[PATCH] drm/i915/display: Introduce Display Metrics info
Kumar, Naveen1
naveen1.kumar at intel.com
Mon May 6 10:03:17 UTC 2024
>-----Original Message-----
>From: Vivi, Rodrigo <rodrigo.vivi at intel.com>
>Sent: Saturday, April 6, 2024 3:39 AM
>To: intel-gfx at lists.freedesktop.org
>Cc: Vivi, Rodrigo <rodrigo.vivi at intel.com>; Shankar, Uma
><uma.shankar at intel.com>; Kulkarni, Vandita <vandita.kulkarni at intel.com>;
>Kumar, Naveen1 <naveen1.kumar at intel.com>; Nikula, Jani
><jani.nikula at intel.com>; Belgaumkar, Vinay <vinay.belgaumkar at intel.com>
>Subject: [PATCH] drm/i915/display: Introduce Display Metrics info
>
>Introduce a display metrics information through debugfs for a better view of
>the vblank and page flips, in special Async flips behavior.
>
>There is currently an overall expectation that whenever
>vblank_mode=0 is used with an graphics application, that automatically
>async_flips are happening. However, while implementing the Display Metrics
>for GuC SLPC, it was observed that it is not necessarily true for many of the
>expected cases.
>
>So, while the GuC SLPC side of the metrics doesn't get ready, let's at least bring
>the debugfs view of it so we can work to understand and fix any potential issue
>around our async vblanks.
>
>Please notice that the every struct here follows exactly the GuC shared data
>buffer, so the next step of the integration would be smooth and almost
>transparent to this intel_metrics on the display side.
>
>Cc: Uma Shankar <uma.shankar at intel.com>
>Cc: Vandita Kulkarni <vandita.kulkarni at intel.com>
>Cc: Naveen Kumar <naveen1.kumar at intel.com>
>Cc: Jani Nikula <jani.nikula at intel.com>
>Cc: Vinay Belgaumkar <vinay.belgaumkar at intel.com>
>Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
>---
> drivers/gpu/drm/i915/Makefile | 1 +
> drivers/gpu/drm/i915/display/intel_display.c | 15 +-
> .../gpu/drm/i915/display/intel_display_core.h | 2 +
> .../drm/i915/display/intel_display_debugfs.c | 12 +
> .../drm/i915/display/intel_display_driver.c | 5 +
> .../gpu/drm/i915/display/intel_display_irq.c | 3 +
> drivers/gpu/drm/i915/display/intel_metrics.c | 356 ++++++++++++++++++
>drivers/gpu/drm/i915/display/intel_metrics.h | 27 ++
> .../drm/i915/display/skl_universal_plane.c | 3 +
> drivers/gpu/drm/xe/Makefile | 1 +
> 10 files changed, 424 insertions(+), 1 deletion(-) create mode 100644
>drivers/gpu/drm/i915/display/intel_metrics.c
> create mode 100644 drivers/gpu/drm/i915/display/intel_metrics.h
>
>diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
>index af9e871daf1d..a3c8d9f5614c 100644
>--- a/drivers/gpu/drm/i915/Makefile
>+++ b/drivers/gpu/drm/i915/Makefile
>@@ -291,6 +291,7 @@ i915-y += \
> display/intel_link_bw.o \
> display/intel_load_detect.o \
> display/intel_lpe_audio.o \
>+ display/intel_metrics.o \
> display/intel_modeset_lock.o \
> display/intel_modeset_setup.o \
> display/intel_modeset_verify.o \
>diff --git a/drivers/gpu/drm/i915/display/intel_display.c
>b/drivers/gpu/drm/i915/display/intel_display.c
>index a481c9218138..ca30b8d48e1f 100644
>--- a/drivers/gpu/drm/i915/display/intel_display.c
>+++ b/drivers/gpu/drm/i915/display/intel_display.c
>@@ -94,6 +94,7 @@
> #include "intel_link_bw.h"
> #include "intel_lvds.h"
> #include "intel_lvds_regs.h"
>+#include "intel_metrics.h"
> #include "intel_modeset_setup.h"
> #include "intel_modeset_verify.h"
> #include "intel_overlay.h"
>@@ -1021,11 +1022,15 @@ static void intel_post_plane_update(struct
>intel_atomic_state *state,
