[Intel-gfx] [PATCH 02/13] drm/i915: Eliminate usage of pipe_wm_parameters from ILK-style WM
Matt Roper
matthew.d.roper at intel.com
Wed Aug 26 08:37:41 PDT 2015
On Wed, Aug 26, 2015 at 04:39:12PM +0300, Ville Syrjälä wrote:
> On Thu, Aug 20, 2015 at 06:11:53PM -0700, Matt Roper wrote:
> > Just pull the info out of the CRTC state structure rather than staging
> > it in an additional structure.
> >
> > Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
> > ---
> > drivers/gpu/drm/i915/intel_pm.c | 84 ++++++++++++++---------------------------
> > 1 file changed, 28 insertions(+), 56 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> > index c9cf7cf..d82ea82 100644
> > --- a/drivers/gpu/drm/i915/intel_pm.c
> > +++ b/drivers/gpu/drm/i915/intel_pm.c
> > @@ -1787,12 +1787,6 @@ struct skl_pipe_wm_parameters {
> > struct intel_plane_wm_parameters cursor;
> > };
> >
> > -struct ilk_pipe_wm_parameters {
> > - bool active;
> > - uint32_t pipe_htotal;
> > - uint32_t pixel_rate;
> > -};
> > -
> > struct ilk_wm_maximums {
> > uint16_t pri;
> > uint16_t spr;
> > @@ -1811,7 +1805,7 @@ struct intel_wm_config {
> > * For both WM_PIPE and WM_LP.
> > * mem_value must be in 0.1us units.
> > */
> > -static uint32_t ilk_compute_pri_wm(const struct ilk_pipe_wm_parameters *params,
> > +static uint32_t ilk_compute_pri_wm(const struct intel_crtc_state *cstate,
> > const struct intel_plane_state *pstate,
> > uint32_t mem_value,
> > bool is_lp)
> > @@ -1819,16 +1813,16 @@ static uint32_t ilk_compute_pri_wm(const struct ilk_pipe_wm_parameters *params,
> > int bpp = pstate->base.fb ? pstate->base.fb->bits_per_pixel / 8 : 0;
> > uint32_t method1, method2;
> >
> > - if (!params->active || !pstate->visible)
> > + if (!cstate->base.active || !pstate->visible)
> > return 0;
>
> Previously we lookd at crtc->active, now we look at state->base.active.
> Since the atomic modeset code is a bit insane and doesn't have an
> intermediate atomic state for the disable->re-enable case, I'm not sure
> this will fly currently.
>
> I'd be much happier if someone added the intermediate atomic state to
> handle pipe disabling in a nicer way. Afterwards we should be able to
> elimiate all special cases dealing with watermarks and just do the wm
> updates from the commit_planes (or whatever it was called).
I think I'm missing some of the context for your comment. At the moment
we update watermarks after vblank if the CRTC is being re-enabled and
before the vblank in other cases, so it seems like if we use
crtc->active here, then when we get to the post-vblank watermark update
we won't have any watermark values since we'll be acting on the old data
that says the CRTC is still off.
When you talk about intermediate atomic state are you saying that you
want to see CRTC enables take a two step process where the CRTC gets
enabled with no planes first, then all the planes get turned on during
the next vblank?
Matt
>
> >
> > - method1 = ilk_wm_method1(params->pixel_rate, bpp, mem_value);
> > + method1 = ilk_wm_method1(ilk_pipe_pixel_rate(cstate), bpp, mem_value);
> >
> > if (!is_lp)
> > return method1;
> >
> > - method2 = ilk_wm_method2(params->pixel_rate,
> > - params->pipe_htotal,
> > + method2 = ilk_wm_method2(ilk_pipe_pixel_rate(cstate),
> > + cstate->base.adjusted_mode.crtc_htotal,
> > drm_rect_width(&pstate->dst),
> > bpp,
> > mem_value);
> > @@ -1840,19 +1834,19 @@ static uint32_t ilk_compute_pri_wm(const struct ilk_pipe_wm_parameters *params,
> > * For both WM_PIPE and WM_LP.
> > * mem_value must be in 0.1us units.
