[src/trunk]: src/sys/dev/pci Use ixl_atq_exec for waiting the Get link status...

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

details:   https://anonhg.NetBSD.org/src/rev/847c087cedee
branches:  trunk
changeset: 1007892:847c087cedee
user:      yamaguchi <yamaguchi%NetBSD.org@localhost>
date:      Tue Mar 03 04:34:45 2020 +0000

description:
Use ixl_atq_exec for waiting the Get link status response of ixl(4)
not to send the same command at once

reviewed by knakahara@n.o., thanks.

diffstat:

 sys/dev/pci/if_ixl.c |  33 +++++++++++++++++++++++++--------
 1 files changed, 25 insertions(+), 8 deletions(-)

diffs (84 lines):

diff -r 5934339a0aa5 -r 847c087cedee sys/dev/pci/if_ixl.c
--- a/sys/dev/pci/if_ixl.c      Tue Mar 03 04:22:45 2020 +0000
+++ b/sys/dev/pci/if_ixl.c      Tue Mar 03 04:34:45 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_ixl.c,v 1.58 2020/03/03 04:22:45 yamaguchi Exp $    */
+/*     $NetBSD: if_ixl.c,v 1.59 2020/03/03 04:34:45 yamaguchi Exp $    */
 
 /*
  * Copyright (c) 2013-2015, Intel Corporation
@@ -74,7 +74,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_ixl.c,v 1.58 2020/03/03 04:22:45 yamaguchi Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_ixl.c,v 1.59 2020/03/03 04:34:45 yamaguchi Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_net_mpsafe.h"
@@ -778,6 +778,7 @@
 static int     ixl_atq_post_locked(struct ixl_softc *, struct ixl_atq *);
 static void    ixl_atq_done(struct ixl_softc *);
 static int     ixl_atq_exec(struct ixl_softc *, struct ixl_atq *);
+static int     ixl_atq_exec_locked(struct ixl_softc *, struct ixl_atq *);
 static int     ixl_get_version(struct ixl_softc *);
 static int     ixl_get_nvm_version(struct ixl_softc *);
 static int     ixl_get_hw_capabilities(struct ixl_softc *);
@@ -3660,6 +3661,7 @@
        struct ixl_softc *sc = xsc;
        struct ixl_aq_desc *iaq;
        struct ixl_aq_link_param *param;
+       int error;
 
        mutex_enter(&sc->sc_atq_lock);
 
@@ -3669,7 +3671,13 @@
        param = (struct ixl_aq_link_param *)iaq->iaq_param;
        param->notify = IXL_AQ_LINK_NOTIFY;
 
-       (void)ixl_atq_post_locked(sc, &sc->sc_link_state_atq);
+       error = ixl_atq_exec_locked(sc, &sc->sc_link_state_atq);
+       if (error == 0) {
+               ixl_get_link_status_done(sc, iaq);
+       }
+
+       ixl_atq_set(&sc->sc_link_state_atq, ixl_get_link_status_done);
+
        mutex_exit(&sc->sc_atq_lock);
 }
 
@@ -3894,20 +3902,29 @@
 {
        int error;
 
+       mutex_enter(&sc->sc_atq_lock);
+       error = ixl_atq_exec_locked(sc, iatq);
+       mutex_exit(&sc->sc_atq_lock);
+
+       return error;
+}
+
+static int
+ixl_atq_exec_locked(struct ixl_softc *sc, struct ixl_atq *iatq)
+{
+       int error;
+
+       KASSERT(mutex_owned(&sc->sc_atq_lock));
        KASSERT(iatq->iatq_desc.iaq_cookie == 0);
 
        ixl_atq_set(iatq, ixl_wakeup);
 
-       mutex_enter(&sc->sc_atq_lock);
        error = ixl_atq_post_locked(sc, iatq);
-       if (error) {
-               mutex_exit(&sc->sc_atq_lock);
+       if (error)
                return error;
-       }
 
        error = cv_timedwait(&sc->sc_atq_cv, &sc->sc_atq_lock,
            IXL_ATQ_EXEC_TIMEOUT);
-       mutex_exit(&sc->sc_atq_lock);
 
        return error;
 }