scsi: eata: eata-pio: Deprecate legacy EATA drivers

These two drivers do not appear to be in active use. Deprecate them.

Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

8 files changed, 0 insertions, 4064 deletions

diff --git a/Documentation/scsi/scsi-parameters.txt b/Documentation/scsi/scsi-parameters.txt
index 453d4b79c78d..8f7be8a05642 100644
--- a/Documentation/scsi/scsi-parameters.txt
+++ b/Documentation/scsi/scsi-parameters.txt
@@ -34,8 +34,6 @@ parameters may be changed at runtime by the command
 			See drivers/scsi/BusLogic.c, comment before function
 			BusLogic_ParseDriverOptions().
 
-	eata=		[HW,SCSI]
-
 	fdomain=	[HW,SCSI]
 			See header of drivers/scsi/fdomain.c.
 
diff --git a/MAINTAINERS b/MAINTAINERS
index 3bdc260e36b7..36eb73238cf5 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5003,12 +5003,6 @@ T:	git git://linuxtv.org/anttip/media_tree.git
 S:	Maintained
 F:	drivers/media/tuners/e4000*
 
-EATA ISA/EISA/PCI SCSI DRIVER
-M:	Dario Ballabio <ballabio_dario@emc.com>
-L:	linux-scsi@vger.kernel.org
-S:	Maintained
-F:	drivers/scsi/eata.c
-
 EC100 MEDIA DRIVER
 M:	Antti Palosaari <crope@iki.fi>
 L:	linux-media@vger.kernel.org
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 8647ca9199b3..b18dfa1c14a1 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -640,68 +640,6 @@ config SCSI_DMX3191D
 	  To compile this driver as a module, choose M here: the
 	  module will be called dmx3191d.
 
-config SCSI_EATA
-	tristate "EATA ISA/EISA/PCI (DPT and generic EATA/DMA-compliant boards) support"
-	depends on (ISA || EISA || PCI) && SCSI && ISA_DMA_API
-	---help---
-	  This driver supports all EATA/DMA-compliant SCSI host adapters.  DPT
-	  ISA and all EISA I/O addresses are probed looking for the "EATA"
-	  signature. The addresses of all the PCI SCSI controllers reported
-          by the PCI subsystem are probed as well.
-
-	  You want to read the start of <file:drivers/scsi/eata.c> and the
-	  SCSI-HOWTO, available from
-	  <http://www.tldp.org/docs.html#howto>.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called eata.
-
-config SCSI_EATA_TAGGED_QUEUE
-	bool "enable tagged command queueing"
-	depends on SCSI_EATA
-	help
-	  This is a feature of SCSI-2 which improves performance: the host
-	  adapter can send several SCSI commands to a device's queue even if
-	  previous commands haven't finished yet.
-	  This is equivalent to the "eata=tc:y" boot option.
-
-config SCSI_EATA_LINKED_COMMANDS
-	bool "enable elevator sorting"
-	depends on SCSI_EATA
-	help
-	  This option enables elevator sorting for all probed SCSI disks and
-	  CD-ROMs. It definitely reduces the average seek distance when doing
-	  random seeks, but this does not necessarily result in a noticeable
-	  performance improvement: your mileage may vary...
-	  This is equivalent to the "eata=lc:y" boot option.
-
-config SCSI_EATA_MAX_TAGS
-	int "maximum number of queued commands"
-	depends on SCSI_EATA
-	default "16"
-	help
-	  This specifies how many SCSI commands can be maximally queued for
-	  each probed SCSI device. You should reduce the default value of 16
-	  only if you have disks with buggy or limited tagged command support.
-	  Minimum is 2 and maximum is 62. This value is also the window size
-	  used by the elevator sorting option above. The effective value used
-	  by the driver for each probed SCSI device is reported at boot time.
-	  This is equivalent to the "eata=mq:8" boot option.
-
-config SCSI_EATA_PIO
-	tristate "EATA-PIO (old DPT PM2001, PM2012A) support"
-	depends on (ISA || EISA || PCI) && SCSI && BROKEN
-	---help---
-	  This driver supports all EATA-PIO protocol compliant SCSI Host
-	  Adapters like the DPT PM2001 and the PM2012A.  EATA-DMA compliant
-	  host adapters could also use this driver but are discouraged from
-	  doing so, since this driver only supports hard disks and lacks
-	  numerous features.  You might want to have a look at the SCSI-HOWTO,
-	  available from <http://www.tldp.org/docs.html#howto>.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called eata_pio.
