smartpqi: initial commit of Microsemi smartpqi driver
This initial commit contains Microsemi's smartpqi module. [mkp: Minor tweaks to apply to 4.9/scsi-queue] Reviewed-by: Scott Benesh <scott.benesh@microsemi.com> Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by: Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by: Don Brace <don.brace@microsemi.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
parent
1d48390117
commit
6c223761eb
11
MAINTAINERS
11
MAINTAINERS
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@ -7819,6 +7819,17 @@ W: http://www.melexis.com
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S: Supported
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F: drivers/iio/temperature/mlx90614.c
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MICROSEMI SMART ARRAY SMARTPQI DRIVER (smartpqi)
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M: Don Brace <don.brace@microsemi.com>
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L: esc.storagedev@microsemi.com
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L: linux-scsi@vger.kernel.org
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S: Supported
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F: drivers/scsi/smartpqi/smartpqi*.[ch]
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F: drivers/scsi/smartpqi/Kconfig
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F: drivers/scsi/smartpqi/Makefile
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F: include/linux/cciss*.h
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F: include/uapi/linux/cciss*.h
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MN88472 MEDIA DRIVER
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M: Antti Palosaari <crope@iki.fi>
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L: linux-media@vger.kernel.org
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@ -540,6 +540,7 @@ config SCSI_ARCMSR
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source "drivers/scsi/esas2r/Kconfig"
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source "drivers/scsi/megaraid/Kconfig.megaraid"
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source "drivers/scsi/mpt3sas/Kconfig"
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source "drivers/scsi/smartpqi/Kconfig"
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source "drivers/scsi/ufs/Kconfig"
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config SCSI_HPTIOP
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@ -94,6 +94,7 @@ obj-$(CONFIG_SCSI_PAS16) += pas16.o
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obj-$(CONFIG_SCSI_T128) += t128.o
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obj-$(CONFIG_SCSI_DMX3191D) += dmx3191d.o
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obj-$(CONFIG_SCSI_HPSA) += hpsa.o
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obj-$(CONFIG_SCSI_SMARTPQI) += smartpqi/
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obj-$(CONFIG_SCSI_DTC3280) += dtc.o
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obj-$(CONFIG_SCSI_SYM53C8XX_2) += sym53c8xx_2/
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obj-$(CONFIG_SCSI_ZALON) += zalon7xx.o
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50
drivers/scsi/smartpqi/Kconfig
Normal file
50
drivers/scsi/smartpqi/Kconfig
Normal file
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@ -0,0 +1,50 @@
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#
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# Kernel configuration file for the SMARTPQI
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#
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# Copyright (c) 2016 Microsemi Corporation
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# Copyright (c) 2016 PMC-Sierra, Inc.
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# (mailto:esc.storagedev@microsemi.com)
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; version 2
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# of the License.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# NO WARRANTY
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# THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
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# CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
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# LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
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# MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
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# solely responsible for determining the appropriateness of using and
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# distributing the Program and assumes all risks associated with its
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# exercise of rights under this Agreement, including but not limited to
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# the risks and costs of program errors, damage to or loss of data,
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# programs or equipment, and unavailability or interruption of operations.
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# DISCLAIMER OF LIABILITY
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# NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
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# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
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# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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# TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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# USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
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# HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
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config SCSI_SMARTPQI
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tristate "Microsemi PQI Driver"
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default n
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depends on PCI && SCSI && !S390
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select SCSI_SAS_ATTRS
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select RAID_ATTRS
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---help---
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This driver supports Microsemi PQI controllers.
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<http://www.microsemi.com>
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To compile this driver as a module, choose M here: the
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module will be called smartpqi
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3
drivers/scsi/smartpqi/Makefile
Normal file
3
drivers/scsi/smartpqi/Makefile
Normal file
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@ -0,0 +1,3 @@
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ccflags-y += -I.
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obj-m += smartpqi.o
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smartpqi-objs := smartpqi_init.o smartpqi_sis.o smartpqi_sas_transport.o
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1133
drivers/scsi/smartpqi/smartpqi.h
Normal file
1133
drivers/scsi/smartpqi/smartpqi.h
Normal file
File diff suppressed because it is too large
Load Diff
6306
drivers/scsi/smartpqi/smartpqi_init.c
Normal file
6306
drivers/scsi/smartpqi/smartpqi_init.c
Normal file
File diff suppressed because it is too large
Load Diff
350
drivers/scsi/smartpqi/smartpqi_sas_transport.c
Normal file
350
drivers/scsi/smartpqi/smartpqi_sas_transport.c
Normal file
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@ -0,0 +1,350 @@
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/*
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* driver for Microsemi PQI-based storage controllers
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* Copyright (c) 2016 Microsemi Corporation
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* Copyright (c) 2016 PMC-Sierra, Inc.
