Merge tag 'drm-intel-next-2016-04-25' of git://anongit.freedesktop.or…

…g/drm-intel into drm-next

- more userptr cornercase fixes from Chris
- clean up and tune forcewake handling (Tvrtko)
- more underrun fixes from Ville, mostly for ilk to appeas CI
- fix unclaimed register warnings on vlv/chv and enable the debug code to catch
  them by default (Ville)
- skl gpu hang fixes for gt3/4 (Mika Kuoppala)
- edram improvements for gen9+ (Mika again)
- clean up gpu reset corner cases (Chris)
- fix ctx/ring machine deaths on snb/ilk (Chris)
- MOCS programming for all engines (Peter Antoine)
- robustify/clean up vlv/chv irq handler (Ville)
- split gen8+ irq handlers into ack/handle phase (Ville)
- tons of bxt rpm fixes (mostly around firmware interactions), from Imre
- hook up panel fitting for dsi panels (Ville)
- more runtime PM fixes all over from Imre
- shrinker polish (Chris)
- more guc fixes from Alex Dai and Dave Gordon
- tons of bugfixes and small polish all over (but with a big focus on bxt)

* tag 'drm-intel-next-2016-04-25' of git://anongit.freedesktop.org/drm-intel: (142 commits)
  drm/i915: Update DRIVER_DATE to 20160425
  drm/i915/bxt: Explicitly clear the Turbo control register
  drm/i915: Correct the i915_frequency_info debugfs output
  drm/i915: Macros to convert PM time interval values to microseconds
  drm/i915: Make RPS EI/thresholds multiple of 25 on SNB-BDW
  drm/i915: Fake HDMI live status
  drm/i915/bxt: Force reprogramming a PHY with invalid HW state
  drm/i915/bxt: Wait for PHY1 GRC done if PHY0 was already enabled
  drm/i915/bxt: Use PHY0 GRC value for HW state verification
  drm/i915: use dev_priv directly in gen8_ppgtt_notify_vgt
  drm/i915/bxt: Enable DC5 during runtime resume
  drm/i915/bxt: Sanitize DC state tracking during system resume
  drm/i915/bxt: Don't uninit/init display core twice during system suspend/resume
  drm/i915: Inline intel_suspend_complete
  drm/i915/kbl: Don't WARN for expected secondary MISC IO power well request
  drm/i915: Fix eDP low vswing for Broadwell
  drm/i915: check for ERR_PTR from i915_gem_object_pin_map()
  drm/i915/guc: local optimisations and updating comments
  drm/i915/guc: drop cached copy of 'wq_head'
  drm/i915/guc: keep GuC doorbell & process descriptor mapped in kernel
  ...

drivers/gpu/drm/i915/Kconfig.debug

@@ -1,3 +1,20 @@
+config DRM_I915_WERROR
+        bool "Force GCC to throw an error instead of a warning when compiling"
+        # As this may inadvertently break the build, only allow the user
+        # to shoot oneself in the foot iff they aim really hard
+        depends on EXPERT
+        # We use the dependency on !COMPILE_TEST to not be enabled in
+        # allmodconfig or allyesconfig configurations
+        depends on !COMPILE_TEST
+        default n
+        help
+          Add -Werror to the build flags for (and only for) i915.ko.
+          Do not enable this unless you are writing code for the i915.ko module.
+
+          Recommended for driver developers only.
+
+          If in doubt, say "N".
+
 config DRM_I915_DEBUG
         bool "Enable additional driver debugging"
         depends on DRM_I915
@@ -10,3 +27,15 @@ config DRM_I915_DEBUG
 
           If in doubt, say "N".
 
+config DRM_I915_DEBUG_GEM
+        bool "Insert extra checks into the GEM internals"
+        default n
+        depends on DRM_I915_WERROR
+        help
+          Enable extra sanity checks (including BUGs) along the GEM driver
+          paths that may slow the system down and if hit hang the machine.
+
+          Recommended for driver developers only.
+
+          If in doubt, say "N".
+

drivers/gpu/drm/i915/Makefile

@@ -2,6 +2,8 @@
 # Makefile for the drm device driver.  This driver provides support for the
 # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
 
+subdir-ccflags-$(CONFIG_DRM_I915_WERROR) := -Werror
+
 # Please keep these build lists sorted!
 
