217 lines
8.1 KiB
C
217 lines
8.1 KiB
C
/*******************************************************************
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* This file is part of the Emulex Linux Device Driver for *
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* Enterprise Fibre Channel Host Bus Adapters. *
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* Refer to the README file included with this package for *
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* driver version and adapter support. *
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* Copyright (C) 2004 Emulex Corporation. *
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* www.emulex.com *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details, a copy of which *
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* can be found in the file COPYING included with this package. *
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*******************************************************************/
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/*
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* $Id: lpfc_sli.h 1.42 2005/03/21 02:01:28EST sf_support Exp $
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*/
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/* forward declaration for LPFC_IOCB_t's use */
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struct lpfc_hba;
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/* Define the context types that SLI handles for abort and sums. */
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typedef enum _lpfc_ctx_cmd {
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LPFC_CTX_LUN,
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LPFC_CTX_TGT,
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LPFC_CTX_CTX,
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LPFC_CTX_HOST
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} lpfc_ctx_cmd;
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/* This structure is used to handle IOCB requests / responses */
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struct lpfc_iocbq {
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/* lpfc_iocbqs are used in double linked lists */
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struct list_head list;
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IOCB_t iocb; /* IOCB cmd */
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uint8_t retry; /* retry counter for IOCB cmd - if needed */
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uint8_t iocb_flag;
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#define LPFC_IO_POLL 1 /* Polling mode iocb */
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#define LPFC_IO_LIBDFC 2 /* libdfc iocb */
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#define LPFC_IO_WAIT 4
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#define LPFC_IO_HIPRI 8 /* High Priority Queue signal flag */
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uint8_t abort_count;
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uint8_t rsvd2;
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uint32_t drvrTimeout; /* driver timeout in seconds */
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void *context1; /* caller context information */
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void *context2; /* caller context information */
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void *context3; /* caller context information */
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union {
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wait_queue_head_t *hipri_wait_queue; /* High Priority Queue wait
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queue */
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struct lpfc_iocbq *rsp_iocb;
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struct lpfcMboxq *mbox;
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} context_un;
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void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
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struct lpfc_iocbq *);
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};
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#define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */
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#define SLI_IOCB_HIGH_PRIORITY 2 /* High priority command */
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#define IOCB_SUCCESS 0
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#define IOCB_BUSY 1
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#define IOCB_ERROR 2
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#define IOCB_TIMEDOUT 3
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typedef struct lpfcMboxq {
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/* MBOXQs are used in single linked lists */
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struct list_head list; /* ptr to next mailbox command */
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MAILBOX_t mb; /* Mailbox cmd */
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void *context1; /* caller context information */
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void *context2; /* caller context information */
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void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *);
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} LPFC_MBOXQ_t;
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#define MBX_POLL 1 /* poll mailbox till command done, then
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return */
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#define MBX_NOWAIT 2 /* issue command then return immediately */
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#define MBX_STOP_IOCB 4 /* Stop iocb processing till mbox cmds
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complete */
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#define LPFC_MAX_RING_MASK 4 /* max num of rctl/type masks allowed per
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ring */
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#define LPFC_MAX_RING 4 /* max num of SLI rings used by driver */
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struct lpfc_sli_ring;
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struct lpfc_sli_ring_mask {
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uint8_t profile; /* profile associated with ring */
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uint8_t rctl; /* rctl / type pair configured for ring */
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uint8_t type; /* rctl / type pair configured for ring */
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uint8_t rsvd;
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/* rcv'd unsol event */
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void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *,
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struct lpfc_sli_ring *,
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struct lpfc_iocbq *);
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};
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/* Structure used to hold SLI statistical counters and info */
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struct lpfc_sli_ring_stat {
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uint64_t iocb_event; /* IOCB event counters */
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uint64_t iocb_cmd; /* IOCB cmd issued */
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uint64_t iocb_rsp; /* IOCB rsp received */
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uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */
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uint64_t iocb_cmd_full; /* IOCB cmd ring full */
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uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */
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uint64_t iocb_rsp_full; /* IOCB rsp ring full */
