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Diffstat (limited to 'sys/scsi/ses.c')
-rw-r--r--sys/scsi/ses.c104
1 files changed, 69 insertions, 35 deletions
diff --git a/sys/scsi/ses.c b/sys/scsi/ses.c
index f75de374c7b..340883e7cd2 100644
--- a/sys/scsi/ses.c
+++ b/sys/scsi/ses.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ses.c,v 1.13 2005/08/04 02:14:30 marco Exp $ */
+/* $OpenBSD: ses.c,v 1.14 2005/08/04 14:28:51 dlg Exp $ */
/*
* Copyright (c) 2005 David Gwynne <dlg@openbsd.org>
@@ -25,6 +25,7 @@
#include <sys/device.h>
#include <sys/conf.h>
#include <sys/queue.h>
+#include <sys/kthread.h>
#include <sys/sensors.h>
#include <scsi/scsi_all.h>
@@ -54,21 +55,17 @@ struct ses_sensor {
TAILQ_ENTRY(ses_sensor) se_entry;
};
+struct ses_thread;
+
struct ses_softc {
struct device sc_dev;
struct scsi_link *sc_link;
-
- enum {
- SES_ST_NONE,
- SES_ST_OK,
- SES_ST_ERR
- } sc_state;
u_char *sc_buf;
ssize_t sc_buflen;
TAILQ_HEAD(, ses_sensor) sc_sensors;
- struct timeout sc_timeout;
+ struct ses_thread *sc_thread;
};
struct cfattach ses_ca = {
@@ -83,10 +80,16 @@ struct cfdriver ses_cd = {
#define SES_BUFLEN 2048 /* XXX is this enough? */
+struct ses_thread {
+ struct ses_softc *sc;
+ volatile int running;
+};
+
+void ses_create_thread(void *);
void ses_refresh(void *);
int ses_read_config(struct ses_softc *);
-int ses_read_status(struct ses_softc *, int refresh);
+int ses_read_status(struct ses_softc *);
int ses_make_sensors(struct ses_softc *, struct ses_type_desc *, int);
int ses_refresh_sensors(struct ses_softc *);
@@ -127,9 +130,10 @@ ses_attach(struct device *parent, struct device *self, void *aux)
{
struct ses_softc *sc = (struct ses_softc *)self;
struct scsibus_attach_args *sa = aux;
+ struct ses_sensor *sensor;
sc->sc_link = sa->sa_sc_link;
- sc->sc_state = SES_ST_NONE;
+ sc->sc_thread = NULL;
printf("\n");
printf("%s: SCSI Enclosure Services\n", DEVNAME(sc));
@@ -140,10 +144,26 @@ ses_attach(struct device *parent, struct device *self, void *aux)
return;
}
- sc->sc_state = SES_ST_OK;
+ sc->sc_thread = malloc(sizeof(struct ses_thread), M_DEVBUF, M_NOWAIT);
+ if (sc->sc_thread == NULL) {
+ free(sc->sc_buf, M_DEVBUF);
+ while (!TAILQ_EMPTY(&sc->sc_sensors)) {
+ sensor = TAILQ_FIRST(&sc->sc_sensors);
+ TAILQ_REMOVE(&sc->sc_sensors, sensor, se_entry);
+ free(sensor, M_DEVBUF);
+ }
+ printf("%s: unable to allocate thread information\n",
+ DEVNAME(sc));
+ return;
+ }
+
+ sc->sc_thread->sc = sc;
+ sc->sc_thread->running = 1;
- timeout_set(&sc->sc_timeout, ses_refresh, sc);
- timeout_add(&sc->sc_timeout, 10 * hz);
+ TAILQ_FOREACH(sensor, &sc->sc_sensors, se_entry)
+ SENSOR_ADD(&sensor->se_sensor);
+
+ kthread_create_deferred(ses_create_thread, sc);
}
int
@@ -152,11 +172,13 @@ ses_detach(struct device *self, int flags)
struct ses_softc *sc = (struct ses_softc *)self;
struct ses_sensor *sensor;
- if (sc->sc_state != SES_ST_NONE) {
- timeout_del(&sc->sc_timeout);
+ if (sc->sc_thread != NULL) {
+ sc->sc_thread->running = 0;
+ wakeup(sc->sc_thread);
+ sc->sc_thread = NULL;
/*
- * We cant free the sensors once theyre in the systems sensor
+ * We can't free the sensors once theyre in the systems sensor
* list, so just mark them as invalid.
