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[PATCH v1 1/3] ARM: GICv3 ITS: issue INVALL command after mapping host events
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Date: Tue, 19 Sep 2023 11:28:53 +0000
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- Cc: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Tue, 19 Sep 2023 11:29:17 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHZ6ux4J+vpvrMLBESLD/bhCu4NsQ==
- Thread-topic: [PATCH v1 1/3] ARM: GICv3 ITS: issue INVALL command after mapping host events
Implement TODO by calling the INVALL command. It is working on real
HW, so there is no sense in not doing this.
Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk@xxxxxxxx>
---
xen/arch/arm/gic-v3-its.c | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/xen/arch/arm/gic-v3-its.c b/xen/arch/arm/gic-v3-its.c
index 3aa4edda10..a9c971a55f 100644
--- a/xen/arch/arm/gic-v3-its.c
+++ b/xen/arch/arm/gic-v3-its.c
@@ -236,6 +236,19 @@ static int its_send_cmd_inv(struct host_its *its,
return its_send_command(its, cmd);
}
+static int its_send_cmd_invall(struct host_its *its,
+ uint32_t collection_id)
+{
+ uint64_t cmd[4];
+
+ cmd[0] = GITS_CMD_INVALL;
+ cmd[1] = 0x00;
+ cmd[2] = collection_id;
+ cmd[3] = 0x00;
+
+ return its_send_command(its, cmd);
+}
+
/* Set up the (1:1) collection mapping for the given host CPU. */
int gicv3_its_setup_collection(unsigned int cpu)
{
@@ -593,7 +606,9 @@ static int gicv3_its_map_host_events(struct host_its *its,
return ret;
}
- /* TODO: Consider using INVALL here. Didn't work on the model, though. */
+ ret = its_send_cmd_invall(its, 0);
+ if ( ret )
+ return ret;
ret = its_send_cmd_sync(its, 0);
if ( ret )
--
2.42.0
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