Provide mechanism to check mailbox queue length before posting new
message to the mailbox queue. Use this mechanims in xlnx r5 remoteproc
driver.
Changes in v4:
- %s/msg_slot_ro/tx_slots_avail_ro/
- do not use msg_count to calculate tx_slots_avail_ro instead modify
it directly
- separate xlnx remoteproc driver patch in to two patches
Changes in v3:
- move msg_slot_ro to mbox_client instead of mbox_chan
- allocate separate mailbox client to the "tx" mbox channel
- modify rest of the patch to use msg_slot_ro from mbox_client
Changes in v2:
- Split patchset in two patches for two different subsystems.
- Change design and introduce new field per channel to track mbox
queue length.
- use this new field in xlnx remoteproc driver to prevent sending new
messages if no slots available in the mbox tx channel queue.
Tanmay Shah (3):
mailbox: check mailbox queue is full or not
remoteproc: xlnx: assign mbox client per mbox channel
remoteproc: xlnx: do not send new mbox notification
drivers/mailbox/mailbox.c | 3 +++
drivers/remoteproc/xlnx_r5_remoteproc.c | 26 +++++++++++++++++++------
include/linux/mailbox_client.h | 2 ++
3 files changed, 25 insertions(+), 6 deletions(-)
base-commit: fa3e2d1dc10864887674c484372a9ccc6a01eb18
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2.34.1
