1685 lines
36 KiB
C
1685 lines
36 KiB
C
/*++
|
||
|
||
Copyright (c) 1991 Microsoft Corporation
|
||
|
||
Module Name:
|
||
|
||
wd7000ex.c
|
||
|
||
Abstract:
|
||
|
||
This is the port driver for the WD7000EX SCSI adapter.
|
||
|
||
Authors:
|
||
|
||
Mike Glass
|
||
Shashir Shah (Western Digital)
|
||
|
||
Environment:
|
||
|
||
kernel mode only
|
||
|
||
Notes:
|
||
|
||
Revision History:
|
||
|
||
--*/
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||
|
||
#include "miniport.h"
|
||
#include "wd7000ex.h" // includes scsi.h
|
||
|
||
//
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||
// The following structure is allocated
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||
// from noncached memory as data will be DMA'd to
|
||
// and from it.
|
||
//
|
||
|
||
typedef struct _NONCACHED_EXTENSION {
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||
|
||
//
|
||
// Internal Control Block
|
||
//
|
||
|
||
ICB Icb;
|
||
|
||
//
|
||
// Adapter inquiry buffer
|
||
//
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||
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||
ADAPTER_INQUIRY AdapterInquiry;
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||
|
||
} NONCACHED_EXTENSION, *PNONCACHED_EXTENSION;
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||
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||
//
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||
// Device extension
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||
//
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||
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||
typedef struct _HW_DEVICE_EXTENSION {
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||
PEISA_CONTROLLER EisaController;
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||
|
||
//
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||
// Adapter parameters
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||
//
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||
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||
CCHAR IdtVector;
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||
|
||
//
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||
// Adapter host adapter Id.
|
||
//
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||
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||
UCHAR HostTargetId;
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||
|
||
//
|
||
// Real-Mode interrupt state.
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||
//
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||
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||
UCHAR InterruptState;
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UCHAR NumberOfBuses;
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||
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} HW_DEVICE_EXTENSION, *PHW_DEVICE_EXTENSION;
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||
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||
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||
//
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||
// Function declarations
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||
//
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||
// Functions that start with 'Wd7000Ex' are entry points
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||
// for the OS port driver.
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||
//
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||
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||
ULONG
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||
Wd7000ExFindAdapter(
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||
IN PVOID DeviceExtension,
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||
IN PVOID Context,
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IN PVOID BusInformation,
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||
IN PCHAR ArgumentString,
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||
IN OUT PPORT_CONFIGURATION_INFORMATION ConfigInfo,
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OUT PBOOLEAN Again
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||
);
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BOOLEAN
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Wd7000ExInitialize(
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IN PVOID DeviceExtension
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||
);
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BOOLEAN
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||
Wd7000ExStartIo(
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IN PVOID DeviceExtension,
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IN PSCSI_REQUEST_BLOCK Srb
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||
);
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BOOLEAN
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Wd7000ExInterrupt(
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IN PVOID DeviceExtension
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||
);
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BOOLEAN
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Wd7000ExResetBus(
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IN PVOID HwDeviceExtension,
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IN ULONG PathId
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);
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//
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// This function is called from Wd7000ExStartIo.
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//
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VOID
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BuildCcb(
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IN PHW_DEVICE_EXTENSION DeviceExtension,
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IN PSCSI_REQUEST_BLOCK Srb
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);
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//
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// This function is called from BuildCcb.
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//
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VOID
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BuildSdl(
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IN PHW_DEVICE_EXTENSION DeviceExtension,
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IN PSCSI_REQUEST_BLOCK Srb
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);
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//
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// This function is called from Wd7000Initialize.
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//
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BOOLEAN
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AdapterPresent(
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IN PVOID HwDeviceExtension,
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IN OUT PPORT_CONFIGURATION_INFORMATION ConfigInfo,
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IN OUT PULONG AdapterCount
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);
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BOOLEAN
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SendCommand(
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IN UCHAR Opcode,
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IN ULONG Address,
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IN PHW_DEVICE_EXTENSION DeviceExtension
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);
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BOOLEAN
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Wd7000ExAdapterState(
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IN PVOID DeviceExtension,
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IN PVOID AdaptersFound,
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IN BOOLEAN SaveState
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)
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/*++
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Routine Description:
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Saves/restores adapter's real-mode configuration state.
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Arguments:
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DeviceExtension - Adapter object device extension.
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AdaptersFound - Passed through from DriverEntry as additional
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context for the call.
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SaveState - TRUE = Save adapter state, FALSE = restore state.
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Return Value:
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The spec did not intend for this routine to have a return value.
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Whoever did the header file just forgot to change the BOOLEAN to
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a VOID. We will just return FALSE to shot the compiler up.
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--*/
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{
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PHW_DEVICE_EXTENSION deviceExtension = DeviceExtension;
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if (SaveState) {
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//
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// Remember system interrupt state.
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//
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deviceExtension->InterruptState = ScsiPortReadPortUchar(
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&deviceExtension->EisaController->SystemInterruptEnable);
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} else {
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//
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// Restore system interrupt state.
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//
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ScsiPortWritePortUchar(&deviceExtension->EisaController->SystemInterruptEnable,
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deviceExtension->InterruptState);
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}
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return FALSE;
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}
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ULONG
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DriverEntry (
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IN PVOID DriverObject,
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IN PVOID Argument2
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||
)
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/*++
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Routine Description:
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Installable driver initialization entry point for system.
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Arguments:
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Driver Object
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Argument2 - Not used.
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Return Value:
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Status from ScsiPortInitialize()
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--*/
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{
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HW_INITIALIZATION_DATA hwInitializationData;
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ULONG AdapterCount = 0;
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ULONG i;
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DebugPrint((1,"\n\nSCSI WD7000EX MiniPort Driver\n"));
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//
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// Zero out structure.
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//
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for (i=0; i<sizeof(HW_INITIALIZATION_DATA); i++) {
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((PUCHAR)&hwInitializationData)[i] = 0;
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}
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//
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// Set size of hwInitializationData.
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//
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hwInitializationData.HwInitializationDataSize = sizeof(HW_INITIALIZATION_DATA);
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//
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// Set entry points.