 # core driver code

drivers/gpu/drm/i915/i915_debugfs.c

@@ -89,27 +89,34 @@ static int i915_capabilities(struct seq_file *m, void *data)
 	return 0;
 }
 
-static const char *get_pin_flag(struct drm_i915_gem_object *obj)
+static const char get_active_flag(struct drm_i915_gem_object *obj)
 {
-	if (obj->pin_display)
-		return "p";
-	else
-		return " ";
+	return obj->active ? '*' : ' ';
 }
 
-static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
+static const char get_pin_flag(struct drm_i915_gem_object *obj)
+{
+	return obj->pin_display ? 'p' : ' ';
+}
+
+static const char get_tiling_flag(struct drm_i915_gem_object *obj)
 {
 	switch (obj->tiling_mode) {
 	default:
-	case I915_TILING_NONE: return " ";
-	case I915_TILING_X: return "X";
-	case I915_TILING_Y: return "Y";
+	case I915_TILING_NONE: return ' ';
+	case I915_TILING_X: return 'X';
+	case I915_TILING_Y: return 'Y';
 	}
 }
 
-static inline const char *get_global_flag(struct drm_i915_gem_object *obj)
+static inline const char get_global_flag(struct drm_i915_gem_object *obj)
 {
-	return i915_gem_obj_to_ggtt(obj) ? "g" : " ";
+	return i915_gem_obj_to_ggtt(obj) ? 'g' : ' ';
+}
+
+static inline const char get_pin_mapped_flag(struct drm_i915_gem_object *obj)
+{
+	return obj->mapping ? 'M' : ' ';
 }
 
 static u64 i915_gem_obj_total_ggtt_size(struct drm_i915_gem_object *obj)
@@ -136,12 +143,13 @@ describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 
 	lockdep_assert_held(&obj->base.dev->struct_mutex);
 
-	seq_printf(m, "%pK: %s%s%s%s %8zdKiB %02x %02x [ ",
+	seq_printf(m, "%pK: %c%c%c%c%c %8zdKiB %02x %02x [ ",
 		   &obj->base,
-		   obj->active ? "*" : " ",
+		   get_active_flag(obj),
 		   get_pin_flag(obj),
 		   get_tiling_flag(obj),
 		   get_global_flag(obj),
+		   get_pin_mapped_flag(obj),
 		   obj->base.size / 1024,
 		   obj->base.read_domains,
 		   obj->base.write_domain);
@@ -435,6 +443,8 @@ static int i915_gem_object_info(struct seq_file *m, void* data)
 	struct i915_ggtt *ggtt = &dev_priv->ggtt;
 	u32 count, mappable_count, purgeable_count;
 	u64 size, mappable_size, purgeable_size;
+	unsigned long pin_mapped_count = 0, pin_mapped_purgeable_count = 0;
+	u64 pin_mapped_size = 0, pin_mapped_purgeable_size = 0;
 	struct drm_i915_gem_object *obj;
 	struct drm_file *file;
 	struct i915_vma *vma;
@@ -468,6 +478,14 @@ static int i915_gem_object_info(struct seq_file *m, void* data)
 		size += obj->base.size, ++count;
 		if (obj->madv == I915_MADV_DONTNEED)
 			purgeable_size += obj->base.size, ++purgeable_count;
+		if (obj->mapping) {
+			pin_mapped_count++;
+			pin_mapped_size += obj->base.size;
+			if (obj->pages_pin_count == 0) {
+				pin_mapped_purgeable_count++;
+				pin_mapped_purgeable_size += obj->base.size;
+			}
+		}
 	}
 	seq_printf(m, "%u unbound objects, %llu bytes\n", count, size);
 
