mmap()

[M. Warner Losh]

In message: <20041210040529.48001.qmail at web52708.mail.yahoo.com>
            "Kamal R. Prasad" <kamalpr at yahoo.com> writes:
: So how does one use bus_dma within the USB framework?
: The API exists, but I don't think any of the src code
: in src/sys/dev/usb actually uses bus_dma. Oh btw -my
: data transfer is < 100K, so the 64-bit thing is not an
: issue.

It just happens.  The transfers are done via DMA from the usb bridge
chipset.

Warner