[PATCH i-g-t v6 3/9] lib/intel_bufops: Start supporting compression on Xe2+

["Zbigniew Kempczyński" <zbigniew.kempczynski@intel.com>]

Xe2+ uses unified compression where PAT index determines using
compressed pages so lets add support of that to intel-buf. It is
necessary to run render-copy with compression on those platforms.

Signed-off-by: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
---
 lib/intel_bufops.c | 31 +++++++++++++++++++++++++++----
 1 file changed, 27 insertions(+), 4 deletions(-)

diff --git a/lib/intel_bufops.c b/lib/intel_bufops.c
index 7118272e5f..52a5f322ea 100644
--- a/lib/intel_bufops.c
+++ b/lib/intel_bufops.c
@@ -934,8 +934,14 @@ static void __intel_buf_init(struct buf_ops *bops,
 			if (__gem_create_in_memory_regions(bops->fd, &buf->handle, &bo_size, region))
 				igt_assert_eq(__gem_create(bops->fd, &bo_size, &buf->handle), 0);
 		} else {
+			uint16_t cpu_caching = __xe_default_cpu_caching(bops->fd, region, 0);
+
+			if (AT_LEAST_GEN(bops->devid, 20) && compression)
+				cpu_caching = DRM_XE_GEM_CPU_CACHING_WC;
+
 			bo_size = ALIGN(bo_size, xe_get_default_alignment(bops->fd));
-			buf->handle = xe_bo_create(bops->fd, 0, bo_size, region, 0);
+			buf->handle = xe_bo_create_caching(bops->fd, 0, bo_size, region, 0,
+							   cpu_caching);
 		}
 	}
 
@@ -970,11 +976,16 @@ void intel_buf_init(struct buf_ops *bops,
 		    uint32_t tiling, uint32_t compression)
 {
 	uint64_t region;
+	uint8_t pat_index = DEFAULT_PAT_INDEX;
+
+	if (compression && AT_LEAST_GEN(bops->devid, 20))
+		pat_index = intel_get_pat_idx_uc_comp(bops->fd);
 
 	region = bops->driver == INTEL_DRIVER_I915 ? I915_SYSTEM_MEMORY :
 						     system_memory(bops->fd);
 	__intel_buf_init(bops, 0, buf, width, height, bpp, alignment,
-			 tiling, compression, 0, 0, region, DEFAULT_PAT_INDEX,
+			 tiling, compression, 0, 0, region,
+			 pat_index,
 			 DEFAULT_MOCS_INDEX);
 
 	intel_buf_set_ownership(buf, true);
@@ -991,8 +1002,14 @@ void intel_buf_init_in_region(struct buf_ops *bops,
 			      uint32_t tiling, uint32_t compression,
 			      uint64_t region)
 {
+	uint8_t pat_index = DEFAULT_PAT_INDEX;
+
+	if (compression && AT_LEAST_GEN(bops->devid, 20))
+		pat_index = intel_get_pat_idx_uc_comp(bops->fd);
+
 	__intel_buf_init(bops, 0, buf, width, height, bpp, alignment,
-			 tiling, compression, 0, 0, region, DEFAULT_PAT_INDEX,
+			 tiling, compression, 0, 0, region,
+			 pat_index,
 			 DEFAULT_MOCS_INDEX);
 
 	intel_buf_set_ownership(buf, true);
@@ -1053,10 +1070,16 @@ void intel_buf_init_using_handle_and_size(struct buf_ops *bops,
 					  uint32_t req_tiling, uint32_t compression,
 					  uint64_t size)
 {
+	uint8_t pat_index = DEFAULT_PAT_INDEX;
+
 	igt_assert(handle);
 	igt_assert(size);
+
+	if (compression && AT_LEAST_GEN(bops->devid, 20))
+		pat_index = intel_get_pat_idx_uc_comp(bops->fd);
+
 	__intel_buf_init(bops, handle, buf, width, height, bpp, alignment,
-			 req_tiling, compression, size, 0, -1, DEFAULT_PAT_INDEX,
+			 req_tiling, compression, size, 0, -1, pat_index,
 			 DEFAULT_MOCS_INDEX);
 }
 
-- 
2.34.1