- 12 7月, 2022 1 次提交
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由 William Wang 提交于
This commit adds an extra cycle for load pipeline. It should fix timing problem caused by load pipeline. Huge perf loss is expected. Now load data result is sent to rs in load_s3, load may hit hint (fastUop.valid) is sent to rs in load_s2. We add a 3 cycle load to load fast forward data path. There should be enough time to forward data inside memory block. We will refactor code and add a load_s3 module in the future. BREAKING CHANGE: load pipeline reorginized
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- 28 6月, 2022 1 次提交
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由 William Wang 提交于
This commit re-pipelines ECC check logic in data cache and exception generate logic for better timing. Now ecc error is checked 1 cycle after reading result from data sram. An extra cycle is added for load writeback to ROB. Future work: move the pipeline to https://github.com/OpenXiangShan/XiangShan/blob/master/src/main/scala/xiangshan/backend/CtrlBlock.scala#L266-L277, which add a regnext. * dcache: repipeline ecc check logic for timing * chore: fix normal loadAccessFault logic * wbu: delay load unit wb for 1 cycle * dcache: add 1 extra cycle for beu error report
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- 06 5月, 2022 1 次提交
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由 Haojin Tang 提交于
* feat: parameterize load/store pipeline, etc. * fix: use LoadPipelineWidth rather than LoadQueueSize * fix: parameterize `rdataPtrExtNext` * SBuffer: fix idx update logic * atomic: parameterize atomic logic in `MemBlock` * StoreQueue: update allow enque requirement * feat: support one load/store pipeline * feat: parameterize `EnsbufferWidth` * chore: resharp codes for better generated name
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- 28 1月, 2022 1 次提交
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由 Steve Gou 提交于
* parameters: reduce ghr length and make it calculated using a formula * bpu: add error checking for ghist ptr, support hist lengths that are not power of 2
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- 26 1月, 2022 1 次提交
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由 Jay 提交于
* ReplacePipe: block miss until get ReleaseAck * IPrefetch: cancle prefetch req when meet MSHR * Fetch <perf>: add fetch bubble performance counters
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- 20 1月, 2022 1 次提交
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由 Lingrui98 提交于
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- 18 1月, 2022 1 次提交
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由 Lingrui98 提交于
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- 13 1月, 2022 1 次提交
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由 Lingrui98 提交于
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- 07 1月, 2022 2 次提交
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由 Lingrui98 提交于
* remove base table and use ftb results as base pred * add corrsponding redirect logic in bpu
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由 Lingrui98 提交于
* split entries into by numBr and use bits in pc to hash between them * use shorter tags for each table * make perfEvents a general interface for branch predictor components in order to remove casting operation in composer
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- 01 1月, 2022 1 次提交
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由 Lingrui98 提交于
* move statisical corrector to stage 3 * add recover path in stage 3 for ras in case stage 2 falsely push or pop * let stage 2 has the highest physical priority in bpu * left ras broken for the next commit to fix
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- 30 12月, 2021 3 次提交
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由 Lingrui98 提交于
* reduce number of tables to 4, meanwhile quadrupling number of entries per table, improving area efficiency * use per bank wrbypass * invalidate read response when writing to SRAM * move validArray and useful bit into SRAMs, thus reducing area * use an optimized history config for such table sizes
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由 Lingrui98 提交于
* timing: use single ported SRAMs, invalidating read responses on write * performance: -- shortening history length to accelerate training -- use a predictor to reduce s2_redirects on FTB not hit
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由 Jay 提交于
* fix performance counter in ICacheMainpipe * IPrefetch: add prefetch address merge and counter
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- 24 12月, 2021 3 次提交
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由 William Wang 提交于
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由 Jay 提交于
* IPrefetch: fix prefetchPtr stop problem * This problem happens because prefetchPtr still exits when close IPrefetch * Fix PMP req port still be occupied even when ICache miss * Shut down IPrefetch * IPrefetch: fix Hint not set PreferCache bit * bump HuanCun
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由 Lingrui98 提交于
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- 23 12月, 2021 3 次提交
- 21 12月, 2021 1 次提交
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由 Jay 提交于
* Add Naive Instruction Prefetch * Add instruction prefetch module in ICache * send Hint to L2 (prefetched data stores in L2) * Ftq: add prefetchPtr and prefetch interface * Fix IPrefetch PMP Port preempting problem * Fix merge conflict
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- 20 12月, 2021 2 次提交
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由 Li Qianruo 提交于
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由 William Wang 提交于
* dcache: let ecc error and l2 corrupt raise load af If CSR.smblockctl.cache_error_enable is disabled, ecc error and l2 corrupt will not raise any exception. * mem: enable cache error by default * mem: support store ecc check, add ecc error csr Support store / atom ecc check (early version) Add ecc error csr to distingush ecc error and other access fault Timing opt and unit tests to be added.
