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

[Sundaresan, Sujaritha]

On 2/22/2024 12:33 PM, Gupta, Anshuman wrote:
>
>> -----Original Message-----
>> From: Sundaresan, Sujaritha <sujaritha.sundaresan at intel.com>
>> Sent: Thursday, February 22, 2024 12:26 PM
>> To: igt-dev at lists.freedesktop.org
>> Cc: Gupta, Anshuman <anshuman.gupta at intel.com>
>> Subject: Re: [i-g-t] tests/intel: Add tests to run suspend without display
>>
>> Hi all,
>>
>> As a heads up to those reviewing the patch, the pre-merge testing for the
>> added subtests is likely to fail due to a known sporadic issue with unloading
>> and reloading the driver with no display.
>>
>> Thanks,
>>
>> Suja
>>
>> On 2/22/2024 12:36 PM, Sujaritha Sundaresan wrote:
>>> Add tests to validate basic execution suspend/resume cycle without
>>> display module to rule out display related issues from the
>>> suspend/resume stack.
>>>
>>> Signed-off-by: Sujaritha Sundaresan <sujaritha.sundaresan at intel.com>
>>> ---
>>>    tests/intel/xe_pm.c | 22 ++++++++++++++++++++++
>>>    1 file changed, 22 insertions(+)
>>>
>>> diff --git a/tests/intel/xe_pm.c b/tests/intel/xe_pm.c index
>>> a0045da0b..e94835f0d 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"
>>> @@ -236,6 +237,10 @@ 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
>>> @@ -618,6 +623,23 @@ 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_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);
>>> +			}
>>> +		}
> We need to reload the driver with display as normal ?
> Anshuman.

Hmm maybe. That will need another unload and non-conditional re-load 
cycle right ?

Suja

>>> +
>>>    		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));