Commit 910cc1ac authored by Sudeep Holla's avatar Sudeep Holla
Browse files

firmware: arm_ffa: Add support for passing UUID in FFA_MSG_SEND2 



FF-A v1.2 introduces UUID field in partition message header used in
FFA_MSG_SEND2 to enable partitions/endpoints exposing multiple UUIDs.

Add the support for passing UUID in FFA_MSG_SEND2.

Tested-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Message-Id: <20250217-ffa_updates-v3-10-bd1d9de615e7@arm.com>
Signed-off-by: default avatarSudeep Holla <sudeep.holla@arm.com>
parent 84968e32

drivers/firmware/arm_ffa/driver.c

+4 −3
Original line number Diff line number Diff line
@@ -484,9 +484,9 @@ static int ffa_msg_send_direct_req(u16 src_id, u16 dst_id, bool mode_32bit, 
	return -EINVAL;

}



static int ffa_msg_send2(u16 src_id, u16 dst_id, void *buf, size_t sz)

static int ffa_msg_send2(struct ffa_device *dev, u16 src_id, void *buf, size_t sz)

{

	u32 src_dst_ids = PACK_TARGET_INFO(src_id, dst_id);

	u32 src_dst_ids = PACK_TARGET_INFO(src_id, dev->vm_id);

	struct ffa_indirect_msg_hdr *msg;

	ffa_value_t ret;

	int retval = 0;
@@ -502,6 +502,7 @@ static int ffa_msg_send2(u16 src_id, u16 dst_id, void *buf, size_t sz) 
	msg->offset = sizeof(*msg);

	msg->send_recv_id = src_dst_ids;

	msg->size = sz;

	uuid_copy(&msg->uuid, &dev->uuid);

	memcpy((u8 *)msg + msg->offset, buf, sz);



	/* flags = 0, sender VMID = 0 works for both physical/virtual NS */
@@ -1054,7 +1055,7 @@ static int ffa_sync_send_receive(struct ffa_device *dev, 


static int ffa_indirect_msg_send(struct ffa_device *dev, void *buf, size_t sz)

{

	return ffa_msg_send2(drv_info->vm_id, dev->vm_id, buf, sz);

	return ffa_msg_send2(dev, drv_info->vm_id, buf, sz);

}



static int ffa_sync_send_receive2(struct ffa_device *dev,

include/linux/arm_ffa.h

+1 −0
Original line number Diff line number Diff line
@@ -282,6 +282,7 @@ struct ffa_indirect_msg_hdr { 
	u32 offset;

	u32 send_recv_id;

	u32 size;

	uuid_t uuid;

};



/* For use with FFA_MSG_SEND_DIRECT_{REQ,RESP}2 which pass data via registers */