diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_sli.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli.h | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli.h b/drivers/scsi/lpfc/lpfc_sli.h new file mode 100644 index 00000000000..abd9a8c84e9 --- /dev/null +++ b/drivers/scsi/lpfc/lpfc_sli.h @@ -0,0 +1,216 @@ +/******************************************************************* + * 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_sli.h 1.42 2005/03/21 02:01:28EST sf_support Exp $ + */ + +/* forward declaration for LPFC_IOCB_t's use */ +struct lpfc_hba; + +/* Define the context types that SLI handles for abort and sums. */ +typedef enum _lpfc_ctx_cmd { + LPFC_CTX_LUN, + LPFC_CTX_TGT, + LPFC_CTX_CTX, + LPFC_CTX_HOST +} lpfc_ctx_cmd; + +/* This structure is used to handle IOCB requests / responses */ +struct lpfc_iocbq { + /* lpfc_iocbqs are used in double linked lists */ + struct list_head list; + IOCB_t iocb; /* IOCB cmd */ + uint8_t retry; /* retry counter for IOCB cmd - if needed */ + uint8_t iocb_flag; +#define LPFC_IO_POLL 1 /* Polling mode iocb */ +#define LPFC_IO_LIBDFC 2 /* libdfc iocb */ +#define LPFC_IO_WAIT 4 +#define LPFC_IO_HIPRI 8 /* High Priority Queue signal flag */ + + uint8_t abort_count; + uint8_t rsvd2; + uint32_t drvrTimeout; /* driver timeout in seconds */ + void *context1; /* caller context information */ + void *context2; /* caller context information */ + void *context3; /* caller context information */ + union { + wait_queue_head_t *hipri_wait_queue; /* High Priority Queue wait + queue */ + struct lpfc_iocbq *rsp_iocb; + struct lpfcMboxq *mbox; + } context_un; + + void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, + struct lpfc_iocbq *); + +}; + +#define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */ +#define SLI_IOCB_HIGH_PRIORITY 2 /* High priority command */ + +#define IOCB_SUCCESS 0 +#define IOCB_BUSY 1 +#define IOCB_ERROR 2 +#define IOCB_TIMEDOUT 3 + +typedef struct lpfcMboxq { + /* MBOXQs are used in single linked lists */ + struct list_head list; /* ptr to next mailbox command */ + MAILBOX_t mb; /* Mailbox cmd */ + void *context1; /* caller context information */ + void *context2; /* caller context information */ + + void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *); + +} LPFC_MBOXQ_t; + +#define MBX_POLL 1 /* poll mailbox till command done, then + return */ +#define MBX_NOWAIT 2 /* issue command then return immediately */ +#define MBX_STOP_IOCB 4 /* Stop iocb processing till mbox cmds + complete */ + +#define LPFC_MAX_RING_MASK 4 /* max num of rctl/type masks allowed per + ring */ +#define LPFC_MAX_RING 4 /* max num of SLI rings used by driver */ + +struct lpfc_sli_ring; + +struct lpfc_sli_ring_mask { + uint8_t profile; /* profile associated with ring */ + uint8_t rctl; /* rctl / type pair configured for ring */ + uint8_t type; /* rctl / type pair configured for ring */ + uint8_t rsvd; + /* rcv'd unsol event */ + void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *, + struct lpfc_sli_ring *, + struct lpfc_iocbq *); +}; + + +/* Structure used to hold SLI statistical counters and info */ +struct lpfc_sli_ring_stat { + uint64_t iocb_event; /* IOCB event counters */ + uint64_t iocb_cmd; /* IOCB cmd issued */ + uint64_t iocb_rsp; /* IOCB rsp received */ + uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */ + uint64_t iocb_cmd_full; /* IOCB cmd ring full */ + uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */ + uint64_t iocb_rsp_full; /* IOCB rsp ring full */ +}; + +/* Structure used to hold SLI ring information */ +struct lpfc_sli_ring { + uint16_t flag; /* ring flags */ +#define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */ +#define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */ +#define LPFC_STOP_IOCB_MBX 0x010 /* Stop processing IOCB cmds mbox */ +#define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */ +#define LPFC_STOP_IOCB_MASK 0x030 /* Stop processing IOCB cmds mask */ + uint16_t abtsiotag; /* tracks next iotag to use for ABTS */ + + uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */ + uint32_t next_cmdidx; /* next_cmd index */ + uint8_t rsvd; + uint8_t ringno; /* ring number */ + uint8_t rspidx; /* current index in response ring */ + uint8_t cmdidx; /* current index in command ring */ + uint16_t numCiocb; /* number of command iocb's per ring */ + uint16_t numRiocb; /* number of rsp iocb's per ring */ + + uint32_t fast_iotag; /* max fastlookup based iotag */ + uint32_t iotag_ctr; /* keeps track of the next iotag to use */ + uint32_t iotag_max; /* max iotag value to use */ + struct lpfc_iocbq ** fast_lookup; /* array of IOCB ptrs indexed by + iotag */ + struct list_head txq; + uint16_t txq_cnt; /* current length of queue */ + uint16_t txq_max; /* max length */ + struct list_head txcmplq; + uint16_t txcmplq_cnt; /* current length of queue */ + uint16_t txcmplq_max; /* max length */ + uint32_t *cmdringaddr; /* virtual address for cmd rings */ + uint32_t *rspringaddr; /* virtual address for rsp rings */ + uint32_t missbufcnt; /* keep track of buffers to post */ + struct list_head postbufq; + uint16_t postbufq_cnt; /* current length of queue */ + uint16_t postbufq_max; /* max length */ + struct list_head iocb_continueq; + uint16_t iocb_continueq_cnt; /* current length of queue */ + uint16_t iocb_continueq_max; /* max length */ + + struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK]; + uint32_t num_mask; /* number of mask entries in prt array */ + + struct lpfc_sli_ring_stat stats; /* SLI statistical info */ + + /* cmd ring available */ + void (*lpfc_sli_cmd_available) (struct lpfc_hba *, + struct lpfc_sli_ring *); +}; + +/* Structure used to hold SLI statistical counters and info */ +struct lpfc_sli_stat { + uint64_t mbox_stat_err; /* Mbox cmds completed status error */ + uint64_t mbox_cmd; /* Mailbox commands issued */ + uint64_t sli_intr; /* Count of Host Attention interrupts */ + uint32_t err_attn_event; /* Error Attn event counters */ + uint32_t link_event; /* Link event counters */ + uint32_t mbox_event; /* Mailbox event counters */ + uint32_t mbox_busy; /* Mailbox cmd busy */ +}; + +/* Structure used to hold SLI information */ +struct lpfc_sli { + uint32_t num_rings; + uint32_t sli_flag; + + /* Additional sli_flags */ +#define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */ +#define LPFC_SLI2_ACTIVE 0x200 /* SLI2 overlay in firmware is active */ +#define LPFC_PROCESS_LA 0x400 /* Able to process link attention */ + + struct lpfc_sli_ring ring[LPFC_MAX_RING]; + int fcp_ring; /* ring used for FCP initiator commands */ + int next_ring; + + int ip_ring; /* ring used for IP network drv cmds */ + + struct lpfc_sli_stat slistat; /* SLI statistical info */ + struct list_head mboxq; + uint16_t mboxq_cnt; /* current length of queue */ + uint16_t mboxq_max; /* max length */ + LPFC_MBOXQ_t *mbox_active; /* active mboxq information */ + + struct timer_list mbox_tmo; /* Hold clk to timeout active mbox + cmd */ + + uint32_t *MBhostaddr; /* virtual address for mbox cmds */ +}; + +/* Given a pointer to the start of the ring, and the slot number of + * the desired iocb entry, calc a pointer to that entry. + * (assume iocb entry size is 32 bytes, or 8 words) + */ +#define IOCB_ENTRY(ring,slot) ((IOCB_t *)(((char *)(ring)) + ((slot) * 32))) + +#define LPFC_MBOX_TMO 30 /* Sec tmo for outstanding mbox + command */ |