diff options
Diffstat (limited to 'ANDROID_3.4.5/include/linux/irq.h')
| -rw-r--r-- | ANDROID_3.4.5/include/linux/irq.h | 752 |
1 files changed, 0 insertions, 752 deletions
diff --git a/ANDROID_3.4.5/include/linux/irq.h b/ANDROID_3.4.5/include/linux/irq.h deleted file mode 100644 index b27cfcfd..00000000 --- a/ANDROID_3.4.5/include/linux/irq.h +++ /dev/null @@ -1,752 +0,0 @@ -#ifndef _LINUX_IRQ_H -#define _LINUX_IRQ_H - -/* - * Please do not include this file in generic code. There is currently - * no requirement for any architecture to implement anything held - * within this file. - * - * Thanks. --rmk - */ - -#include <linux/smp.h> - -#ifndef CONFIG_S390 - -#include <linux/linkage.h> -#include <linux/cache.h> -#include <linux/spinlock.h> -#include <linux/cpumask.h> -#include <linux/gfp.h> -#include <linux/irqreturn.h> -#include <linux/irqnr.h> -#include <linux/errno.h> -#include <linux/topology.h> -#include <linux/wait.h> - -#include <asm/irq.h> -#include <asm/ptrace.h> -#include <asm/irq_regs.h> - -struct seq_file; -struct module; -struct irq_desc; -struct irq_data; -typedef void (*irq_flow_handler_t)(unsigned int irq, - struct irq_desc *desc); -typedef void (*irq_preflow_handler_t)(struct irq_data *data); - -/* - * IRQ line status. - * - * Bits 0-7 are the same as the IRQF_* bits in linux/interrupt.h - * - * IRQ_TYPE_NONE - default, unspecified type - * IRQ_TYPE_EDGE_RISING - rising edge triggered - * IRQ_TYPE_EDGE_FALLING - falling edge triggered - * IRQ_TYPE_EDGE_BOTH - rising and falling edge triggered - * IRQ_TYPE_LEVEL_HIGH - high level triggered - * IRQ_TYPE_LEVEL_LOW - low level triggered - * IRQ_TYPE_LEVEL_MASK - Mask to filter out the level bits - * IRQ_TYPE_SENSE_MASK - Mask for all the above bits - * IRQ_TYPE_DEFAULT - For use by some PICs to ask irq_set_type - * to setup the HW to a sane default (used - * by irqdomain map() callbacks to synchronize - * the HW state and SW flags for a newly - * allocated descriptor). - * - * IRQ_TYPE_PROBE - Special flag for probing in progress - * - * Bits which can be modified via irq_set/clear/modify_status_flags() - * IRQ_LEVEL - Interrupt is level type. Will be also - * updated in the code when the above trigger - * bits are modified via irq_set_irq_type() - * IRQ_PER_CPU - Mark an interrupt PER_CPU. Will protect - * it from affinity setting - * IRQ_NOPROBE - Interrupt cannot be probed by autoprobing - * IRQ_NOREQUEST - Interrupt cannot be requested via - * request_irq() - * IRQ_NOTHREAD - Interrupt cannot be threaded - * IRQ_NOAUTOEN - Interrupt is not automatically enabled in - * request/setup_irq() - * IRQ_NO_BALANCING - Interrupt cannot be balanced (affinity set) - * IRQ_MOVE_PCNTXT - Interrupt can be migrated from process context - * IRQ_NESTED_TRHEAD - Interrupt nests into another thread - * IRQ_PER_CPU_DEVID - Dev_id is a per-cpu variable - */ -enum { - IRQ_TYPE_NONE = 0x00000000, - IRQ_TYPE_EDGE_RISING = 0x00000001, - IRQ_TYPE_EDGE_FALLING = 0x00000002, - IRQ_TYPE_EDGE_BOTH = (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING), - IRQ_TYPE_LEVEL_HIGH = 0x00000004, - IRQ_TYPE_LEVEL_LOW = 0x00000008, - IRQ_TYPE_LEVEL_MASK = (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH), - IRQ_TYPE_SENSE_MASK = 0x0000000f, - IRQ_TYPE_DEFAULT = IRQ_TYPE_SENSE_MASK, - - IRQ_TYPE_PROBE = 0x00000010, - - IRQ_LEVEL = (1 << 8), - IRQ_PER_CPU = (1 << 9), - IRQ_NOPROBE = (1 << 10), - IRQ_NOREQUEST = (1 << 11), - IRQ_NOAUTOEN = (1 << 