1 #ifndef __MACIO_ASIC_H__
2 #define __MACIO_ASIC_H__
3 #ifdef __KERNEL__
4
5 #include <linux/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 platform_device ofdev;
42 struct device_dma_parameters dma_parms; /* ide needs that */
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
macio_resource_count(struct macio_dev * dev)59 static inline int macio_resource_count(struct macio_dev *dev)
60 {
61 return dev->n_resources;
62 }
63
macio_resource_start(struct macio_dev * dev,int resource_no)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
macio_resource_end(struct macio_dev * dev,int resource_no)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
macio_resource_len(struct macio_dev * dev,int resource_no)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;
79 return res->end - res->start + 1;
80 }
81
82 extern int macio_enable_devres(struct macio_dev *dev);
83
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
macio_irq_count(struct macio_dev * dev)89 static inline int macio_irq_count(struct macio_dev *dev)
90 {
91 return dev->n_interrupts;
92 }
93
macio_irq(struct macio_dev * dev,int irq_no)94 static inline int macio_irq(struct macio_dev *dev, int irq_no)
95 {
96 return dev->interrupt[irq_no].start;
97 }
98
macio_set_drvdata(struct macio_dev * dev,void * data)99 static inline void macio_set_drvdata(struct macio_dev *dev, void *data)
100 {
101 dev_set_drvdata(&dev->ofdev.dev, data);
102 }
103
macio_get_drvdata(struct macio_dev * dev)104 static inline void* macio_get_drvdata(struct macio_dev *dev)
105 {
106 return dev_get_drvdata(&dev->ofdev.dev);
107 }
108
macio_get_of_node(struct macio_dev * mdev)109 static inline struct device_node *macio_get_of_node(struct macio_dev *mdev)
110 {
111 return mdev->ofdev.dev.of_node;
112 }
113
114 #ifdef CONFIG_PCI
macio_get_pci_dev(struct macio_dev * mdev)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 {
126 int (*probe)(struct macio_dev* dev, const struct of_device_id *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 #ifdef CONFIG_PMAC_MEDIABAY
134 void (*mediabay_event)(struct macio_dev* dev, int mb_state);
135 #endif
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
143 #endif /* __KERNEL__ */
144 #endif /* __MACIO_ASIC_H__ */
145