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Diffstat (limited to 'drivers/s390/scsi/zfcp_def.h')
-rw-r--r--drivers/s390/scsi/zfcp_def.h323
1 files changed, 8 insertions, 315 deletions
diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
index 7da2fad8f51..e1b5b88e2dd 100644
--- a/drivers/s390/scsi/zfcp_def.h
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -71,131 +71,6 @@
/* timeout value for "default timer" for fsf requests */
#define ZFCP_FSF_REQUEST_TIMEOUT (60*HZ)
-/*************** FIBRE CHANNEL PROTOCOL SPECIFIC DEFINES ********************/
-
-/* task attribute values in FCP-2 FCP_CMND IU */
-#define SIMPLE_Q 0
-#define HEAD_OF_Q 1
-#define ORDERED_Q 2
-#define ACA_Q 4
-#define UNTAGGED 5
-
-/* task management flags in FCP-2 FCP_CMND IU */
-#define FCP_CLEAR_ACA 0x40
-#define FCP_TARGET_RESET 0x20
-#define FCP_LOGICAL_UNIT_RESET 0x10
-#define FCP_CLEAR_TASK_SET 0x04
-#define FCP_ABORT_TASK_SET 0x02
-
-#define FCP_CDB_LENGTH 16
-
-#define ZFCP_DID_MASK 0x00FFFFFF
-
-/* FCP(-2) FCP_CMND IU */
-struct fcp_cmnd_iu {
- u64 fcp_lun; /* FCP logical unit number */
- u8 crn; /* command reference number */
- u8 reserved0:5; /* reserved */
- u8 task_attribute:3; /* task attribute */
- u8 task_management_flags; /* task management flags */
- u8 add_fcp_cdb_length:6; /* additional FCP_CDB length */
- u8 rddata:1; /* read data */
- u8 wddata:1; /* write data */
- u8 fcp_cdb[FCP_CDB_LENGTH];
-} __attribute__((packed));
-
-/* FCP(-2) FCP_RSP IU */
-struct fcp_rsp_iu {
- u8 reserved0[10];
- union {
- struct {
- u8 reserved1:3;
- u8 fcp_conf_req:1;
- u8 fcp_resid_under:1;
- u8 fcp_resid_over:1;
- u8 fcp_sns_len_valid:1;
- u8 fcp_rsp_len_valid:1;
- } bits;
- u8 value;
- } validity;
- u8 scsi_status;
- u32 fcp_resid;
- u32 fcp_sns_len;
- u32 fcp_rsp_len;
-} __attribute__((packed));
-
-
-#define RSP_CODE_GOOD 0
-#define RSP_CODE_LENGTH_MISMATCH 1
-#define RSP_CODE_FIELD_INVALID 2
-#define RSP_CODE_RO_MISMATCH 3
-#define RSP_CODE_TASKMAN_UNSUPP 4
-#define RSP_CODE_TASKMAN_FAILED 5
-
-/* see fc-fs */
-#define LS_RSCN 0x61
-#define LS_LOGO 0x05
-#define LS_PLOGI 0x03
-
-struct fcp_rscn_head {
- u8 command;
- u8 page_length; /* always 0x04 */
- u16 payload_len;
-} __attribute__((packed));
-
-struct fcp_rscn_element {
- u8 reserved:2;
- u8 event_qual:4;
- u8 addr_format:2;
- u32 nport_did:24;
-} __attribute__((packed));
-
-/* see fc-ph */
-struct fcp_logo {
- u32 command;
- u32 nport_did;
- u64 nport_wwpn;
-} __attribute__((packed));
-
-/*
- * FC-FS stuff
- */
-#define R_A_TOV 10 /* seconds */
-
-#define ZFCP_LS_RLS 0x0f
-#define ZFCP_LS_ADISC 0x52
-#define ZFCP_LS_RPS 0x56
-#define ZFCP_LS_RSCN 0x61
-#define ZFCP_LS_RNID 0x78
-
-struct zfcp_ls_adisc {
- u8 code;
- u8 field[3];
- u32 hard_nport_id;
- u64 wwpn;
- u64 wwnn;
- u32 nport_id;
-} __attribute__ ((packed));
-
-/*
- * FC-GS-2 stuff
- */
-#define ZFCP_CT_REVISION 0x01
-#define ZFCP_CT_DIRECTORY_SERVICE 0xFC
-#define ZFCP_CT_NAME_SERVER 0x02
-#define ZFCP_CT_SYNCHRONOUS 0x00
-#define ZFCP_CT_SCSI_FCP 0x08
