opensbi.git/lib/utils/mailbox, branch master

lib: rpmi: Make RPMI drivers as non-experimental

2025-06-24T03:12:27Z

As RPMI v1.0 specification is frozen, disable the experimental tag for such RPMI drivers. Signed-off-by: Rahul Pathak Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250618053854.2577299-2-rpathak@ventanamicro.com Signed-off-by: Anup Patel

lib: utils: Add Implementation ID and Version as RPMI MPXY attributes

2025-06-24T03:12:27Z

The latest frozen RPMI spec has added Implementation ID and Implementation Version as message protocol specific mpxy attributes. Add support for these. Signed-off-by: Rahul Pathak Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250618053854.2577299-1-rpathak@ventanamicro.com Signed-off-by: Anup Patel

lib: utils/mailbox: Parse A2P doorbell value from DT

2025-05-20T05:40:35Z

The A2P doorbell value written to the 32-bit A2P doorbell value must be discoverd from device tree instead of always using the default value 1. Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20250512083827.804151-4-apatel@ventanamicro.com Signed-off-by: Anup Patel

lib: utils/mailbox: Parse P2A doorbell system MSI index from DT

2025-05-20T05:40:35Z

The P2A doorbell system MSI index is expected to be discovered from device tree instead of RPMI system MSI service group attribute. This is based on ARC feedback before RPMI spec was frozen. Let's parse P2A doorbell system MSI index from device tree and also expose it as rpmi channel attribute to RPMI client drivers. Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20250512083827.804151-3-apatel@ventanamicro.com Signed-off-by: Anup Patel

lib: utils/mailbox: Update DT register name of A2P doorbell

2025-05-20T05:40:35Z

The latest device tree bindings define A2P doorbell register name as "a2p-doorbell" so update rpmi_shmem_transport_init() accordingly. Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20250512083827.804151-2-apatel@ventanamicro.com Signed-off-by: Anup Patel

lib: sbi: Remove unnecessary SBI_INIT_LIST_HEAD

2025-04-15T06:08:20Z

No need to initialise the nodes to be added to the linked list Signed-off-by: Xiang W Reviewed-by: Samuel Holland Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250319123944.505756-1-wxjstz@126.com Signed-off-by: Anup Patel

include: sbi_utils: Update RPMI service group IDs and BASE service group

2025-02-13T05:40:03Z

The service group ID assignment and some of the BASE services have changes in the latest RPMI specification so let's update the RPMI implementation accordingly. Signed-off-by: Anup Patel Reviewed-by: Samuel Holland

lib: utils: Implement get_attribute() for the RPMI shared memory mailbox

2025-02-13T05:40:03Z

To allow clients query service group version of a RPMI mailbox channel, implement get_attribute() callback for the RPMI shared memory mailbox controller. Signed-off-by: Anup Patel

lib: utils: Mark RPMI drivers as experimental

2024-12-21T12:52:47Z

These drivers were merged on an experimental basis without the RPMI specification being frozen. As a result, they may not be compatible with the frozen version of the RPMI protocol. Additionally, their devicetree bindings have not been reviewed and are subject to change. Warn the user that these drivers make no compatibility guarantees, and that their behavior and devicetree bindings may change incompatibly in future versions of OpenSBI. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib/utils: Add RPMI messaging protocol and shared memory transport support

2024-12-06T03:56:21Z

The RISC-V Platform Management Interface (RPMI) defines a messaging protocol and shared memory based transport for bi-directional communication with an on-chip or external microcontroller. To support RPMI in OpenSBI, add: 1) The RPMI messaging protocol defines and helper macros 2) A FDT mailbox driver for the RPMI shared memory transport Signed-off-by: Rahul Pathak Co-developed-by: Subrahmanya Lingappa Signed-off-by: Subrahmanya Lingappa Co-developed-by: Anup Patel Signed-off-by: Anup Patel