From mboxrd@z Thu Jan 1 00:00:00 1970 From: jiang.liu@linux.intel.com (Jiang Liu) Date: Sun, 9 Nov 2014 23:10:28 +0800 Subject: [RFC Part4 v1 06/17] genirq: Introduce callback irq_chip.irq_write_msi_msg In-Reply-To: <1415545839-28263-1-git-send-email-jiang.liu@linux.intel.com> References: <1415545839-28263-1-git-send-email-jiang.liu@linux.intel.com> Message-ID: <1415545839-28263-7-git-send-email-jiang.liu@linux.intel.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- 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); -- 1.7.10.4