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-rw-r--r--kernel/irq/Kconfig15
-rw-r--r--kernel/irq/Makefile1
-rw-r--r--kernel/irq/autoprobe.c4
-rw-r--r--kernel/irq/chip.c288
-rw-r--r--kernel/irq/compat.h72
-rw-r--r--kernel/irq/debug.h13
-rw-r--r--kernel/irq/dummychip.c9
-rw-r--r--kernel/irq/generic-chip.c354
-rw-r--r--kernel/irq/handle.c19
-rw-r--r--kernel/irq/internals.h16
-rw-r--r--kernel/irq/irqdesc.c25
-rw-r--r--kernel/irq/manage.c106
-rw-r--r--kernel/irq/migration.c17
-rw-r--r--kernel/irq/proc.c10
-rw-r--r--kernel/irq/resend.c1
-rw-r--r--kernel/irq/settings.h72
-rw-r--r--kernel/irq/spurious.c11
17 files changed, 640 insertions, 393 deletions
diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig
index 00f2c037267..d1d051b38e0 100644
--- a/kernel/irq/Kconfig
+++ b/kernel/irq/Kconfig
@@ -10,13 +10,6 @@ menu "IRQ subsystem"
config GENERIC_HARDIRQS
def_bool y
-# Select this to disable the deprecated stuff
-config GENERIC_HARDIRQS_NO_DEPRECATED
- bool
-
-config GENERIC_HARDIRQS_NO_COMPAT
- bool
-
# Options selectable by the architecture code
# Make sparse irq Kconfig switch below available
@@ -51,6 +44,14 @@ config HARDIRQS_SW_RESEND
config IRQ_PREFLOW_FASTEOI
bool
+# Edge style eoi based handler (cell)
+config IRQ_EDGE_EOI_HANDLER
+ bool
+
+# Generic configurable interrupt chip implementation
+config GENERIC_IRQ_CHIP
+ bool
+
# Support forced irq threading
config IRQ_FORCED_THREADING
bool
diff --git a/kernel/irq/Makefile b/kernel/irq/Makefile
index 54329cd7b3e..73290056cfb 100644
--- a/kernel/irq/Makefile
+++ b/kernel/irq/Makefile
@@ -1,5 +1,6 @@
obj-y := irqdesc.o handle.o manage.o spurious.o resend.o chip.o dummychip.o devres.o
+obj-$(CONFIG_GENERIC_IRQ_CHIP) += generic-chip.o
obj-$(CONFIG_GENERIC_IRQ_PROBE) += autoprobe.o
obj-$(CONFIG_PROC_FS) += proc.o
obj-$(CONFIG_GENERIC_PENDING_IRQ) += migration.o
diff --git a/kernel/irq/autoprobe.c b/kernel/irq/autoprobe.c
index 394784c5706..342d8f44e40 100644
--- a/kernel/irq/autoprobe.c
+++ b/kernel/irq/autoprobe.c
@@ -70,10 +70,8 @@ unsigned long probe_irq_on(void)
raw_spin_lock_irq(&desc->lock);
if (!desc->action && irq_settings_can_probe(desc)) {
desc->istate |= IRQS_AUTODETECT | IRQS_WAITING;
- if (irq_startup(desc)) {
- irq_compat_set_pending(desc);
+ if (irq_startup(desc))
desc->istate |= IRQS_PENDING;
- }
}
raw_spin_unlock_irq(&desc->lock);
}
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index c9c0601f061..d5a3009da71 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -34,9 +34,14 @@ int irq_set_chip(unsigned int irq, struct irq_chip *chip)
if (!chip)
chip = &no_irq_chip;
- irq_chip_set_defaults(chip);
desc->irq_data.chip = chip;
irq_put_desc_unlock(desc, flags);
+ /*
+ * For !CONFIG_SPARSE_IRQ make the irq show up in
+ * allocated_irqs. For the CONFIG_SPARSE_IRQ case, it is
+ * already marked, and this call is harmless.
+ */
+ irq_reserve_irq(irq);
return 0;
}
EXPORT_SYMBOL(irq_set_chip);
@@ -134,26 +139,22 @@ EXPORT_SYMBOL_GPL(irq_get_irq_data);
static void irq_state_clr_disabled(struct irq_desc *desc)
{
- desc->istate &= ~IRQS_DISABLED;
- irq_compat_clr_disabled(desc);
+ irqd_clear(&desc->irq_data, IRQD_IRQ_DISABLED);
}
static void irq_state_set_disabled(struct irq_desc *desc)
{
- desc->istate |= IRQS_DISABLED;
- irq_compat_set_disabled(desc);
+ irqd_set(&desc->irq_data, IRQD_IRQ_DISABLED);
}
static void irq_state_clr_masked(struct irq_desc *desc)
{
- desc->istate &= ~IRQS_MASKED;
- irq_compat_clr_masked(desc);
+ irqd_clear(&desc->irq_data, IRQD_IRQ_MASKED);
}
static void irq_state_set_masked(struct irq_desc *desc)
{
- desc->istate |= IRQS_MASKED;
- irq_compat_set_masked(desc);
+ irqd_set(&desc->irq_data, IRQD_IRQ_MASKED);
}
int irq_startup(struct irq_desc *desc)
@@ -203,126 +204,6 @@ void irq_disable(struct irq_desc *desc)
}
}
-#ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED
-/* Temporary migration helpers */
-static void compat_irq_mask(struct irq_data *data)
-{
- data->chip->mask(data->irq);
-}
-
-static void compat_irq_unmask(struct irq_data *data)
-{
- data->chip->unmask(data->irq);
-}
-
-static void compat_irq_ack(struct irq_data *data)
-{
- data->chip->ack(data->irq);
-}
-
-static void compat_irq_mask_ack(struct irq_data *data)
-{
- data->chip->mask_ack(data->irq);
-}
-
-static void compat_irq_eoi(struct irq_data *data)
-{
- data->chip->eoi(data->irq);
-}
-
-static void compat_irq_enable(struct irq_data *data)
-{
- data->chip->enable(data->irq);
-}
-
-static void compat_irq_disable(struct irq_data *data)
-{
- data->chip->disable(data->irq);
-}
-
-static void compat_irq_shutdown(struct irq_data *data)
-{
- data->chip->shutdown(data->irq);
-}
-
-static unsigned int compat_irq_startup(struct irq_data *data)
-{
- return data->chip->startup(data->irq);
-}
-
-static int compat_irq_set_affinity(struct irq_data *data,
- const struct cpumask *dest, bool force)
-{
- return data->chip->set_affinity(data->irq, dest);
-}
-
-static int compat_irq_set_type(struct irq_data *data, unsigned int type)
-{
- return data->chip->set_type(data->irq, type);
-}
-
-static int compat_irq_set_wake(struct irq_data *data, unsigned int on)
-{
- return data->chip->set_wake(data->irq, on);
-}
-
-static int compat_irq_retrigger(struct irq_data *data)
-{
- return data->chip->retrigger(data->irq);
-}
-
-static void compat_bus_lock(struct irq_data *data)
-{
- data->chip->bus_lock(data->irq);
-}
-
-static void compat_bus_sync_unlock(struct irq_data *data)
-{
- data->chip->bus_sync_unlock(data->irq);
-}
-#endif
-
-/*
- * Fixup enable/disable function pointers
- */
-void irq_chip_set_defaults(struct irq_chip *chip)
-{
-#ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED
- if (chip->enable)
- chip->irq_enable = compat_irq_enable;
- if (chip->disable)
- chip->irq_disable = compat_irq_disable;
- if (chip->shutdown)
- chip->irq_shutdown = compat_irq_shutdown;
- if (chip->startup)
- chip->irq_startup = compat_irq_startup;
- if (!chip->end)
- chip->end = dummy_irq_chip.end;
- if (chip->bus_lock)
- chip->irq_bus_lock = compat_bus_lock;
- if (chip->bus_sync_unlock)
- chip->irq_bus_sync_unlock = compat_bus_sync_unlock;
- if (chip->mask)
- chip->irq_mask = compat_irq_mask;
- if (chip->unmask)
- chip->irq_unmask = compat_irq_unmask;
- if (chip->ack)
- chip->irq_ack = compat_irq_ack;
- if (chip->mask_ack)
- chip->irq_mask_ack = compat_irq_mask_ack;
- if (chip->eoi)
- chip->irq_eoi = compat_irq_eoi;
- if (chip->set_affinity)
- chip->irq_set_affinity = compat_irq_set_affinity;
- if (chip->set_type)
- chip->irq_set_type = compat_irq_set_type;
- if (chip->set_wake)
- chip->irq_set_wake = compat_irq_set_wake;
- if (chip->retrigger)
- chip->irq_retrigger = compat_irq_retrigger;
-#endif
-}
-
static inline void mask_ack_irq(struct irq_desc *desc)
{
if (desc->irq_data.chip->irq_mask_ack)
@@ -372,11 +253,10 @@ void handle_nested_irq(unsigned int irq)
kstat_incr_irqs_this_cpu(irq, desc);
action = desc->action;
- if (unlikely(!action || (desc->istate & IRQS_DISABLED)))
+ if (unlikely(!action || irqd_irq_disabled(&desc->irq_data)))
goto out_unlock;
- irq_compat_set_progress(desc);
- desc->istate |= IRQS_INPROGRESS;
+ irqd_set(&desc->irq_data, IRQD_IRQ_INPROGRESS);
raw_spin_unlock_irq(&desc->lock);
action_ret = action->thread_fn(action->irq, action->dev_id);
@@ -384,8 +264,7 @@ void handle_nested_irq(unsigned int irq)
note_interrupt(irq, desc, action_ret);
raw_spin_lock_irq(&desc->lock);
- desc->istate &= ~IRQS_INPROGRESS;
- irq_compat_clr_progress(desc);
+ irqd_clear(&desc->irq_data, IRQD_IRQ_INPROGRESS);
out_unlock:
raw_spin_unlock_irq(&desc->lock);
@@ -416,14 +295,14 @@ handle_simple_irq(unsigned int irq, struct irq_desc *desc)
{
raw_spin_lock(&desc->lock);
- if (unlikely(desc->istate & IRQS_INPROGRESS))
+ if (unlikely(irqd_irq_inprogress(&desc->irq_data)))
if (!irq_check_poll(desc))
goto out_unlock;
desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);
kstat_incr_irqs_this_cpu(irq, desc);
- if (unlikely(!desc->action || (desc->istate & IRQS_DISABLED)))
+ if (unlikely(!desc->action || irqd_irq_disabled(&desc->irq_data)))
goto out_unlock;
handle_irq_event(desc);
@@ -431,6 +310,7 @@ handle_simple_irq(unsigned int irq, struct irq_desc *desc)
out_unlock:
raw_spin_unlock(&desc->lock);
}
+EXPORT_SYMBOL_GPL(handle_simple_irq);
/**
* handle_level_irq - Level type irq handler
@@ -448,7 +328,7 @@ handle_level_irq(unsigned int irq, struct irq_desc *desc)
raw_spin_lock(&desc->lock);
mask_ack_irq(desc);
- if (unlikely(desc->istate & IRQS_INPROGRESS))
+ if (unlikely(irqd_irq_inprogress(&desc->irq_data)))
if (!irq_check_poll(desc))
goto out_unlock;
@@ -459,12 +339,12 @@ handle_level_irq(unsigned int irq, struct irq_desc *desc)
* If its disabled or no action available
* keep it masked and get out of here
*/
- if (unlikely(!desc->action || (desc->istate & IRQS_DISABLED)))
+ if (unlikely(!desc->action || irqd_irq_disabled(&desc->irq_data)))
goto out_unlock;
handle_irq_event(desc);
- if (!(desc->istate & (IRQS_DISABLED | IRQS_ONESHOT)))
+ if (!irqd_irq_disabled(&desc->irq_data) && !(desc->istate & IRQS_ONESHOT))
unmask_irq(desc);
out_unlock:
raw_spin_unlock(&desc->lock);
@@ -496,7 +376,7 @@ handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc)
{
raw_spin_lock(&desc->lock);
- if (unlikely(desc->istate & IRQS_INPROGRESS))
+ if (unlikely(irqd_irq_inprogress(&desc->irq_data)))
if (!irq_check_poll(desc))
goto out;
@@ -507,8 +387,7 @@ handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc)
* If its disabled or no action available
* then mask it and get out of here:
*/
- if (unlikely(!desc->action || (desc->istate & IRQS_DISABLED))) {
- irq_compat_set_pending(desc);
+ if (unlikely(!desc->action || irqd_irq_disabled(&desc->irq_data))) {
desc->istate |= IRQS_PENDING;
mask_irq(desc);
goto out;
@@ -537,7 +416,7 @@ out:
* @desc: the interrupt description structure for this irq
*
* Interrupt occures on the falling and/or rising edge of a hardware
- * signal. The occurence is latched into the irq controller hardware
+ * signal. The occurrence is latched into the irq controller hardware
* and must be acked in order to be reenabled. After the ack another
* interrupt can happen on the same source even before the first one
* is handled by the associated event handler. If this happens it
@@ -558,10 +437,9 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
* we shouldn't process the IRQ. Mark it pending, handle
* the necessary masking and go out
*/
- if (unlikely((desc->istate & (IRQS_DISABLED | IRQS_INPROGRESS) ||
- !desc->action))) {
+ if (unlikely(irqd_irq_disabled(&desc->irq_data) ||
+ irqd_irq_inprogress(&desc->irq_data) || !desc->action)) {
if (!irq_check_poll(desc)) {
- irq_compat_set_pending(desc);
desc->istate |= IRQS_PENDING;
mask_ack_irq(desc);
goto out_unlock;
@@ -584,20 +462,65 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
* Renable it, if it was not disabled in meantime.
*/
if (unlikely(desc->istate & IRQS_PENDING)) {
- if (!(desc->istate & IRQS_DISABLED) &&
- (desc->istate & IRQS_MASKED))
+ if (!irqd_irq_disabled(&desc->irq_data) &&
+ irqd_irq_masked(&desc->irq_data))
unmask_irq(desc);
}
handle_irq_event(desc);
} while ((desc->istate & IRQS_PENDING) &&
- !(desc->istate & IRQS_DISABLED));
+ !irqd_irq_disabled(&desc->irq_data));
out_unlock:
raw_spin_unlock(&desc->lock);
}
+#ifdef CONFIG_IRQ_EDGE_EOI_HANDLER
+/**
+ * handle_edge_eoi_irq - edge eoi type IRQ handler
+ * @irq: the interrupt number
+ * @desc: the interrupt description structure for this irq
+ *
+ * Similar as the above handle_edge_irq, but using eoi and w/o the
+ * mask/unmask logic.
+ */
+void handle_edge_eoi_irq(unsigned int irq, struct irq_desc *desc)
+{
+ struct irq_chip *chip = irq_desc_get_chip(desc);
+
+ raw_spin_lock(&desc->lock);
+
+ desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);
+ /*
+ * If we're currently running this IRQ, or its disabled,
+ * we shouldn't process the IRQ. Mark it pending, handle
+ * the necessary masking and go out
+ */
+ if (unlikely(irqd_irq_disabled(&desc->irq_data) ||
+ irqd_irq_inprogress(&desc->irq_data) || !desc->action)) {
+ if (!irq_check_poll(desc)) {
+ desc->istate |= IRQS_PENDING;
+ goto out_eoi;
+ }
+ }
+ kstat_incr_irqs_this_cpu(irq, desc);
+
+ do {
+ if (unlikely(!desc->action))
+ goto out_eoi;
+
+ handle_irq_event(desc);
+
+ } while ((desc->istate & IRQS_PENDING) &&
+ !irqd_irq_disabled(&desc->irq_data));
+
+out_eoi:
+ chip->irq_eoi(&desc->irq_data);
+ raw_spin_unlock(&desc->lock);
+}
+#endif
+
/**
* handle_percpu_irq - Per CPU local irq handler
* @irq: the interrupt number
@@ -642,8 +565,7 @@ __irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
if (handle == handle_bad_irq) {
if (desc->irq_data.chip != &no_irq_chip)
mask_ack_irq(desc);
- irq_compat_set_disabled(desc);
- desc->istate |= IRQS_DISABLED;
+ irq_state_set_disabled(desc);
desc->depth = 1;
}
desc->handle_irq = handle;
@@ -652,6 +574,7 @@ __irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
if (handle != handle_bad_irq && is_chained) {
irq_settings_set_noprobe(desc);
irq_settings_set_norequest(desc);
+ irq_settings_set_nothread(desc);
irq_startup(desc);
}
out:
@@ -684,8 +607,71 @@ void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set)
irqd_set(&desc->irq_data, IRQD_PER_CPU);
if (irq_settings_can_move_pcntxt(desc))
irqd_set(&desc->irq_data, IRQD_MOVE_PCNTXT);
+ if (irq_settings_is_level(desc))
+ irqd_set(&desc->irq_data, IRQD_LEVEL);
irqd_set(&desc->irq_data, irq_settings_get_trigger_mask(desc));
irq_put_desc_unlock(desc, flags);
}
+EXPORT_SYMBOL_GPL(irq_modify_status);
+
+/**
+ * irq_cpu_online - Invoke all irq_cpu_online functions.
+ *
+ * Iterate through all irqs and invoke the chip.irq_cpu_online()
+ * for each.
+ */
+void irq_cpu_online(void)
+{
+ struct irq_desc *desc;
+ struct irq_chip *chip;
+ unsigned long flags;
+ unsigned int irq;
+
+ for_each_active_irq(irq) {
+ desc = irq_to_desc(irq);
+ if (!desc)
+ continue;
+
+ raw_spin_lock_irqsave(&desc->lock, flags);
+
+ chip = irq_data_get_irq_chip(&desc->irq_data);
+ if (chip && chip->irq_cpu_online &&
+ (!(chip->flags & IRQCHIP_ONOFFLINE_ENABLED) ||
+ !irqd_irq_disabled(&desc->irq_data)))
+ chip->irq_cpu_online(&desc->irq_data);
+
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ }
+}
+
+/**
+ * irq_cpu_offline - Invoke all irq_cpu_offline functions.
+ *
+ * Iterate through all irqs and invoke the chip.irq_cpu_offline()
+ * for each.
+ */
+void irq_cpu_offline(void)
+{
+ struct irq_desc *desc;
+ struct irq_chip *chip;
+ unsigned long flags;
+ unsigned int irq;
+
+ for_each_active_irq(irq) {
+ desc = irq_to_desc(irq);
+ if (!desc)
+ continue;
+
+ raw_spin_lock_irqsave(&desc->lock, flags);
+
+ chip = irq_data_get_irq_chip(&desc->irq_data);
+ if (chip && chip->irq_cpu_offline &&
+ (!(chip->flags & IRQCHIP_ONOFFLINE_ENABLED) ||
+ !irqd_irq_disabled(&desc->irq_data)))
+ chip->irq_cpu_offline(&desc->irq_data);
+
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+ }
+}
diff --git a/kernel/irq/compat.h b/kernel/irq/compat.h
deleted file mode 100644
index 6bbaf66aca8..00000000000
--- a/kernel/irq/compat.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * Compat layer for transition period
- */
-#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT
-static inline void irq_compat_set_progress(struct irq_desc *desc)
-{
- desc->status |= IRQ_INPROGRESS;
-}
-
-static inline void irq_compat_clr_progress(struct irq_desc *desc)
-{
- desc->status &= ~IRQ_INPROGRESS;
-}
-static inline void irq_compat_set_disabled(struct irq_desc *desc)
-{
- desc->status |= IRQ_DISABLED;
-}
-static inline void irq_compat_clr_disabled(struct irq_desc *desc)
-{
- desc->status &= ~IRQ_DISABLED;
-}
-static inline void irq_compat_set_pending(struct irq_desc *desc)
-{
- desc->status |= IRQ_PENDING;
-}
-
-static inline void irq_compat_clr_pending(struct irq_desc *desc)
-{
- desc->status &= ~IRQ_PENDING;
-}
-static inline void irq_compat_set_masked(struct irq_desc *desc)
-{
- desc->status |= IRQ_MASKED;
-}
-
-static inline void irq_compat_clr_masked(struct irq_desc *desc)
-{
- desc->status &= ~IRQ_MASKED;
-}
-static inline void irq_compat_set_move_pending(struct irq_desc *desc)
-{
- desc->status |= IRQ_MOVE_PENDING;
-}
-
-static inline void irq_compat_clr_move_pending(struct irq_desc *desc)
-{
- desc->status &= ~IRQ_MOVE_PENDING;
-}
-static inline void irq_compat_set_affinity(struct irq_desc *desc)
-{
- desc->status |= IRQ_AFFINITY_SET;
-}
-
-static inline void irq_compat_clr_affinity(struct irq_desc *desc)
-{
- desc->status &= ~IRQ_AFFINITY_SET;
-}
-#else
-static inline void irq_compat_set_progress(struct irq_desc *desc) { }
-static inline void irq_compat_clr_progress(struct irq_desc *desc) { }
-static inline void irq_compat_set_disabled(struct irq_desc *desc) { }
-static inline void irq_compat_clr_disabled(struct irq_desc *desc) { }
-static inline void irq_compat_set_pending(struct irq_desc *desc) { }
-static inline void irq_compat_clr_pending(struct irq_desc *desc) { }
-static inline void irq_compat_set_masked(struct irq_desc *desc) { }
-static inline void irq_compat_clr_masked(struct irq_desc *desc) { }
-static inline void irq_compat_set_move_pending(struct irq_desc *desc) { }
-static inline void irq_compat_clr_move_pending(struct irq_desc *desc) { }
-static inline void irq_compat_set_affinity(struct irq_desc *desc) { }
-static inline void irq_compat_clr_affinity(struct irq_desc *desc) { }
-#endif
-
diff --git a/kernel/irq/debug.h b/kernel/irq/debug.h
index d1a33b7fa61..97a8bfadc88 100644
--- a/kernel/irq/debug.h
+++ b/kernel/irq/debug.h
@@ -4,8 +4,10 @@
#include <linux/kallsyms.h>
-#define P(f) if (desc->status & f) printk("%14s set\n", #f)
+#define P(f) if (desc->status_use_accessors & f) printk("%14s set\n", #f)
#define PS(f) if (desc->istate & f) printk("%14s set\n", #f)
+/* FIXME */
+#define PD(f) do { } while (0)
static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc)
{
@@ -25,16 +27,19 @@ static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc)
P(IRQ_PER_CPU);
P(IRQ_NOPROBE);
P(IRQ_NOREQUEST);
+ P(IRQ_NOTHREAD);
P(IRQ_NOAUTOEN);
PS(IRQS_AUTODETECT);
- PS(IRQS_INPROGRESS);
PS(IRQS_REPLAY);
PS(IRQS_WAITING);
- PS(IRQS_DISABLED);
PS(IRQS_PENDING);
- PS(IRQS_MASKED);
+
+ PD(IRQS_INPROGRESS);
+ PD(IRQS_DISABLED);
+ PD(IRQS_MASKED);
}
#undef P
#undef PS
+#undef PD
diff --git a/kernel/irq/dummychip.c b/kernel/irq/dummychip.c
index 20dc5474947..b5fcd96c710 100644
--- a/kernel/irq/dummychip.c
+++ b/kernel/irq/dummychip.c
@@ -31,13 +31,6 @@ static unsigned int noop_ret(struct irq_data *data)
return 0;
}
-#ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED
-static void compat_noop(unsigned int irq) { }
-#define END_INIT .end = compat_noop
-#else
-#define END_INIT
-#endif
-
/*
* Generic no controller implementation
*/
@@ -48,7 +41,6 @@ struct irq_chip no_irq_chip = {
.irq_enable = noop,
.irq_disable = noop,
.irq_ack = ack_bad,
- END_INIT
};
/*
@@ -64,5 +56,4 @@ struct irq_chip dummy_irq_chip = {
.irq_ack = noop,
.irq_mask = noop,
.irq_unmask = noop,
- END_INIT
};
diff --git a/kernel/irq/generic-chip.c b/kernel/irq/generic-chip.c
new file mode 100644
index 00000000000..31a9db71190
--- /dev/null
+++ b/kernel/irq/generic-chip.c
@@ -0,0 +1,354 @@
+/*
+ * Library implementing the most common irq chip callback functions
+ *
+ * Copyright (C) 2011, Thomas Gleixner
+ */
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/kernel_stat.h>
+#include <linux/syscore_ops.h>
+
+#include "internals.h"
+
+static LIST_HEAD(gc_list);
+static DEFINE_RAW_SPINLOCK(gc_lock);
+
+static inline struct irq_chip_regs *cur_regs(struct irq_data *d)
+{
+ return &container_of(d->chip, struct irq_chip_type, chip)->regs;
+}
+
+/**
+ * irq_gc_noop - NOOP function
+ * @d: irq_data
+ */
+void irq_gc_noop(struct irq_data *d)
+{
+}
+
+/**
+ * irq_gc_mask_disable_reg - Mask chip via disable register
+ * @d: irq_data
+ *
+ * Chip has separate enable/disable registers instead of a single mask
+ * register.
+ */
+void irq_gc_mask_disable_reg(struct irq_data *d)
+{
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+ u32 mask = 1 << (d->irq - gc->irq_base);
+
+ irq_gc_lock(gc);
+ irq_reg_writel(mask, gc->reg_base + cur_regs(d)->disable);
+ gc->mask_cache &= ~mask;
+ irq_gc_unlock(gc);
+}
+
+/**
+ * irq_gc_mask_set_mask_bit - Mask chip via setting bit in mask register
+ * @d: irq_data
+ *
+ * Chip has a single mask register. Values of this register are cached
+ * and protected by gc->lock
+ */
+void irq_gc_mask_set_bit(struct irq_data *d)
+{
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+ u32 mask = 1 << (d->irq - gc->irq_base);
+
+ irq_gc_lock(gc);
+ gc->mask_cache |= mask;
+ irq_reg_writel(gc->mask_cache, gc->reg_base + cur_regs(d)->mask);
+ irq_gc_unlock(gc);
+}
+
+/**
+ * irq_gc_mask_set_mask_bit - Mask chip via clearing bit in mask register
+ * @d: irq_data
+ *
+ * Chip has a single mask register. Values of this register are cached
+ * and protected by gc->lock
+ */
+void irq_gc_mask_clr_bit(struct irq_data *d)
+{
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+ u32 mask = 1 << (d->irq - gc->irq_base);
+
+ irq_gc_lock(gc);
+ gc->mask_cache &= ~mask;
+ irq_reg_writel(gc->mask_cache, gc->reg_base + cur_regs(d)->mask);
+ irq_gc_unlock(gc);
+}
+
+/**
+ * irq_gc_unmask_enable_reg - Unmask chip via enable register
+ * @d: irq_data
+ *
+ * Chip has separate enable/disable registers instead of a single mask
+ * register.
+ */
+void irq_gc_unmask_enable_reg(struct irq_data *d)
+{
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+ u32 mask = 1 << (d->irq - gc->irq_base);
+
+ irq_gc_lock(gc);
+ irq_reg_writel(mask, gc->reg_base + cur_regs(d)->enable);
+ gc->mask_cache |= mask;
+ irq_gc_unlock(gc);
+}
+
+/**
+ * irq_gc_ack - Ack pending interrupt
+ * @d: irq_data
+ */
+void irq_gc_ack(struct irq_data *d)
+{
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+ u32 mask = 1 << (d->irq - gc->irq_base);
+
+ irq_gc_lock(gc);
+ irq_reg_writel(mask, gc->reg_base + cur_regs(d)->ack);
+ irq_gc_unlock(gc);
+}
+
+/**
+ * irq_gc_mask_disable_reg_and_ack- Mask and ack pending interrupt
+ * @d: irq_data
+ */
+void irq_gc_mask_disable_reg_and_ack(struct irq_data *d)
+{
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+ u32 mask = 1 << (d->irq - gc->irq_base);
+
+ irq_gc_lock(gc);
+ irq_reg_writel(mask, gc->reg_base + cur_regs(d)->mask);
+ irq_reg_writel(mask, gc->reg_base + cur_regs(d)->ack);
+ irq_gc_unlock(gc);
+}
+
+/**
+ * irq_gc_eoi - EOI interrupt
+ * @d: irq_data
+ */
+void irq_gc_eoi(struct irq_data *d)
+{
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+ u32 mask = 1 << (d->irq - gc->irq_base);
+
+ irq_gc_lock(gc);
+ irq_reg_writel(mask, gc->reg_base + cur_regs(d)->eoi);
+ irq_gc_unlock(gc);
+}
+
+/**
+ * irq_gc_set_wake - Set/clr wake bit for an interrupt
+ * @d: irq_data
+ *
+ * For chips where the wake from suspend functionality is not
+ * configured in a separate register and the wakeup active state is
+ * just stored in a bitmask.
+ */
+int irq_gc_set_wake(struct irq_data *d, unsigned int on)
+{
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+ u32 mask = 1 << (d->irq - gc->irq_base);
+
+ if (!(mask & gc->wake_enabled))
+ return -EINVAL;
+
+ irq_gc_lock(gc);
+ if (on)
+ gc->wake_active |= mask;
+ else
+ gc->wake_active &= ~mask;
+ irq_gc_unlock(gc);
+ return 0;
+}
+
+/**
+ * irq_alloc_generic_chip - Allocate a generic chip and initialize it
+ * @name: Name of the irq chip
+ * @num_ct: Number of irq_chip_type instances associated with this
+ * @irq_base: Interrupt base nr for this chip
+ * @reg_base: Register base address (virtual)
+ * @handler: Default flow handler associated with this chip
+ *
+ * Returns an initialized irq_chip_generic structure. The chip defaults
+ * to the primary (index 0) irq_chip_type and @handler
+ */
+struct irq_chip_generic *
+irq_alloc_generic_chip(const char *name, int num_ct, unsigned int irq_base,
+ void __iomem *reg_base, irq_flow_handler_t handler)
+{
+ struct irq_chip_generic *gc;
+ unsigned long sz = sizeof(*gc) + num_ct * sizeof(struct irq_chip_type);
+
+ gc = kzalloc(sz, GFP_KERNEL);
+ if (gc) {
+ raw_spin_lock_init(&gc->lock);
+ gc->num_ct = num_ct;
+ gc->irq_base = irq_base;
+ gc->reg_base = reg_base;
+ gc->chip_types->chip.name = name;
+ gc->chip_types->handler = handler;
+ }
+ return gc;
+}
+
+/*
+ * Separate lockdep class for interrupt chip which can nest irq_desc
+ * lock.
+ */
+static struct lock_class_key irq_nested_lock_class;
+
+/**
+ * irq_setup_generic_chip - Setup a range of interrupts with a generic chip
+ * @gc: Generic irq chip holding all data
+ * @msk: Bitmask holding the irqs to initialize relative to gc->irq_base
+ * @flags: Flags for initialization
+ * @clr: IRQ_* bits to clear
+ * @set: IRQ_* bits to set
+ *
+ * Set up max. 32 interrupts starting from gc->irq_base. Note, this
+ * initializes all interrupts to the primary irq_chip_type and its
+ * associated handler.
+ */
+void irq_setup_generic_chip(struct irq_chip_generic *gc, u32 msk,
+ enum irq_gc_flags flags, unsigned int clr,
+ unsigned int set)
+{
+ struct irq_chip_type *ct = gc->chip_types;
+ unsigned int i;
+
+ raw_spin_lock(&gc_lock);
+ list_add_tail(&gc->list, &gc_list);
+ raw_spin_unlock(&gc_lock);
+
+ /* Init mask cache ? */
+ if (flags & IRQ_GC_INIT_MASK_CACHE)
+ gc->mask_cache = irq_reg_readl(gc->reg_base + ct->regs.mask);
+
+ for (i = gc->irq_base; msk; msk >>= 1, i++) {
+ if (!msk & 0x01)
+ continue;
+
+ if (flags & IRQ_GC_INIT_NESTED_LOCK)
+ irq_set_lockdep_class(i, &irq_nested_lock_class);
+
+ irq_set_chip_and_handler(i, &ct->chip, ct->handler);
+ irq_set_chip_data(i, gc);
+ irq_modify_status(i, clr, set);
+ }
+ gc->irq_cnt = i - gc->irq_base;
+}
+
+/**
+ * irq_setup_alt_chip - Switch to alternative chip
+ * @d: irq_data for this interrupt
+ * @type Flow type to be initialized
+ *
+ * Only to be called from chip->irq_set_type() callbacks.
+ */
+int irq_setup_alt_chip(struct irq_data *d, unsigned int type)
+{
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+ struct irq_chip_type *ct = gc->chip_types;
+ unsigned int i;
+
+ for (i = 0; i < gc->num_ct; i++, ct++) {
+ if (ct->type & type) {
+ d->chip = &ct->chip;
+ irq_data_to_desc(d)->handle_irq = ct->handler;
+ return 0;
+ }
+ }
+ return -EINVAL;
+}
+
+/**
+ * irq_remove_generic_chip - Remove a chip
+ * @gc: Generic irq chip holding all data
+ * @msk: Bitmask holding the irqs to initialize relative to gc->irq_base
+ * @clr: IRQ_* bits to clear
+ * @set: IRQ_* bits to set
+ *
+ * Remove up to 32 interrupts starting from gc->irq_base.
+ */
+void irq_remove_generic_chip(struct irq_chip_generic *gc, u32 msk,
+ unsigned int clr, unsigned int set)
+{
+ unsigned int i = gc->irq_base;
+
+ raw_spin_lock(&gc_lock);
+ list_del(&gc->list);
+ raw_spin_unlock(&gc_lock);
+
+ for (; msk; msk >>= 1, i++) {
+ if (!msk & 0x01)
+ continue;
+
+ /* Remove handler first. That will mask the irq line */
+ irq_set_handler(i, NULL);
+ irq_set_chip(i, &no_irq_chip);
+ irq_set_chip_data(i, NULL);
+ irq_modify_status(i, clr, set);
+ }
+}
+
+#ifdef CONFIG_PM
+static int irq_gc_suspend(void)
+{
+ struct irq_chip_generic *gc;
+
+ list_for_each_entry(gc, &gc_list, list) {
+ struct irq_chip_type *ct = gc->chip_types;
+
+ if (ct->chip.irq_suspend)
+ ct->chip.irq_suspend(irq_get_irq_data(gc->irq_base));
+ }
+ return 0;
+}
+
+static void irq_gc_resume(void)
+{
+ struct irq_chip_generic *gc;
+
+ list_for_each_entry(gc, &gc_list, list) {
+ struct irq_chip_type *ct = gc->chip_types;
+
+ if (ct->chip.irq_resume)
+ ct->chip.irq_resume(irq_get_irq_data(gc->irq_base));
+ }
+}
+#else
+#define irq_gc_suspend NULL
+#define irq_gc_resume NULL
+#endif
+
+static void irq_gc_shutdown(void)
+{
+ struct irq_chip_generic *gc;
+
+ list_for_each_entry(gc, &gc_list, list) {
+ struct irq_chip_type *ct = gc->chip_types;
+
+ if (ct->chip.irq_pm_shutdown)
+ ct->chip.irq_pm_shutdown(irq_get_irq_data(gc->irq_base));
+ }
+}
+
+static struct syscore_ops irq_gc_syscore_ops = {
+ .suspend = irq_gc_suspend,
+ .resume = irq_gc_resume,
+ .shutdown = irq_gc_shutdown,
+};
+
+static int __init irq_gc_init_ops(void)
+{
+ register_syscore_ops(&irq_gc_syscore_ops);
+ return 0;
+}
+device_initcall(irq_gc_init_ops);
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 517561fc731..90cb55f6d7e 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -175,28 +175,13 @@ irqreturn_t handle_irq_event(struct irq_desc *desc)
struct irqaction *action = desc->action;
irqreturn_t ret;
- irq_compat_clr_pending(desc);
desc->istate &= ~IRQS_PENDING;
- irq_compat_set_progress(desc);
- desc->istate |= IRQS_INPROGRESS;
+ irqd_set(&desc->irq_data, IRQD_IRQ_INPROGRESS);
raw_spin_unlock(&desc->lock);
ret = handle_irq_event_percpu(desc, action);
raw_spin_lock(&desc->lock);
- desc->istate &= ~IRQS_INPROGRESS;
- irq_compat_clr_progress(desc);
+ irqd_clear(&desc->irq_data, IRQD_IRQ_INPROGRESS);
return ret;
}
-
-/**
- * handle_IRQ_event - irq action chain handler
- * @irq: the interrupt number
- * @action: the interrupt action chain for this irq
- *
- * Handles the action chain of an irq event
- */
-irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action)
-{
- return handle_irq_event_percpu(irq_to_desc(irq), action);
-}
diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index 6c6ec9a4902..6546431447d 100644
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -15,10 +15,6 @@
#define istate core_internal_state__do_not_mess_with_it
-#ifdef CONFIG_GENERIC_HARDIRQS_NO_COMPAT
-# define status status_use_accessors
-#endif
-
extern int noirqdebug;
/*
@@ -44,38 +40,28 @@ enum {
* IRQS_SPURIOUS_DISABLED - was disabled due to spurious interrupt
* detection
* IRQS_POLL_INPROGRESS - polling in progress
- * IRQS_INPROGRESS - Interrupt in progress
* IRQS_ONESHOT - irq is not unmasked in primary handler
* IRQS_REPLAY - irq is replayed
* IRQS_WAITING - irq is waiting
- * IRQS_DISABLED - irq is disabled
* IRQS_PENDING - irq is pending and replayed later
- * IRQS_MASKED - irq is masked
* IRQS_SUSPENDED - irq is suspended
*/
enum {
IRQS_AUTODETECT = 0x00000001,
IRQS_SPURIOUS_DISABLED = 0x00000002,
IRQS_POLL_INPROGRESS = 0x00000008,
- IRQS_INPROGRESS = 0x00000010,
IRQS_ONESHOT = 0x00000020,
IRQS_REPLAY = 0x00000040,
IRQS_WAITING = 0x00000080,
- IRQS_DISABLED = 0x00000100,
IRQS_PENDING = 0x00000200,
- IRQS_MASKED = 0x00000400,
IRQS_SUSPENDED = 0x00000800,
};
-#include "compat.h"
#include "debug.h"
#include "settings.h"
#define irq_data_to_desc(data) container_of(data, struct irq_desc, irq_data)
-/* Set default functions for irq_chip structures: */
-extern void irq_chip_set_defaults(struct irq_chip *chip);
-
extern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
unsigned long flags);
extern void __disable_irq(struct irq_desc *desc, unsigned int irq, bool susp);
@@ -162,13 +148,11 @@ irq_put_desc_unlock(struct irq_desc *desc, unsigned long flags)
static inline void irqd_set_move_pending(struct irq_data *d)
{
d->state_use_accessors |= IRQD_SETAFFINITY_PENDING;
- irq_compat_set_move_pending(irq_data_to_desc(d));
}
static inline void irqd_clr_move_pending(struct irq_data *d)
{
d->state_use_accessors &= ~IRQD_SETAFFINITY_PENDING;
- irq_compat_clr_move_pending(irq_data_to_desc(d));
}
static inline void irqd_clear(struct irq_data *d, unsigned int mask)
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 6fb014f172f..886e80347b3 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -22,7 +22,7 @@
*/
static struct lock_class_key irq_desc_lock_class;
-#if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_HARDIRQS)
+#if defined(CONFIG_SMP)
static void __init init_irq_default_affinity(void)
{
alloc_cpumask_var(&irq_default_affinity, GFP_NOWAIT);
@@ -80,7 +80,7 @@ static void desc_set_defaults(unsigned int irq, struct irq_desc *desc, int node)
desc->irq_data.handler_data = NULL;
desc->irq_data.msi_desc = NULL;
irq_settings_clr_and_set(desc, ~0, _IRQ_DEFAULT_INIT_FLAGS);
- desc->istate = IRQS_DISABLED;
+ irqd_set(&desc->irq_data, IRQD_IRQ_DISABLED);
desc->handle_irq = handle_bad_irq;
desc->depth = 1;
desc->irq_count = 0;
@@ -238,7 +238,6 @@ int __init early_irq_init(void)
struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = {
[0 ... NR_IRQS-1] = {
- .istate = IRQS_DISABLED,
.handle_irq = handle_bad_irq,
.depth = 1,
.lock = __RAW_SPIN_LOCK_UNLOCKED(irq_desc->lock),
@@ -291,6 +290,22 @@ static int irq_expand_nr_irqs(unsigned int nr)
#endif /* !CONFIG_SPARSE_IRQ */
+/**
+ * generic_handle_irq - Invoke the handler for a particular irq
+ * @irq: The irq number to handle
+ *
+ */
+int generic_handle_irq(unsigned int irq)
+{
+ struct irq_desc *desc = irq_to_desc(irq);
+
+ if (!desc)
+ return -EINVAL;
+ generic_handle_irq_desc(irq, desc);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(generic_handle_irq);
+
/* Dynamic interrupt handling */
/**
@@ -312,6 +327,7 @@ void irq_free_descs(unsigned int from, unsigned int cnt)
bitmap_clear(allocated_irqs, from, cnt);
mutex_unlock(&sparse_irq_lock);
}
+EXPORT_SYMBOL_GPL(irq_free_descs);
/**
* irq_alloc_descs - allocate and initialize a range of irq descriptors
@@ -352,6 +368,7 @@ err:
mutex_unlock(&sparse_irq_lock);
return ret;
}
+EXPORT_SYMBOL_GPL(irq_alloc_descs);
/**
* irq_reserve_irqs - mark irqs allocated
@@ -431,7 +448,6 @@ unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
*per_cpu_ptr(desc->kstat_irqs, cpu) : 0;
}
-#ifdef CONFIG_GENERIC_HARDIRQS
unsigned int kstat_irqs(unsigned int irq)
{
struct irq_desc *desc = irq_to_desc(irq);
@@ -444,4 +460,3 @@ unsigned int kstat_irqs(unsigned int irq)
sum += *per_cpu_ptr(desc->kstat_irqs, cpu);
return sum;
}
-#endif /* CONFIG_GENERIC_HARDIRQS */
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 0a2aa73e536..f7ce0021e1c 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -41,7 +41,7 @@ early_param("threadirqs", setup_forced_irqthreads);
void synchronize_irq(unsigned int irq)
{
struct irq_desc *desc = irq_to_desc(irq);
- unsigned int state;
+ bool inprogress;
if (!desc)
return;
@@ -53,16 +53,16 @@ void synchronize_irq(unsigned int irq)
* Wait until we're out of the critical section. This might
* give the wrong answer due to the lack of memory barriers.
*/
- while (desc->istate & IRQS_INPROGRESS)
+ while (irqd_irq_inprogress(&desc->irq_data))
cpu_relax();
/* Ok, that indicated we're done: double-check carefully. */
raw_spin_lock_irqsave(&desc->lock, flags);
- state = desc->istate;
+ inprogress = irqd_irq_inprogress(&desc->irq_data);
raw_spin_unlock_irqrestore(&desc->lock, flags);
/* Oops, that failed? */
- } while (state & IRQS_INPROGRESS);
+ } while (inprogress);
/*
* We made sure that no hardirq handler is running. Now verify
@@ -112,13 +112,13 @@ void irq_set_thread_affinity(struct irq_desc *desc)
}
#ifdef CONFIG_GENERIC_PENDING_IRQ
-static inline bool irq_can_move_pcntxt(struct irq_desc *desc)
+static inline bool irq_can_move_pcntxt(struct irq_data *data)
{
- return irq_settings_can_move_pcntxt(desc);
+ return irqd_can_move_in_process_context(data);
}
-static inline bool irq_move_pending(struct irq_desc *desc)
+static inline bool irq_move_pending(struct irq_data *data)
{
- return irqd_is_setaffinity_pending(&desc->irq_data);
+ return irqd_is_setaffinity_pending(data);
}
static inline void
irq_copy_pending(struct irq_desc *desc, const struct cpumask *mask)
@@ -131,43 +131,34 @@ irq_get_pending(struct cpumask *mask, struct irq_desc *desc)
cpumask_copy(mask, desc->pending_mask);
}
#else
-static inline bool irq_can_move_pcntxt(struct irq_desc *desc) { return true; }
-static inline bool irq_move_pending(struct irq_desc *desc) { return false; }
+static inline bool irq_can_move_pcntxt(struct irq_data *data) { return true; }
+static inline bool irq_move_pending(struct irq_data *data) { return false; }
static inline void
irq_copy_pending(struct irq_desc *desc, const struct cpumask *mask) { }
static inline void
irq_get_pending(struct cpumask *mask, struct irq_desc *desc) { }
#endif
-/**
- * irq_set_affinity - Set the irq affinity of a given irq
- * @irq: Interrupt to set affinity
- * @cpumask: cpumask
- *
- */
-int irq_set_affinity(unsigned int irq, const struct cpumask *mask)
+int __irq_set_affinity_locked(struct irq_data *data, const struct cpumask *mask)
{
- struct irq_desc *desc = irq_to_desc(irq);
- struct irq_chip *chip = desc->irq_data.chip;
- unsigned long flags;
+ struct irq_chip *chip = irq_data_get_irq_chip(data);
+ struct irq_desc *desc = irq_data_to_desc(data);
int ret = 0;
- if (!chip->irq_set_affinity)
+ if (!chip || !chip->irq_set_affinity)
return -EINVAL;
- raw_spin_lock_irqsave(&desc->lock, flags);
-
- if (irq_can_move_pcntxt(desc)) {
- ret = chip->irq_set_affinity(&desc->irq_data, mask, false);
+ if (irq_can_move_pcntxt(data)) {
+ ret = chip->irq_set_affinity(data, mask, false);
switch (ret) {
case IRQ_SET_MASK_OK:
- cpumask_copy(desc->irq_data.affinity, mask);
+ cpumask_copy(data->affinity, mask);
case IRQ_SET_MASK_OK_NOCOPY:
irq_set_thread_affinity(desc);
ret = 0;
}
} else {
- irqd_set_move_pending(&desc->irq_data);
+ irqd_set_move_pending(data);
irq_copy_pending(desc, mask);
}
@@ -175,8 +166,28 @@ int irq_set_affinity(unsigned int irq, const struct cpumask *mask)
kref_get(&desc->affinity_notify->kref);
schedule_work(&desc->affinity_notify->work);
}
- irq_compat_set_affinity(desc);
- irqd_set(&desc->irq_data, IRQD_AFFINITY_SET);
+ irqd_set(data, IRQD_AFFINITY_SET);
+
+ return ret;
+}
+
+/**
+ * irq_set_affinity - Set the irq affinity of a given irq
+ * @irq: Interrupt to set affinity
+ * @mask: cpumask
+ *
+ */
+int irq_set_affinity(unsigned int irq, const struct cpumask *mask)
+{
+ struct irq_desc *desc = irq_to_desc(irq);
+ unsigned long flags;
+ int ret;
+
+ if (!desc)
+ return -EINVAL;
+
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ ret = __irq_set_affinity_locked(irq_desc_get_irq_data(desc), mask);
raw_spin_unlock_irqrestore(&desc->lock, flags);
return ret;
}
@@ -206,7 +217,7 @@ static void irq_affinity_notify(struct work_struct *work)
goto out;
raw_spin_lock_irqsave(&desc->lock, flags);
- if (irq_move_pending(desc))
+ if (irq_move_pending(&desc->irq_data))
irq_get_pending(cpumask, desc);
else
cpumask_copy(cpumask, desc->irq_data.affinity);
@@ -285,10 +296,8 @@ setup_affinity(unsigned int irq, struct irq_desc *desc, struct cpumask *mask)
if (cpumask_intersects(desc->irq_data.affinity,
cpu_online_mask))
set = desc->irq_data.affinity;
- else {
- irq_compat_clr_affinity(desc);
+ else
irqd_clear(&desc->irq_data, IRQD_AFFINITY_SET);
- }
}
cpumask_and(mask, cpu_online_mask, set);
@@ -551,9 +560,9 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
flags &= IRQ_TYPE_SENSE_MASK;
if (chip->flags & IRQCHIP_SET_TYPE_MASKED) {
- if (!(desc->istate & IRQS_MASKED))
+ if (!irqd_irq_masked(&desc->irq_data))
mask_irq(desc);
- if (!(desc->istate & IRQS_DISABLED))
+ if (!irqd_irq_disabled(&desc->irq_data))
unmask = 1;
}
@@ -575,8 +584,6 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
irqd_set(&desc->irq_data, IRQD_LEVEL);
}
- if (chip != desc->irq_data.chip)
- irq_chip_set_defaults(desc->irq_data.chip);
ret = 0;
break;
default:
@@ -651,7 +658,7 @@ again:
* irq_wake_thread(). See the comment there which explains the
* serialization.
