[PATCH 3/5] documentation: Remove drivers/char/README.ecpa

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To: linux-kernel@vger.kernel.org
Date:	Wed, 3 Nov 2004 09:23:01 -0600

Remove unneeded file from drivers/char.

Signed-off-by: James Nelson <james4765@gmail.com>

diff -urN --exclude='*~' linux-2.6.9-original/drivers/char/README.epca linux-2.6.9/drivers/char/README.epca
--- linux-2.6.9-original/drivers/char/README.epca 2004-10-18 17:55:20.000000000 -0400
+++ linux-2.6.9/drivers/char/README.epca 1969-12-31 19:00:00.000000000 -0500
@@ -1,532 +0,0 @@
-user.doc
-Digi International driver package for the PC/Xe, PC/Xi, PC/Xr, PC/Xem as well
-the EISA and PCI variants of these boards where applicable.
-Copyright (C) 1996 Digi International. Written by Ronnie Sanford digilnux@dgii.com
-
- 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 of the License, 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.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not write to the Free Software Foundation, Inc.,
- 675 Mass Ave, Cambridge, MA 02139, USA.
-
-
-This document describes the software used with the Digi/Linux driver package.
-The four user programs listed below are described in this document:
-
- 1. digiConfig -> Application that configures the Digi driver.
-
- 2. digiDload -> Application which initializes the Digi hardware.
-
- 3. buildPCI -> Application which provides the user a method of
- building device nodes for PCI devices.
-
- 4. ditty -> Application which provides the user a method of
- configuring terminal options on Digi hardware.
-
-
-
---------------------------------------------------------------------------
-1. Configuring driver/kernel for Digi products
---------------------------------------------------------------------------
-
- The Digi driver must be configured each time Digi hardware is added
- or removed. There are two supported methods of doing this. The
- first method configures the driver dynamically at boot time but requires
- the user to utilize the lilo loader. This method is the preffered method
- as it does not require the rebuilding of the kernel. In order to use lilo
- to configure Digi boards at boot time an appropriate append command should
- be added to /etc/lilo.conf below the appropriate label decleration.
- See footer 4. The append commands format is a string of comma separated
- identifiers or integers used to configure supported boards. These six
- values in order are:
-
- Enable/Disable this card or Override,
- Type of card: PC/Xe (AccelePort) (0), PC/Xeve (1), PC/Xem or PC/Xr (2),
- EISA/Xem (3), PC/Xe (64K) (4), PC/Xi (5).
- Enable/Disable alternate pin arrangement,
- Number of ports on this card,
- I/O Port where card is configured (in HEX if using string identifiers),
- Base of memory window (in HEX if using string identifiers)
-
- A sample append command is given below which if used would configure and
- enable a PC/Xe with 8 ports, at i/o address 200, memory address 0xd0000
- with alt pin turned off. The lilo.conf file should look like this:
-
- image = /vmlinuz
- root = /dev/hda2
- label = vmlinuz
- append="digiepca=E,PC/Xe,D,8,200,D0000"
-
- likewise the below will perform the same function:
-
- image = /vmlinuz
- root = /dev/hda2
- label = vmlinuz
- append="digiepca=1,0,0,8,512,851968"
-
- Note:
-
- PCI boards are auto-detected and configured (Hence their codes are
- not given here). Do not attempt to configure PCI boards with the lilo
- append command.
-
- If configuration data has been specified by using digiConfig (Described
- below), and you wish to override this configuration using lilo without
- specifying a specific card (Example if there are PCI cards in the system)
- the following override command will accomplish this:
-
- -> append="digiepca=2"
-
- If lilo is not enabled, the second method of configuring Digi hardware
- will have to be used. digiConfig is an application that can be used
- to inform the system of any additions, deletions, or modifications
- involving Digi hardware. To use this method the operator executes
- digiConfig anytime an EISA or ISA card is added that he wishes to use.