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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 the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more details.
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*
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* Questions/Comments/Bugfixes to esc.storagedev@microsemi.com
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*
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*/
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#include <linux/kernel.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_transport_sas.h>
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#include "smartpqi.h"
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static struct pqi_sas_phy *pqi_alloc_sas_phy(struct pqi_sas_port *pqi_sas_port)
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{
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struct pqi_sas_phy *pqi_sas_phy;
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struct sas_phy *phy;
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pqi_sas_phy = kzalloc(sizeof(*pqi_sas_phy), GFP_KERNEL);
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if (!pqi_sas_phy)
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return NULL;
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phy = sas_phy_alloc(pqi_sas_port->parent_node->parent_dev,
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pqi_sas_port->next_phy_index);
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if (!phy) {
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kfree(pqi_sas_phy);
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return NULL;
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}
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pqi_sas_port->next_phy_index++;
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pqi_sas_phy->phy = phy;
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pqi_sas_phy->parent_port = pqi_sas_port;
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return pqi_sas_phy;
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}
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static void pqi_free_sas_phy(struct pqi_sas_phy *pqi_sas_phy)
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{
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struct sas_phy *phy = pqi_sas_phy->phy;
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sas_port_delete_phy(pqi_sas_phy->parent_port->port, phy);
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sas_phy_free(phy);
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if (pqi_sas_phy->added_to_port)
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list_del(&pqi_sas_phy->phy_list_entry);
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kfree(pqi_sas_phy);
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}
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static int pqi_sas_port_add_phy(struct pqi_sas_phy *pqi_sas_phy)
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{
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int rc;
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struct pqi_sas_port *pqi_sas_port;
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struct sas_phy *phy;
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struct sas_identify *identify;
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pqi_sas_port = pqi_sas_phy->parent_port;
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phy = pqi_sas_phy->phy;
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identify = &phy->identify;
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memset(identify, 0, sizeof(*identify));
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identify->sas_address = pqi_sas_port->sas_address;
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identify->device_type = SAS_END_DEVICE;
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identify->initiator_port_protocols = SAS_PROTOCOL_STP;
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identify->target_port_protocols = SAS_PROTOCOL_STP;
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phy->minimum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
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phy->maximum_linkrate_hw = SAS_LINK_RATE_UNKNOWN;
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phy->minimum_linkrate = SAS_LINK_RATE_UNKNOWN;
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phy->maximum_linkrate = SAS_LINK_RATE_UNKNOWN;
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phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
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rc = sas_phy_add(pqi_sas_phy->phy);
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if (rc)
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return rc;
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sas_port_add_phy(pqi_sas_port->port, pqi_sas_phy->phy);
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list_add_tail(&pqi_sas_phy->phy_list_entry,
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&pqi_sas_port->phy_list_head);
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pqi_sas_phy->added_to_port = true;
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return 0;
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}
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static int pqi_sas_port_add_rphy(struct pqi_sas_port *pqi_sas_port,
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struct sas_rphy *rphy)
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{
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struct sas_identify *identify;
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identify = &rphy->identify;
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identify->sas_address = pqi_sas_port->sas_address;
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identify->initiator_port_protocols = SAS_PROTOCOL_STP;
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identify->target_port_protocols = SAS_PROTOCOL_STP;
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return sas_rphy_add(rphy);
