drm/i915: add uncore flags for unclaimed mmio

Save the HW capabilities to avoid having to jump back to dev_priv
every time.
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190325214940.23632-4-daniele.ceraolospurio@intel.com

drivers/gpu/drm/i915/i915_drv.c

@@ -2887,7 +2887,7 @@ static int intel_runtime_suspend(struct device *kdev)
 	enable_rpm_wakeref_asserts(dev_priv);
 	intel_runtime_pm_cleanup(dev_priv);
 
-	if (intel_uncore_arm_unclaimed_mmio_detection(dev_priv))
+	if (intel_uncore_arm_unclaimed_mmio_detection(&dev_priv->uncore))
 		DRM_ERROR("Unclaimed access detected prior to suspending\n");
 
 	dev_priv->runtime_pm.suspended = true;
@@ -2941,7 +2941,7 @@ static int intel_runtime_resume(struct device *kdev)
 
 	intel_opregion_notify_adapter(dev_priv, PCI_D0);
 	dev_priv->runtime_pm.suspended = false;
-	if (intel_uncore_unclaimed_mmio(dev_priv))
+	if (intel_uncore_unclaimed_mmio(&dev_priv->uncore))
 		DRM_DEBUG_DRIVER("Unclaimed access during suspend, bios?\n");
 
 	if (INTEL_GEN(dev_priv) >= 11) {

drivers/gpu/drm/i915/intel_display.c

@@ -13533,7 +13533,7 @@ static void intel_atomic_commit_tail(struct drm_atomic_state *state)
 		 * so enable debugging for the next modeset - and hope we catch
 		 * the culprit.
 		 */
-		intel_uncore_arm_unclaimed_mmio_detection(dev_priv);
+		intel_uncore_arm_unclaimed_mmio_detection(&dev_priv->uncore);
 		intel_display_power_put(dev_priv, POWER_DOMAIN_MODESET, wakeref);
 	}
 

drivers/gpu/drm/i915/intel_hangcheck.c

@@ -270,7 +270,7 @@ static void i915_hangcheck_elapsed(struct work_struct *work)
 	 * periodically arm the mmio checker to see if we are triggering
 	 * any invalid access.
 	 */
-	intel_uncore_arm_unclaimed_mmio_detection(dev_priv);
+	intel_uncore_arm_unclaimed_mmio_detection(&dev_priv->uncore);
 
 	for_each_engine(engine, dev_priv, id) {
 		struct hangcheck hc;

drivers/gpu/drm/i915/intel_uncore.c

@@ -509,18 +509,17 @@ gen6_check_for_fifo_debug(struct intel_uncore *uncore)
 }
 
 static bool
-check_for_unclaimed_mmio(struct drm_i915_private *dev_priv)
+check_for_unclaimed_mmio(struct intel_uncore *uncore)
 {
-	struct intel_uncore *uncore = &dev_priv->uncore;
 	bool ret = false;
 
-	if (HAS_FPGA_DBG_UNCLAIMED(dev_priv))
+	if (intel_uncore_has_fpga_dbg_unclaimed(uncore))
 		ret |= fpga_check_for_unclaimed_mmio(uncore);
 
-	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+	if (intel_uncore_has_dbg_unclaimed(uncore))
 		ret |= vlv_check_for_unclaimed_mmio(uncore);
 
-	if (IS_GEN_RANGE(dev_priv, 6, 7))
+	if (intel_uncore_has_fifo(uncore))
 		ret |= gen6_check_for_fifo_debug(uncore);
 
 	return ret;
@@ -529,14 +528,12 @@ check_for_unclaimed_mmio(struct drm_i915_private *dev_priv)
 static void __intel_uncore_early_sanitize(struct intel_uncore *uncore,
 					  unsigned int restore_forcewake)
 {
-	struct drm_i915_private *i915 = uncore_to_i915(uncore);
-
 	/* clear out unclaimed reg detection bit */
-	if (check_for_unclaimed_mmio(i915))
+	if (check_for_unclaimed_mmio(uncore))
 		DRM_DEBUG("unclaimed mmio detected on uncore init, clearing\n");
 
 	/* WaDisableShadowRegForCpd:chv */
-	if (IS_CHERRYVIEW(i915)) {
+	if (IS_CHERRYVIEW(uncore_to_i915(uncore))) {
 		__raw_uncore_write32(uncore, GTFIFOCTL,
 				     __raw_uncore_read32(uncore, GTFIFOCTL) |
 				     GT_FIFO_CTL_BLOCK_ALL_POLICY_STALL |
@@ -549,7 +546,7 @@ static void __intel_uncore_early_sanitize(struct intel_uncore *uncore,
 		spin_lock_irq(&uncore->lock);
 		uncore->funcs.force_wake_get(uncore, restore_forcewake);
 
