Re: kern/53524: ahcisata0 channel 0: clearing WDCTL_RST failed

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

The following reply was made to PR kern/53524; it has been noted by GNATS.

From: Patrick Welche <prlw1%cam.ac.uk@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/53524: ahcisata0 channel 0: clearing WDCTL_RST failed
Date: Mon, 17 Sep 2018 09:23:26 +0100

 I experienced something similar on another Ryzen based system
 (Asus Prime X370-PRO) in:
 
 http://mail-index.netbsd.org/port-amd64/2018/08/24/msg002744.html
 
 A working system with 6 SATA disks developed 
 
 ahcisata0 channel 3: timeout sending FIS        
 autoconfiguration error: ahcisata0 channel 3: clearing WDCTL_RST failed for drive 15                                       
 
 on all drives after a BIOS update from version 3803 to 4012.
 
 Martin's suggestion in this PR allows me to boot as before.
 
 Index: ahcisata_pci.c
 ===================================================================
 RCS file: /cvsroot/src/sys/dev/pci/ahcisata_pci.c,v
 retrieving revision 1.38
 diff -u -r1.38 ahcisata_pci.c
 --- ahcisata_pci.c      13 Oct 2016 17:11:09 -0000      1.38
 +++ ahcisata_pci.c      17 Sep 2018 08:17:56 -0000
 @@ -49,6 +49,7 @@
  };
  
  static const struct ahci_pci_quirk ahci_pci_quirks[] = {
 +       { PCI_VENDOR_AMD, 0x43b5, AHCI_QUIRK_SKIP_RESET },
         { PCI_VENDOR_NVIDIA, PCI_PRODUCT_NVIDIA_MCP65_SATA,
             AHCI_PCI_QUIRK_FORCE | AHCI_QUIRK_BADPMP },
         { PCI_VENDOR_NVIDIA, PCI_PRODUCT_NVIDIA_MCP65_SATA2,
 
 
 Changing the timeout in
 
   https://nxr.netbsd.org/xref/src/sys/dev/ic/ahcisata_core.c#820
 
 from 310 to 620 didn't help. Oddly, after a cold boot, I see no disks
 on ahcisata0. (I always see the M.2 disk on ahcisata1 - AMD product 7901.)
 On (warm) reboot, some of the disks manage to reset.