diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_sli.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli.h | 451 |
1 files changed, 451 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli.h b/drivers/scsi/lpfc/lpfc_sli.h new file mode 100644 index 000000000..93d976ea8 --- /dev/null +++ b/drivers/scsi/lpfc/lpfc_sli.h @@ -0,0 +1,451 @@ +/******************************************************************* + * This file is part of the Emulex Linux Device Driver for * + * Fibre Channel Host Bus Adapters. * + * Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term * + * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * + * Copyright (C) 2004-2016 Emulex. All rights reserved. * + * EMULEX and SLI are trademarks of Emulex. * + * www.broadcom.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. * + *******************************************************************/ + +#if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_SCSI_LPFC_DEBUG_FS) +#define CONFIG_SCSI_LPFC_DEBUG_FS +#endif + +/* 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; + uint16_t hdwq; + union { + struct lpfc_mcqe mcqe_cmpl; + struct lpfc_acqe_link acqe_link; + struct lpfc_acqe_fip acqe_fip; + struct lpfc_acqe_dcbx acqe_dcbx; + struct lpfc_acqe_grp5 acqe_grp5; + struct lpfc_acqe_fc_la acqe_fc; + struct lpfc_acqe_sli acqe_sli; + 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; + struct list_head dlist; + uint16_t iotag; /* pre-assigned IO tag */ + uint16_t sli4_lxritag; /* logical pre-assigned XRI. */ + uint16_t sli4_xritag; /* pre-assigned XRI, (OXID) tag. */ + uint16_t hba_wqidx; /* index to HBA work queue */ + struct lpfc_cq_event cq_event; + struct lpfc_wcqe_complete wcqe_cmpl; /* WQE cmpl */ + uint64_t isr_timestamp; + + union lpfc_wqe128 wqe; /* SLI-4 */ + IOCB_t iocb; /* SLI-3 */ + + uint8_t rsvd2; + uint8_t priority; /* OAS priority */ + uint8_t retry; /* retry counter for IOCB cmd - if needed */ + uint32_t iocb_flag; +#define LPFC_IO_LIBDFC 1 /* libdfc iocb */ +#define LPFC_IO_WAKE 2 /* Synchronous I/O completed */ +#define LPFC_IO_WAKE_TMO LPFC_IO_WAKE /* Synchronous I/O timed out */ +#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 DSS_SECURITY_OP 0x100 /* security IO */ +#define LPFC_IO_ON_TXCMPLQ 0x200 /* The IO is still on the TXCMPLQ */ +#define LPFC_IO_DIF_PASS 0x400 /* T10 DIF IO pass-thru prot */ +#define LPFC_IO_DIF_STRIP 0x800 /* T10 DIF IO strip prot */ +#define LPFC_IO_DIF_INSERT 0x1000 /* T10 DIF IO insert prot */ +#define LPFC_IO_CMD_OUTSTANDING 0x2000 /* timeout handler abort window */ + +#define LPFC_FIP_ELS_ID_MASK 0xc000 /* ELS_ID range 0-3, non-shifted mask */ +#define LPFC_FIP_ELS_ID_SHIFT 14 + +#define LPFC_IO_OAS 0x10000 /* OAS FCP IO */ +#define LPFC_IO_FOF 0x20000 /* FOF FCP IO */ +#define LPFC_IO_LOOPBACK 0x40000 /* Loopback IO */ +#define LPFC_PRLI_NVME_REQ 0x80000 /* This is an NVME PRLI. */ +#define LPFC_PRLI_FCP_REQ 0x100000 /* This is an NVME PRLI. */ +#define LPFC_IO_NVME 0x200000 /* NVME FCP command */ +#define LPFC_IO_NVME_LS 0x400000 /* NVME LS command */ +#define LPFC_IO_NVMET 0x800000 /* NVMET command */ + + uint32_t drvrTimeout; /* driver timeout in seconds */ + 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; + struct lpfc_node_rrq *rrq; + } context_un; + + void (*fabric_iocb_cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, + struct lpfc_iocbq *); + void (*wait_iocb_cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, + struct lpfc_iocbq *); + void (*iocb_cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, + struct lpfc_iocbq *); + void (*wqe_cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, + struct lpfc_wcqe_complete *); +}; + +#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 SLI_WQE_RET_WQE 1 /* Return WQE if cmd ring full */ + +#define WQE_SUCCESS 0 +#define WQE_BUSY 1 +#define WQE_ERROR 2 +#define WQE_TIMEDOUT 3 +#define WQE_ABORTED 4 + +#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 *ctx_ndlp; /* caller ndlp information */ + void *ctx_buf; /* caller buffer information */ + void *context3; + + void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *); + uint8_t mbox_flag; + uint16_t in_ext_byte_len; + uint16_t out_ext_byte_len; + uint8_t mbox_offset_word; + 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_SLI3_MAX_RING 4 /* Max num of SLI3 rings used by driver. + For SLI4, an additional ring for each + FCP WQ will be allocated. */ + +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 */ +}; + +struct lpfc_sli3_ring { + 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 */ + 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 *cmdringaddr; /* virtual address for cmd rings */ + uint32_t *rspringaddr; /* virtual address for rsp rings */ +}; + +struct lpfc_sli4_ring { + struct lpfc_queue *wqp; /* Pointer to associated WQ */ +}; + + +/* 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 */ + + uint8_t rsvd; + uint8_t ringno; /* ring number */ + + spinlock_t ring_lock; /* lock for issuing commands */ + + 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 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 *); + union { + struct lpfc_sli3_ring sli3; + struct lpfc_sli4_ring sli4; + } sli; +}; + +/* 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 */ + uint64_t sli_prev_intr; /* Previous cnt of Host Attention interrupts */ + uint64_t sli_ips; /* Host Attention interrupts per sec */ + 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 */ +#define LPFC_SLI_SUPPRESS_RSP 0x4000 /* Suppress RSP feature is supported */ +#define LPFC_SLI_USE_EQDR 0x8000 /* EQ Delay Register is supported */ +#define LPFC_QUEUE_FREE_INIT 0x10000 /* Queue freeing is in progress */ +#define LPFC_QUEUE_FREE_WAIT 0x20000 /* Hold Queue free as it is being + * used outside worker thread + */ + + struct lpfc_sli_ring *sli3_ring; + + 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 */ + time64_t stats_start; /* in seconds */ + struct lpfc_lnk_stat lnk_stat_offsets; +}; + +/* Timeout for normal outstanding mbox command (Seconds) */ +#define LPFC_MBOX_TMO 30 +/* Timeout for non-flash-based outstanding sli_config mbox command (Seconds) */ +#define LPFC_MBOX_SLI4_CONFIG_TMO 60 +/* Timeout for flash-based outstanding sli_config mbox command (Seconds) */ +#define LPFC_MBOX_SLI4_CONFIG_EXTENDED_TMO 300 +/* Timeout for other flash-based outstanding mbox command (Seconds) */ +#define LPFC_MBOX_TMO_FLASH_CMD 300 + +struct lpfc_io_buf { + /* Common fields */ + struct list_head list; + void *data; + + dma_addr_t dma_handle; + dma_addr_t dma_phys_sgl; + + struct sli4_sge *dma_sgl; /* initial segment chunk */ + + /* linked list of extra sli4_hybrid_sge */ + struct list_head dma_sgl_xtra_list; + + /* list head for fcp_cmd_rsp buf */ + struct list_head dma_cmd_rsp_list; + + struct lpfc_iocbq cur_iocbq; + struct lpfc_sli4_hdw_queue *hdwq; + uint16_t hdwq_no; + uint16_t cpu; + + struct lpfc_nodelist *ndlp; + uint32_t timeout; + uint16_t flags; +#define LPFC_SBUF_XBUSY 0x1 /* SLI4 hba reported XB on WCQE cmpl */ +#define LPFC_SBUF_BUMP_QDEPTH 0x2 /* bumped queue depth counter */ + /* External DIF device IO conversions */ +#define LPFC_SBUF_NORMAL_DIF 0x4 /* normal mode to insert/strip */ +#define LPFC_SBUF_PASS_DIF 0x8 /* insert/strip mode to passthru */ +#define LPFC_SBUF_NOT_POSTED 0x10 /* SGL failed post to FW. */ + uint16_t status; /* From IOCB Word 7- ulpStatus */ + uint32_t result; /* From IOCB Word 4. */ + + uint32_t seg_cnt; /* Number of scatter-gather segments returned by + * dma_map_sg. The driver needs this for calls + * to dma_unmap_sg. + */ + unsigned long start_time; + spinlock_t buf_lock; /* lock used in case of simultaneous abort */ + bool expedite; /* this is an expedite io_buf */ + + union { + /* SCSI specific fields */ + struct { + struct scsi_cmnd *pCmd; + struct lpfc_rport_data *rdata; + uint32_t prot_seg_cnt; /* seg_cnt's counterpart for + * protection data + */ + + /* + * data and dma_handle are the kernel virtual and bus + * address of the dma-able buffer containing the + * fcp_cmd, fcp_rsp and a scatter gather bde list that + * supports the sg_tablesize value. + */ + struct fcp_cmnd *fcp_cmnd; + struct fcp_rsp *fcp_rsp; + + wait_queue_head_t *waitq; + +#ifdef CONFIG_SCSI_LPFC_DEBUG_FS + /* Used to restore any changes to protection data for + * error injection + */ + void *prot_data_segment; + uint32_t prot_data; + uint32_t prot_data_type; +#define LPFC_INJERR_REFTAG 1 +#define LPFC_INJERR_APPTAG 2 +#define LPFC_INJERR_GUARD 3 +#endif + }; + + /* NVME specific fields */ + struct { + struct nvmefc_fcp_req *nvmeCmd; + uint16_t qidx; + }; + }; +#ifdef CONFIG_SCSI_LPFC_DEBUG_FS + uint64_t ts_cmd_start; + uint64_t ts_last_cmd; + uint64_t ts_cmd_wqput; + uint64_t ts_isr_cmpl; + uint64_t ts_data_io; +#endif +}; |