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* remove some long abandonded serial drivers (cy, rc, rp) since 2008John-Mark Gurney2020-07-301-2242/+0
| | | | | | | | | | | Reviewed by: phk (earlier version) Reviewed by: emaste (earlier version) Reviewed by: bcr (earlier version) Reviewed by: zeising (earlier version) Differential Revision: https://reviews.freebsd.org/D25874 Notes: svn path=/head/; revision=363683
* Move most of the contents of opt_compat.h to opt_global.h.Brooks Davis2018-04-061-2/+0
| | | | | | | | | | | | | | | | | | | | | opt_compat.h is mentioned in nearly 180 files. In-progress network driver compabibility improvements may add over 100 more so this is closer to "just about everywhere" than "only some files" per the guidance in sys/conf/options. Keep COMPAT_LINUX32 in opt_compat.h as it is confined to a subset of sys/compat/linux/*.c. A fake _COMPAT_LINUX option ensure opt_compat.h is created on all architectures. Move COMPAT_LINUXKPI to opt_dontuse.h as it is only used to control the set of compiled files. Reviewed by: kib, cem, jhb, jtl Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D14941 Notes: svn path=/head/; revision=332122
* sys/dev: further adoption of SPDX licensing ID tags.Pedro F. Giffuni2017-11-271-0/+2
| | | | | | | | | | | | | | | Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Notes: svn path=/head/; revision=326255
* Revert r317446 and bring back cy(4).John Baldwin2017-04-271-0/+2242
| | | | | | | Requested by: bde Notes: svn path=/head/; revision=317509
* Remove the cy(4) driver for Cyclades serial adapters.John Baldwin2017-04-261-2242/+0
| | | | | | | | This driver has been disconnected from the build since the new tty layer was introduced in 8.0 and was never updated for new tty. Notes: svn path=/head/; revision=317446
* sys/dev: extend use of the howmany() macro when available.Pedro F. Giffuni2016-04-261-1/+1
| | | | | | | | We have a howmany() macro in the <sys/param.h> header that is convenient to re-use as it makes things easier to read. Notes: svn path=/head/; revision=298646
* o break newbus api: add a new argument of type driver_filter_t toPaolo Pisati2007-02-231-2/+3
| | | | | | | | | | | | | | | | bus_setup_intr() o add an int return code to all fast handlers o retire INTR_FAST/IH_FAST For more info: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=465712+0+current/freebsd-current Reviewed by: many Approved by: re@ Notes: svn path=/head/; revision=166901
* Catch up with new interrupt handling code.Ruslan Ermilov2005-10-261-2/+2
| | | | Notes: svn path=/head/; revision=151690
* Eliminate two unused arguments to ttycreate().Poul-Henning Kamp2005-10-161-1/+1
| | | | Notes: svn path=/head/; revision=151383
* Use generic tty code instead of local copy.Poul-Henning Kamp2004-10-051-862/+269
| | | | | | | Also divorce this driver from the sio driver. Notes: svn path=/head/; revision=136139
* Preparation commit for the tty cleanups that will follow in the nearPoul-Henning Kamp2004-07-151-1/+1
| | | | | | | | | | | | future: rename ttyopen() -> tty_open() and ttyclose() -> tty_close(). We need the ttyopen() and ttyclose() for the new generic cdevsw functions for tty devices in order to have consistent naming. Notes: svn path=/head/; revision=132226
* Introduce ttygone() which indicates that the hardware is detached.Poul-Henning Kamp2004-07-111-37/+4
| | | | | | | Move dtrwait logic to the generic TTY level. Notes: svn path=/head/; revision=131981
* - Shorten the names for the TTY related swi interrupt handlers as theJohn Baldwin2004-06-281-2/+2
| | | | | | | | | | | 'tty:' prefix is largely redundant. - Fix the priority of the low-priority TTY SWIs that are hung off of the softclock thread. Submitted by: bde (2) Notes: svn path=/head/; revision=131242
* Pick the hotchar out of the tty structure instead of caching privatePoul-Henning Kamp2004-06-261-13/+12
| | | | | | | | | | | copies. No current line disciplines have a dynamically changing hotchar, and expecting to receive anything sensible during a change in ldisc is insane so no locking of the hotchar field is necessary. Notes: svn path=/head/; revision=131134
* Remove the TIOCDCDTIMESTAMP option.Poul-Henning Kamp2004-06-221-11/+0
| | | | | | | | The RFC-2783 PPS-API (<sys/timepps.h>) provides better and more configurable service. Notes: svn path=/head/; revision=130938
* Put the pre FreeBSD-2.x tty compat code under BURN_BRIDGES.Poul-Henning Kamp2004-06-211-0/+4
| | | | Notes: svn path=/head/; revision=130892
