Re: BUS DMA sync

From: M. Warner Losh (imp_at_bsdimp.com)
Date: 09/26/03

  • Next message: Scott Long: "Request For Help: KSE for sparc64 and alpha"
    Date: Thu, 25 Sep 2003 19:47:12 -0600 (MDT)
    To: vjardin@free.fr
    
    

    In message: <200309250014.53816.vjardin@free.fr>
                Vincent Jardin <vjardin@free.fr> writes:
    : What's about PREREAD ? What kind of CPU synchronization is required prior a
    : DMA read ? There is no cache during a device to host memory process, isn't it
    : ?

    There is on MIPS.

    Warner
    _______________________________________________
    freebsd-hackers@freebsd.org mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-hackers
    To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org"


  • Next message: Scott Long: "Request For Help: KSE for sparc64 and alpha"

    Relevant Pages