static void filter_redirector_setup(NetFilterState *nf, Error **errp)
{
MirrorState *s = FILTER_REDIRECTOR(nf);
Chardev *chr;
if (!s->indev && !s->outdev) {
error_setg(errp, "filter redirector needs 'indev' or "
"'outdev' at least one property set");
return;
} else if (s->indev && s->outdev) {
if (!strcmp(s->indev, s->outdev)) {
error_setg(errp, "'indev' and 'outdev' could not be same "
"for filter redirector");
return;
}
}
net_socket_rs_init(&s->rs, redirector_rs_finalize);
if (s->indev) {
chr = qemu_chr_find(s->indev);
if (chr == NULL) {
error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
"IN Device '%s' not found", s->indev);
return;
}
if (!qemu_chr_fe_init(&s->chr_in, chr, errp)) {
return;
}
qemu_chr_fe_set_handlers(&s->chr_in, redirector_chr_can_read,
redirector_chr_read, redirector_chr_event,
nf, NULL, true);
}
if (s->outdev) {
chr = qemu_chr_find(s->outdev);
if (chr == NULL) {
error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
"OUT Device '%s' not found", s->outdev);
return;
}
if (!qemu_chr_fe_init(&s->chr_out, chr, errp)) {
return;
}
}
}
static CharDriverState *net_vhost_parse_chardev(const NetdevVhostUserOptions *opts)
{
CharDriverState *chr = qemu_chr_find(opts->chardev);
VhostUserChardevProps props;
if (chr == NULL) {
error_report("chardev \"%s\" not found", opts->chardev);
return NULL;
}
/* inspect chardev opts */
memset(&props, 0, sizeof(props));
if (qemu_opt_foreach(chr->opts, net_vhost_chardev_opts, &props, true) != 0) {
return NULL;
}
if (!props.is_socket || !props.is_unix) {
error_report("chardev \"%s\" is not a unix socket",
opts->chardev);
return NULL;
}
qemu_chr_fe_claim_no_fail(chr);
return chr;
}
static void rng_egd_opened(RngBackend *b, Error **errp)
{
RngEgd *s = RNG_EGD(b);
if (s->chr_name == NULL) {
error_set(errp, QERR_INVALID_PARAMETER_VALUE,
"chardev", "a valid character device");
return;
}
s->chr = qemu_chr_find(s->chr_name);
if (s->chr == NULL) {
error_set(errp, QERR_DEVICE_NOT_FOUND, s->chr_name);
return;
}
if (qemu_chr_fe_claim(s->chr) != 0) {
error_set(errp, QERR_DEVICE_IN_USE, s->chr_name);
return;
}
/* FIXME we should resubmit pending requests when the CDS reconnects. */
qemu_chr_add_handlers(s->chr, rng_egd_chr_can_read, rng_egd_chr_read,
NULL, s);
}
static int parse_chr(DeviceState *dev, const char *str, void **ptr)
{
CharDriverState *chr = qemu_chr_find(str);
if (chr == NULL) {
return -ENOENT;
}
if (qemu_chr_fe_claim(chr) != 0) {
return -EEXIST;
}
*ptr = chr;
return 0;
}
static int parse_chr(DeviceState *dev, const char *str, void **ptr)
{
CharDriverState *chr = qemu_chr_find(str);
if (chr == NULL) {
return -ENOENT;
}
if (chr->avail_connections < 1) {
return -EEXIST;
}
*ptr = chr;
--chr->avail_connections;
return 0;
}
static void filter_mirror_setup(NetFilterState *nf, Error **errp)
{
MirrorState *s = FILTER_MIRROR(nf);
Chardev *chr;
chr = qemu_chr_find(s->outdev);
if (chr == NULL) {
error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
"Device '%s' not found", s->outdev);
return;
}
qemu_chr_fe_init(&s->chr_out, chr, errp);
}
static int parse_chr(DeviceState *dev, Property *prop, const char *str)
{
CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);
*ptr = qemu_chr_find(str);
if (*ptr == NULL) {
return -ENOENT;
}
if ((*ptr)->avail_connections < 1) {
return -EEXIST;
}
--(*ptr)->avail_connections;
return 0;
}
static void parse_chr(DeviceState *dev, const char *str, void **ptr,
const char *propname, Error **errp)
{
CharDriverState *chr = qemu_chr_find(str);
if (chr == NULL) {
error_setg(errp, "Property '%s.%s' can't find value '%s'",
object_get_typename(OBJECT(dev)), propname, str);
return;
}
if (qemu_chr_fe_claim(chr) != 0) {
error_setg(errp, "Property '%s.%s' can't take value '%s', it's in use",
object_get_typename(OBJECT(dev)), propname, str);
return;
}
*ptr = chr;
}
static int stm32_button_init(SysBusDevice *dev, const char* id) {
stm32_button_state *s = FROM_SYSBUS(stm32_button_state, dev);
//Initialisation de la pin de sortie
//Initialisation of the output pin
qdev_init_gpio_out(&dev->qdev, &s->gpio_out, 1);
//Initialisation du Chardev
s->chr = qdev_init_chardev(&dev->qdev);
s->chr = qemu_chr_find(id);
if (s->chr) {
qemu_chr_add_handlers(s->chr, stm32_can_receive, stm32_receive, stm32_event, s);
}
stm32_button_reset(s);
vmstate_register(&dev->qdev, -1, &vmstate_stm32_button, s);
return 0;
}
/*
* Return 0 is success.
