[src/trunk]: src/sys/arch/arm/cortex Preserve ST Lower and Upper fields when ...

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

details:   https://anonhg.NetBSD.org/src/rev/1b6391c2e63e
branches:  trunk
changeset: 947122:1b6391c2e63e
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Fri Dec 11 21:40:50 2020 +0000

description:
Preserve ST Lower and Upper fields when clearing Mask bit in the MSI-X
vector control register.

diffstat:

 sys/arch/arm/cortex/gic_v2m.c   |  9 ++++++---
 sys/arch/arm/cortex/gicv3_its.c |  9 ++++++---
 2 files changed, 12 insertions(+), 6 deletions(-)

diffs (74 lines):

diff -r 78cd4dccd2f0 -r 1b6391c2e63e sys/arch/arm/cortex/gic_v2m.c
--- a/sys/arch/arm/cortex/gic_v2m.c     Fri Dec 11 21:22:36 2020 +0000
+++ b/sys/arch/arm/cortex/gic_v2m.c     Fri Dec 11 21:40:50 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: gic_v2m.c,v 1.9 2020/05/07 16:20:40 jmcneill Exp $ */
+/* $NetBSD: gic_v2m.c,v 1.10 2020/12/11 21:40:50 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -32,7 +32,7 @@
 #define _INTR_PRIVATE
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gic_v2m.c,v 1.9 2020/05/07 16:20:40 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gic_v2m.c,v 1.10 2020/12/11 21:40:50 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/kmem.h>
@@ -183,6 +183,7 @@
        pci_chipset_tag_t pc = pa->pa_pc;
        pcitag_t tag = pa->pa_tag;
        pcireg_t ctl;
+       uint32_t val;
        int off;
 
        if (!pci_get_capability(pc, tag, PCI_CAP_MSIX, &off, NULL))
@@ -198,7 +199,9 @@
        bus_space_write_4(bst, bsh, entry_base + PCI_MSIX_TABLE_ENTRY_ADDR_LO, (uint32_t)addr);
        bus_space_write_4(bst, bsh, entry_base + PCI_MSIX_TABLE_ENTRY_ADDR_HI, (uint32_t)(addr >> 32));
        bus_space_write_4(bst, bsh, entry_base + PCI_MSIX_TABLE_ENTRY_DATA, data);
-       bus_space_write_4(bst, bsh, entry_base + PCI_MSIX_TABLE_ENTRY_VECTCTL, 0);
+       val = bus_space_read_4(bst, bsh, entry_base + PCI_MSIX_TABLE_ENTRY_VECTCTL);
+       val &= ~PCI_MSIX_VECTCTL_MASK;
+       bus_space_write_4(bst, bsh, entry_base + PCI_MSIX_TABLE_ENTRY_VECTCTL, val);
 
        ctl = pci_conf_read(pc, tag, off + PCI_MSIX_CTL);
        ctl |= PCI_MSIX_CTL_ENABLE;
diff -r 78cd4dccd2f0 -r 1b6391c2e63e sys/arch/arm/cortex/gicv3_its.c
--- a/sys/arch/arm/cortex/gicv3_its.c   Fri Dec 11 21:22:36 2020 +0000
+++ b/sys/arch/arm/cortex/gicv3_its.c   Fri Dec 11 21:40:50 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: gicv3_its.c,v 1.28 2020/09/24 08:50:09 ryo Exp $ */
+/* $NetBSD: gicv3_its.c,v 1.29 2020/12/11 21:40:50 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -32,7 +32,7 @@
 #define _INTR_PRIVATE
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gicv3_its.c,v 1.28 2020/09/24 08:50:09 ryo Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gicv3_its.c,v 1.29 2020/12/11 21:40:50 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/kmem.h>
@@ -429,6 +429,7 @@
        pci_chipset_tag_t pc = pa->pa_pc;
        pcitag_t tag = pa->pa_tag;
        pcireg_t ctl;
+       uint32_t val;
        int off;
 
        if (!pci_get_capability(pc, tag, PCI_CAP_MSIX, &off, NULL))
@@ -439,7 +440,9 @@
        bus_space_write_4(bst, bsh, entry_base + PCI_MSIX_TABLE_ENTRY_ADDR_LO, (uint32_t)addr);
        bus_space_write_4(bst, bsh, entry_base + PCI_MSIX_TABLE_ENTRY_ADDR_HI, (uint32_t)(addr >> 32));
        bus_space_write_4(bst, bsh, entry_base + PCI_MSIX_TABLE_ENTRY_DATA, lpi - its->its_pic->pic_irqbase);
-       bus_space_write_4(bst, bsh, entry_base + PCI_MSIX_TABLE_ENTRY_VECTCTL, 0);
+       val = bus_space_read_4(bst, bsh, entry_base + PCI_MSIX_TABLE_ENTRY_VECTCTL);
+       val &= ~PCI_MSIX_VECTCTL_MASK;                                          
+       bus_space_write_4(bst, bsh, entry_base + PCI_MSIX_TABLE_ENTRY_VECTCTL, val);
 
        ctl = pci_conf_read(pc, tag, off + PCI_MSIX_CTL);
        ctl |= PCI_MSIX_CTL_ENABLE;