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Commit f1421db8 authored by Marc Zyngier's avatar Marc Zyngier Committed by Thomas Gleixner
Browse files

device core: Introduce per-device MSI domain pointer 



As MSI-type features are creeping into non-PCI devices, it is
starting to make sense to give our struct device some form of
support for this, by allowing a pointer to an MSI irq domain to
be set/retrieved.

Reviewed-by: default avatarHanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Yijing Wang <wangyijing@huawei.com>
Cc: Ma Jun <majun258@huawei.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Duc Dang <dhdang@apm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1438091186-10244-4-git-send-email-marc.zyngier@arm.com


Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 0380839d

include/linux/device.h

+20 −0
Original line number Original line Diff line number Diff line
@@ -715,6 +715,7 @@ struct device_dma_parameters { 
 * @pins:	For device pin management.

 * @pins:	For device pin management.

 *		See Documentation/pinctrl.txt for details.

 *		See Documentation/pinctrl.txt for details.

 * @msi_list:	Hosts MSI descriptors

 * @msi_list:	Hosts MSI descriptors

 * @msi_domain: The generic MSI domain this device is using.

 * @numa_node:	NUMA node this device is close to.

 * @numa_node:	NUMA node this device is close to.

 * @dma_mask:	Dma mask (if dma'ble device).

 * @dma_mask:	Dma mask (if dma'ble device).

 * @coherent_dma_mask: Like dma_mask, but for alloc_coherent mapping as not all

 * @coherent_dma_mask: Like dma_mask, but for alloc_coherent mapping as not all
@@ -775,6 +776,9 @@ struct device { 
	struct dev_pm_info	power;

	struct dev_pm_info	power;

	struct dev_pm_domain	*pm_domain;

	struct dev_pm_domain	*pm_domain;





#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN

	struct irq_domain	*msi_domain;

#endif

#ifdef CONFIG_PINCTRL

#ifdef CONFIG_PINCTRL

	struct dev_pin_info	*pins;

	struct dev_pin_info	*pins;

#endif

#endif
@@ -865,6 +869,22 @@ static inline void set_dev_node(struct device *dev, int node) 
}

}

#endif

#endif





static inline struct irq_domain *dev_get_msi_domain(const struct device *dev)

{

#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN

	return dev->msi_domain;

#else

	return NULL;

#endif

}



static inline void dev_set_msi_domain(struct device *dev, struct irq_domain *d)

{

#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN

	dev->msi_domain = d;

#endif

}



static inline void *dev_get_drvdata(const struct device *dev)

static inline void *dev_get_drvdata(const struct device *dev)

{

{

	return dev->driver_data;

	return dev->driver_data;