[dpdk-dev] [PATCH v2 06/46] net/liquidio: liquidio device init

[Shijith Thotton]

Default device configuration and initialization code.

Signed-off-by: Shijith Thotton <shijith.thotton at caviumnetworks.com>
Signed-off-by: Jerin Jacob <jerin.jacob at caviumnetworks.com>
Signed-off-by: Derek Chickles <derek.chickles at caviumnetworks.com>
Signed-off-by: Venkat Koppula <venkat.koppula at caviumnetworks.com>
Signed-off-by: Srisivasubramanian S <ssrinivasan at caviumnetworks.com>
Signed-off-by: Mallesham Jatharakonda <mjatharakonda at oneconvergence.com>
---
 drivers/net/liquidio/Makefile           |  1 +
 drivers/net/liquidio/base/lio_23xx_vf.c | 67 ++++++++++++++++++++++++++
 drivers/net/liquidio/base/lio_23xx_vf.h | 84 +++++++++++++++++++++++++++++++++
 drivers/net/liquidio/base/lio_hw_defs.h | 34 +++++++++++++
 drivers/net/liquidio/lio_ethdev.c       | 61 +++++++++++++++++++++++-
 drivers/net/liquidio/lio_struct.h       | 70 +++++++++++++++++++++++++++
 6 files changed, 316 insertions(+), 1 deletion(-)
 create mode 100644 drivers/net/liquidio/base/lio_23xx_vf.c
 create mode 100644 drivers/net/liquidio/base/lio_23xx_vf.h

diff --git a/drivers/net/liquidio/Makefile b/drivers/net/liquidio/Makefile
index 25685a7..8880a10 100644
--- a/drivers/net/liquidio/Makefile
+++ b/drivers/net/liquidio/Makefile
@@ -51,6 +51,7 @@ VPATH += $(RTE_SDK)/drivers/net/liquidio/base
 # all source are stored in SRCS-y
 #
 SRCS-$(CONFIG_RTE_LIBRTE_LIO_PMD) += lio_ethdev.c
+SRCS-$(CONFIG_RTE_LIBRTE_LIO_PMD) += lio_23xx_vf.c
 
 # this lib depends upon:
 DEPDIRS-$(CONFIG_RTE_LIBRTE_LIO_PMD) += lib/librte_eal lib/librte_ether
diff --git a/drivers/net/liquidio/base/lio_23xx_vf.c b/drivers/net/liquidio/base/lio_23xx_vf.c
new file mode 100644
index 0000000..dd5e3a6
--- /dev/null
+++ b/drivers/net/liquidio/base/lio_23xx_vf.c
@@ -0,0 +1,67 @@
+/*
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2017 Cavium, Inc.. All rights reserved.
+ *   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 Cavium, 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(S) 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_ethdev.h>
+#include <rte_cycles.h>
+#include <rte_malloc.h>
+
+#include "lio_logs.h"
+#include "lio_23xx_vf.h"
+#include "lio_23xx_reg.h"
+
+int
+cn23xx_vf_setup_device(struct lio_device *lio_dev)
+{
+	uint64_t reg_val;
+
+	PMD_INIT_FUNC_TRACE();
+
+	/* INPUT_CONTROL[RPVF] gives the VF IOq count */
+	reg_val = lio_read_csr64(lio_dev, CN23XX_SLI_IQ_PKT_CONTROL64(0));
+
+	lio_dev->pf_num = (reg_val >> CN23XX_PKT_INPUT_CTL_PF_NUM_POS) &
+				CN23XX_PKT_INPUT_CTL_PF_NUM_MASK;
+	lio_dev->vf_num = (reg_val >> CN23XX_PKT_INPUT_CTL_VF_NUM_POS) &
+				CN23XX_PKT_INPUT_CTL_VF_NUM_MASK;
+
+	reg_val = reg_val >> CN23XX_PKT_INPUT_CTL_RPVF_POS;
+
+	lio_dev->sriov_info.rings_per_vf =
+				reg_val & CN23XX_PKT_INPUT_CTL_RPVF_MASK;
+
+	lio_dev->default_config = lio_get_conf(lio_dev);
+	if (lio_dev->default_config == NULL)
+		return -1;
+
+	return 0;
+}
diff --git a/drivers/net/liquidio/base/lio_23xx_vf.h b/drivers/net/liquidio/base/lio_23xx_vf.h
new file mode 100644
index 0000000..1c234bf
--- /dev/null
+++ b/drivers/net/liquidio/base/lio_23xx_vf.h
@@ -0,0 +1,84 @@
+/*
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2017 Cavium, Inc.. All rights reserved.
+ *   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 Cavium, 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(S) 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 _LIO_23XX_VF_H_
+#define _LIO_23XX_VF_H_
+
+#include <stdio.h>
+
+#include "lio_struct.h"
+
+static const struct lio_config default_cn23xx_conf	= {
+	.card_type				= LIO_23XX,
+	.card_name				= LIO_23XX_NAME,
+	/** IQ attributes */
+	.iq					= {
+		.max_iqs			= CN23XX_CFG_IO_QUEUES,
+		.pending_list_size		=
+			(CN23XX_MAX_IQ_DESCRIPTORS * CN23XX_CFG_IO_QUEUES),
+		.instr_type			= OCTEON_64BYTE_INSTR,
+	},
+
+	/** OQ attributes */
+	.oq					= {
+		.max_oqs			= CN23XX_CFG_IO_QUEUES,
+		.info_ptr			= OCTEON_OQ_INFOPTR_MODE,
+		.refill_threshold		= CN23XX_OQ_REFIL_THRESHOLD,
+	},
+
+	.num_nic_ports				= CN23XX_DEFAULT_NUM_PORTS,
+	.num_def_rx_descs			= CN23XX_MAX_OQ_DESCRIPTORS,
+	.num_def_tx_descs			= CN23XX_MAX_IQ_DESCRIPTORS,
+	.def_rx_buf_size			= CN23XX_OQ_BUF_SIZE,
+};
+
+static inline const struct lio_config *
+lio_get_conf(struct lio_device *lio_dev)
+{
+	const struct lio_config *default_lio_conf = NULL;
+
+	/* check the LIO Device model & return the corresponding lio
+	 * configuration
+	 */
+	default_lio_conf = &default_cn23xx_conf;
+
+	if (default_lio_conf == NULL) {
+		lio_dev_err(lio_dev, "Configuration verification failed\n");
+		return NULL;
+	}
+
+	return default_lio_conf;
+}
+
+int cn23xx_vf_setup_device(struct lio_device  *lio_dev);
+#endif /* _LIO_23XX_VF_H_  */
diff --git a/drivers/net/liquidio/base/lio_hw_defs.h b/drivers/net/liquidio/base/lio_hw_defs.h
index 9a7a894..a2654cd 100644
--- a/drivers/net/liquidio/base/lio_hw_defs.h
+++ b/drivers/net/liquidio/base/lio_hw_defs.h
@@ -42,6 +42,40 @@
 
