1 #ifndef __MACIO_ASIC_H__
2 #define __MACIO_ASIC_H__
4 #include <linux/mod_devicetable.h>
5 #include <asm/of_device.h>
7 extern struct bus_type macio_bus_type;
9 /* MacIO device driver is defined later */
13 #define MACIO_DEV_COUNT_RESOURCES 8
14 #define MACIO_DEV_COUNT_IRQS 8
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).
22 * The pdev field can be NULL on non-PCI machines
26 struct macio_chip *chip; /* macio_chip (private use) */
27 int index; /* macio chip index in system */
29 struct pci_dev *pdev; /* PCI device hosting this bus */
34 * the macio_dev structure is used to describe a device
35 * within an Apple MacIO ASIC.
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;
43 struct resource resource[MACIO_DEV_COUNT_RESOURCES];
45 struct resource interrupt[MACIO_DEV_COUNT_IRQS];
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)
50 extern struct macio_dev *macio_dev_get(struct macio_dev *dev);
51 extern void macio_dev_put(struct macio_dev *dev);
54 * Accessors to resources & interrupts and other device
58 static inline int macio_resource_count(struct macio_dev *dev)
60 return dev->n_resources;
63 static inline unsigned long macio_resource_start(struct macio_dev *dev, int resource_no)
65 return dev->resource[resource_no].start;
68 static inline unsigned long macio_resource_end(struct macio_dev *dev, int resource_no)
70 return dev->resource[resource_no].end;
73 static inline unsigned long macio_resource_len(struct macio_dev *dev, int resource_no)
75 struct resource *res = &dev->resource[resource_no];
76 if (res->start == 0 || res->end == 0 || res->end < res->start)
78 return res->end - res->start + 1;
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);
86 static inline int macio_irq_count(struct macio_dev *dev)
88 return dev->n_interrupts;
91 static inline int macio_irq(struct macio_dev *dev, int irq_no)
93 return dev->interrupt[irq_no].start;
96 static inline void macio_set_drvdata(struct macio_dev *dev, void *data)
98 dev_set_drvdata(&dev->ofdev.dev, data);
101 static inline void* macio_get_drvdata(struct macio_dev *dev)
103 return dev_get_drvdata(&dev->ofdev.dev);
106 static inline struct device_node *macio_get_of_node(struct macio_dev *mdev)
108 return mdev->ofdev.node;
112 static inline struct pci_dev *macio_get_pci_dev(struct macio_dev *mdev)
114 return mdev->bus->pdev;
119 * A driver for a mac-io chip based device
124 struct of_device_id *match_table;
125 struct module *owner;
127 int (*probe)(struct macio_dev* dev, const struct of_device_id *match);
128 int (*remove)(struct macio_dev* dev);
130 int (*suspend)(struct macio_dev* dev, pm_message_t state);
131 int (*resume)(struct macio_dev* dev);
132 int (*shutdown)(struct macio_dev* dev);
134 struct device_driver driver;
136 #define to_macio_driver(drv) container_of(drv,struct macio_driver, driver)
138 extern int macio_register_driver(struct macio_driver *);
139 extern void macio_unregister_driver(struct macio_driver *);
141 #endif /* __MACIO_ASIC_H__ */