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eth: Use SV enums in MAC logic

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich
2026-02-27 15:04:08 -08:00
parent 8d7cdaa689
commit 5df2aa3cfd
12 changed files with 266 additions and 179 deletions
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48
src/eth/rtl/taxi_axis_xgmii_tx_32.sv
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@@ -98,28 +98,40 @@ if (s_axis_tx.DATA_W != DATA_W)
if (s_axis_tx.USER_W != USER_W)
$fatal(0, "Error: Interface USER_W parameter mismatch (instance %m)");
localparam [7:0]
typedef enum logic [7:0] {
ETH_PRE = 8'h55,
ETH_SFD = 8'hD5;
ETH_SFD = 8'hD5
} eth_pre_t;
localparam [7:0]
XGMII_IDLE = 8'h07,
XGMII_START = 8'hfb,
XGMII_TERM = 8'hfd,
XGMII_ERROR = 8'hfe;
typedef enum logic [7:0] {
XGMII_IDLE = 8'h07,
XGMII_LPI = 8'h06,
XGMII_START = 8'hfb,
XGMII_TERM = 8'hfd,
XGMII_ERROR = 8'hfe,
XGMII_SEQ_OS = 8'h9c,
XGMII_RES_0 = 8'h1c,
XGMII_RES_1 = 8'h3c,
XGMII_RES_2 = 8'h7c,
XGMII_RES_3 = 8'hbc,
XGMII_RES_4 = 8'hdc,
XGMII_RES_5 = 8'hf7,
XGMII_SIG_OS = 8'h5c
} xgmii_ctrl_t;
localparam [3:0]
STATE_IDLE = 4'd0,
STATE_PREAMBLE = 4'd1,
STATE_PAYLOAD = 4'd2,
STATE_PAD = 4'd3,
STATE_FCS_1 = 4'd4,
STATE_FCS_2 = 4'd5,
STATE_FCS_3 = 4'd6,
STATE_ERR = 4'd7,
STATE_IFG = 4'd8;
typedef enum logic [3:0] {
STATE_IDLE,
STATE_PREAMBLE,
STATE_PAYLOAD,
STATE_PAD,
STATE_FCS_1,
STATE_FCS_2,
STATE_FCS_3,
STATE_ERR,
STATE_IFG
} state_t;
logic [3:0] state_reg = STATE_IDLE, state_next;
state_t state_reg = STATE_IDLE, state_next;
// datapath control signals
logic reset_crc;