| /* |
| * 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 <sstream> |
| #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/pcidev.hh" |
| #include "dev/pciconfigall.hh" |
| #include "mem/bus/bus.hh" |
| #include "mem/functional/memory_control.hh" |
| #include "sim/builder.hh" |
| #include "sim/param.hh" |
| #include "sim/root.hh" |
| #include "dev/tsunamireg.h" |
| |
| using namespace std; |
| |
| PciDev::PciDev(Params *p) |
| : DmaDevice(p->name, p->plat), _params(p), plat(p->plat), |
| configData(p->configData) |
| { |
| // 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, int size, uint8_t *data) |
| { |
| if (offset >= PCI_DEVICE_SPECIFIC) |
| panic("Device specific PCI config space not implemented!\n"); |
| |
| switch(size) { |
| case sizeof(uint8_t): |
| *data = config.data[offset]; |
| break; |
| case sizeof(uint16_t): |
| *(uint16_t*)data = *(uint16_t*)&config.data[offset]; |
| break; |
| case sizeof(uint32_t): |
| *(uint32_t*)data = *(uint32_t*)&config.data[offset]; |
| break; |
| default: |
| panic("Invalid PCI configuration read size!\n"); |
| } |
| |
| DPRINTF(PCIDEV, |
| "read device: %#x function: %#x register: %#x %d bytes: data: %#x\n", |
| params()->deviceNum, params()->functionNum, offset, size, |
| *(uint32_t*)data); |
| } |
| |
| void |
| PciDev::writeConfig(int offset, int size, const uint8_t *data) |
| { |
| if (offset >= PCI_DEVICE_SPECIFIC) |
| panic("Device specific PCI config space not implemented!\n"); |
| |
| uint8_t &data8 = *(uint8_t*)data; |
| uint16_t &data16 = *(uint16_t*)data; |
| uint32_t &data32 = *(uint32_t*)data; |
| |
| DPRINTF(PCIDEV, |
| "write device: %#x function: %#x reg: %#x size: %d data: %#x\n", |
| params()->deviceNum, params()->functionNum, offset, size, data32); |
| |
| switch (size) { |
| case sizeof(uint8_t): // 1-byte access |
| switch (offset) { |
| case PCI0_INTERRUPT_LINE: |
| config.interruptLine = data8; |
| case PCI_CACHE_LINE_SIZE: |
| config.cacheLineSize = data8; |
| case PCI_LATENCY_TIMER: |
| config.latencyTimer = data8; |
| 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"); |
| } |
| break; |
| |
| case sizeof(uint16_t): // 2-byte access |
| switch (offset) { |
| case PCI_COMMAND: |
| config.command = data16; |
| case PCI_STATUS: |
| config.status = data16; |
| case PCI_CACHE_LINE_SIZE: |
| config.cacheLineSize = data16; |
| break; |
| default: |
| panic("writing to a read only register"); |
| } |
| break; |
| |
| case sizeof(uint32_t): // 4-byte access |
| 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(data32) == 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 { |
| MemoryController *mmu = params()->mmu; |
| |
| config.baseAddr[barnum] = letoh( |
| (letoh(data32) & ~bar_mask) | |
| (letoh(config.baseAddr[barnum]) & bar_mask)); |
| |
| if (letoh(config.baseAddr[barnum]) & ~bar_mask) { |
| base_addr = (letoh(data32) & ~bar_mask) + space_base; |
| base_size = BARSize[barnum]; |
| |
| // It's never been set |
| if (BARAddrs[barnum] == 0) |
| mmu->add_child((FunctionalMemory *)this, |
| RangeSize(base_addr, base_size)); |
| else |
| mmu->update_child((FunctionalMemory *)this, |
| RangeSize(BARAddrs[barnum], base_size), |
| RangeSize(base_addr, base_size)); |
| |
| BARAddrs[barnum] = base_addr; |
| } |
| } |
| break; |
| |
| case PCI0_ROM_BASE_ADDR: |
| if (letoh(data32) == 0xfffffffe) |
| config.expansionROM = htole((uint32_t)0xffffffff); |
| else |
| config.expansionROM = data32; |
| 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 = data16; |
| break; |
| |
| default: |
| DPRINTF(PCIDEV, "Writing to a read only register"); |
| } |
| break; |
| |
| default: |
| panic("invalid access size"); |
| } |
| } |
| |
| 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])); |
| |
| // Add the MMU mappings for the BARs |
| for (int i=0; i < 6; i++) { |
| if (BARAddrs[i] != 0) |
| params()->mmu->add_child(this, RangeSize(BARAddrs[i], BARSize[i])); |
| } |
| } |
| |
| #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 |
