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1da177e4 LT |
1 | /* header file for DIO boards for the HP300 architecture. |
2 | * Maybe this should handle DIO-II later? | |
3 | * The general structure of this is vaguely based on how | |
4 | * the Amiga port handles Zorro boards. | |
5 | * Copyright (C) Peter Maydell 05/1998 <pmaydell@chiark.greenend.org.uk> | |
6 | * Converted to driver model Jochen Friedrich <jochen@scram.de> | |
7 | * | |
8 | * The board IDs are from the NetBSD kernel, which for once provided | |
9 | * helpful comments... | |
10 | * | |
11 | * This goes with drivers/dio/dio.c | |
12 | */ | |
13 | ||
14 | #ifndef _LINUX_DIO_H | |
15 | #define _LINUX_DIO_H | |
16 | ||
17 | /* The DIO boards in a system are distinguished by 'select codes' which | |
18 | * range from 0-63 (DIO) and 132-255 (DIO-II). | |
19 | * The DIO board with select code sc is located at physical address | |
20 | * 0x600000 + sc * 0x10000 | |
21 | * So DIO cards cover [0x600000-0x800000); the areas [0x200000-0x400000) and | |
22 | * [0x800000-0x1000000) are for additional space required by things | |
23 | * like framebuffers. [0x400000-0x600000) is for miscellaneous internal I/O. | |
24 | * On Linux, this is currently all mapped into the virtual address space | |
25 | * at 0xf0000000 on bootup. | |
26 | * DIO-II boards are at 0x1000000 + (sc - 132) * 0x400000 | |
27 | * which is address range [0x1000000-0x20000000) -- too big to map completely, | |
28 | * so currently we just don't handle DIO-II boards. It wouldn't be hard to | |
29 | * do with ioremap() though. | |
30 | */ | |
31 | ||
32 | #include <linux/device.h> | |
33 | ||
34 | #ifdef __KERNEL__ | |
35 | ||
36 | #include <asm/hp300hw.h> | |
37 | ||
38 | typedef __u16 dio_id; | |
39 | ||
40 | /* | |
41 | * DIO devices | |
42 | */ | |
43 | ||
44 | struct dio_dev { | |
45 | struct dio_bus *bus; | |
46 | dio_id id; | |
47 | int scode; | |
48 | struct dio_driver *driver; /* which driver has allocated this device */ | |
49 | struct device dev; /* Generic device interface */ | |
50 | u8 ipl; | |
51 | char name[64]; | |
52 | struct resource resource; | |
53 | }; | |
54 | ||
55 | #define to_dio_dev(n) container_of(n, struct dio_dev, dev) | |
56 | ||
57 | /* | |
58 | * DIO bus | |
59 | */ | |
60 | ||
61 | struct dio_bus { | |
62 | struct list_head devices; /* list of devices on this bus */ | |
63 | unsigned int num_resources; /* number of resources */ | |
64 | struct resource resources[2]; /* address space routed to this bus */ | |
65 | struct device dev; | |
66 | char name[10]; | |
67 | }; | |
68 | ||
69 | extern struct dio_bus dio_bus; /* Single DIO bus */ | |
70 | extern struct bus_type dio_bus_type; | |
71 | ||
72 | /* | |
73 | * DIO device IDs | |
74 | */ | |
75 | ||
76 | struct dio_device_id { | |
77 | dio_id id; /* Device ID or DIO_WILDCARD */ | |
78 | unsigned long driver_data; /* Data private to the driver */ | |
79 | }; | |
80 | ||
81 | /* | |
82 | * DIO device drivers | |
83 | */ | |
84 | ||
85 | struct dio_driver { | |
86 | struct list_head node; | |
87 | char *name; | |
88 | const struct dio_device_id *id_table; /* NULL if wants all devices */ | |
89 | int (*probe)(struct dio_dev *z, const struct dio_device_id *id); | |
90 | /* New device inserted */ | |
91 | void (*remove)(struct dio_dev *z); /* Device removed (NULL if not a hot-plug capable driver) */ | |
