/*******************************************************************
* 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 *
* Portions Copyright (C) 2004-2005 Christoph Hellwig *
* *
* 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. *
*******************************************************************/
#include <scsi/scsi_host.h>
struct lpfc_sli2_slim;
#define LPFC_MAX_TARGET 256 /* max number of targets supported */
#define LPFC_MAX_DISC_THREADS 64 /* max outstanding discovery els
requests */
#define LPFC_MAX_NS_RETRY 3 /* Number of retry attempts to contact
the NameServer before giving up. */
#define LPFC_CMD_PER_LUN 3 /* max outstanding cmds per lun */
#define LPFC_SG_SEG_CNT 64 /* sg element count per scsi cmnd */
#define LPFC_IOCB_LIST_CNT 2250 /* list of IOCBs for fast-path usage. */
#define LPFC_Q_RAMP_UP_INTERVAL 120 /* lun q_depth ramp up interval */
/*
* Following time intervals are used of adjusting SCSI device
* queue depths when there are driver resource error or Firmware
* resource error.
*/
#define QUEUE_RAMP_DOWN_INTERVAL (1 * HZ) /* 1 Second */
#define QUEUE_RAMP_UP_INTERVAL (300 * HZ) /* 5 minutes */
/* Number of exchanges reserved for discovery to complete */
#define LPFC_DISC_IOCB_BUFF_COUNT 20
#define LPFC_HB_MBOX_INTERVAL 5 /* Heart beat interval in seconds. */
#define LPFC_HB_MBOX_TIMEOUT 30 /* Heart beat timeout in seconds. */
/* Define macros for 64 bit support */
#define putPaddrLow(addr) ((uint32_t) (0xffffffff & (u64)(addr)))
#define putPaddrHigh(addr) ((uint32_t) (0xffffffff & (((u64)(addr))>>32)))
#define getPaddr(high, low) ((dma_addr_t)( \
(( (u64)(high)<<16 ) << 16)|( (u64)(low))))
/* Provide maximum configuration definitions. */
#define LPFC_DRVR_TIMEOUT 16 /* driver iocb timeout value in sec */
#define FC_MAX_ADPTMSG 64
#define MAX_HBAEVT 32
enum lpfc_polling_flags {
ENABLE_FCP_RING_POLLING = 0x1,
DISABLE_FCP_RING_INT = 0x2
};
/* Provide DMA memory definitions the driver uses per port instance. */
struct lpfc_dmabuf {
struct list_head list;
void *virt; /* virtual address ptr */
dma_addr_t phys; /* mapped address */
};
struct lpfc_dma_pool {
struct lpfc_dmabuf *elements;
uint32_t max_count;
uint32_t current_count;
};
struct hbq_dmabuf {
struct lpfc_dmabuf dbuf;
uint32_t size;
uint32_t tag;
};
/* Priority bit. Set value to exceed low water mark in lpfc_mem. */
#define MEM_PRI 0x100
/****************************************************************************/
/* Device VPD save area */
/****************************************************************************/
typedef struct lpfc_vpd {
uint32_t status; /* vpd status value */
uint32_t length; /* number of bytes actually returned */
struct {
uint32_t rsvd1; /* Revision numbers */
uint32_t biuRev;
uint32_t smRev;
uint32_t smFwRev;
uint32_t endecRev;
uint16_t rBit;
uint8_t fcphHigh;
uint8_t fcphLow;
uint8_t feaLevelHigh;
uint8_t feaLevelLow;
uint32_t postKernRev;
uint32_t opFwRev;
uint8_t opFwName[16];
