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drm/i915/display: split out modeset verification code

Browse source 
Add new file intel_modeset_verify.c for high level modeset verification
code to declutter intel_display.h. The new file is supposed to be about
crtc/encoder/connector verification; the state verification for very
specific functionality such as plls or wm should be placed next to the
code it verifies.

Fix some minor checkpatch issues while at it.

v2: Rebase

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/b9b47c14316a9edb772a8b8f934eabe7e928dd76.1655372759.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2022-06-16 12:48:15 +03:00
parent 781c336a6c
commit df17ff62b6
5 changed files with 284 additions and 235 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/gpu/drm/i915/Makefile
View file

@ -232,6 +232,7 @@ i915-y += \
display/intel_hdcp.o \
display/intel_hotplug.o \
display/intel_lpe_audio.o \
display/intel_modeset_verify.o \
display/intel_overlay.o \
display/intel_pch_display.o \
display/intel_pch_refclk.o \

243
drivers/gpu/drm/i915/display/intel_display.c
View file

@ -99,6 +99,7 @@
#include "intel_frontbuffer.h"
#include "intel_hdcp.h"
#include "intel_hotplug.h"
#include "intel_modeset_verify.h"
#include "intel_overlay.h"
#include "intel_panel.h"
#include "intel_pch_display.h"
@ -2529,45 +2530,6 @@ void intel_encoder_destroy(struct drm_encoder *encoder)
kfree(intel_encoder);
}
/* Cross check the actual hw state with our own modeset state tracking (and it's
* internal consistency). */
static void intel_connector_verify_state(struct intel_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
struct intel_connector *connector = to_intel_connector(conn_state->connector);
struct drm_i915_private *i915 = to_i915(connector->base.dev);
drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s]\n",
connector->base.base.id, connector->base.name);
if (connector->get_hw_state(connector)) {
struct intel_encoder *encoder = intel_attached_encoder(connector);
I915_STATE_WARN(!crtc_state,
"connector enabled without attached crtc\n");
if (!crtc_state)
return;
I915_STATE_WARN(!crtc_state->hw.active,
"connector is active, but attached crtc isn't\n");
if (!encoder || encoder->type == INTEL_OUTPUT_DP_MST)
return;
I915_STATE_WARN(conn_state->best_encoder != &encoder->base,
"atomic encoder doesn't match attached encoder\n");
I915_STATE_WARN(conn_state->crtc != encoder->base.crtc,
"attached encoder crtc differs from connector crtc\n");
} else {
I915_STATE_WARN(crtc_state && crtc_state->hw.active,
"attached crtc is active, but connector isn't\n");
I915_STATE_WARN(!crtc_state && conn_state->best_encoder,
"best encoder set without crtc!\n");
}
}
static bool intel_crtc_supports_double_wide(const struct intel_crtc *crtc)
{
const struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
@ -2709,8 +2671,8 @@ static void intel_crtc_readout_derived_state(struct intel_crtc_state *crtc_state
intel_crtc_compute_pixel_rate(crtc_state);
}
static void intel_encoder_get_config(struct intel_encoder *encoder,
struct intel_crtc_state *crtc_state)
void intel_encoder_get_config(struct intel_encoder *encoder,
struct intel_crtc_state *crtc_state)
{
encoder->get_config(encoder, crtc_state);
@ -4251,7 +4213,7 @@ static bool hsw_get_pipe_config(struct intel_crtc *crtc,
return active;
}
static bool intel_crtc_get_pipe_config(struct intel_crtc_state *crtc_state)
bool intel_crtc_get_pipe_config(struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
struct drm_i915_private *i915 = to_i915(crtc->base.dev);
@ -5230,9 +5192,9 @@ static void intel_dump_plane_state(const struct intel_plane_state *plane_state)
DRM_RECT_ARG(&plane_state->uapi.dst));
}
static void intel_dump_pipe_config(const struct intel_crtc_state *pipe_config,
struct intel_atomic_state *state,
const char *context)
void intel_dump_pipe_config(const struct intel_crtc_state *pipe_config,
struct intel_atomic_state *state,
const char *context)
{
struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
@ -5982,7 +5944,7 @@ static bool fastboot_enabled(struct drm_i915_private *dev_priv)
return false;
}
static bool
bool
intel_pipe_config_compare(const struct intel_crtc_state *current_config,
const struct intel_crtc_state *pipe_config,
bool fastset)
@ -6405,170 +6367,6 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
return ret;
}
static void intel_pipe_config_sanity_check(struct drm_i915_private *dev_priv,
const struct intel_crtc_state *pipe_config)
{
if (pipe_config->has_pch_encoder) {
int fdi_dotclock = intel_dotclock_calculate(intel_fdi_link_freq(dev_priv, pipe_config),
&pipe_config->fdi_m_n);
int dotclock = pipe_config->hw.adjusted_mode.crtc_clock;
/*
* FDI already provided one idea for the dotclock.
* Yell if the encoder disagrees.
*/
drm_WARN(&dev_priv->drm,
!intel_fuzzy_clock_check(fdi_dotclock, dotclock),
"FDI dotclock and encoder dotclock mismatch, fdi: %i, encoder: %i\n",