> struct intel_crtc *crtc)
> {
> struct drm_i915_private *dev_priv = to_i915(state->base.dev);
>+ struct intel_display *display = &dev_priv->display;
> const struct intel_crtc_state *old_crtc_state =
> intel_atomic_get_old_crtc_state(state, crtc);
> const struct intel_crtc_state *new_crtc_state =
> intel_atomic_get_new_crtc_state(state, crtc);
> enum pipe pipe = crtc->pipe;
>+ const struct intel_plane_state __maybe_unused *plane_state;
>+ struct intel_plane *plane;
>+ int i;
>
> intel_psr_post_plane_update(state, crtc);
>
>@@ -1057,6 +1062,12 @@ static void intel_post_plane_update(struct
>intel_atomic_state *state,
>
> if (audio_enabling(old_crtc_state, new_crtc_state))
> intel_encoders_audio_enable(state, crtc);
>+
>+ if (!new_crtc_state->do_async_flip) {
>+ for_each_new_intel_plane_in_state(state, plane, plane_state, i)
>+ intel_metrics_flip(display, new_crtc_state, plane->id,
>+ false);
>+ }
> }
>
> static void intel_crtc_enable_flip_done(struct intel_atomic_state *state, @@ -
>7139,6 +7150,7 @@ static void intel_atomic_commit_tail(struct
>intel_atomic_state *state) {
> struct drm_device *dev = state->base.dev;
> struct drm_i915_private *dev_priv = to_i915(dev);
>+ struct intel_display *display = &dev_priv->display;
> struct intel_crtc_state *new_crtc_state, *old_crtc_state;
> struct intel_crtc *crtc;
> struct intel_power_domain_mask put_domains[I915_MAX_PIPES] = {};
>@@ -7261,7 +7273,6 @@ static void intel_atomic_commit_tail(struct
>intel_atomic_state *state)
> for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
> if (new_crtc_state->do_async_flip)
> intel_crtc_disable_flip_done(state, crtc);
>-
> intel_color_wait_commit(new_crtc_state);
> }
>
>@@ -7314,6 +7325,8 @@ static void intel_atomic_commit_tail(struct
>intel_atomic_state *state)
> * FIXME get rid of this funny new->old swapping
> */
> old_crtc_state->dsb = fetch_and_zero(&new_crtc_state->dsb);
>+
>+ intel_metrics_refresh_info(display, new_crtc_state);
> }
>
> /* Underruns don't always raise interrupts, so check manually */ diff --
>git a/drivers/gpu/drm/i915/display/intel_display_core.h
>b/drivers/gpu/drm/i915/display/intel_display_core.h
>index 2167dbee5eea..992db9098566 100644
>--- a/drivers/gpu/drm/i915/display/intel_display_core.h
>+++ b/drivers/gpu/drm/i915/display/intel_display_core.h
>@@ -42,6 +42,7 @@ struct intel_cdclk_vals; struct intel_color_funcs; struct
>intel_crtc; struct intel_crtc_state;
>+struct intel_display_metrics;
> struct intel_dmc;
> struct intel_dpll_funcs;
> struct intel_dpll_mgr;
>@@ -530,6 +531,7 @@ struct intel_display {
> struct intel_fbc *fbc[I915_MAX_FBCS];
> struct intel_frontbuffer_tracking fb_tracking;
> struct intel_hotplug hotplug;
>+ struct intel_display_metrics *metrics;
> struct intel_opregion *opregion;
> struct intel_overlay *overlay;
> struct intel_display_params params;
>diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
>b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
>index 3e364891dcd0..f05b9a9ddee0 100644
>--- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
>+++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
>@@ -30,6 +30,7 @@
> #include "intel_hdcp.h"
> #include "intel_hdmi.h"
> #include "intel_hotplug.h"
>+#include "intel_metrics.h"
> #include "intel_panel.h"
> #include "intel_psr.h"
> #include "intel_psr_regs.h"
>@@ -642,6 +643,16 @@ static int i915_display_capabilities(struct seq_file *m,
>void *unused)
> return 0;
> }
>
>+static int i915_display_metrics(struct seq_file *m, void *unused) {
