projects / linux.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 */ |
| 3145e941 | 13 | struct irq_desc; |
| 3b7d1921 EB |
14 | extern void mask_msi_irq(unsigned int irq); |
| 15 | extern void unmask_msi_irq(unsigned int irq); | |
| 3145e941 YL |
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); | |
| 3b7d1921 | 18 | extern void read_msi_msg(unsigned int irq, struct msi_msg *msg); |
| 3b7d1921 EB |
19 | extern void write_msi_msg(unsigned int irq, struct msi_msg *msg); |
| 20 | ||
| 21 | struct msi_desc { | |
| 22 | struct { | |
| 24d27553 | 23 | __u8 is_msix : 1; |
| 1c8d7b0a | 24 | __u8 multiple: 3; /* log2 number of messages */ |
| 3b7d1921 | 25 | __u8 maskbit : 1; /* mask-pending bit supported ? */ |
| 3b7d1921 EB |
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 */ | |
| f2440d9a | 30 | } msi_attrib; |
| 3b7d1921 | 31 | |
| f2440d9a | 32 | u32 masked; /* mask bits */ |
| 4aa9bc95 ME |
33 | unsigned int irq; |
| 34 | struct list_head list; | |
| 3b7d1921 | 35 | |
| 264d9caa MW |
36 | union { |
| 37 | void __iomem *mask_base; | |
| 38 | u8 mask_pos; | |
| 39 | }; | |
| 3b7d1921 EB |
40 | struct pci_dev *dev; |
| 41 | ||
| 392ee1e6 EB |
42 | /* Last set MSI message */ |
| 43 | struct msi_msg msg; | |
| 3b7d1921 EB |
44 | }; |
| 45 | ||
| 46 | /* | |
| 47 | * The arch hook for setup up msi irqs | |
| 48 | */ | |
| f7feaca7 | 49 | int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc); |
| 3b7d1921 | 50 | void arch_teardown_msi_irq(unsigned int irq); |
| 9c831334 | 51 | extern int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); |
| 032de8e2 | 52 | extern void arch_teardown_msi_irqs(struct pci_dev *dev); |
| c9953a73 | 53 | extern int arch_msi_check_device(struct pci_dev* dev, int nvec, int type); |
| 3b7d1921 EB |
54 | |
| 55 | ||
| 56 | #endif /* LINUX_MSI_H */ |