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 "sysemu/qtest.h"
16 #include "sysemu/char.h"
17 #include "exec/ioport.h"
18 #include "exec/memory.h"
20 #include "sysemu/sysemu.h"
21 #include "sysemu/cpus.h"
27 static DeviceState *irq_intercept_dev;
28 static FILE *qtest_log_fp;
29 static CharDriverState *qtest_chr;
30 static GString *inbuf;
31 static int irq_levels[MAX_IRQ];
32 static qemu_timeval start_time;
33 static bool qtest_opened;
35 #define FMT_timeval "%ld.%06ld"
40 * Line based protocol, request/response based. Server can send async messages
41 * so clients should always handle many async messages before the response
48 * The qtest client is completely in charge of the QEMU_CLOCK_VIRTUAL. qtest commands
49 * let you adjust the value of the clock (monotonically). All the commands
50 * return the current value of the clock in nanoseconds.
55 * Advance the clock to the next deadline. Useful when waiting for
56 * asynchronous events.
61 * Advance the clock by NS nanoseconds.
66 * Advance the clock to NS nanoseconds (do nothing if it's already past).
68 * PIO and memory access:
115 * > write ADDR SIZE DATA
118 * ADDR, SIZE, VALUE are all integers parsed with strtoul() with a base of 0.
120 * DATA is an arbitrarily long hex number prefixed with '0x'. If it's smaller
121 * than the expected size, the value will be zero filled at the end of the data
126 * > irq_intercept_in QOM-PATH
129 * > irq_intercept_out QOM-PATH
132 * Attach to the gpio-in (resp. gpio-out) pins exported by the device at
133 * QOM-PATH. When the pin is triggered, one of the following async messages
134 * will be printed to the qtest stream:
139 * where NUM is an IRQ number. For the PC, interrupts can be intercepted
140 * simply with "irq_intercept_in ioapic" (note that IRQ0 comes out with
141 * NUM=0 even though it is remapped to GSI 2).
144 static int hex2nib(char ch)
146 if (ch >= '0' && ch <= '9') {
148 } else if (ch >= 'a' && ch <= 'f') {
149 return 10 + (ch - 'a');
150 } else if (ch >= 'A' && ch <= 'F') {
151 return 10 + (ch - 'a');
157 static void qtest_get_time(qemu_timeval *tv)
159 qemu_gettimeofday(tv);
160 tv->tv_sec -= start_time.tv_sec;
161 tv->tv_usec -= start_time.tv_usec;
162 if (tv->tv_usec < 0) {
163 tv->tv_usec += 1000000;
168 static void qtest_send_prefix(CharDriverState *chr)
172 if (!qtest_log_fp || !qtest_opened) {
177 fprintf(qtest_log_fp, "[S +" FMT_timeval "] ",
178 (long) tv.tv_sec, (long) tv.tv_usec);
181 static void GCC_FMT_ATTR(2, 3) qtest_send(CharDriverState *chr,
182 const char *fmt, ...)
189 len = vsnprintf(buffer, sizeof(buffer), fmt, ap);
192 qemu_chr_fe_write_all(chr, (uint8_t *)buffer, len);
193 if (qtest_log_fp && qtest_opened) {
194 fprintf(qtest_log_fp, "%s", buffer);
198 static void qtest_irq_handler(void *opaque, int n, int level)
200 qemu_irq *old_irqs = opaque;
201 qemu_set_irq(old_irqs[n], level);
203 if (irq_levels[n] != level) {
204 CharDriverState *chr = qtest_chr;
205 irq_levels[n] = level;
206 qtest_send_prefix(chr);
207 qtest_send(chr, "IRQ %s %d\n",
208 level ? "raise" : "lower", n);
212 static void qtest_process_command(CharDriverState *chr, gchar **words)
214 const gchar *command;
225 fprintf(qtest_log_fp, "[R +" FMT_timeval "]",
226 (long) tv.tv_sec, (long) tv.tv_usec);
227 for (i = 0; words[i]; i++) {
228 fprintf(qtest_log_fp, " %s", words[i]);
230 fprintf(qtest_log_fp, "\n");
