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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#pragma ident "%Z%%M% %I% %E% SMI"
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/*
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* Multipath driver interface (MDI) implementation; see mdi_impl.h for a more
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* detailed discussion of the overall mpxio architecture.
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*
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* Default locking order:
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*
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* _NOTE(LOCK_ORDER(mdi_mutex, mdi_phci::ph_mutex))
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* _NOTE(LOCK_ORDER(mdi_mutex, mdi_client::ct_mutex))
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* _NOTE(LOCK_ORDER(mdi_phci::ph_mutex mdi_pathinfo::pi_mutex))
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* _NOTE(LOCK_ORDER(mdi_phci::ph_mutex mdi_client::ct_mutex))
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* _NOTE(LOCK_ORDER(mdi_client::ct_mutex mdi_pathinfo::pi_mutex))
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*/
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#include <sys/note.h>
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#include <sys/types.h>
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#include <sys/varargs.h>
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#include <sys/param.h>
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#include <sys/errno.h>
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#include <sys/uio.h>
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#include <sys/buf.h>
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#include <sys/modctl.h>
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#include <sys/open.h>
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#include <sys/kmem.h>
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#include <sys/poll.h>
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#include <sys/conf.h>
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#include <sys/bootconf.h>
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#include <sys/cmn_err.h>
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#include <sys/stat.h>
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#include <sys/ddi.h>
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#include <sys/sunddi.h>
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#include <sys/ddipropdefs.h>
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#include <sys/sunndi.h>
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#include <sys/ndi_impldefs.h>
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#include <sys/promif.h>
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#include <sys/sunmdi.h>
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#include <sys/mdi_impldefs.h>
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#include <sys/taskq.h>
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#include <sys/epm.h>
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#include <sys/sunpm.h>
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878
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#include <sys/modhash.h>
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0
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#ifdef DEBUG
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#include <sys/debug.h>
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int mdi_debug = 1;
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#define MDI_DEBUG(level, stmnt) \
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if (mdi_debug >= (level)) i_mdi_log stmnt
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static void i_mdi_log(int, dev_info_t *, const char *fmt, ...);
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#else /* !DEBUG */
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#define MDI_DEBUG(level, stmnt)
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#endif /* DEBUG */
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extern pri_t minclsyspri;
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extern int modrootloaded;
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/*
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* Global mutex:
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* Protects vHCI list and structure members, pHCI and Client lists.
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*/
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kmutex_t mdi_mutex;
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/*
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* Registered vHCI class driver lists
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*/
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int mdi_vhci_count;
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mdi_vhci_t *mdi_vhci_head;
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mdi_vhci_t *mdi_vhci_tail;
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/*
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* Client Hash Table size
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*/
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static int mdi_client_table_size = CLIENT_HASH_TABLE_SIZE;
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/*
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* taskq interface definitions
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*/
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#define MDI_TASKQ_N_THREADS 8
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#define MDI_TASKQ_PRI minclsyspri
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#define MDI_TASKQ_MINALLOC (4*mdi_taskq_n_threads)
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#define MDI_TASKQ_MAXALLOC (500*mdi_taskq_n_threads)
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taskq_t *mdi_taskq;
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static uint_t mdi_taskq_n_threads = MDI_TASKQ_N_THREADS;
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#define TICKS_PER_SECOND (drv_usectohz(1000000))
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/*
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* The data should be "quiet" for this interval (in seconds) before the
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* vhci cached data is flushed to the disk.
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*/
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static int mdi_vhcache_flush_delay = 10;
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/* number of seconds the vhcache flush daemon will sleep idle before exiting */
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static int mdi_vhcache_flush_daemon_idle_time = 60;
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/*
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* number of seconds the asynchronous configuration thread will sleep idle
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* before exiting.
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*/
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static int mdi_async_config_idle_time = 600;
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static int mdi_bus_config_cache_hash_size = 256;
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/* turns off multithreaded configuration for certain operations */
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static int mdi_mtc_off = 0;
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0
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/*
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* MDI component property name/value string definitions
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*/
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const char *mdi_component_prop = "mpxio-component";
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const char *mdi_component_prop_vhci = "vhci";
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const char *mdi_component_prop_phci = "phci";
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const char *mdi_component_prop_client = "client";
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/*
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* MDI client global unique identifier property name
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*/
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const char *mdi_client_guid_prop = "client-guid";
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/*
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* MDI client load balancing property name/value string definitions
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*/
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const char *mdi_load_balance = "load-balance";
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const char *mdi_load_balance_none = "none";
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const char *mdi_load_balance_rr = "round-robin";
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const char *mdi_load_balance_lba = "logical-block";
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/*
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* Obsolete vHCI class definition; to be removed after Leadville update
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*/
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const char *mdi_vhci_class_scsi = MDI_HCI_CLASS_SCSI;
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static char vhci_greeting[] =
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"\tThere already exists one vHCI driver for class %s\n"
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"\tOnly one vHCI driver for each class is allowed\n";
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/*
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* Static function prototypes
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*/
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static int i_mdi_phci_offline(dev_info_t *, uint_t);
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static int i_mdi_client_offline(dev_info_t *, uint_t);
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static int i_mdi_phci_pre_detach(dev_info_t *, ddi_detach_cmd_t);
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static void i_mdi_phci_post_detach(dev_info_t *,
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ddi_detach_cmd_t, int);
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static int i_mdi_client_pre_detach(dev_info_t *,
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ddi_detach_cmd_t);
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static void i_mdi_client_post_detach(dev_info_t *,
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ddi_detach_cmd_t, int);
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static void i_mdi_pm_hold_pip(mdi_pathinfo_t *);
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static void i_mdi_pm_rele_pip(mdi_pathinfo_t *);
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static int i_mdi_lba_lb(mdi_client_t *ct,
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mdi_pathinfo_t **ret_pip, struct buf *buf);
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static void i_mdi_pm_hold_client(mdi_client_t *, int);
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static void i_mdi_pm_rele_client(mdi_client_t *, int);
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static void i_mdi_pm_reset_client(mdi_client_t *);
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static void i_mdi_pm_hold_all_phci(mdi_client_t *);
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static int i_mdi_power_all_phci(mdi_client_t *);
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/*
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* Internal mdi_pathinfo node functions
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*/
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static int i_mdi_pi_kstat_create(mdi_pathinfo_t *);
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static void i_mdi_pi_kstat_destroy(mdi_pathinfo_t *);
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static mdi_vhci_t *i_mdi_vhci_class2vhci(char *);
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static mdi_vhci_t *i_devi_get_vhci(dev_info_t *);
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static mdi_phci_t *i_devi_get_phci(dev_info_t *);
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static void i_mdi_phci_lock(mdi_phci_t *, mdi_pathinfo_t *);
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static void i_mdi_phci_get_client_lock(mdi_phci_t *,
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mdi_client_t *);
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static void i_mdi_phci_unlock(mdi_phci_t *);
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878
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static mdi_pathinfo_t *i_mdi_pi_alloc(mdi_phci_t *, char *, mdi_client_t *);
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0
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static void i_mdi_phci_add_path(mdi_phci_t *, mdi_pathinfo_t *);
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static void i_mdi_client_add_path(mdi_client_t *, mdi_pathinfo_t *);
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static void i_mdi_pi_free(mdi_phci_t *ph, mdi_pathinfo_t *,
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mdi_client_t *);
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static void i_mdi_phci_remove_path(mdi_phci_t *, mdi_pathinfo_t *);
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static void i_mdi_client_remove_path(mdi_client_t *,
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mdi_pathinfo_t *);
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static int i_mdi_pi_state_change(mdi_pathinfo_t *,
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mdi_pathinfo_state_t, int);
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static int i_mdi_pi_offline(mdi_pathinfo_t *, int);
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static dev_info_t *i_mdi_devinfo_create(mdi_vhci_t *, char *, char *,
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878
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char **, int);
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0
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static dev_info_t *i_mdi_devinfo_find(mdi_vhci_t *, char *, char *);
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static int i_mdi_devinfo_remove(dev_info_t *, dev_info_t *, int);
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static int i_mdi_is_child_present(dev_info_t *, dev_info_t *);
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878
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static mdi_client_t *i_mdi_client_alloc(mdi_vhci_t *, char *, char *);
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0
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static void i_mdi_client_enlist_table(mdi_vhci_t *, mdi_client_t *);
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static void i_mdi_client_delist_table(mdi_vhci_t *, mdi_client_t *);
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878
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static mdi_client_t *i_mdi_client_find(mdi_vhci_t *, char *, char *);
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0
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static void i_mdi_client_update_state(mdi_client_t *);
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static int i_mdi_client_compute_state(mdi_client_t *,
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mdi_phci_t *);
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static void i_mdi_client_lock(mdi_client_t *, mdi_pathinfo_t *);
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static void i_mdi_client_unlock(mdi_client_t *);
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static int i_mdi_client_free(mdi_vhci_t *, mdi_client_t *);
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static mdi_client_t *i_devi_get_client(dev_info_t *);
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static int i_mdi_pi_enable_disable(dev_info_t *, dev_info_t *, int,
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int);
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/*
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* Failover related function prototypes
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*/
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static int i_mdi_failover(void *);
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/*
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* misc internal functions
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*/
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static int i_mdi_get_hash_key(char *);
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static int i_map_nvlist_error_to_mdi(int);
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static void i_mdi_report_path_state(mdi_client_t *,
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mdi_pathinfo_t *);
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878
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static void setup_vhci_cache(mdi_vhci_t *);
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static int destroy_vhci_cache(mdi_vhci_t *);
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static void setup_phci_driver_list(mdi_vhci_t *);
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static void free_phci_driver_list(mdi_vhci_config_t *);
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static int stop_vhcache_async_threads(mdi_vhci_config_t *);
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static boolean_t stop_vhcache_flush_thread(void *, int);
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static void free_string_array(char **, int);
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static void free_vhcache_phci(mdi_vhcache_phci_t *);
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static void free_vhcache_pathinfo(mdi_vhcache_pathinfo_t *);
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static void free_vhcache_client(mdi_vhcache_client_t *);
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static int mainnvl_to_vhcache(mdi_vhci_cache_t *, nvlist_t *);
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static nvlist_t *vhcache_to_mainnvl(mdi_vhci_cache_t *);
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static void vhcache_phci_add(mdi_vhci_config_t *, mdi_phci_t *);
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static void vhcache_phci_remove(mdi_vhci_config_t *, mdi_phci_t *);
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static void vhcache_pi_add(mdi_vhci_config_t *,
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struct mdi_pathinfo *);
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static void vhcache_pi_remove(mdi_vhci_config_t *,
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struct mdi_pathinfo *);
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static void free_phclient_path_list(mdi_phys_path_t *);
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static void sort_vhcache_paths(mdi_vhcache_client_t *);
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static int flush_vhcache(mdi_vhci_config_t *, int);
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static void vhcache_dirty(mdi_vhci_config_t *);
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static void free_async_client_config(mdi_async_client_config_t *);
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static nvlist_t *read_on_disk_vhci_cache(char *);
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extern int fread_nvlist(char *, nvlist_t **);
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extern int fwrite_nvlist(char *, nvlist_t *);
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0
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/* called once when first vhci registers with mdi */
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static void
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i_mdi_init()
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{
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static int initialized = 0;
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if (initialized)
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return;
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initialized = 1;
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mutex_init(&mdi_mutex, NULL, MUTEX_DEFAULT, NULL);
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/*
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* Create our taskq resources
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*/
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mdi_taskq = taskq_create("mdi_taskq", mdi_taskq_n_threads,
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MDI_TASKQ_PRI, MDI_TASKQ_MINALLOC, MDI_TASKQ_MAXALLOC,
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TASKQ_PREPOPULATE | TASKQ_CPR_SAFE);
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ASSERT(mdi_taskq != NULL); /* taskq_create never fails */
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}
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/*
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* mdi_get_component_type():
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* Return mpxio component type
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* Return Values:
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* MDI_COMPONENT_NONE
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* MDI_COMPONENT_VHCI
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* MDI_COMPONENT_PHCI
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* MDI_COMPONENT_CLIENT
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* XXX This doesn't work under multi-level MPxIO and should be
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* removed when clients migrate mdi_is_*() interfaces.
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*/
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300 |
int
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301 |
mdi_get_component_type(dev_info_t *dip)
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{
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return (DEVI(dip)->devi_mdi_component);
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}
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/*
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307 |
* mdi_vhci_register():
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|
308 |
* Register a vHCI module with the mpxio framework
|
|
|
309 |
* mdi_vhci_register() is called by vHCI drivers to register the
|
|
|
310 |
* 'class_driver' vHCI driver and its MDI entrypoints with the
|
|
|
311 |
* mpxio framework. The vHCI driver must call this interface as
|
|
|
312 |
* part of its attach(9e) handler.
|
|
|
313 |
* Competing threads may try to attach mdi_vhci_register() as
|
|
|
314 |
* the vHCI drivers are loaded and attached as a result of pHCI
|
|
|
315 |
* driver instance registration (mdi_phci_register()) with the
|
|
|
316 |
* framework.
|
|
|
317 |
* Return Values:
|
|
|
318 |
* MDI_SUCCESS
|
|
|
319 |
* MDI_FAILURE
|
|
|
320 |
*/
|
|
|
321 |
|
|
|
322 |
/*ARGSUSED*/
|
|
|
323 |
int
|
|
|
324 |
mdi_vhci_register(char *class, dev_info_t *vdip, mdi_vhci_ops_t *vops,
|
|
|
325 |
int flags)
|
|
|
326 |
{
|
|
|
327 |
mdi_vhci_t *vh = NULL;
|
|
|
328 |
|
|
|
329 |
ASSERT(vops->vo_revision == MDI_VHCI_OPS_REV);
|
|
|
330 |
|
|
|
331 |
i_mdi_init();
|
|
|
332 |
|
|
|
333 |
mutex_enter(&mdi_mutex);
|
|
|
334 |
/*
|
|
|
335 |
* Scan for already registered vhci
|
|
|
336 |
*/
|
|
|
337 |
for (vh = mdi_vhci_head; vh != NULL; vh = vh->vh_next) {
|
|
|
338 |
if (strcmp(vh->vh_class, class) == 0) {
|
|
|
339 |
/*
|
|
|
340 |
* vHCI has already been created. Check for valid
|
|
|
341 |
* vHCI ops registration. We only support one vHCI
|
|
|
342 |
* module per class
|
|
|
343 |
*/
|
|
|
344 |
if (vh->vh_ops != NULL) {
|
|
|
345 |
mutex_exit(&mdi_mutex);
|
|
|
346 |
cmn_err(CE_NOTE, vhci_greeting, class);
|
|
|
347 |
return (MDI_FAILURE);
|
|
|
348 |
}
|
|
|
349 |
break;
|
|
|
350 |
}
|
|
|
351 |
}
|
|
|
352 |
|
|
|
353 |
/*
|
|
|
354 |
* if not yet created, create the vHCI component
|
|
|
355 |
*/
|
|
|
356 |
if (vh == NULL) {
|
|
|
357 |
struct client_hash *hash = NULL;
|
|
|
358 |
char *load_balance;
|
|
|
359 |
|
|
|
360 |
/*
|
|
|
361 |
* Allocate and initialize the mdi extensions
|
|
|
362 |
*/
|
|
|
363 |
vh = kmem_zalloc(sizeof (mdi_vhci_t), KM_SLEEP);
|
|
|
364 |
hash = kmem_zalloc(mdi_client_table_size * sizeof (*hash),
|
|
|
365 |
KM_SLEEP);
|
|
|
366 |
vh->vh_client_table = hash;
|
|
|
367 |
vh->vh_class = kmem_zalloc(strlen(class) + 1, KM_SLEEP);
|
|
|
368 |
(void) strcpy(vh->vh_class, class);
|
|
|
369 |
vh->vh_lb = LOAD_BALANCE_RR;
|
|
|
370 |
if (ddi_prop_lookup_string(DDI_DEV_T_ANY, vdip,
|
|
|
371 |
0, LOAD_BALANCE_PROP, &load_balance) == DDI_SUCCESS) {
|
|
|
372 |
if (strcmp(load_balance, LOAD_BALANCE_PROP_NONE) == 0) {
|
|
|
373 |
vh->vh_lb = LOAD_BALANCE_NONE;
|
|
|
374 |
} else if (strcmp(load_balance, LOAD_BALANCE_PROP_LBA)
|
|
|
375 |
== 0) {
|
|
|
376 |
vh->vh_lb = LOAD_BALANCE_LBA;
|
|
|
377 |
}
|
|
|
378 |
ddi_prop_free(load_balance);
|
|
|
379 |
}
|
|
|
380 |
|
|
|
381 |
/*
|
|
|
382 |
* Store the vHCI ops vectors
|
|
|
383 |
*/
|
|
|
384 |
vh->vh_dip = vdip;
|
|
|
385 |
vh->vh_ops = vops;
|
|
|
386 |
|
|
878
|
387 |
setup_vhci_cache(vh);
|
|
0
|
388 |
|
|
|
389 |
if (mdi_vhci_head == NULL) {
|
|
|
390 |
mdi_vhci_head = vh;
|
|
|
391 |
}
|
|
|
392 |
if (mdi_vhci_tail) {
|
|
|
393 |
mdi_vhci_tail->vh_next = vh;
|
|
|
394 |
}
|
|
|
395 |
mdi_vhci_tail = vh;
|
|
|
396 |
mdi_vhci_count++;
|
|
|
397 |
}
|
|
|
398 |
|
|
|
399 |
/*
|
|
|
400 |
* Claim the devfs node as a vhci component
|
|
|
401 |
*/
|
|
|
402 |
DEVI(vdip)->devi_mdi_component |= MDI_COMPONENT_VHCI;
|
|
|
403 |
|
|
|
404 |
/*
|
|
|
405 |
* Initialize our back reference from dev_info node
|
|
|
406 |
*/
|
|
|
407 |
DEVI(vdip)->devi_mdi_xhci = (caddr_t)vh;
|
|
|
408 |
mutex_exit(&mdi_mutex);
|
|
|
409 |
return (MDI_SUCCESS);
|
|
|
410 |
}
|
|
|
411 |
|
|
|
412 |
/*
|
|
|
413 |
* mdi_vhci_unregister():
|
|
|
414 |
* Unregister a vHCI module from mpxio framework
|
|
|
415 |
* mdi_vhci_unregister() is called from the detach(9E) entrypoint
|
|
|
416 |
* of a vhci to unregister it from the framework.
|
|
|
417 |
* Return Values:
|
|
|
418 |
* MDI_SUCCESS
|
|
|
419 |
* MDI_FAILURE
|
|
|
420 |
*/
|
|
|
421 |
|
|
|
422 |
/*ARGSUSED*/
|
|
|
423 |
int
|
|
|
424 |
mdi_vhci_unregister(dev_info_t *vdip, int flags)
|
|
|
425 |
{
|
|
|
426 |
mdi_vhci_t *found, *vh, *prev = NULL;
|
|
|
427 |
|
|
|
428 |
/*
|
|
|
429 |
* Check for invalid VHCI
|
|
|
430 |
*/
|
|
|
431 |
if ((vh = i_devi_get_vhci(vdip)) == NULL)
|
|
|
432 |
return (MDI_FAILURE);
|
|
|
433 |
|
|
|
434 |
mutex_enter(&mdi_mutex);
|
|
|
435 |
|
|
|
436 |
/*
|
|
|
437 |
* Scan the list of registered vHCIs for a match
|
|
|
438 |
*/
|
|
|
439 |
for (found = mdi_vhci_head; found != NULL; found = found->vh_next) {
|
|
|
440 |
if (found == vh)
|
|
|
441 |
break;
|
|
|
442 |
prev = found;
|
|
|
443 |
}
|
|
|
444 |
|
|
|
445 |
if (found == NULL) {
|
|
|
446 |
mutex_exit(&mdi_mutex);
|
|
|
447 |
return (MDI_FAILURE);
|
|
|
448 |
}
|
|
|
449 |
|
|
|
450 |
/*
|
|
|
451 |
* Check the pHCI and client count. All the pHCIs and clients
|
|
|
452 |
* should have been unregistered, before a vHCI can be
|
|
|
453 |
* unregistered.
|
|
|
454 |
*/
|
|
878
|
455 |
if (vh->vh_phci_count || vh->vh_client_count || vh->vh_refcnt) {
|
|
0
|
456 |
mutex_exit(&mdi_mutex);
|
|
|
457 |
return (MDI_FAILURE);
|
|
|
458 |
}
|
|
|
459 |
|
|
|
460 |
/*
|
|
|
461 |
* Remove the vHCI from the global list
|
|
|
462 |
*/
|
|
|
463 |
if (vh == mdi_vhci_head) {
|
|
|
464 |
mdi_vhci_head = vh->vh_next;
|
|
|
465 |
} else {
|
|
|
466 |
prev->vh_next = vh->vh_next;
|
|
|
467 |
}
|
|
|
468 |
if (vh == mdi_vhci_tail) {
|
|
|
469 |
mdi_vhci_tail = prev;
|
|
|
470 |
}
|
|
|
471 |
|
|
|
472 |
mdi_vhci_count--;
|
|
|
473 |
mutex_exit(&mdi_mutex);
|
|
878
|
474 |
|
|
|
475 |
if (destroy_vhci_cache(vh) != MDI_SUCCESS) {
|
|
|
476 |
/* add vhci to the global list */
|
|
|
477 |
mutex_enter(&mdi_mutex);
|
|
|
478 |
if (mdi_vhci_head == NULL)
|
|
|
479 |
mdi_vhci_head = vh;
|
|
|
480 |
else
|
|
|
481 |
mdi_vhci_tail->vh_next = vh;
|
|
|
482 |
mdi_vhci_tail = vh;
|
|
|
483 |
mdi_vhci_count++;
|
|
|
484 |
mutex_exit(&mdi_mutex);
|
|
|
485 |
return (MDI_FAILURE);
|
|
|
486 |
}
|
|
|
487 |
|
|
|
488 |
vh->vh_ops = NULL;
|
|
0
|
489 |
DEVI(vdip)->devi_mdi_component &= ~MDI_COMPONENT_VHCI;
|
|
|
490 |
DEVI(vdip)->devi_mdi_xhci = NULL;
|
|
|
491 |
kmem_free(vh->vh_class, strlen(vh->vh_class)+1);
|
|
|
492 |
kmem_free(vh->vh_client_table,
|
|
|
493 |
mdi_client_table_size * sizeof (struct client_hash));
|
|
|
494 |
kmem_free(vh, sizeof (mdi_vhci_t));
|
|
|
495 |
return (MDI_SUCCESS);
|
|
|
496 |
}
|
|
|
497 |
|
|
|
498 |
/*
|
|
|
499 |
* i_mdi_vhci_class2vhci():
|
|
|
500 |
* Look for a matching vHCI module given a vHCI class name
|
|
|
501 |
* Return Values:
|
|
|
502 |
* Handle to a vHCI component
|
|
|
503 |
* NULL
|
|
|
504 |
*/
|
|
|
505 |
static mdi_vhci_t *
|
|
|
506 |
i_mdi_vhci_class2vhci(char *class)
|
|
|
507 |
{
|
|
|
508 |
mdi_vhci_t *vh = NULL;
|
|
|
509 |
|
|
|
510 |
ASSERT(!MUTEX_HELD(&mdi_mutex));
|
|
|
511 |
|
|
|
512 |
mutex_enter(&mdi_mutex);
|
|
|
513 |
for (vh = mdi_vhci_head; vh != NULL; vh = vh->vh_next) {
|
|
|
514 |
if (strcmp(vh->vh_class, class) == 0) {
|
|
|
515 |
break;
|
|
|
516 |
}
|
|
|
517 |
}
|
|
|
518 |
mutex_exit(&mdi_mutex);
|
|
|
519 |
return (vh);
|
|
|
520 |
}
|
|
|
521 |
|
|
|
522 |
/*
|
|
|
523 |
* i_devi_get_vhci():
|
|
|
524 |
* Utility function to get the handle to a vHCI component
|
|
|
525 |
* Return Values:
|
|
|
526 |
* Handle to a vHCI component
|
|
|
527 |
* NULL
|
|
|
528 |
*/
|
|
|
529 |
mdi_vhci_t *
|
|
|
530 |
i_devi_get_vhci(dev_info_t *vdip)
|
|
|
531 |
{
|
|
|
532 |
mdi_vhci_t *vh = NULL;
|
|
|
533 |
if (MDI_VHCI(vdip)) {
|
|
|
534 |
vh = (mdi_vhci_t *)DEVI(vdip)->devi_mdi_xhci;
|
|
|
535 |
}
|
|
|
536 |
return (vh);
|
|
|
537 |
}
|
|
|
538 |
|
|
|
539 |
/*
|
|
|
540 |
* mdi_phci_register():
|
|
|
541 |
* Register a pHCI module with mpxio framework
|
|
|
542 |
* mdi_phci_register() is called by pHCI drivers to register with
|
|
|
543 |
* the mpxio framework and a specific 'class_driver' vHCI. The
|
|
|
544 |
* pHCI driver must call this interface as part of its attach(9e)
|
|
|
545 |
* handler.
|
|
|
546 |
* Return Values:
|
|
|
547 |
* MDI_SUCCESS
|
|
|
548 |
* MDI_FAILURE
|
|
|
549 |
*/
|
|
|
550 |
|
|
|
551 |
/*ARGSUSED*/
|
|
|
552 |
int
|
|
|
553 |
mdi_phci_register(char *class, dev_info_t *pdip, int flags)
|
|
|
554 |
{
|
|
|
555 |
mdi_phci_t *ph;
|
|
|
556 |
mdi_vhci_t *vh;
|
|
|
557 |
char *data;
|
|
|
558 |
char *pathname;
|
|
|
559 |
|
|
|
560 |
pathname = kmem_zalloc(MAXPATHLEN, KM_SLEEP);
|
|
|
561 |
(void) ddi_pathname(pdip, pathname);
|
|
|
562 |
|
|
|
563 |
/*
|
|
|
564 |
* Check for mpxio-disable property. Enable mpxio if the property is
|
|
|
565 |
* missing or not set to "yes".
|
|
|
566 |
* If the property is set to "yes" then emit a brief message.
|
|
|
567 |
*/
|
|
|
568 |
if ((ddi_prop_lookup_string(DDI_DEV_T_ANY, pdip, 0, "mpxio-disable",
|
|
|
569 |
&data) == DDI_SUCCESS)) {
|
|
|
570 |
if (strcmp(data, "yes") == 0) {
|
|
|
571 |
MDI_DEBUG(1, (CE_CONT, pdip,
|
|
|
572 |
"?%s (%s%d) multipath capabilities "
|
|
|
573 |
"disabled via %s.conf.\n", pathname,
|
|
|
574 |
ddi_driver_name(pdip), ddi_get_instance(pdip),
|
|
|
575 |
ddi_driver_name(pdip)));
|
|
|
576 |
ddi_prop_free(data);
|
|
|
577 |
kmem_free(pathname, MAXPATHLEN);
|
|
|
578 |
return (MDI_FAILURE);
|
|
|
579 |
}
|
|
|
580 |
ddi_prop_free(data);
|
|
|
581 |
}
|
|
|
582 |
|
|
|
583 |
kmem_free(pathname, MAXPATHLEN);
|
|
|
584 |
|
|
|
585 |
/*
|
|
|
586 |
* Search for a matching vHCI
|
|
|
587 |
*/
|
|
|
588 |
vh = (mdi_vhci_t *)i_mdi_vhci_class2vhci(class);
|
|
|
589 |
if (vh == NULL) {
|
|
|
590 |
return (MDI_FAILURE);
|
|
|
591 |
}
|
|
|
592 |
|
|
|
593 |
ph = kmem_zalloc(sizeof (mdi_phci_t), KM_SLEEP);
|
|
|
594 |
mutex_init(&ph->ph_mutex, NULL, MUTEX_DEFAULT, NULL);
|
|
|
595 |
ph->ph_dip = pdip;
|
|
|
596 |
ph->ph_vhci = vh;
|
|
|
597 |
ph->ph_next = NULL;
|
|
|
598 |
ph->ph_unstable = 0;
|
|
|
599 |
ph->ph_vprivate = 0;
|
|
|
600 |
cv_init(&ph->ph_unstable_cv, NULL, CV_DRIVER, NULL);
|
|
|
601 |
cv_init(&ph->ph_powerchange_cv, NULL, CV_DRIVER, NULL);
|
|
|
602 |
|
|
|
603 |
MDI_PHCI_SET_POWER_UP(ph);
|
|
|
604 |
DEVI(pdip)->devi_mdi_component |= MDI_COMPONENT_PHCI;
|
|
|
605 |
DEVI(pdip)->devi_mdi_xhci = (caddr_t)ph;
|
|
|
606 |
|
|
878
|
607 |
vhcache_phci_add(vh->vh_config, ph);
|
|
|
608 |
|
|
0
|
609 |
mutex_enter(&mdi_mutex);
|
|
|
610 |
if (vh->vh_phci_head == NULL) {
|
|
|
611 |
vh->vh_phci_head = ph;
|
|
|
612 |
}
|
|
|
613 |
if (vh->vh_phci_tail) {
|
|
|
614 |
vh->vh_phci_tail->ph_next = ph;
|
|
|
615 |
}
|
|
|
616 |
vh->vh_phci_tail = ph;
|
|
|
617 |
vh->vh_phci_count++;
|
|
|
618 |
mutex_exit(&mdi_mutex);
|
|
|
619 |
return (MDI_SUCCESS);
|
|
|
620 |
}
|
|
|
621 |
|
|
|
622 |
/*
|
|
|
623 |
* mdi_phci_unregister():
|
|
|
624 |
* Unregister a pHCI module from mpxio framework
|
|
|
625 |
* mdi_phci_unregister() is called by the pHCI drivers from their
|
|
|
626 |
* detach(9E) handler to unregister their instances from the
|
|
|
627 |
* framework.
|
|
|
628 |
* Return Values:
|
|
|
629 |
* MDI_SUCCESS
|
|
|
630 |
* MDI_FAILURE
|
|
|
631 |
*/
|
|
|
632 |
|
|
|
633 |
/*ARGSUSED*/
|
|
|
634 |
int
|
|
|
635 |
mdi_phci_unregister(dev_info_t *pdip, int flags)
|
|
|
636 |
{
|
|
|
637 |
mdi_vhci_t *vh;
|
|
|
638 |
mdi_phci_t *ph;
|
|
|
639 |
mdi_phci_t *tmp;
|
|
|
640 |
mdi_phci_t *prev = NULL;
|
|
|
641 |
|
|
|
642 |
ph = i_devi_get_phci(pdip);
|
|
|
643 |
if (ph == NULL) {
|
|
|
644 |
MDI_DEBUG(1, (CE_WARN, pdip,
|
|
|
645 |
"!pHCI unregister: Not a valid pHCI"));
|
|
|
646 |
return (MDI_FAILURE);
|
|
|
647 |
}
|
|
|
648 |
|
|
|
649 |
vh = ph->ph_vhci;
|
|
|
650 |
ASSERT(vh != NULL);
|
|
|
651 |
if (vh == NULL) {
|
|
|
652 |
MDI_DEBUG(1, (CE_WARN, pdip,
|
|
|
653 |
"!pHCI unregister: Not a valid vHCI"));
|
|
|
654 |
return (MDI_FAILURE);
|
|
|
655 |
}
|
|
|
656 |
|
|
|
657 |
mutex_enter(&mdi_mutex);
|
|
|
658 |
tmp = vh->vh_phci_head;
|
|
|
659 |
while (tmp) {
|
|
|
660 |
if (tmp == ph) {
|
|
|
661 |
break;
|
|
|
662 |
}
|
|
|
663 |
prev = tmp;
|
|
|
664 |
tmp = tmp->ph_next;
|
|
|
665 |
}
|
|
|
666 |
|
|
|
667 |
if (ph == vh->vh_phci_head) {
|
|
|
668 |
vh->vh_phci_head = ph->ph_next;
|
|
|
669 |
} else {
|
|
|
670 |
prev->ph_next = ph->ph_next;
|
|
|
671 |
}
|
|
|
672 |
|
|
|
673 |
if (ph == vh->vh_phci_tail) {
|
|
|
674 |
vh->vh_phci_tail = prev;
|
|
|
675 |
}
|
|
|
676 |
|
|
|
677 |
vh->vh_phci_count--;
|
|
|
678 |
|
|
|
679 |
mutex_exit(&mdi_mutex);
|
|
|
680 |
|
|
878
|
681 |
vhcache_phci_remove(vh->vh_config, ph);
|
|
0
|
682 |
cv_destroy(&ph->ph_unstable_cv);
|
|
|
683 |
cv_destroy(&ph->ph_powerchange_cv);
|
|
|
684 |
mutex_destroy(&ph->ph_mutex);
|
|
|
685 |
kmem_free(ph, sizeof (mdi_phci_t));
|
|
|
686 |
DEVI(pdip)->devi_mdi_component &= ~MDI_COMPONENT_PHCI;
|
|
|
687 |
DEVI(pdip)->devi_mdi_xhci = NULL;
|
|
|
688 |
return (MDI_SUCCESS);
|
|
|
689 |
}
|
|
|
690 |
|
|
|
691 |
/*
|
|
|
692 |
* i_devi_get_phci():
|
|
|
693 |
* Utility function to return the phci extensions.
|
|
|
694 |
*/
|
|
|
695 |
static mdi_phci_t *
|
|
|
696 |
i_devi_get_phci(dev_info_t *pdip)
|
|
|
697 |
{
|
|
|
698 |
mdi_phci_t *ph = NULL;
|
|
|
699 |
if (MDI_PHCI(pdip)) {
|
|
|
700 |
ph = (mdi_phci_t *)DEVI(pdip)->devi_mdi_xhci;
|
|
|
701 |
}
|
|
|
702 |
return (ph);
|
|
|
703 |
}
|
|
|
704 |
|
|
|
705 |
/*
|
|
|
706 |
* mdi_phci_path2devinfo():
|
|
|
707 |
* Utility function to search for a valid phci device given
|
|
|
708 |
* the devfs pathname.
|
|
|
709 |
*/
|
|
|
710 |
|
|
|
711 |
dev_info_t *
|
|
|
712 |
mdi_phci_path2devinfo(dev_info_t *vdip, caddr_t pathname)
|
|
|
713 |
{
|
|
|
714 |
char *temp_pathname;
|
|
|
715 |
mdi_vhci_t *vh;
|
|
|
716 |
mdi_phci_t *ph;
|
|
|
717 |
dev_info_t *pdip = NULL;
|
|
|
718 |
|
|
|
719 |
vh = i_devi_get_vhci(vdip);
|
|
|
720 |
ASSERT(vh != NULL);
|
|
|
721 |
|
|
|
722 |
if (vh == NULL) {
|
|
|
723 |
/*
|
|
|
724 |
* Invalid vHCI component, return failure
|
|
|
725 |
*/
|
|
|
726 |
return (NULL);
|
|
|
727 |
}
|
|
|
728 |
|
|
|
729 |
temp_pathname = kmem_zalloc(MAXPATHLEN, KM_SLEEP);
|
|
|
730 |
mutex_enter(&mdi_mutex);
|
|
|
731 |
ph = vh->vh_phci_head;
|
|
|
732 |
while (ph != NULL) {
|
|
|
733 |
pdip = ph->ph_dip;
|
|
|
734 |
ASSERT(pdip != NULL);
|
|
|
735 |
*temp_pathname = '\0';
|
|
|
736 |
(void) ddi_pathname(pdip, temp_pathname);
|
|
|
737 |
if (strcmp(temp_pathname, pathname) == 0) {
|
|
|
738 |
break;
|
|
|
739 |
}
|
|
|
740 |
ph = ph->ph_next;
|
|
|
741 |
}
|
|
|
742 |
if (ph == NULL) {
|
|
|
743 |
pdip = NULL;
|
|
|
744 |
}
|
|
|
745 |
mutex_exit(&mdi_mutex);
|
|
|
746 |
kmem_free(temp_pathname, MAXPATHLEN);
|
|
|
747 |
return (pdip);
|
|
|
748 |
}
|
|
|
749 |
|
|
|
750 |
/*
|
|
|
751 |
* mdi_phci_get_path_count():
|
|
|
752 |
* get number of path information nodes associated with a given
|
|
|
753 |
* pHCI device.
|
|
|
754 |
*/
|
|
|
755 |
int
|
|
|
756 |
mdi_phci_get_path_count(dev_info_t *pdip)
|
|
|
757 |
{
|
|
|
758 |
mdi_phci_t *ph;
|
|
|
759 |
int count = 0;
|
|
|
760 |
|
|
|
761 |
ph = i_devi_get_phci(pdip);
|
|
|
762 |
if (ph != NULL) {
|
|
|
763 |
count = ph->ph_path_count;
|
|
|
764 |
}
|
|
|
765 |
return (count);
|
|
|
766 |
}
|
|
|
767 |
|
|
|
768 |
/*
|
|
|
769 |
* i_mdi_phci_lock():
|
|
|
770 |
* Lock a pHCI device
|
|
|
771 |
* Return Values:
|
|
|
772 |
* None
|
|
|
773 |
* Note:
|
|
|
774 |
* The default locking order is:
|
|
|
775 |
* _NOTE(LOCK_ORDER(mdi_phci::ph_mutex mdi_pathinfo::pi_mutex))
|
|
|
776 |
* But there are number of situations where locks need to be
|
|
|
777 |
* grabbed in reverse order. This routine implements try and lock
|
|
|
778 |
* mechanism depending on the requested parameter option.
|
|
|
779 |
*/
|
|
|
780 |
static void
|
|
|
781 |
i_mdi_phci_lock(mdi_phci_t *ph, mdi_pathinfo_t *pip)
|
|
|
782 |
{
|
|
|
783 |
if (pip) {
|
|
|
784 |
/* Reverse locking is requested. */
|
|
|
785 |
while (MDI_PHCI_TRYLOCK(ph) == 0) {
|
|
|
786 |
/*
|
|
|
787 |
* tryenter failed. Try to grab again
|
|
|
788 |
* after a small delay
|
|
|
789 |
*/
|
|
|
790 |
MDI_PI_HOLD(pip);
|
|
|
791 |
MDI_PI_UNLOCK(pip);
|
|
|
792 |
delay(1);
|
|
|
793 |
MDI_PI_LOCK(pip);
|
|
|
794 |
MDI_PI_RELE(pip);
|
|
|
795 |
}
|
|
|
796 |
} else {
|
|
|
797 |
MDI_PHCI_LOCK(ph);
|
|
|
798 |
}
|
|
|
799 |
}
|
|
|
800 |
|
|
|
801 |
/*
|
|
|
802 |
* i_mdi_phci_get_client_lock():
|
|
|
803 |
* Lock a pHCI device
|
|
|
804 |
* Return Values:
|
|
|
805 |
* None
|
|
|
806 |
* Note:
|
|
|
807 |
* The default locking order is:
|
|
|
808 |
* _NOTE(LOCK_ORDER(mdi_phci::ph_mutex mdi_client::ct_mutex))
|
|
|
809 |
* But there are number of situations where locks need to be
|
|
|
810 |
* grabbed in reverse order. This routine implements try and lock
|
|
|
811 |
* mechanism depending on the requested parameter option.
|
|
|
812 |
*/
|
|
|
813 |
static void
|
|
|
814 |
i_mdi_phci_get_client_lock(mdi_phci_t *ph, mdi_client_t *ct)
|
|
|
815 |
{
|
|
|
816 |
if (ct) {
|
|
|
817 |
/* Reverse locking is requested. */
|
|
|
818 |
while (MDI_PHCI_TRYLOCK(ph) == 0) {
|
|
|
819 |
/*
|
|
|
820 |
* tryenter failed. Try to grab again
|
|
|
821 |
* after a small delay
|
|
|
822 |
*/
|
|
|
823 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
824 |
delay(1);
|
|
|
825 |
MDI_CLIENT_LOCK(ct);
|
|
|
826 |
}
|
|
|
827 |
} else {
|
|
|
828 |
MDI_PHCI_LOCK(ph);
|
|
|
829 |
}
|
|
|
830 |
}
|
|
|
831 |
|
|
|
832 |
/*
|
|
|
833 |
* i_mdi_phci_unlock():
|
|
|
834 |
* Unlock the pHCI component
|
|
|
835 |
*/
|
|
|
836 |
static void
|
|
|
837 |
i_mdi_phci_unlock(mdi_phci_t *ph)
|
|
|
838 |
{
|
|
|
839 |
MDI_PHCI_UNLOCK(ph);
|
|
|
840 |
}
|
|
|
841 |
|
|
|
842 |
/*
|
|
|
843 |
* i_mdi_devinfo_create():
|
|
|
844 |
* create client device's devinfo node
|
|
|
845 |
* Return Values:
|
|
|
846 |
* dev_info
|
|
|
847 |
* NULL
|
|
|
848 |
* Notes:
|
|
|
849 |
*/
|
|
|
850 |
static dev_info_t *
|
|
|
851 |
i_mdi_devinfo_create(mdi_vhci_t *vh, char *name, char *guid,
|
|
878
|
852 |
char **compatible, int ncompatible)
|
|
0
|
853 |
{
|
|
|
854 |
dev_info_t *cdip = NULL;
|
|
|
855 |
|
|
|
856 |
ASSERT(MUTEX_HELD(&mdi_mutex));
|
|
|
857 |
|
|
|
858 |
/* Verify for duplicate entry */
|
|
|
859 |
cdip = i_mdi_devinfo_find(vh, name, guid);
|
|
|
860 |
ASSERT(cdip == NULL);
|
|
|
861 |
if (cdip) {
|
|
|
862 |
cmn_err(CE_WARN,
|
|
|
863 |
"i_mdi_devinfo_create: client dip %p already exists",
|
|
|
864 |
(void *)cdip);
|
|
|
865 |
}
|
|
|
866 |
|
|
878
|
867 |
ndi_devi_alloc_sleep(vh->vh_dip, name, DEVI_SID_NODEID, &cdip);
|
|
0
|
868 |
if (cdip == NULL)
|
|
|
869 |
goto fail;
|
|
|
870 |
|
|
|
871 |
/*
|
|
|
872 |
* Create component type and Global unique identifier
|
|
|
873 |
* properties
|
|
|
874 |
*/
|
|
|
875 |
if (ndi_prop_update_string(DDI_DEV_T_NONE, cdip,
|
|
|
876 |
MDI_CLIENT_GUID_PROP, guid) != DDI_PROP_SUCCESS) {
|
|
|
877 |
goto fail;
|
|
|
878 |
}
|
|
|
879 |
|
|
|
880 |
/* Decorate the node with compatible property */
|
|
|
881 |
if (compatible &&
|
|
|
882 |
(ndi_prop_update_string_array(DDI_DEV_T_NONE, cdip,
|
|
|
883 |
"compatible", compatible, ncompatible) != DDI_PROP_SUCCESS)) {
|
|
|
884 |
goto fail;
|
|
|
885 |
}
|
|
|
886 |
|
|
|
887 |
return (cdip);
|
|
|
888 |
|
|
|
889 |
fail:
|
|
|
890 |
if (cdip) {
|
|
|
891 |
(void) ndi_prop_remove_all(cdip);
|
|
|
892 |
(void) ndi_devi_free(cdip);
|
|
|
893 |
}
|
|
|
894 |
return (NULL);
|
|
|
895 |
}
|
|
|
896 |
|
|
|
897 |
/*
|
|
|
898 |
* i_mdi_devinfo_find():
|
|
|
899 |
* Find a matching devinfo node for given client node name
|
|
|
900 |
* and its guid.
|
|
|
901 |
* Return Values:
|
|
|
902 |
* Handle to a dev_info node or NULL
|
|
|
903 |
*/
|
|
|
904 |
|
|
|
905 |
static dev_info_t *
|
|
|
906 |
i_mdi_devinfo_find(mdi_vhci_t *vh, caddr_t name, char *guid)
|
|
|
907 |
{
|
|
|
908 |
char *data;
|
|
|
909 |
dev_info_t *cdip = NULL;
|
|
|
910 |
dev_info_t *ndip = NULL;
|
|
|
911 |
int circular;
|
|
|
912 |
|
|
|
913 |
ndi_devi_enter(vh->vh_dip, &circular);
|
|
|
914 |
ndip = (dev_info_t *)DEVI(vh->vh_dip)->devi_child;
|
|
|
915 |
while ((cdip = ndip) != NULL) {
|
|
|
916 |
ndip = (dev_info_t *)DEVI(cdip)->devi_sibling;
|
|
|
917 |
|
|
|
918 |
if (strcmp(DEVI(cdip)->devi_node_name, name)) {
|
|
|
919 |
continue;
|
|
|
920 |
}
|
|
|
921 |
|
|
|
922 |
if (ddi_prop_lookup_string(DDI_DEV_T_ANY, cdip,
|
|
|
923 |
DDI_PROP_DONTPASS, MDI_CLIENT_GUID_PROP,
|
|
|
924 |
&data) != DDI_PROP_SUCCESS) {
|
|
|
925 |
continue;
|
|
|
926 |
}
|
|
|
927 |
|
|
|
928 |
if (strcmp(data, guid) != 0) {
|
|
|
929 |
ddi_prop_free(data);
|
|
|
930 |
continue;
|
|
|
931 |
}
|
|
|
932 |
ddi_prop_free(data);
|
|
|
933 |
break;
|
|
|
934 |
}
|
|
|
935 |
ndi_devi_exit(vh->vh_dip, circular);
|
|
|
936 |
return (cdip);
|
|
|
937 |
}
|
|
|
938 |
|
|
|
939 |
/*
|
|
|
940 |
* i_mdi_devinfo_remove():
|
|
|
941 |
* Remove a client device node
|
|
|
942 |
*/
|
|
|
943 |
static int
|
|
|
944 |
i_mdi_devinfo_remove(dev_info_t *vdip, dev_info_t *cdip, int flags)
|
|
|
945 |
{
|
|
|
946 |
int rv = MDI_SUCCESS;
|
|
|
947 |
if (i_mdi_is_child_present(vdip, cdip) == MDI_SUCCESS ||
|
|
|
948 |
(flags & MDI_CLIENT_FLAGS_DEV_NOT_SUPPORTED)) {
|
|
|
949 |
rv = ndi_devi_offline(cdip, NDI_DEVI_REMOVE);
|
|
|
950 |
if (rv != NDI_SUCCESS) {
|
|
|
951 |
MDI_DEBUG(1, (CE_NOTE, NULL, "!i_mdi_devinfo_remove:"
|
|
|
952 |
" failed. cdip = %p\n", cdip));
|
|
|
953 |
}
|
|
|
954 |
/*
|
|
|
955 |
* Convert to MDI error code
|
|
|
956 |
*/
|
|
|
957 |
switch (rv) {
|
|
|
958 |
case NDI_SUCCESS:
|
|
|
959 |
rv = MDI_SUCCESS;
|
|
|
960 |
break;
|
|
|
961 |
case NDI_BUSY:
|
|
|
962 |
rv = MDI_BUSY;
|
|
|
963 |
break;
|
|
|
964 |
default:
|
|
|
965 |
rv = MDI_FAILURE;
|
|
|
966 |
break;
|
|
|
967 |
}
|
|
|
968 |
}
|
|
|
969 |
return (rv);
|
|
|
970 |
}
|
|
|
971 |
|
|
|
972 |
/*
|
|
|
973 |
* i_devi_get_client()
|
|
|
974 |
* Utility function to get mpxio component extensions
|
|
|
975 |
*/
|
|
|
976 |
static mdi_client_t *
|
|
|
977 |
i_devi_get_client(dev_info_t *cdip)
|
|
|
978 |
{
|
|
|
979 |
mdi_client_t *ct = NULL;
|
|
|
980 |
if (MDI_CLIENT(cdip)) {
|
|
|
981 |
ct = (mdi_client_t *)DEVI(cdip)->devi_mdi_client;
|
|
|
982 |
}
|
|
|
983 |
return (ct);
|
|
|
984 |
}
|
|
|
985 |
|
|
|
986 |
/*
|
|
|
987 |
* i_mdi_is_child_present():
|
|
|
988 |
* Search for the presence of client device dev_info node
|
|
|
989 |
*/
|
|
|
990 |
|
|
|
991 |
static int
|
|
|
992 |
i_mdi_is_child_present(dev_info_t *vdip, dev_info_t *cdip)
|
|
|
993 |
{
|
|
|
994 |
int rv = MDI_FAILURE;
|
|
|
995 |
struct dev_info *dip;
|
|
|
996 |
int circular;
|
|
|
997 |
|
|
|
998 |
ndi_devi_enter(vdip, &circular);
|
|
|
999 |
dip = DEVI(vdip)->devi_child;
|
|
|
1000 |
while (dip) {
|
|
|
1001 |
if (dip == DEVI(cdip)) {
|
|
|
1002 |
rv = MDI_SUCCESS;
|
|
|
1003 |
break;
|
|
|
1004 |
}
|
|
|
1005 |
dip = dip->devi_sibling;
|
|
|
1006 |
}
|
|
|
1007 |
ndi_devi_exit(vdip, circular);
|
|
|
1008 |
return (rv);
|
|
|
1009 |
}
|
|
|
1010 |
|
|
|
1011 |
|
|
|
1012 |
/*
|
|
|
1013 |
* i_mdi_client_lock():
|
|
|
1014 |
* Grab client component lock
|
|
|
1015 |
* Return Values:
|
|
|
1016 |
* None
|
|
|
1017 |
* Note:
|
|
|
1018 |
* The default locking order is:
|
|
|
1019 |
* _NOTE(LOCK_ORDER(mdi_client::ct_mutex mdi_pathinfo::pi_mutex))
|
|
|
1020 |
* But there are number of situations where locks need to be
|
|
|
1021 |
* grabbed in reverse order. This routine implements try and lock
|
|
|
1022 |
* mechanism depending on the requested parameter option.
|
|
|
1023 |
*/
|
|
|
1024 |
|
|
|
1025 |
static void
|
|
|
1026 |
i_mdi_client_lock(mdi_client_t *ct, mdi_pathinfo_t *pip)
|
|
|
1027 |
{
|
|
|
1028 |
if (pip) {
|
|
|
1029 |
/*
|
|
|
1030 |
* Reverse locking is requested.
|
|
|
1031 |
*/
|
|
|
1032 |
while (MDI_CLIENT_TRYLOCK(ct) == 0) {
|
|
|
1033 |
/*
|
|
|
1034 |
* tryenter failed. Try to grab again
|
|
|
1035 |
* after a small delay
|
|
|
1036 |
*/
|
|
|
1037 |
MDI_PI_HOLD(pip);
|
|
|
1038 |
MDI_PI_UNLOCK(pip);
|
|
|
1039 |
delay(1);
|
|
|
1040 |
MDI_PI_LOCK(pip);
|
|
|
1041 |
MDI_PI_RELE(pip);
|
|
|
1042 |
}
|
|
|
1043 |
} else {
|
|
|
1044 |
MDI_CLIENT_LOCK(ct);
|
|
|
1045 |
}
|
|
|
1046 |
}
|
|
|
1047 |
|
|
|
1048 |
/*
|
|
|
1049 |
* i_mdi_client_unlock():
|
|
|
1050 |
* Unlock a client component
|
|
|
1051 |
*/
|
|
|
1052 |
|
|
|
1053 |
static void
|
|
|
1054 |
i_mdi_client_unlock(mdi_client_t *ct)
|
|
|
1055 |
{
|
|
|
1056 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
1057 |
}
|
|
|
1058 |
|
|
|
1059 |
/*
|
|
|
1060 |
* i_mdi_client_alloc():
|
|
|
1061 |
* Allocate and initialize a client structure. Caller should
|
|
|
1062 |
* hold the global mdi_mutex.
|
|
|
1063 |
* Return Values:
|
|
|
1064 |
* Handle to a client component
|
|
|
1065 |
*/
|
|
|
1066 |
/*ARGSUSED*/
|
|
|
1067 |
static mdi_client_t *
|
|
878
|
1068 |
i_mdi_client_alloc(mdi_vhci_t *vh, char *name, char *lguid)
|
|
0
|
1069 |
{
|
|
|
1070 |
mdi_client_t *ct;
|
|
|
1071 |
|
|
|
1072 |
ASSERT(MUTEX_HELD(&mdi_mutex));
|
|
|
1073 |
|
|
|
1074 |
/*
|
|
|
1075 |
* Allocate and initialize a component structure.
|
|
|
1076 |
*/
|
|
878
|
1077 |
ct = kmem_zalloc(sizeof (*ct), KM_SLEEP);
|
|
0
|
1078 |
mutex_init(&ct->ct_mutex, NULL, MUTEX_DEFAULT, NULL);
|
|
|
1079 |
ct->ct_hnext = NULL;
|
|
|
1080 |
ct->ct_hprev = NULL;
|
|
|
1081 |
ct->ct_dip = NULL;
|
|
|
1082 |
ct->ct_vhci = vh;
|
|
878
|
1083 |
ct->ct_drvname = kmem_alloc(strlen(name) + 1, KM_SLEEP);
|
|
0
|
1084 |
(void) strcpy(ct->ct_drvname, name);
|
|
878
|
1085 |
ct->ct_guid = kmem_alloc(strlen(lguid) + 1, KM_SLEEP);
|
|
0
|
1086 |
(void) strcpy(ct->ct_guid, lguid);
|
|
|
1087 |
ct->ct_cprivate = NULL;
|
|
|
1088 |
ct->ct_vprivate = NULL;
|
|
|
1089 |
ct->ct_flags = 0;
|
|
|
1090 |
ct->ct_state = MDI_CLIENT_STATE_FAILED;
|
|
|
1091 |
MDI_CLIENT_SET_OFFLINE(ct);
|
|
|
1092 |
MDI_CLIENT_SET_DETACH(ct);
|
|
|
1093 |
MDI_CLIENT_SET_POWER_UP(ct);
|
|
|
1094 |
ct->ct_failover_flags = 0;
|
|
|
1095 |
ct->ct_failover_status = 0;
|
|
|
1096 |
cv_init(&ct->ct_failover_cv, NULL, CV_DRIVER, NULL);
|
|
|
1097 |
ct->ct_unstable = 0;
|
|
|
1098 |
cv_init(&ct->ct_unstable_cv, NULL, CV_DRIVER, NULL);
|
|
|
1099 |
cv_init(&ct->ct_powerchange_cv, NULL, CV_DRIVER, NULL);
|
|
|
1100 |
ct->ct_lb = vh->vh_lb;
|
|
878
|
1101 |
ct->ct_lb_args = kmem_zalloc(sizeof (client_lb_args_t), KM_SLEEP);
|
|
0
|
1102 |
ct->ct_lb_args->region_size = LOAD_BALANCE_DEFAULT_REGION_SIZE;
|
|
|
1103 |
ct->ct_path_count = 0;
|
|
|
1104 |
ct->ct_path_head = NULL;
|
|
|
1105 |
ct->ct_path_tail = NULL;
|
|
|
1106 |
ct->ct_path_last = NULL;
|
|
|
1107 |
|
|
|
1108 |
/*
|
|
|
1109 |
* Add this client component to our client hash queue
|
|
|
1110 |
*/
|
|
|
1111 |
i_mdi_client_enlist_table(vh, ct);
|
|
|
1112 |
return (ct);
|
|
|
1113 |
}
|
|
|
1114 |
|
|
|
1115 |
/*
|
|
|
1116 |
* i_mdi_client_enlist_table():
|
|
|
1117 |
* Attach the client device to the client hash table. Caller
|
|
|
1118 |
* should hold the mdi_mutex
|
|
|
1119 |
*/
|
|
|
1120 |
|
|
|
1121 |
static void
|
|
|
1122 |
i_mdi_client_enlist_table(mdi_vhci_t *vh, mdi_client_t *ct)
|
|
|
1123 |
{
|
|
|
1124 |
int index;
|
|
|
1125 |
struct client_hash *head;
|
|
|
1126 |
|
|
|
1127 |
ASSERT(MUTEX_HELD(&mdi_mutex));
|
|
|
1128 |
index = i_mdi_get_hash_key(ct->ct_guid);
|
|
|
1129 |
head = &vh->vh_client_table[index];
|
|
|
1130 |
ct->ct_hnext = (mdi_client_t *)head->ct_hash_head;
|
|
|
1131 |
head->ct_hash_head = ct;
|
|
|
1132 |
head->ct_hash_count++;
|
|
|
1133 |
vh->vh_client_count++;
|
|
|
1134 |
}
|
|
|
1135 |
|
|
|
1136 |
/*
|
|
|
1137 |
* i_mdi_client_delist_table():
|
|
|
1138 |
* Attach the client device to the client hash table.
