1 /* 2 Copyright 1999, Be Incorporated. All Rights Reserved. 3 This file may be used under the terms of the Be Sample Code License. 4 5 Other authors: 6 Mark Watson, 7 Rudolf Cornelissen 10/2002-1/2006. 8 */ 9 10 #define MODULE_BIT 0x00800000 11 12 #include <string.h> 13 #include <unistd.h> 14 #include <errno.h> 15 #include "acc_std.h" 16 17 static status_t init_common(int the_fd); 18 19 /* Initialization code shared between primary and cloned accelerants */ 20 static status_t init_common(int the_fd) 21 { 22 status_t result; 23 gx00_get_private_data gpd; 24 25 // LOG not available from here to next LOG: NULL si 26 27 /* memorize the file descriptor */ 28 fd = the_fd; 29 /* set the magic number so the driver knows we're for real */ 30 gpd.magic = GX00_PRIVATE_DATA_MAGIC; 31 /* contact driver and get a pointer to the registers and shared data */ 32 result = ioctl(fd, GX00_GET_PRIVATE_DATA, &gpd, sizeof(gpd)); 33 if (result != B_OK) goto error0; 34 35 /* clone the shared area for our use */ 36 shared_info_area = clone_area(DRIVER_PREFIX " shared", (void **)&si, B_ANY_ADDRESS, 37 B_READ_AREA | B_WRITE_AREA, gpd.shared_info_area); 38 if (shared_info_area < 0) { 39 result = shared_info_area; 40 goto error0; 41 } 42 // LOG is now available, si !NULL 43 LOG(4,("init_common: logmask 0x%08x, memory %dMB, hardcursor %d, usebios %d, greensync %d\n", 44 si->settings.logmask, si->settings.memory, si->settings.hardcursor, si->settings.usebios, si->settings.greensync)); 45 46 /*Check for R4.5.0 and if it is running, use work around*/ 47 { 48 if (si->use_clone_bugfix) 49 { 50 /*check for R4.5.0 bug and attempt to work around*/ 51 LOG(2,("InitACC: Found R4.5.0 bug - attempting to work around\n")); 52 regs = si->clone_bugfix_regs; 53 } 54 else 55 { 56 /* clone the memory mapped registers for our use - does not work on <4.5.2 (but is better this way)*/ 57 regs_area = clone_area(DRIVER_PREFIX " regs", (void **)®s, B_ANY_ADDRESS, 58 B_READ_AREA | B_WRITE_AREA, si->regs_area); 59 if (regs_area < 0) { 60 result = regs_area; 61 goto error1; 62 } 63 } 64 } 65 66 /*FIXME - print dma addresses*/ 67 //LOG(4,("DMA_virtual:%x\tDMA_physical:%x\tDMA_area:%x\n",si->dma_buffer,si->dma_buffer_pci,si->dma_buffer_area)); 68 69 /* all done */ 70 goto error0; 71 72 error1: 73 delete_area(shared_info_area); 74 error0: 75 return result; 76 } 77 78 /* Clean up code shared between primary and cloned accelerants */ 79 static void uninit_common(void) { 80 /* release the memory mapped registers */ 81 delete_area(regs_area); 82 /* a little cheap paranoia */ 83 regs = 0; 84 /* release our copy of the shared info from the kernel driver */ 85 delete_area(shared_info_area); 86 /* more cheap paranoia */ 87 si = 0; 88 } 89 90 /* 91 Initialize the accelerant. the_fd is the file handle of the device (in 92 /dev/graphics) that has been opened by the app_server (or some test harness). 93 We need to determine if the kernel driver and the accelerant are compatible. 94 If they are, get the accelerant ready to handle other hook functions and 95 report success or failure. 