Mesa (main): intel/fs: Implement load/store_scratch on XeHP

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Module: Mesa
Branch: main
Commit: 1e242785c3155e71fec2ffcc7a814392ef9c90fe
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=1e242785c3155e71fec2ffcc7a814392ef9c90fe

Author: Jason Ekstrand <jason at jlekstrand.net>
Date:   Tue Oct 20 17:47:17 2020 -0500

intel/fs: Implement load/store_scratch on XeHP

Reviewed-by: Jordan Justen <jordan.l.justen at intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11582>

---

 src/intel/compiler/brw_fs_nir.cpp | 45 +++++++++++++++++++++++++++++++++------
 1 file changed, 39 insertions(+), 6 deletions(-)

diff --git a/src/intel/compiler/brw_fs_nir.cpp b/src/intel/compiler/brw_fs_nir.cpp
index 35f881a66fa..64a714516ad 100644
--- a/src/intel/compiler/brw_fs_nir.cpp
+++ b/src/intel/compiler/brw_fs_nir.cpp
@@ -4900,7 +4900,13 @@ fs_visitor::nir_emit_intrinsic(const fs_builder &bld, nir_intrinsic_instr *instr
       const unsigned bit_size = nir_dest_bit_size(instr->dest);
       fs_reg srcs[SURFACE_LOGICAL_NUM_SRCS];
 
-      if (devinfo->ver >= 8) {
+      if (devinfo->verx10 >= 125) {
+         const fs_builder ubld = bld.exec_all().group(1, 0);
+         fs_reg handle = component(ubld.vgrf(BRW_REGISTER_TYPE_UD), 0);
+         ubld.AND(handle, retype(brw_vec1_grf(0, 5), BRW_REGISTER_TYPE_UD),
+                          brw_imm_ud(~0x3ffu));
+         srcs[SURFACE_LOGICAL_SRC_SURFACE_HANDLE] = handle;
+      } else if (devinfo->ver >= 8) {
          srcs[SURFACE_LOGICAL_SRC_SURFACE] =
             brw_imm_ud(GFX8_BTI_STATELESS_NON_COHERENT);
       } else {
@@ -4919,8 +4925,18 @@ fs_visitor::nir_emit_intrinsic(const fs_builder &bld, nir_intrinsic_instr *instr
       assert(nir_dest_num_components(instr->dest) == 1);
       assert(nir_dest_bit_size(instr->dest) <= 32);
       assert(nir_intrinsic_align(instr) > 0);
-      if (nir_dest_bit_size(instr->dest) >= 4 &&
-          nir_intrinsic_align(instr) >= 4) {
+      if (devinfo->verx10 >= 125) {
+         assert(nir_dest_bit_size(instr->dest) == 32 &&
+                nir_intrinsic_align(instr) >= 4);
+
+         srcs[SURFACE_LOGICAL_SRC_ADDRESS] =
+            swizzle_nir_scratch_addr(bld, nir_addr, false);
+         srcs[SURFACE_LOGICAL_SRC_IMM_ARG] = brw_imm_ud(1);
+
+         bld.emit(SHADER_OPCODE_UNTYPED_SURFACE_READ_LOGICAL,
+                  dest, srcs, SURFACE_LOGICAL_NUM_SRCS);
+      } else if (nir_dest_bit_size(instr->dest) >= 4 &&
+                 nir_intrinsic_align(instr) >= 4) {
          /* The offset for a DWORD scattered message is in dwords. */
          srcs[SURFACE_LOGICAL_SRC_ADDRESS] =
             swizzle_nir_scratch_addr(bld, nir_addr, true);
@@ -4946,7 +4962,13 @@ fs_visitor::nir_emit_intrinsic(const fs_builder &bld, nir_intrinsic_instr *instr
       const unsigned bit_size = nir_src_bit_size(instr->src[0]);
       fs_reg srcs[SURFACE_LOGICAL_NUM_SRCS];
 
-      if (devinfo->ver >= 8) {
+      if (devinfo->verx10 >= 125) {
+         const fs_builder ubld = bld.exec_all().group(1, 0);
+         fs_reg handle = component(ubld.vgrf(BRW_REGISTER_TYPE_UD), 0);
+         ubld.AND(handle, retype(brw_vec1_grf(0, 5), BRW_REGISTER_TYPE_UD),
+                          brw_imm_ud(~0x3ffu));
+         srcs[SURFACE_LOGICAL_SRC_SURFACE_HANDLE] = handle;
+      } else if (devinfo->ver >= 8) {
          srcs[SURFACE_LOGICAL_SRC_SURFACE] =
             brw_imm_ud(GFX8_BTI_STATELESS_NON_COHERENT);
       } else {
@@ -4972,8 +4994,19 @@ fs_visitor::nir_emit_intrinsic(const fs_builder &bld, nir_intrinsic_instr *instr
       assert(nir_src_bit_size(instr->src[0]) <= 32);
       assert(nir_intrinsic_write_mask(instr) == 1);
       assert(nir_intrinsic_align(instr) > 0);
-      if (nir_src_bit_size(instr->src[0]) == 32 &&
-          nir_intrinsic_align(instr) >= 4) {
+      if (devinfo->verx10 >= 125) {
+         assert(nir_src_bit_size(instr->src[0]) == 32 &&
+                nir_intrinsic_align(instr) >= 4);
+         srcs[SURFACE_LOGICAL_SRC_DATA] = data;
+
+         srcs[SURFACE_LOGICAL_SRC_ADDRESS] =
+            swizzle_nir_scratch_addr(bld, nir_addr, false);
+         srcs[SURFACE_LOGICAL_SRC_IMM_ARG] = brw_imm_ud(1);
+
+         bld.emit(SHADER_OPCODE_UNTYPED_SURFACE_WRITE_LOGICAL,
+                  dest, srcs, SURFACE_LOGICAL_NUM_SRCS);
+      } else if (nir_src_bit_size(instr->src[0]) == 32 &&
+                 nir_intrinsic_align(instr) >= 4) {
          srcs[SURFACE_LOGICAL_SRC_DATA] = data;
 
          /* The offset for a DWORD scattered message is in dwords. */