From 53615a5e129534fa161e882fc3c1c4f269166b76 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Thu, 1 Aug 2013 16:18:50 +0300 Subject: [PATCH] drm/i915: Store the watermark latency values in dev_priv MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Rather than having to read the latency values out every time, just store them in dev_priv. On ILK and IVB there is a difference between some of the latency values for different planes, so store the latency values for each plane type separately, and apply the necesary fixups during init. v2: Fix some checkpatch complaints Signed-off-by: Ville Syrjälä Reviewed-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.h | 14 ++++++++++ drivers/gpu/drm/i915/intel_pm.c | 62 +++++++++++++++++++++++++++++++++++------ 2 files changed, 67 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index a8b51d5..da1827a 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1216,6 +1216,20 @@ typedef struct drm_i915_private { struct i915_suspend_saved_registers regfile; + struct { + /* + * Raw watermark latency values: + * in 0.1us units for WM0, + * in 0.5us units for WM1+. + */ + /* primary */ + uint16_t pri_latency[5]; + /* sprite */ + uint16_t spr_latency[5]; + /* cursor */ + uint16_t cur_latency[5]; + } wm; + /* Old dri1 support infrastructure, beware the dragons ya fools entering * here! */ struct i915_dri1_state dri1; diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index e5e0fb2..87db1f0 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2382,6 +2382,39 @@ static void intel_read_wm_latency(struct drm_device *dev, uint16_t wm[5]) } } +static void intel_fixup_spr_wm_latency(struct drm_device *dev, uint16_t wm[5]) +{ + /* ILK sprite LP0 latency is 1300 ns */ + if (INTEL_INFO(dev)->gen == 5) + wm[0] = 13; +} + +static void intel_fixup_cur_wm_latency(struct drm_device *dev, uint16_t wm[5]) +{ + /* ILK cursor LP0 latency is 1300 ns */ + if (INTEL_INFO(dev)->gen == 5) + wm[0] = 13; + + /* WaDoubleCursorLP3Latency:ivb */ + if (IS_IVYBRIDGE(dev)) + wm[3] *= 2; +} + +static void intel_setup_wm_latency(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + + intel_read_wm_latency(dev, dev_priv->wm.pri_latency); + + memcpy(dev_priv->wm.spr_latency, dev_priv->wm.pri_latency, + sizeof(dev_priv->wm.pri_latency)); + memcpy(dev_priv->wm.cur_latency, dev_priv->wm.pri_latency, + sizeof(dev_priv->wm.pri_latency)); + + intel_fixup_spr_wm_latency(dev, dev_priv->wm.spr_latency); + intel_fixup_cur_wm_latency(dev, dev_priv->wm.cur_latency); +} + static void hsw_compute_wm_parameters(struct drm_device *dev, struct hsw_pipe_wm_parameters *params, struct hsw_wm_maximums *lp_max_1_2, @@ -2627,16 +2660,17 @@ static void haswell_update_wm(struct drm_device *dev) struct hsw_wm_maximums lp_max_1_2, lp_max_5_6; struct hsw_pipe_wm_parameters params[3]; struct hsw_wm_values results_1_2, results_5_6, *best_results; - uint16_t wm[5] = {}; enum hsw_data_buf_partitioning partitioning; - intel_read_wm_latency(dev, wm); hsw_compute_wm_parameters(dev, params, &lp_max_1_2, &lp_max_5_6); - hsw_compute_wm_results(dev, params, wm, &lp_max_1_2, &results_1_2); + hsw_compute_wm_results(dev, params, + dev_priv->wm.pri_latency, + &lp_max_1_2, &results_1_2); if (lp_max_1_2.pri != lp_max_5_6.pri) { - hsw_compute_wm_results(dev, params, wm, &lp_max_5_6, - &results_5_6); + hsw_compute_wm_results(dev, params, + dev_priv->wm.pri_latency, + &lp_max_5_6, &results_5_6); best_results = hsw_find_best_result(&results_1_2, &results_5_6); } else { best_results = &results_1_2; @@ -5229,8 +5263,12 @@ void intel_init_pm(struct drm_device *dev) /* For FIFO watermark updates */ if (HAS_PCH_SPLIT(dev)) { + intel_setup_wm_latency(dev); + if (IS_GEN5(dev)) { - if (I915_READ(MLTR_ILK) & ILK_SRLT_MASK) + if (dev_priv->wm.pri_latency[1] && + dev_priv->wm.spr_latency[1] && + dev_priv->wm.cur_latency[1]) dev_priv->display.update_wm = ironlake_update_wm; else { DRM_DEBUG_KMS("Failed to get proper latency. " @@ -5239,7 +5277,9 @@ void intel_init_pm(struct drm_device *dev) } dev_priv->display.init_clock_gating = ironlake_init_clock_gating; } else if (IS_GEN6(dev)) { - if (SNB_READ_WM0_LATENCY()) { + if (dev_priv->wm.pri_latency[0] && + dev_priv->wm.spr_latency[0] && + dev_priv->wm.cur_latency[0]) { dev_priv->display.update_wm = sandybridge_update_wm; dev_priv->display.update_sprite_wm = sandybridge_update_sprite_wm; } else { @@ -5249,7 +5289,9 @@ void intel_init_pm(struct drm_device *dev) } dev_priv->display.init_clock_gating = gen6_init_clock_gating; } else if (IS_IVYBRIDGE(dev)) { - if (SNB_READ_WM0_LATENCY()) { + if (dev_priv->wm.pri_latency[0] && + dev_priv->wm.spr_latency[0] && + dev_priv->wm.cur_latency[0]) { dev_priv->display.update_wm = ivybridge_update_wm; dev_priv->display.update_sprite_wm = sandybridge_update_sprite_wm; } else { @@ -5259,7 +5301,9 @@ void intel_init_pm(struct drm_device *dev) } dev_priv->display.init_clock_gating = ivybridge_init_clock_gating; } else if (IS_HASWELL(dev)) { - if (I915_READ64(MCH_SSKPD)) { + if (dev_priv->wm.pri_latency[0] && + dev_priv->wm.spr_latency[0] && + dev_priv->wm.cur_latency[0]) { dev_priv->display.update_wm = haswell_update_wm; dev_priv->display.update_sprite_wm = haswell_update_sprite_wm; -- 2.7.4