7f5998c707
o use a mutex to protect the bounce pages structure. o use a SYSINIT function to initialize the bounce pages structures and thus avoid a race condition in alloc_bounce_pages(). o add support for the BUS_DMA_NOWAIT flag in bus_dmamap_load(). o remove obsolete splhigh()/splx() calls. o remove printf() about incorrect locking in busdma_swi() and sync busdma_swi() with the one of the alpha backend. o use __FBSDID.
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