* Second half of the dev_t cleanup.Poul-Henning Kamp2004-06-171-1/+1
| | | | | | | | | | | | | | The big lines are: NODEV -> NULL NOUDEV -> NODEV udev_t -> dev_t udev2dev() -> findcdev() Various minor adjustments including handling of userland access to kernel space struct cdev etc. Notes: svn path=/head/; revision=130640
* Do the dreaded s/dev_t/struct cdev */Poul-Henning Kamp2004-06-161-4/+4
| | | | | | | Bump __FreeBSD_version accordingly. Notes: svn path=/head/; revision=130585
* Deorbit COMPAT_SUNOS.Poul-Henning Kamp2004-06-111-2/+2
| | | | | | | | We inherited this from the sparc32 port of BSD4.4-Lite1. We have neither a sparc32 port nor a SunOS4.x compatibility desire these days. Notes: svn path=/head/; revision=130344
* Centralize the line discipline optimization determination in a functionPoul-Henning Kamp2004-06-041-15/+1
| | | | | | | | | | | | called ttyldoptim(). Use this function from all the relevant drivers. I belive no drivers finger linesw[] directly anymore, paving the way for locking and refcounting. Notes: svn path=/head/; revision=130096
* Manual edits to change linesw[]-frobbing to ttyld_*() calls.Poul-Henning Kamp2004-06-041-2/+2
| | | | Notes: svn path=/head/; revision=130095
* Machine generated patch which changes linedisc calls from accessingPoul-Henning Kamp2004-06-041-6/+6
| | | | | | | | | linesw[] directly to using the ttyld...() functions The ttyld...() functions ar inline so there is no performance hit. Notes: svn path=/head/; revision=130077
* Make the remaining serial drivers call ttyioctl() rather than callingPoul-Henning Kamp2004-06-041-8/+3
| | | | | | | the linedisc directly. Notes: svn path=/head/; revision=130057
* There is no need to explicitly call the stop function. In all likelyhoodPoul-Henning Kamp2004-06-011-1/+0
| | | | | | | ->l_close() did it and ttyclose certainly will. Notes: svn path=/head/; revision=129939
* Remove "register_t eflags; eflags = read_eflags();" because 1) it wasn'tPeter Wemm2004-05-161-4/+0
| | | | | | | subsequently used in the code, and 2) it doesn't compile on !i386. Notes: svn path=/head/; revision=129292
* Adjust pathnames for the move from i386/isa to dev/cy.Bruce Evans2004-05-011-6/+8
| | | | | | | | | Adjust staticness and a variable name for the split of cy.c into cy.c and cy_isa.c. Use the new header required for the split to avoid repeating declarations in cy_pci.c. Notes: svn path=/head/; revision=128800
* Removed bits related to isa configuration. These have been moved toBruce Evans2004-05-011-108/+0
| | | | | | | | cy_isa.c via a repo-copy of this file (except for some static declarations which will become non-static in a new header). Notes: svn path=/head/; revision=128798
* Converted the isa probe and attach to new-bus so that this driver worksBruce Evans2004-04-051-45/+81
| | | | | | | | | | | | | | | | | | | | | | | | without the (defunct) isa compatibility shims. The new-bus-specific parts are very similar to the ones for the pci probe and attach. This was held up too long waiting for a repo copy to src/sys/dev/cy, so I decided to fix the files in their old place. This gives easier to read and merge diffs anyway. The "count" line in src/sys/conf/files won't be changed until after the repo copy, so old kernel configs that specify a count need not be (and must not be) changed until then. The count is just ignored in the driver. One unfinished detail is dynamic allocation of arrays with <count> and (<count> * 32) entries, and iteration over the arrays. This is now kludged with a fixed count of 10 (up to 10 cards with up to 32 ports each). Prodded by: imp Submitted by: mostly by imp Approved by: imp Notes: svn path=/head/; revision=127885
* Moved initialization of the lock from the (isa) probe function to theBruce Evans2004-04-051-6/+6
| | | | | | | | | | common attach function so that the lock gets initialized in all cases. This fixes breakage of the initialization of the lock in the pci case in rev.1.135 (between the releases of 5.1 and 5.2). The lock is only used in the SMP case, so this bug was not always fatal. Notes: svn path=/head/; revision=127883
* Device megapatch 4/6:Poul-Henning Kamp2004-02-211-1/+2
| | | | | | | | | | | Introduce d_version field in struct cdevsw, this must always be initialized to D_VERSION. Flip sense of D_NOGIANT flag to D_NEEDGIANT, this involves removing four D_NOGIANT flags and adding 145 D_NEEDGIANT flags. Notes: svn path=/head/; revision=126080
* Device megapatch 3/6:Poul-Henning Kamp2004-02-211-3/+0
