On 8/28/2024 11:59 AM, Dmitry Baryshkov wrote:
On Wed, 28 Aug 2024 at 21:27, Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx> wrote:On 6/26/2024 2:46 PM, Dmitry Baryshkov wrote:Split dpu_plane_atomic_check() function into two pieces: dpu_plane_atomic_check_nopipe() performing generic checks on the pstate, without touching the associated pipe, and dpu_plane_atomic_check_pipes(), which takes into account used pipes. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> --- drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 178 +++++++++++++++++++----------- 1 file changed, 112 insertions(+), 66 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c index 115c1bd77bdd..9b9fe28052ad 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c @@ -788,49 +788,22 @@ static int dpu_plane_atomic_check_pipe(struct dpu_plane *pdpu, #define MAX_UPSCALE_RATIO 20 #define MAX_DOWNSCALE_RATIO 4 -static int dpu_plane_atomic_check(struct drm_plane *plane, - struct drm_atomic_state *state) +static int dpu_plane_atomic_check_nopipe(struct drm_plane *plane, + struct drm_plane_state *new_plane_state, + const struct drm_crtc_state *crtc_state) { - struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, - plane); int ret = 0, min_scale, max_scale; struct dpu_plane *pdpu = to_dpu_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 *pipe = &pstate->pipe; - struct dpu_sw_pipe *r_pipe = &pstate->r_pipe; - const struct drm_crtc_state *crtc_state = NULL; - 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 drm_rect fb_rect = { 0 }; uint32_t max_linewidth; - unsigned int rotation; - uint32_t supported_rotations; - const struct dpu_sspp_cfg *pipe_hw_caps; - const struct dpu_sspp_sub_blks *sblk; - - if (new_plane_state->crtc) - crtc_state = drm_atomic_get_new_crtc_state(state, - new_plane_state->crtc); - - pipe->sspp = dpu_rm_get_sspp(&kms->rm, pdpu->pipe); - r_pipe->sspp = NULL; - if (!pipe->sspp) - return -EINVAL; - - pipe_hw_caps = pipe->sspp->cap; - sblk = pipe->sspp->cap->sblk; - - if (sblk->scaler_blk.len) { - min_scale = FRAC_16_16(1, MAX_UPSCALE_RATIO); - max_scale = MAX_DOWNSCALE_RATIO << 16; - } else { - min_scale = DRM_PLANE_NO_SCALING; - max_scale = DRM_PLANE_NO_SCALING; - } + min_scale = FRAC_16_16(1, MAX_UPSCALE_RATIO); + max_scale = MAX_DOWNSCALE_RATIO << 16; ret = drm_atomic_helper_check_plane_state(new_plane_state, crtc_state, min_scale, @@ -843,11 +816,6 @@ static int dpu_plane_atomic_check(struct drm_plane *plane, if (!new_plane_state->visible) return 0; - pipe->multirect_index = DPU_SSPP_RECT_SOLO; - pipe->multirect_mode = DPU_SSPP_MULTIRECT_NONE; - r_pipe->multirect_index = DPU_SSPP_RECT_SOLO; - r_pipe->multirect_mode = DPU_SSPP_MULTIRECT_NONE; - pstate->stage = DPU_STAGE_0 + pstate->base.normalized_zpos; if (pstate->stage >= pdpu->catalog->caps->max_mixer_blendstages) { DPU_ERROR("> %d plane stages assigned\n", @@ -871,8 +839,6 @@ static int dpu_plane_atomic_check(struct drm_plane *plane, return -E2BIG; } - fmt = msm_framebuffer_format(new_plane_state->fb); - max_linewidth = pdpu->catalog->caps->max_linewidth; drm_rect_rotate(&pipe_cfg->src_rect, @@ -881,6 +847,78 @@ static int dpu_plane_atomic_check(struct drm_plane *plane, if ((drm_rect_width(&pipe_cfg->src_rect) > max_linewidth) || _dpu_plane_calc_clk(&crtc_state->adjusted_mode, pipe_cfg) > max_mdp_clk_rate) { + if (drm_rect_width(&pipe_cfg->src_rect) > 2 * max_linewidth) { + DPU_DEBUG_PLANE(pdpu, "invalid src " DRM_RECT_FMT " line:%u\n", + DRM_RECT_ARG(&pipe_cfg->src_rect), max_linewidth); + return -E2BIG; + } + + *r_pipe_cfg = *pipe_cfg; + pipe_cfg->src_rect.x2 = (pipe_cfg->src_rect.x1 + pipe_cfg->src_rect.x2) >> 1; + pipe_cfg->dst_rect.x2 = (pipe_cfg->dst_rect.x1 + pipe_cfg->dst_rect.x2) >> 1; + r_pipe_cfg->src_rect.x1 = pipe_cfg->src_rect.x2; + r_pipe_cfg->dst_rect.x1 = pipe_cfg->dst_rect.x2; + } else { + memset(r_pipe_cfg, 0, sizeof(*r_pipe_cfg)); + } +This is the part I am not able to fully understand. Assignment of r_pipe_cfg is also pipe related so why should that move to dpu_plane_atomic_check_nopipe(). It should be part of dpu_plane_atomic_check_pipe().Because it happens before possible pipe / rectangle allocation. These values are further used to assign resources.
Are you referring to SSPP allocation which happens in dpu_plane_virtual_assign_resources() later on?