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//
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hwInitializationData.HwInitialize = Wd7000ExInitialize;
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hwInitializationData.HwFindAdapter = Wd7000ExFindAdapter;
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hwInitializationData.HwStartIo = Wd7000ExStartIo;
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hwInitializationData.HwInterrupt = Wd7000ExInterrupt;
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hwInitializationData.HwResetBus = Wd7000ExResetBus;
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hwInitializationData.HwAdapterState = Wd7000ExAdapterState;
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//
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// Set number of access ranges and bus type.
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//
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hwInitializationData.NumberOfAccessRanges = 1;
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hwInitializationData.AdapterInterfaceType = Eisa;
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//
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// Indicate no buffer mapping but will need physical addresses.
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//
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hwInitializationData.NeedPhysicalAddresses = TRUE;
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//
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// Specify size of extensions.
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//
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hwInitializationData.DeviceExtensionSize = sizeof(HW_DEVICE_EXTENSION);
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//
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// Ask for SRB extensions for CCBs.
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//
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hwInitializationData.SrbExtensionSize = sizeof(CCB);
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return ScsiPortInitialize(DriverObject, Argument2, &hwInitializationData, &AdapterCount);
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} // end DriverEntry()
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BOOLEAN
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AdapterPresent(
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IN PVOID HwDeviceExtension,
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IN OUT PPORT_CONFIGURATION_INFORMATION ConfigInfo,
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||
IN OUT PULONG AdapterCount
|
||
)
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||
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/*++
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||
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Routine Description:
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Determine if WD7000EX SCSI adapter is installed in system
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by reading the EISA board configuration registers for each
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EISA slot looking for the correct signature.
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Arguments:
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HwDeviceExtension - HBA miniport driver's adapter data storage
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ConfigInfo - Supplies the configuration information stucture. If an
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adapter is found the access range is update.
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AdapterCount - Supplies the count of slots which have already been checked.
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||
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Return Value:
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TRUE if adapter present.
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||
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--*/
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||
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{
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PHW_DEVICE_EXTENSION deviceExtension = HwDeviceExtension;
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||
ULONG eisaSlotNumber;
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PEISA_CONTROLLER eisaController;
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//
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// Check to see if adapter present in system.
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//
|
||
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for (eisaSlotNumber=*AdapterCount + 1; eisaSlotNumber<MAXIMUM_EISA_SLOTS; eisaSlotNumber++) {
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//
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// Update the adapter count.
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||
//
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||
|
||
(*AdapterCount)++;
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||
|
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//
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||
// Get the system address for this card. The card uses I/O space.
|
||
// If ConfigInfo already has default information about this
|
||
// controller, use it. If not, then we derive our own. This
|
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// is for Chicago compatibility.
|
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//
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if (ScsiPortConvertPhysicalAddressToUlong(
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(*ConfigInfo->AccessRanges)[0].RangeStart) != 0) {
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||
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eisaController = ScsiPortGetDeviceBase(
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||
deviceExtension,
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ConfigInfo->AdapterInterfaceType,
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||
ConfigInfo->SystemIoBusNumber,
|
||
(*ConfigInfo->AccessRanges)[0].RangeStart,
|
||
(*ConfigInfo->AccessRanges)[0].RangeLength,
|
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(BOOLEAN) !((*ConfigInfo->AccessRanges)[0].RangeInMemory));
|
||
} else {
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||
|
||
eisaController = ScsiPortGetDeviceBase(
|
||
deviceExtension,
|
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ConfigInfo->AdapterInterfaceType,
|
||
ConfigInfo->SystemIoBusNumber,
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ScsiPortConvertUlongToPhysicalAddress(0x1000 * eisaSlotNumber),
|
||
0x1000,
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||
TRUE);
|
||
}
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||
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eisaController =
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(PEISA_CONTROLLER)((PUCHAR)eisaController + EISA_ADDRESS_BASE);
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if ((ScsiPortReadPortUchar(&eisaController->BoardId[0]) == 0x5C) &&
|
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(ScsiPortReadPortUchar(&eisaController->BoardId[1]) == 0x83) &&
|
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(ScsiPortReadPortUchar(&eisaController->BoardId[2]) == 0x20)) {
|
||
|
||
deviceExtension->EisaController = eisaController;
|
||
|
||
return TRUE;
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||
}
|
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|
||
//
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// The card is not here so clean up.
|
||
//
|
||
|
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ScsiPortFreeDeviceBase(deviceExtension,
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(PUCHAR)eisaController - EISA_ADDRESS_BASE);
|
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|
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} // end for (eisaSlotNumber ...
|
||
|
||
//
|
||
// Clear the adapter count for the next bus.
|
||
//
|
||
|
||
*AdapterCount = 0;
|
||
|
||
return FALSE;
|
||
|
||
} // end AdapterPresent()
|
||
|
||
|
||
ULONG
|
||
Wd7000ExFindAdapter(
|
||
IN PVOID HwDeviceExtension,
|
||
IN PVOID Context,
|
||
IN PVOID BusInformation,
|
||
IN PCHAR ArgumentString,
|
||
IN OUT PPORT_CONFIGURATION_INFORMATION ConfigInfo,
|
||
OUT PBOOLEAN Again
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
This function is called by the OS-specific port driver after
|
||
the necessary storage has been allocated, to gather information
|
||
about the adapter's configuration.
|
||
|
||
Arguments:
|
||
|
||
HwDeviceExtension - HBA miniport driver's adapter data storage
|
||
ConfigInfo - Configuration information structure describing HBA
|
||
|
||
Return Value:
|
||
|
||
TRUE if adapter present in system
|
||
|
||
--*/
|
||
|
||
{
|
||
PHW_DEVICE_EXTENSION deviceExtension = HwDeviceExtension;
|
||
PEISA_CONTROLLER eisaController;
|
||
PULONG adapterCount = Context;
|
||
PNONCACHED_EXTENSION ncExtension;
|
||
ULONG eisaSlotNumber;
|
||
PICB icb;
|
||
PADAPTER_INQUIRY adapterInquiry;
|
||
ULONG physicalIcb;
|
||
ULONG i;
|
||
ULONG length;
|
||
UCHAR status;
|
||
|
||
//
|
||
// Check to see if adapter present in system.
|
||
//
|
||
if (!AdapterPresent(deviceExtension, ConfigInfo, Context)) {
|
||
DebugPrint((1,"Wd7000EX: SCSI adapter not present\n"));
|
||
*Again = FALSE;
|
||
return SP_RETURN_NOT_FOUND;
|
||
}
|
||
|
||
//
|
||
// There is still more to look at.
