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  1. /*
  2.  * Copyright (c) 2008 NVIDIA, Corporation
  3.  *
  4.  * Permission is hereby granted, free of charge, to any person obtaining a copy
  5.  * of this software and associated documentation files (the "Software"), to deal
  6.  * in the Software without restriction, including without limitation the rights
  7.  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  8.  * copies of the Software, and to permit persons to whom the Software is
  9.  * 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 THE
  18.  * 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.  
  24. #define _GNU_SOURCE 1
  25. #include <string.h>
  26.  
  27. #define NEED_REPLIES
  28. #include <stdlib.h>
  29. #include <X11/Xlibint.h>
  30. #include <X11/Xutil.h>
  31. #include <X11/extensions/Xext.h>
  32. #include <X11/extensions/extutil.h>
  33. #include "va_nvctrl.h"
  34.  
  35. #define NV_CONTROL_ERRORS 0
  36. #define NV_CONTROL_EVENTS 5
  37. #define NV_CONTROL_NAME "NV-CONTROL"
  38.  
  39. #define NV_CTRL_TARGET_TYPE_X_SCREEN   0
  40. #define NV_CTRL_TARGET_TYPE_GPU        1
  41. #define NV_CTRL_TARGET_TYPE_FRAMELOCK  2
  42. #define NV_CTRL_TARGET_TYPE_VCSC       3 /* Visual Computing System */
  43.  
  44. #define NV_CTRL_STRING_NVIDIA_DRIVER_VERSION                    3  /* R--G */
  45.  
  46. #define X_nvCtrlQueryExtension                      0
  47. #define X_nvCtrlIsNv                                1
  48. #define X_nvCtrlQueryStringAttribute                4
  49.  
  50. typedef struct {
  51.     CARD8 reqType;
  52.     CARD8 nvReqType;
  53.     CARD16 length B16;
  54. } xnvCtrlQueryExtensionReq;
  55. #define sz_xnvCtrlQueryExtensionReq 4
  56.  
  57. typedef struct {
  58.     BYTE type;   /* X_Reply */
  59.     CARD8 padb1;
  60.     CARD16 sequenceNumber B16;
  61.     CARD32 length B32;
  62.     CARD16 major B16;
  63.     CARD16 minor B16;
  64.     CARD32 padl4 B32;
  65.     CARD32 padl5 B32;
  66.     CARD32 padl6 B32;
  67.     CARD32 padl7 B32;
  68.     CARD32 padl8 B32;
  69. } xnvCtrlQueryExtensionReply;
  70. #define sz_xnvCtrlQueryExtensionReply 32
  71.  
  72. typedef struct {
  73.     CARD8 reqType;
  74.     CARD8 nvReqType;
  75.     CARD16 length B16;
  76.     CARD32 screen B32;
  77. } xnvCtrlIsNvReq;
  78. #define sz_xnvCtrlIsNvReq 8
  79.  
  80. typedef struct {
  81.     BYTE type;   /* X_Reply */
  82.     CARD8 padb1;
  83.     CARD16 sequenceNumber B16;
  84.     CARD32 length B32;
  85.     CARD32 isnv B32;
  86.     CARD32 padl4 B32;
  87.     CARD32 padl5 B32;
  88.     CARD32 padl6 B32;
  89.     CARD32 padl7 B32;
  90.     CARD32 padl8 B32;
  91. } xnvCtrlIsNvReply;
  92. #define sz_xnvCtrlIsNvReply 32
  93.  
  94. typedef struct {
  95.     CARD8 reqType;
  96.     CARD8 nvReqType;
  97.     CARD16 length B16;
  98.     CARD16 target_id B16;    /* X screen number or GPU number */
  99.     CARD16 target_type B16;  /* X screen or GPU */
  100.     CARD32 display_mask B32;
  101.     CARD32 attribute B32;
  102. } xnvCtrlQueryStringAttributeReq;
  103. #define sz_xnvCtrlQueryStringAttributeReq 16
  104.  