-
 config SCSI_FUTURE_DOMAIN
 	tristate "Future Domain 16xx SCSI/AHA-2920A support"
 	depends on (ISA || PCI) && SCSI
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index fcfd28d2884c..46f1c1033f0e 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -93,8 +93,6 @@ obj-$(CONFIG_SCSI_HPSA)		+= hpsa.o
 obj-$(CONFIG_SCSI_SMARTPQI)	+= smartpqi/
 obj-$(CONFIG_SCSI_SYM53C8XX_2)	+= sym53c8xx_2/
 obj-$(CONFIG_SCSI_ZALON)	+= zalon7xx.o
-obj-$(CONFIG_SCSI_EATA_PIO)	+= eata_pio.o
-obj-$(CONFIG_SCSI_EATA)		+= eata.o
 obj-$(CONFIG_SCSI_DC395x)	+= dc395x.o
 obj-$(CONFIG_SCSI_AM53C974)	+= esp_scsi.o	am53c974.o
 obj-$(CONFIG_CXLFLASH)		+= cxlflash/
diff --git a/drivers/scsi/eata.c b/drivers/scsi/eata.c
deleted file mode 100644
index 6501c330d8c8..000000000000
--- a/drivers/scsi/eata.c
+++ /dev/null
@@ -1,2571 +0,0 @@
-/*
- *      eata.c - Low-level driver for EATA/DMA SCSI host adapters.
- *
- *      03 Jun 2003 Rev. 8.10 for linux-2.5.70
- *        + Update for new IRQ API.
- *        + Use "goto" when appropriate.
- *        + Drop eata.h.
- *        + Update for new module_param API.
- *        + Module parameters  can now be specified only in the
- *          same format as the kernel boot options.
- *
- *             boot option    old module param 
- *             -----------    ------------------
- *             addr,...       io_port=addr,...
- *             lc:[y|n]       linked_comm=[1|0]
- *             mq:xx          max_queue_depth=xx
- *             tm:[0|1|2]     tag_mode=[0|1|2]
- *             et:[y|n]       ext_tran=[1|0]
- *             rs:[y|n]       rev_scan=[1|0]
- *             ip:[y|n]       isa_probe=[1|0]
- *             ep:[y|n]       eisa_probe=[1|0]
- *             pp:[y|n]       pci_probe=[1|0]
- *
- *          A valid example using the new parameter format is:
- *          modprobe eata "eata=0x7410,0x230,lc:y,tm:0,mq:4,ep:n"
- *
- *          which is equivalent to the old format:
- *          modprobe eata io_port=0x7410,0x230 linked_comm=1 tag_mode=0 \
- *                        max_queue_depth=4 eisa_probe=0
- *
- *      12 Feb 2003 Rev. 8.04 for linux 2.5.60
- *        + Release irq before calling scsi_register.
- *
- *      12 Nov 2002 Rev. 8.02 for linux 2.5.47
- *        + Release driver_lock before calling scsi_register.
- *
- *      11 Nov 2002 Rev. 8.01 for linux 2.5.47
- *        + Fixed bios_param and scsicam_bios_param calling parameters.
- *
- *      28 Oct 2002 Rev. 8.00 for linux 2.5.44-ac4
- *        + Use new tcq and adjust_queue_depth api.
- *        + New command line option (tm:[0-2]) to choose the type of tags:
- *          0 -> disable tagging ; 1 -> simple tags  ; 2 -> ordered tags.
- *          Default is tm:0 (tagged commands disabled).
- *          For compatibility the "tc:" option is an alias of the "tm:"
- *          option; tc:n is equivalent to tm:0 and tc:y is equivalent to
- *          tm:1.
- *        + The tagged_comm module parameter has been removed, use tag_mode
- *          instead, equivalent to the "tm:" boot option.
- *
- *      10 Oct 2002 Rev. 7.70 for linux 2.5.42
- *        + Foreport from revision 6.70.
- *
- *      25 Jun 2002 Rev. 6.70 for linux 2.4.19
- *        + This release is the first one tested on a Big Endian platform:
- *          fixed endian-ness problem due to bitfields;
- *          fixed endian-ness problem in read_pio.
- *        + Added new options for selectively probing ISA, EISA and PCI bus:
- *
- *          Boot option   Parameter name    Default according to
- *
- *          ip:[y|n]      isa_probe=[1|0]   CONFIG_ISA  defined
- *          ep:[y|n]      eisa_probe=[1|0]  CONFIG_EISA defined
- *          pp:[y|n]      pci_probe=[1|0]   CONFIG_PCI  defined
- *
- *          The default action is to perform probing if the corresponding
- *          bus is configured and to skip probing otherwise.
- *
- *        + If pci_probe is in effect and a list of I/O  ports is specified
- *          as parameter or boot option, pci_enable_device() is performed
- *          on all pci devices matching PCI_CLASS_STORAGE_SCSI.
- *
- *      21 Feb 2002 Rev. 6.52 for linux 2.4.18
- *        + Backport from rev. 7.22 (use io_request_lock).
- *
- *      20 Feb 2002 Rev. 7.22 for linux 2.5.5
- *        + Remove any reference to virt_to_bus().
- *        + Fix pio hang while detecting multiple HBAs.
- *        + Fixed a board detection bug: in a system with
- *          multiple ISA/EISA boards, all but the first one
- *          were erroneously detected as PCI.
- *
- *      01 Jan 2002 Rev. 7.20 for linux 2.5.1
- *        + Use the dynamic DMA mapping API.
- *
- *      19 Dec 2001 Rev. 7.02 for linux 2.5.1
- *        + Use SCpnt->sc_data_direction if set.
- *        + Use sglist.page instead of sglist.address.
