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);
zorro_dev_driver(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 */
zorro_get_drvdata(struct zorro_dev * z)121 static inline void *zorro_get_drvdata (struct zorro_dev *z)
122 {
123 return dev_get_drvdata(&z->dev);
124 }
125
zorro_set_drvdata(struct zorro_dev * z,void * data)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