diff options
| author | Tze Yee Ng <tze.yee.ng@altera.com> | 2026-09-21 13:38:09 -0500 |
|---|---|---|
| committer | Dinh Nguyen <dinguyen@kernel.org> | 2026-10-08 09:41:08 -0500 |
| commit | 71513255896d77331804710cd2a5f30cf150adf7 (patch) | |
| tree | a25098255543380f4a5f035420491edbd79f6de4 /include/linux/firmware/intel | |
| parent | 7a728c0e29d7a63fa1c154b1f8e45cafeab6a634 (diff) | |
firmware: stratix10-svc: Add for SDM mailbox doorbell interrupt
Add support for SDM (Secure Device Manager) mailbox doorbell interrupt for
async transactions. On interrupt, a workqueue is triggered which polls the
ATF for pending responses and retrieves the bitmap of all retrieved and
unprocessed transaction ids of mailbox responses from SDM. It then triggers
the corresponding registered callbacks.
Signed-off-by: Mahesh Rao <mahesh.rao@altera.com>
Signed-off-by: Tze Yee Ng <tze.yee.ng@altera.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Diffstat (limited to 'include/linux/firmware/intel')
| -rw-r--r-- | include/linux/firmware/intel/stratix10-smc.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/firmware/intel/stratix10-smc.h b/include/linux/firmware/intel/stratix10-smc.h index b0d42d585a75..6a6fa51ad39e 100644 --- a/include/linux/firmware/intel/stratix10-smc.h +++ b/include/linux/firmware/intel/stratix10-smc.h @@ -725,6 +725,27 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE) INTEL_SIP_SMC_ASYNC_VAL(INTEL_SIP_SMC_ASYNC_FUNC_ID_POLL) /** + * Request INTEL_SIP_SMC_ASYNC_POLL_ON_IRQ + * Async call used by service driver at EL1 to retrieve the transaction IDs + * of available responses from the SDM mailbox (typically after an IRQ). + * + * Call register usage: + * a0 INTEL_SIP_SMC_ASYNC_POLL_ON_IRQ + * a1-a17 not used + * + * Return status + * a0 INTEL_SIP_SMC_STATUS_OK + * a1-a4 contain a bitmap of pending transaction IDs (set bit positions) + * a5-a17 not used + * Or + * a0 INTEL_SIP_SMC_STATUS_NO_RESPONSE + * a1-a17 not used + */ +#define INTEL_SIP_SMC_ASYNC_FUNC_ID_IRQ_POLL (0xC9) +#define INTEL_SIP_SMC_ASYNC_POLL_ON_IRQ \ + INTEL_SIP_SMC_ASYNC_VAL(INTEL_SIP_SMC_ASYNC_FUNC_ID_IRQ_POLL) + +/** * Request INTEL_SIP_SMC_ASYNC_HWMON_READTEMP * Async call to request temperature * |