From: Elliot Berman <quic_eberman@quicinc.com>
To: Alex Elder <elder@linaro.org>,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
Murali Nalajal <quic_mnalajal@quicinc.com>,
Trilok Soni <quic_tsoni@quicinc.com>,
Srivatsa Vaddagiri <quic_svaddagi@quicinc.com>,
Carl van Schaik <quic_cvanscha@quicinc.com>,
Philip Derrin <quic_pderrin@quicinc.com>,
Prakruthi Deepak Heragu <quic_pheragu@quicinc.com>,
Jonathan Corbet <corbet@lwn.net>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Konrad Dybcio <konrad.dybcio@linaro.org>,
Bjorn Andersson <andersson@kernel.org>,
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
"Fuad Tabba" <tabba@google.com>,
Sean Christopherson <seanjc@google.com>,
"Andrew Morton" <akpm@linux-foundation.org>
Cc: <linux-arm-msm@vger.kernel.org>, <linux-doc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>, <linux-mm@kvack.org>,
Elliot Berman <quic_eberman@quicinc.com>
Subject: [PATCH v17 05/35] virt: gunyah: Add hypervisor driver
Date: Thu, 22 Feb 2024 15:16:28 -0800 [thread overview]
Message-ID: <20240222-gunyah-v17-5-1e9da6763d38@quicinc.com> (raw)
In-Reply-To: <20240222-gunyah-v17-0-1e9da6763d38@quicinc.com>
Add driver to detect when running under Gunyah. It performs basic
identification hypercall and populates the platform bus for resource
manager to probe.
Signed-off-by: Elliot Berman <quic_eberman@quicinc.com>
---
drivers/virt/Makefile | 1 +
drivers/virt/gunyah/Makefile | 3 +++
drivers/virt/gunyah/gunyah.c | 52 ++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 56 insertions(+)
diff --git a/drivers/virt/Makefile b/drivers/virt/Makefile
index f29901bd78205..ef6a3835d078c 100644
--- a/drivers/virt/Makefile
+++ b/drivers/virt/Makefile
@@ -10,3 +10,4 @@ obj-y += vboxguest/
obj-$(CONFIG_NITRO_ENCLAVES) += nitro_enclaves/
obj-$(CONFIG_ACRN_HSM) += acrn/
obj-y += coco/
+obj-y += gunyah/
diff --git a/drivers/virt/gunyah/Makefile b/drivers/virt/gunyah/Makefile
new file mode 100644
index 0000000000000..34f32110faf9a
--- /dev/null
+++ b/drivers/virt/gunyah/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_GUNYAH) += gunyah.o
diff --git a/drivers/virt/gunyah/gunyah.c b/drivers/virt/gunyah/gunyah.c
new file mode 100644
index 0000000000000..ef8a85f275905
--- /dev/null
+++ b/drivers/virt/gunyah/gunyah.c
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2023-2024 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include <linux/gunyah.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+
+static int gunyah_probe(struct platform_device *pdev)
+{
+ struct gunyah_hypercall_hyp_identify_resp gunyah_api;
+
+ if (!arch_is_gunyah_guest())
+ return -ENODEV;
+
+ gunyah_hypercall_hyp_identify(&gunyah_api);
+
+ pr_info("Running under Gunyah hypervisor %llx/v%u\n",
+ FIELD_GET(GUNYAH_API_INFO_VARIANT_MASK, gunyah_api.api_info),
+ gunyah_api_version(&gunyah_api));
+
+ /* Might move this out to individual drivers if there's ever an API version bump */
