From:   Eric Auger <eric.auger@redhat.com>
To:     eric.auger.pro@gmail.com, eric.auger@redhat.com, maz@kernel.org,
        kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
        qemu-devel@nongnu.org, qemu-arm@nongnu.org
Cc:     drjones@redhat.com, andre.przywara@arm.com,
        peter.maydell@linaro.org, yuzenghui@huawei.com,
        alexandru.elisei@arm.com, thuth@redhat.com
Subject: [kvm-unit-tests PATCH v3 07/14] arm/arm64: gicv3: Enable/Disable LPIs at re-distributor level
Date:   Tue, 28 Jan 2020 11:34:52 +0100
Message-Id: <20200128103459.19413-8-eric.auger@redhat.com>
In-Reply-To: <20200128103459.19413-1-eric.auger@redhat.com>
References: <20200128103459.19413-1-eric.auger@redhat.com>
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This helper function controls the signaling of LPIs at
redistributor level.

Signed-off-by: Eric Auger <eric.auger@redhat.com>

---

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);
=20
 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 &=3D ~mask;
 	*ptr =3D byte;
 }
+
+void gicv3_lpi_rdist_ctrl(u32 redist, bool set)
+{
+	void *ptr;
+	u64 val;
+
+	assert(redist < nr_cpus);
+
+	ptr =3D gicv3_data.redist_base[redist];
+	val =3D readl(ptr + GICR_CTLR);
+	if (set)
+		val |=3D GICR_CTLR_ENABLE_LPIS;
+	else
+		val &=3D ~GICR_CTLR_ENABLE_LPIS;
+	writel(val,  ptr + GICR_CTLR);
+}
 #endif /* __aarch64__ */
+
--=20
2.20.1