1 files changed, 581 insertions, 222 deletions

diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index ed396f7b7dca..94185d610673 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -193,6 +193,7 @@
 
 #include <linux/anon_inodes.h>
 #include <linux/sizes.h>
+#include <linux/uuid.h>
 
 #include "i915_drv.h"
 #include "i915_oa_hsw.h"
@@ -357,6 +358,54 @@ struct perf_open_properties {
 	int oa_period_exponent;
 };
 
+static void free_oa_config(struct drm_i915_private *dev_priv,
+			   struct i915_oa_config *oa_config)
+{
+	if (!PTR_ERR(oa_config->flex_regs))
+		kfree(oa_config->flex_regs);
+	if (!PTR_ERR(oa_config->b_counter_regs))
+		kfree(oa_config->b_counter_regs);
+	if (!PTR_ERR(oa_config->mux_regs))
+		kfree(oa_config->mux_regs);
+	kfree(oa_config);
+}
+
+static void put_oa_config(struct drm_i915_private *dev_priv,
+			  struct i915_oa_config *oa_config)
+{
+	if (!atomic_dec_and_test(&oa_config->ref_count))
+		return;
+
+	free_oa_config(dev_priv, oa_config);
+}
+
+static int get_oa_config(struct drm_i915_private *dev_priv,
+			 int metrics_set,
+			 struct i915_oa_config **out_config)
+{
+	int ret;
+
+	if (metrics_set == 1) {
+		*out_config = &dev_priv->perf.oa.test_config;
+		atomic_inc(&dev_priv->perf.oa.test_config.ref_count);
+		return 0;
+	}
+
+	ret = mutex_lock_interruptible(&dev_priv->perf.metrics_lock);
+	if (ret)
+		return ret;
+
+	*out_config = idr_find(&dev_priv->perf.metrics_idr, metrics_set);
+	if (!*out_config)
+		ret = -EINVAL;
+	else
+		atomic_inc(&(*out_config)->ref_count);
+
+	mutex_unlock(&dev_priv->perf.metrics_lock);
+
+	return ret;
+}
+
 static u32 gen8_oa_hw_tail_read(struct drm_i915_private *dev_priv)
 {
 	return I915_READ(GEN8_OATAILPTR) & GEN8_OATAILPTR_MASK;
@@ -1246,10 +1295,12 @@ static void i915_oa_stream_destroy(struct i915_perf_stream *stream)
 	BUG_ON(stream != dev_priv->perf.oa.exclusive_stream);
 
 	/*
-	 * Unset exclusive_stream first, it might be checked while
-	 * disabling the metric set on gen8+.
+	 * Unset exclusive_stream first, it will be checked while disabling
+	 * the metric set on gen8+.
 	 */
+	mutex_lock(&dev_priv->drm.struct_mutex);
 	dev_priv->perf.oa.exclusive_stream = NULL;
+	mutex_unlock(&dev_priv->drm.struct_mutex);
 
 	dev_priv->perf.oa.ops.disable_metric_set(dev_priv);
 
@@ -1261,6 +1312,8 @@ static void i915_oa_stream_destroy(struct i915_perf_stream *stream)
 	if (stream->ctx)
 		oa_put_render_ctx_id(stream);
 
+	put_oa_config(dev_priv, stream->oa_config);
+
 	if (dev_priv->perf.oa.spurious_report_rs.missed) {
 		DRM_NOTE("%d spurious OA report notices suppressed due to ratelimiting\n",
 			 dev_priv->perf.oa.spurious_report_rs.missed);
@@ -1440,9 +1493,9 @@ unlock:
 
 static void config_oa_regs(struct drm_i915_private *dev_priv,
 			   const struct i915_oa_reg *regs,
-			   int n_regs)
+			   u32 n_regs)
 {
-	int i;
+	u32 i;
 
 	for (i = 0; i < n_regs; i++) {
 		const struct i915_oa_reg *reg = regs + i;
@@ -1451,17 +1504,9 @@ static void config_oa_regs(struct drm_i915_private *dev_priv,
 	}
 }
 
-static int hsw_enable_metric_set(struct drm_i915_private *dev_priv)
+static int hsw_enable_metric_set(struct drm_i915_private *dev_priv,
+				 const struct i915_oa_config *oa_config)
 {
-	int ret = i915_oa_select_metric_set_hsw(dev_priv);
-	int i;
-
-	if (ret)
-		return ret;
-
-	I915_WRITE(GDT_CHICKEN_BITS, (I915_READ(GDT_CHICKEN_BITS) |
-				      GT_NOA_ENABLE));
-
 	/* PRM:
 	 *
 	 * OA unit is using “crclk” for its functionality. When trunk
@@ -1476,10 +1521,7 @@ static int hsw_enable_metric_set(struct drm_i915_private *dev_priv)
 	I915_WRITE(GEN6_UCGCTL1, (I915_READ(GEN6_UCGCTL1) |
 				  GEN6_CSUNIT_CLOCK_GATE_DISABLE));
 
-	for (i = 0; i < dev_priv->perf.oa.n_mux_configs; i++) {
-		config_oa_regs(dev_priv, dev_priv->perf.oa.mux_regs[i],
-			       dev_priv->perf.oa.mux_regs_lens[i]);
-	}
+	config_oa_regs(dev_priv, oa_config->mux_regs, oa_config->mux_regs_len);
 
 	/* It apparently takes a fairly long time for a new MUX
 	 * configuration to be be applied after these register writes.
@@ -1504,8 +1546,8 @@ static int hsw_enable_metric_set(struct drm_i915_private *dev_priv)
 	 */
 	usleep_range(15000, 20000);
 
