diff options
Diffstat (limited to 'drivers/scsi/cpqfcTSinit.c')
| -rw-r--r-- | drivers/scsi/cpqfcTSinit.c | 2096 |
1 files changed, 0 insertions, 2096 deletions
diff --git a/drivers/scsi/cpqfcTSinit.c b/drivers/scsi/cpqfcTSinit.c deleted file mode 100644 index 3fda8d455c5b..000000000000 --- a/drivers/scsi/cpqfcTSinit.c +++ /dev/null @@ -1,2096 +0,0 @@ -/* Copyright(c) 2000, Compaq Computer Corporation - * Fibre Channel Host Bus Adapter - * 64-bit, 66MHz PCI - * Originally developed and tested on: - * (front): [chip] Tachyon TS HPFC-5166A/1.2 L2C1090 ... - * SP# P225CXCBFIEL6T, Rev XC - * SP# 161290-001, Rev XD - * (back): Board No. 010008-001 A/W Rev X5, FAB REV X5 - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2, or (at your option) any - * later version. - * - * 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 more details. - * Written by Don Zimmerman - * IOCTL and procfs added by Jouke Numan - * SMP testing by Chel Van Gennip - * - * portions copied from: - * QLogic CPQFCTS SCSI-FCP - * Written by Erik H. Moe, ehm@cris.com - * Copyright 1995, Erik H. Moe - * Renamed and updated to 1.3.x by Michael Griffith <grif@cs.ucr.edu> - * Chris Loveland <cwl@iol.unh.edu> to support the isp2100 and isp2200 -*/ - - -#define LinuxVersionCode(v, p, s) (((v)<<16)+((p)<<8)+(s)) - -#include <linux/config.h> -#include <linux/interrupt.h> -#include <linux/module.h> -#include <linux/version.h> -#include <linux/blkdev.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/delay.h> -#include <linux/timer.h> -#include <linux/init.h> -#include <linux/ioport.h> // request_region() prototype -#include <linux/completion.h> - -#include <asm/io.h> -#include <asm/uaccess.h> // ioctl related -#include <asm/irq.h> -#include <linux/spinlock.h> -#include "scsi.h" -#include <scsi/scsi_host.h> -#include <scsi/scsi_ioctl.h> -#include "cpqfcTSchip.h" -#include "cpqfcTSstructs.h" -#include "cpqfcTStrigger.h" - -#include "cpqfcTS.h" - -/* Embedded module documentation macros - see module.h */ -MODULE_AUTHOR("Compaq Computer Corporation"); -MODULE_DESCRIPTION("Driver for Compaq 64-bit/66Mhz PCI Fibre Channel HBA v. 2.5.4"); -MODULE_LICENSE("GPL"); - -int cpqfcTS_TargetDeviceReset( Scsi_Device *ScsiDev, unsigned int reset_flags); - -// This struct was originally defined in -// /usr/src/linux/include/linux/proc_fs.h -// since it's only partially implemented, we only use first -// few fields... -// NOTE: proc_fs changes in 2.4 kernel - -#if LINUX_VERSION_CODE < LinuxVersionCode(2,3,27) -static struct proc_dir_entry proc_scsi_cpqfcTS = -{ - PROC_SCSI_CPQFCTS, // ushort low_ino (enumerated list) - 7, // ushort namelen - DEV_NAME, // const char* name - S_IFDIR | S_IRUGO | S_IXUGO, // mode_t mode - 2 // nlink_t nlink - // etc. ... -}; - - -#endif - -#if LINUX_VERSION_CODE >= LinuxVersionCode(2,4,7) -# define CPQFC_DECLARE_COMPLETION(x) DECLARE_COMPLETION(x) -# define CPQFC_WAITING waiting -# define CPQFC_COMPLETE(x) complete(x) -# define CPQFC_WAIT_FOR_COMPLETION(x) wait_for_completion(x); -#else -# define CPQFC_DECLARE_COMPLETION(x) DECLARE_MUTEX_LOCKED(x) -# define CPQFC_WAITING sem -# define CPQFC_COMPLETE(x) up(x) -# define CPQFC_WAIT_FOR_COMPLETION(x) down(x) -#endif - -static int cpqfc_alloc_private_data_pool(CPQFCHBA *hba); - -/* local function to load our per-HBA (local) data for chip - registers, FC link state, all FC exchanges, etc. - - We allocate space and compute address offsets for the - most frequently accessed addresses; others (like World Wide - Name) are not necessary. -*/ -static void Cpqfc_initHBAdata(CPQFCHBA *cpqfcHBAdata, struct pci_dev *PciDev ) -{ - - cpqfcHBAdata->PciDev = PciDev; // copy PCI info ptr - - // since x86 port space is 64k, we only need the lower 16 bits - cpqfcHBAdata->fcChip.Registers.IOBaseL = - PciDev->resource[1].start & PCI_BASE_ADDRESS_IO_MASK; - - cpqfcHBAdata->fcChip.Registers.IOBaseU = - PciDev->resource[2].start & PCI_BASE_ADDRESS_IO_MASK; - - // 32-bit memory addresses - cpqfcHBAdata->fcChip.Registers.MemBase = - PciDev->resource[3].start & PCI_BASE_ADDRESS_MEM_MASK; - - cpqfcHBAdata->fcChip.Registers.ReMapMemBase = - ioremap( PciDev->resource[3].start & PCI_BASE_ADDRESS_MEM_MASK, - 0x200); - - cpqfcHBAdata->fcChip.Registers.RAMBase = - PciDev->resource[4].start; - - cpqfcHBAdata->fcChip.Registers.SROMBase = // NULL for HP TS adapter - PciDev->resource[5].start; - - // now the Tachlite chip registers - // the REGISTER struct holds both the physical address & last - // written value (some TL registers are WRITE ONLY) - - cpqfcHBAdata->fcChip.Registers.SFQconsumerIndex.address = - cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_SFQ_CONSUMER_INDEX; - - cpqfcHBAdata->fcChip.Registers.ERQproducerIndex.address = - cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_ERQ_PRODUCER_INDEX; - - // TL Frame Manager - cpqfcHBAdata->fcChip.Registers.FMconfig.address = - cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_CONFIG; - cpqfcHBAdata->fcChip.Registers.FMcontrol.address = - cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_CONTROL; - cpqfcHBAdata->fcChip.Registers.FMstatus.address = - cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_STATUS; - cpqfcHBAdata->fcChip.Registers.FMLinkStatus1.address = - cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_LINK_STAT1; - cpqfcHBAdata->fcChip.Registers.FMLinkStatus2.address = - cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_LINK_STAT2; - cpqfcHBAdata->fcChip.Registers.FMBB_CreditZero.address = - cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_BB_CREDIT0; - - // TL Control Regs - cpqfcHBAdata->fcChip.Registers.TYconfig.address = - cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_TACH_CONFIG; - cpqfcHBAdata->fcChip.Registers.TYcontrol.address = - cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_TACH_CONTROL; - cpqfcHBAdata->fcChip.Registers.TYstatus.address = - cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_TACH_STATUS; - cpqfcHBAdata->fcChip.Registers.rcv_al_pa.address = - cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_RCV_AL_PA; - cpqfcHBAdata->fcChip.Registers.ed_tov.address = - cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_ED_TOV; - - - cpqfcHBAdata->fcChip.Registers.INTEN.address = - cpqfcHBAdata->fcChip.Registers.ReMapMemBase + IINTEN; - cpqfcHBAdata->fcChip.Registers.INTPEND.address = - cpqfcHBAdata->fcChip.Registers.ReMapMemBase + IINTPEND; - cpqfcHBAdata->fcChip.Registers.INTSTAT.address = - cpqfcHBAdata->fcChip.Registers.ReMapMemBase + IINTSTAT; - - DEBUG_PCI(printk(" cpqfcHBAdata->fcChip.Registers. :\n")); - DEBUG_PCI(printk(" IOBaseL = %x\n", - cpqfcHBAdata->fcChip.Registers.IOBaseL)); - DEBUG_PCI(printk(" IOBaseU = %x\n", - cpqfcHBAdata->fcChip.Registers.IOBaseU)); - - /* printk(" ioremap'd Membase: %p\n", cpqfcHBAdata->fcChip.Registers.ReMapMemBase); */ - - DEBUG_PCI(printk(" SFQconsumerIndex.address = %p\n", - cpqfcHBAdata->fcChip.Registers.SFQconsumerIndex.address)); - DEBUG_PCI(printk(" ERQproducerIndex.address = %p\n", - cpqfcHBAdata->fcChip.Registers.ERQproducerIndex.address)); - DEBUG_PCI(printk(" TYconfig.address = %p\n", - cpqfcHBAdata->fcChip.Registers.TYconfig.address)); - DEBUG_PCI(printk(" FMconfig.address = %p\n", - cpqfcHBAdata->fcChip.Registers.FMconfig.address)); - DEBUG_PCI(printk(" FMcontrol.address = %p\n", - cpqfcHBAdata->fcChip.Registers.FMcontrol.address)); - - // set default options for FC controller (chip) - cpqfcHBAdata->fcChip.Options.initiator = 1; // default: SCSI initiator - cpqfcHBAdata->fcChip.Options.target = 0; // default: SCSI target - cpqfcHBAdata->fcChip.Options.extLoopback = 0;// default: no loopback @GBIC - cpqfcHBAdata->fcChip.Options.intLoopback = 0;// default: no loopback inside chip - - // set highest and lowest FC-PH version the adapter/driver supports - // (NOT strict compliance) - cpqfcHBAdata->fcChip.highest_FCPH_ver = FC_PH3; - cpqfcHBAdata->fcChip.lowest_FCPH_ver = FC_PH43; - - // set function points for this controller / adapter - cpqfcHBAdata->fcChip.ResetTachyon = CpqTsResetTachLite; - cpqfcHBAdata->fcChip.FreezeTachyon = CpqTsFreezeTachlite; - cpqfcHBAdata->fcChip.UnFreezeTachyon = CpqTsUnFreezeTachlite; - cpqfcHBAdata->fcChip.CreateTachyonQues = CpqTsCreateTachLiteQues; - cpqfcHBAdata->fcChip.DestroyTachyonQues = CpqTsDestroyTachLiteQues; - cpqfcHBAdata->fcChip.InitializeTachyon = CpqTsInitializeTachLite; - cpqfcHBAdata->fcChip.LaserControl = CpqTsLaserControl; - cpqfcHBAdata->fcChip.ProcessIMQEntry = CpqTsProcessIMQEntry; - cpqfcHBAdata->fcChip.InitializeFrameManager = CpqTsInitializeFrameManager; - cpqfcHBAdata->fcChip.ReadWriteWWN = CpqTsReadWriteWWN; - cpqfcHBAdata->fcChip.ReadWriteNVRAM = CpqTsReadWriteNVRAM; - - if (cpqfc_alloc_private_data_pool(cpqfcHBAdata) != 0) { - printk(KERN_WARNING - "cpqfc: unable to allocate pool for passthru ioctls. " - "Passthru ioctls disabled.\n"); - } -} - - -/* (borrowed from linux/drivers/scsi/hosts.c) */ -static void launch_FCworker_thread(struct Scsi_Host *HostAdapter) -{ - DECLARE_MUTEX_LOCKED(sem); - - CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata; - - ENTER("launch_FC_worker_thread"); - - cpqfcHBAdata->notify_wt = &sem; - - /* must unlock before kernel_thread(), for it may cause a reschedule. */ - spin_unlock_irq(HostAdapter->host_lock); - kernel_thread((int (*)(void *))cpqfcTSWorkerThread, - (void *) HostAdapter, 0); - /* - * Now wait for the kernel error thread to initialize itself - - */ - down (&sem); - spin_lock_irq(HostAdapter->host_lock); - cpqfcHBAdata->notify_wt = NULL; - - LEAVE("launch_FC_worker_thread"); - -} - - -/* "Entry" point to discover if any supported PCI - bus adapter can be found -*/ -/* We're supporting: - * Compaq 64-bit, 66MHz HBA with Tachyon TS - * Agilent XL2 - * HP Tachyon - */ -#define HBA_TYPES 3 - -#ifndef PCI_DEVICE_ID_COMPAQ_ -#define PCI_DEVICE_ID_COMPAQ_TACHYON 0xa0fc -#endif - -static struct SupportedPCIcards cpqfc_boards[] __initdata = { - {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TACHYON}, - {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_TACHLITE}, - {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_TACHYON}, -}; - - -int cpqfcTS_detect(Scsi_Host_Template *ScsiHostTemplate) -{ - int NumberOfAdapters=0; // how many of our PCI adapters are found? - struct pci_dev *PciDev = NULL; - struct Scsi_Host *HostAdapter = NULL; - CPQFCHBA *cpqfcHBAdata = NULL; - struct timer_list *cpqfcTStimer = NULL; - int i; - - ENTER("cpqfcTS_detect"); - -#if LINUX_VERSION_CODE < LinuxVersionCode(2,3,27) - ScsiHostTemplate->proc_dir = &proc_scsi_cpqfcTS; -#else - ScsiHostTemplate->proc_name = "cpqfcTS"; -#endif - - for( i=0; i < HBA_TYPES; i++) - { - // look for all HBAs of each type - - while((PciDev = pci_find_device(cpqfc_boards[i].vendor_id, - cpqfc_boards[i].device_id, PciDev))) - { - - if (pci_enable_device(PciDev)) { - printk(KERN_ERR - "cpqfc: can't enable PCI device at %s\n", pci_name(PciDev)); - goto err_continue; - } - - if (pci_set_dma_mask(PciDev, CPQFCTS_DMA_MASK) != 0) { - printk(KERN_WARNING - "cpqfc: HBA cannot support required DMA mask, skipping.\n"); - goto err_disable_dev; - } - - // NOTE: (kernel 2.2.12-32) limits allocation to 128k bytes... - /* printk(" scsi_register allocating %d bytes for FC HBA\n", - (ULONG)sizeof(CPQFCHBA)); */ - - HostAdapter = scsi_register( ScsiHostTemplate, sizeof( CPQFCHBA ) ); - - if(HostAdapter == NULL) { - printk(KERN_WARNING - "cpqfc: can't register SCSI HBA, skipping.\n"); - goto err_disable_dev; - } - DEBUG_PCI( printk(" HBA found!\n")); - DEBUG_PCI( printk(" HostAdapter->PciDev->irq = %u\n", PciDev->irq) ); - DEBUG_PCI(printk(" PciDev->baseaddress[0]= %lx\n", - PciDev->resource[0].start)); - DEBUG_PCI(printk(" PciDev->baseaddress[1]= %lx\n", - PciDev->resource[1].start)); - DEBUG_PCI(printk(" PciDev->baseaddress[2]= %lx\n", - PciDev->resource[2].start)); - DEBUG_PCI(printk(" PciDev->baseaddress[3]= %lx\n", - PciDev->resource[3].start)); - - HostAdapter->irq = PciDev->irq; // copy for Scsi layers - - // HP Tachlite uses two (255-byte) ranges of Port I/O (lower & upper), - // for a total I/O port address space of 512 bytes. - // mask out the I/O port address (lower) & record - HostAdapter->io_port = (unsigned int) - PciDev->resource[1].start & PCI_BASE_ADDRESS_IO_MASK; - HostAdapter->n_io_port = 0xff; - - // i.e., expect 128 targets (arbitrary number), while the - // RA-4000 supports 32 LUNs - HostAdapter->max_id = 0; // incremented as devices log in - HostAdapter->max_lun = CPQFCTS_MAX_LUN; // LUNs per FC device - HostAdapter->max_channel = CPQFCTS_MAX_CHANNEL; // multiple busses? - - // get the pointer to our HBA specific data... (one for - // each HBA on the PCI bus(ses)). - cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata; - - // make certain our data struct is clear - memset( cpqfcHBAdata, 0, sizeof( CPQFCHBA ) ); - - - // initialize our HBA info - cpqfcHBAdata->HBAnum = NumberOfAdapters; - - cpqfcHBAdata->HostAdapter = HostAdapter; // back ptr - Cpqfc_initHBAdata( cpqfcHBAdata, PciDev ); // fill MOST fields - - cpqfcHBAdata->HBAnum = NumberOfAdapters; - spin_lock_init(&cpqfcHBAdata->hba_spinlock); - - // request necessary resources and check for conflicts - if( request_irq( HostAdapter->irq, - cpqfcTS_intr_handler, - SA_INTERRUPT | SA_SHIRQ, - DEV_NAME, - HostAdapter) ) - { - printk(KERN_WARNING "cpqfc: IRQ %u already used\n", HostAdapter->irq); - goto err_unregister; - } - - // Since we have two 256-byte I/O port ranges (upper - // and lower), check them both - if( !request_region( cpqfcHBAdata->fcChip.Registers.IOBaseU, - 0xff, DEV_NAME ) ) - { - printk(KERN_WARNING "cpqfc: address in use: %x\n", - cpqfcHBAdata->fcChip.Registers.IOBaseU); - goto err_free_irq; - } - - if( !request_region( cpqfcHBAdata->fcChip.Registers.IOBaseL, - 0xff, DEV_NAME ) ) - { - printk(KERN_WARNING "cpqfc: address in use: %x\n", - cpqfcHBAdata->fcChip.Registers.IOBaseL); - goto err_release_region_U; - } - - // OK, we have grabbed everything we need now. - DEBUG_PCI(printk(" Reserved 255 I/O addresses @ %x\n", - cpqfcHBAdata->fcChip.Registers.IOBaseL )); - DEBUG_PCI(printk(" Reserved 255 I/O addresses @ %x\n", - cpqfcHBAdata->fcChip.Registers.IOBaseU )); - - - - // start our kernel worker thread - - spin_lock_irq(HostAdapter->host_lock); - launch_FCworker_thread(HostAdapter); - - - // start our TimerTask... - - cpqfcTStimer = &cpqfcHBAdata->cpqfcTStimer; - - init_timer( cpqfcTStimer); // Linux clears next/prev values - cpqfcTStimer->expires = jiffies + HZ; // one second - cpqfcTStimer->data = (unsigned long)cpqfcHBAdata; // this adapter - cpqfcTStimer->function = cpqfcTSheartbeat; // handles timeouts, housekeeping - - add_timer( cpqfcTStimer); // give it to Linux - - - // now initialize our hardware... - if (cpqfcHBAdata->fcChip.InitializeTachyon( cpqfcHBAdata, 1,1)) { - printk(KERN_WARNING "cpqfc: initialization of HBA hardware failed.