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 #include <linux/device.h>
15
16
17 /*
18 * Each Zorro board has a 32-bit ID of the form
19 *
20 * mmmmmmmmmmmmmmmmppppppppeeeeeeee
21 *
22 * with
23 *
24 * mmmmmmmmmmmmmmmm 16-bit Manufacturer ID (assigned by CBM (sigh))
25 * pppppppp 8-bit Product ID (assigned by manufacturer)
26 * eeeeeeee 8-bit Extended Product ID (currently only used
27 * for some GVP boards)
28 */
29
30
31 #define ZORRO_MANUF(id) ((id) >> 16)
32 #define ZORRO_PROD(id) (((id) >> 8) & 0xff)
33 #define ZORRO_EPC(id) ((id) & 0xff)
34
35 #define ZORRO_ID(manuf, prod, epc) \
36 ((ZORRO_MANUF_##manuf << 16) | ((prod) << 8) | (epc))
37
38 typedef __u32 zorro_id;
39
40
41 #define ZORRO_WILDCARD (0xffffffff) /* not official */
42
43 /* Include the ID list */
44 #include <linux/zorro_ids.h>
45
46
47 /*
48 * GVP identifies most of its products through the 'extended product code'
49 * (epc). The epc has to be ANDed with the GVP_PRODMASK before the
50 * identification.
51 */
52
53 #define GVP_PRODMASK (0xf8)
54 #define GVP_SCSICLKMASK (0x01)
55
56 enum GVP_flags {
57 GVP_IO = 0x01,
58 GVP_ACCEL = 0x02,
59 GVP_SCSI = 0x04,
60 GVP_24BITDMA = 0x08,
61 GVP_25BITDMA = 0x10,
62 GVP_NOBANK = 0x20,
63 GVP_14MHZ = 0x40,
64 };
65
66
67 struct Node {
68 struct Node *ln_Succ; /* Pointer to next (successor) */
69 struct Node *ln_Pred; /* Pointer to previous (predecessor) */
70 __u8 ln_Type;
71 __s8 ln_Pri; /* Priority, for sorting */
72 __s8 *ln_Name; /* ID string, null terminated */
73 } __attribute__ ((packed));
74
75 struct ExpansionRom {
76 /* -First 16 bytes of the expansion ROM */
77 __u8 er_Type; /* Board type, size and flags */
78 __u8 er_Product; /* Product number, assigned by manufacturer */
79 __u8 er_Flags; /* Flags */
80 __u8 er_Reserved03; /* Must be zero ($ff inverted) */
81 __u16 er_Manufacturer; /* Unique ID, ASSIGNED BY COMMODORE-AMIGA! */
82 __u32 er_SerialNumber; /* Available for use by manufacturer */
83 __u16 er_InitDiagVec; /* Offset to optional "DiagArea" structure */
84 __u8 er_Reserved0c;
85 __u8 er_Reserved0d;
86 __u8 er_Reserved0e;
87 __u8 er_Reserved0f;
88 } __attribute__ ((packed));
89
90 /* er_Type board type bits */
91 #define ERT_TYPEMASK 0xc0
92 #define ERT_ZORROII 0xc0
93 #define ERT_ZORROIII 0x80
94
95 /* other bits defined in er_Type */
96 #define ERTB_MEMLIST 5 /* Link RAM into free memory list */
97 #define ERTF_MEMLIST (1<<5)
98
99 struct ConfigDev {
100 struct Node cd_Node;
101 __u8 cd_Flags; /* (read/write) */
102 __u8 cd_Pad; /* reserved */
103 struct ExpansionRom cd_Rom; /* copy of board's expansion ROM */
104 void *cd_BoardAddr; /* where in memory the board was placed */
105 __u32 cd_BoardSize; /* size of board in bytes */
106 __u16 cd_SlotAddr; /* which slot number (PRIVATE) */
107 __u16 cd_SlotSize; /* number of slots (PRIVATE) */
108 void *cd_Driver; /* pointer to node of driver */
109 struct ConfigDev *cd_NextCD; /* linked list of drivers to config */
110 __u32 cd_Unused[4]; /* for whatever the driver wants */
111 } __attribute__ ((packed));
112
113 #define ZORRO_NUM_AUTO 16
114
115 #ifdef __KERNEL__
116
117 #include <linux/init.h>
118 #include <linux/ioport.h>
119
120 #include <asm/zorro.h>
121
122
123 /*
124 * Zorro devices
125 */
126
127 struct zorro_dev {
128 struct ExpansionRom rom;
129 zorro_id id;
130 struct zorro_driver *driver; /* which driver has allocated this device */
131 struct device dev; /* Generic device interface */
132 u16 slotaddr;
133 u16 slotsize;
134 char name[64];
135 struct resource resource;
136 };
137
138 #define to_zorro_dev(n) container_of(n, struct zorro_dev, dev)
139
140
141 /*
