Previously the simaple info data was valid for exectly 1 clock cycle,
in which the user had to pull the 'get_data' signal if he wanted the
associated payload.
This change allows the user to control how long the sample info data is
shown.
The inline-QoS of PDP Packets is parsed, and Participants/Endpoints can
be unmatched by Unregister/Dispose Status Info Updates.
Test 1,2,3 was extended to test this functionality.
NOTE: PID_KEY_HASH is a requirement (at least for unmatching Endpoints),
as serialized key payloads are unsupported.
The GAP parsing logic was backported from RTPS Reader, so that the RTPS
Builtin Endpoint can parse all kind of GAP without making assumptions.
The Test 4 of the RTPS Builtin Endpoint was extended to test HAERTBEAT and GAP Handling of the RTPS
Builting endpoint, and Test 2 of the RTPS Reader was extended with an
additional Test (GAP with next expected SN not marked in bitmap)
Until now the ACKNACK Response of the RTPS Builtin Endpoint had an empty
Bitmap, effectively ACKing SNs, but never NACKing any (i.e. not
requesting any).
Similar to the RTPS Endpoints we request the next 32 SNs on every
ACKNACK Response.
The ParticipantMessageData SN Handling was also implemented.
Backport Memory Controller and Memory FSM from RTPS/DDS Endpoints to
RTPS Builtin Endpoint.
The Memory is now using a single linked list and the FSM uses Frame Field
Flags.
The main FSM uses check_time to initiate stale checks, and the stale
checks are done in the main FSM.
Testbench was modified to accomodate the changes (Previous L0 Test4 was
removed and integrated in L0 Test 1).
The REMOVE_WRITER DDS Operation of DDS Reader now generates Samples if
the Instance State changes.
Updated testbench.
Added checks for DATA_AVAILABLE communication status.
Test Sample Rejected Status Handling.
Test GET_SAMPLE_REJECTED_STATUS DDS Operation.
Extend Sample Rejected Status Kind by REJECTED_BY_PAYLOAD_MEMORY_LIMIT
Test the DDS READ, TAKE, READ_NEXT_SAMPLE, TAKE_NEXT_SAMPLE,
READ_INSTANCE, TAKE_INSTANCE, READ_NEXT_INSTANCE, TAKE_NEXT_INSTANCE
Operations.
Backport fixes to previous testbenches.
Change handling of DISPOSE Samples of unknown Instances.
Test RTPS GET_MIN_SN, GET_MAX_SN, GET_CACHE_CHANGE, REMOVE_CACHE_CHANGE,
ACK_CACHE_CHANGE, and NACK_CACHE_CHANGE Operations.
Test DDS Register, Unregister, Write, Dispose, and Lookup Instance
Operations.
The instantiation of the KEY related entities is moved outside the DDS
Endpoints (Currently only changed in DDS Writer). Define new KEY_HOLDER
entity that is responsible for all Key related type-specific code.
Fix syntax of DDS Writer, and misc code refactoring.
Tests are added for different Generics Settings (Durability,
Reliability, Keyed Topic).
Test 2 of RTPS Reader (User Tarffic Handling) is extended with a few
extra test cases.
Each Entity that contains a memory will have an independent size
generic. The testbench was modified to accomodate different RAM memory
sizes. This in effect makes all Memory related stuff pre-entity
dependant. The rtps_test_package needs updated Frame Sizes for the Tests
to work properly.
The reader falgs (Expects In-line QoS, Expects Historical Data, Is Best
Effort) of the remote reader is transfered in the Metatraffic Endpoint
Match Frame.
The Level 1 rtps_builtin_endpoint test was also fixed.
Amongst other fixes the interface between RTPS-HC/DDS was changed.
The Liveliness Update metatraffic operation was also made QOS dependant
and put behind synthesis guards.
Instance Removal trigger was modified. While before at least 1 instance
slot needed to be empty at all times (similar to the sample slot), thsi
was changed to only remove instances on demand. This is controlled via
a signal that holds the current number of stale (removalble) instances.
Since the payload can only be padded until the next 4-byte aligned
address, we needed a way to read out only the actual payload in case the
payload was not aligned in the last payload slot (did not go until the
end of the payload slot). This is now handled by an additional bit flag
in the Sample Status Info which denotes if the payload is aligned. In
the case the payload is unaligned, the last address of the last payload
slot contains the offset of the actual payload end.
This commit also adds MEMORY RESET states for the Sample, payload, and
instance Memory.
Ignore unknown Metatraffic Operations.
Drop payload if not necessary (i.e. do not push payload if payload
contains serialized Key, but Key Hash is already provided).
Added Memory Reset State.
