separate PPS_out with time_valid.
    Disable transmitting packets when link is not up.

    when the node connecting with the master port restarts, it won't be
  synced with CUTE-DP. The bug is introduced by the wrong ClockClass of
  the master port.

This commit adds a tool to send out, through ethernet, a complete log of
DAC values for the main oscillator. It allows to see if there are
oscillations (and there currently are) and what happens when tracking
is lost and recovered.

To activate the feature

  * add CONFIG_DAC_LOG (depends on CONFIG_DEVELOPER)

  * activate on the console: "daclog <ipaddr> <macaddr>"

  * collect data on your target host

     netcat -u -l -p 1050  | od -An -t u2 -v -w2 --endian=big > daclog.txt

  * stop it when done, on the console: "daclog off"
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

When any of exported structures is changed please update
WRPC_SHMEM_VERSION or WRS_PPSI_SHMEM_VERSION (for PPSI)
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

This fixes OHWR issue 1320: softpll doesn't set Locked flag for the main channel

These stats will be used by SNMP.
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Use git config --get-all user.name as an build author, if not available use
user@hostname.
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

For other parties using the stats interface with the softpll we need
the minimal file that can be easily used in other projects (like SNMP on
the wr-switch).

Move to the softpll_export.h:
--struct spll_stats
--defines of seq_state from softpll_ng.c (SEQ_* and AUX_*)
--defines of align_state from spll_external.c (ALIGN_*)
--defines of mode from softpll_ng.h (SPLL_MODE_*)
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

This is needed to build ppsi on the host with arch-wrpc, that
I'm using to developer udp on ppsi::wrpc-sw
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This removes TRACE_DEV(), turning it into pll_verbose() and wrc_verbose().

The functions are enabled and disabled by kconfig, with defaults matching
the previous behaviour.

So nothing changes, but the binary is smaller because the previous
wrc_debug_printf() was silent because of a run-time conditional
(though hardwired false at build time). The condional is now at build
time.  We save around 2k, between strings and calling code, in
all wrc builds (nothing is saved in wrs, which is verbose by default,
nor in devel_build_test_defconfig where all verbose options are on)).
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

devel_build_test_defconfig: enable all verbose options
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The makefile included trace.h for everyone, which in turns included
wrc.h.  It's better to include wrc.h straight on (we can't rely on all
files including it, for example pp_printf does not).

Meanwhile, some redundant includes are removed, and some are added
(I prefer wrc.h to be explicitly listed in the files that use it,
even if the command line set in Makefile already prepends it).
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

If the Kconfig option is not set, there's no effect on code size.
If set, .bss increases by 256 bytes (the buffer) and .text by
another 200 bytes.

This adds timestamping support, so we know the duration of the
interrupt (because we found it's an important thing when problems
occur).
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

There was a hole at the beginning of the generated binary, so this
commit includes some data to identify the endianness of the dump file
and host pointers to the important structures that we dump.
For wr-switch, the ppi pointer is just set to zero.

The change is backward compatible, because we just fill 32 bytes of
data where we had a bunch of zeroes.

The next commit will use such information when available in the dump file.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

SQUASH
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This commit has no effect on the final binary file.

The state structures for softpll_ng must be accessed by tools/wrpc-dump,
so we need them in an header (not in sofpll_mg.c itself).

Unfortunately, struct softpll_state includes a lot of other structures,
so all dependent headers must be included by softpll_ng.h.  Thus,
all C files should now include softpll_ng.h alone, not the other ones.

I also had to remove inclusion of unneeded <stdint.h> and <stdlib.h>
from spll_common.h, because stdlib pulled the prototype for abs()
which is #defined in ppsi (my bad!), and we would have a build error.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

so that is works both on WRS and WRPC

Needed mainly for SPEC, where Spartan6 PLL does not report unlock when clk_in
(10MHz) is unplugged. In addition to that, datasheet says that PLL should be
reset after losing clk_in.

This commit fixes all copyright notes, using "git blame" as a
reference.  For simple files I just added a 2-lines boilerplate about
being WR and GPL.

Some parts I left untouched:

  trivial-init and related files (unclear to me what this is,
  and pf-microcode.h is magic binary pfilter values).

  tools/lm32-etheruart: I don't know what this is and who the author is

  libsdbfs: this comes from another repo and I'd better not change it

  sfp_lib.h and hal_shmem.h: I lost track about the origin of this,
  among the several packages.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Reason: h_y was close to the DAC range, on some boards we were unable to lock
HPLL.
In addition to HPLL modifications, also the phase shifting had to be changed.
When offset clock has lower frequency than the ref clock, shifting ref
clock produces sampled clock which is shifted in another direction.

This time I added -Wmissing-prototypes and fixed accordingly. Again, this
used to be part of -Wall and I'm disgusted by it not being so any more.

What does "all" mean, then?
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

I added -Wstrict-prototypes, that used to be included in -Wall settings
but is not.  Actually, I think it should be an error to not specify an
argument list by now.  If any, -traditional is there for old timers.

Fortunately no bug was exposed by the missing prototypes.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Otherwise we have a race condition with wr_date setting initial time on the
switch.

--increase spll_stats structure version to 2
--add to spll_stats structure:
  - commit_id
  - build_date
  - build_time
  - start_cnt (to be used later for start counter)
--move declaration of spll_stats structure from wrs_main.c to revision.c
--pass git version and author at compile time to revision.c
--create revision.h with build_* externs
--update version reporting at cpu start
--update version command
--include section .stats in section .data for node
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

If the host wants a consistent view (*if* it wants it), it
can wait for the sequence number to be even, read the lot and
then check it did not change.

If it is odd, it means the structure is being modified. If it changed
after reading it means a new modification started.

Not my invention: it's old stuff, though smart. See sequential locks
in the kernel for example.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Conflicts:

	arch/lm32/ram-wrs.ld

"char valid" in a structure of integer makes alignment problems
(because we are accessing it from a different CPU we'd better not have
holes).

Also, there is no inherent consistency needed here, and this valid bit
is racy anyways. We could solve it with a sequence number, if any, but
let's avoid it altogether by now.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>