From 8b25d1ad5d2264bdfc2818c7bda74ee2697df6db Mon Sep 17 00:00:00 2001 From: Christian Ehrhardt Date: Wed, 6 Jul 2016 09:22:35 +0200 Subject: Imported Upstream version 16.07-rc1 Change-Id: I40a523e52f12e8496fdd69e902824b0226c303de Signed-off-by: Christian Ehrhardt --- drivers/net/bnxt/bnxt_ring.c | 306 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 306 insertions(+) create mode 100644 drivers/net/bnxt/bnxt_ring.c (limited to 'drivers/net/bnxt/bnxt_ring.c') 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 + +#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; +} -- cgit 1.2.3-korg