qla1280.c

linux 内核源代码

/******************************************************************************
*                  QLOGIC LINUX SOFTWARE
*
* QLogic  QLA1280 (Ultra2)  and  QLA12160 (Ultra3) SCSI driver
* Copyright (C) 2000 Qlogic Corporation (www.qlogic.com)
* Copyright (C) 2001-2004 Jes Sorensen, Wild Open Source Inc.
* Copyright (C) 2003-2004 Christoph Hellwig
*
* 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      "3.26"
/*****************************************************************************
    Revision History:
    Rev  3.26, January 16, 2006 Jes Sorensen
	- Ditch all < 2.6 support
    Rev  3.25.1, February 10, 2005 Christoph Hellwig
	- use pci_map_single to map non-S/G requests
	- remove qla1280_proc_info
    Rev  3.25, September 28, 2004, Christoph Hellwig
	- add support for ISP1020/1040
	- don't include "scsi.h" anymore for 2.6.x
    Rev  3.24.4 June 7, 2004 Christoph Hellwig
	- restructure firmware loading, cleanup initialization code
	- prepare support for ISP1020/1040 chips
    Rev  3.24.3 January 19, 2004, Jes Sorensen
	- Handle PCI DMA mask settings correctly
	- Correct order of error handling in probe_one, free_irq should not
	  be called if request_irq failed
    Rev  3.24.2 January 19, 2004, James Bottomley & Andrew Vasquez
	- Big endian fixes (James)
	- Remove bogus IOCB content on zero data transfer commands (Andrew)
    Rev  3.24.1 January 5, 2004, Jes Sorensen
	- Initialize completion queue to avoid OOPS on probe
	- Handle interrupts during mailbox testing
    Rev  3.24 November 17, 2003, Christoph Hellwig
    	- use struct list_head for completion queue
	- avoid old Scsi_FOO typedefs
	- cleanup 2.4 compat glue a bit
	- use <scsi/scsi_*.h> headers on 2.6 instead of "scsi.h"
	- make initialization for memory mapped vs port I/O more similar
	- remove broken pci config space manipulation
	- kill more cruft
	- this is an almost perfect 2.6 scsi driver now! ;)
    Rev  3.23.39 December 17, 2003, Jes Sorensen
	- Delete completion queue from srb if mailbox command failed to
	  to avoid qla1280_done completeting qla1280_error_action's
	  obsolete context
	- Reduce arguments for qla1280_done
    Rev  3.23.38 October 18, 2003, Christoph Hellwig
	- Convert to new-style hotplugable driver for 2.6
	- Fix missing scsi_unregister/scsi_host_put on HBA removal
	- Kill some more cruft
    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 IRQF_DISABLED, 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/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/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 <linux/dma-mapping.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>

#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>

#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
#include <asm/sn/io.h>
#endif

#if LINUX_VERSION_CODE < 0x020600
#error "Kernels older than 2.6.0 are no longer supported"
#endif


/*
 * Compile time Options:
 *            0 - Disable and 1 - Enable
 */
#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"
#include "ql1040_fw.h"

#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

#ifdef QLA_64BIT_PTR
#define pci_dma_hi32(a)			((a >> 16) >> 16)
#else
#define pci_dma_hi32(a)			0
#endif