  105. typedef struct {
  106.     BYTE type;
  107.     BYTE pad0;
  108.     CARD16 sequenceNumber B16;
  109.     CARD32 length B32;
  110.     CARD32 flags B32;
  111.     CARD32 n B32;    /* Length of string */
  112.     CARD32 pad4 B32;
  113.     CARD32 pad5 B32;
  114.     CARD32 pad6 B32;
  115.     CARD32 pad7 B32;
  116. } xnvCtrlQueryStringAttributeReply;
  117. #define sz_xnvCtrlQueryStringAttributeReply 32
  118.  
  119. #define NVCTRL_EXT_NEED_CHECK          (XPointer)(~0)
  120. #define NVCTRL_EXT_NEED_NOTHING        (XPointer)(0)
  121. #define NVCTRL_EXT_NEED_TARGET_SWAP    (XPointer)(1)
  122.  
  123. static XExtensionInfo _nvctrl_ext_info_data;
  124. static XExtensionInfo *nvctrl_ext_info = &_nvctrl_ext_info_data;
  125. static /* const */ char *nvctrl_extension_name = NV_CONTROL_NAME;
  126.  
  127. #define XNVCTRLCheckExtension(dpy,i,val) \
  128.   XextCheckExtension (dpy, i, nvctrl_extension_name, val)
  129. #define XNVCTRLSimpleCheckExtension(dpy,i) \
  130.   XextSimpleCheckExtension (dpy, i, nvctrl_extension_name)
  131.  
  132. static int close_display();
  133. static /* const */ XExtensionHooks nvctrl_extension_hooks = {
  134.     NULL,                               /* create_gc */
  135.     NULL,                               /* copy_gc */
  136.     NULL,                               /* flush_gc */
  137.     NULL,                               /* free_gc */
  138.     NULL,                               /* create_font */
  139.     NULL,                               /* free_font */
  140.     close_display,                      /* close_display */
  141.     NULL,                               /* wire_to_event */
  142.     NULL,                               /* event_to_wire */
  143.     NULL,                               /* error */
  144.     NULL,                               /* error_string */
  145. };
  146.  
  147. static XEXT_GENERATE_FIND_DISPLAY (find_display, nvctrl_ext_info,
  148.                                    nvctrl_extension_name,
  149.                                    &nvctrl_extension_hooks,
  150.                                    NV_CONTROL_EVENTS, NVCTRL_EXT_NEED_CHECK)
  151.  
  152. static XEXT_GENERATE_CLOSE_DISPLAY (close_display, nvctrl_ext_info)
  153.  
  154. static Bool XNVCTRLQueryVersion (Display *dpy, int *major, int *minor);
  155.  
  156. /*
  157.  * NV-CONTROL versions 1.8 and 1.9 pack the target_type and target_id
  158.  * fields in reversed order.  In order to talk to one of these servers,
  159.  * we need to swap these fields.
  160.  */
  161. static void XNVCTRLCheckTargetData(Display *dpy, XExtDisplayInfo *info,
  162.                                    int *target_type, int *target_id)
  163. {
  164.     /* Find out what the server's NV-CONTROL version is and
  165.      * setup for swapping if we need to.
  166.      */
  167.     if (info->data == NVCTRL_EXT_NEED_CHECK) {
  168.         int major, minor;
  169.  
  170.         if (XNVCTRLQueryVersion(dpy, &major, &minor)) {
  171.             if (major == 1 &&
  172.                 (minor == 8 || minor == 9)) {
  173.                 info->data = NVCTRL_EXT_NEED_TARGET_SWAP;
  174.             } else {
  175.                 info->data = NVCTRL_EXT_NEED_NOTHING;
  176.             }
  177.         } else {
  178.             info->data = NVCTRL_EXT_NEED_NOTHING;
  179.         }
  180.     }
  181.  
  182.     /* We need to swap the target_type and target_id */
  183.     if (info->data == NVCTRL_EXT_NEED_TARGET_SWAP) {
  184.         int tmp;
  185.         tmp = *target_type;
  186.         *target_type = *target_id;
  187.         *target_id = tmp;
  188.     }
  189. }
  190.  
