common/os/ddifm.c

	ddifm.c revision eae2e508a8e70b1ec407b10bd068c080651bbe5c
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/*
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * CDDL HEADER START
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * The contents of this file are subject to the terms of the
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Common Development and Distribution License (the "License").
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * You may not use this file except in compliance with the License.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * or http://www.opensolaris.org/os/licensing.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * See the License for the specific language governing permissions
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * and limitations under the License.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * When distributing Covered Code, include this CDDL HEADER in each
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * If applicable, add the following below this CDDL HEADER, with the
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * fields enclosed by brackets "[]" replaced with your own identifying
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * information: Portions Copyright [yyyy] [name of copyright owner]
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * CDDL HEADER END
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/*
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Use is subject to license terms.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas#pragma ident   "%Z%%M% %I% %E% SMI"
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/*
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego * Fault Management for Device Drivers
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego * Device drivers wishing to participate in fault management may do so by
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego * first initializing their fault management state and capabilties via
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego * ddi_fm_init(). If the system supports the requested FM capabilities,
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego * the IO framework will intialize FM state and return a bit mask of the
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego * requested capabilities.
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego * If the system does not support the requested FM capabilities,
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego * the device driver must behave in accordance with the programming semantics
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * defined below for the capabilities returned from ddi_fm_init().
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego * ddi_fm_init() must be called at attach(9E) time and ddi_fm_fini() must be
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * called from detach(9E) to perform FM clean-up.
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego * Driver Fault Management Capabilities
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego * DDI_FM_NOT_CAPABLE
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  This is the default fault management capability for drivers.  Drivers
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  that implement no fault management capabilites or do not participate
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  in fault management activities have their FM capability bitmask set
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  to 0.
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego * DDI_FM_EREPORT_CAPABLE
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  When this capability bit is set, drivers are expected to generate error
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  report events via ddi_ereport_post() for the associated faults
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  that are diagnosed by the IO fault manager DE.  ddi_ereport_post()
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  may be called in any context subject to the constraints specified
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  by the interrupt iblock cookie  returned during initialization.
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright *
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright *  Error reports resulting from hardware component specific and common IO
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  fault and driver defects must be accompanied by an Eversholt fault
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  tree (.eft) by the Solaris fault manager (fmd(1M)) for
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  diagnosis.
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego * DDI_FM_ERRCB_CAPABLE
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  Device drivers are expected to implement and register an error
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  handler callback function.  ddi_fm_handler_register() and
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  ddi_fm_handler_unregister() must be
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  called in passive kernel context, typically during an attach(9E)
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  or detach(9E) operation.  When called by the FM IO framework,
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  the callback function should check for error conditions for the
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  hardware and software under its control.  All detected errors
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  should have ereport events generated for them.
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  Upon completion of the error handler callback, the driver should
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  return one of the following values:
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  #define DDI_FM_OK - no error was detected
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  #define DDI_FM_FATAL - a fatal error was detected
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  #define DDI_FM_NONFATAL - a non-fatal error was detected
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  #define DDI_FM_UNKNOWN - the error status is unknown
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  To insure single threaded access to error handling callbacks,
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  the device driver may use i_ddi_fm_handler_enter() and
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  i_ddi_fm_handler_exit() when entering and exiting the callback.
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego * DDI_FM_ACCCHK_CAPABLE/DDI_FM_DMACHK_CAPABLE
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  Device drivers are expected to set-up access and DMA handles
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  with FM-specific attributes designed to allow nexus parent
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  drivers to flag any errors seen during subsequent IO transactions.
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  Drivers must set the devacc_attr_acc_flag member of their
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  ddi_device_acc_attr_t structures to DDI_FLAGERR_ACC or DDI_CAUTIOUS_ACC.
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  For DMA transactions, driver must set the dma_attr_flags of
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  their ddi_dma_attr_t structures to DDI_DMA_FLAGERR.
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  Upon completion of an IO transaction, device drivers are expected
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  to check the status of host-side hardware access and device-side
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  dma completions by calling ddi_acc_err_check() or ddi_dma_err_check()
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  respectively. If the handle is associated with an error detected by
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  the nexus parent or FM IO framework, ddi_fm_error_t data (status, ena
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  and error expectation) is returned.  If status of DDI_FM_NONFATAL or
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  DDI_FM_FATAL is returned, the ena is valid and the expectation flag
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  will be set to 1 if the error was unexpected (i.e. not the result
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  of a peek or poke type operation).
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas *
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas *  ddi_acc_err_check() and ddi_dma_err_check() may be called in any
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  context subject to the constraints specified by the interrupt
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  iblock cookie returned during initialization.
