firmware: arm_ffa: Update memory descriptor to support v1.1 format

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Update memory transaction descriptor structure to accommodate couple of
new entries in v1.1 which were previously marked reserved and MBZ(must
be zero).

It also removes the flexible array member ep_mem_access in the memory
transaction descriptor structure as it need not be at fixed offset.
Also update ffa_mem_desc_offset() accessor to handle both old and new
formats of memory transaction descriptors.

The updated ffa_mem_region structure aligns with new format in v1.1 and
hence the driver/user must take care not to use members beyond and
including ep_mem_offset when using the old format.

Link: https://lore.kernel.org/r/20231005-ffa_v1-1_notif-v4-16-cddd3237809c@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

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This commit is contained in:

Sudeep Holla 2023-10-05 15:45:09 +01:00

parent e4607b84c6

commit 113580530e

2 changed files with 30 additions and 14 deletions

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11

drivers/firmware/arm_ffa/driver.c

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33

include/linux/arm_ffa.h

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