From 150ac07b855b5c5f879bf6ce9ca421ccd1a6c938 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Michel=20D=C3=A4nzer?= Date: Wed, 25 Jun 2014 18:36:43 +0900 Subject: [PATCH] r600g/radeonsi: Prefer VRAM for CPU -> GPU streaming buffers MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Reviewed-by: Marek Olšák --- src/gallium/drivers/radeon/r600_buffer_common.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/src/gallium/drivers/radeon/r600_buffer_common.c b/src/gallium/drivers/radeon/r600_buffer_common.c index 154c33d7391..d747cbcb930 100644 --- a/src/gallium/drivers/radeon/r600_buffer_common.c +++ b/src/gallium/drivers/radeon/r600_buffer_common.c @@ -110,14 +110,21 @@ bool r600_init_resource(struct r600_common_screen *rscreen, enum radeon_bo_flag flags = 0; switch (res->b.b.usage) { - case PIPE_USAGE_DYNAMIC: - case PIPE_USAGE_STREAM: - flags = RADEON_FLAG_GTT_WC; - /* fall through */ case PIPE_USAGE_STAGING: /* Transfers are likely to occur more often with these resources. */ res->domains = RADEON_DOMAIN_GTT; break; + case PIPE_USAGE_STREAM: + case PIPE_USAGE_DYNAMIC: + /* Older kernels didn't always flush the HDP cache before + * CS execution + */ + if (rscreen->info.drm_minor < 40) { + res->domains = RADEON_DOMAIN_GTT; + flags = RADEON_FLAG_GTT_WC; + break; + } + /* fall through */ case PIPE_USAGE_DEFAULT: case PIPE_USAGE_IMMUTABLE: default: -- 2.30.2