|
||
//
|
||
|
||
*Again = FALSE;
|
||
|
||
//
|
||
// Fill in the access array information only if there are no
|
||
// default parameters already there.
|
||
//
|
||
if (ScsiPortConvertPhysicalAddressToUlong(
|
||
(*ConfigInfo->AccessRanges)[0].RangeStart) == 0) {
|
||
|
||
*Again = TRUE;
|
||
(*ConfigInfo->AccessRanges)[0].RangeStart =
|
||
ScsiPortConvertUlongToPhysicalAddress(0x1000 * (*((PULONG) Context)) + EISA_ADDRESS_BASE);
|
||
(*ConfigInfo->AccessRanges)[0].RangeLength = sizeof(EISA_CONTROLLER);
|
||
(*ConfigInfo->AccessRanges)[0].RangeInMemory = FALSE;
|
||
|
||
//
|
||
// Indicate maximum transfer length in bytes.
|
||
//
|
||
ConfigInfo->MaximumTransferLength = MAXIMUM_TRANSFER_SIZE;
|
||
|
||
//
|
||
// Maximum number of physical segments is 32.
|
||
//
|
||
ConfigInfo->NumberOfPhysicalBreaks = MAXIMUM_SDL_SIZE;
|
||
|
||
//
|
||
// Set the configuration parameters for this card.
|
||
//
|
||
|
||
ConfigInfo->NumberOfBuses = 1;
|
||
deviceExtension->NumberOfBuses = 1;
|
||
ConfigInfo->ScatterGather = TRUE;
|
||
ConfigInfo->Master = TRUE;
|
||
|
||
//
|
||
// Get a noncached extension for an adapter inquiry command.
|
||
//
|
||
|
||
ncExtension = ScsiPortGetUncachedExtension(
|
||
deviceExtension,
|
||
ConfigInfo,
|
||
sizeof(NONCACHED_EXTENSION));
|
||
|
||
if (ncExtension == NULL) {
|
||
|
||
//
|
||
// Log error.
|
||
//
|
||
|
||
ScsiPortLogError(
|
||
deviceExtension,
|
||
NULL,
|
||
0,
|
||
0,
|
||
0,
|
||
SP_INTERNAL_ADAPTER_ERROR,
|
||
6 << 16
|
||
);
|
||
|
||
return SP_RETURN_ERROR;
|
||
}
|
||
|
||
length = sizeof(NONCACHED_EXTENSION);
|
||
|
||
//
|
||
// Convert virtual to physical address.
|
||
//
|
||
|
||
physicalIcb = ScsiPortConvertPhysicalAddressToUlong(
|
||
ScsiPortGetPhysicalAddress(deviceExtension,
|
||
NULL,
|
||
ncExtension,
|
||
&length));
|
||
|
||
//
|
||
// Initialize the pointers.
|
||
//
|
||
|
||
icb = &ncExtension->Icb;
|
||
adapterInquiry = &ncExtension->AdapterInquiry;
|
||
|
||
//
|
||
// Create ICB for Adapter Inquiry Command.
|
||
//
|
||
|
||
icb->IcbFlags = 0;
|
||
icb->CompletionStatus = 0;
|
||
icb->Reserved = 0;
|
||
icb->DataBufferAddress = ScsiPortConvertPhysicalAddressToUlong(
|
||
ScsiPortGetPhysicalAddress(
|
||
deviceExtension,
|
||
NULL,
|
||
adapterInquiry,
|
||
&length));
|
||
|
||
icb->TransferCount = sizeof(ADAPTER_INQUIRY);
|
||
|
||
icb->OpCode = ADAPTER_INQUIRY_COMMAND;
|
||
|
||
//
|
||
// Get ICB physical address.
|
||
//
|
||
|
||
physicalIcb = ScsiPortConvertPhysicalAddressToUlong(
|
||
ScsiPortGetPhysicalAddress(
|
||
deviceExtension,
|
||
NULL,
|
||
icb,
|
||
&length));
|
||
|
||
//
|
||
// Disable system interrupts.
|
||
//
|
||
|
||
ScsiPortWritePortUchar(&deviceExtension->EisaController->SystemInterruptEnable,
|
||
SYSTEM_INTERRUPTS_DISABLE);
|
||
|
||
//
|
||
// Write ICB physical address and command to mailbox.
|
||
//
|
||
|
||
SendCommand(PROCESS_ICB,
|
||
physicalIcb,
|
||
deviceExtension);
|
||
|
||
//
|
||
// Poll for ICB completion.
|
||
//
|
||
|
||
i = 0;
|
||
while ((status =
|
||
ScsiPortReadPortUchar(
|
||
&deviceExtension->EisaController->ResponseRegister)) == 0) {
|
||
|
||
i++;
|
||
|
||
if (i > 100000) {
|
||
|
||
break;
|
||
}
|
||
|
||
ScsiPortStallExecution(10);
|
||
}
|
||
|
||
if (status == 0) {
|
||
|
||
//
|
||
// The request timed out. Log an error and return.
|
||
//
|
||
|
||
ScsiPortLogError(
|
||
deviceExtension,
|
||
NULL,
|
||
0,
|
||
0,
|
||
0,
|
||
SP_INTERNAL_ADAPTER_ERROR,
|
||
7 << 16
|
||
);
|
||
return SP_RETURN_ERROR;
|
||
}
|
||
|
||
DebugPrint((1, "Wd7000ExFindAdapter: Get configuration request time = %d.\n", i * 10));
|
||
|
||
//
|
||
// Acknowledge interrupt.
|
||
//
|
||
|
||
ScsiPortWritePortUchar(&deviceExtension->EisaController->ResponseRegister, 0xFF);
|
||
|
||
//
|
||
// Enable system interrupts.
|
||
//
|
||
|
||
ScsiPortWritePortUchar(&deviceExtension->EisaController->SystemInterruptEnable,
|
||
SYSTEM_INTERRUPTS_ENABLE);
|
||
|
||
//
|
||
// Check returned status for success.
|
||
//
|
||
|
||
if (status != COMPLETE_SUCCESS) {
|
||
|
||
//
|
||
// Give up.
