?? usbshed.c
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/*****************************Copyright(c)****************************************************************
** Guangzhou ZHIYUAN electronics Co.,LTD.
**
** http://www.embedtools.com
**
**------File Info-----------------------------------------------------------------------------------------
** File Name: usbShed.c
** Latest modified Date: 2007-11-24
** Latest Version: V1.0
** Description: 調度任務的實現
**
**--------------------------------------------------------------------------------------------------------
** Created By: 吳隆穗 Longsui Wu
** Created date: 2007-11-06
** Version: V1.0
** Descriptions: 初始版本
**
**--------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
** Version:
** Description:
**
**--------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
** Version:
** Description:
**
*********************************************************************************************************/
#include "USBHostConfig.h"
#include "stdlib.h"
OS_EVENT *__GevtUsbMsgQeue; /* 調度消息隊列 */
void *__GevtUsbMsgQeueTbl[__USB_MSGQEUE_LENGTH]; /* 消息隊列緩沖區 */
OS_EVENT *__GevtUsbCtrlMbox; /* 控制傳輸郵箱 */
OS_EVENT *__GevtUsbDataTranMbox; /* 批量,中斷傳輸郵箱 */
OS_EVENT *__GevtUsbCtrlSem; /* 控制傳輸信號量,用于實現互斥 */
OS_EVENT *__GevtUsbDataTranSem; /* 批量,中斷傳輸信號量 */
#define __TASK_USB_SCHED_STK_LEN 512 /* 調度任務堆棧長度 */
#define __TASK_USB_ENUM_STK_LEN 512 /* 枚舉任務堆棧長度 */
void __taskUsbSheduler (void *pdata);
void __taskUsbEnum (void *pdata);
void __usbEnumDeal (USB_INT8U ucCode);
void __usbDoneHeadDeal (USB_INT32U uiTdHeadDoneList);
void __usbConectChange (USB_INT32U uiCode, USB_INT32U uiEnumPrio);
OS_STK __taskUsbShedulerStk [__TASK_USB_SCHED_STK_LEN]; /* 調度任務堆棧 */
OS_STK __taskUsbEnumStk [__TASK_USB_ENUM_STK_LEN]; /* 枚舉任務堆棧 */
/*********************************************************************************************************
** Function name: __usbShedInit
** Descriptions: USB調度的環境初始化化,主要是初始化消息隊列,消息郵箱等
** input parameters: None
** output parameters: None
** Returned value: TRUE : 成功 FALSE : 失敗
*********************************************************************************************************/
USB_BOOL __usbShedInit (void)
{
__GevtUsbMsgQeue = OSQCreate(&__GevtUsbMsgQeueTbl[0], __USB_MSGQEUE_LENGTH);
if (__GevtUsbMsgQeue == NULL) {
return FALSE;
}
__GevtUsbCtrlMbox = OSMboxCreate((void *)0);
if (__GevtUsbCtrlMbox == NULL) {
return FALSE;
}
__GevtUsbDataTranMbox = OSMboxCreate((void *)0);
if (__GevtUsbDataTranMbox == NULL) {
return FALSE;
}
__GevtUsbCtrlSem = OSSemCreate(1);
if (__GevtUsbCtrlSem == NULL) {
return FALSE;
}
__GevtUsbDataTranSem = OSSemCreate(1);
if (__GevtUsbDataTranSem == NULL) {
return FALSE;
}
return TRUE;
}
/*********************************************************************************************************
** Function name: __usbCreateShedTask
** Descriptions: 創建調度任務
** input parameters: None
** output parameters: None
** Returned value: TRUE : 創建成功 FALSE : 創建失敗
*********************************************************************************************************/
USB_BOOL __usbCreateShedTask (USB_INT8U ucShedPrio, USB_INT8U ucEnumPrio)
