| /******************************************************************* |
| * This file is part of the Emulex Linux Device Driver for * |
| * Fibre Channel Host Bus Adapters. * |
| * Copyright (C) 2004-2007 Emulex. All rights reserved. * |
| * EMULEX and SLI are trademarks of Emulex. * |
| * www.emulex.com * |
| * * |
| * This program is free software; you can redistribute it and/or * |
| * modify it under the terms of version 2 of the GNU General * |
| * Public License as published by the Free Software Foundation. * |
| * This program is distributed in the hope that it will be useful. * |
| * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * |
| * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * |
| * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * |
| * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * |
| * TO BE LEGALLY INVALID. See the GNU General Public License for * |
| * more details, a copy of which can be found in the file COPYING * |
| * included with this package. * |
| *******************************************************************/ |
| |
| /* forward declaration for LPFC_IOCB_t's use */ |
| struct lpfc_hba; |
| struct lpfc_vport; |
| |
| /* Define the context types that SLI handles for abort and sums. */ |
| typedef enum _lpfc_ctx_cmd { |
| LPFC_CTX_LUN, |
| LPFC_CTX_TGT, |
| LPFC_CTX_HOST |
| } lpfc_ctx_cmd; |
| |
| struct lpfc_cq_event { |
| struct list_head list; |
| union { |
| struct lpfc_mcqe mcqe_cmpl; |
| struct lpfc_acqe_link acqe_link; |
| struct lpfc_acqe_fcoe acqe_fcoe; |
| struct lpfc_acqe_dcbx acqe_dcbx; |
| struct lpfc_rcqe rcqe_cmpl; |
| struct sli4_wcqe_xri_aborted wcqe_axri; |
| struct lpfc_wcqe_complete wcqe_cmpl; |
| } cqe; |
| }; |
| |
| /* This structure is used to handle IOCB requests / responses */ |
| struct lpfc_iocbq { |
| /* lpfc_iocbqs are used in double linked lists */ |
| struct list_head list; |
| struct list_head clist; |
| uint16_t iotag; /* pre-assigned IO tag */ |
| uint16_t sli4_xritag; /* pre-assigned XRI, (OXID) tag. */ |
| struct lpfc_cq_event cq_event; |
| |
| IOCB_t iocb; /* IOCB cmd */ |
| uint8_t retry; /* retry counter for IOCB cmd - if needed */ |
| uint16_t iocb_flag; |
| #define LPFC_IO_LIBDFC 1 /* libdfc iocb */ |
| #define LPFC_IO_WAKE 2 /* High Priority Queue signal flag */ |
| #define LPFC_IO_FCP 4 /* FCP command -- iocbq in scsi_buf */ |
| #define LPFC_DRIVER_ABORTED 8 /* driver aborted this request */ |
| #define LPFC_IO_FABRIC 0x10 /* Iocb send using fabric scheduler */ |
| #define LPFC_DELAY_MEM_FREE 0x20 /* Defer free'ing of FC data */ |
| #define LPFC_EXCHANGE_BUSY 0x40 /* SLI4 hba reported XB in response */ |
| #define LPFC_USE_FCPWQIDX 0x80 /* Submit to specified FCPWQ index */ |
| |
| #define LPFC_FIP_ELS_ID_MASK 0xc000 /* ELS_ID range 0-3, non-shifted mask */ |
| #define LPFC_FIP_ELS_ID_SHIFT 14 |
| |
| uint8_t rsvd2; |
| uint32_t drvrTimeout; /* driver timeout in seconds */ |
| uint32_t fcp_wqidx; /* index to FCP work queue */ |
| struct lpfc_vport *vport;/* virtual port pointer */ |
| void *context1; /* caller context information */ |
| void *context2; /* caller context information */ |
| void *context3; /* caller context information */ |
| union { |
| wait_queue_head_t *wait_queue; |
| struct lpfc_iocbq *rsp_iocb; |
| struct lpfcMboxq *mbox; |
| struct lpfc_nodelist *ndlp; |
| } context_un; |
| |
| void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, |
| struct lpfc_iocbq *); |
| 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 IOCB_SUCCESS 0 |
| #define IOCB_BUSY 1 |
| #define IOCB_ERROR 2 |
| #define IOCB_TIMEDOUT 3 |
| |
| #define LPFC_MBX_WAKE 1 |
| #define LPFC_MBX_IMED_UNREG 2 |
| |
| typedef struct lpfcMboxq { |
| /* MBOXQs are used in single linked lists */ |
| struct list_head list; /* ptr to next mailbox command */ |
| union { |
| MAILBOX_t mb; /* Mailbox cmd */ |
| struct lpfc_mqe mqe; |
| } u; |
| struct lpfc_vport *vport;/* virtual port pointer */ |
| void *context1; /* caller context information */ |
| void *context2; /* caller context information */ |
| |
| void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *); |
| uint8_t mbox_flag; |
| struct lpfc_mcqe mcqe; |