- This routine is also used to remove cards from the system, and to modify
- parameters of those cards already present in the system. Upon being
- executed digiConfig modifies files accessed by the Digi driver. To make
- these changes permanent; the operating system must be recompiled. After
- the operating system has been recompiled and booted, the changes made with
- digiConfig will be introduced to the user. This program MUST be executed
- every time Digi EISA/ISA hardware configuration changes. Note, it is not
- necessary to execute digiConfig in order to configure the Digi PCI cards.
- These cards are self-identifying and will be recognized by the driver.
- They cannot be displayed using digiConfig nor will digiConfig build the
- device nodes their device nodes. See footer 1.
-
- To execute digiConfig; simply type: digiConfig
-
- The application will query you for the type, memory address, port
- address, number of ports, alt pin disposition and status of each board
- that exist on the system. Note, currently this driver only supports
- PC/Xe, PC/Xeve, PC/Xi, PC/Xr, and PC/Xem as well as their EISA and PCI
- implementations if applicable. All supported cards (Other than PCI) that
- are present should be registered via digiConfig. See footer 2.
-
- After all cards have been configured select exit. The system will then
- inform you if any changes have been made, and ask you if it is okay to
- make these changes permanent. If the data entered is correct, select okay.
- Selecting cancel will prevent the changes from becoming active. digiConfig
- can then be re-executed to configure the system again.
-
---------------------------------------------------------------------------
-2. Initializing Digi hardware with digiDload
---------------------------------------------------------------------------
-
- digiDload is the application executed after the Digi driver has been
- loaded. It is responsible for initializing the hardware and leaving
- it in a state such that the Digi board may be operated by the user.
- The application may be placed anywhere on the path, but its related
- support files must be located in /etc/digi. The related files are:
-
- sxfep.bin
- sxbios.bin
- xxfep.bin
- xxbios.bin
-
- The format for this command is "digiDload [v]". If given the "v"
- option turns on verbosity. If not given the application runs in quite
- mode. To execute the program simply type:
-
- digiDload
-
- Upon completion digiDload will generate the below message:
-
- "digiDload complete: Card initialized"
-
- At this point the card is configured and ready for normal usage. See
- technotes.doc for information on how how ports are determined and
- assigned.
-
---------------------------------------------------------------------------
-3. Build PCI device nodes with buildPCI
---------------------------------------------------------------------------
-
- buildPCI is an application useful for building the necessary device nodes
- for Digi PCI cards. It is reccomended that this tool be used because the
- current digiConfig application does not provide this function for PCI cards
- (Though it does build device nodes for non-PCI cards). To use this program
- execute the following:first install the driver, and execute digiDload (See above). After digiDload
- has successfully loaded, execute the following:
-
- buildPCI <arg1> <arg2>
-
- Where arg1 is the number of ports connected to Digi cards that are not PCI
- (As shown by the digiConfig utility), and arg2 is the number of ports
- connected to Digi cards that are PCI.
-
- Note, buildPCI only has to be ran once to build the necessary device
- nodes. Though this program may be executed at anytime, we reccomend
- delaying execution until the first time you install the package and after
- digiDload has been executed.
-
---------------------------------------------------------------------------
-4. Setting Terminal Options with ditty
---------------------------------------------------------------------------
-
-ditty is a utility program that sets and displays the terminal options
-for Digi intelligent serial products. See man ditty for detailed information.
-
-
-Footnotes:
-
-1. The 1.2.x kernel does not provide a method of mapping the high
- addresses (Normally higher than RAM) associated with PCI. For this
- reason, this driver disables PCI support while running under the 1.2.x
- kernels.
-
-2. PCI cards should not and cannot be registered with digiConfig. After
- the driver has been loaded buildPCI may be executed to construct the
- necessary device nodes. This step is not necessary for system not
- having Digi PCI cards.
-
-3. This is because we forsee a time when buildPCI may auto-detect the
- available Digi PCI cards and this would only work if the program is
- executed after digiDload.
-
-4. A complete example is given in install.doc.
-
--------------CHANGES--------------------
-
-All changes should be recorded here. All changes should be explained in
-verbose detail.
------------------------------------------------------------------------
-Programmer : Ronnie Sanford
-Date : June 1, 1996
-Description (Verbose) : Initial release of driver package.
