/
BusLogic.c
3631 lines (3401 loc) · 148 KB
/
BusLogic.c
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/*
Linux Driver for BusLogic MultiMaster and FlashPoint SCSI Host Adapters
Copyright 1995-1998 by Leonard N. Zubkoff <lnz@dandelion.com>
This program is free software; you may redistribute and/or modify it under
the terms of the GNU General Public License Version 2 as published by the
Free Software Foundation.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for complete details.
The author respectfully requests that any modifications to this software be
sent directly to him for evaluation and testing.
Special thanks to Wayne Yen, Jin-Lon Hon, and Alex Win of BusLogic, whose
advice has been invaluable, to David Gentzel, for writing the original Linux
BusLogic driver, and to Paul Gortmaker, for being such a dedicated test site.
Finally, special thanks to Mylex/BusLogic for making the FlashPoint SCCB
Manager available as freely redistributable source code.
*/
#define BusLogic_DriverVersion "2.1.16"
#define BusLogic_DriverDate "18 July 2002"
#include <linux/module.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/types.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/mm.h>
#include <linux/stat.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/jiffies.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <scsi/scsicam.h>
#include <asm/dma.h>
#include <asm/io.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include "BusLogic.h"
#include "FlashPoint.c"
#ifndef FAILURE
#define FAILURE (-1)
#endif
static struct scsi_host_template Bus_Logic_template;
/*
BusLogic_DriverOptionsCount is a count of the number of BusLogic Driver
Options specifications provided via the Linux Kernel Command Line or via
the Loadable Kernel Module Installation Facility.
*/
static int BusLogic_DriverOptionsCount;
/*
BusLogic_DriverOptions is an array of Driver Options structures representing
BusLogic Driver Options specifications provided via the Linux Kernel Command
Line or via the Loadable Kernel Module Installation Facility.
*/
static struct BusLogic_DriverOptions BusLogic_DriverOptions[BusLogic_MaxHostAdapters];
/*
BusLogic can be assigned a string by insmod.
*/
MODULE_LICENSE("GPL");
#ifdef MODULE
static char *BusLogic;
module_param(BusLogic, charp, 0);
#endif
/*
BusLogic_ProbeOptions is a set of Probe Options to be applied across
all BusLogic Host Adapters.
*/
static struct BusLogic_ProbeOptions BusLogic_ProbeOptions;
/*
BusLogic_GlobalOptions is a set of Global Options to be applied across
all BusLogic Host Adapters.
*/
static struct BusLogic_GlobalOptions BusLogic_GlobalOptions;
static LIST_HEAD(BusLogic_host_list);
/*
BusLogic_ProbeInfoCount is the number of entries in BusLogic_ProbeInfoList.
*/
static int BusLogic_ProbeInfoCount;
/*
BusLogic_ProbeInfoList is the list of I/O Addresses and Bus Probe Information
to be checked for potential BusLogic Host Adapters. It is initialized by
interrogating the PCI Configuration Space on PCI machines as well as from the
list of standard BusLogic I/O Addresses.
*/
static struct BusLogic_ProbeInfo *BusLogic_ProbeInfoList;
/*
BusLogic_CommandFailureReason holds a string identifying the reason why a
call to BusLogic_Command failed. It is only non-NULL when BusLogic_Command
returns a failure code.
*/
static char *BusLogic_CommandFailureReason;
/*
BusLogic_AnnounceDriver announces the Driver Version and Date, Author's
Name, Copyright Notice, and Electronic Mail Address.
*/
static void BusLogic_AnnounceDriver(struct BusLogic_HostAdapter *HostAdapter)
{
BusLogic_Announce("***** BusLogic SCSI Driver Version " BusLogic_DriverVersion " of " BusLogic_DriverDate " *****\n", HostAdapter);
BusLogic_Announce("Copyright 1995-1998 by Leonard N. Zubkoff " "<lnz@dandelion.com>\n", HostAdapter);
}
/*
BusLogic_DriverInfo returns the Host Adapter Name to identify this SCSI
Driver and Host Adapter.
*/
static const char *BusLogic_DriverInfo(struct Scsi_Host *Host)
{
struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) Host->hostdata;
return HostAdapter->FullModelName;
}
/*
BusLogic_InitializeCCBs initializes a group of Command Control Blocks (CCBs)
for Host Adapter from the BlockSize bytes located at BlockPointer. The newly
created CCBs are added to Host Adapter's free list.
*/
static void BusLogic_InitializeCCBs(struct BusLogic_HostAdapter *HostAdapter, void *BlockPointer, int BlockSize, dma_addr_t BlockPointerHandle)
{
struct BusLogic_CCB *CCB = (struct BusLogic_CCB *) BlockPointer;
unsigned int offset = 0;
memset(BlockPointer, 0, BlockSize);
CCB->AllocationGroupHead = BlockPointerHandle;
CCB->AllocationGroupSize = BlockSize;
while ((BlockSize -= sizeof(struct BusLogic_CCB)) >= 0) {
CCB->Status = BusLogic_CCB_Free;
CCB->HostAdapter = HostAdapter;
CCB->DMA_Handle = (u32) BlockPointerHandle + offset;
if (BusLogic_FlashPointHostAdapterP(HostAdapter)) {
CCB->CallbackFunction = BusLogic_QueueCompletedCCB;
CCB->BaseAddress = HostAdapter->FlashPointInfo.BaseAddress;
}
CCB->Next = HostAdapter->Free_CCBs;
CCB->NextAll = HostAdapter->All_CCBs;
HostAdapter->Free_CCBs = CCB;
HostAdapter->All_CCBs = CCB;
HostAdapter->AllocatedCCBs++;
CCB++;
offset += sizeof(struct BusLogic_CCB);
}
}
/*
BusLogic_CreateInitialCCBs allocates the initial CCBs for Host Adapter.
