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 #ifndef __ASSEMBLY__
15
16 #include <linux/device.h>
17
18
19 /*
20 * Each Zorro board has a 32-bit ID of the form
21 *
22 * mmmmmmmmmmmmmmmmppppppppeeeeeeee
23 *
24 * with
25 *
26 * mmmmmmmmmmmmmmmm 16-bit Manufacturer ID (assigned by CBM (sigh))
27 * pppppppp 8-bit Product ID (assigned by manufacturer)
28 * eeeeeeee 8-bit Extended Product ID (currently only used
29 * for some GVP boards)
30 */
31
32
33 #define ZORRO_MANUF(id) ((id) >> 16)
34 #define ZORRO_PROD(id) (((id) >> 8) & 0xff)
35 #define ZORRO_EPC(id) ((id) & 0xff)
36
37 #define ZORRO_ID(manuf, prod, epc) \
38 ((ZORRO_MANUF_##manuf << 16) | ((prod) << 8) | (epc))
39
40 typedef __u32 zorro_id;
41
42
43 #define ZORRO_WILDCARD (0xffffffff) /* not official */
44
45 /* Include the ID list */
46 #include <linux/zorro_ids.h>
47
48
49 /*
50 * GVP identifies most of its products through the 'extended product code'
51 * (epc). The epc has to be ANDed with the GVP_PRODMASK before the
52 * identification.
53 */
54
55 #define GVP_PRODMASK (0xf8)
56 #define GVP_SCSICLKMASK (0x01)
57
58 enum GVP_flags {
59 GVP_IO = 0x01,
60 GVP_ACCEL = 0x02,
61 GVP_SCSI = 0x04,
62 GVP_24BITDMA = 0x08,
63 GVP_25BITDMA = 0x10,
64 GVP_NOBANK = 0x20,
65 GVP_14MHZ = 0x40,
66 };
67
68
69 struct Node {
70 struct Node *ln_Succ; /* Pointer to next (successor) */
71 struct Node *ln_Pred; /* Pointer to previous (predecessor) */
72 __u8 ln_Type;
73 __s8 ln_Pri; /* Priority, for sorting */
74 __s8 *ln_Name; /* ID string, null terminated */
75 } __attribute__ ((packed));
76
77 struct ExpansionRom {
78 /* -First 16 bytes of the expansion ROM */
79 __u8 er_Type; /* Board type, size and flags */
80 __u8 er_Product; /* Product number, assigned by manufacturer */
81 __u8 er_Flags; /* Flags */
82 __u8 er_Reserved03; /* Must be zero ($ff inverted) */
83 __u16 er_Manufacturer; /* Unique ID, ASSIGNED BY COMMODORE-AMIGA! */
84 __u32 er_SerialNumber; /* Available for use by manufacturer */
85 __u16 er_InitDiagVec; /* Offset to optional "DiagArea" structure */
86 __u8 er_Reserved0c;
87 __u8 er_Reserved0d;
88 __u8 er_Reserved0e;
89 __u8 er_Reserved0f;
90 } __attribute__ ((packed));
91
92 /* er_Type board type bits */
93 #define ERT_TYPEMASK 0xc0
94 #define ERT_ZORROII 0xc0
95 #define ERT_ZORROIII 0x80
96
97 /* other bits defined in er_Type */
98 #define ERTB_MEMLIST 5 /* Link RAM into free memory list */
99 #define ERTF_MEMLIST (1<<5)
100
101 struct ConfigDev {
102 struct Node cd_Node;
103 __u8 cd_Flags; /* (read/write) */
104 __u8 cd_Pad; /* reserved */
105 struct ExpansionRom cd_Rom; /* copy of board's expansion ROM */
106 void *cd_BoardAddr; /* where in memory the board was placed */
107 __u32 cd_BoardSize; /* size of board in bytes */
108 __u16 cd_SlotAddr; /* which slot number (PRIVATE) */
109 __u16 cd_SlotSize; /* number of slots (PRIVATE) */
110 void *cd_Driver; /* pointer to node of driver */
111 struct ConfigDev *cd_NextCD; /* linked list of drivers to config */
112 __u32 cd_Unused[4]; /* for whatever the driver wants */
113 } __attribute__ ((packed));
