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 */ |
| 1c9db525 | 13 | struct irq_data; |
| 39431acb | 14 | struct msi_desc; |
| 1c9db525 TG |
15 | extern void mask_msi_irq(struct irq_data *data); |
| 16 | extern void unmask_msi_irq(struct irq_data *data); | |
| 39431acb TG |
17 | extern void __read_msi_msg(struct msi_desc *entry, struct msi_msg *msg); |
| 18 | extern void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg); | |
| 19 | extern void __write_msi_msg(struct msi_desc *entry, struct msi_msg *msg); | |
| 3b7d1921 | 20 | extern void read_msi_msg(unsigned int irq, struct msi_msg *msg); |
| 30da5524 | 21 | extern void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg); |
| 3b7d1921 EB |
22 | extern void write_msi_msg(unsigned int irq, struct msi_msg *msg); |
| 23 | ||
| 24 | struct msi_desc { | |
| 25 | struct { | |
| 24d27553 | 26 | __u8 is_msix : 1; |
| 1c8d7b0a | 27 | __u8 multiple: 3; /* log2 number of messages */ |
| 3b7d1921 | 28 | __u8 maskbit : 1; /* mask-pending bit supported ? */ |
| 3b7d1921 EB |
29 | __u8 is_64 : 1; /* Address size: 0=32bit 1=64bit */ |
| 30 | __u8 pos; /* Location of the msi capability */ | |
| 31 | __u16 entry_nr; /* specific enabled entry */ | |
| 32 | unsigned default_irq; /* default pre-assigned irq */ | |
| f2440d9a | 33 | } msi_attrib; |
| 3b7d1921 | 34 | |
| f2440d9a | 35 | u32 masked; /* mask bits */ |
| 4aa9bc95 ME |
36 | unsigned int irq; |
| 37 | struct list_head list; | |
| 3b7d1921 | 38 | |
| 264d9caa MW |
39 | union { |
| 40 | void __iomem *mask_base; | |
| 41 | u8 mask_pos; | |
| 42 | }; | |
| 3b7d1921 EB |
43 | struct pci_dev *dev; |
| 44 | ||
| 392ee1e6 EB |
45 | /* Last set MSI message */ |
| 46 | struct msi_msg msg; | |
| 3b7d1921 EB |
47 | }; |
| 48 | ||
| 49 | /* | |
| 50 | * The arch hook for setup up msi irqs | |
| 51 | */ | |
| f7feaca7 | 52 | int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc); |
| 3b7d1921 | 53 | void arch_teardown_msi_irq(unsigned int irq); |
| 9c831334 | 54 | extern int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); |
| 032de8e2 | 55 | extern void arch_teardown_msi_irqs(struct pci_dev *dev); |
| c9953a73 | 56 | extern int arch_msi_check_device(struct pci_dev* dev, int nvec, int type); |
| 3b7d1921 EB |
57 | |
| 58 | ||
| 59 | #endif /* LINUX_MSI_H */ |