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  Device drivers should generate an access (DDI_FM_IO_ACC) or dma
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *  (DDI_FM_IO_DMA) data path error report if DDI_FM_NONFATAL or
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas *  DDI_FM_FATAL is returned.
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego *
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego */
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego#include <sys/types.h>
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego#include <sys/sunddi.h>
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego#include <sys/sunndi.h>
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego#include <sys/kmem.h>
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas#include <sys/nvpair.h>
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas#include <sys/fm/protocol.h>
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego#include <sys/ndifm.h>
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright#include <sys/ddifm.h>
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright#include <sys/ddi_impldefs.h>
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright#include <sys/ddi_isa.h>
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright#include <sys/spl.h>
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright#include <sys/varargs.h>
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#include <sys/systm.h>
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#include <sys/disp.h>
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas#include <sys/atomic.h>
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#include <sys/errorq_impl.h>
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States#include <sys/kobj.h>
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States#include <sys/fm/util.h>
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States#include <sys/fm/io/ddi.h>
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego#define ERPT_CLASS_SZ   sizeof (DDI_IO_CLASS) + sizeof (FM_EREPORT_CLASS) + \
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego                DDI_MAX_ERPT_CLASS + 2
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego/* Globals */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwint default_dmacache_sz = DEFAULT_DMACACHE_SZ;
7f667e74610492ddbce8ce60f52ece95d2401949jose borregoint default_acccache_sz = DEFAULT_ACCCACHE_SZ;
7f667e74610492ddbce8ce60f52ece95d2401949jose borregoint ddi_system_fmcap = 0;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2easstatic struct i_ddi_fmkstat ddifm_kstat_template = {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    {"erpt_dropped", KSTAT_DATA_UINT64 },
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    {"fm_cache_full", KSTAT_DATA_UINT64 },
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States    {"fm_cache_grew", KSTAT_DATA_UINT64 },
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States    {"acc_err", KSTAT_DATA_UINT64 },
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego    {"dma_err", KSTAT_DATA_UINT64 }
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas};
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States/*
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States * Update the service state following the detection of an
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States * error.
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States */
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United Statesvoid
7f667e74610492ddbce8ce60f52ece95d2401949jose borregoddi_fm_service_impact(dev_info_t *dip, int svc_impact)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw{
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    uint64_t ena;
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas    char buf[FM_MAX_CLASS];
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    ena = fm_ena_generate(0, FM_ENA_FMT1);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    mutex_enter(&(DEVI(dip)->devi_lock));
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego    if (!DEVI_IS_DEVICE_OFFLINE(dip)) {
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego        switch (svc_impact) {
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego        case DDI_SERVICE_LOST:
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            DEVI_SET_DEVICE_DOWN(dip);
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas            (void) snprintf(buf, FM_MAX_CLASS, "%s.%s",
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright                DDI_FM_SERVICE_IMPACT, DDI_FM_SERVICE_LOST);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            ddi_fm_ereport_post(dip, buf, ena, DDI_NOSLEEP,
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas                FM_VERSION, DATA_TYPE_UINT8, FM_EREPORT_VERS0,
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego                NULL);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            break;
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States        case DDI_SERVICE_DEGRADED:
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States            DEVI_SET_DEVICE_DEGRADED(dip);
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States            if (DEVI_IS_DEVICE_DEGRADED(dip)) {
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego                (void) snprintf(buf, FM_MAX_CLASS, "%s.%s",
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego                    DDI_FM_SERVICE_IMPACT,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw                    DDI_FM_SERVICE_DEGRADED);
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego                ddi_fm_ereport_post(dip, buf, ena, DDI_NOSLEEP,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw                    FM_VERSION, DATA_TYPE_UINT8,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw                    FM_EREPORT_VERS0, NULL);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            } else if (DEVI_IS_DEVICE_DOWN(dip)) {
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego                (void) snprintf(buf, FM_MAX_CLASS, "%s.%s",
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego                    DDI_FM_SERVICE_IMPACT,
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego                    DDI_FM_SERVICE_LOST);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw                ddi_fm_ereport_post(dip, buf, ena, DDI_NOSLEEP,
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas                    FM_VERSION, DATA_TYPE_UINT8,
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright                    FM_EREPORT_VERS0, NULL);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            }
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas            break;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        case DDI_SERVICE_RESTORED:
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            DEVI_SET_DEVICE_UP(dip);
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas            (void) snprintf(buf, FM_MAX_CLASS, "%s.%s",
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas                DDI_FM_SERVICE_IMPACT, DDI_FM_SERVICE_RESTORED);
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States            ddi_fm_ereport_post(dip, buf, ena, DDI_NOSLEEP,
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States                FM_VERSION, DATA_TYPE_UINT8, FM_EREPORT_VERS0,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw                NULL);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            break;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        case DDI_SERVICE_UNAFFECTED:
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas            (void) snprintf(buf, FM_MAX_CLASS, "%s.%s",
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw                DDI_FM_SERVICE_IMPACT, DDI_FM_SERVICE_UNAFFECTED);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw            ddi_fm_ereport_post(dip, buf, ena, DDI_NOSLEEP,
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright                FM_VERSION, DATA_TYPE_UINT8, FM_EREPORT_VERS0,
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright                NULL);
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright            break;
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright        default:
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright            break;
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright        }
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright    }
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright    mutex_exit(&(DEVI(dip)->devi_lock));
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright}
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wrightstatic int
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wrighterpt_post_sleep(dev_info_t *dip, const char *error_class, uint64_t ena,
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright    uint8_t version, va_list ap)