-	config_oa_regs(dev_priv, dev_priv->perf.oa.b_counter_regs,
-		       dev_priv->perf.oa.b_counter_regs_len);
+	config_oa_regs(dev_priv, oa_config->b_counter_regs,
+		       oa_config->b_counter_regs_len);
 
 	return 0;
 }
@@ -1529,11 +1571,10 @@ static void hsw_disable_metric_set(struct drm_i915_private *dev_priv)
  * in the case that the OA unit has been disabled.
  */
 static void gen8_update_reg_state_unlocked(struct i915_gem_context *ctx,
-					   u32 *reg_state)
+					   u32 *reg_state,
+					   const struct i915_oa_config *oa_config)
 {
 	struct drm_i915_private *dev_priv = ctx->i915;
-	const struct i915_oa_reg *flex_regs = dev_priv->perf.oa.flex_regs;
-	int n_flex_regs = dev_priv->perf.oa.flex_regs_len;
 	u32 ctx_oactxctrl = dev_priv->perf.oa.ctx_oactxctrl_offset;
 	u32 ctx_flexeu0 = dev_priv->perf.oa.ctx_flexeu0_offset;
 	/* The MMIO offsets for Flex EU registers aren't contiguous */
@@ -1565,12 +1606,15 @@ static void gen8_update_reg_state_unlocked(struct i915_gem_context *ctx,
 		 * will be an explicit 'No Event' we can select, but not yet...
 		 */
 		u32 value = 0;
-		int j;
 
-		for (j = 0; j < n_flex_regs; j++) {
-			if (i915_mmio_reg_offset(flex_regs[j].addr) == mmio) {
-				value = flex_regs[j].value;
-				break;
+		if (oa_config) {
+			u32 j;
+
+			for (j = 0; j < oa_config->flex_regs_len; j++) {
+				if (i915_mmio_reg_offset(oa_config->flex_regs[j].addr) == mmio) {
+					value = oa_config->flex_regs[j].value;
+					break;
+				}
 			}
 		}
 
@@ -1583,11 +1627,10 @@ static void gen8_update_reg_state_unlocked(struct i915_gem_context *ctx,
  * Same as gen8_update_reg_state_unlocked only through the batchbuffer. This
  * is only used by the kernel context.
  */
-static int gen8_emit_oa_config(struct drm_i915_gem_request *req)
+static int gen8_emit_oa_config(struct drm_i915_gem_request *req,
+			       const struct i915_oa_config *oa_config)
 {
 	struct drm_i915_private *dev_priv = req->i915;
-	const struct i915_oa_reg *flex_regs = dev_priv->perf.oa.flex_regs;
-	int n_flex_regs = dev_priv->perf.oa.flex_regs_len;
 	/* The MMIO offsets for Flex EU registers aren't contiguous */
 	u32 flex_mmio[] = {
 		i915_mmio_reg_offset(EU_PERF_CNTL0),
@@ -1622,12 +1665,15 @@ static int gen8_emit_oa_config(struct drm_i915_gem_request *req)
 		 * yet...
 		 */
 		u32 value = 0;
-		int j;
 
-		for (j = 0; j < n_flex_regs; j++) {
-			if (i915_mmio_reg_offset(flex_regs[j].addr) == mmio) {
-				value = flex_regs[j].value;
-				break;
+		if (oa_config) {
+			u32 j;
+
+			for (j = 0; j < oa_config->flex_regs_len; j++) {
+				if (i915_mmio_reg_offset(oa_config->flex_regs[j].addr) == mmio) {
+					value = oa_config->flex_regs[j].value;
+					break;
+				}
 			}
 		}
 
@@ -1641,7 +1687,8 @@ static int gen8_emit_oa_config(struct drm_i915_gem_request *req)
 	return 0;
 }
 
-static int gen8_switch_to_updated_kernel_context(struct drm_i915_private *dev_priv)
+static int gen8_switch_to_updated_kernel_context(struct drm_i915_private *dev_priv,
+						 const struct i915_oa_config *oa_config)
 {
 	struct intel_engine_cs *engine = dev_priv->engine[RCS];
 	struct i915_gem_timeline *timeline;
@@ -1656,7 +1703,7 @@ static int gen8_switch_to_updated_kernel_context(struct drm_i915_private *dev_pr
 	if (IS_ERR(req))
 		return PTR_ERR(req);
 
-	ret = gen8_emit_oa_config(req);
+	ret = gen8_emit_oa_config(req, oa_config);
 	if (ret) {
 		i915_add_request(req);
 		return ret;
@@ -1707,6 +1754,7 @@ static int gen8_switch_to_updated_kernel_context(struct drm_i915_private *dev_pr
  * Note: it's only the RCS/Render context that has any OA state.
  */
 static int gen8_configure_all_contexts(struct drm_i915_private *dev_priv,
+				       const struct i915_oa_config *oa_config,
 				       bool interruptible)
 {
 	struct i915_gem_context *ctx;
@@ -1724,7 +1772,7 @@ static int gen8_configure_all_contexts(struct drm_i915_private *dev_priv,
 	}
 
 	/* Switch away from any user context. */
-	ret = gen8_switch_to_updated_kernel_context(dev_priv);
+	ret = gen8_switch_to_updated_kernel_context(dev_priv, oa_config);
 	if (ret)
 		goto out;
 
@@ -1763,7 +1811,7 @@ static int gen8_configure_all_contexts(struct drm_i915_private *dev_priv,
 		ce->state->obj->mm.dirty = true;
 		regs += LRC_STATE_PN * PAGE_SIZE / sizeof(*regs);
 
-		gen8_update_reg_state_unlocked(ctx, regs);
+		gen8_update_reg_state_unlocked(ctx, regs, oa_config);
 
 		i915_gem_object_unpin_map(ce->state->obj);
 	}
@@ -1774,13 +1822,10 @@ static int gen8_configure_all_contexts(struct drm_i915_private *dev_priv,
 	return ret;
 }
 
-static int gen8_enable_metric_set(struct drm_i915_private *dev_priv)
+static int gen8_enable_metric_set(struct drm_i915_private *dev_priv,
+				  const struct i915_oa_config *oa_config)
 {
-	int ret = dev_priv->perf.oa.ops.select_metric_set(dev_priv);
-	int i;
-
-	if (ret)
-		return ret;
+	int ret;
 
 	/*
 	 * We disable slice/unslice clock ratio change reports on SKL since
@@ -1817,19 +1862,14 @@ static int gen8_enable_metric_set(struct drm_i915_private *dev_priv)
 	 * to make sure all slices/subslices are ON before writing to NOA
 	 * registers.
 	 */
-	ret = gen8_configure_all_contexts(dev_priv, true);
+	ret = gen8_configure_all_contexts(dev_priv, oa_config, true);
 	if (ret)
 		return ret;
 
