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 10/2002-5/2004. 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 nv_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 = NV_PRIVATE_DATA_MAGIC; 29 /* contact driver and get a pointer to the registers and shared data */ 30 result = ioctl(fd, NV_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, switchhead %d\n", 42 si->settings.logmask, si->settings.memory, si->settings.hardcursor, si->settings.usebios, si->settings.switchhead)); 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 accelrants */ 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: %s", ctime (&now))); 104 } 105 106 /* note that we're the primary accelerant (accelerantIsClone is global) */ 107 accelerantIsClone = 0; 108 109 /* do the initialization common to both the primary and the clones */ 110 result = init_common(the_fd); 111 112 /* bail out if the common initialization failed */ 113 if (result != B_OK) goto error0; 114 // LOG now available: !NULL si 115 116 /* call the device specific init code */ 117 result = nv_general_powerup(); 118 119 /* bail out if it failed */ 120 if (result != B_OK) goto error1; 121 122 /* 123 Now would be a good time to figure out what video modes your card supports. 124 We'll place the list of modes in another shared area so all of the copies 125 of the driver can see them. The primary copy of the accelerant (ie the one 126 initialized with this routine) will own the "one true copy" of the list. 127 Everybody else get's a read-only clone. 128 */ 129 result = create_mode_list(); 130 if (result != B_OK) 131 { 132 goto error1; 133 } 134 135 /* 136 Put the cursor at the start of the frame buffer. 137 Nvidia cursor is 32x32 16 color? takes up 4096 bytes of RAM. 138 */ 139 /* Initialize the rest of the cursor information while we're here */ 140 si->cursor.width = 16; 141 si->cursor.height = 16; 142 si->cursor.hot_x = 0; 143 si->cursor.hot_y = 0; 144 si->cursor.x = 0; 145 si->cursor.y = 0; 146 si->cursor.dh_right = false; 147 148 /* 149 Put the frame buffer immediately following the cursor data. We store this 150 info in a frame_buffer_config structure to make it convienient to return 151 to the app_server later. 152 */ 153 pointer_reservation = 0; 154 /* Nvidia hardcursor needs 2kB space */ 155 if (si->settings.hardcursor) pointer_reservation = 2048; 156 157 si->fbc.frame_buffer = (void *)((char *)si->framebuffer+pointer_reservation); 158 si->fbc.frame_buffer_dma = (void *)((char *)si->framebuffer_pci+pointer_reservation); 159 160 /* count of issued parameters or commands */ 161 si->engine.last_idle = si->engine.count = 0; 162 INIT_BEN(si->engine.lock); 163 164 INIT_BEN(si->overlay.lock); 165 for (cnt = 0; cnt < MAXBUFFERS; cnt++) 166 { 167 /* make sure overlay buffers are 'marked' as being free */ 168 si->overlay.myBuffer[cnt].buffer = NULL; 169 si->overlay.myBuffer[cnt].buffer_dma = NULL; 170 } 171 /* make sure overlay unit is 'marked' as being free */ 172 si->overlay.myToken = NULL; 173 174 /* note that overlay is not in use (for nv_bes_move_overlay()) */ 175 si->overlay.active = false; 176 177 /* bail out if something failed */ 178 if (result != B_OK) goto error1; 179 180 /* initialise various cursor stuff*/ 181 head1_cursor_init(); 182 if (si->ps.secondary_head) head2_cursor_init(); 183 184 /* ensure cursor state */ 185 SHOW_CURSOR(false); 186 187 /* a winner! */ 188 result = B_OK; 189 goto error0; 190 191 error1: 192 /* 193 Initialization failed after init_common() succeeded, so we need to clean 194 up before quiting. 195 */ 196 uninit_common(); 197 198 error0: 199 return result; 200 } 201 202 /* 203 Return the number of bytes required to hold the information required 204 to clone the device. 205 */ 206 ssize_t ACCELERANT_CLONE_INFO_SIZE(void) { 207 /* 208 Since we're passing the name of the device as the only required 209 info, return the size of the name buffer 210 */ 211 return B_OS_NAME_LENGTH; // apsed, was MAX_NV_DEVICE_NAME_LENGTH; 212 } 213 214 215 /* 216 Return the info required to clone the device. void *data points to 217 a buffer at least ACCELERANT_CLONE_INFO_SIZE() bytes in length. 218 */ 219 void GET_ACCELERANT_CLONE_INFO(void *data) { 220 nv_device_name dn; 221 status_t result; 222 223 /* call the kernel driver to get the device name */ 224 dn.magic = NV_PRIVATE_DATA_MAGIC; 225 /* store the returned info directly into the passed buffer */ 226 dn.name = (char *)data; 227 result = ioctl(fd, NV_DEVICE_NAME, &dn, sizeof(dn)); 228 } 229 230 /* 231 Initialize a copy of the accelerant as a clone. void *data points to 232 a copy of the data returned by GET_ACCELERANT_CLONE_INFO(). 233 */ 234 status_t CLONE_ACCELERANT(void *data) { 235 status_t result; 236 char path[MAXPATHLEN]; 237 238 /* the data is the device name */ 239 /* Note: the R4 graphics driver kit is in error here (missing trailing '/') */ 240 strcpy(path, "/dev/"); 241 strcat(path, (const char *)data); 242 /* open the device, the permissions aren't important */ 243 fd = open(path, B_READ_WRITE); 244 if (fd < 0) 245 { 246 /* we can't use LOG because we didn't get the shared_info struct.. */ 247 char fname[64]; 248 FILE *myhand = NULL; 249 250 sprintf (fname, "/boot/home/" DRIVER_PREFIX ".accelerant.0.log"); 251 myhand=fopen(fname,"a+"); 252 fprintf(myhand, "CLONE_ACCELERANT: couldn't open kerneldriver %s! Aborting.\n", path); 253 fclose(myhand); 254 255 /* abort with resultcode from open attempt on kerneldriver */ 256 result = fd; 257 goto error0; 258 } 259 260 /* note that we're a clone accelerant */ 261 accelerantIsClone = 1; 262 263 /* call the shared initialization code */ 264 result = init_common(fd); 265 266 /* setup CRTC and DAC functions access */ 267 setup_virtualized_heads(si->crtc_switch_mode); 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