1 files changed, 156 insertions, 0 deletions
diff --git a/ext/nomali/lib/gpublock.cc b/ext/nomali/lib/gpublock.cc
new file mode 100644
index 000000000..7bc88de7e
--- /dev/null
+++ b/ext/nomali/lib/gpublock.cc
@@ -0,0 +1,156 @@
+/*
+ * 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
+ */
+
+#include "gpublock.hh"
+
+#include "gpu.hh"
+#include "regutils.hh"
+
+namespace NoMali {
+
+GPUBlock::GPUBlock(GPU &_gpu)
+    : gpu(_gpu), regs(BLOCK_NUM_REGS)
+{
+}
+
+GPUBlock::GPUBlock(GPU &_gpu, RegVector::size_type no_regs)
+    : gpu(_gpu), regs(no_regs)
+{
+}
+
+GPUBlock::GPUBlock(GPUBlock &&rhs)
+    : gpu(rhs.gpu),
+      regs(std::move(rhs.regs))
+{
+}
+
+GPUBlock::~GPUBlock()
+{
+}
+
+void
+GPUBlock::reset()
+{
+    for (auto &r : regs)
+        r = 0;
+}
+
+uint32_t
+GPUBlock::readReg(RegAddr addr)
+{
+    return readRegRaw(addr);
+}
+
+void
+GPUBlock::writeReg(RegAddr addr, uint32_t value)
+{
+    writeRegRaw(addr, value);
+}
+
+uint32_t
+GPUBlock::readRegRaw(RegAddr addr)
+{
+    return regs[addr];
+}
+
+void
+GPUBlock::writeRegRaw(RegAddr addr, uint32_t value)
+{
+    regs[addr] = value;
+}
+
+
+
+GPUBlockInt::GPUBlockInt(GPU &_gpu,
+                         const RegAddr &irq_raw_stat,
+                         const RegAddr &irq_clear,
+                         const RegAddr &irq_mask,
+                         const RegAddr &irq_stat)
+    : GPUBlock(_gpu),
+      addrIrqRawStat(irq_raw_stat), addrIrqClear(irq_clear),
+      addrIrqMask(irq_mask), addrIrqStat(irq_stat)
+{
+}
+
+GPUBlockInt::~GPUBlockInt()
+{
+}
+
+uint32_t
+GPUBlockInt::readReg(RegAddr addr)
+{
+    if (addr == addrIrqStat) {
+        return irqStatus();
+    } else {
+        return GPUBlock::readReg(addr);
+    }
+}
+
+void
+GPUBlockInt::writeReg(RegAddr addr, uint32_t value)
+{
+    if (addr == addrIrqRawStat) {
+        raiseInterrupt(value);
+    } else if (addr == addrIrqClear) {
+        clearInterrupt(value);
+    } else if (addr == addrIrqMask ) {
+        const bool old_int(intAsserted());
+        GPUBlock::writeReg(addr, value);
+        if (old_int != intAsserted())
+            onInterrupt(intAsserted());
+    } else if (addr == addrIrqStat ) {
+        // Ignore writes to the IRQ status register
+    } else {
+        // Handle addrIrqMask & defaults
+        GPUBlock::writeReg(addr, value);
+    }
+}
+
+
+
+void
+GPUBlockInt::raiseInterrupt(uint32_t ints)
+{
+    const bool old_int(intAsserted());
+
+    regs[addrIrqRawStat] |= ints;
+    // Is the interrupt line going high?
+    if (!old_int && intAsserted())
+        onInterrupt(1);
+}
+
+void
+GPUBlockInt::clearInterrupt(uint32_t ints)
+{
+    const bool old_int(intAsserted());
+
+    regs[addrIrqRawStat] &= ~ints;
+    // Is the interrupt line going low?
+    if (old_int && !intAsserted())
+        onInterrupt(0);
+}
+
+uint32_t
+GPUBlockInt::irqStatus() const
+{
+    return regs[addrIrqRawStat] & regs[addrIrqMask];
+}
+
+
+}