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-rw-r--r--src/gpu-compute/cl_driver.cc272
1 files changed, 272 insertions, 0 deletions
diff --git a/src/gpu-compute/cl_driver.cc b/src/gpu-compute/cl_driver.cc
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+++ b/src/gpu-compute/cl_driver.cc
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+/*
+ * Copyright (c) 2012-2015 Advanced Micro Devices, Inc.
+ * All rights reserved.
+ *
+ * For use for simulation and test purposes only
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Author: Anthony Gutierrez
+ */
+
+#include "gpu-compute/cl_driver.hh"
+
+#include "base/intmath.hh"
+#include "cpu/thread_context.hh"
+#include "gpu-compute/dispatcher.hh"
+#include "gpu-compute/hsa_code.hh"
+#include "gpu-compute/hsa_kernel_info.hh"
+#include "gpu-compute/hsa_object.hh"
+#include "params/ClDriver.hh"
+#include "sim/process.hh"
+#include "sim/syscall_emul_buf.hh"
+
+ClDriver::ClDriver(ClDriverParams *p)
+ : EmulatedDriver(p), hsaCode(0)
+{
+ for (const auto &codeFile : p->codefile)
+ codeFiles.push_back(&codeFile);
+
+ maxFuncArgsSize = 0;
+
+ for (int i = 0; i < codeFiles.size(); ++i) {
+ HsaObject *obj = HsaObject::createHsaObject(*codeFiles[i]);
+
+ for (int k = 0; k < obj->numKernels(); ++k) {
+ assert(obj->getKernel(k));
+ kernels.push_back(obj->getKernel(k));
+ kernels.back()->setReadonlyData((uint8_t*)obj->readonlyData);
+ int kern_funcargs_size = kernels.back()->funcarg_size;
+ maxFuncArgsSize = maxFuncArgsSize < kern_funcargs_size ?
+ kern_funcargs_size : maxFuncArgsSize;
+ }
+ }
+
+ int name_offs = 0;
+ int code_offs = 0;
+
+ for (int i = 0; i < kernels.size(); ++i) {
+ kernelInfo.push_back(HsaKernelInfo());
+ HsaCode *k = kernels[i];
+
+ k->generateHsaKernelInfo(&kernelInfo[i]);
+
+ kernelInfo[i].name_offs = name_offs;
+ kernelInfo[i].code_offs = code_offs;
+
+ name_offs += k->name().size() + 1;
+ code_offs += k->numInsts() * sizeof(GPUStaticInst*);
+ }
+}
+
+void
+ClDriver::handshake(GpuDispatcher *_dispatcher)
+{
+ dispatcher = _dispatcher;
+ dispatcher->setFuncargsSize(maxFuncArgsSize);
+}
+
+int
+ClDriver::open(LiveProcess *p, ThreadContext *tc, int mode, int flags)
+{
+ int fd = p->allocFD(-1, filename, 0, 0, false);
+ FDEntry *fde = p->getFDEntry(fd);
+ fde->driver = this;
+
+ return fd;
+}
+
+int
+ClDriver::ioctl(LiveProcess *process, ThreadContext *tc, unsigned req)
+{
+ int index = 2;
+ Addr buf_addr = process->getSyscallArg(tc, index);
+
+ switch (req) {
+ case HSA_GET_SIZES:
+ {
+ TypedBufferArg<HsaDriverSizes> sizes(buf_addr);
+ sizes->num_kernels = kernels.size();
+ sizes->string_table_size = 0;
+ sizes->code_size = 0;
+ sizes->readonly_size = 0;
+
+ if (kernels.size() > 0) {
+ // all kernels will share the same read-only memory
+ sizes->readonly_size =
+ kernels[0]->getSize(HsaCode::MemorySegment::READONLY);
+ // check our assumption
+ for (int i = 1; i<kernels.size(); ++i) {
+ assert(sizes->readonly_size ==
+ kernels[i]->getSize(HsaCode::MemorySegment::READONLY));
+ }
+ }
+
+ for (int i = 0; i < kernels.size(); ++i) {
+ HsaCode *k = kernels[i];
+ // add one for terminating '\0'
+ sizes->string_table_size += k->name().size() + 1;
