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  1. /*
  2.  * Copyright (C) 2010 Splitted-Desktop Systems. All Rights Reserved.
  3.  *
  4.  * Permission is hereby granted, free of charge, to any person obtaining a
  5.  * copy of this software and associated documentation files (the
  6.  * "Software"), to deal in the Software without restriction, including
  7.  * without limitation the rights to use, copy, modify, merge, publish,
  8.  * distribute, sub license, and/or sell copies of the Software, and to
  9.  * permit persons to whom the Software is furnished to do so, subject to
  10.  * 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
  17.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  19.  * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
  20.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  21.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  22.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23.  */
  24.  
  25. #include <stdio.h>
  26. #include <stdlib.h>
  27. #include <string.h>
  28. #include <dlfcn.h>
  29. #include <X11/Xlib.h>
  30.  
  31. #define ADL_OK 0
  32. #define ADL_MAX_PATH 256
  33.  
  34. /*
  35.  * Based on public AMD Display Library (ADL) SDK:
  36.  * <http://developer.amd.com/gpu/adlsdk/Pages/default.aspx>
  37.  */
  38. typedef struct AdapterInfo {
  39.     int iSize;
  40.     int iAdapterIndex;
  41.     char strUDID[ADL_MAX_PATH];
  42.     int iBusNumber;
  43.     int iDeviceNumber;
  44.     int iFunctionNumber;
  45.     int iVendorID;
  46.     char strAdapterName[ADL_MAX_PATH];
  47.     char strDisplayName[ADL_MAX_PATH];
  48.     int iPresent;
  49.     int iXScreenNum;
  50.     int iDrvIndex;
  51.     char strXScreenConfigName[ADL_MAX_PATH];
  52. } AdapterInfo, *LPAdapterInfo;
  53.  
  54. typedef struct XScreenInfo {
  55.     int iXScreenNum;
  56.     char strXScreenConfigName[ADL_MAX_PATH];
  57. } XScreenInfo, *LPXScreenInfo;
  58.  
  59. typedef void *(*ADL_MAIN_MALLOC_CALLBACK)(int);
  60. typedef int (*ADL_MAIN_CONTROL_CREATE)(ADL_MAIN_MALLOC_CALLBACK, int);
  61. typedef int (*ADL_MAIN_CONTROL_DESTROY)(void);
  62. typedef int (*ADL_ADAPTER_NUMBEROFADAPTERS_GET)(int *);
  63. typedef int (*ADL_ADAPTER_ADAPTERINFO_GET)(LPAdapterInfo, int);
  64. typedef int (*ADL_ADAPTER_XSCREENINFO_GET)(LPXScreenInfo, int);
  65.  
  66. static void *ADL_Main_Memory_Alloc(int iSize)
  67. {
  68.     return malloc(iSize);
  69. }
  70.  
  71. static void ADL_Main_Memory_Free(void *arg)
  72. {
  73.     void ** const lpBuffer = arg;
  74.  
  75.     if (lpBuffer && *lpBuffer) {
  76.         free(*lpBuffer);
  77.         *lpBuffer = NULL;
  78.     }
  79. }
  80.  
  81. static int get_display_name_length(const char *name)
  82. {
  83.     const char *m;
  84.  
  85.     if (!name)
  86.         return 0;
  87.  
  88.     /* Strip out screen number */
  89.     m = strchr(name, ':');
  90.     if (m) {
  91.         m = strchr(m, '.');
  92.         if (m)
  93.             return m - name;
  94.     }
  95.     return strlen(name);
  96. }
  97.  
  98. static int match_display_name(Display *x11_dpy, const char *display_name)
  99. {
  100.     Display *test_dpy;
  101.     char *test_dpy_name, *x11_dpy_name;
  102.     int test_dpy_namelen, x11_dpy_namelen;
  103.     int m;
  104.  
  105.     test_dpy = XOpenDisplay(display_name);
  106.     if (!test_dpy)
  107.         return 0;
  108.  
