4 * Copyright IBM, Corp. 2011
7 * Anthony Liguori <aliguori@us.ibm.com>
9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
10 * See the COPYING file in the top-level directory.
14 #include "qemu/osdep.h"
15 #include "sysemu/qtest.h"
17 #include "sysemu/char.h"
18 #include "exec/ioport.h"
19 #include "exec/memory.h"
21 #include "sysemu/accel.h"
22 #include "sysemu/sysemu.h"
23 #include "sysemu/cpus.h"
24 #include "qemu/config-file.h"
25 #include "qemu/option.h"
26 #include "qemu/error-report.h"
32 static DeviceState *irq_intercept_dev;
33 static FILE *qtest_log_fp;
34 static CharDriverState *qtest_chr;
35 static GString *inbuf;
36 static int irq_levels[MAX_IRQ];
37 static qemu_timeval start_time;
38 static bool qtest_opened;
40 #define FMT_timeval "%ld.%06ld"
45 * Line based protocol, request/response based. Server can send async messages
46 * so clients should always handle many async messages before the response
53 * The qtest client is completely in charge of the QEMU_CLOCK_VIRTUAL. qtest commands
54 * let you adjust the value of the clock (monotonically). All the commands
55 * return the current value of the clock in nanoseconds.
60 * Advance the clock to the next deadline. Useful when waiting for
61 * asynchronous events.
66 * Advance the clock by NS nanoseconds.
71 * Advance the clock to NS nanoseconds (do nothing if it's already past).
73 * PIO and memory access:
102 * > writeq ADDR VALUE
120 * > write ADDR SIZE DATA
123 * > b64read ADDR SIZE
126 * > b64write ADDR SIZE B64_DATA
129 * > memset ADDR SIZE VALUE
132 * ADDR, SIZE, VALUE are all integers parsed with strtoul() with a base of 0.
134 * DATA is an arbitrarily long hex number prefixed with '0x'. If it's smaller
135 * than the expected size, the value will be zero filled at the end of the data
138 * B64_DATA is an arbitrarily long base64 encoded string.
139 * If the sizes do not match, the data will be truncated.
143 * > irq_intercept_in QOM-PATH
146 * > irq_intercept_out QOM-PATH
149 * Attach to the gpio-in (resp. gpio-out) pins exported by the device at
150 * QOM-PATH. When the pin is triggered, one of the following async messages
151 * will be printed to the qtest stream:
156 * where NUM is an IRQ number. For the PC, interrupts can be intercepted
157 * simply with "irq_intercept_in ioapic" (note that IRQ0 comes out with
158 * NUM=0 even though it is remapped to GSI 2).
161 static int hex2nib(char ch)
163 if (ch >= '0' && ch <= '9') {
165 } else if (ch >= 'a' && ch <= 'f') {
166 return 10 + (ch - 'a');
167 } else if (ch >= 'A' && ch <= 'F') {
168 return 10 + (ch - 'A');
174 static void qtest_get_time(qemu_timeval *tv)
176 qemu_gettimeofday(tv);
177 tv->tv_sec -= start_time.tv_sec;
178 tv->tv_usec -= start_time.tv_usec;
179 if (tv->tv_usec < 0) {
180 tv->tv_usec += 1000000;
185 static void qtest_send_prefix(CharDriverState *chr)
189 if (!qtest_log_fp || !qtest_opened) {
194 fprintf(qtest_log_fp, "[S +" FMT_timeval "] ",
195 (long) tv.tv_sec, (long) tv.tv_usec);
198 static void GCC_FMT_ATTR(1, 2) qtest_log_send(const char *fmt, ...)
202 if (!qtest_log_fp || !qtest_opened) {
206 qtest_send_prefix(NULL);
209 vfprintf(qtest_log_fp, fmt, ap);
213 static void do_qtest_send(CharDriverState *chr, const char *str, size_t len)
215 qemu_chr_fe_write_all(chr, (uint8_t *)str, len);
216 if (qtest_log_fp && qtest_opened) {
217 fprintf(qtest_log_fp, "%s", str);
221 static void qtest_send(CharDriverState *chr, const char *str)
223 do_qtest_send(chr, str, strlen(str));
226 static void GCC_FMT_ATTR(2, 3) qtest_sendf(CharDriverState *chr,
227 const char *fmt, ...)
