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哈希：c325b4024d61fe20f8140d6891074ca7276c4d58 作者：Nick Price <nick@spun.io> 提交者：Adrian Chadd <adrian@FreeBSD.org> 提交时间：2026-07-20 00:48:23 +0800 提交信息： aq(4): correct Atlantic 2 register access Four Atlantic 2 register-access corrections found in bring-up. B0 aggregate octet counters: the B0 firmware statistics interface reports only aggregate rx/tx good octets, not the per-cast breakdown A0 and Atlantic 1 provide, so every octet sysctl read a permanent zero while frame counters advanced. Populate the aggregate octet fields from the B0 buffer; aq_update_hw_stats() accumulates them directly when the per-cast octets are absent. Drop the duplicate attach-time MCP reboot: aq_hw_mpi_create() already reboots the A2 firmware to read its version and caps, then aq_hw_reset() immediately rebooted it again -- a full MCP restart plus several transaction-id-bracketed window reads, adding attach latency and a duplicate banner. Give aq_hw_reset() a reboot flag and pass reboot=false for A2 at attach; the load-bearing down/stop reboot (which resyncs A2 RX DMA across ifconfig down/up) keeps reboot=true. Skip Atlantic 1 register accesses on Atlantic 2: gate out the 0x7040 Atlantic 1 TPO write (which A2 lacks; already a no-op via the unset TPO2 feature, but Linux hw_atl2 omits it), and guard the aq_hw_mpi_read_stats() direct reads of reg_rx_dma_stat_counter7 (dpc) and the LRO counter (cprc) with !ATLANTIC2 -- those are Atlantic 1 codegen offsets that on Atlantic 2 land on unrelated registers and can report bogus input-drop / LRO counts. HW-validated on AQC107 <-> AQC113C: A1 stats unchanged, A2 IQDROPS stays 0, attach consumes one MCP reboot instead of two, bidirectional iperf3 clean. Reviewed by: adrian Differential Revision: https://reviews.freebsd.org/D58143