[linux-2.6-block.git] / include / linux / pnp.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Linux Plug and Play Support
 * Copyright by Adam Belay <ambx1@neo.rr.com>
 * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
 *	Bjorn Helgaas <bjorn.helgaas@hp.com>
 */

#ifndef _LINUX_PNP_H
#define _LINUX_PNP_H

#include <linux/device.h>
#include <linux/list.h>
#include <linux/errno.h>
#include <linux/mod_devicetable.h>
#include <linux/console.h>

#define PNP_NAME_LEN		50

struct pnp_protocol;
struct pnp_dev;

/*
 * Resource Management
 */
#ifdef CONFIG_PNP
struct resource *pnp_get_resource(struct pnp_dev *dev, unsigned long type,
				unsigned int num);
#else
static inline struct resource *pnp_get_resource(struct pnp_dev *dev,
			unsigned long type, unsigned int num)
{
	return NULL;
}
#endif

static inline int pnp_resource_valid(struct resource *res)
{
	if (res)
		return 1;
	return 0;
}

static inline int pnp_resource_enabled(struct resource *res)
{
	if (res && !(res->flags & IORESOURCE_DISABLED))
		return 1;
	return 0;
}

static inline resource_size_t pnp_resource_len(struct resource *res)
{
	if (res->start == 0 && res->end == 0)
		return 0;
	return resource_size(res);
}


static inline resource_size_t pnp_port_start(struct pnp_dev *dev,
					     unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar);

	if (pnp_resource_valid(res))
		return res->start;
	return 0;
}

static inline resource_size_t pnp_port_end(struct pnp_dev *dev,
					   unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar);

	if (pnp_resource_valid(res))
		return res->end;
	return 0;
}

static inline unsigned long pnp_port_flags(struct pnp_dev *dev,
					   unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar);

	if (pnp_resource_valid(res))
		return res->flags;
	return IORESOURCE_IO | IORESOURCE_AUTO;
}

static inline int pnp_port_valid(struct pnp_dev *dev, unsigned int bar)
{
	return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_IO, bar));
}

static inline resource_size_t pnp_port_len(struct pnp_dev *dev,
					   unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar);

	if (pnp_resource_valid(res))
		return pnp_resource_len(res);
	return 0;
}


static inline resource_size_t pnp_mem_start(struct pnp_dev *dev,
					    unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar);

	if (pnp_resource_valid(res))
		return res->start;
	return 0;
}

static inline resource_size_t pnp_mem_end(struct pnp_dev *dev,
					  unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar);

	if (pnp_resource_valid(res))
		return res->end;
	return 0;
}

static inline unsigned long pnp_mem_flags(struct pnp_dev *dev, unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar);

	if (pnp_resource_valid(res))
		return res->flags;
	return IORESOURCE_MEM | IORESOURCE_AUTO;
}

static inline int pnp_mem_valid(struct pnp_dev *dev, unsigned int bar)
{
	return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_MEM, bar));
}

static inline resource_size_t pnp_mem_len(struct pnp_dev *dev,
					  unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar);

	if (pnp_resource_valid(res))
		return pnp_resource_len(res);
	return 0;
}


static inline resource_size_t pnp_irq(struct pnp_dev *dev, unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_IRQ, bar);

	if (pnp_resource_valid(res))
		return res->start;
	return -1;
}

static inline unsigned long pnp_irq_flags(struct pnp_dev *dev, unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_IRQ, bar);

	if (pnp_resource_valid(res))
		return res->flags;
	return IORESOURCE_IRQ | IORESOURCE_AUTO;
}

static inline int pnp_irq_valid(struct pnp_dev *dev, unsigned int bar)
{
	return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_IRQ, bar));
}


static inline resource_size_t pnp_dma(struct pnp_dev *dev, unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_DMA, bar);

	if (pnp_resource_valid(res))
		return res->start;
	return -1;
}

static inline unsigned long pnp_dma_flags(struct pnp_dev *dev, unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_DMA, bar);

	if (pnp_resource_valid(res))
		return res->flags;
	return IORESOURCE_DMA | IORESOURCE_AUTO;
}

static inline int pnp_dma_valid(struct pnp_dev *dev, unsigned int bar)
{
	return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_DMA, bar));
}


/*
 * Device Management
 */

struct pnp_card {
	struct device dev;		/* Driver Model device interface */
	unsigned char number;		/* used as an index, must be unique */
	struct list_head global_list;	/* node in global list of cards */
	struct list_head protocol_list;	/* node in protocol's list of cards */
	struct list_head devices;	/* devices attached to the card */

	struct pnp_protocol *protocol;
	struct pnp_id *id;		/* contains supported EISA IDs */

	char name[PNP_NAME_LEN];	/* contains a human-readable name */
	unsigned char pnpver;		/* Plug & Play version */
	unsigned char productver;	/* product version */
	unsigned int serial;		/* serial number */
	unsigned char checksum;		/* if zero - checksum passed */
	struct proc_dir_entry *procdir;	/* directory entry in /proc/bus/isapnp */
};

