Commit Graph

901 Commits

Author SHA1 Message Date
David Xu
21fc316430 Change cpu_set_kse_upcall to more generic style, so we can reuse it
in other codes. Add cpu_set_user_tls, use it to tweak user register
and setup user TLS. I ever wanted to merge it into cpu_set_kse_upcall,
but since cpu_set_kse_upcall is also used by M:N threads which may
not need this feature, so I wrote a separated cpu_set_user_tls.
2005-04-23 02:32:32 +00:00
Paul Saab
8cb038b4b2 Don't enter the debugger if KDB_UNATTENDED is set or if
debug.debugger_on_panic=0.

MFC after:	2 weeks
2005-04-20 20:52:46 +00:00
Marcel Moolenaar
ff7125a623 Add empty header (except of the multiple-inclusion protection) to
get hwpmc(4) to compile on this platform.
2005-04-20 18:44:53 +00:00
Peter Grehan
a378bbabe6 Get order right when initializing task file bus resources. ATA drives are
now recognised when booting from the drive, as opposed to net-booting which
the previous botched commit was tested with.
2005-04-20 02:26:31 +00:00
Warner Losh
06db52b609 Break out the definition of bus_space_{tag,handle}_t and a few other types
into _bus.h to help with name space polution from including all of bus.h.
In a few days, I'll commit changes to the MI code to take advantage of thse
sepration (after I've made sure that these changes don't break anything in
the main tree, I've tested in my trees, but you never know...).

Suggested by: bde (in 2002 or 2003 I think)
Reviewed in principle by: jhb
2005-04-18 21:45:34 +00:00
Peter Grehan
5a276744c0 Catch up with ATA mkIII definitions for registers that have different
functions for read vs. write.
2005-04-18 04:23:23 +00:00
John Baldwin
aa9aa68d2f Use PCPU_LAZY_INC() for cnt.v_{intr,trap,syscalls} rather than atomic
operations in some places and simple non-per CPU math in others.
2005-04-12 23:18:54 +00:00
Suleiman Souhlal
db81b64fc4 Unbreak the powerpc build by fixing some ATA constants that were renamed.
Approved by:	grehan (mentor)
2005-04-12 15:59:54 +00:00
John Baldwin
4d9ae2662a Change an instance of md_savecrit to md_saved_msr that I missed. 2005-04-08 14:26:55 +00:00
John Baldwin
c6a37e8413 Divorce critical sections from spinlocks. Critical sections as denoted by
critical_enter() and critical_exit() are now solely a mechanism for
deferring kernel preemptions.  They no longer have any affect on
interrupts.  This means that standalone critical sections are now very
cheap as they are simply unlocked integer increments and decrements for the
common case.

Spin mutexes now use a separate KPI implemented in MD code: spinlock_enter()
and spinlock_exit().  This KPI is responsible for providing whatever MD
guarantees are needed to ensure that a thread holding a spin lock won't
be preempted by any other code that will try to lock the same lock.  For
now all archs continue to block interrupts in a "spinlock section" as they
did formerly in all critical sections.  Note that I've also taken this
opportunity to push a few things into MD code rather than MI.  For example,
critical_fork_exit() no longer exists.  Instead, MD code ensures that new
threads have the correct state when they are created.  Also, we no longer
try to fixup the idlethreads for APs in MI code.  Instead, each arch sets
the initial curthread and adjusts the state of the idle thread it borrows
in order to perform the initial context switch.

This change is largely a big NOP, but the cleaner separation it provides
will allow for more efficient alternative locking schemes in other parts
of the kernel (bare critical sections rather than per-CPU spin mutexes
for per-CPU data for example).

Reviewed by:	grehan, cognet, arch@, others
Tested on:	i386, alpha, sparc64, powerpc, arm, possibly more
2005-04-04 21:53:56 +00:00
Peter Grehan
98cbfce5db Introduce channel-level setmode newbus method.
Thanks to sos for the code re-org that allowed this.
2005-04-01 03:28:55 +00:00
Peter Grehan
05a016a3e1 Catch up with ATA-mkIII 2005-03-31 01:57:51 +00:00
Maxim Sobolev
6bcf003260 Add USB Communication Device Class Ethernet driver. Originally written for
FreeBSD based on aue(4) it was picked by OpenBSD, then from OpenBSD ported
to NetBSD and finally NetBSD version merged with original one goes into
FreeBSD.

Obtained from:  http://www.gank.org/freebsd/cdce/
                NetBSD
                OpenBSD
2005-03-22 14:52:40 +00:00
Peter Grehan
eb1c12f028 Optimize putc routine to write 2 ints instead of 8 chars to uncached
framebuffer memory. Speeds up system time of large ascii file cat
by 4x.

Inspired by:  Linux scrolling so damned fast.
2005-03-19 01:43:29 +00:00
Murray Stokely
991f5121f0 Add a comment to note that pseudo-device bpf is required for DHCP.
This is mentioned in the Handbook but it is not as obvious to new
users why bpf is needed compared to the other largely self-explanatory
items in GENERIC.

