4 #include <linux/kobject.h>
5 #include <linux/list.h>
10 u32 address_lo; /* low 32 bits of msi message address */
11 u32 address_hi; /* high 32 bits of msi message address */
12 u32 data; /* 16 bits of msi message data */
15 /* Helper functions */
18 extern void mask_msi_irq(struct irq_data *data);
19 extern void unmask_msi_irq(struct irq_data *data);
20 extern void __read_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
21 extern void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
22 extern void __write_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
23 extern void read_msi_msg(unsigned int irq, struct msi_msg *msg);
24 extern void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg);
25 extern void write_msi_msg(unsigned int irq, struct msi_msg *msg);
30 __u8 multiple: 3; /* log2 number of messages */
31 __u8 maskbit : 1; /* mask-pending bit supported ? */
32 __u8 is_64 : 1; /* Address size: 0=32bit 1=64bit */
33 __u8 pos; /* Location of the msi capability */
34 __u16 entry_nr; /* specific enabled entry */
35 unsigned default_irq; /* default pre-assigned irq */
38 u32 masked; /* mask bits */
40 struct list_head list;
43 void __iomem *mask_base;
48 /* Last set MSI message */
54 #else /* CONFIG_XEN */
57 #endif /* CONFIG_XEN */
60 * The arch hook for setup up msi irqs
62 int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc);
63 void arch_teardown_msi_irq(unsigned int irq);
64 extern int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
65 extern void arch_teardown_msi_irqs(struct pci_dev *dev);
66 extern int arch_msi_check_device(struct pci_dev* dev, int nvec, int type);
69 #endif /* LINUX_MSI_H */