New upstream version 17.08

[deb_dpdk.git] / drivers / event / dpaa2 / dpaa2_hw_dpcon.c

diff --git a/drivers/event/dpaa2/dpaa2_hw_dpcon.c b/drivers/event/dpaa2/dpaa2_hw_dpcon.c
new file mode 100644 (file)
index 0000000..d3e73f9
--- /dev/null
+++ b/drivers/event/dpaa2/dpaa2_hw_dpcon.c
@@ -0,0 +1,139 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright 2017 NXP.
+ *
+ *   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 <unistd.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <string.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <rte_malloc.h>
+#include <rte_memcpy.h>
+#include <rte_string_fns.h>
+#include <rte_cycles.h>
+#include <rte_kvargs.h>
+#include <rte_dev.h>
+#include <rte_ethdev.h>
+
+#include <fslmc_vfio.h>
+#include <mc/fsl_dpcon.h>
+#include <portal/dpaa2_hw_pvt.h>
+#include "dpaa2_eventdev.h"
+
+TAILQ_HEAD(dpcon_dev_list, dpaa2_dpcon_dev);
+static struct dpcon_dev_list dpcon_dev_list
+       = TAILQ_HEAD_INITIALIZER(dpcon_dev_list); /*!< DPCON device list */
+
+static int
+rte_dpaa2_create_dpcon_device(struct fslmc_vfio_device *vdev __rte_unused,
+                             struct vfio_device_info *obj_info __rte_unused,
+                        int dpcon_id)
+{
+       struct dpaa2_dpcon_dev *dpcon_node;
+       struct dpcon_attr attr;
+       int ret;
+
+       /* Allocate DPAA2 dpcon handle */
+       dpcon_node = rte_malloc(NULL, sizeof(struct dpaa2_dpcon_dev), 0);
+       if (!dpcon_node) {
+               PMD_DRV_LOG(ERR, "Memory allocation failed for DPCON Device");
+               return -1;
+       }
+
+       /* Open the dpcon object */
+       dpcon_node->dpcon.regs = rte_mcp_ptr_list[MC_PORTAL_INDEX];
+       ret = dpcon_open(&dpcon_node->dpcon,
+                        CMD_PRI_LOW, dpcon_id, &dpcon_node->token);
+       if (ret) {
+               PMD_DRV_LOG(ERR, "Resource alloc failure with err code: %d",
+                           ret);
+               rte_free(dpcon_node);
+               return -1;
+       }
+
+       /* Get the device attributes */
+       ret = dpcon_get_attributes(&dpcon_node->dpcon,
+                                  CMD_PRI_LOW, dpcon_node->token, &attr);
+       if (ret != 0) {
+               PMD_DRV_LOG(ERR, "Reading device failed with err code: %d",
+                           ret);
+               rte_free(dpcon_node);
+               return -1;
+       }
+
+       /* Updating device specific private information*/
+       dpcon_node->qbman_ch_id = attr.qbman_ch_id;
+       dpcon_node->num_priorities = attr.num_priorities;
+       dpcon_node->dpcon_id = dpcon_id;
+       rte_atomic16_init(&dpcon_node->in_use);
+
+       TAILQ_INSERT_TAIL(&dpcon_dev_list, dpcon_node, next);
+
+       PMD_DRV_LOG(DEBUG, "DPAA2: Added [dpcon.%d]", dpcon_id);
+
+       return 0;
+}
+
+struct dpaa2_dpcon_dev *rte_dpaa2_alloc_dpcon_dev(void)
+{
+       struct dpaa2_dpcon_dev *dpcon_dev = NULL;
+
+       /* Get DPCON dev handle from list using index */
+       TAILQ_FOREACH(dpcon_dev, &dpcon_dev_list, next) {
+               if (dpcon_dev && rte_atomic16_test_and_set(&dpcon_dev->in_use))
+                       break;
+       }
+
+       return dpcon_dev;
+}
+
+void rte_dpaa2_free_dpcon_dev(struct dpaa2_dpcon_dev *dpcon)
+{
+       struct dpaa2_dpcon_dev *dpcon_dev = NULL;
+
+       /* Match DPCON handle and mark it free */
+       TAILQ_FOREACH(dpcon_dev, &dpcon_dev_list, next) {
+               if (dpcon_dev == dpcon) {
+                       rte_atomic16_dec(&dpcon_dev->in_use);
+                       return;
+               }
+       }
+}
+
+static struct rte_dpaa2_object rte_dpaa2_dpcon_obj = {
+       .object_id = DPAA2_MC_DPCON_DEVID,
+       .create = rte_dpaa2_create_dpcon_device,
+};
+
+RTE_PMD_REGISTER_DPAA2_OBJECT(dpcon, rte_dpaa2_dpcon_obj);