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 of_device ofdev; 42 int n_resources; 43 struct resource resource[MACIO_DEV_COUNT_RESOURCES]; 44 int n_interrupts; 45 struct resource interrupt[MACIO_DEV_COUNT_IRQS]; 46 }; 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) 49 50 extern struct macio_dev *macio_dev_get(struct macio_dev *dev); 51 extern void macio_dev_put(struct macio_dev *dev); 52 53 /* 54 * Accessors to resources & interrupts and other device 55 * fields 56 */ 57 58 static inline int macio_resource_count(struct macio_dev *dev) 59 { 60 return dev->n_resources; 61 } 62 63 static inline unsigned long macio_resource_start(struct macio_dev *dev, int resource_no) 64 { 65 return dev->resource[resource_no].start; 66 } 67 68 static inline unsigned long macio_resource_end(struct macio_dev *dev, int resource_no) 69 { 70 return dev->resource[resource_no].end; 71 } 72 73 static inline unsigned long macio_resource_len(struct macio_dev *dev, int resource_no) 74 { 75 struct resource *res = &dev->resource[resource_no]; 76 if (res->start == 0 || res->end == 0 || res->end < res->start) 77 return 0; 78 return res->end - res->start + 1; 79 } 80 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); 85 86 static inline int macio_irq_count(struct macio_dev *dev) 87 { 88 return dev->n_interrupts; 89 } 90 91 static inline int macio_irq(struct macio_dev *dev, int irq_no) 92 { 93 return dev->interrupt[irq_no].start; 94 } 95 96 static inline void macio_set_drvdata(struct macio_dev *dev, void *data) 97 { 98 dev_set_drvdata(&dev->ofdev.dev, data); 99 } 100 101 static inline void* macio_get_drvdata(struct macio_dev *dev) 102 { 103 return dev_get_drvdata(&dev->ofdev.dev); 104 } 105 106 static inline struct device_node *macio_get_of_node(struct macio_dev *mdev) 107 { 108 return mdev->ofdev.node; 109 } 110 111 #ifdef CONFIG_PCI 112 static inline struct pci_dev *macio_get_pci_dev(struct macio_dev *mdev) 113 { 114 return mdev->bus->pdev; 115 } 116 #endif 117 118 /* 119 * A driver for a mac-io chip based device 120 */ 121 struct macio_driver 122 { 123 char *name; 124 struct of_device_id *match_table; 125 struct module *owner; 126 127 int (*probe)(struct macio_dev* dev, const struct of_device_id *match); 128 int (*remove)(struct macio_dev* dev); 129 130 int (*suspend)(struct macio_dev* dev, pm_message_t state); 131 int (*resume)(struct macio_dev* dev); 132 int (*shutdown)(struct macio_dev* dev); 133 134 struct device_driver driver; 135 }; 136 #define to_macio_driver(drv) container_of(drv,struct macio_driver, driver) 137 138 extern int macio_register_driver(struct macio_driver *); 139 extern void macio_unregister_driver(struct macio_driver *); 140 141 #endif /* __KERNEL__ */ 142 #endif /* __MACIO_ASIC_H__ */ 143