/* SPDX-License-Identifier: GPL-2.0 */
/*
* 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 hooks for translating device tree or other
* firmware interrupt representations 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 use a fwnode_handle pointer to
* identify the domain. In some cases, and in order to preserve source
* code compatibility, this fwnode pointer is "upgraded" to a DT
* device_node. For those firmware infrastructures that do not provide
* a unique identifier for an interrupt controller, the irq_domain
* code offers a fwnode allocator.
*/
#ifndef _LINUX_IRQDOMAIN_H
#define _LINUX_IRQDOMAIN_H
#include <linux/types.h>
#include <linux/irqdomain_defs.h>
#include <linux/irqhandler.h>
#include <linux/of.h>
#include <linux/mutex.h>
#include <linux/radix-tree.h>
struct device_node;
struct fwnode_handle;
struct irq_domain;
struct irq_chip;
struct irq_data;
struct irq_desc;
struct cpumask;
struct seq_file;
struct irq_affinity_desc;
struct msi_parent_ops;
#define IRQ_DOMAIN_IRQ_SPEC_PARAMS 16
/**
* struct irq_fwspec - generic IRQ specifier structure
*
* @fwnode: Pointer to a firmware-specific descriptor
* @param_count: Number of device-specific parameters
* @param: Device-specific parameters
*
* This structure, directly modeled after of_phandle_args, is used to
* pass a device-specific description of an interrupt.
*/
struct irq_fwspec {
struct fwnode_handle *fwnode;
int param_count;
u32 param[IRQ_DOMAIN_IRQ_SPEC_PARAMS];
};
/* Conversion function from of_phandle_args fields to fwspec */
void of_phandle_args_to_fwspec(struct device_node *np, const u32 *args,
unsigned int count, struct irq_fwspec *fwspec);
/**
* struct irq_domain_ops - Methods for irq_domain objects
* @match: Match an interrupt controller device node to a host, returns
* 1 on a match
* @select: Match an interrupt controller fw specification. It is more generic
* than @match as it receives a complete struct irq_fwspec. Therefore,
* @select is preferred if provided. 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.
* @alloc: Allocate @nr_irqs interrupts starting from @virq.
* @free: Free @nr_irqs interrupts starting from @virq.
* @activate: Activate one interrupt in HW (@irqd). If @reserve is set, only
* reserve the vector. If unset, assign the vector (called from
* request_irq()).
* @deactivate: Disarm one interrupt (@irqd).
* @translate: Given @fwspec, decode the hardware irq number (@out_hwirq) and
* linux irq type value (@out_type). This is a generalised @xlate
* (over struct irq_fwspec) and is preferred if provided.
* @debug_show: For domains to show specific data for an interrupt in debugfs.
*
* 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,
enum irq_domain_bus_token bus_token);
int (*select)(struct irq_domain *d, struct irq_fwspec *fwspec,
enum irq_domain_bus_token bus_token);
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);
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
/* extended V2 interfaces to support hierarchy irq_domains */
int (*alloc)(struct irq_domain *d, unsigned int virq,
unsigned int nr_irqs, void *arg);
void (*free)(struct irq_domain *d, unsigned int virq,
unsigned int nr_irqs);
int (*activate)(struct irq_domain *d, struct irq_data *irqd, bool reserve);
void (*deactivate)(struct irq_domain *d, struct irq_data *irq_data);
int (*translate)(struct irq_domain *d, struct irq_fwspec *fwspec,
unsigned long *out_hwirq, unsigned int *out_type);
#endif
#ifdef CONFIG_GENERIC_IRQ_DEBUGFS
void (*debug_show)(struct seq_file *m, struct irq_domain *d,
struct irq_data *irqd, int ind);
#endif
};
extern const struct irq_domain_ops irq_generic_chip_ops;
struct irq_domain_chip_generic;
/**
* struct irq_domain - Hardware interrupt number translation object
* @link: Element in global irq_domain list.
* @name: Name of interrupt domain
* @ops: Pointer to irq_domain methods
* @host_data: Private data pointer for use by owner. Not touched by irq_domain
* core code.
* @flags: Per irq_domain flags
* @mapcount: The number of mapped interrupts
* @mutex: Domain lock, hierarchical domains use root domain's lock
* @root: Pointer to root domain, or containing structure if non-hierarchical
*
* Optional elements:
* @fwnode: Pointer to firmware node associated with the irq_domain. Pretty easy
* to swap it for the of_node via the irq_domain_get_of_node accessor
* @bus_token: @fwnode's device_node might be used for several irq domains. But
* in connection with @bus_token, the pair shall be unique in a
* system.