- *
- *      11 Dec 2001 Rev. 7.00 for linux 2.5.1
- *        + Use host->host_lock instead of io_request_lock.
- *
- *       1 May 2001 Rev. 6.05 for linux 2.4.4
- *        + Clean up all pci related routines.
- *        + Fix data transfer direction for opcode SEND_CUE_SHEET (0x5d)
- *
- *      30 Jan 2001 Rev. 6.04 for linux 2.4.1
- *        + Call pci_resource_start after pci_enable_device.
- *
- *      25 Jan 2001 Rev. 6.03 for linux 2.4.0
- *        + "check_region" call replaced by "request_region".
- *
- *      22 Nov 2000 Rev. 6.02 for linux 2.4.0-test11
- *        + Return code checked when calling pci_enable_device.
- *        + Removed old scsi error handling support.
- *        + The obsolete boot option flag eh:n is silently ignored.
- *        + Removed error messages while a disk drive is powered up at
- *          boot time.
- *        + Improved boot messages: all tagged capable device are
- *          indicated as "tagged" or "soft-tagged" :
- *          - "soft-tagged"  means that the driver is trying to do its
- *            own tagging (i.e. the tc:y option is in effect);
- *          - "tagged" means that the device supports tagged commands,
- *            but the driver lets the HBA be responsible for tagging
- *            support.
- *
- *      16 Sep 1999 Rev. 5.11 for linux 2.2.12 and 2.3.18
- *        + Updated to the new __setup interface for boot command line options.
- *        + When loaded as a module, accepts the new parameter boot_options
- *          which value is a string with the same format of the kernel boot
- *          command line options. A valid example is:
- *          modprobe eata 'boot_options="0x7410,0x230,lc:y,tc:n,mq:4"'
- *
- *       9 Sep 1999 Rev. 5.10 for linux 2.2.12 and 2.3.17
- *        + 64bit cleanup for Linux/Alpha platform support
- *          (contribution from H.J. Lu).
- *
- *      22 Jul 1999 Rev. 5.00 for linux 2.2.10 and 2.3.11
- *        + Removed pre-2.2 source code compatibility.
- *        + Added call to pci_set_master.
- *
- *      26 Jul 1998 Rev. 4.33 for linux 2.0.35 and 2.1.111
- *        + Added command line option (rs:[y|n]) to reverse the scan order
- *          of PCI boards. The default is rs:y, which reverses the BIOS order
- *          while registering PCI boards. The default value rs:y generates
- *          the same order of all previous revisions of this driver.
- *          Pls. note that "BIOS order" might have been reversed itself
- *          after the 2.1.9x PCI modifications in the linux kernel.
- *          The rs value is ignored when the explicit list of addresses
- *          is used by the "eata=port0,port1,..." command line option.
- *        + Added command line option (et:[y|n]) to force use of extended
- *          translation (255 heads, 63 sectors) as disk geometry.
- *          The default is et:n, which uses the disk geometry returned
- *          by scsicam_bios_param. The default value et:n is compatible with
- *          all previous revisions of this driver.
- *
- *      28 May 1998 Rev. 4.32 for linux 2.0.33 and 2.1.104
- *          Increased busy timeout from 10 msec. to 200 msec. while
- *          processing interrupts.
- *
- *      16 May 1998 Rev. 4.31 for linux 2.0.33 and 2.1.102
- *          Improved abort handling during the eh recovery process.
- *
- *      13 May 1998 Rev. 4.30 for linux 2.0.33 and 2.1.101
- *          The driver is now fully SMP safe, including the
- *          abort and reset routines.
- *          Added command line options (eh:[y|n]) to choose between
- *          new_eh_code and the old scsi code.
- *          If linux version >= 2.1.101 the default is eh:y, while the eh
- *          option is ignored for previous releases and the old scsi code
- *          is used.
- *
- *      18 Apr 1998 Rev. 4.20 for linux 2.0.33 and 2.1.97
- *          Reworked interrupt handler.
- *
- *      11 Apr 1998 rev. 4.05 for linux 2.0.33 and 2.1.95
- *          Major reliability improvement: when a batch with overlapping
- *          requests is detected, requests are queued one at a time
- *          eliminating any possible board or drive reordering.
- *
- *      10 Apr 1998 rev. 4.04 for linux 2.0.33 and 2.1.95
- *          Improved SMP support (if linux version >= 2.1.95).
- *
- *       9 Apr 1998 rev. 4.03 for linux 2.0.33 and 2.1.94
- *          Added support for new PCI code and IO-APIC remapping of irqs.
- *          Performance improvement: when sequential i/o is detected,
- *          always use direct sort instead of reverse sort.
- *
- *       4 Apr 1998 rev. 4.02 for linux 2.0.33 and 2.1.92
- *          io_port is now unsigned long.
- *
- *      17 Mar 1998 rev. 4.01 for linux 2.0.33 and 2.1.88
- *          Use new scsi error handling code (if linux version >= 2.1.88).
- *          Use new interrupt code.
