On 19.09.2022 15:32, Matt Roper wrote:
> Gen8 was the first time our hardware had multicast registers (or at
> least the first time the multicast nature was exposed and MMIO accesses
> could be steered). There are some registers that transitioned from
> singleton behavior to multicast during the gen7 -> gen8 transition;
> let's duplicate the register definitions for those registers in
> preparation for upcoming patches that will handle MCR registers in a
> special manner.
>
> The registers adjusted are:
> * MISCCPCTL
> * SAMPLER_INSTDONE
> * ROW_INSTDONE
> * ROW_CHICKEN2
> * HALF_SLICE_CHICKEN1
> * HALF_SLICE_CHICKEN3
>
> Signed-off-by: Matt Roper <matthew.d.ro...@intel.com>
> ---
> drivers/gpu/drm/i915/gt/intel_engine_cs.c | 4 ++--
> drivers/gpu/drm/i915/gt/intel_gt_regs.h | 11 +++++++++-
> drivers/gpu/drm/i915/gt/intel_workarounds.c | 22 +++++++++----------
> .../gpu/drm/i915/gt/uc/intel_guc_capture.c | 4 ++--
> drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c | 2 +-
> drivers/gpu/drm/i915/gvt/handlers.c | 2 +-
> drivers/gpu/drm/i915/gvt/mmio_context.c | 2 +-
> drivers/gpu/drm/i915/intel_gvt_mmio_table.c | 2 +-
> drivers/gpu/drm/i915/intel_pm.c | 10 ++++-----
> 9 files changed, 34 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> index 2ddcad497fa3..c408bac3c533 100644
> --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> @@ -1559,11 +1559,11 @@ void intel_engine_get_instdone(const struct
> intel_engine_cs *engine,
> for_each_ss_steering(iter, engine->gt, slice, subslice) {
> instdone->sampler[slice][subslice] =
> intel_gt_mcr_read(engine->gt,
> - GEN7_SAMPLER_INSTDONE,
> + GEN8_SAMPLER_INSTDONE,
> slice, subslice);
> instdone->row[slice][subslice] =
> intel_gt_mcr_read(engine->gt,
> - GEN7_ROW_INSTDONE,
> + GEN8_ROW_INSTDONE,
> slice, subslice);
> }
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h
> b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
> index 1cbb7226400b..e5a1ea255640 100644
> --- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h
> +++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
> @@ -647,6 +647,9 @@
>
> #define GEN7_MISCCPCTL _MMIO(0x9424)
> #define GEN7_DOP_CLOCK_GATE_ENABLE (1 << 0)
> +
> +#define GEN8_MISCCPCTL _MMIO(0x9424)
> +#define GEN8_DOP_CLOCK_GATE_ENABLE REG_BIT(0)
When I went through the driver to check if is there any instance where
platforms above Gen7 still using Gen7 registers, I found the following
two functions still using GEN7_MISCCPCTL. Can you check?
