Date: Tue, 01 Jun 1999 20:29:19 +0800 From: Stephen Hocking-Senior Programmer PGS Tensor Perth <shocking@prth.pgs.com> To: daryll@harlot.rb.ca.us (Daryll Strauss), dfr@freebsd.org Cc: multimedia@freebsd.org Subject: Encouraging progress with FreeBSD 3dfx device driver. Message-ID: <199906011229.UAA10598@ariadne.tensor.pgs.com>
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I've made some huge steps during the past couple of days with the driver. For
a long time I was having problems with the structure being passed to the ioctl
call being corrupted. It turned out that I wasn't setting up the call properly
in the linux emulator. Now the main problem lies with mmaping the card memory.
Watching the system calls whizz by, it works up until a couple of ioctls's
past the mmap. There it hangs hard. A softreset leaves the card in a bizzarre
state, where even any calls that touch it later hang. It takes a power cyle to
make it sensible again. I'm going to be reviewing carefully the mmap and
address setup.
Stephen
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