4457 lines
110 KiB
C
4457 lines
110 KiB
C
/*
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* QLOGIC LINUX SOFTWARE
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*
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* QLogic ISP2x00 device driver for Linux 2.6.x
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* Copyright (C) 2003-2004 QLogic Corporation
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* (www.qlogic.com)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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*/
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#include "qla_def.h"
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#include <linux/moduleparam.h>
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#include <linux/vmalloc.h>
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#include <linux/smp_lock.h>
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#include <linux/delay.h>
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#include <scsi/scsi_tcq.h>
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#include <scsi/scsicam.h>
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#include <scsi/scsi_transport.h>
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#include <scsi/scsi_transport_fc.h>
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/*
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* Driver version
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*/
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char qla2x00_version_str[40];
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/*
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* SRB allocation cache
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*/
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char srb_cachep_name[16];
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kmem_cache_t *srb_cachep;
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/*
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* Stats for all adpaters.
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*/
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struct _qla2x00stats qla2x00_stats;
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/*
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* Ioctl related information.
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*/
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int num_hosts;
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int apiHBAInstance;
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/*
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* Module parameter information and variables
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*/
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int ql2xmaxqdepth;
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module_param(ql2xmaxqdepth, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(ql2xmaxqdepth,
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"Maximum queue depth to report for target devices.");
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int ql2xlogintimeout = 20;
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module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
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MODULE_PARM_DESC(ql2xlogintimeout,
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"Login timeout value in seconds.");
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int qlport_down_retry;
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module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
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MODULE_PARM_DESC(qlport_down_retry,
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"Maximum number of command retries to a port that returns"
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"a PORT-DOWN status.");
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int ql2xretrycount = 20;
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module_param(ql2xretrycount, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(ql2xretrycount,
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"Maximum number of mid-layer retries allowed for a command. "
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"Default value is 20, ");
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int displayConfig;
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module_param(displayConfig, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(displayConfig,
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"If 1 then display the configuration used in /etc/modprobe.conf.");
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int ql2xplogiabsentdevice;
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module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(ql2xplogiabsentdevice,
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"Option to enable PLOGI to devices that are not present after "
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"a Fabric scan. This is needed for several broken switches."
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"Default is 0 - no PLOGI. 1 - perfom PLOGI.");
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int ql2xenablezio = 0;
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module_param(ql2xenablezio, int, S_IRUGO|S_IRUSR);
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MODULE_PARM_DESC(ql2xenablezio,
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"Option to enable ZIO:If 1 then enable it otherwise"
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" use the default set in the NVRAM."
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" Default is 0 : disabled");
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int ql2xintrdelaytimer = 10;
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module_param(ql2xintrdelaytimer, int, S_IRUGO|S_IRUSR);
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MODULE_PARM_DESC(ql2xintrdelaytimer,
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"ZIO: Waiting time for Firmware before it generates an "
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"interrupt to the host to notify completion of request.");
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int ConfigRequired;
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module_param(ConfigRequired, int, S_IRUGO|S_IRUSR);
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MODULE_PARM_DESC(ConfigRequired,
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"If 1, then only configured devices passed in through the"
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"ql2xopts parameter will be presented to the OS");
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int Bind = BIND_BY_PORT_NAME;
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module_param(Bind, int, S_IRUGO|S_IRUSR);
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MODULE_PARM_DESC(Bind,
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"Target persistent binding method: "
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"0 by Portname (default); 1 by PortID; 2 by Nodename. ");
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int ql2xsuspendcount = SUSPEND_COUNT;
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module_param(ql2xsuspendcount, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(ql2xsuspendcount,
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"Number of 6-second suspend iterations to perform while a "
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"target returns a <NOT READY> status. Default is 10 "
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"iterations.");
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int ql2xdoinitscan = 1;
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module_param(ql2xdoinitscan, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(ql2xdoinitscan,
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"Signal mid-layer to perform scan after driver load: 0 -- no "
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"signal sent to mid-layer.");
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int ql2xloginretrycount = 0;
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module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
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MODULE_PARM_DESC(ql2xloginretrycount,
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"Specify an alternate value for the NVRAM login retry count.");
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/*
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* Proc structures and functions
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*/
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struct info_str {
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char *buffer;
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int length;
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off_t offset;
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int pos;
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};
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static void copy_mem_info(struct info_str *, char *, int);
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static int copy_info(struct info_str *, char *, ...);
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static void qla2x00_free_device(scsi_qla_host_t *);
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static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
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/*
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* SCSI host template entry points
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*/
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static int qla2xxx_slave_configure(struct scsi_device * device);
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static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
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void (*fn)(struct scsi_cmnd *));
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static int qla2xxx_eh_abort(struct scsi_cmnd *);
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static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
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static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
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static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
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static int qla2x00_loop_reset(scsi_qla_host_t *ha);
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static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
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static int qla2x00_proc_info(struct Scsi_Host *, char *, char **,
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off_t, int, int);
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static struct scsi_host_template qla2x00_driver_template = {
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.module = THIS_MODULE,
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.name = "qla2xxx",
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.proc_name = "qla2xxx",
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.proc_info = qla2x00_proc_info,
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.queuecommand = qla2x00_queuecommand,
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.eh_abort_handler = qla2xxx_eh_abort,
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.eh_device_reset_handler = qla2xxx_eh_device_reset,
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.eh_bus_reset_handler = qla2xxx_eh_bus_reset,
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.eh_host_reset_handler = qla2xxx_eh_host_reset,
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.slave_configure = qla2xxx_slave_configure,
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.this_id = -1,
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.cmd_per_lun = 3,
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.use_clustering = ENABLE_CLUSTERING,
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.sg_tablesize = SG_ALL,
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/*
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* The RISC allows for each command to transfer (2^32-1) bytes of data,
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* which equates to 0x800000 sectors.
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*/
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.max_sectors = 0xFFFF,
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};
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static struct scsi_transport_template *qla2xxx_transport_template = NULL;
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static void qla2x00_display_fc_names(scsi_qla_host_t *);
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/* TODO Convert to inlines
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*
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* Timer routines
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*/
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#define WATCH_INTERVAL 1 /* number of seconds */
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static void qla2x00_timer(scsi_qla_host_t *);
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static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
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void *, unsigned long);
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static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
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static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
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static inline void
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qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
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{
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init_timer(&ha->timer);
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ha->timer.expires = jiffies + interval * HZ;
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ha->timer.data = (unsigned long)ha;
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ha->timer.function = (void (*)(unsigned long))func;
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add_timer(&ha->timer);
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ha->timer_active = 1;
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}
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static inline void
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qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
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{
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mod_timer(&ha->timer, jiffies + interval * HZ);
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}
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static __inline__ void
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qla2x00_stop_timer(scsi_qla_host_t *ha)
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{
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del_timer_sync(&ha->timer);
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ha->timer_active = 0;
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}
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void qla2x00_cmd_timeout(srb_t *);
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static __inline__ void qla2x00_callback(scsi_qla_host_t *, struct scsi_cmnd *);
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static __inline__ void sp_put(struct scsi_qla_host * ha, srb_t *sp);
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static __inline__ void sp_get(struct scsi_qla_host * ha, srb_t *sp);
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static __inline__ void
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qla2x00_delete_from_done_queue(scsi_qla_host_t *, srb_t *);
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/*
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* qla2x00_callback
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* Returns the completed SCSI command to LINUX.
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*
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* Input:
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* ha -- Host adapter structure
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* cmd -- SCSI mid-level command structure.
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* Returns:
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* None
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* Note:From failover point of view we always get the sp
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* from vis_ha pool in queuecommand.So when we put it
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* back to the pool it has to be the vis_ha.
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* So rely on struct scsi_cmnd to get the vis_ha and not on sp.
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*/
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static inline void
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qla2x00_callback(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
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{
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srb_t *sp = (srb_t *) CMD_SP(cmd);
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scsi_qla_host_t *vis_ha;
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os_lun_t *lq;
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int got_sense;
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unsigned long cpu_flags = 0;
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cmd->host_scribble = (unsigned char *) NULL;
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vis_ha = (scsi_qla_host_t *) cmd->device->host->hostdata;
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if (sp == NULL) {
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qla_printk(KERN_INFO, ha,
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"%s(): **** CMD derives a NULL SP\n",
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__func__);
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DEBUG2(BUG();)
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return;
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}
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/*
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* If command status is not DID_BUS_BUSY then go ahead and freed sp.
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*/
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/*
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* Cancel command timeout
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*/
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qla2x00_delete_timer_from_cmd(sp);
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/*
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* Put SP back in the free queue
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*/
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sp->cmd = NULL;
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CMD_SP(cmd) = NULL;
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lq = sp->lun_queue;
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got_sense = (sp->flags & SRB_GOT_SENSE)? 1: 0;
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add_to_free_queue(vis_ha, sp);
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if (host_byte(cmd->result) == DID_OK) {
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/* device ok */
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ha->total_bytes += cmd->bufflen;
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if (!got_sense) {
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/* If lun was suspended then clear retry count */
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spin_lock_irqsave(&lq->q_lock, cpu_flags);
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if (!test_bit(LUN_EXEC_DELAYED, &lq->q_flag))
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lq->q_state = LUN_STATE_READY;
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spin_unlock_irqrestore(&lq->q_lock, cpu_flags);
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}
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} else if (host_byte(cmd->result) == DID_ERROR) {
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/* device error */
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ha->total_dev_errs++;
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}
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/* Call the mid-level driver interrupt handler */
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(*(cmd)->scsi_done)(cmd);
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}
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/**************************************************************************
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* sp_put
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*
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* Description:
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* Decrement reference count and call the callback if we're the last
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* owner of the specified sp. Will get the host_lock before calling
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* the callback.
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*
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* Input:
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* ha - pointer to the scsi_qla_host_t where the callback is to occur.
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* sp - pointer to srb_t structure to use.
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*
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* Returns:
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*
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**************************************************************************/
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static inline void
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sp_put(struct scsi_qla_host * ha, srb_t *sp)
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{
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if (atomic_read(&sp->ref_count) == 0) {
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qla_printk(KERN_INFO, ha,
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"%s(): **** SP->ref_count not zero\n",
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__func__);
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DEBUG2(BUG();)
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return;
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}
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if (!atomic_dec_and_test(&sp->ref_count)) {
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return;
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}
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qla2x00_callback(ha, sp->cmd);
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}
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/**************************************************************************
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* sp_get
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*
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* Description:
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* Increment reference count of the specified sp.
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*
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* Input:
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* sp - pointer to srb_t structure to use.
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*
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* Returns:
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*
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**************************************************************************/
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static inline void
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sp_get(struct scsi_qla_host * ha, srb_t *sp)
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{
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atomic_inc(&sp->ref_count);
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if (atomic_read(&sp->ref_count) > 2) {
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qla_printk(KERN_INFO, ha,
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"%s(): **** SP->ref_count greater than two\n",
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__func__);
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DEBUG2(BUG();)
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return;
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}
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}
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static inline void
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qla2x00_delete_from_done_queue(scsi_qla_host_t *dest_ha, srb_t *sp)
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{
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/* remove command from done list */
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list_del_init(&sp->list);
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dest_ha->done_q_cnt--;
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sp->state = SRB_NO_QUEUE_STATE;
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if (sp->flags & SRB_DMA_VALID) {
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sp->flags &= ~SRB_DMA_VALID;
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/* Release memory used for this I/O */
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if (sp->cmd->use_sg) {
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pci_unmap_sg(dest_ha->pdev, sp->cmd->request_buffer,
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sp->cmd->use_sg, sp->cmd->sc_data_direction);
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} else if (sp->cmd->request_bufflen) {
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pci_unmap_page(dest_ha->pdev, sp->dma_handle,
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sp->cmd->request_bufflen,
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sp->cmd->sc_data_direction);
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}
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}
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}
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static int qla2x00_do_dpc(void *data);
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static void qla2x00_rst_aen(scsi_qla_host_t *);
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static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
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static void qla2x00_mem_free(scsi_qla_host_t *ha);
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static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
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static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
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static srb_t *qla2x00_get_new_sp(scsi_qla_host_t *ha);
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static ssize_t qla2x00_sysfs_read_fw_dump(struct kobject *, char *, loff_t,
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size_t);
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static ssize_t qla2x00_sysfs_write_fw_dump(struct kobject *, char *, loff_t,
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size_t);
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static struct bin_attribute sysfs_fw_dump_attr = {
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.attr = {
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.name = "fw_dump",
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.mode = S_IRUSR | S_IWUSR,
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.owner = THIS_MODULE,
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},
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.size = 0,
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.read = qla2x00_sysfs_read_fw_dump,
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.write = qla2x00_sysfs_write_fw_dump,
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};
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static ssize_t qla2x00_sysfs_read_nvram(struct kobject *, char *, loff_t,
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size_t);
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static ssize_t qla2x00_sysfs_write_nvram(struct kobject *, char *, loff_t,
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size_t);
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static struct bin_attribute sysfs_nvram_attr = {
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.attr = {
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.name = "nvram",
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.mode = S_IRUSR | S_IWUSR,
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.owner = THIS_MODULE,
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},
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.size = sizeof(nvram_t),
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.read = qla2x00_sysfs_read_nvram,
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.write = qla2x00_sysfs_write_nvram,
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};
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/* -------------------------------------------------------------------------- */
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/* SysFS attributes. */
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static ssize_t qla2x00_sysfs_read_fw_dump(struct kobject *kobj, char *buf,
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loff_t off, size_t count)
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{
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struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
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struct device, kobj)));
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if (ha->fw_dump_reading == 0)
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return 0;
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if (off > ha->fw_dump_buffer_len)
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return 0;
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if (off + count > ha->fw_dump_buffer_len)
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count = ha->fw_dump_buffer_len - off;
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memcpy(buf, &ha->fw_dump_buffer[off], count);
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return (count);
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}
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static ssize_t qla2x00_sysfs_write_fw_dump(struct kobject *kobj, char *buf,
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loff_t off, size_t count)
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{
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struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
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struct device, kobj)));
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int reading;
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uint32_t dump_size;
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if (off != 0)
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return (0);
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reading = simple_strtol(buf, NULL, 10);
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switch (reading) {
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case 0:
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if (ha->fw_dump_reading == 1) {
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qla_printk(KERN_INFO, ha,
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"Firmware dump cleared on (%ld).\n",
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ha->host_no);
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vfree(ha->fw_dump_buffer);
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free_pages((unsigned long)ha->fw_dump,
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ha->fw_dump_order);
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ha->fw_dump_reading = 0;
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ha->fw_dump_buffer = NULL;
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ha->fw_dump = NULL;
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}
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break;
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case 1:
|
|
if (ha->fw_dump != NULL && !ha->fw_dump_reading) {
|
|
ha->fw_dump_reading = 1;
|
|
|
|
dump_size = FW_DUMP_SIZE_1M;
|
|
if (ha->fw_memory_size < 0x20000)
|
|
dump_size = FW_DUMP_SIZE_128K;
|
|
else if (ha->fw_memory_size < 0x80000)
|
|
dump_size = FW_DUMP_SIZE_512K;
|
|
ha->fw_dump_buffer = (char *)vmalloc(dump_size);
|
|
if (ha->fw_dump_buffer == NULL) {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Unable to allocate memory for firmware "
|
|
"dump buffer (%d).\n", dump_size);
|
|
|
|
ha->fw_dump_reading = 0;
|
|
return (count);
|
|
}
|
|
qla_printk(KERN_INFO, ha,
|
|
"Firmware dump ready for read on (%ld).\n",
|
|
ha->host_no);
|
|
memset(ha->fw_dump_buffer, 0, dump_size);
|
|
if (IS_QLA2100(ha) || IS_QLA2200(ha))
|
|
qla2100_ascii_fw_dump(ha);
|
|
else
|
|
qla2300_ascii_fw_dump(ha);
|
|
ha->fw_dump_buffer_len = strlen(ha->fw_dump_buffer);
|
|
}
|
|
break;
|
|
}
|
|
return (count);
|
|
}
|
|
|
|
static ssize_t qla2x00_sysfs_read_nvram(struct kobject *kobj, char *buf,
|
|
loff_t off, size_t count)
|
|
{
|
|
struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
|
|
struct device, kobj)));
|
|
uint16_t *witer;
|
|
unsigned long flags;
|
|
uint16_t cnt;
|
|
|
|
if (!capable(CAP_SYS_ADMIN) || off != 0 || count != sizeof(nvram_t))
|
|
return 0;
|
|
|
|
/* Read NVRAM. */
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
qla2x00_lock_nvram_access(ha);
|
|
witer = (uint16_t *)buf;
|
|
for (cnt = 0; cnt < count / 2; cnt++) {
|
|
*witer = cpu_to_le16(qla2x00_get_nvram_word(ha,
|
|
cnt+ha->nvram_base));
|
|
witer++;
|
|
}
|
|
qla2x00_unlock_nvram_access(ha);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
return (count);
|
|
}
|
|
|
|
static ssize_t qla2x00_sysfs_write_nvram(struct kobject *kobj, char *buf,
|
|
loff_t off, size_t count)
|
|
{
|
|
struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
|
|
struct device, kobj)));
|
|
uint8_t *iter;
|
|
uint16_t *witer;
|
|
unsigned long flags;
|
|
uint16_t cnt;
|
|
uint8_t chksum;
|
|
|
|
if (!capable(CAP_SYS_ADMIN) || off != 0 || count != sizeof(nvram_t))
|
|
return 0;
|
|
|
|
/* Checksum NVRAM. */
|
|
iter = (uint8_t *)buf;
|
|
chksum = 0;
|
|
for (cnt = 0; cnt < count - 1; cnt++)
|
|
chksum += *iter++;
|
|
chksum = ~chksum + 1;
|
|
*iter = chksum;
|
|
|
|
/* Write NVRAM. */
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
qla2x00_lock_nvram_access(ha);
|
|
qla2x00_release_nvram_protection(ha);
|
|
witer = (uint16_t *)buf;
|
|
for (cnt = 0; cnt < count / 2; cnt++) {
|
|
qla2x00_write_nvram_word(ha, cnt+ha->nvram_base,
|
|
cpu_to_le16(*witer));
|
|
witer++;
|
|
}
|
|
qla2x00_unlock_nvram_access(ha);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
return (count);
|
|
}
|
|
|
|
/* -------------------------------------------------------------------------- */
|
|
static char *
|
|
qla2x00_get_pci_info_str(struct scsi_qla_host *ha, char *str)
|
|
{
|
|
static char *pci_bus_modes[] = {
|
|
"33", "66", "100", "133",
|
|
};
|
|
uint16_t pci_bus;
|
|
|
|
strcpy(str, "PCI");
|
|
pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
|
|
if (pci_bus) {
|
|
strcat(str, "-X (");
|
|
strcat(str, pci_bus_modes[pci_bus]);
|
|
} else {
|
|
pci_bus = (ha->pci_attr & BIT_8) >> 8;
|
|
strcat(str, " (");
|
|
strcat(str, pci_bus_modes[pci_bus]);
|
|
}
|
|
strcat(str, " MHz)");
|
|
|
|
return (str);
|
|
}
|
|
|
|
char *
|
|
qla2x00_get_fw_version_str(struct scsi_qla_host *ha, char *str)
|
|
{
|
|
char un_str[10];
|
|
|
|
sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
|
|
ha->fw_minor_version,
|
|
ha->fw_subminor_version);
|
|
|
|
if (ha->fw_attributes & BIT_9) {
|
|
strcat(str, "FLX");
|
|
return (str);
|
|
}
|
|
|
|
switch (ha->fw_attributes & 0xFF) {
|
|
case 0x7:
|
|
strcat(str, "EF");
|
|
break;
|
|
case 0x17:
|
|
strcat(str, "TP");
|
|
break;
|
|
case 0x37:
|
|
strcat(str, "IP");
|
|
break;
|
|
case 0x77:
|
|
strcat(str, "VI");
|
|
break;
|
|
default:
|
|
sprintf(un_str, "(%x)", ha->fw_attributes);
|
|
strcat(str, un_str);
|
|
break;
|
|
}
|
|
if (ha->fw_attributes & 0x100)
|
|
strcat(str, "X");
|
|
|
|
return (str);
|
|
}
|
|
|
|
/**************************************************************************
|
|
* qla2x00_queuecommand
|
|
*
|
|
* Description:
|
|
* Queue a command to the controller.
