1 /* 2 * Copyright (c) 1988 University of Utah. 3 * Copyright (c) 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * the Systems Programming Group of the University of Utah Computer 8 * Science Department. 9 * 10 * %sccs.include.redist.c% 11 * 12 * from: Utah $Hdr: grf_dv.c 1.1 90/07/09$ 13 * 14 * @(#)grf_dv.c 7.3 (Berkeley) 12/16/90 15 */ 16 17 #include "grf.h" 18 #if NGRF > 0 19 20 /* 21 * Graphics routines for the DaVinci, HP98730/98731 Graphics system. 22 */ 23 #include "sys/param.h" 24 #include "sys/errno.h" 25 26 #include "grfioctl.h" 27 #include "grfvar.h" 28 #include "grf_dvreg.h" 29 30 #include "../include/cpu.h" 31 32 /* 33 * Initialize hardware. 34 * Must point g_display at a grfinfo structure describing the hardware. 35 * Returns 0 if hardware not present, non-zero ow. 36 */ 37 dv_init(gp, addr) 38 struct grf_softc *gp; 39 u_char *addr; 40 { 41 register struct dvboxfb *dbp; 42 struct grfinfo *gi = &gp->g_display; 43 int fboff; 44 45 dbp = (struct dvboxfb *) addr; 46 gi->gd_regaddr = (caddr_t) UNIOV(addr); 47 gi->gd_regsize = 0x20000; 48 gi->gd_fbwidth = (dbp->fbwmsb << 8) | dbp->fbwlsb; 49 gi->gd_fbheight = (dbp->fbhmsb << 8) | dbp->fbhlsb; 50 fboff = (dbp->fbomsb << 8) | dbp->fbolsb; 51 gi->gd_fbaddr = (caddr_t) (*(addr + fboff) << 16); 52 gi->gd_fbsize = gi->gd_fbwidth * gi->gd_fbheight; 53 gi->gd_dwidth = (dbp->dwmsb << 8) | dbp->dwlsb; 54 gi->gd_dheight = (dbp->dwmsb << 8) | dbp->dwlsb; 55 gi->gd_planes = 0; /* ?? */ 56 gi->gd_colors = 256; 57 58 dv_reset(dbp); 59 return(1); 60 } 61 62 /* 63 * Magic code herein. 64 */ 65 dv_reset(dbp) 66 register struct dvboxfb *dbp; 67 { 68 dbp->reset = 0x80; 69 DELAY(100); 70 71 dbp->interrupt = 0x04; 72 dbp->en_scan = 0x01; 73 dbp->fbwen = ~0; 74 dbp->opwen = ~0; 75 dbp->fold = 0x01; 76 dbp->drive = 0x01; 77 dbp->rep_rule = 0x33; 78 dbp->alt_rr = 0x33; 79 dbp->zrr = 0x33; 80 81 dbp->fbvenp = 0xFF; 82 dbp->dispen = 0x01; 83 dbp->fbvens = 0x0; 84 dbp->fv_trig = 0x01; 85 DELAY(100); 86 dbp->vdrive = 0x0; 87 dbp->zconfig = 0x0; 88 89 while (dbp->wbusy & 0x01) 90 DELAY(100); 91 92 dbp->cmapbank = 0; 93 94 dbp->red0 = 0; 95 dbp->red1 = 0; 96 dbp->green0 = 0; 97 dbp->green1 = 0; 98 dbp->blue0 = 0; 99 dbp->blue1 = 0; 100 101 dbp->panxh = 0; 102 dbp->panxl = 0; 103 dbp->panyh = 0; 104 dbp->panyl = 0; 105 dbp->zoom = 0; 106 dbp->cdwidth = 0x50; 107 dbp->chstart = 0x52; 108 dbp->cvwidth = 0x22; 109 dbp->pz_trig = 1; 110 } 111 112 /* 113 * Change the mode of the display. 114 * Right now all we can do is grfon/grfoff. 115 * Return a UNIX error number or 0 for success. 116 */ 117 dv_mode(gp, cmd) 118 register struct grf_softc *gp; 119 { 120 register struct dvboxfb *dbp; 121 int error = 0; 122 123 dbp = (struct dvboxfb *) IOV(gp->g_display.gd_regaddr); 124 switch (cmd) { 125 case GM_GRFON: 126 dbp->dispen = 0x01; 127 break; 128 case GM_GRFOFF: 129 break; 130 case GM_GRFOVON: 131 dbp->opwen = 0xF; 132 dbp->drive = 0x10; 133 break; 134 case GM_GRFOVOFF: 135 dbp->opwen = 0; 136 dbp->drive = 0x01; 137 break; 138 default: 139 error = EINVAL; 140 break; 141 } 142 return(error); 143 } 144 145 #endif 146