<div dir="ltr"><div dir="ltr"> </div> <div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jul 27, 2022 at 6:34 PM Radhakrishna Sripada <<a href="mailto:radhakrishna.sripada@intel.com">radhakrishna.sripada@intel.com</a>> wrote: </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">From Meteorlake, Latency Level, SAGV bloack time are read from LATENCY_SAGV register instead of the GT driver pcode mailbox. DDR type and QGV information are also tob read from Mem SS registers. Bspec: 49324, 64636 Cc: Matt Roper <<a href="mailto:matthew.d.roper@intel.com" target="_blank">matthew.d.roper@intel.com</a>> Original Author: Caz Yokoyama Signed-off-by: José Roberto de Souza <<a href="mailto:jose.souza@intel.com" target="_blank">jose.souza@intel.com</a>> Signed-off-by: Radhakrishna Sripada <<a href="mailto:radhakrishna.sripada@intel.com" target="_blank">radhakrishna.sripada@intel.com</a>> --- drivers/gpu/drm/i915/display/intel_bw.c | 49 +++++++++++++++++++------ drivers/gpu/drm/i915/display/intel_bw.h | 9 +++++ drivers/gpu/drm/i915/i915_reg.h | 16 ++++++++ drivers/gpu/drm/i915/intel_dram.c | 41 ++++++++++++++++++++- drivers/gpu/drm/i915/intel_pm.c | 8 +++- 5 files changed, 110 insertions(+), 13 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c index 79269d2c476b..8bbf47da1716 100644 --- a/drivers/gpu/drm/i915/display/intel_bw.c +++ b/drivers/gpu/drm/i915/display/intel_bw.c @@ -15,11 +15,6 @@ #include "intel_pcode.h" #include "intel_pm.h" -/* Parameters for Qclk Geyserville (QGV) */ -struct intel_qgv_point { - u16 dclk, t_rp, t_rdpre, t_rc, t_ras, t_rcd; -}; - struct intel_psf_gv_point { u8 clk; /* clock in multiples of 16.6666 MHz */ }; @@ -137,6 +132,42 @@ int icl_pcode_restrict_qgv_points(struct drm_i915_private *dev_priv, return 0; } +static int mtl_read_qgv_point_info(struct drm_i915_private *dev_priv, </blockquote><div>No need to return value. i.e.</div><div> </div><div>static void</div><div>mtl_read_qgv_point_info(struct drm_i915_private *dev_priv,</div><div>-caz</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> + struct intel_qgv_point *sp, int point) +{ + u32 val, val2; + u16 dclk; + + val = intel_uncore_read(&dev_priv->uncore, + MTL_MEM_SS_INFO_QGV_POINT(point, 0)); + val2 = intel_uncore_read(&dev_priv->uncore, + MTL_MEM_SS_INFO_QGV_POINT(point, 1)); + dclk = REG_FIELD_GET(MTL_DCLK_MASK, val); + sp->dclk = DIV_ROUND_UP((16667 * dclk) + 500, 1000); + sp->t_rp = REG_FIELD_GET(MTL_TRP_MASK, val); + sp->t_rcd = REG_FIELD_GET(MTL_TRCD_MASK, val); + + sp->t_rdpre = REG_FIELD_GET(MTL_TRDPRE_MASK, val2); + sp->t_ras = REG_FIELD_GET(MTL_TRAS_MASK, val2); + + sp->t_rc = sp->t_rp + sp->t_ras; + + return 0; +} + +int +intel_read_qgv_point_info(struct drm_i915_private *dev_priv, + struct intel_qgv_point *sp, + int point) +{ + if (DISPLAY_VER(dev_priv) >= 14) + return mtl_read_qgv_point_info(dev_priv, sp, point); + else if (IS_DG1(dev_priv)) + return dg1_mchbar_read_qgv_point_info(dev_priv, sp, point); + else + return icl_pcode_read_qgv_point_info(dev_priv, sp, point); +} + static int icl_get_qgv_points(struct drm_i915_private *dev_priv, struct intel_qgv_info *qi, bool is_y_tile) @@ -193,11 +224,7 @@ static int icl_get_qgv_points(struct drm_i915_private *dev_priv, for (i = 0; i < qi->num_points; i++) { struct intel_qgv_point *sp = &qi->points[i]; - if (IS_DG1(dev_priv)) - ret = dg1_mchbar_read_qgv_point_info(dev_priv, sp, i); - else - ret = icl_pcode_read_qgv_point_info(dev_priv, sp, i); - + ret = intel_read_qgv_point_info(dev_priv, sp, i); if (ret) return ret; @@ -560,7 +587,7 @@ void intel_bw_init_hw(struct drm_i915_private *dev_priv) if (IS_DG2(dev_priv)) dg2_get_bw_info(dev_priv); - else if (IS_ALDERLAKE_P(dev_priv)) + else if (DISPLAY_VER(dev_priv) >= 13 || IS_ALDERLAKE_P(dev_priv)) tgl_get_bw_info(dev_priv, &adlp_sa_info); else if (IS_ALDERLAKE_S(dev_priv)) tgl_get_bw_info(dev_priv, &adls_sa_info); diff --git a/drivers/gpu/drm/i915/display/intel_bw.h b/drivers/gpu/drm/i915/display/intel_bw.h index cb7ee3a24a58..b4c6665b0cf0 100644 --- a/drivers/gpu/drm/i915/display/intel_bw.h +++ b/drivers/gpu/drm/i915/display/intel_bw.h @@ -46,6 +46,11 @@ struct intel_bw_state { u8 num_active_planes[I915_MAX_PIPES]; }; +/* Parameters for Qclk Geyserville (QGV) */ +struct intel_qgv_point { + u16 dclk, t_rp, t_rdpre, t_rc, t_ras, t_rcd; +}; + #define to_intel_bw_state(x) container_of((x), struct intel_bw_state, base) struct intel_bw_state * @@ -69,4 +74,8 @@ int intel_bw_calc_min_cdclk(struct intel_atomic_state *state, int intel_bw_min_cdclk(struct drm_i915_private *i915, const struct intel_bw_state *bw_state); +int intel_read_qgv_point_info(struct drm_i915_private *dev_priv, + struct intel_qgv_point *sp, + int point); + #endif /* __INTEL_BW_H__ */ diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 23b50d671550..d37607109398 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -8761,4 +8761,20 @@ enum skl_power_gate { #define MTL_LATENCY_LEVEL0_2_4_MASK REG_GENMASK(12, 0) #define MTL_LATENCY_LEVEL1_3_5_MASK REG_GENMASK(28, 16) +#define MTL_LATENCY_SAGV _MMIO(0x4578c) +#define MTL_LATENCY_QCLK_SAGV REG_GENMASK(12, 0) + +#define MTL_MEM_SS_INFO_GLOBAL _MMIO(0x45700) +#define MTL_DDR_TYPE_MASK REG_GENMASK(3, 0) +#define MTL_N_OF_POPULATED_CH_MASK REG_GENMASK(7, 4) +#define MTL_N_OF_ENABLED_QGV_POINTS_MASK REG_GENMASK(11, 8) + +#define MTL_MEM_SS_INFO_QGV_POINT(point, bitgroup) \ + _MMIO(0x45710 + ((point) * 2 + (bitgroup)) * sizeof(u32)) +#define MTL_TRDPRE_MASK REG_GENMASK(7, 0) +#define MTL_TRAS_MASK REG_GENMASK(16, 8) +#define MTL_DCLK_MASK REG_GENMASK(15, 0) +#define MTL_TRP_MASK REG_GENMASK(23, 16) +#define MTL_TRCD_MASK REG_GENMASK(31, 24) + #endif /* _I915_REG_H_ */ diff --git a/drivers/gpu/drm/i915/intel_dram.c b/drivers/gpu/drm/i915/intel_dram.c index 437447119770..2403ccd52c74 100644 --- a/drivers/gpu/drm/i915/intel_dram.c +++ b/drivers/gpu/drm/i915/intel_dram.c @@ -466,6 +466,43 @@ static int gen12_get_dram_info(struct drm_i915_private *i915) return icl_pcode_read_mem_global_info(i915); } +static int xelpdp_get_dram_info(struct drm_i915_private *i915) +{ + u32 val = intel_uncore_read(&i915->uncore, MTL_MEM_SS_INFO_GLOBAL); + struct dram_info *dram_info = &i915->dram_info; + + val = REG_FIELD_GET(MTL_DDR_TYPE_MASK, val); + switch (val) { + case 0: + dram_info->type = INTEL_DRAM_DDR4; + break; + case 1: + dram_info->type = INTEL_DRAM_DDR5; + break; + case 2: + dram_info->type = INTEL_DRAM_LPDDR5; + break; + case 3: + dram_info->type = INTEL_DRAM_LPDDR4; + break; + case 4: + dram_info->type = INTEL_DRAM_DDR3; + break; + case 5: + dram_info->type = INTEL_DRAM_LPDDR3; + break; + default: + MISSING_CASE(val); + return -EINVAL; + } + + dram_info->num_channels = REG_FIELD_GET(MTL_N_OF_POPULATED_CH_MASK, val); + dram_info->num_qgv_points = REG_FIELD_GET(MTL_N_OF_ENABLED_QGV_POINTS_MASK, val); + /* PSF GV points not supported in D14+ */ + + return 0; +} + void intel_dram_detect(struct drm_i915_private *i915) { struct dram_info *dram_info = &i915->dram_info; @@ -480,7 +517,9 @@ void intel_dram_detect(struct drm_i915_private *i915) */ dram_info->wm_lv_0_adjust_needed = !IS_GEN9_LP(i915); - if (GRAPHICS_VER(i915) >= 12) + if (DISPLAY_VER(i915) >= 14) + ret = xelpdp_get_dram_info(i915); + else if (GRAPHICS_VER(i915) >= 12) ret = gen12_get_dram_info(i915); else if (GRAPHICS_VER(i915) >= 11) ret = gen11_get_dram_info(i915); diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index fac565d23d57..f71b3b8b590c 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3698,7 +3698,13 @@ intel_has_sagv(struct drm_i915_private *dev_priv) static u32 intel_sagv_block_time(struct drm_i915_private *dev_priv) { - if (DISPLAY_VER(dev_priv) >= 12) { + if (DISPLAY_VER(dev_priv) >= 14) { + u32 val; + + val = intel_uncore_read(&dev_priv->uncore, MTL_LATENCY_SAGV); + + return REG_FIELD_GET(MTL_LATENCY_QCLK_SAGV, val); + } else if (DISPLAY_VER(dev_priv) >= 12) { u32 val = 0; int ret; -- 2.25.1 </blockquote></div> <div> </div>-- <div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>-caz, caz at caztech dot com, 503-six one zero - five six nine nine(m) </div></div></div></div></div></div></div></div></div></div></div></div>