|
|
*
|
|
* Input:
|
|
* cmd - pointer to Scsi cmd structure
|
|
* fn - pointer to Scsi done function
|
|
*
|
|
* Returns:
|
|
* 0 - Always
|
|
*
|
|
* Note:
|
|
* The mid-level driver tries to ensures that queuecommand never gets invoked
|
|
* concurrently with itself or the interrupt handler (although the
|
|
* interrupt handler may call this routine as part of request-completion
|
|
* handling).
|
|
**************************************************************************/
|
|
static int
|
|
qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*fn)(struct scsi_cmnd *))
|
|
{
|
|
fc_port_t *fcport;
|
|
os_lun_t *lq;
|
|
os_tgt_t *tq;
|
|
scsi_qla_host_t *ha, *ha2;
|
|
srb_t *sp;
|
|
struct Scsi_Host *host;
|
|
unsigned int b, t, l;
|
|
unsigned long handle;
|
|
int was_empty;
|
|
|
|
|
|
host = cmd->device->host;
|
|
ha = (scsi_qla_host_t *) host->hostdata;
|
|
was_empty = 1;
|
|
|
|
cmd->scsi_done = fn;
|
|
|
|
spin_unlock_irq(ha->host->host_lock);
|
|
|
|
/*
|
|
* Allocate a command packet from the "sp" pool. If we cant get back
|
|
* one then let scsi layer come back later.
|
|
*/
|
|
if ((sp = qla2x00_get_new_sp(ha)) == NULL) {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Couldn't allocate memory for sp - retried.\n");
|
|
|
|
spin_lock_irq(ha->host->host_lock);
|
|
|
|
return (1);
|
|
}
|
|
|
|
sp->cmd = cmd;
|
|
CMD_SP(cmd) = (void *)sp;
|
|
|
|
sp->flags = 0;
|
|
if (CMD_RESID_LEN(cmd) & SRB_IOCTL) {
|
|
/* Need to set sp->flags */
|
|
sp->flags |= SRB_IOCTL;
|
|
CMD_RESID_LEN(cmd) = 0; /* Clear it since no more use. */
|
|
}
|
|
|
|
sp->fo_retry_cnt = 0;
|
|
sp->err_id = 0;
|
|
|
|
/* Generate LU queue on bus, target, LUN */
|
|
b = cmd->device->channel;
|
|
t = cmd->device->id;
|
|
l = cmd->device->lun;
|
|
|
|
/*
|
|
* Start Command Timer. Typically it will be 2 seconds less than what
|
|
* is requested by the Host such that we can return the IO before
|
|
* aborts are called.
|
|
*/
|
|
if ((cmd->timeout_per_command / HZ) > QLA_CMD_TIMER_DELTA)
|
|
qla2x00_add_timer_to_cmd(sp,
|
|
(cmd->timeout_per_command / HZ) - QLA_CMD_TIMER_DELTA);
|
|
else
|
|
qla2x00_add_timer_to_cmd(sp, cmd->timeout_per_command / HZ);
|
|
|
|
if (l >= ha->max_luns) {
|
|
cmd->result = DID_NO_CONNECT << 16;
|
|
sp->err_id = SRB_ERR_PORT;
|
|
|
|
spin_lock_irq(ha->host->host_lock);
|
|
|
|
sp_put(ha, sp);
|
|
|
|
return (0);
|
|
}
|
|
|
|
if ((tq = (os_tgt_t *) TGT_Q(ha, t)) != NULL &&
|
|
(lq = (os_lun_t *) LUN_Q(ha, t, l)) != NULL) {
|
|
fcport = lq->fclun->fcport;
|
|
ha2 = fcport->ha;
|
|
} else {
|
|
lq = NULL;
|
|
fcport = NULL;
|
|
ha2 = ha;
|
|
}
|
|
|
|
/* Set an invalid handle until we issue the command to ISP */
|
|
/* then we will set the real handle value. */
|
|
handle = INVALID_HANDLE;
|
|
cmd->host_scribble = (unsigned char *)handle;
|
|
|
|
/* Bookkeeping information */
|
|
sp->r_start = jiffies; /* Time the request was recieved. */
|
|
sp->u_start = 0;
|
|
|
|
/* Setup device queue pointers. */
|
|
sp->tgt_queue = tq;
|
|
sp->lun_queue = lq;
|
|
|
|
/*
|
|
* NOTE : q is NULL
|
|
*
|
|
* 1. When device is added from persistent binding but has not been
|
|
* discovered yet.The state of loopid == PORT_AVAIL.
|
|
* 2. When device is never found on the bus.(loopid == UNUSED)
|
|
*
|
|
* IF Device Queue is not created, or device is not in a valid state
|
|
* and link down error reporting is enabled, reject IO.
|
|
*/
|
|
if (fcport == NULL) {
|
|
DEBUG3(printk("scsi(%ld:%2d:%2d): port unavailable\n",
|
|
ha->host_no,t,l));
|
|
|
|
cmd->result = DID_NO_CONNECT << 16;
|
|
sp->err_id = SRB_ERR_PORT;
|
|
|
|
spin_lock_irq(ha->host->host_lock);
|
|
|
|
sp_put(ha, sp);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* Only modify the allowed count if the target is a *non* tape device */
|
|
if ((fcport->flags & FCF_TAPE_PRESENT) == 0) {
|
|
sp->flags &= ~SRB_TAPE;
|
|
if (cmd->allowed < ql2xretrycount) {
|
|
cmd->allowed = ql2xretrycount;
|
|
}
|
|
} else
|
|
sp->flags |= SRB_TAPE;
|
|
|
|
DEBUG5(printk("scsi(%ld:%2d:%2d): (queuecmd) queue sp = %p, "
|
|
"flags=0x%x fo retry=%d, pid=%ld\n",
|
|
ha->host_no, t, l, sp, sp->flags, sp->fo_retry_cnt,
|
|
cmd->serial_number));
|
|
DEBUG5(qla2x00_print_scsi_cmd(cmd));
|
|
|
|
sp->fclun = lq->fclun;
|
|
sp->ha = ha2;
|
|
|
|
if (cmd->sc_data_direction == DMA_BIDIRECTIONAL &&
|
|
cmd->request_bufflen != 0) {
|
|
|
|
DEBUG2(printk(KERN_WARNING
|
|
"scsi(%ld): Incorrect data direction - transfer "
|
|
"length=%d, direction=%d, pid=%ld, opcode=%x\n",
|
|
ha->host_no, cmd->request_bufflen, cmd->sc_data_direction,
|
|
cmd->serial_number, cmd->cmnd[0]));
|
|
}
|
|
|
|
/* Final pre-check :
|
|
*
|
|
* Either PORT_DOWN_TIMER OR LINK_DOWN_TIMER Expired.
|
|
*/
|
|
if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
|
|
atomic_read(&ha2->loop_state) == LOOP_DEAD) {
|
|
/*
|
|
* Add the command to the done-queue for later failover
|
|
* processing.
|
|
*/
|
|
cmd->result = DID_NO_CONNECT << 16;
|
|
if (atomic_read(&ha2->loop_state) == LOOP_DOWN)
|
|
sp->err_id = SRB_ERR_LOOP;
|
|
else
|
|
sp->err_id = SRB_ERR_PORT;
|
|
|
|
add_to_done_queue(ha, sp);
|
|
qla2x00_done(ha);
|
|
|
|
spin_lock_irq(ha->host->host_lock);
|
|
return (0);
|
|
}
|
|
|
|
if (tq && test_bit(TQF_SUSPENDED, &tq->flags) &&
|
|
(sp->flags & SRB_TAPE) == 0) {
|
|
/* If target suspended put incoming I/O in retry_q. */
|
|
qla2x00_extend_timeout(sp->cmd, 10);
|
|
add_to_scsi_retry_queue(ha, sp);
|
|
} else
|
|
was_empty = add_to_pending_queue(ha, sp);
|
|
|
|
if ((IS_QLA2100(ha) || IS_QLA2200(ha)) && ha->flags.online) {
|
|
if (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
qla2x00_process_response_queue(ha);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
}
|
|
}
|
|
|
|
/* We submit to the hardware if:
|
|
*
|
|
* 1) we're on the cpu the irq's arrive on or
|
|
* 2) there are very few io's outstanding.
|
|
*
|
|
* In all other cases we'll let an irq pick up our IO and submit it
|
|
* to the controller to improve affinity.
|
|
*/
|
|
if (_smp_processor_id() == ha->last_irq_cpu || was_empty)
|
|
qla2x00_next(ha);
|
|
|
|
spin_lock_irq(ha->host->host_lock);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* qla2x00_eh_wait_on_command
|
|
* Waits for the command to be returned by the Firmware for some
|
|
* max time.
|
|
*
|
|
* Input:
|
|
* ha = actual ha whose done queue will contain the command
|
|
* returned by firmware.
|
|
* cmd = Scsi Command to wait on.
|
|
* flag = Abort/Reset(Bus or Device Reset)
|
|
*
|
|
* Return:
|
|
* Not Found : 0
|
|
* Found : 1
|
|
*/
|
|
static int
|
|
qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
|
|
{
|
|
#define ABORT_POLLING_PERIOD HZ
|
|
#define ABORT_WAIT_TIME ((10 * HZ) / (ABORT_POLLING_PERIOD))
|
|
|
|
int found = 0;
|
|
int done = 0;
|
|
srb_t *rp = NULL;
|
|
struct list_head *list, *temp;
|
|
u_long max_wait_time = ABORT_WAIT_TIME;
|
|
|
|
do {
|
|
/* Check on done queue */
|
|
spin_lock(&ha->list_lock);
|
|
list_for_each_safe(list, temp, &ha->done_queue) {
|
|
rp = list_entry(list, srb_t, list);
|
|
|
|
/*
|
|
* Found command. Just exit and wait for the cmd sent
|
|
* to OS.
|
|
*/
|
|
if (cmd == rp->cmd) {
|
|
found++;
|
|
DEBUG3(printk("%s: found in done queue.\n",
|
|
__func__);)
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock(&ha->list_lock);
|
|
|
|
/* Complete the cmd right away. */
|
|
if (found) {
|
|
qla2x00_delete_from_done_queue(ha, rp);
|
|
sp_put(ha, rp);
|
|
done++;
|
|
break;
|
|
}
|
|
|
|
spin_unlock_irq(ha->host->host_lock);
|
|
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout(ABORT_POLLING_PERIOD);
|
|
|
|
spin_lock_irq(ha->host->host_lock);
|
|
|
|
} while ((max_wait_time--));
|
|
|
|
if (done)
|
|
DEBUG2(printk(KERN_INFO "%s: found cmd=%p.\n", __func__, cmd));
|
|
|
|
return (done);
|
|
}
|
|
|
|
/*
|
|
* qla2x00_wait_for_hba_online
|
|
* Wait till the HBA is online after going through
|
|
* <= MAX_RETRIES_OF_ISP_ABORT or
|
|
* finally HBA is disabled ie marked offline
|
|
*
|
|
* Input:
|
|
* ha - pointer to host adapter structure
|
|
*
|
|
* Note:
|
|
* Does context switching-Release SPIN_LOCK
|
|
* (if any) before calling this routine.
|
|
*
|
|
* Return:
|
|
* Success (Adapter is online) : 0
|
|
* Failed (Adapter is offline/disabled) : 1
|
|
*/
|
|
static int
|
|
qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
|
|
{
|
|
int return_status;
|
|
unsigned long wait_online;
|
|
|
|
wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
|
|
while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
|
|
test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
|
|
test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
|
|
ha->dpc_active) && time_before(jiffies, wait_online)) {
|
|
|
|
msleep(1000);
|
|
}
|
|
if (ha->flags.online)
|
|
return_status = QLA_SUCCESS;
|
|
else
|
|
return_status = QLA_FUNCTION_FAILED;
|
|
|
|
DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
|
|
|
|
return (return_status);
|
|
}
|
|
|
|
/*
|
|
* qla2x00_wait_for_loop_ready
|
|
* Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
|
|
* to be in LOOP_READY state.
|
|
* Input:
|
|
* ha - pointer to host adapter structure
|
|
*
|
|
* Note:
|
|
* Does context switching-Release SPIN_LOCK
|
|
* (if any) before calling this routine.
|
|
*
|
|
*
|
|
* Return:
|
|
* Success (LOOP_READY) : 0
|
|
* Failed (LOOP_NOT_READY) : 1
|
|
*/
|
|
static inline int
|
|
qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
|
|
{
|
|
int return_status = QLA_SUCCESS;
|
|
unsigned long loop_timeout ;
|
|
|
|
/* wait for 5 min at the max for loop to be ready */
|
|
loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
|
|
|
|
while ((!atomic_read(&ha->loop_down_timer) &&
|
|
atomic_read(&ha->loop_state) == LOOP_DOWN) ||
|
|
test_bit(CFG_ACTIVE, &ha->cfg_flags) ||
|
|
atomic_read(&ha->loop_state) != LOOP_READY) {
|
|
msleep(1000);
|
|
if (time_after_eq(jiffies, loop_timeout)) {
|
|
return_status = QLA_FUNCTION_FAILED;
|
|
break;
|
|
}
|
|
}
|
|
return (return_status);
|
|
}
|
|
|
|
/**************************************************************************
|
|
* qla2xxx_eh_abort
|
|
*
|
|
* Description:
|
|
* The abort function will abort the specified command.
|
|
*
|
|
* Input:
|
|
* cmd = Linux SCSI command packet to be aborted.
|
|
*
|
|
* Returns:
|
|
* Either SUCCESS or FAILED.
|
|
*
|
|
* Note:
|
|
**************************************************************************/
|
|
int
|
|
qla2xxx_eh_abort(struct scsi_cmnd *cmd)
|
|
{
|
|
int i;
|
|
int return_status = FAILED;
|
|
os_lun_t *q;
|
|
scsi_qla_host_t *ha;
|
|
scsi_qla_host_t *vis_ha;
|
|
srb_t *sp;
|
|
srb_t *rp;
|
|
struct list_head *list, *temp;
|
|
struct Scsi_Host *host;
|
|
uint8_t found = 0;
|
|
unsigned int b, t, l;
|
|
|
|
/* Get the SCSI request ptr */
|
|
sp = (srb_t *) CMD_SP(cmd);
|
|
|
|
/*
|
|
* If sp is NULL, command is already returned.
|
|
* sp is NULLED just before we call back scsi_done
|
|
*
|
|
*/
|
|
if ((sp == NULL)) {
|
|
/* no action - we don't have command */
|
|
qla_printk(KERN_INFO, to_qla_host(cmd->device->host),
|
|
"qla2xxx_eh_abort: cmd already done sp=%p\n", sp);
|
|
DEBUG(printk("qla2xxx_eh_abort: cmd already done sp=%p\n", sp);)
|
|
return SUCCESS;
|
|
}
|
|
if (sp) {
|
|
DEBUG(printk("qla2xxx_eh_abort: refcount %i \n",
|
|
atomic_read(&sp->ref_count));)
|
|
}
|
|
|
|
vis_ha = (scsi_qla_host_t *) cmd->device->host->hostdata;
|
|
ha = (scsi_qla_host_t *)cmd->device->host->hostdata;
|
|
|
|
host = ha->host;
|
|
|
|
/* Generate LU queue on bus, target, LUN */
|
|
b = cmd->device->channel;
|
|
t = cmd->device->id;
|
|
l = cmd->device->lun;
|
|
q = GET_LU_Q(vis_ha, t, l);
|
|
|
|
qla_printk(KERN_INFO, ha,
|
|
"%s scsi(%ld:%d:%d:%d): cmd_timeout_in_sec=0x%x.\n", __func__,
|
|
ha->host_no, (int)b, (int)t, (int)l,
|
|
cmd->timeout_per_command / HZ);
|
|
|
|
/*
|
|
* if no LUN queue then something is very wrong!!!
|
|
*/
|
|
if (q == NULL) {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"qla2x00: (%x:%x:%x) No LUN queue.\n", b, t, l);
|
|
|
|
/* no action - we don't have command */
|
|
return FAILED;
|
|
}
|
|
|
|
DEBUG2(printk("scsi(%ld): ABORTing cmd=%p sp=%p jiffies = 0x%lx, "
|
|
"timeout=%x, dpc_flags=%lx, vis_ha->dpc_flags=%lx q->flag=%lx\n",
|
|
ha->host_no, cmd, sp, jiffies, cmd->timeout_per_command / HZ,
|
|
ha->dpc_flags, vis_ha->dpc_flags, q->q_flag));
|
|
DEBUG2(qla2x00_print_scsi_cmd(cmd));
|
|
|
|
spin_unlock_irq(ha->host->host_lock);
|
|
if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
|
|
DEBUG2(printk("%s failed:board disabled\n", __func__);)
|
|
spin_lock_irq(ha->host->host_lock);
|
|
return FAILED;
|
|
}
|
|
spin_lock_irq(ha->host->host_lock);
|
|
|
|
/* Search done queue */
|
|
spin_lock(&ha->list_lock);
|
|
list_for_each_safe(list, temp, &ha->done_queue) {
|
|
rp = list_entry(list, srb_t, list);
|
|
|
|
if (cmd != rp->cmd)
|
|
continue;
|
|
|
|
/*
|
|
* Found command.Remove it from done list.
|
|
* And proceed to post completion to scsi mid layer.
|
|
*/
|
|
return_status = SUCCESS;
|
|
found++;
|
|
qla2x00_delete_from_done_queue(ha, sp);
|
|
|
|
break;
|
|
} /* list_for_each_safe() */
|
|
spin_unlock(&ha->list_lock);
|
|
|
|
/*
|
|
* Return immediately if the aborted command was already in the done
|
|
* queue
|
|
*/
|
|
if (found) {
|
|
qla_printk(KERN_INFO, ha,
|
|
"qla2xxx_eh_abort: Returning completed command=%p sp=%p\n",
|
|
cmd, sp);
|
|
sp_put(ha, sp);
|
|
return (return_status);
|
|
}
|
|
|
|
|
|
/*
|
|
* See if this command is in the retry queue
|
|
*/
|
|
DEBUG3(printk("qla2xxx_eh_abort: searching sp %p in retry "
|
|
"queue.\n", sp);)
|
|
|
|
spin_lock(&ha->list_lock);
|
|
list_for_each_safe(list, temp, &ha->retry_queue) {
|
|
rp = list_entry(list, srb_t, list);
|
|
|
|
if (cmd != rp->cmd)
|
|
continue;
|
|
|
|
|
|
DEBUG2(printk("qla2xxx_eh_abort: found "
|
|
"in retry queue. SP=%p\n", sp);)
|
|
|
|
__del_from_retry_queue(ha, rp);
|
|
cmd->result = DID_ABORT << 16;
|
|
__add_to_done_queue(ha, rp);
|
|
|
|
return_status = SUCCESS;
|
|
found++;
|
|
|
|
break;
|
|
|
|
}
|
|
spin_unlock(&ha->list_lock);
|
|
|
|
|
|
/*
|
|
* Our SP pointer points at the command we want to remove from the
|
|
* pending queue providing we haven't already sent it to the adapter.
