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459 lines
13 KiB
C
459 lines
13 KiB
C
/* $NetBSD: octeon_ipd.c,v 1.2 2015/06/01 22:55:12 matt Exp $ */
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/*
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* Copyright (c) 2007 Internet Initiative Japan, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: octeon_ipd.c,v 1.2 2015/06/01 22:55:12 matt Exp $");
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#include "opt_octeon.h"
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#include "opt_octeon.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <mips/locore.h>
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#include <mips/cavium/octeonvar.h>
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#include <mips/cavium/dev/octeon_ciureg.h>
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#include <mips/cavium/dev/octeon_fpavar.h>
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#include <mips/cavium/dev/octeon_pipreg.h>
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#include <mips/cavium/dev/octeon_ipdreg.h>
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#include <mips/cavium/dev/octeon_ipdvar.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#define IP_OFFSET(data, word2) \
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((uintptr_t)(data) + (uintptr_t)((word2 & PIP_WQE_WORD2_IP_OFFSET) >> PIP_WQE_WORD2_IP_OFFSET_SHIFT))
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#ifdef OCTEON_ETH_DEBUG
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void octeon_ipd_intr_evcnt_attach(struct octeon_ipd_softc *);
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void octeon_ipd_intr_rml(void *);
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int octeon_ipd_intr_drop(void *);
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void octeon_ipd_dump(void);
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static void *octeon_ipd_intr_drop_ih;
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struct evcnt octeon_ipd_intr_drop_evcnt =
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EVCNT_INITIALIZER(EVCNT_TYPE_INTR, NULL, "octeon",
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"ipd drop intr");
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EVCNT_ATTACH_STATIC(octeon_ipd_intr_drop_evcnt);
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struct octeon_ipd_softc *__octeon_ipd_softc[3/* XXX */];
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#endif
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/* XXX */
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void
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octeon_ipd_init(struct octeon_ipd_attach_args *aa,
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struct octeon_ipd_softc **rsc)
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{
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struct octeon_ipd_softc *sc;
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int status;
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sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO);
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if (sc == NULL)
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panic("can't allocate memory: %s", __func__);
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sc->sc_port = aa->aa_port;
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sc->sc_regt = aa->aa_regt;
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sc->sc_first_mbuff_skip = aa->aa_first_mbuff_skip;
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sc->sc_not_first_mbuff_skip = aa->aa_not_first_mbuff_skip;
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status = bus_space_map(sc->sc_regt, IPD_BASE, IPD_SIZE, 0,
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&sc->sc_regh);
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if (status != 0)
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panic("can't map %s space", "ipd register");
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*rsc = sc;
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#ifdef OCTEON_ETH_DEBUG
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octeon_ipd_int_enable(sc, 1);
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octeon_ipd_intr_evcnt_attach(sc);
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if (octeon_ipd_intr_drop_ih == NULL)
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octeon_ipd_intr_drop_ih = octeon_intr_establish(
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ffs64(CIU_INTX_SUM0_IPD_DRP) - 1, IPL_NET,
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octeon_ipd_intr_drop, NULL);
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__octeon_ipd_softc[sc->sc_port] = sc;
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#endif /* OCTEON_ETH_DEBUG */
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}
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#define _IPD_RD8(sc, off) \
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bus_space_read_8((sc)->sc_regt, (sc)->sc_regh, (off))
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#define _IPD_WR8(sc, off, v) \
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bus_space_write_8((sc)->sc_regt, (sc)->sc_regh, (off), (v))
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int
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octeon_ipd_enable(struct octeon_ipd_softc *sc)
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{
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uint64_t ctl_status;
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ctl_status = _IPD_RD8(sc, IPD_CTL_STATUS_OFFSET);
