From c8c8fb33b37766acf6474784b0d5245dab9a1690 Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Wed, 27 Nov 2013 18:21:54 -0200 Subject: [PATCH] drm/i915: add some runtime PM get/put calls These are needed when we cat the debugfs and sysfs files. V2: - Rebase V3: - Rebase V4: - Rebase Signed-off-by: Paulo Zanoni Reviewed-by: Rodrigo Vivi Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_debugfs.c | 45 +++++++++++++++++++++++++++-- drivers/gpu/drm/i915/i915_sysfs.c | 14 +++++++-- drivers/gpu/drm/i915/intel_dp.c | 11 +++++-- drivers/gpu/drm/i915/intel_panel.c | 3 ++ drivers/gpu/drm/i915/intel_uncore.c | 4 +++ 5 files changed, 70 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 13accf795548..6badc1596ceb 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -564,10 +564,12 @@ static int i915_gem_seqno_info(struct seq_file *m, void *data) ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) return ret; + intel_runtime_pm_get(dev_priv); for_each_ring(ring, dev_priv, i) i915_ring_seqno_info(m, ring); + intel_runtime_pm_put(dev_priv); mutex_unlock(&dev->struct_mutex); return 0; @@ -585,6 +587,7 @@ static int i915_interrupt_info(struct seq_file *m, void *data) ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) return ret; + intel_runtime_pm_get(dev_priv); if (INTEL_INFO(dev)->gen >= 8) { int i; @@ -711,6 +714,7 @@ static int i915_interrupt_info(struct seq_file *m, void *data) } i915_ring_seqno_info(m, ring); } + intel_runtime_pm_put(dev_priv); mutex_unlock(&dev->struct_mutex); return 0; @@ -904,9 +908,11 @@ static int i915_rstdby_delays(struct seq_file *m, void *unused) ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) return ret; + intel_runtime_pm_get(dev_priv); crstanddelay = I915_READ16(CRSTANDVID); + intel_runtime_pm_put(dev_priv); mutex_unlock(&dev->struct_mutex); seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f)); @@ -919,7 +925,9 @@ static int i915_cur_delayinfo(struct seq_file *m, void *unused) struct drm_info_node *node = (struct drm_info_node *) m->private; struct drm_device *dev = node->minor->dev; drm_i915_private_t *dev_priv = dev->dev_private; - int ret; + int ret = 0; + + intel_runtime_pm_get(dev_priv); flush_delayed_work(&dev_priv->rps.delayed_resume_work); @@ -945,7 +953,7 @@ static int i915_cur_delayinfo(struct seq_file *m, void *unused) /* RPSTAT1 is in the GT power well */ ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) - return ret; + goto out; gen6_gt_force_wake_get(dev_priv, FORCEWAKE_ALL); @@ -1033,7 +1041,9 @@ static int i915_cur_delayinfo(struct seq_file *m, void *unused) seq_puts(m, "no P-state info available\n"); } - return 0; +out: + intel_runtime_pm_put(dev_priv); + return ret; } static int i915_delayfreq_table(struct seq_file *m, void *unused) @@ -1047,6 +1057,7 @@ static int i915_delayfreq_table(struct seq_file *m, void *unused) ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) return ret; + intel_runtime_pm_get(dev_priv); for (i = 0; i < 16; i++) { delayfreq = I915_READ(PXVFREQ_BASE + i * 4); @@ -1054,6 +1065,8 @@ static int i915_delayfreq_table(struct seq_file *m, void *unused) (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT); } + intel_runtime_pm_put(dev_priv); + mutex_unlock(&dev->struct_mutex); return 0; @@ -1075,12 +1088,14 @@ static int i915_inttoext_table(struct seq_file *m, void *unused) ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) return ret; + intel_runtime_pm_get(dev_priv); for (i = 1; i <= 32; i++) { inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4); seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext); } + intel_runtime_pm_put(dev_priv); mutex_unlock(&dev->struct_mutex); return 0; @@ -1098,11 +1113,13 @@ static int ironlake_drpc_info(struct seq_file *m) ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) return ret; + intel_runtime_pm_get(dev_priv); rgvmodectl = I915_READ(MEMMODECTL); rstdbyctl = I915_READ(RSTDBYCTL); crstandvid = I915_READ16(CRSTANDVID); + intel_runtime_pm_put(dev_priv); mutex_unlock(&dev->struct_mutex); seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ? @@ -1166,6 +1183,7 @@ static int