oh/elink/hdl/elink_regmap.v

`ifndef ELINK_REGMAP_V_
`define ELINK_REGMAP_V_

//MEMORY MAP

//[31:20] = LINKID
//[19:16] = GROUP SELECT 
//[15]    = MMU SELECT (for RX/TX)
//[14:11] = USED BY MMU ONLY
//[10:8]  = register group
//[7:2]   = REGISTER ADDRESS (0..63)
//[1:0]   = IGNORED (no byte access)

//Link register groups addr[19:16]
`define EGROUP_MMR     4'hF // reserved for registers
`define EGROUP_MMU     4'hE // RX & TX MMU
`define EGROUP_RR      4'hD // read response block

//ETX-REGS
`define E_RESET        6'd0 //F0200-reset
`define E_CLK          6'd1 //F0204-clock configuration
`define E_CHIPID       6'd2 //F0208-Epiphany chip id for colid/rowid pins 
`define E_VERSION      6'd3 //F020C-version #
`define ETX_CFG        6'd4 //F0210-config
`define ETX_STATUS     6'd5 //F0214-tx status
`define ETX_GPIO       6'd6 //F0218-direct data for tx pins

//ERX-REGS
`define ERX_CFG        6'd0 //F0300-config
`define ERX_STATUS     6'd1 //F0304-status register
`define ERX_GPIO       6'd2 //F0308-sampled data
`define ERX_OFFSET     6'd3 //F030C-memory base for remap

`define ERX_IDELAY0    6'd6 //F0318-tap delay for d[5:0]
`define ERX_IDELAY1    6'd7 //F031c-tap delays for {frame,d[7:6]}
`define ERX_TESTDATA   6'd8 //F0320-

//MAILBOX 
`ifndef E_MAILBOXLO	
 `define E_MAILBOXLO    6'd4 //F0310-reserved
`endif
`ifndef E_MAILBOXHI	
 `define E_MAILBOXHI    6'd5 //F0314-reserved
`endif

//DMA (same numbering as in Epiphany, limit to 4 channels)
`define DMACFG         5'd0 //F0500/F0520
`define DMACOUNT       5'd1 //F0504/F0524
`define DMASTRIDE      5'd2 //F0508/F0528
`define DMASRCADDR     5'd3 //F050C/F052c
`define DMADSTADDR     5'd4 //F0510/F0530
`define DMAAUTO0       5'd5 //F0514/F0534
`define DMAAUTO1       5'd6 //F0518/F0538
`define DMASTATUS      5'd7 //F051C/F053c

`endif