-Files affected : all
-Release version : 1.0.0f (BETA)
------------------------------------------------------------------------
------------------------------------------------------------------------
-Programmer : Ronnie Sanford
-Date : August 7, 1996
-Description (Verbose) : Made several modifications to provide PCI and EISA
- support:
-
- 1. We now allocate the termios structures based on
- the maximum number of channels that COULD be
- available to the system. We no longer use the
- number of channels declared in epcaconfig.h
- (NBDEVS) as the total channel number. This is
- because this value does not represent channels
- available to potential PCI cards. This new
- larger value is also passed back to the os in
- the num field of tty_driver.
-
- 2. Added code to copy the previous board structure
- (Now called static_boards) into a new local
- copy of the boards structure. This has been
- done so that PCI cards may be added to this
- board array and later referenced (And even
- queried.).
-
- 3. Added code to pc_init that checks for supported
- PCI cards. If found this code initializes a new
- entry into the drivers local board structure
- with the PCI cards address, and type, etc.. It
- also bumps the card count (num_cards).
-
- 4. Modified code in post_fep_init so that when this
- routine is executed the number of ports supported
- by a particular PCI card will be determined and
- loaded into the board structure. It would be
- much better if this code was placed in pc_init
- (Because we could then report to the os the true
- number of ports available; not just the max), but
- since the card has to be booted to determine the
- number of ports it supports, we are forced to do it
- after DIGI_INIT has called post_fep_init. In the
- future we may attempt to read the num ports
- attached directly (address 0x1ac).
-
- 5. Added board types to epca.h in support of various
- PCI boards (Some of which do not exist yet).
- Added procedures for these boards throughout the
- code. Note, windowing is not necessary for PCI
- boards.
-
- 6. Added code supporting the EISA/XEM. This included
- modifying epca.h with the new board type and
- adding this type into the driver. The EISA/XEM
- is basically identical to the PC/XEM, other than
- it's base address does not have to be (And cannot
- be configured directly).
-
- 7. Modified digiConfig to prompt for EISA/XEM cards.
-
-Files affected : epca.c, epca.h, digi1.h, digiConfig
-Release version : 1.0.0g (BETA)
------------------------------------------------------------------------
------------------------------------------------------------------------
-Programmer : Ronnie Sanford
-Date : August 21, 1996
-Description (Verbose) : Made the following modifications:
-
- 1. A problem affecting hard flow control was found
- in the termios2digi_h routine. Specifically,
- when the user activated hard flow control using
- the CRTSCTS specification, the values used to
- program hard flow control on the board were
- incorrect. The solution was to change a line
- that read "res |= ((ch->m_dtr) | (ch->m_rts));"
- to "res |= ((ch->m_cts) | (ch->m_rts));" This
- line only applies if cflag & CRTSCTS. Special
- thanks to Matt Robinson (matt@mania.com.au) who
- found and fixed this problem.
-
- 2. In previous betas the cud device was set to CLOCAL
- on driver boot up. Likewise the ttyD device was
- set to ~CLOCAL. This has been fixed in this driver.
- Now ttyD is CLOCAL and cud is ~CLOCAL. The fix
- for this can be found in pc_init.
-
- 3. In ditty.c many changes were made to eliminate bugs
- and warning messages. Two ioctl calls were eliminated
- as well a problem involving using the returned baud
- index to determine the drivers baud rate. Newer
- Linux kernels support higher baud rates by using
- 0x1000 bit. When the returned value (ored with
- 0x1000) was used to reference our fbaud table a
- serious memory problem occurred. This has been fixed.
-
- 4. Added a request_region call to post_fep_init. This
- should cause the i/o ports being used to be
- registered with proc.
-
- 5. Modified digiConfig to set all cud and ttyD devices
- to read/write all permission.
-
- 6. Developed a new apps called buildPCI that provides
- an easy way to build device nodes for PCI cards.
-
- 7. Modified user.doc and technotes.doc document the
- use of buildPCI.
