URL https://opencores.org/ocsvn/or1k/or1k/trunk
Subversion Repositories or1k

[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [scsi/] [qla1280.c] - Blame information for rev 1765

Details | Compare with Previous | View Log

/******************************************************************************
*                  QLOGIC LINUX SOFTWARE
*
* QLogic  QLA1280 (Ultra2)  and  QLA12160 (Ultra3) SCSI driver
* Copyright (C) 2000 Qlogic Corporation (www.qlogic.com)
* Copyright (C) 2001-2003 Jes Sorensen, Wild Open Source Inc.
*
* 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.
*
******************************************************************************/
#define QLA1280_VERSION      "3.23.37"
/*****************************************************************************
    Revision History:
    Rev  3.23.37 October 1, 2003, Jes Sorensen
        - Make MMIO depend on CONFIG_X86_VISWS instead of yet another
          random CONFIG option
        - Clean up locking in probe path
    Rev  3.23.36 October 1, 2003, Christoph Hellwig
        - queuecommand only ever receives new commands - clear flags
        - Reintegrate lost fixes from Linux 2.5
    Rev  3.23.35 August 14, 2003, Jes Sorensen
        - Build against 2.6
    Rev  3.23.34 July 23, 2003, Jes Sorensen
        - Remove pointless TRUE/FALSE macros
        - Clean up vchan handling
    Rev  3.23.33 July 3, 2003, Jes Sorensen
        - Don't define register access macros before define determining MMIO.
          This just happend to work out on ia64 but not elsewhere.
        - Don't try and read from the card while it is in reset as
          it won't respond and causes an MCA
    Rev  3.23.32 June 23, 2003, Jes Sorensen
        - Basic support for boot time arguments
    Rev  3.23.31 June 8, 2003, Jes Sorensen
        - Reduce boot time messages
    Rev  3.23.30 June 6, 2003, Jes Sorensen
        - Do not enable sync/wide/ppr before it has been determined
          that the target device actually supports it
        - Enable DMA arbitration for multi channel controllers
    Rev  3.23.29 June 3, 2003, Jes Sorensen
        - Port to 2.5.69
    Rev  3.23.28 June 3, 2003, Jes Sorensen
        - Eliminate duplicate marker commands on bus resets
        - Handle outstanding commands appropriately on bus/device resets
    Rev  3.23.27 May 28, 2003, Jes Sorensen
        - Remove bogus input queue code, let the Linux SCSI layer do the work
        - Clean up NVRAM handling, only read it once from the card
        - Add a number of missing default nvram parameters
    Rev  3.23.26 Beta May 28, 2003, Jes Sorensen
        - Use completion queue for mailbox commands instead of busy wait
    Rev  3.23.25 Beta May 27, 2003, James Bottomley
        - Migrate to use new error handling code
    Rev  3.23.24 Beta May 21, 2003, James Bottomley
        - Big endian support
        - Cleanup data direction code
    Rev  3.23.23 Beta May 12, 2003, Jes Sorensen
        - Switch to using MMIO instead of PIO
    Rev  3.23.22 Beta April 15, 2003, Jes Sorensen
        - Fix PCI parity problem with 12160 during reset.
    Rev  3.23.21 Beta April 14, 2003, Jes Sorensen
        - Use pci_map_page()/pci_unmap_page() instead of map_single version.
    Rev  3.23.20 Beta April 9, 2003, Jes Sorensen
        - Remove < 2.4.x support
        - Introduce HOST_LOCK to make the spin lock changes portable.
        - Remove a bunch of idiotic and unnecessary typedef's
        - Kill all leftovers of target-mode support which never worked anyway
    Rev  3.23.19 Beta April 11, 2002, Linus Torvalds
        - Do qla1280_pci_config() before calling request_irq() and
          request_region()
        - Use pci_dma_hi32() to handle upper word of DMA addresses instead
          of large shifts
        - Hand correct arguments to free_irq() in case of failure
    Rev  3.23.18 Beta April 11, 2002, Jes Sorensen
        - Run source through Lindent and clean up the output
    Rev  3.23.17 Beta April 11, 2002, Jes Sorensen
        - Update SCSI firmware to qla1280 v8.15.00 and qla12160 v10.04.32
    Rev  3.23.16 Beta March 19, 2002, Jes Sorensen
        - Rely on mailbox commands generating interrupts - do not
          run qla1280_isr() from ql1280_mailbox_command()
        - Remove device_reg_t
        - Integrate ql12160_set_target_parameters() with 1280 version
        - Make qla1280_setup() non static
        - Do not call qla1280_check_for_dead_scsi_bus() on every I/O request
          sent to the card - this command pauses the firmare!!!
    Rev  3.23.15 Beta March 19, 2002, Jes Sorensen
        - Clean up qla1280.h - remove obsolete QL_DEBUG_LEVEL_x definitions
        - Remove a pile of pointless and confusing (srb_t **) and
          (scsi_lu_t *) typecasts
        - Explicit mark that we do not use the new error handling (for now)
        - Remove scsi_qla_host_t and use 'struct' instead
        - Remove in_abort, watchdog_enabled, dpc, dpc_sched, bios_enabled,
          pci_64bit_slot flags which weren't used for anything anyway
        - Grab host->host_lock while calling qla1280_isr() from abort()
        - Use spin_lock()/spin_unlock() in qla1280_intr_handler() - we
          do not need to save/restore flags in the interrupt handler
        - Enable interrupts early (before any mailbox access) in preparation
          for cleaning up the mailbox handling
    Rev  3.23.14 Beta March 14, 2002, Jes Sorensen
        - Further cleanups. Remove all trace of QL_DEBUG_LEVEL_x and replace
          it with proper use of dprintk().
        - Make qla1280_print_scsi_cmd() and qla1280_dump_buffer() both take
          a debug level argument to determine if data is to be printed
        - Add KERN_* info to printk()
    Rev  3.23.13 Beta March 14, 2002, Jes Sorensen
        - Significant cosmetic cleanups
        - Change debug code to use dprintk() and remove #if mess
    Rev  3.23.12 Beta March 13, 2002, Jes Sorensen
        - More cosmetic cleanups, fix places treating return as function
        - use cpu_relax() in qla1280_debounce_register()
    Rev  3.23.11 Beta March 13, 2002, Jes Sorensen
        - Make it compile under 2.5.5
    Rev  3.23.10 Beta October 1, 2001, Jes Sorensen
        - Do no typecast short * to long * in QL1280BoardTbl, this
          broke miserably on big endian boxes
    Rev  3.23.9 Beta September 30, 2001, Jes Sorensen
        - Remove pre 2.2 hack for checking for reentrance in interrupt handler
        - Make data types used to receive from SCSI_{BUS,TCN,LUN}_32
          unsigned int to match the types from struct scsi_cmnd
    Rev  3.23.8 Beta September 29, 2001, Jes Sorensen
        - Remove bogus timer_t typedef from qla1280.h
        - Remove obsolete pre 2.2 PCI setup code, use proper #define's
          for PCI_ values, call pci_set_master()
        - Fix memleak of qla1280_buffer on module unload
        - Only compile module parsing code #ifdef MODULE - should be
          changed to use individual MODULE_PARM's later
        - Remove dummy_buffer that was never modified nor printed
        - ENTER()/LEAVE() are noops unless QL_DEBUG_LEVEL_3, hence remove
          #ifdef QL_DEBUG_LEVEL_3/#endif around ENTER()/LEAVE() calls
        - Remove \r from print statements, this is Linux, not DOS
        - Remove obsolete QLA1280_{SCSILU,INTR,RING}_{LOCK,UNLOCK}
          dummy macros
        - Remove C++ compile hack in header file as Linux driver are not
          supposed to be compiled as C++
        - Kill MS_64BITS macro as it makes the code more readable
        - Remove unnecessary flags.in_interrupts bit
    Rev  3.23.7 Beta August 20, 2001, Jes Sorensen
        - Dont' check for set flags on q->q_flag one by one in qla1280_next()
        - Check whether the interrupt was generated by the QLA1280 before
          doing any processing
        - qla1280_status_entry(): Only zero out part of sense_buffer that
          is not being copied into
        - Remove more superflouous typecasts
        - qla1280_32bit_start_scsi() replace home-brew memcpy() with memcpy()
    Rev  3.23.6 Beta August 20, 2001, Tony Luck, Intel
        - Don't walk the entire list in qla1280_putq_t() just to directly
          grab the pointer to the last element afterwards
    Rev  3.23.5 Beta August 9, 2001, Jes Sorensen
        - Don't use SA_INTERRUPT, it's use is deprecated for this kinda driver
    Rev  3.23.4 Beta August 8, 2001, Jes Sorensen
        - Set dev->max_sectors to 1024
    Rev  3.23.3 Beta August 6, 2001, Jes Sorensen
        - Provide compat macros for pci_enable_device(), pci_find_subsys()
          and scsi_set_pci_device()
        - Call scsi_set_pci_device() for all devices
        - Reduce size of kernel version dependent device probe code
        - Move duplicate probe/init code to separate function
        - Handle error if qla1280_mem_alloc() fails
        - Kill OFFSET() macro and use Linux's PCI definitions instead
        - Kill private structure defining PCI config space (struct config_reg)
        - Only allocate I/O port region if not in MMIO mode
        - Remove duplicate (unused) sanity check of sife of srb_t
    Rev  3.23.2 Beta August 6, 2001, Jes Sorensen
        - Change home-brew memset() implementations to use memset()
        - Remove all references to COMTRACE() - accessing a PC's COM2 serial
          port directly is not legal under Linux.
    Rev  3.23.1 Beta April 24, 2001, Jes Sorensen
        - Remove pre 2.2 kernel support
        - clean up 64 bit DMA setting to use 2.4 API (provide backwards compat)
        - Fix MMIO access to use readl/writel instead of directly
          dereferencing pointers
        - Nuke MSDOS debugging code
        - Change true/false data types to int from uint8_t
        - Use int for counters instead of uint8_t etc.
        - Clean up size & byte order conversion macro usage
    Rev  3.23 Beta January 11, 2001 BN Qlogic
        - Added check of device_id when handling non
          QLA12160s during detect().
    Rev  3.22 Beta January 5, 2001 BN Qlogic
        - Changed queue_task() to schedule_task()
          for kernels 2.4.0 and higher.
          Note: 2.4.0-testxx kernels released prior to
                the actual 2.4.0 kernel release on January 2001
                will get compile/link errors with schedule_task().
                Please update your kernel to released 2.4.0 level,
                or comment lines in this file flagged with  3.22
                to resolve compile/link error of schedule_task().
        - Added -DCONFIG_SMP in addition to -D__SMP__
          in Makefile for 2.4.0 builds of driver as module.
    Rev  3.21 Beta January 4, 2001 BN Qlogic
        - Changed criteria of 64/32 Bit mode of HBA
          operation according to BITS_PER_LONG rather
          than HBA's NVRAM setting of >4Gig memory bit;
          so that the HBA auto-configures without the need
          to setup each system individually.
    Rev  3.20 Beta December 5, 2000 BN Qlogic
        - Added priority handling to IA-64  onboard SCSI
          ISP12160 chip for kernels greater than 2.3.18.
        - Added irqrestore for qla1280_intr_handler.
        - Enabled /proc/scsi/qla1280 interface.
        - Clear /proc/scsi/qla1280 counters in detect().
    Rev  3.19 Beta October 13, 2000 BN Qlogic
        - Declare driver_template for new kernel
          (2.4.0 and greater) scsi initialization scheme.
        - Update /proc/scsi entry for 2.3.18 kernels and
          above as qla1280
    Rev  3.18 Beta October 10, 2000 BN Qlogic
        - Changed scan order of adapters to map
          the QLA12160 followed by the QLA1280.
    Rev  3.17 Beta September 18, 2000 BN Qlogic
        - Removed warnings for 32 bit 2.4.x compiles
        - Corrected declared size for request and response
          DMA addresses that are kept in each ha
    Rev. 3.16 Beta  August 25, 2000   BN  Qlogic
        - Corrected 64 bit addressing issue on IA-64
          where the upper 32 bits were not properly
          passed to the RISC engine.
    Rev. 3.15 Beta  August 22, 2000   BN  Qlogic
        - Modified qla1280_setup_chip to properly load
          ISP firmware for greater that 4 Gig memory on IA-64
    Rev. 3.14 Beta  August 16, 2000   BN  Qlogic
        - Added setting of dma_mask to full 64 bit
          if flags.enable_64bit_addressing is set in NVRAM
    Rev. 3.13 Beta  August 16, 2000   BN  Qlogic
        - Use new PCI DMA mapping APIs for 2.4.x kernel
    Rev. 3.12       July 18, 2000    Redhat & BN Qlogic
        - Added check of pci_enable_device to detect() for 2.3.x
        - Use pci_resource_start() instead of
          pdev->resource[0].start in detect() for 2.3.x
        - Updated driver version
    Rev. 3.11       July 14, 2000    BN  Qlogic
        - Updated SCSI Firmware to following versions:
          qla1x80:   8.13.08
          qla1x160:  10.04.08
        - Updated driver version to 3.11
    Rev. 3.10    June 23, 2000   BN Qlogic
        - Added filtering of AMI SubSys Vendor ID devices
    Rev. 3.9
        - DEBUG_QLA1280 undefined and  new version  BN Qlogic
    Rev. 3.08b      May 9, 2000    MD Dell
        - Added logic to check against AMI subsystem vendor ID
        Rev. 3.08       May 4, 2000    DG  Qlogic
        - Added logic to check for PCI subsystem ID.
        Rev. 3.07       Apr 24, 2000    DG & BN  Qlogic
           - Updated SCSI Firmware to following versions:
             qla12160:   10.01.19
                 qla1280:     8.09.00
        Rev. 3.06       Apr 12, 2000    DG & BN  Qlogic
           - Internal revision; not released
    Rev. 3.05       Mar 28, 2000    DG & BN  Qlogic
       - Edit correction for virt_to_bus and PROC.
    Rev. 3.04       Mar 28, 2000    DG & BN  Qlogic
       - Merge changes from ia64 port.
    Rev. 3.03       Mar 28, 2000    BN  Qlogic
       - Increase version to reflect new code drop with compile fix
         of issue with inclusion of linux/spinlock for 2.3 kernels
    Rev. 3.02       Mar 15, 2000    BN  Qlogic
       - Merge qla1280_proc_info from 2.10 code base
    Rev. 3.01       Feb 10, 2000    BN  Qlogic
       - Corrected code to compile on a 2.2.x kernel.
    Rev. 3.00       Jan 17, 2000    DG  Qlogic
           - Added 64-bit support.
    Rev. 2.07       Nov 9, 1999     DG  Qlogic
           - Added new routine to set target parameters for ISP12160.
    Rev. 2.06       Sept 10, 1999     DG  Qlogic
       - Added support for ISP12160 Ultra 3 chip.
    Rev. 2.03       August 3, 1999    Fred Lewis, Intel DuPont
        - Modified code to remove errors generated when compiling with
          Cygnus IA64 Compiler.
        - Changed conversion of pointers to unsigned longs instead of integers.
        - Changed type of I/O port variables from uint32_t to unsigned long.
        - Modified OFFSET macro to work with 64-bit as well as 32-bit.
        - Changed sprintf and printk format specifiers for pointers to %p.
        - Changed some int to long type casts where needed in sprintf & printk.
        - Added l modifiers to sprintf and printk format specifiers for longs.
        - Removed unused local variables.
    Rev. 1.20       June 8, 1999      DG,  Qlogic
         Changes to support RedHat release 6.0 (kernel 2.2.5).
       - Added SCSI exclusive access lock (io_request_lock) when accessing
         the adapter.
       - Added changes for the new LINUX interface template. Some new error
         handling routines have been added to the template, but for now we
         will use the old ones.
    -   Initial Beta Release.
*****************************************************************************/
 
 
#include <linux/config.h>
#include <linux/module.h>
 
#include <linux/version.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/sched.h>
#include <linux/pci.h>
#include <linux/proc_fs.h>
#include <linux/stat.h>
#include <linux/slab.h>
#include <linux/pci_ids.h>
#include <linux/interrupt.h>
#include <linux/init.h>
 
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/byteorder.h>
#include <asm/processor.h>
#include <asm/types.h>
#include <asm/system.h>
 
#if LINUX_VERSION_CODE >= 0x020545
#include <scsi/scsi_host.h>
#include "scsi.h"
#else
#include <linux/blk.h>
#include "scsi.h"
#include "hosts.h"
#include "sd.h"
#endif
 
#if LINUX_VERSION_CODE < 0x020407
#error "Kernels older than 2.4.7 are no longer supported"
#endif
 
 
/*
 * Compile time Options:
 *            0 - Disable and 1 - Enable
 */
#define  QL1280_LUN_SUPPORT     0
#define  WATCHDOGTIMER          0
 
#define  DEBUG_QLA1280_INTR     0
#define  DEBUG_PRINT_NVRAM      0
#define  DEBUG_QLA1280          0
 
/*
 * The SGI VISWS is broken and doesn't support MMIO ;-(
 */
#ifdef CONFIG_X86_VISWS
#define MEMORY_MAPPED_IO        0
#else
#define MEMORY_MAPPED_IO        1
#endif
 
#define UNIQUE_FW_NAME
#include "qla1280.h"
#include "ql12160_fw.h"         /* ISP RISC codes */
#include "ql1280_fw.h"
 
 
/*
 * Missing PCI ID's
 */
#ifndef PCI_DEVICE_ID_QLOGIC_ISP1080
#define PCI_DEVICE_ID_QLOGIC_ISP1080    0x1080
#endif
#ifndef PCI_DEVICE_ID_QLOGIC_ISP1240
#define PCI_DEVICE_ID_QLOGIC_ISP1240    0x1240
#endif
#ifndef PCI_DEVICE_ID_QLOGIC_ISP1280
#define PCI_DEVICE_ID_QLOGIC_ISP1280    0x1280
#endif
#ifndef PCI_DEVICE_ID_QLOGIC_ISP10160
#define PCI_DEVICE_ID_QLOGIC_ISP10160   0x1016
#endif
#ifndef PCI_DEVICE_ID_QLOGIC_ISP12160
#define PCI_DEVICE_ID_QLOGIC_ISP12160   0x1216
#endif
 
#ifndef PCI_VENDOR_ID_AMI
#define PCI_VENDOR_ID_AMI               0x101e
#endif
 
#ifndef BITS_PER_LONG
#error "BITS_PER_LONG not defined!"
#endif
#if (BITS_PER_LONG == 64) || defined CONFIG_HIGHMEM
#define QLA_64BIT_PTR   1
#endif
 
#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
#include <asm/sn/pci/pciio.h>
/* Ugly hack needed for the virtual channel fix on SN2 */
extern int snia_pcibr_rrb_alloc(struct pci_dev *pci_dev,
                                int *count_vchan0, int *count_vchan1);
#endif
 
#ifdef QLA_64BIT_PTR
#define pci_dma_hi32(a)                 ((a >> 16) >> 16)
#else
#define pci_dma_hi32(a)                 0
#endif
#define pci_dma_lo32(a)                 (a & 0xffffffff)
 
#define NVRAM_DELAY()                   udelay(500)     /* 2 microseconds */
 
#if LINUX_VERSION_CODE < 0x020417
/* Compat already available in 2.4.23 */
#define irqreturn_t                     void
#define IRQ_RETVAL(foo)
#endif
#if LINUX_VERSION_CODE < 0x020500
#define HOST_LOCK                       &io_request_lock
#define MSG_ORDERED_TAG                 1
static inline void
scsi_adjust_queue_depth(Scsi_Device *device, int tag, int depth)
{
        if (tag) {
                device->tagged_queue = tag;
                device->current_tag = 0;
        }
        device->queue_depth = depth;
}
#else
#define HOST_LOCK                       ha->host->host_lock
#endif
#if LINUX_VERSION_CODE < 0x020600
#define DEV_SIMPLE_TAGS(device)         device->tagged_queue
#else
#define DEV_SIMPLE_TAGS(device)         device->simple_tags
#endif
#if defined(__ia64__) && !defined(ia64_platform_is)
#define ia64_platform_is(foo)           (!strcmp(x, platform_name))
#endif
 
/*
 *  QLogic Driver Support Function Prototypes.
 */
static void qla1280_done(struct scsi_qla_host *, struct srb **, struct srb **);
static void qla1280_done_q_put(struct srb *, struct srb **, struct srb **);
static int qla1280_slave_configure(Scsi_Device *);
#if LINUX_VERSION_CODE < 0x020545
static void qla1280_select_queue_depth(struct Scsi_Host *, Scsi_Device *);
static void qla1280_get_target_options(struct scsi_cmnd *, struct scsi_qla_host *);
#endif
 
static int qla1280_return_status(struct response * sts, Scsi_Cmnd * cp);
static void qla1280_mem_free(struct scsi_qla_host *ha);
static int qla1280_get_token(char *);
static int qla1280_setup(char *s) __init;
static inline void qla1280_enable_intrs(struct scsi_qla_host *);
static inline void qla1280_disable_intrs(struct scsi_qla_host *);
 
/*
 *  QLogic ISP1280 Hardware Support Function Prototypes.
 */
static int qla1280_initialize_adapter(struct scsi_qla_host *ha);
static int qla1280_isp_firmware(struct scsi_qla_host *);
static int qla1280_pci_config(struct scsi_qla_host *);
static int qla1280_chip_diag(struct scsi_qla_host *);
static int qla1280_setup_chip(struct scsi_qla_host *);
static int qla1280_init_rings(struct scsi_qla_host *);
static int qla1280_nvram_config(struct scsi_qla_host *);
static int qla1280_mailbox_command(struct scsi_qla_host *,
                                   uint8_t, uint16_t *);
static int qla1280_bus_reset(struct scsi_qla_host *, int);
static int qla1280_device_reset(struct scsi_qla_host *, int, int);
static int qla1280_abort_device(struct scsi_qla_host *, int, int, int);
static int qla1280_abort_command(struct scsi_qla_host *, struct srb *, int);
static int qla1280_abort_isp(struct scsi_qla_host *);
static int qla1280_64bit_start_scsi(struct scsi_qla_host *, struct srb *);
static int qla1280_32bit_start_scsi(struct scsi_qla_host *, struct srb *);
static void qla1280_nv_write(struct scsi_qla_host *, uint16_t);
static void qla1280_poll(struct scsi_qla_host *);
static void qla1280_reset_adapter(struct scsi_qla_host *);
static void qla1280_marker(struct scsi_qla_host *, int, int, int, u8);
static void qla1280_isp_cmd(struct scsi_qla_host *);
irqreturn_t qla1280_intr_handler(int, void *, struct pt_regs *);
static void qla1280_isr(struct scsi_qla_host *, struct srb **, struct srb **);
static void qla1280_rst_aen(struct scsi_qla_host *);
static void qla1280_status_entry(struct scsi_qla_host *, struct response *,
                                 struct srb **, struct srb **);
static void qla1280_error_entry(struct scsi_qla_host *, struct response *,
                                struct srb **, struct srb **);
static uint16_t qla1280_get_nvram_word(struct scsi_qla_host *, uint32_t);
static uint16_t qla1280_nvram_request(struct scsi_qla_host *, uint32_t);
static uint16_t qla1280_debounce_register(volatile uint16_t *);
static request_t *qla1280_req_pkt(struct scsi_qla_host *);
static int qla1280_check_for_dead_scsi_bus(struct scsi_qla_host *,
                                           unsigned int);
static int qla1280_mem_alloc(struct scsi_qla_host *ha);
 
static void qla12160_get_target_parameters(struct scsi_qla_host *,
                                           Scsi_Device *);
static int qla12160_set_target_parameters(struct scsi_qla_host *, int, int);
 
 
static struct qla_driver_setup driver_setup __initdata;
 
/*
 * convert scsi data direction to request_t control flags
 */
static inline uint16_t
qla1280_data_direction(struct scsi_cmnd *cmnd)
{
        uint16_t flags = 0;
 
        switch(cmnd->sc_data_direction) {
 
        case SCSI_DATA_NONE:
                flags = 0;
                break;
 
        case SCSI_DATA_READ:
                flags = BIT_5;
                break;
 
        case SCSI_DATA_WRITE:
                flags = BIT_6;
                break;
 
        case SCSI_DATA_UNKNOWN:
        default:
                flags = BIT_5 | BIT_6;
                break;
        }
        return flags;
}
 