@@ -485,13 +503,25 @@ static int i915_gem_object_info(struct seq_file *m, void* data)
 			purgeable_size += obj->base.size;
 			++purgeable_count;
 		}
+		if (obj->mapping) {
+			pin_mapped_count++;
+			pin_mapped_size += obj->base.size;
+			if (obj->pages_pin_count == 0) {
+				pin_mapped_purgeable_count++;
+				pin_mapped_purgeable_size += obj->base.size;
+			}
+		}
 	}
 	seq_printf(m, "%u purgeable objects, %llu bytes\n",
 		   purgeable_count, purgeable_size);
 	seq_printf(m, "%u pinned mappable objects, %llu bytes\n",
 		   mappable_count, mappable_size);
 	seq_printf(m, "%u fault mappable objects, %llu bytes\n",
 		   count, size);
+	seq_printf(m,
+		   "%lu [%lu] pin mapped objects, %llu [%llu] bytes [purgeable]\n",
+		   pin_mapped_count, pin_mapped_purgeable_count,
+		   pin_mapped_size, pin_mapped_purgeable_size);
 
 	seq_printf(m, "%llu [%llu] gtt total\n",
 		   ggtt->base.total, ggtt->mappable_end - ggtt->base.start);
@@ -1216,12 +1246,12 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
 		rpdeclimit = I915_READ(GEN6_RP_DOWN_THRESHOLD);
 
 		rpstat = I915_READ(GEN6_RPSTAT1);
-		rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
-		rpcurup = I915_READ(GEN6_RP_CUR_UP);
-		rpprevup = I915_READ(GEN6_RP_PREV_UP);
-		rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
-		rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
-		rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
+		rpupei = I915_READ(GEN6_RP_CUR_UP_EI) & GEN6_CURICONT_MASK;
+		rpcurup = I915_READ(GEN6_RP_CUR_UP) & GEN6_CURBSYTAVG_MASK;
+		rpprevup = I915_READ(GEN6_RP_PREV_UP) & GEN6_CURBSYTAVG_MASK;
+		rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI) & GEN6_CURIAVG_MASK;
+		rpcurdown = I915_READ(GEN6_RP_CUR_DOWN) & GEN6_CURBSYTAVG_MASK;
+		rpprevdown = I915_READ(GEN6_RP_PREV_DOWN) & GEN6_CURBSYTAVG_MASK;
 		if (IS_GEN9(dev))
 			cagf = (rpstat & GEN9_CAGF_MASK) >> GEN9_CAGF_SHIFT;
 		else if (IS_HASWELL(dev) || IS_BROADWELL(dev))
@@ -1261,21 +1291,21 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
 		seq_printf(m, "RPDECLIMIT: 0x%08x\n", rpdeclimit);
 		seq_printf(m, "RPNSWREQ: %dMHz\n", reqf);
 		seq_printf(m, "CAGF: %dMHz\n", cagf);
-		seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
-			   GEN6_CURICONT_MASK);
-		seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
-			   GEN6_CURBSYTAVG_MASK);
-		seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
-			   GEN6_CURBSYTAVG_MASK);
+		seq_printf(m, "RP CUR UP EI: %d (%dus)\n",
+			   rpupei, GT_PM_INTERVAL_TO_US(dev_priv, rpupei));
+		seq_printf(m, "RP CUR UP: %d (%dus)\n",
+			   rpcurup, GT_PM_INTERVAL_TO_US(dev_priv, rpcurup));
+		seq_printf(m, "RP PREV UP: %d (%dus)\n",
+			   rpprevup, GT_PM_INTERVAL_TO_US(dev_priv, rpprevup));
 		seq_printf(m, "Up threshold: %d%%\n",
 			   dev_priv->rps.up_threshold);
 
-		seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
-			   GEN6_CURIAVG_MASK);
-		seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
-			   GEN6_CURBSYTAVG_MASK);
-		seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
-			   GEN6_CURBSYTAVG_MASK);
+		seq_printf(m, "RP CUR DOWN EI: %d (%dus)\n",
+			   rpdownei, GT_PM_INTERVAL_TO_US(dev_priv, rpdownei));
+		seq_printf(m, "RP CUR DOWN: %d (%dus)\n",
+			   rpcurdown, GT_PM_INTERVAL_TO_US(dev_priv, rpcurdown));
+		seq_printf(m, "RP PREV DOWN: %d (%dus)\n",
+			   rpprevdown, GT_PM_INTERVAL_TO_US(dev_priv, rpprevdown));
 		seq_printf(m, "Down threshold: %d%%\n",
 			   dev_priv->rps.down_threshold);
 
