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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-01-17 13:28:45 +0100 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-01-23 14:55:31 +0100 |
commit | d62a3df1c770a64aff894bb3e698130ddf722ad0 (patch) | |
tree | a68930cf87c1089dc767c8ca968eaf857b353f61 /rtemsbsd/sys | |
parent | sdk_dpaa: Import from QorIQ SDK Linux (diff) | |
download | rtems-libbsd-d62a3df1c770a64aff894bb3e698130ddf722ad0.tar.bz2 |
sdk_dpaa: Port to RTEMS
Update #3277.
Diffstat (limited to 'rtemsbsd/sys')
-rw-r--r-- | rtemsbsd/sys/powerpc/drivers/net/ethernet/freescale/sdk_dpaa/if_ml.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/rtemsbsd/sys/powerpc/drivers/net/ethernet/freescale/sdk_dpaa/if_ml.c b/rtemsbsd/sys/powerpc/drivers/net/ethernet/freescale/sdk_dpaa/if_ml.c new file mode 100644 index 00000000..b5f32995 --- /dev/null +++ b/rtemsbsd/sys/powerpc/drivers/net/ethernet/freescale/sdk_dpaa/if_ml.c @@ -0,0 +1,208 @@ +#include <machine/rtems-bsd-kernel-space.h> + +#include <rtems/bsd/local/opt_dpaa.h> + +/* + * Copyright (c) 2018 embedded brains GmbH + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * + * 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 <machine/rtems-bsd-kernel-space.h> + +#include <linux/kernel.h> + +#include "../../../../../../../../linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.h" + +#include <soc/fsl/bman.h> + +#include <sys/bus.h> +#include <sys/callout.h> +#include <sys/kernel.h> +#include <sys/malloc.h> +#include <sys/mbuf.h> +#include <sys/module.h> +#include <sys/queue.h> +#include <sys/socket.h> +#include <sys/sockio.h> + +#include <net/if.h> +#include <net/ethernet.h> +#include <net/if_arp.h> +#include <net/if_dl.h> +#include <net/if_media.h> +#include <net/if_types.h> +#include <net/if_var.h> + +#define IF_ML_LOCK(sc) mtx_lock(&(sc)->mtx) +#define IF_ML_UNLOCK(sc) mtx_unlock(&(sc)->mtx) + +static void +if_ml_start(struct ifnet *ifp) +{ + struct if_ml_softc *sc; + struct dpaa_priv *priv; + int queue; + struct dpaa_bp *bp; + struct qman_fq *egress_fq; + + sc = ifp->if_softc; + priv = netdev_priv(&sc->net_dev); + queue = 0; + bp = priv->dpaa_bps[queue]; + egress_fq = priv->egress_fqs[queue]; + + for (;;) { + struct mbuf *m; + struct bm_buffer bmb; + struct qm_fd fd; + uintptr_t buf_addr; + char *dst; + int len; + int err; + int i; + + IF_DEQUEUE(&ifp->if_snd, m); + if (m == NULL) + break; + + err = bman_acquire(bp->pool, &bmb, 1); + if (unlikely(err <= 0)) { + if_inc_counter(ifp, IFCOUNTER_OQDROPS, 1); + m_freem(m); + continue; + } + + qm_fd_clear_fd(&fd); + len = m->m_pkthdr.len; + qm_fd_set_contig(&fd, priv->tx_headroom, len); + fd.bpid = bp->bpid; + buf_addr = bm_buf_addr(&bmb); + qm_fd_addr_set64(&fd, buf_addr); + dst = (char *)(buf_addr + priv->tx_headroom); + + do { + len = m->m_len; + dst = memcpy(dst, mtod(m, const void *), len); + dst += len; + m = m_free(m); + } while (m != NULL); + + for (i = 0; i < DPAA_ENQUEUE_RETRIES; ++i) { + err = qman_enqueue(egress_fq, &fd); + if (err != -EBUSY) { + break; + } + } + + if (unlikely(err < 0)) { + if_inc_counter(ifp, IFCOUNTER_OQDROPS, 1); + continue; + } + } +} + +static void +if_ml_init_locked(struct if_ml_softc* sc_p) +{ + struct ifnet *ifp; + + ifp = sc_p->ifp; + if (ifp->if_drv_flags & IFF_DRV_RUNNING) + return; + + ifp->if_drv_flags |= IFF_DRV_RUNNING; +} + +static void +if_ml_stop_locked(struct if_ml_softc* sc_p) +{ +} + +static int +if_ml_ioctl(struct ifnet* ifp, ioctl_command_t cmd, caddr_t data) +{ + struct if_ml_softc *sc; + int error; + + sc = ifp->if_softc; + + switch (cmd) { + case SIOCSIFFLAGS: + IF_ML_LOCK(sc); + if (ifp->if_flags & IFF_UP) { + if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) + if_ml_init_locked(sc); + } else { + if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) + if_ml_stop_locked(sc); + } + IF_ML_UNLOCK(sc); + error = 0; + break; + + default: + error = ether_ioctl(ifp, cmd, data); + break; + } + + return error; +} + +static void +if_ml_init(void* arg) +{ + struct if_ml_softc *sc; + + sc = arg; + IF_ML_LOCK(sc); + if_ml_init_locked(sc); + IF_ML_UNLOCK(sc); +} + +void +if_ml_attach(struct if_ml_softc *sc, int unit, const uint8_t *mac_address) +{ + struct ifnet *ifp; + + BSD_ASSERT(mac_address != NULL); + + sc->ifp = ifp = if_alloc(IFT_ETHER); + BSD_ASSERT(ifp != NULL); + + sc->net_dev.ifp = ifp; + + mtx_init(&sc->mtx, "if_ml", MTX_NETWORK_LOCK, MTX_DEF); + + ifp->if_softc = sc; + if_initname(ifp, "ml", unit); + ifp->if_flags = IFF_SIMPLEX | IFF_MULTICAST | IFF_BROADCAST; + ifp->if_start = if_ml_start; + ifp->if_ioctl = if_ml_ioctl; + ifp->if_init = if_ml_init; + IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); + ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; + IFQ_SET_READY(&ifp->if_snd); + + ether_ifattach(ifp, mac_address); +} |