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| Current File : //usr/src/sys/dev/isci/isci_domain.c |
/*-
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/isci/isci_domain.c 233784 2012-04-02 16:30:13Z jimharris $");
#include <dev/isci/isci.h>
#include <cam/cam_periph.h>
#include <cam/cam_xpt_periph.h>
#include <dev/isci/scil/scif_domain.h>
#include <dev/isci/scil/scif_remote_device.h>
#include <dev/isci/scil/scif_controller.h>
#include <dev/isci/scil/scif_user_callback.h>
/**
* @brief This callback method informs the framework user that something
* in the supplied domain has changed (e.g. a device was added or
* removed).
*
* This callback is called by the framework outside of discovery or
* target reset processes. Specifically, domain changes occurring
* during these processes are handled by the framework. For example,
* in the case of Serial Attached SCSI, reception of a BROADCAST (CHANGE)
* during discovery will cause discovery to restart. Thus, discovery
* does not complete until all BCNs are processed. Note, during controller
* stopping/reset process, the framework user should not expect this call
* back.
*
* @param[in] controller This parameter specifies the controller object
* with which this callback is associated.
* @param[in] domain This parameter specifies the domain object with
* which this callback is associated.
*
* @return none
*/
void
scif_cb_domain_change_notification(SCI_CONTROLLER_HANDLE_T controller,
SCI_DOMAIN_HANDLE_T domain)
{
struct ISCI_CONTROLLER *isci_controller =
(struct ISCI_CONTROLLER *)sci_object_get_association(controller);
/* When the controller start is complete, we will explicitly discover
* all of the domains then. This is because SCIF will not allow
* any I/O to start until the controller is ready, meaning internal SMP
* requests triggered by domain discovery won't work until the controller
* is ready.
*/
if (isci_controller->is_started == TRUE)
scif_domain_discover(domain,
scif_domain_get_suggested_discover_timeout(domain),
DEVICE_TIMEOUT);
}
/**
* @brief This callback method informs the framework user that a previously
* requested discovery operation on the domain has completed.
*
* @param[in] controller This parameter specifies the controller object
* with which this callback is associated.
* @param[in] domain This parameter specifies the domain object with
* which this callback is associated.
* @param[in] completion_status This parameter indicates the results of the
* discovery operation.
*
* @return none
*/
void
scif_cb_domain_discovery_complete(SCI_CONTROLLER_HANDLE_T controller,
SCI_DOMAIN_HANDLE_T domain, SCI_STATUS completion_status)
{
if(completion_status != SCI_SUCCESS)
isci_log_message(0, "ISCI",
"scif_cb_domain_discovery_complete status = 0x%x\n",
completion_status);
isci_controller_domain_discovery_complete(
(struct ISCI_CONTROLLER *)sci_object_get_association(controller),
(struct ISCI_DOMAIN *) sci_object_get_association(domain));
}
/**
* @brief This callback method informs the framework user that a previously
* requested reset operation on the domain has completed.
*
* @param[in] controller This parameter specifies the controller object
* with which this callback is associated.
* @param[in] domain This parameter specifies the domain object with
* which this callback is associated.
* @param[in] completion_status This parameter indicates the results of the
* reset operation.
*
* @return none
*/
void
scif_cb_domain_reset_complete(SCI_CONTROLLER_HANDLE_T controller,
SCI_DOMAIN_HANDLE_T domain, SCI_STATUS completion_status)
{
}
/**
* @brief This callback method informs the framework user that the domain
* is ready and capable of processing IO requests for devices found
* inside it.
*
* @param[in] controller This parameter specifies the controller object
* with which this callback is associated.
* @param[in] domain This parameter specifies the domain object with
* which this callback is associated.
*
* @return none
*/
void
scif_cb_domain_ready(SCI_CONTROLLER_HANDLE_T controller,
SCI_DOMAIN_HANDLE_T domain)
{
uint32_t i;
struct ISCI_DOMAIN *isci_domain = sci_object_get_association(domain);
struct ISCI_CONTROLLER *isci_controller =
sci_object_get_association(controller);
for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) {
struct ISCI_REMOTE_DEVICE *remote_device =
isci_controller->remote_device[i];
if (remote_device != NULL &&
remote_device->domain == isci_domain)
isci_remote_device_release_device_queue(remote_device);
}
}
/**
* @brief This callback method informs the framework user that the domain
* is no longer ready. Thus, it is incapable of processing IO
* requests for devices found inside it.
*
* @param[in] controller This parameter specifies the controller object
* with which this callback is associated.
* @param[in] domain This parameter specifies the domain object with
* which this callback is associated.
*
* @return none
*/
void
scif_cb_domain_not_ready(SCI_CONTROLLER_HANDLE_T controller,
SCI_DOMAIN_HANDLE_T domain)
{
}
/**
* @brief This callback method informs the framework user that a new
* direct attached device was found in the domain.
*
* @param[in] controller This parameter specifies the controller object
* with which this callback is associated.
* @param[in] domain This parameter specifies the domain object with
* which this callback is associated.
* @param[in] sas_address This parameter specifies the SAS address of
* the new device.
