1 /* 2 * @(#)qd_data.c 1.16 (ULTRIX) 7/2/86 3 */ 4 5 /************************************************************************ 6 * * 7 * Copyright (c) 1985, 1986 by * 8 * Digital Equipment Corporation, Maynard, MA * 9 * All rights reserved. * 10 * * 11 * This software is furnished under a license and may be used and * 12 * copied only in accordance with the terms of such license and * 13 * with the inclusion of the above copyright notice. This * 14 * software or any other copies thereof may not be provided or * 15 * otherwise made available to any other person. No title to and * 16 * ownership of the software is hereby transferred. * 17 * * 18 * The information in this software is subject to change without * 19 * notice and should not be construed as a commitment by Digital * 20 * Equipment Corporation. * 21 * * 22 * Digital assumes no responsibility for the use or reliability * 23 * of its software on equipment which is not supplied by Digital. * 24 * * 25 ************************************************************************/ 26 27 /* 28 * qd_data.c 29 * 30 * Modification history 31 * 32 * QDSS data file 33 * 34 * 3-Jul-85 - longo 35 * 36 * Created file. 37 * 38 * 15-Jul-85 - longo 39 * 40 * Added "qdfont.h" include and moved "mouse_report" struct 41 * and definitions in from "qduser.h". 42 * 43 * 18-Aug-85 - longo 44 * 45 * Added "duart_imask" entry to qdflags for shadowing. 46 * 47 * 4-Sep-85 - longo 48 * 49 * Added storage "QBAreg[]" for DMA support. 50 * 51 * 11-Sep-85 - longo 52 * 53 * Added constant for event buffer size (now 1k). 54 * 55 * 17-Sep-85 - longo 56 * 57 * Changes for DMA support. 58 * 59 * 18-Sep-85 - longo 60 * 61 * Changes for scroll interrupt support. 62 * 63 * 2-Oct-85 - longo 64 * 65 * Added color map write buffer shared RAM stuff and adder 66 * interrupt enable register shadowing to qdflags. 67 * 68 * 4-Oct-85 - longo 69 * 70 * Added kernel loop back state flag to qdflags. 71 * 72 * 16-Oct-85 - longo 73 * 74 * Added "pntr_id" entry to qdflags struct. 75 * 76 * 22-Oct-85 - longo 77 * 78 * Added buf structures for use by driver strategy routines. 79 * 80 * 23-Oct-85 - longo 81 * 82 * Added "user_dma" entry to qdflag structure. 83 * 84 * 8-Nov-85 - longo 85 * 86 * Added "selmask" entry to qdflags structure. 87 * 88 * 11-Nov-85 - longo 89 * 90 * Changed "_vs_eventqueue" struct references to "qdinput". 91 * 92 * 25-Nov-85 - longo 93 * 94 * Added "one_only" lock switch for single process access. 95 * 96 * 18-Mar-86 - jaw 97 * 98 * Add routines to cpu switch for nexus/unibus addreses. 99 * Also got rid of some globals like nexnum. 100 * ka8800 cleanup. 101 * 102 * 19-Mar-86 - ricky palmer 103 * 104 * Added "devio.h" to include list. V2.0 105 * 106 * 02-Jul-86 - Brian Stevens 107 * 108 * Added cursor structure for each display 109 * 110 */ 111 112 #include "qd.h" /* # of QDSS's the system is configured for */ 113 114 #include "../vax/pte.h" /* page table values */ 115 #include "../vax/mtpr.h" /* VAX register access stuff */ 116 117 #include "../sys/param.h" /* general system params & macros */ 118 #include "../sys/conf.h" /* "linesw" tty driver dispatch */ 119 #include "../sys/user.h" /* user structure (what else?) */ 120 #include "qdioctl.h" /* ioctl call values */ 121 #include "../sys/tty.h" 122 #include "../sys/map.h" /* resource allocation map struct */ 123 #include "../sys/buf.h" /* buf structs */ 124 #include "../sys/vm.h" /* includes 'vm' header files */ 125 #include "../sys/clist.h" /* char list handling structs */ 126 #include "../sys/file.h" /* file I/O definitions */ 127 #include "../sys/uio.h" /* write/read call structs */ 128 #include "../sys/kernel.h" /* clock handling structs */ 129 #include "../vax/cpu.h" /* per cpu (pcpu) struct */ 130 131 #include "../vaxuba/ubareg.h" /* uba & 'qba' register structs */ 132 #include "../vaxuba/ubavar.h" /* uba structs & uba map externs */ 133 134 #include "qduser.h" /* definitions shared with my client */ 135 #include "qdreg.h" /* QDSS device register structures */ 136 137 /*----------------------------------------------------------- 