uint32_t sli1FwRev;
uint8_t sli1FwName[16];
uint32_t sli2FwRev;
uint8_t sli2FwName[16];
} rev;
struct {
#ifdef __BIG_ENDIAN_BITFIELD
uint32_t rsvd2 :24; /* Reserved */
uint32_t cmv : 1; /* Configure Max VPIs */
uint32_t ccrp : 1; /* Config Command Ring Polling */
uint32_t csah : 1; /* Configure Synchronous Abort Handling */
uint32_t chbs : 1; /* Cofigure Host Backing store */
uint32_t cinb : 1; /* Enable Interrupt Notification Block */
uint32_t cerbm : 1; /* Configure Enhanced Receive Buf Mgmt */
uint32_t cmx : 1; /* Configure Max XRIs */
uint32_t cmr : 1; /* Configure Max RPIs */
#else /* __LITTLE_ENDIAN */
uint32_t cmr : 1; /* Configure Max RPIs */
uint32_t cmx : 1; /* Configure Max XRIs */
uint32_t cerbm : 1; /* Configure Enhanced Receive Buf Mgmt */
uint32_t cinb : 1; /* Enable Interrupt Notification Block */
uint32_t chbs : 1; /* Cofigure Host Backing store */
uint32_t csah : 1; /* Configure Synchronous Abort Handling */
uint32_t ccrp : 1; /* Config Command Ring Polling */
uint32_t cmv : 1; /* Configure Max VPIs */
uint32_t rsvd2 :24; /* Reserved */
#endif
} sli3Feat;
} lpfc_vpd_t;
struct lpfc_scsi_buf;
/*
* lpfc stat counters
*/
struct lpfc_stats {
/* Statistics for ELS commands */
uint32_t elsLogiCol;
uint32_t elsRetryExceeded;
uint32_t elsXmitRetry;
uint32_t elsDelayRetry;
uint32_t elsRcvDrop;
uint32_t elsRcvFrame;
uint32_t elsRcvRSCN;
uint32_t elsRcvRNID;
uint32_t elsRcvFARP;
uint32_t elsRcvFARPR;
uint32_t elsRcvFLOGI;
uint32_t elsRcvPLOGI;
uint32_t elsRcvADISC;
uint32_t elsRcvPDISC;
uint32_t elsRcvFAN;
uint32_t elsRcvLOGO;
uint32_t elsRcvPRLO;
uint32_t elsRcvPRLI;
uint32_t elsRcvLIRR;
uint32_t elsRcvRPS;
uint32_t elsRcvRPL;
uint32_t elsXmitFLOGI;
uint32_t elsXmitFDISC;
uint32_t elsXmitPLOGI;
uint32_t elsXmitPRLI;
uint32_t elsXmitADISC;
uint32_t elsXmitLOGO;
uint32_t elsXmitSCR;
uint32_t elsXmitRNID;
uint32_t elsXmitFARP;
uint32_t elsXmitFARPR;
uint32_t elsXmitACC;
uint32_t elsXmitLSRJT;
uint32_t frameRcvBcast;
uint32_t frameRcvMulti;
uint32_t strayXmitCmpl;
uint32_t frameXmitDelay;
uint32_t xriCmdCmpl;
uint32_t xriStatErr;
uint32_t LinkUp;
uint32_t LinkDown;
uint32_t LinkMultiEvent;
uint32_t NoRcvBuf;
uint32_t fcpCmd;
uint32_t fcpCmpl;
uint32_t fcpRspErr;
uint32_t fcpRemoteStop;
uint32_t fcpPortRjt;
uint32_t fcpPortBusy;
uint32_t fcpError;
uint32_t fcpLocalErr;
};
enum sysfs_mbox_state {
SMBOX_IDLE,
SMBOX_WRITING,
SMBOX_READING
};
struct lpfc_sysfs_mbox {
enum sysfs_mbox_state state;
size_t offset;
struct lpfcMboxq * mbox;
};
struct lpfc_hba;
enum discovery_state {
LPFC_VPORT_UNKNOWN = 0, /* vport state is unknown */
LPFC_VPORT_FAILED = 1, /* vport has failed */
LPFC_LOCAL_CFG_LINK = 6, /* local NPORT Id configured */
LPFC_FLOGI = 7, /* FLOGI sent to Fabric */
LPFC_FDISC = 8, /* FDISC sent for vport */
LPFC_FABRIC_CFG_LINK = 9, /* Fabric assigned NPORT Id
* configured */
LPFC_NS_REG = 10, /* Register with NameServer */
LPFC_NS_QRY = 11, /* Query NameServer for NPort ID list */