12), - IRQ_NO_BALANCING = (1 << 13), - IRQ_MOVE_PCNTXT = (1 << 14), - IRQ_NESTED_THREAD = (1 << 15), - IRQ_NOTHREAD = (1 << 16), - IRQ_PER_CPU_DEVID = (1 << 17), -}; - -#define IRQF_MODIFY_MASK \ - (IRQ_TYPE_SENSE_MASK | IRQ_NOPROBE | IRQ_NOREQUEST | \ - IRQ_NOAUTOEN | IRQ_MOVE_PCNTXT | IRQ_LEVEL | IRQ_NO_BALANCING | \ - IRQ_PER_CPU | IRQ_NESTED_THREAD | IRQ_NOTHREAD | IRQ_PER_CPU_DEVID) - -#define IRQ_NO_BALANCING_MASK (IRQ_PER_CPU | IRQ_NO_BALANCING) - -/* - * Return value for chip->irq_set_affinity() - * - * IRQ_SET_MASK_OK - OK, core updates irq_data.affinity - * IRQ_SET_MASK_NOCPY - OK, chip did update irq_data.affinity - */ -enum { - IRQ_SET_MASK_OK = 0, - IRQ_SET_MASK_OK_NOCOPY, -}; - -struct msi_desc; -struct irq_domain; - -/** - * struct irq_data - per irq and irq chip data passed down to chip functions - * @irq: interrupt number - * @hwirq: hardware interrupt number, local to the interrupt domain - * @node: node index useful for balancing - * @state_use_accessors: status information for irq chip functions. - * Use accessor functions to deal with it - * @chip: low level interrupt hardware access - * @domain: Interrupt translation domain; responsible for mapping - * between hwirq number and linux irq number. - * @handler_data: per-IRQ data for the irq_chip methods - * @chip_data: platform-specific per-chip private data for the chip - * methods, to allow shared chip implementations - * @msi_desc: MSI descriptor - * @affinity: IRQ affinity on SMP - * - * The fields here need to overlay the ones in irq_desc until we - * cleaned up the direct references and switched everything over to - * irq_data. - */ -struct irq_data { - unsigned int irq; - unsigned long hwirq; - unsigned int node; - unsigned int state_use_accessors; - struct irq_chip *chip; - struct irq_domain *domain; - void *handler_data; - void *chip_data; - struct msi_desc *msi_desc; -#ifdef CONFIG_SMP - cpumask_var_t affinity; -#endif -}; - -/* - * Bit masks for irq_data.state - * - * IRQD_TRIGGER_MASK - Mask for the trigger type bits - * IRQD_SETAFFINITY_PENDING - Affinity setting is pending - * IRQD_NO_BALANCING - Balancing disabled for this IRQ - * IRQD_PER_CPU - Interrupt is per cpu - * IRQD_AFFINITY_SET - Interrupt affinity was set - * IRQD_LEVEL - Interrupt is level triggered - * IRQD_WAKEUP_STATE - Interrupt is configured for wakeup - * from suspend - * IRDQ_MOVE_PCNTXT - Interrupt can be moved in process - * context - * IRQD_IRQ_DISABLED - Disabled state of the interrupt - * IRQD_IRQ_MASKED - Masked state of the interrupt - * IRQD_IRQ_INPROGRESS - In progress state of the interrupt - */ -enum { - IRQD_TRIGGER_MASK = 0xf, - IRQD_SETAFFINITY_PENDING = (1 << 8), - IRQD_NO_BALANCING = (1 << 10), - IRQD_PER_CPU = (1 << 11), - IRQD_AFFINITY_SET = (1 << 12), - IRQD_LEVEL = (1 << 13), - IRQD_WAKEUP_STATE = (1 << 14), - IRQD_MOVE_PCNTXT = (1 << 15), - IRQD_IRQ_DISABLED = (1 << 16), - IRQD_IRQ_MASKED = (1 << 17), - IRQD_IRQ_INPROGRESS = (1 << 18), -}; - -static inline bool irqd_is_setaffinity_pending(struct irq_data *d) -{ - return d->state_use_accessors & IRQD_SETAFFINITY_PENDING; -} - -static inline bool irqd_is_per_cpu(struct irq_data *d) -{ - return d->state_use_accessors & IRQD_PER_CPU; -} - -static inline bool irqd_can_balance(struct irq_data *d) -{ - return !