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-rw-r--r--sys/dev/sfxge/sfxge_mcdi.c179
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);
}
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