Commit 84968e32 authored by Sudeep Holla's avatar Sudeep Holla
Browse files

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



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: default avatarViresh Kumar <viresh.kumar@linaro.org>
Message-Id: <20250217-ffa_updates-v3-9-bd1d9de615e7@arm.com>
Signed-off-by: default avatarSudeep Holla <sudeep.holla@arm.com>
parent 46dcd68a

include/linux/arm_ffa.h

+8 −0
Original line number Diff line number Diff line
@@ -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 */