|
|
*/
|
|
if (!found) {
|
|
DEBUG3(printk("qla2xxx_eh_abort: searching sp %p "
|
|
"in pending queue.\n", sp);)
|
|
|
|
spin_lock(&vis_ha->list_lock);
|
|
list_for_each_safe(list, temp, &vis_ha->pending_queue) {
|
|
rp = list_entry(list, srb_t, list);
|
|
|
|
if (rp->cmd != cmd)
|
|
continue;
|
|
|
|
/* Remove srb from LUN queue. */
|
|
rp->flags |= SRB_ABORTED;
|
|
|
|
DEBUG2(printk("qla2xxx_eh_abort: Cmd in pending queue."
|
|
" serial_number %ld.\n",
|
|
sp->cmd->serial_number);)
|
|
|
|
__del_from_pending_queue(vis_ha, rp);
|
|
cmd->result = DID_ABORT << 16;
|
|
|
|
__add_to_done_queue(vis_ha, rp);
|
|
|
|
return_status = SUCCESS;
|
|
|
|
found++;
|
|
break;
|
|
} /* list_for_each_safe() */
|
|
spin_unlock(&vis_ha->list_lock);
|
|
} /*End of if !found */
|
|
|
|
if (!found) { /* find the command in our active list */
|
|
DEBUG3(printk("qla2xxx_eh_abort: searching sp %p "
|
|
"in outstanding queue.\n", sp);)
|
|
|
|
spin_lock(&ha->hardware_lock);
|
|
for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
|
|
sp = ha->outstanding_cmds[i];
|
|
|
|
if (sp == NULL)
|
|
continue;
|
|
|
|
if (sp->cmd != cmd)
|
|
continue;
|
|
|
|
DEBUG2(printk("qla2xxx_eh_abort(%ld): aborting sp %p "
|
|
"from RISC. pid=%ld sp->state=%x q->q_flag=%lx\n",
|
|
ha->host_no, sp, sp->cmd->serial_number,
|
|
sp->state, q->q_flag);)
|
|
DEBUG(qla2x00_print_scsi_cmd(cmd);)
|
|
|
|
/* Get a reference to the sp and drop the lock.*/
|
|
sp_get(ha, sp);
|
|
|
|
spin_unlock(&ha->hardware_lock);
|
|
spin_unlock_irq(ha->host->host_lock);
|
|
|
|
if (qla2x00_abort_command(ha, sp)) {
|
|
DEBUG2(printk("qla2xxx_eh_abort: abort_command "
|
|
"mbx failed.\n");)
|
|
return_status = FAILED;
|
|
} else {
|
|
DEBUG3(printk("qla2xxx_eh_abort: abort_command "
|
|
" mbx success.\n");)
|
|
return_status = SUCCESS;
|
|
}
|
|
|
|
sp_put(ha,sp);
|
|
|
|
spin_lock_irq(ha->host->host_lock);
|
|
spin_lock(&ha->hardware_lock);
|
|
|
|
/*
|
|
* Regardless of mailbox command status, go check on
|
|
* done queue just in case the sp is already done.
|
|
*/
|
|
break;
|
|
|
|
}/*End of for loop */
|
|
spin_unlock(&ha->hardware_lock);
|
|
|
|
} /*End of if !found */
|
|
|
|
/* Waiting for our command in done_queue to be returned to OS.*/
|
|
if (qla2x00_eh_wait_on_command(ha, cmd) != 0) {
|
|
DEBUG2(printk("qla2xxx_eh_abort: cmd returned back to OS.\n");)
|
|
return_status = SUCCESS;
|
|
}
|
|
|
|
if (return_status == FAILED) {
|
|
qla_printk(KERN_INFO, ha,
|
|
"qla2xxx_eh_abort Exiting: status=Failed\n");
|
|
return FAILED;
|
|
}
|
|
|
|
DEBUG2(printk("qla2xxx_eh_abort: Exiting. return_status=0x%x.\n",
|
|
return_status));
|
|
|
|
return return_status;
|
|
}
|
|
|
|
/**************************************************************************
|
|
* qla2x00_eh_wait_for_pending_target_commands
|
|
*
|
|
* Description:
|
|
* Waits for all the commands to come back from the specified target.
|
|
*
|
|
* Input:
|
|
* ha - pointer to scsi_qla_host structure.
|
|
* t - target
|
|
* Returns:
|
|
* Either SUCCESS or FAILED.
|
|
*
|
|
* Note:
|
|
**************************************************************************/
|
|
static int
|
|
qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
|
|
{
|
|
int cnt;
|
|
int status;
|
|
srb_t *sp;
|
|
struct scsi_cmnd *cmd;
|
|
|
|
status = 0;
|
|
|
|
/*
|
|
* Waiting for all commands for the designated target in the active
|
|
* array
|
|
*/
|
|
for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
|
|
spin_lock(&ha->hardware_lock);
|
|
sp = ha->outstanding_cmds[cnt];
|
|
if (sp) {
|
|
cmd = sp->cmd;
|
|
spin_unlock(&ha->hardware_lock);
|
|
if (cmd->device->id == t) {
|
|
if (!qla2x00_eh_wait_on_command(ha, cmd)) {
|
|
status = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
spin_unlock(&ha->hardware_lock);
|
|
}
|
|
}
|
|
return (status);
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
* qla2xxx_eh_device_reset
|
|
*
|
|
* Description:
|
|
* The device reset function will reset the target and abort any
|
|
* executing commands.
|
|
*
|
|
* NOTE: The use of SP is undefined within this context. Do *NOT*
|
|
* attempt to use this value, even if you determine it is
|
|
* non-null.
|
|
*
|
|
* Input:
|
|
* cmd = Linux SCSI command packet of the command that cause the
|
|
* bus device reset.
|
|
*
|
|
* Returns:
|
|
* SUCCESS/FAILURE (defined as macro in scsi.h).
|
|
*
|
|
**************************************************************************/
|
|
int
|
|
qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
|
|
{
|
|
int return_status;
|
|
unsigned int b, t, l;
|
|
scsi_qla_host_t *ha;
|
|
os_tgt_t *tq;
|
|
os_lun_t *lq;
|
|
fc_port_t *fcport_to_reset;
|
|
srb_t *rp;
|
|
struct list_head *list, *temp;
|
|
|
|
return_status = FAILED;
|
|
if (cmd == NULL) {
|
|
printk(KERN_INFO
|
|
"%s(): **** SCSI mid-layer passing in NULL cmd\n",
|
|
__func__);
|
|
|
|
return (return_status);
|
|
}
|
|
|
|
b = cmd->device->channel;
|
|
t = cmd->device->id;
|
|
l = cmd->device->lun;
|
|
ha = (scsi_qla_host_t *)cmd->device->host->hostdata;
|
|
|
|
tq = TGT_Q(ha, t);
|
|
if (tq == NULL) {
|
|
qla_printk(KERN_INFO, ha,
|
|
"%s(): **** CMD derives a NULL TGT_Q\n", __func__);
|
|
|
|
return (return_status);
|
|
}
|
|
lq = (os_lun_t *)LUN_Q(ha, t, l);
|
|
if (lq == NULL) {
|
|
printk(KERN_INFO
|
|
"%s(): **** CMD derives a NULL LUN_Q\n", __func__);
|
|
|
|
return (return_status);
|
|
}
|
|
fcport_to_reset = lq->fclun->fcport;
|
|
|
|
/* If we are coming in from the back-door, stall I/O until complete. */
|
|
if (!cmd->device->host->eh_active)
|
|
set_bit(TQF_SUSPENDED, &tq->flags);
|
|
|
|
qla_printk(KERN_INFO, ha,
|
|
"scsi(%ld:%d:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, b, t, l);
|
|
|
|
DEBUG2(printk(KERN_INFO
|
|
"scsi(%ld): DEVICE_RESET cmd=%p jiffies = 0x%lx, timeout=%x, "
|
|
"dpc_flags=%lx, status=%x allowed=%d cmd.state=%x\n",
|
|
ha->host_no, cmd, jiffies, cmd->timeout_per_command / HZ,
|
|
ha->dpc_flags, cmd->result, cmd->allowed, cmd->state));
|
|
|
|
/* Clear commands from the retry queue. */
|
|
spin_lock(&ha->list_lock);
|
|
list_for_each_safe(list, temp, &ha->retry_queue) {
|
|
rp = list_entry(list, srb_t, list);
|
|
|
|
if (t != rp->cmd->device->id)
|
|
continue;
|
|
|
|
DEBUG2(printk(KERN_INFO
|
|
"qla2xxx_eh_reset: found in retry queue. SP=%p\n", rp));
|
|
|
|
__del_from_retry_queue(ha, rp);
|
|
rp->cmd->result = DID_RESET << 16;
|
|
__add_to_done_queue(ha, rp);
|
|
}
|
|
spin_unlock(&ha->list_lock);
|
|
|
|
spin_unlock_irq(ha->host->host_lock);
|
|
|
|
if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
|
|
DEBUG2(printk(KERN_INFO
|
|
"%s failed:board disabled\n",__func__));
|
|
|
|
spin_lock_irq(ha->host->host_lock);
|
|
goto eh_dev_reset_done;
|
|
}
|
|
|
|
if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
|
|
if (qla2x00_device_reset(ha, fcport_to_reset) == 0) {
|
|
return_status = SUCCESS;
|
|
}
|
|
|
|
#if defined(LOGOUT_AFTER_DEVICE_RESET)
|
|
if (return_status == SUCCESS) {
|
|
if (fcport_to_reset->flags & FC_FABRIC_DEVICE) {
|
|
qla2x00_fabric_logout(ha,
|
|
fcport_to_reset->loop_id);
|
|
qla2x00_mark_device_lost(ha, fcport_to_reset);
|
|
}
|
|
}
|
|
#endif
|
|
} else {
|
|
DEBUG2(printk(KERN_INFO
|
|
"%s failed: loop not ready\n",__func__);)
|
|
}
|
|
|
|
spin_lock_irq(ha->host->host_lock);
|
|
|
|
if (return_status == FAILED) {
|
|
DEBUG3(printk("%s(%ld): device reset failed\n",
|
|
__func__, ha->host_no));
|
|
qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
|
|
__func__);
|
|
|
|
goto eh_dev_reset_done;
|
|
}
|
|
|
|
/*
|
|
* If we are coming down the EH path, wait for all commands to
|
|
* complete for the device.
|
|
*/
|
|
if (cmd->device->host->eh_active) {
|
|
if (qla2x00_eh_wait_for_pending_target_commands(ha, t))
|
|
return_status = FAILED;
|
|
|
|
if (return_status == FAILED) {
|
|
DEBUG3(printk("%s(%ld): failed while waiting for "
|
|
"commands\n", __func__, ha->host_no));
|
|
qla_printk(KERN_INFO, ha,
|
|
"%s: failed while waiting for commands\n",
|
|
__func__);
|
|
|
|
goto eh_dev_reset_done;
|
|
}
|
|
}
|
|
|
|
qla_printk(KERN_INFO, ha,
|
|
"scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
|
|
ha->host_no, b, t, l);
|
|
|
|
eh_dev_reset_done:
|
|
|
|
if (!cmd->device->host->eh_active)
|
|
clear_bit(TQF_SUSPENDED, &tq->flags);
|
|
|
|
return (return_status);
|
|
}
|
|
|
|
/**************************************************************************
|
|
* qla2x00_eh_wait_for_pending_commands
|
|
*
|
|
* Description:
|
|
* Waits for all the commands to come back from the specified host.
|
|
*
|
|
* Input:
|
|
* ha - pointer to scsi_qla_host structure.
|
|
*
|
|
* Returns:
|
|
* 1 : SUCCESS
|
|
* 0 : FAILED
|
|
*
|
|
* Note:
|
|
**************************************************************************/
|
|
static int
|
|
qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
|
|
{
|
|
int cnt;
|
|
int status;
|
|
srb_t *sp;
|
|
struct scsi_cmnd *cmd;
|
|
|
|
status = 1;
|
|
|
|
/*
|
|
* Waiting for all commands for the designated target in the active
|
|
* array
|
|
*/
|
|
for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
|
|
spin_lock(&ha->hardware_lock);
|
|
sp = ha->outstanding_cmds[cnt];
|
|
if (sp) {
|
|
cmd = sp->cmd;
|
|
spin_unlock(&ha->hardware_lock);
|
|
status = qla2x00_eh_wait_on_command(ha, cmd);
|
|
if (status == 0)
|
|
break;
|
|
}
|
|
else {
|
|
spin_unlock(&ha->hardware_lock);
|
|
}
|
|
}
|
|
return (status);
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
* qla2xxx_eh_bus_reset
|
|
*
|
|
* Description:
|
|
* The bus reset function will reset the bus and abort any executing
|
|
* commands.
|
|
*
|
|
* Input:
|
|
* cmd = Linux SCSI command packet of the command that cause the
|
|
* bus reset.
|
|
*
|
|
* Returns:
|
|
* SUCCESS/FAILURE (defined as macro in scsi.h).
|
|
*
|
|
**************************************************************************/
|
|
int
|
|
qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
|
|
{
|
|
scsi_qla_host_t *ha;
|
|
srb_t *sp;
|
|
int rval = FAILED;
|
|
|
|
ha = (scsi_qla_host_t *) cmd->device->host->hostdata;
|
|
sp = (srb_t *) CMD_SP(cmd);
|
|
|
|
qla_printk(KERN_INFO, ha,
|
|
"scsi(%ld:%d:%d:%d): LOOP RESET ISSUED.\n", ha->host_no,
|
|
cmd->device->channel, cmd->device->id, cmd->device->lun);
|
|
|
|
spin_unlock_irq(ha->host->host_lock);
|
|
|
|
if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
|
|
DEBUG2(printk("%s failed:board disabled\n",__func__));
|
|
spin_lock_irq(ha->host->host_lock);
|
|
return FAILED;
|
|
}
|
|
|
|
if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
|
|
if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
|
|
rval = SUCCESS;
|
|
}
|
|
|
|
spin_lock_irq(ha->host->host_lock);
|
|
if (rval == FAILED)
|
|
goto out;
|
|
|
|
/* Waiting for our command in done_queue to be returned to OS.*/
|
|
if (cmd->device->host->eh_active)
|
|
if (!qla2x00_eh_wait_for_pending_commands(ha))
|
|
rval = FAILED;
|
|
|
|
out:
|
|
qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
|
|
(rval == FAILED) ? "failed" : "succeded");
|
|
|
|
return rval;
|
|
}
|
|
|
|
/**************************************************************************
|
|
* qla2xxx_eh_host_reset
|
|
*
|
|
* Description:
|
|
* The reset function will reset the Adapter.
|
|
*
|
|
* Input:
|
|
* cmd = Linux SCSI command packet of the command that cause the
|
|
* adapter reset.
|
|
*
|
|
* Returns:
|
|
* Either SUCCESS or FAILED.
|
|
*
|
|
* Note:
|
|
**************************************************************************/
|
|
int
|
|
qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
|
|
{
|
|
scsi_qla_host_t *ha = (scsi_qla_host_t *)cmd->device->host->hostdata;
|
|
int rval = SUCCESS;
|
|
|
|
/* Display which one we're actually resetting for debug. */
|
|
DEBUG(printk("qla2xxx_eh_host_reset:Resetting scsi(%ld).\n",
|
|
ha->host_no));
|
|
|
|
/*
|
|
* Now issue reset.
|
|
*/
|
|
qla_printk(KERN_INFO, ha,
|
|
"scsi(%ld:%d:%d:%d): ADAPTER RESET issued.\n", ha->host_no,
|
|
cmd->device->channel, cmd->device->id, cmd->device->lun);
|
|
|
|
spin_unlock_irq(ha->host->host_lock);
|
|
|
|
if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
|
|
goto board_disabled;
|
|
|
|
/*
|
|
* Fixme-may be dpc thread is active and processing
|
|
* loop_resync,so wait a while for it to
|
|
* be completed and then issue big hammer.Otherwise
|
|
* it may cause I/O failure as big hammer marks the
|
|
* devices as lost kicking of the port_down_timer
|
|
* while dpc is stuck for the mailbox to complete.
|
|
*/
|
|
/* Blocking call-Does context switching if loop is Not Ready */
|
|
qla2x00_wait_for_loop_ready(ha);
|
|
set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
|
|
if (qla2x00_abort_isp(ha)) {
|
|
clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
|
|
/* failed. schedule dpc to try */
|
|
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
|
|
|
|
if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
|
|
goto board_disabled;
|
|
}
|
|
|
|
clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
|
|
|
|
spin_lock_irq(ha->host->host_lock);
|
|
if (rval == FAILED)
|
|
goto out;
|
|
|
|
/* Waiting for our command in done_queue to be returned to OS.*/
|
|
if (!qla2x00_eh_wait_for_pending_commands(ha))
|
|
rval = FAILED;
|
|
|
|
out:
|
|
qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
|
|
(rval == FAILED) ? "failed" : "succeded");
|
|
|
|
return rval;
|
|
|
|
board_disabled:
|
|
spin_lock_irq(ha->host->host_lock);
|
|
|
|
qla_printk(KERN_INFO, ha, "%s: failed:board disabled\n", __func__);
|
|
return FAILED;
|
|
}
|
|
|
|
|
|
/*
|
|
* qla2x00_loop_reset
|
|
* Issue loop reset.
|
|
*
|
|
* Input:
|
|
* ha = adapter block pointer.
|
|
*
|
|
* Returns:
|
|
* 0 = success
|
|
*/
|
|
static int
|
|
qla2x00_loop_reset(scsi_qla_host_t *ha)
|
|
{
|
|
int status = QLA_SUCCESS;
|
|
uint16_t t;
|
|
os_tgt_t *tq;
|
|
|
|
if (ha->flags.enable_lip_reset) {
|
|
status = qla2x00_lip_reset(ha);
|
|
}
|
|
|
|
if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
|
|
for (t = 0; t < MAX_FIBRE_DEVICES; t++) {
|
|
if ((tq = TGT_Q(ha, t)) == NULL)
|
|
continue;
|
|
|
|
if (tq->fcport == NULL)
|
|
continue;
|
|
|
|
status = qla2x00_target_reset(ha, 0, t);
|
|
if (status != QLA_SUCCESS) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (status == QLA_SUCCESS &&
|
|
((!ha->flags.enable_target_reset &&
|
|
!ha->flags.enable_lip_reset) ||
|
|
ha->flags.enable_lip_full_login)) {
|
|
|
|
status = qla2x00_full_login_lip(ha);
|
|
}
|
|
|
|
/* Issue marker command only when we are going to start the I/O */
|
|
ha->marker_needed = 1;
|
|
|
|
if (status) {
|
|
/* Empty */
|
|
DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
|
|
__func__,
|
|
ha->host_no);)
|
|
} else {
|
|
/* Empty */
|
|
DEBUG3(printk("%s(%ld): exiting normally.\n",
|
|
__func__,
|
|
ha->host_no);)
|
|
}
|
|
|
|
return(status);
|
|
}
|
|
|
|
/*
|
|
* qla2x00_device_reset
|
|
* Issue bus device reset message to the target.
