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Diffstat (limited to 'drivers/staging/epl/proc_fs.c')
| -rw-r--r-- | drivers/staging/epl/proc_fs.c | 409 |
1 files changed, 409 insertions, 0 deletions
diff --git a/drivers/staging/epl/proc_fs.c b/drivers/staging/epl/proc_fs.c new file mode 100644 index 000000000000..f4910332d3c6 --- /dev/null +++ b/drivers/staging/epl/proc_fs.c @@ -0,0 +1,409 @@ +/**************************************************************************** + + (c) SYSTEC electronic GmbH, D-07973 Greiz, August-Bebel-Str. 29 + www.systec-electronic.com + + Project: openPOWERLINK + + Description: proc fs entry with diagnostic information under Linux + + 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: proc_fs.c,v $ + + $Author: D.Krueger $ + + $Revision: 1.13 $ $Date: 2008/11/07 13:55:56 $ + + $State: Exp $ + + Build Environment: + GNU + + ------------------------------------------------------------------------- + + Revision History: + + 2006/07/31 d.k.: start of implementation + +****************************************************************************/ + +#include "kernel/EplNmtk.h" +#include "user/EplNmtu.h" + +#if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0) +#include "user/EplNmtMnu.h" +#endif + +#include "kernel/EplDllkCal.h" + +//#include <linux/config.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/major.h> +#include <linux/version.h> +#include <asm/io.h> +#include <asm/uaccess.h> +#include <asm/atomic.h> +#include <linux/proc_fs.h> +#include <linux/spinlock.h> + +#ifdef CONFIG_COLDFIRE +#include <asm/coldfire.h> +#include "fec.h" +#endif + +/***************************************************************************/ +/* */ +/* */ +/* G L O B A L D E F I N I T I O N S */ +/* */ +/* */ +/***************************************************************************/ + +//--------------------------------------------------------------------------- +// const defines +//--------------------------------------------------------------------------- + +#ifndef EPL_PROC_DEV_NAME +#define EPL_PROC_DEV_NAME "epl" +#endif + +#ifndef DBG_TRACE_POINTS +#define DBG_TRACE_POINTS 23 // # of supported debug trace points +#endif + +#ifndef DBG_TRACE_VALUES +#define DBG_TRACE_VALUES 24 // # of supported debug trace values (size of circular buffer) +#endif + +//--------------------------------------------------------------------------- +// modul global types +//--------------------------------------------------------------------------- + +//--------------------------------------------------------------------------- +// local vars +//--------------------------------------------------------------------------- + +#ifdef _DBG_TRACE_POINTS_ +atomic_t aatmDbgTracePoint_l[DBG_TRACE_POINTS]; +DWORD adwDbgTraceValue_l[DBG_TRACE_VALUES]; +DWORD dwDbgTraceValueOld_l; +unsigned int uiDbgTraceValuePos_l; +spinlock_t spinlockDbgTraceValue_l; +unsigned long ulDbTraceValueFlags_l; +#endif + +//--------------------------------------------------------------------------- +// local function prototypes +//--------------------------------------------------------------------------- + +static int EplLinProcRead(char *pcBuffer_p, char **ppcStart_p, off_t Offset_p, + int nBufferSize_p, int *pEof_p, void *pData_p); +static int EplLinProcWrite(struct file *file, const char __user * buffer, + unsigned long count, void *data); + +void PUBLIC TgtDbgSignalTracePoint(BYTE bTracePointNumber_p); +void PUBLIC TgtDbgPostTraceValue(DWORD dwTraceValue_p); + +EPLDLLEXPORT