diff --git a/drivers/scsi/libsas/sas_event.c b/drivers/scsi/libsas/sas_event.c
index 0bb9eefc08c86a3a67329956b6c4627678255915..5d7254aa2dd2dc81c9ec20236b6dd2e652e4edc0 100644
--- a/drivers/scsi/libsas/sas_event.c
+++ b/drivers/scsi/libsas/sas_event.c
@@ -29,7 +29,8 @@
int sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw)
{
- int rc = 0;
+ /* it's added to the defer_q when draining so return succeed */
+ int rc = 1;
if (!test_bit(SAS_HA_REGISTERED, &ha->state))
return 0;
@@ -44,19 +45,15 @@ int sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw)
return rc;
}
-static int sas_queue_event(int event, unsigned long *pending,
- struct sas_work *work,
+static int sas_queue_event(int event, struct sas_work *work,
struct sas_ha_struct *ha)
{
- int rc = 0;
+ unsigned long flags;
+ int rc;
- if (!test_and_set_bit(event, pending)) {
- unsigned long flags;
-
- spin_lock_irqsave(&ha->lock, flags);
- rc = sas_queue_work(ha, work);
- spin_unlock_irqrestore(&ha->lock, flags);
- }
+ spin_lock_irqsave(&ha->lock, flags);
+ rc = sas_queue_work(ha, work);
+ spin_unlock_irqrestore(&ha->lock, flags);
return rc;
}
@@ -66,6 +63,7 @@ void __sas_drain_work(struct sas_ha_struct *ha)
{
struct workqueue_struct *wq = ha->core.shost->work_q;
struct sas_work *sw, *_sw;
+ int ret;
set_bit(SAS_HA_DRAINING, &ha->state);
/* flush submitters */
@@ -78,7 +76,10 @@ void __sas_drain_work(struct sas_ha_struct *ha)
clear_bit(SAS_HA_DRAINING, &ha->state);
list_for_each_entry_safe(sw, _sw, &ha->defer_q, drain_node) {
list_del_init(&sw->drain_node);
- sas_queue_work(ha, sw);
+ ret = sas_queue_work(ha, sw);
+ if (ret != 1)
+ sas_free_event(to_asd_sas_event(&sw->work));
+
}
spin_unlock_irq(&ha->lock);
}
@@ -119,29 +120,68 @@ void sas_enable_revalidation(struct sas_ha_struct *ha)
if (!test_and_clear_bit(ev, &d->pending))
continue;
- sas_queue_event(ev, &d->pending, &d->disc_work[ev].work, ha);
+ sas_queue_event(ev, &d->disc_work[ev].work, ha);
}
mutex_unlock(&ha->disco_mutex);
}
+
+static void sas_port_event_worker(struct work_struct *work)
+{
+ struct asd_sas_event *ev = to_asd_sas_event(work);
+
+ sas_port_event_fns[ev->event](work);
+ sas_free_event(ev);
+}
+
+static void sas_phy_event_worker(struct work_struct *work)
+{
+ struct asd_sas_event *ev = to_asd_sas_event(work);
+
+ sas_phy_event_fns[ev->event](work);
+ sas_free_event(ev);
+}
+
static int sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event)
{
+ struct asd_sas_event *ev;
struct sas_ha_struct *ha = phy->ha;
+ int ret;
BUG_ON(event >= PORT_NUM_EVENTS);
- return sas_queue_event(event, &phy->port_events_pending,
- &phy->port_events[event].work, ha);
+ ev = sas_alloc_event(phy);
+ if (!ev)
+ return -ENOMEM;
+
+ INIT_SAS_EVENT(ev, sas_port_event_worker, phy, event);
+
+ ret = sas_queue_event(event, &ev->work, ha);
+ if (ret != 1)
+ sas_free_event(ev);
+
+ return ret;
}
int sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event)
{
+ struct asd_sas_event *ev;
struct sas_ha_struct *ha = phy->ha;
+ int ret;
BUG_ON(event >= PHY_NUM_EVENTS);
- return sas_queue_event(event, &phy->phy_events_pending,
