Messages in this thread | | | From | Tabris <> | Subject | Re: 2.4.21-rc1-ac2 Promise IDE DMA won't work | Date | Tue, 29 Apr 2003 14:48:07 -0400 |
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> On Monday 28 April 2003 09:58 pm, Andre Hedrick wrote: >> NO ATAPI DMA! >> >> I will not write the driver core to attempt to support the various >> combinations. The ATAPI DMA engine space is used support 48bit. >> Use the onboard controller for ATAPI. >> Andre Hedrick >> LAD Storage Consulting Group > > Can I object that it came built onto the board? okok... i'll take that > as a no for now... > >> Tho i'm still not quite sure how it makes a diff to be honest, unless >> you mean that the Promise and HPT will never be supported for DMA? >> >> and the only other thing i should say is that altho i'm not exactly a >> n00b, the average user WILL expect it to work. >> >> can i expect this to be fixed by 2.6? (yeah, i know... 2.4-ac-ide >>code is similar to 2.5-ide code) >> -- >> tabris
>The point is that you should put your ATAPI device (in this case the >cd-rom) >on the VIA controllers, and place the hdd's on the promise controller, >since dma is supported for hdd's...
>This is also their intended primary functions by the manufacturers..., >for example the HPT370 controller with bios version >1.1.x.xxx does >not have ATAPI support (atleast officially, I haven't tried it) > > >Thomas
So, are you telling me that DMA for both my hard drives, and my CD-R/Ws will work, if i put my HDs on the PDC20265 controller, and my CD-R/W on the VIA?
or will i lose DMA on the hard drives in this way, losing performance?
the second solution, tho one _I_ could probably live with, is still a problem, especially for those of us who want to sell GNU/Linux to our customers as a 'better' solution.
btw, please cc: me in your replies, as I no longer am able to subscribe to the linux-kernel list. this reply i had to hack by hand from marc.theaimsgroup
-- tabris - Why don't you fix your little problem... and light this candle? -- Alan Shepherd, the first man into space, Gemini program
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