>+ struct drm_i915_private *i915 = node_to_i915(m->private);
>+ struct drm_printer p = drm_seq_file_printer(m);
>+
>+ intel_metrics_show(&i915->display, &p);
>+
>+ return 0;
>+}
>+
> static int i915_shared_dplls_info(struct seq_file *m, void *unused) {
> struct drm_i915_private *dev_priv = node_to_i915(m->private); @@ -
>1059,6 +1070,7 @@ static const struct drm_info_list
>intel_display_debugfs_list[] = {
> {"i915_power_domain_info", i915_power_domain_info, 0},
> {"i915_display_info", i915_display_info, 0},
> {"i915_display_capabilities", i915_display_capabilities, 0},
>+ {"i915_display_metrics", i915_display_metrics, 0},
> {"i915_shared_dplls_info", i915_shared_dplls_info, 0},
> {"i915_dp_mst_info", i915_dp_mst_info, 0},
> {"i915_ddb_info", i915_ddb_info, 0},
>diff --git a/drivers/gpu/drm/i915/display/intel_display_driver.c
>b/drivers/gpu/drm/i915/display/intel_display_driver.c
>index 87dd07e0d138..767b2d5b3826 100644
>--- a/drivers/gpu/drm/i915/display/intel_display_driver.c
>+++ b/drivers/gpu/drm/i915/display/intel_display_driver.c
>@@ -46,6 +46,7 @@
> #include "intel_hdcp.h"
> #include "intel_hotplug.h"
> #include "intel_hti.h"
>+#include "intel_metrics.h"
> #include "intel_modeset_lock.h"
> #include "intel_modeset_setup.h"
> #include "intel_opregion.h"
>@@ -514,6 +515,8 @@ int intel_display_driver_probe(struct
>drm_i915_private *i915)
>
> intel_overlay_setup(i915);
>
>+ intel_metrics_init(&i915->display);
>+
> ret = intel_fbdev_init(&i915->drm);
> if (ret)
> return ret;
>@@ -611,6 +614,8 @@ void intel_display_driver_remove_noirq(struct
>drm_i915_private *i915)
>
> intel_dp_tunnel_mgr_cleanup(i915);
>
>+ intel_metrics_fini(&i915->display);
>+
> intel_overlay_cleanup(i915);
>
> intel_gmbus_teardown(i915);
>diff --git a/drivers/gpu/drm/i915/display/intel_display_irq.c
>b/drivers/gpu/drm/i915/display/intel_display_irq.c
>index f846c5b108b5..202400a771b2 100644
>--- a/drivers/gpu/drm/i915/display/intel_display_irq.c
>+++ b/drivers/gpu/drm/i915/display/intel_display_irq.c
>@@ -18,6 +18,7 @@
> #include "intel_fifo_underrun.h"
> #include "intel_gmbus.h"
> #include "intel_hotplug_irq.h"
>+#include "intel_metrics.h"
> #include "intel_pmdemand.h"
> #include "intel_psr.h"
> #include "intel_psr_regs.h"
>@@ -25,8 +26,10 @@
> static void
> intel_handle_vblank(struct drm_i915_private *dev_priv, enum pipe pipe) {
>+ struct intel_display *display = &dev_priv->display;
> struct intel_crtc *crtc = intel_crtc_for_pipe(dev_priv, pipe);
>
>+ intel_metrics_vblank(display, crtc);
> drm_crtc_handle_vblank(&crtc->base);
> }
>
>diff --git a/drivers/gpu/drm/i915/display/intel_metrics.c
>b/drivers/gpu/drm/i915/display/intel_metrics.c
>new file mode 100644
>index 000000000000..2cb2b8189b25
>--- /dev/null
>+++ b/drivers/gpu/drm/i915/display/intel_metrics.c
>@@ -0,0 +1,356 @@
>+// SPDX-License-Identifier: MIT
>+/*
>+ * Copyright © 2024 Intel Corporation
>+ */
>+
>+#include "intel_metrics.h"
>+
>+#include <drm/drm_modes.h>
>+#include <drm/drm_print.h>
>+
>+#include "i915_drv.h"
>+#include "intel_de.h"
>+#include "intel_display_types.h"
>+
>+/**
>+ * Display Metrics
>+ *
>+ * Provide some display activity overview such as active refresh rates,
>+ * vblank activity and page flip activities.
>+ * For now it is informative debug only, but later it will be expanded
>+ * to be used for GT frequency selection by GuC SLPC.
>+ */
>+
>+/*
>+ * An event using an work queue is used to avoid any disturbance in the
>+ * critical path that could cause performance impacts.