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SET(ctl_status, IPD_CTL_STATUS_IPD_EN);
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_IPD_WR8(sc, IPD_CTL_STATUS_OFFSET, ctl_status);
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return 0;
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}
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int
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octeon_ipd_config(struct octeon_ipd_softc *sc)
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{
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uint64_t first_mbuff_skip;
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uint64_t not_first_mbuff_skip;
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uint64_t packet_mbuff_size;
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uint64_t first_next_ptr_back;
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uint64_t second_next_ptr_back;
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uint64_t sqe_fpa_queue;
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uint64_t ctl_status;
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/* XXX XXX XXX */
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first_mbuff_skip = 0;
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SET(first_mbuff_skip, (sc->sc_first_mbuff_skip / 8) & IPD_1ST_MBUFF_SKIP_SZ);
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_IPD_WR8(sc, IPD_1ST_MBUFF_SKIP_OFFSET, first_mbuff_skip);
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/* XXX XXX XXX */
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/* XXX XXX XXX */
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not_first_mbuff_skip = 0;
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SET(not_first_mbuff_skip, (sc->sc_not_first_mbuff_skip / 8) &
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IPD_NOT_1ST_MBUFF_SKIP_SZ);
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_IPD_WR8(sc, IPD_NOT_1ST_MBUFF_SKIP_OFFSET, not_first_mbuff_skip);
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/* XXX XXX XXX */
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packet_mbuff_size = 0;
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SET(packet_mbuff_size, (FPA_RECV_PKT_POOL_SIZE / 8) &
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IPD_PACKET_MBUFF_SIZE_MB_SIZE);
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_IPD_WR8(sc, IPD_PACKET_MBUFF_SIZE_OFFSET, packet_mbuff_size);
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first_next_ptr_back = 0;
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SET(first_next_ptr_back, (sc->sc_first_mbuff_skip / 128) & IPD_1ST_NEXT_PTR_BACK_BACK);
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_IPD_WR8(sc, IPD_1ST_NEXT_PTR_BACK_OFFSET, first_next_ptr_back);
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second_next_ptr_back = 0;
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SET(second_next_ptr_back, (sc->sc_not_first_mbuff_skip / 128) &
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IPD_2ND_NEXT_PTR_BACK_BACK);
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_IPD_WR8(sc, IPD_2ND_NEXT_PTR_BACK_OFFSET, second_next_ptr_back);
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sqe_fpa_queue = 0;
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SET(sqe_fpa_queue, FPA_WQE_POOL & IPD_WQE_FPA_QUEUE_WQE_QUE);
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_IPD_WR8(sc, IPD_WQE_FPA_QUEUE_OFFSET, sqe_fpa_queue);
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ctl_status = _IPD_RD8(sc, IPD_CTL_STATUS_OFFSET);
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CLR(ctl_status, IPD_CTL_STATUS_OPC_MODE);
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SET(ctl_status, IPD_CTL_STATUS_OPC_MODE_ALL);
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SET(ctl_status, IPD_CTL_STATUS_PBP_EN);
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/*
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* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
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* from SDK
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* SET(ctl_status, IPD_CTL_STATUS_LEN_M8);
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* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
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*/
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_IPD_WR8(sc, IPD_CTL_STATUS_OFFSET, ctl_status);
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return 0;
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}
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/*
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* octeon work queue entry offload
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* L3 error & L4 error
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*/
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void
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octeon_ipd_offload(uint64_t word2, void *data, int *rcflags)
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{
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int cflags;
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if (ISSET(word2, PIP_WQE_WORD2_IP_NI))
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return;
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cflags = 0;
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if (!ISSET(word2, PIP_WQE_WORD2_IP_V6))
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SET(cflags, M_CSUM_IPv4);
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if (ISSET(word2, PIP_WQE_WORD2_IP_TU)) {
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SET(cflags,
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!ISSET(word2, PIP_WQE_WORD2_IP_V6) ?
