From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: Elliot Berman <quic_eberman@quicinc.com>,
Bjorn Andersson <quic_bjorande@quicinc.com>,
Alex Elder <elder@linaro.org>,
Murali Nalajala <quic_mnalajal@quicinc.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>
Cc: Trilok Soni <quic_tsoni@quicinc.com>,
Srivatsa Vaddagiri <quic_svaddagi@quicinc.com>,
Carl van Schaik <quic_cvanscha@quicinc.com>,
Prakruthi Deepak Heragu <quic_pheragu@quicinc.com>,
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Jonathan Corbet <corbet@lwn.net>,
Bagas Sanjaya <bagasdotme@gmail.com>,
Marc Zyngier <maz@kernel.org>,
Jassi Brar <jassisinghbrar@gmail.com>,
Sudeep Holla <sudeep.holla@arm.com>,
linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v9 07/27] virt: gunyah: msgq: Add hypercalls to send and receive messages
Date: Tue, 31 Jan 2023 16:16:34 +0000 [thread overview]
Message-ID: <8e21109b-37d9-982b-1cdb-aeaafaa986ea@linaro.org> (raw)
In-Reply-To: <20230120224627.4053418-8-quic_eberman@quicinc.com>
On 20/01/2023 22:46, Elliot Berman wrote:
> Add hypercalls to send and receive messages on a Gunyah message queue.
>
> Signed-off-by: Elliot Berman <quic_eberman@quicinc.com>
> ---
> arch/arm64/gunyah/gunyah_hypercall.c | 33 ++++++++++++++++++++++++++++
> include/linux/gunyah.h | 5 +++++
> 2 files changed, 38 insertions(+)
>
> diff --git a/arch/arm64/gunyah/gunyah_hypercall.c b/arch/arm64/gunyah/gunyah_hypercall.c
> index ffed4b71641f..d93ad2c08479 100644
> --- a/arch/arm64/gunyah/gunyah_hypercall.c
> +++ b/arch/arm64/gunyah/gunyah_hypercall.c
> @@ -13,6 +13,8 @@ static const uint32_t gunyah_known_uuids[][4] = {
> };
>
> #define GH_HYPERCALL_HYP_IDENTIFY GH_HYPERCALL(0x0000)
> +#define GH_HYPERCALL_MSGQ_SEND GH_HYPERCALL(0x001B)
> +#define GH_HYPERCALL_MSGQ_RECV GH_HYPERCALL(0x001C)
>
> /**
> * gh_hypercall_get_uid() - Returns a UID when running under a Gunyah hypervisor
> @@ -71,5 +73,36 @@ void gh_hypercall_hyp_identify(struct gh_hypercall_hyp_identify_resp *hyp_identi
> }
> EXPORT_SYMBOL_GPL(gh_hypercall_hyp_identify);
>
> +int gh_hypercall_msgq_send(u64 capid, size_t size, uintptr_t buff, int tx_flags, bool *ready)
> +{
> + struct arm_smccc_res res;
> +
> + arm_smccc_1_1_hvc(GH_HYPERCALL_MSGQ_SEND, capid, size, buff, tx_flags, 0, &res);
> +
<--
> + if (res.a0)
> + return res.a0;
> +
> + *ready = res.a1;
> +
> + return res.a0;
-->
this can be made more readable with code something like:
if (res.a0 == SMCCC_RET_SUCCESS)
*ready = res.a1;
return res.a0;
> +}
> +EXPORT_SYMBOL_GPL(gh_hypercall_msgq_send);
> +
> +int gh_hypercall_msgq_recv(u64 capid, uintptr_t buff, size_t size, size_t *recv_size, bool *ready)
> +{
> + struct arm_smccc_res res;
> +
> + arm_smccc_1_1_hvc(GH_HYPERCALL_MSGQ_RECV, capid, buff, size, 0, &res);
> +
> + if (res.a0)
> + return res.a0;
> +
> + *recv_size = res.a1;
> + *ready = res.a2;
> +
same comment.
