git: 1e1253510ab4 - main - e6000sw: Use taskqueue subsytem for MDIO polling
Wojciech Macek
wma at FreeBSD.org
Mon Sep 13 09:37:23 UTC 2021
The branch main has been updated by wma:
URL: https://cgit.FreeBSD.org/src/commit/?id=1e1253510ab434484472ee2a4ce94426d18f3764
commit 1e1253510ab434484472ee2a4ce94426d18f3764
Author: Hubert Mazur <hum at semihalf.com>
AuthorDate: 2021-09-13 09:35:51 +0000
Commit: Wojciech Macek <wma at FreeBSD.org>
CommitDate: 2021-09-13 09:37:11 +0000
e6000sw: Use taskqueue subsytem for MDIO polling
Previosuly the link status was pooled in an infinite loop in a separate
kproc. Use taskqueue subsytem instead. This is a prequisite for making
this driver work as a loadable module.
Obtained from: Semihalf
Differential revision: https://reviews.freebsd.org/D31579
---
sys/dev/etherswitch/e6000sw/e6000sw.c | 65 ++++++++++++++++++++---------------
1 file changed, 38 insertions(+), 27 deletions(-)
diff --git a/sys/dev/etherswitch/e6000sw/e6000sw.c b/sys/dev/etherswitch/e6000sw/e6000sw.c
index 4803e200e8fb..e6c76c578d14 100644
--- a/sys/dev/etherswitch/e6000sw/e6000sw.c
+++ b/sys/dev/etherswitch/e6000sw/e6000sw.c
@@ -35,6 +35,7 @@ __FBSDID("$FreeBSD$");
#include <sys/kernel.h>
#include <sys/kthread.h>
#include <sys/module.h>
+#include <sys/taskqueue.h>
#include <sys/socket.h>
#include <sys/sockio.h>
@@ -79,7 +80,8 @@ typedef struct e6000sw_softc {
struct ifnet *ifp[E6000SW_MAX_PORTS];
char *ifname[E6000SW_MAX_PORTS];
device_t miibus[E6000SW_MAX_PORTS];
- struct proc *kproc;
+ struct taskqueue *sc_tq;
+ struct timeout_task sc_tt;
int vlans[E6000SW_NUM_VLANS];
uint32_t swid;
@@ -127,7 +129,7 @@ static int e6000sw_setvgroup_wrapper(device_t, etherswitch_vlangroup_t *);
static int e6000sw_setvgroup(device_t, etherswitch_vlangroup_t *);
static int e6000sw_getvgroup(device_t, etherswitch_vlangroup_t *);
static void e6000sw_setup(device_t, e6000sw_softc_t *);
-static void e6000sw_tick(void *);
+static void e6000sw_tick(void *, int);
static void e6000sw_set_atustat(device_t, e6000sw_softc_t *, int, int);
static int e6000sw_atu_flush(device_t, e6000sw_softc_t *, int);
static int e6000sw_vtu_flush(e6000sw_softc_t *);
@@ -450,8 +452,13 @@ e6000sw_attach(device_t dev)
E6000SW_LOCK(sc);
e6000sw_setup(dev, sc);
-
ports = ofw_bus_find_child(sc->node, "ports");
+ sc->sc_tq = taskqueue_create("e6000sw_taskq", M_NOWAIT,
+ taskqueue_thread_enqueue, &sc->sc_tq);
+
+ TIMEOUT_TASK_INIT(sc->sc_tq, &sc->sc_tt, 0, e6000sw_tick, sc);
+ taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq",
+ device_get_nameunit(dev));
if (ports == 0) {
device_printf(dev, "failed to parse DTS: no ports found for "
@@ -544,7 +551,7 @@ e6000sw_attach(device_t dev)
bus_generic_probe(dev);
bus_generic_attach(dev);
- kproc_create(e6000sw_tick, sc, &sc->kproc, 0, 0, "e6000sw tick kproc");
+ taskqueue_enqueue_timeout(sc->sc_tq, &sc->sc_tt, hz);
return (0);
@@ -711,6 +718,13 @@ e6000sw_detach(device_t dev)
e6000sw_softc_t *sc;
sc = device_get_softc(dev);
+
+ if (device_is_attached(dev))
+ taskqueue_drain_timeout(sc->sc_tq, &sc->sc_tt);
+
+ if (sc->sc_tq != NULL)
+ taskqueue_free(sc->sc_tq);
+
bus_generic_detach(dev);
sx_destroy(&sc->sx);
for (phy = 0; phy < sc->num_ports; phy++) {
@@ -1460,7 +1474,7 @@ e6000sw_update_ifmedia(uint16_t portstatus, u_int *media_status, u_int *media_ac
}
static void
-e6000sw_tick(void *arg)
+e6000sw_tick(void *arg, int p __unused)
{
e6000sw_softc_t *sc;
struct mii_data *mii;
@@ -1472,34 +1486,31 @@ e6000sw_tick(void *arg)
E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
- for (;;) {
- E6000SW_LOCK(sc);
- for (port = 0; port < sc->num_ports; port++) {
- /* Tick only on PHY ports */
- if (!e6000sw_is_portenabled(sc, port) ||
- !e6000sw_is_phyport(sc, port))
- continue;
+ E6000SW_LOCK(sc);
+ for (port = 0; port < sc->num_ports; port++) {
+ /* Tick only on PHY ports */
+ if (!e6000sw_is_portenabled(sc, port) ||
+ !e6000sw_is_phyport(sc, port))
+ continue;
- mii = e6000sw_miiforphy(sc, port);
- if (mii == NULL)
- continue;
+ mii = e6000sw_miiforphy(sc, port);
+ if (mii == NULL)
+ continue;
- portstatus = e6000sw_readreg(sc, REG_PORT(sc, port),
- PORT_STATUS);
+ portstatus = e6000sw_readreg(sc, REG_PORT(sc, port),
+ PORT_STATUS);
- e6000sw_update_ifmedia(portstatus,
- &mii->mii_media_status, &mii->mii_media_active);
+ e6000sw_update_ifmedia(portstatus,
+ &mii->mii_media_status, &mii->mii_media_active);
- LIST_FOREACH(miisc, &mii->mii_phys, mii_list) {
- if (IFM_INST(mii->mii_media.ifm_cur->ifm_media)
- != miisc->mii_inst)
- continue;
- mii_phy_update(miisc, MII_POLLSTAT);
- }
+ LIST_FOREACH(miisc, &mii->mii_phys, mii_list) {
+ if (IFM_INST(mii->mii_media.ifm_cur->ifm_media)
+ != miisc->mii_inst)
+ continue;
+ mii_phy_update(miisc, MII_POLLSTAT);
}
- E6000SW_UNLOCK(sc);
- pause("e6000sw tick", 1000);
}
+ E6000SW_UNLOCK(sc);
}
static void
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