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1da177e4 LT |
1 | #ifndef __MACIO_ASIC_H__ |
2 | #define __MACIO_ASIC_H__ | |
88ced031 | 3 | #ifdef __KERNEL__ |
1da177e4 | 4 | |
4b1d99b3 | 5 | #include <linux/of_device.h> |
1da177e4 LT |
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 */ | |
94a0cb1f | 41 | struct platform_device ofdev; |
128b4a0e | 42 | struct device_dma_parameters dma_parms; /* ide needs that */ |
1da177e4 LT |
43 | int n_resources; |
44 | struct resource resource[MACIO_DEV_COUNT_RESOURCES]; | |
45 | int n_interrupts; | |
46 | struct resource interrupt[MACIO_DEV_COUNT_IRQS]; | |
47 | }; | |
48 | #define to_macio_device(d) container_of(d, struct macio_dev, ofdev.dev) | |
49 | #define of_to_macio_device(d) container_of(d, struct macio_dev, ofdev) | |
50 | ||
51 | extern struct macio_dev *macio_dev_get(struct macio_dev *dev); | |
52 | extern void macio_dev_put(struct macio_dev *dev); | |
53 | ||
54 | /* | |
55 | * Accessors to resources & interrupts and other device | |
56 | * fields | |
57 | */ | |
58 | ||
59 | static inline int macio_resource_count(struct macio_dev *dev) | |
60 | { | |
61 | return dev->n_resources; | |
62 | } | |
63 | ||
64 | static inline unsigned long macio_resource_start(struct macio_dev *dev, int resource_no) | |
65 | { | |
66 | return dev->resource[resource_no].start; | |
67 | } | |
68 | ||
69 | static inline unsigned long macio_resource_end(struct macio_dev *dev, int resource_no) | |
70 | { | |
71 | return dev->resource[resource_no].end; | |
72 | } | |
73 | ||
74 | static inline unsigned long macio_resource_len(struct macio_dev *dev, int resource_no) | |
75 | { | |
76 | struct resource *res = &dev->resource[resource_no]; | |
77 | if (res->start == 0 || res->end == 0 || res->end < res->start) | |
78 | return 0; | |
28f65c11 | 79 | return resource_size(res); |
1da177e4 LT |
80 | } |
81 | ||
7fb19ea0 BH |
82 | extern int macio_enable_devres(struct macio_dev *dev); |
83 | ||
1da177e4 LT |
84 | extern int macio_request_resource(struct macio_dev *dev, int resource_no, const char *name); |
85 | extern void macio_release_resource(struct macio_dev *dev, int resource_no); | |
86 | extern int macio_request_resources(struct macio_dev *dev, const char *name); | |
87 | extern void macio_release_resources(struct macio_dev *dev); | |
88 | ||
89 | static inline int macio_irq_count(struct macio_dev *dev) | |
90 | { | |
91 | return dev->n_interrupts; | |
92 | } | |
93 | ||
94 | static inline int macio_irq(struct macio_dev *dev, int irq_no) | |
95 | { | |
96 | return dev->interrupt[irq_no].start; | |
97 | } | |
98 | ||
99 | static inline void macio_set_drvdata(struct macio_dev *dev, void *data) | |
100 | { | |
101 | dev_set_drvdata(&dev->ofdev.dev, data); | |
102 | } | |
103 | ||
104 | static inline void* macio_get_drvdata(struct macio_dev *dev) | |
105 | { | |
106 | return dev_get_drvdata(&dev->ofdev.dev); | |
107 | } | |
108 | ||
109 | static inline struct device_node *macio_get_of_node(struct macio_dev *mdev) | |
110 | { | |
61c7a080 | 111 | return mdev->ofdev.dev.of_node; |
1da177e4 LT |
112 | } |
113 | ||
114 | #ifdef CONFIG_PCI | |
115 | static inline struct pci_dev *macio_get_pci_dev(struct macio_dev *mdev) | |
116 | { | |
117 | return mdev->bus->pdev; | |
118 | } | |
119 | #endif | |
120 | ||
121 | /* | |
122 | * A driver for a mac-io chip based device | |
123 | */ | |
124 | struct macio_driver | |
125 | { | |
5e655772 | 126 | int (*probe)(struct macio_dev* dev, const struct of_device_id *match); |
1da177e4 LT |
127 | int (*remove)(struct macio_dev* dev); |
128 | ||
b1c42851 | 129 | int (*suspend)(struct macio_dev* dev, pm_message_t state); |
1da177e4 LT |
130 | int (*resume)(struct macio_dev* dev); |
131 | int (*shutdown)(struct macio_dev* dev); | |
132 | ||
d58b0c39 BH |
133 | #ifdef CONFIG_PMAC_MEDIABAY |
134 | void (*mediabay_event)(struct macio_dev* dev, int mb_state); | |
135 | #endif | |
1da177e4 LT |
136 | struct device_driver driver; |
137 | }; | |
138 | #define to_macio_driver(drv) container_of(drv,struct macio_driver, driver) | |
139 | ||
140 | extern int macio_register_driver(struct macio_driver *); | |
141 | extern void macio_unregister_driver(struct macio_driver *); | |
142 | ||
88ced031 | 143 | #endif /* __KERNEL__ */ |
1da177e4 | 144 | #endif /* __MACIO_ASIC_H__ */ |