-	I915_WRITE(GDT_CHICKEN_BITS, 0xA0);
-	for (i = 0; i < dev_priv->perf.oa.n_mux_configs; i++) {
-		config_oa_regs(dev_priv, dev_priv->perf.oa.mux_regs[i],
-			       dev_priv->perf.oa.mux_regs_lens[i]);
-	}
-	I915_WRITE(GDT_CHICKEN_BITS, 0x80);
+	config_oa_regs(dev_priv, oa_config->mux_regs, oa_config->mux_regs_len);
 
-	config_oa_regs(dev_priv, dev_priv->perf.oa.b_counter_regs,
-		       dev_priv->perf.oa.b_counter_regs_len);
+	config_oa_regs(dev_priv, oa_config->b_counter_regs,
+		       oa_config->b_counter_regs_len);
 
 	return 0;
 }
@@ -1837,7 +1877,11 @@ static int gen8_enable_metric_set(struct drm_i915_private *dev_priv)
 static void gen8_disable_metric_set(struct drm_i915_private *dev_priv)
 {
 	/* Reset all contexts' slices/subslices configurations. */
-	gen8_configure_all_contexts(dev_priv, false);
+	gen8_configure_all_contexts(dev_priv, NULL, false);
+
+	I915_WRITE(GDT_CHICKEN_BITS, (I915_READ(GDT_CHICKEN_BITS) &
+				      ~GT_NOA_ENABLE));
+
 }
 
 static void gen7_oa_enable(struct drm_i915_private *dev_priv)
@@ -2011,11 +2055,6 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
 		return -EBUSY;
 	}
 
-	if (!props->metrics_set) {
-		DRM_DEBUG("OA metric set not specified\n");
-		return -EINVAL;
-	}
-
 	if (!props->oa_format) {
 		DRM_DEBUG("OA report format not specified\n");
 		return -EINVAL;
@@ -2055,8 +2094,6 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
 	dev_priv->perf.oa.oa_buffer.format =
 		dev_priv->perf.oa.oa_formats[props->oa_format].format;
 
-	dev_priv->perf.oa.metrics_set = props->metrics_set;
-
 	dev_priv->perf.oa.periodic = props->oa_periodic;
 	if (dev_priv->perf.oa.periodic)
 		dev_priv->perf.oa.period_exponent = props->oa_period_exponent;
@@ -2067,6 +2104,10 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
 			return ret;
 	}
 
+	ret = get_oa_config(dev_priv, props->metrics_set, &stream->oa_config);
+	if (ret)
+		goto err_config;
+
 	/* PRM - observability performance counters:
 	 *
 	 *   OACONTROL, performance counter enable, note:
@@ -2086,22 +2127,39 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
 	if (ret)
 		goto err_oa_buf_alloc;
 
-	ret = dev_priv->perf.oa.ops.enable_metric_set(dev_priv);
+	ret = dev_priv->perf.oa.ops.enable_metric_set(dev_priv,
+						      stream->oa_config);
 	if (ret)
 		goto err_enable;
 
 	stream->ops = &i915_oa_stream_ops;
 
+	/* Lock device for exclusive_stream access late because
+	 * enable_metric_set() might lock as well on gen8+.
+	 */
+	ret = i915_mutex_lock_interruptible(&dev_priv->drm);
+	if (ret)
+		goto err_lock;
+
 	dev_priv->perf.oa.exclusive_stream = stream;
 
+	mutex_unlock(&dev_priv->drm.struct_mutex);
+
 	return 0;
 
+err_lock:
+	dev_priv->perf.oa.ops.disable_metric_set(dev_priv);
+
 err_enable:
 	free_oa_buffer(dev_priv);
 
 err_oa_buf_alloc:
+	put_oa_config(dev_priv, stream->oa_config);
+
 	intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
 	intel_runtime_pm_put(dev_priv);
+
+err_config:
 	if (stream->ctx)
 		oa_put_render_ctx_id(stream);
 
@@ -2112,15 +2170,14 @@ void i915_oa_init_reg_state(struct intel_engine_cs *engine,
 			    struct i915_gem_context *ctx,
 			    u32 *reg_state)
 {
-	struct drm_i915_private *dev_priv = engine->i915;
+	struct i915_perf_stream *stream;
 
 	if (engine->id != RCS)
 		return;
 
-	if (!dev_priv->perf.initialized)
-		return;
-
-	gen8_update_reg_state_unlocked(ctx, reg_state);
+	stream = engine->i915->perf.oa.exclusive_stream;
+	if (stream)
+		gen8_update_reg_state_unlocked(ctx, reg_state, stream->oa_config);
 }
 
 /**
@@ -2483,27 +2540,6 @@ static const struct file_operations fops = {
 };
 
 
-static struct i915_gem_context *
-lookup_context(struct drm_i915_private *dev_priv,
-	       struct drm_i915_file_private *file_priv,
-	       u32 ctx_user_handle)
-{
-	struct i915_gem_context *ctx;
-	int ret;
-
-	ret = i915_mutex_lock_interruptible(&dev_priv->drm);
-	if (ret)
-		return ERR_PTR(ret);
-
-	ctx = i915_gem_context_lookup(file_priv, ctx_user_handle);
-	if (!IS_ERR(ctx))
-		i915_gem_context_get(ctx);
-
-	mutex_unlock(&dev_priv->drm.struct_mutex);
-
-	return ctx;
-}
-
 /**
  * i915_perf_open_ioctl_locked - DRM ioctl() for userspace to open a stream FD
  * @dev_priv: i915 device instance
@@ -2545,12 +2581,11 @@ i915_perf_open_ioctl_locked(struct drm_i915_private *dev_priv,
 		u32 ctx_handle = props->ctx_handle;
 		struct drm_i915_file_private *file_priv = file->driver_priv;
 