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- 18 12月, 2021 1 次提交
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由 Lingrui98 提交于
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- 17 12月, 2021 2 次提交
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由 Lingrui98 提交于
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由 Lemover 提交于
* memblock: regnext ptw's resp * pmp: timing optimization from tlb.sram.ppn to pmp, add static pmp check long latency: tlb's sram may be slow to gen ppn, ppn to pmp may be long latency. Solution: add static pmp check. Fatal problem: pmp grain is smalled than TLB pages(4KB, 2MB, 1GB) Solution: increase pmp'grain to 4K, for 4K entries, pre-check pmp and store the result into tlb storage. For super pages, still dynamic check that translation and check. * pmp: change pmp grain to 4KB, change pma relative init config * bump ready-to-run, update nemu so for pmp grain * bump ready-to-run, update nemu so for pmp grain again update pmp unit test. The old test assumes that pmp grain is less than 512bit.
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- 14 12月, 2021 1 次提交
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由 Jay 提交于
* ICache: add ReplacePipe for Probe & Release * remove ProbeUnit * Probe & Release enter ReplacePipe * fix bugs when running Linux on MinimalConfig * TODO: set conflict for ReplacePipe * ICache: fix ReplacePipe invalid write bug * chores: code clean up * IFU: optimize timing * PreDecode: separate into 2 module for timing optimization * IBuffer: add enqEnable to replace valid for timing * IFU/ITLB: optimize timing * IFU: calculate cut_ptr in f1 * TLB: send req in f1 and wait resp in f2 * ICacheMainPipe: add tlb miss logic in s0 * Optimize IFU timing * IFU: fix lastHalfRVI bug * IFU: fix performance bug * IFU: optimize MMIO commit timing * IFU: optmize trigger timing and add frontendTrigger * fix compile error * IFU: fix mmio stuck bug
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- 10 12月, 2021 1 次提交
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由 Yinan Xu 提交于
This commit optimizes the coding style and timing for hardware performance counters. By default, performance counters are RegNext(RegNext(_)).
