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 number of messages */
29 __u8 maskbit
: 1; /* mask-pending bit supported ? */
30 __u8 is_64
: 1; /* Address size: 0=32bit 1=64bit */
31 __u8 pos
; /* Location of the msi capability */
32 __u16 entry_nr
; /* specific enabled entry */
33 unsigned default_irq
; /* default pre-assigned irq */
36 u32 masked
; /* mask bits */
38 unsigned int nvec_used
; /* number of messages */
39 struct list_head list
;
42 void __iomem
*mask_base
;
47 /* Last set MSI message */
54 * The arch hooks to setup up msi irqs. Those functions are
55 * implemented as weak symbols so that they /can/ be overriden by
56 * architecture specific code if needed.
58 int arch_setup_msi_irq(struct pci_dev
*dev
, struct msi_desc
*desc
);
59 void arch_teardown_msi_irq(unsigned int irq
);
60 int arch_setup_msi_irqs(struct pci_dev
*dev
, int nvec
, int type
);
61 void arch_teardown_msi_irqs(struct pci_dev
*dev
);
62 int arch_msi_check_device(struct pci_dev
* dev
, int nvec
, int type
);
63 void arch_restore_msi_irqs(struct pci_dev
*dev
, int irq
);
65 void default_teardown_msi_irqs(struct pci_dev
*dev
);
66 void default_restore_msi_irqs(struct pci_dev
*dev
, int irq
);
67 u32
default_msi_mask_irq(struct msi_desc
*desc
, u32 mask
, u32 flag
);
68 u32
default_msix_mask_irq(struct msi_desc
*desc
, u32 flag
);
73 struct device_node
*of_node
;
74 struct list_head list
;
76 int (*setup_irq
)(struct msi_chip
*chip
, struct pci_dev
*dev
,
77 struct msi_desc
*desc
);
78 void (*teardown_irq
)(struct msi_chip
*chip
, unsigned int irq
);
79 int (*check_device
)(struct msi_chip
*chip
, struct pci_dev
*dev
,
83 #endif /* LINUX_MSI_H */
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