Date: Sat, 20 Dec 2014 10:30:36 +0100 From: Hans Petter Selasky <hps@selasky.org> To: Nidal Khalil <nedmath@gmail.com>, Kohji Okuno <okuno.kohji@jp.panasonic.com> Cc: freebsd-usb@freebsd.org Subject: Re: About XHCI_TD_PAGE_SIZE. Message-ID: <549541BC.6070505@selasky.org> In-Reply-To: <CADoY-6gXxYvw-Raq-LW6q_QmiG8F=W6msZs2Q3vcx3s1LnksLw@mail.gmail.com> References: <20141217.110334.1811096089058017495.okuno.kohji@jp.panasonic.com> <CADoY-6gXxYvw-Raq-LW6q_QmiG8F=W6msZs2Q3vcx3s1LnksLw@mail.gmail.com>
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On 12/17/14 05:42, Nidal Khalil wrote: > I agree. Thanks > > Nidal > On Dec 16, 2014 6:25 PM, "Kohji Okuno" <okuno.kohji@jp.panasonic.com> wrote: > >> Hi Hans, >> >> If we use PAGE_SIZE as USB_PAGE_SIZE, we should use PAGE_SIZE as >> XHCI_TD_PAGE_SIZE, too. I think. >> >> As you know, one TRB can use 1~64kB for the transfer length. >> Hi, We currently only check if 4K pages are supported by the hardware. If you change the value of XHCI_TD_PAGE_SIZE, you will also need to change the checks other places. You know that PAGE_SIZE is not a constant? Do you have a complete patch? --HPS
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