-		specific_ctx = lookup_context(dev_priv, file_priv, ctx_handle);
-		if (IS_ERR(specific_ctx)) {
-			ret = PTR_ERR(specific_ctx);
-			if (ret != -EINTR)
-				DRM_DEBUG("Failed to look up context with ID %u for opening perf stream\n",
-					  ctx_handle);
+		specific_ctx = i915_gem_context_lookup(file_priv, ctx_handle);
+		if (!specific_ctx) {
+			DRM_DEBUG("Failed to look up context with ID %u for opening perf stream\n",
+				  ctx_handle);
+			ret = -ENOENT;
 			goto err;
 		}
 	}
@@ -2665,7 +2700,7 @@ static int read_properties_unlocked(struct drm_i915_private *dev_priv,
 				    struct perf_open_properties *props)
 {
 	u64 __user *uprop = uprops;
-	int i;
+	u32 i;
 
 	memset(props, 0, sizeof(struct perf_open_properties));
 
@@ -2712,8 +2747,7 @@ static int read_properties_unlocked(struct drm_i915_private *dev_priv,
 			props->sample_flags |= SAMPLE_OA_REPORT;
 			break;
 		case DRM_I915_PERF_PROP_OA_METRICS_SET:
-			if (value == 0 ||
-			    value > dev_priv->perf.oa.n_builtin_sets) {
+			if (value == 0) {
 				DRM_DEBUG("Unknown OA metric set ID\n");
 				return -EINVAL;
 			}
@@ -2852,6 +2886,8 @@ int i915_perf_open_ioctl(struct drm_device *dev, void *data,
  */
 void i915_perf_register(struct drm_i915_private *dev_priv)
 {
+	int ret;
+
 	if (!dev_priv->perf.initialized)
 		return;
 
@@ -2867,44 +2903,42 @@ void i915_perf_register(struct drm_i915_private *dev_priv)
 	if (!dev_priv->perf.metrics_kobj)
 		goto exit;
 
+	sysfs_attr_init(&dev_priv->perf.oa.test_config.sysfs_metric_id.attr);
+
 	if (IS_HASWELL(dev_priv)) {
-		if (i915_perf_register_sysfs_hsw(dev_priv))
-			goto sysfs_error;
+		i915_perf_load_test_config_hsw(dev_priv);
 	} else if (IS_BROADWELL(dev_priv)) {
-		if (i915_perf_register_sysfs_bdw(dev_priv))
-			goto sysfs_error;
+		i915_perf_load_test_config_bdw(dev_priv);
 	} else if (IS_CHERRYVIEW(dev_priv)) {
-		if (i915_perf_register_sysfs_chv(dev_priv))
-			goto sysfs_error;
+		i915_perf_load_test_config_chv(dev_priv);
 	} else if (IS_SKYLAKE(dev_priv)) {
-		if (IS_SKL_GT2(dev_priv)) {
-			if (i915_perf_register_sysfs_sklgt2(dev_priv))
-				goto sysfs_error;
-		} else if (IS_SKL_GT3(dev_priv)) {
-			if (i915_perf_register_sysfs_sklgt3(dev_priv))
-				goto sysfs_error;
-		} else if (IS_SKL_GT4(dev_priv)) {
-			if (i915_perf_register_sysfs_sklgt4(dev_priv))
-				goto sysfs_error;
-		} else
-			goto sysfs_error;
+		if (IS_SKL_GT2(dev_priv))
+			i915_perf_load_test_config_sklgt2(dev_priv);
+		else if (IS_SKL_GT3(dev_priv))
+			i915_perf_load_test_config_sklgt3(dev_priv);
+		else if (IS_SKL_GT4(dev_priv))
+			i915_perf_load_test_config_sklgt4(dev_priv);
 	} else if (IS_BROXTON(dev_priv)) {
-		if (i915_perf_register_sysfs_bxt(dev_priv))
-			goto sysfs_error;
+		i915_perf_load_test_config_bxt(dev_priv);
 	} else if (IS_KABYLAKE(dev_priv)) {
-		if (IS_KBL_GT2(dev_priv)) {
-			if (i915_perf_register_sysfs_kblgt2(dev_priv))
-				goto sysfs_error;
-		} else if (IS_KBL_GT3(dev_priv)) {
-			if (i915_perf_register_sysfs_kblgt3(dev_priv))
-				goto sysfs_error;
-		} else
-			goto sysfs_error;
+		if (IS_KBL_GT2(dev_priv))
+			i915_perf_load_test_config_kblgt2(dev_priv);
+		else if (IS_KBL_GT3(dev_priv))
+			i915_perf_load_test_config_kblgt3(dev_priv);
 	} else if (IS_GEMINILAKE(dev_priv)) {
-		if (i915_perf_register_sysfs_glk(dev_priv))
-			goto sysfs_error;
+		i915_perf_load_test_config_glk(dev_priv);
 	}
 
+	if (dev_priv->perf.oa.test_config.id == 0)
+		goto sysfs_error;
+
+	ret = sysfs_create_group(dev_priv->perf.metrics_kobj,
+				 &dev_priv->perf.oa.test_config.sysfs_metric);
+	if (ret)
+		goto sysfs_error;
+
+	atomic_set(&dev_priv->perf.oa.test_config.ref_count, 1);
+
 	goto exit;
 
 sysfs_error:
@@ -2929,34 +2963,375 @@ void i915_perf_unregister(struct drm_i915_private *dev_priv)
 	if (!dev_priv->perf.metrics_kobj)
 		return;
 
-	if (IS_HASWELL(dev_priv))
-		i915_perf_unregister_sysfs_hsw(dev_priv);
-	else if (IS_BROADWELL(dev_priv))
-		i915_perf_unregister_sysfs_bdw(dev_priv);
-	else if (IS_CHERRYVIEW(dev_priv))
-		i915_perf_unregister_sysfs_chv(dev_priv);
-	else if (IS_SKYLAKE(dev_priv)) {
-		if (IS_SKL_GT2(dev_priv))
-			i915_perf_unregister_sysfs_sklgt2(dev_priv);
-		else if (IS_SKL_GT3(dev_priv))
-			i915_perf_unregister_sysfs_sklgt3(dev_priv);
-		else if (IS_SKL_GT4(dev_priv))
-			i915_perf_unregister_sysfs_sklgt4(dev_priv);
-	} else if (IS_BROXTON(dev_priv))
-		i915_perf_unregister_sysfs_bxt(dev_priv);
-	else if (IS_KABYLAKE(dev_priv)) {
-		if (IS_KBL_GT2(dev_priv))
-			i915_perf_unregister_sysfs_kblgt2(dev_priv);
-		else if (IS_KBL_GT3(dev_priv))
-			i915_perf_unregister_sysfs_kblgt3(dev_priv);
-	} else if (IS_GEMINILAKE(dev_priv))
-		i915_perf_unregister_sysfs_glk(dev_priv);
-
+	sysfs_remove_group(dev_priv->perf.metrics_kobj,
+			   &dev_priv->perf.oa.test_config.sysfs_metric);
 
 	kobject_put(dev_priv->perf.metrics_kobj);
 	dev_priv->perf.metrics_kobj = NULL;
 }
 
