drm/i915/perf: enable perf support on CNL

This adds new registers to the whitelist to configs emitted from userspace.
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171110190845.32574-6-lionel.g.landwerlin@intel.com

drivers/gpu/drm/i915/Makefile

@@ -163,7 +163,8 @@ i915-y += i915_perf.o \
 	  i915_oa_kblgt3.o \
 	  i915_oa_glk.o \
 	  i915_oa_cflgt2.o \
-	  i915_oa_cflgt3.o
+	  i915_oa_cflgt3.o \
+	  i915_oa_cnl.o
 
 ifeq ($(CONFIG_DRM_I915_GVT),y)
 i915-y += intel_gvt.o

drivers/gpu/drm/i915/i915_oa_cnl.c

+/*
+ * Autogenerated file by GPU Top : https://github.com/rib/gputop
+ * DO NOT EDIT manually!
+ *
+ *
+ * Copyright (c) 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include <linux/sysfs.h>
+
+#include "i915_drv.h"
+#include "i915_oa_cnl.h"
+
+static const struct i915_oa_reg b_counter_config_test_oa[] = {
+	{ _MMIO(0x2740), 0x00000000 },
+	{ _MMIO(0x2710), 0x00000000 },
+	{ _MMIO(0x2714), 0xf0800000 },
+	{ _MMIO(0x2720), 0x00000000 },
+	{ _MMIO(0x2724), 0xf0800000 },
+	{ _MMIO(0x2770), 0x00000004 },
+	{ _MMIO(0x2774), 0x0000ffff },
+	{ _MMIO(0x2778), 0x00000003 },
+	{ _MMIO(0x277c), 0x0000ffff },
+	{ _MMIO(0x2780), 0x00000007 },
+	{ _MMIO(0x2784), 0x0000ffff },
+	{ _MMIO(0x2788), 0x00100002 },
+	{ _MMIO(0x278c), 0x0000fff7 },
+	{ _MMIO(0x2790), 0x00100002 },
+	{ _MMIO(0x2794), 0x0000ffcf },
+	{ _MMIO(0x2798), 0x00100082 },
+	{ _MMIO(0x279c), 0x0000ffef },
+	{ _MMIO(0x27a0), 0x001000c2 },
+	{ _MMIO(0x27a4), 0x0000ffe7 },
+	{ _MMIO(0x27a8), 0x00100001 },
+	{ _MMIO(0x27ac), 0x0000ffe7 },
+};
+
+static const struct i915_oa_reg flex_eu_config_test_oa[] = {
+};
+
+static const struct i915_oa_reg mux_config_test_oa[] = {
+	{ _MMIO(0xd04), 0x00000200 },
+	{ _MMIO(0x9884), 0x00000007 },
+	{ _MMIO(0x9888), 0x17060000 },
+	{ _MMIO(0x9840), 0x00000000 },
+	{ _MMIO(0x9884), 0x00000007 },
+	{ _MMIO(0x9888), 0x13034000 },
+	{ _MMIO(0x9884), 0x00000007 },
+	{ _MMIO(0x9888), 0x07060066 },
+	{ _MMIO(0x9884), 0x00000007 },
+	{ _MMIO(0x9888), 0x05060000 },
+	{ _MMIO(0x9884), 0x00000007 },
+	{ _MMIO(0x9888), 0x0f080040 },
+	{ _MMIO(0x9884), 0x00000007 },
+	{ _MMIO(0x9888), 0x07091000 },
+	{ _MMIO(0x9884), 0x00000007 },
+	{ _MMIO(0x9888), 0x0f041000 },
+	{ _MMIO(0x9884), 0x00000007 },
+	{ _MMIO(0x9888), 0x1d004000 },
+	{ _MMIO(0x9884), 0x00000007 },
+	{ _MMIO(0x9888), 0x35000000 },
+	{ _MMIO(0x9884), 0x00000007 },
+	{ _MMIO(0x9888), 0x49000000 },
+	{ _MMIO(0x9884), 0x00000007 },
+	{ _MMIO(0x9888), 0x3d000000 },
+	{ _MMIO(0x9884), 0x00000007 },
+	{ _MMIO(0x9888), 0x31000000 },
+};
+
+static ssize_t
+show_test_oa_id(struct device *kdev, struct device_attribute *attr, char *buf)
+{
+	return sprintf(buf, "1\n");
+}
+
+void
+i915_perf_load_test_config_cnl(struct drm_i915_private *dev_priv)
+{
+	strncpy(dev_priv->perf.oa.test_config.uuid,
+		"db41edd4-d8e7-4730-ad11-b9a2d6833503",
+		UUID_STRING_LEN);
+	dev_priv->perf.oa.test_config.id = 1;
+
+	dev_priv->perf.oa.test_config.mux_regs = mux_config_test_oa;
+	dev_priv->perf.oa.test_config.mux_regs_len = ARRAY_SIZE(mux_config_test_oa);
+
+	dev_priv->perf.oa.test_config.b_counter_regs = b_counter_config_test_oa;
+	dev_priv->perf.oa.test_config.b_counter_regs_len = ARRAY_SIZE(b_counter_config_test_oa);
+
+	dev_priv->perf.oa.test_config.flex_regs = flex_eu_config_test_oa;
+	dev_priv->perf.oa.test_config.flex_regs_len = ARRAY_SIZE(flex_eu_config_test_oa);
+
+	dev_priv->perf.oa.test_config.sysfs_metric.name = "db41edd4-d8e7-4730-ad11-b9a2d6833503";
+	dev_priv->perf.oa.test_config.sysfs_metric.attrs = dev_priv->perf.oa.test_config.attrs;
+
+	dev_priv->perf.oa.test_config.attrs[0] = &dev_priv->perf.oa.test_config.sysfs_metric_id.attr;
+
+	dev_priv->perf.oa.test_config.sysfs_metric_id.attr.name = "id";
+	dev_priv->perf.oa.test_config.sysfs_metric_id.attr.mode = 0444;
+	dev_priv->perf.oa.test_config.sysfs_metric_id.show = show_test_oa_id;
+}

