X-Git-Url: http://git.jankratochvil.net/?p=reactos.git;a=blobdiff_plain;f=drivers%2Fnet%2Fnpf%2Ftime_calls.h;fp=drivers%2Fnet%2Fnpf%2Ftime_calls.h;h=04731cfb6b11340a67d18926fcea3fd558e69c6f;hp=0000000000000000000000000000000000000000;hb=e3ed2d773259cc445c7ff8181ebd934931365328;hpb=d378c68f5a9bb25c9e671dacd482d2e25d211df3

diff --git a/drivers/net/npf/time_calls.h b/drivers/net/npf/time_calls.h
new file mode 100644
index 0000000..04731cf
--- /dev/null
+++ b/drivers/net/npf/time_calls.h
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+/*
+ * Copyright (c) 2001
+ *  Politecnico di Torino.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the Politecnico
+ * di Torino, and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef _time_calls
+#define _time_calls
+
+#ifdef WIN_NT_DRIVER
+
+#include "debug.h"
+
+/*!
+  \brief A microsecond precise timestamp.
+
+  included in the sf_pkthdr or the bpf_hdr that NPF associates with every packet. 
+*/
+
+struct timeval {
+        long    tv_sec;         ///< seconds
+        long    tv_usec;        ///< microseconds
+};
+
+#endif /*WIN_NT_DRIVER*/
+
+struct time_conv {
+    ULONGLONG reference;
+    struct timeval start;
+};
+
+#ifdef __GNUC__
+
+void TIME_DESYNCHRONIZE(struct time_conv *data);
+VOID TIME_SYNCHRONIZE(struct time_conv *data);
+void FORCE_TIME(struct timeval *src, struct time_conv *dest);
+void GET_TIME(struct timeval *dst, struct time_conv *data);
+
+#else /* __GNUC__ */
+
+#ifdef WIN_NT_DRIVER
+
+__inline void TIME_DESYNCHRONIZE(struct time_conv *data)
+{
+    data->reference = 0;
+    data->start.tv_sec = 0;
+    data->start.tv_usec = 0;
+}
+
+#ifdef KQPC_TS
+
+/* KeQueryPerformanceCounter TimeStamps */
+
+__inline VOID TIME_SYNCHRONIZE(struct time_conv *data)
+{
+    struct timeval tmp;
+    LARGE_INTEGER SystemTime;
+    LARGE_INTEGER i;
+    ULONG tmp2;
+    LARGE_INTEGER TimeFreq,PTime;
+
+    if (data->reference!=0)
+        return;
+    
+    // get the absolute value of the system boot time.   
+    PTime=KeQueryPerformanceCounter(&TimeFreq);
+    KeQuerySystemTime(&SystemTime);
+    tmp.tv_sec=(LONG)(SystemTime.QuadPart/10000000-11644473600);
+    tmp.tv_usec=(LONG)((SystemTime.QuadPart%10000000)/10);
+    tmp.tv_sec-=(ULONG)(PTime.QuadPart/TimeFreq.QuadPart);
+    tmp.tv_usec-=(LONG)((PTime.QuadPart%TimeFreq.QuadPart)*1000000/TimeFreq.QuadPart);
+    if (tmp.tv_usec<0) {
+        tmp.tv_sec--;
+        tmp.tv_usec+=1000000;
+    }
+    data->start=tmp;
+    data->reference=1;
+}
+
+__inline void GET_TIME(struct timeval *dst, struct time_conv *data)
+{
+    LARGE_INTEGER PTime, TimeFreq;
+    LONG tmp;
+
+    PTime=KeQueryPerformanceCounter(&TimeFreq);
+    tmp=(LONG)(PTime.QuadPart/TimeFreq.QuadPart);
+    dst->tv_sec=data->start.tv_sec+tmp;
+    dst->tv_usec=data->start.tv_usec+(LONG)((PTime.QuadPart%TimeFreq.QuadPart)*1000000/TimeFreq.QuadPart);
+    if (dst->tv_usec>=1000000) {
+        dst->tv_sec++;
+        dst->tv_usec-=1000000;
+    }
+}
+
+__inline void FORCE_TIME(struct timeval *src, struct time_conv *dest)
+{
+    dest->start=*src;
+}
+
+#else
+
+/*RDTSC timestamps*/
+
+/* callers must be at IRQL=PASSIVE_LEVEL */
+__inline VOID TIME_SYNCHRONIZE(struct time_conv *data)
+{
+    struct timeval tmp;
