mirror of
https://github.com/firestar5683/StarPilot.git
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firestar5683
22a8575199
Keep official openpilot ancestry and dependency licenses. Store resources directly in Git, remove LFS setup requirements, and leave the downloadable big model outside the source tree.
38 lines
1.7 KiB
Python
38 lines
1.7 KiB
Python
#!/usr/bin/env python3
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"""CPU-driven SEND/RECV through PHY loopback. Run with PYTHONPATH=."""
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import atexit, time
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from tinygrad.helpers import getenv
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from tinygrad.runtime.autogen import bnxt
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from tinygrad.runtime.support.rdma.bnxtdev import BNXTDev, BNXTQP
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from tinygrad.runtime.support.system import PCIDevice
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if __name__ == "__main__":
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dev = BNXTDev(PCIDevice("bnxt", getenv("BNXT_PCI", "0000:41:00.0")))
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atexit.register(dev.fini)
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tx, rx = BNXTQP(dev), BNXTQP(dev)
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tx.connect(rx.qpn, dev.local_gid, dev.mac)
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rx.connect(tx.qpn, dev.local_gid, dev.mac)
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src, src_pages = dev.pci_dev.alloc_sysmem(size := getenv("SIZE", 0x2000))
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dst, dst_pages = dev.pci_dev.alloc_sysmem(size)
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skey, dkey = dev.register_mem(src_pages, size), dev.register_mem(dst_pages, size)
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dev.hwrm("port_phy_cfg", port_id=dev.port_id, enables=bnxt.PORT_PHY_CFG_REQ_ENABLES_LPBK, lpbk=bnxt.PORT_PHY_CFG_REQ_LPBK_LOCAL)
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try:
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time.sleep(1)
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for i in range(getenv("ITERS", 257)):
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src[:], dst[:] = (message := bytes([i % 255 + 1]) * size), bytes(size)
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if i % 2: # Force RNR retries at nonzero MSN indices, including after ring wrap.
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tx.post_send(src_pages[0], skey, size)
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time.sleep(0.01)
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rx.post_recv(dst_pages[0], dkey, size)
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else:
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rx.post_recv(dst_pages[0], dkey, size)
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tx.post_send(src_pages[0], skey, size)
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tx.poll(tx.scq, tx.scq_id)
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rx.poll(rx.rcq, rx.rcq_id)
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assert bytes(dst[:]) == message, f"loopback mismatch at iteration {i}"
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print(f"BNXT SEND/RECV loopback passed: {i + 1} x {size} bytes")
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finally:
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dev.hwrm("port_phy_cfg", port_id=dev.port_id, enables=bnxt.PORT_PHY_CFG_REQ_ENABLES_LPBK, lpbk=bnxt.PORT_PHY_CFG_REQ_LPBK_NONE)
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dev.unregister_mem(skey)
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dev.unregister_mem(dkey)
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