114
115 #else /* __ASSEMBLY__ */
116
117 LN_Succ = 0
118 LN_Pred = LN_Succ+4
119 LN_Type = LN_Pred+4
120 LN_Pri = LN_Type+1
121 LN_Name = LN_Pri+1
122 LN_sizeof = LN_Name+4
123
124 ER_Type = 0
125 ER_Product = ER_Type+1
126 ER_Flags = ER_Product+1
127 ER_Reserved03 = ER_Flags+1
128 ER_Manufacturer = ER_Reserved03+1
129 ER_SerialNumber = ER_Manufacturer+2
130 ER_InitDiagVec = ER_SerialNumber+4
131 ER_Reserved0c = ER_InitDiagVec+2
132 ER_Reserved0d = ER_Reserved0c+1
133 ER_Reserved0e = ER_Reserved0d+1
134 ER_Reserved0f = ER_Reserved0e+1
135 ER_sizeof = ER_Reserved0f+1
136
137 CD_Node = 0
138 CD_Flags = CD_Node+LN_sizeof
139 CD_Pad = CD_Flags+1
140 CD_Rom = CD_Pad+1
141 CD_BoardAddr = CD_Rom+ER_sizeof
142 CD_BoardSize = CD_BoardAddr+4
143 CD_SlotAddr = CD_BoardSize+4
144 CD_SlotSize = CD_SlotAddr+2
145 CD_Driver = CD_SlotSize+2
146 CD_NextCD = CD_Driver+4
147 CD_Unused = CD_NextCD+4
148 CD_sizeof = CD_Unused+(4*4)
149
150 #endif /* __ASSEMBLY__ */
151
152 #ifndef __ASSEMBLY__
153
154 #define ZORRO_NUM_AUTO 16
155
156 #ifdef __KERNEL__
157
158 #include <linux/init.h>
159 #include <linux/ioport.h>
160
161 #include <asm/zorro.h>
162
163
164 /*
165 * Zorro devices
166 */
167
168 struct zorro_dev {
169 struct ExpansionRom rom;
170 zorro_id id;
171 struct zorro_driver *driver; /* which driver has allocated this device */
172 struct device dev; /* Generic device interface */
173 u16 slotaddr;
174 u16 slotsize;
175 char name[64];
176 struct resource resource;
177 };
178
179 #define to_zorro_dev(n) container_of(n, struct zorro_dev, dev)
180
181
182 /*
183 * Zorro bus
184 */
185
186 struct zorro_bus {
187 struct list_head devices; /* list of devices on this bus */
188 unsigned int num_resources; /* number of resources */
189 struct resource resources[4]; /* address space routed to this bus */
190 struct device dev;
191 char name[10];
192 };
193
194 extern struct zorro_bus zorro_bus; /* single Zorro bus */
195 extern struct bus_type zorro_bus_type;
196
197
198 /*
199 * Zorro device IDs
200 */
201
202 struct zorro_device_id {
203 zorro_id id; /* Device ID or ZORRO_WILDCARD */
204 unsigned long driver_data; /* Data private to the driver */
205 };
206
207
208 /*
209 * Zorro device drivers
210 */
211
212 struct zorro_driver {
213 struct list_head node;
214 char *name;
215 const struct zorro_device_id *id_table; /* NULL if wants all devices */
216 int (*probe)(struct zorro_dev *z, const struct zorro_device_id *id); /* New device inserted */
217 void (*remove)(struct zorro_dev *z); /* Device removed (NULL if not a hot-plug capable driver) */
218 struct device_driver driver;
219 };
220
221 #define to_zorro_driver(drv) container_of(drv, struct zorro_driver, driver)
222
223
224 #define zorro_for_each_dev(dev) \
225 for (dev = &zorro_autocon[0]; dev < zorro_autocon+zorro_num_autocon; dev++)
226
227
228 /* New-style probing */
229 extern int zorro_register_driver(struct zorro_driver *);
230 extern void zorro_unregister_driver(struct zorro_driver *);
231 extern const struct zorro_device_id *zorro_match_device(const struct zorro_device_id *ids, const struct zorro_dev *z);