#define global_to_pnp_card(n) list_entry(n, struct pnp_card, global_list)
#define protocol_to_pnp_card(n) list_entry(n, struct pnp_card, protocol_list)
#define to_pnp_card(n) container_of(n, struct pnp_card, dev)
#define pnp_for_each_card(card)	\
	list_for_each_entry(card, &pnp_cards, global_list)

struct pnp_card_link {
	struct pnp_card *card;
	struct pnp_card_driver *driver;
	void *driver_data;
	pm_message_t pm_state;
};

static inline void *pnp_get_card_drvdata(struct pnp_card_link *pcard)
{
	return pcard->driver_data;
}

static inline void pnp_set_card_drvdata(struct pnp_card_link *pcard, void *data)
{
	pcard->driver_data = data;
}

struct pnp_dev {
	struct device dev;		/* Driver Model device interface */
	u64 dma_mask;
	unsigned int number;		/* used as an index, must be unique */
	int status;

	struct list_head global_list;	/* node in global list of devices */
	struct list_head protocol_list;	/* node in list of device's protocol */
	struct list_head card_list;	/* node in card's list of devices */
	struct list_head rdev_list;	/* node in cards list of requested devices */

	struct pnp_protocol *protocol;
	struct pnp_card *card;	/* card the device is attached to, none if NULL */
	struct pnp_driver *driver;
	struct pnp_card_link *card_link;

	struct pnp_id *id;		/* supported EISA IDs */

	int active;
	int capabilities;
	unsigned int num_dependent_sets;
	struct list_head resources;
	struct list_head options;

	char name[PNP_NAME_LEN];	/* contains a human-readable name */
	int flags;			/* used by protocols */
	struct proc_dir_entry *procent;	/* device entry in /proc/bus/isapnp */
	void *data;
};

#define global_to_pnp_dev(n) list_entry(n, struct pnp_dev, global_list)
#define card_to_pnp_dev(n) list_entry(n, struct pnp_dev, card_list)
#define protocol_to_pnp_dev(n) list_entry(n, struct pnp_dev, protocol_list)
#define	to_pnp_dev(n) container_of(n, struct pnp_dev, dev)
#define pnp_for_each_dev(dev) list_for_each_entry(dev, &pnp_global, global_list)
#define card_for_each_dev(card, dev)	\
	list_for_each_entry(dev, &(card)->devices, card_list)
#define pnp_dev_name(dev) (dev)->name

static inline void *pnp_get_drvdata(struct pnp_dev *pdev)
{
	return dev_get_drvdata(&pdev->dev);
}

static inline void pnp_set_drvdata(struct pnp_dev *pdev, void *data)
{
	dev_set_drvdata(&pdev->dev, data);
}

struct pnp_fixup {
	char id[7];
	void (*quirk_function) (struct pnp_dev *dev);	/* fixup function */
};

/* config parameters */
#define PNP_CONFIG_NORMAL	0x0001
#define PNP_CONFIG_FORCE	0x0002	/* disables validity checking */

/* capabilities */
#define PNP_READ		0x0001
#define PNP_WRITE		0x0002
#define PNP_DISABLE		0x0004
#define PNP_CONFIGURABLE	0x0008
#define PNP_REMOVABLE		0x0010
#define PNP_CONSOLE		0x0020

#define pnp_can_read(dev)	(((dev)->protocol->get) && \
				 ((dev)->capabilities & PNP_READ))
#define pnp_can_write(dev)	(((dev)->protocol->set) && \
				 ((dev)->capabilities & PNP_WRITE))
#define pnp_can_disable(dev)	(((dev)->protocol->disable) &&		  \
				 ((dev)->capabilities & PNP_DISABLE) &&	  \
				 (!((dev)->capabilities & PNP_CONSOLE) || \
				  console_suspend_enabled))
#define pnp_can_configure(dev)	((!(dev)->active) && \
				 ((dev)->capabilities & PNP_CONFIGURABLE))
#define pnp_can_suspend(dev)	(((dev)->protocol->suspend) &&		  \
				 (!((dev)->capabilities & PNP_CONSOLE) || \
				  console_suspend_enabled))


#ifdef CONFIG_ISAPNP
extern struct pnp_protocol isapnp_protocol;
#define pnp_device_is_isapnp(dev) ((dev)->protocol == (&isapnp_protocol))
#else
#define pnp_device_is_isapnp(dev) 0
#endif
extern struct mutex pnp_res_mutex;

#ifdef CONFIG_PNPBIOS
extern struct pnp_protocol pnpbios_protocol;
extern bool arch_pnpbios_disabled(void);
#define pnp_device_is_pnpbios(dev) ((dev)->protocol == (&pnpbios_protocol))
#else
#define pnp_device_is_pnpbios(dev) 0
#define arch_pnpbios_disabled()	false
#endif

#ifdef CONFIG_PNPACPI
extern struct pnp_protocol pnpacpi_protocol;

static inline struct acpi_device *pnp_acpi_device(struct pnp_dev *dev)
{
	if (dev->protocol == &pnpacpi_protocol)
		return dev->data;
	return NULL;
}
#else
#define pnp_acpi_device(dev) 0
#endif

/* status */
#define PNP_READY		0x0000
#define PNP_ATTACHED		0x0001
#define PNP_BUSY		0x0002
#define PNP_FAULTY		0x0004