LPFC_BUILD_DISC_LIST = 12, /* Build ADISC and PLOGI lists for
* device authentication / discovery */
LPFC_DISC_AUTH = 13, /* Processing ADISC list */
LPFC_VPORT_READY = 32,
};
enum hba_state {
LPFC_LINK_UNKNOWN = 0, /* HBA state is unknown */
LPFC_WARM_START = 1, /* HBA state after selective reset */
LPFC_INIT_START = 2, /* Initial state after board reset */
LPFC_INIT_MBX_CMDS = 3, /* Initialize HBA with mbox commands */
LPFC_LINK_DOWN = 4, /* HBA initialized, link is down */
LPFC_LINK_UP = 5, /* Link is up - issue READ_LA */
LPFC_CLEAR_LA = 6, /* authentication cmplt - issue
* CLEAR_LA */
LPFC_HBA_READY = 32,
LPFC_HBA_ERROR = -1
};
struct lpfc_vport {
struct list_head listentry;
struct lpfc_hba *phba;
uint8_t port_type;
#define LPFC_PHYSICAL_PORT 1
#define LPFC_NPIV_PORT 2
#define LPFC_FABRIC_PORT 3
enum discovery_state port_state;
uint16_t vpi;
uint32_t fc_flag; /* FC flags */
/* Several of these flags are HBA centric and should be moved to
* phba->link_flag (e.g. FC_PTP, FC_PUBLIC_LOOP)
*/
#define FC_PT2PT 0x1 /* pt2pt with no fabric */
#define FC_PT2PT_PLOGI 0x2 /* pt2pt initiate PLOGI */
#define FC_DISC_TMO 0x4 /* Discovery timer running */
#define FC_PUBLIC_LOOP 0x8 /* Public loop */
#define FC_LBIT 0x10 /* LOGIN bit in loopinit set */
#define FC_RSCN_MODE 0x20 /* RSCN cmd rcv'ed */
#define FC_NLP_MORE 0x40 /* More node to process in node tbl */
#define FC_OFFLINE_MODE 0x80 /* Interface is offline for diag */
#define FC_FABRIC 0x100 /* We are fabric attached */
#define FC_ESTABLISH_LINK 0x200 /* Reestablish Link */
#define FC_RSCN_DISCOVERY 0x400 /* Auth all devices after RSCN */
#define FC_SCSI_SCAN_TMO 0x4000 /* scsi scan timer running */
#define FC_ABORT_DISCOVERY 0x8000 /* we want to abort discovery */
#define FC_NDISC_ACTIVE 0x10000 /* NPort discovery active */
#define FC_BYPASSED_MODE 0x20000 /* NPort is in bypassed mode */
#define FC_RFF_NOT_SUPPORTED 0x40000 /* RFF_ID was rejected by switch */
#define FC_VPORT_NEEDS_REG_VPI 0x80000 /* Needs to have its vpi registered */
#define FC_RSCN_DEFERRED 0x100000 /* A deferred RSCN being processed */
struct list_head fc_nodes;
/* Keep counters for the number of entries in each list. */
uint16_t fc_plogi_cnt;
uint16_t fc_adisc_cnt;
uint16_t fc_reglogin_cnt;
uint16_t fc_prli_cnt;
uint16_t fc_unmap_cnt;
uint16_t fc_map_cnt;
uint16_t fc_npr_cnt;
uint16_t fc_unused_cnt;
struct serv_parm fc_sparam; /* buffer for our service parameters */
uint32_t fc_myDID; /* fibre channel S_ID */
uint32_t fc_prevDID; /* previous fibre channel S_ID */
int32_t stopped; /* HBA has not been restarted since last ERATT */
uint8_t fc_linkspeed; /* Link speed after last READ_LA */
uint32_t num_disc_nodes; /*in addition to hba_state */
uint32_t fc_nlp_cnt; /* outstanding NODELIST requests */
uint32_t fc_rscn_id_cnt; /* count of RSCNs payloads in list */
struct lpfc_dmabuf *fc_rscn_id_list[FC_MAX_HOLD_RSCN];
struct lpfc_name fc_nodename; /* fc nodename */
struct lpfc_name fc_portname; /* fc portname */
