Commit Graph

2479 Commits

Author SHA1 Message Date
nyan
1bad2bb46b Initialize bus_space_handle_t with zero (for PC-98). 2000-11-13 11:48:38 +00:00
marcel
1a7266b24d Make MINSIGSTKSZ machine dependent, and have the sigaltstack
syscall compare against a variable sv_minsigstksz in struct
sysentvec as to properly take the size of the machine- and
ABI dependent struct sigframe into account.

The SVR4 and iBCS2 modules continue to have a minsigstksz of
8192 to preserve behavior. The real values (if different) are
not known at this time. Other ABI modules use the real
values.

The native MINSIGSTKSZ is now defined as follows:

Arch		MINSIGSTKSZ
----		-----------
alpha		    4096
i386		    2048
ia64		   12288

Reviewed by: mjacob
Suggested by: bde
2000-11-09 08:25:48 +00:00
asmodai
4635a4076c Fix some further english grammar and typo's. 2000-11-08 12:00:05 +00:00
asmodai
7c7cfd2165 Fix typo's: UPGRADE_CPU_HW_CACHE -> CPU_UPGRADE_HW_CACHE 2000-11-08 11:58:07 +00:00
msmith
6a0bbcf690 Hack to work around a probe which will lock up at least some i450GX-based
systems.

From the PR:

 When 'probe.slot' is PCI_SLOTMAX (== 31) and 'probe.func' is 7,
 call to 'pci_cfgread()' here and machine suddenly hangs up.
 I don't know why...  (or 450GX chipset's bug?)

PR:		i386/20379
Submitted by:	Masayuki FUKUI <fukui@sonic.nm.fujitsu.co.jp>
2000-11-08 11:25:15 +00:00
imp
8de1a9bdc0 Make the ISA nic section look like the other device sections with
comments on the same line like so:
	device		foo		# FooInc Brand NetEther cards

Also, move the wireless NIC cards to their own section.

Add commented out wl driver in wireless section.

Remove obsolete or redundant comments about some of the wireless cards
that used to apply but don't since we've removed 'at foobus'.

There should be no functional changes in this change.
2000-11-07 21:20:52 +00:00
imp
994812ef77 Minor ordering changes to make more sections strictly alphabetical. 2000-11-07 21:06:57 +00:00
semenu
053ff12a41 Synced tx(4) driver descriptions + ``device tx'' line moved to the
list of drivers using miibus.

PR:		kern/22556
2000-11-07 20:22:19 +00:00
alfred
3e03c96525 Protect against an infinite loop when prefaulting pages. This can
happen when the vm system maps past the end of an object or tries
to map a zero length object, the pmap layer misses the fact that
offsets wrap into negative numbers and we get stuck.

Found by: Joost Pol aka Nohican <nohican@marcella.niets.org>
Submitted by: tegge
2000-11-07 18:31:16 +00:00
wpaul
fc831555eb The vx driver no longer needs the PCI compat shims. Also should now
work on the alpha (at least the PCI part should).
2000-11-07 00:58:35 +00:00
msmith
0898051fd7 Improve the PCI interrupt routing code. Now the process is as follows:
- Look for a hardwired interrupt in the routing table for this
   bus/device/pin (we already did this).
 - Look for another device with the same link byte which has a hardwired
   interrupt.
 - Look for a PCI device matching an entry with the same link byte
   which has already been assigned an interrupt, and use that.
 - Look for a routable interrupt listed in the "PCI only" interrupts
   field and use that.
 - Pick the first interrupt that's marked as routable and use that.
2000-11-02 00:37:45 +00:00
phk
fe76c75f16 Deprecate devsw->d_bmaj entirely.
This removes support for booting current kernels with very old bootblocks.

Device driver writers: Please remove initializations for the d_bmaj
field in your cdevsw{}.
2000-10-31 10:58:14 +00:00
phk
db841f6fcc Remove unneeded <stddef.h> #includes. 2000-10-29 16:57:42 +00:00
phk
94a5006c9a Remove unneeded #include <sys/proc.h> lines. 2000-10-29 13:57:19 +00:00
nik
58e629e1a5 Add a brief comment telling people to retain 'device miibus' as necessary.
PR:		docs/21981
Submitted by:	Matthew Emmerton <matt@gsicomp.on.ca>
2000-10-28 22:32:17 +00:00
msmith
64e150eaa4 FreeBSD-specific OSD (operating system dependant) modules for the Intel
ACPICA code.
2000-10-28 06:56:15 +00:00
phk
2e92b95197 Revert two experimental changes which escaped from my devel machine. 2000-10-28 06:55:12 +00:00
jhb
94e76ebf96 The x86 atomic operations are already locked, so they do not need an
additional locked instruction to guarantee a write barrier for the acquire
variants.

Approved by:	dfr
Pointy hat to:	jhb
2000-10-28 00:28:15 +00:00
jhb
a6921bdf2e Fix a couple of whitespace nits. 2000-10-27 21:45:50 +00:00
phk
54ca48450c Convert all users of fldoff() to offsetof(). fldoff() is bad
because it only takes a struct tag which makes it impossible to
use unions, typedefs etc.