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(M_CSUM_TCPv4 | M_CSUM_UDPv4) :
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(M_CSUM_TCPv6 | M_CSUM_UDPv6));
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}
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/* check L3 (IP) error */
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if (ISSET(word2, PIP_WQE_WORD2_IP_IE)) {
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struct ip *ip;
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switch (word2 & PIP_WQE_WORD2_IP_OPECODE) {
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case IPD_WQE_L3_V4_CSUM_ERR:
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/* CN31XX Pass 1.1 Errata */
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ip = (struct ip *)(IP_OFFSET(data, word2));
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if (ip->ip_hl == 5)
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SET(cflags, M_CSUM_IPv4_BAD);
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break;
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default:
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break;
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}
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}
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/* check L4 (UDP / TCP) error */
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if (ISSET(word2, PIP_WQE_WORD2_IP_LE)) {
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switch (word2 & PIP_WQE_WORD2_IP_OPECODE) {
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case IPD_WQE_L4_CSUM_ERR:
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SET(cflags, M_CSUM_TCP_UDP_BAD);
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break;
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default:
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break;
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}
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}
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*rcflags = cflags;
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}
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int
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octeon_ipd_red(struct octeon_ipd_softc *sc, uint64_t pass_thr, uint64_t drop_thr)
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{
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#if defined(OCTEON_ETH_IPD_RED)
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/*
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* no receive problem workaround.
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* if not set IPD RED pramaters,
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* may become unable to receive packet
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* on media mismatch environment
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* of self media 100-half duplex.
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*/
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uint64_t red_marks;
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uint64_t red_param;
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uint64_t red_port;
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red_marks = drop_thr << 32 /* XXX */ | pass_thr;
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_IPD_WR8(sc, IPD_QOS0_RED_MARKS_OFFSET, red_marks);
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_IPD_WR8(sc, IPD_QOS1_RED_MARKS_OFFSET, red_marks);
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_IPD_WR8(sc, IPD_QOS2_RED_MARKS_OFFSET, red_marks);
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_IPD_WR8(sc, IPD_QOS3_RED_MARKS_OFFSET, red_marks);
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_IPD_WR8(sc, IPD_QOS4_RED_MARKS_OFFSET, red_marks);
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_IPD_WR8(sc, IPD_QOS5_RED_MARKS_OFFSET, red_marks);
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_IPD_WR8(sc, IPD_QOS6_RED_MARKS_OFFSET, red_marks);
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_IPD_WR8(sc, IPD_QOS7_RED_MARKS_OFFSET, red_marks);
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red_param =
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((255ull << 24 /* XXX */) / (pass_thr - drop_thr)) |
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1ull << 32 /* XXX */ |
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255ull << 40 /* XXX */ |
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1ull << 48 /* XXX */;
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_IPD_WR8(sc, IPD_RED_QUE0_PARAM_OFFSET, red_param);
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_IPD_WR8(sc, IPD_RED_QUE1_PARAM_OFFSET, red_param);
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_IPD_WR8(sc, IPD_RED_QUE2_PARAM_OFFSET, red_param);
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_IPD_WR8(sc, IPD_RED_QUE3_PARAM_OFFSET, red_param);
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_IPD_WR8(sc, IPD_RED_QUE4_PARAM_OFFSET, red_param);
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_IPD_WR8(sc, IPD_RED_QUE5_PARAM_OFFSET, red_param);
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_IPD_WR8(sc, IPD_RED_QUE6_PARAM_OFFSET, red_param);
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_IPD_WR8(sc, IPD_RED_QUE7_PARAM_OFFSET, red_param);
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_IPD_WR8(sc, IPD_BP_PRT_RED_END_OFFSET, 0);
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red_port = 0xfffffffffull |
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10000ull << 36 /* XXX */ |
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10000ull << 50 /* XXX */;
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_IPD_WR8(sc, IPD_RED_PORT_ENABLE_OFFSET, red_port);
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#endif
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return 0;
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}
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void
