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; |
| 2366d06e BH |
16 | void mask_msi_irq(struct irq_data *data); |
| 17 | void unmask_msi_irq(struct irq_data *data); | |
| 18 | void __read_msi_msg(struct msi_desc *entry, struct msi_msg *msg); | |
| 19 | void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg); | |
| 20 | void __write_msi_msg(struct msi_desc *entry, struct msi_msg *msg); | |
| 21 | void read_msi_msg(unsigned int irq, struct msi_msg *msg); | |
| 22 | void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg); | |
| 23 | void write_msi_msg(unsigned int irq, struct msi_msg *msg); | |
| 3b7d1921 EB |
24 | |
| 25 | struct msi_desc { | |
| 26 | struct { | |
| 24d27553 | 27 | __u8 is_msix : 1; |
| 31ea5d4d YW |
28 | __u8 multiple: 3; /* log2 num of messages allocated */ |
| 29 | __u8 multi_cap : 3; /* log2 num of messages supported */ | |
| f7625980 BH |
30 | __u8 maskbit : 1; /* mask-pending bit supported ? */ |
| 31 | __u8 is_64 : 1; /* Address size: 0=32bit 1=64bit */ | |
| 32 | __u8 pos; /* Location of the msi capability */ | |
| 33 | __u16 entry_nr; /* specific enabled entry */ | |
| 34 | unsigned default_irq; /* default pre-assigned irq */ | |
| f2440d9a | 35 | } msi_attrib; |
| 3b7d1921 | 36 | |
| f2440d9a | 37 | u32 masked; /* mask bits */ |
| 4aa9bc95 | 38 | unsigned int irq; |
| 65f6ae66 | 39 | unsigned int nvec_used; /* number of messages */ |
| 4aa9bc95 | 40 | struct list_head list; |
| 3b7d1921 | 41 | |
| 264d9caa MW |
42 | union { |
| 43 | void __iomem *mask_base; | |
| 44 | u8 mask_pos; | |
| 45 | }; | |
| 3b7d1921 EB |
46 | struct pci_dev *dev; |
| 47 | ||
| 392ee1e6 EB |
48 | /* Last set MSI message */ |
| 49 | struct msi_msg msg; | |
| b50cac55 NH |
50 | |
| 51 | struct kobject kobj; | |
| 3b7d1921 EB |
52 | }; |
| 53 | ||
| 54 | /* | |
| 4287d824 TP |
55 | * The arch hooks to setup up msi irqs. Those functions are |
| 56 | * implemented as weak symbols so that they /can/ be overriden by | |
| 57 | * architecture specific code if needed. | |
| 3b7d1921 | 58 | */ |
| f7feaca7 | 59 | int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc); |
| 3b7d1921 | 60 | void arch_teardown_msi_irq(unsigned int irq); |
| 2366d06e BH |
61 | int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); |
| 62 | void arch_teardown_msi_irqs(struct pci_dev *dev); | |
| 63 | int arch_msi_check_device(struct pci_dev* dev, int nvec, int type); | |
| ac8344c4 | 64 | void arch_restore_msi_irqs(struct pci_dev *dev); |
| 4287d824 TP |
65 | |
| 66 | void default_teardown_msi_irqs(struct pci_dev *dev); | |
| ac8344c4 | 67 | void default_restore_msi_irqs(struct pci_dev *dev); |
| 0e4ccb15 KRW |
68 | u32 default_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag); |
| 69 | u32 default_msix_mask_irq(struct msi_desc *desc, u32 flag); | |
| 3b7d1921 | 70 | |
| 0cbdcfcf TR |
71 | struct msi_chip { |
| 72 | struct module *owner; | |
| 73 | struct device *dev; | |
| 0d5a6db3 TP |
74 | struct device_node *of_node; |
| 75 | struct list_head list; | |
| 0cbdcfcf TR |
76 | |
| 77 | int (*setup_irq)(struct msi_chip *chip, struct pci_dev *dev, | |
| 78 | struct msi_desc *desc); | |
| 79 | void (*teardown_irq)(struct msi_chip *chip, unsigned int irq); | |
| 80 | int (*check_device)(struct msi_chip *chip, struct pci_dev *dev, | |
| 81 | int nvec, int type); | |
| 82 | }; | |
| 83 | ||
| 3b7d1921 | 84 | #endif /* LINUX_MSI_H */ |