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-
-
- README for toolbox/document/GIOdriver
-
-
- The GIO driver postscript file in this directory is a symlink to the same
- in the toolbox/hardway/GIO_DRVR4.0.5 directory. The README below is the
- README from that same directory. (See toolbox/hardware/GIO_DRVR4.0.5 for
- the separate source code example file as well.)
-
-
-
- GIO Device Driver Writing Guide
-
-
- The postscript file in this directory contains information needed to
- write a device driver for a GIO board. All of the information
- included in this directory is based on IRIX 4.0.x. Information on
- how to write a GIO driver for IRIX 5.x is included in the current
- version of the "IRIX Device Driver Programming Guide" document. See
- the toolbox/hardware/GIO_DRVR5.1 directory for the seperate source
- code example program as well as an unpdated ascii text file version
- of documentation.
-
-
- The gio_4.ps file in this directory is a replica of the file in
- toolbox/hardware/GIO_DRVR4.0.5. for the complete directory contents,
- including an ascii text file version of this postscript document,
- plus a separate source code file containing the source included in
- this document, please refer to the toolbox/hardware/GIO_DRVR54.0.5
- directory.
-
-
- gio_4.ps: A postscript file of the chapter "Writing Kernel Level
- GIO Device Drivers for IRIX 4.0.x". This is a 26 page
- document intended as an addition to the existing "IRIX
- Device Driver Programming Guide". It contains a
- description of the specific needs of a GIO device driver
- and includes segments of source code as examples.
-
- The chapter has sections addressing the following
- topics:
-
- * Determining GIO Device Addresses
-
- * Including GIO Device Drivers in the Kernel
-
- * Writing edtinit()
-
- * GIO-Specific System Calls
-
- * GIO Interrupt Handler
-
- * Programmed I/O (PIO)
-
- * DMA Operations
-
- * GIO Devices with Hardware Supported Scatter-
- Gather Capability
-
- * DMA on GIO Devices with No Scatter-Gather
- Capability
-
- * Device Driver Example
-
- The device driver example is for a mythical (i.e. non-
- existent) device. Even though the example is for a
- non-existent device, it does compile cleanly. It can
- be used as a starting point for creating your own GIO
- device driver.
-