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright{
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright    char *devid, *name;
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States    char device_path[MAXPATHLEN];
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright    char ddi_error_class[ERPT_CLASS_SZ];
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright    nvlist_t *ereport, *detector = NULL;
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright    /*
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright     * Driver defect - should not call with DDI_SLEEP while
f96bd5c800e73e351b0b6e4bd7f00b578dad29bbAlan Wright     * in interrupt context
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego     */
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego    if (servicing_interrupt()) {
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego        i_ddi_drv_ereport_post(dip, DVR_ECONTEXT, NULL, DDI_NOSLEEP);
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego        return (1);
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego    }
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego    if ((ereport = fm_nvlist_create(NULL)) == NULL)
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego        return (1);
89dc44ce9705974a8bc4a39f1e878a0491a5be61jose borrego
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas    /*
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw     * Use the dev_path/devid for this device instance.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw     */
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    detector = fm_nvlist_create(NULL);
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    if (dip == ddi_root_node()) {
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright        device_path[0] = '/';
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright        device_path[1] = '\0';
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    } else {
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright        (void) ddi_pathname(dip, device_path);
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    }
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    if (ddi_prop_lookup_string(DDI_DEV_T_NONE, dip,
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright        DDI_PROP_DONTPASS, DEVID_PROP_NAME, &devid) == DDI_SUCCESS) {
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright        fm_fmri_dev_set(detector, FM_DEV_SCHEME_VERSION, NULL,
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright            device_path, devid);
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego        ddi_prop_free(devid);
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    } else {
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego        fm_fmri_dev_set(detector, FM_DEV_SCHEME_VERSION, NULL,
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego            device_path, NULL);
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego    }
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    if (ena == 0)
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego        ena = fm_ena_generate(0, FM_ENA_FMT1);
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego    (void) snprintf(ddi_error_class, ERPT_CLASS_SZ, "%s.%s",
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego        DDI_IO_CLASS, error_class);
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego    fm_ereport_set(ereport, version, ddi_error_class,
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright        ena, detector, NULL);
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    name = va_arg(ap, char *);
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    (void) i_fm_payload_set(ereport, name, ap);
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    fm_ereport_post(ereport, EVCH_SLEEP);
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    fm_nvlist_destroy(ereport, FM_NVA_FREE);
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    fm_nvlist_destroy(detector, FM_NVA_FREE);
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    return (0);
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright}
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wrightstatic int
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wrighterpt_post_nosleep(dev_info_t *dip, struct i_ddi_fmhdl *fmhdl,
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    const char *error_class, uint64_t ena, uint8_t version, va_list ap)
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright{
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    char *name;
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    char device_path[MAXPATHLEN];
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    char ddi_error_class[ERPT_CLASS_SZ];
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    nvlist_t *ereport, *detector;
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    nv_alloc_t *nva;
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright    errorq_elem_t *eqep;
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego    eqep = errorq_reserve(fmhdl->fh_errorq);
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego    if (eqep == NULL)
29bd28862cfb8abbd3a0f0a4b17e08bbc3652836Alan Wright        return (1);
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego    ereport = errorq_elem_nvl(fmhdl->fh_errorq, eqep);
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego    nva = errorq_elem_nva(fmhdl->fh_errorq, eqep);
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego
7f667e74610492ddbce8ce60f52ece95d2401949jose borrego    ASSERT(ereport);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    ASSERT(nva);
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States    /*
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw     * Use the dev_path/devid for this device instance.
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States     */
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas    detector = fm_nvlist_create(nva);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    if (dip == ddi_root_node()) {
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States        device_path[0] = '/';
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States        device_path[1] = '\0';
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States    } else {
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States        (void) ddi_pathname(dip, device_path);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    }
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States    fm_fmri_dev_set(detector, FM_DEV_SCHEME_VERSION, NULL,
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States        device_path, NULL);
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    if (ena == 0)
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw        ena = fm_ena_generate(0, FM_ENA_FMT1);
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas    (void) snprintf(ddi_error_class, ERPT_CLASS_SZ, "%s.%s",
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States        DDI_IO_CLASS, error_class);
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas    fm_ereport_set(ereport, version, ddi_error_class,
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas        ena, detector, NULL);
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States    name = va_arg(ap, char *);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    (void) i_fm_payload_set(ereport, name, ap);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    errorq_commit(fmhdl->fh_errorq, eqep, ERRORQ_ASYNC);
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States    return (0);
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States}
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwvoid
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United Statesi_ddi_drv_ereport_post(dev_info_t *dip, const char *error_class,
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States    nvlist_t *errp, int sflag)
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States{
9fb67ea305c66b6a297583b9b0db6796b0dfe497afshin salek ardakani - Sun Microsystems - Irvine United States    int i;
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas    int depth;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    char classp[DDI_DVR_MAX_CLASS];
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    caddr_t stkp;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    char *buf;
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas    char **stkpp;
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas    char *sym;
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas    pc_t stack[DDI_FM_STKDEPTH];
6537f381d2d9e7b4e2f7b29c3e7a3f13be036f2eas    ulong_t off;
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    dev_info_t *root_dip = ddi_root_node();
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw    if (!DDI_FM_EREPORT_CAP(ddi_fm_capable(root_dip)))
        return;