{
if (OSTaskCreate(__taskUsbSheduler, (void *)(USB_INT32U)ucEnumPrio, \
&__taskUsbShedulerStk[__TASK_USB_SCHED_STK_LEN - 1], ucShedPrio) == OS_NO_ERR) {
return TRUE;
} else {
USBDEBUG_SENDSTR("\r\n!!Create scheduler task failed!\r\n ");
return FALSE;
}
}
/*********************************************************************************************************
** Function name: __taskUsbSheduler
** Descriptions: uC/OS-II任務,用于對USB的各個事件進行調度
** input parameters: pdata: uC/OS-II要求的參數
** output parameters: None
** Returned value: None
*********************************************************************************************************/
void __taskUsbSheduler (void *pdata)
{
INT8U ucErr;
INT32U uiMsgCode;
while (1) {
uiMsgCode = (INT32U)OSQPend(__GevtUsbMsgQeue, 0, &ucErr);
if (ucErr == OS_NO_ERR) {
switch ((__USBLSB(uiMsgCode, 3)) & 0xF0U) { /* BIT31~24為事件類型 */
case __USB_SHED_CONCHANGE: /* 連接改變 */
__usbConectChange(uiMsgCode, (USB_INT32U)pdata);
break;
case __USB_SHED_DONEHEAD: /* Write back done處理 */
__usbDoneHeadDeal((uiMsgCode << 4) & 0xFFFFFFF0);
break;
case __USB_SHED_SHEDOVERRUN: /* SchedulingOverrun 處理 */
USBDEBUG_SENDSTR("\r\nSchedulingOverrun\r\n");
break;
case __USB_SHED_UNRECERROR: /* Unrecoverable Error */
USBDEBUG_SENDSTR("\r\nUnrecoverable Error\r\n");
break;
case __USB_SHED_DELSELF: /* 刪除自身任務 */
OSTaskDel(OS_PRIO_SELF);
break;
default:
USBDEBUG_SENDSTR("\r\n!!Unknow MsgCode!\r\n\r\n");
break;
}
}
}
}
/*********************************************************************************************************
** Function name: __usbDoneHeadDeal
** Descriptions: 對write back done進行處理
** input parameters: uiTdHeadDoneList 傳輸完成鏈表表頭指針
** output parameters: None
** Returned value: None
*********************************************************************************************************/
void __usbDoneHeadDeal (USB_INT32U uiTdHeadDoneList)
{
USB_INT8U ucErrorCode;
USB_INT8U ucType;
__PHC_GEN_TRANSFER_DESCRIPTOR pTdHeadDoneList;
__ED_INFO edInfo;
pTdHeadDoneList = (__PHC_GEN_TRANSFER_DESCRIPTOR)uiTdHeadDoneList;
ucType = __hcdGetTdType(pTdHeadDoneList); /* 獲取傳輸類型 */
ucErrorCode = (USB_INT8U)((pTdHeadDoneList->uiControl >> 28) & 0x0F);
/* 獲取錯誤碼,詳見OHCI規范4.3.3*/
__hcdGetEdInfo(ucType, &edInfo);
if (ucErrorCode != USB_ERR_NOERR) { /* 非正常結束 */
USBDEBUG_SENDSTR("\r\n!!Erroe code: ");
USBDEBUG_SENDCHAR((USB_INT8U)(ucErrorCode + 0x30));
USBDEBUG_SENDSTR("!!!\r\n\r\n");
__hcdEdLetHeadEquTail(&edInfo); /* 強制 HeadP = TailP */
__hcdFreeAllTd(&edInfo); /* 釋放所有 TD 資源 */
if (ucType == USB_TRAN_TYPE_CONTROL) { /* 發送重試信息給傳輸函數 */
OSMboxPost(__GevtUsbCtrlMbox, (void *)((ucErrorCode << 24) | __USB_TRANDEAL_ERR_TRY));
} else {
OSMboxPost(__GevtUsbDataTranMbox, (void *)((ucErrorCode << 24) | __USB_TRANDEAL_ERR_TRY));
}
} else { /* 傳輸正常 */
if (ucType == USB_TRAN_TYPE_CONTROL) { /* 控制傳輸 */
if ((USB_INT32U)pTdHeadDoneList == (USB_INT32U)__GsTranEndTd.pCtrlEndTd) {
/* 判斷傳輸是否完畢 */
__GsTranEndTd.pCtrlEndTd = NULL;
__hcdFreeAllTd(&edInfo);
OSMboxPost(__GevtUsbCtrlMbox, (void *)__USB_TRANDEAL_OK);
}
