haraldwolff/qemu-patch-raspberry4
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ui/console: replace kbd_timer with chr_accept_input callback

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There's a ChardevClass chr_accept_input() callback function that
can replace the write retry timer.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-Id: <20210916192239.18742-2-vr_qemu@t-online.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Volker Rümelin 2021-09-16 21:22:37 +02:00 committed by Gerd Hoffmann
parent 0c9d0641ac
commit ec22251904
1 changed files with 13 additions and 15 deletions
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28
ui/console.c
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@ -116,7 +116,6 @@ struct QemuConsole {
Chardev *chr;
/* fifo for key pressed */
Fifo8 out_fifo;
QEMUTimer *kbd_timer;
CoQueue dump_queue;
QTAILQ_ENTRY(QemuConsole) next;
@ -1106,30 +1105,21 @@ static int vc_chr_write(Chardev *chr, const uint8_t *buf, int len)
return len;
}
static void kbd_send_chars(void *opaque)
static void kbd_send_chars(QemuConsole *s)
{
QemuConsole *s = opaque;
uint32_t len, avail;
len = qemu_chr_be_can_write(s->chr);
avail = fifo8_num_used(&s->out_fifo);
if (len > avail) {
len = avail;
}
while (len > 0) {
while (len > 0 && avail > 0) {
const uint8_t *buf;
uint32_t size;
buf = fifo8_pop_buf(&s->out_fifo, len, &size);
buf = fifo8_pop_buf(&s->out_fifo, MIN(len, avail), &size);
qemu_chr_be_write(s->chr, (uint8_t *)buf, size);
len -= size;
len = qemu_chr_be_can_write(s->chr);
avail -= size;
}
/* characters are pending: we send them a bit later (XXX:
horrible, should change char device API) */
if (avail > 0) {
timer_mod(s->kbd_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1);
}
}
/* called when an ascii key is pressed */
@ -2141,6 +2131,14 @@ int qemu_console_get_height(QemuConsole *con, int fallback)
return con ? surface_height(con->surface) : fallback;
}
static void vc_chr_accept_input(Chardev *chr)
{
VCChardev *drv = VC_CHARDEV(chr);
QemuConsole *s = drv->console;
kbd_send_chars(s);
}
static void vc_chr_set_echo(Chardev *chr, bool echo)
{
VCChardev *drv = VC_CHARDEV(chr);
@ -2189,7 +2187,6 @@ static void text_console_do_init(Chardev *chr, DisplayState *ds)
int g_height = 24 * FONT_HEIGHT;
fifo8_create(&s->out_fifo, 16);
s->kbd_timer = timer_new_ms(QEMU_CLOCK_REALTIME, kbd_send_chars, s);
s->ds = ds;
s->y_displayed = 0;
@ -2439,6 +2436,7 @@ static void char_vc_class_init(ObjectClass *oc, void *data)
cc->parse = qemu_chr_parse_vc;
cc->open = vc_chr_open;
cc->chr_write = vc_chr_write;
cc->chr_accept_input = vc_chr_accept_input;
cc->chr_set_echo = vc_chr_set_echo;
}