lpfc: add Emulex FC driver version 8.0.28

From: 	James.Smart@Emulex.Com

Modified for kernel import and
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 206 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/lpfc_disc.h b/drivers/scsi/lpfc/lpfc_disc.h
new file mode 100644
index 000000000000..adccc99510d5
--- /dev/null
+++ b/drivers/scsi/lpfc/lpfc_disc.h
@@ -0,0 +1,206 @@
+/*******************************************************************
+ * This file is part of the Emulex Linux Device Driver for         *
+ * Enterprise Fibre Channel Host Bus Adapters.                     *
+ * Refer to the README file included with this package for         *
+ * driver version and adapter support.                             *
+ * Copyright (C) 2004 Emulex Corporation.                          *
+ * www.emulex.com                                                  *
+ *                                                                 *
+ * 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, a copy of which    *
+ * can be found in the file COPYING included with this package.    *
+ *******************************************************************/
+
+/*
+ * $Id: lpfc_disc.h 1.61 2005/04/07 08:46:52EDT sf_support Exp  $
+ */
+
+#define FC_MAX_HOLD_RSCN     32       /* max number of deferred RSCNs */
+#define FC_MAX_NS_RSP        65536    /* max size NameServer rsp */
+#define FC_MAXLOOP           126      /* max devices supported on a fc loop */
+#define LPFC_DISC_FLOGI_TMO  10       /* Discovery FLOGI ratov */
+
+
+/* This is the protocol dependent definition for a Node List Entry.
+ * This is used by Fibre Channel protocol to support FCP.
+ */
+
+/* structure used to queue event to the discovery tasklet */
+struct lpfc_work_evt {
+        struct list_head      evt_listp;
+        void                * evt_arg1;
+        void                * evt_arg2;
+        uint32_t              evt;
+};
+
+#define LPFC_EVT_NODEV_TMO      0x1
+#define LPFC_EVT_ONLINE         0x2
+#define LPFC_EVT_OFFLINE        0x3
+#define LPFC_EVT_ELS_RETRY      0x4
+
+struct lpfc_nodelist {
+        struct list_head nlp_listp;
+        struct lpfc_name nlp_portname;          /* port name */
+        struct lpfc_name nlp_nodename;          /* node name */
+        uint32_t         nlp_flag;              /* entry  flags */
+        uint32_t         nlp_DID;               /* FC D_ID of entry */
+        uint32_t         nlp_last_elscmd;       /* Last ELS cmd sent */
+        uint16_t         nlp_type;
+#define NLP_FC_NODE        0x1                  /* entry is an FC node */
+#define NLP_FABRIC         0x4                  /* entry rep a Fabric entity */
+#define NLP_FCP_TARGET     0x8                  /* entry is an FCP target */
+#define NLP_FCP_INITIATOR  0x10                 /* entry is an FCP Initiator */
+
+        uint16_t        nlp_rpi;
+        uint16_t        nlp_state;              /* state transition indicator */
+        uint16_t        nlp_xri;                /* output exchange id for RPI */
+        uint16_t        nlp_sid;                /* scsi id */
+#define NLP_NO_SID              0xffff
+        uint16_t        nlp_maxframe;           /* Max RCV frame size */
+        uint8_t         nlp_class_sup;          /* Supported Classes */
+        uint8_t         nlp_retry;              /* used for ELS retries */
+        uint8_t         nlp_disc_refcnt;        /* used for DSM */
+        uint8_t         nlp_fcp_info;           /* class info, bits 0-3 */
+#define NLP_FCP_2_DEVICE   0x10                 /* FCP-2 device */
+
+        struct timer_list   nlp_delayfunc;      /* Used for delayed ELS cmds */
+        struct timer_list   nlp_tmofunc;        /* Used for nodev tmo */
+        struct fc_rport *rport;                 /* Corresponding FC transport
+                                                   port structure */