    (void) snprintf(classp, DDI_DVR_MAX_CLASS, "%s%s", DVR_ERPT,
        error_class);

    if (sflag == DDI_SLEEP) {
        depth = getpcstack(stack, DDI_FM_STKDEPTH);

        /* Allocate array of char * for nvlist payload */
        stkpp = (char **)kmem_alloc(depth * sizeof (char *), KM_SLEEP);

        /*
         * Allocate temporary 64-bit aligned buffer for stack
         * symbol strings
         */
        buf = kmem_alloc(depth * DDI_FM_SYM_SZ, KM_SLEEP);

        stkp = buf;
        for (i = 0; i < depth; ++i) {
            sym = kobj_getsymname(stack[i], &off);
            (void) snprintf(stkp, DDI_FM_SYM_SZ,
                "\t%s+%lx\n", sym ? sym : "?", off);
            stkpp[i] = stkp;
            stkp += DDI_FM_SYM_SZ;
        }

        if (errp)
            ddi_fm_ereport_post(root_dip,
                classp, fm_ena_generate(0, FM_ENA_FMT1), sflag,
                FM_VERSION, DATA_TYPE_UINT8, 0,
                DVR_NAME, DATA_TYPE_STRING, ddi_driver_name(dip),
                DVR_STACK_DEPTH, DATA_TYPE_UINT32, depth,
                DVR_STACK, DATA_TYPE_STRING_ARRAY, depth, stkpp,
                DVR_ERR_SPECIFIC, DATA_TYPE_NVLIST, errp, NULL);
        else
            ddi_fm_ereport_post(root_dip,
                classp, fm_ena_generate(0, FM_ENA_FMT1), sflag,
                FM_VERSION, DATA_TYPE_UINT8, 0,
                DVR_NAME, DATA_TYPE_STRING, ddi_driver_name(dip),
                DVR_STACK_DEPTH, DATA_TYPE_UINT32, depth,
                DVR_STACK, DATA_TYPE_STRING_ARRAY, depth, stkpp,
                NULL);

        kmem_free(stkpp, depth * sizeof (char *));
        kmem_free(buf, depth * DDI_FM_SYM_SZ);

    } else {
        if (errp)
            ddi_fm_ereport_post(root_dip,
                classp, fm_ena_generate(0, FM_ENA_FMT1), sflag,
                FM_VERSION, DATA_TYPE_UINT8, 0,
                DVR_NAME, DATA_TYPE_STRING, ddi_driver_name(dip),
                DVR_ERR_SPECIFIC, DATA_TYPE_NVLIST, errp, NULL);
        else
            ddi_fm_ereport_post(root_dip,
                classp, fm_ena_generate(0, FM_ENA_FMT1), sflag,
                FM_VERSION, DATA_TYPE_UINT8, 0,
                DVR_NAME, DATA_TYPE_STRING, ddi_driver_name(dip),
                NULL);
    }
}

/*
 * Generate an error report for consumption by the Solaris Fault Manager,
 * fmd(1M).  Valid ereport classes are defined in /usr/include/sys/fm/io.  The
 * ENA should be set if this error is a result of an error status returned
 * from ddi_dma_err_check() or ddi_acc_err_check().  Otherwise, an ENA
 * value of 0 is appropriate.
 *
 * If sflag == DDI_NOSLEEP, ddi_fm_ereport_post () may be called
 * from user, kernel, interrupt or high-interrupt context.  Otherwise,
 * ddi_fm_ereport_post() must be called from user or kernel context.
 */
void
ddi_fm_ereport_post(dev_info_t *dip, const char *error_class, uint64_t ena,
    int sflag, ...)
{
    int ret;
    char *name;
    data_type_t type;
    uint8_t version;
    va_list ap;
    struct i_ddi_fmhdl *fmhdl = DEVI(dip)->devi_fmhdl;

    if (!DDI_FM_EREPORT_CAP(ddi_fm_capable(dip)))
        return;

    ASSERT(fmhdl);

    va_start(ap, sflag);