* Return 1 is failed.
*/
static int find_and_check_chardev(Chardev **chr,
char *chr_name,
Error **errp)
{
*chr = qemu_chr_find(chr_name);
if (*chr == NULL) {
error_setg(errp, "Device '%s' not found",
chr_name);
return 1;
}
if (!qemu_chr_has_feature(*chr, QEMU_CHAR_FEATURE_RECONNECTABLE)) {
error_setg(errp, "chardev \"%s\" is not reconnectable",
chr_name);
return 1;
}
return 0;
}
static int stm32_led_init(SysBusDevice *dev, const char* id) {
stm32_led_state *s = FROM_SYSBUS(stm32_led_state, dev);
//Initialisation des pins d'entrées
qdev_init_gpio_in(&dev->qdev, stm32_led_recvirq, 1);
//Initialiser le chardev
s->chr = qdev_init_chardev(&dev->qdev);
s->chr = qemu_chr_find(id);
if (s->chr) {
qemu_chr_add_handlers(s->chr, stm32_can_receive, stm32_receive, stm32_event, s);
}
stm32_led_reset(s);
vmstate_register(&dev->qdev, -1, &vmstate_stm32_led, s);
return 0;
}
static void qemu_chr_open_mux(Chardev *chr,
ChardevBackend *backend,
bool *be_opened,
Error **errp)
{
ChardevMux *mux = backend->u.mux.data;
Chardev *drv;
MuxChardev *d = MUX_CHARDEV(chr);
drv = qemu_chr_find(mux->chardev);
if (drv == NULL) {
error_setg(errp, "mux: base chardev %s not found", mux->chardev);
return;
}
d->focus = -1;
/* only default to opened state if we've realized the initial
* set of muxes
*/
*be_opened = machine_init_done;
qemu_chr_fe_init(&d->chr, drv, errp);
}
static Chardev *net_vhost_claim_chardev(
const NetdevVhostUserOptions *opts, Error **errp)
{
Chardev *chr = qemu_chr_find(opts->chardev);
if (chr == NULL) {
error_setg(errp, "chardev \"%s\" not found", opts->chardev);
return NULL;
}
if (!qemu_chr_has_feature(chr, QEMU_CHAR_FEATURE_RECONNECTABLE)) {
error_setg(errp, "chardev \"%s\" is not reconnectable",
opts->chardev);
return NULL;
}
if (!qemu_chr_has_feature(chr, QEMU_CHAR_FEATURE_FD_PASS)) {
error_setg(errp, "chardev \"%s\" does not support FD passing",
opts->chardev);
return NULL;
}
return chr;
}
static void set_chr(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Error *local_err = NULL;
Property *prop = opaque;
CharBackend *be = qdev_get_prop_ptr(dev, prop);
CharDriverState *s;
char *str;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_str(v, name, &str, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
if (!*str) {
g_free(str);
be->chr = NULL;
return;
}
s = qemu_chr_find(str);
if (s == NULL) {
error_setg(errp, "Property '%s.%s' can't find value '%s'",
object_get_typename(obj), prop->name, str);
} else if (!qemu_chr_fe_init(be, s, errp)) {
error_prepend(errp, "Property '%s.%s' can't take value '%s': ",
object_get_typename(obj), prop->name, str);
}
g_free(str);
}
static int tpm_emulator_handle_device_opts(TPMEmulator *tpm_emu, QemuOpts *opts)
{
const char *value;
value = qemu_opt_get(opts, "chardev");
if (value) {
Error *err = NULL;
Chardev *dev = qemu_chr_find(value);
if (!dev) {
error_report("tpm-emulator: tpm chardev '%s' not found.", value);
goto err;
}
if (!qemu_chr_fe_init(&tpm_emu->ctrl_chr, dev, &err)) {
error_prepend(&err, "tpm-emulator: No valid chardev found at '%s':",
value);
error_report_err(err);
goto err;
}
tpm_emu->options->chardev = g_strdup(value);
}
if (tpm_emulator_prepare_data_fd(tpm_emu) < 0) {
goto err;
}
/* FIXME: tpm_util_test_tpmdev() accepts only on socket fd, as it also used
* by passthrough driver, which not yet using GIOChannel.
