blob: c7ef94343673f00fabb41c093e5d7404cb71197a (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
#ifndef LINUX_MSI_H
#define LINUX_MSI_H
struct msi_msg {
u32 address_lo; /* low 32 bits of msi message address */
u32 address_hi; /* high 32 bits of msi message address */
u32 data; /* 16 bits of msi message data */
};
/* Heper functions */
extern void mask_msi_irq(unsigned int irq);
extern void unmask_msi_irq(unsigned int irq);
extern void read_msi_msg(unsigned int irq, struct msi_msg *msg);
extern void write_msi_msg(unsigned int irq, struct msi_msg *msg);
struct msi_desc {
struct {
__u8 type : 5; /* {0: unused, 5h:MSI, 11h:MSI-X} */
__u8 maskbit : 1; /* mask-pending bit supported ? */
__u8 unused : 1;
__u8 is_64 : 1; /* Address size: 0=32bit 1=64bit */
__u8 pos; /* Location of the msi capability */
__u16 entry_nr; /* specific enabled entry */
unsigned default_irq; /* default pre-assigned irq */
}msi_attrib;
struct {
__u16 head;
__u16 tail;
}link;
void __iomem *mask_base;
struct pci_dev *dev;
#ifdef CONFIG_PM
/* PM save area for MSIX address/data */
struct msi_msg msg_save;
#endif
};
/*
* The arch hook for setup up msi irqs
*/
int arch_setup_msi_irq(unsigned int irq, struct pci_dev *dev);
void arch_teardown_msi_irq(unsigned int irq);
#endif /* LINUX_MSI_H */
|
