[dpdk-dev] [PATCH v2 04/38] event/octeontx: add vdev interface functions

[Jerin Jacob]

ssovf and ssowvf PCIe VF devices are shared
between eventdev PMD and ethdev PMD. This patch
expose a set of interface API to get info
about probed ssovf and ssowvf VF resources to use
with eventdev and ethdev vdev devices latter.

Signed-off-by: Jerin Jacob <jerin.jacob at caviumnetworks.com>
Signed-off-by: Santosh Shukla <santosh.shukla at caviumnetworks.com>
Acked-by: Gage Eads <gage.eads at intel.com>
---
v2:
added -ENODEV return to octeontx_ssovf_info()
---
 drivers/event/octeontx/Makefile                    |  3 +
 drivers/event/octeontx/rte_pmd_octeontx_ssovf.h    | 53 ++++++++++++++
 .../octeontx/rte_pmd_octeontx_ssovf_version.map    |  4 ++
 drivers/event/octeontx/ssovf_evdev.h               |  2 +
 drivers/event/octeontx/ssovf_probe.c               | 84 ++++++++++++++++++++++
 5 files changed, 146 insertions(+)
 create mode 100644 drivers/event/octeontx/rte_pmd_octeontx_ssovf.h

diff --git a/drivers/event/octeontx/Makefile b/drivers/event/octeontx/Makefile
index d72ad46..896e556 100644
--- a/drivers/event/octeontx/Makefile
+++ b/drivers/event/octeontx/Makefile
@@ -48,6 +48,9 @@ LIBABIVER := 1
 #
 SRCS-$(CONFIG_RTE_LIBRTE_PMD_OCTEONTX_SSOVF) += ssovf_probe.c
 
+# install this header file
+SYMLINK-$(CONFIG_RTE_LIBRTE_PMD_OCTEONTX_SSOVF)-include := rte_pmd_octeontx_ssovf.h
+
 # this lib depends upon:
 DEPDIRS-$(CONFIG_RTE_LIBRTE_PMD_OCTEONTX_SSOVF) += lib/librte_eal
 DEPDIRS-$(CONFIG_RTE_LIBRTE_PMD_OCTEONTX_SSOVF) += lib/librte_eventdev
diff --git a/drivers/event/octeontx/rte_pmd_octeontx_ssovf.h b/drivers/event/octeontx/rte_pmd_octeontx_ssovf.h
new file mode 100644
index 0000000..e92a61f
--- /dev/null
+++ b/drivers/event/octeontx/rte_pmd_octeontx_ssovf.h
@@ -0,0 +1,53 @@
+/*
+ *   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.
+ */
+
+#ifndef __RTE_PMD_OCTEONTX_SSOVF_H__
+#define __RTE_PMD_OCTEONTX_SSOVF_H__
+
+#include <rte_common.h>
+
+struct octeontx_ssovf_info {
+	uint16_t domain; /* Domain id */
+	uint8_t total_ssovfs; /* Total sso groups available in domain */
+	uint8_t total_ssowvfs;/* Total sso hws available in domain */
+};
+
+enum octeontx_ssovf_type {
+	OCTEONTX_SSO_GROUP, /* SSO group vf */
+	OCTEONTX_SSO_HWS,  /* SSO hardware workslot vf */
+};
+
+
+int octeontx_ssovf_info(struct octeontx_ssovf_info *info);
+void *octeontx_ssovf_bar(enum octeontx_ssovf_type, uint8_t id, uint8_t bar);
+
+#endif /* __RTE_PMD_OCTEONTX_SSOVF_H__ */
diff --git a/drivers/event/octeontx/rte_pmd_octeontx_ssovf_version.map b/drivers/event/octeontx/rte_pmd_octeontx_ssovf_version.map
index 8591cc0..c71d4c7 100644
--- a/drivers/event/octeontx/rte_pmd_octeontx_ssovf_version.map
+++ b/drivers/event/octeontx/rte_pmd_octeontx_ssovf_version.map
@@ -1,4 +1,8 @@
 DPDK_17.05 {
+	global:
+
+	octeontx_ssovf_info;
+	octeontx_ssovf_bar;
 
 	local: *;
 };
diff --git a/drivers/event/octeontx/ssovf_evdev.h b/drivers/event/octeontx/ssovf_evdev.h
index 0a3c76e..c2b8187 100644
--- a/drivers/event/octeontx/ssovf_evdev.h
+++ b/drivers/event/octeontx/ssovf_evdev.h
@@ -36,6 +36,8 @@
 #include <rte_config.h>
 #include <rte_io.h>
 
