static int proc_write_perf(struct file *file, const char *buffer,
unsigned long count, void *data)
{
int len;
int nparsed;
int index;
char mybuf[TXTBUFSZ];
int which[4];
unsigned long control[4];
long long ctrdata[4];
if(count >= TXTBUFSZ) len = TXTBUFSZ-1;
else len = count;
memset(mybuf,0,TXTBUFSZ);
if(copy_from_user(mybuf, buffer, len)) return -EFAULT;
nparsed = sscanf(mybuf,
"%d %lx %Ld %d %lx %Ld %d %lx %Ld %d %lx %Ld",
&which[0], &control[0], &ctrdata[0],
&which[1], &control[1], &ctrdata[1],
&which[2], &control[2], &ctrdata[2],
&which[3], &control[3], &ctrdata[3]);
for(index = 0; nparsed >= 3; index++) {
switch (which[index]) {
case 0:
write_c0_perfctrl0(control[index]);
if(ctrdata[index] != -1) {
extencount[0] = (unsigned long long)ctrdata[index];
write_c0_perfcntr0((unsigned long)0);
}
break;
case 1:
write_c0_perfctrl1(control[index]);
if(ctrdata[index] != -1) {
extencount[1] = (unsigned long long)ctrdata[index];
write_c0_perfcntr1((unsigned long)0);
}
break;
case 2:
write_c0_perfctrl2(control[index]);
if(ctrdata[index] != -1) {
extencount[2] = (unsigned long long)ctrdata[index];
write_c0_perfcntr2((unsigned long)0);
}
break;
case 3:
write_c0_perfctrl3(control[index]);
if(ctrdata[index] != -1) {
extencount[3] = (unsigned long long)ctrdata[index];
write_c0_perfcntr3((unsigned long)0);
}
break;
}
nparsed -= 3;
}
return (len);
}
void start_cntrs(unsigned int event0, unsigned int event1)
{
write_c0_perfcntr0(0x00000000);
write_c0_perfcntr1(0x00000000);
/*
* go...
*/
write_c0_perfctrl0(0x80000000 | M_PERFCTL_EVENT(event0) | 0xf);
write_c0_perfctrl1(0x00000000 | M_PERFCTL_EVENT(event1) | 0xf);
}
void stop_cntrs(void)
{
write_c0_perfctrl0(0);
write_c0_perfctrl1(0);
}