#if QL1280_LUN_SUPPORT
static void qla1280_enable_lun(struct scsi_qla_host *, int, int);
#endif
 
#if DEBUG_QLA1280
static void __qla1280_print_scsi_cmd(Scsi_Cmnd * cmd);
static void __qla1280_dump_buffer(char *, int);
#endif
 
 
/*
 * insmod needs to find the variable and make it point to something
 */
#ifdef MODULE
static char *qla1280;
 
/* insmod qla1280 options=verbose" */
MODULE_PARM(qla1280, "s");
#else
__setup("qla1280=", qla1280_setup);
#endif
 
MODULE_LICENSE("GPL");
 
 
/* We use the Scsi_Pointer structure that's included with each command
 * SCSI_Cmnd as a scratchpad for our SRB.
 *
 * SCp will always point to the SRB structure (defined in qla1280.h).
 * It is define as follows:
 *  - SCp.ptr  -- > pointer back to the cmd
 *  - SCp.this_residual --> used as forward pointer to next srb
 *  - SCp.buffer --> used as backward pointer to next srb
 *  - SCp.buffers_residual --> used as flags field
 *  - SCp.have_data_in --> not used
 *  - SCp.sent_command --> not used
 *  - SCp.phase --> not used
 */
 
#define CMD_SP(Cmnd)            &Cmnd->SCp
#define CMD_CDBLEN(Cmnd)        Cmnd->cmd_len
#define CMD_CDBP(Cmnd)          Cmnd->cmnd
#define CMD_SNSP(Cmnd)          Cmnd->sense_buffer
#define CMD_SNSLEN(Cmnd)        sizeof(Cmnd->sense_buffer)
#define CMD_RESULT(Cmnd)        Cmnd->result
#define CMD_HANDLE(Cmnd)        Cmnd->host_scribble
#if LINUX_VERSION_CODE < 0x020545
#define CMD_HOST(Cmnd)          Cmnd->host
#define CMD_REQUEST(Cmnd)       Cmnd->request.cmd
#define SCSI_BUS_32(Cmnd)       Cmnd->channel
#define SCSI_TCN_32(Cmnd)       Cmnd->target
#define SCSI_LUN_32(Cmnd)       Cmnd->lun
#else
#define CMD_HOST(Cmnd)          Cmnd->device->host
#define CMD_REQUEST(Cmnd)       Cmnd->request->cmd
#define SCSI_BUS_32(Cmnd)       Cmnd->device->channel
#define SCSI_TCN_32(Cmnd)       Cmnd->device->id
#define SCSI_LUN_32(Cmnd)       Cmnd->device->lun
#endif
 
/*****************************************/
/*   ISP Boards supported by this driver */
/*****************************************/
 
#define NUM_OF_ISP_DEVICES      6
 
struct qla_boards {
        unsigned char name[9];  /* Board ID String */
        unsigned long device_id;        /* Device PCI ID   */
        int numPorts;           /* Number of SCSI ports */
        unsigned short *fwcode; /* pointer to FW array         */
        unsigned short *fwlen;  /* number of words in array    */
        unsigned short *fwstart;        /* start address for F/W       */
        unsigned char *fwver;   /* Ptr to F/W version array    */
};
 
struct qla_boards ql1280_board_tbl[NUM_OF_ISP_DEVICES] = {
        /* Name ,  Board PCI Device ID,         Number of ports */
        {"QLA12160", PCI_DEVICE_ID_QLOGIC_ISP12160, 2,
         &fw12160i_code01[0], &fw12160i_length01,
         &fw12160i_addr01, &fw12160i_version_str[0]},
        {"QLA1080", PCI_DEVICE_ID_QLOGIC_ISP1080, 1,
         &fw1280ei_code01[0], &fw1280ei_length01,
         &fw1280ei_addr01, &fw1280ei_version_str[0]},
        {"QLA1240", PCI_DEVICE_ID_QLOGIC_ISP1240, 2,
         &fw1280ei_code01[0], &fw1280ei_length01,
         &fw1280ei_addr01, &fw1280ei_version_str[0]},
        {"QLA1280", PCI_DEVICE_ID_QLOGIC_ISP1280, 2,
         &fw1280ei_code01[0], &fw1280ei_length01,
         &fw1280ei_addr01, &fw1280ei_version_str[0]},
        {"QLA10160", PCI_DEVICE_ID_QLOGIC_ISP10160, 1,
         &fw12160i_code01[0], &fw12160i_length01,
         &fw12160i_addr01, &fw12160i_version_str[0]},
        {"        ", 0, 0}
};
 
static int qla1280_verbose = 1;
static struct scsi_qla_host *qla1280_hostlist;
static int qla1280_buffer_size;
static char *qla1280_buffer;
 
#if DEBUG_QLA1280
static int ql_debug_level = 1;
#define dprintk(level, format, a...)    \
        do { if (ql_debug_level >= level) printk(KERN_ERR format, ##a); } while(0)
#define qla1280_dump_buffer(level, buf, size)   \
        if (ql_debug_level >= level) __qla1280_dump_buffer(buf, size)
#define qla1280_print_scsi_cmd(level, cmd)      \
        if (ql_debug_level >= level) __qla1280_print_scsi_cmd(cmd)
#else
#define ql_debug_level                  0
#define dprintk(level, format, a...)    do{}while(0)
#define qla1280_dump_buffer(a, b, c)    do{}while(0)
#define qla1280_print_scsi_cmd(a, b)    do{}while(0)
#endif
 
#define ENTER(x)                dprintk(3, "qla1280 : Entering %s()\n", x);
#define LEAVE(x)                dprintk(3, "qla1280 : Leaving %s()\n", x);
#define ENTER_INTR(x)           dprintk(4, "qla1280 : Entering %s()\n", x);
#define LEAVE_INTR(x)           dprintk(4, "qla1280 : Leaving %s()\n", x);
 
 
/*************************************************************************
 * qla1280_proc_info
 *
 * Description:
 *   Return information to handle /proc support for the driver.
 *
 * buffer - ptrs to a page buffer
 *
 * Returns:
 *************************************************************************/
#define PROC_BUF        &qla1280_buffer[len]
 
#if LINUX_VERSION_CODE < 0x020600
static int qla1280_proc_info(char *buffer, char **start, off_t offset,
                             int length, int hostno, int inout)
#else
static int qla1280_proc_info(struct Scsi_Host *host, char *buffer,
                             char **start, off_t offset, int length, int inout)
#endif
{
        struct scsi_qla_host *ha;
        int size = 0;
        int len = 0;
        struct qla_boards *bdp;
#ifdef BOGUS_QUEUE
        struct scsi_lu *up;
        uint32_t b, t, l;
#endif
#if LINUX_VERSION_CODE >= 0x020600
        ha = (struct scsi_qla_host *)host->hostdata;
#else
        struct Scsi_Host *host;
        /* Find the host that was specified */
        for (ha = qla1280_hostlist; (ha != NULL)
                     && ha->host->host_no != hostno; ha = ha->next) ;
 
        /* if host wasn't found then exit */
        if (!ha) {
                size =  sprintf(buffer, "Can't find adapter for host "
                                "number %d\n", hostno);
                if (size > length) {
                        return size;
                } else {
                        return 0;
                }
        }
 
        host = ha->host;
#endif
 
        if (inout)
                return -ENOSYS;
 
        /*
         * if our old buffer is the right size use it otherwise
         * allocate a new one.
         */
        if (qla1280_buffer_size != PAGE_SIZE) {
                /* deallocate this buffer and get a new one */
                if (qla1280_buffer != NULL) {
                        free_page((unsigned long)qla1280_buffer);
                        qla1280_buffer_size = 0;
                }
                qla1280_buffer = (char *)get_zeroed_page(GFP_KERNEL);
        }
        if (qla1280_buffer == NULL) {
                size = sprintf(buffer, "qla1280 - kmalloc error at line %d\n",
                               __LINE__);
                return size;
        }
        /* save the size of our buffer */
        qla1280_buffer_size = PAGE_SIZE;
 
        /* 3.20 clear the buffer we use for proc display */
        memset(qla1280_buffer, 0, PAGE_SIZE);
 
        /* start building the print buffer */
        bdp = &ql1280_board_tbl[ha->devnum];
        size = sprintf(PROC_BUF,
                       "QLogic PCI to SCSI Adapter for ISP 1280/12160:\n"
                       "        Firmware version: %2d.%02d.%02d, Driver version %s\n",
                       bdp->fwver[0], bdp->fwver[1], bdp->fwver[2],
                       QLA1280_VERSION);
 
        len += size;
 
        size = sprintf(PROC_BUF, "SCSI Host Adapter Information: %s\n",
                       bdp->name);
        len += size;
        size = sprintf(PROC_BUF, "Request Queue count= 0x%x, Response "
                       "Queue count= 0x%x\n",
                       REQUEST_ENTRY_CNT, RESPONSE_ENTRY_CNT);
        len += size;
        size = sprintf(PROC_BUF, "Number of pending commands = 0x%lx\n",
                       ha->actthreads);
        len += size;
        size = sprintf(PROC_BUF, "Number of free request entries = %d\n",
                       ha->req_q_cnt);
        len += size;
        size = sprintf(PROC_BUF, "\n"); /* 1       */
        len += size;
 
        size = sprintf(PROC_BUF, "SCSI device Information:\n");
        len += size;
#ifdef BOGUS_QUEUE
        /* scan for all equipment stats */
        for (b = 0; b < MAX_BUSES; b++)
                for (t = 0; t < MAX_TARGETS; t++) {
                        for (l = 0; l < MAX_LUNS; l++) {
                                up = LU_Q(ha, b, t, l);
                                if (up == NULL)
                                        continue;
                                /* unused device/lun */
                                if (up->io_cnt == 0 || up->io_cnt < 2)
                                        continue;
                                /* total reads since boot */
                                /* total writes since boot */
                                /* total requests since boot  */
                                size = sprintf (PROC_BUF,
                                                "(%2d:%2d:%2d): Total reqs %ld,",
                                                b, t, l, up->io_cnt);
                                len += size;
                                /* current number of pending requests */
                                size =  sprintf(PROC_BUF, " Pend reqs %d,",
                                                up->q_outcnt);
                                len += size;
#if 0
                                /* avg response time */
                                size = sprintf(PROC_BUF, " Avg resp time %ld%%,",
                                               (up->resp_time / up->io_cnt) *
                                               100);
                                len += size;
 
                                /* avg active time */
                                size = sprintf(PROC_BUF,
                                               " Avg active time %ld%%\n",
                                               (up->act_time / up->io_cnt) * 100);
#else
                                size = sprintf(PROC_BUF, "\n");
#endif
                                len += size;
                        }
                        if (len >= qla1280_buffer_size)
                                break;
                }
#endif
 
        if (len >= qla1280_buffer_size) {
                printk(KERN_WARNING
                       "qla1280: Overflow buffer in qla1280_proc.c\n");
        }
 
        if (offset > len - 1) {
                free_page((unsigned long) qla1280_buffer);
                qla1280_buffer = NULL;
                qla1280_buffer_size = length = 0;
                *start = NULL;
        } else {
                *start = &qla1280_buffer[offset];       /* Start of wanted data */
                if (len - offset < length) {
                        length = len - offset;
                }
        }
        return length;
}
 
 
static int qla1280_read_nvram(struct scsi_qla_host *ha)
{
        uint16_t *wptr;
        uint8_t chksum;
        int cnt;
        struct nvram *nv;
 
        ENTER("qla1280_read_nvram");
 
        if (driver_setup.no_nvram)
                return 1;
 
        printk(KERN_INFO "scsi(%ld): Reading NVRAM\n", ha->host_no);
 
        wptr = (uint16_t *)&ha->nvram;
        nv = &ha->nvram;
        chksum = 0;
        for (cnt = 0; cnt < 3; cnt++) {
                *wptr = qla1280_get_nvram_word(ha, cnt);
                chksum += *wptr & 0xff;
                chksum += (*wptr >> 8) & 0xff;
                wptr++;
        }
 
        if (nv->id0 != 'I' || nv->id1 != 'S' ||
            nv->id2 != 'P' || nv->id3 != ' ' || nv->version < 1) {
                dprintk(2, "Invalid nvram ID or version!\n");
                chksum = 1;
        } else {
                for (; cnt < sizeof(struct nvram); cnt++) {
                        *wptr = qla1280_get_nvram_word(ha, cnt);
                        chksum += *wptr & 0xff;
                        chksum += (*wptr >> 8) & 0xff;
                        wptr++;
                }
        }
 
        dprintk(3, "qla1280_read_nvram: NVRAM Magic ID= %c %c %c %02x"
               " version %i\n", nv->id0, nv->id1, nv->id2, nv->id3,
               nv->version);
 
 
        if (chksum) {
                if (!driver_setup.no_nvram)
                        printk(KERN_WARNING "scsi(%ld): Unable to identify or "
                               "validate NVRAM checksum, using default "
                               "settings\n", ha->host_no);
                ha->nvram_valid = 0;
        } else
                ha->nvram_valid = 1;
 
        dprintk(1, "qla1280_read_nvram: Completed Reading NVRAM\n");
        LEAVE("qla1280_read_nvram");
 
        return chksum;
}
 
 
/**************************************************************************
 * qla1280_do_device_init
 *    This routine will register the device with the SCSI subsystem,
 *    initialize the host adapter structure and call the device init
 *    routines.
 *
 * Input:
 *     pdev      - pointer to struct pci_dev for adapter
 *     template  - pointer to SCSI template
 *     devnum    - the device number
 *     bdp       - pointer to struct _qlaboards
 *     num_hosts - the host number
 *
 * Returns:
 *  host - pointer to SCSI host structure
 **************************************************************************/
struct Scsi_Host *
qla1280_do_device_init(struct pci_dev *pdev, Scsi_Host_Template * template,
                       int devnum, struct qla_boards *bdp, int num_hosts)
{
        struct Scsi_Host *host;
        struct scsi_qla_host *ha;
 
        printk(KERN_INFO "qla1280: %s found on PCI bus %i, dev %i\n",
               bdp->name, pdev->bus->number, PCI_SLOT(pdev->devfn));
 
        host = scsi_register(template, sizeof(struct scsi_qla_host));
        if (!host) {
                printk(KERN_WARNING
                       "qla1280: Failed to register host, aborting.\n");
                goto error;
        }
 
#if LINUX_VERSION_CODE < 0x020545
        scsi_set_pci_device(host, pdev);
#else
        scsi_set_device(host, &pdev->dev);
#endif
        ha = (struct scsi_qla_host *)host->hostdata;
        /* Clear our data area */
        memset(ha, 0, sizeof(struct scsi_qla_host));
        /* Sanitize the information from PCI BIOS.  */
        host->irq = pdev->irq;
        ha->pci_bus = pdev->bus->number;
        ha->pci_device_fn = pdev->devfn;
        ha->pdev = pdev;
        ha->device_id = bdp->device_id;
        ha->devnum = devnum;    /* specifies microcode load address */
 
        if (qla1280_mem_alloc(ha)) {
                printk(KERN_INFO "qla1x160: Failed to get memory\n");
                goto error_scsi_unregister;
        }
 
        ha->ports = bdp->numPorts;
        /* following needed for all cases of OS versions */
        ha->host = host;
        ha->host_no = host->host_no;
 
        host->can_queue = 0xfffff;      /* unlimited  */
        host->cmd_per_lun = 1;
        host->base = (unsigned long)ha->mmpbase;
        host->max_channel = bdp->numPorts - 1;
        host->max_lun = MAX_LUNS - 1;
        host->max_id = MAX_TARGETS;
        host->max_sectors = 1024;
#if LINUX_VERSION_CODE < 0x020545
        host->select_queue_depths = qla1280_select_queue_depth;
#endif
 
        ha->instance = num_hosts;
        host->unique_id = ha->instance;
 
        if (qla1280_pci_config(ha)) {
                printk(KERN_INFO "qla1x160: Unable to configure PCI\n");
                goto error_mem_alloced;
        }
 
        /* Disable ISP interrupts. */
        qla1280_disable_intrs(ha);
 
        /* Register the IRQ with Linux (sharable) */
        if (request_irq(host->irq, qla1280_intr_handler, SA_SHIRQ,
                        "qla1280", ha)) {
                printk("qla1280 : Failed to reserve interrupt %d already "
                       "in use\n", host->irq);
                goto error_iounmap;
        }
#if !MEMORY_MAPPED_IO
        /* Register the I/O space with Linux */
        if (!request_region(host->io_port, 0xff, "qla1280")) {
                printk("qla1280: Failed to reserve i/o region 0x%04lx-0x%04lx"
                       " already in use\n",
                       host->io_port, host->io_port + 0xff);
                goto error_free_irq;
        }
#endif
 
        /* load the F/W, read paramaters, and init the H/W */
        if (qla1280_initialize_adapter(ha)) {
                printk(KERN_INFO "qla1x160: Failed to initialize adapter\n");
                goto error_release_region;
        }
 
        /* set our host ID  (need to do something about our two IDs) */
        host->this_id = ha->bus_settings[0].id;
 
        return host;
 
 error_release_region:
#if !MEMORY_MAPPED_IO
        release_region(host->io_port, 0xff);
 error_free_irq:
#endif
        free_irq(host->irq, ha);
 error_iounmap:
#if MEMORY_MAPPED_IO
        if (ha->mmpbase)
                iounmap((void *)(((unsigned long) ha->mmpbase) & PAGE_MASK));
#endif
 error_mem_alloced:
        qla1280_mem_free(ha);
 error_scsi_unregister:
        scsi_unregister(host);
 error:
        return NULL;
}
 
/**************************************************************************
 * qla1280_detect
 *    This routine will probe for Qlogic 1280 SCSI host adapters.
 *    It returns the number of host adapters of a particular
 *    type that were found.      It also initialize all data necessary for
 *    the driver.  It is passed-in the host number, so that it
 *    knows where its first entry is in the scsi_hosts[] array.
 *
 * Input:
 *     template - pointer to SCSI template
 *
 * Returns:
 *  num - number of host adapters found.
 **************************************************************************/
static int
qla1280_detect(Scsi_Host_Template * template)
{
        struct pci_dev *pdev = NULL;
        struct Scsi_Host *host;
        struct scsi_qla_host *ha, *cur_ha;
        struct qla_boards *bdp;
        uint16_t subsys_vendor, subsys_device;
        int num_hosts = 0;
        int devnum = 0;
 
        ENTER("qla1280_detect");
 
        if (sizeof(struct srb) > sizeof(Scsi_Pointer)) {
                printk(KERN_WARNING
                       "qla1280_detect: [WARNING] struct srb too big\n");
                return 0;
        }
#ifdef MODULE
        /*
         * If we are called as a module, the qla1280 pointer may not be null
         * and it would point to our bootup string, just like on the lilo
         * command line.  IF not NULL, then process this config string with
         * qla1280_setup
         *
         * Boot time Options
         * To add options at boot time add a line to your lilo.conf file like:
         * append="qla1280=verbose,max_tags:{{255,255,255,255},{255,255,255,255}}"
         * which will result in the first four devices on the first two
         * controllers being set to a tagged queue depth of 32.
         */
        if (qla1280)
                qla1280_setup(qla1280);
#endif
 
        bdp = &ql1280_board_tbl[0];
        qla1280_hostlist = NULL;
        template->proc_name = "qla1280";
 
        /* First Initialize QLA12160 on PCI Bus 1 Dev 2 */
        while ((pdev = pci_find_subsys(PCI_VENDOR_ID_QLOGIC, bdp->device_id,
                                       PCI_ANY_ID, PCI_ANY_ID, pdev))) {
 
                /* find QLA12160 device on PCI bus=1 slot=2 */
                if ((pdev->bus->number != 1) || (PCI_SLOT(pdev->devfn) != 2))
                        continue;
 
                /* Bypass all AMI SUBSYS VENDOR IDs */
                if (pdev->subsystem_vendor == PCI_VENDOR_ID_AMI) {
                        printk(KERN_INFO
                               "qla1x160: Skip AMI SubSys Vendor ID Chip\n");
                        continue;
                }
 
                if (pci_enable_device(pdev))
                        goto find_devices;
 
                host = qla1280_do_device_init(pdev, template, devnum,
                                              bdp, num_hosts);
                if (!host)
                        continue;
                ha = (struct scsi_qla_host *)host->hostdata;
 
                /* this preferred device will always be the first one found */
                cur_ha = qla1280_hostlist = ha;
                num_hosts++;
        }
 
 find_devices:
 
        pdev = NULL;
        /* Try and find each different type of adapter we support */
        for (devnum = 0; bdp->device_id != 0 && devnum < NUM_OF_ISP_DEVICES;
             devnum++, bdp++) {
                /* PCI_SUBSYSTEM_IDS supported */
                while ((pdev = pci_find_subsys(PCI_VENDOR_ID_QLOGIC,
                                               bdp->device_id, PCI_ANY_ID,
                                               PCI_ANY_ID, pdev))) {
                        if (pci_enable_device(pdev))
                                continue;
                        /* found an adapter */
                        subsys_vendor = pdev->subsystem_vendor;
                        subsys_device = pdev->subsystem_device;
 
                        /*
                         * skip QLA12160 already initialized on
                         * PCI Bus 1 Dev 2 since we already initialized
                         * and presented it
                         */
                        if ((bdp->device_id == PCI_DEVICE_ID_QLOGIC_ISP12160)&&
                            (pdev->bus->number == 1) &&
                            (PCI_SLOT(pdev->devfn) == 2))
                                continue;
 
                        /* Bypass all AMI SUBSYS VENDOR IDs */
                        if (subsys_vendor == PCI_VENDOR_ID_AMI) {
                                printk(KERN_INFO
                                       "qla1x160: Skip AMI SubSys Vendor ID Chip\n");
                                continue;
                        }
                        dprintk(1, "qla1x160: Supported Device Found VID=%x "
                               "DID=%x SSVID=%x SSDID=%x\n", pdev->vendor,
                               pdev->device, subsys_vendor, subsys_device);
 
                        host = qla1280_do_device_init(pdev, template,
                                                      devnum, bdp, num_hosts);
                        if (!host)
                                continue;
                        ha = (struct scsi_qla_host *)host->hostdata;
 
                        if (qla1280_hostlist == NULL) {
                                cur_ha = qla1280_hostlist = ha;
                        } else {
                                cur_ha = qla1280_hostlist;
                                while (cur_ha->next != NULL)
                                        cur_ha = cur_ha->next;
                                cur_ha->next = ha;
                        }
                        num_hosts++;
                }               /* end of WHILE */
        }                       /* end of FOR */
 
        LEAVE("qla1280_detect");
        return num_hosts;
}
 
/**************************************************************************
 *   qla1280_release
 *   Free the passed in Scsi_Host memory structures prior to unloading the
 *   module.
 **************************************************************************/
static int
qla1280_release(struct Scsi_Host *host)
{
        struct scsi_qla_host *ha = (struct scsi_qla_host *)host->hostdata;
 
        ENTER("qla1280_release");
 
        if (!ha->flags.online)
                return 0;
 
        /* turn-off interrupts on the card */
        WRT_REG_WORD(&ha->iobase->ictrl, 0);
 
        /* Detach interrupts */
        if (host->irq)
                free_irq(host->irq, ha);
 
#if MEMORY_MAPPED_IO
        if (ha->mmpbase)
                iounmap(ha->mmpbase);
#else
        /* release io space registers  */
        if (host->io_port)
                release_region(host->io_port, 0xff);
#endif                          /* MEMORY_MAPPED_IO */
 
        qla1280_mem_free(ha);
 
