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 *
7 * The board IDs are from the NetBSD kernel, which for once provided
8 * helpful comments...
9 *
10 * This goes with arch/m68k/hp300/dio.c
11 */
12
13 #ifndef _LINUX_DIO_H
14 #define _LINUX_DIO_H
15
16 /* The DIO boards in a system are distinguished by 'select codes' which
17 * range from 0-63 (DIO) and 132-255 (DIO-II).
18 * The DIO board with select code sc is located at physical address
19 * 0x600000 + sc * 0x10000
20 * So DIO cards cover [0x600000-0x800000); the areas [0x200000-0x400000) and
21 * [0x800000-0x1000000) are for additional space required by things
22 * like framebuffers. [0x400000-0x600000) is for miscellaneous internal I/O.
23 * On Linux, this is currently all mapped into the virtual address space
24 * at 0xf0000000 on bootup.
25 * DIO-II boards are at 0x1000000 + (sc - 132) * 0x400000
26 * which is address range [0x1000000-0x20000000) -- too big to map completely,
27 * so currently we just don't handle DIO-II boards. It wouldn't be hard to
28 * do with ioremap() though.
29 */
30 #ifdef __KERNEL__
31 /* DIO/DIO-II boards all have the following 8bit registers.
32 * These are offsets from the base of the device.
33 */
34 #define DIO_IDOFF 0x01 /* primary device ID */
35 #define DIO_IPLOFF 0x03 /* interrupt priority level */
36 #define DIO_SECIDOFF 0x15 /* secondary device ID */
37 #define DIOII_SIZEOFF 0x101 /* device size, DIO-II only */
38
39 /* The internal HPIB device is special; this is its physaddr; its select code is 7.
40 * The reason why we have to treat it specially is because apparently it's broken:
41 * the device ID isn't consistent/reliable. *sigh*
42 */
43 #define DIO_IHPIBADDR 0x47800
44 #define DIO_IHPIBSCODE 7
45
46 /* If we don't have the internal HPIB defined, then treat select code 7 like
47 * any other. If we *do* have internal HPIB, then we just have to assume that
48 * select code 7 is the internal HPIB regardless of the ID register :-<
49 */
50 #define CONFIG_IHPIB /* hack hack : not yet a proper config option */
51 #ifdef CONFIG_IHPIB
52 #define DIO_ISIHPIB(scode) ((scode) == DIO_IHPIBSCODE)
53 #else
54 #define DIO_ISIHPIB(scode) 0
55 #endif
56
57 #define DIO_VIRADDRBASE 0xf0000000 /* vir addr where IOspace is mapped */
58
59 #define DIO_BASE 0x600000 /* start of DIO space */
60 #define DIO_END 0x1000000 /* end of DIO space */
61 #define DIO_DEVSIZE 0x10000 /* size of a DIO device */
62
63 #define DIOII_BASE 0x01000000 /* start of DIO-II space */
64 #define DIOII_END 0x20000000 /* end of DIO-II space */
65 #define DIOII_DEVSIZE 0x00400000 /* size of a DIO-II device */
66
67 /* Highest valid select code. If we add DIO-II support this should become
68 * 256 for everything except HP320, which only has DIO.
69 */
70 #define DIO_SCMAX 32
71 #define DIOII_SCBASE 132 /* lowest DIO-II select code */
72 #define DIO_SCINHOLE(scode) (((scode) >= 32) && ((scode) < DIOII_SCBASE))
73
74 /* macros to read device IDs, given base address */
75 #define DIO_ID(baseaddr) readb((baseaddr) + DIO_IDOFF)
76 #define DIO_SECID(baseaddr) readb((baseaddr) + DIO_SECIDOFF)
77
78 /* extract the interrupt level */
79 #define DIO_IPL(baseaddr) (((readb((baseaddr) + DIO_IPLOFF) >> 4) & 0x03) + 3)
80
81 /* find the size of a DIO-II board's address space.
82 * DIO boards are all fixed length.
83 */
84 #define DIOII_SIZE(baseaddr) ((readb((baseaddr) + DIOII_SIZEOFF) + 1) * 0x100000)
85
86 /* general purpose macro for both DIO and DIO-II */
87 #define DIO_SIZE(scode, base) (DIO_ISDIOII((scode)) ? DIOII_SIZE((base)) : DIO_DEVSIZE)
88
89 /* The hardware has primary and secondary IDs; we encode these in a single
90 * int as PRIMARY ID & (SECONDARY ID << 8).
