3d32e6b10c
Stop abusing xpt_periph in random plases that really have no periph related to CCB, for example, bus scanning. NULL value is fine in such cases and it is correctly logged in debug messages as "noperiph". If at some point we need some real XPT periphs (alike to pmpX now), quite likely they will be per-bus, and not a single global instance as xpt_periph now.
315 lines
10 KiB
C
315 lines
10 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <dev/isci/isci.h>
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#include <cam/cam_periph.h>
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#include <cam/cam_xpt_periph.h>
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#include <dev/isci/scil/scif_task_request.h>
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#include <dev/isci/scil/scif_controller.h>
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#include <dev/isci/scil/scif_domain.h>
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#include <dev/isci/scil/scif_user_callback.h>
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#include <dev/isci/scil/scic_port.h>
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#include <dev/isci/scil/scic_phy.h>
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/**
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* @brief This callback method informs the framework user that the remote
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* device is ready and capable of processing IO requests.
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*
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* @param[in] controller This parameter specifies the controller object
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* with which this callback is associated.
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* @param[in] domain This parameter specifies the domain object with
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* which this callback is associated.
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* @param[in] remote_device This parameter specifies the device object with
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* which this callback is associated.
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*
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* @return none
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*/
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void
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scif_cb_remote_device_ready(SCI_CONTROLLER_HANDLE_T controller,
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SCI_DOMAIN_HANDLE_T domain, SCI_REMOTE_DEVICE_HANDLE_T remote_device)
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{
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struct ISCI_REMOTE_DEVICE *isci_remote_device =
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sci_object_get_association(remote_device);
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struct ISCI_CONTROLLER *isci_controller =
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sci_object_get_association(controller);
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uint32_t device_index = isci_remote_device->index;
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if (isci_controller->remote_device[device_index] == NULL) {
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/* This new device is now ready, so put it in the controller's
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* remote device list so it is visible to CAM.
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*/
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isci_controller->remote_device[device_index] =
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isci_remote_device;
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if (isci_controller->has_been_scanned) {
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/* The sim object has been scanned at least once
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* already. In that case, create a CCB to instruct
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* CAM to rescan this device.
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* If the sim object has not been scanned, this device
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* will get scanned as part of the initial scan.
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*/
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union ccb *ccb = xpt_alloc_ccb_nowait();
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xpt_create_path(&ccb->ccb_h.path, NULL,
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cam_sim_path(isci_controller->sim),
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isci_remote_device->index, CAM_LUN_WILDCARD);
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xpt_rescan(ccb);
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}
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}
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isci_remote_device_release_device_queue(isci_remote_device);
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}
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/**
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* @brief This callback method informs the framework user that the remote
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* device is not ready. Thus, it is incapable of processing IO
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* requests.
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*
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* @param[in] controller This parameter specifies the controller object
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* with which this callback is associated.
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* @param[in] domain This parameter specifies the domain object with
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* which this callback is associated.
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* @param[in] remote_device This parameter specifies the device object with
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* which this callback is associated.
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*
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* @return none
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*/
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void
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scif_cb_remote_device_not_ready(SCI_CONTROLLER_HANDLE_T controller,
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SCI_DOMAIN_HANDLE_T domain, SCI_REMOTE_DEVICE_HANDLE_T remote_device)
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{
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}
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/**
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* @brief This callback method informs the framework user that the remote
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* device failed. This typically occurs shortly after the device
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* has been discovered, during the configuration phase for the device.
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*
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* @param[in] controller This parameter specifies the controller object
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* with which this callback is associated.
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* @param[in] domain This parameter specifies the domain object with
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* which this callback is associated.
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* @param[in] remote_device This parameter specifies the device object with
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* which this callback is associated.
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* @param[in] status This parameter specifies the specific failure condition
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* associated with this device failure.
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*
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* @return none
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*/
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void
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scif_cb_remote_device_failed(SCI_CONTROLLER_HANDLE_T controller,
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SCI_DOMAIN_HANDLE_T domain, SCI_REMOTE_DEVICE_HANDLE_T remote_device,
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SCI_STATUS status)
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{
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}
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void
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isci_remote_device_reset(struct ISCI_REMOTE_DEVICE *remote_device,
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union ccb *ccb)
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{
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struct ISCI_CONTROLLER *controller = remote_device->domain->controller;
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struct ISCI_REQUEST *request;
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struct ISCI_TASK_REQUEST *task_request;
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SCI_STATUS status;
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if (remote_device->is_resetting == TRUE) {
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/* device is already being reset, so return immediately */
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return;
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}
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if (sci_pool_empty(controller->request_pool)) {
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/* No requests are available in our request pool. If this reset is tied
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* to a CCB, ask CAM to requeue it. Otherwise, we need to put it on our
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* pending device reset list, so that the reset will occur when a request
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* frees up.