        ENTER("qla1280_release");
        return 0;
}
 
/**************************************************************************
 *   qla1280_info
 *     Return a string describing the driver.
 **************************************************************************/
static const char *
qla1280_info(struct Scsi_Host *host)
{
        static char qla1280_scsi_name_buffer[125];
        char *bp;
        struct scsi_qla_host *ha;
        struct qla_boards *bdp;
 
        bp = &qla1280_scsi_name_buffer[0];
        ha = (struct scsi_qla_host *)host->hostdata;
        bdp = &ql1280_board_tbl[ha->devnum];
        memset(bp, 0, sizeof(qla1280_scsi_name_buffer));
        sprintf (bp,
                 "QLogic %s PCI to SCSI Host Adapter: bus %d device %d irq %d\n"
                 "       Firmware version: %2d.%02d.%02d, Driver version %s",
                 &bdp->name[0], ha->pci_bus, (ha->pci_device_fn & 0xf8) >> 3,
                 host->irq, bdp->fwver[0], bdp->fwver[1], bdp->fwver[2],
                 QLA1280_VERSION);
        return bp;
}
 
/**************************************************************************
 *   qla1200_queuecommand
 *     Queue a command to the controller.
 *
 * Note:
 * The mid-level driver tries to ensures that queuecommand never gets invoked
 * concurrently with itself or the interrupt handler (although the
 * interrupt handler may call this routine as part of request-completion
 * handling).   Unfortunely, it sometimes calls the scheduler in interrupt
 * context which is a big NO! NO!.
 **************************************************************************/
static int
qla1280_queuecommand(Scsi_Cmnd * cmd, void (*fn) (Scsi_Cmnd *))
{
        struct scsi_qla_host *ha;
        struct srb *sp;
        struct Scsi_Host *host;
        int bus, target, lun;
        int status;
 
        /*ENTER("qla1280_queuecommand");
         */
        dprintk(2, "qla1280_queuecommand(): jiffies %li\n", jiffies);
 
        host = CMD_HOST(cmd);
        ha = (struct scsi_qla_host *)host->hostdata;
 
        /* send command to adapter */
        sp = (struct srb *)CMD_SP(cmd);
        sp->cmd = cmd;
        cmd->scsi_done = fn;
        sp->flags = 0;
 
        qla1280_print_scsi_cmd(5, cmd);
 
        /* Generate LU queue on bus, target, LUN */
        bus = SCSI_BUS_32(cmd);
        target = SCSI_TCN_32(cmd);
        lun = SCSI_LUN_32(cmd);
        if (ha->flags.enable_64bit_addressing)
                status = qla1280_64bit_start_scsi(ha, sp);
        else
                status = qla1280_32bit_start_scsi(ha, sp);
 
        /*LEAVE("qla1280_queuecommand"); */
        return status;
}
 
enum action {
        ABORT_COMMAND,
        ABORT_DEVICE,
        DEVICE_RESET,
        BUS_RESET,
        ADAPTER_RESET,
        FAIL
};
 
/* timer action for error action processor */
static void qla1280_error_wait_timeout(unsigned long __data)
{
        struct scsi_cmnd *cmd = (struct scsi_cmnd *)__data;
        struct srb *sp = (struct srb *)CMD_SP(cmd);
 
        complete(sp->wait);
}
 
static void qla1280_mailbox_timeout(unsigned long __data)
{
        struct scsi_qla_host *ha = (struct scsi_qla_host *)__data;
        struct device_reg *reg;
        reg = ha->iobase;
 
        ha->mailbox_out[0] = RD_REG_WORD(&reg->mailbox0);
        printk(KERN_ERR "scsi(%ld): mailbox timed out, mailbox0 %04x, "
               "ictrl %04x, istatus %04x\n", ha->host_no, ha->mailbox_out[0],
               RD_REG_WORD(&reg->ictrl), RD_REG_WORD(&reg->istatus));
        complete(ha->mailbox_wait);
}
 
/**************************************************************************
 * qla1200_error_action
 *    The function will attempt to perform a specified error action and
 *    wait for the results (or time out).
 *
 * Input:
 *      cmd = Linux SCSI command packet of the command that cause the
 *            bus reset.
 *      action = error action to take (see action_t)
 *
 * Returns:
 *      SUCCESS or FAILED
 *
 * Note:
 *      Resetting the bus always succeeds - is has to, otherwise the
 *      kernel will panic! Try a surgical technique - sending a BUS
 *      DEVICE RESET message - on the offending target before pulling
 *      the SCSI bus reset line.
 **************************************************************************/
static int
qla1280_error_action(Scsi_Cmnd * cmd, enum action action)
{
        struct scsi_qla_host *ha;
        int bus, target, lun;
        struct srb *sp;
        uint16_t data;
        unsigned char *handle;
        int result, i;
        DECLARE_COMPLETION(wait);
        struct timer_list timer;
 
        ha = (struct scsi_qla_host *)(CMD_HOST(cmd)->hostdata);
 
        dprintk(4, "error_action %i, istatus 0x%04x\n", action,
                RD_REG_WORD(&ha->iobase->istatus));
 
        dprintk(4, "host_cmd 0x%04x, ictrl 0x%04x, jiffies %li\n",
                RD_REG_WORD(&ha->iobase->host_cmd),
                RD_REG_WORD(&ha->iobase->ictrl), jiffies);
 
        ENTER("qla1280_error_action");
        if (qla1280_verbose)
                printk(KERN_INFO "scsi(%li): Resetting Cmnd=0x%p, "
                       "Handle=0x%p, action=0x%x\n",
                       ha->host_no, cmd, CMD_HANDLE(cmd), action);
 
        if (cmd == NULL) {
                printk(KERN_WARNING "(scsi?:?:?:?) Reset called with NULL "
                       "si_Cmnd pointer, failing.\n");
                LEAVE("qla1280_error_action");
                return FAILED;
        }
 
        ha = (struct scsi_qla_host *)cmd->device->host->hostdata;
        sp = (struct srb *)CMD_SP(cmd);
        handle = CMD_HANDLE(cmd);
 
        /* Check for pending interrupts. */
        data = qla1280_debounce_register(&ha->iobase->istatus);
        /*
         * The io_request_lock is held when the reset handler is called, hence
         * the interrupt handler cannot be running in parallel as it also
         * grabs the lock. /Jes
         */
        if (data & RISC_INT)
                qla1280_isr(ha, &ha->done_q_first, &ha->done_q_last);
 
        /*
         * Determine the suggested action that the mid-level driver wants
         * us to perform.
         */
        if (handle == (unsigned char *)INVALID_HANDLE || handle == NULL) {
                if(action == ABORT_COMMAND) {
                        /* we never got this command */
                        printk(KERN_INFO "qla1280: Aborting a NULL handle\n");
                        return SUCCESS; /* no action - we don't have command */
                }
        } else {
                sp->wait = &wait;
        }
 
        bus = SCSI_BUS_32(cmd);
        target = SCSI_TCN_32(cmd);
        lun = SCSI_LUN_32(cmd);
 
        /* Overloading result.  Here it means the success or fail of the
         * *issue* of the action.  When we return from the routine, it must
         * mean the actual success or fail of the action */
        result = FAILED;
        switch (action) {
        case FAIL:
                break;
 
        case ABORT_COMMAND:
                if ((sp->flags & SRB_ABORT_PENDING)) {
                        printk(KERN_WARNING
                               "scsi(): Command has a pending abort "
                               "message - ABORT_PENDING.\n");
                        /* This should technically be impossible since we
                         * now wait for abort completion */
                        break;
                }
 
                for (i = 0; i < MAX_OUTSTANDING_COMMANDS; i++) {
                        if (sp == ha->outstanding_cmds[i]) {
                                dprintk(1, "qla1280: RISC aborting command\n");
                                if (qla1280_abort_command(ha, sp, i) == 0)
                                        result = SUCCESS;
                                else {
                                        /*
                                         * Since we don't know what might
                                         * have happend to the command, it
                                         * is unsafe to remove it from the
                                         * device's queue at this point.
                                         * Wait and let the escalation
                                         * process take care of it.
                                         */
                                        printk(KERN_WARNING
                                               "scsi(%li:%i:%i:%i): Unable"
                                               " to abort command!\n",
                                               ha->host_no, bus, target, lun);
                                }
                        }
                }
                break;
 
        case ABORT_DEVICE:
                ha->flags.in_reset = 1;
                if (qla1280_verbose)
                        printk(KERN_INFO
                               "scsi(%ld:%d:%d:%d): Queueing abort device "
                               "command.\n", ha->host_no, bus, target, lun);
                if (qla1280_abort_device(ha, bus, target, lun) == 0)
                        result = SUCCESS;
                break;
 
        case DEVICE_RESET:
                if (qla1280_verbose)
                        printk(KERN_INFO
                               "scsi(%ld:%d:%d:%d): Queueing device reset "
                               "command.\n", ha->host_no, bus, target, lun);
                ha->flags.in_reset = 1;
                if (qla1280_device_reset(ha, bus, target) == 0)
                        result = SUCCESS;
                break;
 
        case BUS_RESET:
                if (qla1280_verbose)
                        printk(KERN_INFO "qla1280(%ld:%d): Issuing BUS "
                               "DEVICE RESET\n", ha->host_no, bus);
                ha->flags.in_reset = 1;
                if (qla1280_bus_reset(ha, bus == 0))
                        result = SUCCESS;
 
                break;
 
        case ADAPTER_RESET:
        default:
                if (qla1280_verbose) {
                        printk(KERN_INFO
                               "scsi(%ld): Issued ADAPTER RESET\n",
                               ha->host_no);
                        printk(KERN_INFO "scsi(%ld): I/O processing will "
                               "continue automatically\n", ha->host_no);
                }
                ha->flags.reset_active = 1;
                /*
                 * We restarted all of the commands automatically, so the
                 * mid-level code can expect completions momentitarily.
                 */
                if (qla1280_abort_isp(ha) == 0)
                        result = SUCCESS;
 
                ha->flags.reset_active = 0;
        }
 
        if (ha->done_q_first)
                qla1280_done(ha, &ha->done_q_first, &ha->done_q_last);
        ha->flags.in_reset = 0;
 
        /* If we didn't manage to issue the action, or we have no
         * command to wait for, exit here */
        if (result == FAILED || handle == NULL ||
            handle == (unsigned char *)INVALID_HANDLE)
                goto leave;
 
        /* set up a timer just in case we're really jammed */
        init_timer(&timer);
        timer.expires = jiffies + 4*HZ;
        timer.data = (unsigned long)cmd;
        timer.function = qla1280_error_wait_timeout;
        add_timer(&timer);
 
        /* wait for the action to complete (or the timer to expire) */
        spin_unlock_irq(HOST_LOCK);
        wait_for_completion(&wait);
        del_timer_sync(&timer);
        spin_lock_irq(HOST_LOCK);
        sp->wait = NULL;
 
        /* the only action we might get a fail for is abort */
        if (action == ABORT_COMMAND) {
                if(sp->flags & SRB_ABORTED)
                        result = SUCCESS;
                else
                        result = FAILED;
        }
 
 leave:
        dprintk(1, "RESET returning %d\n", result);
 
        LEAVE("qla1280_error_action");
        return result;
}
 
/**************************************************************************
 *   qla1280_abort
 *     Abort the specified SCSI command(s).
 **************************************************************************/
static int
qla1280_eh_abort(struct scsi_cmnd * cmd)
{
        return qla1280_error_action(cmd, ABORT_COMMAND);
}
 
/**************************************************************************
 *   qla1280_device_reset
 *     Reset the specified SCSI device
 **************************************************************************/
static int
qla1280_eh_device_reset(struct scsi_cmnd *cmd)
{
        return qla1280_error_action(cmd, DEVICE_RESET);
}
 
/**************************************************************************
 *   qla1280_bus_reset
 *     Reset the specified bus.
 **************************************************************************/
static int
qla1280_eh_bus_reset(struct scsi_cmnd *cmd)
{
        return qla1280_error_action(cmd, BUS_RESET);
}
 
/**************************************************************************
 *   qla1280_adapter_reset
 *     Reset the specified adapter (both channels)
 **************************************************************************/
static int
qla1280_eh_adapter_reset(struct scsi_cmnd *cmd)
{
        return qla1280_error_action(cmd, ADAPTER_RESET);
}
 
/**************************************************************************
 * qla1280_biosparam
 *   Return the disk geometry for the given SCSI device.
 **************************************************************************/
static int
#if LINUX_VERSION_CODE < 0x020545
qla1280_biosparam(Disk * disk, kdev_t dev, int geom[])
#else
qla1280_biosparam(struct scsi_device *sdev, struct block_device *bdev,
                  sector_t capacity, int geom[])
#endif
{
        int heads, sectors, cylinders;
#if LINUX_VERSION_CODE < 0x020545
        unsigned long capacity = disk->capacity;
#endif
 
        heads = 64;
        sectors = 32;
        cylinders = (unsigned long)capacity / (heads * sectors);
        if (cylinders > 1024) {
                heads = 255;
                sectors = 63;
                cylinders = (unsigned long)capacity / (heads * sectors);
                /* if (cylinders > 1023)
                   cylinders = 1023; */
        }
 
        geom[0] = heads;
        geom[1] = sectors;
        geom[2] = cylinders;
 
        return 0;
}
 
/**************************************************************************
 * qla1280_intr_handler
 *   Handles the H/W interrupt
 **************************************************************************/
irqreturn_t
qla1280_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
{
        struct scsi_qla_host *ha;
        struct device_reg *reg;
        u16 data;
        int handled = 0;
 
        ENTER_INTR ("qla1280_intr_handler");
        ha = (struct scsi_qla_host *)dev_id;
 
        spin_lock(HOST_LOCK);
 
        ha->isr_count++;
        reg = ha->iobase;
 
        WRT_REG_WORD(&reg->ictrl, 0);    /* disable our interrupt. */
 
        data = qla1280_debounce_register(&reg->istatus);
        /* Check for pending interrupts. */
        if (data & RISC_INT) {
                qla1280_isr(ha, &ha->done_q_first, &ha->done_q_last);
                handled = 1;
        }
        if (ha->done_q_first)
                qla1280_done(ha, &ha->done_q_first, &ha->done_q_last);
 
        spin_unlock(HOST_LOCK);
 
        /* enable our interrupt. */
        WRT_REG_WORD(&reg->ictrl, (ISP_EN_INT | ISP_EN_RISC));
 
        LEAVE_INTR("qla1280_intr_handler");
        return IRQ_RETVAL(handled);
}
 
 
static int
qla12160_set_target_parameters(struct scsi_qla_host *ha, int bus, int target)
{
        uint8_t mr;
        uint16_t mb[MAILBOX_REGISTER_COUNT];
        struct nvram *nv;
        int is1x160, status;
 
        nv = &ha->nvram;
 
        if (ha->device_id == PCI_DEVICE_ID_QLOGIC_ISP12160 ||
            ha->device_id == PCI_DEVICE_ID_QLOGIC_ISP10160)
                is1x160 = 1;
        else
                is1x160 = 0;
 
        mr = BIT_3 | BIT_2 | BIT_1 | BIT_0;
 
        /* Set Target Parameters. */
        mb[0] = MBC_SET_TARGET_PARAMETERS;
        mb[1] = (uint16_t) (bus ? target | BIT_7 : target);
        mb[1] <<= 8;
 
        mb[2] = (nv->bus[bus].target[target].parameter.c << 8);
 
        if (is1x160)
                mb[3] = nv->bus[bus].target[target].flags.flags1x160.sync_offset << 8;
        else
                mb[3] = nv->bus[bus].target[target].flags.flags1x80.sync_offset << 8;
        mb[3] |= nv->bus[bus].target[target].sync_period;
 
        if (is1x160) {
                mb[2] |= nv->bus[bus].target[target].ppr_1x160.flags.enable_ppr << 5;
                mb[6] = nv->bus[bus].target[target].ppr_1x160.flags.ppr_options << 8;
                mb[6] |= nv->bus[bus].target[target].ppr_1x160.flags.ppr_bus_width;
                mr |= BIT_6;
        }
 
        status = qla1280_mailbox_command(ha, mr, &mb[0]);
 
        if (status)
                printk(KERN_WARNING "scsi(%ld:%i:%i): "
                       "qla1280_set_target_parameters() failed\n",
                       ha->host_no, bus, target);
        return status;
}
 
 
/**************************************************************************
 *   qla1280_slave_configure
 *
 * Description:
 *   Determines the queue depth for a given device.  There are two ways
 *   a queue depth can be obtained for a tagged queueing device.  One
 *   way is the default queue depth which is determined by whether
 *   If it is defined, then it is used
 *   as the default queue depth.  Otherwise, we use either 4 or 8 as the
 *   default queue depth (dependent on the number of hardware SCBs).
 **************************************************************************/
static int
qla1280_slave_configure(Scsi_Device *device)
{
        struct scsi_qla_host *ha;
        int default_depth = 3;
        int bus = device->channel;
        int target = device->id;
        int status = 0;
        struct nvram *nv;
        unsigned long flags;
 
        ha = (struct scsi_qla_host *)device->host->hostdata;
        nv = &ha->nvram;
 
        if (qla1280_check_for_dead_scsi_bus(ha, bus))
                return 1;
 
        if (device->tagged_supported &&
            (ha->bus_settings[bus].qtag_enables & (BIT_0 << target))) {
                scsi_adjust_queue_depth(device, MSG_ORDERED_TAG,
                                        ha->bus_settings[bus].hiwat);
        } else {
                scsi_adjust_queue_depth(device, 0, default_depth);
        }
 
#if LINUX_VERSION_CODE > 0x020500
        nv->bus[bus].target[target].parameter.f.enable_sync = device->sdtr;
        nv->bus[bus].target[target].parameter.f.enable_wide = device->wdtr;
        nv->bus[bus].target[target].ppr_1x160.flags.enable_ppr = device->ppr;
#endif
 
        if (driver_setup.no_sync ||
            (driver_setup.sync_mask &&
             (~driver_setup.sync_mask & (1 << target))))
                nv->bus[bus].target[target].parameter.f.enable_sync = 0;
        if (driver_setup.no_wide ||
            (driver_setup.wide_mask &&
             (~driver_setup.wide_mask & (1 << target))))
                nv->bus[bus].target[target].parameter.f.enable_wide = 0;
        if (ha->device_id == PCI_DEVICE_ID_QLOGIC_ISP12160 ||
            ha->device_id == PCI_DEVICE_ID_QLOGIC_ISP10160) {
                if (driver_setup.no_ppr ||
                    (driver_setup.ppr_mask &&
                     (~driver_setup.ppr_mask & (1 << target))))
                        nv->bus[bus].target[target].ppr_1x160.flags.enable_ppr = 0;
        }
 
        spin_lock_irqsave(HOST_LOCK, flags);
        if (nv->bus[bus].target[target].parameter.f.enable_sync) {
                status = qla12160_set_target_parameters(ha, bus, target);
        }
 
        qla12160_get_target_parameters(ha, device);
        spin_unlock_irqrestore(HOST_LOCK, flags);
        return status;
}
 
#if LINUX_VERSION_CODE < 0x020545
/**************************************************************************
 *   qla1280_select_queue_depth
 *
 *   Sets the queue depth for each SCSI device hanging off the input
 *   host adapter.  We use a queue depth of 2 for devices that do not
 *   support tagged queueing.
 **************************************************************************/
static void
qla1280_select_queue_depth(struct Scsi_Host *host, Scsi_Device *scsi_devs)
{
        Scsi_Device *device;
        struct scsi_qla_host *ha = (struct scsi_qla_host *)host->hostdata;
 
        ENTER("qla1280_select_queue_depth");
        for (device = scsi_devs; device != NULL; device = device->next) {
                if (device->host == host)
                        qla1280_slave_configure(device);
        }
 
        if (scsi_devs)
                qla1280_check_for_dead_scsi_bus(ha, scsi_devs->channel);
 
        LEAVE("qla1280_select_queue_depth");
}
#endif
 
/*
 * Driver Support Routines
 */
 
/*
 * qla1280_done
 *      Process completed commands.
 *
 * Input:
 *      ha           = adapter block pointer.
 *      done_q_first = done queue first pointer.
 *      done_q_last  = done queue last pointer.
 */
static void
qla1280_done(struct scsi_qla_host *ha, struct srb ** done_q_first,
             struct srb ** done_q_last)
{
        struct srb *sp;
        int bus, target, lun;
        Scsi_Cmnd *cmd;
 
        ENTER("qla1280_done");
 
        while (*done_q_first != NULL) {
                /* remove command from done list */
                sp = *done_q_first;
                if (!(*done_q_first = sp->s_next))
                        *done_q_last = NULL;
                else
                        (*done_q_first)->s_prev = NULL;
 
                cmd = sp->cmd;
                bus = SCSI_BUS_32(cmd);
                target = SCSI_TCN_32(cmd);
                lun = SCSI_LUN_32(cmd);
 
                switch ((CMD_RESULT(cmd) >> 16)) {
                case DID_RESET:
                        /* Issue marker command. */
                        qla1280_marker(ha, bus, target, 0, MK_SYNC_ID);
                        break;
                case DID_ABORT:
                        sp->flags &= ~SRB_ABORT_PENDING;
                        sp->flags |= SRB_ABORTED;
                        if (sp->flags & SRB_TIMEOUT)
                                CMD_RESULT(sp->cmd) = DID_TIME_OUT << 16;
                        break;
                default:
                        break;
                }
 
                /* Release memory used for this I/O */
                if (cmd->use_sg) {
                        dprintk(3, "S/G unmap_sg cmd=%p\n", cmd);
 
                        pci_unmap_sg(ha->pdev, cmd->request_buffer,
                                     cmd->use_sg,
                                     scsi_to_pci_dma_dir(cmd->sc_data_direction));
                } else if (cmd->request_bufflen) {
                        /*dprintk(1, "No S/G unmap_single cmd=%x saved_dma_handle=%lx\n",
                          cmd, sp->saved_dma_handle); */
 
                        pci_unmap_page(ha->pdev, sp->saved_dma_handle,
                                       cmd->request_bufflen,
                                       scsi_to_pci_dma_dir(cmd->sc_data_direction));
                }
 
                /* Call the mid-level driver interrupt handler */
                CMD_HANDLE(sp->cmd) = (unsigned char *)INVALID_HANDLE;
                ha->actthreads--;
 
#if LINUX_VERSION_CODE < 0x020500
                if (cmd->cmnd[0] == INQUIRY)
                        qla1280_get_target_options(cmd, ha);
#endif
                (*(cmd)->scsi_done)(cmd);
 
                if(sp->wait != NULL)
                        complete(sp->wait);
 
        }
        LEAVE("qla1280_done");
}
 
/*
 * Translates a ISP error to a Linux SCSI error
 */
static int
qla1280_return_status(struct response * sts, Scsi_Cmnd * cp)
{
        int host_status = DID_ERROR;
#if DEBUG_QLA1280_INTR
        static char *reason[] = {
                "DID_OK",
                "DID_NO_CONNECT",
                "DID_BUS_BUSY",
                "DID_TIME_OUT",
                "DID_BAD_TARGET",
                "DID_ABORT",
                "DID_PARITY",
                "DID_ERROR",
                "DID_RESET",
                "DID_BAD_INTR"
        };
#endif                          /* DEBUG_QLA1280_INTR */
 
        ENTER("qla1280_return_status");
 
#if DEBUG_QLA1280_INTR
        /*
          dprintk(1, "qla1280_return_status: compl status = 0x%04x\n",
          sts->comp_status);
        */
#endif
        switch (sts->comp_status) {
        case CS_COMPLETE:
                host_status = DID_OK;
                break;
 
        case CS_INCOMPLETE:
                if (!(sts->state_flags & SF_GOT_BUS))
                        host_status = DID_NO_CONNECT;
                else if (!(sts->state_flags & SF_GOT_TARGET))
                        host_status = DID_BAD_TARGET;
                else if (!(sts->state_flags & SF_SENT_CDB))
                        host_status = DID_ERROR;
                else if (!(sts->state_flags & SF_TRANSFERRED_DATA))
                        host_status = DID_ERROR;
                else if (!(sts->state_flags & SF_GOT_STATUS))
                        host_status = DID_ERROR;
                else if (!(sts->state_flags & SF_GOT_SENSE))
                        host_status = DID_ERROR;
                break;
 
        case CS_RESET:
                host_status = DID_RESET;
                break;
 
        case CS_ABORTED:
                host_status = DID_ABORT;
                break;
 
        case CS_TIMEOUT:
                host_status = DID_TIME_OUT;
                break;
 
        case CS_DATA_OVERRUN:
                dprintk(2, "Data overrun 0x%x\n", sts->residual_length);
                dprintk(2, "qla1280_isr: response packet data\n");
                qla1280_dump_buffer(2, (char *)sts, RESPONSE_ENTRY_SIZE);
                host_status = DID_ERROR;
                break;
 
        case CS_DATA_UNDERRUN:
                if ((cp->request_bufflen - sts->residual_length) <
                    cp->underflow) {
                        printk(KERN_WARNING
                               "scsi: Underflow detected - retrying "
                               "command.\n");
                        host_status = DID_ERROR;
                } else
                        host_status = DID_OK;
                break;
 
        default:
                host_status = DID_ERROR;
                break;
        }
 
