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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mcb.h (3812B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * MEN Chameleon Bus.
      4 *
      5 * Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de)
      6 * Author: Johannes Thumshirn <johannes.thumshirn@men.de>
      7 */
      8#ifndef _LINUX_MCB_H
      9#define _LINUX_MCB_H
     10
     11#include <linux/mod_devicetable.h>
     12#include <linux/device.h>
     13#include <linux/irqreturn.h>
     14
     15#define CHAMELEON_FILENAME_LEN 12
     16
     17struct mcb_driver;
     18struct mcb_device;
     19
     20/**
     21 * struct mcb_bus - MEN Chameleon Bus
     22 *
     23 * @dev: bus device
     24 * @carrier: pointer to carrier device
     25 * @bus_nr: mcb bus number
     26 * @get_irq: callback to get IRQ number
     27 * @revision: the FPGA's revision number
     28 * @model: the FPGA's model number
     29 * @filename: the FPGA's name
     30 */
     31struct mcb_bus {
     32	struct device dev;
     33	struct device *carrier;
     34	int bus_nr;
     35	u8 revision;
     36	char model;
     37	u8 minor;
     38	char name[CHAMELEON_FILENAME_LEN + 1];
     39	int (*get_irq)(struct mcb_device *dev);
     40};
     41
     42static inline struct mcb_bus *to_mcb_bus(struct device *dev)
     43{
     44	return container_of(dev, struct mcb_bus, dev);
     45}
     46
     47/**
     48 * struct mcb_device - MEN Chameleon Bus device
     49 *
     50 * @dev: device in kernel representation
     51 * @bus: mcb bus the device is plugged to
     52 * @is_added: flag to check if device is added to bus
     53 * @driver: associated mcb_driver
     54 * @id: mcb device id
     55 * @inst: instance in Chameleon table
     56 * @group: group in Chameleon table
     57 * @var: variant in Chameleon table
     58 * @bar: BAR in Chameleon table
     59 * @rev: revision in Chameleon table
     60 * @irq: IRQ resource
     61 * @memory: memory resource
     62 */
     63struct mcb_device {
     64	struct device dev;
     65	struct mcb_bus *bus;
     66	bool is_added;
     67	struct mcb_driver *driver;
     68	u16 id;
     69	int inst;
     70	int group;
     71	int var;
     72	int bar;
     73	int rev;
     74	struct resource irq;
     75	struct resource mem;
     76	struct device *dma_dev;
     77};
     78
     79static inline struct mcb_device *to_mcb_device(struct device *dev)
     80{
     81	return container_of(dev, struct mcb_device, dev);
     82}
     83
     84/**
     85 * struct mcb_driver - MEN Chameleon Bus device driver
     86 *
     87 * @driver: device_driver
     88 * @id_table: mcb id table
     89 * @probe: probe callback
     90 * @remove: remove callback
     91 * @shutdown: shutdown callback
     92 */
     93struct mcb_driver {
     94	struct device_driver driver;
     95	const struct mcb_device_id *id_table;
     96	int (*probe)(struct mcb_device *mdev, const struct mcb_device_id *id);
     97	void (*remove)(struct mcb_device *mdev);
     98	void (*shutdown)(struct mcb_device *mdev);
     99};
    100
    101static inline struct mcb_driver *to_mcb_driver(struct device_driver *drv)
    102{
    103	return container_of(drv, struct mcb_driver, driver);
    104}
    105
    106static inline void *mcb_get_drvdata(struct mcb_device *dev)
    107{
    108	return dev_get_drvdata(&dev->dev);
    109}
    110
    111static inline void mcb_set_drvdata(struct mcb_device *dev, void *data)
    112{
    113	dev_set_drvdata(&dev->dev, data);
    114}
    115
    116extern int __must_check __mcb_register_driver(struct mcb_driver *drv,
    117					struct module *owner,
    118					const char *mod_name);
    119#define mcb_register_driver(driver)		\
    120	__mcb_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
    121extern void mcb_unregister_driver(struct mcb_driver *driver);
    122#define module_mcb_driver(__mcb_driver)		\
    123	module_driver(__mcb_driver, mcb_register_driver, mcb_unregister_driver)
    124extern void mcb_bus_add_devices(const struct mcb_bus *bus);
    125extern int mcb_device_register(struct mcb_bus *bus, struct mcb_device *dev);
    126extern struct mcb_bus *mcb_alloc_bus(struct device *carrier);
    127extern struct mcb_bus *mcb_bus_get(struct mcb_bus *bus);
    128extern void mcb_bus_put(struct mcb_bus *bus);
    129extern struct mcb_device *mcb_alloc_dev(struct mcb_bus *bus);
    130extern void mcb_free_dev(struct mcb_device *dev);
    131extern void mcb_release_bus(struct mcb_bus *bus);
    132extern struct resource *mcb_request_mem(struct mcb_device *dev,
    133					const char *name);
    134extern void mcb_release_mem(struct resource *mem);
    135extern int mcb_get_irq(struct mcb_device *dev);
    136extern struct resource *mcb_get_resource(struct mcb_device *dev,
    137					 unsigned int type);
    138
    139#endif /* _LINUX_MCB_H */