diff options
Diffstat (limited to 'sys/dev/sfxge/sfxge_mcdi.c')
-rw-r--r-- | sys/dev/sfxge/sfxge_mcdi.c | 179 |
1 files changed, 120 insertions, 59 deletions
diff --git a/sys/dev/sfxge/sfxge_mcdi.c b/sys/dev/sfxge/sfxge_mcdi.c index a1bc857..fb9f650 100644 --- a/sys/dev/sfxge/sfxge_mcdi.c +++ b/sys/dev/sfxge/sfxge_mcdi.c @@ -1,30 +1,34 @@ /*- - * Copyright (c) 2010-2011 Solarflare Communications, Inc. + * Copyright (c) 2010-2015 Solarflare Communications Inc. * All rights reserved. * * This software was developed in part by Philip Paeps under contract for * Solarflare Communications, Inc. * * 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. + * modification, are permitted provided that the following conditions are met: * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. + * 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. + * + * The views and conclusions contained in the software and documentation are + * those of the authors and should not be interpreted as representing official + * policies, either expressed or implied, of the FreeBSD Project. */ #include <sys/cdefs.h> @@ -37,6 +41,7 @@ __FBSDID("$FreeBSD$"); #include <sys/proc.h> #include <sys/syslog.h> #include <sys/taskqueue.h> +#include <sys/malloc.h> #include "common/efx.h" #include "common/efx_mcdi.h" @@ -48,36 +53,6 @@ __FBSDID("$FreeBSD$"); #define SFXGE_MCDI_POLL_INTERVAL_MAX 100000 /* 100ms in 1us units */ #define SFXGE_MCDI_WATCHDOG_INTERVAL 10000000 /* 10s in 1us units */ -/* Acquire exclusive access to MCDI for the duration of a request. */ -static void -sfxge_mcdi_acquire(struct sfxge_mcdi *mcdi) -{ - SFXGE_MCDI_LOCK(mcdi); - KASSERT(mcdi->state != SFXGE_MCDI_UNINITIALIZED, - ("MCDI not initialized")); - - while (mcdi->state != SFXGE_MCDI_INITIALIZED) - (void)cv_wait_sig(&mcdi->cv, &mcdi->lock); - mcdi->state = SFXGE_MCDI_BUSY; - - SFXGE_MCDI_UNLOCK(mcdi); -} - -/* Release ownership of MCDI on request completion. */ -static void -sfxge_mcdi_release(struct sfxge_mcdi *mcdi) -{ - SFXGE_MCDI_LOCK(mcdi); - KASSERT((mcdi->state == SFXGE_MCDI_BUSY || - mcdi->state == SFXGE_MCDI_COMPLETED), - ("MCDI not busy or task not completed")); - - mcdi->state = SFXGE_MCDI_INITIALIZED; - cv_broadcast(&mcdi->cv); - - SFXGE_MCDI_UNLOCK(mcdi); -} - static void sfxge_mcdi_timeout(struct sfxge_softc *sc) { @@ -140,13 +115,16 @@ sfxge_mcdi_execute(void *arg, efx_mcdi_req_t *emrp) sc = (struct sfxge_softc *)arg; mcdi = &sc->mcdi; - sfxge_mcdi_acquire(mcdi); + SFXGE_MCDI_LOCK(mcdi); + + KASSERT(mcdi->state == SFXGE_MCDI_INITIALIZED, + ("MCDI not initialized")); /* Issue request and poll for completion. */ efx_mcdi_request_start(sc->enp, emrp, B_FALSE); sfxge_mcdi_poll(sc); - sfxge_mcdi_release(mcdi); + SFXGE_MCDI_UNLOCK(mcdi); } static void @@ -158,11 +136,10 @@ sfxge_mcdi_ev_cpl(void *arg) sc = (struct sfxge_softc *)arg; mcdi = &sc->mcdi; - SFXGE_MCDI_LOCK(mcdi); - KASSERT(mcdi->state == SFXGE_MCDI_BUSY, ("MCDI not busy")); - mcdi->state = SFXGE_MCDI_COMPLETED; - cv_broadcast(&mcdi->cv); - SFXGE_MCDI_UNLOCK(mcdi); + KASSERT(mcdi->state == SFXGE_MCDI_INITIALIZED, + ("MCDI