[src/trunk]: src/sys/arch/arm/cortex When lpiconf flushing is required, make ...

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

details:   https://anonhg.NetBSD.org/src/rev/ad9872c75773
branches:  trunk
changeset: 958070:ad9872c75773
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Tue Dec 22 10:46:51 2020 +0000

description:
When lpiconf flushing is required, make sure to flush to PoC and not PoU.
Spotted by nick.

diffstat:

 sys/arch/arm/cortex/gicv3.c |  17 ++++++++++++-----
 1 files changed, 12 insertions(+), 5 deletions(-)

diffs (59 lines):

diff -r 2a9d52ac5cd8 -r ad9872c75773 sys/arch/arm/cortex/gicv3.c
--- a/sys/arch/arm/cortex/gicv3.c       Tue Dec 22 08:57:23 2020 +0000
+++ b/sys/arch/arm/cortex/gicv3.c       Tue Dec 22 10:46:51 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: gicv3.c,v 1.37 2020/12/11 21:22:36 jmcneill Exp $ */
+/* $NetBSD: gicv3.c,v 1.38 2020/12/22 10:46:51 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2018 Jared McNeill <jmcneill%invisible.ca@localhost>
@@ -31,7 +31,7 @@
 #define        _INTR_PRIVATE
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gicv3.c,v 1.37 2020/12/11 21:22:36 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gicv3.c,v 1.38 2020/12/22 10:46:51 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -514,6 +514,13 @@
 };
 
 static void
+gicv3_dcache_wb_range(vaddr_t va, vsize_t len)
+{
+       cpu_dcache_wb_range(va, len);
+       dsb(sy);
+}
+
+static void
 gicv3_lpi_unblock_irqs(struct pic_softc *pic, size_t irqbase, uint32_t mask)
 {
        struct gicv3_softc * const sc = LPITOSOFTC(pic);
@@ -522,7 +529,7 @@
        while ((bit = ffs(mask)) != 0) {
                sc->sc_lpiconf.base[irqbase + bit - 1] |= GIC_LPICONF_Enable;
                if (sc->sc_lpiconf_flush)
-                       cpu_dcache_wb_range((vaddr_t)&sc->sc_lpiconf.base[irqbase + bit - 1], 1);
+                       gicv3_dcache_wb_range((vaddr_t)&sc->sc_lpiconf.base[irqbase + bit - 1], 1);
                mask &= ~__BIT(bit - 1);
        }
 
@@ -539,7 +546,7 @@
        while ((bit = ffs(mask)) != 0) {
                sc->sc_lpiconf.base[irqbase + bit - 1] &= ~GIC_LPICONF_Enable;
                if (sc->sc_lpiconf_flush)
-                       cpu_dcache_wb_range((vaddr_t)&sc->sc_lpiconf.base[irqbase + bit - 1], 1);
+                       gicv3_dcache_wb_range((vaddr_t)&sc->sc_lpiconf.base[irqbase + bit - 1], 1);
                mask &= ~__BIT(bit - 1);
        }
 
@@ -555,7 +562,7 @@
        sc->sc_lpiconf.base[is->is_irq] = IPL_TO_PRIORITY(sc, is->is_ipl) | GIC_LPICONF_Res1;
 
        if (sc->sc_lpiconf_flush)
-               cpu_dcache_wb_range((vaddr_t)&sc->sc_lpiconf.base[is->is_irq], 1);
+               gicv3_dcache_wb_range((vaddr_t)&sc->sc_lpiconf.base[is->is_irq], 1);
        else
                dsb(ishst);
 }