* dg2_gt_workarounds_init
* pvc_gt_workarounds_init
Regards,
Bala
> #define GEN12_DOP_CLOCK_GATE_RENDER_ENABLE REG_BIT(1)
> #define GEN8_DOP_CLOCK_GATE_CFCLK_ENABLE (1 << 2)
> #define GEN8_DOP_CLOCK_GATE_GUC_ENABLE (1 << 4)
> @@ -1068,18 +1071,22 @@
> #define GEN12_GAM_DONE _MMIO(0xcf68)
>
> #define GEN7_HALF_SLICE_CHICKEN1 _MMIO(0xe100) /* IVB GT1 + VLV
> */
> +#define GEN8_HALF_SLICE_CHICKEN1 _MMIO(0xe100)
> #define GEN7_MAX_PS_THREAD_DEP (8 << 12)
> #define GEN7_SINGLE_SUBSCAN_DISPATCH_ENABLE (1 << 10)
> #define GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE (1 << 4)
> #define GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE (1 << 3)
>
> #define GEN7_SAMPLER_INSTDONE _MMIO(0xe160)
> +#define GEN8_SAMPLER_INSTDONE _MMIO(0xe160)
> #define GEN7_ROW_INSTDONE _MMIO(0xe164)
> +#define GEN8_ROW_INSTDONE _MMIO(0xe164)
>
> #define HALF_SLICE_CHICKEN2 _MMIO(0xe180)
> #define GEN8_ST_PO_DISABLE (1 << 13)
>
> -#define HALF_SLICE_CHICKEN3 _MMIO(0xe184)
> +#define HSW_HALF_SLICE_CHICKEN3 _MMIO(0xe184)
> +#define GEN8_HALF_SLICE_CHICKEN3 _MMIO(0xe184)
> #define HSW_SAMPLE_C_PERFORMANCE (1 << 9)
> #define GEN8_CENTROID_PIXEL_OPT_DIS (1 << 8)
> #define GEN9_DISABLE_OCL_OOB_SUPPRESS_LOGIC (1 << 5)
> @@ -1132,6 +1139,8 @@
> #define DISABLE_EARLY_EOT REG_BIT(1)
>
> #define GEN7_ROW_CHICKEN2 _MMIO(0xe4f4)
> +
> +#define GEN8_ROW_CHICKEN2 _MMIO(0xe4f4)
> #define GEN12_DISABLE_READ_SUPPRESSION REG_BIT(15)
> #define GEN12_DISABLE_EARLY_READ REG_BIT(14)
> #define GEN12_ENABLE_LARGE_GRF_MODE REG_BIT(12)
> diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> index 6d2003d598e6..e382cb4c6971 100644
> --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> @@ -295,10 +295,10 @@ static void bdw_ctx_workarounds_init(struct
> intel_engine_cs *engine,
> * Also see the related UCGTCL1 write in bdw_init_clock_gating()
> * to disable EUTC clock gating.
> */
> - wa_masked_en(wal, GEN7_ROW_CHICKEN2,
> + wa_masked_en(wal, GEN8_ROW_CHICKEN2,
> DOP_CLOCK_GATING_DISABLE);
>
> - wa_masked_en(wal, HALF_SLICE_CHICKEN3,
> + wa_masked_en(wal, GEN8_HALF_SLICE_CHICKEN3,
> GEN8_SAMPLER_POWER_BYPASS_DIS);
>
> wa_masked_en(wal, HDC_CHICKEN0,
> @@ -386,7 +386,7 @@ static void gen9_ctx_workarounds_init(struct
> intel_engine_cs *engine,
> IS_KABYLAKE(i915) ||
> IS_COFFEELAKE(i915) ||
> IS_COMETLAKE(i915))
> - wa_masked_en(wal, HALF_SLICE_CHICKEN3,
> + wa_masked_en(wal, GEN8_HALF_SLICE_CHICKEN3,
> GEN8_SAMPLER_POWER_BYPASS_DIS);
>
> /* WaDisableSTUnitPowerOptimization:skl,bxt,kbl,glk,cfl */
> @@ -490,7 +490,7 @@ static void kbl_ctx_workarounds_init(struct
> intel_engine_cs *engine,
> GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION);
