pci_vga.c revision 1.13
1 /* $NetBSD: pci_vga.c,v 1.13 2009/03/14 21:04:06 dsl 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 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: pci_vga.c,v 1.13 2009/03/14 21:04:06 dsl Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/queue.h> 37 #include <sys/systm.h> 38 #include <dev/pci/pcireg.h> 39 #include <dev/pci/pcivar.h> 40 #include <dev/pci/pcidevs.h> 41 #include <atari/pci/pci_vga.h> 42 #include <atari/dev/grf_etreg.h> 43 #include <atari/include/iomap.h> 44 45 #include <atari/dev/font.h> 46 47 #include "vga_pci.h" 48 #if NVGA_PCI > 0 49 #include <dev/cons.h> 50 #include <dev/ic/mc6845reg.h> 51 #include <dev/ic/pcdisplayvar.h> 52 #include <dev/ic/vgareg.h> 53 #include <dev/ic/vgavar.h> 54 #endif 55 56 static void loadfont(volatile u_char *, u_char *fb); 57 58 /* XXX: Shouldn't these be in font.h???? */ 59 extern font_info font_info_8x8; 60 extern font_info font_info_8x16; 61 62 /* Console colors */ 63 static u_char conscolors[3][3] = { /* background, foreground, hilite */ 64 {0x0, 0x0, 0x0}, {0x30, 0x30, 0x30}, { 0x3f, 0x3f, 0x3f} 65 }; 66 67 static bus_space_tag_t vga_iot, vga_memt; 68 static int tags_valid = 0; 69 70 #define VGA_REG_SIZE (8*1024) 71 #define VGA_FB_SIZE (32*1024) 72 73 /* 74 * Go look for a VGA card on the PCI-bus. This search is a 75 * stripped down version of the PCI-probe. It only looks on 76 * bus0 for VGA cards. The first card found is used. 77 */ 78 int 79 check_for_vga(bus_space_tag_t iot, bus_space_tag_t memt) 80 { 81 pci_chipset_tag_t pc = NULL; /* XXX */ 82 bus_space_handle_t ioh_regs, memh_fb; 83 pcitag_t tag; 84 int device, found, id, maxndevs, i, j; 85 int class, got_ioh, got_memh, rv; 86 volatile u_char *regs; 87 u_char *fb; 88 const char *nbd = "NetBSD/Atari"; 89 90 found = 0; 91 tag = 0; 92 id = 0; 93 rv = 0; 94 got_ioh = 0; 95 got_memh = 0; 96 maxndevs = pci_bus_maxdevs(pc, 0); 97 98 /* 99 * Map 8Kb of registers and 32Kb frame buffer. 100 * XXX: The way the registers are mapped here is plain wrong. 101 * We should try to pin-point the region down to 3[bcd]0 (see 102 * .../dev/ic/vga.c). 103 */ 104 if (bus_space_map(iot, 0, VGA_REG_SIZE, 0, &ioh_regs)) 105 return 0; 106 got_ioh = 1; 107 108 if (bus_space_map(memt, 0xa0000, VGA_FB_SIZE, 0, &memh_fb)) 109 goto bad; 110 got_memh = 1; 111 regs = bus_space_vaddr(iot, ioh_regs); 112 fb = bus_space_vaddr(memt, memh_fb); 113 114 for (device = 0; !found && (device < maxndevs); device++) { 115 116 tag = pci_make_tag(pc, 0, device, 0); 117 id = pci_conf_read(pc, tag, PCI_ID_REG); 118 if (id == 0 || id == 0xffffffff) 119 continue; 120 121 /* 122 * Check if we have some display device here... 123 */ 124 class = pci_conf_read(pc, tag, PCI_CLASS_REG); 125 i = 0; 126 if (PCI_CLASS(class) == PCI_CLASS_PREHISTORIC && 127 PCI_SUBCLASS(class) == PCI_SUBCLASS_PREHISTORIC_VGA) 128 i = 1; 129 if (PCI_CLASS(class) == PCI_CLASS_DISPLAY && 130 PCI_SUBCLASS(class) == PCI_SUBCLASS_DISPLAY_VGA) 131 i = 1; 132 if (i == 0) 133 continue; 134 135 #if _MILANHW_ 136 /* Don't need to be more specific */ 137 milan_vga_init(pc, tag, id, regs, fb); 138 found = 1; 139 #else 140 switch (id = PCI_PRODUCT(id)) { 141 142 /* 143 * XXX Make the inclusion of the cases dependend 144 * on config options! 