ext: Add the NoMali GPU no-simulation library

Add revision 9adf9d6e2d889a483a92136c96eb8a434d360561 of NoMali-model
from https://github.com/ARM-software/nomali-model. This library
implements the register interface of the Mali T6xx/T7xx series GPUs,
but doesn't do any rendering. It can be used to hide the effects of
software rendering.

1 files changed, 103 insertions, 0 deletions

diff --git a/ext/nomali/lib/regutils.hh b/ext/nomali/lib/regutils.hh
new file mode 100644
index 000000000..7957df2b7
--- /dev/null
+++ b/ext/nomali/lib/regutils.hh
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2014-2015 ARM Limited
+ * All rights reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Authors: Andreas Sandberg
+ */
+
+#ifndef _LIBNOMALIMODEL_REGUTILS_HH
+#define _LIBNOMALIMODEL_REGUTILS_HH
+
+#include <cassert>
+
+#include "types.hh"
+#include "mali_midg_regmap.h"
+
+namespace NoMali {
+
+/** Size of a function block in bytes */
+static const uint32_t BLOCK_REGS_SIZE(0x1000);
+/** Number of registers in a function block */
+static const uint32_t BLOCK_NUM_REGS = BLOCK_REGS_SIZE >> 2;
+
+/**
+ * Register blocks within the GPU.
+ *
+ * The GPU splits its register space into chunks belonging to specific
+ * blocks. This enum lists those blocks.
+ */
+enum class RegBlock : uint16_t {
+    GPU = 0x0,
+    JOB = 0x1,
+    MMU = 0x2,
+
+    UNKNOWN = 0xFFFF,
+};
+
+/** Get the register block from a GPU register address */
+static inline RegBlock
+getRegBlock(RegAddr addr)
+{
+    return RegBlock(addr.value >> 12);
+}
+
+/**
+ * Get the register address within a GPU block.
+ *
+ * This method masks away the block offset from a GPU register
+ * address. The resulting address is the address <i>within</i> a
+ * function block.
+ */
+static inline RegAddr
+getBlockReg(RegAddr addr)
+{
+    static_assert((BLOCK_REGS_SIZE & (BLOCK_REGS_SIZE - 1)) == 0,
+                  "BLOCK_REGS_SIZE is not a power of 2");
+    return RegAddr(addr.value & (BLOCK_REGS_SIZE - 1));
+}
+
+/**
+ * Get the slot number owning an address within the JobControl block.
+ *
+ * @param Address relative to the JobControl block.
+ */
+static inline unsigned
+getJobSlotNo(const RegAddr &addr)
+{
+    assert(addr.value >= JOB_SLOT0);
+    assert(addr.value <= 0xFFF);
+    return (addr.value - JOB_SLOT0) >> 7;
+}
+
+/**
+ * Get a JobSlot-relative address from a JobControl-relative address.
+ *
+ * @param Address relative to the JobControl block.
+ * @return Address relative the start of the JobSlot.
+ */
+static inline RegAddr
+getJobSlotAddr(const RegAddr &addr)
+{
+    const unsigned slot_no(getJobSlotNo(addr));
+    const RegAddr slot_base(RegAddr(JOB_SLOT0 + slot_no * 0x80));
+    return addr - slot_base;
+}
+
+/** Number of registers per job slot */
+static const unsigned JSn_NO_REGS = 0x20;
+
+}
+
+#endif //_LIBNOMALIMODEL_REGUTILS_HH