From: Sudeep Holla <sudeep.holla@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: Marc Bonnici <marc.bonnici@arm.com>,
Olivier Deprez <Olivier.Deprez@arm.com>,
Lorenzo Pieralisi <lpieralisi@kernel.org>,
Bertrand Marquis <Bertrand.Marquis@arm.com>,
Jens Wiklander <jens.wiklander@linaro.org>,
Sudeep Holla <sudeep.holla@arm.com>
Subject: [PATCH 2/4] firmware: arm_ffa: Check if receiving direct requests are supported before sending
Date: Mon, 15 Apr 2024 17:05:23 +0100 [thread overview]
Message-ID: <20240415-ffa_msg2_support-v1-2-a28c964b1b3f@arm.com> (raw)
In-Reply-To: <20240415-ffa_msg2_support-v1-0-a28c964b1b3f@arm.com>
Add check to see if the target partition can receive the direct requests
before sending any message to the partition.
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
---
drivers/firmware/arm_ffa/driver.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c
index d258d04c1eda..52379885a403 100644
--- a/drivers/firmware/arm_ffa/driver.c
+++ b/drivers/firmware/arm_ffa/driver.c
@@ -875,9 +875,15 @@ static bool ffa_partition_check_property(struct ffa_device *dev, u32 property)
return partition->properties & property;
}
+#define ffa_partition_supports_direct_recv(dev) \
+ ffa_partition_check_property(dev, FFA_PARTITION_DIRECT_RECV)
+
static int ffa_sync_send_receive(struct ffa_device *dev,
struct ffa_send_direct_data *data)
{
+ if (!ffa_partition_supports_direct_recv(dev))
+ return -EOPNOTSUPP;
+
return ffa_msg_send_direct_req(drv_info->vm_id, dev->vm_id,
dev->mode_32bit, data);
}
--
2.43.2
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next prev parent reply other threads:[~2024-04-15 16:06 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-15 16:05 [PATCH 0/4] firmware: arm_ffa: Support for MSG_SEND2 and minor harderning checks Sudeep Holla
2024-04-15 16:05 ` [PATCH 1/4] firmware: arm_ffa: Stash the partition properties for query purposes Sudeep Holla
2024-04-15 16:05 ` Sudeep Holla [this message]
2024-04-16 7:18 ` [PATCH 2/4] firmware: arm_ffa: Check if receiving direct requests are supported before sending Jens Wiklander
2024-04-15 16:05 ` [PATCH 3/4] firmware: arm_ffa: Check if receiving notifications " Sudeep Holla
2024-04-16 7:31 ` Jens Wiklander
2024-04-15 16:05 ` [PATCH 4/4] firmware: arm_ffa: Add support for FFA_MSG_SEND2 Sudeep Holla
2024-04-16 7:26 ` Bertrand Marquis
2024-04-16 9:47 ` Sudeep Holla
2024-04-16 7:41 ` Jens Wiklander
2024-04-16 8:48 ` Sudeep Holla
2024-04-16 10:53 ` Jens Wiklander
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