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- 08 12月, 2021 1 次提交
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由 Lingrui98 提交于
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- 07 12月, 2021 1 次提交
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由 Lingrui98 提交于
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- 06 12月, 2021 1 次提交
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由 Jiawei Lin 提交于
* SoC: add axi4spliter * pmp: add apply method to reduce loc * pma: add PMA used in axi4's spliter * Fix package import * pma: re-write tl-pma, put tl-pma into AXI4Spliter * pma: add memory mapped pma * soc: rm dma port, rm axi4spliter, mv mmpma out of spliter * Remove unused files * update dma pma check port at SimTop.scala; update pll lock defalt value to 1 Co-authored-by: NZhangZifei <zhangzifei20z@ict.ac.cn> Co-authored-by: Nrvcoresjw <shangjiawei@rvcore.com>
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- 05 12月, 2021 1 次提交
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由 Yinan Xu 提交于
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- 04 12月, 2021 1 次提交
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由 Jay 提交于
* ICache: add ReplacePipe for Probe & Release * remove ProbeUnit * Probe & Release enter ReplacePipe * fix bugs when running Linux on MinimalConfig * TODO: set conflict for ReplacePipe * ICache: add Block logic for ReplacePipe * ReplacePipe: change probe assert condition * support Probe NToN (Probe not hit in ICache) * ICache: fix a bug in meta_write_arb
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- 30 11月, 2021 1 次提交
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由 William Wang 提交于
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- 29 11月, 2021 2 次提交
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由 William Wang 提交于
* sbuffer: do flush correctly while draining sbuffer * mem: disable EnableFastForward for timing reasons * sbuffer: optimize forward mask gen timing * dcache: block main pipe req if refill req is valid Refill req comes from refill arbiter. There is not time left for index conflict check. Now we block all main pipe req when refill req comes from miss queue. * dcache: delay some resp signals for better timing * dcache: optimize wbq enq entry select timing * dcache: decouple missq req.valid to valid & cancel * valid is fast, it is used to select which miss req will be sent to miss queue * cancel can be slow to generate, it will cancel miss queue req in the last moment * sbuffer: optimize noSameBlockInflight check timing
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由 Li Qianruo 提交于
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- 28 11月, 2021 1 次提交
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由 Jay 提交于
* ICache: metaArray & dataArray use bank interleave * ICache: add bank interleave * ICache: add parity check for meta and data arrays * IFU: fix bug in secondary miss * secondary miss doesn't send miss request to miss queue * ICache: write back cancled miss request * ICacheMissEntry: add second miss merge * deal with situations that this entry has been flushed, and the next miss req just requests the same cachline. * ICache: add acquireBlock and GrantAck support * refact: move icache modules to frontend modules * ICache: add release surport and meta coh * ICache: change Get to AcquireBlock for A channel * rebuild: change ICachePara package for other file * ICache: add tilelogger for L1I * ICahce: add ProbeQueue and Probe Process Unit * ICache: add support for ProbeData * ICahceParameter: change tag code to ECC * ICahce: fix bugs in connect and ProbeUnit * metaArray/dataArray responses are not connected * ProbeUnit use reg so data and req are not synchronized * RealeaseUnit: write back mata when voluntary * Add ICache CacheInstruction * move ICache to xiangshan.frontend.icache._ * ICache: add CacheOpDecoder * change ICacheMissQueue to ICacheMissUnit * ProbeUnit: fix meta data not latch bug * IFU: delete releaseSlot and add missSlot * IFU: fix bugs in missSlot state machine * IFU: fix some bugs in miss Slot * IFU: move out fetch to ICache Array logic * ReleaseUnit: delete release write logic * MissUnit: send Release to ReleaseUnit after GAck * ICacheMainPipe: add mainpipe and stop logic * when f3_ready is low, stop the pipeline * IFU: move tlb and array access to mainpipe * Modify Frontend and ICache top for mainpipe * ReleaseUnit: add probe merge status register * ICache: add victim info and release in mainpipe * ICahche: add set-conflict logic * Release: do not invalid meta after sending release * bump Huancun: fix probe problem * bump huancun for MinimalConfig combinational loop * ICache: add LICENSE for new files * Chore: remove debug code and add perf counter * Bump huancun for bug fix * Bump HuanCun for alias bug * ICache: add dirty state for CliendMeta
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- 26 11月, 2021 1 次提交
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由 Yinan Xu 提交于
This commit changes how isFreed is calculated. Instead of using refCounter in the next, we compute it at this cycle and RegNext it.
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- 16 11月, 2021 1 次提交
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由 Jiawei Lin 提交于
* FDivSqrt: use hierarchy API to avoid dedup bug * Dedup: use hartId from io port instead of core parameters * Bump fudian
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- 13 11月, 2021 1 次提交
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由 Lingrui98 提交于
* fix a bug of wrongly discarding some new bits to be xored * ghr should be longer in default config to avoid falsely overriding * move TageBanks to top, and fix SC folded history config
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