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qtest.c
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qtest.c
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/*
* Test Server
*
* Copyright IBM, Corp. 2011
*
* Authors:
* Anthony Liguori <[email protected]>
*
* 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 "sysemu/runstate.h"
#include "chardev/char-fe.h"
#include "exec/ioport.h"
#include "exec/memory.h"
#include "exec/tswap.h"
#include "hw/qdev-core.h"
#include "hw/irq.h"
#include "hw/core/cpu.h"
#include "qemu/accel.h"
#include "sysemu/cpu-timers.h"
#include "qemu/config-file.h"
#include "qemu/option.h"
#include "qemu/error-report.h"
#include "qemu/module.h"
#include "qemu/cutils.h"
#include "qom/object_interfaces.h"
#define MAX_IRQ 256
#define TYPE_QTEST "qtest"
OBJECT_DECLARE_SIMPLE_TYPE(QTest, QTEST)
struct QTest {
Object parent;
bool has_machine_link;
char *chr_name;
Chardev *chr;
CharBackend qtest_chr;
char *log;
};
bool qtest_allowed;
static DeviceState *irq_intercept_dev;
static FILE *qtest_log_fp;
static QTest *qtest;
static GString *inbuf;
static int irq_levels[MAX_IRQ];
static GTimer *timer;
static bool qtest_opened;
static void (*qtest_server_send)(void*, const char*);
static void *qtest_server_send_opaque;
#define FMT_timeval "%.06f"
/**
* DOC: 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.
*
* .. code-block:: none
*
* > clock_step
* < OK VALUE
*
* Advance the clock to the next deadline. Useful when waiting for
* asynchronous events.
*
* .. code-block:: none
*
* > clock_step NS
* < OK VALUE
*
* Advance the clock by NS nanoseconds.
*
* .. code-block:: none
*
* > clock_set NS
* < OK VALUE
*
* Advance the clock to NS nanoseconds (do nothing if it's already past).
*
* PIO and memory access:
* """"""""""""""""""""""
*
* .. code-block:: none
*
* > outb ADDR VALUE
* < OK
*
* .. code-block:: none
*
* > outw ADDR VALUE
* < OK
*
* .. code-block:: none
*
* > outl ADDR VALUE
* < OK
*
* .. code-block:: none
*
* > inb ADDR
* < OK VALUE
*
* .. code-block:: none
*
* > inw ADDR
* < OK VALUE
*
* .. code-block:: none
*
* > inl ADDR
* < OK VALUE
*
* .. code-block:: none
*
* > writeb ADDR VALUE
* < OK
*
* .. code-block:: none
*
* > writew ADDR VALUE
* < OK
*
* .. code-block:: none
*
* > writel ADDR VALUE
* < OK
*
* .. code-block:: none
*
* > writeq ADDR VALUE
* < OK
*
* .. code-block:: none
*
* > readb ADDR
* < OK VALUE
*
* .. code-block:: none
*
* > readw ADDR
* < OK VALUE
*
* .. code-block:: none
*
* > readl ADDR
* < OK VALUE
*
* .. code-block:: none
*
* > readq ADDR
* < OK VALUE
*
* .. code-block:: none
*
* > read ADDR SIZE
* < OK DATA
*
* .. code-block:: none
*
* > write ADDR SIZE DATA
* < OK
*
* .. code-block:: none
*
* > b64read ADDR SIZE
* < OK B64_DATA
*
* .. code-block:: none
*
* > b64write ADDR SIZE B64_DATA
* < OK
*
* .. code-block:: none
*
* > memset ADDR SIZE VALUE
* < OK
*
* ADDR, SIZE, VALUE are all integers parsed with strtoul() with a base of 0.
* For 'memset' a zero size is permitted and does nothing.
*
* 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:
* """""""""""""""
*
* .. code-block:: none
*
* > irq_intercept_in QOM-PATH
* < OK
*
* .. code-block:: none
*
* > 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).
*
* Setting interrupt level:
* """"""""""""""""""""""""
*
* .. code-block:: none
*
* > set_irq_in QOM-PATH NAME NUM LEVEL
* < OK
*
* where NAME is the name of the irq/gpio list, NUM is an IRQ number and
* LEVEL is an signed integer IRQ level.
*
* Forcibly set the given interrupt pin to the given level.
*
*/
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;
}
}
void qtest_send_prefix(CharBackend *chr)
{
if (!qtest_log_fp || !qtest_opened) {
return;
}
fprintf(qtest_log_fp, "[S +" FMT_timeval "] ", g_timer_elapsed(timer, NULL));
}
static void G_GNUC_PRINTF(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 qtest_server_char_be_send(void *opaque, const char *str)
{
size_t len = strlen(str);
CharBackend* chr = (CharBackend *)opaque;
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(CharBackend *chr, const char *str)
{
qtest_server_send(qtest_server_send_opaque, str);
}
void qtest_sendf(CharBackend *chr, const char *fmt, ...)
