173
Dialogic
®
DSI SS7MD Programmer’s Manual Issue 3
8.7
ssdm
Description
SSDM interfaces with the device driver for passing messages to and from the board and controls the
downloading software to the board. SSDM can be configured to handle different modes of addressing for
each board within a system. This can be based on either the PCI bus enumeration or board serial number.
If
SSDM
is defined as the congestion-handling module for
gctload,
then it will stop retrieving messages from
the board until the congestion abates. Other congestion handling steps may be required depending on the
system configuration and state.
Note:
This process is often referred to in a generic manner as
ssd
although the name of the binary for
use with DSI SS7MD Boards is in fact
ssdm
.
Syntax
ssdm [-v -o<addressing mode> -a<address> -d -s1 -s2]
Command Line Options
The
ssdm
utility supports the following command line options:
•
-v
Show version information.
•
-o<mode>
Select geographic address mode. The current geographic address modes are:
— 1: PCI address mode.
— 2: Board serial number address mode.
PCI address is assumed as a default. See
Section 8.7.1
for more information.
•
-a<addressing mode>
Defines the geographic addresses to map to board identifiers. Each address should be comma separated.
The first address will map to ID 0, the second to ID 1 etc. See
Section 8.7.1
for more information.
•
-d
Enable diagnostic tracing.
Example
For a two-board system using the board serial address mode, use the following command:
ssdm -o2 -aPX800007,PX800046
Note:
This example assumes the boards have serial numbers PX800007 and PX800046, and therefore
map to board identifiers 0, and 1, respectively.
8.7.1
Geographic Addressing
Geographic addressing allows a board's logical position in a system to remain the same irrespective of the
addition or removal of other boards on the PCI bus. Two different schemes of addressing boards are
supported:
•
PCI address mode, as supplied by enumerating boards on the PCI bus at boot time
•
Board serial number, determined by the board unique serial number
The mode of operation is determined by the -o option to the ssdm command as shown in
Section 8.7, “ssdm”
on page 173
.
If the parameter is omitted then operation defaults to PCI address mode.
For serial number based addressing, it is necessary to specify a second option -a to the ssdm command that
provides a list of the serial numbers of the board to reside at each logical board location.
The address list is formatted as follows:
