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// SPDX-License-Identifier: GPL-2.0
/* Marvell OcteonTx2 RVU Ethernet driver
*
* Copyright (C) 2020 Marvell International Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/etherdevice.h>
#include <net/ip.h>
#include "otx2_reg.h"
#include "otx2_common.h"
#include "otx2_struct.h"
#include "otx2_txrx.h"
static int otx2_rx_napi_handler(struct otx2_nic *pfvf,
struct napi_struct *napi,
struct otx2_cq_queue *cq, int budget)
{
/* Nothing to do, for now */
return 0;
}
static int otx2_tx_napi_handler(struct otx2_nic *pfvf,
struct otx2_cq_queue *cq, int budget)
{
/* Nothing to do, for now */
return 0;
}
int otx2_napi_handler(struct napi_struct *napi, int budget)
{
struct otx2_cq_poll *cq_poll;
int workdone = 0, cq_idx, i;
struct otx2_cq_queue *cq;
struct otx2_qset *qset;
struct otx2_nic *pfvf;
cq_poll = container_of(napi, struct otx2_cq_poll, napi);
pfvf = (struct otx2_nic *)cq_poll->dev;
qset = &pfvf->qset;
for (i = CQS_PER_CINT - 1; i >= 0; i--) {
cq_idx = cq_poll->cq_ids[i];
if (unlikely(cq_idx == CINT_INVALID_CQ))
continue;
cq = &qset->cq[cq_idx];
if (cq->cq_type == CQ_RX) {
workdone += otx2_rx_napi_handler(pfvf, napi,
cq, budget);
} else {
workdone += otx2_tx_napi_handler(pfvf, cq, budget);
}
}
/* Clear the IRQ */
otx2_write64(pfvf, NIX_LF_CINTX_INT(cq_poll->cint_idx), BIT_ULL(0));
if (workdone < budget && napi_complete_done(napi, workdone)) {
/* Re-enable interrupts */
otx2_write64(pfvf, NIX_LF_CINTX_ENA_W1S(cq_poll->cint_idx),
BIT_ULL(0));
}
return workdone;
}
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