4 #include <linux/kobject.h>
5 #include <linux/list.h>
8 u32 address_lo; /* low 32 bits of msi message address */
9 u32 address_hi; /* high 32 bits of msi message address */
10 u32 data; /* 16 bits of msi message data */
13 /* Helper functions */
16 void mask_msi_irq(struct irq_data *data);
17 void unmask_msi_irq(struct irq_data *data);
18 void __read_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
19 void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
20 void __write_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
21 void read_msi_msg(unsigned int irq, struct msi_msg *msg);
22 void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg);
23 void write_msi_msg(unsigned int irq, struct msi_msg *msg);
28 __u8 multiple: 3; /* log2 num of messages allocated */
29 __u8 multi_cap : 3; /* log2 num of messages supported */
30 __u8 maskbit : 1; /* mask-pending bit supported ? */
31 __u8 is_64 : 1; /* Address size: 0=32bit 1=64bit */
32 __u8 pos; /* Location of the msi capability */
33 __u16 entry_nr; /* specific enabled entry */
34 unsigned default_irq; /* default pre-assigned irq */
37 u32 masked; /* mask bits */
39 unsigned int nvec_used; /* number of messages */
40 struct list_head list;
43 void __iomem *mask_base;
48 /* Last set MSI message */
55 * The arch hooks to setup up msi irqs. Those functions are
56 * implemented as weak symbols so that they /can/ be overriden by
57 * architecture specific code if needed.
59 int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc);
60 void arch_teardown_msi_irq(unsigned int irq);
61 int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
62 void arch_teardown_msi_irqs(struct pci_dev *dev);
63 int arch_msi_check_device(struct pci_dev* dev, int nvec, int type);
64 void arch_restore_msi_irqs(struct pci_dev *dev);
66 void default_teardown_msi_irqs(struct pci_dev *dev);
67 void default_restore_msi_irqs(struct pci_dev *dev);
68 u32 default_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag);
69 u32 default_msix_mask_irq(struct msi_desc *desc, u32 flag);
74 struct device_node *of_node;
75 struct list_head list;
77 int (*setup_irq)(struct msi_chip *chip, struct pci_dev *dev,
78 struct msi_desc *desc);
79 void (*teardown_irq)(struct msi_chip *chip, unsigned int irq);
80 int (*check_device)(struct msi_chip *chip, struct pci_dev *dev,
84 #endif /* LINUX_MSI_H */