| | | | | | | | | | | | | | | Add missing D_TTY flags to various drivers. Complete asserts that dev_t's passed to ttyread(), ttywrite(), ttypoll() and ttykqwrite() have (d_flags & D_TTY) and a struct tty pointer. Make ttyread(), ttywrite(), ttypoll() and ttykqwrite() the default cdevsw methods for D_TTY drivers and remove the explicit initializations in various drivers cdevsw structures. Notes: svn path=/head/; revision=126078
* Device megapatch 1/6:Poul-Henning Kamp2004-02-211-2/+0
| | | | | | | | | | Free approx 86 major numbers with a mostly automatically generated patch. A number of strategic drivers have been left behind by caution, and a few because they still (ab)use their major number. Notes: svn path=/head/; revision=126076
* Fixed breakage of the pci case of the cy driver by the new interruptBruce Evans2003-12-021-31/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | code. Both the driver and the new code were wrong. Driver interrupt handlers are supposed to take "void *vsc" arg, but some including all COMPAT_ISA drivers and the pci part of the cy driver want an "int unit" arg. They got this using bogus casts of function pointers which should have kept working despite their bogusness. However, the new interrupt code doesn't honor requests to pass an arg of ((void *)0), so things are very broken if the arg is actually a representation of unit 0. The fix is to use a normal "void *vsc" arg for the pci case and a wrapper for the COMPAT_ISA case (of the cy driver). This cleans up new-busification of the pci case but takes the COMPAT_ISA case a little further from new-bus. The corresponding bug for the COMPAT_ISA case has already been fixed similarly using a wrapper in compat_isa.c and we need another wrapper just to undo that. Fixed some directly related style bugs (mainly by removing compatibility cruft). cy.c: Fixed an indirectly related old bug in cyattach_common(). A wrong status was returned in the unlikely event that malloc() failed. Approved by: re (scottl) Notes: svn path=/head/; revision=123104
* Restored the call to schedsofttty() (now spelled swi_sched(...)) again.Bruce Evans2003-11-161-14/+19
| | | | | | | | | | | Its restoration in rev.1.102 was mistranslated to the equivalent of setsofttty() in rev.1.105. This increased overheads by causing a context switch to the SWI handler after almost every interrupt. The increase was approx. 50% on a Celeron 366 (from 23 usec to 34 usec per interrupt). Notes: svn path=/head/; revision=122799
* Localized the cy driver's locking.Bruce Evans2003-11-161-23/+20
| | | | Notes: svn path=/head/; revision=122771
* MFsio (sio.c 1.413: cleaned up and fixed setting of speeds in comparam()).Bruce Evans2003-09-271-23/+12
| | | | | | | | | This is just a cleanup here (modulo rev.1.108 of kern/tty.c), since the input speed can be different from to output speed and extra code to handle both speeds naturally handled all cases. Notes: svn path=/head/; revision=120512
* Quick fix for bitrot in locking in the SMP case. cd_getreg() andBruce Evans2003-09-271-4/+24
| | | | | | | | | | | | | cd_setreg() were still using !(read_eflags() & PSL_I) as the condition for the lock hidden by COM_LOCK() (if any) being held. This worked when spin mutexes and/or critical_enter() used hard interrupt disablement, but it has caused recursion on the non-recursive mutex com_mtx since all relevant interrupt disablement became soft. The recursion is harmless unless there are other bugs, but it breaks an invariant so it is fatal if spinlocks are witnessed. Notes: svn path=/head/; revision=120504
* Use __FBSDID().David E. O'Brien2003-06-021-2/+3
| | | | Notes: svn path=/head/; revision=115703
* Make nokqfilter() return the correct return value.Poul-Henning Kamp2003-03-031-1/+1
| | | | | | | Ditch the D_KQFILTER flag which was used to prevent calling NULL pointers. Notes: svn path=/head/; revision=111821
* Gigacommit to improve device-driver source compatibility betweenPoul-Henning Kamp2003-03-031-14/+10
| | | | | | | | | | | | | | | | branches: Initialize struct cdevsw using C99 sparse initializtion and remove all initializations to default values. This patch is automatically generated and has been tested by compiling LINT with all the fields in struct cdevsw in reverse order on alpha, sparc64 and i386. Approved by: re(scottl) Notes: svn path=/head/; revision=111815
* Remove #include <sys/dkstat.h>Poul-Henning Kamp2003-02-161-1/+0
| | | | Notes: svn path=/head/; revision=111002