+static bool gen8_is_valid_flex_addr(struct drm_i915_private *dev_priv, u32 addr)
+{
+	static const i915_reg_t flex_eu_regs[] = {
+		EU_PERF_CNTL0,
+		EU_PERF_CNTL1,
+		EU_PERF_CNTL2,
+		EU_PERF_CNTL3,
+		EU_PERF_CNTL4,
+		EU_PERF_CNTL5,
+		EU_PERF_CNTL6,
+	};
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(flex_eu_regs); i++) {
+		if (flex_eu_regs[i].reg == addr)
+			return true;
+	}
+	return false;
+}
+
+static bool gen7_is_valid_b_counter_addr(struct drm_i915_private *dev_priv, u32 addr)
+{
+	return (addr >= OASTARTTRIG1.reg && addr <= OASTARTTRIG8.reg) ||
+		(addr >= OAREPORTTRIG1.reg && addr <= OAREPORTTRIG8.reg) ||
+		(addr >= OACEC0_0.reg && addr <= OACEC7_1.reg);
+}
+
+static bool gen7_is_valid_mux_addr(struct drm_i915_private *dev_priv, u32 addr)
+{
+	return addr == HALF_SLICE_CHICKEN2.reg ||
+		(addr >= MICRO_BP0_0.reg && addr <= NOA_WRITE.reg) ||
+		(addr >= OA_PERFCNT1_LO.reg && addr <= OA_PERFCNT2_HI.reg) ||
+		(addr >= OA_PERFMATRIX_LO.reg && addr <= OA_PERFMATRIX_HI.reg);
+}
+
+static bool gen8_is_valid_mux_addr(struct drm_i915_private *dev_priv, u32 addr)
+{
+	return gen7_is_valid_mux_addr(dev_priv, addr) ||
+		addr == WAIT_FOR_RC6_EXIT.reg ||
+		(addr >= RPM_CONFIG0.reg && addr <= NOA_CONFIG(8).reg);
+}
+
+static bool hsw_is_valid_mux_addr(struct drm_i915_private *dev_priv, u32 addr)
+{
+	return gen7_is_valid_mux_addr(dev_priv, addr) ||
+		(addr >= 0x25100 && addr <= 0x2FF90) ||
+		addr == 0x9ec0;
+}
+
+static bool chv_is_valid_mux_addr(struct drm_i915_private *dev_priv, u32 addr)
+{
+	return gen7_is_valid_mux_addr(dev_priv, addr) ||
+		(addr >= 0x182300 && addr <= 0x1823A4);
+}
+
+static uint32_t mask_reg_value(u32 reg, u32 val)
+{
+	/* HALF_SLICE_CHICKEN2 is programmed with a the
+	 * WaDisableSTUnitPowerOptimization workaround. Make sure the value
+	 * programmed by userspace doesn't change this.
+	 */
+	if (HALF_SLICE_CHICKEN2.reg == reg)
+		val = val & ~_MASKED_BIT_ENABLE(GEN8_ST_PO_DISABLE);
+
+	/* WAIT_FOR_RC6_EXIT has only one bit fullfilling the function
+	 * indicated by its name and a bunch of selection fields used by OA
+	 * configs.
+	 */
+	if (WAIT_FOR_RC6_EXIT.reg == reg)
+		val = val & ~_MASKED_BIT_ENABLE(HSW_WAIT_FOR_RC6_EXIT_ENABLE);
+
+	return val;
+}
+
+static struct i915_oa_reg *alloc_oa_regs(struct drm_i915_private *dev_priv,
+					 bool (*is_valid)(struct drm_i915_private *dev_priv, u32 addr),
+					 u32 __user *regs,
+					 u32 n_regs)
+{
+	struct i915_oa_reg *oa_regs;
+	int err;
+	u32 i;
+
+	if (!n_regs)
+		return NULL;
+
+	if (!access_ok(VERIFY_READ, regs, n_regs * sizeof(u32) * 2))
+		return ERR_PTR(-EFAULT);
+
+	/* No is_valid function means we're not allowing any register to be programmed. */
+	GEM_BUG_ON(!is_valid);
+	if (!is_valid)
+		return ERR_PTR(-EINVAL);
+
+	oa_regs = kmalloc_array(n_regs, sizeof(*oa_regs), GFP_KERNEL);
+	if (!oa_regs)
+		return ERR_PTR(-ENOMEM);
+
+	for (i = 0; i < n_regs; i++) {
+		u32 addr, value;
+
+		err = get_user(addr, regs);
+		if (err)
+			goto addr_err;
+
+		if (!is_valid(dev_priv, addr)) {
+			DRM_DEBUG("Invalid oa_reg address: %X\n", addr);
+			err = -EINVAL;
+			goto addr_err;
+		}
+
+		err = get_user(value, regs + 1);
+		if (err)
+			goto addr_err;
+
+		oa_regs[i].addr = _MMIO(addr);
+		oa_regs[i].value = mask_reg_value(addr, value);
+
+		regs += 2;
+	}
+
+	return oa_regs;
+
+addr_err:
+	kfree(oa_regs);
+	return ERR_PTR(err);
+}
+
+static ssize_t show_dynamic_id(struct device *dev,
+			       struct device_attribute *attr,
+			       char *buf)
+{
+	struct i915_oa_config *oa_config =
+		container_of(attr, typeof(*oa_config), sysfs_metric_id);
+
+	return sprintf(buf, "%d\n", oa_config->id);
+}
+
+static int create_dynamic_oa_sysfs_entry(struct drm_i915_private *dev_priv,
+					 struct i915_oa_config *oa_config)
+{
+	sysfs_attr_init(&oa_config->sysfs_metric_id.attr);
+	oa_config->sysfs_metric_id.attr.name = "id";
+	oa_config->sysfs_metric_id.attr.mode = S_IRUGO;
+	oa_config->sysfs_metric_id.show = show_dynamic_id;
+	oa_config->sysfs_metric_id.store = NULL;
+
+	oa_config->attrs[0] = &oa_config->sysfs_metric_id.attr;
+	oa_config->attrs[1] = NULL;
+
+	oa_config->sysfs_metric.name = oa_config->uuid;
+	oa_config->sysfs_metric.attrs = oa_config->attrs;
+
+	return sysfs_create_group(dev_priv->perf.metrics_kobj,
+				  &oa_config->sysfs_metric);
+}
+
+/**
+ * i915_perf_add_config_ioctl - DRM ioctl() for userspace to add a new OA config
+ * @dev: drm device
+ * @data: ioctl data (pointer to struct drm_i915_perf_oa_config) copied from
+ *        userspace (unvalidated)
+ * @file: drm file
+ *
+ * Validates the submitted OA register to be saved into a new OA config that
+ * can then be used for programming the OA unit and its NOA network.
+ *
+ * Returns: A new allocated config number to be used with the perf open ioctl
+ * or a negative error code on failure.
+ */
+int i915_perf_add_config_ioctl(struct drm_device *dev, void *data,
+			       struct drm_file *file)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_perf_oa_config *args = data;
+	struct i915_oa_config *oa_config, *tmp;
+	int err, id;
+
+	if (!dev_priv->perf.initialized) {
+		DRM_DEBUG("i915 perf interface not available for this system\n");
+		return -ENOTSUPP;
+	}
+
+	if (!dev_priv->perf.metrics_kobj) {
