From: Jiang Liu <jiang....@linux.intel.com>
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....@linux.intel.com>
Cc: Bjorn Helgaas <bhelg...@google.com>
Cc: Grant Likely <grant.lik...@linaro.org>
Cc: Marc Zyngier <marc.zyng...@arm.com>
Cc: Yingjoe Chen <yingjoe.c...@mediatek.com>
Cc: Yijing Wang <wangyij...@huawei.com>
Signed-off-by: Thomas Gleixner <t...@linutronix.de>
---
include/linux/irq.h | 8 ++++++++
1 file changed, 8 insertions(+)
Index: tip/include/linux/irq.h
===================================================================
--- tip.orig/include/linux/irq.h
+++ tip/include/linux/irq.h
@@ -322,6 +322,7 @@ static inline irq_hw_number_t irqd_to_hw
* @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 {
@@ -359,6 +360,7 @@ 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;
};
@@ -453,6 +455,12 @@ extern void irq_chip_ack_parent(struct i
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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