232 static inline struct zorro_driver *zorro_dev_driver(const struct zorro_dev *z)
233 {
234 return z->driver;
235 }
236
237
238 extern unsigned int zorro_num_autocon; /* # of autoconfig devices found */
239 extern struct zorro_dev zorro_autocon[ZORRO_NUM_AUTO];
240
241
242 /*
243 * Zorro Functions
244 */
245
246 extern struct zorro_dev *zorro_find_device(zorro_id id,
247 struct zorro_dev *from);
248
249 #define zorro_resource_start(z) ((z)->resource.start)
250 #define zorro_resource_end(z) ((z)->resource.end)
251 #define zorro_resource_len(z) ((z)->resource.end-(z)->resource.start+1)
252 #define zorro_resource_flags(z) ((z)->resource.flags)
253
254 #define zorro_request_device(z, name) \
255 request_mem_region(zorro_resource_start(z), zorro_resource_len(z), name)
256 #define zorro_release_device(z) \
257 release_mem_region(zorro_resource_start(z), zorro_resource_len(z))
258
259 /* Similar to the helpers above, these manipulate per-zorro_dev
260 * driver-specific data. They are really just a wrapper around
261 * the generic device structure functions of these calls.
262 */
263 static inline void *zorro_get_drvdata (struct zorro_dev *z)
264 {
265 return dev_get_drvdata(&z->dev);
266 }
267
268 static inline void zorro_set_drvdata (struct zorro_dev *z, void *data)
269 {
270 dev_set_drvdata(&z->dev, data);
271 }
272
273
274 /*
275 * A helper function which helps ensure correct zorro_driver
276 * setup and cleanup for commonly-encountered hotplug/modular cases
277 *
278 * This MUST stay in a header, as it checks for -DMODULE
279 */
280 static inline int zorro_module_init(struct zorro_driver *drv)
281 {
282 int rc = zorro_register_driver(drv);
283
284 if (rc > 0)
285 return 0;
286
287 /* iff CONFIG_HOTPLUG and built into kernel, we should
288 * leave the driver around for future hotplug events.
289 * For the module case, a hotplug daemon of some sort
290 * should load a module in response to an insert event. */
291 #if defined(CONFIG_HOTPLUG) && !defined(MODULE)
292 if (rc == 0)
293 return 0;
294 #else
295 if (rc == 0)
296 rc = -ENODEV;
297 #endif
298
299 /* if we get here, we need to clean up Zorro driver instance
300 * and return some sort of error */
301 zorro_unregister_driver(drv);
302
303 return rc;
304 }
305
306
307 /*
308 * Bitmask indicating portions of available Zorro II RAM that are unused
309 * by the system. Every bit represents a 64K chunk, for a maximum of 8MB
310 * (128 chunks, physical 0x00200000-0x009fffff).
311 *
312 * If you want to use (= allocate) portions of this RAM, you should clear
313 * the corresponding bits.
314 */
315
316 extern DECLARE_BITMAP(zorro_unused_z2ram, 128);
317
318 #define Z2RAM_START (0x00200000)
319 #define Z2RAM_END (0x00a00000)
320 #define Z2RAM_SIZE (0x00800000)
321 #define Z2RAM_CHUNKSIZE (0x00010000)
322 #define Z2RAM_CHUNKMASK (0x0000ffff)
323 #define Z2RAM_CHUNKSHIFT (16)
324
325
326 #endif /* !__ASSEMBLY__ */
327 #endif /* __KERNEL__ */
328
329 #endif /* _LINUX_ZORRO_H */
330
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