233 buffer = g_strdup_vprintf(fmt, ap);
234 qtest_send(chr, buffer);
238 static void qtest_irq_handler(void *opaque, int n, int level)
240 qemu_irq old_irq = *(qemu_irq *)opaque;
241 qemu_set_irq(old_irq, level);
243 if (irq_levels[n] != level) {
244 CharDriverState *chr = qtest_chr;
245 irq_levels[n] = level;
246 qtest_send_prefix(chr);
247 qtest_sendf(chr, "IRQ %s %d\n",
248 level ? "raise" : "lower", n);
252 static void qtest_process_command(CharDriverState *chr, gchar **words)
254 const gchar *command;
265 fprintf(qtest_log_fp, "[R +" FMT_timeval "]",
266 (long) tv.tv_sec, (long) tv.tv_usec);
267 for (i = 0; words[i]; i++) {
268 fprintf(qtest_log_fp, " %s", words[i]);
270 fprintf(qtest_log_fp, "\n");
274 if (strcmp(words[0], "irq_intercept_out") == 0
275 || strcmp(words[0], "irq_intercept_in") == 0) {
280 dev = DEVICE(object_resolve_path(words[1], NULL));
282 qtest_send_prefix(chr);
283 qtest_send(chr, "FAIL Unknown device\n");
287 if (irq_intercept_dev) {
288 qtest_send_prefix(chr);
289 if (irq_intercept_dev != dev) {
290 qtest_send(chr, "FAIL IRQ intercept already enabled\n");
292 qtest_send(chr, "OK\n");
297 QLIST_FOREACH(ngl, &dev->gpios, node) {
298 /* We don't support intercept of named GPIOs yet */
302 if (words[0][14] == 'o') {
304 for (i = 0; i < ngl->num_out; ++i) {
305 qemu_irq *disconnected = g_new0(qemu_irq, 1);
306 qemu_irq icpt = qemu_allocate_irq(qtest_irq_handler,
309 *disconnected = qdev_intercept_gpio_out(dev, icpt,
313 qemu_irq_intercept_in(ngl->in, qtest_irq_handler,
317 irq_intercept_dev = dev;
318 qtest_send_prefix(chr);
319 qtest_send(chr, "OK\n");
321 } else if (strcmp(words[0], "outb") == 0 ||
322 strcmp(words[0], "outw") == 0 ||
323 strcmp(words[0], "outl") == 0) {
327 g_assert(words[1] && words[2]);
328 addr = strtoul(words[1], NULL, 0);
329 value = strtoul(words[2], NULL, 0);
331 if (words[0][3] == 'b') {
332 cpu_outb(addr, value);
333 } else if (words[0][3] == 'w') {
334 cpu_outw(addr, value);
335 } else if (words[0][3] == 'l') {
336 cpu_outl(addr, value);
338 qtest_send_prefix(chr);
339 qtest_send(chr, "OK\n");
340 } else if (strcmp(words[0], "inb") == 0 ||
341 strcmp(words[0], "inw") == 0 ||
342 strcmp(words[0], "inl") == 0) {
344 uint32_t value = -1U;
347 addr = strtoul(words[1], NULL, 0);
349 if (words[0][2] == 'b') {
350 value = cpu_inb(addr);
351 } else if (words[0][2] == 'w') {
352 value = cpu_inw(addr);
353 } else if (words[0][2] == 'l') {
354 value = cpu_inl(addr);
356 qtest_send_prefix(chr);
357 qtest_sendf(chr, "OK 0x%04x\n", value);
358 } else if (strcmp(words[0], "writeb") == 0 ||
359 strcmp(words[0], "writew") == 0 ||
360 strcmp(words[0], "writel") == 0 ||
361 strcmp(words[0], "writeq") == 0) {
365 g_assert(words[1] && words[2]);
366 addr = strtoull(words[1], NULL, 0);
367 value = strtoull(words[2], NULL, 0);
369 if (words[0][5] == 'b') {
370 uint8_t data = value;
371 cpu_physical_memory_write(addr, &data, 1);
372 } else if (words[0][5] == 'w') {
373 uint16_t data = value;
375 cpu_physical_memory_write(addr, &data, 2);
376 } else if (words[0][5] == 'l') {
377 uint32_t data = value;
379 cpu_physical_memory_write(addr, &data, 4);
380 } else if (words[0][5] == 'q') {
381 uint64_t data = value;