PR:		conf/40855
MFC after:	1 week
2005-03-18 15:24:00 +00:00
Peter Grehan
b1fab0ffc0 Split configure into 3 steps ala sparc64
Obtained from:  iedowse, sparc64
2005-03-18 03:29:39 +00:00
Peter Grehan
01b7183fdd Prepend underscore to bus_dmamap_{unload|sync} in line with
recent busdma changes.
2005-03-15 11:43:05 +00:00
Peter Grehan
bc54a0234a Include <sys/signalvar.h> for trapsignal prototype. 2005-03-15 11:41:55 +00:00
Peter Grehan
c10763d40c Long overdue sync-up with ATA code 2005-03-15 11:41:05 +00:00
Scott Long
5974e5c71c Refactor the bus_dma header files so that the interface is described in
sys/bus_dma.h instead of being copied in every single arch.  This slightly
reorders a flag that was specific to AXP and thus changes the ABI there.
The interface still relies on bus_space definitions found in <machine/bus.h>
so it cannot be included on its own yet, but that will be fixed at a later
date.  Add an MD <machine/bus_dma.h> for ever arch for consistency and to
allow for future MD augmentation of the API.  sparc64 makes heavy use of
this right now due to its different bus_dma implemenation.
2005-03-14 16:46:28 +00:00
Peter Grehan
b0c2130963 Replaced previous hw.physmem extraction with des's mods to
getenv_ulong() - much simpler.

Pointed out by:	des
2005-03-07 07:31:20 +00:00
Peter Grehan
e38509dc05 physmem is a much better indicator for 'real' memory on PPC than Maxmem
since there are often significant holes in the memory map due to the
kernel, loader and OFW data structures not being included: Maxmem is
the highest available, so can be misleading.
2005-03-07 01:52:24 +00:00
Peter Grehan
e2f6d6e28a Allow user to undersize memory with hw.physmem loader variable.
Obtained from:  i386/machdep.c:getmemsize()
2005-03-07 01:46:06 +00:00
Joerg Wunsch
a5f50ef9e4 netchild's mega-patch to isolate compiler dependencies into a central
place.

This moves the dependency on GCC's and other compiler's features into
the central sys/cdefs.h file, while the individual source files can
then refer to #ifdef __COMPILER_FEATURE_FOO where they by now used to
refer to #if __GNUC__ > 3.1415 && __BARC__ <= 42.

By now, GCC and ICC (the Intel compiler) have been actively tested on
IA32 platforms by netchild.  Extension to other compilers is supposed
to be possible, of course.

Submitted by:	netchild
Reviewed by:	various developers on arch@, some time ago
2005-03-02 21:33:29 +00:00
Peter Grehan
8c8cb52737 Catch up with "physical memory" sysctl change.
(MFi386: rev 1.608)
2005-03-01 07:59:24 +00:00
Peter Grehan
0dab19853f Catch the case where the idle loop is entered with interrupts disabled,
causing a hard hang.
2005-02-28 09:49:00 +00:00
Peter Grehan
4d4b91ac81 - switch pcpu to a struct declaration ala amd64. It may be more efficient to
cache-align this struct, but that's a topic for a far-in-the-future
  commit.
- eliminate commented-out reference to a non-existent pcpu field.
2005-02-28 08:47:51 +00:00
Peter Grehan
847b0d7551 Correctly set kernelname for kern.bootfile sysctl
Noticed by:	gad
Code stolen from: sparc64
2005-02-28 07:14:13 +00:00
Peter Grehan
4dba5df19d Add PVO_FAKE flag to pvo entries for PG_FICTITIOUS mappings, to
avoid trying to reverse-map a device physical address to the
vm_page array and walking into non-existent vm weeds.

found by:  Xorg server exiting
2005-02-25 02:42:15 +00:00
Peter Grehan
b4ac36978f Mods for Xorg server:
- store assigned PCI addresses at cninit time for later mmap range
   check
 - implement set_border to scrub X remnants when switching back to VTYs
 - implement mmap, only allowing addresses within the range of the
   console adapter.
2005-02-25 02:29:01 +00:00
Ruslan Ermilov
3971d2cf5e Use a common multi-inclusion protection, and add such a
protection to alpha/include/exec.h.
2005-02-19 21:16:48 +00:00
Nate Lawson
3888a87205 Finish the job of sorting all includes and fix the build by including
malloc.h before proc.h on sparc64.  Noticed by das@

Compiled on:	alpha, amd64, i386, pc98, sparc64
2005-02-06 01:55:08 +00:00
Nate Lawson
a287c0ffaf Sort includes a little so that bus.h comes before cpu.h (for device_t). 2005-02-04 06:58:09 +00:00
Nate Lawson
4c4381e288 Add an implementation of cpu_est_clockrate(9). This function estimates the
current clock frequency for the given CPU id in units of Hz.
2005-02-04 05:32:56 +00:00
Peter Grehan
79393893e8 - recognize 7447A/7448 CPUs (used in miniMacs)
- enable 745x branch caches. Already enabled by OpenFirmware
on Macs, but reduces NetBSD diffs and usable by embedded folk.

