X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fscsi%2Fscsi_transport_fc.h;h=798f7c7ee426d72033321d55af20594a53c865fc;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=1d4adfd6d3e9a042db68cbd210ccbf1dd4b469fc;hpb=6a77f38946aaee1cd85eeec6cf4229b204c15071;p=linux-2.6.git diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h index 1d4adfd6d..798f7c7ee 100644 --- a/include/scsi/scsi_transport_fc.h +++ b/include/scsi/scsi_transport_fc.h @@ -16,11 +16,20 @@ * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * ======== + * + * Copyright (C) 2004-2005 James Smart, Emulex Corporation + * Rewrite for host, target, device, and remote port attributes, + * statistics, and service functions... + * */ #ifndef SCSI_TRANSPORT_FC_H #define SCSI_TRANSPORT_FC_H -#include +#include +#include +#include struct scsi_transport_template; @@ -61,13 +70,16 @@ enum fc_port_type { */ enum fc_port_state { FC_PORTSTATE_UNKNOWN, + FC_PORTSTATE_NOTPRESENT, FC_PORTSTATE_ONLINE, FC_PORTSTATE_OFFLINE, /* User has taken Port Offline */ + FC_PORTSTATE_BLOCKED, FC_PORTSTATE_BYPASSED, FC_PORTSTATE_DIAGNOSTICS, FC_PORTSTATE_LINKDOWN, FC_PORTSTATE_ERROR, FC_PORTSTATE_LOOPBACK, + FC_PORTSTATE_DELETED, }; @@ -94,8 +106,8 @@ enum fc_port_state { incapable of reporting */ #define FC_PORTSPEED_1GBIT 1 #define FC_PORTSPEED_2GBIT 2 -#define FC_PORTSPEED_10GBIT 4 -#define FC_PORTSPEED_4GBIT 8 +#define FC_PORTSPEED_4GBIT 4 +#define FC_PORTSPEED_10GBIT 8 #define FC_PORTSPEED_NOT_NEGOTIATED (1 << 15) /* Speed not established */ /* @@ -103,35 +115,143 @@ enum fc_port_state { * scsi_transport_fc.c (for the ascii descriptions). */ enum fc_tgtid_binding_type { + FC_TGTID_BIND_NONE, FC_TGTID_BIND_BY_WWPN, FC_TGTID_BIND_BY_WWNN, FC_TGTID_BIND_BY_ID, }; +/* + * FC Remote Port Roles + * Note: values are not enumerated, as they can be "or'd" together + * for reporting (e.g. report roles). If you alter this list, + * you also need to alter scsi_transport_fc.c (for the ascii descriptions). + */ +#define FC_RPORT_ROLE_UNKNOWN 0x00 +#define FC_RPORT_ROLE_FCP_TARGET 0x01 +#define FC_RPORT_ROLE_FCP_INITIATOR 0x02 +#define FC_RPORT_ROLE_IP_PORT 0x04 + + +/* + * fc_rport_identifiers: This set of data contains all elements + * to uniquely identify a remote FC port. The driver uses this data + * to report the existence of a remote FC port in the topology. Internally, + * the transport uses this data for attributes and to manage consistent + * target id bindings. + */ +struct fc_rport_identifiers { + u64 node_name; + u64 port_name; + u32 port_id; + u32 roles; +}; + +/* Macro for use in defining Remote Port attributes */ +#define FC_RPORT_ATTR(_name,_mode,_show,_store) \ +struct class_device_attribute class_device_attr_rport_##_name = \ + __ATTR(_name,_mode,_show,_store) + + +/* + * FC Remote Port Attributes + * + * This structure exists for each remote FC port that a LLDD notifies + * the subsystem of. A remote FC port may or may not be a SCSI Target, + * also be a SCSI initiator, IP endpoint, etc. As such, the remote + * port is considered a separate entity, independent of "role" (such + * as scsi target). + * + * -- + * + * Attributes are based on HBAAPI V2.0 definitions. Only those + * attributes that are determinable by the local port (aka Host) + * are contained. + * + * Fixed attributes are not expected to change. The driver is + * expected to set these values after