+        struct lpfc_nodelist *nlp_rpi_hash_next;
+        struct lpfc_hba      *nlp_phba;
+        struct lpfc_work_evt nodev_timeout_evt;
+        struct lpfc_work_evt els_retry_evt;
+};
+
+/* Defines for nlp_flag (uint32) */
+#define NLP_NO_LIST        0x0          /* Indicates immediately free node */
+#define NLP_UNUSED_LIST    0x1          /* Flg to indicate node will be freed */
+#define NLP_PLOGI_LIST     0x2          /* Flg to indicate sent PLOGI */
+#define NLP_ADISC_LIST     0x3          /* Flg to indicate sent ADISC */
+#define NLP_REGLOGIN_LIST  0x4          /* Flg to indicate sent REG_LOGIN */
+#define NLP_PRLI_LIST      0x5          /* Flg to indicate sent PRLI */
+#define NLP_UNMAPPED_LIST  0x6          /* Node is now unmapped */
+#define NLP_MAPPED_LIST    0x7          /* Node is now mapped */
+#define NLP_NPR_LIST       0x8          /* Node is in NPort Recovery state */
+#define NLP_JUST_DQ        0x9          /* just deque ndlp in lpfc_nlp_list */
+#define NLP_LIST_MASK      0xf          /* mask to see what list node is on */
+#define NLP_PLOGI_SND      0x20         /* sent PLOGI request for this entry */
+#define NLP_PRLI_SND       0x40         /* sent PRLI request for this entry */
+#define NLP_ADISC_SND      0x80         /* sent ADISC request for this entry */
+#define NLP_LOGO_SND       0x100        /* sent LOGO request for this entry */
+#define NLP_RNID_SND       0x400        /* sent RNID request for this entry */
+#define NLP_ELS_SND_MASK   0x7e0        /* sent ELS request for this entry */
+#define NLP_NODEV_TMO      0x10000      /* nodev timeout is running for node */
+#define NLP_DELAY_TMO      0x20000      /* delay timeout is running for node */
+#define NLP_NPR_2B_DISC    0x40000      /* node is included in num_disc_nodes */
+#define NLP_RCV_PLOGI      0x80000      /* Rcv'ed PLOGI from remote system */
+#define NLP_LOGO_ACC       0x100000     /* Process LOGO after ACC completes */
+#define NLP_TGT_NO_SCSIID  0x200000     /* good PRLI but no binding for scsid */
+#define NLP_ACC_REGLOGIN   0x1000000    /* Issue Reg Login after successful
+                                           ACC */
+#define NLP_NPR_ADISC      0x2000000    /* Issue ADISC when dq'ed from
+                                           NPR list */
+#define NLP_DELAY_REMOVE   0x4000000    /* Defer removal till end of DSM */
+
+/* Defines for list searchs */
+#define NLP_SEARCH_MAPPED    0x1        /* search mapped */
+#define NLP_SEARCH_UNMAPPED  0x2        /* search unmapped */
+#define NLP_SEARCH_PLOGI     0x4        /* search plogi */
+#define NLP_SEARCH_ADISC     0x8        /* search adisc */
+#define NLP_SEARCH_REGLOGIN  0x10       /* search reglogin */
+#define NLP_SEARCH_PRLI      0x20       /* search prli */
+#define NLP_SEARCH_NPR       0x40       /* search npr */
+#define NLP_SEARCH_UNUSED    0x80       /* search mapped */
+#define NLP_SEARCH_ALL       0xff       /* search all lists */
+
+/* There are 4 different double linked lists nodelist entries can reside on.
+ * The Port Login (PLOGI) list and Address Discovery (ADISC) list are used
+ * when Link Up discovery or Registered State Change Notification (RSCN)
+ * processing is needed.  Each list holds the nodes that require a PLOGI or
+ * ADISC Extended Link Service (ELS) request.  These lists keep track of the
+ * nodes affected by an RSCN, or a Link Up (Typically, all nodes are effected
+ * by Link Up) event.  The unmapped_list contains all nodes that have
+ * successfully logged into at the Fibre Channel level.  The
+ * mapped_list will contain all nodes that are mapped FCP targets.
+ *
+ * The bind list is a list of undiscovered (potentially non-existent) nodes
+ * that we have saved binding information on. This information is used when
+ * nodes transition from the unmapped to the mapped list.