|
|
|
1139 |
* Caller should hold the mdi_mutex
|
|
|
1140 |
*/
|
|
|
1141 |
|
|
|
1142 |
static void
|
|
|
1143 |
i_mdi_client_delist_table(mdi_vhci_t *vh, mdi_client_t *ct)
|
|
|
1144 |
{
|
|
|
1145 |
int index;
|
|
|
1146 |
char *guid;
|
|
|
1147 |
struct client_hash *head;
|
|
|
1148 |
mdi_client_t *next;
|
|
|
1149 |
mdi_client_t *last;
|
|
|
1150 |
|
|
|
1151 |
ASSERT(MUTEX_HELD(&mdi_mutex));
|
|
|
1152 |
guid = ct->ct_guid;
|
|
|
1153 |
index = i_mdi_get_hash_key(guid);
|
|
|
1154 |
head = &vh->vh_client_table[index];
|
|
|
1155 |
|
|
|
1156 |
last = NULL;
|
|
|
1157 |
next = (mdi_client_t *)head->ct_hash_head;
|
|
|
1158 |
while (next != NULL) {
|
|
|
1159 |
if (next == ct) {
|
|
|
1160 |
break;
|
|
|
1161 |
}
|
|
|
1162 |
last = next;
|
|
|
1163 |
next = next->ct_hnext;
|
|
|
1164 |
}
|
|
|
1165 |
|
|
|
1166 |
if (next) {
|
|
|
1167 |
head->ct_hash_count--;
|
|
|
1168 |
if (last == NULL) {
|
|
|
1169 |
head->ct_hash_head = ct->ct_hnext;
|
|
|
1170 |
} else {
|
|
|
1171 |
last->ct_hnext = ct->ct_hnext;
|
|
|
1172 |
}
|
|
|
1173 |
ct->ct_hnext = NULL;
|
|
|
1174 |
vh->vh_client_count--;
|
|
|
1175 |
}
|
|
|
1176 |
}
|
|
|
1177 |
|
|
|
1178 |
|
|
|
1179 |
/*
|
|
|
1180 |
* i_mdi_client_free():
|
|
|
1181 |
* Free a client component
|
|
|
1182 |
*/
|
|
|
1183 |
static int
|
|
|
1184 |
i_mdi_client_free(mdi_vhci_t *vh, mdi_client_t *ct)
|
|
|
1185 |
{
|
|
|
1186 |
int rv = MDI_SUCCESS;
|
|
|
1187 |
int flags = ct->ct_flags;
|
|
|
1188 |
dev_info_t *cdip;
|
|
|
1189 |
dev_info_t *vdip;
|
|
|
1190 |
|
|
|
1191 |
ASSERT(MUTEX_HELD(&mdi_mutex));
|
|
|
1192 |
vdip = vh->vh_dip;
|
|
|
1193 |
cdip = ct->ct_dip;
|
|
|
1194 |
|
|
|
1195 |
(void) ndi_prop_remove(DDI_DEV_T_NONE, cdip, MDI_CLIENT_GUID_PROP);
|
|
|
1196 |
DEVI(cdip)->devi_mdi_component &= ~MDI_COMPONENT_CLIENT;
|
|
|
1197 |
DEVI(cdip)->devi_mdi_client = NULL;
|
|
|
1198 |
|
|
|
1199 |
/*
|
|
|
1200 |
* Clear out back ref. to dev_info_t node
|
|
|
1201 |
*/
|
|
|
1202 |
ct->ct_dip = NULL;
|
|
|
1203 |
|
|
|
1204 |
/*
|
|
|
1205 |
* Remove this client from our hash queue
|
|
|
1206 |
*/
|
|
|
1207 |
i_mdi_client_delist_table(vh, ct);
|
|
|
1208 |
|
|
|
1209 |
/*
|
|
|
1210 |
* Uninitialize and free the component
|
|
|
1211 |
*/
|
|
|
1212 |
kmem_free(ct->ct_drvname, strlen(ct->ct_drvname) + 1);
|
|
|
1213 |
kmem_free(ct->ct_guid, strlen(ct->ct_guid) + 1);
|
|
|
1214 |
kmem_free(ct->ct_lb_args, sizeof (client_lb_args_t));
|
|
|
1215 |
cv_destroy(&ct->ct_failover_cv);
|
|
|
1216 |
cv_destroy(&ct->ct_unstable_cv);
|
|
|
1217 |
cv_destroy(&ct->ct_powerchange_cv);
|
|
|
1218 |
mutex_destroy(&ct->ct_mutex);
|
|
|
1219 |
kmem_free(ct, sizeof (*ct));
|
|
|
1220 |
|
|
|
1221 |
if (cdip != NULL) {
|
|
|
1222 |
mutex_exit(&mdi_mutex);
|
|
|
1223 |
(void) i_mdi_devinfo_remove(vdip, cdip, flags);
|
|
|
1224 |
mutex_enter(&mdi_mutex);
|
|
|
1225 |
}
|
|
|
1226 |
return (rv);
|
|
|
1227 |
}
|
|
|
1228 |
|
|
|
1229 |
/*
|
|
|
1230 |
* i_mdi_client_find():
|
|
|
1231 |
* Find the client structure corresponding to a given guid
|
|
|
1232 |
* Caller should hold the mdi_mutex
|
|
|
1233 |
*/
|
|
|
1234 |
static mdi_client_t *
|
|
878
|
1235 |
i_mdi_client_find(mdi_vhci_t *vh, char *cname, char *guid)
|
|
0
|
1236 |
{
|
|
|
1237 |
int index;
|
|
|
1238 |
struct client_hash *head;
|
|
|
1239 |
mdi_client_t *ct;
|
|
|
1240 |
|
|
|
1241 |
ASSERT(MUTEX_HELD(&mdi_mutex));
|
|
|
1242 |
index = i_mdi_get_hash_key(guid);
|
|
|
1243 |
head = &vh->vh_client_table[index];
|
|
|
1244 |
|
|
|
1245 |
ct = head->ct_hash_head;
|
|
|
1246 |
while (ct != NULL) {
|
|
878
|
1247 |
if (strcmp(ct->ct_guid, guid) == 0 &&
|
|
|
1248 |
(cname == NULL || strcmp(ct->ct_drvname, cname) == 0)) {
|
|
0
|
1249 |
break;
|
|
|
1250 |
}
|
|
|
1251 |
ct = ct->ct_hnext;
|
|
|
1252 |
}
|
|
|
1253 |
return (ct);
|
|
|
1254 |
}
|
|
|
1255 |
|
|
|
1256 |
|
|
|
1257 |
|
|
|
1258 |
/*
|
|
|
1259 |
* i_mdi_client_update_state():
|
|
|
1260 |
* Compute and update client device state
|
|
|
1261 |
* Notes:
|
|
|
1262 |
* A client device can be in any of three possible states:
|
|
|
1263 |
*
|
|
|
1264 |
* MDI_CLIENT_STATE_OPTIMAL - Client in optimal state with more
|
|
|
1265 |
* one online/standby paths. Can tolerate failures.
|
|
|
1266 |
* MDI_CLIENT_STATE_DEGRADED - Client device in degraded state with
|
|
|
1267 |
* no alternate paths available as standby. A failure on the online
|
|
|
1268 |
* would result in loss of access to device data.
|
|
|
1269 |
* MDI_CLIENT_STATE_FAILED - Client device in failed state with
|
|
|
1270 |
* no paths available to access the device.
|
|
|
1271 |
*/
|
|
|
1272 |
static void
|
|
|
1273 |
i_mdi_client_update_state(mdi_client_t *ct)
|
|
|
1274 |
{
|
|
|
1275 |
int state;
|
|
|
1276 |
ASSERT(MUTEX_HELD(&ct->ct_mutex));
|
|
|
1277 |
state = i_mdi_client_compute_state(ct, NULL);
|
|
|
1278 |
MDI_CLIENT_SET_STATE(ct, state);
|
|
|
1279 |
}
|
|
|
1280 |
|
|
|
1281 |
/*
|
|
|
1282 |
* i_mdi_client_compute_state():
|
|
|
1283 |
* Compute client device state
|
|
|
1284 |
*
|
|
|
1285 |
* mdi_phci_t * Pointer to pHCI structure which should
|
|
|
1286 |
* while computing the new value. Used by
|
|
|
1287 |
* i_mdi_phci_offline() to find the new
|
|
|
1288 |
* client state after DR of a pHCI.
|
|
|
1289 |
*/
|
|
|
1290 |
static int
|
|
|
1291 |
i_mdi_client_compute_state(mdi_client_t *ct, mdi_phci_t *ph)
|
|
|
1292 |
{
|
|
|
1293 |
int state;
|
|
|
1294 |
int online_count = 0;
|
|
|
1295 |
int standby_count = 0;
|
|
|
1296 |
mdi_pathinfo_t *pip, *next;
|
|
|
1297 |
|
|
|
1298 |
ASSERT(MUTEX_HELD(&ct->ct_mutex));
|
|
|
1299 |
pip = ct->ct_path_head;
|
|
|
1300 |
while (pip != NULL) {
|
|
|
1301 |
MDI_PI_LOCK(pip);
|
|
|
1302 |
next = (mdi_pathinfo_t *)MDI_PI(pip)->pi_client_link;
|
|
|
1303 |
if (MDI_PI(pip)->pi_phci == ph) {
|
|
|
1304 |
MDI_PI_UNLOCK(pip);
|
|
|
1305 |
pip = next;
|
|
|
1306 |
continue;
|
|
|
1307 |
}
|
|
|
1308 |
if ((MDI_PI(pip)->pi_state & MDI_PATHINFO_STATE_MASK)
|
|
|
1309 |
== MDI_PATHINFO_STATE_ONLINE)
|
|
|
1310 |
online_count++;
|
|
|
1311 |
else if ((MDI_PI(pip)->pi_state & MDI_PATHINFO_STATE_MASK)
|
|
|
1312 |
== MDI_PATHINFO_STATE_STANDBY)
|
|
|
1313 |
standby_count++;
|
|
|
1314 |
MDI_PI_UNLOCK(pip);
|
|
|
1315 |
pip = next;
|
|
|
1316 |
}
|
|
|
1317 |
|
|
|
1318 |
if (online_count == 0) {
|
|
|
1319 |
if (standby_count == 0) {
|
|
|
1320 |
state = MDI_CLIENT_STATE_FAILED;
|
|
|
1321 |
MDI_DEBUG(2, (CE_NOTE, NULL, "!client state: failed"
|
|
|
1322 |
" ct = %p\n", ct));
|
|
|
1323 |
} else if (standby_count == 1) {
|
|
|
1324 |
state = MDI_CLIENT_STATE_DEGRADED;
|
|
|
1325 |
} else {
|
|
|
1326 |
state = MDI_CLIENT_STATE_OPTIMAL;
|
|
|
1327 |
}
|
|
|
1328 |
} else if (online_count == 1) {
|
|
|
1329 |
if (standby_count == 0) {
|
|
|
1330 |
state = MDI_CLIENT_STATE_DEGRADED;
|
|
|
1331 |
} else {
|
|
|
1332 |
state = MDI_CLIENT_STATE_OPTIMAL;
|
|
|
1333 |
}
|
|
|
1334 |
} else {
|
|
|
1335 |
state = MDI_CLIENT_STATE_OPTIMAL;
|
|
|
1336 |
}
|
|
|
1337 |
return (state);
|
|
|
1338 |
}
|
|
|
1339 |
|
|
|
1340 |
/*
|
|
|
1341 |
* i_mdi_client2devinfo():
|
|
|
1342 |
* Utility function
|
|
|
1343 |
*/
|
|
|
1344 |
dev_info_t *
|
|
|
1345 |
i_mdi_client2devinfo(mdi_client_t *ct)
|
|
|
1346 |
{
|
|
|
1347 |
return (ct->ct_dip);
|
|
|
1348 |
}
|
|
|
1349 |
|
|
|
1350 |
/*
|
|
|
1351 |
* mdi_client_path2_devinfo():
|
|
|
1352 |
* Given the parent devinfo and child devfs pathname, search for
|
|
|
1353 |
* a valid devfs node handle.
|
|
|
1354 |
*/
|
|
|
1355 |
dev_info_t *
|
|
|
1356 |
mdi_client_path2devinfo(dev_info_t *vdip, char *pathname)
|
|
|
1357 |
{
|
|
|
1358 |
dev_info_t *cdip = NULL;
|
|
|
1359 |
dev_info_t *ndip = NULL;
|
|
|
1360 |
char *temp_pathname;
|
|
|
1361 |
int circular;
|
|
|
1362 |
|
|
|
1363 |
/*
|
|
|
1364 |
* Allocate temp buffer
|
|
|
1365 |
*/
|
|
|
1366 |
temp_pathname = kmem_zalloc(MAXPATHLEN, KM_SLEEP);
|
|
|
1367 |
|
|
|
1368 |
/*
|
|
|
1369 |
* Lock parent against changes
|
|
|
1370 |
*/
|
|
|
1371 |
ndi_devi_enter(vdip, &circular);
|
|
|
1372 |
ndip = (dev_info_t *)DEVI(vdip)->devi_child;
|
|
|
1373 |
while ((cdip = ndip) != NULL) {
|
|
|
1374 |
ndip = (dev_info_t *)DEVI(cdip)->devi_sibling;
|
|
|
1375 |
|
|
|
1376 |
*temp_pathname = '\0';
|
|
|
1377 |
(void) ddi_pathname(cdip, temp_pathname);
|
|
|
1378 |
if (strcmp(temp_pathname, pathname) == 0) {
|
|
|
1379 |
break;
|
|
|
1380 |
}
|
|
|
1381 |
}
|
|
|
1382 |
/*
|
|
|
1383 |
* Release devinfo lock
|
|
|
1384 |
*/
|
|
|
1385 |
ndi_devi_exit(vdip, circular);
|
|
|
1386 |
|
|
|
1387 |
/*
|
|
|
1388 |
* Free the temp buffer
|
|
|
1389 |
*/
|
|
|
1390 |
kmem_free(temp_pathname, MAXPATHLEN);
|
|
|
1391 |
return (cdip);
|
|
|
1392 |
}
|
|
|
1393 |
|
|
|
1394 |
|
|
|
1395 |
/*
|
|
|
1396 |
* mdi_client_get_path_count():
|
|
|
1397 |
* Utility function to get number of path information nodes
|
|
|
1398 |
* associated with a given client device.
|
|
|
1399 |
*/
|
|
|
1400 |
int
|
|
|
1401 |
mdi_client_get_path_count(dev_info_t *cdip)
|
|
|
1402 |
{
|
|
|
1403 |
mdi_client_t *ct;
|
|
|
1404 |
int count = 0;
|
|
|
1405 |
|
|
|
1406 |
ct = i_devi_get_client(cdip);
|
|
|
1407 |
if (ct != NULL) {
|
|
|
1408 |
count = ct->ct_path_count;
|
|
|
1409 |
}
|
|
|
1410 |
return (count);
|
|
|
1411 |
}
|
|
|
1412 |
|
|
|
1413 |
|
|
|
1414 |
/*
|
|
|
1415 |
* i_mdi_get_hash_key():
|
|
|
1416 |
* Create a hash using strings as keys
|
|
|
1417 |
*
|
|
|
1418 |
*/
|
|
|
1419 |
static int
|
|
|
1420 |
i_mdi_get_hash_key(char *str)
|
|
|
1421 |
{
|
|
|
1422 |
uint32_t g, hash = 0;
|
|
|
1423 |
char *p;
|
|
|
1424 |
|
|
|
1425 |
for (p = str; *p != '\0'; p++) {
|
|
|
1426 |
g = *p;
|
|
|
1427 |
hash += g;
|
|
|
1428 |
}
|
|
|
1429 |
return (hash % (CLIENT_HASH_TABLE_SIZE - 1));
|
|
|
1430 |
}
|
|
|
1431 |
|
|
|
1432 |
/*
|
|
|
1433 |
* mdi_get_lb_policy():
|
|
|
1434 |
* Get current load balancing policy for a given client device
|
|
|
1435 |
*/
|
|
|
1436 |
client_lb_t
|
|
|
1437 |
mdi_get_lb_policy(dev_info_t *cdip)
|
|
|
1438 |
{
|
|
|
1439 |
client_lb_t lb = LOAD_BALANCE_NONE;
|
|
|
1440 |
mdi_client_t *ct;
|
|
|
1441 |
|
|
|
1442 |
ct = i_devi_get_client(cdip);
|
|
|
1443 |
if (ct != NULL) {
|
|
|
1444 |
lb = ct->ct_lb;
|
|
|
1445 |
}
|
|
|
1446 |
return (lb);
|
|
|
1447 |
}
|
|
|
1448 |
|
|
|
1449 |
/*
|
|
|
1450 |
* mdi_set_lb_region_size():
|
|
|
1451 |
* Set current region size for the load-balance
|
|
|
1452 |
*/
|
|
|
1453 |
int
|
|
|
1454 |
mdi_set_lb_region_size(dev_info_t *cdip, int region_size)
|
|
|
1455 |
{
|
|
|
1456 |
mdi_client_t *ct;
|
|
|
1457 |
int rv = MDI_FAILURE;
|
|
|
1458 |
|
|
|
1459 |
ct = i_devi_get_client(cdip);
|
|
|
1460 |
if (ct != NULL && ct->ct_lb_args != NULL) {
|
|
|
1461 |
ct->ct_lb_args->region_size = region_size;
|
|
|
1462 |
rv = MDI_SUCCESS;
|
|
|
1463 |
}
|
|
|
1464 |
return (rv);
|
|
|
1465 |
}
|
|
|
1466 |
|
|
|
1467 |
/*
|
|
|
1468 |
* mdi_Set_lb_policy():
|
|
|
1469 |
* Set current load balancing policy for a given client device
|
|
|
1470 |
*/
|
|
|
1471 |
int
|
|
|
1472 |
mdi_set_lb_policy(dev_info_t *cdip, client_lb_t lb)
|
|
|
1473 |
{
|
|
|
1474 |
mdi_client_t *ct;
|
|
|
1475 |
int rv = MDI_FAILURE;
|
|
|
1476 |
|
|
|
1477 |
ct = i_devi_get_client(cdip);
|
|
|
1478 |
if (ct != NULL) {
|
|
|
1479 |
ct->ct_lb = lb;
|
|
|
1480 |
rv = MDI_SUCCESS;
|
|
|
1481 |
}
|
|
|
1482 |
return (rv);
|
|
|
1483 |
}
|
|
|
1484 |
|
|
|
1485 |
/*
|
|
|
1486 |
* mdi_failover():
|
|
|
1487 |
* failover function called by the vHCI drivers to initiate
|
|
|
1488 |
* a failover operation. This is typically due to non-availability
|
|
|
1489 |
* of online paths to route I/O requests. Failover can be
|
|
|
1490 |
* triggered through user application also.
|
|
|
1491 |
*
|
|
|
1492 |
* The vHCI driver calls mdi_failover() to initiate a failover
|
|
|
1493 |
* operation. mdi_failover() calls back into the vHCI driver's
|
|
|
1494 |
* vo_failover() entry point to perform the actual failover
|
|
|
1495 |
* operation. The reason for requiring the vHCI driver to
|
|
|
1496 |
* initiate failover by calling mdi_failover(), instead of directly
|
|
|
1497 |
* executing vo_failover() itself, is to ensure that the mdi
|
|
|
1498 |
* framework can keep track of the client state properly.
|
|
|
1499 |
* Additionally, mdi_failover() provides as a convenience the
|
|
|
1500 |
* option of performing the failover operation synchronously or
|
|
|
1501 |
* asynchronously
|
|
|
1502 |
*
|
|
|
1503 |
* Upon successful completion of the failover operation, the
|
|
|
1504 |
* paths that were previously ONLINE will be in the STANDBY state,
|
|
|
1505 |
* and the newly activated paths will be in the ONLINE state.
|
|
|
1506 |
*
|
|
|
1507 |
* The flags modifier determines whether the activation is done
|
|
|
1508 |
* synchronously: MDI_FAILOVER_SYNC
|
|
|
1509 |
* Return Values:
|
|
|
1510 |
* MDI_SUCCESS
|
|
|
1511 |
* MDI_FAILURE
|
|
|
1512 |
* MDI_BUSY
|
|
|
1513 |
*/
|
|
|
1514 |
/*ARGSUSED*/
|
|
|
1515 |
int
|
|
|
1516 |
mdi_failover(dev_info_t *vdip, dev_info_t *cdip, int flags)
|
|
|
1517 |
{
|
|
|
1518 |
int rv;
|
|
|
1519 |
mdi_client_t *ct;
|
|
|
1520 |
|
|
|
1521 |
ct = i_devi_get_client(cdip);
|
|
|
1522 |
ASSERT(ct != NULL);
|
|
|
1523 |
if (ct == NULL) {
|
|
|
1524 |
/* cdip is not a valid client device. Nothing more to do. */
|
|
|
1525 |
return (MDI_FAILURE);
|
|
|
1526 |
}
|
|
|
1527 |
|
|
|
1528 |
MDI_CLIENT_LOCK(ct);
|
|
|
1529 |
|
|
|
1530 |
if (MDI_CLIENT_IS_PATH_FREE_IN_PROGRESS(ct)) {
|
|
|
1531 |
/* A path to the client is being freed */
|
|
|
1532 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
1533 |
return (MDI_BUSY);
|
|
|
1534 |
}
|
|
|
1535 |
|
|
|
1536 |
|
|
|
1537 |
if (MDI_CLIENT_IS_FAILED(ct)) {
|
|
|
1538 |
/*
|
|
|
1539 |
* Client is in failed state. Nothing more to do.
|
|
|
1540 |
*/
|
|
|
1541 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
1542 |
return (MDI_FAILURE);
|
|
|
1543 |
}
|
|
|
1544 |
|
|
|
1545 |
if (MDI_CLIENT_IS_FAILOVER_IN_PROGRESS(ct)) {
|
|
|
1546 |
/*
|
|
|
1547 |
* Failover is already in progress; return BUSY
|
|
|
1548 |
*/
|
|
|
1549 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
1550 |
return (MDI_BUSY);
|
|
|
1551 |
}
|
|
|
1552 |
/*
|
|
|
1553 |
* Make sure that mdi_pathinfo node state changes are processed.
|
|
|
1554 |
* We do not allow failovers to progress while client path state
|
|
|
1555 |
* changes are in progress
|
|
|
1556 |
*/
|
|
|
1557 |
if (ct->ct_unstable) {
|
|
|
1558 |
if (flags == MDI_FAILOVER_ASYNC) {
|
|
|
1559 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
1560 |
return (MDI_BUSY);
|
|
|
1561 |
} else {
|
|
|
1562 |
while (ct->ct_unstable)
|
|
|
1563 |
cv_wait(&ct->ct_unstable_cv, &ct->ct_mutex);
|
|
|
1564 |
}
|
|
|
1565 |
}
|
|
|
1566 |
|
|
|
1567 |
/*
|
|
|
1568 |
* Client device is in stable state. Before proceeding, perform sanity
|
|
|
1569 |
* checks again.
|
|
|
1570 |
*/
|
|
|
1571 |
if ((MDI_CLIENT_IS_DETACHED(ct)) || (MDI_CLIENT_IS_FAILED(ct)) ||
|
|
|
1572 |
(i_ddi_node_state(ct->ct_dip) < DS_READY)) {
|
|
|
1573 |
/*
|
|
|
1574 |
* Client is in failed state. Nothing more to do.
|
|
|
1575 |
*/
|
|
|
1576 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
1577 |
return (MDI_FAILURE);
|
|
|
1578 |
}
|
|
|
1579 |
|
|
|
1580 |
/*
|
|
|
1581 |
* Set the client state as failover in progress.
|
|
|
1582 |
*/
|
|
|
1583 |
MDI_CLIENT_SET_FAILOVER_IN_PROGRESS(ct);
|
|
|
1584 |
ct->ct_failover_flags = flags;
|
|
|
1585 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
1586 |
|
|
|
1587 |
if (flags == MDI_FAILOVER_ASYNC) {
|
|
|
1588 |
/*
|
|
|
1589 |
* Submit the initiate failover request via CPR safe
|
|
|
1590 |
* taskq threads.
|
|
|
1591 |
*/
|
|
|
1592 |
(void) taskq_dispatch(mdi_taskq, (task_func_t *)i_mdi_failover,
|
|
|
1593 |
ct, KM_SLEEP);
|
|
|
1594 |
return (MDI_ACCEPT);
|
|
|
1595 |
} else {
|
|
|
1596 |
/*
|
|
|
1597 |
* Synchronous failover mode. Typically invoked from the user
|
|
|
1598 |
* land.
|
|
|
1599 |
*/
|
|
|
1600 |
rv = i_mdi_failover(ct);
|
|
|
1601 |
}
|
|
|
1602 |
return (rv);
|
|
|
1603 |
}
|
|
|
1604 |
|
|
|
1605 |
/*
|
|
|
1606 |
* i_mdi_failover():
|
|
|
1607 |
* internal failover function. Invokes vHCI drivers failover
|
|
|
1608 |
* callback function and process the failover status
|
|
|
1609 |
* Return Values:
|
|
|
1610 |
* None
|
|
|
1611 |
*
|
|
|
1612 |
* Note: A client device in failover state can not be detached or freed.
|
|
|
1613 |
*/
|
|
|
1614 |
static int
|
|
|
1615 |
i_mdi_failover(void *arg)
|
|
|
1616 |
{
|
|
|
1617 |
int rv = MDI_SUCCESS;
|
|
|
1618 |
mdi_client_t *ct = (mdi_client_t *)arg;
|
|
|
1619 |
mdi_vhci_t *vh = ct->ct_vhci;
|
|
|
1620 |
|
|
|
1621 |
ASSERT(!MUTEX_HELD(&ct->ct_mutex));
|
|
|
1622 |
|
|
|
1623 |
if (vh->vh_ops->vo_failover != NULL) {
|
|
|
1624 |
/*
|
|
|
1625 |
* Call vHCI drivers callback routine
|
|
|
1626 |
*/
|
|
|
1627 |
rv = (*vh->vh_ops->vo_failover)(vh->vh_dip, ct->ct_dip,
|
|
|
1628 |
ct->ct_failover_flags);
|
|
|
1629 |
}
|
|
|
1630 |
|
|
|
1631 |
MDI_CLIENT_LOCK(ct);
|
|
|
1632 |
MDI_CLIENT_CLEAR_FAILOVER_IN_PROGRESS(ct);
|
|
|
1633 |
|
|
|
1634 |
/*
|
|
|
1635 |
* Save the failover return status
|
|
|
1636 |
*/
|
|
|
1637 |
ct->ct_failover_status = rv;
|
|
|
1638 |
|
|
|
1639 |
/*
|
|
|
1640 |
* As a result of failover, client status would have been changed.
|
|
|
1641 |
* Update the client state and wake up anyone waiting on this client
|
|
|
1642 |
* device.
|
|
|
1643 |
*/
|
|
|
1644 |
i_mdi_client_update_state(ct);
|
|
|
1645 |
|
|
|
1646 |
cv_broadcast(&ct->ct_failover_cv);
|
|
|
1647 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
1648 |
return (rv);
|
|
|
1649 |
}
|
|
|
1650 |
|
|
|
1651 |
/*
|
|
|
1652 |
* Load balancing is logical block.
|
|
|
1653 |
* IOs within the range described by region_size
|
|
|
1654 |
* would go on the same path. This would improve the
|
|
|
1655 |
* performance by cache-hit on some of the RAID devices.
|
|
|
1656 |
* Search only for online paths(At some point we
|
|
|
1657 |
* may want to balance across target ports).
|
|
|
1658 |
* If no paths are found then default to round-robin.
|
|
|
1659 |
*/
|
|
|
1660 |
static int
|
|
|
1661 |
i_mdi_lba_lb(mdi_client_t *ct, mdi_pathinfo_t **ret_pip, struct buf *bp)
|
|
|
1662 |
{
|
|
|
1663 |
int path_index = -1;
|
|
|
1664 |
int online_path_count = 0;
|
|
|
1665 |
int online_nonpref_path_count = 0;
|
|
|
1666 |
int region_size = ct->ct_lb_args->region_size;
|
|
|
1667 |
mdi_pathinfo_t *pip;
|
|
|
1668 |
mdi_pathinfo_t *next;
|
|
|
1669 |
int preferred, path_cnt;
|
|
|
1670 |
|
|
|
1671 |
pip = ct->ct_path_head;
|
|
|
1672 |
while (pip) {
|
|
|
1673 |
MDI_PI_LOCK(pip);
|
|
|
1674 |
if (MDI_PI(pip)->pi_state ==
|
|
|
1675 |
MDI_PATHINFO_STATE_ONLINE && MDI_PI(pip)->pi_preferred) {
|
|
|
1676 |
online_path_count++;
|
|
|
1677 |
} else if (MDI_PI(pip)->pi_state ==
|
|
|
1678 |
MDI_PATHINFO_STATE_ONLINE && !MDI_PI(pip)->pi_preferred) {
|
|
|
1679 |
online_nonpref_path_count++;
|
|
|
1680 |
}
|
|
|
1681 |
next = (mdi_pathinfo_t *)
|
|
|
1682 |
MDI_PI(pip)->pi_client_link;
|
|
|
1683 |
MDI_PI_UNLOCK(pip);
|
|
|
1684 |
pip = next;
|
|
|
1685 |
}
|
|
|
1686 |
/* if found any online/preferred then use this type */
|
|
|
1687 |
if (online_path_count > 0) {
|
|
|
1688 |
path_cnt = online_path_count;
|
|
|
1689 |
preferred = 1;
|
|
|
1690 |
} else if (online_nonpref_path_count > 0) {
|
|
|
1691 |
path_cnt = online_nonpref_path_count;
|
|
|
1692 |
preferred = 0;
|
|
|
1693 |
} else {
|
|
|
1694 |
path_cnt = 0;
|
|
|
1695 |
}
|
|
|
1696 |
if (path_cnt) {
|
|
|
1697 |
path_index = (bp->b_blkno >> region_size) % path_cnt;
|
|
|
1698 |
pip = ct->ct_path_head;
|
|
|
1699 |
while (pip && path_index != -1) {
|
|
|
1700 |
MDI_PI_LOCK(pip);
|
|
|
1701 |
if (path_index == 0 &&
|
|
|
1702 |
(MDI_PI(pip)->pi_state ==
|
|
|
1703 |
MDI_PATHINFO_STATE_ONLINE) &&
|
|
|
1704 |
MDI_PI(pip)->pi_preferred == preferred) {
|
|
|
1705 |
MDI_PI_HOLD(pip);
|
|
|
1706 |
MDI_PI_UNLOCK(pip);
|
|
|
1707 |
*ret_pip = pip;
|
|
|
1708 |
return (MDI_SUCCESS);
|
|
|
1709 |
}
|
|
|
1710 |
path_index --;
|
|
|
1711 |
next = (mdi_pathinfo_t *)
|
|
|
1712 |
MDI_PI(pip)->pi_client_link;
|
|
|
1713 |
MDI_PI_UNLOCK(pip);
|
|
|
1714 |
pip = next;
|
|
|
1715 |
}
|
|
|
1716 |
if (pip == NULL) {
|
|
|
1717 |
MDI_DEBUG(4, (CE_NOTE, NULL,
|
|
|
1718 |
"!lba %p, no pip !!\n",
|
|
|
1719 |
bp->b_blkno));
|
|
|
1720 |
} else {
|
|
|
1721 |
MDI_DEBUG(4, (CE_NOTE, NULL,
|
|
|
1722 |
"!lba %p, no pip for path_index, "
|
|
|
1723 |
"pip %p\n", pip));
|
|
|
1724 |
}
|
|
|
1725 |
}
|
|
|
1726 |
return (MDI_FAILURE);
|
|
|
1727 |
}
|
|
|
1728 |
|
|
|
1729 |
/*
|
|
|
1730 |
* mdi_select_path():
|
|
|
1731 |
* select a path to access a client device.
|
|
|
1732 |
*
|
|
|
1733 |
* mdi_select_path() function is called by the vHCI drivers to
|
|
|
1734 |
* select a path to route the I/O request to. The caller passes
|
|
|
1735 |
* the block I/O data transfer structure ("buf") as one of the
|
|
|
1736 |
* parameters. The mpxio framework uses the buf structure
|
|
|
1737 |
* contents to maintain per path statistics (total I/O size /
|
|
|
1738 |
* count pending). If more than one online paths are available to
|
|
|
1739 |
* select, the framework automatically selects a suitable path
|
|
|
1740 |
* for routing I/O request. If a failover operation is active for
|
|
|
1741 |
* this client device the call shall be failed with MDI_BUSY error
|
|
|
1742 |
* code.
|
|
|
1743 |
*
|
|
|
1744 |
* By default this function returns a suitable path in online
|
|
|
1745 |
* state based on the current load balancing policy. Currently
|
|
|
1746 |
* we support LOAD_BALANCE_NONE (Previously selected online path
|
|
|
1747 |
* will continue to be used till the path is usable) and
|
|
|
1748 |
* LOAD_BALANCE_RR (Online paths will be selected in a round
|
|
|
1749 |
* robin fashion), LOAD_BALANCE_LB(Online paths will be selected
|
|
|
1750 |
* based on the logical block). The load balancing
|
|
|
1751 |
* through vHCI drivers configuration file (driver.conf).
|
|
|
1752 |
*
|
|
|
1753 |
* vHCI drivers may override this default behavior by specifying
|
|
|
1754 |
* appropriate flags. If start_pip is specified (non NULL) is
|
|
|
1755 |
* used as start point to walk and find the next appropriate path.
|
|
|
1756 |
* The following values are currently defined:
|
|
|
1757 |
* MDI_SELECT_ONLINE_PATH (to select an ONLINE path) and/or
|
|
|
1758 |
* MDI_SELECT_STANDBY_PATH (to select an STANDBY path).
|
|
|
1759 |
*
|
|
|
1760 |
* The non-standard behavior is used by the scsi_vhci driver,
|
|
|
1761 |
* whenever it has to use a STANDBY/FAULTED path. Eg. during
|
|
|
1762 |
* attach of client devices (to avoid an unnecessary failover
|
|
|
1763 |
* when the STANDBY path comes up first), during failover
|
|
|
1764 |
* (to activate a STANDBY path as ONLINE).
|
|
|
1765 |
*
|
|
|
1766 |
* The selected path in returned in a held state (ref_cnt).
|
|
|
1767 |
* Caller should release the hold by calling mdi_rele_path().
|
|
|
1768 |
*
|
|
|
1769 |
* Return Values:
|
|
|
1770 |
* MDI_SUCCESS - Completed successfully
|
|
|
1771 |
* MDI_BUSY - Client device is busy failing over
|
|
|
1772 |
* MDI_NOPATH - Client device is online, but no valid path are
|
|
|
1773 |
* available to access this client device
|
|
|
1774 |
* MDI_FAILURE - Invalid client device or state
|
|
|
1775 |
* MDI_DEVI_ONLINING
|
|
|
1776 |
* - Client device (struct dev_info state) is in
|
|
|
1777 |
* onlining state.
|
|
|
1778 |
*/
|
|
|
1779 |
|
|
|
1780 |
/*ARGSUSED*/
|
|
|
1781 |
int
|
|
|
1782 |
mdi_select_path(dev_info_t *cdip, struct buf *bp, int flags,
|
|
|
1783 |
mdi_pathinfo_t *start_pip, mdi_pathinfo_t **ret_pip)
|
|
|
1784 |
{
|
|
|
1785 |
mdi_client_t *ct;
|
|
|
1786 |
mdi_pathinfo_t *pip;
|
|
|
1787 |
mdi_pathinfo_t *next;
|
|
|
1788 |
mdi_pathinfo_t *head;
|
|
|
1789 |
mdi_pathinfo_t *start;
|
|
|
1790 |
client_lb_t lbp; /* load balancing policy */
|
|
|
1791 |
int sb = 1; /* standard behavior */
|
|
|
1792 |
int preferred = 1; /* preferred path */
|
|
|
1793 |
int cond, cont = 1;
|
|
|
1794 |
int retry = 0;
|
|
|
1795 |
|
|
|
1796 |
if (flags != 0) {
|
|
|
1797 |
/*
|
|
|
1798 |
* disable default behavior
|
|
|
1799 |
*/
|
|
|
1800 |
sb = 0;
|
|
|
1801 |
}
|
|
|
1802 |
|
|
|
1803 |
*ret_pip = NULL;
|
|
|
1804 |
ct = i_devi_get_client(cdip);
|
|
|
1805 |
if (ct == NULL) {
|
|
|
1806 |
/* mdi extensions are NULL, Nothing more to do */
|
|
|
1807 |
return (MDI_FAILURE);
|
|
|
1808 |
}
|
|
|
1809 |
|
|
|
1810 |
MDI_CLIENT_LOCK(ct);
|
|
|
1811 |
|
|
|
1812 |
if (sb) {
|
|
|
1813 |
if (MDI_CLIENT_IS_FAILED(ct)) {
|
|
|
1814 |
/*
|
|
|
1815 |
* Client is not ready to accept any I/O requests.
|
|
|
1816 |
* Fail this request.
|
|
|
1817 |
*/
|
|
|
1818 |
MDI_DEBUG(2, (CE_NOTE, cdip, "!mdi_select_path: "
|
|
|
1819 |
"client state offline ct = %p\n", ct));
|
|
|
1820 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
1821 |
return (MDI_FAILURE);
|
|
|
1822 |
}
|
|
|
1823 |
|
|
|
1824 |
if (MDI_CLIENT_IS_FAILOVER_IN_PROGRESS(ct)) {
|
|
|
1825 |
/*
|
|
|
1826 |
* Check for Failover is in progress. If so tell the
|
|
|
1827 |
* caller that this device is busy.
|
|
|
1828 |
*/
|
|
|
1829 |
MDI_DEBUG(2, (CE_NOTE, cdip, "!mdi_select_path: "
|
|
|
1830 |
"client failover in progress ct = %p\n", ct));
|
|
|
1831 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
1832 |
return (MDI_BUSY);
|
|
|
1833 |
}
|
|
|
1834 |
|
|
|
1835 |
/*
|
|
|
1836 |
* Check to see whether the client device is attached.
|
|
|
1837 |
* If not so, let the vHCI driver manually select a path
|
|
|
1838 |
* (standby) and let the probe/attach process to continue.
|
|
|
1839 |
*/
|
|
|
1840 |
if ((MDI_CLIENT_IS_DETACHED(ct)) ||
|
|
|
1841 |
i_ddi_node_state(cdip) < DS_READY) {
|
|
|
1842 |
MDI_DEBUG(4, (CE_NOTE, cdip, "!Devi is onlining\n"));
|
|
|
1843 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
1844 |
return (MDI_DEVI_ONLINING);
|
|
|
1845 |
}
|
|
|
1846 |
}
|
|
|
1847 |
|
|
|
1848 |
/*
|
|
|
1849 |
* Cache in the client list head. If head of the list is NULL
|
|
|
1850 |
* return MDI_NOPATH
|
|
|
1851 |
*/
|
|
|
1852 |
head = ct->ct_path_head;
|
|
|
1853 |
if (head == NULL) {
|
|
|
1854 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
1855 |
return (MDI_NOPATH);
|
|
|
1856 |
}
|
|
|
1857 |
|
|
|
1858 |
/*
|
|
|
1859 |
* for non default behavior, bypass current
|
|
|
1860 |
* load balancing policy and always use LOAD_BALANCE_RR
|
|
|
1861 |
* except that the start point will be adjusted based
|
|
|
1862 |
* on the provided start_pip
|
|
|
1863 |
*/
|
|
|
1864 |
lbp = sb ? ct->ct_lb : LOAD_BALANCE_RR;
|
|
|
1865 |
|
|
|
1866 |
switch (lbp) {
|
|
|
1867 |
case LOAD_BALANCE_NONE:
|
|
|
1868 |
/*
|
|
|
1869 |
* Load balancing is None or Alternate path mode
|
|
|
1870 |
* Start looking for a online mdi_pathinfo node starting from
|
|
|
1871 |
* last known selected path
|
|
|
1872 |
*/
|
|
|
1873 |
preferred = 1;
|
|
|
1874 |
pip = (mdi_pathinfo_t *)ct->ct_path_last;
|
|
|
1875 |
if (pip == NULL) {
|
|
|
1876 |
pip = head;
|
|
|
1877 |
}
|
|
|
1878 |
start = pip;
|
|
|
1879 |
do {
|
|
|
1880 |
MDI_PI_LOCK(pip);
|
|
|
1881 |
/*
|
|
|
1882 |
* No need to explicitly check if the path is disabled.
|
|
|
1883 |
* Since we are checking for state == ONLINE and the
|
|
|
1884 |
* same veriable is used for DISABLE/ENABLE information.
|
|
|
1885 |
*/
|
|
|
1886 |
if (MDI_PI(pip)->pi_state ==
|
|
|
1887 |
MDI_PATHINFO_STATE_ONLINE &&
|
|
|
1888 |
preferred == MDI_PI(pip)->pi_preferred) {
|
|
|
1889 |
/*
|
|
|
1890 |
* Return the path in hold state. Caller should
|
|
|
1891 |
* release the lock by calling mdi_rele_path()
|
|
|
1892 |
*/
|
|
|
1893 |
MDI_PI_HOLD(pip);
|
|
|
1894 |
MDI_PI_UNLOCK(pip);
|
|
|
1895 |
ct->ct_path_last = pip;
|
|
|
1896 |
*ret_pip = pip;
|
|
|
1897 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
1898 |
return (MDI_SUCCESS);
|
|
|
1899 |
}
|
|
|
1900 |
|
|
|
1901 |
/*
|
|
|
1902 |
* Path is busy.
|
|
|
1903 |
*/
|
|
|
1904 |
if (MDI_PI_IS_DRV_DISABLE_TRANSIENT(pip) ||
|
|
|
1905 |
MDI_PI_IS_TRANSIENT(pip))
|
|
|
1906 |
retry = 1;
|
|
|
1907 |
/*
|
|
|
1908 |
* Keep looking for a next available online path
|
|
|
1909 |
*/
|
|
|
1910 |
next = (mdi_pathinfo_t *)MDI_PI(pip)->pi_client_link;
|
|
|
1911 |
if (next == NULL) {
|
|
|
1912 |
next = head;
|
|
|
1913 |
}
|
|
|
1914 |
MDI_PI_UNLOCK(pip);
|
|
|
1915 |
pip = next;
|
|
|
1916 |
if (start == pip && preferred) {
|
|
|
1917 |
preferred = 0;
|
|
|
1918 |
} else if (start == pip && !preferred) {
|
|
|
1919 |
cont = 0;
|
|
|
1920 |
}
|
|
|
1921 |
} while (cont);
|
|
|
1922 |
break;
|
|
|
1923 |
|
|
|
1924 |
case LOAD_BALANCE_LBA:
|
|
|
1925 |
/*
|
|
|
1926 |
* Make sure we are looking
|
|
|
1927 |
* for an online path. Otherwise, if it is for a STANDBY
|
|
|
1928 |
* path request, it will go through and fetch an ONLINE
|
|
|
1929 |
* path which is not desirable.
|
|
|
1930 |
*/
|
|
|
1931 |
if ((ct->ct_lb_args != NULL) &&
|
|
|
1932 |
(ct->ct_lb_args->region_size) && bp &&
|
|
|
1933 |
(sb || (flags == MDI_SELECT_ONLINE_PATH))) {
|
|
|
1934 |
if (i_mdi_lba_lb(ct, ret_pip, bp)
|
|
|
1935 |
== MDI_SUCCESS) {
|
|
|
1936 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
1937 |
return (MDI_SUCCESS);
|
|
|
1938 |
}
|
|
|
1939 |
}
|
|
|
1940 |
/* FALLTHROUGH */
|
|
|
1941 |
case LOAD_BALANCE_RR:
|
|
|
1942 |
/*
|
|
|
1943 |
* Load balancing is Round Robin. Start looking for a online
|
|
|
1944 |
* mdi_pathinfo node starting from last known selected path
|
|
|
1945 |
* as the start point. If override flags are specified,
|
|
|
1946 |
* process accordingly.
|
|
|
1947 |
* If the search is already in effect(start_pip not null),
|
|
|
1948 |
* then lets just use the same path preference to continue the
|
|
|
1949 |
* traversal.
|
|
|
1950 |
*/
|
|
|
1951 |
|
|
|
1952 |
if (start_pip != NULL) {
|
|
|
1953 |
preferred = MDI_PI(start_pip)->pi_preferred;
|
|
|
1954 |
} else {
|
|
|
1955 |
preferred = 1;
|
|
|
1956 |
}
|
|
|
1957 |
|
|
|
1958 |
start = sb ? (mdi_pathinfo_t *)ct->ct_path_last : start_pip;
|
|
|
1959 |
if (start == NULL) {
|
|
|
1960 |
pip = head;
|
|
|
1961 |
} else {
|
|
|
1962 |
pip = (mdi_pathinfo_t *)MDI_PI(start)->pi_client_link;
|
|
|
1963 |
if (pip == NULL) {
|
|
|
1964 |
if (!sb) {
|
|
|
1965 |
if (preferred == 0) {
|
|
|
1966 |
/*
|
|
|
1967 |
* Looks like we have completed
|
|
|
1968 |
* the traversal as preferred
|
|
|
1969 |
* value is 0. Time to bail out.
|
|
|
1970 |
*/
|
|
|
1971 |
*ret_pip = NULL;
|
|
|
1972 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
1973 |
return (MDI_NOPATH);
|
|
|
1974 |
} else {
|
|
|
1975 |
/*
|
|
|
1976 |
* Looks like we reached the
|
|
|
1977 |
* end of the list. Lets enable
|
|
|
1978 |
* traversal of non preferred
|
|
|
1979 |
* paths.
|
|
|
1980 |
*/
|
|
|
1981 |
preferred = 0;
|
|
|
1982 |
}
|
|
|
1983 |
}
|
|
|
1984 |
pip = head;
|
|
|
1985 |
}
|
|
|
1986 |
}
|
|
|
1987 |
start = pip;
|
|
|
1988 |
do {
|
|
|
1989 |
MDI_PI_LOCK(pip);
|
|
|
1990 |
if (sb) {
|
|
|
1991 |
cond = ((MDI_PI(pip)->pi_state ==
|
|
|
1992 |
MDI_PATHINFO_STATE_ONLINE &&
|
|
|
1993 |
MDI_PI(pip)->pi_preferred ==
|
|
|
1994 |
preferred) ? 1 : 0);
|
|
|
1995 |
} else {
|
|
|
1996 |
if (flags == MDI_SELECT_ONLINE_PATH) {
|
|
|
1997 |
cond = ((MDI_PI(pip)->pi_state ==
|
|
|
1998 |
MDI_PATHINFO_STATE_ONLINE &&
|
|
|
1999 |
MDI_PI(pip)->pi_preferred ==
|
|
|
2000 |
preferred) ? 1 : 0);
|
|
|
2001 |
} else if (flags == MDI_SELECT_STANDBY_PATH) {
|
|
|
2002 |
cond = ((MDI_PI(pip)->pi_state ==
|
|
|
2003 |
MDI_PATHINFO_STATE_STANDBY &&
|
|
|
2004 |
MDI_PI(pip)->pi_preferred ==
|
|
|
2005 |
preferred) ? 1 : 0);
|
|
|
2006 |
} else if (flags == (MDI_SELECT_ONLINE_PATH |
|
|
|
2007 |
MDI_SELECT_STANDBY_PATH)) {
|
|
|
2008 |
cond = (((MDI_PI(pip)->pi_state ==
|
|
|
2009 |
MDI_PATHINFO_STATE_ONLINE ||
|
|
|
2010 |
(MDI_PI(pip)->pi_state ==
|
|
|
2011 |
MDI_PATHINFO_STATE_STANDBY)) &&
|
|
|
2012 |
MDI_PI(pip)->pi_preferred ==
|
|
|
2013 |
preferred) ? 1 : 0);
|
|
|
2014 |
} else {
|
|
|
2015 |
cond = 0;
|
|
|
2016 |
}
|
|
|
2017 |
}
|
|
|
2018 |
/*
|
|
|
2019 |
* No need to explicitly check if the path is disabled.
|
|
|
2020 |
* Since we are checking for state == ONLINE and the
|
|
|
2021 |
* same veriable is used for DISABLE/ENABLE information.
|
|
|
2022 |
*/
|
|
|
2023 |
if (cond) {
|
|
|
2024 |
/*
|
|
|
2025 |
* Return the path in hold state. Caller should
|
|
|
2026 |
* release the lock by calling mdi_rele_path()
|
|
|
2027 |
*/
|
|
|
2028 |
MDI_PI_HOLD(pip);
|
|
|
2029 |
MDI_PI_UNLOCK(pip);
|
|
|
2030 |
if (sb)
|
|
|
2031 |
ct->ct_path_last = pip;
|
|
|
2032 |
*ret_pip = pip;
|
|
|
2033 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
2034 |
return (MDI_SUCCESS);
|
|
|
2035 |
}
|
|
|
2036 |
/*
|
|
|
2037 |
* Path is busy.
|
|
|
2038 |
*/
|
|
|
2039 |
if (MDI_PI_IS_DRV_DISABLE_TRANSIENT(pip) ||
|
|
|
2040 |
MDI_PI_IS_TRANSIENT(pip))
|
|
|
2041 |
retry = 1;
|
|
|
2042 |
|
|
|
2043 |
/*
|
|
|
2044 |
* Keep looking for a next available online path
|
|
|
2045 |
*/
|
|
|
2046 |
do_again:
|
|
|
2047 |
next = (mdi_pathinfo_t *)MDI_PI(pip)->pi_client_link;
|
|
|
2048 |
if (next == NULL) {
|
|
|
2049 |
if (!sb) {
|
|
|
2050 |
if (preferred == 1) {
|
|
|
2051 |
/*
|
|
|
2052 |
* Looks like we reached the
|
|
|
2053 |
* end of the list. Lets enable
|
|
|
2054 |
* traversal of non preferred
|
|
|
2055 |
* paths.
|
|
|
2056 |
*/
|
|
|
2057 |
preferred = 0;
|
|
|
2058 |
next = head;
|
|
|
2059 |
} else {
|
|
|
2060 |
/*
|
|
|
2061 |
* We have done both the passes
|
|
|
2062 |
* Preferred as well as for
|
|
|
2063 |
* Non-preferred. Bail out now.
|
|
|
2064 |
*/
|
|
|
2065 |
cont = 0;
|
|
|
2066 |
}
|
|
|
2067 |
} else {
|
|
|
2068 |
/*
|
|
|
2069 |
* Standard behavior case.
|
|
|
2070 |
*/
|
|
|
2071 |
next = head;
|
|
|
2072 |
}
|
|
|
2073 |
}
|
|
|
2074 |
MDI_PI_UNLOCK(pip);
|
|
|
2075 |
if (cont == 0) {
|
|
|
2076 |
break;
|
|
|
2077 |
}
|
|
|
2078 |
pip = next;
|
|
|
2079 |
|
|
|
2080 |
if (!sb) {
|
|
|
2081 |
/*
|
|
|
2082 |
* We need to handle the selection of
|
|
|
2083 |
* non-preferred path in the following
|
|
|
2084 |
* case:
|
|
|
2085 |
*
|
|
|
2086 |
* +------+ +------+ +------+ +-----+
|
|
|
2087 |
* | A : 1| - | B : 1| - | C : 0| - |NULL |
|
|
|
2088 |
* +------+ +------+ +------+ +-----+
|
|
|
2089 |
*
|
|
|
2090 |
* If we start the search with B, we need to
|
|
|
2091 |
* skip beyond B to pick C which is non -
|
|
|
2092 |
* preferred in the second pass. The following
|
|
|
2093 |
* test, if true, will allow us to skip over
|
|
|
2094 |
* the 'start'(B in the example) to select
|
|
|
2095 |
* other non preferred elements.
|
|
|
2096 |
*/
|
|
|
2097 |
if ((start_pip != NULL) && (start_pip == pip) &&
|
|
|
2098 |
(MDI_PI(start_pip)->pi_preferred
|
|
|
2099 |
!= preferred)) {
|
|
|
2100 |
/*
|
|
|
2101 |
* try again after going past the start
|
|
|
2102 |
* pip
|
|
|
2103 |
*/
|
|
|
2104 |
MDI_PI_LOCK(pip);
|
|
|
2105 |
goto do_again;
|
|
|
2106 |
}
|
|
|
2107 |
} else {
|
|
|
2108 |
/*
|
|
|
2109 |
* Standard behavior case
|
|
|
2110 |
*/
|
|
|
2111 |
if (start == pip && preferred) {
|
|
|
2112 |
/* look for nonpreferred paths */
|
|
|
2113 |
preferred = 0;
|
|
|
2114 |
} else if (start == pip && !preferred) {
|
|
|
2115 |
/*
|
|
|
2116 |
* Exit condition
|
|
|
2117 |
*/
|
|
|
2118 |
cont = 0;
|
|
|
2119 |
}
|
|
|
2120 |
}
|
|
|
2121 |
} while (cont);
|
|
|
2122 |
break;
|
|
|
2123 |
}
|
|
|
2124 |
|
|
|
2125 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
2126 |
if (retry == 1) {
|
|
|
2127 |
return (MDI_BUSY);
|
|
|
2128 |
} else {
|
|
|
2129 |
return (MDI_NOPATH);
|
|
|
2130 |
}
|
|
|
2131 |
}
|
|
|
2132 |
|
|
|
2133 |
/*
|
|
|
2134 |
* For a client, return the next available path to any phci
|
|
|
2135 |
*
|
|
|
2136 |
* Note:
|
|
|
2137 |
* Caller should hold the branch's devinfo node to get a consistent
|
|
|
2138 |
* snap shot of the mdi_pathinfo nodes.
|
|
|
2139 |
*
|
|
|
2140 |
* Please note that even the list is stable the mdi_pathinfo
|
|
|
2141 |
* node state and properties are volatile. The caller should lock
|
|
|
2142 |
* and unlock the nodes by calling mdi_pi_lock() and
|
|
|
2143 |
* mdi_pi_unlock() functions to get a stable properties.
|
|
|
2144 |
*
|
|
|
2145 |
* If there is a need to use the nodes beyond the hold of the
|
|
|
2146 |
* devinfo node period (For ex. I/O), then mdi_pathinfo node
|
|
|
2147 |
* need to be held against unexpected removal by calling
|
|
|
2148 |
* mdi_hold_path() and should be released by calling
|
|
|
2149 |
* mdi_rele_path() on completion.
|
|
|
2150 |
*/
|
|
|
2151 |
mdi_pathinfo_t *
|
|
|
2152 |
mdi_get_next_phci_path(dev_info_t *ct_dip, mdi_pathinfo_t *pip)
|
|
|
2153 |
{
|
|
|
2154 |
mdi_client_t *ct;
|
|
|
2155 |
|
|
|
2156 |
if (!MDI_CLIENT(ct_dip))
|
|
|
2157 |
return (NULL);
|
|
|
2158 |
|
|
|
2159 |
/*
|
|
|
2160 |
* Walk through client link
|
|
|
2161 |
*/
|
|
|
2162 |
ct = (mdi_client_t *)DEVI(ct_dip)->devi_mdi_client;
|
|
|
2163 |
ASSERT(ct != NULL);
|
|
|
2164 |
|
|
|
2165 |
if (pip == NULL)
|
|
|
2166 |
return ((mdi_pathinfo_t *)ct->ct_path_head);
|
|
|
2167 |
|
|
|
2168 |
return ((mdi_pathinfo_t *)MDI_PI(pip)->pi_client_link);
|
|
|
2169 |
}
|
|
|
2170 |
|
|
|
2171 |
/*
|
|
|
2172 |
* For a phci, return the next available path to any client
|
|
|
2173 |
* Note: ditto mdi_get_next_phci_path()
|
|
|
2174 |
*/
|
|
|
2175 |
mdi_pathinfo_t *
|
|
|
2176 |
mdi_get_next_client_path(dev_info_t *ph_dip, mdi_pathinfo_t *pip)
|
|
|
2177 |
{
|
|
|
2178 |
mdi_phci_t *ph;
|
|
|
2179 |
|
|
|
2180 |
if (!MDI_PHCI(ph_dip))
|
|
|
2181 |
return (NULL);
|
|
|
2182 |
|
|
|
2183 |
/*
|
|
|
2184 |
* Walk through pHCI link
|
|
|
2185 |
*/
|
|
|
2186 |
ph = (mdi_phci_t *)DEVI(ph_dip)->devi_mdi_xhci;
|
|
|
2187 |
ASSERT(ph != NULL);
|
|
|
2188 |
|
|
|
2189 |
if (pip == NULL)
|
|
|
2190 |
return ((mdi_pathinfo_t *)ph->ph_path_head);
|
|
|
2191 |
|
|
|
2192 |
return ((mdi_pathinfo_t *)MDI_PI(pip)->pi_phci_link);
|
|
|
2193 |
}
|
|
|
2194 |
|
|
|
2195 |
/*
|
|
|
2196 |
* mdi_get_nextpath():
|
|
|
2197 |
* mdi_pathinfo node walker function. Get the next node from the
|
|
|
2198 |
* client or pHCI device list.
|
|
|
2199 |
*
|
|
|
2200 |
* XXX This is wrapper function for compatibility purposes only.
|
|
|
2201 |
*
|
|
|
2202 |
* It doesn't work under Multi-level MPxIO, where a dip
|
|
|
2203 |
* is both client and phci (which link should next_path follow?).
|
|
|
2204 |
* Once Leadville is modified to call mdi_get_next_phci/client_path,
|
|
|
2205 |
* this interface should be removed.
|
|
|
2206 |
*/
|
|
|
2207 |
void
|
|
|
2208 |
mdi_get_next_path(dev_info_t *dip, mdi_pathinfo_t *pip,
|
|
|
2209 |
mdi_pathinfo_t **ret_pip)
|
|
|
2210 |
{
|
|
|
2211 |
if (MDI_CLIENT(dip)) {
|
|
|
2212 |
*ret_pip = mdi_get_next_phci_path(dip, pip);
|
|
|
2213 |
} else if (MDI_PHCI(dip)) {
|
|
|
2214 |
*ret_pip = mdi_get_next_client_path(dip, pip);
|
|
|
2215 |
} else {
|
|
|
2216 |
*ret_pip = NULL;
|
|
|
2217 |
}
|
|
|
2218 |
}
|
|
|
2219 |
|
|
|
2220 |
/*
|
|
|
2221 |
* mdi_hold_path():
|
|
|
2222 |
* Hold the mdi_pathinfo node against unwanted unexpected free.
|
|
|
2223 |
* Return Values:
|
|
|
2224 |
* None
|
|
|
2225 |
*/
|
|
|
2226 |
void
|
|
|
2227 |
mdi_hold_path(mdi_pathinfo_t *pip)
|
|
|
2228 |
{
|
|
|
2229 |
if (pip) {
|
|
|
2230 |
MDI_PI_LOCK(pip);
|
|
|
2231 |
MDI_PI_HOLD(pip);
|
|
|
2232 |
MDI_PI_UNLOCK(pip);
|
|
|
2233 |
}
|
|
|
2234 |
}
|
|
|
2235 |
|
|
|
2236 |
|
|
|
2237 |
/*
|
|
|
2238 |
* mdi_rele_path():
|
|
|
2239 |
* Release the mdi_pathinfo node which was selected
|
|
|
2240 |
* through mdi_select_path() mechanism or manually held by
|
|
|
2241 |
* calling mdi_hold_path().
|
|
|
2242 |
* Return Values:
|
|
|
2243 |
* None
|
|
|
2244 |
*/
|
|
|
2245 |
void
|
|
|
2246 |
mdi_rele_path(mdi_pathinfo_t *pip)
|
|
|
2247 |
{
|
|
|
2248 |
if (pip) {
|
|
|
2249 |
MDI_PI_LOCK(pip);
|
|
|
2250 |
MDI_PI_RELE(pip);
|
|
|
2251 |
if (MDI_PI(pip)->pi_ref_cnt == 0) {
|
|
|
2252 |
cv_broadcast(&MDI_PI(pip)->pi_ref_cv);
|
|
|
2253 |
}
|
|
|
2254 |
MDI_PI_UNLOCK(pip);
|
|
|
2255 |
}
|
|
|
2256 |
}
|
|
|
2257 |
|
|
|
2258 |
|
|
|
2259 |
/*
|
|
|
2260 |
* mdi_pi_lock():
|
|
|
2261 |
* Lock the mdi_pathinfo node.
|
|
|
2262 |
* Note:
|
|
|
2263 |
* The caller should release the lock by calling mdi_pi_unlock()
|
|
|
2264 |
*/
|
|
|
2265 |
void
|
|
|
2266 |
mdi_pi_lock(mdi_pathinfo_t *pip)
|
|
|
2267 |
{
|
|
|
2268 |
ASSERT(pip != NULL);
|
|
|
2269 |
if (pip) {
|
|
|
2270 |
MDI_PI_LOCK(pip);
|
|
|
2271 |
}
|
|
|
2272 |
}
|
|
|
2273 |
|
|
|
2274 |
|
|
|
2275 |
/*
|
|
|
2276 |
* mdi_pi_unlock():
|
|
|
2277 |
* Unlock the mdi_pathinfo node.
|
|
|
2278 |
* Note:
|
|
|
2279 |
* The mdi_pathinfo node should have been locked with mdi_pi_lock()
|
|
|
2280 |
*/
|
|
|
2281 |
void
|
|
|
2282 |
mdi_pi_unlock(mdi_pathinfo_t *pip)
|
|
|
2283 |
{
|
|
|
2284 |
ASSERT(pip != NULL);
|
|
|
2285 |
if (pip) {
|
|
|
2286 |
MDI_PI_UNLOCK(pip);
|
|
|
2287 |
}
|
|
|
2288 |
}
|
|
|
2289 |
|
|
|
2290 |
/*
|
|
|
2291 |
* mdi_pi_find():
|
|
|
2292 |
* Search the list of mdi_pathinfo nodes attached to the
|
|
|
2293 |
* pHCI/Client device node whose path address matches "paddr".