#if DEBUG_QLA1280_INTR
        dprintk(1, "qla1280 ISP status: host status (%s) scsi status %x\n",
                reason[host_status], sts->scsi_status);
#endif
 
        LEAVE("qla1280_return_status");
 
        return (sts->scsi_status & 0xff) | (host_status << 16);
}
 
/*
 * qla1280_done_q_put
 *      Place SRB command on done queue.
 *
 * Input:
 *      sp           = srb pointer.
 *      done_q_first = done queue first pointer.
 *      done_q_last  = done queue last pointer.
 */
static void
qla1280_done_q_put(struct srb * sp, struct srb ** done_q_first,
                   struct srb ** done_q_last)
{
        ENTER("qla1280_put_done_q");
 
        /* Place block on done queue */
        sp->s_next = NULL;
        sp->s_prev = *done_q_last;
        if (!*done_q_first)
                *done_q_first = sp;
        else
                (*done_q_last)->s_next = sp;
        *done_q_last = sp;
 
        LEAVE("qla1280_put_done_q");
}
 
 
/*
* qla1280_mem_alloc
*      Allocates adapter memory.
*
* Returns:
*      0  = success.
*      1  = failure.
*/
static int
qla1280_mem_alloc(struct scsi_qla_host *ha)
{
        int status = 1;
        dma_addr_t dma_handle;
 
        ENTER("qla1280_mem_alloc");
 
        /* get consistent memory allocated for request and response rings */
        ha->request_ring = pci_alloc_consistent(ha->pdev,
                                                ((REQUEST_ENTRY_CNT + 1) *
                                                 (sizeof(request_t))),
                                                &dma_handle);
        if (!ha->request_ring)
                goto error;
        ha->request_dma = dma_handle;
        ha->response_ring = pci_alloc_consistent(ha->pdev,
                                                 ((RESPONSE_ENTRY_CNT + 1) *
                                                  (sizeof(struct response))),
                                                 &dma_handle);
        if (!ha->response_ring)
                goto error;
        ha->response_dma = dma_handle;
        status = 0;
        goto finish;
 
 error:
        if (status)
                dprintk(2, "qla1280_mem_alloc: **** FAILED ****\n");
 
        if (ha->request_ring)
                pci_free_consistent(ha->pdev,
                                    ((REQUEST_ENTRY_CNT + 1) *
                                     (sizeof(request_t))),
                                    ha->request_ring, ha->request_dma);
 finish:
        LEAVE("qla1280_mem_alloc");
        return status;
}
 
/*
 * qla1280_mem_free
 *      Frees adapter allocated memory.
 *
 * Input:
 *      ha = adapter block pointer.
 */
static void
qla1280_mem_free(struct scsi_qla_host *ha)
{
        ENTER("qlc1280_mem_free");
        /* free consistent memory allocated for request and response rings */
        if (ha->request_ring)
                pci_free_consistent(ha->pdev,
                                    ((REQUEST_ENTRY_CNT + 1) *
                                     (sizeof(request_t))),
                                    ha->request_ring, ha->request_dma);
 
        if (ha->response_ring)
                pci_free_consistent(ha->pdev,
                                    ((RESPONSE_ENTRY_CNT + 1) *
                                     (sizeof(struct response))),
                                    ha->response_ring, ha->response_dma);
 
        if (qla1280_buffer) {
                free_page((unsigned long) qla1280_buffer);
                qla1280_buffer = NULL;
        }
 
        LEAVE("qlc1280_mem_free");
}
 
/****************************************************************************/
/*                QLogic ISP1280 Hardware Support Functions.                */
/****************************************************************************/
 
 /*
    * qla2100_enable_intrs
    * qla2100_disable_intrs
    *
    * Input:
    *      ha = adapter block pointer.
    *
    * Returns:
    *      None
  */
static inline void
qla1280_enable_intrs(struct scsi_qla_host *ha)
{
        struct device_reg *reg;
 
        reg = ha->iobase;
        /* enable risc and host interrupts */
        WRT_REG_WORD(&reg->ictrl, (ISP_EN_INT | ISP_EN_RISC));
        RD_REG_WORD(&reg->ictrl);       /* PCI Posted Write flush */
        ha->flags.ints_enabled = 1;
}
 
static inline void
qla1280_disable_intrs(struct scsi_qla_host *ha)
{
        struct device_reg *reg;
 
        reg = ha->iobase;
        /* disable risc and host interrupts */
        WRT_REG_WORD(&reg->ictrl, 0);
        RD_REG_WORD(&reg->ictrl);       /* PCI Posted Write flush */
        ha->flags.ints_enabled = 0;
}
 
/*
 * qla1280_initialize_adapter
 *      Initialize board.
 *
 * Input:
 *      ha = adapter block pointer.
 *
 * Returns:
 *      0 = success
 */
static int
qla1280_initialize_adapter(struct scsi_qla_host *ha)
{
        struct device_reg *reg;
        int status;
        int bus;
#if LINUX_VERSION_CODE > 0x020500
        unsigned long flags;
#endif
 
        ENTER("qla1280_initialize_adapter");
 
        /* Clear adapter flags. */
        ha->flags.online = 0;
        ha->flags.disable_host_adapter = 0;
        ha->flags.reset_active = 0;
        ha->flags.abort_isp_active = 0;
 
        ha->flags.ints_enabled = 0;
#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
        if (ia64_platform_is("sn2")) {
                int count1, count2;
                int c;
 
                count1 = 3;
                count2 = 3;
                printk(KERN_INFO "scsi(%li): Enabling SN2 PCI DMA "
                       "dual channel lockup workaround\n", ha->host_no);
                if ((c = snia_pcibr_rrb_alloc(ha->pdev, &count1, &count2)) < 0)
                        printk(KERN_ERR "scsi(%li): Unable to allocate SN2 "
                               "virtual DMA channels\n", ha->host_no);
                ha->flags.use_pci_vchannel = 1;
 
                driver_setup.no_nvram = 1;
        }
#endif
 
        dprintk(1, "Configure PCI space for adapter...\n");
 
        reg = ha->iobase;
 
        /* Insure mailbox registers are free. */
        WRT_REG_WORD(&reg->semaphore, 0);
        WRT_REG_WORD(&reg->host_cmd, HC_CLR_RISC_INT);
        WRT_REG_WORD(&reg->host_cmd, HC_CLR_HOST_INT);
        RD_REG_WORD(&reg->host_cmd);
 
        if (qla1280_read_nvram(ha)) {
                dprintk(2, "qla1280_initialize_adapter: failed to read "
                        "NVRAM\n");
        }
 
#if LINUX_VERSION_CODE >= 0x020500
        /*
         * It's necessary to grab the spin here as qla1280_mailbox_command
         * needs to be able to drop the lock unconditionally to wait
         * for completion.
         * In 2.4 ->detect is called with the io_request_lock held.
         */
        spin_lock_irqsave(HOST_LOCK, flags);
#endif
        /* If firmware needs to be loaded */
        if (qla1280_isp_firmware(ha)) {
                if (!(status = qla1280_chip_diag (ha))) {
                        status = qla1280_setup_chip(ha);
                }
        } else {
                printk(KERN_ERR "scsi(%li): isp_firmware() failed!\n",
                       ha->host_no);
                status = 1;
        }
 
        if (status) {
                printk(KERN_ERR "scsi(%li): initialize: pci probe failed!\n",
                       ha->host_no);
                goto out;
        }
 
        /* Setup adapter based on NVRAM parameters. */
        dprintk(1, "scsi(%ld): Configure NVRAM parameters\n", ha->host_no);
        qla1280_nvram_config(ha);
 
        if (!ha->flags.disable_host_adapter && !qla1280_init_rings(ha)) {
                /* Issue SCSI reset. */
                /* dg 03/13 if we can't reset twice then bus is dead */
                for (bus = 0; bus < ha->ports; bus++) {
                        if (!ha->bus_settings[bus].disable_scsi_reset){
                                if (qla1280_bus_reset(ha, bus)) {
                                        if (qla1280_bus_reset(ha, bus)) {
                                                ha->bus_settings[bus].scsi_bus_dead = 1;
                                        }
                                }
                        }
                }
 
                /*
                 * qla1280_bus_reset() will take care of issueing markers,
                 * no need to do that here as well!
                 */
#if 0
                /* Issue marker command. */
                ha->flags.reset_marker = 0;
                for (bus = 0; bus < ha->ports; bus++) {
                        ha->bus_settings[bus].reset_marker = 0;
                        qla1280_marker(ha, bus, 0, 0, MK_SYNC_ALL);
                }
#endif
 
                ha->flags.online = 1;
        } else
                status = 1;
 
 out:
#if LINUX_VERSION_CODE >= 0x020500
        spin_unlock_irqrestore(HOST_LOCK, flags);
#endif
        if (status)
                dprintk(2, "qla1280_initialize_adapter: **** FAILED ****\n");
 
        LEAVE("qla1280_initialize_adapter");
        return status;
}
 
 
/*
 * ISP Firmware Test
 *      Checks if present version of RISC firmware is older than
 *      driver firmware.
 *
 * Input:
 *      ha = adapter block pointer.
 *
 * Returns:
 *      0 = firmware does not need to be loaded.
 */
static int
qla1280_isp_firmware(struct scsi_qla_host *ha)
{
        struct nvram *nv = (struct nvram *) ha->response_ring;
        int status = 0;          /* dg 2/27 always loads RISC */
        uint16_t mb[MAILBOX_REGISTER_COUNT];
 
        ENTER("qla1280_isp_firmware");
 
        dprintk(1, "scsi(%li): Determining if RISC is loaded\n", ha->host_no);
 
        /* Bad NVRAM data, load RISC code. */
        if (!ha->nvram_valid) {
                ha->flags.disable_risc_code_load = 0;
        } else
                ha->flags.disable_risc_code_load =
                        nv->cntr_flags_1.disable_loading_risc_code;
 
        if (ha->flags.disable_risc_code_load) {
                dprintk(3, "qla1280_isp_firmware: Telling RISC to verify "
                        "checksum of loaded BIOS code.\n");
 
                /* Verify checksum of loaded RISC code. */
                mb[0] = MBC_VERIFY_CHECKSUM;
                /* mb[1] = ql12_risc_code_addr01; */
                mb[1] = *ql1280_board_tbl[ha->devnum].fwstart;
 
                if (!(status =
                      qla1280_mailbox_command(ha, BIT_1 | BIT_0, &mb[0]))) {
                        /* Start firmware execution. */
                        dprintk(3, "qla1280_isp_firmware: Startng F/W "
                                "execution.\n");
 
                        mb[0] = MBC_EXECUTE_FIRMWARE;
                        /* mb[1] = ql12_risc_code_addr01; */
                        mb[1] = *ql1280_board_tbl[ha->devnum].fwstart;
                        qla1280_mailbox_command(ha, BIT_1 | BIT_0, &mb[0]);
                } else
                        printk(KERN_INFO "qla1280: RISC checksum failed.\n");
        } else {
                dprintk(1, "qla1280: NVRAM configured to load RISC load.\n");
                status = 1;
        }
 
        if (status)
                dprintk(2, "qla1280_isp_firmware: **** Load RISC code ****\n");
 
        LEAVE("qla1280_isp_firmware");
        return status;
}
 
/*
 * PCI configuration
 *      Setup device PCI configuration registers.
 *
 * Input:
 *      ha = adapter block pointer.
 *
 * Returns:
 *      0 = success.
 */
static int
qla1280_pci_config(struct scsi_qla_host *ha)
{
#if MEMORY_MAPPED_IO
        unsigned long base;
        int size;
#endif
        uint16_t buf_wd;
        int status = 1;
 
        ENTER("qla1280_pci_config");
 
        pci_set_master(ha->pdev);
        /*
         * Set Bus Master Enable, Memory Address Space Enable and
         * reset any error bits, in the command register.
         */
        pci_read_config_word (ha->pdev, PCI_COMMAND, &buf_wd);
#if MEMORY_MAPPED_IO
        buf_wd |= PCI_COMMAND_MEMORY;
#endif
        buf_wd |= PCI_COMMAND_IO;
        pci_write_config_word (ha->pdev, PCI_COMMAND, buf_wd);
        /*
         * Reset expansion ROM address decode enable.
         */
        pci_read_config_word(ha->pdev, PCI_ROM_ADDRESS, &buf_wd);
        buf_wd &= ~PCI_ROM_ADDRESS_ENABLE;
        pci_write_config_word (ha->pdev, PCI_ROM_ADDRESS, buf_wd);
 
        ha->host->io_port = pci_resource_start(ha->pdev, 0);
        ha->host->io_port &= PCI_BASE_ADDRESS_IO_MASK;
        ha->iobase = (struct device_reg *) ha->host->io_port;
 
#if MEMORY_MAPPED_IO
        /*
         * Find proper memory chunk for memory map I/O reg.
         */
        base = pci_resource_start(ha->pdev, 1);
        size = pci_resource_len(ha->pdev, 1);
        /*
         * Get virtual address for I/O registers.
         */
        ha->mmpbase = ioremap(base, size);
        if (ha->mmpbase) {
                ha->iobase = (struct device_reg *)ha->mmpbase;
                status = 0;
        }
#else                           /* MEMORY_MAPPED_IO */
        status = 0;
#endif                          /* MEMORY_MAPPED_IO */
 
        LEAVE("qla1280_pci_config");
        return status;
}
 
/*
 * Chip diagnostics
 *      Test chip for proper operation.
 *
 * Input:
 *      ha = adapter block pointer.
 *
 * Returns:
 *      0 = success.
 */
static int
qla1280_chip_diag(struct scsi_qla_host *ha)
{
        uint16_t mb[MAILBOX_REGISTER_COUNT];
        struct device_reg *reg = ha->iobase;
        int status = 0;
        int cnt;
        uint16_t data;
 
        dprintk(3, "qla1280_chip_diag: testing device at 0x%p \n", &reg->id_l);
 
        dprintk(1, "scsi(%ld): Verifying chip\n", ha->host_no);
 
        /* Soft reset chip and wait for it to finish. */
        WRT_REG_WORD(&reg->ictrl, ISP_RESET);
        /*
         * We can't do a traditional PCI write flush here by reading
         * back the register. The card will not respond once the reset
         * is in action and we end up with a machine check exception
         * instead. Nothing to do but wait and hope for the best.
         * A portable pci_write_flush(pdev) call would be very useful here.
         */
        udelay(20);
        data = qla1280_debounce_register(&reg->ictrl);
        /*
         * Yet another QLogic gem ;-(
         */
        for (cnt = 1000000; cnt && data & ISP_RESET; cnt--) {
                udelay(5);
                data = RD_REG_WORD(&reg->ictrl);
        }
 
        if (cnt) {
                /* Reset register cleared by chip reset. */
                dprintk(3, "qla1280_chip_diag: reset register cleared by "
                        "chip reset\n");
 
                WRT_REG_WORD(&reg->cfg_1, 0);
 
                /* Reset RISC and disable BIOS which
                   allows RISC to execute out of RAM. */
#if 0
                WRT_REG_WORD(&reg->host_cmd, HC_RESET_RISC);
                RD_REG_WORD(&reg->id_l);        /* Flush PCI write */
                WRT_REG_WORD(&reg->host_cmd, HC_RELEASE_RISC);
                RD_REG_WORD(&reg->id_l);        /* Flush PCI write */
                WRT_REG_WORD(&reg->host_cmd, HC_DISABLE_BIOS);
#else
                WRT_REG_WORD(&reg->host_cmd, HC_RESET_RISC |
                             HC_RELEASE_RISC | HC_DISABLE_BIOS);
#endif
                RD_REG_WORD(&reg->id_l);        /* Flush PCI write */
                data = qla1280_debounce_register(&reg->mailbox0);
                /*
                 * I *LOVE* this code!
                 */
                for (cnt = 1000000; cnt && data == MBS_BUSY; cnt--) {
                        udelay(5);
                        data = RD_REG_WORD(&reg->mailbox0);
                }
 
                if (cnt) {
                        /* Check product ID of chip */
                        dprintk(3, "qla1280_chip_diag: Checking product "
                                "ID of chip\n");
 
                        if (RD_REG_WORD(&reg->mailbox1) != PROD_ID_1 ||
                            (RD_REG_WORD(&reg->mailbox2) != PROD_ID_2 &&
                             RD_REG_WORD(&reg->mailbox2) != PROD_ID_2a) ||
                            RD_REG_WORD(&reg->mailbox3) != PROD_ID_3 ||
                            RD_REG_WORD(&reg->mailbox4) != PROD_ID_4) {
                                printk(KERN_INFO "qla1280: Wrong product ID = "
                                       "0x%x,0x%x,0x%x,0x%x\n",
                                       RD_REG_WORD(&reg->mailbox1),
                                       RD_REG_WORD(&reg->mailbox2),
                                       RD_REG_WORD(&reg->mailbox3),
                                       RD_REG_WORD(&reg->mailbox4));
                                status = 1;
                        } else {
                                /*
                                 * Enable ints early!!!
                                 */
                                qla1280_enable_intrs(ha);
 
                                dprintk(1, "qla1280_chip_diag: Checking "
                                        "mailboxes of chip\n");
                                /* Wrap Incoming Mailboxes Test. */
                                mb[0] = MBC_MAILBOX_REGISTER_TEST;
                                mb[1] = 0xAAAA;
                                mb[2] = 0x5555;
                                mb[3] = 0xAA55;
                                mb[4] = 0x55AA;
                                mb[5] = 0xA5A5;
                                mb[6] = 0x5A5A;
                                mb[7] = 0x2525;
                                if (!(status = qla1280_mailbox_command(ha,
                                                                       0xff,
                                                                       &mb
                                                                       [0]))) {
                                        if (mb[1] != 0xAAAA ||
                                            mb[2] != 0x5555 ||
                                            mb[3] != 0xAA55 ||
                                            mb[4] != 0x55AA ||
                                            mb[5] != 0xA5A5 ||
                                            mb[6] != 0x5A5A ||
                                            mb[7] != 0x2525) {
                                                status = 1;
                                                printk(KERN_INFO "qla1280: "
                                                       "Failed mbox check\n");
                                        }
                                }
                        }
                } else
                        status = 1;
        } else
                status = 1;
 
        if (status)
                dprintk(2, "qla1280_chip_diag: **** FAILED ****\n");
        else
                dprintk(3, "qla1280_chip_diag: exiting normally\n");
 
        return status;
}
 
/*
 * Setup chip
 *      Load and start RISC firmware.
 *
 * Input:
 *      ha = adapter block pointer.
 *
 * Returns:
 *      0 = success.
 */
#define DUMP_IT_BACK 0          /* for debug of RISC loading */
static int
qla1280_setup_chip(struct scsi_qla_host *ha)
{
        int status = 0;
        uint16_t risc_address;
        uint16_t *risc_code_address;
        int risc_code_size;
        uint16_t mb[MAILBOX_REGISTER_COUNT];
        uint16_t cnt;
        int num, i;
#if DUMP_IT_BACK
        uint8_t *sp;
        uint8_t *tbuf;
        dma_addr_t p_tbuf;
#endif
 
        ENTER("qla1280_setup_chip");
 
        dprintk(1, "scsi(%ld): Setup chip\n", ha->host_no);
 
#if DUMP_IT_BACK
        /* get consistent memory allocated for setup_chip */
        tbuf = pci_alloc_consistent(ha->pdev, 8000, &p_tbuf);
#endif
 
        /* Load RISC code. */
        risc_address = *ql1280_board_tbl[ha->devnum].fwstart;
        risc_code_address = ql1280_board_tbl[ha->devnum].fwcode;
        risc_code_size = (int) *ql1280_board_tbl[ha->devnum].fwlen;
 
        dprintk(1, "qla1280_setup_chip: DMA RISC code (%i) words\n",
                risc_code_size);
 
        num = 0;
        while (risc_code_size > 0 && !status) {
                int warn __attribute__((unused)) = 0;
 
                cnt = 2000 >> 1;
 
                if (cnt > risc_code_size)
                        cnt = risc_code_size;
 
                dprintk(2, "qla1280_setup_chip:  loading risc @ =(0x%p),"
                        "%d,%d(0x%x)\n",
                        risc_code_address, cnt, num, risc_address);
                for(i = 0; i < cnt; i++)
                        ((uint16_t *)ha->request_ring)[i] =
                                cpu_to_le16(risc_code_address[i]);
 
                flush_cache_all();
 
                mb[0] = MBC_LOAD_RAM;
                mb[1] = risc_address;
                mb[4] = cnt;
                mb[3] = ha->request_dma & 0xffff;
                mb[2] = (ha->request_dma >> 16) & 0xffff;
                mb[7] = pci_dma_hi32(ha->request_dma) & 0xffff;
                mb[6] = pci_dma_hi32(ha->request_dma) >> 16;
                dprintk(2, "qla1280_setup_chip: op=%d  0x%p = 0x%4x,0x%4x,"
                        "0x%4x,0x%4x\n", mb[0], (void *)(long)ha->request_dma,
                        mb[6], mb[7], mb[2], mb[3]);
                if ((status = qla1280_mailbox_command(ha, BIT_4 | BIT_3 |
                                                      BIT_2 | BIT_1 | BIT_0,
                                                      &mb[0]))) {
                        printk(KERN_ERR "scsi(%li): Failed to load partial "
                               "segment of f\n", ha->host_no);
                        break;
                }
 
#if DUMP_IT_BACK
                mb[0] = MBC_DUMP_RAM;
                mb[1] = risc_address;
                mb[4] = cnt;
                mb[3] = p_tbuf & 0xffff;
                mb[2] = (p_tbuf >> 16) & 0xffff;
                mb[7] = pci_dma_hi32(p_tbuf) & 0xffff;
                mb[6] = pci_dma_hi32(p_tbuf) >> 16;
 
                if ((status = qla1280_mailbox_command(ha,
                                                      BIT_4 | BIT_3 | BIT_2 |
                                                      BIT_1 | BIT_0,
                                                      &mb[0]))) {
                        printk(KERN_ERR
                               "Failed to dump partial segment of f/w\n");
                        break;
                }
                sp = (uint8_t *)ha->request_ring;
                for (i = 0; i < (cnt << 1); i++) {
                        if (tbuf[i] != sp[i] && warn++ < 10) {
                                printk(KERN_ERR "qla1280_setup_chip: FW "
                                       "compare error @ byte(0x%x) loop#=%x\n",
                                       i, num);
                                printk(KERN_ERR "setup_chip: FWbyte=%x  "
                                       "FWfromChip=%x\n", sp[i], tbuf[i]);
                                /*break; */
                        }
                }
#endif
                risc_address += cnt;
                risc_code_size = risc_code_size - cnt;
                risc_code_address = risc_code_address + cnt;
                num++;
        }
 
