pciide.c

Go to the documentation of this file.

/*
 * COPYRIGHT:       See COPYING in the top level directory
 * PROJECT:         PCI IDE bus driver
 * FILE:            drivers/storage/pciide/pciide.c
 * PURPOSE:         Main file
 * PROGRAMMERS:     Hervé Poussineau (hpoussin@reactos.org)
 */
 
#include "pciide.h"
 
#define NDEBUG
#include <debug.h>
 
IDE_CHANNEL_STATE NTAPI
PciIdeChannelEnabled(
    IN PVOID DeviceExtension,
    IN ULONG Channel)
{
    DPRINT("PciIdeChannelEnabled(%p, %lu)\n", DeviceExtension, Channel);
 
    return ChannelStateUnknown;
}
 
BOOLEAN NTAPI
PciIdeSyncAccessRequired(
    IN PVOID DeviceExtension)
{
    DPRINT("PciIdeSyncAccessRequired %p\n", DeviceExtension);
 
    return FALSE;
}
 
ULONG NTAPI
PciIdeUseDma(
    IN PVOID DeviceExtension,
    IN PUCHAR CdbCommand,
    IN PUCHAR Slave)
{
    DPRINT("PciIdeUseDma(%p %p %p)\n", DeviceExtension, CdbCommand, Slave);
 
    /* Nothing should prevent us to use DMA */
    return 1;
}
 
NTSTATUS NTAPI
PciIdeGetControllerProperties(
    IN PVOID DeviceExtension,
    OUT PIDE_CONTROLLER_PROPERTIES ControllerProperties)
{
    ULONG SupportedMode;
    USHORT PciCommand;
 
    if (ControllerProperties->Size != sizeof(IDE_CONTROLLER_PROPERTIES))
        return STATUS_REVISION_MISMATCH;
 
    ControllerProperties->PciIdeChannelEnabled = PciIdeChannelEnabled;
    ControllerProperties->PciIdeSyncAccessRequired = PciIdeSyncAccessRequired;
    ControllerProperties->IgnoreActiveBitForAtaDevice = FALSE;
    ControllerProperties->AlwaysClearBusMasterInterrupt = TRUE;
    ControllerProperties->PciIdeUseDma = PciIdeUseDma;
    ControllerProperties->AlignmentRequirement = 1;
 
    PciIdeXGetBusData(DeviceExtension,
                      &PciCommand,
                      FIELD_OFFSET(PCI_COMMON_HEADER, Command),
                      sizeof(PciCommand));
    if (!(PciCommand & PCI_ENABLE_BUS_MASTER))
    {
        SupportedMode = PIO_MODE0 | PIO_MODE1 | PIO_MODE2 | PIO_MODE3 | PIO_MODE4;
    }
    else
    {
        SupportedMode = PIO_MODE0 | PIO_MODE1 | PIO_MODE2 | PIO_MODE3 | PIO_MODE4 |
                        SWDMA_MODE0 | SWDMA_MODE1 | SWDMA_MODE2 |
                        MWDMA_MODE0 | MWDMA_MODE1 | MWDMA_MODE2 |
                        UDMA_MODE0 | UDMA_MODE1 | UDMA_MODE2 |
                        UDMA_MODE3 | UDMA_MODE4 | UDMA_MODE5 | UDMA_MODE6;
    }
 
    ControllerProperties->SupportedTransferMode[0][0] =
    ControllerProperties->SupportedTransferMode[0][1] =
    ControllerProperties->SupportedTransferMode[1][0] =
    ControllerProperties->SupportedTransferMode[1][1] = SupportedMode;
 
    return STATUS_SUCCESS;
}
 
NTSTATUS NTAPI
DriverEntry(
    IN PDRIVER_OBJECT DriverObject,
    IN PUNICODE_STRING RegistryPath)
{
    NTSTATUS Status;
 
    Status = PciIdeXInitialize(
        DriverObject,
        RegistryPath,
        PciIdeGetControllerProperties,
        0);
 
    return Status;
}