/**
* intel_register_access_init:
* @pci_dev: intel graphics pci device
* @safe: use safe register access tables
*
* This initializes the new register access library, which supports forcewake
* handling and also allows register access to be checked with an explicit
* whitelist.
*
* It also initializes #igt_global_mmio like intel_mmio_use_pci_bar().
*
* @pci_dev can be obtained from intel_get_pci_device().
*/
int
intel_register_access_init(struct pci_device *pci_dev, int safe)
{
int ret;
/* after old API is deprecated, remove this */
if (igt_global_mmio == NULL)
intel_mmio_use_pci_bar(pci_dev);
igt_assert(igt_global_mmio != NULL);
if (mmio_data.inited)
return -1;
mmio_data.safe = (safe != 0 &&
intel_gen(pci_dev->device_id) >= 4) ? true : false;
mmio_data.i915_devid = pci_dev->device_id;
if (mmio_data.safe)
mmio_data.map = intel_get_register_map(mmio_data.i915_devid);
/* Find where the forcewake lock is. Forcewake doesn't exist
* gen < 6, but the debugfs should do the right things for us.
*/
ret = igt_open_forcewake_handle();
if (ret == -1)
mmio_data.key = FAKEKEY;
else
mmio_data.key = ret;
mmio_data.inited++;
return 0;
}
int main(int argc, char **argv)
{
pid_t child;
uint64_t ring_idle = 0, ring_time = 0;
struct timeval start, end;
static struct rusage rusage;
int status;
intel_mmio_use_pci_bar(intel_get_pci_device());
if (argc == 1) {
fprintf(stderr, "usage: %s cmd [args...]\n", argv[0]);
return 1;
}
signal(SIGCHLD, sighandler);
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
gettimeofday(&start, NULL);
child = spawn(argv+1);
if (child < 0)
return 127;
while (!goddo) {
uint32_t ring_head, ring_tail;
ring_head = INREG(LP_RING + RING_HEAD) & HEAD_ADDR;
ring_tail = INREG(LP_RING + RING_TAIL) & TAIL_ADDR;
if (ring_tail == ring_head)
ring_idle++;
ring_time++;
usleep(1000000 / SAMPLES_PER_SEC);
}
gettimeofday(&end, NULL);
timersub(&end, &start, &end);
waitpid(child, &status, 0);
getrusage(RUSAGE_CHILDREN, &rusage);
printf("user: %ld.%06lds, sys: %ld.%06lds, elapsed: %ld.%06lds, CPU: %.1f%%, GPU: %.1f%%\n",
rusage.ru_utime.tv_sec, rusage.ru_utime.tv_usec,
rusage.ru_stime.tv_sec, rusage.ru_stime.tv_usec,
end.tv_sec, end.tv_usec,
100*(rusage.ru_utime.tv_sec + 1e-6*rusage.ru_utime.tv_usec + rusage.ru_stime.tv_sec + 1e-6*rusage.ru_stime.tv_usec) / (end.tv_sec + 1e-6*end.tv_usec),
100 - ring_idle * 100. / ring_time);
return WEXITSTATUS(status);
}