5 u32 address_lo; /* low 32 bits of msi message address */
6 u32 address_hi; /* high 32 bits of msi message address */
7 u32 data; /* 16 bits of msi message data */
10 /* Helper functions */
11 extern void mask_msi_irq(unsigned int irq);
12 extern void unmask_msi_irq(unsigned int irq);
13 extern void read_msi_msg(unsigned int irq, struct msi_msg *msg);
14 extern void write_msi_msg(unsigned int irq, struct msi_msg *msg);
18 __u8 type : 5; /* {0: unused, 5h:MSI, 11h:MSI-X} */
19 __u8 maskbit : 1; /* mask-pending bit supported ? */
21 __u8 is_64 : 1; /* Address size: 0=32bit 1=64bit */
22 __u8 pos; /* Location of the msi capability */
23 __u16 entry_nr; /* specific enabled entry */
24 unsigned default_irq; /* default pre-assigned irq */
32 void __iomem *mask_base;
36 /* PM save area for MSIX address/data */
37 struct msi_msg msg_save;
42 * The arch hook for setup up msi irqs
44 int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc);
45 void arch_teardown_msi_irq(unsigned int irq);
48 #endif /* LINUX_MSI_H */