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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
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 12:42 UTC|newest] Thread overview: 40+ 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 ` 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 ` 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 ` 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 2022-09-02 12:40 ` Sudeep Holla [this message] 2022-09-02 12:40 ` [PATCH v2 04/10] firmware: arm_ffa: Add support for querying FF-A features Sudeep Holla 2022-09-07 12:10 ` Jens Wiklander 2022-09-07 12:10 ` 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 ` Sudeep Holla 2022-09-02 12:40 ` [PATCH v2 06/10] firmware: arm_ffa: Make memory apis ffa_device independent Sudeep Holla 2022-09-02 12:40 ` Sudeep Holla 2022-09-07 8:27 ` Jens Wiklander 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 2022-09-02 12:40 ` Sudeep Holla 2022-09-05 7:20 ` Sumit Garg 2022-09-05 7:20 ` Sumit Garg 2022-09-07 8:29 ` Jens Wiklander 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 2022-09-02 12:40 ` Sudeep Holla 2022-09-07 8:38 ` Jens Wiklander 2022-09-07 8:38 ` Jens Wiklander 2022-09-07 11:04 ` Sudeep Holla 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 2022-09-02 12:40 ` Sudeep Holla 2022-09-07 9:01 ` Jens Wiklander 2022-09-07 9:01 ` Jens Wiklander 2022-09-07 11:01 ` Sudeep Holla 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 2022-09-02 12:40 ` Sudeep Holla 2022-09-06 10:34 ` [PATCH v2 00/10] firmware: arm_ffa: Refactoring and initial/minor v1.1 update Sudeep Holla 2022-09-06 10:34 ` Sudeep Holla
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20220902124032.788488-5-sudeep.holla@arm.com \ --to=sudeep.holla@arm.com \ --cc=achin.gupta@arm.com \ --cc=coboy.chen@mediatek.com \ --cc=jens.wiklander@linaro.org \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=lukas.hanel@trustonic.com \ --cc=marc.bonnici@arm.com \ --cc=op-tee@lists.trustedfirmware.org \ --cc=valentin.laurent@trustonic.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.