389 lines
14 KiB
C++
389 lines
14 KiB
C++
/*
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* Copyright (c) 2003 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* @file
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* A single PCI device configuration space entry.
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*/
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#include <list>
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#include <sstream>
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#include <string>
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#include <vector>
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#include "base/inifile.hh"
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#include "base/misc.hh"
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#include "base/str.hh" // for to_number
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#include "base/trace.hh"
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#include "dev/pciareg.h"
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#include "dev/pcidev.hh"
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#include "dev/pciconfigall.hh"
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#include "mem/functional_mem/memory_control.hh"
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#include "sim/builder.hh"
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#include "sim/param.hh"
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#include "sim/universe.hh"
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#include "dev/tsunamireg.h"
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using namespace std;
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PciDev::PciDev(const string &name, MemoryController *mmu, PciConfigAll *cf,
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PciConfigData *cd, uint32_t bus, uint32_t dev, uint32_t func)
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: DmaDevice(name), mmu(mmu), configSpace(cf), configData(cd), busNum(bus),
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deviceNum(dev), functionNum(func)
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{
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// copy the config data from the PciConfigData object
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if (cd) {
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memcpy(config.data, cd->config.data, sizeof(config.data));
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memcpy(BARSize, cd->BARSize, sizeof(BARSize));
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memcpy(BARAddrs, cd->BARAddrs, sizeof(BARAddrs));
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} else
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panic("NULL pointer to configuration data");
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// Setup pointer in config space to point to this entry
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if (cf->devices[dev][func] != NULL)
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panic("Two PCI devices occuping same dev: %#x func: %#x", dev, func);
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else
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cf->devices[dev][func] = this;
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}
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void
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PciDev::ReadConfig(int offset, int size, uint8_t *data)
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{
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switch(size) {
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case sizeof(uint32_t):
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memcpy((uint32_t*)data, config.data + offset, sizeof(uint32_t));
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DPRINTF(PCIDEV,
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"read device: %#x function: %#x register: %#x data: %#x\n",
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deviceNum, functionNum, offset,
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*(uint32_t*)(config.data + offset));
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break;
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case sizeof(uint16_t):
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memcpy((uint16_t*)data, config.data + offset, sizeof(uint16_t));
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DPRINTF(PCIDEV,
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"read device: %#x function: %#x register: %#x data: %#x\n",
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deviceNum, functionNum, offset,
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*(uint16_t*)(config.data + offset));
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break;
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case sizeof(uint8_t):
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memcpy((uint8_t*)data, config.data + offset, sizeof(uint8_t));
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DPRINTF(PCIDEV,
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"read device: %#x function: %#x register: %#x data: %#x\n",
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deviceNum, functionNum, offset,
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(uint16_t)(*(uint8_t*)(config.data + offset)));
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break;
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default:
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panic("Invalid Read Size");
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}
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}
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void
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PciDev::WriteConfig(int offset, int size, uint32_t data)
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{
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uint32_t barnum;
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union {
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uint8_t byte_value;
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uint16_t half_value;
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uint32_t word_value;
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};
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word_value = data;
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DPRINTF(PCIDEV,
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"write device: %#x function: %#x reg: %#x size: %#x data: %#x\n",
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deviceNum, functionNum, offset, size, word_value);
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barnum = (offset - PCI0_BASE_ADDR0) >> 2;
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switch (size) {
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case sizeof(uint8_t): // 1-byte access
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switch (offset) {
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case PCI0_INTERRUPT_LINE:
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case PCI_CACHE_LINE_SIZE:
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case PCI_LATENCY_TIMER:
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*(uint8_t *)&config.data[offset] = byte_value;
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break;
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default:
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panic("writing to a read only register");
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}
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break;
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case sizeof(uint16_t): // 2-byte access
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switch (offset) {
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case PCI_COMMAND:
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case PCI_STATUS:
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case PCI_CACHE_LINE_SIZE:
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*(uint16_t *)&config.data[offset] = half_value;
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break;
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default:
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panic("writing to a read only register");
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}
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break;
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case sizeof(uint16_t)+1: // 3-byte access
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panic("invalid access size");
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case sizeof(uint32_t): // 4-byte access
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switch (offset) {
