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Sun, 15 Dec 2024 04:40:27 -0800 (PST) Received: from umbar.lan ([192.130.178.90]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-54120c13be2sm491481e87.195.2024.12.15.04.40.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 15 Dec 2024 04:40:26 -0800 (PST) From: Dmitry Baryshkov Date: Sun, 15 Dec 2024 14:40:17 +0200 Subject: [PATCH v8 2/3] drm/msm/dpu: allow using two SSPP blocks for a single plane Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241215-dpu-virtual-wide-v8-2-65221f213ce1@linaro.org> References: <20241215-dpu-virtual-wide-v8-0-65221f213ce1@linaro.org> In-Reply-To: <20241215-dpu-virtual-wide-v8-0-65221f213ce1@linaro.org> To: Rob Clark , Abhinav Kumar , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=10016; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=tnabCVU1SaNGNfJfuPGtjX+5svo205A46mZ25LOgd7c=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBnXs4zgw0g1NMuBXHYSn79U0Pb6MCr7KeRUAq19 sFxzofeqIaJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZ17OMwAKCRCLPIo+Aiko 1V72B/9SRkn6NQGBX5zLK1GMEqnx7DjFvFPoNmm290cRH3MaEvHQGhy/cwhii9zXrTp9cxoGZaS wPrS4M1nEyKCuxAAM+LhIcTwyCQ2MTt4iJGEKaNtF8MOt0K0MemZS7fgt8TGPCSvllhylYTXkqq iHxRbvN+tAAaD2WLymXbjV1VGrAyUH2zseRWmRmvXoMHec3l8kQEVX0B/VEqIY6SYgnlhiyWvUt RO2m+hAL3lk75f0cjHLnDQEmGEAupx2zkf1Tm/F1QQpe1aRfHZU97RRvwf8M5UepxuU7TbljLZd LjCfUJOARySPGUM6YCi2NiUCvioWuS855gCtpAEjiSCvAahK X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A Virtual wide planes give high amount of flexibility, but it is not always enough: In parallel multirect case only the half of the usual width is supported for tiled formats. Thus the whole width of two tiled multirect rectangles can not be greater than max_linewidth, which is not enough for some platforms/compositors. Another example is as simple as wide YUV plane. YUV planes can not use multirect, so currently they are limited to max_linewidth too. Now that the planes are fully virtualized, add support for allocating two SSPP blocks to drive a single DRM plane. This fixes both mentioned cases and allows all planes to go up to 2*max_linewidth (at the cost of making some of the planes unavailable to the user). Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 144 ++++++++++++++++++++---------- 1 file changed, 98 insertions(+), 46 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c index 309a8cdaafcf3dacd1c7ba4e0cddb7f3f56423c0..098abc2c0003cde90ce6219c97ee18fa055a92a5 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c @@ -20,7 +20,6 @@ #include "msm_drv.h" #include "msm_mdss.h" #include "dpu_kms.h" -#include "dpu_formats.h" #include "dpu_hw_sspp.h" #include "dpu_hw_util.h" #include "dpu_trace.h" @@ -888,6 +887,32 @@ static int dpu_plane_atomic_check_nosspp(struct drm_plane *plane, return 0; } +static int dpu_plane_is_multirect_parallel_capable(struct dpu_hw_sspp *sspp, + struct dpu_sw_pipe_cfg *pipe_cfg, + const struct msm_format *fmt, + uint32_t max_linewidth) +{ + 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)) + return false; + + if (pipe_cfg->rotation & DRM_MODE_ROTATE_90) + return false; + + if (MSM_FORMAT_IS_YUV(fmt)) + return false; + + if (MSM_FORMAT_IS_UBWC(fmt) && + drm_rect_width(&pipe_cfg->src_rect) > max_linewidth / 2) + return false; + + if (!test_bit(DPU_SSPP_SMART_DMA_V1, &sspp->cap->features) && + !test_bit(DPU_SSPP_SMART_DMA_V2, &sspp->cap->features)) + return false; + + return true; +} + static int dpu_plane_atomic_check_sspp(struct drm_plane *plane, struct drm_atomic_state *state, const struct drm_crtc_state *crtc_state) @@ -901,7 +926,6 @@ static int dpu_plane_atomic_check_sspp(struct drm_plane *plane, 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; uint32_t supported_rotations; const struct dpu_sspp_cfg *pipe_hw_caps; const struct dpu_sspp_sub_blks *sblk; @@ -923,8 +947,6 @@ static int dpu_plane_atomic_check_sspp(struct drm_plane *plane, fmt = msm_framebuffer_format(new_plane_state->fb); - max_linewidth = pdpu->catalog->caps->max_linewidth; - supported_rotations = DRM_MODE_REFLECT_MASK | DRM_MODE_ROTATE_0; if (pipe_hw_caps->features & BIT(DPU_SSPP_INLINE_ROTATION)) @@ -940,48 +962,43 @@ static int dpu_plane_atomic_check_sspp(struct drm_plane *plane, 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 - * full width is more than max_linewidth, thus each rect is - * wider than allowed. - */ - if (MSM_FORMAT_IS_UBWC(fmt) && - drm_rect_width(&pipe_cfg->src_rect) > max_linewidth) { - DPU_DEBUG_PLANE(pdpu, "invalid src " DRM_RECT_FMT " line:%u, tiled format\n", - DRM_RECT_ARG(&pipe_cfg->src_rect), max_linewidth); - return -E2BIG; - } + ret = dpu_plane_atomic_check_pipe(pdpu, r_pipe, r_pipe_cfg, fmt, + &crtc_state->adjusted_mode); + if (ret) + return ret; + } - 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) && - !test_bit(DPU_SSPP_SMART_DMA_V2, &pipe->sspp->cap->features)) || - pipe_cfg->rotation & DRM_MODE_ROTATE_90 || - MSM_FORMAT_IS_YUV(fmt)) { - DPU_DEBUG_PLANE(pdpu, "invalid src " DRM_RECT_FMT " line:%u, can't use split source\n", - DRM_RECT_ARG(&pipe_cfg->src_rect), max_linewidth); - return -E2BIG; - } + return 0; +} + +static bool dpu_plane_try_multirect_parallel(struct dpu_sw_pipe *pipe, struct dpu_sw_pipe_cfg *pipe_cfg, + struct dpu_sw_pipe *r_pipe, struct dpu_sw_pipe_cfg *r_pipe_cfg, + struct dpu_hw_sspp *sspp, const struct msm_format *fmt, + uint32_t max_linewidth) +{ + r_pipe->sspp = NULL; + + 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; + + if (drm_rect_width(&r_pipe_cfg->src_rect) != 0) { + if (!dpu_plane_is_multirect_parallel_capable(pipe->sspp, pipe_cfg, fmt, max_linewidth) || + !dpu_plane_is_multirect_parallel_capable(pipe->sspp, r_pipe_cfg, fmt, max_linewidth)) + return false; + + r_pipe->sspp = pipe->sspp; - /* - * Use multirect for wide plane. We do not support dynamic - * assignment of SSPPs, so we know the configuration. - */ pipe->multirect_index = DPU_SSPP_RECT_0; pipe->multirect_mode = DPU_SSPP_MULTIRECT_PARALLEL; - r_pipe->sspp = pipe->sspp; r_pipe->multirect_index = DPU_SSPP_RECT_1; r_pipe->multirect_mode = DPU_SSPP_MULTIRECT_PARALLEL; - - ret = dpu_plane_atomic_check_pipe(pdpu, r_pipe, r_pipe_cfg, fmt, - &crtc_state->adjusted_mode); - if (ret) - return ret; } - return 0; + return true; } static int dpu_plane_atomic_check(struct drm_plane *plane, @@ -995,16 +1012,16 @@ static int dpu_plane_atomic_check(struct drm_plane *plane, 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; const struct drm_crtc_state *crtc_state = NULL; + uint32_t max_linewidth = dpu_kms->catalog->caps->max_linewidth; if (new_plane_state->crtc) crtc_state = drm_atomic_get_new_crtc_state(state, new_plane_state->crtc); - if (pdpu->pipe != SSPP_NONE) { - pipe->sspp = dpu_rm_get_sspp(&dpu_kms->rm, pdpu->pipe); - r_pipe->sspp = NULL; - } + pipe->sspp = dpu_rm_get_sspp(&dpu_kms->rm, pdpu->pipe); if (!pipe->sspp) return -EINVAL; @@ -1016,10 +1033,17 @@ 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; + if (!dpu_plane_try_multirect_parallel(pipe, pipe_cfg, r_pipe, r_pipe_cfg, + pipe->sspp, + msm_framebuffer_format(new_plane_state->fb), + max_linewidth)) { + DPU_DEBUG_PLANE(pdpu, "invalid " DRM_RECT_FMT " /" DRM_RECT_FMT + " max_line:%u, can't use split source\n", + DRM_RECT_ARG(&pipe_cfg->src_rect), + DRM_RECT_ARG(&r_pipe_cfg->src_rect), + max_linewidth); + return -E2BIG; + } return dpu_plane_atomic_check_sspp(plane, state, crtc_state); } @@ -1054,8 +1078,16 @@ static int dpu_plane_virtual_atomic_check(struct drm_plane *plane, return 0; } - /* force resource reallocation if the format of FB has changed */ + /* + * Force resource reallocation if the format of FB or src/dst have + * changed. We might need to allocate different SSPP or SSPPs for this + * plane than the one used previously. + */ if (!old_plane_state || !old_plane_state->fb || + old_plane_state->src_w != plane_state->src_w || + old_plane_state->src_h != plane_state->src_h || + old_plane_state->src_w != plane_state->src_w || + old_plane_state->crtc_h != plane_state->crtc_h || msm_framebuffer_format(old_plane_state->fb) != msm_framebuffer_format(plane_state->fb)) crtc_state->planes_changed = true; @@ -1075,6 +1107,8 @@ static int dpu_plane_virtual_assign_resources(struct drm_crtc *crtc, struct dpu_plane_state *pstate; struct dpu_sw_pipe *pipe; struct dpu_sw_pipe *r_pipe; + struct dpu_sw_pipe_cfg *pipe_cfg; + struct dpu_sw_pipe_cfg *r_pipe_cfg; const struct msm_format *fmt; if (plane_state->crtc) @@ -1084,6 +1118,8 @@ static int dpu_plane_virtual_assign_resources(struct drm_crtc *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; @@ -1102,6 +1138,22 @@ static int dpu_plane_virtual_assign_resources(struct drm_crtc *crtc, if (!pipe->sspp) return -ENODEV; + if (!dpu_plane_try_multirect_parallel(pipe, pipe_cfg, r_pipe, r_pipe_cfg, + pipe->sspp, + msm_framebuffer_format(plane_state->fb), + dpu_kms->catalog->caps->max_linewidth)) { + /* multirect is not possible, use two SSPP blocks */ + r_pipe->sspp = dpu_rm_reserve_sspp(&dpu_kms->rm, global_state, crtc, &reqs); + if (!r_pipe->sspp) + return -ENODEV; + + 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; + } + return dpu_plane_atomic_check_sspp(plane, state, crtc_state); }