Re: [PATCH v2 05/14] drm/msm/dpu: handle pipes as array

From: Jun Nie
Date: Fri Oct 11 2024 - 03:18:23 EST

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Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> 于2024年10月11日周五 15:10写道：
>
> On Fri, 11 Oct 2024 at 09:49, Jun Nie <jun.nie@xxxxxxxxxx> wrote:
> >
> > Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> 于2024年10月10日周四 21:08写道：
> > >
> > > On Wed, Oct 09, 2024 at 04:50:18PM GMT, Jun Nie wrote:
> > > > Store pipes in array with removing dedicated r_pipe. There are
> > > > 2 pipes in a drm plane at most currently. While 4 pipes are
> > > > needed for new usage case. This change generalize the handling
> > > > to pipe pair and ease handling to another pipe pair later.
> > > >
> > > > Signed-off-by: Jun Nie <jun.nie@xxxxxxxxxx>
> > > > ---
> > > > drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 34 +++---
> > > > drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 167 ++++++++++++++++--------------
> > > > drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h | 12 +--
> > > > drivers/gpu/drm/msm/disp/dpu1/dpu_trace.h | 10 +-
> > > > 4 files changed, 111 insertions(+), 112 deletions(-)
> > > >
> > > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> > > > index 3e0e6e9757da5..9656b1df0f122 100644
> > > > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> > > > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> > > > @@ -411,7 +411,7 @@ static void _dpu_crtc_blend_setup_pipe(struct drm_crtc *crtc,
> > > >
> > > > trace_dpu_crtc_setup_mixer(DRMID(crtc), DRMID(plane),
> > > > state, to_dpu_plane_state(state), stage_idx,
> > > > - format->pixel_format,
> > > > + format->pixel_format, pipe,
> > > > modifier);
> > >
> > > Doesn't seem to be related.
> >
> > There is building error when converting r_pipe into pipe array. So I
> > need to change trace code
> > accordingly in the same patch. Otherwise, the error happens just after
> > this patch is applied.
>
> No. It is related to your changes that add pipe argument to
> trace_dpu_crtc_setup_mixer(). Please split that part.

OK.
>
> > >
> > > >
> > > > DRM_DEBUG_ATOMIC("crtc %d stage:%d - plane %d sspp %d fb %d multirect_idx %d\n",
> > > > @@ -442,7 +442,7 @@ static void _dpu_crtc_blend_setup_mixer(struct drm_crtc *crtc,
> > > > const struct msm_format *format;
> > > > struct dpu_hw_ctl *ctl = mixer->lm_ctl;
> > > >
> > > > - uint32_t lm_idx;
> > > > + uint32_t lm_idx, i;
> > > > bool bg_alpha_enable = false;
> > > > DECLARE_BITMAP(fetch_active, SSPP_MAX);
> > > >
> > > > @@ -463,20 +463,15 @@ static void _dpu_crtc_blend_setup_mixer(struct drm_crtc *crtc,
> > > > if (pstate->stage == DPU_STAGE_BASE && format->alpha_enable)
> > > > bg_alpha_enable = true;
> > > >
> > > > - set_bit(pstate->pipe.sspp->idx, fetch_active);
> > > > - _dpu_crtc_blend_setup_pipe(crtc, plane,
> > > > - mixer, cstate->num_mixers,
> > > > - pstate->stage,
> > > > - format, fb ? fb->modifier : 0,
> > > > - &pstate->pipe, 0, stage_cfg);
> > > > -
> > > > - if (pstate->r_pipe.sspp) {
> > > > - set_bit(pstate->r_pipe.sspp->idx, fetch_active);
> > > > + for (i = 0; i < PIPES_PER_STAGE; i++) {
> > > > + if (!pstate->pipe[i].sspp)
> > > > + continue;
> > > > + set_bit(pstate->pipe[i].sspp->idx, fetch_active);
> > > > _dpu_crtc_blend_setup_pipe(crtc, plane,
> > > > mixer, cstate->num_mixers,
> > > > pstate->stage,
> > > > format, fb ? fb->modifier : 0,
> > > > - &pstate->r_pipe, 1, stage_cfg);
> > > > + &pstate->pipe[i], i, stage_cfg);
> > > > }
> > > >
> > > > /* blend config update */
> > > > @@ -1387,15 +1382,12 @@ static int _dpu_debugfs_status_show(struct seq_file *s, void *data)
> > > > seq_printf(s, "\tdst x:%4d dst_y:%4d dst_w:%4d dst_h:%4d\n",
> > > > state->crtc_x, state->crtc_y, state->crtc_w,
> > > > state->crtc_h);
> > > > - seq_printf(s, "\tsspp[0]:%s\n",
> > > > - pstate->pipe.sspp->cap->name);
> > > > - seq_printf(s, "\tmultirect[0]: mode: %d index: %d\n",
> > > > - pstate->pipe.multirect_mode, pstate->pipe.multirect_index);
> > > > - if (pstate->r_pipe.sspp) {
> > > > - seq_printf(s, "\tsspp[1]:%s\n",
> > > > - pstate->r_pipe.sspp->cap->name);
> > > > - seq_printf(s, "\tmultirect[1]: mode: %d index: %d\n",
> > > > - pstate->r_pipe.multirect_mode, pstate->r_pipe.multirect_index);
> > > > + if (pstate->pipe[i].sspp) {
> > > > + seq_printf(s, "\tsspp[%d]:%s\n",
> > > > + i, pstate->pipe[i].sspp->cap->name);
> > > > + seq_printf(s, "\tmultirect[%d]: mode: %d index: %d\n",
> > > > + i, pstate->pipe[i].multirect_mode,
> > > > + pstate->pipe[i].multirect_index);
> > > > }
> > >
> > > I don't expect that this will work.
