drctl.c revision af4c679f647cf088543c762e33d41a3ac52cfa14
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda/*
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * CDDL HEADER START
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda *
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * The contents of this file are subject to the terms of the
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * Common Development and Distribution License (the "License").
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * You may not use this file except in compliance with the License.
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda *
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * or http://www.opensolaris.org/os/licensing.
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * See the License for the specific language governing permissions
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * and limitations under the License.
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda *
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * When distributing Covered Code, include this CDDL HEADER in each
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * If applicable, add the following below this CDDL HEADER, with the
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * fields enclosed by brackets "[]" replaced with your own identifying
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * information: Portions Copyright [yyyy] [name of copyright owner]
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda *
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * CDDL HEADER END
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda/*
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * Use is subject to license terms.
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda/*
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * DR control module for LDoms
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda#include <sys/sysmacros.h>
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda#include <sys/modctl.h>
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda#include <sys/conf.h>
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda#include <sys/ddi.h>
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda#include <sys/sunddi.h>
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda#include <sys/ddi_impldefs.h>
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda#include <sys/stat.h>
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda#include <sys/door.h>
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda#include <sys/open.h>
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda#include <sys/note.h>
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda#include <sys/ldoms.h>
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda#include <sys/dr_util.h>
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda#include <sys/drctl.h>
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda#include <sys/drctl_impl.h>
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic int drctl_attach(dev_info_t *, ddi_attach_cmd_t);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic int drctl_detach(dev_info_t *, ddi_detach_cmd_t);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic int drctl_getinfo(dev_info_t *, ddi_info_cmd_t, void *, void **);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic int drctl_open(dev_t *, int, int, cred_t *);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic int drctl_close(dev_t, int, int, cred_t *);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic int drctl_ioctl(dev_t, int, intptr_t, int, cred_t *, int *);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystemsstatic void *pack_message(int, int, int, void *, size_t *, size_t *);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystemsstatic int send_message(void *, size_t, drctl_resp_t **, size_t *);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda/*
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * Configuration data structures
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic struct cb_ops drctl_cb_ops = {
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctl_open, /* open */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctl_close, /* close */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda nodev, /* strategy */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda nodev, /* print */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda nodev, /* dump */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda nodev, /* read */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda nodev, /* write */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctl_ioctl, /* ioctl */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda nodev, /* devmap */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda nodev, /* mmap */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda nodev, /* segmap */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda nochpoll, /* poll */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda ddi_prop_op, /* prop_op */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda NULL, /* streamtab */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda D_MP | D_NEW, /* driver compatibility flag */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda CB_REV, /* cb_ops revision */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda nodev, /* async read */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda nodev /* async write */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda};
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic struct dev_ops drctl_ops = {
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda DEVO_REV, /* devo_rev */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda 0, /* refcnt */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctl_getinfo, /* info */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda nulldev, /* identify */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda nulldev, /* probe */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctl_attach, /* attach */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctl_detach, /* detach */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda nodev, /* reset */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda &drctl_cb_ops, /* driver operations */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda NULL, /* bus operations */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda NULL, /* power */
193974072f41a843678abf5f61979c748687e66bSherry Moore ddi_quiesce_not_needed, /* quiesce */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda};
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic struct modldrv modldrv = {
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda &mod_driverops, /* type of module - driver */
193974072f41a843678abf5f61979c748687e66bSherry Moore "DR Control pseudo driver",
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda &drctl_ops
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda};
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic struct modlinkage modlinkage = {
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda MODREV_1,
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda &modldrv,
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda NULL
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda};
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda/*
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * Locking strategy
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda *
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * One of the reasons for this module's existence is to serialize
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * DR requests which might be coming from different sources. Only
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * one operation is allowed to be in progress at any given time.
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda *
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * A single lock word (the 'drc_busy' element below) is NULL
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * when there is no operation in progress. When a client of this
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * module initiates an operation it grabs the mutex 'drc_lock' in
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * order to examine the lock word ('drc_busy'). If no other
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * operation is in progress, the lock word will be NULL. If so,
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * a cookie which uniquely identifies the requestor is stored in
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * the lock word, and the mutex is released. Attempts by other
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * clients to initiate an operation will fail.
