CVS commit: src/sys/dev/pci

["SAITOH Masanobu" <msaitoh%netbsd.org@localhost>]

Module Name:    src
Committed By:   msaitoh
Date:           Thu May 11 07:14:46 UTC 2023

Modified Files:
        src/sys/dev/pci: if_wm.c if_wmreg.h if_wmvar.h

Log Message:
 Some statistics registers were replaced with new counters.

 - 0x403c was CEXTERR(Carrier Extension Error). 82575 and newer except 80003,
   ICHs and PCHs have HTDPMC(Host Tx Discarded Packets by MAC). I don't really
   know for 82575. The 82575 datasheet say nothing about it.
 - The following two are changed for circuit breaker. Only 82576's datasheet
   describes abut it, so the registers might be only for 82576.
   Use those registers for 82575 and newer except 80003, ICHs and PCHs just in
   case.
   - 0x40fc was TSCTFC(TCP Segmentation Context Tx Fail). It was replaced by
     the CBRMPC(Circuit Breaker Rx Manageability Packet) register.
   - 0x4124 was ICRXOC(Interrupt Cause Receiver Overrun). It was replaced by
     the HTCBDPC(Host Tx Circuit Breaker Dropped Packet) register.
 - From 0x4104 to 0x4124:
   - For 0x4124, 82575's datasheet says it's not changed(ICRXOC).
     I don't know if it's correct. We use new HTCBDPC register for 82575.
   - 82576 and newer changed the meaning.
   - I don't know for 80003, ICHs and PCHs. Don't count those registers.
     At least, those registers in PCH2 and PCH_CNP are all zero.


To generate a diff of this commit:
cvs rdiff -u -r1.774 -r1.775 src/sys/dev/pci/if_wm.c
cvs rdiff -u -r1.128 -r1.129 src/sys/dev/pci/if_wmreg.h
cvs rdiff -u -r1.48 -r1.49 src/sys/dev/pci/if_wmvar.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.