234 if (strcmp(words[0], "irq_intercept_out") == 0
235 || strcmp(words[0], "irq_intercept_in") == 0) {
240 dev = DEVICE(object_resolve_path(words[1], NULL));
242 qtest_send_prefix(chr);
243 qtest_send(chr, "FAIL Unknown device\n");
247 if (irq_intercept_dev) {
248 qtest_send_prefix(chr);
249 if (irq_intercept_dev != dev) {
250 qtest_send(chr, "FAIL IRQ intercept already enabled\n");
252 qtest_send(chr, "OK\n");
257 QLIST_FOREACH(ngl, &dev->gpios, node) {
258 /* We don't support intercept of named GPIOs yet */
262 if (words[0][14] == 'o') {
263 qemu_irq_intercept_out(&ngl->out, qtest_irq_handler,
266 qemu_irq_intercept_in(ngl->in, qtest_irq_handler,
270 irq_intercept_dev = dev;
271 qtest_send_prefix(chr);
272 qtest_send(chr, "OK\n");
274 } else if (strcmp(words[0], "outb") == 0 ||
275 strcmp(words[0], "outw") == 0 ||
276 strcmp(words[0], "outl") == 0) {
280 g_assert(words[1] && words[2]);
281 addr = strtoul(words[1], NULL, 0);
282 value = strtoul(words[2], NULL, 0);
284 if (words[0][3] == 'b') {
285 cpu_outb(addr, value);
286 } else if (words[0][3] == 'w') {
287 cpu_outw(addr, value);
288 } else if (words[0][3] == 'l') {
289 cpu_outl(addr, value);
291 qtest_send_prefix(chr);
292 qtest_send(chr, "OK\n");
293 } else if (strcmp(words[0], "inb") == 0 ||
294 strcmp(words[0], "inw") == 0 ||
295 strcmp(words[0], "inl") == 0) {
297 uint32_t value = -1U;
300 addr = strtoul(words[1], NULL, 0);
302 if (words[0][2] == 'b') {
303 value = cpu_inb(addr);
304 } else if (words[0][2] == 'w') {
305 value = cpu_inw(addr);
306 } else if (words[0][2] == 'l') {
307 value = cpu_inl(addr);
309 qtest_send_prefix(chr);
310 qtest_send(chr, "OK 0x%04x\n", value);
311 } else if (strcmp(words[0], "writeb") == 0 ||
312 strcmp(words[0], "writew") == 0 ||
313 strcmp(words[0], "writel") == 0 ||
314 strcmp(words[0], "writeq") == 0) {
318 g_assert(words[1] && words[2]);
319 addr = strtoull(words[1], NULL, 0);
320 value = strtoull(words[2], NULL, 0);
322 if (words[0][5] == 'b') {
323 uint8_t data = value;
324 cpu_physical_memory_write(addr, &data, 1);
325 } else if (words[0][5] == 'w') {
326 uint16_t data = value;
328 cpu_physical_memory_write(addr, &data, 2);
329 } else if (words[0][5] == 'l') {
330 uint32_t data = value;
332 cpu_physical_memory_write(addr, &data, 4);
333 } else if (words[0][5] == 'q') {
334 uint64_t data = value;
336 cpu_physical_memory_write(addr, &data, 8);
338 qtest_send_prefix(chr);
339 qtest_send(chr, "OK\n");
340 } else if (strcmp(words[0], "readb") == 0 ||
341 strcmp(words[0], "readw") == 0 ||
342 strcmp(words[0], "readl") == 0 ||
343 strcmp(words[0], "readq") == 0) {
345 uint64_t value = UINT64_C(-1);
348 addr = strtoull(words[1], NULL, 0);
350 if (words[0][4] == 'b') {
352 cpu_physical_memory_read(addr, &data, 1);
354 } else if (words[0][4] == 'w') {
356 cpu_physical_memory_read(addr, &data, 2);
357 value = tswap16(data);
358 } else if (words[0][4] == 'l') {
360 cpu_physical_memory_read(addr, &data, 4);
361 value = tswap32(data);
362 } else if (words[0][4] == 'q') {
363 cpu_physical_memory_read(addr, &value, 8);
366 qtest_send_prefix(chr);
367 qtest_send(chr, "OK 0x%016" PRIx64 "\n", value);
368 } else if (strcmp(words[0], "read") == 0) {
369 uint64_t addr, len, i;
372 g_assert(words[1] && words[2]);
373 addr = strtoull(words[1], NULL, 0);
374 len = strtoull(words[2], NULL, 0);
376 data = g_malloc(len);
