Linux kernel mirror (for testing)
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linux
1#ifndef __MACIO_ASIC_H__
2#define __MACIO_ASIC_H__
3
4#include <asm/of_device.h>
5
6extern struct bus_type macio_bus_type;
7
8/* MacIO device driver is defined later */
9struct macio_driver;
10struct 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 */
23struct 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 */
36struct 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
49extern struct macio_dev *macio_dev_get(struct macio_dev *dev);
50extern void macio_dev_put(struct macio_dev *dev);
51
52/*
53 * Accessors to resources & interrupts and other device
54 * fields
55 */
56
57static inline int macio_resource_count(struct macio_dev *dev)
58{
59 return dev->n_resources;
60}
61
62static inline unsigned long macio_resource_start(struct macio_dev *dev, int resource_no)
63{
64 return dev->resource[resource_no].start;
65}
66
67static inline unsigned long macio_resource_end(struct macio_dev *dev, int resource_no)
68{
69 return dev->resource[resource_no].end;
70}
71
72static 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
80extern int macio_request_resource(struct macio_dev *dev, int resource_no, const char *name);
81extern void macio_release_resource(struct macio_dev *dev, int resource_no);
82extern int macio_request_resources(struct macio_dev *dev, const char *name);
83extern void macio_release_resources(struct macio_dev *dev);
84
85static inline int macio_irq_count(struct macio_dev *dev)
86{
87 return dev->n_interrupts;
88}
89
90static inline int macio_irq(struct macio_dev *dev, int irq_no)
91{
92 return dev->interrupt[irq_no].start;
93}
94
95static inline void macio_set_drvdata(struct macio_dev *dev, void *data)
96{
97 dev_set_drvdata(&dev->ofdev.dev, data);
98}
99
100static inline void* macio_get_drvdata(struct macio_dev *dev)
101{
102 return dev_get_drvdata(&dev->ofdev.dev);
103}
104
105static inline struct device_node *macio_get_of_node(struct macio_dev *mdev)
106{
107 return mdev->ofdev.node;
108}
109
110#ifdef CONFIG_PCI
111static 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 */
120struct 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, pm_message_t 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
137extern int macio_register_driver(struct macio_driver *);
138extern void macio_unregister_driver(struct macio_driver *);
139
140#endif /* __MACIO_ASIC_H__ */