> >
> > Yes, the loop is missed. Will add it.
> > >
> > > >
> > > > seq_puts(s, "\n");
> > > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> > > > index 4df7cfed4d230..e7006fb8c7734 100644
> > > > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> > > > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> > > > @@ -429,7 +429,7 @@ static void _dpu_plane_setup_scaler3(struct dpu_hw_sspp *pipe_hw,
> > > > uint32_t chroma_subsmpl_h, uint32_t chroma_subsmpl_v,
> > > > unsigned int rotation)
> > > > {
> > > > - uint32_t i;
> > > > + int i;
> > >
> > > Why?
> >
> > No need actually. It is a typo when converting type of many i.
> >
> > >
> > > > bool inline_rotation = rotation & DRM_MODE_ROTATE_90;
> > > >
> > > > /*
> > > > @@ -619,6 +619,7 @@ static void _dpu_plane_color_fill(struct dpu_plane *pdpu,
> > > > struct msm_drm_private *priv = plane->dev->dev_private;
> > > > struct dpu_plane_state *pstate = to_dpu_plane_state(plane->state);
> > > > u32 fill_color = (color & 0xFFFFFF) | ((alpha & 0xFF) << 24);
> > > > + int i;
> > > >
> > > > DPU_DEBUG_PLANE(pdpu, "\n");
> > > >
> > > > @@ -632,12 +633,12 @@ static void _dpu_plane_color_fill(struct dpu_plane *pdpu,
> > > > return;
> > > >
> > > > /* update sspp */
> > > > - _dpu_plane_color_fill_pipe(pstate, &pstate->pipe, &pstate->pipe_cfg.dst_rect,
> > > > - fill_color, fmt);
> > > > -
> > > > - if (pstate->r_pipe.sspp)
> > > > - _dpu_plane_color_fill_pipe(pstate, &pstate->r_pipe, &pstate->r_pipe_cfg.dst_rect,
> > > > - fill_color, fmt);
> > > > + for (i = 0; i < PIPES_PER_STAGE; i++) {
> > > > + if (pstate->pipe[i].sspp)
> > > > + _dpu_plane_color_fill_pipe(pstate, &pstate->pipe[i],
> > > > + &pstate->pipe_cfg[i].dst_rect,
> > > > + fill_color, fmt);
> > > > + }
> > > > }
> > > >
> > > > static int dpu_plane_prepare_fb(struct drm_plane *plane,
> > > > @@ -808,8 +809,8 @@ static int dpu_plane_atomic_check_nopipe(struct drm_plane *plane,
> > > > struct dpu_kms *kms = _dpu_plane_get_kms(&pdpu->base);
> > > > u64 max_mdp_clk_rate = kms->perf.max_core_clk_rate;
> > > > struct dpu_plane_state *pstate = to_dpu_plane_state(new_plane_state);
> > > > - struct dpu_sw_pipe_cfg *pipe_cfg = &pstate->pipe_cfg;
> > > > - struct dpu_sw_pipe_cfg *r_pipe_cfg = &pstate->r_pipe_cfg;
> > > > + struct dpu_sw_pipe_cfg *pipe_cfg;
> > > > + struct dpu_sw_pipe_cfg *r_pipe_cfg;
> > > > struct drm_rect fb_rect = { 0 };
> > > > uint32_t max_linewidth;
> > > >
> > > > @@ -834,6 +835,9 @@ static int dpu_plane_atomic_check_nopipe(struct drm_plane *plane,
> > > > return -EINVAL;
> > > > }
> > > >
> > > > + /* move the assignment here, to ease handling to another pairs later */
