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Diffstat (limited to 'src/sim/tlb.hh')
| -rw-r--r-- | src/sim/tlb.hh | 150 |
1 files changed, 0 insertions, 150 deletions
diff --git a/src/sim/tlb.hh b/src/sim/tlb.hh deleted file mode 100644 index 9557fa3b1..000000000 --- a/src/sim/tlb.hh +++ /dev/null @@ -1,150 +0,0 @@ -/* - * Copyright (c) 2011 ARM Limited - * All rights reserved. - * - * The license below extends only to copyright in the software and shall - * not be construed as granting a license to any other intellectual - * property including but not limited to intellectual property relating - * to a hardware implementation of the functionality of the software - * licensed hereunder. You may use the software subject to the license - * terms below provided that you ensure that this notice is replicated - * unmodified and in its entirety in all distributions of the software, - * modified or unmodified, in source code or in binary form. - * - * Copyright (c) 2006 The Regents of The University of Michigan - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer; - * 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; - * neither the name of the copyright holders 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 - * OWNER 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. - * - * Authors: Gabe Black - */ - -#ifndef __SIM_TLB_HH__ -#define __SIM_TLB_HH__ - -#include "base/misc.hh" -#include "mem/request.hh" -#include "sim/sim_object.hh" - -class ThreadContext; -class BaseMasterPort; - -class BaseTLB : public SimObject -{ - protected: - BaseTLB(const Params *p) - : SimObject(p) - {} - - public: - enum Mode { Read, Write, Execute }; - - public: - virtual void demapPage(Addr vaddr, uint64_t asn) = 0; - - /** - * Remove all entries from the TLB - */ - virtual void flushAll() = 0; - - /** - * Take over from an old tlb context - */ - virtual void takeOverFrom(BaseTLB *otlb) = 0; - - /** - * Get the table walker master port if present. This is used for - * migrating port connections during a CPU takeOverFrom() - * call. For architectures that do not have a table walker, NULL - * is returned, hence the use of a pointer rather than a - * reference. - * - * @return A pointer to the walker master port or NULL if not present - */ - virtual BaseMasterPort* getMasterPort() { return NULL; } - - void memInvalidate() { flushAll(); } - - class Translation - { - public: - virtual ~Translation() - {} - - /** - * Signal that the translation has been delayed due to a hw page table - * walk. - */ - virtual void markDelayed() = 0; - - /* - * The memory for this object may be dynamically allocated, and it may - * be responsible for cleaning itself up which will happen in this - * function. Once it's called, the object is no longer valid. - */ - virtual void finish(const Fault &fault, RequestPtr req, - ThreadContext *tc, Mode mode) = 0; - - /** This function is used by the page table walker to determine if it - * should translate the a pending request or if the underlying request - * has been squashed. - * @ return Is the instruction that requested this translation squashed? - */ - virtual bool squashed() const { return false; } - }; -}; - -class GenericTLB : public BaseTLB -{ - protected: - GenericTLB(const Params *p) - : BaseTLB(p) - {} - - public: - void demapPage(Addr vaddr, uint64_t asn); - - Fault translateAtomic(RequestPtr req, ThreadContext *tc, Mode mode); - void translateTiming(RequestPtr req, ThreadContext *tc, - Translation *translation, Mode mode); - - - /** - * Do post-translation physical address finalization. - * - * This method is used by some architectures that need - * post-translation massaging of physical addresses. For example, - * X86 uses this to remap physical addresses in the APIC range to - * a range of physical memory not normally available to real x86 - * implementations. - * - * @param req Request to updated in-place. - * @param tc Thread context that created the request. - * @param mode Request type (read/write/execute). - * @return A fault on failure, NoFault otherwise. - */ - Fault finalizePhysical(RequestPtr req, ThreadContext *tc, Mode mode) const; -}; - -#endif // __ARCH_SPARC_TLB_HH__ |