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

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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: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241108212737.2044007-3-John.C.Harrison@Intel.com
This commit is contained in:
John Harrison 2024-11-08 13:27:37 -08:00
parent 902de14215
commit 7d4d1c54c4
1 changed files with 23 additions and 0 deletions
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23
drivers/gpu/drm/xe/xe_guc_ct.c
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@ -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);
}