  191.  
  192. static Bool XNVCTRLQueryExtension (
  193.     Display *dpy,
  194.     int *event_basep,
  195.     int *error_basep
  196. ){
  197.     XExtDisplayInfo *info = find_display (dpy);
  198.  
  199.     if (XextHasExtension(info)) {
  200.         if (event_basep) *event_basep = info->codes->first_event;
  201.         if (error_basep) *error_basep = info->codes->first_error;
  202.         return True;
  203.     } else {
  204.         return False;
  205.     }
  206. }
  207.  
  208.  
  209. static Bool XNVCTRLQueryVersion (
  210.     Display *dpy,
  211.     int *major,
  212.     int *minor
  213. ){
  214.     XExtDisplayInfo *info = find_display (dpy);
  215.     xnvCtrlQueryExtensionReply rep;
  216.     xnvCtrlQueryExtensionReq   *req;
  217.  
  218.     if(!XextHasExtension(info))
  219.         return False;
  220.  
  221.     XNVCTRLCheckExtension (dpy, info, False);
  222.  
  223.     LockDisplay (dpy);
  224.     GetReq (nvCtrlQueryExtension, req);
  225.     req->reqType = info->codes->major_opcode;
  226.     req->nvReqType = X_nvCtrlQueryExtension;
  227.     if (!_XReply (dpy, (xReply *) &rep, 0, xTrue)) {
  228.         UnlockDisplay (dpy);
  229.         SyncHandle ();
  230.         return False;
  231.     }
  232.     if (major) *major = rep.major;
  233.     if (minor) *minor = rep.minor;
  234.     UnlockDisplay (dpy);
  235.     SyncHandle ();
  236.     return True;
  237. }
  238.  
  239.  
  240. static Bool XNVCTRLIsNvScreen (
  241.     Display *dpy,
  242.     int screen
  243. ){
  244.     XExtDisplayInfo *info = find_display (dpy);
  245.     xnvCtrlIsNvReply rep;
  246.     xnvCtrlIsNvReq   *req;
  247.     Bool isnv;
  248.  
  249.     if(!XextHasExtension(info))
  250.         return False;
  251.  
  252.     XNVCTRLCheckExtension (dpy, info, False);
  253.  
  254.     LockDisplay (dpy);
  255.     GetReq (nvCtrlIsNv, req);
  256.     req->reqType = info->codes->major_opcode;
  257.     req->nvReqType = X_nvCtrlIsNv;
  258.     req->screen = screen;
  259.     if (!_XReply (dpy, (xReply *) &rep, 0, xTrue)) {
  260.         UnlockDisplay (dpy);
  261.         SyncHandle ();
  262.         return False;
  263.     }
  264.     isnv = rep.isnv;
  265.     UnlockDisplay (dpy);
  266.     SyncHandle ();
  267.     return isnv;
  268. }
  269.  
  270.  
  271. static Bool XNVCTRLQueryTargetStringAttribute (
  272.     Display *dpy,
  273.     int target_type,
  274.     int target_id,
  275.     unsigned int display_mask,
  276.     unsigned int attribute,
  277.     char **ptr
  278. ){
  279.     XExtDisplayInfo *info = find_display (dpy);
  280.     xnvCtrlQueryStringAttributeReply rep;
  281.     xnvCtrlQueryStringAttributeReq   *req;
  282.     Bool exists;
  283.     int length, numbytes, slop;
  284.  
  285.     if (!ptr) return False;
  286.  
  287.     if(!XextHasExtension(info))
  288.         return False;
  289.  
  290.     XNVCTRLCheckExtension (dpy, info, False);
  291.     XNVCTRLCheckTargetData(dpy, info, &target_type, &target_id);
  292.  
