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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macio.h (3985B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __MACIO_ASIC_H__
      3#define __MACIO_ASIC_H__
      4#ifdef __KERNEL__
      5
      6#include <linux/of_device.h>
      7
      8extern struct bus_type macio_bus_type;
      9
     10/* MacIO device driver is defined later */
     11struct macio_driver;
     12struct macio_chip;
     13
     14#define MACIO_DEV_COUNT_RESOURCES	8
     15#define MACIO_DEV_COUNT_IRQS		8
     16
     17/*
     18 * the macio_bus structure is used to describe a "virtual" bus
     19 * within a MacIO ASIC. It's typically provided by a macio_pci_asic
     20 * PCI device, but could be provided differently as well (nubus
     21 * machines using a fake OF tree).
     22 *
     23 * The pdev field can be NULL on non-PCI machines
     24 */
     25struct macio_bus
     26{
     27	struct macio_chip	*chip;		/* macio_chip (private use) */
     28	int			index;		/* macio chip index in system */
     29#ifdef CONFIG_PCI
     30	struct pci_dev		*pdev;		/* PCI device hosting this bus */
     31#endif
     32};
     33
     34/*
     35 * the macio_dev structure is used to describe a device
     36 * within an Apple MacIO ASIC.
     37 */
     38struct macio_dev
     39{
     40	struct macio_bus	*bus;		/* macio bus this device is on */
     41	struct macio_dev	*media_bay;	/* Device is part of a media bay */
     42	struct platform_device	ofdev;
     43	struct device_dma_parameters dma_parms; /* ide needs that */
     44	int			n_resources;
     45	struct resource		resource[MACIO_DEV_COUNT_RESOURCES];
     46	int			n_interrupts;
     47	struct resource		interrupt[MACIO_DEV_COUNT_IRQS];
     48};
     49#define	to_macio_device(d) container_of(d, struct macio_dev, ofdev.dev)
     50#define	of_to_macio_device(d) container_of(d, struct macio_dev, ofdev)
     51
     52extern struct macio_dev *macio_dev_get(struct macio_dev *dev);
     53extern void macio_dev_put(struct macio_dev *dev);
     54
     55/*
     56 * Accessors to resources & interrupts and other device
     57 * fields
     58 */
     59
     60static inline int macio_resource_count(struct macio_dev *dev)
     61{
     62	return dev->n_resources;
     63}
     64
     65static inline unsigned long macio_resource_start(struct macio_dev *dev, int resource_no)
     66{
     67	return dev->resource[resource_no].start;
     68}
     69
     70static inline unsigned long macio_resource_end(struct macio_dev *dev, int resource_no)
     71{
     72	return dev->resource[resource_no].end;
     73}
     74
     75static inline unsigned long macio_resource_len(struct macio_dev *dev, int resource_no)
     76{
     77	struct resource *res = &dev->resource[resource_no];
     78	if (res->start == 0 || res->end == 0 || res->end < res->start)
     79		return 0;
     80	return resource_size(res);
     81}
     82
     83extern int macio_enable_devres(struct macio_dev *dev);
     84
     85extern int macio_request_resource(struct macio_dev *dev, int resource_no, const char *name);
     86extern void macio_release_resource(struct macio_dev *dev, int resource_no);
     87extern int macio_request_resources(struct macio_dev *dev, const char *name);
     88extern void macio_release_resources(struct macio_dev *dev);
     89
     90static inline int macio_irq_count(struct macio_dev *dev)
     91{
     92	return dev->n_interrupts;
     93}
     94
     95static inline int macio_irq(struct macio_dev *dev, int irq_no)
     96{
     97	return dev->interrupt[irq_no].start;
     98}
     99
    100static inline void macio_set_drvdata(struct macio_dev *dev, void *data)
    101{
    102	dev_set_drvdata(&dev->ofdev.dev, data);
    103}
    104
    105static inline void* macio_get_drvdata(struct macio_dev *dev)
    106{
    107	return dev_get_drvdata(&dev->ofdev.dev);
    108}
    109
    110static inline struct device_node *macio_get_of_node(struct macio_dev *mdev)
    111{
    112	return mdev->ofdev.dev.of_node;
    113}
    114
    115#ifdef CONFIG_PCI
    116static inline struct pci_dev *macio_get_pci_dev(struct macio_dev *mdev)
    117{
    118	return mdev->bus->pdev;
    119}
    120#endif
    121
    122/*
    123 * A driver for a mac-io chip based device
    124 */
    125struct macio_driver
    126{
    127	int	(*probe)(struct macio_dev* dev, const struct of_device_id *match);
    128	int	(*remove)(struct macio_dev* dev);
    129
    130	int	(*suspend)(struct macio_dev* dev, pm_message_t state);
    131	int	(*resume)(struct macio_dev* dev);
    132	int	(*shutdown)(struct macio_dev* dev);
    133
    134#ifdef CONFIG_PMAC_MEDIABAY
    135	void	(*mediabay_event)(struct macio_dev* dev, int mb_state);
    136#endif
    137	struct device_driver	driver;
    138};
    139#define	to_macio_driver(drv) container_of(drv,struct macio_driver, driver)
    140
    141extern int macio_register_driver(struct macio_driver *);
    142extern void macio_unregister_driver(struct macio_driver *);
    143
    144#endif /* __KERNEL__ */
    145#endif /* __MACIO_ASIC_H__ */