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octeon_ipd_sub_port_fcs(struct octeon_ipd_softc *sc, int enable)
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{
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uint64_t sub_port_fcs;
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sub_port_fcs = _IPD_RD8(sc, IPD_SUB_PORT_FCS_OFFSET);
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if (enable == 0)
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CLR(sub_port_fcs, 1 << sc->sc_port);
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else
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SET(sub_port_fcs, 1 << sc->sc_port);
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_IPD_WR8(sc, IPD_SUB_PORT_FCS_OFFSET, sub_port_fcs);
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}
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#ifdef OCTEON_ETH_DEBUG
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int octeon_ipd_intr_rml_verbose;
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struct evcnt octeon_ipd_intr_evcnt;
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static const struct octeon_evcnt_entry octeon_ipd_intr_evcnt_entries[] = {
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#define _ENTRY(name, type, parent, descr) \
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OCTEON_EVCNT_ENTRY(struct octeon_ipd_softc, name, type, parent, descr)
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_ENTRY(ipdbpsub, MISC, NULL, "ipd backpressure subtract"),
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_ENTRY(ipdprcpar3, MISC, NULL, "ipd parity error 127:96"),
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_ENTRY(ipdprcpar2, MISC, NULL, "ipd parity error 95:64"),
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_ENTRY(ipdprcpar1, MISC, NULL, "ipd parity error 63:32"),
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_ENTRY(ipdprcpar0, MISC, NULL, "ipd parity error 31:0"),
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#undef _ENTRY
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};
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void
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octeon_ipd_intr_evcnt_attach(struct octeon_ipd_softc *sc)
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{
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OCTEON_EVCNT_ATTACH_EVCNTS(sc, octeon_ipd_intr_evcnt_entries, "ipd0");
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}
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void
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octeon_ipd_intr_rml(void *arg)
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{
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int i;
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octeon_ipd_intr_evcnt.ev_count++;
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for (i = 0; i < 3/* XXX */; i++) {
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struct octeon_ipd_softc *sc;
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uint64_t reg;
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sc = __octeon_ipd_softc[i];
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KASSERT(sc != NULL);
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reg = octeon_ipd_int_summary(sc);
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if (octeon_ipd_intr_rml_verbose)
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printf("%s: IPD_INT_SUM=0x%016" PRIx64 "\n", __func__, reg);
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if (reg & IPD_INT_SUM_BP_SUB)
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OCTEON_EVCNT_INC(sc, ipdbpsub);
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if (reg & IPD_INT_SUM_PRC_PAR3)
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OCTEON_EVCNT_INC(sc, ipdprcpar3);
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if (reg & IPD_INT_SUM_PRC_PAR2)
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OCTEON_EVCNT_INC(sc, ipdprcpar2);
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if (reg & IPD_INT_SUM_PRC_PAR1)
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OCTEON_EVCNT_INC(sc, ipdprcpar1);
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if (reg & IPD_INT_SUM_PRC_PAR0)
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OCTEON_EVCNT_INC(sc, ipdprcpar0);
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}
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}
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void
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octeon_ipd_int_enable(struct octeon_ipd_softc *sc, int enable)
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{
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uint64_t ipd_int_xxx = 0;
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SET(ipd_int_xxx,
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IPD_INT_SUM_BP_SUB |
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IPD_INT_SUM_PRC_PAR3 |
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IPD_INT_SUM_PRC_PAR2 |
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IPD_INT_SUM_PRC_PAR1 |
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IPD_INT_SUM_PRC_PAR0);
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_IPD_WR8(sc, IPD_INT_SUM_OFFSET, ipd_int_xxx);
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_IPD_WR8(sc, IPD_INT_ENB_OFFSET, enable ? ipd_int_xxx : 0);
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}
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uint64_t
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octeon_ipd_int_summary(struct octeon_ipd_softc *sc)
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{
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uint64_t summary;
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summary = _IPD_RD8(sc, IPD_INT_SUM_OFFSET);
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_IPD_WR8(sc, IPD_INT_SUM_OFFSET, summary);
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return summary;
