Messages in this thread | | | Date | Wed, 31 Aug 2022 13:26:56 +0100 | From | Sudeep Holla <> | Subject | Re: [PATCH 6/9] firmware: arm_ffa: Make memory apis ffa_device independent |
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On Wed, Aug 31, 2022 at 04:16:09PM +0530, Sumit Garg wrote: > Hi Sudeep, > > On Tue, 30 Aug 2022 at 15:39, Sudeep Holla <sudeep.holla@arm.com> wrote: > > > > 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 > > s/commom/common/ > > > 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); > > }; > > > > Since these are included under "struct ffa_dev_ops", wouldn't it be > better to rename the struct (ffa_ops?) as well? >
Makes sense, I just avoided churn. But now I think there is some churn anyways, so I am happy to rename.
-- Regards, Sudeep
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