diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 164 |
1 files changed, 152 insertions, 12 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 09ac9e79830..0a07d7c9caf 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2291,7 +2291,9 @@ static uint32_t ilk_compute_fbc_wm(const struct hsw_pipe_wm_parameters *params, static unsigned int ilk_display_fifo_size(const struct drm_device *dev) { - if (INTEL_INFO(dev)->gen >= 7) + if (INTEL_INFO(dev)->gen >= 8) + return 3072; + else if (INTEL_INFO(dev)->gen >= 7) return 768; else return 512; @@ -2336,7 +2338,9 @@ static unsigned int ilk_plane_wm_max(const struct drm_device *dev, } /* clamp to max that the registers can hold */ - if (INTEL_INFO(dev)->gen >= 7) + if (INTEL_INFO(dev)->gen >= 8) + max = level == 0 ? 255 : 2047; + else if (INTEL_INFO(dev)->gen >= 7) /* IVB/HSW primary/sprite plane watermarks */ max = level == 0 ? 127 : 1023; else if (!is_sprite) @@ -2366,10 +2370,13 @@ static unsigned int ilk_cursor_wm_max(const struct drm_device *dev, } /* Calculate the maximum FBC watermark */ -static unsigned int ilk_fbc_wm_max(void) +static unsigned int ilk_fbc_wm_max(struct drm_device *dev) { /* max that registers can hold */ - return 15; + if (INTEL_INFO(dev)->gen >= 8) + return 31; + else + return 15; } static void ilk_compute_wm_maximums(struct drm_device *dev, @@ -2381,7 +2388,7 @@ static void ilk_compute_wm_maximums(struct drm_device *dev, max->pri = ilk_plane_wm_max(dev, level, config, ddb_partitioning, false); max->spr = ilk_plane_wm_max(dev, level, config, ddb_partitioning, true); max->cur = ilk_cursor_wm_max(dev, level, config); - max->fbc = ilk_fbc_wm_max(); + max->fbc = ilk_fbc_wm_max(dev); } static bool ilk_validate_wm_level(int level, @@ -2722,10 +2729,18 @@ static void hsw_compute_wm_results(struct drm_device *dev, if (!r->enable) break; - results->wm_lp[wm_lp - 1] = HSW_WM_LP_VAL(level * 2, - r->fbc_val, - r->pri_val, - r->cur_val); + results->wm_lp[wm_lp - 1] = WM3_LP_EN | + ((level * 2) << WM1_LP_LATENCY_SHIFT) | + (r->pri_val << WM1_LP_SR_SHIFT) | + r->cur_val; + + if (INTEL_INFO(dev)->gen >= 8) + results->wm_lp[wm_lp - 1] |= + r->fbc_val << WM1_LP_FBC_SHIFT_BDW; + else + results->wm_lp[wm_lp - 1] |= + r->fbc_val << WM1_LP_FBC_SHIFT; + results->wm_lp_spr[wm_lp - 1] = r->spr_val; } @@ -3747,6 +3762,78 @@ static void gen6_enable_rps_interrupts(struct drm_device *dev) I915_WRITE(GEN6_PMINTRMSK, ~enabled_intrs); } +static void gen8_enable_rps(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_ring_buffer *ring; + uint32_t rc6_mask = 0, rp_state_cap; + int unused; + + /* 1a: Software RC state - RC0 */ + I915_WRITE(GEN6_RC_STATE, 0); + + /* 1c & 1d: Get forcewake during program sequence. Although the driver + * hasn't enabled a state yet where we need forcewake, BIOS may have.*/ + gen6_gt_force_wake_get(dev_priv); + + /* 2a: Disable RC states. */ + I915_WRITE(GEN6_RC_CONTROL, 0); + + rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); + + /* 2b: Program RC6 thresholds.*/ + I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16); + I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */ + I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */ + for_each_ring(ring, dev_priv, unused) + I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); + I915_WRITE(GEN6_RC_SLEEP, 0); + I915_WRITE(GEN6_RC6_THRESHOLD, 50000); /* 50/125ms per EI */ + + /* 3: Enable RC6 */ + if (intel_enable_rc6(dev) & INTEL_RC6_ENABLE) + rc6_mask = GEN6_RC_CTL_RC6_ENABLE; + DRM_INFO("RC6 %s\n", (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ? "on" : "off"); + I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | + GEN6_RC_CTL_EI_MODE(1) | + rc6_mask); + + /* 4 Program defaults and thresholds for RPS*/ + I915_WRITE(GEN6_RPNSWREQ, HSW_FREQUENCY(10)); /* Request 500 MHz */ + I915_WRITE(GEN6_RC_VIDEO_FREQ, HSW_FREQUENCY(12)); /* Request 600 MHz */ + /* NB: Docs say 1s, and 1000000 - which aren't equivalent */ + I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 100000000 / 128); /* 1 second timeout */ + + /* Docs recommend 900MHz, and 300 MHz respectively */ + I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, + dev_priv->rps.max_delay << 24 | + dev_priv->rps.min_delay << 16); + + I915_WRITE(GEN6_RP_UP_THRESHOLD, 7600000 / 128); /* 76ms busyness per EI, 90% */ + I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 31300000 / 128); /* 313ms busyness per EI, 70%*/ + I915_WRITE(GEN6_RP_UP_EI, 66000); /* 84.48ms, XXX: random? */ + I915_WRITE(GEN6_RP_DOWN_EI, 350000); /* 448ms, XXX: random? */ + + I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); + + /* 5: Enable RPS */ + I915_WRITE(GEN6_RP_CONTROL, + GEN6_RP_MEDIA_TURBO | + GEN6_RP_MEDIA_HW_NORMAL_MODE | + GEN6_RP_MEDIA_IS_GFX | + GEN6_RP_ENABLE | + GEN6_RP_UP_BUSY_AVG | + GEN6_RP_DOWN_IDLE_AVG); + + /* 6: Ring frequency + overclocking (our driver does this later */ + + gen6_set_rps(dev, (I915_READ(GEN6_GT_PERF_STATUS) & 0xff00) >> 8); + + gen6_enable_rps_interrupts(dev); + + gen6_gt_force_wake_put(dev_priv); +} + static void gen6_enable_rps(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -3909,7 +3996,10 @@ void gen6_update_ring_freq(struct drm_device *dev) int diff = dev_priv->rps.max_delay - gpu_freq; unsigned int ia_freq = 0, ring_freq = 0; - if (IS_HASWELL(dev)) { + if (INTEL_INFO(dev)->gen >= 8) { + /* max(2 * GT, DDR). NB: GT is 50MHz units */ + ring_freq = max(min_ring_freq, gpu_freq); + } else if (IS_HASWELL(dev)) { ring_freq = mult_frac(gpu_freq, 5, 4); ring_freq = max(min_ring_freq, ring_freq); /* leave ia_freq as the default, chosen by cpufreq */ @@ -4873,6 +4963,9 @@ static void intel_gen6_powersave_work(struct work_struct *work) if (IS_VALLEYVIEW(dev)) { valleyview_enable_rps(dev); + } else if (IS_BROADWELL(dev)) { + gen8_enable_rps(dev); + gen6_update_ring_freq(dev); } else { gen6_enable_rps(dev); gen6_update_ring_freq(dev); @@ -5181,6 +5274,50 @@ static void lpt_suspend_hw(struct drm_device *dev) } } +static void gen8_init_clock_gating(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + enum pipe i; + + I915_WRITE(WM3_LP_ILK, 0); + I915_WRITE(WM2_LP_ILK, 0); + I915_WRITE(WM1_LP_ILK, 0); + + /* FIXME(BDW): Check all the w/a, some might only apply to + * pre-production hw. */ + + WARN(!i915_preliminary_hw_support, + "GEN8_CENTROID_PIXEL_OPT_DIS not be needed for production\n"); + I915_WRITE(HALF_SLICE_CHICKEN3, + _MASKED_BIT_ENABLE(GEN8_CENTROID_PIXEL_OPT_DIS)); + I915_WRITE(HALF_SLICE_CHICKEN3, + _MASKED_BIT_ENABLE(GEN8_SAMPLER_POWER_BYPASS_DIS)); + I915_WRITE(GAMTARBMODE, _MASKED_BIT_ENABLE(ARB_MODE_BWGTLB_DISABLE)); + + I915_WRITE(_3D_CHICKEN3, + _3D_CHICKEN_SDE_LIMIT_FIFO_POLY_DEPTH(2)); + + I915_WRITE(COMMON_SLICE_CHICKEN2, + _MASKED_BIT_ENABLE(GEN8_CSC2_SBE_VUE_CACHE_CONSERVATIVE)); + + I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, + _MASKED_BIT_ENABLE(GEN7_SINGLE_SUBSCAN_DISPATCH_ENABLE)); + + /* WaSwitchSolVfFArbitrationPriority */ + I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); + + /* WaPsrDPAMaskVBlankInSRD */ + I915_WRITE(CHICKEN_PAR1_1, + I915_READ(CHICKEN_PAR1_1) | DPA_MASK_VBLANK_SRD); + + /* WaPsrDPRSUnmaskVBlankInSRD */ + for_each_pipe(i) { + I915_WRITE(CHICKEN_PIPESL_1(i), + I915_READ(CHICKEN_PIPESL_1(i) | + DPRS_MASK_VBLANK_SRD)); + } +} + static void haswell_init_clock_gating(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -5511,7 +5648,9 @@ static bool is_always_on_power_domain(struct drm_device *dev, BUG_ON(BIT(domain) & ~POWER_DOMAIN_MASK); - if (IS_HASWELL(dev)) { + if (IS_BROADWELL(dev)) { + always_on_domains = BDW_ALWAYS_ON_POWER_DOMAINS; + } else if (IS_HASWELL(dev)) { always_on_domains = HSW_ALWAYS_ON_POWER_DOMAINS; } else { WARN_ON(1); @@ -5833,6 +5972,8 @@ void intel_init_pm(struct drm_device *dev) dev_priv->display.update_wm = NULL; } dev_priv->display.init_clock_gating = haswell_init_clock_gating; + } else if (INTEL_INFO(dev)->gen == 8) { + dev_priv->display.init_clock_gating = gen8_init_clock_gating; } else dev_priv->display.update_wm = NULL; } else if (IS_VALLEYVIEW(dev)) { @@ -5995,4 +6136,3 @@ void intel_pm_init(struct drm_device *dev) INIT_DELAYED_WORK(&dev_priv->rps.delayed_resume_work, intel_gen6_powersave_work); } - |