[Intel-gfx] [PATCH 21/67] drm/i915/cnl: Update the context size

[Rodrigo Vivi]

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

The docs are not yet correct, so I cannot provide a reference to it. In the
current docs, the size is actually smaller than SKL. This seems unlikely given
that in another part of the docs there are clearly more engines stored within
the context image.

!UPSTREAM: I got this number from the Windows driver, but we should add the right
reference to the docs when we have it..

v2: (Rodrigo) Fixup the missing break identified by Tvrtko.

Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Signed-off-by: Ben Widawsky <benjamin.widawsky at intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
---
 drivers/gpu/drm/i915/intel_lrc.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 23e2bed..058d5f2 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -138,6 +138,7 @@
 #include "i915_drv.h"
 #include "intel_mocs.h"
 
+#define GEN10_LR_CONTEXT_RENDER_SIZE ((1 + 33) * PAGE_SIZE)
 #define GEN9_LR_CONTEXT_RENDER_SIZE (22 * PAGE_SIZE)
 #define GEN8_LR_CONTEXT_RENDER_SIZE (20 * PAGE_SIZE)
 #define GEN8_LR_CONTEXT_OTHER_SIZE (2 * PAGE_SIZE)
@@ -1930,10 +1931,19 @@ uint32_t intel_lr_context_size(struct intel_engine_cs *engine)
 
 	switch (engine->id) {
 	case RCS:
-		if (INTEL_GEN(engine->i915) >= 9)
+		switch (INTEL_GEN(engine->i915)) {
+		default:
+			DRM_ERROR("Unknown context size for GEN\n");
+		case 10:
+			ret = GEN10_LR_CONTEXT_RENDER_SIZE;
+			break;
+		case 9:
 			ret = GEN9_LR_CONTEXT_RENDER_SIZE;
-		else
+			break;
+		case 8:
 			ret = GEN8_LR_CONTEXT_RENDER_SIZE;
+			break;
+		}
 		break;
 	case VCS:
 	case BCS:
-- 
1.9.1