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