\n"); - goto err_release_region_L; - } - - cpqfcHBAdata->fcStatsTime = jiffies; // (for FC Statistics delta) - - // give our HBA time to initialize and login current devices... - { - // The Brocade switch (e.g. 2400, 2010, etc.) as of March 2000, - // has the following algorithm for FL_Port startup: - // Time(sec) Action - // 0: Device Plugin and LIP(F7,F7) transmission - // 1.0 LIP incoming - // 1.027 LISA incoming, no CLS! (link not up) - // 1.028 NOS incoming (switch test for N_Port) - // 1.577 ED_TOV expired, transmit LIPs again - // 3.0 LIP(F8,F7) incoming (switch passes Tach Prim.Sig) - // 3.028 LILP received, link up, FLOGI starts - // slowest(worst) case, measured on 1Gb Finisar GT analyzer - - unsigned long stop_time; - - spin_unlock_irq(HostAdapter->host_lock); - stop_time = jiffies + 4*HZ; - while ( time_before(jiffies, stop_time) ) - schedule(); // (our worker task needs to run) - - } - - spin_lock_irq(HostAdapter->host_lock); - NumberOfAdapters++; - spin_unlock_irq(HostAdapter->host_lock); - - continue; - -err_release_region_L: - release_region( cpqfcHBAdata->fcChip.Registers.IOBaseL, 0xff ); -err_release_region_U: - release_region( cpqfcHBAdata->fcChip.Registers.IOBaseU, 0xff ); -err_free_irq: - free_irq( HostAdapter->irq, HostAdapter); -err_unregister: - scsi_unregister( HostAdapter); -err_disable_dev: - pci_disable_device( PciDev ); -err_continue: - continue; - } // end of while() - } - - LEAVE("cpqfcTS_detect"); - - return NumberOfAdapters; -} - -#ifdef SUPPORT_RESET -static void my_ioctl_done (Scsi_Cmnd * SCpnt) -{ - struct request * req; - - req = SCpnt->request; - req->rq_status = RQ_SCSI_DONE; /* Busy, but indicate request done */ - - if (req->CPQFC_WAITING != NULL) - CPQFC_COMPLETE(req->CPQFC_WAITING); -} -#endif - -static int cpqfc_alloc_private_data_pool(CPQFCHBA *hba) -{ - hba->private_data_bits = NULL; - hba->private_data_pool = NULL; - hba->private_data_bits = - kmalloc(((CPQFC_MAX_PASSTHRU_CMDS+BITS_PER_LONG-1) / - BITS_PER_LONG)*sizeof(unsigned long), - GFP_KERNEL); - if (hba->private_data_bits == NULL) - return -1; - memset(hba->private_data_bits, 0, - ((CPQFC_MAX_PASSTHRU_CMDS+BITS_PER_LONG-1) / - BITS_PER_LONG)*sizeof(unsigned long)); - hba->private_data_pool = kmalloc(sizeof(cpqfc_passthru_private_t) * - CPQFC_MAX_PASSTHRU_CMDS, GFP_KERNEL); - if (hba->private_data_pool == NULL) { - kfree(hba->private_data_bits); - hba->private_data_bits = NULL; - return -1; - } - return 0; -} - -static void cpqfc_free_private_data_pool(CPQFCHBA *hba) -{ - kfree(hba->private_data_bits); - kfree(hba->private_data_pool); -} - -int is_private_data_of_cpqfc(CPQFCHBA *hba, void *pointer) -{ - /* Is pointer within our private data pool? - We use Scsi_Request->upper_private_data (normally - reserved for upper layer drivers, e.g. the sg driver) - We check to see if the pointer is ours by looking at - its address. Is this ok? Hmm, it occurs to me that - a user app might do something bad by using sg to send - a cpqfc passthrough ioctl with upper_data_private - forged to be somewhere in our pool..., though they'd - normally have to be root already to do this. */ - - return (pointer != NULL && - pointer >= (void *) hba->private_data_pool && - pointer < (void *) hba->private_data_pool + - sizeof(*hba->private_data_pool) * - CPQFC_MAX_PASSTHRU_CMDS); -} - -cpqfc_passthru_private_t *cpqfc_alloc_private_data(CPQFCHBA *hba) -{ - int i; - - do { - i = find_first_zero_bit(hba->private_data_bits, - CPQFC_MAX_PASSTHRU_CMDS); - if (i == CPQFC_MAX_PASSTHRU_CMDS) - return NULL; - } while ( test_and_set_bit(i & (BITS_PER_LONG - 1), - hba->private_data_bits+(i/BITS_PER_LONG)) != 0); - return &hba->private_data_pool[i]; -} - -void cpqfc_free_private_data(CPQFCHBA *hba, cpqfc_passthru_private_t *data) -{ - int i; - i = data - hba->private_data_pool; - clear_bit(i&(BITS_PER_LONG-1), - hba->private_data_bits+(i/BITS_PER_LONG)); -} - -int cpqfcTS_ioctl( struct scsi_device *ScsiDev, int Cmnd, void *arg) -{ - int result = 0; - struct Scsi_Host *HostAdapter = ScsiDev->host; - CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata; - PTACHYON fcChip = &cpqfcHBAdata->fcChip; - PFC_LOGGEDIN_PORT pLoggedInPort = NULL; - struct scsi_cmnd *DumCmnd; - int i, j; - VENDOR_IOCTL_REQ ioc; - cpqfc_passthru_t *vendor_cmd; - Scsi_Device *SDpnt; - Scsi_Request *ScsiPassThruReq; - cpqfc_passthru_private_t *privatedata; - - ENTER("cpqfcTS_ioctl "); - - // printk("ioctl CMND %d", Cmnd); - switch (Cmnd) { - // Passthrough provides a mechanism to bypass the RAID - // or other controller and talk directly to the devices - // (e.g. physical disk drive) - // Passthrough commands, unfortunately, tend to be vendor - // specific; this is tailored to COMPAQ's RAID (RA4x00) - case CPQFCTS_SCSI_PASSTHRU: - { - void *buf = NULL; // for kernel space buffer for user data - - /* Check that our pool got allocated ok. */ - if (cpqfcHBAdata->private_data_pool == NULL) - return -ENOMEM; - - if( !arg) - return -EINVAL; - - // must be super user to send stuff directly to the - // controller and/or physical drives... - if( !capable(CAP_SYS_RAWIO) ) - return -EPERM; - - // copy the caller's struct to our space. - if( copy_from_user( &ioc, arg, sizeof( VENDOR_IOCTL_REQ))) - return( -EFAULT); - - vendor_cmd = ioc.argp; // i.e., CPQ specific command struct - - // If necessary, grab a kernel/DMA buffer - if( vendor_cmd->len) - { - buf = kmalloc( vendor_cmd->len, GFP_KERNEL); - if( !buf) - return -ENOMEM; - } - // Now build a Scsi_Request to pass down... - ScsiPassThruReq = scsi_allocate_request(ScsiDev, GFP_KERNEL); - if (ScsiPassThruReq == NULL) { - kfree(buf); - return -ENOMEM; - } - ScsiPassThruReq->upper_private_data = - cpqfc_alloc_private_data(cpqfcHBAdata); - if (ScsiPassThruReq->upper_private_data == NULL) { - kfree(buf); - scsi_release_request(ScsiPassThruReq); // "de-allocate" - return -ENOMEM; - } - - if (vendor_cmd->rw_flag == VENDOR_WRITE_OPCODE) { - if (vendor_cmd->len) { // Need data from user? - if (copy_from_user(buf, vendor_cmd->bufp, - vendor_cmd->len)) { - kfree(buf); - cpqfc_free_private_data(cpqfcHBAdata, - ScsiPassThruReq->upper_private_data); - scsi_release_request(ScsiPassThruReq); - return( -EFAULT); - } - } - ScsiPassThruReq->sr_data_direction = DMA_TO_DEVICE; - } else if (vendor_cmd->rw_flag == VENDOR_READ_OPCODE) { - ScsiPassThruReq->sr_data_direction = DMA_FROM_DEVICE; - } else - // maybe this means a bug in the user app - ScsiPassThruReq->sr_data_direction = DMA_BIDIRECTIONAL; - - ScsiPassThruReq->sr_cmd_len = 0; // set correctly by scsi_do_req() - ScsiPassThruReq->sr_sense_buffer[0] = 0; - ScsiPassThruReq->sr_sense_buffer[2] = 0; - - // We copy the scheme used by sd.c:spinup_disk() to submit commands - // to our own HBA. We do this in order to stall the - // thread calling the IOCTL until it completes, and use - // the same "_quecommand" function for synchronizing - // FC Link events with our "worker thread". - - privatedata = ScsiPassThruReq->upper_private_data; - privatedata->bus = vendor_cmd->bus; - privatedata->pdrive = vendor_cmd->pdrive; - - // eventually gets us to our own _quecommand routine - scsi_wait_req(ScsiPassThruReq, - &vendor_cmd->cdb[0], buf, vendor_cmd->len, - 10*HZ, // timeout - 1); // retries - result = ScsiPassThruReq->sr_result; - - // copy any sense data back to caller - if( result != 0 ) - { - memcpy( vendor_cmd->sense_data, // see struct def - size=40 - ScsiPassThruReq->sr_sense_buffer, - sizeof(ScsiPassThruReq->sr_sense_buffer) < - sizeof(vendor_cmd->sense_data) ? - sizeof(ScsiPassThruReq->sr_sense_buffer) : - sizeof(vendor_cmd->sense_data) - ); - } - SDpnt = ScsiPassThruReq->sr_device; - /* upper_private_data is already freed in call_scsi_done() */ - scsi_release_request(ScsiPassThruReq); // "de-allocate" - ScsiPassThruReq = NULL; - - // need to pass data back to user (space)? - if( (vendor_cmd->rw_flag == VENDOR_READ_OPCODE) && - vendor_cmd->len ) - if( copy_to_user( vendor_cmd->bufp, buf, vendor_cmd->len)) - result = -EFAULT; - - kfree(buf); - - return result; - } - - case CPQFCTS_GETPCIINFO: - { - cpqfc_pci_info_struct