Re: CVS commit: src
> > Why not simply using bus_space(9) for non-cachable I/O? > > (like sys/arch/arc/arc/bus_space_sparse.c) > > I think the reason for not using was bus space was the lack of an MI > tag for physmem. That said, I don't mind if someone wants to convert > the driver to dance around bus space or do other kinds of maintenance. I guess bus_space_map(9) + bus_space_vaddr(9) will work, but for now we should put large XXX mark to those functions in MI arch/mips... --- Izumi Tsutsui
Re: CVS commit: src
On Wed Jan 26 2011 at 20:47:11 +0900, Toru Nishimura wrote: > Antti Kantee said; > > >eMIPS is a platform developed at Microsoft Research for researching > >reconfigurable computing. eMIPS allows dynamic loading and scheduling > >of application-specific circuits for the purpose of accelerating > >computations based on the current workload. > > > >NetBSD eMIPS support for NetBSD 4.x was written at Microsoft Research > >by Alessandro Forin and Neil Pittman. Microsoft Corporation has > >donated full copyright to The NetBSD Foundation. > > Could you provide us the reference pointer to the eMIPS project? It's long > time ago last I saw Mr. Forin name in CS research field. Yes, it's the same Mr. Forin who is the author of some old source files in our tree which date back to Mach code. http://research.microsoft.com/en-us/projects/emips/ That, and a bunch of other links are available on: http://www.netbsd.org/ports/emips/ plus, a(nother?) set of links is available on blog.netbsd.org, but that service appears to be down now. Not to worry, I'm pretty sure you can access all the important pages by starting from one and just traversing the links ;) -- älä karot toivorikkauttas, kyl rätei ja lumpui piisaa
Re: CVS commit: src
On Wed Jan 26 2011 at 19:48:52 +0900, Izumi Tsutsui wrote: > > > > + * Make a kernel mapping valid for I/O, e.g. non-cachable. > > > > + * Alignment and length constraints are as-if NBPG==PAGE_SIZE. > : > > > What is this miracle, however? > > > > IIRC that miracle is about mapping the flash which is not in kseg1. > > The story included lots of details on how mapping an arbitrary physical > > address was much easier on Mach ;) > > Why not simply using bus_space(9) for non-cachable I/O? > (like sys/arch/arc/arc/bus_space_sparse.c) I think the reason for not using was bus space was the lack of an MI tag for physmem. That said, I don't mind if someone wants to convert the driver to dance around bus space or do other kinds of maintenance. -- älä karot toivorikkauttas, kyl rätei ja lumpui piisaa
Re: CVS commit: src
Antti Kantee said; eMIPS is a platform developed at Microsoft Research for researching reconfigurable computing. eMIPS allows dynamic loading and scheduling of application-specific circuits for the purpose of accelerating computations based on the current workload. NetBSD eMIPS support for NetBSD 4.x was written at Microsoft Research by Alessandro Forin and Neil Pittman. Microsoft Corporation has donated full copyright to The NetBSD Foundation. Could you provide us the reference pointer to the eMIPS project? It's long time ago last I saw Mr. Forin name in CS research field. Toru Nishimura / ALKYL Technology
Re: CVS commit: src
> > > + * Make a kernel mapping valid for I/O, e.g. non-cachable. > > > + * Alignment and length constraints are as-if NBPG==PAGE_SIZE. : > > What is this miracle, however? > > IIRC that miracle is about mapping the flash which is not in kseg1. > The story included lots of details on how mapping an arbitrary physical > address was much easier on Mach ;) Why not simply using bus_space(9) for non-cachable I/O? (like sys/arch/arc/arc/bus_space_sparse.c) --- Izumi Tsutsui
