[Intel-gfx] [PATCH v18 2/8] drm/i915: Introduce skl_plane_wm_level accessor.
Lisovskiy, Stanislav
stanislav.lisovskiy at intel.com
Fri Feb 28 12:23:40 UTC 2020
>> v2: - plane_id -> plane->id(Ville Syrjälä)
>When did I say that? Can't find a previous review of this patch.
>Anywyas, that change seems to cause a lot of needless noise into the
>patch, and atm I can't see why we'd require it.
Your comment was in https://patchwork.freedesktop.org/patch/345025/?series=68028&rev=14,
however I seem to have wrongly interpreted it. I think my motivation to switch
to plane based iteration was because its way easier to call skl_plane_wm_level
function then, because it takes plane itself as a parameter, also as it had already
an id, thought it is also better that way, rather than keeping one more variable
instead. Whatever.. I'm fine with both, that is not critical anyways.
Stan
________________________________
From: Ville Syrjälä <ville.syrjala at linux.intel.com>
Sent: Thursday, February 27, 2020 5:51:52 PM
To: Lisovskiy, Stanislav
Cc: intel-gfx at lists.freedesktop.org; Ausmus, James; Saarinen, Jani; Roper, Matthew D
Subject: Re: [PATCH v18 2/8] drm/i915: Introduce skl_plane_wm_level accessor.
On Mon, Feb 24, 2020 at 05:32:34PM +0200, Stanislav Lisovskiy wrote:
> For future Gen12 SAGV implementation we need to
> seemlessly alter wm levels calculated, depending
> on whether we are allowed to enable SAGV or not.
>
> So this accessor will give additional flexibility
> to do that.
>
> Currently this accessor is still simply working
> as "pass-through" function. This will be changed
> in next coming patches from this series.
>
> v2: - plane_id -> plane->id(Ville Syrjälä)
When did I say that? Can't find a previous review of this patch.
Anywyas, that change seems to cause a lot of needless noise into the
patch, and atm I can't see why we'd require it.
> - Moved wm_level var to have more local scope
> (Ville Syrjälä)
> - Renamed yuv to color_plane(Ville Syrjälä) in
> skl_plane_wm_level
>
> Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy at intel.com>
> ---
> drivers/gpu/drm/i915/intel_pm.c | 120 +++++++++++++++++++++-----------
> 1 file changed, 81 insertions(+), 39 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index d6933e382657..e1d167429489 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -4548,6 +4548,18 @@ icl_get_total_relative_data_rate(struct intel_crtc_state *crtc_state,
> return total_data_rate;
> }
>
> +static const struct skl_wm_level *
> +skl_plane_wm_level(struct intel_plane *plane,
> + const struct intel_crtc_state *crtc_state,
nit: I'd put the crtc_state as the first parameter as that's the thing
we're operating on. The other stuff just specifies which piece we want
to dig out.
> + int level,
> + int color_plane)
> +{
> + const struct skl_plane_wm *wm =
> + &crtc_state->wm.skl.optimal.planes[plane->id];
> +
> + return color_plane ? &wm->uv_wm[level] : &wm->wm[level];
> +}
> +
> static int
> skl_allocate_pipe_ddb(struct intel_crtc_state *crtc_state)
> {
> @@ -4560,7 +4572,7 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *crtc_state)
> u16 total[I915_MAX_PLANES] = {};
> u16 uv_total[I915_MAX_PLANES] = {};
> u64 total_data_rate;
> - enum plane_id plane_id;
> + struct intel_plane *plane;
> int num_active;
> u64 plane_data_rate[I915_MAX_PLANES] = {};
> u64 uv_plane_data_rate[I915_MAX_PLANES] = {};
> @@ -4612,22 +4624,28 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *crtc_state)
> */
> for (level = ilk_wm_max_level(dev_priv); level >= 0; level--) {
> blocks = 0;
> - for_each_plane_id_on_crtc(intel_crtc, plane_id) {
> - const struct skl_plane_wm *wm =
> - &crtc_state->wm.skl.optimal.planes[plane_id];
>
> - if (plane_id == PLANE_CURSOR) {
> - if (wm->wm[level].min_ddb_alloc > total[PLANE_CURSOR]) {
> + for_each_intel_plane_on_crtc(&dev_priv->drm, intel_crtc, plane) {
> + const struct skl_wm_level *wm_level;
> + const struct skl_wm_level *wm_uv_level;
> +
> + wm_level = skl_plane_wm_level(plane, crtc_state,
> + level, false);
> + wm_uv_level = skl_plane_wm_level(plane, crtc_state,
> + level, true);
false/true aren't particularly sensible color plane indices.