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda *
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * When the lock-holding client's operation is completed, the
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * client will call a "finalize" function in this module, providing
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * the cookie passed with the original request. Since the cookie
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * matches, the operation will succeed and the lock word will be
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * cleared. At this point, an new operation may be initiated.
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda/*
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * Driver private data
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic struct drctl_unit {
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda kmutex_t drc_lock; /* global driver lock */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda dev_info_t *drc_dip; /* dev_info pointer */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda kcondvar_t drc_busy_cv; /* block for !busy */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctl_cookie_t drc_busy; /* NULL if free else a unique */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda /* identifier for caller */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda int drc_cmd; /* the cmd underway (or -1) */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda int drc_flags; /* saved flag from above cmd */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda int drc_inst; /* our single instance */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda uint_t drc_state; /* driver state */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda} drctl_state;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic struct drctl_unit *drctlp = &drctl_state;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedaint
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda_init(void)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda{
e1ebb9ec908bc2d0a8810f137ebd6566cc8a8061lm int rv;
e1ebb9ec908bc2d0a8810f137ebd6566cc8a8061lm
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctlp->drc_inst = -1;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda mutex_init(&drctlp->drc_lock, NULL, MUTEX_DRIVER, NULL);
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe cv_init(&drctlp->drc_busy_cv, NULL, CV_DRIVER, NULL);
e1ebb9ec908bc2d0a8810f137ebd6566cc8a8061lm
e1ebb9ec908bc2d0a8810f137ebd6566cc8a8061lm if ((rv = mod_install(&modlinkage)) != 0)
e1ebb9ec908bc2d0a8810f137ebd6566cc8a8061lm mutex_destroy(&drctlp->drc_lock);
e1ebb9ec908bc2d0a8810f137ebd6566cc8a8061lm
e1ebb9ec908bc2d0a8810f137ebd6566cc8a8061lm return (rv);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda}
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedaint
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda_fini(void)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda{
e1ebb9ec908bc2d0a8810f137ebd6566cc8a8061lm int rv;
e1ebb9ec908bc2d0a8810f137ebd6566cc8a8061lm
e1ebb9ec908bc2d0a8810f137ebd6566cc8a8061lm if ((rv = mod_remove(&modlinkage)) != 0)
e1ebb9ec908bc2d0a8810f137ebd6566cc8a8061lm return (rv);
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe cv_destroy(&drctlp->drc_busy_cv);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda mutex_destroy(&drctlp->drc_lock);
e1ebb9ec908bc2d0a8810f137ebd6566cc8a8061lm return (0);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda}
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedaint
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda_info(struct modinfo *modinfop)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda{
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (mod_info(&modlinkage, modinfop));
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda}
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda/*
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * Do the attach work
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic int
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedadrctl_do_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda{
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda _NOTE(ARGUNUSED(cmd))
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda char *str = "drctl_do_attach";
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda int retval = DDI_SUCCESS;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda if (drctlp->drc_inst != -1) {
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda cmn_err(CE_WARN, "%s: an instance is already attached!", str);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (DDI_FAILURE);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctlp->drc_inst = ddi_get_instance(dip);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda retval = ddi_create_minor_node(dip, "drctl", S_IFCHR,
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctlp->drc_inst, DDI_PSEUDO, 0);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda if (retval != DDI_SUCCESS) {
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda cmn_err(CE_WARN, "%s: can't create minor node", str);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctlp->drc_inst = -1;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (retval);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctlp->drc_dip = dip;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda ddi_report_dev(dip);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (retval);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda}
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic int
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedadrctl_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda{
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda switch (cmd) {
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DDI_ATTACH:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (drctl_do_attach(dip, cmd));
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda default:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (DDI_FAILURE);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda}
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda/* ARGSUSED */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic int
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedadrctl_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda{
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda switch (cmd) {
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DDI_DETACH:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctlp->drc_inst = -1;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda ddi_remove_minor_node(dip, "drctl");
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (DDI_SUCCESS);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda default:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (DDI_FAILURE);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda}
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic int
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedadrctl_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **resultp)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda{
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda _NOTE(ARGUNUSED(dip, cmd, arg, resultp))
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (0);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda}
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic int
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedadrctl_open(dev_t *devp, int flag, int otyp, cred_t *cred_p)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda{
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda _NOTE(ARGUNUSED(devp, flag, cred_p))
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda if (otyp != OTYP_CHR)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (EINVAL);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (0);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda}
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic int
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedadrctl_close(dev_t dev, int flag, int otyp, cred_t *cred_p)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda{
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda _NOTE(ARGUNUSED(dev, flag, otyp, cred_p))
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (0);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda}
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda/*
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems * Create a reponse structure which includes an array of drctl_rsrc_t
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems * structures in which each status element is set to the 'status'
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems * arg. There is no error text, so set the 'offset' elements to 0.