} else { /* 數據傳輸(BULK或INTR傳輸) */
if ((USB_INT32U)pTdHeadDoneList == (USB_INT32U)__GsTranEndTd.pDataEndTd) {
__GsTranEndTd.pDataEndTd = NULL;
__hcdFreeAllTd(&edInfo);
OSMboxPost(__GevtUsbDataTranMbox, (void *)__USB_TRANDEAL_OK);
}
}
}
}
/*********************************************************************************************************
** Function name: __usbConectChange
** Descriptions: 連接改變處理
** input parameters: uiCode 包括設備是插入還是撥出的信息代碼
** uiEnumPrio 枚舉任務的優先級
** output parameters: None
** Returned value: None
*********************************************************************************************************/
void __usbConectChange (USB_INT32U uiCode, USB_INT32U uiEnumPrio)
{
USB_INT8U ucErr, bRet;
if (__USBLSB(uiCode, 0) == 0x00) {
if (GusbHostFlags.ucAttached == 0) {
__ohciInit();
return;
}
OS_ENTER_CRITICAL();
GusbHostFlags.ucEnumed = 0;
GusbHostFlags.ucConfiged = 0;
GusbHostFlags.ucAttached = 0;
GusbHostFlags.ucCtrlPipe = 0;
GusbHostFlags.ucBulkOutPipe = 0;
GusbHostFlags.ucBulkInPipe = 0;
GusbHostFlags.ucIntrOutPipe = 0;
GusbHostFlags.ucIntrInPipe = 0;
OS_EXIT_CRITICAL();
usbPipeClose(USB_TRAN_TYPE_CONTROL);
usbPipeClose(USB_TRAN_TYPE_INTR_OUT);
usbPipeClose(USB_TRAN_TYPE_INTR_IN);
usbPipeClose(USB_TRAN_TYPE_BULK_OUT);
usbPipeClose(USB_TRAN_TYPE_BULK_IN);
__ohciInit();
USBDEBUG_SENDSTR("Device remove! Close Pipe!\r\n");
if (!OSTCBPrioTbl[(INT8U)uiEnumPrio]) { /* 設備撥出后,如果枚舉任務還在, */
OSTaskDelReq((INT8U)uiEnumPrio); /* ...則申請刪除 */
}
if (__GpDevDisconCallBack) {
(*__GpDevDisconCallBack)(); /* 執行設備撥出回調函數 */
}
} else {
OSTimeDly(20);
bRet = __ohciAffirmAttach(__USBLSB(uiCode, 1)); /* 確認設備是否仍處插入狀態(未撥出)*/
if (bRet == FALSE) {
__ohciInit();
return;
}
GusbHostFlags.ucAttached = 1;
USBDEBUG_SENDSTR("\r\n\r\nDevice attach!\r\n");
__hcdInit();
__ohciInit2(__USBLSB(uiCode, 1));
uiEnumPrio = uiEnumPrio & 0xFF;
if (GusbHostFlags.ucCtrlPipe == 1) {
return;
}
usbPipeOpen(USB_TRAN_TYPE_CONTROL);
USBDEBUG_SENDSTR("Open Pipe!\r\n");
ucErr = OSTaskCreate(__taskUsbEnum, (void *)0, &__taskUsbEnumStk[__TASK_USB_ENUM_STK_LEN - 1], \
(USB_INT8U)uiEnumPrio);
if (ucErr == OS_NO_ERR) {
USBDEBUG_SENDSTR("\r\n Create Enumerate task sucess! Start enumerate...\r\n");
USBDEBUG_SENDSTR("\r\n\r\n Create Enumerate task failed!\r\n");
}
}
}
/*********************************************************************************************************
** Function name: __usbEnumDeal
** Descriptions: 枚舉后的處理
** input parameters: ucCode 枚舉是否成功標志
** output parameters: None
** Returned value: None
*********************************************************************************************************/
void __usbEnumDeal (USB_INT8U ucCode)
{
if (ucCode == 0x01) {
usbPipeOpen(USB_TRAN_TYPE_INTR_OUT);
usbPipeOpen(USB_TRAN_TYPE_INTR_IN);
usbPipeOpen(USB_TRAN_TYPE_BULK_OUT);
usbPipeOpen(USB_TRAN_TYPE_BULK_IN);
}
}
/*********************************************************************************************************
END FILE
*********************************************************************************************************/ ?? 快捷鍵說明
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