|
|
*
|
|
* Input:
|
|
* ha = adapter block pointer.
|
|
* t = SCSI ID.
|
|
* TARGET_QUEUE_LOCK must be released.
|
|
* ADAPTER_STATE_LOCK must be released.
|
|
*
|
|
* Context:
|
|
* Kernel context.
|
|
*/
|
|
static int
|
|
qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
|
|
{
|
|
/* Abort Target command will clear Reservation */
|
|
return qla2x00_abort_target(reset_fcport);
|
|
}
|
|
|
|
/**************************************************************************
|
|
* qla2xxx_slave_configure
|
|
*
|
|
* Description:
|
|
**************************************************************************/
|
|
int
|
|
qla2xxx_slave_configure(struct scsi_device *sdev)
|
|
{
|
|
scsi_qla_host_t *ha = to_qla_host(sdev->host);
|
|
int queue_depth;
|
|
|
|
if (IS_QLA2100(ha) || IS_QLA2200(ha))
|
|
queue_depth = 16;
|
|
else
|
|
queue_depth = 32;
|
|
|
|
if (sdev->tagged_supported) {
|
|
if (ql2xmaxqdepth != 0 && ql2xmaxqdepth <= 0xffffU)
|
|
queue_depth = ql2xmaxqdepth;
|
|
|
|
ql2xmaxqdepth = queue_depth;
|
|
|
|
scsi_activate_tcq(sdev, queue_depth);
|
|
|
|
qla_printk(KERN_INFO, ha,
|
|
"scsi(%d:%d:%d:%d): Enabled tagged queuing, queue "
|
|
"depth %d.\n",
|
|
sdev->host->host_no, sdev->channel, sdev->id, sdev->lun,
|
|
sdev->queue_depth);
|
|
} else {
|
|
scsi_adjust_queue_depth(sdev, 0 /* TCQ off */,
|
|
sdev->host->hostt->cmd_per_lun /* 3 */);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/**
|
|
* qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
|
|
* @ha: HA context
|
|
*
|
|
* At exit, the @ha's flags.enable_64bit_addressing set to indicated
|
|
* supported addressing method.
|
|
*/
|
|
static void
|
|
qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
|
|
{
|
|
/* Assume 32bit DMA address */
|
|
ha->flags.enable_64bit_addressing = 0;
|
|
ha->calc_request_entries = qla2x00_calc_iocbs_32;
|
|
ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_32;
|
|
|
|
/*
|
|
* Given the two variants pci_set_dma_mask(), allow the compiler to
|
|
* assist in setting the proper dma mask.
|
|
*/
|
|
if (sizeof(dma_addr_t) > 4) {
|
|
if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) {
|
|
ha->flags.enable_64bit_addressing = 1;
|
|
ha->calc_request_entries = qla2x00_calc_iocbs_64;
|
|
ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_64;
|
|
|
|
if (pci_set_consistent_dma_mask(ha->pdev,
|
|
DMA_64BIT_MASK)) {
|
|
qla_printk(KERN_DEBUG, ha,
|
|
"Failed to set 64 bit PCI consistent mask; "
|
|
"using 32 bit.\n");
|
|
pci_set_consistent_dma_mask(ha->pdev,
|
|
DMA_32BIT_MASK);
|
|
}
|
|
} else {
|
|
qla_printk(KERN_DEBUG, ha,
|
|
"Failed to set 64 bit PCI DMA mask, falling back "
|
|
"to 32 bit MASK.\n");
|
|
pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
|
|
}
|
|
} else {
|
|
pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
|
|
}
|
|
}
|
|
|
|
static int
|
|
qla2x00_iospace_config(scsi_qla_host_t *ha)
|
|
{
|
|
unsigned long pio, pio_len, pio_flags;
|
|
unsigned long mmio, mmio_len, mmio_flags;
|
|
|
|
/* We only need PIO for Flash operations on ISP2312 v2 chips. */
|
|
pio = pci_resource_start(ha->pdev, 0);
|
|
pio_len = pci_resource_len(ha->pdev, 0);
|
|
pio_flags = pci_resource_flags(ha->pdev, 0);
|
|
if (pio_flags & IORESOURCE_IO) {
|
|
if (pio_len < MIN_IOBASE_LEN) {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Invalid PCI I/O region size (%s)...\n",
|
|
pci_name(ha->pdev));
|
|
pio = 0;
|
|
}
|
|
} else {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"region #0 not a PIO resource (%s)...\n",
|
|
pci_name(ha->pdev));
|
|
pio = 0;
|
|
}
|
|
|
|
/* Use MMIO operations for all accesses. */
|
|
mmio = pci_resource_start(ha->pdev, 1);
|
|
mmio_len = pci_resource_len(ha->pdev, 1);
|
|
mmio_flags = pci_resource_flags(ha->pdev, 1);
|
|
|
|
if (!(mmio_flags & IORESOURCE_MEM)) {
|
|
qla_printk(KERN_ERR, ha,
|
|
"region #0 not an MMIO resource (%s), aborting\n",
|
|
pci_name(ha->pdev));
|
|
goto iospace_error_exit;
|
|
}
|
|
if (mmio_len < MIN_IOBASE_LEN) {
|
|
qla_printk(KERN_ERR, ha,
|
|
"Invalid PCI mem region size (%s), aborting\n",
|
|
pci_name(ha->pdev));
|
|
goto iospace_error_exit;
|
|
}
|
|
|
|
if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Failed to reserve PIO/MMIO regions (%s)\n",
|
|
pci_name(ha->pdev));
|
|
|
|
goto iospace_error_exit;
|
|
}
|
|
|
|
ha->pio_address = pio;
|
|
ha->pio_length = pio_len;
|
|
ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
|
|
if (!ha->iobase) {
|
|
qla_printk(KERN_ERR, ha,
|
|
"cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
|
|
|
|
goto iospace_error_exit;
|
|
}
|
|
|
|
return (0);
|
|
|
|
iospace_error_exit:
|
|
return (-ENOMEM);
|
|
}
|
|
|
|
/*
|
|
* PCI driver interface
|
|
*/
|
|
int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
|
|
{
|
|
int ret;
|
|
device_reg_t __iomem *reg;
|
|
struct Scsi_Host *host;
|
|
scsi_qla_host_t *ha;
|
|
unsigned long flags = 0;
|
|
unsigned long wait_switch = 0;
|
|
char pci_info[20];
|
|
char fw_str[30];
|
|
|
|
if (pci_enable_device(pdev))
|
|
return -1;
|
|
|
|
host = scsi_host_alloc(&qla2x00_driver_template,
|
|
sizeof(scsi_qla_host_t));
|
|
if (host == NULL) {
|
|
printk(KERN_WARNING
|
|
"qla2xxx: Couldn't allocate host from scsi layer!\n");
|
|
goto probe_disable_device;
|
|
}
|
|
|
|
/* Clear our data area */
|
|
ha = (scsi_qla_host_t *)host->hostdata;
|
|
memset(ha, 0, sizeof(scsi_qla_host_t));
|
|
|
|
ha->pdev = pdev;
|
|
ha->host = host;
|
|
ha->host_no = host->host_no;
|
|
ha->brd_info = brd_info;
|
|
sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
|
|
|
|
/* Configure PCI I/O space */
|
|
ret = qla2x00_iospace_config(ha);
|
|
if (ret != 0) {
|
|
goto probe_failed;
|
|
}
|
|
|
|
/* Sanitize the information from PCI BIOS. */
|
|
host->irq = pdev->irq;
|
|
|
|
qla_printk(KERN_INFO, ha,
|
|
"Found an %s, irq %d, iobase 0x%p\n", ha->brd_info->isp_name,
|
|
host->irq, ha->iobase);
|
|
|
|
spin_lock_init(&ha->hardware_lock);
|
|
|
|
/* 4.23 Initialize /proc/scsi/qla2x00 counters */
|
|
ha->actthreads = 0;
|
|
ha->qthreads = 0;
|
|
ha->total_isr_cnt = 0;
|
|
ha->total_isp_aborts = 0;
|
|
ha->total_lip_cnt = 0;
|
|
ha->total_dev_errs = 0;
|
|
ha->total_ios = 0;
|
|
ha->total_bytes = 0;
|
|
|
|
ha->prev_topology = 0;
|
|
ha->ports = MAX_BUSES;
|
|
|
|
if (IS_QLA2100(ha)) {
|
|
ha->max_targets = MAX_TARGETS_2100;
|
|
ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
|
|
ha->request_q_length = REQUEST_ENTRY_CNT_2100;
|
|
ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
|
|
ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
|
|
host->sg_tablesize = 32;
|
|
} else if (IS_QLA2200(ha)) {
|
|
ha->max_targets = MAX_TARGETS_2200;
|
|
ha->mbx_count = MAILBOX_REGISTER_COUNT;
|
|
ha->request_q_length = REQUEST_ENTRY_CNT_2200;
|
|
ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
|
|
ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
|
|
} else /*if (IS_QLA2300(ha))*/ {
|
|
ha->max_targets = MAX_TARGETS_2200;
|
|
ha->mbx_count = MAILBOX_REGISTER_COUNT;
|
|
ha->request_q_length = REQUEST_ENTRY_CNT_2200;
|
|
ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
|
|
ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
|
|
}
|
|
host->can_queue = ha->request_q_length + 128;
|
|
|
|
/* load the F/W, read paramaters, and init the H/W */
|
|
ha->instance = num_hosts;
|
|
|
|
init_MUTEX(&ha->mbx_cmd_sem);
|
|
init_MUTEX_LOCKED(&ha->mbx_intr_sem);
|
|
|
|
INIT_LIST_HEAD(&ha->list);
|
|
INIT_LIST_HEAD(&ha->fcports);
|
|
INIT_LIST_HEAD(&ha->rscn_fcports);
|
|
INIT_LIST_HEAD(&ha->done_queue);
|
|
INIT_LIST_HEAD(&ha->retry_queue);
|
|
INIT_LIST_HEAD(&ha->scsi_retry_queue);
|
|
INIT_LIST_HEAD(&ha->pending_queue);
|
|
|
|
/*
|
|
* These locks are used to prevent more than one CPU
|
|
* from modifying the queue at the same time. The
|
|
* higher level "host_lock" will reduce most
|
|
* contention for these locks.
|
|
*/
|
|
spin_lock_init(&ha->mbx_reg_lock);
|
|
spin_lock_init(&ha->list_lock);
|
|
|
|
ha->dpc_pid = -1;
|
|
init_completion(&ha->dpc_inited);
|
|
init_completion(&ha->dpc_exited);
|
|
|
|
qla2x00_config_dma_addressing(ha);
|
|
if (qla2x00_mem_alloc(ha)) {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"[ERROR] Failed to allocate memory for adapter\n");
|
|
|
|
goto probe_failed;
|
|
}
|
|
|
|
if (qla2x00_initialize_adapter(ha) &&
|
|
!(ha->device_flags & DFLG_NO_CABLE)) {
|
|
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Failed to initialize adapter\n");
|
|
|
|
DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
|
|
"Adapter flags %x.\n",
|
|
ha->host_no, ha->device_flags));
|
|
|
|
goto probe_failed;
|
|
}
|
|
|
|
/*
|
|
* Startup the kernel thread for this host adapter
|
|
*/
|
|
ha->dpc_should_die = 0;
|
|
ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0);
|
|
if (ha->dpc_pid < 0) {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Unable to start DPC thread!\n");
|
|
|
|
goto probe_failed;
|
|
}
|
|
wait_for_completion(&ha->dpc_inited);
|
|
|
|
host->this_id = 255;
|
|
host->cmd_per_lun = 3;
|
|
host->max_cmd_len = MAX_CMDSZ;
|
|
host->max_channel = ha->ports - 1;
|
|
host->max_lun = ha->max_luns;
|
|
BUG_ON(qla2xxx_transport_template == NULL);
|
|
host->transportt = qla2xxx_transport_template;
|
|
host->unique_id = ha->instance;
|
|
host->max_id = ha->max_targets;
|
|
|
|
if (IS_QLA2100(ha) || IS_QLA2200(ha))
|
|
ret = request_irq(host->irq, qla2100_intr_handler,
|
|
SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
|
|
else
|
|
ret = request_irq(host->irq, qla2300_intr_handler,
|
|
SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
|
|
if (ret != 0) {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Failed to reserve interrupt %d already in use.\n",
|
|
host->irq);
|
|
goto probe_failed;
|
|
}
|
|
|
|
/* Initialized the timer */
|
|
qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
|
|
|
|
DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
|
|
ha->host_no, ha));
|
|
|
|
reg = ha->iobase;
|
|
|
|
/* Disable ISP interrupts. */
|
|
qla2x00_disable_intrs(ha);
|
|
|
|
/* Ensure mailbox registers are free. */
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
WRT_REG_WORD(®->semaphore, 0);
|
|
WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT);
|
|
WRT_REG_WORD(®->hccr, HCCR_CLR_HOST_INT);
|
|
|
|
/* Enable proper parity */
|
|
if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
|
|
if (IS_QLA2300(ha))
|
|
/* SRAM parity */
|
|
WRT_REG_WORD(®->hccr, (HCCR_ENABLE_PARITY + 0x1));
|
|
else
|
|
/* SRAM, Instruction RAM and GP RAM parity */
|
|
WRT_REG_WORD(®->hccr, (HCCR_ENABLE_PARITY + 0x7));
|
|
}
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
/* Enable chip interrupts. */
|
|
qla2x00_enable_intrs(ha);
|
|
|
|
/* v2.19.5b6 */
|
|
/*
|
|
* Wait around max loop_reset_delay secs for the devices to come
|
|
* on-line. We don't want Linux scanning before we are ready.
|
|
*
|
|
*/
|
|
for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
|
|
time_before(jiffies,wait_switch) &&
|
|
!(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
|
|
&& (ha->device_flags & SWITCH_FOUND) ;) {
|
|
|
|
qla2x00_check_fabric_devices(ha);
|
|
|
|
msleep(10);
|
|
}
|
|
|
|
pci_set_drvdata(pdev, ha);
|
|
ha->flags.init_done = 1;
|
|
num_hosts++;
|
|
|
|
/* List the target we have found */
|
|
if (displayConfig) {
|
|
qla2x00_display_fc_names(ha);
|
|
}
|
|
|
|
if (scsi_add_host(host, &pdev->dev))
|
|
goto probe_failed;
|
|
|
|
sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_fw_dump_attr);
|
|
sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_nvram_attr);
|
|
|
|
qla_printk(KERN_INFO, ha, "\n"
|
|
" QLogic Fibre Channel HBA Driver: %s\n"
|
|
" QLogic %s - %s\n"
|
|
" %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str,
|
|
ha->model_number, ha->model_desc ? ha->model_desc: "",
|
|
ha->brd_info->isp_name, qla2x00_get_pci_info_str(ha, pci_info),
|
|
pci_name(ha->pdev), ha->flags.enable_64bit_addressing ? '+': '-',
|
|
ha->host_no, qla2x00_get_fw_version_str(ha, fw_str));
|
|
|
|
if (ql2xdoinitscan)
|
|
scsi_scan_host(host);
|
|
|
|
return 0;
|
|
|
|
probe_failed:
|
|
qla2x00_free_device(ha);
|
|
|
|
scsi_host_put(host);
|
|
|
|
probe_disable_device:
|
|
pci_disable_device(pdev);
|
|
|
|
return -1;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qla2x00_probe_one);
|
|
|
|
void qla2x00_remove_one(struct pci_dev *pdev)
|
|
{
|
|
scsi_qla_host_t *ha;
|
|
|
|
ha = pci_get_drvdata(pdev);
|
|
|
|
sysfs_remove_bin_file(&ha->host->shost_gendev.kobj,
|
|
&sysfs_fw_dump_attr);
|
|
sysfs_remove_bin_file(&ha->host->shost_gendev.kobj, &sysfs_nvram_attr);
|
|
|
|
scsi_remove_host(ha->host);
|
|
|
|
qla2x00_free_device(ha);
|
|
|
|
scsi_host_put(ha->host);
|
|
|
|
pci_set_drvdata(pdev, NULL);
|
|
}
|
|
EXPORT_SYMBOL_GPL(qla2x00_remove_one);
|
|
|
|
static void
|
|
qla2x00_free_device(scsi_qla_host_t *ha)
|
|
{
|
|
int ret;
|
|
|
|
/* Abort any outstanding IO descriptors. */
|
|
if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
|
|
qla2x00_cancel_io_descriptors(ha);
|
|
|
|
/* turn-off interrupts on the card */
|
|
if (ha->interrupts_on)
|
|
qla2x00_disable_intrs(ha);
|
|
|
|
/* Disable timer */
|
|
if (ha->timer_active)
|
|
qla2x00_stop_timer(ha);
|
|
|
|
/* Kill the kernel thread for this host */
|
|
if (ha->dpc_pid >= 0) {
|
|
ha->dpc_should_die = 1;
|
|
wmb();
|
|
ret = kill_proc(ha->dpc_pid, SIGHUP, 1);
|
|
if (ret) {
|
|
qla_printk(KERN_ERR, ha,
|
|
"Unable to signal DPC thread -- (%d)\n", ret);
|
|
|
|
/* TODO: SOMETHING MORE??? */
|
|
} else {
|
|
wait_for_completion(&ha->dpc_exited);
|
|
}
|
|
}
|
|
|
|
qla2x00_mem_free(ha);
|
|
|
|
|
|
ha->flags.online = 0;
|
|
|
|
/* Detach interrupts */
|
|
if (ha->pdev->irq)
|
|
free_irq(ha->pdev->irq, ha);
|
|
|
|
/* release io space registers */
|
|
if (ha->iobase)
|
|
iounmap(ha->iobase);
|
|
pci_release_regions(ha->pdev);
|
|
|
|
pci_disable_device(ha->pdev);
|
|
}
|
|
|
|
|
|
/*
|
|
* The following support functions are adopted to handle
|
|
* the re-entrant qla2x00_proc_info correctly.
|
|
*/
|
|
static void
|
|
copy_mem_info(struct info_str *info, char *data, int len)
|
|
{
|
|
if (info->pos + len > info->offset + info->length)
|
|
len = info->offset + info->length - info->pos;
|
|
|
|
if (info->pos + len < info->offset) {
|
|
info->pos += len;
|
|
return;
|
|
}
|
|
|
|
if (info->pos < info->offset) {
|
|
off_t partial;
|
|
|
|
partial = info->offset - info->pos;
|
|
data += partial;
|
|
info->pos += partial;
|
|
len -= partial;
|
|
}
|
|
|
|
if (len > 0) {
|
|
memcpy(info->buffer, data, len);
|
|
info->pos += len;
|
|
info->buffer += len;
|
|
}
|
|
}
|
|
|
|
static int
|
|
copy_info(struct info_str *info, char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
char buf[256];
|
|
int len;
|
|
|
|
va_start(args, fmt);
|
|
len = vsprintf(buf, fmt, args);
|
|
va_end(args);
|
|
|
|
copy_mem_info(info, buf, len);
|
|
|
|
return (len);
|
|
}
|
|
|
|
/*************************************************************************
|
|
* qla2x00_proc_info
|
|
*
|
|
* Description:
|
|
* Return information to handle /proc support for the driver.