> > */
> > -static uint32_t ilk_compute_spr_wm(const struct ilk_pipe_wm_parameters *params,
> > +static uint32_t ilk_compute_spr_wm(const struct intel_crtc_state *cstate,
> > const struct intel_plane_state *pstate,
> > uint32_t mem_value)
> > {
> > int bpp = pstate->base.fb ? pstate->base.fb->bits_per_pixel / 8 : 0;
> > uint32_t method1, method2;
> >
> > - if (!params->active || !pstate->visible)
> > + if (!cstate->base.active || !pstate->visible)
> > return 0;
> >
> > - method1 = ilk_wm_method1(params->pixel_rate, bpp, mem_value);
> > - method2 = ilk_wm_method2(params->pixel_rate,
> > - params->pipe_htotal,
> > + method1 = ilk_wm_method1(ilk_pipe_pixel_rate(cstate), bpp, mem_value);
> > + method2 = ilk_wm_method2(ilk_pipe_pixel_rate(cstate),
> > + cstate->base.adjusted_mode.crtc_htotal,
> > drm_rect_width(&pstate->dst),
> > bpp,
> > mem_value);
> > @@ -1863,30 +1857,30 @@ static uint32_t ilk_compute_spr_wm(const struct ilk_pipe_wm_parameters *params,
> > * For both WM_PIPE and WM_LP.
> > * mem_value must be in 0.1us units.
> > */
> > -static uint32_t ilk_compute_cur_wm(const struct ilk_pipe_wm_parameters *params,
> > +static uint32_t ilk_compute_cur_wm(const struct intel_crtc_state *cstate,
> > const struct intel_plane_state *pstate,
> > uint32_t mem_value)
> > {
> > int bpp = pstate->base.fb ? pstate->base.fb->bits_per_pixel / 8 : 0;
> >
> > - if (!params->active || !pstate->visible)
> > + if (!cstate->base.active || !pstate->visible)
> > return 0;
> >
> > - return ilk_wm_method2(params->pixel_rate,
> > - params->pipe_htotal,
> > + return ilk_wm_method2(ilk_pipe_pixel_rate(cstate),
> > + cstate->base.adjusted_mode.crtc_htotal,
> > drm_rect_width(&pstate->dst),
> > bpp,
> > mem_value);
> > }
> >
> > /* Only for WM_LP. */
> > -static uint32_t ilk_compute_fbc_wm(const struct ilk_pipe_wm_parameters *params,
> > +static uint32_t ilk_compute_fbc_wm(const struct intel_crtc_state *cstate,
> > const struct intel_plane_state *pstate,
> > uint32_t pri_val)
> > {
> > int bpp = pstate->base.fb ? pstate->base.fb->bits_per_pixel / 8 : 0;
> >
> > - if (!params->active || !pstate->visible)
> > + if (!cstate->base.active || !pstate->visible)
> > return 0;
> >
> > return ilk_wm_fbc(pri_val, drm_rect_width(&pstate->dst), bpp);
> > @@ -2056,7 +2050,7 @@ static bool ilk_validate_wm_level(int level,
> > static void ilk_compute_wm_level(const struct drm_i915_private *dev_priv,
> > const struct intel_crtc *intel_crtc,
> > int level,
> > - const struct ilk_pipe_wm_parameters *p,
> > + struct intel_crtc_state *cstate,
> > struct intel_wm_level *result)
> > {
> > struct intel_plane *intel_plane;
> > @@ -2077,18 +2071,18 @@ static void ilk_compute_wm_level(const struct drm_i915_private *dev_priv,
> >
> > switch (intel_plane->base.type) {
> > case DRM_PLANE_TYPE_PRIMARY:
> > - result->pri_val = ilk_compute_pri_wm(p, pstate,
> > + result->pri_val = ilk_compute_pri_wm(cstate, pstate,
> > pri_latency,
> > level);
> > - result->fbc_val = ilk_compute_fbc_wm(p, pstate,
> > + result->fbc_val = ilk_compute_fbc_wm(cstate, pstate,
> > result->pri_val);
> > break;
> > case DRM_PLANE_TYPE_OVERLAY:
> > - result->spr_val = ilk_compute_spr_wm(p, pstate,
> > + result->spr_val = ilk_compute_spr_wm(cstate, pstate,
> > spr_latency);
> > break;
> > case DRM_PLANE_TYPE_CURSOR:
> > - result->cur_val = ilk_compute_cur_wm(p, pstate,
> > + result->cur_val = ilk_compute_cur_wm(cstate, pstate,
> > cur_latency);
> > break;
> > }
> > @@ -2352,19 +2346,6 @@ static void skl_setup_wm_latency(struct drm_device *dev)
> > intel_print_wm_latency(dev, "Gen9 Plane", dev_priv->wm.skl_latency);
> > }
> >
> > -static void ilk_compute_wm_parameters(struct drm_crtc *crtc,
> > - struct ilk_pipe_wm_parameters *p)
> > -{
> > - struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> > -
> > - if (!intel_crtc->active)
> > - return;
> > -
> > - p->active = true;