377 cpu_physical_memory_read(addr, data, len);
379 qtest_send_prefix(chr);
380 qtest_send(chr, "OK 0x");
381 for (i = 0; i < len; i++) {
382 qtest_send(chr, "%02x", data[i]);
384 qtest_send(chr, "\n");
387 } else if (strcmp(words[0], "write") == 0) {
388 uint64_t addr, len, i;
392 g_assert(words[1] && words[2] && words[3]);
393 addr = strtoull(words[1], NULL, 0);
394 len = strtoull(words[2], NULL, 0);
396 data_len = strlen(words[3]);
398 qtest_send(chr, "ERR invalid argument size\n");
402 data = g_malloc(len);
403 for (i = 0; i < len; i++) {
404 if ((i * 2 + 4) <= data_len) {
405 data[i] = hex2nib(words[3][i * 2 + 2]) << 4;
406 data[i] |= hex2nib(words[3][i * 2 + 3]);
411 cpu_physical_memory_write(addr, data, len);
414 qtest_send_prefix(chr);
415 qtest_send(chr, "OK\n");
416 } else if (qtest_enabled() && strcmp(words[0], "clock_step") == 0) {
420 ns = strtoll(words[1], NULL, 0);
422 ns = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL);
424 qtest_clock_warp(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + ns);
425 qtest_send_prefix(chr);
426 qtest_send(chr, "OK %"PRIi64"\n", (int64_t)qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
427 } else if (qtest_enabled() && strcmp(words[0], "clock_set") == 0) {
431 ns = strtoll(words[1], NULL, 0);
432 qtest_clock_warp(ns);
433 qtest_send_prefix(chr);
434 qtest_send(chr, "OK %"PRIi64"\n", (int64_t)qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
436 qtest_send_prefix(chr);
437 qtest_send(chr, "FAIL Unknown command `%s'\n", words[0]);
441 static void qtest_process_inbuf(CharDriverState *chr, GString *inbuf)
445 while ((end = strchr(inbuf->str, '\n')) != NULL) {
450 offset = end - inbuf->str;
452 cmd = g_string_new_len(inbuf->str, offset);
453 g_string_erase(inbuf, 0, offset + 1);
455 words = g_strsplit(cmd->str, " ", 0);
456 qtest_process_command(chr, words);
459 g_string_free(cmd, TRUE);
463 static void qtest_read(void *opaque, const uint8_t *buf, int size)
465 CharDriverState *chr = opaque;
467 g_string_append_len(inbuf, (const gchar *)buf, size);
468 qtest_process_inbuf(chr, inbuf);
471 static int qtest_can_read(void *opaque)
476 static void qtest_event(void *opaque, int event)
481 case CHR_EVENT_OPENED:
483 * We used to call qemu_system_reset() here, hoping we could
484 * use the same process for multiple tests that way. Never
485 * used. Injects an extra reset even when it's not used, and
486 * that can mess up tests, e.g. -boot once.
488 for (i = 0; i < ARRAY_SIZE(irq_levels); i++) {
491 qemu_gettimeofday(&start_time);
494 fprintf(qtest_log_fp, "[I " FMT_timeval "] OPENED\n",
495 (long) start_time.tv_sec, (long) start_time.tv_usec);
498 case CHR_EVENT_CLOSED:
499 qtest_opened = false;
503 fprintf(qtest_log_fp, "[I +" FMT_timeval "] CLOSED\n",
504 (long) tv.tv_sec, (long) tv.tv_usec);
512 int qtest_init_accel(MachineClass *mc)
514 configure_icount("0");
519 void qtest_init(const char *qtest_chrdev, const char *qtest_log, Error **errp)
521 CharDriverState *chr;
523 chr = qemu_chr_new("qtest", qtest_chrdev, NULL);
526 error_setg(errp, "Failed to initialize device for qtest: \"%s\"",
531 qemu_chr_add_handlers(chr, qtest_can_read, qtest_read, qtest_event, chr);
532 qemu_chr_fe_set_echo(chr, true);
534 inbuf = g_string_new("");
537 if (strcmp(qtest_log, "none") != 0) {
538 qtest_log_fp = fopen(qtest_log, "w+");
541 qtest_log_fp = stderr;
547 bool qtest_driver(void)