[src/trunk]: src/sys/dev/pci Use I40E_PFINT_ITRN registers to enable ITR for ...

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

details:   https://anonhg.NetBSD.org/src/rev/b8896a68e00e
branches:  trunk
changeset: 970120:b8896a68e00e
user:      yamaguchi <yamaguchi%NetBSD.org@localhost>
date:      Fri Mar 13 05:49:52 2020 +0000

description:
Use I40E_PFINT_ITRN registers to enable ITR for MSI-X interrupts

diffstat:

 sys/dev/pci/if_ixl.c |  21 ++++++++++++++++-----
 1 files changed, 16 insertions(+), 5 deletions(-)

diffs (67 lines):

diff -r ef8a78e03c04 -r b8896a68e00e sys/dev/pci/if_ixl.c
--- a/sys/dev/pci/if_ixl.c      Fri Mar 13 05:40:20 2020 +0000
+++ b/sys/dev/pci/if_ixl.c      Fri Mar 13 05:49:52 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_ixl.c,v 1.63 2020/03/13 05:40:20 yamaguchi Exp $    */
+/*     $NetBSD: if_ixl.c,v 1.64 2020/03/13 05:49:52 yamaguchi Exp $    */
 
 /*
  * Copyright (c) 2013-2015, Intel Corporation
@@ -74,7 +74,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_ixl.c,v 1.63 2020/03/13 05:40:20 yamaguchi Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_ixl.c,v 1.64 2020/03/13 05:49:52 yamaguchi Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_net_mpsafe.h"
@@ -137,6 +137,8 @@
 #define I40E_ITR_INDEX_TX              0x1
 #define I40E_ITR_INDEX_OTHER           0x2
 #define I40E_ITR_INDEX_NONE            0x3
+#define IXL_ITR_RX                     0x7a /* 4K intrs/sec */
+#define IXL_ITR_TX                     0x7a /* 4K intrs/sec */
 
 #define I40E_INTR_NOTX_QUEUE           0
 #define I40E_INTR_NOTX_INTR            0
@@ -704,6 +706,8 @@
        unsigned int             sc_nqueue_pairs_max;
        unsigned int             sc_nqueue_pairs_device;
        struct ixl_queue_pair   *sc_qps;
+       uint32_t                 sc_itr_rx;
+       uint32_t                 sc_itr_tx;
 
        struct evcnt             sc_event_atq;
        struct evcnt             sc_event_link;
@@ -1453,6 +1457,8 @@
 
        if (pmf_device_register(self, NULL, NULL) != true)
                aprint_debug_dev(self, "couldn't establish power handler\n");
+       sc->sc_itr_rx = IXL_ITR_RX;
+       sc->sc_itr_tx = IXL_ITR_TX;
        sc->sc_attached = true;
        return;
 
@@ -5914,13 +5920,18 @@
                     I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT) |
                     I40E_QINT_TQCTL_CAUSE_ENA_MASK);
 
-               if (sc->sc_intrtype == PCI_INTR_TYPE_MSIX)
+               if (sc->sc_intrtype == PCI_INTR_TYPE_MSIX) {
+                       ixl_wr(sc, I40E_PFINT_ITRN(I40E_ITR_INDEX_RX, i),
+                           sc->sc_itr_rx);
+                       ixl_wr(sc, I40E_PFINT_ITRN(I40E_ITR_INDEX_TX, i),
+                           sc->sc_itr_tx);
                        vector++;
+               }
        }
        ixl_flush(sc);
 
-       ixl_wr(sc, I40E_PFINT_ITR0(I40E_ITR_INDEX_RX), 0x7a);
-       ixl_wr(sc, I40E_PFINT_ITR0(I40E_ITR_INDEX_TX), 0x7a);
+       ixl_wr(sc, I40E_PFINT_ITR0(I40E_ITR_INDEX_RX), sc->sc_itr_rx);
+       ixl_wr(sc, I40E_PFINT_ITR0(I40E_ITR_INDEX_TX), sc->sc_itr_tx);
        ixl_flush(sc);
 }