+		DRM_DEBUG("OA metrics weren't advertised via sysfs\n");
+		return -EINVAL;
+	}
+
+	if (i915_perf_stream_paranoid && !capable(CAP_SYS_ADMIN)) {
+		DRM_DEBUG("Insufficient privileges to add i915 OA config\n");
+		return -EACCES;
+	}
+
+	if ((!args->mux_regs_ptr || !args->n_mux_regs) &&
+	    (!args->boolean_regs_ptr || !args->n_boolean_regs) &&
+	    (!args->flex_regs_ptr || !args->n_flex_regs)) {
+		DRM_DEBUG("No OA registers given\n");
+		return -EINVAL;
+	}
+
+	oa_config = kzalloc(sizeof(*oa_config), GFP_KERNEL);
+	if (!oa_config) {
+		DRM_DEBUG("Failed to allocate memory for the OA config\n");
+		return -ENOMEM;
+	}
+
+	atomic_set(&oa_config->ref_count, 1);
+
+	if (!uuid_is_valid(args->uuid)) {
+		DRM_DEBUG("Invalid uuid format for OA config\n");
+		err = -EINVAL;
+		goto reg_err;
+	}
+
+	/* Last character in oa_config->uuid will be 0 because oa_config is
+	 * kzalloc.
+	 */
+	memcpy(oa_config->uuid, args->uuid, sizeof(args->uuid));
+
+	oa_config->mux_regs_len = args->n_mux_regs;
+	oa_config->mux_regs =
+		alloc_oa_regs(dev_priv,
+			      dev_priv->perf.oa.ops.is_valid_mux_reg,
+			      u64_to_user_ptr(args->mux_regs_ptr),
+			      args->n_mux_regs);
+
+	if (IS_ERR(oa_config->mux_regs)) {
+		DRM_DEBUG("Failed to create OA config for mux_regs\n");
+		err = PTR_ERR(oa_config->mux_regs);
+		goto reg_err;
+	}
+
+	oa_config->b_counter_regs_len = args->n_boolean_regs;
+	oa_config->b_counter_regs =
+		alloc_oa_regs(dev_priv,
+			      dev_priv->perf.oa.ops.is_valid_b_counter_reg,
+			      u64_to_user_ptr(args->boolean_regs_ptr),
+			      args->n_boolean_regs);
+
+	if (IS_ERR(oa_config->b_counter_regs)) {
+		DRM_DEBUG("Failed to create OA config for b_counter_regs\n");
+		err = PTR_ERR(oa_config->b_counter_regs);
+		goto reg_err;
+	}
+
+	if (INTEL_GEN(dev_priv) < 8) {
+		if (args->n_flex_regs != 0) {
+			err = -EINVAL;
+			goto reg_err;
+		}
+	} else {
+		oa_config->flex_regs_len = args->n_flex_regs;
+		oa_config->flex_regs =
+			alloc_oa_regs(dev_priv,
+				      dev_priv->perf.oa.ops.is_valid_flex_reg,
+				      u64_to_user_ptr(args->flex_regs_ptr),
+				      args->n_flex_regs);
+
+		if (IS_ERR(oa_config->flex_regs)) {
+			DRM_DEBUG("Failed to create OA config for flex_regs\n");
+			err = PTR_ERR(oa_config->flex_regs);
+			goto reg_err;
+		}
+	}
+
+	err = mutex_lock_interruptible(&dev_priv->perf.metrics_lock);
+	if (err)
+		goto reg_err;
+
+	/* We shouldn't have too many configs, so this iteration shouldn't be
+	 * too costly.
+	 */
+	idr_for_each_entry(&dev_priv->perf.metrics_idr, tmp, id) {
+		if (!strcmp(tmp->uuid, oa_config->uuid)) {
+			DRM_DEBUG("OA config already exists with this uuid\n");
+			err = -EADDRINUSE;
+			goto sysfs_err;
+		}
+	}
+
+	err = create_dynamic_oa_sysfs_entry(dev_priv, oa_config);
+	if (err) {
+		DRM_DEBUG("Failed to create sysfs entry for OA config\n");
+		goto sysfs_err;
+	}
+
+	/* Config id 0 is invalid, id 1 for kernel stored test config. */
+	oa_config->id = idr_alloc(&dev_priv->perf.metrics_idr,
+				  oa_config, 2,
+				  0, GFP_KERNEL);
+	if (oa_config->id < 0) {
+		DRM_DEBUG("Failed to create sysfs entry for OA config\n");
+		err = oa_config->id;
+		goto sysfs_err;
+	}
+
+	mutex_unlock(&dev_priv->perf.metrics_lock);
+
+	return oa_config->id;
+
+sysfs_err:
+	mutex_unlock(&dev_priv->perf.metrics_lock);
+reg_err:
+	put_oa_config(dev_priv, oa_config);
+	DRM_DEBUG("Failed to add new OA config\n");
+	return err;
+}
+
+/**
+ * i915_perf_remove_config_ioctl - DRM ioctl() for userspace to remove an OA config
+ * @dev: drm device
+ * @data: ioctl data (pointer to u64 integer) copied from userspace
+ * @file: drm file
+ *
+ * Configs can be removed while being used, the will stop appearing in sysfs
+ * and their content will be freed when the stream using the config is closed.
+ *
+ * Returns: 0 on success or a negative error code on failure.
+ */
+int i915_perf_remove_config_ioctl(struct drm_device *dev, void *data,
+				  struct drm_file *file)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	u64 *arg = data;
+	struct i915_oa_config *oa_config;
+	int ret;
+
+	if (!dev_priv->perf.initialized) {
+		DRM_DEBUG("i915 perf interface not available for this system\n");
+		return -ENOTSUPP;
+	}
+
+	if (i915_perf_stream_paranoid && !capable(CAP_SYS_ADMIN)) {
+		DRM_DEBUG("Insufficient privileges to remove i915 OA config\n");
+		return -EACCES;
+	}
+
+	ret = mutex_lock_interruptible(&dev_priv->perf.metrics_lock);
+	if (ret)
+		goto lock_err;
+
+	oa_config = idr_find(&dev_priv->perf.metrics_idr, *arg);
+	if (!oa_config) {
+		DRM_DEBUG("Failed to remove unknown OA config\n");
+		ret = -ENOENT;
+		goto config_err;
+	}
+
+	GEM_BUG_ON(*arg != oa_config->id);
+
+	sysfs_remove_group(dev_priv->perf.metrics_kobj,
+			   &oa_config->sysfs_metric);
+
+	idr_remove(&dev_priv->perf.metrics_idr, *arg);
+	put_oa_config(dev_priv, oa_config);
+
+config_err:
+	mutex_unlock(&dev_priv->perf.metrics_lock);
+lock_err:
+	return ret;
+}
+
 static struct ctl_table oa_table[] = {
 	{
 	 .procname = "perf_stream_paranoid",
@@ -3010,9 +3385,14 @@ static struct ctl_table dev_root[] = {
  */
 void i915_perf_init(struct drm_i915_private *dev_priv)
 {
-	dev_priv->perf.oa.n_builtin_sets = 0;
+	dev_priv->perf.oa.timestamp_frequency = 0;
 
