[src/trunk]: src/sys/dev/pci Add MSI-X support.

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

details:   https://anonhg.NetBSD.org/src/rev/b8cb24aaded4
branches:  trunk
changeset: 445523:b8cb24aaded4
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Wed Oct 31 16:11:29 2018 +0000

description:
Add MSI-X support.

diffstat:

 sys/dev/pci/xhci_pci.c |  13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diffs (41 lines):

diff -r 3095c81dff91 -r b8cb24aaded4 sys/dev/pci/xhci_pci.c
--- a/sys/dev/pci/xhci_pci.c    Wed Oct 31 15:43:19 2018 +0000
+++ b/sys/dev/pci/xhci_pci.c    Wed Oct 31 16:11:29 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: xhci_pci.c,v 1.14 2018/09/18 05:24:10 mrg Exp $        */
+/*     $NetBSD: xhci_pci.c,v 1.15 2018/10/31 16:11:29 jmcneill Exp $   */
 /*     OpenBSD: xhci_pci.c,v 1.4 2014/07/12 17:38:51 yuo Exp   */
 
 /*
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: xhci_pci.c,v 1.14 2018/09/18 05:24:10 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: xhci_pci.c,v 1.15 2018/10/31 16:11:29 jmcneill Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_xhci_pci.h"
@@ -186,6 +186,9 @@
 #ifndef XHCI_DISABLE_MSI
                [PCI_INTR_TYPE_MSI] = 1,
 #endif
+#ifndef XHCI_DISABLE_MSIX
+               [PCI_INTR_TYPE_MSIX] = 1,
+#endif
        };
 
 alloc_retry:
@@ -203,6 +206,12 @@
                pci_intr_release(pc, psc->sc_pihp, 1);
                psc->sc_ih = NULL;
                switch (intr_type) {
+               case PCI_INTR_TYPE_MSIX:
+                       /* The next try is for MSI: Disable MSIX */
+                       counts[PCI_INTR_TYPE_MSIX] = 0;
+                       counts[PCI_INTR_TYPE_MSI] = 1;
+                       counts[PCI_INTR_TYPE_INTX] = 1;
+                       goto alloc_retry;
                case PCI_INTR_TYPE_MSI:
                        /* The next try is for INTx: Disable MSI */
                        counts[PCI_INTR_TYPE_MSI] = 0;