user/sven/linux.git/drivers/firmware/arm_ffa, branch v6.2.7

firmware: arm_ffa: Move constants to header file

2022-12-01T15:51:31Z

FF-A function IDs and error codes will be needed in the hypervisor too, so move to them to the header file where they can be shared. Rename the version constants with an "FFA_" prefix so that they are less likely to clash with other code in the tree. Co-developed-by: Andrew Walbran Signed-off-by: Andrew Walbran Signed-off-by: Quentin Perret Reviewed-by: Sudeep Holla Link: https://lore.kernel.org/r/20221116170335.2341003-2-qperret@google.com Signed-off-by: Will Deacon

firmware: arm_ffa: Split up ffa_ops into info, message and memory operations

2022-09-08T10:34:04Z

In preparation to make memory operations accessible for a non ffa_driver/device, it is better to split the ffa_ops into different categories of operations: info, message and memory. The info and memory are ffa_device independent and can be used without any associated ffa_device from a non ffa_driver. However, we don't export these info and memory APIs yet without the user. The first users of these APIs can export them. Link: https://lore.kernel.org/r/20220907145240.1683088-11-sudeep.holla@arm.com Reviewed-by: Jens Wiklander Signed-off-by: Sudeep Holla

firmware: arm_ffa: Set up 32bit execution mode flag using partiion property

2022-09-08T10:33:15Z

FF-A v1.1 adds a flag in the partition properties to indicate if the partition runs in the AArch32 or AArch64 execution state. Use the same to set-up the 32-bit execution flag mode in the ffa_dev automatically if the detected firmware version is above v1.0 and ignore any requests to do the same from the ffa_driver. Link: https://lore.kernel.org/r/20220907145240.1683088-10-sudeep.holla@arm.com Signed-off-by: Sudeep Holla

firmware: arm_ffa: Add v1.1 get_partition_info support

2022-09-08T10:30:35Z

FF-A v1.1 adds support to discovery the UUIDs of the partitions that was missing in v1.0 and which the driver workarounds by using UUIDs supplied by the ffa_drivers. Add the v1.1 get_partition_info support and disable the workaround if the detected FF-A version is greater than v1.0. Link: https://lore.kernel.org/r/20220907145240.1683088-9-sudeep.holla@arm.com Reviewed-by: Jens Wiklander Signed-off-by: Sudeep Holla

firmware: arm_ffa: Rename ffa_dev_ops as ffa_ops

2022-09-08T10:30:34Z

Except the message APIs, all other APIs are ffa_device independent and can be used without any associated ffa_device from a non ffa_driver. In order to reflect the same, just rename ffa_dev_ops as ffa_ops to avoid any confusion or to keep it simple. Link: https://lore.kernel.org/r/20220907145240.1683088-8-sudeep.holla@arm.com Suggested-by: Sumit Garg Reviewed-by: Sumit Garg Reviewed-by: Jens Wiklander Signed-off-by: Sudeep Holla

firmware: arm_ffa: Make memory apis ffa_device independent

2022-09-08T10:30:34Z

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 Signed-off-by: Sudeep Holla

firmware: arm_ffa: Use FFA_FEATURES to detect if native versions are supported

2022-09-08T10:30:34Z

Currently, the ffa_dev->mode_32bit is use to detect if the native 64-bit or 32-bit versions of FF-A ABI needs to be used. However for the FF-A memory ABIs, it is not dependent on the ffa_device(i.e. the partition) itself, but the partition manager(SPM). So, the FFA_FEATURES can be use to detect if the native 64bit ABIs are supported or not and appropriate calls can be made based on that. Use FFA_FEATURES to detect if native versions of MEM_LEND or MEM_SHARE are implemented and make of the same to use native memory ABIs later on. Link: https://lore.kernel.org/r/20220907145240.1683088-6-sudeep.holla@arm.com Reviewed-by: Jens Wiklander Signed-off-by: Sudeep Holla

firmware: arm_ffa: Add support for querying FF-A features

2022-09-08T10:30:34Z

Add support for FFA_FEATURES to discover properties supported at the FF-A interface. This interface can be used to query: - If an FF-A interface is implemented by the component at the higher EL, - If an implemented FF-A interface also implements any optional features described in its interface definition, and - Any implementation details exported by an implemented FF-A interface as described in its interface definition. Link: https://lore.kernel.org/r/20220907145240.1683088-5-sudeep.holla@arm.com Reviewed-by: Jens Wiklander Signed-off-by: Sudeep Holla

firmware: arm_ffa: Remove ffa_dev_ops_get()

2022-09-08T10:30:34Z

The only user of this exported ffa_dev_ops_get() was OPTEE driver which now uses ffa_dev->ops directly, there are no other users for this. Also, since any ffa driver can use ffa_dev->ops directly, there will be no need for ffa_dev_ops_get(), so just remove ffa_dev_ops_get(). Link: https://lore.kernel.org/r/20220907145240.1683088-4-sudeep.holla@arm.com Reviewed-by: Jens Wiklander Signed-off-by: Sudeep Holla

firmware: arm_ffa: Add pointer to the ffa_dev_ops in struct ffa_dev

2022-09-08T10:30:34Z

Currently ffa_dev_ops_get() is the way to fetch the ffa_dev_ops pointer. It checks if the ffa_dev structure pointer is valid before returning the ffa_dev_ops pointer. Instead, the pointer can be made part of the ffa_dev structure and since the core driver is incharge of creating ffa_device for each identified partition, there is no need to check for the validity explicitly if the pointer is embedded in the structure. Add the pointer to the ffa_dev_ops in the ffa_dev structure itself and initialise the same as part of creation of the device. Link: https://lore.kernel.org/r/20220907145240.1683088-2-sudeep.holla@arm.com Reviewed-by: Jens Wiklander Signed-off-by: Sudeep Holla