event/octeontx: add octeontx eventdev driver

This adds the minimal changes to allow a octeontx eventdev
implementation to be compiled, linked and created at run time.
The eventdev does nothing, but can be created via vdev
on command line, e.g.

sudo ./build/app/test -c 0xff00 --vdev=event_octeontx
...
Initializing event_octeontx domain=4 max_queues=64 max_ports=32
RTE>>

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Acked-by: Gage Eads <gage.eads@intel.com>

diff --git a/drivers/event/octeontx/Makefile b/drivers/event/octeontx/Makefile
index fc0f25e..57d01ad 100644 (file)
--- a/drivers/event/octeontx/Makefile
+++ b/drivers/event/octeontx/Makefile
@@ -46,6 +46,7 @@ LIBABIVER := 1
 #
 # all source are stored in SRCS-y
 #
+SRCS-$(CONFIG_RTE_LIBRTE_PMD_OCTEONTX_SSOVF) += ssovf_evdev.c
 SRCS-$(CONFIG_RTE_LIBRTE_PMD_OCTEONTX_SSOVF) += ssovf_probe.c
 SRCS-$(CONFIG_RTE_LIBRTE_PMD_OCTEONTX_SSOVF) += ssovf_mbox.c
 

diff --git a/drivers/event/octeontx/ssovf_evdev.c b/drivers/event/octeontx/ssovf_evdev.c
new file mode 100644 (file)
index 0000000..16c6123
--- /dev/null
+++ b/drivers/event/octeontx/ssovf_evdev.c
@@ -0,0 +1,153 @@
+/*
+ *   BSD LICENSE
+ *
+ *   Copyright (C) Cavium networks Ltd. 2017.
+ *
+ *   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 Cavium networks 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 <rte_common.h>
+#include <rte_debug.h>
+#include <rte_dev.h>
+#include <rte_eal.h>
+#include <rte_lcore.h>
+#include <rte_log.h>
+#include <rte_malloc.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include <rte_vdev.h>
+
+#include "ssovf_evdev.h"
+
+/* SSOPF Mailbox messages */
+
+struct ssovf_mbox_dev_info {
+       uint64_t min_deq_timeout_ns;
+       uint64_t max_deq_timeout_ns;
+       uint32_t max_num_events;
+};
+
+static int
+ssovf_mbox_dev_info(struct ssovf_mbox_dev_info *info)
+{
+       struct octeontx_mbox_hdr hdr = {0};
+       uint16_t len = sizeof(struct ssovf_mbox_dev_info);
+
+       hdr.coproc = SSO_COPROC;
+       hdr.msg = SSO_GET_DEV_INFO;
+       hdr.vfid = 0;
+
+       memset(info, 0, len);
+       return octeontx_ssovf_mbox_send(&hdr, NULL, 0, info, len);
+}
+
+static int
+ssovf_vdev_probe(const char *name, const char *params)
+{
+       struct octeontx_ssovf_info oinfo;
+       struct ssovf_mbox_dev_info info;
+       struct ssovf_evdev *edev;
+       struct rte_eventdev *eventdev;
+       static int ssovf_init_once;
+       int ret;
+
+       RTE_SET_USED(params);
+
+       /* More than one instance is not supported */
+       if (ssovf_init_once) {
+               ssovf_log_err("Request to create >1 %s instance", name);
+               return -EINVAL;
+       }
+
+       eventdev = rte_event_pmd_vdev_init(name, sizeof(struct ssovf_evdev),
+                               rte_socket_id());
+       if (eventdev == NULL) {
+               ssovf_log_err("Failed to create eventdev vdev %s", name);
+               return -ENOMEM;
+       }
+       eventdev->dev_ops = NULL;
+
+       /* For secondary processes, the primary has done all the work */
+       if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+               return 0;
+
+       ret = octeontx_ssovf_info(&oinfo);
+       if (ret) {
+               ssovf_log_err("Failed to probe and validate ssovfs %d", ret);
+               goto error;
+       }
+
+       edev = ssovf_pmd_priv(eventdev);
+       edev->max_event_ports = oinfo.total_ssowvfs;
+       edev->max_event_queues = oinfo.total_ssovfs;
+       edev->is_timeout_deq = 0;
+
+       ret = ssovf_mbox_dev_info(&info);
+       if (ret < 0 || ret != sizeof(struct ssovf_mbox_dev_info)) {
+               ssovf_log_err("Failed to get mbox devinfo %d", ret);
+               goto error;
+       }
+
+       edev->min_deq_timeout_ns = info.min_deq_timeout_ns;
+       edev->max_deq_timeout_ns = info.max_deq_timeout_ns;
+       edev->max_num_events =  info.max_num_events;
+       ssovf_log_dbg("min_deq_tmo=%"PRId64" max_deq_tmo=%"PRId64" max_evts=%d",
+                       info.min_deq_timeout_ns, info.max_deq_timeout_ns,
+                       info.max_num_events);
+
+       if (!edev->max_event_ports || !edev->max_event_queues) {
+               ssovf_log_err("Not enough eventdev resource queues=%d ports=%d",
+                       edev->max_event_queues, edev->max_event_ports);
+               ret = -ENODEV;
+               goto error;
+       }
+
+       ssovf_log_info("Initializing %s domain=%d max_queues=%d max_ports=%d",
+                       name, oinfo.domain, edev->max_event_queues,
+                       edev->max_event_ports);
+
+       ssovf_init_once = 1;
+       return 0;
+
+error:
+       rte_event_pmd_vdev_uninit(name);
+       return ret;
+}
+
+static int
+ssovf_vdev_remove(const char *name)
+{
+       ssovf_log_info("Closing %s", name);
+       return rte_event_pmd_vdev_uninit(name);
+}
+
+static struct rte_vdev_driver vdev_ssovf_pmd = {
+       .probe = ssovf_vdev_probe,
+       .remove = ssovf_vdev_remove
+};
+
+RTE_PMD_REGISTER_VDEV(EVENTDEV_NAME_OCTEONTX_PMD, vdev_ssovf_pmd);

diff --git a/drivers/event/octeontx/ssovf_evdev.h b/drivers/event/octeontx/ssovf_evdev.h
index c2b8187..b8b89a7 100644 (file)
--- a/drivers/event/octeontx/ssovf_evdev.h
+++ b/drivers/event/octeontx/ssovf_evdev.h
@@ -34,6 +34,7 @@
 #define __SSOVF_EVDEV_H__
 
 #include <rte_config.h>
+#include <rte_eventdev_pmd.h>
 #include <rte_io.h>
 
 #include "rte_pmd_octeontx_ssovf.h"
@@ -108,4 +109,26 @@
 
 #define SSOW_BAR4_LEN                     (64 * 1024)
 
+/* Mailbox message constants */
+#define SSO_COPROC                        0x2
+
+#define SSO_GETDOMAINCFG                  0x1
+#define SSO_IDENTIFY                      0x2
+#define SSO_GET_DEV_INFO                  0x3
+
+struct ssovf_evdev {
+       uint8_t max_event_queues;
+       uint8_t max_event_ports;
+       uint8_t is_timeout_deq;
+       uint32_t min_deq_timeout_ns;
+       uint32_t max_deq_timeout_ns;
+       int32_t max_num_events;
+} __rte_cache_aligned;
+
+static inline struct ssovf_evdev *
+ssovf_pmd_priv(const struct rte_eventdev *eventdev)
+{
+       return eventdev->data->dev_private;
+}
+
 #endif /* __SSOVF_EVDEV_H__ */