diff options
Diffstat (limited to 'drivers/net/bnxt/bnxt_irq.c')
| -rw-r--r-- | drivers/net/bnxt/bnxt_irq.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/drivers/net/bnxt/bnxt_irq.c b/drivers/net/bnxt/bnxt_irq.c new file mode 100644 index 00000000..e93585a0 --- /dev/null +++ b/drivers/net/bnxt/bnxt_irq.c @@ -0,0 +1,156 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2014-2015 Broadcom Corporation. + * 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 <inttypes.h> + +#include <rte_malloc.h> + +#include "bnxt.h" +#include "bnxt_cpr.h" +#include "bnxt_irq.h" +#include "bnxt_ring.h" +#include "hsi_struct_def_dpdk.h" + +/* + * Interrupts + */ + +static void bnxt_int_handler(struct rte_intr_handle *handle __rte_unused, + void *param) +{ + struct rte_eth_dev *eth_dev = (struct rte_eth_dev *)param; + struct bnxt *bp = (struct bnxt *)eth_dev->data->dev_private; + struct bnxt_cp_ring_info *cpr = bp->def_cp_ring; + uint32_t raw_cons = cpr->cp_raw_cons; + uint32_t cons; + struct cmpl_base *cmp; + + while (1) { + cons = RING_CMP(cpr->cp_ring_struct, raw_cons); + cmp = &cpr->cp_desc_ring[cons]; + + if (!CMP_VALID(cmp, raw_cons, cpr->cp_ring_struct)) + break; + + switch (CMP_TYPE(cmp)) { + case CMPL_BASE_TYPE_HWRM_ASYNC_EVENT: + /* Handle any async event */ + bnxt_handle_async_event(bp, cmp); + break; + case CMPL_BASE_TYPE_HWRM_FWD_RESP: + /* Handle HWRM forwarded responses */ + bnxt_handle_fwd_req(bp, cmp); + break; + default: + /* Ignore any other events */ + break; + } + raw_cons = NEXT_RAW_CMP(raw_cons); + } + B_CP_DB_REARM(cpr, cpr->cp_raw_cons); +} + +void bnxt_free_int(struct bnxt *bp) +{ + struct bnxt_irq *irq; + + irq = bp->irq_tbl; + if (irq) { + if (irq->requested) { + rte_intr_disable(&bp->pdev->intr_handle); + rte_intr_callback_unregister(&bp->pdev->intr_handle, + irq->handler, + (void *)bp->eth_dev); + irq->requested = 0; + } + rte_free((void *)bp->irq_tbl); + bp->irq_tbl = NULL; + } +} + +void bnxt_disable_int(struct bnxt *bp) +{ + struct bnxt_cp_ring_info *cpr = bp->def_cp_ring; + + /* Only the default completion ring */ + B_CP_DIS_DB(cpr, cpr->cp_raw_cons); +} + +void bnxt_enable_int(struct bnxt *bp) +{ + struct bnxt_cp_ring_info *cpr = bp->def_cp_ring; + + B_CP_DB_REARM(cpr, cpr->cp_raw_cons); +} + +int bnxt_setup_int(struct bnxt *bp) +{ + uint16_t total_vecs; + const int len = sizeof(bp->irq_tbl[0].name); + int i, rc = 0; + + /* DPDK host only supports 1 MSI-X vector */ + total_vecs = 1; + bp->irq_tbl = rte_calloc("bnxt_irq_tbl", total_vecs, + sizeof(struct bnxt_irq), 0); + if (bp->irq_tbl) { + for (i = 0; i < total_vecs; i++) { + bp->irq_tbl[i].vector = i; + snprintf(bp->irq_tbl[i].name, len, + "%s-%d", bp->eth_dev->data->name, i); + bp->irq_tbl[i].handler = bnxt_int_handler; + } + } else { + rc = -ENOMEM; + goto setup_exit; + } + return 0; + +setup_exit: + RTE_LOG(ERR, PMD, "bnxt_irq_tbl setup failed"); + return rc; +} + +int bnxt_request_int(struct bnxt *bp) +{ + int rc = 0; + + struct bnxt_irq *irq = bp->irq_tbl; + + rte_intr_callback_register(&bp->pdev->intr_handle, irq->handler, + (void *)bp->eth_dev); + rte_intr_enable(&bp->pdev->intr_handle); + + irq->requested = 1; + return rc; +} |