- *
- *      12 Sep 1997 rev. 3.11 for linux 2.0.30 and 2.1.55
- *          Use of udelay inside the wait loops to avoid timeout
- *          problems with fast cpus.
- *          Removed check about useless calls to the interrupt service
- *          routine (reported on SMP systems only).
- *          At initialization time "sorted/unsorted" is displayed instead
- *          of "linked/unlinked" to reinforce the fact that "linking" is
- *          nothing but "elevator sorting" in the actual implementation.
- *
- *      17 May 1997 rev. 3.10 for linux 2.0.30 and 2.1.38
- *          Use of serial_number_at_timeout in abort and reset processing.
- *          Use of the __initfunc and __initdata macro in setup code.
- *          Minor cleanups in the list_statistics code.
- *          Increased controller busy timeout in order to better support
- *          slow SCSI devices.
- *
- *      24 Feb 1997 rev. 3.00 for linux 2.0.29 and 2.1.26
- *          When loading as a module, parameter passing is now supported
- *          both in 2.0 and in 2.1 style.
- *          Fixed data transfer direction for some SCSI opcodes.
- *          Immediate acknowledge to request sense commands.
- *          Linked commands to each disk device are now reordered by elevator
- *          sorting. Rare cases in which reordering of write requests could
- *          cause wrong results are managed.
- *          Fixed spurious timeouts caused by long simple queue tag sequences.
- *          New command line option (tm:[0-3]) to choose the type of tags:
- *          0 -> mixed (default); 1 -> simple; 2 -> head; 3 -> ordered.
- *
- *      18 Jan 1997 rev. 2.60 for linux 2.1.21 and 2.0.28
- *          Added command line options to enable/disable linked commands
- *          (lc:[y|n]), tagged commands (tc:[y|n]) and to set the max queue
- *          depth (mq:xx). Default is "eata=lc:n,tc:n,mq:16".
- *          Improved command linking.
- *          Documented how to setup RAID-0 with DPT SmartRAID boards.
- *
- *       8 Jan 1997 rev. 2.50 for linux 2.1.20 and 2.0.27
- *          Added linked command support.
- *          Improved detection of PCI boards using ISA base addresses.
- *
- *       3 Dec 1996 rev. 2.40 for linux 2.1.14 and 2.0.27
- *          Added support for tagged commands and queue depth adjustment.
- *
- *      22 Nov 1996 rev. 2.30 for linux 2.1.12 and 2.0.26
- *          When CONFIG_PCI is defined, BIOS32 is used to include in the
- *          list of i/o ports to be probed all the PCI SCSI controllers.
- *          The list of i/o ports to be probed can be overwritten by the
- *          "eata=port0,port1,...." boot command line option.
- *          Scatter/gather lists are now allocated by a number of kmalloc
- *          calls, in order to avoid the previous size limit of 64Kb.
- *
- *      16 Nov 1996 rev. 2.20 for linux 2.1.10 and 2.0.25
- *          Added support for EATA 2.0C, PCI, multichannel and wide SCSI.
- *
- *      27 Sep 1996 rev. 2.12 for linux 2.1.0
- *          Portability cleanups (virtual/bus addressing, little/big endian
- *          support).
- *
- *      09 Jul 1996 rev. 2.11 for linux 2.0.4
- *          Number of internal retries is now limited.
- *
- *      16 Apr 1996 rev. 2.10 for linux 1.3.90
- *          New argument "reset_flags" to the reset routine.
- *
- *       6 Jul 1995 rev. 2.01 for linux 1.3.7
- *          Update required by the new /proc/scsi support.
- *
- *      11 Mar 1995 rev. 2.00 for linux 1.2.0
- *          Fixed a bug which prevented media change detection for removable
- *          disk drives.
- *
- *      23 Feb 1995 rev. 1.18 for linux 1.1.94
- *          Added a check for scsi_register returning NULL.
- *
- *      11 Feb 1995 rev. 1.17 for linux 1.1.91
- *          Now DEBUG_RESET is disabled by default.
- *          Register a board even if it does not assert DMA protocol support
- *          (DPT SK2011B does not report correctly the dmasup bit).
- *
- *       9 Feb 1995 rev. 1.16 for linux 1.1.90
- *          Use host->wish_block instead of host->block.
- *          New list of Data Out SCSI commands.
- *
- *       8 Feb 1995 rev. 1.15 for linux 1.1.89
- *          Cleared target_time_out counter while performing a reset.
- *          All external symbols renamed to avoid possible name conflicts.
- *
- *      28 Jan 1995 rev. 1.14 for linux 1.1.86
- *          Added module support.
- *          Log and do a retry when a disk drive returns a target status
- *          different from zero on a recovered error.
- *
- *      24 Jan 1995 rev. 1.13 for linux 1.1.85
- *          Use optimized board configuration, with a measured performance
- *          increase in the range 10%-20% on i/o throughput.
- *
- *      16 Jan 1995 rev. 1.12 for linux 1.1.81
- *          Fix mscp structure comments (no functional change).
- *          Display a message if check_region detects a port address
- *          already in use.
