1 files changed, 306 insertions, 0 deletions

diff --git a/drivers/net/bnxt/bnxt_ring.c b/drivers/net/bnxt/bnxt_ring.c
new file mode 100644
index 00000000..3f81ffcc
--- /dev/null
+++ b/drivers/net/bnxt/bnxt_ring.c
@@ -0,0 +1,306 @@
+/*-
+ *   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 <rte_memzone.h>
+
+#include "bnxt.h"
+#include "bnxt_cpr.h"
+#include "bnxt_hwrm.h"
+#include "bnxt_ring.h"
+#include "bnxt_rxq.h"
+#include "bnxt_rxr.h"
+#include "bnxt_txq.h"
+#include "bnxt_txr.h"
+
+#include "hsi_struct_def_dpdk.h"
+
+/*
+ * Generic ring handling
+ */
+
+void bnxt_free_ring(struct bnxt_ring *ring)
+{
+	if (ring->vmem_size && *ring->vmem) {
+		memset((char *)*ring->vmem, 0, ring->vmem_size);
+		*ring->vmem = NULL;
+	}
+	rte_memzone_free((const struct rte_memzone *)ring->mem_zone);
+}
+
+/*
+ * Ring groups
+ */
+
+void bnxt_init_ring_grps(struct bnxt *bp)
+{
+	unsigned int i;
+
+	for (i = 0; i < bp->max_ring_grps; i++)
+		memset(&bp->grp_info[i], (uint8_t)HWRM_NA_SIGNATURE,
+		       sizeof(struct bnxt_ring_grp_info));
+}
+
+/*
+ * Allocates a completion ring with vmem and stats optionally also allocating
+ * a TX and/or RX ring.  Passing NULL as tx_ring_info and/or rx_ring_info
+ * to not allocate them.
+ *
+ * Order in the allocation is:
+ * stats - Always non-zero length
+ * cp vmem - Always zero-length, supported for the bnxt_ring abstraction
+ * tx vmem - Only non-zero length if tx_ring_info is not NULL
+ * rx vmem - Only non-zero length if rx_ring_info is not NULL
+ * cp bd ring - Always non-zero length
+ * tx bd ring - Only non-zero length if tx_ring_info is not NULL
+ * rx bd ring - Only non-zero length if rx_ring_info is not NULL
+ */
+int bnxt_alloc_rings(struct bnxt *bp, uint16_t qidx,
+			    struct bnxt_tx_ring_info *tx_ring_info,
+			    struct bnxt_rx_ring_info *rx_ring_info,
+			    struct bnxt_cp_ring_info *cp_ring_info,
+			    const char *suffix)
+{
+	struct bnxt_ring *cp_ring = cp_ring_info->cp_ring_struct;
+	struct bnxt_ring *tx_ring;
+	struct bnxt_ring *rx_ring;
+	struct rte_pci_device *pdev = bp->pdev;
+	const struct rte_memzone *mz = NULL;
+	char mz_name[RTE_MEMZONE_NAMESIZE];
+
+	int stats_len = (tx_ring_info || rx_ring_info) ?
+	    RTE_CACHE_LINE_ROUNDUP(sizeof(struct ctx_hw_stats64)) : 0;
+
+	int cp_vmem_start = stats_len;
+	int cp_vmem_len = RTE_CACHE_LINE_ROUNDUP(cp_ring->vmem_size);
+
+	int tx_vmem_start = cp_vmem_start + cp_vmem_len;
+	int tx_vmem_len =
+	    tx_ring_info ? RTE_CACHE_LINE_ROUNDUP(tx_ring_info->
+						tx_ring_struct->vmem_size) : 0;
+
+	int rx_vmem_start = tx_vmem_start + tx_vmem_len;
+	int rx_vmem_len = rx_ring_info ?
+		RTE_CACHE_LINE_ROUNDUP(rx_ring_info->
+						rx_ring_struct->vmem_size) : 0;
+
+	int cp_ring_start = rx_vmem_start + rx_vmem_len;
+	int cp_ring_len = RTE_CACHE_LINE_ROUNDUP(cp_ring->ring_size *
+						 sizeof(struct cmpl_base));
+
+	int tx_ring_start = cp_ring_start + cp_ring_len;
+	int tx_ring_len = tx_ring_info ?
