src/arch/arm/fastmodel/iris/tlb.cc

   1 /*
   2  * Copyright 2019 Google Inc.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met: redistributions of source code must retain the above copyright
   7  * notice, this list of conditions and the following disclaimer;
   8  * redistributions in binary form must reproduce the above copyright
   9  * notice, this list of conditions and the following disclaimer in the
  10  * documentation and/or other materials provided with the distribution;
  11  * neither the name of the copyright holders nor the names of its
  12  * contributors may be used to endorse or promote products derived from
  13  * this software without specific prior written permission.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  16  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  17  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  18  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  19  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  21  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  25  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #include "arch/arm/fastmodel/iris/tlb.hh"
  29
  30 #include "arch/arm/fastmodel/iris/thread_context.hh"
  31 #include "arch/generic/debugfaults.hh"
  32 #include "params/IrisTLB.hh"
  33 #include "sim/faults.hh"
  34
  35 Fault
  36 Iris::TLB::translateFunctional(
  37         const RequestPtr &req, ::ThreadContext *tc, Mode mode)
  38 {
  39     auto *itc = dynamic_cast<Iris::ThreadContext *>(tc);
  40     panic_if(!itc, "Failed to cast to Iris::ThreadContext *");
  41
  42     Addr vaddr = req->getVaddr();
  43     Addr paddr = 0;
  44     bool success = itc->translateAddress(paddr, vaddr);
  45     if (!success) {
  46         return std::make_shared<GenericISA::M5PanicFault>(
  47                 "Failed translation");
  48     } else {
  49         req->setPaddr(paddr);
  50         return NoFault;
  51     }
  52 }
  53
  54 Fault
  55 Iris::TLB::translateAtomic(
  56         const RequestPtr &req, ::ThreadContext *tc, Mode mode)
  57 {
  58     return translateFunctional(req, tc, mode);
  59 }
  60
  61 void
  62 Iris::TLB::translateTiming(const RequestPtr &req, ::ThreadContext *tc,
  63         Translation *translation, Mode mode)
  64 {
  65     assert(translation);
  66     translation->finish(translateAtomic(req, tc, mode), req, tc, mode);
  67 }