FYI - for the debian and gentoo HPPA developers...
Helge

-------- Forwarded Message --------
Subject: [PATCH/RFT] fbdev driver for HP Visualize FX cards
Date: Sun, 31 Oct 2021 20:53:46 +0100
From: Sven Schnelle <svens@stackframe.org>
To: parisc-linux@vger.kernel.org, linux-fbdev@vger.kernel.org
CC: Helge Deller <deller@gmx.de>

Hi List(s),

i wrote a fbdev driver for the HP Visualize FX cards used some of the
PA-RISC workstations. It utilizes some of the 2D acceleration features
present in the card.

What is working right now:

- modesetting (tested all VESA modes between 640x480 - 1600x1200).
- hardware cursor
- 2D acceleration like imageblit and fillrect.

What is not (fully) working:

- X11 with fbdev. xinit + mwm looks almost ok, except some corruption
where the text cursor was drawn when it is moved.
- more advanced X11 programs. xfce4-session doesn't really show much.

I would be most interested if people could test this driver with their FX
cards and report. I know that Visualize FXe doesn't work because it uses completely different register addresses. For FX10 i would hope that they
share the same register set as they are based on the same architecture.
Note that you have to disable the sticon driver, otherwhise that one would
hog the PCI card and visualizefx would never be probed.

Not sure about FX2/4/6. Might be different, might be not.

I obtained all the knowledge about the registers by watching what STI and the HP-UX
X Server writes into the card. So the register names might be called different compared to what HP has written in their data books.

Sven.

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