v4.19.13 snapshot.
diff --git a/include/linux/pnp.h b/include/linux/pnp.h
new file mode 100644
index 0000000..3b12fd2
--- /dev/null
+++ b/include/linux/pnp.h
@@ -0,0 +1,528 @@
+/* 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) \
+ 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;
+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 {
+ 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 */