145 */ 146 case PCI_PRODUCT_TSENG_ET6000: 147 case PCI_PRODUCT_TSENG_ET4000_W32P_A: 148 case PCI_PRODUCT_TSENG_ET4000_W32P_B: 149 case PCI_PRODUCT_TSENG_ET4000_W32P_C: 150 case PCI_PRODUCT_TSENG_ET4000_W32P_D: 151 tseng_init(pc, tag, id, regs, fb); 152 found = 1; 153 break; 154 case PCI_PRODUCT_ATI_RAGE_PRO_PCI_P: 155 ati_vga_init(pc, tag, id, regs, fb); 156 found = 1; 157 break; 158 default: 159 break; 160 } 161 #endif /* _MILANHW_ */ 162 } 163 if (!found) 164 goto bad; 165 166 /* 167 * Assume the device is in CGA mode. Wscons expects this too... 168 */ 169 bus_space_unmap(memt, memh_fb, VGA_FB_SIZE); 170 if (bus_space_map(memt, 0xb8000, VGA_FB_SIZE, 0, &memh_fb)) { 171 got_memh = 0; 172 goto bad; 173 } 174 fb = bus_space_vaddr(memt, memh_fb); 175 176 /* 177 * Generic parts of the initialization... 178 */ 179 180 /* B&W colors */ 181 vgaw(regs, VDAC_ADDRESS_W, 0); 182 for (i = 0; i < 256; i++) { 183 j = (i & 1) ? ((i > 7) ? 2 : 1) : 0; 184 vgaw(regs, VDAC_DATA, conscolors[j][0]); 185 vgaw(regs, VDAC_DATA, conscolors[j][1]); 186 vgaw(regs, VDAC_DATA, conscolors[j][2]); 187 } 188 189 loadfont(regs, fb); 190 191 /* 192 * Clear the screen and print a message. The latter 193 * is of diagnostic/debug use only. 194 */ 195 for (i = 50 * 80; i >= 0; i -= 2) { 196 fb[i] = 0x20; fb[i+1] = 0x07; 197 } 198 for (i = 56; *nbd; i += 2) 199 fb[i] = *nbd++; 200 201 rv = 1; 202 vga_iot = iot; 203 vga_memt = memt; 204 rv = tags_valid = 1; 205 206 bad: 207 if (got_memh) 208 bus_space_unmap(memt, memh_fb, VGA_FB_SIZE); 209 if (got_ioh) 210 bus_space_unmap(iot, ioh_regs, VGA_REG_SIZE); 211 return (rv); 212 } 213 214 #if NVGA_PCI > 0 215 void vgacnprobe(struct consdev *); 216 void vgacninit(struct consdev *); 217 218 void 219 vgacnprobe(struct consdev *cp) 220 { 221 if (tags_valid) 222 cp->cn_pri = CN_NORMAL; 223 } 224 225 void 226 vgacninit(struct consdev *cp) 227 { 228 if (tags_valid) { 229 /* XXX: Are those arguments correct? Leo */ 230 vga_cnattach(vga_iot, vga_memt, 8, 0); 231 } 232 } 233 #endif /* NVGA_PCI */ 234 235 /* 236 * Generic VGA. Load the configured kernel font into the videomemory and 237 * place the card into textmode. 238 */ 239 static void 240 loadfont(volatile u_char *ba, u_char *fb) 241 /* ba: Register area KVA */ 242 /* fb: Frame buffer KVA */ 243 { 244 font_info *fd; 245 u_char *c, *f, tmp; 246 u_short z, y; 247 248 #if defined(KFONT_8X8) 249 fd = &font_info_8x8; 250 #else 251 fd = &font_info_8x16; 252 #endif 253 254 WAttr(ba, 0x20 | ACT_ID_ATTR_MODE_CNTL, 0x0a); 255 WSeq(ba, SEQ_ID_MAP_MASK, 0x04); 256 WSeq(ba, SEQ_ID_MEMORY_MODE, 0x06); 257 WGfx(ba, GCT_ID_READ_MAP_SELECT, 0x02); 258 WGfx(ba, GCT_ID_GRAPHICS_MODE, 0x00); 259 WGfx(ba, GCT_ID_MISC, 0x0c); 260 261 /* 262 * load text font into beginning of display memory. Each 263 * character cell is 32 bytes long (enough for 4 planes) 264 */ 265 for (z = 0, c = fb; z < 256 * 32; z++) 266 *c++ = 0; 267 268 c = (unsigned char *) (fb) + (32 * fd->font_lo); 269 f = fd->font_p; 270 z = fd->font_lo; 271 for (; z <= fd->font_hi; z++, c += (32 - fd->height)) 272 for (y = 0; y < fd->height; y++) { 273 *c++ = *f++; 274 } 275 276 /* 277 * Odd/Even addressing 278 */ 279 WSeq(ba, SEQ_ID_MAP_MASK, 0x03); 280 WSeq(ba, SEQ_ID_MEMORY_MODE, 0x03); 281 WGfx(ba, GCT_ID_READ_MAP_SELECT, 0x00); 282 WGfx(ba, GCT_ID_GRAPHICS_MODE, 0x10); 283 WGfx(ba, GCT_ID_MISC, 0x0e); 284 285 /* 286 * Font height + underline location 287 */ 288 tmp = RCrt(ba, CRT_ID_MAX_ROW_ADDRESS) & 0xe0; 289 WCrt(ba, CRT_ID_MAX_ROW_ADDRESS, tmp | (fd->height - 1)); 290 tmp = RCrt(ba, CRT_ID_UNDERLINE_LOC) & 0xe0; 291 WCrt(ba, CRT_ID_UNDERLINE_LOC, tmp | (fd->height - 1)); 292 293 /* 294 * Cursor setup 295 */ 296 WCrt(ba, CRT_ID_CURSOR_START , 0x00); 297 WCrt(ba, CRT_ID_CURSOR_END , fd->height - 1); 298 WCrt(ba, CRT_ID_CURSOR_LOC_HIGH, 0x00); 299 WCrt(ba, CRT_ID_CURSOR_LOC_LOW , 0x00); 300 301 /* 302 * Enter text mode 303 */ 304 WCrt(ba, CRT_ID_MODE_CONTROL , 0xa3); 305 WAttr(ba, ACT_ID_ATTR_MODE_CNTL | 0x20, 0x0a); 306 } 307
Indexes created Wed Sep 24 05:09:52 GMT 2025