Commit Graph

918 Commits

Author SHA1 Message Date
Peter Grehan
ebc2aa7496 Temporary band-aid to fix hang when a process exec's Altivec instructions.
trap_subr.S:  declare a stub for the a-unavailable trap
              that does an absolute jump to the vector-assist trap.
              This is due to the fact that the vec-unavail trap
              doesn't start at a 256-byte boundary, so the trick of
              masking the bottom 8 bits of the link register to identify
              the interrupt doesn't work, so let the vec-assist
              case handle Altivec-disabled for the time being.

              Note that this will be fixed in the future with a much
              smaller vector code-stub (< 16 bytes) that will allow
              use of strange vector offsets that are also present in
              4xx processors, and also allow smaller differences in
              vector codepaths on the G5.

trap.c:       Treat altivec-unavailable/assist process traps as SIGILL.
              Not quite correct, since altivec-assist should really be a panic,
              but it is fine for the moment due to the above measure.

machdep.c     Install the stub code for the altivec-unavailable trap, and
              the standard trap code at the altivec-assist.

Reported by:	Andreas Tobler <toa at pop agri ch>
MFC after:	3 days
2005-07-30 11:14:31 +00:00
John Baldwin
122eceef61 Convert the atomic_ptr() operations over to operating on uintptr_t
variables rather than void * variables.  This makes it easier and simpler
to get asm constraints and volatile keywords correct.

MFC after:	3 days
Tested on:	i386, alpha, sparc64
Compiled on:	ia64, powerpc, amd64
Kernel toolchain busted on:	arm
2005-07-15 18:17:59 +00:00
Ken Smith
22e59cec3b Add recently invented COMPAT_FREEBSD5 option.
MFC after:	3 days
2005-07-14 15:39:06 +00:00
David Xu
740fd64d65 Validate if the value written into {FS,GS}.base is a canonical
address, writting non-canonical address can cause kernel a panic,
by restricting base values to 0..VM_MAXUSER_ADDRESS, ensuring
only canonical values get written to the registers.

Reviewed by: peter, Josepha Koshy < joseph.koshy at gmail dot com >
Approved by: re (scottl)
2005-07-10 23:31:11 +00:00
Peter Grehan
968b81b9cd The nsegs parameter to bus_dmamap_load_mbuf_sg is not required to
be set to 0 on input. This caused a panic in an an MP test version
of the GEM driver from Marius, and from inspection of other PCI
drivers, the same problem would happen there.
 Fix by explicitly setting to 0.

Approved by:   re
2005-07-09 06:53:52 +00:00
David E. O'Brien
c3e0dfa1f8 Add .cvsignore files just like in sys/<arch>/compiled, this keeps CVS from
questing kernel config files not in CVS.

Approved by:	re(kensmith)
2005-06-20 16:52:59 +00:00
Joseph Koshy
89ec08eebf Unbreak the PowerPC GENERIC build.
Reviewed by:	delphij
2005-06-11 10:59:02 +00:00
Alan Cox
1c245ae7d1 Introduce a procedure, pmap_page_init(), that initializes the
vm_page's machine-dependent fields.  Use this function in
vm_pageq_add_new_page() so that the vm_page's machine-dependent and
machine-independent fields are initialized at the same time.

Remove code from pmap_init() for initializing the vm_page's
machine-dependent fields.

Remove stale comments from pmap_init().

Eliminate the Boolean variable pmap_initialized from the alpha, amd64,
i386, and ia64 pmap implementations.  Its use is no longer required
because of the above changes and earlier changes that result in physical
memory that is being mapped at initialization time being mapped without
pv entries.

Tested by: cognet, kensmith, marcel
2005-06-10 03:33:36 +00:00
Joseph Koshy
f263522a45 MFP4:
- Implement sampling modes and logging support in hwpmc(4).

- Separate MI and MD parts of hwpmc(4) and allow sharing of
  PMC implementations across different architectures.
  Add support for P4 (EMT64) style PMCs to the amd64 code.

- New pmcstat(8) options: -E (exit time counts) -W (counts
  every context switch), -R (print log file).

- pmc(3) API changes, improve our ability to keep ABI compatibility
  in the future.  Add more 'alias' names for commonly used events.

- bug fixes & documentation.
2005-06-09 19:45:09 +00:00
Marcel Moolenaar
470cd51ee6 Create nexus in configure_first() instead of in configure(). This
makes sure that sysinit tasks that run after configure_first(),
but before configure() have a nexus to hang devices off.
2005-05-29 23:44:22 +00:00
Marcel Moolenaar
ba64ae0c94 Call cninit_finish() from configure_final(). 2005-05-29 22:53:48 +00:00
Peter Grehan
3b7b274ae1 The end values passed to rman_manage_region() for PCI i/o and mem
spaces were 1 too large. This resulted in the rman list not being
sorted correctly, and USB ports not being discovered on older
TiBooks.

Detective work by:   Andreas Tobler <toa at pop dot agri dot ch>
2005-05-29 08:51:21 +00:00
Yoshihiro Takahashi
d4fcf3cba5 Remove bus_{mem,p}io.h and related code for a micro-optimization on i386
and amd64.  The optimization is a trivial on recent machines.

Reviewed by:	-arch (imp, marcel, dfr)
2005-05-29 04:42:30 +00:00
Peter Grehan
bd8fa19da3 Quick hack-o-rama to allow the Xorg Radeon driver to start up. It
tries to mmap memory outside of the available BARs, so allow the
range checks to be relaxed with a sysctl.
2005-05-21 00:22:57 +00:00
Peter Grehan
edaccfc8bb Remove incorrect configuration setting that limited the Kauai ATA controller
to be master-only. The slave ATAPI drive on the Mac-Mini is now recognised.
2005-05-14 02:11:45 +00:00
Peter Grehan
c2399f7a3f - move to SCHED_4BSD per jeffr's comments on SCHED_ULE's state
- enable MSDOSFS
- ehci is stable on the powerbook
- modules have been working for a long time.
2005-05-03 11:56:05 +00:00
Peter Grehan
6ac8f17ee4 Catch up with latest ATA newbus commits. 2005-05-01 13:11:29 +00:00
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