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}
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static struct pqi_sas_port *pqi_alloc_sas_port(
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struct pqi_sas_node *pqi_sas_node, u64 sas_address)
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{
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int rc;
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struct pqi_sas_port *pqi_sas_port;
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struct sas_port *port;
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pqi_sas_port = kzalloc(sizeof(*pqi_sas_port), GFP_KERNEL);
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if (!pqi_sas_port)
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return NULL;
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INIT_LIST_HEAD(&pqi_sas_port->phy_list_head);
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pqi_sas_port->parent_node = pqi_sas_node;
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port = sas_port_alloc_num(pqi_sas_node->parent_dev);
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if (!port)
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goto free_pqi_port;
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rc = sas_port_add(port);
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if (rc)
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goto free_sas_port;
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pqi_sas_port->port = port;
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pqi_sas_port->sas_address = sas_address;
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list_add_tail(&pqi_sas_port->port_list_entry,
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&pqi_sas_node->port_list_head);
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return pqi_sas_port;
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free_sas_port:
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sas_port_free(port);
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free_pqi_port:
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kfree(pqi_sas_port);
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return NULL;
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}
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static void pqi_free_sas_port(struct pqi_sas_port *pqi_sas_port)
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{
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struct pqi_sas_phy *pqi_sas_phy;
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struct pqi_sas_phy *next;
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list_for_each_entry_safe(pqi_sas_phy, next,
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&pqi_sas_port->phy_list_head, phy_list_entry)
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pqi_free_sas_phy(pqi_sas_phy);
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sas_port_delete(pqi_sas_port->port);
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list_del(&pqi_sas_port->port_list_entry);
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kfree(pqi_sas_port);
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}
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static struct pqi_sas_node *pqi_alloc_sas_node(struct device *parent_dev)
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{
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struct pqi_sas_node *pqi_sas_node;
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pqi_sas_node = kzalloc(sizeof(*pqi_sas_node), GFP_KERNEL);
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if (pqi_sas_node) {
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pqi_sas_node->parent_dev = parent_dev;
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INIT_LIST_HEAD(&pqi_sas_node->port_list_head);
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}
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return pqi_sas_node;
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}
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static void pqi_free_sas_node(struct pqi_sas_node *pqi_sas_node)
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{
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struct pqi_sas_port *pqi_sas_port;
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struct pqi_sas_port *next;
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if (!pqi_sas_node)
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return;
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list_for_each_entry_safe(pqi_sas_port, next,
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&pqi_sas_node->port_list_head, port_list_entry)
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pqi_free_sas_port(pqi_sas_port);
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kfree(pqi_sas_node);
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}
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struct pqi_scsi_dev *pqi_find_device_by_sas_rphy(
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struct pqi_ctrl_info *ctrl_info, struct sas_rphy *rphy)
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{
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struct pqi_scsi_dev *device;
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list_for_each_entry(device, &ctrl_info->scsi_device_list,
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scsi_device_list_entry) {
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if (!device->sas_port)
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continue;
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if (device->sas_port->rphy == rphy)
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return device;
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}
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return NULL;
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}
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int pqi_add_sas_host(struct Scsi_Host *shost, struct pqi_ctrl_info *ctrl_info)
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{