fdi_dotclock, dotclock);
}
}
static void
verify_connector_state(struct intel_atomic_state *state,
struct intel_crtc *crtc)
{
struct drm_connector *connector;
struct drm_connector_state *new_conn_state;
int i;
for_each_new_connector_in_state(&state->base, connector, new_conn_state, i) {
struct drm_encoder *encoder = connector->encoder;
struct intel_crtc_state *crtc_state = NULL;
if (new_conn_state->crtc != &crtc->base)
continue;
if (crtc)
crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
intel_connector_verify_state(crtc_state, new_conn_state);
I915_STATE_WARN(new_conn_state->best_encoder != encoder,
"connector's atomic encoder doesn't match legacy encoder\n");
}
}
static void
verify_encoder_state(struct drm_i915_private *dev_priv, struct intel_atomic_state *state)
{
struct intel_encoder *encoder;
struct drm_connector *connector;
struct drm_connector_state *old_conn_state, *new_conn_state;
int i;
for_each_intel_encoder(&dev_priv->drm, encoder) {
bool enabled = false, found = false;
enum pipe pipe;
drm_dbg_kms(&dev_priv->drm, "[ENCODER:%d:%s]\n",
encoder->base.base.id,
encoder->base.name);
for_each_oldnew_connector_in_state(&state->base, connector, old_conn_state,
new_conn_state, i) {
if (old_conn_state->best_encoder == &encoder->base)
found = true;
if (new_conn_state->best_encoder != &encoder->base)
continue;
found = enabled = true;
I915_STATE_WARN(new_conn_state->crtc !=
encoder->base.crtc,
"connector's crtc doesn't match encoder crtc\n");
}
if (!found)
continue;
I915_STATE_WARN(!!encoder->base.crtc != enabled,
"encoder's enabled state mismatch "
"(expected %i, found %i)\n",
!!encoder->base.crtc, enabled);
if (!encoder->base.crtc) {
bool active;
active = encoder->get_hw_state(encoder, &pipe);
I915_STATE_WARN(active,
"encoder detached but still enabled on pipe %c.\n",
pipe_name(pipe));
}
}
}
static void
verify_crtc_state(struct intel_crtc *crtc,
struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_encoder *encoder;
struct intel_crtc_state *pipe_config = old_crtc_state;
struct drm_atomic_state *state = old_crtc_state->uapi.state;
struct intel_crtc *master_crtc;
__drm_atomic_helper_crtc_destroy_state(&old_crtc_state->uapi);
intel_crtc_free_hw_state(old_crtc_state);
intel_crtc_state_reset(old_crtc_state, crtc);
old_crtc_state->uapi.state = state;
drm_dbg_kms(&dev_priv->drm, "[CRTC:%d:%s]\n", crtc->base.base.id,
crtc->base.name);
pipe_config->hw.enable = new_crtc_state->hw.enable;
intel_crtc_get_pipe_config(pipe_config);
/* we keep both pipes enabled on 830 */
if (IS_I830(dev_priv) && pipe_config->hw.active)
pipe_config->hw.active = new_crtc_state->hw.active;
I915_STATE_WARN(new_crtc_state->hw.active != pipe_config->hw.active,
"crtc active state doesn't match with hw state "
"(expected %i, found %i)\n",
new_crtc_state->hw.active, pipe_config->hw.active);
I915_STATE_WARN(crtc->active != new_crtc_state->hw.active,
"transitional active state does not match atomic hw state "
"(expected %i, found %i)\n",
new_crtc_state->hw.active, crtc->active);
master_crtc = intel_master_crtc(new_crtc_state);
for_each_encoder_on_crtc(dev, &master_crtc->base, encoder) {
enum pipe pipe;
bool active;
active = encoder->get_hw_state(encoder, &pipe);
I915_STATE_WARN(active != new_crtc_state->hw.active,
"[ENCODER:%i] active %i with crtc active %i\n",
encoder->base.base.id, active,
new_crtc_state->hw.active);
I915_STATE_WARN(active && master_crtc->pipe != pipe,
"Encoder connected to wrong pipe %c\n",
pipe_name(pipe));
if (active)
intel_encoder_get_config(encoder, pipe_config);
}
if (!new_crtc_state->hw.active)
return;
intel_pipe_config_sanity_check(dev_priv, pipe_config);
if (!intel_pipe_config_compare(new_crtc_state,
pipe_config, false)) {
I915_STATE_WARN(1, "pipe state doesn't match!\n");
intel_dump_pipe_config(pipe_config, NULL, "[hw state]");
intel_dump_pipe_config(new_crtc_state, NULL, "[sw state]");
}
}
static void
intel_verify_planes(struct intel_atomic_state *state)
{
@ -6582,31 +6380,6 @@ intel_verify_planes(struct intel_atomic_state *state)
plane_state->uapi.visible);
}
static void
intel_modeset_verify_crtc(struct intel_crtc *crtc,
struct intel_atomic_state *state,
struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state)
{
if (!intel_crtc_needs_modeset(new_crtc_state) && !new_crtc_state->update_pipe)
return;
intel_wm_state_verify(crtc, new_crtc_state);
verify_connector_state(state, crtc);
verify_crtc_state(crtc, old_crtc_state, new_crtc_state);
intel_shared_dpll_state_verify(crtc, old_crtc_state, new_crtc_state);
intel_mpllb_state_verify(state, new_crtc_state);
}
static void
intel_modeset_verify_disabled(struct drm_i915_private *dev_priv,
struct intel_atomic_state *state)
{
verify_encoder_state(dev_priv, state);
verify_connector_state(state, NULL);
intel_shared_dpll_verify_disabled(dev_priv);
}
int intel_modeset_all_pipes(struct intel_atomic_state *state)
{
struct drm_i915_private *dev_priv = to_i915(state->base.dev);

