[i-g-t,v2] tests/intel: Add tests to run suspend without display

[Gupta, Anshuman]

> -----Original Message-----
> From: Sundaresan, Sujaritha <sujaritha.sundaresan at intel.com>
> Sent: Thursday, March 14, 2024 4:28 PM
> To: igt-dev at lists.freedesktop.org
> Cc: Gupta, Anshuman <anshuman.gupta at intel.com>; Sundaresan, Sujaritha
> <sujaritha.sundaresan at intel.com>
> Subject: [i-g-t,v2] tests/intel: Add tests to run suspend without display
> 
> Add tests to validate basic execution suspend/resume cycle without display
> module to rule out display related issues from the suspend/resume stack.
> 
> v2: Add normal reload cycle after running test (Anshuman)
> 
> Signed-off-by: Sujaritha Sundaresan <sujaritha.sundaresan at intel.com>
Reviewed-by: Anshuman Gupta <anshuman.gupta at intel.com>
> ---
>  tests/intel/xe_pm.c | 34 ++++++++++++++++++++++++++++++++++
>  1 file changed, 34 insertions(+)
> 
> diff --git a/tests/intel/xe_pm.c b/tests/intel/xe_pm.c index
> fcbed6249..f6ef5d124 100644
> --- a/tests/intel/xe_pm.c
> +++ b/tests/intel/xe_pm.c
> @@ -16,6 +16,7 @@
> 
>  #include "igt.h"
>  #include "lib/igt_device.h"
> +#include "lib/igt_kmod.h"
>  #include "lib/igt_pm.h"
>  #include "lib/igt_sysfs.h"
>  #include "lib/igt_syncobj.h"
> @@ -246,6 +247,10 @@ static void close_fw_handle(int sig)
>   * Description: suspend/autoresume on %arg[1] state and exec after RPM
>   * Functionality: pm - %arg[1]
>   *
> + * SUBTEST: %s-without-display
> + * Description: suspend/autoresume on %arg[1] state without display
> + * Functionality: pm - %arg[1]
> + *
>   * arg[1]:
>   *
>   * @s2idle:	s2idle
> @@ -565,6 +570,7 @@ igt_main
>  	struct drm_xe_engine_class_instance *hwe;
>  	device_t device;
>  	uint32_t d3cold_allowed;
> +	const char *opts;
>  	int sysfs_fd;
> 
>  	const struct s_state {
> @@ -628,6 +634,34 @@ igt_main
>  					  NO_RPM);
>  		}
> 
> +		igt_subtest_f("%s-without-display", s->name) {
> +
> +			if (!drmModeGetResources(device.fd_xe))
> +				return;
> +
> +			xe_for_each_engine(device.fd_xe, hwe) {
> +
> +				igt_debug("Reload w/o display\n");
> +
> +				igt_kmsg(KMSG_INFO "Unloading Xe\n");
> +				igt_assert_eq(igt_xe_driver_unload(),0);
> +
> +				igt_kmsg(KMSG_INFO "Re-loading Xe without
> display\n");
> +
> 	igt_assert_eq(igt_xe_driver_load("enable_display=0"),0);
> +
> +				test_exec(device, hwe, 1, 2, s->state,
> +					  NO_RPM);
> +
> +				igt_debug("Reload as normal\n");
> +
> +				igt_kmsg(KMSG_INFO "Unloading Xe\n");
> +				igt_assert_eq(igt_xe_driver_unload(),0);
> +
> +				igt_kmsg(KMSG_INFO "Re-loading Xe\n");
> +				igt_assert_eq(igt_xe_driver_load(opts),0);
> +			}
> +		}
> +
>  		for (const struct d_state *d = d_states; d->name; d++) {
>  			igt_subtest_f("%s-%s-basic-exec", s->name, d->name) {
>  				igt_assert(setup_d3(device, d->state));
> --
> 2.25.1