Commit 456b32c9 authored by John Harrison's avatar John Harrison
Browse files

drm/xe/guc: Add test for G2G communications 



Add a test for sending messages from every GuC to every other GuC to
test G2G communications.

Note that, being a debug only feature, the test interface only exists
in pre-production builds of the GuC firmware.

v2: Fix 'default' case to actually use the driver's registration code
as well as allocation. Add comments explaining the different test
types. Fix (C) date and an assert. Review feedback from Daniele.

Signed-off-by: default avatarJohn Harrison <John.C.Harrison@Intel.com>
Reviewed-by: default avatarDaniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://lore.kernel.org/r/20250910210237.603576-5-John.C.Harrison@Intel.com
parent 537773db

drivers/gpu/drm/xe/abi/guc_actions_abi.h

+2 −0
Original line number Diff line number Diff line
@@ -155,6 +155,8 @@ enum xe_guc_action { 
	XE_GUC_ACTION_NOTIFY_FLUSH_LOG_BUFFER_TO_FILE = 0x8003,

	XE_GUC_ACTION_NOTIFY_CRASH_DUMP_POSTED = 0x8004,

	XE_GUC_ACTION_NOTIFY_EXCEPTION = 0x8005,

	XE_GUC_ACTION_TEST_G2G_SEND = 0xF001,

	XE_GUC_ACTION_TEST_G2G_RECV = 0xF002,

	XE_GUC_ACTION_LIMIT

};

drivers/gpu/drm/xe/tests/xe_guc_g2g_test.c

0 → 100644
+776 −0

File added.

Preview size limit exceeded, changes collapsed.

drivers/gpu/drm/xe/tests/xe_live_test_mod.c

+2 −0
Original line number Diff line number Diff line
@@ -10,12 +10,14 @@ extern struct kunit_suite xe_bo_shrink_test_suite; 
extern struct kunit_suite xe_dma_buf_test_suite;

extern struct kunit_suite xe_migrate_test_suite;

extern struct kunit_suite xe_mocs_test_suite;

extern struct kunit_suite xe_guc_g2g_test_suite;



kunit_test_suite(xe_bo_test_suite);

kunit_test_suite(xe_bo_shrink_test_suite);

kunit_test_suite(xe_dma_buf_test_suite);

kunit_test_suite(xe_migrate_test_suite);

kunit_test_suite(xe_mocs_test_suite);

kunit_test_suite(xe_guc_g2g_test_suite);



MODULE_AUTHOR("Intel Corporation");

MODULE_LICENSE("GPL");

drivers/gpu/drm/xe/xe_device_types.h

+7 −0
Original line number Diff line number Diff line
@@ -595,6 +595,13 @@ struct xe_device { 
		u8 region_mask;

	} psmi;



#if IS_ENABLED(CONFIG_DRM_XE_KUNIT_TEST)

	/** @g2g_test_array: for testing G2G communications */

	u32 *g2g_test_array;

	/** @g2g_test_count: for testing G2G communications */

	atomic_t g2g_test_count;

#endif



	/* private: */



#if IS_ENABLED(CONFIG_DRM_XE_DISPLAY)

drivers/gpu/drm/xe/xe_guc.c

+4 −0
Original line number Diff line number Diff line
@@ -1684,3 +1684,7 @@ void xe_guc_declare_wedged(struct xe_guc *guc) 
	xe_guc_ct_stop(&guc->ct);

	xe_guc_submit_wedge(guc);

}



#if IS_ENABLED(CONFIG_DRM_XE_KUNIT_TEST)

#include "tests/xe_guc_g2g_test.c"

#endif