+ if (gunyah_api_version(&gunyah_api) != GUNYAH_API_V1) {
+ pr_info("Unsupported Gunyah version: %u\n",
+ gunyah_api_version(&gunyah_api));
+ return -ENODEV;
+ }
+
+ return devm_of_platform_populate(&pdev->dev);
+}
+
+static const struct of_device_id gunyah_of_match[] = {
+ { .compatible = "gunyah-hypervisor" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, gunyah_of_match);
+
+/* clang-format off */
+static struct platform_driver gunyah_driver = {
+ .probe = gunyah_probe,
+ .driver = {
+ .name = "gunyah",
+ .of_match_table = gunyah_of_match,
+ }
+};
+/* clang-format on */
+module_platform_driver(gunyah_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Gunyah Driver");
--
2.34.1
next prev parent reply other threads:[~2024-02-22 23:21 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-22 23:16 [PATCH v17 00/35] Drivers for Gunyah hypervisor Elliot Berman
2024-02-22 23:16 ` [PATCH v17 01/35] docs: gunyah: Introduce Gunyah Hypervisor Elliot Berman
2024-03-05 10:53 ` Pavan Kondeti
2024-03-07 15:37 ` Srivatsa Vaddagiri
2024-02-22 23:16 ` [PATCH v17 02/35] dt-bindings: Add binding for gunyah hypervisor Elliot Berman
2024-02-22 23:16 ` [PATCH v17 03/35] gunyah: Common types and error codes for Gunyah hypercalls Elliot Berman
2024-02-22 23:16 ` [PATCH v17 04/35] virt: gunyah: Add hypercalls to identify Gunyah Elliot Berman
2024-02-22 23:16 ` Elliot Berman [this message]
2024-02-23 21:10 ` [PATCH v17 05/35] virt: gunyah: Add hypervisor driver Konrad Dybcio
2024-02-23 22:58 ` Elliot Berman
2024-02-23 23:46 ` Konrad Dybcio
2024-03-07 15:38 ` Srivatsa Vaddagiri
2024-02-22 23:16 ` [PATCH v17 06/35] virt: gunyah: msgq: Add hypercalls to send and receive messages Elliot Berman
2024-02-22 23:16 ` [PATCH v17 07/35] gunyah: rsc_mgr: Add resource manager RPC core Elliot Berman
2024-03-07 15:38 ` Srivatsa Vaddagiri
2024-03-07 16:41 ` Elliot Berman
2024-02-22 23:16 ` [PATCH v17 08/35] gunyah: vm_mgr: Introduce basic VM Manager Elliot Berman
2024-03-07 15:39 ` Srivatsa Vaddagiri
2024-02-22 23:16 ` [PATCH v17 09/35] gunyah: rsc_mgr: Add VM lifecycle RPC Elliot Berman
2024-03-07 15:39 ` Srivatsa Vaddagiri
2024-02-22 23:16 ` [PATCH v17 10/35] gunyah: vm_mgr: Add VM start/stop Elliot Berman
2024-03-11 5:38 ` Srivatsa Vaddagiri
2024-02-22 23:16 ` [PATCH v17 11/35] virt: gunyah: Translate gh_rm_hyp_resource into gunyah_resource Elliot Berman
2024-03-11 5:39 ` Srivatsa Vaddagiri
2024-03-11 17:19 ` Elliot Berman
2024-04-05 3:10 ` Pavan Kondeti
2024-04-05 15:18 ` Elliot Berman
2024-02-22 23:16 ` [PATCH v17 12/35] virt: gunyah: Add resource tickets Elliot Berman
2024-03-11 5:38 ` Srivatsa Vaddagiri
2024-03-11 17:13 ` Elliot Berman
2024-02-22 23:16 ` [PATCH v17 13/35] gunyah: vm_mgr: Add framework for VM Functions Elliot Berman
2024-03-13 9:20 ` Srivatsa Vaddagiri