/* isapnp specific macros */

#define isapnp_card_number(dev)	((dev)->card ? (dev)->card->number : -1)
#define isapnp_csn_number(dev)  ((dev)->number)

/*
 * Driver Management
 */

struct pnp_id {
	char id[PNP_ID_LEN];
	struct pnp_id *next;
};

struct pnp_driver {
	const char *name;
	const struct pnp_device_id *id_table;
	unsigned int flags;
	int (*probe) (struct pnp_dev *dev, const struct pnp_device_id *dev_id);
	void (*remove) (struct pnp_dev *dev);
	void (*shutdown) (struct pnp_dev *dev);
	int (*suspend) (struct pnp_dev *dev, pm_message_t state);
	int (*resume) (struct pnp_dev *dev);
	struct device_driver driver;
};

#define	to_pnp_driver(drv) container_of(drv, struct pnp_driver, driver)

struct pnp_card_driver {
	struct list_head global_list;
	char *name;
	const struct pnp_card_device_id *id_table;
	unsigned int flags;
	int (*probe) (struct pnp_card_link *card,
		      const struct pnp_card_device_id *card_id);
	void (*remove) (struct pnp_card_link *card);
	int (*suspend) (struct pnp_card_link *card, pm_message_t state);
	int (*resume) (struct pnp_card_link *card);
	struct pnp_driver link;
};

#define	to_pnp_card_driver(drv) container_of(drv, struct pnp_card_driver, link)

/* pnp driver flags */
#define PNP_DRIVER_RES_DO_NOT_CHANGE	0x0001	/* do not change the state of the device */
#define PNP_DRIVER_RES_DISABLE		0x0003	/* ensure the device is disabled */

/*
 * Protocol Management
 */

struct pnp_protocol {
	struct list_head protocol_list;
	char *name;

	/* resource control functions */
	int (*get) (struct pnp_dev *dev);
	int (*set) (struct pnp_dev *dev);
	int (*disable) (struct pnp_dev *dev);

	/* protocol specific suspend/resume */
	bool (*can_wakeup) (struct pnp_dev *dev);
	int (*suspend) (struct pnp_dev *dev, pm_message_t state);
	int (*resume) (struct pnp_dev *dev);

	/* used by pnp layer only (look but don't touch) */
	unsigned char number;	/* protocol number */
	struct device dev;	/* link to driver model */
	struct list_head cards;
	struct list_head devices;
};

#define to_pnp_protocol(n) list_entry(n, struct pnp_protocol, protocol_list)
#define protocol_for_each_card(protocol, card)	\
	list_for_each_entry(card, &(protocol)->cards, protocol_list)
#define protocol_for_each_dev(protocol, dev)	\
	list_for_each_entry(dev, &(protocol)->devices, protocol_list)

extern const struct bus_type pnp_bus_type;

#if defined(CONFIG_PNP)

/* device management */
int pnp_device_attach(struct pnp_dev *pnp_dev);
void pnp_device_detach(struct pnp_dev *pnp_dev);
extern struct list_head pnp_global;
extern int pnp_platform_devices;

/* multidevice card support */
struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink,
					const char *id, struct pnp_dev *from);
void pnp_release_card_device(struct pnp_dev *dev);
int pnp_register_card_driver(struct pnp_card_driver *drv);
void pnp_unregister_card_driver(struct pnp_card_driver *drv);
extern struct list_head pnp_cards;

/* resource management */
int pnp_possible_config(struct pnp_dev *dev, int type, resource_size_t base,
			resource_size_t size);
int pnp_auto_config_dev(struct pnp_dev *dev);
int pnp_start_dev(struct pnp_dev *dev);
int pnp_stop_dev(struct pnp_dev *dev);
int pnp_activate_dev(struct pnp_dev *dev);
int pnp_disable_dev(struct pnp_dev *dev);
int pnp_range_reserved(resource_size_t start, resource_size_t end);

/* protocol helpers */
int pnp_is_active(struct pnp_dev *dev);
int compare_pnp_id(struct pnp_id *pos, const char *id);
int pnp_register_driver(struct pnp_driver *drv);
void pnp_unregister_driver(struct pnp_driver *drv);

#define dev_is_pnp(d) ((d)->bus == &pnp_bus_type)

#else

/* device management */
static inline int pnp_device_attach(struct pnp_dev *pnp_dev) { return -ENODEV; }
static inline void pnp_device_detach(struct pnp_dev *pnp_dev) { }

#define pnp_platform_devices 0

/* multidevice card support */
static inline struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink, const char *id, struct pnp_dev *from) { return NULL; }
static inline void pnp_release_card_device(struct pnp_dev *dev) { }
static inline int pnp_register_card_driver(struct pnp_card_driver *drv) { return -ENODEV; }
static inline void pnp_unregister_card_driver(struct pnp_card_driver *drv) { }

