1 #ifndef __MACIO_ASIC_H__
2 #define __MACIO_ASIC_H__
4 #include <asm/of_device.h>
6 extern struct bus_type macio_bus_type;
8 /* MacIO device driver is defined later */
12 #define MACIO_DEV_COUNT_RESOURCES 8
13 #define MACIO_DEV_COUNT_IRQS 8
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).
21 * The pdev field can be NULL on non-PCI machines
25 struct macio_chip *chip; /* macio_chip (private use) */
26 int index; /* macio chip index in system */
28 struct pci_dev *pdev; /* PCI device hosting this bus */
33 * the macio_dev structure is used to describe a device
34 * within an Apple MacIO ASIC.
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;
42 struct resource resource[MACIO_DEV_COUNT_RESOURCES];
44 struct resource interrupt[MACIO_DEV_COUNT_IRQS];
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)
49 extern struct macio_dev *macio_dev_get(struct macio_dev *dev);
50 extern void macio_dev_put(struct macio_dev *dev);
53 * Accessors to resources & interrupts and other device
57 static inline int macio_resource_count(struct macio_dev *dev)
59 return dev->n_resources;
62 static inline unsigned long macio_resource_start(struct macio_dev *dev, int resource_no)
64 return dev->resource[resource_no].start;
67 static inline unsigned long macio_resource_end(struct macio_dev *dev, int resource_no)
69 return dev->resource[resource_no].end;
72 static inline unsigned long macio_resource_len(struct macio_dev *dev, int resource_no)
74 struct resource *res = &dev->resource[resource_no];
75 if (res->start == 0 || res->end == 0 || res->end < res->start)
77 return res->end - res->start + 1;
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);
85 static inline int macio_irq_count(struct macio_dev *dev)
87 return dev->n_interrupts;
90 static inline int macio_irq(struct macio_dev *dev, int irq_no)
92 return dev->interrupt[irq_no].start;
95 static inline void macio_set_drvdata(struct macio_dev *dev, void *data)
97 dev_set_drvdata(&dev->ofdev.dev, data);
100 static inline void* macio_get_drvdata(struct macio_dev *dev)
102 return dev_get_drvdata(&dev->ofdev.dev);
105 static inline struct device_node *macio_get_of_node(struct macio_dev *mdev)
107 return mdev->ofdev.node;
111 static inline struct pci_dev *macio_get_pci_dev(struct macio_dev *mdev)
113 return mdev->bus->pdev;
118 * A driver for a mac-io chip based device
123 struct of_device_id *match_table;
124 struct module *owner;
126 int (*probe)(struct macio_dev* dev, const struct of_device_id *match);
127 int (*remove)(struct macio_dev* dev);
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);
133 struct device_driver driver;
135 #define to_macio_driver(drv) container_of(drv,struct macio_driver, driver)
137 extern int macio_register_driver(struct macio_driver *);
138 extern void macio_unregister_driver(struct macio_driver *);
140 #endif /* __MACIO_ASIC_H__ */