|
|
|
2294 |
* Returns a pointer to the mdi_pathinfo node if a matching node is
|
|
|
2295 |
* found.
|
|
|
2296 |
* Return Values:
|
|
|
2297 |
* mdi_pathinfo node handle
|
|
|
2298 |
* NULL
|
|
|
2299 |
* Notes:
|
|
|
2300 |
* Caller need not hold any locks to call this function.
|
|
|
2301 |
*/
|
|
|
2302 |
mdi_pathinfo_t *
|
|
|
2303 |
mdi_pi_find(dev_info_t *pdip, char *caddr, char *paddr)
|
|
|
2304 |
{
|
|
|
2305 |
mdi_phci_t *ph;
|
|
|
2306 |
mdi_vhci_t *vh;
|
|
|
2307 |
mdi_client_t *ct;
|
|
|
2308 |
mdi_pathinfo_t *pip = NULL;
|
|
|
2309 |
|
|
|
2310 |
if ((pdip == NULL) || (paddr == NULL)) {
|
|
|
2311 |
return (NULL);
|
|
|
2312 |
}
|
|
|
2313 |
ph = i_devi_get_phci(pdip);
|
|
|
2314 |
if (ph == NULL) {
|
|
|
2315 |
/*
|
|
|
2316 |
* Invalid pHCI device, Nothing more to do.
|
|
|
2317 |
*/
|
|
|
2318 |
MDI_DEBUG(2, (CE_WARN, NULL,
|
|
|
2319 |
"!mdi_pi_find: invalid phci"));
|
|
|
2320 |
return (NULL);
|
|
|
2321 |
}
|
|
|
2322 |
|
|
|
2323 |
vh = ph->ph_vhci;
|
|
|
2324 |
if (vh == NULL) {
|
|
|
2325 |
/*
|
|
|
2326 |
* Invalid vHCI device, Nothing more to do.
|
|
|
2327 |
*/
|
|
|
2328 |
MDI_DEBUG(2, (CE_WARN, NULL,
|
|
|
2329 |
"!mdi_pi_find: invalid phci"));
|
|
|
2330 |
return (NULL);
|
|
|
2331 |
}
|
|
|
2332 |
|
|
|
2333 |
/*
|
|
|
2334 |
* Look for client device identified by caddr (guid)
|
|
|
2335 |
*/
|
|
|
2336 |
if (caddr == NULL) {
|
|
|
2337 |
/*
|
|
|
2338 |
* Find a mdi_pathinfo node under pHCI list for a matching
|
|
|
2339 |
* unit address.
|
|
|
2340 |
*/
|
|
|
2341 |
mutex_enter(&ph->ph_mutex);
|
|
|
2342 |
pip = (mdi_pathinfo_t *)ph->ph_path_head;
|
|
|
2343 |
|
|
|
2344 |
while (pip != NULL) {
|
|
|
2345 |
if (strcmp(MDI_PI(pip)->pi_addr, paddr) == 0) {
|
|
|
2346 |
break;
|
|
|
2347 |
}
|
|
|
2348 |
pip = (mdi_pathinfo_t *)MDI_PI(pip)->pi_phci_link;
|
|
|
2349 |
}
|
|
|
2350 |
mutex_exit(&ph->ph_mutex);
|
|
|
2351 |
return (pip);
|
|
|
2352 |
}
|
|
|
2353 |
|
|
|
2354 |
/*
|
|
878
|
2355 |
* XXX - Is the rest of the code in this function really necessary?
|
|
|
2356 |
* The consumers of mdi_pi_find() can search for the desired pathinfo
|
|
|
2357 |
* node by calling mdi_pi_find(pdip, NULL, paddr). Irrespective of
|
|
|
2358 |
* whether the search is based on the pathinfo nodes attached to
|
|
|
2359 |
* the pHCI or the client node, the result will be the same.
|
|
|
2360 |
*/
|
|
|
2361 |
|
|
|
2362 |
/*
|
|
0
|
2363 |
* Find the client device corresponding to 'caddr'
|
|
|
2364 |
*/
|
|
|
2365 |
mutex_enter(&mdi_mutex);
|
|
878
|
2366 |
|
|
|
2367 |
/*
|
|
|
2368 |
* XXX - Passing NULL to the following function works as long as the
|
|
|
2369 |
* the client addresses (caddr) are unique per vhci basis.
|
|
|
2370 |
*/
|
|
|
2371 |
ct = i_mdi_client_find(vh, NULL, caddr);
|
|
0
|
2372 |
if (ct == NULL) {
|
|
|
2373 |
/*
|
|
|
2374 |
* Client not found, Obviously mdi_pathinfo node has not been
|
|
|
2375 |
* created yet.
|
|
|
2376 |
*/
|
|
|
2377 |
mutex_exit(&mdi_mutex);
|
|
|
2378 |
return (pip);
|
|
|
2379 |
}
|
|
|
2380 |
|
|
|
2381 |
/*
|
|
|
2382 |
* Hold the client lock and look for a mdi_pathinfo node with matching
|
|
|
2383 |
* pHCI and paddr
|
|
|
2384 |
*/
|
|
|
2385 |
MDI_CLIENT_LOCK(ct);
|
|
|
2386 |
|
|
|
2387 |
/*
|
|
|
2388 |
* Release the global mutex as it is no more needed. Note: We always
|
|
|
2389 |
* respect the locking order while acquiring.
|
|
|
2390 |
*/
|
|
|
2391 |
mutex_exit(&mdi_mutex);
|
|
|
2392 |
|
|
|
2393 |
pip = (mdi_pathinfo_t *)ct->ct_path_head;
|
|
|
2394 |
while (pip != NULL) {
|
|
|
2395 |
/*
|
|
|
2396 |
* Compare the unit address
|
|
|
2397 |
*/
|
|
|
2398 |
if ((MDI_PI(pip)->pi_phci == ph) &&
|
|
|
2399 |
strcmp(MDI_PI(pip)->pi_addr, paddr) == 0) {
|
|
|
2400 |
break;
|
|
|
2401 |
}
|
|
|
2402 |
pip = (mdi_pathinfo_t *)MDI_PI(pip)->pi_client_link;
|
|
|
2403 |
}
|
|
|
2404 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
2405 |
return (pip);
|
|
|
2406 |
}
|
|
|
2407 |
|
|
|
2408 |
/*
|
|
|
2409 |
* mdi_pi_alloc():
|
|
|
2410 |
* Allocate and initialize a new instance of a mdi_pathinfo node.
|
|
|
2411 |
* The mdi_pathinfo node returned by this function identifies a
|
|
|
2412 |
* unique device path is capable of having properties attached
|
|
|
2413 |
* and passed to mdi_pi_online() to fully attach and online the
|
|
|
2414 |
* path and client device node.
|
|
|
2415 |
* The mdi_pathinfo node returned by this function must be
|
|
|
2416 |
* destroyed using mdi_pi_free() if the path is no longer
|
|
|
2417 |
* operational or if the caller fails to attach a client device
|
|
|
2418 |
* node when calling mdi_pi_online(). The framework will not free
|
|
|
2419 |
* the resources allocated.
|
|
|
2420 |
* This function can be called from both interrupt and kernel
|
|
|
2421 |
* contexts. DDI_NOSLEEP flag should be used while calling
|
|
|
2422 |
* from interrupt contexts.
|
|
|
2423 |
* Return Values:
|
|
|
2424 |
* MDI_SUCCESS
|
|
|
2425 |
* MDI_FAILURE
|
|
|
2426 |
* MDI_NOMEM
|
|
|
2427 |
*/
|
|
|
2428 |
/*ARGSUSED*/
|
|
|
2429 |
int
|
|
|
2430 |
mdi_pi_alloc_compatible(dev_info_t *pdip, char *cname, char *caddr, char *paddr,
|
|
|
2431 |
char **compatible, int ncompatible, int flags, mdi_pathinfo_t **ret_pip)
|
|
|
2432 |
{
|
|
|
2433 |
mdi_vhci_t *vh;
|
|
|
2434 |
mdi_phci_t *ph;
|
|
|
2435 |
mdi_client_t *ct;
|
|
|
2436 |
mdi_pathinfo_t *pip = NULL;
|
|
|
2437 |
dev_info_t *cdip;
|
|
|
2438 |
int rv = MDI_NOMEM;
|
|
878
|
2439 |
int path_allocated = 0;
|
|
0
|
2440 |
|
|
|
2441 |
if (pdip == NULL || cname == NULL || caddr == NULL || paddr == NULL ||
|
|
|
2442 |
ret_pip == NULL) {
|
|
|
2443 |
/* Nothing more to do */
|
|
|
2444 |
return (MDI_FAILURE);
|
|
|
2445 |
}
|
|
|
2446 |
|
|
|
2447 |
*ret_pip = NULL;
|
|
|
2448 |
ph = i_devi_get_phci(pdip);
|
|
|
2449 |
ASSERT(ph != NULL);
|
|
|
2450 |
if (ph == NULL) {
|
|
|
2451 |
/* Invalid pHCI device, return failure */
|
|
|
2452 |
MDI_DEBUG(1, (CE_WARN, NULL,
|
|
|
2453 |
"!mdi_pi_alloc: invalid pHCI=%p", pdip));
|
|
|
2454 |
return (MDI_FAILURE);
|
|
|
2455 |
}
|
|
|
2456 |
|
|
|
2457 |
MDI_PHCI_LOCK(ph);
|
|
|
2458 |
vh = ph->ph_vhci;
|
|
|
2459 |
if (vh == NULL) {
|
|
|
2460 |
/* Invalid vHCI device, return failure */
|
|
|
2461 |
MDI_DEBUG(1, (CE_WARN, NULL,
|
|
|
2462 |
"!mdi_pi_alloc: invalid pHCI=%p", pdip));
|
|
|
2463 |
MDI_PHCI_UNLOCK(ph);
|
|
|
2464 |
return (MDI_FAILURE);
|
|
|
2465 |
}
|
|
|
2466 |
|
|
|
2467 |
if (MDI_PHCI_IS_READY(ph) == 0) {
|
|
|
2468 |
/*
|
|
|
2469 |
* Do not allow new node creation when pHCI is in
|
|
|
2470 |
* offline/suspended states
|
|
|
2471 |
*/
|
|
|
2472 |
MDI_DEBUG(1, (CE_WARN, NULL,
|
|
|
2473 |
"mdi_pi_alloc: pHCI=%p is not ready", ph));
|
|
|
2474 |
MDI_PHCI_UNLOCK(ph);
|
|
|
2475 |
return (MDI_BUSY);
|
|
|
2476 |
}
|
|
|
2477 |
MDI_PHCI_UNSTABLE(ph);
|
|
|
2478 |
MDI_PHCI_UNLOCK(ph);
|
|
|
2479 |
|
|
878
|
2480 |
/* look for a matching client, create one if not found */
|
|
0
|
2481 |
mutex_enter(&mdi_mutex);
|
|
878
|
2482 |
ct = i_mdi_client_find(vh, cname, caddr);
|
|
0
|
2483 |
if (ct == NULL) {
|
|
878
|
2484 |
ct = i_mdi_client_alloc(vh, cname, caddr);
|
|
|
2485 |
ASSERT(ct != NULL);
|
|
0
|
2486 |
}
|
|
|
2487 |
|
|
|
2488 |
if (ct->ct_dip == NULL) {
|
|
|
2489 |
/*
|
|
|
2490 |
* Allocate a devinfo node
|
|
|
2491 |
*/
|
|
|
2492 |
ct->ct_dip = i_mdi_devinfo_create(vh, cname, caddr,
|
|
878
|
2493 |
compatible, ncompatible);
|
|
0
|
2494 |
if (ct->ct_dip == NULL) {
|
|
|
2495 |
(void) i_mdi_client_free(vh, ct);
|
|
|
2496 |
goto fail;
|
|
|
2497 |
}
|
|
|
2498 |
}
|
|
|
2499 |
cdip = ct->ct_dip;
|
|
|
2500 |
|
|
|
2501 |
DEVI(cdip)->devi_mdi_component |= MDI_COMPONENT_CLIENT;
|
|
|
2502 |
DEVI(cdip)->devi_mdi_client = (caddr_t)ct;
|
|
|
2503 |
|
|
|
2504 |
pip = (mdi_pathinfo_t *)ct->ct_path_head;
|
|
|
2505 |
while (pip != NULL) {
|
|
|
2506 |
/*
|
|
|
2507 |
* Compare the unit address
|
|
|
2508 |
*/
|
|
|
2509 |
if ((MDI_PI(pip)->pi_phci == ph) &&
|
|
|
2510 |
strcmp(MDI_PI(pip)->pi_addr, paddr) == 0) {
|
|
|
2511 |
break;
|
|
|
2512 |
}
|
|
|
2513 |
pip = (mdi_pathinfo_t *)MDI_PI(pip)->pi_client_link;
|
|
|
2514 |
}
|
|
|
2515 |
|
|
|
2516 |
if (pip == NULL) {
|
|
|
2517 |
/*
|
|
|
2518 |
* This is a new path for this client device. Allocate and
|
|
|
2519 |
* initialize a new pathinfo node
|
|
|
2520 |
*/
|
|
878
|
2521 |
pip = i_mdi_pi_alloc(ph, paddr, ct);
|
|
|
2522 |
ASSERT(pip != NULL);
|
|
|
2523 |
path_allocated = 1;
|
|
0
|
2524 |
}
|
|
|
2525 |
rv = MDI_SUCCESS;
|
|
|
2526 |
|
|
|
2527 |
fail:
|
|
|
2528 |
/*
|
|
|
2529 |
* Release the global mutex.
|
|
|
2530 |
*/
|
|
|
2531 |
mutex_exit(&mdi_mutex);
|
|
|
2532 |
|
|
|
2533 |
/*
|
|
|
2534 |
* Mark the pHCI as stable
|
|
|
2535 |
*/
|
|
|
2536 |
MDI_PHCI_LOCK(ph);
|
|
|
2537 |
MDI_PHCI_STABLE(ph);
|
|
|
2538 |
MDI_PHCI_UNLOCK(ph);
|
|
|
2539 |
*ret_pip = pip;
|
|
878
|
2540 |
|
|
|
2541 |
if (path_allocated)
|
|
|
2542 |
vhcache_pi_add(vh->vh_config, MDI_PI(pip));
|
|
|
2543 |
|
|
0
|
2544 |
return (rv);
|
|
|
2545 |
}
|
|
|
2546 |
|
|
|
2547 |
/*ARGSUSED*/
|
|
|
2548 |
int
|
|
|
2549 |
mdi_pi_alloc(dev_info_t *pdip, char *cname, char *caddr, char *paddr,
|
|
|
2550 |
int flags, mdi_pathinfo_t **ret_pip)
|
|
|
2551 |
{
|
|
|
2552 |
return (mdi_pi_alloc_compatible(pdip, cname, caddr, paddr, NULL, 0,
|
|
|
2553 |
flags, ret_pip));
|
|
|
2554 |
}
|
|
|
2555 |
|
|
|
2556 |
/*
|
|
|
2557 |
* i_mdi_pi_alloc():
|
|
|
2558 |
* Allocate a mdi_pathinfo node and add to the pHCI path list
|
|
|
2559 |
* Return Values:
|
|
|
2560 |
* mdi_pathinfo
|
|
|
2561 |
*/
|
|
|
2562 |
|
|
|
2563 |
/*ARGSUSED*/
|
|
|
2564 |
static mdi_pathinfo_t *
|
|
878
|
2565 |
i_mdi_pi_alloc(mdi_phci_t *ph, char *paddr, mdi_client_t *ct)
|
|
|
2566 |
{
|
|
|
2567 |
mdi_pathinfo_t *pip;
|
|
0
|
2568 |
int ct_circular;
|
|
|
2569 |
int ph_circular;
|
|
|
2570 |
|
|
878
|
2571 |
pip = kmem_zalloc(sizeof (struct mdi_pathinfo), KM_SLEEP);
|
|
0
|
2572 |
mutex_init(&MDI_PI(pip)->pi_mutex, NULL, MUTEX_DEFAULT, NULL);
|
|
|
2573 |
MDI_PI(pip)->pi_state = MDI_PATHINFO_STATE_INIT |
|
|
|
2574 |
MDI_PATHINFO_STATE_TRANSIENT;
|
|
|
2575 |
|
|
|
2576 |
if (MDI_PHCI_IS_USER_DISABLED(ph))
|
|
|
2577 |
MDI_PI_SET_USER_DISABLE(pip);
|
|
|
2578 |
|
|
|
2579 |
if (MDI_PHCI_IS_DRV_DISABLED_TRANSIENT(ph))
|
|
|
2580 |
MDI_PI_SET_DRV_DISABLE_TRANS(pip);
|
|
|
2581 |
|
|
|
2582 |
if (MDI_PHCI_IS_DRV_DISABLED(ph))
|
|
|
2583 |
MDI_PI_SET_DRV_DISABLE(pip);
|
|
|
2584 |
|
|
|
2585 |
MDI_PI(pip)->pi_old_state = MDI_PATHINFO_STATE_INIT;
|
|
|
2586 |
cv_init(&MDI_PI(pip)->pi_state_cv, NULL, CV_DEFAULT, NULL);
|
|
|
2587 |
MDI_PI(pip)->pi_client = ct;
|
|
|
2588 |
MDI_PI(pip)->pi_phci = ph;
|
|
878
|
2589 |
MDI_PI(pip)->pi_addr = kmem_alloc(strlen(paddr) + 1, KM_SLEEP);
|
|
0
|
2590 |
(void) strcpy(MDI_PI(pip)->pi_addr, paddr);
|
|
878
|
2591 |
(void) nvlist_alloc(&MDI_PI(pip)->pi_prop, NV_UNIQUE_NAME, KM_SLEEP);
|
|
|
2592 |
ASSERT(MDI_PI(pip)->pi_prop != NULL);
|
|
0
|
2593 |
MDI_PI(pip)->pi_pprivate = NULL;
|
|
|
2594 |
MDI_PI(pip)->pi_cprivate = NULL;
|
|
|
2595 |
MDI_PI(pip)->pi_vprivate = NULL;
|
|
|
2596 |
MDI_PI(pip)->pi_client_link = NULL;
|
|
|
2597 |
MDI_PI(pip)->pi_phci_link = NULL;
|
|
|
2598 |
MDI_PI(pip)->pi_ref_cnt = 0;
|
|
|
2599 |
MDI_PI(pip)->pi_kstats = NULL;
|
|
|
2600 |
MDI_PI(pip)->pi_preferred = 1;
|
|
|
2601 |
cv_init(&MDI_PI(pip)->pi_ref_cv, NULL, CV_DEFAULT, NULL);
|
|
|
2602 |
|
|
|
2603 |
/*
|
|
|
2604 |
* Lock both dev_info nodes against changes in parallel.
|
|
|
2605 |
*/
|
|
|
2606 |
ndi_devi_enter(ct->ct_dip, &ct_circular);
|
|
|
2607 |
ndi_devi_enter(ph->ph_dip, &ph_circular);
|
|
|
2608 |
|
|
|
2609 |
i_mdi_phci_add_path(ph, pip);
|
|
|
2610 |
i_mdi_client_add_path(ct, pip);
|
|
|
2611 |
|
|
|
2612 |
ndi_devi_exit(ph->ph_dip, ph_circular);
|
|
|
2613 |
ndi_devi_exit(ct->ct_dip, ct_circular);
|
|
|
2614 |
|
|
|
2615 |
return (pip);
|
|
|
2616 |
}
|
|
|
2617 |
|
|
|
2618 |
/*
|
|
|
2619 |
* i_mdi_phci_add_path():
|
|
|
2620 |
* Add a mdi_pathinfo node to pHCI list.
|
|
|
2621 |
* Notes:
|
|
|
2622 |
* Caller should per-pHCI mutex
|
|
|
2623 |
*/
|
|
|
2624 |
|
|
|
2625 |
static void
|
|
|
2626 |
i_mdi_phci_add_path(mdi_phci_t *ph, mdi_pathinfo_t *pip)
|
|
|
2627 |
{
|
|
|
2628 |
ASSERT(DEVI_BUSY_OWNED(ph->ph_dip));
|
|
|
2629 |
|
|
|
2630 |
if (ph->ph_path_head == NULL) {
|
|
|
2631 |
ph->ph_path_head = pip;
|
|
|
2632 |
} else {
|
|
|
2633 |
MDI_PI(ph->ph_path_tail)->pi_phci_link = MDI_PI(pip);
|
|
|
2634 |
}
|
|
|
2635 |
ph->ph_path_tail = pip;
|
|
|
2636 |
ph->ph_path_count++;
|
|
|
2637 |
}
|
|
|
2638 |
|
|
|
2639 |
/*
|
|
|
2640 |
* i_mdi_client_add_path():
|
|
|
2641 |
* Add mdi_pathinfo node to client list
|
|
|
2642 |
*/
|
|
|
2643 |
|
|
|
2644 |
static void
|
|
|
2645 |
i_mdi_client_add_path(mdi_client_t *ct, mdi_pathinfo_t *pip)
|
|
|
2646 |
{
|
|
|
2647 |
ASSERT(DEVI_BUSY_OWNED(ct->ct_dip));
|
|
|
2648 |
|
|
|
2649 |
if (ct->ct_path_head == NULL) {
|
|
|
2650 |
ct->ct_path_head = pip;
|
|
|
2651 |
} else {
|
|
|
2652 |
MDI_PI(ct->ct_path_tail)->pi_client_link = MDI_PI(pip);
|
|
|
2653 |
}
|
|
|
2654 |
ct->ct_path_tail = pip;
|
|
|
2655 |
ct->ct_path_count++;
|
|
|
2656 |
}
|
|
|
2657 |
|
|
|
2658 |
/*
|
|
|
2659 |
* mdi_pi_free():
|
|
|
2660 |
* Free the mdi_pathinfo node and also client device node if this
|
|
|
2661 |
* is the last path to the device
|
|
|
2662 |
* Return Values:
|
|
|
2663 |
* MDI_SUCCESS
|
|
|
2664 |
* MDI_FAILURE
|
|
|
2665 |
* MDI_BUSY
|
|
|
2666 |
*/
|
|
|
2667 |
|
|
|
2668 |
/*ARGSUSED*/
|
|
|
2669 |
int
|
|
|
2670 |
mdi_pi_free(mdi_pathinfo_t *pip, int flags)
|
|
|
2671 |
{
|
|
|
2672 |
int rv = MDI_SUCCESS;
|
|
|
2673 |
mdi_vhci_t *vh;
|
|
|
2674 |
mdi_phci_t *ph;
|
|
|
2675 |
mdi_client_t *ct;
|
|
|
2676 |
int (*f)();
|
|
|
2677 |
int client_held = 0;
|
|
|
2678 |
|
|
|
2679 |
MDI_PI_LOCK(pip);
|
|
|
2680 |
ph = MDI_PI(pip)->pi_phci;
|
|
|
2681 |
ASSERT(ph != NULL);
|
|
|
2682 |
if (ph == NULL) {
|
|
|
2683 |
/*
|
|
|
2684 |
* Invalid pHCI device, return failure
|
|
|
2685 |
*/
|
|
|
2686 |
MDI_DEBUG(1, (CE_WARN, NULL,
|
|
|
2687 |
"!mdi_pi_free: invalid pHCI"));
|
|
|
2688 |
MDI_PI_UNLOCK(pip);
|
|
|
2689 |
return (MDI_FAILURE);
|
|
|
2690 |
}
|
|
|
2691 |
|
|
|
2692 |
vh = ph->ph_vhci;
|
|
|
2693 |
ASSERT(vh != NULL);
|
|
|
2694 |
if (vh == NULL) {
|
|
|
2695 |
/* Invalid pHCI device, return failure */
|
|
|
2696 |
MDI_DEBUG(1, (CE_WARN, NULL,
|
|
|
2697 |
"!mdi_pi_free: invalid vHCI"));
|
|
|
2698 |
MDI_PI_UNLOCK(pip);
|
|
|
2699 |
return (MDI_FAILURE);
|
|
|
2700 |
}
|
|
|
2701 |
|
|
|
2702 |
ct = MDI_PI(pip)->pi_client;
|
|
|
2703 |
ASSERT(ct != NULL);
|
|
|
2704 |
if (ct == NULL) {
|
|
|
2705 |
/*
|
|
|
2706 |
* Invalid Client device, return failure
|
|
|
2707 |
*/
|
|
|
2708 |
MDI_DEBUG(1, (CE_WARN, NULL,
|
|
|
2709 |
"!mdi_pi_free: invalid client"));
|
|
|
2710 |
MDI_PI_UNLOCK(pip);
|
|
|
2711 |
return (MDI_FAILURE);
|
|
|
2712 |
}
|
|
|
2713 |
|
|
|
2714 |
/*
|
|
|
2715 |
* Check to see for busy condition. A mdi_pathinfo can only be freed
|
|
|
2716 |
* if the node state is either offline or init and the reference count
|
|
|
2717 |
* is zero.
|
|
|
2718 |
*/
|
|
|
2719 |
if (!(MDI_PI_IS_OFFLINE(pip) || MDI_PI_IS_INIT(pip) ||
|
|
|
2720 |
MDI_PI_IS_INITING(pip))) {
|
|
|
2721 |
/*
|
|
|
2722 |
* Node is busy
|
|
|
2723 |
*/
|
|
|
2724 |
MDI_DEBUG(1, (CE_WARN, NULL,
|
|
|
2725 |
"!mdi_pi_free: pathinfo node is busy pip=%p", pip));
|
|
|
2726 |
MDI_PI_UNLOCK(pip);
|
|
|
2727 |
return (MDI_BUSY);
|
|
|
2728 |
}
|
|
|
2729 |
|
|
|
2730 |
while (MDI_PI(pip)->pi_ref_cnt != 0) {
|
|
|
2731 |
/*
|
|
|
2732 |
* Give a chance for pending I/Os to complete.
|
|
|
2733 |
*/
|
|
|
2734 |
MDI_DEBUG(1, (CE_NOTE, ct->ct_vhci->vh_dip, "!i_mdi_pi_free: "
|
|
|
2735 |
"%d cmds still pending on path: %p\n",
|
|
|
2736 |
MDI_PI(pip)->pi_ref_cnt, pip));
|
|
|
2737 |
if (cv_timedwait(&MDI_PI(pip)->pi_ref_cv,
|
|
|
2738 |
&MDI_PI(pip)->pi_mutex,
|
|
|
2739 |
ddi_get_lbolt() + drv_usectohz(60 * 1000000)) == -1) {
|
|
|
2740 |
/*
|
|
|
2741 |
* The timeout time reached without ref_cnt being zero
|
|
|
2742 |
* being signaled.
|
|
|
2743 |
*/
|
|
|
2744 |
MDI_DEBUG(1, (CE_NOTE, ct->ct_vhci->vh_dip,
|
|
|
2745 |
"!i_mdi_pi_free: "
|
|
|
2746 |
"Timeout reached on path %p without the cond\n",
|
|
|
2747 |
pip));
|
|
|
2748 |
MDI_DEBUG(1, (CE_NOTE, ct->ct_vhci->vh_dip,
|
|
|
2749 |
"!i_mdi_pi_free: "
|
|
|
2750 |
"%d cmds still pending on path: %p\n",
|
|
|
2751 |
MDI_PI(pip)->pi_ref_cnt, pip));
|
|
|
2752 |
MDI_PI_UNLOCK(pip);
|
|
|
2753 |
return (MDI_BUSY);
|
|
|
2754 |
}
|
|
|
2755 |
}
|
|
|
2756 |
if (MDI_PI(pip)->pi_pm_held) {
|
|
|
2757 |
client_held = 1;
|
|
|
2758 |
}
|
|
|
2759 |
MDI_PI_UNLOCK(pip);
|
|
|
2760 |
|
|
878
|
2761 |
vhcache_pi_remove(vh->vh_config, MDI_PI(pip));
|
|
|
2762 |
|
|
0
|
2763 |
MDI_CLIENT_LOCK(ct);
|
|
|
2764 |
|
|
|
2765 |
/* Prevent further failovers till mdi_mutex is held */
|
|
|
2766 |
MDI_CLIENT_SET_PATH_FREE_IN_PROGRESS(ct);
|
|
|
2767 |
|
|
|
2768 |
/*
|
|
|
2769 |
* Wait till failover is complete before removing this node.
|
|
|
2770 |
*/
|
|
|
2771 |
while (MDI_CLIENT_IS_FAILOVER_IN_PROGRESS(ct))
|
|
|
2772 |
cv_wait(&ct->ct_failover_cv, &ct->ct_mutex);
|
|
|
2773 |
|
|
|
2774 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
2775 |
mutex_enter(&mdi_mutex);
|
|
|
2776 |
MDI_CLIENT_LOCK(ct);
|
|
|
2777 |
MDI_CLIENT_CLEAR_PATH_FREE_IN_PROGRESS(ct);
|
|
|
2778 |
|
|
|
2779 |
if (!MDI_PI_IS_INITING(pip)) {
|
|
|
2780 |
f = vh->vh_ops->vo_pi_uninit;
|
|
|
2781 |
if (f != NULL) {
|
|
|
2782 |
rv = (*f)(vh->vh_dip, pip, 0);
|
|
|
2783 |
}
|
|
|
2784 |
}
|
|
|
2785 |
/*
|
|
|
2786 |
* If vo_pi_uninit() completed successfully.
|
|
|
2787 |
*/
|
|
|
2788 |
if (rv == MDI_SUCCESS) {
|
|
|
2789 |
if (client_held) {
|
|
|
2790 |
MDI_DEBUG(4, (CE_NOTE, ct->ct_dip, "mdi_pi_free "
|
|
|
2791 |
"i_mdi_pm_rele_client\n"));
|
|
|
2792 |
i_mdi_pm_rele_client(ct, 1);
|
|
|
2793 |
}
|
|
|
2794 |
i_mdi_pi_free(ph, pip, ct);
|
|
|
2795 |
if (ct->ct_path_count == 0) {
|
|
|
2796 |
/*
|
|
|
2797 |
* Client lost its last path.
|
|
|
2798 |
* Clean up the client device
|
|
|
2799 |
*/
|
|
|
2800 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
2801 |
(void) i_mdi_client_free(ct->ct_vhci, ct);
|
|
|
2802 |
mutex_exit(&mdi_mutex);
|
|
|
2803 |
return (rv);
|
|
|
2804 |
}
|
|
|
2805 |
}
|
|
|
2806 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
2807 |
mutex_exit(&mdi_mutex);
|
|
878
|
2808 |
|
|
|
2809 |
if (rv == MDI_FAILURE)
|
|
|
2810 |
vhcache_pi_add(vh->vh_config, MDI_PI(pip));
|
|
|
2811 |
|
|
0
|
2812 |
return (rv);
|
|
|
2813 |
}
|
|
|
2814 |
|
|
|
2815 |
/*
|
|
|
2816 |
* i_mdi_pi_free():
|
|
|
2817 |
* Free the mdi_pathinfo node
|
|
|
2818 |
*/
|
|
|
2819 |
static void
|
|
|
2820 |
i_mdi_pi_free(mdi_phci_t *ph, mdi_pathinfo_t *pip, mdi_client_t *ct)
|
|
|
2821 |
{
|
|
|
2822 |
int ct_circular;
|
|
|
2823 |
int ph_circular;
|
|
|
2824 |
|
|
|
2825 |
/*
|
|
|
2826 |
* remove any per-path kstats
|
|
|
2827 |
*/
|
|
|
2828 |
i_mdi_pi_kstat_destroy(pip);
|
|
|
2829 |
|
|
|
2830 |
ndi_devi_enter(ct->ct_dip, &ct_circular);
|
|
|
2831 |
ndi_devi_enter(ph->ph_dip, &ph_circular);
|
|
|
2832 |
|
|
|
2833 |
i_mdi_client_remove_path(ct, pip);
|
|
|
2834 |
i_mdi_phci_remove_path(ph, pip);
|
|
|
2835 |
|
|
|
2836 |
ndi_devi_exit(ph->ph_dip, ph_circular);
|
|
|
2837 |
ndi_devi_exit(ct->ct_dip, ct_circular);
|
|
|
2838 |
|
|
|
2839 |
mutex_destroy(&MDI_PI(pip)->pi_mutex);
|
|
|
2840 |
cv_destroy(&MDI_PI(pip)->pi_state_cv);
|
|
|
2841 |
cv_destroy(&MDI_PI(pip)->pi_ref_cv);
|
|
|
2842 |
if (MDI_PI(pip)->pi_addr) {
|
|
|
2843 |
kmem_free(MDI_PI(pip)->pi_addr,
|
|
|
2844 |
strlen(MDI_PI(pip)->pi_addr) + 1);
|
|
|
2845 |
MDI_PI(pip)->pi_addr = NULL;
|
|
|
2846 |
}
|
|
|
2847 |
|
|
|
2848 |
if (MDI_PI(pip)->pi_prop) {
|
|
|
2849 |
(void) nvlist_free(MDI_PI(pip)->pi_prop);
|
|
|
2850 |
MDI_PI(pip)->pi_prop = NULL;
|
|
|
2851 |
}
|
|
|
2852 |
kmem_free(pip, sizeof (struct mdi_pathinfo));
|
|
|
2853 |
}
|
|
|
2854 |
|
|
|
2855 |
|
|
|
2856 |
/*
|
|
|
2857 |
* i_mdi_phci_remove_path():
|
|
|
2858 |
* Remove a mdi_pathinfo node from pHCI list.
|
|
|
2859 |
* Notes:
|
|
|
2860 |
* Caller should hold per-pHCI mutex
|
|
|
2861 |
*/
|
|
|
2862 |
|
|
|
2863 |
static void
|
|
|
2864 |
i_mdi_phci_remove_path(mdi_phci_t *ph, mdi_pathinfo_t *pip)
|
|
|
2865 |
{
|
|
|
2866 |
mdi_pathinfo_t *prev = NULL;
|
|
|
2867 |
mdi_pathinfo_t *path = NULL;
|
|
|
2868 |
|
|
|
2869 |
ASSERT(DEVI_BUSY_OWNED(ph->ph_dip));
|
|
|
2870 |
|
|
|
2871 |
path = ph->ph_path_head;
|
|
|
2872 |
while (path != NULL) {
|
|
|
2873 |
if (path == pip) {
|
|
|
2874 |
break;
|
|
|
2875 |
}
|
|
|
2876 |
prev = path;
|
|
|
2877 |
path = (mdi_pathinfo_t *)MDI_PI(path)->pi_phci_link;
|
|
|
2878 |
}
|
|
|
2879 |
|
|
|
2880 |
if (path) {
|
|
|
2881 |
ph->ph_path_count--;
|
|
|
2882 |
if (prev) {
|
|
|
2883 |
MDI_PI(prev)->pi_phci_link = MDI_PI(path)->pi_phci_link;
|
|
|
2884 |
} else {
|
|
|
2885 |
ph->ph_path_head =
|
|
|
2886 |
(mdi_pathinfo_t *)MDI_PI(path)->pi_phci_link;
|
|
|
2887 |
}
|
|
|
2888 |
if (ph->ph_path_tail == path) {
|
|
|
2889 |
ph->ph_path_tail = prev;
|
|
|
2890 |
}
|
|
|
2891 |
}
|
|
|
2892 |
|
|
|
2893 |
/*
|
|
|
2894 |
* Clear the pHCI link
|
|
|
2895 |
*/
|
|
|
2896 |
MDI_PI(pip)->pi_phci_link = NULL;
|
|
|
2897 |
MDI_PI(pip)->pi_phci = NULL;
|
|
|
2898 |
}
|
|
|
2899 |
|
|
|
2900 |
/*
|
|
|
2901 |
* i_mdi_client_remove_path():
|
|
|
2902 |
* Remove a mdi_pathinfo node from client path list.
|
|
|
2903 |
*/
|
|
|
2904 |
|
|
|
2905 |
static void
|
|
|
2906 |
i_mdi_client_remove_path(mdi_client_t *ct, mdi_pathinfo_t *pip)
|
|
|
2907 |
{
|
|
|
2908 |
mdi_pathinfo_t *prev = NULL;
|
|
|
2909 |
mdi_pathinfo_t *path;
|
|
|
2910 |
|
|
|
2911 |
ASSERT(DEVI_BUSY_OWNED(ct->ct_dip));
|
|
|
2912 |
|
|
|
2913 |
path = ct->ct_path_head;
|
|
|
2914 |
while (path != NULL) {
|
|
|
2915 |
if (path == pip) {
|
|
|
2916 |
break;
|
|
|
2917 |
}
|
|
|
2918 |
prev = path;
|
|
|
2919 |
path = (mdi_pathinfo_t *)MDI_PI(path)->pi_client_link;
|
|
|
2920 |
}
|
|
|
2921 |
|
|
|
2922 |
if (path) {
|
|
|
2923 |
ct->ct_path_count--;
|
|
|
2924 |
if (prev) {
|
|
|
2925 |
MDI_PI(prev)->pi_client_link =
|
|
|
2926 |
MDI_PI(path)->pi_client_link;
|
|
|
2927 |
} else {
|
|
|
2928 |
ct->ct_path_head =
|
|
|
2929 |
(mdi_pathinfo_t *)MDI_PI(path)->pi_client_link;
|
|
|
2930 |
}
|
|
|
2931 |
if (ct->ct_path_tail == path) {
|
|
|
2932 |
ct->ct_path_tail = prev;
|
|
|
2933 |
}
|
|
|
2934 |
if (ct->ct_path_last == path) {
|
|
|
2935 |
ct->ct_path_last = ct->ct_path_head;
|
|
|
2936 |
}
|
|
|
2937 |
}
|
|
|
2938 |
MDI_PI(pip)->pi_client_link = NULL;
|
|
|
2939 |
MDI_PI(pip)->pi_client = NULL;
|
|
|
2940 |
}
|
|
|
2941 |
|
|
|
2942 |
/*
|
|
|
2943 |
* i_mdi_pi_state_change():
|
|
|
2944 |
* online a mdi_pathinfo node
|
|
|
2945 |
*
|
|
|
2946 |
* Return Values:
|
|
|
2947 |
* MDI_SUCCESS
|
|
|
2948 |
* MDI_FAILURE
|
|
|
2949 |
*/
|
|
|
2950 |
/*ARGSUSED*/
|
|
|
2951 |
static int
|
|
|
2952 |
i_mdi_pi_state_change(mdi_pathinfo_t *pip, mdi_pathinfo_state_t state, int flag)
|
|
|
2953 |
{
|
|
|
2954 |
int rv = MDI_SUCCESS;
|
|
|
2955 |
mdi_vhci_t *vh;
|
|
|
2956 |
mdi_phci_t *ph;
|
|
|
2957 |
mdi_client_t *ct;
|
|
|
2958 |
int (*f)();
|
|
|
2959 |
dev_info_t *cdip;
|
|
|
2960 |
|
|
|
2961 |
MDI_PI_LOCK(pip);
|
|
|
2962 |
|
|
|
2963 |
ph = MDI_PI(pip)->pi_phci;
|
|
|
2964 |
ASSERT(ph);
|
|
|
2965 |
if (ph == NULL) {
|
|
|
2966 |
/*
|
|
|
2967 |
* Invalid pHCI device, fail the request
|
|
|
2968 |
*/
|
|
|
2969 |
MDI_PI_UNLOCK(pip);
|
|
|
2970 |
MDI_DEBUG(1, (CE_WARN, NULL,
|
|
|
2971 |
"!mdi_pi_state_change: invalid phci"));
|
|
|
2972 |
return (MDI_FAILURE);
|
|
|
2973 |
}
|
|
|
2974 |
|
|
|
2975 |
vh = ph->ph_vhci;
|
|
|
2976 |
ASSERT(vh);
|
|
|
2977 |
if (vh == NULL) {
|
|
|
2978 |
/*
|
|
|
2979 |
* Invalid vHCI device, fail the request
|
|
|
2980 |
*/
|
|
|
2981 |
MDI_PI_UNLOCK(pip);
|
|
|
2982 |
MDI_DEBUG(1, (CE_WARN, NULL,
|
|
|
2983 |
"!mdi_pi_state_change: invalid vhci"));
|
|
|
2984 |
return (MDI_FAILURE);
|
|
|
2985 |
}
|
|
|
2986 |
|
|
|
2987 |
ct = MDI_PI(pip)->pi_client;
|
|
|
2988 |
ASSERT(ct != NULL);
|
|
|
2989 |
if (ct == NULL) {
|
|
|
2990 |
/*
|
|
|
2991 |
* Invalid client device, fail the request
|
|
|
2992 |
*/
|
|
|
2993 |
MDI_PI_UNLOCK(pip);
|
|
|
2994 |
MDI_DEBUG(1, (CE_WARN, NULL,
|
|
|
2995 |
"!mdi_pi_state_change: invalid client"));
|
|
|
2996 |
return (MDI_FAILURE);
|
|
|
2997 |
}
|
|
|
2998 |
|
|
|
2999 |
/*
|
|
|
3000 |
* If this path has not been initialized yet, Callback vHCI driver's
|
|
|
3001 |
* pathinfo node initialize entry point
|
|
|
3002 |
*/
|
|
|
3003 |
|
|
|
3004 |
if (MDI_PI_IS_INITING(pip)) {
|
|
|
3005 |
MDI_PI_UNLOCK(pip);
|
|
|
3006 |
f = vh->vh_ops->vo_pi_init;
|
|
|
3007 |
if (f != NULL) {
|
|
|
3008 |
rv = (*f)(vh->vh_dip, pip, 0);
|
|
|
3009 |
if (rv != MDI_SUCCESS) {
|
|
|
3010 |
MDI_DEBUG(1, (CE_WARN, vh->vh_dip,
|
|
|
3011 |
"!vo_pi_init: failed vHCI=0x%p, pip=0x%p",
|
|
|
3012 |
vh, pip));
|
|
|
3013 |
return (MDI_FAILURE);
|
|
|
3014 |
}
|
|
|
3015 |
}
|
|
|
3016 |
MDI_PI_LOCK(pip);
|
|
|
3017 |
MDI_PI_CLEAR_TRANSIENT(pip);
|
|
|
3018 |
}
|
|
|
3019 |
|
|
|
3020 |
/*
|
|
|
3021 |
* Do not allow state transition when pHCI is in offline/suspended
|
|
|
3022 |
* states
|
|
|
3023 |
*/
|
|
|
3024 |
i_mdi_phci_lock(ph, pip);
|
|
|
3025 |
if (MDI_PHCI_IS_READY(ph) == 0) {
|
|
|
3026 |
MDI_DEBUG(1, (CE_WARN, NULL,
|
|
|
3027 |
"!mdi_pi_state_change: pHCI not ready, pHCI=%p", ph));
|
|
|
3028 |
MDI_PI_UNLOCK(pip);
|
|
|
3029 |
i_mdi_phci_unlock(ph);
|
|
|
3030 |
return (MDI_BUSY);
|
|
|
3031 |
}
|
|
|
3032 |
MDI_PHCI_UNSTABLE(ph);
|
|
|
3033 |
i_mdi_phci_unlock(ph);
|
|
|
3034 |
|
|
|
3035 |
/*
|
|
|
3036 |
* Check if mdi_pathinfo state is in transient state.
|
|
|
3037 |
* If yes, offlining is in progress and wait till transient state is
|
|
|
3038 |
* cleared.
|
|
|
3039 |
*/
|
|
|
3040 |
if (MDI_PI_IS_TRANSIENT(pip)) {
|
|
|
3041 |
while (MDI_PI_IS_TRANSIENT(pip)) {
|
|
|
3042 |
cv_wait(&MDI_PI(pip)->pi_state_cv,
|
|
|
3043 |
&MDI_PI(pip)->pi_mutex);
|
|
|
3044 |
}
|
|
|
3045 |
}
|
|
|
3046 |
|
|
|
3047 |
/*
|
|
|
3048 |
* Grab the client lock in reverse order sequence and release the
|
|
|
3049 |
* mdi_pathinfo mutex.
|
|
|
3050 |
*/
|
|
|
3051 |
i_mdi_client_lock(ct, pip);
|
|
|
3052 |
MDI_PI_UNLOCK(pip);
|
|
|
3053 |
|
|
|
3054 |
/*
|
|
|
3055 |
* Wait till failover state is cleared
|
|
|
3056 |
*/
|
|
|
3057 |
while (MDI_CLIENT_IS_FAILOVER_IN_PROGRESS(ct))
|
|
|
3058 |
cv_wait(&ct->ct_failover_cv, &ct->ct_mutex);
|
|
|
3059 |
|
|
|
3060 |
/*
|
|
|
3061 |
* Mark the mdi_pathinfo node state as transient
|
|
|
3062 |
*/
|
|
|
3063 |
MDI_PI_LOCK(pip);
|
|
|
3064 |
switch (state) {
|
|
|
3065 |
case MDI_PATHINFO_STATE_ONLINE:
|
|
|
3066 |
MDI_PI_SET_ONLINING(pip);
|
|
|
3067 |
break;
|
|
|
3068 |
|
|
|
3069 |
case MDI_PATHINFO_STATE_STANDBY:
|
|
|
3070 |
MDI_PI_SET_STANDBYING(pip);
|
|
|
3071 |
break;
|
|
|
3072 |
|
|
|
3073 |
case MDI_PATHINFO_STATE_FAULT:
|
|
|
3074 |
/*
|
|
|
3075 |
* Mark the pathinfo state as FAULTED
|
|
|
3076 |
*/
|
|
|
3077 |
MDI_PI_SET_FAULTING(pip);
|
|
|
3078 |
MDI_PI_ERRSTAT(pip, MDI_PI_HARDERR);
|
|
|
3079 |
break;
|
|
|
3080 |
|
|
|
3081 |
case MDI_PATHINFO_STATE_OFFLINE:
|
|
|
3082 |
/*
|
|
|
3083 |
* ndi_devi_offline() cannot hold pip or ct locks.
|
|
|
3084 |
*/
|
|
|
3085 |
MDI_PI_UNLOCK(pip);
|
|
|
3086 |
/*
|
|
|
3087 |
* Do not offline if path will become last path and path
|
|
|
3088 |
* is busy for user initiated events.
|
|
|
3089 |
*/
|
|
|
3090 |
cdip = ct->ct_dip;
|
|
|
3091 |
if ((flag & NDI_DEVI_REMOVE) &&
|
|
|
3092 |
(MDI_CLIENT_STATE(ct) == MDI_CLIENT_STATE_DEGRADED)) {
|
|
|
3093 |
i_mdi_client_unlock(ct);
|
|
|
3094 |
rv = ndi_devi_offline(cdip, 0);
|
|
|
3095 |
if (rv != NDI_SUCCESS) {
|
|
|
3096 |
/*
|
|
|
3097 |
* Convert to MDI error code
|
|
|
3098 |
*/
|
|
|
3099 |
switch (rv) {
|
|
|
3100 |
case NDI_BUSY:
|
|
|
3101 |
rv = MDI_BUSY;
|
|
|
3102 |
break;
|
|
|
3103 |
default:
|
|
|
3104 |
rv = MDI_FAILURE;
|
|
|
3105 |
break;
|
|
|
3106 |
}
|
|
|
3107 |
goto state_change_exit;
|
|
|
3108 |
} else {
|
|
|
3109 |
i_mdi_client_lock(ct, NULL);
|
|
|
3110 |
}
|
|
|
3111 |
}
|
|
|
3112 |
/*
|
|
|
3113 |
* Mark the mdi_pathinfo node state as transient
|
|
|
3114 |
*/
|
|
|
3115 |
MDI_PI_LOCK(pip);
|
|
|
3116 |
MDI_PI_SET_OFFLINING(pip);
|
|
|
3117 |
break;
|
|
|
3118 |
}
|
|
|
3119 |
MDI_PI_UNLOCK(pip);
|
|
|
3120 |
MDI_CLIENT_UNSTABLE(ct);
|
|
|
3121 |
i_mdi_client_unlock(ct);
|
|
|
3122 |
|
|
|
3123 |
f = vh->vh_ops->vo_pi_state_change;
|
|
|
3124 |
if (f != NULL) {
|
|
|
3125 |
rv = (*f)(vh->vh_dip, pip, state, 0, flag);
|
|
|
3126 |
if (rv == MDI_NOT_SUPPORTED) {
|
|
|
3127 |
MDI_CLIENT_SET_DEV_NOT_SUPPORTED(ct);
|
|
|
3128 |
}
|
|
|
3129 |
if (rv != MDI_SUCCESS) {
|
|
|
3130 |
MDI_DEBUG(2, (CE_WARN, vh->vh_dip,
|
|
|
3131 |
"!vo_pi_state_change: failed rv = %x", rv));
|
|
|
3132 |
}
|
|
|
3133 |
}
|
|
|
3134 |
MDI_CLIENT_LOCK(ct);
|
|
|
3135 |
MDI_PI_LOCK(pip);
|
|
|
3136 |
if (MDI_PI_IS_TRANSIENT(pip)) {
|
|
|
3137 |
if (rv == MDI_SUCCESS) {
|
|
|
3138 |
MDI_PI_CLEAR_TRANSIENT(pip);
|
|
|
3139 |
} else {
|
|
|
3140 |
MDI_PI(pip)->pi_state = MDI_PI_OLD_STATE(pip);
|
|
|
3141 |
}
|
|
|
3142 |
}
|
|
|
3143 |
|
|
|
3144 |
/*
|
|
|
3145 |
* Wake anyone waiting for this mdi_pathinfo node
|
|
|
3146 |
*/
|
|
|
3147 |
cv_broadcast(&MDI_PI(pip)->pi_state_cv);
|
|
|
3148 |
MDI_PI_UNLOCK(pip);
|
|
|
3149 |
|
|
|
3150 |
/*
|
|
|
3151 |
* Mark the client device as stable
|
|
|
3152 |
*/
|
|
|
3153 |
MDI_CLIENT_STABLE(ct);
|
|
|
3154 |
if (rv == MDI_SUCCESS) {
|
|
|
3155 |
if (ct->ct_unstable == 0) {
|
|
|
3156 |
cdip = ct->ct_dip;
|
|
|
3157 |
|
|
|
3158 |
/*
|
|
|
3159 |
* Onlining the mdi_pathinfo node will impact the
|
|
|
3160 |
* client state Update the client and dev_info node
|
|
|
3161 |
* state accordingly
|
|
|
3162 |
*/
|
|
|
3163 |
rv = NDI_SUCCESS;
|
|
|
3164 |
i_mdi_client_update_state(ct);
|
|
|
3165 |
switch (MDI_CLIENT_STATE(ct)) {
|
|
|
3166 |
case MDI_CLIENT_STATE_OPTIMAL:
|
|
|
3167 |
case MDI_CLIENT_STATE_DEGRADED:
|
|
|
3168 |
if (cdip &&
|
|
|
3169 |
(i_ddi_node_state(cdip) < DS_READY) &&
|
|
|
3170 |
((state == MDI_PATHINFO_STATE_ONLINE) ||
|
|
|
3171 |
(state == MDI_PATHINFO_STATE_STANDBY))) {
|
|
|
3172 |
|
|
|
3173 |
i_mdi_client_unlock(ct);
|
|
|
3174 |
/*
|
|
|
3175 |
* Must do ndi_devi_online() through
|
|
|
3176 |
* hotplug thread for deferred
|
|
|
3177 |
* attach mechanism to work
|
|
|
3178 |
*/
|
|
|
3179 |
rv = ndi_devi_online(cdip, 0);
|
|
|
3180 |
i_mdi_client_lock(ct, NULL);
|
|
|
3181 |
if ((rv != NDI_SUCCESS) &&
|
|
|
3182 |
(MDI_CLIENT_STATE(ct) ==
|
|
|
3183 |
MDI_CLIENT_STATE_DEGRADED)) {
|
|
|
3184 |
/*
|
|
|
3185 |
* ndi_devi_online failed.
|
|
|
3186 |
* Reset client flags to
|
|
|
3187 |
* offline.
|
|
|
3188 |
*/
|
|
|
3189 |
MDI_DEBUG(1, (CE_WARN, cdip,
|
|
|
3190 |
"!ndi_devi_online: failed "
|
|
|
3191 |
" Error: %x", rv));
|
|
|
3192 |
MDI_CLIENT_SET_OFFLINE(ct);
|
|
|
3193 |
}
|
|
|
3194 |
if (rv != NDI_SUCCESS) {
|
|
|
3195 |
/* Reset the path state */
|
|
|
3196 |
MDI_PI_LOCK(pip);
|
|
|
3197 |
MDI_PI(pip)->pi_state =
|
|
|
3198 |
MDI_PI_OLD_STATE(pip);
|
|
|
3199 |
MDI_PI_UNLOCK(pip);
|
|
|
3200 |
}
|
|
|
3201 |
}
|
|
|
3202 |
break;
|
|
|
3203 |
|
|
|
3204 |
case MDI_CLIENT_STATE_FAILED:
|
|
|
3205 |
/*
|
|
|
3206 |
* This is the last path case for
|
|
|
3207 |
* non-user initiated events.
|
|
|
3208 |
*/
|
|
|
3209 |
if (((flag & NDI_DEVI_REMOVE) == 0) &&
|
|
|
3210 |
cdip && (i_ddi_node_state(cdip) >=
|
|
|
3211 |
DS_INITIALIZED)) {
|
|
|
3212 |
i_mdi_client_unlock(ct);
|
|
|
3213 |
rv = ndi_devi_offline(cdip, 0);
|
|
|
3214 |
i_mdi_client_lock(ct, NULL);
|
|
|
3215 |
|
|
|
3216 |
if (rv != NDI_SUCCESS) {
|
|
|
3217 |
/*
|
|
|
3218 |
* ndi_devi_offline failed.
|
|
|
3219 |
* Reset client flags to
|
|
|
3220 |
* online as the path could not
|
|
|
3221 |
* be offlined.
|
|
|
3222 |
*/
|
|
|
3223 |
MDI_DEBUG(1, (CE_WARN, cdip,
|
|
|
3224 |
"!ndi_devi_offline: failed "
|
|
|
3225 |
" Error: %x", rv));
|
|
|
3226 |
MDI_CLIENT_SET_ONLINE(ct);
|
|
|
3227 |
}
|
|
|
3228 |
}
|
|
|
3229 |
break;
|
|
|
3230 |
}
|
|
|
3231 |
/*
|
|
|
3232 |
* Convert to MDI error code
|
|
|
3233 |
*/
|
|
|
3234 |
switch (rv) {
|
|
|
3235 |
case NDI_SUCCESS:
|
|
|
3236 |
MDI_CLIENT_SET_REPORT_DEV_NEEDED(ct);
|
|
|
3237 |
i_mdi_report_path_state(ct, pip);
|
|
|
3238 |
rv = MDI_SUCCESS;
|
|
|
3239 |
break;
|
|
|
3240 |
case NDI_BUSY:
|
|
|
3241 |
rv = MDI_BUSY;
|
|
|
3242 |
break;
|
|
|
3243 |
default:
|
|
|
3244 |
rv = MDI_FAILURE;
|
|
|
3245 |
break;
|
|
|
3246 |
}
|
|
|
3247 |
}
|
|
|
3248 |
}
|
|
|
3249 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
3250 |
|
|
|
3251 |
state_change_exit:
|
|
|
3252 |
/*
|
|
|
3253 |
* Mark the pHCI as stable again.
|
|
|
3254 |
*/
|
|
|
3255 |
MDI_PHCI_LOCK(ph);
|
|
|
3256 |
MDI_PHCI_STABLE(ph);
|
|
|
3257 |
MDI_PHCI_UNLOCK(ph);
|
|
|
3258 |
return (rv);
|
|
|
3259 |
}
|
|
|
3260 |
|
|
|
3261 |
/*
|
|
|
3262 |
* mdi_pi_online():
|
|
|
3263 |
* Place the path_info node in the online state. The path is
|
|
|
3264 |
* now available to be selected by mdi_select_path() for
|
|
|
3265 |
* transporting I/O requests to client devices.
|
|
|
3266 |
* Return Values:
|
|
|
3267 |
* MDI_SUCCESS
|
|
|
3268 |
* MDI_FAILURE
|
|
|
3269 |
*/
|
|
|
3270 |
int
|
|
|
3271 |
mdi_pi_online(mdi_pathinfo_t *pip, int flags)
|
|
|
3272 |
{
|
|
|
3273 |
mdi_client_t *ct = MDI_PI(pip)->pi_client;
|
|
|
3274 |
dev_info_t *cdip;
|
|
|
3275 |
int client_held = 0;
|
|
|
3276 |
int rv;
|
|
|
3277 |
|
|
|
3278 |
ASSERT(ct != NULL);
|
|
|
3279 |
rv = i_mdi_pi_state_change(pip, MDI_PATHINFO_STATE_ONLINE, flags);
|
|
|
3280 |
if (rv != MDI_SUCCESS)
|
|
|
3281 |
return (rv);
|
|
|
3282 |
|
|
|
3283 |
MDI_PI_LOCK(pip);
|
|
|
3284 |
if (MDI_PI(pip)->pi_pm_held == 0) {
|
|
|
3285 |
MDI_DEBUG(4, (CE_NOTE, ct->ct_dip, "mdi_pi_online "
|
|
|
3286 |
"i_mdi_pm_hold_pip\n"));
|
|
|
3287 |
i_mdi_pm_hold_pip(pip);
|
|
|
3288 |
client_held = 1;
|
|
|
3289 |
}
|
|
|
3290 |
MDI_PI_UNLOCK(pip);
|
|
|
3291 |
|
|
|
3292 |
if (client_held) {
|
|
|
3293 |
MDI_CLIENT_LOCK(ct);
|
|
|
3294 |
if (ct->ct_power_cnt == 0) {
|
|
|
3295 |
rv = i_mdi_power_all_phci(ct);
|
|
|
3296 |
}
|
|
|
3297 |
|
|
|
3298 |
MDI_DEBUG(4, (CE_NOTE, ct->ct_dip, "mdi_pi_online "
|
|
|
3299 |
"i_mdi_pm_hold_client\n"));
|
|
|
3300 |
i_mdi_pm_hold_client(ct, 1);
|
|
|
3301 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
3302 |
}
|
|
|
3303 |
|
|
|
3304 |
/*
|
|
|
3305 |
* Create the per-path (pathinfo) IO and error kstats which
|
|
|
3306 |
* are reported via iostat(1m).
|
|
|
3307 |
*
|
|
|
3308 |
* Defer creating the per-path kstats if device is not yet
|
|
|
3309 |
* attached; the names of the kstats are constructed in part
|
|
|
3310 |
* using the devices instance number which is assigned during
|
|
|
3311 |
* process of attaching the client device.
|
|
|
3312 |
*
|
|
|
3313 |
* The framework post_attach handler, mdi_post_attach(), is
|
|
|
3314 |
* is responsible for initializing the client's pathinfo list
|
|
|
3315 |
* once successfully attached.
