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