summaryrefslogtreecommitdiff
path: root/include/linux/irq.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/irq.h')
-rw-r--r--include/linux/irq.h191
1 files changed, 59 insertions, 132 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 1d3577f30d45..09a308072f56 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -28,6 +28,7 @@
#include <asm/ptrace.h>
#include <asm/irq_regs.h>
+struct seq_file;
struct irq_desc;
struct irq_data;
typedef void (*irq_flow_handler_t)(unsigned int irq,
@@ -63,13 +64,6 @@ typedef void (*irq_preflow_handler_t)(struct irq_data *data);
* 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
- *
- * Deprecated bits. They are kept updated as long as
- * CONFIG_GENERIC_HARDIRQS_NO_COMPAT is not set. Will go away soon. These bits
- * are internal state of the core code and if you really need to acces
- * them then talk to the genirq maintainer instead of hacking
- * something weird.
- *
*/
enum {
IRQ_TYPE_NONE = 0x00000000,
@@ -91,18 +85,6 @@ enum {
IRQ_NO_BALANCING = (1 << 13),
IRQ_MOVE_PCNTXT = (1 << 14),
IRQ_NESTED_THREAD = (1 << 15),
-
-#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT
- IRQ_INPROGRESS = (1 << 16),
- IRQ_REPLAY = (1 << 17),
- IRQ_WAITING = (1 << 18),
- IRQ_DISABLED = (1 << 19),
- IRQ_PENDING = (1 << 20),
- IRQ_MASKED = (1 << 21),
- IRQ_MOVE_PENDING = (1 << 22),
- IRQ_AFFINITY_SET = (1 << 23),
- IRQ_WAKEUP = (1 << 24),
-#endif
};
#define IRQF_MODIFY_MASK \
@@ -134,7 +116,7 @@ struct msi_desc;
* struct irq_data - per irq and irq chip data passed down to chip functions
* @irq: interrupt number
* @node: node index useful for balancing
- * @state_use_accessor: status information for irq chip functions.
+ * @state_use_accessors: status information for irq chip functions.
* Use accessor functions to deal with it
* @chip: low level interrupt hardware access
* @handler_data: per-IRQ data for the irq_chip methods
@@ -173,6 +155,9 @@ struct irq_data {
* 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,
@@ -183,6 +168,9 @@ enum {
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)
@@ -205,6 +193,11 @@ 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;
@@ -234,6 +227,36 @@ 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;
+}
+
/**
* struct irq_chip - hardware interrupt chip descriptor
*
@@ -270,34 +293,15 @@ static inline bool irqd_can_move_in_process_context(struct irq_data *d)
* @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_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;
-#ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED
- unsigned int (*startup)(unsigned int irq);
- void (*shutdown)(unsigned int irq);
- void (*enable)(unsigned int irq);
- void (*disable)(unsigned int irq);
-
- void (*ack)(unsigned int irq);
- void (*mask)(unsigned int irq);
- void (*mask_ack)(unsigned int irq);
- void (*unmask)(unsigned int irq);
- void (*eoi)(unsigned int irq);
-
- void (*end)(unsigned int irq);
- int (*set_affinity)(unsigned int irq,
- const struct cpumask *dest);
- int (*retrigger)(unsigned int irq);
- int (*set_type)(unsigned int irq, unsigned int flow_type);
- int (*set_wake)(unsigned int irq, unsigned int on);
-
- void (*bus_lock)(unsigned int irq);
- void (*bus_sync_unlock)(unsigned int irq);
-#endif
unsigned int (*irq_startup)(struct irq_data *data);
void (*irq_shutdown)(struct irq_data *data);
void (*irq_enable)(struct irq_data *data);
@@ -317,6 +321,11 @@ struct irq_chip {
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_print_chip)(struct irq_data *data, struct seq_file *p);
+
unsigned long flags;
/* Currently used only by UML, might disappear one day.*/
@@ -331,11 +340,14 @@ struct irq_chip {
* 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
*/
enum {
IRQCHIP_SET_TYPE_MASKED = (1 << 0),
IRQCHIP_EOI_IF_HANDLED = (1 << 1),
IRQCHIP_MASK_ON_SUSPEND = (1 << 2),
+ IRQCHIP_ONOFFLINE_ENABLED = (1 << 3),
};
/* This include will go away once we isolated irq_desc usage to core code */
@@ -360,25 +372,22 @@ struct irqaction;
extern int setup_irq(unsigned int irq, struct irqaction *new);
extern void remove_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 move_native_irq(int irq);
-void move_masked_irq(int irq);
void irq_move_irq(struct irq_data *data);
void irq_move_masked_irq(struct irq_data *data);
#else
-static inline void move_native_irq(int irq) { }
-static inline void move_masked_irq(int irq) { }
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;
-/* Handle irq action chains: */
-extern irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action);
-
/*
* Built-in IRQ handlers for various IRQ types,
* callable via desc->handle_irq()
@@ -386,6 +395,7 @@ extern irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action);
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_bad_irq(unsigned int irq, struct irq_desc *desc);
@@ -534,89 +544,6 @@ static inline struct msi_desc *irq_data_get_msi(struct irq_data *d)
return d->msi_desc;
}
-#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT
-/* Please do not use: Use the replacement functions instead */
-static inline int set_irq_chip(unsigned int irq, struct irq_chip *chip)
-{
- return irq_set_chip(irq, chip);
-}
-static inline int set_irq_data(unsigned int irq, void *data)
-{
- return irq_set_handler_data(irq, data);
-}
-static inline int set_irq_chip_data(unsigned int irq, void *data)
-{
- return irq_set_chip_data(irq, data);
-}
-static inline int set_irq_type(unsigned int irq, unsigned int type)
-{
- return irq_set_irq_type(irq, type);
-}
-static inline int set_irq_msi(unsigned int irq, struct msi_desc *entry)
-{
- return irq_set_msi_desc(irq, entry);
-}
-static inline struct irq_chip *get_irq_chip(unsigned int irq)
-{
- return irq_get_chip(irq);
-}
-static inline void *get_irq_chip_data(unsigned int irq)
-{
- return irq_get_chip_data(irq);
-}
-static inline void *get_irq_data(unsigned int irq)
-{
- return irq_get_handler_data(irq);
-}
-static inline void *irq_data_get_irq_data(struct irq_data *d)
-{
- return irq_data_get_irq_handler_data(d);
-}
-static inline struct msi_desc *get_irq_msi(unsigned int irq)
-{
- return irq_get_msi_desc(irq);
-}
-static inline void set_irq_noprobe(unsigned int irq)
-{
- irq_set_noprobe(irq);
-}
-static inline void set_irq_probe(unsigned int irq)
-{
- irq_set_probe(irq);
-}
-static inline void set_irq_nested_thread(unsigned int irq, int nest)
-{
- irq_set_nested_thread(irq, nest);
-}
-static inline void
-set_irq_chip_and_handler_name(unsigned int irq, struct irq_chip *chip,
- irq_flow_handler_t handle, const char *name)
-{
- irq_set_chip_and_handler_name(irq, chip, handle, name);
-}
-static inline void
-set_irq_chip_and_handler(unsigned int irq, struct irq_chip *chip,
- irq_flow_handler_t handle)
-{
- irq_set_chip_and_handler(irq, chip, handle);
-}
-static inline void
-__set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
- const char *name)
-{
- __irq_set_handler(irq, handle, is_chained, name);
-}
-static inline void set_irq_handler(unsigned int irq, irq_flow_handler_t handle)
-{
- irq_set_handler(irq, handle);
-}
-static inline void
-set_irq_chained_handler(unsigned int irq, irq_flow_handler_t handle)
-{
- irq_set_chained_handler(irq, handle);
-}
-#endif
-
int irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node);
void irq_free_descs(unsigned int irq, unsigned int cnt);
int irq_reserve_irqs(unsigned int from, unsigned int cnt);