9
drivers/gpu/drm/i915/display/intel_display.h
View file

@ -559,6 +559,13 @@ bool intel_crtc_is_bigjoiner_slave(const struct intel_crtc_state *crtc_state);
bool intel_crtc_is_bigjoiner_master(const struct intel_crtc_state *crtc_state);
u8 intel_crtc_bigjoiner_slave_pipes(const struct intel_crtc_state *crtc_state);
struct intel_crtc *intel_master_crtc(const struct intel_crtc_state *crtc_state);
bool intel_crtc_get_pipe_config(struct intel_crtc_state *crtc_state);
bool intel_pipe_config_compare(const struct intel_crtc_state *current_config,
const struct intel_crtc_state *pipe_config,
bool fastset);
void intel_dump_pipe_config(const struct intel_crtc_state *pipe_config,
struct intel_atomic_state *state,
const char *context);
void intel_plane_destroy(struct drm_plane *plane);
void intel_enable_transcoder(const struct intel_crtc_state *new_crtc_state);
@ -583,6 +590,8 @@ int intel_display_suspend(struct drm_device *dev);
void intel_encoder_destroy(struct drm_encoder *encoder);
struct drm_display_mode *
intel_encoder_current_mode(struct intel_encoder *encoder);
void intel_encoder_get_config(struct intel_encoder *encoder,
struct intel_crtc_state *crtc_state);
bool intel_phy_is_combo(struct drm_i915_private *dev_priv, enum phy phy);
bool intel_phy_is_tc(struct drm_i915_private *dev_priv, enum phy phy);
bool intel_phy_is_snps(struct drm_i915_private *dev_priv, enum phy phy);

