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Diffstat (limited to 'src/dev/pcidev.cc')
-rw-r--r-- | src/dev/pcidev.cc | 386 |
1 files changed, 386 insertions, 0 deletions
diff --git a/src/dev/pcidev.cc b/src/dev/pcidev.cc new file mode 100644 index 000000000..76392ccfe --- /dev/null +++ b/src/dev/pcidev.cc @@ -0,0 +1,386 @@ +/* + * 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 + * A single PCI device configuration space entry. + */ + +#include <list> +#include <string> +#include <vector> + +#include "base/inifile.hh" +#include "base/misc.hh" +#include "base/str.hh" // for to_number +#include "base/trace.hh" +#include "dev/pciconfigall.hh" +#include "dev/pcidev.hh" +#include "dev/tsunamireg.h" +#include "mem/packet.hh" +#include "sim/builder.hh" +#include "sim/byteswap.hh" +#include "sim/param.hh" +#include "sim/root.hh" + +using namespace std; + +PciDev::PciDev(Params *p) + : DmaDevice(p), plat(p->platform), configData(p->configData), + pioDelay(p->pio_delay) +{ + // copy the config data from the PciConfigData object + if (configData) { + memcpy(config.data, configData->config.data, sizeof(config.data)); + memcpy(BARSize, configData->BARSize, sizeof(BARSize)); + memcpy(BARAddrs, configData->BARAddrs, sizeof(BARAddrs)); + } else + panic("NULL pointer to configuration data"); + + // Setup pointer in config space to point to this entry + if (p->configSpace->deviceExists(p->deviceNum, p->functionNum)) + panic("Two PCI devices occuping same dev: %#x func: %#x", + p->deviceNum, p->functionNum); + else + p->configSpace->registerDevice(p->deviceNum, p->functionNum, this); +} + +void +PciDev::readConfig(int offset, uint8_t *data) +{ + if (offset >= PCI_DEVICE_SPECIFIC) + panic("Device specific PCI config space not implemented!\n"); + + *data = config.data[offset]; + + DPRINTF(PCIDEV, + "read device: %#x function: %#x register: %#x 1 bytes: data: %#x\n", + params()->deviceNum, params()->functionNum, offset, *data); +} + +void +PciDev::addressRanges(AddrRangeList &range_list) +{ + int x = 0; + range_list.clear(); + for (x = 0; x < 6; x++) + if (BARAddrs[x] != 0) + range_list.push_back(RangeSize(BARAddrs[x],BARSize[x])); +} + +void +PciDev::readConfig(int offset, uint16_t *data) +{ + if (offset >= PCI_DEVICE_SPECIFIC) + panic("Device specific PCI config space not implemented!\n"); + + *data = *(uint16_t*)&config.data[offset]; + + DPRINTF(PCIDEV, + "read device: %#x function: %#x register: %#x 2 bytes: data: %#x\n", + params()->deviceNum, params()->functionNum, offset, *data); +} + +void +PciDev::readConfig(int offset, uint32_t *data) +{ + if (offset >= PCI_DEVICE_SPECIFIC) + panic("Device specific PCI config space not implemented!\n"); + + *data = *(uint32_t*)&config.data[offset]; + + DPRINTF(PCIDEV, + "read device: %#x function: %#x register: %#x 4 bytes: data: %#x\n", + params()->deviceNum, params()->functionNum, offset, *data); +} + + +void +PciDev::writeConfig(int offset, const uint8_t data) +{ + if (offset >= PCI_DEVICE_SPECIFIC) + panic("Device specific PCI config space not implemented!\n"); + + DPRINTF(PCIDEV, + "write device: %#x function: %#x reg: %#x size: 1 data: %#x\n", + params()->deviceNum, params()->functionNum, offset, data); + + switch (offset) { + case PCI0_INTERRUPT_LINE: + config.interruptLine = data; + case PCI_CACHE_LINE_SIZE: + config.cacheLineSize = data; + case PCI_LATENCY_TIMER: + config.latencyTimer = data; + break; + /* Do nothing for these read-only registers */ + case PCI0_INTERRUPT_PIN: + case PCI0_MINIMUM_GRANT: + case PCI0_MAXIMUM_LATENCY: + case PCI_CLASS_CODE: + case PCI_REVISION_ID: + break; + default: + panic("writing to a read only register"); + } +} + +void +PciDev::writeConfig(int offset, const uint16_t data) +{ + if (offset >= PCI_DEVICE_SPECIFIC) + panic("Device specific PCI config space not implemented!