Re: [Intel-gfx] [PATCH] drm/i915/debugfs: move IPS debugfs to hsw_ips.c
On Thu, 02 Mar 2023, Ville Syrjälä wrote: > On Thu, Mar 02, 2023 at 06:16:17PM +0200, Jani Nikula wrote: >> Follow the style of placing debugfs next to the implementation. >> >> Signed-off-by: Jani Nikula > > Reviewed-by: Ville Syrjälä Thanks! > Some ideas for future enhancements: > - only register when IPS is actually supported > - make it per-crtc since IPS only exists on pipe A > - report the software state of IPS enable vs. disable > - there's a false color bit just like with fbc, could > hook that up to help verify that it actually works Yeah, I considered that, but since #define HAS_IPS(dev_priv) (IS_HSW_ULT(dev_priv) || IS_BROADWELL(dev_priv)) it's not really high up on the list of things to do... indeed I wanted to stow this away in hsw_ips.[ch] because of that. BR, Jani. > >> --- >> drivers/gpu/drm/i915/display/hsw_ips.c| 37 +++ >> drivers/gpu/drm/i915/display/hsw_ips.h| 2 + >> .../drm/i915/display/intel_display_debugfs.c | 30 +-- >> 3 files changed, 41 insertions(+), 28 deletions(-) >> >> diff --git a/drivers/gpu/drm/i915/display/hsw_ips.c >> b/drivers/gpu/drm/i915/display/hsw_ips.c >> index 83aa3800245f..2910f5d0f3e2 100644 >> --- a/drivers/gpu/drm/i915/display/hsw_ips.c >> +++ b/drivers/gpu/drm/i915/display/hsw_ips.c >> @@ -267,3 +267,40 @@ void hsw_ips_get_config(struct intel_crtc_state >> *crtc_state) >> crtc_state->ips_enabled = true; >> } >> } >> + >> +static int hsw_ips_debugfs_status_show(struct seq_file *m, void *unused) >> +{ >> +struct drm_i915_private *i915 = m->private; >> +intel_wakeref_t wakeref; >> + >> +if (!HAS_IPS(i915)) >> +return -ENODEV; >> + >> +wakeref = intel_runtime_pm_get(&i915->runtime_pm); >> + >> +seq_printf(m, "Enabled by kernel parameter: %s\n", >> + str_yes_no(i915->params.enable_ips)); >> + >> +if (DISPLAY_VER(i915) >= 8) { >> +seq_puts(m, "Currently: unknown\n"); >> +} else { >> +if (intel_de_read(i915, IPS_CTL) & IPS_ENABLE) >> +seq_puts(m, "Currently: enabled\n"); >> +else >> +seq_puts(m, "Currently: disabled\n"); >> +} >> + >> +intel_runtime_pm_put(&i915->runtime_pm, wakeref); >> + >> +return 0; >> +} >> + >> +DEFINE_SHOW_ATTRIBUTE(hsw_ips_debugfs_status); >> + >> +void hsw_ips_debugfs_register(struct drm_i915_private *i915) >> +{ >> +struct drm_minor *minor = i915->drm.primary; >> + >> +debugfs_create_file("i915_ips_status", 0444, minor->debugfs_root, >> +i915, &hsw_ips_debugfs_status_fops); >> +} >> diff --git a/drivers/gpu/drm/i915/display/hsw_ips.h >> b/drivers/gpu/drm/i915/display/hsw_ips.h >> index 4564dee497d7..7ed6061874f7 100644 >> --- a/drivers/gpu/drm/i915/display/hsw_ips.h >> +++ b/drivers/gpu/drm/i915/display/hsw_ips.h >> @@ -8,6 +8,7 @@ >> >> #include >> >> +struct drm_i915_private; >> struct intel_atomic_state; >> struct intel_crtc; >> struct intel_crtc_state; >> @@ -22,5 +23,6 @@ bool hsw_crtc_state_ips_capable(const struct >> intel_crtc_state *crtc_state); >> int hsw_ips_compute_config(struct intel_atomic_state *state, >> struct intel_crtc *crtc); >> void hsw_ips_get_config(struct intel_crtc_state *crtc_state); >> +void hsw_ips_debugfs_register(struct drm_i915_private *i915); >> >> #endif /* __HSW_IPS_H__ */ >> diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c >> b/drivers/gpu/drm/i915/display/intel_display_debugfs.c >> index 25013f303c82..8be606bfd2b4 100644 >> --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c >> +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c >> @@ -8,6 +8,7 @@ >> #include >> #include >> >> +#include "hsw_ips.h" >> #include "i915_debugfs.h" >> #include "i915_irq.h" >> #include "i915_reg.h" >> @@ -49,33 +50,6 @@ static int i915_frontbuffer_tracking(struct seq_file *m, >> void *unused) >> return 0; >> } >> >> -static int i915_ips_status(struct seq_file *m, void *unused) >> -{ >> -struct drm_i915_private *dev_priv = node_to_i915(m->private); >> -intel_wakeref_t wakeref; >> - >> -if (!HAS_IPS(dev_priv)) >> -return -ENODEV; >> - >> -wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm); >> - >> -seq_printf(m, "Enabled by kernel parameter: %s\n", >> - str_yes_no(dev_priv->params.enable_ips)); >> - >> -if (DISPLAY_VER(dev_priv) >= 8) { >> -seq_puts(m, "Currently: unknown\n"); >> -} else { >> -if (intel_de_read(dev_priv, IPS_CTL) & IPS_ENABLE) >> -seq_puts(m, "Currently: enabled\n"); >> -else >> -seq_puts(m, "Currently: disabled\n"); >> -} >> - >> -intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref); >> - >> -return 0; >> -} >> - >> static int i915_sr_status(struct seq_file *m, void *unused) >> { >> struct drm_i915_private *dev_pr