Obtained from:	NetBSD
2005-02-04 01:59:48 +00:00
Peter Grehan
6d2d8acaf4 - add wall_cmos_clock and adjkerntz variables, required by msdosfs
- support adjkerntz sysctl to silence NTP, though it's a null
  implementation at the moment.
2005-02-04 01:41:38 +00:00
Peter Grehan
911e488a03 Convert bus_space_barrier() into a null inline function rather than an
empty macro to avoid many compile warnings in the USB code.
2005-02-04 01:27:21 +00:00
Peter Grehan
4e895c543a - add definitions for MPC7447A/7448 (i.e. miniMac)
- expand MPC745X_P macro to include these

Obtained from:	NetBSD
2005-02-04 01:17:04 +00:00
Peter Grehan
9e8e140099 HID0 updates:
- updated relevant models for High BAT enable bit
 - fixed bug in BHTCLR/XAEN constants
 - added LRSTK and FOLD bits
2005-02-04 01:14:38 +00:00
Peter Grehan
70134d768c - change all u_int_XX to uint_XX
- cast param for atomic_subtract_long, since Netgraph uses it.
2005-02-01 11:17:24 +00:00
Peter Grehan
94aa7aecdf Fix (accidental?) lock order reversal in pmap_remove. Found when
a process that has mmap'd device mem exits.
2005-01-21 01:02:38 +00:00
Scott Long
9751303e1c Add bus_dmamap_load_mbuf_sg() to powerpc. 2005-01-15 19:55:25 +00:00
John Baldwin
f4ef9cec40 - Remove some OBE comments regarding cpu_exit(). cpu_exit() is no longer
the last action of kern_exit().  Instead, it is a MD callout to cleanup
  per-process state during exit.
- Add notes of concern to Alpha and ia64 about the possible need to drop
  fp state in cpu_thread_exit() rather than in cpu_exit() since it is
  per-thread state rather than per-process.
2005-01-14 20:13:04 +00:00
Peter Grehan
739211f027 - allow a device hint to disable probing a slot on a Uninorth PCI bus.
e.g. at the loader:

	set hint.pcib.1.skipslot=26

  This allows undocumented and problematic hardware on some systems
  to be ignored, for instance, the USB keyboard/mouse that shows up
  on a 12" albook that doesn't exist nor do anything other than eat up
  the syscons keyboard. Another one is the unused USB cell in the old
  366MHz iBook that locks up the machine when probed.

  In a way this is temporary, since there are better fixes for the
  above problems, but will be useful in the meantime by allowing
  a keyboard to be used to help debug said fixes :)

- while here remove some trailing white space
2005-01-11 08:09:50 +00:00
Warner Losh
60727d8b86 /* -> /*- for license, minor formatting changes 2005-01-07 02:29:27 +00:00
Peter Grehan
dac7b54d87 Return correct value in the lock routine. 2005-01-07 01:08:39 +00:00
Peter Grehan
22f2fe59b9 Correctly initialise the 2nd kernel segment, and don't
forget to actually install it in the segment register.
This may fix some of the weird panics seen when kernel VM
is heavily used.
2004-12-29 09:41:40 +00:00
Alan Cox
1f70d62298 Modify pmap_enter_quick() so that it expects the page queues to be locked
on entry and it assumes the responsibility for releasing the page queues
lock if it must sleep.

Remove a bogus comment from pmap_enter_quick().

Using the first change, modify vm_map_pmap_enter() so that the page queues
lock is acquired and released once, rather than each time that a page
is mapped.
2004-12-23 20:16:11 +00:00
Alan Cox
85f5b24573 In the common case, pmap_enter_quick() completes without sleeping.
In such cases, the busying of the page and the unlocking of the
containing object by vm_map_pmap_enter() and vm_fault_prefault() is
unnecessary overhead.  To eliminate this overhead, this change
modifies pmap_enter_quick() so that it expects the object to be locked
on entry and it assumes the responsibility for busying the page and
unlocking the object if it must sleep.  Note: alpha, amd64, i386 and
ia64 are the only implementations optimized by this change; arm,
powerpc, and sparc64 still conservatively busy the page and unlock the
object within every pmap_enter_quick() call.

Additionally, this change is the first case where we synchronize
access to the page's PG_BUSY flag and busy field using the containing
object's lock rather than the global page queues lock.  (Modifications
to the page's PG_BUSY flag and busy field have asserted both locks for
several weeks, enabling an incremental transition.)
2004-12-15 19:55:05 +00:00
Peter Grehan
0cff393761 Create a new definition, PSL_KERNSET, which is used for setting the
MSR in kernel mode. Redefine PSL_USERSET in terms of this by or'ing
in PSL_PR.
2004-11-30 09:04:41 +00:00