/* resource management */
static inline int pnp_possible_config(struct pnp_dev *dev, int type,
				      resource_size_t base,
				      resource_size_t size) { return 0; }
static inline int pnp_auto_config_dev(struct pnp_dev *dev) { return -ENODEV; }
static inline int pnp_start_dev(struct pnp_dev *dev) { return -ENODEV; }
static inline int pnp_stop_dev(struct pnp_dev *dev) { return -ENODEV; }
static inline int pnp_activate_dev(struct pnp_dev *dev) { return -ENODEV; }
static inline int pnp_disable_dev(struct pnp_dev *dev) { return -ENODEV; }
static inline int pnp_range_reserved(resource_size_t start, resource_size_t end) { return 0; }

/* protocol helpers */
static inline int pnp_is_active(struct pnp_dev *dev) { return 0; }
static inline int compare_pnp_id(struct pnp_id *pos, const char *id) { return -ENODEV; }
static inline int pnp_register_driver(struct pnp_driver *drv) { return -ENODEV; }
static inline void pnp_unregister_driver(struct pnp_driver *drv) { }

#define dev_is_pnp(d) false

#endif /* CONFIG_PNP */

/**
 * module_pnp_driver() - Helper macro for registering a PnP driver
 * @__pnp_driver: pnp_driver struct
 *
 * Helper macro for PnP drivers which do not do anything special in module
 * init/exit. This eliminates a lot of boilerplate. Each module may only
 * use this macro once, and calling it replaces module_init() and module_exit()
 */
#define module_pnp_driver(__pnp_driver) \
	module_driver(__pnp_driver, pnp_register_driver, \
				    pnp_unregister_driver)

