Changeset 60801 in vbox for trunk/src/VBox/ValidationKit/utils/usb/UsbTestServicePlatform-linux.cpp

Timestamp:

May 3, 2016 8:53:41 AM (9 years ago)

Author:

vboxsync

Message:

ValidationKit/UsbTestService: Fixes to support testing super-speed devices. The gadget functions hard code the maximum supported USB speed. When the dummy HCD is enabled for super

speed devices we can't control the desired speed of the device so it is always super speed now breaking testing of lower speeds. As a workaround
the USB test server has a modified kernel with a new dummy HCD driver using a slightly different naming for super-speed devices only. The original
driver will be used for the remaining speeds. Add support for this configuration in the UsbTestService.

File:

• trunk/src/VBox/ValidationKit/utils/usb/UsbTestServicePlatform-linux.cpp (modified) (11 diffs)

trunk/src/VBox/ValidationKit/utils/usb/UsbTestServicePlatform-linux.cpp

@@ -64 +64 @@
     /** Index of the dummy hcd entry. */
     uint32_t                   idxDummyHcd;
+    /** Name for the dummy HCD. */
+    const char                 *pszHcdName;
+    /** Name for the accompanying dummy HCD. */
+    const char                 *pszUdcName;
     /** Flag whether this HCD is free for use. */
     bool                       fAvailable;
+    /** Flag whether this HCD contains a super speed capable bus. */
+    bool                       fSuperSpeed;
     /** Number of busses this HCD instance serves. */
     unsigned                   cBusses;
@@ -94 +100 @@
  * @returns IPRT status code.
  * @param   pHcd              The dummy HCD bus instance.
- */
-static int utsPlatformLnxDummyHcdQueryBusses(PUTSPLATFORMLNXDUMMYHCD pHcd)
+ * @param   pszHcdName        The base HCD name.
+ */
+static int utsPlatformLnxDummyHcdQueryBusses(PUTSPLATFORMLNXDUMMYHCD pHcd, const char *pszHcdName)
 {
     int rc = VINF_SUCCESS;
@@ -102 +109 @@
     unsigned idxBusMax = 0;
 
-    size_t cchPath = RTStrPrintf(&aszPath[0], RT_ELEMENTS(aszPath), UTS_PLATFORM_LNX_DUMMY_HCD_PATH "/dummy_hcd.%u/usb*", pHcd->idxDummyHcd);
+    size_t cchPath = RTStrPrintf(&aszPath[0], RT_ELEMENTS(aszPath), UTS_PLATFORM_LNX_DUMMY_HCD_PATH "/%s.%u/usb*",
+                                 pszHcdName, pHcd->idxDummyHcd);
     if (cchPath == RT_ELEMENTS(aszPath))
         return VERR_BUFFER_OVERFLOW;
@@ -125 +133 @@
                     int64_t iSpeed = 0;
                     bool fSuperSpeed = false;
-                    rc = RTLinuxSysFsReadIntFile(10, &iSpeed, UTS_PLATFORM_LNX_DUMMY_HCD_PATH "/dummy_hcd.%u/%s/speed",
-                                                 pHcd->idxDummyHcd, DirFolderContent.szName);
+                    rc = RTLinuxSysFsReadIntFile(10, &iSpeed, UTS_PLATFORM_LNX_DUMMY_HCD_PATH "/%s.%u/%s/speed",
+                                                 pszHcdName, pHcd->idxDummyHcd, DirFolderContent.szName);
                     if (   RT_SUCCESS(rc)
                         && (iSpeed == 5000 || iSpeed == 10000))
+                    {
                         fSuperSpeed = true;
+                        pHcd->fSuperSpeed = true;
+                    }
 
