[Intel-gfx] [PATCH 01/49] drm/i915/bdw: Macro to distinguish LRCs (Logical Ring Contexts)

[oscar.mateo at intel.com]

From: Ben Widawsky <benjamin.widawsky at intel.com>

GEN8 brings an expansion of the HW contexts: "Logical Ring Contexts".
These expanded contexts enable a number of new abilities, especially
"Execlists".

In dev_priv, lrc_enabled will reflect the state of whether or not we've
actually properly initialized these new contexts. This helps the
transition in the code but is a candidate for removal at some point.

The macro is defined to off until we have things in place to hope to
work.

Signed-off-by: Ben Widawsky <ben at bwidawsk.net>

v2: Rename "advanced contexts" to the more correct "logical ring
contexts"

Signed-off-by: Oscar Mateo <oscar.mateo at intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index ef7e0ff..53196d0 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1430,6 +1430,8 @@ typedef struct drm_i915_private {
 
 	uint32_t hw_context_size;
 	struct list_head context_list;
+	/* Logical Ring Contexts */
+	bool lrc_enabled;
 
 	u32 fdi_rx_config;
 
@@ -1822,6 +1824,7 @@ struct drm_i915_cmd_table {
 #define I915_NEED_GFX_HWS(dev)	(INTEL_INFO(dev)->need_gfx_hws)
 
 #define HAS_HW_CONTEXTS(dev)	(INTEL_INFO(dev)->gen >= 6)
+#define HAS_LOGICAL_RING_CONTEXTS(dev)	0
 #define HAS_ALIASING_PPGTT(dev)	(INTEL_INFO(dev)->gen >= 6 && !IS_VALLEYVIEW(dev))
 #define HAS_PPGTT(dev)		(INTEL_INFO(dev)->gen >= 7 && !IS_VALLEYVIEW(dev) \
 				 && !IS_BROADWELL(dev))
-- 
1.9.0