    /* First payload tuple should be the version */
    name = va_arg(ap, char *);
    type = va_arg(ap, data_type_t);
    version = va_arg(ap, uint_t);
    if (strcmp(name, FM_VERSION) != 0 && type != DATA_TYPE_UINT8) {
        va_end(ap);
        i_ddi_drv_ereport_post(dip, DVR_EVER, NULL, sflag);
        return;
    }

    if (sflag == DDI_SLEEP)
        ret = erpt_post_sleep(dip, error_class, ena, version, ap);
    else
        ret = erpt_post_nosleep(dip, fmhdl, error_class, ena, version,
            ap);
    va_end(ap);

    if (ret != 0)
        atomic_add_64(&fmhdl->fh_kstat.fek_erpt_dropped.value.ui64, 1);

}

/*
 * Driver error handling entry.  Prevents multiple simultaneous calls into
 * driver error handling callback.
 *
 * May be called from a context consistent with the iblock_cookie returned
 * in ddi_fm_init().
 */
void
i_ddi_fm_handler_enter(dev_info_t *dip)
{
    struct i_ddi_fmhdl *hdl = DEVI(dip)->devi_fmhdl;

    mutex_enter(&hdl->fh_lock);
    hdl->fh_lock_owner = curthread;
}

/*
 * Driver error handling exit.
 *
 * May be called from a context consistent with the iblock_cookie returned
 * in ddi_fm_init().
 */
void
i_ddi_fm_handler_exit(dev_info_t *dip)
{
    struct i_ddi_fmhdl *hdl = DEVI(dip)->devi_fmhdl;

    hdl->fh_lock_owner = NULL;
    mutex_exit(&hdl->fh_lock);
}

boolean_t
i_ddi_fm_handler_owned(dev_info_t *dip)
{
    struct i_ddi_fmhdl *hdl = DEVI(dip)->devi_fmhdl;

    return (hdl->fh_lock_owner == curthread);
}

/*
 * Register a fault manager error handler for this device instance
 *
 * This function must be called from a driver's attach(9E) routine.
 */
void
ddi_fm_handler_register(dev_info_t *dip, ddi_err_func_t handler,
    void *impl_data)
{
    dev_info_t *pdip;
    struct i_ddi_fmhdl *pfmhdl;
    struct i_ddi_errhdl *new_eh;
    struct i_ddi_fmtgt *tgt;

    /*
     * Check for proper calling context.
     * The DDI configuration framework does not support
     * DR states to allow checking for proper invocation
     * from a DDI_ATTACH or DDI_RESUME.  This limits context checking
     * to interrupt only.
     */
    if (servicing_interrupt()) {
        i_ddi_drv_ereport_post(dip, DVR_ECONTEXT, NULL, DDI_NOSLEEP);
        return;
    }

    if (dip == ddi_root_node())
        pdip = dip;
    else
        pdip = (dev_info_t *)DEVI(dip)->devi_parent;

    ASSERT(pdip);

    if (!(DDI_FM_ERRCB_CAP(ddi_fm_capable(dip)) &&
        DDI_FM_ERRCB_CAP(ddi_fm_capable(pdip)))) {
        i_ddi_drv_ereport_post(dip, DVR_EFMCAP, NULL, DDI_SLEEP);
        return;
    }

    new_eh = kmem_zalloc(sizeof (struct i_ddi_errhdl), KM_SLEEP);
    new_eh->eh_func = handler;
    new_eh->eh_impl = impl_data;

    /* Add dip to parent's target list of registered error handlers */
    tgt = kmem_alloc(sizeof (struct i_ddi_fmtgt), KM_SLEEP);
    tgt->ft_dip = dip;
    tgt->ft_errhdl = new_eh;

    i_ddi_fm_handler_enter(pdip);
    pfmhdl = DEVI(pdip)->devi_fmhdl;
    ASSERT(pfmhdl);
    tgt->ft_next = pfmhdl->fh_tgts;
    pfmhdl->fh_tgts = tgt;
    i_ddi_fm_handler_exit(pdip);
}

/*
 * Unregister a fault manager error handler for this device instance
 *
 * This function must be called from a drivers attach(9E) or detach(9E)
 * routine.
 */
void
ddi_fm_handler_unregister(dev_info_t *dip)
{
    dev_info_t *pdip;
    struct i_ddi_fmhdl *pfmhdl;
    struct i_ddi_fmtgt *tgt, **ptgt;

    /*
     * Check for proper calling context.
     * The DDI configuration framework does not support
     * DR states to allow checking for proper invocation
     * from a DDI_DETACH or DDI_SUSPEND.  This limits context checking
     * to interrupt only.
     */
    if (servicing_interrupt()) {
        i_ddi_drv_ereport_post(dip, DVR_ECONTEXT, NULL, DDI_NOSLEEP);
        return;
    }

    if (dip == ddi_root_node())
        pdip = dip;
    else
        pdip = (dev_info_t *)DEVI(dip)->devi_parent;