Define __offsetof() in <machine/ansi.h>

Define offsetof() in terms of __offsetof() in <stddef.h> and <sys/types.h>

Remove myriad of local offsetof() definitions.

Remove includes of <stddef.h> in kernel code.

NB: Kernelcode should *never* include from /usr/include !

Make <sys/queue.h> include <machine/ansi.h> to avoid polluting the API.

Deprecate <struct.h> with a warning.  The warning turns into an error on
01-12-2000 and the file gets removed entirely on 01-01-2001.

Paritials reviews by:   various.
Significant brucifications by:  bde
2000-10-27 11:45:49 +00:00
bde
0409d20c48 Declare or #define per-cpu globals in <machine/globals.h> in all cases.
The i386 UP case was messily different.
2000-10-27 08:30:59 +00:00
markm
6458d733a9 As the blocking model has seems to be troublesome for many, disable
it for now with an option.

This option is already deprecated, and will be removed when the
entropy-harvesting code is fast enough to warrant it.
2000-10-27 06:06:04 +00:00
jhb
03e6157448 - Add atomic_cmpset_{acq_,rel_,}_long
- Add in atomic operations for 8-bit, 16-bit, and 32-bit integers
2000-10-25 21:56:16 +00:00
ps
fd78b03668 Fast interrupts have no associated process, therefore do not try
and schedule it.  This fixes booting machines with broken MP tables.
2000-10-25 10:40:20 +00:00
n_hibma
71ac041c16 The USB scanner driver. To be used together with SANE. 2000-10-25 10:34:38 +00:00
jhb
ff18363a3e - Overhaul the software interrupt code to use interrupt threads for each
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
2000-10-25 05:19:40 +00:00
jhb
dd3e4087e8 Don't dink with interrupts in vm_page_zero_idle(). This code assumed it
was being called with interrupts disabled, when it was actually being called
with them enabled.

Pointed out by:	tegge
2000-10-23 23:32:36 +00:00
non
8e8d8815fa Add PC-Card/ISA SCSI host adpater drivers from NetBSD/pc98
(a NetBSD port for NEC PC-98x1 machines). They are ncv for NCR 53C500,
nsp for Workbit Ninja SCSI-3, and stg for TMC 18C30 and 18C50.

I thank NetBSD/pc98 and bsd-nomads people.

Obtained from:	NetBSD/pc98
2000-10-23 12:55:51 +00:00
jhb
ab67e1548e Define the mtx_legal2block() macro used in the witness code that managed
to get lost during the MI mutex conversion.