*/
if (tpm_util_test_tpmdev(QIO_CHANNEL_SOCKET(tpm_emu->data_ioc)->fd,
&tpm_emu->tpm_version)) {
error_report("'%s' is not emulating TPM device. Error: %s",
tpm_emu->options->chardev, strerror(errno));
goto err;
}
switch (tpm_emu->tpm_version) {
case TPM_VERSION_1_2:
trace_tpm_emulator_handle_device_opts_tpm12();
break;
case TPM_VERSION_2_0:
trace_tpm_emulator_handle_device_opts_tpm2();
break;
default:
trace_tpm_emulator_handle_device_opts_unspec();
}
if (tpm_emulator_probe_caps(tpm_emu) ||
tpm_emulator_check_caps(tpm_emu)) {
goto err;
}
return tpm_emulator_block_migration(tpm_emu);
err:
trace_tpm_emulator_handle_device_opts_startup_error();
return -1;
}
static void char_mux_test(void)
{
QemuOpts *opts;
Chardev *chr, *base;
char *data;
FeHandler h1 = { 0, false, 0, false, }, h2 = { 0, false, 0, false, };
CharBackend chr_be1, chr_be2;
opts = qemu_opts_create(qemu_find_opts("chardev"), "mux-label",
1, &error_abort);
qemu_opt_set(opts, "backend", "ringbuf", &error_abort);
qemu_opt_set(opts, "size", "128", &error_abort);
qemu_opt_set(opts, "mux", "on", &error_abort);
chr = qemu_chr_new_from_opts(opts, NULL, &error_abort);
g_assert_nonnull(chr);
qemu_opts_del(opts);
qemu_chr_fe_init(&chr_be1, chr, &error_abort);
qemu_chr_fe_set_handlers(&chr_be1,
fe_can_read,
fe_read,
fe_event,
NULL,
&h1,
NULL, true);
qemu_chr_fe_init(&chr_be2, chr, &error_abort);
qemu_chr_fe_set_handlers(&chr_be2,
fe_can_read,
fe_read,
fe_event,
NULL,
&h2,
NULL, true);
qemu_chr_fe_take_focus(&chr_be2);
base = qemu_chr_find("mux-label-base");
g_assert_cmpint(qemu_chr_be_can_write(base), !=, 0);
qemu_chr_be_write(base, (void *)"hello", 6);
g_assert_cmpint(h1.read_count, ==, 0);
g_assert_cmpint(h2.read_count, ==, 6);
g_assert_cmpstr(h2.read_buf, ==, "hello");
h2.read_count = 0;
g_assert_cmpint(h1.last_event, !=, 42); /* should be MUX_OUT or OPENED */
g_assert_cmpint(h2.last_event, !=, 42); /* should be MUX_IN or OPENED */
/* sending event on the base broadcast to all fe, historical reasons? */
qemu_chr_be_event(base, 42);
g_assert_cmpint(h1.last_event, ==, 42);
g_assert_cmpint(h2.last_event, ==, 42);
qemu_chr_be_event(chr, -1);
g_assert_cmpint(h1.last_event, ==, 42);
g_assert_cmpint(h2.last_event, ==, -1);
/* switch focus */
qemu_chr_be_write(base, (void *)"\1b", 2);
g_assert_cmpint(h1.last_event, ==, 42);
g_assert_cmpint(h2.last_event, ==, CHR_EVENT_BREAK);
qemu_chr_be_write(base, (void *)"\1c", 2);
g_assert_cmpint(h1.last_event, ==, CHR_EVENT_MUX_IN);
g_assert_cmpint(h2.last_event, ==, CHR_EVENT_MUX_OUT);
qemu_chr_be_event(chr, -1);
g_assert_cmpint(h1.last_event, ==, -1);
g_assert_cmpint(h2.last_event, ==, CHR_EVENT_MUX_OUT);
qemu_chr_be_write(base, (void *)"hello", 6);
g_assert_cmpint(h2.read_count, ==, 0);
g_assert_cmpint(h1.read_count, ==, 6);
g_assert_cmpstr(h1.read_buf, ==, "hello");
h1.read_count = 0;
qemu_chr_be_write(base, (void *)"\1b", 2);
g_assert_cmpint(h1.last_event, ==, CHR_EVENT_BREAK);