245
drivers/gpu/drm/i915/display/intel_modeset_verify.c Normal file
View file

@ -0,0 +1,245 @@
// SPDX-License-Identifier: MIT
/*
* Copyright © 2022 Intel Corporation
*
* High level crtc/connector/encoder modeset state verification.
*/
#include <drm/drm_atomic_state_helper.h>
#include "i915_drv.h"
#include "intel_atomic.h"
#include "intel_crtc.h"
#include "intel_display.h"
#include "intel_display_types.h"
#include "intel_fdi.h"
#include "intel_modeset_verify.h"
#include "intel_pm.h"
#include "intel_snps_phy.h"
/*
* Cross check the actual hw state with our own modeset state tracking (and its
* internal consistency).
*/
static void intel_connector_verify_state(struct intel_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
struct intel_connector *connector = to_intel_connector(conn_state->connector);
struct drm_i915_private *i915 = to_i915(connector->base.dev);
drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s]\n",
connector->base.base.id, connector->base.name);
if (connector->get_hw_state(connector)) {
struct intel_encoder *encoder = intel_attached_encoder(connector);
I915_STATE_WARN(!crtc_state,
"connector enabled without attached crtc\n");
if (!crtc_state)
return;
I915_STATE_WARN(!crtc_state->hw.active,
"connector is active, but attached crtc isn't\n");
if (!encoder || encoder->type == INTEL_OUTPUT_DP_MST)
return;
I915_STATE_WARN(conn_state->best_encoder != &encoder->base,
"atomic encoder doesn't match attached encoder\n");
I915_STATE_WARN(conn_state->crtc != encoder->base.crtc,
"attached encoder crtc differs from connector crtc\n");
} else {
I915_STATE_WARN(crtc_state && crtc_state->hw.active,
"attached crtc is active, but connector isn't\n");
I915_STATE_WARN(!crtc_state && conn_state->best_encoder,
"best encoder set without crtc!\n");
}
}
static void
verify_connector_state(struct intel_atomic_state *state,
struct intel_crtc *crtc)
{
struct drm_connector *connector;
struct drm_connector_state *new_conn_state;
int i;
for_each_new_connector_in_state(&state->base, connector, new_conn_state, i) {
struct drm_encoder *encoder = connector->encoder;
struct intel_crtc_state *crtc_state = NULL;
if (new_conn_state->crtc != &crtc->base)
continue;
if (crtc)
crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
intel_connector_verify_state(crtc_state, new_conn_state);
I915_STATE_WARN(new_conn_state->best_encoder != encoder,
"connector's atomic encoder doesn't match legacy encoder\n");
}
}
static void intel_pipe_config_sanity_check(struct drm_i915_private *dev_priv,
const struct intel_crtc_state *pipe_config)
{
if (pipe_config->has_pch_encoder) {
int fdi_dotclock = intel_dotclock_calculate(intel_fdi_link_freq(dev_priv, pipe_config),
&pipe_config->fdi_m_n);
int dotclock = pipe_config->hw.adjusted_mode.crtc_clock;
/*
* FDI already provided one idea for the dotclock.
* Yell if the encoder disagrees.
*/
drm_WARN(&dev_priv->drm,
!intel_fuzzy_clock_check(fdi_dotclock, dotclock),
"FDI dotclock and encoder dotclock mismatch, fdi: %i, encoder: %i\n",
fdi_dotclock, dotclock);
}
}
static void
verify_encoder_state(struct drm_i915_private *dev_priv, struct intel_atomic_state *state)
{
struct intel_encoder *encoder;
struct drm_connector *connector;
struct drm_connector_state *old_conn_state, *new_conn_state;
int i;
for_each_intel_encoder(&dev_priv->drm, encoder) {
bool enabled = false, found = false;
enum pipe pipe;
drm_dbg_kms(&dev_priv->drm, "[ENCODER:%d:%s]\n",
encoder->base.base.id,
encoder->base.name);
for_each_oldnew_connector_in_state(&state->base, connector, old_conn_state,
new_conn_state, i) {
if (old_conn_state->best_encoder == &encoder->base)
found = true;
if (new_conn_state->best_encoder != &encoder->base)
continue;
found = true;
enabled = true;
I915_STATE_WARN(new_conn_state->crtc !=
encoder->base.crtc,