  293.     LockDisplay (dpy);
  294.     GetReq (nvCtrlQueryStringAttribute, req);
  295.     req->reqType = info->codes->major_opcode;
  296.     req->nvReqType = X_nvCtrlQueryStringAttribute;
  297.     req->target_type = target_type;
  298.     req->target_id = target_id;
  299.     req->display_mask = display_mask;
  300.     req->attribute = attribute;
  301.     if (!_XReply (dpy, (xReply *) &rep, 0, False)) {
  302.         UnlockDisplay (dpy);
  303.         SyncHandle ();
  304.         return False;
  305.     }
  306.     length = rep.length;
  307.     numbytes = rep.n;
  308.     slop = numbytes & 3;
  309.     *ptr = (char *) Xmalloc(numbytes);
  310.     if (! *ptr) {
  311.         _XEatData(dpy, length);
  312.         UnlockDisplay (dpy);
  313.         SyncHandle ();
  314.         return False;
  315.     } else {
  316.         _XRead(dpy, (char *) *ptr, numbytes);
  317.         if (slop) _XEatData(dpy, 4-slop);
  318.     }
  319.     exists = rep.flags;
  320.     UnlockDisplay (dpy);
  321.     SyncHandle ();
  322.     return exists;
  323. }
  324.  
  325. static Bool XNVCTRLQueryStringAttribute (
  326.     Display *dpy,
  327.     int screen,
  328.     unsigned int display_mask,
  329.     unsigned int attribute,
  330.     char **ptr
  331. ){
  332.     return XNVCTRLQueryTargetStringAttribute(dpy, NV_CTRL_TARGET_TYPE_X_SCREEN,
  333.                                              screen, display_mask,
  334.                                              attribute, ptr);
  335. }
  336.  
  337.  
  338. Bool VA_NVCTRLQueryDirectRenderingCapable( Display *dpy, int screen,
  339.     Bool *isCapable )
  340. {
  341.     int event_base;
  342.     int error_base;
  343.  
  344.     if (isCapable)
  345.         *isCapable = False;
  346.  
  347.     if (!XNVCTRLQueryExtension(dpy, &event_base, &error_base))
  348.         return False;
  349.  
  350.     if (isCapable && XNVCTRLIsNvScreen(dpy, screen))
  351.         *isCapable = True;
  352.  
  353.     return True;
  354. }
  355.  
  356. Bool VA_NVCTRLGetClientDriverName( Display *dpy, int screen,
  357.     int *ddxDriverMajorVersion, int *ddxDriverMinorVersion,
  358.     int *ddxDriverPatchVersion, char **clientDriverName )
  359. {
  360.     if (ddxDriverMajorVersion)
  361.         *ddxDriverMajorVersion = 0;
  362.     if (ddxDriverMinorVersion)
  363.         *ddxDriverMinorVersion = 0;
  364.     if (ddxDriverPatchVersion)
  365.         *ddxDriverPatchVersion = 0;
  366.     if (clientDriverName)
  367.         *clientDriverName = NULL;
  368.  
  369.     char *nvidia_driver_version = NULL;
  370.     if (!XNVCTRLQueryStringAttribute(dpy, screen, 0, NV_CTRL_STRING_NVIDIA_DRIVER_VERSION, &nvidia_driver_version))
  371.         return False;
  372.  
  373.     char *end, *str = nvidia_driver_version;
  374.     unsigned long v = strtoul(str, &end, 10);
  375.     if (end && end != str) {
  376.         if (ddxDriverMajorVersion)
  377.             *ddxDriverMajorVersion = v;
  378.         if (*(str = end) == '.') {
  379.             v = strtoul(str + 1, &end, 10);
  380.             if (end && end != str && (*end == '.' || *end == '\0')) {
  381.                 if (ddxDriverMinorVersion)
  382.                     *ddxDriverMinorVersion = v;
  383.                 if (*(str = end) == '.') {
  384.                     v = strtoul(str + 1, &end, 10);
  385.                     if (end && end != str && *end == '\0') {
  386.                         if (ddxDriverPatchVersion)
  387.                             *ddxDriverPatchVersion = v;
  388.                     }
  389.                 }
  390.             }
  391.         }
  392.     }
  393.     Xfree(nvidia_driver_version);
  394.  
  395.     if (clientDriverName)
  396.         *clientDriverName = strdup("nvidia");
  397.  
  398.     return True;
  399. }
  400.