142 * Zorro bus
143 */
144
145 struct zorro_bus {
146 struct list_head devices; /* list of devices on this bus */
147 unsigned int num_resources; /* number of resources */
148 struct resource resources[4]; /* address space routed to this bus */
149 struct device dev;
150 char name[10];
151 };
152
153 extern struct zorro_bus zorro_bus; /* single Zorro bus */
154 extern struct bus_type zorro_bus_type;
155
156
157 /*
158 * Zorro device IDs
159 */
160
161 struct zorro_device_id {
162 zorro_id id; /* Device ID or ZORRO_WILDCARD */
163 unsigned long driver_data; /* Data private to the driver */
164 };
165
166
167 /*
168 * Zorro device drivers
169 */
170
171 struct zorro_driver {
172 struct list_head node;
173 char *name;
174 const struct zorro_device_id *id_table; /* NULL if wants all devices */
175 int (*probe)(struct zorro_dev *z, const struct zorro_device_id *id); /* New device inserted */
176 void (*remove)(struct zorro_dev *z); /* Device removed (NULL if not a hot-plug capable driver) */
177 struct device_driver driver;
178 };
179
180 #define to_zorro_driver(drv) container_of(drv, struct zorro_driver, driver)
181
182
183 #define zorro_for_each_dev(dev) \
184 for (dev = &zorro_autocon[0]; dev < zorro_autocon+zorro_num_autocon; dev++)
185
186
187 /* New-style probing */
188 extern int zorro_register_driver(struct zorro_driver *);
189 extern void zorro_unregister_driver(struct zorro_driver *);
190 extern const struct zorro_device_id *zorro_match_device(const struct zorro_device_id *ids, const struct zorro_dev *z);
191 static inline struct zorro_driver *zorro_dev_driver(const struct zorro_dev *z)
192 {
193 return z->driver;
194 }
195
196
197 extern unsigned int zorro_num_autocon; /* # of autoconfig devices found */
198 extern struct zorro_dev zorro_autocon[ZORRO_NUM_AUTO];
199
200
201 /*
202 * Zorro Functions
203 */
204
205 extern struct zorro_dev *zorro_find_device(zorro_id id,
206 struct zorro_dev *from);
207
208 #define zorro_resource_start(z) ((z)->resource.start)
209 #define zorro_resource_end(z) ((z)->resource.end)
210 #define zorro_resource_len(z) ((z)->resource.end-(z)->resource.start+1)
211 #define zorro_resource_flags(z) ((z)->resource.flags)
212
213 #define zorro_request_device(z, name) \
214 request_mem_region(zorro_resource_start(z), zorro_resource_len(z), name)
215 #define zorro_release_device(z) \
216 release_mem_region(zorro_resource_start(z), zorro_resource_len(z))
217
218 /* Similar to the helpers above, these manipulate per-zorro_dev
219 * driver-specific data. They are really just a wrapper around
220 * the generic device structure functions of these calls.
221 */
222 static inline void *zorro_get_drvdata (struct zorro_dev *z)
223 {
224 return dev_get_drvdata(&z->dev);
225 }
226
227 static inline void zorro_set_drvdata (struct zorro_dev *z, void *data)
228 {
229 dev_set_drvdata(&z->dev, data);
230 }
231
232
233 /*
234 * Bitmask indicating portions of available Zorro II RAM that are unused
235 * by the system. Every bit represents a 64K chunk, for a maximum of 8MB
236 * (128 chunks, physical 0x00200000-0x009fffff).
237 *
238 * If you want to use (= allocate) portions of this RAM, you should clear
239 * the corresponding bits.
240 */
241
242 extern DECLARE_BITMAP(zorro_unused_z2ram, 128);
243
244 #define Z2RAM_START (0x00200000)
245 #define Z2RAM_END (0x00a00000)
246 #define Z2RAM_SIZE (0x00800000)
247 #define Z2RAM_CHUNKSIZE (0x00010000)
248 #define Z2RAM_CHUNKMASK (0x0000ffff)
249 #define Z2RAM_CHUNKSHIFT (16)
250
251
252 #endif /* __KERNEL__ */
253
254 #endif /* _LINUX_ZORRO_H */
255
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