From: Sudeep Holla <sudeep.holla@arm.com>
To: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, op-tee@lists.trustedfirmware.org
Cc: Sudeep Holla <sudeep.holla@arm.com>,
Marc Bonnici <marc.bonnici@arm.com>,
Achin Gupta <achin.gupta@arm.com>,
Jens Wiklander <jens.wiklander@linaro.org>,
Valentin Laurent <valentin.laurent@trustonic.com>,
Lukas Hanel <lukas.hanel@trustonic.com>,
Coboy Chen <coboy.chen@mediatek.com>
Subject: [PATCH v2 04/10] firmware: arm_ffa: Add support for querying FF-A features
Date: Fri, 2 Sep 2022 13:40:26 +0100 [thread overview]
Message-ID: <20220902124032.788488-5-sudeep.holla@arm.com> (raw)
In-Reply-To: <20220902124032.788488-1-sudeep.holla@arm.com>
Add support for FFA_FEATURES to discover properties supported at the
FF-A interface. This interface can be used to query:
- If an FF-A interface is implemented by the component at the higher EL,
- If an implemented FF-A interface also implements any optional features
described in its interface definition, and
- Any implementation details exported by an implemented FF-A interface
as described in its interface definition.
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
---
drivers/firmware/arm_ffa/driver.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c
index 04e7cbb1b9aa..81b8d578b6ea 100644
--- a/drivers/firmware/arm_ffa/driver.c
+++ b/drivers/firmware/arm_ffa/driver.c
@@ -571,6 +571,32 @@ static int ffa_memory_reclaim(u64 g_handle, u32 flags)
return 0;
}
+static int ffa_features(u32 func_feat_id, u32 input_props,
+ u32 *if_props_1, u32 *if_props_2)
+{
+ ffa_value_t id;
+
+ if (!ARM_SMCCC_IS_FAST_CALL(func_feat_id) && input_props) {
+ pr_err("%s: Invalid Parameters: %x, %x", __func__,
+ func_feat_id, input_props);
+ return ffa_to_linux_errno(FFA_RET_INVALID_PARAMETERS);
+ }
+
+ invoke_ffa_fn((ffa_value_t){
+ .a0 = FFA_FEATURES, .a1 = func_feat_id, .a2 = input_props,
+ }, &id);
+
+ if (id.a0 == FFA_ERROR)
+ return ffa_to_linux_errno((int)id.a2);
+
+ if (if_props_1)
+ *if_props_1 = id.a2;
+ if (if_props_2)
+ *if_props_2 = id.a3;
+
+ return 0;
+}
+
static u32 ffa_api_version_get(void)
{
return drv_info->version;
--
2.37.3
next prev parent reply other threads:[~2022-09-02 13:14 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-02 12:40 [PATCH v2 00/10] firmware: arm_ffa: Refactoring and initial/minor v1.1 update Sudeep Holla
2022-09-02 12:40 ` [PATCH v2 01/10] firmware: arm_ffa: Add pointer to the ffa_dev_ops in struct ffa_dev Sudeep Holla
2022-09-02 12:40 ` [PATCH v2 02/10] tee: optee: Drop ffa_ops in optee_ffa structure using ffa_dev->ops directly Sudeep Holla
2022-09-02 12:40 ` [PATCH v2 03/10] firmware: arm_ffa: Remove ffa_dev_ops_get() Sudeep Holla
2022-09-02 12:40 ` Sudeep Holla [this message]
2022-09-07 12:10 ` [PATCH v2 04/10] firmware: arm_ffa: Add support for querying FF-A features Jens Wiklander
2022-09-02 12:40 ` [PATCH v2 05/10] firmware: arm_ffa: Use FFA_FEATURES to detect if native versions are supported Sudeep Holla
2022-09-02 12:40 ` [PATCH v2 06/10] firmware: arm_ffa: Make memory apis ffa_device independent Sudeep Holla
2022-09-07 8:27 ` Jens Wiklander
2022-09-02 12:40 ` [PATCH v2 07/10] firmware: arm_ffa: Rename ffa_dev_ops as ffa_ops Sudeep Holla
2022-09-05 7:20 ` Sumit Garg
2022-09-07 8:29 ` Jens Wiklander
2022-09-02 12:40 ` [PATCH v2 08/10] firmware: arm_ffa: Add v1.1 get_partition_info support Sudeep Holla
2022-09-07 8:38 ` Jens Wiklander
2022-09-07 11:04 ` Sudeep Holla
2022-09-02 12:40 ` [PATCH v2 09/10] firmware: arm_ffa: Set up 32bit execution mode flag using partiion property Sudeep Holla
2022-09-07 9:01 ` Jens Wiklander
2022-09-07 11:01 ` Sudeep Holla
2022-09-02 12:40 ` [PATCH v2 10/10] firmware: arm_ffa: Split up ffa_ops into info, message and memory operations Sudeep Holla
2022-09-06 10:34 ` [PATCH v2 00/10] firmware: arm_ffa: Refactoring and initial/minor v1.1 update Sudeep Holla
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