 	if (IS_HASWELL(dev_priv)) {
+		dev_priv->perf.oa.ops.is_valid_b_counter_reg =
+			gen7_is_valid_b_counter_addr;
+		dev_priv->perf.oa.ops.is_valid_mux_reg =
+			hsw_is_valid_mux_addr;
+		dev_priv->perf.oa.ops.is_valid_flex_reg = NULL;
 		dev_priv->perf.oa.ops.init_oa_buffer = gen7_init_oa_buffer;
 		dev_priv->perf.oa.ops.enable_metric_set = hsw_enable_metric_set;
 		dev_priv->perf.oa.ops.disable_metric_set = hsw_disable_metric_set;
@@ -3025,9 +3405,6 @@ void i915_perf_init(struct drm_i915_private *dev_priv)
 		dev_priv->perf.oa.timestamp_frequency = 12500000;
 
 		dev_priv->perf.oa.oa_formats = hsw_oa_formats;
-
-		dev_priv->perf.oa.n_builtin_sets =
-			i915_oa_n_builtin_metric_sets_hsw;
 	} else if (i915.enable_execlists) {
 		/* Note: that although we could theoretically also support the
 		 * legacy ringbuffer mode on BDW (and earlier iterations of
@@ -3035,6 +3412,22 @@ void i915_perf_init(struct drm_i915_private *dev_priv)
 		 * worth the complexity to maintain now that BDW+ enable
 		 * execlist mode by default.
 		 */
+		dev_priv->perf.oa.ops.is_valid_b_counter_reg =
+			gen7_is_valid_b_counter_addr;
+		dev_priv->perf.oa.ops.is_valid_mux_reg =
+			gen8_is_valid_mux_addr;
+		dev_priv->perf.oa.ops.is_valid_flex_reg =
+			gen8_is_valid_flex_addr;
+
+		dev_priv->perf.oa.ops.init_oa_buffer = gen8_init_oa_buffer;
+		dev_priv->perf.oa.ops.enable_metric_set = gen8_enable_metric_set;
+		dev_priv->perf.oa.ops.disable_metric_set = gen8_disable_metric_set;
+		dev_priv->perf.oa.ops.oa_enable = gen8_oa_enable;
+		dev_priv->perf.oa.ops.oa_disable = gen8_oa_disable;
+		dev_priv->perf.oa.ops.read = gen8_oa_read;
+		dev_priv->perf.oa.ops.oa_hw_tail_read = gen8_oa_hw_tail_read;
+
+		dev_priv->perf.oa.oa_formats = gen8_plus_oa_formats;
 
 		if (IS_GEN8(dev_priv)) {
 			dev_priv->perf.oa.ctx_oactxctrl_offset = 0x120;
@@ -3043,85 +3436,35 @@ void i915_perf_init(struct drm_i915_private *dev_priv)
 			dev_priv->perf.oa.timestamp_frequency = 12500000;
 
 			dev_priv->perf.oa.gen8_valid_ctx_bit = (1<<25);
-
-			if (IS_BROADWELL(dev_priv)) {
-				dev_priv->perf.oa.n_builtin_sets =
-					i915_oa_n_builtin_metric_sets_bdw;
-				dev_priv->perf.oa.ops.select_metric_set =
-					i915_oa_select_metric_set_bdw;
-			} else if (IS_CHERRYVIEW(dev_priv)) {
-				dev_priv->perf.oa.n_builtin_sets =
-					i915_oa_n_builtin_metric_sets_chv;
-				dev_priv->perf.oa.ops.select_metric_set =
-					i915_oa_select_metric_set_chv;
+			if (IS_CHERRYVIEW(dev_priv)) {
+				dev_priv->perf.oa.ops.is_valid_mux_reg =
+					chv_is_valid_mux_addr;
 			}
 		} else if (IS_GEN9(dev_priv)) {
 			dev_priv->perf.oa.ctx_oactxctrl_offset = 0x128;
 			dev_priv->perf.oa.ctx_flexeu0_offset = 0x3de;
 
