tests/intel/xe_pm: Update runtime pm conditions

Xe is no longer holding a runtime pm reference for the life
of a VM or exec_queue.

Also, IGT changes autosuspend time to a minimal time, so we
cannot guarantee that rpm is still suspended after the execution
has finished.

So, the reference usage is not a reliable reference.

Hence, start using runtime_active_time as the indicator
that runtime_pm resumed upon our actions.

v2: Usage of runtime_active_pm and inclusion of mmap tests.
v3: Add doc for the exported lib function (Kamil)
v4: Use uint64_t for active_time, which is a big number in
    milliseconds. (Kamil)
v5: Used PRInt macros instead of %ld (Kamil)
    Tell what unit of time is returned. (Kamil)
v6: s/miliseconds/millisenconds (Francois)

Cc: Kamil Konieczny <kamil.konieczny@linux.intel.com>
Cc: Badal Nilawar <badal.nilawar@intel.com>
Cc: Anshuman Gupta <anshuman.gupta@intel.com>
Cc: Francois Dugast <francois.dugast@intel.com>
Reviewed-by: Francois Dugast <francois.dugast@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

2 files changed, 26 insertions, 0 deletions

diff --git a/lib/igt_pm.c b/lib/igt_pm.c
index fe7692960..cb18a88b9 100644
--- a/lib/igt_pm.c
+++ b/lib/igt_pm.c
@@ -1413,6 +1413,31 @@ int igt_pm_get_runtime_suspended_time(struct pci_device *pci_dev)
 }
 
 /**
+ * igt_pm_get_runtime_active_time:
+ * @pci_dev: PCI device struct
+ *
+ * Return: The total time in milliseconds that the device has been active.
+ */
+uint64_t igt_pm_get_runtime_active_time(struct pci_device *pci_dev)
+{
+	char time_str[64];
+	int time_fd;
+	uint64_t time;
+
+	time_fd = igt_pm_get_power_attr_fd_rdonly(pci_dev, "runtime_active_time");
+	if (igt_pm_read_power_attr(time_fd, time_str, 64, false)) {
+		igt_assert(sscanf(time_str, "%ld", &time) > 0);
+
+		igt_debug("runtime active time for PCI '%04x:%02x:%02x.%01x' = %" PRIu64 "\n",
+			  pci_dev->domain, pci_dev->bus, pci_dev->dev, pci_dev->func, time);
+
+		return time;
+	}
+
+	return -1;
+}
+
+/**
  * igt_pm_get_runtime_usage:
  * @pci_dev: pci device
  *
diff --git a/lib/igt_pm.h b/lib/igt_pm.h
index 91ee05cd1..15e301533 100644
--- a/lib/igt_pm.h
+++ b/lib/igt_pm.h
@@ -94,6 +94,7 @@ void igt_pm_print_pci_card_runtime_status(void);
 bool i915_is_slpc_enabled_gt(int drm_fd, int gt);
 bool i915_is_slpc_enabled(int drm_fd);
 int igt_pm_get_runtime_suspended_time(struct pci_device *pci_dev);
+uint64_t igt_pm_get_runtime_active_time(struct pci_device *pci_dev);
 int igt_pm_get_runtime_usage(struct pci_device *pci_dev);
 void igt_pm_ignore_slpc_efficient_freq(int i915, int gtfd, bool val);