- &phy->phy_events[event].work, ha);
+ ev = sas_alloc_event(phy);
+ if (!ev)
+ return -ENOMEM;
+
+ INIT_SAS_EVENT(ev, sas_phy_event_worker, phy, event);
+
+ ret = sas_queue_event(event, &ev->work, ha);
+ if (ret != 1)
+ sas_free_event(ev);
+
+ return ret;
}
int sas_init_events(struct sas_ha_struct *sas_ha)
diff --git a/drivers/scsi/libsas/sas_init.c b/drivers/scsi/libsas/sas_init.c
index 64fa6f53cb8bafced9c0e9b44e787a12a55de63b..e04f6d6f5aff8fc992fbdba8951cc6668f79cfeb 100644
--- a/drivers/scsi/libsas/sas_init.c
+++ b/drivers/scsi/libsas/sas_init.c
@@ -39,6 +39,7 @@
#include "../scsi_sas_internal.h"
static struct kmem_cache *sas_task_cache;
+static struct kmem_cache *sas_event_cache;
struct sas_task *sas_alloc_task(gfp_t flags)
{
@@ -364,8 +365,6 @@ void sas_prep_resume_ha(struct sas_ha_struct *ha)
struct asd_sas_phy *phy = ha->sas_phy[i];
memset(phy->attached_sas_addr, 0, SAS_ADDR_SIZE);
- phy->port_events_pending = 0;
- phy->phy_events_pending = 0;
phy->frame_rcvd_size = 0;
}
}
@@ -555,20 +554,42 @@ sas_domain_attach_transport(struct sas_domain_function_template *dft)
}
EXPORT_SYMBOL_GPL(sas_domain_attach_transport);
+
+struct asd_sas_event *sas_alloc_event(struct asd_sas_phy *phy)
+{
+ gfp_t flags = in_interrupt() ? GFP_ATOMIC : GFP_KERNEL;
+
+ return kmem_cache_zalloc(sas_event_cache, flags);
+}
+
+void sas_free_event(struct asd_sas_event *event)
+{
+ kmem_cache_free(sas_event_cache, event);
+}
+
/* ---------- SAS Class register/unregister ---------- */
static int __init sas_class_init(void)
{
sas_task_cache = KMEM_CACHE(sas_task, SLAB_HWCACHE_ALIGN);
if (!sas_task_cache)
- return -ENOMEM;
+ goto out;
+
+ sas_event_cache = KMEM_CACHE(asd_sas_event, SLAB_HWCACHE_ALIGN);
+ if (!sas_event_cache)
+ goto free_task_kmem;
return 0;
+free_task_kmem:
+ kmem_cache_destroy(sas_task_cache);
+out:
+ return -ENOMEM;
}
static void __exit sas_class_exit(void)
{
kmem_cache_destroy(sas_task_cache);
+ kmem_cache_destroy(sas_event_cache);
}
MODULE_AUTHOR("Luben Tuikov <luben_tuikov@adaptec.com>");
diff --git a/drivers/scsi/libsas/sas_internal.h b/drivers/scsi/libsas/sas_internal.h
index c07e0813649153d609f52e166c39b51a032a9e49..d8826a747690dad7aed2e2e0c1f7e1bdb5024b6d 100644
--- a/drivers/scsi/libsas/sas_internal.h
+++ b/drivers/scsi/libsas/sas_internal.h
@@ -61,6 +61,9 @@ int sas_show_oob_mode(enum sas_oob_mode oob_mode, char *buf);
int sas_register_phys(struct sas_ha_struct *sas_ha);
void sas_unregister_phys(struct sas_ha_struct *sas_ha);
+struct asd_sas_event *sas_alloc_event(struct asd_sas_phy *phy);
+void sas_free_event(struct asd_sas_event *event);
+
int sas_register_ports(struct sas_ha_struct *sas_ha);
void sas_unregister_ports(struct sas_ha_struct *sas_ha);
@@ -99,6 +102,9 @@ void sas_hae_reset(struct work_struct *work);
void sas_free_device(struct kref *kref);
+extern const work_func_t sas_phy_event_fns[PHY_NUM_EVENTS];
+extern const work_func_t sas_port_event_fns[PORT_NUM_EVENTS];
+
#ifdef CONFIG_SCSI_SAS_HOST_SMP
extern void sas_smp_host_handler(struct bsg_job *job, struct Scsi_Host *shost);
