parisc/kernel/pdc_cons.c

1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *    PDC Console support - ie use firmware to dump text via boot console
5  *    Copyright (C) 1999-2003 Matthew Wilcox <willy at parisc-linux.org>
7  *    Copyright (C) 2000 John Marvin <jsm at parisc-linux.org>
8  *    Copyright (C) 2000-2003 Paul Bame <bame at parisc-linux.org>
11  *    Copyright (C) 2000 Grant Grundler <grundler with parisc-linux.org>
12  *    Copyright (C) 2001-2002 Ryan Bradetich <rbrad at parisc-linux.org>
13  *    Copyright (C) 2001 Helge Deller <deller at parisc-linux.org>
14  *    Copyright (C) 2001 Thomas Bogendoerfer <tsbogend at parisc-linux.org>
15  *    Copyright (C) 2002 Randolph Chung <tausq with parisc-linux.org>
21  *  boot related problems on HP PA-RISC machines. It is also useful when no
52 		i += pdc_iodc_print(s + i, count - i);  in pdc_console_write()
94 	if (tty->count == 1) {  in pdc_console_tty_close()
130 		if (data == -1)  in pdc_console_poll()
163 		return -ENODEV;  in pdc_console_tty_driver_init()
172 		return -ENOMEM;  in pdc_console_tty_driver_init()
176 	pdc_console_tty_driver->driver_name = "pdc_cons";  in pdc_console_tty_driver_init()
177 	pdc_console_tty_driver->name = "ttyB";  in pdc_console_tty_driver_init()
178 	pdc_console_tty_driver->major = MUX_MAJOR;  in pdc_console_tty_driver_init()
179 	pdc_console_tty_driver->minor_start = 0;  in pdc_console_tty_driver_init()
180 	pdc_console_tty_driver->type = TTY_DRIVER_TYPE_SYSTEM;  in pdc_console_tty_driver_init()
181 	pdc_console_tty_driver->init_termios = tty_std_termios;  in pdc_console_tty_driver_init()
182 	pdc_console_tty_driver->flags = TTY_DRIVER_REAL_RAW |  in pdc_console_tty_driver_init()
200 	*index = c->index;  in pdc_console_device()
213 	.index =	-1,
225 	if (PAGE0->mem_cons.cl_class == CL_DUPLEX)  in pdc_console_init_force()
226 		memcpy(&PAGE0->mem_kbd, &PAGE0->mem_cons, sizeof(PAGE0->mem_cons));  in pdc_console_init_force()
246  * properly initialised after the PDC IO reset. This routine unregisters