 #define LIO_CN23XX_VF_VID	0x9712
 
+/* --------------------------CONFIG VALUES------------------------ */
+
+/* CN23xx IQ configuration macros */
+#define CN23XX_MAX_RINGS_PER_PF			64
+#define CN23XX_MAX_RINGS_PER_VF			8
+
+#define CN23XX_MAX_INPUT_QUEUES			CN23XX_MAX_RINGS_PER_PF
+#define CN23XX_MAX_IQ_DESCRIPTORS		512
+#define CN23XX_MIN_IQ_DESCRIPTORS		128
+
+#define CN23XX_MAX_OUTPUT_QUEUES		CN23XX_MAX_RINGS_PER_PF
+#define CN23XX_MAX_OQ_DESCRIPTORS		512
+#define CN23XX_MIN_OQ_DESCRIPTORS		128
+#define CN23XX_OQ_BUF_SIZE			1536
+
+#define CN23XX_OQ_REFIL_THRESHOLD		16
+
+#define CN23XX_DEFAULT_NUM_PORTS		1
+
+#define CN23XX_CFG_IO_QUEUES			CN23XX_MAX_RINGS_PER_PF
+
+/* common OCTEON configuration macros */
+#define OCTEON_64BYTE_INSTR			64
+#define OCTEON_OQ_INFOPTR_MODE			1
+
+/* Max IOQs per LIO Link */
+#define LIO_MAX_IOQS_PER_IF			64
+
+enum lio_card_type {
+	LIO_23XX /* 23xx */
+};
+
+#define LIO_23XX_NAME "23xx"
+
 #define LIO_DEVICE_NAME_LEN		32
 
 /* Routines for reading and writing CSRs */
diff --git a/drivers/net/liquidio/lio_ethdev.c b/drivers/net/liquidio/lio_ethdev.c
index 49efede..734f6c4 100644
--- a/drivers/net/liquidio/lio_ethdev.c
+++ b/drivers/net/liquidio/lio_ethdev.c
@@ -37,9 +37,63 @@
 #include <rte_alarm.h>
 
 #include "lio_logs.h"
-#include "lio_struct.h"
+#include "lio_23xx_vf.h"
 #include "lio_ethdev.h"
 