96 */ 97 status_t INIT_ACCELERANT(int the_fd) 98 { 99 status_t result; 100 int pointer_reservation; //mem reserved for pointer 101 int cnt; //used for iteration through the overlay buffers 102 103 if (0) { 104 time_t now = time (NULL); 105 // LOG not available from here to next LOG: NULL si 106 // MSG(("INIT_ACCELERANT: booted since %f ms %s\n", system_time()/1000.0, real_time_clock())); 107 MSG(("INIT_ACCELERANT: %s", ctime (&now))); 108 } 109 110 /* note that we're the primary accelerant (accelerantIsClone is global) */ 111 accelerantIsClone = 0; 112 113 /* do the initialization common to both the primary and the clones */ 114 result = init_common(the_fd); 115 116 /* bail out if the common initialization failed */ 117 if (result != B_OK) 118 goto error0; 119 // LOG now available: !NULL si 120 121 /* ensure that INIT_ACCELERANT is executed just once (copies should be clones) */ 122 if (si->accelerant_in_use) 123 { 124 result = B_NOT_ALLOWED; 125 goto error1; 126 } 127 128 /* assume G450/G550 signals are connected straight through (before powerup) */ 129 si->crossed_conns = false; 130 131 /* call the device specific init code */ 132 result = gx00_general_powerup(); 133 134 /* bail out if it failed */ 135 if (result != B_OK) 136 goto error1; 137 138 /* 139 Now would be a good time to figure out what video modes your card supports. 140 We'll place the list of modes in another shared area so all of the copies 141 of the driver can see them. The primary copy of the accelerant (ie the one 142 initialized with this routine) will own the "one true copy" of the list. 143 Everybody else get's a read-only clone. 144 */ 145 result = create_mode_list(); 146 if (result != B_OK) 147 goto error1; 148 149 /* 150 Put the cursor at the start of the frame buffer. The typical 64x64 4 color 151 (black, white, transparent, inverse) takes up 1024 bytes of RAM. 152 */ 153 /* Initialize the rest of the cursor information while we're here */ 154 si->cursor.width = 16; 155 si->cursor.height = 16; 156 si->cursor.hot_x = 0; 157 si->cursor.hot_y = 0; 158 si->cursor.x = 0; 159 si->cursor.y = 0; 160 161 /* 162 Put the frame buffer immediately following the cursor data. We store this 163 info in a frame_buffer_config structure to make it convienient to return 164 to the app_server later. 165 */ 166 pointer_reservation = 0; 167 /* MIL 1/2 cards have a seperate buffer for the cursorbitmap inside the DAC */ 168 if ((si->ps.card_type >= G100) && si->settings.hardcursor) 169 pointer_reservation = 1024; 170 171 si->fbc.frame_buffer = (void *)((char *)si->framebuffer+pointer_reservation); 172 si->fbc.frame_buffer_dma = (void *)((char *)si->framebuffer_pci+pointer_reservation); 173 174 /* count of issued parameters or commands */ 175 si->engine.last_idle = si->engine.count = 0; 176 INIT_BEN(si->engine.lock); 177 178 INIT_BEN(si->overlay.lock); 179 for (cnt = 0; cnt < MAXBUFFERS; cnt++) 180 { 181 /* make sure overlay buffers are 'marked' as being free */ 182 si->overlay.myBuffer[cnt].buffer = NULL; 183 si->overlay.myBuffer[cnt].buffer_dma = NULL; 184 } 185 /* make sure overlay unit is 'marked' as being free */ 186 si->overlay.myToken = NULL; 187 188 /* note that overlay is not in use (for gx00_bes_move_overlay()) */ 189 si->overlay.active = false; 190 191 /* initialise various cursor stuff*/ 192 gx00_crtc_cursor_init(); 193 194 /* ensure cursor state */ 195 SHOW_CURSOR(false); 196 197 /* ensure DPMS state */ 198 si->dpms_flags = B_DPMS_ON; 199 200 /* a winner! */ 201 result = B_OK; 202 /* ensure that INIT_ACCELERANT won't be executed again (copies should be clones) */ 203 si->accelerant_in_use = true; 204 goto error0; 205 206 error1: 207 /* 208 Initialization failed after init_common() succeeded, so we need to clean 209 up before quiting. 210 */ 211 uninit_common(); 212 213 error0: 214 return result; 215 } 216 217 /* 218 Return the number of bytes required to hold the information required 219 to clone the device. 