summaryrefslogtreecommitdiff
path: root/arch/alpha/vtophys.cc
diff options
context:
space:
mode:
Diffstat (limited to 'arch/alpha/vtophys.cc')
-rw-r--r--arch/alpha/vtophys.cc268
1 files changed, 0 insertions, 268 deletions
diff --git a/arch/alpha/vtophys.cc b/arch/alpha/vtophys.cc
deleted file mode 100644
index 40261426d..000000000
--- a/arch/alpha/vtophys.cc
+++ /dev/null
@@ -1,268 +0,0 @@
-/*
- * Copyright (c) 2002-2005 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.
- */
-
-#include <string>
-
-#include "arch/alpha/vtophys.hh"
-#include "base/trace.hh"
-#include "cpu/exec_context.hh"
-#include "mem/functional/physical.hh"
-
-using namespace std;
-using namespace AlphaISA;
-
-AlphaISA::PageTableEntry
-kernel_pte_lookup(PhysicalMemory *pmem, Addr ptbr, AlphaISA::VAddr vaddr)
-{
- Addr level1_pte = ptbr + vaddr.level1();
- AlphaISA::PageTableEntry level1 = pmem->phys_read_qword(level1_pte);
- if (!level1.valid()) {
- DPRINTF(VtoPhys, "level 1 PTE not valid, va = %#\n", vaddr);
- return 0;
- }
-
- Addr level2_pte = level1.paddr() + vaddr.level2();
- AlphaISA::PageTableEntry level2 = pmem->phys_read_qword(level2_pte);
- if (!level2.valid()) {
- DPRINTF(VtoPhys, "level 2 PTE not valid, va = %#x\n", vaddr);
- return 0;
- }
-
- Addr level3_pte = level2.paddr() + vaddr.level3();
- AlphaISA::PageTableEntry level3 = pmem->phys_read_qword(level3_pte);
- if (!level3.valid()) {
- DPRINTF(VtoPhys, "level 3 PTE not valid, va = %#x\n", vaddr);
- return 0;
- }
- return level3;
-}
-
-Addr
-vtophys(PhysicalMemory *xc, Addr vaddr)
-{
- Addr paddr = 0;
- if (AlphaISA::IsUSeg(vaddr))
- DPRINTF(VtoPhys, "vtophys: invalid vaddr %#x", vaddr);
- else if (AlphaISA::IsK0Seg(vaddr))
- paddr = AlphaISA::K0Seg2Phys(vaddr);
- else
- panic("vtophys: ptbr is not set on virtual lookup");
-
- DPRINTF(VtoPhys, "vtophys(%#x) -> %#x\n", vaddr, paddr);
-
- return paddr;
-}
-
-Addr
-vtophys(ExecContext *xc, Addr addr)
-{
- AlphaISA::VAddr vaddr = addr;
- Addr ptbr = xc->readMiscReg(AlphaISA::IPR_PALtemp20);
- Addr paddr = 0;
- //@todo Andrew couldn't remember why he commented some of this code
- //so I put it back in. Perhaps something to do with gdb debugging?
- if (AlphaISA::PcPAL(vaddr) && (vaddr < EV5::PalMax)) {
- paddr = vaddr & ~ULL(1);
- } else {
- if (AlphaISA::IsK0Seg(vaddr)) {
- paddr = AlphaISA::K0Seg2Phys(vaddr);
- } else if (!ptbr) {
- paddr = vaddr;
- } else {
- AlphaISA::PageTableEntry pte =
- kernel_pte_lookup(xc->getPhysMemPtr(), ptbr, vaddr);
- if (pte.valid())
- paddr = pte.paddr() | vaddr.offset();
- }
- }
-
-
- DPRINTF(VtoPhys, "vtophys(%#x) -> %#x\n", vaddr, paddr);
-
- return paddr;
-}
-
-uint8_t *
-ptomem(ExecContext *xc, Addr paddr, size_t len)
-{
- return xc->getPhysMemPtr()->dma_addr(paddr, len);
-}
-
-uint8_t *
-vtomem(ExecContext *xc, Addr vaddr, size_t len)
-{
- Addr paddr = vtophys(xc, vaddr);
- return xc->getPhysMemPtr()->dma_addr(paddr, len);
-}
-
-void
-CopyOut(ExecContext *xc, void *dest, Addr src, size_t cplen)
-{
- Addr paddr;
- char *dmaaddr;
- char *dst = (char *)dest;
- int len;
-
- paddr = vtophys(xc, src);
