C++ (Cpp) sun4v_con_read Beispiele

Beispiel #1

Datei: sunhv.c Projekt: AlexShiLucky/linux

static int receive_chars_read(struct uart_port *port)
{
	static int saw_console_brk;
	int limit = 10000;

	while (limit-- > 0) {
		unsigned long ra = __pa(con_read_page);
		unsigned long bytes_read, i;
		long stat = sun4v_con_read(ra, PAGE_SIZE, &bytes_read);

		if (stat != HV_EOK) {
			bytes_read = 0;

			if (stat == CON_BREAK) {
				if (saw_console_brk)
					sun_do_break();

				if (uart_handle_break(port))
					continue;
				saw_console_brk = 1;
				*con_read_page = 0;
				bytes_read = 1;
			} else if (stat == CON_HUP) {
				hung_up = 1;
				uart_handle_dcd_change(port, 0);
				continue;
			} else {
				/* HV_EWOULDBLOCK, etc.  */
				break;
			}
		}

		if (hung_up) {
			hung_up = 0;
			uart_handle_dcd_change(port, 1);
		}

		if (port->sysrq != 0 &&  *con_read_page) {
			for (i = 0; i < bytes_read; i++)
				uart_handle_sysrq_char(port, con_read_page[i]);
			saw_console_brk = 0;
		}

		if (port->state == NULL)
			continue;

		port->icount.rx += bytes_read;

		tty_insert_flip_string(&port->state->port, con_read_page,
				bytes_read);
	}

	return saw_console_brk;
}

Beispiel #2

Datei: sunhv.c Projekt: kzlin129/tt-gpl

static int receive_chars_read(struct uart_port *port, struct tty_struct *tty)
{
	int saw_console_brk = 0;
	int limit = 10000;

	while (limit-- > 0) {
		unsigned long ra = __pa(con_read_page);
		unsigned long bytes_read, i;
		unsigned long breaks_received = 0;
		long stat = sun4v_con_read(ra, PAGE_SIZE, &bytes_read);

		if (stat != HV_EOK) {
			bytes_read = 0;

			if (stat == CON_BREAK) {
				if (uart_handle_break(port))
					continue;
				saw_console_brk = 1;
				*con_read_page = 0;
				bytes_read = 1;
			} else if (stat == CON_HUP) {
				hung_up = 1;
				uart_handle_dcd_change(port, 0);
				continue;
			} else {
				/* HV_EWOULDBLOCK, etc.  */
				break;
			}
		}

#ifdef CONFIG_CONSOLE_POLL
                if (port->poll_rx_cb) {
			for (i = 0; i < bytes_read; i++) {
				if (port->poll_rx_cb(con_read_page[i] & 255)) {
					if ((bytes_read - i - 1) != 0)
						memcpy(&con_read_page[i], &con_read_page[i+1], bytes_read - i - 1);
					breaks_received++;
					continue;
				} else
					uart_handle_sysrq_char(port, con_read_page[i]);
			}
		}
#endif

		if (hung_up) {
			hung_up = 0;
			uart_handle_dcd_change(port, 1);
		}

#ifndef CONFIG_CONSOLE_POLL
		for (i = 0; i < bytes_read; i++)
			uart_handle_sysrq_char(port, con_read_page[i]);
#endif

		if (tty == NULL)
			continue;

		port->icount.rx += bytes_read - breaks_received;

		tty_insert_flip_string(tty, con_read_page, bytes_read - breaks_received);
	}

	return saw_console_brk;
}