#endif /* _LINUX_PNP_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	/*
	3	* Linux Plug and Play Support
	4	* Copyright by Adam Belay <ambx1@neo.rr.com>
1f32ca31 BH	5	* Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
1f32ca31 BH	6	* Bjorn Helgaas <bjorn.helgaas@hp.com>
1da177e4 LT	7	*/
	8
	9	#ifndef _LINUX_PNP_H
	10	#define _LINUX_PNP_H
	11
1da177e4 LT	12	#include <linux/device.h>
	13	#include <linux/list.h>
	14	#include <linux/errno.h>
	15	#include <linux/mod_devicetable.h>
01395d79	16	#include <linux/console.h>
1da177e4	17
1da177e4 LT	18	#define PNP_NAME_LEN 50
	19
	20	struct pnp_protocol;
	21	struct pnp_dev;
	22
1da177e4 LT	23	/*
	24	* Resource Management
	25	*/
ef3d7714	26	#ifdef CONFIG_PNP
b563cf59 RH	27	struct resource pnp_get_resource(struct pnp_dev dev, unsigned long type,
b563cf59 RH	28	unsigned int num);
ef3d7714	29	#else
b563cf59 RH	30	static inline struct resource pnp_get_resource(struct pnp_dev dev,
b563cf59 RH	31	unsigned long type, unsigned int num)
ef3d7714 DM	32	{
	33	return NULL;
	34	}
	35	#endif
1da177e4	36
13575e81 BH	37	static inline int pnp_resource_valid(struct resource *res)
13575e81 BH	38	{
aee3ad81 BH	39	if (res)
	40	return 1;
	41	return 0;
	42	}
	43
	44	static inline int pnp_resource_enabled(struct resource *res)
	45	{
	46	if (res && !(res->flags & IORESOURCE_DISABLED))
13575e81 BH	47	return 1;
	48	return 0;
	49	}
	50
	51	static inline resource_size_t pnp_resource_len(struct resource *res)
	52	{
	53	if (res->start == 0 && res->end == 0)
	54	return 0;
28f65c11	55	return resource_size(res);
13575e81 BH	56	}
	57
	58
	59	static inline resource_size_t pnp_port_start(struct pnp_dev *dev,
	60	unsigned int bar)
	61	{
20bfdbba BH	62	struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar);
	63
	64	if (pnp_resource_valid(res))
	65	return res->start;
	66	return 0;
13575e81 BH	67	}
	68
	69	static inline resource_size_t pnp_port_end(struct pnp_dev *dev,
	70	unsigned int bar)
	71	{
20bfdbba BH	72	struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar);
	73
	74	if (pnp_resource_valid(res))
	75	return res->end;
	76	return 0;
13575e81 BH	77	}
	78
	79	static inline unsigned long pnp_port_flags(struct pnp_dev *dev,
	80	unsigned int bar)
	81	{
20bfdbba BH	82	struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar);
	83
	84	if (pnp_resource_valid(res))
	85	return res->flags;
aee3ad81	86	return IORESOURCE_IO \| IORESOURCE_AUTO;
13575e81 BH	87	}
	88
	89	static inline int pnp_port_valid(struct pnp_dev *dev, unsigned int bar)
	90	{
	91	return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_IO, bar));
	92	}
	93
	94	static inline resource_size_t pnp_port_len(struct pnp_dev *dev,
	95	unsigned int bar)
	96	{
20bfdbba BH	97	struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar);
	98
	99	if (pnp_resource_valid(res))
	100	return pnp_resource_len(res);
	101	return 0;
13575e81 BH	102	}
	103
	104
	105	static inline resource_size_t pnp_mem_start(struct pnp_dev *dev,
	106	unsigned int bar)
	107	{
20bfdbba BH	108	struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar);
	109
	110	if (pnp_resource_valid(res))
	111	return res->start;
	112	return 0;
13575e81 BH	113	}
	114
	115	static inline resource_size_t pnp_mem_end(struct pnp_dev *dev,
	116	unsigned int bar)
	117	{
20bfdbba BH	118	struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar);
	119
	120	if (pnp_resource_valid(res))
	121	return res->end;
	122	return 0;
13575e81 BH	123	}
	124
	125	static inline unsigned long pnp_mem_flags(struct pnp_dev *dev, unsigned int bar)
	126	{
20bfdbba BH	127	struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar);
	128
	129	if (pnp_resource_valid(res))
	130	return res->flags;
aee3ad81	131	return IORESOURCE_MEM \| IORESOURCE_AUTO;
13575e81 BH	132	}
	133
	134	static inline int pnp_mem_valid(struct pnp_dev *dev, unsigned int bar)
	135	{
	136	return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_MEM, bar));
	137	}
	138
	139	static inline resource_size_t pnp_mem_len(struct pnp_dev *dev,
	140	unsigned int bar)
	141	{
20bfdbba BH	142	struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar);
	143
	144	if (pnp_resource_valid(res))
	145	return pnp_resource_len(res);
	146	return 0;
13575e81 BH	147	}
	148
	149
	150	static inline resource_size_t pnp_irq(struct pnp_dev *dev, unsigned int bar)
	151	{
20bfdbba BH	152	struct resource *res = pnp_get_resource(dev, IORESOURCE_IRQ, bar);
	153
	154	if (pnp_resource_valid(res))
	155	return res->start;
	156	return -1;
13575e81 BH	157	}
	158
	159	static inline unsigned long pnp_irq_flags(struct pnp_dev *dev, unsigned int bar)
	160	{
20bfdbba BH	161	struct resource *res = pnp_get_resource(dev, IORESOURCE_IRQ, bar);
	162
	163	if (pnp_resource_valid(res))
	164	return res->flags;
aee3ad81	165	return IORESOURCE_IRQ \| IORESOURCE_AUTO;
13575e81 BH	166	}
	167
	168	static inline int pnp_irq_valid(struct pnp_dev *dev, unsigned int bar)