|
|
|
3316 |
*/
|
|
|
3317 |
cdip = ct->ct_dip;
|
|
|
3318 |
ASSERT(cdip);
|
|
|
3319 |
if (cdip == NULL || (i_ddi_node_state(cdip) < DS_ATTACHED))
|
|
|
3320 |
return (rv);
|
|
|
3321 |
|
|
|
3322 |
MDI_CLIENT_LOCK(ct);
|
|
|
3323 |
rv = i_mdi_pi_kstat_create(pip);
|
|
|
3324 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
3325 |
return (rv);
|
|
|
3326 |
}
|
|
|
3327 |
|
|
|
3328 |
/*
|
|
|
3329 |
* mdi_pi_standby():
|
|
|
3330 |
* Place the mdi_pathinfo node in standby state
|
|
|
3331 |
*
|
|
|
3332 |
* Return Values:
|
|
|
3333 |
* MDI_SUCCESS
|
|
|
3334 |
* MDI_FAILURE
|
|
|
3335 |
*/
|
|
|
3336 |
int
|
|
|
3337 |
mdi_pi_standby(mdi_pathinfo_t *pip, int flags)
|
|
|
3338 |
{
|
|
|
3339 |
return (i_mdi_pi_state_change(pip, MDI_PATHINFO_STATE_STANDBY, flags));
|
|
|
3340 |
}
|
|
|
3341 |
|
|
|
3342 |
/*
|
|
|
3343 |
* mdi_pi_fault():
|
|
|
3344 |
* Place the mdi_pathinfo node in fault'ed state
|
|
|
3345 |
* Return Values:
|
|
|
3346 |
* MDI_SUCCESS
|
|
|
3347 |
* MDI_FAILURE
|
|
|
3348 |
*/
|
|
|
3349 |
int
|
|
|
3350 |
mdi_pi_fault(mdi_pathinfo_t *pip, int flags)
|
|
|
3351 |
{
|
|
|
3352 |
return (i_mdi_pi_state_change(pip, MDI_PATHINFO_STATE_FAULT, flags));
|
|
|
3353 |
}
|
|
|
3354 |
|
|
|
3355 |
/*
|
|
|
3356 |
* mdi_pi_offline():
|
|
|
3357 |
* Offline a mdi_pathinfo node.
|
|
|
3358 |
* Return Values:
|
|
|
3359 |
* MDI_SUCCESS
|
|
|
3360 |
* MDI_FAILURE
|
|
|
3361 |
*/
|
|
|
3362 |
int
|
|
|
3363 |
mdi_pi_offline(mdi_pathinfo_t *pip, int flags)
|
|
|
3364 |
{
|
|
|
3365 |
int ret, client_held = 0;
|
|
|
3366 |
mdi_client_t *ct;
|
|
|
3367 |
|
|
|
3368 |
ret = i_mdi_pi_state_change(pip, MDI_PATHINFO_STATE_OFFLINE, flags);
|
|
|
3369 |
|
|
|
3370 |
if (ret == MDI_SUCCESS) {
|
|
|
3371 |
MDI_PI_LOCK(pip);
|
|
|
3372 |
if (MDI_PI(pip)->pi_pm_held) {
|
|
|
3373 |
client_held = 1;
|
|
|
3374 |
}
|
|
|
3375 |
MDI_PI_UNLOCK(pip);
|
|
|
3376 |
|
|
|
3377 |
if (client_held) {
|
|
|
3378 |
ct = MDI_PI(pip)->pi_client;
|
|
|
3379 |
MDI_CLIENT_LOCK(ct);
|
|
|
3380 |
MDI_DEBUG(4, (CE_NOTE, ct->ct_dip,
|
|
|
3381 |
"mdi_pi_offline i_mdi_pm_rele_client\n"));
|
|
|
3382 |
i_mdi_pm_rele_client(ct, 1);
|
|
|
3383 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
3384 |
}
|
|
|
3385 |
}
|
|
|
3386 |
|
|
|
3387 |
return (ret);
|
|
|
3388 |
}
|
|
|
3389 |
|
|
|
3390 |
/*
|
|
|
3391 |
* i_mdi_pi_offline():
|
|
|
3392 |
* Offline a mdi_pathinfo node and call the vHCI driver's callback
|
|
|
3393 |
*/
|
|
|
3394 |
static int
|
|
|
3395 |
i_mdi_pi_offline(mdi_pathinfo_t *pip, int flags)
|
|
|
3396 |
{
|
|
|
3397 |
dev_info_t *vdip = NULL;
|
|
|
3398 |
mdi_vhci_t *vh = NULL;
|
|
|
3399 |
mdi_client_t *ct = NULL;
|
|
|
3400 |
int (*f)();
|
|
|
3401 |
int rv;
|
|
|
3402 |
|
|
|
3403 |
MDI_PI_LOCK(pip);
|
|
|
3404 |
ct = MDI_PI(pip)->pi_client;
|
|
|
3405 |
ASSERT(ct != NULL);
|
|
|
3406 |
|
|
|
3407 |
while (MDI_PI(pip)->pi_ref_cnt != 0) {
|
|
|
3408 |
/*
|
|
|
3409 |
* Give a chance for pending I/Os to complete.
|
|
|
3410 |
*/
|
|
|
3411 |
MDI_DEBUG(1, (CE_NOTE, vdip, "!i_mdi_pi_offline: "
|
|
|
3412 |
"%d cmds still pending on path: %p\n",
|
|
|
3413 |
MDI_PI(pip)->pi_ref_cnt, pip));
|
|
|
3414 |
if (cv_timedwait(&MDI_PI(pip)->pi_ref_cv,
|
|
|
3415 |
&MDI_PI(pip)->pi_mutex,
|
|
|
3416 |
ddi_get_lbolt() + drv_usectohz(60 * 1000000)) == -1) {
|
|
|
3417 |
/*
|
|
|
3418 |
* The timeout time reached without ref_cnt being zero
|
|
|
3419 |
* being signaled.
|
|
|
3420 |
*/
|
|
|
3421 |
MDI_DEBUG(1, (CE_NOTE, vdip, "!i_mdi_pi_offline: "
|
|
|
3422 |
"Timeout reached on path %p without the cond\n",
|
|
|
3423 |
pip));
|
|
|
3424 |
MDI_DEBUG(1, (CE_NOTE, vdip, "!i_mdi_pi_offline: "
|
|
|
3425 |
"%d cmds still pending on path: %p\n",
|
|
|
3426 |
MDI_PI(pip)->pi_ref_cnt, pip));
|
|
|
3427 |
}
|
|
|
3428 |
}
|
|
|
3429 |
vh = ct->ct_vhci;
|
|
|
3430 |
vdip = vh->vh_dip;
|
|
|
3431 |
|
|
|
3432 |
/*
|
|
|
3433 |
* Notify vHCI that has registered this event
|
|
|
3434 |
*/
|
|
|
3435 |
ASSERT(vh->vh_ops);
|
|
|
3436 |
f = vh->vh_ops->vo_pi_state_change;
|
|
|
3437 |
|
|
|
3438 |
if (f != NULL) {
|
|
|
3439 |
MDI_PI_UNLOCK(pip);
|
|
|
3440 |
if ((rv = (*f)(vdip, pip, MDI_PATHINFO_STATE_OFFLINE, 0,
|
|
|
3441 |
flags)) != MDI_SUCCESS) {
|
|
|
3442 |
MDI_DEBUG(1, (CE_WARN, vdip, "!vo_path_offline failed "
|
|
|
3443 |
"vdip 0x%x, pip 0x%x", vdip, pip));
|
|
|
3444 |
}
|
|
|
3445 |
MDI_PI_LOCK(pip);
|
|
|
3446 |
}
|
|
|
3447 |
|
|
|
3448 |
/*
|
|
|
3449 |
* Set the mdi_pathinfo node state and clear the transient condition
|
|
|
3450 |
*/
|
|
|
3451 |
MDI_PI_SET_OFFLINE(pip);
|
|
|
3452 |
cv_broadcast(&MDI_PI(pip)->pi_state_cv);
|
|
|
3453 |
MDI_PI_UNLOCK(pip);
|
|
|
3454 |
|
|
|
3455 |
MDI_CLIENT_LOCK(ct);
|
|
|
3456 |
if (rv == MDI_SUCCESS) {
|
|
|
3457 |
if (ct->ct_unstable == 0) {
|
|
|
3458 |
dev_info_t *cdip = ct->ct_dip;
|
|
|
3459 |
|
|
|
3460 |
/*
|
|
|
3461 |
* Onlining the mdi_pathinfo node will impact the
|
|
|
3462 |
* client state Update the client and dev_info node
|
|
|
3463 |
* state accordingly
|
|
|
3464 |
*/
|
|
|
3465 |
i_mdi_client_update_state(ct);
|
|
|
3466 |
rv = NDI_SUCCESS;
|
|
|
3467 |
if (MDI_CLIENT_STATE(ct) == MDI_CLIENT_STATE_FAILED) {
|
|
|
3468 |
if (cdip &&
|
|
|
3469 |
(i_ddi_node_state(cdip) >=
|
|
|
3470 |
DS_INITIALIZED)) {
|
|
|
3471 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
3472 |
rv = ndi_devi_offline(cdip, 0);
|
|
|
3473 |
MDI_CLIENT_LOCK(ct);
|
|
|
3474 |
if (rv != NDI_SUCCESS) {
|
|
|
3475 |
/*
|
|
|
3476 |
* ndi_devi_offline failed.
|
|
|
3477 |
* Reset client flags to
|
|
|
3478 |
* online.
|
|
|
3479 |
*/
|
|
|
3480 |
MDI_DEBUG(4, (CE_WARN, cdip,
|
|
|
3481 |
"!ndi_devi_offline: failed "
|
|
|
3482 |
" Error: %x", rv));
|
|
|
3483 |
MDI_CLIENT_SET_ONLINE(ct);
|
|
|
3484 |
}
|
|
|
3485 |
}
|
|
|
3486 |
}
|
|
|
3487 |
/*
|
|
|
3488 |
* Convert to MDI error code
|
|
|
3489 |
*/
|
|
|
3490 |
switch (rv) {
|
|
|
3491 |
case NDI_SUCCESS:
|
|
|
3492 |
rv = MDI_SUCCESS;
|
|
|
3493 |
break;
|
|
|
3494 |
case NDI_BUSY:
|
|
|
3495 |
rv = MDI_BUSY;
|
|
|
3496 |
break;
|
|
|
3497 |
default:
|
|
|
3498 |
rv = MDI_FAILURE;
|
|
|
3499 |
break;
|
|
|
3500 |
}
|
|
|
3501 |
}
|
|
|
3502 |
MDI_CLIENT_SET_REPORT_DEV_NEEDED(ct);
|
|
|
3503 |
i_mdi_report_path_state(ct, pip);
|
|
|
3504 |
}
|
|
|
3505 |
|
|
|
3506 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
3507 |
|
|
|
3508 |
/*
|
|
|
3509 |
* Change in the mdi_pathinfo node state will impact the client state
|
|
|
3510 |
*/
|
|
|
3511 |
MDI_DEBUG(2, (CE_NOTE, NULL, "!i_mdi_pi_offline ct = %p pip = %p",
|
|
|
3512 |
ct, pip));
|
|
|
3513 |
return (rv);
|
|
|
3514 |
}
|
|
|
3515 |
|
|
|
3516 |
|
|
|
3517 |
/*
|
|
|
3518 |
* mdi_pi_get_addr():
|
|
|
3519 |
* Get the unit address associated with a mdi_pathinfo node
|
|
|
3520 |
*
|
|
|
3521 |
* Return Values:
|
|
|
3522 |
* char *
|
|
|
3523 |
*/
|
|
|
3524 |
char *
|
|
|
3525 |
mdi_pi_get_addr(mdi_pathinfo_t *pip)
|
|
|
3526 |
{
|
|
|
3527 |
if (pip == NULL)
|
|
|
3528 |
return (NULL);
|
|
|
3529 |
|
|
82
|
3530 |
return (MDI_PI(pip)->pi_addr);
|
|
0
|
3531 |
}
|
|
|
3532 |
|
|
|
3533 |
/*
|
|
|
3534 |
* mdi_pi_get_client():
|
|
|
3535 |
* Get the client devinfo associated with a mdi_pathinfo node
|
|
|
3536 |
*
|
|
|
3537 |
* Return Values:
|
|
|
3538 |
* Handle to client device dev_info node
|
|
|
3539 |
*/
|
|
|
3540 |
dev_info_t *
|
|
|
3541 |
mdi_pi_get_client(mdi_pathinfo_t *pip)
|
|
|
3542 |
{
|
|
|
3543 |
dev_info_t *dip = NULL;
|
|
|
3544 |
if (pip) {
|
|
|
3545 |
dip = MDI_PI(pip)->pi_client->ct_dip;
|
|
|
3546 |
}
|
|
|
3547 |
return (dip);
|
|
|
3548 |
}
|
|
|
3549 |
|
|
|
3550 |
/*
|
|
|
3551 |
* mdi_pi_get_phci():
|
|
|
3552 |
* Get the pHCI devinfo associated with the mdi_pathinfo node
|
|
|
3553 |
* Return Values:
|
|
|
3554 |
* Handle to dev_info node
|
|
|
3555 |
*/
|
|
|
3556 |
dev_info_t *
|
|
|
3557 |
mdi_pi_get_phci(mdi_pathinfo_t *pip)
|
|
|
3558 |
{
|
|
|
3559 |
dev_info_t *dip = NULL;
|
|
|
3560 |
if (pip) {
|
|
|
3561 |
dip = MDI_PI(pip)->pi_phci->ph_dip;
|
|
|
3562 |
}
|
|
|
3563 |
return (dip);
|
|
|
3564 |
}
|
|
|
3565 |
|
|
|
3566 |
/*
|
|
|
3567 |
* mdi_pi_get_client_private():
|
|
|
3568 |
* Get the client private information associated with the
|
|
|
3569 |
* mdi_pathinfo node
|
|
|
3570 |
*/
|
|
|
3571 |
void *
|
|
|
3572 |
mdi_pi_get_client_private(mdi_pathinfo_t *pip)
|
|
|
3573 |
{
|
|
|
3574 |
void *cprivate = NULL;
|
|
|
3575 |
if (pip) {
|
|
|
3576 |
cprivate = MDI_PI(pip)->pi_cprivate;
|
|
|
3577 |
}
|
|
|
3578 |
return (cprivate);
|
|
|
3579 |
}
|
|
|
3580 |
|
|
|
3581 |
/*
|
|
|
3582 |
* mdi_pi_set_client_private():
|
|
|
3583 |
* Set the client private information in the mdi_pathinfo node
|
|
|
3584 |
*/
|
|
|
3585 |
void
|
|
|
3586 |
mdi_pi_set_client_private(mdi_pathinfo_t *pip, void *priv)
|
|
|
3587 |
{
|
|
|
3588 |
if (pip) {
|
|
|
3589 |
MDI_PI(pip)->pi_cprivate = priv;
|
|
|
3590 |
}
|
|
|
3591 |
}
|
|
|
3592 |
|
|
|
3593 |
/*
|
|
|
3594 |
* mdi_pi_get_phci_private():
|
|
|
3595 |
* Get the pHCI private information associated with the
|
|
|
3596 |
* mdi_pathinfo node
|
|
|
3597 |
*/
|
|
|
3598 |
caddr_t
|
|
|
3599 |
mdi_pi_get_phci_private(mdi_pathinfo_t *pip)
|
|
|
3600 |
{
|
|
|
3601 |
caddr_t pprivate = NULL;
|
|
|
3602 |
if (pip) {
|
|
|
3603 |
pprivate = MDI_PI(pip)->pi_pprivate;
|
|
|
3604 |
}
|
|
|
3605 |
return (pprivate);
|
|
|
3606 |
}
|
|
|
3607 |
|
|
|
3608 |
/*
|
|
|
3609 |
* mdi_pi_set_phci_private():
|
|
|
3610 |
* Set the pHCI private information in the mdi_pathinfo node
|
|
|
3611 |
*/
|
|
|
3612 |
void
|
|
|
3613 |
mdi_pi_set_phci_private(mdi_pathinfo_t *pip, caddr_t priv)
|
|
|
3614 |
{
|
|
|
3615 |
if (pip) {
|
|
|
3616 |
MDI_PI(pip)->pi_pprivate = priv;
|
|
|
3617 |
}
|
|
|
3618 |
}
|
|
|
3619 |
|
|
|
3620 |
/*
|
|
|
3621 |
* mdi_pi_get_state():
|
|
|
3622 |
* Get the mdi_pathinfo node state. Transient states are internal
|
|
|
3623 |
* and not provided to the users
|
|
|
3624 |
*/
|
|
|
3625 |
mdi_pathinfo_state_t
|
|
|
3626 |
mdi_pi_get_state(mdi_pathinfo_t *pip)
|
|
|
3627 |
{
|
|
|
3628 |
mdi_pathinfo_state_t state = MDI_PATHINFO_STATE_INIT;
|
|
|
3629 |
|
|
|
3630 |
if (pip) {
|
|
|
3631 |
if (MDI_PI_IS_TRANSIENT(pip)) {
|
|
|
3632 |
/*
|
|
|
3633 |
* mdi_pathinfo is in state transition. Return the
|
|
|
3634 |
* last good state.
|
|
|
3635 |
*/
|
|
|
3636 |
state = MDI_PI_OLD_STATE(pip);
|
|
|
3637 |
} else {
|
|
|
3638 |
state = MDI_PI_STATE(pip);
|
|
|
3639 |
}
|
|
|
3640 |
}
|
|
|
3641 |
return (state);
|
|
|
3642 |
}
|
|
|
3643 |
|
|
|
3644 |
/*
|
|
|
3645 |
* Note that the following function needs to be the new interface for
|
|
|
3646 |
* mdi_pi_get_state when mpxio gets integrated to ON.
|
|
|
3647 |
*/
|
|
|
3648 |
int
|
|
|
3649 |
mdi_pi_get_state2(mdi_pathinfo_t *pip, mdi_pathinfo_state_t *state,
|
|
|
3650 |
uint32_t *ext_state)
|
|
|
3651 |
{
|
|
|
3652 |
*state = MDI_PATHINFO_STATE_INIT;
|
|
|
3653 |
|
|
|
3654 |
if (pip) {
|
|
|
3655 |
if (MDI_PI_IS_TRANSIENT(pip)) {
|
|
|
3656 |
/*
|
|
|
3657 |
* mdi_pathinfo is in state transition. Return the
|
|
|
3658 |
* last good state.
|
|
|
3659 |
*/
|
|
|
3660 |
*state = MDI_PI_OLD_STATE(pip);
|
|
|
3661 |
*ext_state = MDI_PI_OLD_EXT_STATE(pip);
|
|
|
3662 |
} else {
|
|
|
3663 |
*state = MDI_PI_STATE(pip);
|
|
|
3664 |
*ext_state = MDI_PI_EXT_STATE(pip);
|
|
|
3665 |
}
|
|
|
3666 |
}
|
|
|
3667 |
return (MDI_SUCCESS);
|
|
|
3668 |
}
|
|
|
3669 |
|
|
|
3670 |
/*
|
|
|
3671 |
* mdi_pi_get_preferred:
|
|
|
3672 |
* Get the preferred path flag
|
|
|
3673 |
*/
|
|
|
3674 |
int
|
|
|
3675 |
mdi_pi_get_preferred(mdi_pathinfo_t *pip)
|
|
|
3676 |
{
|
|
|
3677 |
if (pip) {
|
|
|
3678 |
return (MDI_PI(pip)->pi_preferred);
|
|
|
3679 |
}
|
|
|
3680 |
return (0);
|
|
|
3681 |
}
|
|
|
3682 |
|
|
|
3683 |
/*
|
|
|
3684 |
* mdi_pi_set_preferred:
|
|
|
3685 |
* Set the preferred path flag
|
|
|
3686 |
*/
|
|
|
3687 |
void
|
|
|
3688 |
mdi_pi_set_preferred(mdi_pathinfo_t *pip, int preferred)
|
|
|
3689 |
{
|
|
|
3690 |
if (pip) {
|
|
|
3691 |
MDI_PI(pip)->pi_preferred = preferred;
|
|
|
3692 |
}
|
|
|
3693 |
}
|
|
|
3694 |
|
|
|
3695 |
|
|
|
3696 |
/*
|
|
|
3697 |
* mdi_pi_set_state():
|
|
|
3698 |
* Set the mdi_pathinfo node state
|
|
|
3699 |
*/
|
|
|
3700 |
void
|
|
|
3701 |
mdi_pi_set_state(mdi_pathinfo_t *pip, mdi_pathinfo_state_t state)
|
|
|
3702 |
{
|
|
|
3703 |
uint32_t ext_state;
|
|
|
3704 |
|
|
|
3705 |
if (pip) {
|
|
|
3706 |
ext_state = MDI_PI(pip)->pi_state & MDI_PATHINFO_EXT_STATE_MASK;
|
|
|
3707 |
MDI_PI(pip)->pi_state = state;
|
|
|
3708 |
MDI_PI(pip)->pi_state |= ext_state;
|
|
|
3709 |
}
|
|
|
3710 |
}
|
|
|
3711 |
|
|
|
3712 |
/*
|
|
|
3713 |
* Property functions:
|
|
|
3714 |
*/
|
|
|
3715 |
|
|
|
3716 |
int
|
|
|
3717 |
i_map_nvlist_error_to_mdi(int val)
|
|
|
3718 |
{
|
|
|
3719 |
int rv;
|
|
|
3720 |
|
|
|
3721 |
switch (val) {
|
|
|
3722 |
case 0:
|
|
|
3723 |
rv = DDI_PROP_SUCCESS;
|
|
|
3724 |
break;
|
|
|
3725 |
case EINVAL:
|
|
|
3726 |
case ENOTSUP:
|
|
|
3727 |
rv = DDI_PROP_INVAL_ARG;
|
|
|
3728 |
break;
|
|
|
3729 |
case ENOMEM:
|
|
|
3730 |
rv = DDI_PROP_NO_MEMORY;
|
|
|
3731 |
break;
|
|
|
3732 |
default:
|
|
|
3733 |
rv = DDI_PROP_NOT_FOUND;
|
|
|
3734 |
break;
|
|
|
3735 |
}
|
|
|
3736 |
return (rv);
|
|
|
3737 |
}
|
|
|
3738 |
|
|
|
3739 |
/*
|
|
|
3740 |
* mdi_pi_get_next_prop():
|
|
|
3741 |
* Property walk function. The caller should hold mdi_pi_lock()
|
|
|
3742 |
* and release by calling mdi_pi_unlock() at the end of walk to
|
|
|
3743 |
* get a consistent value.
|
|
|
3744 |
*/
|
|
|
3745 |
|
|
|
3746 |
nvpair_t *
|
|
|
3747 |
mdi_pi_get_next_prop(mdi_pathinfo_t *pip, nvpair_t *prev)
|
|
|
3748 |
{
|
|
|
3749 |
if ((pip == NULL) || (MDI_PI(pip)->pi_prop == NULL)) {
|
|
|
3750 |
return (NULL);
|
|
|
3751 |
}
|
|
|
3752 |
ASSERT(MUTEX_HELD(&MDI_PI(pip)->pi_mutex));
|
|
|
3753 |
return (nvlist_next_nvpair(MDI_PI(pip)->pi_prop, prev));
|
|
|
3754 |
}
|
|
|
3755 |
|
|
|
3756 |
/*
|
|
|
3757 |
* mdi_prop_remove():
|
|
|
3758 |
* Remove the named property from the named list.
|
|
|
3759 |
*/
|
|
|
3760 |
|
|
|
3761 |
int
|
|
|
3762 |
mdi_prop_remove(mdi_pathinfo_t *pip, char *name)
|
|
|
3763 |
{
|
|
|
3764 |
if (pip == NULL) {
|
|
|
3765 |
return (DDI_PROP_NOT_FOUND);
|
|
|
3766 |
}
|
|
|
3767 |
ASSERT(!MUTEX_HELD(&MDI_PI(pip)->pi_mutex));
|
|
|
3768 |
MDI_PI_LOCK(pip);
|
|
|
3769 |
if (MDI_PI(pip)->pi_prop == NULL) {
|
|
|
3770 |
MDI_PI_UNLOCK(pip);
|
|
|
3771 |
return (DDI_PROP_NOT_FOUND);
|
|
|
3772 |
}
|
|
|
3773 |
if (name) {
|
|
|
3774 |
(void) nvlist_remove_all(MDI_PI(pip)->pi_prop, name);
|
|
|
3775 |
} else {
|
|
|
3776 |
char nvp_name[MAXNAMELEN];
|
|
|
3777 |
nvpair_t *nvp;
|
|
|
3778 |
nvp = nvlist_next_nvpair(MDI_PI(pip)->pi_prop, NULL);
|
|
|
3779 |
while (nvp) {
|
|
|
3780 |
nvpair_t *next;
|
|
|
3781 |
next = nvlist_next_nvpair(MDI_PI(pip)->pi_prop, nvp);
|
|
|
3782 |
(void) snprintf(nvp_name, MAXNAMELEN, "%s",
|
|
|
3783 |
nvpair_name(nvp));
|
|
|
3784 |
(void) nvlist_remove_all(MDI_PI(pip)->pi_prop,
|
|
|
3785 |
nvp_name);
|
|
|
3786 |
nvp = next;
|
|
|
3787 |
}
|
|
|
3788 |
}
|
|
|
3789 |
MDI_PI_UNLOCK(pip);
|
|
|
3790 |
return (DDI_PROP_SUCCESS);
|
|
|
3791 |
}
|
|
|
3792 |
|
|
|
3793 |
/*
|
|
|
3794 |
* mdi_prop_size():
|
|
|
3795 |
* Get buffer size needed to pack the property data.
|
|
|
3796 |
* Caller should hold the mdi_pathinfo_t lock to get a consistent
|
|
|
3797 |
* buffer size.
|
|
|
3798 |
*/
|
|
|
3799 |
|
|
|
3800 |
int
|
|
|
3801 |
mdi_prop_size(mdi_pathinfo_t *pip, size_t *buflenp)
|
|
|
3802 |
{
|
|
|
3803 |
int rv;
|
|
|
3804 |
size_t bufsize;
|
|
|
3805 |
|
|
|
3806 |
*buflenp = 0;
|
|
|
3807 |
if ((pip == NULL) || (MDI_PI(pip)->pi_prop == NULL)) {
|
|
|
3808 |
return (DDI_PROP_NOT_FOUND);
|
|
|
3809 |
}
|
|
|
3810 |
ASSERT(MUTEX_HELD(&MDI_PI(pip)->pi_mutex));
|
|
|
3811 |
rv = nvlist_size(MDI_PI(pip)->pi_prop,
|
|
|
3812 |
&bufsize, NV_ENCODE_NATIVE);
|
|
|
3813 |
*buflenp = bufsize;
|
|
|
3814 |
return (i_map_nvlist_error_to_mdi(rv));
|
|
|
3815 |
}
|
|
|
3816 |
|
|
|
3817 |
/*
|
|
|
3818 |
* mdi_prop_pack():
|
|
|
3819 |
* pack the property list. The caller should hold the
|
|
|
3820 |
* mdi_pathinfo_t node to get a consistent data
|
|
|
3821 |
*/
|
|
|
3822 |
|
|
|
3823 |
int
|
|
|
3824 |
mdi_prop_pack(mdi_pathinfo_t *pip, char **bufp, uint_t buflen)
|
|
|
3825 |
{
|
|
|
3826 |
int rv;
|
|
|
3827 |
size_t bufsize;
|
|
|
3828 |
|
|
|
3829 |
if ((pip == NULL) || MDI_PI(pip)->pi_prop == NULL) {
|
|
|
3830 |
return (DDI_PROP_NOT_FOUND);
|
|
|
3831 |
}
|
|
|
3832 |
|
|
|
3833 |
ASSERT(MUTEX_HELD(&MDI_PI(pip)->pi_mutex));
|
|
|
3834 |
|
|
|
3835 |
bufsize = buflen;
|
|
|
3836 |
rv = nvlist_pack(MDI_PI(pip)->pi_prop, bufp, (size_t *)&bufsize,
|
|
|
3837 |
NV_ENCODE_NATIVE, KM_SLEEP);
|
|
|
3838 |
|
|
|
3839 |
return (i_map_nvlist_error_to_mdi(rv));
|
|
|
3840 |
}
|
|
|
3841 |
|
|
|
3842 |
/*
|
|
|
3843 |
* mdi_prop_update_byte():
|
|
|
3844 |
* Create/Update a byte property
|
|
|
3845 |
*/
|
|
|
3846 |
int
|
|
|
3847 |
mdi_prop_update_byte(mdi_pathinfo_t *pip, char *name, uchar_t data)
|
|
|
3848 |
{
|
|
|
3849 |
int rv;
|
|
|
3850 |
|
|
|
3851 |
if (pip == NULL) {
|
|
|
3852 |
return (DDI_PROP_INVAL_ARG);
|
|
|
3853 |
}
|
|
|
3854 |
ASSERT(!MUTEX_HELD(&MDI_PI(pip)->pi_mutex));
|
|
|
3855 |
MDI_PI_LOCK(pip);
|
|
|
3856 |
if (MDI_PI(pip)->pi_prop == NULL) {
|
|
|
3857 |
MDI_PI_UNLOCK(pip);
|
|
|
3858 |
return (DDI_PROP_NOT_FOUND);
|
|
|
3859 |
}
|
|
|
3860 |
rv = nvlist_add_byte(MDI_PI(pip)->pi_prop, name, data);
|
|
|
3861 |
MDI_PI_UNLOCK(pip);
|
|
|
3862 |
return (i_map_nvlist_error_to_mdi(rv));
|
|
|
3863 |
}
|
|
|
3864 |
|
|
|
3865 |
/*
|
|
|
3866 |
* mdi_prop_update_byte_array():
|
|
|
3867 |
* Create/Update a byte array property
|
|
|
3868 |
*/
|
|
|
3869 |
int
|
|
|
3870 |
mdi_prop_update_byte_array(mdi_pathinfo_t *pip, char *name, uchar_t *data,
|
|
|
3871 |
uint_t nelements)
|
|
|
3872 |
{
|
|
|
3873 |
int rv;
|
|
|
3874 |
|
|
|
3875 |
if (pip == NULL) {
|
|
|
3876 |
return (DDI_PROP_INVAL_ARG);
|
|
|
3877 |
}
|
|
|
3878 |
ASSERT(!MUTEX_HELD(&MDI_PI(pip)->pi_mutex));
|
|
|
3879 |
MDI_PI_LOCK(pip);
|
|
|
3880 |
if (MDI_PI(pip)->pi_prop == NULL) {
|
|
|
3881 |
MDI_PI_UNLOCK(pip);
|
|
|
3882 |
return (DDI_PROP_NOT_FOUND);
|
|
|
3883 |
}
|
|
|
3884 |
rv = nvlist_add_byte_array(MDI_PI(pip)->pi_prop, name, data, nelements);
|
|
|
3885 |
MDI_PI_UNLOCK(pip);
|
|
|
3886 |
return (i_map_nvlist_error_to_mdi(rv));
|
|
|
3887 |
}
|
|
|
3888 |
|
|
|
3889 |
/*
|
|
|
3890 |
* mdi_prop_update_int():
|
|
|
3891 |
* Create/Update a 32 bit integer property
|
|
|
3892 |
*/
|
|
|
3893 |
int
|
|
|
3894 |
mdi_prop_update_int(mdi_pathinfo_t *pip, char *name, int data)
|
|
|
3895 |
{
|
|
|
3896 |
int rv;
|
|
|
3897 |
|
|
|
3898 |
if (pip == NULL) {
|
|
|
3899 |
return (DDI_PROP_INVAL_ARG);
|
|
|
3900 |
}
|
|
|
3901 |
ASSERT(!MUTEX_HELD(&MDI_PI(pip)->pi_mutex));
|
|
|
3902 |
MDI_PI_LOCK(pip);
|
|
|
3903 |
if (MDI_PI(pip)->pi_prop == NULL) {
|
|
|
3904 |
MDI_PI_UNLOCK(pip);
|
|
|
3905 |
return (DDI_PROP_NOT_FOUND);
|
|
|
3906 |
}
|
|
|
3907 |
rv = nvlist_add_int32(MDI_PI(pip)->pi_prop, name, (int32_t)data);
|
|
|
3908 |
MDI_PI_UNLOCK(pip);
|
|
|
3909 |
return (i_map_nvlist_error_to_mdi(rv));
|
|
|
3910 |
}
|
|
|
3911 |
|
|
|
3912 |
/*
|
|
|
3913 |
* mdi_prop_update_int64():
|
|
|
3914 |
* Create/Update a 64 bit integer property
|
|
|
3915 |
*/
|
|
|
3916 |
int
|
|
|
3917 |
mdi_prop_update_int64(mdi_pathinfo_t *pip, char *name, int64_t data)
|
|
|
3918 |
{
|
|
|
3919 |
int rv;
|
|
|
3920 |
|
|
|
3921 |
if (pip == NULL) {
|
|
|
3922 |
return (DDI_PROP_INVAL_ARG);
|
|
|
3923 |
}
|
|
|
3924 |
ASSERT(!MUTEX_HELD(&MDI_PI(pip)->pi_mutex));
|
|
|
3925 |
MDI_PI_LOCK(pip);
|
|
|
3926 |
if (MDI_PI(pip)->pi_prop == NULL) {
|
|
|
3927 |
MDI_PI_UNLOCK(pip);
|
|
|
3928 |
return (DDI_PROP_NOT_FOUND);
|
|
|
3929 |
}
|
|
|
3930 |
rv = nvlist_add_int64(MDI_PI(pip)->pi_prop, name, data);
|
|
|
3931 |
MDI_PI_UNLOCK(pip);
|
|
|
3932 |
return (i_map_nvlist_error_to_mdi(rv));
|
|
|
3933 |
}
|
|
|
3934 |
|
|
|
3935 |
/*
|
|
|
3936 |
* mdi_prop_update_int_array():
|
|
|
3937 |
* Create/Update a int array property
|
|
|
3938 |
*/
|
|
|
3939 |
int
|
|
|
3940 |
mdi_prop_update_int_array(mdi_pathinfo_t *pip, char *name, int *data,
|
|
|
3941 |
uint_t nelements)
|
|
|
3942 |
{
|
|
|
3943 |
int rv;
|
|
|
3944 |
|
|
|
3945 |
if (pip == NULL) {
|
|
|
3946 |
return (DDI_PROP_INVAL_ARG);
|
|
|
3947 |
}
|
|
|
3948 |
ASSERT(!MUTEX_HELD(&MDI_PI(pip)->pi_mutex));
|
|
|
3949 |
MDI_PI_LOCK(pip);
|
|
|
3950 |
if (MDI_PI(pip)->pi_prop == NULL) {
|
|
|
3951 |
MDI_PI_UNLOCK(pip);
|
|
|
3952 |
return (DDI_PROP_NOT_FOUND);
|
|
|
3953 |
}
|
|
|
3954 |
rv = nvlist_add_int32_array(MDI_PI(pip)->pi_prop, name, (int32_t *)data,
|
|
|
3955 |
nelements);
|
|
|
3956 |
MDI_PI_UNLOCK(pip);
|
|
|
3957 |
return (i_map_nvlist_error_to_mdi(rv));
|
|
|
3958 |
}
|
|
|
3959 |
|
|
|
3960 |
/*
|
|
|
3961 |
* mdi_prop_update_string():
|
|
|
3962 |
* Create/Update a string property
|
|
|
3963 |
*/
|
|
|
3964 |
int
|
|
|
3965 |
mdi_prop_update_string(mdi_pathinfo_t *pip, char *name, char *data)
|
|
|
3966 |
{
|
|
|
3967 |
int rv;
|
|
|
3968 |
|
|
|
3969 |
if (pip == NULL) {
|
|
|
3970 |
return (DDI_PROP_INVAL_ARG);
|
|
|
3971 |
}
|
|
|
3972 |
ASSERT(!MUTEX_HELD(&MDI_PI(pip)->pi_mutex));
|
|
|
3973 |
MDI_PI_LOCK(pip);
|
|
|
3974 |
if (MDI_PI(pip)->pi_prop == NULL) {
|
|
|
3975 |
MDI_PI_UNLOCK(pip);
|
|
|
3976 |
return (DDI_PROP_NOT_FOUND);
|
|
|
3977 |
}
|
|
|
3978 |
rv = nvlist_add_string(MDI_PI(pip)->pi_prop, name, data);
|
|
|
3979 |
MDI_PI_UNLOCK(pip);
|
|
|
3980 |
return (i_map_nvlist_error_to_mdi(rv));
|
|
|
3981 |
}
|
|
|
3982 |
|
|
|
3983 |
/*
|
|
|
3984 |
* mdi_prop_update_string_array():
|
|
|
3985 |
* Create/Update a string array property
|
|
|
3986 |
*/
|
|
|
3987 |
int
|
|
|
3988 |
mdi_prop_update_string_array(mdi_pathinfo_t *pip, char *name, char **data,
|
|
|
3989 |
uint_t nelements)
|
|
|
3990 |
{
|
|
|
3991 |
int rv;
|
|
|
3992 |
|
|
|
3993 |
if (pip == NULL) {
|
|
|
3994 |
return (DDI_PROP_INVAL_ARG);
|
|
|
3995 |
}
|
|
|
3996 |
ASSERT(!MUTEX_HELD(&MDI_PI(pip)->pi_mutex));
|
|
|
3997 |
MDI_PI_LOCK(pip);
|
|
|
3998 |
if (MDI_PI(pip)->pi_prop == NULL) {
|
|
|
3999 |
MDI_PI_UNLOCK(pip);
|
|
|
4000 |
return (DDI_PROP_NOT_FOUND);
|
|
|
4001 |
}
|
|
|
4002 |
rv = nvlist_add_string_array(MDI_PI(pip)->pi_prop, name, data,
|
|
|
4003 |
nelements);
|
|
|
4004 |
MDI_PI_UNLOCK(pip);
|
|
|
4005 |
return (i_map_nvlist_error_to_mdi(rv));
|
|
|
4006 |
}
|
|
|
4007 |
|
|
|
4008 |
/*
|
|
|
4009 |
* mdi_prop_lookup_byte():
|
|
|
4010 |
* Look for byte property identified by name. The data returned
|
|
|
4011 |
* is the actual property and valid as long as mdi_pathinfo_t node
|
|
|
4012 |
* is alive.
|
|
|
4013 |
*/
|
|
|
4014 |
int
|
|
|
4015 |
mdi_prop_lookup_byte(mdi_pathinfo_t *pip, char *name, uchar_t *data)
|
|
|
4016 |
{
|
|
|
4017 |
int rv;
|
|
|
4018 |
|
|
|
4019 |
if ((pip == NULL) || (MDI_PI(pip)->pi_prop == NULL)) {
|
|
|
4020 |
return (DDI_PROP_NOT_FOUND);
|
|
|
4021 |
}
|
|
|
4022 |
rv = nvlist_lookup_byte(MDI_PI(pip)->pi_prop, name, data);
|
|
|
4023 |
return (i_map_nvlist_error_to_mdi(rv));
|
|
|
4024 |
}
|
|
|
4025 |
|
|
|
4026 |
|
|
|
4027 |
/*
|
|
|
4028 |
* mdi_prop_lookup_byte_array():
|
|
|
4029 |
* Look for byte array property identified by name. The data
|
|
|
4030 |
* returned is the actual property and valid as long as
|
|
|
4031 |
* mdi_pathinfo_t node is alive.
|
|
|
4032 |
*/
|
|
|
4033 |
int
|
|
|
4034 |
mdi_prop_lookup_byte_array(mdi_pathinfo_t *pip, char *name, uchar_t **data,
|
|
|
4035 |
uint_t *nelements)
|
|
|
4036 |
{
|
|
|
4037 |
int rv;
|
|
|
4038 |
|
|
|
4039 |
if ((pip == NULL) || (MDI_PI(pip)->pi_prop == NULL)) {
|
|
|
4040 |
return (DDI_PROP_NOT_FOUND);
|
|
|
4041 |
}
|
|
|
4042 |
rv = nvlist_lookup_byte_array(MDI_PI(pip)->pi_prop, name, data,
|
|
|
4043 |
nelements);
|
|
|
4044 |
return (i_map_nvlist_error_to_mdi(rv));
|
|
|
4045 |
}
|
|
|
4046 |
|
|
|
4047 |
/*
|
|
|
4048 |
* mdi_prop_lookup_int():
|
|
|
4049 |
* Look for int property identified by name. The data returned
|
|
|
4050 |
* is the actual property and valid as long as mdi_pathinfo_t
|
|
|
4051 |
* node is alive.
|
|
|
4052 |
*/
|
|
|
4053 |
int
|
|
|
4054 |
mdi_prop_lookup_int(mdi_pathinfo_t *pip, char *name, int *data)
|
|
|
4055 |
{
|
|
|
4056 |
int rv;
|
|
|
4057 |
|
|
|
4058 |
if ((pip == NULL) || (MDI_PI(pip)->pi_prop == NULL)) {
|
|
|
4059 |
return (DDI_PROP_NOT_FOUND);
|
|
|
4060 |
}
|
|
|
4061 |
rv = nvlist_lookup_int32(MDI_PI(pip)->pi_prop, name, (int32_t *)data);
|
|
|
4062 |
return (i_map_nvlist_error_to_mdi(rv));
|
|
|
4063 |
}
|
|
|
4064 |
|
|
|
4065 |
/*
|
|
|
4066 |
* mdi_prop_lookup_int64():
|
|
|
4067 |
* Look for int64 property identified by name. The data returned
|
|
|
4068 |
* is the actual property and valid as long as mdi_pathinfo_t node
|
|
|
4069 |
* is alive.
|
|
|
4070 |
*/
|
|
|
4071 |
int
|
|
|
4072 |
mdi_prop_lookup_int64(mdi_pathinfo_t *pip, char *name, int64_t *data)
|
|
|
4073 |
{
|
|
|
4074 |
int rv;
|
|
|
4075 |
if ((pip == NULL) || (MDI_PI(pip)->pi_prop == NULL)) {
|
|
|
4076 |
return (DDI_PROP_NOT_FOUND);
|
|
|
4077 |
}
|
|
|
4078 |
rv = nvlist_lookup_int64(MDI_PI(pip)->pi_prop, name, data);
|
|
|
4079 |
return (i_map_nvlist_error_to_mdi(rv));
|
|
|
4080 |
}
|
|
|
4081 |
|
|
|
4082 |
/*
|
|
|
4083 |
* mdi_prop_lookup_int_array():
|
|
|
4084 |
* Look for int array property identified by name. The data
|
|
|
4085 |
* returned is the actual property and valid as long as
|
|
|
4086 |
* mdi_pathinfo_t node is alive.
|
|
|
4087 |
*/
|
|
|
4088 |
int
|
|
|
4089 |
mdi_prop_lookup_int_array(mdi_pathinfo_t *pip, char *name, int **data,
|
|
|
4090 |
uint_t *nelements)
|
|
|
4091 |
{
|
|
|
4092 |
int rv;
|
|
|
4093 |
|
|
|
4094 |
if ((pip == NULL) || (MDI_PI(pip)->pi_prop == NULL)) {
|
|
|
4095 |
return (DDI_PROP_NOT_FOUND);
|
|
|
4096 |
}
|
|
|
4097 |
rv = nvlist_lookup_int32_array(MDI_PI(pip)->pi_prop, name,
|
|
|
4098 |
(int32_t **)data, nelements);
|
|
|
4099 |
return (i_map_nvlist_error_to_mdi(rv));
|
|
|
4100 |
}
|
|
|
4101 |
|
|
|
4102 |
/*
|
|
|
4103 |
* mdi_prop_lookup_string():
|
|
|
4104 |
* Look for string property identified by name. The data
|
|
|
4105 |
* returned is the actual property and valid as long as
|
|
|
4106 |
* mdi_pathinfo_t node is alive.
|
|
|
4107 |
*/
|
|
|
4108 |
int
|
|
|
4109 |
mdi_prop_lookup_string(mdi_pathinfo_t *pip, char *name, char **data)
|
|
|
4110 |
{
|
|
|
4111 |
int rv;
|
|
|
4112 |
|
|
|
4113 |
if ((pip == NULL) || (MDI_PI(pip)->pi_prop == NULL)) {
|
|
|
4114 |
return (DDI_PROP_NOT_FOUND);
|
|
|
4115 |
}
|
|
|
4116 |
rv = nvlist_lookup_string(MDI_PI(pip)->pi_prop, name, data);
|
|
|
4117 |
return (i_map_nvlist_error_to_mdi(rv));
|
|
|
4118 |
}
|
|
|
4119 |
|
|
|
4120 |
/*
|
|
|
4121 |
* mdi_prop_lookup_string_array():
|
|
|
4122 |
* Look for string array property identified by name. The data
|
|
|
4123 |
* returned is the actual property and valid as long as
|
|
|
4124 |
* mdi_pathinfo_t node is alive.
|
|
|
4125 |
*/
|
|
|
4126 |
|
|
|
4127 |
int
|
|
|
4128 |
mdi_prop_lookup_string_array(mdi_pathinfo_t *pip, char *name, char ***data,
|
|
|
4129 |
uint_t *nelements)
|
|
|
4130 |
{
|
|
|
4131 |
int rv;
|
|
|
4132 |
|
|
|
4133 |
if ((pip == NULL) || (MDI_PI(pip)->pi_prop == NULL)) {
|
|
|
4134 |
return (DDI_PROP_NOT_FOUND);
|
|
|
4135 |
}
|
|
|
4136 |
rv = nvlist_lookup_string_array(MDI_PI(pip)->pi_prop, name, data,
|
|
|
4137 |
nelements);
|
|
|
4138 |
return (i_map_nvlist_error_to_mdi(rv));
|
|
|
4139 |
}
|
|
|
4140 |
|
|
|
4141 |
/*
|
|
|
4142 |
* mdi_prop_free():
|
|
|
4143 |
* Symmetrical function to ddi_prop_free(). nvlist_lookup_xx()
|
|
|
4144 |
* functions return the pointer to actual property data and not a
|
|
|
4145 |
* copy of it. So the data returned is valid as long as
|
|
|
4146 |
* mdi_pathinfo_t node is valid.
|
|
|
4147 |
*/
|
|
|
4148 |
|
|
|
4149 |
/*ARGSUSED*/
|
|
|
4150 |
int
|
|
|
4151 |
mdi_prop_free(void *data)
|
|
|
4152 |
{
|
|
|
4153 |
return (DDI_PROP_SUCCESS);
|
|
|
4154 |
}
|
|
|
4155 |
|
|
|
4156 |
/*ARGSUSED*/
|
|
|
4157 |
static void
|
|
|
4158 |
i_mdi_report_path_state(mdi_client_t *ct, mdi_pathinfo_t *pip)
|
|
|
4159 |
{
|
|
|
4160 |
char *phci_path, *ct_path;
|
|
|
4161 |
char *ct_status;
|
|
|
4162 |
char *status;
|
|
|
4163 |
dev_info_t *dip = ct->ct_dip;
|
|
|
4164 |
char lb_buf[64];
|
|
|
4165 |
|
|
|
4166 |
ASSERT(MUTEX_HELD(&ct->ct_mutex));
|
|
|
4167 |
if ((dip == NULL) || (ddi_get_instance(dip) == -1) ||
|
|
|
4168 |
(MDI_CLIENT_IS_REPORT_DEV_NEEDED(ct) == 0)) {
|
|
|
4169 |
return;
|
|
|
4170 |
}
|
|
|
4171 |
if (MDI_CLIENT_STATE(ct) == MDI_CLIENT_STATE_OPTIMAL) {
|
|
|
4172 |
ct_status = "optimal";
|
|
|
4173 |
} else if (MDI_CLIENT_STATE(ct) == MDI_CLIENT_STATE_DEGRADED) {
|
|
|
4174 |
ct_status = "degraded";
|
|
|
4175 |
} else if (MDI_CLIENT_STATE(ct) == MDI_CLIENT_STATE_FAILED) {
|
|
|
4176 |
ct_status = "failed";
|
|
|
4177 |
} else {
|
|
|
4178 |
ct_status = "unknown";
|
|
|
4179 |
}
|
|
|
4180 |
|
|
|
4181 |
if (MDI_PI_IS_OFFLINE(pip)) {
|
|
|
4182 |
status = "offline";
|
|
|
4183 |
} else if (MDI_PI_IS_ONLINE(pip)) {
|
|
|
4184 |
status = "online";
|
|
|
4185 |
} else if (MDI_PI_IS_STANDBY(pip)) {
|
|
|
4186 |
status = "standby";
|
|
|
4187 |
} else if (MDI_PI_IS_FAULT(pip)) {
|
|
|
4188 |
status = "faulted";
|
|
|
4189 |
} else {
|
|
|
4190 |
status = "unknown";
|
|
|
4191 |
}
|
|
|
4192 |
|
|
|
4193 |
if (ct->ct_lb == LOAD_BALANCE_LBA) {
|
|
|
4194 |
(void) snprintf(lb_buf, sizeof (lb_buf),
|
|
|
4195 |
"%s, region-size: %d", mdi_load_balance_lba,
|
|
|
4196 |
ct->ct_lb_args->region_size);
|
|
|
4197 |
} else if (ct->ct_lb == LOAD_BALANCE_NONE) {
|
|
|
4198 |
(void) snprintf(lb_buf, sizeof (lb_buf),
|
|
|
4199 |
"%s", mdi_load_balance_none);
|
|
|
4200 |
} else {
|
|
|
4201 |
(void) snprintf(lb_buf, sizeof (lb_buf), "%s",
|
|
|
4202 |
mdi_load_balance_rr);
|
|
|
4203 |
}
|
|
|
4204 |
|
|
|
4205 |
if (dip) {
|
|
|
4206 |
ct_path = kmem_alloc(MAXPATHLEN, KM_SLEEP);
|
|
|
4207 |
phci_path = kmem_alloc(MAXPATHLEN, KM_SLEEP);
|
|
|
4208 |
cmn_err(CE_CONT, "?%s (%s%d) multipath status: %s, "
|
|
|
4209 |
"path %s (%s%d) to target address: %s is %s"
|
|
|
4210 |
" Load balancing: %s\n",
|
|
|
4211 |
ddi_pathname(dip, ct_path), ddi_driver_name(dip),
|
|
|
4212 |
ddi_get_instance(dip), ct_status,
|
|
|
4213 |
ddi_pathname(MDI_PI(pip)->pi_phci->ph_dip, phci_path),
|
|
|
4214 |
ddi_driver_name(MDI_PI(pip)->pi_phci->ph_dip),
|
|
|
4215 |
ddi_get_instance(MDI_PI(pip)->pi_phci->ph_dip),
|
|
|
4216 |
MDI_PI(pip)->pi_addr, status, lb_buf);
|
|
|
4217 |
kmem_free(phci_path, MAXPATHLEN);
|
|
|
4218 |
kmem_free(ct_path, MAXPATHLEN);
|
|
|
4219 |
MDI_CLIENT_CLEAR_REPORT_DEV_NEEDED(ct);
|
|
|
4220 |
}
|
|
|
4221 |
}
|
|
|
4222 |
|
|
|
4223 |
#ifdef DEBUG
|
|
|
4224 |
/*
|
|
|
4225 |
* i_mdi_log():
|
|
|
4226 |
* Utility function for error message management
|
|
|
4227 |
*
|
|
|
4228 |
*/
|
|
|
4229 |
|
|
|
4230 |
/*VARARGS3*/
|
|
|
4231 |
static void
|
|
|
4232 |
i_mdi_log(int level, dev_info_t *dip, const char *fmt, ...)
|
|
|
4233 |
{
|
|
|
4234 |
char buf[MAXNAMELEN];
|
|
|
4235 |
char name[MAXNAMELEN];
|
|
|
4236 |
va_list ap;
|
|
|
4237 |
int log_only = 0;
|
|
|
4238 |
int boot_only = 0;
|
|
|
4239 |
int console_only = 0;
|
|
|
4240 |
|
|
|
4241 |
if (dip) {
|
|
|
4242 |
if (level == CE_PANIC || level == CE_WARN || level == CE_NOTE) {
|
|
|
4243 |
(void) snprintf(name, MAXNAMELEN, "%s%d:\n",
|
|
|
4244 |
ddi_node_name(dip), ddi_get_instance(dip));
|
|
|
4245 |
} else {
|
|
|
4246 |
(void) snprintf(name, MAXNAMELEN, "%s%d:",
|
|
|
4247 |
ddi_node_name(dip), ddi_get_instance(dip));
|
|
|
4248 |
}
|
|
|
4249 |
} else {
|
|
|
4250 |
name[0] = '\0';
|
|
|
4251 |
}
|
|
|
4252 |
|
|
|
4253 |
va_start(ap, fmt);
|
|
|
4254 |
(void) vsnprintf(buf, MAXNAMELEN, fmt, ap);
|
|
|
4255 |
va_end(ap);
|
|
|
4256 |
|
|
|
4257 |
switch (buf[0]) {
|
|
|
4258 |
case '!':
|
|
|
4259 |
log_only = 1;
|
|
|
4260 |
break;
|
|
|
4261 |
case '?':
|
|
|
4262 |
boot_only = 1;
|
|
|
4263 |
break;
|
|
|
4264 |
case '^':
|
|
|
4265 |
console_only = 1;
|
|
|
4266 |
break;
|
|
|
4267 |
}
|
|
|
4268 |
|
|
|
4269 |
switch (level) {
|
|
|
4270 |
case CE_NOTE:
|
|
|
4271 |
level = CE_CONT;
|
|
|
4272 |
/* FALLTHROUGH */
|
|
|
4273 |
case CE_CONT:
|
|
|
4274 |
case CE_WARN:
|
|
|
4275 |
case CE_PANIC:
|
|
|
4276 |
if (boot_only) {
|
|
|
4277 |
cmn_err(level, "?%s\t%s", name, &buf[1]);
|
|
|
4278 |
} else if (console_only) {
|
|
|
4279 |
cmn_err(level, "^%s\t%s", name, &buf[1]);
|
|
|
4280 |
} else if (log_only) {
|
|
|
4281 |
cmn_err(level, "!%s\t%s", name, &buf[1]);
|
|
|
4282 |
} else {
|
|
|
4283 |
cmn_err(level, "%s\t%s", name, buf);
|
|
|
4284 |
}
|
|
|
4285 |
break;
|
|
|
4286 |
default:
|
|
|
4287 |
cmn_err(level, "%s\t%s", name, buf);
|
|
|
4288 |
break;
|
|
|
4289 |
}
|
|
|
4290 |
}
|
|
|
4291 |
#endif /* DEBUG */
|
|
|
4292 |
|
|
|
4293 |
void
|
|
|
4294 |
i_mdi_client_online(dev_info_t *ct_dip)
|
|
|
4295 |
{
|
|
|
4296 |
mdi_client_t *ct;
|
|
|
4297 |
|
|
|
4298 |
/*
|
|
|
4299 |
* Client online notification. Mark client state as online
|
|
|
4300 |
* restore our binding with dev_info node
|
|
|
4301 |
*/
|
|
|
4302 |
ct = i_devi_get_client(ct_dip);
|
|
|
4303 |
ASSERT(ct != NULL);
|
|
|
4304 |
MDI_CLIENT_LOCK(ct);
|
|
|
4305 |
MDI_CLIENT_SET_ONLINE(ct);
|
|
|
4306 |
/* catch for any memory leaks */
|
|
|
4307 |
ASSERT((ct->ct_dip == NULL) || (ct->ct_dip == ct_dip));
|
|
|
4308 |
ct->ct_dip = ct_dip;
|
|
|
4309 |
|
|
|
4310 |
if (ct->ct_power_cnt == 0)
|
|
|
4311 |
(void) i_mdi_power_all_phci(ct);
|
|
|
4312 |
|
|
|
4313 |
MDI_DEBUG(4, (CE_NOTE, ct_dip, "i_mdi_client_online "
|
|
|
4314 |
"i_mdi_pm_hold_client\n"));
|
|
|
4315 |
i_mdi_pm_hold_client(ct, 1);
|
|
|
4316 |
|
|
|
4317 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
4318 |
}
|
|
|
4319 |
|
|
|
4320 |
void
|
|
|
4321 |
i_mdi_phci_online(dev_info_t *ph_dip)
|
|
|
4322 |
{
|
|
|
4323 |
mdi_phci_t *ph;
|
|
|
4324 |
|
|
|
4325 |
/* pHCI online notification. Mark state accordingly */
|
|
|
4326 |
ph = i_devi_get_phci(ph_dip);
|
|
|
4327 |
ASSERT(ph != NULL);
|
|
|
4328 |
MDI_PHCI_LOCK(ph);
|
|
|
4329 |
MDI_PHCI_SET_ONLINE(ph);
|
|
|
4330 |
MDI_PHCI_UNLOCK(ph);
|
|
|
4331 |
}
|
|
|
4332 |
|
|
|
4333 |
/*
|
|
|
4334 |
* mdi_devi_online():
|
|
|
4335 |
* Online notification from NDI framework on pHCI/client
|
|
|
4336 |
* device online.
|
|
|
4337 |
* Return Values:
|
|
|
4338 |
* NDI_SUCCESS
|
|
|
4339 |
* MDI_FAILURE
|
|
|
4340 |
*/
|
|
|
4341 |
|
|
|
4342 |
/*ARGSUSED*/
|
|
|
4343 |
int
|
|
|
4344 |
mdi_devi_online(dev_info_t *dip, uint_t flags)
|
|
|
4345 |
{
|
|
|
4346 |
if (MDI_PHCI(dip)) {
|
|
|
4347 |
i_mdi_phci_online(dip);
|
|
|
4348 |
}
|
|
|
4349 |
|
|
|
4350 |
if (MDI_CLIENT(dip)) {
|
|
|
4351 |
i_mdi_client_online(dip);
|
|
|
4352 |
}
|
|
|
4353 |
return (NDI_SUCCESS);
|
|
|
4354 |
}
|
|
|
4355 |
|
|
|
4356 |
/*
|
|
|
4357 |
* mdi_devi_offline():
|
|
|
4358 |
* Offline notification from NDI framework on pHCI/Client device
|
|
|
4359 |
* offline.
|
|
|
4360 |
*
|
|
|
4361 |
* Return Values:
|
|
|
4362 |
* NDI_SUCCESS
|
|
|
4363 |
* NDI_FAILURE
|
|
|
4364 |
*/
|
|
|
4365 |
|
|
|
4366 |
/*ARGSUSED*/
|
|
|
4367 |
int
|
|
|
4368 |
mdi_devi_offline(dev_info_t *dip, uint_t flags)
|
|
|
4369 |
{
|
|
|
4370 |
int rv = NDI_SUCCESS;
|
|
|
4371 |
|
|
|
4372 |
if (MDI_CLIENT(dip)) {
|
|
|
4373 |
rv = i_mdi_client_offline(dip, flags);
|
|
|
4374 |
if (rv != NDI_SUCCESS)
|
|
|
4375 |
return (rv);
|
|
|
4376 |
}
|
|
|
4377 |
|
|
|
4378 |
if (MDI_PHCI(dip)) {
|
|
|
4379 |
rv = i_mdi_phci_offline(dip, flags);
|
|
|
4380 |
if ((rv != NDI_SUCCESS) && MDI_CLIENT(dip)) {
|
|
|
4381 |
/* set client back online */
|
|
|
4382 |
i_mdi_client_online(dip);
|
|
|
4383 |
}
|
|
|
4384 |
}
|
|
|
4385 |
|
|
|
4386 |
return (rv);
|
|
|
4387 |
}
|
|
|
4388 |
|
|
|
4389 |
/*ARGSUSED*/
|
|
|
4390 |
static int
|
|
|
4391 |
i_mdi_phci_offline(dev_info_t *dip, uint_t flags)
|
|
|
4392 |
{
|
|
|
4393 |
int rv = NDI_SUCCESS;
|
|
|
4394 |
mdi_phci_t *ph;
|
|
|
4395 |
mdi_client_t *ct;
|
|
|
4396 |
mdi_pathinfo_t *pip;
|
|
|
4397 |
mdi_pathinfo_t *next;
|
|
|
4398 |
mdi_pathinfo_t *failed_pip = NULL;
|
|
|
4399 |
dev_info_t *cdip;
|
|
|
4400 |
|
|
|
4401 |
/*
|
|
|
4402 |
* pHCI component offline notification
|
|
|
4403 |
* Make sure that this pHCI instance is free to be offlined.
