From fb40b449cd8b71748f0b2b1bb790fe263b033feb Mon Sep 17 00:00:00 2001
From: Francisco Jerez <currojerez@riseup.net>
Date: Wed, 18 Sep 2024 14:39:10 -0700
Subject: [PATCH] intel/brw: Define ptl_register_blocks() helper.

Since this calculation will be needed in many places to set up the
state of each shader stage.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32664>
---
 src/intel/compiler/brw_compiler.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/intel/compiler/brw_compiler.h b/src/intel/compiler/brw_compiler.h
index ce6c5f5fd5b..52fb1458232 100644
--- a/src/intel/compiler/brw_compiler.h
+++ b/src/intel/compiler/brw_compiler.h
@@ -569,6 +569,17 @@ struct brw_stage_prog_data {
    u_printf_info *printf_info;
 };
 
+/**
+ * Convert a number of GRF registers used (grf_used in prog_data) into
+ * a number of GRF register blocks supported by the hardware on PTL+.
+ */
+static inline unsigned
+ptl_register_blocks(unsigned grf_used)
+{
+   const unsigned n = DIV_ROUND_UP(grf_used, 32) - 1;
+   return (n < 6 ? n : 7);
+}
+
 static inline uint32_t *
 brw_stage_prog_data_add_params(struct brw_stage_prog_data *prog_data,
                                unsigned nr_new_params)