projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3b7d1921 EB |
1 | #ifndef LINUX_MSI_H |
| 2 | #define LINUX_MSI_H | |
| 3 | ||
| b50cac55 | 4 | #include <linux/kobject.h> |
| 4aa9bc95 ME |
5 | #include <linux/list.h> |
| 6 | ||
| 3b7d1921 EB |
7 | struct msi_msg { |
| 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 */ | |
| 11 | }; | |
| 12 | ||
| c54c1879 | 13 | /* Helper functions */ |
| 1c9db525 | 14 | struct irq_data; |
| 39431acb | 15 | struct msi_desc; |
| 1c9db525 TG |
16 | extern void mask_msi_irq(struct irq_data *data); |
| 17 | extern void unmask_msi_irq(struct irq_data *data); | |
| 39431acb TG |
18 | extern void __read_msi_msg(struct msi_desc *entry, struct msi_msg *msg); |
| 19 | extern void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg); | |
| 20 | extern void __write_msi_msg(struct msi_desc *entry, struct msi_msg *msg); | |
| 3b7d1921 | 21 | extern void read_msi_msg(unsigned int irq, struct msi_msg *msg); |
| 30da5524 | 22 | extern void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg); |
| 3b7d1921 EB |
23 | extern void write_msi_msg(unsigned int irq, struct msi_msg *msg); |
| 24 | ||
| 25 | struct msi_desc { | |
| 26 | struct { | |
| 24d27553 | 27 | __u8 is_msix : 1; |
| 1c8d7b0a | 28 | __u8 multiple: 3; /* log2 number of messages */ |
| 3b7d1921 | 29 | __u8 maskbit : 1; /* mask-pending bit supported ? */ |
| 3b7d1921 EB |
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 */ | |
| f2440d9a | 34 | } msi_attrib; |
| 3b7d1921 | 35 | |
| f2440d9a | 36 | u32 masked; /* mask bits */ |
| 4aa9bc95 ME |
37 | unsigned int irq; |
| 38 | struct list_head list; | |
| 3b7d1921 | 39 | |
| 264d9caa MW |
40 | union { |
| 41 | void __iomem *mask_base; | |
| 42 | u8 mask_pos; | |
| 43 | }; | |
| 3b7d1921 EB |
44 | struct pci_dev *dev; |
| 45 | ||
| 392ee1e6 EB |
46 | /* Last set MSI message */ |
| 47 | struct msi_msg msg; | |
| b50cac55 NH |
48 | |
| 49 | struct kobject kobj; | |
| 3b7d1921 EB |
50 | }; |
| 51 | ||
| 52 | /* | |
| 53 | * The arch hook for setup up msi irqs | |
| 54 | */ | |
| f7feaca7 | 55 | int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc); |
| 3b7d1921 | 56 | void arch_teardown_msi_irq(unsigned int irq); |
| 9c831334 | 57 | extern int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); |
| 032de8e2 | 58 | extern void arch_teardown_msi_irqs(struct pci_dev *dev); |
| c9953a73 | 59 | extern int arch_msi_check_device(struct pci_dev* dev, int nvec, int type); |
| 3b7d1921 EB |
60 | |
| 61 | ||
| 62 | #endif /* LINUX_MSI_H */ |