diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/selftest_rc6.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/selftest_rc6.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gt/selftest_rc6.c b/drivers/gpu/drm/i915/gt/selftest_rc6.c index 95b165faeba7..2dc460624bbc 100644 --- a/drivers/gpu/drm/i915/gt/selftest_rc6.c +++ b/drivers/gpu/drm/i915/gt/selftest_rc6.c @@ -11,6 +11,7 @@ #include "selftest_rc6.h" #include "selftests/i915_random.h" +#include "selftests/librapl.h" static u64 rc6_residency(struct intel_rc6 *rc6) { @@ -31,7 +32,9 @@ int live_rc6_manual(void *arg) { struct intel_gt *gt = arg; struct intel_rc6 *rc6 = >->rc6; + u64 rc0_power, rc6_power; intel_wakeref_t wakeref; + ktime_t dt; u64 res[2]; int err = 0; @@ -54,7 +57,12 @@ int live_rc6_manual(void *arg) msleep(1); /* wakeup is not immediate, takes about 100us on icl */ res[0] = rc6_residency(rc6); + + dt = ktime_get(); + rc0_power = librapl_energy_uJ(); msleep(250); + rc0_power = librapl_energy_uJ() - rc0_power; + dt = ktime_sub(ktime_get(), dt); res[1] = rc6_residency(rc6); if ((res[1] - res[0]) >> 10) { pr_err("RC6 residency increased by %lldus while disabled for 250ms!\n", @@ -63,13 +71,24 @@ int live_rc6_manual(void *arg) goto out_unlock; } + rc0_power = div64_u64(NSEC_PER_SEC * rc0_power, ktime_to_ns(dt)); + if (!rc0_power) { + pr_err("No power measured while in RC0\n"); + err = -EINVAL; + goto out_unlock; + } + /* Manually enter RC6 */ intel_rc6_park(rc6); res[0] = rc6_residency(rc6); + intel_uncore_forcewake_flush(rc6_to_uncore(rc6), FORCEWAKE_ALL); + dt = ktime_get(); + rc6_power = librapl_energy_uJ(); msleep(100); + rc6_power = librapl_energy_uJ() - rc6_power; + dt = ktime_sub(ktime_get(), dt); res[1] = rc6_residency(rc6); - if (res[1] == res[0]) { pr_err("Did not enter RC6! RC6_STATE=%08x, RC6_CONTROL=%08x, residency=%lld\n", intel_uncore_read_fw(gt->uncore, GEN6_RC_STATE), @@ -78,6 +97,15 @@ int live_rc6_manual(void *arg) err = -EINVAL; } + rc6_power = div64_u64(NSEC_PER_SEC * rc6_power, ktime_to_ns(dt)); + pr_info("GPU consumed %llduW in RC0 and %llduW in RC6\n", + rc0_power, rc6_power); + if (2 * rc6_power > rc0_power) { + pr_err("GPU leaked energy while in RC6!\n"); + err = -EINVAL; + goto out_unlock; + } + /* Restore what should have been the original state! */ intel_rc6_unpark(rc6); |