struct lpfc_work_evt disc_timeout_evt;
struct timer_list fc_disctmo; /* Discovery rescue timer */
uint8_t fc_ns_retry; /* retries for fabric nameserver */
uint32_t fc_prli_sent; /* cntr for outstanding PRLIs */
spinlock_t work_port_lock;
uint32_t work_port_events; /* Timeout to be handled */
#define WORKER_DISC_TMO 0x1 /* vport: Discovery timeout */
#define WORKER_ELS_TMO 0x2 /* vport: ELS timeout */
#define WORKER_FDMI_TMO 0x4 /* vport: FDMI timeout */
#define WORKER_MBOX_TMO 0x100 /* hba: MBOX timeout */
#define WORKER_HB_TMO 0x200 /* hba: Heart beat timeout */
#define WORKER_FABRIC_BLOCK_TMO 0x400 /* hba: fabric block timout */
#define WORKER_RAMP_DOWN_QUEUE 0x800 /* hba: Decrease Q depth */
#define WORKER_RAMP_UP_QUEUE 0x1000 /* hba: Increase Q depth */
struct timer_list fc_fdmitmo;
struct timer_list els_tmofunc;
int unreg_vpi_cmpl;
uint8_t load_flag;
#define FC_LOADING 0x1 /* HBA in process of loading drvr */
#define FC_UNLOADING 0x2 /* HBA in process of unloading drvr */
char *vname; /* Application assigned name */
/* Vport Config Parameters */
uint32_t cfg_scan_down;
uint32_t cfg_lun_queue_depth;
uint32_t cfg_nodev_tmo;
uint32_t cfg_devloss_tmo;
uint32_t cfg_restrict_login;
uint32_t cfg_peer_port_login;
uint32_t cfg_fcp_class;
uint32_t cfg_use_adisc;
uint32_t cfg_fdmi_on;
uint32_t cfg_discovery_threads;
uint32_t cfg_log_verbose;
uint32_t cfg_max_luns;
uint32_t dev_loss_tmo_changed;
struct fc_vport *fc_vport;
#ifdef CONFIG_LPFC_DEBUG_FS
struct dentry *debug_disc_trc;
struct dentry *debug_nodelist;
struct dentry *vport_debugfs_root;
struct lpfc_debugfs_trc *disc_trc;
atomic_t disc_trc_cnt;
#endif
};
struct hbq_s {
uint16_t entry_count; /* Current number of HBQ slots */
uint32_t next_hbqPutIdx; /* Index to next HBQ slot to use */
uint32_t hbqPutIdx; /* HBQ slot to use */
uint32_t local_hbqGetIdx; /* Local copy of Get index from Port */
void *hbq_virt; /* Virtual ptr to this hbq */
struct list_head hbq_buffer_list; /* buffers assigned to this HBQ */
/* Callback for HBQ buffer allocation */
struct hbq_dmabuf *(*hbq_alloc_buffer) (struct lpfc_hba *);
/* Callback for HBQ buffer free */
void (*hbq_free_buffer) (struct lpfc_hba *,
struct hbq_dmabuf *);
};
#define LPFC_MAX_HBQS 4
/* this matches the position in the lpfc_hbq_defs array */
#define LPFC_ELS_HBQ 0
#define LPFC_EXTRA_HBQ 1
struct lpfc_hba {
struct lpfc_sli sli;
uint32_t sli_rev; /* SLI2 or SLI3 */
uint32_t sli3_options; /* Mask of enabled SLI3 options */
#define LPFC_SLI3_ENABLED 0x01
#define LPFC_SLI3_HBQ_ENABLED 0x02
#define LPFC_SLI3_NPIV_ENABLED 0x04
#define LPFC_SLI3_VPORT_TEARDOWN 0x08
uint32_t iocb_cmd_size;
uint32_t iocb_rsp_size;
enum hba_state link_state;
uint32_t link_flag; /* link state flags */
#define LS_LOOPBACK_MODE 0x1 /* NPort is in Loopback mode */
/* This flag is set while issuing */
/* INIT_LINK mailbox command */
#define LS_NPIV_FAB_SUPPORTED 0x2 /* Fabric supports NPIV */