>
> /* WaDisableSbeCacheDispatchPortSharing:kbl */
> - wa_masked_en(wal, GEN7_HALF_SLICE_CHICKEN1,
> + wa_masked_en(wal, GEN8_HALF_SLICE_CHICKEN1,
> GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE);
> }
>
> @@ -514,7 +514,7 @@ static void cfl_ctx_workarounds_init(struct
> intel_engine_cs *engine,
> GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION);
>
> /* WaDisableSbeCacheDispatchPortSharing:cfl */
> - wa_masked_en(wal, GEN7_HALF_SLICE_CHICKEN1,
> + wa_masked_en(wal, GEN8_HALF_SLICE_CHICKEN1,
> GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE);
> }
>
> @@ -2107,7 +2107,7 @@ rcs_engine_wa_init(struct intel_engine_cs *engine,
> struct i915_wa_list *wal)
>
> if (IS_DG2_GRAPHICS_STEP(i915, G11, STEP_A0, STEP_B0)) {
> /* Wa_14013392000:dg2_g11 */
> - wa_masked_en(wal, GEN7_ROW_CHICKEN2,
> GEN12_ENABLE_LARGE_GRF_MODE);
> + wa_masked_en(wal, GEN8_ROW_CHICKEN2,
> GEN12_ENABLE_LARGE_GRF_MODE);
>
> /* Wa_16011620976:dg2_g11 */
> wa_write_or(wal, LSC_CHICKEN_BIT_0_UDW, DIS_CHAIN_2XSIMD8);
> @@ -2156,7 +2156,7 @@ rcs_engine_wa_init(struct intel_engine_cs *engine,
> struct i915_wa_list *wal)
> DISABLE_128B_EVICTION_COMMAND_UDW);
>
> /* Wa_22012856258:dg2 */
> - wa_masked_en(wal, GEN7_ROW_CHICKEN2,
> + wa_masked_en(wal, GEN8_ROW_CHICKEN2,
> GEN12_DISABLE_READ_SUPPRESSION);
>
> /*
> @@ -2253,7 +2253,7 @@ rcs_engine_wa_init(struct intel_engine_cs *engine,
> struct i915_wa_list *wal)
> if (IS_ALDERLAKE_P(i915) || IS_ALDERLAKE_S(i915) || IS_DG1(i915) ||
> IS_ROCKETLAKE(i915) || IS_TIGERLAKE(i915)) {
> /* Wa_1606931601:tgl,rkl,dg1,adl-s,adl-p */
> - wa_masked_en(wal, GEN7_ROW_CHICKEN2, GEN12_DISABLE_EARLY_READ);
> + wa_masked_en(wal, GEN8_ROW_CHICKEN2, GEN12_DISABLE_EARLY_READ);
>
> /*
> * Wa_1407928979:tgl A*
> @@ -2282,7 +2282,7 @@ rcs_engine_wa_init(struct intel_engine_cs *engine,
> struct i915_wa_list *wal)
> IS_DG1_GRAPHICS_STEP(i915, STEP_A0, STEP_B0) ||
> IS_ROCKETLAKE(i915) || IS_TIGERLAKE(i915)) {
> /* Wa_1409804808:tgl,rkl,dg1[a0],adl-s,adl-p */
> - wa_masked_en(wal, GEN7_ROW_CHICKEN2,
> + wa_masked_en(wal, GEN8_ROW_CHICKEN2,
> GEN12_PUSH_CONST_DEREF_HOLD_DIS);
>
> /*
> @@ -2449,7 +2449,7 @@ rcs_engine_wa_init(struct intel_engine_cs *engine,
> struct i915_wa_list *wal)
> if (IS_HASWELL(i915)) {
> /* WaSampleCChickenBitEnable:hsw */
> wa_masked_en(wal,
> - HALF_SLICE_CHICKEN3, HSW_SAMPLE_C_PERFORMANCE);
> + HSW_HALF_SLICE_CHICKEN3, HSW_SAMPLE_C_PERFORMANCE);
>
> wa_masked_dis(wal,
> CACHE_MODE_0_GEN7,
> @@ -2747,7 +2747,7 @@ general_render_compute_wa_init(struct intel_engine_cs
> *engine, struct i915_wa_li
> wa_write_or(wal, XEHP_L3NODEARBCFG, XEHP_LNESPARE);