- *
- *      17 Dec 1994 rev. 1.11 for linux 1.1.74
- *          Use the scsicam_bios_param routine. This allows an easy
- *          migration path from disk partition tables created using
- *          different SCSI drivers and non optimal disk geometry.
- *
- *      15 Dec 1994 rev. 1.10 for linux 1.1.74
- *          Added support for ISA EATA boards (DPT PM2011, DPT PM2021).
- *          The host->block flag is set for all the detected ISA boards.
- *          The detect routine no longer enforces LEVEL triggering
- *          for EISA boards, it just prints a warning message.
- *
- *      30 Nov 1994 rev. 1.09 for linux 1.1.68
- *          Redo i/o on target status CHECK_CONDITION for TYPE_DISK only.
- *          Added optional support for using a single board at a time.
- *
- *      18 Nov 1994 rev. 1.08 for linux 1.1.64
- *          Forces sg_tablesize = 64 and can_queue = 64 if these
- *          values are not correctly detected (DPT PM2012).
- *
- *      14 Nov 1994 rev. 1.07 for linux 1.1.63  Final BETA release.
- *      04 Aug 1994 rev. 1.00 for linux 1.1.39  First BETA release.
- *
- *
- *          This driver is based on the CAM (Common Access Method Committee)
- *          EATA (Enhanced AT Bus Attachment) rev. 2.0A, using DMA protocol.
- *
- *  Copyright (C) 1994-2003 Dario Ballabio (ballabio_dario@emc.com)
- *
- *  Alternate email: dario.ballabio@inwind.it, dario.ballabio@tiscalinet.it
- *
- *  Redistribution and use in source and binary forms, with or without
- *  modification, are permitted provided that redistributions of source
- *  code retain the above copyright notice and this comment without
- *  modification.
- *
- */
-
-/*
- *
- *  Here is a brief description of the DPT SCSI host adapters.
- *  All these boards provide an EATA/DMA compatible programming interface
- *  and are fully supported by this driver in any configuration, including
- *  multiple SCSI channels:
- *
- *  PM2011B/9X -  Entry Level ISA
- *  PM2021A/9X -  High Performance ISA
- *  PM2012A       Old EISA
- *  PM2012B       Old EISA
- *  PM2022A/9X -  Entry Level EISA
- *  PM2122A/9X -  High Performance EISA
- *  PM2322A/9X -  Extra High Performance EISA
- *  PM3021     -  SmartRAID Adapter for ISA
- *  PM3222     -  SmartRAID Adapter for EISA (PM3222W is 16-bit wide SCSI)
- *  PM3224     -  SmartRAID Adapter for PCI  (PM3224W is 16-bit wide SCSI)
- *  PM33340UW  -  SmartRAID Adapter for PCI  ultra wide multichannel
- *
- *  The above list is just an indication: as a matter of fact all DPT
- *  boards using the EATA/DMA protocol are supported by this driver,
- *  since they use exactely the same programming interface.
- *
- *  The DPT PM2001 provides only the EATA/PIO interface and hence is not
- *  supported by this driver.
- *
- *  This code has been tested with up to 3 Distributed Processing Technology
- *  PM2122A/9X (DPT SCSI BIOS v002.D1, firmware v05E.0) EISA controllers,
- *  in any combination of private and shared IRQ.
- *  PCI support has been tested using up to 2 DPT PM3224W (DPT SCSI BIOS
- *  v003.D0, firmware v07G.0).
- *
- *  DPT SmartRAID boards support "Hardware Array" - a group of disk drives
- *  which are all members of the same RAID-0, RAID-1 or RAID-5 array implemented
- *  in host adapter hardware. Hardware Arrays are fully compatible with this
- *  driver, since they look to it as a single disk drive.
- *
- *  WARNING: to create a RAID-0 "Hardware Array" you must select "Other Unix"
- *  as the current OS in the DPTMGR "Initial System Installation" menu.
- *  Otherwise RAID-0 is generated as an "Array Group" (i.e. software RAID-0),
- *  which is not supported by the actual SCSI subsystem.
- *  To get the "Array Group" functionality, the Linux MD driver must be used
- *  instead of the DPT "Array Group" feature.
- *
- *  Multiple ISA, EISA and PCI boards can be configured in the same system.
- *  It is suggested to put all the EISA boards on the same IRQ level, all
- *  the PCI  boards on another IRQ level, while ISA boards cannot share
- *  interrupts.
- *
- *  If you configure multiple boards on the same IRQ, the interrupt must
- *  be _level_ triggered (not _edge_ triggered).
- *
- *  This driver detects EATA boards by probes at fixed port addresses,
- *  so no BIOS32 or PCI BIOS support is required.
- *  The suggested way to detect a generic EATA PCI board is to force on it
- *  any unused EISA address, even if there are other controllers on the EISA
- *  bus, or even if you system has no EISA bus at all.
- *  Do not force any ISA address on EATA PCI boards.
- *
- *  If PCI bios support is configured into the kernel, BIOS32 is used to
- *  include in the list of i/o ports to be probed all the PCI SCSI controllers.
- *
- *  Due to a DPT BIOS "feature", it might not be possible to force an EISA
- *  address on more than a single DPT PCI board, so in this case you have to
- *  let the PCI BIOS assign the addresses.