- len = min((int)(AlphaISA::PageBytes - (paddr & AlphaISA::PageOffset)),
- (int)cplen);
- dmaaddr = (char *)xc->getPhysMemPtr()->dma_addr(paddr, len);
- assert(dmaaddr);
-
- memcpy(dst, dmaaddr, len);
- if (len == cplen)
- return;
-
- cplen -= len;
- dst += len;
- src += len;
-
- while (cplen > AlphaISA::PageBytes) {
- paddr = vtophys(xc, src);
- dmaaddr = (char *)xc->getPhysMemPtr()->dma_addr(paddr,
- AlphaISA::PageBytes);
- assert(dmaaddr);
-
- memcpy(dst, dmaaddr, AlphaISA::PageBytes);
- cplen -= AlphaISA::PageBytes;
- dst += AlphaISA::PageBytes;
- src += AlphaISA::PageBytes;
- }
-
- if (cplen > 0) {
- paddr = vtophys(xc, src);
- dmaaddr = (char *)xc->getPhysMemPtr()->dma_addr(paddr, cplen);
- assert(dmaaddr);
-
- memcpy(dst, dmaaddr, cplen);
- }
-}
-
-void
-CopyIn(ExecContext *xc, Addr dest, void *source, size_t cplen)
-{
- Addr paddr;
- char *dmaaddr;
- char *src = (char *)source;
- int len;
-
- paddr = vtophys(xc, dest);
- len = min((int)(AlphaISA::PageBytes - (paddr & AlphaISA::PageOffset)),
- (int)cplen);
- dmaaddr = (char *)xc->getPhysMemPtr()->dma_addr(paddr, len);
- assert(dmaaddr);
-
- memcpy(dmaaddr, src, len);
- if (len == cplen)
- return;
-
- cplen -= len;
- src += len;
- dest += len;
-
- while (cplen > AlphaISA::PageBytes) {
- paddr = vtophys(xc, dest);
- dmaaddr = (char *)xc->getPhysMemPtr()->dma_addr(paddr,
- AlphaISA::PageBytes);
- assert(dmaaddr);
-
- memcpy(dmaaddr, src, AlphaISA::PageBytes);
- cplen -= AlphaISA::PageBytes;
- src += AlphaISA::PageBytes;
- dest += AlphaISA::PageBytes;
- }
-
- if (cplen > 0) {
- paddr = vtophys(xc, dest);
- dmaaddr = (char *)xc->getPhysMemPtr()->dma_addr(paddr, cplen);
- assert(dmaaddr);
-
- memcpy(dmaaddr, src, cplen);
- }
-}
-
-void
-CopyString(ExecContext *xc, char *dst, Addr vaddr, size_t maxlen)
-{
- Addr paddr;
- char *dmaaddr;
- int len;
-
- paddr = vtophys(xc, vaddr);
- len = min((int)(AlphaISA::PageBytes - (paddr & AlphaISA::PageOffset)),
- (int)maxlen);
- dmaaddr = (char *)xc->getPhysMemPtr()->dma_addr(paddr, len);
- assert(dmaaddr);
-
- char *term = (char *)memchr(dmaaddr, 0, len);
- if (term)
- len = term - dmaaddr + 1;
-
- memcpy(dst, dmaaddr, len);
-
- if (term || len == maxlen)
- return;
-
- maxlen -= len;
- dst += len;
- vaddr += len;
-
- while (maxlen > AlphaISA::PageBytes) {
- paddr = vtophys(xc, vaddr);
- dmaaddr = (char *)xc->getPhysMemPtr()->dma_addr(paddr,
- AlphaISA::PageBytes);
- assert(dmaaddr);
-
- char *term = (char *)memchr(dmaaddr, 0, AlphaISA::PageBytes);
- len = term ? (term - dmaaddr + 1) : AlphaISA::PageBytes;
-
- memcpy(dst, dmaaddr, len);
- if (term)
- return;
-
- maxlen -= AlphaISA::PageBytes;
- dst += AlphaISA::PageBytes;
- vaddr += AlphaISA::PageBytes;
- }
-
- if (maxlen > 0) {
- paddr = vtophys(xc, vaddr);
- dmaaddr = (char *)xc->getPhysMemPtr()->dma_addr(paddr, maxlen);
- assert(dmaaddr);
-
- char *term = (char *)memchr(dmaaddr, 0, maxlen);
- len = term ? (term - dmaaddr + 1) : maxlen;
-
- memcpy(dst, dmaaddr, len);
-
- maxlen -= len;
- }
-
- if (maxlen == 0)
- dst[maxlen] = '\0';
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-01 18:19:16 +0000