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