{
va_list ap;
gchar *buffer;
va_start(ap, fmt);
buffer = g_strdup_vprintf(fmt, ap);
qtest_send(chr, buffer);
g_free(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) {
CharBackend *chr = &qtest->qtest_chr;
irq_levels[n] = level;
qtest_send_prefix(chr);
qtest_sendf(chr, "IRQ %s %d\n",
level ? "raise" : "lower", n);
}
}
static int64_t qtest_clock_counter;
int64_t qtest_get_virtual_clock(void)
{
return qatomic_read_i64(&qtest_clock_counter);
}
static void qtest_set_virtual_clock(int64_t count)
{
qatomic_set_i64(&qtest_clock_counter, count);
}
static void qtest_clock_warp(int64_t dest)
{
int64_t clock = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
AioContext *aio_context;
assert(qtest_enabled());
aio_context = qemu_get_aio_context();
while (clock < dest) {
int64_t deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL,
QEMU_TIMER_ATTR_ALL);
int64_t warp = qemu_soonest_timeout(dest - clock, deadline);
qtest_set_virtual_clock(qtest_get_virtual_clock() + warp);
qemu_clock_run_timers(QEMU_CLOCK_VIRTUAL);
timerlist_run_timers(aio_context->tlg.tl[QEMU_CLOCK_VIRTUAL]);
clock = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
}
qemu_clock_notify(QEMU_CLOCK_VIRTUAL);
}
static bool (*process_command_cb)(CharBackend *chr, gchar **words);
void qtest_set_command_cb(bool (*pc_cb)(CharBackend *chr, gchar **words))
{
assert(!process_command_cb); /* Switch to a list if we need more than one */
process_command_cb = pc_cb;
}
static void qtest_install_gpio_out_intercept(DeviceState *dev, const char *name, int n)
{
qemu_irq *disconnected = g_new0(qemu_irq, 1);
qemu_irq icpt = qemu_allocate_irq(qtest_irq_handler,
disconnected, n);
*disconnected = qdev_intercept_gpio_out(dev, icpt, name, n);
}
static void qtest_process_command(CharBackend *chr, gchar **words)
{
const gchar *command;
g_assert(words);
command = words[0];
if (qtest_log_fp) {
int i;
fprintf(qtest_log_fp, "[R +" FMT_timeval "]", g_timer_elapsed(timer, NULL));
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;
bool is_named;
bool is_outbound;
bool interception_succeeded = false;
g_assert(words[1]);
is_named = words[2] != NULL;
is_outbound = words[0][14] == 'o';
dev = DEVICE(object_resolve_path(words[1], NULL));
if (!dev) {
qtest_send_prefix(chr);
qtest_send(chr, "FAIL Unknown device\n");
return;
}
if (is_named && !is_outbound) {
qtest_send_prefix(chr);
qtest_send(chr, "FAIL Interception of named in-GPIOs not yet supported\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 inbound interception of named GPIOs yet */
if (is_outbound) {
/* NULL is valid and matchable, for "unnamed GPIO" */
if (g_strcmp0(ngl->name, words[2]) == 0) {
int i;
for (i = 0; i < ngl->num_out; ++i) {
qtest_install_gpio_out_intercept(dev, ngl->name, i);
}
interception_succeeded = true;
}
} else {
qemu_irq_intercept_in(ngl->in, qtest_irq_handler,
ngl->num_in);
interception_succeeded = true;
}
}
qtest_send_prefix(chr);
if (interception_succeeded) {
irq_intercept_dev = dev;
qtest_send(chr, "OK\n");
} else {
qtest_send(chr, "FAIL No intercepts installed\n");
}
} else if (strcmp(words[0], "set_irq_in") == 0) {
DeviceState *dev;
qemu_irq irq;
char *name;
int ret;
int num;
int level;
g_assert(words[1] && words[2] && words[3] && words[4]);
dev = DEVICE(object_resolve_path(words[1], NULL));
if (!dev) {
qtest_send_prefix(chr);
qtest_send(chr, "FAIL Unknown device\n");
return;
}
if (strcmp(words[2], "unnamed-gpio-in") == 0) {
name = NULL;
} else {
name = words[2];
}
ret = qemu_strtoi(words[3], NULL, 0, &num);
g_assert(!ret);
ret = qemu_strtoi(words[4], NULL, 0, &level);
g_assert(!ret);
irq = qdev_get_gpio_in_named(dev, name, num);
qemu_set_irq(irq, level);
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) {
unsigned long addr;
unsigned long value;
int ret;
g_assert(words[1] && words[2]);
ret = qemu_strtoul(words[1], NULL, 0, &addr);
g_assert(ret == 0);
ret = qemu_strtoul(words[2], NULL, 0, &value);
g_assert(ret == 0);
g_assert(addr <= 0xffff);
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) {
unsigned long addr;
uint32_t value = -1U;
int ret;
g_assert(words[1]);