|
|
|
4404 |
* If it is OK to proceed, Offline and remove all the child
|
|
|
4405 |
* mdi_pathinfo nodes. This process automatically offlines
|
|
|
4406 |
* corresponding client devices, for which this pHCI provides
|
|
|
4407 |
* critical services.
|
|
|
4408 |
*/
|
|
|
4409 |
MDI_DEBUG(2, (CE_NOTE, dip, "!mdi_phci_offline called %p\n",
|
|
|
4410 |
dip));
|
|
|
4411 |
|
|
|
4412 |
ph = i_devi_get_phci(dip);
|
|
|
4413 |
if (ph == NULL) {
|
|
|
4414 |
return (rv);
|
|
|
4415 |
}
|
|
|
4416 |
|
|
|
4417 |
MDI_PHCI_LOCK(ph);
|
|
|
4418 |
|
|
|
4419 |
if (MDI_PHCI_IS_OFFLINE(ph)) {
|
|
|
4420 |
MDI_DEBUG(1, (CE_WARN, dip, "!pHCI %p already offlined", ph));
|
|
|
4421 |
MDI_PHCI_UNLOCK(ph);
|
|
|
4422 |
return (NDI_SUCCESS);
|
|
|
4423 |
}
|
|
|
4424 |
|
|
|
4425 |
/*
|
|
|
4426 |
* Check to see if the pHCI can be offlined
|
|
|
4427 |
*/
|
|
|
4428 |
if (ph->ph_unstable) {
|
|
|
4429 |
MDI_DEBUG(1, (CE_WARN, dip,
|
|
|
4430 |
"!One or more target devices are in transient "
|
|
|
4431 |
"state. This device can not be removed at "
|
|
|
4432 |
"this moment. Please try again later."));
|
|
|
4433 |
MDI_PHCI_UNLOCK(ph);
|
|
|
4434 |
return (NDI_BUSY);
|
|
|
4435 |
}
|
|
|
4436 |
|
|
|
4437 |
pip = ph->ph_path_head;
|
|
|
4438 |
while (pip != NULL) {
|
|
|
4439 |
MDI_PI_LOCK(pip);
|
|
|
4440 |
next = (mdi_pathinfo_t *)MDI_PI(pip)->pi_phci_link;
|
|
|
4441 |
/*
|
|
|
4442 |
* The mdi_pathinfo state is OK. Check the client state.
|
|
|
4443 |
* If failover in progress fail the pHCI from offlining
|
|
|
4444 |
*/
|
|
|
4445 |
ct = MDI_PI(pip)->pi_client;
|
|
|
4446 |
i_mdi_client_lock(ct, pip);
|
|
|
4447 |
if ((MDI_CLIENT_IS_FAILOVER_IN_PROGRESS(ct)) ||
|
|
|
4448 |
(ct->ct_unstable)) {
|
|
|
4449 |
/*
|
|
|
4450 |
* Failover is in progress, Fail the DR
|
|
|
4451 |
*/
|
|
|
4452 |
MDI_DEBUG(1, (CE_WARN, dip,
|
|
|
4453 |
"!pHCI device (%s%d) is Busy. %s",
|
|
|
4454 |
ddi_driver_name(dip), ddi_get_instance(dip),
|
|
|
4455 |
"This device can not be removed at "
|
|
|
4456 |
"this moment. Please try again later."));
|
|
|
4457 |
MDI_PI_UNLOCK(pip);
|
|
|
4458 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
4459 |
MDI_PHCI_UNLOCK(ph);
|
|
|
4460 |
return (NDI_BUSY);
|
|
|
4461 |
}
|
|
|
4462 |
MDI_PI_UNLOCK(pip);
|
|
|
4463 |
|
|
|
4464 |
/*
|
|
|
4465 |
* Check to see of we are removing the last path of this
|
|
|
4466 |
* client device...
|
|
|
4467 |
*/
|
|
|
4468 |
cdip = ct->ct_dip;
|
|
|
4469 |
if (cdip && (i_ddi_node_state(cdip) >= DS_INITIALIZED) &&
|
|
|
4470 |
(i_mdi_client_compute_state(ct, ph) ==
|
|
|
4471 |
MDI_CLIENT_STATE_FAILED)) {
|
|
|
4472 |
i_mdi_client_unlock(ct);
|
|
|
4473 |
MDI_PHCI_UNLOCK(ph);
|
|
|
4474 |
if (ndi_devi_offline(cdip, 0) != NDI_SUCCESS) {
|
|
|
4475 |
/*
|
|
|
4476 |
* ndi_devi_offline() failed.
|
|
|
4477 |
* This pHCI provides the critical path
|
|
|
4478 |
* to one or more client devices.
|
|
|
4479 |
* Return busy.
|
|
|
4480 |
*/
|
|
|
4481 |
MDI_PHCI_LOCK(ph);
|
|
|
4482 |
MDI_DEBUG(1, (CE_WARN, dip,
|
|
|
4483 |
"!pHCI device (%s%d) is Busy. %s",
|
|
|
4484 |
ddi_driver_name(dip), ddi_get_instance(dip),
|
|
|
4485 |
"This device can not be removed at "
|
|
|
4486 |
"this moment. Please try again later."));
|
|
|
4487 |
failed_pip = pip;
|
|
|
4488 |
break;
|
|
|
4489 |
} else {
|
|
|
4490 |
MDI_PHCI_LOCK(ph);
|
|
|
4491 |
pip = next;
|
|
|
4492 |
}
|
|
|
4493 |
} else {
|
|
|
4494 |
i_mdi_client_unlock(ct);
|
|
|
4495 |
pip = next;
|
|
|
4496 |
}
|
|
|
4497 |
}
|
|
|
4498 |
|
|
|
4499 |
if (failed_pip) {
|
|
|
4500 |
pip = ph->ph_path_head;
|
|
|
4501 |
while (pip != failed_pip) {
|
|
|
4502 |
MDI_PI_LOCK(pip);
|
|
|
4503 |
next = (mdi_pathinfo_t *)MDI_PI(pip)->pi_phci_link;
|
|
|
4504 |
ct = MDI_PI(pip)->pi_client;
|
|
|
4505 |
i_mdi_client_lock(ct, pip);
|
|
|
4506 |
cdip = ct->ct_dip;
|
|
|
4507 |
switch (MDI_CLIENT_STATE(ct)) {
|
|
|
4508 |
case MDI_CLIENT_STATE_OPTIMAL:
|
|
|
4509 |
case MDI_CLIENT_STATE_DEGRADED:
|
|
|
4510 |
if (cdip) {
|
|
|
4511 |
MDI_PI_UNLOCK(pip);
|
|
|
4512 |
i_mdi_client_unlock(ct);
|
|
|
4513 |
MDI_PHCI_UNLOCK(ph);
|
|
|
4514 |
(void) ndi_devi_online(cdip, 0);
|
|
|
4515 |
MDI_PHCI_LOCK(ph);
|
|
|
4516 |
pip = next;
|
|
|
4517 |
continue;
|
|
|
4518 |
}
|
|
|
4519 |
break;
|
|
|
4520 |
|
|
|
4521 |
case MDI_CLIENT_STATE_FAILED:
|
|
|
4522 |
if (cdip) {
|
|
|
4523 |
MDI_PI_UNLOCK(pip);
|
|
|
4524 |
i_mdi_client_unlock(ct);
|
|
|
4525 |
MDI_PHCI_UNLOCK(ph);
|
|
|
4526 |
(void) ndi_devi_offline(cdip, 0);
|
|
|
4527 |
MDI_PHCI_LOCK(ph);
|
|
|
4528 |
pip = next;
|
|
|
4529 |
continue;
|
|
|
4530 |
}
|
|
|
4531 |
break;
|
|
|
4532 |
}
|
|
|
4533 |
MDI_PI_UNLOCK(pip);
|
|
|
4534 |
i_mdi_client_unlock(ct);
|
|
|
4535 |
pip = next;
|
|
|
4536 |
}
|
|
|
4537 |
MDI_PHCI_UNLOCK(ph);
|
|
|
4538 |
return (NDI_BUSY);
|
|
|
4539 |
}
|
|
|
4540 |
|
|
|
4541 |
/*
|
|
|
4542 |
* Mark the pHCI as offline
|
|
|
4543 |
*/
|
|
|
4544 |
MDI_PHCI_SET_OFFLINE(ph);
|
|
|
4545 |
|
|
|
4546 |
/*
|
|
|
4547 |
* Mark the child mdi_pathinfo nodes as transient
|
|
|
4548 |
*/
|
|
|
4549 |
pip = ph->ph_path_head;
|
|
|
4550 |
while (pip != NULL) {
|
|
|
4551 |
MDI_PI_LOCK(pip);
|
|
|
4552 |
next = (mdi_pathinfo_t *)MDI_PI(pip)->pi_phci_link;
|
|
|
4553 |
MDI_PI_SET_OFFLINING(pip);
|
|
|
4554 |
MDI_PI_UNLOCK(pip);
|
|
|
4555 |
pip = next;
|
|
|
4556 |
}
|
|
|
4557 |
MDI_PHCI_UNLOCK(ph);
|
|
|
4558 |
/*
|
|
|
4559 |
* Give a chance for any pending commands to execute
|
|
|
4560 |
*/
|
|
|
4561 |
delay(1);
|
|
|
4562 |
MDI_PHCI_LOCK(ph);
|
|
|
4563 |
pip = ph->ph_path_head;
|
|
|
4564 |
while (pip != NULL) {
|
|
|
4565 |
next = (mdi_pathinfo_t *)MDI_PI(pip)->pi_phci_link;
|
|
|
4566 |
(void) i_mdi_pi_offline(pip, flags);
|
|
|
4567 |
MDI_PI_LOCK(pip);
|
|
|
4568 |
ct = MDI_PI(pip)->pi_client;
|
|
|
4569 |
if (!MDI_PI_IS_OFFLINE(pip)) {
|
|
|
4570 |
MDI_DEBUG(1, (CE_WARN, dip,
|
|
|
4571 |
"!pHCI device (%s%d) is Busy. %s",
|
|
|
4572 |
ddi_driver_name(dip), ddi_get_instance(dip),
|
|
|
4573 |
"This device can not be removed at "
|
|
|
4574 |
"this moment. Please try again later."));
|
|
|
4575 |
MDI_PI_UNLOCK(pip);
|
|
|
4576 |
MDI_PHCI_SET_ONLINE(ph);
|
|
|
4577 |
MDI_PHCI_UNLOCK(ph);
|
|
|
4578 |
return (NDI_BUSY);
|
|
|
4579 |
}
|
|
|
4580 |
MDI_PI_UNLOCK(pip);
|
|
|
4581 |
pip = next;
|
|
|
4582 |
}
|
|
|
4583 |
MDI_PHCI_UNLOCK(ph);
|
|
|
4584 |
|
|
|
4585 |
return (rv);
|
|
|
4586 |
}
|
|
|
4587 |
|
|
|
4588 |
/*ARGSUSED*/
|
|
|
4589 |
static int
|
|
|
4590 |
i_mdi_client_offline(dev_info_t *dip, uint_t flags)
|
|
|
4591 |
{
|
|
|
4592 |
int rv = NDI_SUCCESS;
|
|
|
4593 |
mdi_client_t *ct;
|
|
|
4594 |
|
|
|
4595 |
/*
|
|
|
4596 |
* Client component to go offline. Make sure that we are
|
|
|
4597 |
* not in failing over state and update client state
|
|
|
4598 |
* accordingly
|
|
|
4599 |
*/
|
|
|
4600 |
MDI_DEBUG(2, (CE_NOTE, dip, "!i_mdi_client_offline called %p\n",
|
|
|
4601 |
dip));
|
|
|
4602 |
ct = i_devi_get_client(dip);
|
|
|
4603 |
if (ct != NULL) {
|
|
|
4604 |
MDI_CLIENT_LOCK(ct);
|
|
|
4605 |
if (ct->ct_unstable) {
|
|
|
4606 |
/*
|
|
|
4607 |
* One or more paths are in transient state,
|
|
|
4608 |
* Dont allow offline of a client device
|
|
|
4609 |
*/
|
|
|
4610 |
MDI_DEBUG(1, (CE_WARN, dip,
|
|
|
4611 |
"!One or more paths to this device is "
|
|
|
4612 |
"in transient state. This device can not "
|
|
|
4613 |
"be removed at this moment. "
|
|
|
4614 |
"Please try again later."));
|
|
|
4615 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
4616 |
return (NDI_BUSY);
|
|
|
4617 |
}
|
|
|
4618 |
if (MDI_CLIENT_IS_FAILOVER_IN_PROGRESS(ct)) {
|
|
|
4619 |
/*
|
|
|
4620 |
* Failover is in progress, Dont allow DR of
|
|
|
4621 |
* a client device
|
|
|
4622 |
*/
|
|
|
4623 |
MDI_DEBUG(1, (CE_WARN, dip,
|
|
|
4624 |
"!Client device (%s%d) is Busy. %s",
|
|
|
4625 |
ddi_driver_name(dip), ddi_get_instance(dip),
|
|
|
4626 |
"This device can not be removed at "
|
|
|
4627 |
"this moment. Please try again later."));
|
|
|
4628 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
4629 |
return (NDI_BUSY);
|
|
|
4630 |
}
|
|
|
4631 |
MDI_CLIENT_SET_OFFLINE(ct);
|
|
|
4632 |
|
|
|
4633 |
/*
|
|
|
4634 |
* Unbind our relationship with the dev_info node
|
|
|
4635 |
*/
|
|
|
4636 |
if (flags & NDI_DEVI_REMOVE) {
|
|
|
4637 |
ct->ct_dip = NULL;
|
|
|
4638 |
}
|
|
|
4639 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
4640 |
}
|
|
|
4641 |
return (rv);
|
|
|
4642 |
}
|
|
|
4643 |
|
|
|
4644 |
/*
|
|
|
4645 |
* mdi_pre_attach():
|
|
|
4646 |
* Pre attach() notification handler
|
|
|
4647 |
*/
|
|
|
4648 |
|
|
|
4649 |
/*ARGSUSED*/
|
|
|
4650 |
int
|
|
|
4651 |
mdi_pre_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
|
|
|
4652 |
{
|
|
|
4653 |
/* don't support old DDI_PM_RESUME */
|
|
|
4654 |
if ((DEVI(dip)->devi_mdi_component != MDI_COMPONENT_NONE) &&
|
|
|
4655 |
(cmd == DDI_PM_RESUME))
|
|
|
4656 |
return (DDI_FAILURE);
|
|
|
4657 |
|
|
|
4658 |
return (DDI_SUCCESS);
|
|
|
4659 |
}
|
|
|
4660 |
|
|
|
4661 |
/*
|
|
|
4662 |
* mdi_post_attach():
|
|
|
4663 |
* Post attach() notification handler
|
|
|
4664 |
*/
|
|
|
4665 |
|
|
|
4666 |
/*ARGSUSED*/
|
|
|
4667 |
void
|
|
|
4668 |
mdi_post_attach(dev_info_t *dip, ddi_attach_cmd_t cmd, int error)
|
|
|
4669 |
{
|
|
|
4670 |
mdi_phci_t *ph;
|
|
|
4671 |
mdi_client_t *ct;
|
|
|
4672 |
mdi_pathinfo_t *pip;
|
|
|
4673 |
|
|
|
4674 |
if (MDI_PHCI(dip)) {
|
|
|
4675 |
ph = i_devi_get_phci(dip);
|
|
|
4676 |
ASSERT(ph != NULL);
|
|
|
4677 |
|
|
|
4678 |
MDI_PHCI_LOCK(ph);
|
|
|
4679 |
switch (cmd) {
|
|
|
4680 |
case DDI_ATTACH:
|
|
|
4681 |
MDI_DEBUG(2, (CE_NOTE, dip,
|
|
|
4682 |
"!pHCI post_attach: called %p\n", ph));
|
|
|
4683 |
if (error == DDI_SUCCESS) {
|
|
|
4684 |
MDI_PHCI_SET_ATTACH(ph);
|
|
|
4685 |
} else {
|
|
|
4686 |
MDI_DEBUG(1, (CE_NOTE, dip,
|
|
|
4687 |
"!pHCI post_attach: failed error=%d\n",
|
|
|
4688 |
error));
|
|
|
4689 |
MDI_PHCI_SET_DETACH(ph);
|
|
|
4690 |
}
|
|
|
4691 |
break;
|
|
|
4692 |
|
|
|
4693 |
case DDI_RESUME:
|
|
|
4694 |
MDI_DEBUG(2, (CE_NOTE, dip,
|
|
|
4695 |
"!pHCI post_resume: called %p\n", ph));
|
|
|
4696 |
if (error == DDI_SUCCESS) {
|
|
|
4697 |
MDI_PHCI_SET_RESUME(ph);
|
|
|
4698 |
} else {
|
|
|
4699 |
MDI_DEBUG(1, (CE_NOTE, dip,
|
|
|
4700 |
"!pHCI post_resume: failed error=%d\n",
|
|
|
4701 |
error));
|
|
|
4702 |
MDI_PHCI_SET_SUSPEND(ph);
|
|
|
4703 |
}
|
|
|
4704 |
break;
|
|
|
4705 |
}
|
|
|
4706 |
MDI_PHCI_UNLOCK(ph);
|
|
|
4707 |
}
|
|
|
4708 |
|
|
|
4709 |
if (MDI_CLIENT(dip)) {
|
|
|
4710 |
ct = i_devi_get_client(dip);
|
|
|
4711 |
ASSERT(ct != NULL);
|
|
|
4712 |
|
|
|
4713 |
MDI_CLIENT_LOCK(ct);
|
|
|
4714 |
switch (cmd) {
|
|
|
4715 |
case DDI_ATTACH:
|
|
|
4716 |
MDI_DEBUG(2, (CE_NOTE, dip,
|
|
|
4717 |
"!Client post_attach: called %p\n", ct));
|
|
|
4718 |
if (error != DDI_SUCCESS) {
|
|
|
4719 |
MDI_DEBUG(1, (CE_NOTE, dip,
|
|
|
4720 |
"!Client post_attach: failed error=%d\n",
|
|
|
4721 |
error));
|
|
|
4722 |
MDI_CLIENT_SET_DETACH(ct);
|
|
|
4723 |
MDI_DEBUG(4, (CE_WARN, dip,
|
|
|
4724 |
"mdi_post_attach i_mdi_pm_reset_client\n"));
|
|
|
4725 |
i_mdi_pm_reset_client(ct);
|
|
|
4726 |
break;
|
|
|
4727 |
}
|
|
|
4728 |
|
|
|
4729 |
/*
|
|
|
4730 |
* Client device has successfully attached.
|
|
|
4731 |
* Create kstats for any pathinfo structures
|
|
|
4732 |
* initially associated with this client.
|
|
|
4733 |
*/
|
|
|
4734 |
for (pip = ct->ct_path_head; pip != NULL;
|
|
|
4735 |
pip = (mdi_pathinfo_t *)
|
|
|
4736 |
MDI_PI(pip)->pi_client_link) {
|
|
|
4737 |
(void) i_mdi_pi_kstat_create(pip);
|
|
|
4738 |
i_mdi_report_path_state(ct, pip);
|
|
|
4739 |
}
|
|
|
4740 |
MDI_CLIENT_SET_ATTACH(ct);
|
|
|
4741 |
break;
|
|
|
4742 |
|
|
|
4743 |
case DDI_RESUME:
|
|
|
4744 |
MDI_DEBUG(2, (CE_NOTE, dip,
|
|
|
4745 |
"!Client post_attach: called %p\n", ct));
|
|
|
4746 |
if (error == DDI_SUCCESS) {
|
|
|
4747 |
MDI_CLIENT_SET_RESUME(ct);
|
|
|
4748 |
} else {
|
|
|
4749 |
MDI_DEBUG(1, (CE_NOTE, dip,
|
|
|
4750 |
"!Client post_resume: failed error=%d\n",
|
|
|
4751 |
error));
|
|
|
4752 |
MDI_CLIENT_SET_SUSPEND(ct);
|
|
|
4753 |
}
|
|
|
4754 |
break;
|
|
|
4755 |
}
|
|
|
4756 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
4757 |
}
|
|
|
4758 |
}
|
|
|
4759 |
|
|
|
4760 |
/*
|
|
|
4761 |
* mdi_pre_detach():
|
|
|
4762 |
* Pre detach notification handler
|
|
|
4763 |
*/
|
|
|
4764 |
|
|
|
4765 |
/*ARGSUSED*/
|
|
|
4766 |
int
|
|
|
4767 |
mdi_pre_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
|
|
|
4768 |
{
|
|
|
4769 |
int rv = DDI_SUCCESS;
|
|
|
4770 |
|
|
|
4771 |
if (MDI_CLIENT(dip)) {
|
|
|
4772 |
(void) i_mdi_client_pre_detach(dip, cmd);
|
|
|
4773 |
}
|
|
|
4774 |
|
|
|
4775 |
if (MDI_PHCI(dip)) {
|
|
|
4776 |
rv = i_mdi_phci_pre_detach(dip, cmd);
|
|
|
4777 |
}
|
|
|
4778 |
|
|
|
4779 |
return (rv);
|
|
|
4780 |
}
|
|
|
4781 |
|
|
|
4782 |
/*ARGSUSED*/
|
|
|
4783 |
static int
|
|
|
4784 |
i_mdi_phci_pre_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
|
|
|
4785 |
{
|
|
|
4786 |
int rv = DDI_SUCCESS;
|
|
|
4787 |
mdi_phci_t *ph;
|
|
|
4788 |
mdi_client_t *ct;
|
|
|
4789 |
mdi_pathinfo_t *pip;
|
|
|
4790 |
mdi_pathinfo_t *failed_pip = NULL;
|
|
|
4791 |
mdi_pathinfo_t *next;
|
|
|
4792 |
|
|
|
4793 |
ph = i_devi_get_phci(dip);
|
|
|
4794 |
if (ph == NULL) {
|
|
|
4795 |
return (rv);
|
|
|
4796 |
}
|
|
|
4797 |
|
|
|
4798 |
MDI_PHCI_LOCK(ph);
|
|
|
4799 |
switch (cmd) {
|
|
|
4800 |
case DDI_DETACH:
|
|
|
4801 |
MDI_DEBUG(2, (CE_NOTE, dip,
|
|
|
4802 |
"!pHCI pre_detach: called %p\n", ph));
|
|
|
4803 |
if (!MDI_PHCI_IS_OFFLINE(ph)) {
|
|
|
4804 |
/*
|
|
|
4805 |
* mdi_pathinfo nodes are still attached to
|
|
|
4806 |
* this pHCI. Fail the detach for this pHCI.
|
|
|
4807 |
*/
|
|
|
4808 |
MDI_DEBUG(2, (CE_WARN, dip,
|
|
|
4809 |
"!pHCI pre_detach: "
|
|
|
4810 |
"mdi_pathinfo nodes are still attached "
|
|
|
4811 |
"%p\n", ph));
|
|
|
4812 |
rv = DDI_FAILURE;
|
|
|
4813 |
break;
|
|
|
4814 |
}
|
|
|
4815 |
MDI_PHCI_SET_DETACH(ph);
|
|
|
4816 |
break;
|
|
|
4817 |
|
|
|
4818 |
case DDI_SUSPEND:
|
|
|
4819 |
/*
|
|
|
4820 |
* pHCI is getting suspended. Since mpxio client
|
|
|
4821 |
* devices may not be suspended at this point, to avoid
|
|
|
4822 |
* a potential stack overflow, it is important to suspend
|
|
|
4823 |
* client devices before pHCI can be suspended.
|
|
|
4824 |
*/
|
|
|
4825 |
|
|
|
4826 |
MDI_DEBUG(2, (CE_NOTE, dip,
|
|
|
4827 |
"!pHCI pre_suspend: called %p\n", ph));
|
|
|
4828 |
/*
|
|
|
4829 |
* Suspend all the client devices accessible through this pHCI
|
|
|
4830 |
*/
|
|
|
4831 |
pip = ph->ph_path_head;
|
|
|
4832 |
while (pip != NULL && rv == DDI_SUCCESS) {
|
|
|
4833 |
dev_info_t *cdip;
|
|
|
4834 |
MDI_PI_LOCK(pip);
|
|
|
4835 |
next =
|
|
|
4836 |
(mdi_pathinfo_t *)MDI_PI(pip)->pi_phci_link;
|
|
|
4837 |
ct = MDI_PI(pip)->pi_client;
|
|
|
4838 |
i_mdi_client_lock(ct, pip);
|
|
|
4839 |
cdip = ct->ct_dip;
|
|
|
4840 |
MDI_PI_UNLOCK(pip);
|
|
|
4841 |
if ((MDI_CLIENT_IS_DETACHED(ct) == 0) &&
|
|
|
4842 |
MDI_CLIENT_IS_SUSPENDED(ct) == 0) {
|
|
|
4843 |
i_mdi_client_unlock(ct);
|
|
|
4844 |
if ((rv = devi_detach(cdip, DDI_SUSPEND)) !=
|
|
|
4845 |
DDI_SUCCESS) {
|
|
|
4846 |
/*
|
|
|
4847 |
* Suspend of one of the client
|
|
|
4848 |
* device has failed.
|
|
|
4849 |
*/
|
|
|
4850 |
MDI_DEBUG(1, (CE_WARN, dip,
|
|
|
4851 |
"!Suspend of device (%s%d) failed.",
|
|
|
4852 |
ddi_driver_name(cdip),
|
|
|
4853 |
ddi_get_instance(cdip)));
|
|
|
4854 |
failed_pip = pip;
|
|
|
4855 |
break;
|
|
|
4856 |
}
|
|
|
4857 |
} else {
|
|
|
4858 |
i_mdi_client_unlock(ct);
|
|
|
4859 |
}
|
|
|
4860 |
pip = next;
|
|
|
4861 |
}
|
|
|
4862 |
|
|
|
4863 |
if (rv == DDI_SUCCESS) {
|
|
|
4864 |
/*
|
|
|
4865 |
* Suspend of client devices is complete. Proceed
|
|
|
4866 |
* with pHCI suspend.
|
|
|
4867 |
*/
|
|
|
4868 |
MDI_PHCI_SET_SUSPEND(ph);
|
|
|
4869 |
} else {
|
|
|
4870 |
/*
|
|
|
4871 |
* Revert back all the suspended client device states
|
|
|
4872 |
* to converse.
|
|
|
4873 |
*/
|
|
|
4874 |
pip = ph->ph_path_head;
|
|
|
4875 |
while (pip != failed_pip) {
|
|
|
4876 |
dev_info_t *cdip;
|
|
|
4877 |
MDI_PI_LOCK(pip);
|
|
|
4878 |
next =
|
|
|
4879 |
(mdi_pathinfo_t *)MDI_PI(pip)->pi_phci_link;
|
|
|
4880 |
ct = MDI_PI(pip)->pi_client;
|
|
|
4881 |
i_mdi_client_lock(ct, pip);
|
|
|
4882 |
cdip = ct->ct_dip;
|
|
|
4883 |
MDI_PI_UNLOCK(pip);
|
|
|
4884 |
if (MDI_CLIENT_IS_SUSPENDED(ct)) {
|
|
|
4885 |
i_mdi_client_unlock(ct);
|
|
|
4886 |
(void) devi_attach(cdip, DDI_RESUME);
|
|
|
4887 |
} else {
|
|
|
4888 |
i_mdi_client_unlock(ct);
|
|
|
4889 |
}
|
|
|
4890 |
pip = next;
|
|
|
4891 |
}
|
|
|
4892 |
}
|
|
|
4893 |
break;
|
|
|
4894 |
|
|
|
4895 |
default:
|
|
|
4896 |
rv = DDI_FAILURE;
|
|
|
4897 |
break;
|
|
|
4898 |
}
|
|
|
4899 |
MDI_PHCI_UNLOCK(ph);
|
|
|
4900 |
return (rv);
|
|
|
4901 |
}
|
|
|
4902 |
|
|
|
4903 |
/*ARGSUSED*/
|
|
|
4904 |
static int
|
|
|
4905 |
i_mdi_client_pre_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
|
|
|
4906 |
{
|
|
|
4907 |
int rv = DDI_SUCCESS;
|
|
|
4908 |
mdi_client_t *ct;
|
|
|
4909 |
|
|
|
4910 |
ct = i_devi_get_client(dip);
|
|
|
4911 |
if (ct == NULL) {
|
|
|
4912 |
return (rv);
|
|
|
4913 |
}
|
|
|
4914 |
|
|
|
4915 |
MDI_CLIENT_LOCK(ct);
|
|
|
4916 |
switch (cmd) {
|
|
|
4917 |
case DDI_DETACH:
|
|
|
4918 |
MDI_DEBUG(2, (CE_NOTE, dip,
|
|
|
4919 |
"!Client pre_detach: called %p\n", ct));
|
|
|
4920 |
MDI_CLIENT_SET_DETACH(ct);
|
|
|
4921 |
break;
|
|
|
4922 |
|
|
|
4923 |
case DDI_SUSPEND:
|
|
|
4924 |
MDI_DEBUG(2, (CE_NOTE, dip,
|
|
|
4925 |
"!Client pre_suspend: called %p\n", ct));
|
|
|
4926 |
MDI_CLIENT_SET_SUSPEND(ct);
|
|
|
4927 |
break;
|
|
|
4928 |
|
|
|
4929 |
default:
|
|
|
4930 |
rv = DDI_FAILURE;
|
|
|
4931 |
break;
|
|
|
4932 |
}
|
|
|
4933 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
4934 |
return (rv);
|
|
|
4935 |
}
|
|
|
4936 |
|
|
|
4937 |
/*
|
|
|
4938 |
* mdi_post_detach():
|
|
|
4939 |
* Post detach notification handler
|
|
|
4940 |
*/
|
|
|
4941 |
|
|
|
4942 |
/*ARGSUSED*/
|
|
|
4943 |
void
|
|
|
4944 |
mdi_post_detach(dev_info_t *dip, ddi_detach_cmd_t cmd, int error)
|
|
|
4945 |
{
|
|
|
4946 |
/*
|
|
|
4947 |
* Detach/Suspend of mpxio component failed. Update our state
|
|
|
4948 |
* too
|
|
|
4949 |
*/
|
|
|
4950 |
if (MDI_PHCI(dip))
|
|
|
4951 |
i_mdi_phci_post_detach(dip, cmd, error);
|
|
|
4952 |
|
|
|
4953 |
if (MDI_CLIENT(dip))
|
|
|
4954 |
i_mdi_client_post_detach(dip, cmd, error);
|
|
|
4955 |
}
|
|
|
4956 |
|
|
|
4957 |
/*ARGSUSED*/
|
|
|
4958 |
static void
|
|
|
4959 |
i_mdi_phci_post_detach(dev_info_t *dip, ddi_detach_cmd_t cmd, int error)
|
|
|
4960 |
{
|
|
|
4961 |
mdi_phci_t *ph;
|
|
|
4962 |
|
|
|
4963 |
/*
|
|
|
4964 |
* Detach/Suspend of phci component failed. Update our state
|
|
|
4965 |
* too
|
|
|
4966 |
*/
|
|
|
4967 |
ph = i_devi_get_phci(dip);
|
|
|
4968 |
if (ph == NULL) {
|
|
|
4969 |
return;
|
|
|
4970 |
}
|
|
|
4971 |
|
|
|
4972 |
MDI_PHCI_LOCK(ph);
|
|
|
4973 |
/*
|
|
|
4974 |
* Detach of pHCI failed. Restore back converse
|
|
|
4975 |
* state
|
|
|
4976 |
*/
|
|
|
4977 |
switch (cmd) {
|
|
|
4978 |
case DDI_DETACH:
|
|
|
4979 |
MDI_DEBUG(2, (CE_NOTE, dip,
|
|
|
4980 |
"!pHCI post_detach: called %p\n", ph));
|
|
|
4981 |
if (error != DDI_SUCCESS)
|
|
|
4982 |
MDI_PHCI_SET_ATTACH(ph);
|
|
|
4983 |
break;
|
|
|
4984 |
|
|
|
4985 |
case DDI_SUSPEND:
|
|
|
4986 |
MDI_DEBUG(2, (CE_NOTE, dip,
|
|
|
4987 |
"!pHCI post_suspend: called %p\n", ph));
|
|
|
4988 |
if (error != DDI_SUCCESS)
|
|
|
4989 |
MDI_PHCI_SET_RESUME(ph);
|
|
|
4990 |
break;
|
|
|
4991 |
}
|
|
|
4992 |
MDI_PHCI_UNLOCK(ph);
|
|
|
4993 |
}
|
|
|
4994 |
|
|
|
4995 |
/*ARGSUSED*/
|
|
|
4996 |
static void
|
|
|
4997 |
i_mdi_client_post_detach(dev_info_t *dip, ddi_detach_cmd_t cmd, int error)
|
|
|
4998 |
{
|
|
|
4999 |
mdi_client_t *ct;
|
|
|
5000 |
|
|
|
5001 |
ct = i_devi_get_client(dip);
|
|
|
5002 |
if (ct == NULL) {
|
|
|
5003 |
return;
|
|
|
5004 |
}
|
|
|
5005 |
MDI_CLIENT_LOCK(ct);
|
|
|
5006 |
/*
|
|
|
5007 |
* Detach of Client failed. Restore back converse
|
|
|
5008 |
* state
|
|
|
5009 |
*/
|
|
|
5010 |
switch (cmd) {
|
|
|
5011 |
case DDI_DETACH:
|
|
|
5012 |
MDI_DEBUG(2, (CE_NOTE, dip,
|
|
|
5013 |
"!Client post_detach: called %p\n", ct));
|
|
|
5014 |
if (DEVI_IS_ATTACHING(ct->ct_dip)) {
|
|
|
5015 |
MDI_DEBUG(4, (CE_NOTE, dip, "i_mdi_client_post_detach "
|
|
|
5016 |
"i_mdi_pm_rele_client\n"));
|
|
|
5017 |
i_mdi_pm_rele_client(ct, ct->ct_path_count);
|
|
|
5018 |
} else {
|
|
|
5019 |
MDI_DEBUG(4, (CE_NOTE, dip, "i_mdi_client_post_detach "
|
|
|
5020 |
"i_mdi_pm_reset_client\n"));
|
|
|
5021 |
i_mdi_pm_reset_client(ct);
|
|
|
5022 |
}
|
|
|
5023 |
if (error != DDI_SUCCESS)
|
|
|
5024 |
MDI_CLIENT_SET_ATTACH(ct);
|
|
|
5025 |
break;
|
|
|
5026 |
|
|
|
5027 |
case DDI_SUSPEND:
|
|
|
5028 |
MDI_DEBUG(2, (CE_NOTE, dip,
|
|
|
5029 |
"!Client post_suspend: called %p\n", ct));
|
|
|
5030 |
if (error != DDI_SUCCESS)
|
|
|
5031 |
MDI_CLIENT_SET_RESUME(ct);
|
|
|
5032 |
break;
|
|
|
5033 |
}
|
|
|
5034 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
5035 |
}
|
|
|
5036 |
|
|
|
5037 |
/*
|
|
|
5038 |
* create and install per-path (client - pHCI) statistics
|
|
|
5039 |
* I/O stats supported: nread, nwritten, reads, and writes
|
|
|
5040 |
* Error stats - hard errors, soft errors, & transport errors
|
|
|
5041 |
*/
|
|
|
5042 |
static int
|
|
|
5043 |
i_mdi_pi_kstat_create(mdi_pathinfo_t *pip)
|
|
|
5044 |
{
|
|
|
5045 |
|
|
|
5046 |
dev_info_t *client = MDI_PI(pip)->pi_client->ct_dip;
|
|
|
5047 |
dev_info_t *ppath = MDI_PI(pip)->pi_phci->ph_dip;
|
|
|
5048 |
char ksname[KSTAT_STRLEN];
|
|
|
5049 |
mdi_pathinfo_t *cpip;
|
|
|
5050 |
const char *err_postfix = ",err";
|
|
|
5051 |
kstat_t *kiosp, *kerrsp;
|
|
|
5052 |
struct pi_errs *nsp;
|
|
|
5053 |
struct mdi_pi_kstats *mdi_statp;
|
|
|
5054 |
|
|
|
5055 |
ASSERT(client != NULL && ppath != NULL);
|
|
|
5056 |
|
|
|
5057 |
ASSERT(mutex_owned(&(MDI_PI(pip)->pi_client->ct_mutex)));
|
|
|
5058 |
|
|
|
5059 |
if (MDI_PI(pip)->pi_kstats != NULL)
|
|
|
5060 |
return (MDI_SUCCESS);
|
|
|
5061 |
|
|
|
5062 |
for (cpip = MDI_PI(pip)->pi_client->ct_path_head; cpip != NULL;
|
|
|
5063 |
cpip = (mdi_pathinfo_t *)(MDI_PI(cpip)->pi_client_link)) {
|
|
|
5064 |
if (cpip == pip)
|
|
|
5065 |
continue;
|
|
|
5066 |
/*
|
|
|
5067 |
* We have found a different path with same parent
|
|
|
5068 |
* kstats for a given client-pHCI are common
|
|
|
5069 |
*/
|
|
|
5070 |
if ((MDI_PI(cpip)->pi_phci->ph_dip == ppath) &&
|
|
|
5071 |
(MDI_PI(cpip)->pi_kstats != NULL)) {
|
|
|
5072 |
MDI_PI(cpip)->pi_kstats->pi_kstat_ref++;
|
|
|
5073 |
MDI_PI(pip)->pi_kstats = MDI_PI(cpip)->pi_kstats;
|
|
|
5074 |
return (MDI_SUCCESS);
|
|
|
5075 |
}
|
|
|
5076 |
}
|
|
|
5077 |
|
|
|
5078 |
/*
|
|
|
5079 |
* stats are named as follows: TGTx.HBAy, e.g. "ssd0.fp0"
|
|
|
5080 |
* clamp length of name against max length of error kstat name
|
|
|
5081 |
*/
|
|
|
5082 |
if (snprintf(ksname, KSTAT_STRLEN, "%s%d.%s%d",
|
|
|
5083 |
ddi_driver_name(client), ddi_get_instance(client),
|
|
|
5084 |
ddi_driver_name(ppath), ddi_get_instance(ppath)) >
|
|
|
5085 |
(KSTAT_STRLEN - strlen(err_postfix))) {
|
|
|
5086 |
return (MDI_FAILURE);
|
|
|
5087 |
}
|
|
|
5088 |
if ((kiosp = kstat_create("mdi", 0, ksname, "iopath",
|
|
|
5089 |
KSTAT_TYPE_IO, 1, 0)) == NULL) {
|
|
|
5090 |
return (MDI_FAILURE);
|
|
|
5091 |
}
|
|
|
5092 |
|
|
|
5093 |
(void) strcat(ksname, err_postfix);
|
|
|
5094 |
kerrsp = kstat_create("mdi", 0, ksname, "iopath_errors",
|
|
|
5095 |
KSTAT_TYPE_NAMED,
|
|
|
5096 |
sizeof (struct pi_errs) / sizeof (kstat_named_t), 0);
|
|
|
5097 |
|
|
|
5098 |
if (kerrsp == NULL) {
|
|
|
5099 |
kstat_delete(kiosp);
|
|
|
5100 |
return (MDI_FAILURE);
|
|
|
5101 |
}
|
|
|
5102 |
|
|
|
5103 |
nsp = (struct pi_errs *)kerrsp->ks_data;
|
|
|
5104 |
kstat_named_init(&nsp->pi_softerrs, "Soft Errors", KSTAT_DATA_UINT32);
|
|
|
5105 |
kstat_named_init(&nsp->pi_harderrs, "Hard Errors", KSTAT_DATA_UINT32);
|
|
|
5106 |
kstat_named_init(&nsp->pi_transerrs, "Transport Errors",
|
|
|
5107 |
KSTAT_DATA_UINT32);
|
|
|
5108 |
kstat_named_init(&nsp->pi_icnt_busy, "Interconnect Busy",
|
|
|
5109 |
KSTAT_DATA_UINT32);
|
|
|
5110 |
kstat_named_init(&nsp->pi_icnt_errors, "Interconnect Errors",
|
|
|
5111 |
KSTAT_DATA_UINT32);
|
|
|
5112 |
kstat_named_init(&nsp->pi_phci_rsrc, "pHCI No Resources",
|
|
|
5113 |
KSTAT_DATA_UINT32);
|
|
|
5114 |
kstat_named_init(&nsp->pi_phci_localerr, "pHCI Local Errors",
|
|
|
5115 |
KSTAT_DATA_UINT32);
|
|
|
5116 |
kstat_named_init(&nsp->pi_phci_invstate, "pHCI Invalid State",
|
|
|
5117 |
KSTAT_DATA_UINT32);
|
|
|
5118 |
kstat_named_init(&nsp->pi_failedfrom, "Failed From",
|
|
|
5119 |
KSTAT_DATA_UINT32);
|
|
|
5120 |
kstat_named_init(&nsp->pi_failedto, "Failed To", KSTAT_DATA_UINT32);
|
|
|
5121 |
|
|
|
5122 |
mdi_statp = kmem_alloc(sizeof (*mdi_statp), KM_SLEEP);
|
|
|
5123 |
mdi_statp->pi_kstat_ref = 1;
|
|
|
5124 |
mdi_statp->pi_kstat_iostats = kiosp;
|
|
|
5125 |
mdi_statp->pi_kstat_errstats = kerrsp;
|
|
|
5126 |
kstat_install(kiosp);
|
|
|
5127 |
kstat_install(kerrsp);
|
|
|
5128 |
MDI_PI(pip)->pi_kstats = mdi_statp;
|
|
|
5129 |
return (MDI_SUCCESS);
|
|
|
5130 |
}
|
|
|
5131 |
|
|
|
5132 |
/*
|
|
|
5133 |
* destroy per-path properties
|
|
|
5134 |
*/
|
|
|
5135 |
static void
|
|
|
5136 |
i_mdi_pi_kstat_destroy(mdi_pathinfo_t *pip)
|
|
|
5137 |
{
|
|
|
5138 |
|
|
|
5139 |
struct mdi_pi_kstats *mdi_statp;
|
|
|
5140 |
|
|
|
5141 |
if ((mdi_statp = MDI_PI(pip)->pi_kstats) == NULL)
|
|
|
5142 |
return;
|
|
|
5143 |
|
|
|
5144 |
MDI_PI(pip)->pi_kstats = NULL;
|
|
|
5145 |
|
|
|
5146 |
/*
|
|
|
5147 |
* the kstat may be shared between multiple pathinfo nodes
|
|
|
5148 |
* decrement this pathinfo's usage, removing the kstats
|
|
|
5149 |
* themselves when the last pathinfo reference is removed.
|
|
|
5150 |
*/
|
|
|
5151 |
ASSERT(mdi_statp->pi_kstat_ref > 0);
|
|
|
5152 |
if (--mdi_statp->pi_kstat_ref != 0)
|
|
|
5153 |
return;
|
|
|
5154 |
|
|
|
5155 |
kstat_delete(mdi_statp->pi_kstat_iostats);
|
|
|
5156 |
kstat_delete(mdi_statp->pi_kstat_errstats);
|
|
|
5157 |
kmem_free(mdi_statp, sizeof (*mdi_statp));
|
|
|
5158 |
}
|
|
|
5159 |
|
|
|
5160 |
/*
|
|
|
5161 |
* update I/O paths KSTATS
|
|
|
5162 |
*/
|
|
|
5163 |
void
|
|
|
5164 |
mdi_pi_kstat_iosupdate(mdi_pathinfo_t *pip, struct buf *bp)
|
|
|
5165 |
{
|
|
|
5166 |
kstat_t *iostatp;
|
|
|
5167 |
size_t xfer_cnt;
|
|
|
5168 |
|
|
|
5169 |
ASSERT(pip != NULL);
|
|
|
5170 |
|
|
|
5171 |
/*
|
|
|
5172 |
* I/O can be driven across a path prior to having path
|
|
|
5173 |
* statistics available, i.e. probe(9e).
|
|
|
5174 |
*/
|
|
|
5175 |
if (bp != NULL && MDI_PI(pip)->pi_kstats != NULL) {
|
|
|
5176 |
iostatp = MDI_PI(pip)->pi_kstats->pi_kstat_iostats;
|
|
|
5177 |
xfer_cnt = bp->b_bcount - bp->b_resid;
|
|
|
5178 |
if (bp->b_flags & B_READ) {
|
|
|
5179 |
KSTAT_IO_PTR(iostatp)->reads++;
|
|
|
5180 |
KSTAT_IO_PTR(iostatp)->nread += xfer_cnt;
|
|
|
5181 |
} else {
|
|
|
5182 |
KSTAT_IO_PTR(iostatp)->writes++;
|
|
|
5183 |
KSTAT_IO_PTR(iostatp)->nwritten += xfer_cnt;
|
|
|
5184 |
}
|
|
|
5185 |
}
|
|
|
5186 |
}
|
|
|
5187 |
|
|
|
5188 |
/*
|
|
|
5189 |
* disable the path to a particular pHCI (pHCI specified in the phci_path
|
|
|
5190 |
* argument) for a particular client (specified in the client_path argument).
|
|
|
5191 |
* Disabling a path means that MPxIO will not select the disabled path for
|
|
|
5192 |
* routing any new I/O requests.
|
|
|
5193 |
*/
|
|
|
5194 |
int
|
|
|
5195 |
mdi_pi_disable(dev_info_t *cdip, dev_info_t *pdip, int flags)
|
|
|
5196 |
{
|
|
|
5197 |
return (i_mdi_pi_enable_disable(cdip, pdip, flags, MDI_DISABLE_OP));
|
|
|
5198 |
}
|
|
|
5199 |
|
|
|
5200 |
/*
|
|
|
5201 |
* Enable the path to a particular pHCI (pHCI specified in the phci_path
|
|
|
5202 |
* argument) for a particular client (specified in the client_path argument).
|
|
|
5203 |
* Enabling a path means that MPxIO may select the enabled path for routing
|
|
|
5204 |
* future I/O requests, subject to other path state constraints.
|
|
|
5205 |
*/
|
|
|
5206 |
|
|
|
5207 |
int
|
|
|
5208 |
mdi_pi_enable(dev_info_t *cdip, dev_info_t *pdip, int flags)
|
|
|
5209 |
{
|
|
|
5210 |
return (i_mdi_pi_enable_disable(cdip, pdip, flags, MDI_ENABLE_OP));
|
|
|
5211 |
}
|
|
|
5212 |
|
|
|
5213 |
|
|
|
5214 |
/*
|
|
|
5215 |
* Common routine for doing enable/disable.
|
|
|
5216 |
*/
|
|
|
5217 |
int
|
|
|
5218 |
i_mdi_pi_enable_disable(dev_info_t *cdip, dev_info_t *pdip, int flags, int op)
|
|
|
5219 |
{
|
|
|
5220 |
|
|
|
5221 |
mdi_phci_t *ph;
|
|
|
5222 |
mdi_vhci_t *vh = NULL;
|
|
|
5223 |
mdi_client_t *ct;
|
|
|
5224 |
mdi_pathinfo_t *next, *pip;
|
|
|
5225 |
int found_it;
|
|
|
5226 |
int (*f)() = NULL;
|
|
|
5227 |
int rv;
|
|
|
5228 |
int sync_flag = 0;
|
|
|
5229 |
|
|
|
5230 |
ph = i_devi_get_phci(pdip);
|
|
|
5231 |
MDI_DEBUG(5, (CE_NOTE, NULL, "!i_mdi_pi_enable_disable:"
|
|
|
5232 |
" Operation = %d pdip = %p cdip = %p\n", op, pdip, cdip));
|
|
|
5233 |
if (ph == NULL) {
|
|
|
5234 |
MDI_DEBUG(1, (CE_NOTE, NULL, "!i_mdi_pi_enable_disable:"
|
|
|
5235 |
" failed. ph = NULL operation = %d\n", op));
|
|
|
5236 |
return (MDI_FAILURE);
|
|
|
5237 |
}
|
|
|
5238 |
|
|
|
5239 |
if ((op != MDI_ENABLE_OP) && (op != MDI_DISABLE_OP)) {
|
|
|
5240 |
MDI_DEBUG(1, (CE_NOTE, NULL, "!i_mdi_pi_enable_disable:"
|
|
|
5241 |
" Invalid operation = %d\n", op));
|
|
|
5242 |
return (MDI_FAILURE);
|
|
|
5243 |
}
|
|
|
5244 |
|
|
|
5245 |
sync_flag = (flags << 8) & 0xf00;
|
|
|
5246 |
|
|
|
5247 |
vh = ph->ph_vhci;
|
|
|
5248 |
f = vh->vh_ops->vo_pi_state_change;
|
|
|
5249 |
|
|
|
5250 |
if (cdip == NULL) {
|
|
|
5251 |
/*
|
|
|
5252 |
* Need to mark the Phci as enabled/disabled.
|
|
|
5253 |
*/
|
|
|
5254 |
MDI_DEBUG(3, (CE_NOTE, NULL, "!i_mdi_pi_enable_disable:"
|
|
|
5255 |
"Operation %d for the phci\n", op));
|
|
|
5256 |
MDI_PHCI_LOCK(ph);
|
|
|
5257 |
switch (flags) {
|
|
|
5258 |
case USER_DISABLE:
|
|
|
5259 |
if (op == MDI_DISABLE_OP)
|
|
|
5260 |
MDI_PHCI_SET_USER_DISABLE(ph);
|
|
|
5261 |
else
|
|
|
5262 |
MDI_PHCI_SET_USER_ENABLE(ph);
|
|
|
5263 |
break;
|
|
|
5264 |
case DRIVER_DISABLE:
|
|
|
5265 |
if (op == MDI_DISABLE_OP)
|
|
|
5266 |
MDI_PHCI_SET_DRV_DISABLE(ph);
|
|
|
5267 |
else
|
|
|
5268 |
MDI_PHCI_SET_DRV_ENABLE(ph);
|
|
|
5269 |
break;
|
|
|
5270 |
case DRIVER_DISABLE_TRANSIENT:
|
|
|
5271 |
if (op == MDI_DISABLE_OP)
|
|
|
5272 |
MDI_PHCI_SET_DRV_DISABLE_TRANSIENT(ph);
|
|
|
5273 |
else
|
|
|
5274 |
MDI_PHCI_SET_DRV_ENABLE_TRANSIENT(ph);
|
|
|
5275 |
break;
|
|
|
5276 |
default:
|
|
|
5277 |
MDI_PHCI_UNLOCK(ph);
|
|
|
5278 |
MDI_DEBUG(1, (CE_NOTE, NULL,
|
|
|
5279 |
"!i_mdi_pi_enable_disable:"
|
|
|
5280 |
" Invalid flag argument= %d\n", flags));
|
|
|
5281 |
}
|
|
|
5282 |
|
|
|
5283 |
/*
|
|
|
5284 |
* Phci has been disabled. Now try to enable/disable
|
|
|
5285 |
* path info's to each client.
|
|
|
5286 |
*/
|
|
|
5287 |
pip = ph->ph_path_head;
|
|
|
5288 |
while (pip != NULL) {
|
|
|
5289 |
/*
|
|
|
5290 |
* Do a callback into the mdi consumer to let it
|
|
|
5291 |
* know that path is about to be enabled/disabled.
|
|
|
5292 |
*/
|
|
|
5293 |
if (f != NULL) {
|
|
|
5294 |
rv = (*f)(vh->vh_dip, pip, 0,
|
|
|
5295 |
MDI_PI_EXT_STATE(pip),
|
|
|
5296 |
MDI_EXT_STATE_CHANGE | sync_flag |
|
|
|
5297 |
op | MDI_BEFORE_STATE_CHANGE);
|
|
|
5298 |
if (rv != MDI_SUCCESS) {
|
|
|
5299 |
MDI_DEBUG(2, (CE_WARN, vh->vh_dip,
|
|
|
5300 |
"!vo_pi_state_change: failed rv = %x", rv));
|
|
|
5301 |
}
|
|
|
5302 |
}
|
|
|
5303 |
|
|
|
5304 |
MDI_PI_LOCK(pip);
|
|
|
5305 |
next =
|
|
|
5306 |
(mdi_pathinfo_t *)MDI_PI(pip)->pi_phci_link;
|
|
|
5307 |
switch (flags) {
|
|
|
5308 |
case USER_DISABLE:
|
|
|
5309 |
if (op == MDI_DISABLE_OP)
|
|
|
5310 |
MDI_PI_SET_USER_DISABLE(pip);
|
|
|
5311 |
else
|
|
|
5312 |
MDI_PI_SET_USER_ENABLE(pip);
|
|
|
5313 |
break;
|
|
|
5314 |
case DRIVER_DISABLE:
|
|
|
5315 |
if (op == MDI_DISABLE_OP)
|
|
|
5316 |
MDI_PI_SET_DRV_DISABLE(pip);
|
|
|
5317 |
else
|
|
|
5318 |
MDI_PI_SET_DRV_ENABLE(pip);
|
|
|
5319 |
break;
|
|
|
5320 |
case DRIVER_DISABLE_TRANSIENT:
|
|
|
5321 |
if (op == MDI_DISABLE_OP && rv == MDI_SUCCESS)
|
|
|
5322 |
MDI_PI_SET_DRV_DISABLE_TRANS(pip);
|
|
|
5323 |
else
|
|
|
5324 |
MDI_PI_SET_DRV_ENABLE_TRANS(pip);
|
|
|
5325 |
break;
|
|
|
5326 |
}
|
|
|
5327 |
MDI_PI_UNLOCK(pip);
|
|
|
5328 |
/*
|
|
|
5329 |
* Do a callback into the mdi consumer to let it
|
|
|
5330 |
* know that path is now enabled/disabled.
|
|
|
5331 |
*/
|
|
|
5332 |
if (f != NULL) {
|
|
|
5333 |
rv = (*f)(vh->vh_dip, pip, 0,
|
|
|
5334 |
MDI_PI_EXT_STATE(pip),
|
|
|
5335 |
MDI_EXT_STATE_CHANGE | sync_flag |
|
|
|
5336 |
op | MDI_AFTER_STATE_CHANGE);
|
|
|
5337 |
if (rv != MDI_SUCCESS) {
|
|
|
5338 |
MDI_DEBUG(2, (CE_WARN, vh->vh_dip,
|
|
|
5339 |
"!vo_pi_state_change: failed rv = %x", rv));
|
|
|
5340 |
}
|
|
|
5341 |
}
|
|
|
5342 |
pip = next;
|
|
|
5343 |
}
|
|
|
5344 |
MDI_PHCI_UNLOCK(ph);
|
|
|
5345 |
} else {
|
|
|
5346 |
|
|
|
5347 |
/*
|
|
|
5348 |
* Disable a specific client.
|
|
|
5349 |
*/
|
|
|
5350 |
ct = i_devi_get_client(cdip);
|
|
|
5351 |
if (ct == NULL) {
|
|
|
5352 |
MDI_DEBUG(1, (CE_NOTE, NULL,
|
|
|
5353 |
"!i_mdi_pi_enable_disable:"
|
|
|
5354 |
" failed. ct = NULL operation = %d\n", op));
|
|
|
5355 |
return (MDI_FAILURE);
|
|
|
5356 |
}
|
|
|
5357 |
|
|
|
5358 |
MDI_CLIENT_LOCK(ct);
|
|
|
5359 |
pip = ct->ct_path_head;
|
|
|
5360 |
found_it = 0;
|
|
|
5361 |
while (pip != NULL) {
|
|
|
5362 |
MDI_PI_LOCK(pip);
|
|
|
5363 |
next = (mdi_pathinfo_t *)MDI_PI(pip)->pi_client_link;
|
|
|
5364 |
if (MDI_PI(pip)->pi_phci == ph) {
|
|
|
5365 |
MDI_PI_UNLOCK(pip);
|
|
|
5366 |
found_it = 1;
|
|
|
5367 |
break;
|
|
|
5368 |
}
|
|
|
5369 |
MDI_PI_UNLOCK(pip);
|
|
|
5370 |
pip = next;
|
|
|
5371 |
}
|
|
|
5372 |
|
|
|
5373 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
5374 |
if (found_it == 0) {
|
|
|
5375 |
MDI_DEBUG(1, (CE_NOTE, NULL,
|
|
|
5376 |
"!i_mdi_pi_enable_disable:"
|
|
|
5377 |
" failed. Could not find corresponding pip\n"));
|
|
|
5378 |
return (MDI_FAILURE);
|
|
|
5379 |
}
|
|
|
5380 |
/*
|
|
|
5381 |
* Do a callback into the mdi consumer to let it
|
|
|
5382 |
* know that path is about to get enabled/disabled.
|
|
|
5383 |
*/
|
|
|
5384 |
if (f != NULL) {
|
|
|
5385 |
rv = (*f)(vh->vh_dip, pip, 0,
|
|
|
5386 |
MDI_PI_EXT_STATE(pip),
|
|
|
5387 |
MDI_EXT_STATE_CHANGE | sync_flag |
|
|
|
5388 |
op | MDI_BEFORE_STATE_CHANGE);
|
|
|
5389 |
if (rv != MDI_SUCCESS) {
|
|
|
5390 |
MDI_DEBUG(2, (CE_WARN, vh->vh_dip,
|
|
|
5391 |
"!vo_pi_state_change: failed rv = %x", rv));
|
|
|
5392 |
}
|
|
|
5393 |
}
|
|
|
5394 |
MDI_PI_LOCK(pip);
|
|
|
5395 |
switch (flags) {
|
|
|
5396 |
case USER_DISABLE:
|
|
|
5397 |
if (op == MDI_DISABLE_OP)
|
|
|
5398 |
MDI_PI_SET_USER_DISABLE(pip);
|
|
|
5399 |
else
|
|
|
5400 |
MDI_PI_SET_USER_ENABLE(pip);
|
|
|
5401 |
break;
|
|
|
5402 |
case DRIVER_DISABLE:
|
|
|
5403 |
if (op == MDI_DISABLE_OP)
|
|
|
5404 |
MDI_PI_SET_DRV_DISABLE(pip);
|
|
|
5405 |
else
|
|
|
5406 |
MDI_PI_SET_DRV_ENABLE(pip);
|
|
|
5407 |
break;
|
|
|
5408 |
case DRIVER_DISABLE_TRANSIENT:
|
|
|
5409 |
if (op == MDI_DISABLE_OP && rv == MDI_SUCCESS)
|
|
|
5410 |
MDI_PI_SET_DRV_DISABLE_TRANS(pip);
|
|
|
5411 |
else
|
|
|
5412 |
MDI_PI_SET_DRV_ENABLE_TRANS(pip);
|
|
|
5413 |
break;
|
|
|
5414 |
}
|
|
|
5415 |
MDI_PI_UNLOCK(pip);
|
|
|
5416 |
/*
|
|
|
5417 |
* Do a callback into the mdi consumer to let it
|
|
|
5418 |
* know that path is now enabled/disabled.