"connector's crtc doesn't match encoder crtc\n");
}
if (!found)
continue;
I915_STATE_WARN(!!encoder->base.crtc != enabled,
"encoder's enabled state mismatch (expected %i, found %i)\n",
!!encoder->base.crtc, enabled);
if (!encoder->base.crtc) {
bool active;
active = encoder->get_hw_state(encoder, &pipe);
I915_STATE_WARN(active,
"encoder detached but still enabled on pipe %c.\n",
pipe_name(pipe));
}
}
}
static void
verify_crtc_state(struct intel_crtc *crtc,
struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_encoder *encoder;
struct intel_crtc_state *pipe_config = old_crtc_state;
struct drm_atomic_state *state = old_crtc_state->uapi.state;
struct intel_crtc *master_crtc;
__drm_atomic_helper_crtc_destroy_state(&old_crtc_state->uapi);
intel_crtc_free_hw_state(old_crtc_state);
intel_crtc_state_reset(old_crtc_state, crtc);
old_crtc_state->uapi.state = state;
drm_dbg_kms(&dev_priv->drm, "[CRTC:%d:%s]\n", crtc->base.base.id,
crtc->base.name);
pipe_config->hw.enable = new_crtc_state->hw.enable;
intel_crtc_get_pipe_config(pipe_config);
/* we keep both pipes enabled on 830 */
if (IS_I830(dev_priv) && pipe_config->hw.active)
pipe_config->hw.active = new_crtc_state->hw.active;
I915_STATE_WARN(new_crtc_state->hw.active != pipe_config->hw.active,
"crtc active state doesn't match with hw state (expected %i, found %i)\n",
new_crtc_state->hw.active, pipe_config->hw.active);
I915_STATE_WARN(crtc->active != new_crtc_state->hw.active,
"transitional active state does not match atomic hw state (expected %i, found %i)\n",
new_crtc_state->hw.active, crtc->active);
master_crtc = intel_master_crtc(new_crtc_state);
for_each_encoder_on_crtc(dev, &master_crtc->base, encoder) {
enum pipe pipe;
bool active;
active = encoder->get_hw_state(encoder, &pipe);
I915_STATE_WARN(active != new_crtc_state->hw.active,
"[ENCODER:%i] active %i with crtc active %i\n",
encoder->base.base.id, active,
new_crtc_state->hw.active);
I915_STATE_WARN(active && master_crtc->pipe != pipe,
"Encoder connected to wrong pipe %c\n",
pipe_name(pipe));
if (active)
intel_encoder_get_config(encoder, pipe_config);
}
if (!new_crtc_state->hw.active)
return;
intel_pipe_config_sanity_check(dev_priv, pipe_config);
if (!intel_pipe_config_compare(new_crtc_state,
pipe_config, false)) {
I915_STATE_WARN(1, "pipe state doesn't match!\n");
intel_dump_pipe_config(pipe_config, NULL, "[hw state]");
intel_dump_pipe_config(new_crtc_state, NULL, "[sw state]");
}
}
void intel_modeset_verify_crtc(struct intel_crtc *crtc,
struct intel_atomic_state *state,
struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state)
{
if (!intel_crtc_needs_modeset(new_crtc_state) && !new_crtc_state->update_pipe)
return;
intel_wm_state_verify(crtc, new_crtc_state);
verify_connector_state(state, crtc);
verify_crtc_state(crtc, old_crtc_state, new_crtc_state);
intel_shared_dpll_state_verify(crtc, old_crtc_state, new_crtc_state);
intel_mpllb_state_verify(state, new_crtc_state);
}
void intel_modeset_verify_disabled(struct drm_i915_private *dev_priv,
struct intel_atomic_state *state)
{
verify_encoder_state(dev_priv, state);
verify_connector_state(state, NULL);
intel_shared_dpll_verify_disabled(dev_priv);
}

21
drivers/gpu/drm/i915/display/intel_modeset_verify.h Normal file
View file

@ -0,0 +1,21 @@
/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2022 Intel Corporation
*/
#ifndef __INTEL_MODESET_VERIFY_H__
#define __INTEL_MODESET_VERIFY_H__
struct drm_i915_private;
struct intel_atomic_state;
struct intel_crtc;
struct intel_crtc_state;
void intel_modeset_verify_crtc(struct intel_crtc *crtc,
struct intel_atomic_state *state,
struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state);
void intel_modeset_verify_disabled(struct drm_i915_private *dev_priv,
struct intel_atomic_state *state);
#endif /* __INTEL_MODESET_VERIFY_H__ */