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firmware: arm_ffa: Helper to check if a partition can receive REQUEST2 messages

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Add a helper that allows FF-A drivers to check if the partition can
receive the direct requests via the FFA_MSG_SEND_DIRECT_REQ2 ABI.

Tested-by: Viresh Kumar <viresh.kumar@linaro.org>
Message-Id: <20250217-ffa_updates-v3-9-bd1d9de615e7@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Sudeep Holla
2025-02-17 15:38:50 +00:00
parent 46dcd68aac
commit 84968e32d3
1 changed files with 8 additions and 0 deletions
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8
include/linux/arm_ffa.h
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@@ -240,6 +240,10 @@ struct ffa_partition_info {
#define FFA_PARTITION_NOTIFICATION_RECV BIT(3)
/* partition runs in the AArch64 execution state. */
#define FFA_PARTITION_AARCH64_EXEC BIT(8)
/* partition supports receipt of direct request2 */
#define FFA_PARTITION_DIRECT_REQ2_RECV BIT(9)
/* partition can send direct request2. */
#define FFA_PARTITION_DIRECT_REQ2_SEND BIT(10)
u32 properties;
uuid_t uuid;
};
@@ -259,6 +263,10 @@ bool ffa_partition_check_property(struct ffa_device *dev, u32 property)
#define ffa_partition_supports_direct_recv(dev) \
ffa_partition_check_property(dev, FFA_PARTITION_DIRECT_RECV)
#define ffa_partition_supports_direct_req2_recv(dev) \
(ffa_partition_check_property(dev, FFA_PARTITION_DIRECT_REQ2_RECV) && \
!dev->mode_32bit)
/* For use with FFA_MSG_SEND_DIRECT_{REQ,RESP} which pass data via registers */
struct ffa_send_direct_data {
unsigned long data0; /* w3/x3 */