DWORD PUBLIC EplIdentuGetRunningRequests(void); + +//=========================================================================// +// // +// P U B L I C F U N C T I O N S // +// // +//=========================================================================// + +tEplKernel EplLinProcInit(void) +{ + struct proc_dir_entry *pProcDirEntry; + pProcDirEntry = create_proc_entry(EPL_PROC_DEV_NAME, S_IRUGO, NULL); + if (pProcDirEntry != NULL) { + pProcDirEntry->read_proc = EplLinProcRead; + pProcDirEntry->write_proc = EplLinProcWrite; + pProcDirEntry->data = NULL; // device number or something else + + } else { + return kEplNoResource; + } + +#ifdef _DBG_TRACE_POINTS_ + // initialize spinlock and circular buffer position + spin_lock_init(&spinlockDbgTraceValue_l); + uiDbgTraceValuePos_l = 0; + dwDbgTraceValueOld_l = 0; +#endif + + return kEplSuccessful; +} + +tEplKernel EplLinProcFree(void) +{ + remove_proc_entry(EPL_PROC_DEV_NAME, NULL); + + return kEplSuccessful; +} + +//--------------------------------------------------------------------------- +// Target specific event signaling (FEC Tx-/Rx-Interrupt, used by Edrv) +//--------------------------------------------------------------------------- + +#ifdef _DBG_TRACE_POINTS_ +void PUBLIC TgtDbgSignalTracePoint(BYTE bTracePointNumber_p) +{ + + if (bTracePointNumber_p >= + (sizeof(aatmDbgTracePoint_l) / sizeof(aatmDbgTracePoint_l[0]))) { + goto Exit; + } + + atomic_inc(&aatmDbgTracePoint_l[bTracePointNumber_p]); + + Exit: + + return; + +} + +void PUBLIC TgtDbgPostTraceValue(DWORD dwTraceValue_p) +{ + + spin_lock_irqsave(&spinlockDbgTraceValue_l, ulDbTraceValueFlags_l); + if (dwDbgTraceValueOld_l != dwTraceValue_p) { + adwDbgTraceValue_l[uiDbgTraceValuePos_l] = dwTraceValue_p; + uiDbgTraceValuePos_l = + (uiDbgTraceValuePos_l + 1) % DBG_TRACE_VALUES; + dwDbgTraceValueOld_l = dwTraceValue_p; + } + spin_unlock_irqrestore(&spinlockDbgTraceValue_l, ulDbTraceValueFlags_l); + + return; + +} +#endif + +//--------------------------------------------------------------------------- +// Read function for PROC-FS read access +//--------------------------------------------------------------------------- + +static int EplLinProcRead(char *pcBuffer_p, + char **ppcStart_p, + off_t Offset_p, + int nBufferSize_p, int *pEof_p, void *pData_p) +{ + + int nSize; + int Eof; + tEplDllkCalStatistics *pDllkCalStats; + + nSize = 0; + Eof = 0; + + // count calls of this function +#ifdef _DBG_TRACE_POINTS_ + TgtDbgSignalTracePoint(0); +#endif + + //--------------------------------------------------------------- + // generate static information + //--------------------------------------------------------------- + + // ---- Driver information ---- + nSize += snprintf(pcBuffer_p + nSize, nBufferSize_p - nSize, + "%s %s (c) 2006 %s\n", + EPL_PRODUCT_NAME, EPL_PRODUCT_VERSION, + EPL_PRODUCT_MANUFACTURER); + + //--------------------------------------------------------------- + // generate process information + //--------------------------------------------------------------- + + // ---- EPL state ---- + nSize += snprintf(pcBuffer_p + nSize, nBufferSize_p - nSize, + "NMT state: 0x%04X\n", + (WORD) EplNmtkGetNmtState()); + + EplDllkCalGetStatistics(&pDllkCalStats); + + nSize += snprintf(pcBuffer_p + nSize, nBufferSize_p - nSize, + "CurAsyncTxGen=%lu CurAsyncTxNmt=%lu CurAsyncRx=%lu\nMaxAsyncTxGen=%lu MaxAsyncTxNmt=%lu