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cndm: Rework desc/cpl mux/demux logic, add support for CQNs, implement queue allocation

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich
2026-03-03 18:09:38 -08:00
parent 8494e734a8
commit 6bf7240686
9 changed files with 326 additions and 216 deletions
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32
src/cndm/tb/cndm.py
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@@ -115,7 +115,7 @@ class Port:
0x00000000, # flags
self.index, # port
0, # cqn
0, # eqn
self.index, # eqn
0, # pd
self.rxcq_log_size, # size
0, # dboffs
@@ -126,7 +126,10 @@ class Port:
0, # rsvd
0, # rsvd
))
print(rsp)
rsp_unpacked = struct.unpack("<HHLLLLLLLQQLLLL", rsp)
print(rsp_unpacked)
self.rx_cqn = rsp_unpacked[4]
self.rxq = self.driver.pool.alloc_region(self.rxq_size*16)
addr = self.rxq.get_absolute_address(0)
@@ -137,7 +140,7 @@ class Port:
0x00000000, # flags
self.index, # port
0, # rqn
0, # cqn
self.rx_cqn, # cqn
0, # pd
self.rxq_log_size, # size
0, # dboffs
@@ -148,9 +151,11 @@ class Port:
0, # rsvd
0, # rsvd
))
print(rsp)
self.rxq_db_offs = struct.unpack_from("<L", rsp, 7*4)[0]
rsp_unpacked = struct.unpack("<HHLLLLLLLQQLLLL", rsp)
print(rsp_unpacked)
self.rx_rqn = rsp_unpacked[4]
self.rxq_db_offs = rsp_unpacked[8]
self.txcq = self.driver.pool.alloc_region(self.txcq_size*16)
addr = self.txcq.get_absolute_address(0)
@@ -160,8 +165,8 @@ class Port:
CNDM_CMD_OP_CREATE_CQ, # opcode
0x00000000, # flags
self.index, # port
1, # cqn
0, # eqn
0, # cqn
self.index, # eqn
0, # pd
self.txcq_log_size, # size
0, # dboffs
@@ -172,7 +177,10 @@ class Port:
0, # rsvd
0, # rsvd
))
print(rsp)
rsp_unpacked = struct.unpack("<HHLLLLLLLQQLLLL", rsp)
print(rsp_unpacked)
self.tx_cqn = rsp_unpacked[4]
self.txq = self.driver.pool.alloc_region(self.txq_size*16)
addr = self.txq.get_absolute_address(0)
@@ -183,7 +191,7 @@ class Port:
0x00000000, # flags
self.index, # port
0, # sqn
1, # cqn
self.tx_cqn, # cqn
0, # pd
self.txq_log_size, # size
0, # dboffs
@@ -194,9 +202,11 @@ class Port:
0, # rsvd
0, # rsvd
))
print(rsp)
self.txq_db_offs = struct.unpack_from("<L", rsp, 7*4)[0]
rsp_unpacked = struct.unpack("<HHLLLLLLLQQLLLL", rsp)
print(rsp_unpacked)
self.tx_sqn = rsp_unpacked[4]
self.txq_db_offs = rsp_unpacked[8]
await self.refill_rx_buffers()