Initial import

1 files changed, 525 insertions, 0 deletions

diff --git a/include/linux/pnp.h b/include/linux/pnp.h
new file mode 100644
index 000000000..5df733b8f
--- /dev/null
+++ b/include/linux/pnp.h
@@ -0,0 +1,525 @@
+/*
+ * 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) \
+	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_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;
+#define pnp_device_is_pnpbios(dev) ((dev)->protocol == (&pnpbios_protocol))
+#else
+#define pnp_device_is_pnpbios(dev) 0
+#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 {
+	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) \
+	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);
+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);
+
+#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) { }
+
+#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 */