(d->state_use_accessors & (IRQD_PER_CPU | IRQD_NO_BALANCING)); -} - -static inline bool irqd_affinity_was_set(struct irq_data *d) -{ - return d->state_use_accessors & IRQD_AFFINITY_SET; -} - -static inline void irqd_mark_affinity_was_set(struct irq_data *d) -{ - d->state_use_accessors |= IRQD_AFFINITY_SET; -} - -static inline u32 irqd_get_trigger_type(struct irq_data *d) -{ - return d->state_use_accessors & IRQD_TRIGGER_MASK; -} - -/* - * Must only be called inside irq_chip.irq_set_type() functions. - */ -static inline void irqd_set_trigger_type(struct irq_data *d, u32 type) -{ - d->state_use_accessors &= ~IRQD_TRIGGER_MASK; - d->state_use_accessors |= type & IRQD_TRIGGER_MASK; -} - -static inline bool irqd_is_level_type(struct irq_data *d) -{ - return d->state_use_accessors & IRQD_LEVEL; -} - -static inline bool irqd_is_wakeup_set(struct irq_data *d) -{ - return d->state_use_accessors & IRQD_WAKEUP_STATE; -} - -static inline bool irqd_can_move_in_process_context(struct irq_data *d) -{ - return d->state_use_accessors & IRQD_MOVE_PCNTXT; -} - -static inline bool irqd_irq_disabled(struct irq_data *d) -{ - return d->state_use_accessors & IRQD_IRQ_DISABLED; -} - -static inline bool irqd_irq_masked(struct irq_data *d) -{ - return d->state_use_accessors & IRQD_IRQ_MASKED; -} - -static inline bool irqd_irq_inprogress(struct irq_data *d) -{ - return d->state_use_accessors & IRQD_IRQ_INPROGRESS; -} - -/* - * Functions for chained handlers which can be enabled/disabled by the - * standard disable_irq/enable_irq calls. Must be called with - * irq_desc->lock held. - */ -static inline void irqd_set_chained_irq_inprogress(struct irq_data *d) -{ - d->state_use_accessors |= IRQD_IRQ_INPROGRESS; -} - -static inline void irqd_clr_chained_irq_inprogress(struct irq_data *d) -{ - d->state_use_accessors &= ~IRQD_IRQ_INPROGRESS; -} - -static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d) -{ - return d->hwirq; -} - -/** - * struct irq_chip - hardware interrupt chip descriptor - * - * @name: name for /proc/interrupts - * @irq_startup: start up the interrupt (defaults to ->enable if NULL) - * @irq_shutdown: shut down the interrupt (defaults to ->disable if NULL) - * @irq_enable: enable the interrupt (defaults to chip->unmask if NULL) - * @irq_disable: disable the interrupt - * @irq_ack: start of a new interrupt - * @irq_mask: mask an interrupt source - * @irq_mask_ack: ack and mask an interrupt source - * @irq_unmask: unmask an interrupt source - * @irq_eoi: end of interrupt - * @irq_set_affinity: set the CPU affinity on SMP machines - * @irq_retrigger: resend an IRQ to the CPU - * @irq_set_type: set the flow type (IRQ_TYPE_LEVEL/etc.) of an IRQ - * @irq_set_wake: enable/disable power-management wake-on of an IRQ - * @irq_bus_lock: function to lock access to slow bus (i2c) chips - * @irq_bus_sync_unlock:function to sync and unlock slow bus (i2c) chips - * @irq_cpu_online: configure an interrupt source for a secondary CPU - * @irq_cpu_offline: un-configure an interrupt source for a secondary CPU - * @irq_suspend: function called from core code on suspend once per chip - * @irq_resume: function called from core code on resume once per chip - * @irq_pm_shutdown: function called from core code on shutdown once per chip - * @irq_print_chip: optional to print special chip info in show_interrupts - * @flags: chip specific flags - * - * @release: release function solely used by UML - */ -struct irq_chip { - const char *name; - unsigned int (*irq_startup)(struct irq_data *data); - void (*irq_shutdown)(struct irq_data *data); - void (*irq_enable)(struct irq_data *data); - void (*irq_disable)(struct irq_data *data); - - void (*irq_ack)(struct irq_data *data); - void (*irq_mask)(struct irq_data *data); - void (*irq_mask_ack)(struct irq_data *data); - void (*irq_unmask)(struct irq_data *data); - void (*irq_eoi)(struct irq_data *data); - - int (*irq_set_affinity)(struct irq_data *data, const struct cpumask *dest, bool force); - int (*irq_retrigger)(struct irq_data *data); - int (*irq_set_type)(struct irq_data *data, unsigned int flow_type); - int (*irq_set_wake)(struct irq_data *data, unsigned int on); - - void (*irq_bus_lock)(struct irq_data *data); - void (*irq_bus_sync_unlock)(struct irq_data *data); - - void (*irq_cpu_online)(struct irq_data *data); - void (*irq_cpu_offline)(struct irq_data *data); - - void (*irq_suspend)(struct irq_data *data); - void (*irq_resume)(struct irq_data *data); - void (*irq_pm_shutdown)(struct irq_data *data); - - void (*irq_print_chip)(struct irq_data *data, struct seq_file *p); - - unsigned long flags; - - /* Currently used only by UML, might disappear one day.*/ -#ifdef CONFIG_IRQ_RELEASE_METHOD - void (*release)(unsigned int irq, void *dev_id); -#endif -}; - -/* - * irq_chip specific flags - * - * IRQCHIP_SET_TYPE_MASKED: Mask before calling chip.irq_set_type() - * IRQCHIP_EOI_IF_HANDLED: Only issue irq_eoi() when irq was handled - * IRQCHIP_MASK_ON_SUSPEND: Mask non wake irqs in the suspend path - * IRQCHIP_ONOFFLINE_ENABLED: Only call irq_on/off_line callbacks - * when irq enabled - * IRQCHIP_SKIP_SET_WAKE: Skip chip.irq_set_wake(), for this irq chip - */ -enum { - IRQCHIP_SET_TYPE_MASKED = (1 << 0), - IRQCHIP_EOI_IF_HANDLED = (1 << 1), - IRQCHIP_MASK_ON_SUSPEND = (1 << 2), - IRQCHIP_ONOFFLINE_ENABLED = (1 << 3), - IRQCHIP_SKIP_SET_WAKE = (1 << 4), -}; - -/* This include will go away once we isolated irq_desc usage to core code */ -#include <linux/irqdesc.h> - -/* - * Pick up the arch-dependent methods: - */ -#include <asm/hw_irq.h> - -#ifndef NR_IRQS_LEGACY -# define NR_IRQS_LEGACY 0 -#endif - -#ifndef ARCH_IRQ_INIT_FLAGS -# define ARCH_IRQ_INIT_FLAGS 0 -#endif - -#define IRQ_DEFAULT_INIT_FLAGS ARCH_IRQ_INIT_FLAGS - -struct irqaction; -extern int setup_irq(unsigned int irq, struct irqaction *new); -extern void remove_irq(unsigned int irq, struct irqaction *act); -extern int setup_percpu_irq(unsigned int irq, struct irqaction *new); -extern void remove_percpu_irq(unsigned int irq, struct irqaction *act); - -extern void irq_cpu_online(void); -extern void irq_cpu_offline(void); -extern int __irq_set_affinity_locked(struct irq_data *data, const struct cpumask *cpumask); - -#ifdef CONFIG_GENERIC_HARDIRQS - -#if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_PENDING_IRQ) -void irq_move_irq(struct irq_data *data); -void irq_move_masked_irq(struct irq_data *data); -#else -static inline void irq_move_irq(struct irq_data *data) { } -static inline void irq_move_masked_irq(struct irq_data *data) { } -#endif - -extern int no_irq_affinity; - -/* - * Built-in IRQ handlers for various IRQ types, - * callable via desc->handle_irq() - */ -extern void handle_level_irq(unsigned int irq, struct irq_desc *desc); -extern void handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc); -extern void handle_edge_irq(unsigned int irq, struct irq_desc *desc); -extern void handle_edge_eoi_irq(unsigned int irq, struct irq_desc *desc); -extern void handle_simple_irq(unsigned int irq, struct irq_desc *desc); -extern void