*/
static bool __init BusLogic_CreateInitialCCBs(struct BusLogic_HostAdapter *HostAdapter)
{
int BlockSize = BusLogic_CCB_AllocationGroupSize * sizeof(struct BusLogic_CCB);
void *BlockPointer;
dma_addr_t BlockPointerHandle;
while (HostAdapter->AllocatedCCBs < HostAdapter->InitialCCBs) {
BlockPointer = pci_alloc_consistent(HostAdapter->PCI_Device, BlockSize, &BlockPointerHandle);
if (BlockPointer == NULL) {
BusLogic_Error("UNABLE TO ALLOCATE CCB GROUP - DETACHING\n", HostAdapter);
return false;
}
BusLogic_InitializeCCBs(HostAdapter, BlockPointer, BlockSize, BlockPointerHandle);
}
return true;
}
/*
BusLogic_DestroyCCBs deallocates the CCBs for Host Adapter.
*/
static void BusLogic_DestroyCCBs(struct BusLogic_HostAdapter *HostAdapter)
{
struct BusLogic_CCB *NextCCB = HostAdapter->All_CCBs, *CCB, *Last_CCB = NULL;
HostAdapter->All_CCBs = NULL;
HostAdapter->Free_CCBs = NULL;
while ((CCB = NextCCB) != NULL) {
NextCCB = CCB->NextAll;
if (CCB->AllocationGroupHead) {
if (Last_CCB)
pci_free_consistent(HostAdapter->PCI_Device, Last_CCB->AllocationGroupSize, Last_CCB, Last_CCB->AllocationGroupHead);
Last_CCB = CCB;
}
}
if (Last_CCB)
pci_free_consistent(HostAdapter->PCI_Device, Last_CCB->AllocationGroupSize, Last_CCB, Last_CCB->AllocationGroupHead);
}
/*
BusLogic_CreateAdditionalCCBs allocates Additional CCBs for Host Adapter. If
allocation fails and there are no remaining CCBs available, the Driver Queue
Depth is decreased to a known safe value to avoid potential deadlocks when
multiple host adapters share the same IRQ Channel.
*/
static void BusLogic_CreateAdditionalCCBs(struct BusLogic_HostAdapter *HostAdapter, int AdditionalCCBs, bool SuccessMessageP)
{
int BlockSize = BusLogic_CCB_AllocationGroupSize * sizeof(struct BusLogic_CCB);
int PreviouslyAllocated = HostAdapter->AllocatedCCBs;
void *BlockPointer;
dma_addr_t BlockPointerHandle;
if (AdditionalCCBs <= 0)
return;
while (HostAdapter->AllocatedCCBs - PreviouslyAllocated < AdditionalCCBs) {
BlockPointer = pci_alloc_consistent(HostAdapter->PCI_Device, BlockSize, &BlockPointerHandle);
if (BlockPointer == NULL)
break;
BusLogic_InitializeCCBs(HostAdapter, BlockPointer, BlockSize, BlockPointerHandle);
}
if (HostAdapter->AllocatedCCBs > PreviouslyAllocated) {
if (SuccessMessageP)
BusLogic_Notice("Allocated %d additional CCBs (total now %d)\n", HostAdapter, HostAdapter->AllocatedCCBs - PreviouslyAllocated, HostAdapter->AllocatedCCBs);
return;
}
BusLogic_Notice("Failed to allocate additional CCBs\n", HostAdapter);
if (HostAdapter->DriverQueueDepth > HostAdapter->AllocatedCCBs - HostAdapter->TargetDeviceCount) {
HostAdapter->DriverQueueDepth = HostAdapter->AllocatedCCBs - HostAdapter->TargetDeviceCount;
HostAdapter->SCSI_Host->can_queue = HostAdapter->DriverQueueDepth;
}
}
/*
BusLogic_AllocateCCB allocates a CCB from Host Adapter's free list,
allocating more memory from the Kernel if necessary. The Host Adapter's
Lock should already have been acquired by the caller.
*/
static struct BusLogic_CCB *BusLogic_AllocateCCB(struct BusLogic_HostAdapter
*HostAdapter)
{
static unsigned long SerialNumber = 0;
struct BusLogic_CCB *CCB;
CCB = HostAdapter->Free_CCBs;
if (CCB != NULL) {
CCB->SerialNumber = ++SerialNumber;
HostAdapter->Free_CCBs = CCB->Next;
CCB->Next = NULL;
if (HostAdapter->Free_CCBs == NULL)
BusLogic_CreateAdditionalCCBs(HostAdapter, HostAdapter->IncrementalCCBs, true);
return CCB;
}
BusLogic_CreateAdditionalCCBs(HostAdapter, HostAdapter->IncrementalCCBs, true);
CCB = HostAdapter->Free_CCBs;
if (CCB == NULL)
return NULL;
CCB->SerialNumber = ++SerialNumber;
HostAdapter->Free_CCBs = CCB->Next;
CCB->Next = NULL;
return CCB;
}
/*
BusLogic_DeallocateCCB deallocates a CCB, returning it to the Host Adapter's
free list. The Host Adapter's Lock should already have been acquired by the
caller.