* @gc: Pointer to a list of generic chips. There is a helper function for
* setting up one or more generic chips for interrupt controllers
* drivers using the generic chip library which uses this pointer.
* @dev: Pointer to the device which instantiated the irqdomain
* With per device irq domains this is not necessarily the same
* as @pm_dev.
* @pm_dev: Pointer to a device that can be utilized for power management
* purposes related to the irq domain.
* @parent: Pointer to parent irq_domain to support hierarchy irq_domains
* @msi_parent_ops: Pointer to MSI parent domain methods for per device domain init
* @exit: Function called when the domain is destroyed
*
* Revmap data, used internally by the irq domain code:
* @hwirq_max: Top limit for the HW irq number. Especially to avoid
* conflicts/failures with reserved HW irqs. Can be ~0.
* @revmap_size: Size of the linear map table @revmap
* @revmap_tree: Radix map tree for hwirqs that don't fit in the linear map
* @revmap: Linear table of irq_data pointers
*/
struct irq_domain {
struct list_head link;
const char *name;
const struct irq_domain_ops *ops;
void *host_data;
unsigned int flags;
unsigned int mapcount;
struct mutex mutex;
struct irq_domain *root;
/* Optional data */
struct fwnode_handle *fwnode;
enum irq_domain_bus_token bus_token;
struct irq_domain_chip_generic *gc;
struct device *dev;
struct device *pm_dev;
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
struct irq_domain *parent;
#endif
#ifdef CONFIG_GENERIC_MSI_IRQ
const struct msi_parent_ops *msi_parent_ops;
#endif
void (*exit)(struct irq_domain *d);
/* reverse map data. The linear map gets appended to the irq_domain */
irq_hw_number_t hwirq_max;
unsigned int revmap_size;
struct radix_tree_root revmap_tree;
struct irq_data __rcu *revmap[] __counted_by(revmap_size);
};
/* Irq domain flags */
enum {
/* Irq domain is hierarchical */
IRQ_DOMAIN_FLAG_HIERARCHY = (1 << 0),
/* Irq domain name was allocated internally */
IRQ_DOMAIN_NAME_ALLOCATED = (1 << 1),
/* Irq domain is an IPI domain with virq per cpu */
IRQ_DOMAIN_FLAG_IPI_PER_CPU = (1 << 2),
/* Irq domain is an IPI domain with single virq */
IRQ_DOMAIN_FLAG_IPI_SINGLE = (1 << 3),
/* Irq domain implements MSIs */
IRQ_DOMAIN_FLAG_MSI = (1 << 4),
/*
* Irq domain implements isolated MSI, see msi_device_has_isolated_msi()
*/
IRQ_DOMAIN_FLAG_ISOLATED_MSI = (1 << 5),
/* Irq domain doesn't translate anything */
IRQ_DOMAIN_FLAG_NO_MAP = (1 << 6),
/* Irq domain is a MSI parent domain */
IRQ_DOMAIN_FLAG_MSI_PARENT = (1 << 8),
/* Irq domain is a MSI device domain */
IRQ_DOMAIN_FLAG_MSI_DEVICE = (1 << 9),
/* Irq domain must destroy generic chips when removed */
IRQ_DOMAIN_FLAG_DESTROY_GC = (1 << 10),
/*
* Flags starting from IRQ_DOMAIN_FLAG_NONCORE are reserved
* for implementation specific purposes and ignored by the
* core code.
