src/add-ons/accelerants/nvidia/InitAccelerant.c

   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 10/2002-3/2009.
   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, force_pci %d\n",
  42                 si->settings.logmask, si->settings.memory, si->settings.hardcursor, si->settings.usebios, si->settings.switchhead, si->settings.force_pci));
  43         LOG(4,("init_common: dumprom %d, unhide_fw %d, pgm_panel %d, dma_acc %d, tv_output %d, vga_on_tv %d\n",
  44                 si->settings.dumprom, si->settings.unhide_fw, si->settings.pgm_panel, si->settings.dma_acc, si->settings.tv_output, si->settings.vga_on_tv));
  45         LOG(4,("init_common: force_sync %d, gpu_clk %dMhz, ram_clk %dMhz, force_ws %d, block_acc %d\n",
  46                 si->settings.force_sync, si->settings.gpu_clk, si->settings.ram_clk, si->settings.force_ws, si->settings.block_acc));
  47
  48         /*Check for R4.5.0 and if it is running, use work around*/
  49         {
  50                 if (si->use_clone_bugfix)
  51                 {
  52                         /*check for R4.5.0 bug and attempt to work around*/
  53                         LOG(2,("InitACC: Found R4.5.0 bug - attempting to work around\n"));
  54                         regs = si->clone_bugfix_regs;
  55                 }
  56                 else
  57                 {
  58                         /* clone the memory mapped registers for our use  - does not work on <4.5.2 (but is better this way)*/
  59                         regs_area = clone_area(DRIVER_PREFIX " regs", (void **)&regs, B_ANY_ADDRESS,
  60                                 B_READ_AREA | B_WRITE_AREA, si->regs_area);
  61                         if (regs_area < 0) {
  62                                 result = regs_area;
  63                                 goto error1;
  64                         }
  65                 }
  66         }
  67
  68         /* all done */
  69         goto error0;
  70
  71 error1:
  72         delete_area(shared_info_area);
  73 error0:
  74         return result;
  75 }
  76
  77 /* Clean up code shared between primary and cloned accelrants */
  78 static void uninit_common(void) {
  79         /* release the memory mapped registers */
  80         delete_area(regs_area);
  81         /* a little cheap paranoia */
  82         regs = 0;
  83         /* release our copy of the shared info from the kernel driver */
  84         delete_area(shared_info_area);
  85         /* more cheap paranoia */
  86         si = 0;
  87 }
  88
  89 /*
  90 Initialize the accelerant.  the_fd is the file handle of the device (in
  91 /dev/graphics) that has been opened by the app_server (or some test harness).
  92 We need to determine if the kernel driver and the accelerant are compatible.
  93 If they are, get the accelerant ready to handle other hook functions and
  94 report success or failure.
  95 */
  96 status_t INIT_ACCELERANT(int the_fd)
  97 {
  98         status_t result;
  99         int pointer_reservation; //mem reserved for pointer
 100         int cnt;                                 //used for iteration through the overlay buffers
 101
 102         if (0) {
 103                 time_t now = time (NULL);
 104                 // LOG not available from here to next LOG: NULL si
 105                 MSG(("INIT_ACCELERANT: %s", ctime (&now)));
 106         }
 107
 108         /* note that we're the primary accelerant (accelerantIsClone is global) */
 109         accelerantIsClone = 0;
 110
 111         /* do the initialization common to both the primary and the clones */
 112         result = init_common(the_fd);
 113
 114         /* bail out if the common initialization failed */
 115         if (result != B_OK) goto error0;
 116         // LOG now available: !NULL si
 117
 118         /* ensure that INIT_ACCELERANT is executed just once (copies should be clones) */
 119         if (si->accelerant_in_use)
 120         {
 121                 result = B_NOT_ALLOWED;
 122                 goto error1;
 123         }
 124
 125         /* call the device specific init code */
 126         result = nv_general_powerup();
 127
 128         /* bail out if it failed */
 129         if (result != B_OK) goto error1;
 130
 131         /*
 132         Now would be a good time to figure out what video modes your card supports.
 133         We'll place the list of modes in another shared area so all of the copies
 134         of the driver can see them.  The primary copy of the accelerant (ie the one
 135         initialized with this routine) will own the "one true copy" of the list.