#define LS_IGNORE_ERATT 0x3 /* intr handler should ignore ERATT */
struct lpfc_sli2_slim *slim2p;
struct lpfc_dmabuf hbqslimp;
dma_addr_t slim2p_mapping;
uint16_t pci_cfg_value;
uint8_t work_found;
#define LPFC_MAX_WORKER_ITERATION 4
uint8_t fc_linkspeed; /* Link speed after last READ_LA */
uint32_t fc_eventTag; /* event tag for link attention */
struct timer_list fc_estabtmo; /* link establishment timer */
/* These fields used to be binfo */
uint32_t fc_pref_DID; /* preferred D_ID */
uint8_t fc_pref_ALPA; /* preferred AL_PA */
uint32_t fc_edtov; /* E_D_TOV timer value */
uint32_t fc_arbtov; /* ARB_TOV timer value */
uint32_t fc_ratov; /* R_A_TOV timer value */
uint32_t fc_rttov; /* R_T_TOV timer value */
uint32_t fc_altov; /* AL_TOV timer value */
uint32_t fc_crtov; /* C_R_TOV timer value */
uint32_t fc_citov; /* C_I_TOV timer value */
struct serv_parm fc_fabparam; /* fabric service parameters buffer */
uint8_t alpa_map[128]; /* AL_PA map from READ_LA */
uint32_t lmt;
uint32_t fc_topology; /* link topology, from LINK INIT */
struct lpfc_stats fc_stat;
struct lpfc_nodelist fc_fcpnodev; /* nodelist entry for no device */
uint32_t nport_event_cnt; /* timestamp for nlplist entry */
uint8_t wwnn[8];
uint8_t wwpn[8];
uint32_t RandomData[7];
/* HBA Config Parameters */
uint32_t cfg_ack0;
uint32_t cfg_enable_npiv;
uint32_t cfg_topology;
uint32_t cfg_link_speed;
uint32_t cfg_cr_delay;
uint32_t cfg_cr_count;
uint32_t cfg_multi_ring_support;
uint32_t cfg_multi_ring_rctl;
uint32_t cfg_multi_ring_type;
uint32_t cfg_poll;
uint32_t cfg_poll_tmo;
uint32_t cfg_use_msi;
uint32_t cfg_sg_seg_cnt;
uint32_t cfg_sg_dma_buf_size;
uint64_t cfg_soft_wwnn;
uint64_t cfg_soft_wwpn;
uint32_t cfg_hba_queue_depth;
lpfc_vpd_t vpd; /* vital product data */
struct pci_dev *pcidev;
struct list_head work_list;
uint32_t work_ha; /* Host Attention Bits for WT */
uint32_t work_ha_mask; /* HA Bits owned by WT */
uint32_t work_hs; /* HS stored in case of ERRAT */
uint32_t work_status[2]; /* Extra status from SLIM */
wait_queue_head_t *work_wait;
struct task_struct *worker_thread;
uint32_t hbq_count; /* Count of configured HBQs */
struct hbq_s hbqs[LPFC_MAX_HBQS]; /* local copy of hbq indicies */
unsigned long pci_bar0_map; /* Physical address for PCI BAR0 */
unsigned long pci_bar2_map; /* Physical address for PCI BAR2 */
void __iomem *slim_memmap_p; /* Kernel memory mapped address for
PCI BAR0 */
void __iomem *ctrl_regs_memmap_p;/* Kernel memory mapped address for
PCI BAR2 */
void __iomem *MBslimaddr; /* virtual address for mbox cmds */
void __iomem *HAregaddr; /* virtual address for host attn reg */
void __iomem *CAregaddr; /* virtual address for chip attn reg */
void __iomem *HSregaddr; /* virtual address for host status
reg */
void __iomem *HCregaddr; /* virtual address for host ctl reg */
struct lpfc_hgp __iomem *host_gp; /* Host side get/put pointers */
uint32_t __iomem *hbq_put; /* Address in SLIM to HBQ put ptrs */
uint32_t *hbq_get; /* Host mem address of HBQ get ptrs */