*/
static void BusLogic_DeallocateCCB(struct BusLogic_CCB *CCB)
{
struct BusLogic_HostAdapter *HostAdapter = CCB->HostAdapter;
scsi_dma_unmap(CCB->Command);
pci_unmap_single(HostAdapter->PCI_Device, CCB->SenseDataPointer,
CCB->SenseDataLength, PCI_DMA_FROMDEVICE);
CCB->Command = NULL;
CCB->Status = BusLogic_CCB_Free;
CCB->Next = HostAdapter->Free_CCBs;
HostAdapter->Free_CCBs = CCB;
}
/*
BusLogic_Command sends the command OperationCode to HostAdapter, optionally
providing ParameterLength bytes of ParameterData and receiving at most
ReplyLength bytes of ReplyData; any excess reply data is received but
discarded.
On success, this function returns the number of reply bytes read from
the Host Adapter (including any discarded data); on failure, it returns
-1 if the command was invalid, or -2 if a timeout occurred.
BusLogic_Command is called exclusively during host adapter detection and
initialization, so performance and latency are not critical, and exclusive
access to the Host Adapter hardware is assumed. Once the host adapter and
driver are initialized, the only Host Adapter command that is issued is the
single byte Execute Mailbox Command operation code, which does not require
waiting for the Host Adapter Ready bit to be set in the Status Register.
*/
static int BusLogic_Command(struct BusLogic_HostAdapter *HostAdapter, enum BusLogic_OperationCode OperationCode, void *ParameterData, int ParameterLength, void *ReplyData, int ReplyLength)
{
unsigned char *ParameterPointer = (unsigned char *) ParameterData;
unsigned char *ReplyPointer = (unsigned char *) ReplyData;
union BusLogic_StatusRegister StatusRegister;
union BusLogic_InterruptRegister InterruptRegister;
unsigned long ProcessorFlags = 0;
int ReplyBytes = 0, Result;
long TimeoutCounter;
/*
Clear out the Reply Data if provided.
*/
if (ReplyLength > 0)
memset(ReplyData, 0, ReplyLength);
/*
If the IRQ Channel has not yet been acquired, then interrupts must be
disabled while issuing host adapter commands since a Command Complete
interrupt could occur if the IRQ Channel was previously enabled by another
BusLogic Host Adapter or another driver sharing the same IRQ Channel.
*/
if (!HostAdapter->IRQ_ChannelAcquired)
local_irq_save(ProcessorFlags);
/*
Wait for the Host Adapter Ready bit to be set and the Command/Parameter
Register Busy bit to be reset in the Status Register.
*/
TimeoutCounter = 10000;
while (--TimeoutCounter >= 0) {
StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
if (StatusRegister.sr.HostAdapterReady && !StatusRegister.sr.CommandParameterRegisterBusy)
break;
udelay(100);
}
if (TimeoutCounter < 0) {
BusLogic_CommandFailureReason = "Timeout waiting for Host Adapter Ready";
Result = -2;
goto Done;
}
/*
Write the OperationCode to the Command/Parameter Register.
*/
HostAdapter->HostAdapterCommandCompleted = false;
BusLogic_WriteCommandParameterRegister(HostAdapter, OperationCode);
/*
Write any additional Parameter Bytes.
*/
TimeoutCounter = 10000;
while (ParameterLength > 0 && --TimeoutCounter >= 0) {
/*
Wait 100 microseconds to give the Host Adapter enough time to determine
whether the last value written to the Command/Parameter Register was
valid or not. If the Command Complete bit is set in the Interrupt
Register, then the Command Invalid bit in the Status Register will be
reset if the Operation Code or Parameter was valid and the command
has completed, or set if the Operation Code or Parameter was invalid.
If the Data In Register Ready bit is set in the Status Register, then
the Operation Code was valid, and data is waiting to be read back
from the Host Adapter. Otherwise, wait for the Command/Parameter
Register Busy bit in the Status Register to be reset.
*/
udelay(100);
InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
if (InterruptRegister.ir.CommandComplete)
break;
if (HostAdapter->HostAdapterCommandCompleted)
break;
if (StatusRegister.sr.DataInRegisterReady)
break;
if (StatusRegister.sr.CommandParameterRegisterBusy)
continue;
BusLogic_WriteCommandParameterRegister(HostAdapter, *ParameterPointer++);
ParameterLength--;
}
if (TimeoutCounter < 0) {
BusLogic_CommandFailureReason = "Timeout waiting for Parameter Acceptance";
Result = -2;
goto Done;
}
/*
The Modify I/O Address command does not cause a Command Complete Interrupt.
*/
if (OperationCode == BusLogic_ModifyIOAddress) {
StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
if (StatusRegister.sr.CommandInvalid) {
BusLogic_CommandFailureReason = "Modify I/O Address Invalid";
Result = -1;
goto Done;
}
if (BusLogic_GlobalOptions.TraceConfiguration)
BusLogic_Notice("BusLogic_Command(%02X) Status = %02X: " "(Modify I/O Address)\n", HostAdapter, OperationCode, StatusRegister.All);
Result = 0;
goto Done;
}
/*
Select an appropriate timeout value for awaiting command completion.
*/
switch (OperationCode) {
case BusLogic_InquireInstalledDevicesID0to7:
case BusLogic_InquireInstalledDevicesID8to15:
case BusLogic_InquireTargetDevices:
/* Approximately 60 seconds. */
TimeoutCounter = 60 * 10000;
break;
default:
/* Approximately 1 second. */
TimeoutCounter = 10000;
break;
}
/*
Receive any Reply Bytes, waiting for either the Command Complete bit to
be set in the Interrupt Register, or for the Interrupt Handler to set the
Host Adapter Command Completed bit in the Host Adapter structure.