>
> /* Wa_14010449647:xehpsdv */
> - wa_masked_en(wal, GEN7_HALF_SLICE_CHICKEN1,
> + wa_masked_en(wal, GEN8_HALF_SLICE_CHICKEN1,
> GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE);
>
> /* Wa_18011725039:xehpsdv */
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c
> b/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c
> index 8f1165146013..9495a7928bc8 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c
> @@ -244,8 +244,8 @@ struct __ext_steer_reg {
> };
>
> static const struct __ext_steer_reg xe_extregs[] = {
> - {"GEN7_SAMPLER_INSTDONE", GEN7_SAMPLER_INSTDONE},
> - {"GEN7_ROW_INSTDONE", GEN7_ROW_INSTDONE}
> + {"GEN8_SAMPLER_INSTDONE", GEN8_SAMPLER_INSTDONE},
> + {"GEN8_ROW_INSTDONE", GEN8_ROW_INSTDONE}
> };
>
> static void __fill_ext_reg(struct __guc_mmio_reg_descr *ext,
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c
> b/drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c
> index a0372735cddb..9229243992c2 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c
> @@ -35,7 +35,7 @@ static void guc_prepare_xfer(struct intel_uncore *uncore)
>
> if (GRAPHICS_VER(uncore->i915) == 9) {
> /* DOP Clock Gating Enable for GuC clocks */
> - intel_uncore_rmw(uncore, GEN7_MISCCPCTL,
> + intel_uncore_rmw(uncore, GEN8_MISCCPCTL,
> 0, GEN8_DOP_CLOCK_GATE_GUC_ENABLE);
>
> /* allows for 5us (in 10ns units) before GT can go to RC6 */
> diff --git a/drivers/gpu/drm/i915/gvt/handlers.c
> b/drivers/gpu/drm/i915/gvt/handlers.c
> index daac2050d77d..700cc9688f47 100644
> --- a/drivers/gpu/drm/i915/gvt/handlers.c
> +++ b/drivers/gpu/drm/i915/gvt/handlers.c
> @@ -2257,7 +2257,7 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
> MMIO_DFH(_MMIO(0x2438), D_ALL, F_CMD_ACCESS, NULL, NULL);
> MMIO_DFH(_MMIO(0x243c), D_ALL, F_CMD_ACCESS, NULL, NULL);
> MMIO_DFH(_MMIO(0x7018), D_ALL, F_MODE_MASK | F_CMD_ACCESS, NULL, NULL);
> - MMIO_DFH(HALF_SLICE_CHICKEN3, D_ALL, F_MODE_MASK | F_CMD_ACCESS, NULL,
> NULL);
> + MMIO_DFH(HSW_HALF_SLICE_CHICKEN3, D_ALL, F_MODE_MASK | F_CMD_ACCESS,
> NULL, NULL);
> MMIO_DFH(GEN7_HALF_SLICE_CHICKEN1, D_ALL, F_MODE_MASK | F_CMD_ACCESS,
> NULL, NULL);
>
> /* display */
> diff --git a/drivers/gpu/drm/i915/gvt/mmio_context.c
> b/drivers/gpu/drm/i915/gvt/mmio_context.c
> index 1c6e941c9666..ac58460fb305 100644
> --- a/drivers/gpu/drm/i915/gvt/mmio_context.c
> +++ b/drivers/gpu/drm/i915/gvt/mmio_context.c
> @@ -111,7 +111,7 @@ static struct engine_mmio gen9_engine_mmio_list[]
> __cacheline_aligned = {
> {RCS0, GEN9_SCRATCH_LNCF1, 0, false}, /* 0xb008 */
> {RCS0, GEN7_HALF_SLICE_CHICKEN1, 0xffff, true}, /* 0xe100 */
> {RCS0, HALF_SLICE_CHICKEN2, 0xffff, true}, /* 0xe180 */
