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Diffstat (limited to 'drivers/s390/scsi/zfcp_def.h')
-rw-r--r--drivers/s390/scsi/zfcp_def.h107
1 files changed, 72 insertions, 35 deletions
diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
index 9fa1b064893..d91173f326c 100644
--- a/drivers/s390/scsi/zfcp_def.h
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -3,7 +3,7 @@
*
* Global definitions for the zfcp device driver.
*
- * Copyright IBM Corporation 2002, 2010
+ * Copyright IBM Corp. 2002, 2010
*/
#ifndef ZFCP_DEF_H
@@ -37,6 +37,7 @@
#include <asm/ebcdic.h>
#include <asm/sysinfo.h>
#include "zfcp_fsf.h"
+#include "zfcp_fc.h"
#include "zfcp_qdio.h"
struct zfcp_reqlist;
@@ -71,22 +72,21 @@ struct zfcp_reqlist;
#define ZFCP_STATUS_COMMON_NOESC 0x00200000
/* adapter status */
+#define ZFCP_STATUS_ADAPTER_MB_ACT 0x00000001
#define ZFCP_STATUS_ADAPTER_QDIOUP 0x00000002
+#define ZFCP_STATUS_ADAPTER_SIOSL_ISSUED 0x00000004
#define ZFCP_STATUS_ADAPTER_XCONFIG_OK 0x00000008
#define ZFCP_STATUS_ADAPTER_HOST_CON_INIT 0x00000010
+#define ZFCP_STATUS_ADAPTER_SUSPENDED 0x00000040
#define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100
#define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200
+#define ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED 0x00000400
/* remote port status */
#define ZFCP_STATUS_PORT_PHYS_OPEN 0x00000001
#define ZFCP_STATUS_PORT_LINK_TEST 0x00000002
-/* logical unit status */
-#define ZFCP_STATUS_UNIT_SHARED 0x00000004
-#define ZFCP_STATUS_UNIT_READONLY 0x00000008
-
/* FSF request status (this does not have a common part) */
-#define ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT 0x00000002
#define ZFCP_STATUS_FSFREQ_ERROR 0x00000008
#define ZFCP_STATUS_FSFREQ_CLEANUP 0x00000010
#define ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED 0x00000040
@@ -105,7 +105,7 @@ struct zfcp_adapter_mempool {
mempool_t *scsi_req;
mempool_t *scsi_abort;
mempool_t *status_read_req;
- mempool_t *status_read_data;
+ mempool_t *sr_data;
mempool_t *gid_pn;
mempool_t *qtcb_pool;
};
@@ -115,7 +115,7 @@ struct zfcp_erp_action {
int action; /* requested action code */
struct zfcp_adapter *adapter; /* device which should be recovered */
struct zfcp_port *port;
- struct zfcp_unit *unit;
+ struct scsi_device *sdev;
u32 status; /* recovery status */
u32 step; /* active step of this erp action */
unsigned long fsf_req_id;
@@ -187,9 +187,11 @@ struct zfcp_adapter {
struct fsf_qtcb_bottom_port *stats_reset_data;
unsigned long stats_reset;
struct work_struct scan_work;
+ struct work_struct ns_up_work;
struct service_level service_level;
struct workqueue_struct *work_queue;
struct device_dma_parameters dma_parms;
+ struct zfcp_fc_events events;
};
struct zfcp_port {
@@ -199,6 +201,7 @@ struct zfcp_port {
struct zfcp_adapter *adapter; /* adapter used to access port */
struct list_head unit_list; /* head of logical unit list */
rwlock_t unit_list_lock; /* unit list lock */
+ atomic_t units; /* zfcp_unit count */
atomic_t status; /* status of this remote port */
u64 wwnn; /* WWNN if known */
u64 wwpn; /* WWPN */
@@ -212,23 +215,69 @@ struct zfcp_port {
struct work_struct test_link_work;
struct work_struct rport_work;
enum { RPORT_NONE, RPORT_ADD, RPORT_DEL } rport_task;
+ unsigned int starget_id;
};
+/**
+ * struct zfcp_unit - LUN configured via zfcp sysfs
+ * @dev: struct device for sysfs representation and reference counting
+ * @list: entry in LUN/unit list per zfcp_port
+ * @port: reference to zfcp_port where this LUN is configured
+ * @fcp_lun: 64 bit LUN value
+ * @scsi_work: for running scsi_scan_target
+ *
+ * This is the representation of a LUN that has been configured for
+ * usage. The main data here is the 64 bit LUN value, data for
+ * running I/O and recovery is in struct zfcp_scsi_dev.
