src/mesa/drivers/dri/unichrome/via_screen.c

   1 /*
   2  * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
   3  * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the
  13  * next paragraph) shall be included in all copies or substantial portions
  14  * of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #include <stdio.h>
  26
  27 #include "utils.h"
  28 #include "dri_util.h"
  29 #include "glheader.h"
  30 #include "context.h"
  31 #include "framebuffer.h"
  32 #include "renderbuffer.h"
  33 #include "matrix.h"
  34 #include "simple_list.h"
  35 #include "vblank.h"
  36
  37 #include "via_state.h"
  38 #include "via_tex.h"
  39 #include "via_span.h"
  40 #include "via_tris.h"
  41 #include "via_ioctl.h"
  42 #include "via_screen.h"
  43 #include "via_fb.h"
  44 #include "via_dri.h"
  45
  46 #include "GL/internal/dri_interface.h"
  47 #include "drirenderbuffer.h"
  48
  49 #include "xmlpool.h"
  50
  51 const char __driConfigOptions[] =
  52 DRI_CONF_BEGIN
  53     DRI_CONF_SECTION_PERFORMANCE
  54         DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
  55     DRI_CONF_SECTION_END
  56     DRI_CONF_SECTION_QUALITY
  57         DRI_CONF_EXCESS_MIPMAP(false)
  58     DRI_CONF_SECTION_END
  59     DRI_CONF_SECTION_DEBUG
  60         DRI_CONF_NO_RAST(false)
  61     DRI_CONF_SECTION_END
  62 DRI_CONF_END;
  63 static const GLuint __driNConfigOptions = 3;
  64
  65 extern const struct dri_extension card_extensions[];
  66
  67 static int getSwapInfo( __DRIdrawablePrivate *dPriv, __DRIswapInfo * sInfo );
  68
  69 static drmBufMapPtr via_create_empty_buffers(void)
  70 {
  71     drmBufMapPtr retval;
  72
  73     retval = (drmBufMapPtr)MALLOC(sizeof(drmBufMap));
  74     if (retval == NULL) return NULL;
  75     memset(retval, 0, sizeof(drmBufMap));
  76
  77     retval->list = (drmBufPtr)MALLOC(sizeof(drmBuf) * VIA_DMA_BUF_NR);
  78     if (retval->list == NULL) {
  79        FREE(retval);
  80        return NULL;
  81     }
  82     memset(retval->list, 0, sizeof(drmBuf) * VIA_DMA_BUF_NR);
  83     return retval;
  84 }
  85
  86 static void via_free_empty_buffers( drmBufMapPtr bufs )
  87 {
  88    if (bufs && bufs->list)
  89       FREE(bufs->list);
  90
  91    if (bufs)
  92       FREE(bufs);
  93 }
  94
  95
  96 static GLboolean
  97 viaInitDriver(__DRIscreenPrivate *sPriv)
  98 {
  99     viaScreenPrivate *viaScreen;
 100     VIADRIPtr gDRIPriv = (VIADRIPtr)sPriv->pDevPriv;
 101     PFNGLXSCRENABLEEXTENSIONPROC glx_enable_extension =
 102       (PFNGLXSCRENABLEEXTENSIONPROC) (*dri_interface->getProcAddress("glxEnableExtension"));
 103     void * const psc = sPriv->psc->screenConfigs;
 104
 105     if (sPriv->devPrivSize != sizeof(VIADRIRec)) {
 106       fprintf(stderr,"\nERROR!  sizeof(VIADRIRec) does not match passed size from device driver\n");
 107       return GL_FALSE;
 108     }
 109
 110     /* Allocate the private area */
 111     viaScreen = (viaScreenPrivate *) CALLOC(sizeof(viaScreenPrivate));
 112     if (!viaScreen) {
 113         __driUtilMessage("viaInitDriver: alloc viaScreenPrivate struct failed");
 114         return GL_FALSE;
 115     }
 116
 117     /* parse information in __driConfigOptions */
 118     driParseOptionInfo (&viaScreen->optionCache,
 119                         __driConfigOptions, __driNConfigOptions);
 120
 121
 122     viaScreen->driScrnPriv = sPriv;
 123     sPriv->private = (void *)viaScreen;
 124
 125     viaScreen->deviceID = gDRIPriv->deviceID;
 126     viaScreen->width = gDRIPriv->width;
 127     viaScreen->height = gDRIPriv->height;
 128     viaScreen->mem = gDRIPriv->mem;
 129     viaScreen->bitsPerPixel = gDRIPriv->bytesPerPixel * 8;
 130     viaScreen->bytesPerPixel = gDRIPriv->bytesPerPixel;
