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Member "mesa-20.1.8/src/gallium/auxiliary/pipe-loader/pipe_loader_sw.c" (16 Sep 2020, 7830 Bytes) of package /linux/misc/mesa-20.1.8.tar.xz:


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    1 /**************************************************************************
    2  *
    3  * Copyright 2012 Francisco Jerez
    4  * All Rights Reserved.
    5  *
    6  * Permission is hereby granted, free of charge, to any person obtaining a
    7  * copy of this software and associated documentation files (the
    8  * "Software"), to deal in the Software without restriction, including
    9  * without limitation the rights to use, copy, modify, merge, publish,
   10  * distribute, sub license, and/or sell copies of the Software, and to
   11  * permit persons to whom the Software is furnished to do so, subject to
   12  * the following conditions:
   13  *
   14  * The above copyright notice and this permission notice (including the
   15  * next paragraph) shall be included in all copies or substantial portions
   16  * of the Software.
   17  *
   18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
   21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
   22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
   23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
   24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   25  *
   26  **************************************************************************/
   27 
   28 #ifdef HAVE_PIPE_LOADER_KMS
   29 #include <fcntl.h>
   30 #endif
   31 
   32 #include "pipe_loader_priv.h"
   33 
   34 #include "util/u_memory.h"
   35 #include "util/u_dl.h"
   36 #include "sw/dri/dri_sw_winsys.h"
   37 #include "sw/kms-dri/kms_dri_sw_winsys.h"
   38 #include "sw/null/null_sw_winsys.h"
   39 #include "sw/wrapper/wrapper_sw_winsys.h"
   40 #include "target-helpers/sw_helper_public.h"
   41 #include "state_tracker/drisw_api.h"
   42 #include "state_tracker/sw_driver.h"
   43 #include "state_tracker/sw_winsys.h"
   44 
   45 struct pipe_loader_sw_device {
   46    struct pipe_loader_device base;
   47    const struct sw_driver_descriptor *dd;
   48 #ifndef GALLIUM_STATIC_TARGETS
   49    struct util_dl_library *lib;
   50 #endif
   51    struct sw_winsys *ws;
   52    int fd;
   53 };
   54 
   55 #define pipe_loader_sw_device(dev) ((struct pipe_loader_sw_device *)dev)
   56 
   57 static const struct pipe_loader_ops pipe_loader_sw_ops;
   58 
   59 #ifdef GALLIUM_STATIC_TARGETS
   60 static const struct sw_driver_descriptor driver_descriptors = {
   61    .create_screen = sw_screen_create,
   62    .winsys = {
   63 #ifdef HAVE_PIPE_LOADER_DRI
   64       {
   65          .name = "dri",
   66          .create_winsys = dri_create_sw_winsys,
   67       },
   68 #endif
   69 #ifdef HAVE_PIPE_LOADER_KMS
   70       {
   71          .name = "kms_dri",
   72          .create_winsys = kms_dri_create_winsys,
   73       },
   74 #endif
   75 /**
   76  * XXX: Do not include these two for non autotools builds.
   77  * They don't have neither opencl nor nine, where these are used.
   78  */
   79 #ifndef DROP_PIPE_LOADER_MISC
   80       {
   81          .name = "null",
   82          .create_winsys = null_sw_create,
   83       },
   84       {
   85          .name = "wrapped",
   86          .create_winsys = wrapper_sw_winsys_wrap_pipe_screen,
   87       },
   88 #endif
   89       { 0 },
   90    }
   91 };
   92 #endif
   93 
   94 static bool
   95 pipe_loader_sw_probe_init_common(struct pipe_loader_sw_device *sdev)
   96 {
   97    sdev->base.type = PIPE_LOADER_DEVICE_SOFTWARE;
   98    sdev->base.driver_name = "swrast";
   99    sdev->base.ops = &pipe_loader_sw_ops;
  100    sdev->fd = -1;
  101 
  102 #ifdef GALLIUM_STATIC_TARGETS
  103    sdev->dd = &driver_descriptors;
  104    if (!sdev->dd)
  105       return false;
  106 #else
  107    sdev->lib = pipe_loader_find_module("swrast", PIPE_SEARCH_DIR);
  108    if (!sdev->lib)
  109       return false;
  110 
  111    sdev->dd = (const struct sw_driver_descriptor *)
  112       util_dl_get_proc_address(sdev->lib, "swrast_driver_descriptor");
  113 
  114    if (!sdev->dd){
  115       util_dl_close(sdev->lib);
  116       sdev->lib = NULL;
  117       return false;
  118    }
  119 #endif
  120 
  121    return true;
  122 }
  123 
  124 static void
  125 pipe_loader_sw_probe_teardown_common(struct pipe_loader_sw_device *sdev)
  126 {
  127 #ifndef GALLIUM_STATIC_TARGETS
  128    if (sdev->lib)
  129       util_dl_close(sdev->lib);
  130 #endif
  131 }
  132 
  133 #ifdef HAVE_PIPE_LOADER_DRI
  134 bool
  135 pipe_loader_sw_probe_dri(struct pipe_loader_device **devs, const struct drisw_loader_funcs *drisw_lf)
  136 {
  137    struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
  138    int i;
  139 