+	    RTE_CACHE_LINE_ROUNDUP(tx_ring_info->tx_ring_struct->ring_size *
+				   sizeof(struct tx_bd_long)) : 0;
+
+	int rx_ring_start = tx_ring_start + tx_ring_len;
+	int rx_ring_len =  rx_ring_info ?
+		RTE_CACHE_LINE_ROUNDUP(rx_ring_info->rx_ring_struct->ring_size *
+		sizeof(struct rx_prod_pkt_bd)) : 0;
+
+	int total_alloc_len = rx_ring_start + rx_ring_len;
+
+	snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
+		 "bnxt_%04x:%02x:%02x:%02x-%04x_%s", pdev->addr.domain,
+		 pdev->addr.bus, pdev->addr.devid, pdev->addr.function, qidx,
+		 suffix);
+	mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
+	mz = rte_memzone_lookup(mz_name);
+	if (!mz) {
+		mz = rte_memzone_reserve(mz_name, total_alloc_len,
+					 SOCKET_ID_ANY,
+					 RTE_MEMZONE_2MB |
+					 RTE_MEMZONE_SIZE_HINT_ONLY);
+		if (mz == NULL)
+			return -ENOMEM;
+	}
+	memset(mz->addr, 0, mz->len);
+
+	if (tx_ring_info) {
+		tx_ring = tx_ring_info->tx_ring_struct;
+
+		tx_ring->bd = ((char *)mz->addr + tx_ring_start);
+		tx_ring_info->tx_desc_ring = (struct tx_bd_long *)tx_ring->bd;
+		tx_ring->bd_dma = mz->phys_addr + tx_ring_start;
+		tx_ring_info->tx_desc_mapping = tx_ring->bd_dma;
+		tx_ring->mem_zone = (const void *)mz;
+
+		if (!tx_ring->bd)
+			return -ENOMEM;
+		if (tx_ring->vmem_size) {
+			tx_ring->vmem =
+			    (void **)((char *)mz->addr + tx_vmem_start);
+			tx_ring_info->tx_buf_ring =
+			    (struct bnxt_sw_tx_bd *)tx_ring->vmem;
+		}
+	}
+
+	if (rx_ring_info) {
+		rx_ring = rx_ring_info->rx_ring_struct;
+
+		rx_ring->bd = ((char *)mz->addr + rx_ring_start);
+		rx_ring_info->rx_desc_ring =
+		    (struct rx_prod_pkt_bd *)rx_ring->bd;
+		rx_ring->bd_dma = mz->phys_addr + rx_ring_start;
+		rx_ring_info->rx_desc_mapping = rx_ring->bd_dma;
+		rx_ring->mem_zone = (const void *)mz;
+
+		if (!rx_ring->bd)
+			return -ENOMEM;
+		if (rx_ring->vmem_size) {
+			rx_ring->vmem =
+			    (void **)((char *)mz->addr + rx_vmem_start);
+			rx_ring_info->rx_buf_ring =
+			    (struct bnxt_sw_rx_bd *)rx_ring->vmem;
+		}
+	}
+
+	cp_ring->bd = ((char *)mz->addr + cp_ring_start);
+	cp_ring->bd_dma = mz->phys_addr + cp_ring_start;
+	cp_ring_info->cp_desc_ring = cp_ring->bd;
+	cp_ring_info->cp_desc_mapping = cp_ring->bd_dma;
+	cp_ring->mem_zone = (const void *)mz;
+
+	if (!cp_ring->bd)
+		return -ENOMEM;
+	if (cp_ring->vmem_size)
+		*cp_ring->vmem = ((char *)mz->addr + stats_len);
+	if (stats_len) {
+		cp_ring_info->hw_stats = mz->addr;
+		cp_ring_info->hw_stats_map = mz->phys_addr;
+	}
+	cp_ring_info->hw_stats_ctx_id = HWRM_NA_SIGNATURE;
+	return 0;
+}
+
+/* ring_grp usage:
+ * [0] = default completion ring
+ * [1 -> +rx_cp_nr_rings] = rx_cp, rx rings
+ * [1+rx_cp_nr_rings + 1 -> +tx_cp_nr_rings] = tx_cp, tx rings
+ */
+int bnxt_alloc_hwrm_rings(struct bnxt *bp)
+{
+	unsigned int i;
+	int rc = 0;
+
+	/* Default completion ring */
+	{