|
|
|
5419 |
*/
|
|
|
5420 |
if (f != NULL) {
|
|
|
5421 |
rv = (*f)(vh->vh_dip, pip, 0,
|
|
|
5422 |
MDI_PI_EXT_STATE(pip),
|
|
|
5423 |
MDI_EXT_STATE_CHANGE | sync_flag |
|
|
|
5424 |
op | MDI_AFTER_STATE_CHANGE);
|
|
|
5425 |
if (rv != MDI_SUCCESS) {
|
|
|
5426 |
MDI_DEBUG(2, (CE_WARN, vh->vh_dip,
|
|
|
5427 |
"!vo_pi_state_change: failed rv = %x", rv));
|
|
|
5428 |
}
|
|
|
5429 |
}
|
|
|
5430 |
}
|
|
|
5431 |
|
|
|
5432 |
MDI_DEBUG(5, (CE_NOTE, NULL, "!i_mdi_pi_enable_disable:"
|
|
|
5433 |
" Returning success pdip = %p cdip = %p\n", op, pdip, cdip));
|
|
|
5434 |
return (MDI_SUCCESS);
|
|
|
5435 |
}
|
|
|
5436 |
|
|
|
5437 |
/*ARGSUSED3*/
|
|
|
5438 |
int
|
|
|
5439 |
mdi_devi_config_one(dev_info_t *pdip, char *devnm, dev_info_t **cdipp,
|
|
|
5440 |
int flags, clock_t timeout)
|
|
|
5441 |
{
|
|
|
5442 |
mdi_pathinfo_t *pip;
|
|
|
5443 |
dev_info_t *dip;
|
|
|
5444 |
clock_t interval = drv_usectohz(100000); /* 0.1 sec */
|
|
|
5445 |
char *paddr;
|
|
|
5446 |
|
|
|
5447 |
MDI_DEBUG(2, (CE_NOTE, NULL, "configure device %s", devnm));
|
|
|
5448 |
|
|
|
5449 |
if (!MDI_PHCI(pdip))
|
|
|
5450 |
return (MDI_FAILURE);
|
|
|
5451 |
|
|
|
5452 |
paddr = strchr(devnm, '@');
|
|
|
5453 |
if (paddr == NULL)
|
|
|
5454 |
return (MDI_FAILURE);
|
|
|
5455 |
|
|
|
5456 |
paddr++; /* skip '@' */
|
|
|
5457 |
pip = mdi_pi_find(pdip, NULL, paddr);
|
|
|
5458 |
while (pip == NULL && timeout > 0) {
|
|
|
5459 |
if (interval > timeout)
|
|
|
5460 |
interval = timeout;
|
|
|
5461 |
if (flags & NDI_DEVI_DEBUG) {
|
|
|
5462 |
cmn_err(CE_CONT, "%s%d: %s timeout %ld %ld\n",
|
|
|
5463 |
ddi_driver_name(pdip), ddi_get_instance(pdip),
|
|
|
5464 |
paddr, interval, timeout);
|
|
|
5465 |
}
|
|
|
5466 |
delay(interval);
|
|
|
5467 |
timeout -= interval;
|
|
|
5468 |
interval += interval;
|
|
|
5469 |
pip = mdi_pi_find(pdip, NULL, paddr);
|
|
|
5470 |
}
|
|
|
5471 |
|
|
|
5472 |
if (pip == NULL)
|
|
|
5473 |
return (MDI_FAILURE);
|
|
|
5474 |
dip = mdi_pi_get_client(pip);
|
|
|
5475 |
if (ndi_devi_online(dip, flags) != NDI_SUCCESS)
|
|
|
5476 |
return (MDI_FAILURE);
|
|
|
5477 |
*cdipp = dip;
|
|
|
5478 |
|
|
|
5479 |
/* TODO: holding should happen inside search functions */
|
|
|
5480 |
ndi_hold_devi(dip);
|
|
|
5481 |
return (MDI_SUCCESS);
|
|
|
5482 |
}
|
|
|
5483 |
|
|
|
5484 |
/*
|
|
|
5485 |
* Ensure phci powered up
|
|
|
5486 |
*/
|
|
|
5487 |
static void
|
|
|
5488 |
i_mdi_pm_hold_pip(mdi_pathinfo_t *pip)
|
|
|
5489 |
{
|
|
|
5490 |
dev_info_t *ph_dip;
|
|
|
5491 |
|
|
|
5492 |
ASSERT(pip != NULL);
|
|
|
5493 |
ASSERT(MUTEX_HELD(&MDI_PI(pip)->pi_mutex));
|
|
|
5494 |
|
|
|
5495 |
if (MDI_PI(pip)->pi_pm_held) {
|
|
|
5496 |
return;
|
|
|
5497 |
}
|
|
|
5498 |
|
|
|
5499 |
ph_dip = mdi_pi_get_phci(pip);
|
|
|
5500 |
MDI_DEBUG(4, (CE_NOTE, ph_dip, "i_mdi_pm_hold_pip for %s%d\n",
|
|
|
5501 |
ddi_get_name(ph_dip), ddi_get_instance(ph_dip)));
|
|
|
5502 |
if (ph_dip == NULL) {
|
|
|
5503 |
return;
|
|
|
5504 |
}
|
|
|
5505 |
|
|
|
5506 |
MDI_PI_UNLOCK(pip);
|
|
|
5507 |
MDI_DEBUG(4, (CE_NOTE, ph_dip, "kidsupcnt was %d\n",
|
|
|
5508 |
DEVI(ph_dip)->devi_pm_kidsupcnt));
|
|
|
5509 |
pm_hold_power(ph_dip);
|
|
|
5510 |
MDI_DEBUG(4, (CE_NOTE, ph_dip, "kidsupcnt is %d\n",
|
|
|
5511 |
DEVI(ph_dip)->devi_pm_kidsupcnt));
|
|
|
5512 |
MDI_PI_LOCK(pip);
|
|
|
5513 |
|
|
|
5514 |
MDI_PI(pip)->pi_pm_held = 1;
|
|
|
5515 |
}
|
|
|
5516 |
|
|
|
5517 |
/*
|
|
|
5518 |
* Allow phci powered down
|
|
|
5519 |
*/
|
|
|
5520 |
static void
|
|
|
5521 |
i_mdi_pm_rele_pip(mdi_pathinfo_t *pip)
|
|
|
5522 |
{
|
|
|
5523 |
dev_info_t *ph_dip = NULL;
|
|
|
5524 |
|
|
|
5525 |
ASSERT(pip != NULL);
|
|
|
5526 |
ASSERT(MUTEX_HELD(&MDI_PI(pip)->pi_mutex));
|
|
|
5527 |
|
|
|
5528 |
if (MDI_PI(pip)->pi_pm_held == 0) {
|
|
|
5529 |
return;
|
|
|
5530 |
}
|
|
|
5531 |
|
|
|
5532 |
ph_dip = mdi_pi_get_phci(pip);
|
|
|
5533 |
ASSERT(ph_dip != NULL);
|
|
|
5534 |
|
|
|
5535 |
MDI_PI_UNLOCK(pip);
|
|
|
5536 |
MDI_DEBUG(4, (CE_NOTE, ph_dip, "i_mdi_pm_rele_pip for %s%d\n",
|
|
|
5537 |
ddi_get_name(ph_dip), ddi_get_instance(ph_dip)));
|
|
|
5538 |
|
|
|
5539 |
MDI_DEBUG(4, (CE_NOTE, ph_dip, "kidsupcnt was %d\n",
|
|
|
5540 |
DEVI(ph_dip)->devi_pm_kidsupcnt));
|
|
|
5541 |
pm_rele_power(ph_dip);
|
|
|
5542 |
MDI_DEBUG(4, (CE_NOTE, ph_dip, "kidsupcnt is %d\n",
|
|
|
5543 |
DEVI(ph_dip)->devi_pm_kidsupcnt));
|
|
|
5544 |
|
|
|
5545 |
MDI_PI_LOCK(pip);
|
|
|
5546 |
MDI_PI(pip)->pi_pm_held = 0;
|
|
|
5547 |
}
|
|
|
5548 |
|
|
|
5549 |
static void
|
|
|
5550 |
i_mdi_pm_hold_client(mdi_client_t *ct, int incr)
|
|
|
5551 |
{
|
|
|
5552 |
ASSERT(ct);
|
|
|
5553 |
|
|
|
5554 |
ct->ct_power_cnt += incr;
|
|
|
5555 |
MDI_DEBUG(4, (CE_NOTE, ct->ct_dip, "i_mdi_pm_hold_client "
|
|
|
5556 |
"ct_power_cnt = %d incr = %d\n", ct->ct_power_cnt, incr));
|
|
|
5557 |
ASSERT(ct->ct_power_cnt >= 0);
|
|
|
5558 |
}
|
|
|
5559 |
|
|
|
5560 |
static void
|
|
|
5561 |
i_mdi_rele_all_phci(mdi_client_t *ct)
|
|
|
5562 |
{
|
|
|
5563 |
mdi_pathinfo_t *pip;
|
|
|
5564 |
|
|
|
5565 |
ASSERT(mutex_owned(&ct->ct_mutex));
|
|
|
5566 |
pip = (mdi_pathinfo_t *)ct->ct_path_head;
|
|
|
5567 |
while (pip != NULL) {
|
|
|
5568 |
mdi_hold_path(pip);
|
|
|
5569 |
MDI_PI_LOCK(pip);
|
|
|
5570 |
i_mdi_pm_rele_pip(pip);
|
|
|
5571 |
MDI_PI_UNLOCK(pip);
|
|
|
5572 |
mdi_rele_path(pip);
|
|
|
5573 |
pip = (mdi_pathinfo_t *)MDI_PI(pip)->pi_client_link;
|
|
|
5574 |
}
|
|
|
5575 |
}
|
|
|
5576 |
|
|
|
5577 |
static void
|
|
|
5578 |
i_mdi_pm_rele_client(mdi_client_t *ct, int decr)
|
|
|
5579 |
{
|
|
|
5580 |
ASSERT(ct);
|
|
|
5581 |
|
|
|
5582 |
if (i_ddi_node_state(ct->ct_dip) >= DS_READY) {
|
|
|
5583 |
ct->ct_power_cnt -= decr;
|
|
|
5584 |
MDI_DEBUG(4, (CE_NOTE, ct->ct_dip, "i_mdi_pm_rele_client "
|
|
|
5585 |
"ct_power_cnt = %d decr = %d\n", ct->ct_power_cnt, decr));
|
|
|
5586 |
}
|
|
|
5587 |
|
|
|
5588 |
ASSERT(ct->ct_power_cnt >= 0);
|
|
|
5589 |
if (ct->ct_power_cnt == 0) {
|
|
|
5590 |
i_mdi_rele_all_phci(ct);
|
|
|
5591 |
return;
|
|
|
5592 |
}
|
|
|
5593 |
}
|
|
|
5594 |
|
|
|
5595 |
static void
|
|
|
5596 |
i_mdi_pm_reset_client(mdi_client_t *ct)
|
|
|
5597 |
{
|
|
|
5598 |
MDI_DEBUG(4, (CE_NOTE, ct->ct_dip, "i_mdi_pm_reset_client "
|
|
|
5599 |
"ct_power_cnt = %d\n", ct->ct_power_cnt));
|
|
|
5600 |
ct->ct_power_cnt = 0;
|
|
|
5601 |
i_mdi_rele_all_phci(ct);
|
|
|
5602 |
ct->ct_powercnt_reset = 1;
|
|
|
5603 |
ct->ct_powercnt_held = 0;
|
|
|
5604 |
}
|
|
|
5605 |
|
|
|
5606 |
static void
|
|
|
5607 |
i_mdi_pm_hold_all_phci(mdi_client_t *ct)
|
|
|
5608 |
{
|
|
|
5609 |
mdi_pathinfo_t *pip;
|
|
|
5610 |
ASSERT(mutex_owned(&ct->ct_mutex));
|
|
|
5611 |
|
|
|
5612 |
pip = (mdi_pathinfo_t *)ct->ct_path_head;
|
|
|
5613 |
while (pip != NULL) {
|
|
|
5614 |
mdi_hold_path(pip);
|
|
|
5615 |
MDI_PI_LOCK(pip);
|
|
|
5616 |
i_mdi_pm_hold_pip(pip);
|
|
|
5617 |
MDI_PI_UNLOCK(pip);
|
|
|
5618 |
mdi_rele_path(pip);
|
|
|
5619 |
pip = (mdi_pathinfo_t *)MDI_PI(pip)->pi_client_link;
|
|
|
5620 |
}
|
|
|
5621 |
}
|
|
|
5622 |
|
|
|
5623 |
static int
|
|
|
5624 |
i_mdi_power_one_phci(mdi_pathinfo_t *pip)
|
|
|
5625 |
{
|
|
|
5626 |
int ret;
|
|
|
5627 |
dev_info_t *ph_dip;
|
|
|
5628 |
|
|
|
5629 |
MDI_PI_LOCK(pip);
|
|
|
5630 |
i_mdi_pm_hold_pip(pip);
|
|
|
5631 |
|
|
|
5632 |
ph_dip = mdi_pi_get_phci(pip);
|
|
|
5633 |
MDI_PI_UNLOCK(pip);
|
|
|
5634 |
|
|
|
5635 |
/* bring all components of phci to full power */
|
|
|
5636 |
MDI_DEBUG(4, (CE_NOTE, ph_dip, "i_mdi_power_one_phci "
|
|
|
5637 |
"pm_powerup for %s%d\n", ddi_get_name(ph_dip),
|
|
|
5638 |
ddi_get_instance(ph_dip)));
|
|
|
5639 |
|
|
|
5640 |
ret = pm_powerup(ph_dip);
|
|
|
5641 |
|
|
|
5642 |
if (ret == DDI_FAILURE) {
|
|
|
5643 |
MDI_DEBUG(4, (CE_NOTE, ph_dip, "i_mdi_power_one_phci "
|
|
|
5644 |
"pm_powerup FAILED for %s%d\n",
|
|
|
5645 |
ddi_get_name(ph_dip), ddi_get_instance(ph_dip)));
|
|
|
5646 |
|
|
|
5647 |
MDI_PI_LOCK(pip);
|
|
|
5648 |
i_mdi_pm_rele_pip(pip);
|
|
|
5649 |
MDI_PI_UNLOCK(pip);
|
|
|
5650 |
return (MDI_FAILURE);
|
|
|
5651 |
}
|
|
|
5652 |
|
|
|
5653 |
return (MDI_SUCCESS);
|
|
|
5654 |
}
|
|
|
5655 |
|
|
|
5656 |
static int
|
|
|
5657 |
i_mdi_power_all_phci(mdi_client_t *ct)
|
|
|
5658 |
{
|
|
|
5659 |
mdi_pathinfo_t *pip;
|
|
|
5660 |
int succeeded = 0;
|
|
|
5661 |
|
|
|
5662 |
pip = (mdi_pathinfo_t *)ct->ct_path_head;
|
|
|
5663 |
while (pip != NULL) {
|
|
|
5664 |
mdi_hold_path(pip);
|
|
|
5665 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
5666 |
if (i_mdi_power_one_phci(pip) == MDI_SUCCESS)
|
|
|
5667 |
succeeded = 1;
|
|
|
5668 |
|
|
|
5669 |
ASSERT(ct == MDI_PI(pip)->pi_client);
|
|
|
5670 |
MDI_CLIENT_LOCK(ct);
|
|
|
5671 |
mdi_rele_path(pip);
|
|
|
5672 |
pip = (mdi_pathinfo_t *)MDI_PI(pip)->pi_client_link;
|
|
|
5673 |
}
|
|
|
5674 |
|
|
|
5675 |
return (succeeded ? MDI_SUCCESS : MDI_FAILURE);
|
|
|
5676 |
}
|
|
|
5677 |
|
|
|
5678 |
/*
|
|
|
5679 |
* mdi_bus_power():
|
|
|
5680 |
* 1. Place the phci(s) into powered up state so that
|
|
|
5681 |
* client can do power management
|
|
|
5682 |
* 2. Ensure phci powered up as client power managing
|
|
|
5683 |
* Return Values:
|
|
|
5684 |
* MDI_SUCCESS
|
|
|
5685 |
* MDI_FAILURE
|
|
|
5686 |
*/
|
|
|
5687 |
int
|
|
|
5688 |
mdi_bus_power(dev_info_t *parent, void *impl_arg, pm_bus_power_op_t op,
|
|
|
5689 |
void *arg, void *result)
|
|
|
5690 |
{
|
|
|
5691 |
int ret = MDI_SUCCESS;
|
|
|
5692 |
pm_bp_child_pwrchg_t *bpc;
|
|
|
5693 |
mdi_client_t *ct;
|
|
|
5694 |
dev_info_t *cdip;
|
|
|
5695 |
pm_bp_has_changed_t *bphc;
|
|
|
5696 |
|
|
|
5697 |
/*
|
|
|
5698 |
* BUS_POWER_NOINVOL not supported
|
|
|
5699 |
*/
|
|
|
5700 |
if (op == BUS_POWER_NOINVOL)
|
|
|
5701 |
return (MDI_FAILURE);
|
|
|
5702 |
|
|
|
5703 |
/*
|
|
|
5704 |
* ignore other OPs.
|
|
|
5705 |
* return quickly to save cou cycles on the ct processing
|
|
|
5706 |
*/
|
|
|
5707 |
switch (op) {
|
|
|
5708 |
case BUS_POWER_PRE_NOTIFICATION:
|
|
|
5709 |
case BUS_POWER_POST_NOTIFICATION:
|
|
|
5710 |
bpc = (pm_bp_child_pwrchg_t *)arg;
|
|
|
5711 |
cdip = bpc->bpc_dip;
|
|
|
5712 |
break;
|
|
|
5713 |
case BUS_POWER_HAS_CHANGED:
|
|
|
5714 |
bphc = (pm_bp_has_changed_t *)arg;
|
|
|
5715 |
cdip = bphc->bphc_dip;
|
|
|
5716 |
break;
|
|
|
5717 |
default:
|
|
|
5718 |
return (pm_busop_bus_power(parent, impl_arg, op, arg, result));
|
|
|
5719 |
}
|
|
|
5720 |
|
|
|
5721 |
ASSERT(MDI_CLIENT(cdip));
|
|
|
5722 |
|
|
|
5723 |
ct = i_devi_get_client(cdip);
|
|
|
5724 |
if (ct == NULL)
|
|
|
5725 |
return (MDI_FAILURE);
|
|
|
5726 |
|
|
|
5727 |
/*
|
|
|
5728 |
* wait till the mdi_pathinfo node state change are processed
|
|
|
5729 |
*/
|
|
|
5730 |
MDI_CLIENT_LOCK(ct);
|
|
|
5731 |
switch (op) {
|
|
|
5732 |
case BUS_POWER_PRE_NOTIFICATION:
|
|
|
5733 |
MDI_DEBUG(4, (CE_NOTE, bpc->bpc_dip, "mdi_bus_power "
|
|
|
5734 |
"BUS_POWER_PRE_NOTIFICATION:"
|
|
|
5735 |
"%s@%s, olevel=%d, nlevel=%d, comp=%d\n",
|
|
|
5736 |
PM_NAME(bpc->bpc_dip), PM_ADDR(bpc->bpc_dip),
|
|
|
5737 |
bpc->bpc_olevel, bpc->bpc_nlevel, bpc->bpc_comp));
|
|
|
5738 |
|
|
|
5739 |
/* serialize power level change per client */
|
|
|
5740 |
while (MDI_CLIENT_IS_POWER_TRANSITION(ct))
|
|
|
5741 |
cv_wait(&ct->ct_powerchange_cv, &ct->ct_mutex);
|
|
|
5742 |
|
|
|
5743 |
MDI_CLIENT_SET_POWER_TRANSITION(ct);
|
|
|
5744 |
|
|
|
5745 |
if (ct->ct_power_cnt == 0) {
|
|
|
5746 |
ret = i_mdi_power_all_phci(ct);
|
|
|
5747 |
}
|
|
|
5748 |
|
|
|
5749 |
/*
|
|
|
5750 |
* if new_level > 0:
|
|
|
5751 |
* - hold phci(s)
|
|
|
5752 |
* - power up phci(s) if not already
|
|
|
5753 |
* ignore power down
|
|
|
5754 |
*/
|
|
|
5755 |
if (bpc->bpc_nlevel > 0) {
|
|
|
5756 |
if (!DEVI_IS_ATTACHING(ct->ct_dip)) {
|
|
|
5757 |
MDI_DEBUG(4, (CE_NOTE, bpc->bpc_dip,
|
|
|
5758 |
"mdi_bus_power i_mdi_pm_hold_client\n"));
|
|
|
5759 |
i_mdi_pm_hold_client(ct, ct->ct_path_count);
|
|
|
5760 |
}
|
|
|
5761 |
}
|
|
|
5762 |
break;
|
|
|
5763 |
case BUS_POWER_POST_NOTIFICATION:
|
|
|
5764 |
MDI_DEBUG(4, (CE_NOTE, bpc->bpc_dip, "mdi_bus_power "
|
|
|
5765 |
"BUS_POWER_POST_NOTIFICATION:"
|
|
|
5766 |
"%s@%s, olevel=%d, nlevel=%d, comp=%d result=%d\n",
|
|
|
5767 |
PM_NAME(bpc->bpc_dip), PM_ADDR(bpc->bpc_dip),
|
|
|
5768 |
bpc->bpc_olevel, bpc->bpc_nlevel, bpc->bpc_comp,
|
|
|
5769 |
*(int *)result));
|
|
|
5770 |
|
|
|
5771 |
if (*(int *)result == DDI_SUCCESS) {
|
|
|
5772 |
if (bpc->bpc_nlevel > 0) {
|
|
|
5773 |
MDI_CLIENT_SET_POWER_UP(ct);
|
|
|
5774 |
} else {
|
|
|
5775 |
MDI_CLIENT_SET_POWER_DOWN(ct);
|
|
|
5776 |
}
|
|
|
5777 |
}
|
|
|
5778 |
|
|
|
5779 |
/* release the hold we did in pre-notification */
|
|
|
5780 |
if (bpc->bpc_nlevel > 0 && (*(int *)result != DDI_SUCCESS) &&
|
|
|
5781 |
!DEVI_IS_ATTACHING(ct->ct_dip)) {
|
|
|
5782 |
MDI_DEBUG(4, (CE_NOTE, bpc->bpc_dip,
|
|
|
5783 |
"mdi_bus_power i_mdi_pm_rele_client\n"));
|
|
|
5784 |
i_mdi_pm_rele_client(ct, ct->ct_path_count);
|
|
|
5785 |
}
|
|
|
5786 |
|
|
|
5787 |
if (bpc->bpc_nlevel == 0 && (*(int *)result == DDI_SUCCESS)) {
|
|
|
5788 |
/* another thread might started attaching */
|
|
|
5789 |
if (DEVI_IS_ATTACHING(ct->ct_dip)) {
|
|
|
5790 |
MDI_DEBUG(4, (CE_NOTE, bpc->bpc_dip,
|
|
|
5791 |
"mdi_bus_power i_mdi_pm_rele_client\n"));
|
|
|
5792 |
i_mdi_pm_rele_client(ct, ct->ct_path_count);
|
|
|
5793 |
/* detaching has been taken care in pm_post_unconfig */
|
|
|
5794 |
} else if (!DEVI_IS_DETACHING(ct->ct_dip)) {
|
|
|
5795 |
MDI_DEBUG(4, (CE_NOTE, bpc->bpc_dip,
|
|
|
5796 |
"mdi_bus_power i_mdi_pm_reset_client\n"));
|
|
|
5797 |
i_mdi_pm_reset_client(ct);
|
|
|
5798 |
}
|
|
|
5799 |
}
|
|
|
5800 |
|
|
|
5801 |
MDI_CLIENT_CLEAR_POWER_TRANSITION(ct);
|
|
|
5802 |
cv_broadcast(&ct->ct_powerchange_cv);
|
|
|
5803 |
|
|
|
5804 |
break;
|
|
|
5805 |
|
|
|
5806 |
/* need to do more */
|
|
|
5807 |
case BUS_POWER_HAS_CHANGED:
|
|
|
5808 |
MDI_DEBUG(4, (CE_NOTE, bphc->bphc_dip, "mdi_bus_power "
|
|
|
5809 |
"BUS_POWER_HAS_CHANGED:"
|
|
|
5810 |
"%s@%s, olevel=%d, nlevel=%d, comp=%d\n",
|
|
|
5811 |
PM_NAME(bphc->bphc_dip), PM_ADDR(bphc->bphc_dip),
|
|
|
5812 |
bphc->bphc_olevel, bphc->bphc_nlevel, bphc->bphc_comp));
|
|
|
5813 |
|
|
|
5814 |
if (bphc->bphc_nlevel > 0 &&
|
|
|
5815 |
bphc->bphc_nlevel > bphc->bphc_olevel) {
|
|
|
5816 |
if (ct->ct_power_cnt == 0) {
|
|
|
5817 |
ret = i_mdi_power_all_phci(ct);
|
|
|
5818 |
}
|
|
|
5819 |
MDI_DEBUG(4, (CE_NOTE, bphc->bphc_dip,
|
|
|
5820 |
"mdi_bus_power i_mdi_pm_hold_client\n"));
|
|
|
5821 |
i_mdi_pm_hold_client(ct, ct->ct_path_count);
|
|
|
5822 |
}
|
|
|
5823 |
|
|
|
5824 |
if (bphc->bphc_nlevel == 0 && bphc->bphc_olevel != -1) {
|
|
|
5825 |
MDI_DEBUG(4, (CE_NOTE, bphc->bphc_dip,
|
|
|
5826 |
"mdi_bus_power i_mdi_pm_rele_client\n"));
|
|
|
5827 |
i_mdi_pm_rele_client(ct, ct->ct_path_count);
|
|
|
5828 |
}
|
|
|
5829 |
break;
|
|
|
5830 |
}
|
|
|
5831 |
|
|
|
5832 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
5833 |
return (ret);
|
|
|
5834 |
}
|
|
|
5835 |
|
|
|
5836 |
static int
|
|
|
5837 |
i_mdi_pm_pre_config_one(dev_info_t *child)
|
|
|
5838 |
{
|
|
|
5839 |
int ret = MDI_SUCCESS;
|
|
|
5840 |
mdi_client_t *ct;
|
|
|
5841 |
|
|
|
5842 |
ct = i_devi_get_client(child);
|
|
|
5843 |
if (ct == NULL)
|
|
|
5844 |
return (MDI_FAILURE);
|
|
|
5845 |
|
|
|
5846 |
MDI_CLIENT_LOCK(ct);
|
|
|
5847 |
while (MDI_CLIENT_IS_POWER_TRANSITION(ct))
|
|
|
5848 |
cv_wait(&ct->ct_powerchange_cv, &ct->ct_mutex);
|
|
|
5849 |
|
|
|
5850 |
if (!MDI_CLIENT_IS_FAILED(ct)) {
|
|
|
5851 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
5852 |
MDI_DEBUG(4, (CE_NOTE, child,
|
|
|
5853 |
"i_mdi_pm_pre_config_one already configured\n"));
|
|
|
5854 |
return (MDI_SUCCESS);
|
|
|
5855 |
}
|
|
|
5856 |
|
|
|
5857 |
if (ct->ct_powercnt_held) {
|
|
|
5858 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
5859 |
MDI_DEBUG(4, (CE_NOTE, child,
|
|
|
5860 |
"i_mdi_pm_pre_config_one ALREADY held\n"));
|
|
|
5861 |
return (MDI_SUCCESS);
|
|
|
5862 |
}
|
|
|
5863 |
|
|
|
5864 |
if (ct->ct_power_cnt == 0) {
|
|
|
5865 |
ret = i_mdi_power_all_phci(ct);
|
|
|
5866 |
}
|
|
|
5867 |
MDI_DEBUG(4, (CE_NOTE, child,
|
|
|
5868 |
"i_mdi_pm_pre_config_one i_mdi_pm_hold_client\n"));
|
|
|
5869 |
i_mdi_pm_hold_client(ct, ct->ct_path_count);
|
|
|
5870 |
ct->ct_powercnt_held = 1;
|
|
|
5871 |
ct->ct_powercnt_reset = 0;
|
|
|
5872 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
5873 |
return (ret);
|
|
|
5874 |
}
|
|
|
5875 |
|
|
|
5876 |
static int
|
|
|
5877 |
i_mdi_pm_pre_config(dev_info_t *parent, dev_info_t *child)
|
|
|
5878 |
{
|
|
|
5879 |
int ret = MDI_SUCCESS;
|
|
|
5880 |
dev_info_t *cdip;
|
|
|
5881 |
int circ;
|
|
|
5882 |
|
|
|
5883 |
ASSERT(MDI_VHCI(parent));
|
|
|
5884 |
|
|
|
5885 |
/* ndi_devi_config_one */
|
|
|
5886 |
if (child) {
|
|
|
5887 |
return (i_mdi_pm_pre_config_one(child));
|
|
|
5888 |
}
|
|
|
5889 |
|
|
|
5890 |
/* devi_config_common */
|
|
|
5891 |
ndi_devi_enter(parent, &circ);
|
|
|
5892 |
cdip = ddi_get_child(parent);
|
|
|
5893 |
while (cdip) {
|
|
|
5894 |
dev_info_t *next = ddi_get_next_sibling(cdip);
|
|
|
5895 |
|
|
|
5896 |
ret = i_mdi_pm_pre_config_one(cdip);
|
|
|
5897 |
if (ret != MDI_SUCCESS)
|
|
|
5898 |
break;
|
|
|
5899 |
cdip = next;
|
|
|
5900 |
}
|
|
|
5901 |
ndi_devi_exit(parent, circ);
|
|
|
5902 |
return (ret);
|
|
|
5903 |
}
|
|
|
5904 |
|
|
|
5905 |
static int
|
|
|
5906 |
i_mdi_pm_pre_unconfig_one(dev_info_t *child, int *held, int flags)
|
|
|
5907 |
{
|
|
|
5908 |
int ret = MDI_SUCCESS;
|
|
|
5909 |
mdi_client_t *ct;
|
|
|
5910 |
|
|
|
5911 |
ct = i_devi_get_client(child);
|
|
|
5912 |
if (ct == NULL)
|
|
|
5913 |
return (MDI_FAILURE);
|
|
|
5914 |
|
|
|
5915 |
MDI_CLIENT_LOCK(ct);
|
|
|
5916 |
while (MDI_CLIENT_IS_POWER_TRANSITION(ct))
|
|
|
5917 |
cv_wait(&ct->ct_powerchange_cv, &ct->ct_mutex);
|
|
|
5918 |
|
|
|
5919 |
if (i_ddi_node_state(ct->ct_dip) < DS_READY) {
|
|
|
5920 |
MDI_DEBUG(4, (CE_NOTE, child,
|
|
|
5921 |
"i_mdi_pm_pre_unconfig node detached already\n"));
|
|
|
5922 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
5923 |
return (MDI_SUCCESS);
|
|
|
5924 |
}
|
|
|
5925 |
|
|
|
5926 |
if (MDI_CLIENT_IS_POWERED_DOWN(ct) &&
|
|
|
5927 |
(flags & NDI_AUTODETACH)) {
|
|
|
5928 |
MDI_DEBUG(4, (CE_NOTE, child,
|
|
|
5929 |
"i_mdi_pm_pre_unconfig auto-modunload\n"));
|
|
|
5930 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
5931 |
return (MDI_FAILURE);
|
|
|
5932 |
}
|
|
|
5933 |
|
|
|
5934 |
if (ct->ct_powercnt_held) {
|
|
|
5935 |
MDI_DEBUG(4, (CE_NOTE, child,
|
|
|
5936 |
"i_mdi_pm_pre_unconfig ct_powercnt_held\n"));
|
|
|
5937 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
5938 |
*held = 1;
|
|
|
5939 |
return (MDI_SUCCESS);
|
|
|
5940 |
}
|
|
|
5941 |
|
|
|
5942 |
if (ct->ct_power_cnt == 0) {
|
|
|
5943 |
ret = i_mdi_power_all_phci(ct);
|
|
|
5944 |
}
|
|
|
5945 |
MDI_DEBUG(4, (CE_NOTE, child,
|
|
|
5946 |
"i_mdi_pm_pre_unconfig i_mdi_pm_hold_client\n"));
|
|
|
5947 |
i_mdi_pm_hold_client(ct, ct->ct_path_count);
|
|
|
5948 |
ct->ct_powercnt_held = 1;
|
|
|
5949 |
ct->ct_powercnt_reset = 0;
|
|
|
5950 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
5951 |
if (ret == MDI_SUCCESS)
|
|
|
5952 |
*held = 1;
|
|
|
5953 |
return (ret);
|
|
|
5954 |
}
|
|
|
5955 |
|
|
|
5956 |
static int
|
|
|
5957 |
i_mdi_pm_pre_unconfig(dev_info_t *parent, dev_info_t *child, int *held,
|
|
|
5958 |
int flags)
|
|
|
5959 |
{
|
|
|
5960 |
int ret = MDI_SUCCESS;
|
|
|
5961 |
dev_info_t *cdip;
|
|
|
5962 |
int circ;
|
|
|
5963 |
|
|
|
5964 |
ASSERT(MDI_VHCI(parent));
|
|
|
5965 |
*held = 0;
|
|
|
5966 |
|
|
|
5967 |
/* ndi_devi_unconfig_one */
|
|
|
5968 |
if (child) {
|
|
|
5969 |
return (i_mdi_pm_pre_unconfig_one(child, held, flags));
|
|
|
5970 |
}
|
|
|
5971 |
|
|
|
5972 |
/* devi_unconfig_common */
|
|
|
5973 |
ndi_devi_enter(parent, &circ);
|
|
|
5974 |
cdip = ddi_get_child(parent);
|
|
|
5975 |
while (cdip) {
|
|
|
5976 |
dev_info_t *next = ddi_get_next_sibling(cdip);
|
|
|
5977 |
|
|
|
5978 |
ret = i_mdi_pm_pre_unconfig_one(cdip, held, flags);
|
|
|
5979 |
cdip = next;
|
|
|
5980 |
}
|
|
|
5981 |
ndi_devi_exit(parent, circ);
|
|
|
5982 |
|
|
|
5983 |
if (*held)
|
|
|
5984 |
ret = MDI_SUCCESS;
|
|
|
5985 |
|
|
|
5986 |
return (ret);
|
|
|
5987 |
}
|
|
|
5988 |
|
|
|
5989 |
static void
|
|
|
5990 |
i_mdi_pm_post_config_one(dev_info_t *child)
|
|
|
5991 |
{
|
|
|
5992 |
mdi_client_t *ct;
|
|
|
5993 |
|
|
|
5994 |
ct = i_devi_get_client(child);
|
|
|
5995 |
if (ct == NULL)
|
|
|
5996 |
return;
|
|
|
5997 |
|
|
|
5998 |
MDI_CLIENT_LOCK(ct);
|
|
|
5999 |
while (MDI_CLIENT_IS_POWER_TRANSITION(ct))
|
|
|
6000 |
cv_wait(&ct->ct_powerchange_cv, &ct->ct_mutex);
|
|
|
6001 |
|
|
|
6002 |
if (ct->ct_powercnt_reset || !ct->ct_powercnt_held) {
|
|
|
6003 |
MDI_DEBUG(4, (CE_NOTE, child,
|
|
|
6004 |
"i_mdi_pm_post_config_one NOT held\n"));
|
|
|
6005 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
6006 |
return;
|
|
|
6007 |
}
|
|
|
6008 |
|
|
|
6009 |
/* client has not been updated */
|
|
|
6010 |
if (MDI_CLIENT_IS_FAILED(ct)) {
|
|
|
6011 |
MDI_DEBUG(4, (CE_NOTE, child,
|
|
|
6012 |
"i_mdi_pm_post_config_one NOT configured\n"));
|
|
|
6013 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
6014 |
return;
|
|
|
6015 |
}
|
|
|
6016 |
|
|
|
6017 |
/* another thread might have powered it down or detached it */
|
|
|
6018 |
if ((MDI_CLIENT_IS_POWERED_DOWN(ct) &&
|
|
|
6019 |
!DEVI_IS_ATTACHING(ct->ct_dip)) ||
|
|
|
6020 |
(i_ddi_node_state(ct->ct_dip) < DS_READY &&
|
|
|
6021 |
!DEVI_IS_ATTACHING(ct->ct_dip))) {
|
|
|
6022 |
MDI_DEBUG(4, (CE_NOTE, child,
|
|
|
6023 |
"i_mdi_pm_post_config i_mdi_pm_reset_client\n"));
|
|
|
6024 |
i_mdi_pm_reset_client(ct);
|
|
|
6025 |
} else {
|
|
|
6026 |
mdi_pathinfo_t *pip, *next;
|
|
|
6027 |
int valid_path_count = 0;
|
|
|
6028 |
|
|
|
6029 |
MDI_DEBUG(4, (CE_NOTE, child,
|
|
|
6030 |
"i_mdi_pm_post_config i_mdi_pm_rele_client\n"));
|
|
|
6031 |
pip = ct->ct_path_head;
|
|
|
6032 |
while (pip != NULL) {
|
|
|
6033 |
MDI_PI_LOCK(pip);
|
|
|
6034 |
next = (mdi_pathinfo_t *)MDI_PI(pip)->pi_client_link;
|
|
|
6035 |
if ((MDI_PI(pip)->pi_state & MDI_PATHINFO_STATE_MASK)
|
|
|
6036 |
== MDI_PATHINFO_STATE_ONLINE ||
|
|
|
6037 |
(MDI_PI(pip)->pi_state & MDI_PATHINFO_STATE_MASK)
|
|
|
6038 |
== MDI_PATHINFO_STATE_STANDBY)
|
|
|
6039 |
valid_path_count ++;
|
|
|
6040 |
MDI_PI_UNLOCK(pip);
|
|
|
6041 |
pip = next;
|
|
|
6042 |
}
|
|
|
6043 |
i_mdi_pm_rele_client(ct, valid_path_count);
|
|
|
6044 |
}
|
|
|
6045 |
ct->ct_powercnt_held = 0;
|
|
|
6046 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
6047 |
}
|
|
|
6048 |
|
|
|
6049 |
static void
|
|
|
6050 |
i_mdi_pm_post_config(dev_info_t *parent, dev_info_t *child)
|
|
|
6051 |
{
|
|
|
6052 |
int circ;
|
|
|
6053 |
dev_info_t *cdip;
|
|
|
6054 |
ASSERT(MDI_VHCI(parent));
|
|
|
6055 |
|
|
|
6056 |
/* ndi_devi_config_one */
|
|
|
6057 |
if (child) {
|
|
|
6058 |
i_mdi_pm_post_config_one(child);
|
|
|
6059 |
return;
|
|
|
6060 |
}
|
|
|
6061 |
|
|
|
6062 |
/* devi_config_common */
|
|
|
6063 |
ndi_devi_enter(parent, &circ);
|
|
|
6064 |
cdip = ddi_get_child(parent);
|
|
|
6065 |
while (cdip) {
|
|
|
6066 |
dev_info_t *next = ddi_get_next_sibling(cdip);
|
|
|
6067 |
|
|
|
6068 |
i_mdi_pm_post_config_one(cdip);
|
|
|
6069 |
cdip = next;
|
|
|
6070 |
}
|
|
|
6071 |
ndi_devi_exit(parent, circ);
|
|
|
6072 |
}
|
|
|
6073 |
|
|
|
6074 |
static void
|
|
|
6075 |
i_mdi_pm_post_unconfig_one(dev_info_t *child)
|
|
|
6076 |
{
|
|
|
6077 |
mdi_client_t *ct;
|
|
|
6078 |
|
|
|
6079 |
ct = i_devi_get_client(child);
|
|
|
6080 |
if (ct == NULL)
|
|
|
6081 |
return;
|
|
|
6082 |
|
|
|
6083 |
MDI_CLIENT_LOCK(ct);
|
|
|
6084 |
while (MDI_CLIENT_IS_POWER_TRANSITION(ct))
|
|
|
6085 |
cv_wait(&ct->ct_powerchange_cv, &ct->ct_mutex);
|
|
|
6086 |
|
|
|
6087 |
if (!ct->ct_powercnt_held) {
|
|
|
6088 |
MDI_DEBUG(4, (CE_NOTE, child,
|
|
|
6089 |
"i_mdi_pm_post_unconfig NOT held\n"));
|
|
|
6090 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
6091 |
return;
|
|
|
6092 |
}
|
|
|
6093 |
|
|
|
6094 |
/* failure detaching or another thread just attached it */
|
|
|
6095 |
if ((MDI_CLIENT_IS_POWERED_DOWN(ct) &&
|
|
|
6096 |
i_ddi_node_state(ct->ct_dip) == DS_READY) ||
|
|
|
6097 |
(i_ddi_node_state(ct->ct_dip) != DS_READY &&
|
|
|
6098 |
!DEVI_IS_ATTACHING(ct->ct_dip))) {
|
|
|
6099 |
MDI_DEBUG(4, (CE_NOTE, child,
|
|
|
6100 |
"i_mdi_pm_post_unconfig i_mdi_pm_reset_client\n"));
|
|
|
6101 |
i_mdi_pm_reset_client(ct);
|
|
|
6102 |
}
|
|
|
6103 |
|
|
|
6104 |
MDI_DEBUG(4, (CE_NOTE, child,
|
|
|
6105 |
"i_mdi_pm_post_unconfig not changed\n"));
|
|
|
6106 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
6107 |
}
|
|
|
6108 |
|
|
|
6109 |
static void
|
|
|
6110 |
i_mdi_pm_post_unconfig(dev_info_t *parent, dev_info_t *child, int held)
|
|
|
6111 |
{
|
|
|
6112 |
int circ;
|
|
|
6113 |
dev_info_t *cdip;
|
|
|
6114 |
|
|
|
6115 |
ASSERT(MDI_VHCI(parent));
|
|
|
6116 |
|
|
|
6117 |
if (!held) {
|
|
|
6118 |
MDI_DEBUG(4, (CE_NOTE, parent,
|
|
|
6119 |
"i_mdi_pm_post_unconfig held = %d\n", held));
|
|
|
6120 |
return;
|
|
|
6121 |
}
|
|
|
6122 |
|
|
|
6123 |
if (child) {
|
|
|
6124 |
i_mdi_pm_post_unconfig_one(child);
|
|
|
6125 |
return;
|
|
|
6126 |
}
|
|
|
6127 |
|
|
|
6128 |
ndi_devi_enter(parent, &circ);
|
|
|
6129 |
cdip = ddi_get_child(parent);
|
|
|
6130 |
while (cdip) {
|
|
|
6131 |
dev_info_t *next = ddi_get_next_sibling(cdip);
|
|
|
6132 |
|
|
|
6133 |
i_mdi_pm_post_unconfig_one(cdip);
|
|
|
6134 |
cdip = next;
|
|
|
6135 |
}
|
|
|
6136 |
ndi_devi_exit(parent, circ);
|
|
|
6137 |
}
|
|
|
6138 |
|
|
|
6139 |
int
|
|
|
6140 |
mdi_power(dev_info_t *vdip, mdi_pm_op_t op, void *args, char *devnm, int flags)
|
|
|
6141 |
{
|
|
|
6142 |
int circ, ret = MDI_SUCCESS;
|
|
|
6143 |
dev_info_t *client_dip = NULL;
|
|
|
6144 |
mdi_client_t *ct;
|
|
|
6145 |
|
|
|
6146 |
/*
|
|
|
6147 |
* Handling ndi_devi_config_one and ndi_devi_unconfig_one.
|
|
|
6148 |
* Power up pHCI for the named client device.
|
|
|
6149 |
* Note: Before the client is enumerated under vhci by phci,
|
|
|
6150 |
* client_dip can be NULL. Then proceed to power up all the
|
|
|
6151 |
* pHCIs.
|
|
|
6152 |
*/
|
|
|
6153 |
if (devnm != NULL) {
|
|
|
6154 |
ndi_devi_enter(vdip, &circ);
|
|
|
6155 |
client_dip = ndi_devi_findchild(vdip, devnm);
|
|
|
6156 |
ndi_devi_exit(vdip, circ);
|
|
|
6157 |
}
|
|
|
6158 |
|
|
|
6159 |
MDI_DEBUG(4, (CE_NOTE, vdip, "mdi_power op = %d\n", op));
|
|
|
6160 |
|
|
|
6161 |
switch (op) {
|
|
|
6162 |
case MDI_PM_PRE_CONFIG:
|
|
|
6163 |
ret = i_mdi_pm_pre_config(vdip, client_dip);
|
|
|
6164 |
|
|
|
6165 |
break;
|
|
|
6166 |
case MDI_PM_PRE_UNCONFIG:
|
|
|
6167 |
ret = i_mdi_pm_pre_unconfig(vdip, client_dip, (int *)args,
|
|
|
6168 |
flags);
|
|
|
6169 |
|
|
|
6170 |
break;
|
|
|
6171 |
case MDI_PM_POST_CONFIG:
|
|
|
6172 |
i_mdi_pm_post_config(vdip, client_dip);
|
|
|
6173 |
|
|
|
6174 |
break;
|
|
|
6175 |
case MDI_PM_POST_UNCONFIG:
|
|
|
6176 |
i_mdi_pm_post_unconfig(vdip, client_dip, *(int *)args);
|
|
|
6177 |
|
|
|
6178 |
break;
|
|
|
6179 |
case MDI_PM_HOLD_POWER:
|
|
|
6180 |
case MDI_PM_RELE_POWER:
|
|
|
6181 |
ASSERT(args);
|
|
|
6182 |
|
|
|
6183 |
client_dip = (dev_info_t *)args;
|
|
|
6184 |
ASSERT(MDI_CLIENT(client_dip));
|
|
|
6185 |
|
|
|
6186 |
ct = i_devi_get_client(client_dip);
|
|
|
6187 |
MDI_CLIENT_LOCK(ct);
|
|
|
6188 |
|
|
|
6189 |
if (op == MDI_PM_HOLD_POWER) {
|
|
|
6190 |
if (ct->ct_power_cnt == 0) {
|
|
|
6191 |
(void) i_mdi_power_all_phci(ct);
|
|
|
6192 |
MDI_DEBUG(4, (CE_NOTE, client_dip,
|
|
|
6193 |
"mdi_power i_mdi_pm_hold_client\n"));
|
|
|
6194 |
i_mdi_pm_hold_client(ct, ct->ct_path_count);
|
|
|
6195 |
}
|
|
|
6196 |
} else {
|
|
|
6197 |
if (DEVI_IS_ATTACHING(ct->ct_dip)) {
|
|
|
6198 |
MDI_DEBUG(4, (CE_NOTE, client_dip,
|
|
|
6199 |
"mdi_power i_mdi_pm_rele_client\n"));
|
|
|
6200 |
i_mdi_pm_rele_client(ct, ct->ct_path_count);
|
|
|
6201 |
} else {
|
|
|
6202 |
MDI_DEBUG(4, (CE_NOTE, client_dip,
|
|
|
6203 |
"mdi_power i_mdi_pm_reset_client\n"));
|
|
|
6204 |
i_mdi_pm_reset_client(ct);
|
|
|
6205 |
}
|
|
|
6206 |
}
|
|
|
6207 |
|
|
|
6208 |
MDI_CLIENT_UNLOCK(ct);
|
|
|
6209 |
break;
|
|
|
6210 |
default:
|
|
|
6211 |
break;
|
|
|
6212 |
}
|
|
|
6213 |
|
|
|
6214 |
return (ret);
|
|
|
6215 |
}
|
|
|
6216 |
|
|
|
6217 |
int
|
|
|
6218 |
mdi_component_is_vhci(dev_info_t *dip, const char **mdi_class)
|
|
|
6219 |
{
|
|
|
6220 |
mdi_vhci_t *vhci;
|
|
|
6221 |
|
|
|
6222 |
if (!MDI_VHCI(dip))
|
|
|
6223 |
return (MDI_FAILURE);
|
|
|
6224 |
|
|
|
6225 |
if (mdi_class) {
|
|
|
6226 |
vhci = DEVI(dip)->devi_mdi_xhci;
|
|
|
6227 |
ASSERT(vhci);
|
|
|
6228 |
*mdi_class = vhci->vh_class;
|
|
|
6229 |
}
|
|
|
6230 |
|
|
|
6231 |
return (MDI_SUCCESS);
|
|
|
6232 |
}
|
|
|
6233 |
|
|
|
6234 |
int
|
|
|
6235 |
mdi_component_is_phci(dev_info_t *dip, const char **mdi_class)
|
|
|
6236 |
{
|
|
|
6237 |
mdi_phci_t *phci;
|
|
|
6238 |
|
|
|
6239 |
if (!MDI_PHCI(dip))
|
|
|
6240 |
return (MDI_FAILURE);
|
|
|
6241 |
|
|
|
6242 |
if (mdi_class) {
|
|
|
6243 |
phci = DEVI(dip)->devi_mdi_xhci;
|
|
|
6244 |
ASSERT(phci);
|
|
|
6245 |
*mdi_class = phci->ph_vhci->vh_class;
|
|
|
6246 |
}
|
|
|
6247 |
|
|
|
6248 |
return (MDI_SUCCESS);
|
|
|
6249 |
}
|
|
|
6250 |
|
|
|
6251 |
int
|
|
|
6252 |
mdi_component_is_client(dev_info_t *dip, const char **mdi_class)
|
|
|
6253 |
{
|
|
|
6254 |
mdi_client_t *client;
|
|
|
6255 |
|
|
|
6256 |
if (!MDI_CLIENT(dip))
|
|
|
6257 |
return (MDI_FAILURE);
|
|
|
6258 |
|
|
|
6259 |
if (mdi_class) {
|
|
|
6260 |
client = DEVI(dip)->devi_mdi_client;
|
|
|
6261 |
ASSERT(client);
|
|
|
6262 |
*mdi_class = client->ct_vhci->vh_class;
|
|
|
6263 |
}
|
|
|
6264 |
|
|
|
6265 |
return (MDI_SUCCESS);
|
|
|
6266 |
}
|
|
|
6267 |
|
|
|
6268 |
void *
|
|
|
6269 |
mdi_client_get_vhci_private(dev_info_t *dip)
|
|
|
6270 |
{
|
|
|
6271 |
ASSERT(mdi_component_is_client(dip, NULL) == MDI_SUCCESS);
|
|
|
6272 |
if (mdi_component_is_client(dip, NULL) == MDI_SUCCESS) {
|
|
|
6273 |
mdi_client_t *ct;
|
|
|
6274 |
ct = i_devi_get_client(dip);
|
|
|
6275 |
return (ct->ct_vprivate);
|
|
|
6276 |
}
|
|
|
6277 |
return (NULL);
|
|
|
6278 |
}
|
|
|
6279 |
|
|
|
6280 |
void
|
|
|
6281 |
mdi_client_set_vhci_private(dev_info_t *dip, void *data)
|
|
|
6282 |
{
|
|
|
6283 |
ASSERT(mdi_component_is_client(dip, NULL) == MDI_SUCCESS);
|
|
|
6284 |
if (mdi_component_is_client(dip, NULL) == MDI_SUCCESS) {
|
|
|
6285 |
mdi_client_t *ct;
|
|
|
6286 |
ct = i_devi_get_client(dip);
|
|
|
6287 |
ct->ct_vprivate = data;
|
|
|
6288 |
}
|
|
|
6289 |
}
|
|
|
6290 |
/*
|
|
|
6291 |
* mdi_pi_get_vhci_private():
|
|
|
6292 |
* Get the vhci private information associated with the
|
|
|
6293 |
* mdi_pathinfo node
|
|
|
6294 |
*/
|
|
|
6295 |
void *
|
|
|
6296 |
mdi_pi_get_vhci_private(mdi_pathinfo_t *pip)
|
|
|
6297 |
{
|
|
|
6298 |
caddr_t vprivate = NULL;
|
|
|
6299 |
if (pip) {
|
|
|
6300 |
vprivate = MDI_PI(pip)->pi_vprivate;
|
|
|
6301 |
}
|
|
|
6302 |
return (vprivate);
|
|
|
6303 |
}
|
|
|
6304 |
|
|
|
6305 |
/*
|
|
|
6306 |
* mdi_pi_set_vhci_private():
|
|
|
6307 |
* Set the vhci private information in the mdi_pathinfo node
|
|
|
6308 |
*/
|
|
|
6309 |
void
|
|
|
6310 |
mdi_pi_set_vhci_private(mdi_pathinfo_t *pip, void *priv)
|
|
|
6311 |
{
|
|
|
6312 |
if (pip) {
|
|
|
6313 |
MDI_PI(pip)->pi_vprivate = priv;
|
|
|
6314 |
}
|
|
|
6315 |
}
|
|
|
6316 |
|
|
|
6317 |
/*
|
|
|
6318 |
* mdi_phci_get_vhci_private():
|
|
|
6319 |
* Get the vhci private information associated with the
|
|
|
6320 |
* mdi_phci node
|
|
|
6321 |
*/
|
|
|
6322 |
void *
|
|
|
6323 |
mdi_phci_get_vhci_private(dev_info_t *dip)
|
|
|
6324 |
{
|
|
|
6325 |
ASSERT(mdi_component_is_phci(dip, NULL) == MDI_SUCCESS);
|
|
|
6326 |
if (mdi_component_is_phci(dip, NULL) == MDI_SUCCESS) {
|
|
|
6327 |
mdi_phci_t *ph;
|
|
|
6328 |
ph = i_devi_get_phci(dip);
|
|
|
6329 |
return (ph->ph_vprivate);
|
|
|
6330 |
}
|
|
|
6331 |
return (NULL);
|
|
|
6332 |
}
|
|
|
6333 |
|
|
|
6334 |
/*
|
|
|
6335 |
* mdi_phci_set_vhci_private():
|
|
|
6336 |
* Set the vhci private information in the mdi_phci node
|
|
|
6337 |
*/
|
|
|
6338 |
void
|
|
|
6339 |
mdi_phci_set_vhci_private(dev_info_t *dip, void *priv)
|
|
|
6340 |
{
|
|
|
6341 |
ASSERT(mdi_component_is_phci(dip, NULL) == MDI_SUCCESS);
|
|
|
6342 |
if (mdi_component_is_phci(dip, NULL) == MDI_SUCCESS) {
|
|
|
6343 |
mdi_phci_t *ph;
|
|
|
6344 |
ph = i_devi_get_phci(dip);
|
|
|
6345 |
ph->ph_vprivate = priv;
|
|
|
6346 |
}
|
|
|
6347 |
}
|
|
878
|
6348 |
|
|
|
6349 |
/*
|
|
|
6350 |
* List of vhci class names:
|
|
|
6351 |
* A vhci class name must be in this list only if the corresponding vhci
|
|
|
6352 |
* driver intends to use the mdi provided bus config implementation
|
|
|
6353 |
* (i.e., mdi_vhci_bus_config()).
|
|
|
6354 |
*/
|
|
|
6355 |
static char *vhci_class_list[] = { MDI_HCI_CLASS_SCSI, MDI_HCI_CLASS_IB };
|
|
|
6356 |
#define N_VHCI_CLASSES (sizeof (vhci_class_list) / sizeof (char *))
|
|
|
6357 |
|
|
|
6358 |
/*
|
|
|
6359 |
* Built-in list of phci drivers for every vhci class.
|
|
|
6360 |
* All phci drivers expect iscsi have root device support.
|
|
|
6361 |
*/
|
|
|
6362 |
static mdi_phci_driver_info_t scsi_phci_driver_list[] = {
|
|
|
6363 |
{ "fp", 1 },
|
|
|
6364 |
{ "iscsi", 0 },
|
|
|
6365 |
{ "ibsrp", 1 }
|
|
|
6366 |
};
|
|
|
6367 |
|
|
|
6368 |
static mdi_phci_driver_info_t ib_phci_driver_list[] = { "tavor", 1 };
|
|
|
6369 |
|
|
|
6370 |
/*
|
|
|
6371 |
* During boot time, the on-disk vhci cache for every vhci class is read
|
|
|
6372 |
* in the form of an nvlist and stored here.
|
|
|
6373 |
*/
|
|
|
6374 |
static nvlist_t *vhcache_nvl[N_VHCI_CLASSES];
|
|
|
6375 |
|
|
|
6376 |
/* nvpair names in vhci cache nvlist */
|
|
|
6377 |
#define MDI_VHCI_CACHE_VERSION 1
|
|
|
6378 |
#define MDI_NVPNAME_VERSION "version"
|
|
|
6379 |
#define MDI_NVPNAME_PHCIS "phcis"
|
|
|
6380 |
#define MDI_NVPNAME_CTADDRMAP "clientaddrmap"
|
|
|
6381 |
|
|
|
6382 |
typedef enum {
|
|
|
6383 |
VHCACHE_NOT_REBUILT,
|
|
|
6384 |
VHCACHE_PARTIALLY_BUILT,
|
|
|
6385 |
VHCACHE_FULLY_BUILT
|
|
|
6386 |
} vhcache_build_status_t;
|
|
|
6387 |
|
|
|
6388 |
/*
|
|
|
6389 |
* Given vhci class name, return its on-disk vhci cache filename.
|
|
|
6390 |
* Memory for the returned filename which includes the full path is allocated
|
|
|
6391 |
* by this function.
|
|
|
6392 |
*/
|
|
|
6393 |
static char *
|
|
|
6394 |
vhclass2vhcache_filename(char *vhclass)
|
|
|
6395 |
{
|
|
|
6396 |
char *filename;
|
|
|
6397 |
int len;
|
|
|
6398 |
static char *fmt = "/etc/devices/mdi_%s_cache";
|
|
|
6399 |
|
|
|
6400 |
/*
|
|
|
6401 |
* fmt contains the on-disk vhci cache file name format;
|
|
|
6402 |
* for scsi_vhci the filename is "/etc/devices/mdi_scsi_vhci_cache".
|
|
|
6403 |
*/
|
|
|
6404 |
|
|
|
6405 |
/* the -1 below is to account for "%s" in the format string */
|
|
|
6406 |
len = strlen(fmt) + strlen(vhclass) - 1;
|
|
|
6407 |
filename = kmem_alloc(len, KM_SLEEP);
|
|
|
6408 |
(void) snprintf(filename, len, fmt, vhclass);
|
|
|
6409 |
ASSERT(len == (strlen(filename) + 1));
|
|
|
6410 |
return (filename);
|
|
|
6411 |
}
|
|
|
6412 |
|
|
|
6413 |
/*
|
|
|
6414 |
* initialize the vhci cache related data structures and read the on-disk
|
|
|
6415 |
* vhci cached data into memory.
