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-rw-r--r--qtest.c354
1 files changed, 354 insertions, 0 deletions
diff --git a/qtest.c b/qtest.c
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+++ b/qtest.c
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+/*
+ * 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 "qtest.h"
+#include "qemu-char.h"
+#include "ioport.h"
+#include "memory.h"
+#include "hw/irq.h"
+#include "sysemu.h"
+
+#define MAX_IRQ 256
+
+const char *qtest_chrdev;
+const char *qtest_log;
+int qtest_allowed = 0;
+
+static FILE *qtest_log_fp;
+static CharDriverState *qtest_chr;
+static GString *inbuf;
+static int irq_levels[MAX_IRQ];
+static struct timeval start_time;
+static bool qtest_opened;
+
+#define FMT_timeval "%" PRId64 ".%06" PRId64
+
+/**
+ * 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
+ *
+ * > outb ADDR VALUE
+ * < OK
+ *
+ * > outw ADDR VALUE
+ * < OK
+ *
+ * > outl ADDR VALUE
+ * < OK
+ *
+ * > inb ADDR
+ * < OK VALUE
+ *
+ * > inw ADDR
+ * < OK VALUE
+ *
+ * > inl ADDR
+ * < OK VALUE
+ *
+ * > read ADDR SIZE
+ * < OK DATA
+ *
+ * > write ADDR SIZE DATA
+ * < OK
+ *
+ * Valid async messages:
+ *
+ * IRQ raise NUM
+ * IRQ lower NUM
+ *
+ * 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.
+ *
+ * NUM is an IRQ number.
+ */
+
+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(struct timeval *tv)
+{
+ gettimeofday(tv, NULL);
+ 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)
+{
+ struct timeval tv;
+
+ if (!qtest_log_fp || !qtest_opened) {
+ return;
+ }
+
+ qtest_get_time(&tv);
+ fprintf(qtest_log_fp, "[S +" FMT_timeval "] ",
+ tv.tv_sec, tv.tv_usec);
+}
+
+static void qtest_send(CharDriverState *chr, const char *fmt, ...)
+{
+ va_list ap;
+ char buffer[1024];
+ size_t len;
+
+ va_start(ap, fmt);
+ len = vsnprintf(buffer, sizeof(buffer), fmt, ap);
+ va_end(ap);
+
+ qemu_chr_fe_write(chr, (uint8_t *)buffer, len);
+ if (qtest_log_fp && qtest_opened) {
+ fprintf(qtest_log_fp, "%s", buffer);
+ }
+}
+
+static void qtest_process_command(CharDriverState *chr, gchar **words)
+{
+ const gchar *command;
+
+ g_assert(words);
+
+ command = words[0];
+
+ if (qtest_log_fp) {
+ struct timeval tv;
+ int i;
+
+ qtest_get_time(&tv);
+ fprintf(qtest_log_fp, "[R +" FMT_timeval "]",
+ tv.tv_sec, 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], "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 = strtol(words[1], NULL, 0);
+ value = strtol(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 = strtol(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_send(chr, "OK 0x%04x\n", value);
+ } else if (strcmp(words[0], "read") == 0) {
+ uint64_t addr, len, i;
+ uint8_t *data;
+
+ g_assert(words[1] && words[2]);
+ addr = strtoul(words[1], NULL, 0);
+ len = strtoul(words[2], NULL, 0);
+
+ data = g_malloc(len);
+ cpu_physical_memory_read(addr, data, len);
+
+ qtest_send_prefix(chr);
+ qtest_send(chr, "OK 0x");
+ for (i = 0; i < len; i++) {
+ qtest_send(chr, "%02x", data[i]);
+ }
+ qtest_send(chr, "\n");
+
+ g_free(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 = strtoul(words[1], NULL, 0);
+ len = strtoul(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 {
+ qtest_send_prefix(chr);
+ qtest_send(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:
+ qemu_system_reset(false);
+ for (i = 0; i < ARRAY_SIZE(irq_levels); i++) {
+ irq_levels[i] = 0;
+ }
+ gettimeofday(&start_time, NULL);
+ qtest_opened = true;
+ if (qtest_log_fp) {
+ fprintf(qtest_log_fp, "[I " FMT_timeval "] OPENED\n",
+ start_time.tv_sec, start_time.tv_usec);
+ }
+ break;
+ case CHR_EVENT_CLOSED:
+ qtest_opened = false;
+ if (qtest_log_fp) {
+ struct timeval tv;
+ qtest_get_time(&tv);
+ fprintf(qtest_log_fp, "[I +" FMT_timeval "] CLOSED\n",
+ tv.tv_sec, tv.tv_usec);
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+static void qtest_set_irq(void *opaque, int irq, int level)
+{
+ CharDriverState *chr = qtest_chr;
+ bool changed;
+
+ changed = (irq_levels[irq] != level);
+ irq_levels[irq] = level;
+
+ if (changed) {
+ qtest_send_prefix(chr);
+ qtest_send(chr, "IRQ %s %d\n",
+ level ? "raise" : "lower", irq);
+ }
+}
+
+int qtest_init(void)
+{
+ CharDriverState *chr;
+
+ g_assert(qtest_chrdev != NULL);
+
+ chr = qemu_chr_new("qtest", qtest_chrdev, NULL);
+
+ qemu_chr_add_handlers(chr, qtest_can_read, qtest_read, qtest_event, chr);
+ qemu_chr_fe_set_echo(chr, true);
+
+ inbuf = g_string_new("");
+
+ if (qtest_log) {
+ if (strcmp(qtest_log, "none") != 0) {
+ qtest_log_fp = fopen(qtest_log, "w+");
+ }
+ } else {
+ qtest_log_fp = stderr;
+ }
+
+ qtest_chr = chr;
+
+ return 0;
+}
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