[GIT,PULL] firmware: arm_ffa: Updates for v6.15

Pull-request

git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git tags/ffa-updates-6.15

Message

Sudeep Holla March 4, 2025, 10:59 a.m. UTC

Hi ARM SoC Team,

Please pull !

Regards,
Sudeep

-->8

The following changes since commit 2014c95afecee3e76ca4a56956a936e23283f05b:

  Linux 6.14-rc1 (2025-02-02 15:39:26 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git tags/ffa-updates-6.15

for you to fetch changes up to cc0aac7ca17e0ea3ca84b552fc79f3e86fd07f53:

  firmware: arm_ffa: Set dma_mask for ffa devices (2025-02-28 11:20:06 +0000)

----------------------------------------------------------------
Arm FF-A updates for v6.15

This update primarily focuses on FF-A framework notification support
along with other improvements, including UUID handling enhancements
and various fixes.

1. FF-A framework notification upport

    - Adds support for multiple UUIDs per partition to register individual
      SRI callbacks.
    - Handles Rx buffer full framework notifications and provides a general
      interface for future extensions.

2. Improved multiple UUID/services per-partition handling

    - Adds support for UUID passing in FFA_MSG_SEND2, improving multiple
      UUID/service support in the driver.
    - Introduces a helper function to check whether a partition can
      receive REQUEST2 messages.

3. Partition handling generic improvements

    - Implements device unregistration for better partition cleanup.
    - Improves handling of the host partition presence in partition info.

4. FF-A version updates

    - Upgrades the driver version to FF-A v1.2.
    - Rejects major versions higher than the driver version as incompatible.

5. Big-Endian support fixes

    - Fixes big-endian issues in:
        __ffa_partition_info_regs_get()
        __ffa_partition_info_get()
    - Big-endian support is still incomplete, and only these changes can
      be verified without additional application/testing updates at the
      moment. We can discover all the partitions correctly with big-endian
      kernel now.

6. Miscellaneous fixes

    - Fixes function prototype misalignments in: sync_send_receive{,2}
    - Adds explicit type casting for return values from: FFA_VERSION
      and NOTIFICATION_INFO_GET
    - Corrects vCPU list parsing in ffa_notification_info_get().

7. UUID management in the driver and DMA mask updates

    - Replaces UUID buffer with the standard UUID format in ffa_partition_info
      structure.
    - Fixes a typo in some FF-A bus macros.
    - Sets dma_mask for FF-A devices.

In short, this update enhances notification handling, UUID support, and
overall robustness of the FF-A driver while addressing multiple fixes
and cleanups.

----------------------------------------------------------------
Sudeep Holla (21):
      firmware: arm_ffa: Replace SCMI by FF-A in the macro
      firmware: arm_ffa: Replace UUID buffer to standard UUID format
      firmware: arm_ffa: Align sync_send_receive{,2} function prototypes
      firmware: arm_ffa: Fix big-endian support in __ffa_partition_info_get()
      firmware: arm_ffa: Fix big-endian support in __ffa_partition_info_regs_get()
      firmware: arm_ffa: Handle the presence of host partition in the partition info
      firmware: arm_ffa: Unregister the FF-A devices when cleaning up the partitions
      firmware: arm_ffa: Helper to check if a partition can receive REQUEST2 messages
      firmware: arm_ffa: Add support for passing UUID in FFA_MSG_SEND2
      firmware: arm_ffa: Upgrade FF-A version to v1.2 in the driver
      firmware: arm_ffa: Reject higher major version as incompatible
      firmware: arm_ffa: Remove unnecessary declaration of ffa_partitions_cleanup()
      firmware: arm_ffa: Refactoring to prepare for framework notification support
      firmware: arm_ffa: Stash ffa_device instead of notify_type in notifier_cb_info
      firmware: arm_ffa: Add support for {un,}registration of framework notifications
      firmware: arm_ffa: Add support for handling framework notifications
      firmware: arm_ffa: Allow multiple UUIDs per partition to register SRI callback
      firmware: arm_ffa: Handle ffa_notification_get correctly at virtual FF-A instance
      firmware: arm_ffa: Explicitly cast return value from FFA_VERSION before comparison
      firmware: arm_ffa: Explicitly cast return value from NOTIFICATION_INFO_GET
      firmware: arm_ffa: Skip the first/partition ID when parsing vCPU list

Viresh Kumar (2):
      firmware: arm_ffa: Refactor addition of partition information into XArray
      firmware: arm_ffa: Set dma_mask for ffa devices

 drivers/firmware/arm_ffa/bus.c    |  14 +-
 drivers/firmware/arm_ffa/driver.c | 532 ++++++++++++++++++++++++++++----------
 include/linux/arm_ffa.h           |  22 +-
 3 files changed, 422 insertions(+), 146 deletions(-)