uwb: handle radio controller events with out-of-range IDs correctly
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / include / linux / msi.h
blob6991ab5b24d1bbfd736df4d27315a83ee7271779
1 #ifndef LINUX_MSI_H
2 #define LINUX_MSI_H
4 #include <linux/list.h>
6 struct msi_msg {
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 */
13 struct irq_desc;
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);
21 struct msi_desc {
22 struct {
23 __u8 is_msix : 1;
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 */
30 } msi_attrib;
32 u32 masked; /* mask bits */
33 unsigned int irq;
34 struct list_head list;
36 union {
37 void __iomem *mask_base;
38 u8 mask_pos;
40 struct pci_dev *dev;
42 /* Last set MSI message */
43 struct msi_msg msg;
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 */