|
|
*
|
|
* inout : decides the direction of the dataflow and the meaning of the
|
|
* variables
|
|
* buffer: If inout==0 data is being written to it else read from it
|
|
* (ptr to a page buffer)
|
|
* *start: If inout==0 start of the valid data in the buffer
|
|
* offset: If inout==0 starting offset from the beginning of all
|
|
* possible data to return.
|
|
* length: If inout==0 max number of bytes to be written into the buffer
|
|
* else number of bytes in "buffer"
|
|
* Returns:
|
|
* < 0: error. errno value.
|
|
* >= 0: sizeof data returned.
|
|
*************************************************************************/
|
|
int
|
|
qla2x00_proc_info(struct Scsi_Host *shost, char *buffer,
|
|
char **start, off_t offset, int length, int inout)
|
|
{
|
|
struct info_str info;
|
|
int retval = -EINVAL;
|
|
os_lun_t *up;
|
|
os_tgt_t *tq;
|
|
unsigned int t, l;
|
|
uint32_t tmp_sn;
|
|
uint32_t *flags;
|
|
uint8_t *loop_state;
|
|
scsi_qla_host_t *ha;
|
|
char fw_info[30];
|
|
|
|
DEBUG3(printk(KERN_INFO
|
|
"Entering proc_info buff_in=%p, offset=0x%lx, length=0x%x\n",
|
|
buffer, offset, length);)
|
|
|
|
ha = (scsi_qla_host_t *) shost->hostdata;
|
|
|
|
if (inout) {
|
|
/* Has data been written to the file? */
|
|
DEBUG3(printk(
|
|
"%s: has data been written to the file. \n",
|
|
__func__);)
|
|
|
|
return -ENOSYS;
|
|
}
|
|
|
|
if (start) {
|
|
*start = buffer;
|
|
}
|
|
|
|
info.buffer = buffer;
|
|
info.length = length;
|
|
info.offset = offset;
|
|
info.pos = 0;
|
|
|
|
/* start building the print buffer */
|
|
copy_info(&info,
|
|
"QLogic PCI to Fibre Channel Host Adapter for %s:\n"
|
|
" Firmware version %s, ",
|
|
ha->model_number, qla2x00_get_fw_version_str(ha, fw_info));
|
|
|
|
copy_info(&info, "Driver version %s\n", qla2x00_version_str);
|
|
|
|
tmp_sn = ((ha->serial0 & 0x1f) << 16) | (ha->serial2 << 8) |
|
|
ha->serial1;
|
|
copy_info(&info, "ISP: %s, Serial# %c%05d\n",
|
|
ha->brd_info->isp_name, ('A' + tmp_sn/100000), (tmp_sn%100000));
|
|
|
|
copy_info(&info,
|
|
"Request Queue = 0x%llx, Response Queue = 0x%llx\n",
|
|
(unsigned long long)ha->request_dma,
|
|
(unsigned long long)ha->response_dma);
|
|
|
|
copy_info(&info,
|
|
"Request Queue count = %d, Response Queue count = %d\n",
|
|
ha->request_q_length, ha->response_q_length);
|
|
|
|
copy_info(&info,
|
|
"Total number of active commands = %ld\n",
|
|
ha->actthreads);
|
|
|
|
copy_info(&info,
|
|
"Total number of interrupts = %ld\n",
|
|
(long)ha->total_isr_cnt);
|
|
|
|
copy_info(&info,
|
|
" Device queue depth = 0x%x\n",
|
|
(ql2xmaxqdepth == 0) ? 16 : ql2xmaxqdepth);
|
|
|
|
copy_info(&info,
|
|
"Number of free request entries = %d\n", ha->req_q_cnt);
|
|
|
|
copy_info(&info,
|
|
"Number of mailbox timeouts = %ld\n", ha->total_mbx_timeout);
|
|
|
|
copy_info(&info,
|
|
"Number of ISP aborts = %ld\n", ha->total_isp_aborts);
|
|
|
|
copy_info(&info,
|
|
"Number of loop resyncs = %ld\n", ha->total_loop_resync);
|
|
|
|
copy_info(&info,
|
|
"Number of retries for empty slots = %ld\n",
|
|
qla2x00_stats.outarray_full);
|
|
|
|
copy_info(&info,
|
|
"Number of reqs in pending_q= %ld, retry_q= %d, "
|
|
"done_q= %ld, scsi_retry_q= %d\n",
|
|
ha->qthreads, ha->retry_q_cnt,
|
|
ha->done_q_cnt, ha->scsi_retry_q_cnt);
|
|
|
|
|
|
flags = (uint32_t *) &ha->flags;
|
|
|
|
if (atomic_read(&ha->loop_state) == LOOP_DOWN) {
|
|
loop_state = "DOWN";
|
|
} else if (atomic_read(&ha->loop_state) == LOOP_UP) {
|
|
loop_state = "UP";
|
|
} else if (atomic_read(&ha->loop_state) == LOOP_READY) {
|
|
loop_state = "READY";
|
|
} else if (atomic_read(&ha->loop_state) == LOOP_TIMEOUT) {
|
|
loop_state = "TIMEOUT";
|
|
} else if (atomic_read(&ha->loop_state) == LOOP_UPDATE) {
|
|
loop_state = "UPDATE";
|
|
} else {
|
|
loop_state = "UNKNOWN";
|
|
}
|
|
|
|
copy_info(&info,
|
|
"Host adapter:loop state = <%s>, flags = 0x%lx\n",
|
|
loop_state , *flags);
|
|
|
|
copy_info(&info, "Dpc flags = 0x%lx\n", ha->dpc_flags);
|
|
|
|
copy_info(&info, "MBX flags = 0x%x\n", ha->mbx_flags);
|
|
|
|
copy_info(&info, "Link down Timeout = %3.3d\n",
|
|
ha->link_down_timeout);
|
|
|
|
copy_info(&info, "Port down retry = %3.3d\n",
|
|
ha->port_down_retry_count);
|
|
|
|
copy_info(&info, "Login retry count = %3.3d\n",
|
|
ha->login_retry_count);
|
|
|
|
copy_info(&info,
|
|
"Commands retried with dropped frame(s) = %d\n",
|
|
ha->dropped_frame_error_cnt);
|
|
|
|
copy_info(&info,
|
|
"Product ID = %04x %04x %04x %04x\n", ha->product_id[0],
|
|
ha->product_id[1], ha->product_id[2], ha->product_id[3]);
|
|
|
|
copy_info(&info, "\n");
|
|
|
|
/* 2.25 node/port display to proc */
|
|
/* Display the node name for adapter */
|
|
copy_info(&info, "\nSCSI Device Information:\n");
|
|
copy_info(&info,
|
|
"scsi-qla%d-adapter-node="
|
|
"%02x%02x%02x%02x%02x%02x%02x%02x;\n",
|
|
(int)ha->instance,
|
|
ha->init_cb->node_name[0],
|
|
ha->init_cb->node_name[1],
|
|
ha->init_cb->node_name[2],
|
|
ha->init_cb->node_name[3],
|
|
ha->init_cb->node_name[4],
|
|
ha->init_cb->node_name[5],
|
|
ha->init_cb->node_name[6],
|
|
ha->init_cb->node_name[7]);
|
|
|
|
/* display the port name for adapter */
|
|
copy_info(&info,
|
|
"scsi-qla%d-adapter-port="
|
|
"%02x%02x%02x%02x%02x%02x%02x%02x;\n",
|
|
(int)ha->instance,
|
|
ha->init_cb->port_name[0],
|
|
ha->init_cb->port_name[1],
|
|
ha->init_cb->port_name[2],
|
|
ha->init_cb->port_name[3],
|
|
ha->init_cb->port_name[4],
|
|
ha->init_cb->port_name[5],
|
|
ha->init_cb->port_name[6],
|
|
ha->init_cb->port_name[7]);
|
|
|
|
/* Print out device port names */
|
|
for (t = 0; t < MAX_FIBRE_DEVICES; t++) {
|
|
if ((tq = TGT_Q(ha, t)) == NULL)
|
|
continue;
|
|
|
|
copy_info(&info,
|
|
"scsi-qla%d-target-%d="
|
|
"%02x%02x%02x%02x%02x%02x%02x%02x;\n",
|
|
(int)ha->instance, t,
|
|
tq->port_name[0], tq->port_name[1],
|
|
tq->port_name[2], tq->port_name[3],
|
|
tq->port_name[4], tq->port_name[5],
|
|
tq->port_name[6], tq->port_name[7]);
|
|
}
|
|
|
|
copy_info(&info, "\nSCSI LUN Information:\n");
|
|
copy_info(&info,
|
|
"(Id:Lun) * - indicates lun is not registered with the OS.\n");
|
|
|
|
/* scan for all equipment stats */
|
|
for (t = 0; t < MAX_FIBRE_DEVICES; t++) {
|
|
/* scan all luns */
|
|
for (l = 0; l < ha->max_luns; l++) {
|
|
up = (os_lun_t *) GET_LU_Q(ha, t, l);
|
|
|
|
if (up == NULL) {
|
|
continue;
|
|
}
|
|
if (up->fclun == NULL) {
|
|
continue;
|
|
}
|
|
|
|
copy_info(&info,
|
|
"(%2d:%2d): Total reqs %ld,",
|
|
t,l,up->io_cnt);
|
|
|
|
copy_info(&info,
|
|
" Pending reqs %ld,",
|
|
up->out_cnt);
|
|
|
|
if (up->io_cnt < 4) {
|
|
copy_info(&info,
|
|
" flags 0x%x*,",
|
|
(int)up->q_flag);
|
|
} else {
|
|
copy_info(&info,
|
|
" flags 0x%x,",
|
|
(int)up->q_flag);
|
|
}
|
|
|
|
copy_info(&info,
|
|
" %ld:%d:%02x %02x",
|
|
up->fclun->fcport->ha->instance,
|
|
up->fclun->fcport->cur_path,
|
|
up->fclun->fcport->loop_id,
|
|
up->fclun->device_type);
|
|
|
|
copy_info(&info, "\n");
|
|
|
|
if (info.pos >= info.offset + info.length) {
|
|
/* No need to continue */
|
|
goto profile_stop;
|
|
}
|
|
}
|
|
|
|
if (info.pos >= info.offset + info.length) {
|
|
/* No need to continue */
|
|
break;
|
|
}
|
|
}
|
|
|
|
profile_stop:
|
|
|
|
retval = info.pos > info.offset ? info.pos - info.offset : 0;
|
|
|
|
DEBUG3(printk(KERN_INFO
|
|
"Exiting proc_info: info.pos=%d, offset=0x%lx, "
|
|
"length=0x%x\n", info.pos, offset, length);)
|
|
|
|
return (retval);
|
|
}
|
|
|
|
/*
|
|
* qla2x00_display_fc_names
|
|
* This routine will the node names of the different devices found
|
|
* after port inquiry.
|
|
*
|
|
* Input:
|
|
* cmd = SCSI command structure
|
|
*
|
|
* Returns:
|
|
* None.
|
|
*/
|
|
static void
|
|
qla2x00_display_fc_names(scsi_qla_host_t *ha)
|
|
{
|
|
uint16_t tgt;
|
|
os_tgt_t *tq;
|
|
|
|
/* Display the node name for adapter */
|
|
qla_printk(KERN_INFO, ha,
|
|
"scsi-qla%d-adapter-node=%02x%02x%02x%02x%02x%02x%02x%02x\\;\n",
|
|
(int)ha->instance,
|
|
ha->init_cb->node_name[0],
|
|
ha->init_cb->node_name[1],
|
|
ha->init_cb->node_name[2],
|
|
ha->init_cb->node_name[3],
|
|
ha->init_cb->node_name[4],
|
|
ha->init_cb->node_name[5],
|
|
ha->init_cb->node_name[6],
|
|
ha->init_cb->node_name[7]);
|
|
|
|
/* display the port name for adapter */
|
|
qla_printk(KERN_INFO, ha,
|
|
"scsi-qla%d-adapter-port=%02x%02x%02x%02x%02x%02x%02x%02x\\;\n",
|
|
(int)ha->instance,
|
|
ha->init_cb->port_name[0],
|
|
ha->init_cb->port_name[1],
|
|
ha->init_cb->port_name[2],
|
|
ha->init_cb->port_name[3],
|
|
ha->init_cb->port_name[4],
|
|
ha->init_cb->port_name[5],
|
|
ha->init_cb->port_name[6],
|
|
ha->init_cb->port_name[7]);
|
|
|
|
/* Print out device port names */
|
|
for (tgt = 0; tgt < MAX_TARGETS; tgt++) {
|
|
if ((tq = ha->otgt[tgt]) == NULL)
|
|
continue;
|
|
|
|
if (tq->fcport == NULL)
|
|
continue;
|
|
|
|
switch (ha->binding_type) {
|
|
case BIND_BY_PORT_NAME:
|
|
qla_printk(KERN_INFO, ha,
|
|
"scsi-qla%d-tgt-%d-di-0-port="
|
|
"%02x%02x%02x%02x%02x%02x%02x%02x\\;\n",
|
|
(int)ha->instance,
|
|
tgt,
|
|
tq->port_name[0],
|
|
tq->port_name[1],
|
|
tq->port_name[2],
|
|
tq->port_name[3],
|
|
tq->port_name[4],
|
|
tq->port_name[5],
|
|
tq->port_name[6],
|
|
tq->port_name[7]);
|
|
|
|
break;
|
|
|
|
case BIND_BY_PORT_ID:
|
|
qla_printk(KERN_INFO, ha,
|
|
"scsi-qla%d-tgt-%d-di-0-pid="
|
|
"%02x%02x%02x\\;\n",
|
|
(int)ha->instance,
|
|
tgt,
|
|
tq->d_id.b.domain,
|
|
tq->d_id.b.area,
|
|
tq->d_id.b.al_pa);
|
|
break;
|
|
}
|
|
|
|
#if VSA
|
|
qla_printk(KERN_INFO, ha,
|
|
"scsi-qla%d-target-%d-vsa=01;\n", (int)ha->instance, tgt);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/*
|
|
* qla2x00_suspend_lun
|
|
* Suspend lun and start port down timer
|
|
*
|
|
* Input:
|
|
* ha = visable adapter block pointer.
|
|
* lq = lun queue
|
|
* cp = Scsi command pointer
|
|
* time = time in seconds
|
|
* count = number of times to let time expire
|
|
* delay_lun = non-zero, if lun should be delayed rather than suspended
|
|
*
|
|
* Return:
|
|
* QLA_SUCCESS -- suspended lun
|
|
* QLA_FUNCTION_FAILED -- Didn't suspend lun
|
|
*
|
|
* Context:
|
|
* Interrupt context.
|
|
*/
|
|
int
|
|
__qla2x00_suspend_lun(scsi_qla_host_t *ha,
|
|
os_lun_t *lq, int time, int count, int delay_lun)
|
|
{
|
|
int rval;
|
|
srb_t *sp;
|
|
struct list_head *list, *temp;
|
|
unsigned long flags;
|
|
|
|
rval = QLA_SUCCESS;
|
|
|
|
/* if the lun_q is already suspended then don't do it again */
|
|
if (lq->q_state == LUN_STATE_READY ||lq->q_state == LUN_STATE_RUN) {
|
|
|
|
spin_lock_irqsave(&lq->q_lock, flags);
|
|
if (lq->q_state == LUN_STATE_READY) {
|
|
lq->q_max = count;
|
|
lq->q_count = 0;
|
|
}
|
|
/* Set the suspend time usually 6 secs */
|
|
atomic_set(&lq->q_timer, time);
|
|
|
|
/* now suspend the lun */
|
|
lq->q_state = LUN_STATE_WAIT;
|
|
|
|
if (delay_lun) {
|
|
set_bit(LUN_EXEC_DELAYED, &lq->q_flag);
|
|
DEBUG(printk(KERN_INFO
|
|
"scsi(%ld): Delay lun execution for %d secs, "
|
|
"count=%d, max count=%d, state=%d\n",
|
|
ha->host_no,
|
|
time,
|
|
lq->q_count, lq->q_max, lq->q_state));
|
|
} else {
|
|
DEBUG(printk(KERN_INFO
|
|
"scsi(%ld): Suspend lun for %d secs, count=%d, "
|
|
"max count=%d, state=%d\n",
|
|
ha->host_no,
|
|
time,
|
|
lq->q_count, lq->q_max, lq->q_state));
|
|
}
|
|
spin_unlock_irqrestore(&lq->q_lock, flags);
|
|
|
|
/*
|
|
* Remove all pending commands from request queue and put them
|
|
* in the scsi_retry queue.
|
|
*/
|
|
spin_lock_irqsave(&ha->list_lock, flags);
|
|
list_for_each_safe(list, temp, &ha->pending_queue) {
|
|
sp = list_entry(list, srb_t, list);
|
|
if (sp->lun_queue != lq)
|
|
continue;
|
|
|
|
__del_from_pending_queue(ha, sp);
|
|
|
|
if (sp->cmd->allowed < count)
|
|
sp->cmd->allowed = count;
|
|
__add_to_scsi_retry_queue(ha, sp);
|
|
|
|
} /* list_for_each_safe */
|
|
spin_unlock_irqrestore(&ha->list_lock, flags);
|
|
rval = QLA_SUCCESS;
|
|
} else {
|
|
rval = QLA_FUNCTION_FAILED;
|
|
}
|
|
|
|
return (rval);
|
|
}
|
|
|
|
/*
|
|
* qla2x00_mark_device_lost Updates fcport state when device goes offline.
|
|
*
|
|
* Input: ha = adapter block pointer. fcport = port structure pointer.
|
|
*
|
|
* Return: None.
|
|
*
|
|
* Context:
|
|
*/
|
|
void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
|
|
int do_login)
|
|
{
|
|
/*
|
|
* We may need to retry the login, so don't change the state of the
|
|
* port but do the retries.
|
|
*/
|
|
if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
|
|
atomic_set(&fcport->state, FCS_DEVICE_LOST);
|
|
|
|
if (!do_login)
|
|
return;
|
|
|
|
if (fcport->login_retry == 0) {
|
|
fcport->login_retry = ha->login_retry_count;
|
|
set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
|
|
|
|
DEBUG(printk("scsi(%ld): Port login retry: "
|
|
"%02x%02x%02x%02x%02x%02x%02x%02x, "
|
|
"id = 0x%04x retry cnt=%d\n",
|
|
ha->host_no,
|
|
fcport->port_name[0],
|
|
fcport->port_name[1],
|
|
fcport->port_name[2],
|
|
fcport->port_name[3],
|
|
fcport->port_name[4],
|
|
fcport->port_name[5],
|
|
fcport->port_name[6],
|
|
fcport->port_name[7],
|
|
fcport->loop_id,
|
|
fcport->login_retry));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* qla2x00_mark_all_devices_lost
|
|
* Updates fcport state when device goes offline.
|
|
*
|
|
* Input:
|
|
* ha = adapter block pointer.
|
|
* fcport = port structure pointer.
|
|
*
|
|
* Return:
|
|
* None.
|
|
*
|
|
* Context:
|
|
*/
|
|
void
|
|
qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha)
|
|
{
|
|
fc_port_t *fcport;
|
|
|
|
list_for_each_entry(fcport, &ha->fcports, list) {
|
|
if (fcport->port_type != FCT_TARGET)
|
|
continue;
|
|
|
|
/*
|
|
* No point in marking the device as lost, if the device is
|
|
* already DEAD.
