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pm_rps: New subtest for gpu reset

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Test that RPS functions as expected after a gpu reset.

Signed-off-by: Jeff McGee <jeff.mcgee@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Jeff McGee 2014-01-31 10:13:53 -06:00 committed by Daniel Vetter
parent 663d758d91
commit 2b8d953aa2
1 changed files with 62 additions and 0 deletions
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62
tests/pm_rps.c
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@ -133,6 +133,16 @@ static void checkit(const int *freqs)
igt_assert(freqs[RP1] != 0);
}
static void matchit(const int *freqs1, const int *freqs2)
{
igt_assert(freqs1[CUR] == freqs2[CUR]);
igt_assert(freqs1[MIN] == freqs2[MIN]);
igt_assert(freqs1[MAX] == freqs2[MAX]);
igt_assert(freqs1[RP0] == freqs2[RP0]);
igt_assert(freqs1[RP1] == freqs2[RP1]);
igt_assert(freqs1[RPn] == freqs2[RPn]);
}
static void dumpit(const int *freqs)
{
int i;
@ -462,6 +472,55 @@ static void loaded_check(void)
log("Required %d msec to reach cur=max\n", wait);
}
#define STABILIZE_WAIT_TIMESTEP_MSEC 100
#define STABILIZE_WAIT_TIMEOUT_MSEC 2000
static void stabilize_check(int *freqs)
{
int wait = 0;
do {
read_freqs(freqs);
dump(freqs);
usleep(1000 * STABILIZE_WAIT_TIMESTEP_MSEC);
wait += STABILIZE_WAIT_TIMESTEP_MSEC;
} while (wait < STABILIZE_WAIT_TIMEOUT_MSEC);
log("Waited %d msec to stabilize cur\n", wait);
}
static void reset(void)
{
int pre_freqs[NUMFREQ];
int post_freqs[NUMFREQ];
log("Apply low load...\n");
load_helper_run(LOW);
stabilize_check(pre_freqs);
log("Stop rings...\n");
stop_rings();
while (rings_stopped())
usleep(1000 * 100);
log("Ring stop cleared\n");
log("Apply high load...\n");
load_helper_set_load(HIGH);
loaded_check();
log("Apply low load...\n");
load_helper_set_load(LOW);
stabilize_check(post_freqs);
matchit(pre_freqs, post_freqs);
log("Apply high load...\n");
load_helper_set_load(HIGH);
loaded_check();
log("Removing load...\n");
load_helper_stop();
idle_check();
}
static void pm_rps_exit_handler(int sig)
{
if (origfreqs[MIN] > readval(stuff[MAX].filp)) {
@ -555,5 +614,8 @@ int main(int argc, char **argv)
load_helper_stop();
}
igt_subtest("reset")
reset();
igt_exit();
}