600 lines
20 KiB
C
600 lines
20 KiB
C
|
/* 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/irqhandler.h>
|
||
|
|
#include <linux/of.h>
|
||
|
|
#include <linux/mutex.h>
|
||
|
|
#include <linux/radix-tree.h>
|
||
|
|
|
||
|
|
struct device_node;
|
||
|
|
struct irq_domain;
|
||
|
|
struct of_device_id;
|
||
|
|
struct irq_chip;
|
||
|
|
struct irq_data;
|
||
|
|
struct cpumask;
|
||
|
|
struct seq_file;
|
||
|
|
struct irq_affinity_desc;
|
||
|
|
|
||
|
|
/* Number of irqs reserved for a legacy isa controller */
|
||
|
|
#define NUM_ISA_INTERRUPTS 16
|
||
|
|
|
||
|
|
#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];
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Should several domains have the same device node, but serve
|
||
|
|
* different purposes (for example one domain is for PCI/MSI, and the
|
||
|
|
* other for wired IRQs), they can be distinguished using a
|
||
|
|
* bus-specific token. Most domains are expected to only carry
|
||
|
|
* DOMAIN_BUS_ANY.
|
||
|
|
*/
|
||
|
|
enum irq_domain_bus_token {
|
||
|
|
DOMAIN_BUS_ANY = 0,
|
||
|
|
DOMAIN_BUS_WIRED,
|
||
|
|
DOMAIN_BUS_GENERIC_MSI,
|
||
|
|
DOMAIN_BUS_PCI_MSI,
|
||
|
|
DOMAIN_BUS_PLATFORM_MSI,
|
||
|
|
DOMAIN_BUS_NEXUS,
|
||
|
|
DOMAIN_BUS_IPI,
|
||
|
|
DOMAIN_BUS_FSL_MC_MSI,
|
||
|
|
DOMAIN_BUS_TI_SCI_INTA_MSI,
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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,
|
||
|
|
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 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: host per irq_domain flags
|
||
|
|
* @mapcount: The number of mapped interrupts
|
||
|
|
*
|
||
|
|
* 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
|
||
|
|
* @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.
|
||
|
|
* @parent: Pointer to parent irq_domain to support hierarchy irq_domains
|
||
|
|
* @debugfs_file: dentry for the domain debugfs file
|
||
|
|
*
|
||
|
|
* Revmap data, used internally by irq_domain
|
||
|
|
* @revmap_direct_max_irq: The largest hwirq that can be set for controllers that
|
||
|
|
* support direct mapping
|
||
|
|
* @revmap_size: Size of the linear map table @linear_revmap[]
|
||
|
|
* @revmap_tree: Radix map tree for hwirqs that don't fit in the linear map
|
||
|
|
* @linear_revmap: Linear table of hwirq->virq reverse mappings
|
||
|
|
*/
|
||
|
|
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;
|
||
|
|
|
||
|
|
/* Optional data */
|
||
|
|
struct fwnode_handle *fwnode;
|
||
|
|
enum irq_domain_bus_token bus_token;
|
||
|
|
struct irq_domain_chip_generic *gc;
|
||
|
|
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
|
||
|
|
struct irq_domain *parent;
|
||
|
|
#endif
|
||
|
|
#ifdef CONFIG_GENERIC_IRQ_DEBUGFS
|
||
|
|
struct dentry *debugfs_file;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* reverse map data. The linear map gets appended to the irq_domain */
|
||
|
|
irq_hw_number_t hwirq_max;
|
||
|
|
unsigned int revmap_direct_max_irq;
|
||
|
|
unsigned int revmap_size;
|
||
|
|
struct radix_tree_root revmap_tree;
|
||
|
|
struct mutex revmap_tree_mutex;
|
||
|
|
unsigned int linear_revmap[];
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Irq domain flags */
|
||
|
|
enum {
|
||
|
|
/* Irq domain is hierarchical */
|
||
|
|
IRQ_DOMAIN_FLAG_HIERARCHY = (1 << 0),
|
||
|
|
|
||
|
|
/* Irq domain name was allocated in __irq_domain_add() */
|
||
|
|
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 MSI remapping */
|
||
|
|
IRQ_DOMAIN_FLAG_MSI_REMAP = (1 << 5),
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Quirk to handle MSI implementations which do not provide
|
||
|
|
* masking. Currently known to affect x86, but partially
|
||
|
|
* handled in core code.
|
||
|
|
*/
|
||
|
|
IRQ_DOMAIN_MSI_NOMASK_QUIRK = (1 << 6),
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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);
|
||
|
|
}
|
||
|
|
|
||
|
|
#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 *__irq_domain_add(struct fwnode_handle *fwnode, int size,
|
||
|
|
irq_hw_number_t hwirq_max, int direct_max,
|
||
|
|
const struct irq_domain_ops *ops,
|
||
|
|
void *host_data);
|
||
|
|
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);
|
||
|
|
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);
|
||
|
|
extern struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec,
|
||
|
|
enum irq_domain_bus_token bus_token);
|
||
|
|
extern bool irq_domain_check_msi_remap(void);
|
||
|
|
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(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;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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)
|
||
|
|
{
|
||
|
|
return __irq_domain_add(of_node_to_fwnode(of_node), size, size, 0, ops, host_data);
|
||
|
|
}
|
||
|
|
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)
|
||
|
|
{
|
||
|
|
return __irq_domain_add(of_node_to_fwnode(of_node), 0, max_irq, max_irq, ops, host_data);
|
||
|
|
}
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node,
|
||
|
|
const struct irq_domain_ops *ops,
|
||
|
|
void *host_data)
|
||
|
|
{
|
||
|
|
return __irq_domain_add(of_node_to_fwnode(of_node), 0, ~0, 0, ops, host_data);
|
||
|
|
}
|
||
|
|
|
||
|
|
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)
|
||
|
|
{
|
||
|
|
return __irq_domain_add(fwnode, size, size, 0, ops, host_data);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode,
|
||
|
|
const struct irq_domain_ops *ops,
|
||
|
|
void *host_data)
|
||
|
|
{
|
||
|
|
return __irq_domain_add(fwnode, 0, ~0, 0, ops, host_data);
|
||
|
|
}
|
||
|
|
|
||
|
|
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 void irq_domain_disassociate(struct irq_domain *domain,
|
||
|
|
unsigned int irq);
|
||
|
|
|
||
|
|
extern unsigned int irq_create_mapping(struct irq_domain *host,
|
||
|
|
irq_hw_number_t hwirq);
|
||
|
|
extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec);
|
||
|
|
extern void irq_dispose_mapping(unsigned int virq);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* irq_linear_revmap() - Find a linux irq from a hw irq number.
|
||
|
|
* @domain: domain owning this hardware interrupt
|
||
|
|
* @hwirq: hardware irq number in that domain space
|
||
|
|
*
|
||
|
|
* This is a fast path alternative to irq_find_mapping() that can be
|
||
|
|
* called directly by irq controller code to save a handful of
|
||
|
|
* instructions. It is always safe to call, but won't find irqs mapped
|
||
|
|
* using the radix tree.
|
||
|
|
*/
|
||
|
|
static inline unsigned int irq_linear_revmap(struct irq_domain *domain,
|
||
|
|
irq_hw_number_t hwirq)
|
||
|
|
{
|
||
|
|
return hwirq < domain->revmap_size ? domain->linear_revmap[hwirq] : 0;
|
||
|
|
}
|
||
|
|
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 int irq_create_strict_mappings(struct irq_domain *domain,
|
||
|
|
unsigned int irq_base,
|
||
|
|
irq_hw_number_t hwirq_base, int count);
|
||
|
|
|
||
|
|
static inline int irq_create_identity_mapping(struct irq_domain *host,
|
||
|
|
irq_hw_number_t hwirq)
|
||
|
|
{
|
||
|
|
return irq_create_strict_mappings(host, hwirq, hwirq, 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
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);
|
||
|
|
|
||
|
|
/* 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, struct irq_chip *chip,
|
||
|
|
void *chip_data, irq_flow_handler_t handler,
|
||
|
|
void *handler_data, const char *handler_name);
|
||
|
|
#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,
|
||
|
|
struct irq_chip *chip,
|
||
|
|
void *chip_data);
|
||
|
|
extern void irq_domain_reset_irq_data(struct irq_data *irq_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);
|
||
|
|
|
||
|
|
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_remap(struct irq_domain *domain)
|
||
|
|
{
|
||
|
|
return domain->flags & IRQ_DOMAIN_FLAG_MSI_REMAP;
|
||
|
|
}
|
||
|
|
|
||
|
|
extern bool irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain);
|
||
|
|
|
||
|
|
#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_remap(struct irq_domain *domain)
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline bool
|
||
|
|
irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain)
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
#endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */
|
||
|
|
|
||
|
|
#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;
|
||
|
|
}
|
||
|
|
static inline bool irq_domain_check_msi_remap(void)
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
#endif /* !CONFIG_IRQ_DOMAIN */
|
||
|
|
|
||
|
|
#endif /* _LINUX_IRQDOMAIN_H */
|