53 lines
1.3 KiB
C
Executable File
53 lines
1.3 KiB
C
Executable File
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2023-2024 Qualcomm Innovation Center, Inc. All rights reserved.
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*/
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#include <linux/gunyah.h>
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#include <linux/module.h>
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#include <linux/of_platform.h>
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#include <linux/platform_device.h>
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static int gunyah_probe(struct platform_device *pdev)
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{
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struct gunyah_hypercall_hyp_identify_resp gunyah_api;
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if (!arch_is_gunyah_guest())
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return -ENODEV;
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gunyah_hypercall_hyp_identify(&gunyah_api);
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pr_info("Running under Gunyah hypervisor %llx/v%u\n",
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FIELD_GET(GUNYAH_API_INFO_VARIANT_MASK, gunyah_api.api_info),
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gunyah_api_version(&gunyah_api));
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/* Might move this out to individual drivers if there's ever an API version bump */
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if (gunyah_api_version(&gunyah_api) != GUNYAH_API_V1) {
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pr_info("Unsupported Gunyah version: %u\n",
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gunyah_api_version(&gunyah_api));
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return -ENODEV;
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}
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return devm_of_platform_populate(&pdev->dev);
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}
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static const struct of_device_id gunyah_of_match[] = {
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{ .compatible = "gunyah-hypervisor" },
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{}
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};
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MODULE_DEVICE_TABLE(of, gunyah_of_match);
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/* clang-format off */
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static struct platform_driver gunyah_driver = {
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.probe = gunyah_probe,
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.driver = {
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.name = "gunyah",
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.of_match_table = gunyah_of_match,
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}
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};
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/* clang-format on */
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module_platform_driver(gunyah_driver);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Gunyah Driver");
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