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7 commits

Author SHA1 Message Date
Andreas Hansson
5a9a743cfc MEM: Introduce the master/slave port roles in the Python classes
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.
2012-02-13 06:43:09 -05:00
Gabe Black
ec20ee2f7c SE/FS: Make SE vs. FS mode a runtime parameter. 2012-01-28 07:24:34 -08:00
Andreas Hansson
2208ea049f MEM: Make the bus bridge unidirectional and fixed address range
This patch makes the bus bridge uni-directional and specialises the
bus ports to be a master port and a slave port. This greatly
simplifies the assumptions on both sides as either port only has to
deal with requests or responses. The following patches introduce the
notion of master and slave ports, and would not be possible without
this split of responsibilities.

In making the bridge unidirectional, the address range mechanism of
the bridge is also changed. For the cases where communication is
taking place both ways, an additional bridge is needed. This causes
issues with the existing mechanism, as the busses cannot determine
when to stop iterating the address updates from the two bridges. To
avoid this issue, and also greatly simplify the specification, the
bridge now has a fixed set of address ranges, specified at creation
time.
2012-01-17 12:55:09 -06:00
Gabe Black
00f24ae92c Config: Keep track of uncached and cached ports separately.
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.
2011-02-03 20:23:00 -08:00
Nathan Binkert
9a8cb7db7e python: Move more code into m5.util allow SCons to use that code.
Get rid of misc.py and just stick misc things in __init__.py
Move utility functions out of SCons files and into m5.util
Move utility type stuff from m5/__init__.py to m5/util/__init__.py
Remove buildEnv from m5 and allow access only from m5.defines
Rename AddToPath to addToPath while we're moving it to m5.util
Rename read_command to readCommand while we're moving it
Rename compare_versions to compareVersions while we're moving it.

--HG--
rename : src/python/m5/convert.py => src/python/m5/util/convert.py
rename : src/python/m5/smartdict.py => src/python/m5/util/smartdict.py
2009-09-22 15:24:16 -07:00
Lisa Hsu
ed50763135 change this to be a quick one so that it's in the regressions every night - it's only maybe 15 min. long.
tests/configs/twosys-tsunami-simple-atomic.py:
    don't need this import

--HG--
rename : tests/long/80.netperf-stream/ref/alpha/linux/twosys-tsunami-simple-atomic/config.ini => tests/quick/80.netperf-stream/ref/alpha/linux/twosys-tsunami-simple-atomic/config.ini
rename : tests/long/80.netperf-stream/ref/alpha/linux/twosys-tsunami-simple-atomic/config.out => tests/quick/80.netperf-stream/ref/alpha/linux/twosys-tsunami-simple-atomic/config.out
rename : tests/long/80.netperf-stream/ref/alpha/linux/twosys-tsunami-simple-atomic/console.drivesys.sim_console => tests/quick/80.netperf-stream/ref/alpha/linux/twosys-tsunami-simple-atomic/console.drivesys.sim_console
rename : tests/long/80.netperf-stream/ref/alpha/linux/twosys-tsunami-simple-atomic/console.testsys.sim_console => tests/quick/80.netperf-stream/ref/alpha/linux/twosys-tsunami-simple-atomic/console.testsys.sim_console
rename : tests/long/80.netperf-stream/ref/alpha/linux/twosys-tsunami-simple-atomic/m5stats.txt => tests/quick/80.netperf-stream/ref/alpha/linux/twosys-tsunami-simple-atomic/m5stats.txt
rename : tests/long/80.netperf-stream/ref/alpha/linux/twosys-tsunami-simple-atomic/stderr => tests/quick/80.netperf-stream/ref/alpha/linux/twosys-tsunami-simple-atomic/stderr
rename : tests/long/80.netperf-stream/ref/alpha/linux/twosys-tsunami-simple-atomic/stdout => tests/quick/80.netperf-stream/ref/alpha/linux/twosys-tsunami-simple-atomic/stdout
rename : tests/long/80.netperf-stream/test.py => tests/quick/80.netperf-stream/test.py
extra : convert_revision : 68497b2ef8b21590cb6c636485703e46dc616513
2006-12-01 13:51:49 -05:00
Lisa Hsu
161b8d1a23 add a simple netperf-stream test to the long tests.
tests/SConscript:
    add a new configuration for two-system tests (atomic simple only)

--HG--
extra : convert_revision : 16c260ab16f38779fe17b1cab18f36d5c7a70846
2006-12-01 01:24:01 -05:00