*/
- if (unlikely(desc->istate & IRQS_INPROGRESS)) {
+ if (unlikely(irqd_irq_inprogress(&desc->irq_data))) {
raw_spin_unlock_irq(&desc->lock);
chip_bus_sync_unlock(desc);
cpu_relax();
@@ -668,12 +675,10 @@ again:
desc->threads_oneshot &= ~action->thread_mask;
- if (!desc->threads_oneshot && !(desc->istate & IRQS_DISABLED) &&
- (desc->istate & IRQS_MASKED)) {
- irq_compat_clr_masked(desc);
- desc->istate &= ~IRQS_MASKED;
- desc->irq_data.chip->irq_unmask(&desc->irq_data);
- }
+ if (!desc->threads_oneshot && !irqd_irq_disabled(&desc->irq_data) &&
+ irqd_irq_masked(&desc->irq_data))
+ unmask_irq(desc);
+
out_unlock:
raw_spin_unlock_irq(&desc->lock);
chip_bus_sync_unlock(desc);
@@ -767,7 +772,7 @@ static int irq_thread(void *data)
atomic_inc(&desc->threads_active);
raw_spin_lock_irq(&desc->lock);
- if (unlikely(desc->istate & IRQS_DISABLED)) {
+ if (unlikely(irqd_irq_disabled(&desc->irq_data))) {
/*
* CHECKME: We might need a dedicated
* IRQ_THREAD_PENDING flag here, which
@@ -775,7 +780,6 @@ static int irq_thread(void *data)
* but AFAICT IRQS_PENDING should be fine as it
* retriggers the interrupt itself --- tglx
*/
- irq_compat_set_pending(desc);
desc->istate |= IRQS_PENDING;
raw_spin_unlock_irq(&desc->lock);
} else {
@@ -896,7 +900,8 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
*/
new->handler = irq_nested_primary_handler;
} else {
- irq_setup_forced_threading(new);
+ if (irq_settings_can_thread(desc))
+ irq_setup_forced_threading(new);
}
/*
@@ -971,8 +976,6 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
new->thread_mask = 1 << ffz(thread_mask);
if (!shared) {
- irq_chip_set_defaults(desc->irq_data.chip);
-
init_waitqueue_head(&desc->wait_for_threads);
/* Setup the type (level, edge polarity) if configured: */
@@ -985,8 +988,8 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
}
desc->istate &= ~(IRQS_AUTODETECT | IRQS_SPURIOUS_DISABLED | \
- IRQS_INPROGRESS | IRQS_ONESHOT | \
- IRQS_WAITING);
+ IRQS_ONESHOT | IRQS_WAITING);
+ irqd_clear(&desc->irq_data, IRQD_IRQ_INPROGRESS);
if (new->flags & IRQF_PERCPU) {
irqd_set(&desc->irq_data, IRQD_PER_CPU);
@@ -1049,6 +1052,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
register_irq_proc(irq, desc);
new->dir = NULL;
register_handler_proc(irq, new);
+ free_cpumask_var(mask);
return 0;
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index ec4806d4778..47420908fba 100644
--- a/kernel/irq/migration.c
+++ b/kernel/irq/migration.c
@@ -35,7 +35,7 @@ void irq_move_masked_irq(struct irq_data *idata)
* do the disable, re-program, enable sequence.
* This is *not* particularly important for level triggered
* but in a edge trigger case, we might be setting rte
- * when an active trigger is comming in. This could
+ * when an active trigger is coming in. This could
* cause some ioapics to mal-function.
* Being paranoid i guess!
*
@@ -53,20 +53,14 @@ void irq_move_masked_irq(struct irq_data *idata)
cpumask_clear(desc->pending_mask);
}
-void move_masked_irq(int irq)
-{
- irq_move_masked_irq(irq_get_irq_data(irq));
-}
-
void irq_move_irq(struct irq_data *idata)
{
- struct irq_desc *desc = irq_data_to_desc(idata);
bool masked;
if (likely(!irqd_is_setaffinity_pending(idata)))
return;
- if (unlikely(desc->istate & IRQS_DISABLED))
+ if (unlikely(irqd_irq_disabled(idata)))
return;
/*
@@ -74,15 +68,10 @@ void irq_move_irq(struct irq_data *idata)
* threaded interrupt with ONESHOT set, we can end up with an
* interrupt storm.
*/
- masked = desc->istate & IRQS_MASKED;
+ masked = irqd_irq_masked(idata);
if (!masked)
idata->chip->irq_mask(idata);
irq_move_masked_irq(idata);
if (!masked)
idata->chip->irq_unmask(idata);
}
-
-void move_native_irq(int irq)
-{
- irq_move_irq(irq_get_irq_data(irq));
-}
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index 626d092eed9..834899f2500 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -364,6 +364,10 @@ int __weak arch_show_interrupts(struct seq_file *p, int prec)
return 0;
}
+#ifndef ACTUAL_NR_IRQS
+# define ACTUAL_NR_IRQS nr_irqs
+#endif
+
int show_interrupts(struct seq_file *p, void *v)
{
static int prec;
@@ -373,10 +377,10 @@ int show_interrupts(struct seq_file *p, void *v)
struct irqaction *action;
struct irq_desc *desc;
- if (i > nr_irqs)
+ if (i > ACTUAL_NR_IRQS)
return 0;
- if (i == nr_irqs)
+ if (i == ACTUAL_NR_IRQS)
return arch_show_interrupts(p, prec);
/* print header and calculate the width of the first column */
@@ -415,7 +419,7 @@ int show_interrupts(struct seq_file *p, void *v)
} else {
seq_printf(p, " %8s", "None");
}
-#ifdef CONFIG_GENIRC_IRQ_SHOW_LEVEL
+#ifdef CONFIG_GENERIC_IRQ_SHOW_LEVEL
seq_printf(p, " %-8s", irqd_is_level_type(&desc->irq_data) ? "Level" : "Edge");
#endif
if (desc->name)
diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c
index ad683a99b1e..14dd5761e8c 100644
--- a/kernel/irq/resend.c
+++ b/kernel/irq/resend.c
@@ -65,7 +65,6 @@ void check_irq_resend(struct irq_desc *desc, unsigned int irq)
if (desc->istate & IRQS_REPLAY)
return;
if (desc->istate & IRQS_PENDING) {
- irq_compat_clr_pending(desc);
desc->istate &= ~IRQS_PENDING;
desc->istate |= IRQS_REPLAY;
diff --git a/kernel/irq/settings.h b/kernel/irq/settings.h
index 0227ad35827..f1667833d44 100644
--- a/kernel/irq/settings.h
+++ b/kernel/irq/settings.h
@@ -8,6 +8,7 @@ enum {
_IRQ_LEVEL = IRQ_LEVEL,
_IRQ_NOPROBE = IRQ_NOPROBE,
_IRQ_NOREQUEST = IRQ_NOREQUEST,
+ _IRQ_NOTHREAD = IRQ_NOTHREAD,
_IRQ_NOAUTOEN = IRQ_NOAUTOEN,
_IRQ_MOVE_PCNTXT = IRQ_MOVE_PCNTXT,
_IRQ_NO_BALANCING = IRQ_NO_BALANCING,
@@ -15,20 +16,12 @@ enum {
_IRQF_MODIFY_MASK = IRQF_MODIFY_MASK,
};
-#define IRQ_INPROGRESS GOT_YOU_MORON
-#define IRQ_REPLAY GOT_YOU_MORON
-#define IRQ_WAITING GOT_YOU_MORON
-#define IRQ_DISABLED GOT_YOU_MORON
-#define IRQ_PENDING GOT_YOU_MORON
-#define IRQ_MASKED GOT_YOU_MORON