	169	{
	170	return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_IRQ, bar));
	171	}
	172
	173
	174	static inline resource_size_t pnp_dma(struct pnp_dev *dev, unsigned int bar)
	175	{
20bfdbba BH	176	struct resource *res = pnp_get_resource(dev, IORESOURCE_DMA, bar);
	177
	178	if (pnp_resource_valid(res))
	179	return res->start;
	180	return -1;
13575e81 BH	181	}
	182
	183	static inline unsigned long pnp_dma_flags(struct pnp_dev *dev, unsigned int bar)
	184	{
20bfdbba BH	185	struct resource *res = pnp_get_resource(dev, IORESOURCE_DMA, bar);
	186
	187	if (pnp_resource_valid(res))
	188	return res->flags;
aee3ad81	189	return IORESOURCE_DMA \| IORESOURCE_AUTO;
13575e81 BH	190	}
	191
	192	static inline int pnp_dma_valid(struct pnp_dev *dev, unsigned int bar)
	193	{
	194	return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_DMA, bar));
	195	}
1da177e4	196
1da177e4	197
1da177e4	198	/*
fd3f8984	199	* Device Management
1da177e4 LT	200	*/
	201
	202	struct pnp_card {
07d4e9af BH	203	struct device dev; /* Driver Model device interface */
07d4e9af BH	204	unsigned char number; /* used as an index, must be unique */
1da177e4 LT	205	struct list_head global_list; /* node in global list of cards */
	206	struct list_head protocol_list; /* node in protocol's list of cards */
	207	struct list_head devices; /* devices attached to the card */
	208
9dd78466	209	struct pnp_protocol *protocol;
07d4e9af	210	struct pnp_id id; / contains supported EISA IDs */
1da177e4 LT	211
1da177e4 LT	212	char name[PNP_NAME_LEN]; /* contains a human-readable name */
07d4e9af	213	unsigned char pnpver; /* Plug & Play version */
9dd78466	214	unsigned char productver; /* product version */
07d4e9af BH	215	unsigned int serial; /* serial number */
07d4e9af BH	216	unsigned char checksum; /* if zero - checksum passed */
1da177e4 LT	217	struct proc_dir_entry procdir; / directory entry in /proc/bus/isapnp */
	218	};
	219
	220	#define global_to_pnp_card(n) list_entry(n, struct pnp_card, global_list)
	221	#define protocol_to_pnp_card(n) list_entry(n, struct pnp_card, protocol_list)
	222	#define to_pnp_card(n) container_of(n, struct pnp_card, dev)
01b2bafe JG	223	#define pnp_for_each_card(card) \
01b2bafe JG	224	list_for_each_entry(card, &pnp_cards, global_list)
1da177e4 LT	225
1da177e4 LT	226	struct pnp_card_link {
9dd78466 BH	227	struct pnp_card *card;
	228	struct pnp_card_driver *driver;
	229	void *driver_data;
4c98cfef	230	pm_message_t pm_state;
1da177e4 LT	231	};
1da177e4 LT	232
9dd78466	233	static inline void pnp_get_card_drvdata(struct pnp_card_link pcard)
1da177e4 LT	234	{
	235	return pcard->driver_data;
	236	}
	237
9dd78466	238	static inline void pnp_set_card_drvdata(struct pnp_card_link pcard, void data)
1da177e4 LT	239	{
	240	pcard->driver_data = data;
	241	}
	242
	243	struct pnp_dev {
07d4e9af	244	struct device dev; /* Driver Model device interface */
2e17c550	245	u64 dma_mask;
544451a1	246	unsigned int number; /* used as an index, must be unique */
1da177e4 LT	247	int status;
	248
	249	struct list_head global_list; /* node in global list of devices */
	250	struct list_head protocol_list; /* node in list of device's protocol */
	251	struct list_head card_list; /* node in card's list of devices */
	252	struct list_head rdev_list; /* node in cards list of requested devices */
	253
9dd78466 BH	254	struct pnp_protocol *protocol;
	255	struct pnp_card card; / card the device is attached to, none if NULL */
	256	struct pnp_driver *driver;
	257	struct pnp_card_link *card_link;
1da177e4	258
07d4e9af	259	struct pnp_id id; / supported EISA IDs */
1da177e4 LT	260
	261	int active;
	262	int capabilities;
1f32ca31	263	unsigned int num_dependent_sets;
aee3ad81	264	struct list_head resources;
1f32ca31	265	struct list_head options;
1da177e4 LT	266
1da177e4 LT	267	char name[PNP_NAME_LEN]; /* contains a human-readable name */
07d4e9af	268	int flags; /* used by protocols */
1da177e4 LT	269	struct proc_dir_entry procent; / device entry in /proc/bus/isapnp */
	270	void *data;
	271	};
	272
	273	#define global_to_pnp_dev(n) list_entry(n, struct pnp_dev, global_list)
	274	#define card_to_pnp_dev(n) list_entry(n, struct pnp_dev, card_list)
	275	#define protocol_to_pnp_dev(n) list_entry(n, struct pnp_dev, protocol_list)
	276	#define to_pnp_dev(n) container_of(n, struct pnp_dev, dev)
01b2bafe JG	277	#define pnp_for_each_dev(dev) list_for_each_entry(dev, &pnp_global, global_list)
	278	#define card_for_each_dev(card, dev) \
	279	list_for_each_entry(dev, &(card)->devices, card_list)
1da177e4 LT	280	#define pnp_dev_name(dev) (dev)->name
1da177e4 LT	281
9dd78466	282	static inline void pnp_get_drvdata(struct pnp_dev pdev)
1da177e4 LT	283	{
	284	return dev_get_drvdata(&pdev->dev);
	285	}
	286
9dd78466	287	static inline void pnp_set_drvdata(struct pnp_dev pdev, void data)
1da177e4 LT	288	{
