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authorJiang Liu <jiang.liu@linux.intel.com>2015-06-01 16:05:12 +0800
committerThomas Gleixner <tglx@linutronix.de>2015-06-12 16:54:21 +0200
commit0d0b4c866bcce647f40d73efe5e90aeeb079050a (patch)
tree9a4dc1dd5f52dcc5b4455c3e75c2678b393bc06d /include/linux/irq.h
parent77ed42f18edd486e9994ccd1f174076309a6343f (diff)
downloadop-kernel-dev-0d0b4c866bcce647f40d73efe5e90aeeb079050a.zip
op-kernel-dev-0d0b4c866bcce647f40d73efe5e90aeeb079050a.tar.gz
genirq: Introduce struct irq_common_data to host shared irq data
With the introduction of hierarchy irqdomain, struct irq_data becomes per-chip instead of per-irq and there may be multiple irq_datas associated with the same irq. Some per-irq data stored in struct irq_data now may get duplicated into multiple irq_datas, and causes inconsistent view. So introduce struct irq_common_data to host per-irq common data and to achieve consistent view among irq_chips. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Kevin Cernekee <cernekee@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Marc Zyngier <marc.zyngier@arm.com> Link: http://lkml.kernel.org/r/1433145945-789-4-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/irq.h')
-rw-r--r--include/linux/irq.h54
1 files changed, 32 insertions, 22 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 48cb7d1..3c7fbe4 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -126,13 +126,21 @@ struct msi_desc;
struct irq_domain;
/**
- * struct irq_data - per irq and irq chip data passed down to chip functions
+ * struct irq_common_data - per irq data shared by all irqchips
+ * @state_use_accessors: status information for irq chip functions.
+ * Use accessor functions to deal with it
+ */
+struct irq_common_data {
+ unsigned int state_use_accessors;
+};
+
+/**
+ * struct irq_data - per irq chip data passed down to chip functions
* @mask: precomputed bitmask for accessing the chip registers
* @irq: interrupt number
* @hwirq: hardware interrupt number, local to the interrupt domain
* @node: node index useful for balancing
- * @state_use_accessors: status information for irq chip functions.
- * Use accessor functions to deal with it
+ * @common: point to data shared by all irqchips
* @chip: low level interrupt hardware access
* @domain: Interrupt translation domain; responsible for mapping
* between hwirq number and linux irq number.
@@ -153,7 +161,7 @@ struct irq_data {
unsigned int irq;
unsigned long hwirq;
unsigned int node;
- unsigned int state_use_accessors;
+ struct irq_common_data *common;
struct irq_chip *chip;
struct irq_domain *domain;
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
@@ -166,7 +174,7 @@ struct irq_data {
};
/*
- * Bit masks for irq_data.state
+ * Bit masks for irq_common_data.state_use_accessors
*
* IRQD_TRIGGER_MASK - Mask for the trigger type bits
* IRQD_SETAFFINITY_PENDING - Affinity setting is pending
@@ -198,34 +206,36 @@ enum {
IRQD_WAKEUP_ARMED = (1 << 19),
};
+#define __irqd_to_state(d) ((d)->common->state_use_accessors)
+
static inline bool irqd_is_setaffinity_pending(struct irq_data *d)
{
- return d->state_use_accessors & IRQD_SETAFFINITY_PENDING;
+ return __irqd_to_state(d) & IRQD_SETAFFINITY_PENDING;
}
static inline bool irqd_is_per_cpu(struct irq_data *d)
{
- return d->state_use_accessors & IRQD_PER_CPU;
+ return __irqd_to_state(d) & IRQD_PER_CPU;
}
static inline bool irqd_can_balance(struct irq_data *d)
{
- return !(d->state_use_accessors & (IRQD_PER_CPU | IRQD_NO_BALANCING));
+ return !(__irqd_to_state(d) & (IRQD_PER_CPU | IRQD_NO_BALANCING));
}
static inline bool irqd_affinity_was_set(struct irq_data *d)
{
- return d->state_use_accessors & IRQD_AFFINITY_SET;
+ return __irqd_to_state(d) & IRQD_AFFINITY_SET;
}
static inline void irqd_mark_affinity_was_set(struct irq_data *d)
{
- d->state_use_accessors |= IRQD_AFFINITY_SET;
+ __irqd_to_state(d) |= IRQD_AFFINITY_SET;
}
static inline u32 irqd_get_trigger_type(struct irq_data *d)
{
- return d->state_use_accessors & IRQD_TRIGGER_MASK;
+ return __irqd_to_state(d) & IRQD_TRIGGER_MASK;
}
/*
@@ -233,43 +243,43 @@ static inline u32 irqd_get_trigger_type(struct irq_data *d)
*/
static inline void irqd_set_trigger_type(struct irq_data *d, u32 type)
{
- d->state_use_accessors &= ~IRQD_TRIGGER_MASK;
- d->state_use_accessors |= type & IRQD_TRIGGER_MASK;
+ __irqd_to_state(d) &= ~IRQD_TRIGGER_MASK;
+ __irqd_to_state(d) |= type & IRQD_TRIGGER_MASK;
}
static inline bool irqd_is_level_type(struct irq_data *d)
{
- return d->state_use_accessors & IRQD_LEVEL;
+ return __irqd_to_state(d) & IRQD_LEVEL;
}
static inline bool irqd_is_wakeup_set(struct irq_data *d)
{
- return d->state_use_accessors & IRQD_WAKEUP_STATE;
+ return __irqd_to_state(d) & IRQD_WAKEUP_STATE;
}
static inline bool irqd_can_move_in_process_context(struct irq_data *d)
{
- return d->state_use_accessors & IRQD_MOVE_PCNTXT;
+ return __irqd_to_state(d) & IRQD_MOVE_PCNTXT;
}
static inline bool irqd_irq_disabled(struct irq_data *d)
{
- return d->state_use_accessors & IRQD_IRQ_DISABLED;
+ return __irqd_to_state(d) & IRQD_IRQ_DISABLED;
}
static inline bool irqd_irq_masked(struct irq_data *d)
{
- return d->state_use_accessors & IRQD_IRQ_MASKED;
+ return __irqd_to_state(d) & IRQD_IRQ_MASKED;
}
static inline bool irqd_irq_inprogress(struct irq_data *d)
{
- return d->state_use_accessors & IRQD_IRQ_INPROGRESS;
+ return __irqd_to_state(d) & IRQD_IRQ_INPROGRESS;
}
static inline bool irqd_is_wakeup_armed(struct irq_data *d)
{
- return d->state_use_accessors & IRQD_WAKEUP_ARMED;
+ return __irqd_to_state(d) & IRQD_WAKEUP_ARMED;
}
@@ -280,12 +290,12 @@ static inline bool irqd_is_wakeup_armed(struct irq_data *d)
*/
static inline void irqd_set_chained_irq_inprogress(struct irq_data *d)
{
- d->state_use_accessors |= IRQD_IRQ_INPROGRESS;
+ __irqd_to_state(d) |= IRQD_IRQ_INPROGRESS;
}
static inline void irqd_clr_chained_irq_inprogress(struct irq_data *d)
{
- d->state_use_accessors &= ~IRQD_IRQ_INPROGRESS;
+ __irqd_to_state(d) &= ~IRQD_IRQ_INPROGRESS;
}
static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d)
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