#else
diff --git a/drivers/scsi/libsas/sas_phy.c b/drivers/scsi/libsas/sas_phy.c
index cdee446c29e1319078999d67176b3f9a2af8915f..59f82929b0a3635c503aa22432c01a090c6af85f 100644
--- a/drivers/scsi/libsas/sas_phy.c
+++ b/drivers/scsi/libsas/sas_phy.c
@@ -35,7 +35,6 @@ static void sas_phye_loss_of_signal(struct work_struct *work)
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
- clear_bit(PHYE_LOSS_OF_SIGNAL, &phy->phy_events_pending);
phy->error = 0;
sas_deform_port(phy, 1);
}
@@ -45,7 +44,6 @@ static void sas_phye_oob_done(struct work_struct *work)
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
- clear_bit(PHYE_OOB_DONE, &phy->phy_events_pending);
phy->error = 0;
}
@@ -58,8 +56,6 @@ static void sas_phye_oob_error(struct work_struct *work)
struct sas_internal *i =
to_sas_internal(sas_ha->core.shost->transportt);
- clear_bit(PHYE_OOB_ERROR, &phy->phy_events_pending);
-
sas_deform_port(phy, 1);
if (!port && phy->enabled && i->dft->lldd_control_phy) {
@@ -88,8 +84,6 @@ static void sas_phye_spinup_hold(struct work_struct *work)
struct sas_internal *i =
to_sas_internal(sas_ha->core.shost->transportt);
- clear_bit(PHYE_SPINUP_HOLD, &phy->phy_events_pending);
-
phy->error = 0;
i->dft->lldd_control_phy(phy, PHY_FUNC_RELEASE_SPINUP_HOLD, NULL);
}
@@ -99,8 +93,6 @@ static void sas_phye_resume_timeout(struct work_struct *work)
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
- clear_bit(PHYE_RESUME_TIMEOUT, &phy->phy_events_pending);
-
/* phew, lldd got the phy back in the nick of time */
if (!phy->suspended) {
dev_info(&phy->phy->dev, "resume timeout cancelled\n");
@@ -119,39 +111,12 @@ int sas_register_phys(struct sas_ha_struct *sas_ha)
{
int i;
- static const work_func_t sas_phy_event_fns[PHY_NUM_EVENTS] = {
- [PHYE_LOSS_OF_SIGNAL] = sas_phye_loss_of_signal,
- [PHYE_OOB_DONE] = sas_phye_oob_done,
- [PHYE_OOB_ERROR] = sas_phye_oob_error,
- [PHYE_SPINUP_HOLD] = sas_phye_spinup_hold,
- [PHYE_RESUME_TIMEOUT] = sas_phye_resume_timeout,
-
- };
-
- static const work_func_t sas_port_event_fns[PORT_NUM_EVENTS] = {
- [PORTE_BYTES_DMAED] = sas_porte_bytes_dmaed,
- [PORTE_BROADCAST_RCVD] = sas_porte_broadcast_rcvd,
- [PORTE_LINK_RESET_ERR] = sas_porte_link_reset_err,
- [PORTE_TIMER_EVENT] = sas_porte_timer_event,
- [PORTE_HARD_RESET] = sas_porte_hard_reset,
- };
-
/* Now register the phys. */
for (i = 0; i < sas_ha->num_phys; i++) {
- int k;
struct asd_sas_phy *phy = sas_ha->sas_phy[i];
phy->error = 0;
INIT_LIST_HEAD(&phy->port_phy_el);
- for (k = 0; k < PORT_NUM_EVENTS; k++) {
- INIT_SAS_WORK(&phy->port_events[k].work, sas_port_event_fns[k]);
- phy->port_events[k].phy = phy;
- }
-
- for (k = 0; k < PHY_NUM_EVENTS; k++) {
- INIT_SAS_WORK(&phy->phy_events[k].work, sas_phy_event_fns[k]);
- phy->phy_events[k].phy = phy;
- }
phy->port = NULL;
phy->ha = sas_ha;
@@ -179,3 +144,12 @@ int sas_register_phys(struct sas_ha_struct *sas_ha)
return 0;
}
+
+const work_func_t sas_phy_event_fns[PHY_NUM_EVENTS] = {
+ [PHYE_LOSS_OF_SIGNAL] = sas_phye_loss_of_signal,
+ [PHYE_OOB_DONE] = sas_phye_oob_done,
