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1da177e4 LT |
1 | #ifndef __MACIO_ASIC_H__ |
2 | #define __MACIO_ASIC_H__ | |
88ced031 | 3 | #ifdef __KERNEL__ |
1da177e4 LT |
4 | |
5 | #include <asm/of_device.h> | |
6 | ||
7 | extern struct bus_type macio_bus_type; | |
8 | ||
9 | /* MacIO device driver is defined later */ | |
10 | struct macio_driver; | |
11 | struct macio_chip; | |
12 | ||
13 | #define MACIO_DEV_COUNT_RESOURCES 8 | |
14 | #define MACIO_DEV_COUNT_IRQS 8 | |
15 | ||
16 | /* | |
17 | * the macio_bus structure is used to describe a "virtual" bus | |
18 | * within a MacIO ASIC. It's typically provided by a macio_pci_asic | |
19 | * PCI device, but could be provided differently as well (nubus | |
20 | * machines using a fake OF tree). | |
21 | * | |
22 | * The pdev field can be NULL on non-PCI machines | |
23 | */ | |
24 | struct macio_bus | |
25 | { | |
26 | struct macio_chip *chip; /* macio_chip (private use) */ | |
27 | int index; /* macio chip index in system */ | |
28 | #ifdef CONFIG_PCI | |
29 | struct pci_dev *pdev; /* PCI device hosting this bus */ | |
30 | #endif | |
31 | }; | |
32 | ||
33 | /* | |
34 | * the macio_dev structure is used to describe a device | |
35 | * within an Apple MacIO ASIC. | |
36 | */ | |
37 | struct macio_dev | |
38 | { | |
39 | struct macio_bus *bus; /* macio bus this device is on */ | |
40 | struct macio_dev *media_bay; /* Device is part of a media bay */ | |
41 | struct of_device ofdev; | |
42 | int n_resources; | |
43 | struct resource resource[MACIO_DEV_COUNT_RESOURCES]; | |
44 | int n_interrupts; | |
45 | struct resource interrupt[MACIO_DEV_COUNT_IRQS]; | |
46 | }; | |
47 | #define to_macio_device(d) container_of(d, struct macio_dev, ofdev.dev) | |
48 | #define of_to_macio_device(d) container_of(d, struct macio_dev, ofdev) | |
49 | ||
50 | extern struct macio_dev *macio_dev_get(struct macio_dev *dev); | |
51 | extern void macio_dev_put(struct macio_dev *dev); | |
52 | ||
53 | /* | |
54 | * Accessors to resources & interrupts and other device | |
55 | * fields | |
56 | */ | |
57 | ||
58 | static inline int macio_resource_count(struct macio_dev *dev) | |
59 | { | |
60 | return dev->n_resources; | |
61 | } | |
62 | ||
63 | static inline unsigned long macio_resource_start(struct macio_dev *dev, int resource_no) | |
64 | { | |
65 | return dev->resource[resource_no].start; | |
66 | } | |
67 | ||
68 | static inline unsigned long macio_resource_end(struct macio_dev *dev, int resource_no) | |
69 | { | |
70 | return dev->resource[resource_no].end; | |
71 | } | |
72 | ||
73 | static inline unsigned long macio_resource_len(struct macio_dev *dev, int resource_no) | |
74 | { | |
75 | struct resource *res = &dev->resource[resource_no]; | |
76 | if (res->start == 0 || res->end == 0 || res->end < res->start) | |
77 | return 0; | |
78 | return res->end - res->start + 1; | |
79 | } | |
80 | ||
81 | extern int macio_request_resource(struct macio_dev *dev, int resource_no, const char *name); | |
82 | extern void macio_release_resource(struct macio_dev *dev, int resource_no); | |
83 | extern int macio_request_resources(struct macio_dev *dev, const char *name); | |
84 | extern void macio_release_resources(struct macio_dev *dev); | |
85 | ||
86 | static inline int macio_irq_count(struct macio_dev *dev) | |
87 | { | |
88 | return dev->n_interrupts; | |
89 | } | |
90 | ||
91 | static inline int macio_irq(struct macio_dev *dev, int irq_no) | |
92 | { | |
93 | return dev->interrupt[irq_no].start; | |
94 | } | |
95 | ||
96 | static inline void macio_set_drvdata(struct macio_dev *dev, void *data) | |
97 | { | |
98 | dev_set_drvdata(&dev->ofdev.dev, data); | |
99 | } | |
100 | ||
101 | static inline void* macio_get_drvdata(struct macio_dev *dev) | |
102 | { | |
103 | return dev_get_drvdata(&dev->ofdev.dev); | |
104 | } | |
105 | ||
106 | static inline struct device_node *macio_get_of_node(struct macio_dev *mdev) | |
107 | { | |
108 | return mdev->ofdev.node; | |
109 | } | |
110 | ||
111 | #ifdef CONFIG_PCI | |
112 | static inline struct pci_dev *macio_get_pci_dev(struct macio_dev *mdev) | |
113 | { | |
114 | return mdev->bus->pdev; | |
115 | } | |
116 | #endif | |
117 | ||
118 | /* | |
119 | * A driver for a mac-io chip based device | |
120 | */ | |
121 | struct macio_driver | |
122 | { | |
123 | char *name; | |
5e655772 | 124 | struct of_device_id *match_table; |
1da177e4 LT |
125 | struct module *owner; |
126 | ||
5e655772 | 127 | int (*probe)(struct macio_dev* dev, const struct of_device_id *match); |
1da177e4 LT |
128 | int (*remove)(struct macio_dev* dev); |
129 | ||
b1c42851 | 130 | int (*suspend)(struct macio_dev* dev, pm_message_t state); |
1da177e4 LT |
131 | int (*resume)(struct macio_dev* dev); |
132 | int (*shutdown)(struct macio_dev* dev); | |
133 | ||
134 | struct device_driver driver; | |
135 | }; | |
136 | #define to_macio_driver(drv) container_of(drv,struct macio_driver, driver) | |
137 | ||
138 | extern int macio_register_driver(struct macio_driver *); | |
139 | extern void macio_unregister_driver(struct macio_driver *); | |
140 | ||
88ced031 | 141 | #endif /* __KERNEL__ */ |
1da177e4 | 142 | #endif /* __MACIO_ASIC_H__ */ |