c706c239af
As for PCI, we're able to populate the msi_domain field at probe time, provided that the device tree has an "msi-parent" property. Signed-off-by: Marc 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: Hanjun Guo <hanjun.guo@linaro.org> 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/1438091186-10244-9-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
93 lines
2.7 KiB
C
93 lines
2.7 KiB
C
#ifndef __OF_IRQ_H
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#define __OF_IRQ_H
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/irq.h>
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#include <linux/irqdomain.h>
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#include <linux/ioport.h>
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#include <linux/of.h>
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typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *);
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/*
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* Workarounds only applied to 32bit powermac machines
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*/
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#define OF_IMAP_OLDWORLD_MAC 0x00000001
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#define OF_IMAP_NO_PHANDLE 0x00000002
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#if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC)
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extern unsigned int of_irq_workarounds;
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extern struct device_node *of_irq_dflt_pic;
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extern int of_irq_parse_oldworld(struct device_node *device, int index,
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struct of_phandle_args *out_irq);
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#else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
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#define of_irq_workarounds (0)
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#define of_irq_dflt_pic (NULL)
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static inline int of_irq_parse_oldworld(struct device_node *device, int index,
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struct of_phandle_args *out_irq)
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{
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return -EINVAL;
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}
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#endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
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extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq);
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extern int of_irq_parse_one(struct device_node *device, int index,
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struct of_phandle_args *out_irq);
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extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data);
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extern int of_irq_to_resource(struct device_node *dev, int index,
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struct resource *r);
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extern void of_irq_init(const struct of_device_id *matches);
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#ifdef CONFIG_OF_IRQ
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extern int of_irq_count(struct device_node *dev);
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extern int of_irq_get(struct device_node *dev, int index);
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extern int of_irq_get_byname(struct device_node *dev, const char *name);
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extern int of_irq_to_resource_table(struct device_node *dev,
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struct resource *res, int nr_irqs);
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#else
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static inline int of_irq_count(struct device_node *dev)
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{
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return 0;
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}
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static inline int of_irq_get(struct device_node *dev, int index)
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{
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return 0;
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}
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static inline int of_irq_get_byname(struct device_node *dev, const char *name)
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{
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return 0;
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}
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static inline int of_irq_to_resource_table(struct device_node *dev,
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struct resource *res, int nr_irqs)
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{
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return 0;
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}
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#endif
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#if defined(CONFIG_OF)
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/*
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* irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC
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* implements it differently. However, the prototype is the same for all,
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* so declare it here regardless of the CONFIG_OF_IRQ setting.
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*/
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extern unsigned int irq_of_parse_and_map(struct device_node *node, int index);
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extern struct device_node *of_irq_find_parent(struct device_node *child);
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extern void of_msi_configure(struct device *dev, struct device_node *np);
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#else /* !CONFIG_OF */
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static inline unsigned int irq_of_parse_and_map(struct device_node *dev,
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int index)
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{
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return 0;
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}
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static inline void *of_irq_find_parent(struct device_node *child)
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{
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return NULL;
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}
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#endif /* !CONFIG_OF */
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#endif /* __OF_IRQ_H */
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