-#define IRQ_WAKEUP GOT_YOU_MORON
-#define IRQ_MOVE_PENDING GOT_YOU_MORON
#define IRQ_PER_CPU GOT_YOU_MORON
#define IRQ_NO_BALANCING GOT_YOU_MORON
-#define IRQ_AFFINITY_SET GOT_YOU_MORON
#define IRQ_LEVEL GOT_YOU_MORON
#define IRQ_NOPROBE GOT_YOU_MORON
#define IRQ_NOREQUEST GOT_YOU_MORON
+#define IRQ_NOTHREAD GOT_YOU_MORON
#define IRQ_NOAUTOEN GOT_YOU_MORON
#define IRQ_NESTED_THREAD GOT_YOU_MORON
#undef IRQF_MODIFY_MASK
@@ -37,102 +30,113 @@ enum {
static inline void
irq_settings_clr_and_set(struct irq_desc *desc, u32 clr, u32 set)
{
- desc->status &= ~(clr & _IRQF_MODIFY_MASK);
- desc->status |= (set & _IRQF_MODIFY_MASK);
+ desc->status_use_accessors &= ~(clr & _IRQF_MODIFY_MASK);
+ desc->status_use_accessors |= (set & _IRQF_MODIFY_MASK);
}
static inline bool irq_settings_is_per_cpu(struct irq_desc *desc)
{
- return desc->status & _IRQ_PER_CPU;
+ return desc->status_use_accessors & _IRQ_PER_CPU;
}
static inline void irq_settings_set_per_cpu(struct irq_desc *desc)
{
- desc->status |= _IRQ_PER_CPU;
+ desc->status_use_accessors |= _IRQ_PER_CPU;
}
static inline void irq_settings_set_no_balancing(struct irq_desc *desc)
{
- desc->status |= _IRQ_NO_BALANCING;
+ desc->status_use_accessors |= _IRQ_NO_BALANCING;
}
static inline bool irq_settings_has_no_balance_set(struct irq_desc *desc)
{
- return desc->status & _IRQ_NO_BALANCING;
+ return desc->status_use_accessors & _IRQ_NO_BALANCING;
}
static inline u32 irq_settings_get_trigger_mask(struct irq_desc *desc)
{
- return desc->status & IRQ_TYPE_SENSE_MASK;
+ return desc->status_use_accessors & IRQ_TYPE_SENSE_MASK;
}
static inline void
irq_settings_set_trigger_mask(struct irq_desc *desc, u32 mask)
{
- desc->status &= ~IRQ_TYPE_SENSE_MASK;
- desc->status |= mask & IRQ_TYPE_SENSE_MASK;
+ desc->status_use_accessors &= ~IRQ_TYPE_SENSE_MASK;
+ desc->status_use_accessors |= mask & IRQ_TYPE_SENSE_MASK;
}
static inline bool irq_settings_is_level(struct irq_desc *desc)
{
- return desc->status & _IRQ_LEVEL;
+ return desc->status_use_accessors & _IRQ_LEVEL;
}
static inline void irq_settings_clr_level(struct irq_desc *desc)
{
- desc->status &= ~_IRQ_LEVEL;
+ desc->status_use_accessors &= ~_IRQ_LEVEL;
}
static inline void irq_settings_set_level(struct irq_desc *desc)
{
- desc->status |= _IRQ_LEVEL;
+ desc->status_use_accessors |= _IRQ_LEVEL;
}
static inline bool irq_settings_can_request(struct irq_desc *desc)
{
- return !(desc->status & _IRQ_NOREQUEST);
+ return !(desc->status_use_accessors & _IRQ_NOREQUEST);
}
static inline void irq_settings_clr_norequest(struct irq_desc *desc)
{
- desc->status &= ~_IRQ_NOREQUEST;
+ desc->status_use_accessors &= ~_IRQ_NOREQUEST;
}
static inline void irq_settings_set_norequest(struct irq_desc *desc)
{
- desc->status |= _IRQ_NOREQUEST;
+ desc->status_use_accessors |= _IRQ_NOREQUEST;
+}
+
+static inline bool irq_settings_can_thread(struct irq_desc *desc)
+{
+ return !(desc->status_use_accessors & _IRQ_NOTHREAD);
+}
+
+static inline void irq_settings_clr_nothread(struct irq_desc *desc)
+{
+ desc->status_use_accessors &= ~_IRQ_NOTHREAD;
+}
+
+static inline void irq_settings_set_nothread(struct irq_desc *desc)
+{
+ desc->status_use_accessors |= _IRQ_NOTHREAD;
}
static inline bool irq_settings_can_probe(struct irq_desc *desc)
{
- return !(desc->status & _IRQ_NOPROBE);
+ return !(desc->status_use_accessors & _IRQ_NOPROBE);
}
static inline void irq_settings_clr_noprobe(struct irq_desc *desc)
{
- desc->status &= ~_IRQ_NOPROBE;
+ desc->status_use_accessors &= ~_IRQ_NOPROBE;
}
static inline void irq_settings_set_noprobe(struct irq_desc *desc)
{
- desc->status |= _IRQ_NOPROBE;
+ desc->status_use_accessors |= _IRQ_NOPROBE;
}
static inline bool irq_settings_can_move_pcntxt(struct irq_desc *desc)
{
- return desc->status & _IRQ_MOVE_PCNTXT;
+ return desc->status_use_accessors & _IRQ_MOVE_PCNTXT;
}
static inline bool irq_settings_can_autoenable(struct irq_desc *desc)
{
- return !(desc->status & _IRQ_NOAUTOEN);
+ return !(desc->status_use_accessors & _IRQ_NOAUTOEN);
}
static inline bool irq_settings_is_nested_thread(struct irq_desc *desc)
{
- return desc->status & _IRQ_NESTED_THREAD;
+ return desc->status_use_accessors & _IRQ_NESTED_THREAD;
}
-
-/* Nothing should touch desc->status from now on */
-#undef status
-#define status USE_THE_PROPER_WRAPPERS_YOU_MORON
diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c
index dd586ebf9c8..dfbd550401b 100644
--- a/kernel/irq/spurious.c
+++ b/kernel/irq/spurious.c
@@ -45,12 +45,12 @@ bool irq_wait_for_poll(struct irq_desc *desc)
#ifdef CONFIG_SMP
do {
raw_spin_unlock(&desc->lock);
- while (desc->istate & IRQS_INPROGRESS)
+ while (irqd_irq_inprogress(&desc->irq_data))
cpu_relax();
raw_spin_lock(&desc->lock);
- } while (desc->istate & IRQS_INPROGRESS);
+ } while (irqd_irq_inprogress(&desc->irq_data));
/* Might have been disabled in meantime */
- return !(desc->istate & IRQS_DISABLED) && desc->action;
+ return !irqd_irq_disabled(&desc->irq_data) && desc->action;
#else
return false;
#endif
@@ -75,7 +75,7 @@ static int try_one_irq(int irq, struct irq_desc *desc, bool force)
* Do not poll disabled interrupts unless the spurious
* disabled poller asks explicitely.
*/
- if ((desc->istate & IRQS_DISABLED) && !force)
+ if (irqd_irq_disabled(&desc->irq_data) && !force)
goto out;
/*
@@ -88,12 +88,11 @@ static int try_one_irq(int irq, struct irq_desc *desc, bool force)
goto out;
/* Already running on another processor */
- if (desc->istate & IRQS_INPROGRESS) {
+ if (irqd_irq_inprogress(&desc->irq_data)) {
/*
* Already running: If it is shared get the other
* CPU to go looking for our mystery interrupt too
*/
- irq_compat_set_pending(desc);
desc->istate |= IRQS_PENDING;
goto out;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-30 20:45:36 +0000