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2012-05-31Bus: Split the bus into a non-coherent and coherent busAndreas Hansson
This patch introduces a class hierarchy of buses, a non-coherent one, and a coherent one, splitting the existing bus functionality. By doing so it also enables further specialisation of the two types of buses. A non-coherent bus connects a number of non-snooping masters and slaves, and routes the request and response packets based on the address. The request packets issued by the master connected to a non-coherent bus could still snoop in caches attached to a coherent bus, as is the case with the I/O bus and memory bus in most system configurations. No snoops will, however, reach any master on the non-coherent bus itself. The non-coherent bus can be used as a template for modelling PCI, PCIe, and non-coherent AMBA and OCP buses, and is typically used for the I/O buses. A coherent bus connects a number of (potentially) snooping masters and slaves, and routes the request and response packets based on the address, and also forwards all requests to the snoopers and deals with the snoop responses. The coherent bus can be used as a template for modelling QPI, HyperTransport, ACE and coherent OCP buses, and is typically used for the L1-to-L2 buses and as the main system interconnect. The configuration scripts are updated to use a NoncoherentBus for all peripheral and I/O buses. A bit of minor tidying up has also been done. --HG-- rename : src/mem/bus.cc => src/mem/coherent_bus.cc rename : src/mem/bus.hh => src/mem/coherent_bus.hh rename : src/mem/bus.cc => src/mem/noncoherent_bus.cc rename : src/mem/bus.hh => src/mem/noncoherent_bus.hh
2012-04-06MEM: Enable multiple distributed generalized memoriesAndreas Hansson
This patch removes the assumption on having on single instance of PhysicalMemory, and enables a distributed memory where the individual memories in the system are each responsible for a single contiguous address range. All memories inherit from an AbstractMemory that encompasses the basic behaviuor of a random access memory, and provides untimed access methods. What was previously called PhysicalMemory is now SimpleMemory, and a subclass of AbstractMemory. All future types of memory controllers should inherit from AbstractMemory. To enable e.g. the atomic CPU and RubyPort to access the now distributed memory, the system has a wrapper class, called PhysicalMemory that is aware of all the memories in the system and their associated address ranges. This class thus acts as an infinitely-fast bus and performs address decoding for these "shortcut" accesses. Each memory can specify that it should not be part of the global address map (used e.g. by the functional memories by some testers). Moreover, each memory can be configured to be reported to the OS configuration table, useful for populating ATAG structures, and any potential ACPI tables. Checkpointing support currently assumes that all memories have the same size and organisation when creating and resuming from the checkpoint. A future patch will enable a more flexible re-organisation. --HG-- rename : src/mem/PhysicalMemory.py => src/mem/AbstractMemory.py rename : src/mem/PhysicalMemory.py => src/mem/SimpleMemory.py rename : src/mem/physical.cc => src/mem/abstract_mem.cc rename : src/mem/physical.hh => src/mem/abstract_mem.hh rename : src/mem/physical.cc => src/mem/simple_mem.cc rename : src/mem/physical.hh => src/mem/simple_mem.hh
2012-03-02CPU: Check that the interrupt controller is created when neededAndreas Hansson
This patch adds a creation-time check to the CPU to ensure that the interrupt controller is created for the cases where it is needed, i.e. if the CPU is not being switched in later and not a checker CPU. The patch also adds the "createInterruptController" call to a number of the regression scripts.
2012-02-13MEM: Introduce the master/slave port roles in the Python classesAndreas Hansson
This patch classifies all ports in Python as either Master or Slave and enforces a binding of master to slave. Conceptually, a master (such as a CPU or DMA port) issues requests, and receives responses, and conversely, a slave (such as a memory or a PIO device) receives requests and sends back responses. Currently there is no differentiation between coherent and non-coherent masters and slaves. The classification as master/slave also involves splitting the dual role port of the bus into a master and slave port and updating all the system assembly scripts to use the appropriate port. Similarly, the interrupt devices have to have their int_port split into a master and slave port. The intdev and its children have minimal changes to facilitate the extra port. Note that this patch does not enforce any port typing in the C++ world, it merely ensures that the Python objects have a notion of the port roles and are connected in an appropriate manner. This check is carried when two ports are connected, e.g. bus.master = memory.port. The following patches will make use of the classifications and specialise the C++ ports into masters and slaves.
