Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/chips/cfb_misc.c
Version:
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1 /* 2 * Mach Operating System 3 * Copyright (c) 1991,1990,1989 Carnegie Mellon University 4 * All Rights Reserved. 5 * 6 * Permission to use, copy, modify and distribute this software and its 7 * documentation is hereby granted, provided that both the copyright 8 * notice and this permission notice appear in all copies of the 9 * software, derivative works or modified versions, and any portions 10 * thereof, and that both notices appear in supporting documentation. 11 * 12 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 13 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 14 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 15 * 16 * Carnegie Mellon requests users of this software to return to 17 * 18 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 19 * School of Computer Science 20 * Carnegie Mellon University 21 * Pittsburgh PA 15213-3890 22 * 23 * any improvements or extensions that they make and grant Carnegie Mellon 24 * the rights to redistribute these changes. 25 */ 26 /* 27 * HISTORY 28 * $Log: cfb_misc.c,v $ 29 * Revision 2.13 93/06/02 13:11:56 rvb 30 * lint 31 * 32 * Revision 2.12 93/05/17 10:26:54 rvb 33 * Type casts, etc to quiet gcc 2.3.3 warnings 34 * 35 * Revision 2.11 93/02/05 08:05:01 danner 36 * Flamingo, protos. 37 * [93/02/04 01:44:04 af] 38 * 39 * Make it share code properly with the "sfb" driver. 40 * [92/11/26 af] 41 * 42 * Revision 2.10 92/05/22 15:46:52 jfriedl 43 * Avoid spls and use SCREEN_BEING_UPDATED instead. 44 * [92/05/21 18:52:22 af] 45 * 46 * bt459_init() changed its looks. 47 * [92/05/13 20:42:50 af] 48 * 49 * Revision 2.9 92/03/02 18:32:03 rpd 50 * When first positioning the cursor use the max_row info. 51 * [92/03/02 01:51:07 af] 52 * 53 * Revision 2.8 92/01/17 11:45:06 rpd 54 * Fixed SCREEN_SET_CURSOR_COLOR to correctly convert the arguments 55 * before shipping them to the chip. Cures a long standing bug. 56 * [92/01/06 af] 57 * 58 * Revision 2.7 91/08/24 11:51:34 af 59 * CharRows is gone, pm_init_screen_params() is different. 60 * [91/08/02 02:00:39 af] 61 * 62 * Revision 2.6 91/06/19 11:47:19 rvb 63 * File moved here from mips/PMAX since it tries to be generic. 64 * [91/06/04 rvb] 65 * 66 * Revision 2.5 91/05/14 17:20:10 mrt 67 * Correcting copyright 68 * 69 * Revision 2.4 91/02/05 17:40:08 mrt 70 * Added author notices 71 * [91/02/04 11:12:28 mrt] 72 * 73 * Changed to use new Mach copyright 74 * [91/02/02 12:10:16 mrt] 75 * 76 * Revision 2.3 90/12/05 23:30:37 af 77 * Cleaned up. 78 * [90/12/03 23:12:16 af] 79 * 80 * Revision 2.1.1.1 90/11/01 03:42:15 af 81 * Created, from the DEC specs: 82 * "PMAG-BA TURBOchannel Color Frame Buffer Functional Specification" 83 * Workstation Systems Engineering, Palo Alto, CA. Aug 27, 1990 84 * [90/09/03 af] 85 */ 86 /* 87 * File: cfb_misc.c 88 * Author: Alessandro Forin, Carnegie Mellon University 89 * Date: 9/90 90 * 91 * Driver for the PMAG-BA simple color framebuffer 92 * 93 */ 94 95 #include <cfb.h> 96 #include <sfb.h> /* shares code */ 97 #if ((NCFB > 0) || (NSFB > 0)) 98 #include <platforms.h> 99 100 /* 101 * NOTE: This driver relies heavily on the pm one. 102 */ 103 104 #include <device/device_types.h> 105 #include <chips/screen_defs.h> 106 #include <chips/pm_defs.h> 107 typedef pm_softc_t cfb_softc_t; 108 109 #include <chips/bt459.h> 110 #define bt459 cursor_registers 111 112 #ifdef DECSTATION 113 #include <mips/PMAX/pmag_ba.h> 114 #endif 115 116 #ifdef FLAMINGO 117 #include <mips/PMAX/pmag_ba.h> /* XXX fixme */ 118 #endif 119 120 /* 121 * Initialize color map, for kernel use 122 */ 123 cfb_init_colormap( 124 screen_softc_t sc) 125 { 126 cfb_softc_t *cfb = (cfb_softc_t*)sc->hw_state; 127 user_info_t *up = sc->up; 128 color_map_t Bg_Fg[2]; 129 register int i; 130 131 bt459_init_colormap( cfb->bt459 ); 132 133 /* init bg/fg colors */ 134 for (i = 0; i < 3; i++) { 135 up->dev_dep_2.pm.Bg_color[i] = 0x00; 136 up->dev_dep_2.pm.Fg_color[i] = 0xff; 137 } 138 139 Bg_Fg[0].red = Bg_Fg[0].green = Bg_Fg[0].blue = 0x00; 140 Bg_Fg[1].red = Bg_Fg[1].green = Bg_Fg[1].blue = 0xff; 141 