*/
TAILQ_FOREACH(sensor, &sc->sc_sensors, se_entry)
@@ -169,22 +191,39 @@ ses_detach(struct device *self, int flags)
}
void
-ses_refresh(void *arg)
+ses_create_thread(void *arg)
{
struct ses_softc *sc = arg;
- if (ses_refresh_sensors(sc) != 0) {
- if (sc->sc_state != SES_ST_ERR)
- printf("%s: error reading enclosure status\n",
- DEVNAME(sc));
- sc->sc_state = SES_ST_ERR;
- } else {
- if (sc->sc_state != SES_ST_OK)
- printf("%s: reading enclosure status\n", DEVNAME(sc));
- sc->sc_state = SES_ST_OK;
+ if (kthread_create(ses_refresh, sc->sc_thread, NULL, DEVNAME(sc)) != 0)
+ panic("ses thread");
+}
+
+void
+ses_refresh(void *arg)
+{
+ struct ses_thread *thread = arg;
+ struct ses_softc *sc = thread->sc;
+ int ok = 1;
+
+ while (thread->running) {
+ if (ses_refresh_sensors(sc) != 0) {
+ if (ok)
+ printf("%s: error reading enclosure status\n",
+ DEVNAME(sc));
+ ok = 0;
+ } else {
+ if (!ok)
+ printf("%s: reading enclosure status\n",
+ DEVNAME(sc));
+ ok = 1;
+ }
+ tsleep(thread, PWAIT, "timeout", 10 * hz);
}
- timeout_add(&sc->sc_timeout, 10 * hz);
+ free(thread, M_DEVBUF);
+
+ kthread_exit(0);
}
int
@@ -289,7 +328,7 @@ ses_read_config(struct ses_softc *sc)
}
int
-ses_read_status(struct ses_softc *sc, int refresh)
+ses_read_status(struct ses_softc *sc)
{
struct ses_scsi_diag cmd;
int flags;
@@ -303,8 +342,6 @@ ses_read_status(struct ses_softc *sc, int refresh)
#ifndef SCSIDEBUG
flags |= SCSI_SILENT;
#endif
- if (refresh)
- flags |= SCSI_NOSLEEP;
if (scsi_scsi_cmd(sc->sc_link, (struct scsi_generic *)&cmd,
sizeof(cmd), sc->sc_buf, sc->sc_buflen, 2, 3000, NULL, flags) != 0)
@@ -325,7 +362,7 @@ ses_make_sensors(struct ses_softc *sc, struct ses_type_desc *types, int ntypes)
int typecnt[SES_NUM_TYPES];
int i, j;
- if (ses_read_status(sc, 0) != 0)
+ if (ses_read_status(sc) != 0)
return (1);
memset(typecnt, 0, sizeof(typecnt));
@@ -391,10 +428,7 @@ ses_make_sensors(struct ses_softc *sc, struct ses_type_desc *types, int ntypes)
status++;
}
- TAILQ_FOREACH(sensor, &sc->sc_sensors, se_entry)
- SENSOR_ADD(&sensor->se_sensor);
return (0);
-
error:
while (!TAILQ_EMPTY(&sc->sc_sensors)) {
sensor = TAILQ_FIRST(&sc->sc_sensors);
@@ -410,7 +444,7 @@ ses_refresh_sensors(struct ses_softc *sc)
struct ses_sensor *sensor;
int ret = 0;
- if (ses_read_status(sc, 1) != 0)
+ if (ses_read_status(sc) != 0)
return (1);
TAILQ_FOREACH(sensor, &sc->sc_sensors, se_entry) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 05:02:12 +0000