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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); |
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) (resource_size(&(z)->resource)) |
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 | */ |
202 | static inline void *zorro_get_drvdata (struct zorro_dev *z) |
203 | { |
204 | return dev_get_drvdata(&z->dev); |
205 | } |
206 | |
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 |
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