handle_percpu_irq(unsigned int irq, struct irq_desc *desc); -extern void handle_percpu_devid_irq(unsigned int irq, struct irq_desc *desc); -extern void handle_bad_irq(unsigned int irq, struct irq_desc *desc); -extern void handle_nested_irq(unsigned int irq); - -/* Handling of unhandled and spurious interrupts: */ -extern void note_interrupt(unsigned int irq, struct irq_desc *desc, - irqreturn_t action_ret); - - -/* Enable/disable irq debugging output: */ -extern int noirqdebug_setup(char *str); - -/* Checks whether the interrupt can be requested by request_irq(): */ -extern int can_request_irq(unsigned int irq, unsigned long irqflags); - -/* Dummy irq-chip implementations: */ -extern struct irq_chip no_irq_chip; -extern struct irq_chip dummy_irq_chip; - -extern void -irq_set_chip_and_handler_name(unsigned int irq, struct irq_chip *chip, - irq_flow_handler_t handle, const char *name); - -static inline void irq_set_chip_and_handler(unsigned int irq, struct irq_chip *chip, - irq_flow_handler_t handle) -{ - irq_set_chip_and_handler_name(irq, chip, handle, NULL); -} - -extern int irq_set_percpu_devid(unsigned int irq); - -extern void -__irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, - const char *name); - -static inline void -irq_set_handler(unsigned int irq, irq_flow_handler_t handle) -{ - __irq_set_handler(irq, handle, 0, NULL); -} - -/* - * Set a highlevel chained flow handler for a given IRQ. - * (a chained handler is automatically enabled and set to - * IRQ_NOREQUEST, IRQ_NOPROBE, and IRQ_NOTHREAD) - */ -static inline void -irq_set_chained_handler(unsigned int irq, irq_flow_handler_t handle) -{ - __irq_set_handler(irq, handle, 1, NULL); -} - -void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set); - -static inline void irq_set_status_flags(unsigned int irq, unsigned long set) -{ - irq_modify_status(irq, 0, set); -} - -static inline void irq_clear_status_flags(unsigned int irq, unsigned long clr) -{ - irq_modify_status(irq, clr, 0); -} - -static inline void irq_set_noprobe(unsigned int irq) -{ - irq_modify_status(irq, 0, IRQ_NOPROBE); -} - -static inline void irq_set_probe(unsigned int irq) -{ - irq_modify_status(irq, IRQ_NOPROBE, 0); -} - -static inline void irq_set_nothread(unsigned int irq) -{ - irq_modify_status(irq, 0, IRQ_NOTHREAD); -} - -static inline void irq_set_thread(unsigned int irq) -{ - irq_modify_status(irq, IRQ_NOTHREAD, 0); -} - -static inline void irq_set_nested_thread(unsigned int irq, bool nest) -{ - if (nest) - irq_set_status_flags(irq, IRQ_NESTED_THREAD); - else - irq_clear_status_flags(irq, IRQ_NESTED_THREAD); -} - -static inline void irq_set_percpu_devid_flags(unsigned int irq) -{ - irq_set_status_flags(irq, - IRQ_NOAUTOEN | IRQ_PER_CPU | IRQ_NOTHREAD | - IRQ_NOPROBE | IRQ_PER_CPU_DEVID); -} - -/* Handle dynamic irq creation and destruction */ -extern unsigned int create_irq_nr(unsigned int irq_want, int node); -extern int create_irq(void); -extern void destroy_irq(unsigned int irq); - -/* - * Dynamic irq helper functions. Obsolete. Use irq_alloc_desc* and - * irq_free_desc instead. - */ -extern void dynamic_irq_cleanup(unsigned int irq); -static inline void dynamic_irq_init(unsigned int irq) -{ - dynamic_irq_cleanup(irq); -} - -/* Set/get chip/data for an IRQ: */ -extern int irq_set_chip(unsigned int irq, struct irq_chip *chip); -extern int irq_set_handler_data(unsigned int irq, void *data); -extern int irq_set_chip_data(unsigned int irq, void *data); -extern int irq_set_irq_type(unsigned int irq, unsigned int type); -extern int irq_set_msi_desc(unsigned int irq, struct msi_desc *entry); -extern struct irq_data *irq_get_irq_data(unsigned int irq); - -static inline struct irq_chip *irq_get_chip(unsigned int irq) -{ - struct irq_data *d = irq_get_irq_data(irq); - return d ? d->chip : NULL; -} - -static inline struct irq_chip *irq_data_get_irq_chip(struct irq_data *d) -{ - return d->chip; -} - -static inline void *irq_get_chip_data(unsigned int irq) -{ - struct irq_data *d = irq_get_irq_data(irq); - return d ? d->chip_data : NULL; -} - -static inline void *irq_data_get_irq_chip_data(struct irq_data *d) -{ - return d->chip_data; -} - -static inline void *irq_get_handler_data(unsigned int irq) -{ - struct irq_data *d = irq_get_irq_data(irq); - return d ? d->handler_data : NULL; -} - -static inline void *irq_data_get_irq_handler_data(struct irq_data *d) -{ - return d->handler_data; -} - -static inline struct msi_desc *irq_get_msi_desc(unsigned int irq) -{ - struct irq_data *d = irq_get_irq_data(irq); - return d ? d->msi_desc : NULL; -} - -static inline struct msi_desc *irq_data_get_msi(struct irq_data *d) -{ - return d->msi_desc; -} - -int __irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node, - struct module *owner); - -/* use macros to avoid needing export.h for THIS_MODULE */ -#define irq_alloc_descs(irq, from, cnt, node) \ - __irq_alloc_descs(irq, from, cnt, node, THIS_MODULE) - -#define irq_alloc_desc(node) \ - irq_alloc_descs(-1, 0, 1, node) - -#define irq_alloc_desc_at(at, node) \ - irq_alloc_descs(at, at, 1, node) - -#define irq_alloc_desc_from(from, node) \ - irq_alloc_descs(-1, from, 1, node) - -void irq_free_descs(unsigned int irq, unsigned int cnt); -int irq_reserve_irqs(unsigned int from, unsigned int cnt); - -static inline void irq_free_desc(unsigned int irq) -{ - irq_free_descs(irq, 1); -} - -static inline int irq_reserve_irq(unsigned int irq) -{ - return irq_reserve_irqs(irq, 1); -} - -#ifndef irq_reg_writel -# define irq_reg_writel(val, addr) writel(val, addr) -#endif -#ifndef irq_reg_readl -# define irq_reg_readl(addr) readl(addr) -#endif - -/** - * struct irq_chip_regs - register offsets for struct irq_gci - * @enable: Enable register offset to reg_base - * @disable: Disable register offset to reg_base - * @mask: Mask register offset to reg_base - * @ack: Ack register offset to reg_base - * @eoi: Eoi register offset to reg_base - * @type: Type configuration register offset to reg_base - * @polarity: Polarity configuration register offset to reg_base - */ -struct irq_chip_regs { - unsigned long enable; - unsigned long disable; - unsigned long mask; - unsigned long ack; - unsigned long eoi; - unsigned long type; - unsigned long polarity; -}; - -/** - * struct irq_chip_type - Generic interrupt chip instance for a flow type - * @chip: The real interrupt chip which provides the callbacks - * @regs: Register offsets for this chip - * @handler: Flow handler associated with this chip - * @type: Chip can handle these flow types - * - * A irq_generic_chip can have several instances of irq_chip_type when - * it requires different functions and register offsets for different - * flow types. - */ -struct irq_chip_type { - struct irq_chip chip; - struct irq_chip_regs regs; - irq_flow_handler_t handler; - u32 type; -}; - -/** - * struct irq_chip_generic - Generic irq chip data structure - * @lock: Lock to protect register