> +
> + if (plane->id == PLANE_CURSOR) {
> + if (wm_level->min_ddb_alloc > total[PLANE_CURSOR]) {
> drm_WARN_ON(&dev_priv->drm,
> - wm->wm[level].min_ddb_alloc != U16_MAX);
> + wm_level->min_ddb_alloc != U16_MAX);
> blocks = U32_MAX;
> break;
> }
> continue;
> }
>
> - blocks += wm->wm[level].min_ddb_alloc;
> - blocks += wm->uv_wm[level].min_ddb_alloc;
> + blocks += wm_level->min_ddb_alloc;
> + blocks += wm_uv_level->min_ddb_alloc;
> }
>
> if (blocks <= alloc_size) {
> @@ -4649,13 +4667,18 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *crtc_state)
> * watermark level, plus an extra share of the leftover blocks
> * proportional to its relative data rate.
> */
> - for_each_plane_id_on_crtc(intel_crtc, plane_id) {
> - const struct skl_plane_wm *wm =
> - &crtc_state->wm.skl.optimal.planes[plane_id];
> + for_each_intel_plane_on_crtc(&dev_priv->drm, intel_crtc, plane) {
> + const struct skl_wm_level *wm_level;
> + const struct skl_wm_level *wm_uv_level;
> u64 rate;
> u16 extra;
>
> - if (plane_id == PLANE_CURSOR)
> + wm_level = skl_plane_wm_level(plane, crtc_state,
> + level, false);
> + wm_uv_level = skl_plane_wm_level(plane, crtc_state,
> + level, true);
> +
> + if (plane->id == PLANE_CURSOR)
> continue;
>
> /*
> @@ -4665,22 +4688,22 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *crtc_state)
> if (total_data_rate == 0)
> break;
>
> - rate = plane_data_rate[plane_id];
> + rate = plane_data_rate[plane->id];
> extra = min_t(u16, alloc_size,
> DIV64_U64_ROUND_UP(alloc_size * rate,
> total_data_rate));
> - total[plane_id] = wm->wm[level].min_ddb_alloc + extra;
> + total[plane->id] = wm_level->min_ddb_alloc + extra;
> alloc_size -= extra;
> total_data_rate -= rate;
>
> if (total_data_rate == 0)
> break;
>
> - rate = uv_plane_data_rate[plane_id];
> + rate = uv_plane_data_rate[plane->id];
> extra = min_t(u16, alloc_size,
> DIV64_U64_ROUND_UP(alloc_size * rate,
> total_data_rate));
> - uv_total[plane_id] = wm->uv_wm[level].min_ddb_alloc + extra;
> + uv_total[plane->id] = wm_uv_level->min_ddb_alloc + extra;
> alloc_size -= extra;
> total_data_rate -= rate;
> }
> @@ -4688,29 +4711,29 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *crtc_state)
>
> /* Set the actual DDB start/end points for each plane */
> start = alloc->start;
> - for_each_plane_id_on_crtc(intel_crtc, plane_id) {
> + for_each_intel_plane_on_crtc(&dev_priv->drm, intel_crtc, plane) {
> struct skl_ddb_entry *plane_alloc =
> - &crtc_state->wm.skl.plane_ddb_y[plane_id];
> + &crtc_state->wm.skl.plane_ddb_y[plane->id];
> struct skl_ddb_entry *uv_plane_alloc =
> - &crtc_state->wm.skl.plane_ddb_uv[plane_id];
> + &crtc_state->wm.skl.plane_ddb_uv[plane->id];
>
> - if (plane_id == PLANE_CURSOR)
> + if (plane->id == PLANE_CURSOR)
> continue;
>
> /* Gen11+ uses a separate plane for UV watermarks */
> drm_WARN_ON(&dev_priv->drm,
> - INTEL_GEN(dev_priv) >= 11 && uv_total[plane_id]);
> + INTEL_GEN(dev_priv) >= 11 && uv_total[plane->id]);
>
> /* Leave disabled planes at (0,0) */
> - if (total[plane_id]) {
> + if (total[plane->id]) {
> plane_alloc->start = start;
> - start += total[plane_id];
> + start += total[plane->id];
> plane_alloc->end = start;
> }
>
> - if (uv_total[plane_id]) {
> + if (uv_total[plane->id]) {
> uv_plane_alloc->start = start;
> - start += uv_total[plane_id];
> + start += uv_total[plane->id];
> uv_plane_alloc->end = start;
> }
> }
> @@ -4722,9 +4745,16 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *crtc_state)
> * that aren't actually possible.
