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drm/xe/gsc: Wedge the device if the GSCCS reset fails

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Due to the special handling of the GSCCS in HW, we can't escalate to GT
reset when we receive the reset failure interrupt; the specs indicate
that we should trigger an FLR instead, but we do not have support for
that at the moment, so the HW will stay permanently in a broken state.
We should therefore mark the device as wedged, the same as if the GT
reset had failed.

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Julia Filipchuk <julia.filipchuk@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240828221457.2752868-1-daniele.ceraolospurio@intel.com
This commit is contained in:
Daniele Ceraolo Spurio 2024-08-28 15:14:57 -07:00
parent 5ee2d63ca1
commit 02a416afbe
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/xe/xe_gsc.c
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@ -335,9 +335,11 @@ static int gsc_er_complete(struct xe_gt *gt)
if (er_status == GSCI_TIMER_STATUS_TIMER_EXPIRED) {
/*
* XXX: we should trigger an FLR here, but we don't have support
* for that yet.
* for that yet. Since we can't recover from the error, we
* declare the device as wedged.
*/
xe_gt_err(gt, "GSC ER timed out!\n");
xe_device_declare_wedged(gt_to_xe(gt));
return -EIO;
}