*/
while (--TimeoutCounter >= 0) {
InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
if (InterruptRegister.ir.CommandComplete)
break;
if (HostAdapter->HostAdapterCommandCompleted)
break;
if (StatusRegister.sr.DataInRegisterReady) {
if (++ReplyBytes <= ReplyLength)
*ReplyPointer++ = BusLogic_ReadDataInRegister(HostAdapter);
else
BusLogic_ReadDataInRegister(HostAdapter);
}
if (OperationCode == BusLogic_FetchHostAdapterLocalRAM && StatusRegister.sr.HostAdapterReady)
break;
udelay(100);
}
if (TimeoutCounter < 0) {
BusLogic_CommandFailureReason = "Timeout waiting for Command Complete";
Result = -2;
goto Done;
}
/*
Clear any pending Command Complete Interrupt.
*/
BusLogic_InterruptReset(HostAdapter);
/*
Provide tracing information if requested.
*/
if (BusLogic_GlobalOptions.TraceConfiguration) {
int i;
BusLogic_Notice("BusLogic_Command(%02X) Status = %02X: %2d ==> %2d:", HostAdapter, OperationCode, StatusRegister.All, ReplyLength, ReplyBytes);
if (ReplyLength > ReplyBytes)
ReplyLength = ReplyBytes;
for (i = 0; i < ReplyLength; i++)
BusLogic_Notice(" %02X", HostAdapter, ((unsigned char *) ReplyData)[i]);
BusLogic_Notice("\n", HostAdapter);
}
/*
Process Command Invalid conditions.
*/
if (StatusRegister.sr.CommandInvalid) {
/*
Some early BusLogic Host Adapters may not recover properly from
a Command Invalid condition, so if this appears to be the case,
a Soft Reset is issued to the Host Adapter. Potentially invalid
commands are never attempted after Mailbox Initialization is
performed, so there should be no Host Adapter state lost by a
Soft Reset in response to a Command Invalid condition.
*/
udelay(1000);
StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
if (StatusRegister.sr.CommandInvalid ||
StatusRegister.sr.Reserved ||
StatusRegister.sr.DataInRegisterReady ||
StatusRegister.sr.CommandParameterRegisterBusy || !StatusRegister.sr.HostAdapterReady || !StatusRegister.sr.InitializationRequired || StatusRegister.sr.DiagnosticActive || StatusRegister.sr.DiagnosticFailure) {
BusLogic_SoftReset(HostAdapter);
udelay(1000);
}
BusLogic_CommandFailureReason = "Command Invalid";
Result = -1;
goto Done;
}
/*
Handle Excess Parameters Supplied conditions.
*/
if (ParameterLength > 0) {
BusLogic_CommandFailureReason = "Excess Parameters Supplied";
Result = -1;
goto Done;
}
/*
Indicate the command completed successfully.
*/
BusLogic_CommandFailureReason = NULL;
Result = ReplyBytes;
/*
Restore the interrupt status if necessary and return.
*/
Done:
if (!HostAdapter->IRQ_ChannelAcquired)
local_irq_restore(ProcessorFlags);
return Result;
}
/*
BusLogic_AppendProbeAddressISA appends a single ISA I/O Address to the list
of I/O Address and Bus Probe Information to be checked for potential BusLogic
Host Adapters.
*/
static void __init BusLogic_AppendProbeAddressISA(unsigned long IO_Address)
{
struct BusLogic_ProbeInfo *ProbeInfo;
if (BusLogic_ProbeInfoCount >= BusLogic_MaxHostAdapters)
return;
ProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount++];
ProbeInfo->HostAdapterType = BusLogic_MultiMaster;
ProbeInfo->HostAdapterBusType = BusLogic_ISA_Bus;
ProbeInfo->IO_Address = IO_Address;
ProbeInfo->PCI_Device = NULL;
}
/*
BusLogic_InitializeProbeInfoListISA initializes the list of I/O Address and
Bus Probe Information to be checked for potential BusLogic SCSI Host Adapters
only from the list of standard BusLogic MultiMaster ISA I/O Addresses.
*/
static void __init BusLogic_InitializeProbeInfoListISA(struct BusLogic_HostAdapter
*PrototypeHostAdapter)
{
/*
If BusLogic Driver Options specifications requested that ISA Bus Probes
be inhibited, do not proceed further.
*/
if (BusLogic_ProbeOptions.NoProbeISA)
return;
/*
Append the list of standard BusLogic MultiMaster ISA I/O Addresses.
*/
if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe330)
BusLogic_AppendProbeAddressISA(0x330);
if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe334)
BusLogic_AppendProbeAddressISA(0x334);
if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe230)
BusLogic_AppendProbeAddressISA(0x230);
if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe234)
BusLogic_AppendProbeAddressISA(0x234);
if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe130)
BusLogic_AppendProbeAddressISA(0x130);
if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe134)
BusLogic_AppendProbeAddressISA(0x134);
}
#ifdef CONFIG_PCI
/*
BusLogic_SortProbeInfo sorts a section of BusLogic_ProbeInfoList in order
of increasing PCI Bus and Device Number.
