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 59 static inline int macio_resource_count(struct macio_dev *dev) 60 { 61 return dev->n_resources; 62 } 63 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 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 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 resource_size(res); 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 89 static inline int macio_irq_count(struct macio_dev *dev) 90 { 91 return dev->n_interrupts; 92 } 93 94 static inline int macio_irq(struct macio_dev *dev, int irq_no) 95 { 96 return dev->interrupt[irq_no].start; 97 } 98 99 static inline void macio_set_drvdata(struct macio_dev *dev, void *data) 100 { 101 dev_set_drvdata(&dev->ofdev.dev, data); 102 } 103 104 static inline void* macio_get_drvdata(struct macio_dev *dev) 105 { 106 return dev_get_drvdata(&dev->ofdev.dev); 107 } 108 109 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 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