andreast [Sat, 2 Jan 2016 22:04:37 +0000 (22:04 +0000)]
Fix booting of 32-bit kernels on 64-bit G5 hardware.
For rs6000, most memory insns and addi/addis do not allow GPR0 for RA
(they use literal zero there instead). So use a 'b' constraint to make
sure to have a base register other than GPR0.
GCC-4.7 and up handles this with allocating r9 instead of r0.
ian [Sat, 2 Jan 2016 22:00:52 +0000 (22:00 +0000)]
Use 64-bit math when processing the lists of physical and excluded memory
to generate the phys_avail and dump_avail arrays.
This is a partial fix for the kernel side of the problem mentioned in the
PR. This part handles the cases where comparing start and end addresses of
a block would fail because 32-bit wrap caused the end address to come out
zero if the end of the region is the end of the address space (0xffffffff
with 32-bit vm_paddr_t, but now the code should also work right if we ever
support LPAE with 36-bit addresses).
More work is necessary to make systems with ram at the end of the physical
address space usable, but at least initially it's going to be more like a
workaround than a fix, so this non-hacky part is being committed first.
kib [Sat, 2 Jan 2016 20:29:28 +0000 (20:29 +0000)]
Hide transient EBADF errors caused by the parallel revoke(2) or forced
unmount of devfs mounts, by restarting the failed syscall.
When restarted, failing syscalls eventually either stop finding the
node and returning ENOENT, or the vnode op vectors finally transition
to the deadfs vop. The later return EIO or other error, more
appropriate for the operation.
nwhitehorn [Sat, 2 Jan 2016 19:34:37 +0000 (19:34 +0000)]
Bump the maximum number of interrupt controllers to allow for the
proliferation of them on large IBM systems and add some error checking if
we exceed that number.
nwhitehorn [Sat, 2 Jan 2016 19:28:35 +0000 (19:28 +0000)]
Make using the #address-cells property on the interrupt parent in device
tree parsing opt-out rather than opt-in. All FDT-based systems as well as
PowerPC systems with real Open Firmware use the CHRP-derived binding that
includes it, which makes SPARC the odd man out here. Making it opt-out
avoids astonishment on new platform bring up.
ian [Sat, 2 Jan 2016 18:16:24 +0000 (18:16 +0000)]
Use 64-bit math when finding a block of ram to hold the kernel. This fixes
a problem on 32-bit systems which have ram occupying the end of the physical
address space -- for example, a block of ram at 0x80000000 with a size of
0x80000000 was overflowing 32 bit math and ending up with a calculated size
of zero.
This is a fix for one of the two problems mentioned in the PR. Something
similar will need to be done on the kernel side before the PR is closed.
adrian [Sat, 2 Jan 2016 17:14:22 +0000 (17:14 +0000)]
[ath] add explicit bus barriers.
The ath hal and driver code all assume the world is an x86 or the
bus layer does an explicit bus flush after each operation (eg netbsd.)
However, we don't do that.
So, to be "correct" on platforms like sparc64, mips and ppc (and maybe
ARM, I am not sure), just do explicit barriers after each operation.
Now, this does slow things down a tad on embedded platforms but I'd
rather things be "correct" versus "fast." At some later point if someone
wishes it to be fast then we should add the barrier calls to the HAL and
driver.
des [Sat, 2 Jan 2016 16:40:37 +0000 (16:40 +0000)]
Replace the cosine table with a sine table, which (due to the vagaries of
rounding) has better spread. Implement fp16_sin() to go along with
fp16_cos(). In the rendering loop, switch from addition to subtraction
so the center of the pattern will be a trough rather than a peak. This
is completely arbitrary, of course, but looks better to me.
ian [Sat, 2 Jan 2016 02:53:48 +0000 (02:53 +0000)]
Make the 'env' directive described in config(5) work on all architectures,
providing compiled-in static environment data that is used instead of any
data passed in from a boot loader.
Previously 'env' worked only on i386 and arm xscale systems, because it
required the MD startup code to examine the global envmode variable and
decide whether to use static_env or an environment obtained from the boot
loader, and set the global kern_envp accordingly. Most startup code wasn't
doing so. Making things even more complex, some mips startup code uses an
alternate scheme that involves calling init_static_kenv() to pass an empty
buffer and its size, then uses a series of kern_setenv() calls to populate
that buffer.
Now all MD startup code calls init_static_kenv(), and that routine provides
a single point where envmode is checked and the decision is made whether to
use the compiled-in static_kenv or the values provided by the MD code.
The routine also continues to serve its original purpose for mips; if a
non-zero buffer size is passed the routine installs the empty buffer ready
to accept kern_setenv() values. Now if the size is zero, the provided buffer
full of existing env data is installed. A NULL pointer can be passed if the
boot loader provides no env data; this allows the static env to be installed
if envmode is set to do so.
