[PATCH 08/14] drm/i915: Implement hw state readout and checks for ultrajoiner
Ville Syrjälä
ville.syrjala at linux.intel.com
Fri Sep 6 15:58:42 UTC 2024
On Fri, Sep 06, 2024 at 06:28:01PM +0530, Ankit Nautiyal wrote:
> From: Stanislav Lisovskiy <stanislav.lisovskiy at intel.com>
>
> Ultrajoiner mode has some new bits and states to be
> read out from the hw. Lets make changes accordingly.
>
> v2: Fix checkpatch warnings. (Ankit)
> v3: Add separate functions for computing expected secondary_big/ultrajoiner
> pipes. (Ankit)
>
> Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy at intel.com>
> Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_display.c | 133 ++++++++++++++----
> .../gpu/drm/i915/display/intel_vdsc_regs.h | 3 +
> 2 files changed, 108 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index 6f098383479f..1243e4b24acc 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -3638,17 +3638,63 @@ static void enabled_bigjoiner_pipes(struct drm_i915_private *dev_priv,
> }
> }
>
> -static u8 expected_secondary_pipes(u8 primary_pipes)
> +static void enabled_ultrajoiner_pipes(struct drm_i915_private *i915,
> + u8 *primary_pipes, u8 *secondary_pipes)
> {
> + struct intel_crtc *crtc;
> +
> + *primary_pipes = 0;
> + *secondary_pipes = 0;
> +
> + if (DISPLAY_VER(i915) < 14)
> + return;
> +
> + for_each_intel_crtc_in_pipe_mask(&i915->drm, crtc,
> + joiner_pipes(i915)) {
> + enum intel_display_power_domain power_domain;
> + enum pipe pipe = crtc->pipe;
> + intel_wakeref_t wakeref;
> +
> + power_domain = intel_dsc_power_domain(crtc, (enum transcoder)pipe);
> + with_intel_display_power_if_enabled(i915, power_domain, wakeref) {
> + u32 tmp = intel_de_read(i915, ICL_PIPE_DSS_CTL1(pipe));
> +
> + if (!(tmp & ULTRA_JOINER_ENABLE))
> + continue;
> +
> + if (tmp & PRIMARY_ULTRA_JOINER_ENABLE)
> + *primary_pipes |= BIT(pipe);
> + else
> + *secondary_pipes |= BIT(pipe);
> + }
> + }
> +}
> +
> +static u8 expected_secondary_bigjoiner_pipes(u8 primary_pipes)
> +{
> + if (!primary_pipes)
> + return 0;
> +
> return primary_pipes << 1;
What is "0 << 1"?
> }
>
> +static u8 expected_secondary_ultrajoiner_pipes(u8 primary_pipes)
> +{
> + if (!primary_pipes)
> + return 0;
> +
> + return GENMASK(2, primary_pipes);
That looks like nonsense.
Looks like I had some ideas how to do these in a generic fashion:
https://lore.kernel.org/intel-gfx/ZoMA2T5qTKB7wdwl@intel.com/
> +}
> +
> static void enabled_joiner_pipes(struct drm_i915_private *dev_priv,
> - u8 *primary_pipes, u8 *secondary_pipes)
> + u8 *primary_pipes, u8 *secondary_pipes,
> + bool *ultrajoiner_used)
> {
> u8 primary_uncompressed_joiner_pipes, primary_bigjoiner_pipes;
> + u8 primary_ultrajoiner_pipes;
> u8 secondary_uncompressed_joiner_pipes, secondary_bigjoiner_pipes;
> - u8 uncompressed_joiner_pipes, bigjoiner_pipes;
> + u8 secondary_ultrajoiner_pipes;
> + u8 uncompressed_joiner_pipes, bigjoiner_pipes, ultrajoiner_pipes;
>
> enabled_uncompressed_joiner_pipes(dev_priv, &primary_uncompressed_joiner_pipes,
> &secondary_uncompressed_joiner_pipes);
> @@ -3656,33 +3702,50 @@ static void enabled_joiner_pipes(struct drm_i915_private *dev_priv,
> enabled_bigjoiner_pipes(dev_priv, &primary_bigjoiner_pipes,
> &secondary_bigjoiner_pipes);
>
> + enabled_ultrajoiner_pipes(dev_priv, &primary_ultrajoiner_pipes,
> + &secondary_ultrajoiner_pipes);
> +
> uncompressed_joiner_pipes = primary_uncompressed_joiner_pipes |
> secondary_uncompressed_joiner_pipes;
> bigjoiner_pipes = primary_bigjoiner_pipes | secondary_bigjoiner_pipes;
> + ultrajoiner_pipes = primary_ultrajoiner_pipes | secondary_ultrajoiner_pipes;
> + *ultrajoiner_used = ultrajoiner_pipes != 0;
>
> drm_WARN(&dev_priv->drm, (uncompressed_joiner_pipes & bigjoiner_pipes) != 0,
> "Uncomressed joiner pipes(%x) and bigjoiner pipes(%x) can't intersect\n",
> uncompressed_joiner_pipes, bigjoiner_pipes);
> + drm_WARN(&dev_priv->drm, (ultrajoiner_pipes & bigjoiner_pipes) != ultrajoiner_pipes,