> > > > + pipe_cfg = &pstate->pipe_cfg[0];
> > > > + r_pipe_cfg = &pstate->pipe_cfg[1];
> > > > /* state->src is 16.16, src_rect is not */
> > > > drm_rect_fp_to_int(&pipe_cfg->src_rect, &new_plane_state->src);
> > > >
> > > > @@ -916,11 +920,11 @@ static int dpu_plane_atomic_check_pipes(struct drm_plane *plane,
> > > > drm_atomic_get_new_plane_state(state, plane);
> > > > struct dpu_plane *pdpu = to_dpu_plane(plane);
> > > > struct dpu_plane_state *pstate = to_dpu_plane_state(new_plane_state);
> > > > - struct dpu_sw_pipe *pipe = &pstate->pipe;
> > > > - struct dpu_sw_pipe *r_pipe = &pstate->r_pipe;
> > > > const struct msm_format *fmt;
> > > > - struct dpu_sw_pipe_cfg *pipe_cfg = &pstate->pipe_cfg;
> > > > - struct dpu_sw_pipe_cfg *r_pipe_cfg = &pstate->r_pipe_cfg;
> > > > + struct dpu_sw_pipe *pipe = &pstate->pipe[0];
> > > > + struct dpu_sw_pipe *r_pipe = &pstate->pipe[1];
> > > > + struct dpu_sw_pipe_cfg *pipe_cfg = &pstate->pipe_cfg[0];
> > > > + struct dpu_sw_pipe_cfg *r_pipe_cfg = &pstate->pipe_cfg[1];
> > > > uint32_t supported_rotations;
> > > > const struct dpu_sspp_cfg *pipe_hw_caps;
> > > > const struct dpu_sspp_sub_blks *sblk;
> > > > @@ -975,10 +979,10 @@ static int dpu_plane_atomic_check(struct drm_plane *plane,
> > > > struct dpu_plane *pdpu = to_dpu_plane(plane);
> > > > struct dpu_plane_state *pstate = to_dpu_plane_state(new_plane_state);
> > > > struct dpu_kms *dpu_kms = _dpu_plane_get_kms(plane);
> > > > - struct dpu_sw_pipe *pipe = &pstate->pipe;
> > > > - struct dpu_sw_pipe *r_pipe = &pstate->r_pipe;
> > > > - struct dpu_sw_pipe_cfg *pipe_cfg = &pstate->pipe_cfg;
> > > > - struct dpu_sw_pipe_cfg *r_pipe_cfg = &pstate->r_pipe_cfg;
> > > > + struct dpu_sw_pipe *pipe = &pstate->pipe[0];
> > > > + struct dpu_sw_pipe *r_pipe = &pstate->pipe[1];
> > > > + struct dpu_sw_pipe_cfg *pipe_cfg = &pstate->pipe_cfg[0];
> > > > + struct dpu_sw_pipe_cfg *r_pipe_cfg = &pstate->pipe_cfg[1];
> > > > const struct drm_crtc_state *crtc_state = NULL;
> > > >
> > > > if (new_plane_state->crtc)
> > > > @@ -1056,7 +1060,7 @@ static int dpu_plane_virtual_atomic_check(struct drm_plane *plane,
> > > > drm_atomic_get_old_plane_state(state, plane);
> > > > struct dpu_plane_state *pstate = to_dpu_plane_state(plane_state);
> > > > struct drm_crtc_state *crtc_state;
> > > > - int ret;
> > > > + int ret, i;
> > > >
> > > > if (plane_state->crtc)
> > > > crtc_state = drm_atomic_get_new_crtc_state(state,
> > > > @@ -1071,8 +1075,8 @@ static int dpu_plane_virtual_atomic_check(struct drm_plane *plane,
> > > > * resources are freed by dpu_crtc_assign_plane_resources(),
> > > > * but clean them here.
