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path: root/drivers/s390/scsi/zfcp_qdio.c
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Diffstat (limited to 'drivers/s390/scsi/zfcp_qdio.c')
-rw-r--r--drivers/s390/scsi/zfcp_qdio.c68
1 files changed, 46 insertions, 22 deletions
diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c
index 84527ebbbe58..2b499e28ff1f 100644
--- a/drivers/s390/scsi/zfcp_qdio.c
+++ b/drivers/s390/scsi/zfcp_qdio.c
@@ -34,27 +34,6 @@ zfcp_qdio_sbale(struct zfcp_qdio_queue *q, int sbal_idx, int sbale_idx)
return &q->sbal[sbal_idx]->element[sbale_idx];
}
-/**
- * zfcp_qdio_free - free memory used by request- and resposne queue
- * @qdio: pointer to the zfcp_qdio structure
- */
-void zfcp_qdio_free(struct zfcp_qdio *qdio)
-{
- struct qdio_buffer **sbal_req, **sbal_resp;
- int p;
-
- if (qdio->adapter->ccw_device)
- qdio_free(qdio->adapter->ccw_device);
-
- sbal_req = qdio->req_q.sbal;
- sbal_resp = qdio->resp_q.sbal;
-
- for (p = 0; p < QDIO_MAX_BUFFERS_PER_Q; p += QBUFF_PER_PAGE) {
- free_page((unsigned long) sbal_req[p]);
- free_page((unsigned long) sbal_resp[p]);
- }
-}
-
static void zfcp_qdio_handler_error(struct zfcp_qdio *qdio, char *id)
{
struct zfcp_adapter *adapter = qdio->adapter;
@@ -383,7 +362,7 @@ static void zfcp_qdio_setup_init_data(struct qdio_initialize *id,
* Returns: -ENOMEM on memory allocation error or return value from
* qdio_allocate
*/
-int zfcp_qdio_allocate(struct zfcp_qdio *qdio, struct ccw_device *ccw_dev)
+static int zfcp_qdio_allocate(struct zfcp_qdio *qdio)
{
struct qdio_initialize init_data;
@@ -477,3 +456,48 @@ failed_establish:
"Setting up the QDIO connection to the FCP adapter failed\n");
return -EIO;
}
+
+void zfcp_qdio_destroy(struct zfcp_qdio *qdio)
+{
+ struct qdio_buffer **sbal_req, **sbal_resp;
+ int p;
+
+ if (!qdio)
+ return;
+
+ if (qdio->adapter->ccw_device)
+ qdio_free(qdio->adapter->ccw_device);
+
+ sbal_req = qdio->req_q.sbal;
+ sbal_resp = qdio->resp_q.sbal;
+
+ for (p = 0; p < QDIO_MAX_BUFFERS_PER_Q; p += QBUFF_PER_PAGE) {
+ free_page((unsigned long) sbal_req[p]);
+ free_page((unsigned long) sbal_resp[p]);
+ }
+
+ kfree(qdio);
+}
+
+int zfcp_qdio_setup(struct zfcp_adapter *adapter)
+{
+ struct zfcp_qdio *qdio;
+
+ qdio = kzalloc(sizeof(struct zfcp_qdio), GFP_KERNEL);
+ if (!qdio)
+ return -ENOMEM;
+
+ qdio->adapter = adapter;
+
+ if (zfcp_qdio_allocate(qdio)) {
+ zfcp_qdio_destroy(qdio);
+ return -ENOMEM;
+ }
+
+ spin_lock_init(&qdio->req_q_lock);
+ spin_lock_init(&qdio->stat_lock);
+
+ adapter->qdio = qdio;
+ return 0;
+}
+