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda */
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystemsstatic drctl_resp_t *
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedadrctl_generate_resp(drctl_rsrc_t *res,
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda int count, size_t *rsize, drctl_status_t status)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda{
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems int i;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda size_t size;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems drctl_rsrc_t *rsrc;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems drctl_resp_t *resp;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems size = offsetof(drctl_resp_t, resp_resources) + (count * sizeof (*res));
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems resp = kmem_alloc(size, KM_SLEEP);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems DR_DBG_KMEM("%s: alloc addr %p size %ld\n",
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems __func__, (void *)resp, size);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems resp->resp_type = DRCTL_RESP_OK;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems rsrc = resp->resp_resources;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems bcopy(res, rsrc, count * sizeof (*res));
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems for (i = 0; i < count; i++) {
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems rsrc[i].status = status;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems rsrc[i].offset = 0;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda *rsize = size;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems return (resp);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems}
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems/*
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems * Generate an error response message.
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems */
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystemsstatic drctl_resp_t *
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystemsdrctl_generate_err_resp(char *msg, size_t *size)
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems{
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems drctl_resp_t *resp;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems ASSERT(msg != NULL);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems ASSERT(size != NULL);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems *size = offsetof(drctl_resp_t, resp_err_msg) + strlen(msg) + 1;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems resp = kmem_alloc(*size, KM_SLEEP);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems DR_DBG_KMEM("%s: alloc addr %p size %ld\n",
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems __func__, (void *)resp, *size);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems resp->resp_type = DRCTL_RESP_ERR;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems (void) strcpy(resp->resp_err_msg, msg);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems return (resp);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems}
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems/*
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems * Since response comes from userland, verify that it is at least the
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems * minimum size based on the size of the original request. Verify
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems * that any offsets to error strings are within the string area of
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems * the response and, force the string area to be null-terminated.
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems */
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystemsstatic int
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystemsverify_response(int cmd,
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems int count, drctl_resp_t *resp, size_t sent_len, size_t resp_len)
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems{
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems drctl_rsrc_t *rsrc = resp->resp_resources;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems size_t rcvd_len = resp_len - (offsetof(drctl_resp_t, resp_resources));
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems int is_cpu = 0;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems int i;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems switch (cmd) {
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems case DRCTL_CPU_CONFIG_REQUEST:
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems case DRCTL_CPU_UNCONFIG_REQUEST:
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems if (rcvd_len < sent_len)
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems return (EIO);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems is_cpu = 1;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems break;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems case DRCTL_IO_UNCONFIG_REQUEST:
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems case DRCTL_IO_CONFIG_REQUEST:
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems if (count != 1)
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems return (EIO);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems break;
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro case DRCTL_MEM_CONFIG_REQUEST:
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro case DRCTL_MEM_UNCONFIG_REQUEST:
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro break;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems default:
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems return (EIO);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems }
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems for (i = 0; i < count; i++)
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems if ((rsrc[i].offset > 0) &&
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems /* string can't be inside the bounds of original request */
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems (((rsrc[i].offset < sent_len) && is_cpu) ||
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems /* string must start inside the message */
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems (rsrc[i].offset >= rcvd_len)))
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems return (EIO);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems /* If there are any strings, terminate the string area. */
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems if (rcvd_len > sent_len)
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems *((char *)rsrc + rcvd_len - 1) = '\0';
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems return (0);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda}