> > > > */
> > > > - pstate->pipe.sspp = NULL;
> > > > - pstate->r_pipe.sspp = NULL;
> > > > + for (i = 0; i < PIPES_PER_STAGE; i++)
> > > > + pstate->pipe[i].sspp = NULL;
> > > >
> > > > return 0;
> > > > }
> > > > @@ -1110,19 +1114,22 @@ static int dpu_plane_virtual_assign_resources(struct drm_crtc *crtc,
> > > > struct dpu_sw_pipe_cfg *r_pipe_cfg;
> > > > const struct msm_format *fmt;
> > > > uint32_t max_linewidth;
> > > > + int i;
> > > >
> > > > if (plane_state->crtc)
> > > > crtc_state = drm_atomic_get_new_crtc_state(state,
> > > > plane_state->crtc);
> > > >
> > > > pstate = to_dpu_plane_state(plane_state);
> > > > - pipe = &pstate->pipe;
> > > > - r_pipe = &pstate->r_pipe;
> > > > - pipe_cfg = &pstate->pipe_cfg;
> > > > - r_pipe_cfg = &pstate->r_pipe_cfg;
> > > >
> > > > - pipe->sspp = NULL;
> > > > - r_pipe->sspp = NULL;
> > > > + /* loop below code for another pair later */
> > >
> > > ??
> >
> > A marker for TODO. The first pair are handled in this patch. A loop will be
> > added later to loop the handing to the pair.
>
> A marker for TODO is 'TODO: foo bar'.
>
> > >
> > > > + pipe = &pstate->pipe[0];
> > > > + r_pipe = &pstate->pipe[1];
> > > > + pipe_cfg = &pstate->pipe_cfg[0];
> > > > + r_pipe_cfg = &pstate->pipe_cfg[1];
> > > > +
> > > > + for (i = 0; i < PIPES_PER_STAGE; i++)
> > > > + pstate->pipe[i].sspp = NULL;
> > > >
> > > > if (!plane_state->fb)
> > > > return -EINVAL;
> > > > @@ -1228,6 +1235,7 @@ void dpu_plane_flush(struct drm_plane *plane)
> > > > {
> > > > struct dpu_plane *pdpu;
> > > > struct dpu_plane_state *pstate;
> > > > + int i;
> > > >
> > > > if (!plane || !plane->state) {
> > > > DPU_ERROR("invalid plane\n");
> > > > @@ -1248,8 +1256,8 @@ void dpu_plane_flush(struct drm_plane *plane)
> > > > /* force 100% alpha */
> > > > _dpu_plane_color_fill(pdpu, pdpu->color_fill, 0xFF);
> > > > else {
> > > > - dpu_plane_flush_csc(pdpu, &pstate->pipe);
> > > > - dpu_plane_flush_csc(pdpu, &pstate->r_pipe);
> > > > + for (i = 0; i < PIPES_PER_STAGE; i++)
> > > > + dpu_plane_flush_csc(pdpu, &pstate->pipe[i]);
> > > > }
> > > >
> > > > /* flag h/w flush complete */
> > > > @@ -1349,20 +1357,16 @@ static void dpu_plane_sspp_atomic_update(struct drm_plane *plane)
> > > > struct dpu_plane *pdpu = to_dpu_plane(plane);
> > > > struct drm_plane_state *state = plane->state;
> > > > struct dpu_plane_state *pstate = to_dpu_plane_state(state);
> > > > - struct dpu_sw_pipe *pipe = &pstate->pipe;
> > > > - struct dpu_sw_pipe *r_pipe = &pstate->r_pipe;
> > > > struct drm_crtc *crtc = state->crtc;
> > > > struct drm_framebuffer *fb = state->fb;
> > > > bool is_rt_pipe;
> > > > const struct msm_format *fmt =
> > > > msm_framebuffer_format(fb);
> > > > - struct dpu_sw_pipe_cfg *pipe_cfg = &pstate->pipe_cfg;
> > > > - struct dpu_sw_pipe_cfg *r_pipe_cfg = &pstate->r_pipe_cfg;
> > > > struct dpu_kms *kms = _dpu_plane_get_kms(&pdpu->base);
> > > > struct msm_gem_address_space *aspace = kms->base.aspace;
> > > > struct dpu_hw_fmt_layout layout;
> > > > bool layout_valid = false;
> > > > - int ret;
> > > > + int ret, i;
> > > >
> > > > ret = dpu_format_populate_layout(aspace, fb, &layout);
> > > > if (ret)
> > > > @@ -1381,12 +1385,12 @@ static void dpu_plane_sspp_atomic_update(struct drm_plane *plane)
> > > > crtc->base.id, DRM_RECT_ARG(&state->dst),