2012-01-28SE/FS: Make SE vs. FS mode a runtime parameter.Gabe Black
2012-01-17MEM: Add port proxies instead of non-structural portsAndreas Hansson
Port proxies are used to replace non-structural ports, and thus enable all ports in the system to correspond to a structural entity. This has the advantage of accessing memory through the normal memory subsystem and thus allowing any constellation of distributed memories, address maps, etc. Most accesses are done through the "system port" that is used for loading binaries, debugging etc. For the entities that belong to the CPU, e.g. threads and thread contexts, they wrap the CPU data port in a port proxy. The following replacements are made: FunctionalPort > PortProxy TranslatingPort > SETranslatingPortProxy VirtualPort > FSTranslatingPortProxy --HG-- rename : src/mem/vport.cc => src/mem/fs_translating_port_proxy.cc rename : src/mem/vport.hh => src/mem/fs_translating_port_proxy.hh rename : src/mem/translating_port.cc => src/mem/se_translating_port_proxy.cc rename : src/mem/translating_port.hh => src/mem/se_translating_port_proxy.hh
2011-02-03Config: Keep track of uncached and cached ports separately.Gabe Black
This makes sure that the address ranges requested for caches and uncached ports don't conflict with each other, and that accesses which are always uncached (message signaled interrupts for instance) don't waste time passing through caches.
2007-04-22Update configs to set the CPU clock properly.Kevin Lim
--HG-- extra : convert_revision : 62fec666f987e9a9a441e319458908483cd2c5ff
2006-10-31Remove mem parameter. Now the translating port asks the CPU's dcache's peer ↵Kevin Lim
for its MemObject instead of having to have a paramter for the MemObject. configs/example/fs.py: configs/example/se.py: src/cpu/simple/base.cc: src/cpu/simple/base.hh: src/cpu/simple/timing.cc: src/cpu/simple_thread.cc: src/cpu/simple_thread.hh: src/cpu/thread_state.cc: src/cpu/thread_state.hh: tests/configs/o3-timing-mp.py: tests/configs/o3-timing.py: tests/configs/simple-atomic-mp.py: tests/configs/simple-atomic.py: tests/configs/simple-timing-mp.py: tests/configs/simple-timing.py: tests/configs/tsunami-simple-atomic-dual.py: tests/configs/tsunami-simple-atomic.py: tests/configs/tsunami-simple-timing-dual.py: tests/configs/tsunami-simple-timing.py: No need for mem parameter any more. src/cpu/checker/cpu.cc: Use new constructor for simple thread (no more MemObject parameter). src/cpu/checker/cpu.hh: Remove MemObject parameter. src/cpu/memtest/memtest.hh: Ports now take in their MemObject owner. src/cpu/o3/alpha/cpu_builder.cc: Remove mem parameter. src/cpu/o3/alpha/cpu_impl.hh: Remove memory parameter and clean up handling of TranslatingPort. src/cpu/o3/cpu.cc: src/cpu/o3/cpu.hh: src/cpu/o3/fetch.hh: src/cpu/o3/fetch_impl.hh: src/cpu/o3/mips/cpu_builder.cc: src/cpu/o3/mips/cpu_impl.hh: src/cpu/o3/params.hh: src/cpu/o3/thread_state.hh: src/cpu/ozone/cpu.hh: src/cpu/ozone/cpu_builder.cc: src/cpu/ozone/cpu_impl.hh: src/cpu/ozone/front_end.hh: src/cpu/ozone/front_end_impl.hh: src/cpu/ozone/lw_lsq.hh: src/cpu/ozone/lw_lsq_impl.hh: src/cpu/ozone/simple_params.hh: src/cpu/ozone/thread_state.hh: src/cpu/simple/atomic.cc: Remove memory parameter. --HG-- extra : convert_revision : 43cb44a33b31320d44b69679dcf646c0380d07d3
2006-10-08Implement Alpha LL/SC support for SimpleCPU (Atomic & Timing)Steve Reinhardt
and PhysicalMemory. *No* support for caches or O3CPU. Note that properly setting cpu_id on all CPUs is now required for correct operation. src/arch/SConscript: src/base/traceflags.py: src/cpu/base.hh: src/cpu/simple/atomic.cc: src/cpu/simple/timing.cc: src/cpu/simple/timing.hh: src/mem/physical.cc: src/mem/physical.hh: src/mem/request.hh: src/python/m5/objects/BaseCPU.py: tests/configs/simple-atomic.py: tests/configs/simple-timing.py: tests/configs/tsunami-simple-atomic-dual.py: tests/configs/tsunami-simple-atomic.py: tests/configs/tsunami-simple-timing-dual.py: tests/configs/tsunami-simple-timing.py: Implement Alpha LL/SC support for SimpleCPU (Atomic & Timing) and PhysicalMemory. *No* support for caches or O3CPU. --HG-- extra : convert_revision : 6ce982d44924cc477e049b9adf359818908e72be
