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) in_8((baseaddr) + DIO_IDOFF) 76 #define DIO_SECID(baseaddr) in_8((baseaddr) + DIO_SECIDOFF) 77 78 /* extract the interrupt level */ 79 #define DIO_IPL(baseaddr) (((in_8((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) ((in_8((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 LANCE ethernet" 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 const char *dio_scodetoname(int scode); 200 extern void dio_config_board(int scode); 201 extern void dio_unconfig_board(int scode); 202 203 204 #endif /* __KERNEL__ */ 205 #endif /* ndef _LINUX_DIO_H */ 206