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 $Hdr: grf_tc.c 1.20 93/08/13$ 13 * 14 * @(#)grf_tc.c 8.4 (Berkeley) 01/12/94 15 */ 16 17 #include "grf.h" 18 #if NGRF > 0 19 20 /* 21 * Graphics routines for TOPCAT and CATSEYE frame buffers 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 <hp/dev/grfreg.h> 29 #include <hp300/dev/grf_tcreg.h> 30 31 #include <machine/cpu.h> 32 33 /* 34 * Initialize hardware. 35 * Must fill in the grfinfo structure in g_softc. 36 * Returns 0 if hardware not present, non-zero ow. 37 */ 38 tc_init(gp, addr) 39 struct grf_softc *gp; 40 caddr_t addr; 41 { 42 register struct tcboxfb *tp = (struct tcboxfb *) addr; 43 struct grfinfo *gi = &gp->g_display; 44 volatile u_char *fbp; 45 u_char save; 46 int fboff; 47 extern caddr_t sctopa(), iomap(); 48 49 if (ISIIOVA(addr)) 50 gi->gd_regaddr = (caddr_t) IIOP(addr); 51 else 52 gi->gd_regaddr = sctopa(vatosc(addr)); 53 gi->gd_regsize = 0x10000; 54 gi->gd_fbwidth = (tp->fbwmsb << 8) | tp->fbwlsb; 55 gi->gd_fbheight = (tp->fbhmsb << 8) | tp->fbhlsb; 56 gi->gd_fbsize = gi->gd_fbwidth * gi->gd_fbheight; 57 fboff = (tp->fbomsb << 8) | tp->fbolsb; 58 gi->gd_fbaddr = (caddr_t) (*((u_char *)addr + fboff) << 16); 59 if (gi->gd_regaddr >= (caddr_t)DIOIIBASE) { 60 /* 61 * For DIO II space the fbaddr just computed is the offset 62 * from the select code base (regaddr) of the framebuffer. 63 * Hence it is also implicitly the size of the register set. 64 */ 65 gi->gd_regsize = (int) gi->gd_fbaddr; 66 gi->gd_fbaddr += (int) gi->gd_regaddr; 67 gp->g_regkva = addr; 68 gp->g_fbkva = addr + gi->gd_regsize; 69 } else { 70 /* 71 * For DIO space we need to map the seperate framebuffer. 72 */ 73 gp->g_regkva = addr; 74 gp->g_fbkva = iomap(gi->gd_fbaddr, gi->gd_fbsize); 75 } 76 gi->gd_dwidth = (tp->dwmsb << 8) | tp->dwlsb; 77 gi->gd_dheight = (tp->dhmsb << 8) | tp->dhlsb; 78 gi->gd_planes = tp->num_planes; 79 gi->gd_colors = 1 << gi->gd_planes; 80 if (gi->gd_colors == 1) { 81 fbp = (u_char *) gp->g_fbkva; 82 tp->wen = ~0; 83 tp->prr = 0x3; 84 tp->fben = ~0; 85 save = *fbp; 86 *fbp = 0xFF; 87 gi->gd_colors = *fbp + 1; 88 *fbp = save; 89 } 90 return(1); 91 } 92 93 /* 94 * Change the mode of the display. 95 * Right now all we can do is grfon/grfoff. 96 * Return a UNIX error number or 0 for success. 97 * Function may not be needed anymore. 98 */ 99 /*ARGSUSED*/ 100 tc_mode(gp, cmd, data) 101 struct grf_softc *gp; 102 int cmd; 103 caddr_t data; 104 { 105 int error = 0; 106 107 switch (cmd) { 108 case GM_GRFON: 109 case GM_GRFOFF: 110 break; 111 112 /* 113 * Remember UVA of mapping for GCDESCRIBE. 114 * XXX this should be per-process. 115 */ 116 case GM_MAP: 117 gp->g_data = data; 118 break; 119 120 case GM_UNMAP: 121 gp->g_data = 0; 122 break; 123 124 #ifdef HPUXCOMPAT 125 case GM_DESCRIBE: 126 { 127 struct grf_fbinfo *fi = (struct grf_fbinfo *)data; 128 struct grfinfo *gi = &gp->g_display; 129 int i; 130 131 /* feed it what HP-UX expects */ 132 fi->id = gi->gd_id; 133 fi->mapsize = gi->gd_fbsize; 134 fi->dwidth = gi->gd_dwidth; 135 fi->dlength = gi->gd_dheight; 136 fi->width = gi->gd_fbwidth; 137 fi->length = gi->gd_fbheight; 138 fi->bpp = NBBY; 139 fi->xlen = (fi->width * fi->bpp) / NBBY; 140 fi->npl = gi->gd_planes; 141 fi->bppu = fi->npl; 142 fi->nplbytes = fi->xlen * ((fi->length * fi->bpp) / NBBY); 143 /* XXX */ 144 switch (gp->g_sw->gd_hwid) { 145 case GID_HRCCATSEYE: 146 bcopy("HP98550", fi->name, 8); 147 break; 148 case GID_LRCATSEYE: 149 bcopy("HP98549", fi->name, 8); 150 break; 151 case GID_HRMCATSEYE: 152 bcopy("HP98548", fi->name, 8); 153 break; 154 case GID_TOPCAT: 155 switch (gi->gd_colors) { 156 case 64: 157 bcopy("HP98547", fi->name, 8); 158 break; 159 case 16: 160 bcopy("HP98545", fi->name, 8); 161 break; 162 case 2: 163 bcopy("HP98544", fi->name, 8); 164 break; 165 } 166 break; 167 } 168 fi->attr = 2; /* HW block mover */ 169 /* 170 * If mapped, return the UVA where mapped. 171 */ 172 if (gp->g_data) { 173 fi->regbase = gp->g_data; 174 fi->fbbase = fi->regbase + gp->g_display.gd_regsize; 175 } else { 176 fi->fbbase = 0; 177 fi->regbase = 0; 178 } 179 for (i = 0; i < 6; i++) 180 fi->regions[i] = 0; 181 break; 182 } 183 #endif 184 185 default: 186 error = EINVAL; 187 break; 188 } 189 return(error); 190 } 191 #endif 192