[RFC Part4 v1 06/17] genirq: Introduce callback irq_chip.irq_write_msi_msg
From: Jiang Liu <hidden>
Date: 2014-11-09 15:08:37
Also in:
linux-acpi, linux-pci, lkml
Subsystem:
irq subsystem, the rest · Maintainers:
Thomas Gleixner, Linus Torvalds
Introduce callback irq_chip.irq_write_msi_msg, so we could share common code among MSI alike interrupt controllers, such as HPET and DMAR. Signed-off-by: Jiang Liu <redacted> --- include/linux/irq.h | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 041edd6dc409..99aea9925b21 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h@@ -326,6 +326,7 @@ static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d) * @irq_release_resources: optional to release resources acquired with * irq_request_resources * @irq_compose_msi_msg: optional to compose message content for MSI + * @irq_write_msi_msg: optional to write message content for MSI * @flags: chip specific flags */ struct irq_chip {
@@ -363,6 +364,7 @@ struct irq_chip { void (*irq_release_resources)(struct irq_data *data); void (*irq_compose_msi_msg)(struct irq_data *data, struct msi_msg *msg); + void (*irq_write_msi_msg)(struct irq_data *data, struct msi_msg *msg); unsigned long flags; };
@@ -457,6 +459,12 @@ extern void irq_chip_ack_parent(struct irq_data *data); extern int irq_chip_retrigger_hierarchy(struct irq_data *data); #endif +static inline void irq_chip_write_msi_msg(struct irq_data *data, + struct msi_msg *msg) +{ + data->chip->irq_write_msi_msg(data, msg); +} + /* Handling of unhandled and spurious interrupts: */ extern void note_interrupt(unsigned int irq, struct irq_desc *desc, irqreturn_t action_ret);
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1.7.10.4