diff options
Diffstat (limited to 'ANDROID_3.4.5/include/linux/irqdomain.h')
| -rw-r--r-- | ANDROID_3.4.5/include/linux/irqdomain.h | 186 |
1 files changed, 0 insertions, 186 deletions
diff --git a/ANDROID_3.4.5/include/linux/irqdomain.h b/ANDROID_3.4.5/include/linux/irqdomain.h deleted file mode 100644 index c65740d7..00000000 --- a/ANDROID_3.4.5/include/linux/irqdomain.h +++ /dev/null @@ -1,186 +0,0 @@ -/* - * irq_domain - IRQ translation domains - * - * Translation infrastructure between hw and linux irq numbers. This is - * helpful for interrupt controllers to implement mapping between hardware - * irq numbers and the Linux irq number space. - * - * irq_domains also have a hook for translating device tree interrupt - * representation into a hardware irq number that can be mapped back to a - * Linux irq number without any extra platform support code. - * - * Interrupt controller "domain" data structure. This could be defined as a - * irq domain controller. That is, it handles the mapping between hardware - * and virtual interrupt numbers for a given interrupt domain. The domain - * structure is generally created by the PIC code for a given PIC instance - * (though a domain can cover more than one PIC if they have a flat number - * model). It's the domain callbacks that are responsible for setting the - * irq_chip on a given irq_desc after it's been mapped. - * - * The host code and data structures are agnostic to whether or not - * we use an open firmware device-tree. We do have references to struct - * device_node in two places: in irq_find_host() to find the host matching - * a given interrupt controller node, and of course as an argument to its - * counterpart domain->ops->match() callback. However, those are treated as - * generic pointers by the core and the fact that it's actually a device-node - * pointer is purely a convention between callers and implementation. This - * code could thus be used on other architectures by replacing those two - * by some sort of arch-specific void * "token" used to identify interrupt - * controllers. - */ - -#ifndef _LINUX_IRQDOMAIN_H -#define _LINUX_IRQDOMAIN_H - -#include <linux/types.h> -#include <linux/radix-tree.h> - -struct device_node; -struct irq_domain; -struct of_device_id; - -/* Number of irqs reserved for a legacy isa controller */ -#define NUM_ISA_INTERRUPTS 16 - -/** - * struct irq_domain_ops - Methods for irq_domain objects - * @match: Match an interrupt controller device node to a host, returns - * 1 on a match - * @map: Create or update a mapping between a virtual irq number and a hw - * irq number. This is called only once for a given mapping. - * @unmap: Dispose of such a mapping - * @xlate: Given a device tree node and interrupt specifier, decode - * the hardware irq number and linux irq type value. - * - * Functions below are provided by the driver and called whenever a new mapping - * is created or an old mapping is disposed. The driver can then proceed to - * whatever internal data structures management is required. It also needs - * to setup the irq_desc when returning from map(). - */ -struct irq_domain_ops { - int (*match)(struct irq_domain *d, struct device_node *node); - int (*map)(struct irq_domain *d, unsigned int virq, irq_hw_number_t hw); - void (*unmap)(struct irq_domain *d, unsigned int virq); - int (*xlate)(struct irq_domain *d, struct device_node *node, - const u32 *intspec, unsigned int intsize, - unsigned long *out_hwirq, unsigned int *out_type); -}; - -/** - * struct irq_domain - Hardware interrupt number translation object - * @link: Element in global irq_domain list. - * @revmap_type: Method used for reverse mapping hwirq numbers to linux irq. This - * will be one of the IRQ_DOMAIN_MAP_* values. - * @revmap_data: Revmap method specific data. - * @ops: pointer to irq_domain methods - * @host_data: private data pointer for use