|
||
//
|
||
|
||
DebugPrint((1,"Wd7000Ex: Response register %x\n", status));
|
||
DebugPrint((1,"Wd7000Ex: Adapter inquiry failed\n"));
|
||
|
||
//
|
||
// Log error.
|
||
//
|
||
|
||
ScsiPortLogError(
|
||
deviceExtension,
|
||
NULL,
|
||
0,
|
||
0,
|
||
0,
|
||
SP_INTERNAL_ADAPTER_ERROR,
|
||
8 << 16
|
||
);
|
||
|
||
return SP_RETURN_ERROR;
|
||
}
|
||
|
||
//
|
||
// NOTE: Delay here. I don't understand this latency between
|
||
// when the device interrupts and the status of the ICB
|
||
// is success and when the data is actually available in
|
||
// the buffer.
|
||
//
|
||
|
||
ScsiPortStallExecution(300);
|
||
|
||
if (adapterInquiry->AdapterInformation & DUAL_CHANNEL) {
|
||
|
||
//
|
||
// There are two buses on the adapter.
|
||
//
|
||
|
||
ConfigInfo->InitiatorBusId[1] =
|
||
(adapterInquiry->ChannelInformation >> 4) & BUS_ID_MASK;
|
||
ConfigInfo->NumberOfBuses = 2;
|
||
deviceExtension->NumberOfBuses = 2;
|
||
}
|
||
|
||
ConfigInfo->InitiatorBusId[0] =
|
||
adapterInquiry->ChannelInformation & BUS_ID_MASK;
|
||
ConfigInfo->BusInterruptLevel = adapterInquiry->Irq;
|
||
}
|
||
deviceExtension->HostTargetId = ConfigInfo->InitiatorBusId[0];
|
||
return SP_RETURN_FOUND;
|
||
} // end Wd7000ExFindAdapter()
|
||
|
||
|
||
BOOLEAN
|
||
Wd7000ExInitialize(
|
||
IN PVOID HwDeviceExtension
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
Inititialize adapter and mailbox.
|
||
|
||
Arguments:
|
||
|
||
HwDeviceExtension - HBA miniport driver's adapter data storage
|
||
|
||
Return Value:
|
||
|
||
TRUE - if initialization successful.
|
||
FALSE - if initialization unsuccessful.
|
||
|
||
--*/
|
||
|
||
{
|
||
PHW_DEVICE_EXTENSION deviceExtension = HwDeviceExtension;
|
||
BOOLEAN returnValue;
|
||
|
||
//
|
||
// Reset Wd7000Ex and SCSI bus.
|
||
//
|
||
|
||
returnValue = Wd7000ExResetBus(deviceExtension, 0);
|
||
ScsiPortNotification(
|
||
ResetDetected,
|
||
deviceExtension,
|
||
0
|
||
);
|
||
|
||
if (deviceExtension->NumberOfBuses == 2) {
|
||
|
||
Wd7000ExResetBus(deviceExtension, 1);
|
||
ScsiPortNotification(
|
||
ResetDetected,
|
||
deviceExtension,
|
||
1
|
||
);
|
||
|
||
}
|
||
|
||
if (!returnValue) {
|
||
|
||
return FALSE;
|
||
|
||
} else {
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
} // end Wd7000ExInitialize()
|
||
|
||
|
||
BOOLEAN
|
||
Wd7000ExStartIo(
|
||
IN PVOID HwDeviceExtension,
|
||
IN PSCSI_REQUEST_BLOCK Srb
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
This routine is called from the SCSI port driver synchronized
|
||
with the kernel. The mailboxes are scanned for an empty one and
|
||
the CCB is written to it. Then the doorbell is rung and the
|
||
OS port driver is notified that the adapter can take
|
||
another request, if any are available.
|
||
|
||
Arguments:
|
||
|
||
HwDeviceExtension - HBA miniport driver's adapter data storage
|
||
Srb - IO request packet
|
||
|
||
Return Value:
|
||
|
||
Nothing
|
||
|
||
--*/
|
||
|
||
{
|
||
PHW_DEVICE_EXTENSION deviceExtension = HwDeviceExtension;
|
||
PEISA_CONTROLLER eisaController = deviceExtension->EisaController;
|
||
PCCB ccb;
|
||
UCHAR opCode;
|
||
ULONG physicalCcb;
|
||
ULONG length;
|
||
ULONG i = 0;
|
||
|
||
DebugPrint((3,"Wd7000ExStartIo: Enter routine\n"));
|
||
|
||
//
|
||
// Get CCB from SRB.
|
||
//
|
||
|
||
if (Srb->Function == SRB_FUNCTION_ABORT_COMMAND) {
|
||
|
||
//
|
||
// Get CCB to abort.
|
||
//
|
||
|
||
ccb = Srb->NextSrb->SrbExtension;
|
||
|
||
//
|
||
// Set abort SRB for completion.
|
||
//
|
||
|
||
ccb->AbortSrb = Srb;
|
||
|
||
} else {
|
||
|
||
ccb = Srb->SrbExtension;
|
||
|
||
//
|
||
// Save SRB back pointer in CCB.
|
||
//
|
||
|
||
ccb->SrbAddress = Srb;
|
||
}
|
||
|
||
//
|
||
// Get CCB physical address.
|
||
//
|
||
|
||
physicalCcb =
|
||
ScsiPortConvertPhysicalAddressToUlong(
|
||
ScsiPortGetPhysicalAddress(deviceExtension, NULL, ccb, &length));
|
||
|
||
//
|
||
// Assume physical address is contiguous for size of CCB.
|
||
//
|
||
|
||
ASSERT(length >= sizeof(CCB));
|
||
|
||
switch (Srb->Function) {
|
||
|
||
case SRB_FUNCTION_EXECUTE_SCSI:
|
||
|
||
//
|
||
// Build CCB.
|
||
//
|
||
|
||
BuildCcb(deviceExtension, Srb);
|
||
|
||
//
|
||
// Or in PathId.
|
||
//
|
||
|
||
opCode = PROCESS_CCB | Srb->PathId << 6;
|
||
|
||
break;
|
||
|
||
case SRB_FUNCTION_ABORT_COMMAND:
|
||
|
||
DebugPrint((1, "Wd7000ExStartIo: Abort request received\n"));
|
||
|
||
//
|
||
// NOTE: Race condition if aborts occur
|
||
// (what if CCB to be aborted
|
||
// completes after setting new SrbAddress?)