92 | struct device_driver driver; | |
93 | }; | |
94 | ||
95 | #define to_dio_driver(drv) container_of(drv, struct dio_driver, driver) | |
96 | ||
97 | /* DIO/DIO-II boards all have the following 8bit registers. | |
98 | * These are offsets from the base of the device. | |
99 | */ | |
100 | #define DIO_IDOFF 0x01 /* primary device ID */ | |
101 | #define DIO_IPLOFF 0x03 /* interrupt priority level */ | |
102 | #define DIO_SECIDOFF 0x15 /* secondary device ID */ | |
103 | #define DIOII_SIZEOFF 0x101 /* device size, DIO-II only */ | |
104 | #define DIO_VIRADDRBASE 0xf0000000UL /* vir addr where IOspace is mapped */ | |
105 | ||
106 | #define DIO_BASE 0x600000 /* start of DIO space */ | |
107 | #define DIO_END 0x1000000 /* end of DIO space */ | |
108 | #define DIO_DEVSIZE 0x10000 /* size of a DIO device */ | |
109 | ||
110 | #define DIOII_BASE 0x01000000 /* start of DIO-II space */ | |
111 | #define DIOII_END 0x20000000 /* end of DIO-II space */ | |
112 | #define DIOII_DEVSIZE 0x00400000 /* size of a DIO-II device */ | |
113 | ||
114 | /* Highest valid select code. If we add DIO-II support this should become | |
115 | * 256 for everything except HP320, which only has DIO. | |
116 | */ | |
117 | #define DIO_SCMAX (hp300_model == HP_320 ? 32 : 256) | |
118 | #define DIOII_SCBASE 132 /* lowest DIO-II select code */ | |
119 | #define DIO_SCINHOLE(scode) (((scode) >= 32) && ((scode) < DIOII_SCBASE)) | |
120 | #define DIO_ISDIOII(scode) ((scode) >= 132 && (scode) < 256) | |
121 | ||
122 | /* macros to read device IDs, given base address */ | |
123 | #define DIO_ID(baseaddr) in_8((baseaddr) + DIO_IDOFF) | |
124 | #define DIO_SECID(baseaddr) in_8((baseaddr) + DIO_SECIDOFF) | |
125 | ||
126 | /* extract the interrupt level */ | |
127 | #define DIO_IPL(baseaddr) (((in_8((baseaddr) + DIO_IPLOFF) >> 4) & 0x03) + 3) | |
128 | ||
129 | /* find the size of a DIO-II board's address space. | |
130 | * DIO boards are all fixed length. | |
131 | */ | |
132 | #define DIOII_SIZE(baseaddr) ((in_8((baseaddr) + DIOII_SIZEOFF) + 1) * 0x100000) | |
133 | ||
134 | /* general purpose macro for both DIO and DIO-II */ | |
135 | #define DIO_SIZE(scode, base) (DIO_ISDIOII((scode)) ? DIOII_SIZE((base)) : DIO_DEVSIZE) | |
136 | ||
137 | /* The hardware has primary and secondary IDs; we encode these in a single | |
138 | * int as PRIMARY ID & (SECONDARY ID << 8). | |
139 | * In practice this is only important for framebuffers, | |
140 | * and everybody else just sets ID fields equal to the DIO_ID_FOO value. | |
141 | */ | |
142 | #define DIO_ENCODE_ID(pr,sec) ((((int)sec & 0xff) << 8) | ((int)pr & 0xff)) | |
143 | /* macro to determine whether a given primary ID requires a secondary ID byte */ | |
144 | #define DIO_NEEDSSECID(id) ((id) == DIO_ID_FBUFFER) | |
145 | #define DIO_WILDCARD 0xff | |
146 | ||
147 | /* Now a whole slew of macros giving device IDs and descriptive strings: */ | |
148 | #define DIO_ID_DCA0 0x02 /* 98644A serial */ | |
149 | #define DIO_DESC_DCA0 "98644A DCA0 serial" | |
150 | #define DIO_ID_DCA0REM 0x82 /* 98644A serial */ | |
151 | #define DIO_DESC_DCA0REM "98644A DCA0REM serial" | |
152 | #define DIO_ID_DCA1 0x42 /* 98644A serial */ | |
153 | #define DIO_DESC_DCA1 "98644A DCA1 serial" | |
154 | #define DIO_ID_DCA1REM 0xc2 /* 98644A serial */ | |