I see your point, but thats why originally I wanted to ask whether this should be called dpu_plane_atomic_check_nosspp() and dpu_plane_atomic_check_sspp() because pipe is kind of assigned either here or already assigned. Its the SSPP which is not.
+ drm_rect_rotate_inv(&pipe_cfg->src_rect, + new_plane_state->fb->width, new_plane_state->fb->height, + new_plane_state->rotation); + if (r_pipe_cfg->src_rect.x1 != 0) + drm_rect_rotate_inv(&r_pipe_cfg->src_rect, + new_plane_state->fb->width, new_plane_state->fb->height, + new_plane_state->rotation); + + pstate->needs_qos_remap = drm_atomic_crtc_needs_modeset(crtc_state); + + return 0; +} + +static int dpu_plane_atomic_check_pipes(struct drm_plane *plane, + struct drm_atomic_state *state, + const struct drm_crtc_state *crtc_state) +{ + struct drm_plane_state *new_plane_state = + 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; + uint32_t max_linewidth; + unsigned int rotation; + uint32_t supported_rotations; + const struct dpu_sspp_cfg *pipe_hw_caps; + const struct dpu_sspp_sub_blks *sblk; + int ret = 0; + + pipe_hw_caps = pipe->sspp->cap; + sblk = pipe->sspp->cap->sblk; + + /* + * We already have verified scaling against platform limitations. + * Now check if the SSPP supports scaling at all. + */ + if (!sblk->scaler_blk.len && + ((drm_rect_width(&new_plane_state->src) >> 16 != + drm_rect_width(&new_plane_state->dst)) || + (drm_rect_height(&new_plane_state->src) >> 16 != + drm_rect_height(&new_plane_state->dst)))) + return -ERANGE; +Should this part be retained under dpu_plane_atomic_check_nopipe()? This is also not pipe dependent.No, it uses sblk->scaler_blk, so it depends on the actual SSPP being used for this pipe.
Ack.
+ fmt = msm_framebuffer_format(new_plane_state->fb); + + max_linewidth = pdpu->catalog->caps->max_linewidth; + + ret = dpu_plane_atomic_check_pipe(pdpu, pipe, pipe_cfg, fmt, + &crtc_state->adjusted_mode); + if (ret) + return ret; + + if (drm_rect_width(&r_pipe_cfg->src_rect) != 0) { /* * In parallel multirect case only the half of the usual width * is supported for tiled formats. If we are here, we know that @@ -894,12 +932,6 @@ static int dpu_plane_atomic_check(struct drm_plane *plane, return -E2BIG; } - if (drm_rect_width(&pipe_cfg->src_rect) > 2 * max_linewidth) { - DPU_DEBUG_PLANE(pdpu, "invalid src " DRM_RECT_FMT " line:%u\n", - DRM_RECT_ARG(&pipe_cfg->src_rect), max_linewidth); - return -E2BIG; - } - if (drm_rect_width(&pipe_cfg->src_rect) != drm_rect_width(&pipe_cfg->dst_rect) || drm_rect_height(&pipe_cfg->src_rect) != drm_rect_height(&pipe_cfg->dst_rect) || (!test_bit(DPU_SSPP_SMART_DMA_V1, &pipe->sspp->cap->features) && @@ -921,26 +953,6 @@ static int dpu_plane_atomic_check(struct drm_plane *plane, r_pipe->multirect_index = DPU_SSPP_RECT_1; r_pipe->multirect_mode = DPU_SSPP_MULTIRECT_PARALLEL; - *r_pipe_cfg = *pipe_cfg; - pipe_cfg->src_rect.x2 = (pipe_cfg->src_rect.x1 + pipe_cfg->src_rect.x2) >> 1; - pipe_cfg->dst_rect.x2 = (pipe_cfg->dst_rect.x1 + pipe_cfg->dst_rect.x2) >> 1; - r_pipe_cfg->src_rect.x1 = pipe_cfg->src_rect.x2; - r_pipe_cfg->dst_rect.x1 = pipe_cfg->dst_rect.x2; - } - - drm_rect_rotate_inv(&pipe_cfg->src_rect, - new_plane_state->fb->width, new_plane_state->fb->height, - new_plane_state->rotation); - if (r_pipe->sspp) - drm_rect_rotate_inv(&r_pipe_cfg->src_rect, - new_plane_state->fb->width, new_plane_state->fb->height, - new_plane_state->rotation); - - ret = dpu_plane_atomic_check_pipe(pdpu, pipe, pipe_cfg, fmt, &crtc_state->adjusted_mode); - if (ret) - return ret; - - if (r_pipe->sspp) { ret = dpu_plane_atomic_check_pipe(pdpu, r_pipe, r_pipe_cfg, fmt, &crtc_state->adjusted_mode); if (ret) @@ -963,11 +975,45 @@ static int dpu_plane_atomic_check(struct drm_plane *plane, } pstate->rotation = rotation;The dpu_plane_check_inline_rotation() is also pipe independent. So even that goes to dpu_plane_atomic_check_nopipe()?It also depends on the sblk if I remember correctly. Also note that the next patch moves it to check_pipe().
Ack. I checked the next change. this part is fine.
- pstate->needs_qos_remap = drm_atomic_crtc_needs_modeset(crtc_state); return 0; }<snip>