  140    if (!sdev)
  141       return false;
  142 
  143    if (!pipe_loader_sw_probe_init_common(sdev))
  144       goto fail;
  145 
  146    for (i = 0; sdev->dd->winsys[i].name; i++) {
  147       if (strcmp(sdev->dd->winsys[i].name, "dri") == 0) {
  148          sdev->ws = sdev->dd->winsys[i].create_winsys(drisw_lf);
  149          break;
  150       }
  151    }
  152    if (!sdev->ws)
  153       goto fail;
  154 
  155    *devs = &sdev->base;
  156    return true;
  157 
  158 fail:
  159    pipe_loader_sw_probe_teardown_common(sdev);
  160    FREE(sdev);
  161    return false;
  162 }
  163 #endif
  164 
  165 #ifdef HAVE_PIPE_LOADER_KMS
  166 bool
  167 pipe_loader_sw_probe_kms(struct pipe_loader_device **devs, int fd)
  168 {
  169    struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
  170    int i;
  171 
  172    if (!sdev)
  173       return false;
  174 
  175    if (!pipe_loader_sw_probe_init_common(sdev))
  176       goto fail;
  177 
  178    if (fd < 0 || (sdev->fd = fcntl(fd, F_DUPFD_CLOEXEC, 3)) < 0)
  179       goto fail;
  180 
  181    for (i = 0; sdev->dd->winsys[i].name; i++) {
  182       if (strcmp(sdev->dd->winsys[i].name, "kms_dri") == 0) {
  183          sdev->ws = sdev->dd->winsys[i].create_winsys(sdev->fd);
  184          break;
  185       }
  186    }
  187    if (!sdev->ws)
  188       goto fail;
  189 
  190    *devs = &sdev->base;
  191    return true;
  192 
  193 fail:
  194    pipe_loader_sw_probe_teardown_common(sdev);
  195    if (sdev->fd != -1)
  196       close(sdev->fd);
  197    FREE(sdev);
  198    return false;
  199 }
  200 #endif
  201 
  202 bool
  203 pipe_loader_sw_probe_null(struct pipe_loader_device **devs)
  204 {
  205    struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
  206    int i;
  207 
  208    if (!sdev)
  209       return false;
  210 
  211    if (!pipe_loader_sw_probe_init_common(sdev))
  212       goto fail;
  213 
  214    for (i = 0; sdev->dd->winsys[i].name; i++) {
  215       if (strcmp(sdev->dd->winsys[i].name, "null") == 0) {
  216          sdev->ws = sdev->dd->winsys[i].create_winsys();
  217          break;
  218       }
  219    }
  220    if (!sdev->ws)
  221       goto fail;
  222 
  223    *devs = &sdev->base;
  224    return true;
  225 
  226 fail:
  227    pipe_loader_sw_probe_teardown_common(sdev);
  228    FREE(sdev);
  229    return false;
  230 }
  231 
  232 int
  233 pipe_loader_sw_probe(struct pipe_loader_device **devs, int ndev)
  234 {
  235    int i = 1;
  236 
  237    if (i <= ndev) {
  238       if (!pipe_loader_sw_probe_null(devs)) {
  239          i--;
  240       }
  241    }
  242 
  243    return i;
  244 }
  245 
  246 boolean
  247 pipe_loader_sw_probe_wrapped(struct pipe_loader_device **dev,
  248                              struct pipe_screen *screen)
  249 {
  250    struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
  251    int i;
  252 
  253    if (!sdev)
  254       return false;
  255 
  256    if (!pipe_loader_sw_probe_init_common(sdev))
  257       goto fail;
  258 
  259    for (i = 0; sdev->dd->winsys[i].name; i++) {
  260       if (strcmp(sdev->dd->winsys[i].name, "wrapped") == 0) {
  261          sdev->ws = sdev->dd->winsys[i].create_winsys(screen);
  262          break;
  263       }
  264    }
  265    if (!sdev->ws)
  266       goto fail;
  267 
  268    *dev = &sdev->base;
  269    return true;
  270 
  271 fail:
  272    pipe_loader_sw_probe_teardown_common(sdev);
  273    FREE(sdev);
  274    return false;
  275 }
  276 
  277 static void
  278 pipe_loader_sw_release(struct pipe_loader_device **dev)
  279 {
  280    UNUSED struct pipe_loader_sw_device *sdev =
  281       pipe_loader_sw_device(*dev);
  282 
  283 #ifndef GALLIUM_STATIC_TARGETS
  284    if (sdev->lib)
  285       util_dl_close(sdev->lib);
  286 #endif
  287 
  288 #ifdef HAVE_PIPE_LOADER_KMS
  289    if (sdev->fd != -1)
  290       close(sdev->fd);
  291 #endif
  292 
  293    pipe_loader_base_release(dev);
  294 }
  295 
  296 static const char *
  297 pipe_loader_sw_get_driconf_xml(struct pipe_loader_device *dev)
  298 {
  299    return NULL;
  300 }
  301 
  302 static struct pipe_screen *
  303 pipe_loader_sw_create_screen(struct pipe_loader_device *dev,
  304                              const struct pipe_screen_config *config)
  305 {
  306    struct pipe_loader_sw_device *sdev = pipe_loader_sw_device(dev);
  307    struct pipe_screen *screen;
  308 
  309    screen = sdev->dd->create_screen(sdev->ws);
  310    if (!screen)
  311       sdev->ws->destroy(sdev->ws);
  312 
  313    return screen;
  314 }
  315 
  316 static const struct pipe_loader_ops pipe_loader_sw_ops = {
  317    .create_screen = pipe_loader_sw_create_screen,
  318    .get_driconf_xml = pipe_loader_sw_get_driconf_xml,
  319    .release = pipe_loader_sw_release
  320 };