-#define ZFCP_CT_UNABLE_TO_PERFORM_CMD 0x09
-#define ZFCP_CT_GID_PN 0x0121
-#define ZFCP_CT_GPN_FT 0x0172
-#define ZFCP_CT_ACCEPT 0x8002
-#define ZFCP_CT_REJECT 0x8001
-
-/*
- * FC-GS-4 stuff
- */
-#define ZFCP_CT_TIMEOUT (3 * R_A_TOV)
-
/*************** ADAPTER/PORT/UNIT AND FSF_REQ STATUS FLAGS ******************/
/*
@@ -205,7 +80,6 @@ struct zfcp_ls_adisc {
#define ZFCP_COMMON_FLAGS 0xfff00000
/* common status bits */
-#define ZFCP_STATUS_COMMON_REMOVE 0x80000000
#define ZFCP_STATUS_COMMON_RUNNING 0x40000000
#define ZFCP_STATUS_COMMON_ERP_FAILED 0x20000000
#define ZFCP_STATUS_COMMON_UNBLOCKED 0x10000000
@@ -222,21 +96,10 @@ struct zfcp_ls_adisc {
#define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100
#define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200
-/* FC-PH/FC-GS well-known address identifiers for generic services */
-#define ZFCP_DID_WKA 0xFFFFF0
-
/* remote port status */
#define ZFCP_STATUS_PORT_PHYS_OPEN 0x00000001
#define ZFCP_STATUS_PORT_LINK_TEST 0x00000002
-/* well known address (WKA) port status*/
-enum zfcp_wka_status {
- ZFCP_WKA_PORT_OFFLINE,
- ZFCP_WKA_PORT_CLOSING,
- ZFCP_WKA_PORT_OPENING,
- ZFCP_WKA_PORT_ONLINE,
-};
-
/* logical unit status */
#define ZFCP_STATUS_UNIT_SHARED 0x00000004
#define ZFCP_STATUS_UNIT_READONLY 0x00000008
@@ -247,10 +110,7 @@ enum zfcp_wka_status {
#define ZFCP_STATUS_FSFREQ_CLEANUP 0x00000010
#define ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED 0x00000040
#define ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED 0x00000080
-#define ZFCP_STATUS_FSFREQ_ABORTED 0x00000100
#define ZFCP_STATUS_FSFREQ_TMFUNCFAILED 0x00000200
-#define ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP 0x00000400
-#define ZFCP_STATUS_FSFREQ_RETRY 0x00000800
#define ZFCP_STATUS_FSFREQ_DISMISSED 0x00001000
/************************* STRUCTURE DEFINITIONS *****************************/
@@ -265,125 +125,10 @@ struct zfcp_adapter_mempool {
mempool_t *scsi_abort;
mempool_t *status_read_req;
mempool_t *status_read_data;
- mempool_t *gid_pn_data;
+ mempool_t *gid_pn;
mempool_t *qtcb_pool;
};
-/*
- * header for CT_IU
- */
-struct ct_hdr {
- u8 revision; // 0x01
- u8 in_id[3]; // 0x00
- u8 gs_type; // 0xFC Directory Service
- u8 gs_subtype; // 0x02 Name Server
- u8 options; // 0x00 single bidirectional exchange
- u8 reserved0;
- u16 cmd_rsp_code; // 0x0121 GID_PN, or 0x0100 GA_NXT
- u16 max_res_size; // <= (4096 - 16) / 4
- u8 reserved1;
- u8 reason_code;
- u8 reason_code_expl;
- u8 vendor_unique;
-} __attribute__ ((packed));
-
-/* nameserver request CT_IU -- for requests where
- * a port name is required */
-struct ct_iu_gid_pn_req {
- struct ct_hdr header;
- u64 wwpn;
-} __attribute__ ((packed));
-
-/* FS_ACC IU and data unit for GID_PN nameserver request */
-struct ct_iu_gid_pn_resp {
- struct ct_hdr header;
- u32 d_id;
-} __attribute__ ((packed));
-
-struct ct_iu_gpn_ft_req {
- struct ct_hdr header;
- u8 flags;
- u8 domain_id_scope;
- u8 area_id_scope;
- u8 fc4_type;
-} __attribute__ ((packed));
-
