tests.integration.test_hostmem_read Namespace Reference

Classes
class	_Dut
class	TestHostMemReadOneOutstanding
class	TestHostMemReadFourOutstanding
class	TestHostMemRead8
class	TestHostMemRead512
class	TestHostMemRead2048
class	TestHostMemRead4096

Functions
	read_frame_log (monkeypatch)
bytes	_pattern (int num_bytes)
int	_as_int (v)
int	_wait_for_accepted (_Dut dut, int target, float timeout_s=30)
	_check_frames (expected_reads, bus_width)
None	_run (AcceleratorConnection conn, int max_outstanding, int bus_width=64)

Variables
list	ELEMENT_WIDTHS = [24, 32, 96]
list	GATED_READS
list	STREAMED_READS = [(i * 7 % 50, 1 + i % 3) for i in range(24)]
int	BUFFER_ELEMENTS = 4096

Detailed Description

Cosim tests for configurable widths and multiple outstanding HostMem reads.

`hw/hostmem_read.py` builds one host-driven `read_list` client per element
width under `CosimBSP(max_outstanding_reads=N)`. Each test closes the client's
response gate, queues several reads of varied lengths, checks that exactly
min(#reads, N) are accepted while nothing drains (so that many logical requests
are genuinely in flight inside `HostMemReadReqSplitter`), then opens the gate
and checks every returned element, the per-request element counts and that
`last` lands exactly on each request's final element.

Function Documentation

_as_int()

int tests.integration.test_hostmem_read._as_int ( v )

protected

Definition at line 64 of file test_hostmem_read.py.

Referenced by tests.integration.test_hostmem_read._Dut.check_responses().

_check_frames()

tests.integration.test_hostmem_read._check_frames ( expected_reads, bus_width )

protected

Check actual transport requests and responses, including zero padding.

Definition at line 129 of file test_hostmem_read.py.

Referenced by _run().

_pattern()

bytes tests.integration.test_hostmem_read._pattern ( int num_bytes )

protected

Definition at line 60 of file test_hostmem_read.py.

Referenced by _run().

_run()

None tests.integration.test_hostmem_read._run ( AcceleratorConnection conn, int max_outstanding, int bus_width = 64 )

protected

Definition at line 166 of file test_hostmem_read.py.

References _check_frames(), _pattern(), and _wait_for_accepted().

Referenced by tests.integration.test_hostmem_read.TestHostMemRead2048.test_reads(), tests.integration.test_hostmem_read.TestHostMemRead4096.test_reads(), tests.integration.test_hostmem_read.TestHostMemRead512.test_reads(), tests.integration.test_hostmem_read.TestHostMemRead8.test_reads(), tests.integration.test_hostmem_read.TestHostMemReadFourOutstanding.test_reads(), and tests.integration.test_hostmem_read.TestHostMemReadOneOutstanding.test_reads().

_wait_for_accepted()

int tests.integration.test_hostmem_read._wait_for_accepted ( _Dut dut, int target, float timeout_s = 30 )

protected

Definition at line 120 of file test_hostmem_read.py.

Referenced by _run().

read_frame_log()

tests.integration.test_hostmem_read.read_frame_log

(

monkeypatch

)

Definition at line 56 of file test_hostmem_read.py.

Variable Documentation

BUFFER_ELEMENTS

int tests.integration.test_hostmem_read.BUFFER_ELEMENTS = 4096

Definition at line 52 of file test_hostmem_read.py.

ELEMENT_WIDTHS

list tests.integration.test_hostmem_read.ELEMENT_WIDTHS = [24, 32, 96]

Definition at line 30 of file test_hostmem_read.py.

GATED_READS

list tests.integration.test_hostmem_read.GATED_READS

Initial value:

=  [
    (0, 120),
    (5, 1),
    (17, 3),
    (40, 7),
    (3, 90),
    (300, 2),
    (11, 33),
    (64, 5),
]

Definition at line 37 of file test_hostmem_read.py.

STREAMED_READS

list tests.integration.test_hostmem_read.STREAMED_READS = [(i * 7 % 50, 1 + i % 3) for i in range(24)]

Definition at line 49 of file test_hostmem_read.py.