    ASSERT(pdip);

    if (!(DDI_FM_ERRCB_CAP(ddi_fm_capable(dip)) &&
        DDI_FM_ERRCB_CAP(ddi_fm_capable(pdip)))) {
        i_ddi_drv_ereport_post(dip, DVR_EFMCAP, NULL, DDI_SLEEP);
        return;
    }

    i_ddi_fm_handler_enter(pdip);
    pfmhdl = DEVI(pdip)->devi_fmhdl;
    ASSERT(pfmhdl);
    ptgt = &pfmhdl->fh_tgts;
    for (tgt = pfmhdl->fh_tgts; tgt != NULL; tgt = tgt->ft_next) {
        if (dip == tgt->ft_dip) {
            *ptgt = tgt->ft_next;
            kmem_free(tgt->ft_errhdl, sizeof (struct i_ddi_errhdl));
            kmem_free(tgt, sizeof (struct i_ddi_fmtgt));
            break;
        }
        ptgt = &tgt->ft_next;
    }
    i_ddi_fm_handler_exit(pdip);


}

/*
 * Initialize Fault Management capabilities for this device instance (dip).
 * When called with the following capabilities, data structures neccessary
 * for fault management activities are allocated and initialized.
 *
 *  DDI_FM_EREPORT_CAPABLE - initialize ereport errorq and ereport
 *              capable driver property.
 *
 *  DDI_FM_ERRCB_CAPABLE - check with parent for ability to register
 *              an error handler.
 *
 *  DDI_FM_ACCCHK_CAPABLE - initialize access handle cache and acc-chk
 *              driver property
 *
 *  DDI_FM_DMACHK_CAPABLE - initialize dma handle cache and dma-chk
 *              driver property
 *
 * A driver's FM capability level may not exceed that of its parent or
 * system-wide FM capability.  The available capability level for this
 * device instance is returned in *fmcap.
 *
 * This function must be called from a driver's attach(9E) entry point.
 */
void
ddi_fm_init(dev_info_t *dip, int *fmcap, ddi_iblock_cookie_t *ibcp)
{
    struct dev_info *devi = DEVI(dip);
    struct i_ddi_fmhdl *fmhdl;
    ddi_iblock_cookie_t ibc;
    int pcap, newcap = DDI_FM_NOT_CAPABLE;

    if (!DEVI_IS_ATTACHING(dip)) {
        i_ddi_drv_ereport_post(dip, DVR_ECONTEXT, NULL, DDI_NOSLEEP);
        *fmcap = DDI_FM_NOT_CAPABLE;
        return;
    }

    if (DDI_FM_DEFAULT_CAP(*fmcap))
        return;

    /*
     * Check parent for supported FM level
     * and correct error handling PIL
     */
    if (dip != ddi_root_node()) {

        /*
         * Initialize the default ibc.  The parent may change it
         * depending upon its capabilities.
         */
        ibc = (ddi_iblock_cookie_t)ipltospl(FM_ERR_PIL);

        pcap = i_ndi_busop_fm_init(dip, *fmcap, &ibc);
    } else {
        pcap = *fmcap;
        ibc = *ibcp;
    }

    /* Initialize the per-device instance FM handle */
    fmhdl = kmem_zalloc(sizeof (struct i_ddi_fmhdl), KM_SLEEP);

    if ((fmhdl->fh_ksp = kstat_create((char *)ddi_driver_name(dip),
        ddi_get_instance(dip), "fm", "misc",
        KSTAT_TYPE_NAMED, sizeof (struct i_ddi_fmkstat) /
        sizeof (kstat_named_t), KSTAT_FLAG_VIRTUAL)) == NULL) {
        mutex_destroy(&fmhdl->fh_lock);
        kmem_free(fmhdl, sizeof (struct i_ddi_fmhdl));
        *fmcap = DDI_FM_NOT_CAPABLE;
        return;
    }

    bcopy(&ddifm_kstat_template, &fmhdl->fh_kstat,
        sizeof (struct i_ddi_fmkstat));
    fmhdl->fh_ksp->ks_data = &fmhdl->fh_kstat;
    fmhdl->fh_ksp->ks_private = fmhdl;
    kstat_install(fmhdl->fh_ksp);

    fmhdl->fh_dma_cache = NULL;
    fmhdl->fh_acc_cache = NULL;
    fmhdl->fh_tgts = NULL;
    fmhdl->fh_dip = dip;
    fmhdl->fh_ibc = ibc;
    mutex_init(&fmhdl->fh_lock, NULL, MUTEX_DRIVER, fmhdl->fh_ibc);
    devi->devi_fmhdl = fmhdl;

    /*
     * Initialize support for ereport generation
     */
    if (DDI_FM_EREPORT_CAP(*fmcap) && DDI_FM_EREPORT_CAP(pcap)) {
        fmhdl->fh_errorq = ereport_errorq;
        if (ddi_getprop(DDI_DEV_T_NONE, dip, DDI_PROP_DONTPASS,
            "fm-ereport-capable", 0) == 0)
            (void) ddi_prop_create(DDI_DEV_T_NONE, dip,
                DDI_PROP_CANSLEEP, "fm-ereport-capable", NULL, 0);

