diff options
Diffstat (limited to 'drivers/scsi/BusLogic.c')
-rw-r--r-- | drivers/scsi/BusLogic.c | 3574 |
1 files changed, 3574 insertions, 0 deletions
diff --git a/drivers/scsi/BusLogic.c b/drivers/scsi/BusLogic.c new file mode 100644 index 000000000000..41b5197ce4e6 --- /dev/null +++ b/drivers/scsi/BusLogic.c @@ -0,0 +1,3574 @@ + +/* + + 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/config.h> +#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 <scsi/scsicam.h> + +#include <asm/dma.h> +#include <asm/io.h> +#include <asm/system.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 boolean __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, boolean 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; + struct scsi_cmnd *cmd = CCB->Command; + + if (cmd->use_sg != 0) { + pci_unmap_sg(HostAdapter->PCI_Device, + (struct scatterlist *)cmd->request_buffer, + cmd->use_sg, cmd->sc_data_direction); + } else if (cmd->request_bufflen != 0) { + pci_unmap_single(HostAdapter->PCI_Device, CCB->DataPointer, + CCB->DataLength, cmd->sc_data_direction); + } + 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); + local_irq_disable(); + } + /* + 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 : check_region(0x330, BusLogic_MultiMasterAddressCount) == 0) + BusLogic_AppendProbeAddressISA(0x330); + if (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe334 : check_region(0x334, BusLogic_MultiMasterAddressCount) == 0) + BusLogic_AppendProbeAddressISA(0x334); + if (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe230 : check_region(0x230, BusLogic_MultiMasterAddressCount) == 0) + BusLogic_AppendProbeAddressISA(0x230); + if (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe234 : check_region(0x234, BusLogic_MultiMasterAddressCount) == 0) + BusLogic_AppendProbeAddressISA(0x234); + if (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe130 : check_region(0x130, BusLogic_MultiMasterAddressCount) == 0) + BusLogic_AppendProbeAddressISA(0x130); + if (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe134 : check_region(0x134, BusLogic_MultiMasterAddressCount) == 0) + 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; + boolean ForceBusDeviceScanningOrder = false; + boolean ForceBusDeviceScanningOrderChecked = false; + boolean 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_find_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, (u64) 0xffffffff)) + 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_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_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 : check_region(0x330, BusLogic_MultiMasterAddressCount) == 0)) { + 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 : check_region(0x334, BusLogic_MultiMasterAddressCount) == 0)) + BusLogic_AppendProbeAddressISA(0x334); + if (!StandardAddressSeen[2] && (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe230 : check_region(0x230, BusLogic_MultiMasterAddressCount) == 0)) + BusLogic_AppendProbeAddressISA(0x230); + if (!StandardAddressSeen[3] && (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe234 : check_region(0x234, BusLogic_MultiMasterAddressCount) == 0)) + BusLogic_AppendProbeAddressISA(0x234); + if (!StandardAddressSeen[4] && (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe130 : check_region(0x130, BusLogic_MultiMasterAddressCount) == 0)) + BusLogic_AppendProbeAddressISA(0x130); + if (!StandardAddressSeen[5] && (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe134 : check_region(0x134, BusLogic_MultiMasterAddressCount) == 0)) + 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_find_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, (u64) 0xffffffff)) + 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_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_find_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, (u64) 0xffffffff)) + 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); +#ifndef CONFIG_SCSI_OMIT_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_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 dri |