isci: Intel(R) C600 Series Chipset Storage Control Unit Driver
Support for the up to 2x4-port 6Gb/s SAS controllers embedded in the chipset. This is a snapshot of the first publicly available version of the driver, commit 4c1db2d0 in the 'historical' branch. git://git.kernel.org/pub/scm/linux/kernel/git/djbw/isci.git historical Signed-off-by: Maciej Trela <maciej.trela@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams
781
drivers/scsi/isci/host.c
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781
drivers/scsi/isci/host.c
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@@ -0,0 +1,781 @@
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/*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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||||
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.GPL.
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*
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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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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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 "isci.h"
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#include "scic_io_request.h"
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#include "scic_remote_device.h"
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#include "scic_port.h"
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#include "port.h"
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#include "request.h"
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#include "host.h"
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/**
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* isci_isr() - This function is the interrupt service routine for the
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* controller. It schedules the tasklet and returns.
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* @vec: This parameter specifies the interrupt vector.
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* @data: This parameter specifies the ISCI host object.
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*
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* IRQ_HANDLED if out interrupt otherwise, IRQ_NONE
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*/
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irqreturn_t isci_isr(int vec, void *data)
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{
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struct isci_host *isci_host
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= (struct isci_host *)data;
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struct scic_controller_handler_methods *handlers
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= &isci_host->scic_irq_handlers[SCI_MSIX_NORMAL_VECTOR];
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irqreturn_t ret = IRQ_NONE;
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if (isci_host_get_state(isci_host) != isci_starting
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&& handlers->interrupt_handler) {
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if (handlers->interrupt_handler(isci_host->core_controller)) {
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if (isci_host_get_state(isci_host) != isci_stopped) {
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tasklet_schedule(
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&isci_host->completion_tasklet);
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} else
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dev_dbg(&isci_host->pdev->dev,
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"%s: controller stopped\n",
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__func__);
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ret = IRQ_HANDLED;
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}
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} else
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dev_warn(&isci_host->pdev->dev,
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"%s: get_handler_methods failed, "
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"isci_host->status = 0x%x\n",
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__func__,
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isci_host_get_state(isci_host));
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return ret;
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}
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irqreturn_t isci_legacy_isr(int vec, void *data)
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{
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struct pci_dev *pdev = data;
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struct isci_host *isci_host;
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struct scic_controller_handler_methods *handlers;
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irqreturn_t ret = IRQ_NONE;
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/*
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* Since this is a legacy interrupt, either or both
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* controllers could have triggered it. Thus, we have to call
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* the legacy interrupt handler for all controllers on the
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* PCI function.
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*/
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for_each_isci_host(isci_host, pdev) {
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handlers = &isci_host->scic_irq_handlers[SCI_MSIX_NORMAL_VECTOR];
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if (isci_host_get_state(isci_host) != isci_starting
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&& handlers->interrupt_handler) {
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if (handlers->interrupt_handler(isci_host->core_controller)) {
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if (isci_host_get_state(isci_host) != isci_stopped) {
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tasklet_schedule(
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&isci_host->completion_tasklet);
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} else
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dev_dbg(&isci_host->pdev->dev,
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"%s: controller stopped\n",
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__func__);
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ret = IRQ_HANDLED;
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}
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} else
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dev_warn(&isci_host->pdev->dev,
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"%s: get_handler_methods failed, "
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"isci_host->status = 0x%x\n",
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__func__,
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isci_host_get_state(isci_host));
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}
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return ret;
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}
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/**
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* isci_host_start_complete() - This function is called by the core library,
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* through the ISCI Module, to indicate controller start status.
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* @isci_host: This parameter specifies the ISCI host object
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* @completion_status: This parameter specifies the completion status from the
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* core library.