+ [PHYE_OOB_ERROR] = sas_phye_oob_error,
+ [PHYE_SPINUP_HOLD] = sas_phye_spinup_hold,
+ [PHYE_RESUME_TIMEOUT] = sas_phye_resume_timeout,
+
+};
diff --git a/drivers/scsi/libsas/sas_port.c b/drivers/scsi/libsas/sas_port.c
index d3c5297c6c89e242d845d16142f7a309ed4ef773..93266283f51ff0c606b4e5d7210aa0f5d63d48ab 100644
--- a/drivers/scsi/libsas/sas_port.c
+++ b/drivers/scsi/libsas/sas_port.c
@@ -261,8 +261,6 @@ void sas_porte_bytes_dmaed(struct work_struct *work)
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
- clear_bit(PORTE_BYTES_DMAED, &phy->port_events_pending);
-
sas_form_port(phy);
}
@@ -273,8 +271,6 @@ void sas_porte_broadcast_rcvd(struct work_struct *work)
unsigned long flags;
u32 prim;
- clear_bit(PORTE_BROADCAST_RCVD, &phy->port_events_pending);
-
spin_lock_irqsave(&phy->sas_prim_lock, flags);
prim = phy->sas_prim;
spin_unlock_irqrestore(&phy->sas_prim_lock, flags);
@@ -288,8 +284,6 @@ void sas_porte_link_reset_err(struct work_struct *work)
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
- clear_bit(PORTE_LINK_RESET_ERR, &phy->port_events_pending);
-
sas_deform_port(phy, 1);
}
@@ -298,8 +292,6 @@ void sas_porte_timer_event(struct work_struct *work)
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
- clear_bit(PORTE_TIMER_EVENT, &phy->port_events_pending);
-
sas_deform_port(phy, 1);
}
@@ -308,8 +300,6 @@ void sas_porte_hard_reset(struct work_struct *work)
struct asd_sas_event *ev = to_asd_sas_event(work);
struct asd_sas_phy *phy = ev->phy;
- clear_bit(PORTE_HARD_RESET, &phy->port_events_pending);
-
sas_deform_port(phy, 1);
}
@@ -353,3 +343,11 @@ void sas_unregister_ports(struct sas_ha_struct *sas_ha)
sas_deform_port(sas_ha->sas_phy[i], 0);
}
+
+const work_func_t sas_port_event_fns[PORT_NUM_EVENTS] = {
+ [PORTE_BYTES_DMAED] = sas_porte_bytes_dmaed,
+ [PORTE_BROADCAST_RCVD] = sas_porte_broadcast_rcvd,
+ [PORTE_LINK_RESET_ERR] = sas_porte_link_reset_err,
+ [PORTE_TIMER_EVENT] = sas_porte_timer_event,
+ [PORTE_HARD_RESET] = sas_porte_hard_reset,
+};
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 0f9cbf96c093d86ae926ae5380f82eb454fecd02..ee1b25299dd6080f0fd4d1d84aee057a6e2fa0d2 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -292,6 +292,7 @@ struct asd_sas_port {
struct asd_sas_event {
struct sas_work work;
struct asd_sas_phy *phy;
+ int event;
};
static inline struct asd_sas_event *to_asd_sas_event(struct work_struct *work)
@@ -301,17 +302,21 @@ static inline struct asd_sas_event *to_asd_sas_event(struct work_struct *work)
return ev;
}
+static inline void INIT_SAS_EVENT(struct asd_sas_event *ev,
+ void (*fn)(struct work_struct *),
+ struct asd_sas_phy *phy, int event)
+{
+ INIT_SAS_WORK(&ev->work, fn);
+ ev->phy = phy;
+ ev->event = event;
+}
+
+
/* The phy pretty much is controlled by the LLDD.
* The class only reads those fields.
*/
struct asd_sas_phy {
/* private: */
- struct asd_sas_event port_events[PORT_NUM_EVENTS];
- struct asd_sas_event phy_events[PHY_NUM_EVENTS];
-
- unsigned long port_events_pending;
- unsigned long phy_events_pending;
-
int error;
int suspended;