|
||
//
|
||
|
||
opCode = ABORT_CCB;
|
||
|
||
break;
|
||
|
||
case SRB_FUNCTION_RESET_BUS:
|
||
|
||
//
|
||
// Reset Wd7000Ex and SCSI bus.
|
||
//
|
||
|
||
DebugPrint((1, "Wd7000ExStartIo: Reset bus request received\n"));
|
||
|
||
Wd7000ExResetBus(deviceExtension,
|
||
Srb->PathId);
|
||
|
||
return TRUE;
|
||
|
||
case SRB_FUNCTION_RESET_DEVICE:
|
||
|
||
break;
|
||
|
||
default:
|
||
|
||
//
|
||
// Set error, complete request
|
||
// and signal ready for next request.
|
||
//
|
||
|
||
Srb->SrbStatus = SRB_STATUS_INVALID_REQUEST;
|
||
|
||
ScsiPortNotification(RequestComplete,
|
||
deviceExtension,
|
||
Srb);
|
||
|
||
ScsiPortNotification(NextRequest,
|
||
deviceExtension,
|
||
NULL);
|
||
|
||
return TRUE;
|
||
|
||
} // end switch
|
||
|
||
SendCommand(opCode,
|
||
physicalCcb,
|
||
deviceExtension);
|
||
|
||
//
|
||
// Adapter ready for next request.
|
||
//
|
||
|
||
ScsiPortNotification(NextRequest,
|
||
deviceExtension,
|
||
NULL);
|
||
|
||
return TRUE;
|
||
|
||
} // end Wd7000ExStartIo()
|
||
|
||
|
||
BOOLEAN
|
||
Wd7000ExInterrupt(
|
||
IN PVOID HwDeviceExtension
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
This is the interrupt service routine for the WD7000EX SCSI adapter.
|
||
It reads the interrupt register to determine if the adapter is indeed
|
||
the source of the interrupt and clears the interrupt at the device.
|
||
If the adapter is interrupting because a mailbox is full, the CCB is
|
||
retrieved to complete the request.
|
||
|
||
Arguments:
|
||
|
||
HwDeviceExtension - HBA miniport driver's adapter data storage
|
||
|
||
Return Value:
|
||
|
||
TRUE if MailboxIn full
|
||
|
||
--*/
|
||
|
||
{
|
||
PHW_DEVICE_EXTENSION deviceExtension = HwDeviceExtension;
|
||
PCCB ccb;
|
||
PSCSI_REQUEST_BLOCK srb;
|
||
PSCSI_REQUEST_BLOCK abortedSrb;
|
||
PEISA_CONTROLLER eisaController = deviceExtension->EisaController;
|
||
ULONG logError = 0;
|
||
ULONG physicalCcb;
|
||
UCHAR srbStatus;
|
||
UCHAR response;
|
||
|
||
if (!(ScsiPortReadPortUchar(
|
||
&eisaController->SystemInterruptEnable) & SYSTEM_INTERRUPT_PENDING)) {
|
||
|
||
DebugPrint((2, "WD7000EX: Spurious interrupt\n"));
|
||
return FALSE;
|
||
}
|
||
|
||
//
|
||
// Get physical address of CCB.
|
||
//
|
||
|
||
physicalCcb = ScsiPortReadPortUlong(&eisaController->ResponseMailbox);
|
||
|
||
//
|
||
// Read status from response register.
|
||
//
|
||
|
||
response = ScsiPortReadPortUchar(&eisaController->ResponseRegister);
|
||
|
||
//
|
||
// Acknowledge interrupt.
|
||
//
|
||
|
||
ScsiPortWritePortUchar(&eisaController->ResponseRegister, 0xFF);
|
||
|
||
//
|
||
// Get virtual CCB address.
|
||
//
|
||
|
||
ccb = ScsiPortGetVirtualAddress(deviceExtension, ScsiPortConvertUlongToPhysicalAddress(physicalCcb));
|
||
|
||
//
|
||
// Make sure the ccb is valid, if it is supposed to be.
|
||
//
|
||
|
||
if (ccb == NULL &&
|
||
response != ABORT_COMMAND_COMPLETE &&
|
||
response != BUS_RESET &&
|
||
response != RESET_DEVICE_COMPLETE &&
|
||
response != ABORT_CCB_NOT_FOUND) {
|
||
|
||
ScsiPortLogError(
|
||
HwDeviceExtension,
|
||
NULL,
|
||
0,
|
||
deviceExtension->HostTargetId,
|
||
0,
|
||
SP_INTERNAL_ADAPTER_ERROR,
|
||
(5 << 16) | response
|
||
);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
switch (response & STATUS_MASK) {
|
||
|
||
case COMPLETE_SUCCESS:
|
||
case REQUEST_SENSE_COMPLETE:
|
||
|
||
DebugPrint((3, "Wd7000ExInterrupt: Command complete\n"));
|
||
srbStatus = SRB_STATUS_SUCCESS;
|
||
|
||
break;
|
||
|
||
case COMPLETE_ERROR:
|
||
|
||
DebugPrint((2, "Wd7000ExInterrupt: Command complete with error\n"));
|
||
srbStatus = SRB_STATUS_ERROR;
|
||
|
||
break;
|
||
|
||
case BUS_RESET:
|
||
|
||
DebugPrint((3, "Wd7000ExInterrupt: Bus reset\n"));
|
||
srbStatus = SRB_STATUS_BUS_RESET;
|
||
|
||
return TRUE;
|
||
|
||
case ABORT_COMMAND_COMPLETE:
|
||
|
||
//
|
||
// This interrupt is not associated with a CCB.
|
||
//
|
||
|
||
DebugPrint((1, "Wd7000ExInterrupt: Command aborted\n"));
|
||
|
||
return TRUE;
|
||
|
||
case RESET_DEVICE_COMPLETE:
|
||
|
||
DebugPrint((3, "Wd7000ExInterrupt: Device reset complete\n"));
|
||
srbStatus = SRB_STATUS_SUCCESS;
|
||
|
||
break;
|
||
|
||
case COMMAND_ABORTED:
|
||
|
||
DebugPrint((1, "Wd7000ExInterrupt: Abort command complete\n"));
|
||
|
||
//
|
||
// Get SRB from CCB.