Most of the work here is a near-mechanical change to call the init function
instead of directly setting kern_envp. A notable exception is in xen/pv.c;
that code was originally installing a buffer full of preformatted env data
along with its non-zero size (like mips code does), which would have allowed
kern_setenv() calls to wipe out the preformatted data. Now it passes a zero
for the size so that the buffer of data it installs is treated as
non-writeable.
jpaetzel [Fri, 1 Jan 2016 17:06:16 +0000 (17:06 +0000)]
Unset the gss kernel state when gssd exits
When gssd exits it leaves the kernel state set by
gssd_syscall(). nfsd sees this and waits endlessly
in an unkillable state for gssd to come back. If you
had acidentally started gssd then stopped it, then
started nfsd you'd be in a bad way until you either
restarted gssd or rebooted the system. This change
fixes that by setting the kernel state to "" when
gssd exits.
Reviewed by: rmacklem
MFC after: 1 week
Sponsored by: iXsystems
jhibbits [Fri, 1 Jan 2016 15:36:56 +0000 (15:36 +0000)]
Use uint32_t for LBC block size.
LBC block size can only be up to 4GB. The existing code already clamps it, but
mixes unsigned long and uint32_t. This works on 32-bit targets, but not 64-bit,
so isn't completely correct. This fixes the type confusion.
emaste [Fri, 1 Jan 2016 15:30:11 +0000 (15:30 +0000)]
Reduce libstand Makefile duplication
libstand is built in three places (lib/libstand, sys/boot/libstand32,
and sys/boot/userboot/libstand). Reduce Makefile duplication by
.including libstand/Makefile from sys/boot/libstand32/Makefile.
sys/boot/userboot/libstand/Makefile will be addressed later, as it
contains additional differences yet to be handled.
This change also switches libstand32 to use the new uuid_from_string
and uuid_to_string, which was not included in r292473.
Reviewed by: jhb
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D4747
des [Fri, 1 Jan 2016 04:04:40 +0000 (04:04 +0000)]
17 years and change after I wrote warp_saver, here's a simple plasma effect
(currently only three circular patterns) which requires quite a bit of
fixed-point arithmetic, including sqrt() and cos(). Happy New Year!
ngie [Fri, 1 Jan 2016 02:22:45 +0000 (02:22 +0000)]
- Use geom <class> load instead of g<class> load; g<class> doesn't exist
for all geom classes, e.g. geom_uzip(4)
- These tests require root. Skip all of the tests if they're run as non-root
dim [Thu, 31 Dec 2015 22:52:11 +0000 (22:52 +0000)]
Merge r293013 from clang380-import branch:
Fix a clang 3.8.0 warning in pflogd.c:
contrib/pf/pflogd/pflogd.c:769:8: error: logical not is only applied to the left hand side of this comparison [-Werror,-Wlogical-not-parentheses]
if (!if_exists(interface) == -1) {
^ ~~
The if_exists() function does not return -1, and even if it did, it
would not be the correct way to check. Just ditch the == -1 instead.
Obtained from: OpenBSD's pflogd.c 1.49
MFC after: 3 days
dim [Thu, 31 Dec 2015 22:48:46 +0000 (22:48 +0000)]
Merge r293006 from clang380-import branch:
For determining the compiler version, quote the string to be echo'd,
otherwise the command might fail. This is because clang -v now results
in the following:
FreeBSD clang version 3.8.0 (trunk 256633) (based on LLVM 3.8.0svn)
The second "3.8.8svn)" string tripped up the shell command.
allanjude [Thu, 31 Dec 2015 20:00:53 +0000 (20:00 +0000)]
Introduce the ZFS Boot Environments menu to the loader menu
If the system was booted with ZFS, a new menu item (#7) appears
It contains an autogenerated list of ZFS Boot Environments
This allows the user to switch to an alternate root file system
Use Cases:
- Revert a failed upgrade
- Concurrently run different versions of FreeBSD with common home directory
- Easier integration with the sysadmin/beadm utility
Requested by: many
Reviewed by: dteske
MFC after: 10 days
Relnotes: yes
Sponsored by: ScaleEngine Inc.
Differential Revision: https://reviews.freebsd.org/D3167
dteske [Thu, 31 Dec 2015 19:37:14 +0000 (19:37 +0000)]
Remove supposition comment that code would better live elsewhere.
