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 "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) {
239 dev = DEVICE(object_resolve_path(words[1], NULL));
241 qtest_send_prefix(chr);
242 qtest_send(chr, "FAIL Unknown device\n");
246 if (irq_intercept_dev) {
247 qtest_send_prefix(chr);
248 if (irq_intercept_dev != dev) {
249 qtest_send(chr, "FAIL IRQ intercept already enabled\n");
251 qtest_send(chr, "OK\n");
256 if (words[0][14] == 'o') {
257 qemu_irq_intercept_out(&dev->gpio_out, qtest_irq_handler, dev->num_gpio_out);
259 qemu_irq_intercept_in(dev->gpio_in, qtest_irq_handler, dev->num_gpio_in);
261 irq_intercept_dev = dev;
262 qtest_send_prefix(chr);
263 qtest_send(chr, "OK\n");
265 } else if (strcmp(words[0], "outb") == 0 ||
266 strcmp(words[0], "outw") == 0 ||
267 strcmp(words[0], "outl") == 0) {
271 g_assert(words[1] && words[2]);
272 addr = strtoul(words[1], NULL, 0);
273 value = strtoul(words[2], NULL, 0);
275 if (words[0][3] == 'b') {
276 cpu_outb(addr, value);
277 } else if (words[0][3] == 'w') {
278 cpu_outw(addr, value);
279 } else if (words[0][3] == 'l') {
280 cpu_outl(addr, value);
282 qtest_send_prefix(chr);
283 qtest_send(chr, "OK\n");
284 } else if (strcmp(words[0], "inb") == 0 ||
285 strcmp(words[0], "inw") == 0 ||
286 strcmp(words[0], "inl") == 0) {
288 uint32_t value = -1U;
291 addr = strtoul(words[1], NULL, 0);
293 if (words[0][2] == 'b') {
294 value = cpu_inb(addr);
295 } else if (words[0][2] == 'w') {
296 value = cpu_inw(addr);
297 } else if (words[0][2] == 'l') {
298 value = cpu_inl(addr);
300 qtest_send_prefix(chr);
301 qtest_send(chr, "OK 0x%04x\n", value);
302 } else if (strcmp(words[0], "writeb") == 0 ||
303 strcmp(words[0], "writew") == 0 ||
304 strcmp(words[0], "writel") == 0 ||
305 strcmp(words[0], "writeq") == 0) {
309 g_assert(words[1] && words[2]);
310 addr = strtoull(words[1], NULL, 0);
311 value = strtoull(words[2], NULL, 0);
313 if (words[0][5] == 'b') {
314 uint8_t data = value;
315 cpu_physical_memory_write(addr, &data, 1);
316 } else if (words[0][5] == 'w') {
317 uint16_t data = value;
319 cpu_physical_memory_write(addr, &data, 2);
320 } else if (words[0][5] == 'l') {
321 uint32_t data = value;
323 cpu_physical_memory_write(addr, &data, 4);
324 } else if (words[0][5] == 'q') {
325 uint64_t data = value;
327 cpu_physical_memory_write(addr, &data, 8);
329 qtest_send_prefix(chr);
330 qtest_send(chr, "OK\n");
331 } else if (strcmp(words[0], "readb") == 0 ||
332 strcmp(words[0], "readw") == 0 ||
333 strcmp(words[0], "readl") == 0 ||
334 strcmp(words[0], "readq") == 0) {
336 uint64_t value = UINT64_C(-1);
339 addr = strtoull(words[1], NULL, 0);
341 if (words[0][4] == 'b') {
343 cpu_physical_memory_read(addr, &data, 1);
345 } else if (words[0][4] == 'w') {
347 cpu_physical_memory_read(addr, &data, 2);
348 value = tswap16(data);
349 } else if (words[0][4] == 'l') {
351 cpu_physical_memory_read(addr, &data, 4);
352 value = tswap32(data);
353 } else if (words[0][4] == 'q') {
354 cpu_physical_memory_read(addr, &value, 8);
357 qtest_send_prefix(chr);
358 qtest_send(chr, "OK 0x%016" PRIx64 "\n", value);
359 } else if (strcmp(words[0], "read") == 0) {
360 uint64_t addr, len, i;
363 g_assert(words[1] && words[2]);
364 addr = strtoull(words[1], NULL, 0);
365 len = strtoull(words[2], NULL, 0);
367 data = g_malloc(len);
368 cpu_physical_memory_read(addr, data, len);