-		if (IS_GEN_RANGE(i915, 6, 7))
+		if (intel_uncore_has_fifo(uncore))
 			uncore->fifo_count = fifo_free_entries(uncore);
 		spin_unlock_irq(&uncore->lock);
 	}
@@ -668,12 +665,10 @@ void intel_uncore_forcewake_user_get(struct intel_uncore *uncore)
  */
 void intel_uncore_forcewake_user_put(struct intel_uncore *uncore)
 {
-	struct drm_i915_private *i915 = uncore_to_i915(uncore);
-
 	spin_lock_irq(&uncore->lock);
 	if (!--uncore->user_forcewake.count) {
-		if (intel_uncore_unclaimed_mmio(i915))
-			dev_info(i915->drm.dev,
+		if (intel_uncore_unclaimed_mmio(uncore))
+			dev_info(uncore_to_i915(uncore)->drm.dev,
 				 "Invalid mmio detected during user access\n");
 
 		uncore->unclaimed_mmio_check =
@@ -1072,12 +1067,12 @@ ilk_dummy_write(struct intel_uncore *uncore)
 }
 
 static void
-__unclaimed_reg_debug(struct drm_i915_private *dev_priv,
+__unclaimed_reg_debug(struct intel_uncore *uncore,
 		      const i915_reg_t reg,
 		      const bool read,
 		      const bool before)
 {
-	if (WARN(check_for_unclaimed_mmio(dev_priv) && !before,
+	if (WARN(check_for_unclaimed_mmio(uncore) && !before,
 		 "Unclaimed %s register 0x%x\n",
 		 read ? "read from" : "write to",
 		 i915_mmio_reg_offset(reg)))
@@ -1086,7 +1081,7 @@ __unclaimed_reg_debug(struct drm_i915_private *dev_priv,
 }
 
 static inline void
-unclaimed_reg_debug(struct drm_i915_private *dev_priv,
+unclaimed_reg_debug(struct intel_uncore *uncore,
 		    const i915_reg_t reg,
 		    const bool read,
 		    const bool before)
@@ -1094,7 +1089,7 @@ unclaimed_reg_debug(struct drm_i915_private *dev_priv,
 	if (likely(!i915_modparams.mmio_debug))
 		return;
 
-	__unclaimed_reg_debug(dev_priv, reg, read, before);
+	__unclaimed_reg_debug(uncore, reg, read, before);
 }
 
 #define GEN2_READ_HEADER(x) \
@@ -1145,10 +1140,10 @@ __gen2_read(64)
 	u##x val = 0; \
 	assert_rpm_wakelock_held(dev_priv); \
 	spin_lock_irqsave(&uncore->lock, irqflags); \
-	unclaimed_reg_debug(dev_priv, reg, true, true)
+	unclaimed_reg_debug(uncore, reg, true, true)
 
 #define GEN6_READ_FOOTER \
-	unclaimed_reg_debug(dev_priv, reg, true, false); \
+	unclaimed_reg_debug(uncore, reg, true, false); \
 	spin_unlock_irqrestore(&uncore->lock, irqflags); \
 	trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \
 	return val
@@ -1259,10 +1254,10 @@ __gen2_write(32)
 	trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \
 	assert_rpm_wakelock_held(dev_priv); \
 	spin_lock_irqsave(&uncore->lock, irqflags); \
-	unclaimed_reg_debug(dev_priv, reg, false, true)
+	unclaimed_reg_debug(uncore, reg, false, true)
 
 #define GEN6_WRITE_FOOTER \
-	unclaimed_reg_debug(dev_priv, reg, false, false); \
+	unclaimed_reg_debug(uncore, reg, false, false); \
 	spin_unlock_irqrestore(&uncore->lock, irqflags)
 
 #define __gen6_write(x) \
@@ -1638,6 +1633,15 @@ int intel_uncore_init(struct intel_uncore *uncore)
 		ASSIGN_READ_MMIO_VFUNCS(uncore, gen11_fwtable);
 	}
 
+	if (HAS_FPGA_DBG_UNCLAIMED(i915))
+		uncore->flags |= UNCORE_HAS_FPGA_DBG_UNCLAIMED;
+
+	if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
+		uncore->flags |= UNCORE_HAS_DBG_UNCLAIMED;
+
+	if (IS_GEN_RANGE(i915, 6, 7))
+		uncore->flags |= UNCORE_HAS_FIFO;
+
 	iosf_mbi_register_pmic_bus_access_notifier(&uncore->pmic_bus_access_nb);
 
 	return 0;
@@ -1869,15 +1873,14 @@ int __intel_wait_for_register(struct drm_i915_private *dev_priv,
 	return ret;
 }
 