383 cpu_physical_memory_write(addr, &data, 8);
385 qtest_send_prefix(chr);
386 qtest_send(chr, "OK\n");
387 } else if (strcmp(words[0], "readb") == 0 ||
388 strcmp(words[0], "readw") == 0 ||
389 strcmp(words[0], "readl") == 0 ||
390 strcmp(words[0], "readq") == 0) {
392 uint64_t value = UINT64_C(-1);
395 addr = strtoull(words[1], NULL, 0);
397 if (words[0][4] == 'b') {
399 cpu_physical_memory_read(addr, &data, 1);
401 } else if (words[0][4] == 'w') {
403 cpu_physical_memory_read(addr, &data, 2);
404 value = tswap16(data);
405 } else if (words[0][4] == 'l') {
407 cpu_physical_memory_read(addr, &data, 4);
408 value = tswap32(data);
409 } else if (words[0][4] == 'q') {
410 cpu_physical_memory_read(addr, &value, 8);
413 qtest_send_prefix(chr);
414 qtest_sendf(chr, "OK 0x%016" PRIx64 "\n", value);
415 } else if (strcmp(words[0], "read") == 0) {
416 uint64_t addr, len, i;
420 g_assert(words[1] && words[2]);
421 addr = strtoull(words[1], NULL, 0);
422 len = strtoull(words[2], NULL, 0);
424 data = g_malloc(len);
425 cpu_physical_memory_read(addr, data, len);
427 enc = g_malloc(2 * len + 1);
428 for (i = 0; i < len; i++) {
429 sprintf(&enc[i * 2], "%02x", data[i]);
432 qtest_send_prefix(chr);
433 qtest_sendf(chr, "OK 0x%s\n", enc);
437 } else if (strcmp(words[0], "b64read") == 0) {
442 g_assert(words[1] && words[2]);
443 addr = strtoull(words[1], NULL, 0);
444 len = strtoull(words[2], NULL, 0);
446 data = g_malloc(len);
447 cpu_physical_memory_read(addr, data, len);
448 b64_data = g_base64_encode(data, len);
449 qtest_send_prefix(chr);
450 qtest_sendf(chr, "OK %s\n", b64_data);
454 } else if (strcmp(words[0], "write") == 0) {
455 uint64_t addr, len, i;
459 g_assert(words[1] && words[2] && words[3]);
460 addr = strtoull(words[1], NULL, 0);
461 len = strtoull(words[2], NULL, 0);
463 data_len = strlen(words[3]);
465 qtest_send(chr, "ERR invalid argument size\n");
469 data = g_malloc(len);
470 for (i = 0; i < len; i++) {
471 if ((i * 2 + 4) <= data_len) {
472 data[i] = hex2nib(words[3][i * 2 + 2]) << 4;
473 data[i] |= hex2nib(words[3][i * 2 + 3]);
478 cpu_physical_memory_write(addr, data, len);
481 qtest_send_prefix(chr);
482 qtest_send(chr, "OK\n");
483 } else if (strcmp(words[0], "memset") == 0) {
488 g_assert(words[1] && words[2] && words[3]);
489 addr = strtoull(words[1], NULL, 0);
490 len = strtoull(words[2], NULL, 0);
491 pattern = strtoull(words[3], NULL, 0);
493 data = g_malloc(len);
494 memset(data, pattern, len);
495 cpu_physical_memory_write(addr, data, len);
498 qtest_send_prefix(chr);
499 qtest_send(chr, "OK\n");
500 } else if (strcmp(words[0], "b64write") == 0) {
506 g_assert(words[1] && words[2] && words[3]);
507 addr = strtoull(words[1], NULL, 0);
508 len = strtoull(words[2], NULL, 0);
510 data_len = strlen(words[3]);
512 qtest_send(chr, "ERR invalid argument size\n");
516 data = g_base64_decode_inplace(words[3], &out_len);
517 if (out_len != len) {
518 qtest_log_send("b64write: data length mismatch (told %"PRIu64", "
521 out_len = MIN(out_len, len);
524 cpu_physical_memory_write(addr, data, out_len);
526 qtest_send_prefix(chr);
527 qtest_send(chr, "OK\n");
528 } else if (qtest_enabled() && strcmp(words[0], "clock_step") == 0) {
532 ns = strtoll(words[1], NULL, 0);
