[Intel-xe] [PATCH v2 01/15] drm/xe/xe2: Update render/compute context image sizes

[Lucas De Marchi]

From: Matt Roper <matthew.d.roper at intel.com>

The render and compute context are significantly smaller on Xe2 than on
previous platforms.

Registers:
 - Render:  3008 dwords -> 12032 bytes -> round to 3 pages
 - Compute: 1424 dwords ->  5696 bytes -> round to 2 pages

We also allocate one additional page for the HWSP, so the total
allocation sizes for render and compute are 4 and 3 pages respectively.

Bspec: 65182, 56578, 55793
Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
Reviewed-by: Matt Atwood <matthew.s.atwood at intel.com>
---
 drivers/gpu/drm/xe/xe_lrc.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_lrc.c b/drivers/gpu/drm/xe/xe_lrc.c
index 7a7fdcdadf37..7c15c55964a8 100644
--- a/drivers/gpu/drm/xe/xe_lrc.c
+++ b/drivers/gpu/drm/xe/xe_lrc.c
@@ -37,9 +37,16 @@ size_t xe_lrc_size(struct xe_device *xe, enum xe_engine_class class)
 {
 	switch (class) {
 	case XE_ENGINE_CLASS_RENDER:
+		if (GRAPHICS_VER(xe) >= 20)
+			return 4 * SZ_4K;
+		else
+			return 14 * SZ_4K;
 	case XE_ENGINE_CLASS_COMPUTE:
 		/* 14 pages since graphics_ver == 11 */
-		return 14 * SZ_4K;
+		if (GRAPHICS_VER(xe) >= 20)
+			return 3 * SZ_4K;
+		else
+			return 14 * SZ_4K;
 	default:
 		WARN(1, "Unknown engine class: %d", class);
 		fallthrough;
-- 
2.40.1