 136         Everybody else get's a read-only clone.
 137         */
 138         result = create_mode_list();
 139         if (result != B_OK)
 140         {
 141                 goto error1;
 142         }
 143
 144         /*
 145         Put the cursor at the start of the frame buffer.
 146         Nvidia cursor is 32x32 16 color? takes up 4096 bytes of RAM.
 147         */
 148         /* Initialize the rest of the cursor information while we're here */
 149         si->cursor.width = 16;
 150         si->cursor.height = 16;
 151         si->cursor.hot_x = 0;
 152         si->cursor.hot_y = 0;
 153         si->cursor.x = 0;
 154         si->cursor.y = 0;
 155         si->cursor.dh_right = false;
 156
 157         /*
 158         Put the frame buffer immediately following the cursor data. We store this
 159         info in a frame_buffer_config structure to make it convienient to return
 160         to the app_server later.
 161         */
 162         pointer_reservation = 0;
 163         /* Nvidia hardcursor needs 2kB space */
 164         if (si->settings.hardcursor) pointer_reservation = 2048;
 165
 166         si->fbc.frame_buffer = (void *)((char *)si->framebuffer+pointer_reservation);
 167         si->fbc.frame_buffer_dma = (void *)((char *)si->framebuffer_pci+pointer_reservation);
 168
 169         /* count of issued parameters or commands */
 170         si->engine.last_idle = si->engine.count = 0;
 171         /* no 3D clones are currently loaded */
 172         si->engine.threeD.clones = 0;
 173         /* tell 3D add-ons that they should reload their rendering states and surfaces */
 174         si->engine.threeD.reload = 0xffffffff;
 175         INIT_BEN(si->engine.lock);
 176
 177         INIT_BEN(si->overlay.lock);
 178         for (cnt = 0; cnt < MAXBUFFERS; cnt++)
 179         {
 180                 /* make sure overlay buffers are 'marked' as being free */
 181                 si->overlay.myBuffer[cnt].buffer = NULL;
 182                 si->overlay.myBuffer[cnt].buffer_dma = NULL;
 183         }
 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 nv_bes_move_overlay()) */
 189         si->overlay.active = false;
 190
 191         /* bail out if something failed */
 192         if (result != B_OK) goto error1;
 193
 194         /* initialise various cursor stuff */
 195         head1_cursor_init();
 196         if (si->ps.secondary_head) head2_cursor_init();
 197
 198         /* ensure cursor state */
 199         head1_cursor_hide();
 200         if (si->ps.secondary_head) head2_cursor_hide();
 201
 202         /* ensure DPMS state */
 203         si->dpms_flags = B_DPMS_ON;
 204
 205         /* ensure TVout state:
 206          * TVencoder is on head to be assigned primary, no dualhead switch mode active. */
 207         //fixme: actually check on what CRTC TVout was active during boot (if any)...
 208         si->dm.flags = TV_PRIMARY;
 209
 210         /* make sure a possible 3D add-on will block rendering and re-initialize itself.
 211          * note: update in _this_ order only */
 212         /* SET_DISPLAY_MODE will reset this flag when it's done. */
 213         si->engine.threeD.mode_changing = true;
 214         /* every 3D add-on will reset this bit-flag when it's done. */
 215         si->engine.threeD.newmode = 0xffffffff;
 216
 217         /* a winner! */
 218         result = B_OK;
 219         /* ensure that INIT_ACCELERANT won't be executed again (copies should be clones) */
 220         si->accelerant_in_use = true;
 221         goto error0;
 222
 223 error1:
 224         /*
 225         Initialization failed after init_common() succeeded, so we need to clean
 226         up before quiting.
 227         */
 228         uninit_common();
 229
 230 error0:
 231         return result;
 232 }
 233
 234 /*
 235 Return the number of bytes required to hold the information required
 236 to clone the device.
 237 */
 238 ssize_t ACCELERANT_CLONE_INFO_SIZE(void) {
 239         /*
 240         Since we're passing the name of the device as the only required
 241         info, return the size of the name buffer
 242         */
 243         return B_OS_NAME_LENGTH; // apsed, was MAX_NV_DEVICE_NAME_LENGTH;
 244 }
 245
 246
 247 /*
 248 Return the info required to clone the device.  void *data points to
 249 a buffer at least ACCELERANT_CLONE_INFO_SIZE() bytes in length.
