riscv/rocket-chip
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219 Commits

Author SHA1 Message Date
Howard Mao
5e4a02038c move FPGA AXI to HTIF converter into Chisel module 2016-02-19 13:53:31 -08:00
Palmer Dabbelt
926efd0cab Allow the number of memory channels to be picked at runtime 
We're building a chip with 8 memory channels.  Since this will require a
complicated test setup we want to also be able to bring up the chip with fewer
memory channels.  This commit adds a SCR that controls the number of active
memory channels on a chip.  Toggling this SCR will scramble memory and drop
Nasti messages, so it's only possible to change while the chip is booting.

By default this just adds a 1-bit SCR, which essentially no extra logic.

When multiple memory channel configurations are enabled at elaboration time, a
NastiMemoryInterconnect is generated for each channel configuration.  The
number of outstanding misses is increased to coorespond to the maximum number
of banks per memory channel (added as a parameter), which I believe is
necessary to avoid deadlock in the memory system.

A configuration is added that supports 8 memory channels but has only 1 enabled
by default.
 2016-02-17 15:23:30 -08:00
Palmer Dabbelt
db9de94588 Generate and use SCR address header files 
This uses the new SCRFile changes to generate a header file containing a list
of all the SCRs in a core to remove the magic constant "63" (the HTIF clock
divider control register) and replace it with a generated number (which is
still 63).
 2016-02-17 15:23:18 -08:00
Christopher Celio
c1b4d9372f Revert "add new parameters for new SCR file" 
This reverts commit 4dad5b8b32.

The commit breaks the build.
 2016-02-13 04:02:20 -08:00
Christopher Celio
6c6bbca92a Revert "use singleton for global" 
This reverts commit 4d0f941de3.

The commit breaks the build.
 2016-02-13 03:56:47 -08:00
John Wright
4d0f941de3 use singleton for global 2016-02-13 00:56:11 -08:00
John Wright
4dad5b8b32 add new parameters for new SCR file 2016-02-12 18:24:12 -08:00
Howard Mao
9fb2216548 get rid of unused external mmio port 2016-02-10 21:49:02 -08:00
Howard Mao
72a876bfba add NASTI to TL converter 2016-02-10 11:12:39 -08:00
Palmer Dabbelt
b2ed35e8aa Print a better error on missing config classes 
Without this you don't actually see what config class you tried to use, which
makes it hard to grep around Makefiles to see why things are broken.
 2016-02-05 09:59:02 -08:00
Palmer Dabbelt
8422aaf6fc Add a "/" when targetDir doesn't have one 
This isn't Chisel 3 specific, but that's what I happened to do in the Chisel 3
Driver wrapper.
 2016-02-05 09:57:47 -08:00
Palmer Dabbelt
3bb0f11e6c Chisel3 <> reverse fix 2016-02-05 09:56:42 -08:00
Howard Mao
06c3f9b655 Rocket Chip fixes in response to lowRISC team's comments 
* DMA frontend-backend communication tunneled over TileLink/AXI
 * Split MMIO and Mem requests in l1tol2net instead of in AXI interconnect
 * Don't make NIOMSHRs configurable. Fixed at 1.
 * Connect accelerator-internal CSRs into the CSR file
 * Make mtvec register configurable and writeable
 2016-02-02 13:14:52 -08:00
Howard Mao
33aa64212d fix more Chisel3 deprecations 2016-01-14 15:06:30 -08:00
Howard Mao
c06884b78c lowercase SMI to Smi 2016-01-11 17:44:10 -08:00
Howard Mao
806e40d19b implement DMA streaming functionality 2016-01-07 19:26:15 -08:00
Howard Mao
8190bf6e18 implement DMA unit 2015-12-16 21:27:48 -08:00
Howard Mao
1a272677ca more fixes to L2 cache 2015-12-16 21:06:39 -08:00
Howard Mao
560fdc19a8 add PLRU replacement option to L2 cache 2015-12-16 10:24:57 -08:00
Howard Mao
7ad9deeaee Fix issues with request merging in L2 cache and add regression tests 
In addition to the fix, there are several additions to the
RegressionTest module. The set of regressions is now parameterized and
split into ones for the cache and ones for the broadcast hub.
 2015-12-15 23:02:15 -08:00
Howard Mao
0c91e00676 move GroundTest configs to a separate file 2015-12-06 03:01:05 -08:00
Howard Mao
4f5dabcda2 add SCR file to device tree 2015-12-05 00:28:58 -08:00
Howard Mao
f35b83d3ca allow configuration of rocket ICache buffering 2015-12-02 17:18:39 -08:00
Howard Mao
cdc476a370 change Rocc parameterization 2015-12-01 17:56:09 -08:00
Andrew Waterman
e0d849fec5 Fix zscale testing 
Use the following command in vsim:

make CONFIG=ZscaleConfig MODEL=ZscaleTop TB=ZscaleTestHarness run-asm-tests
 2015-12-01 17:31:48 -08:00
Howard Mao
c8c68e75bb base NGenerators on NTiles, not the other way around 2015-12-01 15:26:09 -08:00
Howard Mao
40d68406d6 use xlen parameter for ALU 2015-11-30 18:04:44 -08:00
Howard Mao
23f0756978 implement support for multiple RoCC accelerators 2015-11-26 12:49:04 -08:00
Andrew Waterman
e25a020e60 Construct device tree ROM in MMIO region 
Rebuild riscv-tools for this to work!
 2015-11-25 21:23:37 -08:00
Howard Mao
ec6bfde9a3 fix WritebackUnit issue in uncore 2015-11-21 16:11:22 -08:00
Howard Mao
9d50f37289 fix unused set issue for multiple L2 cache banks 2015-11-20 23:26:28 -08:00
Howard Mao
ad3b7fd0e1 adjust CacheFillTest configuration 2015-11-19 10:52:14 -08:00
Howard Mao
4806f72b08 add CacheFillTest to check L2 conflict misses 2015-11-19 00:16:28 -08:00
Howard Mao
3514b6eb87 add some more useful configurations 2015-11-18 22:11:17 -08:00
Howard Mao
379d43d5f4 make MultiChannel routing more performant 2015-11-18 22:11:17 -08:00
Andrew Waterman
5195a5b891 Remove IPI network 
This is now provided via MMIO.
 2015-11-16 21:53:14 -08:00
Howard Mao
a1063bad54 fix issues with non-allocating put/get 2015-11-12 15:54:34 -08:00
Howard Mao
6ddf81090b didn't mean to turn off GenerateCached in last commit 2015-11-11 17:39:08 -08:00
Howard Mao
11f0b3d8db restore old L2 cache AcquireTransactor configuration 2015-11-11 17:10:58 -08:00
Howard Mao
31da692ccc default to single tile in WithMemtest 2015-11-11 14:54:13 -08:00
Howard Mao
55581195eb add groundtest submodule for simple memory testing 2015-11-11 14:33:02 -08:00
Howard Mao
149480411e make sure ClientTileLinkEnqueuer uses the correct parameters 2015-11-10 16:09:19 -08:00
Howard Mao
51f128ec74 actually use backendBuffering in front of unwrapper/converter chain 2015-11-09 11:50:18 -08:00
Howard Mao
bbf14ddc01 use definitions in consts header whenever possible 2015-11-05 10:48:32 -08:00
Howard Mao
7b252d8f89 get rid of now-unnecessary bits in MIF tag 2015-11-05 10:48:32 -08:00
Sagar Karandikar
ee9195be26 rename NBANKS knob to NBANKS_PER_MEM_CHANNEL for clarity 2015-11-05 10:48:32 -08:00
Sagar Karandikar
354abf5e6b fix NSets calculation 2015-11-05 10:48:32 -08:00
Howard Mao
dcef020ca0 get multichannel simulation working in emulator 2015-11-05 10:48:32 -08:00
Howard Mao
04d92dddbd add back decoupled NASTI connection at edge of RocketChip 2015-11-05 10:48:32 -08:00
Yunsup Lee
51116e0674 add 2 and 4 memory channel configs 2015-11-05 10:48:32 -08:00