+#include "rte_pmd_octeontx_ssovf.h"
+
 #define EVENTDEV_NAME_OCTEONTX_PMD event_octeontx
 
 #ifdef RTE_LIBRTE_PMD_OCTEONTX_SSOVF_DEBUG
diff --git a/drivers/event/octeontx/ssovf_probe.c b/drivers/event/octeontx/ssovf_probe.c
index 7033ff5..b644ebd 100644
--- a/drivers/event/octeontx/ssovf_probe.c
+++ b/drivers/event/octeontx/ssovf_probe.c
@@ -67,6 +67,90 @@ struct ssodev {
 
 static struct ssodev sdev;
 
+/* Interface functions */
+int
+octeontx_ssovf_info(struct octeontx_ssovf_info *info)
+{
+	uint8_t i;
+	uint16_t domain;
+
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY || info == NULL)
+		return -EINVAL;
+
+	if (sdev.total_ssovfs == 0 || sdev.total_ssowvfs == 0)
+		return -ENODEV;
+
+	domain = sdev.grp[0].domain;
+	for (i = 0; i < sdev.total_ssovfs; i++) {
+		/* Check vfid's are contiguous and belong to same domain */
+		if (sdev.grp[i].vfid != i ||
+			sdev.grp[i].bar0 == NULL ||
+			sdev.grp[i].domain != domain) {
+			ssovf_log_err("GRP error, vfid=%d/%d domain=%d/%d %p",
+				i, sdev.grp[i].vfid,
+				domain, sdev.grp[i].domain,
+				sdev.grp[i].bar0);
+			return -EINVAL;
+		}
+	}
+
+	for (i = 0; i < sdev.total_ssowvfs; i++) {
+		/* Check vfid's are contiguous and belong to same domain */
+		if (sdev.hws[i].vfid != i ||
+			sdev.hws[i].bar0 == NULL ||
+			sdev.hws[i].domain != domain) {
+			ssovf_log_err("HWS error, vfid=%d/%d domain=%d/%d %p",
+				i, sdev.hws[i].vfid,
+				domain, sdev.hws[i].domain,
+				sdev.hws[i].bar0);
+			return -EINVAL;
+		}
+	}
+
+	info->domain = domain;
+	info->total_ssovfs = sdev.total_ssovfs;
+	info->total_ssowvfs = sdev.total_ssowvfs;
+	return 0;
+}
+
+void*
+octeontx_ssovf_bar(enum octeontx_ssovf_type type, uint8_t id, uint8_t bar)
+{
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY ||
+			type > OCTEONTX_SSO_HWS)
+		return NULL;
+
+	if (type == OCTEONTX_SSO_GROUP) {
+		if (id >= sdev.total_ssovfs)
+			return NULL;
+	} else {
+		if (id >= sdev.total_ssowvfs)
+			return NULL;
+	}
+
+	if (type == OCTEONTX_SSO_GROUP) {
+		switch (bar) {
+		case 0:
+			return sdev.grp[id].bar0;
+		case 2:
+			return sdev.grp[id].bar2;
+		default:
+			return NULL;
+		}
+	} else {
+		switch (bar) {
+		case 0:
+			return sdev.hws[id].bar0;
+		case 2:
+			return sdev.hws[id].bar2;
+		case 4:
+			return sdev.hws[id].bar4;
+		default:
+			return NULL;
+		}
+	}
+}
+
 /* SSOWVF pcie device aka event port probe */
 
 static int
-- 
2.5.5