Misc fixes
The Memory Control Process is made more generic (with less specialised
code), to allow the main process more control. I.e. all Memory Frame
Fields are individually addressable (during GET and UPDATE).
The RAM instance is hidden behind a Memory Controller with Flow Control
Signals, allowing easy future integration to different Memory Interfaces
(e.g. AXI Lite).
If the payload is not directly aligned with the Payload slots, it has
to be ensured that the rest of the payload slot is zeroed.
If we ran out of payload slots during the write process (Which can
happen since we don't know the size of the payload beforehand), we have
to abort the Key Hash Generation before parsing the next sample.
The rtps_endpoint only sends the source timestamp (TIME_INVALID if no
source timestamp provided). If ordering BY_RECEPTION, the sample is added
to the list tail. If ordering BY_SOURCE the samples are ordered
according to the source timestamp, but droped if the source timestamp is
earlier than a sample that has been read by the user or INVALID (Ensures
determenistic behavior).
Finalized DDS Reader interface. Implemented read/take,
read_next_sample/take_next_sample, read_instance/take_instance,
read_next_instance/take_next_instance operations.
Instance Get operations were made generic to allow returning 2 variants
of instance data.
in order to support the read_next_instance/take_next_instance
operations, the instances have to have a a logical order. Whie the
previous implementation did have a logical order for inserted instances
(Since they are added in a linked list), we need to support relative
ordering also for non-inserted instances (acording to DDS Spec), so we
just order them in ascending order.
Generation Counters are always needed (e.g. for the calculation of the
view_state, since they are dependent on the reading of samples of the
last generation). As such, the Generation Counters were "converted" to
mandatory fields.
It was decided to connect the DDS Endpoint directly to the RTPS
Endpoint. The history_cache Entity will be converted to a generic
History Cache acording to the RTPS Specification.
Because of consistency requirements the implementation was changed to a
single process/single port RAM design.
This should fully (blindly) implement the RTPS Reader side of the DDS
Entity.
The Sample Memory was changed to contain only the Instance Memory
Address instead of the whole Key Hash. This simplifies the B process and
reduces memory footprint.
The instance memory process was also updated to handle the conditional
fields defined in the previous commit.
Redefined Sample Memory Format. The design decision was made to handle
most (if not all) of the DDS QOS inside the History Cache, which allows
storing needed information in a more efiicient way.
A (dual port) Instance Memory was added into the HC, to support the QOS
operations.
This commit only implements the A side processes for the READER case.
RESOURCE_LIMITS_QOS, TIME_BASED_FILTER_QOS, and HISTORY_QOS are handled.
The inter-entity communication was changed to allow the HC to mark
parsed changes as rejected, and allow future re-transmission (in the
case of Reliable communication).
Revert changes made in commit 06ed44c to the memory FSMs.
NOTE: This commit only reverts the changes in rtps_builtin_endpoint. The rest of the reverted changes are merged with following commits.
Initial imeplementation of the RTPS Reader side of the history cache.
A key_hash_generator entity that will house the future MD5 hash
calculation was also added, along with the entity definition of
key_generator, which has to be implemented per-topic-type.
While previously we sent the EntityID before the GUID Prefix (for some
reason), we changed swaped the order to allow easier decoding (by having
uniform format for all inputs)
- Change Testbench naming Convention (File and Internal)
- Remove Component declarations and use direct instantiating
* Add more static generated SLVs in rtps_config_package
- Remove endpoint data from memory. Store only participant data
- Write PARTICIPANT_UNMATCH_FRAME to all endpoints on remote participant removal
- Write ENDPOINT_MATCH and ENDPOINT_UNMATCH frames for all remote endpoints
* Update testbenches to accomodate re-design
* Streamline scorboard reference pushing and testbench completion detection
- Unify get_loc functions
- Overload functions with less parameters for defaults
- Add Parameter Corruption Injection to Participant and Endpoint Data Generators
* Small change in rtps_builtin_endpoint_test1
- Empty Signal was not toggling
* Added rtps_builtin_endpoint_test2
- Compiling and Passing
* Update rtps_test_package
* Various bug Fixes in rtps_builtin_endpoint
* Add test RAM (Used for testbenches)
* Add Data Structures and functions to check memory contents
* Add rtps_builtin_endpoint_test1
- Compiles and Passes
* Various bug fixes in rtps_builtin_endpoint to Pass testbench
- Handle case where packet end = submessage end (Avoid extra stage switches)
- Fix last_word_out
- Fix case where rd and empty are both high (INFO_TS)
* Modify Endpoint Frame format of GAP
- Add dummy word to avoid complexity
* rtps_handler Testbench
- Add check for last_word_out