*/
IRQ_DOMAIN_FLAG_NONCORE = (1 << 16),
};
static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d)
{
return to_of_node(d->fwnode);
}
static inline void irq_domain_set_pm_device(struct irq_domain *d,
struct device *dev)
{
if (d)
d->pm_dev = dev;
}
#ifdef CONFIG_IRQ_DOMAIN
struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id,
const char *name, phys_addr_t *pa);
enum {
IRQCHIP_FWNODE_REAL,
IRQCHIP_FWNODE_NAMED,
IRQCHIP_FWNODE_NAMED_ID,
};
static inline
struct fwnode_handle *irq_domain_alloc_named_fwnode(const char *name)
{
return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED, 0, name, NULL);
}
static inline
struct fwnode_handle *irq_domain_alloc_named_id_fwnode(const char *name, int id)
{
return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED_ID, id, name,
NULL);
}
static inline struct fwnode_handle *irq_domain_alloc_fwnode(phys_addr_t *pa)
{
return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_REAL, 0, NULL, pa);
}
void irq_domain_free_fwnode(struct fwnode_handle *fwnode);
struct irq_domain_chip_generic_info;
/**
* struct irq_domain_info - Domain information structure
* @fwnode: firmware node for the interrupt controller
* @domain_flags: Additional flags to add to the domain flags
* @size: Size of linear map; 0 for radix mapping only
* @hwirq_max: Maximum number of interrupts supported by controller
* @direct_max: Maximum value of direct maps;
* Use ~0 for no limit; 0 for no direct mapping
* @hwirq_base: The first hardware interrupt number (legacy domains only)
* @virq_base: The first Linux interrupt number for legacy domains to
* immediately associate the interrupts after domain creation
* @bus_token: Domain bus token
* @name_suffix: Optional name suffix to avoid collisions when multiple
* domains are added using same fwnode
* @ops: Domain operation callbacks
* @host_data: Controller private data pointer
* @dgc_info: Geneneric chip information structure pointer used to
* create generic chips for the domain if not NULL.
* @init: Function called when the domain is created.
* Allow to do some additional domain initialisation.
* @exit: Function called when the domain is destroyed.
* Allow to do some additional cleanup operation.
*/
struct irq_domain_info {
struct fwnode_handle *fwnode;
unsigned int domain_flags;
unsigned int size;
irq_hw_number_t hwirq_max;
int direct_max;
unsigned int hwirq_base;
unsigned int virq_base;
enum irq_domain_bus_token bus_token;
const char *name_suffix;
const struct irq_domain_ops *ops;
void *host_data;
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
/**
* @parent: Pointer to the parent irq domain used in a hierarchy domain
*/
struct irq_domain *parent;
#endif
struct irq_domain_chip_generic_info *dgc_info;
int (*init)(struct irq_domain *d);
void (*exit)(struct irq_domain *d);
};
struct irq_domain *irq_domain_instantiate(const struct irq_domain_info *info);
struct irq_domain *devm_irq_domain_instantiate(struct device *dev,
const struct irq_domain_info *info);
struct irq_domain *irq_domain_create_simple(struct fwnode_handle *fwnode,
unsigned int size,
unsigned int first_irq,
const struct irq_domain_ops *ops,
void *host_data);
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_create_legacy(struct fwnode_handle *fwnode,
unsigned int size,
unsigned int first_irq,
irq_hw_number_t first_hwirq,
const struct irq_domain_ops *ops,
void *host_data);
extern struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec,
enum irq_domain_bus_token bus_token);
extern void irq_set_default_host(struct irq_domain *host);
extern struct irq_domain *irq_get_default_host(void);
extern int irq_domain_alloc_descs(int virq, unsigned int nr_irqs,
irq_hw_number_t hwirq, int node,
const struct irq_affinity_desc *affinity);
static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node)
{
return node ? &node->fwnode : NULL;
}
extern const struct fwnode_operations irqchip_fwnode_ops;
static inline bool is_fwnode_irqchip(const struct fwnode_handle *fwnode)
{
return fwnode && fwnode->ops == &irqchip_fwnode_ops;
}
extern void irq_domain_update_bus_token(struct irq_domain *domain,
enum irq_domain_bus_token bus_token);
static inline
struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
enum irq_domain_bus_token bus_token)
{
struct irq_fwspec fwspec = {
.fwnode = fwnode,
};
return irq_find_matching_fwspec(&fwspec, bus_token);
}
static inline struct irq_domain *irq_find_matching_host(struct device_node *node,
enum irq_domain_bus_token bus_token)
{
return irq_find_matching_fwnode(of_node_to_fwnode(node), bus_token);
}
static inline struct irq_domain *irq_find_host(struct device_node *node)
{
struct irq_domain *d;
d = irq_find_matching_host(node, DOMAIN_BUS_WIRED);
if (!d)
d = irq_find_matching_host(node, DOMAIN_BUS_ANY);
return d;
}
static inline struct irq_domain *irq_domain_add_simple(struct device_node *of_node,
unsigned int size,
unsigned int first_irq,
const struct irq_domain_ops *ops,
void *host_data)
{
return irq_domain_create_simple(of_node_to_fwnode(of_node), size, first_irq, ops, host_data);
}
/**
* irq_domain_add_linear() - Allocate and register a linear revmap irq_domain.
* @of_node: pointer to interrupt controller's device tree node.
* @size: Number of interrupts in the domain.
