Re: [PATCH v11 08/11] tee: add Qualcomm TEE driver

On Wed, Sep 10, 2025 at 08:41:21PM -0700, Amirreza Zarrabi wrote:
> Introduce qcomtee_object, which represents an object in both QTEE and
> the kernel. QTEE clients can invoke an instance of qcomtee_object to
> access QTEE services. If this invocation produces a new object in QTEE,
> an instance of qcomtee_object will be returned.
> 
> Similarly, QTEE can request services from by issuing a callback
> request, which invokes an instance of qcomtee_object.
> 
> Implement initial support for exporting qcomtee_object to userspace
> and QTEE, enabling the invocation of objects hosted in QTEE and userspace
> through the TEE subsystem.
> 
> Tested-by: Neil Armstrong <[email protected]>
> Tested-by: Harshal Dev <[email protected]>
> Acked-by: Sumit Garg <[email protected]>
> Signed-off-by: Amirreza Zarrabi <[email protected]>
> ---
>  MAINTAINERS                          |   6 +
>  drivers/tee/Kconfig                  |   1 +
>  drivers/tee/Makefile                 |   1 +
>  drivers/tee/qcomtee/Kconfig          |  12 +
>  drivers/tee/qcomtee/Makefile         |   7 +
>  drivers/tee/qcomtee/async.c          | 182 +++++++
>  drivers/tee/qcomtee/call.c           | 813 +++++++++++++++++++++++++++++++
>  drivers/tee/qcomtee/core.c           | 906 +++++++++++++++++++++++++++++++++++
>  drivers/tee/qcomtee/qcomtee.h        | 143 ++++++
>  drivers/tee/qcomtee/qcomtee_msg.h    | 304 ++++++++++++
>  drivers/tee/qcomtee/qcomtee_object.h | 316 ++++++++++++
>  drivers/tee/qcomtee/shm.c            | 153 ++++++
>  drivers/tee/qcomtee/user_obj.c       | 692 ++++++++++++++++++++++++++
>  include/uapi/linux/tee.h             |   1 +
>  14 files changed, 3537 insertions(+)
> 
> +
> +static int
> +qcomtee_object_invoke_ctx_invoke(struct qcomtee_object_invoke_ctx *oic,
> +				 int *result, u64 *res_type)
> +{
> +	phys_addr_t out_msg_paddr;
> +	phys_addr_t in_msg_paddr;
> +	int ret;
> +	u64 res;
> +
> +	tee_shm_get_pa(oic->out_shm, 0, &out_msg_paddr);
> +	tee_shm_get_pa(oic->in_shm, 0, &in_msg_paddr);
> +	if (!(oic->flags & QCOMTEE_OIC_FLAG_BUSY))
> +		ret = qcom_scm_qtee_invoke_smc(in_msg_paddr, oic->in_msg.size,
> +					       out_msg_paddr, oic->out_msg.size,
> +					       &res, res_type);
> +	else
> +		ret = qcom_scm_qtee_callback_response(out_msg_paddr,
> +						      oic->out_msg.size,
> +						      &res, res_type);
> +
> +	if (ret)
> +		pr_err("QTEE returned with %d.\n", ret);
> +	else
> +		*result = (int)res;

After enablign QCOMTEE driver, I observe the following error during the
bootup on RB3 Gen2:

[    4.720777] qcomtee: QTEE returned with -22.
[    4.725251] qcomtee: QTEE version 0.0.0


> +
> +	return ret;
> +}
> +

-- 
With best wishes
Dmitry