and cache data access - * @reg_base: Register base address (virtual) - * @irq_base: Interrupt base nr for this chip - * @irq_cnt: Number of interrupts handled by this chip - * @mask_cache: Cached mask register - * @type_cache: Cached type register - * @polarity_cache: Cached polarity register - * @wake_enabled: Interrupt can wakeup from suspend - * @wake_active: Interrupt is marked as an wakeup from suspend source - * @num_ct: Number of available irq_chip_type instances (usually 1) - * @private: Private data for non generic chip callbacks - * @list: List head for keeping track of instances - * @chip_types: Array of interrupt irq_chip_types - * - * Note, that irq_chip_generic can have multiple irq_chip_type - * implementations which can be associated to a particular irq line of - * an irq_chip_generic instance. That allows to share and protect - * state in an irq_chip_generic instance when we need to implement - * different flow mechanisms (level/edge) for it. - */ -struct irq_chip_generic { - raw_spinlock_t lock; - void __iomem *reg_base; - unsigned int irq_base; - unsigned int irq_cnt; - u32 mask_cache; - u32 type_cache; - u32 polarity_cache; - u32 wake_enabled; - u32 wake_active; - unsigned int num_ct; - void *private; - struct list_head list; - struct irq_chip_type chip_types[0]; -}; - -/** - * enum irq_gc_flags - Initialization flags for generic irq chips - * @IRQ_GC_INIT_MASK_CACHE: Initialize the mask_cache by reading mask reg - * @IRQ_GC_INIT_NESTED_LOCK: Set the lock class of the irqs to nested for - * irq chips which need to call irq_set_wake() on - * the parent irq. Usually GPIO implementations - */ -enum irq_gc_flags { - IRQ_GC_INIT_MASK_CACHE = 1 << 0, - IRQ_GC_INIT_NESTED_LOCK = 1 << 1, -}; - -/* Generic chip callback functions */ -void irq_gc_noop(struct irq_data *d); -void irq_gc_mask_disable_reg(struct irq_data *d); -void irq_gc_mask_set_bit(struct irq_data *d); -void irq_gc_mask_clr_bit(struct irq_data *d); -void irq_gc_unmask_enable_reg(struct irq_data *d); -void irq_gc_ack_set_bit(struct irq_data *d); -void irq_gc_ack_clr_bit(struct irq_data *d); -void irq_gc_mask_disable_reg_and_ack(struct irq_data *d); -void irq_gc_eoi(struct irq_data *d); -int irq_gc_set_wake(struct irq_data *d, unsigned int on); - -/* Setup functions for irq_chip_generic */ -struct irq_chip_generic * -irq_alloc_generic_chip(const char *name, int nr_ct, unsigned int irq_base, - void __iomem *reg_base, irq_flow_handler_t handler); -void irq_setup_generic_chip(struct irq_chip_generic *gc, u32 msk, - enum irq_gc_flags flags, unsigned int clr, - unsigned int set); -int irq_setup_alt_chip(struct irq_data *d, unsigned int type); -void irq_remove_generic_chip(struct irq_chip_generic *gc, u32 msk, - unsigned int clr, unsigned int set); - -static inline struct irq_chip_type *irq_data_get_chip_type(struct irq_data *d) -{ - return container_of(d->chip, struct irq_chip_type, chip); -} - -#define IRQ_MSK(n) (u32)((n) < 32 ? ((1 << (n)) - 1) : UINT_MAX) - -#ifdef CONFIG_SMP -static inline void irq_gc_lock(struct irq_chip_generic *gc) -{ - raw_spin_lock(&gc->lock); -} - -static inline void irq_gc_unlock(struct irq_chip_generic *gc) -{ - raw_spin_unlock(&gc->lock); -} -#else -static inline void irq_gc_lock(struct irq_chip_generic *gc) { } -static inline void irq_gc_unlock(struct irq_chip_generic *gc) { } -#endif - -#endif /* CONFIG_GENERIC_HARDIRQS */ - -#endif /* !CONFIG_S390 */ - -#endif /* _LINUX_IRQ_H */ |