|
||
//
|
||
|
||
srb = ccb->SrbAddress;
|
||
|
||
//
|
||
// Get aborted SRB.
|
||
//
|
||
|
||
abortedSrb = ccb->AbortSrb;
|
||
|
||
//
|
||
// Update the abort SRB status.
|
||
//
|
||
|
||
abortedSrb->SrbStatus = SRB_STATUS_SUCCESS;
|
||
|
||
//
|
||
// Call notification routine for the aborted SRB.
|
||
//
|
||
|
||
ScsiPortNotification(RequestComplete,
|
||
(PVOID)deviceExtension,
|
||
abortedSrb);
|
||
|
||
//
|
||
// Update status of the aborted SRB.
|
||
//
|
||
|
||
srbStatus = SRB_STATUS_TIMEOUT;
|
||
|
||
break;
|
||
|
||
case ABORT_CCB_NOT_FOUND:
|
||
|
||
//
|
||
// This normally occurs when the adapter has started processing
|
||
// the request. Drop it on the floor and let the abort time out.
|
||
//
|
||
|
||
DebugPrint((1, "Wd7000ExInterrupt: Abort command failed\n"));
|
||
return TRUE;
|
||
|
||
case ILLEGAL_STATUS:
|
||
|
||
DebugPrint((3, "Wd7000ExInterrupt: Illegal status\n"));
|
||
logError = SP_INTERNAL_ADAPTER_ERROR;
|
||
srbStatus = SRB_STATUS_ERROR;
|
||
|
||
break;
|
||
|
||
case DEVICE_TIMEOUT:
|
||
|
||
DebugPrint((3, "Wd7000ExInterrupt: Device timeout\n"));
|
||
srbStatus = SRB_STATUS_SELECTION_TIMEOUT;
|
||
|
||
break;
|
||
|
||
case SHORT_RECORD_EXCEPTION:
|
||
|
||
DebugPrint((3, "Wd7000ExInterrupt: Data record short\n"));
|
||
|
||
srb = ccb->SrbAddress;
|
||
if (ccb->ScsiDeviceStatus == SCSISTAT_CHECK_CONDITION) {
|
||
srbStatus = SRB_STATUS_ERROR;
|
||
} else {
|
||
srbStatus = SRB_STATUS_DATA_OVERRUN;
|
||
|
||
//
|
||
// Update SRB with actual number of bytes transferred.
|
||
//
|
||
|
||
srb->DataTransferLength -= ccb->TransferCount;
|
||
}
|
||
|
||
break;
|
||
|
||
case LONG_RECORD_EXCEPTION:
|
||
|
||
DebugPrint((3, "Wd7000ExInterrupt: Data overrun\n"));
|
||
logError = SP_INTERNAL_ADAPTER_ERROR;
|
||
|
||
srbStatus = SRB_STATUS_DATA_OVERRUN;
|
||
|
||
break;
|
||
|
||
case PARITY_ERROR:
|
||
|
||
DebugPrint((3, "Wd7000ExInterrupt: Parity error\n"));
|
||
logError = SP_BUS_PARITY_ERROR;
|
||
srbStatus = SRB_STATUS_PARITY_ERROR;
|
||
|
||
break;
|
||
|
||
case UNEXPECTED_BUS_FREE:
|
||
|
||
DebugPrint((3, "Wd7000ExInterrupt: Unexpected bus free\n"));
|
||
logError = SP_UNEXPECTED_DISCONNECT;
|
||
srbStatus = SRB_STATUS_UNEXPECTED_BUS_FREE;
|
||
|
||
break;
|
||
|
||
case INVALID_STATE:
|
||
|
||
DebugPrint((3, "Wd7000ExInterrupt: Phase sequence error\n"));
|
||
logError = SP_INTERNAL_ADAPTER_ERROR;
|
||
srbStatus = SRB_STATUS_PHASE_SEQUENCE_FAILURE;
|
||
|
||
break;
|
||
|
||
case HOST_DMA_ERROR:
|
||
|
||
DebugPrint((3, "Wd7000ExInterrupt: Host DMA error\n"));
|
||
logError = SP_INTERNAL_ADAPTER_ERROR;
|
||
srbStatus = SRB_STATUS_ERROR;
|
||
|
||
break;
|
||
|
||
case INVALID_COMMAND:
|
||
|
||
DebugPrint((3, "Wd7000ExInterrupt: Invalid command\n"));
|
||
logError = SP_INTERNAL_ADAPTER_ERROR;
|
||
srbStatus = SRB_STATUS_ERROR;
|
||
|
||
break;
|
||
|
||
case INCORRECT_COMMAND_DIRECTION:
|
||
default:
|
||
|
||
DebugPrint((3, "Wd7000ExInterrupt: Incorrect command direction\n"));
|
||
logError = SP_INTERNAL_ADAPTER_ERROR;
|
||
srbStatus = SRB_STATUS_ERROR;
|
||
|
||
break;
|
||
|
||
} // end switch
|
||
|
||
//
|
||
// Get SRB from CCB.
|
||
//
|
||
|
||
srb = ccb->SrbAddress;
|
||
|
||
//
|
||
// Update SRB status.
|
||
//
|
||
|
||
srb->SrbStatus = srbStatus;
|
||
|
||
//
|
||
// Copy SCSI status from CCB to SRB.
|
||
//
|
||
|
||
srb->ScsiStatus = ccb->ScsiDeviceStatus;
|
||
|
||
if (logError != 0) {
|
||
|
||
//
|
||
// Log error.
|
||
//
|
||
|
||
ScsiPortLogError(
|
||
deviceExtension,
|
||
srb,
|
||
srb->PathId,
|
||
srb->TargetId,
|
||
srb->Lun,
|
||
logError,
|
||
2 << 16 | response
|
||
);
|
||
|
||
}
|
||
|
||
//
|
||
// Call notification routine for the SRB.
|
||
//
|
||
|
||
ScsiPortNotification(RequestComplete,
|
||
(PVOID)deviceExtension,
|
||
srb);
|
||
|
||
return TRUE;
|
||
|
||
} // end Wd7000ExInterrupt()
|
||
|
||
|
||
VOID
|
||
BuildCcb(
|
||
IN PHW_DEVICE_EXTENSION DeviceExtension,
|
||
IN PSCSI_REQUEST_BLOCK Srb
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
Build CCB for WD7000EX.