 131     viaScreen->fbOffset = 0;
 132     viaScreen->fbSize = gDRIPriv->fbSize;
 133     viaScreen->irqEnabled = gDRIPriv->irqEnabled;
 134
 135     if (VIA_DEBUG & DEBUG_DRI) {
 136         fprintf(stderr, "deviceID = %08x\n", viaScreen->deviceID);
 137         fprintf(stderr, "width = %08x\n", viaScreen->width);
 138         fprintf(stderr, "height = %08x\n", viaScreen->height);
 139         fprintf(stderr, "cpp = %08x\n", viaScreen->cpp);
 140         fprintf(stderr, "fbOffset = %08x\n", viaScreen->fbOffset);
 141     }
 142
 143     viaScreen->bufs = via_create_empty_buffers();
 144     if (viaScreen->bufs == NULL) {
 145         __driUtilMessage("viaInitDriver: via_create_empty_buffers() failed");
 146         FREE(viaScreen);
 147         return GL_FALSE;
 148     }
 149
 150     if (drmMap(sPriv->fd,
 151                gDRIPriv->regs.handle,
 152                gDRIPriv->regs.size,
 153                &viaScreen->reg) != 0) {
 154         FREE(viaScreen);
 155         sPriv->private = NULL;
 156         __driUtilMessage("viaInitDriver: drmMap regs failed");
 157         return GL_FALSE;
 158     }
 159
 160     if (gDRIPriv->agp.size) {
 161         if (drmMap(sPriv->fd,
 162                    gDRIPriv->agp.handle,
 163                    gDRIPriv->agp.size,
 164                    (drmAddress *)&viaScreen->agpLinearStart) != 0) {
 165             drmUnmap(viaScreen->reg, gDRIPriv->regs.size);
 166             FREE(viaScreen);
 167             sPriv->private = NULL;
 168             __driUtilMessage("viaInitDriver: drmMap agp failed");
 169             return GL_FALSE;
 170         }
 171
 172         viaScreen->agpBase = drmAgpBase(sPriv->fd);
 173     } else
 174         viaScreen->agpLinearStart = 0;
 175
 176     viaScreen->sareaPrivOffset = gDRIPriv->sarea_priv_offset;
 177
 178     if ( glx_enable_extension != NULL ) {
 179        if ( viaScreen->irqEnabled ) {
 180           (*glx_enable_extension)( psc, "GLX_SGI_swap_control" );
 181           (*glx_enable_extension)( psc, "GLX_SGI_video_sync" );
 182           (*glx_enable_extension)( psc, "GLX_MESA_swap_control" );
 183        }
 184
 185        (*glx_enable_extension)( psc, "GLX_SGI_make_current_read" );
 186        (*glx_enable_extension)( psc, "GLX_MESA_swap_frame_usage" );
 187     }
 188
 189     return GL_TRUE;
 190 }
 191
 192 static void
 193 viaDestroyScreen(__DRIscreenPrivate *sPriv)
 194 {
 195     viaScreenPrivate *viaScreen = (viaScreenPrivate *)sPriv->private;
 196     VIADRIPtr gDRIPriv = (VIADRIPtr)sPriv->pDevPriv;
 197
 198     drmUnmap(viaScreen->reg, gDRIPriv->regs.size);
 199     if (gDRIPriv->agp.size)
 200         drmUnmap(viaScreen->agpLinearStart, gDRIPriv->agp.size);
 201
 202     via_free_empty_buffers(viaScreen->bufs);
 203
 204     driDestroyOptionInfo(&viaScreen->optionCache);
 205
 206     FREE(viaScreen);
 207     sPriv->private = NULL;
 208 }
 209
 210
 211 static GLboolean
 212 viaCreateBuffer(__DRIscreenPrivate *driScrnPriv,
 213                 __DRIdrawablePrivate *driDrawPriv,
 214                 const __GLcontextModes *mesaVis,
 215                 GLboolean isPixmap)
 216 {
 217     viaScreenPrivate *screen = (viaScreenPrivate *) driScrnPriv->private;
 218
 219     GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 220                            mesaVis->depthBits != 24);
 221     GLboolean swAccum = mesaVis->accumRedBits > 0;
 222
 223     if (isPixmap) {
 224        /* KW: This needs work, disabled for now:
 225         */
 226 #if 0
 227         driDrawPriv->driverPrivate = (void *)
 228             _mesa_create_framebuffer(mesaVis,
 229                                      GL_FALSE,  /* software depth buffer? */
 230                                      swStencil,
