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* Device megapatch 4/6:phk2004-02-212-2/+4
| | | | | | | | 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.
* Device megapatch 3/6:phk2004-02-212-6/+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.
* Device megapatch 1/6:phk2004-02-212-4/+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.
* Fixed some minor indentation bugs.bde2003-12-021-12/+12
| | | | Approved by: re (scottl)
* Fixed breakage of the pci case of the cy driver by the new interruptbde2003-12-023-79/+72
| | | | | | | | | | | | | | | | | | | | | | | | | | 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)
* Restored the call to schedsofttty() (now spelled swi_sched(...)) again.bde2003-11-162-28/+38
| | | | | | | | 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).
* Localized the cy driver's locking.bde2003-11-162-46/+40
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* MFsio (sio.c 1.413: cleaned up and fixed setting of speeds in comparam()).bde2003-09-272-46/+24
| | | | | | 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.
* Quick fix for bitrot in locking in the SMP case. cd_getreg() andbde2003-09-272-8/+48
| | | | | | | | | | 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.
* Use __FBSDID().obrien2003-06-111-2/+3
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* Use __FBSDID().obrien2003-06-022-4/+6
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* - Express hard dependencies on bus (pci, isa, pccard) andmdodd2003-04-151-0/+1
| | | | | | | | network layer (ether). - Don't abuse module names to facilitate ifconfig module loading; such abuse isn't really needed. (And if we do need type information associated with a module then we should make it explicit and not use hacks.)
* Make nokqfilter() return the correct return value.phk2003-03-032-2/+2
| | | | Ditch the D_KQFILTER flag which was used to prevent calling NULL pointers.
* Gigacommit to improve device-driver source compatibility betweenphk2003-03-032-28/+20
| | | | | | | | | | | | | 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)
* Remove #include <sys/dkstat.h>phk2003-02-162-2/+0
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* Change the suser() API to take advantage of td_ucred as well as do ajhb2002-04-012-6/+6
| | | | | | | | | | | | 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@
* Fixed some style bugs in the removal of __P(()). The main ones werebde2002-03-232-46/+44
| | | | | | 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.
* Remove __P.alfred2002-03-202-50/+50
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* Remove __P.alfred2002-03-201-2/+2
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* Work around a PLX9050 bug that causes system lockup in certain systems,bde2002-03-171-3/+4
| | | | | | | | | depending on the MMIO addresses allocated to the board. PR: 30965, 20845 (maybe) Submitted by: Daniela Squassoni <daniela@cyclades.com> Tested by: Arjan Knepper <arjan@jak.nl> Scott Klement <klemscot@klements.com>
* Initialize a variable bogusly to avoid a gcc bug that causes a spuriousbde2002-02-262-0/+6
| | | | warning.
* Merged cy_pcireg.h into the one file that uses it (cy_pci.c).bde2002-02-021-1/+16
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* Fixed breakage of interrupt setup in previous commit. It used anbde2002-02-021-0/+2
| | | | uninitialized variable in the !CY_PCI_FASTINTR case (*blush*).
* Change the preemption code for software interrupt thread schedules andjhb2002-01-052-20/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* Modify the critical section API as follows:jhb2001-12-182-142/+112
| | | | | | | | | | | | | | | | | | | - 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
* Call to cdevsw_add() no longer needed.phk2001-11-042-2/+0
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* KSE Milestone 2julian2001-09-122-20/+20
| | | | | | | | | | | | | | 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
* Fixed minor numbers when there is more than one cy card.bde2001-08-132-12/+30
| | | | | | PR: 19256 Submitted by: initial version by yokota MFC after: 1 week
* Use ttymalloc() instead of a static array of `struct tty'. This willbde2001-08-132-30/+4
| | | | | | | be a regression until `pstat -t' actually understands the results of ttymalloc(). Submitted by: mostly by yokota
* Remove unneeded includes of sys/ipl.h and machine/ipl.h.jhb2001-05-152-2/+0
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* Undo part of the tangle of having sys/lock.h and sys/mutex.h included inmarkm2001-05-012-4/+8
| | | | | | | | | | | other "system" header files. Also help the deprecation of lockmgr.h by making it a sub-include of sys/lock.h and removing sys/lockmgr.h form kernel .c files. Sort sys/*.h includes where possible in affected files. OK'ed by: bde (with reservations)
* Typo fix. s/criticale_t/critical_t/peter2001-03-282-2/+2
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* Switch from save/disable/restore_intr() to critical_enter/exit().jhb2001-03-282-198/+156
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* Send the remains (such as I have located) of "block major numbers" tophk2001-03-262-2/+0
| | | | the bit-bucket.
