diff options
| author | Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> | 2026-03-24 08:37:23 -0700 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2026-03-30 08:52:08 -0400 |
| commit | e3fb579872a8d9cf264c52710d5839de3afa6fc1 (patch) | |
| tree | a340cc7cee47fc5473442b8704520d416278bc9a /drivers/gpu/drm | |
| parent | 76903b2057c8677c2c006e87fede15f496555dc0 (diff) | |
drm/xe/pxp: Don't allow PXP on older PTL GSC FWs
On PTL, older GSC FWs have a bug that can cause them to crash during
PXP invalidation events, which leads to a complete loss of power
management on the media GT. Therefore, we can't use PXP on FWs that
have this bug, which was fixed in PTL GSC build 1396.
Fixes: b1dcec9bd8a1 ("drm/xe/ptl: Enable PXP for PTL")
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Julia Filipchuk <julia.filipchuk@intel.com>
Reviewed-by: Julia Filipchuk <julia.filipchuk@intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/20260324153718.3155504-10-daniele.ceraolospurio@intel.com
(cherry picked from commit 6eb04caaa972934c9b6cea0e0c29e466bf9a346f)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_pxp.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_pxp.c b/drivers/gpu/drm/xe/xe_pxp.c index 088a1ab75f70..872217f30375 100644 --- a/drivers/gpu/drm/xe/xe_pxp.c +++ b/drivers/gpu/drm/xe/xe_pxp.c @@ -380,6 +380,18 @@ int xe_pxp_init(struct xe_device *xe) return 0; } + /* + * On PTL, older GSC FWs have a bug that can cause them to crash during + * PXP invalidation events, which leads to a complete loss of power + * management on the media GT. Therefore, we can't use PXP on FWs that + * have this bug, which was fixed in PTL GSC build 1396. + */ + if (xe->info.platform == XE_PANTHERLAKE && + gt->uc.gsc.fw.versions.found[XE_UC_FW_VER_RELEASE].build < 1396) { + drm_info(&xe->drm, "PXP requires PTL GSC build 1396 or newer\n"); + return 0; + } + pxp = drmm_kzalloc(&xe->drm, sizeof(struct xe_pxp), GFP_KERNEL); if (!pxp) { err = -ENOMEM; |