pciinfo; - - if( !arg) - return -EINVAL; - - - - pciinfo.bus = cpqfcHBAdata->PciDev->bus->number; - pciinfo.dev_fn = cpqfcHBAdata->PciDev->devfn; - pciinfo.board_id = cpqfcHBAdata->PciDev->device | - (cpqfcHBAdata->PciDev->vendor <<16); - - if(copy_to_user( arg, &pciinfo, sizeof(cpqfc_pci_info_struct))) - return( -EFAULT); - return 0; - } - - case CPQFCTS_GETDRIVVER: - { - DriverVer_type DriverVer = - CPQFCTS_DRIVER_VER( VER_MAJOR,VER_MINOR,VER_SUBMINOR); - - if( !arg) - return -EINVAL; - - if(copy_to_user( arg, &DriverVer, sizeof(DriverVer))) - return( -EFAULT); - return 0; - } - - - - case CPQFC_IOCTL_FC_TARGET_ADDRESS: - // can we find an FC device mapping to this SCSI target? -/* DumCmnd.channel = ScsiDev->channel; */ // For searching -/* DumCmnd.target = ScsiDev->id; */ -/* DumCmnd.lun = ScsiDev->lun; */ - - DumCmnd = scsi_get_command (ScsiDev, GFP_KERNEL); - if (!DumCmnd) - return -ENOMEM; - - pLoggedInPort = fcFindLoggedInPort( fcChip, - DumCmnd, // search Scsi Nexus - 0, // DON'T search linked list for FC port id - NULL, // DON'T search linked list for FC WWN - NULL); // DON'T care about end of list - scsi_put_command (DumCmnd); - if (pLoggedInPort == NULL) { - result = -ENXIO; - break; - } - result = access_ok(VERIFY_WRITE, arg, sizeof(Scsi_FCTargAddress)) ? 0 : -EFAULT; - if (result) break; - - put_user(pLoggedInPort->port_id, - &((Scsi_FCTargAddress *) arg)->host_port_id); - - for( i=3,j=0; i>=0; i--) // copy the LOGIN port's WWN - put_user(pLoggedInPort->u.ucWWN[i], - &((Scsi_FCTargAddress *) arg)->host_wwn[j++]); - for( i=7; i>3; i--) // copy the LOGIN port's WWN - put_user(pLoggedInPort->u.ucWWN[i], - &((Scsi_FCTargAddress *) arg)->host_wwn[j++]); - break; - - - case CPQFC_IOCTL_FC_TDR: - - result = cpqfcTS_TargetDeviceReset( ScsiDev, 0); - - break; - - - - - default: - result = -EINVAL; - break; - } - - LEAVE("cpqfcTS_ioctl"); - return result; -} - - -/* "Release" the Host Bus Adapter... - disable interrupts, stop the HBA, release the interrupt, - and free all resources */ - -int cpqfcTS_release(struct Scsi_Host *HostAdapter) -{ - CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata; - - - ENTER("cpqfcTS_release"); - - DEBUG_PCI( printk(" cpqfcTS: delete timer...\n")); - del_timer( &cpqfcHBAdata->cpqfcTStimer); - - // disable the hardware... - DEBUG_PCI( printk(" disable hardware, destroy queues, free mem\n")); - cpqfcHBAdata->fcChip.ResetTachyon( cpqfcHBAdata, CLEAR_FCPORTS); - - // kill kernel thread - if( cpqfcHBAdata->worker_thread ) // (only if exists) - { - DECLARE_MUTEX_LOCKED(sem); // synchronize thread kill - - cpqfcHBAdata->notify_wt = &sem; - DEBUG_PCI( printk(" killing kernel thread\n")); - send_sig( SIGKILL, cpqfcHBAdata->worker_thread, 1); - down( &sem); - cpqfcHBAdata->notify_wt = NULL; - - } - - cpqfc_free_private_data_pool(cpqfcHBAdata); - // free Linux resources - DEBUG_PCI( printk(" cpqfcTS: freeing resources...\n")); - free_irq( HostAdapter->irq, HostAdapter); - scsi_unregister( HostAdapter); - release_region( cpqfcHBAdata->fcChip.Registers.IOBaseL, 0xff); - release_region( cpqfcHBAdata->fcChip.Registers.IOBaseU, 0xff); - /* we get "vfree: bad address" executing this - need to investigate... - if( (void*)((unsigned long)cpqfcHBAdata->fcChip.Registers.MemBase) != - cpqfcHBAdata->fcChip.Registers.ReMapMemBase) - vfree( cpqfcHBAdata->fcChip.Registers.ReMapMemBase); -*/ - pci_disable_device( cpqfcHBAdata->PciDev); - - LEAVE("cpqfcTS_release"); - return 0; -} - - -const char * cpqfcTS_info(struct Scsi_Host *HostAdapter) -{ - static char buf[300]; - CPQFCHBA *cpqfcHBA; - int BusSpeed, BusWidth; - - // get the pointer to our Scsi layer HBA buffer - cpqfcHBA = (CPQFCHBA *)HostAdapter->hostdata; - - BusWidth = (cpqfcHBA->fcChip.Registers.PCIMCTR &0x4) > 0 ? - 64 : 32; - - if( cpqfcHBA->fcChip.Registers.TYconfig.value & 0x80000000) - BusSpeed = 66; - else - BusSpeed = 33; - - sprintf(buf, -"%s: WWN %08X%08X\n on PCI bus %d device 0x%02x irq %d IObaseL 0x%x, MEMBASE 0x%x\nPCI bus width %d bits, bus speed %d MHz\nFCP-SCSI Driver v%d.%d.%d", - cpqfcHBA->fcChip.Name, - cpqfcHBA->fcChip.Registers.wwn_hi, - cpqfcHBA->fcChip.Registers.wwn_lo, - cpqfcHBA->PciDev->bus->number, - cpqfcHBA->PciDev->device, - HostAdapter->irq, - cpqfcHBA->fcChip.Registers.IOBaseL, - cpqfcHBA->fcChip.Registers.MemBase, - BusWidth, - BusSpeed, - VER_MAJOR, VER_MINOR, VER_SUBMINOR -); - - - cpqfcTSDecodeGBICtype( &cpqfcHBA->fcChip, &buf[ strlen(buf)]); - cpqfcTSGetLPSM( &cpqfcHBA->fcChip, &buf[ strlen(buf)]); - return buf; -} - -// -// /proc/scsi support. The following routines allow us to do 'normal' -// sprintf like calls to return the currently requested piece (buflenght -// chars, starting at bufoffset) of the file. Although procfs allows for -// a 1 Kb bytes overflow after te supplied buffer, I consider it bad -// programming to use it to make programming a little simpler. This piece -// of coding is borrowed from ncr53c8xx.c with some modifications -// -struct info_str -{ - char *buffer; // Pointer to output buffer - int buflength; // It's length - int bufoffset; // File offset corresponding with buf[0] - int buffillen; // Current filled length - int filpos; // Current file offset -}; - -static void copy_mem_info(struct info_str *info, char *data, int datalen) -{ - - if (info->filpos < info->bufoffset) { // Current offset before buffer offset - if (info->filpos + datalen <= info->bufoffset) { - info->filpos += datalen; // Discard if completely before buffer - return; - } else { // Partial copy, set to begin - data += (info->bufoffset - info->filpos); - datalen -= (info->bufoffset - info->filpos); - info->filpos = info->bufoffset; - } - } - - info->filpos += datalen; // Update current offset - - if (info->buffillen == info->buflength) // Buffer full, discard - return; - - if (info->buflength - info->buffillen < datalen) // Overflows buffer ? - datalen = info->buflength - info->buffillen; - - memcpy(info->buffer + info->buffillen, data, datalen); - info->buffillen += datalen; -} - -static int copy_info(struct info_str *info, char *fmt, ...) -{ - va_list args; - char buf[400]; - int len; - - va_start(args, fmt); - len = vsprintf(buf, fmt, args); - va_end(args); - - copy_mem_info(info, buf, len); - return len; -} - - -// Routine to get data for /proc RAM filesystem -// -int cpqfcTS_proc_info (struct Scsi_Host *host, char *buffer, char **start, off_t offset, int length, - int inout) -{ - struct scsi_cmnd *DumCmnd; - struct scsi_device *ScsiDev; - int Chan, Targ, i; - struct info_str info; - CPQFCHBA *cpqfcHBA; - PTACHYON fcChip; - PFC_LOGGEDIN_PORT pLoggedInPort; - char buf[81]; - - if (inout) return -EINVAL; - - // get the pointer to our Scsi layer HBA buffer - cpqfcHBA = (CPQFCHBA *)host->hostdata; - fcChip = &cpqfcHBA->fcChip; - - *start = buffer; - - info.buffer = buffer; - info.buflength = length; - info.bufoffset = offset; - info.filpos = 0; - info.buffillen = 0; - copy_info(&info, "Driver version = %d.%d.