cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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intel_scu_pltdrv.c (1605B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * Platform driver for the Intel SCU.
      4 *
      5 * Copyright (C) 2019, Intel Corporation
      6 * Authors: Divya Sasidharan <divya.s.sasidharan@intel.com>
      7 *	    Mika Westerberg <mika.westerberg@linux.intel.com>
      8 *	    Rajmohan Mani <rajmohan.mani@intel.com>
      9 */
     10
     11#include <linux/err.h>
     12#include <linux/errno.h>
     13#include <linux/ioport.h>
     14#include <linux/mod_devicetable.h>
     15#include <linux/module.h>
     16#include <linux/platform_device.h>
     17
     18#include <asm/intel_scu_ipc.h>
     19
     20static int intel_scu_platform_probe(struct platform_device *pdev)
     21{
     22	struct intel_scu_ipc_data scu_data = {};
     23	struct intel_scu_ipc_dev *scu;
     24	const struct resource *res;
     25
     26	scu_data.irq = platform_get_irq_optional(pdev, 0);
     27	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
     28	if (!res)
     29		return -ENOMEM;
     30
     31	scu_data.mem = *res;
     32
     33	scu = devm_intel_scu_ipc_register(&pdev->dev, &scu_data);
     34	if (IS_ERR(scu))
     35		return PTR_ERR(scu);
     36
     37	platform_set_drvdata(pdev, scu);
     38	return 0;
     39}
     40
     41static const struct acpi_device_id intel_scu_acpi_ids[] = {
     42	{ "INTC1026" },
     43	{}
     44};
     45MODULE_DEVICE_TABLE(acpi, intel_scu_acpi_ids);
     46
     47static struct platform_driver intel_scu_platform_driver = {
     48	.probe = intel_scu_platform_probe,
     49	.driver = {
     50		.name = "intel_scu",
     51		.acpi_match_table = intel_scu_acpi_ids,
     52	},
     53};
     54module_platform_driver(intel_scu_platform_driver);
     55
     56MODULE_AUTHOR("Divya Sasidharan <divya.s.sasidharan@intel.com>");
     57MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com");
     58MODULE_AUTHOR("Rajmohan Mani <rajmohan.mani@intel.com>");
     59MODULE_DESCRIPTION("Intel SCU platform driver");
     60MODULE_LICENSE("GPL v2");