[src/jdolecek-ncq]: src/sys/dev/ata KASSERT() that chaosed xfer actually ends...

[jdolecek <jdolecek%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/cce190d26c4b
branches:  jdolecek-ncq
changeset: 352715:cce190d26c4b
user:      jdolecek <jdolecek%NetBSD.org@localhost>
date:      Fri Jul 21 17:32:27 2017 +0000

description:
KASSERT() that chaosed xfer actually ends up with error; might end up being
returned as successful due to bugs in error recovery code

diffstat:

 sys/dev/ata/atavar.h |  3 ++-
 sys/dev/ata/wd.c     |  8 ++++++--
 2 files changed, 8 insertions(+), 3 deletions(-)

diffs (53 lines):

diff -r 831fe7628d59 -r cce190d26c4b sys/dev/ata/atavar.h
--- a/sys/dev/ata/atavar.h      Wed Jul 19 20:26:52 2017 +0000
+++ b/sys/dev/ata/atavar.h      Fri Jul 21 17:32:27 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: atavar.h,v 1.92.8.17 2017/07/19 19:39:28 jdolecek Exp $        */
+/*     $NetBSD: atavar.h,v 1.92.8.18 2017/07/21 17:32:27 jdolecek Exp $        */
 
 /*
  * Copyright (c) 1998, 2001 Manuel Bouyer.
@@ -186,6 +186,7 @@
 #define        C_NCQ           0x0100          /* command is queued  */
 #define C_IMMEDIATE    0x0200          /* execute command without queuing */
 #define C_WAITTIMO     0x0400          /* race vs. timeout */
+#define C_CHAOS                0x0800          /* forced error xfer */
 
 /* reasons for c_kill_xfer() */
 #define KILL_GONE 1            /* device is gone while xfer was active */
diff -r 831fe7628d59 -r cce190d26c4b sys/dev/ata/wd.c
--- a/sys/dev/ata/wd.c  Wed Jul 19 20:26:52 2017 +0000
+++ b/sys/dev/ata/wd.c  Fri Jul 21 17:32:27 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: wd.c,v 1.428.2.27 2017/07/19 19:46:52 jdolecek Exp $ */
+/*     $NetBSD: wd.c,v 1.428.2.28 2017/07/21 17:32:27 jdolecek Exp $ */
 
 /*
  * Copyright (c) 1998, 2001 Manuel Bouyer.  All rights reserved.
@@ -54,7 +54,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.428.2.27 2017/07/19 19:46:52 jdolecek Exp $");
+__KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.428.2.28 2017/07/21 17:32:27 jdolecek Exp $");
 
 #include "opt_ata.h"
 #include "opt_wd.h"
@@ -713,6 +713,7 @@
                aprint_normal_dev(wd->sc_dev, "%s: chaos xfer %d\n",
                    __func__, xfer->c_slot);
                xfer->c_bio.blkno = 7777777 + wd->sc_capacity;
+               xfer->c_flags |= C_CHAOS;
        }
 #endif
 
@@ -893,6 +894,9 @@
 noerror:       if ((xfer->c_bio.flags & ATA_CORR) || xfer->c_retries > 0)
                        aprint_error_dev(wd->sc_dev,
                            "soft error (corrected)\n");
+#ifdef WD_CHAOS_MONKEY
+               KASSERT((xfer->c_flags & C_CHAOS) == 0);
+#endif
                break;
        case ERR_NODEV:
                bp->b_error = EIO;