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