| /* |
| * Copyright (c) 2004-2005 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. |
| * |
| * Authors: Ali Saidi |
| * Andrew Schultz |
| */ |
| |
| /** @file |
| * Tsunami PChip (pci) |
| */ |
| #include "dev/alpha/tsunami_pchip.hh" |
| |
| #include <deque> |
| #include <string> |
| #include <vector> |
| |
| #include "base/trace.hh" |
| #include "config/the_isa.hh" |
| #include "debug/Tsunami.hh" |
| #include "dev/alpha/tsunami.hh" |
| #include "dev/alpha/tsunami_cchip.hh" |
| #include "dev/alpha/tsunamireg.h" |
| #include "dev/pci/device.hh" |
| #include "mem/packet.hh" |
| #include "mem/packet_access.hh" |
| #include "sim/system.hh" |
| |
| using namespace std; |
| //Should this be AlphaISA? |
| using namespace TheISA; |
| |
| TsunamiPChip::TsunamiPChip(const Params *p) |
| : GenericPciHost(p), |
| pioRange(RangeSize(p->pio_addr, 0x1000)), |
| pioDelay(p->pio_latency) |
| { |
| for (int i = 0; i < 4; i++) { |
| wsba[i] = 0; |
| wsm[i] = 0; |
| tba[i] = 0; |
| } |
| |
| // initialize pchip control register |
| pctl = (ULL(0x1) << 20) | (ULL(0x1) << 32) | (ULL(0x2) << 36); |
| |
| //Set back pointer in tsunami |
| p->tsunami->pchip = this; |
| } |
| |
| Tick |
| TsunamiPChip::read(PacketPtr pkt) |
| { |
| // We only need to handle our own configuration registers, pass |
| // unknown addresses to the generic code. |
| if (!pioRange.contains(pkt->getAddr())) |
| return GenericPciHost::read(pkt); |
| |
| Addr daddr = (pkt->getAddr() - pioRange.start()) >> 6;; |
| assert(pkt->getSize() == sizeof(uint64_t)); |
| |
| |
| DPRINTF(Tsunami, "read va=%#x size=%d\n", pkt->getAddr(), pkt->getSize()); |
| |
| switch(daddr) { |
| case TSDEV_PC_WSBA0: |
| pkt->setLE(wsba[0]); |
| break; |
| case TSDEV_PC_WSBA1: |
| pkt->setLE(wsba[1]); |
| break; |
| case TSDEV_PC_WSBA2: |
| pkt->setLE(wsba[2]); |
| break; |
| case TSDEV_PC_WSBA3: |
| pkt->setLE(wsba[3]); |
| break; |
| case TSDEV_PC_WSM0: |
| pkt->setLE(wsm[0]); |
| break; |
| case TSDEV_PC_WSM1: |
| pkt->setLE(wsm[1]); |
| break; |
| case TSDEV_PC_WSM2: |
| pkt->setLE(wsm[2]); |
| break; |
| case TSDEV_PC_WSM3: |
| pkt->setLE(wsm[3]); |
| break; |
| case TSDEV_PC_TBA0: |
| pkt->setLE(tba[0]); |
| break; |
| case TSDEV_PC_TBA1: |
| pkt->setLE(tba[1]); |
| break; |
| case TSDEV_PC_TBA2: |
| pkt->setLE(tba[2]); |
| break; |
| case TSDEV_PC_TBA3: |
| pkt->setLE(tba[3]); |
| break; |
| case TSDEV_PC_PCTL: |
| pkt->setLE(pctl); |
| break; |
| case TSDEV_PC_PLAT: |
| panic("PC_PLAT not implemented\n"); |
| case TSDEV_PC_RES: |
| panic("PC_RES not implemented\n"); |
| case TSDEV_PC_PERROR: |
| pkt->setLE((uint64_t)0x00); |
| break; |
| case TSDEV_PC_PERRMASK: |
| pkt->setLE((uint64_t)0x00); |
| break; |
| case TSDEV_PC_PERRSET: |
| panic("PC_PERRSET not implemented\n"); |
