[kvm-unit-tests PATCH v3 07/14] arm/arm64: gicv3: Enable/Disable LPIs at re-distributor level

[Eric Auger]

This helper function controls the signaling of LPIs at
redistributor level.

Signed-off-by: Eric Auger <address@hidden>

---

v2 -> v3:
- move the helper in lib/arm/gic-v3.c
- rename the function with gicv3_lpi_ prefix
- s/report_abort/assert
---
 lib/arm/asm/gic-v3.h |  1 +
 lib/arm/gic-v3.c     | 17 +++++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/lib/arm/asm/gic-v3.h b/lib/arm/asm/gic-v3.h
index ec2a6f0..734c0c0 100644
--- a/lib/arm/asm/gic-v3.h
+++ b/lib/arm/asm/gic-v3.h
@@ -96,6 +96,7 @@ extern void gicv3_lpi_set_config(int n, u8 val);
 extern u8 gicv3_lpi_get_config(int n);
 extern void gicv3_lpi_set_pending_table_bit(int rdist, int n, bool set);
 extern void gicv3_lpi_alloc_tables(void);
+extern void gicv3_lpi_rdist_ctrl(u32 redist, bool set);
 
 static inline void gicv3_do_wait_for_rwp(void *base)
 {
diff --git a/lib/arm/gic-v3.c b/lib/arm/gic-v3.c
index c33f883..7865d01 100644
--- a/lib/arm/gic-v3.c
+++ b/lib/arm/gic-v3.c
@@ -210,4 +210,21 @@ void gicv3_lpi_set_pending_table_bit(int rdist, int n, 
bool set)
                byte &= ~mask;
        *ptr = byte;
 }
+
+void gicv3_lpi_rdist_ctrl(u32 redist, bool set)
+{
+       void *ptr;
+       u64 val;
+
+       assert(redist < nr_cpus);
+
+       ptr = gicv3_data.redist_base[redist];
+       val = readl(ptr + GICR_CTLR);
+       if (set)
+               val |= GICR_CTLR_ENABLE_LPIS;
+       else
+               val &= ~GICR_CTLR_ENABLE_LPIS;
+       writel(val,  ptr + GICR_CTLR);
+}
 #endif /* __aarch64__ */
+
-- 
2.20.1