[PATCH 08/20 v2] bus/fslmc: register dpci as dpaa2 device for bus scan

[Nipun Gupta <nipun.gupta@nxp.com>]

Registering dpci as dpaa2 type device handling initialization,
allocation and freeing of the device

Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
---
 drivers/bus/fslmc/Makefile               |   1 +
 drivers/bus/fslmc/fslmc_vfio.h           |   1 +
 drivers/bus/fslmc/portal/dpaa2_hw_dpci.c | 179 +++++++++++++++++++++++++++++++
 drivers/bus/fslmc/portal/dpaa2_hw_pvt.h  |  15 +++
 4 files changed, 196 insertions(+)
 create mode 100644 drivers/bus/fslmc/portal/dpaa2_hw_dpci.c

diff --git a/drivers/bus/fslmc/Makefile b/drivers/bus/fslmc/Makefile
index f0ad576..364c214 100644
--- a/drivers/bus/fslmc/Makefile
+++ b/drivers/bus/fslmc/Makefile
@@ -71,6 +71,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += \
 
 SRCS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += portal/dpaa2_hw_dpio.c
 SRCS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += portal/dpaa2_hw_dpbp.c
+SRCS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += portal/dpaa2_hw_dpci.c
 SRCS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += fslmc_vfio.c
 SRCS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += fslmc_bus.c
 
diff --git a/drivers/bus/fslmc/fslmc_vfio.h b/drivers/bus/fslmc/fslmc_vfio.h
index eddce31..7c725f4 100644
--- a/drivers/bus/fslmc/fslmc_vfio.h
+++ b/drivers/bus/fslmc/fslmc_vfio.h
@@ -42,6 +42,7 @@
 #define DPAA2_MC_DPCON_DEVID	5
 #define DPAA2_MC_DPIO_DEVID	9
 #define DPAA2_MC_DPBP_DEVID	10
+#define DPAA2_MC_DPCI_DEVID	11
 