+    LARGE_INTEGER system_time;
+    ULONGLONG curr_ticks;
+    KIRQL old;
+    LARGE_INTEGER start_kqpc,stop_kqpc,start_freq,stop_freq;
+    ULONGLONG start_ticks,stop_ticks;
+    ULONGLONG delta,delta2;
+    KEVENT event;
+    LARGE_INTEGER i;
+    ULONGLONG reference;
+
+    if (data->reference!=0)
+        return;
+    
+    KeInitializeEvent(&event,NotificationEvent,FALSE);
+    i.QuadPart=-3500000;
+    KeRaiseIrql(HIGH_LEVEL,&old);
+    start_kqpc=KeQueryPerformanceCounter(&start_freq);
+#ifndef __GNUC__
+    __asm
+    {
+        push eax
+        push edx
+        push ecx
+        rdtsc
+        lea ecx, start_ticks
+        mov [ecx+4], edx
+        mov [ecx], eax
+        pop ecx
+        pop edx
+        pop eax
+    }
+#else
+#endif
+    KeLowerIrql(old);
+    KeWaitForSingleObject(&event,UserRequest,KernelMode,TRUE ,&i);
+    KeRaiseIrql(HIGH_LEVEL,&old);
+    stop_kqpc=KeQueryPerformanceCounter(&stop_freq);
+#ifndef __GNUC__
+    __asm
+    {
+        push eax
+        push edx
+        push ecx
+        rdtsc
+        lea ecx, stop_ticks
+        mov [ecx+4], edx
+        mov [ecx], eax
+        pop ecx
+        pop edx
+        pop eax
+    }
+#else
+#endif
+    KeLowerIrql(old);
+    delta=stop_ticks-start_ticks;
+    delta2=stop_kqpc.QuadPart-start_kqpc.QuadPart;
+    if (delta>10000000000) {
+        delta/=16;
+        delta2/=16;
+    }
+    reference=delta*(start_freq.QuadPart)/delta2;
+    data->reference=reference/1000;
+    if (reference%1000>500) 
+        data->reference++;
+    data->reference*=1000;
+    reference=data->reference;
+    KeQuerySystemTime(&system_time);
+#ifndef __GNUC__
+    __asm
+    {
+        push eax
+        push edx
+        push ecx
+        rdtsc
+        lea ecx, curr_ticks
+        mov [ecx+4], edx
+        mov [ecx], eax
+        pop ecx
+        pop edx
+        pop eax
+    }
+#else
+#endif
+    tmp.tv_sec=-(LONG)(curr_ticks/reference);
+    tmp.tv_usec=-(LONG)((curr_ticks%reference)*1000000/reference);
+    system_time.QuadPart-=116444736000000000;
+    tmp.tv_sec+=(LONG)(system_time.QuadPart/10000000);
+    tmp.tv_usec+=(LONG)((system_time.QuadPart%10000000)/10);
+    if (tmp.tv_usec<0) {
+        tmp.tv_sec--;
+        tmp.tv_usec+=1000000;
+    }
+    data->start=tmp;
+    IF_LOUD(DbgPrint("Frequency %I64u MHz\n",data->reference);)
+}
+
+__inline void FORCE_TIME(struct timeval *src, struct time_conv *dest)
+{
+    dest->start=*src;
+}
+
+__inline void GET_TIME(struct timeval *dst, struct time_conv *data)
+{
+    ULONGLONG tmp;
+#ifndef __GNUC__
+    __asm
+    {
+        push eax
+        push edx
+        push ecx
+        rdtsc
+        lea ecx, tmp
+        mov [ecx+4], edx
+        mov [ecx], eax
+        pop ecx
+        pop edx
+        pop eax
+    }
+#else
+#endif
+    if (data->reference==0) {
+        return;
+    }
+    dst->tv_sec=(LONG)(tmp/data->reference);
+    dst->tv_usec=(LONG)((tmp-dst->tv_sec*data->reference)*1000000/data->reference);
+    dst->tv_sec+=data->start.tv_sec;
+    dst->tv_usec+=data->start.tv_usec;
+    if (dst->tv_usec>=1000000) {
+        dst->tv_sec++;
+        dst->tv_usec-=1000000;
+    }
+}
+
+#endif /*KQPC_TS*/
+
+#endif /*WIN_NT_DRIVER*/
+
+#endif /* __GNUC__ */
+
+#endif /*_time_calls*/