Staging: remove epl driver

This is no longer maintained upstream, and no one cares about it at all,
so delete it.

The fact that it is duplicating an existing network driver also is a
good reason to remove it, it's causing nothing but trouble right now.

Cc: Daniel Krueger <daniel.krueger@systec-electronic.com>
Cc: Ronald Sieber <Ronald.Sieber@systec-electronic.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 510 deletions

diff --git a/drivers/staging/epl/TimerHighReskX86.c b/drivers/staging/epl/TimerHighReskX86.c
deleted file mode 100644
index d6897de4f14..00000000000
--- a/drivers/staging/epl/TimerHighReskX86.c
+++ /dev/null
@@ -1,510 +0,0 @@
-/****************************************************************************
-
-  (c) SYSTEC electronic GmbH, D-07973 Greiz, August-Bebel-Str. 29
-      www.systec-electronic.com
-
-  Project:      openPOWERLINK
-
-  Description:  target specific implementation of
-                high resolution timer module for X86 under Linux
-                The Linux kernel has to be compiled with high resolution
-                timers enabled. This is done by configuring the kernel
-                with CONFIG_HIGH_RES_TIMERS enabled.
-
-  License:
-
-    Redistribution and use in source and binary forms, with or without
-    modification, are permitted provided that the following conditions
-    are met:
-
-    1. Redistributions of source code must retain the above copyright
-       notice, this list of conditions and the following disclaimer.
-
-    2. Redistributions in binary form must reproduce the above copyright
-       notice, this list of conditions and the following disclaimer in the
-       documentation and/or other materials provided with the distribution.
-
-    3. Neither the name of SYSTEC electronic GmbH nor the names of its
-       contributors may be used to endorse or promote products derived
-       from this software without prior written permission. For written
-       permission, please contact info@systec-electronic.com.
-
-    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-    COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-    BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-    ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-    POSSIBILITY OF SUCH DAMAGE.
-
-    Severability Clause:
-
-        If a provision of this License is or becomes illegal, invalid or
-        unenforceable in any jurisdiction, that shall not affect:
-        1. the validity or enforceability in that jurisdiction of any other
-           provision of this License; or
-        2. the validity or enforceability in other jurisdictions of that or
-           any other provision of this License.
-
-  -------------------------------------------------------------------------
-
-                $RCSfile: TimerHighReskX86.c,v $
-
-                $Author: D.Krueger $
-
-                $Revision: 1.4 $  $Date: 2008/04/17 21:38:01 $
-
-                $State: Exp $
-
-                Build Environment:
-                    GNU
-
-  -------------------------------------------------------------------------
-
-  Revision History:
-
-****************************************************************************/
-
-#include "EplInc.h"
-#include "kernel/EplTimerHighResk.h"
-#include "Benchmark.h"
-
-//#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/hrtimer.h>
-
-/***************************************************************************/
-/*                                                                         */
-/*                                                                         */
-/*          G L O B A L   D E F I N I T I O N S                            */
-/*                                                                         */
-/*                                                                         */
-/***************************************************************************/
-
-//---------------------------------------------------------------------------
-// const defines
-//---------------------------------------------------------------------------
-
-#define TIMER_COUNT           2	/* max 15 timers selectable */
-#define TIMER_MIN_VAL_SINGLE  5000	/* min 5us */
-#define TIMER_MIN_VAL_CYCLE   100000	/* min 100us */
-
-#define PROVE_OVERRUN
-
-// TracePoint support for realtime-debugging
-#ifdef _DBG_TRACE_POINTS_
-void TgtDbgSignalTracePoint(u8 bTracePointNumber_p);
-void TgtDbgPostTraceValue(u32 dwTraceValue_p);
-#define TGT_DBG_SIGNAL_TRACE_POINT(p)   TgtDbgSignalTracePoint(p)
-#define TGT_DBG_POST_TRACE_VALUE(v)     TgtDbgPostTraceValue(v)
-#else
-#define TGT_DBG_SIGNAL_TRACE_POINT(p)
-#define TGT_DBG_POST_TRACE_VALUE(v)
-#endif
-#define HRT_DBG_POST_TRACE_VALUE(Event_p, uiNodeId_p, wErrorCode_p) \
-    TGT_DBG_POST_TRACE_VALUE((0xE << 28) | (Event_p << 24) \
-                             | (uiNodeId_p << 16) | wErrorCode_p)
-
-#define TIMERHDL_MASK         0x0FFFFFFF
