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 8.4 (Berkeley) 01/12/94 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 int cmd; 89 caddr_t data; 90 { 91 register struct rboxfb *rbp; 92 int error = 0; 93 94 rbp = (struct rboxfb *) gp->g_regkva; 95 switch (cmd) { 96 /* 97 * The minimal register info here is from the Renaissance X driver. 98 */ 99 case GM_GRFON: 100 case GM_GRFOFF: 101 break; 102 103 case GM_GRFOVON: 104 rbp->write_enable = 0; 105 rbp->opwen = 0xF; 106 rbp->drive = 0x10; 107 break; 108 109 case GM_GRFOVOFF: 110 rbp->opwen = 0; 111 rbp->write_enable = 0xffffffff; 112 rbp->drive = 0x01; 113 break; 114 115 /* 116 * Remember UVA of mapping for GCDESCRIBE. 117 * XXX this should be per-process. 118 */ 119 case GM_MAP: 120 gp->g_data = data; 121 break; 122 123 case GM_UNMAP: 124 gp->g_data = 0; 125 break; 126 127 #ifdef HPUXCOMPAT 128 case GM_DESCRIBE: 129 { 130 struct grf_fbinfo *fi = (struct grf_fbinfo *)data; 131 struct grfinfo *gi = &gp->g_display; 132 int i; 133 134 /* feed it what HP-UX expects */ 135 fi->id = gi->gd_id; 136 fi->mapsize = gi->gd_fbsize; 137 fi->dwidth = gi->gd_dwidth; 138 fi->dlength = gi->gd_dheight; 139 fi->width = gi->gd_fbwidth; 140 fi->length = gi->gd_fbheight; 141 fi->bpp = NBBY; 142 fi->xlen = (fi->width * fi->bpp) / NBBY; 143 fi->npl = gi->gd_planes; 144 fi->bppu = fi->npl; 145 fi->nplbytes = fi->xlen * ((fi->length * fi->bpp) / NBBY); 146 bcopy("HP98720", fi->name, 8); 147 fi->attr = 2; /* HW block mover */ 148 /* 149 * If mapped, return the UVA where mapped. 150 */ 151 if (gp->g_data) { 152 fi->regbase = gp->g_data; 153 fi->fbbase = fi->regbase + gp->g_display.gd_regsize; 154 } else { 155 fi->fbbase = 0; 156 fi->regbase = 0; 157 } 158 for (i = 0; i < 6; i++) 159 fi->regions[i] = 0; 160 break; 161 } 162 #endif 163 164 default: 165 error = EINVAL; 166 break; 167 } 168 return(error); 169 } 170 171 #endif 172