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic int
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedadrctl_config_common(int cmd, int flags, drctl_rsrc_t *res,
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems int count, drctl_resp_t **rbuf, size_t *rsize, size_t *rq_size)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda{
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda int rv = 0;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda size_t size;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda char *bufp;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda switch (cmd) {
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_CPU_CONFIG_REQUEST:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_CPU_CONFIG_NOTIFY:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_CPU_UNCONFIG_REQUEST:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_CPU_UNCONFIG_NOTIFY:
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm case DRCTL_IO_UNCONFIG_REQUEST:
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm case DRCTL_IO_UNCONFIG_NOTIFY:
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm case DRCTL_IO_CONFIG_REQUEST:
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm case DRCTL_IO_CONFIG_NOTIFY:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_MEM_CONFIG_REQUEST:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_MEM_CONFIG_NOTIFY:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_MEM_UNCONFIG_REQUEST:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_MEM_UNCONFIG_NOTIFY:
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro rv = 0;
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro break;
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro default:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda rv = ENOTSUP;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda break;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda if (rv != 0) {
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems DR_DBG_CTL("%s: invalid cmd %d\n", __func__, cmd);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (rv);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda /*
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * If the operation is a FORCE, we don't send a message to
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * the daemon. But, the upstream clients still expect a
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * response, so generate a response with all ops 'allowed'.
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda if (flags == DRCTL_FLAG_FORCE) {
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems if (rbuf != NULL)
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems *rbuf = drctl_generate_resp(res,
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems count, rsize, DRCTL_STATUS_ALLOW);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (0);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems bufp = pack_message(cmd, flags, count, (void *)res, &size, rq_size);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda DR_DBG_CTL("%s: from pack_message, bufp = %p size %ld\n",
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems __func__, (void *)bufp, size);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems if (bufp == NULL || size == 0)
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems return (EINVAL);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems return (send_message(bufp, size, rbuf, rsize));
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda}
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda/*
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * Prepare for a reconfig operation.
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedaint
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedadrctl_config_init(int cmd, int flags, drctl_rsrc_t *res,
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems int count, drctl_resp_t **rbuf, size_t *rsize, drctl_cookie_t ck)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda{
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems static char inval_msg[] = "Invalid command format received.\n";
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems static char unsup_msg[] = "Unsuppported command received.\n";
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems static char unk_msg [] = "Failure reason unknown.\n";
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems static char rsp_msg [] = "Invalid response from "
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems "reconfiguration daemon.\n";
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems static char drd_msg [] = "Cannot communicate with reconfiguration "
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems "daemon (drd) in target domain.\n"
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems "drd(1M) SMF service may not be enabled.\n";
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems static char busy_msg [] = "Busy executing earlier command; "
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems "please try again later.\n";
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems size_t rq_size;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems char *ermsg;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda int rv;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems if (ck == 0) {
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems *rbuf = drctl_generate_err_resp(inval_msg, rsize);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (EINVAL);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda mutex_enter(&drctlp->drc_lock);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda if (drctlp->drc_busy != NULL) {
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda mutex_exit(&drctlp->drc_lock);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems *rbuf = drctl_generate_err_resp(busy_msg, rsize);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (EBUSY);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda DR_DBG_CTL("%s: cmd %d flags %d res %p count %d\n",
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems __func__, cmd, flags, (void *)res, count);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda /* Mark the link busy. Below we will fill in the actual cookie. */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctlp->drc_busy = (drctl_cookie_t)-1;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda mutex_exit(&drctlp->drc_lock);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems rv = drctl_config_common(cmd, flags, res, count, rbuf, rsize, &rq_size);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems if (rv == 0) {
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda /*
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems * If the upcall to the daemon returned successfully, we
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems * still need to validate the format of the returned msg.
