1 /* 2 * linux/zorro.h -- Amiga AutoConfig (Zorro) Bus Definitions 3 * 4 * Copyright (C) 1995--2003 Geert Uytterhoeven 5 * 6 * This file is subject to the terms and conditions of the GNU General Public 7 * License. See the file COPYING in the main directory of this archive 8 * for more details. 9 */ 10 11 #ifndef _LINUX_ZORRO_H 12 #define _LINUX_ZORRO_H 13 14 15 #include <uapi/linux/zorro.h> 16 17 #include <linux/device.h> 18 #include <linux/init.h> 19 #include <linux/ioport.h> 20 #include <linux/mod_devicetable.h> 21 22 #include <asm/zorro.h> 23 24 25 /* 26 * Zorro devices 27 */ 28 29 struct zorro_dev { 30 struct ExpansionRom rom; 31 zorro_id id; 32 struct zorro_driver *driver; /* which driver has allocated this device */ 33 struct device dev; /* Generic device interface */ 34 u16 slotaddr; 35 u16 slotsize; 36 char name[64]; 37 struct resource resource; 38 }; 39 40 #define to_zorro_dev(n) container_of(n, struct zorro_dev, dev) 41 42 43 /* 44 * Zorro bus 45 */ 46 47 extern struct bus_type zorro_bus_type; 48 49 50 /* 51 * Zorro device drivers 52 */ 53 54 struct zorro_driver { 55 struct list_head node; 56 char *name; 57 const struct zorro_device_id *id_table; /* NULL if wants all devices */ 58 int (*probe)(struct zorro_dev *z, const struct zorro_device_id *id); /* New device inserted */ 59 void (*remove)(struct zorro_dev *z); /* Device removed (NULL if not a hot-plug capable driver) */ 60 struct device_driver driver; 61 }; 62 63 #define to_zorro_driver(drv) container_of(drv, struct zorro_driver, driver) 64 65 66 #define zorro_for_each_dev(dev) \ 67 for (dev = &zorro_autocon[0]; dev < zorro_autocon+zorro_num_autocon; dev++) 68 69 70 /* New-style probing */ 71 extern int zorro_register_driver(struct zorro_driver *); 72 extern void zorro_unregister_driver(struct zorro_driver *); 73 extern const struct zorro_device_id *zorro_match_device(const struct zorro_device_id *ids, const struct zorro_dev *z); 74 static inline struct zorro_driver *zorro_dev_driver(const struct zorro_dev *z) 75 { 76 return z->driver; 77 } 78 79 80 extern unsigned int zorro_num_autocon; /* # of autoconfig devices found */ 81 extern struct zorro_dev *zorro_autocon; 82 83 84 /* 85 * Minimal information about a Zorro device, passed from bootinfo 86 * Only available temporarily, i.e. until initmem has been freed! 87 */ 88 89 struct zorro_dev_init { 90 struct ExpansionRom rom; 91 u16 slotaddr; 92 u16 slotsize; 93 u32 boardaddr; 94 u32 boardsize; 95 }; 96 97 extern struct zorro_dev_init zorro_autocon_init[ZORRO_NUM_AUTO] __initdata; 98 99 100 /* 101 * Zorro Functions 102 */ 103 104 extern struct zorro_dev *zorro_find_device(zorro_id id, 105 struct zorro_dev *from); 106 107 #define zorro_resource_start(z) ((z)->resource.start) 108 #define zorro_resource_end(z) ((z)->resource.end) 109 #define zorro_resource_len(z) (resource_size(&(z)->resource)) 110 #define zorro_resource_flags(z) ((z)->resource.flags) 111 112 #define zorro_request_device(z, name) \ 113 request_mem_region(zorro_resource_start(z), zorro_resource_len(z), name) 114 #define zorro_release_device(z) \ 115 release_mem_region(zorro_resource_start(z), zorro_resource_len(z)) 116 117 /* Similar to the helpers above, these manipulate per-zorro_dev 118 * driver-specific data. They are really just a wrapper around 119 * the generic device structure functions of these calls. 120 */ 121 static inline void *zorro_get_drvdata (struct zorro_dev *z) 122 { 123 return dev_get_drvdata(&z->dev); 124 } 125 126 static inline void zorro_set_drvdata (struct zorro_dev *z, void *data) 127 { 128 dev_set_drvdata(&z->dev, data); 129 } 130 131 132 /* 133 * Bitmask indicating portions of available Zorro II RAM that are unused 134 * by the system. Every bit represents a 64K chunk, for a maximum of 8MB 135 * (128 chunks, physical 0x00200000-0x009fffff). 136 * 137 * If you want to use (= allocate) portions of this RAM, you should clear 138 * the corresponding bits. 139 */ 140 141 extern DECLARE_BITMAP(zorro_unused_z2ram, 128); 142 143 #define Z2RAM_START (0x00200000) 144 #define Z2RAM_END (0x00a00000) 145 #define Z2RAM_SIZE (0x00800000) 146 #define Z2RAM_CHUNKSIZE (0x00010000) 147 #define Z2RAM_CHUNKMASK (0x0000ffff) 148 #define Z2RAM_CHUNKSHIFT (16) 149 150 151 #endif /* _LINUX_ZORRO_H */ 152