2006-08-18Add caches in, fix cpu.mem paramSteve Reinhardt
--HG-- extra : convert_revision : 486283d83786807c72bb4601e4b9613b55d8802c
2006-08-16Finish test clean-up & reorg.Steve Reinhardt
configs/common/FSConfig.py: Add default Machine() param configs/example/fs.py: configs/example/se.py: make it work again src/python/m5/objects/BaseCPU.py: Make mem PhysicalMemory so that a Parent.any proxy works well src/sim/process.cc: Increase default stack size so we don't get an 'increasing stack' message on 'hello world' tests/SConscript: Add full list of current configs. tests/configs/simple-atomic.py: tests/configs/simple-timing.py: don't need SEConfig anymore tests/quick/00.hello/test.py: tests/quick/20.eio-short/test.py: fix tests/run.py: move configs to separate dir --HG-- rename : configs/test/fs.py => configs/example/fs.py rename : configs/test/test.py => configs/example/se.py rename : tests/simple-atomic.py => tests/configs/simple-atomic.py rename : tests/simple-timing.py => tests/configs/simple-timing.py rename : tests/linux-mpboot/ref/alpha/atomic/config.ini => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-atomic-dual/config.ini rename : tests/linux-mpboot/ref/alpha/atomic/config.out => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-atomic-dual/config.out rename : tests/linux-mpboot/ref/alpha/atomic/console.system.sim_console => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-atomic-dual/console.system.sim_console rename : tests/linux-mpboot/ref/alpha/atomic/m5stats.txt => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-atomic-dual/m5stats.txt rename : tests/linux-mpboot/ref/alpha/atomic/stderr => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-atomic-dual/stderr rename : tests/linux-mpboot/ref/alpha/atomic/stdout => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-atomic-dual/stdout rename : tests/linux-boot/ref/alpha/atomic/config.ini => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-atomic/config.ini rename : tests/linux-boot/ref/alpha/atomic/config.out => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-atomic/config.out rename : tests/linux-boot/ref/alpha/atomic/console.system.sim_console => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-atomic/console.system.sim_console rename : tests/linux-boot/ref/alpha/atomic/m5stats.txt => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-atomic/m5stats.txt rename : tests/linux-boot/ref/alpha/atomic/stderr => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-atomic/stderr rename : tests/linux-boot/ref/alpha/atomic/stdout => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-atomic/stdout rename : tests/linux-mpboot/ref/alpha/timing/config.ini => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-timing-dual/config.ini rename : tests/linux-mpboot/ref/alpha/timing/config.out => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-timing-dual/config.out rename : tests/linux-mpboot/ref/alpha/timing/console.system.sim_console => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-timing-dual/console.system.sim_console rename : tests/linux-mpboot/ref/alpha/timing/m5stats.txt => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-timing-dual/m5stats.txt rename : tests/linux-mpboot/ref/alpha/timing/stderr => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-timing-dual/stderr rename : tests/linux-mpboot/ref/alpha/timing/stdout => tests/quick/10.linux-boot/ref/alpha/linux/tsunami-simple-timing-dual/stdout rename : tests/test-progs/hello/bin/mips/linux/hello_mips => tests/test-progs/hello/bin/mips/linux/hello rename : tests/test-progs/hello/bin/sparc/bin => tests/test-progs/hello/bin/sparc/linux/hello extra : convert_revision : d68ee6d7eefa7ba57370f3fb3c3589f86a6ea6b4