dev, arm: Add a customizable NoMali GPU model

Add a customizable NoMali GPU model and an example Mali T760
configuration. Unlike the normal NoMali model (NoMaliGpu), the
NoMaliCustopmGpu model exposes all the important GPU ID registers to
Python. This makes it possible to implement custom GPU configurations
by without changing the underlying NoMali library.

Change-Id: I4fdba05844c3589893aa1a4c11dc376ec33d4e9e
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Andreas Hansson <andreas.hansson@arm.com>

1 files changed, 65 insertions, 0 deletions

diff --git a/src/dev/arm/gpu_nomali.cc b/src/dev/arm/gpu_nomali.cc
index da0f43ef9..a6c3e29e5 100644
--- a/src/dev/arm/gpu_nomali.cc
+++ b/src/dev/arm/gpu_nomali.cc
@@ -44,6 +44,8 @@
 #include "dev/arm/realview.hh"
 #include "enums/MemoryMode.hh"
 #include "mem/packet_access.hh"
+#include "nomali/lib/mali_midg_regmap.h"
+#include "params/CustomNoMaliGpu.hh"
 #include "params/NoMaliGpu.hh"
 
 static const std::map<Enums::NoMaliGpuType, nomali_gpu_type_t> gpuTypeMap{
@@ -320,8 +322,71 @@ NoMaliGpu::_reset(nomali_handle_t h, void *usr)
     _this->onReset();
 }
 
+
+CustomNoMaliGpu::CustomNoMaliGpu(const CustomNoMaliGpuParams *p)
+    : NoMaliGpu(p),
+      idRegs{
+        { GPU_CONTROL_REG(GPU_ID), p->gpu_id },
+        { GPU_CONTROL_REG(L2_FEATURES), p->l2_features },
+        { GPU_CONTROL_REG(TILER_FEATURES), p->tiler_features },
+        { GPU_CONTROL_REG(MEM_FEATURES), p->mem_features },
+        { GPU_CONTROL_REG(MMU_FEATURES), p->mmu_features },
+        { GPU_CONTROL_REG(AS_PRESENT), p->as_present },
+        { GPU_CONTROL_REG(JS_PRESENT), p->js_present },
+
+        { GPU_CONTROL_REG(THREAD_MAX_THREADS), p->thread_max_threads },
+        { GPU_CONTROL_REG(THREAD_MAX_WORKGROUP_SIZE),
+          p->thread_max_workgroup_size },
+        { GPU_CONTROL_REG(THREAD_MAX_BARRIER_SIZE),
+          p->thread_max_barrier_size },
+        { GPU_CONTROL_REG(THREAD_FEATURES), p->thread_features },
+
+        { GPU_CONTROL_REG(SHADER_PRESENT_LO), bits(p->shader_present, 31, 0) },
+        { GPU_CONTROL_REG(SHADER_PRESENT_HI), bits(p->shader_present, 63, 32) },
+        { GPU_CONTROL_REG(TILER_PRESENT_LO), bits(p->tiler_present, 31, 0) },
+        { GPU_CONTROL_REG(TILER_PRESENT_HI), bits(p->tiler_present, 63, 32) },
+        { GPU_CONTROL_REG(L2_PRESENT_LO), bits(p->l2_present, 31, 0) },
+        { GPU_CONTROL_REG(L2_PRESENT_HI), bits(p->l2_present, 63, 32) },
+      }
+{
+    fatal_if(p->texture_features.size() > 3,
+             "Too many texture feature registers specified (%i)\n",
+             p->texture_features.size());
+
+    fatal_if(p->js_features.size() > 16,
+             "Too many job slot feature registers specified (%i)\n",
+             p->js_features.size());
+
+    for (int i = 0; i < p->texture_features.size(); i++)
+        idRegs[TEXTURE_FEATURES_REG(i)] = p->texture_features[i];
+
+    for (int i = 0; i < p->js_features.size(); i++)
+        idRegs[JS_FEATURES_REG(i)] = p->js_features[i];
+}
+
+CustomNoMaliGpu::~CustomNoMaliGpu()
+{
+}
+
+void
+CustomNoMaliGpu::onReset()
+{
+    NoMaliGpu::onReset();
+
+    for (const auto &reg : idRegs)
+        writeRegRaw(reg.first, reg.second);
+}
+
+
+
 NoMaliGpu *
 NoMaliGpuParams::create()
 {
     return new NoMaliGpu(this);
 }
+
+CustomNoMaliGpu *
+CustomNoMaliGpuParams::create()
+{
+    return new CustomNoMaliGpu(this);
+}