4 * Copyright IBM, Corp. 2011
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 "qapi/error.h"
16 #include "qemu-common.h"
18 #include "sysemu/qtest.h"
20 #include "chardev/char-fe.h"
21 #include "exec/ioport.h"
22 #include "exec/memory.h"
24 #include "sysemu/accel.h"
25 #include "sysemu/sysemu.h"
26 #include "sysemu/cpus.h"
27 #include "qemu/config-file.h"
28 #include "qemu/option.h"
29 #include "qemu/error-report.h"
30 #include "qemu/cutils.h"
32 #include "hw/ppc/spapr_rtas.h"
39 static DeviceState *irq_intercept_dev;
40 static FILE *qtest_log_fp;
41 static CharBackend qtest_chr;
42 static GString *inbuf;
43 static int irq_levels[MAX_IRQ];
44 static qemu_timeval start_time;
45 static bool qtest_opened;
47 #define FMT_timeval "%ld.%06ld"
52 * Line based protocol, request/response based. Server can send async messages
53 * so clients should always handle many async messages before the response
60 * The qtest client is completely in charge of the QEMU_CLOCK_VIRTUAL. qtest commands
61 * let you adjust the value of the clock (monotonically). All the commands
62 * return the current value of the clock in nanoseconds.
67 * Advance the clock to the next deadline. Useful when waiting for
68 * asynchronous events.
73 * Advance the clock by NS nanoseconds.
78 * Advance the clock to NS nanoseconds (do nothing if it's already past).
80 * PIO and memory access:
100 * > writeb ADDR VALUE
103 * > writew ADDR VALUE
106 * > writel ADDR VALUE
109 * > writeq ADDR VALUE
127 * > write ADDR SIZE DATA
130 * > b64read ADDR SIZE
133 * > b64write ADDR SIZE B64_DATA
136 * > memset ADDR SIZE VALUE
139 * ADDR, SIZE, VALUE are all integers parsed with strtoul() with a base of 0.
140 * For 'memset' a zero size is permitted and does nothing.
142 * DATA is an arbitrarily long hex number prefixed with '0x'. If it's smaller
143 * than the expected size, the value will be zero filled at the end of the data
146 * B64_DATA is an arbitrarily long base64 encoded string.
147 * If the sizes do not match, the data will be truncated.
151 * > irq_intercept_in QOM-PATH
154 * > irq_intercept_out QOM-PATH
157 * Attach to the gpio-in (resp. gpio-out) pins exported by the device at
158 * QOM-PATH. When the pin is triggered, one of the following async messages
159 * will be printed to the qtest stream:
164 * where NUM is an IRQ number. For the PC, interrupts can be intercepted
165 * simply with "irq_intercept_in ioapic" (note that IRQ0 comes out with
166 * NUM=0 even though it is remapped to GSI 2).
169 static int hex2nib(char ch)
171 if (ch >= '0' && ch <= '9') {
173 } else if (ch >= 'a' && ch <= 'f') {
174 return 10 + (ch - 'a');
175 } else if (ch >= 'A' && ch <= 'F') {
176 return 10 + (ch - 'A');
182 static void qtest_get_time(qemu_timeval *tv)
184 qemu_gettimeofday(tv);
185 tv->tv_sec -= start_time.tv_sec;
186 tv->tv_usec -= start_time.tv_usec;
187 if (tv->tv_usec < 0) {
188 tv->tv_usec += 1000000;
193 static void qtest_send_prefix(CharBackend *chr)
197 if (!qtest_log_fp || !qtest_opened) {
202 fprintf(qtest_log_fp, "[S +" FMT_timeval "] ",
203 (long) tv.tv_sec, (long) tv.tv_usec);
206 static void GCC_FMT_ATTR(1, 2) qtest_log_send(const char *fmt, ...)
210 if (!qtest_log_fp || !qtest_opened) {
214 qtest_send_prefix(NULL);
217 vfprintf(qtest_log_fp, fmt, ap);
221 static void do_qtest_send(CharBackend *chr, const char *str, size_t len)
223 qemu_chr_fe_write_all(chr, (uint8_t *)str, len);
224 if (qtest_log_fp && qtest_opened) {
225 fprintf(qtest_log_fp, "%s", str);
229 static void qtest_send(CharBackend *chr, const char *str)
231 do_qtest_send(chr, str, strlen(str));
234 static void GCC_FMT_ATTR(2, 3) qtest_sendf(CharBackend *chr,
235 const char *fmt, ...)
