From bad5242a59aa8e31cf10749e2ac69b3c66ef7da0 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Mon, 20 Dec 2010 16:02:42 +1000 Subject: nouveau: fix up reloc_emit() to accept NULL target buffer The nvc0 gallium drivers passes NULL here to indicate to the memory manager that a buffer is being used, but without creating an actual reloc. Signed-off-by: Ben Skeggs --- nouveau/nouveau_reloc.c | 34 +++++++++++++++++++++++++--------- 1 file changed, 25 insertions(+), 9 deletions(-) (limited to 'nouveau') diff --git a/nouveau/nouveau_reloc.c b/nouveau/nouveau_reloc.c index 332dfa01..cd219db4 100644 --- a/nouveau/nouveau_reloc.c +++ b/nouveau/nouveau_reloc.c @@ -79,11 +79,7 @@ nouveau_reloc_emit(struct nouveau_channel *chan, struct nouveau_bo *reloc_bo, if (!(nvbo->flags & (NOUVEAU_BO_GART | NOUVEAU_BO_VRAM))) nvbo->flags |= (flags & (NOUVEAU_BO_GART | NOUVEAU_BO_VRAM)); - rpbbo = nouveau_bo_emit_buffer(chan, reloc_bo); - if (!rpbbo) - return -ENOMEM; - nouveau_bo(reloc_bo)->pending_refcnt++; - + /* add buffer to validation list */ pbbo = nouveau_bo_emit_buffer(chan, bo); if (!pbbo) { fprintf(stderr, "buffer emit fail :(\n"); @@ -91,10 +87,13 @@ nouveau_reloc_emit(struct nouveau_channel *chan, struct nouveau_bo *reloc_bo, } nouveau_bo(bo)->pending_refcnt++; - if (flags & NOUVEAU_BO_VRAM) - domains |= NOUVEAU_GEM_DOMAIN_VRAM; - if (flags & NOUVEAU_BO_GART) - domains |= NOUVEAU_GEM_DOMAIN_GART; + if (flags & (NOUVEAU_BO_VRAM | NOUVEAU_BO_GART)) { + if (flags & NOUVEAU_BO_VRAM) + domains |= NOUVEAU_GEM_DOMAIN_VRAM; + if (flags & NOUVEAU_BO_GART) + domains |= NOUVEAU_GEM_DOMAIN_GART; + } else + domains |= nvbo->domain; if (!(pbbo->valid_domains & domains)) { fprintf(stderr, "no valid domains remain!\n"); @@ -111,6 +110,23 @@ nouveau_reloc_emit(struct nouveau_channel *chan, struct nouveau_bo *reloc_bo, nvbo->write_marker = 1; } + /* nvc0 gallium driver uses reloc_emit() with NULL target buffer + * to inform bufmgr of a buffer's use - however, we need something + * to track, so create a reloc for now, and hope it never triggers + * (it shouldn't, constant virtual address..).. + */ + if (!reloc_bo) { + reloc_bo = nvpb->buffer[nvpb->current]; + reloc_offset = 0; + reloc_ptr = NULL; + } + + /* add reloc target bo to validation list, and create the reloc */ + rpbbo = nouveau_bo_emit_buffer(chan, reloc_bo); + if (!rpbbo) + return -ENOMEM; + nouveau_bo(reloc_bo)->pending_refcnt++; + r = nvpb->relocs + nvpb->nr_relocs++; r->reloc_bo_index = rpbbo - nvpb->buffers; r->reloc_bo_offset = reloc_offset; -- cgit v1.2.3