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 10/2002-11/2004. 8 */ 9 10 #define MODULE_BIT 0x00800000 11 12 #include <string.h> 13 #include <unistd.h> 14 #include "acc_std.h" 15 16 static status_t init_common(int the_fd); 17 18 /* Initialization code shared between primary and cloned accelerants */ 19 static status_t init_common(int the_fd) { 20 status_t result; 21 gx00_get_private_data gpd; 22 23 // LOG not available from here to next LOG: NULL si 24 25 /* memorize the file descriptor */ 26 fd = the_fd; 27 /* set the magic number so the driver knows we're for real */ 28 gpd.magic = GX00_PRIVATE_DATA_MAGIC; 29 /* contact driver and get a pointer to the registers and shared data */ 30 result = ioctl(fd, GX00_GET_PRIVATE_DATA, &gpd, sizeof(gpd)); 31 if (result != B_OK) goto error0; 32 33 /* clone the shared area for our use */ 34 shared_info_area = clone_area(DRIVER_PREFIX " shared", (void **)&si, B_ANY_ADDRESS, 35 B_READ_AREA | B_WRITE_AREA, gpd.shared_info_area); 36 if (shared_info_area < 0) { 37 result = shared_info_area; 38 goto error0; 39 } 40 // LOG is now available, si !NULL 41 LOG(4,("init_common: logmask 0x%08x, memory %dMB, hardcursor %d, usebios %d, greensync %d\n", 42 si->settings.logmask, si->settings.memory, si->settings.hardcursor, si->settings.usebios, si->settings.greensync)); 43 44 /*Check for R4.5.0 and if it is running, use work around*/ 45 { 46 if (si->use_clone_bugfix) 47 { 48 /*check for R4.5.0 bug and attempt to work around*/ 49 LOG(2,("InitACC: Found R4.5.0 bug - attempting to work around\n")); 50 regs = si->clone_bugfix_regs; 51 } 52 else 53 { 54 /* clone the memory mapped registers for our use - does not work on <4.5.2 (but is better this way)*/ 55 regs_area = clone_area(DRIVER_PREFIX " regs", (void **)®s, B_ANY_ADDRESS, 56 B_READ_AREA | B_WRITE_AREA, si->regs_area); 57 if (regs_area < 0) { 58 result = regs_area; 59 goto error1; 60 } 61 } 62 } 63 64 /*FIXME - print dma addresses*/ 65 //LOG(4,("DMA_virtual:%x\tDMA_physical:%x\tDMA_area:%x\n",si->dma_buffer,si->dma_buffer_pci,si->dma_buffer_area)); 66 67 /* all done */ 68 goto error0; 69 70 error1: 71 delete_area(shared_info_area); 72 error0: 73 return result; 74 } 75 76 /* Clean up code shared between primary and cloned accelerants */ 77 static void uninit_common(void) { 78 /* release the memory mapped registers */ 79 delete_area(regs_area); 80 /* a little cheap paranoia */ 81 regs = 0; 82 /* release our copy of the shared info from the kernel driver */ 83 delete_area(shared_info_area); 84 /* more cheap paranoia */ 85 si = 0; 86 } 87 88 /* 89 Initialize the accelerant. the_fd is the file handle of the device (in 90 /dev/graphics) that has been opened by the app_server (or some test harness). 91 We need to determine if the kernel driver and the accelerant are compatible. 92 If they are, get the accelerant ready to handle other hook functions and 93 report success or failure. 94 */ 95 status_t INIT_ACCELERANT(int the_fd) { 96 status_t result; 97 int pointer_reservation; //mem reserved for pointer 98 int cnt; //used for iteration through the overlay buffers 99 100 if (0) { 101 time_t now = time (NULL); 102 // LOG not available from here to next LOG: NULL si 103 // MSG(("INIT_ACCELERANT: booted since %f ms %s\n", system_time()/1000.0, real_time_clock())); 104 MSG(("INIT_ACCELERANT: %s", ctime (&now))); 105 } 106 107 /* note that we're the primary accelerant (accelerantIsClone is global) */ 108 accelerantIsClone = 0; 109 110 /* do the initialization common to both the primary and the clones */ 111 result = init_common(the_fd); 112 113 /* bail out if the common initialization failed */ 114 if (result != B_OK) goto error0; 115 // LOG now available: !NULL si 116 117 /* assume G450/G550 signals are connected straight through (before powerup) */ 118 si->crossed_conns = false; 119 120 /* call the device specific init code */ 121 result = gx00_general_powerup(); 122 123 /* bail out if it failed */ 124 if (result != B_OK) goto error1; 125 126 /* 127 Now would be a good time to figure out what video modes your card supports. 128 We'll place the list of modes in another shared area so all of the copies 129 of the driver can see them. The primary copy of the accelerant (ie the one 130 initialized with this routine) will own the "one true copy" of the list. 131 Everybody else get's a read-only clone. 132 */ 133 result = create_mode_list(); 134 if (result != B_OK) 135 { 136 goto error1; 137 } 138 139 /* 140 Put the cursor at the start of the frame buffer. The typical 64x64 4 color 141 (black, white, transparent, inverse) takes up 1024 bytes of RAM. 142 */ 143 /* Initialize the rest of the cursor information while we're here */ 144 si->cursor.width = 16; 145 si->cursor.height = 16; 146 si->cursor.hot_x = 0; 147 si->cursor.hot_y = 0; 148 si->cursor.x = 0; 149 si->cursor.y = 0; 150 151 /* 152 Put the frame buffer immediately following the cursor data. We store this 153 info in a frame_buffer_config structure to make it convienient to return 154 to the app_server later. 