 #define VFIO_MAX_GRP 1
 
diff --git a/drivers/bus/fslmc/portal/dpaa2_hw_dpci.c b/drivers/bus/fslmc/portal/dpaa2_hw_dpci.c
new file mode 100644
index 0000000..d222f26
--- /dev/null
+++ b/drivers/bus/fslmc/portal/dpaa2_hw_dpci.c
@@ -0,0 +1,179 @@
+/*-
+ *   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 Freescale Semiconductor, Inc 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_logs.h>
+#include <fslmc_vfio.h>
+#include <mc/fsl_dpci.h>
+#include "portal/dpaa2_hw_pvt.h"
+#include "portal/dpaa2_hw_dpio.h"
+
+TAILQ_HEAD(dpci_dev_list, dpaa2_dpci_dev);
+static struct dpci_dev_list dpci_dev_list
+	= TAILQ_HEAD_INITIALIZER(dpci_dev_list); /*!< DPCI device list */
+
+static int
+rte_dpaa2_create_dpci_device(struct fslmc_vfio_device *vdev __rte_unused,
+			     struct vfio_device_info *obj_info __rte_unused,
+				int dpci_id)
+{
+	struct dpaa2_dpci_dev *dpci_node;
+	struct dpci_attr attr;
+	struct dpci_rx_queue_cfg rx_queue_cfg;
+	struct dpci_rx_queue_attr rx_attr;
+	int ret, i;
+
+	/* Allocate DPAA2 dpci handle */
+	dpci_node = rte_malloc(NULL, sizeof(struct dpaa2_dpci_dev), 0);
+	if (!dpci_node) {
+		PMD_INIT_LOG(ERR, "Memory allocation failed for DPCI Device");
+		return -1;
+	}
+
+	/* Open the dpci object */
+	dpci_node->dpci.regs = rte_mcp_ptr_list[MC_PORTAL_INDEX];
+	ret = dpci_open(&dpci_node->dpci,
+			CMD_PRI_LOW, dpci_id, &dpci_node->token);
+	if (ret) {
+		PMD_INIT_LOG(ERR, "Resource alloc failure with err code: %d",
+			     ret);
+		rte_free(dpci_node);
+		return -1;
+	}
+
+	/* Get the device attributes */
+	ret = dpci_get_attributes(&dpci_node->dpci,
+				  CMD_PRI_LOW, dpci_node->token, &attr);
+	if (ret != 0) {
+		PMD_INIT_LOG(ERR, "Reading device failed with err code: %d",
+			     ret);
+		rte_free(dpci_node);
+		return -1;
+	}
+
+	/* Set up the Rx Queue */
+	memset(&rx_queue_cfg, 0, sizeof(struct dpci_rx_queue_cfg));
+	ret = dpci_set_rx_queue(&dpci_node->dpci,
+				CMD_PRI_LOW,
+				dpci_node->token,
+				0, &rx_queue_cfg);
+	if (ret) {
+		PMD_INIT_LOG(ERR, "Setting Rx queue failed with err code: %d",
+			     ret);
+		rte_free(dpci_node);
+		return -1;
+	}
+
+	/* Enable the device */
+	ret = dpci_enable(&dpci_node->dpci,
+			  CMD_PRI_LOW, dpci_node->token);
+	if (ret != 0) {
+		PMD_INIT_LOG(ERR, "Enabling device failed with err code: %d",
+			     ret);
+		rte_free(dpci_node);
+		return -1;
+	}
+
+	for (i = 0; i < DPAA2_DPCI_MAX_QUEUES; i++) {
+		/* Get the Rx FQID's */
+		ret = dpci_get_rx_queue(&dpci_node->dpci,
+					CMD_PRI_LOW,
+					dpci_node->token, i,
+					&rx_attr);
+		if (ret != 0) {
+			PMD_INIT_LOG(ERR,
+				     "Reading device failed with err code: %d",
+				ret);
+			rte_free(dpci_node);
+			return -1;
+		}
+
+		dpci_node->queue[i].fqid = rx_attr.fqid;
+	}
+
+	dpci_node->dpci_id = dpci_id;
+	rte_atomic16_init(&dpci_node->in_use);
+
+	TAILQ_INSERT_TAIL(&dpci_dev_list, dpci_node, next);
+
+	PMD_INIT_LOG(DEBUG, "DPAA2: Added [dpci-%d]", dpci_id);
+
+	return 0;
+}
+
+struct dpaa2_dpci_dev *rte_dpaa2_alloc_dpci_dev(void)
+{
+	struct dpaa2_dpci_dev *dpci_dev = NULL;
+
+	/* Get DPCI dev handle from list using index */
+	TAILQ_FOREACH(dpci_dev, &dpci_dev_list, next) {
+		if (dpci_dev && rte_atomic16_test_and_set(&dpci_dev->in_use))
+			break;
+	}
+
+	return dpci_dev;
+}
+
+void rte_dpaa2_free_dpci_dev(struct dpaa2_dpci_dev *dpci)
+{
+	struct dpaa2_dpci_dev *dpci_dev = NULL;
+
+	/* Match DPCI handle and mark it free */
+	TAILQ_FOREACH(dpci_dev, &dpci_dev_list, next) {
+		if (dpci_dev == dpci) {
+			rte_atomic16_dec(&dpci_dev->in_use);
+			return;
+		}
+	}
+}
+
+static struct rte_dpaa2_object rte_dpaa2_dpci_obj = {
+	.object_id = DPAA2_MC_DPCI_DEVID,
+	.create = rte_dpaa2_create_dpci_device,
+};
+
+RTE_PMD_REGISTER_DPAA2_OBJECT(dpci, rte_dpaa2_dpci_obj);
diff --git a/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h b/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
index c022373..9f9df50 100644
--- a/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
+++ b/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
@@ -75,6 +75,8 @@
 #define DPAA2_HW_BUF_RESERVE	0
 #define DPAA2_PACKET_LAYOUT_ALIGN	64 /*changing from 256 */
 
+#define DPAA2_DPCI_MAX_QUEUES 2
+
 struct dpaa2_dpio_dev {
 	TAILQ_ENTRY(dpaa2_dpio_dev) next;
 		/**< Pointer to Next device instance */
@@ -123,6 +125,16 @@ struct dpaa2_queue {
 	struct queue_storage_info_t *q_storage;
 };
 
+struct dpaa2_dpci_dev {
+	TAILQ_ENTRY(dpaa2_dpci_dev) next;
+		/**< Pointer to Next device instance */
+	struct fsl_mc_io dpci;  /** handle to DPCI portal object */
+	uint16_t token;
+	rte_atomic16_t in_use;
+	uint32_t dpci_id; /*HW ID for DPCI object */
+	struct dpaa2_queue queue[DPAA2_DPCI_MAX_QUEUES];
+};
+
 /*! Global MCP list */
 extern void *(*rte_mcp_ptr_list);
 
@@ -267,4 +279,7 @@ static phys_addr_t dpaa2_mem_vtop(uint64_t vaddr)
 struct dpaa2_dpbp_dev *dpaa2_alloc_dpbp_dev(void);
 void dpaa2_free_dpbp_dev(struct dpaa2_dpbp_dev *dpbp);
 
+struct dpaa2_dpci_dev *rte_dpaa2_alloc_dpci_dev(void);
+void rte_dpaa2_free_dpci_dev(struct dpaa2_dpci_dev *dpci);
+
 #endif
-- 
1.9.1