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}
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int
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octeon_ipd_intr_drop(void *arg)
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{
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octeon_write_csr(CIU_INT0_SUM0, CIU_INTX_SUM0_IPD_DRP);
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octeon_ipd_intr_drop_evcnt.ev_count++;
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return (1);
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}
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#define _ENTRY(x) { #x, x##_BITS, x##_OFFSET }
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struct octeon_ipd_dump_reg {
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const char *name;
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const char *format;
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size_t offset;
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};
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static const struct octeon_ipd_dump_reg octeon_ipd_dump_regs[] = {
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_ENTRY(IPD_1ST_MBUFF_SKIP),
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_ENTRY(IPD_NOT_1ST_MBUFF_SKIP),
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_ENTRY(IPD_PACKET_MBUFF_SIZE),
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_ENTRY(IPD_CTL_STATUS),
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_ENTRY(IPD_WQE_FPA_QUEUE),
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_ENTRY(IPD_PORT0_BP_PAGE_CNT),
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_ENTRY(IPD_PORT1_BP_PAGE_CNT),
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_ENTRY(IPD_PORT2_BP_PAGE_CNT),
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_ENTRY(IPD_PORT32_BP_PAGE_CNT),
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_ENTRY(IPD_SUB_PORT_BP_PAGE_CNT),
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_ENTRY(IPD_1ST_NEXT_PTR_BACK),
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_ENTRY(IPD_2ND_NEXT_PTR_BACK),
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_ENTRY(IPD_INT_ENB),
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_ENTRY(IPD_INT_SUM),
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_ENTRY(IPD_SUB_PORT_FCS),
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_ENTRY(IPD_QOS0_RED_MARKS),
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_ENTRY(IPD_QOS1_RED_MARKS),
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_ENTRY(IPD_QOS2_RED_MARKS),
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_ENTRY(IPD_QOS3_RED_MARKS),
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_ENTRY(IPD_QOS4_RED_MARKS),
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_ENTRY(IPD_QOS5_RED_MARKS),
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_ENTRY(IPD_QOS6_RED_MARKS),
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_ENTRY(IPD_QOS7_RED_MARKS),
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_ENTRY(IPD_PORT_BP_COUNTERS_PAIR0),
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_ENTRY(IPD_PORT_BP_COUNTERS_PAIR1),
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_ENTRY(IPD_PORT_BP_COUNTERS_PAIR2),
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_ENTRY(IPD_PORT_BP_COUNTERS_PAIR32),
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_ENTRY(IPD_RED_PORT_ENABLE),
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_ENTRY(IPD_RED_QUE0_PARAM),
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_ENTRY(IPD_RED_QUE1_PARAM),
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_ENTRY(IPD_RED_QUE2_PARAM),
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_ENTRY(IPD_RED_QUE3_PARAM),
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_ENTRY(IPD_RED_QUE4_PARAM),
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_ENTRY(IPD_RED_QUE5_PARAM),
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_ENTRY(IPD_RED_QUE6_PARAM),
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|
_ENTRY(IPD_RED_QUE7_PARAM),
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|
_ENTRY(IPD_PTR_COUNT),
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|
_ENTRY(IPD_BP_PRT_RED_END),
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|
_ENTRY(IPD_QUE0_FREE_PAGE_CNT),
|
|
_ENTRY(IPD_CLK_COUNT),
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|
_ENTRY(IPD_PWP_PTR_FIFO_CTL),
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|
_ENTRY(IPD_PRC_HOLD_PTR_FIFO_CTL),
|
|
_ENTRY(IPD_PRC_PORT_PTR_FIFO_CTL),
|
|
_ENTRY(IPD_PKT_PTR_VALID),
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|
_ENTRY(IPD_WQE_PTR_VALID),
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|
_ENTRY(IPD_BIST_STATUS),
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|
};
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|
|
|
void
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|
octeon_ipd_dump(void)
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|
{
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|
struct octeon_ipd_softc *sc;
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|
const struct octeon_ipd_dump_reg *reg;
|
|
uint64_t tmp;
|
|
char buf[512];
|
|
int i;
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|
|
|
sc = __octeon_ipd_softc[0];
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|
for (i = 0; i < (int)__arraycount(octeon_ipd_dump_regs); i++) {
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|
reg = &octeon_ipd_dump_regs[i];
|
|
tmp = _IPD_RD8(sc, reg->offset);
|
|
if (reg->format == NULL) {
|
|
snprintf(buf, sizeof(buf), "%16" PRIx64, tmp);
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|
} else {
|
|
snprintb(buf, sizeof(buf), reg->format, tmp);
|
|
}
|
|
printf("%-32s: %s\n", reg->name, buf);
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|
}
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|
}
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|
#endif /* OCTEON_ETH_DEBUG */
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