155 */ 156 pointer_reservation = 0; 157 /* MIL 1/2 cards have a seperate buffer for the cursorbitmap inside the DAC */ 158 if ((si->ps.card_type >= G100) && si->settings.hardcursor) 159 pointer_reservation = 1024; 160 161 si->fbc.frame_buffer = (void *)((char *)si->framebuffer+pointer_reservation); 162 si->fbc.frame_buffer_dma = (void *)((char *)si->framebuffer_pci+pointer_reservation); 163 164 /* count of issued parameters or commands */ 165 si->engine.last_idle = si->engine.count = 0; 166 INIT_BEN(si->engine.lock); 167 168 INIT_BEN(si->overlay.lock); 169 for (cnt = 0; cnt < MAXBUFFERS; cnt++) 170 { 171 /* make sure overlay buffers are 'marked' as being free */ 172 si->overlay.myBuffer[cnt].buffer = NULL; 173 si->overlay.myBuffer[cnt].buffer_dma = NULL; 174 } 175 /* make sure overlay unit is 'marked' as being free */ 176 si->overlay.myToken = NULL; 177 178 /* note that overlay is not in use (for gx00_bes_move_overlay()) */ 179 si->overlay.active = false; 180 181 /* bail out if something failed */ 182 if (result != B_OK) goto error1; 183 184 /* initialise various cursor stuff*/ 185 gx00_crtc_cursor_init(); 186 187 /* ensure cursor state */ 188 SHOW_CURSOR(false); 189 190 /* a winner! */ 191 result = B_OK; 192 goto error0; 193 194 error1: 195 /* 196 Initialization failed after init_common() succeeded, so we need to clean 197 up before quiting. 198 */ 199 uninit_common(); 200 201 error0: 202 return result; 203 } 204 205 /* 206 Return the number of bytes required to hold the information required 207 to clone the device. 208 */ 209 ssize_t ACCELERANT_CLONE_INFO_SIZE(void) { 210 /* 211 Since we're passing the name of the device as the only required 212 info, return the size of the name buffer 213 */ 214 return B_OS_NAME_LENGTH; // apsed, was MAX_GX00_DEVICE_NAME_LENGTH; 215 } 216 217 218 /* 219 Return the info required to clone the device. void *data points to 220 a buffer at least ACCELERANT_CLONE_INFO_SIZE() bytes in length. 221 */ 222 void GET_ACCELERANT_CLONE_INFO(void *data) { 223 gx00_device_name dn; 224 status_t result; 225 226 /* call the kernel driver to get the device name */ 227 dn.magic = GX00_PRIVATE_DATA_MAGIC; 228 /* store the returned info directly into the passed buffer */ 229 dn.name = (char *)data; 230 result = ioctl(fd, GX00_DEVICE_NAME, &dn, sizeof(dn)); 231 } 232 233 /* 234 Initialize a copy of the accelerant as a clone. void *data points to 235 a copy of the data returned by GET_ACCELERANT_CLONE_INFO(). 236 */ 237 status_t CLONE_ACCELERANT(void *data) { 238 status_t result; 239 char path[MAXPATHLEN]; 240 241 /* the data is the device name */ 242 /* Note: the R4 graphics driver kit is in error here (missing trailing '/') */ 243 strcpy(path, "/dev/"); 244 strcat(path, (const char *)data); 245 /* open the device, the permissions aren't important */ 246 fd = open(path, B_READ_WRITE); 247 if (fd < 0) 248 { 249 /* we can't use LOG because we didn't get the shared_info struct.. */ 250 char fname[64]; 251 FILE *myhand = NULL; 252 253 sprintf (fname, "/boot/home/" DRIVER_PREFIX ".accelerant.0.log"); 254 myhand=fopen(fname,"a+"); 255 fprintf(myhand, "CLONE_ACCELERANT: couldn't open kerneldriver %s! Aborting.\n", path); 256 fclose(myhand); 257 258 /* abort with resultcode from open attempt on kerneldriver */ 259 result = fd; 260 goto error0; 261 } 262 263 /* note that we're a clone accelerant */ 264 accelerantIsClone = 1; 265 266 /* call the shared initialization code */ 267 result = init_common(fd); 268 269 /* bail out if the common initialization failed */ 270 if (result != B_OK) goto error1; 271 272 /* get shared area for display modes */ 273 result = my_mode_list_area = clone_area( 274 DRIVER_PREFIX " cloned display_modes", 275 (void **)&my_mode_list, 276 B_ANY_ADDRESS, 277 B_READ_AREA, 278 si->mode_area 279 ); 280 if (result < B_OK) goto error2; 281 282 /* all done */ 283 LOG(4,("CLONE_ACCELERANT: cloning was succesfull.\n")); 284 285 result = B_OK; 286 goto error0; 287 288 error2: 289 /* free up the areas we cloned */ 290 uninit_common(); 291 error1: 292 /* close the device we opened */ 293 close(fd); 294 error0: 295 return result; 296 } 297 298 void UNINIT_ACCELERANT(void) 299 { 300 if (accelerantIsClone) 301 { 302 LOG(4,("UNINIT_ACCELERANT: shutting down clone accelerant.\n")); 303 } 304 else 305 { 306 LOG(4,("UNINIT_ACCELERANT: shutting down primary accelerant.\n")); 307 308 /* delete benaphores ONLY if we are the primary accelerant */ 309 DELETE_BEN(si->engine.lock); 310 DELETE_BEN(si->overlay.lock); 311 } 312 313 /* free our mode list area */ 314 delete_area(my_mode_list_area); 315 /* paranoia */ 316 my_mode_list = 0; 317 /* release our cloned data */ 318 uninit_common(); 319 /* close the file handle ONLY if we're the clone */ 320 if (accelerantIsClone) close(fd); 321 } 322