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case PCI0_BASE_ADDR0:
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case PCI0_BASE_ADDR1:
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case PCI0_BASE_ADDR2:
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case PCI0_BASE_ADDR3:
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case PCI0_BASE_ADDR4:
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case PCI0_BASE_ADDR5:
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// Writing 0xffffffff to a BAR tells the card to set the
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// value of the bar
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// to size of memory it needs
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if (word_value == 0xffffffff) {
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// This is I/O Space, bottom two bits are read only
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if (config.data[offset] & 0x1) {
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*(uint32_t *)&config.data[offset] =
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~(BARSize[barnum] - 1) |
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(config.data[offset] & 0x3);
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} else {
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// This is memory space, bottom four bits are read only
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*(uint32_t *)&config.data[offset] =
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~(BARSize[barnum] - 1) |
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(config.data[offset] & 0xF);
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}
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} else {
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// This is I/O Space, bottom two bits are read only
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if(config.data[offset] & 0x1) {
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*(uint32_t *)&config.data[offset] = (word_value & ~0x3) |
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(config.data[offset] & 0x3);
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if (word_value & ~0x1) {
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Addr base_addr = (word_value & ~0x1) + TSUNAMI_PCI0_IO;
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Addr base_size = BARSize[barnum]-1;
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// It's never been set
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if (BARAddrs[barnum] == 0)
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mmu->add_child((FunctionalMemory *)this,
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Range<Addr>(base_addr,
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base_addr + base_size));
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else
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mmu->update_child((FunctionalMemory *)this,
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Range<Addr>(BARAddrs[barnum],
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BARAddrs[barnum] +
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base_size),
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Range<Addr>(base_addr,
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base_addr +
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base_size));
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BARAddrs[barnum] = base_addr;
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}
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} else {
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// This is memory space, bottom four bits are read only
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*(uint32_t *)&config.data[offset] = (word_value & ~0xF) |
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(config.data[offset] & 0xF);
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if (word_value & ~0x3) {
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Addr base_addr = (word_value & ~0x3) +
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TSUNAMI_PCI0_MEMORY;
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Addr base_size = BARSize[barnum]-1;
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// It's never been set
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if (BARAddrs[barnum] == 0)
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mmu->add_child((FunctionalMemory *)this,
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Range<Addr>(base_addr,
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base_addr + base_size));
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else
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mmu->update_child((FunctionalMemory *)this,
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Range<Addr>(BARAddrs[barnum],
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BARAddrs[barnum] +
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base_size),
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Range<Addr>(base_addr,
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base_addr +
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base_size));
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BARAddrs[barnum] = base_addr;
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}
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}
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}
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break;
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case PCI0_ROM_BASE_ADDR:
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if (word_value == 0xfffffffe)
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*(uint32_t *)&config.data[offset] = 0xffffffff;
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else
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*(uint32_t *)&config.data[offset] = word_value;
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break;
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case PCI_COMMAND:
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// This could also clear some of the error bits in the Status
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// register. However they should never get set, so lets ignore
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// it for now
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*(uint16_t *)&config.data[offset] = half_value;
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break;
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default:
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panic("writing to a read only register");
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}
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break;
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}
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}
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void
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PciDev::serialize(ostream &os)
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{
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SERIALIZE_ARRAY(config.data, 64);
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}
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void
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PciDev::unserialize(Checkpoint *cp, const std::string §ion)
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{
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UNSERIALIZE_ARRAY(config.data, 64);
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}
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#ifndef DOXYGEN_SHOULD_SKIP_THIS
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BEGIN_DECLARE_SIM_OBJECT_PARAMS(PciConfigData)
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Param<int> VendorID;
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Param<int> DeviceID;
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Param<int> Command;
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Param<int> Status;
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Param<int> Revision;
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Param<int> ProgIF;
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Param<int> SubClassCode;
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Param<int> ClassCode;
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Param<int> CacheLineSize;
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Param<int> LatencyTimer;
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Param<int> HeaderType;
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Param<int> BIST;
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Param<uint32_t> BAR0;
