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genirq: Introduce callback irq_chip.irq_write_msi_msg
Introduce callback irq_chip.irq_write_msi_msg, so we can share common code among MSI alike interrupt controllers, such as HPET and DMAR. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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@ -322,6 +322,7 @@ static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d)
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* @irq_release_resources: optional to release resources acquired with
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* irq_request_resources
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* @irq_compose_msi_msg: optional to compose message content for MSI
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* @irq_write_msi_msg: optional to write message content for MSI
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* @flags: chip specific flags
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*/
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struct irq_chip {
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@ -359,6 +360,7 @@ struct irq_chip {
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void (*irq_release_resources)(struct irq_data *data);
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void (*irq_compose_msi_msg)(struct irq_data *data, struct msi_msg *msg);
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void (*irq_write_msi_msg)(struct irq_data *data, struct msi_msg *msg);
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unsigned long flags;
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};
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@ -459,6 +461,12 @@ extern int irq_chip_set_affinity_parent(struct irq_data *data,
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bool force);
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#endif
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static inline void irq_chip_write_msi_msg(struct irq_data *data,
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struct msi_msg *msg)
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{
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data->chip->irq_write_msi_msg(data, msg);
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}
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/* Handling of unhandled and spurious interrupts: */
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extern void note_interrupt(unsigned int irq, struct irq_desc *desc,
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irqreturn_t action_ret);
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