pci: allow drivers to be bound several times to the same PCI device

[dpdk.git] / lib / librte_eal / common / include / rte_pci.h

diff --git a/lib/librte_eal/common/include/rte_pci.h b/lib/librte_eal/common/include/rte_pci.h
index 4be38d2..99f4de2 100644 (file)
--- a/lib/librte_eal/common/include/rte_pci.h
+++ b/lib/librte_eal/common/include/rte_pci.h
@@ -31,6 +31,36 @@
  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  * 
  */
+/*   BSD LICENSE
+ *
+ *   Copyright(c) 2013 6WIND.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of 6WIND S.A. nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
 
 #ifndef _RTE_PCI_H_
 #define _RTE_PCI_H_
@@ -45,6 +75,7 @@
 extern "C" {
 #endif
 
+#include <limits.h>
 #include <sys/queue.h>
 #include <stdint.h>
 #include <inttypes.h>
@@ -110,6 +141,7 @@ struct rte_pci_device {
        struct rte_pci_id id;                   /**< PCI ID. */
        struct rte_pci_resource mem_resource;   /**< PCI Memory Resource */
        struct rte_intr_handle intr_handle;     /**< Interrupt handle */
+       char previous_dr[PATH_MAX];             /**< path for pre-dpdk driver*/
        const struct rte_pci_driver *driver;    /**< Associated driver */
        unsigned int blacklisted:1;             /**< Device is blacklisted */
 };
@@ -153,6 +185,13 @@ struct rte_pci_driver {
 
 /**< Device needs igb_uio kernel module */
 #define RTE_PCI_DRV_NEED_IGB_UIO 0x0001
+/**< Device driver must be registered several times until failure */
+#define RTE_PCI_DRV_MULTIPLE 0x0002
+
+/**
+ * Perform clean up of pci drivers on application exits.
+ * */
+void rte_eal_pci_exit(void);
 
 /**
  * Probe the PCI bus for registered drivers.