Note that because we changed exception representation from using string
names as exception identifier into using integer IDs, we need to
initialize the embedding map in order to allocate the integer IDs. Also,
we can no longer print the exception names and messages from the kernel,
we will need the host to map exception IDs to names, and may need the
host to map string IDs to actual strings (messages can be static strings
in the firmware, or strings stored in the host only).
We now check for exception IDs for lit tests, which are fixed because we
preallocated all builtin exceptions.
Ported from:
M-Labs/artiq-zynq#162
This includes new API for exception handling, some refactoring to avoid
code duplication for exception structures, and modified protocols to
send nested exceptions and avoid string allocation.
Instead of removing basic blocks with no predecessor, we will now mark
and remove all blocks that are unreachable from the entry block. This
can handle loops that are dead code. This is needed as we will now
generate more complicated code for exception handling which the old dead
code eliminator failed to handle.
Exceptions are now allocated in the runtime when we raise the exception,
and destroyed when we exit the catch block. Nested exception and try
block is now supported, and should behave the same as in CPython.
Exceptions raised in except blocks will now unwind through finally
blocks, matching the behavior in CPython. Reraise will now preserve
backtrace.
Phi block LLVM IR generation is modified to handle landingpads, which
one ARTIQ IR will map to multiple LLVM IR.
Exception name is replaced by exception ID, which requires no
allocation. Other strings in the exception can now be 'host-only'
strings, which is represented by a CSlice with len = usize::MAX and
ptr = key, to avoid the need for allocation when raising exceptions
through RPC.
* Revert "Merge pull request #1544 from airwoodix/dataset-compression"
This reverts commit 311a818a49, reversing
changes made to 7ffe4dc2e3.
* fix accidental revert of f42bea06a8
* coredevice: Change Urukul default single-tone profile to 7
This allows using the internal profile control in RAM modulation mode (which always starts to play back at profile 0) without competing for the content of the profile 0 register used in single tone mode.
Signed-off-by: Peter Drmota <peter.drmota@physics.ox.ac.uk>
* ad9910/set_mu: comment on caveats when setting register
* ad9910: avoid unnecessary write/param
Credit: Solution proposed by @pmldrmota in https://github.com/m-labs/artiq/pull/1584#issuecomment-987774353
* revert 1064fdff (`set_mu()` comments)
158a7be7 had addressed this issue.
Co-authored-by: occheung <dc@m-labs.hk>
LLVM 6 seemed not to mind the mismatch, but more recent
versions produce miscompilations without this.
Needs llvmlite support (GitHub: numba/llvmlite#702).
* coredevice.ad9910: Add set_cfr2 function and extend arguments of set_cfr1 and set_sync
* SUServo: Wrap CPLD and DDS devices in a list
* SUServo: Refactor [nfc]
Co-authored-by: drmota <peter.drmota@physics.ox.ac.uk>
Co-authored-by: David Nadlinger <code@klickverbot.at>
Removed test cases that do not respect lifetime/scope constraint.
See discussion in artiq-zynq repo: M-Labs/artiq-zynq#119
Referred to the patch from @dnadlinger. 5faa30a837
In the origin implementation, the `nowrite` flag literally means not writing memory at all.
Due to the usage of flags on certain functions, it results in the same issues found in artiq-zynq after optimization passes. (M-Labs/artiq-zynq#119)
A fix wrote by @dnadlinger can resolve this issue. (c1e46cc7c8)
The reason of the borrow stuff is explained in M-Labs/artiq-zynq#76 (artiq-zyna repo).
As for `cache_get()`, compiler will perform stack allocation to pre-allocate the returned structure, and pass to cache_get alongside the `key`.
However, ksupport fails to recognize the passed memory, so it will always assume the passed memory as the key.
ld.lld has a habit of not putting the headers under any load sections.
However, the headers are needed by libunwind to handle exception raised by the kernel.
Creating PT_LOAD section with FILEHDR and PHDRS solves this issue. Other PHDRS are also specified as linkers (not limited to ld.lld) will not create additional unspecified headers even when necessary.