Thinking this through, and looking at process_assignment, I believe
moving the code would be wrong considering that set_conf_files is
called in one condition while set_nextboot_conf is guarded by a
different condition of having nextboot_enable="YES". So these must
stay separated and not combined.
dteske [Thu, 31 Dec 2015 19:00:45 +0000 (19:00 +0000)]
Remove debugging messages. NB: SVN r187143 reads:
comment out some debugging messages that slipped in by mistake
(removing them 7 years after they have been commented out)
ian [Thu, 31 Dec 2015 18:29:24 +0000 (18:29 +0000)]
When building libstand for arm, don't emit instructions that require
relocation fixups unsupported by the self_reloc() code, and don't optimize
memcpy/memset using floating point registers, because in a standalone
environment nothing has initialized the fpu hardware.
jilles [Thu, 31 Dec 2015 17:51:15 +0000 (17:51 +0000)]
sh: Perform IFS splitting during the first expansion phases.
This simplifies the code and should be faster in some cases.
Side effect: the order of operations is different so that the value of IFS
used when IFS is modified during expansion (${IFS:=...}, ${IFS=...} or
$((...IFS=...))) may be different. Note that this order is highly unportable
between shells.
hselasky [Thu, 31 Dec 2015 12:30:19 +0000 (12:30 +0000)]
Minor LinuxKPI code cleanup:
- Declare some static functions in linux_compat.c instead if inside
various header files.
- Prefix FreeBSD local functions in the LinuxKPI with "linux_" to
avoid symbol name conflicts in the future and to make debugging
easier.
- Make the "struct kobj_ktype" declaractions constant to shave off a
few bytes from the data segment.
melifaro [Thu, 31 Dec 2015 05:03:27 +0000 (05:03 +0000)]
Implement interface link header precomputation API.
Add if_requestencap() interface method which is capable of calculating
various link headers for given interface. Right now there is support
for INET/INET6/ARP llheader calculation (IFENCAP_LL type request).
Other types are planned to support more complex calculation
(L2 multipath lagg nexthops, tunnel encap nexthops, etc..).
Reshape 'struct route' to be able to pass additional data (with is length)
to prepend to mbuf.
These two changes permits routing code to pass pre-calculated nexthop data
(like L2 header for route w/gateway) down to the stack eliminating the
need for other lookups. It also brings us closer to more complex scenarios
like transparently handling MPLS nexthops and tunnel interfaces.
Last, but not least, it removes layering violation introduced by flowtable
code (ro_lle) and simplifies handling of existing if_output consumers.
ARP/ND changes:
Make arp/ndp stack pre-calculate link header upon installing/updating lle
record. Interface link address change are handled by re-calculating
headers for all lles based on if_lladdr event. After these changes,
arpresolve()/nd6_resolve() returns full pre-calculated header for
supported interfaces thus simplifying if_output().
Move these lookups to separate ether_resolve_addr() function which ether
returs error or fully-prepared link header. Add <arp|nd6_>resolve_addr()
compat versions to return link addresses instead of pre-calculated data.
BPF changes:
Raw bpf writes occupied _two_ cases: AF_UNSPEC and pseudo_AF_HDRCMPLT.
Despite the naming, both of there have ther header "complete". The only
difference is that interface source mac has to be filled by OS for
AF_UNSPEC (controlled via BIOCGHDRCMPLT). This logic has to stay inside
BPF and not pollute if_output() routines. Convert BPF to pass prepend data
via new 'struct route' mechanism. Note that it does not change
non-optimized if_output(): ro_prepend handling is purely optional.
Side note: hackish pseudo_AF_HDRCMPLT is supported for ethernet and FDDI.
It is not needed for ethernet anymore. The only remaining FDDI user is
dev/pdq mostly untouched since 2007. FDDI support was eliminated from
OpenBSD in 2013 (sys/net/if_fddisubr.c rev 1.65).
Flowtable changes:
Flowtable violates layering by saving (and not correctly managing)
rtes/lles. Instead of passing lle pointer, pass pointer to pre-calculated
header data from that lle.
ian [Wed, 30 Dec 2015 23:04:08 +0000 (23:04 +0000)]
Add the MOVT/MOVW types to the list of relocs which do not generate .plt
entries. This fixes the segfaults in arm userland code compiled with
-march= or -mcpu= values that allow the compiler to generate movw/movt
sequences to load 32-bit constants.
kib [Wed, 30 Dec 2015 19:49:22 +0000 (19:49 +0000)]
Force nullfs vnode reclaim after unlinking, to potentially unlink
lower vnode. Otherwise, reference to the lower vnode from the upper
one prevents final unlink.