drivers/gpu/drm/i915/i915_oa_cnl.h

+/*
+ * Autogenerated file by GPU Top : https://github.com/rib/gputop
+ * DO NOT EDIT manually!
+ *
+ *
+ * Copyright (c) 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#ifndef __I915_OA_CNL_H__
+#define __I915_OA_CNL_H__
+
+extern void i915_perf_load_test_config_cnl(struct drm_i915_private *dev_priv);
+
+#endif

drivers/gpu/drm/i915/i915_perf.c

@@ -208,6 +208,7 @@
 #include "i915_oa_glk.h"
 #include "i915_oa_cflgt2.h"
 #include "i915_oa_cflgt3.h"
+#include "i915_oa_cnl.h"
 
 /* HW requires this to be a power of two, between 128k and 16M, though driver
  * is currently generally designed assuming the largest 16M size is used such
@@ -1852,7 +1853,7 @@ static int gen8_enable_metric_set(struct drm_i915_private *dev_priv,
 	 * be read back from automatically triggered reports, as part of the
 	 * RPT_ID field.
 	 */
-	if (IS_GEN9(dev_priv)) {
+	if (IS_GEN9(dev_priv) || IS_GEN10(dev_priv)) {
 		I915_WRITE(GEN8_OA_DEBUG,
 			   _MASKED_BIT_ENABLE(GEN9_OA_DEBUG_DISABLE_CLK_RATIO_REPORTS |
 					      GEN9_OA_DEBUG_INCLUDE_CLK_RATIO));
@@ -1885,6 +1886,16 @@ static void gen8_disable_metric_set(struct drm_i915_private *dev_priv)
 