>+ */
>+struct display_event {
>+ struct work_struct work;
>+ struct drm_i915_private *i915;
>+ struct intel_display *display;
>+ bool is_vblank;
>+ int pipe;
>+ int plane;
>+ bool async_flip;
>+};
>+
>+/*
>+ * Although we could simply save this inside our crtc structs, we are
>+ * already mimicking the GuC SLPC defition of the display data, for
>+future
>+ * usage.
>+ */
>+#define MAX_PIPES 8
>+#define MAX_PLANES_PER_PIPE 8
>+
>+struct display_global_info {
>+ u32 version:8;
>+ u32 num_pipes:4;
>+ u32 num_planes_per_pipe:4;
>+ u32 reserved_1:16;
>+ u32 refresh_count:16;
>+ u32 vblank_count:16;
>+ u32 flip_count:16;
>+ u32 reserved_2:16;
>+ u32 reserved_3[13];
>+} __packed;
>+
>+struct display_refresh_info {
>+ u32 refresh_interval:16;
>+ u32 is_variable:1;
>+ u32 reserved:15;
>+} __packed;
>+
>+/*
>+ * When used with GuC SLPC, the host must update each 32-bit part with
>+a single
>+ * atomic write so that SLPC will read the contained bit fields together.
>+ * The host must update the two parts in order - total flip count and
>+timestamp
>+ * first, vsync and async flip counts second.
>+ * Hence, these items are not defined with individual bitfields.
>+ */
>+#define FLIP_P1_LAST REG_GENMASK(31, 7)
>+#define FLIP_P1_TOTAL_COUNT REG_GENMASK(6, 0)
>+#define FLIP_P2_ASYNC_COUNT REG_GENMASK(31, 16)
>+#define FLIP_P2_VSYNC_COUNT REG_GENMASK(15, 0)
>+
>+struct display_flip_metrics {
>+ u32 part1;
>+ u32 part2;
>+} __packed;
>+
>+/*
>+ * When used with GuC SLPC, the host must update each 32-bit part with
>+a single
>+ * atomic write, so that SLPC will read the count and timestamp together.
>+ * Hence, this item is not defined with individual bitfields.
>+ */
>+#define VBLANK_LAST REG_GENMASK(31, 7)
>+#define VBLANK_COUNT REG_GENMASK(6, 0)
>+
>+struct intel_display_metrics {
>+ struct display_global_info global_info;
>+ struct display_refresh_info refresh_info[MAX_PIPES];
>+ u32 vblank_metrics[MAX_PIPES];
>+ struct display_flip_metrics
>+ flip_metrics[MAX_PIPES][MAX_PLANES_PER_PIPE];
>+} __packed;
>+
>+/**
>+ * intel_metrics_refresh_info - Refresh rate information
>+ * @display: Pointer to the intel_display struct that is in use by the gfx device.
>+ * @crtc_state: New CRTC state upon a modeset.
>+ *
>+ * To be called on a modeset. It then saves the current refresh
>+interval in
>+ * micro seconds.
>+ */
>+void intel_metrics_refresh_info(struct intel_display *display,
>+ struct intel_crtc_state *crtc_state) {
>+ struct intel_display_metrics *metrics = display->metrics;
>+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
>+ struct drm_display_mode *mode = &crtc_state->hw.adjusted_mode;
>+ u32 interval_us;
>+
>+ if (!display->metrics)
>+ return;
>+
>+ interval_us = crtc_state->hw.active ? DIV_ROUND_UP(1000000,
>+ drm_mode_vrefresh(mode)) :
>0;
>+
>+ metrics->refresh_info[crtc->pipe].refresh_interval = interval_us;
>+ metrics->refresh_info[crtc->pipe].is_variable = crtc_state-
>>uapi.vrr_enabled;
>+ metrics->global_info.refresh_count += 1; }
>+
>+static void metrics_update_vblank(struct intel_display_metrics *metrics, int
>pipe,
>+ u32 timestamp)
>+{
>+ u32 vblank;
>+
>+ vblank = metrics->vblank_metrics[pipe];
>+
>+ vblank = REG_FIELD_GET(VBLANK_COUNT, vblank);
>+ vblank = REG_FIELD_PREP(VBLANK_COUNT, vblank + 1);
>+ vblank |= REG_FIELD_PREP(VBLANK_LAST, timestamp);
