mirror of https://gitee.com/openkylin/linux.git
61 lines
2.0 KiB
C
61 lines
2.0 KiB
C
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Copyright 2004 Ralf Baechle <ralf@linux-mips.org>
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*/
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#include <asm/sn/addrs.h>
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#include <asm/sn/sn0/hub.h>
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#include <asm/sn/klconfig.h>
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#include <asm/sn/ioc3.h>
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#include <asm/sn/sn_private.h>
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#include <linux/serial.h>
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#include <linux/serial_core.h>
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#include <linux/serial_reg.h>
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#define IOC3_CLK (22000000 / 3)
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#define IOC3_FLAGS (0)
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static inline struct ioc3_uartregs *console_uart(void)
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{
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struct ioc3 *ioc3;
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ioc3 = (struct ioc3 *)KL_CONFIG_CH_CONS_INFO(get_nasid())->memory_base;
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return &ioc3->sregs.uarta;
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}
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unsigned char getDebugChar(void)
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{
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struct ioc3_uartregs *uart = console_uart();
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while ((uart->iu_lsr & UART_LSR_DR) == 0);
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return uart->iu_rbr;
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}
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void putDebugChar(unsigned char c)
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{
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struct ioc3_uartregs *uart = console_uart();
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while ((uart->iu_lsr & UART_LSR_THRE) == 0);
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uart->iu_thr = c;
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}
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