220 */ 221 ssize_t ACCELERANT_CLONE_INFO_SIZE(void) { 222 /* 223 Since we're passing the name of the device as the only required 224 info, return the size of the name buffer 225 */ 226 return B_OS_NAME_LENGTH; // apsed, was MAX_GX00_DEVICE_NAME_LENGTH; 227 } 228 229 230 /* 231 Return the info required to clone the device. void *data points to 232 a buffer at least ACCELERANT_CLONE_INFO_SIZE() bytes in length. 233 */ 234 void GET_ACCELERANT_CLONE_INFO(void *data) { 235 gx00_device_name dn; 236 status_t result; 237 238 /* call the kernel driver to get the device name */ 239 dn.magic = GX00_PRIVATE_DATA_MAGIC; 240 /* store the returned info directly into the passed buffer */ 241 dn.name = (char *)data; 242 result = ioctl(fd, GX00_DEVICE_NAME, &dn, sizeof(dn)); 243 } 244 245 /* 246 Initialize a copy of the accelerant as a clone. void *data points to 247 a copy of the data returned by GET_ACCELERANT_CLONE_INFO(). 248 */ 249 status_t CLONE_ACCELERANT(void *data) { 250 status_t result; 251 char path[MAXPATHLEN]; 252 253 /* the data is the device name */ 254 /* Note: the R4 graphics driver kit is in error here (missing trailing '/') */ 255 strcpy(path, "/dev/"); 256 strcat(path, (const char *)data); 257 /* open the device, the permissions aren't important */ 258 fd = open(path, B_READ_WRITE); 259 if (fd < 0) 260 { 261 /* we can't use LOG because we didn't get the shared_info struct.. */ 262 char fname[64]; 263 FILE *myhand = NULL; 264 265 sprintf (fname, "/boot/home/" DRIVER_PREFIX ".accelerant.0.log"); 266 myhand=fopen(fname,"a+"); 267 fprintf(myhand, "CLONE_ACCELERANT: couldn't open kerneldriver %s! Aborting.\n", path); 268 fclose(myhand); 269 270 /* abort with resultcode from open attempt on kerneldriver */ 271 result = errno; 272 goto error0; 273 } 274 275 /* note that we're a clone accelerant */ 276 accelerantIsClone = 1; 277 278 /* call the shared initialization code */ 279 result = init_common(fd); 280 281 /* bail out if the common initialization failed */ 282 if (result != B_OK) goto error1; 283 284 /* ensure that INIT_ACCELERANT is executed first (i.e. primary accelerant exists) */ 285 if (!(si->accelerant_in_use)) 286 { 287 result = B_NOT_ALLOWED; 288 goto error2; 289 } 290 291 /* get shared area for display modes */ 292 result = my_mode_list_area = clone_area( 293 DRIVER_PREFIX " cloned display_modes", 294 (void **)&my_mode_list, 295 B_ANY_ADDRESS, 296 B_READ_AREA, 297 si->mode_area 298 ); 299 if (result < B_OK) goto error2; 300 301 /* all done */ 302 LOG(4,("CLONE_ACCELERANT: cloning was succesfull.\n")); 303 304 result = B_OK; 305 goto error0; 306 307 error2: 308 /* free up the areas we cloned */ 309 uninit_common(); 310 error1: 311 /* close the device we opened */ 312 close(fd); 313 error0: 314 return result; 315 } 316 317 void UNINIT_ACCELERANT(void) 318 { 319 if (accelerantIsClone) 320 { 321 LOG(4,("UNINIT_ACCELERANT: shutting down clone accelerant.\n")); 322 } 323 else 324 { 325 LOG(4,("UNINIT_ACCELERANT: shutting down primary accelerant.\n")); 326 327 /* delete benaphores ONLY if we are the primary accelerant */ 328 DELETE_BEN(si->engine.lock); 329 DELETE_BEN(si->overlay.lock); 330 331 /* ensure that INIT_ACCELERANT can be executed again */ 332 si->accelerant_in_use = false; 333 } 334 335 /* free our mode list area */ 336 delete_area(my_mode_list_area); 337 /* paranoia */ 338 my_mode_list = 0; 339 /* release our cloned data */ 340 uninit_common(); 341 /* close the file handle ONLY if we're the clone */ 342 if (accelerantIsClone) close(fd); 343 } 344