11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * This file is subject to the terms and conditions of the GNU General Public 31da177e4SLinus Torvalds * License. See the file "COPYING" in the main directory of this archive 41da177e4SLinus Torvalds * for more details. 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * Copyright (C) 2001, 2002 Ralf Baechle 71da177e4SLinus Torvalds */ 81da177e4SLinus Torvalds 91da177e4SLinus Torvalds #include <asm/page.h> 105c93316cSAlexander Sverdlin #include <asm/setup.h> 111da177e4SLinus Torvalds #include <asm/sn/addrs.h> 121da177e4SLinus Torvalds #include <asm/sn/sn0/hub.h> 131da177e4SLinus Torvalds #include <asm/sn/klconfig.h> 141da177e4SLinus Torvalds #include <asm/sn/ioc3.h> 151da177e4SLinus Torvalds #include <asm/sn/sn_private.h> 161da177e4SLinus Torvalds 171da177e4SLinus Torvalds #include <linux/serial.h> 181da177e4SLinus Torvalds #include <linux/serial_core.h> 191da177e4SLinus Torvalds 201da177e4SLinus Torvalds #define IOC3_CLK (22000000 / 3) 211da177e4SLinus Torvalds #define IOC3_FLAGS (0) 221da177e4SLinus Torvalds 231da177e4SLinus Torvalds static inline struct ioc3_uartregs *console_uart(void) 241da177e4SLinus Torvalds { 251da177e4SLinus Torvalds struct ioc3 *ioc3; 2601d42abdSRalf Baechle nasid_t nasid; 271da177e4SLinus Torvalds 2801d42abdSRalf Baechle nasid = (master_nasid == INVALID_NASID) ? get_nasid() : master_nasid; 2901d42abdSRalf Baechle ioc3 = (struct ioc3 *)KL_CONFIG_CH_CONS_INFO(nasid)->memory_base; 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds return &ioc3->sregs.uarta; 321da177e4SLinus Torvalds } 331da177e4SLinus Torvalds 34f7be4e75SAaro Koskinen void prom_putchar(char c) 351da177e4SLinus Torvalds { 361da177e4SLinus Torvalds struct ioc3_uartregs *uart = console_uart(); 371da177e4SLinus Torvalds 38*cbe7d517SThomas Bogendoerfer while ((readb(&uart->iu_lsr) & 0x20) == 0) 39*cbe7d517SThomas Bogendoerfer ; 40*cbe7d517SThomas Bogendoerfer writeb(c, &uart->iu_thr); 411da177e4SLinus Torvalds } 42