-#define TIMERHDL_SHIFT        28
-#define HDL_TO_IDX(Hdl)       ((Hdl >> TIMERHDL_SHIFT) - 1)
-#define HDL_INIT(Idx)         ((Idx + 1) << TIMERHDL_SHIFT)
-#define HDL_INC(Hdl)          (((Hdl + 1) & TIMERHDL_MASK) \
-                               | (Hdl & ~TIMERHDL_MASK))
-
-//---------------------------------------------------------------------------
-// modul global types
-//---------------------------------------------------------------------------
-
-typedef struct {
-	tEplTimerEventArg m_EventArg;
-	tEplTimerkCallback m_pfnCallback;
-	struct hrtimer m_Timer;
-	BOOL m_fContinuously;
-	unsigned long long m_ullPeriod;
-
-} tEplTimerHighReskTimerInfo;
-
-typedef struct {
-	tEplTimerHighReskTimerInfo m_aTimerInfo[TIMER_COUNT];
-
-} tEplTimerHighReskInstance;
-
-//---------------------------------------------------------------------------
-// local vars
-//---------------------------------------------------------------------------
-
-static tEplTimerHighReskInstance EplTimerHighReskInstance_l;
-
-//---------------------------------------------------------------------------
-// local function prototypes
-//---------------------------------------------------------------------------
-
-enum hrtimer_restart EplTimerHighReskCallback(struct hrtimer *pTimer_p);
-
-//=========================================================================//
-//                                                                         //
-//          P U B L I C   F U N C T I O N S                                //
-//                                                                         //
-//=========================================================================//
-
-//---------------------------------------------------------------------------
-//
-// Function:    EplTimerHighReskInit()
-//
-// Description: initializes the high resolution timer module.
-//
-// Parameters:  void
-//
-// Return:      tEplKernel      = error code
-//
-// State:       not tested
-//
-//---------------------------------------------------------------------------
-
-tEplKernel EplTimerHighReskInit(void)
-{
-	tEplKernel Ret;
-
-	Ret = EplTimerHighReskAddInstance();
-
-	return Ret;
-
-}
-
-//---------------------------------------------------------------------------
-//
-// Function:    EplTimerHighReskAddInstance()
-//
-// Description: initializes the high resolution timer module.
-//
-// Parameters:  void
-//
-// Return:      tEplKernel      = error code
-//
-// State:       not tested
-//
-//---------------------------------------------------------------------------
-
-tEplKernel EplTimerHighReskAddInstance(void)
-{
-	tEplKernel Ret;
-	unsigned int uiIndex;
-
-	Ret = kEplSuccessful;
-
-	EPL_MEMSET(&EplTimerHighReskInstance_l, 0,
-		   sizeof(EplTimerHighReskInstance_l));
-
-	/*
-	 * Initialize hrtimer structures for all usable timers.
-	 */
-	for (uiIndex = 0; uiIndex < TIMER_COUNT; uiIndex++) {
-		tEplTimerHighReskTimerInfo *pTimerInfo;
-		struct hrtimer *pTimer;
-
-		pTimerInfo = &EplTimerHighReskInstance_l.m_aTimerInfo[uiIndex];
-		pTimer = &pTimerInfo->m_Timer;
-		hrtimer_init(pTimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
-
-		pTimer->function = EplTimerHighReskCallback;
-	}
-
-	return Ret;
-}
-
-//---------------------------------------------------------------------------
-//
-// Function:    EplTimerHighReskDelInstance()
-//
-// Description: shuts down the high resolution timer module.
-//
-// Parameters:  void
-//
-// Return:      tEplKernel      = error code
-//
-// State:       not tested
-//
-//---------------------------------------------------------------------------
-
-tEplKernel EplTimerHighReskDelInstance(void)
-{
-	tEplTimerHighReskTimerInfo *pTimerInfo;
-	tEplKernel Ret;
-	unsigned int uiIndex;
-
-	Ret = kEplSuccessful;
-
-	for (uiIndex = 0; uiIndex < TIMER_COUNT; uiIndex++) {
-		pTimerInfo = &EplTimerHighReskInstance_l.m_aTimerInfo[0];
-		pTimerInfo->m_pfnCallback = NULL;
-		pTimerInfo->m_EventArg.m_TimerHdl = 0;
-		/*
-		 * In this case we can not just try to cancel the timer.
-		 * We actually have to wait until its callback function
-		 * has returned.
-		 */
-		hrtimer_cancel(&pTimerInfo->m_Timer);
-	}
-
-	return Ret;
-
-}
-
-//---------------------------------------------------------------------------
-//
-// Function:    EplTimerHighReskModifyTimerNs()
-//
-// Description: modifies the timeout of the timer with the specified handle.
-//              If the handle the pointer points to is zero, the timer must
-//              be created first.
-//              If it is not possible to stop the old timer,
-//              this function always assures that the old timer does not
-//              trigger the callback function with the same handle as the new
-//              timer. That means the callback function must check the passed
-//              handle with the one returned by this function. If these are
-//              unequal, the call can be discarded.