        newcap |= DDI_FM_EREPORT_CAPABLE;
    }

    /*
     * Need cooperation of the parent for error handling
     */

    if (DDI_FM_ERRCB_CAP(*fmcap) && DDI_FM_ERRCB_CAP(pcap)) {
        if (ddi_getprop(DDI_DEV_T_NONE, dip, DDI_PROP_DONTPASS,
            "fm-errcb-capable", 0) == 0)
            (void) ddi_prop_create(DDI_DEV_T_NONE, dip,
                DDI_PROP_CANSLEEP, "fm-errcb-capable", NULL, 0);

        newcap |= DDI_FM_ERRCB_CAPABLE;
    }

    /*
     * Support for DMA and Access error handling
     */

    if (DDI_FM_DMA_ERR_CAP(*fmcap) && DDI_FM_DMA_ERR_CAP(pcap)) {
        i_ndi_fmc_create(&fmhdl->fh_dma_cache, 2, ibc);

        /* Set-up dma chk capability prop */
        if (ddi_getprop(DDI_DEV_T_NONE, dip, DDI_PROP_DONTPASS,
            "fm-dmachk-capable", 0) == 0)
            (void) ddi_prop_create(DDI_DEV_T_NONE, dip,
                DDI_PROP_CANSLEEP, "fm-dmachk-capable", NULL, 0);

        newcap |= DDI_FM_DMACHK_CAPABLE;
    }

    if (DDI_FM_ACC_ERR_CAP(*fmcap) && DDI_FM_ACC_ERR_CAP(pcap)) {
        i_ndi_fmc_create(&fmhdl->fh_acc_cache, 2, ibc);
        /* Set-up dma chk capability prop */
        if (ddi_getprop(DDI_DEV_T_NONE, dip, DDI_PROP_DONTPASS,
            "fm-accchk-capable", 0) == 0)
            (void) ddi_prop_create(DDI_DEV_T_NONE, dip,
                DDI_PROP_CANSLEEP, "fm-accchk-capable", NULL, 0);

        newcap |= DDI_FM_ACCCHK_CAPABLE;
    }

    /*
     * Return the capability support available
     * to this driver instance
     */
    fmhdl->fh_cap = newcap;
    *fmcap = newcap;

    if (ibcp != NULL)
        *ibcp = ibc;
}

/*
 * Finalize Fault Management activities for this device instance.
 * Outstanding IO transaction must be completed prior to calling
 * this routine.  All previously allocated resources and error handler
 * registration are cleared and deallocated.
 *
 * This function must be called from a driver's detach(9E) entry point.
 */
void
ddi_fm_fini(dev_info_t *dip)
{
    struct i_ddi_fmhdl *fmhdl = DEVI(dip)->devi_fmhdl;

    ASSERT(fmhdl);

    if (!(DEVI_IS_DETACHING(dip) || DEVI_IS_ATTACHING(dip))) {
        i_ddi_drv_ereport_post(dip, DVR_ECONTEXT, NULL, DDI_NOSLEEP);
        return;
    }

    kstat_delete(fmhdl->fh_ksp);

    if (DDI_FM_EREPORT_CAP(fmhdl->fh_cap)) {
        (void) ddi_prop_remove(DDI_DEV_T_NONE, dip,
            "fm-ereport-capable");
    }

    if (dip != ddi_root_node()) {
        if (DDI_FM_ERRCB_CAP(fmhdl->fh_cap)) {
            ddi_fm_handler_unregister(dip);
            (void) ddi_prop_remove(DDI_DEV_T_NONE, dip,
                "fm-errcb-capable");
        }

        if (DDI_FM_DMA_ERR_CAP(fmhdl->fh_cap) ||
            DDI_FM_ACC_ERR_CAP(fmhdl->fh_cap)) {
            if (fmhdl->fh_dma_cache != NULL) {
                i_ndi_fmc_destroy(fmhdl->fh_dma_cache);
                (void) ddi_prop_remove(DDI_DEV_T_NONE, dip,
                    "fm-dmachk-capable");
            }
            if (fmhdl->fh_acc_cache != NULL) {
                i_ndi_fmc_destroy(fmhdl->fh_acc_cache);
                (void) ddi_prop_remove(DDI_DEV_T_NONE, dip,
                    "fm-accachk-capable");
            }
        }

        i_ndi_busop_fm_fini(dip);
    }

    kmem_free(fmhdl, sizeof (struct i_ddi_fmhdl));
    DEVI(dip)->devi_fmhdl = NULL;
}