|
||
|
||
Arguments:
|
||
|
||
DeviceExtenson
|
||
SRB
|
||
|
||
Return Value:
|
||
|
||
Nothing.
|
||
|
||
--*/
|
||
|
||
{
|
||
PCCB ccb = Srb->SrbExtension;
|
||
|
||
DebugPrint((3,"BuildCcb: Enter routine\n"));
|
||
|
||
//
|
||
// Zero out CCB statuses.
|
||
//
|
||
|
||
ccb->CompletionStatus = 0;
|
||
ccb->ScsiDeviceStatus = 0;
|
||
|
||
//
|
||
// Set transfer direction bit.
|
||
//
|
||
|
||
if (Srb->SrbFlags & SRB_FLAGS_DATA_OUT) {
|
||
ccb->CommandFlags = DIRECTION_WRITE | SCATTER_GATHER;
|
||
} else if (Srb->SrbFlags & SRB_FLAGS_DATA_IN) {
|
||
ccb->CommandFlags = DIRECTION_READ | SCATTER_GATHER;
|
||
} else {
|
||
ccb->CommandFlags = 0;
|
||
}
|
||
|
||
//
|
||
// Check if disconnect explicity forbidden.
|
||
//
|
||
|
||
if (!(Srb->SrbFlags & SRB_FLAGS_DISABLE_DISCONNECT)) {
|
||
|
||
ccb->CommandFlags |= DISCONNECTION;
|
||
}
|
||
|
||
//
|
||
// Check if synchronous data transfers are allowed.
|
||
//
|
||
|
||
if (!(Srb->SrbFlags & SRB_FLAGS_DISABLE_SYNCH_TRANSFER)) {
|
||
|
||
ccb->CommandFlags |= SYNCHRONOUS_NEGOCIATION;
|
||
|
||
}
|
||
|
||
//
|
||
// Set target id and LUN.
|
||
// PathId is indicated in upper bits of command byte.
|
||
//
|
||
|
||
ccb->TargetId = Srb->TargetId;
|
||
ccb->Lun = Srb->Lun;
|
||
|
||
//
|
||
// Set CDB length and copy to CCB.
|
||
//
|
||
|
||
ScsiPortMoveMemory(ccb->Cdb, Srb->Cdb, Srb->CdbLength);
|
||
|
||
//
|
||
// Build SDL in CCB if data transfer.
|
||
//
|
||
|
||
if (Srb->DataTransferLength > 0) {
|
||
BuildSdl(DeviceExtension, Srb);
|
||
} else {
|
||
ccb->DataBufferAddress = 0;
|
||
ccb->TransferCount = 0;
|
||
}
|
||
|
||
return;
|
||
|
||
} // end BuildCcb()
|
||
|
||
|
||
VOID
|
||
BuildSdl(
|
||
IN PHW_DEVICE_EXTENSION DeviceExtension,
|
||
IN PSCSI_REQUEST_BLOCK Srb
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
This routine builds a scatter/gather descriptor list for the CCB.
|
||
|
||
Arguments:
|
||
|
||
DeviceExtension
|
||
Srb
|
||
|
||
Return Value:
|
||
|
||
None
|
||
|
||
--*/
|
||
|
||
{
|
||
PVOID dataPointer = Srb->DataBuffer;
|
||
ULONG bytesLeft = Srb->DataTransferLength;
|
||
PCCB ccb = Srb->SrbExtension;
|
||
PSDL sdl = &ccb->Sdl;
|
||
ULONG physicalSdl;
|
||
ULONG physicalAddress;
|
||
ULONG length;
|
||
ULONG descriptorCount = 0;
|
||
|
||
DebugPrint((3,"BuildSdl: Enter routine\n"));
|
||
|
||
//
|
||
// Get physical SDL address.
|
||
//
|
||
|
||
physicalSdl = ScsiPortConvertPhysicalAddressToUlong(
|
||
ScsiPortGetPhysicalAddress(DeviceExtension, NULL,
|
||
sdl, &length));
|
||
|
||
//
|
||
// Assume physical memory contiguous for sizeof(SDL) bytes.
|
||
//
|
||
|
||
ASSERT(length >= sizeof(SDL));
|
||
|
||
//
|
||
// Create SDL segment descriptors.
|
||
//
|
||
|
||
do {
|
||
|
||
DebugPrint((3, "BuildSdl: Data buffer %lx\n", dataPointer));
|
||
|
||
//
|
||
// Get physical address and length of contiguous
|
||
// physical buffer.
|
||
//
|
||
|
||
physicalAddress =
|
||
ScsiPortConvertPhysicalAddressToUlong(
|
||
ScsiPortGetPhysicalAddress(DeviceExtension,
|
||
Srb,
|
||
dataPointer,
|
||
&length));
|
||
|
||
DebugPrint((3, "BuildSdl: Physical address %lx\n", physicalAddress));
|
||
DebugPrint((3, "BuildSdl: Data length %lx\n", length));
|
||
DebugPrint((3, "BuildSdl: Bytes left %lx\n", bytesLeft));
|
||
|
||
//
|
||
// If length of physical memory is more
|
||
// than bytes left in transfer, use bytes
|
||
// left as final length.
|
||
//
|
||
|
||
if (length > bytesLeft) {
|
||
length = bytesLeft;
|
||
}
|
||
|
||
sdl->Descriptor[descriptorCount].Address = physicalAddress;
|
||
sdl->Descriptor[descriptorCount].Length = length;
|
||
|
||
//
|
||
// Adjust counts.
|
||
//
|
||
|
||
dataPointer = (PUCHAR)dataPointer + length;
|
||
bytesLeft -= length;
|
||
descriptorCount++;
|
||
|
||
} while (bytesLeft);
|
||
|
||
//
|
||
// Write SDL length to CCB.
|
||
//
|
||
|
||
ccb->TransferCount = descriptorCount * sizeof(SG_DESCRIPTOR);
|
||
|
||
DebugPrint((3,"BuildSdl: SDL length is %d\n", descriptorCount));
|
||
|
||
//
|
||
// Write SDL address to CCB.