%d", VER_MAJOR, VER_MINOR, VER_SUBMINOR); - cpqfcTSDecodeGBICtype( &cpqfcHBA->fcChip, &buf[0]); - cpqfcTSGetLPSM( &cpqfcHBA->fcChip, &buf[ strlen(buf)]); - copy_info(&info, "%s\n", buf); - -#define DISPLAY_WWN_INFO -#ifdef DISPLAY_WWN_INFO - ScsiDev = scsi_get_host_dev (host); - if (!ScsiDev) - return -ENOMEM; - DumCmnd = scsi_get_command (ScsiDev, GFP_KERNEL); - if (!DumCmnd) { - scsi_free_host_dev (ScsiDev); - return -ENOMEM; - } - copy_info(&info, "WWN database: (\"port_id: 000000\" means disconnected)\n"); - for ( Chan=0; Chan <= host->max_channel; Chan++) { - DumCmnd->device->channel = Chan; - for (Targ=0; Targ <= host->max_id; Targ++) { - DumCmnd->device->id = Targ; - if ((pLoggedInPort = fcFindLoggedInPort( fcChip, - DumCmnd, // search Scsi Nexus - 0, // DON'T search list for FC port id - NULL, // DON'T search list for FC WWN - NULL))){ // DON'T care about end of list - copy_info(&info, "Host: scsi%d Channel: %02d TargetId: %02d -> WWN: ", - host->host_no, Chan, Targ); - for( i=3; i>=0; i--) // copy the LOGIN port's WWN - copy_info(&info, "%02X", pLoggedInPort->u.ucWWN[i]); - for( i=7; i>3; i--) // copy the LOGIN port's WWN - copy_info(&info, "%02X", pLoggedInPort->u.ucWWN[i]); - copy_info(&info, " port_id: %06X\n", pLoggedInPort->port_id); - } - } - } - - scsi_put_command (DumCmnd); - scsi_free_host_dev (ScsiDev); -#endif - - - - - -// Unfortunately, the proc_info buffer isn't big enough -// for everything we would like... -// For FC stats, compile this and turn off WWN stuff above -//#define DISPLAY_FC_STATS -#ifdef DISPLAY_FC_STATS -// get the Fibre Channel statistics - { - int DeltaSecs = (jiffies - cpqfcHBA->fcStatsTime) / HZ; - int days,hours,minutes,secs; - - days = DeltaSecs / (3600*24); // days - hours = (DeltaSecs% (3600*24)) / 3600; // hours - minutes = (DeltaSecs%3600 /60); // minutes - secs = DeltaSecs%60; // secs -copy_info( &info, "Fibre Channel Stats (time dd:hh:mm:ss %02u:%02u:%02u:%02u\n", - days, hours, minutes, secs); - } - - cpqfcHBA->fcStatsTime = jiffies; // (for next delta) - - copy_info( &info, " LinkUp %9u LinkDown %u\n", - fcChip->fcStats.linkUp, fcChip->fcStats.linkDown); - - copy_info( &info, " Loss of Signal %9u Loss of Sync %u\n", - fcChip->fcStats.LossofSignal, fcChip->fcStats.LossofSync); - - copy_info( &info, " Discarded Frames %9u Bad CRC Frame %u\n", - fcChip->fcStats.Dis_Frm, fcChip->fcStats.Bad_CRC); - - copy_info( &info, " TACH LinkFailTX %9u TACH LinkFailRX %u\n", - fcChip->fcStats.linkFailTX, fcChip->fcStats.linkFailRX); - - copy_info( &info, " TACH RxEOFa %9u TACH Elastic Store %u\n", - fcChip->fcStats.Rx_EOFa, fcChip->fcStats.e_stores); - - copy_info( &info, " BufferCreditWait %9uus TACH FM Inits %u\n", - fcChip->fcStats.BB0_Timer*10, fcChip->fcStats.FMinits ); - - copy_info( &info, " FC-2 Timeouts %9u FC-2 Logouts %u\n", - fcChip->fcStats.timeouts, fcChip->fcStats.logouts); - - copy_info( &info, " FC-2 Aborts %9u FC-4 Aborts %u\n", - fcChip->fcStats.FC2aborted, fcChip->fcStats.FC4aborted); - - // clear the counters - cpqfcTSClearLinkStatusCounters( fcChip); -#endif - - return info.buffillen; -} - - -#if DEBUG_CMND - -UCHAR *ScsiToAscii( UCHAR ScsiCommand) -{ - -/*++ - -Routine Description: - - Converts a SCSI command to a text string for debugging purposes. - - -Arguments: - - ScsiCommand -- hex value SCSI Command - - -Return Value: - - An ASCII, null-terminated string if found, else returns NULL. - -Original code from M. McGowen, Compaq ---*/ - - - switch (ScsiCommand) - { - case 0x00: - return( "Test Unit Ready" ); - - case 0x01: - return( "Rezero Unit or Rewind" ); - - case 0x02: - return( "Request Block Address" ); - - case 0x03: - return( "Requese Sense" ); - - case 0x04: - return( "Format Unit" ); - - case 0x05: - return( "Read Block Limits" ); - - case 0x07: - return( "Reassign Blocks" ); - - case 0x08: - return( "Read (6)" ); - - case 0x0a: - return( "Write (6)" ); - - case 0x0b: - return( "Seek (6)" ); - - case 0x12: - return( "Inquiry" ); - - case 0x15: - return( "Mode Select (6)" ); - - case 0x16: - return( "Reserve" ); - - case 0x17: - return( "Release" ); - - case 0x1a: - return( "ModeSen(6)" ); - - case 0x1b: - return( "Start/Stop Unit" ); - - case 0x1c: - return( "Receive Diagnostic Results" ); - - case 0x1d: - return( "Send Diagnostic" ); - - case 0x25: - return( "Read Capacity" ); - - case 0x28: - return( "Read (10)" ); - - case 0x2a: - return( "Write (10)" ); - - case 0x2b: - return( "Seek (10)" ); - - case 0x2e: - return( "Write and Verify" ); - - case 0x2f: - return( "Verify" ); - - case 0x34: - return( "Pre-Fetch" ); - - case 0x35: - return( "Synchronize Cache" ); - - case 0x37: - return( "Read Defect Data (10)" ); - - case 0x3b: - return( "Write Buffer" ); - - case 0x3c: - return( "Read Buffer" ); - - case 0x3e: - return( "Read Long" ); - - case 0x3f: - return( "Write Long" ); - - case 0x41: - return( "Write Same" ); - - case 0x4c: - return( "Log Select" ); - - case 0x4d: - return( "Log Sense" ); - - case 0x56: - return( "Reserve (10)" ); - - case 0x57: - return( "Release (10)" ); - - case 0xa0: - return( "ReportLuns" ); - - case 0xb7: - return( "Read Defect Data (12)" ); - - case 0xca: - return( "Peripheral Device Addressing SCSI Passthrough" ); - - case 0xcb: - return( "Compaq Array Firmware Passthrough" ); - - default: - return( NULL ); - } - -} // end ScsiToAscii() - -void cpqfcTS_print_scsi_cmd(Scsi_Cmnd * cmd) -{ - -printk("cpqfcTS: (%s) chnl 0x%02x, trgt = 0x%02x, lun = 0x%02x, cmd_len = 0x%02x\n", - ScsiToAscii( cmd->cmnd[0]), cmd->channel, cmd->target, cmd->lun, cmd->cmd_len); - -if( cmd->cmnd[0] == 0) // Test Unit Ready? -{ - int i; - - printk("Cmnd->request_bufflen = 0x%X, ->use_sg = %d, ->bufflen = %d\n", - cmd->request_bufflen, cmd->use_sg, cmd->bufflen); - printk("Cmnd->request_buffer = %p, ->sglist_len = %d, ->buffer = %p\n", - cmd->request_buffer, cmd->sglist_len, cmd->buffer); - for (i = 0; i < cmd->cmd_len; i++) - printk("0x%02x ", cmd->cmnd[i]); - printk("\n"); -} - -} - -#endif /* DEBUG_CMND */ - - - - -static void QueCmndOnBoardLock( CPQFCHBA *cpqfcHBAdata, Scsi_Cmnd *Cmnd) -{ - int i; - - for( i=0; i< CPQFCTS_REQ_QUEUE_LEN; i++) - { // find spare slot - if( cpqfcHBAdata->BoardLockCmnd[i] == NULL ) - { - cpqfcHBAdata->BoardLockCmnd[i] = Cmnd; -// printk(" BoardLockCmnd[%d] %p Queued, chnl/target/lun %d/%d/%d\n", -// i,Cmnd, Cmnd->channel, Cmnd->target, Cmnd->lun); - break; - } - } - if( i >= CPQFCTS_REQ_QUEUE_LEN) - { - printk(" cpqfcTS WARNING: Lost Cmnd %p on BoardLock Q full!", Cmnd); - } - -} - - -static void QueLinkDownCmnd( CPQFCHBA *cpqfcHBAdata, Scsi_Cmnd *Cmnd) -{ - int indx; - - // Remember the command ptr so we can return; we'll complete when - // the device comes back, causing immediate retry - for( indx=0; indx < CPQFCTS_REQ_QUEUE_LEN; indx++)//, SCptr++) - { - if( cpqfcHBAdata->LinkDnCmnd[indx] == NULL ) // available? - { -#ifdef DUMMYCMND_DBG - printk(" @add Cmnd %p to LnkDnCmnd[%d]@ ", Cmnd,indx); -#endif - cpqfcHBAdata->LinkDnCmnd[indx] = Cmnd; - break; - } - } - - if( indx >= CPQFCTS_REQ_QUEUE_LEN ) // no space for Cmnd?? - { - // this will result in an _abort call later (with possible trouble) - printk("no buffer for LinkDnCmnd!! %p\n", Cmnd); - } -} - - - - - -// The file <scsi/scsi_host.h> says not to call scsi_done from -// inside _queuecommand, so we'll do it from the heartbeat timer -// (clarification: Turns out it's ok to call scsi_done from queuecommand -// for cases that don't go to the hardware like scsi cmds destined -// for LUNs we know don't exist, so this code might be simplified...) - -static void QueBadTargetCmnd( CPQFCHBA *cpqfcHBAdata, Scsi_Cmnd *Cmnd) -{ - int i; - // printk(" can't find target %d\n", Cmnd->target); - - for( i=0; i< CPQFCTS_MAX_TARGET_ID; i++) - { // find spare slot - if( cpqfcHBAdata->BadTargetCmnd[i] == NULL ) - { - cpqfcHBAdata->BadTargetCmnd[i] = Cmnd; -// printk(" BadTargetCmnd[%d] %p Queued, chnl/target/lun %d/%d/%d\n", -// i,Cmnd, Cmnd->channel, Cmnd->target, Cmnd->lun); - break; - } - } -} - - -// This is the "main" entry point for Linux Scsi commands -- -// it all starts here. - -int cpqfcTS_queuecommand(Scsi_Cmnd *Cmnd, void (* done)(Scsi_Cmnd *)) -{ - struct Scsi_Host *HostAdapter = Cmnd->device->host; - CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata; - PTACHYON fcChip = &cpqfcHBAdata->fcChip; - TachFCHDR_GCMND fchs; // only use for FC destination id field - PFC_LOGGEDIN_PORT pLoggedInPort; - ULONG ulStatus, SESTtype; - LONG ExchangeID; - - - - - ENTER("cpqfcTS_queuecommand"); - - PCI_TRACEO( (ULONG)Cmnd, 0x98) - - - Cmnd->scsi_done = done; -#ifdef DEBUG_CMND - cpqfcTS_print_scsi_cmd( Cmnd); -#endif - - // prevent board contention with kernel thread... - - if( cpqfcHBAdata->BoardLock ) - { -// printk(" @BrdLck Hld@ "); - QueCmndOnBoardLock( cpqfcHBAdata, Cmnd); - } - - else - { - - // in the current system (2.2.12), this routine is called - // after spin_lock_irqsave(), so INTs are disabled. However, - // we might have something pending in the LinkQ, which - // might cause the WorkerTask to run. In case that - // happens, make sure we lock it out. - - - - PCI_TRACE( 0x98) - CPQ_SPINLOCK_HBA( cpqfcHBAdata) - PCI_TRACE( 0x98) - - // can we find an FC device mapping to this SCSI target? - pLoggedInPort = fcFindLoggedInPort( fcChip, - Cmnd, // search Scsi Nexus - 0, // DON'T search linked list for FC port id - NULL, // DON'T search linked list for FC WWN - NULL); // DON'T care about end of list - - if( pLoggedInPort == NULL ) // not found! - { -// printk(" @Q bad targ cmnd %p@ ", Cmnd); - QueBadTargetCmnd( cpqfcHBAdata, Cmnd); - } - else if (Cmnd->device->lun >= CPQFCTS_MAX_LUN) - { - printk(KERN_WARNING "cpqfc: Invalid LUN: %d\n", Cmnd->device->lun); - QueBadTargetCmnd( cpqfcHBAdata, Cmnd); - } - - else // we know what FC device to send to... - { - - // does this device support FCP target functions? - // (determined by PRLI field) - - if( !(pLoggedInPort->fcp_info & TARGET_FUNCTION) ) - { - printk(" Doesn't support TARGET functions port_id %Xh\n", - pLoggedInPort->port_id ); - QueBadTargetCmnd( cpqfcHBAdata, Cmnd); - } - - // In this case (previous login OK), the device is temporarily - // unavailable waiting for re-login, in which case we expect it - // to be back in between 25 - 500ms. - // If the FC port doesn't log back in within several seconds - // (i.e. implicit "logout"), or we get an explicit logout, - // we set "device_blocked" in Scsi_Device struct; in this - // case 30 seconds will elapse before Linux/Scsi sends another - // command to the device. - else if( pLoggedInPort->prli != TRUE ) - { -// printk("Device (Chnl/Target %d/%d) invalid PRLI, port_id %06lXh\n", -// Cmnd->channel, Cmnd->target, pLoggedInPort->port_id); - QueLinkDownCmnd( cpqfcHBAdata, Cmnd); -// Need to use "blocked" flag?? -// Cmnd->device->device_blocked = TRUE; // just let it timeout - } - else // device supports TARGET functions, and is logged in... - { - // (context of fchs is to "reply" to...) - fchs.s_id = pLoggedInPort->port_id; // destination FC address - - // what is the data direction? For data TO the device, - // we need IWE (Intiator Write Entry). Otherwise, IRE. - - if( Cmnd->cmnd[0] == WRITE_10 || - Cmnd->cmnd[0] == WRITE_6 || - Cmnd->cmnd[0] == WRITE_BUFFER || - Cmnd->cmnd[0] == VENDOR_WRITE_OPCODE || // CPQ specific - Cmnd->cmnd[0] == MODE_SELECT ) - { - SESTtype = SCSI_IWE; // data from HBA to Device - } - else - SESTtype = SCSI_IRE; // data from Device to HBA - - ulStatus = cpqfcTSBuildExchange( - cpqfcHBAdata, - SESTtype, // e.g. Initiator Read Entry (IRE) - &fchs, // we are originator; only use d_id - Cmnd, // Linux SCSI command (with scatter/gather list) - &ExchangeID );// fcController->fcExchanges index, -1 if failed - - if( !ulStatus ) // Exchange setup? - - { - if( cpqfcHBAdata->BoardLock ) - { - TriggerHBA( fcChip->Registers.ReMapMemBase, 0); - printk(" @bl! %d, xID %Xh@ ", current->pid, ExchangeID); - } - - ulStatus = cpqfcTSStartExchange( cpqfcHBAdata, ExchangeID ); - if( !ulStatus ) - { - PCI_TRACEO( ExchangeID, 0xB8) - // submitted to Tach's Outbound Que (ERQ PI incremented) - // waited for completion for ELS type (Login frames issued - // synchronously) - } - else - // check reason for Exchange not being started - we might - // want to Queue and start later, or fail with error - { - printk("quecommand: cpqfcTSStartExchange failed: %Xh\n", ulStatus ); - } - } // end good BuildExchange status - - else // SEST table probably full -- why? hardware hang? - { - printk("quecommand: cpqfcTSBuildExchange faild: %Xh\n", ulStatus); - } - } // end can't do FCP-SCSI target functions - } // end can't find target (FC device) - - CPQ_SPINUNLOCK_HBA( cpqfcHBAdata) - } - - PCI_TRACEO( (ULONG)Cmnd, 0x9C) - LEAVE("cpqfcTS_queuecommand"); - return 0; -} - - -// Entry point for upper Scsi layer intiated abort. Typically -// this is called if the command (for hard disk) fails to complete -// in 30 seconds. This driver intends to complete all disk commands -// within Exchange ".timeOut" seconds (now 7) with target status, or -// in case of ".timeOut" expiration, a DID_SOFT_ERROR which causes -// immediate retry. -// If any disk commands get the _abort call, except for the case that -// the physical device was removed or unavailable due to hardware -// errors, it should be considered a driver error and reported to -// the author. - -int cpqfcTS_abort(Scsi_Cmnd *Cmnd) -{ -// printk(" cpqfcTS_abort called?? \n"); - return 0; -} - -int cpqfcTS_eh_abort(Scsi_Cmnd *Cmnd) -{ - - struct Scsi_Host *HostAdapter = Cmnd->device->host; - // get the pointer to our Scsi layer HBA buffer - CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata; - PTACHYON fcChip = &cpqfcHBAdata->fcChip; - FC_EXCHANGES *Exchanges = fcChip->Exchanges; - int i; - ENTER("cpqfcTS_eh_abort"); - - Cmnd->result = DID_ABORT <<16; // assume we'll find it - - printk(" @Linux _abort Scsi_Cmnd %p ", Cmnd); - // See if we can find a Cmnd pointer that matches... - // The most likely case is we accepted the command - // from Linux Scsi (e.g. ceated a SEST entry) and it - // got lost somehow. If we can't find any reference - // to the passed pointer, we can only presume it - // got completed as far as our driver is concerned. - // If we found it, we will try to abort it through - // common mechanism. If FC ABTS is successful (ACC) - // or is rejected (RJT) by target, we will call - // Scsi "done" quickly. Otherwise, the ABTS will timeout - // and we'll call "done" later. - - // Search the SEST exchanges for a matching Cmnd ptr. - for( i=0; i< TACH_SEST_LEN; i++) - { - if( Exchanges->fcExchange[i].Cmnd == Cmnd ) - { - - // found it! - printk(" x_ID %Xh, type %Xh\n", i, Exchanges->fcExchange[i].type); - - Exchanges->fcExchange[i].status = INITIATOR_ABORT; // seconds default - Exchanges->fcExchange[i].timeOut = 10; // seconds default (changed later) - - // Since we need to immediately return the aborted Cmnd to Scsi - // upper layers, we can't make future reference to any of its - // fields (e.g the Nexus). - - cpqfcTSPutLinkQue( cpqfcHBAdata, BLS_ABTS, &i); - - break; - } - } - - if( i >= TACH_SEST_LEN ) // didn't find Cmnd ptr in chip's SEST? - { - // now search our non-SEST buffers (i.e. Cmnd waiting to - // start on the HBA or waiting to complete with error for retry). - - // first check BadTargetCmnd - for( i=0; i< CPQFCTS_MAX_TARGET_ID; i++) - { - if( cpqfcHBAdata->BadTargetCmnd[i] == Cmnd ) - { - cpqfcHBAdata->BadTargetCmnd[i] = NULL; - printk("in BadTargetCmnd Q\n"); - goto Done; // exit - } - } - - // if not found above... - - for( i=0; i < CPQFCTS_REQ_QUEUE_LEN; i++) - { - if( cpqfcHBAdata->LinkDnCmnd[i] == Cmnd ) - { - cpqfcHBAdata->LinkDnCmnd[i] = NULL; - printk("in LinkDnCmnd Q\n"); - goto Done; - } - } - - - for( i=0; i< CPQFCTS_REQ_QUEUE_LEN; i++) - { // find spare slot - if( cpqfcHBAdata->BoardLockCmnd[i] == Cmnd ) - { - cpqfcHBAdata->BoardLockCmnd[i] = NULL; - printk("in BoardLockCmnd Q\n"); - goto Done; - } - } - - Cmnd->result = DID_ERROR <<16; // Hmmm... - printk("Not found! "); -// panic("_abort"); - } - -Done: - -// panic("_abort"); - LEAVE("cpqfcTS_eh_abort"); - return 0; // (see scsi.h) -} - - -// FCP-SCSI Target Device Reset -// See dpANS Fibre Channel Protocol for SCSI -// X3.269-199X revision 12, pg 25 - -#ifdef SUPPORT_RESET - -int cpqfcTS_TargetDeviceReset( Scsi_Device *ScsiDev, - unsigned int reset_flags) -{ - int timeout = 10*HZ; - int retries = 1; - char scsi_cdb[12]; - int result; - Scsi_Cmnd * SCpnt; - Scsi_Device * SDpnt; - -// FIXME, cpqfcTS_TargetDeviceReset needs to be fixed -// similarly to how the passthrough ioctl was fixed -// around the 2.5.30 kernel. Scsi_Cmnd replaced with -// Scsi_Request, etc. -// For now, so people don't fall into a hole... - - // printk(" ENTERING cpqfcTS_TargetDeviceReset() - flag=%d \n",reset_flags); - - if (ScsiDev->host->eh_active) return FAILED; - - memset( scsi_cdb, 0, sizeof( scsi_cdb)); - - scsi_cdb[0] = RELEASE; - - SCpnt = scsi_get_command(ScsiDev, GFP_KERNEL); - { - CPQFC_DECLARE_COMPLETION(wait); - - SCpnt->SCp.buffers_residual = FCP_TARGET_RESET; - - // FIXME: this would panic, SCpnt->request would be NULL. - SCpnt->request->CPQFC_WAITING = &wait; - scsi_do_cmd(SCpnt, scsi_cdb, NULL, 0, my_ioctl_done, timeout, retries); - CPQFC_WAIT_FOR_COMPLETION(&wait); - SCpnt->request->CPQFC_WAITING = NULL; - } - - - if(driver_byte(SCpnt->result) != 0) - switch(SCpnt->sense_buffer[2] & 0xf) { - case ILLEGAL_REQUEST: - if(cmd[0] == ALLOW_MEDIUM_REMOVAL) dev->lockable = 0; - else printk("SCSI device (ioctl) reports ILLEGAL REQUEST.\n"); - break; - case NOT_READY: // This happens if there is no disc in drive - if(dev->removable && (cmd[0] != TEST_UNIT_READY)){ - printk(KERN_INFO "Device not ready. Make sure there is a disc in the drive.\n"); - break; - } - case UNIT_ATTENTION: - if (dev->removable){ - dev->changed = 1; - SCpnt->result = 0; // This is no longer considered an error - // gag this error, VFS will log it anyway /axboe - // printk(KERN_INFO "Disc change detected.\n"); - break; - }; - default: // Fall through for non-removable media - printk("SCSI error: host %d id %d lun %d return code = %x\n", - dev->host->host_no, - dev->id, - dev->lun, - SCpnt->result); - printk("\tSense class %x, sense error %x, extended sense %x\n", - sense_class(SCpnt->sense_buffer[0]), - sense_error(SCpnt->sense_buffer[0]), - SCpnt->sense_buffer[2] & 0xf); - - }; - result = SCpnt->result; - - SDpnt = SCpnt->device; - scsi_put_command(SCpnt); - SCpnt = NULL; - - // printk(" LEAVING cpqfcTS_TargetDeviceReset() - return SUCCESS \n"); - return SUCCESS; -} - -#else -int cpqfcTS_TargetDeviceReset( Scsi_Device *ScsiDev, - unsigned int reset_flags) -{ - return -ENOTSUPP; -} - -#endif /* SUPPORT_RESET */ - -int cpqfcTS_eh_device_reset(Scsi_Cmnd *Cmnd) -{ - int retval; - Scsi_Device *SDpnt = Cmnd->device; - // printk(" ENTERING cpqfcTS_eh_device_reset() \n"); - spin_unlock_irq(Cmnd->device->host->host_lock); - retval = cpqfcTS_TargetDeviceReset( SDpnt, 0); - spin_lock_irq(Cmnd->device->host->host_lock); - return retval; -} - - -int cpqfcTS_reset(Scsi_Cmnd *Cmnd, unsigned int reset_flags) -{ - - ENTER("cpqfcTS_reset"); - - LEAVE("cpqfcTS_reset"); - return SCSI_RESET_ERROR; /* Bus Reset Not supported */ -} - -/* This function determines the bios parameters for a given - harddisk. These tend to be numbers that are made up by the - host adapter. Parameters: - size, device number, list (heads, sectors,cylinders). - (from hosts.h) -*/ - -int cpqfcTS_biosparam(struct scsi_device *sdev, struct block_device *n, - sector_t capacity, int ip[]) -{ - int size = capacity; - - ENTER("cpqfcTS_biosparam"); - ip[0] = 64; - ip[1] = 32; - ip[2] = size >> 11; - - if( ip[2] > 1024 ) - { - ip[0] = 255; - ip[1] = 63; - ip[2] = size / (ip[0] * ip[1]); - } - - LEAVE("cpqfcTS_biosparam"); - return 0; -} - - - -irqreturn_t cpqfcTS_intr_handler( int irq, - void *dev_id, - struct pt_regs *regs) -{ - - unsigned long flags, InfLoopBrk=0; - struct Scsi_Host *HostAdapter = dev_id; - CPQFCHBA *cpqfcHBA = (CPQFCHBA *)HostAdapter->hostdata; - int MoreMessages = 1; // assume we have something to do - UCHAR IntPending; - int handled = 0; - - ENTER("intr_handler"); - spin_lock_irqsave( HostAdapter->host_lock, flags); - // is this our INT? - IntPending = readb( cpqfcHBA->fcChip.Registers.INTPEND.address); - - // broken boards can generate messages forever, so - // prevent the infinite loop -#define INFINITE_IMQ_BREAK 10000 - if( IntPending ) - { - handled = 1; - // mask our HBA interrupts until we handle it... - writeb( 0, cpqfcHBA->fcChip.Registers.INTEN.address); - - if( IntPending & 0x4) // "INT" - Tach wrote to IMQ - { - while( (++InfLoopBrk < INFINITE_IMQ_BREAK) && (MoreMessages ==1) ) - { - MoreMessages = CpqTsProcessIMQEntry( HostAdapter); // ret 0 when done - } - if( InfLoopBrk >= INFINITE_IMQ_BREAK ) - { - printk("WARNING: Compaq FC adapter generating excessive INTs -REPLACE\n"); - printk("or investigate alternate causes (e.g. physical FC layer)\n"); - } - - else // working normally - re-enable INTs and continue - writeb( 0x1F, cpqfcHBA->fcChip.Registers.INTEN.address); - - } // (...ProcessIMQEntry() clears INT by writing IMQ consumer) - else // indications of errors or problems... - // these usually indicate critical system hardware problems. - { - if( IntPending & 0x10 ) - printk(" cpqfcTS adapter external memory parity error detected\n"); - if( IntPending & 0x8 ) - printk(" cpqfcTS adapter PCI master address crossed 45-bit boundary\n"); - if( IntPending & 0x2 ) - printk(" cpqfcTS adapter DMA error detected\n"); - if( IntPending & 0x1 ) { - UCHAR IntStat; - printk(" cpqfcTS adapter PCI error detected\n"); - IntStat = readb( cpqfcHBA->fcChip.Registers.INTSTAT.address); - printk("cpqfc: ISR = 0x%02x\n", IntStat); - if (IntStat & 0x1) { - __u16 pcistat; - /* read the pci status register */ - pci_read_config_word(cpqfcHBA->PciDev, 0x06, &pcistat); - printk("PCI status register is 0x%04x\n", pcistat); - if (pcistat & 0x8000) printk("Parity Error Detected.\n"); - if (pcistat & 0x4000) printk("Signalled System Error\n"); - if (pcistat & 0x2000) printk("Received Master Abort\n"); - if (pcistat & 0x1000) printk("Received Target Abort\n"); - if (pcistat & 0x0800) printk("Signalled Target Abort\n"); - } - if (IntStat & 0x4) printk("(INT)\n"); - if (IntStat & 0x8) - printk("CRS: PCI master address crossed 46 bit bouandary\n"); - if (IntStat & 0x10) printk("MRE: external memory parity error.\n"); - } - } - } - spin_unlock_irqrestore( HostAdapter->host_lock, flags); - LEAVE("intr_handler"); - return IRQ_RETVAL(handled); -} - - - - -int cpqfcTSDecodeGBICtype( PTACHYON fcChip, char cErrorString[]) -{ - // Verify GBIC type (if any) and correct Tachyon Port State Machine - // (GBIC) module definition is: - // GPIO1, GPIO0, GPIO4 for MD2, MD1, MD0. The input states appear - // to be inverted -- i.e., a setting of 111 is read when there is NO - // GBIC present. The Module Def (MD) spec says 000 is "no GBIC" - // Hard code the bit states to detect Copper, - // Long wave (single mode), Short wave (multi-mode), and absent GBIC - - ULONG ulBuff; - - sprintf( cErrorString, "\nGBIC detected: "); - - ulBuff = fcChip->Registers.TYstatus.value & 0x13; - switch( ulBuff ) - { - case 0x13: // GPIO4, GPIO1, GPIO0 = 111; no GBIC! - sprintf( &cErrorString[ strlen( cErrorString)], - "NONE! "); - return FALSE; - - - case 0x11: // Copper GBIC detected - sprintf( &cErrorString[ strlen( cErrorString)], - "Copper. "); - break; - - case 0x10: // Long-wave (single mode) GBIC detected - sprintf( &cErrorString[ strlen( cErrorString)], - "Long-wave. "); - break; - case 0x1: // Short-wave (multi mode) GBIC detected - sprintf( &cErrorString[ strlen( cErrorString)], - "Short-wave. "); - break; - default: // unknown GBIC - presumably it will work (?) - sprintf( &cErrorString[ strlen( cErrorString)], - "Unknown. "); - - break; - } // end switch GBIC detection - - return TRUE; -} - - - - - - -int cpqfcTSGetLPSM( PTACHYON fcChip, char cErrorString[]) -{ - // Tachyon's Frame Manager LPSM in LinkDown state? - // (For non-loop port, check PSM instead.) - // return string with state and FALSE is Link Down - - int LinkUp; - - if( fcChip->Registers.FMstatus.value & 0x80 ) - LinkUp = FALSE; - else - LinkUp = TRUE; - - sprintf( &cErrorString[ strlen( cErrorString)], - " LPSM %Xh ", - (fcChip->Registers.FMstatus.value >>4) & 0xf ); - - - switch( fcChip->Registers.FMstatus.value & 0xF0) - { - // bits set in LPSM - case 0x10: - sprintf( &cErrorString[ strlen( cErrorString)], "ARB"); - break; - case 0x20: - sprintf( &cErrorString[ strlen( cErrorString)], "ARBwon"); - break; - case 0x30: - sprintf( &cErrorString[ strlen( cErrorString)], "OPEN"); - break; - case 0x40: - sprintf( &cErrorString[ strlen( cErrorString)], "OPENed"); - break; - case 0x50: - sprintf( &cErrorString[ strlen( cErrorString)], "XmitCLS"); - break; - case 0x60: - sprintf( &cErrorString[ strlen( cErrorString)], "RxCLS"); - break; - case 0x70: - sprintf( &cErrorString[ strlen( cErrorString)], "Xfer"); - break; - case 0x80: - sprintf( &cErrorString[ strlen( cErrorString)], "Init"); - break; - case 0x90: - sprintf( &cErrorString[ strlen( cErrorString)], "O-IInitFin"); - break; - case 0xa0: - sprintf( &cErrorString[ strlen( cErrorString)], "O-IProtocol"); - break; - case 0xb0: - sprintf( &cErrorString[ strlen( cErrorString)], "O-ILipRcvd"); - break; - case 0xc0: - sprintf( &cErrorString[ strlen( cErrorString)], "HostControl"); - break; - case 0xd0: - sprintf( &cErrorString[ strlen( cErrorString)], "LoopFail"); - break; - case 0xe0: - sprintf( &cErrorString[ strlen( cErrorString)], "Offline"); - break; - case 0xf0: - sprintf( &cErrorString[ strlen( cErrorString)], "OldPort"); - break; - case 0: - default: - sprintf( &cErrorString[ strlen( cErrorString)], "Monitor"); - break; - - } - - return LinkUp; -} - - - - -#include "linux/slab.h" - -// Dynamic memory allocation alignment routines -// HP's Tachyon Fibre Channel Controller chips require -// certain memory queues and register pointers to be aligned -// on various boundaries, usually the size of the Queue in question. -// Alignment might be on 2, 4, 8, ... or even 512 byte boundaries. -// Since most O/Ss don't allow this (usually only Cache aligned - -// 32-byte boundary), these routines provide generic alignment (after -// O/S allocation) at any boundary, and store the original allocated -// pointer for deletion (O/S free function). Typically, we expect -// these functions to only be called at HBA initialization and -// removal time (load and unload times) -// ALGORITHM notes: -// Memory allocation varies by compiler and platform. In the worst case, -// we are only assured BYTE alignment, but in the best case, we can -// request allocation on any desired boundary. Our strategy: pad the -// allocation request size (i.e. waste memory) so that we are assured -// of passing desired boundary near beginning of contiguous space, then -// mask out lower address bits. -// We define the following algorithm: -// allocBoundary - compiler/platform specific address alignment -// in number of bytes (default is single byte; i.e. 1) -// n_alloc - number of bytes application wants @ aligned address -// ab - alignment boundary, in bytes (e.g. 4, 32, ...) -// t_alloc - total allocation needed to ensure desired boundary -// mask - to clear least significant address bits for boundary -// Compute: -// t_alloc = n_alloc + (ab - allocBoundary) -// allocate t_alloc bytes @ alloc_address -// mask = NOT (ab - 1) -// (e.g. if ab=32 _0001 1111 -> _1110 0000 -// aligned_address = alloc_address & mask -// set n_alloc bytes to 0 -// return aligned_address (NULL if failed) -// -// If u32_AlignedAddress is non-zero, then search for BaseAddress (stored -// from previous allocation). If found, invoke call to FREE the memory. -// Return NULL if BaseAddress not found - -// we need about 8 allocations per HBA. Figuring at most 10 HBAs per server -// size the dynamic_mem array at 80. - -void* fcMemManager( struct pci_dev *pdev, ALIGNED_MEM *dynamic_mem, - ULONG n_alloc, ULONG ab, ULONG u32_AlignedAddress, - dma_addr_t *dma_handle) -{ - USHORT allocBoundary=1; // compiler specific - worst case 1 - // best case - replace malloc() call - // with function that allocates exactly - // at desired boundary - - unsigned long ulAddress; - ULONG t_alloc, i; - void *alloc_address = 0; // def. error code / address not found - LONG mask; // must be 32-bits wide! - - ENTER("fcMemManager"); - if( u32_AlignedAddress ) // are we freeing existing memory? - { -// printk(" freeing AlignedAddress %Xh\n", u32_AlignedAddress); - for( i=0; i<DYNAMIC_ALLOCATIONS; i++) // look for the base address - { -// printk("dynamic_mem[%u].AlignedAddress %lX\n", i, dynamic_mem[i].AlignedAddress); - if( dynamic_mem[i].AlignedAddress == u32_AlignedAddress ) - { - alloc_address = dynamic_mem[i].BaseAllocated; // 'success' status - pci_free_consistent(pdev,dynamic_mem[i].size, - alloc_address, - dynamic_mem[i].dma_handle); - dynamic_mem[i].BaseAllocated = 0; // clear for next use - dynamic_mem[i].AlignedAddress = 0; - dynamic_mem[i].size = 0; - break; // quit for loop; done - } - } - } - else if( n_alloc ) // want new memory? - { - dma_addr_t handle; - t_alloc = n_alloc + (ab - allocBoundary); // pad bytes for alignment -// printk("pci_alloc_consistent() for Tach alignment: %ld bytes\n", t_alloc); - -// (would like to) allow thread block to free pages - alloc_address = // total bytes (NumberOfBytes) - pci_alloc_consistent(pdev, t_alloc, &handle); - - // now mask off least sig. bits of address - if( alloc_address ) // (only if non-NULL) - { - // find place to store ptr, so we - // can free it later... - - mask = (LONG)(ab - 1); // mask all low-order bits - mask = ~mask; // invert bits - for( i=0; i<DYNAMIC_ALLOCATIONS; i++) // look for free slot - { - if( dynamic_mem[i].BaseAllocated == 0) // take 1st available - { - dynamic_mem[i].BaseAllocated = alloc_address;// address from O/S - dynamic_mem[i].dma_handle = handle; - if (dma_handle != NULL) - { -// printk("handle = %p, ab=%d, boundary = %d, mask=0x%08x\n", -// handle, ab, allocBoundary, mask); - *dma_handle = (dma_addr_t) - ((((ULONG)handle) + (ab - allocBoundary)) & mask); - } - dynamic_mem[i].size = t_alloc; - break; - } - } - ulAddress = (unsigned long)alloc_address; - - ulAddress += (ab - allocBoundary); // add the alignment bytes- - // then truncate address... - alloc_address = (void*)(ulAddress & mask); - - dynamic_mem[i].AlignedAddress = - (ULONG)(ulAddress & mask); // 32bit Tach address - memset( alloc_address, 0, n_alloc ); // clear new memory - } - else // O/S dynamic mem alloc failed! - alloc_address = 0; // (for debugging breakpt) - - } - - LEAVE("fcMemManager"); - return alloc_address; // good (or NULL) address -} - - -static Scsi_Host_Template driver_template = { - .detect = cpqfcTS_detect, - .release = cpqfcTS_release, - .info = cpqfcTS_info, - .proc_info = cpqfcTS_proc_info, - .ioctl = cpqfcTS_ioctl, - .queuecommand = cpqfcTS_queuecommand, - .eh_device_reset_handler = cpqfcTS_eh_device_reset, - .eh_abort_handler = cpqfcTS_eh_abort, - .bios_param = cpqfcTS_biosparam, - .can_queue = CPQFCTS_REQ_QUEUE_LEN, - .this_id = -1, - .sg_tablesize = SG_ALL, - .cmd_per_lun = CPQFCTS_CMD_PER_LUN, - .use_clustering = ENABLE_CLUSTERING, -}; -#include "scsi_module.c" - |