- *
- *  The sequence of detection probes is:
- *
- *  - ISA 0x1F0;
- *  - PCI SCSI controllers (only if BIOS32 is available);
- *  - EISA/PCI 0x1C88 through 0xFC88 (corresponding to EISA slots 1 to 15);
- *  - ISA  0x170, 0x230, 0x330.
- *
- *  The above list of detection probes can be totally replaced by the
- *  boot command line option: "eata=port0,port1,port2,...", where the
- *  port0, port1... arguments are ISA/EISA/PCI addresses to be probed.
- *  For example using "eata=0x7410,0x7450,0x230", the driver probes
- *  only the two PCI addresses 0x7410 and 0x7450 and the ISA address 0x230,
- *  in this order; "eata=0" totally disables this driver.
- *
- *  After the optional list of detection probes, other possible command line
- *  options are:
- *
- *  et:y  force use of extended translation (255 heads, 63 sectors);
- *  et:n  use disk geometry detected by scsicam_bios_param;
- *  rs:y  reverse scan order while detecting PCI boards;
- *  rs:n  use BIOS order while detecting PCI boards;
- *  lc:y  enables linked commands;
- *  lc:n  disables linked commands;
- *  tm:0  disables tagged commands (same as tc:n);
- *  tm:1  use simple queue tags (same as tc:y);
- *  tm:2  use ordered queue tags (same as tc:2);
- *  mq:xx set the max queue depth to the value xx (2 <= xx <= 32).
- *
- *  The default value is: "eata=lc:n,mq:16,tm:0,et:n,rs:n".
- *  An example using the list of detection probes could be:
- *  "eata=0x7410,0x230,lc:y,tm:2,mq:4,et:n".
- *
- *  When loading as a module, parameters can be specified as well.
- *  The above example would be (use 1 in place of y and 0 in place of n):
- *
- *  modprobe eata io_port=0x7410,0x230 linked_comm=1 \
- *                max_queue_depth=4 ext_tran=0 tag_mode=2 \
- *                rev_scan=1
- *
- *  ----------------------------------------------------------------------------
- *  In this implementation, linked commands are designed to work with any DISK
- *  or CD-ROM, since this linking has only the intent of clustering (time-wise)
- *  and reordering by elevator sorting commands directed to each device,
- *  without any relation with the actual SCSI protocol between the controller
- *  and the device.
- *  If Q is the queue depth reported at boot time for each device (also named
- *  cmds/lun) and Q > 2, whenever there is already an active command to the
- *  device all other commands to the same device  (up to Q-1) are kept waiting
- *  in the elevator sorting queue. When the active command completes, the
- *  commands in this queue are sorted by sector address. The sort is chosen
- *  between increasing or decreasing by minimizing the seek distance between
- *  the sector of the commands just completed and the sector of the first
- *  command in the list to be sorted.
- *  Trivial math assures that the unsorted average seek distance when doing
- *  random seeks over S sectors is S/3.
- *  When (Q-1) requests are uniformly distributed over S sectors, the average
- *  distance between two adjacent requests is S/((Q-1) + 1), so the sorted
- *  average seek distance for (Q-1) random requests over S sectors is S/Q.
- *  The elevator sorting hence divides the seek distance by a factor Q/3.
- *  The above pure geometric remarks are valid in all cases and the
- *  driver effectively reduces the seek distance by the predicted factor
- *  when there are Q concurrent read i/o operations on the device, but this
- *  does not necessarily results in a noticeable performance improvement:
- *  your mileage may vary....
- *
- *  Note: command reordering inside a batch of queued commands could cause
- *        wrong results only if there is at least one write request and the
- *        intersection (sector-wise) of all requests is not empty.
- *        When the driver detects a batch including overlapping requests
- *        (a really rare event) strict serial (pid) order is enforced.
- *  ----------------------------------------------------------------------------
- *  The extended translation option (et:y) is useful when using large physical
- *  disks/arrays. It could also be useful when switching between Adaptec boards
- *  and DPT boards without reformatting the disk.
- *  When a boot disk is partitioned with extended translation, in order to
- *  be able to boot it with a DPT board is could be necessary to add to
- *  lilo.conf additional commands as in the following example:
- *
- *  fix-table
- *  disk=/dev/sda bios=0x80 sectors=63 heads=128 cylindres=546
- *
- *  where the above geometry should be replaced with the one reported at
- *  power up by the DPT controller.
- *  ----------------------------------------------------------------------------
- *
- *  The boards are named EATA0, EATA1,... according to the detection order.
- *
- *  In order to support multiple ISA boards in a reliable way,
- *  the driver sets host->wish_block = 1 for all ISA boards.