> - {RCS0, HALF_SLICE_CHICKEN3, 0xffff, true}, /* 0xe184 */
> + {RCS0, HSW_HALF_SLICE_CHICKEN3, 0xffff, true}, /* 0xe184 */
> {RCS0, GEN9_HALF_SLICE_CHICKEN5, 0xffff, true}, /* 0xe188 */
> {RCS0, GEN9_HALF_SLICE_CHICKEN7, 0xffff, true}, /* 0xe194 */
> {RCS0, GEN8_ROW_CHICKEN, 0xffff, true}, /* 0xe4f0 */
> diff --git a/drivers/gpu/drm/i915/intel_gvt_mmio_table.c
> b/drivers/gpu/drm/i915/intel_gvt_mmio_table.c
> index 8279dc580a3e..638b77d64bf4 100644
> --- a/drivers/gpu/drm/i915/intel_gvt_mmio_table.c
> +++ b/drivers/gpu/drm/i915/intel_gvt_mmio_table.c
> @@ -102,7 +102,7 @@ static int iterate_generic_mmio(struct
> intel_gvt_mmio_table_iter *iter)
> MMIO_D(_MMIO(0x2438));
> MMIO_D(_MMIO(0x243c));
> MMIO_D(_MMIO(0x7018));
> - MMIO_D(HALF_SLICE_CHICKEN3);
> + MMIO_D(HSW_HALF_SLICE_CHICKEN3);
> MMIO_D(GEN7_HALF_SLICE_CHICKEN1);
> /* display */
> MMIO_F(_MMIO(0x60220), 0x20);
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 8f86f56e7ca4..1aa77b18fd3c 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -4325,8 +4325,8 @@ static void gen8_set_l3sqc_credits(struct
> drm_i915_private *dev_priv,
> u32 val;
>
> /* WaTempDisableDOPClkGating:bdw */
> - misccpctl = intel_uncore_read(&dev_priv->uncore, GEN7_MISCCPCTL);
> - intel_uncore_write(&dev_priv->uncore, GEN7_MISCCPCTL, misccpctl &
> ~GEN7_DOP_CLOCK_GATE_ENABLE);
> + misccpctl = intel_uncore_read(&dev_priv->uncore, GEN8_MISCCPCTL);
> + intel_uncore_write(&dev_priv->uncore, GEN8_MISCCPCTL, misccpctl &
> ~GEN8_DOP_CLOCK_GATE_ENABLE);
>
> val = intel_uncore_read(&dev_priv->uncore, GEN8_L3SQCREG1);
> val &= ~L3_PRIO_CREDITS_MASK;
> @@ -4340,7 +4340,7 @@ static void gen8_set_l3sqc_credits(struct
> drm_i915_private *dev_priv,
> */
> intel_uncore_posting_read(&dev_priv->uncore, GEN8_L3SQCREG1);
> udelay(1);
> - intel_uncore_write(&dev_priv->uncore, GEN7_MISCCPCTL, misccpctl);
> + intel_uncore_write(&dev_priv->uncore, GEN8_MISCCPCTL, misccpctl);
> }
>
> static void icl_init_clock_gating(struct drm_i915_private *dev_priv)
> @@ -4500,8 +4500,8 @@ static void skl_init_clock_gating(struct
> drm_i915_private *dev_priv)
> gen9_init_clock_gating(dev_priv);
>
> /* WaDisableDopClockGating:skl */
> - intel_uncore_write(&dev_priv->uncore, GEN7_MISCCPCTL,
> intel_uncore_read(&dev_priv->uncore, GEN7_MISCCPCTL) &
> - ~GEN7_DOP_CLOCK_GATE_ENABLE);
> + intel_uncore_write(&dev_priv->uncore, GEN8_MISCCPCTL,
> intel_uncore_read(&dev_priv->uncore, GEN8_MISCCPCTL) &
> + ~GEN8_DOP_CLOCK_GATE_ENABLE);
>
> /* WAC6entrylatency:skl */
> intel_uncore_write(&dev_priv->uncore, FBC_LLC_READ_CTRL,
> intel_uncore_read(&dev_priv->uncore, FBC_LLC_READ_CTRL) |
> --
> 2.37.3
>