2024-02-22 23:16 ` [PATCH v17 14/35] virt: gunyah: Add hypercalls for running a vCPU Elliot Berman
2024-03-13 9:21 ` Srivatsa Vaddagiri
2024-02-22 23:16 ` [PATCH v17 15/35] virt: gunyah: Add proxy-scheduled vCPUs Elliot Berman
2024-03-13 9:21 ` Srivatsa Vaddagiri
2024-04-24 9:39 ` Srivatsa Vaddagiri
2024-04-24 17:01 ` Elliot Berman
2024-02-22 23:16 ` [PATCH v17 16/35] gunyah: Add hypercalls for demand paging Elliot Berman
2024-03-13 15:35 ` Srivatsa Vaddagiri
2024-02-22 23:16 ` [PATCH v17 17/35] gunyah: rsc_mgr: Add memory parcel RPC Elliot Berman
2024-03-14 14:02 ` Srivatsa Vaddagiri
2024-02-22 23:16 ` [PATCH v17 18/35] mm/interval_tree: Export iter_first/iter_next Elliot Berman
2024-02-22 23:16 ` [PATCH v17 19/35] arch/mm: Export direct {un,}map functions Elliot Berman
2024-02-23 7:09 ` Christoph Hellwig
2024-02-24 0:37 ` Elliot Berman
2024-02-26 11:06 ` Christoph Hellwig
2024-02-26 11:53 ` David Hildenbrand
2024-02-26 17:27 ` Elliot Berman
2024-02-27 9:49 ` David Hildenbrand
2024-03-01 1:35 ` Elliot Berman
2024-03-04 13:10 ` Quentin Perret
2024-03-04 23:37 ` Elliot Berman
2024-03-05 15:30 ` Quentin Perret
2024-03-05 20:26 ` Elliot Berman
2024-03-06 12:05 ` Quentin Perret
2024-03-08 19:55 ` Elliot Berman
2024-02-22 23:16 ` [PATCH v17 20/35] virt: gunyah: Add interfaces to map memory into guest address space Elliot Berman
2024-02-22 23:16 ` [PATCH v17 21/35] gunyah: rsc_mgr: Add platform ops on mem_lend/mem_reclaim Elliot Berman
2024-02-22 23:16 ` [PATCH v17 22/35] virt: gunyah: Add Qualcomm Gunyah platform ops Elliot Berman
2024-02-22 23:16 ` [PATCH v17 23/35] virt: gunyah: Implement guestmemfd Elliot Berman
2024-02-22 23:16 ` [PATCH v17 24/35] virt: gunyah: Add ioctl to bind guestmem to VMs Elliot Berman
2024-02-22 23:16 ` [PATCH v17 25/35] virt: gunyah: guestmem: Initialize RM mem parcels from guestmem Elliot Berman
2024-02-22 23:16 ` [PATCH v17 26/35] virt: gunyah: Share guest VM dtb configuration to Gunyah Elliot Berman
2024-02-22 23:16 ` [PATCH v17 27/35] gunyah: rsc_mgr: Add RPC to enable demand paging Elliot Berman
2024-02-22 23:16 ` [PATCH v17 28/35] virt: gunyah: Enable " Elliot Berman
2024-02-22 23:16 ` [PATCH v17 29/35] gunyah: rsc_mgr: Add RPC to set VM boot context Elliot Berman
2024-03-14 14:02 ` Srivatsa Vaddagiri
2024-02-22 23:16 ` [PATCH v17 30/35] virt: gunyah: Allow userspace to initialize context of primary vCPU Elliot Berman
2024-03-14 14:03 ` Srivatsa Vaddagiri
2024-02-22 23:16 ` [PATCH v17 31/35] virt: gunyah: Add hypercalls for sending doorbell Elliot Berman
2024-02-22 23:16 ` [PATCH v17 32/35] virt: gunyah: Add irqfd interface Elliot Berman
2024-02-22 23:16 ` [PATCH v17 33/35] virt: gunyah: Add IO handlers Elliot Berman
2024-02-22 23:16 ` [PATCH v17 34/35] virt: gunyah: Add ioeventfd Elliot Berman
2024-02-22 23:16 ` [PATCH v17 35/35] MAINTAINERS: Add Gunyah hypervisor drivers section Elliot Berman
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