From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 09 Oct 2002 21:29:29 -0600 Subject: Re: [Xpert]Re: Using the "chips" XFree86 driver on a PowerBook 3400 (almost there.) From: Michael Stephen Hanni To: Cc: Message-ID: In-Reply-To: Mime-version: 1.0 Content-type: text/plain; charset="US-ASCII" Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: Howdy. Well I've got it all to work save for the "WritePixmap" acceleration as it makes use of some fun MoveDataFromCPU/MoveDWORDS magic. With WritePixmap active there is a small box of color distortion around the mouse cursor. I'm sure the MoveDataFromCPU function is assuming little endian data, but I don't know exactly what I'm looking at. Oh, I haven't really touched this but XVideo is still fscked. I'm getting BadAllocs all over the place. on 10-9-2002 12:49 PM, Ani Joshi at ajoshi@unixbox.com wrote: > It seems you have changed the address space to use the big endian > aperture, this is correct. As for the accel engine, try turning off all > acceleration (just #if them out in the driver, no need for several XaaNo* > Options), and leave on SolidFills, this is the easiset to debug. There is > a problem with some 65550's and polling of the BR04 register which tends > to lockup the engine, you may be running into that. I would grab the old > source from Xpmac (I believe it had c&t accel) and poke around there to > see where the engine is initialized and the proper way to BLTWAIT on this > chip, its been long since I hacked on the c&t65550 so I don't remember > sorry. I had to mess around with the aperture, but I think I've got the aperture and the MMIOBase setup correctly now. By dropping a slightly modified ct_BltHiQV.h from the last Xpmac tarball into the latest XFree86 source everything works nicely. > As for the hardware cursor, you will have to swap the image of the cursor. > See the hw cursor support for radeon (or r128) and apply similair > necessary the big endian bits. Ah, got ya. I'm going to run some more tests and then I'll upload a patch somewhere for general consumption. Maybe, just maybe, there are other people that use this chip on a big endian machine. Cheers, Michael ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/