*/
static void __init BusLogic_SortProbeInfo(struct BusLogic_ProbeInfo *ProbeInfoList, int ProbeInfoCount)
{
int LastInterchange = ProbeInfoCount - 1, Bound, j;
while (LastInterchange > 0) {
Bound = LastInterchange;
LastInterchange = 0;
for (j = 0; j < Bound; j++) {
struct BusLogic_ProbeInfo *ProbeInfo1 = &ProbeInfoList[j];
struct BusLogic_ProbeInfo *ProbeInfo2 = &ProbeInfoList[j + 1];
if (ProbeInfo1->Bus > ProbeInfo2->Bus || (ProbeInfo1->Bus == ProbeInfo2->Bus && (ProbeInfo1->Device > ProbeInfo2->Device))) {
struct BusLogic_ProbeInfo TempProbeInfo;
memcpy(&TempProbeInfo, ProbeInfo1, sizeof(struct BusLogic_ProbeInfo));
memcpy(ProbeInfo1, ProbeInfo2, sizeof(struct BusLogic_ProbeInfo));
memcpy(ProbeInfo2, &TempProbeInfo, sizeof(struct BusLogic_ProbeInfo));
LastInterchange = j;
}
}
}
}
/*
BusLogic_InitializeMultiMasterProbeInfo initializes the list of I/O Address
and Bus Probe Information to be checked for potential BusLogic MultiMaster
SCSI Host Adapters by interrogating the PCI Configuration Space on PCI
machines as well as from the list of standard BusLogic MultiMaster ISA
I/O Addresses. It returns the number of PCI MultiMaster Host Adapters found.
*/
static int __init BusLogic_InitializeMultiMasterProbeInfo(struct BusLogic_HostAdapter
*PrototypeHostAdapter)
{
struct BusLogic_ProbeInfo *PrimaryProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount];
int NonPrimaryPCIMultiMasterIndex = BusLogic_ProbeInfoCount + 1;
int NonPrimaryPCIMultiMasterCount = 0, PCIMultiMasterCount = 0;
bool ForceBusDeviceScanningOrder = false;
bool ForceBusDeviceScanningOrderChecked = false;
bool StandardAddressSeen[6];
struct pci_dev *PCI_Device = NULL;
int i;
if (BusLogic_ProbeInfoCount >= BusLogic_MaxHostAdapters)
return 0;
BusLogic_ProbeInfoCount++;
for (i = 0; i < 6; i++)
StandardAddressSeen[i] = false;
/*
Iterate over the MultiMaster PCI Host Adapters. For each enumerated host
adapter, determine whether its ISA Compatible I/O Port is enabled and if
so, whether it is assigned the Primary I/O Address. A host adapter that is
assigned the Primary I/O Address will always be the preferred boot device.
The MultiMaster BIOS will first recognize a host adapter at the Primary I/O
Address, then any other PCI host adapters, and finally any host adapters
located at the remaining standard ISA I/O Addresses. When a PCI host
adapter is found with its ISA Compatible I/O Port enabled, a command is
issued to disable the ISA Compatible I/O Port, and it is noted that the
particular standard ISA I/O Address need not be probed.
*/
PrimaryProbeInfo->IO_Address = 0;
while ((PCI_Device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER, PCI_Device)) != NULL) {
struct BusLogic_HostAdapter *HostAdapter = PrototypeHostAdapter;
struct BusLogic_PCIHostAdapterInformation PCIHostAdapterInformation;
enum BusLogic_ISACompatibleIOPort ModifyIOAddressRequest;
unsigned char Bus;
unsigned char Device;
unsigned int IRQ_Channel;
unsigned long BaseAddress0;
unsigned long BaseAddress1;
unsigned long IO_Address;
unsigned long PCI_Address;
if (pci_enable_device(PCI_Device))
continue;
if (pci_set_dma_mask(PCI_Device, DMA_BIT_MASK(32) ))
continue;
Bus = PCI_Device->bus->number;
Device = PCI_Device->devfn >> 3;
IRQ_Channel = PCI_Device->irq;
IO_Address = BaseAddress0 = pci_resource_start(PCI_Device, 0);
PCI_Address = BaseAddress1 = pci_resource_start(PCI_Device, 1);
if (pci_resource_flags(PCI_Device, 0) & IORESOURCE_MEM) {
BusLogic_Error("BusLogic: Base Address0 0x%X not I/O for " "MultiMaster Host Adapter\n", NULL, BaseAddress0);
BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
continue;
}
if (pci_resource_flags(PCI_Device, 1) & IORESOURCE_IO) {
BusLogic_Error("BusLogic: Base Address1 0x%X not Memory for " "MultiMaster Host Adapter\n", NULL, BaseAddress1);
BusLogic_Error("at PCI Bus %d Device %d PCI Address 0x%X\n", NULL, Bus, Device, PCI_Address);
continue;
}
if (IRQ_Channel == 0) {
BusLogic_Error("BusLogic: IRQ Channel %d invalid for " "MultiMaster Host Adapter\n", NULL, IRQ_Channel);
BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
continue;
}
if (BusLogic_GlobalOptions.TraceProbe) {
BusLogic_Notice("BusLogic: PCI MultiMaster Host Adapter " "detected at\n", NULL);
BusLogic_Notice("BusLogic: PCI Bus %d Device %d I/O Address " "0x%X PCI Address 0x%X\n", NULL, Bus, Device, IO_Address, PCI_Address);
}
/*
Issue the Inquire PCI Host Adapter Information command to determine
the ISA Compatible I/O Port. If the ISA Compatible I/O Port is
known and enabled, note that the particular Standard ISA I/O
Address should not be probed.
