[ofw] ibbus filter driver patch 1/18 - bus_driver.c

[Smith, Stan]

Ibbus as a class upper filter driver for mthca (InfiniHost) and/or mlx5 (ConnectX) HCA drivers.
Places the ibbus driver in the same device stack as the HCA; stepwise refinement towards removing IBAL PNP handling in favor of Windows PNP management.
The HCA driver .inx/f file instantiates the 'InfiniBandController' class, with ibbus as a class upper filter driver. Eliminates ibbus co-installer and usage of ib_bus.inf files.
IOU items from ib_bus.inf have migrated to core\iou\ib_iou.inx

Files in SVN\gen1\branches\winverbs\core\bus\kernel


Signed-off by: Stan Smith (stan.smith at intel.com)

Having problems with Intel mailer, hence formatting of patch is incorrect, see attached patch file.

diff -Naur --exclude-from=./SKIP kernel-svn/bus_driver.c kernel/bus_driver.c
--- kernel-svn/bus_driver.c     2008-07-08 12:01:36.000000000 -0700
+++ kernel/bus_driver.c 2008-08-18 09:57:41.713101100 -0700
@@ -27,7 +27,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  *
- * $Id: bus_driver.c 1294 2008-06-21 00:27:03Z stansmith $
+ * $Id: bus_driver.c 1453 2008-08-02 00:43:15Z stansmith $
  */


@@ -65,6 +65,7 @@
        BUS_DBG_ERROR,
        TRUE,
        NULL,
+       NULL,
        NULL
 };

@@ -191,7 +192,8 @@
 * output:      pkey_array
 * return:      uint16_t number of pkey(s) found
 *************************************************************************************/
-static uint16_t __prepare_pKey_array(IN const UNICODE_STRING *str, OUT uint16_t *pkey_array)
+static uint16_t
+__prepare_pKey_array(IN const UNICODE_STRING *str, OUT uint16_t *pkey_array)
 {
        uint16_t i, num_pKeys, cur_pkey_length;
        NTSTATUS status;
@@ -320,6 +322,7 @@
        BUS_EXIT( BUS_DBG_DRV );
        return num_pKeys;
 }
+
 static NTSTATUS
 __read_registry(
        IN                              UNICODE_STRING* const           p_registry_path )
@@ -440,6 +443,8 @@
 #if DBG
        if( g_al_dbg_flags & AL_DBG_ERR )
                g_al_dbg_flags |= CL_DBG_ERROR;
+
+       bus_globals.dbg_lvl |= BUS_DBG_DRV | BUS_DBG_PNP;
 #endif

        BUS_TRACE(BUS_DBG_DRV ,
@@ -667,7 +672,7 @@
        IN                              DRIVER_OBJECT                           *p_driver_obj,
        IN                              UNICODE_STRING                          *p_registry_path )
 {
-       NTSTATUS                        status;
+       NTSTATUS                status;

        BUS_ENTER( BUS_DBG_DRV );

@@ -707,6 +712,15 @@
        p_driver_obj->DriverUnload = bus_drv_unload;
        p_driver_obj->DriverExtension->AddDevice = bus_add_device;

+       // Mutex to synchronize multiple threads creating & deleting
+       // control deviceobjects.
+
+       ExInitializeFastMutex(&ControlMutex);
+       bfi_InstanceCount = 0;
+       memset(  __out_bcount(sizeof(bus_filters)) (void*)bus_filters, 0,
+                       sizeof(bus_filters) );
+
        BUS_EXIT( BUS_DBG_DRV );
        return STATUS_SUCCESS;
 }
+
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