* @ops: map/unmap domain callbacks
* @host_data: Controller private data pointer
*/
static inline 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_info info = {
.fwnode = of_node_to_fwnode(of_node),
.size = size,
.hwirq_max = size,
.ops = ops,
.host_data = host_data,
};
struct irq_domain *d;
d = irq_domain_instantiate(&info);
return IS_ERR(d) ? NULL : d;
}
#ifdef CONFIG_IRQ_DOMAIN_NOMAP
static inline 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_info info = {
.fwnode = of_node_to_fwnode(of_node),
.hwirq_max = max_irq,
.direct_max = max_irq,
.ops = ops,
.host_data = host_data,
};
struct irq_domain *d;
d = irq_domain_instantiate(&info);
return IS_ERR(d) ? NULL : d;
}
extern unsigned int irq_create_direct_mapping(struct irq_domain *host);
#endif
static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node,
const struct irq_domain_ops *ops,
void *host_data)
{
struct irq_domain_info info = {
.fwnode = of_node_to_fwnode(of_node),
.hwirq_max = ~0U,
.ops = ops,
.host_data = host_data,
};
struct irq_domain *d;
d = irq_domain_instantiate(&info);
return IS_ERR(d) ? NULL : d;
}
static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle *fwnode,
unsigned int size,
const struct irq_domain_ops *ops,
void *host_data)
{
struct irq_domain_info info = {
.fwnode = fwnode,
.size = size,
.hwirq_max = size,
.ops = ops,
.host_data = host_data,
};
struct irq_domain *d;
d = irq_domain_instantiate(&info);
return IS_ERR(d) ? NULL : d;
}
static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode,
const struct irq_domain_ops *ops,
void *host_data)
{
struct irq_domain_info info = {
.fwnode = fwnode,
.hwirq_max = ~0,
.ops = ops,
.host_data = host_data,
};
struct irq_domain *d;
d = irq_domain_instantiate(&info);
return IS_ERR(d) ? NULL : d;
}
extern void irq_domain_remove(struct irq_domain *host);
extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq,
irq_hw_number_t hwirq);
extern void irq_domain_associate_many(struct irq_domain *domain,
unsigned int irq_base,
irq_hw_number_t hwirq_base, int count);
extern unsigned int irq_create_mapping_affinity(struct irq_domain *host,
irq_hw_number_t hwirq,
const struct irq_affinity_desc *affinity);
extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec);
extern void irq_dispose_mapping(unsigned int virq);
static inline unsigned int irq_create_mapping(struct irq_domain *host,
irq_hw_number_t hwirq)
{
return irq_create_mapping_affinity(host, hwirq, NULL);
}
extern struct irq_desc *__irq_resolve_mapping(struct irq_domain *domain,
irq_hw_number_t hwirq,
unsigned int *irq);
static inline struct irq_desc *irq_resolve_mapping(struct irq_domain *domain,
irq_hw_number_t hwirq)
{
return __irq_resolve_mapping(domain, hwirq, NULL);
}
/**
* irq_find_mapping() - Find a linux irq from a hw irq number.
* @domain: domain owning this hardware interrupt
* @hwirq: hardware irq number in that domain space
*/
static inline unsigned int irq_find_mapping(struct irq_domain *domain,
irq_hw_number_t hwirq)
{
unsigned int irq;
if (__irq_resolve_mapping(domain, hwirq, &irq))
return irq;
return 0;
}
static inline unsigned int irq_linear_revmap(struct irq_domain *domain,
irq_hw_number_t hwirq)
{
return irq_find_mapping(domain, 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);
int irq_domain_translate_twocell(struct irq_domain *d,
struct irq_fwspec *fwspec,
unsigned long *out_hwirq,
unsigned int *out_type);
int irq_domain_translate_onecell(struct irq_domain *d,
struct irq_fwspec *fwspec,
unsigned long *out_hwirq,
unsigned int *out_type);
/* IPI functions */
int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest);
int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest);
/* V2 interfaces to support hierarchy IRQ domains. */
extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain,
unsigned int virq);
extern void irq_domain_set_info(struct irq_domain *domain, unsigned int virq,
irq_hw_number_t hwirq,
const struct irq_chip *chip,
void *chip_data, irq_flow_handler_t handler,
void *handler_data, const char *handler_name);
extern void irq_domain_reset_irq_data(struct irq_data *irq_data);
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
extern struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent,
unsigned int flags, unsigned int size,
struct fwnode_handle *fwnode,
const struct irq_domain_ops *ops, void *host_data);
