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History log of /src/sys/dev/pci/cz.c
RevisionDateAuthorComments
 1.66  09-Feb-2024  andvar fix spelling mistakes, mainly in comments and log messages.
 1.65  26-Oct-2022  riastradh cz(4): Convert to ttylock/ttyunlock.
 1.64  09-Dec-2018  jdolecek use pci_intr_establish_xname() everywhere
 1.63  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macppc/if_gm.c (superseded by gem(4))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!)
 1.62  07-Jul-2016  msaitoh branches: 1.62.16; 1.62.18;
KNF. Remove extra spaces. No functional change.
 1.61  15-Nov-2014  christos branches: 1.61.2;
centralize the dialout/call unit macros.
 1.60  25-Jul-2014  dholland Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.
 1.59  29-Mar-2014  christos branches: 1.59.2;
make pci_intr_string and eisa_intr_string take a buffer and a length
instead of relying in local static storage.
 1.58  16-Mar-2014  dholland 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.
 1.57  12-Sep-2013  martin Eliminate an unused variable - someone with docs and test hardware please
check the XXX introduced.
 1.56  27-Oct-2012  chs branches: 1.56.2;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.
 1.55  24-Apr-2011  rmind branches: 1.55.4; 1.55.14;
Rename ttymalloc() to tty_alloc(), and ttyfree() to tty_free() for
consistency. Remove some unnecessary malloc.h inclusions as well.
 1.54  26-Jul-2010  jym branches: 1.54.2;
Add PAE to ALL kernel, so that most paddr_t format string errors get caught
during compilation.

While here, fix the compilation for ALL.
 1.53  26-Nov-2009  njoly branches: 1.53.2; 1.53.4;
Cleanup interrupt establish error messages. Do not mix
aprint_error/aprint_normal/printf calls for a single line.
 1.52  12-May-2009  cegger use device_private().
"looks good" ad@
XXX for the device_t/softc split, please check the driver that no cases have been missed.
 1.51  06-May-2009  cegger struct device * -> device_t, no functional changes intended.
 1.50  06-May-2009  cegger struct cfdata * -> cfdata_t, no functional changes intended.
 1.49  08-Jun-2008  tsutsui branches: 1.49.12;
Replace device_lookup() with device_lookup_private() on getting softc
for future device_t/softc spilt.
 1.48  10-Apr-2008  cegger branches: 1.48.2; 1.48.4; 1.48.6;
use aprint_*_dev and device_xname
 1.47  19-Nov-2007  ad branches: 1.47.14;
- Factor out too many copies of the same bit of tty code.
- Fix another tty signalling/wakeup problem.
 1.46  12-Nov-2007  ad Call ttwakeup() with tty_lock held.
 1.45  09-Jul-2007  ad branches: 1.45.6; 1.45.8; 1.45.12; 1.45.14;
Merge some of the less invasive changes from the vmlocking branch:

- kthread, callout, devsw API changes
- select()/poll() improvements
- miscellaneous MT safety improvements
 1.44  08-May-2007  garbled Add a missing brace in cztty_receive inside a ifdef HOSTRAMCODE. This
would randomly cause internal compiler errors while compiling pmppc.
 1.43  04-Mar-2007  christos branches: 1.43.2; 1.43.4;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.42  16-Nov-2006  christos branches: 1.42.4;
__unused removal on arguments; approved by core.
 1.41  12-Oct-2006  christos - sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386
 1.40  01-Oct-2006  elad More from Matt Fleming:

Adapt to KAUTH_DEVICE_TTY_PRIVSET and KAUTH_DEVICE_TTY_OPEN.
 1.39  01-Oct-2006  elad Adapt MD code to KAUTH_DEVICE_TTY_OPEN, batch #2 from Matt Fleming, thanks!

