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| author | Jiang Liu <jiang.liu@linux.intel.com> | 2014-11-06 22:20:17 +0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2014-11-23 13:01:46 +0100 |
| commit | 515085ef7ee74694bc9b02bc45196452defad59a (patch) | |
| tree | e72aeb0216fcdcd1e91b26a4dacd118ee6b6a0c9 /include/linux/irq.h | |
| parent | 56e8abab615e0c5858cfb9fa0015a44641762b9d (diff) | |
| download | lwn-515085ef7ee74694bc9b02bc45196452defad59a.tar.gz lwn-515085ef7ee74694bc9b02bc45196452defad59a.zip | |
genirq: Introduce irq_chip.irq_compose_msi_msg() to support stacked irqchip
Add callback irq_compose_msi_msg to struct irq_chip, which will be used
to support stacked irqchip.
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>
Diffstat (limited to 'include/linux/irq.h')
| -rw-r--r-- | include/linux/irq.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h index fad4bf6f15f6..d58e58935465 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -29,6 +29,7 @@ struct seq_file; struct module; struct irq_desc; struct irq_data; +struct msi_msg; typedef void (*irq_flow_handler_t)(unsigned int irq, struct irq_desc *desc); typedef void (*irq_preflow_handler_t)(struct irq_data *data); @@ -320,6 +321,7 @@ static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d) * any other callback related to this irq * @irq_release_resources: optional to release resources acquired with * irq_request_resources + * @irq_compose_msi_msg: optional to compose message content for MSI * @flags: chip specific flags */ struct irq_chip { @@ -356,6 +358,8 @@ struct irq_chip { int (*irq_request_resources)(struct irq_data *data); void (*irq_release_resources)(struct irq_data *data); + void (*irq_compose_msi_msg)(struct irq_data *data, struct msi_msg *msg); + unsigned long flags; }; @@ -443,6 +447,7 @@ extern void handle_percpu_devid_irq(unsigned int irq, struct irq_desc *desc); extern void handle_bad_irq(unsigned int irq, struct irq_desc *desc); extern void handle_nested_irq(unsigned int irq); +extern int irq_chip_compose_msi_msg(struct irq_data *data, struct msi_msg *msg); #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY extern void irq_chip_ack_parent(struct irq_data *data); extern int irq_chip_retrigger_hierarchy(struct irq_data *data); |