Re: [Intel-gfx] [PATCH] drm/i915/debugfs: move IPS debugfs to hsw_ips.c
On Thu, Mar 02, 2023 at 06:16:17PM +0200, Jani Nikula wrote: > Follow the style of placing debugfs next to the implementation. > > Signed-off-by: Jani Nikula Reviewed-by: Ville Syrjälä Some ideas for future enhancements: - only register when IPS is actually supported - make it per-crtc since IPS only exists on pipe A - report the software state of IPS enable vs. disable - there's a false color bit just like with fbc, could hook that up to help verify that it actually works > --- > drivers/gpu/drm/i915/display/hsw_ips.c| 37 +++ > drivers/gpu/drm/i915/display/hsw_ips.h| 2 + > .../drm/i915/display/intel_display_debugfs.c | 30 +-- > 3 files changed, 41 insertions(+), 28 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/hsw_ips.c > b/drivers/gpu/drm/i915/display/hsw_ips.c > index 83aa3800245f..2910f5d0f3e2 100644 > --- a/drivers/gpu/drm/i915/display/hsw_ips.c > +++ b/drivers/gpu/drm/i915/display/hsw_ips.c > @@ -267,3 +267,40 @@ void hsw_ips_get_config(struct intel_crtc_state > *crtc_state) > crtc_state->ips_enabled = true; > } > } > + > +static int hsw_ips_debugfs_status_show(struct seq_file *m, void *unused) > +{ > + struct drm_i915_private *i915 = m->private; > + intel_wakeref_t wakeref; > + > + if (!HAS_IPS(i915)) > + return -ENODEV; > + > + wakeref = intel_runtime_pm_get(&i915->runtime_pm); > + > + seq_printf(m, "Enabled by kernel parameter: %s\n", > +str_yes_no(i915->params.enable_ips)); > + > + if (DISPLAY_VER(i915) >= 8) { > + seq_puts(m, "Currently: unknown\n"); > + } else { > + if (intel_de_read(i915, IPS_CTL) & IPS_ENABLE) > + seq_puts(m, "Currently: enabled\n"); > + else > + seq_puts(m, "Currently: disabled\n"); > + } > + > + intel_runtime_pm_put(&i915->runtime_pm, wakeref); > + > + return 0; > +} > + > +DEFINE_SHOW_ATTRIBUTE(hsw_ips_debugfs_status); > + > +void hsw_ips_debugfs_register(struct drm_i915_private *i915) > +{ > + struct drm_minor *minor = i915->drm.primary; > + > + debugfs_create_file("i915_ips_status", 0444, minor->debugfs_root, > + i915, &hsw_ips_debugfs_status_fops); > +} > diff --git a/drivers/gpu/drm/i915/display/hsw_ips.h > b/drivers/gpu/drm/i915/display/hsw_ips.h > index 4564dee497d7..7ed6061874f7 100644 > --- a/drivers/gpu/drm/i915/display/hsw_ips.h > +++ b/drivers/gpu/drm/i915/display/hsw_ips.h > @@ -8,6 +8,7 @@ > > #include > > +struct drm_i915_private; > struct intel_atomic_state; > struct intel_crtc; > struct intel_crtc_state; > @@ -22,5 +23,6 @@ bool hsw_crtc_state_ips_capable(const struct > intel_crtc_state *crtc_state); > int hsw_ips_compute_config(struct intel_atomic_state *state, > struct intel_crtc *crtc); > void hsw_ips_get_config(struct intel_crtc_state *crtc_state); > +void hsw_ips_debugfs_register(struct drm_i915_private *i915); > > #endif /* __HSW_IPS_H__ */ > diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c > b/drivers/gpu/drm/i915/display/intel_display_debugfs.c > index 25013f303c82..8be606bfd2b4 100644 > --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c > +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c > @@ -8,6 +8,7 @@ > #include > #include > > +#include "hsw_ips.h" > #include "i915_debugfs.h" > #include "i915_irq.h" > #include "i915_reg.h" > @@ -49,33 +50,6 @@ static int i915_frontbuffer_tracking(struct seq_file *m, > void *unused) > return 0; > } > > -static int i915_ips_status(struct seq_file *m, void *unused) > -{ > - struct drm_i915_private *dev_priv = node_to_i915(m->private); > - intel_wakeref_t wakeref; > - > - if (!HAS_IPS(dev_priv)) > - return -ENODEV; > - > - wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm); > - > - seq_printf(m, "Enabled by kernel parameter: %s\n", > -str_yes_no(dev_priv->params.enable_ips)); > - > - if (DISPLAY_VER(dev_priv) >= 8) { > - seq_puts(m, "Currently: unknown\n"); > - } else { > - if (intel_de_read(dev_priv, IPS_CTL) & IPS_ENABLE) > - seq_puts(m, "Currently: enabled\n"); > - else > - seq_puts(m, "Currently: disabled\n"); > - } > - > - intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref); > - > - return 0; > -} > - > static int i915_sr_status(struct seq_file *m, void *unused) > { > struct drm_i915_private *dev_priv = node_to_i915(m->private); > @@ -1343,7 +1317,6 @@ static const struct file_operations > i915_fifo_underrun_reset_ops = { > > static const struct drm_info_list intel_display_debugfs_list[] = { > {"i915_frontbuffer_tracking", i915_frontbuffer_tracking, 0}, > - {"i915_ips_status", i915_ips_status, 0}, > {"i915_sr_status", i915_sr_status, 0}, > {"i915_opregion", i915_opregion,