-----Original Message----- From: Roper, Matthew D matthew.d.roper@intel.com Sent: Wednesday, June 8, 2022 6:21 AM To: intel-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org; Roper, Matthew D matthew.d.roper@intel.com; Gupta, Anshuman anshuman.gupta@intel.com; Nilawar, Badal badal.nilawar@intel.com; Kumar Valsan, Prathap prathap.kumar.valsan@intel.com Subject: [PATCH] drm/i915: More PVC+DG2 workarounds
A new PVC+DG2 workaround has appeared recently:
- Wa_16015675438
And a couple existing DG2 workarounds have been extended to PVC:
- Wa_14015795083
- Wa_18018781329
Looks good to me. Reviewed-by: Anshuman Gupta anshuman.gupta@intel.com Regards, Anshuman Gupta.
Note that Wa_16015675438 asks us to program a register that is in the 0x2xxx range typically associated with the RCS engine, even though PVC does not have an RCS. By default the GuC will think we've made a mistake and throw an exception when it sees this register on a CCS engine's save/restore list, so we need to pass an extra GuC control flag to tell it that this is expected and not a problem.
Signed-off-by: Anshuman Gupta anshuman.gupta@intel.com Signed-off-by: Badal Nilawar badal.nilawar@intel.com Signed-off-by: Prathap Kumar Valsan prathap.kumar.valsan@intel.com Signed-off-by: Matt Roper matthew.d.roper@intel.com
drivers/gpu/drm/i915/gt/intel_gt_regs.h | 1 + drivers/gpu/drm/i915/gt/intel_workarounds.c | 24 +++++++++++++++------ drivers/gpu/drm/i915/gt/uc/intel_guc.c | 4 ++++ drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h | 1 + 4 files changed, 23 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h index c8129a351731..226557018037 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h +++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h @@ -140,6 +140,7 @@ #define FF_SLICE_CS_CHICKEN2 _MMIO(0x20e4) #define GEN9_TSG_BARRIER_ACK_DISABLE (1 << 8) #define GEN9_POOLED_EU_LOAD_BALANCING_FIX_DISABLE (1 << 10) +#define GEN12_PERF_FIX_BALANCING_CFE_DISABLE REG_BIT(15)
#define GEN9_CS_DEBUG_MODE1 _MMIO(0x20ec) #define FF_DOP_CLOCK_GATE_DISABLE REG_BIT(1) diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index 1e7ca3863f20..e1e70eff9aac 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -1491,13 +1491,20 @@ dg2_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) wa_write_clr(wal, GEN7_MISCCPCTL, GEN12_DOP_CLOCK_GATE_RENDER_ENABLE); }
+static void +pvc_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal) +{
- /* Wa_14015795083 */
- wa_write_clr(wal, GEN7_MISCCPCTL,
GEN12_DOP_CLOCK_GATE_RENDER_ENABLE); +}
static void gt_init_workarounds(struct intel_gt *gt, struct i915_wa_list *wal) { struct drm_i915_private *i915 = gt->i915;
if (IS_PONTEVECCHIO(i915))
; /* none yet */
pvc_gt_workarounds_init(gt, wal);@@ -2082,12 +2089,6 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal) * performance guide section. */ wa_write_or(wal, XEHP_L3SCQREG7, BLEND_FILL_CACHING_OPT_DIS);
/* Wa_18018781329:dg2 */wa_write_or(wal, RENDER_MOD_CTRL, FORCE_MISS_FTLB);wa_write_or(wal, COMP_MOD_CTRL, FORCE_MISS_FTLB);wa_write_or(wal, VDBX_MOD_CTRL, FORCE_MISS_FTLB);wa_write_or(wal, VEBX_MOD_CTRL, FORCE_MISS_FTLB);}
if (IS_DG2_GRAPHICS_STEP(i915, G11, STEP_A0, STEP_B0)) { @@ -
2700,6 +2701,15 @@ general_render_compute_wa_init(struct intel_engine_cs *engine, struct i915_wa_li
/* Wa_22014226127:dg2,pvc */ wa_write_or(wal, LSC_CHICKEN_BIT_0,DISABLE_D8_D16_COASLESCE);
/* Wa_16015675438:dg2,pvc */wa_masked_en(wal, FF_SLICE_CS_CHICKEN2,+GEN12_PERF_FIX_BALANCING_CFE_DISABLE);
/* Wa_18018781329:dg2,pvc */wa_write_or(wal, RENDER_MOD_CTRL, FORCE_MISS_FTLB);wa_write_or(wal, COMP_MOD_CTRL, FORCE_MISS_FTLB);wa_write_or(wal, VDBX_MOD_CTRL, FORCE_MISS_FTLB);wa_write_or(wal, VEBX_MOD_CTRL, FORCE_MISS_FTLB);}
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c index 2c4ad4a65089..35887cb53201 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c @@ -327,6 +327,10 @@ static u32 guc_ctl_wa_flags(struct intel_guc *guc) IS_DG2_GRAPHICS_STEP(gt->i915, G11, STEP_A0, STEP_FOREVER)) flags |= GUC_WA_CONTEXT_ISOLATION;
- /* Wa_16015675438 */
- if (!RCS_MASK(gt))
flags |= GUC_WA_RCS_REGS_IN_CCS_REGS_LIST;- return flags;
}
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h index 42cb7a9a6199..b3c9a9327f76 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h @@ -105,6 +105,7 @@ #define GUC_WA_PRE_PARSER BIT(14) #define GUC_WA_HOLD_CCS_SWITCHOUT BIT(17) #define GUC_WA_POLLCS BIT(18) +#define GUC_WA_RCS_REGS_IN_CCS_REGS_LIST BIT(21)
#define GUC_CTL_FEATURE 2
#define GUC_CTL_ENABLE_SLPC BIT(2)
2.35.3