MaxAsyncRx=%lu\n", + pDllkCalStats->m_ulCurTxFrameCountGen, + pDllkCalStats->m_ulCurTxFrameCountNmt, + pDllkCalStats->m_ulCurRxFrameCount, + pDllkCalStats->m_ulMaxTxFrameCountGen, + pDllkCalStats->m_ulMaxTxFrameCountNmt, + pDllkCalStats->m_ulMaxRxFrameCount); + +#if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0) + // fetch running IdentRequests + nSize += snprintf(pcBuffer_p + nSize, nBufferSize_p - nSize, + "running IdentRequests: 0x%08lX\n", + EplIdentuGetRunningRequests()); + + // fetch state of NmtMnu module + { + unsigned int uiMandatorySlaveCount; + unsigned int uiSignalSlaveCount; + WORD wFlags; + + EplNmtMnuGetDiagnosticInfo(&uiMandatorySlaveCount, + &uiSignalSlaveCount, &wFlags); + + nSize += snprintf(pcBuffer_p + nSize, nBufferSize_p - nSize, + "MN MandSlaveCount: %u SigSlaveCount: %u Flags: 0x%X\n", + uiMandatorySlaveCount, uiSignalSlaveCount, + wFlags); + + } +#endif + + // ---- FEC state ---- +#ifdef CONFIG_COLDFIRE + { + // Receive the base address + unsigned long base_addr; +#if (EDRV_USED_ETH_CTRL == 0) + // Set the base address of FEC0 + base_addr = FEC_BASE_ADDR_FEC0; +#else + // Set the base address of FEC1 + base_addr = FEC_BASE_ADDR_FEC1; +#endif + + nSize += snprintf(pcBuffer_p + nSize, nBufferSize_p - nSize, + "FEC_ECR = 0x%08X FEC_EIR = 0x%08X FEC_EIMR = 0x%08X\nFEC_TCR = 0x%08X FECTFSR = 0x%08X FECRFSR = 0x%08X\n", + FEC_ECR(base_addr), FEC_EIR(base_addr), + FEC_EIMR(base_addr), FEC_TCR(base_addr), + FEC_FECTFSR(base_addr), + FEC_FECRFSR(base_addr)); + } +#endif + + // ---- DBG: TracePoints ---- +#ifdef _DBG_TRACE_POINTS_ + { + int nNum; + + nSize += snprintf(pcBuffer_p + nSize, nBufferSize_p - nSize, + "DbgTracePoints:\n"); + for (nNum = 0; + nNum < (sizeof(aatmDbgTracePoint_l) / sizeof(atomic_t)); + nNum++) { + nSize += + snprintf(pcBuffer_p + nSize, nBufferSize_p - nSize, + " TracePoint[%2d]: %d\n", (int)nNum, + atomic_read(&aatmDbgTracePoint_l[nNum])); + } + + nSize += snprintf(pcBuffer_p + nSize, nBufferSize_p - nSize, + "DbgTraceValues:\n"); + for (nNum = 0; nNum < DBG_TRACE_VALUES; nNum++) { + if (nNum == uiDbgTraceValuePos_l) { // next value will be stored at that position + nSize += + snprintf(pcBuffer_p + nSize, + nBufferSize_p - nSize, "*%08lX", + adwDbgTraceValue_l[nNum]); + } else { + nSize += + snprintf(pcBuffer_p + nSize, + nBufferSize_p - nSize, " %08lX", + adwDbgTraceValue_l[nNum]); + } + if ((nNum & 0x00000007) == 0x00000007) { // 8 values printed -> end of line reached + nSize += + snprintf(pcBuffer_p + nSize, + nBufferSize_p - nSize, "\n"); + } + } + if ((nNum & 0x00000007) != 0x00000007) { // number of values printed is not a multiple of 8 -> print new line + nSize += + snprintf(pcBuffer_p + nSize, nBufferSize_p - nSize, + "\n"); + } + } +#endif + + Eof = 1; + goto Exit; + + Exit: + + *pEof_p = Eof; + + return (nSize); + +} + +//--------------------------------------------------------------------------- +// Write function for PROC-FS write access +//--------------------------------------------------------------------------- + +static int EplLinProcWrite(struct file *file, const char __user * buffer, + unsigned long count, void *data) +{ + char abBuffer[count + 1]; + int iErr; + int iVal = 0; + tEplNmtEvent NmtEvent; + + if (count > 0) { + iErr = copy_from_user(abBuffer, buffer, count); + if (iErr != 0) { + return count; + } + abBuffer[count] = '\0'; + + iErr = sscanf(abBuffer, "%i", &iVal); + } + if ((iVal <= 0) || (iVal > 0x2F)) { + NmtEvent = kEplNmtEventSwReset; + } else { + NmtEvent = (tEplNmtEvent) iVal; + } + // execute specified NMT command on write access of /proc/epl + EplNmtuNmtEvent(NmtEvent); + + return count; +} |