> + return res.a0;
> +}
> +EXPORT_SYMBOL_GPL(gh_hypercall_msgq_recv);
> +
> MODULE_LICENSE("GPL");
> MODULE_DESCRIPTION("Gunyah Hypervisor Hypercalls");
> diff --git a/include/linux/gunyah.h b/include/linux/gunyah.h
> index 6724d1264d58..b5f61c14ec1e 100644
> --- a/include/linux/gunyah.h
> +++ b/include/linux/gunyah.h
> @@ -104,4 +104,9 @@ struct gh_hypercall_hyp_identify_resp {
>
> void gh_hypercall_hyp_identify(struct gh_hypercall_hyp_identify_resp *hyp_identity);
>
> +#define GH_HYPERCALL_MSGQ_TX_FLAGS_PUSH BIT(0)
Please move unrelated changes from this patch to the patch that
actually uses these.
> +
> +int gh_hypercall_msgq_send(u64 capid, size_t size, uintptr_t buff, int tx_flags, bool *ready);
> +int gh_hypercall_msgq_recv(u64 capid, uintptr_t buff, size_t size, size_t *recv_size, bool *ready);
> +
> #endif
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next prev parent reply other threads:[~2023-01-31 16:18 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-20 22:45 [PATCH v9 00/27] Drivers for gunyah hypervisor Elliot Berman
2023-01-20 22:46 ` [PATCH v9 01/27] docs: gunyah: Introduce Gunyah Hypervisor Elliot Berman
2023-01-20 22:46 ` [PATCH v9 02/27] dt-bindings: Add binding for gunyah hypervisor Elliot Berman
2023-01-20 22:46 ` [PATCH v9 03/27] gunyah: Common types and error codes for Gunyah hypercalls Elliot Berman
2023-01-30 9:58 ` Greg Kroah-Hartman
2023-01-20 22:46 ` [PATCH v9 04/27] virt: gunyah: Add hypercalls to identify Gunyah Elliot Berman
2023-01-30 10:01 ` Greg Kroah-Hartman
2023-01-30 19:05 ` Elliot Berman
2023-01-20 22:46 ` [PATCH v9 05/27] virt: gunyah: Identify hypervisor version Elliot Berman
2023-01-20 22:46 ` [PATCH v9 06/27] mailbox: Allow direct registration to a channel Elliot Berman
2023-01-20 22:46 ` [PATCH v9 07/27] virt: gunyah: msgq: Add hypercalls to send and receive messages Elliot Berman
2023-01-31 16:16 ` Srinivas Kandagatla [this message]
2023-01-20 22:46 ` [PATCH v9 08/27] mailbox: Add Gunyah message queue mailbox Elliot Berman
2023-02-02 9:59 ` Srinivas Kandagatla
2023-02-06 14:00 ` Alex Elder
2023-02-08 20:46 ` Elliot Berman
2023-01-20 22:46 ` [PATCH v9 09/27] gunyah: rsc_mgr: Add resource manager RPC core Elliot Berman
2023-02-02 11:53 ` Srinivas Kandagatla
2023-02-06 14:14 ` Alex Elder
2023-01-20 22:46 ` [PATCH v9 10/27] gunyah: rsc_mgr: Add VM lifecycle RPC Elliot Berman
2023-01-25 6:12 ` Srivatsa Vaddagiri
2023-01-30 21:43 ` Elliot Berman
2023-02-02 12:46 ` Srinivas Kandagatla
2023-02-06 15:41 ` Alex Elder
2023-02-06 17:38 ` Elliot Berman
2023-01-20 22:46 ` [PATCH v9 11/27] gunyah: vm_mgr: Introduce basic VM Manager Elliot Berman
2023-02-02 12:54 ` Srinivas Kandagatla
2023-02-07 0:36 ` Elliot Berman
