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History log of /src/sys/arch/atari/dev/lpt.c
RevisionDateAuthorComments
 1.40  06-Jan-2023  tsutsui TAB/spaces/indents cleanup.
 1.39  26-Jun-2022  tsutsui Make local devsw functions static.

No visible regression on TT030.
 1.38  03-Sep-2018  riastradh Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)
 1.37  25-Jul-2014  dholland branches: 1.37.26; 1.37.28;
Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.
 1.36  16-Mar-2014  dholland branches: 1.36.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.
 1.35  27-Oct-2012  chs branches: 1.35.2;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.
 1.34  13-Apr-2010  tsutsui branches: 1.34.8; 1.34.18;
Include "ioconf.h" to declare struct cfdriver foo_cd.
 1.33  12-Apr-2010  tsutsui Replace old MD sicallback functions with MI softint(9).
 1.32  23-Nov-2009  rmind branches: 1.32.2; 1.32.4;
Use lwp_getpcb() on m68k ports, clean from struct user usage.
 1.31  08-Jul-2009  tsutsui Merge local <atari/atari/intr.h> into common <machine/intr.h>.
 1.30  13-Jun-2008  cegger use device_lookup_private to get softc
 1.29  07-Mar-2008  cube branches: 1.29.2; 1.29.4; 1.29.6; 1.29.8;
Split the softc from the device_t for all lpt(4) variants and attachments
except the ppbus stuff (which doesn't compile) and ulpt(4) which is
unrelated and can be dealt with separately.

As usual, it comes with related cosmetic changes.
 1.28  17-Oct-2007  garbled branches: 1.28.12; 1.28.16;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.
 1.27  08-Oct-2007  ad Merge brelse() changes from the vmlocking branch.
 1.26  09-Jul-2007  ad branches: 1.26.8; 1.26.10; 1.26.12;
Merge some of the less invasive changes from the vmlocking branch:

- kthread, callout, devsw API changes
- select()/poll() improvements
- miscellaneous MT safety improvements
 1.25  04-Mar-2007  christos branches: 1.25.2; 1.25.4; 1.25.10;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.24  11-Dec-2005  christos branches: 1.24.26;
merge ktrace-lwp.
 1.23  15-Jul-2003  lukem branches: 1.23.16;
__KERNEL_RCSID()
 1.22  23-Oct-2002  jdolecek branches: 1.22.6;
merge kqueue branch into -current

kqueue provides a stateful and efficient event notification framework
currently supported events include socket, file, directory, fifo,
pipe, tty and device changes, and monitoring of processes and signals

kqueue is supported by all writable filesystems in NetBSD tree
(with exception of Coda) and all device drivers supporting poll(2)

based on work done by Jonathan Lemon for FreeBSD
initial NetBSD port done by Luke Mewburn and Jason Thorpe
 1.21  02-Oct-2002  thorpej Use CFATTACH_DECL().
 1.20  27-Sep-2002  thorpej Declare all cfattach structures const.
 1.19  06-Sep-2002  gehenna Merge the gehenna-devsw branch into the trunk.

This merge changes the device switch tables from static array to
dynamically generated by config(8).

- All device switches is defined as a constant structure in device drivers.

- The new grammer ``device-major'' is introduced to ``files''.

device-major <prefix> char <num> [block <num>] [<rules>]

- All device major numbers must be listed up in port dependent majors.<arch>
by using this grammer.

- Added the new naming convention.
The name of the device switch must be <prefix>_[bc]devsw for auto-generation
of device switch tables.

- The backward compatibility of loading block/character device
switch by LKM framework is broken. This is necessary to convert
from block/character device major to device name in runtime and vice versa.

- The restriction to assign device major by LKM is completely removed.
We don't need to reserve LKM entries for dynamic loading of device switch.

- In compile time, device major numbers list is packed into the kernel and
the LKM framework will refer it to assign device major number dynamically.
 1.18  16-Jan-2001  thomas branches: 1.18.4; 1.18.8; 1.18.16;
Let lpmatch recognice the printer.
 1.17  29-Mar-2000  leo Nuke a bunch of cf_unit abuses.
 1.16  23-Mar-2000  thorpej New callout mechanism with two major improvements over the old
timeout()/untimeout() API:
- Clients supply callout handle storage, thus eliminating problems of
resource allocation.
- Insertion and removal of callouts is constant time, important as
this facility is used quite a lot in the kernel.