155 | #define DIO_DESC_DCA1REM "98644A DCA1REM serial" | |
156 | #define DIO_ID_DCM 0x05 /* 98642A serial MUX */ | |
157 | #define DIO_DESC_DCM "98642A DCM serial MUX" | |
158 | #define DIO_ID_DCMREM 0x85 /* 98642A serial MUX */ | |
159 | #define DIO_DESC_DCMREM "98642A DCMREM serial MUX" | |
160 | #define DIO_ID_LAN 0x15 /* 98643A LAN */ | |
161 | #define DIO_DESC_LAN "98643A LANCE ethernet" | |
162 | #define DIO_ID_FHPIB 0x08 /* 98625A/98625B fast HP-IB */ | |
163 | #define DIO_DESC_FHPIB "98625A/98625B fast HPIB" | |
164 | #define DIO_ID_NHPIB 0x01 /* 98624A HP-IB (normal ie slow) */ | |
165 | #define DIO_DESC_NHPIB "98624A HPIB" | |
166 | #define DIO_ID_SCSI0 0x07 /* 98265A SCSI */ | |
167 | #define DIO_DESC_SCSI0 "98265A SCSI0" | |
168 | #define DIO_ID_SCSI1 0x27 /* ditto */ | |
169 | #define DIO_DESC_SCSI1 "98265A SCSI1" | |
170 | #define DIO_ID_SCSI2 0x47 /* ditto */ | |
171 | #define DIO_DESC_SCSI2 "98265A SCSI2" | |
172 | #define DIO_ID_SCSI3 0x67 /* ditto */ | |
173 | #define DIO_DESC_SCSI3 "98265A SCSI3" | |
174 | #define DIO_ID_FBUFFER 0x39 /* framebuffer: flavour is distinguished by secondary ID */ | |
175 | #define DIO_DESC_FBUFFER "bitmapped display" | |
176 | /* the NetBSD kernel source is a bit unsure as to what these next IDs actually do :-> */ | |
177 | #define DIO_ID_MISC0 0x03 /* 98622A */ | |
178 | #define DIO_DESC_MISC0 "98622A" | |
179 | #define DIO_ID_MISC1 0x04 /* 98623A */ | |
180 | #define DIO_DESC_MISC1 "98623A" | |
181 | #define DIO_ID_PARALLEL 0x06 /* internal parallel */ | |
182 | #define DIO_DESC_PARALLEL "internal parallel" | |
183 | #define DIO_ID_MISC2 0x09 /* 98287A keyboard */ | |
184 | #define DIO_DESC_MISC2 "98287A keyboard" | |
185 | #define DIO_ID_MISC3 0x0a /* HP98635A FP accelerator */ | |
186 | #define DIO_DESC_MISC3 "HP98635A FP accelerator" | |
187 | #define DIO_ID_MISC4 0x0b /* timer */ | |
188 | #define DIO_DESC_MISC4 "timer" | |
189 | #define DIO_ID_MISC5 0x12 /* 98640A */ | |
190 | #define DIO_DESC_MISC5 "98640A" | |
191 | #define DIO_ID_MISC6 0x16 /* 98659A */ | |
192 | #define DIO_DESC_MISC6 "98659A" | |
193 | #define DIO_ID_MISC7 0x19 /* 237 display */ | |
194 | #define DIO_DESC_MISC7 "237 display" | |
195 | #define DIO_ID_MISC8 0x1a /* quad-wide card */ | |
196 | #define DIO_DESC_MISC8 "quad-wide card" | |
197 | #define DIO_ID_MISC9 0x1b /* 98253A */ | |
198 | #define DIO_DESC_MISC9 "98253A" | |
199 | #define DIO_ID_MISC10 0x1c /* 98627A */ | |
200 | #define DIO_DESC_MISC10 "98253A" | |
201 | #define DIO_ID_MISC11 0x1d /* 98633A */ | |
202 | #define DIO_DESC_MISC11 "98633A" | |
203 | #define DIO_ID_MISC12 0x1e /* 98259A */ | |
204 | #define DIO_DESC_MISC12 "98259A" | |
205 | #define DIO_ID_MISC13 0x1f /* 8741 */ | |
206 | #define DIO_DESC_MISC13 "8741" | |
207 | #define DIO_ID_VME 0x31 /* 98577A VME adapter */ | |
208 | #define DIO_DESC_VME "98577A VME adapter" | |
209 | #define DIO_ID_DCL 0x34 /* 98628A serial */ | |
210 | #define DIO_DESC_DCL "98628A DCL serial" | |
211 | #define DIO_ID_DCLREM 0xb4 /* 98628A serial */ | |
212 | #define DIO_DESC_DCLREM "98628A DCLREM serial" | |
213 | /* These are the secondary IDs for the framebuffers */ | |
214 | #define DIO_ID2_GATORBOX 0x01 /* 98700/98710 "gatorbox" */ | |
215 | #define DIO_DESC2_GATORBOX "98700/98710 \"gatorbox\" display" | |
216 | #define DIO_ID2_TOPCAT 0x02 /* 98544/98545/98547 "topcat" */ | |
