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| author | Etienne Carriere <etienne.carriere@linaro.org> | 2023-03-22 16:22:12 +0300 |
|---|---|---|
| committer | Jens Wiklander <jens.wiklander@linaro.org> | 2023-03-30 09:27:05 +0300 |
| commit | b3b4ced12c1bc829888803ce07fff317e590ec1c (patch) | |
| tree | e09b21a6b40c98ecddc1a233b4c66138fa55ca53 /drivers/tee/optee/optee_private.h | |
| parent | 0d0eaa780ba3b8a02a1ac87f38c34dfe365f27d6 (diff) | |
| download | linux-b3b4ced12c1bc829888803ce07fff317e590ec1c.tar.xz | |
optee: add per cpu asynchronous notification
Implements use of per-cpu irq for optee asynchronous notification.
Existing optee async notif implementation allows OP-TEE world to
raise an interrupt on which Linux optee driver will query some pending
events. This change allows the signaling interrupt to be a per-cpu
interrupt as with Arm GIC PPIs. Using a PPI instead of an SPI is useful
when no GIC lines are provisioned in the chip design and there are spare
PPI lines.
Cc: Jens Wiklander <jens.wiklander@linaro.org>
Cc: Sumit Garg <sumit.garg@linaro.org>
Cc: Marc Zyngier <maz@kernel.org>
Co-developed-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
[JW: fixing a spell error in @notif_pcpu_wq description]
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Diffstat (limited to 'drivers/tee/optee/optee_private.h')
| -rw-r--r-- | drivers/tee/optee/optee_private.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/tee/optee/optee_private.h b/drivers/tee/optee/optee_private.h index 04ae58892608..72685ee0d53f 100644 --- a/drivers/tee/optee/optee_private.h +++ b/drivers/tee/optee/optee_private.h @@ -94,11 +94,35 @@ struct optee_supp { struct completion reqs_c; }; +/* + * struct optee_pcpu - per cpu notif private struct passed to work functions + * @optee optee device reference + */ +struct optee_pcpu { + struct optee *optee; +}; + +/* + * struct optee_smc - optee smc communication struct + * @invoke_fn handler function to invoke secure monitor + * @memremaped_shm virtual address of memory in shared memory pool + * @sec_caps: secure world capabilities defined by + * OPTEE_SMC_SEC_CAP_* in optee_smc.h + * @notif_irq interrupt used as async notification by OP-TEE or 0 + * @optee_pcpu per_cpu optee instance for per cpu work or NULL + * @notif_pcpu_wq workqueue for per cpu asynchronous notification or NULL + * @notif_pcpu_work work for per cpu asynchronous notification + * @notif_cpuhp_state CPU hotplug state assigned for pcpu interrupt management + */ struct optee_smc { optee_invoke_fn *invoke_fn; void *memremaped_shm; u32 sec_caps; unsigned int notif_irq; + struct optee_pcpu __percpu *optee_pcpu; + struct workqueue_struct *notif_pcpu_wq; + struct work_struct notif_pcpu_work; + unsigned int notif_cpuhp_state; }; /** |