-bool intel_uncore_unclaimed_mmio(struct drm_i915_private *dev_priv)
+bool intel_uncore_unclaimed_mmio(struct intel_uncore *uncore)
 {
-	return check_for_unclaimed_mmio(dev_priv);
+	return check_for_unclaimed_mmio(uncore);
 }
 
 bool
-intel_uncore_arm_unclaimed_mmio_detection(struct drm_i915_private *dev_priv)
+intel_uncore_arm_unclaimed_mmio_detection(struct intel_uncore *uncore)
 {
-	struct intel_uncore *uncore = &dev_priv->uncore;
 	bool ret = false;
 
 	spin_lock_irq(&uncore->lock);
@@ -1885,7 +1888,7 @@ intel_uncore_arm_unclaimed_mmio_detection(struct drm_i915_private *dev_priv)
 	if (unlikely(uncore->unclaimed_mmio_check <= 0))
 		goto out;
 
-	if (unlikely(intel_uncore_unclaimed_mmio(dev_priv))) {
+	if (unlikely(intel_uncore_unclaimed_mmio(uncore))) {
 		if (!i915_modparams.mmio_debug) {
 			DRM_DEBUG("Unclaimed register detected, "
 				  "enabling oneshot unclaimed register reporting. "

drivers/gpu/drm/i915/intel_uncore.h

@@ -99,6 +99,9 @@ struct intel_uncore {
 
 	unsigned int flags;
 #define UNCORE_HAS_FORCEWAKE		BIT(0)
+#define UNCORE_HAS_FPGA_DBG_UNCLAIMED	BIT(1)
+#define UNCORE_HAS_DBG_UNCLAIMED	BIT(2)
+#define UNCORE_HAS_FIFO			BIT(3)
 
 	const struct intel_forcewake_range *fw_domains_table;
 	unsigned int fw_domains_table_entries;
@@ -152,11 +155,29 @@ intel_uncore_has_forcewake(const struct intel_uncore *uncore)
 	return uncore->flags & UNCORE_HAS_FORCEWAKE;
 }
 
+static inline bool
+intel_uncore_has_fpga_dbg_unclaimed(const struct intel_uncore *uncore)
+{
+	return uncore->flags & UNCORE_HAS_FPGA_DBG_UNCLAIMED;
+}
+
+static inline bool
+intel_uncore_has_dbg_unclaimed(const struct intel_uncore *uncore)
+{
+	return uncore->flags & UNCORE_HAS_DBG_UNCLAIMED;
+}
+
+static inline bool
+intel_uncore_has_fifo(const struct intel_uncore *uncore)
+{
+	return uncore->flags & UNCORE_HAS_FIFO;
+}
+
 void intel_uncore_sanitize(struct drm_i915_private *dev_priv);
 int intel_uncore_init(struct intel_uncore *uncore);
 void intel_uncore_prune(struct intel_uncore *uncore);
-bool intel_uncore_unclaimed_mmio(struct drm_i915_private *dev_priv);
-bool intel_uncore_arm_unclaimed_mmio_detection(struct drm_i915_private *dev_priv);
+bool intel_uncore_unclaimed_mmio(struct intel_uncore *uncore);
+bool intel_uncore_arm_unclaimed_mmio_detection(struct intel_uncore *uncore);
 void intel_uncore_fini(struct intel_uncore *uncore);
 void intel_uncore_suspend(struct intel_uncore *uncore);
 void intel_uncore_resume_early(struct intel_uncore *uncore);

drivers/gpu/drm/i915/selftests/intel_uncore.c

@@ -244,6 +244,7 @@ static int live_forcewake_domains(void *arg)
 {
 #define FW_RANGE 0x40000
 	struct drm_i915_private *dev_priv = arg;
+	struct intel_uncore *uncore = &dev_priv->uncore;
 	unsigned long *valid;
 	u32 offset;
 	int err;
@@ -263,31 +264,31 @@ static int live_forcewake_domains(void *arg)
 	if (!valid)
 		return -ENOMEM;
 
-	intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL);
+	intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
 
-	check_for_unclaimed_mmio(dev_priv);
+	check_for_unclaimed_mmio(uncore);
 	for (offset = 0; offset < FW_RANGE; offset += 4) {
 		i915_reg_t reg = { offset };
 
 		(void)I915_READ_FW(reg);
-		if (!check_for_unclaimed_mmio(dev_priv))
+		if (!check_for_unclaimed_mmio(uncore))
 			set_bit(offset, valid);
 	}
 
-	intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
+	intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
 
 	err = 0;
 	for_each_set_bit(offset, valid, FW_RANGE) {
 		i915_reg_t reg = { offset };
 
 		iosf_mbi_punit_acquire();
-		intel_uncore_forcewake_reset(&dev_priv->uncore);
+		intel_uncore_forcewake_reset(uncore);
 		iosf_mbi_punit_release();
 
-		check_for_unclaimed_mmio(dev_priv);
+		check_for_unclaimed_mmio(uncore);
 
 		(void)I915_READ(reg);
-		if (check_for_unclaimed_mmio(dev_priv)) {
+		if (check_for_unclaimed_mmio(uncore)) {
 			pr_err("Unclaimed mmio read to register 0x%04x\n",
 			       offset);
 			err = -EINVAL;