|
|
*/
|
|
if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
|
|
continue;
|
|
|
|
atomic_set(&fcport->state, FCS_DEVICE_LOST);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* qla2x00_mem_alloc
|
|
* Allocates adapter memory.
|
|
*
|
|
* Returns:
|
|
* 0 = success.
|
|
* 1 = failure.
|
|
*/
|
|
static uint8_t
|
|
qla2x00_mem_alloc(scsi_qla_host_t *ha)
|
|
{
|
|
char name[16];
|
|
uint8_t status = 1;
|
|
int retry= 10;
|
|
|
|
do {
|
|
/*
|
|
* This will loop only once if everything goes well, else some
|
|
* number of retries will be performed to get around a kernel
|
|
* bug where available mem is not allocated until after a
|
|
* little delay and a retry.
|
|
*/
|
|
ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
|
|
(ha->request_q_length + 1) * sizeof(request_t),
|
|
&ha->request_dma, GFP_KERNEL);
|
|
if (ha->request_ring == NULL) {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Memory Allocation failed - request_ring\n");
|
|
|
|
qla2x00_mem_free(ha);
|
|
msleep(100);
|
|
|
|
continue;
|
|
}
|
|
|
|
ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
|
|
(ha->response_q_length + 1) * sizeof(response_t),
|
|
&ha->response_dma, GFP_KERNEL);
|
|
if (ha->response_ring == NULL) {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Memory Allocation failed - response_ring\n");
|
|
|
|
qla2x00_mem_free(ha);
|
|
msleep(100);
|
|
|
|
continue;
|
|
}
|
|
|
|
ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
|
|
&ha->gid_list_dma, GFP_KERNEL);
|
|
if (ha->gid_list == NULL) {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Memory Allocation failed - gid_list\n");
|
|
|
|
qla2x00_mem_free(ha);
|
|
msleep(100);
|
|
|
|
continue;
|
|
}
|
|
|
|
ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
|
|
sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
|
|
if (ha->rlc_rsp == NULL) {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Memory Allocation failed - rlc");
|
|
|
|
qla2x00_mem_free(ha);
|
|
msleep(100);
|
|
|
|
continue;
|
|
}
|
|
|
|
snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
|
|
ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
|
|
DMA_POOL_SIZE, 8, 0);
|
|
if (ha->s_dma_pool == NULL) {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Memory Allocation failed - s_dma_pool\n");
|
|
|
|
qla2x00_mem_free(ha);
|
|
msleep(100);
|
|
|
|
continue;
|
|
}
|
|
|
|
/* get consistent memory allocated for init control block */
|
|
ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
|
|
&ha->init_cb_dma);
|
|
if (ha->init_cb == NULL) {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Memory Allocation failed - init_cb\n");
|
|
|
|
qla2x00_mem_free(ha);
|
|
msleep(100);
|
|
|
|
continue;
|
|
}
|
|
memset(ha->init_cb, 0, sizeof(init_cb_t));
|
|
|
|
/* Get consistent memory allocated for Get Port Database cmd */
|
|
ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
|
|
&ha->iodesc_pd_dma);
|
|
if (ha->iodesc_pd == NULL) {
|
|
/* error */
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Memory Allocation failed - iodesc_pd\n");
|
|
|
|
qla2x00_mem_free(ha);
|
|
msleep(100);
|
|
|
|
continue;
|
|
}
|
|
memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
|
|
|
|
/* Allocate ioctl related memory. */
|
|
if (qla2x00_alloc_ioctl_mem(ha)) {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Memory Allocation failed - ioctl_mem\n");
|
|
|
|
qla2x00_mem_free(ha);
|
|
msleep(100);
|
|
|
|
continue;
|
|
}
|
|
|
|
if (qla2x00_allocate_sp_pool(ha)) {
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Memory Allocation failed - "
|
|
"qla2x00_allocate_sp_pool()\n");
|
|
|
|
qla2x00_mem_free(ha);
|
|
msleep(100);
|
|
|
|
continue;
|
|
}
|
|
|
|
/* Allocate memory for SNS commands */
|
|
if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
|
|
/* Get consistent memory allocated for SNS commands */
|
|
ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
|
|
sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
|
|
GFP_KERNEL);
|
|
if (ha->sns_cmd == NULL) {
|
|
/* error */
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Memory Allocation failed - sns_cmd\n");
|
|
|
|
qla2x00_mem_free(ha);
|
|
msleep(100);
|
|
|
|
continue;
|
|
}
|
|
memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
|
|
} else {
|
|
/* Get consistent memory allocated for MS IOCB */
|
|
ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
|
|
&ha->ms_iocb_dma);
|
|
if (ha->ms_iocb == NULL) {
|
|
/* error */
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Memory Allocation failed - ms_iocb\n");
|
|
|
|
qla2x00_mem_free(ha);
|
|
msleep(100);
|
|
|
|
continue;
|
|
}
|
|
memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
|
|
|
|
/*
|
|
* Get consistent memory allocated for CT SNS
|
|
* commands
|
|
*/
|
|
ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
|
|
sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
|
|
GFP_KERNEL);
|
|
if (ha->ct_sns == NULL) {
|
|
/* error */
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Memory Allocation failed - ct_sns\n");
|
|
|
|
qla2x00_mem_free(ha);
|
|
msleep(100);
|
|
|
|
continue;
|
|
}
|
|
memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
|
|
}
|
|
|
|
/* Done all allocations without any error. */
|
|
status = 0;
|
|
|
|
} while (retry-- && status != 0);
|
|
|
|
if (status) {
|
|
printk(KERN_WARNING
|
|
"%s(): **** FAILED ****\n", __func__);
|
|
}
|
|
|
|
return(status);
|
|
}
|
|
|
|
/*
|
|
* qla2x00_mem_free
|
|
* Frees all adapter allocated memory.
|
|
*
|
|
* Input:
|
|
* ha = adapter block pointer.
|
|
*/
|
|
static void
|
|
qla2x00_mem_free(scsi_qla_host_t *ha)
|
|
{
|
|
uint32_t t;
|
|
struct list_head *fcpl, *fcptemp;
|
|
fc_port_t *fcport;
|
|
struct list_head *fcll, *fcltemp;
|
|
fc_lun_t *fclun;
|
|
unsigned long wtime;/* max wait time if mbx cmd is busy. */
|
|
|
|
if (ha == NULL) {
|
|
/* error */
|
|
DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
|
|
return;
|
|
}
|
|
|
|
/* Free the target queues */
|
|
for (t = 0; t < MAX_TARGETS; t++) {
|
|
qla2x00_tgt_free(ha, t);
|
|
}
|
|
|
|
/* Make sure all other threads are stopped. */
|
|
wtime = 60 * HZ;
|
|
while (ha->dpc_wait && wtime) {
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
wtime = schedule_timeout(wtime);
|
|
}
|
|
|
|
/* free ioctl memory */
|
|
qla2x00_free_ioctl_mem(ha);
|
|
|
|
/* free sp pool */
|
|
qla2x00_free_sp_pool(ha);
|
|
|
|
if (ha->sns_cmd)
|
|
dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
|
|
ha->sns_cmd, ha->sns_cmd_dma);
|
|
|
|
if (ha->ct_sns)
|
|
dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
|
|
ha->ct_sns, ha->ct_sns_dma);
|
|
|
|
if (ha->ms_iocb)
|
|
dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
|
|
|
|
if (ha->iodesc_pd)
|
|
dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
|
|
|
|
if (ha->init_cb)
|
|
dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
|
|
|
|
if (ha->s_dma_pool)
|
|
dma_pool_destroy(ha->s_dma_pool);
|
|
|
|
if (ha->rlc_rsp)
|
|
dma_free_coherent(&ha->pdev->dev,
|
|
sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
|
|
ha->rlc_rsp_dma);
|
|
|
|
if (ha->gid_list)
|
|
dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
|
|
ha->gid_list_dma);
|
|
|
|
if (ha->response_ring)
|
|
dma_free_coherent(&ha->pdev->dev,
|
|
(ha->response_q_length + 1) * sizeof(response_t),
|
|
ha->response_ring, ha->response_dma);
|
|
|
|
if (ha->request_ring)
|
|
dma_free_coherent(&ha->pdev->dev,
|
|
(ha->request_q_length + 1) * sizeof(request_t),
|
|
ha->request_ring, ha->request_dma);
|
|
|
|
ha->sns_cmd = NULL;
|
|
ha->sns_cmd_dma = 0;
|
|
ha->ct_sns = NULL;
|
|
ha->ct_sns_dma = 0;
|
|
ha->ms_iocb = NULL;
|
|
ha->ms_iocb_dma = 0;
|
|
ha->iodesc_pd = NULL;
|
|
ha->iodesc_pd_dma = 0;
|
|
ha->init_cb = NULL;
|
|
ha->init_cb_dma = 0;
|
|
|
|
ha->s_dma_pool = NULL;
|
|
|
|
ha->rlc_rsp = NULL;
|
|
ha->rlc_rsp_dma = 0;
|
|
ha->gid_list = NULL;
|
|
ha->gid_list_dma = 0;
|
|
|
|
ha->response_ring = NULL;
|
|
ha->response_dma = 0;
|
|
ha->request_ring = NULL;
|
|
ha->request_dma = 0;
|
|
|
|
list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
|
|
fcport = list_entry(fcpl, fc_port_t, list);
|
|
|
|
/* fc luns */
|
|
list_for_each_safe(fcll, fcltemp, &fcport->fcluns) {
|
|
fclun = list_entry(fcll, fc_lun_t, list);
|
|
|
|
list_del_init(&fclun->list);
|
|
kfree(fclun);
|
|
}
|
|
|
|
/* fc ports */
|
|
list_del_init(&fcport->list);
|
|
kfree(fcport);
|
|
}
|
|
INIT_LIST_HEAD(&ha->fcports);
|
|
|
|
if (ha->fw_dump)
|
|
free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
|
|
|
|
if (ha->fw_dump_buffer)
|
|
vfree(ha->fw_dump_buffer);
|
|
|
|
ha->fw_dump = NULL;
|
|
ha->fw_dump_reading = 0;
|
|
ha->fw_dump_buffer = NULL;
|
|
}
|
|
|
|
/*
|
|
* qla2x00_allocate_sp_pool
|
|
* This routine is called during initialization to allocate
|
|
* memory for local srb_t.
|
|
*
|
|
* Input:
|
|
* ha = adapter block pointer.
|
|
*
|
|
* Context:
|
|
* Kernel context.
|
|
*
|
|
* Note: Sets the ref_count for non Null sp to one.
|
|
*/
|
|
static int
|
|
qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
|
|
{
|
|
int rval;
|
|
|
|
rval = QLA_SUCCESS;
|
|
ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
|
|
mempool_free_slab, srb_cachep);
|
|
if (ha->srb_mempool == NULL) {
|
|
qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
|
|
rval = QLA_FUNCTION_FAILED;
|
|
}
|
|
return (rval);
|
|
}
|
|
|
|
/*
|
|
* This routine frees all adapter allocated memory.
|
|
*
|
|
*/
|
|
static void
|
|
qla2x00_free_sp_pool( scsi_qla_host_t *ha)
|
|
{
|
|
if (ha->srb_mempool) {
|
|
mempool_destroy(ha->srb_mempool);
|
|
ha->srb_mempool = NULL;
|
|
}
|
|
}
|
|
|
|
/**************************************************************************
|
|
* qla2x00_do_dpc
|
|
* This kernel thread is a task that is schedule by the interrupt handler
|
|
* to perform the background processing for interrupts.
|
|
*
|
|
* Notes:
|
|
* This task always run in the context of a kernel thread. It
|
|
* is kick-off by the driver's detect code and starts up
|
|
* up one per adapter. It immediately goes to sleep and waits for
|
|
* some fibre event. When either the interrupt handler or
|
|
* the timer routine detects a event it will one of the task
|
|
* bits then wake us up.
|
|
**************************************************************************/
|
|
static int
|
|
qla2x00_do_dpc(void *data)
|
|
{
|
|
DECLARE_MUTEX_LOCKED(sem);
|
|
scsi_qla_host_t *ha;
|
|
fc_port_t *fcport;
|
|
os_lun_t *q;
|
|
srb_t *sp;
|
|
uint8_t status;
|
|
unsigned long flags = 0;
|
|
struct list_head *list, *templist;
|
|
int dead_cnt, online_cnt;
|
|
int retry_cmds = 0;
|
|
uint16_t next_loopid;
|
|
int t;
|
|
os_tgt_t *tq;
|
|
|
|
ha = (scsi_qla_host_t *)data;
|
|
|
|
lock_kernel();
|
|
|
|
daemonize("%s_dpc", ha->host_str);
|
|
allow_signal(SIGHUP);
|
|
|
|
ha->dpc_wait = &sem;
|
|
|
|
set_user_nice(current, -20);
|
|
|
|
unlock_kernel();
|
|
|
|
complete(&ha->dpc_inited);
|
|
|
|
while (1) {
|
|
DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
|
|
|
|
if (down_interruptible(&sem))
|
|
break;
|
|
|
|
if (ha->dpc_should_die)
|
|
break;
|
|
|
|
DEBUG3(printk("qla2x00: DPC handler waking up\n"));
|
|
|
|
/* Initialization not yet finished. Don't do anything yet. */
|
|
if (!ha->flags.init_done || ha->dpc_active)
|
|
continue;
|
|
|
|
DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
|
|
|
|
ha->dpc_active = 1;
|
|
|
|
if (!list_empty(&ha->done_queue))
|
|
qla2x00_done(ha);
|
|
|
|
/* Process commands in retry queue */
|
|
if (test_and_clear_bit(PORT_RESTART_NEEDED, &ha->dpc_flags)) {
|
|
DEBUG(printk("scsi(%ld): DPC checking retry_q. "
|
|
"total=%d\n",
|
|
ha->host_no, ha->retry_q_cnt));
|
|
|
|
spin_lock_irqsave(&ha->list_lock, flags);
|
|
dead_cnt = online_cnt = 0;
|
|
list_for_each_safe(list, templist, &ha->retry_queue) {
|
|
sp = list_entry(list, srb_t, list);
|
|
q = sp->lun_queue;
|
|
DEBUG3(printk("scsi(%ld): pid=%ld sp=%p, "
|
|
"spflags=0x%x, q_flag= 0x%lx\n",
|
|
ha->host_no, sp->cmd->serial_number, sp,
|
|
sp->flags, q->q_flag));
|
|
|
|
if (q == NULL)
|
|
continue;
|
|
fcport = q->fclun->fcport;
|
|
|
|
if (atomic_read(&fcport->state) ==
|
|
FCS_DEVICE_DEAD ||
|
|
atomic_read(&fcport->ha->loop_state) == LOOP_DEAD) {
|
|
|
|
__del_from_retry_queue(ha, sp);
|
|
sp->cmd->result = DID_NO_CONNECT << 16;
|
|
if (atomic_read(&fcport->ha->loop_state) ==
|
|
LOOP_DOWN)
|
|
sp->err_id = SRB_ERR_LOOP;
|
|
else
|
|
sp->err_id = SRB_ERR_PORT;
|
|
sp->cmd->host_scribble =
|
|
(unsigned char *) NULL;
|
|
__add_to_done_queue(ha, sp);
|
|
dead_cnt++;
|
|
} else if (atomic_read(&fcport->state) !=
|
|
FCS_DEVICE_LOST) {
|
|
|
|
__del_from_retry_queue(ha, sp);
|
|
sp->cmd->result = DID_BUS_BUSY << 16;
|
|
sp->cmd->host_scribble =
|
|
(unsigned char *) NULL;
|
|
__add_to_done_queue(ha, sp);
|
|
online_cnt++;
|
|
}
|
|
} /* list_for_each_safe() */
|
|
spin_unlock_irqrestore(&ha->list_lock, flags);
|
|
|
|
DEBUG(printk("scsi(%ld): done processing retry queue "
|
|
"- dead=%d, online=%d\n ",
|
|
ha->host_no, dead_cnt, online_cnt));
|
|
}
|
|
|
|
/* Process commands in scsi retry queue */
|
|
if (test_and_clear_bit(SCSI_RESTART_NEEDED, &ha->dpc_flags)) {
|
|
/*
|
|
* Any requests we want to delay for some period is put
|
|
* in the scsi retry queue with a delay added. The
|
|
* timer will schedule a "scsi_restart_needed" every
|
|
* second as long as there are requests in the scsi
|
|
* queue.
|
|
*/
|
|
DEBUG(printk("scsi(%ld): DPC checking scsi "
|
|
"retry_q.total=%d\n",
|
|
ha->host_no, ha->scsi_retry_q_cnt));
|
|
|
|
online_cnt = 0;
|
|
spin_lock_irqsave(&ha->list_lock, flags);
|
|
list_for_each_safe(list, templist,
|
|
&ha->scsi_retry_queue) {
|
|
|
|
sp = list_entry(list, srb_t, list);
|
|
q = sp->lun_queue;
|
|
tq = sp->tgt_queue;
|
|
|
|
DEBUG3(printk("scsi(%ld): scsi_retry_q: "
|
|
"pid=%ld sp=%p, spflags=0x%x, "
|
|
"q_flag= 0x%lx,q_state=%d\n",
|
|
ha->host_no, sp->cmd->serial_number,
|
|
sp, sp->flags, q->q_flag, q->q_state));
|
|
|
|
/* Was this lun suspended */
|
|
if (q->q_state != LUN_STATE_WAIT) {
|
|
online_cnt++;
|
|
__del_from_scsi_retry_queue(ha, sp);
|
|
|
|
if (test_bit(TQF_RETRY_CMDS,
|
|
&tq->flags)) {
|
|
qla2x00_extend_timeout(sp->cmd,
|
|
(sp->cmd->timeout_per_command / HZ) - QLA_CMD_TIMER_DELTA);
|
|
__add_to_pending_queue(ha, sp);
|
|
retry_cmds++;
|
|
} else
|
|
__add_to_retry_queue(ha, sp);
|
|
}
|
|
|
|
/* Was this command suspended for N secs */
|
|
if (sp->delay != 0) {
|
|
sp->delay--;
|
|
if (sp->delay == 0) {
|
|
online_cnt++;
|
|
__del_from_scsi_retry_queue(
|
|
ha, sp);
|
|
__add_to_retry_queue(ha,sp);
|
|
}
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&ha->list_lock, flags);
|
|
|
|
/* Clear all Target Unsuspended bits */
|
|
for (t = 0; t < ha->max_targets; t++) {
|
|
if ((tq = ha->otgt[t]) == NULL)
|
|
continue;
|
|
|
|
if (test_bit(TQF_RETRY_CMDS, &tq->flags))
|
|
clear_bit(TQF_RETRY_CMDS, &tq->flags);
|
|
}
|
|
if (retry_cmds)
|
|
qla2x00_next(ha);
|
|
|
|
DEBUG(if (online_cnt > 0))
|
|
DEBUG(printk("scsi(%ld): dpc() found scsi reqs to "
|
|
"restart= %d\n",
|
|
ha->host_no, online_cnt));
|
|
}
|
|
|
|
if (ha->flags.mbox_busy) {
|
|
if (!list_empty(&ha->done_queue))
|
|
qla2x00_done(ha);
|
|
|
|
ha->dpc_active = 0;
|
|
continue;
|
|
}
|
|
|
|
if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
|
|
|
|
DEBUG(printk("scsi(%ld): dpc: sched "
|
|
"qla2x00_abort_isp ha = %p\n",
|
|
ha->host_no, ha));
|
|
if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
|
|
&ha->dpc_flags))) {
|
|
|
|
if (qla2x00_abort_isp(ha)) {
|
|
/* failed. retry later */
|
|
set_bit(ISP_ABORT_NEEDED,
|
|
&ha->dpc_flags);
|
|
}
|
|
clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
|
|
}
|
|
DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
|
|
ha->host_no));
|
|
}
|
|
|
|
if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
|
|
(!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
|
|
|
|
DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
|
|
ha->host_no));
|
|
|
|
qla2x00_rst_aen(ha);
|
|
clear_bit(RESET_ACTIVE, &ha->dpc_flags);
|
|
}
|
|
|
|
/* Retry each device up to login retry count */
|
|
if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
|
|
!test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
|
|
atomic_read(&ha->loop_state) != LOOP_DOWN) {
|
|
|
|
DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
|
|
ha->host_no));
|
|
|
|
next_loopid = 0;
|
|
list_for_each_entry(fcport, &ha->fcports, list) {
|
|
if (fcport->port_type != FCT_TARGET)
|
|
continue;
|
|
|
|
/*
|
|
* If the port is not ONLINE then try to login
|
|
* to it if we haven't run out of retries.