*/
HostAdapter->IO_Address = IO_Address;
BusLogic_InterruptReset(HostAdapter);
if (BusLogic_Command(HostAdapter, BusLogic_InquirePCIHostAdapterInformation, NULL, 0, &PCIHostAdapterInformation, sizeof(PCIHostAdapterInformation))
== sizeof(PCIHostAdapterInformation)) {
if (PCIHostAdapterInformation.ISACompatibleIOPort < 6)
StandardAddressSeen[PCIHostAdapterInformation.ISACompatibleIOPort] = true;
} else
PCIHostAdapterInformation.ISACompatibleIOPort = BusLogic_IO_Disable;
/*
* Issue the Modify I/O Address command to disable the ISA Compatible
* I/O Port. On PCI Host Adapters, the Modify I/O Address command
* allows modification of the ISA compatible I/O Address that the Host
* Adapter responds to; it does not affect the PCI compliant I/O Address
* assigned at system initialization.
*/
ModifyIOAddressRequest = BusLogic_IO_Disable;
BusLogic_Command(HostAdapter, BusLogic_ModifyIOAddress, &ModifyIOAddressRequest, sizeof(ModifyIOAddressRequest), NULL, 0);
/*
For the first MultiMaster Host Adapter enumerated, issue the Fetch
Host Adapter Local RAM command to read byte 45 of the AutoSCSI area,
for the setting of the "Use Bus And Device # For PCI Scanning Seq."
option. Issue the Inquire Board ID command since this option is
only valid for the BT-948/958/958D.
*/
if (!ForceBusDeviceScanningOrderChecked) {
struct BusLogic_FetchHostAdapterLocalRAMRequest FetchHostAdapterLocalRAMRequest;
struct BusLogic_AutoSCSIByte45 AutoSCSIByte45;
struct BusLogic_BoardID BoardID;
FetchHostAdapterLocalRAMRequest.ByteOffset = BusLogic_AutoSCSI_BaseOffset + 45;
FetchHostAdapterLocalRAMRequest.ByteCount = sizeof(AutoSCSIByte45);
BusLogic_Command(HostAdapter, BusLogic_FetchHostAdapterLocalRAM, &FetchHostAdapterLocalRAMRequest, sizeof(FetchHostAdapterLocalRAMRequest), &AutoSCSIByte45, sizeof(AutoSCSIByte45));
BusLogic_Command(HostAdapter, BusLogic_InquireBoardID, NULL, 0, &BoardID, sizeof(BoardID));
if (BoardID.FirmwareVersion1stDigit == '5')
ForceBusDeviceScanningOrder = AutoSCSIByte45.ForceBusDeviceScanningOrder;
ForceBusDeviceScanningOrderChecked = true;
}
/*
Determine whether this MultiMaster Host Adapter has its ISA
Compatible I/O Port enabled and is assigned the Primary I/O Address.
If it does, then it is the Primary MultiMaster Host Adapter and must
be recognized first. If it does not, then it is added to the list
for probing after any Primary MultiMaster Host Adapter is probed.
*/
if (PCIHostAdapterInformation.ISACompatibleIOPort == BusLogic_IO_330) {
PrimaryProbeInfo->HostAdapterType = BusLogic_MultiMaster;
PrimaryProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
PrimaryProbeInfo->IO_Address = IO_Address;
PrimaryProbeInfo->PCI_Address = PCI_Address;
PrimaryProbeInfo->Bus = Bus;
PrimaryProbeInfo->Device = Device;
PrimaryProbeInfo->IRQ_Channel = IRQ_Channel;
PrimaryProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
PCIMultiMasterCount++;
} else if (BusLogic_ProbeInfoCount < BusLogic_MaxHostAdapters) {
struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount++];
ProbeInfo->HostAdapterType = BusLogic_MultiMaster;
ProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
ProbeInfo->IO_Address = IO_Address;
ProbeInfo->PCI_Address = PCI_Address;
ProbeInfo->Bus = Bus;
ProbeInfo->Device = Device;
ProbeInfo->IRQ_Channel = IRQ_Channel;
ProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
NonPrimaryPCIMultiMasterCount++;
PCIMultiMasterCount++;
} else
BusLogic_Warning("BusLogic: Too many Host Adapters " "detected\n", NULL);
}
/*
If the AutoSCSI "Use Bus And Device # For PCI Scanning Seq." option is ON
for the first enumerated MultiMaster Host Adapter, and if that host adapter
is a BT-948/958/958D, then the MultiMaster BIOS will recognize MultiMaster
Host Adapters in the order of increasing PCI Bus and Device Number. In
that case, sort the probe information into the same order the BIOS uses.
If this option is OFF, then the MultiMaster BIOS will recognize MultiMaster
Host Adapters in the order they are enumerated by the PCI BIOS, and hence
no sorting is necessary.
*/
if (ForceBusDeviceScanningOrder)
BusLogic_SortProbeInfo(&BusLogic_ProbeInfoList[NonPrimaryPCIMultiMasterIndex], NonPrimaryPCIMultiMasterCount);
/*
If no PCI MultiMaster Host Adapter is assigned the Primary I/O Address,
then the Primary I/O Address must be probed explicitly before any PCI
host adapters are probed.