138 * QDSS driver status flags for tracking operational state */ 139 140 struct qdflags { 141 142 u_int inuse; /* which minor dev's are in use now */ 143 u_int config; /* I/O page register content */ 144 u_int mapped; /* user mapping status word */ 145 u_int kernel_loop; /* if kernel console is redirected */ 146 u_int user_dma; /* DMA from user space in progress */ 147 u_short pntr_id; /* type code of pointing device */ 148 u_short duart_imask; /* shadowing for duart intrpt mask reg */ 149 u_short adder_ie; /* shadowing for adder intrpt enbl reg */ 150 u_short curs_acc; /* cursor acceleration factor */ 151 u_short curs_thr; /* cursor acceleration threshold level */ 152 u_short tab_res; /* tablet resolution factor */ 153 u_short selmask; /* mask for active qd select entries */ 154 }; 155 156 /* bit definitions for "inuse" entry */ 157 158 #define CONS_DEV 0x01 159 #define ALTCONS_DEV 0x02 160 #define GRAPHIC_DEV 0x04 161 162 /* bit definitions for 'mapped' member of flag structure */ 163 164 #define MAPDEV 0x01 /* hardware is mapped */ 165 #define MAPDMA 0x02 /* DMA buffer mapped */ 166 #define MAPEQ 0x04 /* event queue buffer mapped */ 167 #define MAPSCR 0x08 /* scroll param area mapped */ 168 #define MAPCOLOR 0x10 /* color map writing buffer mapped */ 169 170 /* bit definitions for 'selmask' member of qdflag structure */ 171 172 #define SEL_READ 0x01 /* read select is active */ 173 #define SEL_WRITE 0x02 /* write select is active */ 174 175 /*---------------------------------------------- 176 * constants used in shared memory operations */ 177 178 #define EVENT_BUFSIZE 1024 /* # of bytes per device's event buffer */ 179 180 #define MAXEVENTS ( (EVENT_BUFSIZE - sizeof(struct qdinput)) \ 181 / sizeof(struct _vs_event) ) 182 183 #define DMA_BUFSIZ (1024 * 3) 184 185 #define COLOR_BUFSIZ ((sizeof(struct color_buf) + 512) & ~0x01FF) 186 187 /*******************************************************************/ 188 189 #ifdef BINARY 190 191 extern struct uba_device *qdinfo[]; /* array of pntrs to each QDSS */ 192 /* uba structure */ 193 extern struct tty qd_tty[]; 194 195 extern struct qd_softc qd_softc[]; 196 197 /*---------------------------------------------------------- 198 * static storage used by multiple functions in this code */ 199 200 extern int Qbus_unmap[]; /* Qbus mapper release key */ 201 extern struct qdflags qdflags[]; /* QDSS device status flags */ 202 extern struct qdmap qdmap[]; /* QDSS register map structure */ 203 extern caddr_t qdbase[]; /* base address of each QDSS unit */ 204 extern struct buf qdbuf[]; /* buf structs used by strategy */ 205 extern char one_only[]; /* lock for single process access */ 206 207 /*----------------------------- 208 * shared memory allocation */ 209 210 extern char event_shared[]; /* reserve event buf space */ 211 extern struct qdinput *eq_header[]; /* event buf header ptrs */ 212 213 extern char DMA_shared[]; /* reserve DMA buf space */ 214 extern struct DMAreq_header *DMAheader[]; /* DMA buf header ptrs */ 215 216 extern char scroll_shared[]; /* reserve space for scroll structs */ 217 extern struct scroll *scroll[]; /* pointers to scroll structures */ 218 219 extern char color_shared[]; /* reserve space: color bufs */ 220 extern struct color_buf *color_buf[]; /* pointers to color bufs */ 221 222 /*-------------------------------- 223 * mouse input event structures */ 224 225 extern struct mouse_report last_rep[]; 226 extern struct mouse_report current_rep[]; 227 228 /*---------------------------- 229 * input event "select" use */ 230 231 extern struct proc *rsel[]; /* process waiting for select */ 232 233 extern int DMAbuf_size; 234 235 /*---------------------------- 236 * console cursor structure */ 237 238 struct _vs_cursor cursor[]; 239 240 241 /*********************************************************************/ 242 243 #else 244 245 /*-------------------------------------------------------------------------- 246 * reference to an array of "uba_device" structures built by the auto 247 * configuration program. The uba_device