/*********************************************************************************************************
** 函数名称: _hotplugDevCreate
** 功能描述: 安装 hotplug 消息设备
** 输 入 : NONE
** 输 出 : 设备是否创建成功
** 全局变量:
** 调用模块:
API 函数
*********************************************************************************************************/
INT _hotplugDevCreate (VOID)
{
if (_G_iHotplugDrvNum <= 0) {
_DebugHandle(__ERRORMESSAGE_LEVEL, "no driver.\r\n");
_ErrorHandle(ERROR_IO_NO_DRIVER);
return (PX_ERROR);
}
_G_hotplugdev.HOTPDEV_plineFile = LW_NULL;
_G_hotplugdev.HOTPDEV_ulMutex = API_SemaphoreMCreate("hotplug_lock", LW_PRIO_DEF_CEILING,
LW_OPTION_DELETE_SAFE |
LW_OPTION_INHERIT_PRIORITY |
LW_OPTION_OBJECT_GLOBAL,
LW_NULL);
if (_G_hotplugdev.HOTPDEV_ulMutex == LW_OBJECT_HANDLE_INVALID) {
return (PX_ERROR);
}
SEL_WAKE_UP_LIST_INIT(&_G_hotplugdev.HOTPDEV_selwulList);
if (iosDevAddEx(&_G_hotplugdev.HOTPDEV_devhdrHdr, LW_HOTPLUG_DEV_PATH,
_G_iHotplugDrvNum, DT_CHR) != ERROR_NONE) {
API_SemaphoreMDelete(&_G_hotplugdev.HOTPDEV_ulMutex);
SEL_WAKE_UP_LIST_TERM(&_G_hotplugdev.HOTPDEV_selwulList);
return (PX_ERROR);
}
return (ERROR_NONE);
}
/*********************************************************************************************************
** 函数名称: API_PipeDevDelete
** 功能描述: 删除一个管道设备
** 输 入 :
** pcName 管道名称
** bForce 强制删除
** 输 出 : ERROR
** 全局变量:
** 调用模块:
API 函数
*********************************************************************************************************/
LW_API
INT API_PipeDevDelete (PCHAR pcName, BOOL bForce)
{
REGISTER PLW_PIPE_DEV p_pipedev;
PCHAR pcTail = LW_NULL;
if (LW_CPU_GET_CUR_NESTING()) {
_DebugHandle(__ERRORMESSAGE_LEVEL, "called from ISR.\r\n");
_ErrorHandle(ERROR_KERNEL_IN_ISR);
return (PX_ERROR);
}
if (_G_iPipeDrvNum <= 0) {
_DebugHandle(__ERRORMESSAGE_LEVEL, "no driver.\r\n");
_ErrorHandle(ERROR_IO_NO_DRIVER);
return (PX_ERROR);
}
p_pipedev = (PLW_PIPE_DEV)iosDevFind(pcName, &pcTail);
if ((p_pipedev == LW_NULL) || (pcName == pcTail)) {
_DebugHandle(__ERRORMESSAGE_LEVEL, "device not found.\r\n");
_ErrorHandle(ERROR_IOS_DEVICE_NOT_FOUND);
return (PX_ERROR);
}
if (bForce == LW_FALSE) {
if (LW_DEV_GET_USE_COUNT(&p_pipedev->PIPEDEV_devhdrHdr)) {
_DebugHandle(__ERRORMESSAGE_LEVEL, "too many open files.\r\n");
_ErrorHandle(EBUSY);
return (PX_ERROR);
}
if (SEL_WAKE_UP_LIST_LEN(&p_pipedev->PIPEDEV_selwulList) > 0) {
errno = EBUSY;
return (PX_ERROR);
}
}
iosDevFileAbnormal(&p_pipedev->PIPEDEV_devhdrHdr);
iosDevDelete(&p_pipedev->PIPEDEV_devhdrHdr);
SEL_WAKE_UP_LIST_TERM(&p_pipedev->PIPEDEV_selwulList);
API_SemaphoreBDelete(&p_pipedev->PIPEDEV_hWriteLock);
API_MsgQueueDelete(&p_pipedev->PIPEDEV_hMsgQueue);
__SHEAP_FREE((PVOID)p_pipedev);
return (ERROR_NONE);
}
/*********************************************************************************************************
** 函数名称: API_CanDevRemove
** 功能描述: 移除一个 CAN 设备
** 输 入 :
** pcName 需要移除的 CAN 设备
** bForce 模式选择
** 输 出 : ERROR_NONE or PX_ERROR
** 全局变量:
** 调用模块:
** API 函数
*********************************************************************************************************/
LW_API
INT API_CanDevRemove (PCHAR pcName, BOOL bForce)
{
__PCAN_PORT pDevHdr;
PCHAR pcTail = LW_NULL;
if (LW_CPU_GET_CUR_NESTING()) {
_DebugHandle(__ERRORMESSAGE_LEVEL, "called from ISR.\r\n");