Previously we kept GNU Binutils because they are less of a pain to support
on Windoze - the source of so many problems - but with RISC-V we need to
update LLVM anyway.
previously ttl_counter_0 and ttl_0 could be on completely different physical ttl output channels
with this change, ttl_0_counter (note the changed key format) is always on the same channel as ttl_0
Signed-off-by: Leon Riesebos <leon.riesebos@duke.edu>
We need to check if our inference reached a fixed point. This is checked
using hash of the types in the AST, which is very slow. This patch
avoids computing the hash if we can make sure that the AST is definitely
changed, which is when we parse a new function.
For some simple programs with many functions, this can significantly
reduce the compile time by up to ~30%.
According to PEP484, type hint can be a string literal for forward
references. With PEP563, type hint would be preserved in annotations in
string form.
This breaks the internal dataset representation used by applets
and when saving to disk (``dataset_db.pyon``).
See ``test/test_dataset_db.py`` and ``test/test_datasets.py``
for examples.
Signed-off-by: Etienne Wodey <wodey@iqo.uni-hannover.de>
Previous to this commit `set_nco_phase()` set the phase of the DUC instead
of the NCO. Setting the phase of the NCO may be desirable to utilise the
auto-sync functionality of the double-buffered DAC-NCO settings.
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
1. Clarify which features require additional configuration via the `dac`
constructor argument.
2. Document when DAC settings apply immediatly/are staged.
3. Document how staged DAC settings may be applied
4. Calrify operation of `dac_sync`
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
When Phaser is powered on and `init()` is first called, enabling the
DAC-mixer while leaving the NCO disabled causes malformed output.
This commit implements a workaround by making sure the NCO is enabled,
before being set to the disired state.
This commit also avoids the following procedure, resulting in
malformed output:
1. Operate Phaser with the DAC Mixer and NCO enabled
2. Set the NCO to a non-zero frequency
3. Disable the NCO in the device_db
4. Re-initialise Phaser
After this procedure, with CMIX disabled, incorrect output is produced.
To clear the fault one must re-enable the NCO and write the NCO freqeuncy
to zero before disabling the NCO.
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
The CMIX bits are bits 12-15 in register 0x0d. This has been checked
against the datasheet and verified on hardware. Until now, the bit for
CMIX1 was written to CMIX0. The CMIX0 bit was written to a reserved bit.
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
in some use cases a larger tunable range than available via the DUC may
be needed. Some use cases may wish to combine the coarse mixer with the
DUC to extend the tunable range.
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
Currently, `init()` leaves a single oscillator at full scale. The phase
accumulator of this oscillator is held continuously cleared. Provided no
upconverting mechanism is active (DUC, CMIX, NCO), this produces a full-scale
DC voltage. The DC voltage is blocked by hardware capacitors. This behaviour
is not mentioned by the `init` documentation.
If one attempts to use any other oscillator without reducing the amplitude
of the oscillator enabled by `init`, there is by significant clipping.
In the case that the NCO or CMIX are configured via the device_db
(suggested in the docs), leaving the osillator at full scale results in
full RF output power after calling `init()`. This may plausibly damage loads
driven by phaser.
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
The suitable PFD clock depends on the use case and will likely need
to be configured by some users. All things being equal, a higher PFD
clock is desirable as is results in lower local oscillator phase-noise.
Phaser was designed around a maximum PFD clock of 62.5 MHz. In integer mode,
with no local oscillator frequency divisor set, a 62.5 MHz PFD clock results
in a 125 MHz local oscillator step size. Given the +-200 MHz range of the DUC
(more if using the DAC mixer), this step size will be acceptable to many.
This seems like the most appropreate default configuration as it should offer
the best phase-noise performance.
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
`sif_sync` must be triggered to apply NCO frequency changes. To achieve per
channel frequency tunability exeeding the range of the DUC, the NCO frequeny must
adjusted. User code will need to trigger `sif_sync` to achieve this.
`sif_sync` can only be triggered if the bit was cleared. To avoid this pitfall,
the clearing of `sif_sync` is automated.
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
