[Mesa-dev] [PATCH] gallium/radeon: add a flag that forces VRAM placement for everything

[Marek Olšák]

From: Marek Olšák <marek.olsak at amd.com>

---
 src/gallium/drivers/radeon/r600_buffer_common.c | 5 +++++
 src/gallium/drivers/radeon/r600_pipe_common.c   | 1 +
 src/gallium/drivers/radeon/r600_pipe_common.h   | 1 +
 3 files changed, 7 insertions(+)

diff --git a/src/gallium/drivers/radeon/r600_buffer_common.c b/src/gallium/drivers/radeon/r600_buffer_common.c
index 484f5c8..21fe498 100644
--- a/src/gallium/drivers/radeon/r600_buffer_common.c
+++ b/src/gallium/drivers/radeon/r600_buffer_common.c
@@ -138,6 +138,11 @@ bool r600_init_resource(struct r600_common_screen *rscreen,
 		break;
 	}
 
+	if (rscreen->debug_flags & DBG_FORCE_VRAM) {
+		res->domains = RADEON_DOMAIN_VRAM;
+		flags |= RADEON_FLAG_GTT_WC;
+	}
+
 	if (res->b.b.target == PIPE_BUFFER &&
 	    res->b.b.flags & (PIPE_RESOURCE_FLAG_MAP_PERSISTENT |
 			      PIPE_RESOURCE_FLAG_MAP_COHERENT)) {
diff --git a/src/gallium/drivers/radeon/r600_pipe_common.c b/src/gallium/drivers/radeon/r600_pipe_common.c
index 0ab4a60..884b6a0 100644
--- a/src/gallium/drivers/radeon/r600_pipe_common.c
+++ b/src/gallium/drivers/radeon/r600_pipe_common.c
@@ -376,6 +376,7 @@ static const struct debug_named_value common_debug_options[] = {
 	{ "nodcc", DBG_NO_DCC, "Disable DCC." },
 	{ "nodccclear", DBG_NO_DCC_CLEAR, "Disable DCC fast clear." },
 	{ "norbplus", DBG_NO_RB_PLUS, "Disable RB+ on Stoney." },
+	{ "forcevram", DBG_FORCE_VRAM, "Use VRAM for all allocations." },
 
 	DEBUG_NAMED_VALUE_END /* must be last */
 };
diff --git a/src/gallium/drivers/radeon/r600_pipe_common.h b/src/gallium/drivers/radeon/r600_pipe_common.h
index c3933b1d..6ee7675 100644
--- a/src/gallium/drivers/radeon/r600_pipe_common.h
+++ b/src/gallium/drivers/radeon/r600_pipe_common.h
@@ -87,6 +87,7 @@
 #define DBG_NO_DCC		(1llu << 43)
 #define DBG_NO_DCC_CLEAR	(1llu << 44)
 #define DBG_NO_RB_PLUS		(1llu << 45)
+#define DBG_FORCE_VRAM		(1llu << 46)
 
 #define R600_MAP_BUFFER_ALIGNMENT 64
 
-- 
2.1.4