1#ifndef __MACIO_ASIC_H__ 2#define __MACIO_ASIC_H__ 3#ifdef __KERNEL__ 4 5#include <linux/of_device.h> 6 7extern struct bus_type macio_bus_type; 8 9/* MacIO device driver is defined later */ 10struct macio_driver; 11struct 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 */ 24struct 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 */ 37struct 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 51extern struct macio_dev *macio_dev_get(struct macio_dev *dev); 52extern void macio_dev_put(struct macio_dev *dev); 53 54/* 55 * Accessors to resources & interrupts and other device 56 * fields 57 */ 58 59static inline int macio_resource_count(struct macio_dev *dev) 60{ 61 return dev->n_resources; 62} 63 64static inline unsigned long macio_resource_start(struct macio_dev *dev, int resource_no) 65{ 66 return dev->resource[resource_no].start; 67} 68 69static inline unsigned long macio_resource_end(struct macio_dev *dev, int resource_no) 70{ 71 return dev->resource[resource_no].end; 72} 73 74static 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 82extern int macio_enable_devres(struct macio_dev *dev); 83 84extern int macio_request_resource(struct macio_dev *dev, int resource_no, const char *name); 85extern void macio_release_resource(struct macio_dev *dev, int resource_no); 86extern int macio_request_resources(struct macio_dev *dev, const char *name); 87extern void macio_release_resources(struct macio_dev *dev); 88 89static inline int macio_irq_count(struct macio_dev *dev) 90{ 91 return dev->n_interrupts; 92} 93 94static inline int macio_irq(struct macio_dev *dev, int irq_no) 95{ 96 return dev->interrupt[irq_no].start; 97} 98 99static inline void macio_set_drvdata(struct macio_dev *dev, void *data) 100{ 101 dev_set_drvdata(&dev->ofdev.dev, data); 102} 103 104static inline void* macio_get_drvdata(struct macio_dev *dev) 105{ 106 return dev_get_drvdata(&dev->ofdev.dev); 107} 108 109static 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 115static 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 */ 124struct 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 140extern int macio_register_driver(struct macio_driver *); 141extern void macio_unregister_driver(struct macio_driver *); 142 143#endif /* __KERNEL__ */ 144#endif /* __MACIO_ASIC_H__ */ 145