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drm/i915/xehp: Correct steering initialization

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Another mistake during the conversion to DSS bitmaps:  after retrieving
the DSS ID intel_sseu_find_first_xehp_dss() we forgot to modulo it down
to obtain which ID within the current gslice it is.

Fixes: b87d39019651 ("drm/i915/sseu: Disassociate internal subslice mask representation from uapi")
Cc: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220607175716.3338661-1-matthew.d.roper@intel.com
This commit is contained in:
Matt Roper 2022-06-07 10:57:16 -07:00
parent c5cb0002d1
commit 17f65658c8
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/gt/intel_workarounds.c
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@ -1177,8 +1177,8 @@ xehp_init_mcr(struct intel_gt *gt, struct i915_wa_list *wal)
}
slice = __ffs(slice_mask);
subslice = intel_sseu_find_first_xehp_dss(sseu, GEN_DSS_PER_GSLICE, slice);
WARN_ON(subslice > GEN_DSS_PER_GSLICE);
subslice = intel_sseu_find_first_xehp_dss(sseu, GEN_DSS_PER_GSLICE, slice) %
GEN_DSS_PER_GSLICE;
__add_mcr_wa(gt, wal, slice, subslice);