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int rc;
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struct device *parent_dev;
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struct pqi_sas_node *pqi_sas_node;
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struct pqi_sas_port *pqi_sas_port;
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struct pqi_sas_phy *pqi_sas_phy;
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parent_dev = &shost->shost_gendev;
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pqi_sas_node = pqi_alloc_sas_node(parent_dev);
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if (!pqi_sas_node)
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return -ENOMEM;
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pqi_sas_port = pqi_alloc_sas_port(pqi_sas_node, ctrl_info->sas_address);
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if (!pqi_sas_port) {
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rc = -ENODEV;
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goto free_sas_node;
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}
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pqi_sas_phy = pqi_alloc_sas_phy(pqi_sas_port);
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if (!pqi_sas_phy) {
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rc = -ENODEV;
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goto free_sas_port;
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}
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rc = pqi_sas_port_add_phy(pqi_sas_phy);
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if (rc)
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goto free_sas_phy;
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ctrl_info->sas_host = pqi_sas_node;
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return 0;
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free_sas_phy:
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pqi_free_sas_phy(pqi_sas_phy);
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free_sas_port:
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pqi_free_sas_port(pqi_sas_port);
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free_sas_node:
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pqi_free_sas_node(pqi_sas_node);
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|
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return rc;
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}
|
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|
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void pqi_delete_sas_host(struct pqi_ctrl_info *ctrl_info)
|
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{
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pqi_free_sas_node(ctrl_info->sas_host);
|
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}
|
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|
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int pqi_add_sas_device(struct pqi_sas_node *pqi_sas_node,
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struct pqi_scsi_dev *device)
|
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{
|
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int rc;
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struct pqi_sas_port *pqi_sas_port;
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struct sas_rphy *rphy;
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|
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pqi_sas_port = pqi_alloc_sas_port(pqi_sas_node, device->sas_address);
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if (!pqi_sas_port)
|
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return -ENOMEM;
|
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|
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rphy = sas_end_device_alloc(pqi_sas_port->port);
|
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if (!rphy) {
|
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rc = -ENODEV;
|
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goto free_sas_port;
|
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}
|
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|
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pqi_sas_port->rphy = rphy;
|
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device->sas_port = pqi_sas_port;
|
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|
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rc = pqi_sas_port_add_rphy(pqi_sas_port, rphy);
|
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if (rc)
|
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goto free_sas_port;
|
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|
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return 0;
|
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|
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free_sas_port:
|
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pqi_free_sas_port(pqi_sas_port);
|
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device->sas_port = NULL;
|
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|
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return rc;
|
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}
|
||||
|
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void pqi_remove_sas_device(struct pqi_scsi_dev *device)
|
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{
|
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if (device->sas_port) {
|
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pqi_free_sas_port(device->sas_port);
|
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device->sas_port = NULL;
|
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}
|
||||
}
|
||||
|
||||
static int pqi_sas_get_linkerrors(struct sas_phy *phy)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int pqi_sas_get_enclosure_identifier(struct sas_rphy *rphy,
|
||||
u64 *identifier)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int pqi_sas_get_bay_identifier(struct sas_rphy *rphy)
|
||||
{
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
