Date: Sun, 20 Apr 2003 17:57:47 -0400 From: Jake Burkholder <jake@locore.ca> To: ticso@cicely.de Cc: cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/conf NOTES files src/sys/dev/usb FILES ehci.c ehci_pci.c ehcireg.h ehcivar.h usb.c src/sys/modules/usb Makefile Message-ID: <20030420215747.GC42856@locore.ca> In-Reply-To: <20030420213537.GB20422@cicely9.cicely.de> References: <200304141404.h3EE48aL034057@repoman.freebsd.org> <ybs4r4zqixp.wl@ett.sat.t.u-tokyo.ac.jp> <20030416101546.GW529@cicely9.cicely.de> <20030420202527.GB42856@locore.ca> <20030420213537.GB20422@cicely9.cicely.de>
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Apparently, On Sun, Apr 20, 2003 at 11:35:38PM +0200, Bernd Walter said words to the effect of; > On Sun, Apr 20, 2003 at 04:25:28PM -0400, Jake Burkholder wrote: > > Apparently, On Wed, Apr 16, 2003 at 12:15:47PM +0200, > > Bernd Walter said words to the effect of; > > > On Wed, Apr 16, 2003 at 11:23:30AM +0900, Hidetoshi Shimokawa wrote: > > > > At Mon, 14 Apr 2003 07:04:08 -0700 (PDT), > > > > Bernd Walter wrote: > > > > Is this device supposed to work on sparc64? > > > > > > I don't know a reason why not. > > > > I don't know if this device is an exception, but the USB framework in > > general does not use busdma, so its not MI and won't work on sparc64. > > This device is not an exception - it wouldn't make much sense without > doing OHCI first as both are very similar in design. > joe said he would do busdma for OHCI, but I'm not shure if the porting > just stalled. > Is busdma realy an absolute required feature for sparc64? Yes it is, and it should be for alpha. alpha works because of this hack: #ifdef __alpha__ #define DMAADDR(dma, o) (alpha_XXX_dmamap((vm_offset_t) *(dma) + (o))) #else #define DMAADDR(dma, o) (vtophys(*(dma) + (o))) #endif But as a result alpha can only support limited amounts of physical memory (1 or 2G max depending on the system I think). Jake
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