ret = qemu_strtoul(words[1], NULL, 0, &addr);
g_assert(ret == 0);
g_assert(addr <= 0xffff);
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;
int ret;
g_assert(words[1] && words[2]);
ret = qemu_strtou64(words[1], NULL, 0, &addr);
g_assert(ret == 0);
ret = qemu_strtou64(words[2], NULL, 0, &value);
g_assert(ret == 0);
if (words[0][5] == 'b') {
uint8_t data = value;
address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
&data, 1);
} else if (words[0][5] == 'w') {
uint16_t data = value;
tswap16s(&data);
address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
&data, 2);
} else if (words[0][5] == 'l') {
uint32_t data = value;
tswap32s(&data);
address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
&data, 4);
} else if (words[0][5] == 'q') {
uint64_t data = value;
tswap64s(&data);
address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
&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);
int ret;
g_assert(words[1]);
ret = qemu_strtou64(words[1], NULL, 0, &addr);
g_assert(ret == 0);
if (words[0][4] == 'b') {
uint8_t data;
address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
&data, 1);
value = data;
} else if (words[0][4] == 'w') {
uint16_t data;
address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
&data, 2);
value = tswap16(data);
} else if (words[0][4] == 'l') {
uint32_t data;
address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
&data, 4);
value = tswap32(data);
} else if (words[0][4] == 'q') {
address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
&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;
int ret;
g_assert(words[1] && words[2]);
ret = qemu_strtou64(words[1], NULL, 0, &addr);
g_assert(ret == 0);
ret = qemu_strtou64(words[2], NULL, 0, &len);
g_assert(ret == 0);
/* We'd send garbage to libqtest if len is 0 */
g_assert(len);
data = g_malloc(len);
address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED, 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;
int ret;
g_assert(words[1] && words[2]);
ret = qemu_strtou64(words[1], NULL, 0, &addr);
g_assert(ret == 0);
ret = qemu_strtou64(words[2], NULL, 0, &len);
g_assert(ret == 0);
data = g_malloc(len);
address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED, 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;
int ret;
g_assert(words[1] && words[2] && words[3]);
ret = qemu_strtou64(words[1], NULL, 0, &addr);
g_assert(ret == 0);
ret = qemu_strtou64(words[2], NULL, 0, &len);
g_assert(ret == 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;
}
}
address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED, 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;
unsigned long pattern;
int ret;
g_assert(words[1] && words[2] && words[3]);
ret = qemu_strtou64(words[1], NULL, 0, &addr);
g_assert(ret == 0);
ret = qemu_strtou64(words[2], NULL, 0, &len);
g_assert(ret == 0);
ret = qemu_strtoul(words[3], NULL, 0, &pattern);
g_assert(ret == 0);
if (len) {
data = g_malloc(len);
memset(data, pattern, len);
address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
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;
int ret;
g_assert(words[1] && words[2] && words[3]);
ret = qemu_strtou64(words[1], NULL, 0, &addr);
g_assert(ret == 0);
ret = qemu_strtou64(words[2], NULL, 0, &len);
g_assert(ret == 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);
}
address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED, data,
len);
qtest_send_prefix(chr);
qtest_send(chr, "OK\n");
} else if (strcmp(words[0], "endianness") == 0) {
qtest_send_prefix(chr);
if (target_words_bigendian()) {
qtest_sendf(chr, "OK big\n");
} else {
qtest_sendf(chr, "OK little\n");
}
} else if (qtest_enabled() && strcmp(words[0], "clock_step") == 0) {
int64_t ns;
if (words[1]) {
int ret = qemu_strtoi64(words[1], NULL, 0, &ns);
g_assert(ret == 0);
} else {
ns = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL,
QEMU_TIMER_ATTR_ALL);
}
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 (strcmp(words[0], "module_load") == 0) {
Error *local_err = NULL;
int rv;
g_assert(words[1] && words[2]);
qtest_send_prefix(chr);