\n"); + + DPRINTF(PCIDEV, + "write device: %#x function: %#x reg: %#x size: 2 data: %#x\n", + params()->deviceNum, params()->functionNum, offset, data); + + switch (offset) { + case PCI_COMMAND: + config.command = data; + case PCI_STATUS: + config.status = data; + case PCI_CACHE_LINE_SIZE: + config.cacheLineSize = data; + break; + default: + panic("writing to a read only register"); + } +} + + +void +PciDev::writeConfig(int offset, const uint32_t data) +{ + if (offset >= PCI_DEVICE_SPECIFIC) + panic("Device specific PCI config space not implemented!\n"); + + DPRINTF(PCIDEV, + "write device: %#x function: %#x reg: %#x size: 4 data: %#x\n", + params()->deviceNum, params()->functionNum, offset, data); + + switch (offset) { + case PCI0_BASE_ADDR0: + case PCI0_BASE_ADDR1: + case PCI0_BASE_ADDR2: + case PCI0_BASE_ADDR3: + case PCI0_BASE_ADDR4: + case PCI0_BASE_ADDR5: + + uint32_t barnum, bar_mask; + Addr base_addr, base_size, space_base; + + barnum = BAR_NUMBER(offset); + + if (BAR_IO_SPACE(letoh(config.baseAddr[barnum]))) { + bar_mask = BAR_IO_MASK; + space_base = TSUNAMI_PCI0_IO; + } else { + bar_mask = BAR_MEM_MASK; + space_base = TSUNAMI_PCI0_MEMORY; + } + + // Writing 0xffffffff to a BAR tells the card to set the + // value of the bar to size of memory it needs + if (letoh(data) == 0xffffffff) { + // This is I/O Space, bottom two bits are read only + + config.baseAddr[barnum] = letoh( + (~(BARSize[barnum] - 1) & ~bar_mask) | + (letoh(config.baseAddr[barnum]) & bar_mask)); + } else { + config.baseAddr[barnum] = letoh( + (letoh(data) & ~bar_mask) | + (letoh(config.baseAddr[barnum]) & bar_mask)); + + if (letoh(config.baseAddr[barnum]) & ~bar_mask) { + base_addr = (letoh(data) & ~bar_mask) + space_base; + base_size = BARSize[barnum]; + BARAddrs[barnum] = base_addr; + + pioPort->sendStatusChange(Port::RangeChange); + } + } + break; + + case PCI0_ROM_BASE_ADDR: + if (letoh(data) == 0xfffffffe) + config.expansionROM = htole((uint32_t)0xffffffff); + else + config.expansionROM = data; + break; + + case PCI_COMMAND: + // This could also clear some of the error bits in the Status + // register. However they should never get set, so lets ignore + // it for now + config.command = data; + break; + + default: + DPRINTF(PCIDEV, "Writing to a read only register"); + } +} + +void +PciDev::serialize(ostream &os) +{ + SERIALIZE_ARRAY(BARSize, sizeof(BARSize) / sizeof(BARSize[0])); + SERIALIZE_ARRAY(BARAddrs, sizeof(BARAddrs) / sizeof(BARAddrs[0])); + SERIALIZE_ARRAY(config.data, sizeof(config.data) / sizeof(config.data[0])); +} + +void +PciDev::unserialize(Checkpoint *cp, const std::string §ion) +{ + UNSERIALIZE_ARRAY(BARSize, sizeof(BARSize) / sizeof(BARSize[0])); + UNSERIALIZE_ARRAY(BARAddrs, sizeof(BARAddrs) / sizeof(BARAddrs[0])); + UNSERIALIZE_ARRAY(config.data, + sizeof(config.data) / sizeof(config.data[0])); +} + +#ifndef DOXYGEN_SHOULD_SKIP_THIS + +BEGIN_DECLARE_SIM_OBJECT_PARAMS(PciConfigData) + + Param<uint16_t> VendorID; + Param<uint16_t> DeviceID; + Param<uint16_t> Command; + Param<uint16_t> Status; + Param<uint8_t> Revision; + Param<uint8_t> ProgIF; + Param<uint8_t> SubClassCode; + Param<uint8_t> ClassCode; + Param<uint8_t> CacheLineSize; + Param<uint8_t> LatencyTimer; + Param<uint8_t> HeaderType; + Param<uint8_t> BIST; + Param<uint32_t> BAR0; + Param<uint32_t> BAR1; + Param<uint32_t> BAR2; + Param<uint32_t> BAR3; + Param<uint32_t> BAR4; + Param<uint32_t> BAR5; + Param<uint32_t> CardbusCIS; + Param<uint16_t> SubsystemVendorID; + Param<uint16_t> SubsystemID; + Param<uint32_t> ExpansionROM; + Param<uint8_t> InterruptLine; + Param<uint8_t> InterruptPin; + Param<uint8_t> MinimumGrant; + Param<uint8_t> MaximumLatency; + Param<uint32_t> BAR0Size; + Param<uint32_t> BAR1Size; + Param<uint32_t> BAR2Size; + Param<uint32_t> BAR3Size; + Param<uint32_t> BAR4Size; + Param<uint32_t> BAR5Size; + +END_DECLARE_SIM_OBJECT_PARAMS(PciConfigData) + +BEGIN_INIT_SIM_OBJECT_PARAMS(PciConfigData) + + INIT_PARAM(VendorID, "Vendor