target/linux/generic-2.6/files/crypto/ocf/kirkwood/mvHal/dbg-trace.c

   1 #include <linux/kernel.h>
   2 #include <linux/slab.h>
   3 #include <linux/time.h>
   4 #include "dbg-trace.h"
   5
   6 #define TRACE_ARR_LEN   800
   7 #define STR_LEN         128
   8 struct trace {
   9     struct timeval tv;
  10         char str[STR_LEN];
  11     unsigned int callback_val1;
  12     unsigned int callback_val2;
  13         char valid;
  14 };
  15 static unsigned int (*trc_callback1) (unsigned char) = NULL;
  16 static unsigned int (*trc_callback2) (unsigned char) = NULL;
  17 static unsigned char trc_param1 = 0;
  18 static unsigned char trc_param2 = 0;
  19 struct trace *trc_arr;
  20 static int trc_index;
  21 static int trc_active = 0;
  22
  23 void TRC_START()
  24 {
  25     trc_active = 1;
  26 }
  27
  28 void TRC_STOP()
  29 {
  30     trc_active = 0;
  31 }
  32
  33 void TRC_INIT(void *callback1, void *callback2, unsigned char callback1_param, unsigned char callback2_param)
  34 {
  35     printk("Marvell debug tracing is on\n");
  36         trc_arr = (struct trace *)kmalloc(TRACE_ARR_LEN*sizeof(struct trace),GFP_KERNEL);
  37     if(trc_arr == NULL)
  38     {
  39         printk("Can't allocate Debug Trace buffer\n");
  40         return;
  41     }
  42         memset(trc_arr,0,TRACE_ARR_LEN*sizeof(struct trace));
  43         trc_index = 0;
  44     trc_callback1 = callback1;
  45     trc_callback2 = callback2;
  46     trc_param1 = callback1_param;
  47     trc_param2 = callback2_param;
  48 }
  49 void TRC_REC(char *fmt,...)
  50 {
  51     va_list args;
  52         struct trace *trc = &trc_arr[trc_index];
  53
  54     if(trc_active == 0)
  55         return;
  56
  57     do_gettimeofday(&trc->tv);
  58     if(trc_callback1)
  59         trc->callback_val1 = trc_callback1(trc_param1);
  60     if(trc_callback2)
  61         trc->callback_val2 = trc_callback2(trc_param2);
  62     va_start(args, fmt);
  63     vsprintf(trc->str,fmt,args);
  64     va_end(args);
  65         trc->valid = 1;
  66         if((++trc_index) == TRACE_ARR_LEN) {
  67                 trc_index = 0;
  68     }
  69 }
  70 void TRC_OUTPUT(void)
  71 {
  72         int i,j;
  73         struct trace *p;
  74         printk("\n\nTrace %d items\n",TRACE_ARR_LEN);
  75         for(i=0,j=trc_index; i<TRACE_ARR_LEN; i++,j++) {
  76                 if(j == TRACE_ARR_LEN)
  77                         j = 0;
  78                 p = &trc_arr[j];
  79                 if(p->valid) {
  80             unsigned long uoffs;
  81             struct trace *plast;
  82             if(p == &trc_arr[0])
  83                 plast = &trc_arr[TRACE_ARR_LEN-1];
  84             else
  85                 plast = p-1;
  86             if(p->tv.tv_sec == ((plast)->tv.tv_sec))
  87                 uoffs = (p->tv.tv_usec - ((plast)->tv.tv_usec));
  88             else
  89                 uoffs = (1000000 - ((plast)->tv.tv_usec)) +
  90                     ((p->tv.tv_sec - ((plast)->tv.tv_sec) - 1) * 1000000) +
  91                     p->tv.tv_usec;
  92                         printk("%03d: [+%ld usec]", j, (unsigned long)uoffs);
  93             if(trc_callback1)
  94                 printk("[%u]",p->callback_val1);
  95             if(trc_callback2)
  96                 printk("[%u]",p->callback_val2);
  97             printk(": %s",p->str);
  98         }
  99                 p->valid = 0;
 100         }
 101         memset(trc_arr,0,TRACE_ARR_LEN*sizeof(struct trace));
 102         trc_index = 0;
 103 }
 104 void TRC_RELEASE(void)
 105 {
 106         kfree(trc_arr);
 107         trc_index = 0;
 108 }
 109
 110