        /* Verify checksum of loaded RISC code. */
        if (!status) {
                dprintk(1, "qla1280_setup_chip: Verifying checksum of "
                        "loaded RISC code.\n");
                mb[0] = MBC_VERIFY_CHECKSUM;
                /* mb[1] = ql12_risc_code_addr01; */
                mb[1] = *ql1280_board_tbl[ha->devnum].fwstart;
 
                if (!(status =
                      qla1280_mailbox_command(ha, BIT_1 | BIT_0, &mb[0]))) {
                        /* Start firmware execution. */
                        dprintk(1,
                                "qla1280_setup_chip: start firmware running.\n");
                        mb[0] = MBC_EXECUTE_FIRMWARE;
                        mb[1] = *ql1280_board_tbl[ha->devnum].fwstart;
                        qla1280_mailbox_command(ha, BIT_1 | BIT_0, &mb[0]);
                } else
                        printk(KERN_ERR "scsi(%li): qla1280_setup_chip: "
                               "Failed checksum\n", ha->host_no);
        }
 
#if DUMP_IT_BACK
        /* free consistent memory allocated for setup_chip */
        pci_free_consistent(ha->pdev, 8000, tbuf, p_tbuf);
#endif
 
        if (status)
                dprintk(2, "qla1280_setup_chip: **** FAILED ****\n");
 
        LEAVE("qla1280_setup_chip");
        return status;
}
 
/*
 * Initialize rings
 *
 * Input:
 *      ha                = adapter block pointer.
 *      ha->request_ring  = request ring virtual address
 *      ha->response_ring = response ring virtual address
 *      ha->request_dma   = request ring physical address
 *      ha->response_dma  = response ring physical address
 *
 * Returns:
 *      0 = success.
 */
static int
qla1280_init_rings(struct scsi_qla_host *ha)
{
        uint16_t mb[MAILBOX_REGISTER_COUNT];
        int status = 0;
 
        ENTER("qla1280_init_rings");
 
        /* Clear outstanding commands array. */
        memset(ha->outstanding_cmds, 0,
               sizeof(struct srb *) * MAX_OUTSTANDING_COMMANDS);
 
        /* Initialize request queue. */
        ha->request_ring_ptr = ha->request_ring;
        ha->req_ring_index = 0;
        ha->req_q_cnt = REQUEST_ENTRY_CNT;
        /* mb[0] = MBC_INIT_REQUEST_QUEUE; */
        mb[0] = MBC_INIT_REQUEST_QUEUE_A64;
        mb[1] = REQUEST_ENTRY_CNT;
        mb[3] = ha->request_dma & 0xffff;
        mb[2] = (ha->request_dma >> 16) & 0xffff;
        mb[4] = 0;
        mb[7] = pci_dma_hi32(ha->request_dma) & 0xffff;
        mb[6] = pci_dma_hi32(ha->request_dma) >> 16;
        if (!(status = qla1280_mailbox_command(ha, BIT_7 | BIT_6 | BIT_4 |
                                               BIT_3 | BIT_2 | BIT_1 | BIT_0,
                                               &mb[0]))) {
                /* Initialize response queue. */
                ha->response_ring_ptr = ha->response_ring;
                ha->rsp_ring_index = 0;
                /* mb[0] = MBC_INIT_RESPONSE_QUEUE; */
                mb[0] = MBC_INIT_RESPONSE_QUEUE_A64;
                mb[1] = RESPONSE_ENTRY_CNT;
                mb[3] = ha->response_dma & 0xffff;
                mb[2] = (ha->response_dma >> 16) & 0xffff;
                mb[5] = 0;
                mb[7] = pci_dma_hi32(ha->response_dma) & 0xffff;
                mb[6] = pci_dma_hi32(ha->response_dma) >> 16;
                status = qla1280_mailbox_command(ha, BIT_7 | BIT_6 | BIT_5 |
                                                 BIT_3 | BIT_2 | BIT_1 | BIT_0,
                                                 &mb[0]);
        }
 
        if (status)
                dprintk(2, "qla1280_init_rings: **** FAILED ****\n");
 
        LEAVE("qla1280_init_rings");
        return status;
}
 
/*
 * NVRAM configuration.
 *
 * Input:
 *      ha                = adapter block pointer.
 *      ha->request_ring  = request ring virtual address
 *
 * Output:
 *      host adapters parameters in host adapter block
 *
 * Returns:
 *      0 = success.
 */
static int
qla1280_nvram_config(struct scsi_qla_host *ha)
{
        struct device_reg *reg = ha->iobase;
        struct nvram *nv;
        int is1x160, status = 0;
        int bus, target, lun;
        uint16_t mb[MAILBOX_REGISTER_COUNT];
        uint16_t mask;
 
        ENTER("qla1280_nvram_config");
 
        if (ha->device_id == PCI_DEVICE_ID_QLOGIC_ISP12160 ||
            ha->device_id == PCI_DEVICE_ID_QLOGIC_ISP10160)
                is1x160 = 1;
        else
                is1x160 = 0;
 
        nv = &ha->nvram;
        if (!ha->nvram_valid) {
                dprintk(1, "Using defaults for NVRAM: \n");
                memset(nv, 0, sizeof(struct nvram));
 
                /* nv->cntr_flags_1.disable_loading_risc_code = 1; */
                nv->firmware_feature.f.enable_fast_posting = 1;
                nv->firmware_feature.f.disable_synchronous_backoff = 1;
 
                nv->termination.f.scsi_bus_0_control = 3;
                nv->termination.f.scsi_bus_1_control = 3;
                nv->termination.f.auto_term_support = 1;
 
                /*
                 * Set default FIFO magic - What appropriate values
                 * would be here is unknown. This is what I have found
                 * testing with 12160s.
                 * Now, I would love the magic decoder ring for this one,
                 * the header file provided by QLogic seems to be bogus
                 * or incomplete at best.
                 */
                nv->isp_config.c = 0x44;
 
                if (is1x160)
                        nv->isp_parameter = 0x01;
 
                for (bus = 0; bus < MAX_BUSES; bus++) {
                        nv->bus[bus].config_1.initiator_id = 7;
                        nv->bus[bus].bus_reset_delay = 5;
                        /* 8 = 5.0 clocks */
                        nv->bus[bus].config_2.async_data_setup_time = 8;
                        nv->bus[bus].config_2.req_ack_active_negation = 1;
                        nv->bus[bus].config_2.data_line_active_negation = 1;
                        nv->bus[bus].selection_timeout = 250;
                        nv->bus[bus].max_queue_depth = 256;
 
                        for (target = 0; target < MAX_TARGETS; target++) {
                                nv->bus[bus].target[target].parameter.f.
                                        renegotiate_on_error = 1;
                                nv->bus[bus].target[target].parameter.f.
                                        auto_request_sense = 1;
                                nv->bus[bus].target[target].parameter.f.
                                        tag_queuing = 1;
                                nv->bus[bus].target[target].parameter.f.
                                        enable_sync = 1;
#if 1   /* Some SCSI Processors do not seem to like this */
                                nv->bus[bus].target[target].parameter.f.
                                        enable_wide = 1;
#endif
                                nv->bus[bus].target[target].parameter.f.
                                        parity_checking = 1;
                                nv->bus[bus].target[target].parameter.f.
                                        disconnect_allowed = 1;
                                nv->bus[bus].target[target].execution_throttle=
                                        nv->bus[bus].max_queue_depth - 1;
                                if (is1x160) {
                                        nv->bus[bus].target[target].flags.
                                                flags1x160.device_enable = 1;
                                        nv->bus[bus].target[target].flags.
                                                flags1x160.sync_offset = 0x0e;
                                        nv->bus[bus].target[target].
                                                sync_period = 9;
                                        nv->bus[bus].target[target].
                                                ppr_1x160.flags.enable_ppr = 1;
                                        nv->bus[bus].target[target].ppr_1x160.
                                                flags.ppr_options = 2;
                                        nv->bus[bus].target[target].ppr_1x160.
                                                flags.ppr_bus_width = 1;
                                } else {
                                        nv->bus[bus].target[target].flags.
                                                flags1x80.device_enable = 1;
                                        nv->bus[bus].target[target].flags.
                                                flags1x80.sync_offset = 0x8;
                                        nv->bus[bus].target[target].
                                                sync_period = 10;
                                }
                        }
                }
        } else {
                /* Always force AUTO sense for LINUX SCSI */
                for (bus = 0; bus < MAX_BUSES; bus++)
                        for (target = 0; target < MAX_TARGETS; target++) {
                                nv->bus[bus].target[target].parameter.f.
                                        auto_request_sense = 1;
                        }
        }
        dprintk(1, "qla1280 : initiator scsi id bus[0]=%d\n",
                nv->bus[0].config_1.initiator_id);
        dprintk(1, "qla1280 : initiator scsi id bus[1]=%d\n",
                nv->bus[1].config_1.initiator_id);
 
        dprintk(1, "qla1280 : bus reset delay[0]=%d\n",
                nv->bus[0].bus_reset_delay);
        dprintk(1, "qla1280 : bus reset delay[1]=%d\n",
                nv->bus[1].bus_reset_delay);
 
        dprintk(1, "qla1280 : retry count[0]=%d\n", nv->bus[0].retry_count);
        dprintk(1, "qla1280 : retry delay[0]=%d\n", nv->bus[0].retry_delay);
        dprintk(1, "qla1280 : retry count[1]=%d\n", nv->bus[1].retry_count);
        dprintk(1, "qla1280 : retry delay[1]=%d\n", nv->bus[1].retry_delay);
 
        dprintk(1, "qla1280 : async data setup time[0]=%d\n",
                nv->bus[0].config_2.async_data_setup_time);
        dprintk(1, "qla1280 : async data setup time[1]=%d\n",
                nv->bus[1].config_2.async_data_setup_time);
 
        dprintk(1, "qla1280 : req/ack active negation[0]=%d\n",
                nv->bus[0].config_2.req_ack_active_negation);
        dprintk(1, "qla1280 : req/ack active negation[1]=%d\n",
                nv->bus[1].config_2.req_ack_active_negation);
 
        dprintk(1, "qla1280 : data line active negation[0]=%d\n",
                nv->bus[0].config_2.data_line_active_negation);
        dprintk(1, "qla1280 : data line active negation[1]=%d\n",
                nv->bus[1].config_2.data_line_active_negation);
 
        dprintk(1, "qla1280 : disable loading risc code=%d\n",
                nv->cntr_flags_1.disable_loading_risc_code);
 
        dprintk(1, "qla1280 : enable 64bit addressing=%d\n",
                nv->cntr_flags_1.enable_64bit_addressing);
 
        dprintk(1, "qla1280 : selection timeout limit[0]=%d\n",
                nv->bus[0].selection_timeout);
        dprintk(1, "qla1280 : selection timeout limit[1]=%d\n",
                nv->bus[1].selection_timeout);
 
        dprintk(1, "qla1280 : max queue depth[0]=%d\n",
                nv->bus[0].max_queue_depth);
        dprintk(1, "qla1280 : max queue depth[1]=%d\n",
                nv->bus[1].max_queue_depth);
 
        /* Disable RISC load of firmware. */
        ha->flags.disable_risc_code_load =
                nv->cntr_flags_1.disable_loading_risc_code;
 
#ifdef QLA_64BIT_PTR
        /* Enable 64bit addressing for OS/System combination supporting it   */
        /* actual NVRAM bit is: nv->cntr_flags_1.enable_64bit_addressing     */
        /* but we will ignore it and use BITS_PER_LONG macro to setup for    */
        /* 64 or 32 bit access of host memory in all x86/ia-64/Alpha systems */
        ha->flags.enable_64bit_addressing = 1;
#else
        ha->flags.enable_64bit_addressing = 0;
#endif
 
        if (ha->flags.enable_64bit_addressing) {
                dprintk(2, "scsi(%li): 64 Bit PCI Addressing Enabled\n",
                        ha->host_no);
 
                pci_set_dma_mask(ha->pdev, (dma_addr_t) ~ 0ULL);
        }
 
        /* Set ISP hardware DMA burst */
        mb[0] = nv->isp_config.c;
        /* Enable DMA arbitration on dual channel controllers */
        if (ha->ports > 1)
                mb[0] |= BIT_13;
        WRT_REG_WORD(&reg->cfg_1, mb[0]);
 
#if 1   /* Is this safe? */
        /* Set SCSI termination. */
        WRT_REG_WORD(&reg->gpio_enable, (BIT_3 + BIT_2 + BIT_1 + BIT_0));
        mb[0] = nv->termination.c & (BIT_3 + BIT_2 + BIT_1 + BIT_0);
        WRT_REG_WORD(&reg->gpio_data, mb[0]);
#endif
 
        /* ISP parameter word. */
        mb[0] = MBC_SET_SYSTEM_PARAMETER;
        mb[1] = nv->isp_parameter;
        status |= qla1280_mailbox_command(ha, BIT_1 | BIT_0, &mb[0]);
 
#if 0
        /* clock rate - for qla1240 and older, only */
        mb[0] = MBC_SET_CLOCK_RATE;
        mb[1] = 0x50;
        status |= qla1280_mailbox_command(ha, BIT_1 | BIT_0, &mb[0]);
#endif
        /* Firmware feature word. */
        mb[0] = MBC_SET_FIRMWARE_FEATURES;
        mask = BIT_5 | BIT_1 | BIT_0;
        mb[1] = le16_to_cpu(nv->firmware_feature.w) & (mask);
#if defined(CONFIG_IA64_GENERIC) || defined (CONFIG_IA64_SGI_SN2)
        if (ia64_platform_is("sn2")) {
                printk(KERN_INFO "scsi(%li): Enabling SN2 PCI DMA "
                       "workaround\n", ha->host_no);
                mb[1] |= BIT_9;
        }
#endif
        status |= qla1280_mailbox_command(ha, mask, &mb[0]);
 
        /* Retry count and delay. */
        mb[0] = MBC_SET_RETRY_COUNT;
        mb[1] = nv->bus[0].retry_count;
        mb[2] = nv->bus[0].retry_delay;
        mb[6] = nv->bus[1].retry_count;
        mb[7] = nv->bus[1].retry_delay;
        status |= qla1280_mailbox_command(ha, BIT_7 | BIT_6 | BIT_2 |
                                          BIT_1 | BIT_0, &mb[0]);
 
        /* ASYNC data setup time. */
        mb[0] = MBC_SET_ASYNC_DATA_SETUP;
        mb[1] = nv->bus[0].config_2.async_data_setup_time;
        mb[2] = nv->bus[1].config_2.async_data_setup_time;
        status |= qla1280_mailbox_command(ha, BIT_2 | BIT_1 | BIT_0, &mb[0]);
 
        /* Active negation states. */
        mb[0] = MBC_SET_ACTIVE_NEGATION;
        mb[1] = 0;
        if (nv->bus[0].config_2.req_ack_active_negation)
                mb[1] |= BIT_5;
        if (nv->bus[0].config_2.data_line_active_negation)
                mb[1] |= BIT_4;
        mb[2] = 0;
        if (nv->bus[1].config_2.req_ack_active_negation)
                mb[2] |= BIT_5;
        if (nv->bus[1].config_2.data_line_active_negation)
                mb[2] |= BIT_4;
        status |= qla1280_mailbox_command(ha, BIT_2 | BIT_1 | BIT_0, &mb[0]);
 
        mb[0] = MBC_SET_DATA_OVERRUN_RECOVERY;
        mb[1] = 2;      /* Reset SCSI bus and return all outstanding IO */
        status |= qla1280_mailbox_command(ha, BIT_1 | BIT_0, &mb[0]);
 
        /* thingy */
        mb[0] = MBC_SET_PCI_CONTROL;
        mb[1] = 2;      /* Data DMA Channel Burst Enable */
        mb[2] = 2;      /* Command DMA Channel Burst Enable */
        status |= qla1280_mailbox_command(ha, BIT_2 | BIT_1 | BIT_0, &mb[0]);
 
        /* Selection timeout. */
        mb[0] = MBC_SET_SELECTION_TIMEOUT;
        mb[1] = nv->bus[0].selection_timeout;
        mb[2] = nv->bus[1].selection_timeout;
        status |= qla1280_mailbox_command(ha, BIT_2 | BIT_1 | BIT_0, &mb[0]);
 
        for (bus = 0; bus < ha->ports; bus++) {
                /* SCSI Reset Disable. */
                ha->bus_settings[bus].disable_scsi_reset =
                        nv->bus[bus].config_1.scsi_reset_disable;
 
                /* Initiator ID. */
                ha->bus_settings[bus].id = nv->bus[bus].config_1.initiator_id;
                mb[0] = MBC_SET_INITIATOR_ID;
                mb[1] = bus ? ha->bus_settings[bus].id | BIT_7 :
                        ha->bus_settings[bus].id;
                status |= qla1280_mailbox_command(ha, BIT_1 | BIT_0, &mb[0]);
 
                /* Reset Delay. */
                ha->bus_settings[bus].bus_reset_delay =
                        nv->bus[bus].bus_reset_delay;
 
                /* Command queue depth per device. */
                ha->bus_settings[bus].hiwat = nv->bus[bus].max_queue_depth - 1;
 
                /* Set target parameters. */
                for (target = 0; target < MAX_TARGETS; target++) {
                        uint8_t mr = BIT_2 | BIT_1 | BIT_0;
 
                        /* Set Target Parameters. */
                        mb[0] = MBC_SET_TARGET_PARAMETERS;
                        mb[1] = (uint16_t) (bus ? target | BIT_7 : target);
                        mb[1] <<= 8;
                        /*
                         * Do not enable wide, sync, and ppr for the initial
                         * INQUIRY run. We enable this later if we determine
                         * the target actually supports it.
                         */
                        nv->bus[bus].target[target].parameter.f.
                                auto_request_sense = 1;
                        nv->bus[bus].target[target].parameter.f.
                                stop_queue_on_check = 0;
 
                        if (is1x160)
                                nv->bus[bus].target[target].ppr_1x160.
                                        flags.enable_ppr = 0;
                        /*
                         * No sync, wide, etc. while probing
                         */
                        mb[2] = (nv->bus[bus].target[target].parameter.c << 8)&
                                ~(TP_SYNC /*| TP_WIDE | TP_PPR*/);
 
                        if (is1x160)
                                mb[3] = nv->bus[bus].target[target].flags.flags1x160.sync_offset << 8;
                        else
                                mb[3] = nv->bus[bus].target[target].flags.flags1x80.sync_offset << 8;
                        mb[3] |= nv->bus[bus].target[target].sync_period;
                        mr |= BIT_3;
 
                        /*
                         * We don't want to enable ppr etc. before we have
                         * determined that the target actually supports it
                         */
#if 0
                        if (is1x160) {
                                mb[2] |= nv->bus[bus].target[target].ppr_1x160.flags.enable_ppr << 5;
 
                                mb[6] = nv->bus[bus].target[target].ppr_1x160.flags.ppr_options << 8;
                                mb[6] |= nv->bus[bus].target[target].ppr_1x160.flags.ppr_bus_width;
                                mr |= BIT_6;
                        }
#endif
 
                        status = qla1280_mailbox_command(ha, mr, &mb[0]);
 
                        /* Save Tag queuing enable flag. */
                        mb[0] = BIT_0 << target;
                        if (nv->bus[bus].target[target].parameter.f.tag_queuing)
                                ha->bus_settings[bus].qtag_enables |= mb[0];
 
                        /* Save Device enable flag. */
                        if (is1x160) {
                                if (nv->bus[bus].target[target].flags.flags1x160.device_enable)
                                        ha->bus_settings[bus].device_enables |= mb[0];
                                ha->bus_settings[bus].lun_disables |= 0;
                        } else {
                                if (nv->bus[bus].target[target].flags.flags1x80.device_enable)
                                        ha->bus_settings[bus].device_enables |= mb[0];
                                /* Save LUN disable flag. */
                                if (nv->bus[bus].target[target].flags.flags1x80.lun_disable)
                                ha->bus_settings[bus].lun_disables |= mb[0];
                        }
 
 
                        /* Set Device Queue Parameters. */
                        for (lun = 0; lun < MAX_LUNS; lun++) {
                                mb[0] = MBC_SET_DEVICE_QUEUE;
                                mb[1] = (uint16_t)(bus ? target | BIT_7 : target);
                                mb[1] = mb[1] << 8 | lun;
                                mb[2] = nv->bus[bus].max_queue_depth;
                                mb[3] = nv->bus[bus].target[target].execution_throttle;
                                status |= qla1280_mailbox_command(ha, 0x0f,
                                                                  &mb[0]);
                        }
                }
        }
 
        if (status)
                dprintk(2, "qla1280_nvram_config: **** FAILED ****\n");
 
        LEAVE("qla1280_nvram_config");
        return status;
}
 
/*
 * Get NVRAM data word
 *      Calculates word position in NVRAM and calls request routine to
 *      get the word from NVRAM.
 *
 * Input:
 *      ha      = adapter block pointer.
 *      address = NVRAM word address.
 *
 * Returns:
 *      data word.
 */
static uint16_t
qla1280_get_nvram_word(struct scsi_qla_host *ha, uint32_t address)
{
        uint32_t nv_cmd;
        uint16_t data;
 
        nv_cmd = address << 16;
        nv_cmd |= NV_READ_OP;
 
        data = le16_to_cpu(qla1280_nvram_request(ha, nv_cmd));
 
        dprintk(8, "qla1280_get_nvram_word: exiting normally NVRAM data = "
                "0x%x", data);
 
        return data;
}
 
/*
 * NVRAM request
 *      Sends read command to NVRAM and gets data from NVRAM.
 *
 * Input:
 *      ha     = adapter block pointer.
 *      nv_cmd = Bit 26     = start bit
 *               Bit 25, 24 = opcode
 *               Bit 23-16  = address
 *               Bit 15-0   = write data
 *
 * Returns:
 *      data word.
 */
static uint16_t
qla1280_nvram_request(struct scsi_qla_host *ha, uint32_t nv_cmd)
{
        struct device_reg *reg = ha->iobase;
        int cnt;
        uint16_t data = 0;
        uint16_t reg_data;
 
        /* Send command to NVRAM. */
 
        nv_cmd <<= 5;
        for (cnt = 0; cnt < 11; cnt++) {
                if (nv_cmd & BIT_31)
                        qla1280_nv_write(ha, NV_DATA_OUT);
                else
                        qla1280_nv_write(ha, 0);
                nv_cmd <<= 1;
        }
 
        /* Read data from NVRAM. */
 
        for (cnt = 0; cnt < 16; cnt++) {
                WRT_REG_WORD(&reg->nvram, (NV_SELECT | NV_CLOCK));
                RD_REG_WORD(&reg->id_l);        /* Flush PCI write */
                NVRAM_DELAY();
                data <<= 1;
                reg_data = RD_REG_WORD(&reg->nvram);
                if (reg_data & NV_DATA_IN)
                        data |= BIT_0;
                WRT_REG_WORD(&reg->nvram, NV_SELECT);
                RD_REG_WORD(&reg->id_l);        /* Flush PCI write */
                NVRAM_DELAY();
        }
 
        /* Deselect chip. */
 
        WRT_REG_WORD(&reg->nvram, NV_DESELECT);
        RD_REG_WORD(&reg->id_l);        /* Flush PCI write */
        NVRAM_DELAY();
 
        return data;
}
 
static void
qla1280_nv_write(struct scsi_qla_host *ha, uint16_t data)
{
        struct device_reg *reg = ha->iobase;
 
        WRT_REG_WORD(&reg->nvram, data | NV_SELECT);
        RD_REG_WORD(&reg->id_l);        /* Flush PCI write */
        NVRAM_DELAY();
        WRT_REG_WORD(&reg->nvram, data | NV_SELECT | NV_CLOCK);
        RD_REG_WORD(&reg->id_l);        /* Flush PCI write */
        NVRAM_DELAY();
        WRT_REG_WORD(&reg->nvram, data | NV_SELECT);
        RD_REG_WORD(&reg->id_l);        /* Flush PCI write */
        NVRAM_DELAY();
}
 
/*
 * Mailbox Command
 *      Issue mailbox command and waits for completion.
 *
 * Input:
 *      ha = adapter block pointer.
 *      mr = mailbox registers to load.
 *      mb = data pointer for mailbox registers.
 *
 * Output:
 *      mb[MAILBOX_REGISTER_COUNT] = returned mailbox data.
 *
 * Returns:
 *      0 = success
 */
static int
qla1280_mailbox_command(struct scsi_qla_host *ha, uint8_t mr, uint16_t *mb)
{
        struct device_reg *reg = ha->iobase;
#if 0
        struct srb *done_q_first = 0;
        struct srb *done_q_last = 0;
#endif
        int status = 0;
        int cnt;
        uint16_t *optr, *iptr;
        uint16_t data;
        DECLARE_COMPLETION(wait);
        struct timer_list timer;
 
