uart.c

uart全功能实现.实现如下函数: U_Open, U_Close, U_GetBytes, U_PutBytes, U_GetBytesAvail, U_GetTxRoomL

/*****************************************************************************
*  Copyright Statement:
*  --------------------
*  This software is protected by Copyright and the information contained
*  herein is confidential. The software may not be copied and the information
*  contained herein may not be used or disclosed except with the written
*  permission of MediaTek Inc. (C) 2005
*
*  BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
*  THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
*  RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO BUYER ON
*  AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
*  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
*  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
*  NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
*  SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
*  SUPPLIED WITH THE MEDIATEK SOFTWARE, AND BUYER AGREES TO LOOK ONLY TO SUCH
*  THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. MEDIATEK SHALL ALSO
*  NOT BE RESPONSIBLE FOR ANY MEDIATEK SOFTWARE RELEASES MADE TO BUYER'S
*  SPECIFICATION OR TO CONFORM TO A PARTICULAR STANDARD OR OPEN FORUM.
*
*  BUYER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND CUMULATIVE
*  LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
*  AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
*  OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY BUYER TO
*  MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE. 
*
*  THE TRANSACTION CONTEMPLATED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE
*  WITH THE LAWS OF THE STATE OF CALIFORNIA, USA, EXCLUDING ITS CONFLICT OF
*  LAWS PRINCIPLES.  ANY DISPUTES, CONTROVERSIES OR CLAIMS ARISING THEREOF AND
*  RELATED THERETO SHALL BE SETTLED BY ARBITRATION IN SAN FRANCISCO, CA, UNDER
*  THE RULES OF THE INTERNATIONAL CHAMBER OF COMMERCE (ICC).
*
*****************************************************************************/

/*****************************************************************************
 *
 * Filename:
 * --------- 
 *    uart.c      
 *
 * Project:
 * --------
 *   Maui_Software
 *
 * Description:
 * ------------
 *   This Module defines the uart1 driver and the adaption layer
 *   between driver and maui protocol.
 *
 * Author:
 * -------
 * -------
 * -------
 *
 *============================================================================
 *             HISTORY
 * Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
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 *============================================================================
 ****************************************************************************/
#include    "kal_release.h"
#include    "stack_common.h"
#include    "stack_msgs.h"
#include    "app_ltlcom.h"       /* Task message communiction */
#include    "stack_buff_pool.h"
#include    "app_buff_alloc.h"
#include    "drv_comm.h"
#include    "reg_base.h"
#include    "uart_hw.h"
#include    "bmd.h"
#include    "intrCtrl.h"
#include    "drvpdn.h"
#include    "stack_ltlcom.h"       /*msg_send_ext_queue.....definitions*/
#include    "stack_config.h"        /*MOD_UART1_HISR,MOD_UART2_HISR*/
#include    "uart_sw.h"
#include    "dma_hw.h"
#include    "dma_sw.h"
#include    "gpt_sw.h"
#include    "init.h"
#include    "drv_hisr.h"
#ifdef __ROMSA_SUPPORT__
#ifndef __ROMSA_EXPORT_UART_H__
#include "romsa_export_uart.h"
#endif
#include    "gpt_hw.h"
#endif

#ifdef VFIFO_DBG
#include "string.h"
static kal_uint32 gUART_TrxHandler_VFIFO;
static kal_uint32 gUART_RecHandler_VFIFO;
static kal_uint32 gUART_RecTimeOutHandler;
#endif

#ifdef MCU_13M
   #define   UART_CLOCK   13000000    /* 13M */
#endif   /*MCU_13M*/

#ifdef MCU_26M
   #define   UART_CLOCK   26000000    /* 26M */
#endif   /*MCU_26M*/

#ifdef MCU_39M
   #define   UART_CLOCK   39000000    /* 39M */
#endif   /*MCU_39M*/

#ifdef MCU_52M
   #define   UART_CLOCK   52000000    /* 52M */
#endif   /*MCU_52M*/

#ifdef MCU_104M
   #define   UART_CLOCK  52000000    /* 104M */
#endif   /*MCU_104M*/

kal_uint8 UART_handle;
#ifndef __PRODUCTION_RELEASE__
   kal_uint8 uart_lcr_save[MAX_UART_PORT_NUM];
#endif   /*__PRODUCTION_RELEASE__*/

#if ( (defined(MT6218))||defined(MT6226M) || (defined(MT6218B)) || (defined(MT6219)) ||(defined(MT6217))||(defined(MT6228))|| defined(MT6229)|| (defined(MT6226))|| (defined(MT6227)) )
   kal_uint8                      uart2_dmaport;
   static DMA_INPUT               uart2_input;
   static DMA_HWRINGBUFF_MENU     uart2_txmenu;
   static UART_RingBuffer_SaveIndex       uart2_index_save;
#endif   /*MT6218*/

UARTStruct UARTPort[MAX_UART_PORT_NUM];
static kal_bool   UART2_Intr_is_Running;
static kal_bool   UART2_race_check;
static UART_flowCtrlMode  old_uart_portswitch_fctrl = fc_hw;

#ifdef DRV_DEBUG