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| author | Swen Schillig | 2008-06-10 18:20:57 +0200 |
|---|---|---|
| committer | James Bottomley | 2008-07-12 15:22:25 +0200 |
| commit | 00bab91066a49468bfa4f6d5c8ad5e9ec53b7ea3 (patch) | |
| tree | a5ce7bfe5ad290c339f669b3596b75f5238157c6 /drivers/s390/scsi/zfcp_def.h | |
| parent | [SCSI] zfcp: Cleanup code in zfcp_ccw (diff) | |
| download | kernel-qcow2-linux-00bab91066a49468bfa4f6d5c8ad5e9ec53b7ea3.tar.gz kernel-qcow2-linux-00bab91066a49468bfa4f6d5c8ad5e9ec53b7ea3.tar.xz kernel-qcow2-linux-00bab91066a49468bfa4f6d5c8ad5e9ec53b7ea3.zip | |
[SCSI] zfcp: Cleanup qdio code
Cleanup the interface code from zfcp to qdio. Also move code that
belongs to the qdio interface from the erp to the qdio file.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/s390/scsi/zfcp_def.h')
| -rw-r--r-- | drivers/s390/scsi/zfcp_def.h | 26 |
1 files changed, 7 insertions, 19 deletions
diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index 72f225817ebd..5fcb555e1484 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -112,21 +112,10 @@ zfcp_address_to_sg(void *address, struct scatterlist *list, unsigned int size) /* max. number of (data buffer) SBALEs in largest SBAL chain multiplied with number of sectors per 4k block */ -/* FIXME(tune): free space should be one max. SBAL chain plus what? */ -#define ZFCP_QDIO_PCI_INTERVAL (QDIO_MAX_BUFFERS_PER_Q \ - - (ZFCP_MAX_SBALS_PER_REQ + 4)) - #define ZFCP_SBAL_TIMEOUT (5*HZ) #define ZFCP_TYPE2_RECOVERY_TIME 8 /* seconds */ -/* queue polling (values in microseconds) */ -#define ZFCP_MAX_INPUT_THRESHOLD 5000 /* FIXME: tune */ -#define ZFCP_MAX_OUTPUT_THRESHOLD 1000 /* FIXME: tune */ -#define ZFCP_MIN_INPUT_THRESHOLD 1 /* ignored by QDIO layer */ -#define ZFCP_MIN_OUTPUT_THRESHOLD 1 /* ignored by QDIO layer */ - -#define QDIO_SCSI_QFMT 1 /* 1 for FSF */ #define QBUFF_PER_PAGE (PAGE_SIZE / sizeof(struct qdio_buffer)) /********************* FSF SPECIFIC DEFINES *********************************/ @@ -649,13 +638,13 @@ struct zfcp_send_els { }; struct zfcp_qdio_queue { - struct qdio_buffer *buffer[QDIO_MAX_BUFFERS_PER_Q]; /* SBALs */ - u8 free_index; /* index of next free bfr + struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q]; /* SBALs */ + u8 first; /* index of next free bfr in queue (free_count>0) */ - atomic_t free_count; /* number of free buffers + atomic_t count; /* number of free buffers in queue */ - rwlock_t queue_lock; /* lock for operations on queue */ - int distance_from_int; /* SBALs used since PCI indication + rwlock_t lock; /* lock for operations on queue */ + int pci_batch; /* SBALs since PCI indication was last set */ }; @@ -711,15 +700,14 @@ struct zfcp_adapter { struct list_head port_remove_lh; /* head of ports to be removed */ u32 ports; /* number of remote ports */ - atomic_t reqs_active; /* # active FSF reqs */ unsigned long req_no; /* unique FSF req number */ struct list_head *req_list; /* list of pending reqs */ spinlock_t req_list_lock; /* request list lock */ - struct zfcp_qdio_queue request_queue; /* request queue */ + struct zfcp_qdio_queue req_q; /* request queue */ u32 fsf_req_seq_no; /* FSF cmnd seq number */ wait_queue_head_t request_wq; /* can be used to wait for more avaliable SBALs */ - struct zfcp_qdio_queue response_queue; /* response queue */ + struct zfcp_qdio_queue resp_q; /* response queue */ rwlock_t abort_lock; /* Protects against SCSI stack abort/command completion races */ |