-			dev_priv->perf.oa.timestamp_frequency = 12000000;
-
 			dev_priv->perf.oa.gen8_valid_ctx_bit = (1<<16);
 
-			if (IS_SKL_GT2(dev_priv)) {
-				dev_priv->perf.oa.n_builtin_sets =
-					i915_oa_n_builtin_metric_sets_sklgt2;
-				dev_priv->perf.oa.ops.select_metric_set =
-					i915_oa_select_metric_set_sklgt2;
-			} else if (IS_SKL_GT3(dev_priv)) {
-				dev_priv->perf.oa.n_builtin_sets =
-					i915_oa_n_builtin_metric_sets_sklgt3;
-				dev_priv->perf.oa.ops.select_metric_set =
-					i915_oa_select_metric_set_sklgt3;
-			} else if (IS_SKL_GT4(dev_priv)) {
-				dev_priv->perf.oa.n_builtin_sets =
-					i915_oa_n_builtin_metric_sets_sklgt4;
-				dev_priv->perf.oa.ops.select_metric_set =
-					i915_oa_select_metric_set_sklgt4;
-			} else if (IS_BROXTON(dev_priv)) {
+			switch (dev_priv->info.platform) {
+			case INTEL_BROXTON:
+			case INTEL_GEMINILAKE:
 				dev_priv->perf.oa.timestamp_frequency = 19200000;
-
-				dev_priv->perf.oa.n_builtin_sets =
-					i915_oa_n_builtin_metric_sets_bxt;
-				dev_priv->perf.oa.ops.select_metric_set =
-					i915_oa_select_metric_set_bxt;
-			} else if (IS_KBL_GT2(dev_priv)) {
-				dev_priv->perf.oa.n_builtin_sets =
-					i915_oa_n_builtin_metric_sets_kblgt2;
-				dev_priv->perf.oa.ops.select_metric_set =
-					i915_oa_select_metric_set_kblgt2;
-			} else if (IS_KBL_GT3(dev_priv)) {
-				dev_priv->perf.oa.n_builtin_sets =
-					i915_oa_n_builtin_metric_sets_kblgt3;
-				dev_priv->perf.oa.ops.select_metric_set =
-					i915_oa_select_metric_set_kblgt3;
-			} else if (IS_GEMINILAKE(dev_priv)) {
-				dev_priv->perf.oa.timestamp_frequency = 19200000;
-
-				dev_priv->perf.oa.n_builtin_sets =
-					i915_oa_n_builtin_metric_sets_glk;
-				dev_priv->perf.oa.ops.select_metric_set =
-					i915_oa_select_metric_set_glk;
+				break;
+			case INTEL_SKYLAKE:
+			case INTEL_KABYLAKE:
+				dev_priv->perf.oa.timestamp_frequency = 12000000;
+				break;
+			default:
+				/* Leave timestamp_frequency to 0 so we can
+				 * detect unsupported platforms.
+				 */
+				break;
 			}
 		}
-
-		if (dev_priv->perf.oa.n_builtin_sets) {
-			dev_priv->perf.oa.ops.init_oa_buffer = gen8_init_oa_buffer;
-			dev_priv->perf.oa.ops.enable_metric_set =
-				gen8_enable_metric_set;
-			dev_priv->perf.oa.ops.disable_metric_set =
-				gen8_disable_metric_set;
-			dev_priv->perf.oa.ops.oa_enable = gen8_oa_enable;
-			dev_priv->perf.oa.ops.oa_disable = gen8_oa_disable;
-			dev_priv->perf.oa.ops.read = gen8_oa_read;
-			dev_priv->perf.oa.ops.oa_hw_tail_read =
-				gen8_oa_hw_tail_read;
-
-			dev_priv->perf.oa.oa_formats = gen8_plus_oa_formats;
-		}
 	}
 
-	if (dev_priv->perf.oa.n_builtin_sets) {
+	if (dev_priv->perf.oa.timestamp_frequency) {
 		hrtimer_init(&dev_priv->perf.oa.poll_check_timer,
 				CLOCK_MONOTONIC, HRTIMER_MODE_REL);
 		dev_priv->perf.oa.poll_check_timer.function = oa_poll_check_timer_cb;
@@ -3135,10 +3478,23 @@ void i915_perf_init(struct drm_i915_private *dev_priv)
 			dev_priv->perf.oa.timestamp_frequency / 2;
 		dev_priv->perf.sysctl_header = register_sysctl_table(dev_root);
 
+		mutex_init(&dev_priv->perf.metrics_lock);
+		idr_init(&dev_priv->perf.metrics_idr);
+
 		dev_priv->perf.initialized = true;
 	}
 }
 
+static int destroy_config(int id, void *p, void *data)
+{
+	struct drm_i915_private *dev_priv = data;
+	struct i915_oa_config *oa_config = p;
+
+	put_oa_config(dev_priv, oa_config);
+
+	return 0;
+}
+
 /**
  * i915_perf_fini - Counter part to i915_perf_init()
  * @dev_priv: i915 device instance
@@ -3148,6 +3504,9 @@ void i915_perf_fini(struct drm_i915_private *dev_priv)
 	if (!dev_priv->perf.initialized)
 		return;
 
+	idr_for_each(&dev_priv->perf.metrics_idr, destroy_config, dev_priv);
+	idr_destroy(&dev_priv->perf.metrics_idr);
+
 	unregister_sysctl_table(dev_priv->perf.sysctl_header);
 
 	memset(&dev_priv->perf.oa.ops, 0, sizeof(dev_priv->perf.oa.ops));