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firmware: arm_ffa: Add support for passing UUID in FFA_MSG_SEND2

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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: Viresh Kumar <viresh.kumar@linaro.org>
Message-Id: <20250217-ffa_updates-v3-10-bd1d9de615e7@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Sudeep Holla 2025-02-17 15:38:51 +00:00
parent 84968e32d3
commit 910cc1acc9
2 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/firmware/arm_ffa/driver.c
View File

@ -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,

1
include/linux/arm_ffa.h
View File

@ -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 */