185 lines
6.4 KiB
C
185 lines
6.4 KiB
C
/*******************************************************************************
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Copyright (C) Marvell International Ltd. and its affiliates
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This software file (the "File") is owned and distributed by Marvell
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International Ltd. and/or its affiliates ("Marvell") under the following
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alternative licensing terms. Once you have made an election to distribute the
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File under one of the following license alternatives, please (i) delete this
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introductory statement regarding license alternatives, (ii) delete the two
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license alternatives that you have not elected to use and (iii) preserve the
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Marvell copyright notice above.
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********************************************************************************
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Marvell Commercial License Option
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If you received this File from Marvell and you have entered into a commercial
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license agreement (a "Commercial License") with Marvell, the File is licensed
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to you under the terms of the applicable Commercial License.
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********************************************************************************
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Marvell GPL License Option
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If you received this File from Marvell, you may opt to use, redistribute and/or
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modify this File in accordance with the terms and conditions of the General
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Public License Version 2, June 1991 (the "GPL License"), a copy of which is
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available along with the File in the license.txt file or by writing to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or
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on the worldwide web at http://www.gnu.org/licenses/gpl.txt.
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THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED
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WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY
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DISCLAIMED. The GPL License provides additional details about this warranty
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disclaimer.
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********************************************************************************
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Marvell BSD License Option
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If you received this File from Marvell, you may opt to use, redistribute and/or
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modify this File under the following licensing terms.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Marvell nor the names of its contributors may be
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used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF 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 THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*******************************************************************************/
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#include "mvUart.h"
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/* static variables */
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static volatile MV_UART_PORT* uartBase[MV_UART_MAX_CHAN];
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/*******************************************************************************
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* mvUartInit - Init a uart port.
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*
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* DESCRIPTION:
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* This routine Initialize one of the uarts ports (channels).
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* It initialize the baudrate, stop bit,parity bit etc.
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*
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* INPUT:
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* port - uart port number.
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* baudDivisor - baud divisior to use for the uart port.
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*
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* OUTPUT:
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* None.
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*
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* RETURN:
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* None.
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*
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*******************************************************************************/
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MV_VOID mvUartInit(MV_U32 port, MV_U32 baudDivisor, MV_UART_PORT* base)
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{
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volatile MV_UART_PORT *pUartPort;
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#if defined(MV_UART_OVER_PEX_WA) || defined(MV_UART_OVER_PCI_WA)
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uartBase[port] = pUartPort = (volatile MV_UART_PORT *)(base);
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return;
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#else
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uartBase[port] = pUartPort = (volatile MV_UART_PORT *)base;
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pUartPort->ier = 0x00;
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pUartPort->lcr = LCR_DIVL_EN; /* Access baud rate */
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pUartPort->dll = baudDivisor & 0xff; /* 9600 baud */
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pUartPort->dlm = (baudDivisor >> 8) & 0xff;
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pUartPort->lcr = LCR_8N1; /* 8 data, 1 stop, no parity */
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/* Clear & enable FIFOs */
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pUartPort->fcr = FCR_FIFO_EN | FCR_RXSR | FCR_TXSR;
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return;
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#endif
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}
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/*******************************************************************************
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* mvUartPutc - Send char to the uart port.
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*
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* DESCRIPTION:
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* This routine puts one charachetr on one of the uart ports.
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*
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* INPUT:
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* port - uart port number.
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* c - character.
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*
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* OUTPUT:
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* None.
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*
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* RETURN:
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* None.
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*
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*******************************************************************************/
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MV_VOID mvUartPutc(MV_U32 port, MV_U8 c)
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{
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volatile MV_UART_PORT *pUartPort = uartBase[port];
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while ((pUartPort->lsr & LSR_THRE) == 0) ;
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pUartPort->thr = c;
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return;
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}
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/*******************************************************************************
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* mvUartGetc - Get char from uart port.
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*
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* DESCRIPTION:
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* This routine gets one charachetr from one of the uart ports.
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*
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* INPUT:
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* port - uart port number.
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*
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* OUTPUT:
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* None.
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*
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* RETURN:
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* carachter from the uart port.
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*
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*******************************************************************************/
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MV_U8 mvUartGetc(MV_U32 port)
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{
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volatile MV_UART_PORT *pUartPort = uartBase[port];
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while ((pUartPort->lsr & LSR_DR) == 0) ;
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return (pUartPort->rbr);
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}
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/*******************************************************************************
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* mvUartTstc - test for char in uart port.
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*
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* DESCRIPTION:
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* This routine heck if a charachter is ready to be read from one of the
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* the uart ports.
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*
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* INPUT:
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* port - uart port number.
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*
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* OUTPUT:
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* None.
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*
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* RETURN:
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* None.
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*
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*******************************************************************************/
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MV_BOOL mvUartTstc(MV_U32 port)
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{
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volatile MV_UART_PORT *pUartPort = uartBase[port];
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return ((pUartPort->lsr & LSR_DR) != 0);
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}
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