Also, add forgotten splx() calls in some places.
 1.38  21-Jul-2006  ad branches: 1.38.4; 1.38.6;
- Use the LWP cached credentials where sane.
- Minor cosmetic changes.
 1.37  14-May-2006  elad integrate kauth.
 1.36  28-Mar-2006  thorpej Use device_unit().
 1.35  05-Mar-2006  christos branches: 1.35.2; 1.35.4;
cleanup more SET/CLR/ISSET lossage
 1.34  11-Dec-2005  christos branches: 1.34.4; 1.34.6; 1.34.8;
merge ktrace-lwp.
 1.33  06-Sep-2005  kleink Change the driver open function's conditional for overriding exclusive tty
use from checking the proc's uid to suser(9), and account for the use of
privileges. Noted by David Holland in PR kern/31126.
 1.32  28-Jun-2005  thorpej branches: 1.32.2;
Use ANSI function decls and static.
 1.31  30-May-2005  christos - const poisoning
- avoid variable shadowing.
 1.30  27-Feb-2005  perry nuke trailing whitespace
 1.29  27-Oct-2003  chs branches: 1.29.8; 1.29.10;
uninitialized variables
 1.28  29-Jun-2003  fvdl branches: 1.28.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.
 1.27  28-Jun-2003  darrenr Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V
 1.26  05-Feb-2003  perry "Utilize" has exactly the same meaning as "use," but it is more
difficult to read and understand. Most manuals of English style
therefore say that you should use "use".
 1.25  31-Jan-2003  thorpej Use aprint_*().
 1.24  23-Oct-2002  jdolecek 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
 1.23  02-Oct-2002  thorpej Add trailing ; to CFATTACH_DECL.
 1.22  30-Sep-2002  thorpej Use CFATTACH_DECL().
 1.21  27-Sep-2002  thorpej Declare all cfattach structures const.
 1.20  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.
 1.19  17-Mar-2002  atatat branches: 1.19.4;
Convert ioctl code to use EPASSTHROUGH instead of -1 or ENOTTY for
indicating an unhandled "command". ERESTART is -1, which can lead to
confusion. ERESTART has been moved to -3 and EPASSTHROUGH has been
placed at -4. No ioctl code should now return -1 anywhere. The
ioctl() system call is now properly restartable.
 1.18  12-Jan-2002  tsutsui Call malloc(9) with M_ZERO flag instead of memset() after malloc().
 1.17  13-Nov-2001  lukem add RCSID
 1.16  02-May-2001  scw branches: 1.16.2; 1.16.4;
Add `l_poll' to `struct linesw' and provide an xxxpoll() entry point
in each tty driver to indirect through it.

This allows tty line-disciplines to handle poll(2) system calls.
 1.15  20-Jan-2001  thorpej branches: 1.15.2;
Use device_lookup() in cztty_getttysoftc().
 1.14  20-Jan-2001  thorpej Garbage-collect some unused macros.
 1.13  20-Jan-2001  thorpej Don't deref NULL when searching for the correct board.
 1.12  28-Dec-2000  sommerfeld Change pci_intr_map to get interrupt source information from a "struct
pci_attach_args *" instead of from four separate parameters which in
all cases were extracted from the same "struct pci_attach_args".

This both simplifies the driver api, and allows for alternate PCI
interrupt mapping schemes, such as one using the tables described in
the Intel Multiprocessor Spec which describe interrupt wirings for
devices behind pci-pci bridges based on the device's location rather
the bridge's location.

Tested on alpha and i386; welcome to 1.5Q
 1.11  02-Nov-2000  eeh branches: 1.11.2;
Adapt to the new line discipline scheme.
 1.10  28-Jul-2000  thorpej Handle booting without a serial expander box connected.
 1.9  14-Jun-2000  thorpej Make sure we use firmware->host communication channel in cz_intr(), from
Bill Studenmund.
 1.8  09-Jun-2000  wrstuden Adapt to going back to decemal device numbering.
 1.7  09-Jun-2000  wrstuden Rather than assinging 64 tty's per pci card, assign tty's as found.
Cyclades says driver should work with up to 128 tty's per pci card
even though they only support 64 now. Also matches FreeBSD behavior.

Print located tty's using new tty naming scheme - ttyCZ?? where ?? are
two hex letters.

Make firmware load on macppc - one le32toh() was missing.
 1.6  24-May-2000  thorpej branches: 1.6.2;
Update from Bill Studenmund <wrstuden@zembu.com>:
- Note that the FreeBSD driver distributed by Cyclades served as
documentation on how the board works.
- Use the wait-until-pending-I/O-completes-before-loading-parameters
command in czttyparam().
- Pass BREAKs up to the tty later properly.
- Garbage-collect some debugging code.
 1.5  23-May-2000  thorpej Typo in previous.
 1.4  23-May-2000  thorpej Update from Bill Studenmund <wrstuden@zembu.com>:

Correctly send and receive BREAKs -- still needs to do something
intelligent with them. Some additional debugging goo.
 1.3  19-May-2000  thorpej In tiocm_to_cztty(), use SET() instead of CLR() in the
TIOCMBIS case. "Oops!"
 1.2  18-May-2000  thorpej Fix an inverted test.
 1.1  17-May-2000  thorpej Add a device driver for the Cyclades-Z series of intelligent multi-port
serial boards. Written by Jason R. Thorpe and Bill Studenmund.
 1.6.2.1  22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.11.2.5  11-Feb-2001  bouyer Sync with HEAD.
 1.11.2.4  05-Jan-2001  bouyer Sync with HEAD
 1.11.2.3  22-Nov-2000  bouyer Sync with HEAD.
 1.11.2.2  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.
 1.11.2.1  02-Nov-2000  bouyer file cz.c was added on branch thorpej_scsipi on 2000-11-20 11:42:17 +0000
 1.15.2.7  11-Nov-2002  nathanw Catch up to -current
 1.15.2.6  18-Oct-2002  nathanw Catch up to -current.
 1.15.2.5  17-Sep-2002  nathanw Catch up to -current.
 1.15.2.4  01-Apr-2002  nathanw Catch up to -current.
(CVS: It's not just a program. It's an adventure!)
 1.15.2.3  28-Feb-2002  nathanw Catch up to -current.
 1.15.2.2  14-Nov-2001  nathanw Catch up to -current.
 1.15.2.1  21-Jun-2001  nathanw Catch up to -current.
 1.16.4.3  13-Oct-2001  fvdl Revert the t_dev -> t_devvp change in struct tty. The way that tty
structs are currently used (especially by console ttys) aren't
ready for it, and this will require quite a few changes.
 1.16.4.2  26-Sep-2001  fvdl * add a VCLONED vnode flag that indicates a vnode representing a cloned
device.
* rename REVOKEALL to REVOKEALIAS, and add a REVOKECLONE flag, to pass
to VOP_REVOKE
* the revoke system call will revoke all aliases, as before, but not the
clones
* vdevgone is called when detaching a device, so make it use REVOKECLONE
to get rid of all clones as well
* clean up all uses of VOP_OPEN wrt. locking.
* add a few VOPS to spec_vnops that need to do something when it's a
clone vnode (access and getattr)
* add a copy of the vnode vattr structure of the original 'master' vnode
to the specinfo of a cloned vnode. could possibly redirect getattr to
the 'master' vnode, but this has issues with revoke
* add a vdev_reassignvp function that disassociates a vnode from its
original device, and reassociates it with the specified dev_t. to be
used by cloning devices only, in case a new minor is allocated.
* change all direct references in drivers to v_devcookie and v_rdev
to vdev_privdata(vp) and vdev_rdev(vp). for diagnostic purposes
when debugging race conditions that still exist wrt. locking and
revoking vnodes.
* make the locking state of a vnode consistent when passed to
d_open and d_close (unlocked). locked would be better, but has
some deadlock issues
 1.16.4.1  07-Sep-2001  thorpej Commit my "devvp" changes to the thorpej-devvp branch. This
replaces the use of dev_t in most places with a struct vnode *.