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda */
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems if ((rv = verify_response(cmd,
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems count, *rbuf, rq_size, *rsize)) != 0) {
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems DR_DBG_KMEM("%s: free addr %p size %ld\n",
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems __func__, (void *)*rbuf, *rsize);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems kmem_free(*rbuf, *rsize);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems *rbuf = drctl_generate_err_resp(rsp_msg, rsize);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems drctlp->drc_busy = NULL;
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe cv_broadcast(&drctlp->drc_busy_cv);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems } else { /* message format is valid */
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems drctlp->drc_busy = ck;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems drctlp->drc_cmd = cmd;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems drctlp->drc_flags = flags;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda } else {
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems switch (rv) {
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems case ENOTSUP:
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems ermsg = unsup_msg;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems break;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems case EIO:
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems ermsg = drd_msg;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems break;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems default:
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems ermsg = unk_msg;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems break;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems }
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems *rbuf = drctl_generate_err_resp(ermsg, rsize);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctlp->drc_cmd = -1;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctlp->drc_flags = 0;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda drctlp->drc_busy = NULL;
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe cv_broadcast(&drctlp->drc_busy_cv);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (rv);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda}
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda/*
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * Complete a reconfig operation.
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedaint
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedadrctl_config_fini(drctl_cookie_t ck, drctl_rsrc_t *res, int count)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda{
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda int rv;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda int notify_cmd;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda int flags;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems size_t rq_size;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda mutex_enter(&drctlp->drc_lock);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda if (drctlp->drc_busy != ck) {
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda mutex_exit(&drctlp->drc_lock);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (EBUSY);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda mutex_exit(&drctlp->drc_lock);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda flags = drctlp->drc_flags;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda /*
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * Flip the saved _REQUEST command to its corresponding
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * _NOTIFY command.
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda switch (drctlp->drc_cmd) {
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_CPU_CONFIG_REQUEST:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda notify_cmd = DRCTL_CPU_CONFIG_NOTIFY;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda break;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_CPU_UNCONFIG_REQUEST:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda notify_cmd = DRCTL_CPU_UNCONFIG_NOTIFY;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda break;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm case DRCTL_IO_UNCONFIG_REQUEST:
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm notify_cmd = DRCTL_IO_UNCONFIG_NOTIFY;
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm break;
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm case DRCTL_IO_CONFIG_REQUEST:
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm notify_cmd = DRCTL_IO_CONFIG_NOTIFY;
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm break;
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_MEM_CONFIG_REQUEST:
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro notify_cmd = DRCTL_MEM_CONFIG_NOTIFY;
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro break;
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_MEM_UNCONFIG_REQUEST:
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro notify_cmd = DRCTL_MEM_UNCONFIG_NOTIFY;
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro break;
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda default:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda /* none of the above should have been accepted in _init */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda ASSERT(0);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda cmn_err(CE_CONT,
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda "drctl_config_fini: bad cmd %d\n", drctlp->drc_cmd);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda rv = EINVAL;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda goto done;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems rv = drctl_config_common(notify_cmd,
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems flags, res, count, NULL, 0, &rq_size);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedadone:
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe drctlp->drc_cmd = -1;
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe drctlp->drc_flags = 0;
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe drctlp->drc_busy = NULL;
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe cv_broadcast(&drctlp->drc_busy_cv);
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe return (rv);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda}
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic int
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedadrctl_ioctl(dev_t dev,
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda int cmd, intptr_t arg, int mode, cred_t *cred_p, int *rval_p)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda{
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda _NOTE(ARGUNUSED(dev, mode, cred_p, rval_p))
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda int rv;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda switch (cmd) {
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_IOCTL_CONNECT_SERVER:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda rv = i_drctl_ioctl(cmd, arg);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda break;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda default:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda rv = ENOTSUP;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda *rval_p = (rv == 0) ? 0 : -1;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (rv);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda}
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda/*
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * Accept a preformatted request from caller and send a message to
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * the daemon. A pointer to the daemon's response buffer is passed
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda * back in obufp, its size in osize.
