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authorMarc Zyngier <marc.zyngier@arm.com>2015-03-27 17:15:05 +0300
committerJason Cooper <jason@lakedaemon.net>2015-03-29 22:25:57 +0300
commit241a386c7dbb8b0db400a1f92f2ebe3b10eb661d (patch)
treea450c343af17966b9fb78d54488c0ee838436861 /include
parent4ad3e3634a6cbe916722c7113c5b488d52c7a3dc (diff)
downloadlinux-241a386c7dbb8b0db400a1f92f2ebe3b10eb661d.tar.xz
irqchip: gicv3-its: Use non-cacheable accesses when no shareability
If the ITS or the redistributors report their shareability as zero, then it is important to make sure they will no generate any cacheable traffic, as this is unlikely to produce the expected result. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1427465705-17126-5-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/irqchip/arm-gic-v3.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h
index 826a4bd63d4a..ffbc034c8810 100644
--- a/include/linux/irqchip/arm-gic-v3.h
+++ b/include/linux/irqchip/arm-gic-v3.h
@@ -126,6 +126,7 @@
#define GICR_PROPBASER_WaWb (5U << 7)
#define GICR_PROPBASER_RaWaWt (6U << 7)
#define GICR_PROPBASER_RaWaWb (7U << 7)
+#define GICR_PROPBASER_CACHEABILITY_MASK (7U << 7)
#define GICR_PROPBASER_IDBITS_MASK (0x1f)
#define GICR_PENDBASER_NonShareable (0U << 10)
@@ -140,6 +141,7 @@
#define GICR_PENDBASER_WaWb (5U << 7)
#define GICR_PENDBASER_RaWaWt (6U << 7)
#define GICR_PENDBASER_RaWaWb (7U << 7)
+#define GICR_PENDBASER_CACHEABILITY_MASK (7U << 7)
/*
* Re-Distributor registers, offsets from SGI_base
@@ -195,6 +197,7 @@
#define GITS_CBASER_WaWb (5UL << 59)
#define GITS_CBASER_RaWaWt (6UL << 59)
#define GITS_CBASER_RaWaWb (7UL << 59)
+#define GITS_CBASER_CACHEABILITY_MASK (7UL << 59)
#define GITS_CBASER_NonShareable (0UL << 10)
#define GITS_CBASER_InnerShareable (1UL << 10)
#define GITS_CBASER_OuterShareable (2UL << 10)
@@ -211,6 +214,7 @@
#define GITS_BASER_WaWb (5UL << 59)
#define GITS_BASER_RaWaWt (6UL << 59)
#define GITS_BASER_RaWaWb (7UL << 59)
+#define GITS_BASER_CACHEABILITY_MASK (7UL << 59)
#define GITS_BASER_TYPE_SHIFT (56)
#define GITS_BASER_TYPE(r) (((r) >> GITS_BASER_TYPE_SHIFT) & 7)
#define GITS_BASER_ENTRY_SIZE_SHIFT (48)