@@ -1469,12 +1499,11 @@ static int i915_forcewake_domains(struct seq_file *m, void *data)
 	struct drm_device *dev = node->minor->dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_uncore_forcewake_domain *fw_domain;
-	int i;
 
 	spin_lock_irq(&dev_priv->uncore.lock);
-	for_each_fw_domain(fw_domain, dev_priv, i) {
+	for_each_fw_domain(fw_domain, dev_priv) {
 		seq_printf(m, "%s.wake_count = %u\n",
-			   intel_uncore_forcewake_domain_to_str(i),
+			   intel_uncore_forcewake_domain_to_str(fw_domain->id),
 			   fw_domain->wake_count);
 	}
 	spin_unlock_irq(&dev_priv->uncore.lock);
@@ -2405,10 +2434,11 @@ static int i915_llc(struct seq_file *m, void *data)
 	struct drm_info_node *node = m->private;
 	struct drm_device *dev = node->minor->dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
+	const bool edram = INTEL_GEN(dev_priv) > 8;
 
-	/* Size calculation for LLC is a bit of a pain. Ignore for now. */
 	seq_printf(m, "LLC: %s\n", yesno(HAS_LLC(dev)));
-	seq_printf(m, "eLLC: %zuMB\n", dev_priv->ellc_size);
+	seq_printf(m, "%s: %lluMB\n", edram ? "eDRAM" : "eLLC",
+		   intel_uncore_edram_size(dev_priv)/1024/1024);
 
 	return 0;
 }
@@ -4723,7 +4753,7 @@ i915_wedged_get(void *data, u64 *val)
 	struct drm_device *dev = data;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
-	*val = atomic_read(&dev_priv->gpu_error.reset_counter);
+	*val = i915_terminally_wedged(&dev_priv->gpu_error);
 
 	return 0;
 }

drivers/gpu/drm/i915/i915_dma.c

@@ -257,13 +257,6 @@ static int i915_get_bridge_dev(struct drm_device *dev)
 	return 0;
 }
 
-#define MCHBAR_I915 0x44
-#define MCHBAR_I965 0x48
-#define MCHBAR_SIZE (4*4096)
-
-#define DEVEN_REG 0x54
-#define   DEVEN_MCHBAR_EN (1 << 28)
-
 /* Allocate space for the MCH regs if needed, return nonzero on error */
 static int
 intel_alloc_mchbar_resource(struct drm_device *dev)
@@ -325,7 +318,7 @@ intel_setup_mchbar(struct drm_device *dev)
 	dev_priv->mchbar_need_disable = false;
 
 	if (IS_I915G(dev) || IS_I915GM(dev)) {
-		pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
+		pci_read_config_dword(dev_priv->bridge_dev, DEVEN, &temp);
 		enabled = !!(temp & DEVEN_MCHBAR_EN);
 	} else {
 		pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
@@ -343,7 +336,7 @@ intel_setup_mchbar(struct drm_device *dev)
 
 	/* Space is allocated or reserved, so enable it. */
 	if (IS_I915G(dev) || IS_I915GM(dev)) {
-		pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG,
+		pci_write_config_dword(dev_priv->bridge_dev, DEVEN,
 				       temp | DEVEN_MCHBAR_EN);
 	} else {
 		pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
@@ -356,17 +349,24 @@ intel_teardown_mchbar(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
-	u32 temp;
 
 	if (dev_priv->mchbar_need_disable) {
 		if (IS_I915G(dev) || IS_I915GM(dev)) {
-			pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
-			temp &= ~DEVEN_MCHBAR_EN;
-			pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG, temp);
+			u32 deven_val;
+
+			pci_read_config_dword(dev_priv->bridge_dev, DEVEN,
+					      &deven_val);
+			deven_val &= ~DEVEN_MCHBAR_EN;
+			pci_write_config_dword(dev_priv->bridge_dev, DEVEN,
+					       deven_val);
 		} else {
-			pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
-			temp &= ~1;
-			pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp);
+			u32 mchbar_val;
+
+			pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg,
+					      &mchbar_val);
+			mchbar_val &= ~1;
+			pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg,
+					       mchbar_val);
 		}
 	}