* Extend kqueue down to the device layer.jlemon2001-02-152-4/+6
| | | | Backwards compatible approach suggested by: peter
* RIP <machine/lock.h>.markm2001-02-112-2/+42
| | | | | | | Some things needed bits of <i386/include/lock.h> - cy.c now has its own (only) copy of the COM_(UN)LOCK() macros, and IMASK_(UN)LOCK() has been moved to <i386/include/apic.h> (AKA <machine/apic.h>). Reviewed by: jhb
* Revert the spin mutex for the cy(4) driver.jhb2001-02-092-138/+304
| | | | Requested by: bde
* - Use a spin mutex instead of COM_LOCK, since COM_LOCK is going away.jhb2001-02-092-330/+166
| | | | | | The same name from the sio(4) driver was used and an appropriate dictionary item added at the top to reduce diffs. - Catch up to the new swi API.
* Converted to new-bus.bde2001-02-011-57/+85
| | | | Reviewed by: imp
* Added used include of <sys/mutex.h>. The SMP case was broken bybde2001-01-302-0/+2
| | | | | | incompletely converting simplelocks to mutexes (COM_LOCK() is supposed to hide the SMP locking internals, but it now depends on mutex interfaces being visible).
* Disable cy - it is now completely broken and needs non-trivial work.peter2001-01-251-5/+0
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* Special case for compiling LINT - just give a warning and continue on.peter2001-01-171-0/+5
| | | | | At least we have a chance at getting test compile coverage for the rest of the kernel now.
* Convert more malloc+bzero to malloc+M_ZERO.dwmalone2000-12-082-4/+2
| | | | | Submitted by: josh@zipperup.org Submitted by: Robert Drehmel <robd@gmx.net>
* Move suser() and suser_xxx() prototypes and a related #define fromphk2000-10-292-2/+0
| | | | | | | | | <sys/proc.h> to <sys/systm.h>. Correctly document the #includes needed in the manpage. Add one now needed #include of <sys/systm.h>. Remove the consequent 48 unused #includes of <sys/proc.h>.
* - Catch up to new software interrupt code.jhb2000-10-252-6/+6
| | | | | | - Add a missing curly brace. Noticed by: phk
* - Overhaul the software interrupt code to use interrupt threads for eachjhb2000-10-252-30/+32
| | | | | | | | | | | | | | | | | | | type of software interrupt. Roughly, what used to be a bit in spending now maps to a swi thread. Each thread can have multiple handlers, just like a hardware interrupt thread. - Instead of using a bitmask of pending interrupts, we schedule the specific software interrupt thread to run, so spending, NSWI, and the shandlers array are no longer needed. We can now have an arbitrary number of software interrupt threads. When you register a software interrupt thread via sinthand_add(), you get back a struct intrhand that you pass to sched_swi() when you wish to schedule your swi thread to run. - Convert the name of 'struct intrec' to 'struct intrhand' as it is a bit more intuitive. Also, prefix all the members of struct intrhand with 'ih_'. - Make swi_net() a MI function since there is now no point in it being MD. Submitted by: cp
* Remove unneeded #include <machine/clock.h>phk2000-10-152-2/+0
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* Don't depend on <machine/cpufunc.h> unnecessarily including <machine/lock.h>.bde2000-10-122-4/+0
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* Use schedsofttty() again (SMPng casualty with intentionally wrong fixbde2000-10-082-10/+2
| | | | | | | in rev.1.101). Made this file compile again after move of stuff from <machine.ipl.h> to <sys/ipl.h>.
* Make LINT link.phk2000-09-162-0/+8
| | | | cy driver is broken post SMPng.
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