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ip27-console.c
Package: linux-2.4.20.tar.gz　[view]
Upload User: jlfgdled
Upload Date: 2013-04-10
Package Size: 33168k
Code Size: 1k
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Linux-Unix program

Development Platform:

Unix_Linux

ip27-console.c：Code Content
  1. /*
  2.  * This file is subject to the terms and conditions of the GNU General Public
  3.  * License.  See the file "COPYING" in the main directory of this archive
  4.  * for more details.
  5.  *
  6.  * Copyright (C) 2001 Ralf Baechle
  7.  */
  8. #include <linux/init.h>
  9. #include <linux/console.h>
  10. #include <linux/kdev_t.h>
  11. #include <linux/major.h>
  12. #include <asm/sn/addrs.h>
  13. #include <asm/sn/sn0/hub.h>
  14. #include <asm/sn/klconfig.h>
  15. #include <asm/sn/ioc3.h>
  16. #include <asm/sn/sn_private.h>
  18. void prom_putchar(char c)
  19. {
  20. struct ioc3 *ioc3;
  21. struct ioc3_uartregs *uart;
  23. ioc3 = (struct ioc3 *)KL_CONFIG_CH_CONS_INFO(master_nasid)->memory_base;
  24. uart = &ioc3->sregs.uarta;
  26. while ((uart->iu_lsr & 0x20) == 0);
  27. uart->iu_thr = c;
  28. }
  30. char __init prom_getchar(void)
  31. {
  32. return 0;
  33. }
  35. static void
  36. ip27prom_console_write(struct console *con, const char *s, unsigned n)
  37. {
  38. prom_printf("%s", s);
  39. }
  41. static kdev_t
  42. ip27prom_console_dev(struct console *c)
  43. {
  44. return MKDEV(TTY_MAJOR, 64 + c->index);
  45. }
  47. static struct console ip27_prom_console = {
  48.     name: "prom",
  49.     write: ip27prom_console_write,
  50.     device: ip27prom_console_dev,
  51.     flags: CON_PRINTBUFFER,
  52.     index: -1,
  53. };
  55. __init void ip27_setup_console(void)
  56. {
  57. register_console(&ip27_prom_console);
  58. }