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From: Elliot Berman <quic_eberman@quicinc.com>
To: Bjorn Andersson <quic_bjorande@quicinc.com>
Cc: Elliot Berman <quic_eberman@quicinc.com>,
	Murali Nalajala <quic_mnalajal@quicinc.com>,
	Trilok Soni <quic_tsoni@quicinc.com>,
	"Srivatsa Vaddagiri" <quic_svaddagi@quicinc.com>,
	Carl van Schaik <quic_cvanscha@quicinc.com>,
	Andy Gross <agross@kernel.org>,
	Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
	Jassi Brar <jassisinghbrar@gmail.com>,
	<linux-arm-kernel@lists.infradead.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Sudeep Holla <sudeep.holla@arm.com>,
	Marc Zyngier <maz@kernel.org>, Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Jonathan Corbet <corbet@lwn.net>, "Will Deacon" <will@kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	"Arnd Bergmann" <arnd@arndb.de>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	<devicetree@vger.kernel.org>, <linux-doc@vger.kernel.org>,
	<linux-arm-msm@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH v4 08/14] virt: gunyah: msgq: Add hypercalls to send and receive messages
Date: Wed, 28 Sep 2022 12:56:27 -0700	[thread overview]
Message-ID: <20220928195633.2348848-9-quic_eberman@quicinc.com> (raw)
In-Reply-To: <20220928195633.2348848-1-quic_eberman@quicinc.com>

Add hypercalls to send and receive messages on a Gunyah message queue.

Signed-off-by: Elliot Berman <quic_eberman@quicinc.com>
---
 arch/arm64/gunyah/hypercall.c | 33 +++++++++++++++++++++++++++++++++
 include/asm-generic/gunyah.h  |  5 +++++
 2 files changed, 38 insertions(+)

diff --git a/arch/arm64/gunyah/hypercall.c b/arch/arm64/gunyah/hypercall.c
index 5b08c9d80de0..042cca31879e 100644
--- a/arch/arm64/gunyah/hypercall.c
+++ b/arch/arm64/gunyah/hypercall.c
@@ -26,6 +26,8 @@
 							| ((fn) & GH_CALL_FUNCTION_NUM_MASK))
 
 #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.
@@ -67,5 +69,36 @@ 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;
+}
+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;
+
+	return res.a0;
+}
+EXPORT_SYMBOL_GPL(gh_hypercall_msgq_recv);
+
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Gunyah Hypervisor Hypercalls");
diff --git a/include/asm-generic/gunyah.h b/include/asm-generic/gunyah.h
index 86eb59e203ef..43915faea704 100644
--- a/include/asm-generic/gunyah.h
+++ b/include/asm-generic/gunyah.h
@@ -107,4 +107,9 @@ struct gh_hypercall_hyp_identify_resp {
 void gh_hypercall_get_uid(u32 *uid);
 void gh_hypercall_hyp_identify(struct gh_hypercall_hyp_identify_resp *hyp_identity);
 
+#define GH_HYPERCALL_MSGQ_TX_FLAGS_PUSH		BIT(0)
+
+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
-- 
2.25.1


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  parent reply	other threads:[~2022-09-28 19:59 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-28 19:56 [PATCH v4 00/14] Drivers for gunyah hypervisor Elliot Berman
2022-09-28 19:56 ` [PATCH v4 01/14] docs: gunyah: Introduce Gunyah Hypervisor Elliot Berman
2022-09-29  3:43   ` Bagas Sanjaya
2022-09-29  4:02     ` Elliot Berman
2022-09-28 19:56 ` [PATCH v4 02/14] dt-bindings: Add binding for gunyah hypervisor Elliot Berman
2022-09-28 19:56 ` [PATCH v4 03/14] gunyah: Common types and error codes for Gunyah hypercalls Elliot Berman
2022-09-28 19:56 ` [PATCH v4 04/14] arm64: smccc: Include alternative-macros.h Elliot Berman
2022-09-28 19:56 ` [PATCH v4 05/14] virt: gunyah: Add hypercalls to identify Gunyah Elliot Berman
2022-09-28 19:56 ` [PATCH v4 06/14] virt: gunyah: Add sysfs nodes Elliot Berman
2022-09-30 12:09   ` Greg Kroah-Hartman
2022-10-04 23:50     ` Elliot Berman
2022-10-05  6:23       ` Greg Kroah-Hartman
2022-09-28 19:56 ` [PATCH v4 07/14] mailbox: Allow direct registration to a channel Elliot Berman
2022-09-28 19:56 ` Elliot Berman [this message]
2022-09-28 19:56 ` [PATCH v4 09/14] mailbox: Add Gunyah message queue mailbox Elliot Berman
2022-09-29 16:59   ` Bjorn Andersson
2022-09-29 17:37     ` Jassi Brar
2022-09-28 19:56 ` [PATCH v4 10/14] gunyah: sysfs: Add node to describe supported features Elliot Berman
2022-09-29  7:36   ` Joe Perches
2022-09-29 20:47     ` Elliot Berman
2022-10-02 23:30     ` Jeff Johnson
2022-10-02 23:58       ` Joe Perches
2022-09-30 12:06   ` Greg Kroah-Hartman
2022-10-04 23:53     ` Elliot Berman
2022-09-28 19:56 ` [PATCH v4 11/14] gunyah: rsc_mgr: Add resource manager RPC core Elliot Berman
2022-09-28 19:56 ` [PATCH v4 12/14] gunyah: rsc_mgr: Add RPC for console services Elliot Berman
2022-09-30 12:22   ` Greg Kroah-Hartman
2022-10-03  1:46     ` new checkpatch flexible array test ? (was Re: [PATCH v4 12/14] gunyah: rsc_mgr: Add RPC for console services) Joe Perches
2022-10-03  5:29       ` Greg Kroah-Hartman
2022-10-03  5:38         ` Joe Perches
2022-10-31 18:23           ` Gustavo A. R. Silva
2022-09-28 19:56 ` [PATCH v4 13/14] gunyah: rsc_mgr: Add auxiliary devices for console Elliot Berman
2022-09-30 12:19   ` Greg Kroah-Hartman
2022-10-04 23:49     ` Elliot Berman
2022-10-05  6:21       ` Greg Kroah-Hartman
2022-10-05 21:47         ` Elliot Berman
2022-10-06  6:28           ` Greg Kroah-Hartman
2022-09-28 19:56 ` [PATCH v4 14/14] tty: gunyah: Add tty console driver for RM Console Services Elliot Berman
2022-09-30 12:17   ` Greg Kroah-Hartman
2022-10-07  5:59     ` Elliot Berman
2022-10-07  7:40       ` Greg Kroah-Hartman
2022-10-09 20:59         ` Elliot Berman
2022-10-10 20:23           ` Greg Kroah-Hartman
2022-10-10 20:58             ` Elliot Berman
2022-10-11  6:22               ` Greg Kroah-Hartman
2022-10-11 22:04                 ` Elliot Berman
2022-10-12  6:53                   ` Greg Kroah-Hartman
2022-10-08  7:41     ` Zhou Furong
2022-10-08  9:52       ` Greg Kroah-Hartman
2022-10-03  7:01   ` Jiri Slaby
2022-10-10 18:06     ` Elliot Berman

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