Robert Allan JamesandClaude Sonnet 5
d686f28853
Closes the gap block_subsystem.c needs before any of 2h's real work (blkio_usb.c, attach wiring, hot-detach) can start: this driver is fully async/polled with no way for a synchronous caller (blkio_read()/ blkio_info() etc.) to get a result back. xhci_bot_wait_for_idle() is a bounded busy-wait over xhci_poll_events() -- MUST be called only from outside xhci_poll_events()'s own call frame, never from within it or a next_action dispatch (recursion into live Event Ring/ERDP processing, same class of hazard already documented for doorbell rings in this driver). xhci_get_dev() exposes the module-static device handle to outside callers that didn't observe the original hotplug event. SCSI READ CAPACITY(10) (opcode 0x25) is the other half -- nothing could learn a device's block size/capacity before this. First attempt sent it bare and hit the classic first-command UNIT ATTENTION (CSW FAILED); fixed with the same TUR-guard pattern READ(10) already used, generalized via a new bot_tur_chain_target field so TEST UNIT READY's PASS handling can chain into either command. bot_data_buf grown 512->1024 bytes (one Forth block = two 512-byte SCSI blocks, per block_subsystem.c's own 1KiB-unit convention). Verified live via a temporary probe (hot-attached disk/usb-thumbdrive- test.img via QMP, reverted after capture): TUR-guarded READ CAPACITY10 correctly reported last LBA=0x1ffff, block size=0x200 -- exactly 64MiB, matching the test image byte for byte -- followed by a TUR-guarded 1024-byte/2-block READ10, both PASS. All three architectures re-verified clean, probe-free boot to ok> on the reverted tree. FABRIC-2.md Section X 2h updated with the writeup; the blkio_usb.c backend itself is next. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CXjAPTEKrgY2Mrk25KoLDn
include/
Public headers for the hosted StarForth VM (src/). Kernel-only headers
live under include/starkernel/.
Core VM
vm.h— theVMstruct and all core types (DictEntry,DictPhysics, stacks, dictionary state); the central header most other files include.vm_api.h— external VM API surface.vm_host.h,vm_debug.h,startup.h,version.h— host integration, debug utilities, startup sequencing, version string.cli.h,repl.h,io.h,log.h— CLI parsing, REPL loop, I/O, logging.word_registry.h— word registration system shared by everysrc/word_source/*.cfile.compudynamics.h— the generic compudynamics module: tuning-word/config lookups (cd_tuning_word(),cd_tuning_vm()) consumed byssm_jacquard.c.
Memory / blocks
memory_management.h,dictionary_management.h— dictionary allocator and search.block_subsystem.h,blkcfg.h,blkio.h,blkio_factory.h— logical→ physical block mapper and pluggable block I/O backends (file/RAM).platform_alloc.h,platform_lock.h,platform_time.h— platform abstraction shims (hosted vs. kernel allocation/locking/timing).
Physics-driven adaptive runtime (7 feedback loops)
physics_runtime.h— main physics coordinator.physics_hotwords_cache.h— Loop #1, execution-heat hot-words cache.physics_metadata.h— per-wordDictPhysicsmetadata tracking.physics_pipelining_metrics.h— Loop #4, word-transition prediction.physics_execution_hooks.h— execution instrumentation hook points.rolling_window_of_truth.h,rolling_window_knobs.h— Loop #2 circular execution-history buffer and its tuning knobs.inference_engine.h— Loops #5/#6, window-width and decay-slope statistical inference.dictionary_heat_optimization.h— Loop #1 heat counters.ssm_jacquard.h— L8 Jacquard steady-state mode selector.doe_metrics.h— Design of Experiments (2^7 factorial) metrics.profiler.h— performance profiling hooks.
Arithmetic / codegen
q48_16.h— Q48.16 deterministic fixed-point arithmetic (used instead of IEEE-754 float specifically to keep cross-architecture behavior bit-identical).math_portable.h— portable math helpers.arch_detect.h,starforth_config.h— architecture detection and the build-flag fallback-default layer (used when a.cfile is compiled by hand withoutmake).vm_asm_opt.h,vm_asm_opt_arm64.h,vm_asm_opt_riscv64.h,vm_inner_interp_asm.h,vm_inner_interp_arm64.h,vm_inner_interp_riscv64.h— per-architecture assembler-optimized inner interpreter (USE_ASM_OPT=1).
See include/starkernel/README.md for the bare-metal kernel headers.