[PATCH i-g-t v2 01/18] lib/intel_aux_pgtable: Library to add support for RGB16161616_64B format

[Ville Syrjala]

From: Melanie Lobo <melanie.lobo at intel.com>

TGL+ supports RGB16161616_64B FP16 format which is a binary
floating-point computer number format that occupies 16 bits
in computer memory.

This was tested with kernel patch,
https://patchwork.freedesktop.org/series/124957/
https://lore.kernel.org/all/20231201091133.23508-1-melanie.lobo@intel.com/

[vsyrjala: s/0x1/0x10/ to make the format correct for TGL.
The original number was for DG2/MTL media compression, but
for those platforms bspec says:
 "Compression format from AUX page walk is ignored.
  Instead compression format from Surface State is used."
 so we can just always use the TGL numbers here.
]

Cc: Juha-Pekka Heikkila <juhapekka.heikkila at gmail.com>
cc: Bhanuprakash Modem <bhanuprakash.modem at intel.com>
cc: Swati Sharma <swati2.sharma at intel.com>
Signed-off-by: Melanie Lobo <melanie.lobo at intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 lib/intel_aux_pgtable.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/intel_aux_pgtable.c b/lib/intel_aux_pgtable.c
index 3cbb0e26f35c..8ff48641619e 100644
--- a/lib/intel_aux_pgtable.c
+++ b/lib/intel_aux_pgtable.c
@@ -22,6 +22,7 @@
 #define AUX_FORMAT_AYUV		0x09
 #define AUX_FORMAT_ARGB_8B	0x0A
 #define AUX_FORMAT_NV12_21	0x0F
+#define AUX_FORMAT_RGBA16_FLOAT	0x10
 
 struct pgtable_level_desc {
 	int idx_shift;
@@ -306,6 +307,10 @@ static uint64_t pgt_get_l1_flags(const struct intel_buf *buf, int surface_idx)
 			entry.e.format = AUX_FORMAT_ARGB_8B;
 			entry.e.depth = bpp_to_depth_val(32);
 			break;
+		case 64:
+			entry.e.format = AUX_FORMAT_RGBA16_FLOAT;
+			entry.e.depth = bpp_to_depth_val(64);
+			break;
 		default:
 			igt_assert(0);
 		}
-- 
2.44.2