static int pqi_sas_phy_reset(struct sas_phy *phy, int hard_reset)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int pqi_sas_phy_enable(struct sas_phy *phy, int enable)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int pqi_sas_phy_setup(struct sas_phy *phy)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void pqi_sas_phy_release(struct sas_phy *phy)
|
||||
{
|
||||
}
|
||||
|
||||
static int pqi_sas_phy_speed(struct sas_phy *phy,
|
||||
struct sas_phy_linkrates *rates)
|
||||
{
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* SMP = Serial Management Protocol */
|
||||
|
||||
static int pqi_sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
|
||||
struct request *req)
|
||||
{
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
struct sas_function_template pqi_sas_transport_functions = {
|
||||
.get_linkerrors = pqi_sas_get_linkerrors,
|
||||
.get_enclosure_identifier = pqi_sas_get_enclosure_identifier,
|
||||
.get_bay_identifier = pqi_sas_get_bay_identifier,
|
||||
.phy_reset = pqi_sas_phy_reset,
|
||||
.phy_enable = pqi_sas_phy_enable,
|
||||
.phy_setup = pqi_sas_phy_setup,
|
||||
.phy_release = pqi_sas_phy_release,
|
||||
.set_phy_speed = pqi_sas_phy_speed,
|
||||
.smp_handler = pqi_sas_smp_handler,
|
||||
};
|
394
drivers/scsi/smartpqi/smartpqi_sis.c
Normal file
394
drivers/scsi/smartpqi/smartpqi_sis.c
Normal file
|
@ -0,0 +1,394 @@
|
|||
/*
|
||||
* driver for Microsemi PQI-based storage controllers
|
||||
* Copyright (c) 2016 Microsemi Corporation
|
||||
* Copyright (c) 2016 PMC-Sierra, Inc.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
|
||||
* NON INFRINGEMENT. See the GNU General Public License for more details.
|
||||
*
|
||||
* Questions/Comments/Bugfixes to esc.storagedev@microsemi.com
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/pci.h>
|
||||
#include <scsi/scsi_device.h>
|
||||
#include <asm/unaligned.h>
|
||||
#include "smartpqi.h"
|
||||
#include "smartpqi_sis.h"
|
||||
|
||||
/* legacy SIS interface commands */
|
||||
#define SIS_CMD_GET_ADAPTER_PROPERTIES 0x19
|
||||
#define SIS_CMD_INIT_BASE_STRUCT_ADDRESS 0x1b
|
||||
#define SIS_CMD_GET_PQI_CAPABILITIES 0x3000
|
||||
|
||||
/* for submission of legacy SIS commands */
|
||||
#define SIS_REENABLE_SIS_MODE 0x1
|
||||
#define SIS_ENABLE_MSIX 0x40
|
||||
#define SIS_SOFT_RESET 0x100
|
||||
#define SIS_CMD_READY 0x200
|
||||
#define SIS_CMD_COMPLETE 0x1000
|
||||
#define SIS_CLEAR_CTRL_TO_HOST_DOORBELL 0x1000
|
||||
#define SIS_CMD_STATUS_SUCCESS 0x1
|
||||
#define SIS_CMD_COMPLETE_TIMEOUT_SECS 30
|
||||
#define SIS_CMD_COMPLETE_POLL_INTERVAL_MSECS 10
|
||||
|
||||
/* used with SIS_CMD_GET_ADAPTER_PROPERTIES command */
|
||||
#define SIS_EXTENDED_PROPERTIES_SUPPORTED 0x800000
|
||||
#define SIS_SMARTARRAY_FEATURES_SUPPORTED 0x2
|
||||
#define SIS_PQI_MODE_SUPPORTED 0x4
|
||||
#define SIS_REQUIRED_EXTENDED_PROPERTIES \
|
||||
(SIS_SMARTARRAY_FEATURES_SUPPORTED | SIS_PQI_MODE_SUPPORTED)
|
||||
|
||||
/* used with SIS_CMD_INIT_BASE_STRUCT_ADDRESS command */
|
||||
#define SIS_BASE_STRUCT_REVISION 9
|
||||
#define SIS_BASE_STRUCT_ALIGNMENT 16
|
||||
|
||||
#define SIS_CTRL_KERNEL_UP 0x80
|
||||
#define SIS_CTRL_KERNEL_PANIC 0x100
|
||||
#define SIS_CTRL_READY_TIMEOUT_SECS 30
|
||||
#define SIS_CTRL_READY_POLL_INTERVAL_MSECS 10
|
||||
|
||||
#pragma pack(1)
|
||||
|
||||
/* for use with SIS_CMD_INIT_BASE_STRUCT_ADDRESS command */
|
||||
struct sis_base_struct {
|
||||
__le32 revision; /* revision of this structure */
|
||||
__le32 flags; /* reserved */
|
||||
__le32 error_buffer_paddr_low; /* lower 32 bits of physical memory */
|
||||
/* buffer for PQI error response */
|
||||
/* data */
|
||||
__le32 error_buffer_paddr_high; /* upper 32 bits of physical */
|
||||
/* memory buffer for PQI */
|
||||
/* error response data */
|
||||
__le32 error_buffer_element_length; /* length of each PQI error */
|
||||
/* response buffer element */
|
||||
/* in bytes */
|
||||
__le32 error_buffer_num_elements; /* total number of PQI error */
|
||||
/* response buffers available */
|
||||
};
|
||||
|
||||
#pragma pack()
|
||||
|
||||
int sis_wait_for_ctrl_ready(struct pqi_ctrl_info *ctrl_info)
|
||||
{
|
||||
unsigned long timeout;
|
||||
u32 status;
|
||||
|
||||
timeout = (SIS_CTRL_READY_TIMEOUT_SECS * HZ) + jiffies;
|
||||
|
||||
while (1) {
|
||||
status = readl(&ctrl_info->registers->sis_firmware_status);
|
||||
if (status != ~0) {
|
||||
if (status & SIS_CTRL_KERNEL_PANIC) {
|
||||
dev_err(&ctrl_info->pci_dev->dev,
|
||||
"controller is offline: status code 0x%x\n",
|
||||
readl(
|
||||
&ctrl_info->registers->sis_mailbox[7]));
|
||||
return -ENODEV;
|
||||
}
|
||||
if (status & SIS_CTRL_KERNEL_UP)
|
||||
break;
|
||||
}
|
||||
if (time_after(jiffies, timeout))
|
||||
return -ETIMEDOUT;
|
||||
msleep(SIS_CTRL_READY_POLL_INTERVAL_MSECS);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
bool sis_is_firmware_running(struct pqi_ctrl_info *ctrl_info)
|
||||
{
|
||||
bool running;
|
||||
u32 status;
|
||||
|
||||
status = readl(&ctrl_info->registers->sis_firmware_status);
|
||||
|
||||
if (status & SIS_CTRL_KERNEL_PANIC)
|
||||
running = false;
|
||||
else
|
||||
running = true;
|
||||
|
||||
if (!running)
|
||||
dev_err(&ctrl_info->pci_dev->dev,
|
||||
"controller is offline: status code 0x%x\n",
|
||||
readl(&ctrl_info->registers->sis_mailbox[7]));
|
||||
|
||||
return running;
|
||||
}
|
||||
|
||||
/* used for passing command parameters/results when issuing SIS commands */
|
||||
struct sis_sync_cmd_params {
|
||||
u32 mailbox[6]; /* mailboxes 0-5 */
|
||||
};
|
||||
|
||||
static int sis_send_sync_cmd(struct pqi_ctrl_info *ctrl_info,
|
||||
u32 cmd, struct sis_sync_cmd_params *params)
|
||||
{
|
||||
struct pqi_ctrl_registers __iomem *registers;
|
||||
unsigned int i;
|
||||
unsigned long timeout;
|
||||
u32 doorbell;
|
||||
u32 cmd_status;
|
||||
|
||||
registers = ctrl_info->registers;
|
||||
|
||||
/* Write the command to mailbox 0. */
|
||||
writel(cmd, ®isters->sis_mailbox[0]);
|
||||
|
||||
/*
|
||||
* Write the command parameters to mailboxes 1-4 (mailbox 5 is not used
|
||||
* when sending a command to the controller).
