mirror of
https://github.com/torvalds/linux.git
synced 2024-12-15 07:33:56 +00:00
9f49d3b05f
Fix memory leak and cleanup code related to per ring lookup array. Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
214 lines
8.1 KiB
C
214 lines
8.1 KiB
C
/*******************************************************************
|
|
* This file is part of the Emulex Linux Device Driver for *
|
|
* Fibre Channel Host Bus Adapters. *
|
|
* Copyright (C) 2004-2006 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;
|
|
|
|
/* 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;
|
|
uint16_t iotag; /* pre-assigned IO tag */
|
|
uint16_t rsvd1;
|
|
|
|
IOCB_t iocb; /* IOCB cmd */
|
|
uint8_t retry; /* retry counter for IOCB cmd - if needed */
|
|
uint8_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 */
|
|
|
|
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 *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 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 */
|
|
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 */
|
|
|
|
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 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 */
|
|
|
|
#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 */
|
|
};
|
|
|
|
/* 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 */
|