        ENTER("qla1280_mailbox_command");
 
        ha->flags.mbox_busy = 1;
 
        if (ha->mailbox_wait) {
                printk(KERN_ERR "Warning mailbox wait already in use!\n");
        }
        ha->mailbox_wait = &wait;
 
        /*
         * We really should start out by verifying that the mailbox is
         * available before starting sending the command data
         */
        /* Load mailbox registers. */
        optr = (uint16_t *) &reg->mailbox0;
        iptr = mb;
        for (cnt = 0; cnt < MAILBOX_REGISTER_COUNT; cnt++) {
                if (mr & BIT_0) {
                        WRT_REG_WORD(optr, (*iptr));
                }
 
                mr >>= 1;
                optr++;
                iptr++;
        }
 
        /* Issue set host interrupt command. */
        ha->flags.mbox_busy = 0;
 
        /* set up a timer just in case we're really jammed */
        init_timer(&timer);
        timer.expires = jiffies + 20*HZ;
        timer.data = (unsigned long)ha;
        timer.function = qla1280_mailbox_timeout;
        add_timer(&timer);
 
        spin_unlock_irq(HOST_LOCK);
        WRT_REG_WORD(&reg->host_cmd, HC_SET_HOST_INT);
        data = qla1280_debounce_register(&reg->istatus);
 
        wait_for_completion(&wait);
        del_timer_sync(&timer);
 
        spin_lock_irq(HOST_LOCK);
 
        ha->mailbox_wait = NULL;
 
        /* Check for mailbox command timeout. */
        if (ha->mailbox_out[0] != MBS_CMD_CMP) {
                printk(KERN_WARNING "qla1280_mailbox_command: Command failed, "
                       "mailbox0 = 0x%04x, mailbox_out0 = 0x%04x, istatus = "
                       "0x%04x\n",
                       mb[0], ha->mailbox_out[0], RD_REG_WORD(&reg->istatus));
                printk(KERN_WARNING "m0 %04x, m1 %04x, m2 %04x, m3 %04x\n",
                       RD_REG_WORD(&reg->mailbox0), RD_REG_WORD(&reg->mailbox1),
                       RD_REG_WORD(&reg->mailbox2), RD_REG_WORD(&reg->mailbox3));
                printk(KERN_WARNING "m4 %04x, m5 %04x, m6 %04x, m7 %04x\n",
                       RD_REG_WORD(&reg->mailbox4), RD_REG_WORD(&reg->mailbox5),
                       RD_REG_WORD(&reg->mailbox6), RD_REG_WORD(&reg->mailbox7));
                status = 1;
        }
 
        /* Load return mailbox registers. */
        optr = mb;
        iptr = (uint16_t *) &ha->mailbox_out[0];
        mr = MAILBOX_REGISTER_COUNT;
        memcpy(optr, iptr, MAILBOX_REGISTER_COUNT * sizeof(uint16_t));
 
#if 0
        /* Go check for any response interrupts pending. */
        qla1280_isr(ha, &done_q_first, &done_q_last);
#endif
 
        if (ha->flags.reset_marker)
                qla1280_rst_aen(ha);
 
#if 0
        if (done_q_first)
                qla1280_done (ha, &done_q_first, &done_q_last);
#endif
 
        if (status)
                dprintk(2, "qla1280_mailbox_command: **** FAILED, mailbox0 = "
                        "0x%x ****\n", mb[0]);
 
        LEAVE("qla1280_mailbox_command");
        return status;
}
 
/*
 * qla1280_poll
 *      Polls ISP for interrupts.
 *
 * Input:
 *      ha = adapter block pointer.
 */
static void
qla1280_poll(struct scsi_qla_host *ha)
{
        struct device_reg *reg = ha->iobase;
        uint16_t data;
        struct srb *done_q_first = 0;
        struct srb *done_q_last = 0;
 
        /* ENTER("qla1280_poll"); */
 
        /* Check for pending interrupts. */
        data = RD_REG_WORD(&reg->istatus);
        if (data & RISC_INT)
                qla1280_isr(ha, &done_q_first, &done_q_last);
 
        if (!ha->flags.mbox_busy) {
                if (ha->flags.reset_marker)
                        qla1280_rst_aen(ha);
        }
 
        if (done_q_first)
                qla1280_done(ha, &done_q_first, &done_q_last);
 
        /* LEAVE("qla1280_poll"); */
}
 
/*
 * qla1280_bus_reset
 *      Issue SCSI bus reset.
 *
 * Input:
 *      ha  = adapter block pointer.
 *      bus = SCSI bus number.
 *
 * Returns:
 *      0 = success
 */
static int
qla1280_bus_reset(struct scsi_qla_host *ha, int bus)
{
        uint16_t mb[MAILBOX_REGISTER_COUNT];
        uint16_t reset_delay;
        int status;
 
        dprintk(3, "qla1280_bus_reset: entered\n");
 
        if (qla1280_verbose)
                printk(KERN_INFO "scsi(%li:%i): Resetting SCSI BUS\n",
                       ha->host_no, bus);
 
        reset_delay = ha->bus_settings[bus].bus_reset_delay;
        mb[0] = MBC_BUS_RESET;
        mb[1] = reset_delay;
        mb[2] = (uint16_t) bus;
        status = qla1280_mailbox_command(ha, BIT_2 | BIT_1 | BIT_0, &mb[0]);
 
        if (status) {
                if (ha->bus_settings[bus].failed_reset_count > 2)
                        ha->bus_settings[bus].scsi_bus_dead = 1;
                ha->bus_settings[bus].failed_reset_count++;
        } else {
                spin_unlock_irq(HOST_LOCK);
                schedule_timeout(reset_delay * HZ);
                spin_lock_irq(HOST_LOCK);
 
                ha->bus_settings[bus].scsi_bus_dead = 0;
                ha->bus_settings[bus].failed_reset_count = 0;
                ha->bus_settings[bus].reset_marker = 0;
                /* Issue marker command. */
                qla1280_marker(ha, bus, 0, 0, MK_SYNC_ALL);
        }
 
        /*
         * We should probably call qla1280_set_target_parameters()
         * here as well for all devices on the bus.
         */
 
        if (status)
                dprintk(2, "qla1280_bus_reset: **** FAILED ****\n");
        else
                dprintk(3, "qla1280_bus_reset: exiting normally\n");
 
        return status;
}
 
/*
 * qla1280_device_reset
 *      Issue bus device reset message to the target.
 *
 * Input:
 *      ha      = adapter block pointer.
 *      bus     = SCSI BUS number.
 *      target  = SCSI ID.
 *
 * Returns:
 *      0 = success
 */
static int
qla1280_device_reset(struct scsi_qla_host *ha, int bus, int target)
{
        uint16_t mb[MAILBOX_REGISTER_COUNT];
        int status;
 
        ENTER("qla1280_device_reset");
 
        mb[0] = MBC_ABORT_TARGET;
        mb[1] = (bus ? (target | BIT_7) : target) << 8;
        mb[2] = 1;
        status = qla1280_mailbox_command(ha, BIT_2 | BIT_1 | BIT_0, &mb[0]);
 
        /* Issue marker command. */
        qla1280_marker(ha, bus, target, 0, MK_SYNC_ID);
 
        if (status)
                dprintk(2, "qla1280_device_reset: **** FAILED ****\n");
 
        LEAVE("qla1280_device_reset");
        return status;
}
 
/*
 * qla1280_abort_device
 *      Issue an abort message to the device
 *
 * Input:
 *      ha     = adapter block pointer.
 *      bus    = SCSI BUS.
 *      target = SCSI ID.
 *      lun    = SCSI LUN.
 *
 * Returns:
 *      0 = success
 */
static int
qla1280_abort_device(struct scsi_qla_host *ha, int bus, int target, int lun)
{
        uint16_t mb[MAILBOX_REGISTER_COUNT];
        int status;
 
        ENTER("qla1280_abort_device");
 
        mb[0] = MBC_ABORT_DEVICE;
        mb[1] = (bus ? target | BIT_7 : target) << 8 | lun;
        status = qla1280_mailbox_command(ha, BIT_1 | BIT_0, &mb[0]);
 
        /* Issue marker command. */
        qla1280_marker(ha, bus, target, lun, MK_SYNC_ID_LUN);
 
        if (status)
                dprintk(2, "qla1280_abort_device: **** FAILED ****\n");
 
        LEAVE("qla1280_abort_device");
        return status;
}
 
/*
 * qla1280_abort_command
 *      Abort command aborts a specified IOCB.
 *
 * Input:
 *      ha = adapter block pointer.
 *      sp = SB structure pointer.
 *
 * Returns:
 *      0 = success
 */
static int
qla1280_abort_command(struct scsi_qla_host *ha, struct srb * sp, int handle)
{
        uint16_t mb[MAILBOX_REGISTER_COUNT];
        unsigned int bus, target, lun;
        int status;
 
        ENTER("qla1280_abort_command");
 
        bus = SCSI_BUS_32(sp->cmd);
        target = SCSI_TCN_32(sp->cmd);
        lun = SCSI_LUN_32(sp->cmd);
 
        sp->flags |= SRB_ABORT_PENDING;
 
        mb[0] = MBC_ABORT_COMMAND;
        mb[1] = (bus ? target | BIT_7 : target) << 8 | lun;
        mb[2] = handle >> 16;
        mb[3] = handle & 0xffff;
        status = qla1280_mailbox_command(ha, 0x0f, &mb[0]);
 
        if (status) {
                dprintk(2, "qla1280_abort_command: **** FAILED ****\n");
                sp->flags &= ~SRB_ABORT_PENDING;
        }
 
 
        LEAVE("qla1280_abort_command");
        return status;
}
 
/*
 * qla1280_reset_adapter
 *      Reset adapter.
 *
 * Input:
 *      ha = adapter block pointer.
 */
static void
qla1280_reset_adapter(struct scsi_qla_host *ha)
{
        struct device_reg *reg = ha->iobase;
 
        ENTER("qla1280_reset_adapter");
 
        /* Disable ISP chip */
        ha->flags.online = 0;
        WRT_REG_WORD(&reg->ictrl, ISP_RESET);
        WRT_REG_WORD(&reg->host_cmd,
                     HC_RESET_RISC | HC_RELEASE_RISC | HC_DISABLE_BIOS);
        RD_REG_WORD(&reg->id_l);        /* Flush PCI write */
 
        LEAVE("qla1280_reset_adapter");
}
 
/*
 *  Issue marker command.
 *      Function issues marker IOCB.
 *
 * Input:
 *      ha   = adapter block pointer.
 *      bus  = SCSI BUS number
 *      id   = SCSI ID
 *      lun  = SCSI LUN
 *      type = marker modifier
 */
static void
qla1280_marker(struct scsi_qla_host *ha, int bus, int id, int lun, u8 type)
{
        struct mrk_entry *pkt;
 
        ENTER("qla1280_marker");
 
        /* Get request packet. */
        if ((pkt = (struct mrk_entry *) qla1280_req_pkt(ha))) {
                pkt->entry_type = MARKER_TYPE;
                pkt->lun = (uint8_t) lun;
                pkt->target = (uint8_t) (bus ? (id | BIT_7) : id);
                pkt->modifier = type;
                pkt->entry_status = 0;
 
                /* Issue command to ISP */
                qla1280_isp_cmd(ha);
        }
 
        LEAVE("qla1280_marker");
}
 
 
/*
 * qla1280_64bit_start_scsi
 *      The start SCSI is responsible for building request packets on
 *      request ring and modifying ISP input pointer.
 *
 * Input:
 *      ha = adapter block pointer.
 *      sp = SB structure pointer.
 *
 * Returns:
 *      0 = success, was able to issue command.
 */
static int
qla1280_64bit_start_scsi(struct scsi_qla_host *ha, struct srb * sp)
{
        struct device_reg *reg = ha->iobase;
        Scsi_Cmnd *cmd = sp->cmd;
        cmd_a64_entry_t *pkt;
        struct scatterlist *sg = NULL;
        u32 *dword_ptr;
        dma_addr_t dma_handle;
        int status = 0;
        int cnt;
        int req_cnt;
        u16 seg_cnt;
 
        ENTER("qla1280_64bit_start_scsi:");
 
        /* Calculate number of entries and segments required. */
        req_cnt = 1;
        if (cmd->use_sg) {
                sg = (struct scatterlist *) cmd->request_buffer;
                seg_cnt = pci_map_sg(ha->pdev, sg, cmd->use_sg,
                                     scsi_to_pci_dma_dir(cmd->sc_data_direction));
 
                if (seg_cnt > 2) {
                        req_cnt += (seg_cnt - 2) / 5;
                        if ((seg_cnt - 2) % 5)
                                req_cnt++;
                }
        } else if (cmd->request_bufflen) {      /* If data transfer. */
                seg_cnt = 1;
        } else {
                seg_cnt = 0;
        }
 
        if ((req_cnt + 2) >= ha->req_q_cnt) {
                /* Calculate number of free request entries. */
                cnt = RD_REG_WORD(&reg->mailbox4);
                if (ha->req_ring_index < cnt)
                        ha->req_q_cnt = cnt - ha->req_ring_index;
                else
                        ha->req_q_cnt =
                                REQUEST_ENTRY_CNT - (ha->req_ring_index - cnt);
        }
 
        /* If room for request in request ring. */
        if ((req_cnt + 2) >= ha->req_q_cnt) {
                status = 1;
                dprintk(2, "qla1280_64bit_start_scsi: in-ptr=0x%x  req_q_cnt="
                        "0x%xreq_cnt=0x%x", ha->req_ring_index, ha->req_q_cnt,
                        req_cnt);
                goto out;
        }
 
        /* Check for room in outstanding command list. */
        for (cnt = 0; cnt < MAX_OUTSTANDING_COMMANDS &&
                     ha->outstanding_cmds[cnt] != 0; cnt++);
 
        if (cnt >= MAX_OUTSTANDING_COMMANDS) {
                status = 1;
                dprintk(2, "qla1280_64bit_start_scsi: NO ROOM IN "
                        "OUTSTANDING ARRAY, req_q_cnt=0x%x", ha->req_q_cnt);
                goto out;
        }
 
        ha->outstanding_cmds[cnt] = sp;
        ha->req_q_cnt -= req_cnt;
        CMD_HANDLE(sp->cmd) = (unsigned char *)(unsigned long)(cnt + 1);
 
        dprintk(2, "64bit_start: cmd=%p sp=%p CDB=%xm, handle %lx\n", cmd, sp,
                cmd->cmnd[0], (long)CMD_HANDLE(sp->cmd));
        dprintk(2, "             bus %i, target %i, lun %i\n",
                SCSI_BUS_32(cmd), SCSI_TCN_32(cmd), SCSI_LUN_32(cmd));
        qla1280_dump_buffer(2, cmd->cmnd, MAX_COMMAND_SIZE);
 
        /*
         * Build command packet.
         */
        pkt = (cmd_a64_entry_t *) ha->request_ring_ptr;
 
        pkt->entry_type = COMMAND_A64_TYPE;
        pkt->entry_count = (uint8_t) req_cnt;
        pkt->sys_define = (uint8_t) ha->req_ring_index;
        pkt->entry_status = 0;
        pkt->handle = cpu_to_le32(cnt);
 
        /* Zero out remaining portion of packet. */
        memset(((char *)pkt + 8), 0, (REQUEST_ENTRY_SIZE - 8));
 
        /* Set ISP command timeout. */
        pkt->timeout = cpu_to_le16(30);
 
        /* Set device target ID and LUN */
        pkt->lun = SCSI_LUN_32(cmd);
        pkt->target = SCSI_BUS_32(cmd) ?
                (SCSI_TCN_32(cmd) | BIT_7) : SCSI_TCN_32(cmd);
 
        /* Enable simple tag queuing if device supports it. */
        if (DEV_SIMPLE_TAGS(cmd->device))
                pkt->control_flags |= cpu_to_le16(BIT_3);
 
        /* Load SCSI command packet. */
        pkt->cdb_len = cpu_to_le16(CMD_CDBLEN(cmd));
        memcpy(pkt->scsi_cdb, &(CMD_CDBP(cmd)), CMD_CDBLEN(cmd));
        /* dprintk(1, "Build packet for command[0]=0x%x\n",pkt->scsi_cdb[0]); */
 
        /* Set transfer direction. */
        sp->dir = qla1280_data_direction(cmd);
        pkt->control_flags |= cpu_to_le16(sp->dir);
 
        /* Set total data segment count. */
        pkt->dseg_count = cpu_to_le16(seg_cnt);
 
        /*
         * Load data segments.
         */
        if (seg_cnt) {  /* If data transfer. */
                /* Setup packet address segment pointer. */
                dword_ptr = (u32 *)&pkt->dseg_0_address;
 
                if (cmd->use_sg) {      /* If scatter gather */
                        /* Load command entry data segments. */
                        for (cnt = 0; cnt < 2 && seg_cnt; cnt++, seg_cnt--) {
                                dma_handle = sg_dma_address(sg);
#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
                                if (ha->flags.use_pci_vchannel)
                                        sn_pci_set_vchan(ha->pdev, &dma_handle,
                                                         SCSI_BUS_32(cmd));
#endif
                                *dword_ptr++ =
                                        cpu_to_le32(pci_dma_lo32(dma_handle));
                                *dword_ptr++ =
                                        cpu_to_le32(pci_dma_hi32(dma_handle));
                                *dword_ptr++ = cpu_to_le32(sg_dma_len(sg));
                                sg++;
                                dprintk(3, "S/G Segment phys_addr=%x %x, len=0x%x\n",
                                        cpu_to_le32(pci_dma_hi32(dma_handle)),
                                        cpu_to_le32(pci_dma_lo32(dma_handle)),
                                        cpu_to_le32(sg_dma_len(sg)));
                        }
                        dprintk(5, "qla1280_64bit_start_scsi: Scatter/gather "
                                "command packet data - b %i, t %i, l %i \n",
                                SCSI_BUS_32(cmd), SCSI_TCN_32(cmd),
                                SCSI_LUN_32(cmd));
                        qla1280_dump_buffer(5, (char *)pkt,
                                            REQUEST_ENTRY_SIZE);
 
                        /*
                         * Build continuation packets.
                         */
                        dprintk(3, "S/G Building Continuation...seg_cnt=0x%x "
                                "remains\n", seg_cnt);
 
                        while (seg_cnt > 0) {
                                /* Adjust ring index. */
                                ha->req_ring_index++;
                                if (ha->req_ring_index == REQUEST_ENTRY_CNT) {
                                        ha->req_ring_index = 0;
                                        ha->request_ring_ptr =
                                                ha->request_ring;
                                } else
                                                ha->request_ring_ptr++;
 
                                pkt = (cmd_a64_entry_t *)ha->request_ring_ptr;
 
                                /* Zero out packet. */
                                memset(pkt, 0, REQUEST_ENTRY_SIZE);
 
                                /* Load packet defaults. */
                                ((struct cont_a64_entry *) pkt)->entry_type =
                                        CONTINUE_A64_TYPE;
                                ((struct cont_a64_entry *) pkt)->entry_count = 1;
                                ((struct cont_a64_entry *) pkt)->sys_define =
                                        (uint8_t)ha->req_ring_index;
                                /* Setup packet address segment pointer. */
                                dword_ptr =
                                        (u32 *)&((struct cont_a64_entry *) pkt)->dseg_0_address;
 
                                /* Load continuation entry data segments. */
                                for (cnt = 0; cnt < 5 && seg_cnt;
                                     cnt++, seg_cnt--) {
                                        dma_handle = sg_dma_address(sg);
#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
                                if (ha->flags.use_pci_vchannel)
                                        sn_pci_set_vchan(ha->pdev, &dma_handle,
                                                         SCSI_BUS_32(cmd));
#endif
                                        *dword_ptr++ =
                                                cpu_to_le32(pci_dma_lo32(dma_handle));
                                        *dword_ptr++ =
                                                cpu_to_le32(pci_dma_hi32(dma_handle));
                                        *dword_ptr++ =
                                                cpu_to_le32(sg_dma_len(sg));
                                        dprintk(3, "S/G Segment Cont. phys_addr=%x %x, len=0x%x\n",
                                                cpu_to_le32(pci_dma_hi32(dma_handle)),
                                                cpu_to_le32(pci_dma_lo32(dma_handle)),
                                                cpu_to_le32(sg_dma_len(sg)));
                                        sg++;
                                }
                                dprintk(5, "qla1280_64bit_start_scsi: "
                                        "continuation packet data - b %i, t "
                                        "%i, l %i \n", SCSI_BUS_32(cmd),
                                        SCSI_TCN_32(cmd), SCSI_LUN_32(cmd));
                                qla1280_dump_buffer(5, (char *)pkt,
                                                    REQUEST_ENTRY_SIZE);
                        }
                } else {        /* No scatter gather data transfer */
                        struct page *page = virt_to_page(cmd->request_buffer);
                        unsigned long off = (unsigned long)cmd->request_buffer & ~PAGE_MASK;
 
                        dma_handle = pci_map_page(ha->pdev, page, off,
                                                  cmd->request_bufflen,
                                                  scsi_to_pci_dma_dir(cmd->sc_data_direction));
 
                        /* save dma_handle for pci_unmap_page */
                        sp->saved_dma_handle = dma_handle;
#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
                        if (ha->flags.use_pci_vchannel)
                                sn_pci_set_vchan(ha->pdev, &dma_handle,
                                                 SCSI_BUS_32(cmd));
#endif
                        *dword_ptr++ = cpu_to_le32(pci_dma_lo32(dma_handle));
                        *dword_ptr++ = cpu_to_le32(pci_dma_hi32(dma_handle));
                        *dword_ptr = (uint32_t)cmd->request_bufflen;
 
                        dprintk(5, "qla1280_64bit_start_scsi: No scatter/"
                                "gather command packet data - b %i, t %i, "
                                "l %i \n", SCSI_BUS_32(cmd), SCSI_TCN_32(cmd),
                                SCSI_LUN_32(cmd));
                        qla1280_dump_buffer(5, (char *)pkt,
                                            REQUEST_ENTRY_SIZE);
                }
        } else {        /* No data transfer */
                dword_ptr = (uint32_t *)(pkt + 1);
                *dword_ptr++ = 0;
                *dword_ptr++ = 0;
                *dword_ptr = 0;
                dprintk(5, "qla1280_64bit_start_scsi: No data, command "
                        "packet data - b %i, t %i, l %i \n",
                        SCSI_BUS_32(cmd), SCSI_TCN_32(cmd), SCSI_LUN_32(cmd));
                qla1280_dump_buffer(5, (char *)pkt, REQUEST_ENTRY_SIZE);
        }
        /* Adjust ring index. */
        ha->req_ring_index++;
        if (ha->req_ring_index == REQUEST_ENTRY_CNT) {
                ha->req_ring_index = 0;
                ha->request_ring_ptr = ha->request_ring;
        } else
                ha->request_ring_ptr++;
 
        /* Set chip new ring index. */
        dprintk(2,
                "qla1280_64bit_start_scsi: Wakeup RISC for pending command\n");
        sp->flags |= SRB_SENT;
        ha->actthreads++;
        WRT_REG_WORD(&reg->mailbox4, ha->req_ring_index);
 
 out:
        if (status)
                dprintk(2, "qla1280_64bit_start_scsi: **** FAILED ****\n");
        else
                dprintk(3, "qla1280_64bit_start_scsi: exiting normally\n");
 
        return status;
}
 
 
/*
 * qla1280_32bit_start_scsi
 *      The start SCSI is responsible for building request packets on
 *      request ring and modifying ISP input pointer.
 *
 *      The Qlogic firmware interface allows every queue slot to have a SCSI
 *      command and up to 4 scatter/gather (SG) entries.  If we need more
 *      than 4 SG entries, then continuation entries are used that can
 *      hold another 7 entries each.  The start routine determines if there
 *      is eought empty slots then build the combination of requests to
 *      fulfill the OS request.
 *
 * Input:
 *      ha = adapter block pointer.
 *      sp = SCSI Request Block structure pointer.
 *
 * Returns:
 *      0 = success, was able to issue command.
 */
static int
qla1280_32bit_start_scsi(struct scsi_qla_host *ha, struct srb * sp)
{
        struct device_reg *reg = ha->iobase;
        Scsi_Cmnd *cmd = sp->cmd;
        struct cmd_entry *pkt;
        struct scatterlist *sg = NULL;
        uint32_t *dword_ptr;
        int status = 0;
        int cnt;
        int req_cnt;
        uint16_t seg_cnt;
        dma_addr_t dma_handle;
 