|
|
*/
|
|
if (atomic_read(&fcport->state) != FCS_ONLINE &&
|
|
fcport->login_retry) {
|
|
|
|
fcport->login_retry--;
|
|
if (fcport->flags & FCF_FABRIC_DEVICE) {
|
|
if (fcport->flags &
|
|
FCF_TAPE_PRESENT)
|
|
qla2x00_fabric_logout(
|
|
ha,
|
|
fcport->loop_id);
|
|
status = qla2x00_fabric_login(
|
|
ha, fcport, &next_loopid);
|
|
} else
|
|
status =
|
|
qla2x00_local_device_login(
|
|
ha, fcport->loop_id);
|
|
|
|
if (status == QLA_SUCCESS) {
|
|
fcport->old_loop_id = fcport->loop_id;
|
|
|
|
DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
|
|
ha->host_no, fcport->loop_id));
|
|
|
|
fcport->port_login_retry_count =
|
|
ha->port_down_retry_count * PORT_RETRY_TIME;
|
|
atomic_set(&fcport->state, FCS_ONLINE);
|
|
atomic_set(&fcport->port_down_timer,
|
|
ha->port_down_retry_count * PORT_RETRY_TIME);
|
|
|
|
fcport->login_retry = 0;
|
|
} else if (status == 1) {
|
|
set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
|
|
/* retry the login again */
|
|
DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
|
|
ha->host_no,
|
|
fcport->login_retry, fcport->loop_id));
|
|
} else {
|
|
fcport->login_retry = 0;
|
|
}
|
|
}
|
|
if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
|
|
break;
|
|
}
|
|
DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
|
|
ha->host_no));
|
|
}
|
|
|
|
if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
|
|
atomic_read(&ha->loop_state) != LOOP_DOWN) {
|
|
|
|
clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
|
|
DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
|
|
ha->host_no));
|
|
|
|
set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
|
|
|
|
DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
|
|
ha->host_no));
|
|
}
|
|
|
|
if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
|
|
|
|
DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
|
|
ha->host_no));
|
|
|
|
if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
|
|
&ha->dpc_flags))) {
|
|
|
|
qla2x00_loop_resync(ha);
|
|
|
|
clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
|
|
}
|
|
|
|
DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
|
|
ha->host_no));
|
|
}
|
|
|
|
|
|
if (test_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags)) {
|
|
DEBUG(printk("scsi(%ld): qla2x00_restart_queues()\n",
|
|
ha->host_no));
|
|
|
|
qla2x00_restart_queues(ha, 0);
|
|
|
|
DEBUG(printk("scsi(%ld): qla2x00_restart_queues - end\n",
|
|
ha->host_no));
|
|
}
|
|
|
|
if (test_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags)) {
|
|
|
|
DEBUG(printk("scsi(%ld): qla2x00_abort_queues()\n",
|
|
ha->host_no));
|
|
|
|
qla2x00_abort_queues(ha, 0);
|
|
|
|
DEBUG(printk("scsi(%ld): qla2x00_abort_queues - end\n",
|
|
ha->host_no));
|
|
}
|
|
|
|
if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
|
|
|
|
DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
|
|
ha->host_no));
|
|
|
|
qla2x00_rescan_fcports(ha);
|
|
|
|
DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
|
|
"end.\n",
|
|
ha->host_no));
|
|
}
|
|
|
|
|
|
if (!ha->interrupts_on)
|
|
qla2x00_enable_intrs(ha);
|
|
|
|
if (!list_empty(&ha->done_queue))
|
|
qla2x00_done(ha);
|
|
|
|
ha->dpc_active = 0;
|
|
} /* End of while(1) */
|
|
|
|
DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
|
|
|
|
/*
|
|
* Make sure that nobody tries to wake us up again.
|
|
*/
|
|
ha->dpc_wait = NULL;
|
|
ha->dpc_active = 0;
|
|
|
|
complete_and_exit(&ha->dpc_exited, 0);
|
|
}
|
|
|
|
/*
|
|
* qla2x00_abort_queues
|
|
* Abort all commands on queues on device
|
|
*
|
|
* Input:
|
|
* ha = adapter block pointer.
|
|
*
|
|
* Context:
|
|
* Interrupt context.
|
|
*/
|
|
void
|
|
qla2x00_abort_queues(scsi_qla_host_t *ha, uint8_t doneqflg)
|
|
{
|
|
|
|
srb_t *sp;
|
|
struct list_head *list, *temp;
|
|
unsigned long flags;
|
|
|
|
clear_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
|
|
|
|
/* Return all commands device queues. */
|
|
spin_lock_irqsave(&ha->list_lock,flags);
|
|
list_for_each_safe(list, temp, &ha->pending_queue) {
|
|
sp = list_entry(list, srb_t, list);
|
|
|
|
if (sp->flags & SRB_ABORTED)
|
|
continue;
|
|
|
|
/* Remove srb from LUN queue. */
|
|
__del_from_pending_queue(ha, sp);
|
|
|
|
/* Set ending status. */
|
|
sp->cmd->result = DID_BUS_BUSY << 16;
|
|
|
|
__add_to_done_queue(ha, sp);
|
|
}
|
|
spin_unlock_irqrestore(&ha->list_lock, flags);
|
|
}
|
|
|
|
/*
|
|
* qla2x00_rst_aen
|
|
* Processes asynchronous reset.
|
|
*
|
|
* Input:
|
|
* ha = adapter block pointer.
|
|
*/
|
|
static void
|
|
qla2x00_rst_aen(scsi_qla_host_t *ha)
|
|
{
|
|
if (ha->flags.online && !ha->flags.reset_active &&
|
|
!atomic_read(&ha->loop_down_timer) &&
|
|
!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
|
|
do {
|
|
clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
|
|
|
|
/*
|
|
* Issue marker command only when we are going to start
|
|
* the I/O.
|
|
*/
|
|
ha->marker_needed = 1;
|
|
} while (!atomic_read(&ha->loop_down_timer) &&
|
|
(test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* This routine will allocate SP from the free queue
|
|
* input:
|
|
* scsi_qla_host_t *
|
|
* output:
|
|
* srb_t * or NULL
|
|
*/
|
|
static srb_t *
|
|
qla2x00_get_new_sp(scsi_qla_host_t *ha)
|
|
{
|
|
srb_t *sp;
|
|
|
|
sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
|
|
if (sp)
|
|
atomic_set(&sp->ref_count, 1);
|
|
return (sp);
|
|
}
|
|
|
|
/**************************************************************************
|
|
* qla2x00_timer
|
|
*
|
|
* Description:
|
|
* One second timer
|
|
*
|
|
* Context: Interrupt
|
|
***************************************************************************/
|
|
static void
|
|
qla2x00_timer(scsi_qla_host_t *ha)
|
|
{
|
|
int t,l;
|
|
unsigned long cpu_flags = 0;
|
|
fc_port_t *fcport;
|
|
os_lun_t *lq;
|
|
os_tgt_t *tq;
|
|
int start_dpc = 0;
|
|
int index;
|
|
srb_t *sp;
|
|
|
|
/*
|
|
* We try and restart any request in the retry queue every second.
|
|
*/
|
|
if (!list_empty(&ha->retry_queue)) {
|
|
set_bit(PORT_RESTART_NEEDED, &ha->dpc_flags);
|
|
start_dpc++;
|
|
}
|
|
|
|
/*
|
|
* We try and restart any request in the scsi_retry queue every second.
|
|
*/
|
|
if (!list_empty(&ha->scsi_retry_queue)) {
|
|
set_bit(SCSI_RESTART_NEEDED, &ha->dpc_flags);
|
|
start_dpc++;
|
|
}
|
|
|
|
/*
|
|
* Ports - Port down timer.
|
|
*
|
|
* Whenever, a port is in the LOST state we start decrementing its port
|
|
* down timer every second until it reaches zero. Once it reaches zero
|
|
* the port it marked DEAD.
|
|
*/
|
|
t = 0;
|
|
list_for_each_entry(fcport, &ha->fcports, list) {
|
|
if (fcport->port_type != FCT_TARGET)
|
|
continue;
|
|
|
|
if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
|
|
|
|
if (atomic_read(&fcport->port_down_timer) == 0)
|
|
continue;
|
|
|
|
if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
|
|
atomic_set(&fcport->state, FCS_DEVICE_DEAD);
|
|
|
|
DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
|
|
"%d remainning\n",
|
|
ha->host_no,
|
|
t, atomic_read(&fcport->port_down_timer)));
|
|
}
|
|
t++;
|
|
} /* End of for fcport */
|
|
|
|
/*
|
|
* LUNS - lun suspend timer.
|
|
*
|
|
* Whenever, a lun is suspended the timer starts decrementing its
|
|
* suspend timer every second until it reaches zero. Once it reaches
|
|
* zero the lun retry count is decremented.
|
|
*/
|
|
|
|
/*
|
|
* FIXME(dg) - Need to convert this linear search of luns into a search
|
|
* of a list of suspended luns.
|
|
*/
|
|
for (t = 0; t < ha->max_targets; t++) {
|
|
if ((tq = ha->otgt[t]) == NULL)
|
|
continue;
|
|
|
|
for (l = 0; l < ha->max_luns; l++) {
|
|
if ((lq = (os_lun_t *) tq->olun[l]) == NULL)
|
|
continue;
|
|
|
|
spin_lock_irqsave(&lq->q_lock, cpu_flags);
|
|
if (lq->q_state == LUN_STATE_WAIT &&
|
|
atomic_read(&lq->q_timer) != 0) {
|
|
|
|
if (atomic_dec_and_test(&lq->q_timer) != 0) {
|
|
/*
|
|
* A delay should immediately
|
|
* transition to a READY state
|
|
*/
|
|
if (test_and_clear_bit(LUN_EXEC_DELAYED,
|
|
&lq->q_flag)) {
|
|
lq->q_state = LUN_STATE_READY;
|
|
}
|
|
else {
|
|
lq->q_count++;
|
|
if (lq->q_count == lq->q_max)
|
|
lq->q_state =
|
|
LUN_STATE_TIMEOUT;
|
|
else
|
|
lq->q_state =
|
|
LUN_STATE_RUN;
|
|
}
|
|
}
|
|
DEBUG3(printk("scsi(%ld): lun%d - timer %d, "
|
|
"count=%d, max=%d, state=%d\n",
|
|
ha->host_no,
|
|
l,
|
|
atomic_read(&lq->q_timer),
|
|
lq->q_count, lq->q_max, lq->q_state));
|
|
}
|
|
spin_unlock_irqrestore(&lq->q_lock, cpu_flags);
|
|
} /* End of for luns */
|
|
} /* End of for targets */
|
|
|
|
/* Loop down handler. */
|
|
if (atomic_read(&ha->loop_down_timer) > 0 &&
|
|
!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
|
|
|
|
if (atomic_read(&ha->loop_down_timer) ==
|
|
ha->loop_down_abort_time) {
|
|
|
|
DEBUG(printk("scsi(%ld): Loop Down - aborting the "
|
|
"queues before time expire\n",
|
|
ha->host_no));
|
|
|
|
if (!IS_QLA2100(ha) && ha->link_down_timeout)
|
|
atomic_set(&ha->loop_state, LOOP_DEAD);
|
|
|
|
/* Schedule an ISP abort to return any tape commands. */
|
|
spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
|
|
for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
|
|
index++) {
|
|
sp = ha->outstanding_cmds[index];
|
|
if (!sp)
|
|
continue;
|
|
if (!(sp->fclun->fcport->flags &
|
|
FCF_TAPE_PRESENT))
|
|
continue;
|
|
|
|
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
|
|
break;
|
|
}
|
|
spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
|
|
|
|
set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
|
|
start_dpc++;
|
|
}
|
|
|
|
/* if the loop has been down for 4 minutes, reinit adapter */
|
|
if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
|
|
DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
|
|
"restarting queues.\n",
|
|
ha->host_no));
|
|
|
|
set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
|
|
start_dpc++;
|
|
|
|
if (!(ha->device_flags & DFLG_NO_CABLE)) {
|
|
DEBUG(printk("scsi(%ld): Loop down - "
|
|
"aborting ISP.\n",
|
|
ha->host_no));
|
|
qla_printk(KERN_WARNING, ha,
|
|
"Loop down - aborting ISP.\n");
|
|
|
|
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
|
|
}
|
|
}
|
|
DEBUG3(printk("scsi(%ld): Loop Down - seconds remainning %d\n",
|
|
ha->host_no,
|
|
atomic_read(&ha->loop_down_timer)));
|
|
}
|
|
|
|
/*
|
|
* Done Q Handler -- dgFIXME This handler will kick off doneq if we
|
|
* haven't process it in 2 seconds.
|
|
*/
|
|
if (!list_empty(&ha->done_queue))
|
|
qla2x00_done(ha);
|
|
|
|
|
|
/* Schedule the DPC routine if needed */
|
|
if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
|
|
test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
|
|
start_dpc ||
|
|
test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
|
|
test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
|
|
ha->dpc_wait && !ha->dpc_active) {
|
|
|
|
up(ha->dpc_wait);
|
|
}
|
|
|
|
qla2x00_restart_timer(ha, WATCH_INTERVAL);
|
|
}
|
|
|
|
/*
|
|
* qla2x00_extend_timeout
|
|
* This routine will extend the timeout to the specified value.
|
|
*
|
|
* Input:
|
|
* cmd = SCSI command structure
|
|
*
|
|
* Returns:
|
|
* None.
|
|
*/
|
|
void
|
|
qla2x00_extend_timeout(struct scsi_cmnd *cmd, int timeout)
|
|
{
|
|
srb_t *sp = (srb_t *) CMD_SP(cmd);
|
|
u_long our_jiffies = (timeout * HZ) + jiffies;
|
|
|
|
sp->ext_history= 0;
|
|
sp->e_start = jiffies;
|
|
if (cmd->eh_timeout.function) {
|
|
mod_timer(&cmd->eh_timeout,our_jiffies);
|
|
sp->ext_history |= 1;
|
|
}
|
|
if (sp->timer.function != NULL) {
|
|
/*
|
|
* Our internal timer should timeout before the midlayer has a
|
|
* chance begin the abort process
|
|
*/
|
|
mod_timer(&sp->timer,our_jiffies - (QLA_CMD_TIMER_DELTA * HZ));
|
|
|
|
sp->ext_history |= 2;
|
|
}
|
|
}
|
|
|
|
/**************************************************************************
|
|
* qla2x00_cmd_timeout
|
|
*
|
|
* Description:
|
|
* Handles the command if it times out in any state.
|
|
*
|
|
* Input:
|
|
* sp - pointer to validate
|
|
*
|
|
* Returns:
|
|
* None.
|
|
* Note:Need to add the support for if( sp->state == SRB_FAILOVER_STATE).
|
|
**************************************************************************/
|
|
void
|
|
qla2x00_cmd_timeout(srb_t *sp)
|
|
{
|
|
int t, l;
|
|
int processed;
|
|
scsi_qla_host_t *vis_ha, *dest_ha;
|
|
struct scsi_cmnd *cmd;
|
|
unsigned long flags, cpu_flags;
|
|
fc_port_t *fcport;
|
|
|
|
cmd = sp->cmd;
|
|
vis_ha = (scsi_qla_host_t *)cmd->device->host->hostdata;
|
|
|
|
DEBUG3(printk("cmd_timeout: Entering sp->state = %x\n", sp->state));
|
|
|
|
t = cmd->device->id;
|
|
l = cmd->device->lun;
|
|
fcport = sp->fclun->fcport;
|
|
dest_ha = sp->ha;
|
|
|
|
/*
|
|
* If IO is found either in retry Queue
|
|
* OR in Lun Queue
|
|
* Return this IO back to host
|
|
*/
|
|
spin_lock_irqsave(&vis_ha->list_lock, flags);
|
|
processed = 0;
|
|
if (sp->state == SRB_PENDING_STATE) {
|
|
__del_from_pending_queue(vis_ha, sp);
|
|
DEBUG2(printk("scsi(%ld): Found in Pending queue pid %ld, "
|
|
"State = %x., fcport state=%d sjiffs=%lx njiffs=%lx\n",
|
|
vis_ha->host_no, cmd->serial_number, sp->state,
|
|
atomic_read(&fcport->state), sp->r_start, jiffies));
|
|
|
|
/*
|
|
* If FC_DEVICE is marked as dead return the cmd with
|
|
* DID_NO_CONNECT status. Otherwise set the host_byte to
|
|
* DID_BUS_BUSY to let the OS retry this cmd.
|
|
*/
|
|
if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
|
|
atomic_read(&fcport->ha->loop_state) == LOOP_DEAD) {
|
|
cmd->result = DID_NO_CONNECT << 16;
|
|
if (atomic_read(&fcport->ha->loop_state) == LOOP_DOWN)
|
|
sp->err_id = SRB_ERR_LOOP;
|
|
else
|
|
sp->err_id = SRB_ERR_PORT;
|
|
} else {
|
|
cmd->result = DID_BUS_BUSY << 16;
|
|
}
|
|
__add_to_done_queue(vis_ha, sp);
|
|
processed++;
|
|
}
|
|
spin_unlock_irqrestore(&vis_ha->list_lock, flags);
|
|
|
|
if (processed) {
|
|
qla2x00_done(vis_ha);
|
|
return;
|
|
}
|
|
|
|
spin_lock_irqsave(&dest_ha->list_lock, flags);
|
|
if ((sp->state == SRB_RETRY_STATE) ||
|
|
(sp->state == SRB_SCSI_RETRY_STATE)) {
|
|
|
|
DEBUG2(printk("scsi(%ld): Found in (Scsi) Retry queue or "
|
|
"failover Q pid %ld, State = %x., fcport state=%d "
|
|
"jiffies=%lx retried=%d\n",
|
|
dest_ha->host_no, cmd->serial_number, sp->state,
|
|
atomic_read(&fcport->state), jiffies, cmd->retries));
|
|
|
|
if ((sp->state == SRB_RETRY_STATE)) {
|
|
__del_from_retry_queue(dest_ha, sp);
|
|
} else if ((sp->state == SRB_SCSI_RETRY_STATE)) {
|
|
__del_from_scsi_retry_queue(dest_ha, sp);
|
|
}
|
|
|
|
/*
|
|
* If FC_DEVICE is marked as dead return the cmd with
|
|
* DID_NO_CONNECT status. Otherwise set the host_byte to
|
|
* DID_BUS_BUSY to let the OS retry this cmd.
