More memory map fixes !!! This time, we add a way to get the DRM kernel

    module version early, in order to properly limit the framebuffer size
    when a module that doesn't support the new map is loaded. That will
    improve backward compatibility. I also made the minimum required kernel
    module version 1.3 which hopefully shouldn't be a problem for anybody,
    and cleaned up the ordering in which we test for DRM version to enable
    features

1 files changed, 129 insertions, 131 deletions

diff --git a/src/radeon_dri.c b/src/radeon_dri.c
index 544bca24..f9e7c9a3 100644
--- a/src/radeon_dri.c
+++ b/src/radeon_dri.c
@@ -1092,7 +1092,7 @@ static void RADEONDRIGartHeapInit(RADEONInfoPtr info, ScreenPtr pScreen)
     drmRadeonMemInitHeap drmHeap;
 
     /* Start up the simple memory manager for GART space */
-    if (info->drmMinor >= 6) {
+    if (info->pKernelDRMVersion->version_minor >= 6) {
 	drmHeap.region = RADEON_MEM_REGION_GART;
 	drmHeap.start  = 0;
 	drmHeap.size   = info->gartTexMapSize;
@@ -1109,7 +1109,7 @@ static void RADEONDRIGartHeapInit(RADEONInfoPtr info, ScreenPtr pScreen)
     } else {
 	xf86DrvMsg(pScreen->myNum, X_INFO,
 		   "[drm] Kernel module too old (1.%d) for GART heap manager\n",
-		   info->drmMinor);
+		   info->pKernelDRMVersion->version_minor);
     }
 }
 
@@ -1193,19 +1193,14 @@ static void RADEONDRICPInit(ScrnInfoPtr pScrn)
 }
 
 
-/* Initialize the screen-specific data structures for the DRI and the
- * Radeon.  This is the main entry point to the device-specific
- * initialization code.  It calls device-independent DRI functions to
- * create the DRI data structures and initialize the DRI state.
- */
-Bool RADEONDRIScreenInit(ScreenPtr pScreen)
+/* Get the DRM version and do some basic useability checks of DRI */
+Bool RADEONDRIGetVersion(ScrnInfoPtr pScrn)
 {
-    ScrnInfoPtr    pScrn   = xf86Screens[pScreen->myNum];
     RADEONInfoPtr  info    = RADEONPTR(pScrn);
-    DRIInfoPtr     pDRIInfo;
-    RADEONDRIPtr   pRADEONDRI;
-    int            major, minor, patch;
-    drmVersionPtr  version;
+    int            major, minor, patch, fd;
+    int		   req_minor, req_patch;
+    char           *busId;
+    drmVersionPtr  libVersion;
 
     /* Check that the GLX, DRI, and DRM modules have been loaded by testing
      * for known symbols in each module.
@@ -1213,16 +1208,17 @@ Bool RADEONDRIScreenInit(ScreenPtr pScreen)
     if (!xf86LoaderCheckSymbol("GlxSetVisualConfigs")) return FALSE;
     if (!xf86LoaderCheckSymbol("drmAvailable"))        return FALSE;
     if (!xf86LoaderCheckSymbol("DRIQueryVersion")) {
-      xf86DrvMsg(pScreen->myNum, X_ERROR,
-		 "[dri] RADEONDRIScreenInit failed (libdri.a too old)\n");
+      xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+		 "[dri] RADEONDRIGetVersion failed (libdri.a too old)\n"
+		 "[dri] Disabling DRI.\n");
       return FALSE;
     }
 
     /* Check the DRI version */
     DRIQueryVersion(&major, &minor, &patch);
     if (major != DRIINFO_MAJOR_VERSION || minor < DRIINFO_MINOR_VERSION) {
-	xf86DrvMsg(pScreen->myNum, X_ERROR,
-		   "[dri] RADEONDRIScreenInit failed because of a version "
+	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+		   "[dri] RADEONDRIGetVersion failed because of a version "
 		   "mismatch.\n"
 		   "[dri] libdri version is %d.%d.%d but version %d.%d.x is "
 		   "needed.\n"
@@ -1232,6 +1228,118 @@ Bool RADEONDRIScreenInit(ScreenPtr pScreen)
 	return FALSE;
     }
 