by owner. Not touched by irq_domain - * core code. - * @irq_base: Start of irq_desc range assigned to the irq_domain. The creator - * of the irq_domain is responsible for allocating the array of - * irq_desc structures. - * @nr_irq: Number of irqs managed by the irq domain - * @hwirq_base: Starting number for hwirqs managed by the irq domain - * @of_node: (optional) Pointer to device tree nodes associated with the - * irq_domain. Used when decoding device tree interrupt specifiers. - */ -struct irq_domain { - struct list_head link; - - /* type of reverse mapping_technique */ - unsigned int revmap_type; - union { - struct { - unsigned int size; - unsigned int first_irq; - irq_hw_number_t first_hwirq; - } legacy; - struct { - unsigned int size; - unsigned int *revmap; - } linear; - struct { - unsigned int max_irq; - } nomap; - struct radix_tree_root tree; - } revmap_data; - const struct irq_domain_ops *ops; - void *host_data; - irq_hw_number_t inval_irq; - - /* Optional device node pointer */ - struct device_node *of_node; -}; - -#ifdef CONFIG_IRQ_DOMAIN -struct irq_domain *irq_domain_add_legacy(struct device_node *of_node, - unsigned int size, - unsigned int first_irq, - irq_hw_number_t first_hwirq, - const struct irq_domain_ops *ops, - void *host_data); -struct irq_domain *irq_domain_add_linear(struct device_node *of_node, - unsigned int size, - const struct irq_domain_ops *ops, - void *host_data); -struct irq_domain *irq_domain_add_nomap(struct device_node *of_node, - unsigned int max_irq, - const struct irq_domain_ops *ops, - void *host_data); -struct irq_domain *irq_domain_add_tree(struct device_node *of_node, - const struct irq_domain_ops *ops, - void *host_data); - -extern struct irq_domain *irq_find_host(struct device_node *node); -extern void irq_set_default_host(struct irq_domain *host); - -static inline struct irq_domain *irq_domain_add_legacy_isa( - struct device_node *of_node, - const struct irq_domain_ops *ops, - void *host_data) -{ - return irq_domain_add_legacy(of_node, NUM_ISA_INTERRUPTS, 0, 0, ops, - host_data); -} -extern struct irq_domain *irq_find_host(struct device_node *node); -extern void irq_set_default_host(struct irq_domain *host); - - -extern unsigned int irq_create_mapping(struct irq_domain *host, - irq_hw_number_t hwirq); -extern void irq_dispose_mapping(unsigned int virq); -extern unsigned int irq_find_mapping(struct irq_domain *host, - irq_hw_number_t hwirq); -extern unsigned int irq_create_direct_mapping(struct irq_domain *host); -extern void irq_radix_revmap_insert(struct irq_domain *host, unsigned int virq, - irq_hw_number_t hwirq); -extern unsigned int irq_radix_revmap_lookup(struct irq_domain *host, - irq_hw_number_t hwirq); -extern unsigned int irq_linear_revmap(struct irq_domain *host, - irq_hw_number_t hwirq); - -extern const struct irq_domain_ops irq_domain_simple_ops; - -/* stock xlate functions */ -int irq_domain_xlate_onecell(struct irq_domain *d, struct device_node *ctrlr, - const u32 *intspec, unsigned int intsize, - irq_hw_number_t *out_hwirq, unsigned int *out_type); -int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr, - const u32 *intspec, unsigned int intsize, - irq_hw_number_t *out_hwirq, unsigned int *out_type); -int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr, - const u32 *intspec, unsigned int intsize, - irq_hw_number_t *out_hwirq, unsigned int *out_type); - -#if defined(CONFIG_OF_IRQ) -extern void irq_domain_generate_simple(const struct of_device_id *match, - u64 phys_base, unsigned int irq_start); -#else /* CONFIG_OF_IRQ */ -static inline void irq_domain_generate_simple(const struct of_device_id *match, - u64 phys_base, unsigned int irq_start) { } -#endif /* !CONFIG_OF_IRQ */ - -#else /* CONFIG_IRQ_DOMAIN */ -static inline void irq_dispose_mapping(unsigned int virq) { } -#endif /* !CONFIG_IRQ_DOMAIN */ - -#endif /* _LINUX_IRQDOMAIN_H */ |