                     /* Add to array of available busses for this HCD. */
@@ -167 +178 @@
 
 
+/**
+ * Scans all available HCDs with the given name.
+ *
+ * @returns IPRT status code.
+ * @param   pszHcdName        The base HCD name.
+ * @param   pszUdcName        The base UDC name.
+ */
+static int utsPlatformLnxHcdScanByName(const char *pszHcdName, const char *pszUdcName)
+{
+    char aszPath[RTPATH_MAX + 1];
+    size_t cchPath = RTStrPrintf(&aszPath[0], RT_ELEMENTS(aszPath),
+                                 UTS_PLATFORM_LNX_DUMMY_HCD_PATH "/%s.*", pszHcdName);
+    if (cchPath == RT_ELEMENTS(aszPath))
+        return VERR_BUFFER_OVERFLOW;
+
+    /* Enumerate the available HCD and their bus numbers. */
+    PRTDIR pDir = NULL;
+    int rc = RTDirOpenFiltered(&pDir, aszPath, RTDIRFILTER_WINNT, 0);
+    if (RT_SUCCESS(rc))
+    {
+        unsigned idxHcdCur = g_cDummyHcd;
+        unsigned idxHcdMax = g_cDummyHcd;
+
+        do
+        {
+            RTDIRENTRY DirFolderContent;
+            rc = RTDirRead(pDir, &DirFolderContent, NULL);
+            if (RT_SUCCESS(rc))
+            {
+                /*
+                 * Get the HCD index and assigned bus number form the sysfs entries,
+                 * Any error here is silently ignored and results in the HCD not being
+                 * added to the list of available controllers.
+                 */
+                const char *pszIdx = RTStrStr(DirFolderContent.szName, ".");
+                if (pszIdx)
+                {
+                    /* Skip the separator and convert number to index. */
+                    pszIdx++;
+
+                    uint32_t idxHcd = 0;
+                    rc = RTStrToUInt32Ex(pszIdx, NULL, 10, &idxHcd);
+                    if (RT_SUCCESS(rc))
+                    {
+                        /* Add to array of available HCDs. */
+                        if (idxHcdCur == idxHcdMax)
+                        {
+                            size_t cbNew = (idxHcdMax + 10) * sizeof(UTSPLATFORMLNXDUMMYHCD);
+                            PUTSPLATFORMLNXDUMMYHCD pNew = (PUTSPLATFORMLNXDUMMYHCD)RTMemRealloc(g_paDummyHcd, cbNew);
+                            if (pNew)
+                            {
+                                idxHcdMax += 10;
+                                g_paDummyHcd = pNew;
+                            }
+                        }
+
+                        if (idxHcdCur < idxHcdMax)
+                        {
+                            g_paDummyHcd[idxHcdCur].idxDummyHcd = idxHcd;
+                            g_paDummyHcd[idxHcdCur].pszHcdName  = pszHcdName;
+                            g_paDummyHcd[idxHcdCur].pszUdcName  = pszUdcName;
+                            g_paDummyHcd[idxHcdCur].fAvailable  = true;
+                            g_paDummyHcd[idxHcdCur].fSuperSpeed = false;
+                            g_paDummyHcd[idxHcdCur].cBusses     = 0;
+                            g_paDummyHcd[idxHcdCur].paBusses    = NULL;
+                            rc = utsPlatformLnxDummyHcdQueryBusses(&g_paDummyHcd[idxHcdCur], pszHcdName);
+                            if (RT_SUCCESS(rc))
+                                idxHcdCur++;
+                        }
+                        else
+                            rc = VERR_NO_MEMORY;
+                    }
+                }
+            }
+        } while (RT_SUCCESS(rc));
+
+        g_cDummyHcd = idxHcdCur;
+
+        if (rc == VERR_NO_MORE_FILES)
+            rc = VINF_SUCCESS;
+
+        RTDirClose(pDir);
+    }
+
+    return rc;
+}
+
 DECLHIDDEN(int) utsPlatformInit(void)
 {
@@ -173 +271 @@
     if (RT_SUCCESS(rc))
     {
-        const char *apszArg[] = { "num=2", "is_super_speed=1" }; /** @todo: Make configurable from config. */
+        const char *apszArg[] = { "num=20" }; /** @todo: Make configurable from config. */
         rc = utsPlatformModuleLoad("dummy_hcd", &apszArg[0], RT_ELEMENTS(apszArg));
         if (RT_SUCCESS(rc))
-        {
-            /* Enumerate the available HCD and their bus numbers. */
-            PRTDIR pDir = NULL;
-            rc = RTDirOpenFiltered(&pDir, UTS_PLATFORM_LNX_DUMMY_HCD_PATH "/dummy_hcd.*", RTDIRFILTER_WINNT, 0);
-            if (RT_SUCCESS(rc))
-            {
-                unsigned idxHcdCur = 0;
-                unsigned idxHcdMax = 0;
-
-                do
-                {
-                    RTDIRENTRY DirFolderContent;
-                    rc = RTDirRead(pDir, &DirFolderContent, NULL);
-                    if (RT_SUCCESS(rc))
-                    {
-                        /*
-                         * Get the HCD index and assigned bus number form the sysfs entries,
-                         * Any error here is silently ignored and results in the HCD not being
-                         * added to the list of available controllers.
-                         */
-                        const char *pszIdx = RTStrStr(DirFolderContent.szName, ".");
-                        if (pszIdx)
-                        {
-                            /* Skip the separator and convert number to index. */
-                            pszIdx++;
-
-                            uint32_t idxHcd = 0;
-                            rc = RTStrToUInt32Ex(pszIdx, NULL, 10, &idxHcd);
-                            if (RT_SUCCESS(rc))
-                            {
-                                /* Add to array of available HCDs. */
-                                if (idxHcdCur == idxHcdMax)
-                                {
-                                    size_t cbNew = (idxHcdMax + 10) * sizeof(UTSPLATFORMLNXDUMMYHCD);
-                                    PUTSPLATFORMLNXDUMMYHCD pNew = (PUTSPLATFORMLNXDUMMYHCD)RTMemRealloc(g_paDummyHcd, cbNew);
-                                    if (pNew)
-                                    {
-                                        idxHcdMax += 10;
-                                        g_paDummyHcd = pNew;
-                                    }
-                                }
-
-                                if (idxHcdCur < idxHcdMax)
-                                {
-                                    g_paDummyHcd[idxHcdCur].idxDummyHcd = idxHcd;
-                                    g_paDummyHcd[idxHcdCur].fAvailable  = true;
-                                    g_paDummyHcd[idxHcdCur].cBusses     = 0;
-                                    g_paDummyHcd[idxHcdCur].paBusses    = NULL;
-                                    rc = utsPlatformLnxDummyHcdQueryBusses(&g_paDummyHcd[idxHcdCur]);
-                                    if (RT_SUCCESS(rc))
-                                        idxHcdCur++;
-                                }
-                                else
-                                    rc = VERR_NO_MEMORY;
-                            }
-                        }
-                    }
-                } while (RT_SUCCESS(rc));
-
-                g_cDummyHcd = idxHcdCur;
-
-                if (rc == VERR_NO_MORE_FILES)
-                    rc = VINF_SUCCESS;
-
-                RTDirClose(pDir);
-            }
-        }
+            rc = utsPlatformModuleLoad("dummy_hcd_ss", &apszArg[0], RT_ELEMENTS(apszArg));
+        if (RT_SUCCESS(rc))
+            rc = utsPlatformLnxHcdScanByName("dummy_hcd", "dummy_udc");
+        if (RT_SUCCESS(rc))
+            rc = utsPlatformLnxHcdScanByName("dummy_hcd_ss", "dummy_udc_ss");
     }
 