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda */
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic int
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystemssend_message(void *msg, size_t size, drctl_resp_t **obufp, size_t *osize)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda{
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems drctl_resp_t *bufp;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems drctl_rsrc_t *rsrcs;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems size_t rsrcs_size;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda int rv;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems rv = i_drctl_send(msg, size, (void **)&rsrcs, &rsrcs_size);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems if ((rv == 0) && ((rsrcs == NULL) ||(rsrcs_size == 0)))
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems rv = EINVAL;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems if (rv == 0) {
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems if (obufp != NULL) {
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems ASSERT(osize != NULL);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems *osize =
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems offsetof(drctl_resp_t, resp_resources) + rsrcs_size;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems bufp =
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems kmem_alloc(*osize, KM_SLEEP);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems DR_DBG_KMEM("%s: alloc addr %p size %ld\n",
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems __func__, (void *)bufp, *osize);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems bufp->resp_type = DRCTL_RESP_OK;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems bcopy(rsrcs, bufp->resp_resources, rsrcs_size);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems *obufp = bufp;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems }
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems DR_DBG_KMEM("%s: free addr %p size %ld\n",
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems __func__, (void *)rsrcs, rsrcs_size);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems kmem_free(rsrcs, rsrcs_size);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems DR_DBG_KMEM("%s:free addr %p size %ld\n", __func__, msg, size);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda kmem_free(msg, size);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (rv);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda}
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaedastatic void *
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystemspack_message(int cmd,
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems int flags, int count, void *data, size_t *osize, size_t *data_size)
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda{
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm drd_msg_t *msgp = NULL;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda size_t hdr_size = offsetof(drd_msg_t, data);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda switch (cmd) {
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_CPU_CONFIG_REQUEST:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_CPU_CONFIG_NOTIFY:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_CPU_UNCONFIG_REQUEST:
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda case DRCTL_CPU_UNCONFIG_NOTIFY:
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems *data_size = count * sizeof (drctl_rsrc_t);
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm break;
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro case DRCTL_MEM_CONFIG_REQUEST:
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro case DRCTL_MEM_CONFIG_NOTIFY:
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro case DRCTL_MEM_UNCONFIG_REQUEST:
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro case DRCTL_MEM_UNCONFIG_NOTIFY:
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro *data_size = count * sizeof (drctl_rsrc_t);
9853d9e82e7a067a2b88dae2fd257207e6be5f94Jason Beloro break;
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm case DRCTL_IO_CONFIG_REQUEST:
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm case DRCTL_IO_CONFIG_NOTIFY:
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm case DRCTL_IO_UNCONFIG_REQUEST:
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm case DRCTL_IO_UNCONFIG_NOTIFY:
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems *data_size = sizeof (drctl_rsrc_t) +
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm strlen(((drctl_rsrc_t *)data)->res_dev_path);
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm break;
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm default:
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm cmn_err(CE_WARN,
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm "drctl: pack_message received invalid cmd %d", cmd);
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm break;
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
8fea755a86ff6c596183a4366bfbd59f1bfdfe55jm if (data_size) {
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems *osize = hdr_size + *data_size;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda msgp = kmem_alloc(*osize, KM_SLEEP);
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems DR_DBG_KMEM("%s: alloc addr %p size %ld\n",
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems __func__, (void *)msgp, *osize);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda msgp->cmd = cmd;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda msgp->count = count;
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda msgp->flags = flags;
99c7e85592b5d673f1469b2767f876710004dc23James Marks - Sun Microsystems bcopy(data, msgp->data, *data_size);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda }
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda return (msgp);
1d4b38e0077763e7c9b20768eacb841957e787bcrsmaeda}
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe/*
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe * Block DR operations
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe */
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroevoid
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroedrctl_block(void)
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe{
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe /* Wait for any in progress DR operation to complete */
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe mutex_enter(&drctlp->drc_lock);
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe while (drctlp->drc_busy != NULL)
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe (void) cv_wait_sig(&drctlp->drc_busy_cv, &drctlp->drc_lock);
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe /* Mark the link busy */
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe drctlp->drc_busy = (drctl_cookie_t)-1;
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe drctlp->drc_cmd = DRCTL_DRC_BLOCK;
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe drctlp->drc_flags = 0;
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe mutex_exit(&drctlp->drc_lock);
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe}
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe/*
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe * Unblock DR operations
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe */
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroevoid
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroedrctl_unblock(void)
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe{
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe /* Mark the link free */
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe mutex_enter(&drctlp->drc_lock);
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe drctlp->drc_cmd = -1;
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe drctlp->drc_flags = 0;
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe drctlp->drc_busy = NULL;
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe cv_broadcast(&drctlp->drc_busy_cv);
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe mutex_exit(&drctlp->drc_lock);
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroe}