#include "internals.h"
/**
- * set_irq_chip - set the irq chip for an irq
+ * irq_set_chip - set the irq chip for an irq
* @irq: irq number
* @chip: pointer to irq chip description structure
*/
-int set_irq_chip(unsigned int irq, struct irq_chip *chip)
+int irq_set_chip(unsigned int irq, struct irq_chip *chip)
{
struct irq_desc *desc = irq_to_desc(irq);
unsigned long flags;
return 0;
}
-EXPORT_SYMBOL(set_irq_chip);
+EXPORT_SYMBOL(irq_set_chip);
/**
- * set_irq_type - set the irq trigger type for an irq
+ * irq_set_type - set the irq trigger type for an irq
* @irq: irq number
* @type: IRQ_TYPE_{LEVEL,EDGE}_* value - see include/linux/irq.h
*/
-int set_irq_type(unsigned int irq, unsigned int type)
+int irq_set_irq_type(unsigned int irq, unsigned int type)
{
struct irq_desc *desc = irq_to_desc(irq);
unsigned long flags;
if (type == IRQ_TYPE_NONE)
return 0;
+ chip_bus_lock(desc);
raw_spin_lock_irqsave(&desc->lock, flags);
ret = __irq_set_trigger(desc, irq, type);
raw_spin_unlock_irqrestore(&desc->lock, flags);
+ chip_bus_sync_unlock(desc);
return ret;
}
-EXPORT_SYMBOL(set_irq_type);
+EXPORT_SYMBOL(irq_set_irq_type);
/**
- * set_irq_data - set irq type data for an irq
+ * irq_set_handler_data - set irq handler data for an irq
* @irq: Interrupt number
* @data: Pointer to interrupt specific data
*
* Set the hardware irq controller data for an irq
*/
-int set_irq_data(unsigned int irq, void *data)
+int irq_set_handler_data(unsigned int irq, void *data)
{
struct irq_desc *desc = irq_to_desc(irq);
unsigned long flags;
raw_spin_unlock_irqrestore(&desc->lock, flags);
return 0;
}
-EXPORT_SYMBOL(set_irq_data);
+EXPORT_SYMBOL(irq_set_handler_data);
/**
- * set_irq_msi - set MSI descriptor data for an irq
+ * irq_set_msi_desc - set MSI descriptor data for an irq
* @irq: Interrupt number
* @entry: Pointer to MSI descriptor data
*
* Set the MSI descriptor entry for an irq
*/
-int set_irq_msi(unsigned int irq, struct msi_desc *entry)
+int irq_set_msi_desc(unsigned int irq, struct msi_desc *entry)
{
struct irq_desc *desc = irq_to_desc(irq);
unsigned long flags;
}
/**
- * set_irq_chip_data - set irq chip data for an irq
+ * irq_set_chip_data - set irq chip data for an irq
* @irq: Interrupt number
* @data: Pointer to chip specific data
*
* Set the hardware irq chip data for an irq
*/
-int set_irq_chip_data(unsigned int irq, void *data)
+int irq_set_chip_data(unsigned int irq, void *data)
{
struct irq_desc *desc = irq_to_desc(irq);
unsigned long flags;
return 0;
}
-EXPORT_SYMBOL(set_irq_chip_data);
+EXPORT_SYMBOL(irq_set_chip_data);
struct irq_data *irq_get_irq_data(unsigned int irq)
{
}
EXPORT_SYMBOL_GPL(irq_get_irq_data);
-/**
- * set_irq_nested_thread - Set/Reset the IRQ_NESTED_THREAD flag of an irq
- *
- * @irq: Interrupt number
- * @nest: 0 to clear / 1 to set the IRQ_NESTED_THREAD flag
- *
- * The IRQ_NESTED_THREAD flag indicates that on
- * request_threaded_irq() no separate interrupt thread should be
- * created for the irq as the handler are called nested in the
- * context of a demultiplexing interrupt handler thread.
- */
-void set_irq_nested_thread(unsigned int irq, int nest)
+static void irq_state_clr_disabled(struct irq_desc *desc)
{
- struct irq_desc *desc = irq_to_desc(irq);
- unsigned long flags;
-
- if (!desc)
- return;
-
- raw_spin_lock_irqsave(&desc->lock, flags);
- if (nest)
- desc->status |= IRQ_NESTED_THREAD;
- else
- desc->status &= ~IRQ_NESTED_THREAD;
- raw_spin_unlock_irqrestore(&desc->lock, flags);
+ desc->istate &= ~IRQS_DISABLED;
+ irq_compat_clr_disabled(desc);
}
-EXPORT_SYMBOL_GPL(set_irq_nested_thread);
-/*
- * default enable function
- */
-static void default_enable(struct irq_data *data)
+static void irq_state_set_disabled(struct irq_desc *desc)
{
- struct irq_desc *desc = irq_data_to_desc(data);
+ desc->istate |= IRQS_DISABLED;
+ irq_compat_set_disabled(desc);
+}
- desc->irq_data.chip->irq_unmask(&desc->irq_data);
- desc->status &= ~IRQ_MASKED;
+static void irq_state_clr_masked(struct irq_desc *desc)
+{
+ desc->istate &= ~IRQS_MASKED;
+ irq_compat_clr_masked(desc);
}
-/*
- * default disable function
- */
-static void default_disable(struct irq_data *data)
+static void irq_state_set_masked(struct irq_desc *desc)
{
+ desc->istate |= IRQS_MASKED;
+ irq_compat_set_masked(desc);
}
-/*
- * default startup function
- */
-static unsigned int default_startup(struct irq_data *data)
+int irq_startup(struct irq_desc *desc)
{
- struct irq_desc *desc = irq_data_to_desc(data);
+ irq_state_clr_disabled(desc);
+ desc->depth = 0;
- desc->irq_data.chip->irq_enable(data);
+ if (desc->irq_data.chip->irq_startup) {
+ int ret = desc->irq_data.chip->irq_startup(&desc->irq_data);
+ irq_state_clr_masked(desc);
+ return ret;
+ }
+
+ irq_enable(desc);
return 0;
}
-/*
- * default shutdown function
- */
-static void default_shutdown(struct irq_data *data)
+void irq_shutdown(struct irq_desc *desc)
{
- struct irq_desc *desc = irq_data_to_desc(data);
+ irq_state_set_disabled(desc);
+ desc->depth = 1;
+ if (desc->irq_data.chip->irq_shutdown)
+ desc->irq_data.chip->irq_shutdown(&desc->irq_data);
+ if (desc->irq_data.chip->irq_disable)
+ desc->irq_data.chip->irq_disable(&desc->irq_data);
+ else
+ desc->irq_data.chip->irq_mask(&desc->irq_data);
+ irq_state_set_masked(desc);
+}
- desc->irq_data.chip->irq_mask(&desc->irq_data);
- desc->status |= IRQ_MASKED;
+void irq_enable(struct irq_desc *desc)
+{
+ irq_state_clr_disabled(desc);
+ if (desc->irq_data.chip->irq_enable)
+ desc->irq_data.chip->irq_enable(&desc->irq_data);
+ else
+ desc->irq_data.chip->irq_unmask(&desc->irq_data);
+ irq_state_clr_masked(desc);
+}
+
+void irq_disable(struct irq_desc *desc)
+{
+ irq_state_set_disabled(desc);
+ if (desc->irq_data.chip->irq_disable) {
+ desc->irq_data.chip->irq_disable(&desc->irq_data);
+ }
+ irq_state_set_masked(desc);
}
#ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED
void irq_chip_set_defaults(struct irq_chip *chip)
{
#ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED
- /*
- * Compat fixup functions need to be before we set the
- * defaults for enable/disable/startup/shutdown
- */
if (chip->enable)
chip->irq_enable = compat_irq_enable;
if (chip->disable)
chip->irq_shutdown = compat_irq_shutdown;
if (chip->startup)
chip->irq_startup = compat_irq_startup;
-#endif
- /*
- * The real defaults
- */
- if (!chip->irq_enable)
- chip->irq_enable = default_enable;
- if (!chip->irq_disable)
- chip->irq_disable = default_disable;
- if (!chip->irq_startup)
- chip->irq_startup = default_startup;
- /*
- * We use chip->irq_disable, when the user provided its own. When
- * we have default_disable set for chip->irq_disable, then we need
- * to use default_shutdown, otherwise the irq line is not
- * disabled on free_irq():
- */
- if (!chip->irq_shutdown)
- chip->irq_shutdown = chip->irq_disable != default_disable ?
- chip->irq_disable : default_shutdown;
-
-#ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED
if (!chip->end)
chip->end = dummy_irq_chip.end;
-
- /*
- * Now fix up the remaining compat handlers
- */
if (chip->bus_lock)
chip->irq_bus_lock = compat_bus_lock;
if (chip->bus_sync_unlock)
if (desc->irq_data.chip->irq_ack)
desc->irq_data.chip->irq_ack(&desc->irq_data);
}
- desc->status |= IRQ_MASKED;
+ irq_state_set_masked(desc);
}
static inline void mask_irq(struct irq_desc *desc)
{
if (desc->irq_data.chip->irq_mask) {
desc->irq_data.chip->irq_mask(&desc->irq_data);
- desc->status |= IRQ_MASKED;
+ irq_state_set_masked(desc);
}
}
{
if (desc->irq_data.chip->irq_unmask) {
desc->irq_data.chip->irq_unmask(&desc->irq_data);
- desc->status &= ~IRQ_MASKED;
+ irq_state_clr_masked(desc);
}
}
kstat_incr_irqs_this_cpu(irq, desc);
action = desc->action;
- if (unlikely(!action || (desc->status & IRQ_DISABLED)))
+ if (unlikely(!action || (desc->istate & IRQS_DISABLED)))
goto out_unlock;
- desc->status |= IRQ_INPROGRESS;
+ irq_compat_set_progress(desc);
+ desc->istate |= IRQS_INPROGRESS;
raw_spin_unlock_irq(&desc->lock);
action_ret = action->thread_fn(action->irq, action->dev_id);
note_interrupt(irq, desc, action_ret);
raw_spin_lock_irq(&desc->lock);
- desc->status &= ~IRQ_INPROGRESS;
+ desc->istate &= ~IRQS_INPROGRESS;
+ irq_compat_clr_progress(desc);
out_unlock:
raw_spin_unlock_irq(&desc->lock);
}
EXPORT_SYMBOL_GPL(handle_nested_irq);
+static bool irq_check_poll(struct irq_desc *desc)
+{
+ if (!(desc->istate & IRQS_POLL_INPROGRESS))
+ return false;
+ return irq_wait_for_poll(desc);
+}
+
/**
* handle_simple_irq - Simple and software-decoded IRQs.
* @irq: the interrupt number
void
handle_simple_irq(unsigned int irq, struct irq_desc *desc)
{
- struct irqaction *action;
- irqreturn_t action_ret;
-
raw_spin_lock(&desc->lock);
- if (unlikely(desc->status & IRQ_INPROGRESS))
- goto out_unlock;
- desc->status &= ~(IRQ_REPLAY | IRQ_WAITING);
+ if (unlikely(desc->istate & IRQS_INPROGRESS))
+ if (!irq_check_poll(desc))
+ goto out_unlock;
+
+ desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);
kstat_incr_irqs_this_cpu(irq, desc);
- action = desc->action;
- if (unlikely(!action || (desc->status & IRQ_DISABLED)))
+ if (unlikely(!desc->action || (desc->istate & IRQS_DISABLED)))
goto out_unlock;
- desc->status |= IRQ_INPROGRESS;
- raw_spin_unlock(&desc->lock);
-
- action_ret = handle_IRQ_event(irq, action);
- if (!noirqdebug)
- note_interrupt(irq, desc, action_ret);
+ handle_irq_event(desc);
- raw_spin_lock(&desc->lock);
- desc->status &= ~IRQ_INPROGRESS;
out_unlock:
raw_spin_unlock(&desc->lock);
}
void
handle_level_irq(unsigned int irq, struct irq_desc *desc)
{
- struct irqaction *action;
- irqreturn_t action_ret;
-
raw_spin_lock(&desc->lock);
mask_ack_irq(desc);
- if (unlikely(desc->status & IRQ_INPROGRESS))
- goto out_unlock;
- desc->status &= ~(IRQ_REPLAY | IRQ_WAITING);
+ if (unlikely(desc->istate & IRQS_INPROGRESS))
+ if (!irq_check_poll(desc))