|
|
|
6416 |
*/
|
|
|
6417 |
static void
|
|
|
6418 |
setup_vhci_cache(mdi_vhci_t *vh)
|
|
|
6419 |
{
|
|
|
6420 |
mdi_vhci_config_t *vhc;
|
|
|
6421 |
mdi_vhci_cache_t *vhcache;
|
|
|
6422 |
int i;
|
|
|
6423 |
nvlist_t *nvl = NULL;
|
|
|
6424 |
|
|
|
6425 |
vhc = kmem_zalloc(sizeof (mdi_vhci_config_t), KM_SLEEP);
|
|
|
6426 |
vh->vh_config = vhc;
|
|
|
6427 |
vhcache = &vhc->vhc_vhcache;
|
|
|
6428 |
|
|
|
6429 |
vhc->vhc_vhcache_filename = vhclass2vhcache_filename(vh->vh_class);
|
|
|
6430 |
|
|
|
6431 |
mutex_init(&vhc->vhc_lock, NULL, MUTEX_DEFAULT, NULL);
|
|
|
6432 |
cv_init(&vhc->vhc_cv, NULL, CV_DRIVER, NULL);
|
|
|
6433 |
|
|
|
6434 |
rw_init(&vhcache->vhcache_lock, NULL, RW_DRIVER, NULL);
|
|
|
6435 |
|
|
|
6436 |
/*
|
|
|
6437 |
* Create string hash; same as mod_hash_create_strhash() except that
|
|
|
6438 |
* we use NULL key destructor.
|
|
|
6439 |
*/
|
|
|
6440 |
vhcache->vhcache_client_hash = mod_hash_create_extended(vh->vh_class,
|
|
|
6441 |
mdi_bus_config_cache_hash_size,
|
|
|
6442 |
mod_hash_null_keydtor, mod_hash_null_valdtor,
|
|
|
6443 |
mod_hash_bystr, NULL, mod_hash_strkey_cmp, KM_SLEEP);
|
|
|
6444 |
|
|
|
6445 |
setup_phci_driver_list(vh);
|
|
|
6446 |
|
|
|
6447 |
/*
|
|
|
6448 |
* The on-disk vhci cache is read during booting prior to the
|
|
|
6449 |
* lights-out period by mdi_read_devices_files().
|
|
|
6450 |
*/
|
|
|
6451 |
for (i = 0; i < N_VHCI_CLASSES; i++) {
|
|
|
6452 |
if (strcmp(vhci_class_list[i], vh->vh_class) == 0) {
|
|
|
6453 |
nvl = vhcache_nvl[i];
|
|
|
6454 |
vhcache_nvl[i] = NULL;
|
|
|
6455 |
break;
|
|
|
6456 |
}
|
|
|
6457 |
}
|
|
|
6458 |
|
|
|
6459 |
/*
|
|
|
6460 |
* this is to cover the case of some one manually causing unloading
|
|
|
6461 |
* (or detaching) and reloading (or attaching) of a vhci driver.
|
|
|
6462 |
*/
|
|
|
6463 |
if (nvl == NULL && modrootloaded)
|
|
|
6464 |
nvl = read_on_disk_vhci_cache(vh->vh_class);
|
|
|
6465 |
|
|
|
6466 |
if (nvl != NULL) {
|
|
|
6467 |
rw_enter(&vhcache->vhcache_lock, RW_WRITER);
|
|
|
6468 |
if (mainnvl_to_vhcache(vhcache, nvl) == MDI_SUCCESS)
|
|
|
6469 |
vhcache->vhcache_flags |= MDI_VHCI_CACHE_SETUP_DONE;
|
|
|
6470 |
else {
|
|
|
6471 |
cmn_err(CE_WARN,
|
|
|
6472 |
"%s: data file corrupted, will recreate\n",
|
|
|
6473 |
vhc->vhc_vhcache_filename);
|
|
|
6474 |
}
|
|
|
6475 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
6476 |
nvlist_free(nvl);
|
|
|
6477 |
}
|
|
|
6478 |
|
|
|
6479 |
vhc->vhc_cbid = callb_add(stop_vhcache_flush_thread, vhc,
|
|
|
6480 |
CB_CL_UADMIN_PRE_VFS, "mdi_vhcache_flush");
|
|
|
6481 |
}
|
|
|
6482 |
|
|
|
6483 |
/*
|
|
|
6484 |
* free all vhci cache related resources
|
|
|
6485 |
*/
|
|
|
6486 |
static int
|
|
|
6487 |
destroy_vhci_cache(mdi_vhci_t *vh)
|
|
|
6488 |
{
|
|
|
6489 |
mdi_vhci_config_t *vhc = vh->vh_config;
|
|
|
6490 |
mdi_vhci_cache_t *vhcache = &vhc->vhc_vhcache;
|
|
|
6491 |
mdi_vhcache_phci_t *cphci, *cphci_next;
|
|
|
6492 |
mdi_vhcache_client_t *cct, *cct_next;
|
|
|
6493 |
mdi_vhcache_pathinfo_t *cpi, *cpi_next;
|
|
|
6494 |
|
|
|
6495 |
if (stop_vhcache_async_threads(vhc) != MDI_SUCCESS)
|
|
|
6496 |
return (MDI_FAILURE);
|
|
|
6497 |
|
|
|
6498 |
kmem_free(vhc->vhc_vhcache_filename,
|
|
|
6499 |
strlen(vhc->vhc_vhcache_filename) + 1);
|
|
|
6500 |
|
|
|
6501 |
if (vhc->vhc_phci_driver_list)
|
|
|
6502 |
free_phci_driver_list(vhc);
|
|
|
6503 |
|
|
|
6504 |
mod_hash_destroy_strhash(vhcache->vhcache_client_hash);
|
|
|
6505 |
|
|
|
6506 |
for (cphci = vhcache->vhcache_phci_head; cphci != NULL;
|
|
|
6507 |
cphci = cphci_next) {
|
|
|
6508 |
cphci_next = cphci->cphci_next;
|
|
|
6509 |
free_vhcache_phci(cphci);
|
|
|
6510 |
}
|
|
|
6511 |
|
|
|
6512 |
for (cct = vhcache->vhcache_client_head; cct != NULL; cct = cct_next) {
|
|
|
6513 |
cct_next = cct->cct_next;
|
|
|
6514 |
for (cpi = cct->cct_cpi_head; cpi != NULL; cpi = cpi_next) {
|
|
|
6515 |
cpi_next = cpi->cpi_next;
|
|
|
6516 |
free_vhcache_pathinfo(cpi);
|
|
|
6517 |
}
|
|
|
6518 |
free_vhcache_client(cct);
|
|
|
6519 |
}
|
|
|
6520 |
|
|
|
6521 |
rw_destroy(&vhcache->vhcache_lock);
|
|
|
6522 |
|
|
|
6523 |
mutex_destroy(&vhc->vhc_lock);
|
|
|
6524 |
cv_destroy(&vhc->vhc_cv);
|
|
|
6525 |
kmem_free(vhc, sizeof (mdi_vhci_config_t));
|
|
|
6526 |
return (MDI_SUCCESS);
|
|
|
6527 |
}
|
|
|
6528 |
|
|
|
6529 |
/*
|
|
|
6530 |
* Setup the list of phci drivers associated with the specified vhci class.
|
|
|
6531 |
* MDI uses this information to rebuild bus config cache if in case the
|
|
|
6532 |
* cache is not available or corrupted.
|
|
|
6533 |
*/
|
|
|
6534 |
static void
|
|
|
6535 |
setup_phci_driver_list(mdi_vhci_t *vh)
|
|
|
6536 |
{
|
|
|
6537 |
mdi_vhci_config_t *vhc = vh->vh_config;
|
|
|
6538 |
mdi_phci_driver_info_t *driver_list;
|
|
|
6539 |
char **driver_list1;
|
|
|
6540 |
uint_t ndrivers, ndrivers1;
|
|
|
6541 |
int i, j;
|
|
|
6542 |
|
|
|
6543 |
if (strcmp(vh->vh_class, MDI_HCI_CLASS_SCSI) == 0) {
|
|
|
6544 |
driver_list = scsi_phci_driver_list;
|
|
|
6545 |
ndrivers = sizeof (scsi_phci_driver_list) /
|
|
|
6546 |
sizeof (mdi_phci_driver_info_t);
|
|
|
6547 |
} else if (strcmp(vh->vh_class, MDI_HCI_CLASS_IB) == 0) {
|
|
|
6548 |
driver_list = ib_phci_driver_list;
|
|
|
6549 |
ndrivers = sizeof (ib_phci_driver_list) /
|
|
|
6550 |
sizeof (mdi_phci_driver_info_t);
|
|
|
6551 |
} else {
|
|
|
6552 |
driver_list = NULL;
|
|
|
6553 |
ndrivers = 0;
|
|
|
6554 |
}
|
|
|
6555 |
|
|
|
6556 |
/*
|
|
|
6557 |
* The driver.conf file of a vhci driver can specify additional
|
|
|
6558 |
* phci drivers using a project private "phci-drivers" property.
|
|
|
6559 |
*/
|
|
|
6560 |
if (ddi_prop_lookup_string_array(DDI_DEV_T_ANY, vh->vh_dip,
|
|
|
6561 |
DDI_PROP_DONTPASS, "phci-drivers", &driver_list1,
|
|
|
6562 |
&ndrivers1) != DDI_PROP_SUCCESS)
|
|
|
6563 |
ndrivers1 = 0;
|
|
|
6564 |
|
|
|
6565 |
vhc->vhc_nphci_drivers = ndrivers + ndrivers1;
|
|
|
6566 |
if (vhc->vhc_nphci_drivers == 0)
|
|
|
6567 |
return;
|
|
|
6568 |
|
|
|
6569 |
vhc->vhc_phci_driver_list = kmem_alloc(
|
|
|
6570 |
sizeof (mdi_phci_driver_info_t) * vhc->vhc_nphci_drivers, KM_SLEEP);
|
|
|
6571 |
|
|
|
6572 |
for (i = 0; i < ndrivers; i++) {
|
|
|
6573 |
vhc->vhc_phci_driver_list[i].phdriver_name =
|
|
|
6574 |
i_ddi_strdup(driver_list[i].phdriver_name, KM_SLEEP);
|
|
|
6575 |
vhc->vhc_phci_driver_list[i].phdriver_root_support =
|
|
|
6576 |
driver_list[i].phdriver_root_support;
|
|
|
6577 |
}
|
|
|
6578 |
|
|
|
6579 |
for (j = 0; j < ndrivers1; j++, i++) {
|
|
|
6580 |
vhc->vhc_phci_driver_list[i].phdriver_name =
|
|
|
6581 |
i_ddi_strdup(driver_list1[j], KM_SLEEP);
|
|
|
6582 |
vhc->vhc_phci_driver_list[i].phdriver_root_support = 1;
|
|
|
6583 |
}
|
|
|
6584 |
|
|
|
6585 |
if (ndrivers1)
|
|
|
6586 |
ddi_prop_free(driver_list1);
|
|
|
6587 |
}
|
|
|
6588 |
|
|
|
6589 |
/*
|
|
|
6590 |
* Free the memory allocated for the phci driver list
|
|
|
6591 |
*/
|
|
|
6592 |
static void
|
|
|
6593 |
free_phci_driver_list(mdi_vhci_config_t *vhc)
|
|
|
6594 |
{
|
|
|
6595 |
int i;
|
|
|
6596 |
|
|
|
6597 |
if (vhc->vhc_phci_driver_list == NULL)
|
|
|
6598 |
return;
|
|
|
6599 |
|
|
|
6600 |
for (i = 0; i < vhc->vhc_nphci_drivers; i++) {
|
|
|
6601 |
kmem_free(vhc->vhc_phci_driver_list[i].phdriver_name,
|
|
|
6602 |
strlen(vhc->vhc_phci_driver_list[i].phdriver_name) + 1);
|
|
|
6603 |
}
|
|
|
6604 |
|
|
|
6605 |
kmem_free(vhc->vhc_phci_driver_list,
|
|
|
6606 |
sizeof (mdi_phci_driver_info_t) * vhc->vhc_nphci_drivers);
|
|
|
6607 |
}
|
|
|
6608 |
|
|
|
6609 |
/*
|
|
|
6610 |
* Stop all vhci cache related async threads and free their resources.
|
|
|
6611 |
*/
|
|
|
6612 |
static int
|
|
|
6613 |
stop_vhcache_async_threads(mdi_vhci_config_t *vhc)
|
|
|
6614 |
{
|
|
|
6615 |
mdi_async_client_config_t *acc, *acc_next;
|
|
|
6616 |
|
|
|
6617 |
mutex_enter(&vhc->vhc_lock);
|
|
|
6618 |
vhc->vhc_flags |= MDI_VHC_EXIT;
|
|
|
6619 |
ASSERT(vhc->vhc_acc_thrcount >= 0);
|
|
|
6620 |
cv_broadcast(&vhc->vhc_cv);
|
|
|
6621 |
|
|
|
6622 |
while ((vhc->vhc_flags & MDI_VHC_VHCACHE_FLUSH_THREAD) ||
|
|
|
6623 |
(vhc->vhc_flags & MDI_VHC_BUILD_VHCI_CACHE_THREAD) ||
|
|
|
6624 |
vhc->vhc_acc_thrcount != 0) {
|
|
|
6625 |
mutex_exit(&vhc->vhc_lock);
|
|
|
6626 |
delay(1);
|
|
|
6627 |
mutex_enter(&vhc->vhc_lock);
|
|
|
6628 |
}
|
|
|
6629 |
|
|
|
6630 |
vhc->vhc_flags &= ~MDI_VHC_EXIT;
|
|
|
6631 |
|
|
|
6632 |
for (acc = vhc->vhc_acc_list_head; acc != NULL; acc = acc_next) {
|
|
|
6633 |
acc_next = acc->acc_next;
|
|
|
6634 |
free_async_client_config(acc);
|
|
|
6635 |
}
|
|
|
6636 |
vhc->vhc_acc_list_head = NULL;
|
|
|
6637 |
vhc->vhc_acc_list_tail = NULL;
|
|
|
6638 |
vhc->vhc_acc_count = 0;
|
|
|
6639 |
|
|
|
6640 |
if (vhc->vhc_flags & MDI_VHC_VHCACHE_DIRTY) {
|
|
|
6641 |
vhc->vhc_flags &= ~MDI_VHC_VHCACHE_DIRTY;
|
|
|
6642 |
mutex_exit(&vhc->vhc_lock);
|
|
|
6643 |
if (flush_vhcache(vhc, 0) != MDI_SUCCESS) {
|
|
|
6644 |
vhcache_dirty(vhc);
|
|
|
6645 |
return (MDI_FAILURE);
|
|
|
6646 |
}
|
|
|
6647 |
} else
|
|
|
6648 |
mutex_exit(&vhc->vhc_lock);
|
|
|
6649 |
|
|
|
6650 |
if (callb_delete(vhc->vhc_cbid) != 0)
|
|
|
6651 |
return (MDI_FAILURE);
|
|
|
6652 |
|
|
|
6653 |
return (MDI_SUCCESS);
|
|
|
6654 |
}
|
|
|
6655 |
|
|
|
6656 |
/*
|
|
|
6657 |
* Stop vhci cache flush thread
|
|
|
6658 |
*/
|
|
|
6659 |
/* ARGSUSED */
|
|
|
6660 |
static boolean_t
|
|
|
6661 |
stop_vhcache_flush_thread(void *arg, int code)
|
|
|
6662 |
{
|
|
|
6663 |
mdi_vhci_config_t *vhc = (mdi_vhci_config_t *)arg;
|
|
|
6664 |
|
|
|
6665 |
mutex_enter(&vhc->vhc_lock);
|
|
|
6666 |
vhc->vhc_flags |= MDI_VHC_EXIT;
|
|
|
6667 |
cv_broadcast(&vhc->vhc_cv);
|
|
|
6668 |
|
|
|
6669 |
while (vhc->vhc_flags & MDI_VHC_VHCACHE_FLUSH_THREAD) {
|
|
|
6670 |
mutex_exit(&vhc->vhc_lock);
|
|
|
6671 |
delay(1);
|
|
|
6672 |
mutex_enter(&vhc->vhc_lock);
|
|
|
6673 |
}
|
|
|
6674 |
|
|
|
6675 |
if (vhc->vhc_flags & MDI_VHC_VHCACHE_DIRTY) {
|
|
|
6676 |
vhc->vhc_flags &= ~MDI_VHC_VHCACHE_DIRTY;
|
|
|
6677 |
mutex_exit(&vhc->vhc_lock);
|
|
|
6678 |
(void) flush_vhcache(vhc, 1);
|
|
|
6679 |
} else
|
|
|
6680 |
mutex_exit(&vhc->vhc_lock);
|
|
|
6681 |
|
|
|
6682 |
return (B_TRUE);
|
|
|
6683 |
}
|
|
|
6684 |
|
|
|
6685 |
/*
|
|
|
6686 |
* Enqueue the vhcache phci (cphci) at the tail of the list
|
|
|
6687 |
*/
|
|
|
6688 |
static void
|
|
|
6689 |
enqueue_vhcache_phci(mdi_vhci_cache_t *vhcache, mdi_vhcache_phci_t *cphci)
|
|
|
6690 |
{
|
|
|
6691 |
cphci->cphci_next = NULL;
|
|
|
6692 |
if (vhcache->vhcache_phci_head == NULL)
|
|
|
6693 |
vhcache->vhcache_phci_head = cphci;
|
|
|
6694 |
else
|
|
|
6695 |
vhcache->vhcache_phci_tail->cphci_next = cphci;
|
|
|
6696 |
vhcache->vhcache_phci_tail = cphci;
|
|
|
6697 |
}
|
|
|
6698 |
|
|
|
6699 |
/*
|
|
|
6700 |
* Enqueue the vhcache pathinfo (cpi) at the tail of the list
|
|
|
6701 |
*/
|
|
|
6702 |
static void
|
|
|
6703 |
enqueue_tail_vhcache_pathinfo(mdi_vhcache_client_t *cct,
|
|
|
6704 |
mdi_vhcache_pathinfo_t *cpi)
|
|
|
6705 |
{
|
|
|
6706 |
cpi->cpi_next = NULL;
|
|
|
6707 |
if (cct->cct_cpi_head == NULL)
|
|
|
6708 |
cct->cct_cpi_head = cpi;
|
|
|
6709 |
else
|
|
|
6710 |
cct->cct_cpi_tail->cpi_next = cpi;
|
|
|
6711 |
cct->cct_cpi_tail = cpi;
|
|
|
6712 |
}
|
|
|
6713 |
|
|
|
6714 |
/*
|
|
|
6715 |
* Enqueue the vhcache pathinfo (cpi) at the correct location in the
|
|
|
6716 |
* ordered list. All cpis which do not have MDI_CPI_HINT_PATH_DOES_NOT_EXIST
|
|
|
6717 |
* flag set come at the beginning of the list. All cpis which have this
|
|
|
6718 |
* flag set come at the end of the list.
|
|
|
6719 |
*/
|
|
|
6720 |
static void
|
|
|
6721 |
enqueue_vhcache_pathinfo(mdi_vhcache_client_t *cct,
|
|
|
6722 |
mdi_vhcache_pathinfo_t *newcpi)
|
|
|
6723 |
{
|
|
|
6724 |
mdi_vhcache_pathinfo_t *cpi, *prev_cpi;
|
|
|
6725 |
|
|
|
6726 |
if (cct->cct_cpi_head == NULL ||
|
|
|
6727 |
(newcpi->cpi_flags & MDI_CPI_HINT_PATH_DOES_NOT_EXIST))
|
|
|
6728 |
enqueue_tail_vhcache_pathinfo(cct, newcpi);
|
|
|
6729 |
else {
|
|
|
6730 |
for (cpi = cct->cct_cpi_head, prev_cpi = NULL; cpi != NULL &&
|
|
|
6731 |
!(cpi->cpi_flags & MDI_CPI_HINT_PATH_DOES_NOT_EXIST);
|
|
|
6732 |
prev_cpi = cpi, cpi = cpi->cpi_next)
|
|
|
6733 |
;
|
|
|
6734 |
|
|
|
6735 |
if (prev_cpi == NULL)
|
|
|
6736 |
cct->cct_cpi_head = newcpi;
|
|
|
6737 |
else
|
|
|
6738 |
prev_cpi->cpi_next = newcpi;
|
|
|
6739 |
|
|
|
6740 |
newcpi->cpi_next = cpi;
|
|
|
6741 |
|
|
|
6742 |
if (cpi == NULL)
|
|
|
6743 |
cct->cct_cpi_tail = newcpi;
|
|
|
6744 |
}
|
|
|
6745 |
}
|
|
|
6746 |
|
|
|
6747 |
/*
|
|
|
6748 |
* Enqueue the vhcache client (cct) at the tail of the list
|
|
|
6749 |
*/
|
|
|
6750 |
static void
|
|
|
6751 |
enqueue_vhcache_client(mdi_vhci_cache_t *vhcache,
|
|
|
6752 |
mdi_vhcache_client_t *cct)
|
|
|
6753 |
{
|
|
|
6754 |
cct->cct_next = NULL;
|
|
|
6755 |
if (vhcache->vhcache_client_head == NULL)
|
|
|
6756 |
vhcache->vhcache_client_head = cct;
|
|
|
6757 |
else
|
|
|
6758 |
vhcache->vhcache_client_tail->cct_next = cct;
|
|
|
6759 |
vhcache->vhcache_client_tail = cct;
|
|
|
6760 |
}
|
|
|
6761 |
|
|
|
6762 |
static void
|
|
|
6763 |
free_string_array(char **str, int nelem)
|
|
|
6764 |
{
|
|
|
6765 |
int i;
|
|
|
6766 |
|
|
|
6767 |
if (str) {
|
|
|
6768 |
for (i = 0; i < nelem; i++) {
|
|
|
6769 |
if (str[i])
|
|
|
6770 |
kmem_free(str[i], strlen(str[i]) + 1);
|
|
|
6771 |
}
|
|
|
6772 |
kmem_free(str, sizeof (char *) * nelem);
|
|
|
6773 |
}
|
|
|
6774 |
}
|
|
|
6775 |
|
|
|
6776 |
static void
|
|
|
6777 |
free_vhcache_phci(mdi_vhcache_phci_t *cphci)
|
|
|
6778 |
{
|
|
|
6779 |
kmem_free(cphci->cphci_path, strlen(cphci->cphci_path) + 1);
|
|
|
6780 |
kmem_free(cphci, sizeof (*cphci));
|
|
|
6781 |
}
|
|
|
6782 |
|
|
|
6783 |
static void
|
|
|
6784 |
free_vhcache_pathinfo(mdi_vhcache_pathinfo_t *cpi)
|
|
|
6785 |
{
|
|
|
6786 |
kmem_free(cpi->cpi_addr, strlen(cpi->cpi_addr) + 1);
|
|
|
6787 |
kmem_free(cpi, sizeof (*cpi));
|
|
|
6788 |
}
|
|
|
6789 |
|
|
|
6790 |
static void
|
|
|
6791 |
free_vhcache_client(mdi_vhcache_client_t *cct)
|
|
|
6792 |
{
|
|
|
6793 |
kmem_free(cct->cct_name_addr, strlen(cct->cct_name_addr) + 1);
|
|
|
6794 |
kmem_free(cct, sizeof (*cct));
|
|
|
6795 |
}
|
|
|
6796 |
|
|
|
6797 |
static char *
|
|
|
6798 |
vhcache_mknameaddr(char *ct_name, char *ct_addr, int *ret_len)
|
|
|
6799 |
{
|
|
|
6800 |
char *name_addr;
|
|
|
6801 |
int len;
|
|
|
6802 |
|
|
|
6803 |
len = strlen(ct_name) + strlen(ct_addr) + 2;
|
|
|
6804 |
name_addr = kmem_alloc(len, KM_SLEEP);
|
|
|
6805 |
(void) snprintf(name_addr, len, "%s@%s", ct_name, ct_addr);
|
|
|
6806 |
|
|
|
6807 |
if (ret_len)
|
|
|
6808 |
*ret_len = len;
|
|
|
6809 |
return (name_addr);
|
|
|
6810 |
}
|
|
|
6811 |
|
|
|
6812 |
/*
|
|
|
6813 |
* Copy the contents of paddrnvl to vhci cache.
|
|
|
6814 |
* paddrnvl nvlist contains path information for a vhci client.
|
|
|
6815 |
* See the comment in mainnvl_to_vhcache() for the format of this nvlist.
|
|
|
6816 |
*/
|
|
|
6817 |
static void
|
|
|
6818 |
paddrnvl_to_vhcache(nvlist_t *nvl, mdi_vhcache_phci_t *cphci_list[],
|
|
|
6819 |
mdi_vhcache_client_t *cct)
|
|
|
6820 |
{
|
|
|
6821 |
nvpair_t *nvp = NULL;
|
|
|
6822 |
mdi_vhcache_pathinfo_t *cpi;
|
|
|
6823 |
uint_t nelem;
|
|
|
6824 |
uint32_t *val;
|
|
|
6825 |
|
|
|
6826 |
while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
|
|
|
6827 |
ASSERT(nvpair_type(nvp) == DATA_TYPE_UINT32_ARRAY);
|
|
|
6828 |
cpi = kmem_zalloc(sizeof (*cpi), KM_SLEEP);
|
|
|
6829 |
cpi->cpi_addr = i_ddi_strdup(nvpair_name(nvp), KM_SLEEP);
|
|
|
6830 |
(void) nvpair_value_uint32_array(nvp, &val, &nelem);
|
|
|
6831 |
ASSERT(nelem == 2);
|
|
|
6832 |
cpi->cpi_cphci = cphci_list[val[0]];
|
|
|
6833 |
cpi->cpi_flags = val[1];
|
|
|
6834 |
enqueue_tail_vhcache_pathinfo(cct, cpi);
|
|
|
6835 |
}
|
|
|
6836 |
}
|
|
|
6837 |
|
|
|
6838 |
/*
|
|
|
6839 |
* Copy the contents of caddrmapnvl to vhci cache.
|
|
|
6840 |
* caddrmapnvl nvlist contains vhci client address to phci client address
|
|
|
6841 |
* mappings. See the comment in mainnvl_to_vhcache() for the format of
|
|
|
6842 |
* this nvlist.
|
|
|
6843 |
*/
|
|
|
6844 |
static void
|
|
|
6845 |
caddrmapnvl_to_vhcache(mdi_vhci_cache_t *vhcache, nvlist_t *nvl,
|
|
|
6846 |
mdi_vhcache_phci_t *cphci_list[])
|
|
|
6847 |
{
|
|
|
6848 |
nvpair_t *nvp = NULL;
|
|
|
6849 |
nvlist_t *paddrnvl;
|
|
|
6850 |
mdi_vhcache_client_t *cct;
|
|
|
6851 |
|
|
|
6852 |
while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
|
|
|
6853 |
ASSERT(nvpair_type(nvp) == DATA_TYPE_NVLIST);
|
|
|
6854 |
cct = kmem_zalloc(sizeof (*cct), KM_SLEEP);
|
|
|
6855 |
cct->cct_name_addr = i_ddi_strdup(nvpair_name(nvp), KM_SLEEP);
|
|
|
6856 |
(void) nvpair_value_nvlist(nvp, &paddrnvl);
|
|
|
6857 |
paddrnvl_to_vhcache(paddrnvl, cphci_list, cct);
|
|
|
6858 |
/* the client must contain at least one path */
|
|
|
6859 |
ASSERT(cct->cct_cpi_head != NULL);
|
|
|
6860 |
|
|
|
6861 |
enqueue_vhcache_client(vhcache, cct);
|
|
|
6862 |
(void) mod_hash_insert(vhcache->vhcache_client_hash,
|
|
|
6863 |
(mod_hash_key_t)cct->cct_name_addr, (mod_hash_val_t)cct);
|
|
|
6864 |
}
|
|
|
6865 |
}
|
|
|
6866 |
|
|
|
6867 |
/*
|
|
|
6868 |
* Copy the contents of the main nvlist to vhci cache.
|
|
|
6869 |
*
|
|
|
6870 |
* VHCI busconfig cached data is stored in the form of a nvlist on the disk.
|
|
|
6871 |
* The nvlist contains the mappings between the vhci client addresses and
|
|
|
6872 |
* their corresponding phci client addresses.
|
|
|
6873 |
*
|
|
|
6874 |
* The structure of the nvlist is as follows:
|
|
|
6875 |
*
|
|
|
6876 |
* Main nvlist:
|
|
|
6877 |
* NAME TYPE DATA
|
|
|
6878 |
* version int32 version number
|
|
|
6879 |
* phcis string array array of phci paths
|
|
|
6880 |
* clientaddrmap nvlist_t c2paddrs_nvl (see below)
|
|
|
6881 |
*
|
|
|
6882 |
* structure of c2paddrs_nvl:
|
|
|
6883 |
* NAME TYPE DATA
|
|
|
6884 |
* caddr1 nvlist_t paddrs_nvl1
|
|
|
6885 |
* caddr2 nvlist_t paddrs_nvl2
|
|
|
6886 |
* ...
|
|
|
6887 |
* where caddr1, caddr2, ... are vhci client name and addresses in the
|
|
|
6888 |
* form of "<clientname>@<clientaddress>".
|
|
|
6889 |
* (for example: "ssd@2000002037cd9f72");
|
|
|
6890 |
* paddrs_nvl1, paddrs_nvl2, .. are nvlists that contain path information.
|
|
|
6891 |
*
|
|
|
6892 |
* structure of paddrs_nvl:
|
|
|
6893 |
* NAME TYPE DATA
|
|
|
6894 |
* pi_addr1 uint32_array (phci-id, cpi_flags)
|
|
|
6895 |
* pi_addr2 uint32_array (phci-id, cpi_flags)
|
|
|
6896 |
* ...
|
|
|
6897 |
* where pi_addr1, pi_addr2, ... are bus specific addresses of pathinfo nodes
|
|
|
6898 |
* (so called pi_addrs, for example: "w2100002037cd9f72,0");
|
|
|
6899 |
* phci-ids are integers that identify PHCIs to which the
|
|
|
6900 |
* the bus specific address belongs to. These integers are used as an index
|
|
|
6901 |
* into to the phcis string array in the main nvlist to get the PHCI path.
|
|
|
6902 |
*/
|
|
|
6903 |
static int
|
|
|
6904 |
mainnvl_to_vhcache(mdi_vhci_cache_t *vhcache, nvlist_t *nvl)
|
|
|
6905 |
{
|
|
|
6906 |
char **phcis, **phci_namep;
|
|
|
6907 |
uint_t nphcis;
|
|
|
6908 |
mdi_vhcache_phci_t *cphci, **cphci_list;
|
|
|
6909 |
nvlist_t *caddrmapnvl;
|
|
|
6910 |
int32_t ver;
|
|
|
6911 |
int i;
|
|
|
6912 |
size_t cphci_list_size;
|
|
|
6913 |
|
|
|
6914 |
ASSERT(RW_WRITE_HELD(&vhcache->vhcache_lock));
|
|
|
6915 |
|
|
|
6916 |
if (nvlist_lookup_int32(nvl, MDI_NVPNAME_VERSION, &ver) != 0 ||
|
|
|
6917 |
ver != MDI_VHCI_CACHE_VERSION)
|
|
|
6918 |
return (MDI_FAILURE);
|
|
|
6919 |
|
|
|
6920 |
if (nvlist_lookup_string_array(nvl, MDI_NVPNAME_PHCIS, &phcis,
|
|
|
6921 |
&nphcis) != 0)
|
|
|
6922 |
return (MDI_SUCCESS);
|
|
|
6923 |
|
|
|
6924 |
ASSERT(nphcis > 0);
|
|
|
6925 |
|
|
|
6926 |
cphci_list_size = sizeof (mdi_vhcache_phci_t *) * nphcis;
|
|
|
6927 |
cphci_list = kmem_alloc(cphci_list_size, KM_SLEEP);
|
|
|
6928 |
for (i = 0, phci_namep = phcis; i < nphcis; i++, phci_namep++) {
|
|
|
6929 |
cphci = kmem_zalloc(sizeof (mdi_vhcache_phci_t), KM_SLEEP);
|
|
|
6930 |
cphci->cphci_path = i_ddi_strdup(*phci_namep, KM_SLEEP);
|
|
|
6931 |
enqueue_vhcache_phci(vhcache, cphci);
|
|
|
6932 |
cphci_list[i] = cphci;
|
|
|
6933 |
}
|
|
|
6934 |
|
|
|
6935 |
ASSERT(vhcache->vhcache_phci_head != NULL);
|
|
|
6936 |
|
|
|
6937 |
if (nvlist_lookup_nvlist(nvl, MDI_NVPNAME_CTADDRMAP, &caddrmapnvl) == 0)
|
|
|
6938 |
caddrmapnvl_to_vhcache(vhcache, caddrmapnvl, cphci_list);
|
|
|
6939 |
|
|
|
6940 |
kmem_free(cphci_list, cphci_list_size);
|
|
|
6941 |
return (MDI_SUCCESS);
|
|
|
6942 |
}
|
|
|
6943 |
|
|
|
6944 |
/*
|
|
|
6945 |
* Build paddrnvl for the specified client using the information in the
|
|
|
6946 |
* vhci cache and add it to the caddrmapnnvl.
|
|
|
6947 |
* Returns 0 on success, errno on failure.
|
|
|
6948 |
*/
|
|
|
6949 |
static int
|
|
|
6950 |
vhcache_to_paddrnvl(mdi_vhci_cache_t *vhcache, mdi_vhcache_client_t *cct,
|
|
|
6951 |
nvlist_t *caddrmapnvl)
|
|
|
6952 |
{
|
|
|
6953 |
mdi_vhcache_pathinfo_t *cpi;
|
|
|
6954 |
nvlist_t *nvl;
|
|
|
6955 |
int err;
|
|
|
6956 |
uint32_t val[2];
|
|
|
6957 |
|
|
|
6958 |
ASSERT(RW_LOCK_HELD(&vhcache->vhcache_lock));
|
|
|
6959 |
|
|
|
6960 |
if ((err = nvlist_alloc(&nvl, 0, KM_SLEEP)) != 0)
|
|
|
6961 |
return (err);
|
|
|
6962 |
|
|
|
6963 |
for (cpi = cct->cct_cpi_head; cpi != NULL; cpi = cpi->cpi_next) {
|
|
|
6964 |
val[0] = cpi->cpi_cphci->cphci_id;
|
|
|
6965 |
val[1] = cpi->cpi_flags;
|
|
|
6966 |
if ((err = nvlist_add_uint32_array(nvl, cpi->cpi_addr, val, 2))
|
|
|
6967 |
!= 0)
|
|
|
6968 |
goto out;
|
|
|
6969 |
}
|
|
|
6970 |
|
|
|
6971 |
err = nvlist_add_nvlist(caddrmapnvl, cct->cct_name_addr, nvl);
|
|
|
6972 |
out:
|
|
|
6973 |
nvlist_free(nvl);
|
|
|
6974 |
return (err);
|
|
|
6975 |
}
|
|
|
6976 |
|
|
|
6977 |
/*
|
|
|
6978 |
* Build caddrmapnvl using the information in the vhci cache
|
|
|
6979 |
* and add it to the mainnvl.
|
|
|
6980 |
* Returns 0 on success, errno on failure.
|
|
|
6981 |
*/
|
|
|
6982 |
static int
|
|
|
6983 |
vhcache_to_caddrmapnvl(mdi_vhci_cache_t *vhcache, nvlist_t *mainnvl)
|
|
|
6984 |
{
|
|
|
6985 |
mdi_vhcache_client_t *cct;
|
|
|
6986 |
nvlist_t *nvl;
|
|
|
6987 |
int err;
|
|
|
6988 |
|
|
|
6989 |
ASSERT(RW_LOCK_HELD(&vhcache->vhcache_lock));
|
|
|
6990 |
|
|
|
6991 |
if ((err = nvlist_alloc(&nvl, NV_UNIQUE_NAME, KM_SLEEP)) != 0)
|
|
|
6992 |
return (err);
|
|
|
6993 |
|
|
|
6994 |
for (cct = vhcache->vhcache_client_head; cct != NULL;
|
|
|
6995 |
cct = cct->cct_next) {
|
|
|
6996 |
if ((err = vhcache_to_paddrnvl(vhcache, cct, nvl)) != 0)
|
|
|
6997 |
goto out;
|
|
|
6998 |
}
|
|
|
6999 |
|
|
|
7000 |
err = nvlist_add_nvlist(mainnvl, MDI_NVPNAME_CTADDRMAP, nvl);
|
|
|
7001 |
out:
|
|
|
7002 |
nvlist_free(nvl);
|
|
|
7003 |
return (err);
|
|
|
7004 |
}
|
|
|
7005 |
|
|
|
7006 |
/*
|
|
|
7007 |
* Build nvlist using the information in the vhci cache.
|
|
|
7008 |
* See the comment in mainnvl_to_vhcache() for the format of the nvlist.
|
|
|
7009 |
* Returns nvl on success, NULL on failure.
|
|
|
7010 |
*/
|
|
|
7011 |
static nvlist_t *
|
|
|
7012 |
vhcache_to_mainnvl(mdi_vhci_cache_t *vhcache)
|
|
|
7013 |
{
|
|
|
7014 |
mdi_vhcache_phci_t *cphci;
|
|
|
7015 |
uint_t phci_count;
|
|
|
7016 |
char **phcis;
|
|
|
7017 |
nvlist_t *nvl;
|
|
|
7018 |
int err, i;
|
|
|
7019 |
|
|
|
7020 |
if ((err = nvlist_alloc(&nvl, NV_UNIQUE_NAME, KM_SLEEP)) != 0) {
|
|
|
7021 |
nvl = NULL;
|
|
|
7022 |
goto out;
|
|
|
7023 |
}
|
|
|
7024 |
|
|
|
7025 |
if ((err = nvlist_add_int32(nvl, MDI_NVPNAME_VERSION,
|
|
|
7026 |
MDI_VHCI_CACHE_VERSION)) != 0)
|
|
|
7027 |
goto out;
|
|
|
7028 |
|
|
|
7029 |
rw_enter(&vhcache->vhcache_lock, RW_READER);
|
|
|
7030 |
if (vhcache->vhcache_phci_head == NULL) {
|
|
|
7031 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7032 |
return (nvl);
|
|
|
7033 |
}
|
|
|
7034 |
|
|
|
7035 |
phci_count = 0;
|
|
|
7036 |
for (cphci = vhcache->vhcache_phci_head; cphci != NULL;
|
|
|
7037 |
cphci = cphci->cphci_next)
|
|
|
7038 |
cphci->cphci_id = phci_count++;
|
|
|
7039 |
|
|
|
7040 |
/* build phci pathname list */
|
|
|
7041 |
phcis = kmem_alloc(sizeof (char *) * phci_count, KM_SLEEP);
|
|
|
7042 |
for (cphci = vhcache->vhcache_phci_head, i = 0; cphci != NULL;
|
|
|
7043 |
cphci = cphci->cphci_next, i++)
|
|
|
7044 |
phcis[i] = i_ddi_strdup(cphci->cphci_path, KM_SLEEP);
|
|
|
7045 |
|
|
|
7046 |
err = nvlist_add_string_array(nvl, MDI_NVPNAME_PHCIS, phcis,
|
|
|
7047 |
phci_count);
|
|
|
7048 |
free_string_array(phcis, phci_count);
|
|
|
7049 |
|
|
|
7050 |
if (err == 0 &&
|
|
|
7051 |
(err = vhcache_to_caddrmapnvl(vhcache, nvl)) == 0) {
|
|
|
7052 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7053 |
return (nvl);
|
|
|
7054 |
}
|
|
|
7055 |
|
|
|
7056 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7057 |
out:
|
|
|
7058 |
if (nvl)
|
|
|
7059 |
nvlist_free(nvl);
|
|
|
7060 |
return (NULL);
|
|
|
7061 |
}
|
|
|
7062 |
|
|
|
7063 |
/*
|
|
|
7064 |
* Lookup vhcache phci structure for the specified phci path.
|
|
|
7065 |
*/
|
|
|
7066 |
static mdi_vhcache_phci_t *
|
|
|
7067 |
lookup_vhcache_phci_by_name(mdi_vhci_cache_t *vhcache, char *phci_path)
|
|
|
7068 |
{
|
|
|
7069 |
mdi_vhcache_phci_t *cphci;
|
|
|
7070 |
|
|
|
7071 |
ASSERT(RW_LOCK_HELD(&vhcache->vhcache_lock));
|
|
|
7072 |
|
|
|
7073 |
for (cphci = vhcache->vhcache_phci_head; cphci != NULL;
|
|
|
7074 |
cphci = cphci->cphci_next) {
|
|
|
7075 |
if (strcmp(cphci->cphci_path, phci_path) == 0)
|
|
|
7076 |
return (cphci);
|
|
|
7077 |
}
|
|
|
7078 |
|
|
|
7079 |
return (NULL);
|
|
|
7080 |
}
|
|
|
7081 |
|
|
|
7082 |
/*
|
|
|
7083 |
* Lookup vhcache phci structure for the specified phci.
|
|
|
7084 |
*/
|
|
|
7085 |
static mdi_vhcache_phci_t *
|
|
|
7086 |
lookup_vhcache_phci_by_addr(mdi_vhci_cache_t *vhcache, mdi_phci_t *ph)
|
|
|
7087 |
{
|
|
|
7088 |
mdi_vhcache_phci_t *cphci;
|
|
|
7089 |
|
|
|
7090 |
ASSERT(RW_LOCK_HELD(&vhcache->vhcache_lock));
|
|
|
7091 |
|
|
|
7092 |
for (cphci = vhcache->vhcache_phci_head; cphci != NULL;
|
|
|
7093 |
cphci = cphci->cphci_next) {
|
|
|
7094 |
if (cphci->cphci_phci == ph)
|
|
|
7095 |
return (cphci);
|
|
|
7096 |
}
|
|
|
7097 |
|
|
|
7098 |
return (NULL);
|
|
|
7099 |
}
|
|
|
7100 |
|
|
|
7101 |
/*
|
|
|
7102 |
* Add the specified phci to the vhci cache if not already present.
|
|
|
7103 |
*/
|
|
|
7104 |
static void
|
|
|
7105 |
vhcache_phci_add(mdi_vhci_config_t *vhc, mdi_phci_t *ph)
|
|
|
7106 |
{
|
|
|
7107 |
mdi_vhci_cache_t *vhcache = &vhc->vhc_vhcache;
|
|
|
7108 |
mdi_vhcache_phci_t *cphci;
|
|
|
7109 |
char *pathname;
|
|
|
7110 |
int cache_updated;
|
|
|
7111 |
|
|
|
7112 |
rw_enter(&vhcache->vhcache_lock, RW_WRITER);
|
|
|
7113 |
|
|
|
7114 |
pathname = kmem_alloc(MAXPATHLEN, KM_SLEEP);
|
|
|
7115 |
(void) ddi_pathname(ph->ph_dip, pathname);
|
|
|
7116 |
if ((cphci = lookup_vhcache_phci_by_name(vhcache, pathname))
|
|
|
7117 |
!= NULL) {
|
|
|
7118 |
cphci->cphci_phci = ph;
|
|
|
7119 |
cache_updated = 0;
|
|
|
7120 |
} else {
|
|
|
7121 |
cphci = kmem_zalloc(sizeof (*cphci), KM_SLEEP);
|
|
|
7122 |
cphci->cphci_path = i_ddi_strdup(pathname, KM_SLEEP);
|
|
|
7123 |
cphci->cphci_phci = ph;
|
|
|
7124 |
enqueue_vhcache_phci(vhcache, cphci);
|
|
|
7125 |
cache_updated = 1;
|
|
|
7126 |
}
|
|
|
7127 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7128 |
|
|
|
7129 |
kmem_free(pathname, MAXPATHLEN);
|
|
|
7130 |
if (cache_updated)
|
|
|
7131 |
vhcache_dirty(vhc);
|
|
|
7132 |
}
|
|
|
7133 |
|
|
|
7134 |
/*
|
|
|
7135 |
* Remove the reference to the specified phci from the vhci cache.
|
|
|
7136 |
*/
|
|
|
7137 |
static void
|
|
|
7138 |
vhcache_phci_remove(mdi_vhci_config_t *vhc, mdi_phci_t *ph)
|
|
|
7139 |
{
|
|
|
7140 |
mdi_vhci_cache_t *vhcache = &vhc->vhc_vhcache;
|
|
|
7141 |
mdi_vhcache_phci_t *cphci;
|
|
|
7142 |
|
|
|
7143 |
rw_enter(&vhcache->vhcache_lock, RW_WRITER);
|
|
|
7144 |
if ((cphci = lookup_vhcache_phci_by_addr(vhcache, ph)) != NULL) {
|
|
|
7145 |
/* do not remove the actual mdi_vhcache_phci structure */
|
|
|
7146 |
cphci->cphci_phci = NULL;
|
|
|
7147 |
}
|
|
|
7148 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7149 |
}
|
|
|
7150 |
|
|
|
7151 |
static void
|
|
|
7152 |
init_vhcache_lookup_token(mdi_vhcache_lookup_token_t *dst,
|
|
|
7153 |
mdi_vhcache_lookup_token_t *src)
|
|
|
7154 |
{
|
|
|
7155 |
if (src == NULL) {
|
|
|
7156 |
dst->lt_cct = NULL;
|
|
|
7157 |
dst->lt_cct_lookup_time = 0;
|
|
|
7158 |
} else {
|
|
|
7159 |
dst->lt_cct = src->lt_cct;
|
|
|
7160 |
dst->lt_cct_lookup_time = src->lt_cct_lookup_time;
|
|
|
7161 |
}
|
|
|
7162 |
}
|
|
|
7163 |
|
|
|
7164 |
/*
|
|
|
7165 |
* Look up vhcache client for the specified client.
|
|
|
7166 |
*/
|
|
|
7167 |
static mdi_vhcache_client_t *
|
|
|
7168 |
lookup_vhcache_client(mdi_vhci_cache_t *vhcache, char *ct_name, char *ct_addr,
|
|
|
7169 |
mdi_vhcache_lookup_token_t *token)
|
|
|
7170 |
{
|
|
|
7171 |
mod_hash_val_t hv;
|
|
|
7172 |
char *name_addr;
|
|
|
7173 |
int len;
|
|
|
7174 |
|
|
|
7175 |
ASSERT(RW_LOCK_HELD(&vhcache->vhcache_lock));
|
|
|
7176 |
|
|
|
7177 |
/*
|
|
|
7178 |
* If no vhcache clean occurred since the last lookup, we can
|
|
|
7179 |
* simply return the cct from the last lookup operation.
|
|
|
7180 |
* It works because ccts are never freed except during the vhcache
|
|
|
7181 |
* cleanup operation.
|
|
|
7182 |
*/
|
|
|
7183 |
if (token != NULL &&
|
|
|
7184 |
vhcache->vhcache_clean_time < token->lt_cct_lookup_time)
|
|
|
7185 |
return (token->lt_cct);
|
|
|
7186 |
|
|
|
7187 |
name_addr = vhcache_mknameaddr(ct_name, ct_addr, &len);
|
|
|
7188 |
if (mod_hash_find(vhcache->vhcache_client_hash,
|
|
|
7189 |
(mod_hash_key_t)name_addr, &hv) == 0) {
|
|
|
7190 |
if (token) {
|
|
|
7191 |
token->lt_cct = (mdi_vhcache_client_t *)hv;
|
|
|
7192 |
token->lt_cct_lookup_time = lbolt64;
|
|
|
7193 |
}
|
|
|
7194 |
} else {
|
|
|
7195 |
if (token) {
|
|
|
7196 |
token->lt_cct = NULL;
|
|
|
7197 |
token->lt_cct_lookup_time = 0;
|
|
|
7198 |
}
|
|
|
7199 |
hv = NULL;
|
|
|
7200 |
}
|
|
|
7201 |
kmem_free(name_addr, len);
|
|
|
7202 |
return ((mdi_vhcache_client_t *)hv);
|
|
|
7203 |
}
|
|
|
7204 |
|
|
|
7205 |
/*
|
|
|
7206 |
* Add the specified path to the vhci cache if not already present.
|
|
|
7207 |
* Also add the vhcache client for the client corresponding to this path
|
|
|
7208 |
* if it doesn't already exist.
|
|
|
7209 |
*/
|
|
|
7210 |
static void
|
|
|
7211 |
vhcache_pi_add(mdi_vhci_config_t *vhc, struct mdi_pathinfo *pip)
|
|
|
7212 |
{
|
|
|
7213 |
mdi_vhci_cache_t *vhcache = &vhc->vhc_vhcache;
|
|
|
7214 |
mdi_vhcache_client_t *cct;
|
|
|
7215 |
mdi_vhcache_pathinfo_t *cpi;
|
|
|
7216 |
mdi_phci_t *ph = pip->pi_phci;
|
|
|
7217 |
mdi_client_t *ct = pip->pi_client;
|
|
|
7218 |
int cache_updated = 0;
|
|
|
7219 |
|
|
|
7220 |
rw_enter(&vhcache->vhcache_lock, RW_WRITER);
|
|
|
7221 |
|
|
|
7222 |
/* if vhcache client for this pip doesn't already exist, add it */
|
|
|
7223 |
if ((cct = lookup_vhcache_client(vhcache, ct->ct_drvname, ct->ct_guid,
|
|
|
7224 |
NULL)) == NULL) {
|
|
|
7225 |
cct = kmem_zalloc(sizeof (*cct), KM_SLEEP);
|
|
|
7226 |
cct->cct_name_addr = vhcache_mknameaddr(ct->ct_drvname,
|
|
|
7227 |
ct->ct_guid, NULL);
|
|
|
7228 |
enqueue_vhcache_client(vhcache, cct);
|
|
|
7229 |
(void) mod_hash_insert(vhcache->vhcache_client_hash,
|
|
|
7230 |
(mod_hash_key_t)cct->cct_name_addr, (mod_hash_val_t)cct);
|
|
|
7231 |
cache_updated = 1;
|
|
|
7232 |
}
|
|
|
7233 |
|
|
|
7234 |
for (cpi = cct->cct_cpi_head; cpi != NULL; cpi = cpi->cpi_next) {
|
|
|
7235 |
if (cpi->cpi_cphci->cphci_phci == ph &&
|
|
|
7236 |
strcmp(cpi->cpi_addr, pip->pi_addr) == 0) {
|
|
|
7237 |
cpi->cpi_pip = pip;
|
|
|
7238 |
if (cpi->cpi_flags & MDI_CPI_HINT_PATH_DOES_NOT_EXIST) {
|
|
|
7239 |
cpi->cpi_flags &=
|
|
|
7240 |
~MDI_CPI_HINT_PATH_DOES_NOT_EXIST;
|
|
|
7241 |
sort_vhcache_paths(cct);
|
|
|
7242 |
cache_updated = 1;
|
|
|
7243 |
}
|
|
|
7244 |
break;
|
|
|
7245 |
}
|
|
|
7246 |
}
|
|
|
7247 |
|
|
|
7248 |
if (cpi == NULL) {
|
|
|
7249 |
cpi = kmem_zalloc(sizeof (*cpi), KM_SLEEP);
|
|
|
7250 |
cpi->cpi_addr = i_ddi_strdup(pip->pi_addr, KM_SLEEP);
|
|
|
7251 |
cpi->cpi_cphci = lookup_vhcache_phci_by_addr(vhcache, ph);
|
|
|
7252 |
ASSERT(cpi->cpi_cphci != NULL);
|
|
|
7253 |
cpi->cpi_pip = pip;
|
|
|
7254 |
enqueue_vhcache_pathinfo(cct, cpi);
|
|
|
7255 |
cache_updated = 1;
|
|
|
7256 |
}
|
|
|
7257 |
|
|
|
7258 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7259 |
|
|
|
7260 |
if (cache_updated)
|
|
|
7261 |
vhcache_dirty(vhc);
|
|
|
7262 |
}
|
|
|
7263 |
|
|
|
7264 |
/*
|
|
|
7265 |
* Remove the reference to the specified path from the vhci cache.
|
|
|
7266 |
*/
|
|
|
7267 |
static void
|
|
|
7268 |
vhcache_pi_remove(mdi_vhci_config_t *vhc, struct mdi_pathinfo *pip)
|
|
|
7269 |
{
|
|
|
7270 |
mdi_vhci_cache_t *vhcache = &vhc->vhc_vhcache;
|
|
|
7271 |
mdi_client_t *ct = pip->pi_client;
|
|
|
7272 |
mdi_vhcache_client_t *cct;
|
|
|
7273 |
mdi_vhcache_pathinfo_t *cpi;
|
|
|
7274 |
|
|
|
7275 |
rw_enter(&vhcache->vhcache_lock, RW_WRITER);
|
|
|
7276 |
if ((cct = lookup_vhcache_client(vhcache, ct->ct_drvname, ct->ct_guid,
|
|
|
7277 |
NULL)) != NULL) {
|
|
|
7278 |
for (cpi = cct->cct_cpi_head; cpi != NULL;
|
|
|
7279 |
cpi = cpi->cpi_next) {
|
|
|
7280 |
if (cpi->cpi_pip == pip) {
|
|
|
7281 |
cpi->cpi_pip = NULL;
|
|
|
7282 |
break;
|
|
|
7283 |
}
|
|
|
7284 |
}
|
|
|
7285 |
}
|
|
|
7286 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7287 |
}
|
|
|
7288 |
|
|
|
7289 |
/*
|
|
|
7290 |
* Flush the vhci cache to disk.
|
|
|
7291 |
* Returns MDI_SUCCESS on success, MDI_FAILURE on failure.
|
|
|
7292 |
*/
|
|
|
7293 |
static int
|
|
|
7294 |
flush_vhcache(mdi_vhci_config_t *vhc, int force_flag)
|
|
|
7295 |
{
|
|
|
7296 |
nvlist_t *nvl;
|
|
|
7297 |
int err;
|
|
|
7298 |
int rv;
|
|
|
7299 |
|
|
|
7300 |
/*
|
|
|
7301 |
* It is possible that the system may shutdown before
|
|
|
7302 |
* i_ddi_io_initialized (during stmsboot for example). To allow for
|
|
|
7303 |
* flushing the cache in this case do not check for
|
|
|
7304 |
* i_ddi_io_initialized when force flag is set.
|
|
|
7305 |
*/
|
|
|
7306 |
if (force_flag == 0 && !i_ddi_io_initialized())
|
|
|
7307 |
return (MDI_FAILURE);
|
|
|
7308 |
|
|
|
7309 |
if ((nvl = vhcache_to_mainnvl(&vhc->vhc_vhcache)) != NULL) {
|
|
|
7310 |
err = fwrite_nvlist(vhc->vhc_vhcache_filename, nvl);
|
|
|
7311 |
nvlist_free(nvl);
|
|
|
7312 |
} else
|
|
|
7313 |
err = EFAULT;
|
|
|
7314 |
|
|
|
7315 |
rv = MDI_SUCCESS;
|
|
|
7316 |
mutex_enter(&vhc->vhc_lock);
|
|
|
7317 |
if (err != 0) {
|
|
|
7318 |
if (err == EROFS) {
|
|
|
7319 |
vhc->vhc_flags |= MDI_VHC_READONLY_FS;
|
|
|
7320 |
vhc->vhc_flags &= ~(MDI_VHC_VHCACHE_FLUSH_ERROR |
|
|
|
7321 |
MDI_VHC_VHCACHE_DIRTY);
|
|
|
7322 |
} else {
|
|
|
7323 |
if (!(vhc->vhc_flags & MDI_VHC_VHCACHE_FLUSH_ERROR)) {
|
|
|
7324 |
cmn_err(CE_CONT, "%s: update failed\n",
|
|
|
7325 |
vhc->vhc_vhcache_filename);
|
|
|
7326 |
vhc->vhc_flags |= MDI_VHC_VHCACHE_FLUSH_ERROR;
|
|
|
7327 |
}
|
|
|
7328 |
rv = MDI_FAILURE;
|
|
|
7329 |
}
|
|
|
7330 |
} else if (vhc->vhc_flags & MDI_VHC_VHCACHE_FLUSH_ERROR) {
|
|
|
7331 |
cmn_err(CE_CONT,
|
|
|
7332 |
"%s: update now ok\n", vhc->vhc_vhcache_filename);
|
|
|
7333 |
vhc->vhc_flags &= ~MDI_VHC_VHCACHE_FLUSH_ERROR;
|
|
|
7334 |
}
|
|
|
7335 |
mutex_exit(&vhc->vhc_lock);
|
|
|
7336 |
|
|
|
7337 |
return (rv);
|
|
|
7338 |
}
|
|
|
7339 |
|
|
|
7340 |
/*
|
|
|
7341 |
* Call flush_vhcache() to flush the vhci cache at the scheduled time.
|
|
|
7342 |
* Exits itself if left idle for the idle timeout period.
|
|
|
7343 |
*/
|
|
|
7344 |
static void
|
|
|
7345 |
vhcache_flush_thread(void *arg)
|
|
|
7346 |
{
|
|
|
7347 |
mdi_vhci_config_t *vhc = (mdi_vhci_config_t *)arg;
|
|
|
7348 |
clock_t idle_time, quit_at_ticks;
|
|
|
7349 |
callb_cpr_t cprinfo;
|
|
|
7350 |
|
|
|
7351 |
/* number of seconds to sleep idle before exiting */
|
|
|
7352 |
idle_time = mdi_vhcache_flush_daemon_idle_time * TICKS_PER_SECOND;
|
|
|
7353 |
|
|
|
7354 |
CALLB_CPR_INIT(&cprinfo, &vhc->vhc_lock, callb_generic_cpr,
|
|
|
7355 |
"mdi_vhcache_flush");
|
|
|
7356 |
mutex_enter(&vhc->vhc_lock);
|
|
|
7357 |
for (; ; ) {
|
|
|
7358 |
while (!(vhc->vhc_flags & MDI_VHC_EXIT) &&
|
|
|
7359 |
(vhc->vhc_flags & MDI_VHC_VHCACHE_DIRTY)) {
|
|
|
7360 |
if (ddi_get_lbolt() < vhc->vhc_flush_at_ticks) {
|
|
|
7361 |
CALLB_CPR_SAFE_BEGIN(&cprinfo);
|
|
|
7362 |
(void) cv_timedwait(&vhc->vhc_cv,
|
|
|
7363 |
&vhc->vhc_lock, vhc->vhc_flush_at_ticks);
|
|
|
7364 |
CALLB_CPR_SAFE_END(&cprinfo, &vhc->vhc_lock);
|
|
|
7365 |
} else {
|
|
|
7366 |
vhc->vhc_flags &= ~MDI_VHC_VHCACHE_DIRTY;
|
|
|
7367 |
mutex_exit(&vhc->vhc_lock);
|
|
|
7368 |
|
|
|
7369 |
if (flush_vhcache(vhc, 0) != MDI_SUCCESS)
|
|
|
7370 |
vhcache_dirty(vhc);
|
|
|
7371 |
|
|
|
7372 |
mutex_enter(&vhc->vhc_lock);
|
|
|
7373 |
}
|
|
|
7374 |
}
|
|
|
7375 |
|
|
|
7376 |
quit_at_ticks = ddi_get_lbolt() + idle_time;
|
|
|
7377 |
|
|
|
7378 |
while (!(vhc->vhc_flags & MDI_VHC_EXIT) &&
|
|
|
7379 |
!(vhc->vhc_flags & MDI_VHC_VHCACHE_DIRTY) &&
|
|
|
7380 |
ddi_get_lbolt() < quit_at_ticks) {
|
|
|
7381 |
CALLB_CPR_SAFE_BEGIN(&cprinfo);
|
|
|
7382 |
(void) cv_timedwait(&vhc->vhc_cv, &vhc->vhc_lock,
|
|
|
7383 |
quit_at_ticks);
|
|
|
7384 |
CALLB_CPR_SAFE_END(&cprinfo, &vhc->vhc_lock);
|
|
|
7385 |
}
|
|
|
7386 |
|
|
|
7387 |
if ((vhc->vhc_flags & MDI_VHC_EXIT) ||
|
|
|
7388 |
!(vhc->vhc_flags & MDI_VHC_VHCACHE_DIRTY))
|
|
|
7389 |
goto out;
|
|
|
7390 |
}
|
|
|
7391 |
|
|
|
7392 |
out:
|
|
|
7393 |
vhc->vhc_flags &= ~MDI_VHC_VHCACHE_FLUSH_THREAD;
|
|
|
7394 |
/* CALLB_CPR_EXIT releases the vhc->vhc_lock */
|
|
|
7395 |
CALLB_CPR_EXIT(&cprinfo);
|
|
|
7396 |
}
|
|
|
7397 |
|
|
|
7398 |
/*
|
|
|
7399 |
* Make vhci cache dirty and schedule flushing by vhcache flush thread.