534 ns = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL);
536 qtest_clock_warp(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + ns);
537 qtest_send_prefix(chr);
538 qtest_sendf(chr, "OK %"PRIi64"\n",
539 (int64_t)qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
540 } else if (qtest_enabled() && strcmp(words[0], "clock_set") == 0) {
544 ns = strtoll(words[1], NULL, 0);
545 qtest_clock_warp(ns);
546 qtest_send_prefix(chr);
547 qtest_sendf(chr, "OK %"PRIi64"\n",
548 (int64_t)qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
550 qtest_send_prefix(chr);
551 qtest_sendf(chr, "FAIL Unknown command '%s'\n", words[0]);
555 static void qtest_process_inbuf(CharDriverState *chr, GString *inbuf)
559 while ((end = strchr(inbuf->str, '\n')) != NULL) {
564 offset = end - inbuf->str;
566 cmd = g_string_new_len(inbuf->str, offset);
567 g_string_erase(inbuf, 0, offset + 1);
569 words = g_strsplit(cmd->str, " ", 0);
570 qtest_process_command(chr, words);
573 g_string_free(cmd, TRUE);
577 static void qtest_read(void *opaque, const uint8_t *buf, int size)
579 CharDriverState *chr = opaque;
581 g_string_append_len(inbuf, (const gchar *)buf, size);
582 qtest_process_inbuf(chr, inbuf);
585 static int qtest_can_read(void *opaque)
590 static void qtest_event(void *opaque, int event)
595 case CHR_EVENT_OPENED:
597 * We used to call qemu_system_reset() here, hoping we could
598 * use the same process for multiple tests that way. Never
599 * used. Injects an extra reset even when it's not used, and
600 * that can mess up tests, e.g. -boot once.
602 for (i = 0; i < ARRAY_SIZE(irq_levels); i++) {
605 qemu_gettimeofday(&start_time);
608 fprintf(qtest_log_fp, "[I " FMT_timeval "] OPENED\n",
609 (long) start_time.tv_sec, (long) start_time.tv_usec);
612 case CHR_EVENT_CLOSED:
613 qtest_opened = false;
617 fprintf(qtest_log_fp, "[I +" FMT_timeval "] CLOSED\n",
618 (long) tv.tv_sec, (long) tv.tv_usec);
626 static int qtest_init_accel(MachineState *ms)
628 QemuOpts *opts = qemu_opts_create(qemu_find_opts("icount"), NULL, 0,
630 qemu_opt_set(opts, "shift", "0", &error_abort);
631 configure_icount(opts, &error_abort);
636 void qtest_init(const char *qtest_chrdev, const char *qtest_log, Error **errp)
638 CharDriverState *chr;
640 chr = qemu_chr_new("qtest", qtest_chrdev, NULL);
643 error_setg(errp, "Failed to initialize device for qtest: \"%s\"",
649 if (strcmp(qtest_log, "none") != 0) {
650 qtest_log_fp = fopen(qtest_log, "w+");
653 qtest_log_fp = stderr;
656 qemu_chr_add_handlers(chr, qtest_can_read, qtest_read, qtest_event, chr);
657 qemu_chr_fe_set_echo(chr, true);
659 inbuf = g_string_new("");
663 bool qtest_driver(void)
668 static void qtest_accel_class_init(ObjectClass *oc, void *data)
670 AccelClass *ac = ACCEL_CLASS(oc);
672 ac->available = qtest_available;
673 ac->init_machine = qtest_init_accel;
674 ac->allowed = &qtest_allowed;
677 #define TYPE_QTEST_ACCEL ACCEL_CLASS_NAME("qtest")
679 static const TypeInfo qtest_accel_type = {
680 .name = TYPE_QTEST_ACCEL,
681 .parent = TYPE_ACCEL,
682 .class_init = qtest_accel_class_init,
685 static void qtest_type_init(void)
687 type_register_static(&qtest_accel_type);
690 type_init(qtest_type_init);