91 * In practice this is only important for framebuffers,
92 * and everybody else just sets ID fields equal to the DIO_ID_FOO value.
93 */
94 #define DIO_ENCODE_ID(pr,sec) ((((int)sec & 0xff) << 8) & ((int)pr & 0xff))
95 /* macro to determine whether a given primary ID requires a secondary ID byte */
96 #define DIO_NEEDSSECID(id) ((id) == DIO_ID_FBUFFER)
97
98 /* Now a whole slew of macros giving device IDs and descriptive strings: */
99 #define DIO_ID_DCA0 0x02 /* 98644A serial */
100 #define DIO_DESC_DCA0 "98644A DCA0 serial"
101 #define DIO_ID_DCA0REM 0x82 /* 98644A serial */
102 #define DIO_DESC_DCA0REM "98644A DCA0REM serial"
103 #define DIO_ID_DCA1 0x42 /* 98644A serial */
104 #define DIO_DESC_DCA1 "98644A DCA1 serial"
105 #define DIO_ID_DCA1REM 0xc2 /* 98644A serial */
106 #define DIO_DESC_DCA1REM "98644A DCA1REM serial"
107 #define DIO_ID_DCM 0x05 /* 98642A serial MUX */
108 #define DIO_DESC_DCM "98642A DCM serial MUX"
109 #define DIO_ID_DCMREM 0x85 /* 98642A serial MUX */
110 #define DIO_DESC_DCMREM "98642A DCMREM serial MUX"
111 #define DIO_ID_LAN 0x15 /* 98643A LAN */
112 #define DIO_DESC_LAN "98643A LAN"
113 #define DIO_ID_FHPIB 0x08 /* 98625A/98625B fast HP-IB */
114 #define DIO_DESC_FHPIB "98625A/98625B fast HPIB"
115 #define DIO_ID_NHPIB 0x80 /* 98624A HP-IB (normal ie slow) */
116 #define DIO_DESC_NHPIB "98624A HPIB"
117 #define DIO_ID_IHPIB 0x00 /* internal HPIB (not its real ID, it hasn't got one! */
118 #define DIO_DESC_IHPIB "internal HPIB"
119 #define DIO_ID_SCSI0 0x07 /* 98625A SCSI */
120 #define DIO_DESC_SCSI0 "98625A SCSI0"
121 #define DIO_ID_SCSI1 0x27 /* ditto */
122 #define DIO_DESC_SCSI1 "98625A SCSI1"
123 #define DIO_ID_SCSI2 0x47 /* ditto */
124 #define DIO_DESC_SCSI2 "98625A SCSI2"
125 #define DIO_ID_SCSI3 0x67 /* ditto */
126 #define DIO_DESC_SCSI3 "98625A SCSI3"
127 #define DIO_ID_FBUFFER 0x39 /* framebuffer: flavour is distinguished by secondary ID */
128 #define DIO_DESC_FBUFFER "bitmapped display"
129 /* the NetBSD kernel source is a bit unsure as to what these next IDs actually do :-> */
130 #define DIO_ID_MISC0 0x03 /* 98622A */
131 #define DIO_DESC_MISC0 "98622A"
132 #define DIO_ID_MISC1 0x04 /* 98623A */
133 #define DIO_DESC_MISC1 "98623A"
134 #define DIO_ID_PARALLEL 0x06 /* internal parallel */
135 #define DIO_DESC_PARALLEL "internal parallel"
136 #define DIO_ID_MISC2 0x09 /* 98287A keyboard */
137 #define DIO_DESC_MISC2 "98287A keyboard"
138 #define DIO_ID_MISC3 0x0a /* HP98635A FP accelerator */
139 #define DIO_DESC_MISC3 "HP98635A FP accelerator"
140 #define DIO_ID_MISC4 0x0b /* timer */
141 #define DIO_DESC_MISC4 "timer"
142 #define DIO_ID_MISC5 0x12 /* 98640A */
143 #define DIO_DESC_MISC5 "98640A"
144 #define DIO_ID_MISC6 0x16 /* 98659A */
145 #define DIO_DESC_MISC6 "98659A"
146 #define DIO_ID_MISC7 0x19 /* 237 display */
147 #define DIO_DESC_MISC7 "237 display"