 231                                      mesaVis->accumRedBits > 0,
 232                                      GL_FALSE   /* s/w alpha planes */);
 233
 234         return (driDrawPriv->driverPrivate != NULL);
 235 #endif
 236         return GL_FALSE;
 237     }
 238     else {
 239       struct gl_framebuffer *fb = _mesa_create_framebuffer(mesaVis);
 240
 241       /* The front color, back color and depth renderbuffers are
 242        * set up later in calculate_buffer_parameters().
 243        * Only create/connect software-based buffers here.
 244        */
 245
 246 #if 000
 247       /* This code _should_ be put to use.  We have to move the
 248        * viaRenderbuffer members out of the via_context structure.
 249        * Those members should just be the renderbuffers hanging off the
 250        * gl_framebuffer object.
 251        */
 252       /* XXX check/fix the offset/pitch parameters! */
 253       {
 254          driRenderbuffer *frontRb
 255             = driNewRenderbuffer(GL_RGBA, NULL,
 256                                  screen->bytesPerPixel,
 257                                  0, screen->width, driDrawPriv);
 258          viaSetSpanFunctions(frontRb, mesaVis);
 259          _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontRb->Base);
 260       }
 261
 262       if (mesaVis->doubleBufferMode) {
 263          driRenderbuffer *backRb
 264             = driNewRenderbuffer(GL_RGBA, NULL,
 265                                  screen->bytesPerPixel,
 266                                  0, screen->width, driDrawPriv);
 267          viaSetSpanFunctions(backRb, mesaVis);
 268          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backRb->Base);
 269       }
 270
 271       if (mesaVis->depthBits == 16) {
 272          driRenderbuffer *depthRb
 273             = driNewRenderbuffer(GL_DEPTH_COMPONENT16, NULL,
 274                                  screen->bytesPerPixel,
 275                                  0, screen->width, driDrawPriv);
 276          viaSetSpanFunctions(depthRb, mesaVis);
 277          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 278       }
 279       else if (mesaVis->depthBits == 24) {
 280          driRenderbuffer *depthRb
 281             = driNewRenderbuffer(GL_DEPTH_COMPONENT24, NULL,
 282                                  screen->bytesPerPixel,
 283                                  0, screen->width, driDrawPriv);
 284          viaSetSpanFunctions(depthRb, mesaVis);
 285          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 286       }
 287       else if (mesaVis->depthBits == 32) {
 288          driRenderbuffer *depthRb
 289             = driNewRenderbuffer(GL_DEPTH_COMPONENT32, NULL,
 290                                  screen->bytesPerPixel,
 291                                  0, screen->width, driDrawPriv);
 292          viaSetSpanFunctions(depthRb, mesaVis);
 293          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 294       }
 295
 296       if (mesaVis->stencilBits > 0 && !swStencil) {
 297          driRenderbuffer *stencilRb
 298             = driNewRenderbuffer(GL_STENCIL_INDEX8_EXT, NULL,
 299                                  screen->bytesPerPixel,
 300                                  0, screen->width, driDrawPriv);
 301          viaSetSpanFunctions(stencilRb, mesaVis);
 302          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &stencilRb->Base);
 303       }
 304 #endif
 305
 306       _mesa_add_soft_renderbuffers(fb,
 307                                    GL_FALSE, /* color */
 308                                    GL_FALSE, /* depth */
 309                                    swStencil,
 310                                    swAccum,