|
||||
*/
|
||||
for (i = 1; i <= 4; i++)
|
||||
writel(params->mailbox[i], ®isters->sis_mailbox[i]);
|
||||
|
||||
/* Clear the command doorbell. */
|
||||
writel(SIS_CLEAR_CTRL_TO_HOST_DOORBELL,
|
||||
®isters->sis_ctrl_to_host_doorbell_clear);
|
||||
|
||||
/* Disable doorbell interrupts by masking all interrupts. */
|
||||
writel(~0, ®isters->sis_interrupt_mask);
|
||||
|
||||
/*
|
||||
* Force the completion of the interrupt mask register write before
|
||||
* submitting the command.
|
||||
*/
|
||||
readl(®isters->sis_interrupt_mask);
|
||||
|
||||
/* Submit the command to the controller. */
|
||||
writel(SIS_CMD_READY, ®isters->sis_host_to_ctrl_doorbell);
|
||||
|
||||
/*
|
||||
* Poll for command completion. Note that the call to msleep() is at
|
||||
* the top of the loop in order to give the controller time to start
|
||||
* processing the command before we start polling.
|
||||
*/
|
||||
timeout = (SIS_CMD_COMPLETE_TIMEOUT_SECS * HZ) + jiffies;
|
||||
while (1) {
|
||||
msleep(SIS_CMD_COMPLETE_POLL_INTERVAL_MSECS);
|
||||
doorbell = readl(®isters->sis_ctrl_to_host_doorbell);
|
||||
if (doorbell & SIS_CMD_COMPLETE)
|
||||
break;
|
||||
if (time_after(jiffies, timeout))
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
|
||||
/* Read the command status from mailbox 0. */
|
||||
cmd_status = readl(®isters->sis_mailbox[0]);
|
||||
if (cmd_status != SIS_CMD_STATUS_SUCCESS) {
|
||||
dev_err(&ctrl_info->pci_dev->dev,
|
||||
"SIS command failed for command 0x%x: status = 0x%x\n",
|
||||
cmd, cmd_status);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/*
|
||||
* The command completed successfully, so save the command status and
|
||||
* read the values returned in mailboxes 1-5.
|
||||
*/
|
||||
params->mailbox[0] = cmd_status;
|
||||
for (i = 1; i < ARRAY_SIZE(params->mailbox); i++)
|
||||
params->mailbox[i] = readl(®isters->sis_mailbox[i]);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* This function verifies that we are talking to a controller that speaks PQI.