  109.     test_dpy_name    = XDisplayString(test_dpy);
  110.     test_dpy_namelen = get_display_name_length(test_dpy_name);
  111.     x11_dpy_name     = XDisplayString(x11_dpy);
  112.     x11_dpy_namelen  = get_display_name_length(x11_dpy_name);
  113.  
  114.     m = (test_dpy_namelen == x11_dpy_namelen &&
  115.          (test_dpy_namelen == 0 ||
  116.           (test_dpy_namelen > 0 &&
  117.            strncmp(test_dpy_name, x11_dpy_name, test_dpy_namelen) == 0)));
  118.  
  119.     XCloseDisplay(test_dpy);
  120.     return m;
  121. }
  122.  
  123. Bool VA_FGLRXGetClientDriverName( Display *dpy, int screen,
  124.     int *ddxDriverMajorVersion, int *ddxDriverMinorVersion,
  125.     int *ddxDriverPatchVersion, char **clientDriverName )
  126. {
  127.     ADL_MAIN_CONTROL_CREATE          ADL_Main_Control_Create;
  128.     ADL_MAIN_CONTROL_DESTROY         ADL_Main_Control_Destroy;
  129.     ADL_ADAPTER_NUMBEROFADAPTERS_GET ADL_Adapter_NumberOfAdapters_Get;
  130.     ADL_ADAPTER_ADAPTERINFO_GET      ADL_Adapter_AdapterInfo_Get;
  131.     ADL_ADAPTER_XSCREENINFO_GET      ADL_Adapter_XScreenInfo_Get;
  132.  
  133.     LPAdapterInfo lpAdapterInfo = NULL;
  134.     LPXScreenInfo lpXScreenInfo = NULL;
  135.     void *libadl_handle = NULL;
  136.     Bool success = False;
  137.     int is_adl_initialized = 0;
  138.     int i, num_adapters, lpAdapterInfo_size, lpXScreenInfo_size;
  139.  
  140.     if (ddxDriverMajorVersion)
  141.         *ddxDriverMajorVersion = 0;
  142.     if (ddxDriverMinorVersion)
  143.         *ddxDriverMinorVersion = 0;
  144.     if (ddxDriverPatchVersion)
  145.         *ddxDriverPatchVersion = 0;
  146.     if (clientDriverName)
  147.         *clientDriverName = NULL;
  148.  
  149.     libadl_handle = dlopen("libatiadlxx.so", RTLD_LAZY|RTLD_GLOBAL);
  150.     if (!libadl_handle)
  151.         goto end;
  152.  
  153.     dlerror();
  154.     ADL_Main_Control_Create = (ADL_MAIN_CONTROL_CREATE)
  155.         dlsym(libadl_handle,"ADL_Main_Control_Create");
  156.     if (dlerror())
  157.         goto end;
  158.  
  159.     ADL_Main_Control_Destroy = (ADL_MAIN_CONTROL_DESTROY)
  160.         dlsym(libadl_handle,"ADL_Main_Control_Destroy");
  161.     if (dlerror())
  162.         goto end;
  163.  
  164.     ADL_Adapter_NumberOfAdapters_Get = (ADL_ADAPTER_NUMBEROFADAPTERS_GET)
  165.         dlsym(libadl_handle,"ADL_Adapter_NumberOfAdapters_Get");
  166.     if (dlerror())
  167.         goto end;
  168.  
  169.     ADL_Adapter_AdapterInfo_Get = (ADL_ADAPTER_ADAPTERINFO_GET)
  170.         dlsym(libadl_handle,"ADL_Adapter_AdapterInfo_Get");
  171.     if (dlerror())
  172.         goto end;
  173.  
  174.     ADL_Adapter_XScreenInfo_Get = (ADL_ADAPTER_XSCREENINFO_GET)
  175.         dlsym(libadl_handle,"ADL_Adapter_XScreenInfo_Get");
  176.     if (dlerror())
  177.         goto end;
  178.  