| case TSDEV_PC_TLBIV: |
| panic("PC_TLBIV not implemented\n"); |
| case TSDEV_PC_TLBIA: |
| pkt->setLE((uint64_t)0x00); // shouldn't be readable, but linux |
| break; |
| case TSDEV_PC_PMONCTL: |
| panic("PC_PMONCTL not implemented\n"); |
| case TSDEV_PC_PMONCNT: |
| panic("PC_PMONCTN not implemented\n"); |
| default: |
| panic("Default in PChip Read reached reading 0x%x\n", daddr); |
| } |
| |
| pkt->makeAtomicResponse(); |
| return pioDelay; |
| |
| } |
| |
| Tick |
| TsunamiPChip::write(PacketPtr pkt) |
| { |
| // We only need to handle our own configuration registers, pass |
| // unknown addresses to the generic code. |
| if (!pioRange.contains(pkt->getAddr())) |
| return GenericPciHost::write(pkt); |
| |
| Addr daddr = (pkt->getAddr() - pioRange.start()) >> 6; |
| |
| assert(pkt->getSize() == sizeof(uint64_t)); |
| |
| DPRINTF(Tsunami, "write - va=%#x size=%d \n", pkt->getAddr(), pkt->getSize()); |
| |
| switch(daddr) { |
| case TSDEV_PC_WSBA0: |
| wsba[0] = pkt->getLE<uint64_t>(); |
| break; |
| case TSDEV_PC_WSBA1: |
| wsba[1] = pkt->getLE<uint64_t>(); |
| break; |
| case TSDEV_PC_WSBA2: |
| wsba[2] = pkt->getLE<uint64_t>(); |
| break; |
| case TSDEV_PC_WSBA3: |
| wsba[3] = pkt->getLE<uint64_t>(); |
| break; |
| case TSDEV_PC_WSM0: |
| wsm[0] = pkt->getLE<uint64_t>(); |
| break; |
| case TSDEV_PC_WSM1: |
| wsm[1] = pkt->getLE<uint64_t>(); |
| break; |
| case TSDEV_PC_WSM2: |
| wsm[2] = pkt->getLE<uint64_t>(); |
| break; |
| case TSDEV_PC_WSM3: |
| wsm[3] = pkt->getLE<uint64_t>(); |
| break; |
| case TSDEV_PC_TBA0: |
| tba[0] = pkt->getLE<uint64_t>(); |
| break; |
| case TSDEV_PC_TBA1: |
| tba[1] = pkt->getLE<uint64_t>(); |
| break; |
| case TSDEV_PC_TBA2: |
| tba[2] = pkt->getLE<uint64_t>(); |
| break; |
| case TSDEV_PC_TBA3: |
| tba[3] = pkt->getLE<uint64_t>(); |
| break; |
| case TSDEV_PC_PCTL: |
| pctl = pkt->getLE<uint64_t>(); |
| break; |
| case TSDEV_PC_PLAT: |
| panic("PC_PLAT not implemented\n"); |
| case TSDEV_PC_RES: |
| panic("PC_RES not implemented\n"); |
| case TSDEV_PC_PERROR: |
| break; |
| case TSDEV_PC_PERRMASK: |
| panic("PC_PERRMASK not implemented\n"); |
| case TSDEV_PC_PERRSET: |
| panic("PC_PERRSET not implemented\n"); |
| case TSDEV_PC_TLBIV: |
| panic("PC_TLBIV not implemented\n"); |
| case TSDEV_PC_TLBIA: |
| break; // value ignored, supposted to invalidate SG TLB |
| case TSDEV_PC_PMONCTL: |
| panic("PC_PMONCTL not implemented\n"); |
| case TSDEV_PC_PMONCNT: |
| panic("PC_PMONCTN not implemented\n"); |
| default: |
| panic("Default in PChip write reached reading 0x%x\n", daddr); |
| |
| } // uint64_t |
| |
| pkt->makeAtomicResponse(); |
| return pioDelay; |
| } |
| |
| |
| AddrRangeList |
| TsunamiPChip::getAddrRanges() const |
| { |
| return AddrRangeList({ |
| RangeSize(confBase, confSize), |
| pioRange |