+    /* Check the lib version */
+    if (xf86LoaderCheckSymbol("drmGetLibVersion"))
+	info->pLibDRMVersion = drmGetLibVersion(info->drmFD);
+    if (info->pLibDRMVersion == NULL) {
+	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+		   "[dri] RADEONDRIGetVersion failed because libDRM is really "
+		   "way to old to even get a version number out of it.\n"
+		   "[dri] Disabling DRI.\n");
+	return FALSE;
+    }
+    if (info->pLibDRMVersion->version_major != 1 ||
+	info->pLibDRMVersion->version_minor < 2) {
+	    /* incompatible drm library version */
+	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+		   "[dri] RADEONDRIGetVersion failed because of a "
+		   "version mismatch.\n"
+		   "[dri] libdrm.a module version is %d.%d.%d but "
+		   "version 1.2.x is needed.\n"
+		   "[dri] Disabling DRI.\n",
+		   info->pLibDRMVersion->version_major,
+		   info->pLibDRMVersion->version_minor,
+		   info->pLibDRMVersion->version_patchlevel);
+	drmFreeVersion(info->pLibDRMVersion);
+	info->pLibDRMVersion = NULL;
+	return FALSE;
+    }
+
+    /* Create a bus Id */
+    if (xf86LoaderCheckSymbol("DRICreatePCIBusID")) {
+	busId = DRICreatePCIBusID(info->PciInfo);
+    } else {
+	busId = xalloc(64);
+	sprintf(busId,
+		"PCI:%d:%d:%d",
+		info->PciInfo->bus,
+		info->PciInfo->device,
+		info->PciInfo->func);
+    }
+
+    /* Low level DRM open */
+    fd = drmOpen(RADEON_DRIVER_NAME, busId);
+    xfree(busId);
+    if (fd < 0) {
+	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+		   "[dri] RADEONDRIGetVersion failed to open the DRM\n"
+		   "[dri] Disabling DRI.\n");
+	return FALSE;
+    }
+
+    /* Get DRM version & close DRM */
+    info->pKernelDRMVersion = drmGetVersion(fd);
+    drmClose(fd);
+    if (info->pKernelDRMVersion == NULL) {
+	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+		   "[dri] RADEONDRIGetVersion failed to get the DRM version\n"
+		   "[dri] Disabling DRI.\n");
+	return FALSE;
+    }
+
+    /* Now check if we qualify */
+    if (info->IsIGP) {
+        req_minor = 10;
+	req_patch = 0;
+    } else if (info->ChipFamily >= CHIP_FAMILY_R300) {
+        req_minor = 17;
+        req_patch = 0;
+    } else if (info->ChipFamily >= CHIP_FAMILY_R200) {
+	req_minor = 5;
+	req_patch = 0;
+    } else {
+	req_minor = 3;
+	req_patch = 0;
+    }
+
+    /* We don't, bummer ! */
+    if (info->pKernelDRMVersion->version_major != 1 ||
+	info->pKernelDRMVersion->version_minor < req_minor ||
+	(info->pKernelDRMVersion->version_minor == req_minor &&
+	 info->pKernelDRMVersion->version_patchlevel < req_patch)) {
+        /* Incompatible drm version */
+	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+		   "[dri] RADEONDRIGetVersion failed because of a version "
+		   "mismatch.\n"
+		   "[dri] radeon.o kernel module version is %d.%d.%d "
+		   "but version 1.%d.%d or newer is needed.\n"
+		   "[dri] Disabling DRI.\n",
+		   info->pKernelDRMVersion->version_major,
+		   info->pKernelDRMVersion->version_minor,
+		   info->pKernelDRMVersion->version_patchlevel,
+		   req_minor,
+		   req_patch);
+	drmFreeVersion(info->pKernelDRMVersion);
+	info->pKernelDRMVersion = NULL;
+	return FALSE;
+    }
+
+    return TRUE;
+}
+
+/* Initialize the screen-specific data structures for the DRI and the
+ * Radeon.  This is the main entry point to the device-specific
+ * initialization code.  It calls device-independent DRI functions to
+ * create the DRI data structures and initialize the DRI state.
+ */
+Bool RADEONDRIScreenInit(ScreenPtr pScreen)
+{
+    ScrnInfoPtr    pScrn   = xf86Screens[pScreen->myNum];
+    RADEONInfoPtr  info    = RADEONPTR(pScrn);
+    DRIInfoPtr     pDRIInfo;
+    RADEONDRIPtr   pRADEONDRI;
+    drmVersionPtr  version;
+
     switch (info->CurrentLayout.pixel_code) {
     case 8:
     case 15:
@@ -1350,117 +1458,6 @@ Bool RADEONDRIScreenInit(ScreenPtr pScreen)
 	pDRIInfo = NULL;
 	return FALSE;
     }
-
-    /* Check the DRM lib version.
-     * drmGetLibVersion was not supported in version 1.0, so check for
-     * symbol first to avoid possible crash or hang.
-     */
-    if (xf86LoaderCheckSymbol("drmGetLibVersion")) {
-	version = drmGetLibVersion(info->drmFD);
-    } else {
-	/* drmlib version 1.0.0 didn't have the drmGetLibVersion
-	 * entry point.  Fake it by allocating a version record
-	 * via drmGetVersion and changing it to version 1.0.0.
-	 */
-	version = drmGetVersion(info->drmFD);
-	version->version_major      = 1;