PR: 178238
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
andrew [Wed, 30 Dec 2015 17:36:34 +0000 (17:36 +0000)]
Decode and print the ID_AA64* registers on boot. These registers hold
information on what the core supports. In most cases these will be
identical across most CPUs in the SoC, however there may be the case where,
with a big.LITTLE setup they may differ. In this case we print the
decoded data on all CPUs.
bz [Wed, 30 Dec 2015 17:10:03 +0000 (17:10 +0000)]
This code is not in modules that need KPI stability so no need to use
the wrapper functions as used in r252511. We can directly use the
locking macros.
dim [Wed, 30 Dec 2015 16:14:30 +0000 (16:14 +0000)]
Drop the clang patch which adds recognition of 'CC' suffixes as aliases
for --driver-mode=g++, since this was never upstreamed. For backwards
compatibility, add a wrapper shell script.
marius [Wed, 30 Dec 2015 13:49:20 +0000 (13:49 +0000)]
- (Ab)use udivx for dividing the u_int pc_cpuid when implementing
CPU_ISSET(), CPU_SET etc. in sparc64 asm. This approach has the
benefit of not clobbering %y, allowing to revert r222827 and
partially r222828.
- In r222828, CATR() already was changed to use the equivalent of
PCPU_GET(cpuid) instead of the MD module ID for KTR_CPU, so
belatedly also catch up with the C side of ktr(9). Originally,
in r203838 CATR() was moved away from directly reading the
module ID or equivalent as that became impractical with other
CPU types than USI/II supported. With r222828 in place, per-CPU
data generally is set up soon enough, though, that employing
PCPU things in ktr(9) also for use during early stages works.
- Unfortunately, an exception to the latter is the ktr(9) use
in pmap_bootstrap(), which actually is run so early that even
checking for bootverbose being set via the loader doesn't work.
Consequently, replace the ktr(9) use in pmap_bootstrap() with
OF_printf(9) and put it under #ifdef DIAGNOSTIC instead.
jhibbits [Wed, 30 Dec 2015 03:43:25 +0000 (03:43 +0000)]
Add platform support for QorIQ SoCs.
This includes the following changes:
* SMP kickoff for QorIQ (tested on P5020)
* Errata fixes for some silicon revisions
* Enables L2 (and L3 if available) caches
Obtained from: Semihalf
Sponsored by: Alex Perez/Inertial Computing
jhibbits [Wed, 30 Dec 2015 02:23:14 +0000 (02:23 +0000)]
Rewrite tid_flush() in C.
There's no need for it to be in asm. Also, by writing in C, and marking it
static in pmap.c, it saves a branch to the function itself, as it's only used in
one location. The generated asm is virtually identical to the handwritten code.
dteske [Wed, 30 Dec 2015 02:15:12 +0000 (02:15 +0000)]
Fix stack leak introduced by SVN r97201 (nextboot_conf support).
Fix erroneous error path in error messages when processing boot_conf.
Fixup stack comments for functions introduced by SVN r97201.
Remove a questioning stack comment introduced by SVN r186789.
NB: Comment removed because strdup usage here is correct/not a leak.
jhb [Tue, 29 Dec 2015 23:25:26 +0000 (23:25 +0000)]
Add ptrace(2) reporting for LWP events.
Add two new LWPINFO flags: PL_FLAG_BORN and PL_FLAG_EXITED for reporting
thread creation and destruction. Newly created threads will stop to report
PL_FLAG_BORN before returning to userland and exiting threads will stop to
report PL_FLAG_EXIT before exiting completely. Both of these events are
only enabled and reported if PT_LWP_EVENTS is enabled on a process.
ian [Tue, 29 Dec 2015 22:18:35 +0000 (22:18 +0000)]
Bring some of the recent locore-v4.S improvements into locore-V6...
- Map all 4GB as VA=PA so that args passed in from a bootloader can
be accessed regardless of where they are.
- Figure out the kernel load address by directly masking the PC rather
then by doing pc-relative math on the _start symbol.
- For EARLY_PRINTF support, map device memory as uncacheable (no-op for
ARM_NEW_PMAP because all TEX types resolve to uncacheable).
kib [Tue, 29 Dec 2015 22:14:21 +0000 (22:14 +0000)]
Add standard extended feature bit 6 from the Intel SDM rev. 57, which
indicates that data-pointer in the saved x87 FPU state is only updated
on FPU exceptions.
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
ian [Tue, 29 Dec 2015 21:29:05 +0000 (21:29 +0000)]
Fix the error checking for the ubenv command. This moves the check for an
empty ldvar (which amounts to the varname string starting with '=') into
the if block that manipulates ldvar, which avoids later referencing ldvar
when it was never initialized.
marius [Tue, 29 Dec 2015 17:07:28 +0000 (17:07 +0000)]
- Add entries for the more prominent members of the Digi International
Neo series, which are based on Exar PCI chips.
- Mark some unused parameters as such.
- Fix style