successfully calling + * fc_remote_port_add(). The transport fully manages all get functions + * w/o driver interaction. + * + * Dynamic attributes are expected to change. The driver participates + * in all get/set operations via functions provided by the driver. + * + * Private attributes are transport-managed values. They are fully + * managed by the transport w/o driver interaction. + */ + +struct fc_rport { /* aka fc_starget_attrs */ + /* Fixed Attributes */ + u32 maxframe_size; + u32 supported_classes; + + /* Dynamic Attributes */ + u32 dev_loss_tmo; /* Remote Port loss timeout in seconds. */ + + /* Private (Transport-managed) Attributes */ + u64 node_name; + u64 port_name; + u32 port_id; + u32 roles; + enum fc_port_state port_state; /* Will only be ONLINE or UNKNOWN */ + u32 scsi_target_id; + u32 fast_io_fail_tmo; + + /* exported data */ + void *dd_data; /* Used for driver-specific storage */ + /* internal data */ + unsigned int channel; + u32 number; + u8 flags; + struct list_head peers; + struct device dev; + struct delayed_work dev_loss_work; + struct work_struct scan_work; + struct delayed_work fail_io_work; + struct work_struct stgt_delete_work; + struct work_struct rport_delete_work; +} __attribute__((aligned(sizeof(unsigned long)))); + +/* bit field values for struct fc_rport "flags" field: */ +#define FC_RPORT_DEVLOSS_PENDING 0x01 +#define FC_RPORT_SCAN_PENDING 0x02 + +#define dev_to_rport(d) \ + container_of(d, struct fc_rport, dev) +#define transport_class_to_rport(classdev) \ + dev_to_rport(classdev->dev) +#define rport_to_shost(r) \ + dev_to_shost(r->dev.parent) /* - * FC Remote Port (Target) Attributes + * FC SCSI Target Attributes + * + * The SCSI Target is considered an extention of a remote port (as + * a remote port can be more than a SCSI Target). Within the scsi + * subsystem, we leave the Target as a separate entity. Doing so + * provides backward compatibility with prior FC transport api's, + * and lets remote ports be handled entirely within the FC transport + * and independently from the scsi subsystem. The drawback is that + * some data will be duplicated. */ struct fc_starget_attrs { /* aka fc_target_attrs */ - int port_id; + /* Dynamic Attributes */ u64 node_name; u64 port_name; - u32 dev_loss_tmo; /* Remote Port loss timeout in seconds. */ - struct work_struct dev_loss_work; + u32 port_id; }; -#define fc_starget_port_id(x) \ - (((struct fc_starget_attrs *)&(x)->starget_data)->port_id) #define fc_starget_node_name(x) \ (((struct fc_starget_attrs *)&(x)->starget_data)->node_name) #define fc_starget_port_name(x) \ (((struct fc_starget_attrs *)&(x)->starget_data)->port_name) -#define fc_starget_dev_loss_tmo(x) \ - (((struct fc_starget_attrs *)&(x)->starget_data)->dev_loss_tmo) -#define fc_starget_dev_loss_work(x) \ - (((struct fc_starget_attrs *)&(x)->starget_data)->dev_loss_work) +#define fc_starget_port_id(x) \ + (((struct fc_starget_attrs *)&(x)->starget_data)->port_id) + +#define starget_to_rport(s) \ + scsi_is_fc_rport(s->dev.parent) ? dev_to_rport(s->dev.parent) : NULL /* @@ -166,6 +286,30 @@ struct fc_host_statistics { }; +/* + * FC Event Codes - Polled and Async, following FC HBAAPI v2.0 guidelines + */ + +/* + * fc_host_event_code: If you alter this, you also need to alter + * scsi_transport_fc.c (for the ascii descriptions). + */ +enum fc_host_event_code { + FCH_EVT_LIP = 0x1, + FCH_EVT_LINKUP = 0x2, + FCH_EVT_LINKDOWN = 0x3, + FCH_EVT_LIPRESET = 0x4, + FCH_EVT_RSCN = 0x5, + FCH_EVT_ADAPTER_CHANGE = 0x103, + FCH_EVT_PORT_UNKNOWN = 0x200, + FCH_EVT_PORT_OFFLINE = 0x201, + FCH_EVT_PORT_ONLINE = 0x202, + FCH_EVT_PORT_FABRIC = 0x204, + FCH_EVT_LINK_UNKNOWN = 0x500, + FCH_EVT_VENDOR_UNIQUE = 0xffff, +}; + + /* * FC Local Port (Host) Attributes * @@ -192,16 +336,12 @@ struct fc_host_attrs { /* Fixed Attributes */ u64 node_name; u64 port_name; + u64 permanent_port_name; u32 supported_classes; u8 supported_fc4s[FC_FC4_LIST_SIZE]; - char symbolic_name[FC_SYMBOLIC_NAME_SIZE]; u32 supported_speeds; u32 maxframe_size; - char hardware_version[FC_VERSION_STRING_SIZE]; - char firmware_version[FC_VERSION_STRING_SIZE]; char serial_number[FC_SERIAL_NUMBER_SIZE]; - char opt_rom_version[FC_VERSION_STRING_SIZE]; - char driver_version[FC_VERSION_STRING_SIZE]; /* Dynamic Attributes */ u32 port_id; @@ -210,39 +350,44 @@ struct fc_host_attrs { u8 active_fc4s[FC_FC4_LIST_SIZE]; u32 speed; u64 fabric_name; - u32 link_down_tmo; /* Link Down timeout in seconds. */ + char symbolic_name[FC_SYMBOLIC_NAME_SIZE]; + char system_hostname[FC_SYMBOLIC_NAME_SIZE]; /* Private (Transport-managed) Attributes */ enum fc_tgtid_binding_type tgtid_bind_type; /* internal data */ - struct work_struct link_down_work; + struct list_head rports; + struct list_head rport_bindings; + u32 next_rport_number; + u32 next_target_id; + + /* work queues for rport state manipulation */ + char work_q_name[KOBJ_NAME_LEN]; + struct workqueue_struct *work_q; + char devloss_work_q_name[KOBJ_NAME_LEN]; + struct workqueue_struct *devloss_work_q; }; +#define shost_to_fc_host(x) \ + ((struct fc_host_attrs *)(x)->shost_data) + #define fc_host_node_name(x) \ (((struct fc_host_attrs *)(x)->shost_data)->node_name) #define fc_host_port_name(x) \ (((struct fc_host_attrs *)(x)->shost_data)->port_name) +#define fc_host_permanent_port_name(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->permanent_port_name) #define fc_host_supported_classes(x) \ (((struct fc_host_attrs *)(x)->shost_data)->supported_classes) #define fc_host_supported_fc4s(x) \ (((struct fc_host_attrs *)(x)->shost_data)->supported_fc4s) -#define fc_host_symbolic_name(x) \ - (((struct fc_host_attrs *)(x)->shost_data)->symbolic_name) #define fc_host_supported_speeds(x) \ (((struct fc_host_attrs *)(x)->shost_data)->supported_speeds) #define fc_host_maxframe_size(x) \ (((struct fc_host_attrs *)(x)->shost_data)->maxframe_size) -#define fc_host_hardware_version(x) \ - (((struct fc_host_attrs *)(x)->shost_data)->hardware_version) -#define fc_host_firmware_version(x) \ - (((struct fc_host_attrs *)(x)->shost_data)->firmware_version) #define fc_host_serial_number(x) \ (((struct fc_host_attrs *)(x)->shost_data)->serial_number) -#define fc_host_opt_rom_version(x) \ - (((struct fc_host_attrs *)(x)->shost_data)->opt_rom_version) -#define fc_host_driver_version(x) \ - (((struct fc_host_attrs *)(x)->shost_data)->driver_version) #define fc_host_port_id(x) \ (((struct fc_host_attrs *)(x)->shost_data)->port_id) #define fc_host_port_type(x) \ @@ -255,21 +400,38 @@ struct fc_host_attrs { (((struct fc_host_attrs *)(x)->shost_data)->speed) #define fc_host_fabric_name(x) \ (((struct fc_host_attrs *)(x)->shost_data)->fabric_name) -#define fc_host_link_down_tmo(x) \ - (((struct fc_host_attrs *)(x)->shost_data)->link_down_tmo) +#define