bt459_cursor_color( cfb->bt459, Bg_Fg); 142 } 143 144 /* 145 * Large viz small cursor 146 */ 147 cfb_small_cursor_to_large( 148 user_info_t *up, 149 cursor_sprite_t cursor) 150 { 151 unsigned short new_cursor[32]; 152 unsigned char *curbytes, fg, fbg; 153 int i, j, k; 154 char *sprite; 155 156 /* Clear out old cursor */ 157 bzero( up->dev_dep_2.pm.cursor_sprite, 158 sizeof(up->dev_dep_2.pm.cursor_sprite)); 159 160 /* small cursor is 32x2 bytes, fg first */ 161 curbytes = (unsigned char *) cursor; 162 163 /* use the upper left corner of the large cursor 164 * as a 64x1 cursor, fg&bg alternated */ 165 for (i = 0; i < 32; i++) { 166 fg = curbytes[i]; 167 fbg = fg | curbytes[i + 32]; 168 new_cursor[i] = 0; 169 for (j = 0, k = 15; j < 8; j++, k -= 2) { 170 new_cursor[i] |= ((fbg >> j) & 0x1) << (k); 171 new_cursor[i] |= ((fg >> j) & 0x1) << (k - 1); 172 } 173 } 174 175 /* Now stick it in the proper place */ 176 177 curbytes = (unsigned char *) new_cursor; 178 sprite = up->dev_dep_2.pm.cursor_sprite; 179 for (i = 0; i < 64; i += 4) { 180 /* butterfly as we go */ 181 *sprite++ = curbytes[i + 1]; 182 *sprite++ = curbytes[i + 0]; 183 *sprite++ = curbytes[i + 3]; 184 *sprite++ = curbytes[i + 2]; 185 sprite += 12; /* skip rest of the line */ 186 } 187 } 188 189 190 /* 191 * Device-specific set status 192 */ 193 cfb_set_status( 194 screen_softc_t sc, 195 dev_flavor_t flavor, 196 dev_status_t status, 197 natural_t status_count) 198 { 199 cfb_softc_t *cfb = (cfb_softc_t*) sc->hw_state; 200 201 switch (flavor) { 202 203 case SCREEN_ADJ_MAPPED_INFO: 204 return pm_set_status(sc, flavor, status, status_count); 205 206 case SCREEN_LOAD_CURSOR: 207 208 if (status_count < sizeof(cursor_sprite_t)/sizeof(int)) 209 return D_INVALID_SIZE; 210 /* cfb_small_cursor_to_large(sc->up, (cursor_sprite_t) status);*/ 211 cfb_small_cursor_to_large(sc->up, (unsigned short *) status); 212 213 /* Fall through */ 214 215 case SCREEN_LOAD_CURSOR_LONG: /* 3max only */ 216 217 sc->flags |= SCREEN_BEING_UPDATED; 218 bt459_cursor_sprite(cfb->bt459, sc->up->dev_dep_2.pm.cursor_sprite); 219 sc->flags &= ~SCREEN_BEING_UPDATED; 220 221 break; 222 223 case SCREEN_SET_CURSOR_COLOR: { 224 color_map_t c[2]; 225 register cursor_color_t *cc = (cursor_color_t*) status; 226 227 c[0].red = cc->Bg_rgb[0]; 228 c[0].green = cc->Bg_rgb[1]; 229 c[0].blue = cc->Bg_rgb[2]; 230 c[1].red = cc->Fg_rgb[0]; 231 c[1].green = cc->Fg_rgb[1]; 232 c[1].blue = cc->Fg_rgb[2]; 233 234 sc->flags |= SCREEN_BEING_UPDATED; 235 bt459_cursor_color (cfb->bt459, c ); 236 sc->flags &= ~SCREEN_BEING_UPDATED; 237 238 break; 239 } 240 241 case SCREEN_SET_CMAP_ENTRY: { 242 color_map_entry_t *e = (color_map_entry_t*) status; 243 244 if (e->index < 256) { 245 sc->flags |= SCREEN_BEING_UPDATED; 246 bt459_load_colormap_entry( cfb->bt459, e->index, &e->value); 247 sc->flags &= ~SCREEN_BEING_UPDATED; 248 } 249 break; 250 } 251 252 default: 253 return D_INVALID_OPERATION; 254 } 255 return D_SUCCESS; 256 } 257 258 #if (NCFB > 0) 259 /* 260 * Hardware initialization 261 */ 262 cfb_init_screen( 263 cfb_softc_t *cfb) 264 { 265 bt459_init( cfb->bt459, 266 cfb->bt459 + (CFB_OFFSET_RESET - CFB_OFFSET_BT459), 267 4 /* 4:1 MUX */); 268 } 269 270 /* 271 * Do what's needed when X exits 272 */ 273 cfb_soft_reset( 274 screen_softc_t sc) 275 { 276 cfb_softc_t *cfb = (cfb_softc_t*) sc->hw_state; 277 user_info_t *up = sc->up; 278 extern cursor_sprite_t dc503_default_cursor; 279 280 /* 281 * Restore params in mapped structure 282 */ 283 pm_init_screen_params(sc,up); 284 up->row = up->max_row - 1; 285 286 up->dev_dep_2.pm.x26 = 2; /* you do not want to know */ 287 up->dev_dep_1.pm.x18 = (short*)2; 288 289 /* 290 * Restore RAMDAC chip to default state 291 */ 292 cfb_init_screen(cfb); 293 294 /* 295 * Load kernel's cursor sprite: just use the same pmax one 296 */ 297 cfb_small_cursor_to_large(up, dc503_default_cursor); 298 bt459_cursor_sprite(cfb->bt459, up->dev_dep_2.pm.cursor_sprite); 299 300 /* 301 * Color map and cursor color 302 */ 303 cfb_init_colormap(sc); 304 } 305 #endif /* NCFB > 0 */ 306 307 308 309 #endif /* (NCFB > 0) || (NSFB > 0) */
Cache object: 7ef989774864191bdbd2f2c4b9501fd3
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