|
||||
*/
|
||||
|
||||
int sis_get_ctrl_properties(struct pqi_ctrl_info *ctrl_info)
|
||||
{
|
||||
int rc;
|
||||
u32 properties;
|
||||
u32 extended_properties;
|
||||
struct sis_sync_cmd_params params;
|
||||
|
||||
memset(¶ms, 0, sizeof(params));
|
||||
|
||||
rc = sis_send_sync_cmd(ctrl_info, SIS_CMD_GET_ADAPTER_PROPERTIES,
|
||||
¶ms);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
properties = params.mailbox[1];
|
||||
|
||||
if (!(properties & SIS_EXTENDED_PROPERTIES_SUPPORTED))
|
||||
return -ENODEV;
|
||||
|
||||
extended_properties = params.mailbox[4];
|
||||
|
||||
if ((extended_properties & SIS_REQUIRED_EXTENDED_PROPERTIES) !=
|
||||
SIS_REQUIRED_EXTENDED_PROPERTIES)
|
||||
return -ENODEV;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int sis_get_pqi_capabilities(struct pqi_ctrl_info *ctrl_info)
|
||||
{
|
||||
int rc;
|
||||
struct sis_sync_cmd_params params;
|
||||
|
||||
memset(¶ms, 0, sizeof(params));
|
||||
|
||||
rc = sis_send_sync_cmd(ctrl_info, SIS_CMD_GET_PQI_CAPABILITIES,
|
||||
¶ms);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
ctrl_info->max_sg_entries = params.mailbox[1];
|
||||
ctrl_info->max_transfer_size = params.mailbox[2];
|
||||
ctrl_info->max_outstanding_requests = params.mailbox[3];
|
||||
ctrl_info->config_table_offset = params.mailbox[4];
|
||||
ctrl_info->config_table_length = params.mailbox[5];
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int sis_init_base_struct_addr(struct pqi_ctrl_info *ctrl_info)
|
||||
{
|
||||
int rc;
|
||||
void *base_struct_unaligned;
|
||||
struct sis_base_struct *base_struct;
|
||||
struct sis_sync_cmd_params params;
|
||||
unsigned long error_buffer_paddr;
|
||||
dma_addr_t bus_address;
|
||||
|
||||
base_struct_unaligned = kzalloc(sizeof(*base_struct)
|
||||
+ SIS_BASE_STRUCT_ALIGNMENT - 1, GFP_KERNEL);
|
||||
if (!base_struct_unaligned)
|
||||
return -ENOMEM;
|
||||
|
||||
base_struct = PTR_ALIGN(base_struct_unaligned,
|
||||
SIS_BASE_STRUCT_ALIGNMENT);
|
||||
error_buffer_paddr = (unsigned long)ctrl_info->error_buffer_dma_handle;
|
||||
|
||||
put_unaligned_le32(SIS_BASE_STRUCT_REVISION, &base_struct->revision);
|
||||
put_unaligned_le32(lower_32_bits(error_buffer_paddr),
|
||||
&base_struct->error_buffer_paddr_low);
|
||||
put_unaligned_le32(upper_32_bits(error_buffer_paddr),
|
||||
&base_struct->error_buffer_paddr_high);
|
||||
put_unaligned_le32(PQI_ERROR_BUFFER_ELEMENT_LENGTH,
|
||||
&base_struct->error_buffer_element_length);
|
||||
put_unaligned_le32(ctrl_info->max_io_slots,
|
||||
&base_struct->error_buffer_num_elements);
|
||||
|
||||
bus_address = pci_map_single(ctrl_info->pci_dev, base_struct,
|
||||
sizeof(*base_struct), PCI_DMA_TODEVICE);
|
||||
if (pci_dma_mapping_error(ctrl_info->pci_dev, bus_address)) {
|
||||
rc = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
|
||||
memset(¶ms, 0, sizeof(params));
|
||||
params.mailbox[1] = lower_32_bits((u64)bus_address);
|
||||
params.mailbox[2] = upper_32_bits((u64)bus_address);
|
||||
params.mailbox[3] = sizeof(*base_struct);
|
||||
|
||||
rc = sis_send_sync_cmd(ctrl_info, SIS_CMD_INIT_BASE_STRUCT_ADDRESS,
|
||||
¶ms);
|
||||
|
||||
pci_unmap_single(ctrl_info->pci_dev, bus_address, sizeof(*base_struct),
|
||||
PCI_DMA_TODEVICE);
|
||||
|
||||
out:
|
||||
kfree(base_struct_unaligned);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
/* Enable MSI-X interrupts on the controller. */
|
||||
|
||||
void sis_enable_msix(struct pqi_ctrl_info *ctrl_info)
|
||||
{
|
||||
u32 doorbell_register;
|
||||
|
||||
doorbell_register =
|
||||
readl(&ctrl_info->registers->sis_host_to_ctrl_doorbell);
