.\" $NetBSD: p5pb.4,v 1.18 2019/12/30 00:49:56 uwe Exp $
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.\" Copyright (c) 2011, 2012 The NetBSD Foundation, Inc.
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.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Radoslaw Kujawa.
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.Dd February 17, 2017
.Dt P5PB 4 amiga
.Os
.Sh NAME
.Nm p5pb
.Nd Phase5 PCI bridge driver
.Sh SYNOPSIS
.Cd "p5pb0 at p5bus0"
.Cd "pci* at p5pb?"
.Cd "genfb* at pci?"
.Cd "voodoofb* at pci?"
.Cd "options P5PB_DEBUG"
.Cd "options P5PB_CONSOLE"
.Sh DESCRIPTION
The
.Nm
driver provides support for the PCI bus present on various devices equipped with
the Phase5 PCI bridge.
.Pp
The
.Dv P5PB_CONSOLE
option activates the necessary support for the console on CyberVisionPPC and
BlizzardVisionPPC, allowing the attachment of the
.Xr genfb 4
driver.
3Dfx Voodoo 3 boards installed in G-REX are also supported as console by
this option in conjunction with the
.Xr voodoofb 4
driver.
.Pp
Additional, excessive debugging output is enabled by the
.Dv P5PB_DEBUG
option.
.Sh HARDWARE
The
.Nm
driver supports the following hardware:
.Pp
.Bl -dash -compact
.It
Phase5 BlizzardVisionPPC graphics card
.It
Phase5 CyberVisionPPC graphics card
.It
DCE Computer G-REX 1200
.It
DCE Computer G-REX 4000
.El
.Sh SEE ALSO
.Xr amiga/cv3dpb 4 ,
.Xr amiga/p5membar 4 ,
.Xr genfb 4 ,
.Xr pci 4
.\" .Xr pm2fb 4
.Pp
.Lk http://wiki.netbsd.org/users/rkujawa/g-rex/ "Programming the G-REX PCI bridge"
.Sh HISTORY
The
.Nm
device first appeared in
.Nx 6.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Radoslaw Kujawa Aq Mt radoslaw.kujawa@gmail.com .
.Sh CAVEATS
The
.Nx
developers don't have access to G-REX hardware or documentation.
Support for this device is based on best wishes.
.Pp
Support for
.Xr genfb 4
framebuffer on CVPPC/BVPPC needs more testing.
.Sh BUGS
DMA to host memory is not supported.
This is a driver limitation.