> */
> for (level++; level <= ilk_wm_max_level(dev_priv); level++) {
> - for_each_plane_id_on_crtc(intel_crtc, plane_id) {
> + for_each_intel_plane_on_crtc(&dev_priv->drm, intel_crtc, plane) {
> + const struct skl_wm_level *wm_level;
> + const struct skl_wm_level *wm_uv_level;
> struct skl_plane_wm *wm =
> - &crtc_state->wm.skl.optimal.planes[plane_id];
> + &crtc_state->wm.skl.optimal.planes[plane->id];
> +
> + wm_level = skl_plane_wm_level(plane, crtc_state,
> + level, false);
> + wm_uv_level = skl_plane_wm_level(plane, crtc_state,
> + level, true);
>
> /*
> * We only disable the watermarks for each plane if
> @@ -4738,9 +4768,10 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *crtc_state)
> * planes must be enabled before the level will be used."
> * So this is actually safe to do.
> */
> - if (wm->wm[level].min_ddb_alloc > total[plane_id] ||
> - wm->uv_wm[level].min_ddb_alloc > uv_total[plane_id])
> - memset(&wm->wm[level], 0, sizeof(wm->wm[level]));
> + if (wm_level->min_ddb_alloc > total[plane->id] ||
> + wm_uv_level->min_ddb_alloc > uv_total[plane->id])
> + memset(&wm->wm[level], 0,
> + sizeof(struct skl_wm_level));
>
> /*
> * Wa_1408961008:icl, ehl
> @@ -4748,9 +4779,14 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *crtc_state)
> */
> if (IS_GEN(dev_priv, 11) &&
> level == 1 && wm->wm[0].plane_en) {
> - wm->wm[level].plane_res_b = wm->wm[0].plane_res_b;
> - wm->wm[level].plane_res_l = wm->wm[0].plane_res_l;
> - wm->wm[level].ignore_lines = wm->wm[0].ignore_lines;
> + wm_level = skl_plane_wm_level(plane, crtc_state,
> + 0, false);
> + wm->wm[level].plane_res_b =
> + wm_level->plane_res_b;
> + wm->wm[level].plane_res_l =
> + wm_level->plane_res_l;
> + wm->wm[level].ignore_lines =
> + wm_level->ignore_lines;
> }
> }
> }
> @@ -4759,11 +4795,11 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *crtc_state)
> * Go back and disable the transition watermark if it turns out we
> * don't have enough DDB blocks for it.
> */
> - for_each_plane_id_on_crtc(intel_crtc, plane_id) {
> + for_each_intel_plane_on_crtc(&dev_priv->drm, intel_crtc, plane) {
> struct skl_plane_wm *wm =
> - &crtc_state->wm.skl.optimal.planes[plane_id];
> + &crtc_state->wm.skl.optimal.planes[plane->id];
>
> - if (wm->trans_wm.plane_res_b >= total[plane_id])
> + if (wm->trans_wm.plane_res_b >= total[plane->id])
> memset(&wm->trans_wm, 0, sizeof(wm->trans_wm));
> }
>
> @@ -5354,10 +5390,13 @@ void skl_write_plane_wm(struct intel_plane *plane,
> &crtc_state->wm.skl.plane_ddb_y[plane_id];
> const struct skl_ddb_entry *ddb_uv =
> &crtc_state->wm.skl.plane_ddb_uv[plane_id];
> + const struct skl_wm_level *wm_level;
These can be in tighter scope.
>
> for (level = 0; level <= max_level; level++) {
> + wm_level = skl_plane_wm_level(plane, crtc_state, level, false);
> +
> skl_write_wm_level(dev_priv, PLANE_WM(pipe, plane_id, level),
> - &wm->wm[level]);
> + wm_level);
> }
> skl_write_wm_level(dev_priv, PLANE_WM_TRANS(pipe, plane_id),
> &wm->trans_wm);
> @@ -5388,10 +5427,13 @@ void skl_write_cursor_wm(struct intel_plane *plane,
> &crtc_state->wm.skl.optimal.planes[plane_id];
> const struct skl_ddb_entry *ddb =
> &crtc_state->wm.skl.plane_ddb_y[plane_id];
> + const struct skl_wm_level *wm_level;
>
> for (level = 0; level <= max_level; level++) {
> + wm_level = skl_plane_wm_level(plane, crtc_state, level, false);
> +
> skl_write_wm_level(dev_priv, CUR_WM(pipe, level),
> - &wm->wm[level]);
> + wm_level);
> }
> skl_write_wm_level(dev_priv, CUR_WM_TRANS(pipe), &wm->trans_wm);
>
> --
> 2.24.1.485.gad05a3d8e5
--
Ville Syrjälä
Intel
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