+ */
struct zfcp_unit {
- struct device dev;
- struct list_head list; /* list of logical units */
- struct zfcp_port *port; /* remote port of unit */
- atomic_t status; /* status of this logical unit */
- u64 fcp_lun; /* own FCP_LUN */
- u32 handle; /* handle assigned by FSF */
- struct scsi_device *device; /* scsi device struct pointer */
- struct zfcp_erp_action erp_action; /* pending error recovery */
- atomic_t erp_counter;
- struct zfcp_latencies latencies;
+ struct device dev;
+ struct list_head list;
+ struct zfcp_port *port;
+ u64 fcp_lun;
struct work_struct scsi_work;
};
/**
+ * struct zfcp_scsi_dev - zfcp data per SCSI device
+ * @status: zfcp internal status flags
+ * @lun_handle: handle from "open lun" for issuing FSF requests
+ * @erp_action: zfcp erp data for opening and recovering this LUN
+ * @erp_counter: zfcp erp counter for this LUN
+ * @latencies: FSF channel and fabric latencies
+ * @port: zfcp_port where this LUN belongs to
+ */
+struct zfcp_scsi_dev {
+ atomic_t status;
+ u32 lun_handle;
+ struct zfcp_erp_action erp_action;
+ atomic_t erp_counter;
+ struct zfcp_latencies latencies;
+ struct zfcp_port *port;
+};
+
+/**
+ * sdev_to_zfcp - Access zfcp LUN data for SCSI device
+ * @sdev: scsi_device where to get the zfcp_scsi_dev pointer
+ */
+static inline struct zfcp_scsi_dev *sdev_to_zfcp(struct scsi_device *sdev)
+{
+ return scsi_transport_device_data(sdev);
+}
+
+/**
+ * zfcp_scsi_dev_lun - Return SCSI device LUN as 64 bit FCP LUN
+ * @sdev: SCSI device where to get the LUN from
+ */
+static inline u64 zfcp_scsi_dev_lun(struct scsi_device *sdev)
+{
+ u64 fcp_lun;
+
+ int_to_scsilun(sdev->lun, (struct scsi_lun *)&fcp_lun);
+ return fcp_lun;
+}
+
+/**
* struct zfcp_fsf_req - basic FSF request structure
* @list: list of FSF requests
* @req_id: unique request ID
@@ -244,7 +293,6 @@ struct zfcp_unit {
* @erp_action: reference to erp action if request issued on behalf of ERP
* @pool: reference to memory pool if used for this request
* @issued: time when request was send (STCK)
- * @unit: reference to unit if this request is a SCSI request
* @handler: handler which should be called to process response
*/
struct zfcp_fsf_req {
@@ -262,24 +310,13 @@ struct zfcp_fsf_req {
struct zfcp_erp_action *erp_action;
mempool_t *pool;
unsigned long long issued;
- struct zfcp_unit *unit;
void (*handler)(struct zfcp_fsf_req *);
};
-/* driver data */
-struct zfcp_data {
- struct scsi_host_template scsi_host_template;
- struct scsi_transport_template *scsi_transport_template;
- struct kmem_cache *gpn_ft_cache;
- struct kmem_cache *qtcb_cache;
- struct kmem_cache *sr_buffer_cache;
- struct kmem_cache *gid_pn_cache;
- struct kmem_cache *adisc_cache;
-};
-
-/********************** ZFCP SPECIFIC DEFINES ********************************/
-
-#define ZFCP_SET 0x00000100
-#define ZFCP_CLEAR 0x00000200
+static inline
+int zfcp_adapter_multi_buffer_active(struct zfcp_adapter *adapter)
+{
+ return atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_MB_ACT;
+}
#endif /* ZFCP_DEF_H */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-21 07:48:46 +0000