-//
-// Parameters:  pTimerHdl_p     = pointer to timer handle
-//              ullTimeNs_p     = relative timeout in [ns]
-//              pfnCallback_p   = callback function, which is called mutual
-//                                exclusive with the Edrv callback functions
-//                                (Rx and Tx).
-//              ulArgument_p    = user-specific argument
-//              fContinuously_p = if TRUE, callback function will be called
-//                                continuously;
-//                                otherwise, it is a oneshot timer.
-//
-// Return:      tEplKernel      = error code
-//
-// State:       not tested
-//
-//---------------------------------------------------------------------------
-
-tEplKernel EplTimerHighReskModifyTimerNs(tEplTimerHdl *pTimerHdl_p,
-					 unsigned long long ullTimeNs_p,
-					 tEplTimerkCallback pfnCallback_p,
-					 unsigned long ulArgument_p,
-					 BOOL fContinuously_p)
-{
-	tEplKernel Ret;
-	unsigned int uiIndex;
-	tEplTimerHighReskTimerInfo *pTimerInfo;
-	ktime_t RelTime;
-
-	Ret = kEplSuccessful;
-
-	// check pointer to handle
-	if (pTimerHdl_p == NULL) {
-		Ret = kEplTimerInvalidHandle;
-		goto Exit;
-	}
-
-	if (*pTimerHdl_p == 0) {	// no timer created yet
-
-		// search free timer info structure
-		pTimerInfo = &EplTimerHighReskInstance_l.m_aTimerInfo[0];
-		for (uiIndex = 0; uiIndex < TIMER_COUNT;
-		     uiIndex++, pTimerInfo++) {
-			if (pTimerInfo->m_EventArg.m_TimerHdl == 0) {	// free structure found
-				break;
-			}
-		}
-		if (uiIndex >= TIMER_COUNT) {	// no free structure found
-			Ret = kEplTimerNoTimerCreated;
-			goto Exit;
-		}
-
-		pTimerInfo->m_EventArg.m_TimerHdl = HDL_INIT(uiIndex);
-	} else {
-		uiIndex = HDL_TO_IDX(*pTimerHdl_p);
-		if (uiIndex >= TIMER_COUNT) {	// invalid handle
-			Ret = kEplTimerInvalidHandle;
-			goto Exit;
-		}
-
-		pTimerInfo = &EplTimerHighReskInstance_l.m_aTimerInfo[uiIndex];
-	}
-
-	/*
-	 * increment timer handle
-	 * (if timer expires right after this statement, the user
-	 * would detect an unknown timer handle and discard it)
-	 */
-	pTimerInfo->m_EventArg.m_TimerHdl =
-	    HDL_INC(pTimerInfo->m_EventArg.m_TimerHdl);
-	*pTimerHdl_p = pTimerInfo->m_EventArg.m_TimerHdl;
-
-	// reject too small time values
-	if ((fContinuously_p && (ullTimeNs_p < TIMER_MIN_VAL_CYCLE))
-	    || (!fContinuously_p && (ullTimeNs_p < TIMER_MIN_VAL_SINGLE))) {
-		Ret = kEplTimerNoTimerCreated;
-		goto Exit;
-	}
-
-	pTimerInfo->m_EventArg.m_ulArg = ulArgument_p;
-	pTimerInfo->m_pfnCallback = pfnCallback_p;
-	pTimerInfo->m_fContinuously = fContinuously_p;
-	pTimerInfo->m_ullPeriod = ullTimeNs_p;
-
-	/*
-	 * HRTIMER_MODE_REL does not influence general handling of this timer.
-	 * It only sets relative mode for this start operation.
-	 * -> Expire time is calculated by: Now + RelTime
-	 * hrtimer_start also skips pending timer events.
-	 * The state HRTIMER_STATE_CALLBACK is ignored.
-	 * We have to cope with that in our callback function.
-	 */
-	RelTime = ktime_add_ns(ktime_set(0, 0), ullTimeNs_p);
-	hrtimer_start(&pTimerInfo->m_Timer, RelTime, HRTIMER_MODE_REL);
-
-      Exit:
-	return Ret;
-
-}
-
-//---------------------------------------------------------------------------
-//
-// Function:    EplTimerHighReskDeleteTimer()
-//
-// Description: deletes the timer with the specified handle. Afterward the
-//              handle is set to zero.
