[PATCH 6/9] firmware: arm_ffa: Make memory apis ffa_device independent

Sudeep Holla
2022-08-30T10:12:33Z

There is a requirement to make memory APIs independent of the ffa_device.
One of the use-case is to have a common memory driver that manages the
memory for all the ffa_devices. That commom memory driver won't be a
ffa_driver or won't have any ffa_device associated with it. So having
these memory APIs accessible without a ffa_device is needed and should
be possible as most of these are handled by the partition manager(SPM
or hypervisor).

Drop the ffa_device argument to the memory APIs and make them ffa_device
independent.

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
---
drivers/firmware/arm_ffa/driver.c | 6 ++----
drivers/tee/optee/ffa_abi.c | 2 +-
include/linux/arm_ffa.h | 6 ++----
3 files changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c
index 5f02b670e964..5c8484b05c50 100644
--- a/drivers/firmware/arm_ffa/driver.c
+++ b/drivers/firmware/arm_ffa/driver.c
@@ -640,8 +640,7 @@ static int ffa_sync_send_receive(struct ffa_device *dev,
dev->mode_32bit, data);
}

-static int
-ffa_memory_share(struct ffa_device *dev, struct ffa_mem_ops_args *args)
+static int ffa_memory_share(struct ffa_mem_ops_args *args)
{
if (drv_info->mem_ops_native)
return ffa_memory_ops(FFA_FN_NATIVE(MEM_SHARE), args);
@@ -649,8 +648,7 @@ ffa_memory_share(struct ffa_device *dev, struct ffa_mem_ops_args *args)
return ffa_memory_ops(FFA_MEM_SHARE, args);
}

-static int
-ffa_memory_lend(struct ffa_device *dev, struct ffa_mem_ops_args *args)
+static int ffa_memory_lend(struct ffa_mem_ops_args *args)
{
/* Note that upon a successful MEM_LEND request the caller
* must ensure that the memory region specified is not accessed
diff --git a/drivers/tee/optee/ffa_abi.c b/drivers/tee/optee/ffa_abi.c
index 4c3b5d0008dd..7ec0a2f9a63b 100644
--- a/drivers/tee/optee/ffa_abi.c
+++ b/drivers/tee/optee/ffa_abi.c
@@ -294,7 +294,7 @@ static int optee_ffa_shm_register(struct tee_context *ctx, struct tee_shm *shm,
if (rc)
return rc;
args.sg = sgt.sgl;
- rc = ffa_ops->memory_share(ffa_dev, &args);
+ rc = ffa_ops->memory_share(&args);
sg_free_table(&sgt);
if (rc)
return rc;
diff --git a/include/linux/arm_ffa.h b/include/linux/arm_ffa.h
index 556f50f27fb1..eafab07c9f58 100644
--- a/include/linux/arm_ffa.h
+++ b/include/linux/arm_ffa.h
@@ -262,10 +262,8 @@ struct ffa_dev_ops {
int (*sync_send_receive)(struct ffa_device *dev,
struct ffa_send_direct_data *data);
int (*memory_reclaim)(u64 g_handle, u32 flags);
- int (*memory_share)(struct ffa_device *dev,
- struct ffa_mem_ops_args *args);
- int (*memory_lend)(struct ffa_device *dev,
- struct ffa_mem_ops_args *args);
+ int (*memory_share)(struct ffa_mem_ops_args *args);
+ int (*memory_lend)(struct ffa_mem_ops_args *args);
};

#endif /* _LINUX_ARM_FFA_H */
--
2.37.2