ID"), + INIT_PARAM(DeviceID, "Device ID"), + INIT_PARAM_DFLT(Command, "Command Register", 0x00), + INIT_PARAM_DFLT(Status, "Status Register", 0x00), + INIT_PARAM_DFLT(Revision, "Device Revision", 0x00), + INIT_PARAM_DFLT(ProgIF, "Programming Interface", 0x00), + INIT_PARAM(SubClassCode, "Sub-Class Code"), + INIT_PARAM(ClassCode, "Class Code"), + INIT_PARAM_DFLT(CacheLineSize, "System Cacheline Size", 0x00), + INIT_PARAM_DFLT(LatencyTimer, "PCI Latency Timer", 0x00), + INIT_PARAM_DFLT(HeaderType, "PCI Header Type", 0x00), + INIT_PARAM_DFLT(BIST, "Built In Self Test", 0x00), + INIT_PARAM_DFLT(BAR0, "Base Address Register 0", 0x00), + INIT_PARAM_DFLT(BAR1, "Base Address Register 1", 0x00), + INIT_PARAM_DFLT(BAR2, "Base Address Register 2", 0x00), + INIT_PARAM_DFLT(BAR3, "Base Address Register 3", 0x00), + INIT_PARAM_DFLT(BAR4, "Base Address Register 4", 0x00), + INIT_PARAM_DFLT(BAR5, "Base Address Register 5", 0x00), + INIT_PARAM_DFLT(CardbusCIS, "Cardbus Card Information Structure", 0x00), + INIT_PARAM_DFLT(SubsystemVendorID, "Subsystem Vendor ID", 0x00), + INIT_PARAM_DFLT(SubsystemID, "Subsystem ID", 0x00), + INIT_PARAM_DFLT(ExpansionROM, "Expansion ROM Base Address Register", 0x00), + INIT_PARAM(InterruptLine, "Interrupt Line Register"), + INIT_PARAM(InterruptPin, "Interrupt Pin Register"), + INIT_PARAM_DFLT(MinimumGrant, "Minimum Grant", 0x00), + INIT_PARAM_DFLT(MaximumLatency, "Maximum Latency", 0x00), + INIT_PARAM_DFLT(BAR0Size, "Base Address Register 0 Size", 0x00), + INIT_PARAM_DFLT(BAR1Size, "Base Address Register 1 Size", 0x00), + INIT_PARAM_DFLT(BAR2Size, "Base Address Register 2 Size", 0x00), + INIT_PARAM_DFLT(BAR3Size, "Base Address Register 3 Size", 0x00), + INIT_PARAM_DFLT(BAR4Size, "Base Address Register 4 Size", 0x00), + INIT_PARAM_DFLT(BAR5Size, "Base Address Register 5 Size", 0x00) + +END_INIT_SIM_OBJECT_PARAMS(PciConfigData) + +CREATE_SIM_OBJECT(PciConfigData) +{ + PciConfigData *data = new PciConfigData(getInstanceName()); + + data->config.vendor = htole(VendorID); + data->config.device = htole(DeviceID); + data->config.command = htole(Command); + data->config.status = htole(Status); + data->config.revision = htole(Revision); + data->config.progIF = htole(ProgIF); + data->config.subClassCode = htole(SubClassCode); + data->config.classCode = htole(ClassCode); + data->config.cacheLineSize = htole(CacheLineSize); + data->config.latencyTimer = htole(LatencyTimer); + data->config.headerType = htole(HeaderType); + data->config.bist = htole(BIST); + + data->config.baseAddr0 = htole(BAR0); + data->config.baseAddr1 = htole(BAR1); + data->config.baseAddr2 = htole(BAR2); + data->config.baseAddr3 = htole(BAR3); + data->config.baseAddr4 = htole(BAR4); + data->config.baseAddr5 = htole(BAR5); + data->config.cardbusCIS = htole(CardbusCIS); + data->config.subsystemVendorID = htole(SubsystemVendorID); + data->config.subsystemID = htole(SubsystemVendorID); + data->config.expansionROM = htole(ExpansionROM); + data->config.interruptLine = htole(InterruptLine); + data->config.interruptPin = htole(InterruptPin); + data->config.minimumGrant = htole(MinimumGrant); + data->config.maximumLatency = htole(MaximumLatency); + + data->BARSize[0] = BAR0Size; + data->BARSize[1] = BAR1Size; + data->BARSize[2] = BAR2Size; + data->BARSize[3] = BAR3Size; + data->BARSize[4] = BAR4Size; + data->BARSize[5] = BAR5Size; + + return data; +} + +REGISTER_SIM_OBJECT("PciConfigData", PciConfigData) + +#endif // DOXYGEN_SHOULD_SKIP_THIS |