+ goto out_unlock;
+
+ desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);
kstat_incr_irqs_this_cpu(irq, desc);
/*
* If its disabled or no action available
* keep it masked and get out of here
*/
- action = desc->action;
- if (unlikely(!action || (desc->status & IRQ_DISABLED)))
+ if (unlikely(!desc->action || (desc->istate & IRQS_DISABLED)))
goto out_unlock;
- desc->status |= IRQ_INPROGRESS;
- raw_spin_unlock(&desc->lock);
+ handle_irq_event(desc);
- action_ret = handle_IRQ_event(irq, action);
- if (!noirqdebug)
- note_interrupt(irq, desc, action_ret);
-
- raw_spin_lock(&desc->lock);
- desc->status &= ~IRQ_INPROGRESS;
-
- if (!(desc->status & (IRQ_DISABLED | IRQ_ONESHOT)))
+ if (!(desc->istate & (IRQS_DISABLED | IRQS_ONESHOT)))
unmask_irq(desc);
out_unlock:
raw_spin_unlock(&desc->lock);
void
handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc)
{
- struct irqaction *action;
- irqreturn_t action_ret;
-
raw_spin_lock(&desc->lock);
- if (unlikely(desc->status & IRQ_INPROGRESS))
- goto out;
+ if (unlikely(desc->istate & IRQS_INPROGRESS))
+ if (!irq_check_poll(desc))
+ goto out;
- desc->status &= ~(IRQ_REPLAY | IRQ_WAITING);
+ desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);
kstat_incr_irqs_this_cpu(irq, desc);
/*
* If its disabled or no action available
* then mask it and get out of here:
*/
- action = desc->action;
- if (unlikely(!action || (desc->status & IRQ_DISABLED))) {
- desc->status |= IRQ_PENDING;
+ if (unlikely(!desc->action || (desc->istate & IRQS_DISABLED))) {
+ irq_compat_set_pending(desc);
+ desc->istate |= IRQS_PENDING;
mask_irq(desc);
goto out;
}
-
- desc->status |= IRQ_INPROGRESS;
- desc->status &= ~IRQ_PENDING;
- raw_spin_unlock(&desc->lock);
-
- action_ret = handle_IRQ_event(irq, action);
- if (!noirqdebug)
- note_interrupt(irq, desc, action_ret);
-
- raw_spin_lock(&desc->lock);
- desc->status &= ~IRQ_INPROGRESS;
+ handle_irq_event(desc);
out:
desc->irq_data.chip->irq_eoi(&desc->irq_data);
-
raw_spin_unlock(&desc->lock);
}
{
raw_spin_lock(&desc->lock);
- desc->status &= ~(IRQ_REPLAY | IRQ_WAITING);
-
+ 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((desc->status & (IRQ_INPROGRESS | IRQ_DISABLED)) ||
- !desc->action)) {
- desc->status |= (IRQ_PENDING | IRQ_MASKED);
- mask_ack_irq(desc);
- goto out_unlock;
+ if (unlikely((desc->istate & (IRQS_DISABLED | IRQS_INPROGRESS) ||
+ !desc->action))) {
+ if (!irq_check_poll(desc)) {
+ irq_compat_set_pending(desc);
+ desc->istate |= IRQS_PENDING;
+ mask_ack_irq(desc);
+ goto out_unlock;
+ }
}
kstat_incr_irqs_this_cpu(irq, desc);
/* Start handling the irq */
desc->irq_data.chip->irq_ack(&desc->irq_data);
- /* Mark the IRQ currently in progress.*/
- desc->status |= IRQ_INPROGRESS;
-
do {
- struct irqaction *action = desc->action;
- irqreturn_t action_ret;
-
- if (unlikely(!action)) {
+ if (unlikely(!desc->action)) {
mask_irq(desc);
goto out_unlock;
}
* one, we could have masked the irq.
* Renable it, if it was not disabled in meantime.
