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-rw-r--r--dev/pciconfigall.cc224
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diff --git a/dev/pciconfigall.cc b/dev/pciconfigall.cc
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-/*
- * 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.
- */
-
-/* @file
- * PCI Configspace implementation
- */
-
-#include <deque>
-#include <string>
-#include <vector>
-#include <bitset>
-
-#include "base/trace.hh"
-#include "dev/pciconfigall.hh"
-#include "dev/pcidev.hh"
-#include "dev/pcireg.h"
-#include "dev/platform.hh"
-#include "mem/packet.hh"
-#include "sim/builder.hh"
-#include "sim/system.hh"
-
-using namespace std;
-
-PciConfigAll::PciConfigAll(Params *p)
- : BasicPioDevice(p)
-{
- pioSize = 0xffffff;
-
- // Set backpointer for pci config. Really the config stuff should be able to
- // automagically do this
- p->platform->pciconfig = this;
-
- // Make all the pointers to devices null
- for(int x=0; x < MAX_PCI_DEV; x++)
- for(int y=0; y < MAX_PCI_FUNC; y++)
- devices[x][y] = NULL;
-}
-
-// If two interrupts share the same line largely bad things will happen.
-// Since we don't track how many times an interrupt was set and correspondingly
-// cleared two devices on the same interrupt line and assert and deassert each
-// others interrupt "line". Interrupts will not work correctly.
-void
-PciConfigAll::startup()
-{
- bitset<256> intLines;
- PciDev *tempDev;
- uint8_t intline;
-
- for (int x = 0; x < MAX_PCI_DEV; x++) {
- for (int y = 0; y < MAX_PCI_FUNC; y++) {
- if (devices[x][y] != NULL) {
- tempDev = devices[x][y];
- intline = tempDev->interruptLine();
- if (intLines.test(intline))
- warn("Interrupt line %#X is used multiple times"
- "(You probably want to fix this).\n", (uint32_t)intline);
- else
- intLines.set(intline);
- } // devices != NULL
- } // PCI_FUNC
- } // PCI_DEV
-
-}
-
-Tick
-PciConfigAll::read(Packet *pkt)
-{
- assert(pkt->result == Unknown);
- assert(pkt->addr >= pioAddr && pkt->addr < pioAddr + pioSize);
-
- Addr daddr = pkt->addr - pioAddr;
- int device = (daddr >> 11) & 0x1F;
- int func = (daddr >> 8) & 0x7;
- int reg = daddr & 0xFF;
-
- pkt->time += pioDelay;
- pkt->allocate();
-
- DPRINTF(PciConfigAll, "read va=%#x da=%#x size=%d\n", pkt->addr, daddr,
- pkt->size);
-
- switch (pkt->size) {
- case sizeof(uint32_t):
- if (devices[device][func] == NULL)
- pkt->set<uint32_t>(0xFFFFFFFF);
- else
- devices[device][func]->readConfig(reg, pkt->getPtr<uint32_t>());
- break;
- case sizeof(uint16_t):
- if (devices[device][func] == NULL)
- pkt->set<uint16_t>(0xFFFF);
- else
- devices[device][func]->readConfig(reg, pkt->getPtr<uint16_t>());
- break;
- case sizeof(uint8_t):
- if (devices[device][func] == NULL)
- pkt->set<uint8_t>(0xFF);
- else
- devices[device][func]->readConfig(reg, pkt->getPtr<uint8_t>());
- break;
- default:
- panic("invalid access size(?) for PCI configspace!\n");
- }
- pkt->result = Success;
- return pioDelay;
-}
-
-Tick
-PciConfigAll::write(Packet *pkt)
-{
- pkt->time += pioDelay;
-
- assert(pkt->result == Unknown);
- assert(pkt->addr >= pioAddr && pkt->addr < pioAddr + pioSize);
- assert(pkt->size == sizeof(uint8_t) || pkt->size == sizeof(uint16_t) ||
- pkt->size == sizeof(uint32_t));
- Addr daddr = pkt->addr - pioAddr;
-
- int device = (daddr >> 11) & 0x1F;
- int func = (daddr >> 8) & 0x7;
- int reg = daddr & 0xFF;
-
- if (devices[device][func] == NULL)
- panic("Attempting to write to config space on non-existant device\n");
-
- DPRINTF(PciConfigAll, "write - va=%#x size=%d data=%#x\n",
- pkt->addr, pkt->size, pkt->get<uint32_t>());
-
- switch (pkt->size) {
- case sizeof(uint8_t):
- devices[device][func]->writeConfig(reg, pkt->get<uint8_t>());
- break;
- case sizeof(uint16_t):
- devices[device][func]->writeConfig(reg, pkt->get<uint16_t>());
- break;
- case sizeof(uint32_t):
- devices[device][func]->writeConfig(reg, pkt->get<uint32_t>());
- break;
- default:
- panic("invalid pci config write size\n");
- }
- pkt->result = Success;
- return pioDelay;
-}
-
-void
-PciConfigAll::serialize(std::ostream &os)
-{
- /*
- * There is no state associated with this object that requires
- * serialization. The only real state are the device pointers
- * which are all setup by the constructor of the PciDev class
- */
-}
-
-void
-PciConfigAll::unserialize(Checkpoint *cp, const std::string &section)
-{
- /*
- * There is no state associated with this object that requires
- * serialization. The only real state are the device pointers
- * which are all setup by the constructor of the PciDev class
- */
-}
-
-#ifndef DOXYGEN_SHOULD_SKIP_THIS
-
-BEGIN_DECLARE_SIM_OBJECT_PARAMS(PciConfigAll)
-
- Param<Addr> pio_addr;
- Param<Tick> pio_latency;
- SimObjectParam<Platform *> platform;
- SimObjectParam<System *> system;
-
-END_DECLARE_SIM_OBJECT_PARAMS(PciConfigAll)
-
-BEGIN_INIT_SIM_OBJECT_PARAMS(PciConfigAll)
-
- INIT_PARAM(pio_addr, "Device Address"),
- INIT_PARAM(pio_latency, "Programmed IO latency"),
- INIT_PARAM(platform, "platform"),
- INIT_PARAM(system, "system object")
-
-END_INIT_SIM_OBJECT_PARAMS(PciConfigAll)
-
-CREATE_SIM_OBJECT(PciConfigAll)
-{
- BasicPioDevice::Params *p = new BasicPioDevice::Params;
- p->pio_addr = pio_addr;
- p->pio_delay = pio_latency;
- p->platform = platform;
- p->system = system;
- return new PciConfigAll(p);
-}
-
-REGISTER_SIM_OBJECT("PciConfigAll", PciConfigAll)
-
-#endif // DOXYGEN_SHOULD_SKIP_THIS
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