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path: root/drivers/scsi/libsas/sas_init.c
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Diffstat (limited to 'drivers/scsi/libsas/sas_init.c')
-rw-r--r--drivers/scsi/libsas/sas_init.c43
1 files changed, 36 insertions, 7 deletions
diff --git a/drivers/scsi/libsas/sas_init.c b/drivers/scsi/libsas/sas_init.c
index 2dc55343f671..d81c3b1989f7 100644
--- a/drivers/scsi/libsas/sas_init.c
+++ b/drivers/scsi/libsas/sas_init.c
@@ -37,7 +37,32 @@
#include "../scsi_sas_internal.h"
-struct kmem_cache *sas_task_cache;
+static struct kmem_cache *sas_task_cache;
+
+struct sas_task *sas_alloc_task(gfp_t flags)
+{
+ struct sas_task *task = kmem_cache_zalloc(sas_task_cache, flags);
+
+ if (task) {
+ INIT_LIST_HEAD(&task->list);
+ spin_lock_init(&task->task_state_lock);
+ task->task_state_flags = SAS_TASK_STATE_PENDING;
+ init_timer(&task->timer);
+ init_completion(&task->completion);
+ }
+
+ return task;
+}
+EXPORT_SYMBOL_GPL(sas_alloc_task);
+
+void sas_free_task(struct sas_task *task)
+{
+ if (task) {
+ BUG_ON(!list_empty(&task->list));
+ kmem_cache_free(sas_task_cache, task);
+ }
+}
+EXPORT_SYMBOL_GPL(sas_free_task);
/*------------ SAS addr hash -----------*/
void sas_hash_addr(u8 *hashed, const u8 *sas_addr)
@@ -152,10 +177,15 @@ int sas_unregister_ha(struct sas_ha_struct *sas_ha)
static int sas_get_linkerrors(struct sas_phy *phy)
{
- if (scsi_is_sas_phy_local(phy))
- /* FIXME: we have no local phy stats
- * gathering at this time */
- return -EINVAL;
+ if (scsi_is_sas_phy_local(phy)) {
+ struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
+ struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
+ struct asd_sas_phy *asd_phy = sas_ha->sas_phy[phy->number];
+ struct sas_internal *i =
+ to_sas_internal(sas_ha->core.shost->transportt);
+
+ return i->dft->lldd_control_phy(asd_phy, PHY_FUNC_GET_EVENTS, NULL);
+ }
return sas_smp_get_phy_events(phy);
}
@@ -293,8 +323,7 @@ EXPORT_SYMBOL_GPL(sas_domain_release_transport);
static int __init sas_class_init(void)
{
- sas_task_cache = kmem_cache_create("sas_task", sizeof(struct sas_task),
- 0, SLAB_HWCACHE_ALIGN, NULL);
+ sas_task_cache = KMEM_CACHE(sas_task, SLAB_HWCACHE_ALIGN);
if (!sas_task_cache)
return -ENOMEM;