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firmware: arm_ffa: Make memory apis ffa_device independent

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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 common 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.

Link: https://lore.kernel.org/r/20220907145240.1683088-7-sudeep.holla@arm.com
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Sudeep Holla 2022-09-07 15:52:36 +01:00
parent e57fba9105
commit 8c3812c8f7
3 changed files with 5 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/firmware/arm_ffa/driver.c
View File

@ -643,8 +643,7 @@ 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);
@ -652,8 +651,7 @@ 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

2
drivers/tee/optee/ffa_abi.c
View File

@ -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;

6
include/linux/arm_ffa.h
View File

@ -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 */