Allwinner A523 GIC600 integration does not support the
sharability feature. So assigned Erratum ID #sunxi001 for this
issue.
That the 0x0201643b ID is not Allwinner specific and thus
there is an extra of_machine_is_compatible() check.
Note, because more than one soc may have this problem, the 'sunxi'
name is used instead of a fixed soc name like A523.
Signed-off-by: harry.yu185 <harry.yu185 at gmail.com>
---
Documentation/arch/arm64/silicon-errata.rst | 2 ++
arch/arm64/Kconfig | 10 ++++++++++
drivers/irqchip/irq-gic-v3-its.c | 21 +++++++++++++++++++++
3 files changed, 33 insertions(+)
diff --git a/Documentation/arch/arm64/silicon-errata.rst b/Documentation/arch/arm64/silicon-errata.rst
index eb8af8032c31..351dd6094a6c 100644
--- a/Documentation/arch/arm64/silicon-errata.rst
+++ b/Documentation/arch/arm64/silicon-errata.rst
@@ -242,6 +242,8 @@ stable kernels.
+----------------+-----------------+-----------------+-----------------------------+
| Rockchip | RK3588 | #3588001 | ROCKCHIP_ERRATUM_3588001 |
+----------------+-----------------+-----------------+-----------------------------+
+| Allwinner | SUN55IW3 | #sunxi001 | ALLWINNER_ERRATUM_SUNXI001 |
++----------------+-----------------+-----------------+-----------------------------+
+----------------+-----------------+-----------------+-----------------------------+
| Fujitsu | A64FX | E#010001 | FUJITSU_ERRATUM_010001 |
+----------------+-----------------+-----------------+-----------------------------+
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 5d91259ee7b5..5a71227d119a 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1279,6 +1279,16 @@ config ROCKCHIP_ERRATUM_3588001
If unsure, say Y.
+config ALLWINNER_ERRATUM_SUNXI001
+ bool "Allwinner sunxi001: GIC600 can not support shareability attributes"
+ default y
+ help
+ The Allwinner GIC600 SoC integration does not support ACE/ACE-lite.
+ This means, that its sharability feature may not be used, even though it
+ is supported by the IP itself.
+
+ If unsure, say Y.
+
config SOCIONEXT_SYNQUACER_PREITS
bool "Socionext Synquacer: Workaround for GICv3 pre-ITS"
default y
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 40ebf1726393..d93348947353 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -4775,6 +4775,19 @@ static bool __maybe_unused its_enable_rk3588001(void *data)
return true;
}
+static bool __maybe_unused its_enable_sunxi001(void *data)
+{
+ struct its_node *its = data;
+
+ if (!of_machine_is_compatible("arm,sun55iw3p1"))
+ return false;
+
+ its->flags |= ITS_FLAGS_FORCE_NON_SHAREABLE;
+ gic_rdists->flags |= RDIST_FLAGS_FORCE_NON_SHAREABLE;
+
+ return true;
+}
+
static bool its_set_non_coherent(void *data)
{
struct its_node *its = data;
@@ -4836,6 +4849,14 @@ static const struct gic_quirk its_quirks[] = {
.mask = 0xffffffff,
.init = its_enable_rk3588001,
},
+#endif
+#ifdef CONFIG_ALLWINNER_ERRATUM_SUNXI001
+ {
+ .desc = "ITS: Allwinner erratum sunxi001",
+ .iidr = 0x0201643b,
+ .mask = 0xffffffff,
+ .init = its_enable_sunxi001,
+ },
#endif
{
.desc = "ITS: non-coherent attribute",
--
2.37.2