+ */
+
+/* Defines for nlp_state */
+#define NLP_STE_UNUSED_NODE       0x0   /* node is just allocated */
+#define NLP_STE_PLOGI_ISSUE       0x1   /* PLOGI was sent to NL_PORT */
+#define NLP_STE_ADISC_ISSUE       0x2   /* ADISC was sent to NL_PORT */
+#define NLP_STE_REG_LOGIN_ISSUE   0x3   /* REG_LOGIN was issued for NL_PORT */
+#define NLP_STE_PRLI_ISSUE        0x4   /* PRLI was sent to NL_PORT */
+#define NLP_STE_UNMAPPED_NODE     0x5   /* PRLI completed from NL_PORT */
+#define NLP_STE_MAPPED_NODE       0x6   /* Identified as a FCP Target */
+#define NLP_STE_NPR_NODE          0x7   /* NPort disappeared */
+#define NLP_STE_MAX_STATE         0x8
+#define NLP_STE_FREED_NODE        0xff  /* node entry was freed to MEM_NLP */
+
+/* For UNUSED_NODE state, the node has just been allocated.
+ * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
+ * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
+ * and put on the unmapped list. For ADISC processing, the node is taken off
+ * the ADISC list and placed on either the mapped or unmapped list (depending
+ * on its previous state). Once on the unmapped list, a PRLI is issued and the
+ * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
+ * changed to PRLI_COMPL. If the completion indicates a mapped
+ * node, the node is taken off the unmapped list. The binding list is checked
+ * for a valid binding, or a binding is automatically assigned. If binding
+ * assignment is unsuccessful, the node is left on the unmapped list. If
+ * binding assignment is successful, the associated binding list entry (if
+ * any) is removed, and the node is placed on the mapped list.
+ */
+/*
+ * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
+ * lists will receive a DEVICE_RECOVERY event. If the linkdown or nodev timers
+ * expire, all effected nodes will receive a DEVICE_RM event.
+ */
+/*
+ * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
+ * to either the ADISC or PLOGI list.  After a Nameserver query or ALPA loopmap
+ * check, additional nodes may be added (DEVICE_ADD) or removed (DEVICE_RM) to /
+ * from the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
+ * we will first process the ADISC list.  32 entries are processed initially and
+ * ADISC is initited for each one.  Completions / Events for each node are
+ * funnelled thru the state machine.  As each node finishes ADISC processing, it
+ * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
+ * waiting, and the ADISC list count is identically 0, then we are done. For
+ * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
+ * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
+ * list.  32 entries are processed initially and PLOGI is initited for each one.
+ * Completions / Events for each node are funnelled thru the state machine.  As
+ * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
+ * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
+ * identically 0, then we are done. We have now completed discovery / RSCN
+ * handling. Upon completion, ALL nodes should be on either the mapped or
+ * unmapped lists.
+ */
+
+/* Defines for Node List Entry Events that could happen */
+#define NLP_EVT_RCV_PLOGI         0x0   /* Rcv'd an ELS PLOGI command */
+#define NLP_EVT_RCV_PRLI          0x1   /* Rcv'd an ELS PRLI  command */
+#define NLP_EVT_RCV_LOGO          0x2   /* Rcv'd an ELS LOGO  command */
+#define NLP_EVT_RCV_ADISC         0x3   /* Rcv'd an ELS ADISC command */
+#define NLP_EVT_RCV_PDISC         0x4   /* Rcv'd an ELS PDISC command */
+#define NLP_EVT_RCV_PRLO          0x5   /* Rcv'd an ELS PRLO  command */
+#define NLP_EVT_CMPL_PLOGI        0x6   /* Sent an ELS PLOGI command */
+#define NLP_EVT_CMPL_PRLI         0x7   /* Sent an ELS PRLI  command */
+#define NLP_EVT_CMPL_LOGO         0x8   /* Sent an ELS LOGO  command */
+#define NLP_EVT_CMPL_ADISC        0x9   /* Sent an ELS ADISC command */
+#define NLP_EVT_CMPL_REG_LOGIN    0xa   /* REG_LOGIN mbox cmd completed */
+#define NLP_EVT_DEVICE_RM         0xb   /* Device not found in NS / ALPAmap */
+#define NLP_EVT_DEVICE_RECOVERY   0xc   /* Device existence unknown */
+#define NLP_EVT_MAX_EVENT         0xd
+