{
92 uint32_t val;
93
b4ba67d9 94 val = qpci_io_readw(d->dev, d->tco_io_bar, TCO1_CNT);
45dcdb9d 95 val &= ~TCO_TMR_HLT;
b4ba67d9 96 qpci_io_writew(d->dev, d->tco_io_bar, TCO1_CNT, val);
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97}
98
99static void load_tco(const TestData *d)
100{
b4ba67d9 101 qpci_io_writew(d->dev, d->tco_io_bar, TCO_RLD, 4);
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102}
103
104static void set_tco_timeout(const TestData *d, uint16_t ticks)
105{
b4ba67d9 106 qpci_io_writew(d->dev, d->tco_io_bar, TCO_TMR, ticks);
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107}
108
109static void clear_tco_status(const TestData *d)
110{
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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);
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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;
5add35be 134 d.noreboot = true;
45dcdb9d 135 test_init(&d);
b4ba67d9 136 g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO_RLD), ==,
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137 TCO_RLD_DEFAULT);
138 /* TCO_DAT_IN & TCO_DAT_OUT */
b4ba67d9 139 g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO_DAT_IN), ==,
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140 (TCO_DAT_OUT_DEFAULT << 8) | TCO_DAT_IN_DEFAULT);
141 /* TCO1_STS & TCO2_STS */
b4ba67d9 142 g_assert_cmpint(qpci_io_readl(d.dev, d.tco_io_bar, TCO1_STS), ==,
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143 (TCO2_STS_DEFAULT << 16) | TCO1_STS_DEFAULT);
144 /* TCO1_CNT & TCO2_CNT */
b4ba67d9 145 g_assert_cmpint(qpci_io_readl(d.dev, d.tco_io_bar, TCO1_CNT), ==,
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146 (TCO2_CNT_DEFAULT << 16) | TCO1_CNT_DEFAULT);
147 /* TCO_MESSAGE1 & TCO_MESSAGE2 */
b4ba67d9 148 g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO_MESSAGE1), ==,
45dcdb9d 149 (TCO_MESSAGE2_DEFAULT << 8) | TCO_MESSAGE1_DEFAULT);
b4ba67d9 150 g_assert_cmpint(qpci_io_readb(d.dev, d.tco_io_bar, TCO_WDCNT), ==,
45dcdb9d 151 TCO_WDCNT_DEFAULT);
b4ba67d9 152 g_assert_cmpint(qpci_io_readb(d.dev, d.tco_io_bar, SW_IRQ_GEN), ==,
45dcdb9d 153 SW_IRQ_GEN_DEFAULT);
b4ba67d9 154 g_assert_cmpint(qpci_io_readw(d.dev, d.tco_io_bar, TCO_TMR), ==,
45dcdb9d 155 TCO_TMR_DEFAULT);
34779e8c 156 test_end(&d);
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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;
5add35be 167 d.noreboot = true;
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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 */
b4ba67d9 179 val = qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS);
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180 ret = val & TCO_TIMEOUT ? 1 : 0;
181 g_assert(ret == 1);
182
183 /* test clearing timeout bit */
184 val |= TCO_TIMEOUT;
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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);
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187 ret = val & TCO_TIMEOUT ? 1 : 0;
188 g_assert(ret == 0);
189
190 /* test second timeout */
191 clock_step(ticks * TCO_TICK_NSEC);
b4ba67d9 192 val = qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS);
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193 ret = val & TCO_TIMEOUT ? 1 : 0;
194 g_assert(ret == 1);
b4ba67d9 195 val = qpci_io_readw(d.dev, d.tco_io_bar, TCO2_STS);
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196 ret = val & TCO_SECOND_TO_STS ? 1 : 0;
197 g_assert(ret == 1);
198
199 stop_tco(&d);
34779e8c 200 test_end(&d);
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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;
5add35be 211 d.noreboot = true;
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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
b4ba67d9 222 val = qpci_io_readw(d.dev, d.tco_io_bar, TCO_RLD);
45dcdb9d 223 g_assert_cmpint(val & TCO_RLD_MASK, ==, 1);
b4ba67d9 224 val = qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS);
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225 ret = val & TCO_TIMEOUT ? 1 : 0;
226 g_assert(ret == 0);
227 clock_step(TCO_TICK_NSEC);
b4ba67d9 228 val = qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS);
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229 ret = val & TCO_TIMEOUT ? 1 : 0;
230 g_assert(ret == 1);
231
232 stop_tco(&d);
34779e8c 233 test_end(&d);
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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";
5add35be 255 td.noreboot = false;
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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);
34779e8c 270 test_end(&td);
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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";
5add35be 280 td.noreboot = false;
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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);
34779e8c 295 test_end(&td);
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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";
5add35be 305 td.noreboot = false;
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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);
34779e8c 320 test_end(&td);
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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";
5add35be 330 td.noreboot = false;
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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);
34779e8c 345 test_end(&td);
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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;
5add35be 355 d.noreboot = true;
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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 {
b4ba67d9 366 rld = qpci_io_readw(d.dev, d.tco_io_bar, TCO_RLD) & TCO_RLD_MASK;
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367 g_assert_cmpint(rld, ==, ticks);
368 clock_step(TCO_TICK_NSEC);
369 ticks--;
b4ba67d9 370 } while (!(qpci_io_readw(d.dev, d.tco_io_bar, TCO1_STS) & TCO_TIMEOUT));
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371
372 stop_tco(&d);
34779e8c 373 test_end(&d);
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374}
375
376static void test_tco1_control_bits(void)
377{
378 TestData d;
379 uint16_t val;
380
381 d.args = NULL;
5add35be 382 d.noreboot = true;
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383 test_init(&d);
384
385 val = TCO_LOCK;
b4ba67d9 386 qpci_io_writew(d.dev, d.tco_io_bar, TCO1_CNT, val);
45dcdb9d 387 val &= ~TCO_LOCK;
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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), ==,
45dcdb9d 390 TCO_LOCK);
34779e8c 391 test_end(&d);
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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;
5add35be 402 d.noreboot = true;
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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
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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);
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416 ret = val & (TCO_TIMEOUT | SW_TCO_SMI | TCO_INT_STS) ? 1 : 0;
417 g_assert(ret == 1);
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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);
34779e8c 420 test_end(&d);
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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
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430 d.args = NULL;
431 d.noreboot = true;
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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
b4ba67d9 442 val = qpci_io_readw(d.dev, d.tco_io_bar, TCO2_STS);
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443 ret = val & (TCO_SECOND_TO_STS | TCO_BOOT_STS) ? 1 : 0;
444 g_assert(ret == 1);
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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);
34779e8c 447 test_end(&d);
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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}