The old timeout()/untimeout() API has been removed from the kernel.
 1.15  06-Apr-1999  pk branches: 1.15.2; 1.15.8;
Move advertisement text into a comment of its own.
 1.14  15-Aug-1998  mycroft branches: 1.14.6;
Make copyright notices with my name consistent.
 1.13  15-Jan-1998  leo Make this compile again after the latest config changes.
 1.12  12-Jan-1998  thorpej Update for changes to config.
 1.11  30-Jul-1997  leo Rename lpt to lp on some places to avoid botches between files.isa and
files.atari.
 1.10  26-Dec-1996  leo branches: 1.10.10;
Add intr_establish/disestablish functions. Currently only the lpt-driver
is converted to use them...
 1.9  20-Dec-1996  leo Get rid of BROKEN_INDIRECT_CONFIG
 1.8  20-Dec-1996  leo Get rid of BROKEN_INDIRECT_CONFIG
 1.7  17-Nov-1996  leo Plug some spl-holes in the lp-driver. Also be more strict in protecting
the register access to the psg-chip. The combination of those bugs
caused the printer to print garbage sometimes.
 1.6  13-Oct-1996  christos backout previous kprintf changes
 1.5  11-Oct-1996  leo - Fix configuration name of 'lpt'
- add 'pcibus' as a mainbus device.
 1.4  11-Oct-1996  christos printf -> kprintf, sprintf -> ksprintf
 1.3  14-May-1996  leo Remove a line of debugging code.
 1.2  18-Apr-1996  leo Yet more prototyping and -Wall fixes.
 1.1  27-Mar-1996  leo Add centronics printer driver.
 1.10.10.1  23-Aug-1997  thorpej Update marc-pcmcia branch from trunk.
 1.14.6.1  07-Apr-1999  pk branches: 1.14.6.1.2;
Pull up from trunk: copyright text warts.
 1.14.6.1.2.1  21-Jun-1999  thorpej Sync w/ -current.
 1.15.8.1  21-Dec-1999  wrstuden Initial commit of recent changes to make DEV_BSIZE go away.

Runs on i386, needs work on other arch's. Main kernel routines should be
fine, but a number of the stand programs need help.

cd, fd, ccd, wd, and sd have been updated. sd has been tested with non-512
byte block devices. vnd, raidframe, and lfs need work.

Non 2**n block support is automatic for LKM's and conditional for kernels
on "options NON_PO2_BLOCKS".
 1.15.2.2  18-Jan-2001  bouyer Sync with head (for UBC+NFS fixes, mostly).
 1.15.2.1  20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.18.16.1  17-May-2002  gehenna Add device switch.
 1.18.8.3  11-Nov-2002  nathanw Catch up to -current
 1.18.8.2  18-Oct-2002  nathanw Catch up to -current.
 1.18.8.1  17-Sep-2002  nathanw Catch up to -current.
 1.18.4.1  10-Oct-2002  jdolecek sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work
 1.22.6.4  17-Jan-2005  skrll Adapt to branch.
 1.22.6.3  21-Sep-2004  skrll Fix the sync with head I botched.
 1.22.6.2  18-Sep-2004  skrll Sync with HEAD.
 1.22.6.1  03-Aug-2004  skrll Sync with HEAD
 1.23.16.4  17-Mar-2008  yamt sync with head.
 1.23.16.3  27-Oct-2007  yamt sync with head.
 1.23.16.2  03-Sep-2007  yamt sync with head.
 1.23.16.1  21-Jun-2006  yamt sync with head.
 1.24.26.1  12-Mar-2007  rmind Sync with HEAD.
 1.25.10.2  16-Oct-2007  garbled Sync with HEAD
 1.25.10.1  03-Oct-2007  garbled Sync with HEAD
 1.25.4.1  11-Jul-2007  mjf Sync with head.
 1.25.2.2  09-Oct-2007  ad Sync with head.
 1.25.2.1  15-Jul-2007  ad Sync with head.
 1.26.12.1  14-Oct-2007  yamt sync with head.
 1.26.10.2  23-Mar-2008  matt sync with HEAD
 1.26.10.1  06-Nov-2007  matt sync with HEAD
 1.26.8.1  26-Oct-2007  joerg Sync with HEAD.

Follow the merge of pmap.c on i386 and amd64 and move
pmap_init_tmp_pgtbl into arch/x86/x86/pmap.c. Modify the ACPI wakeup
code to restore CR4 before jumping back into kernel space as the large
page option might cover that.
 1.28.16.2  29-Jun-2008  mjf Sync with HEAD.
 1.28.16.1  03-Apr-2008  mjf Sync with HEAD.
 1.28.12.1  24-Mar-2008  keiichi sync with head.
 1.29.8.1  18-Jun-2008  simonb Sync with head.
 1.29.6.1  23-Jun-2008  wrstuden Sync w/ -current. 34 merge conflicts to follow.
 1.29.4.4  11-Aug-2010  yamt sync with head.
 1.29.4.3  11-Mar-2010  yamt sync with head
 1.29.4.2  18-Jul-2009  yamt sync with head.
 1.29.4.1  04-May-2009  yamt sync with head.
 1.29.2.1  17-Jun-2008  yamt sync with head.
 1.32.4.1  30-May-2010  rmind sync with head
 1.32.2.1  30-Apr-2010  uebayasi Sync with HEAD.
 1.34.18.2  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.34.18.1  20-Nov-2012  tls Resync to 2012-11-19 00:00:00 UTC
 1.34.8.2  22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.34.8.1  30-Oct-2012  yamt sync with head
 1.35.2.1  18-May-2014  rmind sync with head
 1.36.2.1  10-Aug-2014  tls Rebase.
 1.37.28.1  10-Jun-2019  christos Sync with HEAD
 1.37.26.1  06-Sep-2018  pgoyette Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)

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