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Preparing Memory for I/O

This section describes the PrepareMemoryForIO function and its associated data structures. Different ways of employing PrepareMemoryForIO are discussed in Using PrepareMemoryForIO.

PrepareMemoryForIO Data Structures

IOPreparationTable Options

Using PrepareMemoryForIO

PrepareMemoryForIO

Logical and Physical Memory Preparation

Mapping Tables

Scatter-Gather Client Buffers

Multiple Transfers

Reducing Memory Usage

Reducing Execution Overhead

DMA Alignment Requirements

Partial Preparation

© 1999 Apple Computer, Inc. – (Last Updated 26 March 99)