This will form the basic infrastructure for real cloning device
support (besides being architecurally cleaner -- it'll be good
to get away from using numbers to represent objects).
 1.16.2.4  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
 1.16.2.3  23-Jun-2002  jdolecek catch up with -current on kqueue branch
 1.16.2.2  11-Feb-2002  jdolecek Sync w/ -current.
 1.16.2.1  10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.19.4.1  16-May-2002  gehenna Add the character device switch.
Replace the local major search function with devsw API.
 1.28.2.6  10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.28.2.5  04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.28.2.4  21-Sep-2004  skrll Fix the sync with head I botched.
 1.28.2.3  18-Sep-2004  skrll Sync with HEAD.
 1.28.2.2  03-Aug-2004  skrll Sync with HEAD
 1.28.2.1  02-Jul-2003  darrenr Apply the aborted ktrace-lwp changes to a specific branch. This is just for
others to review, I'm concerned that patch fuziness may have resulted in some
errant code being generated but I'll look at that later by comparing the diff
from the base to the branch with the file I attempt to apply to it. This will,
at the very least, put the changes in a better context for others to review
them and attempt to tinker with removing passing of 'struct lwp' through
the kernel.
 1.29.10.1  19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.29.8.1  29-Apr-2005  kent sync with -current
 1.32.2.5  07-Dec-2007  yamt sync with head
 1.32.2.4  15-Nov-2007  yamt sync with head.
 1.32.2.3  03-Sep-2007  yamt sync with head.
 1.32.2.2  30-Dec-2006  yamt sync with head.
 1.32.2.1  21-Jun-2006  yamt sync with head.
 1.34.8.4  11-Aug-2006  yamt sync with head
 1.34.8.3  24-May-2006  yamt sync with head.
 1.34.8.2  01-Apr-2006  yamt sync with head.
 1.34.8.1  13-Mar-2006  yamt sync with head.
 1.34.6.2  01-Jun-2006  kardel Sync with head.
 1.34.6.1  22-Apr-2006  simonb Sync with head.
 1.34.4.1  09-Sep-2006  rpaulo sync with head
 1.35.4.2  24-May-2006  tron Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.
 1.35.4.1  31-Mar-2006  tron Merge 2006-03-31 NetBSD-current into the "peter-altq" branch.
 1.35.2.4  06-May-2006  christos - Move kauth_cred_t declaration to <sys/types.h>
- Cleanup struct ucred; forward declarations that are unused.
- Don't include <sys/kauth.h> in any header, but include it in the c files
that need it.

Approved by core.
 1.35.2.3  19-Apr-2006  elad sync with head.
 1.35.2.2  10-Mar-2006  elad generic_authorize() -> kauth_authorize_generic().
 1.35.2.1  08-Mar-2006  elad Adapt to kernel authorization KPI.
 1.38.6.2  10-Dec-2006  yamt sync with head.
 1.38.6.1  22-Oct-2006  yamt sync with head
 1.38.4.1  18-Nov-2006  ad Sync with head.
 1.42.4.2  17-May-2007  yamt sync with head.
 1.42.4.1  12-Mar-2007  rmind Sync with HEAD.
 1.43.4.1  11-Jul-2007  mjf Sync with head.
 1.43.2.2  01-Jul-2007  ad Adapt to callout API change.
 1.43.2.1  27-May-2007  ad Sync with head.
 1.45.14.2  08-Dec-2007  mjf Sync with HEAD.
 1.45.14.1  19-Nov-2007  mjf Sync with HEAD.
 1.45.12.2  21-Nov-2007  bouyer Sync with HEAD
 1.45.12.1  13-Nov-2007  bouyer Sync with HEAD
 1.45.8.1  09-Jan-2008  matt sync with HEAD
 1.45.6.2  21-Nov-2007  joerg Sync with HEAD.
 1.45.6.1  14-Nov-2007  joerg Sync with HEAD.
 1.47.14.2  29-Jun-2008  mjf Sync with HEAD.
 1.47.14.1  02-Jun-2008  mjf Sync with HEAD.
 1.48.6.1  23-Jun-2008  wrstuden Sync w/ -current. 34 merge conflicts to follow.
 1.48.4.4  11-Aug-2010  yamt sync with head.
 1.48.4.3  11-Mar-2010  yamt sync with head
 1.48.4.2  16-May-2009  yamt sync with head
 1.48.4.1  04-May-2009  yamt sync with head.
 1.48.2.1  17-Jun-2008  yamt sync with head.
 1.49.12.1  13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.53.4.2  31-May-2011  rmind sync with head
 1.53.4.1  05-Mar-2011  rmind sync with head
 1.53.2.1  17-Aug-2010  uebayasi Sync with HEAD.
 1.54.2.1  06-Jun-2011  jruoho Sync with HEAD.
 1.55.14.3  03-Dec-2017  jdolecek update from HEAD
 1.55.14.2  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.55.14.1  20-Nov-2012  tls Resync to 2012-11-19 00:00:00 UTC
 1.55.4.2  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")
 1.55.4.1  30-Oct-2012  yamt sync with head
 1.56.2.1  18-May-2014  rmind sync with head
 1.59.2.1  10-Aug-2014  tls Rebase.
 1.61.2.1  09-Jul-2016  skrll Sync with HEAD
 1.62.18.1  10-Jun-2019  christos Sync with HEAD
 1.62.16.2  26-Dec-2018  pgoyette Sync with HEAD, resolve a few conflicts
 1.62.16.1  06-Sep-2018  pgoyette Sync with HEAD

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

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