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
;
35 /* Last set MSI message */
40 * The arch hook for setup up msi irqs
42 int arch_setup_msi_irq(struct pci_dev
*dev
, struct msi_desc
*desc
);
43 void arch_teardown_msi_irq(unsigned int irq
);
46 #endif /* LINUX_MSI_H */