[PATCH v2 07/40] bnxt: declare ring structs and free() func

[Stephen Hurd <stephen.hurd@broadcom.com>]

Declare ring structures and a ring free() function.

Signed-off-by: Stephen Hurd <stephen.hurd@broadcom.com>
Reviewed-by: Ajit Kumar Khaparde <ajit.khaparde@broadcom.com>
---
 drivers/net/bnxt/Makefile    |  1 +
 drivers/net/bnxt/bnxt_ring.c | 51 ++++++++++++++++++++++++
 drivers/net/bnxt/bnxt_ring.h | 92 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 144 insertions(+)
 create mode 100644 drivers/net/bnxt/bnxt_ring.c
 create mode 100644 drivers/net/bnxt/bnxt_ring.h

diff --git a/drivers/net/bnxt/Makefile b/drivers/net/bnxt/Makefile
index c57afaa..757ea62 100644
--- a/drivers/net/bnxt/Makefile
+++ b/drivers/net/bnxt/Makefile
@@ -50,6 +50,7 @@ EXPORT_MAP := rte_pmd_bnxt_version.map
 #
 SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += bnxt_ethdev.c
 SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += bnxt_hwrm.c
+SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += bnxt_ring.c
 SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += bnxt_vnic.c
 
 #
diff --git a/drivers/net/bnxt/bnxt_ring.c b/drivers/net/bnxt/bnxt_ring.c
new file mode 100644
index 0000000..0434b07
--- /dev/null
+++ b/drivers/net/bnxt/bnxt_ring.c
@@ -0,0 +1,51 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) Broadcom Limited.
+ *   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 Broadcom Corporation 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 "bnxt.h"
+#include "bnxt_ring.h"
+
+/*
+ * Generic ring handling
+ */
+
+void bnxt_free_ring(struct bnxt_ring_struct *ring)
+{
+	/* The actual ring is reserved via rte_memzone_reserve API.
+	   The current document/code indicates that:
+	   "Note: A reserved zone cannot be freed."
+	 */
+	if (ring->vmem_size && *ring->vmem) {
+		memset((char *)*ring->vmem, 0, ring->vmem_size);
+		*ring->vmem = NULL;
+	}
+}
diff --git a/drivers/net/bnxt/bnxt_ring.h b/drivers/net/bnxt/bnxt_ring.h
new file mode 100644
index 0000000..f44025c
--- /dev/null
+++ b/drivers/net/bnxt/bnxt_ring.h
@@ -0,0 +1,92 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) Broadcom Limited.
+ *   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 Broadcom Corporation 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 _BNXT_RING_H_
+#define _BNXT_RING_H_
+
+#include <inttypes.h>
+
+#include <rte_memory.h>
+
+#define RING_NEXT(ring, idx)		(((idx) + 1) & (ring)->ring_mask)
+
+#define RTE_MBUF_DATA_DMA_ADDR(mb) \
+	((uint64_t) ((mb)->buf_physaddr + (mb)->data_off))
+
+#define DB_IDX_MASK						0xffffff
+#define DB_IDX_VALID						(0x1<<26)
+#define DB_IRQ_DIS						(0x1<<27)
+#define DB_KEY_TX						(0x0<<28)
+#define DB_KEY_RX						(0x1<<28)
+#define DB_KEY_CP						(0x2<<28)
+#define DB_KEY_ST						(0x3<<28)
+#define DB_KEY_TX_PUSH						(0x4<<28)
+#define DB_LONG_TX_PUSH						(0x2<<24)
+
+#define DEFAULT_CP_RING_SIZE	256
+#define DEFAULT_RX_RING_SIZE	256
+#define DEFAULT_TX_RING_SIZE	256
+
+#define MAX_TPA		128
+
+/* TODO: These are derived from the Linux driver assuming 4k pages */
+#define MAX_RX_DESC_CNT (8 * 1024)
+#define MAX_TX_DESC_CNT (4 * 1024)
+#define MAX_CP_DESC_CNT (16 * 1024)
+
+#define INVALID_HW_RING_ID      ((uint16_t) -1)
+
+struct bnxt_ring_struct {
+	void			*bd;
+	phys_addr_t		bd_dma;
+	uint32_t		ring_size;
+	uint32_t		ring_mask;
+
+	int			vmem_size;
+	void			**vmem;
+
+	uint16_t		fw_ring_id; /* Ring id filled by Chimp FW */
+};
+
+struct bnxt_ring_grp_info {
+	uint16_t	fw_stats_ctx;
+	uint16_t	fw_grp_id;
+	uint16_t	rx_fw_ring_id;
+	uint16_t	cp_fw_ring_id;
+	uint16_t	ag_fw_ring_id;
+};
+
+struct bnxt;
+void bnxt_free_ring(struct bnxt_ring_struct *ring);
+
+#endif
-- 
1.9.1