|
|
|
7400 |
*/
|
|
|
7401 |
static void
|
|
|
7402 |
vhcache_dirty(mdi_vhci_config_t *vhc)
|
|
|
7403 |
{
|
|
|
7404 |
mdi_vhci_cache_t *vhcache = &vhc->vhc_vhcache;
|
|
|
7405 |
int create_thread;
|
|
|
7406 |
|
|
|
7407 |
rw_enter(&vhcache->vhcache_lock, RW_READER);
|
|
|
7408 |
/* do not flush cache until the cache is fully built */
|
|
|
7409 |
if (!(vhcache->vhcache_flags & MDI_VHCI_CACHE_SETUP_DONE)) {
|
|
|
7410 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7411 |
return;
|
|
|
7412 |
}
|
|
|
7413 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7414 |
|
|
|
7415 |
mutex_enter(&vhc->vhc_lock);
|
|
|
7416 |
if (vhc->vhc_flags & MDI_VHC_READONLY_FS) {
|
|
|
7417 |
mutex_exit(&vhc->vhc_lock);
|
|
|
7418 |
return;
|
|
|
7419 |
}
|
|
|
7420 |
|
|
|
7421 |
vhc->vhc_flags |= MDI_VHC_VHCACHE_DIRTY;
|
|
|
7422 |
vhc->vhc_flush_at_ticks = ddi_get_lbolt() +
|
|
|
7423 |
mdi_vhcache_flush_delay * TICKS_PER_SECOND;
|
|
|
7424 |
if (vhc->vhc_flags & MDI_VHC_VHCACHE_FLUSH_THREAD) {
|
|
|
7425 |
cv_broadcast(&vhc->vhc_cv);
|
|
|
7426 |
create_thread = 0;
|
|
|
7427 |
} else {
|
|
|
7428 |
vhc->vhc_flags |= MDI_VHC_VHCACHE_FLUSH_THREAD;
|
|
|
7429 |
create_thread = 1;
|
|
|
7430 |
}
|
|
|
7431 |
mutex_exit(&vhc->vhc_lock);
|
|
|
7432 |
|
|
|
7433 |
if (create_thread)
|
|
|
7434 |
(void) thread_create(NULL, 0, vhcache_flush_thread, vhc,
|
|
|
7435 |
0, &p0, TS_RUN, minclsyspri);
|
|
|
7436 |
}
|
|
|
7437 |
|
|
|
7438 |
/*
|
|
|
7439 |
* phci bus config structure - one for for each phci bus config operation that
|
|
|
7440 |
* we initiate on behalf of a vhci.
|
|
|
7441 |
*/
|
|
|
7442 |
typedef struct mdi_phci_bus_config_s {
|
|
|
7443 |
char *phbc_phci_path;
|
|
|
7444 |
struct mdi_vhci_bus_config_s *phbc_vhbusconfig; /* vhci bus config */
|
|
|
7445 |
struct mdi_phci_bus_config_s *phbc_next;
|
|
|
7446 |
} mdi_phci_bus_config_t;
|
|
|
7447 |
|
|
|
7448 |
/* vhci bus config structure - one for each vhci bus config operation */
|
|
|
7449 |
typedef struct mdi_vhci_bus_config_s {
|
|
|
7450 |
ddi_bus_config_op_t vhbc_op; /* bus config op */
|
|
|
7451 |
major_t vhbc_op_major; /* bus config op major */
|
|
|
7452 |
uint_t vhbc_op_flags; /* bus config op flags */
|
|
|
7453 |
kmutex_t vhbc_lock;
|
|
|
7454 |
kcondvar_t vhbc_cv;
|
|
|
7455 |
int vhbc_thr_count;
|
|
|
7456 |
} mdi_vhci_bus_config_t;
|
|
|
7457 |
|
|
|
7458 |
/*
|
|
|
7459 |
* bus config the specified phci
|
|
|
7460 |
*/
|
|
|
7461 |
static void
|
|
|
7462 |
bus_config_phci(void *arg)
|
|
|
7463 |
{
|
|
|
7464 |
mdi_phci_bus_config_t *phbc = (mdi_phci_bus_config_t *)arg;
|
|
|
7465 |
mdi_vhci_bus_config_t *vhbc = phbc->phbc_vhbusconfig;
|
|
|
7466 |
dev_info_t *ph_dip;
|
|
|
7467 |
|
|
|
7468 |
/*
|
|
|
7469 |
* first configure all path components upto phci and then configure
|
|
|
7470 |
* the phci children.
|
|
|
7471 |
*/
|
|
|
7472 |
if ((ph_dip = e_ddi_hold_devi_by_path(phbc->phbc_phci_path, 0))
|
|
|
7473 |
!= NULL) {
|
|
|
7474 |
if (vhbc->vhbc_op == BUS_CONFIG_DRIVER ||
|
|
|
7475 |
vhbc->vhbc_op == BUS_UNCONFIG_DRIVER) {
|
|
|
7476 |
(void) ndi_devi_config_driver(ph_dip,
|
|
|
7477 |
vhbc->vhbc_op_flags,
|
|
|
7478 |
vhbc->vhbc_op_major);
|
|
|
7479 |
} else
|
|
|
7480 |
(void) ndi_devi_config(ph_dip,
|
|
|
7481 |
vhbc->vhbc_op_flags);
|
|
|
7482 |
|
|
|
7483 |
/* release the hold that e_ddi_hold_devi_by_path() placed */
|
|
|
7484 |
ndi_rele_devi(ph_dip);
|
|
|
7485 |
}
|
|
|
7486 |
|
|
|
7487 |
kmem_free(phbc->phbc_phci_path, strlen(phbc->phbc_phci_path) + 1);
|
|
|
7488 |
kmem_free(phbc, sizeof (*phbc));
|
|
|
7489 |
|
|
|
7490 |
mutex_enter(&vhbc->vhbc_lock);
|
|
|
7491 |
vhbc->vhbc_thr_count--;
|
|
|
7492 |
if (vhbc->vhbc_thr_count == 0)
|
|
|
7493 |
cv_broadcast(&vhbc->vhbc_cv);
|
|
|
7494 |
mutex_exit(&vhbc->vhbc_lock);
|
|
|
7495 |
}
|
|
|
7496 |
|
|
|
7497 |
/*
|
|
|
7498 |
* Bus config all phcis associated with the vhci in parallel.
|
|
|
7499 |
* op must be BUS_CONFIG_DRIVER or BUS_CONFIG_ALL.
|
|
|
7500 |
*/
|
|
|
7501 |
static void
|
|
|
7502 |
bus_config_all_phcis(mdi_vhci_cache_t *vhcache, uint_t flags,
|
|
|
7503 |
ddi_bus_config_op_t op, major_t maj)
|
|
|
7504 |
{
|
|
|
7505 |
mdi_phci_bus_config_t *phbc_head = NULL, *phbc, *phbc_next;
|
|
|
7506 |
mdi_vhci_bus_config_t *vhbc;
|
|
|
7507 |
mdi_vhcache_phci_t *cphci;
|
|
|
7508 |
|
|
|
7509 |
rw_enter(&vhcache->vhcache_lock, RW_READER);
|
|
|
7510 |
if (vhcache->vhcache_phci_head == NULL) {
|
|
|
7511 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7512 |
return;
|
|
|
7513 |
}
|
|
|
7514 |
|
|
|
7515 |
vhbc = kmem_zalloc(sizeof (*vhbc), KM_SLEEP);
|
|
|
7516 |
|
|
|
7517 |
for (cphci = vhcache->vhcache_phci_head; cphci != NULL;
|
|
|
7518 |
cphci = cphci->cphci_next) {
|
|
|
7519 |
phbc = kmem_zalloc(sizeof (*phbc), KM_SLEEP);
|
|
|
7520 |
phbc->phbc_phci_path = i_ddi_strdup(cphci->cphci_path,
|
|
|
7521 |
KM_SLEEP);
|
|
|
7522 |
phbc->phbc_vhbusconfig = vhbc;
|
|
|
7523 |
phbc->phbc_next = phbc_head;
|
|
|
7524 |
phbc_head = phbc;
|
|
|
7525 |
vhbc->vhbc_thr_count++;
|
|
|
7526 |
}
|
|
|
7527 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7528 |
|
|
|
7529 |
vhbc->vhbc_op = op;
|
|
|
7530 |
vhbc->vhbc_op_major = maj;
|
|
|
7531 |
vhbc->vhbc_op_flags = NDI_NO_EVENT |
|
|
|
7532 |
(flags & (NDI_CONFIG_REPROBE | NDI_DRV_CONF_REPROBE));
|
|
|
7533 |
mutex_init(&vhbc->vhbc_lock, NULL, MUTEX_DEFAULT, NULL);
|
|
|
7534 |
cv_init(&vhbc->vhbc_cv, NULL, CV_DRIVER, NULL);
|
|
|
7535 |
|
|
|
7536 |
/* now create threads to initiate bus config on all phcis in parallel */
|
|
|
7537 |
for (phbc = phbc_head; phbc != NULL; phbc = phbc_next) {
|
|
|
7538 |
phbc_next = phbc->phbc_next;
|
|
|
7539 |
if (mdi_mtc_off)
|
|
|
7540 |
bus_config_phci((void *)phbc);
|
|
|
7541 |
else
|
|
|
7542 |
(void) thread_create(NULL, 0, bus_config_phci, phbc,
|
|
|
7543 |
0, &p0, TS_RUN, minclsyspri);
|
|
|
7544 |
}
|
|
|
7545 |
|
|
|
7546 |
mutex_enter(&vhbc->vhbc_lock);
|
|
|
7547 |
/* wait until all threads exit */
|
|
|
7548 |
while (vhbc->vhbc_thr_count > 0)
|
|
|
7549 |
cv_wait(&vhbc->vhbc_cv, &vhbc->vhbc_lock);
|
|
|
7550 |
mutex_exit(&vhbc->vhbc_lock);
|
|
|
7551 |
|
|
|
7552 |
mutex_destroy(&vhbc->vhbc_lock);
|
|
|
7553 |
cv_destroy(&vhbc->vhbc_cv);
|
|
|
7554 |
kmem_free(vhbc, sizeof (*vhbc));
|
|
|
7555 |
}
|
|
|
7556 |
|
|
|
7557 |
/*
|
|
|
7558 |
* Perform BUS_CONFIG_ONE on the specified child of the phci.
|
|
|
7559 |
* The path includes the child component in addition to the phci path.
|
|
|
7560 |
*/
|
|
|
7561 |
static int
|
|
|
7562 |
bus_config_one_phci_child(char *path)
|
|
|
7563 |
{
|
|
|
7564 |
dev_info_t *ph_dip, *child;
|
|
|
7565 |
char *devnm;
|
|
|
7566 |
int rv = MDI_FAILURE;
|
|
|
7567 |
|
|
|
7568 |
/* extract the child component of the phci */
|
|
|
7569 |
devnm = strrchr(path, '/');
|
|
|
7570 |
*devnm++ = '\0';
|
|
|
7571 |
|
|
|
7572 |
/*
|
|
|
7573 |
* first configure all path components upto phci and then
|
|
|
7574 |
* configure the phci child.
|
|
|
7575 |
*/
|
|
|
7576 |
if ((ph_dip = e_ddi_hold_devi_by_path(path, 0)) != NULL) {
|
|
|
7577 |
if (ndi_devi_config_one(ph_dip, devnm, &child, NDI_NO_EVENT) ==
|
|
|
7578 |
NDI_SUCCESS) {
|
|
|
7579 |
/*
|
|
|
7580 |
* release the hold that ndi_devi_config_one() placed
|
|
|
7581 |
*/
|
|
|
7582 |
ndi_rele_devi(child);
|
|
|
7583 |
rv = MDI_SUCCESS;
|
|
|
7584 |
}
|
|
|
7585 |
|
|
|
7586 |
/* release the hold that e_ddi_hold_devi_by_path() placed */
|
|
|
7587 |
ndi_rele_devi(ph_dip);
|
|
|
7588 |
}
|
|
|
7589 |
|
|
|
7590 |
devnm--;
|
|
|
7591 |
*devnm = '/';
|
|
|
7592 |
return (rv);
|
|
|
7593 |
}
|
|
|
7594 |
|
|
|
7595 |
/*
|
|
|
7596 |
* Build a list of phci client paths for the specified vhci client.
|
|
|
7597 |
* The list includes only those phci client paths which aren't configured yet.
|
|
|
7598 |
*/
|
|
|
7599 |
static mdi_phys_path_t *
|
|
|
7600 |
build_phclient_path_list(mdi_vhcache_client_t *cct, char *ct_name)
|
|
|
7601 |
{
|
|
|
7602 |
mdi_vhcache_pathinfo_t *cpi;
|
|
|
7603 |
mdi_phys_path_t *pp_head = NULL, *pp_tail = NULL, *pp;
|
|
|
7604 |
int config_path, len;
|
|
|
7605 |
|
|
|
7606 |
for (cpi = cct->cct_cpi_head; cpi != NULL; cpi = cpi->cpi_next) {
|
|
|
7607 |
/*
|
|
|
7608 |
* include only those paths that aren't configured.
|
|
|
7609 |
*/
|
|
|
7610 |
config_path = 0;
|
|
|
7611 |
if (cpi->cpi_pip == NULL)
|
|
|
7612 |
config_path = 1;
|
|
|
7613 |
else {
|
|
|
7614 |
MDI_PI_LOCK(cpi->cpi_pip);
|
|
|
7615 |
if (MDI_PI_IS_INIT(cpi->cpi_pip))
|
|
|
7616 |
config_path = 1;
|
|
|
7617 |
MDI_PI_UNLOCK(cpi->cpi_pip);
|
|
|
7618 |
}
|
|
|
7619 |
|
|
|
7620 |
if (config_path) {
|
|
|
7621 |
pp = kmem_alloc(sizeof (*pp), KM_SLEEP);
|
|
|
7622 |
len = strlen(cpi->cpi_cphci->cphci_path) +
|
|
|
7623 |
strlen(ct_name) + strlen(cpi->cpi_addr) + 3;
|
|
|
7624 |
pp->phys_path = kmem_alloc(len, KM_SLEEP);
|
|
|
7625 |
(void) snprintf(pp->phys_path, len, "%s/%s@%s",
|
|
|
7626 |
cpi->cpi_cphci->cphci_path, ct_name,
|
|
|
7627 |
cpi->cpi_addr);
|
|
|
7628 |
pp->phys_path_next = NULL;
|
|
|
7629 |
|
|
|
7630 |
if (pp_head == NULL)
|
|
|
7631 |
pp_head = pp;
|
|
|
7632 |
else
|
|
|
7633 |
pp_tail->phys_path_next = pp;
|
|
|
7634 |
pp_tail = pp;
|
|
|
7635 |
}
|
|
|
7636 |
}
|
|
|
7637 |
|
|
|
7638 |
return (pp_head);
|
|
|
7639 |
}
|
|
|
7640 |
|
|
|
7641 |
/*
|
|
|
7642 |
* Free the memory allocated for phci client path list.
|
|
|
7643 |
*/
|
|
|
7644 |
static void
|
|
|
7645 |
free_phclient_path_list(mdi_phys_path_t *pp_head)
|
|
|
7646 |
{
|
|
|
7647 |
mdi_phys_path_t *pp, *pp_next;
|
|
|
7648 |
|
|
|
7649 |
for (pp = pp_head; pp != NULL; pp = pp_next) {
|
|
|
7650 |
pp_next = pp->phys_path_next;
|
|
|
7651 |
kmem_free(pp->phys_path, strlen(pp->phys_path) + 1);
|
|
|
7652 |
kmem_free(pp, sizeof (*pp));
|
|
|
7653 |
}
|
|
|
7654 |
}
|
|
|
7655 |
|
|
|
7656 |
/*
|
|
|
7657 |
* Allocated async client structure and initialize with the specified values.
|
|
|
7658 |
*/
|
|
|
7659 |
static mdi_async_client_config_t *
|
|
|
7660 |
alloc_async_client_config(char *ct_name, char *ct_addr,
|
|
|
7661 |
mdi_phys_path_t *pp_head, mdi_vhcache_lookup_token_t *tok)
|
|
|
7662 |
{
|
|
|
7663 |
mdi_async_client_config_t *acc;
|
|
|
7664 |
|
|
|
7665 |
acc = kmem_alloc(sizeof (*acc), KM_SLEEP);
|
|
|
7666 |
acc->acc_ct_name = i_ddi_strdup(ct_name, KM_SLEEP);
|
|
|
7667 |
acc->acc_ct_addr = i_ddi_strdup(ct_addr, KM_SLEEP);
|
|
|
7668 |
acc->acc_phclient_path_list_head = pp_head;
|
|
|
7669 |
init_vhcache_lookup_token(&acc->acc_token, tok);
|
|
|
7670 |
acc->acc_next = NULL;
|
|
|
7671 |
return (acc);
|
|
|
7672 |
}
|
|
|
7673 |
|
|
|
7674 |
/*
|
|
|
7675 |
* Free the memory allocated for the async client structure and their members.
|
|
|
7676 |
*/
|
|
|
7677 |
static void
|
|
|
7678 |
free_async_client_config(mdi_async_client_config_t *acc)
|
|
|
7679 |
{
|
|
|
7680 |
if (acc->acc_phclient_path_list_head)
|
|
|
7681 |
free_phclient_path_list(acc->acc_phclient_path_list_head);
|
|
|
7682 |
kmem_free(acc->acc_ct_name, strlen(acc->acc_ct_name) + 1);
|
|
|
7683 |
kmem_free(acc->acc_ct_addr, strlen(acc->acc_ct_addr) + 1);
|
|
|
7684 |
kmem_free(acc, sizeof (*acc));
|
|
|
7685 |
}
|
|
|
7686 |
|
|
|
7687 |
/*
|
|
|
7688 |
* Sort vhcache pathinfos (cpis) of the specified client.
|
|
|
7689 |
* All cpis which do not have MDI_CPI_HINT_PATH_DOES_NOT_EXIST
|
|
|
7690 |
* flag set come at the beginning of the list. All cpis which have this
|
|
|
7691 |
* flag set come at the end of the list.
|
|
|
7692 |
*/
|
|
|
7693 |
static void
|
|
|
7694 |
sort_vhcache_paths(mdi_vhcache_client_t *cct)
|
|
|
7695 |
{
|
|
|
7696 |
mdi_vhcache_pathinfo_t *cpi, *cpi_next, *cpi_head;
|
|
|
7697 |
|
|
|
7698 |
cpi_head = cct->cct_cpi_head;
|
|
|
7699 |
cct->cct_cpi_head = cct->cct_cpi_tail = NULL;
|
|
|
7700 |
for (cpi = cpi_head; cpi != NULL; cpi = cpi_next) {
|
|
|
7701 |
cpi_next = cpi->cpi_next;
|
|
|
7702 |
enqueue_vhcache_pathinfo(cct, cpi);
|
|
|
7703 |
}
|
|
|
7704 |
}
|
|
|
7705 |
|
|
|
7706 |
/*
|
|
|
7707 |
* Verify whether MDI_CPI_HINT_PATH_DOES_NOT_EXIST flag setting is correct for
|
|
|
7708 |
* every vhcache pathinfo of the specified client. If not adjust the flag
|
|
|
7709 |
* setting appropriately.
|
|
|
7710 |
*
|
|
|
7711 |
* Note that MDI_CPI_HINT_PATH_DOES_NOT_EXIST flag is persisted in the
|
|
|
7712 |
* on-disk vhci cache. So every time this flag is updated the cache must be
|
|
|
7713 |
* flushed.
|
|
|
7714 |
*/
|
|
|
7715 |
static void
|
|
|
7716 |
adjust_sort_vhcache_paths(mdi_vhci_config_t *vhc, char *ct_name, char *ct_addr,
|
|
|
7717 |
mdi_vhcache_lookup_token_t *tok)
|
|
|
7718 |
{
|
|
|
7719 |
mdi_vhci_cache_t *vhcache = &vhc->vhc_vhcache;
|
|
|
7720 |
mdi_vhcache_client_t *cct;
|
|
|
7721 |
mdi_vhcache_pathinfo_t *cpi;
|
|
|
7722 |
|
|
|
7723 |
rw_enter(&vhcache->vhcache_lock, RW_READER);
|
|
|
7724 |
if ((cct = lookup_vhcache_client(vhcache, ct_name, ct_addr, tok))
|
|
|
7725 |
== NULL) {
|
|
|
7726 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7727 |
return;
|
|
|
7728 |
}
|
|
|
7729 |
|
|
|
7730 |
/*
|
|
|
7731 |
* to avoid unnecessary on-disk cache updates, first check if an
|
|
|
7732 |
* update is really needed. If no update is needed simply return.
|
|
|
7733 |
*/
|
|
|
7734 |
for (cpi = cct->cct_cpi_head; cpi != NULL; cpi = cpi->cpi_next) {
|
|
|
7735 |
if ((cpi->cpi_pip != NULL &&
|
|
|
7736 |
(cpi->cpi_flags & MDI_CPI_HINT_PATH_DOES_NOT_EXIST)) ||
|
|
|
7737 |
(cpi->cpi_pip == NULL &&
|
|
|
7738 |
!(cpi->cpi_flags & MDI_CPI_HINT_PATH_DOES_NOT_EXIST))) {
|
|
|
7739 |
break;
|
|
|
7740 |
}
|
|
|
7741 |
}
|
|
|
7742 |
if (cpi == NULL) {
|
|
|
7743 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7744 |
return;
|
|
|
7745 |
}
|
|
|
7746 |
|
|
|
7747 |
if (rw_tryupgrade(&vhcache->vhcache_lock) == 0) {
|
|
|
7748 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7749 |
rw_enter(&vhcache->vhcache_lock, RW_WRITER);
|
|
|
7750 |
if ((cct = lookup_vhcache_client(vhcache, ct_name, ct_addr,
|
|
|
7751 |
tok)) == NULL) {
|
|
|
7752 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7753 |
return;
|
|
|
7754 |
}
|
|
|
7755 |
}
|
|
|
7756 |
|
|
|
7757 |
for (cpi = cct->cct_cpi_head; cpi != NULL; cpi = cpi->cpi_next) {
|
|
|
7758 |
if (cpi->cpi_pip != NULL)
|
|
|
7759 |
cpi->cpi_flags &= ~MDI_CPI_HINT_PATH_DOES_NOT_EXIST;
|
|
|
7760 |
else
|
|
|
7761 |
cpi->cpi_flags |= MDI_CPI_HINT_PATH_DOES_NOT_EXIST;
|
|
|
7762 |
}
|
|
|
7763 |
sort_vhcache_paths(cct);
|
|
|
7764 |
|
|
|
7765 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7766 |
vhcache_dirty(vhc);
|
|
|
7767 |
}
|
|
|
7768 |
|
|
|
7769 |
/*
|
|
|
7770 |
* Configure all specified paths of the client.
|
|
|
7771 |
*/
|
|
|
7772 |
static void
|
|
|
7773 |
config_client_paths_sync(mdi_vhci_config_t *vhc, char *ct_name, char *ct_addr,
|
|
|
7774 |
mdi_phys_path_t *pp_head, mdi_vhcache_lookup_token_t *tok)
|
|
|
7775 |
{
|
|
|
7776 |
mdi_phys_path_t *pp;
|
|
|
7777 |
|
|
|
7778 |
for (pp = pp_head; pp != NULL; pp = pp->phys_path_next)
|
|
|
7779 |
(void) bus_config_one_phci_child(pp->phys_path);
|
|
|
7780 |
adjust_sort_vhcache_paths(vhc, ct_name, ct_addr, tok);
|
|
|
7781 |
}
|
|
|
7782 |
|
|
|
7783 |
/*
|
|
|
7784 |
* Dequeue elements from vhci async client config list and bus configure
|
|
|
7785 |
* their corresponding phci clients.
|
|
|
7786 |
*/
|
|
|
7787 |
static void
|
|
|
7788 |
config_client_paths_thread(void *arg)
|
|
|
7789 |
{
|
|
|
7790 |
mdi_vhci_config_t *vhc = (mdi_vhci_config_t *)arg;
|
|
|
7791 |
mdi_async_client_config_t *acc;
|
|
|
7792 |
clock_t quit_at_ticks;
|
|
|
7793 |
clock_t idle_time = mdi_async_config_idle_time * TICKS_PER_SECOND;
|
|
|
7794 |
callb_cpr_t cprinfo;
|
|
|
7795 |
|
|
|
7796 |
CALLB_CPR_INIT(&cprinfo, &vhc->vhc_lock, callb_generic_cpr,
|
|
|
7797 |
"mdi_config_client_paths");
|
|
|
7798 |
|
|
|
7799 |
for (; ; ) {
|
|
|
7800 |
quit_at_ticks = ddi_get_lbolt() + idle_time;
|
|
|
7801 |
|
|
|
7802 |
mutex_enter(&vhc->vhc_lock);
|
|
|
7803 |
while (!(vhc->vhc_flags & MDI_VHC_EXIT) &&
|
|
|
7804 |
vhc->vhc_acc_list_head == NULL &&
|
|
|
7805 |
ddi_get_lbolt() < quit_at_ticks) {
|
|
|
7806 |
CALLB_CPR_SAFE_BEGIN(&cprinfo);
|
|
|
7807 |
(void) cv_timedwait(&vhc->vhc_cv, &vhc->vhc_lock,
|
|
|
7808 |
quit_at_ticks);
|
|
|
7809 |
CALLB_CPR_SAFE_END(&cprinfo, &vhc->vhc_lock);
|
|
|
7810 |
}
|
|
|
7811 |
|
|
|
7812 |
if ((vhc->vhc_flags & MDI_VHC_EXIT) ||
|
|
|
7813 |
vhc->vhc_acc_list_head == NULL)
|
|
|
7814 |
goto out;
|
|
|
7815 |
|
|
|
7816 |
acc = vhc->vhc_acc_list_head;
|
|
|
7817 |
vhc->vhc_acc_list_head = acc->acc_next;
|
|
|
7818 |
if (vhc->vhc_acc_list_head == NULL)
|
|
|
7819 |
vhc->vhc_acc_list_tail = NULL;
|
|
|
7820 |
vhc->vhc_acc_count--;
|
|
|
7821 |
mutex_exit(&vhc->vhc_lock);
|
|
|
7822 |
|
|
|
7823 |
config_client_paths_sync(vhc, acc->acc_ct_name,
|
|
|
7824 |
acc->acc_ct_addr, acc->acc_phclient_path_list_head,
|
|
|
7825 |
&acc->acc_token);
|
|
|
7826 |
|
|
|
7827 |
free_async_client_config(acc);
|
|
|
7828 |
}
|
|
|
7829 |
|
|
|
7830 |
out:
|
|
|
7831 |
vhc->vhc_acc_thrcount--;
|
|
|
7832 |
/* CALLB_CPR_EXIT releases the vhc->vhc_lock */
|
|
|
7833 |
CALLB_CPR_EXIT(&cprinfo);
|
|
|
7834 |
}
|
|
|
7835 |
|
|
|
7836 |
/*
|
|
|
7837 |
* Arrange for all the phci client paths (pp_head) for the specified client
|
|
|
7838 |
* to be bus configured asynchronously by a thread.
|
|
|
7839 |
*/
|
|
|
7840 |
static void
|
|
|
7841 |
config_client_paths_async(mdi_vhci_config_t *vhc, char *ct_name, char *ct_addr,
|
|
|
7842 |
mdi_phys_path_t *pp_head, mdi_vhcache_lookup_token_t *tok)
|
|
|
7843 |
{
|
|
|
7844 |
mdi_async_client_config_t *acc, *newacc;
|
|
|
7845 |
int create_thread;
|
|
|
7846 |
|
|
|
7847 |
if (pp_head == NULL)
|
|
|
7848 |
return;
|
|
|
7849 |
|
|
|
7850 |
if (mdi_mtc_off) {
|
|
|
7851 |
config_client_paths_sync(vhc, ct_name, ct_addr, pp_head, tok);
|
|
|
7852 |
free_phclient_path_list(pp_head);
|
|
|
7853 |
return;
|
|
|
7854 |
}
|
|
|
7855 |
|
|
|
7856 |
newacc = alloc_async_client_config(ct_name, ct_addr, pp_head, tok);
|
|
|
7857 |
ASSERT(newacc);
|
|
|
7858 |
|
|
|
7859 |
mutex_enter(&vhc->vhc_lock);
|
|
|
7860 |
for (acc = vhc->vhc_acc_list_head; acc != NULL; acc = acc->acc_next) {
|
|
|
7861 |
if (strcmp(ct_name, acc->acc_ct_name) == 0 &&
|
|
|
7862 |
strcmp(ct_addr, acc->acc_ct_addr) == 0) {
|
|
|
7863 |
free_async_client_config(newacc);
|
|
|
7864 |
mutex_exit(&vhc->vhc_lock);
|
|
|
7865 |
return;
|
|
|
7866 |
}
|
|
|
7867 |
}
|
|
|
7868 |
|
|
|
7869 |
if (vhc->vhc_acc_list_head == NULL)
|
|
|
7870 |
vhc->vhc_acc_list_head = newacc;
|
|
|
7871 |
else
|
|
|
7872 |
vhc->vhc_acc_list_tail->acc_next = newacc;
|
|
|
7873 |
vhc->vhc_acc_list_tail = newacc;
|
|
|
7874 |
vhc->vhc_acc_count++;
|
|
|
7875 |
if (vhc->vhc_acc_count <= vhc->vhc_acc_thrcount) {
|
|
|
7876 |
cv_broadcast(&vhc->vhc_cv);
|
|
|
7877 |
create_thread = 0;
|
|
|
7878 |
} else {
|
|
|
7879 |
vhc->vhc_acc_thrcount++;
|
|
|
7880 |
create_thread = 1;
|
|
|
7881 |
}
|
|
|
7882 |
mutex_exit(&vhc->vhc_lock);
|
|
|
7883 |
|
|
|
7884 |
if (create_thread)
|
|
|
7885 |
(void) thread_create(NULL, 0, config_client_paths_thread, vhc,
|
|
|
7886 |
0, &p0, TS_RUN, minclsyspri);
|
|
|
7887 |
}
|
|
|
7888 |
|
|
|
7889 |
/*
|
|
|
7890 |
* Return number of online paths for the specified client.
|
|
|
7891 |
*/
|
|
|
7892 |
static int
|
|
|
7893 |
nonline_paths(mdi_vhcache_client_t *cct)
|
|
|
7894 |
{
|
|
|
7895 |
mdi_vhcache_pathinfo_t *cpi;
|
|
|
7896 |
int online_count = 0;
|
|
|
7897 |
|
|
|
7898 |
for (cpi = cct->cct_cpi_head; cpi != NULL; cpi = cpi->cpi_next) {
|
|
|
7899 |
if (cpi->cpi_pip != NULL) {
|
|
|
7900 |
MDI_PI_LOCK(cpi->cpi_pip);
|
|
|
7901 |
if (cpi->cpi_pip->pi_state == MDI_PATHINFO_STATE_ONLINE)
|
|
|
7902 |
online_count++;
|
|
|
7903 |
MDI_PI_UNLOCK(cpi->cpi_pip);
|
|
|
7904 |
}
|
|
|
7905 |
}
|
|
|
7906 |
|
|
|
7907 |
return (online_count);
|
|
|
7908 |
}
|
|
|
7909 |
|
|
|
7910 |
/*
|
|
|
7911 |
* Bus configure all paths for the specified vhci client.
|
|
|
7912 |
* If at least one path for the client is already online, the remaining paths
|
|
|
7913 |
* will be configured asynchronously. Otherwise, it synchronously configures
|
|
|
7914 |
* the paths until at least one path is online and then rest of the paths
|
|
|
7915 |
* will be configured asynchronously.
|
|
|
7916 |
*/
|
|
|
7917 |
static void
|
|
|
7918 |
config_client_paths(mdi_vhci_config_t *vhc, char *ct_name, char *ct_addr)
|
|
|
7919 |
{
|
|
|
7920 |
mdi_vhci_cache_t *vhcache = &vhc->vhc_vhcache;
|
|
|
7921 |
mdi_phys_path_t *pp_head, *pp;
|
|
|
7922 |
mdi_vhcache_client_t *cct;
|
|
|
7923 |
mdi_vhcache_lookup_token_t tok;
|
|
|
7924 |
|
|
|
7925 |
ASSERT(RW_LOCK_HELD(&vhcache->vhcache_lock));
|
|
|
7926 |
|
|
|
7927 |
init_vhcache_lookup_token(&tok, NULL);
|
|
|
7928 |
|
|
|
7929 |
if (ct_name == NULL || ct_addr == NULL ||
|
|
|
7930 |
(cct = lookup_vhcache_client(vhcache, ct_name, ct_addr, &tok))
|
|
|
7931 |
== NULL ||
|
|
|
7932 |
(pp_head = build_phclient_path_list(cct, ct_name)) == NULL) {
|
|
|
7933 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7934 |
return;
|
|
|
7935 |
}
|
|
|
7936 |
|
|
|
7937 |
/* if at least one path is online, configure the rest asynchronously */
|
|
|
7938 |
if (nonline_paths(cct) > 0) {
|
|
|
7939 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7940 |
config_client_paths_async(vhc, ct_name, ct_addr, pp_head, &tok);
|
|
|
7941 |
return;
|
|
|
7942 |
}
|
|
|
7943 |
|
|
|
7944 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7945 |
|
|
|
7946 |
for (pp = pp_head; pp != NULL; pp = pp->phys_path_next) {
|
|
|
7947 |
if (bus_config_one_phci_child(pp->phys_path) == MDI_SUCCESS) {
|
|
|
7948 |
rw_enter(&vhcache->vhcache_lock, RW_READER);
|
|
|
7949 |
|
|
|
7950 |
if ((cct = lookup_vhcache_client(vhcache, ct_name,
|
|
|
7951 |
ct_addr, &tok)) == NULL) {
|
|
|
7952 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7953 |
goto out;
|
|
|
7954 |
}
|
|
|
7955 |
|
|
|
7956 |
if (nonline_paths(cct) > 0 &&
|
|
|
7957 |
pp->phys_path_next != NULL) {
|
|
|
7958 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7959 |
config_client_paths_async(vhc, ct_name, ct_addr,
|
|
|
7960 |
pp->phys_path_next, &tok);
|
|
|
7961 |
pp->phys_path_next = NULL;
|
|
|
7962 |
goto out;
|
|
|
7963 |
}
|
|
|
7964 |
|
|
|
7965 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
7966 |
}
|
|
|
7967 |
}
|
|
|
7968 |
|
|
|
7969 |
adjust_sort_vhcache_paths(vhc, ct_name, ct_addr, &tok);
|
|
|
7970 |
out:
|
|
|
7971 |
free_phclient_path_list(pp_head);
|
|
|
7972 |
}
|
|
|
7973 |
|
|
|
7974 |
static void
|
|
|
7975 |
single_threaded_vhconfig_enter(mdi_vhci_config_t *vhc)
|
|
|
7976 |
{
|
|
|
7977 |
mutex_enter(&vhc->vhc_lock);
|
|
|
7978 |
while (vhc->vhc_flags & MDI_VHC_SINGLE_THREADED)
|
|
|
7979 |
cv_wait(&vhc->vhc_cv, &vhc->vhc_lock);
|
|
|
7980 |
vhc->vhc_flags |= MDI_VHC_SINGLE_THREADED;
|
|
|
7981 |
mutex_exit(&vhc->vhc_lock);
|
|
|
7982 |
}
|
|
|
7983 |
|
|
|
7984 |
static void
|
|
|
7985 |
single_threaded_vhconfig_exit(mdi_vhci_config_t *vhc)
|
|
|
7986 |
{
|
|
|
7987 |
mutex_enter(&vhc->vhc_lock);
|
|
|
7988 |
vhc->vhc_flags &= ~MDI_VHC_SINGLE_THREADED;
|
|
|
7989 |
cv_broadcast(&vhc->vhc_cv);
|
|
|
7990 |
mutex_exit(&vhc->vhc_lock);
|
|
|
7991 |
}
|
|
|
7992 |
|
|
|
7993 |
/*
|
|
|
7994 |
* Attach the phci driver instances associated with the vhci:
|
|
|
7995 |
* If root is mounted attach all phci driver instances.
|
|
|
7996 |
* If root is not mounted, attach the instances of only those phci
|
|
|
7997 |
* drivers that have the root support.
|
|
|
7998 |
*/
|
|
|
7999 |
static void
|
|
|
8000 |
attach_phci_drivers(mdi_vhci_config_t *vhc, int root_mounted)
|
|
|
8001 |
{
|
|
|
8002 |
int i;
|
|
|
8003 |
major_t m;
|
|
|
8004 |
|
|
|
8005 |
for (i = 0; i < vhc->vhc_nphci_drivers; i++) {
|
|
|
8006 |
if (root_mounted == 0 &&
|
|
|
8007 |
vhc->vhc_phci_driver_list[i].phdriver_root_support == 0)
|
|
|
8008 |
continue;
|
|
|
8009 |
|
|
|
8010 |
m = ddi_name_to_major(
|
|
|
8011 |
vhc->vhc_phci_driver_list[i].phdriver_name);
|
|
|
8012 |
if (m != (major_t)-1) {
|
|
|
8013 |
if (ddi_hold_installed_driver(m) != NULL)
|
|
|
8014 |
ddi_rele_driver(m);
|
|
|
8015 |
}
|
|
|
8016 |
}
|
|
|
8017 |
}
|
|
|
8018 |
|
|
|
8019 |
/*
|
|
|
8020 |
* Build vhci cache:
|
|
|
8021 |
*
|
|
|
8022 |
* Attach phci driver instances and then drive BUS_CONFIG_ALL on
|
|
|
8023 |
* the phci driver instances. During this process the cache gets built.
|
|
|
8024 |
*
|
|
|
8025 |
* Cache is built fully if the root is mounted (i.e., root_mounted is nonzero).
|
|
|
8026 |
*
|
|
|
8027 |
* If the root is not mounted, phci drivers that do not have root support
|
|
|
8028 |
* are not attached. As a result the cache is built partially. The entries
|
|
|
8029 |
* in the cache reflect only those phci drivers that have root support.
|
|
|
8030 |
*/
|
|
|
8031 |
static vhcache_build_status_t
|
|
|
8032 |
build_vhci_cache(mdi_vhci_config_t *vhc, int root_mounted)
|
|
|
8033 |
{
|
|
|
8034 |
mdi_vhci_cache_t *vhcache = &vhc->vhc_vhcache;
|
|
|
8035 |
|
|
|
8036 |
rw_enter(&vhcache->vhcache_lock, RW_READER);
|
|
|
8037 |
if (vhcache->vhcache_flags & MDI_VHCI_CACHE_SETUP_DONE) {
|
|
|
8038 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
8039 |
return (VHCACHE_NOT_REBUILT);
|
|
|
8040 |
}
|
|
|
8041 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
8042 |
|
|
|
8043 |
attach_phci_drivers(vhc, root_mounted);
|
|
|
8044 |
bus_config_all_phcis(vhcache, NDI_DRV_CONF_REPROBE | NDI_NO_EVENT,
|
|
|
8045 |
BUS_CONFIG_ALL, (major_t)-1);
|
|
|
8046 |
|
|
|
8047 |
if (root_mounted) {
|
|
|
8048 |
rw_enter(&vhcache->vhcache_lock, RW_WRITER);
|
|
|
8049 |
vhcache->vhcache_flags |= MDI_VHCI_CACHE_SETUP_DONE;
|
|
|
8050 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
8051 |
vhcache_dirty(vhc);
|
|
|
8052 |
return (VHCACHE_FULLY_BUILT);
|
|
|
8053 |
} else
|
|
|
8054 |
return (VHCACHE_PARTIALLY_BUILT);
|
|
|
8055 |
}
|
|
|
8056 |
|
|
|
8057 |
/*
|
|
|
8058 |
* Wait until the root is mounted and then build the vhci cache.
|
|
|
8059 |
*/
|
|
|
8060 |
static void
|
|
|
8061 |
build_vhci_cache_thread(void *arg)
|
|
|
8062 |
{
|
|
|
8063 |
mdi_vhci_config_t *vhc = (mdi_vhci_config_t *)arg;
|
|
|
8064 |
|
|
|
8065 |
mutex_enter(&vhc->vhc_lock);
|
|
|
8066 |
while (!modrootloaded && !(vhc->vhc_flags & MDI_VHC_EXIT)) {
|
|
|
8067 |
(void) cv_timedwait(&vhc->vhc_cv, &vhc->vhc_lock,
|
|
|
8068 |
ddi_get_lbolt() + 10 * TICKS_PER_SECOND);
|
|
|
8069 |
}
|
|
|
8070 |
if (vhc->vhc_flags & MDI_VHC_EXIT)
|
|
|
8071 |
goto out;
|
|
|
8072 |
|
|
|
8073 |
mutex_exit(&vhc->vhc_lock);
|
|
|
8074 |
|
|
|
8075 |
/*
|
|
|
8076 |
* Now that the root is mounted. So build_vhci_cache() will build
|
|
|
8077 |
* the full cache.
|
|
|
8078 |
*/
|
|
|
8079 |
(void) build_vhci_cache(vhc, 1);
|
|
|
8080 |
|
|
|
8081 |
mutex_enter(&vhc->vhc_lock);
|
|
|
8082 |
out:
|
|
|
8083 |
vhc->vhc_flags &= ~MDI_VHC_BUILD_VHCI_CACHE_THREAD;
|
|
|
8084 |
mutex_exit(&vhc->vhc_lock);
|
|
|
8085 |
}
|
|
|
8086 |
|
|
|
8087 |
/*
|
|
|
8088 |
* Build vhci cache - a wrapper for build_vhci_cache().
|
|
|
8089 |
*
|
|
|
8090 |
* In a normal case on-disk vhci cache is read and setup during booting.
|
|
|
8091 |
* But if the on-disk vhci cache is not there or deleted or corrupted then
|
|
|
8092 |
* this function sets up the vhci cache.
|
|
|
8093 |
*
|
|
|
8094 |
* The cache is built fully if the root is mounted.
|
|
|
8095 |
*
|
|
|
8096 |
* If the root is not mounted, initially the cache is built reflecting only
|
|
|
8097 |
* those driver entries that have the root support. A separate thread is
|
|
|
8098 |
* created to handle the creation of full cache. This thread will wait
|
|
|
8099 |
* until the root is mounted and then rebuilds the cache.
|
|
|
8100 |
*/
|
|
|
8101 |
static int
|
|
|
8102 |
e_build_vhci_cache(mdi_vhci_config_t *vhc)
|
|
|
8103 |
{
|
|
|
8104 |
vhcache_build_status_t rv;
|
|
|
8105 |
|
|
|
8106 |
single_threaded_vhconfig_enter(vhc);
|
|
|
8107 |
|
|
|
8108 |
mutex_enter(&vhc->vhc_lock);
|
|
|
8109 |
if (vhc->vhc_flags & MDI_VHC_BUILD_VHCI_CACHE_THREAD) {
|
|
|
8110 |
if (modrootloaded) {
|
|
|
8111 |
cv_broadcast(&vhc->vhc_cv);
|
|
|
8112 |
/* wait until build vhci cache thread exits */
|
|
|
8113 |
while (vhc->vhc_flags & MDI_VHC_BUILD_VHCI_CACHE_THREAD)
|
|
|
8114 |
cv_wait(&vhc->vhc_cv, &vhc->vhc_lock);
|
|
|
8115 |
rv = VHCACHE_FULLY_BUILT;
|
|
|
8116 |
} else {
|
|
|
8117 |
/*
|
|
|
8118 |
* The presense of MDI_VHC_BUILD_VHCI_CACHE_THREAD
|
|
|
8119 |
* flag indicates that the cache has already been
|
|
|
8120 |
* partially built.
|
|
|
8121 |
*/
|
|
|
8122 |
rv = VHCACHE_PARTIALLY_BUILT;
|
|
|
8123 |
}
|
|
|
8124 |
|
|
|
8125 |
mutex_exit(&vhc->vhc_lock);
|
|
|
8126 |
single_threaded_vhconfig_exit(vhc);
|
|
|
8127 |
return (rv);
|
|
|
8128 |
}
|
|
|
8129 |
mutex_exit(&vhc->vhc_lock);
|
|
|
8130 |
|
|
|
8131 |
rv = build_vhci_cache(vhc, modrootloaded);
|
|
|
8132 |
|
|
|
8133 |
if (rv == VHCACHE_PARTIALLY_BUILT) {
|
|
|
8134 |
/*
|
|
|
8135 |
* create a thread; this thread will wait until the root is
|
|
|
8136 |
* mounted and then fully rebuilds the cache.
|
|
|
8137 |
*/
|
|
|
8138 |
mutex_enter(&vhc->vhc_lock);
|
|
|
8139 |
vhc->vhc_flags |= MDI_VHC_BUILD_VHCI_CACHE_THREAD;
|
|
|
8140 |
mutex_exit(&vhc->vhc_lock);
|
|
|
8141 |
(void) thread_create(NULL, 0, build_vhci_cache_thread,
|
|
|
8142 |
vhc, 0, &p0, TS_RUN, minclsyspri);
|
|
|
8143 |
}
|
|
|
8144 |
|
|
|
8145 |
single_threaded_vhconfig_exit(vhc);
|
|
|
8146 |
return (rv);
|
|
|
8147 |
}
|
|
|
8148 |
|
|
|
8149 |
/*
|
|
|
8150 |
* Generic vhci bus config implementation:
|
|
|
8151 |
*
|
|
|
8152 |
* Parameters
|
|
|
8153 |
* vdip vhci dip
|
|
|
8154 |
* flags bus config flags
|
|
|
8155 |
* op bus config operation
|
|
|
8156 |
* The remaining parameters are bus config operation specific
|
|
|
8157 |
*
|
|
|
8158 |
* for BUS_CONFIG_ONE
|
|
|
8159 |
* arg pointer to name@addr
|
|
|
8160 |
* child upon successful return from this function, *child will be
|
|
|
8161 |
* set to the configured and held devinfo child node of vdip.
|
|
|
8162 |
* ct_addr pointer to client address (i.e. GUID)
|
|
|
8163 |
*
|
|
|
8164 |
* for BUS_CONFIG_DRIVER
|
|
|
8165 |
* arg major number of the driver
|
|
|
8166 |
* child and ct_addr parameters are ignored
|
|
|
8167 |
*
|
|
|
8168 |
* for BUS_CONFIG_ALL
|
|
|
8169 |
* arg, child, and ct_addr parameters are ignored
|
|
|
8170 |
*
|
|
|
8171 |
* Note that for the rest of the bus config operations, this function simply
|
|
|
8172 |
* calls the framework provided default bus config routine.
|
|
|
8173 |
*/
|
|
|
8174 |
int
|
|
|
8175 |
mdi_vhci_bus_config(dev_info_t *vdip, uint_t flags, ddi_bus_config_op_t op,
|
|
|
8176 |
void *arg, dev_info_t **child, char *ct_addr)
|
|
|
8177 |
{
|
|
|
8178 |
mdi_vhci_t *vh = i_devi_get_vhci(vdip);
|
|
|
8179 |
mdi_vhci_config_t *vhc = vh->vh_config;
|
|
|
8180 |
mdi_vhci_cache_t *vhcache = &vhc->vhc_vhcache;
|
|
|
8181 |
vhcache_build_status_t rv = VHCACHE_NOT_REBUILT;
|
|
|
8182 |
char *cp;
|
|
|
8183 |
|
|
|
8184 |
/*
|
|
|
8185 |
* While bus configuring phcis, the phci driver interactions with MDI
|
|
|
8186 |
* cause child nodes to be enumerated under the vhci node for which
|
|
|
8187 |
* they need to ndi_devi_enter the vhci node.
|
|
|
8188 |
*
|
|
|
8189 |
* Unfortunately, to avoid the deadlock, we ourself can not wait for
|
|
|
8190 |
* for the bus config operations on phcis to finish while holding the
|
|
|
8191 |
* ndi_devi_enter lock. To avoid this deadlock, skip bus configs on
|
|
|
8192 |
* phcis and call the default framework provided bus config function
|
|
|
8193 |
* if we are called with ndi_devi_enter lock held.
|
|
|
8194 |
*/
|
|
|
8195 |
if (DEVI_BUSY_OWNED(vdip)) {
|
|
|
8196 |
MDI_DEBUG(2, (CE_NOTE, vdip,
|
|
|
8197 |
"!MDI: vhci bus config: vhci dip is busy owned\n"));
|
|
|
8198 |
goto default_bus_config;
|
|
|
8199 |
}
|
|
|
8200 |
|
|
|
8201 |
rw_enter(&vhcache->vhcache_lock, RW_READER);
|
|
|
8202 |
if (!(vhcache->vhcache_flags & MDI_VHCI_CACHE_SETUP_DONE)) {
|
|
|
8203 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
8204 |
rv = e_build_vhci_cache(vhc);
|
|
|
8205 |
rw_enter(&vhcache->vhcache_lock, RW_READER);
|
|
|
8206 |
}
|
|
|
8207 |
|
|
|
8208 |
switch (op) {
|
|
|
8209 |
case BUS_CONFIG_ONE:
|
|
|
8210 |
/* extract node name */
|
|
|
8211 |
cp = (char *)arg;
|
|
|
8212 |
while (*cp != '\0' && *cp != '@')
|
|
|
8213 |
cp++;
|
|
|
8214 |
if (*cp == '@') {
|
|
|
8215 |
*cp = '\0';
|
|
|
8216 |
config_client_paths(vhc, (char *)arg, ct_addr);
|
|
|
8217 |
/* config_client_paths() releases the cache_lock */
|
|
|
8218 |
*cp = '@';
|
|
|
8219 |
} else
|
|
|
8220 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
8221 |
break;
|
|
|
8222 |
|
|
|
8223 |
case BUS_CONFIG_DRIVER:
|
|
|
8224 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
8225 |
if (rv == VHCACHE_NOT_REBUILT)
|
|
|
8226 |
bus_config_all_phcis(vhcache, flags, op,
|
|
|
8227 |
(major_t)(uintptr_t)arg);
|
|
|
8228 |
break;
|
|
|
8229 |
|
|
|
8230 |
case BUS_CONFIG_ALL:
|
|
|
8231 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
8232 |
if (rv == VHCACHE_NOT_REBUILT)
|
|
|
8233 |
bus_config_all_phcis(vhcache, flags, op, -1);
|
|
|
8234 |
break;
|
|
|
8235 |
|
|
|
8236 |
default:
|
|
|
8237 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
8238 |
break;
|
|
|
8239 |
}
|
|
|
8240 |
|
|
|
8241 |
|
|
|
8242 |
default_bus_config:
|
|
|
8243 |
/*
|
|
|
8244 |
* All requested child nodes are enumerated under the vhci.
|
|
|
8245 |
* Now configure them.
|
|
|
8246 |
*/
|
|
|
8247 |
if (ndi_busop_bus_config(vdip, flags, op, arg, child, 0) ==
|
|
|
8248 |
NDI_SUCCESS) {
|
|
|
8249 |
return (MDI_SUCCESS);
|
|
|
8250 |
}
|
|
|
8251 |
|
|
|
8252 |
return (MDI_FAILURE);
|
|
|
8253 |
}
|
|
|
8254 |
|
|
|
8255 |
/*
|
|
|
8256 |
* Read the on-disk vhci cache into an nvlist for the specified vhci class.
|
|
|
8257 |
*/
|
|
|
8258 |
static nvlist_t *
|
|
|
8259 |
read_on_disk_vhci_cache(char *vhci_class)
|
|
|
8260 |
{
|
|
|
8261 |
nvlist_t *nvl;
|
|
|
8262 |
int err;
|
|
|
8263 |
char *filename;
|
|
|
8264 |
|
|
|
8265 |
filename = vhclass2vhcache_filename(vhci_class);
|
|
|
8266 |
|
|
|
8267 |
if ((err = fread_nvlist(filename, &nvl)) == 0) {
|
|
|
8268 |
kmem_free(filename, strlen(filename) + 1);
|
|
|
8269 |
return (nvl);
|
|
|
8270 |
} else if (err == EIO)
|
|
|
8271 |
cmn_err(CE_WARN, "%s: I/O error, will recreate\n", filename);
|
|
|
8272 |
else if (err == EINVAL)
|
|
|
8273 |
cmn_err(CE_WARN,
|
|
|
8274 |
"%s: data file corrupted, will recreate\n", filename);
|
|
|
8275 |
|
|
|
8276 |
kmem_free(filename, strlen(filename) + 1);
|
|
|
8277 |
return (NULL);
|
|
|
8278 |
}
|
|
|
8279 |
|
|
|
8280 |
/*
|
|
|
8281 |
* Read on-disk vhci cache into nvlists for all vhci classes.
|
|
|
8282 |
* Called during booting by i_ddi_read_devices_files().
|
|
|
8283 |
*/
|
|
|
8284 |
void
|
|
|
8285 |
mdi_read_devices_files(void)
|
|
|
8286 |
{
|
|
|
8287 |
int i;
|
|
|
8288 |
|
|
|
8289 |
for (i = 0; i < N_VHCI_CLASSES; i++)
|
|
|
8290 |
vhcache_nvl[i] = read_on_disk_vhci_cache(vhci_class_list[i]);
|
|
|
8291 |
}
|
|
|
8292 |
|
|
|
8293 |
/*
|
|
|
8294 |
* Remove all stale entries from vhci cache.
|
|
|
8295 |
*/
|
|
|
8296 |
static void
|
|
|
8297 |
clean_vhcache(mdi_vhci_config_t *vhc)
|
|
|
8298 |
{
|
|
|
8299 |
mdi_vhci_cache_t *vhcache = &vhc->vhc_vhcache;
|
|
|
8300 |
mdi_vhcache_phci_t *cphci, *cphci_head, *cphci_next;
|
|
|
8301 |
mdi_vhcache_client_t *cct, *cct_head, *cct_next;
|
|
|
8302 |
mdi_vhcache_pathinfo_t *cpi, *cpi_head, *cpi_next;
|
|
|
8303 |
|
|
|
8304 |
rw_enter(&vhcache->vhcache_lock, RW_WRITER);
|
|
|
8305 |
|
|
|
8306 |
cct_head = vhcache->vhcache_client_head;
|
|
|
8307 |
vhcache->vhcache_client_head = vhcache->vhcache_client_tail = NULL;
|
|
|
8308 |
for (cct = cct_head; cct != NULL; cct = cct_next) {
|
|
|
8309 |
cct_next = cct->cct_next;
|
|
|
8310 |
|
|
|
8311 |
cpi_head = cct->cct_cpi_head;
|
|
|
8312 |
cct->cct_cpi_head = cct->cct_cpi_tail = NULL;
|
|
|
8313 |
for (cpi = cpi_head; cpi != NULL; cpi = cpi_next) {
|
|
|
8314 |
cpi_next = cpi->cpi_next;
|
|
|
8315 |
if (cpi->cpi_pip != NULL) {
|
|
|
8316 |
ASSERT(cpi->cpi_cphci->cphci_phci != NULL);
|
|
|
8317 |
enqueue_tail_vhcache_pathinfo(cct, cpi);
|
|
|
8318 |
} else
|
|
|
8319 |
free_vhcache_pathinfo(cpi);
|
|
|
8320 |
}
|
|
|
8321 |
|
|
|
8322 |
if (cct->cct_cpi_head != NULL)
|
|
|
8323 |
enqueue_vhcache_client(vhcache, cct);
|
|
|
8324 |
else {
|
|
|
8325 |
(void) mod_hash_destroy(vhcache->vhcache_client_hash,
|
|
|
8326 |
(mod_hash_key_t)cct->cct_name_addr);
|
|
|
8327 |
free_vhcache_client(cct);
|
|
|
8328 |
}
|
|
|
8329 |
}
|
|
|
8330 |
|
|
|
8331 |
cphci_head = vhcache->vhcache_phci_head;
|
|
|
8332 |
vhcache->vhcache_phci_head = vhcache->vhcache_phci_tail = NULL;
|
|
|
8333 |
for (cphci = cphci_head; cphci != NULL; cphci = cphci_next) {
|
|
|
8334 |
cphci_next = cphci->cphci_next;
|
|
|
8335 |
if (cphci->cphci_phci != NULL)
|
|
|
8336 |
enqueue_vhcache_phci(vhcache, cphci);
|
|
|
8337 |
else
|
|
|
8338 |
free_vhcache_phci(cphci);
|
|
|
8339 |
}
|
|
|
8340 |
|
|
|
8341 |
vhcache->vhcache_clean_time = lbolt64;
|
|
|
8342 |
rw_exit(&vhcache->vhcache_lock);
|
|
|
8343 |
vhcache_dirty(vhc);
|
|
|
8344 |
}
|
|
|
8345 |
|
|
|
8346 |
/*
|
|
|
8347 |
* Remove all stale entries from vhci cache.
|
|
|
8348 |
* Called by i_ddi_clean_devices_files() during the execution of devfsadm -C
|
|
|
8349 |
*/
|
|
|
8350 |
void
|
|
|
8351 |
mdi_clean_vhcache(void)
|
|
|
8352 |
{
|
|
|
8353 |
mdi_vhci_t *vh;
|
|
|
8354 |
|
|
|
8355 |
mutex_enter(&mdi_mutex);
|
|
|
8356 |
for (vh = mdi_vhci_head; vh != NULL; vh = vh->vh_next) {
|
|
|
8357 |
vh->vh_refcnt++;
|
|
|
8358 |
mutex_exit(&mdi_mutex);
|
|
|
8359 |
clean_vhcache(vh->vh_config);
|
|
|
8360 |
mutex_enter(&mdi_mutex);
|
|
|
8361 |
vh->vh_refcnt--;
|
|
|
8362 |
}
|
|
|
8363 |
mutex_exit(&mdi_mutex);
|
|
|
8364 |
}
|