148 #define DIO_ID_MISC8 0x1a /* quad-wide card */
149 #define DIO_DESC_MISC8 "quad-wide card"
150 #define DIO_ID_MISC9 0x1b /* 98253A */
151 #define DIO_DESC_MISC9 "98253A"
152 #define DIO_ID_MISC10 0x1c /* 98627A */
153 #define DIO_DESC_MISC10 "98253A"
154 #define DIO_ID_MISC11 0x1d /* 98633A */
155 #define DIO_DESC_MISC11 "98633A"
156 #define DIO_ID_MISC12 0x1e /* 98259A */
157 #define DIO_DESC_MISC12 "98259A"
158 #define DIO_ID_MISC13 0x1f /* 8741 */
159 #define DIO_DESC_MISC13 "8741"
160 #define DIO_ID_VME 0x31 /* 98577A VME adapter */
161 #define DIO_DESC_VME "98577A VME adapter"
162 #define DIO_ID_DCL 0x34 /* 98628A serial */
163 #define DIO_DESC_DCL "98628A DCL serial"
164 #define DIO_ID_DCLREM 0xb4 /* 98628A serial */
165 #define DIO_DESC_DCLREM "98628A DCLREM serial"
166 /* These are the secondary IDs for the framebuffers */
167 #define DIO_ID2_GATORBOX 0x01 /* 98700/98710 "gatorbox" */
168 #define DIO_DESC2_GATORBOX "98700/98710 \"gatorbox\" display"
169 #define DIO_ID2_TOPCAT 0x02 /* 98544/98545/98547 "topcat" */
170 #define DIO_DESC2_TOPCAT "98544/98545/98547 \"topcat\" display"
171 #define DIO_ID2_RENAISSANCE 0x04 /* 98720/98721 "renaissance" */
172 #define DIO_DESC2_RENAISSANCE "98720/98721 \"renaissance\" display"
173 #define DIO_ID2_LRCATSEYE 0x05 /* lowres "catseye" */
174 #define DIO_DESC2_LRCATSEYE "low-res catseye display"
175 #define DIO_ID2_HRCCATSEYE 0x06 /* highres colour "catseye" */
176 #define DIO_DESC2_HRCCATSEYE "high-res color catseye display"
177 #define DIO_ID2_HRMCATSEYE 0x07 /* highres mono "catseye" */
178 #define DIO_DESC2_HRMCATSEYE "high-res mono catseye display"
179 #define DIO_ID2_DAVINCI 0x08 /* 98730/98731 "davinci" */
180 #define DIO_DESC2_DAVINCI "98730/98731 \"davinci\" display"
181 #define DIO_ID2_XXXCATSEYE 0x09 /* "catseye" */
182 #define DIO_DESC2_XXXCATSEYE "catseye display"
183 #define DIO_ID2_HYPERION 0x0e /* A1096A "hyperion" */
184 #define DIO_DESC2_HYPERION "A1096A \"hyperion\" display"
185 #define DIO_ID2_XGENESIS 0x0b /* "x-genesis"; no NetBSD support */
186 #define DIO_DESC2_XGENESIS "\"x-genesis\" display"
187 #define DIO_ID2_TIGER 0x0c /* "tiger"; no NetBSD support */
188 #define DIO_DESC2_TIGER "\"tiger\" display"
189 #define DIO_ID2_YGENESIS 0x0d /* "y-genesis"; no NetBSD support */
190 #define DIO_DESC2_YGENESIS "\"y-genesis\" display"
191 /* if you add new IDs then you should tell dio.c about them so it can
192 * identify them...
193 */
194
195 extern void dio_init(void);
196 extern int dio_find(int deviceid);
197 extern void *dio_scodetoviraddr(int scode);
198 extern int dio_scodetoipl(int scode);
199 extern void dio_config_board(int scode);
200 extern void dio_unconfig_board(int scode);
201
202
203 #endif /* __KERNEL__ */
204 #endif /* ndef _LINUX_DIO_H */
205
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