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authorChristof Schmitt <christof.schmitt@de.ibm.com>2010-02-17 11:18:59 +0100
committerJames Bottomley <James.Bottomley@suse.de>2010-02-17 17:46:35 -0600
commit34c2b712992540ca436e97432ffc57c84c8f8c18 (patch)
tree94ee5b92c29c1c79a87c861b8f69de5060bc1f72 /drivers/s390/scsi/zfcp_qdio.c
parent2d8e62bbf7e83facd5701c100f62fbf0df4ee486 (diff)
downloadop-kernel-dev-34c2b712992540ca436e97432ffc57c84c8f8c18.zip
op-kernel-dev-34c2b712992540ca436e97432ffc57c84c8f8c18.tar.gz
[SCSI] zfcp: Introduce header file for qdio structs and inline functions
Move the qdio related structs and some helper functions to a new zfcp_qdio.h header file. While doing this, rename the struct zfcp_queue_req to zfcp_qdio_req to adhere to the naming scheme used in zfcp. This allows a better seperation of the qdio code and inlining the helper functions will save some function calls. Reviewed-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/s390/scsi/zfcp_qdio.c')
-rw-r--r--drivers/s390/scsi/zfcp_qdio.c48
1 files changed, 9 insertions, 39 deletions
diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c
index 3d329fa..71b97ff7 100644
--- a/drivers/s390/scsi/zfcp_qdio.c
+++ b/drivers/s390/scsi/zfcp_qdio.c
@@ -10,6 +10,7 @@
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include "zfcp_ext.h"
+#include "zfcp_qdio.h"
#define QBUFF_PER_PAGE (PAGE_SIZE / sizeof(struct qdio_buffer))
@@ -28,12 +29,6 @@ static int zfcp_qdio_buffers_enqueue(struct qdio_buffer **sbal)
return 0;
}
-static struct qdio_buffer_element *
-zfcp_qdio_sbale(struct zfcp_qdio_queue *q, int sbal_idx, int sbale_idx)
-{
- return &q->sbal[sbal_idx]->element[sbale_idx];
-}
-
static void zfcp_qdio_handler_error(struct zfcp_qdio *qdio, char *id)
{
struct zfcp_adapter *adapter = qdio->adapter;
@@ -145,32 +140,8 @@ static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int qdio_err,
zfcp_qdio_resp_put_back(qdio, count);
}
-/**
- * zfcp_qdio_sbale_req - return ptr to SBALE of req_q for a struct zfcp_fsf_req
- * @qdio: pointer to struct zfcp_qdio
- * @q_rec: pointer to struct zfcp_queue_rec
- * Returns: pointer to qdio_buffer_element (SBALE) structure
- */
-struct qdio_buffer_element *zfcp_qdio_sbale_req(struct zfcp_qdio *qdio,
- struct zfcp_queue_req *q_req)
-{
- return zfcp_qdio_sbale(&qdio->req_q, q_req->sbal_last, 0);
-}
-
-/**
- * zfcp_qdio_sbale_curr - return curr SBALE on req_q for a struct zfcp_fsf_req
- * @fsf_req: pointer to struct fsf_req
- * Returns: pointer to qdio_buffer_element (SBALE) structure
- */
-struct qdio_buffer_element *zfcp_qdio_sbale_curr(struct zfcp_qdio *qdio,
- struct zfcp_queue_req *q_req)
-{
- return zfcp_qdio_sbale(&qdio->req_q, q_req->sbal_last,
- q_req->sbale_curr);
-}
-
static void zfcp_qdio_sbal_limit(struct zfcp_qdio *qdio,
- struct zfcp_queue_req *q_req, int max_sbals)
+ struct zfcp_qdio_req *q_req, int max_sbals)
{
int count = atomic_read(&qdio->req_q.count);
count = min(count, max_sbals);
@@ -179,7 +150,7 @@ static void zfcp_qdio_sbal_limit(struct zfcp_qdio *qdio,
}
static struct qdio_buffer_element *
-zfcp_qdio_sbal_chain(struct zfcp_qdio *qdio, struct zfcp_queue_req *q_req,
+zfcp_qdio_sbal_chain(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req,
unsigned long sbtype)
{
struct qdio_buffer_element *sbale;
@@ -214,7 +185,7 @@ zfcp_qdio_sbal_chain(struct zfcp_qdio *qdio, struct zfcp_queue_req *q_req,
}
static struct qdio_buffer_element *
-zfcp_qdio_sbale_next(struct zfcp_qdio *qdio, struct zfcp_queue_req *q_req,
+zfcp_qdio_sbale_next(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req,
unsigned int sbtype)
{
if (q_req->sbale_curr == ZFCP_LAST_SBALE_PER_SBAL)
@@ -224,7 +195,7 @@ zfcp_qdio_sbale_next(struct zfcp_qdio *qdio, struct zfcp_queue_req *q_req,
}
static void zfcp_qdio_undo_sbals(struct zfcp_qdio *qdio,
- struct zfcp_queue_req *q_req)
+ struct zfcp_qdio_req *q_req)
{
struct qdio_buffer **sbal = qdio->req_q.sbal;
int first = q_req->sbal_first;
@@ -235,7 +206,7 @@ static void zfcp_qdio_undo_sbals(struct zfcp_qdio *qdio,
}
static int zfcp_qdio_fill_sbals(struct zfcp_qdio *qdio,
- struct zfcp_queue_req *q_req,
+ struct zfcp_qdio_req *q_req,
unsigned int sbtype, void *start_addr,
unsigned int total_length)
{
@@ -271,8 +242,7 @@ static int zfcp_qdio_fill_sbals(struct zfcp_qdio *qdio,
* @max_sbals: upper bound for number of SBALs to be used
* Returns: number of bytes, or error (negativ)
*/
-int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *qdio,
- struct zfcp_queue_req *q_req,
+int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req,
unsigned long sbtype, struct scatterlist *sg,
int max_sbals)
{
@@ -304,10 +274,10 @@ int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *qdio,
/**
* zfcp_qdio_send - set PCI flag in first SBALE and send req to QDIO
* @qdio: pointer to struct zfcp_qdio
- * @q_req: pointer to struct zfcp_queue_req
+ * @q_req: pointer to struct zfcp_qdio_req
* Returns: 0 on success, error otherwise
*/
-int zfcp_qdio_send(struct zfcp_qdio *qdio, struct zfcp_queue_req *q_req)
+int zfcp_qdio_send(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req)
{
struct zfcp_qdio_queue *req_q = &qdio->req_q;
int first = q_req->sbal_first;
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