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*
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*/
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void isci_host_start_complete(
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struct isci_host *isci_host,
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enum sci_status completion_status)
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{
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if (completion_status == SCI_SUCCESS) {
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dev_dbg(&isci_host->pdev->dev,
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"%s: completion_status: SCI_SUCCESS\n", __func__);
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isci_host_change_state(isci_host, isci_ready);
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complete_all(&isci_host->start_complete);
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} else
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dev_err(&isci_host->pdev->dev,
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"controller start failed with "
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"completion_status = 0x%x;",
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completion_status);
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}
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/**
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* isci_host_scan_finished() - This function is one of the SCSI Host Template
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* functions. The SCSI midlayer calls this function during a target scan,
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* approx. once every 10 millisecs.
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* @shost: This parameter specifies the SCSI host being scanned
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* @time: This parameter specifies the number of ticks since the scan started.
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*
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* scan status, zero indicates the SCSI midlayer should continue to poll,
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* otherwise assume controller is ready.
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*/
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int isci_host_scan_finished(
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struct Scsi_Host *shost,
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unsigned long time)
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{
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struct isci_host *isci_host
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= isci_host_from_sas_ha(SHOST_TO_SAS_HA(shost));
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struct scic_controller_handler_methods *handlers
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= &isci_host->scic_irq_handlers[SCI_MSIX_NORMAL_VECTOR];
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if (handlers->interrupt_handler == NULL) {
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dev_err(&isci_host->pdev->dev,
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"%s: scic_controller_get_handler_methods failed\n",
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__func__);
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return 1;
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}
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/**
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* check interrupt_handler's status and call completion_handler if true,
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* link_up events should be coming from the scu core lib, as phy's come
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* online. for each link_up from the core, call
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* get_received_identify_address_frame, copy the frame into the
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* sas_phy object and call libsas notify_port_event(PORTE_BYTES_DMAED).
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* continue to return zero from thee scan_finished routine until
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* the scic_cb_controller_start_complete() call comes from the core.
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**/
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if (handlers->interrupt_handler(isci_host->core_controller))
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handlers->completion_handler(isci_host->core_controller);
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if (isci_starting == isci_host_get_state(isci_host)
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&& time < (HZ * 10)) {
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dev_dbg(&isci_host->pdev->dev,
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"%s: isci_host->status = %d, time = %ld\n",
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__func__, isci_host_get_state(isci_host), time);
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return 0;
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}
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dev_dbg(&isci_host->pdev->dev,
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"%s: isci_host->status = %d, time = %ld\n",
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__func__, isci_host_get_state(isci_host), time);
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scic_controller_enable_interrupts(isci_host->core_controller);
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return 1;
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}
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/**
