Re: [PATCH v13 05/24] mailbox: Add Gunyah message queue mailbox

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On 09/05/2023 23:47, Elliot Berman wrote:
Gunyah message queues are a unidirectional inter-VM pipe for messages up
to 1024 bytes. This driver supports pairing a receiver message queue and
a transmitter message queue to expose a single mailbox channel.

Signed-off-by: Elliot Berman <quic_eberman@xxxxxxxxxxx>
---
  Documentation/virt/gunyah/message-queue.rst |   8 +
  drivers/mailbox/Makefile                    |   2 +
  drivers/mailbox/gunyah-msgq.c               | 212 ++++++++++++++++++++
  include/linux/gunyah.h                      |  57 ++++++
  4 files changed, 279 insertions(+)
  create mode 100644 drivers/mailbox/gunyah-msgq.c

diff --git a/Documentation/virt/gunyah/message-queue.rst b/Documentation/virt/gunyah/message-queue.rst
index b352918ae54b..70d82a4ef32d 100644
--- a/Documentation/virt/gunyah/message-queue.rst
+++ b/Documentation/virt/gunyah/message-queue.rst

Note, this file is not a part of the patchset. Trying to apply the patchset results in rejects. Probably you missed the documentation patch when sending this series.

@@ -61,3 +61,11 @@ vIRQ: two TX message queues will have two vIRQs (and two capability IDs).
        |               |         |                 |         |               |
        |               |         |                 |         |               |
        +---------------+         +-----------------+         +---------------+
+
+Gunyah message queues are exposed as mailboxes. To create the mailbox, create
+a mbox_client and call `gh_msgq_init()`. On receipt of the RX_READY interrupt,
+all messages in the RX message queue are read and pushed via the `rx_callback`
+of the registered mbox_client.
+
+.. kernel-doc:: drivers/mailbox/gunyah-msgq.c
+ :identifiers: gh_msgq_init--
With best wishes
Dmitry




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