 }
 
+static void gen10_disable_metric_set(struct drm_i915_private *dev_priv)
+{
+	/* Reset all contexts' slices/subslices configurations. */
+	gen8_configure_all_contexts(dev_priv, NULL, false);
+
+	/* Make sure we disable noa to save power. */
+	I915_WRITE(RPM_CONFIG1,
+		   I915_READ(RPM_CONFIG1) & ~GEN10_GT_NOA_ENABLE);
+}
+
 static void gen7_oa_enable(struct drm_i915_private *dev_priv)
 {
 	/*
@@ -2937,6 +2948,8 @@ void i915_perf_register(struct drm_i915_private *dev_priv)
 			i915_perf_load_test_config_cflgt2(dev_priv);
 		if (IS_CFL_GT3(dev_priv))
 			i915_perf_load_test_config_cflgt3(dev_priv);
+	} else if (IS_CANNONLAKE(dev_priv)) {
+		i915_perf_load_test_config_cnl(dev_priv);
 	}
 
 	if (dev_priv->perf.oa.test_config.id == 0)
@@ -3022,6 +3035,12 @@ static bool gen8_is_valid_mux_addr(struct drm_i915_private *dev_priv, u32 addr)
 		(addr >= RPM_CONFIG0.reg && addr <= NOA_CONFIG(8).reg);
 }
 
+static bool gen10_is_valid_mux_addr(struct drm_i915_private *dev_priv, u32 addr)
+{
+	return gen8_is_valid_mux_addr(dev_priv, addr) ||
+		(addr >= OA_PERFCNT3_LO.reg && addr <= OA_PERFCNT4_HI.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) ||
@@ -3475,6 +3494,26 @@ void i915_perf_init(struct drm_i915_private *dev_priv)
 			default:
 				break;
 			}
+		} else if (IS_GEN10(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 =
+				gen10_is_valid_mux_addr;
+			dev_priv->perf.oa.ops.is_valid_flex_reg =
+				gen8_is_valid_flex_addr;
+
+			dev_priv->perf.oa.ops.enable_metric_set = gen8_enable_metric_set;
+			dev_priv->perf.oa.ops.disable_metric_set = gen10_disable_metric_set;
+
+			dev_priv->perf.oa.ctx_oactxctrl_offset = 0x128;
+			dev_priv->perf.oa.ctx_flexeu0_offset = 0x3de;
+
+			dev_priv->perf.oa.gen8_valid_ctx_bit = (1<<16);
+
+			/* Default frequency, although we need to read it from
+			 * the register as it might vary between parts.
+			 */
+			dev_priv->perf.oa.timestamp_frequency = 12000000;
 		}
 	}
 

drivers/gpu/drm/i915/i915_reg.h

@@ -1106,6 +1106,10 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
 #define OA_PERFCNT1_HI      _MMIO(0x91BC)
 #define OA_PERFCNT2_LO      _MMIO(0x91C0)
 #define OA_PERFCNT2_HI      _MMIO(0x91C4)
+#define OA_PERFCNT3_LO      _MMIO(0x91C8)
+#define OA_PERFCNT3_HI      _MMIO(0x91CC)
+#define OA_PERFCNT4_LO      _MMIO(0x91D8)
+#define OA_PERFCNT4_HI      _MMIO(0x91DC)
 
 #define OA_PERFMATRIX_LO    _MMIO(0x91C8)
 #define OA_PERFMATRIX_HI    _MMIO(0x91CC)
@@ -1113,6 +1117,7 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
 /* RPM unit config (Gen8+) */
 #define RPM_CONFIG0	    _MMIO(0x0D00)
 #define RPM_CONFIG1	    _MMIO(0x0D04)
+#define  GEN10_GT_NOA_ENABLE  (1 << 9)
 
 /* RCP unit config (Gen8+) */
 #define RCP_CONFIG	    _MMIO(0x0D08)