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* isci_host_scan_start() - This function is one of the SCSI Host Template
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* function, called by the SCSI mid layer berfore a target scan begins. The
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* core library controller start routine is called from here.
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* @shost: This parameter specifies the SCSI host to be scanned
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*
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*/
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void isci_host_scan_start(struct Scsi_Host *shost)
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{
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struct isci_host *isci_host;
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isci_host = isci_host_from_sas_ha(SHOST_TO_SAS_HA(shost));
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isci_host_change_state(isci_host, isci_starting);
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scic_controller_disable_interrupts(isci_host->core_controller);
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init_completion(&isci_host->start_complete);
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scic_controller_start(
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isci_host->core_controller,
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scic_controller_get_suggested_start_timeout(
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isci_host->core_controller)
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);
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}
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void isci_host_stop_complete(
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struct isci_host *isci_host,
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enum sci_status completion_status)
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{
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isci_host_change_state(isci_host, isci_stopped);
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scic_controller_disable_interrupts(
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isci_host->core_controller
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);
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complete(&isci_host->stop_complete);
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}
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static struct coherent_memory_info *isci_host_alloc_mdl_struct(
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struct isci_host *isci_host,
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u32 size)
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{
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struct coherent_memory_info *mdl_struct;
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void *uncached_address = NULL;
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mdl_struct = devm_kzalloc(&isci_host->pdev->dev,
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sizeof(*mdl_struct),
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GFP_KERNEL);
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if (!mdl_struct)
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return NULL;
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INIT_LIST_HEAD(&mdl_struct->node);
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uncached_address = dmam_alloc_coherent(&isci_host->pdev->dev,
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size,
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&mdl_struct->dma_handle,
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GFP_KERNEL);
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if (!uncached_address)
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return NULL;
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/* memset the whole memory area. */
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memset((char *)uncached_address, 0, size);
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mdl_struct->vaddr = uncached_address;
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mdl_struct->size = (size_t)size;
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return mdl_struct;
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}
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static void isci_host_build_mde(
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struct sci_physical_memory_descriptor *mde_struct,
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struct coherent_memory_info *mdl_struct)
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{
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unsigned long address = 0;
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dma_addr_t dma_addr = 0;
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address = (unsigned long)mdl_struct->vaddr;
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dma_addr = mdl_struct->dma_handle;
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/* to satisfy the alignment. */
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if ((address % mde_struct->constant_memory_alignment) != 0) {
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int align_offset
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= (mde_struct->constant_memory_alignment
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- (address % mde_struct->constant_memory_alignment));
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address += align_offset;
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dma_addr += align_offset;
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}
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mde_struct->virtual_address = (void *)address;
