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1da177e4 LT |
1 | #ifndef __MACIO_ASIC_H__ |
2 | #define __MACIO_ASIC_H__ | |
3 | ||
4 | #include <asm/of_device.h> | |
5 | ||
6 | extern struct bus_type macio_bus_type; | |
7 | ||
8 | /* MacIO device driver is defined later */ | |
9 | struct macio_driver; | |
10 | struct macio_chip; | |
11 | ||
12 | #define MACIO_DEV_COUNT_RESOURCES 8 | |
13 | #define MACIO_DEV_COUNT_IRQS 8 | |
14 | ||
15 | /* | |
16 | * the macio_bus structure is used to describe a "virtual" bus | |
17 | * within a MacIO ASIC. It's typically provided by a macio_pci_asic | |
18 | * PCI device, but could be provided differently as well (nubus | |
19 | * machines using a fake OF tree). | |
20 | * | |
21 | * The pdev field can be NULL on non-PCI machines | |
22 | */ | |
23 | struct macio_bus | |
24 | { | |
25 | struct macio_chip *chip; /* macio_chip (private use) */ | |
26 | int index; /* macio chip index in system */ | |
27 | #ifdef CONFIG_PCI | |
28 | struct pci_dev *pdev; /* PCI device hosting this bus */ | |
29 | #endif | |
30 | }; | |
31 | ||
32 | /* | |
33 | * the macio_dev structure is used to describe a device | |
34 | * within an Apple MacIO ASIC. | |
35 | */ | |
36 | struct macio_dev | |
37 | { | |
38 | struct macio_bus *bus; /* macio bus this device is on */ | |
39 | struct macio_dev *media_bay; /* Device is part of a media bay */ | |
40 | struct of_device ofdev; | |
41 | int n_resources; | |
42 | struct resource resource[MACIO_DEV_COUNT_RESOURCES]; | |
43 | int n_interrupts; | |
44 | struct resource interrupt[MACIO_DEV_COUNT_IRQS]; | |
45 | }; | |
46 | #define to_macio_device(d) container_of(d, struct macio_dev, ofdev.dev) | |
47 | #define of_to_macio_device(d) container_of(d, struct macio_dev, ofdev) | |
48 | ||
49 | extern struct macio_dev *macio_dev_get(struct macio_dev *dev); | |
50 | extern void macio_dev_put(struct macio_dev *dev); | |
51 | ||
52 | /* | |
53 | * Accessors to resources & interrupts and other device | |
54 | * fields | |
55 | */ | |
56 | ||
57 | static inline int macio_resource_count(struct macio_dev *dev) | |
58 | { | |
59 | return dev->n_resources; | |
60 | } | |
61 | ||
62 | static inline unsigned long macio_resource_start(struct macio_dev *dev, int resource_no) | |
63 | { | |
64 | return dev->resource[resource_no].start; | |
65 | } | |
66 | ||
67 | static inline unsigned long macio_resource_end(struct macio_dev *dev, int resource_no) | |
68 | { | |
69 | return dev->resource[resource_no].end; | |
70 | } | |
71 | ||
72 | static inline unsigned long macio_resource_len(struct macio_dev *dev, int resource_no) | |
73 | { | |
74 | struct resource *res = &dev->resource[resource_no]; | |
75 | if (res->start == 0 || res->end == 0 || res->end < res->start) | |
76 | return 0; | |
77 | return res->end - res->start + 1; | |
78 | } | |
79 | ||
80 | extern int macio_request_resource(struct macio_dev *dev, int resource_no, const char *name); | |
81 | extern void macio_release_resource(struct macio_dev *dev, int resource_no); | |
82 | extern int macio_request_resources(struct macio_dev *dev, const char *name); | |
83 | extern void macio_release_resources(struct macio_dev *dev); | |
84 | ||
85 | static inline int macio_irq_count(struct macio_dev *dev) | |
86 | { | |
87 | return dev->n_interrupts; | |
88 | } | |
89 | ||
90 | static inline int macio_irq(struct macio_dev *dev, int irq_no) | |
91 | { | |
92 | return dev->interrupt[irq_no].start; | |
93 | } | |
94 | ||
95 | static inline void macio_set_drvdata(struct macio_dev *dev, void *data) | |
96 | { | |
97 | dev_set_drvdata(&dev->ofdev.dev, data); | |
98 | } | |
99 | ||
100 | static inline void* macio_get_drvdata(struct macio_dev *dev) | |
101 | { | |
102 | return dev_get_drvdata(&dev->ofdev.dev); | |
103 | } | |
104 | ||
105 | static inline struct device_node *macio_get_of_node(struct macio_dev *mdev) | |
106 | { | |
107 | return mdev->ofdev.node; | |
108 | } | |
109 | ||
110 | #ifdef CONFIG_PCI | |
111 | static inline struct pci_dev *macio_get_pci_dev(struct macio_dev *mdev) | |
112 | { | |
113 | return mdev->bus->pdev; | |
114 | } | |
115 | #endif | |
116 | ||
117 | /* | |
118 | * A driver for a mac-io chip based device | |
119 | */ | |
120 | struct macio_driver | |
121 | { | |
122 | char *name; | |
123 | struct of_match *match_table; | |
124 | struct module *owner; | |
125 | ||
126 | int (*probe)(struct macio_dev* dev, const struct of_match *match); | |
127 | int (*remove)(struct macio_dev* dev); | |
128 | ||
129 | int (*suspend)(struct macio_dev* dev, u32 state); | |
130 | int (*resume)(struct macio_dev* dev); | |
131 | int (*shutdown)(struct macio_dev* dev); | |
132 | ||
133 | struct device_driver driver; | |
134 | }; | |
135 | #define to_macio_driver(drv) container_of(drv,struct macio_driver, driver) | |
136 | ||
137 | extern int macio_register_driver(struct macio_driver *); | |
138 | extern void macio_unregister_driver(struct macio_driver *); | |
139 | ||
140 | #endif /* __MACIO_ASIC_H__ */ |