Dear SCO Customer,

Support Level Supplement (SLS) ptf7632e, the UnixWare 7.1.1 pci Driver
Supplement, addresses all of the problems listed below.

SLS ptf7632c addressed these issues:

  1. PCI devices of class 'bridge' are not handled correctly and therefore
     are not recognized. The device may appear in the DCU, but without
     entries for IOADDR or MEMADDR.

     The configurable parameter 'pci_skip_bridges' has been introduced to
     control whether bridge devices are skipped or not. SLS ptf7632c sets 
     this value to zero. The normal UnixWare 7.1.1 behavior of ignoring 
     PCI bridges can be reinstated by editing the file:

        /etc/conf/pack.d/pci/space.c

     and setting pci_skip_bridges to 1 as below:

        int pci_skip_bridges = 1;
    
     followed by a relink/reboot.

  2. A panic related to the use of hot plug features has been addressed.
     The hot plug code unsuccessfully tries to reference the expansion
     ROM information data.


SLS ptf7632d addressed this issue:  

  3. PCI probe uses BIOS.


SLS ptf7632e additionally addresses this issue:

  4. A panic occurs on some large memory machines due to a NULL pointer 
     dereference in the PCI driver.


Contents
--------

        /etc/conf/pack.d/pci/Driver_atup.o
        /etc/conf/pack.d/pci/Driver_mp.o
        /etc/conf/pack.d/pci/space.c
        /etc/conf/pack.d/ca/Driver_atup.o
        /etc/conf/pack.d/ca/Driver_mp.o
        /etc/conf/pack.d/svc/Driver_atup.o
        /etc/conf/pack.d/svc/Driver_mp.o


Software Notes and Recommendations
----------------------------------

SLS ptf7632e should only be installed on:

        UnixWare 7 Release 7.1.1

Note that SLS ptf7603k MUST be installed before ptf7632e can be installed.
If you have already installed the UnixWare 7.1.1 Maintenance Set, set71101i, 
note that SLS ptf7603k is included in that set, and need not be installed 
again. 

SLS ptf7632e overwrites ptf7632d, which was also included in the UnixWare
7.1.1 Maintenance Set, set71101i.


Installation Instructions
-------------------------

1. Download the ptf7632e.Z file to the /tmp directory on your machine.

2. As root, uncompress the file and add the SLS package to your system
   using these commands:

        $ su
        Password: <type your root password>
        # uncompress /tmp/ptf7632e.Z
        # pkgadd -d /tmp/ptf7632e
        # rm /tmp/ptf7632e

Alternatively, this SLS package may be installed in quiet mode,
that is, without displaying the release notes and asking for
installation confirmation.  To do this, use these commands:

        $ su
        Password: <type your root password>
        # uncompress /tmp/ptf7632e.Z
        # pkgadd -qd /tmp/ptf7632e all
        # rm /tmp/ptf7632e

3. Reboot the system after installing this SLS package.

The release notes displayed prior to installation can be found in:

        /var/sadm/pkg/ptf7632/install/ptf7632.txt


Removal Instructions
--------------------

1. As root, remove the SLS package using these commands:

        $ su
        Password: <type your root password>
        # pkgrm ptf7632

2. Reboot the system after removing this SLS package.


If you have questions regarding this SLS, or the product on which
it is installed, please contact your software supplier.