        ENTER("qla1280_32bit_start_scsi");
 
        dprintk(1, "32bit_start: cmd=%p sp=%p CDB=%x\n", cmd, sp,
                cmd->cmnd[0]);
 
        /* Calculate number of entries and segments required. */
        req_cnt = 1;
        if (cmd->use_sg) {
                /*
                 * We must build an SG list in adapter format, as the kernel's
                 * SG list cannot be used directly because of data field size
                 * (__alpha__) differences and the kernel SG list uses virtual
                 * addresses where we need physical addresses.
                 */
                sg = (struct scatterlist *) cmd->request_buffer;
                seg_cnt = pci_map_sg(ha->pdev, sg, cmd->use_sg,
                                     scsi_to_pci_dma_dir(cmd->sc_data_direction));
 
                /*
                 * if greater than four sg entries then we need to allocate
                 * continuation entries
                 */
                if (seg_cnt > 4) {
                        req_cnt += (seg_cnt - 4) / 7;
                        if ((seg_cnt - 4) % 7)
                                req_cnt++;
                }
                dprintk(3, "S/G Transfer cmd=%p seg_cnt=0x%x, req_cnt=%x\n",
                        cmd, seg_cnt, req_cnt);
        } else if (cmd->request_bufflen) {      /* If data transfer. */
                dprintk(3, "No S/G transfer t=%x cmd=%p len=%x CDB=%x\n",
                        SCSI_TCN_32(cmd), cmd, cmd->request_bufflen,
                        cmd->cmnd[0]);
                seg_cnt = 1;
        } else {
                /* dprintk(1, "No data transfer \n"); */
                seg_cnt = 0;
        }
 
        if ((req_cnt + 2) >= ha->req_q_cnt) {
                /* Calculate number of free request entries. */
                cnt = RD_REG_WORD(&reg->mailbox4);
                if (ha->req_ring_index < cnt)
                        ha->req_q_cnt = cnt - ha->req_ring_index;
                else
                        ha->req_q_cnt =
                                REQUEST_ENTRY_CNT - (ha->req_ring_index - cnt);
        }
 
        dprintk(3, "Number of free entries=(%d) seg_cnt=0x%x\n",
                ha->req_q_cnt, seg_cnt);
        /* If room for request in request ring. */
        if ((req_cnt + 2) >= ha->req_q_cnt) {
                status = 1;
                dprintk(2, "qla1280_32bit_start_scsi: in-ptr=0x%x, "
                        "req_q_cnt=0x%x, req_cnt=0x%x", ha->req_ring_index,
                        ha->req_q_cnt, req_cnt);
                goto out;
        }
 
        /* Check for empty slot in outstanding command list. */
        for (cnt = 0; cnt < MAX_OUTSTANDING_COMMANDS &&
                     (ha->outstanding_cmds[cnt] != 0); cnt++) ;
 
        if (cnt >= MAX_OUTSTANDING_COMMANDS) {
                status = 1;
                dprintk(2, "qla1280_32bit_start_scsi: NO ROOM IN OUTSTANDING "
                        "ARRAY, req_q_cnt=0x%x\n", ha->req_q_cnt);
                goto out;
        }
 
        CMD_HANDLE(sp->cmd) = (unsigned char *) (unsigned long)(cnt + 1);
        ha->outstanding_cmds[cnt] = sp;
        ha->req_q_cnt -= req_cnt;
 
        /*
         * Build command packet.
         */
        pkt = (struct cmd_entry *) ha->request_ring_ptr;
 
        pkt->entry_type = COMMAND_TYPE;
        pkt->entry_count = (uint8_t) req_cnt;
        pkt->sys_define = (uint8_t) ha->req_ring_index;
        pkt->entry_status = 0;
        pkt->handle = cpu_to_le32(cnt);
 
        /* Zero out remaining portion of packet. */
        memset(((char *)pkt + 8), 0, (REQUEST_ENTRY_SIZE - 8));
 
        /* Set ISP command timeout. */
        pkt->timeout = cpu_to_le16(30);
 
        /* Set device target ID and LUN */
        pkt->lun = SCSI_LUN_32(cmd);
        pkt->target = SCSI_BUS_32(cmd) ?
                (SCSI_TCN_32(cmd) | BIT_7) : SCSI_TCN_32(cmd);
 
        /* Enable simple tag queuing if device supports it. */
        if (DEV_SIMPLE_TAGS(cmd->device))
                pkt->control_flags |= cpu_to_le16(BIT_3);
 
        /* Load SCSI command packet. */
        pkt->cdb_len = cpu_to_le16(CMD_CDBLEN(cmd));
        memcpy(pkt->scsi_cdb, &(CMD_CDBP(cmd)), CMD_CDBLEN(cmd));
 
        /*dprintk(1, "Build packet for command[0]=0x%x\n",pkt->scsi_cdb[0]); */
        /* Set transfer direction. */
        sp->dir = qla1280_data_direction(cmd);
        pkt->control_flags |= cpu_to_le16(sp->dir);
 
        /* Set total data segment count. */
        pkt->dseg_count = cpu_to_le16(seg_cnt);
 
        /*
         * Load data segments.
         */
        if (seg_cnt) {
                /* Setup packet address segment pointer. */
                dword_ptr = &pkt->dseg_0_address;
 
                if (cmd->use_sg) {      /* If scatter gather */
                        dprintk(3, "Building S/G data segments..\n");
                        qla1280_dump_buffer(1, (char *)sg, 4 * 16);
 
                        /* Load command entry data segments. */
                        for (cnt = 0; cnt < 4 && seg_cnt; cnt++, seg_cnt--) {
                                *dword_ptr++ =
                                        cpu_to_le32(pci_dma_lo32(sg_dma_address(sg)));
                                *dword_ptr++ =
                                        cpu_to_le32(sg_dma_len(sg));
                                dprintk(3, "S/G Segment phys_addr=0x%lx, len=0x%x\n",
                                        (pci_dma_lo32(sg_dma_address(sg))),
                                        (sg_dma_len(sg)));
                                sg++;
                        }
                        /*
                         * Build continuation packets.
                         */
                        dprintk(3, "S/G Building Continuation"
                                "...seg_cnt=0x%x remains\n", seg_cnt);
                        while (seg_cnt > 0) {
                                /* Adjust ring index. */
                                ha->req_ring_index++;
                                if (ha->req_ring_index == REQUEST_ENTRY_CNT) {
                                        ha->req_ring_index = 0;
                                        ha->request_ring_ptr =
                                                ha->request_ring;
                                } else
                                        ha->request_ring_ptr++;
 
                                pkt = (struct cmd_entry *)ha->request_ring_ptr;
 
                                /* Zero out packet. */
                                memset(pkt, 0, REQUEST_ENTRY_SIZE);
 
                                /* Load packet defaults. */
                                ((struct cont_entry *) pkt)->
                                        entry_type = CONTINUE_TYPE;
                                ((struct cont_entry *) pkt)->entry_count = 1;
 
                                ((struct cont_entry *) pkt)->sys_define =
                                        (uint8_t) ha->req_ring_index;
 
                                /* Setup packet address segment pointer. */
                                dword_ptr =
                                        &((struct cont_entry *) pkt)->dseg_0_address;
 
                                /* Load continuation entry data segments. */
                                for (cnt = 0; cnt < 7 && seg_cnt;
                                     cnt++, seg_cnt--) {
                                        *dword_ptr++ =
                                                cpu_to_le32(pci_dma_lo32(sg_dma_address(sg)));
                                        *dword_ptr++ =
                                                cpu_to_le32(sg_dma_len(sg));
                                        dprintk(1,
                                                "S/G Segment Cont. phys_addr=0x%x, "
                                                "len=0x%x\n",
                                                cpu_to_le32(pci_dma_lo32(sg_dma_address(sg))),
                                                cpu_to_le32(sg_dma_len(sg)));
                                        sg++;
                                }
                                dprintk(5, "qla1280_32bit_start_scsi: "
                                        "continuation packet data - "
                                        "scsi(%i:%i:%i)\n", SCSI_BUS_32(cmd),
                                        SCSI_TCN_32(cmd), SCSI_LUN_32(cmd));
                                qla1280_dump_buffer(5, (char *)pkt,
                                                    REQUEST_ENTRY_SIZE);
                        }
                } else {        /* No S/G data transfer */
                        struct page *page = virt_to_page(cmd->request_buffer);
                        unsigned long off = (unsigned long)cmd->request_buffer & ~PAGE_MASK;
                        dma_handle = pci_map_page(ha->pdev, page, off,
                                                  cmd->request_bufflen,
                                                  scsi_to_pci_dma_dir(cmd->sc_data_direction));
                        sp->saved_dma_handle = dma_handle;
 
                        *dword_ptr++ = cpu_to_le32(pci_dma_lo32(dma_handle));
                        *dword_ptr = cpu_to_le32(cmd->request_bufflen);
                }
        } else {        /* No data transfer at all */
                dword_ptr = (uint32_t *)(pkt + 1);
                *dword_ptr++ = 0;
                *dword_ptr = 0;
                dprintk(5, "qla1280_32bit_start_scsi: No data, command "
                        "packet data - \n");
                qla1280_dump_buffer(5, (char *)pkt, REQUEST_ENTRY_SIZE);
        }
        dprintk(5, "qla1280_32bit_start_scsi: First IOCB block:\n");
        qla1280_dump_buffer(5, (char *)ha->request_ring_ptr,
                            REQUEST_ENTRY_SIZE);
 
        /* Adjust ring index. */
        ha->req_ring_index++;
        if (ha->req_ring_index == REQUEST_ENTRY_CNT) {
                ha->req_ring_index = 0;
                ha->request_ring_ptr = ha->request_ring;
        } else
                ha->request_ring_ptr++;
 
        /* Set chip new ring index. */
        dprintk(2, "qla1280_32bit_start_scsi: Wakeup RISC "
                "for pending command\n");
        sp->flags |= SRB_SENT;
        ha->actthreads++;
        WRT_REG_WORD(&reg->mailbox4, ha->req_ring_index);
 
out:
        if (status)
                dprintk(2, "qla1280_32bit_start_scsi: **** FAILED ****\n");
 
        LEAVE("qla1280_32bit_start_scsi");
 
        return status;
}
 
/*
 * qla1280_req_pkt
 *      Function is responsible for locking ring and
 *      getting a zeroed out request packet.
 *
 * Input:
 *      ha  = adapter block pointer.
 *
 * Returns:
 *      0 = failed to get slot.
 */
static request_t *
qla1280_req_pkt(struct scsi_qla_host *ha)
{
        struct device_reg *reg = ha->iobase;
        request_t *pkt = 0;
        int cnt;
        uint32_t timer;
 
        ENTER("qla1280_req_pkt");
 
        /*
         * This can be called from interrupt context, damn it!!!
         */
        /* Wait for 30 seconds for slot. */
        for (timer = 15000000; timer; timer--) {
                if (ha->req_q_cnt > 0) {
                        /* Calculate number of free request entries. */
                        cnt = RD_REG_WORD(&reg->mailbox4);
                        if (ha->req_ring_index < cnt)
                                ha->req_q_cnt = cnt - ha->req_ring_index;
                        else
                                ha->req_q_cnt =
                                        REQUEST_ENTRY_CNT - (ha->req_ring_index - cnt);
                }
 
                /* Found empty request ring slot? */
                if (ha->req_q_cnt > 0) {
                        ha->req_q_cnt--;
                        pkt = ha->request_ring_ptr;
 
                        /* Zero out packet. */
                        memset(pkt, 0, REQUEST_ENTRY_SIZE);
 
                        /*
                         * How can this be right when we have a ring
                         * size of 512???
                         */
                        /* Set system defined field. */
                        pkt->sys_define = (uint8_t) ha->req_ring_index;
 
                        /* Set entry count. */
                        pkt->entry_count = 1;
 
                        break;
                }
 
                udelay(2);      /* 10 */
 
                /* Check for pending interrupts. */
                qla1280_poll(ha);
        }
 
        if (!pkt)
                dprintk(2, "qla1280_req_pkt: **** FAILED ****\n");
        else
                dprintk(3, "qla1280_req_pkt: exiting normally\n");
 
        return pkt;
}
 
/*
 * qla1280_isp_cmd
 *      Function is responsible for modifying ISP input pointer.
 *      Releases ring lock.
 *
 * Input:
 *      ha  = adapter block pointer.
 */
static void
qla1280_isp_cmd(struct scsi_qla_host *ha)
{
        struct device_reg *reg = ha->iobase;
 
        ENTER("qla1280_isp_cmd");
 
        dprintk(5, "qla1280_isp_cmd: IOCB data:\n");
        qla1280_dump_buffer(5, (char *)ha->request_ring_ptr,
                            REQUEST_ENTRY_SIZE);
 
        /* Adjust ring index. */
        ha->req_ring_index++;
        if (ha->req_ring_index == REQUEST_ENTRY_CNT) {
                ha->req_ring_index = 0;
                ha->request_ring_ptr = ha->request_ring;
        } else
                ha->request_ring_ptr++;
 
        /* Set chip new ring index. */
        WRT_REG_WORD(&reg->mailbox4, ha->req_ring_index);
 
        LEAVE("qla1280_isp_cmd");
}
 
#if QL1280_LUN_SUPPORT
/*
 * qla1280_enable_lun
 *      Issue enable LUN entry IOCB.
 *
 * Input:
 *      ha  = adapter block pointer.
 *      bus = SCSI BUS number.
 *      lun  = LUN number.
 */
static void
qla1280_enable_lun(struct scsi_qla_host *ha, int bus, int lun)
{
        struct elun_entry *pkt;
 
        ENTER("qla1280_enable_lun");
 
        /* Get request packet. */
        /*
          if (pkt = (struct elun_entry *)qla1280_req_pkt(ha))
          {
          pkt->entry_type = ENABLE_LUN_TYPE;
          pkt->lun = cpu_to_le16(bus ? lun | BIT_15 : lun);
          pkt->command_count = 32;
          pkt->immed_notify_count = 1;
          pkt->group_6_length = MAX_CMDSZ;
          pkt->group_7_length = MAX_CMDSZ;
          pkt->timeout = cpu_to_le16(0x30);
 
          qla1280_isp_cmd(ha);
          }
        */
        pkt = (struct elun_entry *) 1;
 
        if (!pkt)
                dprintk(2, "qla1280_enable_lun: **** FAILED ****\n");
        else
                dprintk(3, "qla1280_enable_lun: exiting normally\n");
}
#endif
 
 
/****************************************************************************/
/*                        Interrupt Service Routine.                        */
/****************************************************************************/
 
/****************************************************************************
 *  qla1280_isr
 *      Calls I/O done on command completion.
 *
 * Input:
 *      ha           = adapter block pointer.
 *      done_q_first = done queue first pointer.
 *      done_q_last  = done queue last pointer.
 ****************************************************************************/
static void
qla1280_isr(struct scsi_qla_host *ha, struct srb ** done_q_first,
            struct srb ** done_q_last)
{
        struct device_reg *reg = ha->iobase;
        struct response *pkt;
        struct srb *sp = 0;
        uint16_t mailbox[MAILBOX_REGISTER_COUNT];
        uint16_t *wptr;
        uint32_t index;
        u16 istatus;
 
        ENTER("qla1280_isr");
 
        istatus = RD_REG_WORD(&reg->istatus);
        if (!(istatus & (RISC_INT | PCI_INT)))
                return;
 
        /* Save mailbox register 5 */
        mailbox[5] = RD_REG_WORD(&reg->mailbox5);
 
        /* Check for mailbox interrupt. */
 
        mailbox[0] = RD_REG_WORD(&reg->semaphore);
 
        if (mailbox[0] & BIT_0) {
                /* Get mailbox data. */
                /* dprintk(1, "qla1280_isr: In Get mailbox data \n"); */
 
                wptr = &mailbox[0];
                *wptr++ = RD_REG_WORD(&reg->mailbox0);
                *wptr++ = RD_REG_WORD(&reg->mailbox1);
                *wptr = RD_REG_WORD(&reg->mailbox2);
                if (mailbox[0] != MBA_SCSI_COMPLETION) {
                        wptr++;
                        *wptr++ = RD_REG_WORD(&reg->mailbox3);
                        *wptr++ = RD_REG_WORD(&reg->mailbox4);
                        wptr++;
                        *wptr++ = RD_REG_WORD(&reg->mailbox6);
                        *wptr = RD_REG_WORD(&reg->mailbox7);
                }
 
                /* Release mailbox registers. */
 
                WRT_REG_WORD(&reg->semaphore, 0);
                WRT_REG_WORD(&reg->host_cmd, HC_CLR_RISC_INT);
 
                dprintk(5, "qla1280_isr: mailbox interrupt mailbox[0] = 0x%x",
                        mailbox[0]);
 
                /* Handle asynchronous event */
                switch (mailbox[0]) {
                case MBA_SCSI_COMPLETION:       /* Response completion */
                        dprintk(5, "qla1280_isr: mailbox SCSI response "
                                "completion\n");
 
                        if (ha->flags.online) {
                                /* Get outstanding command index. */
                                index = mailbox[2] << 16 | mailbox[1];
 
                                /* Validate handle. */
                                if (index < MAX_OUTSTANDING_COMMANDS)
                                        sp = ha->outstanding_cmds[index];
                                else
                                        sp = 0;
 
                                if (sp) {
                                        /* Free outstanding command slot. */
                                        ha->outstanding_cmds[index] = 0;
 
                                        /* Save ISP completion status */
                                        CMD_RESULT(sp->cmd) = 0;
 
                                        /* Place block on done queue */
                                        sp->s_next = NULL;
                                        sp->s_prev = *done_q_last;
                                        if (!*done_q_first)
                                                *done_q_first = sp;
                                        else
                                                (*done_q_last)->s_next = sp;
                                        *done_q_last = sp;
                                } else {
                                        /*
                                         * If we get here we have a real problem!
                                         */
                                        printk(KERN_WARNING
                                               "qla1280: ISP invalid handle");
                                }
                        }
                        break;
 
                case MBA_BUS_RESET:     /* SCSI Bus Reset */
                        ha->flags.reset_marker = 1;
                        index = mailbox[6] & BIT_0;
                        ha->bus_settings[index].reset_marker = 1;
 
                        printk(KERN_DEBUG "qla1280_isr(): index %i "
                               "asynchronous BUS_RESET\n", index);
                        break;
 
                case MBA_SYSTEM_ERR:    /* System Error */
                        printk(KERN_WARNING
                               "qla1280: ISP System Error - mbx1=%xh, mbx2="
                               "%xh, mbx3=%xh\n", mailbox[1], mailbox[2],
                               mailbox[3]);
                        break;
 
                case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
                        printk(KERN_WARNING
                               "qla1280: ISP Request Transfer Error\n");
                        break;
 
                case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
                        printk(KERN_WARNING
                               "qla1280: ISP Response Transfer Error\n");
                        break;
 
                case MBA_WAKEUP_THRES:  /* Request Queue Wake-up */
                        dprintk(2, "qla1280_isr: asynchronous WAKEUP_THRES\n");
                        break;
 
                case MBA_TIMEOUT_RESET: /* Execution Timeout Reset */
                        dprintk(2,
                                "qla1280_isr: asynchronous TIMEOUT_RESET\n");
                        break;
 
                case MBA_DEVICE_RESET:  /* Bus Device Reset */
                        printk(KERN_INFO "qla1280_isr(): asynchronous "
                               "BUS_DEVICE_RESET\n");
 
                        ha->flags.reset_marker = 1;
                        index = mailbox[6] & BIT_0;
                        ha->bus_settings[index].reset_marker = 1;
                        break;
 
                case MBA_BUS_MODE_CHANGE:
                        dprintk(2,
                                "qla1280_isr: asynchronous BUS_MODE_CHANGE\n");
                        break;
 
                default:
                        /* dprintk(1, "qla1280_isr: default case of switch MB \n"); */
                        if (mailbox[0] < MBA_ASYNC_EVENT) {
                                wptr = &mailbox[0];
                                memcpy((uint16_t *) ha->mailbox_out, wptr,
                                       MAILBOX_REGISTER_COUNT *
                                       sizeof(uint16_t));
 
                                if(ha->mailbox_wait != NULL)
                                        complete(ha->mailbox_wait);
                        }
                        break;
                }
        } else {
                WRT_REG_WORD(&reg->host_cmd, HC_CLR_RISC_INT);
        }
 
        /*
         * Response ring - waiting for the mbox_busy flag here seems
         * unnecessary as the mailbox data has been copied to ha->mailbox_out
         * by the time we actually get here!
         */
        if (!(ha->flags.online
#if 0
            && !ha->flags.mbox_busy
#endif
                )) {
                dprintk(2, "qla1280_isr: Response pointer Error\n");
                goto out;
        }
 
        if (mailbox[5] >= RESPONSE_ENTRY_CNT)
                goto out;
 
        while (ha->rsp_ring_index != mailbox[5]) {
                pkt = ha->response_ring_ptr;
 
                dprintk(5, "qla1280_isr: ha->rsp_ring_index = 0x%x, mailbox[5]"
                        " = 0x%x\n", ha->rsp_ring_index, mailbox[5]);
                dprintk(5,"qla1280_isr: response packet data\n");
                qla1280_dump_buffer(5, (char *)pkt, RESPONSE_ENTRY_SIZE);
 
                if (pkt->entry_type == STATUS_TYPE) {
                        if ((le16_to_cpu(pkt->scsi_status) & 0xff)
                            || pkt->comp_status || pkt->entry_status) {
                                dprintk(2, "qla1280_isr: ha->rsp_ring_index = "
                                        "0x%x mailbox[5] = 0x%x, comp_status "
                                        "= 0x%x, scsi_status = 0x%x\n",
                                        ha->rsp_ring_index, mailbox[5],
                                        le16_to_cpu(pkt->comp_status),
                                        le16_to_cpu(pkt->scsi_status));
                        }
                } else {
                        dprintk(2, "qla1280_isr: ha->rsp_ring_index = "
                                "0x%x, mailbox[5] = 0x%x\n",
                                ha->rsp_ring_index, mailbox[5]);
                        dprintk(2, "qla1280_isr: response packet data\n");
                        qla1280_dump_buffer(2, (char *)pkt,
                                            RESPONSE_ENTRY_SIZE);
                }
 
                if (pkt->entry_type == STATUS_TYPE || pkt->entry_status) {
                        dprintk(2, "status: Cmd %p, handle %i\n",
                                ha->outstanding_cmds[pkt->handle]->cmd,
                                pkt->handle);
                        if (pkt->entry_type == STATUS_TYPE)
                                qla1280_status_entry(ha, pkt, done_q_first,
                                                     done_q_last);
                        else
                                qla1280_error_entry(ha, pkt, done_q_first,
                                                    done_q_last);
 
                        /* Adjust ring index. */
                        ha->rsp_ring_index++;
                        if (ha->rsp_ring_index == RESPONSE_ENTRY_CNT) {
                                ha->rsp_ring_index = 0;
                                ha->response_ring_ptr = ha->response_ring;
                        } else
                                ha->response_ring_ptr++;
                        WRT_REG_WORD(&reg->mailbox5, ha->rsp_ring_index);
                }
        }
 
 out:
        LEAVE("qla1280_isr");
}
 
/*
 *  qla1280_rst_aen
 *      Processes asynchronous reset.
 *
 * Input:
 *      ha  = adapter block pointer.
 */
static void
qla1280_rst_aen(struct scsi_qla_host *ha)
{
        uint8_t bus;
 
