Oscar Mateo <oscar.ma...@intel.com> writes:
> Revert to the legacy implementation to avoid a system hang.
>
> v2: Correct the address for GAMW_ECO_DEV_RW_IA_REG
> v3: Renamed to Wa_220166154
> v4: Rebased on top of the WA refactoring
> v5: Added References (Mika)
>
> References: HSDES#220166154
> Cc: Mika Kuoppala <mika.kuopp...@linux.intel.com>
> Signed-off-by: Oscar Mateo <oscar.ma...@intel.com>
Yeah and me asking for references tag for these workarounds where
we have a hsdes entry as a wa name nowadays was very silly.
Reviewed-by: Mika Kuoppala <mika.kuopp...@linux.intel.com>
> ---
> drivers/gpu/drm/i915/i915_reg.h | 3 +++
> drivers/gpu/drm/i915/intel_workarounds.c | 6 ++++++
> 2 files changed, 9 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index e8ab663..344509a4 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -8273,6 +8273,9 @@ enum {
> #define GEN11_LSN_UNSLCVC_GAFS_HALF_CL2_MACALLOC (1 << 9)
> #define GEN11_LSN_UNSLCVC_GAFS_HALF_SF_MAXALLOC (1 << 7)
>
> +#define GAMW_ECO_DEV_RW_IA_REG _MMIO(0x4080)
> +#define GAMW_ECO_DEV_CTX_RELOAD_DISABLE (1 << 7)
> +
> /* IVYBRIDGE DPF */
> #define GEN7_L3CDERRST1(slice) _MMIO(0xB008 + (slice) * 0x200)
> /* L3CD Error Status 1 */
> #define GEN7_L3CDERRST1_ROW_MASK (0x7ff<<14)
> diff --git a/drivers/gpu/drm/i915/intel_workarounds.c
> b/drivers/gpu/drm/i915/intel_workarounds.c
> index 312846e..64f2c9b9 100644
> --- a/drivers/gpu/drm/i915/intel_workarounds.c
> +++ b/drivers/gpu/drm/i915/intel_workarounds.c
> @@ -733,6 +733,12 @@ static void icl_gt_workarounds_apply(struct
> drm_i915_private *dev_priv)
> I915_WRITE(GEN11_LSN_UNSLCVC, (I915_READ(GEN11_LSN_UNSLCVC) |
> GEN11_LSN_UNSLCVC_GAFS_HALF_SF_MAXALLOC |
>
> GEN11_LSN_UNSLCVC_GAFS_HALF_CL2_MACALLOC));
> +
> + /* Wa_220166154:icl
> + * Formerly known as WaDisCtxReload
> + */
> + I915_WRITE(GAMW_ECO_DEV_RW_IA_REG, (I915_READ(GAMW_ECO_DEV_RW_IA_REG) |
> + GAMW_ECO_DEV_CTX_RELOAD_DISABLE));
> }
>
> void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv)
> --
> 1.9.1
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