not initialized")); + + /* We do not use MCDI completion, MCDI is simply polled */ } static void @@ -187,16 +164,95 @@ sfxge_mcdi_exception(void *arg, efx_mcdi_exception_t eme) } int +sfxge_mcdi_ioctl(struct sfxge_softc *sc, sfxge_ioc_t *ip) +{ + const efx_nic_cfg_t *encp = efx_nic_cfg_get(sc->enp); + struct sfxge_mcdi *mp = &(sc->mcdi); + efx_mcdi_req_t emr; + uint8_t *mcdibuf; + int rc; + + if (mp->state == SFXGE_MCDI_UNINITIALIZED) { + rc = ENODEV; + goto fail1; + } + + if (!(encp->enc_features & EFX_FEATURE_MCDI)) { + rc = ENOTSUP; + goto fail2; + } + + if (ip->u.mcdi.len > SFXGE_MCDI_MAX_PAYLOAD) { + rc = EINVAL; + goto fail3; + } + + mcdibuf = malloc(SFXGE_MCDI_MAX_PAYLOAD, M_TEMP, M_WAITOK | M_ZERO); + if (mcdibuf == NULL) { + rc = ENOMEM; + goto fail4; + } + if ((rc = copyin(ip->u.mcdi.payload, mcdibuf, ip->u.mcdi.len)) != 0) { + goto fail5; + } + + emr.emr_cmd = ip->u.mcdi.cmd; + emr.emr_in_buf = mcdibuf; + emr.emr_in_length = ip->u.mcdi.len; + + emr.emr_out_buf = mcdibuf; + emr.emr_out_length = SFXGE_MCDI_MAX_PAYLOAD; + + sfxge_mcdi_execute(sc, &emr); + + ip->u.mcdi.rc = emr.emr_rc; + ip->u.mcdi.cmd = emr.emr_cmd; + ip->u.mcdi.len = emr.emr_out_length_used; + if ((rc = copyout(mcdibuf, ip->u.mcdi.payload, ip->u.mcdi.len)) != 0) { + goto fail6; + } + + /* + * Helpfully trigger a device reset in response to an MCDI_CMD_REBOOT + * Both ports will see ->emt_exception callbacks on the next MCDI poll + */ + if (ip->u.mcdi.cmd == MC_CMD_REBOOT) { + + EFSYS_PROBE(mcdi_ioctl_mc_reboot); + /* sfxge_t->s_state_lock held */ + (void) sfxge_schedule_reset(sc); + } + + free(mcdibuf, M_TEMP); + + return (0); + +fail6: +fail5: + free(mcdibuf, M_TEMP); +fail4: +fail3: +fail2: +fail1: + return (rc); +} + + +int sfxge_mcdi_init(struct sfxge_softc *sc) { efx_nic_t *enp; struct sfxge_mcdi *mcdi; efx_mcdi_transport_t *emtp; + efsys_mem_t *esmp; + int max_msg_size; int rc; enp = sc->enp; mcdi = &sc->mcdi; emtp = &mcdi->transport; + esmp = &mcdi->mem; + max_msg_size = sizeof (uint32_t) + MCDI_CTL_SDU_LEN_MAX_V2; KASSERT(mcdi->state == SFXGE_MCDI_UNINITIALIZED, ("MCDI already initialized")); @@ -205,13 +261,15 @@ sfxge_mcdi_init(struct sfxge_softc *sc) mcdi->state = SFXGE_MCDI_INITIALIZED; + if ((rc = sfxge_dma_alloc(sc, max_msg_size, esmp)) != 0) + goto fail; + emtp->emt_context = sc; + emtp->emt_dma_mem = esmp; emtp->emt_execute = sfxge_mcdi_execute; emtp->emt_ev_cpl = sfxge_mcdi_ev_cpl; emtp->emt_exception = sfxge_mcdi_exception; - cv_init(&mcdi->cv, "sfxge_mcdi"); - if ((rc = efx_mcdi_init(enp, emtp)) != 0) goto fail; @@ -229,10 +287,12 @@ sfxge_mcdi_fini(struct sfxge_softc *sc) struct sfxge_mcdi *mcdi; efx_nic_t *enp; efx_mcdi_transport_t *emtp; + efsys_mem_t *esmp; enp = sc->enp; mcdi = &sc->mcdi; emtp = &mcdi->transport; + esmp = &mcdi->mem; SFXGE_MCDI_LOCK(mcdi); KASSERT(mcdi->state == SFXGE_MCDI_INITIALIZED, @@ -241,8 +301,9 @@ sfxge_mcdi_fini(struct sfxge_softc *sc) efx_mcdi_fini(enp); bzero(emtp, sizeof(*emtp)); - cv_destroy(&mcdi->cv); SFXGE_MCDI_UNLOCK(mcdi); + sfxge_dma_free(esmp); + SFXGE_MCDI_LOCK_DESTROY(mcdi); } |