> > - p->pipe_htotal = intel_crtc->config->base.adjusted_mode.crtc_htotal;
> > - p->pixel_rate = ilk_pipe_pixel_rate(intel_crtc->config);
> > -}
> > -
> > static void ilk_compute_wm_config(struct drm_device *dev,
> > struct intel_wm_config *config)
> > {
> > @@ -2384,10 +2365,10 @@ static void ilk_compute_wm_config(struct drm_device *dev,
> > }
> >
> > /* Compute new watermarks for the pipe */
> > -static bool intel_compute_pipe_wm(struct drm_crtc *crtc,
> > - const struct ilk_pipe_wm_parameters *params,
> > +static bool intel_compute_pipe_wm(struct intel_crtc_state *cstate,
> > struct intel_pipe_wm *pipe_wm)
> > {
> > + struct drm_crtc *crtc = cstate->base.crtc;
> > struct drm_device *dev = crtc->dev;
> > const struct drm_i915_private *dev_priv = dev->dev_private;
> > struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> > @@ -2412,8 +2393,7 @@ static bool intel_compute_pipe_wm(struct drm_crtc *crtc,
> > drm_rect_width(&sprstate->dst) != drm_rect_width(&sprstate->src) >> 16 ||
> > drm_rect_height(&sprstate->dst) != drm_rect_height(&sprstate->src) >> 16;
> >
> > -
> > - pipe_wm->pipe_enabled = params->active;
> > + pipe_wm->pipe_enabled = cstate->base.active;
> > pipe_wm->sprites_enabled = sprstate->visible;
> > pipe_wm->sprites_scaled = config.sprites_scaled;
> >
> > @@ -2425,7 +2405,7 @@ static bool intel_compute_pipe_wm(struct drm_crtc *crtc,
> > if (config.sprites_scaled)
> > max_level = 0;
> >
> > - ilk_compute_wm_level(dev_priv, intel_crtc, 0, params, &pipe_wm->wm[0]);
> > + ilk_compute_wm_level(dev_priv, intel_crtc, 0, cstate, &pipe_wm->wm[0]);
> >
> > if (IS_HASWELL(dev) || IS_BROADWELL(dev))
> > pipe_wm->linetime = hsw_compute_linetime_wm(dev, crtc);
> > @@ -2442,7 +2422,7 @@ static bool intel_compute_pipe_wm(struct drm_crtc *crtc,
> > for (level = 1; level <= max_level; level++) {
> > struct intel_wm_level wm = {};
> >
> > - ilk_compute_wm_level(dev_priv, intel_crtc, level, params, &wm);
> > + ilk_compute_wm_level(dev_priv, intel_crtc, level, cstate, &wm);
> >
> > /*
> > * Disable any watermark level that exceeds the
> > @@ -3748,19 +3728,17 @@ skl_update_sprite_wm(struct drm_plane *plane, struct drm_crtc *crtc,
> > static void ilk_update_wm(struct drm_crtc *crtc)
> > {
> > struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> > + struct intel_crtc_state *cstate = to_intel_crtc_state(crtc->state);
> > struct drm_device *dev = crtc->dev;
> > struct drm_i915_private *dev_priv = dev->dev_private;
> > struct ilk_wm_maximums max;
> > - struct ilk_pipe_wm_parameters params = {};
> > struct ilk_wm_values results = {};
> > enum intel_ddb_partitioning partitioning;
> > struct intel_pipe_wm pipe_wm = {};
> > struct intel_pipe_wm lp_wm_1_2 = {}, lp_wm_5_6 = {}, *best_lp_wm;
> > struct intel_wm_config config = {};
> >
> > - ilk_compute_wm_parameters(crtc, ¶ms);
> > -
> > - intel_compute_pipe_wm(crtc, ¶ms, &pipe_wm);
> > + intel_compute_pipe_wm(cstate, &pipe_wm);
> >
> > if (!memcmp(&intel_crtc->wm.active, &pipe_wm, sizeof(pipe_wm)))
> > return;
> > @@ -3800,12 +3778,6 @@ ilk_update_sprite_wm(struct drm_plane *plane,
> > struct drm_device *dev = plane->dev;
> > struct intel_plane *intel_plane = to_intel_plane(plane);
> >
> > - intel_plane->wm.enabled = enabled;
> > - intel_plane->wm.scaled = scaled;
> > - intel_plane->wm.horiz_pixels = sprite_width;
> > - intel_plane->wm.vert_pixels = sprite_width;
> > - intel_plane->wm.bytes_per_pixel = pixel_size;
> > -
> > /*
> > * IVB workaround: must disable low power watermarks for at least
> > * one frame before enabling scaling. LP watermarks can be re-enabled
> > --
> > 2.1.4
> >
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx at lists.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/intel-gfx
>
> --
> Ville Syrjälä
> Intel OTC
--
Matt Roper
Graphics Software Engineer
IoTG Platform Enabling & Development
Intel Corporation
(916) 356-2795
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