fc_host_symbolic_name(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->symbolic_name) +#define fc_host_system_hostname(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->system_hostname) #define fc_host_tgtid_bind_type(x) \ (((struct fc_host_attrs *)(x)->shost_data)->tgtid_bind_type) -#define fc_host_link_down_work(x) \ - (((struct fc_host_attrs *)(x)->shost_data)->link_down_work) +#define fc_host_rports(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->rports) +#define fc_host_rport_bindings(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->rport_bindings) +#define fc_host_next_rport_number(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->next_rport_number) +#define fc_host_next_target_id(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->next_target_id) +#define fc_host_work_q_name(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->work_q_name) +#define fc_host_work_q(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->work_q) +#define fc_host_devloss_work_q_name(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q_name) +#define fc_host_devloss_work_q(x) \ + (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q) /* The functions by which the transport class and the driver communicate */ struct fc_function_template { - void (*get_starget_port_id)(struct scsi_target *); + void (*get_rport_dev_loss_tmo)(struct fc_rport *); + void (*set_rport_dev_loss_tmo)(struct fc_rport *, u32); + void (*get_starget_node_name)(struct scsi_target *); void (*get_starget_port_name)(struct scsi_target *); - void (*get_starget_dev_loss_tmo)(struct scsi_target *); - void (*set_starget_dev_loss_tmo)(struct scsi_target *, u32); + void (*get_starget_port_id)(struct scsi_target *); void (*get_host_port_id)(struct Scsi_Host *); void (*get_host_port_type)(struct Scsi_Host *); @@ -277,36 +439,50 @@ struct fc_function_template { void (*get_host_active_fc4s)(struct Scsi_Host *); void (*get_host_speed)(struct Scsi_Host *); void (*get_host_fabric_name)(struct Scsi_Host *); - void (*get_host_link_down_tmo)(struct Scsi_Host *); - void (*set_host_link_down_tmo)(struct Scsi_Host *, u32); + void (*get_host_symbolic_name)(struct Scsi_Host *); + void (*set_host_system_hostname)(struct Scsi_Host *); struct fc_host_statistics * (*get_fc_host_stats)(struct Scsi_Host *); void (*reset_fc_host_stats)(struct Scsi_Host *); + int (*issue_fc_host_lip)(struct Scsi_Host *); + + void (*dev_loss_tmo_callbk)(struct fc_rport *); + void (*terminate_rport_io)(struct fc_rport *); + + /* allocation lengths for host-specific data */ + u32 dd_fcrport_size; + /* * The driver sets these to tell the transport class it * wants the attributes displayed in sysfs. If the show_ flag * is not set, the attribute will be private to the transport * class */ - unsigned long show_starget_port_id:1; + + /* remote port fixed attributes */ + unsigned long show_rport_maxframe_size:1; + unsigned long show_rport_supported_classes:1; + unsigned long show_rport_dev_loss_tmo:1; + + /* + * target dynamic attributes + * These should all be "1" if the driver uses the remote port + * add/delete functions (so attributes reflect rport values). + */ unsigned long show_starget_node_name:1; unsigned long show_starget_port_name:1; - unsigned long show_starget_dev_loss_tmo:1; + unsigned long show_starget_port_id:1; /* host fixed attributes */ unsigned long show_host_node_name:1; unsigned