> > > > &fmt->pixel_format, MSM_FORMAT_IS_UBWC(fmt));
> > > >
> > > > - dpu_plane_sspp_update_pipe(plane, pipe, pipe_cfg, fmt,
> > > > - drm_mode_vrefresh(&crtc->mode),
> > > > - layout_valid ? &layout : NULL);
> > > > -
> > > > - if (r_pipe->sspp) {
> > > > - dpu_plane_sspp_update_pipe(plane, r_pipe, r_pipe_cfg, fmt,
> > > > + /* move the assignment here, to ease handling to another pairs later */
> > > > + for (i = 0; i < PIPES_PER_STAGE; i++) {
> > > > + if (!pstate->pipe[i].sspp)
> > > > + continue;
> > > > + dpu_plane_sspp_update_pipe(plane, &pstate->pipe[i],
> > > > + &pstate->pipe_cfg[i], fmt,
> > > > drm_mode_vrefresh(&crtc->mode),
> > > > layout_valid ? &layout : NULL);
> > > > }
> > > > @@ -1394,15 +1398,17 @@ static void dpu_plane_sspp_atomic_update(struct drm_plane *plane)
> > > > if (pstate->needs_qos_remap)
> > > > pstate->needs_qos_remap = false;
> > > >
> > > > - pstate->plane_fetch_bw = _dpu_plane_calc_bw(pdpu->catalog, fmt,
> > > > - &crtc->mode, pipe_cfg);
> > > > -
> > > > - pstate->plane_clk = _dpu_plane_calc_clk(&crtc->mode, pipe_cfg);
> > > > -
> > > > - if (r_pipe->sspp) {
> > > > - pstate->plane_fetch_bw += _dpu_plane_calc_bw(pdpu->catalog, fmt, &crtc->mode, r_pipe_cfg);
> > > > + pstate->plane_fetch_bw = 0;
> > > > + pstate->plane_clk = 0;
> > > > + for (i = 0; i < PIPES_PER_STAGE; i++) {
> > > > + if (!pstate->pipe[i].sspp)
> > > > + continue;
> > > > + pstate->plane_fetch_bw += _dpu_plane_calc_bw(pdpu->catalog, fmt,
> > > > + &crtc->mode, &pstate->pipe_cfg[i]);
> > >
> > > Wrong indentation
> >
> > Could you help elaborate it? I assume it is a bandwidth audit.
>
> Indent to the opening bracket please.
>
> > >
> > > >
> > > > - pstate->plane_clk = max(pstate->plane_clk, _dpu_plane_calc_clk(&crtc->mode, r_pipe_cfg));
> > > > + pstate->plane_clk = max(pstate->plane_clk,
> > > > + _dpu_plane_calc_clk(&crtc->mode,
> > > > + &pstate->pipe_cfg[i]));
> > > > }
> > > > }
> > > >
> > > > @@ -1410,17 +1416,24 @@ static void _dpu_plane_atomic_disable(struct drm_plane *plane)
> > > > {
> > > > struct drm_plane_state *state = plane->state;
> > > > struct dpu_plane_state *pstate = to_dpu_plane_state(state);
> > > > - struct dpu_sw_pipe *r_pipe = &pstate->r_pipe;
> > > > + struct dpu_sw_pipe *pipe;
> > > > + int i;
> > > > +
> > > > + for (i = 0; i < PIPES_PER_STAGE; i += 1) {
> > > > + pipe = &pstate->pipe[i];
> > > > + if (!pipe->sspp)
> > > > + continue;
> > > >
> > > > - trace_dpu_plane_disable(DRMID(plane), false,
> > > > - pstate->pipe.multirect_mode);
> > > > + trace_dpu_plane_disable(DRMID(plane), false,
> > > > + pstate->pipe[i].multirect_mode);
> > > >
> > > > - if (r_pipe->sspp) {
> > > > - r_pipe->multirect_index = DPU_SSPP_RECT_SOLO;
> > > > - r_pipe->multirect_mode = DPU_SSPP_MULTIRECT_NONE;
> > > > + if (pipe->sspp && pipe->multirect_index == DPU_SSPP_RECT_1) {
> > >
> > > if (i > 1)
> >
> > Is there any case that pipe->multirect_index == DPU_SSPP_RECT_1 and i == 0 ?
>
> You are converting the code. Please don't change the logic. Original
> code had separate handling for r_pipe. After your conversion it should
> be if (i == 1) or if (i > 0), which means a typo in my review comment.
>
I see. You want to keep logic unchanged, with only handling the pipe in array.
Handling to multiple pipe pairs can be added later.

- Jun

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