On Sat, Apr 26, 2025 at 12:31:32AM +0530, Pankaj Gupta wrote: > +Each 'se-if' comprise of twp layers: > +- (C_DEV Layer) User-Space software-access interface. > +- (Service Layer) OS-level software-access interface. > + > + +--------------------------------------------+ > + | Character Device(C_DEV) | > + | | > + | +---------+ +---------+ +---------+ | > + | | misc #1 | | misc #2 | ... | misc #n | | > + | | dev | | dev | | dev | | > + | +---------+ +---------+ +---------+ | > + | +-------------------------+ | > + | | Misc. Dev Synchr. Logic | | > + | +-------------------------+ | > + | | > + +--------------------------------------------+ > + > + +--------------------------------------------+ > + | Service Layer | > + | | > + | +-----------------------------+ | > + | | Message Serialization Logic | | > + | +-----------------------------+ | > + | +---------------+ | > + | | imx-mailbox | | > + | | mailbox.c | | > + | +---------------+ | > + | | > + +--------------------------------------------+ > + > <snipped> > + > + Misc-device(/dev/<se>_mux_chn) synchronization protocol: > + > + Non-Secure + Secure > + | > + | > + +---------+ +-------------+ | > + | se_fw.c +<---->+imx-mailbox.c| | > + | | | mailbox.c +<-->+------+ +------+ > + +---+-----+ +-------------+ | MU X +<-->+ ELE | > + | +------+ +------+ > + +----------------+ | > + | | | > + v v | > + logical logical | > + receiver waiter | > + + + | > + | | | > + | | | > + | +----+------+ | > + | | | | > + | | | | > + device_ctx device_ctx device_ctx | > + | > + User 0 User 1 User Y | > + +------+ +------+ +------+ | > + |misc.c| |misc.c| |misc.c| | > + kernel space +------+ +------+ +------+ | > + | > + +------------------------------------------------------ | > + | | | | > + userspace /dev/ele_muXch0 | | | > + /dev/ele_muXch1 | | > + /dev/ele_muXchY | > + | > + Wrap both diagrams above in literal code block (use double-colon). Thanks. -- An old man doll... just what I always wanted! - Clara
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