long show_host_port_name:1; + unsigned long show_host_permanent_port_name:1; unsigned long show_host_supported_classes:1; unsigned long show_host_supported_fc4s:1; - unsigned long show_host_symbolic_name:1; unsigned long show_host_supported_speeds:1; unsigned long show_host_maxframe_size:1; - unsigned long show_host_hardware_version:1; - unsigned long show_host_firmware_version:1; unsigned long show_host_serial_number:1; - unsigned long show_host_opt_rom_version:1; - unsigned long show_host_driver_version:1; /* host dynamic attributes */ unsigned long show_host_port_id:1; unsigned long show_host_port_type:1; @@ -314,15 +490,80 @@ struct fc_function_template { unsigned long show_host_active_fc4s:1; unsigned long show_host_speed:1; unsigned long show_host_fabric_name:1; - unsigned long show_host_link_down_tmo:1; + unsigned long show_host_symbolic_name:1; + unsigned long show_host_system_hostname:1; }; -struct scsi_transport_template *fc_attach_transport(struct fc_function_template *); +/** + * fc_remote_port_chkready - called to validate the remote port state + * prior to initiating io to the port. + * + * Returns a scsi result code that can be returned by the LLDD. + * + * @rport: remote port to be checked + **/ +static inline int +fc_remote_port_chkready(struct fc_rport *rport) +{ + int result; + + switch (rport->port_state) { + case FC_PORTSTATE_ONLINE: + if (rport->roles & FC_RPORT_ROLE_FCP_TARGET) + result = 0; + else if (rport->flags & FC_RPORT_DEVLOSS_PENDING) + result = DID_IMM_RETRY << 16; + else + result = DID_NO_CONNECT << 16; + break; + case FC_PORTSTATE_BLOCKED: + result = DID_IMM_RETRY << 16; + break; + default: + result = DID_NO_CONNECT << 16; + break; + } + return result; +} + +static inline u64 wwn_to_u64(u8 *wwn) +{ + return (u64)wwn[0] << 56 | (u64)wwn[1] << 48 | + (u64)wwn[2] << 40 | (u64)wwn[3] << 32 | + (u64)wwn[4] << 24 | (u64)wwn[5] << 16 | + (u64)wwn[6] << 8 | (u64)wwn[7]; +} + +static inline void u64_to_wwn(u64 inm, u8 *wwn) +{ + wwn[0] = (inm >> 56) & 0xff; + wwn[1] = (inm >> 48) & 0xff; + wwn[2] = (inm >> 40) & 0xff; + wwn[3] = (inm >> 32) & 0xff; + wwn[4] = (inm >> 24) & 0xff; + wwn[5] = (inm >> 16) & 0xff; + wwn[6] = (inm >> 8) & 0xff; + wwn[7] = inm & 0xff; +} + +struct scsi_transport_template *fc_attach_transport( + struct fc_function_template *); void fc_release_transport(struct scsi_transport_template *); -int fc_target_block(struct scsi_target *starget); -void fc_target_unblock(struct scsi_target *starget); -int fc_host_block(struct Scsi_Host *shost); -void fc_host_unblock(struct Scsi_Host *shost); +void fc_remove_host(struct Scsi_Host *); +struct fc_rport *fc_remote_port_add(struct Scsi_Host *shost, + int channel, struct fc_rport_identifiers *ids); +void fc_remote_port_delete(struct fc_rport *rport); +void fc_remote_port_rolechg(struct fc_rport *rport, u32 roles); +int scsi_is_fc_rport(const struct device *); +u32 fc_get_event_number(void); +void fc_host_post_event(struct Scsi_Host *shost, u32 event_number, + enum fc_host_event_code event_code, u32 event_data); +void fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number, + u32 data_len, char * data_buf, u64 vendor_id); + /* Note: when specifying vendor_id to fc_host_post_vendor_event() + * be sure to read the Vendor Type and ID formatting requirements + * specified in scsi_netlink.h + */ #endif /* SCSI_TRANSPORT_FC_H */