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/*-
* 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(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;
struct cmpl_base *cmp;
uint32_t raw_cons;
uint32_t cons;
if (cpr == NULL)
return;
raw_cons = cpr->cp_raw_cons;
while (1) {
if (!cpr || !cpr->cp_ring_struct)
return;
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_REQ:
/* Handle HWRM forwarded responses */
bnxt_handle_fwd_req(bp, cmp);
break;
default:
/* Ignore any other events */
if (cmp->type & rte_cpu_to_le_16(0x01)) {
if (!CMP_VALID(cmp, raw_cons,
cpr->cp_ring_struct))
goto no_more;
}
RTE_LOG(INFO, PMD,
"Ignoring %02x completion\n", CMP_TYPE(cmp));
break;
}
raw_cons = NEXT_RAW_CMP(raw_cons);
};
no_more:
cpr->cp_raw_cons = 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 */
if (cpr != NULL && cpr->cp_doorbell != NULL)
B_CP_DB_DISARM(cpr);
}
void bnxt_enable_int(struct bnxt *bp)
{
struct bnxt_cp_ring_info *cpr = bp->def_cp_ring;
B_CP_DB_ARM(cpr);
}
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->device->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\n");
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;
}
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