[XeGPU] uArch definition (PR 1/N)

mlir/include/mlir/Dialect/XeGPU/Transforms/Passes.td

@@ -71,4 +71,21 @@ def XeGPUBlocking: Pass<"xegpu-blocking"> {
   ];
 }
 
+def XeGPUAttachTargetDevice : Pass<"xegpu-attach-target-device", "ModuleOp"> {
+  let summary = "Attach a dlti.target_system_spec entry with a named device";
+  let description = [{
+    This pass attaches a `dlti.target_system_spec` attribute to the module
+    with a device entry like `#dlti.dl_entry<"name", "<device>">`.
+  }];
+
+  let options = [
+    Option<"deviceName", "device-name", "std::string",
+           /*default=*/"\"pvc\"",
+           "Name of the target device to attach (e.g. pvc)">,
+  ];
+  let dependentDialects = [
+      "xegpu::XeGPUDialect", "mlir::DLTIDialect"
+  ];
+}
+
 #endif // MLIR_DIALECT_XEGPU_TRANSFORMS_PASSES_TD

mlir/include/mlir/Dialect/XeGPU/uArch/IntelGpuXe2.h

@@ -0,0 +1,228 @@
+//===--- uArch.h ---------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+/// \file
+/// PVC uArch definition.
+///
+//
+//===----------------------------------------------------------------------===//
+#ifndef MLIR_DIALECT_XEGPU_UTILS_INTEL_GPU_XE2_H
+#define MLIR_DIALECT_XEGPU_UTILS_INTEL_GPU_XE2_H
+
+#include "mlir/Dialect/XeGPU/uArch/uArch.h"
+#include "mlir/IR/BuiltinTypes.h"
+#include "mlir/IR/TypeUtilities.h"
+#include <map>
+#include <string>
+#include <vector>
+
+namespace mlir {
+namespace xegpu {
+namespace uArch {
+namespace Xe2Plus {
+struct XeCoreInfo {
+  uint32_t num_threads;
+  SharedMemory shared_memory;
+  uint32_t num_vector_units;
+  uint32_t num_matrix_units;
+
+  // Constructor
+  XeCoreInfo(uint32_t num_threads, const SharedMemory &shared_memory,
+             uint32_t num_vector_units, uint32_t num_matrix_units)
+      : num_threads(num_threads), shared_memory(shared_memory),
+        num_vector_units(num_vector_units), num_matrix_units(num_matrix_units) {
+  }
+};
+
+struct Xe2Plus : public uArch {
+  XeCoreInfo xe_core;
+  Xe2Plus(
+      const std::string &archName, const std::string &archDescription,
+      const XeCoreInfo &xeCore,
+      const std::vector<uArchHierarchyComponent> &hierarchy = {},
+      const std::map<std::string, RegisterFileInfo> &regInfo = {},
+      const std::vector<CacheInfo> &cacheInfo = {},
+      const std::map<std::string, std::shared_ptr<Instruction>> &instrs = {},
+      const std::vector<Restriction<> *> &restrs = {})
+      : uArch(archName, archDescription, hierarchy, regInfo, cacheInfo, instrs,
+              restrs),
+        xe_core(xeCore) {}
+};
+
+// struct to represent DPAS instruction
+struct DPASInstruction : public Instruction, public MatrixOpInterface {
+  // Range systolic_depth;
+  // Range repreat_count;
+  // Range execution_size;
+  // std::map<std::string, uint32_t> ops_per_channel;
+  // std::vector<std::vector<std::string>> supported_types;
+  // std::map<std::string, std::map<std::string, std::vector<std::string>>>
+  //     matrix_size;
+
+  // bool checkSupportedDPASTypes(mlir::Type dstType, mlir::Type src0Type,
+  //                              mlir::Type src1Type, mlir::Type src2Type);
+
+  DPASInstruction()
+      : Instruction("dpas",                     // name
+                    "Dot Product Accumulate",   // description
+                    "0xABCD",                   // opcode
+                    FunctionalUnit::Matrix,     // functional_unit
+                    InstructionType::SIMD,      // type
+                    InstructionScope::Subgroup, // scope
+                    UnitOfComputation::Matrix)  // unit_of_computation
+  {}
+
+  // Override all virtuals from MatrixOpInterface
+  virtual bool checkSupportedMMATypes(mlir::Type AType, mlir::Type BType,
+                                      mlir::Type CType,
+                                      mlir::Type DType) override;
+  virtual std::vector<uint32_t> getSupportedM(mlir::Type type) override;
+  virtual std::vector<uint32_t> getSupportedK(mlir::Type type) override;
+  virtual std::vector<uint32_t> getSupportedN(mlir::Type type) override;
+  virtual std::vector<std::pair<unsigned, unsigned>>
+  getSupportedMatrix(mlir::Type type, MatrixType matrixType) override;
+};
+
+struct LoadStore2DTileInfo : public RangeTile {
+  std::vector<uint32_t> array_len;
+};
+
+// struct to represent Load2D/Store2D/Prefetch instruction
+struct LoadStorePrefetch2DInstruction : public Instruction {
+  MemoryType memory_type;
+  MemoryAccessType memory_access_type;
+  //   std::vector<std::string> supported_types;
+  std::vector<uint32_t> supported_types_bitwidth;
+  std::map<std::string, uint32_t> alignment;
+  LoadStore2DTileInfo supported_tile_sizes;
+  uint32_t min_surface_pitch;
+
+  // Validate Array length restriction on a given tile
+  bool validateArrayLenRestriction(Tile tile, uint32_t array_len,
+                                   mlir::Type dataType) {
+
+    Restriction<Tile, uint32_t, mlir::Type> width_array_len_restriction(
+        tile, array_len, dataType,
+        [](Tile tile, uint32_t array_len, mlir::Type dataType) {