/*
 * Return the fault management capability level for this device instance.
 *
 * This function may be called from user, kernel, or interrupt context.
 */
int
ddi_fm_capable(dev_info_t *dip)
{
    struct i_ddi_fmhdl *fmhdl = DEVI(dip)->devi_fmhdl;

    if (fmhdl == NULL)
        return (DDI_FM_NOT_CAPABLE);

    return (fmhdl->fh_cap);
}

/*
 * Routines to set and get error information for/from an access or dma handle
 *
 * These routines may be called from user, kernel, and interrupt contexts.
 */
void
ddi_fm_acc_err_get(ddi_acc_handle_t handle, ddi_fm_error_t *de, int version)
{
    ndi_err_t *errp;

    if (handle == NULL)
        return;

    if (version != DDI_FME_VER0 && version != DDI_FME_VER1) {
        ddi_acc_hdl_t *hp = impl_acc_hdl_get(handle);

        i_ddi_drv_ereport_post(hp->ah_dip, DVR_EVER, NULL, DDI_NOSLEEP);
        cmn_err(CE_PANIC, "ddi_fm_acc_err_get: "
            "Invalid driver version\n");
    }

    errp = ((ddi_acc_impl_t *)handle)->ahi_err;
    de->fme_status = errp->err_status;
    de->fme_ena = errp->err_ena;
    de->fme_flag = errp->err_expected;
    de->fme_acc_handle = handle;
}

void
ddi_fm_dma_err_get(ddi_dma_handle_t handle, ddi_fm_error_t *de, int version)
{
    ndi_err_t *errp;

    if (handle == NULL)
        return;

    if (version != DDI_FME_VER0 && version != DDI_FME_VER1) {
        i_ddi_drv_ereport_post(((ddi_dma_impl_t *)handle)->dmai_rdip,
            DVR_EVER, NULL, DDI_NOSLEEP);
        cmn_err(CE_PANIC, "ddi_fm_dma_err_get: "
            "Invalid driver version\n");
    }

    errp = &((ddi_dma_impl_t *)handle)->dmai_error;

    de->fme_status = errp->err_status;
    de->fme_ena = errp->err_ena;
    de->fme_flag = errp->err_expected;
    de->fme_dma_handle = handle;
}

void
ddi_fm_acc_err_clear(ddi_acc_handle_t handle, int version)
{
    ndi_err_t *errp;

    if (handle == NULL)
        return;

    if (version != DDI_FME_VER0 && version != DDI_FME_VER1) {
        ddi_acc_hdl_t *hp = impl_acc_hdl_get(handle);

        i_ddi_drv_ereport_post(hp->ah_dip, DVR_EVER, NULL, DDI_NOSLEEP);
        cmn_err(CE_PANIC, "ddi_fm_acc_err_clear: "
            "Invalid driver version\n");
    }

    errp = ((ddi_acc_impl_t *)handle)->ahi_err;
    errp->err_status = DDI_FM_OK;
    errp->err_ena = 0;
    errp->err_expected = DDI_FM_ERR_UNEXPECTED;
}

void
ddi_fm_dma_err_clear(ddi_dma_handle_t handle, int version)
{
    ndi_err_t *errp;

    if (handle == NULL)
        return;

    if (version != DDI_FME_VER0 && version != DDI_FME_VER1) {
        i_ddi_drv_ereport_post(((ddi_dma_impl_t *)handle)->dmai_rdip,
            DVR_EVER, NULL, DDI_NOSLEEP);
        cmn_err(CE_PANIC, "ddi_fm_dma_err_clear: "
            "Invalid driver version\n");
    }

    errp = &((ddi_dma_impl_t *)handle)->dmai_error;

    errp->err_status = DDI_FM_OK;
    errp->err_ena = 0;
    errp->err_expected = DDI_FM_ERR_UNEXPECTED;
}

void
i_ddi_fm_acc_err_set(ddi_acc_handle_t handle, uint64_t ena, int status,
    int flag)
{
    ddi_acc_hdl_t *hdlp = impl_acc_hdl_get(handle);
    ddi_acc_impl_t *i_hdlp = (ddi_acc_impl_t *)handle;
    struct i_ddi_fmhdl *fmhdl = DEVI(hdlp->ah_dip)->devi_fmhdl;

    i_hdlp->ahi_err->err_ena = ena;
    i_hdlp->ahi_err->err_status = status;
    i_hdlp->ahi_err->err_expected = flag;
    atomic_add_64(&fmhdl->fh_kstat.fek_acc_err.value.ui64, 1);
}

void
i_ddi_fm_dma_err_set(ddi_dma_handle_t handle, uint64_t ena, int status,
    int flag)
{
    ddi_dma_impl_t *hdlp = (ddi_dma_impl_t *)handle;
    struct i_ddi_fmhdl *fmhdl = DEVI(hdlp->dmai_rdip)->devi_fmhdl;

    hdlp->dmai_error.err_ena = ena;
    hdlp->dmai_error.err_status = status;
    hdlp->dmai_error.err_expected = flag;
    atomic_add_64(&fmhdl->fh_kstat.fek_dma_err.value.ui64, 1);
}

ddi_fmcompare_t
i_ddi_fm_acc_err_cf_get(ddi_acc_handle_t handle)
{
    ddi_acc_impl_t *i_hdlp = (ddi_acc_impl_t *)handle;

    return (i_hdlp->ahi_err->err_cf);
}

ddi_fmcompare_t
i_ddi_fm_dma_err_cf_get(ddi_dma_handle_t handle)
{
    ddi_dma_impl_t *hdlp = (ddi_dma_impl_t *)handle;

    return (hdlp->dmai_error.err_cf);
}