@@ -253 +289 @@
     /* Unload dummy HCD. */
     utsPlatformModuleUnload("dummy_hcd");
+    utsPlatformModuleUnload("dummy_hcd_ss");
 
     RTMemFree(g_paDummyHcd);
@@ -328 +365 @@
         PUTSPLATFORMLNXDUMMYHCD pHcd = &g_paDummyHcd[i];
 
-        if (pHcd->fAvailable)
+        /*
+         * We can't use a super speed capable UDC for gadgets with lower speeds
+         * because they hardcode the maximum speed to SuperSpeed most of the time
+         * which will make it unusable for lower speeds.
+         */
+        if (   pHcd->fAvailable
+            && pHcd->fSuperSpeed == fSuperSpeed)
         {
             /* Check all assigned busses for a speed match. */
@@ -336 +379 @@
                 {
                     rc = VINF_SUCCESS;
-                    int cbRet = RTStrAPrintf(ppszUdc, "dummy_udc.%u", pHcd->idxDummyHcd);
+                    int cbRet = RTStrAPrintf(ppszUdc, "%s.%u", pHcd->pszUdcName, pHcd->idxDummyHcd);
                     if (cbRet == -1)
                         rc = VERR_NO_STR_MEMORY;
@@ -360 +403 @@
     if (pszIdx)
     {
+        size_t cchUdcName = pszIdx - pszUdc;
         pszIdx++;
         uint32_t idxHcd = 0;
@@ -369 +413 @@
             for (unsigned i = 0; i < g_cDummyHcd; i++)
             {
-                if (g_paDummyHcd[i].idxDummyHcd == idxHcd)
+                if (   g_paDummyHcd[i].idxDummyHcd == idxHcd
+                    && !RTStrNCmp(g_paDummyHcd[i].pszUdcName, pszUdc, cchUdcName))
                 {
                     AssertReturn(!g_paDummyHcd[i].fAvailable, VERR_INVALID_PARAMETER);