structure decribes the device 248 * sufficiently for the driver to talk to it. The auto configuration code 249 * fills in the uba_device structures (located in ioconf.c) from user 250 * maintained info. */ 251 252 struct uba_device *qdinfo[NQD]; /* array of pntrs to each QDSS's */ 253 /* uba structures */ 254 struct tty qd_tty[NQD*4]; /* teletype structures for each.. */ 255 /* ..possible minor device */ 256 257 struct qd_softc qd_softc[NQD]; 258 259 /*---------------------------------------------------------- 260 * static storage used by multiple functions in this code */ 261 262 int Qbus_unmap[NQD]; /* Qbus mapper release code */ 263 struct qdflags qdflags[NQD]; /* QDSS device status flags */ 264 struct qdmap qdmap[NQD]; /* QDSS register map structure */ 265 caddr_t qdbase[NQD]; /* base address of each QDSS unit */ 266 struct buf qdbuf[NQD]; /* buf structs used by strategy */ 267 char one_only[NQD]; /* lock for single process access */ 268 269 /*------------------------------------------------------------------------ 270 * the array "event_shared[]" is made up of a number of event queue buffers 271 * equal to the number of QDSS's configured into the running kernel (NQD). 272 * Each event queue buffer begins with an event queue header (struct qdinput) 273 * followed by a group of event queue entries (struct _vs_event). The array 274 * "*eq_header[]" is an array of pointers to the start of each event queue 275 * buffer in "event_shared[]". */ 276 277 #define EQSIZE ((EVENT_BUFSIZE * NQD) + 512) 278 279 char event_shared[EQSIZE]; /* reserve space for event bufs */ 280 struct qdinput *eq_header[NQD]; /* event queue header pntrs */ 281 282 /*-------------------------------------------------------------------------- 283 * This allocation method reserves enough memory pages for NQD shared DMA I/O 284 * buffers. Each buffer must consume an integral number of memory pages to 285 * guarantee that a following buffer will begin on a page boundary. Also, 286 * enough space is allocated so that the FIRST I/O buffer can start at the 287 * 1st page boundary after "&DMA_shared". Page boundaries are used so that 288 * memory protections can be turned on/off for individual buffers. */ 289 290 #define IOBUFSIZE ((DMA_BUFSIZ * NQD) + 512) 291 292 char DMA_shared[IOBUFSIZE]; /* reserve I/O buffer space */ 293 struct DMAreq_header *DMAheader[NQD]; /* DMA buffer header pntrs */ 294 295 /*------------------------------------------------------------------------- 296 * The driver assists a client in scroll operations by loading dragon 297 * registers from an interrupt service routine. The loading is done using 298 * parameters found in memory shrade between the driver and it's client. 299 * The scroll parameter structures are ALL loacted in the same memory page 300 * for reasons of memory economy. */ 301 302 char scroll_shared[2 * 512]; /* reserve space for scroll structs */ 303 struct scroll *scroll[NQD]; /* pointers to scroll structures */ 304 305 /*----------------------------------------------------------------------- 306 * the driver is programmable to provide the user with color map write 307 * services at VSYNC interrupt time. At interrupt time the driver loads 308 * the color map with any user-requested load data found in shared memory */ 309 310 #define COLOR_SHARED ((COLOR_BUFSIZ * NQD) + 512) 311 312 char color_shared[COLOR_SHARED]; /* reserve space: color bufs */ 313 struct color_buf *color_buf[NQD]; /* pointers to color bufs */ 314 315 /*-------------------------------- 316 * mouse input event structures */ 317 318 struct mouse_report last_rep[NQD]; 319 struct mouse_report current_rep[NQD]; 320 321 /*---------------------------- 322 * input event "select" use */ 323 324 struct proc *rsel[NQD]; /* process waiting for select */ 325 326 /*---------------------------- 327 * console cursor structure */ 328 329 struct _vs_cursor cursor[NQD]; 330 331 332 /************************************************************************/ 333 334 int nNQD = NQD; 335 336 int DMAbuf_size = DMA_BUFSIZ; 337 338 #endif 339 340 341