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Diffstat (limited to 'qemu/qtest.c')
| -rw-r--r-- | qemu/qtest.c | 691 |
1 files changed, 0 insertions, 691 deletions
diff --git a/qemu/qtest.c b/qemu/qtest.c deleted file mode 100644 index 87575bc0b..000000000 --- a/qemu/qtest.c +++ /dev/null @@ -1,691 +0,0 @@ -/* - * Test Server - * - * Copyright IBM, Corp. 2011 - * - * Authors: - * Anthony Liguori <aliguori@us.ibm.com> - * - * This work is licensed under the terms of the GNU GPL, version 2 or later. - * See the COPYING file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "qapi/error.h" -#include "sysemu/qtest.h" -#include "hw/qdev.h" -#include "sysemu/char.h" -#include "exec/ioport.h" -#include "exec/memory.h" -#include "hw/irq.h" -#include "sysemu/accel.h" -#include "sysemu/sysemu.h" -#include "sysemu/cpus.h" -#include "qemu/config-file.h" -#include "qemu/option.h" -#include "qemu/error-report.h" - -#define MAX_IRQ 256 - -bool qtest_allowed; - -static DeviceState *irq_intercept_dev; -static FILE *qtest_log_fp; -static CharDriverState *qtest_chr; -static GString *inbuf; -static int irq_levels[MAX_IRQ]; -static qemu_timeval start_time; -static bool qtest_opened; - -#define FMT_timeval "%ld.%06ld" - -/** - * QTest Protocol - * - * Line based protocol, request/response based. Server can send async messages - * so clients should always handle many async messages before the response - * comes in. - * - * Valid requests - * - * Clock management: - * - * The qtest client is completely in charge of the QEMU_CLOCK_VIRTUAL. qtest commands - * let you adjust the value of the clock (monotonically). All the commands - * return the current value of the clock in nanoseconds. - * - * > clock_step - * < OK VALUE - * - * Advance the clock to the next deadline. Useful when waiting for - * asynchronous events. - * - * > clock_step NS - * < OK VALUE - * - * Advance the clock by NS nanoseconds. - * - * > clock_set NS - * < OK VALUE - * - * Advance the clock to NS nanoseconds (do nothing if it's already past). - * - * PIO and memory access: - * - * > outb ADDR VALUE - * < OK - * - * > outw ADDR VALUE - * < OK - * - * > outl ADDR VALUE - * < OK - * - * > inb ADDR - * < OK VALUE - * - * > inw ADDR - * < OK VALUE - * - * > inl ADDR - * < OK VALUE - * - * > writeb ADDR VALUE - * < OK - * - * > writew ADDR VALUE - * < OK - * - * > writel ADDR VALUE - * < OK - * - * > writeq ADDR VALUE - * < OK - * - * > readb ADDR - * < OK VALUE - * - * > readw ADDR - * < OK VALUE - * - * > readl ADDR - * < OK VALUE - * - * > readq ADDR - * < OK VALUE - * - * > read ADDR SIZE - * < OK DATA - * - * > write ADDR SIZE DATA - * < OK - * - * > b64read ADDR SIZE - * < OK B64_DATA - * - * > b64write ADDR SIZE B64_DATA - * < OK - * - * > memset ADDR SIZE VALUE - * < OK - * - * ADDR, SIZE, VALUE are all integers parsed with strtoul() with a base of 0. - * - * DATA is an arbitrarily long hex number prefixed with '0x'. If it's smaller - * than the expected size, the value will be zero filled at the end of the data - * sequence. - * - * B64_DATA is an arbitrarily long base64 encoded string. - * If the sizes do not match, the data will be truncated. - * - * IRQ management: - * - * > irq_intercept_in QOM-PATH - * < OK - * - * > irq_intercept_out QOM-PATH - * < OK - * - * Attach to the gpio-in (resp. gpio-out) pins exported by the device at - * QOM-PATH. When the pin is triggered, one of the following async messages - * will be printed to the qtest stream: - * - * IRQ raise NUM - * IRQ lower NUM - * - * where NUM is an IRQ number. For the PC, interrupts can be intercepted - * simply with "irq_intercept_in ioapic" (note that IRQ0 comes out with - * NUM=0 even though it is remapped to GSI 2). - */ - -static int hex2nib(char ch) -{ - if (ch >= '0' && ch <= '9') { - return ch - '0'; - } else if (ch >= 'a' && ch <= 'f') { - return 10 + (ch - 'a'); - } else if (ch >= 'A' && ch <= 'F') { - return 10 + (ch - 'A'); - } else { - return -1; - } -} - -static void qtest_get_time(qemu_timeval *tv) -{ - qemu_gettimeofday(tv); - tv->tv_sec -= start_time.tv_sec; - tv->tv_usec -= start_time.tv_usec; - if (tv->tv_usec < 0) { - tv->tv_usec += 1000000; - tv->tv_sec -= 1; - } -} - -static void qtest_send_prefix(CharDriverState *chr) -{ - qemu_timeval tv; - - if (!qtest_log_fp || !qtest_opened) { - return; - } - - qtest_get_time(&tv); - fprintf(qtest_log_fp, "[S +" FMT_timeval "] ", - (long) tv.tv_sec, (long) tv.tv_usec); -} - -static void GCC_FMT_ATTR(1, 2) qtest_log_send(const char *fmt, ...) -{ - va_list ap; - - if (!qtest_log_fp || !qtest_opened) { - return; - } - - qtest_send_prefix(NULL); - - va_start(ap, fmt); - vfprintf(qtest_log_fp, fmt, ap); - va_end(ap); -} - -static void do_qtest_send(CharDriverState *chr, const char *str, size_t len) -{ - qemu_chr_fe_write_all(chr, (uint8_t *)str, len); - if (qtest_log_fp && qtest_opened) { - fprintf(qtest_log_fp, "%s", str); - } -} - -static void qtest_send(CharDriverState *chr, const char *str) -{ - do_qtest_send(chr, str, strlen(str)); -} - -static void GCC_FMT_ATTR(2, 3) qtest_sendf(CharDriverState *chr, - const char *fmt, ...) -{ - va_list ap; - gchar *buffer; - - va_start(ap, fmt); - buffer = g_strdup_vprintf(fmt, ap); - qtest_send(chr, buffer); - va_end(ap); -} - -static void qtest_irq_handler(void *opaque, int n, int level) -{ - qemu_irq old_irq = *(qemu_irq *)opaque; - qemu_set_irq(old_irq, level); - - if (irq_levels[n] != level) { - CharDriverState *chr = qtest_chr; - irq_levels[n] = level; - qtest_send_prefix(chr); - qtest_sendf(chr, "IRQ %s %d\n", - level ? "raise" : "lower", n); - } -} - -static void qtest_process_command(CharDriverState *chr, gchar **words) -{ - const gchar *command; - - g_assert(words); - - command = words[0]; - - if (qtest_log_fp) { - qemu_timeval tv; - int i; - - qtest_get_time(&tv); - fprintf(qtest_log_fp, "[R +" FMT_timeval "]", - (long) tv.tv_sec, (long) tv.tv_usec); - for (i = 0; words[i]; i++) { - fprintf(qtest_log_fp, " %s", words[i]); - } - fprintf(qtest_log_fp, "\n"); - } - - g_assert(command); - if (strcmp(words[0], "irq_intercept_out") == 0 - || strcmp(words[0], "irq_intercept_in") == 0) { - DeviceState *dev; - NamedGPIOList *ngl; - - g_assert(words[1]); - dev = DEVICE(object_resolve_path(words[1], NULL)); - if (!dev) { - qtest_send_prefix(chr); - qtest_send(chr, "FAIL Unknown device\n"); - return; - } - - if (irq_intercept_dev) { - qtest_send_prefix(chr); - if (irq_intercept_dev != dev) { - qtest_send(chr, "FAIL IRQ intercept already enabled\n"); - } else { - qtest_send(chr, "OK\n"); - } - return; - } - - QLIST_FOREACH(ngl, &dev->gpios, node) { - /* We don't support intercept of named GPIOs yet */ - if (ngl->name) { - continue; - } - if (words[0][14] == 'o') { - int i; - for (i = 0; i < ngl->num_out; ++i) { - qemu_irq *disconnected = g_new0(qemu_irq, 1); - qemu_irq icpt = qemu_allocate_irq(qtest_irq_handler, - disconnected, i); - - *disconnected = qdev_intercept_gpio_out(dev, icpt, - ngl->name, i); - } - } else { - qemu_irq_intercept_in(ngl->in, qtest_irq_handler, - ngl->num_in); - } - } - irq_intercept_dev = dev; - qtest_send_prefix(chr); - qtest_send(chr, "OK\n"); - - } else if (strcmp(words[0], "outb") == 0 || - strcmp(words[0], "outw") == 0 || - strcmp(words[0], "outl") == 0) { - uint16_t addr; - uint32_t value; - - g_assert(words[1] && words[2]); - addr = strtoul(words[1], NULL, 0); - value = strtoul(words[2], NULL, 0); - - if (words[0][3] == 'b') { - cpu_outb(addr, value); - } else if (words[0][3] == 'w') { - cpu_outw(addr, value); - } else if (words[0][3] == 'l') { - cpu_outl(addr, value); - } - qtest_send_prefix(chr); - qtest_send(chr, "OK\n"); - } else if (strcmp(words[0], "inb") == 0 || - strcmp(words[0], "inw") == 0 || - strcmp(words[0], "inl") == 0) { - uint16_t addr; - uint32_t value = -1U; - - g_assert(words[1]); - addr = strtoul(words[1], NULL, 0); - - if (words[0][2] == 'b') { - value = cpu_inb(addr); - } else if (words[0][2] == 'w') { - value = cpu_inw(addr); - } else if (words[0][2] == 'l') { - value = cpu_inl(addr); - } - qtest_send_prefix(chr); - qtest_sendf(chr, "OK 0x%04x\n", value); - } else if (strcmp(words[0], "writeb") == 0 || - strcmp(words[0], "writew") == 0 || - strcmp(words[0], "writel") == 0 || - strcmp(words[0], "writeq") == 0) { - uint64_t addr; - uint64_t value; - - g_assert(words[1] && words[2]); - addr = strtoull(words[1], NULL, 0); - value = strtoull(words[2], NULL, 0); - - if (words[0][5] == 'b') { - uint8_t data = value; - cpu_physical_memory_write(addr, &data, 1); - } else if (words[0][5] == 'w') { - uint16_t data = value; - tswap16s(&data); - cpu_physical_memory_write(addr, &data, 2); - } else if (words[0][5] == 'l') { - uint32_t data = value; - tswap32s(&data); - cpu_physical_memory_write(addr, &data, 4); - } else if (words[0][5] == 'q') { - uint64_t data = value; - tswap64s(&data); - cpu_physical_memory_write(addr, &data, 8); - } - qtest_send_prefix(chr); - qtest_send(chr, "OK\n"); - } else if (strcmp(words[0], "readb") == 0 || - strcmp(words[0], "readw") == 0 || - strcmp(words[0], "readl") == 0 || - strcmp(words[0], "readq") == 0) { - uint64_t addr; - uint64_t value = UINT64_C(-1); - - g_assert(words[1]); - addr = strtoull(words[1], NULL, 0); - - if (words[0][4] == 'b') { - uint8_t data; - cpu_physical_memory_read(addr, &data, 1); - value = data; - } else if (words[0][4] == 'w') { - uint16_t data; - cpu_physical_memory_read(addr, &data, 2); - value = tswap16(data); - } else if (words[0][4] == 'l') { - uint32_t data; - cpu_physical_memory_read(addr, &data, 4); - value = tswap32(data); - } else if (words[0][4] == 'q') { - cpu_physical_memory_read(addr, &value, 8); - tswap64s(&value); - } - qtest_send_prefix(chr); - qtest_sendf(chr, "OK 0x%016" PRIx64 "\n", value); - } else if (strcmp(words[0], "read") == 0) { - uint64_t addr, len, i; - uint8_t *data; - char *enc; - - g_assert(words[1] && words[2]); - addr = strtoull(words[1], NULL, 0); - len = strtoull(words[2], NULL, 0); - - data = g_malloc(len); - cpu_physical_memory_read(addr, data, len); - - enc = g_malloc(2 * len + 1); - for (i = 0; i < len; i++) { - sprintf(&enc[i * 2], "%02x", data[i]); - } - - qtest_send_prefix(chr); - qtest_sendf(chr, "OK 0x%s\n", enc); - - g_free(data); - g_free(enc); - } else if (strcmp(words[0], "b64read") == 0) { - uint64_t addr, len; - uint8_t *data; - gchar *b64_data; - - g_assert(words[1] && words[2]); - addr = strtoull(words[1], NULL, 0); - len = strtoull(words[2], NULL, 0); - - data = g_malloc(len); - cpu_physical_memory_read(addr, data, len); - b64_data = g_base64_encode(data, len); - qtest_send_prefix(chr); - qtest_sendf(chr, "OK %s\n", b64_data); - - g_free(data); - g_free(b64_data); - } else if (strcmp(words[0], "write") == 0) { - uint64_t addr, len, i; - uint8_t *data; - size_t data_len; - - g_assert(words[1] && words[2] && words[3]); - addr = strtoull(words[1], NULL, 0); - len = strtoull(words[2], NULL, 0); - - data_len = strlen(words[3]); - if (data_len < 3) { - qtest_send(chr, "ERR invalid argument size\n"); - return; - } - - data = g_malloc(len); - for (i = 0; i < len; i++) { - if ((i * 2 + 4) <= data_len) { - data[i] = hex2nib(words[3][i * 2 + 2]) << 4; - data[i] |= hex2nib(words[3][i * 2 + 3]); - } else { - data[i] = 0; - } - } - cpu_physical_memory_write(addr, data, len); - g_free(data); - - qtest_send_prefix(chr); - qtest_send(chr, "OK\n"); - } else if (strcmp(words[0], "memset") == 0) { - uint64_t addr, len; - uint8_t *data; - uint8_t pattern; - - g_assert(words[1] && words[2] && words[3]); - addr = strtoull(words[1], NULL, 0); - len = strtoull(words[2], NULL, 0); - pattern = strtoull(words[3], NULL, 0); - - data = g_malloc(len); - memset(data, pattern, len); - cpu_physical_memory_write(addr, data, len); - g_free(data); - - qtest_send_prefix(chr); - qtest_send(chr, "OK\n"); - } else if (strcmp(words[0], "b64write") == 0) { - uint64_t addr, len; - uint8_t *data; - size_t data_len; - gsize out_len; - - g_assert(words[1] && words[2] && words[3]); - addr = strtoull(words[1], NULL, 0); - len = strtoull(words[2], NULL, 0); - - data_len = strlen(words[3]); - if (data_len < 3) { - qtest_send(chr, "ERR invalid argument size\n"); - return; - } - - data = g_base64_decode_inplace(words[3], &out_len); - if (out_len != len) { - qtest_log_send("b64write: data length mismatch (told %"PRIu64", " - "found %zu)\n", - len, out_len); - out_len = MIN(out_len, len); - } - - cpu_physical_memory_write(addr, data, out_len); - - qtest_send_prefix(chr); - qtest_send(chr, "OK\n"); - } else if (qtest_enabled() && strcmp(words[0], "clock_step") == 0) { - int64_t ns; - - if (words[1]) { - ns = strtoll(words[1], NULL, 0); - } else { - ns = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); - } - qtest_clock_warp(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + ns); - qtest_send_prefix(chr); - qtest_sendf(chr, "OK %"PRIi64"\n", - (int64_t)qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); - } else if (qtest_enabled() && strcmp(words[0], "clock_set") == 0) { - int64_t ns; - - g_assert(words[1]); - ns = strtoll(words[1], NULL, 0); - qtest_clock_warp(ns); - qtest_send_prefix(chr); - qtest_sendf(chr, "OK %"PRIi64"\n", - (int64_t)qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); - } else { - qtest_send_prefix(chr); - qtest_sendf(chr, "FAIL Unknown command '%s'\n", words[0]); - } -} - -static void qtest_process_inbuf(CharDriverState *chr, GString *inbuf) -{ - char *end; - - while ((end = strchr(inbuf->str, '\n')) != NULL) { - size_t offset; - GString *cmd; - gchar **words; - - offset = end - inbuf->str; - - cmd = g_string_new_len(inbuf->str, offset); - g_string_erase(inbuf, 0, offset + 1); - - words = g_strsplit(cmd->str, " ", 0); - qtest_process_command(chr, words); - g_strfreev(words); - - g_string_free(cmd, TRUE); - } -} - -static void qtest_read(void *opaque, const uint8_t *buf, int size) -{ - CharDriverState *chr = opaque; - - g_string_append_len(inbuf, (const gchar *)buf, size); - qtest_process_inbuf(chr, inbuf); -} - -static int qtest_can_read(void *opaque) -{ - return 1024; -} - -static void qtest_event(void *opaque, int event) -{ - int i; - - switch (event) { - case CHR_EVENT_OPENED: - /* - * We used to call qemu_system_reset() here, hoping we could - * use the same process for multiple tests that way. Never - * used. Injects an extra reset even when it's not used, and - * that can mess up tests, e.g. -boot once. - */ - for (i = 0; i < ARRAY_SIZE(irq_levels); i++) { - irq_levels[i] = 0; - } - qemu_gettimeofday(&start_time); - qtest_opened = true; - if (qtest_log_fp) { - fprintf(qtest_log_fp, "[I " FMT_timeval "] OPENED\n", - (long) start_time.tv_sec, (long) start_time.tv_usec); - } - break; - case CHR_EVENT_CLOSED: - qtest_opened = false; - if (qtest_log_fp) { - qemu_timeval tv; - qtest_get_time(&tv); - fprintf(qtest_log_fp, "[I +" FMT_timeval "] CLOSED\n", - (long) tv.tv_sec, (long) tv.tv_usec); - } - break; - default: - break; - } -} - -static int qtest_init_accel(MachineState *ms) -{ - QemuOpts *opts = qemu_opts_create(qemu_find_opts("icount"), NULL, 0, - &error_abort); - qemu_opt_set(opts, "shift", "0", &error_abort); - configure_icount(opts, &error_abort); - qemu_opts_del(opts); - return 0; -} - -void qtest_init(const char *qtest_chrdev, const char *qtest_log, Error **errp) -{ - CharDriverState *chr; - - chr = qemu_chr_new("qtest", qtest_chrdev, NULL); - - if (chr == NULL) { - error_setg(errp, "Failed to initialize device for qtest: \"%s\"", - qtest_chrdev); - return; - } - - if (qtest_log) { - if (strcmp(qtest_log, "none") != 0) { - qtest_log_fp = fopen(qtest_log, "w+"); - } - } else { - qtest_log_fp = stderr; - } - - qemu_chr_add_handlers(chr, qtest_can_read, qtest_read, qtest_event, chr); - qemu_chr_fe_set_echo(chr, true); - - inbuf = g_string_new(""); - qtest_chr = chr; -} - -bool qtest_driver(void) -{ - return qtest_chr; -} - -static void qtest_accel_class_init(ObjectClass *oc, void *data) -{ - AccelClass *ac = ACCEL_CLASS(oc); - ac->name = "QTest"; - ac->available = qtest_available; - ac->init_machine = qtest_init_accel; - ac->allowed = &qtest_allowed; -} - -#define TYPE_QTEST_ACCEL ACCEL_CLASS_NAME("qtest") - -static const TypeInfo qtest_accel_type = { - .name = TYPE_QTEST_ACCEL, - .parent = TYPE_ACCEL, - .class_init = qtest_accel_class_init, -}; - -static void qtest_type_init(void) -{ - type_register_static(&qtest_accel_type); -} - -type_init(qtest_type_init); |