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Mon, 24 Feb 2020 04:09:42 -0500 (EST) From: Maxime Ripard To: Nicolas Saenz Julienne , Eric Anholt Subject: [PATCH 37/89] drm/vc4: plane: Improve LBM usage Date: Mon, 24 Feb 2020 10:06:39 +0100 Message-Id: <155fc1ae0b330e1bb9292340096b306dfd6b6c4b.1582533919.git-series.maxime@cerno.tech> X-Mailer: git-send-email 2.24.1 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200224_010945_562305_CE57852C X-CRM114-Status: GOOD ( 10.63 ) X-Spam-Score: -0.9 (/) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-0.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [64.147.123.17 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Tim Gover , Dave Stevenson , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, Phil Elwell , linux-arm-kernel@lists.infradead.org, Maxime Ripard Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Dave Stevenson LBM allocations were always taking the worst case sizing of max(src_width, dst_width) * 16. This is significantly over the required sizing, and stops us rendering multiple 4k images to the screen. Add some of the additional constraints to more accurately describe the LBM requirements. Signed-off-by: Dave Stevenson Signed-off-by: Maxime Ripard --- drivers/gpu/drm/vc4/vc4_plane.c | 31 ++++++++++++++++++++----------- 1 file changed, 20 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c index 0b8309247dec..26e96b15e9b4 100644 --- a/drivers/gpu/drm/vc4/vc4_plane.c +++ b/drivers/gpu/drm/vc4/vc4_plane.c @@ -142,9 +142,10 @@ static const struct hvs_format *vc4_get_hvs_format(u32 drm_format) return NULL; } -static enum vc4_scaling_mode vc4_get_scaling_mode(u32 src, u32 dst) +static enum vc4_scaling_mode vc4_get_scaling_mode(u32 src, u32 dst, + bool chroma_vrep) { - if (dst == src) + if (dst == src && !chroma_vrep) return VC4_SCALING_NONE; if (3 * dst >= 2 * src) return VC4_SCALING_PPF; @@ -369,9 +370,11 @@ static int vc4_plane_setup_clipping_and_scaling(struct drm_plane_state *state) return ret; vc4_state->x_scaling[0] = vc4_get_scaling_mode(vc4_state->src_w[0], - vc4_state->crtc_w); + vc4_state->crtc_w, + false); vc4_state->y_scaling[0] = vc4_get_scaling_mode(vc4_state->src_h[0], - vc4_state->crtc_h); + vc4_state->crtc_h, + false); vc4_state->is_unity = (vc4_state->x_scaling[0] == VC4_SCALING_NONE && vc4_state->y_scaling[0] == VC4_SCALING_NONE); @@ -384,10 +387,12 @@ static int vc4_plane_setup_clipping_and_scaling(struct drm_plane_state *state) vc4_state->x_scaling[1] = vc4_get_scaling_mode(vc4_state->src_w[1], - vc4_state->crtc_w); + vc4_state->crtc_w, + v_subsample == 2); vc4_state->y_scaling[1] = vc4_get_scaling_mode(vc4_state->src_h[1], - vc4_state->crtc_h); + vc4_state->crtc_h, + v_subsample == 2); /* YUV conversion requires that horizontal scaling be enabled * on the UV plane even if vc4_get_scaling_mode() returned @@ -437,10 +442,7 @@ static void vc4_write_ppf(struct vc4_plane_state *vc4_state, u32 src, u32 dst) static u32 vc4_lbm_size(struct drm_plane_state *state) { struct vc4_plane_state *vc4_state = to_vc4_plane_state(state); - /* This is the worst case number. One of the two sizes will - * be used depending on the scaling configuration. - */ - u32 pix_per_line = max(vc4_state->src_w[0], (u32)vc4_state->crtc_w); + u32 pix_per_line; u32 lbm; /* LBM is not needed when there's no vertical scaling. */ @@ -448,6 +450,11 @@ static u32 vc4_lbm_size(struct drm_plane_state *state) vc4_state->y_scaling[1] == VC4_SCALING_NONE) return 0; + if (vc4_state->x_scaling[0] == VC4_SCALING_TPZ) + pix_per_line = vc4_state->crtc_w; + else + pix_per_line = vc4_state->src_w[0]; + if (!vc4_state->is_yuv) { if (vc4_state->y_scaling[0] == VC4_SCALING_TPZ) lbm = pix_per_line * 8; @@ -583,7 +590,9 @@ static int vc4_plane_allocate_lbm(struct drm_plane_state *state) spin_lock_irqsave(&vc4->hvs->mm_lock, irqflags); ret = drm_mm_insert_node_generic(&vc4->hvs->lbm_mm, &vc4_state->lbm, - lbm_size, 32, 0, 0); + lbm_size, + vc4->hvs->hvs5 ? 64 : 32, + 0, 0); spin_unlock_irqrestore(&vc4->hvs->mm_lock, irqflags); if (ret)