> + "Ultrajoiner pipes(%x) should be bigjoiner pipes(%x)\n",
> + ultrajoiner_pipes, bigjoiner_pipes);
> +
> drm_WARN(&dev_priv->drm, secondary_bigjoiner_pipes !=
> - expected_secondary_pipes(primary_bigjoiner_pipes),
> + expected_secondary_bigjoiner_pipes(primary_bigjoiner_pipes),
> "Wrong secondary bigjoiner pipes(expected %x, current %x)\n",
> - expected_secondary_pipes(primary_bigjoiner_pipes),
> + expected_secondary_bigjoiner_pipes(primary_bigjoiner_pipes),
> secondary_bigjoiner_pipes);
> drm_WARN(&dev_priv->drm, secondary_uncompressed_joiner_pipes !=
> - expected_secondary_pipes(primary_uncompressed_joiner_pipes),
> + expected_secondary_bigjoiner_pipes(primary_uncompressed_joiner_pipes),
> "Wrong secondary uncompressed joiner pipes(expected %x, current %x)\n",
> - expected_secondary_pipes(primary_uncompressed_joiner_pipes),
> + expected_secondary_bigjoiner_pipes(primary_uncompressed_joiner_pipes),
> secondary_uncompressed_joiner_pipes);
> + drm_WARN(&dev_priv->drm, secondary_ultrajoiner_pipes !=
> + expected_secondary_ultrajoiner_pipes(primary_ultrajoiner_pipes),
> + "Wrong secondary ultrajoiner pipes(expected %x, current %x)\n",
> + expected_secondary_ultrajoiner_pipes(primary_ultrajoiner_pipes),
> + secondary_ultrajoiner_pipes);
>
> *primary_pipes = 0;
> *secondary_pipes = 0;
>
> - *primary_pipes = primary_uncompressed_joiner_pipes | primary_bigjoiner_pipes;
> + *primary_pipes = primary_uncompressed_joiner_pipes | primary_bigjoiner_pipes |
> + primary_ultrajoiner_pipes;
>
> - *secondary_pipes = secondary_uncompressed_joiner_pipes | secondary_bigjoiner_pipes;
> + *secondary_pipes = secondary_uncompressed_joiner_pipes | secondary_bigjoiner_pipes |
> + secondary_ultrajoiner_pipes;
> }
>
> -static enum pipe get_joiner_primary_pipe(enum pipe pipe, u8 primary_pipes, u8 secondary_pipes)
> +static enum pipe get_joiner_primary_pipe(enum pipe pipe, u8 primary_pipes,
> + u8 secondary_pipes, bool ultrajoiner_used)
> {
> if ((secondary_pipes & BIT(pipe)) == 0)
> return pipe;
> @@ -3690,27 +3753,37 @@ static enum pipe get_joiner_primary_pipe(enum pipe pipe, u8 primary_pipes, u8 se
> /* ignore everything above our pipe */
> primary_pipes &= ~GENMASK(7, pipe);
>
> - /* highest remaining bit should be our primary pipe */
> - return fls(primary_pipes) - 1;
> + if (!ultrajoiner_used)
> + /* highest remaining bit should be our master pipe */
> + return fls(primary_pipes) - 1;
> +
> + /* lowest remaining bit should be our primary master pipe */
> + return ffs(primary_pipes) - 1;
> }
>
> -static u8 get_joiner_secondary_pipes(enum pipe pipe, u8 primary_pipes, u8 secondary_pipes)
> +static u8 get_joiner_secondary_pipes(enum pipe pipe, u8 primary_pipes,
> + u8 secondary_pipes, bool ultrajoiner_used)
> {
> enum pipe primary_pipe, next_primary_pipe;
>
> - primary_pipe = get_joiner_primary_pipe(pipe, primary_pipes, secondary_pipes);
> + primary_pipe = get_joiner_primary_pipe(pipe, primary_pipes,
> + secondary_pipes, ultrajoiner_used);
>
> if ((primary_pipes & BIT(primary_pipe)) == 0)
> return 0;
>
> - /* ignore our primary pipe and everything below it */
> - primary_pipes &= ~GENMASK(primary_pipe, 0);
> - /* make sure a high bit is set for the ffs() */
> - primary_pipes |= BIT(7);
> - /* lowest remaining bit should be the next primary pipe */
> - next_primary_pipe = ffs(primary_pipes) - 1;
> + if (!ultrajoiner_used) {
> + /* ignore our primary pipe and everything below it */
> + primary_pipes &= ~GENMASK(primary_pipe, 0);
> + /* make sure a high bit is set for the ffs() */
> + primary_pipes |= BIT(7);
> + /* lowest remaining bit should be the next primary pipe */
> + next_primary_pipe = ffs(primary_pipes) - 1;
>
> - return secondary_pipes & GENMASK(next_primary_pipe - 1, primary_pipe);
> + return secondary_pipes & GENMASK(next_primary_pipe - 1, primary_pipe);
> + } else {
> + return (secondary_pipes | primary_pipes) & ~BIT(primary_pipe);
> + }
There are far too many things happening in this one patch.
