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_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 */
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