*/
- if (unlikely((desc->status &
- (IRQ_PENDING | IRQ_MASKED | IRQ_DISABLED)) ==
- (IRQ_PENDING | IRQ_MASKED))) {
- unmask_irq(desc);
+ if (unlikely(desc->istate & IRQS_PENDING)) {
+ if (!(desc->istate & IRQS_DISABLED) &&
+ (desc->istate & IRQS_MASKED))
+ unmask_irq(desc);
}
- desc->status &= ~IRQ_PENDING;
- raw_spin_unlock(&desc->lock);
- action_ret = handle_IRQ_event(irq, action);
- if (!noirqdebug)
- note_interrupt(irq, desc, action_ret);
- raw_spin_lock(&desc->lock);
+ handle_irq_event(desc);
- } while ((desc->status & (IRQ_PENDING | IRQ_DISABLED)) == IRQ_PENDING);
+ } while ((desc->istate & IRQS_PENDING) &&
+ !(desc->istate & IRQS_DISABLED));
- desc->status &= ~IRQ_INPROGRESS;
out_unlock:
raw_spin_unlock(&desc->lock);
}
void
handle_percpu_irq(unsigned int irq, struct irq_desc *desc)
{
- irqreturn_t action_ret;
+ struct irq_chip *chip = irq_desc_get_chip(desc);
kstat_incr_irqs_this_cpu(irq, desc);
- if (desc->irq_data.chip->irq_ack)
- desc->irq_data.chip->irq_ack(&desc->irq_data);
+ if (chip->irq_ack)
+ chip->irq_ack(&desc->irq_data);
- action_ret = handle_IRQ_event(irq, desc->action);
- if (!noirqdebug)
- note_interrupt(irq, desc, action_ret);
+ handle_irq_event_percpu(desc, desc->action);
- if (desc->irq_data.chip->irq_eoi)
- desc->irq_data.chip->irq_eoi(&desc->irq_data);
+ if (chip->irq_eoi)
+ chip->irq_eoi(&desc->irq_data);
}
void
if (handle == handle_bad_irq) {
if (desc->irq_data.chip != &no_irq_chip)
mask_ack_irq(desc);
- desc->status |= IRQ_DISABLED;
+ irq_compat_set_disabled(desc);
+ desc->istate |= IRQS_DISABLED;
desc->depth = 1;
}
desc->handle_irq = handle;
desc->name = name;
if (handle != handle_bad_irq && is_chained) {
- desc->status &= ~IRQ_DISABLED;
desc->status |= IRQ_NOREQUEST | IRQ_NOPROBE;
- desc->depth = 0;
- desc->irq_data.chip->irq_startup(&desc->irq_data);
+ irq_startup(desc);
}
raw_spin_unlock_irqrestore(&desc->lock, flags);
chip_bus_sync_unlock(desc);
set_irq_chip_and_handler(unsigned int irq, struct irq_chip *chip,
irq_flow_handler_t handle)
{
- set_irq_chip(irq, chip);
+ irq_set_chip(irq, chip);
__set_irq_handler(irq, handle, 0, NULL);
}
set_irq_chip_and_handler_name(unsigned int irq, struct irq_chip *chip,
irq_flow_handler_t handle, const char *name)
{
- set_irq_chip(irq, chip);
+ irq_set_chip(irq, chip);
__set_irq_handler(irq, handle, 0, name);
}
if (!desc)
return;
- /* Sanitize flags */
- set &= IRQF_MODIFY_MASK;
- clr &= IRQF_MODIFY_MASK;
-
raw_spin_lock_irqsave(&desc->lock, flags);
- desc->status &= ~clr;
- desc->status |= set;
+
+ irq_settings_clr_and_set(desc, clr, set);
+
+ irqd_clear(&desc->irq_data, IRQD_NO_BALANCING | IRQD_PER_CPU |
+ IRQD_TRIGGER_MASK | IRQD_LEVEL);
+ if (irq_settings_has_no_balance_set(desc))
+ irqd_set(&desc->irq_data, IRQD_NO_BALANCING);
+ if (irq_settings_is_per_cpu(desc))
+ irqd_set(&desc->irq_data, IRQD_PER_CPU);
+
+ irqd_set(&desc->irq_data, irq_settings_get_trigger_mask(desc));
+
raw_spin_unlock_irqrestore(&desc->lock, flags);
}
projects / mirror_ubuntu-zesty-kernel.git / blobdiff