xref: /openbmc/linux/include/linux/zorro.h (revision fac58b4a)
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 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 
46 struct 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(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 */
63 extern int zorro_register_driver(struct zorro_driver *);
64 extern void zorro_unregister_driver(struct zorro_driver *);
65 
66 
67 extern unsigned int zorro_num_autocon;	/* # of autoconfig devices found */
68 extern 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 
76 struct zorro_dev_init {
77 	struct ExpansionRom rom;
78 	u16 slotaddr;
79 	u16 slotsize;
80 	u32 boardaddr;
81 	u32 boardsize;
82 };
83 
84 extern struct zorro_dev_init zorro_autocon_init[ZORRO_NUM_AUTO] __initdata;
85 
86 
87     /*
88      *  Zorro Functions
89      */
90 
91 extern 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  */
zorro_get_drvdata(struct zorro_dev * z)108 static inline void *zorro_get_drvdata (struct zorro_dev *z)
109 {
110 	return dev_get_drvdata(&z->dev);
111 }
112 
zorro_set_drvdata(struct zorro_dev * z,void * data)113 static 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 
128 extern 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 */
139