diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/dev/sparc/SConscript | 1 | ||||
| -rw-r--r-- | src/dev/sparc/mm_disk.cc | 137 | ||||
| -rw-r--r-- | src/dev/sparc/mm_disk.hh | 70 | ||||
| -rw-r--r-- | src/python/m5/objects/T1000.py | 6 |
4 files changed, 214 insertions, 0 deletions
diff --git a/src/dev/sparc/SConscript b/src/dev/sparc/SConscript index c37294f0c..63f29846a 100644 --- a/src/dev/sparc/SConscript +++ b/src/dev/sparc/SConscript @@ -38,6 +38,7 @@ sources = [] sources += Split(''' t1000.cc + mm_disk.cc ''') # Convert file names to SCons File objects. This takes care of the diff --git a/src/dev/sparc/mm_disk.cc b/src/dev/sparc/mm_disk.cc new file mode 100644 index 000000000..9057c28be --- /dev/null +++ b/src/dev/sparc/mm_disk.cc @@ -0,0 +1,137 @@ +/* + * Copyright (c) 2006 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 + */ + +/** @file + * This device acts as a disk similar to the memory mapped disk device + * in legion. Any access is translated to an offset in the disk image. + */ + +#include "base/trace.hh" +#include "dev/sparc/mm_disk.hh" +#include "dev/platform.hh" +#include "mem/port.hh" +#include "mem/packet_access.hh" +#include "sim/builder.hh" +#include "sim/byteswap.hh" +#include "sim/system.hh" + +MmDisk::MmDisk(Params *p) + : BasicPioDevice(p), image(p->image), curSector((uint64_t)-1), dirty(false) +{ + memset(&bytes, 0, SectorSize); + pioSize = image->size() * SectorSize; +} + +Tick +MmDisk::read(PacketPtr pkt) +{ + Addr accessAddr; + off_t sector; + off_t bytes_read; + uint16_t *d16; + uint32_t *d32; + uint64_t *d64; + + assert(pkt->result == Packet::Unknown); + assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize); + accessAddr = pkt->getAddr() - pioAddr; + + sector = accessAddr / SectorSize; + + if (sector != curSector) { + if (dirty) + bytes_read = image->write(bytes, curSector); + bytes_read = image->read(bytes, sector); + curSector = sector; + } + switch (pkt->getSize()) { + case sizeof(uint8_t): + pkt->set(bytes[accessAddr % SectorSize]); + break; + case sizeof(uint16_t): + d16 = (uint16_t*)bytes + (accessAddr % SectorSize)/2; + pkt->set(htobe(*d16)); + break; + case sizeof(uint32_t): + d32 = (uint32_t*)bytes + (accessAddr % SectorSize)/4; + pkt->set(htobe(*d32)); + break; + case sizeof(uint64_t): + d64 = (uint64_t*)bytes + (accessAddr % SectorSize)/8; + pkt->set(htobe(*d64)); + break; + default: + panic("Invalid access size\n"); + } + + pkt->result = Packet::Success; + return pioDelay; +} + +Tick +MmDisk::write(PacketPtr pkt) +{ + panic("need to implement\n"); +} + + +BEGIN_DECLARE_SIM_OBJECT_PARAMS(MmDisk) + Param<Addr> pio_addr; + Param<Tick> pio_latency; + Param<Addr> pio_size; + SimObjectParam<Platform *> platform; + SimObjectParam<System *> system; + SimObjectParam<DiskImage *> image; +END_DECLARE_SIM_OBJECT_PARAMS(MmDisk) + +BEGIN_INIT_SIM_OBJECT_PARAMS(MmDisk) + + INIT_PARAM(pio_addr, "Device Address"), + INIT_PARAM(pio_latency, "Programmed IO latency"), + INIT_PARAM(pio_size, "Size of address range"), + INIT_PARAM(platform, "platform"), + INIT_PARAM(system, "system object"), + INIT_PARAM(image, "disk image") + +END_INIT_SIM_OBJECT_PARAMS(MmDisk) + +CREATE_SIM_OBJECT(MmDisk) +{ + MmDisk::Params *p = new MmDisk::Params; + p->name = getInstanceName(); + p->pio_addr = pio_addr; + p->pio_delay = pio_latency; + p->platform = platform; + p->system = system; + p->image = image; + return new MmDisk(p); +} + +REGISTER_SIM_OBJECT("MmDisk", MmDisk) diff --git a/src/dev/sparc/mm_disk.hh b/src/dev/sparc/mm_disk.hh new file mode 100644 index 000000000..0a4626067 --- /dev/null +++ b/src/dev/sparc/mm_disk.hh @@ -0,0 +1,70 @@ +/* + * Copyright (c) 2006 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 + */ + +/** @file + * This device acts as a disk similar to the memory mapped disk device + * in legion. Any access is translated to an offset in the disk image. + */ + +#ifndef __DEV_SPARC_MM_DISK_HH__ +#define __DEV_SPARC_MM_DISK_HH__ + +#include "base/range.hh" +#include "dev/io_device.hh" +#include "dev/disk_image.hh" + +class MmDisk : public BasicPioDevice +{ + private: + DiskImage *image; + off_t curSector; + bool dirty; + union { + uint8_t bytes[SectorSize]; + uint32_t words[SectorSize/4]; + }; + + public: + struct Params : public BasicPioDevice::Params + { + DiskImage *image; + }; + protected: + const Params *params() const { return (const Params*)_params; } + + public: + MmDisk(Params *p); + + virtual Tick read(PacketPtr pkt); + virtual Tick write(PacketPtr pkt); +}; + +#endif //__DEV_SPARC_MM_DISK_HH__ + diff --git a/src/python/m5/objects/T1000.py b/src/python/m5/objects/T1000.py index 79195d976..030f4abd8 100644 --- a/src/python/m5/objects/T1000.py +++ b/src/python/m5/objects/T1000.py @@ -5,6 +5,12 @@ from Uart import Uart8250 from Platform import Platform from SimConsole import SimConsole, ConsoleListener + +class MmDisk(BasicPioDevice): + type = 'MmDisk' + image = Param.DiskImage("Disk Image") + pio_addr = 0x1F40000000 + class T1000(Platform): type = 'T1000' system = Param.System(Parent.any, "system") |