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*/
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if (ccb == NULL)
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sci_fast_list_insert_tail(
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&controller->pending_device_reset_list,
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&remote_device->pending_device_reset_element);
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else {
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ccb->ccb_h.status &= ~CAM_STATUS_MASK;
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ccb->ccb_h.status |= CAM_REQUEUE_REQ;
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xpt_done(ccb);
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}
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return;
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}
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isci_log_message(0, "ISCI",
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"Sending reset to device on controller %d domain %d CAM index %d\n",
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controller->index, remote_device->domain->index,
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remote_device->index
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);
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sci_pool_get(controller->request_pool, request);
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task_request = (struct ISCI_TASK_REQUEST *)request;
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task_request->parent.remote_device_handle = remote_device->sci_object;
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task_request->ccb = ccb;
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remote_device->is_resetting = TRUE;
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status = (SCI_STATUS) scif_task_request_construct(
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controller->scif_controller_handle, remote_device->sci_object,
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SCI_CONTROLLER_INVALID_IO_TAG, (void *)task_request,
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(void *)((char*)task_request + sizeof(struct ISCI_TASK_REQUEST)),
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&task_request->sci_object);
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if (status != SCI_SUCCESS) {
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isci_task_request_complete(controller->scif_controller_handle,
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remote_device->sci_object, task_request->sci_object,
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(SCI_TASK_STATUS)status);
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return;
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}
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status = (SCI_STATUS)scif_controller_start_task(
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controller->scif_controller_handle, remote_device->sci_object,
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task_request->sci_object, SCI_CONTROLLER_INVALID_IO_TAG);
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if (status != SCI_SUCCESS) {
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isci_task_request_complete(
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controller->scif_controller_handle,
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remote_device->sci_object, task_request->sci_object,
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(SCI_TASK_STATUS)status);
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return;
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}
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}
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uint32_t
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isci_remote_device_get_bitrate(struct ISCI_REMOTE_DEVICE *remote_device)
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{
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struct ISCI_DOMAIN *domain = remote_device->domain;
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struct ISCI_CONTROLLER *controller = domain->controller;
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SCI_PORT_HANDLE_T port_handle;
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SCIC_PORT_PROPERTIES_T port_properties;
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uint8_t phy_index;
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SCI_PHY_HANDLE_T phy_handle;
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SCIC_PHY_PROPERTIES_T phy_properties;
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/* get a handle to the port associated with this remote device's
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* domain
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*/
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port_handle = scif_domain_get_scic_port_handle(domain->sci_object);
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scic_port_get_properties(port_handle, &port_properties);
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/* get the lowest numbered phy in the port */
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phy_index = 0;
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while ((port_properties.phy_mask != 0) &&
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!(port_properties.phy_mask & 0x1)) {
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phy_index++;
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port_properties.phy_mask >>= 1;
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}
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/* get the properties for the lowest numbered phy */
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scic_controller_get_phy_handle(
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scif_controller_get_scic_handle(controller->scif_controller_handle),
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phy_index, &phy_handle);
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scic_phy_get_properties(phy_handle, &phy_properties);
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switch (phy_properties.negotiated_link_rate) {
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case SCI_SAS_150_GB:
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return (150000);
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case SCI_SAS_300_GB:
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return (300000);
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case SCI_SAS_600_GB:
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return (600000);
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default:
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return (0);
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}
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}
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void
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isci_remote_device_freeze_lun_queue(struct ISCI_REMOTE_DEVICE *remote_device,
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lun_id_t lun)
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{
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if (!(remote_device->frozen_lun_mask & (1 << lun))) {
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struct cam_path *path;
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xpt_create_path(&path, NULL,
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cam_sim_path(remote_device->domain->controller->sim),
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remote_device->index, lun);
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xpt_freeze_devq(path, 1);
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xpt_free_path(path);
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remote_device->frozen_lun_mask |= (1 << lun);
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}
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}
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void
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isci_remote_device_release_lun_queue(struct ISCI_REMOTE_DEVICE *remote_device,
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lun_id_t lun)
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{
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if (remote_device->frozen_lun_mask & (1 << lun)) {
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struct cam_path *path;
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remote_device->frozen_lun_mask &= ~(1 << lun);
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xpt_create_path(&path, NULL,
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cam_sim_path(remote_device->domain->controller->sim),
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remote_device->index, lun);
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xpt_release_devq(path, 1, TRUE);
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xpt_free_path(path);
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}
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}
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void
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isci_remote_device_release_device_queue(
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struct ISCI_REMOTE_DEVICE *device)
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{
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if (TAILQ_EMPTY(&device->queued_ccbs)) {
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lun_id_t lun;
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for (lun = 0; lun < ISCI_MAX_LUN; lun++)
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isci_remote_device_release_lun_queue(device, lun);
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} else {
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/*
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* We cannot unfreeze the devq, because there are still
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* CCBs in our internal queue that need to be processed
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* first. Mark this device, and the controller, so that
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* the first CCB in this device's internal queue will be
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* resubmitted after the current completion context
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* unwinds.
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*/
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device->release_queued_ccb = TRUE;
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device->domain->controller->release_queued_ccbs = TRUE;
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isci_log_message(1, "ISCI", "schedule %p for release\n",
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device);
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}
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}
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