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Diffstat (limited to 'drivers/scsi/isci/phy.c')
| -rw-r--r-- | drivers/scsi/isci/phy.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c new file mode 100644 index 000000000000..fbda570d25e1 --- /dev/null +++ b/drivers/scsi/isci/phy.c @@ -0,0 +1,179 @@ +/* + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * 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. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * The full GNU General Public License is included in this distribution + * in the file called LICENSE.GPL. + * + * BSD LICENSE + * + * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "isci.h" +#include "phy.h" +#include "scic_port.h" +#include "scic_config_parameters.h" + + +/** + * isci_phy_init() - This function is called by the probe function to + * initialize the phy objects. This func assumes that the isci_port objects + * associated with the SCU have been initialized. + * @isci_phy: This parameter specifies the isci_phy object to initialize + * @isci_host: This parameter specifies the parent SCU host object for this + * isci_phy + * @index: This parameter specifies which SCU phy associates with this + * isci_phy. Generally, SCU phy 0 relates isci_phy 0, etc. + * + */ +void isci_phy_init( + struct isci_phy *phy, + struct isci_host *isci_host, + int index) +{ + struct scic_sds_controller *controller = isci_host->core_controller; + struct scic_sds_phy *scic_phy; + union scic_oem_parameters oem_parameters; + enum sci_status status = SCI_SUCCESS; + + /*--------------- SCU_Phy Initialization Stuff -----------------------*/ + + status = scic_controller_get_phy_handle(controller, index, &scic_phy); + if (status == SCI_SUCCESS) { + sci_object_set_association(scic_phy, (void *)phy); + phy->sci_phy_handle = scic_phy; + } else + dev_err(&isci_host->pdev->dev, + "failed scic_controller_get_phy_handle\n"); + + scic_oem_parameters_get(controller, &oem_parameters); + + phy->sas_addr[0] = oem_parameters.sds1.phys[index].sas_address.low + & 0xFF; + phy->sas_addr[1] = (oem_parameters.sds1.phys[index].sas_address.low + >> 8) & 0xFF; + phy->sas_addr[2] = (oem_parameters.sds1.phys[index].sas_address.low + >> 16) & 0xFF; + phy->sas_addr[3] = (oem_parameters.sds1.phys[index].sas_address.low + >> 24) & 0xFF; + phy->sas_addr[4] = oem_parameters.sds1.phys[index].sas_address.high + & 0xFF; + phy->sas_addr[5] = (oem_parameters.sds1.phys[index].sas_address.high + >> 8) & 0xFF; + phy->sas_addr[6] = (oem_parameters.sds1.phys[index].sas_address.high + >> 16) & 0xFF; + phy->sas_addr[7] = (oem_parameters.sds1.phys[index].sas_address.high + >> 24) & 0xFF; + + phy->isci_port = NULL; + phy->sas_phy.enabled = 0; + phy->sas_phy.id = index; + phy->sas_phy.sas_addr = &phy->sas_addr[0]; + phy->sas_phy.frame_rcvd = (u8 *)&phy->frame_rcvd; + phy->sas_phy.ha = &isci_host->sas_ha; + phy->sas_phy.lldd_phy = phy; + phy->sas_phy.enabled = 1; + phy->sas_phy.class = SAS; + phy->sas_phy.iproto = SAS_PROTOCOL_ALL; + phy->sas_phy.tproto = 0; + phy->sas_phy.type = PHY_TYPE_PHYSICAL; + phy->sas_phy.role = PHY_ROLE_INITIATOR; + phy->sas_phy.oob_mode = OOB_NOT_CONNECTED; + phy->sas_phy.linkrate = SAS_LINK_RATE_UNKNOWN; + memset((u8 *)&phy->frame_rcvd, 0, sizeof(phy->frame_rcvd)); +} + + +/** + * isci_phy_control() - This function is one of the SAS Domain Template + * functions. This is a phy management function. + * @phy: This parameter specifies the sphy being controlled. + * @func: This parameter specifies the phy control function being invoked. + * @buf: This parameter is specific to the phy function being invoked. + * + * status, zero indicates success. + */ +int isci_phy_control( + struct asd_sas_phy *phy, + enum phy_func func, + void *buf) +{ + int ret = TMF_RESP_FUNC_COMPLETE; + struct isci_phy *isci_phy_ptr = (struct isci_phy *)phy->lldd_phy; + struct isci_port *isci_port_ptr = NULL; + + if (isci_phy_ptr != NULL) + isci_port_ptr = isci_phy_ptr->isci_port; + + if ((isci_phy_ptr == NULL) || (isci_port_ptr == NULL)) { + pr_err("%s: asd_sas_phy %p: lldd_phy %p or " + "isci_port %p == NULL!\n", + __func__, phy, isci_phy_ptr, isci_port_ptr); + return TMF_RESP_FUNC_FAILED; + } + + pr_debug("%s: phy %p; func %d; buf %p; isci phy %p, port %p\n", + __func__, phy, func, buf, isci_phy_ptr, isci_port_ptr); + + switch (func) { + case PHY_FUNC_HARD_RESET: + case PHY_FUNC_LINK_RESET: + + /* Perform the port reset. */ + ret = isci_port_perform_hard_reset(isci_port_ptr, isci_phy_ptr); + + break; + + case PHY_FUNC_DISABLE: + default: + pr_debug("%s: phy %p; func %d NOT IMPLEMENTED!\n", + __func__, phy, func); + ret = TMF_RESP_FUNC_FAILED; + break; + } + return ret; +} |