|
||
//
|
||
|
||
ccb->DataBufferAddress = physicalSdl;
|
||
|
||
DebugPrint((3,"BuildSdl: SDL address is %lx\n", sdl));
|
||
|
||
DebugPrint((3,"BuildSdl: CCB address is %lx\n", ccb));
|
||
|
||
return;
|
||
|
||
} // end BuildSdl()
|
||
|
||
|
||
BOOLEAN
|
||
Wd7000ExResetBus(
|
||
IN PVOID HwDeviceExtension,
|
||
IN ULONG PathId
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
Reset Wd7000Ex SCSI adapter and SCSI bus.
|
||
|
||
Arguments:
|
||
|
||
HwDeviceExtension - HBA miniport driver's adapter data storage
|
||
|
||
Return Value:
|
||
|
||
Nothing.
|
||
|
||
--*/
|
||
|
||
{
|
||
PHW_DEVICE_EXTENSION deviceExtension = HwDeviceExtension;
|
||
PEISA_CONTROLLER eisaController = deviceExtension->EisaController;
|
||
UCHAR control;
|
||
ULONG i;
|
||
|
||
DebugPrint((2,"ResetBus: Reset Wd7000Ex and SCSI bus\n"));
|
||
|
||
//
|
||
// Disable system interrupts.
|
||
//
|
||
|
||
ScsiPortWritePortUchar(&eisaController->SystemInterruptEnable,
|
||
SYSTEM_INTERRUPTS_DISABLE);
|
||
|
||
//
|
||
// Set interrupt enable, SCSI bus reset bits in control register.
|
||
//
|
||
|
||
control = ADAPTER_INTERRUPT_ENABLE;
|
||
control += PathId == 0 ? SCSI_BUS_RESET_CHANNEL_0 : SCSI_BUS_RESET_CHANNEL_1;
|
||
|
||
ScsiPortWritePortUchar(&eisaController->ControlRegister, control);
|
||
|
||
//
|
||
// Wait 30 microseconds.
|
||
//
|
||
|
||
ScsiPortStallExecution(30);
|
||
|
||
//
|
||
// Reset adapter and clear SCSI bus reset.
|
||
//
|
||
|
||
ScsiPortWritePortUchar(&eisaController->ControlRegister,
|
||
ADAPTER_RESET + ADAPTER_INTERRUPT_ENABLE);
|
||
|
||
//
|
||
// Wait for up to 2 seconds.
|
||
//
|
||
|
||
for (i=0; i<20; i++) {
|
||
|
||
//
|
||
// Stall 100 milliseconds.
|
||
//
|
||
|
||
ScsiPortStallExecution(100 * 1000);
|
||
|
||
//
|
||
// Check status.
|
||
//
|
||
|
||
if (ScsiPortReadPortUchar(&eisaController->ResponseRegister) ==
|
||
COMPLETE_SUCCESS) {
|
||
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (i==20) {
|
||
|
||
DebugPrint((1, "ResetBus: Reset failed\n"));
|
||
|
||
ScsiPortLogError(
|
||
deviceExtension,
|
||
NULL,
|
||
0,
|
||
deviceExtension->HostTargetId,
|
||
0,
|
||
SP_INTERNAL_ADAPTER_ERROR,
|
||
3 << 16
|
||
);
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
//
|
||
// Acknowledge interrupt.
|
||
//
|
||
|
||
ScsiPortWritePortUchar(&eisaController->ResponseRegister, 0xFF);
|
||
|
||
//
|
||
// Enable system interrupts.
|
||
//
|
||
|
||
ScsiPortWritePortUchar(&eisaController->SystemInterruptEnable,
|
||
SYSTEM_INTERRUPTS_ENABLE);
|
||
|
||
//
|
||
// Enable response interrupt mask.
|
||
//
|
||
|
||
ScsiPortWritePortUchar(&eisaController->ResponseInterruptMask, 0xFF);
|
||
|
||
//
|
||
// Complete all outstanding requests with SRB_STATUS_BUS_RESET.
|
||
//
|
||
|
||
ScsiPortCompleteRequest((PVOID) deviceExtension,
|
||
(UCHAR) PathId,
|
||
(UCHAR) 0xFF,
|
||
(UCHAR) 0xFF,
|
||
(UCHAR) SRB_STATUS_BUS_RESET);
|
||
|
||
return TRUE;
|
||
|
||
} // end Wd7000ExResetBus()
|
||
|
||
|
||
BOOLEAN
|
||
SendCommand(
|
||
IN UCHAR Opcode,
|
||
IN ULONG Address,
|
||
IN PHW_DEVICE_EXTENSION DeviceExtension
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
Send a command the the WD7000ex.
|
||
|
||
Arguments:
|
||
|
||
Opcode - Operation code to send.
|
||
|
||
Address - Physical address for the operation.
|
||
|
||
DeviceExtension - Pointer to device extension.
|
||
|
||
Return Value:
|
||
|
||
True if command sent.
|
||
False if adapter never reached 'ready for next command' state.
|
||
|
||
--*/
|
||
|
||
{
|
||
|
||
PEISA_CONTROLLER Registers = DeviceExtension->EisaController;
|
||
ULONG i;
|
||
|
||
for (i=0; i<1000; i++) {
|
||
|
||
UCHAR status;
|
||
|
||
status = ScsiPortReadPortUchar(&Registers->CommandRegister);
|
||
|
||
if (status == 0) {
|
||
|
||
//
|
||
// Adapter ready for next command.
|
||
//
|
||
|
||
break;
|
||
|
||
} else {
|
||
|
||
//
|
||
// Stall 1 microsecond before trying again.
|
||
//
|
||
|
||
ScsiPortStallExecution(1);
|
||
}
|
||
}
|
||
|
||
if (i == 100) {
|
||
|
||
//
|
||
// Timed out waiting for adapter to become ready.
|
||
// Do not complete this command. Instead, let it
|
||
// timeout so normal recovery will take place.
|
||
//
|
||
|
||
ScsiPortLogError(
|
||
DeviceExtension,
|
||
NULL,
|
||
0,
|
||
DeviceExtension->HostTargetId,
|
||
0,
|
||
SP_INTERNAL_ADAPTER_ERROR,
|
||
4 << 16
|
||
);
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
//
|
||
// Write the address and opcode to adapter.
|
||
//
|
||
|
||
ScsiPortWritePortUlong(&Registers->CommandMailbox, Address);
|
||
ScsiPortWritePortUchar(&Registers->CommandRegister, Opcode);
|
||
|
||
return TRUE;
|
||
|
||
} // end SendCommand()
|
||
|