4 #include <linux/list.h>
7 u32 address_lo
; /* low 32 bits of msi message address */
8 u32 address_hi
; /* high 32 bits of msi message address */
9 u32 data
; /* 16 bits of msi message data */
12 /* Helper functions */
14 extern void mask_msi_irq(unsigned int irq
);
15 extern void unmask_msi_irq(unsigned int irq
);
16 extern void read_msi_msg_desc(struct irq_desc
*desc
, struct msi_msg
*msg
);
17 extern void write_msi_msg_desc(struct irq_desc
*desc
, struct msi_msg
*msg
);
18 extern void read_msi_msg(unsigned int irq
, struct msi_msg
*msg
);
19 extern void write_msi_msg(unsigned int irq
, struct msi_msg
*msg
);
24 __u8 multiple
: 3; /* log2 number of messages */
25 __u8 maskbit
: 1; /* mask-pending bit supported ? */
26 __u8 is_64
: 1; /* Address size: 0=32bit 1=64bit */
27 __u8 pos
; /* Location of the msi capability */
28 __u16 entry_nr
; /* specific enabled entry */
29 unsigned default_irq
; /* default pre-assigned irq */
32 u32 masked
; /* mask bits */
34 struct list_head list
;
37 void __iomem
*mask_base
;
42 /* Last set MSI message */
47 * The arch hook for setup up msi irqs
49 int arch_setup_msi_irq(struct pci_dev
*dev
, struct msi_desc
*desc
);
50 void arch_teardown_msi_irq(unsigned int irq
);
51 extern int arch_setup_msi_irqs(struct pci_dev
*dev
, int nvec
, int type
);
52 extern void arch_teardown_msi_irqs(struct pci_dev
*dev
);
53 extern int arch_msi_check_device(struct pci_dev
* dev
, int nvec
, int type
);
56 #endif /* LINUX_MSI_H */
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