241 buffer = g_strdup_vprintf(fmt, ap);
242 qtest_send(chr, buffer);
247 static void qtest_irq_handler(void *opaque, int n, int level)
249 qemu_irq old_irq = *(qemu_irq *)opaque;
250 qemu_set_irq(old_irq, level);
252 if (irq_levels[n] != level) {
253 CharBackend *chr = &qtest_chr;
254 irq_levels[n] = level;
255 qtest_send_prefix(chr);
256 qtest_sendf(chr, "IRQ %s %d\n",
257 level ? "raise" : "lower", n);
261 static void qtest_process_command(CharBackend *chr, gchar **words)
263 const gchar *command;
274 fprintf(qtest_log_fp, "[R +" FMT_timeval "]",
275 (long) tv.tv_sec, (long) tv.tv_usec);
276 for (i = 0; words[i]; i++) {
277 fprintf(qtest_log_fp, " %s", words[i]);
279 fprintf(qtest_log_fp, "\n");
283 if (strcmp(words[0], "irq_intercept_out") == 0
284 || strcmp(words[0], "irq_intercept_in") == 0) {
289 dev = DEVICE(object_resolve_path(words[1], NULL));
291 qtest_send_prefix(chr);
292 qtest_send(chr, "FAIL Unknown device\n");
296 if (irq_intercept_dev) {
297 qtest_send_prefix(chr);
298 if (irq_intercept_dev != dev) {
299 qtest_send(chr, "FAIL IRQ intercept already enabled\n");
301 qtest_send(chr, "OK\n");
306 QLIST_FOREACH(ngl, &dev->gpios, node) {
307 /* We don't support intercept of named GPIOs yet */
311 if (words[0][14] == 'o') {
313 for (i = 0; i < ngl->num_out; ++i) {
314 qemu_irq *disconnected = g_new0(qemu_irq, 1);
315 qemu_irq icpt = qemu_allocate_irq(qtest_irq_handler,
318 *disconnected = qdev_intercept_gpio_out(dev, icpt,
322 qemu_irq_intercept_in(ngl->in, qtest_irq_handler,
326 irq_intercept_dev = dev;
327 qtest_send_prefix(chr);
328 qtest_send(chr, "OK\n");
330 } else if (strcmp(words[0], "outb") == 0 ||
331 strcmp(words[0], "outw") == 0 ||
332 strcmp(words[0], "outl") == 0) {
337 g_assert(words[1] && words[2]);
338 ret = qemu_strtoul(words[1], NULL, 0, &addr);
340 ret = qemu_strtoul(words[2], NULL, 0, &value);
342 g_assert(addr <= 0xffff);
344 if (words[0][3] == 'b') {
345 cpu_outb(addr, value);
346 } else if (words[0][3] == 'w') {
347 cpu_outw(addr, value);
348 } else if (words[0][3] == 'l') {
349 cpu_outl(addr, value);
351 qtest_send_prefix(chr);
352 qtest_send(chr, "OK\n");
353 } else if (strcmp(words[0], "inb") == 0 ||
354 strcmp(words[0], "inw") == 0 ||
355 strcmp(words[0], "inl") == 0) {
357 uint32_t value = -1U;
361 ret = qemu_strtoul(words[1], NULL, 0, &addr);
363 g_assert(addr <= 0xffff);
365 if (words[0][2] == 'b') {
366 value = cpu_inb(addr);
367 } else if (words[0][2] == 'w') {
368 value = cpu_inw(addr);
369 } else if (words[0][2] == 'l') {
370 value = cpu_inl(addr);
372 qtest_send_prefix(chr);
373 qtest_sendf(chr, "OK 0x%04x\n", value);
374 } else if (strcmp(words[0], "writeb") == 0 ||
375 strcmp(words[0], "writew") == 0 ||
376 strcmp(words[0], "writel") == 0 ||
377 strcmp(words[0], "writeq") == 0) {
382 g_assert(words[1] && words[2]);
383 ret = qemu_strtou64(words[1], NULL, 0, &addr);
385 ret = qemu_strtou64(words[2], NULL, 0, &value);
388 if (words[0][5] == 'b') {
389 uint8_t data = value;
390 cpu_physical_memory_write(addr, &data, 1);
391 } else if (words[0][5] == 'w') {
392 uint16_t data = value;
394 cpu_physical_memory_write(addr, &data, 2);
395 } else if (words[0][5] == 'l') {
396 uint32_t data = value;
398 cpu_physical_memory_write(addr, &data, 4);
399 } else if (words[0][5] == 'q') {
400 uint64_t data = value;
402 cpu_physical_memory_write(addr, &data, 8);
404 qtest_send_prefix(chr);
405 qtest_send(chr, "OK\n");
406 } else if (strcmp(words[0], "readb") == 0 ||
407 strcmp(words[0], "readw") == 0 ||
408 strcmp(words[0], "readl") == 0 ||
409 strcmp(words[0], "readq") == 0) {
