1 /* $NetBSD: pci_vga.c,v 1.1 1999/03/15 15:47:22 leo Exp $ */ 2 3 /* 4 * Copyright (c) 1999 Leo Weppelman. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Leo Weppelman. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 #include <sys/param.h> 32 #include <sys/queue.h> 33 #include <sys/systm.h> 34 #include <dev/pci/pcireg.h> 35 #include <dev/pci/pcivar.h> 36 #include <dev/pci/pcidevs.h> 37 #include <atari/pci/pci_vga.h> 38 #include <atari/dev/grf_etreg.h> 39 #include <atari/include/iomap.h> 40 41 #include <atari/dev/font.h> 42 43 static void loadfont(volatile u_char *, u_char *fb); 44 45 /* XXX: Shouldn't these be in font.h???? */ 46 extern font_info font_info_8x8; 47 extern font_info font_info_8x16; 48 49 /* Console colors */ 50 static u_char conscolors[3][3] = { /* background, foreground, hilite */ 51 {0x0, 0x0, 0x0}, {0x30, 0x30, 0x30}, { 0x3f, 0x3f, 0x3f} 52 }; 53 54 /* 55 * Go look for a VGA card on the PCI-bus. This search is a 56 * stripped down version of the PCI-probe. It only looks on 57 * bus0 for VGA cards. The first card found is used. 58 */ 59 int 60 check_for_vga() 61 { 62 pci_chipset_tag_t pc = NULL; /* XXX */ 63 pcitag_t tag; 64 int device, found, id, maxndevs, i, j; 65 volatile u_char *regs; 66 u_char *fb; 67 char *nbd = "NetBSD/Atari"; 68 69 found = 0; 70 tag = 0; 71 id = 0; 72 maxndevs = pci_bus_maxdevs(pc, 0); 73 74 /* 75 * These are setup in atari_init.c 76 */ 77 regs = (volatile caddr_t)pci_io_addr; 78 fb = (caddr_t)pci_mem_addr; 79 80 for (device = 0; !found && (device < maxndevs); device++) { 81 82 tag = pci_make_tag(pc, 0, device, 0); 83 id = pci_conf_read(pc, tag, PCI_ID_REG); 84 if (id == 0 || id == 0xffffffff) 85 continue; 86 switch (id = PCI_PRODUCT(id)) { 87 88 /* 89 * XXX Make the inclusion of the cases dependend 90 * on config options! 91 */ 92 case PCI_PRODUCT_TSENG_ET6000: 93 case PCI_PRODUCT_TSENG_ET4000_W32P_A: 94 case PCI_PRODUCT_TSENG_ET4000_W32P_B: 95 case PCI_PRODUCT_TSENG_ET4000_W32P_C: 96 case PCI_PRODUCT_TSENG_ET4000_W32P_D: 97 tseng_init(pc, tag, id, regs, fb); 98 found = 1; 99 break; 100 default: 101 break; 102 } 103 } 104 if (!found) 105 return (0); 106 107 /* 108 * Generic parts of the initialization... 109 */ 110 111 /* B&W colors */ 112 vgaw(regs, VDAC_ADDRESS_W, 0); 113 for (i = 0; i < 256; i++) { 114 j = (i & 1) ? ((i > 7) ? 2 : 1) : 0; 115 vgaw(regs, VDAC_DATA, conscolors[j][0]); 116 vgaw(regs, VDAC_DATA, conscolors[j][1]); 117 vgaw(regs, VDAC_DATA, conscolors[j][2]); 118 } 119 120 loadfont(regs, fb); 121 122 /* 123 * Clear the screen and print a message. The latter 124 * is of diagnostic/debug use only. 125 */ 126 for (i = 50 * 80; i >= 0; i -= 2) { 127 fb[i] = 0x20; fb[i+1] = 0x07; 128 } 129 for (i = 56; *nbd; i += 2) 130 fb[i] = *nbd++; 131 132 return (1); 133 } 134 135 /* 136 * Generic VGA. Load the configured kernel font into the videomemory and 137 * place the card into textmode. 138 */ 139 static void 140 loadfont(ba, fb) 141 volatile u_char *ba; /* Register area KVA */ 142 u_char *fb; /* Frame buffer KVA */ 143 { 144 font_info *fd; 145 u_char *c, *f, tmp; 146 u_short z, y; 147 148 #if defined(KFONT_8X8) 149 fd = &font_info_8x8; 150 #else 151 fd = &font_info_8x16; 152 #endif 153 154 WAttr(ba, 0x20 | ACT_ID_ATTR_MODE_CNTL, 0x0a); 155 WSeq(ba, SEQ_ID_MAP_MASK, 0x04); 156 WSeq(ba, SEQ_ID_MEMORY_MODE, 0x06); 157 WGfx(ba, GCT_ID_READ_MAP_SELECT, 0x02); 158 WGfx(ba, GCT_ID_GRAPHICS_MODE, 0x00); 159 WGfx(ba, GCT_ID_MISC, 0x04); 160 161 /* 162 * load text font into beginning of display memory. Each 163 * character cell is 32 bytes long (enough for 4 planes) 164 */ 165 for (z = 0, c = fb; z < 256 * 32; z++) 166 *c++ = 0; 167 168 c = (unsigned char *) (fb) + (32 * fd->font_lo); 169 f = fd->font_p; 170 z = fd->font_lo; 171 for (; z <= fd->font_hi; z++, c += (32 - fd->height)) 172 for (y = 0; y < fd->height; y++) { 173 *c++ = *f++; 174 } 175 176 /* 177 * Odd/Even addressing 178 */ 179 WSeq(ba, SEQ_ID_MAP_MASK, 0x03); 180 WSeq(ba, SEQ_ID_MEMORY_MODE, 0x03); 181 WGfx(ba, GCT_ID_READ_MAP_SELECT, 0x00); 182 WGfx(ba, GCT_ID_GRAPHICS_MODE, 0x10); 183 WGfx(ba, GCT_ID_MISC, 0x06); 184 185 /* 186 * Font height + underline location 187 */ 188 tmp = RCrt(ba, CRT_ID_MAX_ROW_ADDRESS) & 0xe0; 189 WCrt(ba, CRT_ID_MAX_ROW_ADDRESS, tmp | (fd->height - 1)); 190 tmp = RCrt(ba, CRT_ID_UNDERLINE_LOC) & 0xe0; 191 WCrt(ba, CRT_ID_UNDERLINE_LOC, tmp | (fd->height - 1)); 192 193 /* 194 * Cursor setup 195 */ 196 WCrt(ba, CRT_ID_CURSOR_START , 0x00); 197 WCrt(ba, CRT_ID_CURSOR_END , fd->height - 1); 198 WCrt(ba, CRT_ID_CURSOR_LOC_HIGH, 0x00); 199 WCrt(ba, CRT_ID_CURSOR_LOC_LOW , 0x00); 200 201 /* 202 * Enter text mode 203 */ 204 WCrt(ba, CRT_ID_MODE_CONTROL , 0xa3); 205 WAttr(ba, ACT_ID_ATTR_MODE_CNTL | 0x20, 0x0a); 206 } 207