static inline struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent,
unsigned int flags,
unsigned int size,
struct device_node *node,
const struct irq_domain_ops *ops,
void *host_data)
{
return irq_domain_create_hierarchy(parent, flags, size,
of_node_to_fwnode(node),
ops, host_data);
}
extern int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base,
unsigned int nr_irqs, int node, void *arg,
bool realloc,
const struct irq_affinity_desc *affinity);
extern void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs);
extern int irq_domain_activate_irq(struct irq_data *irq_data, bool early);
extern void irq_domain_deactivate_irq(struct irq_data *irq_data);
static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
unsigned int nr_irqs, int node, void *arg)
{
return __irq_domain_alloc_irqs(domain, -1, nr_irqs, node, arg, false,
NULL);
}
extern int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain,
unsigned int irq_base,
unsigned int nr_irqs, void *arg);
extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain,
unsigned int virq,
irq_hw_number_t hwirq,
const struct irq_chip *chip,
void *chip_data);
extern void irq_domain_free_irqs_common(struct irq_domain *domain,
unsigned int virq,
unsigned int nr_irqs);
extern void irq_domain_free_irqs_top(struct irq_domain *domain,
unsigned int virq, unsigned int nr_irqs);
extern int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg);
extern int irq_domain_pop_irq(struct irq_domain *domain, int virq);
extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain,
unsigned int irq_base,
unsigned int nr_irqs, void *arg);
extern void irq_domain_free_irqs_parent(struct irq_domain *domain,
unsigned int irq_base,
unsigned int nr_irqs);
extern int irq_domain_disconnect_hierarchy(struct irq_domain *domain,
unsigned int virq);
static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
{
return domain->flags & IRQ_DOMAIN_FLAG_HIERARCHY;
}
static inline bool irq_domain_is_ipi(struct irq_domain *domain)
{
return domain->flags &
(IRQ_DOMAIN_FLAG_IPI_PER_CPU | IRQ_DOMAIN_FLAG_IPI_SINGLE);
}
static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain)
{
return domain->flags & IRQ_DOMAIN_FLAG_IPI_PER_CPU;
}
static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
{
return domain->flags & IRQ_DOMAIN_FLAG_IPI_SINGLE;
}
static inline bool irq_domain_is_msi(struct irq_domain *domain)
{
return domain->flags & IRQ_DOMAIN_FLAG_MSI;
}
static inline bool irq_domain_is_msi_parent(struct irq_domain *domain)
{
return domain->flags & IRQ_DOMAIN_FLAG_MSI_PARENT;
}
static inline bool irq_domain_is_msi_device(struct irq_domain *domain)
{
return domain->flags & IRQ_DOMAIN_FLAG_MSI_DEVICE;
}
#else /* CONFIG_IRQ_DOMAIN_HIERARCHY */
static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
unsigned int nr_irqs, int node, void *arg)
{
return -1;
}
static inline void irq_domain_free_irqs(unsigned int virq,
unsigned int nr_irqs) { }
static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
{
return false;
}
static inline bool irq_domain_is_ipi(struct irq_domain *domain)
{
return false;
}
static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain)
{
return false;
}
static inline bool irq_domain_is_ipi_single(struct irq_domain *domain)
{
return false;
}
static inline bool irq_domain_is_msi(struct irq_domain *domain)
{
return false;
}
static inline bool irq_domain_is_msi_parent(struct irq_domain *domain)
{
return false;
}
static inline bool irq_domain_is_msi_device(struct irq_domain *domain)
{
return false;
}
#endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */
#ifdef CONFIG_GENERIC_MSI_IRQ
int msi_device_domain_alloc_wired(struct irq_domain *domain, unsigned int hwirq,
unsigned int type);
void msi_device_domain_free_wired(struct irq_domain *domain, unsigned int virq);
#else
static inline int msi_device_domain_alloc_wired(struct irq_domain *domain, unsigned int hwirq,
unsigned int type)
{
WARN_ON_ONCE(1);
return -EINVAL;
}
static inline void msi_device_domain_free_wired(struct irq_domain *domain, unsigned int virq)
{
WARN_ON_ONCE(1);
}
#endif
#else /* CONFIG_IRQ_DOMAIN */
static inline void irq_dispose_mapping(unsigned int virq) { }
static inline struct irq_domain *irq_find_matching_fwnode(
struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token)
{
return NULL;
}
#endif /* !CONFIG_IRQ_DOMAIN */
#endif /* _LINUX_IRQDOMAIN_H */
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