| }); |
| } |
| |
| |
| #define DMA_ADDR_MASK ULL(0x3ffffffff) |
| |
| Addr |
| TsunamiPChip::dmaAddr(const PciBusAddr &dev, Addr busAddr) const |
| { |
| // compare the address to the window base registers |
| uint64_t tbaMask = 0; |
| uint64_t baMask = 0; |
| |
| uint64_t windowMask = 0; |
| uint64_t windowBase = 0; |
| |
| uint64_t pteEntry = 0; |
| |
| Addr pteAddr; |
| Addr dmaAddr; |
| |
| #if 0 |
| DPRINTF(IdeDisk, "Translation for bus address: %#x\n", busAddr); |
| for (int i = 0; i < 4; i++) { |
| DPRINTF(IdeDisk, "(%d) base:%#x mask:%#x\n", |
| i, wsba[i], wsm[i]); |
| |
| windowBase = wsba[i]; |
| windowMask = ~wsm[i] & (ULL(0xfff) << 20); |
| |
| if ((busAddr & windowMask) == (windowBase & windowMask)) { |
| DPRINTF(IdeDisk, "Would have matched %d (wb:%#x wm:%#x --> ba&wm:%#x wb&wm:%#x)\n", |
| i, windowBase, windowMask, (busAddr & windowMask), |
| (windowBase & windowMask)); |
| } |
| } |
| #endif |
| |
| for (int i = 0; i < 4; i++) { |
| |
| windowBase = wsba[i]; |
| windowMask = ~wsm[i] & (ULL(0xfff) << 20); |
| |
| if ((busAddr & windowMask) == (windowBase & windowMask)) { |
| |
| if (wsba[i] & 0x1) { // see if enabled |
| if (wsba[i] & 0x2) { // see if SG bit is set |
| /** @todo |
| This currently is faked by just doing a direct |
| read from memory, however, to be realistic, this |
| needs to actually do a bus transaction. The process |
| is explained in the tsunami documentation on page |
| 10-12 and basically munges the address to look up a |
| PTE from a table in memory and then uses that mapping |
| to create an address for the SG page |
| */ |
| |
| tbaMask = ~(((wsm[i] & (ULL(0xfff) << 20)) >> 10) | ULL(0x3ff)); |
| baMask = (wsm[i] & (ULL(0xfff) << 20)) | (ULL(0x7f) << 13); |
| pteAddr = (tba[i] & tbaMask) | ((busAddr & baMask) >> 10); |
| |
| sys->physProxy.readBlob(pteAddr, (uint8_t*)&pteEntry, |
| sizeof(uint64_t)); |
| |
| dmaAddr = ((pteEntry & ~ULL(0x1)) << 12) | (busAddr & ULL(0x1fff)); |
| |
| } else { |
| baMask = (wsm[i] & (ULL(0xfff) << 20)) | ULL(0xfffff); |
| tbaMask = ~baMask; |
| dmaAddr = (tba[i] & tbaMask) | (busAddr & baMask); |
| } |
| |
| return (dmaAddr & DMA_ADDR_MASK); |
| } |
| } |
| } |
| |
| // if no match was found, then return the original address |
| return busAddr; |
| } |
| |
| void |
| TsunamiPChip::serialize(CheckpointOut &cp) const |
| { |
| SERIALIZE_SCALAR(pctl); |
| SERIALIZE_ARRAY(wsba, 4); |
| SERIALIZE_ARRAY(wsm, 4); |
| SERIALIZE_ARRAY(tba, 4); |
| } |
| |
| void |
| TsunamiPChip::unserialize(CheckpointIn &cp) |
| { |
| UNSERIALIZE_SCALAR(pctl); |
| UNSERIALIZE_ARRAY(wsba, 4); |
| UNSERIALIZE_ARRAY(wsm, 4); |
| UNSERIALIZE_ARRAY(tba, 4); |
| } |
| |
| |
| TsunamiPChip * |
| TsunamiPChipParams::create() |
| { |
| return new TsunamiPChip(this); |
| } |