*/
if (!BusLogic_ProbeOptions.NoProbeISA)
if (PrimaryProbeInfo->IO_Address == 0 &&
(!BusLogic_ProbeOptions.LimitedProbeISA ||
BusLogic_ProbeOptions.Probe330)) {
PrimaryProbeInfo->HostAdapterType = BusLogic_MultiMaster;
PrimaryProbeInfo->HostAdapterBusType = BusLogic_ISA_Bus;
PrimaryProbeInfo->IO_Address = 0x330;
}
/*
Append the list of standard BusLogic MultiMaster ISA I/O Addresses,
omitting the Primary I/O Address which has already been handled.
*/
if (!BusLogic_ProbeOptions.NoProbeISA) {
if (!StandardAddressSeen[1] &&
(!BusLogic_ProbeOptions.LimitedProbeISA ||
BusLogic_ProbeOptions.Probe334))
BusLogic_AppendProbeAddressISA(0x334);
if (!StandardAddressSeen[2] &&
(!BusLogic_ProbeOptions.LimitedProbeISA ||
BusLogic_ProbeOptions.Probe230))
BusLogic_AppendProbeAddressISA(0x230);
if (!StandardAddressSeen[3] &&
(!BusLogic_ProbeOptions.LimitedProbeISA ||
BusLogic_ProbeOptions.Probe234))
BusLogic_AppendProbeAddressISA(0x234);
if (!StandardAddressSeen[4] &&
(!BusLogic_ProbeOptions.LimitedProbeISA ||
BusLogic_ProbeOptions.Probe130))
BusLogic_AppendProbeAddressISA(0x130);
if (!StandardAddressSeen[5] &&
(!BusLogic_ProbeOptions.LimitedProbeISA ||
BusLogic_ProbeOptions.Probe134))
BusLogic_AppendProbeAddressISA(0x134);
}
/*
Iterate over the older non-compliant MultiMaster PCI Host Adapters,
noting the PCI bus location and assigned IRQ Channel.
*/
PCI_Device = NULL;
while ((PCI_Device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC, PCI_Device)) != NULL) {
unsigned char Bus;
unsigned char Device;
unsigned int IRQ_Channel;
unsigned long IO_Address;
if (pci_enable_device(PCI_Device))
continue;
if (pci_set_dma_mask(PCI_Device, DMA_BIT_MASK(32)))
continue;
Bus = PCI_Device->bus->number;
Device = PCI_Device->devfn >> 3;
IRQ_Channel = PCI_Device->irq;
IO_Address = pci_resource_start(PCI_Device, 0);
if (IO_Address == 0 || IRQ_Channel == 0)
continue;
for (i = 0; i < BusLogic_ProbeInfoCount; i++) {
struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[i];
if (ProbeInfo->IO_Address == IO_Address && ProbeInfo->HostAdapterType == BusLogic_MultiMaster) {
ProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
ProbeInfo->PCI_Address = 0;
ProbeInfo->Bus = Bus;
ProbeInfo->Device = Device;
ProbeInfo->IRQ_Channel = IRQ_Channel;
ProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
break;
}
}
}
return PCIMultiMasterCount;
}
/*
BusLogic_InitializeFlashPointProbeInfo initializes the list of I/O Address
and Bus Probe Information to be checked for potential BusLogic FlashPoint
Host Adapters by interrogating the PCI Configuration Space. It returns the
number of FlashPoint Host Adapters found.
*/
static int __init BusLogic_InitializeFlashPointProbeInfo(struct BusLogic_HostAdapter
*PrototypeHostAdapter)
{
int FlashPointIndex = BusLogic_ProbeInfoCount, FlashPointCount = 0;
struct pci_dev *PCI_Device = NULL;
/*
Interrogate PCI Configuration Space for any FlashPoint Host Adapters.
*/
while ((PCI_Device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT, PCI_Device)) != NULL) {
unsigned char Bus;
unsigned char Device;
unsigned int IRQ_Channel;
unsigned long BaseAddress0;
unsigned long BaseAddress1;
unsigned long IO_Address;
unsigned long PCI_Address;
if (pci_enable_device(PCI_Device))
continue;
if (pci_set_dma_mask(PCI_Device, DMA_BIT_MASK(32)))
continue;
Bus = PCI_Device->bus->number;
Device = PCI_Device->devfn >> 3;
IRQ_Channel = PCI_Device->irq;
IO_Address = BaseAddress0 = pci_resource_start(PCI_Device, 0);
PCI_Address = BaseAddress1 = pci_resource_start(PCI_Device, 1);
#ifdef CONFIG_SCSI_FLASHPOINT
if (pci_resource_flags(PCI_Device, 0) & IORESOURCE_MEM) {
BusLogic_Error("BusLogic: Base Address0 0x%X not I/O for " "FlashPoint Host Adapter\n", NULL, BaseAddress0);
BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
continue;
}
if (pci_resource_flags(PCI_Device, 1) & IORESOURCE_IO) {
BusLogic_Error("BusLogic: Base Address1 0x%X not Memory for " "FlashPoint Host Adapter\n", NULL, BaseAddress1);
BusLogic_Error("at PCI Bus %d Device %d PCI Address 0x%X\n", NULL, Bus, Device, PCI_Address);
continue;
}
if (IRQ_Channel == 0) {
BusLogic_Error("BusLogic: IRQ Channel %d invalid for " "FlashPoint Host Adapter\n", NULL, IRQ_Channel);
BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
continue;
}
if (BusLogic_GlobalOptions.TraceProbe) {
BusLogic_Notice("BusLogic: FlashPoint Host Adapter " "detected at\n", NULL);
BusLogic_Notice("BusLogic: PCI Bus %d Device %d I/O Address " "0x%X PCI Address 0x%X\n", NULL, Bus, Device, IO_Address, PCI_Address);
}
if (BusLogic_ProbeInfoCount < BusLogic_MaxHostAdapters) {
struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount++];
ProbeInfo->HostAdapterType = BusLogic_FlashPoint;
ProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
ProbeInfo->IO_Address = IO_Address;
ProbeInfo->PCI_Address = PCI_Address;
ProbeInfo->Bus = Bus;
ProbeInfo->Device = Device;
ProbeInfo->IRQ_Channel = IRQ_Channel;
ProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
FlashPointCount++;
} else
BusLogic_Warning("BusLogic: Too many Host Adapters " "detected\n", NULL);
#else
BusLogic_Error("BusLogic: FlashPoint Host Adapter detected at " "PCI Bus %d Device %d\n", NULL, Bus, Device);
BusLogic_Error("BusLogic: I/O Address 0x%X PCI Address 0x%X, irq %d, " "but FlashPoint\n", NULL, IO_Address, PCI_Address, IRQ_Channel);
BusLogic_Error("BusLogic: support was omitted in this kernel " "configuration.\n", NULL);
#endif
}
/*
The FlashPoint BIOS will scan for FlashPoint Host Adapters in the order of
increasing PCI Bus and Device Number, so sort the probe information into
the same order the BIOS uses.
