Imported Upstream version 17.05

[deb_dpdk.git] / drivers / bus / fslmc / fslmc_bus.c

diff --git a/drivers/bus/fslmc/fslmc_bus.c b/drivers/bus/fslmc/fslmc_bus.c
new file mode 100644 (file)
index 0000000..b24642d
--- /dev/null
+++ b/drivers/bus/fslmc/fslmc_bus.c
@@ -0,0 +1,141 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright (c) 2016 NXP. All rights reserved.
+ *
+ *   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 NXP 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.
+ */
+
+#include <string.h>
+#include <dirent.h>
+
+#include <rte_log.h>
+#include <rte_bus.h>
+#include <rte_eal_memconfig.h>
+#include <rte_malloc.h>
+#include <rte_devargs.h>
+#include <rte_memcpy.h>
+#include <rte_ethdev.h>
+
+#include "rte_fslmc.h"
+#include "fslmc_vfio.h"
+
+#define FSLMC_BUS_LOG(level, fmt, args...) \
+       RTE_LOG(level, EAL, "%s(): " fmt "\n", __func__, ##args)
+
+struct rte_fslmc_bus rte_fslmc_bus;
+
+static int
+rte_fslmc_scan(void)
+{
+       int ret;
+
+       ret = fslmc_vfio_setup_group();
+       if (ret) {
+               FSLMC_BUS_LOG(ERR, "fslmc: Unable to setup VFIO");
+               return ret;
+       }
+
+       ret = fslmc_vfio_process_group();
+       if (ret) {
+               FSLMC_BUS_LOG(ERR, "fslmc: Unable to setup devices");
+               return -1;
+       }
+
+       RTE_LOG(INFO, EAL, "fslmc: Bus scan completed\n");
+       return 0;
+}
+
+static int
+rte_fslmc_match(struct rte_dpaa2_driver *dpaa2_drv,
+               struct rte_dpaa2_device *dpaa2_dev)
+{
+       if (dpaa2_drv->drv_type == dpaa2_dev->dev_type)
+               return 0;
+
+       return 1;
+}
+
+static int
+rte_fslmc_probe(void)
+{
+       int ret = 0;
+       struct rte_dpaa2_device *dev;
+       struct rte_dpaa2_driver *drv;
+
+       TAILQ_FOREACH(dev, &rte_fslmc_bus.device_list, next) {
+               TAILQ_FOREACH(drv, &rte_fslmc_bus.driver_list, next) {
+                       ret = rte_fslmc_match(drv, dev);
+                       if (ret)
+                               continue;
+
+                       if (!drv->probe)
+                               continue;
+
+                       ret = drv->probe(drv, dev);
+                       if (ret)
+                               FSLMC_BUS_LOG(ERR, "Unable to probe.\n");
+                       break;
+               }
+       }
+       return ret;
+}
+
+/*register a fslmc bus based dpaa2 driver */
+void
+rte_fslmc_driver_register(struct rte_dpaa2_driver *driver)
+{
+       RTE_VERIFY(driver);
+
+       TAILQ_INSERT_TAIL(&rte_fslmc_bus.driver_list, driver, next);
+       /* Update Bus references */
+       driver->fslmc_bus = &rte_fslmc_bus;
+}
+
+/*un-register a fslmc bus based dpaa2 driver */
+void
+rte_fslmc_driver_unregister(struct rte_dpaa2_driver *driver)
+{
+       struct rte_fslmc_bus *fslmc_bus;
+
+       fslmc_bus = driver->fslmc_bus;
+
+       TAILQ_REMOVE(&fslmc_bus->driver_list, driver, next);
+       /* Update Bus references */
+       driver->fslmc_bus = NULL;
+}
+
+struct rte_fslmc_bus rte_fslmc_bus = {
+       .bus = {
+               .scan = rte_fslmc_scan,
+               .probe = rte_fslmc_probe,
+       },
+       .device_list = TAILQ_HEAD_INITIALIZER(rte_fslmc_bus.device_list),
+       .driver_list = TAILQ_HEAD_INITIALIZER(rte_fslmc_bus.driver_list),
+};
+
+RTE_REGISTER_BUS(FSLMC_BUS_NAME, rte_fslmc_bus.bus);