rv = module_load(words[1], words[2], &local_err);
if (rv > 0) {
qtest_sendf(chr, "OK\n");
} else {
if (rv < 0) {
error_report_err(local_err);
}
qtest_sendf(chr, "FAIL\n");
}
} else if (qtest_enabled() && strcmp(words[0], "clock_set") == 0) {
int64_t ns;
int ret;
g_assert(words[1]);
ret = qemu_strtoi64(words[1], NULL, 0, &ns);
g_assert(ret == 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 if (process_command_cb && process_command_cb(chr, words)) {
/* Command got consumed by the callback handler */
} else {
qtest_send_prefix(chr);
qtest_sendf(chr, "FAIL Unknown command '%s'\n", words[0]);
}
}
static void qtest_process_inbuf(CharBackend *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)
{
CharBackend *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, QEMUChrEvent 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;
}
g_clear_pointer(&timer, g_timer_destroy);
timer = g_timer_new();
qtest_opened = true;
if (qtest_log_fp) {
fprintf(qtest_log_fp, "[I " FMT_timeval "] OPENED\n", g_timer_elapsed(timer, NULL));
}
break;
case CHR_EVENT_CLOSED:
qtest_opened = false;
if (qtest_log_fp) {
fprintf(qtest_log_fp, "[I +" FMT_timeval "] CLOSED\n", g_timer_elapsed(timer, NULL));
}
g_clear_pointer(&timer, g_timer_destroy);
break;
default:
break;
}
}
void qtest_server_init(const char *qtest_chrdev, const char *qtest_log, Error **errp)
{
ERRP_GUARD();
Chardev *chr;
Object *qobj;
chr = qemu_chr_new("qtest", qtest_chrdev, NULL);
if (chr == NULL) {
error_setg(errp, "Failed to initialize device for qtest: \"%s\"",
qtest_chrdev);
return;
}
qobj = object_new(TYPE_QTEST);
object_property_set_str(qobj, "chardev", chr->label, &error_abort);
if (qtest_log) {
object_property_set_str(qobj, "log", qtest_log, &error_abort);
}
object_property_add_child(qdev_get_machine(), "qtest", qobj);
user_creatable_complete(USER_CREATABLE(qobj), errp);
if (*errp) {
object_unparent(qobj);
}
object_unref(OBJECT(chr));
object_unref(qobj);
}
static bool qtest_server_start(QTest *q, Error **errp)
{
Chardev *chr = q->chr;
const char *qtest_log = q->log;
if (qtest_log) {
if (strcmp(qtest_log, "none") != 0) {
qtest_log_fp = fopen(qtest_log, "w+");
}
} else {
qtest_log_fp = stderr;
}
if (!qemu_chr_fe_init(&q->qtest_chr, chr, errp)) {
return false;
}
qemu_chr_fe_set_handlers(&q->qtest_chr, qtest_can_read, qtest_read,
qtest_event, NULL, &q->qtest_chr, NULL, true);
qemu_chr_fe_set_echo(&q->qtest_chr, true);
inbuf = g_string_new("");
if (!qtest_server_send) {
qtest_server_set_send_handler(qtest_server_char_be_send, &q->qtest_chr);
}
qtest = q;
return true;
}
void qtest_server_set_send_handler(void (*send)(void*, const char*),
void *opaque)
{
qtest_server_send = send;
qtest_server_send_opaque = opaque;
}
bool qtest_driver(void)
{
return qtest && qtest->qtest_chr.chr != NULL;
}
void qtest_server_inproc_recv(void *dummy, const char *buf)
{
static GString *gstr;
if (!gstr) {
gstr = g_string_new(NULL);
}
g_string_append(gstr, buf);
if (gstr->str[gstr->len - 1] == '\n') {
qtest_process_inbuf(NULL, gstr);
g_string_truncate(gstr, 0);
}
}
static void qtest_complete(UserCreatable *uc, Error **errp)
{
QTest *q = QTEST(uc);
if (qtest) {
error_setg(errp, "Only one instance of qtest can be created");
return;
}
if (!q->chr_name) {
error_setg(errp, "No backend specified");
return;
}
if (OBJECT(uc)->parent != qdev_get_machine()) {
q->has_machine_link = true;
object_property_add_const_link(qdev_get_machine(), "qtest", OBJECT(uc));
} else {
/* -qtest was used. */
}
qtest_server_start(q, errp);
}
static void qtest_unparent(Object *obj)
{
QTest *q = QTEST(obj);
if (qtest == q) {
qemu_chr_fe_disconnect(&q->qtest_chr);
assert(!qtest_opened);
qemu_chr_fe_deinit(&q->qtest_chr, false);
if (qtest_log_fp) {
fclose(qtest_log_fp);
qtest_log_fp = NULL;
}
qtest = NULL;
}
if (q->has_machine_link) {
object_property_del(qdev_get_machine(), "qtest");
q->has_machine_link = false;
}
}
static void qtest_set_log(Object *obj, const char *value, Error **errp)
{
QTest *q = QTEST(obj);
if (qtest == q) {
error_setg(errp, "Property 'log' can not be set now");
} else {
g_free(q->log);
q->log = g_strdup(value);
}
}