Behavioral Architecture Reference

Functions
std_logic_vector	setHeader ( request: in integer address: in integer count: in integer tag: in integer )
	Set the fields in the PCIe TLP header.
std_logic_vector	pcieAddress ( blocknum: in unsigned )
unsigned	numTrimBlocksNvme ( total: in unsigned , current: in unsigned )
	Pcie packets to this module The number of blocks to trim based on how many 4k blocks left to trim.
unsigned	numTrimBlocks ( total: in unsigned , current: in unsigned )
PcieRequestHeadType	sendBlockHeader ( headIn: in PcieRequestHeadType )

Processes
PROCESS_7	( clk )
PROCESS_8	( clk )
	Need to wait here.
PROCESS_9	( clk )
	Need to wait here.
PROCESS_10	( clk )
PROCESS_11	( clk )

Components
Fifo	<Entity Fifo>
	Simulation.

Constants
TCQ	time := 1 ns
SendFullBlock	boolean := True
	Collate the smallish PCIe packets into a full NvmeStorage block packet.
NvmeBlocks	integer := BlockSize / NvmeBlockSize
	The number of Nvme blocks per NvmeStorage system block.
TrimNum	integer := ( 32768 / NvmeBlocks )
	The number of 4k blocks trimmed in one trim instructions.

Types
StateType	( STATE_IDLE , STATE_INIT , STATE_RUN , STATE_COMPLETE , STATE_QUEUE_HEAD , STATE_QUEUE_0 , STATE_QUEUE_1 , STATE_QUEUE_2 , STATE_QUEUE_3 , STATE_WAIT_REPLY , STATE_TQUEUE_HEAD , STATE_TQUEUE_0 , STATE_TQUEUE_1 , STATE_TQUEUE_2 , STATE_TQUEUE_3 )
ReplyStateType	( REPSTATE_IDLE , REPSTATE_INIT , REPSTATE_COMPLETE , REPSTATE_QUEUE_REPLY1 , REPSTATE_QUEUE_REPLY2 )
MemStateType	( MEMSTATE_IDLE , MEMSTATE_NEXT , MEMSTATE_WRITE )
SendStateType	( SENDSTATE_IDLE , SENDSTATE_WRITE )
	Send blocks state.

Subtypes
RegisterType	unsigned ( 31 downto 0 )
	The output data.

Signals
state	StateType := STATE_IDLE
replyState	ReplyStateType := REPSTATE_QUEUE_REPLY1
nvmeReplyHead	NvmeReplyHeadType
control	RegisterType := ( others = > ' 0 ' )
	Control register.
status	RegisterType := ( others = > ' 0 ' )
	Status register.
dataStart	RegisterType := ( others = > ' 0 ' )
	The data chunk start position in blocks.
dataSize	RegisterType := ( others = > ' 0 ' )
	The data chunk size in blocks.
error	RegisterType := ( others = > ' 0 ' )
	The system errors status.
enabled	std_logic := ' 0 '
	Read is enabled.
performTrim	std_logic := ' 0 '
	Perform a trim operation.
complete	std_logic := ' 0 '
	Read is complete.
numBlocksProc	unsigned ( 31 downto 0 ) := ( others = > ' 0 ' )
	Number of block write requests sent.
numBlocksTrim	unsigned ( 31 downto 0 ) := ( others = > ' 0 ' )
	Number of blocks trimmed in once operation.
numBlocksDone	unsigned ( 31 downto 0 ) := ( others = > ' 0 ' )
	Number of block write completions received.
memState	MemStateType := MEMSTATE_IDLE
memPacketCount	unsigned ( 7 downto 0 )
memRequestHead	PcieRequestHeadType
fifoReset	std_logic
fifoNearFull	std_logic
fifoInReady	std_logic
fifoInValid	std_logic
fifoInData	std_logic_vector ( 127 downto 0 )
fifoOutValid	std_logic
fifoOutReady	std_logic
fifoOutData	std_logic_vector ( 127 downto 0 )
sendState	SendStateType := SENDSTATE_IDLE
sendCount	unsigned ( 8 downto 0 )
	Send block word count.

Instantiations
fifo0	Fifo <Entity Fifo>

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The documentation for this class was generated from the following file:

• /src/dune/source/DuneNvme/src/NvmeRead.vhd