  179.     if (ADL_Main_Control_Create(ADL_Main_Memory_Alloc, 1) != ADL_OK)
  180.         goto end;
  181.     is_adl_initialized = 1;
  182.  
  183.     if (ADL_Adapter_NumberOfAdapters_Get(&num_adapters) != ADL_OK)
  184.         goto end;
  185.     if (num_adapters <= 0)
  186.         goto end;
  187.  
  188.     lpAdapterInfo_size = num_adapters * sizeof(*lpAdapterInfo);
  189.     lpAdapterInfo = ADL_Main_Memory_Alloc(lpAdapterInfo_size);
  190.     if (!lpAdapterInfo)
  191.         goto end;
  192.     memset(lpAdapterInfo, 0, lpAdapterInfo_size);
  193.  
  194.     for (i = 0; i < num_adapters; i++)
  195.         lpAdapterInfo[i].iSize = sizeof(lpAdapterInfo[i]);
  196.  
  197.     lpXScreenInfo_size = num_adapters * sizeof(*lpXScreenInfo);
  198.     lpXScreenInfo = ADL_Main_Memory_Alloc(lpXScreenInfo_size);
  199.     if (!lpXScreenInfo)
  200.         goto end;
  201.     memset(lpXScreenInfo, 0, lpXScreenInfo_size);
  202.  
  203.     if (ADL_Adapter_AdapterInfo_Get(lpAdapterInfo, lpAdapterInfo_size) != ADL_OK)
  204.         goto end;
  205.  
  206.     if (ADL_Adapter_XScreenInfo_Get(lpXScreenInfo, lpXScreenInfo_size) != ADL_OK)
  207.         goto end;
  208.  
  209.     for (i = 0; i < num_adapters; i++) {
  210.         LPXScreenInfo const lpCurrXScreenInfo = &lpXScreenInfo[i];
  211.         LPAdapterInfo const lpCurrAdapterInfo = &lpAdapterInfo[i];
  212.         if (!lpCurrAdapterInfo->iPresent)
  213.             continue;
  214. #if 0
  215.         printf("Adapter %d:\n", i);
  216.         printf("  iAdapterIndex: %d\n",    lpCurrAdapterInfo->iAdapterIndex);
  217.         printf("  strUDID: '%s'\n",        lpCurrAdapterInfo->strUDID);
  218.         printf("  iBusNumber: %d\n",       lpCurrAdapterInfo->iBusNumber);
  219.         printf("  iDeviceNumber: %d\n",    lpCurrAdapterInfo->iDeviceNumber);
  220.         printf("  iFunctionNumber: %d\n",  lpCurrAdapterInfo->iFunctionNumber);
  221.         printf("  iVendorID: 0x%04x\n",    lpCurrAdapterInfo->iVendorID);
  222.         printf("  strAdapterName: '%s'\n", lpCurrAdapterInfo->strAdapterName);
  223.         printf("  strDisplayName: '%s'\n", lpCurrAdapterInfo->strDisplayName);
  224.         printf("  iPresent: %d\n",         lpCurrAdapterInfo->iPresent);
  225.         printf("  iXScreenNum: %d\n",      lpCurrXScreenInfo->iXScreenNum);
  226. #endif
  227.         if (screen == lpCurrXScreenInfo->iXScreenNum &&
  228.             match_display_name(dpy, lpCurrAdapterInfo->strDisplayName)) {
  229.             if (clientDriverName)
  230.                 *clientDriverName = strdup("fglrx");
  231.             success = True;
  232.             break;
  233.         }
  234.     }
  235.  
  236. end:
  237.     if (lpXScreenInfo)
  238.         ADL_Main_Memory_Free(&lpXScreenInfo);
  239.     if (lpAdapterInfo)
  240.         ADL_Main_Memory_Free(&lpAdapterInfo);
  241.     if (is_adl_initialized)
  242.         ADL_Main_Control_Destroy();
  243.     if (libadl_handle)
  244.         dlclose(libadl_handle);
  245.     return success;
  246. }
  247.