From 47d11990b2ca3eb666b8ac81fee7f7eb5019eba1 Mon Sep 17 00:00:00 2001 From: Ilia Mirkin Date: Mon, 5 Oct 2015 15:19:05 -0400 Subject: [PATCH] nouveau: make sure there's always room to emit a fence I started seeing a lot of situations on nv30 where fence emission wouldn't fit into the previous buffer (causing assertions). This ensures that whenever checking for space, we always leave a bit of extra room for the fence emission commands. Adjusts the nv30 and nvc0 fence emission logic to bypass the space checking as well. Signed-off-by: Ilia Mirkin Cc: mesa-stable@lists.freedesktop.org Reviewed-by: Samuel Pitoiset --- src/gallium/drivers/nouveau/nouveau_winsys.h | 2 ++ src/gallium/drivers/nouveau/nv30/nv30_screen.c | 4 +++- src/gallium/drivers/nouveau/nv50/nv50_screen.c | 1 + src/gallium/drivers/nouveau/nvc0/nvc0_screen.c | 3 ++- 4 files changed, 8 insertions(+), 2 deletions(-) diff --git a/src/gallium/drivers/nouveau/nouveau_winsys.h b/src/gallium/drivers/nouveau/nouveau_winsys.h index 389a229eb78..a44fd3efcf7 100644 --- a/src/gallium/drivers/nouveau/nouveau_winsys.h +++ b/src/gallium/drivers/nouveau/nouveau_winsys.h @@ -24,6 +24,8 @@ PUSH_AVAIL(struct nouveau_pushbuf *push) static inline bool PUSH_SPACE(struct nouveau_pushbuf *push, uint32_t size) { + /* Provide a buffer so that fences always have room to be emitted */ + size += 8; if (PUSH_AVAIL(push) < size) return nouveau_pushbuf_space(push, size, 0, 0) == 0; return true; diff --git a/src/gallium/drivers/nouveau/nv30/nv30_screen.c b/src/gallium/drivers/nouveau/nv30/nv30_screen.c index 39267b354e3..335c163b661 100644 --- a/src/gallium/drivers/nouveau/nv30/nv30_screen.c +++ b/src/gallium/drivers/nouveau/nv30/nv30_screen.c @@ -347,7 +347,9 @@ nv30_screen_fence_emit(struct pipe_screen *pscreen, uint32_t *sequence) *sequence = ++screen->base.fence.sequence; - BEGIN_NV04(push, NV30_3D(FENCE_OFFSET), 2); + assert(PUSH_AVAIL(push) >= 3); + PUSH_DATA (push, NV30_3D_FENCE_OFFSET | + (2 /* size */ << 18) | (7 /* subchan */ << 13)); PUSH_DATA (push, 0); PUSH_DATA (push, *sequence); } diff --git a/src/gallium/drivers/nouveau/nv50/nv50_screen.c b/src/gallium/drivers/nouveau/nv50/nv50_screen.c index 6012ff6fcb7..812b246ea0e 100644 --- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c +++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c @@ -388,6 +388,7 @@ nv50_screen_fence_emit(struct pipe_screen *pscreen, u32 *sequence) /* we need to do it after possible flush in MARK_RING */ *sequence = ++screen->base.fence.sequence; + assert(PUSH_AVAIL(push) >= 5); PUSH_DATA (push, NV50_FIFO_PKHDR(NV50_3D(QUERY_ADDRESS_HIGH), 4)); PUSH_DATAh(push, screen->fence.bo->offset); PUSH_DATA (push, screen->fence.bo->offset); diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c index 32da76c88f6..afd91e6feee 100644 --- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c +++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c @@ -537,7 +537,8 @@ nvc0_screen_fence_emit(struct pipe_screen *pscreen, u32 *sequence) /* we need to do it after possible flush in MARK_RING */ *sequence = ++screen->base.fence.sequence; - BEGIN_NVC0(push, NVC0_3D(QUERY_ADDRESS_HIGH), 4); + assert(PUSH_AVAIL(push) >= 5); + PUSH_DATA (push, NVC0_FIFO_PKHDR_SQ(NVC0_3D(QUERY_ADDRESS_HIGH), 4)); PUSH_DATAh(push, screen->fence.bo->offset); PUSH_DATA (push, screen->fence.bo->offset); PUSH_DATA (push, *sequence); -- 2.30.2