- */
-
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
-#include <linux/proc_fs.h>
-#include <linux/blkdev.h>
-#include <linux/interrupt.h>
-#include <linux/stat.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/ctype.h>
-#include <linux/spinlock.h>
-#include <linux/dma-mapping.h>
-#include <linux/slab.h>
-#include <asm/byteorder.h>
-#include <asm/dma.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-
-#include <scsi/scsi.h>
-#include <scsi/scsi_cmnd.h>
-#include <scsi/scsi_device.h>
-#include <scsi/scsi_host.h>
-#include <scsi/scsi_tcq.h>
-#include <scsi/scsicam.h>
-
-static int eata2x_detect(struct scsi_host_template *);
-static int eata2x_release(struct Scsi_Host *);
-static int eata2x_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
-static int eata2x_eh_abort(struct scsi_cmnd *);
-static int eata2x_eh_host_reset(struct scsi_cmnd *);
-static int eata2x_bios_param(struct scsi_device *, struct block_device *,
-			     sector_t, int *);
-static int eata2x_slave_configure(struct scsi_device *);
-
-static struct scsi_host_template driver_template = {
-	.name = "EATA/DMA 2.0x rev. 8.10.00 ",
-	.detect = eata2x_detect,
-	.release = eata2x_release,
-	.queuecommand = eata2x_queuecommand,
-	.eh_abort_handler = eata2x_eh_abort,
-	.eh_host_reset_handler = eata2x_eh_host_reset,
-	.bios_param = eata2x_bios_param,
-	.slave_configure = eata2x_slave_configure,
-	.this_id = 7,
-	.unchecked_isa_dma = 1,
-	.use_clustering = ENABLE_CLUSTERING,
-};
-
-#if !defined(__BIG_ENDIAN_BITFIELD) && !defined(__LITTLE_ENDIAN_BITFIELD)
-#error "Adjust your <asm/byteorder.h> defines"
-#endif
-
-/* Subversion values */
-#define ISA  0
-#define ESA 1
-
-#undef  FORCE_CONFIG
-
-#undef  DEBUG_LINKED_COMMANDS
-#undef  DEBUG_DETECT
-#undef  DEBUG_PCI_DETECT
-#undef  DEBUG_INTERRUPT
-#undef  DEBUG_RESET
-#undef  DEBUG_GENERATE_ERRORS
-#undef  DEBUG_GENERATE_ABORTS
-#undef  DEBUG_GEOMETRY
-
-#define MAX_ISA 4
-#define MAX_VESA 0
-#define MAX_EISA 15
-#define MAX_PCI 16
-#define MAX_BOARDS (MAX_ISA + MAX_VESA + MAX_EISA + MAX_PCI)
-#define MAX_CHANNEL 4
-#define MAX_LUN 32
-#define MAX_TARGET 32
-#define MAX_MAILBOXES 64
-#define MAX_SGLIST 64
-#define MAX_LARGE_SGLIST 122
-#define MAX_INTERNAL_RETRIES 64
-#define MAX_CMD_PER_LUN 2
-#define MAX_TAGGED_CMD_PER_LUN (MAX_MAILBOXES - MAX_CMD_PER_LUN)
-
-#define SKIP ULONG_MAX
-#define FREE 0
-#define IN_USE   1
-#define LOCKED   2
-#define IN_RESET 3
-#define IGNORE   4
-#define READY    5
-#define ABORTING 6
-#define NO_DMA  0xff
-#define MAXLOOP  10000
-#define TAG_DISABLED 0
-#define TAG_SIMPLE   1
-#define TAG_ORDERED  2
-
-#define REG_CMD         7
-#define REG_STATUS      7
-#define REG_AUX_STATUS  8
-#define REG_DATA        0
-#define REG_DATA2       1
-#define REG_SEE         6
-#define REG_LOW         2
-#define REG_LM          3
-#define REG_MID         4
-#define REG_MSB         5
-#define REGION_SIZE     9UL
-#define MAX_ISA_ADDR    0x03ff
-#define MIN_EISA_ADDR   0x1c88
-#define MAX_EISA_ADDR   0xfc88
-#define BSY_ASSERTED      0x80
-#define DRQ_ASSERTED      0x08
-#define ABSY_ASSERTED     0x01
-#define IRQ_ASSERTED      0x02
-#define READ_CONFIG_PIO   0xf0
-#define SET_CONFIG_PIO    0xf1
-#define SEND_CP_PIO       0xf2
-#define RECEIVE_SP_PIO    0xf3
-#define TRUNCATE_XFR_PIO  0xf4
-#define RESET_PIO         0xf9
-#define READ_CONFIG_DMA   0xfd
-#define SET_CONFIG_DMA    0xfe
-#define SEND_CP_DMA       0xff
-#define ASOK              0x00
-#define ASST              0x01
-
-#define YESNO(a) ((a) ? 'y' : 'n')
-#define TLDEV(type) ((type) == TYPE_DISK || (type) == TYPE_ROM)
-
-/* "EATA", in Big Endian format */
-#define EATA_SIG_BE 0x45415441
-
-/* Number of valid bytes in the board config structure for EATA 2.0x */
-#define EATA_2_0A_SIZE 28
-#define EATA_2_0B_SIZE 30
-#define EATA_2_0C_SIZE 34
-
-/* Board info structure */
-struct eata_info {
-	u_int32_t data_len;	/* Number of valid bytes after this field */
