Stream 240KB chunks into two alternating 256KB SRAM bounce windows; each chunk
ends in a unique 512B sentinel that a prebuilt SDMA ring polls before copying
the chunk to VRAM, followed by an in-order drain fence that the host waits on
before re-arming a window. No timing assumptions in either direction: the
sentinel is in-stream proof of data landing, the fence proves a full drain.
Adds a small pooled async bulk-OUT layer to USB3 so staging the next chunk
overlaps the wire, and a slot_start parameter to scsi_write for the second
window. 107 -> 276 MB/s copyin on tinyc8 (Kryo-3XX host).
Co-authored-by: tiny <tiny@local>
* start gpu
* progress
* fixes
* read correct
* libusb
* libusb works
* support asm24
* hmm
* one access file
* fix extra
* start AMBar
* works on am
* back to usb
* patch fw
* full fast write into a bar
* ugh, minus one gpus, next please
* mute libusb for now
* usb for asm24
* 63
* hmm
* ops
* rescan
* and gpu shoudl be there
* enumerate them?
* usbgpu bus 4, 100% reliable (draft)
* lil
* works
* comments
* add DEBUG
* cleaner
* simplest
* Revert "simplest"
This reverts commit 1d00354c16.
* Revert "cleaner"
This reverts commit c5662de956.
* assert we find gpu
* that's simpler
* this back
* simpler?
* correcT
* work
* nonsense
* works with more checks
* this works
* the 6s in the right place
* reliable now
* fix after reboot
* set config
* 1s timeouts
* close to fw loading
* streams
* usbhub works
* endpoints
* fix
* want to test tiny10
* move to tiny 10
* fix gpu
* ugly speed
* smth
* mostly broken, but signals and dmas
* do not reset gpu every time
* changes to run kernels
* ugh, not working
* t10
* pg and sc files
* some prog
* um?
* somehow it works
* patched for 24
* some tries
* minimal
* moving
* back to working
* so sloooooow
* move to controller
* usb.py rewrite
* rework
* cleaner 1
* cleaner 2
* cleaner 3
* new abstractions
* aft merge
* init controller
* cleaner 4
* cleaner 5
* patcher + tiny changes
* ignore that
* cleaner 6
* after rebase
* cleaner 7
* bring it back
* start linter war
* linter 2
* autogen was missing
* fix autogen
* typing
* better?
* mypy
* extra/legacy rename and cleaner
* shuffle
* better printing
* tiny changes and tests
---------
Co-authored-by: George Hotz <[email protected]>
sirhcmandGitHub