Needs to be split into sensible parts.
> }
>
> static u8 hsw_panel_transcoders(struct drm_i915_private *i915)
> @@ -3731,6 +3804,7 @@ static u8 hsw_enabled_transcoders(struct intel_crtc *crtc)
> enum transcoder cpu_transcoder;
> u8 primary_pipes, secondary_pipes;
> u8 enabled_transcoders = 0;
> + bool ultrajoiner_used;
>
> /*
> * XXX: Do intel_display_power_get_if_enabled before reading this (for
> @@ -3781,11 +3855,12 @@ static u8 hsw_enabled_transcoders(struct intel_crtc *crtc)
> if (transcoder_ddi_func_is_enabled(dev_priv, cpu_transcoder))
> enabled_transcoders |= BIT(cpu_transcoder);
>
> - /* joiner secondary -> consider the primary pipe's transcoder as well */
> - enabled_joiner_pipes(dev_priv, &primary_pipes, &secondary_pipes);
> + /* joiner slave -> consider the master pipe's transcoder as well */
> + enabled_joiner_pipes(dev_priv, &primary_pipes, &secondary_pipes, &ultrajoiner_used);
> if (secondary_pipes & BIT(crtc->pipe)) {
> cpu_transcoder = (enum transcoder)
> - get_joiner_primary_pipe(crtc->pipe, primary_pipes, secondary_pipes);
> + get_joiner_primary_pipe(crtc->pipe, primary_pipes,
> + secondary_pipes, ultrajoiner_used);
> if (transcoder_ddi_func_is_enabled(dev_priv, cpu_transcoder))
> enabled_transcoders |= BIT(cpu_transcoder);
> }
> @@ -3917,16 +3992,18 @@ static void intel_joiner_get_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);
> u8 primary_pipes, secondary_pipes;
> + bool ultrajoiner_used;
> enum pipe pipe = crtc->pipe;
>
> - enabled_joiner_pipes(i915, &primary_pipes, &secondary_pipes);
> + enabled_joiner_pipes(i915, &primary_pipes, &secondary_pipes, &ultrajoiner_used);
>
> if (((primary_pipes | secondary_pipes) & BIT(pipe)) == 0)
> return;
>
> - crtc_state->joiner_pipes =
> - BIT(get_joiner_primary_pipe(pipe, primary_pipes, secondary_pipes)) |
> - get_joiner_secondary_pipes(pipe, primary_pipes, secondary_pipes);
> + crtc_state->joiner_pipes = BIT(get_joiner_primary_pipe(pipe, primary_pipes,
> + secondary_pipes, ultrajoiner_used)) |
> + get_joiner_secondary_pipes(pipe, primary_pipes,
> + secondary_pipes, ultrajoiner_used);
> }
>
> static bool hsw_get_pipe_config(struct intel_crtc *crtc,
> diff --git a/drivers/gpu/drm/i915/display/intel_vdsc_regs.h b/drivers/gpu/drm/i915/display/intel_vdsc_regs.h
> index f921ad67b587..db07c9775892 100644
> --- a/drivers/gpu/drm/i915/display/intel_vdsc_regs.h
> +++ b/drivers/gpu/drm/i915/display/intel_vdsc_regs.h
> @@ -37,6 +37,9 @@
> #define SPLITTER_CONFIGURATION_MASK REG_GENMASK(26, 25)
> #define SPLITTER_CONFIGURATION_2_SEGMENT REG_FIELD_PREP(SPLITTER_CONFIGURATION_MASK, 0)
> #define SPLITTER_CONFIGURATION_4_SEGMENT REG_FIELD_PREP(SPLITTER_CONFIGURATION_MASK, 1)
> +
> +#define ULTRA_JOINER_ENABLE REG_BIT(23)
> +#define PRIMARY_ULTRA_JOINER_ENABLE REG_BIT(22)
> #define UNCOMPRESSED_JOINER_PRIMARY (1 << 21)
> #define UNCOMPRESSED_JOINER_SECONDARY (1 << 20)
>
> --
> 2.45.2
--
Ville Syrjälä
Intel
More information about the Intel-gfx
mailing list