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 $Hdr: grf_rb.c 1.10 89/04/11$ 13 * 14 * @(#)grf_rb.c 7.1 (Berkeley) 05/08/90 15 */ 16 17 #include "grf.h" 18 #if NGRF > 0 19 20 /* 21 * Graphics routines for the Renaissance, HP98720 Graphics system. 22 */ 23 #include "param.h" 24 #include "errno.h" 25 26 #include "grfioctl.h" 27 #include "grfvar.h" 28 #include "grf_rbreg.h" 29 30 #include "machine/cpu.h" 31 32 #ifdef notyet 33 static short rb_microcode[] = { 34 0x5efe, 0x8a38, 0x0000, 0x0000, 0x0f00, 0, 0, 0, 35 0x3efe, 0x8a38, 0x0000, 0x7003, 0xf706, 0, 0, 0, 36 0x1efe, 0x8a38, 0x0000, 0x0000, 0x0000, 0, 0, 0, 37 0x3efe, 0x8a38, 0x0000, 0x7003, 0xfc06, 0, 0, 0, 38 0x1efe, 0x8a38, 0x0000, 0x0000, 0x0000, 0, 0, 0, 39 0x3efe, 0x8a38, 0x0004, 0x40f7, 0xa006, 0, 0, 0, 40 0x9efe, 0x8a38, 0x0000, 0x0000, 0x0000, 0, 0, 0, 41 0x1efe, 0x8a38, 0x0000, 0x0000, 0x0000 42 }; 43 #endif 44 45 /* 46 * Initialize hardware. 47 * Must point g_display at a grfinfo structure describing the hardware. 48 * Returns 0 if hardware not present, non-zero ow. 49 */ 50 rb_init(gp, addr) 51 struct grf_softc *gp; 52 u_char *addr; 53 { 54 register struct rboxfb *rbp; 55 struct grfinfo *gi = &gp->g_display; 56 int fboff; 57 58 rbp = (struct rboxfb *) addr; 59 gi->gd_regaddr = (caddr_t) UNIOV(addr); 60 gi->gd_regsize = 0x20000; 61 gi->gd_fbwidth = (rbp->fbwmsb << 8) | rbp->fbwlsb; 62 gi->gd_fbheight = (rbp->fbhmsb << 8) | rbp->fbhlsb; 63 fboff = (rbp->fbomsb << 8) | rbp->fbolsb; 64 gi->gd_fbaddr = (caddr_t) (*(addr + fboff) << 16); 65 gi->gd_fbsize = gi->gd_fbwidth * gi->gd_fbheight; 66 gi->gd_dwidth = (rbp->dwmsb << 8) | rbp->dwlsb; 67 gi->gd_dheight = (rbp->dwmsb << 8) | rbp->dwlsb; 68 gi->gd_planes = 0; /* ?? */ 69 gi->gd_colors = 256; 70 return(1); 71 } 72 73 #ifdef notyet 74 /* 75 * Download the microcode to the rbox. 76 */ 77 rb_download_microcode(regbase) 78 caddr_t regbase; 79 { 80 register short *rb_microcode_ptr = rb_microcode; 81 register short *rb_cntlstore_ptr = (short *)((char *)regbase + 0xC000); 82 register int i; 83 84 /* 85 * Reset and halt transform engine 86 */ 87 *((char *)regbase + 0x8002) = 0x00a0; 88 *((char *)regbase + 0x8002) = 0x0020; 89 *((char *)regbase + 0x8002) = 0x0080; 90 91 /* 92 * Select the first bank of control store. 93 */ 94 *((char *)regbase + 0x8007) = 0x0; 95 96 /* 97 * Write the microcode into the control store address space. 98 */ 99 for (i = 0; i < sizeof(rb_microcode) / sizeof(rb_microcode[0]); i++) 100 *rb_cntlstore_ptr++ = *rb_microcode_ptr++; 101 102 /* 103 * Start microcode execution. 104 */ 105 *(short *)((char *)regbase + 0x8002) = 0x2000; 106 *(short *)((char *)regbase + 0x8002) = 0x0; 107 108 /* 109 * wait for renaissance to finish up. 110 */ 111 for (i = 0; i < 1000; i++) { 112 if (*((char *)regbase + 0x8012) < 0) 113 continue; 114 } 115 } 116 #endif 117 118 /* 119 * Change the mode of the display. 120 * Right now all we can do is grfon/grfoff. 121 * Return a UNIX error number or 0 for success. 122 */ 123 rb_mode(gp, cmd) 124 register struct grf_softc *gp; 125 { 126 register struct rboxfb *rbp; 127 int error = 0; 128 129 rbp = (struct rboxfb *) IOV(gp->g_display.gd_regaddr); 130 switch (cmd) { 131 /* 132 * The minimal register info here is from the Renaissance X driver. 133 */ 134 case GM_GRFON: 135 case GM_GRFOFF: 136 break; 137 case GM_GRFOVON: 138 rbp->write_enable = 0; 139 rbp->opwen = 0xF; 140 rbp->drive = 0x10; 141 break; 142 case GM_GRFOVOFF: 143 rbp->opwen = 0; 144 rbp->write_enable = 0xffffffff; 145 rbp->drive = 0x01; 146 break; 147 default: 148 error = EINVAL; 149 break; 150 } 151 return(error); 152 } 153 154 #endif 155