+ sizes->code_size += k->numInsts() * sizeof(GPUStaticInst*);
+ }
+
+ sizes.copyOut(tc->getMemProxy());
+ }
+ break;
+
+ case HSA_GET_KINFO:
+ {
+ TypedBufferArg<HsaKernelInfo>
+ kinfo(buf_addr, sizeof(HsaKernelInfo) * kernels.size());
+
+ for (int i = 0; i < kernels.size(); ++i) {
+ HsaKernelInfo *ki = &kinfo[i];
+ ki->name_offs = kernelInfo[i].name_offs;
+ ki->code_offs = kernelInfo[i].code_offs;
+ ki->sRegCount = kernelInfo[i].sRegCount;
+ ki->dRegCount = kernelInfo[i].dRegCount;
+ ki->cRegCount = kernelInfo[i].cRegCount;
+ ki->static_lds_size = kernelInfo[i].static_lds_size;
+ ki->private_mem_size = kernelInfo[i].private_mem_size;
+ ki->spill_mem_size = kernelInfo[i].spill_mem_size;
+ }
+
+ kinfo.copyOut(tc->getMemProxy());
+ }
+ break;
+
+ case HSA_GET_STRINGS:
+ {
+ int string_table_size = 0;
+ for (int i = 0; i < kernels.size(); ++i) {
+ HsaCode *k = kernels[i];
+ string_table_size += k->name().size() + 1;
+ }
+
+ BufferArg buf(buf_addr, string_table_size);
+ char *bufp = (char*)buf.bufferPtr();
+
+ for (int i = 0; i < kernels.size(); ++i) {
+ HsaCode *k = kernels[i];
+ const char *n = k->name().c_str();
+
+ // idiomatic string copy
+ while ((*bufp++ = *n++));
+ }
+
+ assert(bufp - (char *)buf.bufferPtr() == string_table_size);
+
+ buf.copyOut(tc->getMemProxy());
+ }
+ break;
+
+ case HSA_GET_READONLY_DATA:
+ {
+ // we can pick any kernel --- they share the same
+ // readonly segment (this assumption is checked in GET_SIZES)
+ uint64_t size =
+ kernels.back()->getSize(HsaCode::MemorySegment::READONLY);
+ BufferArg data(buf_addr, size);
+ char *datap = (char *)data.bufferPtr();
+ memcpy(datap,
+ kernels.back()->readonly_data,
+ size);
+ data.copyOut(tc->getMemProxy());
+ }
+ break;
+
+ case HSA_GET_CODE:
+ {
+ // set hsaCode pointer
+ hsaCode = buf_addr;
+ int code_size = 0;
+
+ for (int i = 0; i < kernels.size(); ++i) {
+ HsaCode *k = kernels[i];
+ code_size += k->numInsts() * sizeof(TheGpuISA::RawMachInst);
+ }
+
+ TypedBufferArg<TheGpuISA::RawMachInst> buf(buf_addr, code_size);
+ TheGpuISA::RawMachInst *bufp = buf;
+
+ int buf_idx = 0;
+
+ for (int i = 0; i < kernels.size(); ++i) {
+ HsaCode *k = kernels[i];
+
+ for (int j = 0; j < k->numInsts(); ++j) {
+ bufp[buf_idx] = k->insts()->at(j);
+ ++buf_idx;
+ }
+ }
+
+ buf.copyOut(tc->getMemProxy());
+ }
+ break;
+
+ case HSA_GET_CU_CNT:
+ {
+ BufferArg buf(buf_addr, sizeof(uint32_t));
+ *((uint32_t*)buf.bufferPtr()) = dispatcher->getNumCUs();
+ buf.copyOut(tc->getMemProxy());
+ }
+ break;
+
+ case HSA_GET_VSZ:
+ {
+ BufferArg buf(buf_addr, sizeof(uint32_t));
+ *((uint32_t*)buf.bufferPtr()) = VSZ;
+ buf.copyOut(tc->getMemProxy());
+ }
+ break;
+
+ default:
+ fatal("ClDriver: bad ioctl %d\n", req);
+ }
+
+ return 0;
+}
+
+const char*
+ClDriver::codeOffToKernelName(uint64_t code_ptr)
+{
+ assert(hsaCode);
+ uint32_t code_offs = code_ptr - hsaCode;
+
+ for (int i = 0; i < kernels.size(); ++i) {
+ if (code_offs == kernelInfo[i].code_offs) {
+ return kernels[i]->name().c_str();
+ }
+ }
+
+ return nullptr;
+}
+
+ClDriver*
+ClDriverParams::create()
+{
+ return new ClDriver(this);
+}
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