accel/qaic/aic100.rst

67 with the QSM. Except for workload data via the DMA Bridge, all interaction with
83 (Q6) DSP with HVX and HMX. Each NSP can only run one workload at a time, but
84 multiple NSPs may be assigned to a single workload. Since each NSP can only run
85 one workload, AIC100 is limited to 16 concurrent workloads. Workload
95 workload is assigned a single DMA Bridge channel. The DMA Bridge exposes
118 1. Compile the workload into an ELF targeting the NSP(s)
119 2. Make requests to the QSM to load the workload and related artifacts into the
121 3. Make a request to the QSM to activate the workload onto a set of idle NSPs
122 4. Make requests to the DMA Bridge to send input data to the workload to be
124    workload.
125 5. Once the workload is no longer required, make a request to the QSM to
126    deactivate the workload, thus putting the NSPs back into an idle state.
127 6. Once the workload and related artifacts are no longer needed for future
242 (the other being MHI). As part of activating a workload to run on NSPs, the QSM
243 assigns that network a DMA Bridge channel. A workload's DMA Bridge channel
244 (DBC for short) is solely for the use of that workload and is not shared with
247 Each DBC is a pair of FIFOs that manage data in and out of the workload. One
385 By using the semaphores in conjunction with the workload running on the NSPs,
387 requests of data for the workload to process, but the DMA Bridge will only copy
388 the data into the memory of the workload when the workload is ready to process
451 	Activate a workload onto NSPs. The host must provide memory to be
455 	Deactivate an active workload and return the NSPs to idle.
485 have multiple users, each with their own workload running. If the workload of
486 one user crashes, the fallout of that should be limited to that workload and not
489 If a particular workload crashes, QSM notifies the host via the QAIC_SSR MHI
490 channel. This notification identifies the workload by it's assigned DBC. A
494 When SSR occurs, any state in the workload is lost. Any inputs that were in
496 remain in on-card DDR, but the host will need to re-activate the workload if
497 it desires to recover the workload.