src/loader/loader.h

   1 /*
   2  * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors:
  24  *    Rob Clark <robclark@freedesktop.org>
  25  */
  26
  27 #ifndef LOADER_H
  28 #define LOADER_H
  29
  30 #include <stdbool.h>
  31 #include <sys/stat.h>
  32 #include <stddef.h>
  33 #include "mesa_interface.h"
  34
  35 #ifdef __cplusplus
  36 extern "C" {
  37 #endif
  38
  39 /* Helpers to figure out driver and device name, eg. from pci-id, etc. */
  40
  41 int
  42 loader_open_device(const char *);
  43
  44 char *
  45 loader_get_kernel_driver_name(int fd);
  46
  47 int
  48 loader_open_render_node_platform_device(const char * const drivers[],
  49                                         unsigned int n_drivers);
  50
  51 bool
  52 loader_is_device_render_capable(int fd);
  53
  54 char *
  55 loader_get_render_node(dev_t device);
  56
  57 bool
  58 loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id);
  59
  60 char *
  61 loader_get_driver_for_fd(int fd);
  62
  63 void *
  64 loader_open_driver_lib(const char *driver_name,
  65                        const char *lib_suffix,
  66                        const char **search_path_vars,
  67                        const char *default_search_path,
  68                        bool warn_on_fail);
  69
  70 char *
  71 loader_get_device_name_for_fd(int fd);
  72
  73 /* For dri prime gpu offloading this function will take current render fd and possibly
  74  * update it with new prime gpu offloading fd. For dri prime gpu offloading optionally
  75  * this function can return the original fd. Also this function returns true/false based
  76  * on render gpu is different from display gpu.
  77  */
  78
  79 bool
  80 loader_get_user_preferred_fd(int *fd_render_gpu, int *original_fd);
  81
  82 /* for logging.. keep this aligned with egllog.h so we can just use
  83  * _eglLog directly.
  84  */
  85
  86 #define _LOADER_FATAL   0   /* unrecoverable error */
  87 #define _LOADER_WARNING 1   /* recoverable error/problem */
  88 #define _LOADER_INFO    2   /* just useful info */
  89 #define _LOADER_DEBUG   3   /* useful info for debugging */
  90
  91 typedef void loader_logger(int level, const char *fmt, ...);
  92 void
  93 loader_set_logger(loader_logger *logger);
  94
  95 struct dri_extension_match {
  96    /* __DRI_* extension name */
  97    const char *name;
  98
  99    /* Required minimum version in the extension struct */
 100    int version;
 101
 102    /* offset in the data arg at which to store a pointer to the extension */
 103    int offset;
 104
 105    bool optional;
 106 };
 107
 108 bool loader_bind_extensions(void *data,
 109                             const struct dri_extension_match *matches, size_t num_matches,
 110                             const __DRIextension **extensions);
 111
 112 #ifdef __cplusplus
 113 }
 114 #endif
 115
 116 #endif /* LOADER_H */