Appendix A - Coding Examples; Enabling/Disabling Sata Ports From A Wdm Driver - Intel 82801EB Programmer's Reference Manual

Serial ata controller

Table of Contents

Appendix A – Coding Examples

A.1

// Function Proto for Reading and Writing to device configuration space

NTSTATUS ReadWriteConfigSpace( PDEVICE_OBJECT pDO, BOOLEAN fRead, PVOID pBuf,

// This example illustrates how a WDM driver could read/write the PCS.PxE bits for

// enabling or disabling the SATA port(s).

// This example assumes direct access to the SATA PCI Configuration space

// Disable the ports. For simplicity, we don't do any status checking

BYTE val = 0; // to disable both ports

ReadWriteConfigSpace( pDO, TRUE, &val, 0x92, sizeof( val));

// Enable the ports. For simplicity, we don't do any status checking

BYTE val = 3; // to enable both ports

ReadWriteConfigSpace( pDO, FALSE, &val, 0x92, sizeof( val));

// Enable only port 0. For simplicity, we don't do any status

// checking

BYTE val;

SATA Programmer's Reference Manual

ULONG Offset, ULONG Length);

Theory of Operation

Table of Contents

82801er Ich5 Ich5r