* Change the suser() API to take advantage of td_ucred as well as do aJohn Baldwin2002-04-011-3/+3
| | | | | | | | | | | | | | | general cleanup of the API. The entire API now consists of two functions similar to the pre-KSE API. The suser() function takes a thread pointer as its only argument. The td_ucred member of this thread must be valid so the only valid thread pointers are curthread and a few kernel threads such as thread0. The suser_cred() function takes a pointer to a struct ucred as its first argument and an integer flag as its second argument. The flag is currently only used for the PRISON_ROOT flag. Discussed on: smp@ Notes: svn path=/head/; revision=93593
* Fixed some style bugs in the removal of __P(()). The main ones wereBruce Evans2002-03-231-22/+21
| | | | | | | | | not removing tabs before "__P((", and not outdenting continuation lines to preserve non-KNF lining up of code with parentheses. Switch to KNF formatting and/or rewrap the whole prototype in some cases. Notes: svn path=/head/; revision=93024
* Remove __P.Alfred Perlstein2002-03-201-24/+24
| | | | Notes: svn path=/head/; revision=92765
* Initialize a variable bogusly to avoid a gcc bug that causes a spuriousBruce Evans2002-02-261-0/+3
| | | | | | | warning. Notes: svn path=/head/; revision=91314
* Change the preemption code for software interrupt thread schedules andJohn Baldwin2002-01-051-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mutex releases to not require flags for the cases when preemption is not allowed: The purpose of the MTX_NOSWITCH and SWI_NOSWITCH flags is to prevent switching to a higher priority thread on mutex releease and swi schedule, respectively when that switch is not safe. Now that the critical section API maintains a per-thread nesting count, the kernel can easily check whether or not it should switch without relying on flags from the programmer. This fixes a few bugs in that all current callers of swi_sched() used SWI_NOSWITCH, when in fact, only the ones called from fast interrupt handlers and the swi_sched of softclock needed this flag. Note that to ensure that swi_sched()'s in clock and fast interrupt handlers do not switch, these handlers have to be explicitly wrapped in critical_enter/exit pairs. Presently, just wrapping the handlers is sufficient, but in the future with the fully preemptive kernel, the interrupt must be EOI'd before critical_exit() is called. (critical_exit() can switch due to a deferred preemption in a fully preemptive kernel.) I've tested the changes to the interrupt code on i386 and alpha. I have not tested ia64, but the interrupt code is almost identical to the alpha code, so I expect it will work fine. PowerPC and ARM do not yet have interrupt code in the tree so they shouldn't be broken. Sparc64 is broken, but that's been ok'd by jake and tmm who will be fixing the interrupt code for sparc64 shortly. Reviewed by: peter Tested on: i386, alpha Notes: svn path=/head/; revision=88900
* Modify the critical section API as follows:John Baldwin2001-12-181-71/+56
| | | | | | | | | | | | | | | | | | | | | | - The MD functions critical_enter/exit are renamed to start with a cpu_ prefix. - MI wrapper functions critical_enter/exit maintain a per-thread nesting count and a per-thread critical section saved state set when entering a critical section while at nesting level 0 and restored when exiting to nesting level 0. This moves the saved state out of spin mutexes so that interlocking spin mutexes works properly. - Most low-level MD code that used critical_enter/exit now use cpu_critical_enter/exit. MI code such as device drivers and spin mutexes use the MI wrappers. Note that since the MI wrappers store the state in the current thread, they do not have any return values or arguments. - mtx_intr_enable() is replaced with a constant CRITICAL_FORK which is assigned to curthread->td_savecrit during fork_exit(). Tested on: i386, alpha Notes: svn path=/head/; revision=88088
* Call to cdevsw_add() no longer needed.Poul-Henning Kamp2001-11-041-1/+0
| | | | Notes: svn path=/head/; revision=86008
* KSE Milestone 2Julian Elischer2001-09-121-10/+10
| | | | | | | | | | | | | | | | | Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha Notes: svn path=/head/; revision=83366
* Fixed minor numbers when there is more than one cy card.Bruce Evans2001-08-131-6/+15
| | | | | | | | | PR: 19256 Submitted by: initial version by yokota MFC after: 1 week Notes: svn path=/head/; revision=81580
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