projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 3b7d1921 EB |
1 | #ifndef LINUX_MSI_H |
| 2 | #define LINUX_MSI_H | |
| 3 | ||
| 4aa9bc95 ME |
4 | #include <linux/list.h> |
| 5 | ||
| 3b7d1921 EB |
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 */ | |
| 10 | }; | |
| 11 | ||
| c54c1879 | 12 | /* Helper functions */ |
| 3b7d1921 EB |
13 | extern void mask_msi_irq(unsigned int irq); |
| 14 | extern void unmask_msi_irq(unsigned int irq); | |
| 15 | extern void read_msi_msg(unsigned int irq, struct msi_msg *msg); | |
| 3b7d1921 EB |
16 | extern void write_msi_msg(unsigned int irq, struct msi_msg *msg); |
| 17 | ||
| 18 | struct msi_desc { | |
| 19 | struct { | |
| 20 | __u8 type : 5; /* {0: unused, 5h:MSI, 11h:MSI-X} */ | |
| 21 | __u8 maskbit : 1; /* mask-pending bit supported ? */ | |
| 392ee1e6 | 22 | __u8 masked : 1; |
| 3b7d1921 EB |
23 | __u8 is_64 : 1; /* Address size: 0=32bit 1=64bit */ |
| 24 | __u8 pos; /* Location of the msi capability */ | |
| 8e149e09 | 25 | __u32 maskbits_mask; /* mask bits mask */ |
| 3b7d1921 EB |
26 | __u16 entry_nr; /* specific enabled entry */ |
| 27 | unsigned default_irq; /* default pre-assigned irq */ | |
| 28 | }msi_attrib; | |
| 29 | ||
| 4aa9bc95 ME |
30 | unsigned int irq; |
| 31 | struct list_head list; | |
| 3b7d1921 EB |
32 | |
| 33 | void __iomem *mask_base; | |
| 34 | struct pci_dev *dev; | |
| 35 | ||
| 392ee1e6 EB |
36 | /* Last set MSI message */ |
| 37 | struct msi_msg msg; | |
| 3b7d1921 EB |
38 | }; |
| 39 | ||
| 40 | /* | |
| 41 | * The arch hook for setup up msi irqs | |
| 42 | */ | |
| f7feaca7 | 43 | int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc); |
| 3b7d1921 | 44 | void arch_teardown_msi_irq(unsigned int irq); |
| 9c831334 | 45 | extern int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); |
| 032de8e2 | 46 | extern void arch_teardown_msi_irqs(struct pci_dev *dev); |
| c9953a73 | 47 | extern int arch_msi_check_device(struct pci_dev* dev, int nvec, int type); |
| 3b7d1921 EB |
48 | |
| 49 | ||
| 50 | #endif /* LINUX_MSI_H */ |