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Successful completion of both direct messaging function can be indicated through an invocation of FFA_YIELD or GGA_INTERRUPT by the callee. FFA_INTERRUPT indicates that the direct request was interrupted and must be resumed through the FFA_RUN interface which is already done in the driver. FFA_YIELD indicates that the receiver endpoint has transitioned to the blocked runtime state and must be resumed through the FFA_RUN interface. However, the way receiver endpoint gets unblocked is implementation defined. So, the driver just sleeps for 1 - 2ms and issues FFA_RUN. It can return to the caller with FFA_YIELD is the receiver endpoint is still blocked. Message-Id: <20240820-ffa_v1-2-v2-6-18c0c5f3c65e@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> |
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| common.h | ||
| driver.c | ||
| Kconfig | ||
| Makefile | ||
| smccc.c | ||