1 /* 2 * Copyright (c) 1988 University of Utah. 3 * Copyright (c) 1990, 1993 4 * The Regents of the University of California. 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 $Hdr: grf_dv.c 1.12 93/08/13$ 13 * 14 * @(#)grf_dv.c 8.4 (Berkeley) 01/12/94 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 <hp/dev/grfioctl.h> 27 #include <hp/dev/grfvar.h> 28 #include <hp300/dev/grf_dvreg.h> 29 30 #include <machine/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 caddr_t addr; 40 { 41 register struct dvboxfb *dbp; 42 struct grfinfo *gi = &gp->g_display; 43 int fboff; 44 extern caddr_t sctopa(), iomap(); 45 46 dbp = (struct dvboxfb *) addr; 47 if (ISIIOVA(addr)) 48 gi->gd_regaddr = (caddr_t) IIOP(addr); 49 else 50 gi->gd_regaddr = sctopa(vatosc(addr)); 51 gi->gd_regsize = 0x20000; 52 gi->gd_fbwidth = (dbp->fbwmsb << 8) | dbp->fbwlsb; 53 gi->gd_fbheight = (dbp->fbhmsb << 8) | dbp->fbhlsb; 54 gi->gd_fbsize = gi->gd_fbwidth * gi->gd_fbheight; 55 fboff = (dbp->fbomsb << 8) | dbp->fbolsb; 56 gi->gd_fbaddr = (caddr_t) (*((u_char *)addr + fboff) << 16); 57 if (gi->gd_regaddr >= (caddr_t)DIOIIBASE) { 58 /* 59 * For DIO II space the fbaddr just computed is the offset 60 * from the select code base (regaddr) of the framebuffer. 61 * Hence it is also implicitly the size of the register set. 62 */ 63 gi->gd_regsize = (int) gi->gd_fbaddr; 64 gi->gd_fbaddr += (int) gi->gd_regaddr; 65 gp->g_regkva = addr; 66 gp->g_fbkva = addr + gi->gd_regsize; 67 } else { 68 /* 69 * For DIO space we need to map the seperate framebuffer. 70 */ 71 gp->g_regkva = addr; 72 gp->g_fbkva = iomap(gi->gd_fbaddr, gi->gd_fbsize); 73 } 74 gi->gd_dwidth = (dbp->dwmsb << 8) | dbp->dwlsb; 75 gi->gd_dheight = (dbp->dwmsb << 8) | dbp->dwlsb; 76 gi->gd_planes = 0; /* ?? */ 77 gi->gd_colors = 256; 78 79 dv_reset(dbp); 80 return(1); 81 } 82 83 /* 84 * Magic code herein. 85 */ 86 dv_reset(dbp) 87 register struct dvboxfb *dbp; 88 { 89 dbp->reset = 0x80; 90 DELAY(100); 91 92 dbp->interrupt = 0x04; 93 dbp->en_scan = 0x01; 94 dbp->fbwen = ~0; 95 dbp->opwen = ~0; 96 dbp->fold = 0x01; 97 dbp->drive = 0x01; 98 dbp->rep_rule = 0x33; 99 dbp->alt_rr = 0x33; 100 dbp->zrr = 0x33; 101 102 dbp->fbvenp = 0xFF; 103 dbp->dispen = 0x01; 104 dbp->fbvens = 0x0; 105 dbp->fv_trig = 0x01; 106 DELAY(100); 107 dbp->vdrive = 0x0; 108 dbp->zconfig = 0x0; 109 110 while (dbp->wbusy & 0x01) 111 DELAY(100); 112 113 dbp->cmapbank = 0; 114 115 dbp->red0 = 0; 116 dbp->red1 = 0; 117 dbp->green0 = 0; 118 dbp->green1 = 0; 119 dbp->blue0 = 0; 120 dbp->blue1 = 0; 121 122 dbp->panxh = 0; 123 dbp->panxl = 0; 124 dbp->panyh = 0; 125 dbp->panyl = 0; 126 dbp->zoom = 0; 127 dbp->cdwidth = 0x50; 128 dbp->chstart = 0x52; 129 dbp->cvwidth = 0x22; 130 dbp->pz_trig = 1; 131 } 132 133 /* 134 * Change the mode of the display. 135 * Right now all we can do is grfon/grfoff. 136 * Return a UNIX error number or 0 for success. 137 */ 138 dv_mode(gp, cmd, data) 139 register struct grf_softc *gp; 140 int cmd; 141 caddr_t data; 142 { 143 register struct dvboxfb *dbp; 144 int error = 0; 145 146 dbp = (struct dvboxfb *) gp->g_regkva; 147 switch (cmd) { 148 case GM_GRFON: 149 dbp->dispen = 0x01; 150 break; 151 152 case GM_GRFOFF: 153 break; 154 155 case GM_GRFOVON: 156 dbp->opwen = 0xF; 157 dbp->drive = 0x10; 158 break; 159 160 case GM_GRFOVOFF: 161 dbp->opwen = 0; 162 dbp->drive = 0x01; 163 break; 164 165 /* 166 * Remember UVA of mapping for GCDESCRIBE. 167 * XXX this should be per-process. 168 */ 169 case GM_MAP: 170 gp->g_data = data; 171 break; 172 173 case GM_UNMAP: 174 gp->g_data = 0; 175 break; 176 177 #ifdef HPUXCOMPAT 178 case GM_DESCRIBE: 179 { 180 struct grf_fbinfo *fi = (struct grf_fbinfo *)data; 181 struct grfinfo *gi = &gp->g_display; 182 int i; 183 184 /* feed it what HP-UX expects */ 185 fi->id = gi->gd_id; 186 fi->mapsize = gi->gd_fbsize; 187 fi->dwidth = gi->gd_dwidth; 188 fi->dlength = gi->gd_dheight; 189 fi->width = gi->gd_fbwidth; 190 fi->length = gi->gd_fbheight; 191 fi->bpp = NBBY; 192 fi->xlen = (fi->width * fi->bpp) / NBBY; 193 fi->npl = gi->gd_planes; 194 fi->bppu = fi->npl; 195 fi->nplbytes = fi->xlen * ((fi->length * fi->bpp) / NBBY); 196 bcopy("HP98730", fi->name, 8); 197 fi->attr = 2; /* HW block mover */ 198 /* 199 * If mapped, return the UVA where mapped. 200 */ 201 if (gp->g_data) { 202 fi->regbase = gp->g_data; 203 fi->fbbase = fi->regbase + gp->g_display.gd_regsize; 204 } else { 205 fi->fbbase = 0; 206 fi->regbase = 0; 207 } 208 for (i = 0; i < 6; i++) 209 fi->regions[i] = 0; 210 break; 211 } 212 #endif 213 214 default: 215 error = EINVAL; 216 break; 217 } 218 return(error); 219 } 220 221 #endif 222