>+
>+ /* Write everything at once in preparation for the GuC SLPC
>requirement */
>+ metrics->vblank_metrics[pipe] = vblank;
>+ metrics->global_info.vblank_count += 1; }
>+
>+static void metrics_update_flip(struct intel_display_metrics *metrics, int pipe,
>+ int plane, bool async_flip, u32 timestamp) {
>+ u32 part1, part2, count;
>+
>+ part1 = metrics->flip_metrics[pipe][plane].part1;
>+ part2 = metrics->flip_metrics[pipe][plane].part2;
>+
>+ part1 = REG_FIELD_GET(FLIP_P1_TOTAL_COUNT, part1);
>+ part1 = REG_FIELD_PREP(FLIP_P1_TOTAL_COUNT, part1 + 1);
>+ part1 |= REG_FIELD_PREP(FLIP_P1_LAST, timestamp);
>+
>+ if (async_flip) {
>+ count = REG_FIELD_GET(FLIP_P2_ASYNC_COUNT, part2);
>+ part2 &= ~FLIP_P2_ASYNC_COUNT;
>+ part2 |= REG_FIELD_PREP(FLIP_P2_ASYNC_COUNT, count + 1);
>+ } else {
>+ count = REG_FIELD_GET(FLIP_P2_VSYNC_COUNT, part2);
>+ part2 &= ~FLIP_P2_VSYNC_COUNT;
>+ part2 |= REG_FIELD_PREP(FLIP_P2_VSYNC_COUNT, count + 1);
>+ }
>+
>+ /*
>+ * Write everything in this way and this order in preparation for the
>+ * GuC SLPC requirement
>+ */
>+ metrics->flip_metrics[pipe][plane].part1 = part1;
>+ metrics->flip_metrics[pipe][plane].part2 = part2;
>+
>+ metrics->global_info.flip_count += 1;
>+}
>+
>+/*
>+ * Let's use the same register GuC SLPC uses for timestamp.
>+ * It uses a register that is outside GT domain so GuC doesn't need
>+ * to wake the GT for reading during SLPC loop.
>+ * This is a single register regarding the GT, so we can read directly
>+ * from here, regarding the GT GuC is in.
>+ */
>+#define MCHBAR_MIRROR_BASE_SNB 0x140000
>+#define MCHBAR_BCLK_COUNT _MMIO(MCHBAR_MIRROR_BASE_SNB
>+ 0x5984)
>+#define MTL_BCLK_COUNT _MMIO(0xc28)
>+#define TIMESTAMP_MASK REG_GENMASK(30, 6)
>+
>+static u32 bclk_read_timestamp(struct drm_i915_private *i915) {
>+ u32 timestamp;
>+
>+ if (DISPLAY_VER(i915) >= 14)
>+ timestamp = intel_de_read(i915, MTL_BCLK_COUNT);
>+ else
>+ timestamp = intel_de_read(i915, MCHBAR_BCLK_COUNT);
>+
>+ return REG_FIELD_GET(TIMESTAMP_MASK, timestamp); }
>+
>+static void display_event_work(struct work_struct *work) {
>+ struct display_event *event = container_of(work, struct display_event,
>work);
>+ struct intel_display *display = event->display;
>+ u32 timestamp;
>+
>+ timestamp = bclk_read_timestamp(event->i915);
>+
>+ if (event->is_vblank) {
>+ metrics_update_vblank(display->metrics, event->pipe,
>timestamp);
>+ } else {
>+ metrics_update_flip(display->metrics, event->pipe, event-
>>plane,
>+ event->async_flip, timestamp);
>+ }
>+
>+ kfree(event);
>+}
>+
>+void intel_metrics_init(struct intel_display *display) {
>+ struct intel_display_metrics *metrics;
>+
>+ metrics = kzalloc(sizeof(*metrics), GFP_KERNEL);
>+ if (!metrics)
>+ return;
>+
>+ metrics->global_info.version = 1;
>+ metrics->global_info.num_pipes = MAX_PIPES;
>+ metrics->global_info.num_planes_per_pipe = MAX_PLANES_PER_PIPE;
>+
>+ display->metrics = metrics;
>+}
>+
>+void intel_metrics_fini(struct intel_display *display) {
>+ if (!display->metrics)
>+ return;
>+
>+ kfree(display->metrics);
>+}
>+
>+/**
>+ * intel_metrics_vblank - Vblank information
>+ * @display: Pointer to the intel_display struct that is in use by the gfx device.
>+ * @crtc: The Intel CRTC that received the vblank interrupt.
>+ *
>+ * To be called when a vblank is passed.