-
-Files affected : epca.c, ditty.c, digiConfig, user.doc, technotes.doc
-Release version : 1.0.0 (Official release)
------------------------------------------------------------------------
-Programmer : Ronnie Sanford
-Date : August 21, 1996
-Description (Verbose) : Made the following modifications:
-
- 1. Removed code from pc_close which closes the
- drivers line discipline and restores its original
- line discipline. This is currently unnecessary,
- though future fast cook enhancements may require
- this.
-
- 2. Removed code in block_til_ready that set the
- asyncflags to either ASYNC_CALLOUT_ACTIVE, or
- ASYNC_NORMAL_ACTIVE. This code was redundant
- as it already existed in block_til_ready.
-
- 3. Added code in block_til_ready to cause a return
- prior to schedule being called if the device
- was a CALLOUT device. CALLOUT devices never
- block on CD. (This was a serious bug that
- prevented the CALLOUT devices (ttyD) from
- functioning properly in some instances.
-
- Make a change in the MODEMCHG_IND case of doevent
- such that it does not require ASYNC_CALLOUT_ACTIVE
- or ASYNC_NORMAL_ACTIVE to be set in order to
- unblock an open (Using wait_interruptible).
-
- Thanks to Mike McLagan (mike.mclagan@linux.org)
- for diagnosing and fixing this problem.
-
- 4. Made changes to the disposition of CLOCAL on
- both SERIAL NORMAL and CALLOUT devices. Both
- device types now have CLOCAL active at default.
- This may be changed with a stty command.
-
- 5. Made changes to digiConfig such that it checks
- major.h (If valid) for the correct major
- numbers to use.
-
-Files affected : epca.c, digiConfig
-Release version : 1.0.1a
-
-
------------------------------------------------------------------------
-Programmer : Ronnie Sanford
-Date : September 17, 1996
-Description (Verbose) : Made the following modifications:
-
- 1. Modified pc_open such that it no longer checks
- the cflag value returned by termios2digi_c for
- CLOCAL. Digi hardware does not use this value
- and thus termios2digi_c rightly screens this
- value out. This driver checks for CLOCAL using
- the drivers cflag value as known by the Linux OS.
- (The value passed into termios2digi_c)
-
- 2. Modified termios2digi_c to screen out the
- CBAUDEX in CBAUD. This error caused parity to
- automaticaly be enabled on at higher baud rates.
-
-
- 3. Added the "disable_bh()" call to the shutdown
- subroutine. Hopefully this will allow the driver
- to correctly clean up after itself when used as a
- module.
-
- 4. Added support for the PC/XI and 64K PC/XE cards.
- This involved primarily modifying digiDload to
- initialize and boot the new cards; however
- driver modifications were also required to
- provide the proper windowing for the newly
- supported cards. (Code was also added to
- determine the memory segment of the XI card as
- that card may have more than 64K. Currently
- digiDload assumes a 64K XI card.)
-
- 5. Added subroutine called epca_setup that can be
- called during LILO boot up. This provides the
- user an easy way to change cards; without
- running digiConfig and without recompiling the
- kernel. Added code in pc_init and pc_open to
- support the epca_setup routine. pc_init checks
- the liloconfig flag (Which is set by epca_setup)
- to determine if the driver is using the LILO
- arguments. If not pc_init loads the board data
- found in epcaconfig.h; if so it DOESN'T load
- epcaconfig data depending on epca_setup to handle
- board configuration. pc_open has been modified
- such that it checks to ensure that no errors
- occurred during the LILO boot process. If a
- user attempts to boot the driver (via. LILO)
- with incorrect data, the open will fail.
-
- 6. Modified the windowing routines pcxe_rxwinon
- and pcxe_txwinon routines. A bug existed such
- that those routines checked to see if the rxwin
- and txwin flags were reset. If so they assumed
- the board was an XI or 64K XE. Furthermore since
- these flags were never initialized in our driver
- sometimes they were 0 and therefore caused a
- memory fault (Or at least a window overrun). This
- code has been removed since the pcxe shares
- nothing in common with the 64K XI and XE.