 250 */
 251 void GET_ACCELERANT_CLONE_INFO(void *data) {
 252         nv_device_name dn;
 253         status_t result;
 254
 255         /* call the kernel driver to get the device name */
 256         dn.magic = NV_PRIVATE_DATA_MAGIC;
 257         /* store the returned info directly into the passed buffer */
 258         dn.name = (char *)data;
 259         result = ioctl(fd, NV_DEVICE_NAME, &dn, sizeof(dn));
 260 }
 261
 262 /*
 263 Initialize a copy of the accelerant as a clone.  void *data points to
 264 a copy of the data returned by GET_ACCELERANT_CLONE_INFO().
 265 */
 266 status_t CLONE_ACCELERANT(void *data)
 267 {
 268         status_t result;
 269         char path[MAXPATHLEN];
 270
 271         /* the data is the device name */
 272         /* Note: the R4 graphics driver kit is in error here (missing trailing '/') */
 273         strcpy(path, "/dev/");
 274         strcat(path, (const char *)data);
 275         /* open the device, the permissions aren't important */
 276         fd = open(path, B_READ_WRITE);
 277         if (fd < 0)
 278         {
 279                 /* we can't use LOG because we didn't get the shared_info struct.. */
 280                 char     fname[64];
 281                 FILE    *myhand = NULL;
 282
 283                 sprintf (fname, "/boot/home/" DRIVER_PREFIX ".accelerant.0.log");
 284                 myhand=fopen(fname,"a+");
 285                 fprintf(myhand, "CLONE_ACCELERANT: couldn't open kerneldriver %s! Aborting.\n", path);
 286                 fclose(myhand);
 287
 288                 /* abort with resultcode from open attempt on kerneldriver */
 289                 result = fd;
 290                 goto error0;
 291         }
 292
 293         /* note that we're a clone accelerant */
 294         accelerantIsClone = 1;
 295
 296         /* call the shared initialization code */
 297         result = init_common(fd);
 298
 299         /* bail out if the common initialization failed */
 300         if (result != B_OK) goto error1;
 301
 302         /* ensure that INIT_ACCELERANT is executed first (i.e. primary accelerant exists) */
 303         if (!(si->accelerant_in_use))
 304         {
 305                 result = B_NOT_ALLOWED;
 306                 goto error2;
 307         }
 308
 309         /* setup CRTC and DAC functions access */
 310         //fixme: setup_virtualized_heads is a problem for clones: needs to be run
 311         //for each clone if the mode is changed!
 312         if (si->ps.secondary_head)
 313                 setup_virtualized_heads(si->crtc_switch_mode);
 314         else
 315                 setup_virtualized_heads(si->ps.crtc2_prim);
 316
 317         /* get shared area for display modes */
 318         result = my_mode_list_area = clone_area(
 319                 DRIVER_PREFIX " cloned display_modes",
 320                 (void **)&my_mode_list,
 321                 B_ANY_ADDRESS,
 322                 B_READ_AREA,
 323                 si->mode_area
 324         );
 325         if (result < B_OK) goto error2;
 326
 327         /* all done */
 328         LOG(4,("CLONE_ACCELERANT: cloning was succesfull.\n"));
 329
 330         result = B_OK;
 331         goto error0;
 332
 333 error2:
 334         /* free up the areas we cloned */
 335         uninit_common();
 336 error1:
 337         /* close the device we opened */
 338         close(fd);
 339 error0:
 340         return result;
 341 }
 342
 343 void UNINIT_ACCELERANT(void)
 344 {
 345         if (accelerantIsClone)
 346         {
 347                 LOG(4,("UNINIT_ACCELERANT: shutting down clone accelerant.\n"));
 348         }
 349         else
 350         {
 351                 LOG(4,("UNINIT_ACCELERANT: shutting down primary accelerant.\n"));
 352
 353                 /* delete benaphores ONLY if we are the primary accelerant */
 354                 DELETE_BEN(si->engine.lock);
 355                 DELETE_BEN(si->overlay.lock);
 356
 357                 /* ensure that INIT_ACCELERANT can be executed again */
 358                 si->accelerant_in_use = false;
 359         }
 360
 361         /* free our mode list area */
 362         delete_area(my_mode_list_area);
 363         /* paranoia */
 364         my_mode_list = 0;
 365         /* release our cloned data */
 366         uninit_common();
 367         /* close the file handle ONLY if we're the clone */
 368         if (accelerantIsClone) close(fd);
 369 }