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 $Hdr: grf_rb.c 1.15 93/08/13$ 13 * 14 * @(#)grf_rb.c 8.2 (Berkeley) 09/09/93 15 */ 16 17 #include "grf.h" 18 #if NGRF > 0 19 20 /* 21 * Graphics routines for the Renaissance, HP98720 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_rbreg.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 rb_init(gp, addr) 38 struct grf_softc *gp; 39 caddr_t addr; 40 { 41 register struct rboxfb *rbp; 42 struct grfinfo *gi = &gp->g_display; 43 int fboff; 44 extern caddr_t sctopa(), iomap(); 45 46 rbp = (struct rboxfb *) 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 = (rbp->fbwmsb << 8) | rbp->fbwlsb; 53 gi->gd_fbheight = (rbp->fbhmsb << 8) | rbp->fbhlsb; 54 gi->gd_fbsize = gi->gd_fbwidth * gi->gd_fbheight; 55 fboff = (rbp->fbomsb << 8) | rbp->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 = (rbp->dwmsb << 8) | rbp->dwlsb; 75 gi->gd_dheight = (rbp->dwmsb << 8) | rbp->dwlsb; 76 gi->gd_planes = 0; /* ?? */ 77 gi->gd_colors = 256; 78 return(1); 79 } 80 81 /* 82 * Change the mode of the display. 83 * Right now all we can do is grfon/grfoff. 84 * Return a UNIX error number or 0 for success. 85 */ 86 rb_mode(gp, cmd, data) 87 register struct grf_softc *gp; 88 caddr_t data; 89 { 90 register struct rboxfb *rbp; 91 int error = 0; 92 93 rbp = (struct rboxfb *) gp->g_regkva; 94 switch (cmd) { 95 /* 96 * The minimal register info here is from the Renaissance X driver. 97 */ 98 case GM_GRFON: 99 case GM_GRFOFF: 100 break; 101 102 case GM_GRFOVON: 103 rbp->write_enable = 0; 104 rbp->opwen = 0xF; 105 rbp->drive = 0x10; 106 break; 107 108 case GM_GRFOVOFF: 109 rbp->opwen = 0; 110 rbp->write_enable = 0xffffffff; 111 rbp->drive = 0x01; 112 break; 113 114 /* 115 * Remember UVA of mapping for GCDESCRIBE. 116 * XXX this should be per-process. 117 */ 118 case GM_MAP: 119 gp->g_data = data; 120 break; 121 122 case GM_UNMAP: 123 gp->g_data = 0; 124 break; 125 126 #ifdef HPUXCOMPAT 127 case GM_DESCRIBE: 128 { 129 struct grf_fbinfo *fi = (struct grf_fbinfo *)data; 130 struct grfinfo *gi = &gp->g_display; 131 int i, j; 132 133 /* feed it what HP-UX expects */ 134 fi->id = gi->gd_id; 135 fi->mapsize = gi->gd_fbsize; 136 fi->dwidth = gi->gd_dwidth; 137 fi->dlength = gi->gd_dheight; 138 fi->width = gi->gd_fbwidth; 139 fi->length = gi->gd_fbheight; 140 fi->bpp = NBBY; 141 fi->xlen = (fi->width * fi->bpp) / NBBY; 142 fi->npl = gi->gd_planes; 143 fi->bppu = fi->npl; 144 fi->nplbytes = fi->xlen * ((fi->length * fi->bpp) / NBBY); 145 bcopy("HP98720", fi->name, 8); 146 fi->attr = 2; /* HW block mover */ 147 /* 148 * If mapped, return the UVA where mapped. 149 */ 150 if (gp->g_data) { 151 fi->regbase = gp->g_data; 152 fi->fbbase = fi->regbase + gp->g_display.gd_regsize; 153 } else { 154 fi->fbbase = 0; 155 fi->regbase = 0; 156 } 157 for (i = 0; i < 6; i++) 158 fi->regions[i] = 0; 159 break; 160 } 161 #endif 162 163 default: 164 error = EINVAL; 165 break; 166 } 167 return(error); 168 } 169 170 #endif 171