217 | #define DIO_DESC2_TOPCAT "98544/98545/98547 \"topcat\" display" | |
218 | #define DIO_ID2_RENAISSANCE 0x04 /* 98720/98721 "renaissance" */ | |
219 | #define DIO_DESC2_RENAISSANCE "98720/98721 \"renaissance\" display" | |
220 | #define DIO_ID2_LRCATSEYE 0x05 /* lowres "catseye" */ | |
221 | #define DIO_DESC2_LRCATSEYE "low-res catseye display" | |
222 | #define DIO_ID2_HRCCATSEYE 0x06 /* highres colour "catseye" */ | |
223 | #define DIO_DESC2_HRCCATSEYE "high-res color catseye display" | |
224 | #define DIO_ID2_HRMCATSEYE 0x07 /* highres mono "catseye" */ | |
225 | #define DIO_DESC2_HRMCATSEYE "high-res mono catseye display" | |
226 | #define DIO_ID2_DAVINCI 0x08 /* 98730/98731 "davinci" */ | |
227 | #define DIO_DESC2_DAVINCI "98730/98731 \"davinci\" display" | |
228 | #define DIO_ID2_XXXCATSEYE 0x09 /* "catseye" */ | |
229 | #define DIO_DESC2_XXXCATSEYE "catseye display" | |
230 | #define DIO_ID2_HYPERION 0x0e /* A1096A "hyperion" */ | |
231 | #define DIO_DESC2_HYPERION "A1096A \"hyperion\" display" | |
232 | #define DIO_ID2_XGENESIS 0x0b /* "x-genesis"; no NetBSD support */ | |
233 | #define DIO_DESC2_XGENESIS "\"x-genesis\" display" | |
234 | #define DIO_ID2_TIGER 0x0c /* "tiger"; no NetBSD support */ | |
235 | #define DIO_DESC2_TIGER "\"tiger\" display" | |
236 | #define DIO_ID2_YGENESIS 0x0d /* "y-genesis"; no NetBSD support */ | |
237 | #define DIO_DESC2_YGENESIS "\"y-genesis\" display" | |
238 | /* if you add new IDs then you should tell dio.c about them so it can | |
239 | * identify them... | |
240 | */ | |
241 | ||
242 | extern int dio_find(int deviceid); | |
243 | extern unsigned long dio_scodetophysaddr(int scode); | |
2e4c77be | 244 | extern int dio_create_sysfs_dev_files(struct dio_dev *); |
1da177e4 LT |
245 | |
246 | /* New-style probing */ | |
247 | extern int dio_register_driver(struct dio_driver *); | |
248 | extern void dio_unregister_driver(struct dio_driver *); | |
249 | extern const struct dio_device_id *dio_match_device(const struct dio_device_id *ids, const struct dio_dev *z); | |
250 | static inline struct dio_driver *dio_dev_driver(const struct dio_dev *d) | |
251 | { | |
252 | return d->driver; | |
253 | } | |
254 | ||
255 | #define dio_resource_start(d) ((d)->resource.start) | |
256 | #define dio_resource_end(d) ((d)->resource.end) | |
257 | #define dio_resource_len(d) ((d)->resource.end-(d)->resource.start+1) | |
258 | #define dio_resource_flags(d) ((d)->resource.flags) | |
259 | ||
260 | #define dio_request_device(d, name) \ | |
261 | request_mem_region(dio_resource_start(d), dio_resource_len(d), name) | |
262 | #define dio_release_device(d) \ | |
263 | release_mem_region(dio_resource_start(d), dio_resource_len(d)) | |
264 | ||
265 | /* Similar to the helpers above, these manipulate per-dio_dev | |
266 | * driver-specific data. They are really just a wrapper around | |
267 | * the generic device structure functions of these calls. | |
268 | */ | |
269 | static inline void *dio_get_drvdata (struct dio_dev *d) | |
270 | { | |
271 | return dev_get_drvdata(&d->dev); | |
272 | } | |
273 | ||
274 | static inline void dio_set_drvdata (struct dio_dev *d, void *data) | |
275 | { | |
276 | dev_set_drvdata(&d->dev, data); | |
277 | } | |
278 | ||
1da177e4 LT |
279 | #endif /* __KERNEL__ */ |
280 | #endif /* ndef _LINUX_DIO_H */ |