Commit 7d4d1c54 authored by John Harrison's avatar John Harrison
Browse files

drm/xe/guc: Support crash dump notification from GuC 



Add support for the two crash dump notifications from GuC. Either one
means GuC is toast, so just capture state trigger a reset.

Signed-off-by: default avatarJohn Harrison <John.C.Harrison@Intel.com>
Reviewed-by: default avatarMatthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241108212737.2044007-3-John.C.Harrison@Intel.com
parent 902de142

drivers/gpu/drm/xe/xe_guc_ct.c

+23 −0
Original line number Diff line number Diff line
@@ -54,6 +54,7 @@ enum { 
	CT_DEAD_PARSE_G2H_UNKNOWN,		/* 0x1000 */

	CT_DEAD_PARSE_G2H_ORIGIN,		/* 0x2000 */

	CT_DEAD_PARSE_G2H_TYPE,			/* 0x4000 */

	CT_DEAD_CRASH,				/* 0x8000 */

};



static void ct_dead_worker_func(struct work_struct *w);
@@ -1120,6 +1121,24 @@ static int parse_g2h_event(struct xe_guc_ct *ct, u32 *msg, u32 len) 
	return 0;

}



static int guc_crash_process_msg(struct xe_guc_ct *ct, u32 action)

{

	struct xe_gt *gt = ct_to_gt(ct);



	if (action == XE_GUC_ACTION_NOTIFY_CRASH_DUMP_POSTED)

		xe_gt_err(gt, "GuC Crash dump notification\n");

	else if (action == XE_GUC_ACTION_NOTIFY_EXCEPTION)

		xe_gt_err(gt, "GuC Exception notification\n");

	else

		xe_gt_err(gt, "Unknown GuC crash notification: 0x%04X\n", action);



	CT_DEAD(ct, NULL, CRASH);



	kick_reset(ct);



	return 0;

}



static int parse_g2h_response(struct xe_guc_ct *ct, u32 *msg, u32 len)

{

	struct xe_gt *gt =  ct_to_gt(ct);
@@ -1294,6 +1313,10 @@ static int process_g2h_msg(struct xe_guc_ct *ct, u32 *msg, u32 len) 
	case GUC_ACTION_GUC2PF_ADVERSE_EVENT:

		ret = xe_gt_sriov_pf_monitor_process_guc2pf(gt, hxg, hxg_len);

		break;

	case XE_GUC_ACTION_NOTIFY_CRASH_DUMP_POSTED:

	case XE_GUC_ACTION_NOTIFY_EXCEPTION:

		ret = guc_crash_process_msg(ct, action);

		break;

	default:

		xe_gt_err(gt, "unexpected G2H action 0x%04x\n", action);

	}