Setting Parameters Using the qfe.conf File

You can also specify the properties described in the section, "Setting Parameters in the /etc/system File"," on a per-device basis by creating a qfe.conf file in the /kernel/drv directory. The properties set in the qfe.conf file will override the parameters set in the /etc/system file. Use a qfe.conf file when you need to set a particular parameter for a device in the system. The parameters you set are read and write parameters that are listed in "Driver Parameter Values and Definitions".

The man pages for prtconf (1M), system (4) and driver.conf (4) include additional details. The next section shows an example of setting parameters in a qfe.conf file.

Setting ipg Driver Parameters Using a qfe.conf File

1. Invoke the prtconf -v command and pipe the output to the more command ( prtconf -v | more ) or redirect the output of the command to a file name ( prtconf -v > filename) and print the redirected file.

2. Find the section in the prtconf -v output for SUNW,qfe,instance #0, or SUNW,qfe,instance #1, and so on.

   The output for SUNW,qfe,instance #0 for a Sun Ultra 1 Creator Series system follows:

   ---

   SUNW,qfe, instance #0
               Driver software properties:
                   name <pm_norm_pwr> length <4>
                       value <0x00000001>.
                   name <pm_timestamp> length <4>
                       value <0x30743b26>.
               Register Specifications:
                   Bus Type=0xe, Address=0x8c00000, Size=108
                   Bus Type=0xe, Address=0x8c02000, Size=2000
                   Bus Type=0xe, Address=0x8c04000, Size=2000
                   Bus Type=0xe, Address=0x8c06000, Size=2000
                   Bus Type=0xe, Address=0x8c07000, Size=20

   ---

3. Become superuser.

4. Create the qfe.conf file in the /kernel/drv directory using a text editor and add lines similar to the following to the file:

   1. Specify name="qfe" and class="sbus".

   2. Use the reg property to specify the device, 0xe in this case. Use the value following Bus Type in the prtconf -v output.

   3. Type the addresses followed by the specified sizes. Precede each size with 0x and leading zeros, as indicated in the following screen.

   4. Set ipg1 and ipg2. Type a semicolon ( ; ) after the last value.

      These parameters are set to 20 and 10, respectively, in this example. The ipg parameters are defined in Chapter 3.

      ---

      name="qfe" class="sbus"
      reg=0xe,0x8c00000,0x00000108,0xe,0x8c02000,0x00002000,0xe,
      0x8c04000,0x00002000,0xe,0x8c06000,0x00002000,0xe,0x8c07000,
      0x00000020
      ipg1=20 ipg2=10;

      ---

5. Save the qfe.conf file.

6. Save and close all files and exit all programs; exit the windowing system.

7. Halt and reboot the system by typing the init 6 command at the # prompt.