        ENTER("qla1280_rst_aen");
 
        if (ha->flags.online && !ha->flags.reset_active &&
            !ha->flags.abort_isp_active) {
                ha->flags.reset_active = 1;
                while (ha->flags.reset_marker) {
                        /* Issue marker command. */
                        ha->flags.reset_marker = 0;
                        for (bus = 0; bus < ha->ports &&
                                     !ha->flags.reset_marker; bus++) {
                                if (ha->bus_settings[bus].reset_marker) {
                                        ha->bus_settings[bus].reset_marker = 0;
                                        qla1280_marker(ha, bus, 0, 0,
                                                       MK_SYNC_ALL);
                                }
                        }
                }
        }
 
        LEAVE("qla1280_rst_aen");
}
 
 
#if LINUX_VERSION_CODE < 0x020500
/*
 *
 */
static void
qla1280_get_target_options(struct scsi_cmnd *cmd, struct scsi_qla_host *ha)
{
        unsigned char *result;
        struct nvram *n;
        int bus, target, lun;
 
        bus = SCSI_BUS_32(cmd);
        target = SCSI_TCN_32(cmd);
        lun = SCSI_LUN_32(cmd);
 
        /*
         * Make sure to not touch anything if someone is using the
         * sg interface.
         */
        if (cmd->use_sg || (CMD_RESULT(cmd) >> 16) != DID_OK || lun)
                return;
 
        result = cmd->request_buffer;
        n = &ha->nvram;
 
        n->bus[bus].target[target].parameter.f.enable_wide = 0;
        n->bus[bus].target[target].parameter.f.enable_sync = 0;
        n->bus[bus].target[target].ppr_1x160.flags.enable_ppr = 0;
 
        if (result[7] & 0x60)
                n->bus[bus].target[target].parameter.f.enable_wide = 1;
        if (result[7] & 0x10)
                n->bus[bus].target[target].parameter.f.enable_sync = 1;
        if ((result[2] >= 3) && (result[4] + 5 > 56) &&
            (result[56] & 0x4))
                n->bus[bus].target[target].ppr_1x160.flags.enable_ppr = 1;
 
        dprintk(2, "get_target_options(): wide %i, sync %i, ppr %i\n",
                n->bus[bus].target[target].parameter.f.enable_wide,
                n->bus[bus].target[target].parameter.f.enable_sync,
                n->bus[bus].target[target].ppr_1x160.flags.enable_ppr);
}
#endif
 
/*
 *  qla1280_status_entry
 *      Processes received ISP status entry.
 *
 * Input:
 *      ha           = adapter block pointer.
 *      pkt          = entry pointer.
 *      done_q_first = done queue first pointer.
 *      done_q_last  = done queue last pointer.
 */
static void
qla1280_status_entry(struct scsi_qla_host *ha, struct response *pkt,
                     struct srb **done_q_first, struct srb **done_q_last)
{
        unsigned int bus, target, lun;
        int sense_sz;
        struct srb *sp;
        Scsi_Cmnd *cmd;
        uint32_t handle = le32_to_cpu(pkt->handle);
        uint16_t scsi_status = le16_to_cpu(pkt->scsi_status);
        uint16_t comp_status = le16_to_cpu(pkt->comp_status);
 
        ENTER("qla1280_status_entry");
 
        /* Validate handle. */
        if (handle < MAX_OUTSTANDING_COMMANDS)
                sp = ha->outstanding_cmds[handle];
        else
                sp = NULL;
 
        if (!sp) {
                printk(KERN_WARNING "qla1280: Status Entry invalid handle\n");
                goto out;
        }
 
        /* Free outstanding command slot. */
        ha->outstanding_cmds[handle] = 0;
 
        cmd = sp->cmd;
 
        /* Generate LU queue on cntrl, target, LUN */
        bus = SCSI_BUS_32(cmd);
        target = SCSI_TCN_32(cmd);
        lun = SCSI_LUN_32(cmd);
 
        if (comp_status || scsi_status) {
                dprintk(3, "scsi: comp_status = 0x%x, scsi_status = "
                        "0x%x, handle = 0x%x\n", comp_status,
                        scsi_status, handle);
        }
 
        /* Target busy */
        if (scsi_status & SS_BUSY_CONDITION &&
            scsi_status != SS_RESERVE_CONFLICT) {
                CMD_RESULT(cmd) =
                        DID_BUS_BUSY << 16 | (scsi_status & 0xff);
        } else {
 
                /* Save ISP completion status */
                CMD_RESULT(cmd) = qla1280_return_status(pkt, cmd);
 
                if (scsi_status & SS_CHECK_CONDITION) {
                        if (comp_status != CS_ARS_FAILED) {
                                uint16_t req_sense_length =
                                        le16_to_cpu(pkt->req_sense_length);
                                if (req_sense_length < CMD_SNSLEN(cmd))
                                        sense_sz = req_sense_length;
                                else
                                        /*
                                         * Scsi_Cmnd->sense_buffer is
                                         * 64 bytes, why only copy 63?
                                         * This looks wrong! /Jes
                                         */
                                        sense_sz = CMD_SNSLEN(cmd) - 1;
 
                                memcpy(cmd->sense_buffer,
                                       &pkt->req_sense_data, sense_sz);
                        } else
                                sense_sz = 0;
                        memset(cmd->sense_buffer + sense_sz, 0,
                               sizeof(cmd->sense_buffer) - sense_sz);
 
                        dprintk(2, "qla1280_status_entry: Check "
                                "condition Sense data, b %i, t %i, "
                                "l %i\n", bus, target, lun);
                        if (sense_sz)
                                qla1280_dump_buffer(2,
                                                    (char *)cmd->sense_buffer,
                                                    sense_sz);
                }
        }
        /* Place command on done queue. */
        qla1280_done_q_put(sp, done_q_first, done_q_last);
 
 out:
        LEAVE("qla1280_status_entry");
}
 
/*
 *  qla1280_error_entry
 *      Processes error entry.
 *
 * Input:
 *      ha           = adapter block pointer.
 *      pkt          = entry pointer.
 *      done_q_first = done queue first pointer.
 *      done_q_last  = done queue last pointer.
 */
static void
qla1280_error_entry(struct scsi_qla_host *ha, struct response * pkt,
                    struct srb ** done_q_first, struct srb ** done_q_last)
{
        struct srb *sp;
        uint32_t handle = le32_to_cpu(pkt->handle);
 
        ENTER("qla1280_error_entry");
 
        if (pkt->entry_status & BIT_3)
                dprintk(2, "qla1280_error_entry: BAD PAYLOAD flag error\n");
        else if (pkt->entry_status & BIT_2)
                dprintk(2, "qla1280_error_entry: BAD HEADER flag error\n");
        else if (pkt->entry_status & BIT_1)
                dprintk(2, "qla1280_error_entry: FULL flag error\n");
        else
                dprintk(2, "qla1280_error_entry: UNKNOWN flag error\n");
 
        /* Validate handle. */
        if (handle < MAX_OUTSTANDING_COMMANDS)
                sp = ha->outstanding_cmds[handle];
        else
                sp = 0;
 
        if (sp) {
                /* Free outstanding command slot. */
                ha->outstanding_cmds[handle] = 0;
 
                /* Bad payload or header */
                if (pkt->entry_status & (BIT_3 + BIT_2)) {
                        /* Bad payload or header, set error status. */
                        /* CMD_RESULT(sp->cmd) = CS_BAD_PAYLOAD; */
                        CMD_RESULT(sp->cmd) = DID_ERROR << 16;
                } else if (pkt->entry_status & BIT_1) { /* FULL flag */
                        CMD_RESULT(sp->cmd) = DID_BUS_BUSY << 16;
                } else {
                        /* Set error status. */
                        CMD_RESULT(sp->cmd) = DID_ERROR << 16;
                }
                /* Place command on done queue. */
                qla1280_done_q_put(sp, done_q_first, done_q_last);
        }
#ifdef QLA_64BIT_PTR
        else if (pkt->entry_type == COMMAND_A64_TYPE) {
                printk(KERN_WARNING "!qla1280: Error Entry invalid handle");
        }
#endif
 
        LEAVE("qla1280_error_entry");
}
 
/*
 *  qla1280_abort_isp
 *      Resets ISP and aborts all outstanding commands.
 *
 * Input:
 *      ha           = adapter block pointer.
 *
 * Returns:
 *      0 = success
 */
static int
qla1280_abort_isp(struct scsi_qla_host *ha)
{
        struct srb *sp;
        int status = 0;
        int cnt;
        int bus;
 
        ENTER("qla1280_abort_isp");
 
        if (!ha->flags.abort_isp_active && ha->flags.online) {
                struct device_reg *reg = ha->iobase;
                ha->flags.abort_isp_active = 1;
 
                /* Disable ISP interrupts. */
                qla1280_disable_intrs(ha);
                WRT_REG_WORD(&reg->host_cmd, HC_PAUSE_RISC);
                RD_REG_WORD(&reg->id_l);
 
                printk(KERN_INFO "scsi(%li): dequeuing outstanding commands\n",
                       ha->host_no);
                /* Dequeue all commands in outstanding command list. */
                for (cnt = 0; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
                        Scsi_Cmnd *cmd;
                        sp = ha->outstanding_cmds[cnt];
                        if (sp) {
 
                                cmd = sp->cmd;
                                CMD_RESULT(cmd) = DID_RESET << 16;
 
                                sp->cmd = NULL;
                                ha->outstanding_cmds[cnt] = NULL;
 
                                (*cmd->scsi_done)(cmd);
 
                                sp->flags = 0;
                        }
                }
 
                /* If firmware needs to be loaded */
                if (qla1280_isp_firmware (ha)) {
                        if (!(status = qla1280_chip_diag(ha)))
                                status = qla1280_setup_chip(ha);
                }
 
                if (!status) {
                        /* Setup adapter based on NVRAM parameters. */
                        qla1280_nvram_config (ha);
 
                        if (!(status = qla1280_init_rings(ha))) {
                                /* Issue SCSI reset. */
                                for (bus = 0; bus < ha->ports; bus++) {
                                        qla1280_bus_reset(ha, bus);
                                }
                                /*
                                 * qla1280_bus_reset() will do the marker
                                 * dance - no reason to repeat here!
                                 */
#if  0
                                /* Issue marker command. */
                                ha->flags.reset_marker = 0;
                                for (bus = 0; bus < ha->ports; bus++) {
                                        ha->bus_settings[bus].
                                                reset_marker = 0;
                                        qla1280_marker(ha, bus, 0, 0,
                                                       MK_SYNC_ALL);
                                }
#endif
                                ha->flags.abort_isp_active = 0;
                        }
                }
        }
 
        if (status) {
                printk(KERN_WARNING
                       "qla1280: ISP error recovery failed, board disabled");
                qla1280_reset_adapter(ha);
                dprintk(2, "qla1280_abort_isp: **** FAILED ****\n");
        }
 
        LEAVE("qla1280_abort_isp");
        return status;
}
 
 
/*
 * qla1280_debounce_register
 *      Debounce register.
 *
 * Input:
 *      port = register address.
 *
 * Returns:
 *      register value.
 */
static u16
qla1280_debounce_register(volatile u16 * addr)
{
        volatile u16 ret;
        volatile u16 ret2;
 
        ret = RD_REG_WORD(addr);
        ret2 = RD_REG_WORD(addr);
 
        if (ret == ret2)
                return ret;
 
        do {
                cpu_relax();
                ret = RD_REG_WORD(addr);
                ret2 = RD_REG_WORD(addr);
        } while (ret != ret2);
 
        return ret;
}
 
 
/************************************************************************
 * qla1280_check_for_dead_scsi_bus                                      *
 *                                                                      *
 *    This routine checks for a dead SCSI bus                           *
 ************************************************************************/
#define SET_SXP_BANK            0x0100
#define SCSI_PHASE_INVALID      0x87FF
static int
qla1280_check_for_dead_scsi_bus(struct scsi_qla_host *ha, unsigned int bus)
{
        uint16_t config_reg, scsi_control;
        struct device_reg *reg = ha->iobase;
 
        if (ha->bus_settings[bus].scsi_bus_dead) {
                WRT_REG_WORD(&reg->host_cmd, HC_PAUSE_RISC);
                config_reg = RD_REG_WORD(&reg->cfg_1);
                WRT_REG_WORD(&reg->cfg_1, SET_SXP_BANK);
                scsi_control = RD_REG_WORD(&reg->scsiControlPins);
                WRT_REG_WORD(&reg->cfg_1, config_reg);
                WRT_REG_WORD(&reg->host_cmd, HC_RELEASE_RISC);
 
                if (scsi_control == SCSI_PHASE_INVALID) {
                        ha->bus_settings[bus].scsi_bus_dead = 1;
#if 0
                        CMD_RESULT(cp) = DID_NO_CONNECT << 16;
                        CMD_HANDLE(cp) = INVALID_HANDLE;
                        /* ha->actthreads--; */
 
                        (*(cp)->scsi_done)(cp);
#endif
                        return 1;       /* bus is dead */
                } else {
                        ha->bus_settings[bus].scsi_bus_dead = 0;
                        ha->bus_settings[bus].failed_reset_count = 0;
                }
        }
        return 0;                /* bus is not dead */
}
 
static void
qla12160_get_target_parameters(struct scsi_qla_host *ha, Scsi_Device *device)
{
        uint16_t mb[MAILBOX_REGISTER_COUNT];
        int bus, target, lun;
 
        bus = device->channel;
        target = device->id;
        lun = device->lun;
 
 
        mb[0] = MBC_GET_TARGET_PARAMETERS;
        mb[1] = (uint16_t) (bus ? target | BIT_7 : target);
        mb[1] <<= 8;
        qla1280_mailbox_command(ha, BIT_6 | BIT_3 | BIT_2 | BIT_1 | BIT_0,
                                &mb[0]);
 
        printk(KERN_INFO "scsi(%li:%d:%d:%d):", ha->host_no, bus, target, lun);
 
        if (mb[3] != 0) {
                printk(" Sync: period %d, offset %d",
                       (mb[3] & 0xff), (mb[3] >> 8));
                if (mb[2] & BIT_13)
                        printk(", Wide");
                if ((mb[2] & BIT_5) && ((mb[6] >> 8) & 0xff) >= 2)
                        printk(", DT");
        } else
                printk(" Async");
 
        if (DEV_SIMPLE_TAGS(device))
                printk(", Tagged queuing: depth %d", device->queue_depth);
        printk("\n");
}
 
 
#if DEBUG_QLA1280
static void
__qla1280_dump_buffer(char *b, int size)
{
        int cnt;
        u8 c;
 
        printk(KERN_DEBUG " 0   1   2   3   4   5   6   7   8   9   Ah  "
               "Bh  Ch  Dh  Eh  Fh\n");
        printk(KERN_DEBUG "---------------------------------------------"
               "------------------\n");
 
        for (cnt = 0; cnt < size;) {
                c = *b++;
 
                printk("0x%02x", c);
                cnt++;
                if (!(cnt % 16))
                        printk("\n");
                else
                        printk(" ");
        }
        if (cnt % 16)
                printk("\n");
}
 
/**************************************************************************
 *   ql1280_print_scsi_cmd
 *
 **************************************************************************/
static void
__qla1280_print_scsi_cmd(Scsi_Cmnd * cmd)
{
        struct scsi_qla_host *ha;
        struct Scsi_Host *host = CMD_HOST(cmd);
        struct srb *sp;
        /* struct scatterlist *sg; */
 
        int i;
        ha = (struct scsi_qla_host *)host->hostdata;
 
        sp = (struct srb *)CMD_SP(cmd);
        printk("SCSI Command @= 0x%p, Handle=0x%p\n", cmd, CMD_HANDLE(cmd));
        printk("  chan=%d, target = 0x%02x, lun = 0x%02x, cmd_len = 0x%02x\n",
               SCSI_BUS_32(cmd), SCSI_TCN_32(cmd), SCSI_LUN_32(cmd),
               CMD_CDBLEN(cmd));
        printk(" CDB = ");
        for (i = 0; i < cmd->cmd_len; i++) {
                printk("0x%02x ", cmd->cmnd[i]);
        }
        printk("  seg_cnt =%d\n", cmd->use_sg);
        printk("  request buffer=0x%p, request buffer len=0x%x\n",
               cmd->request_buffer, cmd->request_bufflen);
        /* if (cmd->use_sg)
           {
           sg = (struct scatterlist *) cmd->request_buffer;
           printk("  SG buffer: \n");
           qla1280_dump_buffer(1, (char *)sg, (cmd->use_sg*sizeof(struct scatterlist)));
           } */
        printk("  tag=%d, flags=0x%x, transfersize=0x%x \n",
               cmd->tag, cmd->flags, cmd->transfersize);
        printk("  Pid=%li, SP=0x%p\n", cmd->pid, CMD_SP(cmd));
        printk(" underflow size = 0x%x, direction=0x%x\n",
               cmd->underflow, sp->dir);
}
 
/**************************************************************************
 *   ql1280_dump_device
 *
 **************************************************************************/
static void
ql1280_dump_device(struct scsi_qla_host *ha)
{
 
        Scsi_Cmnd *cp;
        struct srb *sp;
        int i;
 
        printk(KERN_DEBUG "Outstanding Commands on controller:\n");
 
        for (i = 0; i < MAX_OUTSTANDING_COMMANDS; i++) {
                if ((sp = ha->outstanding_cmds[i]) == NULL)
                        continue;
                if ((cp = sp->cmd) == NULL)
                        continue;
                qla1280_print_scsi_cmd(1, cp);
        }
}
#endif
 
 
enum tokens {
        TOKEN_NVRAM,
        TOKEN_SYNC,
        TOKEN_WIDE,
        TOKEN_PPR,
        TOKEN_VERBOSE,
        TOKEN_DEBUG,
};
 
struct setup_tokens {
        char *token;
        int val;
};
 
static struct setup_tokens setup_token[] __initdata =
{
        { "nvram", TOKEN_NVRAM },
        { "sync", TOKEN_SYNC },
        { "wide", TOKEN_WIDE },
        { "ppr", TOKEN_PPR },
        { "verbose", TOKEN_VERBOSE },
        { "debug", TOKEN_DEBUG },
};
 
 
/**************************************************************************
 *   qla1280_setup
 *
 *   Handle boot parameters. This really needs to be changed so one
 *   can specify per adapter parameters.
 **************************************************************************/
static int __init
qla1280_setup(char *s)
{
        char *cp, *ptr;
        unsigned long val;
        int toke;
 
        cp = s;
 
        while (cp && (ptr = strchr(cp, ':'))) {
                ptr++;
                if (!strcmp(ptr, "yes")) {
                        val = 0x10000;
                        ptr += 3;
                } else if (!strcmp(ptr, "no")) {
                        val = 0;
                        ptr += 2;
                } else
                        val = simple_strtoul(ptr, &ptr, 0);
 
                switch ((toke = qla1280_get_token(cp))) {
                case TOKEN_NVRAM:
                        if (!val)
                                driver_setup.no_nvram = 1;
                        break;
                case TOKEN_SYNC:
                        if (!val)
                                driver_setup.no_sync = 1;
                        else if (val != 0x10000)
                                driver_setup.sync_mask = val;
                        break;
                case TOKEN_WIDE:
                        if (!val)
                                driver_setup.no_wide = 1;
                        else if (val != 0x10000)
                                driver_setup.wide_mask = val;
                        break;
                case TOKEN_PPR:
                        if (!val)
                                driver_setup.no_ppr = 1;
                        else if (val != 0x10000)
                                driver_setup.ppr_mask = val;
                        break;
                case TOKEN_VERBOSE:
                        qla1280_verbose = val;
                        break;
                default:
                        printk(KERN_INFO "qla1280: unknown boot option %s\n",
                               cp);
                }
 
                cp = strchr(ptr, ';');
                if (cp)
                        cp++;
                else {
                        break;
                }
        }
        return 1;
}
 
 
static int
qla1280_get_token(char *str)
{
        char *sep;
        long ret = -1;
        int i, len;
 
        len = sizeof(setup_token)/sizeof(struct setup_tokens);
 
        sep = strchr(str, ':');
 
        if (sep) {
                for (i = 0; i < len; i++){
 
                        if (!strncmp(setup_token[i].token, str, (sep - str))) {
                                ret =  setup_token[i].val;
                                break;
                        }
                }
        }
 
        return ret;
}
 
 
static Scsi_Host_Template driver_template = {
        .proc_info              = qla1280_proc_info,
        .name                   = "Qlogic ISP 1280/12160",
        .detect                 = qla1280_detect,
        .release                = qla1280_release,
        .info                   = qla1280_info,
        .queuecommand           = qla1280_queuecommand,
#if LINUX_VERSION_CODE >= 0x020545
        .slave_configure        = qla1280_slave_configure,
#endif
        .eh_abort_handler       = qla1280_eh_abort,
        .eh_device_reset_handler= qla1280_eh_device_reset,
        .eh_bus_reset_handler   = qla1280_eh_bus_reset,
        .eh_host_reset_handler  = qla1280_eh_adapter_reset,
        .bios_param             = qla1280_biosparam,
        .can_queue              = 255,
        .this_id                = -1,
        .sg_tablesize           = SG_ALL,
        .cmd_per_lun            = 3,
        .use_clustering         = ENABLE_CLUSTERING,
#if LINUX_VERSION_CODE < 0x020545
        .use_new_eh_code        = 1,
#endif
};
 
#include "scsi_module.c"
 
 
/*
 * Overrides for Emacs so that we almost follow Linus's tabbing style.
 * Emacs will notice this stuff at the end of the file and automatically
 * adjust the settings for this buffer only.  This must remain at the end
 * of the file.
 * ---------------------------------------------------------------------------
 * Local variables:
 * c-basic-offset: 8
 * tab-width: 8
 * End:
 */
Browse

Tools

Subversion Repositories or1k

[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [scsi/] [qla1280.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	1275	phoenix	`/******************************************************************************`
2			`* QLOGIC LINUX SOFTWARE`
3			`*`
4			`* QLogic QLA1280 (Ultra2) and QLA12160 (Ultra3) SCSI driver`
5			`* Copyright (C) 2000 Qlogic Corporation (www.qlogic.com)`
6			`* Copyright (C) 2001-2003 Jes Sorensen, Wild Open Source Inc.`
7			`*`
8			`* This program is free software; you can redistribute it and/or modify it`
9			`* under the terms of the GNU General Public License as published by the`
10			`* Free Software Foundation; either version 2, or (at your option) any`
11			`* later version.`
12			`*`
13			`* This program is distributed in the hope that it will be useful, but`
14			`* WITHOUT ANY WARRANTY; without even the implied warranty of`
15			`* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU`
16			`* General Public License for more details.`
17			`*`
18			`******************************************************************************/`
19			`#define QLA1280_VERSION "3.23.37"`
20			`/*****************************************************************************`
21			`Revision History:`
22			`Rev 3.23.37 October 1, 2003, Jes Sorensen`
23			`- Make MMIO depend on CONFIG_X86_VISWS instead of yet another`
24			`random CONFIG option`
25			`- Clean up locking in probe path`
26			`Rev 3.23.36 October 1, 2003, Christoph Hellwig`
27			`- queuecommand only ever receives new commands - clear flags`
28			`- Reintegrate lost fixes from Linux 2.5`
29			`Rev 3.23.35 August 14, 2003, Jes Sorensen`
30			`- Build against 2.6`
31			`Rev 3.23.34 July 23, 2003, Jes Sorensen`
32			`- Remove pointless TRUE/FALSE macros`
33			`- Clean up vchan handling`
34			`Rev 3.23.33 July 3, 2003, Jes Sorensen`
35			`- Don't define register access macros before define determining MMIO.`
36			`This just happend to work out on ia64 but not elsewhere.`
37			`- Don't try and read from the card while it is in reset as`
38			`it won't respond and causes an MCA`
39			`Rev 3.23.32 June 23, 2003, Jes Sorensen`
40			`- Basic support for boot time arguments`