2023-01-20 22:46 ` [PATCH v9 12/27] gunyah: rsc_mgr: Add RPC for sharing memory Elliot Berman
2023-01-30 10:14 ` Srivatsa Vaddagiri
2023-01-30 21:45 ` Elliot Berman
2023-01-20 22:46 ` [PATCH v9 13/27] gunyah: vm_mgr: Add/remove user memory regions Elliot Berman
2023-01-25 13:34 ` Srivatsa Vaddagiri
2023-01-30 21:46 ` Elliot Berman
2023-02-06 16:12 ` Srinivas Kandagatla
2023-02-06 23:23 ` Elliot Berman
2023-01-20 22:46 ` [PATCH v9 14/27] gunyah: vm_mgr: Add ioctls to support basic non-proxy VM boot Elliot Berman
2023-01-30 8:53 ` Srivatsa Vaddagiri
2023-01-30 21:44 ` Elliot Berman
2023-01-30 21:45 ` Elliot Berman
2023-02-07 11:36 ` Srinivas Kandagatla
2023-02-08 21:04 ` Elliot Berman
2023-01-20 22:46 ` [PATCH v9 15/27] samples: Add sample userspace Gunyah VM Manager Elliot Berman
2023-01-20 22:46 ` [PATCH v9 16/27] gunyah: rsc_mgr: Add platform ops on mem_lend/mem_reclaim Elliot Berman
2023-01-20 22:46 ` [PATCH v9 17/27] firmware: qcom_scm: Use fixed width src vm bitmap Elliot Berman
2023-03-16 3:21 ` (subset) " Bjorn Andersson
2023-01-20 22:46 ` [PATCH v9 18/27] firmware: qcom_scm: Register Gunyah platform ops Elliot Berman
2023-01-31 15:18 ` Srivatsa Vaddagiri
2023-02-07 11:52 ` Srinivas Kandagatla
2023-02-08 1:06 ` Elliot Berman
2023-01-20 22:46 ` [PATCH v9 19/27] docs: gunyah: Document Gunyah VM Manager Elliot Berman
2023-01-20 22:46 ` [PATCH v9 20/27] virt: gunyah: Translate gh_rm_hyp_resource into gunyah_resource Elliot Berman
2023-01-20 22:46 ` [PATCH v9 21/27] gunyah: vm_mgr: Add framework to add VM Functions Elliot Berman
2023-02-03 9:37 ` Srivatsa Vaddagiri
2023-02-03 17:56 ` Srivatsa Vaddagiri
2023-02-07 13:15 ` Srinivas Kandagatla
2023-02-08 19:34 ` Elliot Berman
2023-01-20 22:46 ` [PATCH v9 22/27] virt: gunyah: Add resource tickets Elliot Berman
2023-02-06 9:50 ` Srivatsa Vaddagiri
2023-02-06 21:30 ` Elliot Berman
2023-01-20 22:46 ` [PATCH v9 23/27] virt: gunyah: Add IO handlers Elliot Berman
2023-02-06 10:46 ` Srivatsa Vaddagiri
2023-02-07 3:59 ` Elliot Berman
2023-02-07 12:19 ` Srivatsa Vaddagiri
2023-01-20 22:46 ` [PATCH v9 24/27] virt: gunyah: Add proxy-scheduled vCPUs Elliot Berman
2023-02-07 14:43 ` Srinivas Kandagatla
2023-02-08 18:36 ` Elliot Berman
2023-02-09 10:39 ` Srivatsa Vaddagiri
2023-02-10 6:54 ` Srivatsa Vaddagiri
2023-02-10 17:09 ` Elliot Berman
2023-01-20 22:46 ` [PATCH v9 25/27] virt: gunyah: Add hypercalls for sending doorbell Elliot Berman
2023-01-20 22:46 ` [PATCH v9 26/27] virt: gunyah: Add irqfd interface Elliot Berman
2023-02-07 14:30 ` Srinivas Kandagatla
2023-02-13 8:11 ` Srivatsa Vaddagiri
2023-01-20 22:46 ` [PATCH v9 27/27] virt: gunyah: Add ioeventfd Elliot Berman
2023-02-07 14:19 ` Srinivas Kandagatla
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