|
||||
doorbell_register |= SIS_ENABLE_MSIX;
|
||||
|
||||
writel(doorbell_register,
|
||||
&ctrl_info->registers->sis_host_to_ctrl_doorbell);
|
||||
}
|
||||
|
||||
/* Disable MSI-X interrupts on the controller. */
|
||||
|
||||
void sis_disable_msix(struct pqi_ctrl_info *ctrl_info)
|
||||
{
|
||||
u32 doorbell_register;
|
||||
|
||||
doorbell_register =
|
||||
readl(&ctrl_info->registers->sis_host_to_ctrl_doorbell);
|
||||
doorbell_register &= ~SIS_ENABLE_MSIX;
|
||||
|
||||
writel(doorbell_register,
|
||||
&ctrl_info->registers->sis_host_to_ctrl_doorbell);
|
||||
}
|
||||
|
||||
void sis_soft_reset(struct pqi_ctrl_info *ctrl_info)
|
||||
{
|
||||
writel(SIS_SOFT_RESET,
|
||||
&ctrl_info->registers->sis_host_to_ctrl_doorbell);
|
||||
}
|
||||
|
||||
#define SIS_MODE_READY_TIMEOUT_SECS 30
|
||||
|
||||
int sis_reenable_sis_mode(struct pqi_ctrl_info *ctrl_info)
|
||||
{
|
||||
int rc;
|
||||
unsigned long timeout;
|
||||
struct pqi_ctrl_registers __iomem *registers;
|
||||
u32 doorbell;
|
||||
|
||||
registers = ctrl_info->registers;
|
||||
|
||||
writel(SIS_REENABLE_SIS_MODE,
|
||||
®isters->sis_host_to_ctrl_doorbell);
|
||||
|
||||
rc = 0;
|
||||
timeout = (SIS_MODE_READY_TIMEOUT_SECS * HZ) + jiffies;
|
||||
|
||||
while (1) {
|
||||
doorbell = readl(®isters->sis_ctrl_to_host_doorbell);
|
||||
if ((doorbell & SIS_REENABLE_SIS_MODE) == 0)
|
||||
break;
|
||||
if (time_after(jiffies, timeout)) {
|
||||
rc = -ETIMEDOUT;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (rc)
|
||||
dev_err(&ctrl_info->pci_dev->dev,
|
||||
"re-enabling SIS mode failed\n");
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static void __attribute__((unused)) verify_structures(void)
|
||||
{
|
||||
BUILD_BUG_ON(offsetof(struct sis_base_struct,
|
||||
revision) != 0x0);
|
||||
BUILD_BUG_ON(offsetof(struct sis_base_struct,
|
||||
flags) != 0x4);
|
||||
BUILD_BUG_ON(offsetof(struct sis_base_struct,
|
||||
error_buffer_paddr_low) != 0x8);
|
||||
BUILD_BUG_ON(offsetof(struct sis_base_struct,
|
||||
error_buffer_paddr_high) != 0xc);
|
||||
BUILD_BUG_ON(offsetof(struct sis_base_struct,
|
||||
error_buffer_element_length) != 0x10);
|
||||
BUILD_BUG_ON(offsetof(struct sis_base_struct,
|
||||
error_buffer_num_elements) != 0x14);
|
||||
BUILD_BUG_ON(sizeof(struct sis_base_struct) != 0x18);
|
||||
}
|
32
drivers/scsi/smartpqi/smartpqi_sis.h
Normal file
32
drivers/scsi/smartpqi/smartpqi_sis.h
Normal file
|
@ -0,0 +1,32 @@
|
|||
/*
|
||||
* driver for Microsemi PQI-based storage controllers
|
||||
* Copyright (c) 2016 Microsemi Corporation
|
||||
* Copyright (c) 2016 PMC-Sierra, Inc.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
|
||||
* NON INFRINGEMENT. See the GNU General Public License for more details.
|
||||
*
|
||||
* Questions/Comments/Bugfixes to esc.storagedev@microsemi.com
|
||||
*
|
||||
*/
|
||||
|
||||
#if !defined(_SMARTPQI_SIS_H)
|
||||
#define _SMARTPQI_SIS_H
|
||||
|
||||
int sis_wait_for_ctrl_ready(struct pqi_ctrl_info *ctrl_info);
|
||||
bool sis_is_firmware_running(struct pqi_ctrl_info *ctrl_info);
|
||||
int sis_get_ctrl_properties(struct pqi_ctrl_info *ctrl_info);
|
||||
int sis_get_pqi_capabilities(struct pqi_ctrl_info *ctrl_info);
|
||||
int sis_init_base_struct_addr(struct pqi_ctrl_info *ctrl_info);
|
||||
void sis_enable_msix(struct pqi_ctrl_info *ctrl_info);
|
||||
void sis_disable_msix(struct pqi_ctrl_info *ctrl_info);
|
||||
void sis_soft_reset(struct pqi_ctrl_info *ctrl_info);
|
||||
int sis_reenable_sis_mode(struct pqi_ctrl_info *ctrl_info);
|
||||
|
||||
#endif /* _SMARTPQI_SIS_H */
|
Loading…
Reference in New Issue
Block a user