-
-/**
- * struct zfcp_send_ct - used to pass parameters to function zfcp_fsf_send_ct
- * @wka_port: port where the request is sent to
- * @req: scatter-gather list for request
- * @resp: scatter-gather list for response
- * @handler: handler function (called for response to the request)
- * @handler_data: data passed to handler function
- * @completion: completion for synchronization purposes
- * @status: used to pass error status to calling function
- */
-struct zfcp_send_ct {
- struct zfcp_wka_port *wka_port;
- struct scatterlist *req;
- struct scatterlist *resp;
- void (*handler)(unsigned long);
- unsigned long handler_data;
- struct completion *completion;
- int status;
-};
-
-/* used for name server requests in error recovery */
-struct zfcp_gid_pn_data {
- struct zfcp_send_ct ct;
- struct scatterlist req;
- struct scatterlist resp;
- struct ct_iu_gid_pn_req ct_iu_req;
- struct ct_iu_gid_pn_resp ct_iu_resp;
- struct zfcp_port *port;
-};
-
-/**
- * struct zfcp_send_els - used to pass parameters to function zfcp_fsf_send_els
- * @adapter: adapter where request is sent from
- * @port: port where ELS is destinated (port reference count has to be increased)
- * @d_id: destiniation id of port where request is sent to
- * @req: scatter-gather list for request
- * @resp: scatter-gather list for response
- * @handler: handler function (called for response to the request)
- * @handler_data: data passed to handler function
- * @completion: completion for synchronization purposes
- * @ls_code: hex code of ELS command
- * @status: used to pass error status to calling function
- */
-struct zfcp_send_els {
- struct zfcp_adapter *adapter;
- struct zfcp_port *port;
- u32 d_id;
- struct scatterlist *req;
- struct scatterlist *resp;
- void (*handler)(unsigned long);
- unsigned long handler_data;
- struct completion *completion;
- int ls_code;
- int status;
-};
-
-struct zfcp_wka_port {
- struct zfcp_adapter *adapter;
- wait_queue_head_t completion_wq;
- enum zfcp_wka_status status;
- atomic_t refcount;
- u32 d_id;
- u32 handle;
- struct mutex mutex;
- struct delayed_work work;
-};
-
-struct zfcp_wka_ports {
- struct zfcp_wka_port ms; /* management service */
- struct zfcp_wka_port ts; /* time service */
- struct zfcp_wka_port ds; /* directory service */
- struct zfcp_wka_port as; /* alias service */
- struct zfcp_wka_port ks; /* key distribution service */
-};
-
struct zfcp_qdio_queue {
struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q];
u8 first; /* index of next free bfr in queue */
@@ -446,9 +191,7 @@ struct zfcp_qdio {
};
struct zfcp_adapter {
- atomic_t refcount; /* reference count */
- wait_queue_head_t remove_wq; /* can be used to wait for
- refcount drop to zero */
+ struct kref ref;
u64 peer_wwnn; /* P2P peer WWNN */
u64 peer_wwpn; /* P2P peer WWPN */
u32 peer_d_id; /* P2P peer D_ID */
@@ -461,7 +204,8 @@ struct zfcp_adapter {
u32 hardware_version; /* of FCP channel */
u16 timer_ticks; /* time int for a tick */
struct Scsi_Host *scsi_host; /* Pointer to mid-layer */