* @param[in] protocols This parameter specifies the protocols
* supported by the newly discovered device.
*
* @return none
*/
void
scif_cb_domain_da_device_added(SCI_CONTROLLER_HANDLE_T controller,
SCI_DOMAIN_HANDLE_T domain, SCI_SAS_ADDRESS_T *sas_address,
SCI_SAS_IDENTIFY_ADDRESS_FRAME_PROTOCOLS_T *protocols)
{
struct ISCI_REMOTE_DEVICE *remote_device;
struct ISCI_DOMAIN *isci_domain =
(struct ISCI_DOMAIN *)sci_object_get_association(domain);
/*
* For direct-attached devices, do not pull the device object from
* the pool. Rather, use the one stored in the domain object which
* will ensure that we always get consistent target ids for direct
* attached devices.
*/
remote_device = isci_domain->da_remote_device;
scif_remote_device_construct(domain,
(uint8_t*)remote_device + sizeof(struct ISCI_REMOTE_DEVICE),
&(remote_device->sci_object));
sci_object_set_association(remote_device->sci_object, remote_device);
scif_remote_device_da_construct(remote_device->sci_object, sas_address,
protocols);
/* We do not put the device in the ISCI_CONTROLLER's device array yet.
* That will happen once the device becomes ready (see
* scif_cb_remote_device_ready).
*/
remote_device->domain = isci_domain;
}
/**
* @brief This callback method informs the framework user that a new
* expander attached device was found in the domain.
*
* @param[in] controller This parameter specifies the controller object
* with which this callback is associated.
* @param[in] domain This parameter specifies the domain object with
* which this callback is associated.
* @param[in] containing_device This parameter specifies the remote
* device that contains the device that was added.
* @param[in] smp_response This parameter specifies the SMP response
* data associated with the newly discovered device.
*
* @return none
*/
void
scif_cb_domain_ea_device_added(SCI_CONTROLLER_HANDLE_T controller,
SCI_DOMAIN_HANDLE_T domain, SCI_REMOTE_DEVICE_HANDLE_T containing_device,
SMP_RESPONSE_DISCOVER_T *smp_response)
{
struct ISCI_REMOTE_DEVICE *remote_device;
struct ISCI_DOMAIN *isci_domain =
(struct ISCI_DOMAIN *)sci_object_get_association(domain);
struct ISCI_CONTROLLER *isci_controller =
(struct ISCI_CONTROLLER *)sci_object_get_association(controller);
sci_pool_get(isci_controller->remote_device_pool, remote_device);
scif_remote_device_construct( domain,
(uint8_t*)remote_device + sizeof(struct ISCI_REMOTE_DEVICE),
&(remote_device->sci_object));
sci_object_set_association(remote_device->sci_object, remote_device);
scif_remote_device_ea_construct(remote_device->sci_object,
containing_device, smp_response);
/* We do not put the device in the ISCI_CONTROLLER's device array yet.
* That will happen once the device becomes ready (see
* scif_cb_remote_device_ready).
*/
remote_device->domain = isci_domain;
}
/**
* @brief This callback method informs the framework user that a device
* has been removed from the domain.
*
* @param[in] controller This parameter specifies the controller object
* with which this callback is associated.
* @param[in] domain This parameter specifies the domain object with
* which this callback is associated.
* @param[in] remote_device This parameter specifies the device object with
* which this callback is associated.
*
* @return none
*/
void
scif_cb_domain_device_removed(SCI_CONTROLLER_HANDLE_T controller,
SCI_DOMAIN_HANDLE_T domain, SCI_REMOTE_DEVICE_HANDLE_T remote_device)
{
struct ISCI_REMOTE_DEVICE *isci_remote_device =
(struct ISCI_REMOTE_DEVICE *)sci_object_get_association(remote_device);
struct ISCI_DOMAIN *isci_domain =
(struct ISCI_DOMAIN *)sci_object_get_association(domain);
struct ISCI_CONTROLLER *isci_controller =
(struct ISCI_CONTROLLER *)sci_object_get_association(controller);
uint32_t path = cam_sim_path(isci_controller->sim);
union ccb *ccb = xpt_alloc_ccb_nowait();
isci_controller->remote_device[isci_remote_device->index] = NULL;
xpt_create_path(&ccb->ccb_h.path, xpt_periph, path,
isci_remote_device->index, CAM_LUN_WILDCARD);
xpt_rescan(ccb);
scif_remote_device_destruct(remote_device);
/*
* Only put the remote device back into the pool if it was an
* expander-attached device.
*/
if (isci_remote_device != isci_domain->da_remote_device)
sci_pool_put(isci_controller->remote_device_pool,
isci_remote_device);
}
void
isci_domain_construct(struct ISCI_DOMAIN *domain, uint32_t domain_index,
struct ISCI_CONTROLLER *controller)
{
scif_controller_get_domain_handle( controller->scif_controller_handle,
domain_index, &domain->sci_object);
domain->index = domain_index;
domain->controller = controller;
sci_object_set_association(domain->sci_object, (void *)domain);
}