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drm/i915/icl: WaDisCtxReload

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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)
v6:
  - Rebased
  - C, not lisp (Chris)

References: HSDES#220166154
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525814984-20039-9-git-send-email-oscar.mateo@intel.com
This commit is contained in:
Oscar Mateo 2018-05-08 14:29:30 -07:00 committed by Mika Kuoppala
parent 6b967dc392
commit 908ae05173
2 changed files with 9 additions and 0 deletions
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3
drivers/gpu/drm/i915/i915_reg.h
View file

@ -8273,6 +8273,9 @@ enum {
#define GEN11_LSN_UNSLCVC_GAFS_HALF_CL2_MAXALLOC (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)

6
drivers/gpu/drm/i915/intel_workarounds.c
View file

@ -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_MAXALLOC);
/* 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)