>+ */
>+void intel_metrics_vblank(struct intel_display *display,
>+ struct intel_crtc *crtc)
>+{
>+ struct display_event *event;
>+
>+ if (!display->metrics)
>+ return;
>+
>+ event = kmalloc(sizeof(*event), GFP_ATOMIC);
HI Rodrigo, after changing kmalloc -> kzalloc, it works fine for us. It does correctly prints Global Flip count and Async Flip count.
Prior to this change, event->is_vblank in function display_event_work is always true and hence it never increases flip count.
Thanks Chaitanya for pointing this out.
Regards,
Naveen Kumar
>+ if (!event)
>+ return;
>+
>+ INIT_WORK(&event->work, display_event_work);
>+ event->i915 = to_i915(crtc->base.dev);
>+ event->display = display;
>+ event->is_vblank = true;
>+ event->pipe = crtc->pipe;
>+ queue_work(system_highpri_wq, &event->work); }
>+
>+/**
>+ * intel_metrics_flip - Flip information
>+ * @display: Pointer to the intel_display struct that is in use by the gfx device.
>+ * @crtc_state: New CRTC state upon a page flip.
>+ * @plane: Which plane ID got the page flip.
>+ * @async_flip: A boolean to indicate if the page flip was async.
>+ *
>+ * To be called on a page flip.
>+ */
>+void intel_metrics_flip(struct intel_display *display,
>+ const struct intel_crtc_state *crtc_state,
>+ int plane, bool async_flip)
>+{
>+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
>+ struct display_event *event;
>+
>+ if (!display->metrics)
>+ return;
>+
>+ event = kmalloc(sizeof(*event), GFP_ATOMIC);
Same here, had to change kmalloc -> kzalloc
>+ if (!event)
>+ return;
>+
>+ INIT_WORK(&event->work, display_event_work);
>+ event->i915 = to_i915(crtc->base.dev);
>+ event->display = display;
>+ event->pipe = crtc->pipe;
>+ event->plane = plane;
>+ event->async_flip = async_flip;
>+ queue_work(system_highpri_wq, &event->work); }
>+
>+void intel_metrics_show(struct intel_display *display, struct
>+drm_printer *p) {
>+ struct intel_display_metrics *metrics = display->metrics;
>+ int pipe, plane;
>+ u32 val;
>+
>+ if (!metrics)
>+ return;
>+
>+ drm_printf(p, "\nDisplay Metrics - Globals:\n");
>+ drm_printf(p, "\tVersion: %d\n", metrics->global_info.version);
>+ drm_printf(p, "\tNum Pipes: %d\n", metrics->global_info.num_pipes);
>+ drm_printf(p, "\tNum Planes per Pipe: %d\n",
>+ metrics->global_info.num_planes_per_pipe);
>+ drm_printf(p, "\tGlobal Refresh Info Count: %d\n",
>+ metrics->global_info.refresh_count);
>+ drm_printf(p, "\tGlobal Vblank Count: %d\n",
>+ metrics->global_info.vblank_count);
>+ drm_printf(p, "\tGlobal Flip Count: %d\n",
>+ metrics->global_info.flip_count);
>+
>+ for (pipe = 0; pipe < MAX_PIPES; pipe++) {
>+ if (!metrics->refresh_info[pipe].refresh_interval)
>+ continue;
>+
>+ drm_printf(p, "\nDisplay Metrics - Refresh Info - Pipe[%d]:\n",
>+ pipe);
>+ drm_printf(p, "\tRefresh Interval: %d\n",
>+ metrics->refresh_info[pipe].refresh_interval);
>+ drm_printf(p, "\tIS VRR: %d\n",
>+ metrics->refresh_info[pipe].is_variable);
>+
>+ drm_printf(p, "Display Metrics - Vblank Info - Pipe[%d]:\n",
>+ pipe);
>+ val = metrics->vblank_metrics[pipe];
>+ drm_printf(p, "\tVBlank Last Timestamp: %x\n",
>+ REG_FIELD_GET(VBLANK_LAST, val));
>+ drm_printf(p, "\tVBlank Count: %d\n",
>+ REG_FIELD_GET(VBLANK_COUNT, val));
>+
>+ drm_printf(p, "Display Metrics - Flip Info - Pipe[%d]:\n", pipe);
>+ for (plane = 0; plane < MAX_PLANES_PER_PIPE; plane++) {
