Wire-up flush_dcache, readq- and writeq-like gic-v3-its assessors, so
GICv3 ITS gets all it needs to be built and run.
Signed-off-by: Vladimir Murzin <vladimir.mur...@arm.com>
---
arch/arm/include/asm/arch_gicv3.h | 59 ++++++++++++++++++++++++++++++++-----
1 file changed, 52 insertions(+), 7 deletions(-)
diff --git a/arch/arm/include/asm/arch_gicv3.h
b/arch/arm/include/asm/arch_gicv3.h
index a808829..35a1e35 100644
--- a/arch/arm/include/asm/arch_gicv3.h
+++ b/arch/arm/include/asm/arch_gicv3.h
@@ -22,6 +22,7 @@
#include <linux/io.h>
#include <asm/barrier.h>
+#include <asm/cacheflush.h>
#include <asm/cp15.h>
#define ICC_EOIR1 __ACCESS_CP15(c12, 0, c12, 1)
@@ -230,19 +231,14 @@ static inline void gic_write_bpr1(u32 val)
* AArch32, since the syndrome register doesn't provide any information for
* them.
* Consequently, the following IO helpers use 32bit accesses.
- *
- * There are only two registers that need 64bit accesses in this driver:
- * - GICD_IROUTERn, contain the affinity values associated to each interrupt.
- * The upper-word (aff3) will always be 0, so there is no need for a lock.
- * - GICR_TYPER is an ID register and doesn't need atomicity.
*/
-static inline void gic_write_irouter(u64 val, volatile void __iomem *addr)
+static inline void __gic_writeq_nonatomic(u64 val, volatile void __iomem *addr)
{
writel_relaxed((u32)val, addr);
writel_relaxed((u32)(val >> 32), addr + 4);
}
-static inline u64 gic_read_typer(const volatile void __iomem *addr)
+static inline u64 __gic_readq_nonatomic(const volatile void __iomem *addr)
{
u64 val;
@@ -251,5 +247,54 @@ static inline u64 gic_read_typer(const volatile void
__iomem *addr)
return val;
}
+#define gic_flush_dcache_to_poc(a,l) __cpuc_flush_dcache_area((a), (l))
+
+/*
+ * GICD_IROUTERn, contain the affinity values associated to each interrupt.
+ * The upper-word (aff3) will always be 0, so there is no need for a lock.
+ */
+#define gic_write_irouter(v, c) __gic_writeq_nonatomic(v, c)
+
+/*
+ * GICR_TYPER is an ID register and doesn't need atomicity.
+ */
+#define gic_read_typer(c) __gic_readq_nonatomic(c)
+
+/*
+ * GITS_BASER - hi and lo bits may be accessed independently.
+ */
+#define gits_read_baser(c) __gic_readq_nonatomic(c)
+#define gits_write_baser(v, c) __gic_writeq_nonatomic(v, c)
+
+/*
+ * GITS_TYPER is an ID register and doesn't need atomicity.
+ */
+#define gits_read_typer(c) __gic_readq_nonatomic(c)
+
+/*
+ * GICR_PENDBASER and GICR_PROPBASE are changed with LPIs disabled, so they
+ * won't be being used during any updates and can be changed non-atomically
+ */
+#define gicr_read_propbaser(c) __gic_readq_nonatomic(c)
+#define gicr_write_propbaser(v, c) __gic_writeq_nonatomic(v, c)
+#define gicr_read_pendbaser(c) __gic_readq_nonatomic(c)
+#define gicr_write_pendbaser(v, c) __gic_writeq_nonatomic(v, c)
+
+/*
+ * GITS_TYPER is an ID register and doesn't need atomicity.
+ */
+#define gits_read_typer(c) __gic_readq_nonatomic(c)
+
+/*
+ * GITS_CBASER - hi and lo bits may be accessed independently.
+ */
+#define gits_read_cbaser(c) __gic_readq_nonatomic(c)
+#define gits_write_cbaser(v, c) __gic_writeq_nonatomic(v, c)
+
+/*
+ * GITS_CWRITER - hi and lo bits may be accessed independently.
+ */
+#define gits_write_cwriter(v, c) __gic_writeq_nonatomic(v, c)
+
#endif /* !__ASSEMBLY__ */
#endif /* !__ASM_ARCH_GICV3_H */
--
1.7.9.5
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