+          assert(tile.no_of_dims == 2);
+          return tile.dims[1] * array_len *
+                     (dataType.getIntOrFloatBitWidth() / 8) <=
+                 64;
+        });
+    return width_array_len_restriction.validate();
+  }
+
+  // Validate Surface Pitch restriction on a given tile
+  bool validateSurfacePitchRestriction(Tile tile,
+                                       uint32_t surfacePitch /*in bytes*/) {
+    Restriction<Tile, uint32_t> surface_pitch_restriction(
+        tile, surfacePitch, [](Tile tile, uint32_t surfacePitch) {
+          assert(tile.no_of_dims == 2);
+          return surfacePitch >= 64;
+        });
+    return surface_pitch_restriction.validate();
+  }
+};
+
+namespace PVCuArch {
+struct PVCuArch : public Xe2Plus {
+  // Maintaines ownership of the instructions owned by PVUarch
+  std::vector<std::shared_ptr<Instruction>> owned_instructions;
+  PVCuArch()
+      : Xe2Plus("pvc",                        // archName
+                "Ponte Vecchio Architecture", // archDescription
+                XeCoreInfo(8, SharedMemory(512 * 1024, 4), 8, 8), // xeCore
+                {/* register_file_info */}, // Optional: empty
+                {/* cache_info */},         // Optional: empty
+                {/* instructions */},       // Optional: empty
+                {/* restrictions */}        // Optional: empty
+        ) {
+    // Initialize uArchHierarchy
+    this->uArch_hierarchy.push_back(uArchHierarchyComponent("thread", 0));
+    this->uArch_hierarchy.push_back(uArchHierarchyComponent("XeCore", 8));
+    this->uArch_hierarchy.push_back(uArchHierarchyComponent("XeSlice", 16));
+    this->uArch_hierarchy.push_back(uArchHierarchyComponent("XeStack", 4));
+    this->uArch_hierarchy.push_back(uArchHierarchyComponent("gpu", 2));
+    // Intialize register file info
+    // GRF
+    this->register_file_info.emplace(
+        "GRF",
+        RegisterFileInfo(64 * 1024,          // size in bits
+                         {"small", "large"}, // GRF modes
+                         {128, 256},         // registers per thread per mode
+                         0,                  // number of banks
+                         0                   // bank size
+                         ));
+    // Initialize cache info
+    // L1 cache, XeCore level
+    this->cache_info.push_back(
+        CacheInfo(512 * 1024, 64, this->uArch_hierarchy[1]));
+    // L3 cache, XeStack level
+    this->cache_info.push_back(
+        CacheInfo(512 * 1024, 64, this->uArch_hierarchy[3]));
+
+    // Add the instructions
+    auto dpas = std::make_shared<DPASInstruction>();
+    instructions.emplace(dpas->name, dpas);
+    // instructions[dpas->name] = dpas.get();
+    owned_instructions.push_back(dpas);
+  }
+};
+} // namespace PVCuArch
+
+namespace BMGuArch {
+struct BMGuArch : public Xe2Plus {
+  // Maintaines ownership of the instructions owned by PVUarch
+  std::vector<std::shared_ptr<Instruction>> owned_instructions;
+  BMGuArch()
+      : Xe2Plus("bmg",                     // archName
+                "Battlemage Architecture", // archDescription
+                XeCoreInfo(8, SharedMemory(256 * 1024, 4), 8, 8), // xeCore
+                {/* register_file_info */}, // Optional: empty
+                {/* cache_info */},         // Optional: empty
+                {/* instructions */},       // Optional: empty
+                {/* restrictions */}        // Optional: empty
+        ) {
+    // Initialize uArchHierarchy
+    this->uArch_hierarchy.push_back(uArchHierarchyComponent("thread", 0));
+    this->uArch_hierarchy.push_back(uArchHierarchyComponent("XeCore", 8));
+    this->uArch_hierarchy.push_back(uArchHierarchyComponent("XeSlice", 4));
+    this->uArch_hierarchy.push_back(uArchHierarchyComponent("XeStack", 5));
+    this->uArch_hierarchy.push_back(uArchHierarchyComponent("gpu", 1));
+    // Intialize register file info
+    // GRF
+    this->register_file_info["GRF"] =
+        RegisterFileInfo(64 * 1024,          // size in bits
+                         {"small", "large"}, // GRF modes
+                         {128, 256},         // registers per thread per mode
+                         0,                  // number of banks
+                         0                   // bank size
+        );
+    // Initialize cache info
+    // L1 cache, XeCore level
+    this->cache_info.push_back(
+        CacheInfo(256 * 1024, 64, this->uArch_hierarchy[1]));
+    // L3 cache, XeStack level
+    this->cache_info.push_back(
+        CacheInfo(18 * 1024 * 1024, 256, this->uArch_hierarchy[3]));
+
+    // Add the instructions
+    auto dpas = std::make_shared<DPASInstruction>();
+    instructions.emplace(dpas->name, dpas);
+    // instructions[dpas->name] = dpas.get();
+    owned_instructions.push_back(dpas);
+  }
+};
+} // namespace BMGuArch
+
+} // namespace Xe2Plus
+} // namespace uArch
+} // namespace xegpu
+} // namespace mlir
+
+#endif // MLIR_DIALECT_XEGPU_UTILS_INTEL_GPU_XE2_H