 311                                    GL_FALSE, /* alpha */
 312                                    GL_FALSE /* aux */);
 313       driDrawPriv->driverPrivate = (void *) fb;
 314
 315       return (driDrawPriv->driverPrivate != NULL);
 316    }
 317 }
 318
 319
 320 static void
 321 viaDestroyBuffer(__DRIdrawablePrivate *driDrawPriv)
 322 {
 323    _mesa_unreference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)));
 324 }
 325
 326
 327
 328 static struct __DriverAPIRec viaAPI = {
 329    .InitDriver      = viaInitDriver,
 330    .DestroyScreen   = viaDestroyScreen,
 331    .CreateContext   = viaCreateContext,
 332    .DestroyContext  = viaDestroyContext,
 333    .CreateBuffer    = viaCreateBuffer,
 334    .DestroyBuffer   = viaDestroyBuffer,
 335    .SwapBuffers     = viaSwapBuffers,
 336    .MakeCurrent     = viaMakeCurrent,
 337    .UnbindContext   = viaUnbindContext,
 338    .GetSwapInfo     = getSwapInfo,
 339    .GetMSC          = driGetMSC32,
 340    .WaitForMSC      = driWaitForMSC32,
 341    .WaitForSBC      = NULL,
 342    .SwapBuffersMSC  = NULL
 343 };
 344
 345
 346 static __GLcontextModes *
 347 viaFillInModes( unsigned pixel_bits, GLboolean have_back_buffer )
 348 {
 349     __GLcontextModes * modes;
 350     __GLcontextModes * m;
 351     unsigned num_modes;
 352     const unsigned back_buffer_factor = (have_back_buffer) ? 2 : 1;
 353     GLenum fb_format;
 354     GLenum fb_type;
 355
 356     /* Right now GLX_SWAP_COPY_OML isn't supported, but it would be easy
 357      * enough to add support.  Basically, if a context is created with an
 358      * fbconfig where the swap method is GLX_SWAP_COPY_OML, pageflipping
 359      * will never be used.
 360      */
 361     static const GLenum back_buffer_modes[] = {
 362         GLX_NONE, GLX_SWAP_UNDEFINED_OML /*, GLX_SWAP_COPY_OML */
 363     };
 364
 365     /* The 32-bit depth-buffer mode isn't supported yet, so don't actually
 366      * enable it.
 367      */
 368     static const u_int8_t depth_bits_array[4]   = { 0, 16, 24, 32 };
 369     static const u_int8_t stencil_bits_array[4] = { 0,  0,  8,  0 };
 370     const unsigned depth_buffer_factor = 3;
 371
 372
 373     num_modes = depth_buffer_factor * back_buffer_factor * 4;
 374
 375     if ( pixel_bits == 16 ) {
 376         fb_format = GL_RGB;
 377         fb_type = GL_UNSIGNED_SHORT_5_6_5;
 378     }
 379     else {
 380         fb_format = GL_BGRA;
 381         fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 382     }
 383
 384     modes = (*dri_interface->createContextModes)( num_modes, sizeof( __GLcontextModes ) );
 385     m = modes;
 386     if ( ! driFillInModes( & m, fb_format, fb_type,
 387                            depth_bits_array, stencil_bits_array,
 388                            depth_buffer_factor,
 389                            back_buffer_modes, back_buffer_factor,
 390                            GLX_TRUE_COLOR ) ) {
 391         fprintf( stderr, "[%s:%u] Error creating FBConfig!\n",
 392                  __func__, __LINE__ );
 393         return NULL;
 394     }
 395
 396     if ( ! driFillInModes( & m, fb_format, fb_type,
 397                            depth_bits_array, stencil_bits_array,
 398                            depth_buffer_factor,
 399                            back_buffer_modes, back_buffer_factor,
 400                            GLX_DIRECT_COLOR ) ) {
 401         fprintf( stderr, "[%s:%u] Error creating FBConfig!\n",
 402                  __func__, __LINE__ );
 403         return NULL;
 404     }
 405
 406     return modes;
 407 }
 408
 409
 410 /**
 411  * This is the bootstrap function for the driver.  libGL supplies all of the
 412  * requisite information about the system, and the driver initializes itself.