*/
BusLogic_SortProbeInfo(&BusLogic_ProbeInfoList[FlashPointIndex], FlashPointCount);
return FlashPointCount;
}
/*
BusLogic_InitializeProbeInfoList initializes the list of I/O Address and Bus
Probe Information to be checked for potential BusLogic SCSI Host Adapters by
interrogating the PCI Configuration Space on PCI machines as well as from the
list of standard BusLogic MultiMaster ISA I/O Addresses. By default, if both
FlashPoint and PCI MultiMaster Host Adapters are present, this driver will
probe for FlashPoint Host Adapters first unless the BIOS primary disk is
controlled by the first PCI MultiMaster Host Adapter, in which case
MultiMaster Host Adapters will be probed first. The BusLogic Driver Options
specifications "MultiMasterFirst" and "FlashPointFirst" can be used to force
a particular probe order.
*/
static void __init BusLogic_InitializeProbeInfoList(struct BusLogic_HostAdapter
*PrototypeHostAdapter)
{
/*
If a PCI BIOS is present, interrogate it for MultiMaster and FlashPoint
Host Adapters; otherwise, default to the standard ISA MultiMaster probe.
*/
if (!BusLogic_ProbeOptions.NoProbePCI) {
if (BusLogic_ProbeOptions.MultiMasterFirst) {
BusLogic_InitializeMultiMasterProbeInfo(PrototypeHostAdapter);
BusLogic_InitializeFlashPointProbeInfo(PrototypeHostAdapter);
} else if (BusLogic_ProbeOptions.FlashPointFirst) {
BusLogic_InitializeFlashPointProbeInfo(PrototypeHostAdapter);
BusLogic_InitializeMultiMasterProbeInfo(PrototypeHostAdapter);
} else {
int FlashPointCount = BusLogic_InitializeFlashPointProbeInfo(PrototypeHostAdapter);
int PCIMultiMasterCount = BusLogic_InitializeMultiMasterProbeInfo(PrototypeHostAdapter);
if (FlashPointCount > 0 && PCIMultiMasterCount > 0) {
struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[FlashPointCount];
struct BusLogic_HostAdapter *HostAdapter = PrototypeHostAdapter;
struct BusLogic_FetchHostAdapterLocalRAMRequest FetchHostAdapterLocalRAMRequest;
struct BusLogic_BIOSDriveMapByte Drive0MapByte;
while (ProbeInfo->HostAdapterBusType != BusLogic_PCI_Bus)
ProbeInfo++;
HostAdapter->IO_Address = ProbeInfo->IO_Address;
FetchHostAdapterLocalRAMRequest.ByteOffset = BusLogic_BIOS_BaseOffset + BusLogic_BIOS_DriveMapOffset + 0;
FetchHostAdapterLocalRAMRequest.ByteCount = sizeof(Drive0MapByte);
BusLogic_Command(HostAdapter, BusLogic_FetchHostAdapterLocalRAM, &FetchHostAdapterLocalRAMRequest, sizeof(FetchHostAdapterLocalRAMRequest), &Drive0MapByte, sizeof(Drive0MapByte));
/*
If the Map Byte for BIOS Drive 0 indicates that BIOS Drive 0
is controlled by this PCI MultiMaster Host Adapter, then
reverse the probe order so that MultiMaster Host Adapters are
probed before FlashPoint Host Adapters.
*/
if (Drive0MapByte.DiskGeometry != BusLogic_BIOS_Disk_Not_Installed) {
struct BusLogic_ProbeInfo SavedProbeInfo[BusLogic_MaxHostAdapters];
int MultiMasterCount = BusLogic_ProbeInfoCount - FlashPointCount;
memcpy(SavedProbeInfo, BusLogic_ProbeInfoList, BusLogic_ProbeInfoCount * sizeof(struct BusLogic_ProbeInfo));
memcpy(&BusLogic_ProbeInfoList[0], &SavedProbeInfo[FlashPointCount], MultiMasterCount * sizeof(struct BusLogic_ProbeInfo));
memcpy(&BusLogic_ProbeInfoList[MultiMasterCount], &SavedProbeInfo[0], FlashPointCount * sizeof(struct BusLogic_ProbeInfo));