g_assert_cmpint(h2.last_event, ==, CHR_EVENT_MUX_OUT);
/* open/close state and corresponding events */
g_assert_true(qemu_chr_fe_backend_open(&chr_be1));
g_assert_true(qemu_chr_fe_backend_open(&chr_be2));
g_assert_true(h1.is_open);
g_assert_false(h1.openclose_mismatch);
g_assert_true(h2.is_open);
g_assert_false(h2.openclose_mismatch);
h1.openclose_count = h2.openclose_count = 0;
qemu_chr_fe_set_handlers(&chr_be1, NULL, NULL, NULL, NULL,
NULL, NULL, false);
qemu_chr_fe_set_handlers(&chr_be2, NULL, NULL, NULL, NULL,
NULL, NULL, false);
g_assert_cmpint(h1.openclose_count, ==, 0);
g_assert_cmpint(h2.openclose_count, ==, 0);
h1.is_open = h2.is_open = false;
qemu_chr_fe_set_handlers(&chr_be1,
NULL,
NULL,
fe_event,
NULL,
&h1,
NULL, false);
qemu_chr_fe_set_handlers(&chr_be2,
NULL,
NULL,
fe_event,
NULL,
&h2,
NULL, false);
g_assert_cmpint(h1.openclose_count, ==, 1);
g_assert_false(h1.openclose_mismatch);
g_assert_cmpint(h2.openclose_count, ==, 1);
g_assert_false(h2.openclose_mismatch);
qemu_chr_be_event(base, CHR_EVENT_CLOSED);
qemu_chr_be_event(base, CHR_EVENT_OPENED);
g_assert_cmpint(h1.openclose_count, ==, 3);
g_assert_false(h1.openclose_mismatch);
g_assert_cmpint(h2.openclose_count, ==, 3);
g_assert_false(h2.openclose_mismatch);
qemu_chr_fe_set_handlers(&chr_be2,
fe_can_read,
fe_read,
fe_event,
NULL,
&h2,
NULL, false);
qemu_chr_fe_set_handlers(&chr_be1,
fe_can_read,
fe_read,
fe_event,
NULL,
&h1,
NULL, false);
/* remove first handler */
qemu_chr_fe_set_handlers(&chr_be1, NULL, NULL, NULL, NULL,
NULL, NULL, true);
qemu_chr_be_write(base, (void *)"hello", 6);
g_assert_cmpint(h1.read_count, ==, 0);
g_assert_cmpint(h2.read_count, ==, 0);
qemu_chr_be_write(base, (void *)"\1c", 2);
qemu_chr_be_write(base, (void *)"hello", 6);
g_assert_cmpint(h1.read_count, ==, 0);
g_assert_cmpint(h2.read_count, ==, 6);
g_assert_cmpstr(h2.read_buf, ==, "hello");
h2.read_count = 0;
/* print help */
qemu_chr_be_write(base, (void *)"\1?", 2);
data = qmp_ringbuf_read("mux-label-base", 128, false, 0, &error_abort);
g_assert_cmpint(strlen(data), !=, 0);
g_free(data);
qemu_chr_fe_deinit(&chr_be1, false);
qemu_chr_fe_deinit(&chr_be2, true);
}
static void char_mux_test(void)
{
QemuOpts *opts;
Chardev *chr, *base;
char *data;
FeHandler h1 = { 0, }, h2 = { 0, };
CharBackend chr_be1, chr_be2;
opts = qemu_opts_create(qemu_find_opts("chardev"), "mux-label",
1, &error_abort);
qemu_opt_set(opts, "backend", "ringbuf", &error_abort);
qemu_opt_set(opts, "size", "128", &error_abort);
qemu_opt_set(opts, "mux", "on", &error_abort);
chr = qemu_chr_new_from_opts(opts, &error_abort);
g_assert_nonnull(chr);
qemu_opts_del(opts);
qemu_chr_fe_init(&chr_be1, chr, &error_abort);
qemu_chr_fe_set_handlers(&chr_be1,
fe_can_read,
fe_read,
fe_event,
NULL,
&h1,
NULL, true);
qemu_chr_fe_init(&chr_be2, chr, &error_abort);
qemu_chr_fe_set_handlers(&chr_be2,
fe_can_read,
fe_read,
fe_event,
NULL,
&h2,
NULL, true);
qemu_chr_fe_take_focus(&chr_be2);
base = qemu_chr_find("mux-label-base");