+		struct bnxt_cp_ring_info *cpr = bp->def_cp_ring;
+		struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
+
+		rc = bnxt_hwrm_ring_alloc(bp, cp_ring,
+					  HWRM_RING_ALLOC_INPUT_RING_TYPE_CMPL,
+					  0, HWRM_NA_SIGNATURE);
+		if (rc)
+			goto err_out;
+		cpr->cp_doorbell =
+		    (char *)bp->eth_dev->pci_dev->mem_resource[2].addr;
+		B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
+		bp->grp_info[0].cp_fw_ring_id = cp_ring->fw_ring_id;
+	}
+
+	for (i = 0; i < bp->rx_cp_nr_rings; i++) {
+		struct bnxt_rx_queue *rxq = bp->rx_queues[i];
+		struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
+		struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
+		struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
+		struct bnxt_ring *ring = rxr->rx_ring_struct;
+		unsigned int idx = i + 1;
+
+		/* Rx cmpl */
+		rc = bnxt_hwrm_ring_alloc(bp, cp_ring,
+					HWRM_RING_ALLOC_INPUT_RING_TYPE_CMPL,
+					idx, HWRM_NA_SIGNATURE);
+		if (rc)
+			goto err_out;
+		cpr->cp_doorbell =
+		    (char *)bp->eth_dev->pci_dev->mem_resource[2].addr +
+		    idx * 0x80;
+		bp->grp_info[idx].cp_fw_ring_id = cp_ring->fw_ring_id;
+		B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
+
+		/* Rx ring */
+		rc = bnxt_hwrm_ring_alloc(bp, ring,
+					HWRM_RING_ALLOC_INPUT_RING_TYPE_RX,
+					idx, cpr->hw_stats_ctx_id);
+		if (rc)
+			goto err_out;
+		rxr->rx_prod = 0;
+		rxr->rx_doorbell =
+		    (char *)bp->eth_dev->pci_dev->mem_resource[2].addr +
+		    idx * 0x80;
+		bp->grp_info[idx].rx_fw_ring_id = ring->fw_ring_id;
+		B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
+		if (bnxt_init_one_rx_ring(rxq)) {
+			RTE_LOG(ERR, PMD, "bnxt_init_one_rx_ring failed!");
+			bnxt_rx_queue_release_op(rxq);
+			return -ENOMEM;
+		}
+		B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
+	}
+
+	for (i = 0; i < bp->tx_cp_nr_rings; i++) {
+		struct bnxt_tx_queue *txq = bp->tx_queues[i];
+		struct bnxt_cp_ring_info *cpr = txq->cp_ring;
+		struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
+		struct bnxt_tx_ring_info *txr = txq->tx_ring;
+		struct bnxt_ring *ring = txr->tx_ring_struct;
+		unsigned int idx = 1 + bp->rx_cp_nr_rings + i;
+
+		/* Tx cmpl */
+		rc = bnxt_hwrm_ring_alloc(bp, cp_ring,
+					HWRM_RING_ALLOC_INPUT_RING_TYPE_CMPL,
+					idx, HWRM_NA_SIGNATURE);
+		if (rc)
+			goto err_out;
+
+		cpr->cp_doorbell =
+		    (char *)bp->eth_dev->pci_dev->mem_resource[2].addr +
+		    idx * 0x80;
+		bp->grp_info[idx].cp_fw_ring_id = cp_ring->fw_ring_id;
+		B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
+
+		/* Tx ring */
+		rc = bnxt_hwrm_ring_alloc(bp, ring,
+					HWRM_RING_ALLOC_INPUT_RING_TYPE_TX,
+					idx, cpr->hw_stats_ctx_id);
+		if (rc)
+			goto err_out;
+
+		txr->tx_doorbell =
+		    (char *)bp->eth_dev->pci_dev->mem_resource[2].addr +
+		    idx * 0x80;
+	}
+
+err_out:
+	return rc;
+}