411 uint64_t value = UINT64_C(-1);
415 ret = qemu_strtou64(words[1], NULL, 0, &addr);
418 if (words[0][4] == 'b') {
420 cpu_physical_memory_read(addr, &data, 1);
422 } else if (words[0][4] == 'w') {
424 cpu_physical_memory_read(addr, &data, 2);
425 value = tswap16(data);
426 } else if (words[0][4] == 'l') {
428 cpu_physical_memory_read(addr, &data, 4);
429 value = tswap32(data);
430 } else if (words[0][4] == 'q') {
431 cpu_physical_memory_read(addr, &value, 8);
434 qtest_send_prefix(chr);
435 qtest_sendf(chr, "OK 0x%016" PRIx64 "\n", value);
436 } else if (strcmp(words[0], "read") == 0) {
437 uint64_t addr, len, i;
442 g_assert(words[1] && words[2]);
443 ret = qemu_strtou64(words[1], NULL, 0, &addr);
445 ret = qemu_strtou64(words[2], NULL, 0, &len);
447 /* We'd send garbage to libqtest if len is 0 */
450 data = g_malloc(len);
451 cpu_physical_memory_read(addr, data, len);
453 enc = g_malloc(2 * len + 1);
454 for (i = 0; i < len; i++) {
455 sprintf(&enc[i * 2], "%02x", data[i]);
458 qtest_send_prefix(chr);
459 qtest_sendf(chr, "OK 0x%s\n", enc);
463 } else if (strcmp(words[0], "b64read") == 0) {
469 g_assert(words[1] && words[2]);
470 ret = qemu_strtou64(words[1], NULL, 0, &addr);
472 ret = qemu_strtou64(words[2], NULL, 0, &len);
475 data = g_malloc(len);
476 cpu_physical_memory_read(addr, data, len);
477 b64_data = g_base64_encode(data, len);
478 qtest_send_prefix(chr);
479 qtest_sendf(chr, "OK %s\n", b64_data);
483 } else if (strcmp(words[0], "write") == 0) {
484 uint64_t addr, len, i;
489 g_assert(words[1] && words[2] && words[3]);
490 ret = qemu_strtou64(words[1], NULL, 0, &addr);
492 ret = qemu_strtou64(words[2], NULL, 0, &len);
495 data_len = strlen(words[3]);
497 qtest_send(chr, "ERR invalid argument size\n");
501 data = g_malloc(len);
502 for (i = 0; i < len; i++) {
503 if ((i * 2 + 4) <= data_len) {
504 data[i] = hex2nib(words[3][i * 2 + 2]) << 4;
505 data[i] |= hex2nib(words[3][i * 2 + 3]);
510 cpu_physical_memory_write(addr, data, len);
513 qtest_send_prefix(chr);
514 qtest_send(chr, "OK\n");
515 } else if (strcmp(words[0], "memset") == 0) {
518 unsigned long pattern;
521 g_assert(words[1] && words[2] && words[3]);
522 ret = qemu_strtou64(words[1], NULL, 0, &addr);
524 ret = qemu_strtou64(words[2], NULL, 0, &len);
526 ret = qemu_strtoul(words[3], NULL, 0, &pattern);
530 data = g_malloc(len);
531 memset(data, pattern, len);
532 cpu_physical_memory_write(addr, data, len);
536 qtest_send_prefix(chr);
537 qtest_send(chr, "OK\n");
538 } else if (strcmp(words[0], "b64write") == 0) {
545 g_assert(words[1] && words[2] && words[3]);
546 ret = qemu_strtou64(words[1], NULL, 0, &addr);
548 ret = qemu_strtou64(words[2], NULL, 0, &len);
551 data_len = strlen(words[3]);
553 qtest_send(chr, "ERR invalid argument size\n");
557 data = g_base64_decode_inplace(words[3], &out_len);
558 if (out_len != len) {
559 qtest_log_send("b64write: data length mismatch (told %"PRIu64", "
562 out_len = MIN(out_len, len);
565 cpu_physical_memory_write(addr, data, out_len);
567 qtest_send_prefix(chr);
568 qtest_send(chr, "OK\n");
569 } else if (strcmp(words[0], "endianness") == 0) {
570 qtest_send_prefix(chr);
571 #if defined(TARGET_WORDS_BIGENDIAN)
572 qtest_sendf(chr, "OK big\n");
574 qtest_sendf(chr, "OK little\n");
577 } else if (strcmp(words[0], "rtas") == 0) {
578 uint64_t res, args, ret;
579 unsigned long nargs, nret;
582 rc = qemu_strtoul(words[2], NULL, 0, &nargs);
584 rc = qemu_strtou64(words[3], NULL, 0, &args);
586 rc = qemu_strtoul(words[4], NULL, 0, &nret);
588 rc = qemu_strtou64(words[5], NULL, 0, &ret);