+/**
+ * \brief Identify the LIO device and to map the BAR address space
+ * @param lio_dev lio device
+ */
+static int
+lio_chip_specific_setup(struct lio_device *lio_dev)
+{
+	struct rte_pci_device *pdev = lio_dev->pci_dev;
+	uint32_t dev_id = pdev->id.device_id;
+	const char *s;
+	int ret = 1;
+
+	switch (dev_id) {
+	case LIO_CN23XX_VF_VID:
+		lio_dev->chip_id = LIO_CN23XX_VF_VID;
+		ret = cn23xx_vf_setup_device(lio_dev);
+		s = "CN23XX VF";
+		break;
+	default:
+		s = "?";
+		lio_dev_err(lio_dev, "Unsupported Chip\n");
+	}
+
+	if (!ret)
+		lio_dev_info(lio_dev, "DEVICE : %s\n", s);
+
+	return ret;
+}
+
+static int
+lio_first_time_init(struct lio_device *lio_dev,
+		    struct rte_pci_device *pdev)
+{
+	int dpdk_queues;
+
+	PMD_INIT_FUNC_TRACE();
+
+	/* set dpdk specific pci device pointer */
+	lio_dev->pci_dev = pdev;
+
+	/* Identify the LIO type and set device ops */
+	if (lio_chip_specific_setup(lio_dev)) {
+		lio_dev_err(lio_dev, "Chip specific setup failed\n");
+		return -1;
+	}
+
+	dpdk_queues = (int)lio_dev->sriov_info.rings_per_vf;
+
+	lio_dev->max_tx_queues = dpdk_queues;
+	lio_dev->max_rx_queues = dpdk_queues;
+
+	return 0;
+}
+
 static int
 lio_eth_dev_uninit(struct rte_eth_dev *eth_dev)
 {
@@ -84,6 +138,11 @@
 
 	lio_dev->port_id = eth_dev->data->port_id;
 
+	if (lio_first_time_init(lio_dev, pdev)) {
+		lio_dev_err(lio_dev, "Device init failed\n");
+		return -EINVAL;
+	}
+
 	eth_dev->data->mac_addrs = rte_zmalloc("lio", ETHER_ADDR_LEN, 0);
 	if (eth_dev->data->mac_addrs == NULL) {
 		lio_dev_err(lio_dev,
diff --git a/drivers/net/liquidio/lio_struct.h b/drivers/net/liquidio/lio_struct.h
index dcf99ce..a1203e4 100644
--- a/drivers/net/liquidio/lio_struct.h
+++ b/drivers/net/liquidio/lio_struct.h
@@ -43,16 +43,86 @@
 
 #include "lio_hw_defs.h"
 
+struct lio_sriov_info {
+	/** Number of rings assigned to VF */
+	uint32_t rings_per_vf;
+
+	/** Number of VF devices enabled */
+	uint32_t num_vfs;
+};
+
+/* Structure to define the configuration attributes for each Input queue. */
+struct lio_iq_config {
+	/* Max number of IQs available */
+	uint8_t max_iqs;
+
+	/** Pending list size (usually set to the sum of the size of all Input
+	 *  queues)
+	 */
+	uint32_t pending_list_size;
+
+	/** Command size - 32 or 64 bytes */
+	uint32_t instr_type;
+};
+
+/* Structure to define the configuration attributes for each Output queue. */
+struct lio_oq_config {
+	/* Max number of OQs available */
+	uint8_t max_oqs;
+
+	/** If set, the Output queue uses info-pointer mode. (Default: 1 ) */
+	uint32_t info_ptr;
+
+	/** The number of buffers that were consumed during packet processing by
+	 *  the driver on this Output queue before the driver attempts to
+	 *  replenish the descriptor ring with new buffers.
+	 */
+	uint32_t refill_threshold;
+};
+
+/* Structure to define the configuration. */
+struct lio_config {
+	uint16_t card_type;
+	const char *card_name;
+
+	/** Input Queue attributes. */
+	struct lio_iq_config iq;
+
+	/** Output Queue attributes. */
+	struct lio_oq_config oq;
+
+	int num_nic_ports;
+
+	int num_def_tx_descs;
+
+	/* Num of desc for rx rings */
+	int num_def_rx_descs;
+
+	int def_rx_buf_size;
+};
+
 /* -----------------------  THE LIO DEVICE  --------------------------- */
 /** The lio device.
  *  Each lio device has this structure to represent all its
  *  components.
  */
 struct lio_device {
+	/** PCI device pointer */
+	struct rte_pci_device *pci_dev;
+
+	/** Octeon Chip type */
+	uint16_t chip_id;
+	uint16_t pf_num;
+	uint16_t vf_num;
+
 	uint8_t *hw_addr;
 
+	struct lio_sriov_info sriov_info;
+
 	char dev_string[LIO_DEVICE_NAME_LEN]; /* Device print string */
 
+	const struct lio_config *default_config;
+
 	struct rte_eth_dev      *eth_dev;
 
 	uint8_t max_rx_queues;
-- 
1.8.3.1