g_assert_cmpint(qemu_chr_be_can_write(base), !=, 0);
qemu_chr_be_write(base, (void *)"hello", 6);
g_assert_cmpint(h1.read_count, ==, 0);
g_assert_cmpint(h2.read_count, ==, 6);
g_assert_cmpstr(h2.read_buf, ==, "hello");
h2.read_count = 0;
/* switch focus */
qemu_chr_be_write(base, (void *)"\1c", 2);
qemu_chr_be_write(base, (void *)"hello", 6);
g_assert_cmpint(h2.read_count, ==, 0);
g_assert_cmpint(h1.read_count, ==, 6);
g_assert_cmpstr(h1.read_buf, ==, "hello");
h1.read_count = 0;
/* remove first handler */
qemu_chr_fe_set_handlers(&chr_be1, NULL, NULL, NULL, NULL,
NULL, NULL, true);
qemu_chr_be_write(base, (void *)"hello", 6);
g_assert_cmpint(h1.read_count, ==, 0);
g_assert_cmpint(h2.read_count, ==, 0);
qemu_chr_be_write(base, (void *)"\1c", 2);
qemu_chr_be_write(base, (void *)"hello", 6);
g_assert_cmpint(h1.read_count, ==, 0);
g_assert_cmpint(h2.read_count, ==, 6);
g_assert_cmpstr(h2.read_buf, ==, "hello");
h2.read_count = 0;
/* print help */
qemu_chr_be_write(base, (void *)"\1?", 2);
data = qmp_ringbuf_read("mux-label-base", 128, false, 0, &error_abort);
g_assert_cmpint(strlen(data), !=, 0);
g_free(data);
qemu_chr_fe_deinit(&chr_be1, false);
qemu_chr_fe_deinit(&chr_be2, true);
}
static void ss_realize(DeviceState *dev, Error **errp)
{
SlaveBootInt *s = SBI(dev);
const char *prefix = object_get_canonical_path(OBJECT(dev));
unsigned int i;
const char *port_name;
Chardev *chr;
for (i = 0; i < ARRAY_SIZE(slave_boot_regs_info); ++i) {
DepRegisterInfo *r = &s->regs_info[
slave_boot_regs_info[i].decode.addr / 4];
*r = (DepRegisterInfo) {
.data = (uint8_t *)&s->regs[
slave_boot_regs_info[i].decode.addr / 4],
.data_size = sizeof(uint32_t),
.access = &slave_boot_regs_info[i],
.debug = SBI_ERR_DEBUG,
.prefix = prefix,
.opaque = s,
};
}
port_name = g_strdup("smap_busy_b");
qdev_init_gpio_out_named(dev, &s->smap_busy, port_name, 1);
g_free((gpointer) port_name);
port_name = g_strdup("smap_in_b");
qdev_init_gpio_in_named(dev, smap_update, port_name, 2);
g_free((gpointer) port_name);
chr = qemu_chr_find("sbi");
qdev_prop_set_chr(dev, "chardev", chr);
if (!qemu_chr_fe_get_driver(&s->chr)) {
DPRINT("SBI interface not connected\n");
} else {
qemu_chr_fe_set_handlers(&s->chr, ss_sbi_can_receive, ss_sbi_receive,
NULL, NULL, s, NULL, true);
}
fifo_create8(&s->fifo, 1024 * 4);
}
static void ss_reset(DeviceState *dev)
{
SlaveBootInt *s = SBI(dev);
uint32_t i;
for (i = 0; i < ARRAY_SIZE(s->regs_info); ++i) {
dep_register_reset(&s->regs_info[i]);
}
fifo_reset(&s->fifo);
s->busy_line = 1;
qemu_set_irq(s->smap_busy, s->busy_line);
ss_update_busy_line(s);
sbi_update_irq(s);
/* Note : cs always 0 when rp is not connected
* i.e slave always respond to master data irrespective of
* master state
*
* as rdwr is also 0, initial state of sbi is data load. Hack this bit
* to become 1, when sbi changes to write mode. So, its assumed in
* non remote-port model master should expect data when slave wishes
* to send.
*/
}