	289	dev_set_drvdata(&pdev->dev, data);
	290	}
	291
	292	struct pnp_fixup {
	293	char id[7];
eeb6d1d6	294	void (quirk_function) (struct pnp_dev dev); /* fixup function */
1da177e4 LT	295	};
	296
	297	/* config parameters */
	298	#define PNP_CONFIG_NORMAL 0x0001
	299	#define PNP_CONFIG_FORCE 0x0002 /* disables validity checking */
	300
	301	/* capabilities */
	302	#define PNP_READ 0x0001
	303	#define PNP_WRITE 0x0002
	304	#define PNP_DISABLE 0x0004
	305	#define PNP_CONFIGURABLE 0x0008
	306	#define PNP_REMOVABLE 0x0010
01395d79	307	#define PNP_CONSOLE 0x0020
1da177e4	308
402b310c	309	#define pnp_can_read(dev) (((dev)->protocol->get) && \
1da177e4	310	((dev)->capabilities & PNP_READ))
402b310c	311	#define pnp_can_write(dev) (((dev)->protocol->set) && \
1da177e4	312	((dev)->capabilities & PNP_WRITE))
01395d79 PH	313	#define pnp_can_disable(dev) (((dev)->protocol->disable) && \
	314	((dev)->capabilities & PNP_DISABLE) && \
	315	(!((dev)->capabilities & PNP_CONSOLE) \|\| \
	316	console_suspend_enabled))
1da177e4 LT	317	#define pnp_can_configure(dev) ((!(dev)->active) && \
1da177e4 LT	318	((dev)->capabilities & PNP_CONFIGURABLE))
01395d79 PH	319	#define pnp_can_suspend(dev) (((dev)->protocol->suspend) && \
	320	(!((dev)->capabilities & PNP_CONSOLE) \|\| \
	321	console_suspend_enabled))
	322
1da177e4 LT	323
	324	#ifdef CONFIG_ISAPNP
	325	extern struct pnp_protocol isapnp_protocol;
	326	#define pnp_device_is_isapnp(dev) ((dev)->protocol == (&isapnp_protocol))
	327	#else
	328	#define pnp_device_is_isapnp(dev) 0
	329	#endif
b3bd86e2	330	extern struct mutex pnp_res_mutex;
1da177e4 LT	331
	332	#ifdef CONFIG_PNPBIOS
	333	extern struct pnp_protocol pnpbios_protocol;
80dfd83d	334	extern bool arch_pnpbios_disabled(void);
1da177e4 LT	335	#define pnp_device_is_pnpbios(dev) ((dev)->protocol == (&pnpbios_protocol))
	336	#else
	337	#define pnp_device_is_pnpbios(dev) 0
80dfd83d	338	#define arch_pnpbios_disabled() false
1da177e4 LT	339	#endif
1da177e4 LT	340
9065ce45 BH	341	#ifdef CONFIG_PNPACPI
	342	extern struct pnp_protocol pnpacpi_protocol;
	343
	344	static inline struct acpi_device pnp_acpi_device(struct pnp_dev dev)
	345	{
	346	if (dev->protocol == &pnpacpi_protocol)
	347	return dev->data;
	348	return NULL;
	349	}
	350	#else
	351	#define pnp_acpi_device(dev) 0
	352	#endif
	353
1da177e4 LT	354	/* status */
	355	#define PNP_READY 0x0000
	356	#define PNP_ATTACHED 0x0001
	357	#define PNP_BUSY 0x0002
	358	#define PNP_FAULTY 0x0004
	359
	360	/* isapnp specific macros */
	361
	362	#define isapnp_card_number(dev) ((dev)->card ? (dev)->card->number : -1)
	363	#define isapnp_csn_number(dev) ((dev)->number)
	364
	365	/*
	366	* Driver Management
	367	*/
	368
	369	struct pnp_id {
	370	char id[PNP_ID_LEN];
9dd78466	371	struct pnp_id *next;
1da177e4 LT	372	};
	373
	374	struct pnp_driver {
b927ddf2	375	const char *name;
1da177e4 LT	376	const struct pnp_device_id *id_table;
1da177e4 LT	377	unsigned int flags;
07d4e9af BH	378	int (probe) (struct pnp_dev dev, const struct pnp_device_id *dev_id);
07d4e9af BH	379	void (remove) (struct pnp_dev dev);
abd6633c	380	void (shutdown) (struct pnp_dev dev);
07d4e9af BH	381	int (suspend) (struct pnp_dev dev, pm_message_t state);
07d4e9af BH	382	int (resume) (struct pnp_dev dev);
1da177e4 LT	383	struct device_driver driver;
	384	};
	385
	386	#define to_pnp_driver(drv) container_of(drv, struct pnp_driver, driver)
	387
	388	struct pnp_card_driver {
	389	struct list_head global_list;
9dd78466	390	char *name;
1da177e4 LT	391	const struct pnp_card_device_id *id_table;
1da177e4 LT	392	unsigned int flags;
07d4e9af BH	393	int (probe) (struct pnp_card_link card,
	394	const struct pnp_card_device_id *card_id);
	395	void (remove) (struct pnp_card_link card);
	396	int (suspend) (struct pnp_card_link card, pm_message_t state);
	397	int (resume) (struct pnp_card_link card);
1da177e4 LT	398	struct pnp_driver link;
	399	};
	400
	401	#define to_pnp_card_driver(drv) container_of(drv, struct pnp_card_driver, link)
	402
	403	/* pnp driver flags */
	404	#define PNP_DRIVER_RES_DO_NOT_CHANGE 0x0001 /* do not change the state of the device */
	405	#define PNP_DRIVER_RES_DISABLE 0x0003 /* ensure the device is disabled */
	406
1da177e4 LT	407	/*
	408	* Protocol Management
	409	*/
	410
	411	struct pnp_protocol {
9dd78466 BH	412	struct list_head protocol_list;
9dd78466 BH	413	char *name;
1da177e4 LT	414
1da177e4 LT	415	/* resource control functions */
59284cb4 BH	416	int (get) (struct pnp_dev dev);
59284cb4 BH	417	int (set) (struct pnp_dev dev);
07d4e9af	418	int (disable) (struct pnp_dev dev);
1da177e4	419
fc30e68e	420	/* protocol specific suspend/resume */
b14e033e	421	bool (can_wakeup) (struct pnp_dev dev);
eeb6d1d6 GC	422	int (suspend) (struct pnp_dev dev, pm_message_t state);
eeb6d1d6 GC	423	int (resume) (struct pnp_dev dev);
fc30e68e	424
1da177e4	425	/* used by pnp layer only (look but don't touch) */
