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cndm: Read config in driver model

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich
2026-03-08 00:08:05 -08:00
parent dde401e095
commit e2823a65ef
1 changed files with 190 additions and 2 deletions
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192
src/cndm/tb/cndm.py
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@@ -9,6 +9,7 @@ Authors:
"""
import array
import datetime
import logging
import struct
from collections import deque
@@ -19,6 +20,8 @@ from cocotb.queue import Queue
# Command opcodes
CNDM_CMD_OP_NOP = 0x0000
CNDM_CMD_OP_CFG = 0x0100
CNDM_CMD_OP_ACCESS_REG = 0x0180
CNDM_CMD_OP_PTP = 0x0190
@@ -605,6 +608,44 @@ class Driver:
self.free_packets = deque()
self.allocated_packets = []
# config
self.cfg_page_max = None
self.cmd_ver = None
# FW ID
self.fpga_id = None
self.fw_id = None
self.fw_ver = None
self.board_id = None
self.board_ver = None
self.build_date = None
self.git_hash = None
self.release_info = None
# HW config
self.sys_clk_per_ns_num = None
self.sys_clk_per_ns_den = None
self.ptp_clk_per_ns_num = None
self.ptp_clk_per_ns_den = None
# Resources
self.log_max_eq = None
self.log_max_eq_sz = None
self.eq_pool = None
self.eqe_ver = None
self.log_max_cq = None
self.log_max_cq_sz = None
self.cq_pool = None
self.cqe_ver = None
self.log_max_sq = None
self.log_max_sq_sz = None
self.sq_pool = None
self.sqe_ver = None
self.log_max_rq = None
self.log_max_rq_sz = None
self.rq_pool = None
self.rqe_ver = None
async def init_pcie_dev(self, dev):
self.dev = dev
self.pool = dev.rc.mem_pool
@@ -618,10 +659,156 @@ class Driver:
await self.init_common()
async def init_common(self):
self.port_count = await self.hw_regs.read_dword(0x0100)
# Get config information
rsp = await self.exec_cmd(struct.pack("<HHLHHLLLLLLLLLLLLL",
0, # rsvd
CNDM_CMD_OP_CFG, # opcode
0x00000000, # flags
0, # cfg_page
0, # num_cfg_pages
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
))
rsp_unpacked = struct.unpack("<HHLHHLLLLLLLLLLLLL", rsp)
print(rsp_unpacked)
self.cfg_page_max = rsp_unpacked[4]
self.cmd_ver = rsp_unpacked[5]
self.log.info("Config pages: %d", self.cfg_page_max+1)
self.log.info("Command version: %d.%d.%d", self.cmd_ver >> 20, (self.cmd_ver >> 12) & 0xff, self.cmd_ver & 0xfff)
self.fpga_id = rsp_unpacked[10]
self.fw_id = rsp_unpacked[11]
self.fw_ver = rsp_unpacked[12]
self.board_id = rsp_unpacked[13]
self.board_ver = rsp_unpacked[14]
self.build_date = rsp_unpacked[15]
self.git_hash = rsp_unpacked[16]
self.release_info = rsp_unpacked[17]
self.log.info("FPGA JTAG ID: 0x%08x", self.fpga_id)
self.log.info("FW ID: 0x%08x", self.fw_id)
self.log.info("FW version: %d.%d.%d", self.fw_ver >> 20, (self.fw_ver >> 12) & 0xff, self.fw_ver & 0xfff)
self.log.info("Board ID: 0x%08x", self.board_id)
self.log.info("Board version: %d.%d.%d", self.board_ver >> 20, (self.board_ver >> 12) & 0xff, self.board_ver & 0xfff)
self.log.info("Build date: %s UTC (raw: 0x%08x)", datetime.datetime.fromtimestamp(self.build_date, datetime.timezone.utc).isoformat(' '), self.build_date)
self.log.info("Git hash: %08x", self.git_hash)
self.log.info("Release info: %08x", self.release_info)
# Get config information
rsp = await self.exec_cmd(struct.pack("<HHLHHLLLLLLLLLLLLL",
0, # rsvd
CNDM_CMD_OP_CFG, # opcode
0x00000000, # flags
1, # cfg_page
0, # num_cfg_pages
