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Date: Thu, 04 Mar 2010 02:08:52 -0800
From: Yinghai Lu <yinghai@...nel.org>
To: Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
"H. Peter Anvin" <hpa@...or.com>,
Andrew Morton <akpm@...ux-foundation.org>
Cc: Suresh Siddha <suresh.b.siddha@...el.com>,
Eric Biederman <ebiederm@...ssion.com>,
linux-kernel@...r.kernel.org, Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH 05/12] genericirq: make irq_chip to have member with irq_desc
pointer
will have
void (*desc_ack)(struct irq_desc *desc);
void (*desc_mask)(struct irq_desc *desc);
void (*desc_mask_ack)(struct irq_desc *desc);
void (*desc_unmask)(struct irq_desc *desc);
void (*desc_eoi)(struct irq_desc *desc);
so for sparseirq with raidix tree, we don't call extra irq_to_desc, and could use desc directly
-v2: change all member of irq_chip to use desc only.
-v3: update after legacy_pic
according to Thomas, use other copy for new member with *desc, so could
make the transition more smooth
Signed-off-by: Yinghai Lu <yinghai@...nel.org>
---
include/linux/irq.h | 129 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 129 insertions(+), 0 deletions(-)
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 707ab12..b686d1e 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -110,6 +110,7 @@ struct msi_desc;
*/
struct irq_chip {
const char *name;
+
unsigned int (*startup)(unsigned int irq);
void (*shutdown)(unsigned int irq);
void (*enable)(unsigned int irq);
@@ -135,6 +136,34 @@ struct irq_chip {
#ifdef CONFIG_IRQ_RELEASE_METHOD
void (*release)(unsigned int irq, void *dev_id);
#endif
+
+ unsigned int (*desc_startup)(struct irq_desc *desc);
+ void (*desc_shutdown)(struct irq_desc *desc);
+ void (*desc_enable)(struct irq_desc *desc);
+ void (*desc_disable)(struct irq_desc *desc);
+
+ void (*desc_ack)(struct irq_desc *desc);
+ void (*desc_mask)(struct irq_desc *desc);
+ void (*desc_mask_ack)(struct irq_desc *desc);
+ void (*desc_unmask)(struct irq_desc *desc);
+ void (*desc_eoi)(struct irq_desc *desc);
+
+ void (*desc_end)(struct irq_desc *desc);
+ int (*desc_set_affinity)(struct irq_desc *desc,
+ const struct cpumask *dest);
+ int (*desc_retrigger)(struct irq_desc *desc);
+
+ int (*desc_set_type)(struct irq_desc *desc, unsigned int flow_type);
+ int (*desc_set_wake)(struct irq_desc *desc, unsigned int on);
+
+ void (*desc_bus_lock)(struct irq_desc *desc);
+ void (*desc_bus_sync_unlock)(struct irq_desc *desc);
+
+ /* Currently used only by UML, might disappear one day.*/
+#ifdef CONFIG_IRQ_RELEASE_METHOD
+ void (*desc_release)(struct irq_desc *desc, void *dev_id);
+#endif
+
/*
* For compatibility, ->typename is copied into ->name.
* Will disappear.
@@ -227,6 +256,106 @@ static inline struct irq_desc *move_irq_desc(struct irq_desc *desc, int node)
extern struct irq_desc *irq_to_desc_alloc_node(unsigned int irq, int node);
+static inline unsigned int
+desc_chip_startup(struct irq_chip *chip, unsigned int irq, struct irq_desc *desc)
+{
+ if (chip->desc_startup)
+ return chip->desc_startup(desc);
+ else if (chip->startup)
+ return chip->startup(irq);
+ return 0;
+}
+static inline void
+desc_chip_shutdown(struct irq_chip *chip, unsigned int irq, struct irq_desc *desc)
+{
+ if (chip->desc_shutdown)
+ chip->desc_shutdown(desc);
+ else if (chip->shutdown)
+ chip->shutdown(irq);
+}
+static inline void
+desc_chip_enable(struct irq_chip *chip, unsigned int irq, struct irq_desc *desc)
+{
+ if (chip->desc_enable)
+ chip->desc_enable(desc);
+ else if (chip->enable)
+ chip->enable(irq);
+}
+static inline void
+desc_chip_disable(struct irq_chip *chip, unsigned int irq, struct irq_desc *desc)
+{
+ if (chip->desc_disable)
+ chip->desc_disable(desc);
+ else if (chip->disable)
+ chip->disable(irq);
+}
+static inline void
+desc_chip_ack(struct irq_chip *chip, unsigned int irq, struct irq_desc *desc)
+{
+ if (chip->desc_ack)
+ chip->desc_ack(desc);
+ else if (chip->ack)
+ chip->ack(irq);
+}
+static inline void
+desc_chip_mask(struct irq_chip *chip, unsigned int irq, struct irq_desc *desc)
+{
+ if (chip->desc_mask)
+ chip->desc_mask(desc);
+ else if (chip->mask)
+ chip->mask(irq);
+}
+static inline void
+desc_chip_mask_ack(struct irq_chip *chip, unsigned int irq, struct irq_desc *desc)
+{
+ if (chip->desc_mask_ack)
+ chip->desc_mask_ack(desc);
+ else if (chip->mask_ack)
+ chip->mask_ack(irq);
+}
+static inline void
+desc_chip_unmask(struct irq_chip *chip, unsigned int irq, struct irq_desc *desc)
+{
+ if (chip->desc_unmask)
+ chip->desc_unmask(desc);
+ else if (chip->unmask)
+ chip->unmask(irq);
+}
+static inline void
+desc_chip_eoi(struct irq_chip *chip, unsigned int irq, struct irq_desc *desc)
+{
+ if (chip->desc_eoi)
+ chip->desc_eoi(desc);
+ else if (chip->eoi)
+ chip->eoi(irq);
+}
+static inline void
+desc_chip_end(struct irq_chip *chip, unsigned int irq, struct irq_desc *desc)
+{
+ if (chip->desc_end)
+ chip->desc_end(desc);
+ else if (chip->end)
+ chip->end(irq);
+}
+static inline int
+desc_chip_set_affinity(struct irq_chip *chip, unsigned int irq, struct irq_desc *desc, const struct cpumask *dest)
+{
+ if (chip->desc_set_affinity)
+ return chip->desc_set_affinity(desc, dest);
+ else if (chip->set_affinity)
+ return chip->set_affinity(irq, dest);
+ return 0;
+}
+static inline int
+desc_chip_retrigger(struct irq_chip *chip, unsigned int irq, struct irq_desc *desc)
+{
+ if (chip->desc_retrigger)
+ return chip->desc_retrigger(desc);
+ else if (chip->startup)
+ return chip->retrigger(irq);
+ return 0;
+}
+
/*
* Pick up the arch-dependent methods:
*/
--
1.6.4.2
--
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