| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify it |
| 3 | * under the terms of the GNU General Public License as published by the |
| 4 | * Free Software Foundation; either version 2 of the License, or (at your |
| 5 | * option) any later version. |
| 6 | * |
| 7 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 8 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 9 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN |
| 10 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 11 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 12 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 13 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| 14 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 15 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 16 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License along |
| 19 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 20 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 21 | * |
| 22 | * Copyright 2004 Ralf Baechle <ralf@linux-mips.org> |
| 23 | */ |
| 24 | #include <asm/sn/addrs.h> |
| 25 | #include <asm/sn/sn0/hub.h> |
| 26 | #include <asm/sn/klconfig.h> |
| 27 | #include <asm/sn/ioc3.h> |
| 28 | #include <asm/sn/sn_private.h> |
| 29 | |
| 30 | #include <linux/serial.h> |
| 31 | #include <linux/serial_core.h> |
| 32 | #include <linux/serial_reg.h> |
| 33 | |
| 34 | #define IOC3_CLK (22000000 / 3) |
| 35 | #define IOC3_FLAGS (0) |
| 36 | |
| 37 | static inline struct ioc3_uartregs *console_uart(void) |
| 38 | { |
| 39 | struct ioc3 *ioc3; |
| 40 | |
| 41 | ioc3 = (struct ioc3 *)KL_CONFIG_CH_CONS_INFO(get_nasid())->memory_base; |
| 42 | |
| 43 | return &ioc3->sregs.uarta; |
| 44 | } |
| 45 | |
| 46 | unsigned char getDebugChar(void) |
| 47 | { |
| 48 | struct ioc3_uartregs *uart = console_uart(); |
| 49 | |
| 50 | while ((uart->iu_lsr & UART_LSR_DR) == 0); |
| 51 | return uart->iu_rbr; |
| 52 | } |
| 53 | |
| 54 | void putDebugChar(unsigned char c) |
| 55 | { |
| 56 | struct ioc3_uartregs *uart = console_uart(); |
| 57 | |
| 58 | while ((uart->iu_lsr & UART_LSR_THRE) == 0); |
| 59 | uart->iu_thr = c; |
| 60 | } |