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mde_struct->physical_address = dma_addr;
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mdl_struct->mde = mde_struct;
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}
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static int isci_host_mdl_allocate_coherent(
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struct isci_host *isci_host)
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{
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struct sci_physical_memory_descriptor *current_mde;
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struct coherent_memory_info *mdl_struct;
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u32 size = 0;
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struct sci_base_memory_descriptor_list *mdl_handle
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= sci_controller_get_memory_descriptor_list_handle(
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isci_host->core_controller);
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sci_mdl_first_entry(mdl_handle);
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current_mde = sci_mdl_get_current_entry(mdl_handle);
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while (current_mde != NULL) {
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size = (current_mde->constant_memory_size
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+ current_mde->constant_memory_alignment);
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mdl_struct = isci_host_alloc_mdl_struct(isci_host, size);
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if (!mdl_struct)
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return -ENOMEM;
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list_add_tail(&mdl_struct->node, &isci_host->mdl_struct_list);
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isci_host_build_mde(current_mde, mdl_struct);
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sci_mdl_next_entry(mdl_handle);
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current_mde = sci_mdl_get_current_entry(mdl_handle);
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}
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return 0;
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}
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/**
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* isci_host_completion_routine() - This function is the delayed service
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* routine that calls the sci core library's completion handler. It's
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* scheduled as a tasklet from the interrupt service routine when interrupts
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* in use, or set as the timeout function in polled mode.
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* @data: This parameter specifies the ISCI host object
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*
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*/
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static void isci_host_completion_routine(unsigned long data)
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{
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struct isci_host *isci_host = (struct isci_host *)data;
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struct scic_controller_handler_methods *handlers
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= &isci_host->scic_irq_handlers[SCI_MSIX_NORMAL_VECTOR];
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struct list_head completed_request_list;
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struct list_head aborted_request_list;
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struct list_head *current_position;
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struct list_head *next_position;
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struct isci_request *request;
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struct isci_request *next_request;
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struct sas_task *task;
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INIT_LIST_HEAD(&completed_request_list);
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INIT_LIST_HEAD(&aborted_request_list);
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spin_lock_irq(&isci_host->scic_lock);
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if (handlers->completion_handler) {
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handlers->completion_handler(
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isci_host->core_controller
|
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);
|
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}
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/* Take the lists of completed I/Os from the host. */
|
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list_splice_init(&isci_host->requests_to_complete,
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&completed_request_list);
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list_splice_init(&isci_host->requests_to_abort,
|
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&aborted_request_list);
|
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|
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spin_unlock_irq(&isci_host->scic_lock);
|
||||
|
||||
/* Process any completions in the lists. */
|
||||
list_for_each_safe(current_position, next_position,
|
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&completed_request_list) {
|
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|
||||
request = list_entry(current_position, struct isci_request,
|
||||
completed_node);
|
||||
task = isci_request_access_task(request);
|
||||
|
||||
/* Normal notification (task_done) */
|
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dev_dbg(&isci_host->pdev->dev,
|
||||
"%s: Normal - request/task = %p/%p\n",
|
||||
__func__,
|
||||
request,
|
||||
task);
|
||||
|
||||
task->task_done(task);
|
||||
task->lldd_task = NULL;
|
||||
|
||||
/* Free the request object. */
|
||||
isci_request_free(isci_host, request);
|
||||
}
|
||||
list_for_each_entry_safe(request, next_request, &aborted_request_list,
|
||||
completed_node) {
|
||||
|
||||
task = isci_request_access_task(request);
|
||||
|
||||
/* Use sas_task_abort */
|
||||
dev_warn(&isci_host->pdev->dev,
|
||||
"%s: Error - request/task = %p/%p\n",
|
||||
__func__,
|
||||
request,
|
||||
task);
|
||||
|
||||
/* Put the task into the abort path. */
|
||||
sas_task_abort(task);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
void isci_host_deinit(
|
||||
struct isci_host *isci_host)
|
||||
{
|
||||
int i;
|
||||
|
||||
isci_host_change_state(isci_host, isci_stopping);
|
||||
for (i = 0; i < SCI_MAX_PORTS; i++) {
|
||||
struct isci_port *port = &isci_host->isci_ports[i];
|
||||
struct isci_remote_device *device, *tmpdev;
|
||||
list_for_each_entry_safe(device, tmpdev,
|
||||
&port->remote_dev_list, node) {
|
||||
isci_remote_device_change_state(device, isci_stopping);
|
||||
isci_remote_device_stop(device);
|
||||
}
|
||||
}
|
||||
|
||||
/* stop the comtroller and wait for completion. */
|
||||
init_completion(&isci_host->stop_complete);
|
||||
scic_controller_stop(
|
||||
isci_host->core_controller,
|
||||
SCIC_CONTROLLER_STOP_TIMEOUT
|
||||
);
|
||||
wait_for_completion(&isci_host->stop_complete);
|
||||
/* next, reset the controller. */
|
||||
scic_controller_reset(isci_host->core_controller);
|
||||
}
|
||||
|
||||
static int isci_verify_firmware(const struct firmware *fw,
|
||||
struct isci_firmware *isci_fw)
|
||||
{
|
||||
const u8 *tmp;
|
||||
|
||||
if (fw->size < ISCI_FIRMWARE_MIN_SIZE)
|
||||
return -EINVAL;
|
||||
|
||||
tmp = fw->data;
|
||||
|
||||
/* 12th char should be the NULL terminate for the ID string */
|
||||
if (tmp[11] != '\0')
|
||||
return -EINVAL;
|
||||
|
||||
if (strncmp("#SCU MAGIC#", tmp, 11) != 0)
|
||||
return -EINVAL;
|
||||
|
||||
isci_fw->id = tmp;
|
||||
isci_fw->version = fw->data[ISCI_FW_VER_OFS];
|
||||
isci_fw->subversion = fw->data[ISCI_FW_SUBVER_OFS];
|
||||
|
||||
tmp = fw->data + ISCI_FW_DATA_OFS;
|
||||
|
||||
while (*tmp != ISCI_FW_HDR_EOF) {
|
||||
switch (*tmp) {
|
||||
case ISCI_FW_HDR_PHYMASK:
|
||||
tmp++;
|
||||
isci_fw->phy_masks_size = *tmp;
|
||||
tmp++;
|
||||
isci_fw->phy_masks = (const u32 *)tmp;
|
||||
tmp += sizeof(u32) * isci_fw->phy_masks_size;
|
||||
break;
|
||||
|
||||
case ISCI_FW_HDR_PHYGEN:
|
||||
tmp++;
|
||||
isci_fw->phy_gens_size = *tmp;
|
||||
tmp++;
|
||||
isci_fw->phy_gens = (const u32 *)tmp;
|
||||
tmp += sizeof(u32) * isci_fw->phy_gens_size;
|
||||
break;
|
||||
|
||||
case ISCI_FW_HDR_SASADDR:
|
||||
tmp++;
|
||||
isci_fw->sas_addrs_size = *tmp;
|
||||
tmp++;
|
||||
isci_fw->sas_addrs = (const u64 *)tmp;
|
||||
tmp += sizeof(u64) * isci_fw->sas_addrs_size;
|
||||
break;
|
||||
|
||||
default:
|
||||
pr_err("bad field in firmware binary blob\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
pr_info("isci firmware v%u.%u loaded.\n",
|
||||
isci_fw->version, isci_fw->subversion);
|
||||
|
||||
return SCI_SUCCESS;
|
||||
}
|
||||
|
||||
static void __iomem *scu_base(struct isci_host *isci_host)
|
||||
{
|
||||
struct pci_dev *pdev = isci_host->pdev;
|
||||
int id = isci_host->id;
|
||||
|
||||
return pcim_iomap_table(pdev)[SCI_SCU_BAR * 2] + SCI_SCU_BAR_SIZE * id;
|
||||
}
|
||||
|
||||
static void __iomem *smu_base(struct isci_host *isci_host)
|
||||
{
|
||||
struct pci_dev *pdev = isci_host->pdev;
|
||||
int id = isci_host->id;
|
||||
|
||||
return pcim_iomap_table(pdev)[SCI_SMU_BAR * 2] + SCI_SMU_BAR_SIZE * id;
|
||||
}
|
||||
|
||||
#define SCI_MAX_TIMER_COUNT 25
|
||||
|
||||
int isci_host_init(struct isci_host *isci_host)
|
||||
{
|
||||
int err = 0;
|
||||
int index = 0;
|
||||
enum sci_status status;
|
||||
struct scic_sds_controller *controller;
|
||||
struct scic_sds_port *scic_port;
|
||||
struct scic_controller_handler_methods *handlers
|
||||
= &isci_host->scic_irq_handlers[0];
|
||||
union scic_oem_parameters scic_oem_params;
|
||||
union scic_user_parameters scic_user_params;
|
||||
const struct firmware *fw = NULL;
|
||||
struct isci_firmware *isci_fw = NULL;
|
||||
|
||||
INIT_LIST_HEAD(&isci_host->timer_list_struct.timers);
|
||||
isci_timer_list_construct(
|
||||
&isci_host->timer_list_struct,
|
||||
SCI_MAX_TIMER_COUNT
|
||||
);
|
||||
|
||||
controller = scic_controller_alloc(&isci_host->pdev->dev);
|
||||
|
||||
if (!controller) {
|
||||
err = -ENOMEM;
|
||||
dev_err(&isci_host->pdev->dev, "%s: failed (%d)\n", __func__, err);
|
||||
goto out;
|
||||
}
|
||||
|
||||
isci_host->core_controller = controller;
|
||||
spin_lock_init(&isci_host->state_lock);
|
||||
spin_lock_init(&isci_host->scic_lock);
|
||||
spin_lock_init(&isci_host->queue_lock);
|
||||
|
||||
isci_host_change_state(isci_host, isci_starting);
|
||||
isci_host->can_queue = ISCI_CAN_QUEUE_VAL;
|
||||
|
||||
status = scic_controller_construct(controller, scu_base(isci_host),
|
||||
smu_base(isci_host));
|
||||
|
||||
if (status != SCI_SUCCESS) {
|
||||
dev_err(&isci_host->pdev->dev,
|
||||
"%s: scic_controller_construct failed - status = %x\n",
|
||||
__func__,
|
||||
status);
|
||||
err = -ENODEV;
|
||||
goto out;
|
||||
}
|
||||
|
||||
isci_host->sas_ha.dev = &isci_host->pdev->dev;
|
||||
isci_host->sas_ha.lldd_ha = isci_host;
|
||||
|
||||
/*----------- SCIC controller Initialization Stuff ------------------
|
||||
* set association host adapter struct in core controller.
|
||||
*/
|
||||
sci_object_set_association(isci_host->core_controller,
|
||||
(void *)isci_host
|
||||
);
|
||||
|
||||
/* grab initial values stored in the controller object for OEM and USER
|
||||
* parameters */
|
||||
scic_oem_parameters_get(controller, &scic_oem_params);
|
||||
scic_user_parameters_get(controller, &scic_user_params);
|
||||
|
||||
isci_fw = devm_kzalloc(&isci_host->pdev->dev,
|
||||
sizeof(struct isci_firmware),
|
||||
GFP_KERNEL);
|
||||
if (!isci_fw) {
|
||||
dev_warn(&isci_host->pdev->dev,
|
||||
"allocating firmware struct failed\n");
|
||||
dev_warn(&isci_host->pdev->dev,
|
||||
"Default OEM configuration being used:"
|
||||
" 4 narrow ports, and default SAS Addresses\n");
|
||||
goto set_default_params;
|
||||
}
|
||||
|
||||
status = request_firmware(&fw, ISCI_FW_NAME, &isci_host->pdev->dev);
|
||||
if (status) {
|
||||
dev_warn(&isci_host->pdev->dev,
|
||||
"Loading firmware failed, using default values\n");
|
||||
dev_warn(&isci_host->pdev->dev,
|
||||
"Default OEM configuration being used:"
|
||||
" 4 narrow ports, and default SAS Addresses\n");
|
||||
goto set_default_params;
|
||||
}
|
||||
else {
|
||||
status = isci_verify_firmware(fw, isci_fw);
|
||||
if (status != SCI_SUCCESS) {
|
||||
dev_warn(&isci_host->pdev->dev,
|
||||
"firmware verification failed\n");
|
||||
dev_warn(&isci_host->pdev->dev,
|
||||
"Default OEM configuration being used:"
|
||||
" 4 narrow ports, and default SAS "
|
||||
"Addresses\n");
|
||||
goto set_default_params;
|
||||
}
|
||||
|
||||
/* grab any OEM and USER parameters specified at module load */
|
||||
status = isci_parse_oem_parameters(&scic_oem_params,
|
||||
isci_host->id, isci_fw);
|
||||
if (status != SCI_SUCCESS) {
|
||||
dev_warn(&isci_host->pdev->dev,
|
||||
"parsing firmware oem parameters failed\n");
|
||||
err = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
|
||||
status = isci_parse_user_parameters(&scic_user_params,
|
||||
isci_host->id, isci_fw);
|
||||
if (status != SCI_SUCCESS) {
|
||||
dev_warn(&isci_host->pdev->dev,
|
||||
"%s: isci_parse_user_parameters"
|
||||
" failed\n", __func__);
|
||||
err = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
set_default_params:
|
||||
|
||||
status = scic_oem_parameters_set(isci_host->core_controller,
|
||||
&scic_oem_params
|
||||
);
|
||||
|
||||
if (status != SCI_SUCCESS) {
|
||||
dev_warn(&isci_host->pdev->dev,
|
||||
"%s: scic_oem_parameters_set failed\n",
|
||||
__func__);
|
||||
err = -ENODEV;
|
||||
goto out;
|
||||
}
|
||||
|
||||
|
||||
status = scic_user_parameters_set(isci_host->core_controller,
|
||||
&scic_user_params
|
||||
);
|
||||
|
||||
if (status != SCI_SUCCESS) {
|
||||
dev_warn(&isci_host->pdev->dev,
|
||||
"%s: scic_user_parameters_set failed\n",
|
||||
__func__);
|
||||
err = -ENODEV;
|
||||
goto out;
|
||||
}
|
||||
|
||||
status = scic_controller_initialize(isci_host->core_controller);
|
||||
if (status != SCI_SUCCESS) {
|
||||
dev_warn(&isci_host->pdev->dev,
|
||||
"%s: scic_controller_initialize failed -"
|
||||
" status = 0x%x\n",
|
||||
__func__, status);
|
||||
err = -ENODEV;
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* @todo: use both MSI-X interrupts, and don't do indirect
|
||||
* calls to the handlers just register direct calls
|
||||
*/
|
||||
if (isci_host->pdev->msix_enabled) {
|
||||
status = scic_controller_get_handler_methods(
|
||||
SCIC_MSIX_INTERRUPT_TYPE,
|
||||
SCI_MSIX_DOUBLE_VECTOR,
|
||||
handlers
|
||||
);
|
||||
} else {
|
||||
status = scic_controller_get_handler_methods(
|
||||
SCIC_LEGACY_LINE_INTERRUPT_TYPE,
|
||||
0,
|
||||
handlers
|
||||
);
|
||||
}
|
||||
|
||||
if (status != SCI_SUCCESS) {
|
||||
handlers->interrupt_handler = NULL;
|
||||
handlers->completion_handler = NULL;
|
||||
dev_err(&isci_host->pdev->dev,
|
||||
"%s: scic_controller_get_handler_methods failed\n",
|
||||
__func__);
|
||||
}
|
||||
|
||||
tasklet_init(&isci_host->completion_tasklet,
|
||||
isci_host_completion_routine,
|
||||
(unsigned long)isci_host
|
||||
);
|
||||
|
||||
INIT_LIST_HEAD(&(isci_host->mdl_struct_list));
|
||||
|
||||
INIT_LIST_HEAD(&isci_host->requests_to_complete);
|
||||
INIT_LIST_HEAD(&isci_host->requests_to_abort);
|
||||
|
||||
/* populate mdl with dma memory. scu_mdl_allocate_coherent() */
|
||||
err = isci_host_mdl_allocate_coherent(isci_host);
|
||||
|
||||
if (err)
|
||||
goto err_out;
|
||||
|
||||
/*
|
||||
* keep the pool alloc size around, will use it for a bounds checking
|
||||
* when trying to convert virtual addresses to physical addresses
|
||||
*/
|
||||
isci_host->dma_pool_alloc_size = sizeof(struct isci_request) +
|
||||
scic_io_request_get_object_size();
|
||||
isci_host->dma_pool = dmam_pool_create(DRV_NAME, &isci_host->pdev->dev,
|
||||
isci_host->dma_pool_alloc_size,
|
||||
SLAB_HWCACHE_ALIGN, 0);
|
||||
|
||||
if (!isci_host->dma_pool) {
|
||||
err = -ENOMEM;
|
||||
goto req_obj_err_out;
|
||||
}
|
||||
|
||||
for (index = 0; index < SCI_MAX_PORTS; index++) {
|
||||
isci_port_init(&isci_host->isci_ports[index],
|
||||
isci_host, index);
|
||||
}
|
||||
|
||||
for (index = 0; index < SCI_MAX_PHYS; index++)
|
||||
isci_phy_init(&isci_host->phys[index], isci_host, index);
|
||||
|
||||
/* Why are we doing this? Is this even necessary? */
|
||||
memcpy(&isci_host->sas_addr[0], &isci_host->phys[0].sas_addr[0],
|
||||
SAS_ADDR_SIZE);
|
||||
|
||||
/* Start the ports */
|
||||
for (index = 0; index < SCI_MAX_PORTS; index++) {
|
||||
|
||||
scic_controller_get_port_handle(controller, index, &scic_port);
|
||||
scic_port_start(scic_port);
|
||||
}
|
||||
|
||||
goto out;
|
||||
|
||||
/* SPB_Debug: destroy request object cache */
|
||||
req_obj_err_out:
|
||||
/* SPB_Debug: destroy remote object cache */
|
||||
err_out:
|
||||
/* SPB_Debug: undo controller init, construct and alloc, remove from parent
|
||||
* controller list. */
|
||||
out:
|
||||
if (fw)
|
||||
release_firmware(fw);
|
||||
return err;
|
||||
}
|
||||
Reference in New Issue
Block a user