9dd78466 BH	426	unsigned char number; /* protocol number */
	427	struct device dev; /* link to driver model */
	428	struct list_head cards;
	429	struct list_head devices;
1da177e4 LT	430	};
	431
	432	#define to_pnp_protocol(n) list_entry(n, struct pnp_protocol, protocol_list)
01b2bafe JG	433	#define protocol_for_each_card(protocol, card) \
	434	list_for_each_entry(card, &(protocol)->cards, protocol_list)
	435	#define protocol_for_each_dev(protocol, dev) \
	436	list_for_each_entry(dev, &(protocol)->devices, protocol_list)
1da177e4	437
2fb7e4dd	438	extern const struct bus_type pnp_bus_type;
cbcdc1de	439
1da177e4 LT	440	#if defined(CONFIG_PNP)
	441
	442	/* device management */
1da177e4 LT	443	int pnp_device_attach(struct pnp_dev *pnp_dev);
	444	void pnp_device_detach(struct pnp_dev *pnp_dev);
	445	extern struct list_head pnp_global;
8f81dd14	446	extern int pnp_platform_devices;
1da177e4 LT	447
1da177e4 LT	448	/* multidevice card support */
9dd78466 BH	449	struct pnp_dev pnp_request_card_device(struct pnp_card_link clink,
	450	const char id, struct pnp_dev from);
	451	void pnp_release_card_device(struct pnp_dev *dev);
	452	int pnp_register_card_driver(struct pnp_card_driver *drv);
	453	void pnp_unregister_card_driver(struct pnp_card_driver *drv);
1da177e4 LT	454	extern struct list_head pnp_cards;
	455
	456	/* resource management */
57fd51a8 BH	457	int pnp_possible_config(struct pnp_dev *dev, int type, resource_size_t base,
57fd51a8 BH	458	resource_size_t size);
1da177e4	459	int pnp_auto_config_dev(struct pnp_dev *dev);
68094e32 PO	460	int pnp_start_dev(struct pnp_dev *dev);
68094e32 PO	461	int pnp_stop_dev(struct pnp_dev *dev);
1da177e4 LT	462	int pnp_activate_dev(struct pnp_dev *dev);
1da177e4 LT	463	int pnp_disable_dev(struct pnp_dev *dev);
1b8e6966	464	int pnp_range_reserved(resource_size_t start, resource_size_t end);
1da177e4 LT	465
1da177e4 LT	466	/* protocol helpers */
9dd78466 BH	467	int pnp_is_active(struct pnp_dev *dev);
9dd78466 BH	468	int compare_pnp_id(struct pnp_id pos, const char id);
1da177e4 LT	469	int pnp_register_driver(struct pnp_driver *drv);
	470	void pnp_unregister_driver(struct pnp_driver *drv);
	471
2a49b45c GH	472	#define dev_is_pnp(d) ((d)->bus == &pnp_bus_type)
2a49b45c GH	473
1da177e4 LT	474	#else
	475
	476	/* device management */
07d4e9af BH	477	static inline int pnp_device_attach(struct pnp_dev *pnp_dev) { return -ENODEV; }
07d4e9af BH	478	static inline void pnp_device_detach(struct pnp_dev *pnp_dev) { }
9dd78466	479
8f81dd14	480	#define pnp_platform_devices 0
1da177e4 LT	481
1da177e4 LT	482	/* multidevice card support */
07d4e9af BH	483	static inline struct pnp_dev pnp_request_card_device(struct pnp_card_link clink, const char id, struct pnp_dev from) { return NULL; }
	484	static inline void pnp_release_card_device(struct pnp_dev *dev) { }
	485	static inline int pnp_register_card_driver(struct pnp_card_driver *drv) { return -ENODEV; }
	486	static inline void pnp_unregister_card_driver(struct pnp_card_driver *drv) { }
1da177e4 LT	487
1da177e4 LT	488	/* resource management */
57fd51a8 BH	489	static inline int pnp_possible_config(struct pnp_dev *dev, int type,
	490	resource_size_t base,
	491	resource_size_t size) { return 0; }
07d4e9af	492	static inline int pnp_auto_config_dev(struct pnp_dev *dev) { return -ENODEV; }
07d4e9af BH	493	static inline int pnp_start_dev(struct pnp_dev *dev) { return -ENODEV; }
	494	static inline int pnp_stop_dev(struct pnp_dev *dev) { return -ENODEV; }
	495	static inline int pnp_activate_dev(struct pnp_dev *dev) { return -ENODEV; }
	496	static inline int pnp_disable_dev(struct pnp_dev *dev) { return -ENODEV; }
eeb6d1d6	497	static inline int pnp_range_reserved(resource_size_t start, resource_size_t end) { return 0; }
1da177e4 LT	498
1da177e4 LT	499	/* protocol helpers */
07d4e9af BH	500	static inline int pnp_is_active(struct pnp_dev *dev) { return 0; }
07d4e9af BH	501	static inline int compare_pnp_id(struct pnp_id pos, const char id) { return -ENODEV; }
07d4e9af BH	502	static inline int pnp_register_driver(struct pnp_driver *drv) { return -ENODEV; }
07d4e9af BH	503	static inline void pnp_unregister_driver(struct pnp_driver *drv) { }
1da177e4	504
2a49b45c GH	505	#define dev_is_pnp(d) false
2a49b45c GH	506
1da177e4 LT	507	#endif /* CONFIG_PNP */
1da177e4 LT	508
95c0fd45 PH	509	/**
	510	* module_pnp_driver() - Helper macro for registering a PnP driver
	511	* @__pnp_driver: pnp_driver struct
	512	*
	513	* Helper macro for PnP drivers which do not do anything special in module
	514	* init/exit. This eliminates a lot of boilerplate. Each module may only
	515	* use this macro once, and calling it replaces module_init() and module_exit()
	516	*/
	517	#define module_pnp_driver(__pnp_driver) \
	518	module_driver(__pnp_driver, pnp_register_driver, \
	519	pnp_unregister_driver)
	520
1da177e4	521	#endif /* _LINUX_PNP_H */