On Fri, 2014-11-07 at 02:14 -0600, Emil Medve wrote: > Hello Scott, > > > On 11/07/2014 01:34 AM, Scott Wood wrote: > > On Fri, 2014-11-07 at 01:31 -0600, Emil Medve wrote: > >> Hello Scott, > >> > >> > >> On 11/06/2014 03:49 PM, Scott Wood wrote: > >>> On Wed, 2014-11-05 at 09:18 -0600, Emil Medve wrote: > >>>> +Devices connected to a BMan instance via Direct Connect Portals (DCP) > >>>> must link > >>>> +to the respective BMan instance > >>>> + > >>>> +- fsl,bman > >>>> + Usage: Required > >>>> + Value type: <prop-encoded-array> > >>>> + Description: List of phandle and DCP index pairs, to the > >>>> BMan instance > >>>> + to which this device is connected via the DCP > >>> > >>> Does software need the DCP index (though for QMan there do seem to be a > >>> few registers associated with each DCP)? Where can I find that info in > >>> the manual? > >> > >> The DCP index helps describe the topology of the devices connected to > >> the B/QMan. One might be tempted to use some address to reference said > >> DCP, unfortunately the pertinent registers/bits for said DCP(s) are not > >> into a compact region. Look at the CCSR memory map for B/QMan > >> > >> In the QMan case things are marginally better. For each hardware portal > >> there are a handful of (vaguely named *DCx*, *DCPx* or *DCP*) registers > >> (configuration, performance monitoring and debugging). However, still > >> registers and bits spread here and there > >> > >> In the BMan case things are a bit worse as the registers names are less > >> friendly and still spread around > >> > >> Do you need specific names/offsets? > > > > My question about the manual wasn't rhetorical -- I tried to find this > > information and couldn't. > > I get that. As I said, the registers/bits are spread around in the CCSR > space of each block and not named excessively friendly. As such I hinted > for some search patterns to make it easier to find them. In order to > progress the review I'm willing to prepare a list. Just let me know
Could you point me to the section of the manual where this information is -- friendly or otherwise? I saw the QMan direct connect portal registers. I didn't see how to tell which <i> in DCPi_xxx goes with which device. -Scott _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