gen6_drpc_info(struct seq_file *m) ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) return ret; + intel_runtime_pm_get(dev_priv); spin_lock_irq(&dev_priv->uncore.lock); forcewake_count = dev_priv->uncore.forcewake_count; @@ -1191,6 +1209,8 @@ static int gen6_drpc_info(struct seq_file *m) sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids); mutex_unlock(&dev_priv->rps.hw_lock); + intel_runtime_pm_put(dev_priv); + seq_printf(m, "Video Turbo Mode: %s\n", yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO)); seq_printf(m, "HW control enabled: %s\n", @@ -1405,6 +1425,7 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused) ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock); if (ret) return ret; + intel_runtime_pm_get(dev_priv); seq_puts(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\tEffective Ring freq (MHz)\n"); @@ -1421,6 +1442,7 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused) ((ia_freq >> 8) & 0xff) * 100); } + intel_runtime_pm_put(dev_priv); mutex_unlock(&dev_priv->rps.hw_lock); return 0; @@ -1436,8 +1458,10 @@ static int i915_gfxec(struct seq_file *m, void *unused) ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) return ret; + intel_runtime_pm_get(dev_priv); seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4)); + intel_runtime_pm_put(dev_priv); mutex_unlock(&dev->struct_mutex); @@ -1617,6 +1641,7 @@ static int i915_swizzle_info(struct seq_file *m, void *data) ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) return ret; + intel_runtime_pm_get(dev_priv); seq_printf(m, "bit6 swizzle for X-tiling = %s\n", swizzle_string(dev_priv->mm.bit_6_swizzle_x)); @@ -1648,6 +1673,7 @@ static int i915_swizzle_info(struct seq_file *m, void *data) seq_printf(m, "DISP_ARB_CTL = 0x%08x\n", I915_READ(DISP_ARB_CTL)); } + intel_runtime_pm_put(dev_priv); mutex_unlock(&dev->struct_mutex); return 0; @@ -1708,16 +1734,19 @@ static int i915_ppgtt_info(struct seq_file *m, void *data) { struct drm_info_node *node = (struct drm_info_node *) m->private; struct drm_device *dev = node->minor->dev; + struct drm_i915_private *dev_priv = dev->dev_private; int ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) return ret; + intel_runtime_pm_get(dev_priv); if (INTEL_INFO(dev)->gen >= 8) gen8_ppgtt_info(m, dev); else if (INTEL_INFO(dev)->gen >= 6) gen6_ppgtt_info(m, dev); + intel_runtime_pm_put(dev_priv); mutex_unlock(&dev->struct_mutex); return 0; @@ -1791,6 +1820,8 @@ static int i915_edp_psr_status(struct seq_file *m, void *data) u32 psrperf = 0; bool enabled = false; + intel_runtime_pm_get(dev_priv); + seq_printf(m, "Sink_Support: %s\n", yesno(dev_priv->psr.sink_support)); seq_printf(m, "Source_OK: %s\n", yesno(dev_priv->psr.source_ok)); @@ -1803,6 +1834,7 @@ static int i915_edp_psr_status(struct seq_file *m, void *data) EDP_PSR_PERF_CNT_MASK; seq_printf(m, "Performance_Counter: %u\n", psrperf); + intel_runtime_pm_put(dev_priv); return 0; } @@ -3016,8 +3048,11 @@ i915_cache_sharing_get(void *data, u64 *val) ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) return ret; + intel_runtime_pm_get(dev_priv); snpcr = I915_READ(GEN6_MBCUNIT_SNPCR); + + intel_runtime_pm_put(dev_priv); mutex_unlock(&dev_priv->dev->struct_mutex); *val = (snpcr & GEN6_MBC_SNPCR_MASK) >> GEN6_MBC_SNPCR_SHIFT; @@ -3038,6 +3073,7 @@ i915_cache_sharing_set(void *data, u64 val) if (val > 3) return -EINVAL; + intel_runtime_pm_get(dev_priv); DRM_DEBUG_DRIVER("Manually setting uncore sharing to %llu\n", val); /* Update the cache sharing policy here as well */ @@ -3046,6 +3082,7 @@ i915_cache_sharing_set(void *data, u64 val) snpcr |= (val << GEN6_MBC_SNPCR_SHIFT); I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr); + intel_runtime_pm_put(dev_priv); return 0; } @@ -3061,6 +3098,7 @@ static int i915_forcewake_open(struct inode *inode, struct file *file) if (INTEL_INFO(dev)->gen < 6) return 0; + intel_runtime_pm_get(dev_priv); gen6_gt_force_wake_get(dev_priv, FORCEWAKE_ALL); return 0; @@ -3075,6 +3113,7 @@ static int i915_forcewake_release(struct inode *inode, struct file *file) return 0; gen6_gt_force_wake_put(dev_priv, FORCEWAKE_ALL); + intel_runtime_pm_put(dev_priv); return 0; } diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c index 05d8b1680c22..33bcae314bf8 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.c +++ b/drivers/gpu/drm/i915/i915_sysfs.c @@ -40,10 +40,13 @@ static u32 calc_residency(struct drm_device *dev, const u32 reg) struct drm_i915_private *dev_priv = dev->dev_private; u64 raw_time; /* 32b value may overflow during fixed point math */ u64 units = 128ULL, div = 100000ULL, bias = 100ULL; + u32 ret; if (!intel_enable_rc6(dev)) return 0; + intel_runtime_pm_get(dev_priv); + /* On VLV, residency time is in CZ units rather than 1.28us */ if (IS_VALLEYVIEW(dev)) { u32 clkctl2; @@ -52,7 +55,8 @@ static u32 calc_residency(struct drm_device *dev, const u32 reg) CLK_CTL2_CZCOUNT_30NS_SHIFT; if (!clkctl2) { WARN(!clkctl2, "bogus CZ count value"); - return 0; + ret = 0; + goto out; } units = DIV_ROUND_UP_ULL(30ULL * bias, (u64)clkctl2); if (I915_READ(VLV_COUNTER_CONTROL) & VLV_COUNT_RANGE_HIGH) @@ -62,7 +66,11 @@ static u32 calc_residency(struct drm_device *dev, const u32 reg) } raw_time = I915_READ(reg) * units; - return DIV_ROUND_UP_ULL(raw_time, div); + ret = DIV_ROUND_UP_ULL(raw_time, div); + +out: + intel_runtime_pm_put(dev_priv); + return ret; } static ssize_t @@ -448,7 +456,9 @@ static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) return ret; + intel_runtime_pm_get(dev_priv); rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); + intel_runtime_pm_put(dev_priv); mutex_unlock(&dev->struct_mutex); if (attr == &dev_attr_gt_RP0_freq_mhz) { diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index f3b17b11b270..a01264234bf0 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -3072,9 +3072,12 @@ intel_dp_detect(struct drm_connector *connector, bool force) struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); struct intel_encoder *intel_encoder = &intel_dig_port->base; struct drm_device *dev = connector->dev; + struct drm_i915_private *dev_priv = dev->dev_private; enum drm_connector_status status; struct edid *edid = NULL; + intel_runtime_pm_get(dev_priv); + DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, drm_get_connector_name(connector)); @@ -3086,7 +3089,7 @@ intel_dp_detect(struct drm_connector *connector, bool force) status = g4x_dp_detect(intel_dp); if (status != connector_status_connected) - return status; + goto out; intel_dp_probe_oui(intel_dp); @@ -3102,7 +3105,11 @@ intel_dp_detect(struct drm_connector *connector, bool force) if (intel_encoder->type != INTEL_OUTPUT_EDP) intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; - return connector_status_connected; + status = connector_status_connected; + +out: + intel_runtime_pm_put(dev_priv); + return status; } static int intel_dp_get_modes(struct drm_connector *connector) diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index b0f6e6cc4354..20ebc3e83d39 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -845,11 +845,14 @@ static int intel_backlight_device_get_brightness(struct backlight_device *bd) { struct intel_connector *connector = bl_get_data(bd); struct drm_device *dev = connector->base.dev; + struct drm_i915_private *dev_priv = dev->dev_private; int ret; + intel_runtime_pm_get(dev_priv); mutex_lock(&dev->mode_config.mutex); ret = intel_panel_get_backlight(connector); mutex_unlock(&dev->mode_config.mutex); + intel_runtime_pm_put(dev_priv); return ret; } diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index 0c4c302aa38c..8102af9a178d 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -370,6 +370,8 @@ void gen6_gt_force_wake_get(struct drm_i915_private *dev_priv, int fw_engine) if (!dev_priv->uncore.funcs.force_wake_get) return; + intel_runtime_pm_get(dev_priv); + /* Redirect to VLV specific routine */ if (IS_VALLEYVIEW(dev_priv->dev)) return vlv_force_wake_get(dev_priv, fw_engine); @@ -403,6 +405,8 @@ void gen6_gt_force_wake_put(struct drm_i915_private *dev_priv, int fw_engine) 1); } spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); + + intel_runtime_pm_put(dev_priv); } /* We give fast paths for the really cool registers */ -- 2.20.1