CACHES Module

Description

The CACHES module implements an instruction cache, a data cache and an AXI adapter.

The module is connected to:

• TO_BE_COMPLETED

cva6_hpdcache_subsystem module IO ports

Signal	IO	Description	connexion	Type
clk_i	in	Subsystem Clock	SUBSYSTEM	logic
rst_ni	in	Asynchronous reset active low	SUBSYSTEM	logic
noc_req_o	out	noc request, can be AXI or OpenPiton	SUBSYSTEM	noc_req_t
noc_resp_i	in	noc response, can be AXI or OpenPiton	SUBSYSTEM	noc_resp_t
icache_en_i	in	Instruction cache enable	CSR_REGFILE	logic
icache_flush_i	in	Flush the instruction cache	CONTROLLER	logic
icache_areq_i	in	Input address translation request	EX_STAGE	icache_areq_t
icache_areq_o	out	Output address translation request	EX_STAGE	icache_arsp_t
icache_dreq_i	in	Input data translation request	FRONTEND	icache_dreq_t
icache_dreq_o	out	Output data translation request	FRONTEND	icache_drsp_t
dcache_enable_i	in	Data cache enable	CSR_REGFILE	logic
dcache_flush_i	in	Data cache flush	CONTROLLER	logic
dcache_flush_ack_o	out	Flush acknowledge	CONTROLLER	logic
dcache_amo_req_i	in	AMO request	EX_STAGE	ariane_pkg::amo_req_t
dcache_amo_resp_o	out	AMO response	EX_STAGE	ariane_pkg::amo_resp_t
dcache_req_ports_i	in	Data cache input request ports	EX_STAGE	dcache_req_i_t[NumPorts-1:0]
dcache_req_ports_o	out	Data cache output request ports	EX_STAGE	dcache_req_o_t[NumPorts-1:0]
wbuffer_empty_o	out	Write buffer status to know if empty	EX_STAGE	logic
wbuffer_not_ni_o	out	Write buffer status to know if not non idempotent	EX_STAGE	logic

Due to cv32a65x configuration, some ports are tied to a static value. These ports do not appear in the above table, they are listed below

As PerfCounterEn = 0,

icache_miss_o output is tied to 0

dcache_miss_o output is tied to 0

For any HW configuration,

dcache_cmo_req_i input is tied to 0

dcache_cmo_resp_o output is tied to open

hwpf_base_set_i input is tied to 0

hwpf_base_i input is tied to 0

hwpf_base_o output is tied to 0

hwpf_param_set_i input is tied to 0

hwpf_param_i input is tied to 0

hwpf_param_o output is tied to 0

hwpf_throttle_set_i input is tied to 0

hwpf_throttle_i input is tied to 0

hwpf_throttle_o output is tied to 0

hwpf_status_o output is tied to 0

Functionality

TO BE COMPLETED

Submodules

CACHES submodules