| struct lpfc_mbx_nembed_sge_virt *sge_array; |
| } LPFC_MBOXQ_t; |
| |
| #define MBX_POLL 1 /* poll mailbox till command done, then |
| return */ |
| #define MBX_NOWAIT 2 /* issue command then return immediately */ |
| |
| #define LPFC_MAX_RING_MASK 5 /* 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_EVENT 0x020 /* Stop processing IOCB cmds event */ |
| 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 */ |
| uint32_t rspidx; /* current index in response ring */ |
| uint32_t cmdidx; /* current index in command ring */ |
| uint8_t rsvd; |
| uint8_t ringno; /* ring number */ |
| uint16_t numCiocb; /* number of command iocb's per ring */ |
| uint16_t numRiocb; /* number of rsp iocb's per ring */ |
| uint16_t sizeCiocb; /* Size of command iocb's in this ring */ |
| uint16_t sizeRiocb; /* Size of response iocb's in this 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 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 list_head iocb_continue_saveq; |
| |
| struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK]; |
| uint32_t num_mask; /* number of mask entries in prt array */ |
| void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *, |
| struct lpfc_sli_ring *, struct lpfc_iocbq *); |
| |
| 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 for configuring rings to a specific profile or rctl / type */ |
| struct lpfc_hbq_init { |
| uint32_t rn; /* Receive buffer notification */ |
| uint32_t entry_count; /* max # of entries in HBQ */ |
| uint32_t headerLen; /* 0 if not profile 4 or 5 */ |
| uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */ |
| uint32_t profile; /* Selection profile 0=all, 7=logentry */ |
| uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001, |
| * ring2=b0100 */ |
| uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */ |
| |
| uint32_t seqlenoff; |
| uint32_t maxlen; |
| uint32_t seqlenbcnt; |
| uint32_t cmdcodeoff; |
| uint32_t cmdmatch[8]; |
| uint32_t mask_count; /* number of mask entries in prt array */ |
| struct hbq_mask hbqMasks[6]; |
| |
| /* Non-config rings fields to keep track of buffer allocations */ |
| uint32_t buffer_count; /* number of buffers allocated */ |
| uint32_t init_count; /* number to allocate when initialized */ |
| uint32_t add_count; /* number to allocate when starved */ |
| } ; |
| |
| /* 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 to store link status values when port stats are reset */ |
| struct lpfc_lnk_stat { |
| uint32_t link_failure_count; |
| uint32_t loss_of_sync_count; |
| uint32_t loss_of_signal_count; |
| uint32_t prim_seq_protocol_err_count; |
| uint32_t invalid_tx_word_count; |
| uint32_t invalid_crc_count; |
| uint32_t error_frames; |
| uint32_t link_events; |
| }; |
| |
| /* 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_SLI_ACTIVE 0x200 /* SLI in firmware is active */ |
| #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */ |
| #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */ |
| #define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */ |
| #define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */ |
| |
| struct lpfc_sli_ring ring[LPFC_MAX_RING]; |
| int fcp_ring; /* ring used for FCP initiator commands */ |
| int next_ring; |
| |
| int extra_ring; /* extra ring used for other protocols */ |
| |
| 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 list_head mboxq_cmpl; |
| |
| struct timer_list mbox_tmo; /* Hold clk to timeout active mbox |
| cmd */ |
| |
| #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024 |
| struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */ |
| size_t iocbq_lookup_len; /* current lengs of the array */ |
| uint16_t last_iotag; /* last allocated IOTAG */ |
| unsigned long stats_start; /* in seconds */ |
| struct lpfc_lnk_stat lnk_stat_offsets; |
| }; |
| |
| #define LPFC_MBOX_TMO 30 /* Sec tmo for outstanding mbox |
| command */ |
| #define LPFC_MBOX_SLI4_CONFIG_TMO 60 /* Sec tmo for outstanding mbox |
| command */ |
| #define LPFC_MBOX_TMO_FLASH_CMD 300 /* Sec tmo for outstanding FLASH write |
| * or erase cmds. This is especially |
| * long because of the potential of |
| * multiple flash erases that can be |
| * spawned. |
| */ |