|
|
*/
|
|
if ((atomic_read(&fcport->state) == FCS_DEVICE_DEAD) ||
|
|
atomic_read(&dest_ha->loop_state) == LOOP_DEAD) {
|
|
qla2x00_extend_timeout(cmd, EXTEND_CMD_TIMEOUT);
|
|
cmd->result = DID_NO_CONNECT << 16;
|
|
if (atomic_read(&dest_ha->loop_state) == LOOP_DOWN)
|
|
sp->err_id = SRB_ERR_LOOP;
|
|
else
|
|
sp->err_id = SRB_ERR_PORT;
|
|
} else {
|
|
cmd->result = DID_BUS_BUSY << 16;
|
|
}
|
|
|
|
__add_to_done_queue(dest_ha, sp);
|
|
processed++;
|
|
}
|
|
spin_unlock_irqrestore(&dest_ha->list_lock, flags);
|
|
|
|
if (processed) {
|
|
qla2x00_done(dest_ha);
|
|
return;
|
|
}
|
|
|
|
spin_lock_irqsave(&dest_ha->list_lock, cpu_flags);
|
|
if (sp->state == SRB_DONE_STATE) {
|
|
/* IO in done_q -- leave it */
|
|
DEBUG(printk("scsi(%ld): Found in Done queue pid %ld sp=%p.\n",
|
|
dest_ha->host_no, cmd->serial_number, sp));
|
|
} else if (sp->state == SRB_SUSPENDED_STATE) {
|
|
DEBUG(printk("scsi(%ld): Found SP %p in suspended state "
|
|
"- pid %ld:\n",
|
|
dest_ha->host_no, sp, cmd->serial_number));
|
|
DEBUG(qla2x00_dump_buffer((uint8_t *)sp, sizeof(srb_t));)
|
|
} else if (sp->state == SRB_ACTIVE_STATE) {
|
|
/*
|
|
* IO is with ISP find the command in our active list.
|
|
*/
|
|
spin_unlock_irqrestore(&dest_ha->list_lock, cpu_flags);
|
|
spin_lock_irqsave(&dest_ha->hardware_lock, flags);
|
|
if (sp == dest_ha->outstanding_cmds[
|
|
(unsigned long)sp->cmd->host_scribble]) {
|
|
|
|
DEBUG(printk("cmd_timeout: Found in ISP \n"));
|
|
|
|
if (sp->flags & SRB_TAPE) {
|
|
/*
|
|
* We cannot allow the midlayer error handler
|
|
* to wakeup and begin the abort process.
|
|
* Extend the timer so that the firmware can
|
|
* properly return the IOCB.
|
|
*/
|
|
DEBUG(printk("cmd_timeout: Extending timeout "
|
|
"of FCP2 tape command!\n"));
|
|
qla2x00_extend_timeout(sp->cmd,
|
|
EXTEND_CMD_TIMEOUT);
|
|
}
|
|
sp->state = SRB_ACTIVE_TIMEOUT_STATE;
|
|
spin_unlock_irqrestore(&dest_ha->hardware_lock, flags);
|
|
} else {
|
|
spin_unlock_irqrestore(&dest_ha->hardware_lock, flags);
|
|
printk(KERN_INFO
|
|
"qla_cmd_timeout: State indicates it is with "
|
|
"ISP, But not in active array\n");
|
|
}
|
|
spin_lock_irqsave(&dest_ha->list_lock, cpu_flags);
|
|
} else if (sp->state == SRB_ACTIVE_TIMEOUT_STATE) {
|
|
DEBUG(printk("qla2100%ld: Found in Active timeout state"
|
|
"pid %ld, State = %x., \n",
|
|
dest_ha->host_no,
|
|
sp->cmd->serial_number, sp->state);)
|
|
} else {
|
|
/* EMPTY */
|
|
DEBUG2(printk("cmd_timeout%ld: LOST command state = "
|
|
"0x%x, sp=%p\n",
|
|
vis_ha->host_no, sp->state,sp);)
|
|
|
|
qla_printk(KERN_INFO, vis_ha,
|
|
"cmd_timeout: LOST command state = 0x%x\n", sp->state);
|
|
}
|
|
spin_unlock_irqrestore(&dest_ha->list_lock, cpu_flags);
|
|
|
|
DEBUG3(printk("cmd_timeout: Leaving\n");)
|
|
}
|
|
|
|
/**************************************************************************
|
|
* qla2x00_done
|
|
* Process completed commands.
|
|
*
|
|
* Input:
|
|
* old_ha = adapter block pointer.
|
|
*
|
|
**************************************************************************/
|
|
void
|
|
qla2x00_done(scsi_qla_host_t *old_ha)
|
|
{
|
|
os_lun_t *lq;
|
|
struct scsi_cmnd *cmd;
|
|
unsigned long flags = 0;
|
|
scsi_qla_host_t *ha;
|
|
scsi_qla_host_t *vis_ha;
|
|
int send_marker_once = 0;
|
|
srb_t *sp, *sptemp;
|
|
LIST_HEAD(local_sp_list);
|
|
|
|
/*
|
|
* Get into local queue such that we do not wind up calling done queue
|
|
* tasklet for the same IOs from DPC or any other place.
|
|
*/
|
|
spin_lock_irqsave(&old_ha->list_lock, flags);
|
|
list_splice_init(&old_ha->done_queue, &local_sp_list);
|
|
spin_unlock_irqrestore(&old_ha->list_lock, flags);
|
|
|
|
/*
|
|
* All done commands are in the local queue, now do the call back.
|
|
*/
|
|
list_for_each_entry_safe(sp, sptemp, &local_sp_list, list) {
|
|
old_ha->done_q_cnt--;
|
|
sp->state = SRB_NO_QUEUE_STATE;
|
|
|
|
/* remove command from local list */
|
|
list_del_init(&sp->list);
|
|
|
|
cmd = sp->cmd;
|
|
if (cmd == NULL)
|
|
continue;
|
|
|
|
vis_ha = (scsi_qla_host_t *)cmd->device->host->hostdata;
|
|
lq = sp->lun_queue;
|
|
ha = sp->ha;
|
|
|
|
if (sp->flags & SRB_DMA_VALID) {
|
|
sp->flags &= ~SRB_DMA_VALID;
|
|
|
|
/* Release memory used for this I/O */
|
|
if (cmd->use_sg) {
|
|
pci_unmap_sg(ha->pdev, cmd->request_buffer,
|
|
cmd->use_sg, cmd->sc_data_direction);
|
|
} else if (cmd->request_bufflen) {
|
|
pci_unmap_page(ha->pdev, sp->dma_handle,
|
|
cmd->request_bufflen,
|
|
cmd->sc_data_direction);
|
|
}
|
|
}
|
|
|
|
|
|
switch (host_byte(cmd->result)) {
|
|
case DID_OK:
|
|
case DID_ERROR:
|
|
break;
|
|
|
|
case DID_RESET:
|
|
/*
|
|
* Set marker needed, so we don't have to
|
|
* send multiple markers
|
|
*/
|
|
if (!send_marker_once) {
|
|
ha->marker_needed = 1;
|
|
send_marker_once++;
|
|
}
|
|
|
|
/*
|
|
* WORKAROUND
|
|
*
|
|
* A backdoor device-reset requires different
|
|
* error handling. This code differentiates
|
|
* between normal error handling and the
|
|
* backdoor method.
|
|
*
|
|
*/
|
|
if (ha->host->eh_active != EH_ACTIVE)
|
|
cmd->result = DID_BUS_BUSY << 16;
|
|
break;
|
|
|
|
|
|
case DID_ABORT:
|
|
sp->flags &= ~SRB_ABORT_PENDING;
|
|
sp->flags |= SRB_ABORTED;
|
|
|
|
if (sp->flags & SRB_TIMEOUT)
|
|
cmd->result = DID_TIME_OUT << 16;
|
|
|
|
break;
|
|
|
|
default:
|
|
DEBUG2(printk("scsi(%ld:%d:%d) %s: did_error "
|
|
"= %d, comp-scsi= 0x%x-0x%x pid=%ld.\n",
|
|
vis_ha->host_no,
|
|
cmd->device->id, cmd->device->lun,
|
|
__func__,
|
|
host_byte(cmd->result),
|
|
CMD_COMPL_STATUS(cmd),
|
|
CMD_SCSI_STATUS(cmd), cmd->serial_number));
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Call the mid-level driver interrupt handler -- via sp_put()
|
|
*/
|
|
sp_put(ha, sp);
|
|
} /* end of while */
|
|
}
|
|
|
|
/*
|
|
* qla2x00_process_response_queue_in_zio_mode
|
|
* Process response queue completion as fast as possible
|
|
* to achieve Zero Interrupt Opertions-ZIO
|
|
*
|
|
* Input:
|
|
* ha = adapter block pointer.
|
|
*
|
|
* Context:
|
|
* Kernel context.
|
|
*/
|
|
static inline void
|
|
qla2x00_process_response_queue_in_zio_mode(scsi_qla_host_t *ha)
|
|
{
|
|
unsigned long flags;
|
|
|
|
/* Check for unprocessed commands in response queue. */
|
|
if (!ha->flags.process_response_queue)
|
|
return;
|
|
if (!ha->flags.online)
|
|
return;
|
|
if (ha->response_ring_ptr->signature == RESPONSE_PROCESSED)
|
|
return;
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock,flags);
|
|
qla2x00_process_response_queue(ha);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
}
|
|
|
|
/*
|
|
* qla2x00_next
|
|
* Retrieve and process next job in the LUN queue.
|
|
*
|
|
* Input:
|
|
* tq = SCSI target queue pointer.
|
|
* lq = SCSI LUN queue pointer.
|
|
* TGT_LOCK must be already obtained.
|
|
*
|
|
* Output:
|
|
* Releases TGT_LOCK upon exit.
|
|
*
|
|
* Context:
|
|
* Kernel/Interrupt context.
|
|
*
|
|
* Note: This routine will always try to start I/O from visible HBA.
|
|
*/
|
|
void
|
|
qla2x00_next(scsi_qla_host_t *vis_ha)
|
|
{
|
|
int rval;
|
|
unsigned long flags;
|
|
scsi_qla_host_t *dest_ha;
|
|
fc_port_t *fcport;
|
|
srb_t *sp, *sptemp;
|
|
LIST_HEAD(local_sp_list);
|
|
|
|
dest_ha = NULL;
|
|
|
|
spin_lock_irqsave(&vis_ha->list_lock, flags);
|
|
list_splice_init(&vis_ha->pending_queue, &local_sp_list);
|
|
vis_ha->qthreads = 0;
|
|
spin_unlock_irqrestore(&vis_ha->list_lock, flags);
|
|
|
|
list_for_each_entry_safe(sp, sptemp, &local_sp_list, list) {
|
|
list_del_init(&sp->list);
|
|
sp->state = SRB_NO_QUEUE_STATE;
|
|
|
|
fcport = sp->fclun->fcport;
|
|
dest_ha = fcport->ha;
|
|
|
|
/* If device is dead then send request back to OS */
|
|
if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD) {
|
|
sp->cmd->result = DID_NO_CONNECT << 16;
|
|
if (atomic_read(&dest_ha->loop_state) == LOOP_DOWN)
|
|
sp->err_id = SRB_ERR_LOOP;
|
|
else
|
|
sp->err_id = SRB_ERR_PORT;
|
|
|
|
DEBUG3(printk("scsi(%ld): loop/port is down - pid=%ld, "
|
|
"sp=%p err_id=%d loopid=0x%x queued to dest HBA "
|
|
"scsi%ld.\n", dest_ha->host_no,
|
|
sp->cmd->serial_number, sp, sp->err_id,
|
|
fcport->loop_id, dest_ha->host_no));
|
|
/*
|
|
* Initiate a failover - done routine will initiate.
|
|
*/
|
|
add_to_done_queue(vis_ha, sp);
|
|
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* SCSI Kluge: Whenever, we need to wait for an event such as
|
|
* loop down (i.e. loop_down_timer ) or port down (i.e. LUN
|
|
* request qeueue is suspended) then we will recycle new
|
|
* commands back to the SCSI layer. We do this because this is
|
|
* normally a temporary condition and we don't want the
|
|
* mid-level scsi.c driver to get upset and start aborting
|
|
* commands. The timeout value is extracted from the command
|
|
* minus 1-second and put on a retry queue (watchdog). Once the
|
|
* command timeout it is returned to the mid-level with a BUSY
|
|
* status, so the mid-level will retry it. This process
|
|
* continues until the LOOP DOWN time expires or the condition
|
|
* goes away.
|
|
*/
|
|
if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) &&
|
|
(atomic_read(&fcport->state) != FCS_ONLINE ||
|
|
test_bit(ABORT_ISP_ACTIVE, &dest_ha->dpc_flags) ||
|
|
atomic_read(&dest_ha->loop_state) != LOOP_READY)) {
|
|
|
|
DEBUG3(printk("scsi(%ld): pid=%ld port=0x%x state=%d "
|
|
"loop state=%d, loop counter=0x%x "
|
|
"dpc_flags=0x%lx\n", sp->cmd->serial_number,
|
|
dest_ha->host_no, fcport->loop_id,
|
|
atomic_read(&fcport->state),
|
|
atomic_read(&dest_ha->loop_state),
|
|
atomic_read(&dest_ha->loop_down_timer),
|
|
dest_ha->dpc_flags));
|
|
|
|
qla2x00_extend_timeout(sp->cmd, EXTEND_CMD_TIMEOUT);
|
|
add_to_retry_queue(vis_ha, sp);
|
|
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* If this request's lun is suspended then put the request on
|
|
* the scsi_retry queue.
|
|
*/
|
|
if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) &&
|
|
sp->lun_queue->q_state == LUN_STATE_WAIT) {
|
|
DEBUG3(printk("scsi(%ld): lun wait state - pid=%ld, "
|
|
"opcode=%d, allowed=%d, retries=%d\n",
|
|
dest_ha->host_no,
|
|
sp->cmd->serial_number,
|
|
sp->cmd->cmnd[0],
|
|
sp->cmd->allowed,
|
|
sp->cmd->retries));
|
|
|
|
add_to_scsi_retry_queue(vis_ha, sp);
|
|
|
|
continue;
|
|
}
|
|
|
|
sp->lun_queue->io_cnt++;
|
|
|
|
rval = qla2x00_start_scsi(sp);
|
|
if (rval != QLA_SUCCESS) {
|
|
/* Place request back on top of device queue */
|
|
/* add to the top of queue */
|
|
add_to_pending_queue_head(vis_ha, sp);
|
|
|
|
sp->lun_queue->io_cnt--;
|
|
}
|
|
}
|
|
|
|
if (!IS_QLA2100(vis_ha) && !IS_QLA2200(vis_ha)) {
|
|
/* Process response_queue if ZIO support is enabled*/
|
|
qla2x00_process_response_queue_in_zio_mode(vis_ha);
|
|
|
|
}
|
|
}
|
|
|
|
/* XXX(hch): crude hack to emulate a down_timeout() */
|
|
int
|
|
qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
|
|
{
|
|
const unsigned int step = HZ/10;
|
|
|
|
do {
|
|
if (!down_trylock(sema))
|
|
return 0;
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
if (schedule_timeout(step))
|
|
break;
|
|
} while ((timeout -= step) > 0);
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
static void
|
|
qla2xxx_get_port_id(struct scsi_target *starget)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
scsi_qla_host_t *ha = to_qla_host(shost);
|
|
struct fc_port *fc;
|
|
|
|
list_for_each_entry(fc, &ha->fcports, list) {
|
|
if (fc->os_target_id == starget->id) {
|
|
fc_starget_port_id(starget) = fc->d_id.b.domain << 16 |
|
|
fc->d_id.b.area << 8 |
|
|
fc->d_id.b.al_pa;
|
|
return;
|
|
}
|
|
}
|
|
fc_starget_port_id(starget) = -1;
|
|
}
|
|
|
|
static void
|
|
qla2xxx_get_port_name(struct scsi_target *starget)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
scsi_qla_host_t *ha = to_qla_host(shost);
|
|
struct fc_port *fc;
|
|
|
|
list_for_each_entry(fc, &ha->fcports, list) {
|
|
if (fc->os_target_id == starget->id) {
|
|
fc_starget_port_name(starget) =
|
|
__be64_to_cpu(*(uint64_t *)fc->port_name);
|
|
return;
|
|
}
|
|
}
|
|
fc_starget_port_name(starget) = -1;
|
|
}
|
|
|
|
static void
|
|
qla2xxx_get_node_name(struct scsi_target *starget)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
scsi_qla_host_t *ha = to_qla_host(shost);
|
|
struct fc_port *fc;
|
|
|
|
list_for_each_entry(fc, &ha->fcports, list) {
|
|
if (fc->os_target_id == starget->id) {
|
|
fc_starget_node_name(starget) =
|
|
__be64_to_cpu(*(uint64_t *)fc->node_name);
|
|
return;
|
|
}
|
|
}
|
|
fc_starget_node_name(starget) = -1;
|
|
}
|
|
|
|
static struct fc_function_template qla2xxx_transport_functions = {
|
|
.get_starget_port_id = qla2xxx_get_port_id,
|
|
.show_starget_port_id = 1,
|
|
.get_starget_port_name = qla2xxx_get_port_name,
|
|
.show_starget_port_name = 1,
|
|
.get_starget_node_name = qla2xxx_get_node_name,
|
|
.show_starget_node_name = 1,
|
|
};
|
|
|
|
/**
|
|
* qla2x00_module_init - Module initialization.
|
|
**/
|
|
static int __init
|
|
qla2x00_module_init(void)
|
|
{
|
|
/* Allocate cache for SRBs. */
|
|
sprintf(srb_cachep_name, "qla2xxx_srbs");
|
|
srb_cachep = kmem_cache_create(srb_cachep_name, sizeof(srb_t), 0,
|
|
SLAB_HWCACHE_ALIGN, NULL, NULL);
|
|
if (srb_cachep == NULL) {
|
|
printk(KERN_ERR
|
|
"qla2xxx: Unable to allocate SRB cache...Failing load!\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Derive version string. */
|
|
strcpy(qla2x00_version_str, QLA2XXX_VERSION);
|
|
#if DEBUG_QLA2100
|
|
strcat(qla2x00_version_str, "-debug");
|
|
#endif
|
|
|
|
qla2xxx_transport_template = fc_attach_transport(&qla2xxx_transport_functions);
|
|
if (!qla2xxx_transport_template)
|
|
return -ENODEV;
|
|
|
|
printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* qla2x00_module_exit - Module cleanup.
|
|
**/
|
|
static void __exit
|
|
qla2x00_module_exit(void)
|
|
{
|
|
/* Free SRBs cache. */
|
|
if (srb_cachep != NULL) {
|
|
if (kmem_cache_destroy(srb_cachep) != 0) {
|
|
printk(KERN_ERR
|
|
"qla2xxx: Unable to free SRB cache...Memory pools "
|
|
"still active?\n");
|
|
}
|
|
srb_cachep = NULL;
|
|
}
|
|
|
|
fc_release_transport(qla2xxx_transport_template);
|
|
}
|
|
|
|
module_init(qla2x00_module_init);
|
|
module_exit(qla2x00_module_exit);
|
|
|
|
MODULE_AUTHOR("QLogic Corporation");
|
|
MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_VERSION(QLA2XXX_VERSION);
|