From 7d4d1c54c40ef8469ab46b9a6677f380f9b01e75 Mon Sep 17 00:00:00 2001 From: John Harrison Date: Fri, 8 Nov 2024 13:27:37 -0800 Subject: [PATCH] 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: John Harrison Reviewed-by: Matthew Brost Link: https://patchwork.freedesktop.org/patch/msgid/20241108212737.2044007-3-John.C.Harrison@Intel.com --- drivers/gpu/drm/xe/xe_guc_ct.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_guc_ct.c b/drivers/gpu/drm/xe/xe_guc_ct.c index 63bd91963eb1..7eb175a0b874 100644 --- a/drivers/gpu/drm/xe/xe_guc_ct.c +++ b/drivers/gpu/drm/xe/xe_guc_ct.c @@ -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); } -- 2.20.1