Reported by:    Steve Kargl <sgk@troutmask.apl.washington.edu>
2000-10-20 22:44:06 +00:00
ache
caca8aad57 Return -10000 in pci_hostb_probe to allow agp driver (disabled otherwise) 2000-10-20 15:40:05 +00:00
ache
3035f34e63 Add i815 Host to Hub 2000-10-20 15:14:51 +00:00
jhb
d944886e4d Catch up to moving headers:
- machine/ipl.h -> sys/ipl.h
- machine/mutex.h -> sys/mutex.h
2000-10-20 07:58:15 +00:00
jhb
d24b54adc7 Actually harvest interrupt threads when the last handler is removed from a
thread.
2000-10-20 07:46:12 +00:00
jhb
ab2c7bf248 - machine/mutex.h -> sys/mutex.h
- Use cpu_throw() instead of cpu_switch() during cpu_exit() since we don't
  need to save our previous state.
2000-10-20 07:43:55 +00:00
jhb
8e37d20156 - machine/mutex.h -> sys/mutex.h
- Catch up to the MI mutex structure due to saveflags,saveipl,savepsr
  becoming saveintr.
2000-10-20 07:38:44 +00:00
jhb
0da9c86e7f - machine/mutex.h -> sys/mutex.h
- Use MUTEX_DECLARE() and MTX_COLD for Giant and sched_lock.
2000-10-20 07:32:48 +00:00
jhb
ed47777d05 - machine/mutex.h -> sys/mutex.h
- machine/ipl.h -> sys/ipl.h
- Use MUTEX_DECLARE() for clock_lock
2000-10-20 07:31:00 +00:00
jhb
f671832d76 - Make the mutex code almost completely machine independent. This greatly
reducues the maintenance load for the mutex code.  The only MD portions
  of the mutex code are in machine/mutex.h now, which include the assembly
  macros for handling mutexes as well as optionally overriding the mutex
  micro-operations.  For example, we use optimized micro-ops on the x86
  platform #ifndef I386_CPU.
- Change the behavior of the SMP_DEBUG kernel option.  In the new code,
  mtx_assert() only depends on INVARIANTS, allowing other kernel developers
  to have working mutex assertiions without having to include all of the
  mutex debugging code.  The SMP_DEBUG kernel option has been renamed to
  MUTEX_DEBUG and now just controls extra mutex debugging code.
- Abolish the ugly mtx_f hack.  Instead, we dynamically allocate
  seperate mtx_debug structures on the fly in mtx_init, except for mutexes
  that are initiated very early in the boot process.   These mutexes
  are declared using a special MUTEX_DECLARE() macro, and use a new
  flag MTX_COLD when calling mtx_init.  This is still somewhat hackish,
  but it is less evil than the mtx_f filler struct, and the mtx struct is
  now the same size with and without mutex debugging code.
- Add some micro-micro-operation macros for doing the actual atomic
  operations on the mutex mtx_lock field to make it easier for other archs
  to override/optimize mutex ops if needed.  These new tiny ops also clean
  up the code in some places by replacing long atomic operation function
  calls that spanned 2-3 lines with a short 1-line macro call.
- Don't call mi_switch() from mtx_enter_hard() when we block while trying
  to obtain a sleep mutex.  Calling mi_switch() would bogusly release
  Giant before switching to the next process.  Instead, inline most of the
  code from mi_switch() in the mtx_enter_hard() function.  Note that when
  we finally kill Giant we can back this out and go back to calling
  mi_switch().
2000-10-20 07:26:37 +00:00
jhb
787712af1c - Expand the set of atomic operations to optionally include memory barriers
in most of the atomic operations.  Now for these operations, you can
  use the normal atomic operation, you can use the operation with a read
  barrier, or you can use the operation with a write barrier.  The function
  names follow the same semantics used in the ia64 instruction set.  An
  atomic operation with a read barrier has the extra suffix 'acq', due to
  it having "acquire" semantics.  An atomic operation with a write barrier
  has the extra suffix 'rel'.  These suffixes are inserted between the
  name of the operation to perform and the typename.  For example, the
  atomic_add_int() function now has 3 variants:
  - atomic_add_int() - this is the same as the previous function
  - atomic_add_acq_int() - this function combines the add operation with a
    read memory barrier
  - atomic_add_rel_int() - this function combines the add operation with a
    write memory barrier
- Add 'ptr' to the list of types that we can perform atomic operations
  on.  This allows one to do atomic operations on uintptr_t's.  This is
  useful in the mutex code, for example, because the actual mutex lock is
  a pointer.
- Add two new operations for doing loads and stores with memory barriers.
  The new load operations use a read barrier before the load, and the
  new store operations use a write barrier after the load.  For example,
  atomic_load_acq_int() will atomically load an integer as well as
  enforcing a read barrier.
2000-10-20 07:00:48 +00:00
jhb
16168b364a Axe the barrier_{read,write,rw}() helper functions as this method of
doing memory barriers doesn't really scale well for the ia64.  Also,
memory barriers are more a property of the CPU than bus space.

Requested by:	dfr
2000-10-20 06:45:48 +00:00
kato
22dd9a0920 Convert the type of bus_space_handle_t of pc98 from structure into
pointer to structure.

Reviewed by:	nyan
2000-10-20 02:42:06 +00:00
msmith
c9b6c92cc9 Call the BIOS to route the selected interrupt. Correctly calculate the
interrupt from the PCI routing table (ffs returns 1 for the rightmost
bit, not 0).
2000-10-19 08:06:50 +00:00
msmith
22c3105dfa Add PCI BIOS function codes for IRQ routing fetch and route. 2000-10-19 08:02:46 +00:00
jhb
be2e103365 Axe the idle_event eventhandler, and add a MD cpu_idle function used
for things such as halting CPU's, idling CPU's, etc.

Discussed with:	msmith
2000-10-19 07:47:16 +00:00
jhb
a4104b417e Add in a simple API for memory barriers to machine/bus.h:
- barrier_read() enforces a memory read barrier
- barrier_write() enforces a memory write barrier
- barrier_rw() enforces a memory read/write barrier
2000-10-18 10:30:12 +00:00
mdodd
24266e7d45 Use appropriate resource management accessors instead of directly
referencing structure members.

Use rman_get_size() instead of end - start + 1.
2000-10-18 00:09:26 +00:00
jhb
31c606939a - Catch up to moving headers, machine/ipl.h -> sys/ipl.h
- Fix some whitespace bogons.

Submitted by:	bde (2)
2000-10-17 23:10:23 +00:00
ps
c71ac689e0 Implement write combining for crashdumps. This is useful when
write caching is disabled on both SCSI and IDE disks where large
memory dumps could take up to an hour to complete.

Taking an i386 scsi based system with 512MB of ram and timing (in
seconds) how long it took to complete a dump, the following results
were obtained:

Before:				After:
	WCE           TIME		WCE           TIME
	------------------		------------------
	1	141.820972		1	 15.600111
	0	797.265072		0	 65.480465

Obtained from:	Yahoo!
Reviewed by:	peter
2000-10-17 10:05:49 +00:00
imp
0becd6877f Add types and prototypes.
Submitted by: msmith
2000-10-16 19:49:30 +00:00
imp
fa741b6476 Remove debug writes introduced in prior commit 2000-10-16 07:31:13 +00:00