590 res = qtest_rtas_call(words[1], nargs, args, nret, ret);
592 qtest_send_prefix(chr);
593 qtest_sendf(chr, "OK %"PRIu64"\n", res);
595 } else if (qtest_enabled() && strcmp(words[0], "clock_step") == 0) {
599 int ret = qemu_strtoi64(words[1], NULL, 0, &ns);
602 ns = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL);
604 qtest_clock_warp(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + ns);
605 qtest_send_prefix(chr);
606 qtest_sendf(chr, "OK %"PRIi64"\n",
607 (int64_t)qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
608 } else if (qtest_enabled() && strcmp(words[0], "clock_set") == 0) {
613 ret = qemu_strtoi64(words[1], NULL, 0, &ns);
615 qtest_clock_warp(ns);
616 qtest_send_prefix(chr);
617 qtest_sendf(chr, "OK %"PRIi64"\n",
618 (int64_t)qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
620 qtest_send_prefix(chr);
621 qtest_sendf(chr, "FAIL Unknown command '%s'\n", words[0]);
625 static void qtest_process_inbuf(CharBackend *chr, GString *inbuf)
629 while ((end = strchr(inbuf->str, '\n')) != NULL) {
634 offset = end - inbuf->str;
636 cmd = g_string_new_len(inbuf->str, offset);
637 g_string_erase(inbuf, 0, offset + 1);
639 words = g_strsplit(cmd->str, " ", 0);
640 qtest_process_command(chr, words);
643 g_string_free(cmd, TRUE);
647 static void qtest_read(void *opaque, const uint8_t *buf, int size)
649 CharBackend *chr = opaque;
651 g_string_append_len(inbuf, (const gchar *)buf, size);
652 qtest_process_inbuf(chr, inbuf);
655 static int qtest_can_read(void *opaque)
660 static void qtest_event(void *opaque, int event)
665 case CHR_EVENT_OPENED:
667 * We used to call qemu_system_reset() here, hoping we could
668 * use the same process for multiple tests that way. Never
669 * used. Injects an extra reset even when it's not used, and
670 * that can mess up tests, e.g. -boot once.
672 for (i = 0; i < ARRAY_SIZE(irq_levels); i++) {
675 qemu_gettimeofday(&start_time);
678 fprintf(qtest_log_fp, "[I " FMT_timeval "] OPENED\n",
679 (long) start_time.tv_sec, (long) start_time.tv_usec);
682 case CHR_EVENT_CLOSED:
683 qtest_opened = false;
687 fprintf(qtest_log_fp, "[I +" FMT_timeval "] CLOSED\n",
688 (long) tv.tv_sec, (long) tv.tv_usec);
696 static int qtest_init_accel(MachineState *ms)
698 QemuOpts *opts = qemu_opts_create(qemu_find_opts("icount"), NULL, 0,
700 qemu_opt_set(opts, "shift", "0", &error_abort);
701 configure_icount(opts, &error_abort);
706 void qtest_init(const char *qtest_chrdev, const char *qtest_log, Error **errp)
710 chr = qemu_chr_new("qtest", qtest_chrdev);
713 error_setg(errp, "Failed to initialize device for qtest: \"%s\"",
719 if (strcmp(qtest_log, "none") != 0) {
720 qtest_log_fp = fopen(qtest_log, "w+");
723 qtest_log_fp = stderr;
726 qemu_chr_fe_init(&qtest_chr, chr, errp);
727 qemu_chr_fe_set_handlers(&qtest_chr, qtest_can_read, qtest_read,
728 qtest_event, NULL, &qtest_chr, NULL, true);
729 qemu_chr_fe_set_echo(&qtest_chr, true);
731 inbuf = g_string_new("");
734 bool qtest_driver(void)
736 return qtest_chr.chr != NULL;
739 static void qtest_accel_class_init(ObjectClass *oc, void *data)
741 AccelClass *ac = ACCEL_CLASS(oc);
743 ac->available = qtest_available;
744 ac->init_machine = qtest_init_accel;
745 ac->allowed = &qtest_allowed;
748 #define TYPE_QTEST_ACCEL ACCEL_CLASS_NAME("qtest")
750 static const TypeInfo qtest_accel_type = {
751 .name = TYPE_QTEST_ACCEL,
752 .parent = TYPE_ACCEL,
753 .class_init = qtest_accel_class_init,
756 static void qtest_type_init(void)
758 type_register_static(&qtest_accel_type);
761 type_init(qtest_type_init);