[Bug 265786] broadcom storage controller: bus_dmamap_load_ccb() is failing with EINPROGRESS for 1MB IOs

From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 12 Aug 2022 14:56:30 UTC

--- Comment #1 from Warner Losh <imp@FreeBSD.org> ---
First, EINPROGRESS means that the transaction has been deferred either because
the bounce pages it needs to allocate the memory backing the DMA isn't
available (which I don't think is in play, but might be if there's a maximum
address constraint for the dmamap) or there's not enough iommu contexts
available to do the I/O.

I'm having trouble recalling the exact context for my suggestion or the comment
that the fix should be in 13.1. Can you refresh my recollection on that?

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