_ErrorHandle(ERROR_KERNEL_IN_ISR);
return (PX_ERROR);
}
if (_G_iCanDrvNum <= 0) {
_DebugHandle(__ERRORMESSAGE_LEVEL, "no driver.\r\n");
_ErrorHandle(ERROR_IO_NO_DRIVER);
return (PX_ERROR);
}
pDevHdr = (__PCAN_PORT)iosDevFind(pcName, &pcTail);
if ((pDevHdr == LW_NULL) || (pcName == pcTail)) {
_DebugHandle(__ERRORMESSAGE_LEVEL, "device not found.\r\n");
_ErrorHandle(ERROR_IOS_DEVICE_NOT_FOUND);
return (PX_ERROR);
}
if (bForce == LW_FALSE) {
if (LW_DEV_GET_USE_COUNT(&pDevHdr->CANPORT_can.CAN_devhdr)) {
_DebugHandle(__ERRORMESSAGE_LEVEL, "too many open files.\r\n");
_ErrorHandle(EBUSY);
return (PX_ERROR);
}
if (SEL_WAKE_UP_LIST_LEN(&pDevHdr->CANPORT_can.CAN_selwulList) > 0) {
errno = EBUSY;
return (PX_ERROR);
}
}
iosDevFileAbnormal(&pDevHdr->CANPORT_can.CAN_devhdr);
iosDevDelete(&pDevHdr->CANPORT_can.CAN_devhdr);
SEL_WAKE_UP_LIST_TERM(&pDevHdr->CANPORT_can.CAN_selwulList);
__canDevDelete(&pDevHdr->CANPORT_can);
__SHEAP_FREE((PVOID)pDevHdr);
return (ERROR_NONE);
}
/*********************************************************************************************************
** 函数名称: API_PipeDevCreate
** 功能描述: 创建一个管道设备
** 输 入 :
** pcName 管道名称
** ulNMessages 管道中消息数量
** stNBytes 每一条消息的最大字节数
** 输 出 : ERROR
** 全局变量:
** 调用模块:
API 函数
*********************************************************************************************************/
LW_API
INT API_PipeDevCreate (PCHAR pcName,
ULONG ulNMessages,
size_t stNBytes)
{
REGISTER PLW_PIPE_DEV p_pipedev;
if (LW_CPU_GET_CUR_NESTING()) {
_DebugHandle(__ERRORMESSAGE_LEVEL, "called from ISR.\r\n");
_ErrorHandle(ERROR_KERNEL_IN_ISR);
return (PX_ERROR);
}
if (_G_iPipeDrvNum <= 0) {
_DebugHandle(__ERRORMESSAGE_LEVEL, "no driver.\r\n");
_ErrorHandle(ERROR_IO_NO_DRIVER);
return (PX_ERROR);
}
p_pipedev = (PLW_PIPE_DEV)__SHEAP_ALLOC(sizeof(LW_PIPE_DEV));
if (p_pipedev == LW_NULL) {
_DebugHandle(__ERRORMESSAGE_LEVEL, "system low memory.\r\n");
_ErrorHandle(ERROR_SYSTEM_LOW_MEMORY);
return (PX_ERROR);
}
lib_bzero(p_pipedev, sizeof(LW_PIPE_DEV));
p_pipedev->PIPEDEV_iAbortFlag = 0;
p_pipedev->PIPEDEV_ulRTimeout = LW_OPTION_WAIT_INFINITE; /* 初始化为永久等待 */
p_pipedev->PIPEDEV_ulWTimeout = LW_OPTION_WAIT_INFINITE; /* 初始化为永久等待 */
p_pipedev->PIPEDEV_hWriteLock = API_SemaphoreBCreate("pipe_wsync",
LW_TRUE,
_G_ulPipeLockOpt | LW_OPTION_OBJECT_GLOBAL,
LW_NULL);
if (!p_pipedev->PIPEDEV_hWriteLock) {
__SHEAP_FREE((PVOID)p_pipedev);
return (PX_ERROR);
}
p_pipedev->PIPEDEV_hMsgQueue = API_MsgQueueCreate("pipe_msg",
ulNMessages, stNBytes,
_G_ulPipeLockOpt | LW_OPTION_OBJECT_GLOBAL,
LW_NULL);
if (!p_pipedev->PIPEDEV_hMsgQueue) {
API_SemaphoreBDelete(&p_pipedev->PIPEDEV_hWriteLock);
__SHEAP_FREE((PVOID)p_pipedev);
return (PX_ERROR);
}
SEL_WAKE_UP_LIST_INIT(&p_pipedev->PIPEDEV_selwulList);
if (iosDevAddEx(&p_pipedev->PIPEDEV_devhdrHdr, pcName, _G_iPipeDrvNum, DT_FIFO) != ERROR_NONE) {
API_SemaphoreBDelete(&p_pipedev->PIPEDEV_hWriteLock);
API_MsgQueueDelete(&p_pipedev->PIPEDEV_hMsgQueue);
SEL_WAKE_UP_LIST_TERM(&p_pipedev->PIPEDEV_selwulList);
__SHEAP_FREE((PVOID)p_pipedev);
_DebugHandle(__ERRORMESSAGE_LEVEL, "no driver.\r\n");
_ErrorHandle(ERROR_SYSTEM_LOW_MEMORY);
return (PX_ERROR);
}
p_pipedev->PIPEDEV_timeCreate = lib_time(LW_NULL);
return (ERROR_NONE);
}
