nouveau/mme: Add a generic simulator function

This one takes a devinfo and decodes and simulates the shader with
whichever sim is appropriate.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30703>

src/nouveau/mme/meson.build

@@ -8,6 +8,7 @@ libnouveau_mme_files = files(
   'mme_fermi_builder.c',
   'mme_fermi_sim.c',
   'mme_sim.h',
+  'mme_sim.c',
   'mme_tu104.c',
   'mme_tu104.h',
   'mme_tu104_builder.c',

src/nouveau/mme/mme_sim.c

@@ -0,0 +1,40 @@
+/*
+ * Copyright © 2022 Mary Guillemard
+ * SPDX-License-Identifier: MIT
+ */
+#include "mme_sim.h"
+
+#include "mme_fermi.h"
+#include "mme_fermi_sim.h"
+#include "mme_tu104.h"
+#include "mme_tu104_sim.h"
+
+#define MME_CLS_FERMI 0x9000
+#define MME_CLS_TURING 0xc500
+
+void
+mme_sim_core(const struct nv_device_info *devinfo,
+             size_t macro_size, const void *macro,
+             const struct mme_sim_state_ops *state_ops,
+             void *state_handler)
+{
+   if (devinfo->cls_eng3d >= MME_CLS_TURING) {
+      assert(macro_size % 12 == 0);
+      uint32_t inst_count = macro_size / 12;
+      struct mme_tu104_inst *insts =
+         malloc(inst_count * sizeof(struct mme_tu104_inst));
+      mme_tu104_decode(insts, macro, inst_count);
+      mme_tu104_sim_core(inst_count, insts, state_ops, state_handler);
+      free(insts);
+   } else if (devinfo->cls_eng3d >= MME_CLS_FERMI) {
+      assert(macro_size % 4 == 0);
+      uint32_t inst_count = macro_size / 4;
+      struct mme_fermi_inst *insts =
+         malloc(inst_count * sizeof(struct mme_fermi_inst));
+      mme_fermi_decode(insts, macro, inst_count);
+      mme_fermi_sim_core(inst_count, insts, state_ops, state_handler);
+      free(insts);
+   } else {
+      unreachable("Unsupported GPU class");
+   }
+}

src/nouveau/mme/mme_sim.h

@@ -19,6 +19,11 @@ struct mme_sim_state_ops {
    uint32_t *(*map_dram)(void *handler, uint32_t idx);
 };
 
+void mme_sim_core(const struct nv_device_info *devinfo,
+                  size_t macro_size, const void *macro,
+                  const struct mme_sim_state_ops *state_ops,
+                  void *state_handler);
+
 #ifdef __cplusplus
 }
 #endif