-//
-// Parameters:  pTimerHdl_p     = pointer to timer handle
-//
-// Return:      tEplKernel      = error code
-//
-// State:       not tested
-//
-//---------------------------------------------------------------------------
-
-tEplKernel EplTimerHighReskDeleteTimer(tEplTimerHdl *pTimerHdl_p)
-{
-	tEplKernel Ret = kEplSuccessful;
-	unsigned int uiIndex;
-	tEplTimerHighReskTimerInfo *pTimerInfo;
-
-	// check pointer to handle
-	if (pTimerHdl_p == NULL) {
-		Ret = kEplTimerInvalidHandle;
-		goto Exit;
-	}
-
-	if (*pTimerHdl_p == 0) {	// no timer created yet
-		goto Exit;
-	} else {
-		uiIndex = HDL_TO_IDX(*pTimerHdl_p);
-		if (uiIndex >= TIMER_COUNT) {	// invalid handle
-			Ret = kEplTimerInvalidHandle;
-			goto Exit;
-		}
-		pTimerInfo = &EplTimerHighReskInstance_l.m_aTimerInfo[uiIndex];
-		if (pTimerInfo->m_EventArg.m_TimerHdl != *pTimerHdl_p) {	// invalid handle
-			goto Exit;
-		}
-	}
-
-	*pTimerHdl_p = 0;
-	pTimerInfo->m_EventArg.m_TimerHdl = 0;
-	pTimerInfo->m_pfnCallback = NULL;
-
-	/*
-	 * Three return cases of hrtimer_try_to_cancel have to be tracked:
-	 *  1 - timer has been removed
-	 *  0 - timer was not active
-	 *      We need not do anything. hrtimer timers just consist of
-	 *      a hrtimer struct, which we might enqueue in the hrtimers
-	 *      event list by calling hrtimer_start().
-	 *      If a timer is not enqueued, it is not present in hrtimers.
-	 * -1 - callback function is running
-	 *      In this case we have to ensure that the timer is not
-	 *      continuously restarted. This has been done by clearing
-	 *      its handle.
-	 */
-	hrtimer_try_to_cancel(&pTimerInfo->m_Timer);
-
-      Exit:
-	return Ret;
-
-}
-
-//---------------------------------------------------------------------------
-//
-// Function:    EplTimerHighReskCallback()
-//
-// Description: Callback function commonly used for all timers.
-//
-// Parameters:  pTimer_p = pointer to hrtimer
-//
-// Return:
-//
-// State:       not tested
-//
-//---------------------------------------------------------------------------
-
-enum hrtimer_restart EplTimerHighReskCallback(struct hrtimer *pTimer_p)
-{
-	unsigned int uiIndex;
-	tEplTimerHighReskTimerInfo *pTimerInfo;
-	tEplTimerHdl OrgTimerHdl;
-	enum hrtimer_restart Ret;
-
-	BENCHMARK_MOD_24_SET(4);
-
-	Ret = HRTIMER_NORESTART;
-	pTimerInfo =
-	    container_of(pTimer_p, tEplTimerHighReskTimerInfo, m_Timer);
-	uiIndex = HDL_TO_IDX(pTimerInfo->m_EventArg.m_TimerHdl);
-	if (uiIndex >= TIMER_COUNT) {	// invalid handle
-		goto Exit;
-	}
-
-	/*
-	 * We store the timer handle before calling the callback function
-	 * as the timer can be modified inside it.
-	 */
-	OrgTimerHdl = pTimerInfo->m_EventArg.m_TimerHdl;
-
-	if (pTimerInfo->m_pfnCallback != NULL) {
-		pTimerInfo->m_pfnCallback(&pTimerInfo->m_EventArg);
-	}
-
-	if (pTimerInfo->m_fContinuously) {
-		ktime_t Interval;
-#ifdef PROVE_OVERRUN
-		ktime_t Now;
-		unsigned long Overruns;
-#endif
-
-		if (OrgTimerHdl != pTimerInfo->m_EventArg.m_TimerHdl) {
-			/* modified timer has already been restarted */
-			goto Exit;
-		}
-#ifdef PROVE_OVERRUN
-		Now = ktime_get();
-		Interval =
-		    ktime_add_ns(ktime_set(0, 0), pTimerInfo->m_ullPeriod);
-		Overruns = hrtimer_forward(pTimer_p, Now, Interval);
-		if (Overruns > 1) {
-			printk
-			    ("EplTimerHighResk: Continuous timer (handle 0x%lX) had to skip %lu interval(s)!\n",
-			     pTimerInfo->m_EventArg.m_TimerHdl, Overruns - 1);
-		}
-#else
-		pTimer_p->expires = ktime_add_ns(pTimer_p->expires,
-						 pTimerInfo->m_ullPeriod);
-#endif
-
-		Ret = HRTIMER_RESTART;
-	}
-
-      Exit:
-	BENCHMARK_MOD_24_RESET(4);
-	return Ret;
-}