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
))
rsp_unpacked = struct.unpack("<HHLHHLLLLLLLLLLLLL", rsp)
print(rsp_unpacked)
self.port_count = rsp_unpacked[10] & 0xff
self.sys_clk_per_ns_den = rsp_unpacked[14] & 0xffff
self.sys_clk_per_ns_num = rsp_unpacked[14] >> 16
self.ptp_clk_per_ns_den = rsp_unpacked[15] & 0xffff
self.ptp_clk_per_ns_num = rsp_unpacked[15] >> 16
self.log.info("Port count: %d", self.port_count)
self.log.info("Sys clock period: %f MHz (raw %d/%d ns)",
1000/(self.sys_clk_per_ns_num/self.sys_clk_per_ns_den),
self.sys_clk_per_ns_num, self.sys_clk_per_ns_den)
self.log.info("PTP clock period: %f MHz (raw %d/%d ns)",
1000/(self.ptp_clk_per_ns_num/self.ptp_clk_per_ns_den),
self.ptp_clk_per_ns_num, self.ptp_clk_per_ns_den)
# Get config information
rsp = await self.exec_cmd(struct.pack("<HHLHHLLLLLLLLLLLLL",
0, # rsvd
CNDM_CMD_OP_CFG, # opcode
0x00000000, # flags
2, # cfg_page
0, # num_cfg_pages
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
))
rsp_unpacked = struct.unpack("<HHLHHLLLLLLLLLLLLL", rsp)
print(rsp_unpacked)
# Resources
self.log_max_eq = rsp_unpacked[10] & 0xff
self.log_max_eq_sz = (rsp_unpacked[10] >> 8) & 0xff
self.eq_pool = (rsp_unpacked[10] >> 16) & 0xff
self.eqe_ver = (rsp_unpacked[10] >> 24) & 0xff
self.log_max_cq = rsp_unpacked[11] & 0xff
self.log_max_cq_sz = (rsp_unpacked[11] >> 8) & 0xff
self.cq_pool = (rsp_unpacked[11] >> 16) & 0xff
self.cqe_ver = (rsp_unpacked[11] >> 24) & 0xff
self.log_max_sq = rsp_unpacked[12] & 0xff
self.log_max_sq_sz = (rsp_unpacked[12] >> 8) & 0xff
self.sq_pool = (rsp_unpacked[12] >> 16) & 0xff
self.sqe_ver = (rsp_unpacked[12] >> 24) & 0xff
self.log_max_rq = rsp_unpacked[13] & 0xff
self.log_max_rq_sz = (rsp_unpacked[13] >> 8) & 0xff
self.rq_pool = (rsp_unpacked[13] >> 16) & 0xff
self.rqe_ver = (rsp_unpacked[13] >> 24) & 0xff
self.log.info("Max EQ count: %d (log %d)", 2**self.log_max_eq, self.log_max_eq)
self.log.info("Max EQ size: %d (log %d)", 2**self.log_max_eq_sz, self.log_max_eq_sz)
self.log.info("EQ pool: %d", self.eq_pool)
self.log.info("EQE version: %d", self.eqe_ver)
self.log.info("Max CQ count: %d (log %d)", 2**self.log_max_cq, self.log_max_cq)
self.log.info("Max CQ size: %d (log %d)", 2**self.log_max_cq_sz, self.log_max_cq_sz)
self.log.info("CQ pool: %d", self.cq_pool)
self.log.info("CQE version: %d", self.cqe_ver)
self.log.info("Max SQ count: %d (log %d)", 2**self.log_max_sq, self.log_max_sq)
self.log.info("Max SQ size: %d (log %d)", 2**self.log_max_sq_sz, self.log_max_sq_sz)
self.log.info("SQ pool: %d", self.sq_pool)
self.log.info("SQE version: %d", self.sqe_ver)
self.log.info("Max RQ count: %d (log %d)", 2**self.log_max_rq, self.log_max_rq)
self.log.info("Max RQ size: %d (log %d)", 2**self.log_max_rq_sz, self.log_max_rq_sz)
self.log.info("RQ pool: %d", self.rq_pool)
self.log.info("RQE version: %d", self.rqe_ver)
# Get PTP information
rsp = await self.exec_cmd(struct.pack("<HHLLLQQQQQLL",
0, # rsvd
@@ -644,6 +831,7 @@ class Driver:
nom_period = rsp_unpacked[8]
self.log.info("PHC nominal period: %.09f ns (raw 0x%x)", nom_period / 2**32, nom_period)
# Test setting PTP time
rsp = await self.exec_cmd(struct.pack("<HHLLLQQQQQLL",
0, # rsvd
CNDM_CMD_OP_PTP, # opcode
@@ -651,7 +839,7 @@ class Driver:
0, # fns
0x12345678, # tod_ns
0x123456654321, # tod_sec
0x11223344, # rel_ns
0x112233445566, # rel_ns
0, # ptm
0, # nom_period
nom_period, # period