489 lines
14 KiB
C
489 lines
14 KiB
C
/*
|
|
* 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>
|
|
|
|
#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 res->end - res->start + 1;
|
|
}
|
|
|
|
|
|
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) \
|
|
for((card) = global_to_pnp_card(pnp_cards.next); \
|
|
(card) != global_to_pnp_card(&pnp_cards); \
|
|
(card) = global_to_pnp_card((card)->global_list.next))
|
|
|
|
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) \
|
|
for((dev) = global_to_pnp_dev(pnp_global.next); \
|
|
(dev) != global_to_pnp_dev(&pnp_global); \
|
|
(dev) = global_to_pnp_dev((dev)->global_list.next))
|
|
#define card_for_each_dev(card,dev) \
|
|
for((dev) = card_to_pnp_dev((card)->devices.next); \
|
|
(dev) != card_to_pnp_dev(&(card)->devices); \
|
|
(dev) = card_to_pnp_dev((dev)->card_list.next))
|
|
#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_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))
|
|
#define pnp_can_configure(dev) ((!(dev)->active) && \
|
|
((dev)->capabilities & PNP_CONFIGURABLE))
|
|
|
|
#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;
|
|
#define pnp_device_is_pnpbios(dev) ((dev)->protocol == (&pnpbios_protocol))
|
|
#else
|
|
#define pnp_device_is_pnpbios(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 {
|
|
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);
|
|
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 */
|
|
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) \
|
|
for((card) = protocol_to_pnp_card((protocol)->cards.next); \
|
|
(card) != protocol_to_pnp_card(&(protocol)->cards); \
|
|
(card) = protocol_to_pnp_card((card)->protocol_list.next))
|
|
#define protocol_for_each_dev(protocol,dev) \
|
|
for((dev) = protocol_to_pnp_dev((protocol)->devices.next); \
|
|
(dev) != protocol_to_pnp_dev(&(protocol)->devices); \
|
|
(dev) = protocol_to_pnp_dev((dev)->protocol_list.next))
|
|
|
|
extern 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);
|
|
|
|
/* 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);
|
|
|
|
#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; }
|
|
|
|
/* 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) { }
|
|
|
|
#endif /* CONFIG_PNP */
|
|
|
|
#endif /* _LINUX_PNP_H */
|