 413  * This routine also fills in the linked list pointed to by \c driver_modes
 414  * with the \c __GLcontextModes that the driver can support for windows or
 415  * pbuffers.
 416  *
 417  * \return A pointer to a \c __DRIscreenPrivate on success, or \c NULL on
 418  *         failure.
 419  */
 420 PUBLIC
 421 void * __driCreateNewScreen_20050727( __DRInativeDisplay *dpy, int scrn,
 422                              __DRIscreen *psc,
 423                              const __GLcontextModes * modes,
 424                              const __DRIversion * ddx_version,
 425                              const __DRIversion * dri_version,
 426                              const __DRIversion * drm_version,
 427                              const __DRIframebuffer * frame_buffer,
 428                              drmAddress pSAREA, int fd,
 429                              int internal_api_version,
 430                              const __DRIinterfaceMethods * interface,
 431                              __GLcontextModes ** driver_modes )
 432
 433 {
 434    __DRIscreenPrivate *psp;
 435    static const __DRIversion ddx_expected = { VIA_DRIDDX_VERSION_MAJOR,
 436                                               VIA_DRIDDX_VERSION_MINOR,
 437                                               VIA_DRIDDX_VERSION_PATCH };
 438    static const __DRIversion dri_expected = { 4, 0, 0 };
 439    static const __DRIversion drm_expected = { 2, 3, 0 };
 440    static const char *driver_name = "Unichrome";
 441
 442    dri_interface = interface;
 443
 444    if ( ! driCheckDriDdxDrmVersions2( driver_name,
 445                                       dri_version, & dri_expected,
 446                                       ddx_version, & ddx_expected,
 447                                       drm_version, & drm_expected) ) {
 448       return NULL;
 449    }
 450
 451    psp = __driUtilCreateNewScreen(dpy, scrn, psc, NULL,
 452                                   ddx_version, dri_version, drm_version,
 453                                   frame_buffer, pSAREA, fd,
 454                                   internal_api_version, &viaAPI);
 455    if ( psp != NULL ) {
 456       VIADRIPtr dri_priv = (VIADRIPtr) psp->pDevPriv;
 457       *driver_modes = viaFillInModes( dri_priv->bytesPerPixel * 8,
 458                                       GL_TRUE );
 459
 460       /* Calling driInitExtensions here, with a NULL context pointer, does not actually
 461        * enable the extensions.  It just makes sure that all the dispatch offsets for all
 462        * the extensions that *might* be enables are known.  This is needed because the
 463        * dispatch offsets need to be known when _mesa_context_create is called, but we can't
 464        * enable the extensions until we have a context pointer.
 465        *
 466        * Hello chicken.  Hello egg.  How are you two today?
 467        */
 468       driInitExtensions( NULL, card_extensions, GL_FALSE );
 469    }
 470
 471    return (void *) psp;
 472 }
 473
 474
 475 /**
 476  * Get information about previous buffer swaps.
 477  */
 478 static int
 479 getSwapInfo( __DRIdrawablePrivate *dPriv, __DRIswapInfo * sInfo )
 480 {
 481    struct via_context *vmesa;
 482
 483    if ( (dPriv == NULL) || (dPriv->driContextPriv == NULL)
 484         || (dPriv->driContextPriv->driverPrivate == NULL)
 485         || (sInfo == NULL) ) {
 486       return -1;
 487    }
 488
 489    vmesa = (struct via_context *) dPriv->driContextPriv->driverPrivate;
 490    sInfo->swap_count = vmesa->swap_count;
 491    sInfo->swap_ust = vmesa->swap_ust;
 492    sInfo->swap_missed_count = vmesa->swap_missed_count;
 493
 494    sInfo->swap_missed_usage = (sInfo->swap_missed_count != 0)
 495        ? driCalculateSwapUsage( dPriv, 0, vmesa->swap_missed_ust )
 496        : 0.0;
 497
 498    return 0;
 499 }