>+ val = metrics->flip_metrics[pipe][plane].part1;
>+ if (!val)
>+ continue;
>+
>+ drm_printf(p, "\tFlip Info - Plane[%d]:\n", plane);
>+ drm_printf(p, "\t\tFlip Last Timestamp: %x\n",
>+ REG_FIELD_GET(FLIP_P1_LAST, val));
>+ drm_printf(p, "\t\tFlip Total Count: %d\n",
>+ REG_FIELD_GET(FLIP_P1_TOTAL_COUNT,
>val));
>+
>+ val = metrics->flip_metrics[pipe][plane].part2;
>+
>+ drm_printf(p, "\t\tFlip Async Count: %d\n",
>+ REG_FIELD_GET(FLIP_P2_ASYNC_COUNT,
>val));
>+ drm_printf(p, "\t\tFlip Vsync Count: %d\n",
>+ REG_FIELD_GET(FLIP_P2_VSYNC_COUNT,
>val));
>+ }
>+ }
>+}
>diff --git a/drivers/gpu/drm/i915/display/intel_metrics.h
>b/drivers/gpu/drm/i915/display/intel_metrics.h
>new file mode 100644
>index 000000000000..9e41dc9522f3
>--- /dev/null
>+++ b/drivers/gpu/drm/i915/display/intel_metrics.h
>@@ -0,0 +1,27 @@
>+/* SPDX-License-Identifier: MIT */
>+/*
>+ * Copyright © 2024 Intel Corporation
>+ */
>+
>+#ifndef __INTEL_METRICS_H__
>+#define __INTEL_METRICS_H__
>+
>+#include <linux/types.h>
>+
>+struct drm_printer;
>+struct intel_crtc;
>+struct intel_crtc_state;
>+struct intel_display;
>+
>+void intel_metrics_refresh_info(struct intel_display *display,
>+ struct intel_crtc_state *crtc_state); void
>+intel_metrics_vblank(struct intel_display *display,
>+ struct intel_crtc *intel_crtc);
>+void intel_metrics_flip(struct intel_display *display,
>+ const struct intel_crtc_state *crtc_state,
>+ int plane, bool async_flip);
>+void intel_metrics_init(struct intel_display *display); void
>+intel_metrics_fini(struct intel_display *display); void
>+intel_metrics_show(struct intel_display *display, struct drm_printer
>+*p);
>+
>+#endif
>diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c
>b/drivers/gpu/drm/i915/display/skl_universal_plane.c
>index 860574d04f88..fdd21a41d79d 100644
>--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
>+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
>@@ -17,6 +17,7 @@
> #include "intel_fb.h"
> #include "intel_fbc.h"
> #include "intel_frontbuffer.h"
>+#include "intel_metrics.h"
> #include "intel_psr.h"
> #include "intel_psr_regs.h"
> #include "skl_scaler.h"
>@@ -1392,6 +1393,7 @@ skl_plane_async_flip(struct intel_plane *plane,
> bool async_flip)
> {
> struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
>+ struct intel_display *display = &dev_priv->display;
> enum plane_id plane_id = plane->id;
> enum pipe pipe = plane->pipe;
> u32 plane_ctl = plane_state->ctl;
>@@ -1404,6 +1406,7 @@ skl_plane_async_flip(struct intel_plane *plane,
> intel_de_write_fw(dev_priv, PLANE_CTL(pipe, plane_id), plane_ctl);
> intel_de_write_fw(dev_priv, PLANE_SURF(pipe, plane_id),
> skl_plane_surf(plane_state, 0));
>+ intel_metrics_flip(display, crtc_state, plane_id, async_flip);
> }
>
> static bool intel_format_is_p01x(u32 format) diff --git
>a/drivers/gpu/drm/xe/Makefile b/drivers/gpu/drm/xe/Makefile index
>e5b1715f721e..5133dba2c7de 100644
>--- a/drivers/gpu/drm/xe/Makefile
>+++ b/drivers/gpu/drm/xe/Makefile
>@@ -263,6 +263,7 @@ xe-$(CONFIG_DRM_XE_DISPLAY) += \
> i915-display/intel_hti.o \
> i915-display/intel_link_bw.o \
> i915-display/intel_lspcon.o \
>+ i915-display/intel_metrics.o \
> i915-display/intel_modeset_lock.o \
> i915-display/intel_modeset_setup.o \
> i915-display/intel_modeset_verify.o \
>--
>2.44.0
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