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};
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/* Structure used to hold SLI ring information */
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struct lpfc_sli_ring {
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uint16_t flag; /* ring flags */
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#define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */
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#define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */
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#define LPFC_STOP_IOCB_MBX 0x010 /* Stop processing IOCB cmds mbox */
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#define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */
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#define LPFC_STOP_IOCB_MASK 0x030 /* Stop processing IOCB cmds mask */
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uint16_t abtsiotag; /* tracks next iotag to use for ABTS */
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uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */
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uint32_t next_cmdidx; /* next_cmd index */
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uint8_t rsvd;
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uint8_t ringno; /* ring number */
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uint8_t rspidx; /* current index in response ring */
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uint8_t cmdidx; /* current index in command ring */
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uint16_t numCiocb; /* number of command iocb's per ring */
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uint16_t numRiocb; /* number of rsp iocb's per ring */
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uint32_t fast_iotag; /* max fastlookup based iotag */
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uint32_t iotag_ctr; /* keeps track of the next iotag to use */
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uint32_t iotag_max; /* max iotag value to use */
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struct lpfc_iocbq ** fast_lookup; /* array of IOCB ptrs indexed by
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iotag */
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struct list_head txq;
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uint16_t txq_cnt; /* current length of queue */
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uint16_t txq_max; /* max length */
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struct list_head txcmplq;
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uint16_t txcmplq_cnt; /* current length of queue */
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uint16_t txcmplq_max; /* max length */
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uint32_t *cmdringaddr; /* virtual address for cmd rings */
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uint32_t *rspringaddr; /* virtual address for rsp rings */
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uint32_t missbufcnt; /* keep track of buffers to post */
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struct list_head postbufq;
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uint16_t postbufq_cnt; /* current length of queue */
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uint16_t postbufq_max; /* max length */
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struct list_head iocb_continueq;
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uint16_t iocb_continueq_cnt; /* current length of queue */
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uint16_t iocb_continueq_max; /* max length */
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struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK];
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uint32_t num_mask; /* number of mask entries in prt array */
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struct lpfc_sli_ring_stat stats; /* SLI statistical info */
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/* cmd ring available */
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void (*lpfc_sli_cmd_available) (struct lpfc_hba *,
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struct lpfc_sli_ring *);
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};
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/* Structure used to hold SLI statistical counters and info */
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struct lpfc_sli_stat {
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uint64_t mbox_stat_err; /* Mbox cmds completed status error */
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uint64_t mbox_cmd; /* Mailbox commands issued */
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uint64_t sli_intr; /* Count of Host Attention interrupts */
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uint32_t err_attn_event; /* Error Attn event counters */
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uint32_t link_event; /* Link event counters */
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uint32_t mbox_event; /* Mailbox event counters */
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uint32_t mbox_busy; /* Mailbox cmd busy */
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};
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/* Structure used to hold SLI information */
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struct lpfc_sli {
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uint32_t num_rings;
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uint32_t sli_flag;
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/* Additional sli_flags */
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#define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */
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#define LPFC_SLI2_ACTIVE 0x200 /* SLI2 overlay in firmware is active */
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#define LPFC_PROCESS_LA 0x400 /* Able to process link attention */
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struct lpfc_sli_ring ring[LPFC_MAX_RING];
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int fcp_ring; /* ring used for FCP initiator commands */
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int next_ring;
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int ip_ring; /* ring used for IP network drv cmds */
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struct lpfc_sli_stat slistat; /* SLI statistical info */
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struct list_head mboxq;
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uint16_t mboxq_cnt; /* current length of queue */
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uint16_t mboxq_max; /* max length */
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LPFC_MBOXQ_t *mbox_active; /* active mboxq information */
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struct timer_list mbox_tmo; /* Hold clk to timeout active mbox
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cmd */
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uint32_t *MBhostaddr; /* virtual address for mbox cmds */
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};
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/* Given a pointer to the start of the ring, and the slot number of
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* the desired iocb entry, calc a pointer to that entry.
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* (assume iocb entry size is 32 bytes, or 8 words)
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*/
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#define IOCB_ENTRY(ring,slot) ((IOCB_t *)(((char *)(ring)) + ((slot) * 32)))
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#define LPFC_MBOX_TMO 30 /* Sec tmo for outstanding mbox
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command */
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