From ec3556d9297746b663b628fa9794d742359397c8 Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Thu, 13 Apr 2023 10:12:19 +0200 Subject: [PATCH 0594/1085] drm/vc4: hvs: Rework LBM alignment With the introduction of the support for BCM2712, the check of whether we're running on vc5 or not to compute the LBM alignment requirement doesn't work anymore. Moreover, the LBM size will need to be computed in words for the BCM2712, while we've had sizes in bytes so far. Aligning on either 64 or 32 words is thus fairly harmful on BCM2712, so let's just explicitly align the size when needed, and then call drm_mm_insert_node_generic() with an alignment of 1. Signed-off-by: Maxime Ripard --- drivers/gpu/drm/vc4/vc4_plane.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) --- a/drivers/gpu/drm/vc4/vc4_plane.c +++ b/drivers/gpu/drm/vc4/vc4_plane.c @@ -744,6 +744,11 @@ static int vc4_plane_allocate_lbm(struct if (!lbm_size) return 0; + if (vc4->gen == VC4_GEN_5) + lbm_size = ALIGN(lbm_size, 64); + else if (vc4->gen == VC4_GEN_4) + lbm_size = ALIGN(lbm_size, 32); + drm_dbg_driver(drm, "[PLANE:%d:%s] LBM Allocation Size: %u\n", plane->base.id, plane->name, lbm_size); @@ -759,8 +764,7 @@ static int vc4_plane_allocate_lbm(struct spin_lock_irqsave(&vc4->hvs->mm_lock, irqflags); ret = drm_mm_insert_node_generic(&vc4->hvs->lbm_mm, &vc4_state->lbm, - lbm_size, - vc4->gen == VC4_GEN_5 ? 64 : 32, + lbm_size, 1, 0, 0); spin_unlock_irqrestore(&vc4->hvs->mm_lock, irqflags);