-
- 7. Added code in pc_init to set the memory_seg for
- the various boards. This code was necessary to
- correct a bug in the PCXE, PCXEVE code where
- receive and transmit pointers were being calculated
- from an uninitialized variable (memory_seg).
-
- 8. Modified digiConfig to allow 64K PC/XI and 64K
- PC/XE cards to be configured.
-
- 9. Made changes to support the new 2.1.x development
- kernel. In particular this required changing all
- references to vremap to ioremap.
-
- 10. Modified digiConfig such that it now generates
- node names corresponding to their internal
- as opposed to the label on the port itself. Nodes
- (ttyD?? and cud??) now start at 0. Example:
- ttyD0 and cud0 represent port 1 on any supported
- Digi product. A similar change has been made
- in buildPCI.c.
-
- 12. At the early portion of post_fep_init if a PCI
- card is detected a warning message could be given
- incorrectly if 64 ports were attached to a PCI
- card. The below line :
-
- epcaassert(bd->numports > 64,"PCI returned a invalid number of ports");
-
- was changed to :
-
- epcaassert(bd->numports <= 64,"PCI returned a invalid number of ports");
-
- Remember that epcaassert checks for NOT true.
- Special thanks to Daniel Taylor for fixing this.
-
- 13. Modified the epcaparam routine. In version 100
- and 101a there was a line that looked like the
- below:
-
- if (ch->omodem != mval)
-
- The problem with this line was that the first time
- through omodem was not initialized. Secondly, since
- many TIOC commands did not alter mval (They use
- a different variable) changes made by these commands
- could be lost. This line was changed to:
-
- mval ^= ch->modemfake & (mval ^ ch->modem);
-
- if (ch->omodem ^ mval)
-
- 14. Modified digiConfig in such a way that it checks
- the version number of the kernel and if it finds
- a 2.x.x kernel or higher it reads the necessary
- major numbers for cud and ttyD devices from major.h.
- This was also done in prior versions but these
- versions required a #define which identified the
- kernel as a version which did not have major numbers
- assigned to Digi systems. This #define is no
- longer required allowing the same source tree for
- multiple kernel releases.
-
- 15. Used macros to replace kernel specific calls such
- as put_fs_long, get_fs_long, put_user, and get_user
- the kernel version is now detected and the macro
- is defined as to correspond with the kernel it
- is being compiled into. Again this was done to
- allow one source tree for multiple kernel releases.
-
- 16. Added support for the new 2.1.x development kernels
- to digiInstall.
-
-Files affected : epca.c, digiConfig
-Release version : 1.1.0
------------------------------------------------------------------------
-Programmer : Daniel Taylor
-Date : April 25, 1997
-Description (Verbose) : Updated driver:
- 1. Fixed DCD bug. (&tq scheduler)
- 2. Removed BH handler code, as it was only handling
- hangups, and not being called for that.
- 3. Namespace cleanup (DIGI_TIMER2 => DIGI_TIMER)
- 4. Updated to 2.1.36, removed #ifdefs for earlier
- kernel revisions.
-Files affected : epca.c
-Release version : 1.1.1 (BETA)
------------------------------------------------------------------------
-Programmer : Daniel Taylor
-Date : March 11, 1999
-Description (Verbose) : Updated driver:
- 1. Simultaneous data and modem change events were
- resulting in the modem change events not being
- recognized. Fixed.
- 2. Modified pc_info device name to work better
- with devfs.
-Files affected : epca.c
-Release version : 1.3.0-K
------------------------------------------------------------------------
-Programmer : Jeff Garzik
-Date : February 26, 2000
-Description (Verbose) : Updated driver:
- 1. Use new kernel PCI interfaces.
- 2. Updated list of includes.
-Files affected : epca.c
-Release version : 1.3.0.1-LK
------------------------------------------------------------------------
-Programmer : Arjan van de Ven <adve@oce.nl>
-Date : March 10, 2000
-Description (Verbose) : Fixed includes to make it actually compile
- for kernel 2.3.51
-Files affected : epca.c
-Release version : 1.3.0.2-LK
------------------------------------------------------------------------
-
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