-	version->version_minor      = 0;
-	version->version_patchlevel = 0;
-    }
-
-    if (version) {
-	if (version->version_major != 1 ||
-	    version->version_minor < 1) {
-	    /* incompatible drm library version */
-	    xf86DrvMsg(pScreen->myNum, X_ERROR,
-		       "[dri] RADEONDRIScreenInit failed because of a "
-		       "version mismatch.\n"
-		       "[dri] libdrm.a module version is %d.%d.%d but "
-		       "version 1.1.x is needed.\n"
-		       "[dri] Disabling DRI.\n",
-		       version->version_major,
-		       version->version_minor,
-		       version->version_patchlevel);
-	    drmFreeVersion(version);
-	    RADEONDRICloseScreen(pScreen);
-	    return FALSE;
-	}
-	drmFreeVersion(version);
-    }
-
-    /* Check the radeon DRM version */
-    version = drmGetVersion(info->drmFD);
-    if (version) {
-	int req_minor, req_patch;
-
-	if (info->IsIGP) {
-	    req_minor = 10;
-	    req_patch = 0;
-       	} else if (info->ChipFamily >= CHIP_FAMILY_R300) {
-           req_minor = 17;
-           req_patch = 0;
-	} else if (info->ChipFamily >= CHIP_FAMILY_R200) {
-	    req_minor = 5;
-	    req_patch = 0;
-	} else {
-#if X_BYTE_ORDER == X_LITTLE_ENDIAN
-	    req_minor = 1;
-	    req_patch = 0;
-#else
-	    req_minor = 2;
-	    req_patch = 1;
-#endif
-	}
-
-	if (version->version_major != 1 ||
-	    version->version_minor < req_minor ||
-	    (version->version_minor == req_minor &&
-	     version->version_patchlevel < req_patch)) {
-	    /* Incompatible drm version */
-	    xf86DrvMsg(pScreen->myNum, X_ERROR,
-		       "[dri] RADEONDRIScreenInit failed because of a version "
-		       "mismatch.\n"
-		       "[dri] radeon.o kernel module version is %d.%d.%d "
-		       "but version 1.%d.%d or newer is needed.\n"
-		       "[dri] Disabling DRI.\n",
-		       version->version_major,
-		       version->version_minor,
-		       version->version_patchlevel,
-		       req_minor,
-		       req_patch);
-	    drmFreeVersion(version);
-	    RADEONDRICloseScreen(pScreen);
-	    return FALSE;
-	}
-
-	if (version->version_minor < 3) {
-	    xf86DrvMsg(pScreen->myNum, X_WARNING,
-		       "[dri] Some DRI features disabled because of version "
-		       "mismatch.\n"
-		       "[dri] radeon.o kernel module version is %d.%d.%d but "
-		       "1.3.1 or later is preferred.\n",
-		       version->version_major,
-		       version->version_minor,
-		       version->version_patchlevel);
-	}
-	info->drmMinor = version->version_minor;
-
-	if (info->allowColorTiling && version->version_minor < 14) {
-	    xf86DrvMsg(pScreen->myNum, X_WARNING,
-		       "[dri] color tiling disabled because of version "
-		       "mismatch.\n"
-		       "[dri] radeon.o kernel module version is %d.%d.%d but "
-		       "1.14.0 or later is required for color tiling.\n",
-		       version->version_major,
-		       version->version_minor,
-		       version->version_patchlevel);
-	   info->allowColorTiling = FALSE;
-	   info->tilingEnabled = FALSE;
-	   pDRIInfo->ddxDriverMajorVersion = RADEON_VERSION_MAJOR;
-	}
-	drmFreeVersion(version);
-    }
-
 				/* Initialize AGP */
     if (info->cardType==CARD_AGP && !RADEONDRIAgpInit(info, pScreen)) {
 	xf86DrvMsg(pScreen->myNum, X_ERROR,
@@ -1613,7 +1610,7 @@ void RADEONDRIInitPageFlip(ScreenPtr pScreen)
    /* Have shadowfb run only while there is 3d active. This must happen late,
      * after XAAInit has been called 
      */
-    if (!info->useEXA  /* && info->drmMinor >= 3 */) {
+    if (!info->useEXA) {
 	if (!ShadowFBInit( pScreen, RADEONDRIRefreshArea )) {
 	    xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
 		       "ShadowFB init failed, Page Flipping disabled\n");
@@ -1638,7 +1635,7 @@ void RADEONDRIResume(ScreenPtr pScreen)
     ScrnInfoPtr   pScrn   = xf86Screens[pScreen->myNum];
     RADEONInfoPtr info    = RADEONPTR(pScrn);
 
-    if (info->drmMinor >= 9) {
+    if (info->pKernelDRMVersion->version_minor >= 9) {
 	xf86DrvMsg(pScreen->myNum, X_INFO,
 		   "[RESUME] Attempting to re-init Radeon hardware.\n");
     } else {
@@ -2008,7 +2005,8 @@ void RADEONDRIAllocatePCIGARTTable(ScreenPtr pScreen)
     ScrnInfoPtr        pScrn   = xf86Screens[pScreen->myNum];
     RADEONInfoPtr      info    = RADEONPTR(pScrn);
 
-    if (info->cardType!=CARD_PCIE || info->drmMinor<19)
+    if (info->cardType != CARD_PCIE ||
+	info->pKernelDRMVersion->version_minor < 19)
       return;
 
     if (info->FbSecureSize==0)