int brd_no; /* FC board number */
char SerialNumber[32]; /* adapter Serial Number */
char OptionROMVersion[32]; /* adapter BIOS / Fcode version */
char ModelDesc[256]; /* Model Description */
char ModelName[80]; /* Model Name */
char ProgramType[256]; /* Program Type */
char Port[20]; /* Port No */
uint8_t vpd_flag; /* VPD data flag */
#define VPD_MODEL_DESC 0x1 /* valid vpd model description */
#define VPD_MODEL_NAME 0x2 /* valid vpd model name */
#define VPD_PROGRAM_TYPE 0x4 /* valid vpd program type */
#define VPD_PORT 0x8 /* valid vpd port data */
#define VPD_MASK 0xf /* mask for any vpd data */
uint8_t soft_wwn_enable;
struct timer_list fcp_poll_timer;
/*
* stat counters
*/
uint64_t fc4InputRequests;
uint64_t fc4OutputRequests;
uint64_t fc4ControlRequests;
struct lpfc_sysfs_mbox sysfs_mbox;
/* fastpath list. */
spinlock_t scsi_buf_list_lock;
struct list_head lpfc_scsi_buf_list;
uint32_t total_scsi_bufs;
struct list_head lpfc_iocb_list;
uint32_t total_iocbq_bufs;
spinlock_t hbalock;
/* pci_mem_pools */
struct pci_pool *lpfc_scsi_dma_buf_pool;
struct pci_pool *lpfc_mbuf_pool;
struct pci_pool *lpfc_hbq_pool;
struct lpfc_dma_pool lpfc_mbuf_safety_pool;
mempool_t *mbox_mem_pool;
mempool_t *nlp_mem_pool;
struct fc_host_statistics link_stats;
uint8_t using_msi;
struct list_head port_list;
struct lpfc_vport *pport; /* physical lpfc_vport pointer */
uint16_t max_vpi; /* Maximum virtual nports */
#define LPFC_MAX_VPI 100 /* Max number of VPI supported */
#define LPFC_MAX_VPORTS (LPFC_MAX_VPI+1)/* Max number of VPorts supported */
unsigned long *vpi_bmask; /* vpi allocation table */
/* Data structure used by fabric iocb scheduler */
struct list_head fabric_iocb_list;
atomic_t fabric_iocb_count;
struct timer_list fabric_block_timer;
unsigned long bit_flags;
#define FABRIC_COMANDS_BLOCKED 0
atomic_t num_rsrc_err;
atomic_t num_cmd_success;
unsigned long last_rsrc_error_time;
unsigned long last_ramp_down_time;
unsigned long last_ramp_up_time;
#ifdef CONFIG_LPFC_DEBUG_FS
struct dentry *hba_debugfs_root;
atomic_t debugfs_vport_count;
struct dentry *debug_hbqinfo;
struct dentry *debug_dumpslim;
struct dentry *debug_slow_ring_trc;
struct lpfc_debugfs_trc *slow_ring_trc;
atomic_t slow_ring_trc_cnt;
#endif
/* Fields used for heart beat. */
unsigned long last_completion_time;
struct timer_list hb_tmofunc;
uint8_t hb_outstanding;
};
static inline struct Scsi_Host *
lpfc_shost_from_vport(struct lpfc_vport *vport)
{
return container_of((void *) vport, struct Scsi_Host, hostdata[0]);
}
static inline void
lpfc_set_loopback_flag(struct lpfc_hba *phba)
{
if (phba->cfg_topology == FLAGS_LOCAL_LB)
phba->link_flag |= LS_LOOPBACK_MODE;
else
phba->link_flag &= ~LS_LOOPBACK_MODE;
}
static inline int
lpfc_is_link_up(struct lpfc_hba *phba)
{
return phba->link_state == LPFC_LINK_UP ||
phba->link_state == LPFC_CLEAR_LA ||
phba->link_state == LPFC_HBA_READY;
}
#define FC_REG_DUMP_EVENT 0x10 /* Register for Dump events */