370 qtest_send_prefix(chr);
371 qtest_send(chr, "OK 0x");
372 for (i = 0; i < len; i++) {
373 qtest_send(chr, "%02x", data[i]);
375 qtest_send(chr, "\n");
378 } else if (strcmp(words[0], "write") == 0) {
379 uint64_t addr, len, i;
383 g_assert(words[1] && words[2] && words[3]);
384 addr = strtoull(words[1], NULL, 0);
385 len = strtoull(words[2], NULL, 0);
387 data_len = strlen(words[3]);
389 qtest_send(chr, "ERR invalid argument size\n");
393 data = g_malloc(len);
394 for (i = 0; i < len; i++) {
395 if ((i * 2 + 4) <= data_len) {
396 data[i] = hex2nib(words[3][i * 2 + 2]) << 4;
397 data[i] |= hex2nib(words[3][i * 2 + 3]);
402 cpu_physical_memory_write(addr, data, len);
405 qtest_send_prefix(chr);
406 qtest_send(chr, "OK\n");
407 } else if (qtest_enabled() && strcmp(words[0], "clock_step") == 0) {
411 ns = strtoll(words[1], NULL, 0);
413 ns = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL);
415 qtest_clock_warp(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + ns);
416 qtest_send_prefix(chr);
417 qtest_send(chr, "OK %"PRIi64"\n", (int64_t)qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
418 } else if (qtest_enabled() && strcmp(words[0], "clock_set") == 0) {
422 ns = strtoll(words[1], NULL, 0);
423 qtest_clock_warp(ns);
424 qtest_send_prefix(chr);
425 qtest_send(chr, "OK %"PRIi64"\n", (int64_t)qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
427 qtest_send_prefix(chr);
428 qtest_send(chr, "FAIL Unknown command `%s'\n", words[0]);
432 static void qtest_process_inbuf(CharDriverState *chr, GString *inbuf)
436 while ((end = strchr(inbuf->str, '\n')) != NULL) {
441 offset = end - inbuf->str;
443 cmd = g_string_new_len(inbuf->str, offset);
444 g_string_erase(inbuf, 0, offset + 1);
446 words = g_strsplit(cmd->str, " ", 0);
447 qtest_process_command(chr, words);
450 g_string_free(cmd, TRUE);
454 static void qtest_read(void *opaque, const uint8_t *buf, int size)
456 CharDriverState *chr = opaque;
458 g_string_append_len(inbuf, (const gchar *)buf, size);
459 qtest_process_inbuf(chr, inbuf);
462 static int qtest_can_read(void *opaque)
467 static void qtest_event(void *opaque, int event)
472 case CHR_EVENT_OPENED:
474 * We used to call qemu_system_reset() here, hoping we could
475 * use the same process for multiple tests that way. Never
476 * used. Injects an extra reset even when it's not used, and
477 * that can mess up tests, e.g. -boot once.
479 for (i = 0; i < ARRAY_SIZE(irq_levels); i++) {
482 qemu_gettimeofday(&start_time);
485 fprintf(qtest_log_fp, "[I " FMT_timeval "] OPENED\n",
486 (long) start_time.tv_sec, (long) start_time.tv_usec);
489 case CHR_EVENT_CLOSED:
490 qtest_opened = false;
494 fprintf(qtest_log_fp, "[I +" FMT_timeval "] CLOSED\n",
495 (long) tv.tv_sec, (long) tv.tv_usec);
503 int qtest_init_accel(void)
505 configure_icount("0");
510 void qtest_init(const char *qtest_chrdev, const char *qtest_log, Error **errp)
512 CharDriverState *chr;
514 chr = qemu_chr_new("qtest", qtest_chrdev, NULL);
517 error_setg(errp, "Failed to initialize device for qtest: \"%s\"",
522 qemu_chr_add_handlers(chr, qtest_can_read, qtest_read, qtest_event, chr);
523 qemu_chr_fe_set_echo(chr, true);
525 inbuf = g_string_new("");
528 if (strcmp(qtest_log, "none") != 0) {
529 qtest_log_fp = fopen(qtest_log, "w+");
532 qtest_log_fp = stderr;
538 bool qtest_driver(void)