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https://opencores.org/ocsvn/pcie_ds_dma/pcie_ds_dma/trunk
Subversion Repositories pcie_ds_dma
[/] [pcie_ds_dma/] [trunk/] [soft/] [linux/] [driver/] [pexdrv/] [event.c] - Rev 34
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/*************************************************************************** * Event.c * * Mon Apr 24 11:37:38 2006 * Copyright 2006 User * Email ****************************************************************************/ //////////////////////////////////////////////////////////////////////////////// #include <linux/kernel.h> #define __NO_VERSION__ #include <linux/module.h> #include <linux/types.h> //#include <linux/jiffies.h> #include <linux/delay.h> #include <linux/pci.h> #include <linux/interrupt.h> #include <linux/bitops.h> #include <linux/wait.h> #include <linux/sched.h> //////////////////////////////////////////////////////////////////////////////// #ifndef _EVENT_H_ #include "event.h" #endif //////////////////////////////////////////////////////////////////////////////// // KEVENT *CreateKevent ( void ) { return NULL; } //////////////////////////////////////////////////////////////////////////////// // int InitKevent ( KEVENT * event ) { init_waitqueue_head ( &event->m_wq ); atomic_set ( &event->m_flag, 0 ); event->m_async = NULL; return 0; } //////////////////////////////////////////////////////////////////////////////// // int ResetEvent ( KEVENT * event ) { //printk("<0>%s() %p\n", __FUNCTION__, event); atomic_set ( &event->m_flag, 0 ); return 0; } //////////////////////////////////////////////////////////////////////////////// // int SetEvent ( KEVENT * event ) { atomic_set ( &event->m_flag, 1 ); //for kernel space... wake_up_interruptible( &event->m_wq ); //printk("<0>%s(): %p\n", __FUNCTION__, event); //if (event->m_async) // kill_fasync(&event->m_async, SIGIO, POLL_IN|POLL_OUT); return 0; } //////////////////////////////////////////////////////////////////////////////// // int CheckEventFlag ( KEVENT * event ) { //printk("<0>%s(): %p\n", __FUNCTION__, event); if ( atomic_read ( &event->m_flag ) ) { //ResetEvent ( event ); return 1; } return 0; } //////////////////////////////////////////////////////////////////////////////// #define ms_to_jiffies( ms ) (HZ*ms/1000) #define jiffies_to_ms( jf ) (jf*1000/HZ) //////////////////////////////////////////////////////////////////////////////// // int WaitEvent( KEVENT * event, u32 timeout ) { int status = -1; //printk("<0>%s()\n", __FUNCTION__); #ifdef DZYTOOLS_2_4_X status = interruptible_sleep_on_timeout( &event->m_wq, ms_to_jiffies(timeout) ); #else status = wait_event_interruptible_timeout( event->m_wq, atomic_read(&event->m_flag), ms_to_jiffies(timeout) ); #endif if(!status) { printk("<0>%s(): TIMEOUT\n", __FUNCTION__); return -ETIMEDOUT; } atomic_set ( &event->m_flag, 0 ); return 0; } //////////////////////////////////////////////////////////////////////////////// // int GrabEvent( KEVENT * event, u32 timeout ) { //printk ( "<0>%s(): E %p, T %d\n", __FUNCTION__, event, timeout ); if( CheckEventFlag( event ) ) { ResetEvent(event); return 0; } return WaitEvent(event, timeout); }
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