Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 442 insertions, 0 deletions

diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h
new file mode 100644
index 00000000000..70ad16315a1
--- /dev/null
+++ b/include/scsi/scsi_transport_fc.h
@@ -0,0 +1,442 @@
+/* 
+ *  FiberChannel transport specific attributes exported to sysfs.
+ *
+ *  Copyright (c) 2003 Silicon Graphics, Inc.  All rights reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  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 <linux/config.h>
+
+struct scsi_transport_template;
+
+
+/*
+ * FC Port definitions - Following FC HBAAPI guidelines
+ *
+ * Note: Not all binary values for the different fields match HBAAPI.
+ *  Instead, we use densely packed ordinal values or enums.
+ *  We get away with this as we never present the actual binary values
+ *  externally. For sysfs, we always present the string that describes
+ *  the value. Thus, an admin doesn't need a magic HBAAPI decoder ring
+ *  to understand the values. The HBAAPI user-space library is free to
+ *  convert the strings into the HBAAPI-specified binary values.
+ *
+ * Note: Not all HBAAPI-defined values are contained in the definitions
+ *  below. Those not appropriate to an fc_host (e.g. FCP initiator) have
+ *  been removed.
+ */
+
+/*
+ * fc_port_type: If you alter this, you also need to alter scsi_transport_fc.c
+ * (for the ascii descriptions).
+ */
+enum fc_port_type {
+	FC_PORTTYPE_UNKNOWN,
+	FC_PORTTYPE_OTHER,
+	FC_PORTTYPE_NOTPRESENT,
+	FC_PORTTYPE_NPORT,		/* Attached to FPort */
+	FC_PORTTYPE_NLPORT,		/* (Public) Loop w/ FLPort */
+	FC_PORTTYPE_LPORT,		/* (Private) Loop w/o FLPort */
+	FC_PORTTYPE_PTP,		/* Point to Point w/ another NPort */
+};
+
+/*
+ * fc_port_state: If you alter this, you also need to alter scsi_transport_fc.c
+ * (for the ascii descriptions).
+ */
+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 Classes of Service
+ * Note: values are not enumerated, as they can be "or'd" together
+ * for reporting (e.g. report supported_classes). If you alter this list,
+ * you also need to alter scsi_transport_fc.c (for the ascii descriptions).
+ */
+#define FC_COS_UNSPECIFIED		0
+#define FC_COS_CLASS1			2
+#define FC_COS_CLASS2			4
+#define FC_COS_CLASS3			8
+#define FC_COS_CLASS4			0x10
+#define FC_COS_CLASS6			0x40
+
+/* 
+ * FC Port Speeds
+ * Note: values are not enumerated, as they can be "or'd" together
+ * for reporting (e.g. report supported_speeds). If you alter this list,
+ * you also need to alter scsi_transport_fc.c (for the ascii descriptions).
+ */
+#define FC_PORTSPEED_UNKNOWN		0 /* Unknown - transceiver
+					     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_NOT_NEGOTIATED	(1 << 15) /* Speed not established */
+
+/*
+ * fc_tgtid_binding_type: If you alter this, you also need to alter
+ * 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;
+
+	/* exported data */
+	void *dd_data;			/* Used for driver-specific storage */
+
+	/* internal data */
+	unsigned int channel;
+	u32 number;
+	struct list_head peers;
+	struct device dev;
+ 	struct work_struct dev_loss_work;
+ 	struct work_struct scan_work;
+} __attribute__((aligned(sizeof(unsigned long))));
+
+#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 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 */
+	/* Dynamic Attributes */
+	u64 node_name;
+	u64 port_name;
+	u32 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_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
+
+
+/*
+ * FC Local Port (Host) Statistics
+ */
+
+/* FC Statistics - Following FC HBAAPI v2.0 guidelines */
+struct fc_host_statistics {
+	/* port statistics */
+	u64 seconds_since_last_reset;
+	u64 tx_frames;
+	u64 tx_words;
+	u64 rx_frames;
+	u64 rx_words;
+	u64 lip_count;
+	u64 nos_count;
+	u64 error_frames;
+	u64 dumped_frames;
+	u64 link_failure_count;
+	u64 loss_of_sync_count;
+	u64 loss_of_signal_count;
+	u64 prim_seq_protocol_err_count;
+	u64 invalid_tx_word_count;
+	u64 invalid_crc_count;
+	
+	/* fc4 statistics  (only FCP supported currently) */
+	u64 fcp_input_requests;
+	u64 fcp_output_requests;
+	u64 fcp_control_requests;
+	u64 fcp_input_megabytes;
+	u64 fcp_output_megabytes;
+};
+
+
+/*
+ * FC Local Port (Host) Attributes
+ *
+ * Attributes are based on HBAAPI V2.0 definitions.