-	u_int32_t sign;		/* ASCII "EATA" signature */
-
-#if defined(__BIG_ENDIAN_BITFIELD)
-	unchar version	: 4,
-	       		: 4;
-	unchar haaval	: 1,
-	       ata	: 1,
-	       drqvld	: 1,
-	       dmasup	: 1,
-	       morsup	: 1,
-	       trnxfr	: 1,
-	       tarsup	: 1,
-	       ocsena	: 1;
-#else
-	unchar		: 4,	/* unused low nibble */
-	 	version	: 4;	/* EATA version, should be 0x1 */
-	unchar ocsena	: 1,	/* Overlap Command Support Enabled */
-	       tarsup	: 1,	/* Target Mode Supported */
-	       trnxfr	: 1,	/* Truncate Transfer Cmd NOT Necessary */
-	       morsup	: 1,	/* More Supported */
-	       dmasup	: 1,	/* DMA Supported */
-	       drqvld	: 1,	/* DRQ Index (DRQX) is valid */
-	       ata	: 1,	/* This is an ATA device */
-	       haaval	: 1;	/* Host Adapter Address Valid */
-#endif
-
-	ushort cp_pad_len;	/* Number of pad bytes after cp_len */
-	unchar host_addr[4];	/* Host Adapter SCSI ID for channels 3, 2, 1, 0 */
-	u_int32_t cp_len;	/* Number of valid bytes in cp */
-	u_int32_t sp_len;	/* Number of valid bytes in sp */
-	ushort queue_size;	/* Max number of cp that can be queued */
-	ushort unused;
-	ushort scatt_size;	/* Max number of entries in scatter/gather table */
-
-#if defined(__BIG_ENDIAN_BITFIELD)
-	unchar drqx	: 2,
-	       second	: 1,
-	       irq_tr	: 1,
-	       irq	: 4;
-	unchar sync;
-	unchar		: 4,
-	       res1	: 1,
-	       large_sg	: 1,
-	       forcaddr	: 1,
-	       isaena	: 1;
-	unchar max_chan	: 3,
-	       max_id	: 5;
-	unchar max_lun;
-	unchar eisa	: 1,
-	       pci	: 1,
-	       idquest	: 1,
-	       m1	: 1,
-	       		: 4;
-#else
-	unchar irq	: 4,	/* Interrupt Request assigned to this controller */
-	       irq_tr	: 1,	/* 0 for edge triggered, 1 for level triggered */
-	       second	: 1,	/* 1 if this is a secondary (not primary) controller */
-	       drqx	: 2;	/* DRQ Index (0=DMA0, 1=DMA7, 2=DMA6, 3=DMA5) */
-	unchar sync;		/* 1 if scsi target id 7...0 is running sync scsi */
-
-	/* Structure extension defined in EATA 2.0B */
-	unchar isaena	: 1,	/* ISA i/o addressing is disabled/enabled */
-	       forcaddr	: 1,	/* Port address has been forced */
-	       large_sg	: 1,	/* 1 if large SG lists are supported */
-	       res1	: 1,
-	       		: 4;
-	unchar max_id	: 5,	/* Max SCSI target ID number */
-	       max_chan	: 3;	/* Max SCSI channel number on this board */
-
-	/* Structure extension defined in EATA 2.0C */
-	unchar max_lun;		/* Max SCSI LUN number */
-	unchar
-			: 4,
-	       m1	: 1,	/* This is a PCI with an M1 chip installed */
-	       idquest	: 1,	/* RAIDNUM returned is questionable */
-	       pci	: 1,	/* This board is PCI */
-	       eisa	: 1;	/* This board is EISA */
-#endif
-
-	unchar raidnum;		/* Uniquely identifies this HBA in a system */
-	unchar notused;
-
-	ushort ipad[247];
-};
-
-/* Board config structure */
-struct eata_config {
-	ushort len;		/* Number of bytes following this field */
-
-#if defined(__BIG_ENDIAN_BITFIELD)
-	unchar		: 4,
-	       tarena	: 1,
-	       mdpena	: 1,
-	       ocena	: 1,
-	       edis	: 1;
-#else
-	unchar edis	: 1,	/* Disable EATA interface after config command */
-	       ocena	: 1,	/* Overlapped Commands Enabled */
-	       mdpena	: 1,	/* Transfer all Modified Data Pointer Messages */
-	       tarena	: 1,	/* Target Mode Enabled for this controller */
-	       		: 4;
-#endif
-	unchar cpad[511];
-};
-
-/* Returned status packet structure */
-struct mssp {
-#if defined(__BIG_ENDIAN_BITFIELD)
-	unchar eoc	: 1,
-	       adapter_status : 7;
-#else
-	unchar adapter_status : 7,	/* State related to current command */
-	       eoc	: 1;		/* End Of Command (1 = command completed) */
-#endif
-	unchar target_status;	/* SCSI status received after data transfer */
-	unchar unused[2];
-	u_int32_t inv_res_len;	/* Number of bytes not transferred */
-	u_int32_t cpp_index;	/* Index of address set in cp */
-	char mess[12];
-};
-
-struct sg_list {