- struct list_head port_list_head; /* remote port list */
+ struct list_head port_list; /* remote port list */
+ rwlock_t port_list_lock; /* port list lock */
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 */
@@ -485,7 +229,7 @@ struct zfcp_adapter {
u32 erp_low_mem_count; /* nr of erp actions waiting
for memory */
struct task_struct *erp_thread;
- struct zfcp_wka_ports *gs; /* generic services */
+ struct zfcp_fc_wka_ports *gs; /* generic services */
struct zfcp_dbf *dbf; /* debug traces */
struct zfcp_adapter_mempool pool; /* Adapter memory pools */
struct fc_host_statistics *fc_stats;
@@ -500,11 +244,9 @@ struct zfcp_port {
struct device sysfs_device; /* sysfs device */
struct fc_rport *rport; /* rport of fc transport class */
struct list_head list; /* list of remote ports */
- atomic_t refcount; /* reference count */
- wait_queue_head_t remove_wq; /* can be used to wait for
- refcount drop to zero */
struct zfcp_adapter *adapter; /* adapter used to access port */
- struct list_head unit_list_head; /* head of logical unit list */
+ struct list_head unit_list; /* head of logical unit list */
+ rwlock_t unit_list_lock; /* unit list lock */
atomic_t status; /* status of this remote port */
u64 wwnn; /* WWNN if known */
u64 wwpn; /* WWPN */
@@ -523,9 +265,6 @@ struct zfcp_port {
struct zfcp_unit {
struct device sysfs_device; /* sysfs device */
struct list_head list; /* list of logical units */
- atomic_t refcount; /* reference count */
- wait_queue_head_t remove_wq; /* can be used to wait for
- refcount drop to zero */
struct zfcp_port *port; /* remote port of unit */
atomic_t status; /* status of this logical unit */
u64 fcp_lun; /* own FCP_LUN */
@@ -601,14 +340,11 @@ struct zfcp_fsf_req {
struct zfcp_data {
struct scsi_host_template scsi_host_template;
struct scsi_transport_template *scsi_transport_template;
- rwlock_t config_lock; /* serialises changes
- to adapter/port/unit
- lists */
- struct mutex config_mutex;
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 ********************************/
@@ -657,47 +393,4 @@ zfcp_reqlist_find_safe(struct zfcp_adapter *adapter, struct zfcp_fsf_req *req)
return NULL;
}
-/*
- * functions needed for reference/usage counting
- */
-
-static inline void
-zfcp_unit_get(struct zfcp_unit *unit)
-{
- atomic_inc(&unit->refcount);
-}
-
-static inline void
-zfcp_unit_put(struct zfcp_unit *unit)
-{
- if (atomic_dec_return(&unit->refcount) == 0)
- wake_up(&unit->remove_wq);
-}
-
-static inline void
-zfcp_port_get(struct zfcp_port *port)
-{
- atomic_inc(&port->refcount);
-}
-
-static inline void
-zfcp_port_put(struct zfcp_port *port)
-{
- if (atomic_dec_return(&port->refcount) == 0)
- wake_up(&port->remove_wq);
-}
-
-static inline void
-zfcp_adapter_get(struct zfcp_adapter *adapter)
-{
- atomic_inc(&adapter->refcount);
-}
-
-static inline void
-zfcp_adapter_put(struct zfcp_adapter *adapter)
-{
- if (atomic_dec_return(&adapter->refcount) == 0)
- wake_up(&adapter->remove_wq);
-}
-
#endif /* ZFCP_DEF_H */