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Param<uint32_t> BAR1;
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Param<uint32_t> BAR2;
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Param<uint32_t> BAR3;
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Param<uint32_t> BAR4;
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Param<uint32_t> BAR5;
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Param<uint32_t> CardbusCIS;
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Param<int> SubsystemVendorID;
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Param<int> SubsystemID;
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Param<uint32_t> ExpansionROM;
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Param<int> InterruptLine;
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Param<int> InterruptPin;
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Param<int> MinimumGrant;
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Param<int> MaximumLatency;
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Param<uint32_t> BAR0Size;
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Param<uint32_t> BAR1Size;
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Param<uint32_t> BAR2Size;
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Param<uint32_t> BAR3Size;
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Param<uint32_t> BAR4Size;
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Param<uint32_t> BAR5Size;
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END_DECLARE_SIM_OBJECT_PARAMS(PciConfigData)
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BEGIN_INIT_SIM_OBJECT_PARAMS(PciConfigData)
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INIT_PARAM(VendorID, "Vendor ID"),
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INIT_PARAM(DeviceID, "Device ID"),
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INIT_PARAM_DFLT(Command, "Command Register", 0x00),
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INIT_PARAM_DFLT(Status, "Status Register", 0x00),
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INIT_PARAM_DFLT(Revision, "Device Revision", 0x00),
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INIT_PARAM_DFLT(ProgIF, "Programming Interface", 0x00),
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INIT_PARAM(SubClassCode, "Sub-Class Code"),
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INIT_PARAM(ClassCode, "Class Code"),
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INIT_PARAM_DFLT(CacheLineSize, "System Cacheline Size", 0x00),
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INIT_PARAM_DFLT(LatencyTimer, "PCI Latency Timer", 0x00),
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INIT_PARAM_DFLT(HeaderType, "PCI Header Type", 0x00),
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INIT_PARAM_DFLT(BIST, "Built In Self Test", 0x00),
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INIT_PARAM_DFLT(BAR0, "Base Address Register 0", 0x00),
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INIT_PARAM_DFLT(BAR1, "Base Address Register 1", 0x00),
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INIT_PARAM_DFLT(BAR2, "Base Address Register 2", 0x00),
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INIT_PARAM_DFLT(BAR3, "Base Address Register 3", 0x00),
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INIT_PARAM_DFLT(BAR4, "Base Address Register 4", 0x00),
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INIT_PARAM_DFLT(BAR5, "Base Address Register 5", 0x00),
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INIT_PARAM_DFLT(CardbusCIS, "Cardbus Card Information Structure", 0x00),
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INIT_PARAM_DFLT(SubsystemVendorID, "Subsystem Vendor ID", 0x00),
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INIT_PARAM_DFLT(SubsystemID, "Subsystem ID", 0x00),
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INIT_PARAM_DFLT(ExpansionROM, "Expansion ROM Base Address Register", 0x00),
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INIT_PARAM(InterruptLine, "Interrupt Line Register"),
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INIT_PARAM(InterruptPin, "Interrupt Pin Register"),
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INIT_PARAM_DFLT(MinimumGrant, "Minimum Grant", 0x00),
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INIT_PARAM_DFLT(MaximumLatency, "Maximum Latency", 0x00),
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INIT_PARAM_DFLT(BAR0Size, "Base Address Register 0 Size", 0x00),
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INIT_PARAM_DFLT(BAR1Size, "Base Address Register 1 Size", 0x00),
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INIT_PARAM_DFLT(BAR2Size, "Base Address Register 2 Size", 0x00),
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INIT_PARAM_DFLT(BAR3Size, "Base Address Register 3 Size", 0x00),
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INIT_PARAM_DFLT(BAR4Size, "Base Address Register 4 Size", 0x00),
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INIT_PARAM_DFLT(BAR5Size, "Base Address Register 5 Size", 0x00)
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END_INIT_SIM_OBJECT_PARAMS(PciConfigData)
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CREATE_SIM_OBJECT(PciConfigData)
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{
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PciConfigData *data = new PciConfigData(getInstanceName());
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data->config.hdr.vendor = VendorID;
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data->config.hdr.device = DeviceID;
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data->config.hdr.command = Command;
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data->config.hdr.status = Status;
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data->config.hdr.revision = Revision;
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data->config.hdr.progIF = ProgIF;
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data->config.hdr.subClassCode = SubClassCode;
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data->config.hdr.classCode = ClassCode;
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data->config.hdr.cacheLineSize = CacheLineSize;
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data->config.hdr.latencyTimer = LatencyTimer;
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data->config.hdr.headerType = HeaderType;
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data->config.hdr.bist = BIST;
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data->config.hdr.pci0.baseAddr0 = BAR0;
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data->config.hdr.pci0.baseAddr1 = BAR1;
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data->config.hdr.pci0.baseAddr2 = BAR2;
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data->config.hdr.pci0.baseAddr3 = BAR3;
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data->config.hdr.pci0.baseAddr4 = BAR4;
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data->config.hdr.pci0.baseAddr5 = BAR5;
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data->config.hdr.pci0.cardbusCIS = CardbusCIS;
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data->config.hdr.pci0.subsystemVendorID = SubsystemVendorID;
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data->config.hdr.pci0.subsystemID = SubsystemVendorID;
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data->config.hdr.pci0.expansionROM = ExpansionROM;
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data->config.hdr.pci0.interruptLine = InterruptLine;
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data->config.hdr.pci0.interruptPin = InterruptPin;
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data->config.hdr.pci0.minimumGrant = MinimumGrant;
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data->config.hdr.pci0.maximumLatency = MaximumLatency;
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data->BARSize[0] = BAR0Size;
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data->BARSize[1] = BAR1Size;
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data->BARSize[2] = BAR2Size;
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data->BARSize[3] = BAR3Size;
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data->BARSize[4] = BAR4Size;
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data->BARSize[5] = BAR5Size;
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return data;
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}
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REGISTER_SIM_OBJECT("PciConfigData", PciConfigData)
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#endif // DOXYGEN_SHOULD_SKIP_THIS
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