+ * Note: OSDeviceName is determined by user-space library
+ *
+ * Fixed attributes are not expected to change. The driver is
+ * expected to set these values after successfully calling scsi_add_host().
+ * 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.
+ */
+
+#define FC_FC4_LIST_SIZE		32
+#define FC_SYMBOLIC_NAME_SIZE		256
+#define FC_VERSION_STRING_SIZE		64
+#define FC_SERIAL_NUMBER_SIZE		80
+
+struct fc_host_attrs {
+	/* Fixed Attributes */
+	u64 node_name;
+	u64 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 serial_number[FC_SERIAL_NUMBER_SIZE];
+
+	/* Dynamic Attributes */
+	u32 port_id;
+	enum fc_port_type port_type;
+	enum fc_port_state port_state;
+	u8  active_fc4s[FC_FC4_LIST_SIZE];
+	u32 speed;
+	u64 fabric_name;
+
+	/* Private (Transport-managed) Attributes */
+	enum fc_tgtid_binding_type  tgtid_bind_type;
+
+	/* internal data */
+	struct list_head rports;
+	struct list_head rport_bindings;
+	u32 next_rport_number;
+	u32 next_target_id;
+};
+
+#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_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_serial_number(x)	\
+	(((struct fc_host_attrs *)(x)->shost_data)->serial_number)
+#define fc_host_port_id(x)	\
+	(((struct fc_host_attrs *)(x)->shost_data)->port_id)
+#define fc_host_port_type(x)	\
+	(((struct fc_host_attrs *)(x)->shost_data)->port_type)
+#define fc_host_port_state(x)	\
+	(((struct fc_host_attrs *)(x)->shost_data)->port_state)
+#define fc_host_active_fc4s(x)	\
+	(((struct fc_host_attrs *)(x)->shost_data)->active_fc4s)
+#define fc_host_speed(x)	\
+	(((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_tgtid_bind_type(x) \
+	(((struct fc_host_attrs *)(x)->shost_data)->tgtid_bind_type)
+#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)
+
+
+/* The functions by which the transport class and the driver communicate */
+struct fc_function_template {
+	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_port_id)(struct scsi_target *);
+
+	void 	(*get_host_port_id)(struct Scsi_Host *);
+	void	(*get_host_port_type)(struct Scsi_Host *);
+	void	(*get_host_port_state)(struct Scsi_Host *);
+	void	(*get_host_active_fc4s)(struct Scsi_Host *);
+	void	(*get_host_speed)(struct Scsi_Host *);
+	void	(*get_host_fabric_name)(struct Scsi_Host *);
+
+	struct fc_host_statistics * (*get_fc_host_stats)(struct Scsi_Host *);
+	void	(*reset_fc_host_stats)(struct Scsi_Host *);
+
+	/* 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 
+	 */
+
+	/* 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_port_id:1;
+
+	/* host fixed attributes */
+	unsigned long	show_host_node_name:1;
+	unsigned long	show_host_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_serial_number:1;
+	/* host dynamic attributes */
+	unsigned long	show_host_port_id:1;
+	unsigned long	show_host_port_type:1;
+	unsigned long	show_host_port_state:1;
+	unsigned long	show_host_active_fc4s:1;
+	unsigned long	show_host_speed:1;
+	unsigned long	show_host_fabric_name:1;
+};
+
+
+struct scsi_transport_template *fc_attach_transport(
+			struct fc_function_template *);
+void fc_release_transport(struct scsi_transport_template *);
+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 fc_remote_port_block(struct fc_rport *rport);
+void fc_remote_port_unblock(struct fc_rport *rport);
+int scsi_is_fc_rport(const struct device *);
+
+#endif /* SCSI_TRANSPORT_FC_H */